Merge "Convert autosuspend_wakeup_count.c to cpp"
diff --git a/base/include/android-base/logging.h b/base/include/android-base/logging.h
index f93c696..afff2c9 100644
--- a/base/include/android-base/logging.h
+++ b/base/include/android-base/logging.h
@@ -42,6 +42,10 @@
// By default, output goes to logcat on Android and stderr on the host.
// A process can use `SetLogger` to decide where all logging goes.
// Implementations are provided for logcat, stderr, and dmesg.
+//
+// By default, the process' name is used as the log tag.
+// Code can choose a specific log tag by defining LOG_TAG
+// before including this header.
// This header also provides assertions:
//
@@ -63,6 +67,16 @@
#include "android-base/macros.h"
+// Note: DO NOT USE DIRECTLY. Use LOG_TAG instead.
+#ifdef _LOG_TAG_INTERNAL
+#error "_LOG_TAG_INTERNAL must not be defined"
+#endif
+#ifdef LOG_TAG
+#define _LOG_TAG_INTERNAL LOG_TAG
+#else
+#define _LOG_TAG_INTERNAL nullptr
+#endif
+
namespace android {
namespace base {
@@ -201,10 +215,10 @@
// Get an ostream that can be used for logging at the given severity and to the
// given destination. The same notes as for LOG_STREAM apply.
-#define LOG_STREAM_TO(dest, severity) \
- ::android::base::LogMessage(__FILE__, __LINE__, \
- ::android::base::dest, \
- SEVERITY_LAMBDA(severity), -1).stream()
+#define LOG_STREAM_TO(dest, severity) \
+ ::android::base::LogMessage(__FILE__, __LINE__, ::android::base::dest, \
+ SEVERITY_LAMBDA(severity), _LOG_TAG_INTERNAL, -1) \
+ .stream()
// Logs a message to logcat on Android otherwise to stderr. If the severity is
// FATAL it also causes an abort. For example:
@@ -231,10 +245,10 @@
#define PLOG(severity) PLOG_TO(DEFAULT, severity)
// Behaves like PLOG, but logs to the specified log ID.
-#define PLOG_TO(dest, severity) \
- LOGGING_PREAMBLE(severity) && \
- ::android::base::LogMessage(__FILE__, __LINE__, ::android::base::dest, \
- SEVERITY_LAMBDA(severity), errno) \
+#define PLOG_TO(dest, severity) \
+ LOGGING_PREAMBLE(severity) && \
+ ::android::base::LogMessage(__FILE__, __LINE__, ::android::base::dest, \
+ SEVERITY_LAMBDA(severity), _LOG_TAG_INTERNAL, errno) \
.stream()
// Marker that code is yet to be implemented.
@@ -247,23 +261,26 @@
//
// CHECK(false == true) results in a log message of
// "Check failed: false == true".
-#define CHECK(x) \
- LIKELY((x)) || ABORT_AFTER_LOG_FATAL_EXPR(false) || \
- ::android::base::LogMessage( \
- __FILE__, __LINE__, ::android::base::DEFAULT, ::android::base::FATAL, \
- -1).stream() \
+#define CHECK(x) \
+ LIKELY((x)) || ABORT_AFTER_LOG_FATAL_EXPR(false) || \
+ ::android::base::LogMessage(__FILE__, __LINE__, ::android::base::DEFAULT, \
+ ::android::base::FATAL, _LOG_TAG_INTERNAL, -1) \
+ .stream() \
<< "Check failed: " #x << " "
+// clang-format off
// Helper for CHECK_xx(x,y) macros.
-#define CHECK_OP(LHS, RHS, OP) \
- for (auto _values = ::android::base::MakeEagerEvaluator(LHS, RHS); \
- UNLIKELY(!(_values.lhs OP _values.rhs)); \
- /* empty */) \
- ABORT_AFTER_LOG_FATAL \
- ::android::base::LogMessage(__FILE__, __LINE__, ::android::base::DEFAULT, \
- ::android::base::FATAL, -1).stream() \
- << "Check failed: " << #LHS << " " << #OP << " " << #RHS \
- << " (" #LHS "=" << _values.lhs << ", " #RHS "=" << _values.rhs << ") "
+#define CHECK_OP(LHS, RHS, OP) \
+ for (auto _values = ::android::base::MakeEagerEvaluator(LHS, RHS); \
+ UNLIKELY(!(_values.lhs OP _values.rhs)); \
+ /* empty */) \
+ ABORT_AFTER_LOG_FATAL \
+ ::android::base::LogMessage(__FILE__, __LINE__, ::android::base::DEFAULT, \
+ ::android::base::FATAL, _LOG_TAG_INTERNAL, -1) \
+ .stream() \
+ << "Check failed: " << #LHS << " " << #OP << " " << #RHS << " (" #LHS "=" << _values.lhs \
+ << ", " #RHS "=" << _values.rhs << ") "
+// clang-format on
// Check whether a condition holds between x and y, LOG(FATAL) if not. The value
// of the expressions x and y is evaluated once. Extra logging can be appended
@@ -278,14 +295,17 @@
#define CHECK_GE(x, y) CHECK_OP(x, y, >= )
#define CHECK_GT(x, y) CHECK_OP(x, y, > )
+// clang-format off
// Helper for CHECK_STRxx(s1,s2) macros.
#define CHECK_STROP(s1, s2, sense) \
while (UNLIKELY((strcmp(s1, s2) == 0) != (sense))) \
ABORT_AFTER_LOG_FATAL \
::android::base::LogMessage(__FILE__, __LINE__, ::android::base::DEFAULT, \
- ::android::base::FATAL, -1).stream() \
+ ::android::base::FATAL, _LOG_TAG_INTERNAL, -1) \
+ .stream() \
<< "Check failed: " << "\"" << (s1) << "\"" \
<< ((sense) ? " == " : " != ") << "\"" << (s2) << "\""
+// clang-format on
// Check for string (const char*) equality between s1 and s2, LOG(FATAL) if not.
#define CHECK_STREQ(s1, s2) CHECK_STROP(s1, s2, true)
@@ -400,8 +420,8 @@
// of a CHECK. The destructor will abort if the severity is FATAL.
class LogMessage {
public:
- LogMessage(const char* file, unsigned int line, LogId id,
- LogSeverity severity, int error);
+ LogMessage(const char* file, unsigned int line, LogId id, LogSeverity severity, const char* tag,
+ int error);
~LogMessage();
@@ -410,12 +430,17 @@
std::ostream& stream();
// The routine that performs the actual logging.
- static void LogLine(const char* file, unsigned int line, LogId id,
- LogSeverity severity, const char* msg);
+ static void LogLine(const char* file, unsigned int line, LogId id, LogSeverity severity,
+ const char* tag, const char* msg);
private:
const std::unique_ptr<LogMessageData> data_;
+ // TODO(b/35361699): remove these symbols once all prebuilds stop using it.
+ LogMessage(const char* file, unsigned int line, LogId id, LogSeverity severity, int error);
+ static void LogLine(const char* file, unsigned int line, LogId id, LogSeverity severity,
+ const char* msg);
+
DISALLOW_COPY_AND_ASSIGN(LogMessage);
};
diff --git a/base/logging.cpp b/base/logging.cpp
index 75078e5..0f2012a 100644
--- a/base/logging.cpp
+++ b/base/logging.cpp
@@ -187,8 +187,8 @@
}
#endif
-void StderrLogger(LogId, LogSeverity severity, const char*, const char* file,
- unsigned int line, const char* message) {
+void StderrLogger(LogId, LogSeverity severity, const char* tag, const char* file, unsigned int line,
+ const char* message) {
struct tm now;
time_t t = time(nullptr);
@@ -205,8 +205,8 @@
static_assert(arraysize(log_characters) - 1 == FATAL + 1,
"Mismatch in size of log_characters and values in LogSeverity");
char severity_char = log_characters[severity];
- fprintf(stderr, "%s %c %s %5d %5d %s:%u] %s\n", ProgramInvocationName().c_str(),
- severity_char, timestamp, getpid(), GetThreadId(), file, line, message);
+ fprintf(stderr, "%s %c %s %5d %5d %s:%u] %s\n", tag ? tag : "nullptr", severity_char, timestamp,
+ getpid(), GetThreadId(), file, line, message);
}
void DefaultAborter(const char* abort_message) {
@@ -344,14 +344,14 @@
// checks/logging in a function.
class LogMessageData {
public:
- LogMessageData(const char* file, unsigned int line, LogId id,
- LogSeverity severity, int error)
+ LogMessageData(const char* file, unsigned int line, LogId id, LogSeverity severity,
+ const char* tag, int error)
: file_(GetFileBasename(file)),
line_number_(line),
id_(id),
severity_(severity),
- error_(error) {
- }
+ tag_(tag),
+ error_(error) {}
const char* GetFile() const {
return file_;
@@ -365,6 +365,8 @@
return severity_;
}
+ const char* GetTag() const { return tag_; }
+
LogId GetId() const {
return id_;
}
@@ -387,15 +389,19 @@
const unsigned int line_number_;
const LogId id_;
const LogSeverity severity_;
+ const char* const tag_;
const int error_;
DISALLOW_COPY_AND_ASSIGN(LogMessageData);
};
-LogMessage::LogMessage(const char* file, unsigned int line, LogId id,
- LogSeverity severity, int error)
- : data_(new LogMessageData(file, line, id, severity, error)) {
-}
+LogMessage::LogMessage(const char* file, unsigned int line, LogId id, LogSeverity severity,
+ const char* tag, int error)
+ : data_(new LogMessageData(file, line, id, severity, tag, error)) {}
+
+LogMessage::LogMessage(const char* file, unsigned int line, LogId id, LogSeverity severity,
+ int error)
+ : LogMessage(file, line, id, severity, nullptr, error) {}
LogMessage::~LogMessage() {
// Check severity again. This is duplicate work wrt/ LOG macros, but not LOG_STREAM.
@@ -413,16 +419,16 @@
// Do the actual logging with the lock held.
std::lock_guard<std::mutex> lock(LoggingLock());
if (msg.find('\n') == std::string::npos) {
- LogLine(data_->GetFile(), data_->GetLineNumber(), data_->GetId(),
- data_->GetSeverity(), msg.c_str());
+ LogLine(data_->GetFile(), data_->GetLineNumber(), data_->GetId(), data_->GetSeverity(),
+ data_->GetTag(), msg.c_str());
} else {
msg += '\n';
size_t i = 0;
while (i < msg.size()) {
size_t nl = msg.find('\n', i);
msg[nl] = '\0';
- LogLine(data_->GetFile(), data_->GetLineNumber(), data_->GetId(),
- data_->GetSeverity(), &msg[i]);
+ LogLine(data_->GetFile(), data_->GetLineNumber(), data_->GetId(), data_->GetSeverity(),
+ data_->GetTag(), &msg[i]);
// Undo the zero-termination so we can give the complete message to the aborter.
msg[nl] = '\n';
i = nl + 1;
@@ -440,12 +446,17 @@
return data_->GetBuffer();
}
-void LogMessage::LogLine(const char* file, unsigned int line, LogId id,
- LogSeverity severity, const char* message) {
- const char* tag = ProgramInvocationName().c_str();
+void LogMessage::LogLine(const char* file, unsigned int line, LogId id, LogSeverity severity,
+ const char* tag, const char* message) {
+ if (tag == nullptr) tag = ProgramInvocationName().c_str();
Logger()(id, severity, tag, file, line, message);
}
+void LogMessage::LogLine(const char* file, unsigned int line, LogId id, LogSeverity severity,
+ const char* message) {
+ LogLine(file, line, id, severity, nullptr, message);
+}
+
LogSeverity GetMinimumLogSeverity() {
return gMinimumLogSeverity;
}
diff --git a/libunwindstack/Android.bp b/libunwindstack/Android.bp
index fad899f..133f3b9 100644
--- a/libunwindstack/Android.bp
+++ b/libunwindstack/Android.bp
@@ -215,6 +215,15 @@
],
}
+cc_binary {
+ name: "unwind_for_offline",
+ defaults: ["libunwindstack_tools"],
+
+ srcs: [
+ "tools/unwind_for_offline.cpp",
+ ],
+}
+
// Generates the elf data for use in the tests for .gnu_debugdata frames.
// Once these files are generated, use the xz command to compress the data.
cc_binary_host {
diff --git a/libunwindstack/Memory.cpp b/libunwindstack/Memory.cpp
index 1f3c6c3..285f879 100644
--- a/libunwindstack/Memory.cpp
+++ b/libunwindstack/Memory.cpp
@@ -35,10 +35,6 @@
namespace unwindstack {
static size_t ProcessVmRead(pid_t pid, uint64_t remote_src, void* dst, size_t len) {
- struct iovec dst_iov = {
- .iov_base = dst,
- .iov_len = len,
- };
// Split up the remote read across page boundaries.
// From the manpage:
@@ -49,39 +45,49 @@
// perform a partial transfer that splits a single iovec element.
constexpr size_t kMaxIovecs = 64;
struct iovec src_iovs[kMaxIovecs];
- size_t iovecs_used = 0;
uint64_t cur = remote_src;
+ size_t total_read = 0;
while (len > 0) {
- if (iovecs_used == kMaxIovecs) {
- errno = EINVAL;
- return 0;
+ struct iovec dst_iov = {
+ .iov_base = &reinterpret_cast<uint8_t*>(dst)[total_read], .iov_len = len,
+ };
+
+ size_t iovecs_used = 0;
+ while (len > 0) {
+ if (iovecs_used == kMaxIovecs) {
+ break;
+ }
+
+ // struct iovec uses void* for iov_base.
+ if (cur >= UINTPTR_MAX) {
+ errno = EFAULT;
+ return total_read;
+ }
+
+ src_iovs[iovecs_used].iov_base = reinterpret_cast<void*>(cur);
+
+ uintptr_t misalignment = cur & (getpagesize() - 1);
+ size_t iov_len = getpagesize() - misalignment;
+ iov_len = std::min(iov_len, len);
+
+ len -= iov_len;
+ if (__builtin_add_overflow(cur, iov_len, &cur)) {
+ errno = EFAULT;
+ return total_read;
+ }
+
+ src_iovs[iovecs_used].iov_len = iov_len;
+ ++iovecs_used;
}
- // struct iovec uses void* for iov_base.
- if (cur >= UINTPTR_MAX) {
- errno = EFAULT;
- return 0;
+ ssize_t rc = process_vm_readv(pid, &dst_iov, 1, src_iovs, iovecs_used, 0);
+ if (rc == -1) {
+ return total_read;
}
-
- src_iovs[iovecs_used].iov_base = reinterpret_cast<void*>(cur);
-
- uintptr_t misalignment = cur & (getpagesize() - 1);
- size_t iov_len = getpagesize() - misalignment;
- iov_len = std::min(iov_len, len);
-
- len -= iov_len;
- if (__builtin_add_overflow(cur, iov_len, &cur)) {
- errno = EFAULT;
- return 0;
- }
-
- src_iovs[iovecs_used].iov_len = iov_len;
- ++iovecs_used;
+ total_read += rc;
}
-
- ssize_t rc = process_vm_readv(pid, &dst_iov, 1, src_iovs, iovecs_used, 0);
- return rc == -1 ? 0 : rc;
+ return total_read;
}
static bool PtraceReadLong(pid_t pid, uint64_t addr, long* value) {
diff --git a/libunwindstack/tests/MemoryRemoteTest.cpp b/libunwindstack/tests/MemoryRemoteTest.cpp
index f5492a2..fb56e8a 100644
--- a/libunwindstack/tests/MemoryRemoteTest.cpp
+++ b/libunwindstack/tests/MemoryRemoteTest.cpp
@@ -79,6 +79,35 @@
ASSERT_TRUE(Detach(pid));
}
+TEST_F(MemoryRemoteTest, read_large) {
+ static constexpr size_t kTotalPages = 245;
+ std::vector<uint8_t> src(kTotalPages * getpagesize());
+ for (size_t i = 0; i < kTotalPages; i++) {
+ memset(&src[i * getpagesize()], i, getpagesize());
+ }
+
+ pid_t pid;
+ if ((pid = fork()) == 0) {
+ while (true)
+ ;
+ exit(1);
+ }
+ ASSERT_LT(0, pid);
+ TestScopedPidReaper reap(pid);
+
+ ASSERT_TRUE(Attach(pid));
+
+ MemoryRemote remote(pid);
+
+ std::vector<uint8_t> dst(kTotalPages * getpagesize());
+ ASSERT_TRUE(remote.ReadFully(reinterpret_cast<uint64_t>(src.data()), dst.data(), src.size()));
+ for (size_t i = 0; i < kTotalPages * getpagesize(); i++) {
+ ASSERT_EQ(i / getpagesize(), dst[i]) << "Failed at byte " << i;
+ }
+
+ ASSERT_TRUE(Detach(pid));
+}
+
TEST_F(MemoryRemoteTest, read_partial) {
char* mapping = static_cast<char*>(
mmap(nullptr, 4 * getpagesize(), PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0));
diff --git a/libunwindstack/tools/unwind_for_offline.cpp b/libunwindstack/tools/unwind_for_offline.cpp
new file mode 100644
index 0000000..d64ef8f
--- /dev/null
+++ b/libunwindstack/tools/unwind_for_offline.cpp
@@ -0,0 +1,262 @@
+/*
+ * Copyright (C) 2017 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.
+ */
+
+#define _GNU_SOURCE 1
+#include <errno.h>
+#include <inttypes.h>
+#include <signal.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/ptrace.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <algorithm>
+#include <memory>
+#include <string>
+#include <unordered_map>
+#include <vector>
+
+#include <unwindstack/Elf.h>
+#include <unwindstack/Maps.h>
+#include <unwindstack/Memory.h>
+#include <unwindstack/Regs.h>
+#include <unwindstack/Unwinder.h>
+
+#include <android-base/stringprintf.h>
+
+struct map_info_t {
+ uint64_t start;
+ uint64_t end;
+ uint64_t offset;
+ std::string name;
+};
+
+static bool Attach(pid_t pid) {
+ if (ptrace(PTRACE_ATTACH, pid, 0, 0) == -1) {
+ return false;
+ }
+
+ // Allow at least 1 second to attach properly.
+ for (size_t i = 0; i < 1000; i++) {
+ siginfo_t si;
+ if (ptrace(PTRACE_GETSIGINFO, pid, 0, &si) == 0) {
+ return true;
+ }
+ usleep(1000);
+ }
+ printf("%d: Failed to stop.\n", pid);
+ return false;
+}
+
+bool SaveRegs(unwindstack::Regs* regs) {
+ std::unique_ptr<FILE, decltype(&fclose)> fp(fopen("regs.txt", "w+"), &fclose);
+ if (fp == nullptr) {
+ printf("Failed to create file regs.txt.\n");
+ return false;
+ }
+ regs->IterateRegisters([&fp](const char* name, uint64_t value) {
+ fprintf(fp.get(), "%s: %" PRIx64 "\n", name, value);
+ });
+
+ return true;
+}
+
+bool SaveStack(pid_t pid, uint64_t sp_start, uint64_t sp_end) {
+ std::unique_ptr<FILE, decltype(&fclose)> fp(fopen("stack.data", "w+"), &fclose);
+ if (fp == nullptr) {
+ printf("Failed to create stack.data.\n");
+ return false;
+ }
+
+ size_t bytes = fwrite(&sp_start, 1, sizeof(sp_start), fp.get());
+ if (bytes != sizeof(sp_start)) {
+ perror("Failed to write all data.");
+ return false;
+ }
+
+ std::vector<uint8_t> buffer(sp_end - sp_start);
+ auto process_memory = unwindstack::Memory::CreateProcessMemory(pid);
+ if (!process_memory->Read(sp_start, buffer.data(), buffer.size())) {
+ printf("Unable to read stack data.\n");
+ return false;
+ }
+
+ bytes = fwrite(buffer.data(), 1, buffer.size(), fp.get());
+ if (bytes != buffer.size()) {
+ printf("Failed to write all stack data: stack size %zu, written %zu\n", buffer.size(), bytes);
+ return 1;
+ }
+
+ return true;
+}
+
+bool CreateElfFromMemory(std::shared_ptr<unwindstack::Memory>& memory, map_info_t* info) {
+ std::string cur_name;
+ if (info->name.empty()) {
+ cur_name = android::base::StringPrintf("anonymous:%" PRIx64, info->start);
+ } else {
+ cur_name = basename(info->name.c_str());
+ cur_name = android::base::StringPrintf("%s:%" PRIx64, basename(info->name.c_str()), info->start);
+ }
+
+ std::unique_ptr<FILE, decltype(&fclose)> output(fopen(cur_name.c_str(), "w+"), &fclose);
+ if (output == nullptr) {
+ printf("Cannot create %s\n", cur_name.c_str());
+ return false;
+ }
+ std::vector<uint8_t> buffer(info->end - info->start);
+ // If this is a mapped in file, it might not be possible to read the entire
+ // map, so read all that is readable.
+ size_t bytes = memory->Read(info->start, buffer.data(), buffer.size());
+ if (bytes == 0) {
+ printf("Cannot read data from address %" PRIx64 " length %zu\n", info->start, buffer.size());
+ return false;
+ }
+ size_t bytes_written = fwrite(buffer.data(), 1, bytes, output.get());
+ if (bytes_written != bytes) {
+ printf("Failed to write all data to file: bytes read %zu, written %zu\n", bytes, bytes_written);
+ return false;
+ }
+
+ // Replace the name with the new name.
+ info->name = cur_name;
+
+ return true;
+}
+
+bool CopyElfFromFile(map_info_t* info) {
+ std::unique_ptr<FILE, decltype(&fclose)> fp(fopen(info->name.c_str(), "r"), &fclose);
+ if (fp == nullptr) {
+ return false;
+ }
+
+ std::string cur_name = basename(info->name.c_str());
+ std::unique_ptr<FILE, decltype(&fclose)> output(fopen(cur_name.c_str(), "w+"), &fclose);
+ if (output == nullptr) {
+ printf("Cannot create file %s\n", cur_name.c_str());
+ return false;
+ }
+ std::vector<uint8_t> buffer(10000);
+ size_t bytes;
+ while ((bytes = fread(buffer.data(), 1, buffer.size(), fp.get())) > 0) {
+ size_t bytes_written = fwrite(buffer.data(), 1, bytes, output.get());
+ if (bytes_written != bytes) {
+ printf("Bytes written doesn't match bytes read: read %zu, written %zu\n", bytes,
+ bytes_written);
+ return false;
+ }
+ }
+
+ // Replace the name with the new name.
+ info->name = cur_name;
+
+ return true;
+}
+
+int SaveData(pid_t pid) {
+ unwindstack::Regs* regs = unwindstack::Regs::RemoteGet(pid);
+ if (regs == nullptr) {
+ printf("Unable to get remote reg data.\n");
+ return 1;
+ }
+
+ unwindstack::RemoteMaps maps(pid);
+ if (!maps.Parse()) {
+ printf("Unable to parse maps.\n");
+ return 1;
+ }
+
+ // Save the current state of the registers.
+ if (!SaveRegs(regs)) {
+ return 1;
+ }
+
+ // Do an unwind so we know how much of the stack to save, and what
+ // elf files are involved.
+ uint64_t sp = regs->sp();
+ auto process_memory = unwindstack::Memory::CreateProcessMemory(pid);
+ unwindstack::Unwinder unwinder(1024, &maps, regs, process_memory);
+ unwinder.Unwind();
+
+ std::unordered_map<uint64_t, map_info_t> maps_by_start;
+ uint64_t last_sp;
+ for (auto frame : unwinder.frames()) {
+ last_sp = frame.sp;
+ if (maps_by_start.count(frame.map_start) == 0) {
+ auto info = &maps_by_start[frame.map_start];
+ info->start = frame.map_start;
+ info->end = frame.map_end;
+ info->offset = frame.map_offset;
+ info->name = frame.map_name;
+ if (!CopyElfFromFile(info)) {
+ // Try to create the elf from memory, this will handle cases where
+ // the data only exists in memory such as vdso data on x86.
+ if (!CreateElfFromMemory(process_memory, info)) {
+ return 1;
+ }
+ }
+ }
+ }
+
+ if (!SaveStack(pid, sp, last_sp)) {
+ return 1;
+ }
+
+ std::vector<std::pair<uint64_t, map_info_t>> sorted_maps(maps_by_start.begin(),
+ maps_by_start.end());
+ std::sort(sorted_maps.begin(), sorted_maps.end(),
+ [](auto& a, auto& b) { return a.first < b.first; });
+
+ std::unique_ptr<FILE, decltype(&fclose)> fp(fopen("maps.txt", "w+"), &fclose);
+ if (fp == nullptr) {
+ printf("Failed to create maps.txt.\n");
+ return false;
+ }
+
+ for (auto& element : sorted_maps) {
+ map_info_t& map = element.second;
+ fprintf(fp.get(), "%" PRIx64 "-%" PRIx64 " r-xp %" PRIx64 " 00:00 0", map.start, map.end,
+ map.offset);
+ if (!map.name.empty()) {
+ fprintf(fp.get(), " %s", map.name.c_str());
+ }
+ fprintf(fp.get(), "\n");
+ }
+
+ return 0;
+}
+
+int main(int argc, char** argv) {
+ if (argc != 2) {
+ printf("Usage: unwind_for_offline <PID>\n");
+ return 1;
+ }
+
+ pid_t pid = atoi(argv[1]);
+ if (!Attach(pid)) {
+ printf("Failed to attach to pid %d: %s\n", pid, strerror(errno));
+ return 1;
+ }
+
+ int return_code = SaveData(pid);
+
+ ptrace(PTRACE_DETACH, pid, 0, 0);
+
+ return return_code;
+}
diff --git a/libusbhost/include/usbhost/usbhost.h b/libusbhost/include/usbhost/usbhost.h
index a8dd673..9758b18 100644
--- a/libusbhost/include/usbhost/usbhost.h
+++ b/libusbhost/include/usbhost/usbhost.h
@@ -140,8 +140,26 @@
const struct usb_device_descriptor* usb_device_get_device_descriptor(struct usb_device *device);
/* Returns a USB descriptor string for the given string ID.
+ * Return value: < 0 on error. 0 on success.
+ * The string is returned in ucs2_out in USB-native UCS-2 encoding.
+ *
+ * parameters:
+ * id - the string descriptor index.
+ * timeout - in milliseconds (see Documentation/driver-api/usb/usb.rst)
+ * ucs2_out - Must point to null on call.
+ * Will be filled in with a buffer on success.
+ * If this is non-null on return, it must be free()d.
+ * response_size - size, in bytes, of ucs-2 string in ucs2_out.
+ * The size isn't guaranteed to include null termination.
+ * Call free() to free the result when you are done with it.
+ */
+int usb_device_get_string_ucs2(struct usb_device* device, int id, int timeout, void** ucs2_out,
+ size_t* response_size);
+
+/* Returns a USB descriptor string for the given string ID.
* Used to implement usb_device_get_manufacturer_name,
* usb_device_get_product_name and usb_device_get_serial.
+ * Returns ascii - non ascii characters will be replaced with '?'.
* Call free() to free the result when you are done with it.
*/
char* usb_device_get_string(struct usb_device *device, int id, int timeout);
diff --git a/libusbhost/usbhost.c b/libusbhost/usbhost.c
index 4d286bf..fa0191b 100644
--- a/libusbhost/usbhost.c
+++ b/libusbhost/usbhost.c
@@ -464,17 +464,30 @@
return (struct usb_device_descriptor*)device->desc;
}
-char* usb_device_get_string(struct usb_device *device, int id, int timeout)
-{
- char string[256];
- __u16 buffer[MAX_STRING_DESCRIPTOR_LENGTH / sizeof(__u16)];
+/* Returns a USB descriptor string for the given string ID.
+ * Return value: < 0 on error. 0 on success.
+ * The string is returned in ucs2_out in USB-native UCS-2 encoding.
+ *
+ * parameters:
+ * id - the string descriptor index.
+ * timeout - in milliseconds (see Documentation/driver-api/usb/usb.rst)
+ * ucs2_out - Must point to null on call.
+ * Will be filled in with a buffer on success.
+ * If this is non-null on return, it must be free()d.
+ * response_size - size, in bytes, of ucs-2 string in ucs2_out.
+ * The size isn't guaranteed to include null termination.
+ * Call free() to free the result when you are done with it.
+ */
+int usb_device_get_string_ucs2(struct usb_device* device, int id, int timeout, void** ucs2_out,
+ size_t* response_size) {
__u16 languages[MAX_STRING_DESCRIPTOR_LENGTH / sizeof(__u16)];
- int i, result;
+ char response[MAX_STRING_DESCRIPTOR_LENGTH];
+ int result;
int languageCount = 0;
- if (id == 0) return NULL;
+ if (id == 0) return -1;
+ if (*ucs2_out != NULL) return -1;
- string[0] = 0;
memset(languages, 0, sizeof(languages));
// read list of supported languages
@@ -485,25 +498,54 @@
if (result > 0)
languageCount = (result - 2) / 2;
- for (i = 1; i <= languageCount; i++) {
- memset(buffer, 0, sizeof(buffer));
+ for (int i = 1; i <= languageCount; i++) {
+ memset(response, 0, sizeof(response));
- result = usb_device_control_transfer(device,
- USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_DEVICE, USB_REQ_GET_DESCRIPTOR,
- (USB_DT_STRING << 8) | id, languages[i], buffer, sizeof(buffer),
- timeout);
- if (result > 0) {
- int i;
- // skip first word, and copy the rest to the string, changing shorts to bytes.
- result /= 2;
- for (i = 1; i < result; i++)
- string[i - 1] = buffer[i];
- string[i - 1] = 0;
- return strdup(string);
+ result = usb_device_control_transfer(
+ device, USB_DIR_IN | USB_TYPE_STANDARD | USB_RECIP_DEVICE, USB_REQ_GET_DESCRIPTOR,
+ (USB_DT_STRING << 8) | id, languages[i], response, sizeof(response), timeout);
+ if (result >= 2) { // string contents begin at offset 2.
+ int descriptor_len = result - 2;
+ char* out = malloc(descriptor_len + 3);
+ if (out == NULL) {
+ return -1;
+ }
+ memcpy(out, response + 2, descriptor_len);
+ // trail with three additional NULLs, so that there's guaranteed
+ // to be a UCS-2 NULL character beyond whatever USB returned.
+ // The returned string length is still just what USB returned.
+ memset(out + descriptor_len, '\0', 3);
+ *ucs2_out = (void*)out;
+ *response_size = descriptor_len;
+ return 0;
}
}
+ return -1;
+}
- return NULL;
+/* Warning: previously this blindly returned the lower 8 bits of
+ * every UCS-2 character in a USB descriptor. Now it will replace
+ * values > 127 with ascii '?'.
+ */
+char* usb_device_get_string(struct usb_device* device, int id, int timeout) {
+ char* ascii_string = NULL;
+ size_t raw_string_len = 0;
+ size_t i;
+ if (usb_device_get_string_ucs2(device, id, timeout, (void**)&ascii_string, &raw_string_len) < 0)
+ return NULL;
+ if (ascii_string == NULL) return NULL;
+ for (i = 0; i < raw_string_len / 2; ++i) {
+ // wire format for USB is always little-endian.
+ char lower = ascii_string[2 * i];
+ char upper = ascii_string[2 * i + 1];
+ if (upper || (lower & 0x80)) {
+ ascii_string[i] = '?';
+ } else {
+ ascii_string[i] = lower;
+ }
+ }
+ ascii_string[i] = '\0';
+ return ascii_string;
}
char* usb_device_get_manufacturer_name(struct usb_device *device, int timeout)
diff --git a/rootdir/etc/ld.config.txt.in b/rootdir/etc/ld.config.txt.in
index df26f90..70363569 100644
--- a/rootdir/etc/ld.config.txt.in
+++ b/rootdir/etc/ld.config.txt.in
@@ -218,7 +218,7 @@
# (LL-NDK only) access.
###############################################################################
[vendor]
-additional.namespaces = system
+additional.namespaces = system,vndk
###############################################################################
# "default" namespace
@@ -261,10 +261,39 @@
namespace.default.asan.permitted.paths += /data/asan/vendor
namespace.default.asan.permitted.paths += /vendor
-namespace.default.links = system
-namespace.default.link.system.shared_libs = %LLNDK_LIBRARIES%
-namespace.default.link.system.shared_libs += %VNDK_SAMEPROCESS_LIBRARIES%
-namespace.default.link.system.shared_libs += %VNDK_CORE_LIBRARIES%
+namespace.default.links = system,vndk
+namespace.default.link.system.shared_libs = %LLNDK_LIBRARIES%
+namespace.default.link.vndk.shared_libs = %VNDK_SAMEPROCESS_LIBRARIES%
+namespace.default.link.vndk.shared_libs += %VNDK_CORE_LIBRARIES%
+
+###############################################################################
+# "vndk" namespace
+#
+# This namespace is where VNDK and VNDK-SP libraries are loaded for
+# a vendor process.
+###############################################################################
+namespace.vndk.isolated = false
+
+namespace.vndk.search.paths = /system/${LIB}/vndk-sp${VNDK_VER}
+namespace.vndk.search.paths += /system/${LIB}/vndk${VNDK_VER}
+
+# This is exceptionally required since android.hidl.memory@1.0-impl.so is here
+namespace.vndk.permitted.paths = /system/${LIB}/vndk-sp${VNDK_VER}/hw
+
+namespace.vndk.asan.permitted.paths += /data/asan/system/${LIB}/vndk-sp${VNDK_VER}/hw
+namespace.vndk.asan.permitted.paths += /system/${LIB}/vndk-sp${VNDK_VER}/hw
+
+namespace.vndk.asan.search.paths = /data/asan/system/${LIB}/vndk-sp${VNDK_VER}
+namespace.vndk.asan.search.paths += /system/${LIB}/vndk-sp${VNDK_VER}
+namespace.vndk.asan.search.paths += /data/asan/system/${LIB}/vndk${VNDK_VER}
+namespace.vndk.asan.search.paths += /system/${LIB}/vndk${VNDK_VER}
+
+# When these NDK libs are required inside this namespace, then it is redirected
+# to the system namespace. This is possible since their ABI is stable across
+# Android releases.
+namespace.vndk.links = system
+namespace.vndk.link.system.shared_libs = %LLNDK_LIBRARIES%
+namespace.vndk.link.system.shared_libs += %SANITIZER_RUNTIME_LIBRARIES%
###############################################################################
# "system" namespace
@@ -274,13 +303,7 @@
###############################################################################
namespace.system.isolated = false
-namespace.system.search.paths = /system/${LIB}/vndk-sp${VNDK_VER}
-namespace.system.search.paths += /system/${LIB}/vndk${VNDK_VER}
-namespace.system.search.paths += /system/${LIB}
+namespace.system.search.paths = /system/${LIB}
-namespace.system.asan.search.paths = /data/asan/system/${LIB}/vndk-sp${VNDK_VER}
-namespace.system.asan.search.paths += /system/${LIB}/vndk-sp${VNDK_VER}
-namespace.system.asan.search.paths += /data/asan/system/${LIB}/vndk${VNDK_VER}
-namespace.system.asan.search.paths += /system/${LIB}/vndk${VNDK_VER}
-namespace.system.asan.search.paths += /data/asan/system/${LIB}
+namespace.system.asan.search.paths = /data/asan/system/${LIB}
namespace.system.asan.search.paths += /system/${LIB}