Merge "fastbootd: Only flash slots listed by the boot control HAL."
diff --git a/adb/Android.bp b/adb/Android.bp
index e994075..6234af1 100644
--- a/adb/Android.bp
+++ b/adb/Android.bp
@@ -24,8 +24,7 @@
"-Wno-missing-field-initializers",
"-Wvla",
],
- rtti: true,
- cpp_std: "gnu++17",
+ cpp_std: "experimental",
use_version_lib: true,
@@ -72,7 +71,7 @@
"-DUNICODE=1",
"-D_UNICODE=1",
- // -std=gnu++11 doesn't set _GNU_SOURCE on Windows.
+ // Unlike on Linux, -std=gnu++ doesn't set _GNU_SOURCE on Windows.
"-D_GNU_SOURCE",
// MinGW hides some things behind _POSIX_SOURCE.
diff --git a/adb/NOTICE b/adb/NOTICE
index ff47c95..9ffcc08 100644
--- a/adb/NOTICE
+++ b/adb/NOTICE
@@ -189,63 +189,3 @@
END OF TERMS AND CONDITIONS
-------------------------------------------------------------
-libwinpthread license:
-------------------------------------------------------------
-Copyright (c) 2011 mingw-w64 project
-
-Permission is hereby granted, free of charge, to any person obtaining a
-copy of this software and associated documentation files (the "Software"),
-to deal in the Software without restriction, including without limitation
-the rights to use, copy, modify, merge, publish, distribute, sublicense,
-and/or sell copies of the Software, and to permit persons to whom the
-Software is furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
-FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
-DEALINGS IN THE SOFTWARE.
-
-
-/*
- * Parts of this library are derived by:
- *
- * Posix Threads library for Microsoft Windows
- *
- * Use at own risk, there is no implied warranty to this code.
- * It uses undocumented features of Microsoft Windows that can change
- * at any time in the future.
- *
- * (C) 2010 Lockless Inc.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without modification,
- * are permitted provided that the following conditions are met:
- *
- *
- * * Redistributions of source code must retain the above copyright notice,
- * this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright notice,
- * this list of conditions and the following disclaimer in the documentation
- * and/or other materials provided with the distribution.
- * * Neither the name of Lockless Inc. nor the names of its contributors may be
- * used to endorse or promote products derived from this software without
- * specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AN
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
- * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
- * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
- * OF THE POSSIBILITY OF SUCH DAMAGE.
- */
diff --git a/adb/adb.h b/adb/adb.h
index e2911e8..cdd6346 100644
--- a/adb/adb.h
+++ b/adb/adb.h
@@ -149,6 +149,10 @@
#endif
#if !ADB_HOST
+asocket* daemon_service_to_socket(std::string_view name);
+#endif
+
+#if !ADB_HOST
int init_jdwp(void);
asocket* create_jdwp_service_socket();
asocket* create_jdwp_tracker_service_socket();
diff --git a/adb/client/adb_install.cpp b/adb/client/adb_install.cpp
index 7f37c45..054cbac 100644
--- a/adb/client/adb_install.cpp
+++ b/adb/client/adb_install.cpp
@@ -226,18 +226,8 @@
static int install_app_legacy(int argc, const char** argv, bool use_fastdeploy,
bool use_localagent) {
- static const char* const DATA_DEST = "/data/local/tmp/%s";
- static const char* const SD_DEST = "/sdcard/tmp/%s";
- const char* where = DATA_DEST;
-
printf("Performing Push Install\n");
- for (int i = 1; i < argc; i++) {
- if (!strcmp(argv[i], "-s")) {
- where = SD_DEST;
- }
- }
-
// Find last APK argument.
// All other arguments passed through verbatim.
int last_apk = -1;
@@ -256,7 +246,7 @@
int result = -1;
std::vector<const char*> apk_file = {argv[last_apk]};
std::string apk_dest =
- android::base::StringPrintf(where, android::base::Basename(argv[last_apk]).c_str());
+ "/data/local/tmp/" + android::base::Basename(argv[last_apk]);
if (use_fastdeploy == true) {
TemporaryFile metadataTmpFile;
@@ -341,11 +331,6 @@
error_exit("Attempting to use streaming install on unsupported device");
}
- if (use_fastdeploy == true && is_reinstall == false) {
- printf("Fast Deploy is only available with -r.\n");
- use_fastdeploy = false;
- }
-
if (use_fastdeploy == true && get_device_api_level() < kFastDeployMinApi) {
printf("Fast Deploy is only compatible with devices of API version %d or higher, "
"ignoring.\n",
@@ -360,10 +345,17 @@
passthrough_argv.push_back(argv[i]);
}
}
+ if (passthrough_argv.size() < 2) {
+ error_exit("install requires an apk argument");
+ }
if (use_fastdeploy == true) {
fastdeploy_set_local_agent(use_localagent);
update_agent(agent_update_strategy);
+
+ // The last argument must be the APK file
+ const char* file = passthrough_argv.back();
+ use_fastdeploy = find_package(file);
}
switch (installMode) {
diff --git a/adb/client/commandline.cpp b/adb/client/commandline.cpp
index c11052d..8676214 100644
--- a/adb/client/commandline.cpp
+++ b/adb/client/commandline.cpp
@@ -146,18 +146,16 @@
" install [-lrtsdg] [--instant] PACKAGE\n"
" install-multiple [-lrtsdpg] [--instant] PACKAGE...\n"
" push package(s) to the device and install them\n"
- " -l: forward lock application\n"
" -r: replace existing application\n"
" -t: allow test packages\n"
- " -s: install application on sdcard\n"
" -d: allow version code downgrade (debuggable packages only)\n"
" -p: partial application install (install-multiple only)\n"
" -g: grant all runtime permissions\n"
" --instant: cause the app to be installed as an ephemeral install app\n"
" --no-streaming: always push APK to device and invoke Package Manager as separate steps\n"
" --streaming: force streaming APK directly into Package Manager\n"
- " --fastdeploy: use fast deploy (only valid with -r)\n"
- " --no-fastdeploy: prevent use of fast deploy (only valid with -r)\n"
+ " --fastdeploy: use fast deploy\n"
+ " --no-fastdeploy: prevent use of fast deploy\n"
" --force-agent: force update of deployment agent when using fast deploy\n"
" --date-check-agent: update deployment agent when local version is newer and using fast deploy\n"
" --version-check-agent: update deployment agent when local version has different version code and using fast deploy\n"
@@ -1277,6 +1275,42 @@
return 0;
}
+static int adb_connect_command_bidirectional(const std::string& command) {
+ std::string error;
+ int fd = adb_connect(command, &error);
+ if (fd < 0) {
+ fprintf(stderr, "error: %s\n", error.c_str());
+ return 1;
+ }
+
+ static constexpr auto forward = [](int src, int sink, bool exit_on_end) {
+ char buf[4096];
+ while (true) {
+ int rc = adb_read(src, buf, sizeof(buf));
+ if (rc == 0) {
+ if (exit_on_end) {
+ exit(0);
+ } else {
+ adb_shutdown(sink, SHUT_WR);
+ }
+ return;
+ } else if (rc < 0) {
+ perror_exit("read failed");
+ }
+ if (!WriteFdExactly(sink, buf, rc)) {
+ perror_exit("write failed");
+ }
+ }
+ };
+
+ std::thread read(forward, fd, STDOUT_FILENO, true);
+ std::thread write(forward, STDIN_FILENO, fd, false);
+ read.join();
+ write.join();
+ adb_close(fd);
+ return 0;
+}
+
static int adb_query_command(const std::string& command) {
std::string result;
std::string error;
@@ -1768,7 +1802,7 @@
if (argc != 2) {
error_exit("usage: adb raw SERVICE");
}
- return adb_connect_command(argv[1]);
+ return adb_connect_command_bidirectional(argv[1]);
}
/* "adb /?" is a common idiom under Windows */
diff --git a/adb/client/fastdeploy.cpp b/adb/client/fastdeploy.cpp
index 45f3cca..f4e8664 100644
--- a/adb/client/fastdeploy.cpp
+++ b/adb/client/fastdeploy.cpp
@@ -16,6 +16,7 @@
#include "fastdeploy.h"
+#include <string.h>
#include <algorithm>
#include <array>
#include <memory>
@@ -31,7 +32,7 @@
#include "adb_utils.h"
-static constexpr long kRequiredAgentVersion = 0x00000001;
+static constexpr long kRequiredAgentVersion = 0x00000002;
static constexpr const char* kDeviceAgentPath = "/data/local/tmp/";
@@ -228,11 +229,12 @@
android::base::StringPrintf(kAgentExtractCommandPattern, packageName.c_str());
std::vector<char> extractErrorBuffer;
- int statusCode;
- DeployAgentFileCallback cb(outputFp, &extractErrorBuffer, &statusCode);
+ DeployAgentFileCallback cb(outputFp, &extractErrorBuffer);
int returnCode = send_shell_command(extractCommand, false, &cb);
if (returnCode != 0) {
- error_exit("Executing %s returned %d", extractCommand.c_str(), returnCode);
+ fprintf(stderr, "Executing %s returned %d\n", extractCommand.c_str(), returnCode);
+ fprintf(stderr, "%*s\n", int(extractErrorBuffer.size()), extractErrorBuffer.data());
+ error_exit("Aborting");
}
}
@@ -312,9 +314,16 @@
std::vector<unsigned char> applyErrorBuffer;
std::string argsString;
+ bool rSwitchPresent = false;
for (int i = 0; i < argc; i++) {
argsString.append(argv[i]);
argsString.append(" ");
+ if (!strcmp(argv[i], "-r")) {
+ rSwitchPresent = true;
+ }
+ }
+ if (!rSwitchPresent) {
+ argsString.append("-r");
}
std::string applyPatchCommand =
@@ -325,3 +334,9 @@
error_exit("Executing %s returned %d", applyPatchCommand.c_str(), returnCode);
}
}
+
+bool find_package(const char* apkPath) {
+ const std::string findCommand =
+ "/data/local/tmp/deployagent find " + get_packagename_from_apk(apkPath);
+ return !send_shell_command(findCommand);
+}
diff --git a/adb/client/fastdeploy.h b/adb/client/fastdeploy.h
index a6b10d3..7b7f2ec 100644
--- a/adb/client/fastdeploy.h
+++ b/adb/client/fastdeploy.h
@@ -32,3 +32,4 @@
void apply_patch_on_device(const char* apkPath, const char* patchPath, const char* outputPath);
void install_patch(const char* apkPath, const char* patchPath, int argc, const char** argv);
std::string get_patch_path(const char* apkPath);
+bool find_package(const char* apkPath);
diff --git a/adb/client/fastdeploycallbacks.cpp b/adb/client/fastdeploycallbacks.cpp
index 6c9a21f..23a0aca 100644
--- a/adb/client/fastdeploycallbacks.cpp
+++ b/adb/client/fastdeploycallbacks.cpp
@@ -35,8 +35,7 @@
class DeployAgentBufferCallback : public StandardStreamsCallbackInterface {
public:
- DeployAgentBufferCallback(std::vector<char>* outBuffer, std::vector<char>* errBuffer,
- int* statusCode);
+ DeployAgentBufferCallback(std::vector<char>* outBuffer, std::vector<char>* errBuffer);
virtual void OnStdout(const char* buffer, int length);
virtual void OnStderr(const char* buffer, int length);
@@ -45,27 +44,17 @@
private:
std::vector<char>* mpOutBuffer;
std::vector<char>* mpErrBuffer;
- int* mpStatusCode;
};
int capture_shell_command(const char* command, std::vector<char>* outBuffer,
std::vector<char>* errBuffer) {
- int statusCode;
- DeployAgentBufferCallback cb(outBuffer, errBuffer, &statusCode);
- int ret = send_shell_command(command, false, &cb);
-
- if (ret == 0) {
- return statusCode;
- } else {
- return ret;
- }
+ DeployAgentBufferCallback cb(outBuffer, errBuffer);
+ return send_shell_command(command, false, &cb);
}
-DeployAgentFileCallback::DeployAgentFileCallback(FILE* outputFile, std::vector<char>* errBuffer,
- int* statusCode) {
+DeployAgentFileCallback::DeployAgentFileCallback(FILE* outputFile, std::vector<char>* errBuffer) {
mpOutFile = outputFile;
mpErrBuffer = errBuffer;
- mpStatusCode = statusCode;
mBytesWritten = 0;
}
@@ -84,10 +73,7 @@
}
int DeployAgentFileCallback::Done(int status) {
- if (mpStatusCode != NULL) {
- *mpStatusCode = status;
- }
- return 0;
+ return status;
}
int DeployAgentFileCallback::getBytesWritten() {
@@ -95,11 +81,9 @@
}
DeployAgentBufferCallback::DeployAgentBufferCallback(std::vector<char>* outBuffer,
- std::vector<char>* errBuffer,
- int* statusCode) {
+ std::vector<char>* errBuffer) {
mpOutBuffer = outBuffer;
mpErrBuffer = errBuffer;
- mpStatusCode = statusCode;
}
void DeployAgentBufferCallback::OnStdout(const char* buffer, int length) {
@@ -111,8 +95,5 @@
}
int DeployAgentBufferCallback::Done(int status) {
- if (mpStatusCode != NULL) {
- *mpStatusCode = status;
- }
- return 0;
+ return status;
}
diff --git a/adb/client/fastdeploycallbacks.h b/adb/client/fastdeploycallbacks.h
index b428b50..7e049c5 100644
--- a/adb/client/fastdeploycallbacks.h
+++ b/adb/client/fastdeploycallbacks.h
@@ -21,7 +21,7 @@
class DeployAgentFileCallback : public StandardStreamsCallbackInterface {
public:
- DeployAgentFileCallback(FILE* outputFile, std::vector<char>* errBuffer, int* statusCode);
+ DeployAgentFileCallback(FILE* outputFile, std::vector<char>* errBuffer);
virtual void OnStdout(const char* buffer, int length);
virtual void OnStderr(const char* buffer, int length);
@@ -33,7 +33,6 @@
FILE* mpOutFile;
std::vector<char>* mpErrBuffer;
int mBytesWritten;
- int* mpStatusCode;
};
int capture_shell_command(const char* command, std::vector<char>* outBuffer,
diff --git a/adb/daemon/remount_service.cpp b/adb/daemon/remount_service.cpp
index b72ed16..1a92317 100644
--- a/adb/daemon/remount_service.cpp
+++ b/adb/daemon/remount_service.cpp
@@ -245,9 +245,8 @@
// If we can use overlayfs, lets get it in place first
// before we struggle with determining deduplication operations.
if (!verity_enabled && fs_mgr_overlayfs_setup()) {
- std::unique_ptr<fstab, decltype(&fs_mgr_free_fstab)> fstab(fs_mgr_read_fstab_default(),
- fs_mgr_free_fstab);
- if (fs_mgr_overlayfs_mount_all(fstab.get())) {
+ Fstab fstab;
+ if (ReadDefaultFstab(&fstab) && fs_mgr_overlayfs_mount_all(&fstab)) {
WriteFdExactly(fd.get(), "overlayfs mounted\n");
}
}
diff --git a/adb/daemon/services.cpp b/adb/daemon/services.cpp
index b300fac..3182ddd 100644
--- a/adb/daemon/services.cpp
+++ b/adb/daemon/services.cpp
@@ -33,6 +33,7 @@
#include <thread>
#include <android-base/file.h>
+#include <android-base/parseint.h>
#include <android-base/parsenetaddress.h>
#include <android-base/properties.h>
#include <android-base/stringprintf.h>
@@ -223,6 +224,105 @@
WriteFdExactly(fd.get(), "spinning\n");
}
+struct ServiceSocket : public asocket {
+ ServiceSocket() {
+ install_local_socket(this);
+ this->enqueue = [](asocket* self, apacket::payload_type data) {
+ return static_cast<ServiceSocket*>(self)->Enqueue(std::move(data));
+ };
+ this->ready = [](asocket* self) { return static_cast<ServiceSocket*>(self)->Ready(); };
+ this->close = [](asocket* self) { return static_cast<ServiceSocket*>(self)->Close(); };
+ }
+ virtual ~ServiceSocket() = default;
+
+ virtual int Enqueue(apacket::payload_type data) { return -1; }
+ virtual void Ready() {}
+ virtual void Close() {
+ if (peer) {
+ peer->peer = nullptr;
+ if (peer->shutdown) {
+ peer->shutdown(peer);
+ }
+ peer->close(peer);
+ }
+
+ remove_socket(this);
+ delete this;
+ }
+};
+
+struct SinkSocket : public ServiceSocket {
+ explicit SinkSocket(size_t byte_count) {
+ LOG(INFO) << "Creating new SinkSocket with capacity " << byte_count;
+ bytes_left_ = byte_count;
+ }
+
+ virtual ~SinkSocket() { LOG(INFO) << "SinkSocket destroyed"; }
+
+ virtual int Enqueue(apacket::payload_type data) override final {
+ if (bytes_left_ <= data.size()) {
+ // Done reading.
+ Close();
+ return -1;
+ }
+
+ bytes_left_ -= data.size();
+ return 0;
+ }
+
+ size_t bytes_left_;
+};
+
+struct SourceSocket : public ServiceSocket {
+ explicit SourceSocket(size_t byte_count) {
+ LOG(INFO) << "Creating new SourceSocket with capacity " << byte_count;
+ bytes_left_ = byte_count;
+ }
+
+ virtual ~SourceSocket() { LOG(INFO) << "SourceSocket destroyed"; }
+
+ void Ready() {
+ size_t len = std::min(bytes_left_, get_max_payload());
+ if (len == 0) {
+ Close();
+ return;
+ }
+
+ Block block(len);
+ memset(block.data(), 0, block.size());
+ peer->enqueue(peer, std::move(block));
+ bytes_left_ -= len;
+ }
+
+ int Enqueue(apacket::payload_type data) { return -1; }
+
+ size_t bytes_left_;
+};
+
+asocket* daemon_service_to_socket(std::string_view name) {
+ if (name == "jdwp") {
+ return create_jdwp_service_socket();
+ } else if (name == "track-jdwp") {
+ return create_jdwp_tracker_service_socket();
+ } else if (name.starts_with("sink:")) {
+ name.remove_prefix(strlen("sink:"));
+ uint64_t byte_count = 0;
+ if (!android::base::ParseUint(name.data(), &byte_count)) {
+ return nullptr;
+ }
+ return new SinkSocket(byte_count);
+ } else if (name.starts_with("source:")) {
+ name.remove_prefix(strlen("source:"));
+ uint64_t byte_count = 0;
+ if (!android::base::ParseUint(name.data(), &byte_count)) {
+ return nullptr;
+ }
+ return new SourceSocket(byte_count);
+ }
+
+ return nullptr;
+}
+
unique_fd daemon_service_to_fd(const char* name, atransport* transport) {
if (!strncmp("dev:", name, 4)) {
return unique_fd{unix_open(name + 4, O_RDWR | O_CLOEXEC)};
diff --git a/adb/daemon/shell_service.cpp b/adb/daemon/shell_service.cpp
index 01097ac..8805fc1 100644
--- a/adb/daemon/shell_service.cpp
+++ b/adb/daemon/shell_service.cpp
@@ -273,7 +273,7 @@
}
std::vector<std::string> joined_env;
- for (auto it : env) {
+ for (const auto& it : env) {
const char* key = it.first.c_str();
const char* value = it.second.c_str();
joined_env.push_back(android::base::StringPrintf("%s=%s", key, value));
diff --git a/adb/fastdeploy/deployagent/src/com/android/fastdeploy/DeployAgent.java b/adb/fastdeploy/deployagent/src/com/android/fastdeploy/DeployAgent.java
index cd6f168..2d3b135 100644
--- a/adb/fastdeploy/deployagent/src/com/android/fastdeploy/DeployAgent.java
+++ b/adb/fastdeploy/deployagent/src/com/android/fastdeploy/DeployAgent.java
@@ -35,7 +35,7 @@
public final class DeployAgent {
private static final int BUFFER_SIZE = 128 * 1024;
- private static final int AGENT_VERSION = 0x00000001;
+ private static final int AGENT_VERSION = 0x00000002;
public static void main(String[] args) {
int exitCode = 0;
@@ -53,6 +53,15 @@
String packageName = args[1];
extractMetaData(packageName);
+ } else if (commandString.equals("find")) {
+ if (args.length != 2) {
+ showUsage(1);
+ }
+
+ String packageName = args[1];
+ if (getFilenameFromPackageName(packageName) == null) {
+ exitCode = 3;
+ }
} else if (commandString.equals("apply")) {
if (args.length < 4) {
showUsage(1);
@@ -112,6 +121,7 @@
"usage: deployagent <command> [<args>]\n\n" +
"commands:\n" +
"version get the version\n" +
+ "find PKGNAME return zero if package found, else non-zero\n" +
"extract PKGNAME extract an installed package's metadata\n" +
"apply PKGNAME PATCHFILE [-o|-pm] apply a patch from PATCHFILE (- for stdin) to an installed package\n" +
" -o <FILE> directs output to FILE, default or - for stdout\n" +
@@ -134,7 +144,7 @@
return null;
}
- private static File getFileFromPackageName(String packageName) throws IOException {
+ private static String getFilenameFromPackageName(String packageName) throws IOException {
StringBuilder commandBuilder = new StringBuilder();
commandBuilder.append("pm list packages -f " + packageName);
@@ -142,16 +152,32 @@
BufferedReader reader = new BufferedReader(new InputStreamReader(p.getInputStream()));
String packagePrefix = "package:";
+ String packageSuffix = "=" + packageName;
String line = "";
while ((line = reader.readLine()) != null) {
- int packageIndex = line.indexOf(packagePrefix);
- int equalsIndex = line.indexOf("=" + packageName);
- return new File(line.substring(packageIndex + packagePrefix.length(), equalsIndex));
+ if (line.endsWith(packageSuffix)) {
+ int packageIndex = line.indexOf(packagePrefix);
+ if (packageIndex == -1) {
+ throw new IOException("error reading package list");
+ }
+ int equalsIndex = line.lastIndexOf(packageSuffix);
+ String fileName =
+ line.substring(packageIndex + packagePrefix.length(), equalsIndex);
+ return fileName;
+ }
}
-
return null;
}
+ private static File getFileFromPackageName(String packageName) throws IOException {
+ String filename = getFilenameFromPackageName(packageName);
+ if (filename == null) {
+ // Should not happen (function is only called when we know the package exists)
+ throw new IOException("package not found");
+ }
+ return new File(filename);
+ }
+
private static void extractMetaData(String packageName) throws IOException {
File apkFile = getFileFromPackageName(packageName);
APKMetaData apkMetaData = PatchUtils.getAPKMetaData(apkFile);
diff --git a/adb/fastdeploy/deploypatchgenerator/src/com/android/fastdeploy/DeployPatchGenerator.java b/adb/fastdeploy/deploypatchgenerator/src/com/android/fastdeploy/DeployPatchGenerator.java
index 5577364..24b2eab 100644
--- a/adb/fastdeploy/deploypatchgenerator/src/com/android/fastdeploy/DeployPatchGenerator.java
+++ b/adb/fastdeploy/deploypatchgenerator/src/com/android/fastdeploy/DeployPatchGenerator.java
@@ -61,22 +61,22 @@
File hostFile = new File(apkPath);
List<APKEntry> deviceZipEntries = getMetadataFromFile(deviceMetadataPath);
+ System.err.println("Device Entries (" + deviceZipEntries.size() + ")");
if (verbose) {
sb = new StringBuilder();
for (APKEntry entry : deviceZipEntries) {
APKEntryToString(entry, sb);
}
- System.err.println("Device Entries (" + deviceZipEntries.size() + ")");
System.err.println(sb.toString());
}
List<APKEntry> hostFileEntries = PatchUtils.getAPKMetaData(hostFile).getEntriesList();
+ System.err.println("Host Entries (" + hostFileEntries.size() + ")");
if (verbose) {
sb = new StringBuilder();
for (APKEntry entry : hostFileEntries) {
APKEntryToString(entry, sb);
}
- System.err.println("Host Entries (" + hostFileEntries.size() + ")");
System.err.println(sb.toString());
}
@@ -130,7 +130,8 @@
for (APKEntry deviceZipEntry : deviceZipEntries) {
for (APKEntry hostZipEntry : hostZipEntries) {
- if (deviceZipEntry.getCrc32() == hostZipEntry.getCrc32()) {
+ if (deviceZipEntry.getCrc32() == hostZipEntry.getCrc32() &&
+ deviceZipEntry.getFileName().equals(hostZipEntry.getFileName())) {
identicalContents.add(new SimpleEntry(deviceZipEntry, hostZipEntry));
}
}
diff --git a/adb/sockets.cpp b/adb/sockets.cpp
index 8b07f74..1bd57c1 100644
--- a/adb/sockets.cpp
+++ b/adb/sockets.cpp
@@ -348,11 +348,8 @@
asocket* create_local_service_socket(const char* name, atransport* transport) {
#if !ADB_HOST
- if (!strcmp(name, "jdwp")) {
- return create_jdwp_service_socket();
- }
- if (!strcmp(name, "track-jdwp")) {
- return create_jdwp_tracker_service_socket();
+ if (asocket* s = daemon_service_to_socket(name); s) {
+ return s;
}
#endif
int fd = service_to_fd(name, transport);
diff --git a/adb/transport.cpp b/adb/transport.cpp
index c2d4917..f59a135 100644
--- a/adb/transport.cpp
+++ b/adb/transport.cpp
@@ -764,6 +764,10 @@
#if ADB_HOST
if (t->IsTcpDevice() && !t->kicked()) {
D("transport: %s unref (attempting reconnection)", t->serial.c_str());
+
+ // We need to clear the transport's keys, so that on the next connection, it tries
+ // again from the beginning.
+ t->ResetKeys();
reconnect_handler.TrackTransport(t);
} else {
D("transport: %s unref (kicking and closing)", t->serial.c_str());
@@ -1009,14 +1013,11 @@
const FeatureSet& supported_features() {
// Local static allocation to avoid global non-POD variables.
static const FeatureSet* features = new FeatureSet{
- kFeatureShell2, kFeatureCmd, kFeatureStat2, kFeatureFixedPushMkdir,
-#if ADB_HOST
- kFeatureApex
-#endif
- // Increment ADB_SERVER_VERSION when adding a feature that adbd needs
- // to know about. Otherwise, the client can be stuck running an old
- // version of the server even after upgrading their copy of adb.
- // (http://b/24370690)
+ kFeatureShell2, kFeatureCmd, kFeatureStat2, kFeatureFixedPushMkdir, kFeatureApex
+ // Increment ADB_SERVER_VERSION when adding a feature that adbd needs
+ // to know about. Otherwise, the client can be stuck running an old
+ // version of the server even after upgrading their copy of adb.
+ // (http://b/24370690)
};
return *features;
@@ -1304,11 +1305,7 @@
void unregister_usb_transport(usb_handle* usb) {
std::lock_guard<std::recursive_mutex> lock(transport_lock);
transport_list.remove_if([usb](atransport* t) {
- auto connection = t->connection();
- if (auto usb_connection = dynamic_cast<UsbConnection*>(connection.get())) {
- return usb_connection->handle_ == usb && t->GetConnectionState() == kCsNoPerm;
- }
- return false;
+ return t->GetUsbHandle() == usb && t->GetConnectionState() == kCsNoPerm;
});
}
#endif
@@ -1331,10 +1328,20 @@
#if ADB_HOST
std::shared_ptr<RSA> atransport::NextKey() {
- if (keys_.empty()) keys_ = adb_auth_get_private_keys();
+ if (keys_.empty()) {
+ LOG(INFO) << "fetching keys for transport " << this->serial_name();
+ keys_ = adb_auth_get_private_keys();
+
+ // We should have gotten at least one key: the one that's automatically generated.
+ CHECK(!keys_.empty());
+ }
std::shared_ptr<RSA> result = keys_[0];
keys_.pop_front();
return result;
}
+
+void atransport::ResetKeys() {
+ keys_.clear();
+}
#endif
diff --git a/adb/transport.h b/adb/transport.h
index 9894bdf..790004f 100644
--- a/adb/transport.h
+++ b/adb/transport.h
@@ -37,6 +37,7 @@
#include "adb.h"
#include "adb_unique_fd.h"
+#include "usb.h"
typedef std::unordered_set<std::string> FeatureSet;
@@ -242,6 +243,9 @@
return connection_;
}
+ void SetUsbHandle(usb_handle* h) { usb_handle_ = h; }
+ usb_handle* GetUsbHandle() { return usb_handle_; }
+
const TransportId id;
size_t ref_count = 0;
bool online = false;
@@ -258,6 +262,7 @@
#if ADB_HOST
std::shared_ptr<RSA> NextKey();
+ void ResetKeys();
#endif
char token[TOKEN_SIZE] = {};
@@ -332,6 +337,9 @@
// The underlying connection object.
std::shared_ptr<Connection> connection_ GUARDED_BY(mutex_);
+ // USB handle for the connection, if available.
+ usb_handle* usb_handle_ = nullptr;
+
// A callback that will be invoked when the atransport needs to reconnect.
ReconnectCallback reconnect_;
diff --git a/adb/transport_usb.cpp b/adb/transport_usb.cpp
index c471bf9..2e5918a 100644
--- a/adb/transport_usb.cpp
+++ b/adb/transport_usb.cpp
@@ -180,6 +180,7 @@
auto connection = std::make_unique<UsbConnection>(h);
t->SetConnection(std::make_unique<BlockingConnectionAdapter>(std::move(connection)));
t->type = kTransportUsb;
+ t->SetUsbHandle(h);
}
int is_adb_interface(int usb_class, int usb_subclass, int usb_protocol) {
diff --git a/base/file.cpp b/base/file.cpp
index d5bb7fe..2f4a517 100644
--- a/base/file.cpp
+++ b/base/file.cpp
@@ -22,6 +22,7 @@
#include <libgen.h>
#include <stdio.h>
#include <stdlib.h>
+#include <string.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
diff --git a/base/include/android-base/unique_fd.h b/base/include/android-base/unique_fd.h
index 4e3879b..4e6c879 100644
--- a/base/include/android-base/unique_fd.h
+++ b/base/include/android-base/unique_fd.h
@@ -16,6 +16,7 @@
#pragma once
+#include <dirent.h>
#include <fcntl.h>
#if !defined(_WIN32)
@@ -231,3 +232,13 @@
template <typename T>
int close(const android::base::unique_fd_impl<T>&)
__attribute__((__unavailable__("close called on unique_fd")));
+
+template <typename T>
+FILE* fdopen(const android::base::unique_fd_impl<T>&, const char* mode)
+ __attribute__((__unavailable__("fdopen takes ownership of the fd passed in; either dup the "
+ "unique_fd, or use android::base::Fdopen to pass ownership")));
+
+template <typename T>
+DIR* fdopendir(const android::base::unique_fd_impl<T>&) __attribute__((
+ __unavailable__("fdopendir takes ownership of the fd passed in; either dup the "
+ "unique_fd, or use android::base::Fdopendir to pass ownership")));
diff --git a/base/logging.cpp b/base/logging.cpp
index bd09069..f89168c 100644
--- a/base/logging.cpp
+++ b/base/logging.cpp
@@ -417,6 +417,14 @@
}
std::string msg(data_->ToString());
+ if (data_->GetSeverity() == FATAL) {
+#ifdef __ANDROID__
+ // Set the bionic abort message early to avoid liblog doing it
+ // with the individual lines, so that we get the whole message.
+ android_set_abort_message(msg.c_str());
+#endif
+ }
+
{
// Do the actual logging with the lock held.
std::lock_guard<std::mutex> lock(LoggingLock());
diff --git a/debuggerd/Android.bp b/debuggerd/Android.bp
index 03b3287..5167481 100644
--- a/debuggerd/Android.bp
+++ b/debuggerd/Android.bp
@@ -9,7 +9,6 @@
"-Wno-nullability-completeness",
"-Os",
],
- cpp_std: "gnu++17",
local_include_dirs: ["include"],
}
@@ -117,14 +116,21 @@
"libdebuggerd",
"libbacktrace",
"libunwindstack",
- "libdexfile",
+ "libdexfile", // libunwindstack dependency
+ "libdexfile_external", // libunwindstack dependency
+ "libdexfile_support", // libunwindstack dependency
"liblzma",
"libcutils",
],
target: {
recovery: {
cflags: ["-DNO_LIBDEXFILE_SUPPORT"],
- exclude_static_libs: ["libdexfile"],
+ exclude_static_libs: [
+ "libartbase",
+ "libdexfile",
+ "libdexfile_external",
+ "libdexfile_support",
+ ],
},
},
@@ -171,12 +177,22 @@
static_libs: [
"libbacktrace",
+ "libdexfile_external", // libunwindstack dependency
+ "libdexfile_support", // libunwindstack dependency
"libunwindstack",
"liblzma",
"libbase",
"libcutils",
"liblog",
],
+ target: {
+ recovery: {
+ exclude_static_libs: [
+ "libdexfile_external",
+ "libdexfile_support",
+ ],
+ },
+ },
}
cc_test {
@@ -217,6 +233,8 @@
static_libs: [
"libdebuggerd",
+ "libdexfile_external", // libunwindstack dependency
+ "libdexfile_support", // libunwindstack dependency
"libunwindstack",
],
diff --git a/debuggerd/libdebuggerd/test/tombstone_test.cpp b/debuggerd/libdebuggerd/test/tombstone_test.cpp
index 421ce43..d24c887 100644
--- a/debuggerd/libdebuggerd/test/tombstone_test.cpp
+++ b/debuggerd/libdebuggerd/test/tombstone_test.cpp
@@ -15,6 +15,7 @@
*/
#include <stdlib.h>
+#include <time.h>
#include <memory>
#include <string>
@@ -494,3 +495,10 @@
expected += android::base::StringPrintf("ABI: '%s'\n", ABI_STRING);
ASSERT_STREQ(expected.c_str(), amfd_data_.c_str());
}
+
+TEST_F(TombstoneTest, dump_timestamp) {
+ setenv("TZ", "UTC", 1);
+ tzset();
+ dump_timestamp(&log_, 0);
+ ASSERT_STREQ("Timestamp: 1970-01-01 00:00:00+0000\n", amfd_data_.c_str());
+}
diff --git a/debuggerd/libdebuggerd/tombstone.cpp b/debuggerd/libdebuggerd/tombstone.cpp
index 1179263..b20014f 100644
--- a/debuggerd/libdebuggerd/tombstone.cpp
+++ b/debuggerd/libdebuggerd/tombstone.cpp
@@ -78,6 +78,15 @@
_LOG(log, logtype::HEADER, "ABI: '%s'\n", ABI_STRING);
}
+static void dump_timestamp(log_t* log, time_t time) {
+ struct tm tm;
+ localtime_r(&time, &tm);
+
+ char buf[strlen("1970-01-01 00:00:00+0830") + 1];
+ strftime(buf, sizeof(buf), "%F %T%z", &tm);
+ _LOG(log, logtype::HEADER, "Timestamp: %s\n", buf);
+}
+
static void dump_probable_cause(log_t* log, const siginfo_t* si, BacktraceMap* map) {
std::string cause;
if (si->si_signo == SIGSEGV && si->si_code == SEGV_MAPERR) {
@@ -654,6 +663,7 @@
_LOG(&log, logtype::HEADER, "*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***\n");
dump_header_info(&log);
+ dump_timestamp(&log, time(nullptr));
auto it = threads.find(target_thread);
if (it == threads.end()) {
diff --git a/fastboot/Android.bp b/fastboot/Android.bp
index 8006c41..ead2105 100644
--- a/fastboot/Android.bp
+++ b/fastboot/Android.bp
@@ -144,8 +144,6 @@
static_libs: [
"libhealthhalutils",
],
-
- cpp_std: "c++17",
}
cc_defaults {
@@ -212,7 +210,6 @@
name: "libfastboot",
defaults: ["fastboot_host_defaults"],
- cpp_std: "c++17",
srcs: [
"bootimg_utils.cpp",
"fastboot.cpp",
diff --git a/fastboot/device/flashing.cpp b/fastboot/device/flashing.cpp
index 343661d..963916c 100644
--- a/fastboot/device/flashing.cpp
+++ b/fastboot/device/flashing.cpp
@@ -153,6 +153,7 @@
if (!FlashPartitionTable(super_name, *new_metadata.get())) {
return device->WriteFail("Unable to flash new partition table");
}
+ fs_mgr_overlayfs_teardown();
return device->WriteOkay("Successfully flashed partition table");
}
@@ -186,5 +187,6 @@
if (!UpdateAllPartitionMetadata(device, super_name, *new_metadata.get())) {
return device->WriteFail("Unable to write new partition table");
}
+ fs_mgr_overlayfs_teardown();
return device->WriteOkay("Successfully updated partition table");
}
diff --git a/fastboot/fastboot.cpp b/fastboot/fastboot.cpp
index 0978ec1..0b8d9b2 100644
--- a/fastboot/fastboot.cpp
+++ b/fastboot/fastboot.cpp
@@ -46,6 +46,7 @@
#include <chrono>
#include <functional>
#include <regex>
+#include <string>
#include <thread>
#include <utility>
#include <vector>
@@ -78,6 +79,7 @@
using android::base::Split;
using android::base::Trim;
using android::base::unique_fd;
+using namespace std::string_literals;
static const char* serial = nullptr;
@@ -1106,6 +1108,14 @@
return fb->GetVar("is-logical:" + partition, &value) == fastboot::SUCCESS && value == "yes";
}
+static bool is_retrofit_device() {
+ std::string value;
+ if (fb->GetVar("super-partition-name", &value) != fastboot::SUCCESS) {
+ return false;
+ }
+ return android::base::StartsWith(value, "system_");
+}
+
static void do_flash(const char* pname, const char* fname) {
struct fastboot_buffer buf;
@@ -1148,6 +1158,10 @@
std::this_thread::sleep_for(std::chrono::milliseconds(1000));
fb->set_transport(open_device());
+
+ if (!is_userspace_fastboot()) {
+ die("Failed to boot into userspace fastboot; one or more components might be unbootable.");
+ }
}
class ImageSource {
@@ -1304,9 +1318,6 @@
if (!is_userspace_fastboot()) {
reboot_to_userspace_fastboot();
}
- if (!is_userspace_fastboot()) {
- die("Failed to boot into userspace; one or more components might be unbootable.");
- }
std::string super_name;
if (fb->GetVar("super-partition-name", &super_name) != fastboot::RetCode::SUCCESS) {
@@ -1319,6 +1330,19 @@
command += ":wipe";
}
fb->RawCommand(command, "Updating super partition");
+
+ // Retrofit devices have two super partitions, named super_a and super_b.
+ // On these devices, secondary slots must be flashed as physical
+ // partitions (otherwise they would not mount on first boot). To enforce
+ // this, we delete any logical partitions for the "other" slot.
+ if (is_retrofit_device()) {
+ for (const auto& [image, slot] : os_images_) {
+ std::string partition_name = image->part_name + "_"s + slot;
+ if (image->IsSecondary() && is_logical(partition_name)) {
+ fb->DeletePartition(partition_name);
+ }
+ }
+ }
}
class ZipImageSource final : public ImageSource {
@@ -1518,7 +1542,7 @@
return false;
}
auto path = find_item_given_name("super_empty.img");
- if (path.empty()) {
+ if (path.empty() || access(path.c_str(), R_OK)) {
return false;
}
auto metadata = android::fs_mgr::ReadFromImageFile(path);
@@ -1939,8 +1963,7 @@
fb->RebootTo("recovery");
fb->WaitForDisconnect();
} else if (wants_reboot_fastboot) {
- fb->RebootTo("fastboot");
- fb->WaitForDisconnect();
+ reboot_to_userspace_fastboot();
}
fprintf(stderr, "Finished. Total time: %.3fs\n", (now() - start));
diff --git a/fastboot/fuzzy_fastboot/main.cpp b/fastboot/fuzzy_fastboot/main.cpp
index 479a06a..ef34771 100644
--- a/fastboot/fuzzy_fastboot/main.cpp
+++ b/fastboot/fuzzy_fastboot/main.cpp
@@ -281,7 +281,7 @@
std::vector<std::string> vars;
EXPECT_EQ(fb->GetVarAll(&vars), SUCCESS) << "getvar:all failed";
EXPECT_GT(vars.size(), 0) << "getvar:all did not respond with any INFO responses";
- for (const auto s : vars) {
+ for (const auto& s : vars) {
EXPECT_LE(s.size(), FB_RESPONSE_SZ - 4)
<< "getvar:all included an INFO response: 'INFO" + s << "' which is too long";
}
@@ -316,7 +316,7 @@
EXPECT_GT(parts.size(), 0)
<< "getvar:all did not report any partition-size: through INFO responses";
std::set<std::string> allowed{"ext4", "f2fs", "raw"};
- for (const auto p : parts) {
+ for (const auto& p : parts) {
EXPECT_GE(std::get<1>(p), 0);
std::string part(std::get<0>(p));
std::set<std::string> allowed{"ext4", "f2fs", "raw"};
@@ -355,7 +355,7 @@
if (num_slots > 0) {
EXPECT_EQ(fb->GetVar("current-slot", &var), SUCCESS) << "getvar:current-slot failed";
- for (const auto p : parts) {
+ for (const auto& p : parts) {
std::string part(std::get<0>(p));
std::regex reg("([[:graph:]]*)_([[:lower:]])");
std::smatch sm;
@@ -378,7 +378,7 @@
}
}
// Ensure each partition has the correct slot suffix
- for (const auto iter : part_slots) {
+ for (const auto& iter : part_slots) {
const std::set<char>& char_set = iter.second;
std::string chars;
for (char c : char_set) {
@@ -572,7 +572,7 @@
std::vector<std::tuple<std::string, uint64_t>> parts;
EXPECT_EQ(fb->Partitions(&parts), SUCCESS) << "getvar:all failed in locked mode";
std::string resp;
- for (const auto tup : parts) {
+ for (const auto& tup : parts) {
EXPECT_EQ(fb->Flash(std::get<0>(tup), &resp), DEVICE_FAIL)
<< "Device did not respond with FAIL when trying to flash '" << std::get<0>(tup)
<< "' in locked mode";
@@ -585,7 +585,7 @@
std::vector<std::tuple<std::string, uint64_t>> parts;
EXPECT_EQ(fb->Partitions(&parts), SUCCESS) << "getvar:all failed";
std::string resp;
- for (const auto tup : parts) {
+ for (const auto& tup : parts) {
EXPECT_EQ(fb->Erase(std::get<0>(tup), &resp), DEVICE_FAIL)
<< "Device did not respond with FAIL when trying to erase '" << std::get<0>(tup)
<< "' in locked mode";
@@ -601,7 +601,7 @@
EXPECT_EQ(fb->GetVar("slot-count", &resp), SUCCESS) << "getvar:slot-count failed";
int32_t num_slots = strtol(resp.c_str(), nullptr, 10);
- for (const auto tup : parts) {
+ for (const auto& tup : parts) {
std::string part(std::get<0>(tup));
std::regex reg("([[:graph:]]*)_([[:lower:]])");
std::smatch sm;
@@ -1554,12 +1554,12 @@
void GenerateXmlTests(const extension::Configuration& config) {
// Build the getvar tests
- for (const auto it : config.getvars) {
+ for (const auto& it : config.getvars) {
GETVAR_XML_TESTS.push_back(std::make_pair(it.first, it.second));
}
// Build the partition tests, to interface with gtest we need to do it this way
- for (const auto it : config.partitions) {
+ for (const auto& it : config.partitions) {
const auto tup = std::make_tuple(it.first, it.second);
PARTITION_XML_TESTS.push_back(tup); // All partitions
@@ -1581,7 +1581,7 @@
// Build the packed tests, only useful if we have a hash
if (!config.checksum.empty()) {
- for (const auto it : config.packed) {
+ for (const auto& it : config.packed) {
for (const auto& test : it.second.tests) {
const auto tup = std::make_tuple(it.first, test);
if (test.expect == extension::OKAY) { // only testing the success case
@@ -1608,7 +1608,7 @@
}
// Build oem tests
- for (const auto it : config.oem) {
+ for (const auto& it : config.oem) {
auto oem_cmd = it.second;
for (const auto& t : oem_cmd.tests) {
OEM_XML_TESTS.push_back(std::make_tuple(it.first, oem_cmd.restricted, t));
diff --git a/fs_mgr/Android.bp b/fs_mgr/Android.bp
index 6c8a943..ac138a3 100644
--- a/fs_mgr/Android.bp
+++ b/fs_mgr/Android.bp
@@ -23,10 +23,6 @@
cflags: [
"-Wall",
"-Werror",
- "-Wno-unused-variable",
- ],
- cppflags: [
- "-std=gnu++1z",
],
}
@@ -42,8 +38,6 @@
"fs_mgr.cpp",
"fs_mgr_format.cpp",
"fs_mgr_verity.cpp",
- "fs_mgr_avb.cpp",
- "fs_mgr_avb_ops.cpp",
"fs_mgr_dm_linear.cpp",
"fs_mgr_overlayfs.cpp",
"fs_mgr_vendor_overlay.cpp",
@@ -61,10 +55,12 @@
],
static_libs: [
"libavb",
+ "libfs_avb",
"libfstab",
"libdm",
],
export_static_lib_headers: [
+ "libfs_avb",
"libfstab",
"libdm",
],
@@ -104,3 +100,28 @@
export_include_dirs: ["include_fstab"],
header_libs: ["libbase_headers"],
}
+
+cc_library_static {
+ name: "libfs_avb",
+ defaults: ["fs_mgr_defaults"],
+ recovery_available: true,
+ export_include_dirs: ["libfs_avb/include"],
+ srcs: [
+ "libfs_avb/avb_ops.cpp",
+ "libfs_avb/fs_avb.cpp",
+ ],
+ static_libs: [
+ "libavb",
+ "libfstab",
+ "libdm",
+ ],
+ export_static_lib_headers: [
+ "libfstab",
+ ],
+ shared_libs: [
+ "libcrypto",
+ ],
+ header_libs: [
+ "libbase_headers",
+ ],
+}
diff --git a/fs_mgr/README.overlayfs.md b/fs_mgr/README.overlayfs.md
new file mode 100644
index 0000000..960410c
--- /dev/null
+++ b/fs_mgr/README.overlayfs.md
@@ -0,0 +1,110 @@
+Android Overlayfs integration with adb remount
+==============================================
+
+Introduction
+------------
+
+Users working with userdebug or eng builds expect to be able to
+remount the system partition as read-write and then add or modify
+any number of files without reflashing the system image, which is
+understandably efficient for a development cycle.
+Limited memory systems that chose to use readonly filesystems like
+*squashfs*, or *Logical Resizable Android Partitions* which land
+system partition images right-sized, and with filesystem that have
+been deduped on the block level to compress the content; means that
+either a remount is not possible directly, or when done offers
+little or no utility because of remaining space limitations or
+support logistics.
+
+*Overlayfs* comes to the rescue for these debug scenarios, and logic
+will _automatically_ setup backing storage for a writable filesystem
+as an upper reference, and mount overtop the lower. These actions
+will be performed in the **adb disable-verity** and **adb remount**
+requests.
+
+Operations
+----------
+
+### Cookbook
+
+The typical action to utilize the remount facility is:
+
+ $ adb root
+ $ adb disable-verity
+ $ adb reboot
+ $ adb wait-for-device
+ $ adb root
+ $ adb remount
+
+Followed by one of the following:
+
+ $ adb stop
+ $ adb sync
+ $ adb start
+ $ adb reboot
+
+*or*
+
+ $ adb push <source> <destination>
+ $ adb reboot
+
+Note that the sequence above:
+
+ $ adb disable-verity
+ $ adb reboot
+
+can be replaced with:
+
+ $ adb reboot -R
+
+which will not reboot if everything is already prepared and ready
+to go.
+
+None of this changes if *overlayfs* needs to be engaged.
+The decisions whether to use traditional direct filesystem remount,
+or one wrapped by *overlayfs* is automatically determined based on
+a probe of the filesystem types and space remaining.
+
+### Backing Storage
+
+When *overlayfs* logic is feasible, it will use either the
+**/cache/overlay/** directory for non-A/B devices, or the
+**/mnt/scratch/overlay** directory for A/B devices that have
+access to *Logical Resizeable Android Partitions*.
+The backing store is used as soon as possible in the boot
+process and can occur at first stage init, or at the
+mount_all init rc commands.
+
+This early as possible attachment of *overlayfs* means that
+*sepolicy* or *init* itself can also be pushed and used after
+the exec phases that accompany each stage.
+
+Caveats
+-------
+
+- Space used in the backing storage is on a file by file basis
+ and will require more space than if updated in place. As such
+ it is important to be mindful of any wasted space, for instance
+ **BOARD_<partition>IMAGE_PARTITION_RESERVED_SIZE** being defined
+ will have a negative impact on the overall right-sizing of images
+ and thus free dynamic partition space.
+- Kernel must have CONFIG_OVERLAY_FS=y and will need to be patched
+ with "*overlayfs: override_creds=off option bypass creator_cred*"
+ if higher than 4.6.
+- *adb enable-verity* will free up overlayfs and as a bonus the
+ device will be reverted pristine to before any content was updated.
+ Update engine does not take advantage of this, will perform a full OTA.
+- Update engine may not run if *fs_mgr_overlayfs_is_setup*() reports
+ true as adb remount overrides are incompatable with an OTA resources.
+- For implementation simplicity on retrofit dynamic partition devices,
+ take the whole alternate super (eg: if "*a*" slot, then the whole of
+ "*system_b*").
+ Since landing a filesystem on the alternate super physical device
+ without differentiating if it is setup to support logical or physical,
+ the alternate slot metadata and previous content will be lost.
+- If dynamic partitions runs out of space, resizing a logical
+ partition larger may fail because of the scratch partition.
+ If this happens, either fastboot flashall or adb enable-verity can
+ be used to clear scratch storage to permit the flash.
+ Then reinstate the overrides and continue.
+- File bugs or submit fixes for review.
diff --git a/fs_mgr/fs_mgr.cpp b/fs_mgr/fs_mgr.cpp
index 6310238..88f7a2c 100644
--- a/fs_mgr/fs_mgr.cpp
+++ b/fs_mgr/fs_mgr.cpp
@@ -20,6 +20,7 @@
#include <dirent.h>
#include <errno.h>
#include <fcntl.h>
+#include <inttypes.h>
#include <libgen.h>
#include <stdio.h>
#include <stdlib.h>
@@ -34,6 +35,7 @@
#include <unistd.h>
#include <functional>
+#include <map>
#include <memory>
#include <string>
#include <thread>
@@ -53,6 +55,7 @@
#include <ext4_utils/ext4_sb.h>
#include <ext4_utils/ext4_utils.h>
#include <ext4_utils/wipe.h>
+#include <fs_avb/fs_avb.h>
#include <fs_mgr_overlayfs.h>
#include <libdm/dm.h>
#include <liblp/metadata_format.h>
@@ -62,7 +65,6 @@
#include <log/log_properties.h>
#include <logwrap/logwrap.h>
-#include "fs_mgr_avb.h"
#include "fs_mgr_priv.h"
#define KEY_LOC_PROP "ro.crypto.keyfile.userdata"
@@ -80,8 +82,16 @@
#define ARRAY_SIZE(a) (sizeof(a) / sizeof(*(a)))
+using android::base::Realpath;
+using android::base::StartsWith;
+using android::base::unique_fd;
using android::dm::DeviceMapper;
using android::dm::DmDeviceState;
+using android::fs_mgr::AvbHandle;
+using android::fs_mgr::AvbHashtreeResult;
+using android::fs_mgr::AvbUniquePtr;
+
+using namespace std::literals;
// record fs stat
enum FsStatFlags {
@@ -95,7 +105,7 @@
FS_STAT_FULL_MOUNT_FAILED = 0x0100,
FS_STAT_E2FSCK_FAILED = 0x0200,
FS_STAT_E2FSCK_FS_FIXED = 0x0400,
- FS_STAT_EXT4_INVALID_MAGIC = 0x0800,
+ FS_STAT_INVALID_MAGIC = 0x0800,
FS_STAT_TOGGLE_QUOTAS_FAILED = 0x10000,
FS_STAT_SET_RESERVED_BLOCKS_FAILED = 0x20000,
FS_STAT_ENABLE_ENCRYPTION_FAILED = 0x40000,
@@ -123,10 +133,10 @@
}
}
-static void log_fs_stat(const char* blk_device, int fs_stat)
-{
+static void log_fs_stat(const std::string& blk_device, int fs_stat) {
if ((fs_stat & FS_STAT_IS_EXT4) == 0) return; // only log ext4
- std::string msg = android::base::StringPrintf("\nfs_stat,%s,0x%x\n", blk_device, fs_stat);
+ std::string msg =
+ android::base::StringPrintf("\nfs_stat,%s,0x%x\n", blk_device.c_str(), fs_stat);
android::base::unique_fd fd(TEMP_FAILURE_RETRY(open(FSCK_LOG_FILE, O_WRONLY | O_CLOEXEC |
O_APPEND | O_CREAT, 0664)));
if (fd == -1 || !android::base::WriteStringToFd(msg, fd)) {
@@ -138,6 +148,18 @@
return fs_type == "ext4" || fs_type == "ext3" || fs_type == "ext2";
}
+static bool is_f2fs(const std::string& fs_type) {
+ return fs_type == "f2fs";
+}
+
+static std::string realpath(const std::string& blk_device) {
+ std::string real_path;
+ if (!Realpath(blk_device, &real_path)) {
+ real_path = blk_device;
+ }
+ return real_path;
+}
+
static bool should_force_check(int fs_stat) {
return fs_stat &
(FS_STAT_E2FSCK_F_ALWAYS | FS_STAT_UNCLEAN_SHUTDOWN | FS_STAT_QUOTA_ENABLED |
@@ -146,20 +168,21 @@
FS_STAT_SET_RESERVED_BLOCKS_FAILED | FS_STAT_ENABLE_ENCRYPTION_FAILED);
}
-static void check_fs(const char *blk_device, char *fs_type, char *target, int *fs_stat)
-{
+static void check_fs(const std::string& blk_device, const std::string& fs_type,
+ const std::string& target, int* fs_stat) {
int status;
int ret;
long tmpmnt_flags = MS_NOATIME | MS_NOEXEC | MS_NOSUID;
- char tmpmnt_opts[64] = "errors=remount-ro";
- const char* e2fsck_argv[] = {E2FSCK_BIN, "-y", blk_device};
- const char* e2fsck_forced_argv[] = {E2FSCK_BIN, "-f", "-y", blk_device};
+ auto tmpmnt_opts = "errors=remount-ro"s;
+ const char* e2fsck_argv[] = {E2FSCK_BIN, "-y", blk_device.c_str()};
+ const char* e2fsck_forced_argv[] = {E2FSCK_BIN, "-f", "-y", blk_device.c_str()};
+
+ if (*fs_stat & FS_STAT_INVALID_MAGIC) { // will fail, so do not try
+ return;
+ }
/* Check for the types of filesystems we know how to check */
if (is_extfs(fs_type)) {
- if (*fs_stat & FS_STAT_EXT4_INVALID_MAGIC) { // will fail, so do not try
- return;
- }
/*
* First try to mount and unmount the filesystem. We do this because
* the kernel is more efficient than e2fsck in running the journal and
@@ -175,18 +198,19 @@
*/
if (!(*fs_stat & FS_STAT_FULL_MOUNT_FAILED)) { // already tried if full mount failed
errno = 0;
- if (!strcmp(fs_type, "ext4")) {
+ if (fs_type == "ext4") {
// This option is only valid with ext4
- strlcat(tmpmnt_opts, ",nomblk_io_submit", sizeof(tmpmnt_opts));
+ tmpmnt_opts += ",nomblk_io_submit";
}
- ret = mount(blk_device, target, fs_type, tmpmnt_flags, tmpmnt_opts);
+ ret = mount(blk_device.c_str(), target.c_str(), fs_type.c_str(), tmpmnt_flags,
+ tmpmnt_opts.c_str());
PINFO << __FUNCTION__ << "(): mount(" << blk_device << "," << target << "," << fs_type
<< ")=" << ret;
if (!ret) {
bool umounted = false;
int retry_count = 5;
while (retry_count-- > 0) {
- umounted = umount(target) == 0;
+ umounted = umount(target.c_str()) == 0;
if (umounted) {
LINFO << __FUNCTION__ << "(): unmount(" << target << ") succeeded";
break;
@@ -209,10 +233,10 @@
* (e.g. recent SDK system images). Detect these and skip the check.
*/
if (access(E2FSCK_BIN, X_OK)) {
- LINFO << "Not running " << E2FSCK_BIN << " on " << blk_device
+ LINFO << "Not running " << E2FSCK_BIN << " on " << realpath(blk_device)
<< " (executable not in system image)";
} else {
- LINFO << "Running " << E2FSCK_BIN << " on " << blk_device;
+ LINFO << "Running " << E2FSCK_BIN << " on " << realpath(blk_device);
if (should_force_check(*fs_stat)) {
ret = android_fork_execvp_ext(
ARRAY_SIZE(e2fsck_forced_argv), const_cast<char**>(e2fsck_forced_argv), &status,
@@ -232,13 +256,9 @@
*fs_stat |= FS_STAT_E2FSCK_FS_FIXED;
}
}
- } else if (!strcmp(fs_type, "f2fs")) {
- const char *f2fs_fsck_argv[] = {
- F2FS_FSCK_BIN,
- "-a",
- blk_device
- };
- LINFO << "Running " << F2FS_FSCK_BIN << " -a " << blk_device;
+ } else if (is_f2fs(fs_type)) {
+ const char* f2fs_fsck_argv[] = {F2FS_FSCK_BIN, "-a", blk_device.c_str()};
+ LINFO << "Running " << F2FS_FSCK_BIN << " -a " << realpath(blk_device);
ret = android_fork_execvp_ext(ARRAY_SIZE(f2fs_fsck_argv),
const_cast<char **>(f2fs_fsck_argv),
@@ -272,9 +292,10 @@
}
// Read the primary superblock from an ext4 filesystem. On failure return
-// false. If it's not an ext4 filesystem, also set FS_STAT_EXT4_INVALID_MAGIC.
-static bool read_ext4_superblock(const char* blk_device, struct ext4_super_block* sb, int* fs_stat) {
- android::base::unique_fd fd(TEMP_FAILURE_RETRY(open(blk_device, O_RDONLY | O_CLOEXEC)));
+// false. If it's not an ext4 filesystem, also set FS_STAT_INVALID_MAGIC.
+static bool read_ext4_superblock(const std::string& blk_device, struct ext4_super_block* sb,
+ int* fs_stat) {
+ android::base::unique_fd fd(TEMP_FAILURE_RETRY(open(blk_device.c_str(), O_RDONLY | O_CLOEXEC)));
if (fd < 0) {
PERROR << "Failed to open '" << blk_device << "'";
@@ -289,7 +310,7 @@
if (!is_ext4_superblock_valid(sb)) {
LINFO << "Invalid ext4 superblock on '" << blk_device << "'";
// not a valid fs, tune2fs, fsck, and mount will all fail.
- *fs_stat |= FS_STAT_EXT4_INVALID_MAGIC;
+ *fs_stat |= FS_STAT_INVALID_MAGIC;
return false;
}
*fs_stat |= FS_STAT_IS_EXT4;
@@ -315,10 +336,10 @@
}
// Enable/disable quota support on the filesystem if needed.
-static void tune_quota(const char* blk_device, const struct fstab_rec* rec,
+static void tune_quota(const std::string& blk_device, const FstabEntry& entry,
const struct ext4_super_block* sb, int* fs_stat) {
bool has_quota = (sb->s_feature_ro_compat & cpu_to_le32(EXT4_FEATURE_RO_COMPAT_QUOTA)) != 0;
- bool want_quota = fs_mgr_is_quota(rec) != 0;
+ bool want_quota = entry.fs_mgr_flags.quota;
if (has_quota == want_quota) {
return;
@@ -330,7 +351,7 @@
return;
}
- const char* argv[] = {TUNE2FS_BIN, nullptr, nullptr, blk_device};
+ const char* argv[] = {TUNE2FS_BIN, nullptr, nullptr, blk_device.c_str()};
if (want_quota) {
LINFO << "Enabling quotas on " << blk_device;
@@ -351,16 +372,16 @@
}
// Set the number of reserved filesystem blocks if needed.
-static void tune_reserved_size(const char* blk_device, const struct fstab_rec* rec,
+static void tune_reserved_size(const std::string& blk_device, const FstabEntry& entry,
const struct ext4_super_block* sb, int* fs_stat) {
- if (!(rec->fs_mgr_flags & MF_RESERVEDSIZE)) {
+ if (!entry.fs_mgr_flags.reserved_size) {
return;
}
// The size to reserve is given in the fstab, but we won't reserve more
// than 2% of the filesystem.
const uint64_t max_reserved_blocks = ext4_blocks_count(sb) * 0.02;
- uint64_t reserved_blocks = rec->reserved_size / EXT4_BLOCK_SIZE(sb);
+ uint64_t reserved_blocks = entry.reserved_size / EXT4_BLOCK_SIZE(sb);
if (reserved_blocks > max_reserved_blocks) {
LWARNING << "Reserved blocks " << reserved_blocks << " is too large; "
@@ -383,7 +404,8 @@
auto reserved_blocks_str = std::to_string(reserved_blocks);
auto reserved_gid_str = std::to_string(AID_RESERVED_DISK);
const char* argv[] = {
- TUNE2FS_BIN, "-r", reserved_blocks_str.c_str(), "-g", reserved_gid_str.c_str(), blk_device};
+ TUNE2FS_BIN, "-r", reserved_blocks_str.c_str(), "-g", reserved_gid_str.c_str(),
+ blk_device.c_str()};
if (!run_tune2fs(argv, ARRAY_SIZE(argv))) {
LERROR << "Failed to run " TUNE2FS_BIN " to set the number of reserved blocks on "
<< blk_device;
@@ -392,10 +414,10 @@
}
// Enable file-based encryption if needed.
-static void tune_encrypt(const char* blk_device, const struct fstab_rec* rec,
+static void tune_encrypt(const std::string& blk_device, const FstabEntry& entry,
const struct ext4_super_block* sb, int* fs_stat) {
bool has_encrypt = (sb->s_feature_incompat & cpu_to_le32(EXT4_FEATURE_INCOMPAT_ENCRYPT)) != 0;
- bool want_encrypt = fs_mgr_is_file_encrypted(rec) != 0;
+ bool want_encrypt = entry.fs_mgr_flags.file_encryption;
if (has_encrypt || !want_encrypt) {
return;
@@ -407,7 +429,7 @@
return;
}
- const char* argv[] = {TUNE2FS_BIN, "-Oencrypt", blk_device};
+ const char* argv[] = {TUNE2FS_BIN, "-Oencrypt", blk_device.c_str()};
LINFO << "Enabling ext4 encryption on " << blk_device;
if (!run_tune2fs(argv, ARRAY_SIZE(argv))) {
@@ -417,6 +439,36 @@
}
}
+// Read the primary superblock from an f2fs filesystem. On failure return
+// false. If it's not an f2fs filesystem, also set FS_STAT_INVALID_MAGIC.
+#define F2FS_BLKSIZE 4096
+#define F2FS_SUPER_OFFSET 1024
+static bool read_f2fs_superblock(const std::string& blk_device, int* fs_stat) {
+ android::base::unique_fd fd(TEMP_FAILURE_RETRY(open(blk_device.c_str(), O_RDONLY | O_CLOEXEC)));
+ __le32 sb1, sb2;
+
+ if (fd < 0) {
+ PERROR << "Failed to open '" << blk_device << "'";
+ return false;
+ }
+
+ if (pread(fd, &sb1, sizeof(sb1), F2FS_SUPER_OFFSET) != sizeof(sb1)) {
+ PERROR << "Can't read '" << blk_device << "' superblock1";
+ return false;
+ }
+ if (pread(fd, &sb2, sizeof(sb2), F2FS_BLKSIZE + F2FS_SUPER_OFFSET) != sizeof(sb2)) {
+ PERROR << "Can't read '" << blk_device << "' superblock2";
+ return false;
+ }
+
+ if (sb1 != cpu_to_le32(F2FS_SUPER_MAGIC) && sb2 != cpu_to_le32(F2FS_SUPER_MAGIC)) {
+ LINFO << "Invalid f2fs superblock on '" << blk_device << "'";
+ *fs_stat |= FS_STAT_INVALID_MAGIC;
+ return false;
+ }
+ return true;
+}
+
//
// Prepare the filesystem on the given block device to be mounted.
//
@@ -426,10 +478,10 @@
// If needed, we'll also enable (or disable) filesystem features as specified by
// the fstab record.
//
-static int prepare_fs_for_mount(const char* blk_device, const struct fstab_rec* rec) {
+static int prepare_fs_for_mount(const std::string& blk_device, const FstabEntry& entry) {
int fs_stat = 0;
- if (is_extfs(rec->fs_type)) {
+ if (is_extfs(entry.fs_type)) {
struct ext4_super_block sb;
if (read_ext4_superblock(blk_device, &sb, &fs_stat)) {
@@ -442,60 +494,43 @@
}
// Note: quotas should be enabled before running fsck.
- tune_quota(blk_device, rec, &sb, &fs_stat);
+ tune_quota(blk_device, entry, &sb, &fs_stat);
} else {
return fs_stat;
}
+ } else if (is_f2fs(entry.fs_type)) {
+ if (!read_f2fs_superblock(blk_device, &fs_stat)) {
+ return fs_stat;
+ }
}
- if ((rec->fs_mgr_flags & MF_CHECK) ||
+ if (entry.fs_mgr_flags.check ||
(fs_stat & (FS_STAT_UNCLEAN_SHUTDOWN | FS_STAT_QUOTA_ENABLED))) {
- check_fs(blk_device, rec->fs_type, rec->mount_point, &fs_stat);
+ check_fs(blk_device, entry.fs_type, entry.mount_point, &fs_stat);
}
- if (is_extfs(rec->fs_type) && (rec->fs_mgr_flags & (MF_RESERVEDSIZE | MF_FILEENCRYPTION))) {
+ if (is_extfs(entry.fs_type) &&
+ (entry.fs_mgr_flags.reserved_size || entry.fs_mgr_flags.file_encryption)) {
struct ext4_super_block sb;
if (read_ext4_superblock(blk_device, &sb, &fs_stat)) {
- tune_reserved_size(blk_device, rec, &sb, &fs_stat);
- tune_encrypt(blk_device, rec, &sb, &fs_stat);
+ tune_reserved_size(blk_device, entry, &sb, &fs_stat);
+ tune_encrypt(blk_device, entry, &sb, &fs_stat);
}
}
return fs_stat;
}
-static void remove_trailing_slashes(char *n)
-{
- int len;
-
- len = strlen(n) - 1;
- while ((*(n + len) == '/') && len) {
- *(n + len) = '\0';
- len--;
- }
-}
-
-/*
- * Mark the given block device as read-only, using the BLKROSET ioctl.
- * Return 0 on success, and -1 on error.
- */
-int fs_mgr_set_blk_ro(const char *blockdev)
-{
- int fd;
- int rc = -1;
- int ON = 1;
-
- fd = TEMP_FAILURE_RETRY(open(blockdev, O_RDONLY | O_CLOEXEC));
+// Mark the given block device as read-only, using the BLKROSET ioctl.
+bool fs_mgr_set_blk_ro(const std::string& blockdev) {
+ unique_fd fd(TEMP_FAILURE_RETRY(open(blockdev.c_str(), O_RDONLY | O_CLOEXEC)));
if (fd < 0) {
- // should never happen
- return rc;
+ return false;
}
- rc = ioctl(fd, BLKROSET, &ON);
- close(fd);
-
- return rc;
+ int ON = 1;
+ return ioctl(fd, BLKROSET, &ON) == 0;
}
// Orange state means the device is unlocked, see the following link for details.
@@ -508,40 +543,34 @@
return false;
}
-/*
- * __mount(): wrapper around the mount() system call which also
- * sets the underlying block device to read-only if the mount is read-only.
- * See "man 2 mount" for return values.
- */
-static int __mount(const char *source, const char *target, const struct fstab_rec *rec)
-{
- unsigned long mountflags = rec->flags;
- int ret;
- int save_errno;
-
- /* We need this because sometimes we have legacy symlinks
- * that are lingering around and need cleaning up.
- */
+// __mount(): wrapper around the mount() system call which also
+// sets the underlying block device to read-only if the mount is read-only.
+// See "man 2 mount" for return values.
+static int __mount(const std::string& source, const std::string& target, const FstabEntry& entry) {
+ // We need this because sometimes we have legacy symlinks that are
+ // lingering around and need cleaning up.
struct stat info;
- if (!lstat(target, &info))
- if ((info.st_mode & S_IFMT) == S_IFLNK)
- unlink(target);
- mkdir(target, 0755);
+ if (lstat(target.c_str(), &info) == 0 && (info.st_mode & S_IFMT) == S_IFLNK) {
+ unlink(target.c_str());
+ }
+ mkdir(target.c_str(), 0755);
errno = 0;
- ret = mount(source, target, rec->fs_type, mountflags, rec->fs_options);
- save_errno = errno;
+ unsigned long mountflags = entry.flags;
+ int ret = mount(source.c_str(), target.c_str(), entry.fs_type.c_str(), mountflags,
+ entry.fs_options.c_str());
+ int save_errno = errno;
const char* target_missing = "";
const char* source_missing = "";
if (save_errno == ENOENT) {
- if (access(target, F_OK)) {
+ if (access(target.c_str(), F_OK)) {
target_missing = "(missing)";
- } else if (access(source, F_OK)) {
+ } else if (access(source.c_str(), F_OK)) {
source_missing = "(missing)";
}
errno = save_errno;
}
PINFO << __FUNCTION__ << "(source=" << source << source_missing << ",target=" << target
- << target_missing << ",type=" << rec->fs_type << ")=" << ret;
+ << target_missing << ",type=" << entry.fs_type << ")=" << ret;
if ((ret == 0) && (mountflags & MS_RDONLY) != 0) {
fs_mgr_set_blk_ro(source);
}
@@ -549,249 +578,208 @@
return ret;
}
-static int fs_match(const char *in1, const char *in2)
-{
- char *n1;
- char *n2;
- int ret;
-
- n1 = strdup(in1);
- n2 = strdup(in2);
-
- remove_trailing_slashes(n1);
- remove_trailing_slashes(n2);
-
- ret = !strcmp(n1, n2);
-
- free(n1);
- free(n2);
-
- return ret;
-}
-
-/*
- * Tries to mount any of the consecutive fstab entries that match
- * the mountpoint of the one given by fstab->recs[start_idx].
- *
- * end_idx: On return, will be the last rec that was looked at.
- * attempted_idx: On return, will indicate which fstab rec
- * succeeded. In case of failure, it will be the start_idx.
- * Returns
- * -1 on failure with errno set to match the 1st mount failure.
- * 0 on success.
- */
-static int mount_with_alternatives(fstab* fstab, int start_idx, int* end_idx, int* attempted_idx) {
- int i;
- int mount_errno = 0;
- int mounted = 0;
-
- if (!end_idx || !attempted_idx || start_idx >= fstab->num_entries) {
- errno = EINVAL;
- if (end_idx) *end_idx = start_idx;
- if (attempted_idx) *attempted_idx = start_idx;
- return -1;
+static bool fs_match(const std::string& in1, const std::string& in2) {
+ if (in1.empty() || in2.empty()) {
+ return false;
}
- /* Hunt down an fstab entry for the same mount point that might succeed */
+ auto in1_end = in1.size() - 1;
+ while (in1_end > 0 && in1[in1_end] == '/') {
+ in1_end--;
+ }
+
+ auto in2_end = in2.size() - 1;
+ while (in2_end > 0 && in2[in2_end] == '/') {
+ in2_end--;
+ }
+
+ if (in1_end != in2_end) {
+ return false;
+ }
+
+ for (size_t i = 0; i <= in1_end; ++i) {
+ if (in1[i] != in2[i]) {
+ return false;
+ }
+ }
+
+ return true;
+}
+
+// Tries to mount any of the consecutive fstab entries that match
+// the mountpoint of the one given by fstab[start_idx].
+//
+// end_idx: On return, will be the last entry that was looked at.
+// attempted_idx: On return, will indicate which fstab entry
+// succeeded. In case of failure, it will be the start_idx.
+// Sets errno to match the 1st mount failure on failure.
+static bool mount_with_alternatives(const Fstab& fstab, int start_idx, int* end_idx,
+ int* attempted_idx) {
+ unsigned long i;
+ int mount_errno = 0;
+ bool mounted = false;
+
+ // Hunt down an fstab entry for the same mount point that might succeed.
for (i = start_idx;
- /* We required that fstab entries for the same mountpoint be consecutive */
- i < fstab->num_entries && !strcmp(fstab->recs[start_idx].mount_point, fstab->recs[i].mount_point);
- i++) {
- /*
- * Don't try to mount/encrypt the same mount point again.
- * Deal with alternate entries for the same point which are required to be all following
- * each other.
- */
- if (mounted) {
- LERROR << __FUNCTION__ << "(): skipping fstab dup mountpoint="
- << fstab->recs[i].mount_point << " rec[" << i
- << "].fs_type=" << fstab->recs[i].fs_type
- << " already mounted as "
- << fstab->recs[*attempted_idx].fs_type;
- continue;
- }
+ // We required that fstab entries for the same mountpoint be consecutive.
+ i < fstab.size() && fstab[start_idx].mount_point == fstab[i].mount_point; i++) {
+ // Don't try to mount/encrypt the same mount point again.
+ // Deal with alternate entries for the same point which are required to be all following
+ // each other.
+ if (mounted) {
+ LERROR << __FUNCTION__ << "(): skipping fstab dup mountpoint=" << fstab[i].mount_point
+ << " rec[" << i << "].fs_type=" << fstab[i].fs_type << " already mounted as "
+ << fstab[*attempted_idx].fs_type;
+ continue;
+ }
- int fs_stat = prepare_fs_for_mount(fstab->recs[i].blk_device, &fstab->recs[i]);
- if (fs_stat & FS_STAT_EXT4_INVALID_MAGIC) {
- LERROR << __FUNCTION__ << "(): skipping mount, invalid ext4, mountpoint="
- << fstab->recs[i].mount_point << " rec[" << i
- << "].fs_type=" << fstab->recs[i].fs_type;
- mount_errno = EINVAL; // continue bootup for FDE
- continue;
- }
+ int fs_stat = prepare_fs_for_mount(fstab[i].blk_device, fstab[i]);
+ if (fs_stat & FS_STAT_INVALID_MAGIC) {
+ LERROR << __FUNCTION__
+ << "(): skipping mount due to invalid magic, mountpoint=" << fstab[i].mount_point
+ << " blk_dev=" << realpath(fstab[i].blk_device) << " rec[" << i
+ << "].fs_type=" << fstab[i].fs_type;
+ mount_errno = EINVAL; // continue bootup for FDE
+ continue;
+ }
- int retry_count = 2;
- while (retry_count-- > 0) {
- if (!__mount(fstab->recs[i].blk_device, fstab->recs[i].mount_point,
- &fstab->recs[i])) {
- *attempted_idx = i;
- mounted = 1;
- if (i != start_idx) {
- LERROR << __FUNCTION__ << "(): Mounted " << fstab->recs[i].blk_device
- << " on " << fstab->recs[i].mount_point
- << " with fs_type=" << fstab->recs[i].fs_type << " instead of "
- << fstab->recs[start_idx].fs_type;
- }
- fs_stat &= ~FS_STAT_FULL_MOUNT_FAILED;
- mount_errno = 0;
- break;
- } else {
- if (retry_count <= 0) break; // run check_fs only once
- fs_stat |= FS_STAT_FULL_MOUNT_FAILED;
- /* back up the first errno for crypto decisions */
- if (mount_errno == 0) {
- mount_errno = errno;
- }
- // retry after fsck
- check_fs(fstab->recs[i].blk_device, fstab->recs[i].fs_type,
- fstab->recs[i].mount_point, &fs_stat);
+ int retry_count = 2;
+ while (retry_count-- > 0) {
+ if (!__mount(fstab[i].blk_device, fstab[i].mount_point, fstab[i])) {
+ *attempted_idx = i;
+ mounted = true;
+ if (i != start_idx) {
+ LERROR << __FUNCTION__ << "(): Mounted " << fstab[i].blk_device << " on "
+ << fstab[i].mount_point << " with fs_type=" << fstab[i].fs_type
+ << " instead of " << fstab[start_idx].fs_type;
}
+ fs_stat &= ~FS_STAT_FULL_MOUNT_FAILED;
+ mount_errno = 0;
+ break;
+ } else {
+ if (retry_count <= 0) break; // run check_fs only once
+ fs_stat |= FS_STAT_FULL_MOUNT_FAILED;
+ // back up the first errno for crypto decisions.
+ if (mount_errno == 0) {
+ mount_errno = errno;
+ }
+ // retry after fsck
+ check_fs(fstab[i].blk_device, fstab[i].fs_type, fstab[i].mount_point, &fs_stat);
}
- log_fs_stat(fstab->recs[i].blk_device, fs_stat);
+ }
+ log_fs_stat(fstab[i].blk_device, fs_stat);
}
/* Adjust i for the case where it was still withing the recs[] */
- if (i < fstab->num_entries) --i;
+ if (i < fstab.size()) --i;
*end_idx = i;
if (!mounted) {
*attempted_idx = start_idx;
errno = mount_errno;
- return -1;
+ return false;
}
- return 0;
+ return true;
}
-static int translate_ext_labels(struct fstab_rec *rec)
-{
- DIR *blockdir = NULL;
- struct dirent *ent;
- char *label;
- size_t label_len;
- int ret = -1;
-
- if (strncmp(rec->blk_device, "LABEL=", 6))
- return 0;
-
- label = rec->blk_device + 6;
- label_len = strlen(label);
-
- if (label_len > 16) {
- LERROR << "FS label is longer than allowed by filesystem";
- goto out;
+static bool TranslateExtLabels(FstabEntry* entry) {
+ if (!StartsWith(entry->blk_device, "LABEL=")) {
+ return true;
}
+ std::string label = entry->blk_device.substr(6);
+ if (label.size() > 16) {
+ LERROR << "FS label is longer than allowed by filesystem";
+ return false;
+ }
- blockdir = opendir("/dev/block");
+ auto blockdir = std::unique_ptr<DIR, decltype(&closedir)>{opendir("/dev/block"), closedir};
if (!blockdir) {
LERROR << "couldn't open /dev/block";
- goto out;
+ return false;
}
- while ((ent = readdir(blockdir))) {
- int fd;
- char super_buf[1024];
- struct ext4_super_block *sb;
-
+ struct dirent* ent;
+ while ((ent = readdir(blockdir.get()))) {
if (ent->d_type != DT_BLK)
continue;
- fd = openat(dirfd(blockdir), ent->d_name, O_RDONLY);
+ unique_fd fd(TEMP_FAILURE_RETRY(
+ openat(dirfd(blockdir.get()), ent->d_name, O_RDONLY | O_CLOEXEC)));
if (fd < 0) {
LERROR << "Cannot open block device /dev/block/" << ent->d_name;
- goto out;
+ return false;
}
+ ext4_super_block super_block;
if (TEMP_FAILURE_RETRY(lseek(fd, 1024, SEEK_SET)) < 0 ||
- TEMP_FAILURE_RETRY(read(fd, super_buf, 1024)) != 1024) {
- /* Probably a loopback device or something else without a readable
- * superblock.
- */
- close(fd);
+ TEMP_FAILURE_RETRY(read(fd, &super_block, sizeof(super_block))) !=
+ sizeof(super_block)) {
+ // Probably a loopback device or something else without a readable superblock.
continue;
}
- sb = (struct ext4_super_block *)super_buf;
- if (sb->s_magic != EXT4_SUPER_MAGIC) {
+ if (super_block.s_magic != EXT4_SUPER_MAGIC) {
LINFO << "/dev/block/" << ent->d_name << " not ext{234}";
continue;
}
- if (!strncmp(label, sb->s_volume_name, label_len)) {
- char *new_blk_device;
+ if (label == super_block.s_volume_name) {
+ std::string new_blk_device = "/dev/block/"s + ent->d_name;
- if (asprintf(&new_blk_device, "/dev/block/%s", ent->d_name) < 0) {
- LERROR << "Could not allocate block device string";
- goto out;
- }
+ LINFO << "resolved label " << entry->blk_device << " to " << new_blk_device;
- LINFO << "resolved label " << rec->blk_device << " to "
- << new_blk_device;
-
- free(rec->blk_device);
- rec->blk_device = new_blk_device;
- ret = 0;
- break;
+ entry->blk_device = new_blk_device;
+ return true;
}
}
-out:
- closedir(blockdir);
- return ret;
+ return false;
}
-static bool needs_block_encryption(const struct fstab_rec* rec)
-{
- if (android::base::GetBoolProperty("ro.vold.forceencryption", false) &&
- fs_mgr_is_encryptable(rec))
+static bool needs_block_encryption(const FstabEntry& entry) {
+ if (android::base::GetBoolProperty("ro.vold.forceencryption", false) && entry.is_encryptable())
return true;
- if (rec->fs_mgr_flags & MF_FORCECRYPT) return true;
- if (rec->fs_mgr_flags & MF_CRYPT) {
- /* Check for existence of convert_fde breadcrumb file */
- char convert_fde_name[PATH_MAX];
- snprintf(convert_fde_name, sizeof(convert_fde_name),
- "%s/misc/vold/convert_fde", rec->mount_point);
- if (access(convert_fde_name, F_OK) == 0) return true;
+ if (entry.fs_mgr_flags.force_crypt) return true;
+ if (entry.fs_mgr_flags.crypt) {
+ // Check for existence of convert_fde breadcrumb file.
+ auto convert_fde_name = entry.mount_point + "/misc/vold/convert_fde";
+ if (access(convert_fde_name.c_str(), F_OK) == 0) return true;
}
- if (rec->fs_mgr_flags & MF_FORCEFDEORFBE) {
- /* Check for absence of convert_fbe breadcrumb file */
- char convert_fbe_name[PATH_MAX];
- snprintf(convert_fbe_name, sizeof(convert_fbe_name),
- "%s/convert_fbe", rec->mount_point);
- if (access(convert_fbe_name, F_OK) != 0) return true;
+ if (entry.fs_mgr_flags.force_fde_or_fbe) {
+ // Check for absence of convert_fbe breadcrumb file.
+ auto convert_fbe_name = entry.mount_point + "/convert_fbe";
+ if (access(convert_fbe_name.c_str(), F_OK) != 0) return true;
}
return false;
}
-static bool should_use_metadata_encryption(const struct fstab_rec* rec) {
- if (!(rec->fs_mgr_flags & (MF_FILEENCRYPTION | MF_FORCEFDEORFBE))) return false;
- if (!(rec->fs_mgr_flags & MF_KEYDIRECTORY)) return false;
- return true;
+static bool should_use_metadata_encryption(const FstabEntry& entry) {
+ return entry.fs_mgr_flags.key_directory &&
+ (entry.fs_mgr_flags.file_encryption || entry.fs_mgr_flags.force_fde_or_fbe);
}
// Check to see if a mountable volume has encryption requirements
-static int handle_encryptable(const struct fstab_rec* rec)
-{
- /* If this is block encryptable, need to trigger encryption */
- if (needs_block_encryption(rec)) {
- if (umount(rec->mount_point) == 0) {
+static int handle_encryptable(const FstabEntry& entry) {
+ // If this is block encryptable, need to trigger encryption.
+ if (needs_block_encryption(entry)) {
+ if (umount(entry.mount_point.c_str()) == 0) {
return FS_MGR_MNTALL_DEV_NEEDS_ENCRYPTION;
} else {
- PWARNING << "Could not umount " << rec->mount_point
- << " - allow continue unencrypted";
+ PWARNING << "Could not umount " << entry.mount_point << " - allow continue unencrypted";
return FS_MGR_MNTALL_DEV_NOT_ENCRYPTED;
}
- } else if (should_use_metadata_encryption(rec)) {
- if (umount(rec->mount_point) == 0) {
+ } else if (should_use_metadata_encryption(entry)) {
+ if (umount(entry.mount_point.c_str()) == 0) {
return FS_MGR_MNTALL_DEV_NEEDS_METADATA_ENCRYPTION;
} else {
- PERROR << "Could not umount " << rec->mount_point << " - fail since can't encrypt";
+ PERROR << "Could not umount " << entry.mount_point << " - fail since can't encrypt";
return FS_MGR_MNTALL_FAIL;
}
- } else if (rec->fs_mgr_flags & (MF_FILEENCRYPTION | MF_FORCEFDEORFBE)) {
- LINFO << rec->mount_point << " is file encrypted";
+ } else if (entry.fs_mgr_flags.file_encryption || entry.fs_mgr_flags.force_fde_or_fbe) {
+ LINFO << entry.mount_point << " is file encrypted";
return FS_MGR_MNTALL_DEV_FILE_ENCRYPTED;
- } else if (fs_mgr_is_encryptable(rec)) {
+ } else if (entry.is_encryptable()) {
return FS_MGR_MNTALL_DEV_NOT_ENCRYPTED;
} else {
return FS_MGR_MNTALL_DEV_NOT_ENCRYPTABLE;
@@ -832,21 +820,34 @@
return true;
}
-bool fs_mgr_update_logical_partition(struct fstab_rec* rec) {
+bool fs_mgr_update_logical_partition(FstabEntry* entry) {
// Logical partitions are specified with a named partition rather than a
// block device, so if the block device is a path, then it has already
// been updated.
- if (rec->blk_device[0] == '/') {
+ if (entry->blk_device[0] == '/') {
return true;
}
DeviceMapper& dm = DeviceMapper::Instance();
std::string device_name;
- if (!dm.GetDmDevicePathByName(rec->blk_device, &device_name)) {
+ if (!dm.GetDmDevicePathByName(entry->blk_device, &device_name)) {
return false;
}
+
+ entry->blk_device = device_name;
+ return true;
+}
+
+bool fs_mgr_update_logical_partition(struct fstab_rec* rec) {
+ auto entry = FstabRecToFstabEntry(rec);
+
+ if (!fs_mgr_update_logical_partition(&entry)) {
+ return false;
+ }
+
free(rec->blk_device);
- rec->blk_device = strdup(device_name.c_str());
+ rec->blk_device = strdup(entry.blk_device.c_str());
+
return true;
}
@@ -854,13 +855,13 @@
public:
CheckpointManager(int needs_checkpoint = -1) : needs_checkpoint_(needs_checkpoint) {}
- bool Update(struct fstab_rec* rec) {
- if (!fs_mgr_is_checkpoint(rec)) {
+ bool Update(FstabEntry* entry) {
+ if (!entry->fs_mgr_flags.checkpoint_blk && !entry->fs_mgr_flags.checkpoint_fs) {
return true;
}
- if (fs_mgr_is_checkpoint_blk(rec)) {
- call_vdc({"checkpoint", "restoreCheckpoint", rec->blk_device});
+ if (entry->fs_mgr_flags.checkpoint_blk) {
+ call_vdc({"checkpoint", "restoreCheckpoint", entry->blk_device});
}
if (needs_checkpoint_ == UNKNOWN &&
@@ -873,7 +874,7 @@
return true;
}
- if (!UpdateCheckpointPartition(rec)) {
+ if (!UpdateCheckpointPartition(entry)) {
LERROR << "Could not set up checkpoint partition, skipping!";
return false;
}
@@ -881,18 +882,17 @@
return true;
}
- bool Revert(struct fstab_rec* rec) {
- if (!fs_mgr_is_checkpoint(rec)) {
+ bool Revert(FstabEntry* entry) {
+ if (!entry->fs_mgr_flags.checkpoint_blk && !entry->fs_mgr_flags.checkpoint_fs) {
return true;
}
- if (device_map_.find(rec->blk_device) == device_map_.end()) {
+ if (device_map_.find(entry->blk_device) == device_map_.end()) {
return true;
}
- std::string bow_device = rec->blk_device;
- free(rec->blk_device);
- rec->blk_device = strdup(device_map_[bow_device].c_str());
+ std::string bow_device = entry->blk_device;
+ entry->blk_device = device_map_[bow_device];
device_map_.erase(bow_device);
DeviceMapper& dm = DeviceMapper::Instance();
@@ -904,22 +904,17 @@
}
private:
- bool UpdateCheckpointPartition(struct fstab_rec* rec) {
- if (fs_mgr_is_checkpoint_fs(rec)) {
- if (!strcmp(rec->fs_type, "f2fs")) {
- std::string opts(rec->fs_options);
-
- opts += ",checkpoint=disable";
- free(rec->fs_options);
- rec->fs_options = strdup(opts.c_str());
+ bool UpdateCheckpointPartition(FstabEntry* entry) {
+ if (entry->fs_mgr_flags.checkpoint_fs) {
+ if (is_f2fs(entry->fs_type)) {
+ entry->fs_options += ",checkpoint=disable";
} else {
- LERROR << rec->fs_type << " does not implement checkpoints.";
+ LERROR << entry->fs_type << " does not implement checkpoints.";
}
- } else if (fs_mgr_is_checkpoint_blk(rec)) {
- android::base::unique_fd fd(
- TEMP_FAILURE_RETRY(open(rec->blk_device, O_RDONLY | O_CLOEXEC)));
- if (!fd) {
- PERROR << "Cannot open device " << rec->blk_device;
+ } else if (entry->fs_mgr_flags.checkpoint_blk) {
+ unique_fd fd(TEMP_FAILURE_RETRY(open(entry->blk_device.c_str(), O_RDONLY | O_CLOEXEC)));
+ if (fd < 0) {
+ PERROR << "Cannot open device " << entry->blk_device;
return false;
}
@@ -931,7 +926,7 @@
android::dm::DmTable table;
if (!table.AddTarget(
- std::make_unique<android::dm::DmTargetBow>(0, size, rec->blk_device))) {
+ std::make_unique<android::dm::DmTargetBow>(0, size, entry->blk_device))) {
LERROR << "Failed to add bow target";
return false;
}
@@ -948,9 +943,8 @@
return false;
}
- device_map_[name] = rec->blk_device;
- free(rec->blk_device);
- rec->blk_device = strdup(name.c_str());
+ device_map_[name] = entry->blk_device;
+ entry->blk_device = name;
}
return true;
}
@@ -960,92 +954,86 @@
std::map<std::string, std::string> device_map_;
};
-/* When multiple fstab records share the same mount_point, it will
- * try to mount each one in turn, and ignore any duplicates after a
- * first successful mount.
- * Returns -1 on error, and FS_MGR_MNTALL_* otherwise.
- */
-int fs_mgr_mount_all(fstab* fstab, int mount_mode) {
- int i = 0;
+// When multiple fstab records share the same mount_point, it will try to mount each
+// one in turn, and ignore any duplicates after a first successful mount.
+// Returns -1 on error, and FS_MGR_MNTALL_* otherwise.
+int fs_mgr_mount_all(Fstab* fstab, int mount_mode) {
int encryptable = FS_MGR_MNTALL_DEV_NOT_ENCRYPTABLE;
int error_count = 0;
- int mret = -1;
- int mount_errno = 0;
- int attempted_idx = -1;
CheckpointManager checkpoint_manager;
- FsManagerAvbUniquePtr avb_handle(nullptr);
+ AvbUniquePtr avb_handle(nullptr);
- if (!fstab) {
+ if (fstab->empty()) {
return FS_MGR_MNTALL_FAIL;
}
- for (i = 0; i < fstab->num_entries; i++) {
- /* Don't mount entries that are managed by vold or not for the mount mode*/
- if ((fstab->recs[i].fs_mgr_flags & (MF_VOLDMANAGED | MF_RECOVERYONLY)) ||
- ((mount_mode == MOUNT_MODE_LATE) && !fs_mgr_is_latemount(&fstab->recs[i])) ||
- ((mount_mode == MOUNT_MODE_EARLY) && fs_mgr_is_latemount(&fstab->recs[i]))) {
+ for (size_t i = 0; i < fstab->size(); i++) {
+ auto& current_entry = (*fstab)[i];
+
+ // Don't mount entries that are managed by vold or not for the mount mode.
+ if (current_entry.fs_mgr_flags.vold_managed || current_entry.fs_mgr_flags.recovery_only ||
+ current_entry.fs_mgr_flags.first_stage_mount ||
+ ((mount_mode == MOUNT_MODE_LATE) && !current_entry.fs_mgr_flags.late_mount) ||
+ ((mount_mode == MOUNT_MODE_EARLY) && current_entry.fs_mgr_flags.late_mount)) {
continue;
}
- /* Skip swap and raw partition entries such as boot, recovery, etc */
- if (!strcmp(fstab->recs[i].fs_type, "swap") ||
- !strcmp(fstab->recs[i].fs_type, "emmc") ||
- !strcmp(fstab->recs[i].fs_type, "mtd")) {
+ // Skip swap and raw partition entries such as boot, recovery, etc.
+ if (current_entry.fs_type == "swap" || current_entry.fs_type == "emmc" ||
+ current_entry.fs_type == "mtd") {
continue;
}
- /* Skip mounting the root partition, as it will already have been mounted */
- if (!strcmp(fstab->recs[i].mount_point, "/") ||
- !strcmp(fstab->recs[i].mount_point, "/system")) {
- if ((fstab->recs[i].fs_mgr_flags & MS_RDONLY) != 0) {
- fs_mgr_set_blk_ro(fstab->recs[i].blk_device);
+ // Skip mounting the root partition, as it will already have been mounted.
+ if (current_entry.mount_point == "/" || current_entry.mount_point == "/system") {
+ if ((current_entry.flags & MS_RDONLY) != 0) {
+ fs_mgr_set_blk_ro(current_entry.blk_device);
}
continue;
}
- /* Translate LABEL= file system labels into block devices */
- if (is_extfs(fstab->recs[i].fs_type)) {
- int tret = translate_ext_labels(&fstab->recs[i]);
- if (tret < 0) {
+ // Translate LABEL= file system labels into block devices.
+ if (is_extfs(current_entry.fs_type)) {
+ if (!TranslateExtLabels(¤t_entry)) {
LERROR << "Could not translate label to block device";
continue;
}
}
- if ((fstab->recs[i].fs_mgr_flags & MF_LOGICAL)) {
- if (!fs_mgr_update_logical_partition(&fstab->recs[i])) {
+ if (current_entry.fs_mgr_flags.logical) {
+ if (!fs_mgr_update_logical_partition(¤t_entry)) {
LERROR << "Could not set up logical partition, skipping!";
continue;
}
}
- if (!checkpoint_manager.Update(&fstab->recs[i])) {
+ if (!checkpoint_manager.Update(¤t_entry)) {
continue;
}
- if (fstab->recs[i].fs_mgr_flags & MF_WAIT &&
- !fs_mgr_wait_for_file(fstab->recs[i].blk_device, 20s)) {
- LERROR << "Skipping '" << fstab->recs[i].blk_device << "' during mount_all";
+ if (current_entry.fs_mgr_flags.wait &&
+ !fs_mgr_wait_for_file(current_entry.blk_device, 20s)) {
+ LERROR << "Skipping '" << current_entry.blk_device << "' during mount_all";
continue;
}
- if (fstab->recs[i].fs_mgr_flags & MF_AVB) {
+ if (current_entry.fs_mgr_flags.avb) {
if (!avb_handle) {
- avb_handle = FsManagerAvbHandle::Open();
+ avb_handle = AvbHandle::Open();
if (!avb_handle) {
- LERROR << "Failed to open FsManagerAvbHandle";
+ LERROR << "Failed to open AvbHandle";
return FS_MGR_MNTALL_FAIL;
}
}
- if (avb_handle->SetUpAvbHashtree(&fstab->recs[i], true /* wait_for_verity_dev */) ==
- SetUpAvbHashtreeResult::kFail) {
- LERROR << "Failed to set up AVB on partition: "
- << fstab->recs[i].mount_point << ", skipping!";
- /* Skips mounting the device. */
+ if (avb_handle->SetUpAvbHashtree(¤t_entry, true /* wait_for_verity_dev */) ==
+ AvbHashtreeResult::kFail) {
+ LERROR << "Failed to set up AVB on partition: " << current_entry.mount_point
+ << ", skipping!";
+ // Skips mounting the device.
continue;
}
- } else if ((fstab->recs[i].fs_mgr_flags & MF_VERIFY)) {
- int rc = fs_mgr_setup_verity(&fstab->recs[i], true);
+ } else if ((current_entry.fs_mgr_flags.verify)) {
+ int rc = fs_mgr_setup_verity(¤t_entry, true);
if (__android_log_is_debuggable() &&
(rc == FS_MGR_SETUP_VERITY_DISABLED ||
rc == FS_MGR_SETUP_VERITY_SKIPPED)) {
@@ -1058,17 +1046,19 @@
int last_idx_inspected;
int top_idx = i;
+ int attempted_idx = -1;
- mret = mount_with_alternatives(fstab, i, &last_idx_inspected, &attempted_idx);
+ bool mret = mount_with_alternatives(*fstab, i, &last_idx_inspected, &attempted_idx);
+ auto& attempted_entry = (*fstab)[attempted_idx];
i = last_idx_inspected;
- mount_errno = errno;
+ int mount_errno = errno;
- /* Deal with encryptability. */
- if (!mret) {
- int status = handle_encryptable(&fstab->recs[attempted_idx]);
+ // Handle success and deal with encryptability.
+ if (mret) {
+ int status = handle_encryptable(attempted_entry);
if (status == FS_MGR_MNTALL_FAIL) {
- /* Fatal error - no point continuing */
+ // Fatal error - no point continuing.
return status;
}
@@ -1079,51 +1069,45 @@
}
encryptable = status;
if (status == FS_MGR_MNTALL_DEV_NEEDS_METADATA_ENCRYPTION) {
- if (!call_vdc(
- {"cryptfs", "encryptFstab", fstab->recs[attempted_idx].mount_point})) {
+ if (!call_vdc({"cryptfs", "encryptFstab", attempted_entry.mount_point})) {
LERROR << "Encryption failed";
return FS_MGR_MNTALL_FAIL;
}
}
}
- /* Success! Go get the next one */
+ // Success! Go get the next one.
continue;
}
- bool wiped = partition_wiped(fstab->recs[top_idx].blk_device);
+ // Mounting failed, understand why and retry.
+ bool wiped = partition_wiped(current_entry.blk_device.c_str());
bool crypt_footer = false;
- if (mret && mount_errno != EBUSY && mount_errno != EACCES &&
- fs_mgr_is_formattable(&fstab->recs[top_idx]) && wiped) {
- /* top_idx and attempted_idx point at the same partition, but sometimes
- * at two different lines in the fstab. Use the top one for formatting
- * as that is the preferred one.
- */
- LERROR << __FUNCTION__ << "(): " << fstab->recs[top_idx].blk_device
- << " is wiped and " << fstab->recs[top_idx].mount_point
- << " " << fstab->recs[top_idx].fs_type
+ if (mount_errno != EBUSY && mount_errno != EACCES &&
+ current_entry.fs_mgr_flags.formattable && wiped) {
+ // current_entry and attempted_entry point at the same partition, but sometimes
+ // at two different lines in the fstab. Use current_entry for formatting
+ // as that is the preferred one.
+ LERROR << __FUNCTION__ << "(): " << realpath(current_entry.blk_device)
+ << " is wiped and " << current_entry.mount_point << " " << current_entry.fs_type
<< " is formattable. Format it.";
- checkpoint_manager.Revert(&fstab->recs[top_idx]);
+ checkpoint_manager.Revert(¤t_entry);
- if (fs_mgr_is_encryptable(&fstab->recs[top_idx]) &&
- strcmp(fstab->recs[top_idx].key_loc, KEY_IN_FOOTER)) {
- int fd = open(fstab->recs[top_idx].key_loc, O_WRONLY);
+ if (current_entry.is_encryptable() && current_entry.key_loc != KEY_IN_FOOTER) {
+ unique_fd fd(TEMP_FAILURE_RETRY(
+ open(current_entry.key_loc.c_str(), O_WRONLY | O_CLOEXEC)));
if (fd >= 0) {
- LINFO << __FUNCTION__ << "(): also wipe "
- << fstab->recs[top_idx].key_loc;
+ LINFO << __FUNCTION__ << "(): also wipe " << current_entry.key_loc;
wipe_block_device(fd, get_file_size(fd));
- close(fd);
} else {
- PERROR << __FUNCTION__ << "(): "
- << fstab->recs[top_idx].key_loc << " wouldn't open";
+ PERROR << __FUNCTION__ << "(): " << current_entry.key_loc << " wouldn't open";
}
- } else if (fs_mgr_is_encryptable(&fstab->recs[top_idx]) &&
- !strcmp(fstab->recs[top_idx].key_loc, KEY_IN_FOOTER)) {
+ } else if (current_entry.is_encryptable() && current_entry.key_loc == KEY_IN_FOOTER) {
crypt_footer = true;
}
- if (fs_mgr_do_format(&fstab->recs[top_idx], crypt_footer) == 0) {
- /* Let's replay the mount actions. */
+ if (fs_mgr_do_format(current_entry, crypt_footer) == 0) {
+ // Let's replay the mount actions.
i = top_idx - 1;
continue;
} else {
@@ -1134,35 +1118,29 @@
}
}
- /* mount(2) returned an error, handle the encryptable/formattable case */
- if (mret && mount_errno != EBUSY && mount_errno != EACCES &&
- fs_mgr_is_encryptable(&fstab->recs[attempted_idx])) {
+ // mount(2) returned an error, handle the encryptable/formattable case.
+ if (mount_errno != EBUSY && mount_errno != EACCES && attempted_entry.is_encryptable()) {
if (wiped) {
- LERROR << __FUNCTION__ << "(): "
- << fstab->recs[attempted_idx].blk_device
- << " is wiped and "
- << fstab->recs[attempted_idx].mount_point << " "
- << fstab->recs[attempted_idx].fs_type
+ LERROR << __FUNCTION__ << "(): " << attempted_entry.blk_device << " is wiped and "
+ << attempted_entry.mount_point << " " << attempted_entry.fs_type
<< " is encryptable. Suggest recovery...";
encryptable = FS_MGR_MNTALL_DEV_NEEDS_RECOVERY;
continue;
} else {
- /* Need to mount a tmpfs at this mountpoint for now, and set
- * properties that vold will query later for decrypting
- */
+ // Need to mount a tmpfs at this mountpoint for now, and set
+ // properties that vold will query later for decrypting
LERROR << __FUNCTION__ << "(): possibly an encryptable blkdev "
- << fstab->recs[attempted_idx].blk_device
- << " for mount " << fstab->recs[attempted_idx].mount_point
- << " type " << fstab->recs[attempted_idx].fs_type;
- if (fs_mgr_do_tmpfs_mount(fstab->recs[attempted_idx].mount_point) < 0) {
+ << attempted_entry.blk_device << " for mount " << attempted_entry.mount_point
+ << " type " << attempted_entry.fs_type;
+ if (fs_mgr_do_tmpfs_mount(attempted_entry.mount_point.c_str()) < 0) {
++error_count;
continue;
}
}
encryptable = FS_MGR_MNTALL_DEV_MIGHT_BE_ENCRYPTED;
- } else if (mret && mount_errno != EBUSY && mount_errno != EACCES &&
- should_use_metadata_encryption(&fstab->recs[attempted_idx])) {
- if (!call_vdc({"cryptfs", "mountFstab", fstab->recs[attempted_idx].mount_point})) {
+ } else if (mount_errno != EBUSY && mount_errno != EACCES &&
+ should_use_metadata_encryption(attempted_entry)) {
+ if (!call_vdc({"cryptfs", "mountFstab", attempted_entry.mount_point})) {
++error_count;
}
encryptable = FS_MGR_MNTALL_DEV_IS_METADATA_ENCRYPTED;
@@ -1170,18 +1148,18 @@
} else {
// fs_options might be null so we cannot use PERROR << directly.
// Use StringPrintf to output "(null)" instead.
- if (fs_mgr_is_nofail(&fstab->recs[attempted_idx])) {
+ if (attempted_entry.fs_mgr_flags.no_fail) {
PERROR << android::base::StringPrintf(
- "Ignoring failure to mount an un-encryptable or wiped "
- "partition on %s at %s options: %s",
- fstab->recs[attempted_idx].blk_device, fstab->recs[attempted_idx].mount_point,
- fstab->recs[attempted_idx].fs_options);
+ "Ignoring failure to mount an un-encryptable or wiped "
+ "partition on %s at %s options: %s",
+ attempted_entry.blk_device.c_str(), attempted_entry.mount_point.c_str(),
+ attempted_entry.fs_options.c_str());
} else {
PERROR << android::base::StringPrintf(
- "Failed to mount an un-encryptable or wiped partition "
- "on %s at %s options: %s",
- fstab->recs[attempted_idx].blk_device, fstab->recs[attempted_idx].mount_point,
- fstab->recs[attempted_idx].fs_options);
+ "Failed to mount an un-encryptable or wiped partition "
+ "on %s at %s options: %s",
+ attempted_entry.blk_device.c_str(), attempted_entry.mount_point.c_str(),
+ attempted_entry.fs_options.c_str());
++error_count;
}
continue;
@@ -1199,20 +1177,13 @@
}
}
-/* wrapper to __mount() and expects a fully prepared fstab_rec,
- * unlike fs_mgr_do_mount which does more things with avb / verity
- * etc.
- */
-int fs_mgr_do_mount_one(struct fstab_rec *rec)
-{
- if (!rec) {
- return FS_MGR_DOMNT_FAILED;
- }
-
+// wrapper to __mount() and expects a fully prepared fstab_rec,
+// unlike fs_mgr_do_mount which does more things with avb / verity etc.
+int fs_mgr_do_mount_one(const FstabEntry& entry) {
// Run fsck if needed
- prepare_fs_for_mount(rec->blk_device, rec);
+ prepare_fs_for_mount(entry.blk_device, entry);
- int ret = __mount(rec->blk_device, rec->mount_point, rec);
+ int ret = __mount(entry.blk_device, entry.mount_point, entry);
if (ret) {
ret = (errno == EBUSY) ? FS_MGR_DOMNT_BUSY : FS_MGR_DOMNT_FAILED;
}
@@ -1220,76 +1191,84 @@
return ret;
}
-/* If tmp_mount_point is non-null, mount the filesystem there. This is for the
- * tmp mount we do to check the user password
- * If multiple fstab entries are to be mounted on "n_name", it will try to mount each one
- * in turn, and stop on 1st success, or no more match.
- */
-static int fs_mgr_do_mount_helper(fstab* fstab, const char* n_name, char* n_blk_device,
- char* tmp_mount_point, int needs_checkpoint) {
- int i = 0;
+int fs_mgr_do_mount_one(struct fstab_rec* rec) {
+ if (!rec) {
+ return FS_MGR_DOMNT_FAILED;
+ }
+
+ auto entry = FstabRecToFstabEntry(rec);
+
+ return fs_mgr_do_mount_one(entry);
+}
+
+// If tmp_mount_point is non-null, mount the filesystem there. This is for the
+// tmp mount we do to check the user password
+// If multiple fstab entries are to be mounted on "n_name", it will try to mount each one
+// in turn, and stop on 1st success, or no more match.
+static int fs_mgr_do_mount_helper(Fstab* fstab, const std::string& n_name,
+ const std::string& n_blk_device, const char* tmp_mount_point,
+ int needs_checkpoint) {
int mount_errors = 0;
int first_mount_errno = 0;
- char* mount_point;
+ std::string mount_point;
CheckpointManager checkpoint_manager(needs_checkpoint);
- FsManagerAvbUniquePtr avb_handle(nullptr);
+ AvbUniquePtr avb_handle(nullptr);
if (!fstab) {
return FS_MGR_DOMNT_FAILED;
}
- for (i = 0; i < fstab->num_entries; i++) {
- if (!fs_match(fstab->recs[i].mount_point, n_name)) {
+ for (auto& fstab_entry : *fstab) {
+ if (!fs_match(fstab_entry.mount_point, n_name)) {
continue;
}
- /* We found our match */
- /* If this swap or a raw partition, report an error */
- if (!strcmp(fstab->recs[i].fs_type, "swap") ||
- !strcmp(fstab->recs[i].fs_type, "emmc") ||
- !strcmp(fstab->recs[i].fs_type, "mtd")) {
- LERROR << "Cannot mount filesystem of type "
- << fstab->recs[i].fs_type << " on " << n_blk_device;
+ // We found our match.
+ // If this swap or a raw partition, report an error.
+ if (fstab_entry.fs_type == "swap" || fstab_entry.fs_type == "emmc" ||
+ fstab_entry.fs_type == "mtd") {
+ LERROR << "Cannot mount filesystem of type " << fstab_entry.fs_type << " on "
+ << n_blk_device;
return FS_MGR_DOMNT_FAILED;
}
- if ((fstab->recs[i].fs_mgr_flags & MF_LOGICAL)) {
- if (!fs_mgr_update_logical_partition(&fstab->recs[i])) {
+ if (fstab_entry.fs_mgr_flags.logical) {
+ if (!fs_mgr_update_logical_partition(&fstab_entry)) {
LERROR << "Could not set up logical partition, skipping!";
continue;
}
}
- if (!checkpoint_manager.Update(&fstab->recs[i])) {
+ if (!checkpoint_manager.Update(&fstab_entry)) {
LERROR << "Could not set up checkpoint partition, skipping!";
continue;
}
- /* First check the filesystem if requested */
- if (fstab->recs[i].fs_mgr_flags & MF_WAIT && !fs_mgr_wait_for_file(n_blk_device, 20s)) {
+ // First check the filesystem if requested.
+ if (fstab_entry.fs_mgr_flags.wait && !fs_mgr_wait_for_file(n_blk_device, 20s)) {
LERROR << "Skipping mounting '" << n_blk_device << "'";
continue;
}
- int fs_stat = prepare_fs_for_mount(n_blk_device, &fstab->recs[i]);
+ int fs_stat = prepare_fs_for_mount(n_blk_device, fstab_entry);
- if (fstab->recs[i].fs_mgr_flags & MF_AVB) {
+ if (fstab_entry.fs_mgr_flags.avb) {
if (!avb_handle) {
- avb_handle = FsManagerAvbHandle::Open();
+ avb_handle = AvbHandle::Open();
if (!avb_handle) {
- LERROR << "Failed to open FsManagerAvbHandle";
+ LERROR << "Failed to open AvbHandle";
return FS_MGR_DOMNT_FAILED;
}
}
- if (avb_handle->SetUpAvbHashtree(&fstab->recs[i], true /* wait_for_verity_dev */) ==
- SetUpAvbHashtreeResult::kFail) {
- LERROR << "Failed to set up AVB on partition: "
- << fstab->recs[i].mount_point << ", skipping!";
- /* Skips mounting the device. */
+ if (avb_handle->SetUpAvbHashtree(&fstab_entry, true /* wait_for_verity_dev */) ==
+ AvbHashtreeResult::kFail) {
+ LERROR << "Failed to set up AVB on partition: " << fstab_entry.mount_point
+ << ", skipping!";
+ // Skips mounting the device.
continue;
}
- } else if ((fstab->recs[i].fs_mgr_flags & MF_VERIFY)) {
- int rc = fs_mgr_setup_verity(&fstab->recs[i], true);
+ } else if (fstab_entry.fs_mgr_flags.verify) {
+ int rc = fs_mgr_setup_verity(&fstab_entry, true);
if (__android_log_is_debuggable() &&
(rc == FS_MGR_SETUP_VERITY_DISABLED ||
rc == FS_MGR_SETUP_VERITY_SKIPPED)) {
@@ -1300,15 +1279,15 @@
}
}
- /* Now mount it where requested */
+ // Now mount it where requested */
if (tmp_mount_point) {
mount_point = tmp_mount_point;
} else {
- mount_point = fstab->recs[i].mount_point;
+ mount_point = fstab_entry.mount_point;
}
int retry_count = 2;
while (retry_count-- > 0) {
- if (!__mount(n_blk_device, mount_point, &fstab->recs[i])) {
+ if (!__mount(n_blk_device, mount_point, fstab_entry)) {
fs_stat &= ~FS_STAT_FULL_MOUNT_FAILED;
return FS_MGR_DOMNT_SUCCESS;
} else {
@@ -1317,10 +1296,10 @@
mount_errors++;
fs_stat |= FS_STAT_FULL_MOUNT_FAILED;
// try again after fsck
- check_fs(n_blk_device, fstab->recs[i].fs_type, fstab->recs[i].mount_point, &fs_stat);
+ check_fs(n_blk_device, fstab_entry.fs_type, fstab_entry.mount_point, &fs_stat);
}
}
- log_fs_stat(fstab->recs[i].blk_device, fs_stat);
+ log_fs_stat(fstab_entry.blk_device, fs_stat);
}
// Reach here means the mount attempt fails.
@@ -1328,19 +1307,22 @@
PERROR << "Cannot mount filesystem on " << n_blk_device << " at " << mount_point;
if (first_mount_errno == EBUSY) return FS_MGR_DOMNT_BUSY;
} else {
- /* We didn't find a match, say so and return an error */
+ // We didn't find a match, say so and return an error.
LERROR << "Cannot find mount point " << n_name << " in fstab";
}
return FS_MGR_DOMNT_FAILED;
}
int fs_mgr_do_mount(fstab* fstab, const char* n_name, char* n_blk_device, char* tmp_mount_point) {
- return fs_mgr_do_mount_helper(fstab, n_name, n_blk_device, tmp_mount_point, -1);
+ auto new_fstab = LegacyFstabToFstab(fstab);
+ return fs_mgr_do_mount_helper(&new_fstab, n_name, n_blk_device, tmp_mount_point, -1);
}
int fs_mgr_do_mount(fstab* fstab, const char* n_name, char* n_blk_device, char* tmp_mount_point,
bool needs_checkpoint) {
- return fs_mgr_do_mount_helper(fstab, n_name, n_blk_device, tmp_mount_point, needs_checkpoint);
+ auto new_fstab = LegacyFstabToFstab(fstab);
+ return fs_mgr_do_mount_helper(&new_fstab, n_name, n_blk_device, tmp_mount_point,
+ needs_checkpoint);
}
/*
@@ -1362,89 +1344,74 @@
return 0;
}
-/* This must be called after mount_all, because the mkswap command needs to be
- * available.
- */
-int fs_mgr_swapon_all(fstab* fstab) {
- int i = 0;
- int flags = 0;
- int err = 0;
- int ret = 0;
- int status;
- const char *mkswap_argv[2] = {
- MKSWAP_BIN,
- nullptr
- };
-
- if (!fstab) {
- return -1;
- }
-
- for (i = 0; i < fstab->num_entries; i++) {
- /* Skip non-swap entries */
- if (strcmp(fstab->recs[i].fs_type, "swap")) {
+bool fs_mgr_swapon_all(const Fstab& fstab) {
+ bool ret = true;
+ for (const auto& entry : fstab) {
+ // Skip non-swap entries.
+ if (entry.fs_type != "swap") {
continue;
}
- if (fstab->recs[i].zram_size > 0) {
- /* A zram_size was specified, so we need to configure the
- * device. There is no point in having multiple zram devices
- * on a system (all the memory comes from the same pool) so
- * we can assume the device number is 0.
- */
- if (fstab->recs[i].max_comp_streams >= 0) {
+ if (entry.zram_size > 0) {
+ // A zram_size was specified, so we need to configure the
+ // device. There is no point in having multiple zram devices
+ // on a system (all the memory comes from the same pool) so
+ // we can assume the device number is 0.
+ if (entry.max_comp_streams >= 0) {
auto zram_mcs_fp = std::unique_ptr<FILE, decltype(&fclose)>{
fopen(ZRAM_CONF_MCS, "re"), fclose};
- if (zram_mcs_fp == NULL) {
+ if (zram_mcs_fp == nullptr) {
LERROR << "Unable to open zram conf comp device " << ZRAM_CONF_MCS;
- ret = -1;
+ ret = false;
continue;
}
- fprintf(zram_mcs_fp.get(), "%d\n", fstab->recs[i].max_comp_streams);
+ fprintf(zram_mcs_fp.get(), "%d\n", entry.max_comp_streams);
}
auto zram_fp =
std::unique_ptr<FILE, decltype(&fclose)>{fopen(ZRAM_CONF_DEV, "re+"), fclose};
- if (zram_fp == NULL) {
+ if (zram_fp == nullptr) {
LERROR << "Unable to open zram conf device " << ZRAM_CONF_DEV;
- ret = -1;
+ ret = false;
continue;
}
- fprintf(zram_fp.get(), "%u\n", fstab->recs[i].zram_size);
+ fprintf(zram_fp.get(), "%" PRId64 "\n", entry.zram_size);
}
- if (fstab->recs[i].fs_mgr_flags & MF_WAIT &&
- !fs_mgr_wait_for_file(fstab->recs[i].blk_device, 20s)) {
- LERROR << "Skipping mkswap for '" << fstab->recs[i].blk_device << "'";
- ret = -1;
+ if (entry.fs_mgr_flags.wait && !fs_mgr_wait_for_file(entry.blk_device, 20s)) {
+ LERROR << "Skipping mkswap for '" << entry.blk_device << "'";
+ ret = false;
continue;
}
- /* Initialize the swap area */
- mkswap_argv[1] = fstab->recs[i].blk_device;
- err = android_fork_execvp_ext(ARRAY_SIZE(mkswap_argv),
- const_cast<char **>(mkswap_argv),
- &status, true, LOG_KLOG, false, NULL,
- NULL, 0);
+ // Initialize the swap area.
+ const char* mkswap_argv[2] = {
+ MKSWAP_BIN,
+ entry.blk_device.c_str(),
+ };
+ int err = 0;
+ int status;
+ err = android_fork_execvp_ext(ARRAY_SIZE(mkswap_argv), const_cast<char**>(mkswap_argv),
+ &status, true, LOG_KLOG, false, nullptr, nullptr, 0);
if (err) {
- LERROR << "mkswap failed for " << fstab->recs[i].blk_device;
- ret = -1;
+ LERROR << "mkswap failed for " << entry.blk_device;
+ ret = false;
continue;
}
/* If -1, then no priority was specified in fstab, so don't set
* SWAP_FLAG_PREFER or encode the priority */
- if (fstab->recs[i].swap_prio >= 0) {
- flags = (fstab->recs[i].swap_prio << SWAP_FLAG_PRIO_SHIFT) &
- SWAP_FLAG_PRIO_MASK;
+ int flags = 0;
+ if (entry.swap_prio >= 0) {
+ flags = (entry.swap_prio << SWAP_FLAG_PRIO_SHIFT) & SWAP_FLAG_PRIO_MASK;
flags |= SWAP_FLAG_PREFER;
} else {
flags = 0;
}
- err = swapon(fstab->recs[i].blk_device, flags);
+ err = swapon(entry.blk_device.c_str(), flags);
if (err) {
- LERROR << "swapon failed for " << fstab->recs[i].blk_device;
- ret = -1;
+ LERROR << "swapon failed for " << entry.blk_device;
+ ret = false;
}
}
@@ -1498,23 +1465,22 @@
* logging mode, in which case return that */
*mode = VERITY_MODE_DEFAULT;
- std::unique_ptr<fstab, decltype(&fs_mgr_free_fstab)> fstab(fs_mgr_read_fstab_default(),
- fs_mgr_free_fstab);
- if (!fstab) {
+ Fstab fstab;
+ if (!ReadDefaultFstab(&fstab)) {
LERROR << "Failed to read default fstab";
return false;
}
- for (int i = 0; i < fstab->num_entries; i++) {
- if (fs_mgr_is_avb(&fstab->recs[i])) {
+ for (const auto& entry : fstab) {
+ if (entry.fs_mgr_flags.avb) {
*mode = VERITY_MODE_RESTART; // avb only supports restart mode.
break;
- } else if (!fs_mgr_is_verified(&fstab->recs[i])) {
+ } else if (!entry.fs_mgr_flags.verify) {
continue;
}
int current;
- if (load_verity_state(&fstab->recs[i], ¤t) < 0) {
+ if (load_verity_state(entry, ¤t) < 0) {
continue;
}
if (current != VERITY_MODE_DEFAULT) {
@@ -1526,7 +1492,8 @@
return true;
}
-bool fs_mgr_update_verity_state(std::function<fs_mgr_verity_state_callback> callback) {
+bool fs_mgr_update_verity_state(
+ std::function<void(const std::string& mount_point, int mode)> callback) {
if (!callback) {
return false;
}
@@ -1536,27 +1503,25 @@
return false;
}
- std::unique_ptr<fstab, decltype(&fs_mgr_free_fstab)> fstab(fs_mgr_read_fstab_default(),
- fs_mgr_free_fstab);
- if (!fstab) {
+ Fstab fstab;
+ if (!ReadDefaultFstab(&fstab)) {
LERROR << "Failed to read default fstab";
return false;
}
DeviceMapper& dm = DeviceMapper::Instance();
- for (int i = 0; i < fstab->num_entries; i++) {
- auto fsrec = &fstab->recs[i];
- if (!fs_mgr_is_verified(fsrec) && !fs_mgr_is_avb(fsrec)) {
+ for (const auto& entry : fstab) {
+ if (!entry.fs_mgr_flags.verify && !entry.fs_mgr_flags.avb) {
continue;
}
std::string mount_point;
- if (!strcmp(fsrec->mount_point, "/")) {
+ if (entry.mount_point == "/") {
// In AVB, the dm device name is vroot instead of system.
- mount_point = fs_mgr_is_avb(fsrec) ? "vroot" : "system";
+ mount_point = entry.fs_mgr_flags.avb ? "vroot" : "system";
} else {
- mount_point = basename(fsrec->mount_point);
+ mount_point = basename(entry.mount_point.c_str());
}
if (dm.GetState(mount_point) == DmDeviceState::INVALID) {
@@ -1567,7 +1532,7 @@
const char* status;
std::vector<DeviceMapper::TargetInfo> table;
if (!dm.GetTableStatus(mount_point, &table) || table.empty() || table[0].data.empty()) {
- if (!fs_mgr_is_verifyatboot(fsrec)) {
+ if (!entry.fs_mgr_flags.verify_at_boot) {
PERROR << "Failed to query DM_TABLE_STATUS for " << mount_point;
continue;
}
@@ -1581,7 +1546,7 @@
// instead of [partition.vroot.verified].
if (mount_point == "vroot") mount_point = "system";
if (*status == 'C' || *status == 'V') {
- callback(fsrec, mount_point.c_str(), mode, *status);
+ callback(mount_point, mode);
}
}
diff --git a/fs_mgr/fs_mgr_dm_linear.cpp b/fs_mgr/fs_mgr_dm_linear.cpp
index fe0e039..3f075ef 100644
--- a/fs_mgr/fs_mgr_dm_linear.cpp
+++ b/fs_mgr/fs_mgr_dm_linear.cpp
@@ -51,12 +51,20 @@
using DmTargetZero = android::dm::DmTargetZero;
using DmTargetLinear = android::dm::DmTargetLinear;
-bool GetPhysicalPartitionDevicePath(const LpMetadataBlockDevice& block_device,
- std::string* result) {
+static bool GetPhysicalPartitionDevicePath(const LpMetadata& metadata,
+ const LpMetadataBlockDevice& block_device,
+ const std::string& super_device,
+ std::string* result) {
// Note: device-mapper will not accept symlinks, so we must use realpath
// here.
std::string name = GetBlockDevicePartitionName(block_device);
std::string path = "/dev/block/by-name/" + name;
+ // If the super device is the source of this block device's metadata,
+ // make sure we use the correct super device (and not just "super",
+ // which might not exist.)
+ if (GetMetadataSuperBlockDevice(metadata) == &block_device) {
+ path = super_device;
+ }
if (!android::base::Realpath(path, result)) {
PERROR << "realpath: " << path;
return false;
@@ -65,7 +73,7 @@
}
static bool CreateDmTable(const LpMetadata& metadata, const LpMetadataPartition& partition,
- DmTable* table) {
+ const std::string& super_device, DmTable* table) {
uint64_t sector = 0;
for (size_t i = 0; i < partition.num_extents; i++) {
const auto& extent = metadata.extents[partition.first_extent_index + i];
@@ -77,7 +85,7 @@
case LP_TARGET_TYPE_LINEAR: {
const auto& block_device = metadata.block_devices[extent.target_source];
std::string path;
- if (!GetPhysicalPartitionDevicePath(block_device, &path)) {
+ if (!GetPhysicalPartitionDevicePath(metadata, block_device, super_device, &path)) {
LOG(ERROR) << "Unable to complete device-mapper table, unknown block device";
return false;
}
@@ -102,11 +110,11 @@
static bool CreateLogicalPartition(const LpMetadata& metadata, const LpMetadataPartition& partition,
bool force_writable, const std::chrono::milliseconds& timeout_ms,
- std::string* path) {
+ const std::string& super_device, std::string* path) {
DeviceMapper& dm = DeviceMapper::Instance();
DmTable table;
- if (!CreateDmTable(metadata, partition, &table)) {
+ if (!CreateDmTable(metadata, partition, super_device, &table)) {
return false;
}
if (force_writable) {
@@ -137,7 +145,7 @@
LOG(ERROR) << "Could not read partition table.";
return true;
}
- return CreateLogicalPartitions(*metadata.get());
+ return CreateLogicalPartitions(*metadata.get(), block_device);
}
std::unique_ptr<LpMetadata> ReadCurrentMetadata(const std::string& block_device) {
@@ -145,14 +153,14 @@
return ReadMetadata(block_device.c_str(), slot);
}
-bool CreateLogicalPartitions(const LpMetadata& metadata) {
+bool CreateLogicalPartitions(const LpMetadata& metadata, const std::string& super_device) {
for (const auto& partition : metadata.partitions) {
if (!partition.num_extents) {
LINFO << "Skipping zero-length logical partition: " << GetPartitionName(partition);
continue;
}
std::string path;
- if (!CreateLogicalPartition(metadata, partition, false, {}, &path)) {
+ if (!CreateLogicalPartition(metadata, partition, false, {}, super_device, &path)) {
LERROR << "Could not create logical partition: " << GetPartitionName(partition);
return false;
}
@@ -171,7 +179,7 @@
for (const auto& partition : metadata->partitions) {
if (GetPartitionName(partition) == partition_name) {
return CreateLogicalPartition(*metadata.get(), partition, force_writable, timeout_ms,
- path);
+ block_device, path);
}
}
LERROR << "Could not find any partition with name: " << partition_name;
diff --git a/fs_mgr/fs_mgr_format.cpp b/fs_mgr/fs_mgr_format.cpp
index 0983663..1a0e7ab 100644
--- a/fs_mgr/fs_mgr_format.cpp
+++ b/fs_mgr/fs_mgr_format.cpp
@@ -24,6 +24,7 @@
#include <cutils/partition_utils.h>
#include <sys/mount.h>
+#include <android-base/unique_fd.h>
#include <ext4_utils/ext4.h>
#include <ext4_utils/ext4_utils.h>
#include <logwrap/logwrap.h>
@@ -34,30 +35,28 @@
#include "fs_mgr_priv.h"
#include "cryptfs.h"
-static int get_dev_sz(char *fs_blkdev, uint64_t *dev_sz)
-{
- int fd;
+using android::base::unique_fd;
- if ((fd = open(fs_blkdev, O_RDONLY)) < 0) {
+static int get_dev_sz(const std::string& fs_blkdev, uint64_t* dev_sz) {
+ unique_fd fd(TEMP_FAILURE_RETRY(open(fs_blkdev.c_str(), O_RDONLY | O_CLOEXEC)));
+
+ if (fd < 0) {
PERROR << "Cannot open block device";
return -1;
}
if ((ioctl(fd, BLKGETSIZE64, dev_sz)) == -1) {
PERROR << "Cannot get block device size";
- close(fd);
return -1;
}
- close(fd);
return 0;
}
-static int format_ext4(char *fs_blkdev, char *fs_mnt_point, bool crypt_footer)
-{
+static int format_ext4(const std::string& fs_blkdev, const std::string& fs_mnt_point,
+ bool crypt_footer) {
uint64_t dev_sz;
int rc = 0;
- int status;
rc = get_dev_sz(fs_blkdev, &dev_sz);
if (rc) {
@@ -71,7 +70,8 @@
std::string size_str = std::to_string(dev_sz / 4096);
const char* const mke2fs_args[] = {
- "/system/bin/mke2fs", "-t", "ext4", "-b", "4096", fs_blkdev, size_str.c_str(), nullptr};
+ "/system/bin/mke2fs", "-t", "ext4", "-b", "4096", fs_blkdev.c_str(),
+ size_str.c_str(), nullptr};
rc = android_fork_execvp_ext(arraysize(mke2fs_args), const_cast<char**>(mke2fs_args), NULL,
true, LOG_KLOG, true, nullptr, nullptr, 0);
@@ -81,12 +81,7 @@
}
const char* const e2fsdroid_args[] = {
- "/system/bin/e2fsdroid",
- "-e",
- "-a",
- fs_mnt_point,
- fs_blkdev,
- nullptr};
+ "/system/bin/e2fsdroid", "-e", "-a", fs_mnt_point.c_str(), fs_blkdev.c_str(), nullptr};
rc = android_fork_execvp_ext(arraysize(e2fsdroid_args), const_cast<char**>(e2fsdroid_args),
NULL, true, LOG_KLOG, true, nullptr, nullptr, 0);
@@ -97,10 +92,7 @@
return rc;
}
-static int format_f2fs(char *fs_blkdev, uint64_t dev_sz, bool crypt_footer)
-{
- int status;
-
+static int format_f2fs(const std::string& fs_blkdev, uint64_t dev_sz, bool crypt_footer) {
if (!dev_sz) {
int rc = get_dev_sz(fs_blkdev, &dev_sz);
if (rc) {
@@ -118,7 +110,7 @@
const char* const args[] = {
"/system/bin/make_f2fs",
"-g", "android",
- fs_blkdev,
+ fs_blkdev.c_str(),
size_str.c_str(),
nullptr
};
@@ -128,20 +120,21 @@
LOG_KLOG, true, nullptr, nullptr, 0);
}
-int fs_mgr_do_format(struct fstab_rec *fstab, bool crypt_footer)
-{
- int rc = -EINVAL;
+int fs_mgr_do_format(const FstabEntry& entry, bool crypt_footer) {
+ LERROR << __FUNCTION__ << ": Format " << entry.blk_device << " as '" << entry.fs_type << "'";
- LERROR << __FUNCTION__ << ": Format " << fstab->blk_device
- << " as '" << fstab->fs_type << "'";
-
- if (!strncmp(fstab->fs_type, "f2fs", 4)) {
- rc = format_f2fs(fstab->blk_device, fstab->length, crypt_footer);
- } else if (!strncmp(fstab->fs_type, "ext4", 4)) {
- rc = format_ext4(fstab->blk_device, fstab->mount_point, crypt_footer);
+ if (entry.fs_type == "f2fs") {
+ return format_f2fs(entry.blk_device, entry.length, crypt_footer);
+ } else if (entry.fs_type == "ext4") {
+ return format_ext4(entry.blk_device, entry.mount_point, crypt_footer);
} else {
- LERROR << "File system type '" << fstab->fs_type << "' is not supported";
+ LERROR << "File system type '" << entry.fs_type << "' is not supported";
+ return -EINVAL;
}
+}
- return rc;
+int fs_mgr_do_format(struct fstab_rec* rec, bool crypt_footer) {
+ auto entry = FstabRecToFstabEntry(rec);
+
+ return fs_mgr_do_format(entry, crypt_footer);
}
diff --git a/fs_mgr/fs_mgr_fstab.cpp b/fs_mgr/fs_mgr_fstab.cpp
index e89c91c..e0891eb 100644
--- a/fs_mgr/fs_mgr_fstab.cpp
+++ b/fs_mgr/fs_mgr_fstab.cpp
@@ -33,31 +33,33 @@
#include "fs_mgr_priv.h"
+using android::base::Split;
using android::base::StartsWith;
const std::string kDefaultAndroidDtDir("/proc/device-tree/firmware/android");
struct fs_mgr_flag_values {
- char *key_loc;
- char* key_dir;
- char *verity_loc;
- char *sysfs_path;
- long long part_length;
- char *label;
- int partnum;
- int swap_prio;
- int max_comp_streams;
- unsigned int zram_size;
- uint64_t reserved_size;
- unsigned int file_contents_mode;
- unsigned int file_names_mode;
- unsigned int erase_blk_size;
- unsigned int logical_blk_size;
+ std::string key_loc;
+ std::string key_dir;
+ std::string verity_loc;
+ std::string sysfs_path;
+ off64_t part_length = 0;
+ std::string label;
+ int partnum = -1;
+ int swap_prio = -1;
+ int max_comp_streams = 0;
+ off64_t zram_size = 0;
+ off64_t reserved_size = 0;
+ int file_contents_mode = 0;
+ int file_names_mode = 0;
+ off64_t erase_blk_size = 0;
+ off64_t logical_blk_size = 0;
+ std::string vbmeta_partition;
};
struct flag_list {
const char *name;
- unsigned int flag;
+ uint64_t flag;
};
static struct flag_list mount_flags[] = {
@@ -97,11 +99,13 @@
{"verifyatboot", MF_VERIFYATBOOT},
{"verify", MF_VERIFY},
{"avb", MF_AVB},
+ {"avb=", MF_AVB},
{"noemulatedsd", MF_NOEMULATEDSD},
{"notrim", MF_NOTRIM},
{"formattable", MF_FORMATTABLE},
{"slotselect", MF_SLOTSELECT},
{"nofail", MF_NOFAIL},
+ {"first_stage_mount", MF_FIRST_STAGE_MOUNT},
{"latemount", MF_LATEMOUNT},
{"reservedsize=", MF_RESERVEDSIZE},
{"quota", MF_QUOTA},
@@ -112,6 +116,7 @@
{"logical", MF_LOGICAL},
{"checkpoint=block", MF_CHECKPOINT_BLK},
{"checkpoint=fs", MF_CHECKPOINT_FS},
+ {"slotselect_other", MF_SLOTSELECT_OTHER},
{0, 0},
};
@@ -119,9 +124,11 @@
#define EM_ICE 2
#define EM_AES_256_CTS 3
#define EM_AES_256_HEH 4
+#define EM_ADIANTUM 5
static const struct flag_list file_contents_encryption_modes[] = {
{"aes-256-xts", EM_AES_256_XTS},
+ {"adiantum", EM_ADIANTUM},
{"software", EM_AES_256_XTS}, /* alias for backwards compatibility */
{"ice", EM_ICE}, /* hardware-specific inline cryptographic engine */
{0, 0},
@@ -130,12 +137,12 @@
static const struct flag_list file_names_encryption_modes[] = {
{"aes-256-cts", EM_AES_256_CTS},
{"aes-256-heh", EM_AES_256_HEH},
+ {"adiantum", EM_ADIANTUM},
{0, 0},
};
-static unsigned int encryption_mode_to_flag(const struct flag_list *list,
- const char *mode, const char *type)
-{
+static int encryption_mode_to_flag(const struct flag_list* list, const char* mode,
+ const char* type) {
const struct flag_list *j;
for (j = list; j->name; ++j) {
@@ -147,9 +154,7 @@
return 0;
}
-static const char *flag_to_encryption_mode(const struct flag_list *list,
- unsigned int flag)
-{
+static const char* flag_to_encryption_mode(const struct flag_list* list, uint64_t flag) {
const struct flag_list *j;
for (j = list; j->name; ++j) {
@@ -160,9 +165,8 @@
return nullptr;
}
-static uint64_t calculate_zram_size(unsigned int percentage)
-{
- uint64_t total;
+static off64_t calculate_zram_size(unsigned int percentage) {
+ off64_t total;
total = sysconf(_SC_PHYS_PAGES);
total *= percentage;
@@ -173,10 +177,9 @@
return total;
}
-static uint64_t parse_size(const char *arg)
-{
+static off64_t parse_size(const char* arg) {
char *endptr;
- uint64_t size = strtoull(arg, &endptr, 10);
+ off64_t size = strtoll(arg, &endptr, 10);
if (*endptr == 'k' || *endptr == 'K')
size *= 1024LL;
else if (*endptr == 'm' || *endptr == 'M')
@@ -205,23 +208,13 @@
return false;
}
-static int parse_flags(char *flags, struct flag_list *fl,
- struct fs_mgr_flag_values *flag_vals,
- char *fs_options, int fs_options_len)
-{
- int f = 0;
+static uint64_t parse_flags(char* flags, struct flag_list* fl, struct fs_mgr_flag_values* flag_vals,
+ char* fs_options, int fs_options_len) {
+ uint64_t f = 0;
int i;
char *p;
char *savep;
- /* initialize flag values. If we find a relevant flag, we'll
- * update the value */
- if (flag_vals) {
- memset(flag_vals, 0, sizeof(*flag_vals));
- flag_vals->partnum = -1;
- flag_vals->swap_prio = -1; /* negative means it wasn't specified. */
- }
-
/* initialize fs_options to the null string */
if (fs_options && (fs_options_len > 0)) {
fs_options[0] = '\0';
@@ -247,22 +240,22 @@
/* The encryptable flag is followed by an = and the
* location of the keys. Get it and return it.
*/
- flag_vals->key_loc = strdup(arg);
+ flag_vals->key_loc = arg;
} else if (flag == MF_VERIFY) {
/* If the verify flag is followed by an = and the
* location for the verity state, get it and return it.
*/
- flag_vals->verity_loc = strdup(arg);
+ flag_vals->verity_loc = arg;
} else if (flag == MF_FORCECRYPT) {
/* The forceencrypt flag is followed by an = and the
* location of the keys. Get it and return it.
*/
- flag_vals->key_loc = strdup(arg);
+ flag_vals->key_loc = arg;
} else if (flag == MF_FORCEFDEORFBE) {
/* The forcefdeorfbe flag is followed by an = and the
* location of the keys. Get it and return it.
*/
- flag_vals->key_loc = strdup(arg);
+ flag_vals->key_loc = arg;
flag_vals->file_contents_mode = EM_AES_256_XTS;
flag_vals->file_names_mode = EM_AES_256_CTS;
} else if (flag == MF_FILEENCRYPTION) {
@@ -283,6 +276,8 @@
flag_vals->file_names_mode =
encryption_mode_to_flag(file_names_encryption_modes,
colon + 1, "file names");
+ } else if (flag_vals->file_contents_mode == EM_ADIANTUM) {
+ flag_vals->file_names_mode = EM_ADIANTUM;
} else {
flag_vals->file_names_mode = EM_AES_256_CTS;
}
@@ -290,7 +285,7 @@
/* The metadata flag is followed by an = and the
* directory for the keys. Get it and return it.
*/
- flag_vals->key_dir = strdup(arg);
+ flag_vals->key_dir = arg;
} else if (flag == MF_LENGTH) {
/* The length flag is followed by an = and the
* size of the partition. Get it and return it.
@@ -307,8 +302,7 @@
auto label_end = strchr(label_start, ':');
if (label_end) {
- flag_vals->label = strndup(label_start,
- (int) (label_end - label_start));
+ flag_vals->label = std::string(label_start, (int)(label_end - label_start));
auto part_start = label_end + 1;
if (!strcmp(part_start, "auto")) {
flag_vals->partnum = -1;
@@ -322,6 +316,8 @@
flag_vals->swap_prio = strtoll(arg, NULL, 0);
} else if (flag == MF_MAX_COMP_STREAMS) {
flag_vals->max_comp_streams = strtoll(arg, NULL, 0);
+ } else if (flag == MF_AVB) {
+ flag_vals->vbmeta_partition = arg;
} else if (flag == MF_ZRAMSIZE) {
auto is_percent = !!strrchr(arg, '%');
auto val = strtoll(arg, NULL, 0);
@@ -339,7 +335,7 @@
* erase block size. Get it, check that it is a power of 2 and
* at least 4096, and return it.
*/
- auto val = strtoul(arg, NULL, 0);
+ auto val = strtoll(arg, nullptr, 0);
if (val >= 4096 && (val & (val - 1)) == 0)
flag_vals->erase_blk_size = val;
} else if (flag == MF_LOGICALBLKSIZE) {
@@ -347,12 +343,12 @@
* logical block size. Get it, check that it is a power of 2 and
* at least 4096, and return it.
*/
- auto val = strtoul(arg, NULL, 0);
+ auto val = strtoll(arg, nullptr, 0);
if (val >= 4096 && (val & (val - 1)) == 0)
flag_vals->logical_blk_size = val;
} else if (flag == MF_SYSFS) {
/* The path to trigger device gc by idle-maint of vold. */
- flag_vals->sysfs_path = strdup(arg);
+ flag_vals->sysfs_path = arg;
}
break;
}
@@ -509,49 +505,17 @@
return false;
}
-static struct fstab* fs_mgr_read_fstab_file(FILE* fstab_file, bool proc_mounts) {
- int cnt, entries;
+static bool fs_mgr_read_fstab_file(FILE* fstab_file, bool proc_mounts, Fstab* fstab_out) {
ssize_t len;
size_t alloc_len = 0;
char *line = NULL;
const char *delim = " \t";
char *save_ptr, *p;
- struct fstab *fstab = NULL;
+ Fstab fstab;
struct fs_mgr_flag_values flag_vals;
#define FS_OPTIONS_LEN 1024
char tmp_fs_options[FS_OPTIONS_LEN];
- entries = 0;
- while ((len = getline(&line, &alloc_len, fstab_file)) != -1) {
- /* if the last character is a newline, shorten the string by 1 byte */
- if (line[len - 1] == '\n') {
- line[len - 1] = '\0';
- }
- /* Skip any leading whitespace */
- p = line;
- while (isspace(*p)) {
- p++;
- }
- /* ignore comments or empty lines */
- if (*p == '#' || *p == '\0')
- continue;
- entries++;
- }
-
- if (!entries) {
- LERROR << "No entries found in fstab";
- goto err;
- }
-
- /* Allocate and init the fstab structure */
- fstab = static_cast<struct fstab *>(calloc(1, sizeof(struct fstab)));
- fstab->num_entries = entries;
- fstab->recs = static_cast<struct fstab_rec *>(
- calloc(fstab->num_entries, sizeof(struct fstab_rec)));
-
- fseek(fstab_file, 0, SEEK_SET);
-
- cnt = 0;
while ((len = getline(&line, &alloc_len, fstab_file)) != -1) {
/* if the last character is a newline, shorten the string by 1 byte */
if (line[len - 1] == '\n') {
@@ -567,46 +531,36 @@
if (*p == '#' || *p == '\0')
continue;
- /* If a non-comment entry is greater than the size we allocated, give an
- * error and quit. This can happen in the unlikely case the file changes
- * between the two reads.
- */
- if (cnt >= entries) {
- LERROR << "Tried to process more entries than counted";
- break;
- }
+ FstabEntry entry;
if (!(p = strtok_r(line, delim, &save_ptr))) {
LERROR << "Error parsing mount source";
goto err;
}
- fstab->recs[cnt].blk_device = strdup(p);
+ entry.blk_device = p;
if (!(p = strtok_r(NULL, delim, &save_ptr))) {
LERROR << "Error parsing mount_point";
goto err;
}
- fstab->recs[cnt].mount_point = strdup(p);
+ entry.mount_point = p;
if (!(p = strtok_r(NULL, delim, &save_ptr))) {
LERROR << "Error parsing fs_type";
goto err;
}
- fstab->recs[cnt].fs_type = strdup(p);
+ entry.fs_type = p;
if (!(p = strtok_r(NULL, delim, &save_ptr))) {
LERROR << "Error parsing mount_flags";
goto err;
}
tmp_fs_options[0] = '\0';
- fstab->recs[cnt].flags = parse_flags(p, mount_flags, NULL,
- tmp_fs_options, FS_OPTIONS_LEN);
+ entry.flags = parse_flags(p, mount_flags, NULL, tmp_fs_options, FS_OPTIONS_LEN);
/* fs_options are optional */
if (tmp_fs_options[0]) {
- fstab->recs[cnt].fs_options = strdup(tmp_fs_options);
- } else {
- fstab->recs[cnt].fs_options = NULL;
+ entry.fs_options = tmp_fs_options;
}
// For /proc/mounts, ignore everything after mnt_freq and mnt_passno
@@ -616,78 +570,48 @@
LERROR << "Error parsing fs_mgr_options";
goto err;
}
- fstab->recs[cnt].fs_mgr_flags = parse_flags(p, fs_mgr_flags,
- &flag_vals, NULL, 0);
- fstab->recs[cnt].key_loc = flag_vals.key_loc;
- fstab->recs[cnt].key_dir = flag_vals.key_dir;
- fstab->recs[cnt].verity_loc = flag_vals.verity_loc;
- fstab->recs[cnt].length = flag_vals.part_length;
- fstab->recs[cnt].label = flag_vals.label;
- fstab->recs[cnt].partnum = flag_vals.partnum;
- fstab->recs[cnt].swap_prio = flag_vals.swap_prio;
- fstab->recs[cnt].max_comp_streams = flag_vals.max_comp_streams;
- fstab->recs[cnt].zram_size = flag_vals.zram_size;
- fstab->recs[cnt].reserved_size = flag_vals.reserved_size;
- fstab->recs[cnt].file_contents_mode = flag_vals.file_contents_mode;
- fstab->recs[cnt].file_names_mode = flag_vals.file_names_mode;
- fstab->recs[cnt].erase_blk_size = flag_vals.erase_blk_size;
- fstab->recs[cnt].logical_blk_size = flag_vals.logical_blk_size;
- fstab->recs[cnt].sysfs_path = flag_vals.sysfs_path;
- if (fstab->recs[cnt].fs_mgr_flags & MF_LOGICAL) {
- fstab->recs[cnt].logical_partition_name = strdup(fstab->recs[cnt].blk_device);
+ entry.fs_mgr_flags.val = parse_flags(p, fs_mgr_flags, &flag_vals, NULL, 0);
+
+ entry.key_loc = std::move(flag_vals.key_loc);
+ entry.key_dir = std::move(flag_vals.key_dir);
+ entry.verity_loc = std::move(flag_vals.verity_loc);
+ entry.length = flag_vals.part_length;
+ entry.label = std::move(flag_vals.label);
+ entry.partnum = flag_vals.partnum;
+ entry.swap_prio = flag_vals.swap_prio;
+ entry.max_comp_streams = flag_vals.max_comp_streams;
+ entry.zram_size = flag_vals.zram_size;
+ entry.reserved_size = flag_vals.reserved_size;
+ entry.file_contents_mode = flag_vals.file_contents_mode;
+ entry.file_names_mode = flag_vals.file_names_mode;
+ entry.erase_blk_size = flag_vals.erase_blk_size;
+ entry.logical_blk_size = flag_vals.logical_blk_size;
+ entry.sysfs_path = std::move(flag_vals.sysfs_path);
+ entry.vbmeta_partition = std::move(flag_vals.vbmeta_partition);
+ if (entry.fs_mgr_flags.logical) {
+ entry.logical_partition_name = entry.blk_device;
}
- cnt++;
+ fstab.emplace_back(std::move(entry));
}
+
+ if (fstab.empty()) {
+ LERROR << "No entries found in fstab";
+ goto err;
+ }
+
/* If an A/B partition, modify block device to be the real block device */
- if (!fs_mgr_update_for_slotselect(fstab)) {
+ if (!fs_mgr_update_for_slotselect(&fstab)) {
LERROR << "Error updating for slotselect";
goto err;
}
free(line);
- return fstab;
+ *fstab_out = std::move(fstab);
+ return true;
err:
free(line);
- if (fstab)
- fs_mgr_free_fstab(fstab);
- return NULL;
-}
-
-/* merges fstab entries from both a and b, then returns the merged result.
- * note that the caller should only manage the return pointer without
- * doing further memory management for the two inputs, i.e. only need to
- * frees up memory of the return value without touching a and b. */
-static struct fstab *in_place_merge(struct fstab *a, struct fstab *b)
-{
- if (!a && !b) return nullptr;
- if (!a) return b;
- if (!b) return a;
-
- int total_entries = a->num_entries + b->num_entries;
- a->recs = static_cast<struct fstab_rec *>(realloc(
- a->recs, total_entries * (sizeof(struct fstab_rec))));
- if (!a->recs) {
- LERROR << __FUNCTION__ << "(): failed to allocate fstab recs";
- // If realloc() fails the original block is left untouched;
- // it is not freed or moved. So we have to free both a and b here.
- fs_mgr_free_fstab(a);
- fs_mgr_free_fstab(b);
- return nullptr;
- }
-
- for (int i = a->num_entries, j = 0; i < total_entries; i++, j++) {
- // Copy the structs by assignment.
- a->recs[i] = b->recs[j];
- }
-
- // We can't call fs_mgr_free_fstab because a->recs still references the
- // memory allocated by strdup.
- free(b->recs);
- free(b);
-
- a->num_entries = total_entries;
- return a;
+ return false;
}
/* Extracts <device>s from the by-name symlinks specified in a fstab:
@@ -700,11 +624,11 @@
* /dev/block/pci/soc.0/f9824900.sdhci/by-name/vendor
* it returns a set { "soc/1da4000.ufshc", "soc.0/f9824900.sdhci" }.
*/
-static std::set<std::string> extract_boot_devices(const fstab& fstab) {
+static std::set<std::string> extract_boot_devices(const Fstab& fstab) {
std::set<std::string> boot_devices;
- for (int i = 0; i < fstab.num_entries; i++) {
- std::string blk_device(fstab.recs[i].blk_device);
+ for (const auto& entry : fstab) {
+ std::string blk_device = entry.blk_device;
// Skips blk_device that doesn't conform to the format.
if (!android::base::StartsWith(blk_device, "/dev/block") ||
android::base::StartsWith(blk_device, "/dev/block/by-name") ||
@@ -733,33 +657,36 @@
return boot_devices;
}
-struct fstab *fs_mgr_read_fstab(const char *fstab_path)
-{
- struct fstab *fstab;
-
- auto fstab_file = std::unique_ptr<FILE, decltype(&fclose)>{fopen(fstab_path, "re"), fclose};
+bool ReadFstabFromFile(const std::string& path, Fstab* fstab) {
+ auto fstab_file = std::unique_ptr<FILE, decltype(&fclose)>{fopen(path.c_str(), "re"), fclose};
if (!fstab_file) {
- PERROR << __FUNCTION__<< "(): cannot open file: '" << fstab_path << "'";
+ PERROR << __FUNCTION__ << "(): cannot open file: '" << path << "'";
+ return false;
+ }
+
+ if (!fs_mgr_read_fstab_file(fstab_file.get(), path == "/proc/mounts", fstab)) {
+ LERROR << __FUNCTION__ << "(): failed to load fstab from : '" << path << "'";
+ return false;
+ }
+
+ return true;
+}
+
+struct fstab* fs_mgr_read_fstab(const char* fstab_path) {
+ Fstab fstab;
+ if (!ReadFstabFromFile(fstab_path, &fstab)) {
return nullptr;
}
- fstab = fs_mgr_read_fstab_file(fstab_file.get(), !strcmp("/proc/mounts", fstab_path));
- if (!fstab) {
- LERROR << __FUNCTION__ << "(): failed to load fstab from : '" << fstab_path << "'";
- }
-
- return fstab;
+ return FstabToLegacyFstab(fstab);
}
-/* Returns fstab entries parsed from the device tree if they
- * exist
- */
-struct fstab *fs_mgr_read_fstab_dt()
-{
+// Returns fstab entries parsed from the device tree if they exist
+bool ReadFstabFromDt(Fstab* fstab) {
std::string fstab_buf = read_fstab_from_dt();
if (fstab_buf.empty()) {
LINFO << __FUNCTION__ << "(): failed to read fstab from dt";
- return nullptr;
+ return false;
}
std::unique_ptr<FILE, decltype(&fclose)> fstab_file(
@@ -767,16 +694,25 @@
fstab_buf.length(), "r"), fclose);
if (!fstab_file) {
PERROR << __FUNCTION__ << "(): failed to create a file stream for fstab dt";
+ return false;
+ }
+
+ if (!fs_mgr_read_fstab_file(fstab_file.get(), false, fstab)) {
+ LERROR << __FUNCTION__ << "(): failed to load fstab from kernel:"
+ << std::endl << fstab_buf;
+ return false;
+ }
+
+ return true;
+}
+
+struct fstab* fs_mgr_read_fstab_dt() {
+ Fstab fstab;
+ if (!ReadFstabFromDt(&fstab)) {
return nullptr;
}
- struct fstab* fstab = fs_mgr_read_fstab_file(fstab_file.get(), false);
- if (!fstab) {
- LERROR << __FUNCTION__ << "(): failed to load fstab from kernel:"
- << std::endl << fstab_buf;
- }
-
- return fstab;
+ return FstabToLegacyFstab(fstab);
}
/*
@@ -802,32 +738,42 @@
return std::string();
}
-/*
- * loads the fstab file and combines with fstab entries passed in from device tree.
- */
-struct fstab *fs_mgr_read_fstab_default()
-{
- std::string default_fstab;
+// Loads the fstab file and combines with fstab entries passed in from device tree.
+bool ReadDefaultFstab(Fstab* fstab) {
+ Fstab dt_fstab;
+ ReadFstabFromDt(&dt_fstab);
+ *fstab = std::move(dt_fstab);
+
+ std::string default_fstab_path;
// Use different fstab paths for normal boot and recovery boot, respectively
if (access("/system/bin/recovery", F_OK) == 0) {
- default_fstab = "/etc/recovery.fstab";
+ default_fstab_path = "/etc/recovery.fstab";
} else { // normal boot
- default_fstab = get_fstab_path();
+ default_fstab_path = get_fstab_path();
}
- struct fstab* fstab = nullptr;
- if (!default_fstab.empty()) {
- fstab = fs_mgr_read_fstab(default_fstab.c_str());
+ Fstab default_fstab;
+ if (!default_fstab_path.empty()) {
+ ReadFstabFromFile(default_fstab_path, &default_fstab);
} else {
LINFO << __FUNCTION__ << "(): failed to find device default fstab";
}
- struct fstab* fstab_dt = fs_mgr_read_fstab_dt();
+ for (auto&& entry : default_fstab) {
+ fstab->emplace_back(std::move(entry));
+ }
- // combines fstab entries passed in from device tree with
- // the ones found from default_fstab file
- return in_place_merge(fstab_dt, fstab);
+ return !fstab->empty();
+}
+
+struct fstab* fs_mgr_read_fstab_default() {
+ Fstab fstab;
+ if (!ReadDefaultFstab(&fstab)) {
+ return nullptr;
+ }
+
+ return FstabToLegacyFstab(fstab);
}
void fs_mgr_free_fstab(struct fstab *fstab)
@@ -904,20 +850,93 @@
}
std::set<std::string> fs_mgr_get_boot_devices() {
- // boot_devices can be specified in device tree.
- std::string dt_value;
- std::string file_name = get_android_dt_dir() + "/boot_devices";
- if (read_dt_file(file_name, &dt_value)) {
- auto boot_devices = android::base::Split(dt_value, ",");
+ // First check the kernel commandline, then try the device tree otherwise
+ std::string dt_file_name = get_android_dt_dir() + "/boot_devices";
+ std::string value;
+ if (fs_mgr_get_boot_config_from_kernel_cmdline("boot_devices", &value) ||
+ read_dt_file(dt_file_name, &value)) {
+ auto boot_devices = Split(value, ",");
return std::set<std::string>(boot_devices.begin(), boot_devices.end());
}
// Fallback to extract boot devices from fstab.
- std::unique_ptr<fstab, decltype(&fs_mgr_free_fstab)> fstab(fs_mgr_read_fstab_default(),
- fs_mgr_free_fstab);
- if (fstab) return extract_boot_devices(*fstab);
+ Fstab fstab;
+ if (!ReadDefaultFstab(&fstab)) {
+ return {};
+ }
- return {};
+ return extract_boot_devices(fstab);
+}
+
+FstabEntry FstabRecToFstabEntry(const fstab_rec* fstab_rec) {
+ FstabEntry entry;
+ entry.blk_device = fstab_rec->blk_device;
+ entry.logical_partition_name = fstab_rec->logical_partition_name;
+ entry.mount_point = fstab_rec->mount_point;
+ entry.fs_type = fstab_rec->fs_type;
+ entry.flags = fstab_rec->flags;
+ entry.fs_options = fstab_rec->fs_options;
+ entry.fs_mgr_flags.val = fstab_rec->fs_mgr_flags;
+ entry.key_loc = fstab_rec->key_loc;
+ entry.key_dir = fstab_rec->key_dir;
+ entry.verity_loc = fstab_rec->verity_loc;
+ entry.length = fstab_rec->length;
+ entry.label = fstab_rec->label;
+ entry.partnum = fstab_rec->partnum;
+ entry.swap_prio = fstab_rec->swap_prio;
+ entry.max_comp_streams = fstab_rec->max_comp_streams;
+ entry.zram_size = fstab_rec->zram_size;
+ entry.reserved_size = fstab_rec->reserved_size;
+ entry.file_contents_mode = fstab_rec->file_contents_mode;
+ entry.file_names_mode = fstab_rec->file_names_mode;
+ entry.erase_blk_size = fstab_rec->erase_blk_size;
+ entry.logical_blk_size = fstab_rec->logical_blk_size;
+ entry.sysfs_path = fstab_rec->sysfs_path;
+
+ return entry;
+}
+
+Fstab LegacyFstabToFstab(const struct fstab* legacy_fstab) {
+ Fstab fstab;
+ for (int i = 0; i < legacy_fstab->num_entries; i++) {
+ fstab.emplace_back(FstabRecToFstabEntry(&legacy_fstab->recs[i]));
+ }
+
+ return fstab;
+}
+
+fstab* FstabToLegacyFstab(const Fstab& fstab) {
+ struct fstab* legacy_fstab = static_cast<struct fstab*>(calloc(1, sizeof(struct fstab)));
+ legacy_fstab->num_entries = fstab.size();
+ legacy_fstab->recs =
+ static_cast<fstab_rec*>(calloc(legacy_fstab->num_entries, sizeof(fstab_rec)));
+
+ for (int i = 0; i < legacy_fstab->num_entries; i++) {
+ legacy_fstab->recs[i].blk_device = strdup(fstab[i].blk_device.c_str());
+ legacy_fstab->recs[i].logical_partition_name =
+ strdup(fstab[i].logical_partition_name.c_str());
+ legacy_fstab->recs[i].mount_point = strdup(fstab[i].mount_point.c_str());
+ legacy_fstab->recs[i].fs_type = strdup(fstab[i].fs_type.c_str());
+ legacy_fstab->recs[i].flags = fstab[i].flags;
+ legacy_fstab->recs[i].fs_options = strdup(fstab[i].fs_options.c_str());
+ legacy_fstab->recs[i].fs_mgr_flags = fstab[i].fs_mgr_flags.val;
+ legacy_fstab->recs[i].key_loc = strdup(fstab[i].key_loc.c_str());
+ legacy_fstab->recs[i].key_dir = strdup(fstab[i].key_dir.c_str());
+ legacy_fstab->recs[i].verity_loc = strdup(fstab[i].verity_loc.c_str());
+ legacy_fstab->recs[i].length = fstab[i].length;
+ legacy_fstab->recs[i].label = strdup(fstab[i].label.c_str());
+ legacy_fstab->recs[i].partnum = fstab[i].partnum;
+ legacy_fstab->recs[i].swap_prio = fstab[i].swap_prio;
+ legacy_fstab->recs[i].max_comp_streams = fstab[i].max_comp_streams;
+ legacy_fstab->recs[i].zram_size = fstab[i].zram_size;
+ legacy_fstab->recs[i].reserved_size = fstab[i].reserved_size;
+ legacy_fstab->recs[i].file_contents_mode = fstab[i].file_contents_mode;
+ legacy_fstab->recs[i].file_names_mode = fstab[i].file_names_mode;
+ legacy_fstab->recs[i].erase_blk_size = fstab[i].erase_blk_size;
+ legacy_fstab->recs[i].logical_blk_size = fstab[i].logical_blk_size;
+ legacy_fstab->recs[i].sysfs_path = strdup(fstab[i].sysfs_path.c_str());
+ }
+ return legacy_fstab;
}
int fs_mgr_is_voldmanaged(const struct fstab_rec *fstab)
@@ -991,6 +1010,10 @@
return fstab->fs_mgr_flags & MF_NOFAIL;
}
+int fs_mgr_is_first_stage_mount(const struct fstab_rec* fstab) {
+ return fstab->fs_mgr_flags & MF_FIRST_STAGE_MOUNT;
+}
+
int fs_mgr_is_latemount(const struct fstab_rec* fstab) {
return fstab->fs_mgr_flags & MF_LATEMOUNT;
}
diff --git a/fs_mgr/fs_mgr_overlayfs.cpp b/fs_mgr/fs_mgr_overlayfs.cpp
index bef46e1..8bfcd81 100644
--- a/fs_mgr/fs_mgr_overlayfs.cpp
+++ b/fs_mgr/fs_mgr_overlayfs.cpp
@@ -70,19 +70,11 @@
#if ALLOW_ADBD_DISABLE_VERITY == 0 // If we are a user build, provide stubs
-bool fs_mgr_overlayfs_mount_all(fstab*) {
+bool fs_mgr_overlayfs_mount_all(Fstab*) {
return false;
}
-bool fs_mgr_overlayfs_mount_all(const std::vector<const fstab_rec*>&) {
- return false;
-}
-
-std::vector<std::string> fs_mgr_overlayfs_required_devices(fstab*) {
- return {};
-}
-
-std::vector<std::string> fs_mgr_overlayfs_required_devices(const std::vector<const fstab_rec*>&) {
+std::vector<std::string> fs_mgr_overlayfs_required_devices(Fstab*) {
return {};
}
@@ -96,6 +88,10 @@
return false;
}
+bool fs_mgr_overlayfs_is_setup() {
+ return false;
+}
+
#else // ALLOW_ADBD_DISABLE_VERITY == 0
namespace {
@@ -127,28 +123,31 @@
// At less than 1% free space return value of false,
// means we will try to wrap with overlayfs.
-bool fs_mgr_filesystem_has_space(const char* mount_point) {
+bool fs_mgr_filesystem_has_space(const std::string& mount_point) {
// If we have access issues to find out space remaining, return true
// to prevent us trying to override with overlayfs.
struct statvfs vst;
- if (statvfs(mount_point, &vst)) return true;
+ if (statvfs(mount_point.c_str(), &vst)) return true;
static constexpr int kPercentThreshold = 1; // 1%
return (vst.f_bfree >= (vst.f_blocks * kPercentThreshold / 100));
}
-bool fs_mgr_overlayfs_enabled(struct fstab_rec* fsrec) {
+bool fs_mgr_overlayfs_enabled(FstabEntry* entry) {
// readonly filesystem, can not be mount -o remount,rw
// if squashfs or if free space is (near) zero making such a remount
// virtually useless, or if there are shared blocks that prevent remount,rw
- if (("squashfs"s == fsrec->fs_type) || !fs_mgr_filesystem_has_space(fsrec->mount_point)) {
+ if ("squashfs" == entry->fs_type || !fs_mgr_filesystem_has_space(entry->mount_point)) {
return true;
}
- if (fs_mgr_is_logical(fsrec)) {
- fs_mgr_update_logical_partition(fsrec);
+ if (entry->fs_mgr_flags.logical) {
+ fs_mgr_update_logical_partition(entry);
}
- return fs_mgr_has_shared_blocks(fsrec->mount_point, fsrec->blk_device);
+ auto save_errno = errno;
+ auto has_shared_blocks = fs_mgr_has_shared_blocks(entry->mount_point, entry->blk_device);
+ errno = save_errno;
+ return has_shared_blocks;
}
bool fs_mgr_rm_all(const std::string& path, bool* change = nullptr, int level = 0) {
@@ -246,22 +245,16 @@
}
bool fs_mgr_overlayfs_already_mounted(const std::string& mount_point, bool overlay_only = true) {
- std::unique_ptr<fstab, decltype(&fs_mgr_free_fstab)> fstab(fs_mgr_read_fstab("/proc/mounts"),
- fs_mgr_free_fstab);
- if (!fstab) return false;
+ Fstab fstab;
+ if (!ReadFstabFromFile("/proc/mounts", &fstab)) {
+ return false;
+ }
const auto lowerdir = kLowerdirOption + mount_point;
- for (auto i = 0; i < fstab->num_entries; ++i) {
- const auto fsrec = &fstab->recs[i];
- const auto fs_type = fsrec->fs_type;
- if (!fs_type) continue;
- if (overlay_only && ("overlay"s != fs_type) && ("overlayfs"s != fs_type)) continue;
- auto fsrec_mount_point = fsrec->mount_point;
- if (!fsrec_mount_point) continue;
- if (mount_point != fsrec_mount_point) continue;
+ for (const auto& entry : fstab) {
+ if (overlay_only && "overlay" != entry.fs_type && "overlayfs" != entry.fs_type) continue;
+ if (mount_point != entry.mount_point) continue;
if (!overlay_only) return true;
- const auto fs_options = fsrec->fs_options;
- if (!fs_options) continue;
- const auto options = android::base::Split(fs_options, ",");
+ const auto options = android::base::Split(entry.fs_options, ",");
for (const auto& opt : options) {
if (opt == lowerdir) {
return true;
@@ -273,34 +266,27 @@
std::vector<std::string> fs_mgr_overlayfs_verity_enabled_list() {
std::vector<std::string> ret;
- fs_mgr_update_verity_state([&ret](fstab_rec*, const char* mount_point, int, int) {
- ret.emplace_back(mount_point);
- });
+ auto save_errno = errno;
+ fs_mgr_update_verity_state(
+ [&ret](const std::string& mount_point, int) { ret.emplace_back(mount_point); });
+ if ((errno == ENOENT) || (errno == ENXIO)) errno = save_errno;
return ret;
}
-bool fs_mgr_wants_overlayfs(fstab_rec* fsrec) {
- if (!fsrec) return false;
-
- auto fsrec_mount_point = fsrec->mount_point;
- if (!fsrec_mount_point || !fsrec_mount_point[0]) return false;
- if (!fsrec->blk_device) return false;
-
- if (!fsrec->fs_type) return false;
-
+bool fs_mgr_wants_overlayfs(FstabEntry* entry) {
// Don't check entries that are managed by vold.
- if (fsrec->fs_mgr_flags & (MF_VOLDMANAGED | MF_RECOVERYONLY)) return false;
+ if (entry->fs_mgr_flags.vold_managed || entry->fs_mgr_flags.recovery_only) return false;
// Only concerned with readonly partitions.
- if (!(fsrec->flags & MS_RDONLY)) return false;
+ if (!(entry->flags & MS_RDONLY)) return false;
// If unbindable, do not allow overlayfs as this could expose us to
// security issues. On Android, this could also be used to turn off
// the ability to overlay an otherwise acceptable filesystem since
// /system and /vendor are never bound(sic) to.
- if (fsrec->flags & MS_UNBINDABLE) return false;
+ if (entry->flags & MS_UNBINDABLE) return false;
- if (!fs_mgr_overlayfs_enabled(fsrec)) return false;
+ if (!fs_mgr_overlayfs_enabled(entry)) return false;
return true;
}
@@ -382,19 +368,33 @@
return SlotNumberForSlotSuffix(fs_mgr_get_slot_suffix());
}
+const auto kPhysicalDevice = "/dev/block/by-name/"s;
+
std::string fs_mgr_overlayfs_super_device(uint32_t slot_number) {
- return "/dev/block/by-name/" + fs_mgr_get_super_partition_name(slot_number);
+ return kPhysicalDevice + fs_mgr_get_super_partition_name(slot_number);
}
-bool fs_mgr_overlayfs_has_logical(const fstab* fstab) {
- if (!fstab) return false;
- for (auto i = 0; i < fstab->num_entries; i++) {
- const auto fsrec = &fstab->recs[i];
- if (fs_mgr_is_logical(fsrec)) return true;
+bool fs_mgr_overlayfs_has_logical(const Fstab& fstab) {
+ for (const auto& entry : fstab) {
+ if (entry.fs_mgr_flags.logical) {
+ return true;
+ }
}
return false;
}
+void fs_mgr_overlayfs_umount_scratch() {
+ // Lazy umount will allow us to move on and possibly later
+ // establish a new fresh mount without requiring a reboot should
+ // the developer wish to restart. Old references should melt
+ // away or have no data. Main goal is to shut the door on the
+ // current overrides with an expectation of a subsequent reboot,
+ // thus any errors here are ignored.
+ umount2(kScratchMountPoint.c_str(), MNT_DETACH);
+ LINFO << "umount(" << kScratchMountPoint << ")";
+ rmdir(kScratchMountPoint.c_str());
+}
+
// reduce 'DM_DEV_STATUS failed for scratch: No such device or address' noise
std::string scratch_device_cache;
@@ -408,13 +408,7 @@
auto save_errno = errno;
if (fs_mgr_overlayfs_already_mounted(kScratchMountPoint, false)) {
- // Lazy umount will allow us to move on and possibly later
- // establish a new fresh mount without requiring a reboot should
- // the developer wish to restart. Old references should melt
- // away or have no data. Main goal is to shut the door on the
- // current overrides with an expectation of a subsequent reboot,
- // thus any errors here are ignored.
- umount2(kScratchMountPoint.c_str(), MNT_DETACH);
+ fs_mgr_overlayfs_umount_scratch();
}
auto builder = MetadataBuilder::New(super_device, slot_number);
if (!builder) {
@@ -510,7 +504,7 @@
// hijack __mount() report format to help triage
auto report = "__mount(source=overlay,target="s + mount_point + ",type=overlay";
const auto opt_list = android::base::Split(options, ",");
- for (const auto opt : opt_list) {
+ for (const auto& opt : opt_list) {
if (android::base::StartsWith(opt, kUpperdirOption)) {
report = report + "," + opt;
break;
@@ -529,15 +523,12 @@
}
}
-std::vector<std::string> fs_mgr_candidate_list(fstab* fstab, const char* mount_point = nullptr) {
+std::vector<std::string> fs_mgr_candidate_list(Fstab* fstab, const char* mount_point = nullptr) {
std::vector<std::string> mounts;
- if (!fstab) return mounts;
-
auto verity = fs_mgr_overlayfs_verity_enabled_list();
- for (auto i = 0; i < fstab->num_entries; i++) {
- const auto fsrec = &fstab->recs[i];
- if (!fs_mgr_wants_overlayfs(fsrec)) continue;
- std::string new_mount_point(fs_mgr_mount_point(fsrec->mount_point));
+ for (auto& entry : *fstab) {
+ if (!fs_mgr_wants_overlayfs(&entry)) continue;
+ std::string new_mount_point(fs_mgr_mount_point(entry.mount_point.c_str()));
if (mount_point && (new_mount_point != mount_point)) continue;
if (std::find(verity.begin(), verity.end(), android::base::Basename(new_mount_point)) !=
verity.end()) {
@@ -569,10 +560,9 @@
if (std::find(verity.begin(), verity.end(), "system") != verity.end()) return mounts;
// confirm that fstab is missing system
- if (fs_mgr_get_entry_for_mount_point(const_cast<struct fstab*>(fstab), "/")) {
- return mounts;
- }
- if (fs_mgr_get_entry_for_mount_point(const_cast<struct fstab*>(fstab), "/system")) {
+ if (std::find_if(fstab->begin(), fstab->end(), [](const auto& entry) {
+ return entry.mount_point == "/" || entry.mount_point == "/system ";
+ }) != fstab->end()) {
return mounts;
}
@@ -594,26 +584,20 @@
PERROR << "create " << kScratchMountPoint;
}
- std::unique_ptr<fstab, decltype(&fs_mgr_free_fstab)> local_fstab(
- static_cast<fstab*>(calloc(1, sizeof(fstab))), fs_mgr_free_fstab);
- auto fsrec = static_cast<fstab_rec*>(calloc(1, sizeof(fstab_rec)));
- local_fstab->num_entries = 1;
- local_fstab->recs = fsrec;
- fsrec->blk_device = strdup(device_path.c_str());
- fsrec->mount_point = strdup(kScratchMountPoint.c_str());
- fsrec->fs_type = strdup(mnt_type.c_str());
- fsrec->flags = MS_RELATIME;
- fsrec->fs_options = strdup("");
+ FstabEntry entry;
+ entry.blk_device = device_path;
+ entry.mount_point = kScratchMountPoint;
+ entry.fs_type = mnt_type;
+ entry.flags = MS_RELATIME;
auto save_errno = errno;
- auto mounted = fs_mgr_do_mount_one(fsrec) == 0;
+ auto mounted = fs_mgr_do_mount_one(entry) == 0;
if (!mounted) {
- free(fsrec->fs_type);
if (mnt_type == "f2fs") {
- fsrec->fs_type = strdup("ext4");
+ entry.fs_type = "ext4";
} else {
- fsrec->fs_type = strdup("f2fs");
+ entry.fs_type = "f2fs";
}
- mounted = fs_mgr_do_mount_one(fsrec) == 0;
+ mounted = fs_mgr_do_mount_one(entry) == 0;
if (!mounted) save_errno = errno;
}
setfscreatecon(nullptr);
@@ -635,88 +619,20 @@
std::string fs_mgr_overlayfs_scratch_device() {
if (!scratch_device_cache.empty()) return scratch_device_cache;
- auto& dm = DeviceMapper::Instance();
- const auto partition_name = android::base::Basename(kScratchMountPoint);
- std::string path;
- if (!dm.GetDmDevicePathByName(partition_name, &path)) return "";
+ // Is this a multiple super device (retrofit)?
+ auto slot_number = fs_mgr_overlayfs_slot_number();
+ auto super_device = fs_mgr_overlayfs_super_device(slot_number);
+ auto path = fs_mgr_overlayfs_super_device(slot_number == 0);
+ if (super_device == path) {
+ // Create from within single super device;
+ auto& dm = DeviceMapper::Instance();
+ const auto partition_name = android::base::Basename(kScratchMountPoint);
+ if (!dm.GetDmDevicePathByName(partition_name, &path)) return "";
+ }
return scratch_device_cache = path;
}
-// Create and mount kScratchMountPoint storage if we have logical partitions
-bool fs_mgr_overlayfs_setup_scratch(const fstab* fstab, bool* change) {
- if (fs_mgr_overlayfs_already_mounted(kScratchMountPoint, false)) return true;
- auto mnt_type = fs_mgr_overlayfs_scratch_mount_type();
- auto scratch_device = fs_mgr_overlayfs_scratch_device();
- auto partition_create = !fs_mgr_rw_access(scratch_device);
- auto slot_number = fs_mgr_overlayfs_slot_number();
- auto super_device = fs_mgr_overlayfs_super_device(slot_number);
- if (!fs_mgr_rw_access(super_device)) return false;
- if (!fs_mgr_overlayfs_has_logical(fstab)) return false;
- auto builder = MetadataBuilder::New(super_device, slot_number);
- if (!builder) {
- LERROR << "open " << super_device << " metadata";
- return false;
- }
- const auto partition_name = android::base::Basename(kScratchMountPoint);
- auto partition = builder->FindPartition(partition_name);
- auto partition_exists = partition != nullptr;
- auto changed = false;
- if (!partition_exists) {
- partition = builder->AddPartition(partition_name, LP_PARTITION_ATTR_NONE);
- if (!partition) {
- LERROR << "create " << partition_name;
- return false;
- }
- changed = true;
- }
- // Take half of free space, minimum 512MB or free space - 256KB margin.
- static constexpr auto kMinimumSize = uint64_t(512 * 1024 * 1024);
- static constexpr auto kMarginSize = uint64_t(256 * 1024);
- if (partition->size() < kMinimumSize) {
- auto partition_size =
- builder->AllocatableSpace() - builder->UsedSpace() + partition->size();
- if ((partition_size > kMinimumSize) || !partition->size()) {
- partition_size = std::max(std::min(kMinimumSize, partition_size - kMarginSize),
- partition_size / 2);
- if (partition_size > partition->size()) {
- if (!builder->ResizePartition(partition, partition_size)) {
- LERROR << "resize " << partition_name;
- return false;
- }
- if (!partition_create) DestroyLogicalPartition(partition_name, 10s);
- changed = true;
- partition_exists = false;
- }
- }
- }
- // land the update back on to the partition
- if (changed) {
- auto metadata = builder->Export();
- if (!metadata || !UpdatePartitionTable(super_device, *metadata.get(), slot_number)) {
- LERROR << "add partition " << partition_name;
- return false;
- }
-
- if (change) *change = true;
- }
-
- if (changed || partition_create) {
- if (!CreateLogicalPartition(super_device, slot_number, partition_name, true, 0s,
- &scratch_device))
- return false;
-
- if (change) *change = true;
- }
-
- if (partition_exists) {
- if (fs_mgr_overlayfs_mount_scratch(scratch_device, mnt_type)) {
- if (change) *change = true;
- return true;
- }
- // partition existed, but was not initialized;
- errno = 0;
- }
-
+bool fs_mgr_overlayfs_make_scratch(const std::string& scratch_device, const std::string& mnt_type) {
// Force mkfs by design for overlay support of adb remount, simplify and
// thus do not rely on fsck to correct problems that could creep in.
auto command = ""s;
@@ -735,6 +651,114 @@
LERROR << "make " << mnt_type << " filesystem on " << scratch_device << " return=" << ret;
return false;
}
+ return true;
+}
+
+bool fs_mgr_overlayfs_create_scratch(const Fstab& fstab, std::string* scratch_device,
+ bool* partition_exists, bool* change) {
+ *scratch_device = fs_mgr_overlayfs_scratch_device();
+ *partition_exists = fs_mgr_rw_access(*scratch_device);
+ auto partition_create = !*partition_exists;
+ // Do we need to create a logical "scratch" partition?
+ if (!partition_create && android::base::StartsWith(*scratch_device, kPhysicalDevice)) {
+ return true;
+ }
+ auto slot_number = fs_mgr_overlayfs_slot_number();
+ auto super_device = fs_mgr_overlayfs_super_device(slot_number);
+ if (!fs_mgr_rw_access(super_device)) return false;
+ if (!fs_mgr_overlayfs_has_logical(fstab)) return false;
+ auto builder = MetadataBuilder::New(super_device, slot_number);
+ if (!builder) {
+ LERROR << "open " << super_device << " metadata";
+ return false;
+ }
+ const auto partition_name = android::base::Basename(kScratchMountPoint);
+ auto partition = builder->FindPartition(partition_name);
+ *partition_exists = partition != nullptr;
+ auto changed = false;
+ if (!*partition_exists) {
+ partition = builder->AddPartition(partition_name, LP_PARTITION_ATTR_NONE);
+ if (!partition) {
+ LERROR << "create " << partition_name;
+ return false;
+ }
+ changed = true;
+ }
+ // Take half of free space, minimum 512MB or maximum free - margin.
+ static constexpr auto kMinimumSize = uint64_t(512 * 1024 * 1024);
+ if (partition->size() < kMinimumSize) {
+ auto partition_size =
+ builder->AllocatableSpace() - builder->UsedSpace() + partition->size();
+ if ((partition_size > kMinimumSize) || !partition->size()) {
+ // Leave some space for free space jitter of a few erase
+ // blocks, in case they are needed for any individual updates
+ // to any other partition that needs to be flashed while
+ // overlayfs is in force. Of course if margin_size is not
+ // enough could normally get a flash failure, so
+ // ResizePartition() will delete the scratch partition in
+ // order to fulfill. Deleting scratch will destroy all of
+ // the adb remount overrides :-( .
+ auto margin_size = uint64_t(3 * 256 * 1024);
+ BlockDeviceInfo info;
+ if (builder->GetBlockDeviceInfo(partition_name, &info)) {
+ margin_size = 3 * info.logical_block_size;
+ }
+ partition_size = std::max(std::min(kMinimumSize, partition_size - margin_size),
+ partition_size / 2);
+ if (partition_size > partition->size()) {
+ if (!builder->ResizePartition(partition, partition_size)) {
+ LERROR << "resize " << partition_name;
+ return false;
+ }
+ if (!partition_create) DestroyLogicalPartition(partition_name, 10s);
+ changed = true;
+ *partition_exists = false;
+ }
+ }
+ }
+ // land the update back on to the partition
+ if (changed) {
+ auto metadata = builder->Export();
+ if (!metadata || !UpdatePartitionTable(super_device, *metadata.get(), slot_number)) {
+ LERROR << "add partition " << partition_name;
+ return false;
+ }
+
+ if (change) *change = true;
+ }
+
+ if (changed || partition_create) {
+ if (!CreateLogicalPartition(super_device, slot_number, partition_name, true, 0s,
+ scratch_device))
+ return false;
+
+ if (change) *change = true;
+ }
+ return true;
+}
+
+// Create and mount kScratchMountPoint storage if we have logical partitions
+bool fs_mgr_overlayfs_setup_scratch(const Fstab& fstab, bool* change) {
+ if (fs_mgr_overlayfs_already_mounted(kScratchMountPoint, false)) return true;
+
+ std::string scratch_device;
+ bool partition_exists;
+ if (!fs_mgr_overlayfs_create_scratch(fstab, &scratch_device, &partition_exists, change)) {
+ return false;
+ }
+
+ // If the partition exists, assume first that it can be mounted.
+ auto mnt_type = fs_mgr_overlayfs_scratch_mount_type();
+ if (partition_exists) {
+ if (fs_mgr_overlayfs_mount_scratch(scratch_device, mnt_type)) {
+ if (change) *change = true;
+ return true;
+ }
+ // partition existed, but was not initialized; fall through to make it.
+ errno = 0;
+ }
+
+ if (!fs_mgr_overlayfs_make_scratch(scratch_device, mnt_type)) return false;
if (change) *change = true;
@@ -744,6 +768,7 @@
bool fs_mgr_overlayfs_scratch_can_be_mounted(const std::string& scratch_device) {
if (scratch_device.empty()) return false;
if (fs_mgr_overlayfs_already_mounted(kScratchMountPoint, false)) return false;
+ if (android::base::StartsWith(scratch_device, kPhysicalDevice)) return true;
if (fs_mgr_rw_access(scratch_device)) return true;
auto slot_number = fs_mgr_overlayfs_slot_number();
auto super_device = fs_mgr_overlayfs_super_device(slot_number);
@@ -753,14 +778,20 @@
return builder->FindPartition(android::base::Basename(kScratchMountPoint)) != nullptr;
}
+bool fs_mgr_overlayfs_invalid() {
+ if (fs_mgr_overlayfs_valid() == OverlayfsValidResult::kNotSupported) return true;
+
+ // in recovery or fastbootd mode, not allowed!
+ if (fs_mgr_access("/system/bin/recovery")) return true;
+
+ return false;
+}
+
} // namespace
-bool fs_mgr_overlayfs_mount_all(fstab* fstab) {
+bool fs_mgr_overlayfs_mount_all(Fstab* fstab) {
auto ret = false;
-
- if (fs_mgr_overlayfs_valid() == OverlayfsValidResult::kNotSupported) return ret;
-
- if (!fstab) return ret;
+ if (fs_mgr_overlayfs_invalid()) return ret;
auto scratch_can_be_mounted = true;
for (const auto& mount_point : fs_mgr_candidate_list(fstab)) {
@@ -773,8 +804,7 @@
fs_mgr_overlayfs_mount_scratch(scratch_device,
fs_mgr_overlayfs_scratch_mount_type()) &&
!fs_mgr_access(kScratchMountPoint + kOverlayTopDir)) {
- umount2(kScratchMountPoint.c_str(), MNT_DETACH);
- rmdir(kScratchMountPoint.c_str());
+ fs_mgr_overlayfs_umount_scratch();
}
}
if (fs_mgr_overlayfs_mount(mount_point)) ret = true;
@@ -782,17 +812,12 @@
return ret;
}
-bool fs_mgr_overlayfs_mount_all(const std::vector<const fstab_rec*>& fsrecs) {
- std::vector<fstab_rec> recs;
- for (const auto& rec : fsrecs) recs.push_back(*rec);
- fstab fstab = {static_cast<int>(fsrecs.size()), &recs[0]};
- return fs_mgr_overlayfs_mount_all(&fstab);
-}
+std::vector<std::string> fs_mgr_overlayfs_required_devices(Fstab* fstab) {
+ if (fs_mgr_overlayfs_invalid()) return {};
-std::vector<std::string> fs_mgr_overlayfs_required_devices(fstab* fstab) {
- if (fs_mgr_overlayfs_valid() == OverlayfsValidResult::kNotSupported) return {};
-
- if (fs_mgr_get_entry_for_mount_point(const_cast<struct fstab*>(fstab), kScratchMountPoint)) {
+ if (std::find_if(fstab->begin(), fstab->end(), [](const auto& entry) {
+ return entry.mount_point == kScratchMountPoint;
+ }) != fstab->end()) {
return {};
}
@@ -805,14 +830,6 @@
return {};
}
-std::vector<std::string> fs_mgr_overlayfs_required_devices(
- const std::vector<const fstab_rec*>& fsrecs) {
- std::vector<fstab_rec> recs;
- for (const auto& rec : fsrecs) recs.push_back(*rec);
- fstab fstab = {static_cast<int>(fsrecs.size()), &recs[0]};
- return fs_mgr_overlayfs_required_devices(&fstab);
-}
-
// Returns false if setup not permitted, errno set to last error.
// If something is altered, set *change.
bool fs_mgr_overlayfs_setup(const char* backing, const char* mount_point, bool* change) {
@@ -825,10 +842,13 @@
return ret;
}
- std::unique_ptr<fstab, decltype(&fs_mgr_free_fstab)> fstab(fs_mgr_read_fstab_default(),
- fs_mgr_free_fstab);
- if (!fstab) return ret;
- auto mounts = fs_mgr_candidate_list(fstab.get(), fs_mgr_mount_point(mount_point));
+ auto save_errno = errno;
+ Fstab fstab;
+ if (!ReadDefaultFstab(&fstab)) {
+ return false;
+ }
+ errno = save_errno;
+ auto mounts = fs_mgr_candidate_list(&fstab, fs_mgr_mount_point(mount_point));
if (mounts.empty()) return ret;
std::string dir;
@@ -836,18 +856,23 @@
if (backing && backing[0] && (overlay_mount_point != backing)) continue;
if (overlay_mount_point == kScratchMountPoint) {
if (!fs_mgr_rw_access(fs_mgr_overlayfs_super_device(fs_mgr_overlayfs_slot_number())) ||
- !fs_mgr_overlayfs_has_logical(fstab.get())) {
+ !fs_mgr_overlayfs_has_logical(fstab)) {
continue;
}
- if (!fs_mgr_overlayfs_setup_scratch(fstab.get(), change)) continue;
+ if (!fs_mgr_overlayfs_setup_scratch(fstab, change)) continue;
} else {
- if (!fs_mgr_get_entry_for_mount_point(fstab.get(), overlay_mount_point)) continue;
+ if (std::find_if(fstab.begin(), fstab.end(), [&overlay_mount_point](const auto& entry) {
+ return entry.mount_point == overlay_mount_point;
+ }) == fstab.end()) {
+ continue;
+ }
}
dir = overlay_mount_point;
break;
}
if (dir.empty()) {
- errno = ESRCH;
+ if (change && *change) errno = ESRCH;
+ if (errno == EPERM) errno = save_errno;
return ret;
}
@@ -867,6 +892,7 @@
auto ret = true;
// If scratch exists, but is not mounted, lets gain access to clean
// specific override entries.
+ auto mount_scratch = false;
if ((mount_point != nullptr) && !fs_mgr_overlayfs_already_mounted(kScratchMountPoint, false)) {
auto scratch_device = fs_mgr_overlayfs_scratch_device();
if (scratch_device.empty()) {
@@ -876,7 +902,8 @@
CreateLogicalPartition(super_device, slot_number, partition_name, true, 0s,
&scratch_device);
}
- fs_mgr_overlayfs_mount_scratch(scratch_device, fs_mgr_overlayfs_scratch_mount_type());
+ mount_scratch = fs_mgr_overlayfs_mount_scratch(scratch_device,
+ fs_mgr_overlayfs_scratch_mount_type());
}
for (const auto& overlay_mount_point : kOverlayMountPoints) {
ret &= fs_mgr_overlayfs_teardown_one(overlay_mount_point, mount_point ?: "", change);
@@ -894,9 +921,24 @@
PERROR << "teardown";
ret = false;
}
+ if (mount_scratch) fs_mgr_overlayfs_umount_scratch();
+
return ret;
}
+bool fs_mgr_overlayfs_is_setup() {
+ if (fs_mgr_overlayfs_already_mounted(kScratchMountPoint, false)) return true;
+ Fstab fstab;
+ if (!ReadDefaultFstab(&fstab)) {
+ return false;
+ }
+ if (fs_mgr_overlayfs_invalid()) return false;
+ for (const auto& mount_point : fs_mgr_candidate_list(&fstab)) {
+ if (fs_mgr_overlayfs_already_mounted(mount_point)) return true;
+ }
+ return false;
+}
+
#endif // ALLOW_ADBD_DISABLE_VERITY != 0
bool fs_mgr_has_shared_blocks(const std::string& mount_point, const std::string& dev) {
diff --git a/fs_mgr/fs_mgr_priv.h b/fs_mgr/fs_mgr_priv.h
index 23a92d3..7d1159b 100644
--- a/fs_mgr/fs_mgr_priv.h
+++ b/fs_mgr/fs_mgr_priv.h
@@ -21,8 +21,9 @@
#include <string>
#include <android-base/logging.h>
+#include <fs_mgr.h>
+#include <fstab/fstab.h>
-#include "fs_mgr.h"
#include "fs_mgr_priv_boot_config.h"
/* The CHECK() in logging.h will use program invocation name as the tag.
@@ -117,6 +118,10 @@
#define MF_LOGICAL 0x10000000
#define MF_CHECKPOINT_BLK 0x20000000
#define MF_CHECKPOINT_FS 0x40000000
+#define MF_FIRST_STAGE_MOUNT \
+ 0x80000000
+#define MF_SLOTSELECT_OTHER \
+ 0x100000000
// clang-format on
#define DM_BUF_SIZE 4096
@@ -129,11 +134,11 @@
const std::chrono::milliseconds relative_timeout,
FileWaitMode wait_mode = FileWaitMode::Exists);
-int fs_mgr_set_blk_ro(const char* blockdev);
-bool fs_mgr_update_for_slotselect(fstab* fstab);
+bool fs_mgr_set_blk_ro(const std::string& blockdev);
+bool fs_mgr_update_for_slotselect(Fstab* fstab);
bool fs_mgr_is_device_unlocked();
const std::string& get_android_dt_dir();
bool is_dt_compatible();
-int load_verity_state(fstab_rec* fstab, int* mode);
+int load_verity_state(const FstabEntry& entry, int* mode);
#endif /* __CORE_FS_MGR_PRIV_H */
diff --git a/fs_mgr/fs_mgr_slotselect.cpp b/fs_mgr/fs_mgr_slotselect.cpp
index 3b01d0e..3cb718c 100644
--- a/fs_mgr/fs_mgr_slotselect.cpp
+++ b/fs_mgr/fs_mgr_slotselect.cpp
@@ -21,6 +21,19 @@
#include "fs_mgr.h"
#include "fs_mgr_priv.h"
+// https://source.android.com/devices/tech/ota/ab/ab_implement#partitions
+// All partitions that are A/B-ed should be named as follows (slots are always
+// named a, b, etc.): boot_a, boot_b, system_a, system_b, vendor_a, vendor_b.
+static std::string other_suffix(const std::string& slot_suffix) {
+ if (slot_suffix == "_a") {
+ return "_b";
+ }
+ if (slot_suffix == "_b") {
+ return "_a";
+ }
+ return "";
+}
+
// Returns "_a" or "_b" based on androidboot.slot_suffix in kernel cmdline, or an empty string
// if that parameter does not exist.
std::string fs_mgr_get_slot_suffix() {
@@ -31,36 +44,24 @@
}
// Updates |fstab| for slot_suffix. Returns true on success, false on error.
-bool fs_mgr_update_for_slotselect(struct fstab *fstab) {
- int n;
+bool fs_mgr_update_for_slotselect(Fstab* fstab) {
std::string ab_suffix;
- for (n = 0; n < fstab->num_entries; n++) {
- fstab_rec& record = fstab->recs[n];
- if (record.fs_mgr_flags & MF_SLOTSELECT) {
- if (ab_suffix.empty()) {
- ab_suffix = fs_mgr_get_slot_suffix();
- // Return false if failed to get ab_suffix when MF_SLOTSELECT is specified.
- if (ab_suffix.empty()) return false;
- }
-
- char* new_blk_device;
- if (asprintf(&new_blk_device, "%s%s", record.blk_device, ab_suffix.c_str()) <= 0) {
- return false;
- }
- free(record.blk_device);
- record.blk_device = new_blk_device;
-
- char* new_partition_name;
- if (record.logical_partition_name) {
- if (asprintf(&new_partition_name, "%s%s", record.logical_partition_name,
- ab_suffix.c_str()) <= 0) {
- return false;
- }
- free(record.logical_partition_name);
- record.logical_partition_name = new_partition_name;
- }
+ for (auto& entry : *fstab) {
+ if (!entry.fs_mgr_flags.slot_select && !entry.fs_mgr_flags.slot_select_other) {
+ continue;
}
+
+ if (ab_suffix.empty()) {
+ ab_suffix = fs_mgr_get_slot_suffix();
+ // Return false if failed to get ab_suffix when MF_SLOTSELECT is specified.
+ if (ab_suffix.empty()) return false;
+ }
+
+ const auto& update_suffix =
+ entry.fs_mgr_flags.slot_select ? ab_suffix : other_suffix(ab_suffix);
+ entry.blk_device = entry.blk_device + update_suffix;
+ entry.logical_partition_name = entry.logical_partition_name + update_suffix;
}
return true;
}
diff --git a/fs_mgr/fs_mgr_verity.cpp b/fs_mgr/fs_mgr_verity.cpp
index 2727a6d..9adf8cc 100644
--- a/fs_mgr/fs_mgr_verity.cpp
+++ b/fs_mgr/fs_mgr_verity.cpp
@@ -536,8 +536,7 @@
return 0;
}
-static int compare_last_signature(struct fstab_rec *fstab, int *match)
-{
+static int compare_last_signature(const FstabEntry& entry, int* match) {
char tag[METADATA_TAG_MAX_LENGTH + 1];
int fd = -1;
int rc = -1;
@@ -549,42 +548,40 @@
*match = 1;
- if (fec_open(&f, fstab->blk_device, O_RDONLY, FEC_VERITY_DISABLE,
- FEC_DEFAULT_ROOTS) == -1) {
- PERROR << "Failed to open '" << fstab->blk_device << "'";
+ if (fec_open(&f, entry.blk_device.c_str(), O_RDONLY, FEC_VERITY_DISABLE, FEC_DEFAULT_ROOTS) ==
+ -1) {
+ PERROR << "Failed to open '" << entry.blk_device << "'";
return rc;
}
// read verity metadata
if (fec_verity_get_metadata(f, &verity) == -1) {
- PERROR << "Failed to get verity metadata '" << fstab->blk_device << "'";
+ PERROR << "Failed to get verity metadata '" << entry.blk_device << "'";
goto out;
}
SHA256(verity.signature, sizeof(verity.signature), curr);
- if (snprintf(tag, sizeof(tag), VERITY_LASTSIG_TAG "_%s",
- basename(fstab->mount_point)) >= (int)sizeof(tag)) {
- LERROR << "Metadata tag name too long for " << fstab->mount_point;
+ if (snprintf(tag, sizeof(tag), VERITY_LASTSIG_TAG "_%s", basename(entry.mount_point.c_str())) >=
+ (int)sizeof(tag)) {
+ LERROR << "Metadata tag name too long for " << entry.mount_point;
goto out;
}
- if (metadata_find(fstab->verity_loc, tag, SHA256_DIGEST_LENGTH,
- &offset) < 0) {
+ if (metadata_find(entry.verity_loc.c_str(), tag, SHA256_DIGEST_LENGTH, &offset) < 0) {
goto out;
}
- fd = TEMP_FAILURE_RETRY(open(fstab->verity_loc, O_RDWR | O_SYNC | O_CLOEXEC));
+ fd = TEMP_FAILURE_RETRY(open(entry.verity_loc.c_str(), O_RDWR | O_SYNC | O_CLOEXEC));
if (fd == -1) {
- PERROR << "Failed to open " << fstab->verity_loc;
+ PERROR << "Failed to open " << entry.verity_loc;
goto out;
}
- if (TEMP_FAILURE_RETRY(pread64(fd, prev, sizeof(prev),
- offset)) != sizeof(prev)) {
- PERROR << "Failed to read " << sizeof(prev) << " bytes from "
- << fstab->verity_loc << " offset " << offset;
+ if (TEMP_FAILURE_RETRY(pread64(fd, prev, sizeof(prev), offset)) != sizeof(prev)) {
+ PERROR << "Failed to read " << sizeof(prev) << " bytes from " << entry.verity_loc
+ << " offset " << offset;
goto out;
}
@@ -594,8 +591,8 @@
/* update current signature hash */
if (TEMP_FAILURE_RETRY(pwrite64(fd, curr, sizeof(curr),
offset)) != sizeof(curr)) {
- PERROR << "Failed to write " << sizeof(curr) << " bytes to "
- << fstab->verity_loc << " offset " << offset;
+ PERROR << "Failed to write " << sizeof(curr) << " bytes to " << entry.verity_loc
+ << " offset " << offset;
goto out;
}
}
@@ -607,28 +604,23 @@
return rc;
}
-static int get_verity_state_offset(struct fstab_rec *fstab, off64_t *offset)
-{
+static int get_verity_state_offset(const FstabEntry& entry, off64_t* offset) {
char tag[METADATA_TAG_MAX_LENGTH + 1];
- if (snprintf(tag, sizeof(tag), VERITY_STATE_TAG "_%s",
- basename(fstab->mount_point)) >= (int)sizeof(tag)) {
- LERROR << "Metadata tag name too long for " << fstab->mount_point;
+ if (snprintf(tag, sizeof(tag), VERITY_STATE_TAG "_%s", basename(entry.mount_point.c_str())) >=
+ (int)sizeof(tag)) {
+ LERROR << "Metadata tag name too long for " << entry.mount_point;
return -1;
}
- return metadata_find(fstab->verity_loc, tag, sizeof(struct verity_state),
- offset);
+ return metadata_find(entry.verity_loc.c_str(), tag, sizeof(struct verity_state), offset);
}
-int load_verity_state(struct fstab_rec* fstab, int* mode) {
- int match = 0;
- off64_t offset = 0;
-
- /* unless otherwise specified, use EIO mode */
+int load_verity_state(const FstabEntry& entry, int* mode) {
+ // unless otherwise specified, use EIO mode.
*mode = VERITY_MODE_EIO;
- /* use the kernel parameter if set */
+ // use the kernel parameter if set.
std::string veritymode;
if (fs_mgr_get_boot_config("veritymode", &veritymode)) {
if (veritymode == "enforcing") {
@@ -637,7 +629,8 @@
return 0;
}
- if (get_verity_state_offset(fstab, &offset) < 0) {
+ off64_t offset = 0;
+ if (get_verity_state_offset(entry, &offset) < 0) {
/* fall back to stateless behavior */
return 0;
}
@@ -645,16 +638,17 @@
if (was_verity_restart()) {
/* device was restarted after dm-verity detected a corrupted
* block, so use EIO mode */
- return write_verity_state(fstab->verity_loc, offset, *mode);
+ return write_verity_state(entry.verity_loc.c_str(), offset, *mode);
}
- if (!compare_last_signature(fstab, &match) && !match) {
+ int match = 0;
+ if (!compare_last_signature(entry, &match) && !match) {
/* partition has been reflashed, reset dm-verity state */
*mode = VERITY_MODE_DEFAULT;
- return write_verity_state(fstab->verity_loc, offset, *mode);
+ return write_verity_state(entry.verity_loc.c_str(), offset, *mode);
}
- return read_verity_state(fstab->verity_loc, offset, mode);
+ return read_verity_state(entry.verity_loc.c_str(), offset, mode);
}
// Update the verity table using the actual block device path.
@@ -716,8 +710,7 @@
// prepares the verity enabled (MF_VERIFY / MF_VERIFYATBOOT) fstab record for
// mount. The 'wait_for_verity_dev' parameter makes this function wait for the
// verity device to get created before return
-int fs_mgr_setup_verity(struct fstab_rec *fstab, bool wait_for_verity_dev)
-{
+int fs_mgr_setup_verity(FstabEntry* entry, bool wait_for_verity_dev) {
int retval = FS_MGR_SETUP_VERITY_FAIL;
int fd = -1;
std::string verity_blk_name;
@@ -725,20 +718,20 @@
struct fec_verity_metadata verity;
struct verity_table_params params = { .table = NULL };
- const std::string mount_point(basename(fstab->mount_point));
+ const std::string mount_point(basename(entry->mount_point.c_str()));
bool verified_at_boot = false;
android::dm::DeviceMapper& dm = android::dm::DeviceMapper::Instance();
- if (fec_open(&f, fstab->blk_device, O_RDONLY, FEC_VERITY_DISABLE,
- FEC_DEFAULT_ROOTS) < 0) {
- PERROR << "Failed to open '" << fstab->blk_device << "'";
+ if (fec_open(&f, entry->blk_device.c_str(), O_RDONLY, FEC_VERITY_DISABLE, FEC_DEFAULT_ROOTS) <
+ 0) {
+ PERROR << "Failed to open '" << entry->blk_device << "'";
return retval;
}
// read verity metadata
if (fec_verity_get_metadata(f, &verity) < 0) {
- PERROR << "Failed to get verity metadata '" << fstab->blk_device << "'";
+ PERROR << "Failed to get verity metadata '" << entry->blk_device << "'";
// Allow verity disabled when the device is unlocked without metadata
if (fs_mgr_is_device_unlocked()) {
retval = FS_MGR_SETUP_VERITY_SKIPPED;
@@ -760,9 +753,9 @@
params.ecc.valid = false;
}
- params.ecc_dev = fstab->blk_device;
+ params.ecc_dev = entry->blk_device.c_str();
- if (load_verity_state(fstab, ¶ms.mode) < 0) {
+ if (load_verity_state(*entry, ¶ms.mode) < 0) {
/* if accessing or updating the state failed, switch to the default
* safe mode. This makes sure the device won't end up in an endless
* restart loop, and no corrupted data will be exposed to userspace
@@ -803,8 +796,8 @@
<< " (mode " << params.mode << ")";
// Update the verity params using the actual block device path
- update_verity_table_blk_device(fstab->blk_device, ¶ms.table,
- fstab->fs_mgr_flags & MF_SLOTSELECT);
+ update_verity_table_blk_device(entry->blk_device, ¶ms.table,
+ entry->fs_mgr_flags.slot_select);
// load the verity mapping table
if (load_verity_table(dm, mount_point, verity.data_size, ¶ms, format_verity_table) == 0) {
@@ -848,31 +841,29 @@
}
// mark the underlying block device as read-only
- fs_mgr_set_blk_ro(fstab->blk_device);
+ fs_mgr_set_blk_ro(entry->blk_device);
// Verify the entire partition in one go
// If there is an error, allow it to mount as a normal verity partition.
- if (fstab->fs_mgr_flags & MF_VERIFYATBOOT) {
- LINFO << "Verifying partition " << fstab->blk_device << " at boot";
+ if (entry->fs_mgr_flags.verify_at_boot) {
+ LINFO << "Verifying partition " << entry->blk_device << " at boot";
int err = read_partition(verity_blk_name.c_str(), verity.data_size);
if (!err) {
- LINFO << "Verified verity partition "
- << fstab->blk_device << " at boot";
+ LINFO << "Verified verity partition " << entry->blk_device << " at boot";
verified_at_boot = true;
}
}
// assign the new verity block device as the block device
if (!verified_at_boot) {
- free(fstab->blk_device);
- fstab->blk_device = strdup(verity_blk_name.c_str());
+ entry->blk_device = verity_blk_name;
} else if (!dm.DeleteDevice(mount_point)) {
LERROR << "Failed to remove verity device " << mount_point.c_str();
goto out;
}
// make sure we've set everything up properly
- if (wait_for_verity_dev && !fs_mgr_wait_for_file(fstab->blk_device, 1s)) {
+ if (wait_for_verity_dev && !fs_mgr_wait_for_file(entry->blk_device, 1s)) {
goto out;
}
diff --git a/fs_mgr/include/fs_mgr.h b/fs_mgr/include/fs_mgr.h
index 5dabe76..814ba46 100644
--- a/fs_mgr/include/fs_mgr.h
+++ b/fs_mgr/include/fs_mgr.h
@@ -50,10 +50,6 @@
MOUNT_MODE_LATE = 2
};
-// Callback function for verity status
-typedef void fs_mgr_verity_state_callback(fstab_rec* fstab, const char* mount_point, int mode,
- int status);
-
#define FS_MGR_MNTALL_DEV_IS_METADATA_ENCRYPTED 7
#define FS_MGR_MNTALL_DEV_NEEDS_METADATA_ENCRYPTION 6
#define FS_MGR_MNTALL_DEV_FILE_ENCRYPTED 5
@@ -63,7 +59,8 @@
#define FS_MGR_MNTALL_DEV_NOT_ENCRYPTED 1
#define FS_MGR_MNTALL_DEV_NOT_ENCRYPTABLE 0
#define FS_MGR_MNTALL_FAIL (-1)
-int fs_mgr_mount_all(fstab* fstab, int mount_mode);
+// fs_mgr_mount_all() updates fstab entries that reference device-mapper.
+int fs_mgr_mount_all(Fstab* fstab, int mount_mode);
#define FS_MGR_DOMNT_FAILED (-1)
#define FS_MGR_DOMNT_BUSY (-2)
@@ -72,22 +69,26 @@
int fs_mgr_do_mount(fstab* fstab, const char* n_name, char* n_blk_device, char* tmp_mount_point);
int fs_mgr_do_mount(fstab* fstab, const char* n_name, char* n_blk_device, char* tmp_mount_point,
bool need_cp);
+int fs_mgr_do_mount_one(const FstabEntry& entry);
int fs_mgr_do_mount_one(fstab_rec* rec);
int fs_mgr_do_tmpfs_mount(const char *n_name);
fstab_rec const* fs_mgr_get_crypt_entry(fstab const* fstab);
void fs_mgr_get_crypt_info(fstab* fstab, char* key_loc, char* real_blk_device, size_t size);
bool fs_mgr_load_verity_state(int* mode);
-bool fs_mgr_update_verity_state(std::function<fs_mgr_verity_state_callback> callback);
-int fs_mgr_swapon_all(struct fstab *fstab);
+bool fs_mgr_update_verity_state(
+ std::function<void(const std::string& mount_point, int mode)> callback);
+bool fs_mgr_swapon_all(const Fstab& fstab);
+bool fs_mgr_update_logical_partition(FstabEntry* entry);
bool fs_mgr_update_logical_partition(struct fstab_rec* rec);
-int fs_mgr_do_format(fstab_rec* fstab, bool reserve_footer);
+int fs_mgr_do_format(const FstabEntry& entry, bool reserve_footer);
+int fs_mgr_do_format(fstab_rec* rec, bool reserve_footer);
#define FS_MGR_SETUP_VERITY_SKIPPED (-3)
#define FS_MGR_SETUP_VERITY_DISABLED (-2)
#define FS_MGR_SETUP_VERITY_FAIL (-1)
#define FS_MGR_SETUP_VERITY_SUCCESS 0
-int fs_mgr_setup_verity(fstab_rec* fstab, bool wait_for_verity_dev);
+int fs_mgr_setup_verity(FstabEntry* fstab, bool wait_for_verity_dev);
// Return the name of the super partition if it exists. If a slot number is
// specified, the super partition for the corresponding metadata slot will be
diff --git a/fs_mgr/include/fs_mgr_dm_linear.h b/fs_mgr/include/fs_mgr_dm_linear.h
index 66abfca..f065071 100644
--- a/fs_mgr/include/fs_mgr_dm_linear.h
+++ b/fs_mgr/include/fs_mgr_dm_linear.h
@@ -43,7 +43,7 @@
// Create block devices for all logical partitions in the given metadata. The
// metadata must have been read from the current slot.
-bool CreateLogicalPartitions(const LpMetadata& metadata);
+bool CreateLogicalPartitions(const LpMetadata& metadata, const std::string& block_device);
// Create block devices for all logical partitions. This is a convenience
// method for ReadMetadata and CreateLogicalPartitions.
diff --git a/fs_mgr/include/fs_mgr_overlayfs.h b/fs_mgr/include/fs_mgr_overlayfs.h
index deaf4cb..4bf2238 100644
--- a/fs_mgr/include/fs_mgr_overlayfs.h
+++ b/fs_mgr/include/fs_mgr_overlayfs.h
@@ -21,14 +21,12 @@
#include <string>
#include <vector>
-bool fs_mgr_overlayfs_mount_all(fstab* fstab);
-bool fs_mgr_overlayfs_mount_all(const std::vector<const fstab_rec*>& fstab);
-std::vector<std::string> fs_mgr_overlayfs_required_devices(fstab* fstab);
-std::vector<std::string> fs_mgr_overlayfs_required_devices(
- const std::vector<const fstab_rec*>& fstab);
+bool fs_mgr_overlayfs_mount_all(Fstab* fstab);
+std::vector<std::string> fs_mgr_overlayfs_required_devices(Fstab* fstab);
bool fs_mgr_overlayfs_setup(const char* backing = nullptr, const char* mount_point = nullptr,
bool* change = nullptr);
bool fs_mgr_overlayfs_teardown(const char* mount_point = nullptr, bool* change = nullptr);
+bool fs_mgr_overlayfs_is_setup();
bool fs_mgr_has_shared_blocks(const std::string& mount_point, const std::string& dev);
std::string fs_mgr_get_context(const std::string& mount_point);
diff --git a/fs_mgr/include_fstab/fstab/fstab.h b/fs_mgr/include_fstab/fstab/fstab.h
index bb40511..0997254 100644
--- a/fs_mgr/include_fstab/fstab/fstab.h
+++ b/fs_mgr/include_fstab/fstab/fstab.h
@@ -14,16 +14,17 @@
* limitations under the License.
*/
-#ifndef __CORE_FS_TAB_H
-#define __CORE_FS_TAB_H
+#pragma once
#include <linux/dm-ioctl.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
+#include <sys/types.h>
#include <set>
#include <string>
+#include <vector>
/*
* The entries must be kept in the same order as they were seen in the fstab.
@@ -42,21 +43,21 @@
char* fs_type;
unsigned long flags;
char* fs_options;
- int fs_mgr_flags;
+ uint64_t fs_mgr_flags;
char* key_loc;
char* key_dir;
char* verity_loc;
- long long length;
+ off64_t length;
char* label;
int partnum;
int swap_prio;
int max_comp_streams;
- unsigned int zram_size;
- uint64_t reserved_size;
- unsigned int file_contents_mode;
- unsigned int file_names_mode;
- unsigned int erase_blk_size;
- unsigned int logical_blk_size;
+ off64_t zram_size;
+ off64_t reserved_size;
+ int file_contents_mode;
+ int file_names_mode;
+ off64_t erase_blk_size;
+ off64_t logical_blk_size;
char* sysfs_path;
};
@@ -83,6 +84,7 @@
int fs_mgr_is_formattable(const struct fstab_rec* fstab);
int fs_mgr_is_slotselect(const struct fstab_rec* fstab);
int fs_mgr_is_nofail(const struct fstab_rec* fstab);
+int fs_mgr_is_first_stage_mount(const struct fstab_rec* fstab);
int fs_mgr_is_latemount(const struct fstab_rec* fstab);
int fs_mgr_is_quota(const struct fstab_rec* fstab);
int fs_mgr_is_logical(const struct fstab_rec* fstab);
@@ -94,4 +96,94 @@
std::string fs_mgr_get_slot_suffix();
std::set<std::string> fs_mgr_get_boot_devices();
-#endif /* __CORE_FS_TAB_H */
+struct FstabEntry {
+ std::string blk_device;
+ std::string logical_partition_name;
+ std::string mount_point;
+ std::string fs_type;
+ unsigned long flags = 0;
+ std::string fs_options;
+ std::string key_loc;
+ std::string key_dir;
+ std::string verity_loc;
+ off64_t length = 0;
+ std::string label;
+ int partnum = -1;
+ int swap_prio = -1;
+ int max_comp_streams = 0;
+ off64_t zram_size = 0;
+ off64_t reserved_size = 0;
+ int file_contents_mode = 0;
+ int file_names_mode = 0;
+ off64_t erase_blk_size = 0;
+ off64_t logical_blk_size = 0;
+ std::string sysfs_path;
+ std::string vbmeta_partition;
+
+ // TODO: Remove this union once fstab_rec is deprecated. It only serves as a
+ // convenient way to convert between fstab_rec::fs_mgr_flags and these bools.
+ union {
+ uint64_t val;
+ struct {
+ // bit 0
+ bool wait : 1;
+ bool check : 1;
+ bool crypt : 1;
+ bool nonremovable : 1;
+ bool vold_managed : 1;
+ bool length : 1;
+ bool recovery_only : 1;
+ bool swap_prio : 1;
+
+ // bit 8
+ bool zram_size : 1;
+ bool verify : 1;
+ bool force_crypt : 1;
+ bool no_emulated_sd : 1; // No emulated sdcard daemon; sd card is the only external
+ // storage.
+ bool no_trim : 1;
+ bool file_encryption : 1;
+ bool formattable : 1;
+ bool slot_select : 1;
+
+ // bit 16
+ bool force_fde_or_fbe : 1;
+ bool late_mount : 1;
+ bool no_fail : 1;
+ bool verify_at_boot : 1;
+ bool max_comp_streams : 1;
+ bool reserved_size : 1;
+ bool quota : 1;
+ bool erase_blk_size : 1;
+
+ // bit 24
+ bool logical_blk_size : 1;
+ bool avb : 1;
+ bool key_directory : 1;
+ bool sysfs : 1;
+ bool logical : 1;
+ bool checkpoint_blk : 1;
+ bool checkpoint_fs : 1;
+ bool first_stage_mount : 1;
+
+ // bit 32
+ bool slot_select_other : 1;
+ };
+ } fs_mgr_flags;
+
+ bool is_encryptable() const {
+ return fs_mgr_flags.crypt || fs_mgr_flags.force_crypt || fs_mgr_flags.force_fde_or_fbe;
+ }
+};
+
+// An Fstab is a collection of FstabEntry structs.
+using Fstab = std::vector<FstabEntry>;
+
+bool ReadFstabFromFile(const std::string& path, Fstab* fstab);
+bool ReadFstabFromDt(Fstab* fstab);
+bool ReadDefaultFstab(Fstab* fstab);
+
+// Temporary conversion functions.
+FstabEntry FstabRecToFstabEntry(const fstab_rec* fstab_rec);
+Fstab LegacyFstabToFstab(const struct fstab* legacy_fstab);
+fstab* FstabToLegacyFstab(const Fstab& fstab);
diff --git a/fs_mgr/fs_mgr_avb_ops.cpp b/fs_mgr/libfs_avb/avb_ops.cpp
similarity index 93%
rename from fs_mgr/fs_mgr_avb_ops.cpp
rename to fs_mgr/libfs_avb/avb_ops.cpp
index 18efa22..f56a517 100644
--- a/fs_mgr/fs_mgr_avb_ops.cpp
+++ b/fs_mgr/libfs_avb/avb_ops.cpp
@@ -22,7 +22,7 @@
* SOFTWARE.
*/
-#include "fs_mgr_priv_avb_ops.h"
+#include "avb_ops.h"
#include <errno.h>
#include <fcntl.h>
@@ -37,15 +37,17 @@
#include <libavb/libavb.h>
#include <utils/Compat.h>
-#include "fs_mgr.h"
#include "fs_mgr_priv.h"
using namespace std::literals;
+namespace android {
+namespace fs_mgr {
+
static AvbIOResult read_from_partition(AvbOps* ops, const char* partition, int64_t offset,
size_t num_bytes, void* buffer, size_t* out_num_read) {
return FsManagerAvbOps::GetInstanceFromAvbOps(ops)->ReadFromPartition(
- partition, offset, num_bytes, buffer, out_num_read);
+ partition, offset, num_bytes, buffer, out_num_read);
}
static AvbIOResult dummy_read_rollback_index(AvbOps* ops ATTRIBUTE_UNUSED,
@@ -58,9 +60,10 @@
}
static AvbIOResult dummy_validate_vbmeta_public_key(
- AvbOps* ops ATTRIBUTE_UNUSED, const uint8_t* public_key_data ATTRIBUTE_UNUSED,
- size_t public_key_length ATTRIBUTE_UNUSED, const uint8_t* public_key_metadata ATTRIBUTE_UNUSED,
- size_t public_key_metadata_length ATTRIBUTE_UNUSED, bool* out_is_trusted) {
+ AvbOps* ops ATTRIBUTE_UNUSED, const uint8_t* public_key_data ATTRIBUTE_UNUSED,
+ size_t public_key_length ATTRIBUTE_UNUSED,
+ const uint8_t* public_key_metadata ATTRIBUTE_UNUSED,
+ size_t public_key_metadata_length ATTRIBUTE_UNUSED, bool* out_is_trusted) {
// vbmeta public key has been checked in bootloader phase.
// In user-space, returns true to pass the check.
//
@@ -178,3 +181,6 @@
return avb_slot_verify(&avb_ops_, requested_partitions, ab_suffix.c_str(), flags,
AVB_HASHTREE_ERROR_MODE_RESTART_AND_INVALIDATE, out_data);
}
+
+} // namespace fs_mgr
+} // namespace android
diff --git a/fs_mgr/fs_mgr_priv_avb_ops.h b/fs_mgr/libfs_avb/avb_ops.h
similarity index 89%
rename from fs_mgr/fs_mgr_priv_avb_ops.h
rename to fs_mgr/libfs_avb/avb_ops.h
index 44eb1da..e6b33c2 100644
--- a/fs_mgr/fs_mgr_priv_avb_ops.h
+++ b/fs_mgr/libfs_avb/avb_ops.h
@@ -22,15 +22,14 @@
* SOFTWARE.
*/
-#ifndef __CORE_FS_MGR_PRIV_AVB_OPS_H
-#define __CORE_FS_MGR_PRIV_AVB_OPS_H
+#pragma once
-#include <map>
#include <string>
#include <libavb/libavb.h>
-#include "fs_mgr.h"
+namespace android {
+namespace fs_mgr {
// This class provides C++ bindings to interact with libavb, a small
// self-contained piece of code that's intended to be used in bootloaders.
@@ -42,7 +41,7 @@
// read and verify the metadata and store it into the out_data parameter.
// The caller MUST check the integrity of metadata against the
// androidboot.vbmeta.{hash_alg, size, digest} values from /proc/cmdline.
-// e.g., see class FsManagerAvbVerifier for more details.
+// e.g., see class AvbVerifier for more details.
//
class FsManagerAvbOps {
public:
@@ -60,6 +59,7 @@
private:
AvbOps avb_ops_;
- std::map<std::string, std::string> by_name_symlink_map_;
};
-#endif /* __CORE_FS_MGR_PRIV_AVB_OPS_H */
+
+} // namespace fs_mgr
+} // namespace android
diff --git a/fs_mgr/fs_mgr_avb.cpp b/fs_mgr/libfs_avb/fs_avb.cpp
similarity index 84%
rename from fs_mgr/fs_mgr_avb.cpp
rename to fs_mgr/libfs_avb/fs_avb.cpp
index 6f94d45..89c755e 100644
--- a/fs_mgr/fs_mgr_avb.cpp
+++ b/fs_mgr/libfs_avb/fs_avb.cpp
@@ -14,7 +14,7 @@
* limitations under the License.
*/
-#include "fs_mgr_avb.h"
+#include "fs_avb/fs_avb.h"
#include <fcntl.h>
#include <libgen.h>
@@ -35,10 +35,12 @@
#include <libavb/libavb.h>
#include <libdm/dm.h>
-#include "fs_mgr.h"
+#include "avb_ops.h"
#include "fs_mgr_priv.h"
-#include "fs_mgr_priv_avb_ops.h"
-#include "fs_mgr_priv_sha.h"
+#include "sha.h"
+
+namespace android {
+namespace fs_mgr {
static inline bool nibble_value(const char& c, uint8_t* value) {
FS_MGR_CHECK(value != nullptr);
@@ -117,14 +119,14 @@
// - androidboot.vbmeta.hash_alg
// - androidboot.vbmeta.size
// - androidboot.vbmeta.digest
-class FsManagerAvbVerifier {
+class AvbVerifier {
public:
- // The factory method to return a unique_ptr<FsManagerAvbVerifier>
- static std::unique_ptr<FsManagerAvbVerifier> Create();
+ // The factory method to return a unique_ptr<AvbVerifier>
+ static std::unique_ptr<AvbVerifier> Create();
bool VerifyVbmetaImages(const AvbSlotVerifyData& verify_data);
protected:
- FsManagerAvbVerifier() = default;
+ AvbVerifier() = default;
private:
enum HashAlgorithm {
@@ -138,10 +140,10 @@
size_t vbmeta_size_;
};
-std::unique_ptr<FsManagerAvbVerifier> FsManagerAvbVerifier::Create() {
- std::unique_ptr<FsManagerAvbVerifier> avb_verifier(new FsManagerAvbVerifier());
+std::unique_ptr<AvbVerifier> AvbVerifier::Create() {
+ std::unique_ptr<AvbVerifier> avb_verifier(new AvbVerifier());
if (!avb_verifier) {
- LERROR << "Failed to create unique_ptr<FsManagerAvbVerifier>";
+ LERROR << "Failed to create unique_ptr<AvbVerifier>";
return nullptr;
}
@@ -184,7 +186,7 @@
return avb_verifier;
}
-bool FsManagerAvbVerifier::VerifyVbmetaImages(const AvbSlotVerifyData& verify_data) {
+bool AvbVerifier::VerifyVbmetaImages(const AvbSlotVerifyData& verify_data) {
if (verify_data.num_vbmeta_images == 0) {
LERROR << "No vbmeta images";
return false;
@@ -195,10 +197,10 @@
if (hash_alg_ == kSHA256) {
std::tie(total_size, digest_matched) =
- verify_vbmeta_digest<SHA256Hasher>(verify_data, digest_);
+ verify_vbmeta_digest<SHA256Hasher>(verify_data, digest_);
} else if (hash_alg_ == kSHA512) {
std::tie(total_size, digest_matched) =
- verify_vbmeta_digest<SHA512Hasher>(verify_data, digest_);
+ verify_vbmeta_digest<SHA512Hasher>(verify_data, digest_);
}
if (total_size != vbmeta_size_) {
@@ -263,19 +265,20 @@
return table->AddTarget(std::make_unique<android::dm::DmTargetVerity>(target));
}
-static bool hashtree_dm_verity_setup(struct fstab_rec* fstab_entry,
+static bool hashtree_dm_verity_setup(FstabEntry* fstab_entry,
const AvbHashtreeDescriptor& hashtree_desc,
const std::string& salt, const std::string& root_digest,
bool wait_for_verity_dev) {
android::dm::DmTable table;
- if (!construct_verity_table(hashtree_desc, salt, root_digest, fstab_entry->blk_device, &table) ||
+ if (!construct_verity_table(hashtree_desc, salt, root_digest, fstab_entry->blk_device,
+ &table) ||
!table.valid()) {
LERROR << "Failed to construct verity table.";
return false;
}
table.set_readonly(true);
- const std::string mount_point(basename(fstab_entry->mount_point));
+ const std::string mount_point(basename(fstab_entry->mount_point.c_str()));
android::dm::DeviceMapper& dm = android::dm::DeviceMapper::Instance();
if (!dm.CreateDevice(mount_point, table)) {
LERROR << "Couldn't create verity device!";
@@ -292,8 +295,7 @@
fs_mgr_set_blk_ro(fstab_entry->blk_device);
// Updates fstab_rec->blk_device to verity device name.
- free(fstab_entry->blk_device);
- fstab_entry->blk_device = strdup(dev_path.c_str());
+ fstab_entry->blk_device = dev_path;
// Makes sure we've set everything up properly.
if (wait_for_verity_dev && !fs_mgr_wait_for_file(dev_path, 1s)) {
@@ -314,9 +316,9 @@
// Get descriptors from vbmeta_images[i].
size_t num_descriptors;
std::unique_ptr<const AvbDescriptor* [], decltype(&avb_free)> descriptors(
- avb_descriptor_get_all(verify_data.vbmeta_images[i].vbmeta_data,
- verify_data.vbmeta_images[i].vbmeta_size, &num_descriptors),
- avb_free);
+ avb_descriptor_get_all(verify_data.vbmeta_images[i].vbmeta_data,
+ verify_data.vbmeta_images[i].vbmeta_size, &num_descriptors),
+ avb_free);
if (!descriptors || num_descriptors < 1) {
continue;
@@ -329,9 +331,10 @@
continue;
}
if (desc.tag == AVB_DESCRIPTOR_TAG_HASHTREE) {
- desc_partition_name = (const uint8_t*)descriptors[j] + sizeof(AvbHashtreeDescriptor);
+ desc_partition_name =
+ (const uint8_t*)descriptors[j] + sizeof(AvbHashtreeDescriptor);
if (!avb_hashtree_descriptor_validate_and_byteswap(
- (AvbHashtreeDescriptor*)descriptors[j], out_hashtree_desc)) {
+ (AvbHashtreeDescriptor*)descriptors[j], out_hashtree_desc)) {
continue;
}
if (out_hashtree_desc->partition_name_len != partition_name.length()) {
@@ -361,12 +364,12 @@
return true;
}
-FsManagerAvbUniquePtr FsManagerAvbHandle::Open() {
+AvbUniquePtr AvbHandle::Open() {
bool is_device_unlocked = fs_mgr_is_device_unlocked();
- FsManagerAvbUniquePtr avb_handle(new FsManagerAvbHandle());
+ AvbUniquePtr avb_handle(new AvbHandle());
if (!avb_handle) {
- LERROR << "Failed to allocate FsManagerAvbHandle";
+ LERROR << "Failed to allocate AvbHandle";
return nullptr;
}
@@ -406,7 +409,7 @@
// Sets the MAJOR.MINOR for init to set it into "ro.boot.avb_version".
avb_handle->avb_version_ =
- android::base::StringPrintf("%d.%d", AVB_VERSION_MAJOR, AVB_VERSION_MINOR);
+ android::base::StringPrintf("%d.%d", AVB_VERSION_MAJOR, AVB_VERSION_MINOR);
// Checks whether FLAGS_VERIFICATION_DISABLED is set:
// - Only the top-level vbmeta struct is read.
@@ -414,18 +417,18 @@
// and AVB HASHTREE descriptor(s).
AvbVBMetaImageHeader vbmeta_header;
avb_vbmeta_image_header_to_host_byte_order(
- (AvbVBMetaImageHeader*)avb_handle->avb_slot_data_->vbmeta_images[0].vbmeta_data,
- &vbmeta_header);
- bool verification_disabled =
- ((AvbVBMetaImageFlags)vbmeta_header.flags & AVB_VBMETA_IMAGE_FLAGS_VERIFICATION_DISABLED);
+ (AvbVBMetaImageHeader*)avb_handle->avb_slot_data_->vbmeta_images[0].vbmeta_data,
+ &vbmeta_header);
+ bool verification_disabled = ((AvbVBMetaImageFlags)vbmeta_header.flags &
+ AVB_VBMETA_IMAGE_FLAGS_VERIFICATION_DISABLED);
if (verification_disabled) {
avb_handle->status_ = kAvbHandleVerificationDisabled;
} else {
// Verifies vbmeta structs against the digest passed from bootloader in kernel cmdline.
- std::unique_ptr<FsManagerAvbVerifier> avb_verifier = FsManagerAvbVerifier::Create();
+ std::unique_ptr<AvbVerifier> avb_verifier = AvbVerifier::Create();
if (!avb_verifier) {
- LERROR << "Failed to create FsManagerAvbVerifier";
+ LERROR << "Failed to create AvbVerifier";
return nullptr;
}
if (!avb_verifier->VerifyVbmetaImages(*avb_handle->avb_slot_data_)) {
@@ -434,8 +437,8 @@
}
// Checks whether FLAGS_HASHTREE_DISABLED is set.
- bool hashtree_disabled =
- ((AvbVBMetaImageFlags)vbmeta_header.flags & AVB_VBMETA_IMAGE_FLAGS_HASHTREE_DISABLED);
+ bool hashtree_disabled = ((AvbVBMetaImageFlags)vbmeta_header.flags &
+ AVB_VBMETA_IMAGE_FLAGS_HASHTREE_DISABLED);
if (hashtree_disabled) {
avb_handle->status_ = kAvbHandleHashtreeDisabled;
}
@@ -445,28 +448,27 @@
return avb_handle;
}
-SetUpAvbHashtreeResult FsManagerAvbHandle::SetUpAvbHashtree(struct fstab_rec* fstab_entry,
- bool wait_for_verity_dev) {
+AvbHashtreeResult AvbHandle::SetUpAvbHashtree(FstabEntry* fstab_entry, bool wait_for_verity_dev) {
if (!fstab_entry || status_ == kAvbHandleUninitialized || !avb_slot_data_ ||
avb_slot_data_->num_vbmeta_images < 1) {
- return SetUpAvbHashtreeResult::kFail;
+ return AvbHashtreeResult::kFail;
}
if (status_ == kAvbHandleHashtreeDisabled || status_ == kAvbHandleVerificationDisabled) {
LINFO << "AVB HASHTREE disabled on: " << fstab_entry->mount_point;
- return SetUpAvbHashtreeResult::kDisabled;
+ return AvbHashtreeResult::kDisabled;
}
// Derives partition_name from blk_device to query the corresponding AVB HASHTREE descriptor
// to setup dm-verity. The partition_names in AVB descriptors are without A/B suffix.
std::string partition_name;
- if (fstab_entry->fs_mgr_flags & MF_LOGICAL) {
+ if (fstab_entry->fs_mgr_flags.logical) {
partition_name = fstab_entry->logical_partition_name;
} else {
- partition_name = basename(fstab_entry->blk_device);
+ partition_name = basename(fstab_entry->blk_device.c_str());
}
- if (fstab_entry->fs_mgr_flags & MF_SLOTSELECT) {
+ if (fstab_entry->fs_mgr_flags.slot_select) {
auto ab_suffix = partition_name.rfind(fs_mgr_get_slot_suffix());
if (ab_suffix != std::string::npos) {
partition_name.erase(ab_suffix);
@@ -478,14 +480,17 @@
std::string root_digest;
if (!get_hashtree_descriptor(partition_name, *avb_slot_data_, &hashtree_descriptor, &salt,
&root_digest)) {
- return SetUpAvbHashtreeResult::kFail;
+ return AvbHashtreeResult::kFail;
}
// Converts HASHTREE descriptor to verity_table_params.
if (!hashtree_dm_verity_setup(fstab_entry, hashtree_descriptor, salt, root_digest,
wait_for_verity_dev)) {
- return SetUpAvbHashtreeResult::kFail;
+ return AvbHashtreeResult::kFail;
}
- return SetUpAvbHashtreeResult::kSuccess;
+ return AvbHashtreeResult::kSuccess;
}
+
+} // namespace fs_mgr
+} // namespace android
diff --git a/fs_mgr/include/fs_mgr_avb.h b/fs_mgr/libfs_avb/include/fs_avb/fs_avb.h
similarity index 75%
rename from fs_mgr/include/fs_mgr_avb.h
rename to fs_mgr/libfs_avb/include/fs_avb/fs_avb.h
index bb55a14..08bdbdc 100644
--- a/fs_mgr/include/fs_mgr_avb.h
+++ b/fs_mgr/libfs_avb/include/fs_avb/fs_avb.h
@@ -14,18 +14,18 @@
* limitations under the License.
*/
-#ifndef __CORE_FS_MGR_AVB_H
-#define __CORE_FS_MGR_AVB_H
+#pragma once
-#include <map>
#include <memory>
#include <string>
+#include <fstab/fstab.h>
#include <libavb/libavb.h>
-#include "fs_mgr.h"
+namespace android {
+namespace fs_mgr {
-enum class SetUpAvbHashtreeResult {
+enum class AvbHashtreeResult {
kSuccess = 0,
kFail,
kDisabled,
@@ -33,17 +33,15 @@
class FsManagerAvbOps;
-class FsManagerAvbHandle;
-using FsManagerAvbUniquePtr = std::unique_ptr<FsManagerAvbHandle>;
-
-using ByNameSymlinkMap = std::map<std::string, std::string>;
+class AvbHandle;
+using AvbUniquePtr = std::unique_ptr<AvbHandle>;
// Provides a factory method to return a unique_ptr pointing to itself and the
// SetUpAvbHashtree() function to extract dm-verity parameters from AVB HASHTREE
// descriptors to load verity table into kernel through ioctl.
-class FsManagerAvbHandle {
+class AvbHandle {
public:
- // The factory method to return a FsManagerAvbUniquePtr that holds
+ // The factory method to return a AvbUniquePtr that holds
// the verified AVB (external/avb) metadata of all verified partitions
// in avb_slot_data_.vbmeta_images[].
//
@@ -51,7 +49,7 @@
// - androidboot.vbmeta.{hash_alg, size, digest}.
//
// A typical usage will be:
- // - FsManagerAvbUniquePtr handle = FsManagerAvbHandle::Open();
+ // - AvbUniquePtr handle = AvbHandle::Open();
//
// Possible return values:
// - nullptr: any error when reading and verifying the metadata,
@@ -75,7 +73,7 @@
// - a valid unique_ptr with status kAvbHandleSuccess: the metadata
// is verified and can be trusted.
//
- static FsManagerAvbUniquePtr Open();
+ static AvbUniquePtr Open();
// Sets up dm-verity on the given fstab entry.
// The 'wait_for_verity_dev' parameter makes this function wait for the
@@ -87,17 +85,17 @@
// failed to get the HASHTREE descriptor, runtime error when set up
// device-mapper, etc.
// - kDisabled: hashtree is disabled.
- SetUpAvbHashtreeResult SetUpAvbHashtree(fstab_rec* fstab_entry, bool wait_for_verity_dev);
+ AvbHashtreeResult SetUpAvbHashtree(FstabEntry* fstab_entry, bool wait_for_verity_dev);
const std::string& avb_version() const { return avb_version_; }
- FsManagerAvbHandle(const FsManagerAvbHandle&) = delete; // no copy
- FsManagerAvbHandle& operator=(const FsManagerAvbHandle&) = delete; // no assignment
+ AvbHandle(const AvbHandle&) = delete; // no copy
+ AvbHandle& operator=(const AvbHandle&) = delete; // no assignment
- FsManagerAvbHandle(FsManagerAvbHandle&&) noexcept = delete; // no move
- FsManagerAvbHandle& operator=(FsManagerAvbHandle&&) noexcept = delete; // no move assignment
+ AvbHandle(AvbHandle&&) noexcept = delete; // no move
+ AvbHandle& operator=(AvbHandle&&) noexcept = delete; // no move assignment
- ~FsManagerAvbHandle() {
+ ~AvbHandle() {
if (avb_slot_data_) {
avb_slot_verify_data_free(avb_slot_data_);
}
@@ -112,11 +110,12 @@
kAvbHandleVerificationError,
};
- FsManagerAvbHandle() : avb_slot_data_(nullptr), status_(kAvbHandleUninitialized) {}
+ AvbHandle() : avb_slot_data_(nullptr), status_(kAvbHandleUninitialized) {}
AvbSlotVerifyData* avb_slot_data_;
AvbHandleStatus status_;
std::string avb_version_;
};
-#endif /* __CORE_FS_MGR_AVB_H */
+} // namespace fs_mgr
+} // namespace android
diff --git a/fs_mgr/fs_mgr_priv_sha.h b/fs_mgr/libfs_avb/sha.h
similarity index 92%
rename from fs_mgr/fs_mgr_priv_sha.h
rename to fs_mgr/libfs_avb/sha.h
index 5b53eea..2d3ca6d 100644
--- a/fs_mgr/fs_mgr_priv_sha.h
+++ b/fs_mgr/libfs_avb/sha.h
@@ -14,11 +14,13 @@
* limitations under the License.
*/
-#ifndef __CORE_FS_MGR_PRIV_SHA_H
-#define __CORE_FS_MGR_PRIV_SHA_H
+#pragma once
#include <openssl/sha.h>
+namespace android {
+namespace fs_mgr {
+
class SHA256Hasher {
private:
SHA256_CTX sha256_ctx;
@@ -59,4 +61,5 @@
}
};
-#endif /* __CORE_FS_MGR_PRIV_SHA_H */
+} // namespace fs_mgr
+} // namespace android
diff --git a/fs_mgr/liblp/builder.cpp b/fs_mgr/liblp/builder.cpp
index da86d75..07f9d66 100644
--- a/fs_mgr/liblp/builder.cpp
+++ b/fs_mgr/liblp/builder.cpp
@@ -578,6 +578,12 @@
CHECK_NE(sectors_per_block, 0);
CHECK(sectors_needed % sectors_per_block == 0);
+ if (IsABDevice() && !IsRetrofitDevice() && GetPartitionSlotSuffix(partition->name()) == "_b") {
+ // Allocate "a" partitions top-down and "b" partitions bottom-up, to
+ // minimize fragmentation during OTA.
+ free_regions = PrioritizeSecondHalfOfSuper(free_regions);
+ }
+
// Find gaps that we can use for new extents. Note we store new extents in a
// temporary vector, and only commit them if we are guaranteed enough free
// space.
@@ -600,14 +606,23 @@
}
uint64_t sectors = std::min(sectors_needed, region.length());
+ if (sectors < region.length()) {
+ const auto& block_device = block_devices_[region.device_index];
+ if (block_device.alignment) {
+ const uint64_t alignment = block_device.alignment / LP_SECTOR_SIZE;
+ sectors = AlignTo(sectors, alignment);
+ sectors = std::min(sectors, region.length());
+ }
+ }
CHECK(sectors % sectors_per_block == 0);
auto extent = std::make_unique<LinearExtent>(sectors, region.device_index, region.start);
new_extents.push_back(std::move(extent));
- sectors_needed -= sectors;
- if (!sectors_needed) {
+ if (sectors >= sectors_needed) {
+ sectors_needed = 0;
break;
}
+ sectors_needed -= sectors;
}
if (sectors_needed) {
LERROR << "Not enough free space to expand partition: " << partition->name();
@@ -621,6 +636,40 @@
return true;
}
+std::vector<MetadataBuilder::Interval> MetadataBuilder::PrioritizeSecondHalfOfSuper(
+ const std::vector<Interval>& free_list) {
+ const auto& super = block_devices_[0];
+ uint64_t first_sector = super.first_logical_sector;
+ uint64_t last_sector = super.size / LP_SECTOR_SIZE;
+ uint64_t midpoint = first_sector + (last_sector - first_sector) / 2;
+
+ // Choose an aligned sector for the midpoint. This could lead to one half
+ // being slightly larger than the other, but this will not restrict the
+ // size of partitions (it might lead to one extra extent if "B" overflows).
+ midpoint = AlignSector(super, midpoint);
+
+ std::vector<Interval> first_half;
+ std::vector<Interval> second_half;
+ for (const auto& region : free_list) {
+ // Note: deprioritze if not the main super partition. Even though we
+ // don't call this for retrofit devices, we will allow adding additional
+ // block devices on non-retrofit devices.
+ if (region.device_index != 0 || region.end <= midpoint) {
+ first_half.emplace_back(region);
+ continue;
+ }
+ if (region.start < midpoint && region.end > midpoint) {
+ // Split this into two regions.
+ first_half.emplace_back(region.device_index, region.start, midpoint);
+ second_half.emplace_back(region.device_index, midpoint, region.end);
+ } else {
+ second_half.emplace_back(region);
+ }
+ }
+ second_half.insert(second_half.end(), first_half.begin(), first_half.end());
+ return second_half;
+}
+
void MetadataBuilder::ShrinkPartition(Partition* partition, uint64_t aligned_size) {
partition->ShrinkTo(aligned_size);
}
@@ -930,5 +979,9 @@
return android::base::GetBoolProperty("ro.build.ab_update", false);
}
+bool MetadataBuilder::IsRetrofitDevice() const {
+ return GetBlockDevicePartitionName(block_devices_[0]) != LP_METADATA_DEFAULT_PARTITION_NAME;
+}
+
} // namespace fs_mgr
} // namespace android
diff --git a/fs_mgr/liblp/builder_test.cpp b/fs_mgr/liblp/builder_test.cpp
index 926fe12..3793964 100644
--- a/fs_mgr/liblp/builder_test.cpp
+++ b/fs_mgr/liblp/builder_test.cpp
@@ -209,8 +209,8 @@
ASSERT_TRUE(builder->ResizePartition(a, a->size() + 4096));
ASSERT_TRUE(builder->ResizePartition(b, b->size() + 4096));
}
- EXPECT_EQ(a->size(), 40960);
- EXPECT_EQ(b->size(), 40960);
+ EXPECT_EQ(a->size(), 7864320);
+ EXPECT_EQ(b->size(), 7864320);
unique_ptr<LpMetadata> exported = builder->Export();
ASSERT_NE(exported, nullptr);
@@ -218,7 +218,7 @@
// Check that each starting sector is aligned.
for (const auto& extent : exported->extents) {
ASSERT_EQ(extent.target_type, LP_TARGET_TYPE_LINEAR);
- EXPECT_EQ(extent.num_sectors, 8);
+ EXPECT_EQ(extent.num_sectors, 1536);
uint64_t lba = extent.target_data * LP_SECTOR_SIZE;
uint64_t aligned_lba = AlignTo(lba, device_info.alignment, device_info.alignment_offset);
@@ -645,7 +645,7 @@
EXPECT_EQ(metadata->extents[1].target_type, LP_TARGET_TYPE_LINEAR);
EXPECT_EQ(metadata->extents[1].target_data, 1472);
EXPECT_EQ(metadata->extents[1].target_source, 1);
- EXPECT_EQ(metadata->extents[2].num_sectors, 129088);
+ EXPECT_EQ(metadata->extents[2].num_sectors, 129600);
EXPECT_EQ(metadata->extents[2].target_type, LP_TARGET_TYPE_LINEAR);
EXPECT_EQ(metadata->extents[2].target_data, 1472);
EXPECT_EQ(metadata->extents[2].target_source, 2);
@@ -720,3 +720,65 @@
ASSERT_EQ(builder->AddPartition("system", 0), nullptr);
ASSERT_NE(builder->AddPartition("system_a", 0), nullptr);
}
+
+TEST_F(BuilderTest, ABExtents) {
+ BlockDeviceInfo device_info("super", 10_GiB, 768 * 1024, 0, 4096);
+
+ // A and B slots should be allocated from separate halves of the partition,
+ // to mitigate allocating too many extents. (b/120433288)
+ MetadataBuilder::OverrideABForTesting(true);
+ auto builder = MetadataBuilder::New(device_info, 65536, 2);
+ ASSERT_NE(builder, nullptr);
+ Partition* system_a = builder->AddPartition("system_a", 0);
+ ASSERT_NE(system_a, nullptr);
+ Partition* system_b = builder->AddPartition("system_b", 0);
+ ASSERT_NE(system_b, nullptr);
+ ASSERT_TRUE(builder->ResizePartition(system_a, 2_GiB));
+ ASSERT_TRUE(builder->ResizePartition(system_b, 2_GiB));
+
+ builder->RemovePartition("system_a");
+ system_a = builder->AddPartition("system_a", 0);
+ ASSERT_NE(system_a, nullptr);
+ ASSERT_TRUE(builder->ResizePartition(system_a, 3_GiB));
+
+ EXPECT_EQ(system_a->extents().size(), static_cast<size_t>(1));
+ EXPECT_EQ(system_b->extents().size(), static_cast<size_t>(1));
+ ASSERT_TRUE(builder->ResizePartition(system_b, 6_GiB));
+ EXPECT_EQ(system_b->extents().size(), static_cast<size_t>(2));
+
+ unique_ptr<LpMetadata> exported = builder->Export();
+ ASSERT_NE(exported, nullptr);
+ ASSERT_EQ(exported->extents.size(), static_cast<size_t>(3));
+ EXPECT_EQ(exported->extents[0].target_data, 10487808);
+ EXPECT_EQ(exported->extents[0].num_sectors, 10483712);
+ EXPECT_EQ(exported->extents[1].target_data, 6292992);
+ EXPECT_EQ(exported->extents[1].num_sectors, 2099712);
+ EXPECT_EQ(exported->extents[2].target_data, 1536);
+ EXPECT_EQ(exported->extents[2].num_sectors, 6291456);
+}
+
+TEST_F(BuilderTest, PartialExtents) {
+ // super has a minimum extent size of 768KiB.
+ BlockDeviceInfo device_info("super", 1_GiB, 768 * 1024, 0, 4096);
+ auto builder = MetadataBuilder::New(device_info, 65536, 1);
+ ASSERT_NE(builder, nullptr);
+ Partition* system = builder->AddPartition("system", 0);
+ ASSERT_NE(system, nullptr);
+ Partition* vendor = builder->AddPartition("vendor", 0);
+ ASSERT_NE(vendor, nullptr);
+ ASSERT_TRUE(builder->ResizePartition(system, device_info.alignment + 4096));
+ ASSERT_TRUE(builder->ResizePartition(vendor, device_info.alignment));
+ ASSERT_EQ(system->size(), device_info.alignment * 2);
+ ASSERT_EQ(vendor->size(), device_info.alignment);
+
+ ASSERT_TRUE(builder->ResizePartition(system, device_info.alignment * 2));
+ ASSERT_EQ(system->extents().size(), static_cast<size_t>(1));
+
+ unique_ptr<LpMetadata> exported = builder->Export();
+ ASSERT_NE(exported, nullptr);
+ ASSERT_EQ(exported->extents.size(), static_cast<size_t>(2));
+ EXPECT_EQ(exported->extents[0].target_data, 1536);
+ EXPECT_EQ(exported->extents[0].num_sectors, 3072);
+ EXPECT_EQ(exported->extents[1].target_data, 4608);
+ EXPECT_EQ(exported->extents[1].num_sectors, 1536);
+}
diff --git a/fs_mgr/liblp/include/liblp/builder.h b/fs_mgr/liblp/include/liblp/builder.h
index 4bb38d6..f477b4b 100644
--- a/fs_mgr/liblp/include/liblp/builder.h
+++ b/fs_mgr/liblp/include/liblp/builder.h
@@ -275,6 +275,7 @@
const LpMetadataPartition& source);
bool ImportPartition(const LpMetadata& metadata, const LpMetadataPartition& source);
bool IsABDevice() const;
+ bool IsRetrofitDevice() const;
struct Interval {
uint32_t device_index;
@@ -294,6 +295,7 @@
std::vector<Interval> GetFreeRegions() const;
void ExtentsToFreeList(const std::vector<Interval>& extents,
std::vector<Interval>* free_regions) const;
+ std::vector<Interval> PrioritizeSecondHalfOfSuper(const std::vector<Interval>& free_list);
static bool sABOverrideValue;
static bool sABOverrideSet;
diff --git a/fs_mgr/liblp/writer.cpp b/fs_mgr/liblp/writer.cpp
index d8195ca..454258b 100644
--- a/fs_mgr/liblp/writer.cpp
+++ b/fs_mgr/liblp/writer.cpp
@@ -84,7 +84,6 @@
// with potentially invalid metadata, or random partition data with metadata.
static bool ValidateAndSerializeMetadata(const IPartitionOpener& opener, const LpMetadata& metadata,
const std::string& slot_suffix, std::string* blob) {
- const LpMetadataHeader& header = metadata.header;
const LpMetadataGeometry& geometry = metadata.geometry;
*blob = SerializeMetadata(metadata);
diff --git a/fs_mgr/tests/adb-remount-test.sh b/fs_mgr/tests/adb-remount-test.sh
index d9e017c..9e211e3 100755
--- a/fs_mgr/tests/adb-remount-test.sh
+++ b/fs_mgr/tests/adb-remount-test.sh
@@ -27,6 +27,7 @@
GREEN="${ESCAPE}[38;5;40m"
RED="${ESCAPE}[38;5;196m"
ORANGE="${ESCAPE}[38;5;255:165:0m"
+BLUE="${ESCAPE}[35m"
NORMAL="${ESCAPE}[0m"
# Helper functions
@@ -35,17 +36,28 @@
Returns: true if device is in fastboot mode" ]
inFastboot() {
- fastboot devices | grep "^${ANDROID_SERIAL}[${SPACE}${TAB}]" > /dev/null
+ fastboot devices |
+ if [ -n "${ANDROID_SERIAL}" ]; then
+ grep "^${ANDROID_SERIAL}[${SPACE}${TAB}]" > /dev/null
+ else
+ wc -l | grep '^1$' >/dev/null
+ fi
}
[ "USAGE: inAdb
Returns: true if device is in adb mode" ]
inAdb() {
- adb devices | grep -v 'List of devices attached' | grep "^${ANDROID_SERIAL}[${SPACE}${TAB}]" > /dev/null
+ adb devices |
+ grep -v 'List of devices attached' |
+ if [ -n "${ANDROID_SERIAL}" ]; then
+ grep "^${ANDROID_SERIAL}[${SPACE}${TAB}]" > /dev/null
+ else
+ wc -l | grep '^1$' >/dev/null
+ fi
}
-[ "USAGE: adb_sh <commands>
+[ "USAGE: adb_sh <commands> </dev/stdin >/dev/stdout 2>/dev/stderr
Returns: true if the command succeeded" ]
adb_sh() {
@@ -80,12 +92,12 @@
Returns: true if device is (likely) a debug build" ]
isDebuggable() {
- if inAdb && [ 1 -ne `get_property ro.debuggable` ]; then
+ if inAdb && [ 1 -ne "`get_property ro.debuggable`" ]; then
false
fi
}
-[ "USAGE: adb_su <commands>
+[ "USAGE: adb_su <commands> </dev/stdin >/dev/stdout 2>/dev/stderr
Returns: true if the command running as root succeeded" ]
adb_su() {
@@ -138,6 +150,8 @@
[ "USAGE: adb_root
+NB: This can be flakey on devices due to USB state
+
Returns: true if device in root state" ]
adb_root() {
adb root >/dev/null </dev/null 2>/dev/null
@@ -159,6 +173,9 @@
false
return
fi
+ if [ "${O}" != "${O#*FAILED}" ]; then
+ O="${1}: <empty>"
+ fi
if [ -n "${2}" -a "${1}: ${2}" != "${O}" ]; then
echo "${2} != ${O}" >&2
false
@@ -167,14 +184,21 @@
echo ${O} >&2
}
-[ "USAGE: die [-t <epoch>] [message] >/dev/stderr
+[ "USAGE: die [-d|-t <epoch>] [message] >/dev/stderr
-If -t <epoch> argument is supplied, dump logcat.
+If -d, or -t <epoch> argument is supplied, dump logcat.
Returns: exit failure, report status" ]
die() {
- if [ X"-t" = X"${1}" -a -n "${2}" ]; then
- adb_logcat -b all -v nsec -t ${2} >&2
+ if [ X"-d" = X"${1}" ]; then
+ adb_logcat -b all -v nsec -d >&2
+ shift
+ elif [ X"-t" = X"${1}" ]; then
+ if [ -n "${2}" ]; then
+ adb_logcat -b all -v nsec -t ${2} >&2
+ else
+ adb_logcat -b all -v nsec -d >&2
+ fi
shift 2
fi
echo "${RED}[ FAILED ]${NORMAL} ${@}" >&2
@@ -238,15 +262,20 @@
die "${@}"
}
-[ "USAGE: skip_administrative_mounts < /proc/mounts
+[ "USAGE: skip_administrative_mounts [data] < /proc/mounts
Filters out all administrative (eg: sysfs) mounts uninteresting to the test" ]
skip_administrative_mounts() {
+ if [ "data" = "${1}" ]; then
+ grep -v " /data "
+ else
+ cat -
+ fi |
grep -v \
-e "^\(overlay\|tmpfs\|none\|sysfs\|proc\|selinuxfs\|debugfs\) " \
-e "^\(bpf\|cg2_bpf\|pstore\|tracefs\|adb\|mtp\|ptp\|devpts\) " \
-e "^\(/data/media\|/dev/block/loop[0-9]*\) " \
- -e " /\(cache\|mnt/scratch\|mnt/vendor/persist\|metadata\|data\) "
+ -e " /\(cache\|mnt/scratch\|mnt/vendor/persist\|metadata\) "
}
if [ X"-s" = X"${1}" -a -n "${2}" ]; then
@@ -259,24 +288,59 @@
echo "${ORANGE}[ WARNING ]${NORMAL} device not in adb mode ... waiting 2 minutes"
adb_wait 2m
fi
-inAdb || die "device not in adb mode"
+inAdb || die "specified device not in adb mode"
isDebuggable || die "device not a debug build"
+enforcing=true
+if ! adb_su getenforce </dev/null | grep 'Enforcing' >/dev/null; then
+ echo "${ORANGE}[ WARNING ]${NORMAL} device does not have sepolicy in enforcing mode"
+ enforcing=false
+fi
# Do something
+
+echo "${GREEN}[ RUN ]${NORMAL} Testing kernel support for overlayfs" >&2
+
+overlayfs_supported=true;
adb_wait || die "wait for device failed"
adb_sh ls -d /sys/module/overlay </dev/null >/dev/null &&
echo "${GREEN}[ OK ]${NORMAL} overlay module present" >&2 ||
- die "overlay module not present"
-adb_su ls /sys/module/overlay/parameters/override_creds </dev/null >/dev/null &&
- echo "${GREEN}[ OK ]${NORMAL} overlay module supports override_creds" >&2 ||
- die "overlay module can not be used on ANDROID"
+ (
+ echo "${ORANGE}[ WARNING ]${NORMAL} overlay module not present" >&2 &&
+ false
+ ) ||
+ overlayfs_supported=false
+if ${overlayfs_supported}; then
+ case `adb_sh uname -r </dev/null` in
+ 4.[6789].* | 4.[1-9][0-9]* | [56789].*)
+ adb_su ls /sys/module/overlay/parameters/override_creds </dev/null >/dev/null &&
+ echo "${GREEN}[ OK ]${NORMAL} overlay module supports override_creds" >&2 ||
+ (
+ echo "${ORANGE}[ WARNING ]${NORMAL} overlay module does not support override_creds" >&2 &&
+ false
+ ) ||
+ overlayfs_supported=false;
+ ;;
+ *)
+ echo "${GREEN}[ OK ]${NORMAL} overlay module uses callers creds" >&2
+ ;;
+ esac
+fi
+
adb_root ||
die "initial setup"
+
+echo "${GREEN}[ RUN ]${NORMAL} Checking current overlayfs status" >&2
+
+# We can not universally use adb enable-verity to ensure device is
+# in a overlayfs disabled state since it can prevent reboot on
+# devices that remount the physical content rather than overlayfs.
+# So lets do our best to surgically wipe the overlayfs state without
+# having to go through enable-verity transition.
reboot=false
OVERLAYFS_BACKING="cache mnt/scratch"
for d in ${OVERLAYFS_BACKING}; do
if adb_sh ls -d /${d}/overlay </dev/null >/dev/null 2>/dev/null; then
- echo "${ORANGE}[ WARNING ]${NORMAL} /${d}/overlay is setup, wiping" >&2
+ echo "${ORANGE}[ WARNING ]${NORMAL} /${d}/overlay is setup, surgically wiping" >&2
adb_sh rm -rf /${d}/overlay </dev/null ||
die "/${d}/overlay wipe"
reboot=true
@@ -285,9 +349,10 @@
if ${reboot}; then
echo "${ORANGE}[ WARNING ]${NORMAL} rebooting before test" >&2
adb_reboot &&
- adb_wait 2m &&
- adb_root ||
- die "reboot after wipe"
+ adb_wait 2m ||
+ die "lost device after reboot after wipe"
+ adb_root ||
+ die "lost device after elevation to root after wipe"
fi
D=`adb_sh df -k </dev/null` &&
H=`echo "${D}" | head -1` &&
@@ -296,126 +361,271 @@
echo "${D}" &&
echo "${ORANGE}[ WARNING ]${NORMAL} overlays present before setup" >&2 ||
echo "${GREEN}[ OK ]${NORMAL} no overlay present before setup" >&2
-adb_sh df -k `adb_sh cat /proc/mounts |
- skip_administrative_mounts |
- cut -s -d' ' -f1`
+overlayfs_needed=true
+D=`adb_sh cat /proc/mounts </dev/null |
+ skip_administrative_mounts data |
+ cut -s -d' ' -f1`
+D=`adb_sh df -k ${D} </dev/null`
+echo "${D}"
+if [ X"${D}" = X"${D##* 100[%] }" ]; then
+ overlayfs_needed=false
+elif ! ${overlayfs_supported}; then
+ die "need overlayfs, but do not have it"
+fi
+
+echo "${GREEN}[ RUN ]${NORMAL} disable verity" >&2
T=`adb_date`
-D=`adb disable-verity 2>&1`
+H=`adb disable-verity 2>&1`
err=${?}
-echo "${D}"
-if [ ${err} != 0 -o X"${D}" != X"${D##*setup failed}" ]; then
- die -t ${T} "setup for overlay"
-fi
+L=
+D="${H%?Now reboot your device for settings to take effect}"
if [ X"${D}" != X"${D##*using overlayfs}" ]; then
echo "${GREEN}[ OK ]${NORMAL} using overlayfs" >&2
fi
-adb_reboot &&
- adb_wait &&
- D=`adb_sh df -k </dev/null` &&
- H=`echo "${D}" | head -1` &&
- D=`echo "${D}" | grep "^overlay "` &&
- echo "${H}" &&
- echo "${D}" ||
- die "overlay takeover failed"
-echo "${D}" | grep "^overlay .* /system\$" >/dev/null ||
- echo "${ORANGE}[ WARNING ]${NORMAL} overlay takeover before remount not complete" >&2
-
-T=`adb_date`
-adb_root &&
- adb remount &&
- D=`adb_sh df -k </dev/null` ||
- die -t ${T} "can not collect filesystem data"
-if echo "${D}" | grep " /mnt/scratch" >/dev/null; then
- echo "${ORANGE}[ INFO ]${NORMAL} using scratch dynamic partition for overrides" >&2
- H=`adb_sh cat /proc/mounts | sed -n 's@\([^ ]*\) /mnt/scratch \([^ ]*\) .*@\2 on \1@p'`
- [ -n "${H}" ] &&
- echo "${ORANGE}[ INFO ]${NORMAL} scratch filesystem ${H}"
+if [ ${err} != 0 ]; then
+ echo "${H}"
+ ( [ -n "${L}" ] && echo "${L}" && false ) ||
+ die -t "${T}" "disable-verity"
fi
-for d in ${OVERLAYFS_BACKING}; do
- if adb_sh ls -d /${d}/overlay/system/upper </dev/null >/dev/null 2>/dev/null; then
- echo "${ORANGE}[ INFO ]${NORMAL} /${d}/overlay is setup" >&2
+rebooted=false
+if [ X"${D}" != X"${H}" ]; then
+ echo "${H}"
+ if [ X"${D}" != X"${D##*setup failed}" ]; then
+ echo "${ORANGE}[ WARNING ]${NORMAL} overlayfs setup whined" >&2
fi
-done
+ D=`adb_sh df -k </dev/null` &&
+ H=`echo "${D}" | head -1` &&
+ D=`echo "${D}" | grep "^overlay " || true` &&
+ [ -z "${D}" ] ||
+ ( echo "${H}" && echo "${D}" && false ) ||
+ die -t ${T} "overlay takeover unexpected at this phase"
+ echo "${GREEN}[ INFO ]${NORMAL} rebooting as requested" >&2
+ L=`adb_logcat -b all -v nsec -t ${T} 2>&1`
+ adb_reboot &&
+ adb_wait 2m ||
+ die "lost device after reboot requested"
+ adb_root ||
+ die "lost device after elevation to root"
+ rebooted=true
+ # re-disable verity to see the setup remarks expected
+ T=`adb_date`
+ H=`adb disable-verity 2>&1`
+ err=${?}
+ D="${H%?Now reboot your device for settings to take effect}"
+ if [ X"${D}" != X"${D##*using overlayfs}" ]; then
+ echo "${GREEN}[ OK ]${NORMAL} using overlayfs" >&2
+ fi
+ if [ ${err} != 0 ]; then
+ T=
+ fi
+fi
+if ${overlayfs_supported} && ${overlayfs_needed} && [ X"${D}" != X"${D##*setup failed}" ]; then
+ echo "${D}"
+ ( [ -n "${L}" ] && echo "${L}" && false ) ||
+ die -t "${T}" "setup for overlay"
+fi
+if [ X"${D}" != X"${D##*Successfully disabled verity}" ]; then
+ echo "${H}"
+ D=`adb_sh df -k </dev/null` &&
+ H=`echo "${D}" | head -1` &&
+ D=`echo "${D}" | grep "^overlay " || true` &&
+ [ -z "${D}" ] ||
+ ( echo "${H}" && echo "${D}" && false ) ||
+ ( [ -n "${L}" ] && echo "${L}" && false ) ||
+ die -t "${T}" "overlay takeover unexpected"
+ [ -n "${L}" ] && echo "${L}"
+ die -t "${T}" "unexpected report of verity being disabled a second time"
+elif ${rebooted}; then
+ echo "${GREEN}[ OK ]${NORMAL} verity already disabled" >&2
+else
+ echo "${ORANGE}[ WARNING ]${NORMAL} verity already disabled" >&2
+fi
-H=`echo "${D}" | head -1` &&
- D=`echo "${D}" | grep "^overlay "` &&
- echo "${H}" &&
- echo "${D}" &&
+echo "${GREEN}[ RUN ]${NORMAL} remount" >&2
+
+adb remount ||
+ ( [ -n "${L}" ] && echo "${L}" && false ) ||
+ die -t "${T}" "adb remount failed"
+D=`adb_sh df -k </dev/null` &&
+ H=`echo "${D}" | head -1` &&
+ D=`echo "${D}" | grep "^overlay "` ||
+ ( [ -n "${L}" ] && echo "${L}" && false )
+ret=${?}
+uses_dynamic_scratch=false
+scratch_partition=
+if ${overlayfs_needed}; then
+ if [ ${ret} != 0 ]; then
+ die -t ${T} "overlay takeover failed"
+ fi
echo "${D}" | grep "^overlay .* /system\$" >/dev/null ||
- die "overlay takeover after remount"
-!(adb_sh grep "^overlay " /proc/mounts </dev/null | grep " overlay ro,") &&
- !(adb_sh grep " rw," /proc/mounts </dev/null | skip_administrative_mounts) ||
- die "remount overlayfs missed a spot (ro)"
+ echo "${ORANGE}[ WARNING ]${NORMAL} overlay takeover not complete" >&2
+ scratch_partition=scratch
+ if echo "${D}" | grep " /mnt/scratch" >/dev/null; then
+ echo "${BLUE}[ INFO ]${NORMAL} using ${scratch_partition} dynamic partition for overrides" >&2
+ fi
+ M=`adb_sh cat /proc/mounts </dev/null |
+ sed -n 's@\([^ ]*\) /mnt/scratch \([^ ]*\) .*@\2 on \1@p'`
+ [ -n "${M}" ] &&
+ echo "${BLUE}[ INFO ]${NORMAL} scratch filesystem ${M}"
+ uses_dynamic_scratch=true
+ if [ "${M}" != "${M##*/dev/block/by-name/}" ]; then
+ uses_dynamic_scratch=false
+ scratch_partition="${M##*/dev/block/by-name/}"
+ fi
+ scratch_size=`adb_sh df -k /mnt/scratch </dev/null 2>/dev/null |
+ while read device kblocks used available use mounted on; do
+ if [ "/mnt/scratch" = "\${mounted}" ]; then
+ echo \${kblocks}
+ fi
+ done` &&
+ [ -n "${scratch_size}" ] ||
+ die "scratch size"
+ echo "${BLUE}[ INFO ]${NORMAL} scratch size ${scratch_size}KB" >&2
+ for d in ${OVERLAYFS_BACKING}; do
+ if adb_sh ls -d /${d}/overlay/system/upper </dev/null >/dev/null 2>/dev/null; then
+ echo "${BLUE}[ INFO ]${NORMAL} /${d}/overlay is setup" >&2
+ fi
+ done
-adb_su "sed -n '1,/overlay \\/system/p' /proc/mounts" </dev/null |
- skip_administrative_mounts |
- grep -v ' \(squashfs\|ext4\|f2fs\) ' &&
- echo "${ORANGE}[ WARNING ]${NORMAL} overlay takeover after first stage init" >&2 ||
- echo "${GREEN}[ OK ]${NORMAL} overlay takeover in first stage init" >&2
+ echo "${H}" &&
+ echo "${D}" &&
+ echo "${D}" | grep "^overlay .* /system\$" >/dev/null ||
+ die "overlay takeover after remount"
+ !(adb_sh grep "^overlay " /proc/mounts </dev/null | grep " overlay ro,") &&
+ !(adb_sh grep " rw," /proc/mounts </dev/null |
+ skip_administrative_mounts data) ||
+ die "remount overlayfs missed a spot (ro)"
+else
+ if [ ${ret} = 0 ]; then
+ die -t ${T} "unexpected overlay takeover"
+ fi
+fi
# Check something
+
+echo "${GREEN}[ RUN ]${NORMAL} push content to /system and /vendor" >&2
+
A="Hello World! $(date)"
echo "${A}" | adb_sh "cat - > /system/hello"
echo "${A}" | adb_sh "cat - > /vendor/hello"
B="`adb_cat /system/hello`" ||
die "sytem hello"
-check_eq "${A}" "${B}" system before reboot
+check_eq "${A}" "${B}" /system before reboot
B="`adb_cat /vendor/hello`" ||
die "vendor hello"
-check_eq "${A}" "${B}" vendor before reboot
+check_eq "${A}" "${B}" /vendor before reboot
+
+echo "${GREEN}[ RUN ]${NORMAL} reboot to confirm content persistent" >&2
+
adb_reboot &&
- adb_wait &&
- B="`adb_cat /system/hello`" ||
- die "re-read system hello after reboot"
-check_eq "${A}" "${B}" system after reboot
+ adb_wait 2m ||
+ die "reboot after override content added failed"
+
+if ${overlayfs_needed}; then
+ D=`adb_su df -k </dev/null` &&
+ H=`echo "${D}" | head -1` &&
+ D=`echo "${D}" | grep "^overlay "` ||
+ ( echo "${L}" && false ) ||
+ die -d "overlay takeover failed after reboot"
+
+ adb_su "sed -n '1,/overlay \\/system/p' /proc/mounts" </dev/null |
+ skip_administrative_mounts |
+ grep -v ' \(squashfs\|ext4\|f2fs\) ' &&
+ echo "${ORANGE}[ WARNING ]${NORMAL} overlay takeover after first stage init" >&2 ||
+ echo "${GREEN}[ OK ]${NORMAL} overlay takeover in first stage init" >&2
+fi
+
+B="`adb_cat /system/hello`" ||
+ die "re-read /system/hello after reboot"
+check_eq "${A}" "${B}" /system after reboot
+echo "${GREEN}[ OK ]${NORMAL} /system content remains after reboot" >&2
# Only root can read vendor if sepolicy permissions are as expected
-B="`adb_cat /vendor/hello`" &&
- die "re-read vendor hello after reboot w/o root"
-check_eq "cat: /vendor/hello: Permission denied" "${B}" vendor after reboot w/o root
+if ${enforcing}; then
+ B="`adb_cat /vendor/hello`" &&
+ die "re-read /vendor/hello after reboot w/o root"
+ check_eq "cat: /vendor/hello: Permission denied" "${B}" vendor after reboot w/o root
+ echo "${GREEN}[ OK ]${NORMAL} /vendor content correct MAC after reboot" >&2
+fi
adb_root &&
B="`adb_cat /vendor/hello`" ||
- die "re-read vendor hello after reboot"
+ die "re-read /vendor/hello after reboot"
check_eq "${A}" "${B}" vendor after reboot
+echo "${GREEN}[ OK ]${NORMAL} /vendor content remains after reboot" >&2
-adb reboot-fastboot &&
- fastboot_wait 2m &&
- fastboot flash vendor ||
- die "fastbootd flash vendor"
-# check scratch via fastboot
-fastboot_getvar partition-type:scratch raw &&
- fastboot_getvar has-slot:scratch no &&
- fastboot_getvar is-logical:scratch yes ||
- die "fastboot can not see scratch parameters"
-echo "${ORANGE}[ INFO ]${NORMAL} expect fastboot erase scratch to fail" >&2
-fastboot erase scratch &&
- die "fastbootd can erase scratch"
-echo "${ORANGE}[ INFO ]${NORMAL} expect fastboot format scratch to fail" >&2
-fastboot format scratch &&
- die "fastbootd can format scratch"
-fastboot reboot ||
- die "can not reboot out of fastbootd"
-echo "${ORANGE}[ WARNING ]${NORMAL} adb after fastboot ... waiting 2 minutes"
-adb_wait 2m ||
- die "did not reboot after flash"
-adb_root &&
- D=`adb_sh df -k </dev/null` &&
- H=`echo "${D}" | head -1` &&
- D=`echo "${D}" | grep "^overlay "` &&
- echo "${H}" &&
- echo "${D}" &&
- echo "${D}" | grep "^overlay .* /system\$" >/dev/null ||
- die "overlay system takeover after flash vendor"
-echo "${D}" | grep "^overlay .* /vendor\$" >/dev/null &&
- die "overlay minus vendor takeover after flash vendor"
-B="`adb_cat /system/hello`" ||
- die "re-read system hello after flash vendor"
-check_eq "${A}" "${B}" system after flash vendor
-adb_root ||
- die "adb root"
-B="`adb_cat /vendor/hello`" &&
- die "re-read vendor hello after flash vendor"
-check_eq "cat: /vendor/hello: No such file or directory" "${B}" vendor after flash vendor
+echo "${GREEN}[ RUN ]${NORMAL} flash vendor, confirm its content disappears" >&2
+
+H=`adb_sh echo '${HOSTNAME}' </dev/null 2>/dev/null`
+if [ -z "${ANDROID_PRODUCT_OUT}" ]; then
+ echo "${ORANGE}[ WARNING ]${NORMAL} build tree not setup, skipping"
+elif [ ! -s "${ANDROID_PRODUCT_OUT}/vendor.img" ]; then
+ echo "${ORANGE}[ WARNING ]${NORMAL} vendor image missing, skipping"
+elif [ "${ANDROID_PRODUCT_OUT}" = "${ANDROID_PRODUCT_OUT%*/${H}}" ]; then
+ echo "${ORANGE}[ WARNING ]${NORMAL} wrong vendor image, skipping"
+else
+ adb reboot-fastboot &&
+ fastboot_wait 2m &&
+ fastboot flash vendor ||
+ ( fastboot reboot && false) ||
+ die "fastboot flash vendor"
+ if [ -n "${scratch_paritition}" ]; then
+ fastboot_getvar partition-type:${scratch_partition} raw ||
+ ( fastboot reboot && false) ||
+ die "fastboot can not see ${scratch_partition} parameters"
+ if ${uses_dynamic_scratch}; then
+ # check ${scratch_partition} via fastboot
+ fastboot_getvar has-slot:${scratch_partition} no &&
+ fastboot_getvar is-logical:${scratch_partition} yes ||
+ ( fastboot reboot && false) ||
+ die "fastboot can not see ${scratch_partition} parameters"
+ else
+ fastboot_getvar is-logical:${scratch_partition} no ||
+ ( fastboot reboot && false) ||
+ die "fastboot can not see ${scratch_partition} parameters"
+ fi
+ if ! ${uses_dynamic_scratch}; then
+ fastboot reboot-bootloader ||
+ die "Reboot into fastboot"
+ fi
+ if ${uses_dynamic_scratch}; then
+ echo "${BLUE}[ INFO ]${NORMAL} expect fastboot erase ${scratch_partition} to fail" >&2
+ fastboot erase ${scratch_partition} &&
+ ( fastboot reboot || true) &&
+ die "fastboot can erase ${scratch_partition}"
+ fi
+ echo "${BLUE}[ INFO ]${NORMAL} expect fastboot format ${scratch_partition} to fail" >&2
+ fastboot format ${scratch_partition} &&
+ ( fastboot reboot || true) &&
+ die "fastboot can format ${scratch_partition}"
+ fi
+ fastboot reboot ||
+ die "can not reboot out of fastboot"
+ echo "${ORANGE}[ WARNING ]${NORMAL} adb after fastboot ... waiting 2 minutes"
+ adb_wait 2m ||
+ die "did not reboot after flash"
+ if ${overlayfs_needed}; then
+ adb_root &&
+ D=`adb_sh df -k </dev/null` &&
+ H=`echo "${D}" | head -1` &&
+ D=`echo "${D}" | grep "^overlay "` &&
+ echo "${H}" &&
+ echo "${D}" &&
+ echo "${D}" | grep "^overlay .* /system\$" >/dev/null ||
+ die "overlay /system takeover after flash vendor"
+ echo "${D}" | grep "^overlay .* /vendor\$" >/dev/null &&
+ die "overlay supposed to be minus /vendor takeover after flash vendor"
+ fi
+ B="`adb_cat /system/hello`" ||
+ die "re-read /system/hello after flash vendor"
+ check_eq "${A}" "${B}" system after flash vendor
+ adb_root ||
+ die "adb root"
+ B="`adb_cat /vendor/hello`" &&
+ die "re-read /vendor/hello after flash vendor"
+ check_eq "cat: /vendor/hello: No such file or directory" "${B}" vendor after flash vendor
+fi
+
+echo "${GREEN}[ RUN ]${NORMAL} remove test content (cleanup)" >&2
T=`adb_date`
adb remount &&
@@ -423,33 +633,41 @@
adb_sh rm /system/hello </dev/null ||
die -t ${T} "cleanup hello"
B="`adb_cat /system/hello`" &&
- die "re-read system hello after rm"
+ die "re-read /system/hello after rm"
check_eq "cat: /system/hello: No such file or directory" "${B}" after flash rm
B="`adb_cat /vendor/hello`" &&
- die "re-read vendor hello after rm"
+ die "re-read /vendor/hello after rm"
check_eq "cat: /vendor/hello: No such file or directory" "${B}" after flash rm
-adb reboot-fastboot &&
- dd if=/dev/zero of=adb-remount-test.img bs=4096 count=16 &&
- fastboot_wait 2m ||
- die "reboot into fastbootd"
-fastboot flash scratch adb-remount-test.img
-err=${?}
-rm adb-remount-test.img
-[ 0 -eq ${err} ] ||
- die "fastbootd flash scratch"
-fastboot reboot ||
- die "can not reboot out of fastbootd"
-adb_wait 2m &&
- adb_root ||
- die "did not reboot after flash"
-T=`adb_date`
-D=`adb disable-verity 2>&1`
-err=${?}
-echo "${D}"
-[ ${err} = 0 ] &&
- [ X"${D}" = X"${D##*setup failed}" ] &&
- [ X"${D}" != X"${D##*using overlayfs}" ] ||
- die -t ${T} "setup for overlayfs"
+if [ -n "${scratch_partition}" ]; then
+
+ echo "${GREEN}[ RUN ]${NORMAL} test fastboot flash to ${scratch_partition}" >&2
+
+ adb reboot-fastboot ||
+ die "Reboot into fastbootd"
+ dd if=/dev/zero of=/tmp/adb-remount-test.img bs=4096 count=16 2>/dev/null &&
+ fastboot_wait 2m ||
+ ( rm /tmp/adb-remount-test.img && false) ||
+ die "reboot into fastboot"
+ fastboot flash --force ${scratch_partition} /tmp/adb-remount-test.img
+ err=${?}
+ rm /tmp/adb-remount-test.img
+ fastboot reboot ||
+ die "can not reboot out of fastboot"
+ [ 0 -eq ${err} ] ||
+ die "fastboot flash ${scratch_partition}"
+ adb_wait 2m &&
+ adb_root ||
+ die "did not reboot after flash"
+ T=`adb_date`
+ D=`adb disable-verity 2>&1`
+ err=${?}
+ echo "${D}"
+ [ ${err} = 0 ] &&
+ [ X"${D}" = X"${D##*setup failed}" ] &&
+ [ X"${D}" != X"${D##*using overlayfs}" ] &&
+ echo "${GREEN}[ OK ]${NORMAL} ${scratch_partition} recreated" >&2 ||
+ die -t ${T} "setup for overlayfs"
+fi
echo "${GREEN}[ PASSED ]${NORMAL} adb remount" >&2
diff --git a/init/Android.bp b/init/Android.bp
index ea66ac6..e7b8516 100644
--- a/init/Android.bp
+++ b/init/Android.bp
@@ -19,6 +19,7 @@
cpp_std: "experimental",
sanitize: {
misc_undefined: ["signed-integer-overflow"],
+ address: false, // TODO(b/120561310): Fix ASAN to work without /proc mounted and re-enable.
},
cflags: [
"-DLOG_UEVENTS=0",
diff --git a/init/Android.mk b/init/Android.mk
index 700c81e..bdd0301 100644
--- a/init/Android.mk
+++ b/init/Android.mk
@@ -35,7 +35,6 @@
-Wall -Wextra \
-Wno-unused-parameter \
-Werror \
- -std=gnu++1z \
# --
@@ -70,6 +69,7 @@
$(TARGET_RAMDISK_OUT)/sys \
LOCAL_STATIC_LIBRARIES := \
+ libfs_avb \
libfs_mgr \
libfec \
libfec_rs \
@@ -104,9 +104,6 @@
LOCAL_REQUIRED_MODULES := \
init_second_stage \
-ifeq ($(BOARD_BUILD_SYSTEM_ROOT_IMAGE),true)
-LOCAL_POST_INSTALL_CMD := ln -sf /system/bin/init $(TARGET_ROOT_OUT)/init
-endif
include $(BUILD_PHONY_PACKAGE)
include $(CLEAR_VARS)
diff --git a/init/builtins.cpp b/init/builtins.cpp
index 6eb65b2..7fd4e27 100644
--- a/init/builtins.cpp
+++ b/init/builtins.cpp
@@ -473,9 +473,10 @@
// Only needed if someone explicitly changes the default log level in their init.rc.
android::base::ScopedLogSeverity info(android::base::INFO);
- struct fstab* fstab = fs_mgr_read_fstab(fstabfile);
- int child_ret = fs_mgr_mount_all(fstab, mount_mode);
- fs_mgr_free_fstab(fstab);
+ Fstab fstab;
+ ReadFstabFromFile(fstabfile, &fstab);
+
+ int child_ret = fs_mgr_mount_all(&fstab, mount_mode);
if (child_ret == -1) {
PLOG(ERROR) << "fs_mgr_mount_all returned an error";
}
@@ -612,14 +613,15 @@
}
static Result<Success> do_swapon_all(const BuiltinArguments& args) {
- struct fstab *fstab;
- int ret;
+ Fstab fstab;
+ if (!ReadFstabFromFile(args[1], &fstab)) {
+ return Error() << "Could not read fstab '" << args[1] << "'";
+ }
- fstab = fs_mgr_read_fstab(args[1].c_str());
- ret = fs_mgr_swapon_all(fstab);
- fs_mgr_free_fstab(fstab);
+ if (!fs_mgr_swapon_all(fstab)) {
+ return Error() << "fs_mgr_swapon_all() failed";
+ }
- if (ret != 0) return Error() << "fs_mgr_swapon_all() failed";
return Success();
}
@@ -733,13 +735,10 @@
return Success();
}
-static void verity_update_property(fstab_rec *fstab, const char *mount_point,
- int mode, int status) {
- property_set("partition."s + mount_point + ".verified", std::to_string(mode));
-}
-
static Result<Success> do_verity_update_state(const BuiltinArguments& args) {
- if (!fs_mgr_update_verity_state(verity_update_property)) {
+ if (!fs_mgr_update_verity_state([](const std::string& mount_point, int mode) {
+ property_set("partition." + mount_point + ".verified", std::to_string(mode));
+ })) {
return Error() << "fs_mgr_update_verity_state() failed";
}
return Success();
diff --git a/init/first_stage_mount.cpp b/init/first_stage_mount.cpp
index a3257f5..acefdf0 100644
--- a/init/first_stage_mount.cpp
+++ b/init/first_stage_mount.cpp
@@ -30,8 +30,8 @@
#include <android-base/file.h>
#include <android-base/logging.h>
#include <android-base/strings.h>
+#include <fs_avb/fs_avb.h>
#include <fs_mgr.h>
-#include <fs_mgr_avb.h>
#include <fs_mgr_dm_linear.h>
#include <fs_mgr_overlayfs.h>
#include <liblp/liblp.h>
@@ -42,7 +42,12 @@
#include "uevent_listener.h"
#include "util.h"
+using android::base::ReadFileToString;
+using android::base::Split;
using android::base::Timer;
+using android::fs_mgr::AvbHandle;
+using android::fs_mgr::AvbHashtreeResult;
+using android::fs_mgr::AvbUniquePtr;
using namespace std::literals;
@@ -53,7 +58,7 @@
// ------------------
class FirstStageMount {
public:
- FirstStageMount();
+ FirstStageMount(Fstab fstab);
virtual ~FirstStageMount() = default;
// The factory method to create either FirstStageMountVBootV1 or FirstStageMountVBootV2
@@ -67,8 +72,10 @@
bool InitRequiredDevices();
bool InitMappedDevice(const std::string& verity_device);
bool CreateLogicalPartitions();
- bool MountPartition(fstab_rec* fstab_rec);
+ bool MountPartition(FstabEntry* fstab_entry);
bool MountPartitions();
+ bool TrySwitchSystemAsRoot();
+ bool TrySkipMountingPartitions();
bool IsDmLinearEnabled();
bool GetDmLinearMetadataDevice();
bool InitDmLinearBackingDevices(const android::fs_mgr::LpMetadata& metadata);
@@ -77,13 +84,12 @@
// Pure virtual functions.
virtual bool GetDmVerityDevices() = 0;
- virtual bool SetUpDmVerity(fstab_rec* fstab_rec) = 0;
+ virtual bool SetUpDmVerity(FstabEntry* fstab_entry) = 0;
bool need_dm_verity_;
- std::unique_ptr<fstab, decltype(&fs_mgr_free_fstab)> device_tree_fstab_;
+ Fstab fstab_;
std::string lp_metadata_partition_;
- std::vector<fstab_rec*> mount_fstab_recs_;
std::set<std::string> required_devices_partition_names_;
std::string super_partition_name_;
std::unique_ptr<DeviceHandler> device_handler_;
@@ -92,33 +98,37 @@
class FirstStageMountVBootV1 : public FirstStageMount {
public:
- FirstStageMountVBootV1() = default;
+ FirstStageMountVBootV1(Fstab fstab) : FirstStageMount(std::move(fstab)) {}
~FirstStageMountVBootV1() override = default;
protected:
bool GetDmVerityDevices() override;
- bool SetUpDmVerity(fstab_rec* fstab_rec) override;
+ bool SetUpDmVerity(FstabEntry* fstab_entry) override;
};
class FirstStageMountVBootV2 : public FirstStageMount {
public:
friend void SetInitAvbVersionInRecovery();
- FirstStageMountVBootV2();
+ FirstStageMountVBootV2(Fstab fstab);
~FirstStageMountVBootV2() override = default;
protected:
bool GetDmVerityDevices() override;
- bool SetUpDmVerity(fstab_rec* fstab_rec) override;
+ bool SetUpDmVerity(FstabEntry* fstab_entry) override;
bool InitAvbHandle();
- std::string device_tree_vbmeta_parts_;
- FsManagerAvbUniquePtr avb_handle_;
+ std::vector<std::string> vbmeta_partitions_;
+ AvbUniquePtr avb_handle_;
};
// Static Functions
// ----------------
-static inline bool IsDtVbmetaCompatible() {
+static inline bool IsDtVbmetaCompatible(const Fstab& fstab) {
+ if (std::any_of(fstab.begin(), fstab.end(),
+ [](const auto& entry) { return entry.fs_mgr_flags.avb; })) {
+ return true;
+ }
return is_android_dt_value_expected("vbmeta/compatible", "android,vbmeta");
}
@@ -126,20 +136,26 @@
return access("/system/bin/recovery", F_OK) == 0;
}
+static Fstab ReadFirstStageFstab() {
+ Fstab fstab;
+ if (!ReadFstabFromDt(&fstab)) {
+ if (ReadDefaultFstab(&fstab)) {
+ fstab.erase(std::remove_if(fstab.begin(), fstab.end(),
+ [](const auto& entry) {
+ return !entry.fs_mgr_flags.first_stage_mount;
+ }),
+ fstab.end());
+ } else {
+ LOG(INFO) << "Failed to fstab for first stage mount";
+ }
+ }
+ return fstab;
+}
+
// Class Definitions
// -----------------
-FirstStageMount::FirstStageMount()
- : need_dm_verity_(false), device_tree_fstab_(fs_mgr_read_fstab_dt(), fs_mgr_free_fstab) {
- if (device_tree_fstab_) {
- // Stores device_tree_fstab_->recs[] into mount_fstab_recs_ (vector<fstab_rec*>)
- // for easier manipulation later, e.g., range-base for loop.
- for (int i = 0; i < device_tree_fstab_->num_entries; i++) {
- mount_fstab_recs_.push_back(&device_tree_fstab_->recs[i]);
- }
- } else {
- LOG(INFO) << "Failed to read fstab from device tree";
- }
-
+FirstStageMount::FirstStageMount(Fstab fstab)
+ : need_dm_verity_(false), fstab_(std::move(fstab)), uevent_listener_(16 * 1024 * 1024) {
auto boot_devices = fs_mgr_get_boot_devices();
device_handler_ = std::make_unique<DeviceHandler>(
std::vector<Permissions>{}, std::vector<SysfsPermissions>{}, std::vector<Subsystem>{},
@@ -149,15 +165,16 @@
}
std::unique_ptr<FirstStageMount> FirstStageMount::Create() {
- if (IsDtVbmetaCompatible()) {
- return std::make_unique<FirstStageMountVBootV2>();
+ auto fstab = ReadFirstStageFstab();
+ if (IsDtVbmetaCompatible(fstab)) {
+ return std::make_unique<FirstStageMountVBootV2>(std::move(fstab));
} else {
- return std::make_unique<FirstStageMountVBootV1>();
+ return std::make_unique<FirstStageMountVBootV1>(std::move(fstab));
}
}
bool FirstStageMount::DoFirstStageMount() {
- if (!IsDmLinearEnabled() && mount_fstab_recs_.empty()) {
+ if (!IsDmLinearEnabled() && fstab_.empty()) {
// Nothing to mount.
LOG(INFO) << "First stage mount skipped (missing/incompatible/empty fstab in device tree)";
return true;
@@ -177,8 +194,8 @@
}
bool FirstStageMount::IsDmLinearEnabled() {
- for (auto fstab_rec : mount_fstab_recs_) {
- if (fs_mgr_is_logical(fstab_rec)) return true;
+ for (const auto& entry : fstab_) {
+ if (entry.fs_mgr_flags.logical) return true;
}
return false;
}
@@ -249,9 +266,10 @@
}
bool FirstStageMount::InitDmLinearBackingDevices(const android::fs_mgr::LpMetadata& metadata) {
- auto partition_names = GetBlockDevicePartitionNames(metadata);
+ auto partition_names = android::fs_mgr::GetBlockDevicePartitionNames(metadata);
for (const auto& partition_name : partition_names) {
- if (partition_name == lp_metadata_partition_) {
+ const auto super_device = android::fs_mgr::GetMetadataSuperBlockDevice(metadata);
+ if (partition_name == android::fs_mgr::GetBlockDevicePartitionName(*super_device)) {
continue;
}
required_devices_partition_names_.emplace(partition_name);
@@ -289,7 +307,7 @@
if (!InitDmLinearBackingDevices(*metadata.get())) {
return false;
}
- return android::fs_mgr::CreateLogicalPartitions(*metadata.get());
+ return android::fs_mgr::CreateLogicalPartitions(*metadata.get(), lp_metadata_partition_);
}
ListenerAction FirstStageMount::HandleBlockDevice(const std::string& name, const Uevent& uevent) {
@@ -363,57 +381,102 @@
return true;
}
-bool FirstStageMount::MountPartition(fstab_rec* fstab_rec) {
- if (fs_mgr_is_logical(fstab_rec)) {
- if (!fs_mgr_update_logical_partition(fstab_rec)) {
+bool FirstStageMount::MountPartition(FstabEntry* fstab_entry) {
+ if (fstab_entry->fs_mgr_flags.logical) {
+ if (!fs_mgr_update_logical_partition(fstab_entry)) {
return false;
}
- if (!InitMappedDevice(fstab_rec->blk_device)) {
+ if (!InitMappedDevice(fstab_entry->blk_device)) {
return false;
}
}
- if (!SetUpDmVerity(fstab_rec)) {
- PLOG(ERROR) << "Failed to setup verity for '" << fstab_rec->mount_point << "'";
+ if (!SetUpDmVerity(fstab_entry)) {
+ PLOG(ERROR) << "Failed to setup verity for '" << fstab_entry->mount_point << "'";
return false;
}
- if (fs_mgr_do_mount_one(fstab_rec)) {
- PLOG(ERROR) << "Failed to mount '" << fstab_rec->mount_point << "'";
+ if (fs_mgr_do_mount_one(*fstab_entry)) {
+ PLOG(ERROR) << "Failed to mount '" << fstab_entry->mount_point << "'";
return false;
}
return true;
}
-bool FirstStageMount::MountPartitions() {
- // If system is in the fstab then we're not a system-as-root device, and in
- // this case, we mount system first then pivot to it. From that point on,
- // we are effectively identical to a system-as-root device.
- auto system_partition =
- std::find_if(mount_fstab_recs_.begin(), mount_fstab_recs_.end(),
- [](const auto& rec) { return rec->mount_point == "/system"s; });
+// If system is in the fstab then we're not a system-as-root device, and in
+// this case, we mount system first then pivot to it. From that point on,
+// we are effectively identical to a system-as-root device.
+bool FirstStageMount::TrySwitchSystemAsRoot() {
+ auto system_partition = std::find_if(fstab_.begin(), fstab_.end(), [](const auto& entry) {
+ return entry.mount_point == "/system";
+ });
- if (system_partition != mount_fstab_recs_.end()) {
- if (!MountPartition(*system_partition)) {
+ if (system_partition != fstab_.end()) {
+ if (!MountPartition(&(*system_partition))) {
return false;
}
- SwitchRoot((*system_partition)->mount_point);
+ SwitchRoot((*system_partition).mount_point);
- mount_fstab_recs_.erase(system_partition);
+ fstab_.erase(system_partition);
}
- for (auto fstab_rec : mount_fstab_recs_) {
- if (!MountPartition(fstab_rec) && !fs_mgr_is_nofail(fstab_rec)) {
+ return true;
+}
+
+// For GSI to skip mounting /product and /product_services, until there are
+// well-defined interfaces between them and /system. Otherwise, the GSI flashed
+// on /system might not be able to work with /product and /product_services.
+// When they're skipped here, /system/product and /system/product_services in
+// GSI will be used.
+bool FirstStageMount::TrySkipMountingPartitions() {
+ constexpr const char kSkipMountConfig[] = "/system/etc/init/config/skip_mount.cfg";
+
+ std::string skip_config;
+ if (!ReadFileToString(kSkipMountConfig, &skip_config)) {
+ return true;
+ }
+
+ for (const auto& skip_mount_point : Split(skip_config, "\n")) {
+ if (skip_mount_point.empty()) {
+ continue;
+ }
+ auto removing_entry =
+ std::find_if(fstab_.begin(), fstab_.end(), [&skip_mount_point](const auto& entry) {
+ return entry.mount_point == skip_mount_point;
+ });
+ if (removing_entry != fstab_.end()) {
+ fstab_.erase(removing_entry);
+ LOG(INFO) << "Skip mounting partition: " << skip_mount_point;
+ }
+ }
+
+ return true;
+}
+
+bool FirstStageMount::MountPartitions() {
+ if (!TrySwitchSystemAsRoot()) return false;
+
+ if (!TrySkipMountingPartitions()) return false;
+
+ for (auto& fstab_entry : fstab_) {
+ if (!MountPartition(&fstab_entry) && !fstab_entry.fs_mgr_flags.no_fail) {
return false;
}
}
// heads up for instantiating required device(s) for overlayfs logic
- const auto devices = fs_mgr_overlayfs_required_devices(device_tree_fstab_.get());
+ const auto devices = fs_mgr_overlayfs_required_devices(&fstab_);
for (auto const& device : devices) {
- InitMappedDevice(device);
+ if (android::base::StartsWith(device, "/dev/block/by-name/")) {
+ required_devices_partition_names_.emplace(basename(device.c_str()));
+ auto uevent_callback = [this](const Uevent& uevent) { return UeventCallback(uevent); };
+ uevent_listener_.RegenerateUevents(uevent_callback);
+ uevent_listener_.Poll(uevent_callback, 10s);
+ } else {
+ InitMappedDevice(device);
+ }
}
- fs_mgr_overlayfs_mount_all(device_tree_fstab_.get());
+ fs_mgr_overlayfs_mount_all(&fstab_);
return true;
}
@@ -422,25 +485,25 @@
std::string verity_loc_device;
need_dm_verity_ = false;
- for (auto fstab_rec : mount_fstab_recs_) {
+ for (const auto& fstab_entry : fstab_) {
// Don't allow verifyatboot in the first stage.
- if (fs_mgr_is_verifyatboot(fstab_rec)) {
+ if (fstab_entry.fs_mgr_flags.verify_at_boot) {
LOG(ERROR) << "Partitions can't be verified at boot";
return false;
}
// Checks for verified partitions.
- if (fs_mgr_is_verified(fstab_rec)) {
+ if (fstab_entry.fs_mgr_flags.verify) {
need_dm_verity_ = true;
}
// Checks if verity metadata is on a separate partition. Note that it is
// not partition specific, so there must be only one additional partition
// that carries verity state.
- if (fstab_rec->verity_loc) {
+ if (!fstab_entry.verity_loc.empty()) {
if (verity_loc_device.empty()) {
- verity_loc_device = fstab_rec->verity_loc;
- } else if (verity_loc_device != fstab_rec->verity_loc) {
+ verity_loc_device = fstab_entry.verity_loc;
+ } else if (verity_loc_device != fstab_entry.verity_loc) {
LOG(ERROR) << "More than one verity_loc found: " << verity_loc_device << ", "
- << fstab_rec->verity_loc;
+ << fstab_entry.verity_loc;
return false;
}
}
@@ -448,9 +511,9 @@
// Includes the partition names of fstab records and verity_loc_device (if any).
// Notes that fstab_rec->blk_device has A/B suffix updated by fs_mgr when A/B is used.
- for (auto fstab_rec : mount_fstab_recs_) {
- if (!fs_mgr_is_logical(fstab_rec)) {
- required_devices_partition_names_.emplace(basename(fstab_rec->blk_device));
+ for (const auto& fstab_entry : fstab_) {
+ if (!fstab_entry.fs_mgr_flags.logical) {
+ required_devices_partition_names_.emplace(basename(fstab_entry.blk_device.c_str()));
}
}
@@ -461,19 +524,19 @@
return true;
}
-bool FirstStageMountVBootV1::SetUpDmVerity(fstab_rec* fstab_rec) {
- if (fs_mgr_is_verified(fstab_rec)) {
- int ret = fs_mgr_setup_verity(fstab_rec, false /* wait_for_verity_dev */);
+bool FirstStageMountVBootV1::SetUpDmVerity(FstabEntry* fstab_entry) {
+ if (fstab_entry->fs_mgr_flags.verify) {
+ int ret = fs_mgr_setup_verity(fstab_entry, false /* wait_for_verity_dev */);
switch (ret) {
case FS_MGR_SETUP_VERITY_SKIPPED:
case FS_MGR_SETUP_VERITY_DISABLED:
- LOG(INFO) << "Verity disabled/skipped for '" << fstab_rec->mount_point << "'";
+ LOG(INFO) << "Verity disabled/skipped for '" << fstab_entry->mount_point << "'";
return true;
case FS_MGR_SETUP_VERITY_SUCCESS:
// The exact block device name (fstab_rec->blk_device) is changed to
// "/dev/block/dm-XX". Needs to create it because ueventd isn't started in init
// first stage.
- return InitMappedDevice(fstab_rec->blk_device);
+ return InitMappedDevice(fstab_entry->blk_device);
default:
return false;
}
@@ -481,22 +544,27 @@
return true; // Returns true to mount the partition.
}
-// FirstStageMountVBootV2 constructor.
-// Gets the vbmeta partitions from device tree.
-// /{
-// firmware {
-// android {
-// vbmeta {
-// compatible = "android,vbmeta";
-// parts = "vbmeta,boot,system,vendor"
-// };
-// };
-// };
-// }
-FirstStageMountVBootV2::FirstStageMountVBootV2() : avb_handle_(nullptr) {
- if (!read_android_dt_file("vbmeta/parts", &device_tree_vbmeta_parts_)) {
- PLOG(ERROR) << "Failed to read vbmeta/parts from device tree";
- return;
+// First retrieve any vbmeta partitions from device tree (legacy) then read through the fstab
+// for any further vbmeta partitions.
+FirstStageMountVBootV2::FirstStageMountVBootV2(Fstab fstab)
+ : FirstStageMount(std::move(fstab)), avb_handle_(nullptr) {
+ std::string device_tree_vbmeta_parts;
+ read_android_dt_file("vbmeta/parts", &device_tree_vbmeta_parts);
+
+ for (auto&& partition : Split(device_tree_vbmeta_parts, ",")) {
+ if (!partition.empty()) {
+ vbmeta_partitions_.emplace_back(std::move(partition));
+ }
+ }
+
+ for (const auto& entry : fstab_) {
+ if (!entry.vbmeta_partition.empty()) {
+ vbmeta_partitions_.emplace_back(entry.vbmeta_partition);
+ }
+ }
+
+ if (vbmeta_partitions_.empty()) {
+ LOG(ERROR) << "Failed to read vbmeta partitions.";
}
}
@@ -506,30 +574,27 @@
std::set<std::string> logical_partitions;
// fstab_rec->blk_device has A/B suffix.
- for (auto fstab_rec : mount_fstab_recs_) {
- if (fs_mgr_is_avb(fstab_rec)) {
+ for (const auto& fstab_entry : fstab_) {
+ if (fstab_entry.fs_mgr_flags.avb) {
need_dm_verity_ = true;
}
- if (fs_mgr_is_logical(fstab_rec)) {
+ if (fstab_entry.fs_mgr_flags.logical) {
// Don't try to find logical partitions via uevent regeneration.
- logical_partitions.emplace(basename(fstab_rec->blk_device));
+ logical_partitions.emplace(basename(fstab_entry.blk_device.c_str()));
} else {
- required_devices_partition_names_.emplace(basename(fstab_rec->blk_device));
+ required_devices_partition_names_.emplace(basename(fstab_entry.blk_device.c_str()));
}
}
- // libavb verifies AVB metadata on all verified partitions at once.
- // e.g., The device_tree_vbmeta_parts_ will be "vbmeta,boot,system,vendor"
- // for libavb to verify metadata, even if there is only /vendor in the
- // above mount_fstab_recs_.
+ // Any partitions needed for verifying the partitions used in first stage mount, e.g. vbmeta
+ // must be provided as vbmeta_partitions.
if (need_dm_verity_) {
- if (device_tree_vbmeta_parts_.empty()) {
- LOG(ERROR) << "Missing vbmeta parts in device tree";
+ if (vbmeta_partitions_.empty()) {
+ LOG(ERROR) << "Missing vbmeta partitions";
return false;
}
- std::vector<std::string> partitions = android::base::Split(device_tree_vbmeta_parts_, ",");
std::string ab_suffix = fs_mgr_get_slot_suffix();
- for (const auto& partition : partitions) {
+ for (const auto& partition : vbmeta_partitions_) {
std::string partition_name = partition + ab_suffix;
if (logical_partitions.count(partition_name)) {
continue;
@@ -544,19 +609,19 @@
return true;
}
-bool FirstStageMountVBootV2::SetUpDmVerity(fstab_rec* fstab_rec) {
- if (fs_mgr_is_avb(fstab_rec)) {
+bool FirstStageMountVBootV2::SetUpDmVerity(FstabEntry* fstab_entry) {
+ if (fstab_entry->fs_mgr_flags.avb) {
if (!InitAvbHandle()) return false;
- SetUpAvbHashtreeResult hashtree_result =
- avb_handle_->SetUpAvbHashtree(fstab_rec, false /* wait_for_verity_dev */);
+ AvbHashtreeResult hashtree_result =
+ avb_handle_->SetUpAvbHashtree(fstab_entry, false /* wait_for_verity_dev */);
switch (hashtree_result) {
- case SetUpAvbHashtreeResult::kDisabled:
+ case AvbHashtreeResult::kDisabled:
return true; // Returns true to mount the partition.
- case SetUpAvbHashtreeResult::kSuccess:
+ case AvbHashtreeResult::kSuccess:
// The exact block device name (fstab_rec->blk_device) is changed to
// "/dev/block/dm-XX". Needs to create it because ueventd isn't started in init
// first stage.
- return InitMappedDevice(fstab_rec->blk_device);
+ return InitMappedDevice(fstab_entry->blk_device);
default:
return false;
}
@@ -567,10 +632,10 @@
bool FirstStageMountVBootV2::InitAvbHandle() {
if (avb_handle_) return true; // Returns true if the handle is already initialized.
- avb_handle_ = FsManagerAvbHandle::Open();
+ avb_handle_ = AvbHandle::Open();
if (!avb_handle_) {
- PLOG(ERROR) << "Failed to open FsManagerAvbHandle";
+ PLOG(ERROR) << "Failed to open AvbHandle";
return false;
}
// Sets INIT_AVB_VERSION here for init to set ro.boot.avb_version in the second stage.
@@ -602,25 +667,27 @@
return;
}
- if (!IsDtVbmetaCompatible()) {
+ auto fstab = ReadFirstStageFstab();
+
+ if (!IsDtVbmetaCompatible(fstab)) {
LOG(INFO) << "Skipped setting INIT_AVB_VERSION (not vbmeta compatible)";
return;
}
- // Initializes required devices for the subsequent FsManagerAvbHandle::Open()
+ // Initializes required devices for the subsequent AvbHandle::Open()
// to verify AVB metadata on all partitions in the verified chain.
// We only set INIT_AVB_VERSION when the AVB verification succeeds, i.e., the
// Open() function returns a valid handle.
// We don't need to mount partitions here in recovery mode.
- FirstStageMountVBootV2 avb_first_mount;
+ FirstStageMountVBootV2 avb_first_mount(std::move(fstab));
if (!avb_first_mount.InitDevices()) {
LOG(ERROR) << "Failed to init devices for INIT_AVB_VERSION";
return;
}
- FsManagerAvbUniquePtr avb_handle = FsManagerAvbHandle::Open();
+ AvbUniquePtr avb_handle = AvbHandle::Open();
if (!avb_handle) {
- PLOG(ERROR) << "Failed to open FsManagerAvbHandle for INIT_AVB_VERSION";
+ PLOG(ERROR) << "Failed to open AvbHandle for INIT_AVB_VERSION";
return;
}
setenv("INIT_AVB_VERSION", avb_handle->avb_version().c_str(), 1);
diff --git a/init/uevent_listener.cpp b/init/uevent_listener.cpp
index 8cf2128..62cd2be 100644
--- a/init/uevent_listener.cpp
+++ b/init/uevent_listener.cpp
@@ -86,9 +86,8 @@
}
}
-UeventListener::UeventListener() {
- // is 2MB enough? udev uses 128MB!
- device_fd_.reset(uevent_open_socket(2 * 1024 * 1024, true));
+UeventListener::UeventListener(size_t uevent_socket_rcvbuf_size) {
+ device_fd_.reset(uevent_open_socket(uevent_socket_rcvbuf_size, true));
if (device_fd_ == -1) {
LOG(FATAL) << "Could not open uevent socket";
}
diff --git a/init/uevent_listener.h b/init/uevent_listener.h
index 5b453fe..aea094e 100644
--- a/init/uevent_listener.h
+++ b/init/uevent_listener.h
@@ -41,7 +41,7 @@
class UeventListener {
public:
- UeventListener();
+ UeventListener(size_t uevent_socket_rcvbuf_size);
void RegenerateUevents(const ListenerCallback& callback) const;
ListenerAction RegenerateUeventsForPath(const std::string& path,
diff --git a/init/ueventd.cpp b/init/ueventd.cpp
index 66491dd..7545d53 100644
--- a/init/ueventd.cpp
+++ b/init/ueventd.cpp
@@ -233,29 +233,26 @@
SelabelInitialize();
std::vector<std::unique_ptr<UeventHandler>> uevent_handlers;
- UeventListener uevent_listener;
- {
- // Keep the current product name base configuration so we remain backwards compatible and
- // allow it to override everything.
- // TODO: cleanup platform ueventd.rc to remove vendor specific device node entries (b/34968103)
- auto hardware = android::base::GetProperty("ro.hardware", "");
+ // Keep the current product name base configuration so we remain backwards compatible and
+ // allow it to override everything.
+ // TODO: cleanup platform ueventd.rc to remove vendor specific device node entries (b/34968103)
+ auto hardware = android::base::GetProperty("ro.hardware", "");
- auto ueventd_configuration =
- ParseConfig({"/ueventd.rc", "/vendor/ueventd.rc", "/odm/ueventd.rc",
- "/ueventd." + hardware + ".rc"});
+ auto ueventd_configuration = ParseConfig({"/ueventd.rc", "/vendor/ueventd.rc",
+ "/odm/ueventd.rc", "/ueventd." + hardware + ".rc"});
- uevent_handlers.emplace_back(std::make_unique<DeviceHandler>(
- std::move(ueventd_configuration.dev_permissions),
- std::move(ueventd_configuration.sysfs_permissions),
- std::move(ueventd_configuration.subsystems), fs_mgr_get_boot_devices(), true));
- uevent_handlers.emplace_back(std::make_unique<FirmwareHandler>(
- std::move(ueventd_configuration.firmware_directories)));
+ uevent_handlers.emplace_back(std::make_unique<DeviceHandler>(
+ std::move(ueventd_configuration.dev_permissions),
+ std::move(ueventd_configuration.sysfs_permissions),
+ std::move(ueventd_configuration.subsystems), fs_mgr_get_boot_devices(), true));
+ uevent_handlers.emplace_back(std::make_unique<FirmwareHandler>(
+ std::move(ueventd_configuration.firmware_directories)));
- if (ueventd_configuration.enable_modalias_handling) {
- uevent_handlers.emplace_back(std::make_unique<ModaliasHandler>());
- }
+ if (ueventd_configuration.enable_modalias_handling) {
+ uevent_handlers.emplace_back(std::make_unique<ModaliasHandler>());
}
+ UeventListener uevent_listener(ueventd_configuration.uevent_socket_rcvbuf_size);
if (access(COLDBOOT_DONE, F_OK) != 0) {
ColdBoot cold_boot(uevent_listener, uevent_handlers);
diff --git a/init/ueventd_parser.cpp b/init/ueventd_parser.cpp
index 677938e..aac3fe5 100644
--- a/init/ueventd_parser.cpp
+++ b/init/ueventd_parser.cpp
@@ -19,9 +19,13 @@
#include <grp.h>
#include <pwd.h>
+#include <android-base/parseint.h>
+
#include "keyword_map.h"
#include "parser.h"
+using android::base::ParseByteCount;
+
namespace android {
namespace init {
@@ -101,6 +105,22 @@
return Success();
}
+Result<Success> ParseUeventSocketRcvbufSizeLine(std::vector<std::string>&& args,
+ size_t* uevent_socket_rcvbuf_size) {
+ if (args.size() != 2) {
+ return Error() << "uevent_socket_rcvbuf_size lines take exactly one parameter";
+ }
+
+ size_t parsed_size;
+ if (!ParseByteCount(args[1], &parsed_size)) {
+ return Error() << "could not parse size '" << args[1] << "' for uevent_socket_rcvbuf_line";
+ }
+
+ *uevent_socket_rcvbuf_size = parsed_size;
+
+ return Success();
+}
+
class SubsystemParser : public SectionParser {
public:
SubsystemParser(std::vector<Subsystem>* subsystems) : subsystems_(subsystems) {}
@@ -202,6 +222,9 @@
parser.AddSingleLineParser("modalias_handling",
std::bind(ParseModaliasHandlingLine, _1,
&ueventd_configuration.enable_modalias_handling));
+ parser.AddSingleLineParser("uevent_socket_rcvbuf_size",
+ std::bind(ParseUeventSocketRcvbufSizeLine, _1,
+ &ueventd_configuration.uevent_socket_rcvbuf_size));
for (const auto& config : configs) {
parser.ParseConfig(config);
diff --git a/init/ueventd_parser.h b/init/ueventd_parser.h
index 7d30edf..d476dec 100644
--- a/init/ueventd_parser.h
+++ b/init/ueventd_parser.h
@@ -31,6 +31,7 @@
std::vector<Permissions> dev_permissions;
std::vector<std::string> firmware_directories;
bool enable_modalias_handling = false;
+ size_t uevent_socket_rcvbuf_size = 0;
};
UeventdConfiguration ParseConfig(const std::vector<std::string>& configs);
diff --git a/init/ueventd_parser_test.cpp b/init/ueventd_parser_test.cpp
index c3af341..9c1cedf 100644
--- a/init/ueventd_parser_test.cpp
+++ b/init/ueventd_parser_test.cpp
@@ -138,6 +138,15 @@
TestUeventdFile(ueventd_file, {{}, {}, {}, firmware_directories});
}
+TEST(ueventd_parser, UeventSocketRcvbufSize) {
+ auto ueventd_file = R"(
+uevent_socket_rcvbuf_size 8k
+uevent_socket_rcvbuf_size 8M
+)";
+
+ TestUeventdFile(ueventd_file, {{}, {}, {}, {}, false, 8 * 1024 * 1024});
+}
+
TEST(ueventd_parser, AllTogether) {
auto ueventd_file = R"(
@@ -169,6 +178,8 @@
/sys/devices/virtual/*/input poll_delay 0660 root input
firmware_directories /more
+uevent_socket_rcvbuf_size 6M
+
#ending comment
)";
@@ -197,8 +208,10 @@
"/more",
};
- TestUeventdFile(ueventd_file,
- {subsystems, sysfs_permissions, permissions, firmware_directories});
+ size_t uevent_socket_rcvbuf_size = 6 * 1024 * 1024;
+
+ TestUeventdFile(ueventd_file, {subsystems, sysfs_permissions, permissions, firmware_directories,
+ false, uevent_socket_rcvbuf_size});
}
// All of these lines are ill-formed, so test that there is 0 output.
@@ -213,6 +226,8 @@
/sys/devices/platform/trusty.* trusty_version 0440 baduidbad log
/sys/devices/platform/trusty.* trusty_version 0440 root baduidbad
+uevent_socket_rcvbuf_size blah
+
subsystem #no name
)";
diff --git a/libappfuse/FuseBridgeLoop.cc b/libappfuse/FuseBridgeLoop.cc
index 8b0c53e..ac94e69 100644
--- a/libappfuse/FuseBridgeLoop.cc
+++ b/libappfuse/FuseBridgeLoop.cc
@@ -311,7 +311,7 @@
};
FuseBridgeLoop::FuseBridgeLoop() : opened_(true) {
- base::unique_fd epoll_fd(epoll_create1(/* no flag */ 0));
+ base::unique_fd epoll_fd(epoll_create1(EPOLL_CLOEXEC));
if (epoll_fd.get() == -1) {
PLOG(ERROR) << "Failed to open FD for epoll";
opened_ = false;
diff --git a/libbacktrace/BacktraceCurrent.cpp b/libbacktrace/BacktraceCurrent.cpp
index 39cb995..038b59e 100644
--- a/libbacktrace/BacktraceCurrent.cpp
+++ b/libbacktrace/BacktraceCurrent.cpp
@@ -76,7 +76,7 @@
return UnwindFromContext(num_ignore_frames, ucontext);
}
- if (Tid() != android::base::GetThreadId()) {
+ if (Tid() != static_cast<pid_t>(android::base::GetThreadId())) {
return UnwindThread(num_ignore_frames);
}
diff --git a/libcutils/fs_config.cpp b/libcutils/fs_config.cpp
index ee52f5e..1490fbc 100644
--- a/libcutils/fs_config.cpp
+++ b/libcutils/fs_config.cpp
@@ -84,7 +84,7 @@
{ 00750, AID_ROOT, AID_SHELL, 0, "sbin" },
{ 00777, AID_ROOT, AID_ROOT, 0, "sdcard" },
{ 00751, AID_ROOT, AID_SDCARD_R, 0, "storage" },
- { 00751, AID_ROOT, AID_SHELL, 0, "system/bin" },
+ { 00755, AID_ROOT, AID_SHELL, 0, "system/bin" },
{ 00755, AID_ROOT, AID_ROOT, 0, "system/etc/ppp" },
{ 00755, AID_ROOT, AID_SHELL, 0, "system/vendor" },
{ 00751, AID_ROOT, AID_SHELL, 0, "system/xbin" },
@@ -108,7 +108,9 @@
// although the developer is advised to restrict the scope to the /vendor or
// oem/ file-system since the intent is to provide support for customized
// portions of a separate vendor.img or oem.img. Has to remain open so that
-// customization can also land on /system/vendor, /system/oem or /system/odm.
+// customization can also land on /system/vendor, /system/oem, /system/odm,
+// /system/product or /system/product_services.
+//
// We expect build-time checking or filtering when constructing the associated
// fs_config_* files (see build/tools/fs_config/fs_config_generate.c)
static const char ven_conf_dir[] = "/vendor/etc/fs_config_dirs";
@@ -117,11 +119,17 @@
static const char oem_conf_file[] = "/oem/etc/fs_config_files";
static const char odm_conf_dir[] = "/odm/etc/fs_config_dirs";
static const char odm_conf_file[] = "/odm/etc/fs_config_files";
+static const char product_conf_dir[] = "/product/etc/fs_config_dirs";
+static const char product_conf_file[] = "/product/etc/fs_config_files";
+static const char product_services_conf_dir[] = "/product_services/etc/fs_config_dirs";
+static const char product_services_conf_file[] = "/product_services/etc/fs_config_files";
static const char* conf[][2] = {
- {sys_conf_file, sys_conf_dir},
- {ven_conf_file, ven_conf_dir},
- {oem_conf_file, oem_conf_dir},
- {odm_conf_file, odm_conf_dir},
+ {sys_conf_file, sys_conf_dir},
+ {ven_conf_file, ven_conf_dir},
+ {oem_conf_file, oem_conf_dir},
+ {odm_conf_file, odm_conf_dir},
+ {product_conf_file, product_conf_dir},
+ {product_services_conf_file, product_services_conf_dir},
};
// Do not use android_files to grant Linux capabilities. Use ambient capabilities in their
@@ -150,7 +158,11 @@
{ 00444, AID_ROOT, AID_ROOT, 0, oem_conf_dir + 1 },
{ 00444, AID_ROOT, AID_ROOT, 0, oem_conf_file + 1 },
{ 00600, AID_ROOT, AID_ROOT, 0, "product/build.prop" },
+ { 00444, AID_ROOT, AID_ROOT, 0, product_conf_dir + 1 },
+ { 00444, AID_ROOT, AID_ROOT, 0, product_conf_file + 1 },
{ 00600, AID_ROOT, AID_ROOT, 0, "product_services/build.prop" },
+ { 00444, AID_ROOT, AID_ROOT, 0, product_services_conf_dir + 1 },
+ { 00444, AID_ROOT, AID_ROOT, 0, product_services_conf_file + 1 },
{ 00750, AID_ROOT, AID_SHELL, 0, "sbin/fs_mgr" },
{ 00755, AID_ROOT, AID_SHELL, 0, "system/bin/crash_dump32" },
{ 00755, AID_ROOT, AID_SHELL, 0, "system/bin/crash_dump64" },
@@ -236,10 +248,10 @@
return fd;
}
-// if path is "odm/<stuff>", "oem/<stuff>", "product/<stuff>" or
-// "vendor/<stuff>"
+// if path is "odm/<stuff>", "oem/<stuff>", "product/<stuff>",
+// "product_services/<stuff>" or "vendor/<stuff>"
static bool is_partition(const char* path, size_t len) {
- static const char* partitions[] = {"odm/", "oem/", "product/", "vendor/"};
+ static const char* partitions[] = {"odm/", "oem/", "product/", "product_services/", "vendor/"};
for (size_t i = 0; i < (sizeof(partitions) / sizeof(partitions[0])); ++i) {
size_t plen = strlen(partitions[i]);
if (len <= plen) continue;
diff --git a/libcutils/include/cutils/partition_utils.h b/libcutils/include/cutils/partition_utils.h
index 7518559..8bc9b48 100644
--- a/libcutils/include/cutils/partition_utils.h
+++ b/libcutils/include/cutils/partition_utils.h
@@ -21,7 +21,7 @@
__BEGIN_DECLS
-int partition_wiped(char *source);
+int partition_wiped(const char* source);
__END_DECLS
diff --git a/libcutils/partition_utils.cpp b/libcutils/partition_utils.cpp
index 2211ff6..b840559 100644
--- a/libcutils/partition_utils.cpp
+++ b/libcutils/partition_utils.cpp
@@ -39,8 +39,7 @@
return ret;
}
-int partition_wiped(char *source)
-{
+int partition_wiped(const char* source) {
uint8_t buf[4096];
int fd, ret;
@@ -67,4 +66,3 @@
return 0;
}
-
diff --git a/libcutils/uevent.cpp b/libcutils/uevent.cpp
index 2dfceed..721de7c 100644
--- a/libcutils/uevent.cpp
+++ b/libcutils/uevent.cpp
@@ -95,6 +95,8 @@
int uevent_open_socket(int buf_sz, bool passcred) {
struct sockaddr_nl addr;
int on = passcred;
+ int buf_sz_readback = 0;
+ socklen_t optlen = sizeof(buf_sz_readback);
int s;
memset(&addr, 0, sizeof(addr));
@@ -105,11 +107,21 @@
s = socket(PF_NETLINK, SOCK_DGRAM | SOCK_CLOEXEC, NETLINK_KOBJECT_UEVENT);
if (s < 0) return -1;
- /* buf_sz should be less than net.core.rmem_max for this to succeed */
- if (setsockopt(s, SOL_SOCKET, SO_RCVBUF, &buf_sz, sizeof(buf_sz)) < 0) {
+ if (setsockopt(s, SOL_SOCKET, SO_RCVBUF, &buf_sz, sizeof(buf_sz)) < 0 ||
+ getsockopt(s, SOL_SOCKET, SO_RCVBUF, &buf_sz_readback, &optlen) < 0) {
close(s);
return -1;
}
+ /* Only if SO_RCVBUF was not effective, try SO_RCVBUFFORCE. Generally, we
+ * want to avoid SO_RCVBUFFORCE, because it generates SELinux denials in
+ * case we don't have CAP_NET_ADMIN. This is the case, for example, for
+ * healthd. */
+ if (buf_sz_readback < 2 * buf_sz) {
+ if (setsockopt(s, SOL_SOCKET, SO_RCVBUFFORCE, &buf_sz, sizeof(buf_sz)) < 0) {
+ close(s);
+ return -1;
+ }
+ }
setsockopt(s, SOL_SOCKET, SO_PASSCRED, &on, sizeof(on));
diff --git a/libmeminfo/Android.bp b/libmeminfo/Android.bp
index aab3743..3e191ad 100644
--- a/libmeminfo/Android.bp
+++ b/libmeminfo/Android.bp
@@ -54,6 +54,11 @@
srcs: [
"libmeminfo_test.cpp"
],
+
+ data: [
+ "testdata1/*",
+ "testdata2/*"
+ ],
}
cc_benchmark {
@@ -67,4 +72,8 @@
"libmeminfo",
"libprocinfo",
],
+
+ data: [
+ "testdata1/*",
+ ],
}
diff --git a/libmeminfo/OWNERS b/libmeminfo/OWNERS
new file mode 100644
index 0000000..26e71fe
--- /dev/null
+++ b/libmeminfo/OWNERS
@@ -0,0 +1 @@
+sspatil@google.com
diff --git a/libmeminfo/include/meminfo/meminfo.h b/libmeminfo/include/meminfo/meminfo.h
index c328648..809054b 100644
--- a/libmeminfo/include/meminfo/meminfo.h
+++ b/libmeminfo/include/meminfo/meminfo.h
@@ -31,6 +31,8 @@
uint64_t pss;
uint64_t uss;
+ uint64_t swap;
+
uint64_t private_clean;
uint64_t private_dirty;
uint64_t shared_clean;
@@ -41,6 +43,7 @@
rss(0),
pss(0),
uss(0),
+ swap(0),
private_clean(0),
private_dirty(0),
shared_clean(0),
@@ -49,7 +52,7 @@
~MemUsage() = default;
void clear() {
- vss = rss = pss = uss = 0;
+ vss = rss = pss = uss = swap = 0;
private_clean = private_dirty = shared_clean = shared_dirty = 0;
}
};
diff --git a/libmeminfo/include/meminfo/procmeminfo.h b/libmeminfo/include/meminfo/procmeminfo.h
index b37c56b..92375d3 100644
--- a/libmeminfo/include/meminfo/procmeminfo.h
+++ b/libmeminfo/include/meminfo/procmeminfo.h
@@ -29,13 +29,16 @@
class ProcMemInfo final {
// Per-process memory accounting
public:
- ProcMemInfo(pid_t pid, bool get_wss = false);
+ // Reset the working set accounting of the process via /proc/<pid>/clear_refs
+ static bool ResetWorkingSet(pid_t pid);
+
+ ProcMemInfo(pid_t pid, bool get_wss = false, uint64_t pgflags = 0, uint64_t pgflags_mask = 0);
const std::vector<Vma>& Maps();
const MemUsage& Usage();
const MemUsage& Wss();
+ const std::vector<uint16_t>& SwapOffsets();
- bool WssReset();
~ProcMemInfo() = default;
private:
@@ -44,11 +47,14 @@
pid_t pid_;
bool get_wss_;
+ uint64_t pgflags_;
+ uint64_t pgflags_mask_;
std::vector<Vma> maps_;
MemUsage usage_;
MemUsage wss_;
+ std::vector<uint16_t> swap_offsets_;
};
} // namespace meminfo
diff --git a/libmeminfo/include/meminfo/sysmeminfo.h b/libmeminfo/include/meminfo/sysmeminfo.h
index f5e05bd..f18ae08 100644
--- a/libmeminfo/include/meminfo/sysmeminfo.h
+++ b/libmeminfo/include/meminfo/sysmeminfo.h
@@ -18,6 +18,7 @@
#include <sys/types.h>
+#include <functional>
#include <map>
#include <string>
#include <vector>
@@ -28,6 +29,21 @@
class SysMemInfo final {
// System or Global memory accounting
public:
+ static constexpr const char* kMemTotal = "MemTotal:";
+ static constexpr const char* kMemFree = "MemFree:";
+ static constexpr const char* kMemBuffers = "Buffers:";
+ static constexpr const char* kMemCached = "Cached:";
+ static constexpr const char* kMemShmem = "Shmem:";
+ static constexpr const char* kMemSlab = "Slab:";
+ static constexpr const char* kMemSReclaim = "SReclaimable:";
+ static constexpr const char* kMemSUnreclaim = "SUnreclaim:";
+ static constexpr const char* kMemSwapTotal = "SwapTotal:";
+ static constexpr const char* kMemSwapFree = "SwapFree:";
+ static constexpr const char* kMemMapped = "Mapped:";
+ static constexpr const char* kMemVmallocUsed = "VmallocUsed:";
+ static constexpr const char* kMemPageTables = "PageTables:";
+ static constexpr const char* kMemKernelStack = "KernelStack:";
+
static const std::vector<std::string> kDefaultSysMemInfoTags;
SysMemInfo() = default;
@@ -36,26 +52,32 @@
bool ReadMemInfo(const std::string& path = "/proc/meminfo");
bool ReadMemInfo(const std::vector<std::string>& tags,
const std::string& path = "/proc/meminfo");
+ bool ReadMemInfo(const std::vector<std::string>& tags, std::vector<uint64_t>* out,
+ const std::string& path = "/proc/meminfo");
+ bool ReadMemInfo(std::vector<uint64_t>* out, const std::string& path = "/proc/meminfo");
// getters
- uint64_t mem_total_kb() { return mem_in_kb_["MemTotal:"]; }
- uint64_t mem_free_kb() { return mem_in_kb_["MemFree:"]; }
- uint64_t mem_buffers_kb() { return mem_in_kb_["Buffers:"]; }
- uint64_t mem_cached_kb() { return mem_in_kb_["Cached:"]; }
- uint64_t mem_shmem_kb() { return mem_in_kb_["Shmem:"]; }
- uint64_t mem_slab_kb() { return mem_in_kb_["Slab:"]; }
- uint64_t mem_slab_reclailmable_kb() { return mem_in_kb_["SReclaimable:"]; }
- uint64_t mem_slab_unreclaimable_kb() { return mem_in_kb_["SUnreclaim:"]; }
- uint64_t mem_swap_kb() { return mem_in_kb_["SwapTotal:"]; }
- uint64_t mem_free_swap_kb() { return mem_in_kb_["SwapFree:"]; }
- uint64_t mem_zram_kb() { return mem_in_kb_["Zram:"]; }
- uint64_t mem_mapped_kb() { return mem_in_kb_["Mapped:"]; }
- uint64_t mem_vmalloc_used_kb() { return mem_in_kb_["VmallocUsed:"]; }
- uint64_t mem_page_tables_kb() { return mem_in_kb_["PageTables:"]; }
- uint64_t mem_kernel_stack_kb() { return mem_in_kb_["KernelStack:"]; }
+ uint64_t mem_total_kb() { return mem_in_kb_[kMemTotal]; }
+ uint64_t mem_free_kb() { return mem_in_kb_[kMemFree]; }
+ uint64_t mem_buffers_kb() { return mem_in_kb_[kMemBuffers]; }
+ uint64_t mem_cached_kb() { return mem_in_kb_[kMemCached]; }
+ uint64_t mem_shmem_kb() { return mem_in_kb_[kMemShmem]; }
+ uint64_t mem_slab_kb() { return mem_in_kb_[kMemSlab]; }
+ uint64_t mem_slab_reclaimable_kb() { return mem_in_kb_[kMemSReclaim]; }
+ uint64_t mem_slab_unreclaimable_kb() { return mem_in_kb_[kMemSUnreclaim]; }
+ uint64_t mem_swap_kb() { return mem_in_kb_[kMemSwapTotal]; }
+ uint64_t mem_swap_free_kb() { return mem_in_kb_[kMemSwapFree]; }
+ uint64_t mem_mapped_kb() { return mem_in_kb_[kMemMapped]; }
+ uint64_t mem_vmalloc_used_kb() { return mem_in_kb_[kMemVmallocUsed]; }
+ uint64_t mem_page_tables_kb() { return mem_in_kb_[kMemPageTables]; }
+ uint64_t mem_kernel_stack_kb() { return mem_in_kb_[kMemKernelStack]; }
+ uint64_t mem_zram_kb(const std::string& zram_dev = "");
private:
std::map<std::string, uint64_t> mem_in_kb_;
+ bool MemZramDevice(const std::string& zram_dev, uint64_t* mem_zram_dev);
+ bool ReadMemInfo(const std::vector<std::string>& tags, const std::string& path,
+ std::function<void(const std::string&, uint64_t)> store_val);
};
} // namespace meminfo
diff --git a/libmeminfo/libmeminfo_benchmark.cpp b/libmeminfo/libmeminfo_benchmark.cpp
index e2239f0..2660a4d 100644
--- a/libmeminfo/libmeminfo_benchmark.cpp
+++ b/libmeminfo/libmeminfo_benchmark.cpp
@@ -17,6 +17,8 @@
#include <meminfo/sysmeminfo.h>
#include <fcntl.h>
+#include <inttypes.h>
+#include <stdio.h>
#include <sys/stat.h>
#include <sys/types.h>
@@ -27,6 +29,8 @@
#include <benchmark/benchmark.h>
+using ::android::meminfo::SysMemInfo;
+
enum {
MEMINFO_TOTAL,
MEMINFO_FREE,
@@ -46,7 +50,7 @@
MEMINFO_COUNT
};
-void get_mem_info(uint64_t mem[], const char* file) {
+static void get_mem_info(uint64_t mem[], const char* file) {
char buffer[4096];
unsigned int numFound = 0;
@@ -67,8 +71,8 @@
buffer[len] = 0;
static const char* const tags[] = {
- "MemTotal:", "MemFree:", "Buffers:", "Cached:", "Shmem:", "Slab:",
- "SReclaimable:", "SUnreclaim:", "SwapTotal:", "SwapFree:", "ZRam:", "Mapped:",
+ "MemTotal:", "MemFree:", "Buffers:", "Cached:", "Shmem:", "Slab:",
+ "SReclaimable:", "SUnreclaim:", "SwapTotal:", "SwapFree:", "ZRam:", "Mapped:",
"VmallocUsed:", "PageTables:", "KernelStack:", NULL};
static const int tagsLen[] = {9, 8, 8, 7, 6, 5, 13, 11, 10, 9, 5, 7, 12, 11, 12, 0};
@@ -78,7 +82,8 @@
while (*p && (numFound < (sizeof(tagsLen) / sizeof(tagsLen[0])))) {
int i = 0;
while (tags[i]) {
- //std::cout << "tag =" << tags[i] << " p = " << std::string(p, tagsLen[i]) << std::endl;
+ // std::cout << "tag =" << tags[i] << " p = " << std::string(p, tagsLen[i]) <<
+ // std::endl;
if (strncmp(p, tags[i], tagsLen[i]) == 0) {
p += tagsLen[i];
while (*p == ' ') p++;
@@ -101,7 +106,7 @@
}
}
-static void BM_ParseSysMemInfo(benchmark::State& state) {
+static void BM_ReadMemInfo_old(benchmark::State& state) {
std::string meminfo = R"meminfo(MemTotal: 3019740 kB
MemFree: 1809728 kB
MemAvailable: 2546560 kB
@@ -155,9 +160,9 @@
get_mem_info(mem, tf.path);
}
}
-BENCHMARK(BM_ParseSysMemInfo);
+BENCHMARK(BM_ReadMemInfo_old);
-static void BM_ReadMemInfo(benchmark::State& state) {
+static void BM_ReadMemInfo_new(benchmark::State& state) {
std::string meminfo = R"meminfo(MemTotal: 3019740 kB
MemFree: 1809728 kB
MemAvailable: 2546560 kB
@@ -207,11 +212,189 @@
android::base::WriteStringToFd(meminfo, tf.fd);
std::string file = std::string(tf.path);
- ::android::meminfo::SysMemInfo mi;
+ std::vector<uint64_t> mem(MEMINFO_COUNT);
+ const std::vector<std::string> tags = {
+ SysMemInfo::kMemTotal, SysMemInfo::kMemFree, SysMemInfo::kMemBuffers,
+ SysMemInfo::kMemCached, SysMemInfo::kMemShmem, SysMemInfo::kMemSlab,
+ SysMemInfo::kMemSReclaim, SysMemInfo::kMemSUnreclaim, SysMemInfo::kMemSwapTotal,
+ SysMemInfo::kMemSwapFree, SysMemInfo::kMemMapped, SysMemInfo::kMemVmallocUsed,
+ SysMemInfo::kMemPageTables, SysMemInfo::kMemKernelStack,
+ };
+
+ SysMemInfo smi;
for (auto _ : state) {
- mi.ReadMemInfo(file);
+ smi.ReadMemInfo(tags, &mem, file);
}
}
-BENCHMARK(BM_ReadMemInfo);
+BENCHMARK(BM_ReadMemInfo_new);
+
+static uint64_t get_zram_mem_used(const std::string& zram_dir) {
+ FILE* f = fopen((zram_dir + "mm_stat").c_str(), "r");
+ if (f) {
+ uint64_t mem_used_total = 0;
+
+ int matched = fscanf(f, "%*d %*d %" SCNu64 " %*d %*d %*d %*d", &mem_used_total);
+ if (matched != 1)
+ fprintf(stderr, "warning: failed to parse %s\n", (zram_dir + "mm_stat").c_str());
+
+ fclose(f);
+ return mem_used_total;
+ }
+
+ f = fopen((zram_dir + "mem_used_total").c_str(), "r");
+ if (f) {
+ uint64_t mem_used_total = 0;
+
+ int matched = fscanf(f, "%" SCNu64, &mem_used_total);
+ if (matched != 1)
+ fprintf(stderr, "warning: failed to parse %s\n", (zram_dir + "mem_used_total").c_str());
+
+ fclose(f);
+ return mem_used_total;
+ }
+
+ return 0;
+}
+
+static void BM_ZramTotal_old(benchmark::State& state) {
+ std::string exec_dir = ::android::base::GetExecutableDirectory();
+ std::string zram_mmstat_dir = exec_dir + "/testdata1/";
+ for (auto _ : state) {
+ uint64_t zram_total __attribute__((unused)) = get_zram_mem_used(zram_mmstat_dir) / 1024;
+ }
+}
+BENCHMARK(BM_ZramTotal_old);
+
+static void BM_ZramTotal_new(benchmark::State& state) {
+ std::string exec_dir = ::android::base::GetExecutableDirectory();
+ std::string zram_mmstat_dir = exec_dir + "/testdata1/";
+ SysMemInfo smi;
+ for (auto _ : state) {
+ uint64_t zram_total __attribute__((unused)) = smi.mem_zram_kb(zram_mmstat_dir);
+ }
+}
+BENCHMARK(BM_ZramTotal_new);
+
+static void BM_MemInfoWithZram_old(benchmark::State& state) {
+ std::string meminfo = R"meminfo(MemTotal: 3019740 kB
+MemFree: 1809728 kB
+MemAvailable: 2546560 kB
+Buffers: 54736 kB
+Cached: 776052 kB
+SwapCached: 0 kB
+Active: 445856 kB
+Inactive: 459092 kB
+Active(anon): 78492 kB
+Inactive(anon): 2240 kB
+Active(file): 367364 kB
+Inactive(file): 456852 kB
+Unevictable: 3096 kB
+Mlocked: 3096 kB
+SwapTotal: 0 kB
+SwapFree: 0 kB
+Dirty: 32 kB
+Writeback: 0 kB
+AnonPages: 74988 kB
+Mapped: 62624 kB
+Shmem: 4020 kB
+Slab: 86464 kB
+SReclaimable: 44432 kB
+SUnreclaim: 42032 kB
+KernelStack: 4880 kB
+PageTables: 2900 kB
+NFS_Unstable: 0 kB
+Bounce: 0 kB
+WritebackTmp: 0 kB
+CommitLimit: 1509868 kB
+Committed_AS: 80296 kB
+VmallocTotal: 263061440 kB
+VmallocUsed: 0 kB
+VmallocChunk: 0 kB
+AnonHugePages: 6144 kB
+ShmemHugePages: 0 kB
+ShmemPmdMapped: 0 kB
+CmaTotal: 131072 kB
+CmaFree: 130380 kB
+HugePages_Total: 0
+HugePages_Free: 0
+HugePages_Rsvd: 0
+HugePages_Surp: 0
+Hugepagesize: 2048 kB)meminfo";
+
+ TemporaryFile tf;
+ ::android::base::WriteStringToFd(meminfo, tf.fd);
+ std::string exec_dir = ::android::base::GetExecutableDirectory();
+ std::string zram_mmstat_dir = exec_dir + "/testdata1/";
+ uint64_t mem[MEMINFO_COUNT];
+ for (auto _ : state) {
+ get_mem_info(mem, tf.path);
+ mem[MEMINFO_ZRAM_TOTAL] = get_zram_mem_used("/sys/block/zram0/") / 1024;
+ CHECK_EQ(mem[MEMINFO_KERNEL_STACK], 4880u);
+ }
+}
+BENCHMARK(BM_MemInfoWithZram_old);
+
+static void BM_MemInfoWithZram_new(benchmark::State& state) {
+ std::string meminfo = R"meminfo(MemTotal: 3019740 kB
+MemFree: 1809728 kB
+MemAvailable: 2546560 kB
+Buffers: 54736 kB
+Cached: 776052 kB
+SwapCached: 0 kB
+Active: 445856 kB
+Inactive: 459092 kB
+Active(anon): 78492 kB
+Inactive(anon): 2240 kB
+Active(file): 367364 kB
+Inactive(file): 456852 kB
+Unevictable: 3096 kB
+Mlocked: 3096 kB
+SwapTotal: 0 kB
+SwapFree: 0 kB
+Dirty: 32 kB
+Writeback: 0 kB
+AnonPages: 74988 kB
+Mapped: 62624 kB
+Shmem: 4020 kB
+Slab: 86464 kB
+SReclaimable: 44432 kB
+SUnreclaim: 42032 kB
+KernelStack: 4880 kB
+PageTables: 2900 kB
+NFS_Unstable: 0 kB
+Bounce: 0 kB
+WritebackTmp: 0 kB
+CommitLimit: 1509868 kB
+Committed_AS: 80296 kB
+VmallocTotal: 263061440 kB
+VmallocUsed: 0 kB
+VmallocChunk: 0 kB
+AnonHugePages: 6144 kB
+ShmemHugePages: 0 kB
+ShmemPmdMapped: 0 kB
+CmaTotal: 131072 kB
+CmaFree: 130380 kB
+HugePages_Total: 0
+HugePages_Free: 0
+HugePages_Rsvd: 0
+HugePages_Surp: 0
+Hugepagesize: 2048 kB)meminfo";
+
+ TemporaryFile tf;
+ android::base::WriteStringToFd(meminfo, tf.fd);
+
+ std::string file = std::string(tf.path);
+ std::vector<uint64_t> mem(MEMINFO_COUNT);
+ std::vector<std::string> tags(SysMemInfo::kDefaultSysMemInfoTags);
+ auto it = tags.begin();
+ tags.insert(it + MEMINFO_ZRAM_TOTAL, "Zram:");
+ SysMemInfo smi;
+
+ for (auto _ : state) {
+ smi.ReadMemInfo(tags, &mem, file);
+ CHECK_EQ(mem[MEMINFO_KERNEL_STACK], 4880u);
+ }
+}
+BENCHMARK(BM_MemInfoWithZram_new);
BENCHMARK_MAIN();
diff --git a/libmeminfo/libmeminfo_test.cpp b/libmeminfo/libmeminfo_test.cpp
index 7a2be41..2856c2d 100644
--- a/libmeminfo/libmeminfo_test.cpp
+++ b/libmeminfo/libmeminfo_test.cpp
@@ -73,7 +73,7 @@
}
}
-TEST_F(ValidateProcMemInfo, TestMapsUsage) {
+TEST_F(ValidateProcMemInfo, TestMaps) {
const std::vector<Vma>& maps = proc_mem->Maps();
ASSERT_FALSE(maps.empty());
ASSERT_EQ(proc->num_maps, maps.size());
@@ -96,6 +96,30 @@
EXPECT_EQ(proc_usage.uss, proc_mem->Usage().uss);
}
+TEST_F(ValidateProcMemInfo, TestSwapUsage) {
+ const std::vector<Vma>& maps = proc_mem->Maps();
+ ASSERT_FALSE(maps.empty());
+ ASSERT_EQ(proc->num_maps, maps.size());
+
+ pm_memusage_t map_usage, proc_usage;
+ pm_memusage_zero(&map_usage);
+ pm_memusage_zero(&proc_usage);
+ for (size_t i = 0; i < maps.size(); i++) {
+ ASSERT_EQ(0, pm_map_usage(proc->maps[i], &map_usage));
+ EXPECT_EQ(map_usage.swap, maps[i].usage.swap) << "SWAP mismatch for map: " << maps[i].name;
+ pm_memusage_add(&proc_usage, &map_usage);
+ }
+
+ EXPECT_EQ(proc_usage.swap, proc_mem->Usage().swap);
+}
+
+TEST_F(ValidateProcMemInfo, TestSwapOffsets) {
+ const MemUsage& proc_usage = proc_mem->Usage();
+ const std::vector<uint16_t>& swap_offsets = proc_mem->SwapOffsets();
+
+ EXPECT_EQ(proc_usage.swap / getpagesize(), swap_offsets.size());
+}
+
class ValidateProcMemInfoWss : public ::testing::Test {
protected:
void SetUp() override {
@@ -118,7 +142,7 @@
TEST_F(ValidateProcMemInfoWss, TestWorkingTestReset) {
// Expect reset to succeed
- EXPECT_TRUE(proc_mem->WssReset());
+ EXPECT_TRUE(ProcMemInfo::ResetWorkingSet(pid));
}
TEST_F(ValidateProcMemInfoWss, TestWssEquality) {
@@ -221,6 +245,93 @@
}
}
+TEST(TestProcMemInfo, TestMapsEmpty) {
+ ProcMemInfo proc_mem(pid);
+ const std::vector<Vma>& maps = proc_mem.Maps();
+ EXPECT_GT(maps.size(), 0);
+}
+
+TEST(TestProcMemInfo, TestUsageEmpty) {
+ // If we created the object for getting working set,
+ // the usage must be empty
+ ProcMemInfo proc_mem(pid, true);
+ const MemUsage& usage = proc_mem.Usage();
+ EXPECT_EQ(usage.rss, 0);
+ EXPECT_EQ(usage.vss, 0);
+ EXPECT_EQ(usage.pss, 0);
+ EXPECT_EQ(usage.uss, 0);
+ EXPECT_EQ(usage.swap, 0);
+}
+
+TEST(TestProcMemInfoWssReset, TestWssEmpty) {
+ // If we created the object for getting usage,
+ // the working set must be empty
+ ProcMemInfo proc_mem(pid, false);
+ const MemUsage& wss = proc_mem.Wss();
+ EXPECT_EQ(wss.rss, 0);
+ EXPECT_EQ(wss.vss, 0);
+ EXPECT_EQ(wss.pss, 0);
+ EXPECT_EQ(wss.uss, 0);
+ EXPECT_EQ(wss.swap, 0);
+}
+
+TEST(TestProcMemInfoWssReset, TestSwapOffsetsEmpty) {
+ // If we created the object for getting working set,
+ // the swap offsets must be empty
+ ProcMemInfo proc_mem(pid, true);
+ const std::vector<uint16_t>& swap_offsets = proc_mem.SwapOffsets();
+ EXPECT_EQ(swap_offsets.size(), 0);
+}
+
+TEST(ValidateProcMemInfoFlags, TestPageFlags1) {
+ // Create proc object using libpagemap
+ pm_kernel_t* ker;
+ ASSERT_EQ(0, pm_kernel_create(&ker));
+ pm_process_t* proc;
+ ASSERT_EQ(0, pm_process_create(ker, pid, &proc));
+
+ // count swapbacked pages using libpagemap
+ pm_memusage_t proc_usage;
+ pm_memusage_zero(&proc_usage);
+ ASSERT_EQ(0, pm_process_usage_flags(proc, &proc_usage, (1 << KPF_SWAPBACKED),
+ (1 << KPF_SWAPBACKED)));
+
+ // Create ProcMemInfo that counts swapbacked pages
+ ProcMemInfo proc_mem(pid, false, (1 << KPF_SWAPBACKED), (1 << KPF_SWAPBACKED));
+
+ EXPECT_EQ(proc_usage.vss, proc_mem.Usage().vss);
+ EXPECT_EQ(proc_usage.rss, proc_mem.Usage().rss);
+ EXPECT_EQ(proc_usage.pss, proc_mem.Usage().pss);
+ EXPECT_EQ(proc_usage.uss, proc_mem.Usage().uss);
+
+ pm_process_destroy(proc);
+ pm_kernel_destroy(ker);
+}
+
+TEST(ValidateProcMemInfoFlags, TestPageFlags2) {
+ // Create proc object using libpagemap
+ pm_kernel_t* ker;
+ ASSERT_EQ(0, pm_kernel_create(&ker));
+ pm_process_t* proc;
+ ASSERT_EQ(0, pm_process_create(ker, pid, &proc));
+
+ // count non-swapbacked pages using libpagemap
+ pm_memusage_t proc_usage;
+ pm_memusage_zero(&proc_usage);
+ ASSERT_EQ(0, pm_process_usage_flags(proc, &proc_usage, (1 << KPF_SWAPBACKED), 0));
+
+ // Create ProcMemInfo that counts non-swapbacked pages
+ ProcMemInfo proc_mem(pid, false, 0, (1 << KPF_SWAPBACKED));
+
+ EXPECT_EQ(proc_usage.vss, proc_mem.Usage().vss);
+ EXPECT_EQ(proc_usage.rss, proc_mem.Usage().rss);
+ EXPECT_EQ(proc_usage.pss, proc_mem.Usage().pss);
+ EXPECT_EQ(proc_usage.uss, proc_mem.Usage().uss);
+
+ pm_process_destroy(proc);
+ pm_kernel_destroy(ker);
+}
+
TEST(SysMemInfoParser, TestSysMemInfoFile) {
std::string meminfo = R"meminfo(MemTotal: 3019740 kB
MemFree: 1809728 kB
@@ -236,8 +347,8 @@
Inactive(file): 456852 kB
Unevictable: 3096 kB
Mlocked: 3096 kB
-SwapTotal: 0 kB
-SwapFree: 0 kB
+SwapTotal: 32768 kB
+SwapFree: 4096 kB
Dirty: 32 kB
Writeback: 0 kB
AnonPages: 74988 kB
@@ -254,7 +365,7 @@
CommitLimit: 1509868 kB
Committed_AS: 80296 kB
VmallocTotal: 263061440 kB
-VmallocUsed: 0 kB
+VmallocUsed: 65536 kB
VmallocChunk: 0 kB
AnonHugePages: 6144 kB
ShmemHugePages: 0 kB
@@ -274,7 +385,19 @@
SysMemInfo mi;
ASSERT_TRUE(mi.ReadMemInfo(tf.path));
EXPECT_EQ(mi.mem_total_kb(), 3019740);
+ EXPECT_EQ(mi.mem_free_kb(), 1809728);
+ EXPECT_EQ(mi.mem_buffers_kb(), 54736);
+ EXPECT_EQ(mi.mem_cached_kb(), 776052);
+ EXPECT_EQ(mi.mem_shmem_kb(), 4020);
+ EXPECT_EQ(mi.mem_slab_kb(), 86464);
+ EXPECT_EQ(mi.mem_slab_reclaimable_kb(), 44432);
+ EXPECT_EQ(mi.mem_slab_unreclaimable_kb(), 42032);
+ EXPECT_EQ(mi.mem_swap_kb(), 32768);
+ EXPECT_EQ(mi.mem_swap_free_kb(), 4096);
+ EXPECT_EQ(mi.mem_mapped_kb(), 62624);
+ EXPECT_EQ(mi.mem_vmalloc_used_kb(), 65536);
EXPECT_EQ(mi.mem_page_tables_kb(), 2900);
+ EXPECT_EQ(mi.mem_kernel_stack_kb(), 4880);
}
TEST(SysMemInfoParser, TestEmptyFile) {
@@ -288,6 +411,111 @@
EXPECT_EQ(mi.mem_total_kb(), 0);
}
+TEST(SysMemInfoParser, TestZramTotal) {
+ std::string exec_dir = ::android::base::GetExecutableDirectory();
+
+ SysMemInfo mi;
+ std::string zram_mmstat_dir = exec_dir + "/testdata1/";
+ EXPECT_EQ(mi.mem_zram_kb(zram_mmstat_dir), 30504);
+
+ std::string zram_memused_dir = exec_dir + "/testdata2/";
+ EXPECT_EQ(mi.mem_zram_kb(zram_memused_dir), 30504);
+}
+
+enum {
+ MEMINFO_TOTAL,
+ MEMINFO_FREE,
+ MEMINFO_BUFFERS,
+ MEMINFO_CACHED,
+ MEMINFO_SHMEM,
+ MEMINFO_SLAB,
+ MEMINFO_SLAB_RECLAIMABLE,
+ MEMINFO_SLAB_UNRECLAIMABLE,
+ MEMINFO_SWAP_TOTAL,
+ MEMINFO_SWAP_FREE,
+ MEMINFO_ZRAM_TOTAL,
+ MEMINFO_MAPPED,
+ MEMINFO_VMALLOC_USED,
+ MEMINFO_PAGE_TABLES,
+ MEMINFO_KERNEL_STACK,
+ MEMINFO_COUNT
+};
+
+TEST(SysMemInfoParser, TestZramWithTags) {
+ std::string meminfo = R"meminfo(MemTotal: 3019740 kB
+MemFree: 1809728 kB
+MemAvailable: 2546560 kB
+Buffers: 54736 kB
+Cached: 776052 kB
+SwapCached: 0 kB
+Active: 445856 kB
+Inactive: 459092 kB
+Active(anon): 78492 kB
+Inactive(anon): 2240 kB
+Active(file): 367364 kB
+Inactive(file): 456852 kB
+Unevictable: 3096 kB
+Mlocked: 3096 kB
+SwapTotal: 32768 kB
+SwapFree: 4096 kB
+Dirty: 32 kB
+Writeback: 0 kB
+AnonPages: 74988 kB
+Mapped: 62624 kB
+Shmem: 4020 kB
+Slab: 86464 kB
+SReclaimable: 44432 kB
+SUnreclaim: 42032 kB
+KernelStack: 4880 kB
+PageTables: 2900 kB
+NFS_Unstable: 0 kB
+Bounce: 0 kB
+WritebackTmp: 0 kB
+CommitLimit: 1509868 kB
+Committed_AS: 80296 kB
+VmallocTotal: 263061440 kB
+VmallocUsed: 65536 kB
+VmallocChunk: 0 kB
+AnonHugePages: 6144 kB
+ShmemHugePages: 0 kB
+ShmemPmdMapped: 0 kB
+CmaTotal: 131072 kB
+CmaFree: 130380 kB
+HugePages_Total: 0
+HugePages_Free: 0
+HugePages_Rsvd: 0
+HugePages_Surp: 0
+Hugepagesize: 2048 kB)meminfo";
+
+ TemporaryFile tf;
+ ASSERT_TRUE(tf.fd != -1);
+ ASSERT_TRUE(::android::base::WriteStringToFd(meminfo, tf.fd));
+ std::string file = std::string(tf.path);
+ std::vector<uint64_t> mem(MEMINFO_COUNT);
+ std::vector<std::string> tags(SysMemInfo::kDefaultSysMemInfoTags);
+ auto it = tags.begin();
+ tags.insert(it + MEMINFO_ZRAM_TOTAL, "Zram:");
+ SysMemInfo mi;
+
+ // Read system memory info
+ EXPECT_TRUE(mi.ReadMemInfo(tags, &mem, file));
+
+ EXPECT_EQ(mem[MEMINFO_TOTAL], 3019740);
+ EXPECT_EQ(mem[MEMINFO_FREE], 1809728);
+ EXPECT_EQ(mem[MEMINFO_BUFFERS], 54736);
+ EXPECT_EQ(mem[MEMINFO_CACHED], 776052);
+ EXPECT_EQ(mem[MEMINFO_SHMEM], 4020);
+ EXPECT_EQ(mem[MEMINFO_SLAB], 86464);
+ EXPECT_EQ(mem[MEMINFO_SLAB_RECLAIMABLE], 44432);
+ EXPECT_EQ(mem[MEMINFO_SLAB_UNRECLAIMABLE], 42032);
+ EXPECT_EQ(mem[MEMINFO_SWAP_TOTAL], 32768);
+ EXPECT_EQ(mem[MEMINFO_SWAP_FREE], 4096);
+ EXPECT_EQ(mem[MEMINFO_MAPPED], 62624);
+ EXPECT_EQ(mem[MEMINFO_VMALLOC_USED], 65536);
+ EXPECT_EQ(mem[MEMINFO_PAGE_TABLES], 2900);
+ EXPECT_EQ(mem[MEMINFO_KERNEL_STACK], 4880);
+}
+
int main(int argc, char** argv) {
::testing::InitGoogleTest(&argc, argv);
if (argc <= 1) {
diff --git a/libmeminfo/procmeminfo.cpp b/libmeminfo/procmeminfo.cpp
index fe91d25..8867e14 100644
--- a/libmeminfo/procmeminfo.cpp
+++ b/libmeminfo/procmeminfo.cpp
@@ -44,6 +44,8 @@
to->pss += from.pss;
to->uss += from.uss;
+ to->swap += from.swap;
+
to->private_clean += from.private_clean;
to->private_dirty += from.private_dirty;
@@ -51,48 +53,78 @@
to->shared_dirty += from.shared_dirty;
}
-ProcMemInfo::ProcMemInfo(pid_t pid, bool get_wss) : pid_(pid), get_wss_(get_wss) {
- if (!ReadMaps(get_wss_)) {
- LOG(ERROR) << "Failed to read maps for Process " << pid_;
- }
-}
-
-const std::vector<Vma>& ProcMemInfo::Maps() {
- return maps_;
-}
-
-const MemUsage& ProcMemInfo::Usage() {
- if (get_wss_) {
- LOG(WARNING) << "Trying to read memory usage from working set object";
- }
- return usage_;
-}
-
-const MemUsage& ProcMemInfo::Wss() {
- if (!get_wss_) {
- LOG(WARNING) << "Trying to read working set when there is none";
- }
-
- return wss_;
-}
-
-bool ProcMemInfo::WssReset() {
- if (!get_wss_) {
- LOG(ERROR) << "Trying to reset working set from a memory usage counting object";
- return false;
- }
-
- std::string clear_refs_path = ::android::base::StringPrintf("/proc/%d/clear_refs", pid_);
+bool ProcMemInfo::ResetWorkingSet(pid_t pid) {
+ std::string clear_refs_path = ::android::base::StringPrintf("/proc/%d/clear_refs", pid);
if (!::android::base::WriteStringToFile("1\n", clear_refs_path)) {
PLOG(ERROR) << "Failed to write to " << clear_refs_path;
return false;
}
- wss_.clear();
return true;
}
+ProcMemInfo::ProcMemInfo(pid_t pid, bool get_wss, uint64_t pgflags, uint64_t pgflags_mask)
+ : pid_(pid), get_wss_(get_wss), pgflags_(pgflags), pgflags_mask_(pgflags_mask) {}
+
+const std::vector<Vma>& ProcMemInfo::Maps() {
+ if (maps_.empty() && !ReadMaps(get_wss_)) {
+ LOG(ERROR) << "Failed to read maps for Process " << pid_;
+ }
+
+ return maps_;
+}
+
+const MemUsage& ProcMemInfo::Usage() {
+ if (get_wss_) {
+ LOG(WARNING) << "Trying to read process memory usage for " << pid_
+ << " using invalid object";
+ return usage_;
+ }
+
+ if (maps_.empty() && !ReadMaps(get_wss_)) {
+ LOG(ERROR) << "Failed to get memory usage for Process " << pid_;
+ }
+
+ return usage_;
+}
+
+const MemUsage& ProcMemInfo::Wss() {
+ if (!get_wss_) {
+ LOG(WARNING) << "Trying to read process working set for " << pid_
+ << " using invalid object";
+ return wss_;
+ }
+
+ if (maps_.empty() && !ReadMaps(get_wss_)) {
+ LOG(ERROR) << "Failed to get working set for Process " << pid_;
+ }
+
+ return wss_;
+}
+
+const std::vector<uint16_t>& ProcMemInfo::SwapOffsets() {
+ if (get_wss_) {
+ LOG(WARNING) << "Trying to read process swap offsets for " << pid_
+ << " using invalid object";
+ return swap_offsets_;
+ }
+
+ if (maps_.empty() && !ReadMaps(get_wss_)) {
+ LOG(ERROR) << "Failed to get swap offsets for Process " << pid_;
+ }
+
+ return swap_offsets_;
+}
+
bool ProcMemInfo::ReadMaps(bool get_wss) {
+ // Each object reads /proc/<pid>/maps only once. This is done to make sure programs that are
+ // running for the lifetime of the system can recycle the objects and don't have to
+ // unnecessarily retain and update this object in memory (which can get significantly large).
+ // E.g. A program that only needs to reset the working set will never all ->Maps(), ->Usage().
+ // E.g. A program that is monitoring smaps_rollup, may never call ->maps(), Usage(), so it
+ // doesn't make sense for us to parse and retain unnecessary memory accounting stats by default.
+ if (!maps_.empty()) return true;
+
// parse and read /proc/<pid>/maps
std::string maps_file = ::android::base::StringPrintf("/proc/%d/maps", pid_);
if (!::android::procinfo::ReadMapFile(
@@ -115,8 +147,8 @@
for (auto& vma : maps_) {
if (!ReadVmaStats(pagemap_fd.get(), vma, get_wss)) {
- LOG(ERROR) << "Failed to read page map for vma " << vma.name << "[" << vma.start
- << "-" << vma.end << "]";
+ LOG(ERROR) << "Failed to read page map for vma " << vma.name << "[" << vma.start << "-"
+ << vma.end << "]";
maps_.clear();
return false;
}
@@ -153,18 +185,24 @@
if (!PAGE_PRESENT(p) && !PAGE_SWAPPED(p)) continue;
if (PAGE_SWAPPED(p)) {
- // TODO: do what's needed for swapped pages
+ vma.usage.swap += pagesz;
+ swap_offsets_.emplace_back(PAGE_SWAP_OFFSET(p));
continue;
}
uint64_t page_frame = PAGE_PFN(p);
if (!pinfo.PageFlags(page_frame, &pg_flags[i])) {
LOG(ERROR) << "Failed to get page flags for " << page_frame << " in process " << pid_;
+ swap_offsets_.clear();
return false;
}
+ // skip unwanted pages from the count
+ if ((pg_flags[i] & pgflags_mask_) != pgflags_) continue;
+
if (!pinfo.PageMapCount(page_frame, &pg_counts[i])) {
LOG(ERROR) << "Failed to get page count for " << page_frame << " in process " << pid_;
+ swap_offsets_.clear();
return false;
}
diff --git a/libmeminfo/sysmeminfo.cpp b/libmeminfo/sysmeminfo.cpp
index 50fa213..4ec1c99 100644
--- a/libmeminfo/sysmeminfo.cpp
+++ b/libmeminfo/sysmeminfo.cpp
@@ -17,11 +17,16 @@
#include <ctype.h>
#include <errno.h>
#include <fcntl.h>
+#include <inttypes.h>
+#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
+#include <algorithm>
#include <cctype>
+#include <cstdio>
#include <fstream>
+#include <iterator>
#include <string>
#include <utility>
#include <vector>
@@ -29,7 +34,9 @@
#include <android-base/file.h>
#include <android-base/logging.h>
#include <android-base/parseint.h>
+#include <android-base/stringprintf.h>
#include <android-base/strings.h>
+#include <android-base/unique_fd.h>
#include "meminfo_private.h"
@@ -37,13 +44,37 @@
namespace meminfo {
const std::vector<std::string> SysMemInfo::kDefaultSysMemInfoTags = {
- "MemTotal:", "MemFree:", "Buffers:", "Cached:", "Shmem:",
- "Slab:", "SReclaimable:", "SUnreclaim:", "SwapTotal:", "SwapFree:",
- "ZRam:", "Mapped:", "VmallocUsed:", "PageTables:", "KernelStack:",
+ SysMemInfo::kMemTotal, SysMemInfo::kMemFree, SysMemInfo::kMemBuffers,
+ SysMemInfo::kMemCached, SysMemInfo::kMemShmem, SysMemInfo::kMemSlab,
+ SysMemInfo::kMemSReclaim, SysMemInfo::kMemSUnreclaim, SysMemInfo::kMemSwapTotal,
+ SysMemInfo::kMemSwapFree, SysMemInfo::kMemMapped, SysMemInfo::kMemVmallocUsed,
+ SysMemInfo::kMemPageTables, SysMemInfo::kMemKernelStack,
};
bool SysMemInfo::ReadMemInfo(const std::string& path) {
- return ReadMemInfo(SysMemInfo::kDefaultSysMemInfoTags, path);
+ return ReadMemInfo(SysMemInfo::kDefaultSysMemInfoTags, path,
+ [&](const std::string& tag, uint64_t val) { mem_in_kb_[tag] = val; });
+}
+
+bool SysMemInfo::ReadMemInfo(std::vector<uint64_t>* out, const std::string& path) {
+ return ReadMemInfo(SysMemInfo::kDefaultSysMemInfoTags, out, path);
+}
+
+bool SysMemInfo::ReadMemInfo(const std::vector<std::string>& tags, std::vector<uint64_t>* out,
+ const std::string& path) {
+ out->clear();
+ out->resize(tags.size());
+
+ return ReadMemInfo(tags, path, [&]([[maybe_unused]] const std::string& tag, uint64_t val) {
+ auto it = std::find(tags.begin(), tags.end(), tag);
+ if (it == tags.end()) {
+ LOG(ERROR) << "Tried to store invalid tag: " << tag;
+ return;
+ }
+ auto index = std::distance(tags.begin(), it);
+ // store the values in the same order as the tags
+ out->at(index) = val;
+ });
}
// TODO: Delete this function if it can't match up with the c-like implementation below.
@@ -82,7 +113,8 @@
}
#else
-bool SysMemInfo::ReadMemInfo(const std::vector<std::string>& tags, const std::string& path) {
+bool SysMemInfo::ReadMemInfo(const std::vector<std::string>& tags, const std::string& path,
+ std::function<void(const std::string&, uint64_t)> store_val) {
char buffer[4096];
int fd = open(path.c_str(), O_RDONLY | O_CLOEXEC);
if (fd < 0) {
@@ -99,31 +131,103 @@
buffer[len] = '\0';
char* p = buffer;
uint32_t found = 0;
+ uint32_t lineno = 0;
+ bool zram_tag_found = false;
while (*p && found < tags.size()) {
for (auto& tag : tags) {
+ // Special case for "Zram:" tag that android_os_Debug and friends look
+ // up along with the rest of the numbers from /proc/meminfo
+ if (!zram_tag_found && tag == "Zram:") {
+ store_val(tag, mem_zram_kb());
+ zram_tag_found = true;
+ found++;
+ continue;
+ }
+
if (strncmp(p, tag.c_str(), tag.size()) == 0) {
p += tag.size();
while (*p == ' ') p++;
char* endptr = nullptr;
- mem_in_kb_[tag] = strtoull(p, &endptr, 10);
+ uint64_t val = strtoull(p, &endptr, 10);
if (p == endptr) {
- PLOG(ERROR) << "Failed to parse line in file: " << path;
+ PLOG(ERROR) << "Failed to parse line:" << lineno + 1 << " in file: " << path;
return false;
}
+ store_val(tag, val);
p = endptr;
found++;
break;
}
}
+
while (*p && *p != '\n') {
p++;
}
if (*p) p++;
+ lineno++;
}
return true;
}
#endif
+uint64_t SysMemInfo::mem_zram_kb(const std::string& zram_dev) {
+ uint64_t mem_zram_total = 0;
+ if (!zram_dev.empty()) {
+ if (!MemZramDevice(zram_dev, &mem_zram_total)) {
+ return 0;
+ }
+ return mem_zram_total / 1024;
+ }
+
+ constexpr uint32_t kMaxZramDevices = 256;
+ for (uint32_t i = 0; i < kMaxZramDevices; i++) {
+ std::string zram_dev = ::android::base::StringPrintf("/sys/block/zram%u/", i);
+ if (access(zram_dev.c_str(), F_OK)) {
+ // We assume zram devices appear in range 0-255 and appear always in sequence
+ // under /sys/block. So, stop looking for them once we find one is missing.
+ break;
+ }
+
+ uint64_t mem_zram_dev;
+ if (!MemZramDevice(zram_dev, &mem_zram_dev)) {
+ return 0;
+ }
+
+ mem_zram_total += mem_zram_dev;
+ }
+
+ return mem_zram_total / 1024;
+}
+
+bool SysMemInfo::MemZramDevice(const std::string& zram_dev, uint64_t* mem_zram_dev) {
+ std::string mmstat = ::android::base::StringPrintf("%s/%s", zram_dev.c_str(), "mm_stat");
+ auto mmstat_fp = std::unique_ptr<FILE, decltype(&fclose)>{fopen(mmstat.c_str(), "re"), fclose};
+ if (mmstat_fp != nullptr) {
+ // only if we do have mmstat, use it. Otherwise, fall through to trying out the old
+ // 'mem_used_total'
+ if (fscanf(mmstat_fp.get(), "%*" SCNu64 " %*" SCNu64 " %" SCNu64, mem_zram_dev) != 1) {
+ PLOG(ERROR) << "Malformed mm_stat file in: " << zram_dev;
+ return false;
+ }
+ return true;
+ }
+
+ std::string content;
+ if (::android::base::ReadFileToString(zram_dev + "mem_used_total", &content)) {
+ *mem_zram_dev = strtoull(content.c_str(), NULL, 10);
+ if (*mem_zram_dev == ULLONG_MAX) {
+ PLOG(ERROR) << "Malformed mem_used_total file for zram dev: " << zram_dev
+ << " content: " << content;
+ return false;
+ }
+
+ return true;
+ }
+
+ LOG(ERROR) << "Can't find memory status under: " << zram_dev;
+ return false;
+}
+
} // namespace meminfo
} // namespace android
diff --git a/libmeminfo/testdata1/mm_stat b/libmeminfo/testdata1/mm_stat
new file mode 100644
index 0000000..32b325f
--- /dev/null
+++ b/libmeminfo/testdata1/mm_stat
@@ -0,0 +1 @@
+ 145674240 26801454 31236096 0 45772800 3042 1887 517
diff --git a/libmeminfo/testdata2/mem_used_total b/libmeminfo/testdata2/mem_used_total
new file mode 100644
index 0000000..97fcf41
--- /dev/null
+++ b/libmeminfo/testdata2/mem_used_total
@@ -0,0 +1 @@
+31236096
diff --git a/libmeminfo/tools/Android.bp b/libmeminfo/tools/Android.bp
index 0870130..715d63d 100644
--- a/libmeminfo/tools/Android.bp
+++ b/libmeminfo/tools/Android.bp
@@ -22,6 +22,22 @@
srcs: ["procmem.cpp"],
shared_libs: [
+ "libbase",
+ "libmeminfo",
+ ],
+}
+
+cc_binary {
+ name: "procrank2",
+ cflags: [
+ "-Wall",
+ "-Werror",
+ "-Wno-unused-parameter",
+ ],
+
+ srcs: ["procrank.cpp"],
+ shared_libs: [
+ "libbase",
"libmeminfo",
],
}
diff --git a/libmeminfo/tools/procmem.cpp b/libmeminfo/tools/procmem.cpp
index 3571e41..56de12d 100644
--- a/libmeminfo/tools/procmem.cpp
+++ b/libmeminfo/tools/procmem.cpp
@@ -15,20 +15,33 @@
*/
#include <errno.h>
+#include <inttypes.h>
#include <stdlib.h>
#include <unistd.h>
-#include <iomanip>
#include <iostream>
#include <sstream>
#include <string>
#include <vector>
+#include <android-base/stringprintf.h>
#include <meminfo/procmeminfo.h>
+using Vma = ::android::meminfo::Vma;
using ProcMemInfo = ::android::meminfo::ProcMemInfo;
using MemUsage = ::android::meminfo::MemUsage;
+// Global flags to control procmem output
+
+// Set to use page idle bits for working set detection
+bool use_pageidle = false;
+// hides map entries with zero rss
+bool hide_zeroes = false;
+// Reset working set and exit
+bool reset_wss = false;
+// Show working set, mutually exclusive with reset_wss;
+bool show_wss = false;
+
static void usage(const char* cmd) {
fprintf(stderr,
"Usage: %s [-i] [ -w | -W ] [ -p | -m ] [ -h ] pid\n"
@@ -42,68 +55,56 @@
cmd);
}
-static void show_footer(uint32_t nelem, const std::string& padding) {
- std::string elem(7, '-');
-
- for (uint32_t i = 0; i < nelem; ++i) {
- std::cout << std::setw(7) << elem << padding;
+static void print_separator(std::stringstream& ss) {
+ if (show_wss) {
+ ss << ::android::base::StringPrintf("%7s %7s %7s %7s %7s %7s %7s %s\n", "-------",
+ "-------", "-------", "-------", "-------", "-------",
+ "-------", "");
+ return;
}
- std::cout << std::endl;
+ ss << ::android::base::StringPrintf("%7s %7s %7s %7s %7s %7s %7s %7s %s\n", "-------",
+ "-------", "-------", "-------", "-------", "-------",
+ "-------", "-------", "");
}
-static void show_header(const std::vector<std::string>& header, const std::string& padding) {
- if (header.empty()) return;
-
- for (size_t i = 0; i < header.size() - 1; ++i) {
- std::cout << std::setw(7) << header[i] << padding;
+static void print_header(std::stringstream& ss) {
+ if (show_wss) {
+ ss << ::android::base::StringPrintf("%7s %7s %7s %7s %7s %7s %7s %s\n", "WRss",
+ "WPss", "WUss", "WShCl", "WShDi", "WPrCl", "WPrDi",
+ "Name");
+ } else {
+ ss << ::android::base::StringPrintf("%7s %7s %7s %7s %7s %7s %7s %7s %s\n", "Vss",
+ "Rss", "Pss", "Uss", "ShCl", "ShDi", "PrCl", "PrDi",
+ "Name");
}
- std::cout << header.back() << std::endl;
- show_footer(header.size() - 1, padding);
+ print_separator(ss);
}
-static void scan_usage(std::stringstream& ss, const MemUsage& usage, const std::string& padding,
- bool show_wss) {
- // clear string stream first.
- ss.str("");
- // TODO: use ::android::base::StringPrintf instead of <iomanip> here.
- if (!show_wss)
- ss << std::setw(6) << usage.vss/1024 << padding;
- ss << std::setw(6) << usage.rss/1024 << padding << std::setw(6)
- << usage.pss/1024 << padding << std::setw(6) << usage.uss/1024 << padding
- << std::setw(6) << usage.shared_clean/1024 << padding << std::setw(6)
- << usage.shared_dirty/1024 << padding << std::setw(6)
- << usage.private_clean/1024 << padding << std::setw(6)
- << usage.private_dirty/1024 << padding;
+static void print_stats(std::stringstream& ss, const MemUsage& stats) {
+ if (!show_wss) {
+ ss << ::android::base::StringPrintf("%6" PRIu64 "K ", stats.vss / 1024);
+ }
+
+ ss << ::android::base::StringPrintf("%6" PRIu64 "K %6" PRIu64 "K %6" PRIu64 "K %6" PRIu64
+ "K %6" PRIu64 "K %6" PRIu64 "K %6" PRIu64 "K ",
+ stats.rss / 1024, stats.pss / 1024, stats.uss / 1024,
+ stats.shared_clean / 1024, stats.shared_dirty / 1024,
+ stats.private_clean / 1024, stats.private_dirty / 1024);
}
-static int show(ProcMemInfo& proc, bool hide_zeroes, bool show_wss) {
- const std::vector<std::string> main_header = {"Vss", "Rss", "Pss", "Uss", "ShCl",
- "ShDi", "PrCl", "PrDi", "Name"};
- const std::vector<std::string> wss_header = {"WRss", "WPss", "WUss", "WShCl",
- "WShDi", "WPrCl", "WPrDi", "Name"};
- const std::vector<std::string>& header = show_wss ? wss_header : main_header;
-
- // Read process memory stats
- const MemUsage& stats = show_wss ? proc.Wss() : proc.Usage();
- const std::vector<::android::meminfo::Vma>& maps = proc.Maps();
-
- // following retains 'procmem' output so as to not break any scripts
- // that rely on it.
- std::string spaces = " ";
- show_header(header, spaces);
- const std::string padding = "K ";
+static int show(const MemUsage& proc_stats, const std::vector<Vma>& maps) {
std::stringstream ss;
+ print_header(ss);
for (auto& vma : maps) {
const MemUsage& vma_stats = show_wss ? vma.wss : vma.usage;
if (hide_zeroes && vma_stats.rss == 0) {
continue;
}
- scan_usage(ss, vma_stats, padding, show_wss);
+ print_stats(ss, vma_stats);
ss << vma.name << std::endl;
- std::cout << ss.str();
}
- show_footer(header.size() - 1, spaces);
- scan_usage(ss, stats, padding, show_wss);
+ print_separator(ss);
+ print_stats(ss, proc_stats);
ss << "TOTAL" << std::endl;
std::cout << ss.str();
@@ -111,28 +112,43 @@
}
int main(int argc, char* argv[]) {
- bool use_pageidle = false;
- bool hide_zeroes = false;
- bool wss_reset = false;
- bool show_wss = false;
int opt;
+ auto pss_sort = [](const Vma& a, const Vma& b) {
+ uint64_t pss_a = show_wss ? a.wss.pss : a.usage.pss;
+ uint64_t pss_b = show_wss ? b.wss.pss : b.usage.pss;
+ return pss_a > pss_b;
+ };
+ auto uss_sort = [](const Vma& a, const Vma& b) {
+ uint64_t uss_a = show_wss ? a.wss.uss : a.usage.uss;
+ uint64_t uss_b = show_wss ? b.wss.uss : b.usage.uss;
+ return uss_a > uss_b;
+ };
+
+ std::function<bool(const Vma& a, const Vma& b)> sort_func = nullptr;
while ((opt = getopt(argc, argv, "himpuWw")) != -1) {
switch (opt) {
case 'h':
hide_zeroes = true;
break;
case 'i':
+ // TODO: libmeminfo doesn't support the flag to chose
+ // between idle page tracking vs clear_refs. So for now,
+ // this flag is unused and the library defaults to using
+ // /proc/<pid>/clear_refs for finding the working set.
use_pageidle = true;
break;
case 'm':
+ // this is the default
break;
case 'p':
+ sort_func = pss_sort;
break;
case 'u':
+ sort_func = uss_sort;
break;
case 'W':
- wss_reset = true;
+ reset_wss = true;
break;
case 'w':
show_wss = true;
@@ -157,15 +173,20 @@
exit(EXIT_FAILURE);
}
- bool need_wss = wss_reset || show_wss;
- ProcMemInfo proc(pid, need_wss);
- if (wss_reset) {
- if (!proc.WssReset()) {
+ if (reset_wss) {
+ if (!ProcMemInfo::ResetWorkingSet(pid)) {
std::cerr << "Failed to reset working set of pid : " << pid << std::endl;
exit(EXIT_FAILURE);
}
return 0;
}
- return show(proc, hide_zeroes, show_wss);
+ ProcMemInfo proc(pid, show_wss);
+ const MemUsage& proc_stats = show_wss ? proc.Wss() : proc.Usage();
+ std::vector<Vma> maps(proc.Maps());
+ if (sort_func != nullptr) {
+ std::sort(maps.begin(), maps.end(), sort_func);
+ }
+
+ return show(proc_stats, maps);
}
diff --git a/libmeminfo/tools/procrank.cpp b/libmeminfo/tools/procrank.cpp
new file mode 100644
index 0000000..e39e7fa
--- /dev/null
+++ b/libmeminfo/tools/procrank.cpp
@@ -0,0 +1,530 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <dirent.h>
+#include <errno.h>
+#include <inttypes.h>
+#include <linux/kernel-page-flags.h>
+#include <linux/oom.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <iostream>
+#include <memory>
+#include <sstream>
+#include <vector>
+
+#include <android-base/file.h>
+#include <android-base/parseint.h>
+#include <android-base/stringprintf.h>
+#include <android-base/strings.h>
+
+#include <meminfo/procmeminfo.h>
+#include <meminfo/sysmeminfo.h>
+
+using ::android::meminfo::MemUsage;
+using ::android::meminfo::ProcMemInfo;
+
+struct ProcessRecord {
+ public:
+ ProcessRecord(pid_t pid, bool get_wss = false, uint64_t pgflags = 0, uint64_t pgflags_mask = 0)
+ : pid_(-1),
+ procmem_(nullptr),
+ oomadj_(OOM_SCORE_ADJ_MAX + 1),
+ cmdline_(""),
+ proportional_swap_(0),
+ unique_swap_(0),
+ zswap_(0) {
+ std::unique_ptr<ProcMemInfo> procmem =
+ std::make_unique<ProcMemInfo>(pid, get_wss, pgflags, pgflags_mask);
+ if (procmem == nullptr) {
+ std::cerr << "Failed to create ProcMemInfo for: " << pid << std::endl;
+ return;
+ }
+
+ std::string fname = ::android::base::StringPrintf("/proc/%d/oom_score_adj", pid);
+ auto oomscore_fp =
+ std::unique_ptr<FILE, decltype(&fclose)>{fopen(fname.c_str(), "re"), fclose};
+ if (oomscore_fp == nullptr) {
+ std::cerr << "Failed to open oom_score_adj file: " << fname << std::endl;
+ return;
+ }
+
+ if (fscanf(oomscore_fp.get(), "%d\n", &oomadj_) != 1) {
+ std::cerr << "Failed to read oomadj from: " << fname << std::endl;
+ return;
+ }
+
+ fname = ::android::base::StringPrintf("/proc/%d/cmdline", pid);
+ if (!::android::base::ReadFileToString(fname, &cmdline_)) {
+ std::cerr << "Failed to read cmdline from: " << fname << std::endl;
+ cmdline_ = "<unknown>";
+ }
+ // We deliberately don't read the proc/<pid>cmdline file directly into 'cmdline_'
+ // because of some processes showing up cmdlines that end with "0x00 0x0A 0x00"
+ // e.g. xtra-daemon, lowi-server
+ // The .c_str() assignment below then takes care of trimming the cmdline at the first
+ // 0x00. This is how original procrank worked (luckily)
+ cmdline_.resize(strlen(cmdline_.c_str()));
+ procmem_ = std::move(procmem);
+ pid_ = pid;
+ }
+
+ bool valid() const { return pid_ != -1; }
+
+ void CalculateSwap(const uint16_t* swap_offset_array, float zram_compression_ratio) {
+ const std::vector<uint16_t>& swp_offs = procmem_->SwapOffsets();
+ for (auto& off : swp_offs) {
+ proportional_swap_ += getpagesize() / swap_offset_array[off];
+ unique_swap_ += swap_offset_array[off] == 1 ? getpagesize() : 0;
+ zswap_ = proportional_swap_ * zram_compression_ratio;
+ }
+ }
+
+ // Getters
+ pid_t pid() const { return pid_; }
+ const std::string& cmdline() const { return cmdline_; }
+ int32_t oomadj() const { return oomadj_; }
+ uint64_t proportional_swap() const { return proportional_swap_; }
+ uint64_t unique_swap() const { return unique_swap_; }
+ uint64_t zswap() const { return zswap_; }
+
+ // Wrappers to ProcMemInfo
+ const std::vector<uint16_t>& SwapOffsets() const { return procmem_->SwapOffsets(); }
+ const MemUsage& Usage() const { return procmem_->Usage(); }
+ const MemUsage& Wss() const { return procmem_->Wss(); }
+
+ private:
+ pid_t pid_;
+ std::unique_ptr<ProcMemInfo> procmem_;
+ int32_t oomadj_;
+ std::string cmdline_;
+ uint64_t proportional_swap_;
+ uint64_t unique_swap_;
+ uint64_t zswap_;
+};
+
+// Show working set instead of memory consumption
+bool show_wss = false;
+// Reset working set of each process
+bool reset_wss = false;
+// Show per-process oom_score_adj column
+bool show_oomadj = false;
+// True if the device has swap enabled
+bool has_swap = false;
+// True, if device has zram enabled
+bool has_zram = false;
+// If zram is enabled, the compression ratio is zram used / swap used.
+float zram_compression_ratio = 0.0;
+// Sort process in reverse, default is descending
+bool reverse_sort = false;
+
+// Calculated total memory usage across all processes in the system
+uint64_t total_pss = 0;
+uint64_t total_uss = 0;
+uint64_t total_swap = 0;
+uint64_t total_pswap = 0;
+uint64_t total_uswap = 0;
+uint64_t total_zswap = 0;
+
+static void usage(const char* myname) {
+ std::cerr << "Usage: " << myname << " [ -W ] [ -v | -r | -p | -u | -s | -h ]" << std::endl
+ << " -v Sort by VSS." << std::endl
+ << " -r Sort by RSS." << std::endl
+ << " -p Sort by PSS." << std::endl
+ << " -u Sort by USS." << std::endl
+ << " -s Sort by swap." << std::endl
+ << " (Default sort order is PSS.)" << std::endl
+ << " -R Reverse sort order (default is descending)." << std::endl
+ << " -c Only show cached (storage backed) pages" << std::endl
+ << " -C Only show non-cached (ram/swap backed) pages" << std::endl
+ << " -k Only show pages collapsed by KSM" << std::endl
+ << " -w Display statistics for working set only." << std::endl
+ << " -W Reset working set of all processes." << std::endl
+ << " -o Show and sort by oom score against lowmemorykiller thresholds."
+ << std::endl
+ << " -h Display this help screen." << std::endl;
+}
+
+static bool read_all_pids(std::vector<pid_t>* pids, std::function<bool(pid_t pid)> for_each_pid) {
+ pids->clear();
+ std::unique_ptr<DIR, int (*)(DIR*)> procdir(opendir("/proc"), closedir);
+ if (!procdir) return false;
+
+ struct dirent* dir;
+ pid_t pid;
+ while ((dir = readdir(procdir.get()))) {
+ if (!::android::base::ParseInt(dir->d_name, &pid)) continue;
+ if (!for_each_pid(pid)) return false;
+ pids->push_back(pid);
+ }
+
+ return true;
+}
+
+static bool count_swap_offsets(const ProcessRecord& proc, uint16_t* swap_offset_array,
+ uint32_t size) {
+ const std::vector<uint16_t>& swp_offs = proc.SwapOffsets();
+ for (auto& off : swp_offs) {
+ if (off >= size) {
+ std::cerr << "swap offset " << off << " is out of bounds for process: " << proc.pid()
+ << std::endl;
+ return false;
+ }
+
+ if (swap_offset_array[off] == USHRT_MAX) {
+ std::cerr << "swap offset " << off << " ref count overflow in process: " << proc.pid()
+ << std::endl;
+ return false;
+ }
+
+ swap_offset_array[off]++;
+ }
+
+ return true;
+}
+
+static void print_header(std::stringstream& ss) {
+ ss.str("");
+ ss << ::android::base::StringPrintf("%5s ", "PID");
+ if (show_oomadj) {
+ ss << ::android::base::StringPrintf("%5s ", "oom");
+ }
+
+ if (show_wss) {
+ ss << ::android::base::StringPrintf("%7s %7s %7s ", "WRss", "WPss", "WUss");
+ // now swap statistics here, working set pages by definition shouldn't end up in swap.
+ } else {
+ ss << ::android::base::StringPrintf("%8s %7s %7s %7s ", "Vss", "Rss", "Pss", "Uss");
+ if (has_swap) {
+ ss << ::android::base::StringPrintf("%7s %7s %7s ", "Swap", "PSwap", "USwap");
+ if (has_zram) {
+ ss << ::android::base::StringPrintf("%7s ", "ZSwap");
+ }
+ }
+ }
+
+ ss << "cmdline";
+}
+
+static void print_process_record(std::stringstream& ss, ProcessRecord& proc) {
+ ss << ::android::base::StringPrintf("%5d ", proc.pid());
+ if (show_oomadj) {
+ ss << ::android::base::StringPrintf("%5d ", proc.oomadj());
+ }
+
+ if (show_wss) {
+ ss << ::android::base::StringPrintf("%6" PRIu64 "K %6" PRIu64 "K %6" PRIu64 "K ",
+ proc.Wss().rss / 1024, proc.Wss().pss / 1024,
+ proc.Wss().uss / 1024);
+ } else {
+ ss << ::android::base::StringPrintf("%7" PRIu64 "K %6" PRIu64 "K %6" PRIu64 "K %6" PRIu64
+ "K ",
+ proc.Usage().vss / 1024, proc.Usage().rss / 1024,
+ proc.Usage().pss / 1024, proc.Usage().uss / 1024);
+ if (has_swap) {
+ ss << ::android::base::StringPrintf("%6" PRIu64 "K ", proc.Usage().swap / 1024);
+ ss << ::android::base::StringPrintf("%6" PRIu64 "K ", proc.proportional_swap() / 1024);
+ ss << ::android::base::StringPrintf("%6" PRIu64 "K ", proc.unique_swap() / 1024);
+ if (has_zram) {
+ ss << ::android::base::StringPrintf("%6" PRIu64 "K ", (proc.zswap() / 1024));
+ }
+ }
+ }
+}
+
+static void print_processes(std::stringstream& ss, std::vector<ProcessRecord>& procs,
+ uint16_t* swap_offset_array) {
+ for (auto& proc : procs) {
+ total_pss += show_wss ? proc.Wss().pss : proc.Usage().pss;
+ total_uss += show_wss ? proc.Wss().uss : proc.Usage().uss;
+ if (!show_wss && has_swap) {
+ proc.CalculateSwap(swap_offset_array, zram_compression_ratio);
+ total_swap += proc.Usage().swap;
+ total_pswap += proc.proportional_swap();
+ total_uswap += proc.unique_swap();
+ if (has_zram) {
+ total_zswap += proc.zswap();
+ }
+ }
+
+ print_process_record(ss, proc);
+ ss << proc.cmdline() << std::endl;
+ }
+}
+
+static void print_separator(std::stringstream& ss) {
+ ss << ::android::base::StringPrintf("%5s ", "");
+ if (show_oomadj) {
+ ss << ::android::base::StringPrintf("%5s ", "");
+ }
+
+ if (show_wss) {
+ ss << ::android::base::StringPrintf("%7s %7s %7s ", "", "------", "------");
+ } else {
+ ss << ::android::base::StringPrintf("%8s %7s %7s %7s ", "", "", "------", "------");
+ if (has_swap) {
+ ss << ::android::base::StringPrintf("%7s %7s %7s ", "------", "------", "------");
+ if (has_zram) {
+ ss << ::android::base::StringPrintf("%7s ", "------");
+ }
+ }
+ }
+
+ ss << ::android::base::StringPrintf("%s", "------");
+}
+
+static void print_totals(std::stringstream& ss) {
+ ss << ::android::base::StringPrintf("%5s ", "");
+ if (show_oomadj) {
+ ss << ::android::base::StringPrintf("%5s ", "");
+ }
+
+ if (show_wss) {
+ ss << ::android::base::StringPrintf("%7s %6" PRIu64 "K %6" PRIu64 "K ", "",
+ total_pss / 1024, total_uss / 1024);
+ } else {
+ ss << ::android::base::StringPrintf("%8s %7s %6" PRIu64 "K %6" PRIu64 "K ", "", "",
+ total_pss / 1024, total_uss / 1024);
+ if (has_swap) {
+ ss << ::android::base::StringPrintf("%6" PRIu64 "K ", total_swap / 1024);
+ ss << ::android::base::StringPrintf("%6" PRIu64 "K ", total_pswap / 1024);
+ ss << ::android::base::StringPrintf("%6" PRIu64 "K ", total_uswap / 1024);
+ if (has_zram) {
+ ss << ::android::base::StringPrintf("%6" PRIu64 "K ", total_zswap / 1024);
+ }
+ }
+ }
+ ss << "TOTAL";
+}
+
+static void print_sysmeminfo(std::stringstream& ss, ::android::meminfo::SysMemInfo& smi) {
+ if (has_swap) {
+ ss << ::android::base::StringPrintf("ZRAM: %" PRIu64 "K physical used for %" PRIu64
+ "K in swap "
+ "(%" PRIu64 "K total swap)",
+ smi.mem_zram_kb(),
+ (smi.mem_swap_kb() - smi.mem_swap_free_kb()),
+ smi.mem_swap_kb())
+ << std::endl;
+ }
+
+ ss << ::android::base::StringPrintf(" RAM: %" PRIu64 "K total, %" PRIu64 "K free, %" PRIu64
+ "K buffers, "
+ "%" PRIu64 "K cached, %" PRIu64 "K shmem, %" PRIu64
+ "K slab",
+ smi.mem_total_kb(), smi.mem_free_kb(), smi.mem_buffers_kb(),
+ smi.mem_cached_kb(), smi.mem_shmem_kb(), smi.mem_slab_kb());
+}
+
+int main(int argc, char* argv[]) {
+ auto pss_sort = [](ProcessRecord& a, ProcessRecord& b) {
+ MemUsage stats_a = show_wss ? a.Wss() : a.Usage();
+ MemUsage stats_b = show_wss ? b.Wss() : b.Usage();
+ return reverse_sort ? stats_a.pss < stats_b.pss : stats_a.pss > stats_b.pss;
+ };
+
+ auto uss_sort = [](ProcessRecord& a, ProcessRecord& b) {
+ MemUsage stats_a = show_wss ? a.Wss() : a.Usage();
+ MemUsage stats_b = show_wss ? b.Wss() : b.Usage();
+ return reverse_sort ? stats_a.uss < stats_b.uss : stats_a.uss > stats_b.uss;
+ };
+
+ auto rss_sort = [](ProcessRecord& a, ProcessRecord& b) {
+ MemUsage stats_a = show_wss ? a.Wss() : a.Usage();
+ MemUsage stats_b = show_wss ? b.Wss() : b.Usage();
+ return reverse_sort ? stats_a.rss < stats_b.pss : stats_a.pss > stats_b.pss;
+ };
+
+ auto vss_sort = [](ProcessRecord& a, ProcessRecord& b) {
+ MemUsage stats_a = show_wss ? a.Wss() : a.Usage();
+ MemUsage stats_b = show_wss ? b.Wss() : b.Usage();
+ return reverse_sort ? stats_a.vss < stats_b.vss : stats_a.vss > stats_b.vss;
+ };
+
+ auto swap_sort = [](ProcessRecord& a, ProcessRecord& b) {
+ MemUsage stats_a = show_wss ? a.Wss() : a.Usage();
+ MemUsage stats_b = show_wss ? b.Wss() : b.Usage();
+ return reverse_sort ? stats_a.swap < stats_b.swap : stats_a.swap > stats_b.swap;
+ };
+
+ auto oomadj_sort = [](ProcessRecord& a, ProcessRecord& b) {
+ return reverse_sort ? a.oomadj() < b.oomadj() : a.oomadj() > b.oomadj();
+ };
+
+ // default PSS sort
+ std::function<bool(ProcessRecord & a, ProcessRecord & b)> proc_sort = pss_sort;
+
+ // count all pages by default
+ uint64_t pgflags = 0;
+ uint64_t pgflags_mask = 0;
+
+ int opt;
+ while ((opt = getopt(argc, argv, "cChkoprRsuvwW")) != -1) {
+ switch (opt) {
+ case 'c':
+ pgflags = 0;
+ pgflags_mask = (1 << KPF_SWAPBACKED);
+ break;
+ case 'C':
+ pgflags = (1 << KPF_SWAPBACKED);
+ pgflags_mask = (1 << KPF_SWAPBACKED);
+ break;
+ case 'h':
+ usage(argv[0]);
+ return 0;
+ break;
+ case 'k':
+ pgflags = (1 << KPF_KSM);
+ pgflags_mask = (1 << KPF_KSM);
+ break;
+ case 'o':
+ proc_sort = oomadj_sort;
+ show_oomadj = true;
+ break;
+ case 'p':
+ proc_sort = pss_sort;
+ break;
+ case 'r':
+ proc_sort = rss_sort;
+ break;
+ case 'R':
+ reverse_sort = true;
+ break;
+ case 's':
+ proc_sort = swap_sort;
+ break;
+ case 'u':
+ proc_sort = uss_sort;
+ break;
+ case 'v':
+ proc_sort = vss_sort;
+ break;
+ case 'w':
+ show_wss = true;
+ break;
+ case 'W':
+ reset_wss = true;
+ break;
+ default:
+ abort();
+ }
+ }
+
+ std::vector<pid_t> pids;
+ std::vector<ProcessRecord> procs;
+ if (reset_wss) {
+ if (!read_all_pids(&pids,
+ [&](pid_t pid) -> bool { return ProcMemInfo::ResetWorkingSet(pid); })) {
+ std::cerr << "Failed to reset working set of all processes" << std::endl;
+ exit(EXIT_FAILURE);
+ }
+ // we are done, all other options passed to procrank are ignored in the presence of '-W'
+ return 0;
+ }
+
+ ::android::meminfo::SysMemInfo smi;
+ if (!smi.ReadMemInfo()) {
+ std::cerr << "Failed to get system memory info" << std::endl;
+ exit(EXIT_FAILURE);
+ }
+
+ // Figure out swap and zram
+ uint64_t swap_total = smi.mem_swap_kb() * 1024;
+ has_swap = swap_total > 0;
+ // Allocate the swap array
+ auto swap_offset_array = std::make_unique<uint16_t[]>(swap_total / getpagesize());
+ if (has_swap) {
+ has_zram = smi.mem_zram_kb() > 0;
+ if (has_zram) {
+ zram_compression_ratio = static_cast<float>(smi.mem_zram_kb()) /
+ (smi.mem_swap_kb() - smi.mem_swap_free_kb());
+ }
+ }
+
+ auto mark_swap_usage = [&](pid_t pid) -> bool {
+ ProcessRecord proc(pid, show_wss, pgflags, pgflags_mask);
+ if (!proc.valid()) {
+ std::cerr << "Failed to create process record for: " << pid << std::endl;
+ return false;
+ }
+
+ // Skip processes with no memory mappings
+ uint64_t vss = show_wss ? proc.Wss().vss : proc.Usage().vss;
+ if (vss == 0) return true;
+
+ // collect swap_offset counts from all processes in 1st pass
+ if (!show_wss && has_swap &&
+ !count_swap_offsets(proc, swap_offset_array.get(), swap_total / getpagesize())) {
+ std::cerr << "Failed to count swap offsets for process: " << pid << std::endl;
+ return false;
+ }
+
+ procs.push_back(std::move(proc));
+ return true;
+ };
+
+ // Get a list of all pids currently running in the system in
+ // 1st pass through all processes. Mark each swap offset used by the process as we find them
+ // for calculating proportional swap usage later.
+ if (!read_all_pids(&pids, mark_swap_usage)) {
+ std::cerr << "Failed to read all pids from the system" << std::endl;
+ exit(EXIT_FAILURE);
+ }
+
+ std::stringstream ss;
+ if (procs.empty()) {
+ // This would happen in corner cases where procrank is being run to find KSM usage on a
+ // system with no KSM and combined with working set determination as follows
+ // procrank -w -u -k
+ // procrank -w -s -k
+ // procrank -w -o -k
+ ss << "<empty>" << std::endl << std::endl;
+ print_sysmeminfo(ss, smi);
+ ss << std::endl;
+ std::cout << ss.str();
+ return 0;
+ }
+
+ // Sort all process records, default is PSS descending
+ std::sort(procs.begin(), procs.end(), proc_sort);
+
+ // start dumping output in string stream
+ print_header(ss);
+ ss << std::endl;
+
+ // 2nd pass to calculate and get per process stats to add them up
+ print_processes(ss, procs, swap_offset_array.get());
+
+ // Add separator to output
+ print_separator(ss);
+ ss << std::endl;
+
+ // Add totals to output
+ print_totals(ss);
+ ss << std::endl << std::endl;
+
+ // Add system information at the end
+ print_sysmeminfo(ss, smi);
+ ss << std::endl;
+
+ // dump on the screen
+ std::cout << ss.str();
+
+ return 0;
+}
diff --git a/libmemunreachable/HeapWalker.cpp b/libmemunreachable/HeapWalker.cpp
index a046dad..89837f7 100644
--- a/libmemunreachable/HeapWalker.cpp
+++ b/libmemunreachable/HeapWalker.cpp
@@ -35,6 +35,13 @@
end = begin + 1;
}
Range range{begin, end};
+ if (valid_mappings_range_.end != 0 &&
+ (begin < valid_mappings_range_.begin || end > valid_mappings_range_.end)) {
+ MEM_LOG_ALWAYS_FATAL("allocation %p-%p is outside mapping range %p-%p",
+ reinterpret_cast<void*>(begin), reinterpret_cast<void*>(end),
+ reinterpret_cast<void*>(valid_mappings_range_.begin),
+ reinterpret_cast<void*>(valid_mappings_range_.end));
+ }
auto inserted = allocations_.insert(std::pair<Range, AllocationInfo>(range, AllocationInfo{}));
if (inserted.second) {
valid_allocations_range_.begin = std::min(valid_allocations_range_.begin, begin);
@@ -87,6 +94,11 @@
}
}
+void HeapWalker::Mapping(uintptr_t begin, uintptr_t end) {
+ valid_mappings_range_.begin = std::min(valid_mappings_range_.begin, begin);
+ valid_mappings_range_.end = std::max(valid_mappings_range_.end, end);
+}
+
void HeapWalker::Root(uintptr_t begin, uintptr_t end) {
roots_.push_back(Range{begin, end});
}
diff --git a/libmemunreachable/HeapWalker.h b/libmemunreachable/HeapWalker.h
index b37cc62..9e3db08 100644
--- a/libmemunreachable/HeapWalker.h
+++ b/libmemunreachable/HeapWalker.h
@@ -59,6 +59,8 @@
segv_page_count_(0) {
valid_allocations_range_.end = 0;
valid_allocations_range_.begin = ~valid_allocations_range_.end;
+ valid_mappings_range_.end = 0;
+ valid_mappings_range_.begin = ~valid_allocations_range_.end;
segv_handler_.install(
SIGSEGV, [=](ScopedSignalHandler& handler, int signal, siginfo_t* siginfo, void* uctx) {
@@ -68,6 +70,7 @@
~HeapWalker() {}
bool Allocation(uintptr_t begin, uintptr_t end);
+ void Mapping(uintptr_t begin, uintptr_t end);
void Root(uintptr_t begin, uintptr_t end);
void Root(const allocator::vector<uintptr_t>& vals);
@@ -98,6 +101,7 @@
AllocationMap allocations_;
size_t allocation_bytes_;
Range valid_allocations_range_;
+ Range valid_mappings_range_;
allocator::vector<Range> roots_;
allocator::vector<uintptr_t> root_vals_;
diff --git a/libmemunreachable/MemUnreachable.cpp b/libmemunreachable/MemUnreachable.cpp
index b160de9..3d7b8a8 100644
--- a/libmemunreachable/MemUnreachable.cpp
+++ b/libmemunreachable/MemUnreachable.cpp
@@ -87,6 +87,11 @@
const allocator::vector<Mapping>& mappings,
const allocator::vector<uintptr_t>& refs) {
MEM_ALOGI("searching process %d for allocations", pid_);
+
+ for (auto it = mappings.begin(); it != mappings.end(); it++) {
+ heap_walker_.Mapping(it->begin, it->end);
+ }
+
allocator::vector<Mapping> heap_mappings{mappings};
allocator::vector<Mapping> anon_mappings{mappings};
allocator::vector<Mapping> globals_mappings{mappings};
diff --git a/libmemunreachable/tests/HeapWalker_test.cpp b/libmemunreachable/tests/HeapWalker_test.cpp
index 84a0ec6..9610cd6 100644
--- a/libmemunreachable/tests/HeapWalker_test.cpp
+++ b/libmemunreachable/tests/HeapWalker_test.cpp
@@ -73,6 +73,24 @@
ASSERT_FALSE(heap_walker.Allocation(2, 3));
}
+TEST_F(HeapWalkerTest, mapping) {
+ HeapWalker heap_walker(heap_);
+ heap_walker.Mapping(2, 3);
+ heap_walker.Mapping(4, 5);
+ ASSERT_TRUE(heap_walker.Allocation(2, 3));
+ ASSERT_TRUE(heap_walker.Allocation(4, 5));
+ // space between mappings is not checked, but could be in the future
+ ASSERT_TRUE(heap_walker.Allocation(3, 4));
+
+ // re-enable malloc, ASSERT_DEATH may allocate
+ disable_malloc_.Enable();
+ ASSERT_DEATH({ heap_walker.Allocation(1, 2); }, "0x1-0x2.*outside.*0x2-0x5");
+ ASSERT_DEATH({ heap_walker.Allocation(1, 3); }, "0x1-0x3.*outside.*0x2-0x5");
+ ASSERT_DEATH({ heap_walker.Allocation(4, 6); }, "0x4-0x6.*outside.*0x2-0x5");
+ ASSERT_DEATH({ heap_walker.Allocation(5, 6); }, "0x5-0x6.*outside.*0x2-0x5");
+ ASSERT_DEATH({ heap_walker.Allocation(1, 6); }, "0x1-0x6.*outside.*0x2-0x5");
+}
+
#define buffer_begin(buffer) reinterpret_cast<uintptr_t>(buffer)
#define buffer_end(buffer) (reinterpret_cast<uintptr_t>(buffer) + sizeof(buffer))
diff --git a/libmetricslogger/include/metricslogger/metrics_logger.h b/libmetricslogger/include/metricslogger/metrics_logger.h
index 56bd6c4..71c04a6 100644
--- a/libmetricslogger/include/metricslogger/metrics_logger.h
+++ b/libmetricslogger/include/metricslogger/metrics_logger.h
@@ -116,7 +116,7 @@
FIELD_BATTERY_RESISTANCE_UOHMS = 1448,
FIELD_BATTERY_CURRENT_UA = 1449,
FIELD_HARDWARE_LOCATION = 1450,
- ACTION_BATTERY_CAUSED_SHUTDOWN = 1441,
+ ACTION_BATTERY_CAUSED_SHUTDOWN = 1451,
};
enum {
diff --git a/libpixelflinger/codeflinger/CodeCache.cpp b/libpixelflinger/codeflinger/CodeCache.cpp
index 8516640..32691a3 100644
--- a/libpixelflinger/codeflinger/CodeCache.cpp
+++ b/libpixelflinger/codeflinger/CodeCache.cpp
@@ -61,7 +61,11 @@
#define USAGE_ERROR_ACTION(m,p) \
heap_error("ARGUMENT IS INVALID HEAP ADDRESS", __FUNCTION__, p)
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wexpansion-to-defined"
+#pragma GCC diagnostic ignored "-Wnull-pointer-arithmetic"
#include "../../../../external/dlmalloc/malloc.c"
+#pragma GCC diagnostic pop
static void heap_error(const char* msg, const char* function, void* p) {
ALOG(LOG_FATAL, LOG_TAG, "@@@ ABORTING: CODE FLINGER: %s IN %s addr=%p",
diff --git a/libprocinfo/include/procinfo/process_map.h b/libprocinfo/include/procinfo/process_map.h
index 0fc4201..981241e 100644
--- a/libprocinfo/include/procinfo/process_map.h
+++ b/libprocinfo/include/procinfo/process_map.h
@@ -17,6 +17,7 @@
#pragma once
#include <stdlib.h>
+#include <string.h>
#include <sys/mman.h>
#include <sys/types.h>
diff --git a/libsparse/output_file.cpp b/libsparse/output_file.cpp
index fe314b3..5b8179f 100644
--- a/libsparse/output_file.cpp
+++ b/libsparse/output_file.cpp
@@ -508,7 +508,7 @@
out->len = len;
out->block_size = block_size;
- out->cur_out_ptr = 0ll;
+ out->cur_out_ptr = 0LL;
out->chunk_cnt = 0;
out->crc32 = 0;
out->use_crc = crc;
diff --git a/libstats/include/stats_event_list.h b/libstats/include/stats_event_list.h
index a9832db..41ca79b 100644
--- a/libstats/include/stats_event_list.h
+++ b/libstats/include/stats_event_list.h
@@ -26,7 +26,7 @@
int write_to_logger(android_log_context context, log_id_t id);
void note_log_drop();
void stats_log_close();
-
+int android_log_write_char_array(android_log_context ctx, const char* value, size_t len);
#ifdef __cplusplus
}
#endif
@@ -244,6 +244,14 @@
return ret >= 0;
}
+ bool AppendCharArray(const char* value, size_t len) {
+ int retval = android_log_write_char_array(ctx, value, len);
+ if (retval < 0) {
+ ret = retval;
+ }
+ return ret >= 0;
+ }
+
android_log_list_element read() { return android_log_read_next(ctx); }
android_log_list_element peek() { return android_log_peek_next(ctx); }
};
diff --git a/libstats/stats_event_list.c b/libstats/stats_event_list.c
index 72770d4..f4a7e94 100644
--- a/libstats/stats_event_list.c
+++ b/libstats/stats_event_list.c
@@ -193,3 +193,47 @@
errno = save_errno;
return ret;
}
+
+static inline void copy4LE(uint8_t* buf, uint32_t val) {
+ buf[0] = val & 0xFF;
+ buf[1] = (val >> 8) & 0xFF;
+ buf[2] = (val >> 16) & 0xFF;
+ buf[3] = (val >> 24) & 0xFF;
+}
+
+// Note: this function differs from android_log_write_string8_len in that the length passed in
+// should be treated as actual length and not max length.
+int android_log_write_char_array(android_log_context ctx, const char* value, size_t actual_len) {
+ size_t needed;
+ ssize_t len = actual_len;
+ android_log_context_internal* context;
+
+ context = (android_log_context_internal*)ctx;
+ if (!context || (kAndroidLoggerWrite != context->read_write_flag)) {
+ return -EBADF;
+ }
+ if (context->overflow) {
+ return -EIO;
+ }
+ if (!value) {
+ value = "";
+ len = 0;
+ }
+ needed = sizeof(uint8_t) + sizeof(int32_t) + len;
+ if ((context->pos + needed) > MAX_EVENT_PAYLOAD) {
+ /* Truncate string for delivery */
+ len = MAX_EVENT_PAYLOAD - context->pos - 1 - sizeof(int32_t);
+ if (len <= 0) {
+ context->overflow = true;
+ return -EIO;
+ }
+ }
+ context->count[context->list_nest_depth]++;
+ context->storage[context->pos + 0] = EVENT_TYPE_STRING;
+ copy4LE(&context->storage[context->pos + 1], len);
+ if (len) {
+ memcpy(&context->storage[context->pos + 5], value, len);
+ }
+ context->pos += needed;
+ return len;
+}
diff --git a/libsysutils/Android.bp b/libsysutils/Android.bp
index 29d23c8..da5d86c 100644
--- a/libsysutils/Android.bp
+++ b/libsysutils/Android.bp
@@ -1,4 +1,4 @@
-cc_library_shared {
+cc_library {
name: "libsysutils",
vendor_available: true,
vndk: {
diff --git a/libunwindstack/Android.bp b/libunwindstack/Android.bp
index a5e0dc9..89d4fc0 100644
--- a/libunwindstack/Android.bp
+++ b/libunwindstack/Android.bp
@@ -94,7 +94,10 @@
"DexFile.cpp",
"DexFiles.cpp",
],
- exclude_shared_libs: ["libdexfile"],
+ exclude_shared_libs: [
+ "libdexfile_external",
+ "libdexfile_support",
+ ],
},
recovery: {
cflags: ["-DNO_LIBDEXFILE_SUPPORT"],
@@ -102,7 +105,10 @@
"DexFile.cpp",
"DexFiles.cpp",
],
- exclude_shared_libs: ["libdexfile"],
+ exclude_shared_libs: [
+ "libdexfile_external",
+ "libdexfile_support",
+ ],
},
},
@@ -127,7 +133,8 @@
shared_libs: [
"libbase",
- "libdexfile",
+ "libdexfile_external",
+ "libdexfile_support",
"liblog",
"liblzma",
],
@@ -215,6 +222,7 @@
"liblzma",
"libunwindstack",
"libdexfile",
+ "libdexfile_support",
],
static_libs: [
@@ -235,6 +243,8 @@
"tests/files/offline/jit_map_arm/*",
"tests/files/offline/gnu_debugdata_arm/*",
"tests/files/offline/offset_arm/*",
+ "tests/files/offline/shared_lib_in_apk_arm64/*",
+ "tests/files/offline/shared_lib_in_apk_memory_only_arm64/*",
"tests/files/offline/straddle_arm/*",
"tests/files/offline/straddle_arm64/*",
],
diff --git a/libunwindstack/DexFile.cpp b/libunwindstack/DexFile.cpp
index 8ec560c..9b0b232 100644
--- a/libunwindstack/DexFile.cpp
+++ b/libunwindstack/DexFile.cpp
@@ -23,13 +23,7 @@
#include <memory>
#include <android-base/unique_fd.h>
-
-#include <dex/class_accessor-inl.h>
-#include <dex/code_item_accessors-inl.h>
-#include <dex/compact_dex_file.h>
-#include <dex/dex_file-inl.h>
-#include <dex/dex_file_loader.h>
-#include <dex/standard_dex_file.h>
+#include <art_api/ext_dex_file.h>
#include <unwindstack/MapInfo.h>
#include <unwindstack/Memory.h>
@@ -38,169 +32,71 @@
namespace unwindstack {
-DexFile* DexFile::Create(uint64_t dex_file_offset_in_memory, Memory* memory, MapInfo* info) {
+std::unique_ptr<DexFile> DexFile::Create(uint64_t dex_file_offset_in_memory, Memory* memory,
+ MapInfo* info) {
if (!info->name.empty()) {
- std::unique_ptr<DexFileFromFile> dex_file(new DexFileFromFile);
- if (dex_file->Open(dex_file_offset_in_memory - info->start + info->offset, info->name)) {
- return dex_file.release();
+ std::unique_ptr<DexFile> dex_file =
+ DexFileFromFile::Create(dex_file_offset_in_memory - info->start + info->offset, info->name);
+ if (dex_file) {
+ return dex_file;
}
}
-
- std::unique_ptr<DexFileFromMemory> dex_file(new DexFileFromMemory);
- if (dex_file->Open(dex_file_offset_in_memory, memory)) {
- return dex_file.release();
- }
- return nullptr;
-}
-
-DexFileFromFile::~DexFileFromFile() {
- if (size_ != 0) {
- munmap(mapped_memory_, size_);
- }
+ return DexFileFromMemory::Create(dex_file_offset_in_memory, memory, info->name);
}
bool DexFile::GetMethodInformation(uint64_t dex_offset, std::string* method_name,
uint64_t* method_offset) {
- if (dex_file_ == nullptr) {
+ art_api::dex::MethodInfo method_info = GetMethodInfoForOffset(dex_offset);
+ if (method_info.offset == 0) {
return false;
}
-
- if (!dex_file_->IsInDataSection(dex_file_->Begin() + dex_offset)) {
- return false; // The DEX offset is not within the bytecode of this dex file.
- }
-
- if (dex_file_->IsCompactDexFile()) {
- // The data section of compact dex files might be shared.
- // Check the subrange unique to this compact dex.
- const auto& cdex_header = dex_file_->AsCompactDexFile()->GetHeader();
- uint32_t begin = cdex_header.data_off_ + cdex_header.OwnedDataBegin();
- uint32_t end = cdex_header.data_off_ + cdex_header.OwnedDataEnd();
- if (dex_offset < begin || dex_offset >= end) {
- return false; // The DEX offset is not within the bytecode of this dex file.
- }
- }
-
- // The method data is cached in a std::map indexed by method end offset and
- // contains the start offset and the method member index.
- // Only cache the method data as it is searched. Do not read the entire
- // set of method data into the cache at once.
- // This is done because many unwinds only find a single frame with dex file
- // info, so reading the entire method data is wasteful. However, still cache
- // the data so that anything doing multiple unwinds will have this data
- // cached for future use.
-
- // First look in the method cache.
- auto entry = method_cache_.upper_bound(dex_offset);
- if (entry != method_cache_.end() && dex_offset >= entry->second.first) {
- *method_name = dex_file_->PrettyMethod(entry->second.second, false);
- *method_offset = dex_offset - entry->second.first;
- return true;
- }
-
- // Check the methods we haven't cached.
- for (; class_def_index_ < dex_file_->NumClassDefs(); class_def_index_++) {
- art::ClassAccessor accessor(*dex_file_, dex_file_->GetClassDef(class_def_index_));
-
- for (const art::ClassAccessor::Method& method : accessor.GetMethods()) {
- art::CodeItemInstructionAccessor code = method.GetInstructions();
- if (!code.HasCodeItem()) {
- continue;
- }
- uint32_t offset = reinterpret_cast<const uint8_t*>(code.Insns()) - dex_file_->Begin();
- uint32_t offset_end = offset + code.InsnsSizeInBytes();
- uint32_t member_index = method.GetIndex();
- method_cache_[offset_end] = std::make_pair(offset, member_index);
- if (offset <= dex_offset && dex_offset < offset_end) {
- *method_name = dex_file_->PrettyMethod(member_index, false);
- *method_offset = dex_offset - offset;
- return true;
- }
- }
- }
- return false;
+ *method_name = method_info.name;
+ *method_offset = dex_offset - method_info.offset;
+ return true;
}
-bool DexFileFromFile::Open(uint64_t dex_file_offset_in_file, const std::string& file) {
+std::unique_ptr<DexFileFromFile> DexFileFromFile::Create(uint64_t dex_file_offset_in_file,
+ const std::string& file) {
android::base::unique_fd fd(TEMP_FAILURE_RETRY(open(file.c_str(), O_RDONLY | O_CLOEXEC)));
if (fd == -1) {
- return false;
- }
- struct stat buf;
- if (fstat(fd, &buf) == -1) {
- return false;
- }
- uint64_t length;
- if (buf.st_size < 0 ||
- __builtin_add_overflow(dex_file_offset_in_file, sizeof(art::DexFile::Header), &length) ||
- static_cast<uint64_t>(buf.st_size) < length) {
- return false;
+ return nullptr;
}
- mapped_memory_ = mmap(nullptr, buf.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
- if (mapped_memory_ == MAP_FAILED) {
- return false;
- }
- size_ = buf.st_size;
-
- uint8_t* memory = reinterpret_cast<uint8_t*>(mapped_memory_);
-
- art::DexFile::Header* header =
- reinterpret_cast<art::DexFile::Header*>(&memory[dex_file_offset_in_file]);
- if (!art::StandardDexFile::IsMagicValid(header->magic_) &&
- !art::CompactDexFile::IsMagicValid(header->magic_)) {
- return false;
- }
-
- if (__builtin_add_overflow(dex_file_offset_in_file, header->file_size_, &length) ||
- static_cast<uint64_t>(buf.st_size) < length) {
- return false;
- }
-
- art::DexFileLoader loader;
std::string error_msg;
- auto dex = loader.Open(&memory[dex_file_offset_in_file], header->file_size_, "", 0, nullptr,
- false, false, &error_msg);
- dex_file_.reset(dex.release());
- return dex_file_ != nullptr;
+ std::unique_ptr<art_api::dex::DexFile> art_dex_file =
+ OpenFromFd(fd, dex_file_offset_in_file, file, &error_msg);
+ if (art_dex_file == nullptr) {
+ return nullptr;
+ }
+
+ return std::unique_ptr<DexFileFromFile>(new DexFileFromFile(std::move(*art_dex_file.release())));
}
-bool DexFileFromMemory::Open(uint64_t dex_file_offset_in_memory, Memory* memory) {
- memory_.resize(sizeof(art::DexFile::Header));
- if (!memory->ReadFully(dex_file_offset_in_memory, memory_.data(), memory_.size())) {
- return false;
- }
+std::unique_ptr<DexFileFromMemory> DexFileFromMemory::Create(uint64_t dex_file_offset_in_memory,
+ Memory* memory,
+ const std::string& name) {
+ std::vector<uint8_t> backing_memory;
- art::DexFile::Header* header = reinterpret_cast<art::DexFile::Header*>(memory_.data());
- uint32_t file_size = header->file_size_;
- if (art::CompactDexFile::IsMagicValid(header->magic_)) {
- // Compact dex file store data section separately so that it can be shared.
- // Therefore we need to extend the read memory range to include it.
- // TODO: This might be wasteful as we might read data in between as well.
- // In practice, this should be fine, as such sharing only happens on disk.
- uint32_t computed_file_size;
- if (__builtin_add_overflow(header->data_off_, header->data_size_, &computed_file_size)) {
- return false;
+ for (size_t size = 0;;) {
+ std::string error_msg;
+ std::unique_ptr<art_api::dex::DexFile> art_dex_file =
+ OpenFromMemory(backing_memory.data(), &size, name, &error_msg);
+
+ if (art_dex_file != nullptr) {
+ return std::unique_ptr<DexFileFromMemory>(
+ new DexFileFromMemory(std::move(*art_dex_file.release()), std::move(backing_memory)));
}
- if (computed_file_size > file_size) {
- file_size = computed_file_size;
+
+ if (!error_msg.empty()) {
+ return nullptr;
}
- } else if (!art::StandardDexFile::IsMagicValid(header->magic_)) {
- return false;
+
+ backing_memory.resize(size);
+ if (!memory->ReadFully(dex_file_offset_in_memory, backing_memory.data(),
+ backing_memory.size())) {
+ return nullptr;
+ }
}
-
- memory_.resize(file_size);
- if (!memory->ReadFully(dex_file_offset_in_memory, memory_.data(), memory_.size())) {
- return false;
- }
-
- header = reinterpret_cast<art::DexFile::Header*>(memory_.data());
-
- art::DexFileLoader loader;
- std::string error_msg;
- auto dex =
- loader.Open(memory_.data(), header->file_size_, "", 0, nullptr, false, false, &error_msg);
- dex_file_.reset(dex.release());
- return dex_file_ != nullptr;
}
} // namespace unwindstack
diff --git a/libunwindstack/DexFile.h b/libunwindstack/DexFile.h
index c123158..5797dee 100644
--- a/libunwindstack/DexFile.h
+++ b/libunwindstack/DexFile.h
@@ -25,48 +25,41 @@
#include <utility>
#include <vector>
-#include <dex/dex_file-inl.h>
+#include <art_api/ext_dex_file.h>
namespace unwindstack {
-class DexFile {
+class DexFile : protected art_api::dex::DexFile {
public:
- DexFile() = default;
virtual ~DexFile() = default;
bool GetMethodInformation(uint64_t dex_offset, std::string* method_name, uint64_t* method_offset);
- static DexFile* Create(uint64_t dex_file_offset_in_memory, Memory* memory, MapInfo* info);
+ static std::unique_ptr<DexFile> Create(uint64_t dex_file_offset_in_memory, Memory* memory,
+ MapInfo* info);
protected:
- void Init();
-
- std::unique_ptr<const art::DexFile> dex_file_;
- std::map<uint32_t, std::pair<uint64_t, uint32_t>> method_cache_; // dex offset to method index.
-
- uint32_t class_def_index_ = 0;
+ DexFile(art_api::dex::DexFile&& art_dex_file) : art_api::dex::DexFile(std::move(art_dex_file)) {}
};
class DexFileFromFile : public DexFile {
public:
- DexFileFromFile() = default;
- virtual ~DexFileFromFile();
-
- bool Open(uint64_t dex_file_offset_in_file, const std::string& name);
+ static std::unique_ptr<DexFileFromFile> Create(uint64_t dex_file_offset_in_file,
+ const std::string& file);
private:
- void* mapped_memory_ = nullptr;
- size_t size_ = 0;
+ DexFileFromFile(art_api::dex::DexFile&& art_dex_file) : DexFile(std::move(art_dex_file)) {}
};
class DexFileFromMemory : public DexFile {
public:
- DexFileFromMemory() = default;
- virtual ~DexFileFromMemory() = default;
-
- bool Open(uint64_t dex_file_offset_in_memory, Memory* memory);
+ static std::unique_ptr<DexFileFromMemory> Create(uint64_t dex_file_offset_in_memory,
+ Memory* memory, const std::string& name);
private:
+ DexFileFromMemory(art_api::dex::DexFile&& art_dex_file, std::vector<uint8_t>&& memory)
+ : DexFile(std::move(art_dex_file)), memory_(std::move(memory)) {}
+
std::vector<uint8_t> memory_;
};
diff --git a/libunwindstack/DexFiles.cpp b/libunwindstack/DexFiles.cpp
index 451a0b9..63a77e5 100644
--- a/libunwindstack/DexFiles.cpp
+++ b/libunwindstack/DexFiles.cpp
@@ -48,11 +48,7 @@
DexFiles::DexFiles(std::shared_ptr<Memory>& memory, std::vector<std::string>& search_libs)
: Global(memory, search_libs) {}
-DexFiles::~DexFiles() {
- for (auto& entry : files_) {
- delete entry.second;
- }
-}
+DexFiles::~DexFiles() {}
void DexFiles::ProcessArch() {
switch (arch()) {
@@ -137,10 +133,11 @@
DexFile* dex_file;
auto entry = files_.find(dex_file_offset);
if (entry == files_.end()) {
- dex_file = DexFile::Create(dex_file_offset, memory_.get(), info);
- files_[dex_file_offset] = dex_file;
+ std::unique_ptr<DexFile> new_dex_file = DexFile::Create(dex_file_offset, memory_.get(), info);
+ dex_file = new_dex_file.get();
+ files_[dex_file_offset] = std::move(new_dex_file);
} else {
- dex_file = entry->second;
+ dex_file = entry->second.get();
}
return dex_file;
}
diff --git a/libunwindstack/DwarfCfa.cpp b/libunwindstack/DwarfCfa.cpp
index 0fa1638..4ba8a4b 100644
--- a/libunwindstack/DwarfCfa.cpp
+++ b/libunwindstack/DwarfCfa.cpp
@@ -260,7 +260,7 @@
}
// Log any of the expression data.
- for (const auto line : expression_lines) {
+ for (const auto& line : expression_lines) {
log(indent + 1, "%s", line.c_str());
}
return true;
diff --git a/libunwindstack/Elf.cpp b/libunwindstack/Elf.cpp
index 4d72ead..5b586a2 100644
--- a/libunwindstack/Elf.cpp
+++ b/libunwindstack/Elf.cpp
@@ -140,6 +140,10 @@
return true;
}
+bool Elf::GetBuildID(std::string* build_id) {
+ return valid_ && interface_->GetBuildID(build_id);
+}
+
void Elf::GetLastError(ErrorData* data) {
if (valid_) {
*data = interface_->last_error();
diff --git a/libunwindstack/ElfInterface.cpp b/libunwindstack/ElfInterface.cpp
index f59a472..d0af94a 100644
--- a/libunwindstack/ElfInterface.cpp
+++ b/libunwindstack/ElfInterface.cpp
@@ -237,6 +237,56 @@
}
}
+template <typename NhdrType>
+bool ElfInterface::ReadBuildID(std::string* build_id) {
+ // Ensure there is no overflow in any of the calulations below.
+ uint64_t tmp;
+ if (__builtin_add_overflow(gnu_build_id_offset_, gnu_build_id_size_, &tmp)) {
+ return false;
+ }
+
+ uint64_t offset = 0;
+ while (offset < gnu_build_id_size_) {
+ if (gnu_build_id_size_ - offset < sizeof(NhdrType)) {
+ return false;
+ }
+ NhdrType hdr;
+ if (!memory_->ReadFully(gnu_build_id_offset_ + offset, &hdr, sizeof(hdr))) {
+ return false;
+ }
+ offset += sizeof(hdr);
+
+ if (gnu_build_id_size_ - offset < hdr.n_namesz) {
+ return false;
+ }
+ if (hdr.n_namesz > 0) {
+ std::string name(hdr.n_namesz, '\0');
+ if (!memory_->ReadFully(gnu_build_id_offset_ + offset, &(name[0]), hdr.n_namesz)) {
+ return false;
+ }
+
+ // Trim trailing \0 as GNU is stored as a C string in the ELF file.
+ if (name.back() == '\0')
+ name.resize(name.size() - 1);
+
+ // Align hdr.n_namesz to next power multiple of 4. See man 5 elf.
+ offset += (hdr.n_namesz + 3) & ~3;
+
+ if (name == "GNU" && hdr.n_type == NT_GNU_BUILD_ID) {
+ if (gnu_build_id_size_ - offset < hdr.n_descsz) {
+ return false;
+ }
+ build_id->resize(hdr.n_descsz);
+ return memory_->ReadFully(gnu_build_id_offset_ + offset, &(*build_id)[0],
+ hdr.n_descsz);
+ }
+ }
+ // Align hdr.n_descsz to next power multiple of 4. See man 5 elf.
+ offset += (hdr.n_descsz + 3) & ~3;
+ }
+ return false;
+}
+
template <typename EhdrType, typename ShdrType>
void ElfInterface::ReadSectionHeaders(const EhdrType& ehdr) {
uint64_t offset = ehdr.e_shoff;
@@ -308,6 +358,15 @@
// In order to read soname, keep track of address to offset mapping.
strtabs_.push_back(std::make_pair<uint64_t, uint64_t>(static_cast<uint64_t>(shdr.sh_addr),
static_cast<uint64_t>(shdr.sh_offset)));
+ } else if (shdr.sh_type == SHT_NOTE) {
+ if (shdr.sh_name < sec_size) {
+ std::string name;
+ if (memory_->ReadString(sec_offset + shdr.sh_name, &name) &&
+ name == ".note.gnu.build-id") {
+ gnu_build_id_offset_ = shdr.sh_offset;
+ gnu_build_id_size_ = shdr.sh_size;
+ }
+ }
}
}
}
@@ -492,6 +551,9 @@
template void ElfInterface::ReadSectionHeaders<Elf32_Ehdr, Elf32_Shdr>(const Elf32_Ehdr&);
template void ElfInterface::ReadSectionHeaders<Elf64_Ehdr, Elf64_Shdr>(const Elf64_Ehdr&);
+template bool ElfInterface::ReadBuildID<Elf32_Nhdr>(std::string*);
+template bool ElfInterface::ReadBuildID<Elf64_Nhdr>(std::string*);
+
template bool ElfInterface::GetSonameWithTemplate<Elf32_Dyn>(std::string*);
template bool ElfInterface::GetSonameWithTemplate<Elf64_Dyn>(std::string*);
diff --git a/libunwindstack/Global.cpp b/libunwindstack/Global.cpp
index 7a3de01..fdfd705 100644
--- a/libunwindstack/Global.cpp
+++ b/libunwindstack/Global.cpp
@@ -15,6 +15,7 @@
*/
#include <stdint.h>
+#include <string.h>
#include <sys/mman.h>
#include <string>
diff --git a/libunwindstack/MapInfo.cpp b/libunwindstack/MapInfo.cpp
index e3b48ca..44ec5c1 100644
--- a/libunwindstack/MapInfo.cpp
+++ b/libunwindstack/MapInfo.cpp
@@ -29,6 +29,38 @@
namespace unwindstack {
+bool MapInfo::InitFileMemoryFromPreviousReadOnlyMap(MemoryFileAtOffset* memory) {
+ // One last attempt, see if the previous map is read-only with the
+ // same name and stretches across this map.
+ for (auto iter = maps_->begin(); iter != maps_->end(); ++iter) {
+ if (*iter == this) {
+ if (iter == maps_->begin()) {
+ return false;
+ }
+ --iter;
+ MapInfo* prev_map = *iter;
+ // Make sure this is a read-only map.
+ if (prev_map->flags != PROT_READ) {
+ return false;
+ }
+ uint64_t map_size = end - prev_map->end;
+ if (!memory->Init(name, prev_map->offset, map_size)) {
+ return false;
+ }
+ uint64_t max_size;
+ if (!Elf::GetInfo(memory, &max_size) || max_size < map_size) {
+ return false;
+ }
+ if (!memory->Init(name, prev_map->offset, max_size)) {
+ return false;
+ }
+ elf_offset = offset - prev_map->offset;
+ return true;
+ }
+ }
+ return false;
+}
+
Memory* MapInfo::GetFileMemory() {
std::unique_ptr<MemoryFileAtOffset> memory(new MemoryFileAtOffset);
if (offset == 0) {
@@ -38,8 +70,12 @@
return nullptr;
}
- // There are two possibilities when the offset is non-zero.
- // - There is an elf file embedded in a file.
+ // These are the possibilities when the offset is non-zero.
+ // - There is an elf file embedded in a file, and the offset is the
+ // the start of the elf in the file.
+ // - There is an elf file embedded in a file, and the offset is the
+ // the start of the executable part of the file. The actual start
+ // of the elf is in the read-only segment preceeding this map.
// - The whole file is an elf file, and the offset needs to be saved.
//
// Map in just the part of the file for the map. If this is not
@@ -53,27 +89,41 @@
return nullptr;
}
- uint64_t max_size;
- if (!Elf::GetInfo(memory.get(), &max_size)) {
- // Init as if the whole file is an elf.
- if (memory->Init(name, 0)) {
- elf_offset = offset;
- return memory.release();
+ // Check if the start of this map is an embedded elf.
+ uint64_t max_size = 0;
+ uint64_t file_offset = offset;
+ if (Elf::GetInfo(memory.get(), &max_size)) {
+ if (max_size > map_size) {
+ if (memory->Init(name, file_offset, max_size)) {
+ return memory.release();
+ }
+ // Try to reinit using the default map_size.
+ if (memory->Init(name, file_offset, map_size)) {
+ return memory.release();
+ }
+ return nullptr;
}
- return nullptr;
+ return memory.release();
}
- if (max_size > map_size) {
- if (memory->Init(name, offset, max_size)) {
- return memory.release();
- }
- // Try to reinit using the default map_size.
- if (memory->Init(name, offset, map_size)) {
- return memory.release();
- }
- return nullptr;
+ // No elf at offset, try to init as if the whole file is an elf.
+ if (memory->Init(name, 0) && Elf::IsValidElf(memory.get())) {
+ elf_offset = offset;
+ return memory.release();
}
- return memory.release();
+
+ // See if the map previous to this one contains a read-only map
+ // that represents the real start of the elf data.
+ if (InitFileMemoryFromPreviousReadOnlyMap(memory.get())) {
+ return memory.release();
+ }
+
+ // Failed to find elf at start of file or at read-only map, return
+ // file object from the current map.
+ if (memory->Init(name, offset, map_size)) {
+ return memory.release();
+ }
+ return nullptr;
}
Memory* MapInfo::CreateMemory(const std::shared_ptr<Memory>& process_memory) {
@@ -110,29 +160,27 @@
return nullptr;
}
- // Find the read-only map that has the same name and has an offset closest
- // to the current offset but less than the offset of the current map.
- // For shared libraries, there should be a r-x map that has a non-zero
- // offset and then a r-- map that has a zero offset.
- // For shared libraries loaded from an apk, there should be a r-x map that
- // has a non-zero offset and then a r-- map that has a non-zero offset less
- // than the offset from the r-x map.
- uint64_t closest_offset = 0;
+ // Find the read-only map by looking at the previous map. The linker
+ // doesn't guarantee that this invariant will always be true. However,
+ // if that changes, there is likely something else that will change and
+ // break something.
MapInfo* ro_map_info = nullptr;
- for (auto map_info : *maps_) {
- if (map_info->flags == PROT_READ && map_info->name == name && map_info->offset < offset &&
- map_info->offset >= closest_offset) {
- ro_map_info = map_info;
- closest_offset = ro_map_info->offset;
+ for (auto iter = maps_->begin(); iter != maps_->end(); ++iter) {
+ if (*iter == this) {
+ if (iter != maps_->begin()) {
+ --iter;
+ ro_map_info = *iter;
+ }
+ break;
}
}
- if (ro_map_info == nullptr) {
+ if (ro_map_info == nullptr || ro_map_info->name != name || ro_map_info->offset >= offset) {
return nullptr;
}
// Make sure that relative pc values are corrected properly.
- elf_offset = offset - closest_offset;
+ elf_offset = offset - ro_map_info->offset;
MemoryRanges* ranges = new MemoryRanges;
ranges->Insert(new MemoryRange(process_memory, ro_map_info->start,
diff --git a/libunwindstack/Maps.cpp b/libunwindstack/Maps.cpp
index 8729871..a9fb859 100644
--- a/libunwindstack/Maps.cpp
+++ b/libunwindstack/Maps.cpp
@@ -19,6 +19,7 @@
#include <inttypes.h>
#include <stdint.h>
#include <stdio.h>
+#include <string.h>
#include <sys/mman.h>
#include <sys/types.h>
#include <unistd.h>
diff --git a/libunwindstack/Memory.cpp b/libunwindstack/Memory.cpp
index a30d65e..9904fef 100644
--- a/libunwindstack/Memory.cpp
+++ b/libunwindstack/Memory.cpp
@@ -16,6 +16,7 @@
#include <errno.h>
#include <fcntl.h>
+#include <string.h>
#include <sys/mman.h>
#include <sys/ptrace.h>
#include <sys/stat.h>
diff --git a/libunwindstack/RegsArm.cpp b/libunwindstack/RegsArm.cpp
index de22bde..885dc94 100644
--- a/libunwindstack/RegsArm.cpp
+++ b/libunwindstack/RegsArm.cpp
@@ -15,6 +15,7 @@
*/
#include <stdint.h>
+#include <string.h>
#include <functional>
diff --git a/libunwindstack/RegsArm64.cpp b/libunwindstack/RegsArm64.cpp
index a68f6e0..e9787aa 100644
--- a/libunwindstack/RegsArm64.cpp
+++ b/libunwindstack/RegsArm64.cpp
@@ -15,6 +15,7 @@
*/
#include <stdint.h>
+#include <string.h>
#include <functional>
diff --git a/libunwindstack/RegsMips.cpp b/libunwindstack/RegsMips.cpp
index 2e6908c..14a4e31 100644
--- a/libunwindstack/RegsMips.cpp
+++ b/libunwindstack/RegsMips.cpp
@@ -15,6 +15,7 @@
*/
#include <stdint.h>
+#include <string.h>
#include <functional>
diff --git a/libunwindstack/RegsMips64.cpp b/libunwindstack/RegsMips64.cpp
index 0b835a1..3f67d92 100644
--- a/libunwindstack/RegsMips64.cpp
+++ b/libunwindstack/RegsMips64.cpp
@@ -15,6 +15,7 @@
*/
#include <stdint.h>
+#include <string.h>
#include <functional>
diff --git a/libunwindstack/RegsX86_64.cpp b/libunwindstack/RegsX86_64.cpp
index ebad3f4..74cd1cb 100644
--- a/libunwindstack/RegsX86_64.cpp
+++ b/libunwindstack/RegsX86_64.cpp
@@ -15,6 +15,7 @@
*/
#include <stdint.h>
+#include <string.h>
#include <functional>
diff --git a/libunwindstack/Symbols.cpp b/libunwindstack/Symbols.cpp
index 14ebdbb..e3c15a2 100644
--- a/libunwindstack/Symbols.cpp
+++ b/libunwindstack/Symbols.cpp
@@ -17,6 +17,7 @@
#include <elf.h>
#include <stdint.h>
+#include <algorithm>
#include <string>
#include <unwindstack/Memory.h>
diff --git a/libunwindstack/Unwinder.cpp b/libunwindstack/Unwinder.cpp
index b3c5549..792cd0b 100644
--- a/libunwindstack/Unwinder.cpp
+++ b/libunwindstack/Unwinder.cpp
@@ -239,8 +239,14 @@
if (!stepped) {
if (return_address_attempt) {
- // Remove the speculative frame.
- frames_.pop_back();
+ // Only remove the speculative frame if there are more than two frames
+ // or the pc in the first frame is in a valid map.
+ // This allows for a case where the code jumps into the middle of
+ // nowhere, but there is no other unwind information after that.
+ if (frames_.size() != 2 || maps_->Find(frames_[0].pc) != nullptr) {
+ // Remove the speculative frame.
+ frames_.pop_back();
+ }
break;
} else if (in_device_map) {
// Do not attempt any other unwinding, pc or sp is in a device
diff --git a/libunwindstack/include/unwindstack/DexFiles.h b/libunwindstack/include/unwindstack/DexFiles.h
index c202a33..0336173 100644
--- a/libunwindstack/include/unwindstack/DexFiles.h
+++ b/libunwindstack/include/unwindstack/DexFiles.h
@@ -66,7 +66,7 @@
std::mutex lock_;
bool initialized_ = false;
- std::unordered_map<uint64_t, DexFile*> files_;
+ std::unordered_map<uint64_t, std::unique_ptr<DexFile>> files_;
uint64_t entry_addr_ = 0;
uint64_t (DexFiles::*read_entry_ptr_func_)(uint64_t) = nullptr;
diff --git a/libunwindstack/include/unwindstack/Elf.h b/libunwindstack/include/unwindstack/Elf.h
index e5b0a89..27f7201 100644
--- a/libunwindstack/include/unwindstack/Elf.h
+++ b/libunwindstack/include/unwindstack/Elf.h
@@ -65,6 +65,8 @@
bool GetGlobalVariable(const std::string& name, uint64_t* memory_address);
+ bool GetBuildID(std::string* build_id);
+
uint64_t GetRelPc(uint64_t pc, const MapInfo* map_info);
bool Step(uint64_t rel_pc, uint64_t adjusted_rel_pc, Regs* regs, Memory* process_memory,
diff --git a/libunwindstack/include/unwindstack/ElfInterface.h b/libunwindstack/include/unwindstack/ElfInterface.h
index a45eba8..52992d9 100644
--- a/libunwindstack/include/unwindstack/ElfInterface.h
+++ b/libunwindstack/include/unwindstack/ElfInterface.h
@@ -62,6 +62,8 @@
virtual bool GetGlobalVariable(const std::string& name, uint64_t* memory_address) = 0;
+ virtual bool GetBuildID(std::string* build_id) = 0;
+
virtual bool Step(uint64_t rel_pc, Regs* regs, Memory* process_memory, bool* finished);
virtual bool IsValidPc(uint64_t pc);
@@ -85,6 +87,8 @@
uint64_t debug_frame_size() { return debug_frame_size_; }
uint64_t gnu_debugdata_offset() { return gnu_debugdata_offset_; }
uint64_t gnu_debugdata_size() { return gnu_debugdata_size_; }
+ uint64_t gnu_build_id_offset() { return gnu_build_id_offset_; }
+ uint64_t gnu_build_id_size() { return gnu_build_id_size_; }
DwarfSection* eh_frame() { return eh_frame_.get(); }
DwarfSection* debug_frame() { return debug_frame_.get(); }
@@ -123,6 +127,9 @@
template <typename EhdrType>
static void GetMaxSizeWithTemplate(Memory* memory, uint64_t* size);
+ template <typename NhdrType>
+ bool ReadBuildID(std::string* build_id);
+
Memory* memory_;
std::unordered_map<uint64_t, LoadInfo> pt_loads_;
@@ -143,6 +150,9 @@
uint64_t gnu_debugdata_offset_ = 0;
uint64_t gnu_debugdata_size_ = 0;
+ uint64_t gnu_build_id_offset_ = 0;
+ uint64_t gnu_build_id_size_ = 0;
+
uint8_t soname_type_ = SONAME_UNKNOWN;
std::string soname_;
@@ -182,6 +192,10 @@
return ElfInterface::GetGlobalVariableWithTemplate<Elf32_Sym>(name, memory_address);
}
+ bool GetBuildID(std::string* build_id) {
+ return ElfInterface::ReadBuildID<Elf32_Nhdr>(build_id);
+ }
+
static void GetMaxSize(Memory* memory, uint64_t* size) {
GetMaxSizeWithTemplate<Elf32_Ehdr>(memory, size);
}
@@ -212,6 +226,10 @@
return ElfInterface::GetGlobalVariableWithTemplate<Elf64_Sym>(name, memory_address);
}
+ bool GetBuildID(std::string* build_id) {
+ return ElfInterface::ReadBuildID<Elf64_Nhdr>(build_id);
+ }
+
static void GetMaxSize(Memory* memory, uint64_t* size) {
GetMaxSizeWithTemplate<Elf64_Ehdr>(memory, size);
}
diff --git a/libunwindstack/include/unwindstack/MapInfo.h b/libunwindstack/include/unwindstack/MapInfo.h
index 9c6b552..cfdefd0 100644
--- a/libunwindstack/include/unwindstack/MapInfo.h
+++ b/libunwindstack/include/unwindstack/MapInfo.h
@@ -83,6 +83,7 @@
void operator=(const MapInfo&) = delete;
Memory* GetFileMemory();
+ bool InitFileMemoryFromPreviousReadOnlyMap(MemoryFileAtOffset* memory);
// Protect the creation of the elf object.
std::mutex mutex_;
diff --git a/libunwindstack/tests/DexFileTest.cpp b/libunwindstack/tests/DexFileTest.cpp
index 95d2176..21ca47b 100644
--- a/libunwindstack/tests/DexFileTest.cpp
+++ b/libunwindstack/tests/DexFileTest.cpp
@@ -21,44 +21,37 @@
#include <unordered_map>
#include <android-base/file.h>
-
+#include <dex/dex_file.h>
+#include <gtest/gtest.h>
#include <unwindstack/MapInfo.h>
#include <unwindstack/Memory.h>
-#include <dex/code_item_accessors-inl.h>
-#include <dex/standard_dex_file.h>
-
-#include <gtest/gtest.h>
-
#include "DexFile.h"
-
#include "DexFileData.h"
#include "MemoryFake.h"
namespace unwindstack {
TEST(DexFileTest, from_file_open_non_exist) {
- DexFileFromFile dex_file;
- ASSERT_FALSE(dex_file.Open(0, "/file/does/not/exist"));
+ EXPECT_TRUE(DexFileFromFile::Create(0, "/file/does/not/exist") == nullptr);
}
TEST(DexFileTest, from_file_open_too_small) {
TemporaryFile tf;
ASSERT_TRUE(tf.fd != -1);
- ASSERT_EQ(sizeof(art::DexFile::Header) - 2,
+ ASSERT_EQ(sizeof(art::DexFile::Header) - 1,
static_cast<size_t>(
- TEMP_FAILURE_RETRY(write(tf.fd, kDexData, sizeof(art::DexFile::Header)) - 2)));
+ TEMP_FAILURE_RETRY(write(tf.fd, kDexData, sizeof(art::DexFile::Header) - 1))));
// Header too small.
- DexFileFromFile dex_file;
- ASSERT_FALSE(dex_file.Open(0, tf.path));
+ EXPECT_TRUE(DexFileFromFile::Create(0, tf.path) == nullptr);
// Header correct, file too small.
ASSERT_EQ(0, lseek(tf.fd, 0, SEEK_SET));
ASSERT_EQ(sizeof(art::DexFile::Header), static_cast<size_t>(TEMP_FAILURE_RETRY(write(
tf.fd, kDexData, sizeof(art::DexFile::Header)))));
- ASSERT_FALSE(dex_file.Open(0, tf.path));
+ EXPECT_TRUE(DexFileFromFile::Create(0, tf.path) == nullptr);
}
TEST(DexFileTest, from_file_open) {
@@ -68,8 +61,7 @@
ASSERT_EQ(sizeof(kDexData),
static_cast<size_t>(TEMP_FAILURE_RETRY(write(tf.fd, kDexData, sizeof(kDexData)))));
- DexFileFromFile dex_file;
- ASSERT_TRUE(dex_file.Open(0, tf.path));
+ EXPECT_TRUE(DexFileFromFile::Create(0, tf.path) != nullptr);
}
TEST(DexFileTest, from_file_open_non_zero_offset) {
@@ -80,35 +72,31 @@
ASSERT_EQ(sizeof(kDexData),
static_cast<size_t>(TEMP_FAILURE_RETRY(write(tf.fd, kDexData, sizeof(kDexData)))));
- DexFileFromFile dex_file;
- ASSERT_TRUE(dex_file.Open(0x100, tf.path));
+ EXPECT_TRUE(DexFileFromFile::Create(0x100, tf.path) != nullptr);
}
TEST(DexFileTest, from_memory_fail_too_small_for_header) {
MemoryFake memory;
memory.SetMemory(0x1000, kDexData, sizeof(art::DexFile::Header) - 1);
- DexFileFromMemory dex_file;
- ASSERT_FALSE(dex_file.Open(0x1000, &memory));
+ EXPECT_TRUE(DexFileFromMemory::Create(0x1000, &memory, "") == nullptr);
}
TEST(DexFileTest, from_memory_fail_too_small_for_data) {
MemoryFake memory;
memory.SetMemory(0x1000, kDexData, sizeof(kDexData) - 2);
- DexFileFromMemory dex_file;
- ASSERT_FALSE(dex_file.Open(0x1000, &memory));
+ EXPECT_TRUE(DexFileFromMemory::Create(0x1000, &memory, "") == nullptr);
}
TEST(DexFileTest, from_memory_open) {
MemoryFake memory;
memory.SetMemory(0x1000, kDexData, sizeof(kDexData));
- DexFileFromMemory dex_file;
- ASSERT_TRUE(dex_file.Open(0x1000, &memory));
+ EXPECT_TRUE(DexFileFromMemory::Create(0x1000, &memory, "") != nullptr);
}
TEST(DexFileTest, create_using_file) {
@@ -121,8 +109,7 @@
MemoryFake memory;
MapInfo info(nullptr, 0, 0x10000, 0, 0x5, tf.path);
- std::unique_ptr<DexFile> dex_file(DexFile::Create(0x500, &memory, &info));
- ASSERT_TRUE(dex_file != nullptr);
+ EXPECT_TRUE(DexFile::Create(0x500, &memory, &info) != nullptr);
}
TEST(DexFileTest, create_using_file_non_zero_start) {
@@ -135,8 +122,7 @@
MemoryFake memory;
MapInfo info(nullptr, 0x100, 0x10000, 0, 0x5, tf.path);
- std::unique_ptr<DexFile> dex_file(DexFile::Create(0x600, &memory, &info));
- ASSERT_TRUE(dex_file != nullptr);
+ EXPECT_TRUE(DexFile::Create(0x600, &memory, &info) != nullptr);
}
TEST(DexFileTest, create_using_file_non_zero_offset) {
@@ -149,24 +135,21 @@
MemoryFake memory;
MapInfo info(nullptr, 0x100, 0x10000, 0x200, 0x5, tf.path);
- std::unique_ptr<DexFile> dex_file(DexFile::Create(0x400, &memory, &info));
- ASSERT_TRUE(dex_file != nullptr);
+ EXPECT_TRUE(DexFile::Create(0x400, &memory, &info) != nullptr);
}
TEST(DexFileTest, create_using_memory_empty_file) {
MemoryFake memory;
memory.SetMemory(0x4000, kDexData, sizeof(kDexData));
MapInfo info(nullptr, 0x100, 0x10000, 0x200, 0x5, "");
- std::unique_ptr<DexFile> dex_file(DexFile::Create(0x4000, &memory, &info));
- ASSERT_TRUE(dex_file != nullptr);
+ EXPECT_TRUE(DexFile::Create(0x4000, &memory, &info) != nullptr);
}
TEST(DexFileTest, create_using_memory_file_does_not_exist) {
MemoryFake memory;
memory.SetMemory(0x4000, kDexData, sizeof(kDexData));
MapInfo info(nullptr, 0x100, 0x10000, 0x200, 0x5, "/does/not/exist");
- std::unique_ptr<DexFile> dex_file(DexFile::Create(0x4000, &memory, &info));
- ASSERT_TRUE(dex_file != nullptr);
+ EXPECT_TRUE(DexFile::Create(0x4000, &memory, &info) != nullptr);
}
TEST(DexFileTest, create_using_memory_file_is_malformed) {
@@ -179,22 +162,13 @@
MemoryFake memory;
memory.SetMemory(0x4000, kDexData, sizeof(kDexData));
MapInfo info(nullptr, 0x4000, 0x10000, 0x200, 0x5, "/does/not/exist");
- std::unique_ptr<DexFile> dex_file(DexFile::Create(0x4000, &memory, &info));
+ std::unique_ptr<DexFile> dex_file = DexFile::Create(0x4000, &memory, &info);
ASSERT_TRUE(dex_file != nullptr);
// Check it came from memory by clearing memory and verifying it fails.
memory.Clear();
- dex_file.reset(DexFile::Create(0x4000, &memory, &info));
- ASSERT_TRUE(dex_file == nullptr);
-}
-
-TEST(DexFileTest, get_method_not_opened) {
- std::string method("something");
- uint64_t method_offset = 100;
- DexFile dex_file;
- dex_file.GetMethodInformation(0x100, &method, &method_offset);
- EXPECT_EQ("something", method);
- EXPECT_EQ(100U, method_offset);
+ dex_file = DexFile::Create(0x4000, &memory, &info);
+ EXPECT_TRUE(dex_file == nullptr);
}
TEST(DexFileTest, get_method) {
diff --git a/libunwindstack/tests/ElfFake.h b/libunwindstack/tests/ElfFake.h
index a3bf5ce..c2bd0f6 100644
--- a/libunwindstack/tests/ElfFake.h
+++ b/libunwindstack/tests/ElfFake.h
@@ -72,6 +72,9 @@
bool GetFunctionName(uint64_t, std::string*, uint64_t*) override;
bool GetGlobalVariable(const std::string&, uint64_t*) override;
+ bool GetBuildID(std::string*) override {
+ return false;
+ }
bool Step(uint64_t, Regs*, Memory*, bool*) override;
diff --git a/libunwindstack/tests/ElfInterfaceTest.cpp b/libunwindstack/tests/ElfInterfaceTest.cpp
index 9326bff..6023dc4 100644
--- a/libunwindstack/tests/ElfInterfaceTest.cpp
+++ b/libunwindstack/tests/ElfInterfaceTest.cpp
@@ -116,6 +116,21 @@
void InitSym(uint64_t offset, uint32_t value, uint32_t size, uint32_t name_offset,
uint64_t sym_offset, const char* name);
+ template <typename Ehdr, typename Shdr, typename Nhdr, typename ElfInterfaceType>
+ void BuildID();
+
+ template <typename Ehdr, typename Shdr, typename Nhdr, typename ElfInterfaceType>
+ void BuildIDTwoNotes();
+
+ template <typename Ehdr, typename Shdr, typename Nhdr, typename ElfInterfaceType>
+ void BuildIDSectionTooSmallForName();
+
+ template <typename Ehdr, typename Shdr, typename Nhdr, typename ElfInterfaceType>
+ void BuildIDSectionTooSmallForDesc();
+
+ template <typename Ehdr, typename Shdr, typename Nhdr, typename ElfInterfaceType>
+ void BuildIDSectionTooSmallForHeader();
+
MemoryFake memory_;
};
@@ -898,7 +913,7 @@
Ehdr ehdr = {};
ehdr.e_shoff = offset;
- ehdr.e_shnum = 6;
+ ehdr.e_shnum = 7;
ehdr.e_shentsize = sizeof(Shdr);
ehdr.e_shstrndx = 2;
memory_.SetMemory(0, &ehdr, sizeof(ehdr));
@@ -958,10 +973,19 @@
memory_.SetMemory(offset, &shdr, sizeof(shdr));
offset += ehdr.e_shentsize;
+ memset(&shdr, 0, sizeof(shdr));
+ shdr.sh_type = SHT_NOTE;
+ shdr.sh_name = 0x500;
+ shdr.sh_offset = 0xb000;
+ shdr.sh_size = 0xf00;
+ memory_.SetMemory(offset, &shdr, sizeof(shdr));
+ offset += ehdr.e_shentsize;
+
memory_.SetMemory(0xf100, ".debug_frame", sizeof(".debug_frame"));
memory_.SetMemory(0xf200, ".gnu_debugdata", sizeof(".gnu_debugdata"));
memory_.SetMemory(0xf300, ".eh_frame", sizeof(".eh_frame"));
memory_.SetMemory(0xf400, ".eh_frame_hdr", sizeof(".eh_frame_hdr"));
+ memory_.SetMemory(0xf500, ".note.gnu.build-id", sizeof(".note.gnu.build-id"));
uint64_t load_bias = 0;
ASSERT_TRUE(elf->Init(&load_bias));
@@ -974,6 +998,8 @@
EXPECT_EQ(0x800U, elf->eh_frame_size());
EXPECT_EQ(0xa000U, elf->eh_frame_hdr_offset());
EXPECT_EQ(0xf00U, elf->eh_frame_hdr_size());
+ EXPECT_EQ(0xb000U, elf->gnu_build_id_offset());
+ EXPECT_EQ(0xf00U, elf->gnu_build_id_size());
}
TEST_F(ElfInterfaceTest, init_section_headers_offsets32) {
@@ -1153,4 +1179,321 @@
EXPECT_FALSE(elf->IsValidPc(0x2a00));
}
+template <typename Ehdr, typename Shdr, typename Nhdr, typename ElfInterfaceType>
+void ElfInterfaceTest::BuildID() {
+ std::unique_ptr<ElfInterfaceType> elf(new ElfInterfaceType(&memory_));
+
+ uint64_t offset = 0x2000;
+
+ Ehdr ehdr = {};
+ ehdr.e_shoff = offset;
+ ehdr.e_shnum = 3;
+ ehdr.e_shentsize = sizeof(Shdr);
+ ehdr.e_shstrndx = 2;
+ memory_.SetMemory(0, &ehdr, sizeof(ehdr));
+
+ offset += ehdr.e_shentsize;
+
+ char note_section[128];
+ Nhdr note_header = {};
+ note_header.n_namesz = 4; // "GNU"
+ note_header.n_descsz = 8; // "BUILDID"
+ note_header.n_type = NT_GNU_BUILD_ID;
+ memcpy(¬e_section, ¬e_header, sizeof(note_header));
+ size_t note_offset = sizeof(note_header);
+ memcpy(¬e_section[note_offset], "GNU", sizeof("GNU"));
+ note_offset += sizeof("GNU");
+ memcpy(¬e_section[note_offset], "BUILDID", sizeof("BUILDID"));
+ note_offset += sizeof("BUILDID");
+
+ Shdr shdr = {};
+ shdr.sh_type = SHT_NOTE;
+ shdr.sh_name = 0x500;
+ shdr.sh_offset = 0xb000;
+ shdr.sh_size = sizeof(note_section);
+ memory_.SetMemory(offset, &shdr, sizeof(shdr));
+ offset += ehdr.e_shentsize;
+
+ // The string data for section header names.
+ memset(&shdr, 0, sizeof(shdr));
+ shdr.sh_type = SHT_STRTAB;
+ shdr.sh_name = 0x20000;
+ shdr.sh_offset = 0xf000;
+ shdr.sh_size = 0x1000;
+ memory_.SetMemory(offset, &shdr, sizeof(shdr));
+ offset += ehdr.e_shentsize;
+
+ memory_.SetMemory(0xf500, ".note.gnu.build-id", sizeof(".note.gnu.build-id"));
+ memory_.SetMemory(0xb000, note_section, sizeof(note_section));
+
+ uint64_t load_bias = 0;
+ ASSERT_TRUE(elf->Init(&load_bias));
+ std::string build_id;
+ ASSERT_TRUE(elf->GetBuildID(&build_id));
+ EXPECT_STREQ(build_id.c_str(), "BUILDID");
+}
+
+template <typename Ehdr, typename Shdr, typename Nhdr, typename ElfInterfaceType>
+void ElfInterfaceTest::BuildIDTwoNotes() {
+ std::unique_ptr<ElfInterfaceType> elf(new ElfInterfaceType(&memory_));
+
+ uint64_t offset = 0x2000;
+
+ Ehdr ehdr = {};
+ ehdr.e_shoff = offset;
+ ehdr.e_shnum = 3;
+ ehdr.e_shentsize = sizeof(Shdr);
+ ehdr.e_shstrndx = 2;
+ memory_.SetMemory(0, &ehdr, sizeof(ehdr));
+
+ offset += ehdr.e_shentsize;
+
+ char note_section[128];
+ Nhdr note_header = {};
+ note_header.n_namesz = 8; // "WRONG" aligned to 4
+ note_header.n_descsz = 8; // "BUILDID"
+ note_header.n_type = NT_GNU_BUILD_ID;
+ memcpy(¬e_section, ¬e_header, sizeof(note_header));
+ size_t note_offset = sizeof(note_header);
+ memcpy(¬e_section[note_offset], "WRONG", sizeof("WRONG"));
+ note_offset += 8;
+ memcpy(¬e_section[note_offset], "BUILDID", sizeof("BUILDID"));
+ note_offset += sizeof("BUILDID");
+
+ note_header.n_namesz = 4; // "GNU"
+ note_header.n_descsz = 8; // "BUILDID"
+ note_header.n_type = NT_GNU_BUILD_ID;
+ memcpy(¬e_section[note_offset], ¬e_header, sizeof(note_header));
+ note_offset += sizeof(note_header);
+ memcpy(¬e_section[note_offset], "GNU", sizeof("GNU"));
+ note_offset += sizeof("GNU");
+ memcpy(¬e_section[note_offset], "BUILDID", sizeof("BUILDID"));
+ note_offset += sizeof("BUILDID");
+
+ Shdr shdr = {};
+ shdr.sh_type = SHT_NOTE;
+ shdr.sh_name = 0x500;
+ shdr.sh_offset = 0xb000;
+ shdr.sh_size = sizeof(note_section);
+ memory_.SetMemory(offset, &shdr, sizeof(shdr));
+ offset += ehdr.e_shentsize;
+
+ // The string data for section header names.
+ memset(&shdr, 0, sizeof(shdr));
+ shdr.sh_type = SHT_STRTAB;
+ shdr.sh_name = 0x20000;
+ shdr.sh_offset = 0xf000;
+ shdr.sh_size = 0x1000;
+ memory_.SetMemory(offset, &shdr, sizeof(shdr));
+ offset += ehdr.e_shentsize;
+
+ memory_.SetMemory(0xf500, ".note.gnu.build-id", sizeof(".note.gnu.build-id"));
+ memory_.SetMemory(0xb000, note_section, sizeof(note_section));
+
+ uint64_t load_bias = 0;
+ ASSERT_TRUE(elf->Init(&load_bias));
+ std::string build_id;
+ ASSERT_TRUE(elf->GetBuildID(&build_id));
+ EXPECT_STREQ(build_id.c_str(), "BUILDID");
+}
+
+template <typename Ehdr, typename Shdr, typename Nhdr, typename ElfInterfaceType>
+void ElfInterfaceTest::BuildIDSectionTooSmallForName () {
+ std::unique_ptr<ElfInterfaceType> elf(new ElfInterfaceType(&memory_));
+
+ uint64_t offset = 0x2000;
+
+ Ehdr ehdr = {};
+ ehdr.e_shoff = offset;
+ ehdr.e_shnum = 3;
+ ehdr.e_shentsize = sizeof(Shdr);
+ ehdr.e_shstrndx = 2;
+ memory_.SetMemory(0, &ehdr, sizeof(ehdr));
+
+ offset += ehdr.e_shentsize;
+
+ char note_section[128];
+ Nhdr note_header = {};
+ note_header.n_namesz = 4; // "GNU"
+ note_header.n_descsz = 8; // "BUILDID"
+ note_header.n_type = NT_GNU_BUILD_ID;
+ memcpy(¬e_section, ¬e_header, sizeof(note_header));
+ size_t note_offset = sizeof(note_header);
+ memcpy(¬e_section[note_offset], "GNU", sizeof("GNU"));
+ note_offset += sizeof("GNU");
+ memcpy(¬e_section[note_offset], "BUILDID", sizeof("BUILDID"));
+ note_offset += sizeof("BUILDID");
+
+ Shdr shdr = {};
+ shdr.sh_type = SHT_NOTE;
+ shdr.sh_name = 0x500;
+ shdr.sh_offset = 0xb000;
+ shdr.sh_size = sizeof(note_header) + 1;
+ memory_.SetMemory(offset, &shdr, sizeof(shdr));
+ offset += ehdr.e_shentsize;
+
+ // The string data for section header names.
+ memset(&shdr, 0, sizeof(shdr));
+ shdr.sh_type = SHT_STRTAB;
+ shdr.sh_name = 0x20000;
+ shdr.sh_offset = 0xf000;
+ shdr.sh_size = 0x1000;
+ memory_.SetMemory(offset, &shdr, sizeof(shdr));
+ offset += ehdr.e_shentsize;
+
+ memory_.SetMemory(0xf500, ".note.gnu.build-id", sizeof(".note.gnu.build-id"));
+ memory_.SetMemory(0xb000, note_section, sizeof(note_section));
+
+ uint64_t load_bias = 0;
+ ASSERT_TRUE(elf->Init(&load_bias));
+ std::string build_id;
+ ASSERT_FALSE(elf->GetBuildID(&build_id));
+}
+
+template <typename Ehdr, typename Shdr, typename Nhdr, typename ElfInterfaceType>
+void ElfInterfaceTest::BuildIDSectionTooSmallForDesc () {
+ std::unique_ptr<ElfInterfaceType> elf(new ElfInterfaceType(&memory_));
+
+ uint64_t offset = 0x2000;
+
+ Ehdr ehdr = {};
+ ehdr.e_shoff = offset;
+ ehdr.e_shnum = 3;
+ ehdr.e_shentsize = sizeof(Shdr);
+ ehdr.e_shstrndx = 2;
+ memory_.SetMemory(0, &ehdr, sizeof(ehdr));
+
+ offset += ehdr.e_shentsize;
+
+ char note_section[128];
+ Nhdr note_header = {};
+ note_header.n_namesz = 4; // "GNU"
+ note_header.n_descsz = 8; // "BUILDID"
+ note_header.n_type = NT_GNU_BUILD_ID;
+ memcpy(¬e_section, ¬e_header, sizeof(note_header));
+ size_t note_offset = sizeof(note_header);
+ memcpy(¬e_section[note_offset], "GNU", sizeof("GNU"));
+ note_offset += sizeof("GNU");
+ memcpy(¬e_section[note_offset], "BUILDID", sizeof("BUILDID"));
+ note_offset += sizeof("BUILDID");
+
+ Shdr shdr = {};
+ shdr.sh_type = SHT_NOTE;
+ shdr.sh_name = 0x500;
+ shdr.sh_offset = 0xb000;
+ shdr.sh_size = sizeof(note_header) + sizeof("GNU") + 1;
+ memory_.SetMemory(offset, &shdr, sizeof(shdr));
+ offset += ehdr.e_shentsize;
+
+ // The string data for section header names.
+ memset(&shdr, 0, sizeof(shdr));
+ shdr.sh_type = SHT_STRTAB;
+ shdr.sh_name = 0x20000;
+ shdr.sh_offset = 0xf000;
+ shdr.sh_size = 0x1000;
+ memory_.SetMemory(offset, &shdr, sizeof(shdr));
+ offset += ehdr.e_shentsize;
+
+ memory_.SetMemory(0xf500, ".note.gnu.build-id", sizeof(".note.gnu.build-id"));
+ memory_.SetMemory(0xb000, note_section, sizeof(note_section));
+
+ uint64_t load_bias = 0;
+ ASSERT_TRUE(elf->Init(&load_bias));
+ std::string build_id;
+ ASSERT_FALSE(elf->GetBuildID(&build_id));
+}
+
+template <typename Ehdr, typename Shdr, typename Nhdr, typename ElfInterfaceType>
+void ElfInterfaceTest::BuildIDSectionTooSmallForHeader () {
+ std::unique_ptr<ElfInterfaceType> elf(new ElfInterfaceType(&memory_));
+
+ uint64_t offset = 0x2000;
+
+ Ehdr ehdr = {};
+ ehdr.e_shoff = offset;
+ ehdr.e_shnum = 3;
+ ehdr.e_shentsize = sizeof(Shdr);
+ ehdr.e_shstrndx = 2;
+ memory_.SetMemory(0, &ehdr, sizeof(ehdr));
+
+ offset += ehdr.e_shentsize;
+
+ char note_section[128];
+ Nhdr note_header = {};
+ note_header.n_namesz = 4; // "GNU"
+ note_header.n_descsz = 8; // "BUILDID"
+ note_header.n_type = NT_GNU_BUILD_ID;
+ memcpy(¬e_section, ¬e_header, sizeof(note_header));
+ size_t note_offset = sizeof(note_header);
+ memcpy(¬e_section[note_offset], "GNU", sizeof("GNU"));
+ note_offset += sizeof("GNU");
+ memcpy(¬e_section[note_offset], "BUILDID", sizeof("BUILDID"));
+ note_offset += sizeof("BUILDID");
+
+ Shdr shdr = {};
+ shdr.sh_type = SHT_NOTE;
+ shdr.sh_name = 0x500;
+ shdr.sh_offset = 0xb000;
+ shdr.sh_size = sizeof(note_header) - 1;
+ memory_.SetMemory(offset, &shdr, sizeof(shdr));
+ offset += ehdr.e_shentsize;
+
+ // The string data for section header names.
+ memset(&shdr, 0, sizeof(shdr));
+ shdr.sh_type = SHT_STRTAB;
+ shdr.sh_name = 0x20000;
+ shdr.sh_offset = 0xf000;
+ shdr.sh_size = 0x1000;
+ memory_.SetMemory(offset, &shdr, sizeof(shdr));
+ offset += ehdr.e_shentsize;
+
+ memory_.SetMemory(0xf500, ".note.gnu.build-id", sizeof(".note.gnu.build-id"));
+ memory_.SetMemory(0xb000, note_section, sizeof(note_section));
+
+ uint64_t load_bias = 0;
+ ASSERT_TRUE(elf->Init(&load_bias));
+ std::string build_id;
+ ASSERT_FALSE(elf->GetBuildID(&build_id));
+}
+
+TEST_F(ElfInterfaceTest, build_id32) {
+ BuildID<Elf32_Ehdr, Elf32_Shdr, Elf32_Nhdr, ElfInterface32>();
+}
+
+TEST_F(ElfInterfaceTest, build_id64) {
+ BuildID<Elf64_Ehdr, Elf64_Shdr, Elf64_Nhdr, ElfInterface64>();
+}
+
+TEST_F(ElfInterfaceTest, build_id_two_notes32) {
+ BuildIDTwoNotes<Elf32_Ehdr, Elf32_Shdr, Elf32_Nhdr, ElfInterface32>();
+}
+
+TEST_F(ElfInterfaceTest, build_id_two_notes64) {
+ BuildIDTwoNotes<Elf64_Ehdr, Elf64_Shdr, Elf64_Nhdr, ElfInterface64>();
+}
+
+TEST_F(ElfInterfaceTest, build_id_section_too_small_for_name32) {
+ BuildIDSectionTooSmallForName<Elf32_Ehdr, Elf32_Shdr, Elf32_Nhdr, ElfInterface32>();
+}
+
+TEST_F(ElfInterfaceTest, build_id_section_too_small_for_name64) {
+ BuildIDSectionTooSmallForName<Elf64_Ehdr, Elf64_Shdr, Elf64_Nhdr, ElfInterface64>();
+}
+
+TEST_F(ElfInterfaceTest, build_id_section_too_small_for_desc32) {
+ BuildIDSectionTooSmallForDesc<Elf32_Ehdr, Elf32_Shdr, Elf32_Nhdr, ElfInterface32>();
+}
+
+TEST_F(ElfInterfaceTest, build_id_section_too_small_for_desc64) {
+ BuildIDSectionTooSmallForDesc<Elf64_Ehdr, Elf64_Shdr, Elf64_Nhdr, ElfInterface64>();
+}
+
+TEST_F(ElfInterfaceTest, build_id_section_too_small_for_header32) {
+ BuildIDSectionTooSmallForHeader<Elf32_Ehdr, Elf32_Shdr, Elf32_Nhdr, ElfInterface32>();
+}
+
+TEST_F(ElfInterfaceTest, build_id_section_too_small_for_header64) {
+ BuildIDSectionTooSmallForHeader<Elf64_Ehdr, Elf64_Shdr, Elf64_Nhdr, ElfInterface64>();
+}
+
} // namespace unwindstack
diff --git a/libunwindstack/tests/ElfTest.cpp b/libunwindstack/tests/ElfTest.cpp
index ccf8927..7766218 100644
--- a/libunwindstack/tests/ElfTest.cpp
+++ b/libunwindstack/tests/ElfTest.cpp
@@ -311,6 +311,7 @@
void InitHeaders(uint64_t) override {}
bool GetSoname(std::string*) override { return false; }
bool GetFunctionName(uint64_t, std::string*, uint64_t*) override { return false; }
+ bool GetBuildID(std::string*) override { return false; }
MOCK_METHOD4(Step, bool(uint64_t, Regs*, Memory*, bool*));
MOCK_METHOD2(GetGlobalVariable, bool(const std::string&, uint64_t*));
diff --git a/libunwindstack/tests/MapInfoCreateMemoryTest.cpp b/libunwindstack/tests/MapInfoCreateMemoryTest.cpp
index 0987bc1..943b3c9 100644
--- a/libunwindstack/tests/MapInfoCreateMemoryTest.cpp
+++ b/libunwindstack/tests/MapInfoCreateMemoryTest.cpp
@@ -59,16 +59,16 @@
}
static void SetUpTestCase() {
- std::vector<uint8_t> buffer(1024);
- memset(buffer.data(), 0, buffer.size());
+ std::vector<uint8_t> buffer(12288, 0);
memcpy(buffer.data(), ELFMAG, SELFMAG);
buffer[EI_CLASS] = ELFCLASS32;
- ASSERT_TRUE(android::base::WriteFully(elf_.fd, buffer.data(), buffer.size()));
+ ASSERT_TRUE(android::base::WriteFully(elf_.fd, buffer.data(), 1024));
memset(buffer.data(), 0, buffer.size());
- memcpy(&buffer[0x100], ELFMAG, SELFMAG);
- buffer[0x100 + EI_CLASS] = ELFCLASS64;
- ASSERT_TRUE(android::base::WriteFully(elf_at_100_.fd, buffer.data(), buffer.size()));
+ memcpy(&buffer[0x1000], ELFMAG, SELFMAG);
+ buffer[0x1000 + EI_CLASS] = ELFCLASS64;
+ buffer[0x2000] = 0xff;
+ ASSERT_TRUE(android::base::WriteFully(elf_at_1000_.fd, buffer.data(), buffer.size()));
InitElf<Elf32_Ehdr, Elf32_Shdr>(elf32_at_map_.fd, 0x1000, 0x2000, ELFCLASS32);
InitElf<Elf64_Ehdr, Elf64_Shdr>(elf64_at_map_.fd, 0x2000, 0x3000, ELFCLASS64);
@@ -84,13 +84,13 @@
static TemporaryFile elf_;
- static TemporaryFile elf_at_100_;
+ static TemporaryFile elf_at_1000_;
static TemporaryFile elf32_at_map_;
static TemporaryFile elf64_at_map_;
};
TemporaryFile MapInfoCreateMemoryTest::elf_;
-TemporaryFile MapInfoCreateMemoryTest::elf_at_100_;
+TemporaryFile MapInfoCreateMemoryTest::elf_at_1000_;
TemporaryFile MapInfoCreateMemoryTest::elf32_at_map_;
TemporaryFile MapInfoCreateMemoryTest::elf64_at_map_;
@@ -134,7 +134,7 @@
// Verify that if the offset is non-zero and there is an elf at that
// offset, that only part of the file is used.
TEST_F(MapInfoCreateMemoryTest, file_backed_non_zero_offset_partial_file) {
- MapInfo info(nullptr, 0x100, 0x200, 0x100, 0, elf_at_100_.path);
+ MapInfo info(nullptr, 0x100, 0x200, 0x1000, 0, elf_at_1000_.path);
std::unique_ptr<Memory> memory(info.CreateMemory(process_memory_));
ASSERT_TRUE(memory.get() != nullptr);
@@ -312,4 +312,43 @@
}
}
+TEST_F(MapInfoCreateMemoryTest, rosegment_from_file) {
+ Maps maps;
+ maps.Add(0x500, 0x600, 0, PROT_READ, "something_else", 0);
+ maps.Add(0x1000, 0x2000, 0x1000, PROT_READ, elf_at_1000_.path, 0);
+ maps.Add(0x2000, 0x3000, 0x2000, PROT_READ | PROT_EXEC, elf_at_1000_.path, 0);
+
+ MapInfo* map_info = maps.Find(0x2000);
+ ASSERT_TRUE(map_info != nullptr);
+
+ // Set up the size
+ Elf64_Ehdr ehdr;
+ ASSERT_EQ(0x1000, lseek(elf_at_1000_.fd, 0x1000, SEEK_SET));
+ ASSERT_TRUE(android::base::ReadFully(elf_at_1000_.fd, &ehdr, sizeof(ehdr)));
+
+ // Will not give the elf memory, because the read-only entry does not
+ // extend over the executable segment.
+ std::unique_ptr<Memory> memory(map_info->CreateMemory(process_memory_));
+ ASSERT_TRUE(memory.get() != nullptr);
+ std::vector<uint8_t> buffer(0x100);
+ EXPECT_EQ(0x2000U, map_info->offset);
+ EXPECT_EQ(0U, map_info->elf_offset);
+ ASSERT_TRUE(memory->ReadFully(0, buffer.data(), 0x100));
+ EXPECT_EQ(0xffU, buffer[0]);
+
+ // Now init the elf data enough so that the file memory object will be used.
+ ehdr.e_shoff = 0x4000;
+ ehdr.e_shnum = 1;
+ ehdr.e_shentsize = 0x100;
+ ASSERT_EQ(0x1000, lseek(elf_at_1000_.fd, 0x1000, SEEK_SET));
+ ASSERT_TRUE(android::base::WriteFully(elf_at_1000_.fd, &ehdr, sizeof(ehdr)));
+
+ memory.reset(map_info->CreateMemory(process_memory_));
+ EXPECT_EQ(0x2000U, map_info->offset);
+ EXPECT_EQ(0x1000U, map_info->elf_offset);
+ Elf64_Ehdr ehdr_mem;
+ ASSERT_TRUE(memory->ReadFully(0, &ehdr_mem, sizeof(ehdr_mem)));
+ EXPECT_TRUE(memcmp(&ehdr, &ehdr_mem, sizeof(ehdr)) == 0);
+}
+
} // namespace unwindstack
diff --git a/libunwindstack/tests/UnwindOfflineTest.cpp b/libunwindstack/tests/UnwindOfflineTest.cpp
index a65c077..dc015b4 100644
--- a/libunwindstack/tests/UnwindOfflineTest.cpp
+++ b/libunwindstack/tests/UnwindOfflineTest.cpp
@@ -1239,4 +1239,79 @@
EXPECT_EQ(0xffd4a718U, unwinder.frames()[7].sp);
}
+TEST_F(UnwindOfflineTest, shared_lib_in_apk_arm64) {
+ ASSERT_NO_FATAL_FAILURE(Init("shared_lib_in_apk_arm64/", ARCH_ARM64));
+
+ Unwinder unwinder(128, maps_.get(), regs_.get(), process_memory_);
+ unwinder.Unwind();
+
+ std::string frame_info(DumpFrames(unwinder));
+ ASSERT_EQ(7U, unwinder.NumFrames()) << "Unwind:\n" << frame_info;
+ EXPECT_EQ(
+ " #00 pc 000000000014ccbc (offset 0x39000) linker64 (__dl_syscall+28)\n"
+ " #01 pc 000000000005426c (offset 0x39000) linker64 "
+ "(__dl__ZL24debuggerd_signal_handleriP7siginfoPv+1128)\n"
+ " #02 pc 00000000000008bc vdso.so\n"
+ " #03 pc 00000000000846f4 (offset 0x40000) libc.so (abort+172)\n"
+ " #04 pc 0000000000084ad4 (offset 0x40000) libc.so (__assert2+36)\n"
+ " #05 pc 000000000003d5b4 (offset 0x40000) ANGLEPrebuilt.apk (ANGLEGetUtilityAPI+56)\n"
+ " #06 pc 000000000007fe68 (offset 0x40000) libc.so (__libc_init)\n",
+ frame_info);
+
+ EXPECT_EQ(0x7e82c4fcbcULL, unwinder.frames()[0].pc);
+ EXPECT_EQ(0x7df8ca3bf0ULL, unwinder.frames()[0].sp);
+ EXPECT_EQ(0x7e82b5726cULL, unwinder.frames()[1].pc);
+ EXPECT_EQ(0x7df8ca3bf0ULL, unwinder.frames()[1].sp);
+ EXPECT_EQ(0x7e82b018bcULL, unwinder.frames()[2].pc);
+ EXPECT_EQ(0x7df8ca3da0ULL, unwinder.frames()[2].sp);
+ EXPECT_EQ(0x7e7eecc6f4ULL, unwinder.frames()[3].pc);
+ EXPECT_EQ(0x7dabf3db60ULL, unwinder.frames()[3].sp);
+ EXPECT_EQ(0x7e7eeccad4ULL, unwinder.frames()[4].pc);
+ EXPECT_EQ(0x7dabf3dc40ULL, unwinder.frames()[4].sp);
+ EXPECT_EQ(0x7dabc405b4ULL, unwinder.frames()[5].pc);
+ EXPECT_EQ(0x7dabf3dc50ULL, unwinder.frames()[5].sp);
+ EXPECT_EQ(0x7e7eec7e68ULL, unwinder.frames()[6].pc);
+ EXPECT_EQ(0x7dabf3dc70ULL, unwinder.frames()[6].sp);
+ // Ignore top frame since the test code was modified to end in __libc_init.
+}
+
+TEST_F(UnwindOfflineTest, shared_lib_in_apk_memory_only_arm64) {
+ ASSERT_NO_FATAL_FAILURE(Init("shared_lib_in_apk_memory_only_arm64/", ARCH_ARM64));
+ // Add the memory that represents the shared library.
+ MemoryOfflineParts* memory = reinterpret_cast<MemoryOfflineParts*>(process_memory_.get());
+ AddMemory(dir_ + "lib_mem.data", memory);
+
+ Unwinder unwinder(128, maps_.get(), regs_.get(), process_memory_);
+ unwinder.Unwind();
+
+ std::string frame_info(DumpFrames(unwinder));
+ ASSERT_EQ(7U, unwinder.NumFrames()) << "Unwind:\n" << frame_info;
+ EXPECT_EQ(
+ " #00 pc 000000000014ccbc (offset 0x39000) linker64 (__dl_syscall+28)\n"
+ " #01 pc 000000000005426c (offset 0x39000) linker64 "
+ "(__dl__ZL24debuggerd_signal_handleriP7siginfoPv+1128)\n"
+ " #02 pc 00000000000008bc vdso.so\n"
+ " #03 pc 00000000000846f4 (offset 0x40000) libc.so (abort+172)\n"
+ " #04 pc 0000000000084ad4 (offset 0x40000) libc.so (__assert2+36)\n"
+ " #05 pc 000000000003d5b4 (offset 0x2211000) ANGLEPrebuilt.apk\n"
+ " #06 pc 000000000007fe68 (offset 0x40000) libc.so (__libc_init)\n",
+ frame_info);
+
+ EXPECT_EQ(0x7e82c4fcbcULL, unwinder.frames()[0].pc);
+ EXPECT_EQ(0x7df8ca3bf0ULL, unwinder.frames()[0].sp);
+ EXPECT_EQ(0x7e82b5726cULL, unwinder.frames()[1].pc);
+ EXPECT_EQ(0x7df8ca3bf0ULL, unwinder.frames()[1].sp);
+ EXPECT_EQ(0x7e82b018bcULL, unwinder.frames()[2].pc);
+ EXPECT_EQ(0x7df8ca3da0ULL, unwinder.frames()[2].sp);
+ EXPECT_EQ(0x7e7eecc6f4ULL, unwinder.frames()[3].pc);
+ EXPECT_EQ(0x7dabf3db60ULL, unwinder.frames()[3].sp);
+ EXPECT_EQ(0x7e7eeccad4ULL, unwinder.frames()[4].pc);
+ EXPECT_EQ(0x7dabf3dc40ULL, unwinder.frames()[4].sp);
+ EXPECT_EQ(0x7dabc405b4ULL, unwinder.frames()[5].pc);
+ EXPECT_EQ(0x7dabf3dc50ULL, unwinder.frames()[5].sp);
+ EXPECT_EQ(0x7e7eec7e68ULL, unwinder.frames()[6].pc);
+ EXPECT_EQ(0x7dabf3dc70ULL, unwinder.frames()[6].sp);
+ // Ignore top frame since the test code was modified to end in __libc_init.
+}
+
} // namespace unwindstack
diff --git a/libunwindstack/tests/UnwinderTest.cpp b/libunwindstack/tests/UnwinderTest.cpp
index 831d3b5..c4b8763 100644
--- a/libunwindstack/tests/UnwinderTest.cpp
+++ b/libunwindstack/tests/UnwinderTest.cpp
@@ -660,6 +660,54 @@
ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame1", 1));
// Fake as if code called a nullptr function.
+ regs_.set_pc(0x20000);
+ regs_.set_sp(0x10000);
+ ElfInterfaceFake::FakePushStepData(StepData(0, 0x10010, false));
+ regs_.FakeSetReturnAddress(0x12);
+ regs_.FakeSetReturnAddressValid(true);
+
+ Unwinder unwinder(64, &maps_, ®s_, process_memory_);
+ unwinder.Unwind();
+ EXPECT_EQ(ERROR_INVALID_MAP, unwinder.LastErrorCode());
+
+ ASSERT_EQ(2U, unwinder.NumFrames());
+
+ auto* frame = &unwinder.frames()[0];
+ EXPECT_EQ(0U, frame->num);
+ EXPECT_EQ(0U, frame->rel_pc);
+ EXPECT_EQ(0x20000U, frame->pc);
+ EXPECT_EQ(0x10000U, frame->sp);
+ EXPECT_EQ("Frame0", frame->function_name);
+ EXPECT_EQ(0U, frame->function_offset);
+ EXPECT_EQ("/system/fake/libunwind.so", frame->map_name);
+ EXPECT_EQ(0U, frame->map_offset);
+ EXPECT_EQ(0x20000U, frame->map_start);
+ EXPECT_EQ(0x22000U, frame->map_end);
+ EXPECT_EQ(0U, frame->map_load_bias);
+ EXPECT_EQ(PROT_READ | PROT_WRITE, frame->map_flags);
+
+ frame = &unwinder.frames()[1];
+ EXPECT_EQ(1U, frame->num);
+ EXPECT_EQ(0U, frame->rel_pc);
+ EXPECT_EQ(0U, frame->pc);
+ EXPECT_EQ(0x10010U, frame->sp);
+ EXPECT_EQ("", frame->function_name);
+ EXPECT_EQ(0U, frame->function_offset);
+ EXPECT_EQ("", frame->map_name);
+ EXPECT_EQ(0U, frame->map_offset);
+ EXPECT_EQ(0U, frame->map_start);
+ EXPECT_EQ(0U, frame->map_end);
+ EXPECT_EQ(0U, frame->map_load_bias);
+ EXPECT_EQ(0, frame->map_flags);
+}
+
+// Verify that a speculative frame is added and left if there are only
+// two frames and the pc is in the middle nowhere.
+TEST_F(UnwinderTest, speculative_frame_not_removed_pc_bad) {
+ ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame0", 0));
+ ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame1", 1));
+
+ // Fake as if code called a nullptr function.
regs_.set_pc(0);
regs_.set_sp(0x10000);
regs_.FakeSetReturnAddress(0x1202);
@@ -669,7 +717,7 @@
unwinder.Unwind();
EXPECT_EQ(ERROR_NONE, unwinder.LastErrorCode());
- ASSERT_EQ(1U, unwinder.NumFrames());
+ ASSERT_EQ(2U, unwinder.NumFrames());
auto* frame = &unwinder.frames()[0];
EXPECT_EQ(0U, frame->num);
@@ -684,6 +732,20 @@
EXPECT_EQ(0U, frame->map_end);
EXPECT_EQ(0U, frame->map_load_bias);
EXPECT_EQ(0, frame->map_flags);
+
+ frame = &unwinder.frames()[1];
+ EXPECT_EQ(1U, frame->num);
+ EXPECT_EQ(0x200U, frame->rel_pc);
+ EXPECT_EQ(0x1200U, frame->pc);
+ EXPECT_EQ(0x10000U, frame->sp);
+ EXPECT_EQ("Frame0", frame->function_name);
+ EXPECT_EQ(0U, frame->function_offset);
+ EXPECT_EQ("/system/fake/libc.so", frame->map_name);
+ EXPECT_EQ(0U, frame->map_offset);
+ EXPECT_EQ(0x1000U, frame->map_start);
+ EXPECT_EQ(0x8000U, frame->map_end);
+ EXPECT_EQ(0U, frame->map_load_bias);
+ EXPECT_EQ(PROT_READ | PROT_WRITE, frame->map_flags);
}
// Verify that an unwind stops when a frame is in given suffix.
diff --git a/libunwindstack/tests/files/offline/shared_lib_in_apk_arm64/ANGLEPrebuilt.apk b/libunwindstack/tests/files/offline/shared_lib_in_apk_arm64/ANGLEPrebuilt.apk
new file mode 100644
index 0000000..0277359
--- /dev/null
+++ b/libunwindstack/tests/files/offline/shared_lib_in_apk_arm64/ANGLEPrebuilt.apk
Binary files differ
diff --git a/libunwindstack/tests/files/offline/shared_lib_in_apk_arm64/libc.so b/libunwindstack/tests/files/offline/shared_lib_in_apk_arm64/libc.so
new file mode 100644
index 0000000..20008fd
--- /dev/null
+++ b/libunwindstack/tests/files/offline/shared_lib_in_apk_arm64/libc.so
Binary files differ
diff --git a/libunwindstack/tests/files/offline/shared_lib_in_apk_arm64/linker64 b/libunwindstack/tests/files/offline/shared_lib_in_apk_arm64/linker64
new file mode 100644
index 0000000..b90933b
--- /dev/null
+++ b/libunwindstack/tests/files/offline/shared_lib_in_apk_arm64/linker64
Binary files differ
diff --git a/libunwindstack/tests/files/offline/shared_lib_in_apk_arm64/maps.txt b/libunwindstack/tests/files/offline/shared_lib_in_apk_arm64/maps.txt
new file mode 100644
index 0000000..c4fc067
--- /dev/null
+++ b/libunwindstack/tests/files/offline/shared_lib_in_apk_arm64/maps.txt
@@ -0,0 +1,7 @@
+7dabc03000-7dabc3f000 r--p 4000 00:00 0 ANGLEPrebuilt.apk
+7dabc3f000-7dabcf0000 r-xp 40000 00:00 0 ANGLEPrebuilt.apk
+7e7ee48000-7e7ee88000 r--p 0 00:00 0 libc.so
+7e7ee88000-7e7ef32000 r-xp 40000 00:00 0 libc.so
+7e82b01000-7e82b03000 r-xp 0 00:00 0 vdso.so
+7e82b03000-7e82b3c000 r--p 0 00:00 0 linker64
+7e82b3c000-7e82c77000 r-xp 39000 00:00 0 linker64
diff --git a/libunwindstack/tests/files/offline/shared_lib_in_apk_arm64/regs.txt b/libunwindstack/tests/files/offline/shared_lib_in_apk_arm64/regs.txt
new file mode 100644
index 0000000..1e2ea32
--- /dev/null
+++ b/libunwindstack/tests/files/offline/shared_lib_in_apk_arm64/regs.txt
@@ -0,0 +1,33 @@
+x0: 7df8ca3c24
+x1: 0
+x2: ffffffff
+x3: 0
+x4: 0
+x5: 0
+x6: 0
+x7: 7f7f7f7f7f7f7f7f
+x8: 62
+x9: 20dd5829922a93ac
+x10: 7e82b57420
+x11: 4100
+x12: 7df8ca3b70
+x13: 7df8ca3b98
+x14: 73d015e5
+x15: 39a36122467299
+x16: 76ac
+x17: 0
+x18: 7df8cfc000
+x19: 7dabf3e7a0
+x20: 7df8ca3da0
+x21: 59616d61
+x22: 1
+x23: 7df8ca3c24
+x24: 1894
+x25: 62
+x26: 2
+x27: 0
+x28: 7dabf3e790
+x29: 7df8ca3d90
+sp: 7df8ca3bf0
+lr: 7e82b57270
+pc: 7e82c4fcbc
diff --git a/libunwindstack/tests/files/offline/shared_lib_in_apk_arm64/stack0.data b/libunwindstack/tests/files/offline/shared_lib_in_apk_arm64/stack0.data
new file mode 100644
index 0000000..ec07e15
--- /dev/null
+++ b/libunwindstack/tests/files/offline/shared_lib_in_apk_arm64/stack0.data
Binary files differ
diff --git a/libunwindstack/tests/files/offline/shared_lib_in_apk_arm64/stack1.data b/libunwindstack/tests/files/offline/shared_lib_in_apk_arm64/stack1.data
new file mode 100644
index 0000000..825bb1a
--- /dev/null
+++ b/libunwindstack/tests/files/offline/shared_lib_in_apk_arm64/stack1.data
Binary files differ
diff --git a/libunwindstack/tests/files/offline/shared_lib_in_apk_arm64/vdso.so b/libunwindstack/tests/files/offline/shared_lib_in_apk_arm64/vdso.so
new file mode 100644
index 0000000..205ebd4
--- /dev/null
+++ b/libunwindstack/tests/files/offline/shared_lib_in_apk_arm64/vdso.so
Binary files differ
diff --git a/libunwindstack/tests/files/offline/shared_lib_in_apk_memory_only_arm64/lib_mem.data b/libunwindstack/tests/files/offline/shared_lib_in_apk_memory_only_arm64/lib_mem.data
new file mode 100644
index 0000000..f39d127
--- /dev/null
+++ b/libunwindstack/tests/files/offline/shared_lib_in_apk_memory_only_arm64/lib_mem.data
Binary files differ
diff --git a/libunwindstack/tests/files/offline/shared_lib_in_apk_memory_only_arm64/libc.so b/libunwindstack/tests/files/offline/shared_lib_in_apk_memory_only_arm64/libc.so
new file mode 100644
index 0000000..20008fd
--- /dev/null
+++ b/libunwindstack/tests/files/offline/shared_lib_in_apk_memory_only_arm64/libc.so
Binary files differ
diff --git a/libunwindstack/tests/files/offline/shared_lib_in_apk_memory_only_arm64/linker64 b/libunwindstack/tests/files/offline/shared_lib_in_apk_memory_only_arm64/linker64
new file mode 100644
index 0000000..b90933b
--- /dev/null
+++ b/libunwindstack/tests/files/offline/shared_lib_in_apk_memory_only_arm64/linker64
Binary files differ
diff --git a/libunwindstack/tests/files/offline/shared_lib_in_apk_memory_only_arm64/maps.txt b/libunwindstack/tests/files/offline/shared_lib_in_apk_memory_only_arm64/maps.txt
new file mode 100644
index 0000000..386d57a
--- /dev/null
+++ b/libunwindstack/tests/files/offline/shared_lib_in_apk_memory_only_arm64/maps.txt
@@ -0,0 +1,7 @@
+7dabc03000-7dabc3f000 r--p 21d5000 00:00 0 ANGLEPrebuilt.apk
+7dabc3f000-7dabcf0000 r-xp 2211000 00:00 0 ANGLEPrebuilt.apk
+7e7ee48000-7e7ee88000 r--p 0 00:00 0 libc.so
+7e7ee88000-7e7ef32000 r-xp 40000 00:00 0 libc.so
+7e82b01000-7e82b03000 r-xp 0 00:00 0 vdso.so
+7e82b03000-7e82b3c000 r--p 0 00:00 0 linker64
+7e82b3c000-7e82c77000 r-xp 39000 00:00 0 linker64
diff --git a/libunwindstack/tests/files/offline/shared_lib_in_apk_memory_only_arm64/regs.txt b/libunwindstack/tests/files/offline/shared_lib_in_apk_memory_only_arm64/regs.txt
new file mode 100644
index 0000000..1e2ea32
--- /dev/null
+++ b/libunwindstack/tests/files/offline/shared_lib_in_apk_memory_only_arm64/regs.txt
@@ -0,0 +1,33 @@
+x0: 7df8ca3c24
+x1: 0
+x2: ffffffff
+x3: 0
+x4: 0
+x5: 0
+x6: 0
+x7: 7f7f7f7f7f7f7f7f
+x8: 62
+x9: 20dd5829922a93ac
+x10: 7e82b57420
+x11: 4100
+x12: 7df8ca3b70
+x13: 7df8ca3b98
+x14: 73d015e5
+x15: 39a36122467299
+x16: 76ac
+x17: 0
+x18: 7df8cfc000
+x19: 7dabf3e7a0
+x20: 7df8ca3da0
+x21: 59616d61
+x22: 1
+x23: 7df8ca3c24
+x24: 1894
+x25: 62
+x26: 2
+x27: 0
+x28: 7dabf3e790
+x29: 7df8ca3d90
+sp: 7df8ca3bf0
+lr: 7e82b57270
+pc: 7e82c4fcbc
diff --git a/libunwindstack/tests/files/offline/shared_lib_in_apk_memory_only_arm64/stack0.data b/libunwindstack/tests/files/offline/shared_lib_in_apk_memory_only_arm64/stack0.data
new file mode 100644
index 0000000..ec07e15
--- /dev/null
+++ b/libunwindstack/tests/files/offline/shared_lib_in_apk_memory_only_arm64/stack0.data
Binary files differ
diff --git a/libunwindstack/tests/files/offline/shared_lib_in_apk_memory_only_arm64/stack1.data b/libunwindstack/tests/files/offline/shared_lib_in_apk_memory_only_arm64/stack1.data
new file mode 100644
index 0000000..825bb1a
--- /dev/null
+++ b/libunwindstack/tests/files/offline/shared_lib_in_apk_memory_only_arm64/stack1.data
Binary files differ
diff --git a/libunwindstack/tests/files/offline/shared_lib_in_apk_memory_only_arm64/vdso.so b/libunwindstack/tests/files/offline/shared_lib_in_apk_memory_only_arm64/vdso.so
new file mode 100644
index 0000000..205ebd4
--- /dev/null
+++ b/libunwindstack/tests/files/offline/shared_lib_in_apk_memory_only_arm64/vdso.so
Binary files differ
diff --git a/libunwindstack/tools/unwind.cpp b/libunwindstack/tools/unwind.cpp
index 22ca7bf..e729453 100644
--- a/libunwindstack/tools/unwind.cpp
+++ b/libunwindstack/tools/unwind.cpp
@@ -35,7 +35,12 @@
#include <unwindstack/Unwinder.h>
static bool Attach(pid_t pid) {
- if (ptrace(PTRACE_ATTACH, pid, 0, 0) == -1) {
+ if (ptrace(PTRACE_SEIZE, pid, 0, 0) == -1) {
+ return false;
+ }
+
+ if (ptrace(PTRACE_INTERRUPT, pid, 0, 0) == -1) {
+ ptrace(PTRACE_DETACH, pid, 0, 0);
return false;
}
diff --git a/libunwindstack/tools/unwind_for_offline.cpp b/libunwindstack/tools/unwind_for_offline.cpp
index 640992f..652dbd1 100644
--- a/libunwindstack/tools/unwind_for_offline.cpp
+++ b/libunwindstack/tools/unwind_for_offline.cpp
@@ -50,7 +50,12 @@
};
static bool Attach(pid_t pid) {
- if (ptrace(PTRACE_ATTACH, pid, 0, 0) == -1) {
+ if (ptrace(PTRACE_SEIZE, pid, 0, 0) == -1) {
+ return false;
+ }
+
+ if (ptrace(PTRACE_INTERRUPT, pid, 0, 0) == -1) {
+ ptrace(PTRACE_DETACH, pid, 0, 0);
return false;
}
@@ -224,7 +229,7 @@
sp_map_start = map_info->start;
}
- for (auto frame : unwinder.frames()) {
+ for (const auto& frame : unwinder.frames()) {
map_info = maps.Find(frame.sp);
if (map_info != nullptr && sp_map_start != map_info->start) {
stacks.emplace_back(std::make_pair(frame.sp, map_info->end));
diff --git a/libunwindstack/tools/unwind_info.cpp b/libunwindstack/tools/unwind_info.cpp
index aebeb95..3f2dfb0 100644
--- a/libunwindstack/tools/unwind_info.cpp
+++ b/libunwindstack/tools/unwind_info.cpp
@@ -123,6 +123,15 @@
printf("Soname: %s\n", soname.c_str());
}
+ std::string build_id;
+ if (elf.GetBuildID(&build_id)) {
+ printf("Build ID: ");
+ for (size_t i = 0; i < build_id.size(); ++i) {
+ printf("%02hhx", build_id[i]);
+ }
+ printf("\n");
+ }
+
ElfInterface* interface = elf.interface();
if (elf.machine_type() == EM_ARM) {
DumpArm(&elf, reinterpret_cast<ElfInterfaceArm*>(interface));
diff --git a/libutils/Looper.cpp b/libutils/Looper.cpp
index 102fdf0..b3f943d 100644
--- a/libutils/Looper.cpp
+++ b/libutils/Looper.cpp
@@ -51,9 +51,6 @@
// --- Looper ---
-// Hint for number of file descriptors to be associated with the epoll instance.
-static const int EPOLL_SIZE_HINT = 8;
-
// Maximum number of file descriptors for which to retrieve poll events each iteration.
static const int EPOLL_MAX_EVENTS = 16;
@@ -139,7 +136,7 @@
}
// Allocate the new epoll instance and register the wake pipe.
- mEpollFd.reset(epoll_create(EPOLL_SIZE_HINT));
+ mEpollFd.reset(epoll_create1(EPOLL_CLOEXEC));
LOG_ALWAYS_FATAL_IF(mEpollFd < 0, "Could not create epoll instance: %s", strerror(errno));
struct epoll_event eventItem;
diff --git a/llkd/README.md b/llkd/README.md
index 3da7a2f..224e184 100644
--- a/llkd/README.md
+++ b/llkd/README.md
@@ -160,7 +160,7 @@
NB: false is a very very very unlikely process to want to blacklist.
#### ro.llk.blacklist.parent
-default 0,2 (kernel and [kthreadd]).
+default 0,2,adbd (kernel, [kthreadd] and adbd).
The string "*false*" is the equivalent to an *empty* list.
Do not watch processes that have this parent.
A parent process can be comm, cmdline or pid reference.
diff --git a/llkd/include/llkd.h b/llkd/include/llkd.h
index b16b1d8..1efa32b 100644
--- a/llkd/include/llkd.h
+++ b/llkd/include/llkd.h
@@ -55,7 +55,11 @@
#define LLK_BLACKLIST_PROCESS_DEFAULT \
"0,1,2,init,[kthreadd],[khungtaskd],lmkd,llkd,watchdogd,[watchdogd],[watchdogd/0]"
#define LLK_BLACKLIST_PARENT_PROPERTY "ro.llk.blacklist.parent"
+#ifdef __PTRACE_ENABLED__ // defined if userdebug build
+#define LLK_BLACKLIST_PARENT_DEFAULT "0,2,[kthreadd],adbd"
+#else
#define LLK_BLACKLIST_PARENT_DEFAULT "0,2,[kthreadd]"
+#endif
#define LLK_BLACKLIST_UID_PROPERTY "ro.llk.blacklist.uid"
#define LLK_BLACKLIST_UID_DEFAULT ""
#define LLK_BLACKLIST_STACK_PROPERTY "ro.llk.blacklist.process.stack"
diff --git a/llkd/libllkd.cpp b/llkd/libllkd.cpp
index 427dace..267da4a 100644
--- a/llkd/libllkd.cpp
+++ b/llkd/libllkd.cpp
@@ -510,9 +510,7 @@
return android::base::Trim(content) == string;
}
-void llkPanicKernel(bool dump, pid_t tid, const char* state,
- const std::string& message = "") __noreturn;
-void llkPanicKernel(bool dump, pid_t tid, const char* state, const std::string& message) {
+void llkPanicKernel(bool dump, pid_t tid, const char* state, const std::string& message = "") {
if (!message.empty()) LOG(ERROR) << message;
auto sysrqTriggerFd = llkFileToWriteFd("/proc/sysrq-trigger");
if (sysrqTriggerFd < 0) {
@@ -521,6 +519,7 @@
// The answer to life, the universe and everything
::exit(42);
// NOTREACHED
+ return;
}
::sync();
if (dump) {
@@ -544,6 +543,13 @@
llkWriteStringToFile(message + (message.empty() ? "" : "\n") +
"SysRq : Trigger a crash : 'livelock,"s + state + "'\n",
"/dev/kmsg");
+ // Because panic is such a serious thing to do, let us
+ // make sure that the tid being inspected still exists!
+ auto piddir = procdir + std::to_string(tid) + "/stat";
+ if (access(piddir.c_str(), F_OK) != 0) {
+ PLOG(WARNING) << piddir;
+ return;
+ }
android::base::WriteStringToFd("c", sysrqTriggerFd);
// NOTREACHED
// DYB
@@ -610,7 +616,7 @@
std::string llkFormat(const std::unordered_set<std::string>& blacklist) {
std::string ret;
- for (auto entry : blacklist) {
+ for (const auto& entry : blacklist) {
if (ret.size()) {
ret += ",";
}
@@ -909,6 +915,7 @@
ms -= llkCycle;
auto myPid = ::getpid();
auto myTid = ::gettid();
+ auto dump = true;
for (auto dp = llkTopDirectory.read(); dp != nullptr; dp = llkTopDirectory.read()) {
std::string piddir;
@@ -1109,9 +1116,10 @@
const auto message = state + " "s + llkFormat(procp->count) + " " +
std::to_string(ppid) + "->" + std::to_string(pid) + "->" +
std::to_string(tid) + " " + procp->getComm() + " [panic]";
- llkPanicKernel(true, tid,
+ llkPanicKernel(dump, tid,
(state == 'Z') ? "zombie" : (state == 'D') ? "driver" : "sleeping",
message);
+ dump = false;
}
LOG(VERBOSE) << "+closedir()";
}
diff --git a/property_service/libpropertyinfoparser/Android.bp b/property_service/libpropertyinfoparser/Android.bp
index 70f6faa..6637deb 100644
--- a/property_service/libpropertyinfoparser/Android.bp
+++ b/property_service/libpropertyinfoparser/Android.bp
@@ -12,5 +12,6 @@
"-Werror",
],
stl: "none",
+ system_shared_libs: [],
export_include_dirs: ["include"],
}
diff --git a/rootdir/Android.mk b/rootdir/Android.mk
index aad00ad..f88f6b9 100644
--- a/rootdir/Android.mk
+++ b/rootdir/Android.mk
@@ -9,6 +9,10 @@
LOCAL_MODULE_CLASS := ETC
LOCAL_MODULE_PATH := $(TARGET_ROOT_OUT)
+# The init symlink must be a post install command of a file that is to TARGET_ROOT_OUT.
+# Since init.rc is required for init and satisfies that requirement, we hijack it to create the symlink.
+LOCAL_POST_INSTALL_CMD := ln -sf /system/bin/init $(TARGET_ROOT_OUT)/init
+
include $(BUILD_PREBUILT)
#######################################
diff --git a/rootdir/etc/ld.config.legacy.txt b/rootdir/etc/ld.config.legacy.txt
index ca6aafe..461184a 100644
--- a/rootdir/etc/ld.config.legacy.txt
+++ b/rootdir/etc/ld.config.legacy.txt
@@ -6,35 +6,40 @@
# All binaries gets the same configuration 'legacy'
dir.legacy = /system
+dir.legacy = /product
dir.legacy = /vendor
dir.legacy = /odm
dir.legacy = /sbin
-# Except for /postinstall, where only /system is searched
+# Except for /postinstall, where only /system and /product are searched
dir.postinstall = /postinstall
[legacy]
namespace.default.isolated = false
namespace.default.search.paths = /system/${LIB}
+namespace.default.search.paths += /product/${LIB}
namespace.default.search.paths += /vendor/${LIB}
namespace.default.search.paths += /odm/${LIB}
namespace.default.asan.search.paths = /data/asan/system/${LIB}
namespace.default.asan.search.paths += /system/${LIB}
-namespace.default.asan.search.paths += /data/asan/odm/${LIB}
-namespace.default.asan.search.paths += /odm/${LIB}
+namespace.default.asan.search.paths += /data/asan/product/${LIB}
+namespace.default.asan.search.paths += /product/${LIB}
namespace.default.asan.search.paths += /data/asan/vendor/${LIB}
namespace.default.asan.search.paths += /vendor/${LIB}
+namespace.default.asan.search.paths += /data/asan/odm/${LIB}
+namespace.default.asan.search.paths += /odm/${LIB}
###############################################################################
# Namespace config for binaries under /postinstall.
# Only one default namespace is defined and it has no directories other than
-# /system/lib in the search paths. This is because linker calls realpath on the
-# search paths and this causes selinux denial if the paths (/vendor, /odm) are
-# not allowed to the poinstall binaries. There is no reason to allow the
-# binaries to access the paths.
+# /system/lib and /product/lib in the search paths. This is because linker
+# calls realpath on the search paths and this causes selinux denial if the
+# paths (/vendor, /odm) are not allowed to the poinstall binaries.
+# There is no reason to allow the binaries to access the paths.
###############################################################################
[postinstall]
namespace.default.isolated = false
-namespace.default.search.paths = /system/${LIB}
+namespace.default.search.paths = /system/${LIB}
+namespace.default.search.paths += /product/${LIB}
diff --git a/rootdir/init.environ.rc.in b/rootdir/init.environ.rc.in
index 4576776..d10f7c1 100644
--- a/rootdir/init.environ.rc.in
+++ b/rootdir/init.environ.rc.in
@@ -5,6 +5,7 @@
export ANDROID_ASSETS /system/app
export ANDROID_DATA /data
export ANDROID_STORAGE /storage
+ export ANDROID_RUNTIME_ROOT /apex/com.android.runtime
export EXTERNAL_STORAGE /sdcard
export ASEC_MOUNTPOINT /mnt/asec
export BOOTCLASSPATH %BOOTCLASSPATH%
diff --git a/rootdir/init.rc b/rootdir/init.rc
index 349168e..6fb1a8b 100644
--- a/rootdir/init.rc
+++ b/rootdir/init.rc
@@ -583,8 +583,8 @@
# Set SELinux security contexts on upgrade or policy update.
restorecon --recursive --skip-ce /data
- # Check any timezone data in /data is newer than the copy in /system, delete if not.
- exec - system system -- /system/bin/tzdatacheck /system/usr/share/zoneinfo /data/misc/zoneinfo
+ # Check any timezone data in /data is newer than the copy in the runtime module, delete if not.
+ exec - system system -- /system/bin/tzdatacheck /apex/com.android.runtime/etc/tz /data/misc/zoneinfo
# If there is no post-fs-data action in the init.<device>.rc file, you
# must uncomment this line, otherwise encrypted filesystems
diff --git a/rootdir/ueventd.rc b/rootdir/ueventd.rc
index d47506c..35f469a 100644
--- a/rootdir/ueventd.rc
+++ b/rootdir/ueventd.rc
@@ -1,7 +1,5 @@
firmware_directories /etc/firmware/ /odm/firmware/ /vendor/firmware/ /firmware/image/
-
-subsystem adf
- devname uevent_devname
+uevent_socket_rcvbuf_size 16M
subsystem graphics
devname uevent_devpath
@@ -11,26 +9,10 @@
devname uevent_devpath
dirname /dev/dri
-subsystem oncrpc
- devname uevent_devpath
- dirname /dev/oncrpc
-
-subsystem adsp
- devname uevent_devpath
- dirname /dev/adsp
-
-subsystem msm_camera
- devname uevent_devpath
- dirname /dev/msm_camera
-
subsystem input
devname uevent_devpath
dirname /dev/input
-subsystem mtd
- devname uevent_devpath
- dirname /dev/mtd
-
subsystem sound
devname uevent_devpath
dirname /dev/snd
@@ -58,73 +40,27 @@
/dev/pmsg0 0222 root log
-# the msm hw3d client device node is world writable/readable.
-/dev/msm_hw3dc 0666 root root
-
-# gpu driver for adreno200 is globally accessible
-/dev/kgsl 0666 root root
-
# kms driver for drm based gpu
/dev/dri/* 0666 root graphics
# these should not be world writable
/dev/diag 0660 radio radio
-/dev/diag_arm9 0660 radio radio
/dev/ttyMSM0 0600 bluetooth bluetooth
/dev/uhid 0660 uhid uhid
/dev/uinput 0660 uhid uhid
-/dev/alarm 0664 system radio
/dev/rtc0 0640 system system
/dev/tty0 0660 root system
/dev/graphics/* 0660 root graphics
-/dev/msm_hw3dm 0660 system graphics
/dev/input/* 0660 root input
/dev/v4l-touch* 0660 root input
-/dev/eac 0660 root audio
-/dev/cam 0660 root camera
-/dev/pmem 0660 system graphics
-/dev/pmem_adsp* 0660 system audio
-/dev/pmem_camera* 0660 system camera
-/dev/oncrpc/* 0660 root system
-/dev/adsp/* 0660 system audio
/dev/snd/* 0660 system audio
-/dev/mt9t013 0660 system system
-/dev/msm_camera/* 0660 system system
-/dev/akm8976_daemon 0640 compass system
-/dev/akm8976_aot 0640 compass system
-/dev/akm8973_daemon 0640 compass system
-/dev/akm8973_aot 0640 compass system
-/dev/bma150 0640 compass system
-/dev/cm3602 0640 compass system
-/dev/akm8976_pffd 0640 compass system
-/dev/lightsensor 0640 system system
-/dev/msm_pcm_out* 0660 system audio
-/dev/msm_pcm_in* 0660 system audio
-/dev/msm_pcm_ctl* 0660 system audio
-/dev/msm_snd* 0660 system audio
/dev/msm_mp3* 0660 system audio
-/dev/audience_a1026* 0660 system audio
-/dev/tpa2018d1* 0660 system audio
-/dev/msm_audpre 0660 system audio
-/dev/msm_audio_ctl 0660 system audio
-/dev/htc-acoustic 0660 system audio
-/dev/vdec 0660 system audio
-/dev/q6venc 0660 system audio
-/dev/snd/dsp 0660 system audio
-/dev/snd/dsp1 0660 system audio
-/dev/snd/mixer 0660 system audio
-/dev/smd0 0640 radio radio
-/dev/qmi 0640 radio radio
-/dev/qmi0 0640 radio radio
-/dev/qmi1 0640 radio radio
-/dev/qmi2 0640 radio radio
/dev/bus/usb/* 0660 root usb
/dev/mtp_usb 0660 root mtp
/dev/usb_accessory 0660 root usb
/dev/tun 0660 system vpn
# CDMA radio interface MUX
-/dev/ts0710mux* 0640 radio radio
/dev/ppp 0660 radio vpn
# sysfs properties
@@ -134,6 +70,3 @@
/sys/devices/virtual/usb_composite/* enable 0664 root system
/sys/devices/system/cpu/cpu* cpufreq/scaling_max_freq 0664 system system
/sys/devices/system/cpu/cpu* cpufreq/scaling_min_freq 0664 system system
-
-# DVB API device nodes
-/dev/dvb* 0660 root system
diff --git a/shell_and_utilities/README.md b/shell_and_utilities/README.md
index d8cf867..ffda3a5 100644
--- a/shell_and_utilities/README.md
+++ b/shell_and_utilities/README.md
@@ -1,5 +1,4 @@
-Android's shell and utilities
-=============================
+# Android's shell and utilities
Since IceCreamSandwich Android has used
[mksh](https://www.mirbsd.org/mksh.htm) as its shell. Before then it used
@@ -34,8 +33,7 @@
full list for a release by running `toybox` directly.
-Android 2.3 (Gingerbread)
--------------------------
+## Android 2.3 (Gingerbread)
BSD: cat dd newfs\_msdos
@@ -46,8 +44,7 @@
umount uptime vmstat watchprops wipe
-Android 4.0 (IceCreamSandwich)
-------------------------------
+## Android 4.0 (IceCreamSandwich)
BSD: cat dd newfs\_msdos
@@ -58,8 +55,7 @@
touch umount uptime vmstat watchprops wipe
-Android 4.1-4.3 (JellyBean)
----------------------------
+## Android 4.1-4.3 (JellyBean)
BSD: cat cp dd du grep newfs\_msdos
@@ -71,8 +67,7 @@
sync top touch umount uptime vmstat watchprops wipe
-Android 4.4 (KitKat)
---------------------
+## Android 4.4 (KitKat)
BSD: cat cp dd du grep newfs\_msdos
@@ -84,8 +79,7 @@
stop swapoff swapon sync top touch umount uptime vmstat watchprops wipe
-Android 5.0 (Lollipop)
-----------------------
+## Android 5.0 (Lollipop)
BSD: cat chown cp dd du grep kill ln mv printenv rm rmdir sleep sync
@@ -97,8 +91,7 @@
top touch umount uptime vmstat watchprops wipe
-Android 6.0 (Marshmallow)
--------------------------
+## Android 6.0 (Marshmallow)
BSD: dd du grep
@@ -118,8 +111,7 @@
vmstat wc which whoami xargs yes
-Android 7.0 (Nougat)
---------------------
+## Android 7.0 (Nougat)
BSD: dd grep
@@ -140,8 +132,7 @@
uptime usleep vmstat wc which whoami xargs xxd yes
-Android 8.0 (Oreo)
-------------------
+## Android 8.0 (Oreo)
BSD: dd grep
@@ -164,8 +155,8 @@
tty ulimit umount uname uniq unix2dos uptime usleep uudecode uuencode
vmstat wc which whoami xargs xxd yes zcat
-Android P
----------
+
+## Android 9.0 (Pie)
BSD: dd grep
@@ -190,8 +181,8 @@
umount uname uniq unix2dos uptime usleep uudecode uuencode vmstat wc
which whoami xargs xxd yes zcat
-Android Q
----------
+
+## Android Q
BSD: grep fsck\_msdos newfs\_msdos
@@ -201,17 +192,22 @@
toolbox: getevent getprop
-toybox: acpi base64 basename blockdev cal cat chcon chgrp chmod chown
-chroot chrt cksum clear cmp comm cp cpio cut date dd df diff dirname
-dmesg dos2unix du echo env expand expr fallocate false file find flock
-fmt free getenforce groups gunzip gzip head hostname hwclock id ifconfig
-inotifyd insmod ionice iorenice kill killall ln load\_policy log logname
-losetup ls lsmod lsof lspci lsusb md5sum microcom mkdir mkfifo mknod
-mkswap mktemp modinfo modprobe more mount mountpoint mv nc netcat netstat
-nice nl nohup nsenter od paste patch pgrep pidof pkill pmap printenv
-printf ps pwd readlink realpath renice restorecon rm rmdir rmmod runcon
-sed sendevent seq setenforce setprop setsid sha1sum sha224sum sha256sum
-sha384sum sha512sum sleep sort split start stat stop strings stty swapoff
-swapon sync sysctl tac tail tar taskset tee time timeout top touch tr
-true truncate tty ulimit umount uname uniq unix2dos unshare uptime usleep
-uudecode uuencode vmstat wc which whoami xargs xxd yes zcat
+toybox: acpi base64 basename bc blkid blockdev cal cat chattr chcon chgrp
+chmod chown chroot chrt cksum clear cmp comm cp cpio cut date dd df
+diff dirname dmesg dos2unix du echo egrep env expand expr fallocate
+false fgrep file find flock fmt free freeramdisk fsfreeze getconf
+getenforce getfattr grep groups gunzip gzip head help hostname hwclock
+i2cdetect i2cdump i2cget i2cset iconv id ifconfig inotifyd insmod
+install ionice iorenice iotop kill killall ln load\_policy log logname
+losetup ls lsattr lsmod lsof lspci lsusb makedevs md5sum microcom
+mkdir mkfifo mknod mkswap mktemp modinfo modprobe more mount mountpoint
+mv nbd-client nc netcat netstat nice nl nohup nproc nsenter od partprobe
+paste patch pgrep pidof ping ping6 pivot\_root pkill pmap printenv
+printf prlimit ps pwd pwdx readlink realpath renice restorecon rev
+rfkill rm rmdir rmmod runcon sed sendevent seq setenforce setfattr
+setprop setsid sha1sum sha224sum sha256sum sha384sum sha512sum sleep
+sort split start stat stop strings stty swapoff swapon sync sysctl
+tac tail tar taskset tee time timeout top touch tr traceroute traceroute6
+true truncate tty tunctl ulimit umount uname uniq unix2dos unlink
+unshare uptime usleep uudecode uuencode uuidgen vconfig vmstat watch
+wc which whoami xargs xxd yes zcat