recovery: Switch applypatch/ and updater/ to cpp.
Mostly trivial changes to make cpp compiler happy.
Change-Id: I69bd1d96fcccf506007f6144faf37e11cfba1270
diff --git a/updater/install.cpp b/updater/install.cpp
new file mode 100644
index 0000000..422a1bb
--- /dev/null
+++ b/updater/install.cpp
@@ -0,0 +1,1622 @@
+/*
+ * Copyright (C) 2009 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 <ctype.h>
+#include <errno.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/mount.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <time.h>
+#include <selinux/selinux.h>
+#include <ftw.h>
+#include <sys/capability.h>
+#include <sys/xattr.h>
+#include <linux/xattr.h>
+#include <inttypes.h>
+
+#include "bootloader.h"
+#include "applypatch/applypatch.h"
+#include "cutils/android_reboot.h"
+#include "cutils/misc.h"
+#include "cutils/properties.h"
+#include "edify/expr.h"
+#include "mincrypt/sha.h"
+#include "minzip/DirUtil.h"
+#include "mtdutils/mounts.h"
+#include "mtdutils/mtdutils.h"
+#include "updater.h"
+#include "install.h"
+#include "tune2fs.h"
+
+#ifdef USE_EXT4
+#include "make_ext4fs.h"
+#include "wipe.h"
+#endif
+
+void uiPrint(State* state, char* buffer) {
+ char* line = strtok(buffer, "\n");
+ UpdaterInfo* ui = (UpdaterInfo*)(state->cookie);
+ while (line) {
+ fprintf(ui->cmd_pipe, "ui_print %s\n", line);
+ line = strtok(NULL, "\n");
+ }
+ fprintf(ui->cmd_pipe, "ui_print\n");
+
+ // The recovery will only print the contents to screen for pipe command
+ // ui_print. We need to dump the contents to stderr (which has been
+ // redirected to the log file) directly.
+ fprintf(stderr, "%s", buffer);
+}
+
+__attribute__((__format__(printf, 2, 3))) __nonnull((2))
+void uiPrintf(State* state, const char* format, ...) {
+ char error_msg[1024];
+ va_list ap;
+ va_start(ap, format);
+ vsnprintf(error_msg, sizeof(error_msg), format, ap);
+ va_end(ap);
+ uiPrint(state, error_msg);
+}
+
+// Take a sha-1 digest and return it as a newly-allocated hex string.
+char* PrintSha1(const uint8_t* digest) {
+ char* buffer = reinterpret_cast<char*>(malloc(SHA_DIGEST_SIZE*2 + 1));
+ const char* alphabet = "0123456789abcdef";
+ size_t i;
+ for (i = 0; i < SHA_DIGEST_SIZE; ++i) {
+ buffer[i*2] = alphabet[(digest[i] >> 4) & 0xf];
+ buffer[i*2+1] = alphabet[digest[i] & 0xf];
+ }
+ buffer[i*2] = '\0';
+ return buffer;
+}
+
+// mount(fs_type, partition_type, location, mount_point)
+//
+// fs_type="yaffs2" partition_type="MTD" location=partition
+// fs_type="ext4" partition_type="EMMC" location=device
+Value* MountFn(const char* name, State* state, int argc, Expr* argv[]) {
+ char* result = NULL;
+ if (argc != 4 && argc != 5) {
+ return ErrorAbort(state, "%s() expects 4-5 args, got %d", name, argc);
+ }
+ char* fs_type;
+ char* partition_type;
+ char* location;
+ char* mount_point;
+ char* mount_options;
+ bool has_mount_options;
+ if (argc == 5) {
+ has_mount_options = true;
+ if (ReadArgs(state, argv, 5, &fs_type, &partition_type,
+ &location, &mount_point, &mount_options) < 0) {
+ return NULL;
+ }
+ } else {
+ has_mount_options = false;
+ if (ReadArgs(state, argv, 4, &fs_type, &partition_type,
+ &location, &mount_point) < 0) {
+ return NULL;
+ }
+ }
+
+ if (strlen(fs_type) == 0) {
+ ErrorAbort(state, "fs_type argument to %s() can't be empty", name);
+ goto done;
+ }
+ if (strlen(partition_type) == 0) {
+ ErrorAbort(state, "partition_type argument to %s() can't be empty",
+ name);
+ goto done;
+ }
+ if (strlen(location) == 0) {
+ ErrorAbort(state, "location argument to %s() can't be empty", name);
+ goto done;
+ }
+ if (strlen(mount_point) == 0) {
+ ErrorAbort(state, "mount_point argument to %s() can't be empty", name);
+ goto done;
+ }
+
+ {
+ char *secontext = NULL;
+
+ if (sehandle) {
+ selabel_lookup(sehandle, &secontext, mount_point, 0755);
+ setfscreatecon(secontext);
+ }
+
+ mkdir(mount_point, 0755);
+
+ if (secontext) {
+ freecon(secontext);
+ setfscreatecon(NULL);
+ }
+ }
+
+ if (strcmp(partition_type, "MTD") == 0) {
+ mtd_scan_partitions();
+ const MtdPartition* mtd;
+ mtd = mtd_find_partition_by_name(location);
+ if (mtd == NULL) {
+ uiPrintf(state, "%s: no mtd partition named \"%s\"",
+ name, location);
+ result = strdup("");
+ goto done;
+ }
+ if (mtd_mount_partition(mtd, mount_point, fs_type, 0 /* rw */) != 0) {
+ uiPrintf(state, "mtd mount of %s failed: %s\n",
+ location, strerror(errno));
+ result = strdup("");
+ goto done;
+ }
+ result = mount_point;
+ } else {
+ if (mount(location, mount_point, fs_type,
+ MS_NOATIME | MS_NODEV | MS_NODIRATIME,
+ has_mount_options ? mount_options : "") < 0) {
+ uiPrintf(state, "%s: failed to mount %s at %s: %s\n",
+ name, location, mount_point, strerror(errno));
+ result = strdup("");
+ } else {
+ result = mount_point;
+ }
+ }
+
+done:
+ free(fs_type);
+ free(partition_type);
+ free(location);
+ if (result != mount_point) free(mount_point);
+ if (has_mount_options) free(mount_options);
+ return StringValue(result);
+}
+
+
+// is_mounted(mount_point)
+Value* IsMountedFn(const char* name, State* state, int argc, Expr* argv[]) {
+ char* result = NULL;
+ if (argc != 1) {
+ return ErrorAbort(state, "%s() expects 1 arg, got %d", name, argc);
+ }
+ char* mount_point;
+ if (ReadArgs(state, argv, 1, &mount_point) < 0) {
+ return NULL;
+ }
+ if (strlen(mount_point) == 0) {
+ ErrorAbort(state, "mount_point argument to unmount() can't be empty");
+ goto done;
+ }
+
+ scan_mounted_volumes();
+ {
+ const MountedVolume* vol = find_mounted_volume_by_mount_point(mount_point);
+ if (vol == NULL) {
+ result = strdup("");
+ } else {
+ result = mount_point;
+ }
+ }
+
+done:
+ if (result != mount_point) free(mount_point);
+ return StringValue(result);
+}
+
+
+Value* UnmountFn(const char* name, State* state, int argc, Expr* argv[]) {
+ char* result = NULL;
+ if (argc != 1) {
+ return ErrorAbort(state, "%s() expects 1 arg, got %d", name, argc);
+ }
+ char* mount_point;
+ if (ReadArgs(state, argv, 1, &mount_point) < 0) {
+ return NULL;
+ }
+ if (strlen(mount_point) == 0) {
+ ErrorAbort(state, "mount_point argument to unmount() can't be empty");
+ goto done;
+ }
+
+ scan_mounted_volumes();
+ {
+ const MountedVolume* vol = find_mounted_volume_by_mount_point(mount_point);
+ if (vol == NULL) {
+ uiPrintf(state, "unmount of %s failed; no such volume\n", mount_point);
+ result = strdup("");
+ } else {
+ int ret = unmount_mounted_volume(vol);
+ if (ret != 0) {
+ uiPrintf(state, "unmount of %s failed (%d): %s\n",
+ mount_point, ret, strerror(errno));
+ }
+ result = mount_point;
+ }
+ }
+
+done:
+ if (result != mount_point) free(mount_point);
+ return StringValue(result);
+}
+
+static int exec_cmd(const char* path, char* const argv[]) {
+ int status;
+ pid_t child;
+ if ((child = vfork()) == 0) {
+ execv(path, argv);
+ _exit(-1);
+ }
+ waitpid(child, &status, 0);
+ if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) {
+ printf("%s failed with status %d\n", path, WEXITSTATUS(status));
+ }
+ return WEXITSTATUS(status);
+}
+
+
+// format(fs_type, partition_type, location, fs_size, mount_point)
+//
+// fs_type="yaffs2" partition_type="MTD" location=partition fs_size=<bytes> mount_point=<location>
+// fs_type="ext4" partition_type="EMMC" location=device fs_size=<bytes> mount_point=<location>
+// fs_type="f2fs" partition_type="EMMC" location=device fs_size=<bytes> mount_point=<location>
+// if fs_size == 0, then make fs uses the entire partition.
+// if fs_size > 0, that is the size to use
+// if fs_size < 0, then reserve that many bytes at the end of the partition (not for "f2fs")
+Value* FormatFn(const char* name, State* state, int argc, Expr* argv[]) {
+ char* result = NULL;
+ if (argc != 5) {
+ return ErrorAbort(state, "%s() expects 5 args, got %d", name, argc);
+ }
+ char* fs_type;
+ char* partition_type;
+ char* location;
+ char* fs_size;
+ char* mount_point;
+
+ if (ReadArgs(state, argv, 5, &fs_type, &partition_type, &location, &fs_size, &mount_point) < 0) {
+ return NULL;
+ }
+
+ if (strlen(fs_type) == 0) {
+ ErrorAbort(state, "fs_type argument to %s() can't be empty", name);
+ goto done;
+ }
+ if (strlen(partition_type) == 0) {
+ ErrorAbort(state, "partition_type argument to %s() can't be empty",
+ name);
+ goto done;
+ }
+ if (strlen(location) == 0) {
+ ErrorAbort(state, "location argument to %s() can't be empty", name);
+ goto done;
+ }
+
+ if (strlen(mount_point) == 0) {
+ ErrorAbort(state, "mount_point argument to %s() can't be empty", name);
+ goto done;
+ }
+
+ if (strcmp(partition_type, "MTD") == 0) {
+ mtd_scan_partitions();
+ const MtdPartition* mtd = mtd_find_partition_by_name(location);
+ if (mtd == NULL) {
+ printf("%s: no mtd partition named \"%s\"",
+ name, location);
+ result = strdup("");
+ goto done;
+ }
+ MtdWriteContext* ctx = mtd_write_partition(mtd);
+ if (ctx == NULL) {
+ printf("%s: can't write \"%s\"", name, location);
+ result = strdup("");
+ goto done;
+ }
+ if (mtd_erase_blocks(ctx, -1) == -1) {
+ mtd_write_close(ctx);
+ printf("%s: failed to erase \"%s\"", name, location);
+ result = strdup("");
+ goto done;
+ }
+ if (mtd_write_close(ctx) != 0) {
+ printf("%s: failed to close \"%s\"", name, location);
+ result = strdup("");
+ goto done;
+ }
+ result = location;
+#ifdef USE_EXT4
+ } else if (strcmp(fs_type, "ext4") == 0) {
+ int status = make_ext4fs(location, atoll(fs_size), mount_point, sehandle);
+ if (status != 0) {
+ printf("%s: make_ext4fs failed (%d) on %s",
+ name, status, location);
+ result = strdup("");
+ goto done;
+ }
+ result = location;
+ } else if (strcmp(fs_type, "f2fs") == 0) {
+ char *num_sectors;
+ if (asprintf(&num_sectors, "%lld", atoll(fs_size) / 512) <= 0) {
+ printf("format_volume: failed to create %s command for %s\n", fs_type, location);
+ result = strdup("");
+ goto done;
+ }
+ const char *f2fs_path = "/sbin/mkfs.f2fs";
+ const char* const f2fs_argv[] = {"mkfs.f2fs", "-t", "-d1", location, num_sectors, NULL};
+ int status = exec_cmd(f2fs_path, (char* const*)f2fs_argv);
+ free(num_sectors);
+ if (status != 0) {
+ printf("%s: mkfs.f2fs failed (%d) on %s",
+ name, status, location);
+ result = strdup("");
+ goto done;
+ }
+ result = location;
+#endif
+ } else {
+ printf("%s: unsupported fs_type \"%s\" partition_type \"%s\"",
+ name, fs_type, partition_type);
+ }
+
+done:
+ free(fs_type);
+ free(partition_type);
+ if (result != location) free(location);
+ return StringValue(result);
+}
+
+Value* RenameFn(const char* name, State* state, int argc, Expr* argv[]) {
+ char* result = NULL;
+ if (argc != 2) {
+ return ErrorAbort(state, "%s() expects 2 args, got %d", name, argc);
+ }
+
+ char* src_name;
+ char* dst_name;
+
+ if (ReadArgs(state, argv, 2, &src_name, &dst_name) < 0) {
+ return NULL;
+ }
+ if (strlen(src_name) == 0) {
+ ErrorAbort(state, "src_name argument to %s() can't be empty", name);
+ goto done;
+ }
+ if (strlen(dst_name) == 0) {
+ ErrorAbort(state, "dst_name argument to %s() can't be empty", name);
+ goto done;
+ }
+ if (make_parents(dst_name) != 0) {
+ ErrorAbort(state, "Creating parent of %s failed, error %s",
+ dst_name, strerror(errno));
+ } else if (access(dst_name, F_OK) == 0 && access(src_name, F_OK) != 0) {
+ // File was already moved
+ result = dst_name;
+ } else if (rename(src_name, dst_name) != 0) {
+ ErrorAbort(state, "Rename of %s to %s failed, error %s",
+ src_name, dst_name, strerror(errno));
+ } else {
+ result = dst_name;
+ }
+
+done:
+ free(src_name);
+ if (result != dst_name) free(dst_name);
+ return StringValue(result);
+}
+
+Value* DeleteFn(const char* name, State* state, int argc, Expr* argv[]) {
+ char** paths = reinterpret_cast<char**>(malloc(argc * sizeof(char*)));
+ for (int i = 0; i < argc; ++i) {
+ paths[i] = Evaluate(state, argv[i]);
+ if (paths[i] == NULL) {
+ int j;
+ for (j = 0; j < i; ++i) {
+ free(paths[j]);
+ }
+ free(paths);
+ return NULL;
+ }
+ }
+
+ bool recursive = (strcmp(name, "delete_recursive") == 0);
+
+ int success = 0;
+ for (int i = 0; i < argc; ++i) {
+ if ((recursive ? dirUnlinkHierarchy(paths[i]) : unlink(paths[i])) == 0)
+ ++success;
+ free(paths[i]);
+ }
+ free(paths);
+
+ char buffer[10];
+ sprintf(buffer, "%d", success);
+ return StringValue(strdup(buffer));
+}
+
+
+Value* ShowProgressFn(const char* name, State* state, int argc, Expr* argv[]) {
+ if (argc != 2) {
+ return ErrorAbort(state, "%s() expects 2 args, got %d", name, argc);
+ }
+ char* frac_str;
+ char* sec_str;
+ if (ReadArgs(state, argv, 2, &frac_str, &sec_str) < 0) {
+ return NULL;
+ }
+
+ double frac = strtod(frac_str, NULL);
+ int sec = strtol(sec_str, NULL, 10);
+
+ UpdaterInfo* ui = (UpdaterInfo*)(state->cookie);
+ fprintf(ui->cmd_pipe, "progress %f %d\n", frac, sec);
+
+ free(sec_str);
+ return StringValue(frac_str);
+}
+
+Value* SetProgressFn(const char* name, State* state, int argc, Expr* argv[]) {
+ if (argc != 1) {
+ return ErrorAbort(state, "%s() expects 1 arg, got %d", name, argc);
+ }
+ char* frac_str;
+ if (ReadArgs(state, argv, 1, &frac_str) < 0) {
+ return NULL;
+ }
+
+ double frac = strtod(frac_str, NULL);
+
+ UpdaterInfo* ui = (UpdaterInfo*)(state->cookie);
+ fprintf(ui->cmd_pipe, "set_progress %f\n", frac);
+
+ return StringValue(frac_str);
+}
+
+// package_extract_dir(package_path, destination_path)
+Value* PackageExtractDirFn(const char* name, State* state,
+ int argc, Expr* argv[]) {
+ if (argc != 2) {
+ return ErrorAbort(state, "%s() expects 2 args, got %d", name, argc);
+ }
+ char* zip_path;
+ char* dest_path;
+ if (ReadArgs(state, argv, 2, &zip_path, &dest_path) < 0) return NULL;
+
+ ZipArchive* za = ((UpdaterInfo*)(state->cookie))->package_zip;
+
+ // To create a consistent system image, never use the clock for timestamps.
+ struct utimbuf timestamp = { 1217592000, 1217592000 }; // 8/1/2008 default
+
+ bool success = mzExtractRecursive(za, zip_path, dest_path,
+ ×tamp,
+ NULL, NULL, sehandle);
+ free(zip_path);
+ free(dest_path);
+ return StringValue(strdup(success ? "t" : ""));
+}
+
+
+// package_extract_file(package_path, destination_path)
+// or
+// package_extract_file(package_path)
+// to return the entire contents of the file as the result of this
+// function (the char* returned is actually a FileContents*).
+Value* PackageExtractFileFn(const char* name, State* state,
+ int argc, Expr* argv[]) {
+ if (argc < 1 || argc > 2) {
+ return ErrorAbort(state, "%s() expects 1 or 2 args, got %d",
+ name, argc);
+ }
+ bool success = false;
+
+ if (argc == 2) {
+ // The two-argument version extracts to a file.
+
+ ZipArchive* za = ((UpdaterInfo*)(state->cookie))->package_zip;
+
+ char* zip_path;
+ char* dest_path;
+ if (ReadArgs(state, argv, 2, &zip_path, &dest_path) < 0) return NULL;
+
+ const ZipEntry* entry = mzFindZipEntry(za, zip_path);
+ if (entry == NULL) {
+ printf("%s: no %s in package\n", name, zip_path);
+ goto done2;
+ }
+
+ {
+ FILE* f = fopen(dest_path, "wb");
+ if (f == NULL) {
+ printf("%s: can't open %s for write: %s\n",
+ name, dest_path, strerror(errno));
+ goto done2;
+ }
+ success = mzExtractZipEntryToFile(za, entry, fileno(f));
+ fclose(f);
+ }
+
+ done2:
+ free(zip_path);
+ free(dest_path);
+ return StringValue(strdup(success ? "t" : ""));
+ } else {
+ // The one-argument version returns the contents of the file
+ // as the result.
+
+ char* zip_path;
+ Value* v = reinterpret_cast<Value*>(malloc(sizeof(Value)));
+ v->type = VAL_BLOB;
+ v->size = -1;
+ v->data = NULL;
+
+ if (ReadArgs(state, argv, 1, &zip_path) < 0) return NULL;
+
+ ZipArchive* za = ((UpdaterInfo*)(state->cookie))->package_zip;
+ const ZipEntry* entry = mzFindZipEntry(za, zip_path);
+ if (entry == NULL) {
+ printf("%s: no %s in package\n", name, zip_path);
+ goto done1;
+ }
+
+ v->size = mzGetZipEntryUncompLen(entry);
+ v->data = reinterpret_cast<char*>(malloc(v->size));
+ if (v->data == NULL) {
+ printf("%s: failed to allocate %ld bytes for %s\n",
+ name, (long)v->size, zip_path);
+ goto done1;
+ }
+
+ success = mzExtractZipEntryToBuffer(za, entry,
+ (unsigned char *)v->data);
+
+ done1:
+ free(zip_path);
+ if (!success) {
+ free(v->data);
+ v->data = NULL;
+ v->size = -1;
+ }
+ return v;
+ }
+}
+
+// Create all parent directories of name, if necessary.
+static int make_parents(char* name) {
+ char* p;
+ for (p = name + (strlen(name)-1); p > name; --p) {
+ if (*p != '/') continue;
+ *p = '\0';
+ if (make_parents(name) < 0) return -1;
+ int result = mkdir(name, 0700);
+ if (result == 0) printf("created [%s]\n", name);
+ *p = '/';
+ if (result == 0 || errno == EEXIST) {
+ // successfully created or already existed; we're done
+ return 0;
+ } else {
+ printf("failed to mkdir %s: %s\n", name, strerror(errno));
+ return -1;
+ }
+ }
+ return 0;
+}
+
+// symlink target src1 src2 ...
+// unlinks any previously existing src1, src2, etc before creating symlinks.
+Value* SymlinkFn(const char* name, State* state, int argc, Expr* argv[]) {
+ if (argc == 0) {
+ return ErrorAbort(state, "%s() expects 1+ args, got %d", name, argc);
+ }
+ char* target;
+ target = Evaluate(state, argv[0]);
+ if (target == NULL) return NULL;
+
+ char** srcs = ReadVarArgs(state, argc-1, argv+1);
+ if (srcs == NULL) {
+ free(target);
+ return NULL;
+ }
+
+ int bad = 0;
+ int i;
+ for (i = 0; i < argc-1; ++i) {
+ if (unlink(srcs[i]) < 0) {
+ if (errno != ENOENT) {
+ printf("%s: failed to remove %s: %s\n",
+ name, srcs[i], strerror(errno));
+ ++bad;
+ }
+ }
+ if (make_parents(srcs[i])) {
+ printf("%s: failed to symlink %s to %s: making parents failed\n",
+ name, srcs[i], target);
+ ++bad;
+ }
+ if (symlink(target, srcs[i]) < 0) {
+ printf("%s: failed to symlink %s to %s: %s\n",
+ name, srcs[i], target, strerror(errno));
+ ++bad;
+ }
+ free(srcs[i]);
+ }
+ free(srcs);
+ if (bad) {
+ return ErrorAbort(state, "%s: some symlinks failed", name);
+ }
+ return StringValue(strdup(""));
+}
+
+struct perm_parsed_args {
+ bool has_uid;
+ uid_t uid;
+ bool has_gid;
+ gid_t gid;
+ bool has_mode;
+ mode_t mode;
+ bool has_fmode;
+ mode_t fmode;
+ bool has_dmode;
+ mode_t dmode;
+ bool has_selabel;
+ char* selabel;
+ bool has_capabilities;
+ uint64_t capabilities;
+};
+
+static struct perm_parsed_args ParsePermArgs(State * state, int argc, char** args) {
+ int i;
+ struct perm_parsed_args parsed;
+ int bad = 0;
+ static int max_warnings = 20;
+
+ memset(&parsed, 0, sizeof(parsed));
+
+ for (i = 1; i < argc; i += 2) {
+ if (strcmp("uid", args[i]) == 0) {
+ int64_t uid;
+ if (sscanf(args[i+1], "%" SCNd64, &uid) == 1) {
+ parsed.uid = uid;
+ parsed.has_uid = true;
+ } else {
+ uiPrintf(state, "ParsePermArgs: invalid UID \"%s\"\n", args[i + 1]);
+ bad++;
+ }
+ continue;
+ }
+ if (strcmp("gid", args[i]) == 0) {
+ int64_t gid;
+ if (sscanf(args[i+1], "%" SCNd64, &gid) == 1) {
+ parsed.gid = gid;
+ parsed.has_gid = true;
+ } else {
+ uiPrintf(state, "ParsePermArgs: invalid GID \"%s\"\n", args[i + 1]);
+ bad++;
+ }
+ continue;
+ }
+ if (strcmp("mode", args[i]) == 0) {
+ int32_t mode;
+ if (sscanf(args[i+1], "%" SCNi32, &mode) == 1) {
+ parsed.mode = mode;
+ parsed.has_mode = true;
+ } else {
+ uiPrintf(state, "ParsePermArgs: invalid mode \"%s\"\n", args[i + 1]);
+ bad++;
+ }
+ continue;
+ }
+ if (strcmp("dmode", args[i]) == 0) {
+ int32_t mode;
+ if (sscanf(args[i+1], "%" SCNi32, &mode) == 1) {
+ parsed.dmode = mode;
+ parsed.has_dmode = true;
+ } else {
+ uiPrintf(state, "ParsePermArgs: invalid dmode \"%s\"\n", args[i + 1]);
+ bad++;
+ }
+ continue;
+ }
+ if (strcmp("fmode", args[i]) == 0) {
+ int32_t mode;
+ if (sscanf(args[i+1], "%" SCNi32, &mode) == 1) {
+ parsed.fmode = mode;
+ parsed.has_fmode = true;
+ } else {
+ uiPrintf(state, "ParsePermArgs: invalid fmode \"%s\"\n", args[i + 1]);
+ bad++;
+ }
+ continue;
+ }
+ if (strcmp("capabilities", args[i]) == 0) {
+ int64_t capabilities;
+ if (sscanf(args[i+1], "%" SCNi64, &capabilities) == 1) {
+ parsed.capabilities = capabilities;
+ parsed.has_capabilities = true;
+ } else {
+ uiPrintf(state, "ParsePermArgs: invalid capabilities \"%s\"\n", args[i + 1]);
+ bad++;
+ }
+ continue;
+ }
+ if (strcmp("selabel", args[i]) == 0) {
+ if (args[i+1][0] != '\0') {
+ parsed.selabel = args[i+1];
+ parsed.has_selabel = true;
+ } else {
+ uiPrintf(state, "ParsePermArgs: invalid selabel \"%s\"\n", args[i + 1]);
+ bad++;
+ }
+ continue;
+ }
+ if (max_warnings != 0) {
+ printf("ParsedPermArgs: unknown key \"%s\", ignoring\n", args[i]);
+ max_warnings--;
+ if (max_warnings == 0) {
+ printf("ParsedPermArgs: suppressing further warnings\n");
+ }
+ }
+ }
+ return parsed;
+}
+
+static int ApplyParsedPerms(
+ State * state,
+ const char* filename,
+ const struct stat *statptr,
+ struct perm_parsed_args parsed)
+{
+ int bad = 0;
+
+ if (parsed.has_selabel) {
+ if (lsetfilecon(filename, parsed.selabel) != 0) {
+ uiPrintf(state, "ApplyParsedPerms: lsetfilecon of %s to %s failed: %s\n",
+ filename, parsed.selabel, strerror(errno));
+ bad++;
+ }
+ }
+
+ /* ignore symlinks */
+ if (S_ISLNK(statptr->st_mode)) {
+ return bad;
+ }
+
+ if (parsed.has_uid) {
+ if (chown(filename, parsed.uid, -1) < 0) {
+ uiPrintf(state, "ApplyParsedPerms: chown of %s to %d failed: %s\n",
+ filename, parsed.uid, strerror(errno));
+ bad++;
+ }
+ }
+
+ if (parsed.has_gid) {
+ if (chown(filename, -1, parsed.gid) < 0) {
+ uiPrintf(state, "ApplyParsedPerms: chgrp of %s to %d failed: %s\n",
+ filename, parsed.gid, strerror(errno));
+ bad++;
+ }
+ }
+
+ if (parsed.has_mode) {
+ if (chmod(filename, parsed.mode) < 0) {
+ uiPrintf(state, "ApplyParsedPerms: chmod of %s to %d failed: %s\n",
+ filename, parsed.mode, strerror(errno));
+ bad++;
+ }
+ }
+
+ if (parsed.has_dmode && S_ISDIR(statptr->st_mode)) {
+ if (chmod(filename, parsed.dmode) < 0) {
+ uiPrintf(state, "ApplyParsedPerms: chmod of %s to %d failed: %s\n",
+ filename, parsed.dmode, strerror(errno));
+ bad++;
+ }
+ }
+
+ if (parsed.has_fmode && S_ISREG(statptr->st_mode)) {
+ if (chmod(filename, parsed.fmode) < 0) {
+ uiPrintf(state, "ApplyParsedPerms: chmod of %s to %d failed: %s\n",
+ filename, parsed.fmode, strerror(errno));
+ bad++;
+ }
+ }
+
+ if (parsed.has_capabilities && S_ISREG(statptr->st_mode)) {
+ if (parsed.capabilities == 0) {
+ if ((removexattr(filename, XATTR_NAME_CAPS) == -1) && (errno != ENODATA)) {
+ // Report failure unless it's ENODATA (attribute not set)
+ uiPrintf(state, "ApplyParsedPerms: removexattr of %s to %" PRIx64 " failed: %s\n",
+ filename, parsed.capabilities, strerror(errno));
+ bad++;
+ }
+ } else {
+ struct vfs_cap_data cap_data;
+ memset(&cap_data, 0, sizeof(cap_data));
+ cap_data.magic_etc = VFS_CAP_REVISION | VFS_CAP_FLAGS_EFFECTIVE;
+ cap_data.data[0].permitted = (uint32_t) (parsed.capabilities & 0xffffffff);
+ cap_data.data[0].inheritable = 0;
+ cap_data.data[1].permitted = (uint32_t) (parsed.capabilities >> 32);
+ cap_data.data[1].inheritable = 0;
+ if (setxattr(filename, XATTR_NAME_CAPS, &cap_data, sizeof(cap_data), 0) < 0) {
+ uiPrintf(state, "ApplyParsedPerms: setcap of %s to %" PRIx64 " failed: %s\n",
+ filename, parsed.capabilities, strerror(errno));
+ bad++;
+ }
+ }
+ }
+
+ return bad;
+}
+
+// nftw doesn't allow us to pass along context, so we need to use
+// global variables. *sigh*
+static struct perm_parsed_args recursive_parsed_args;
+static State* recursive_state;
+
+static int do_SetMetadataRecursive(const char* filename, const struct stat *statptr,
+ int fileflags, struct FTW *pfwt) {
+ return ApplyParsedPerms(recursive_state, filename, statptr, recursive_parsed_args);
+}
+
+static Value* SetMetadataFn(const char* name, State* state, int argc, Expr* argv[]) {
+ int bad = 0;
+ struct stat sb;
+ Value* result = NULL;
+
+ bool recursive = (strcmp(name, "set_metadata_recursive") == 0);
+
+ if ((argc % 2) != 1) {
+ return ErrorAbort(state, "%s() expects an odd number of arguments, got %d", name, argc);
+ }
+
+ char** args = ReadVarArgs(state, argc, argv);
+ if (args == NULL) return NULL;
+
+ if (lstat(args[0], &sb) == -1) {
+ result = ErrorAbort(state, "%s: Error on lstat of \"%s\": %s", name, args[0], strerror(errno));
+ goto done;
+ }
+
+ {
+ struct perm_parsed_args parsed = ParsePermArgs(state, argc, args);
+
+ if (recursive) {
+ recursive_parsed_args = parsed;
+ recursive_state = state;
+ bad += nftw(args[0], do_SetMetadataRecursive, 30, FTW_CHDIR | FTW_DEPTH | FTW_PHYS);
+ memset(&recursive_parsed_args, 0, sizeof(recursive_parsed_args));
+ recursive_state = NULL;
+ } else {
+ bad += ApplyParsedPerms(state, args[0], &sb, parsed);
+ }
+ }
+
+done:
+ for (int i = 0; i < argc; ++i) {
+ free(args[i]);
+ }
+ free(args);
+
+ if (result != NULL) {
+ return result;
+ }
+
+ if (bad > 0) {
+ return ErrorAbort(state, "%s: some changes failed", name);
+ }
+
+ return StringValue(strdup(""));
+}
+
+Value* GetPropFn(const char* name, State* state, int argc, Expr* argv[]) {
+ if (argc != 1) {
+ return ErrorAbort(state, "%s() expects 1 arg, got %d", name, argc);
+ }
+ char* key = Evaluate(state, argv[0]);
+ if (key == NULL) return NULL;
+
+ char value[PROPERTY_VALUE_MAX];
+ property_get(key, value, "");
+ free(key);
+
+ return StringValue(strdup(value));
+}
+
+
+// file_getprop(file, key)
+//
+// interprets 'file' as a getprop-style file (key=value pairs, one
+// per line. # comment lines,blank lines, lines without '=' ignored),
+// and returns the value for 'key' (or "" if it isn't defined).
+Value* FileGetPropFn(const char* name, State* state, int argc, Expr* argv[]) {
+ char* result = NULL;
+ char* buffer = NULL;
+ char* filename;
+ char* key;
+ if (ReadArgs(state, argv, 2, &filename, &key) < 0) {
+ return NULL;
+ }
+
+ struct stat st;
+ if (stat(filename, &st) < 0) {
+ ErrorAbort(state, "%s: failed to stat \"%s\": %s", name, filename, strerror(errno));
+ goto done;
+ }
+
+#define MAX_FILE_GETPROP_SIZE 65536
+
+ if (st.st_size > MAX_FILE_GETPROP_SIZE) {
+ ErrorAbort(state, "%s too large for %s (max %d)", filename, name, MAX_FILE_GETPROP_SIZE);
+ goto done;
+ }
+
+ buffer = reinterpret_cast<char*>(malloc(st.st_size+1));
+ if (buffer == NULL) {
+ ErrorAbort(state, "%s: failed to alloc %lld bytes", name, (long long)st.st_size+1);
+ goto done;
+ }
+
+ FILE* f;
+ f = fopen(filename, "rb");
+ if (f == NULL) {
+ ErrorAbort(state, "%s: failed to open %s: %s", name, filename, strerror(errno));
+ goto done;
+ }
+
+ if (fread(buffer, 1, st.st_size, f) != st.st_size) {
+ ErrorAbort(state, "%s: failed to read %lld bytes from %s",
+ name, (long long)st.st_size+1, filename);
+ fclose(f);
+ goto done;
+ }
+ buffer[st.st_size] = '\0';
+
+ fclose(f);
+
+ char* line;
+ line = strtok(buffer, "\n");
+ do {
+ // skip whitespace at start of line
+ while (*line && isspace(*line)) ++line;
+
+ // comment or blank line: skip to next line
+ if (*line == '\0' || *line == '#') continue;
+
+ char* equal = strchr(line, '=');
+ if (equal == NULL) {
+ continue;
+ }
+
+ // trim whitespace between key and '='
+ char* key_end = equal-1;
+ while (key_end > line && isspace(*key_end)) --key_end;
+ key_end[1] = '\0';
+
+ // not the key we're looking for
+ if (strcmp(key, line) != 0) continue;
+
+ // skip whitespace after the '=' to the start of the value
+ char* val_start = equal+1;
+ while(*val_start && isspace(*val_start)) ++val_start;
+
+ // trim trailing whitespace
+ char* val_end = val_start + strlen(val_start)-1;
+ while (val_end > val_start && isspace(*val_end)) --val_end;
+ val_end[1] = '\0';
+
+ result = strdup(val_start);
+ break;
+
+ } while ((line = strtok(NULL, "\n")));
+
+ if (result == NULL) result = strdup("");
+
+ done:
+ free(filename);
+ free(key);
+ free(buffer);
+ return StringValue(result);
+}
+
+// write_raw_image(filename_or_blob, partition)
+Value* WriteRawImageFn(const char* name, State* state, int argc, Expr* argv[]) {
+ char* result = NULL;
+
+ Value* partition_value;
+ Value* contents;
+ if (ReadValueArgs(state, argv, 2, &contents, &partition_value) < 0) {
+ return NULL;
+ }
+
+ char* partition = NULL;
+ if (partition_value->type != VAL_STRING) {
+ ErrorAbort(state, "partition argument to %s must be string", name);
+ goto done;
+ }
+ partition = partition_value->data;
+ if (strlen(partition) == 0) {
+ ErrorAbort(state, "partition argument to %s can't be empty", name);
+ goto done;
+ }
+ if (contents->type == VAL_STRING && strlen((char*) contents->data) == 0) {
+ ErrorAbort(state, "file argument to %s can't be empty", name);
+ goto done;
+ }
+
+ mtd_scan_partitions();
+ const MtdPartition* mtd;
+ mtd = mtd_find_partition_by_name(partition);
+ if (mtd == NULL) {
+ printf("%s: no mtd partition named \"%s\"\n", name, partition);
+ result = strdup("");
+ goto done;
+ }
+
+ MtdWriteContext* ctx;
+ ctx = mtd_write_partition(mtd);
+ if (ctx == NULL) {
+ printf("%s: can't write mtd partition \"%s\"\n",
+ name, partition);
+ result = strdup("");
+ goto done;
+ }
+
+ bool success;
+
+ if (contents->type == VAL_STRING) {
+ // we're given a filename as the contents
+ char* filename = contents->data;
+ FILE* f = fopen(filename, "rb");
+ if (f == NULL) {
+ printf("%s: can't open %s: %s\n", name, filename, strerror(errno));
+ result = strdup("");
+ goto done;
+ }
+
+ success = true;
+ char* buffer = reinterpret_cast<char*>(malloc(BUFSIZ));
+ int read;
+ while (success && (read = fread(buffer, 1, BUFSIZ, f)) > 0) {
+ int wrote = mtd_write_data(ctx, buffer, read);
+ success = success && (wrote == read);
+ }
+ free(buffer);
+ fclose(f);
+ } else {
+ // we're given a blob as the contents
+ ssize_t wrote = mtd_write_data(ctx, contents->data, contents->size);
+ success = (wrote == contents->size);
+ }
+ if (!success) {
+ printf("mtd_write_data to %s failed: %s\n",
+ partition, strerror(errno));
+ }
+
+ if (mtd_erase_blocks(ctx, -1) == -1) {
+ printf("%s: error erasing blocks of %s\n", name, partition);
+ }
+ if (mtd_write_close(ctx) != 0) {
+ printf("%s: error closing write of %s\n", name, partition);
+ }
+
+ printf("%s %s partition\n",
+ success ? "wrote" : "failed to write", partition);
+
+ result = success ? partition : strdup("");
+
+done:
+ if (result != partition) FreeValue(partition_value);
+ FreeValue(contents);
+ return StringValue(result);
+}
+
+// apply_patch_space(bytes)
+Value* ApplyPatchSpaceFn(const char* name, State* state,
+ int argc, Expr* argv[]) {
+ char* bytes_str;
+ if (ReadArgs(state, argv, 1, &bytes_str) < 0) {
+ return NULL;
+ }
+
+ char* endptr;
+ size_t bytes = strtol(bytes_str, &endptr, 10);
+ if (bytes == 0 && endptr == bytes_str) {
+ ErrorAbort(state, "%s(): can't parse \"%s\" as byte count\n\n", name, bytes_str);
+ free(bytes_str);
+ return NULL;
+ }
+
+ return StringValue(strdup(CacheSizeCheck(bytes) ? "" : "t"));
+}
+
+// apply_patch(file, size, init_sha1, tgt_sha1, patch)
+
+Value* ApplyPatchFn(const char* name, State* state, int argc, Expr* argv[]) {
+ if (argc < 6 || (argc % 2) == 1) {
+ return ErrorAbort(state, "%s(): expected at least 6 args and an "
+ "even number, got %d",
+ name, argc);
+ }
+
+ char* source_filename;
+ char* target_filename;
+ char* target_sha1;
+ char* target_size_str;
+ if (ReadArgs(state, argv, 4, &source_filename, &target_filename,
+ &target_sha1, &target_size_str) < 0) {
+ return NULL;
+ }
+
+ char* endptr;
+ size_t target_size = strtol(target_size_str, &endptr, 10);
+ if (target_size == 0 && endptr == target_size_str) {
+ ErrorAbort(state, "%s(): can't parse \"%s\" as byte count",
+ name, target_size_str);
+ free(source_filename);
+ free(target_filename);
+ free(target_sha1);
+ free(target_size_str);
+ return NULL;
+ }
+
+ int patchcount = (argc-4) / 2;
+ Value** patches = ReadValueVarArgs(state, argc-4, argv+4);
+
+ int i;
+ for (i = 0; i < patchcount; ++i) {
+ if (patches[i*2]->type != VAL_STRING) {
+ ErrorAbort(state, "%s(): sha-1 #%d is not string", name, i);
+ break;
+ }
+ if (patches[i*2+1]->type != VAL_BLOB) {
+ ErrorAbort(state, "%s(): patch #%d is not blob", name, i);
+ break;
+ }
+ }
+ if (i != patchcount) {
+ for (i = 0; i < patchcount*2; ++i) {
+ FreeValue(patches[i]);
+ }
+ free(patches);
+ return NULL;
+ }
+
+ char** patch_sha_str = reinterpret_cast<char**>(malloc(patchcount * sizeof(char*)));
+ for (i = 0; i < patchcount; ++i) {
+ patch_sha_str[i] = patches[i*2]->data;
+ patches[i*2]->data = NULL;
+ FreeValue(patches[i*2]);
+ patches[i] = patches[i*2+1];
+ }
+
+ int result = applypatch(source_filename, target_filename,
+ target_sha1, target_size,
+ patchcount, patch_sha_str, patches, NULL);
+
+ for (i = 0; i < patchcount; ++i) {
+ FreeValue(patches[i]);
+ }
+ free(patch_sha_str);
+ free(patches);
+
+ return StringValue(strdup(result == 0 ? "t" : ""));
+}
+
+// apply_patch_check(file, [sha1_1, ...])
+Value* ApplyPatchCheckFn(const char* name, State* state,
+ int argc, Expr* argv[]) {
+ if (argc < 1) {
+ return ErrorAbort(state, "%s(): expected at least 1 arg, got %d",
+ name, argc);
+ }
+
+ char* filename;
+ if (ReadArgs(state, argv, 1, &filename) < 0) {
+ return NULL;
+ }
+
+ int patchcount = argc-1;
+ char** sha1s = ReadVarArgs(state, argc-1, argv+1);
+
+ int result = applypatch_check(filename, patchcount, sha1s);
+
+ int i;
+ for (i = 0; i < patchcount; ++i) {
+ free(sha1s[i]);
+ }
+ free(sha1s);
+
+ return StringValue(strdup(result == 0 ? "t" : ""));
+}
+
+Value* UIPrintFn(const char* name, State* state, int argc, Expr* argv[]) {
+ char** args = ReadVarArgs(state, argc, argv);
+ if (args == NULL) {
+ return NULL;
+ }
+
+ int size = 0;
+ int i;
+ for (i = 0; i < argc; ++i) {
+ size += strlen(args[i]);
+ }
+ char* buffer = reinterpret_cast<char*>(malloc(size+1));
+ size = 0;
+ for (i = 0; i < argc; ++i) {
+ strcpy(buffer+size, args[i]);
+ size += strlen(args[i]);
+ free(args[i]);
+ }
+ free(args);
+ buffer[size] = '\0';
+ uiPrint(state, buffer);
+ return StringValue(buffer);
+}
+
+Value* WipeCacheFn(const char* name, State* state, int argc, Expr* argv[]) {
+ if (argc != 0) {
+ return ErrorAbort(state, "%s() expects no args, got %d", name, argc);
+ }
+ fprintf(((UpdaterInfo*)(state->cookie))->cmd_pipe, "wipe_cache\n");
+ return StringValue(strdup("t"));
+}
+
+Value* RunProgramFn(const char* name, State* state, int argc, Expr* argv[]) {
+ if (argc < 1) {
+ return ErrorAbort(state, "%s() expects at least 1 arg", name);
+ }
+ char** args = ReadVarArgs(state, argc, argv);
+ if (args == NULL) {
+ return NULL;
+ }
+
+ char** args2 = reinterpret_cast<char**>(malloc(sizeof(char*) * (argc+1)));
+ memcpy(args2, args, sizeof(char*) * argc);
+ args2[argc] = NULL;
+
+ printf("about to run program [%s] with %d args\n", args2[0], argc);
+
+ pid_t child = fork();
+ if (child == 0) {
+ execv(args2[0], args2);
+ printf("run_program: execv failed: %s\n", strerror(errno));
+ _exit(1);
+ }
+ int status;
+ waitpid(child, &status, 0);
+ if (WIFEXITED(status)) {
+ if (WEXITSTATUS(status) != 0) {
+ printf("run_program: child exited with status %d\n",
+ WEXITSTATUS(status));
+ }
+ } else if (WIFSIGNALED(status)) {
+ printf("run_program: child terminated by signal %d\n",
+ WTERMSIG(status));
+ }
+
+ int i;
+ for (i = 0; i < argc; ++i) {
+ free(args[i]);
+ }
+ free(args);
+ free(args2);
+
+ char buffer[20];
+ sprintf(buffer, "%d", status);
+
+ return StringValue(strdup(buffer));
+}
+
+// sha1_check(data)
+// to return the sha1 of the data (given in the format returned by
+// read_file).
+//
+// sha1_check(data, sha1_hex, [sha1_hex, ...])
+// returns the sha1 of the file if it matches any of the hex
+// strings passed, or "" if it does not equal any of them.
+//
+Value* Sha1CheckFn(const char* name, State* state, int argc, Expr* argv[]) {
+ if (argc < 1) {
+ return ErrorAbort(state, "%s() expects at least 1 arg", name);
+ }
+
+ Value** args = ReadValueVarArgs(state, argc, argv);
+ if (args == NULL) {
+ return NULL;
+ }
+
+ if (args[0]->size < 0) {
+ return StringValue(strdup(""));
+ }
+ uint8_t digest[SHA_DIGEST_SIZE];
+ SHA_hash(args[0]->data, args[0]->size, digest);
+ FreeValue(args[0]);
+
+ if (argc == 1) {
+ return StringValue(PrintSha1(digest));
+ }
+
+ int i;
+ uint8_t* arg_digest = reinterpret_cast<uint8_t*>(malloc(SHA_DIGEST_SIZE));
+ for (i = 1; i < argc; ++i) {
+ if (args[i]->type != VAL_STRING) {
+ printf("%s(): arg %d is not a string; skipping",
+ name, i);
+ } else if (ParseSha1(args[i]->data, arg_digest) != 0) {
+ // Warn about bad args and skip them.
+ printf("%s(): error parsing \"%s\" as sha-1; skipping",
+ name, args[i]->data);
+ } else if (memcmp(digest, arg_digest, SHA_DIGEST_SIZE) == 0) {
+ break;
+ }
+ FreeValue(args[i]);
+ }
+ if (i >= argc) {
+ // Didn't match any of the hex strings; return false.
+ return StringValue(strdup(""));
+ }
+ // Found a match; free all the remaining arguments and return the
+ // matched one.
+ int j;
+ for (j = i+1; j < argc; ++j) {
+ FreeValue(args[j]);
+ }
+ return args[i];
+}
+
+// Read a local file and return its contents (the Value* returned
+// is actually a FileContents*).
+Value* ReadFileFn(const char* name, State* state, int argc, Expr* argv[]) {
+ if (argc != 1) {
+ return ErrorAbort(state, "%s() expects 1 arg, got %d", name, argc);
+ }
+ char* filename;
+ if (ReadArgs(state, argv, 1, &filename) < 0) return NULL;
+
+ Value* v = reinterpret_cast<Value*>(malloc(sizeof(Value)));
+ v->type = VAL_BLOB;
+
+ FileContents fc;
+ if (LoadFileContents(filename, &fc) != 0) {
+ free(filename);
+ v->size = -1;
+ v->data = NULL;
+ free(fc.data);
+ return v;
+ }
+
+ v->size = fc.size;
+ v->data = (char*)fc.data;
+
+ free(filename);
+ return v;
+}
+
+// Immediately reboot the device. Recovery is not finished normally,
+// so if you reboot into recovery it will re-start applying the
+// current package (because nothing has cleared the copy of the
+// arguments stored in the BCB).
+//
+// The argument is the partition name passed to the android reboot
+// property. It can be "recovery" to boot from the recovery
+// partition, or "" (empty string) to boot from the regular boot
+// partition.
+Value* RebootNowFn(const char* name, State* state, int argc, Expr* argv[]) {
+ if (argc != 2) {
+ return ErrorAbort(state, "%s() expects 2 args, got %d", name, argc);
+ }
+
+ char* filename;
+ char* property;
+ if (ReadArgs(state, argv, 2, &filename, &property) < 0) return NULL;
+
+ char buffer[80];
+
+ // zero out the 'command' field of the bootloader message.
+ memset(buffer, 0, sizeof(((struct bootloader_message*)0)->command));
+ FILE* f = fopen(filename, "r+b");
+ fseek(f, offsetof(struct bootloader_message, command), SEEK_SET);
+ fwrite(buffer, sizeof(((struct bootloader_message*)0)->command), 1, f);
+ fclose(f);
+ free(filename);
+
+ strcpy(buffer, "reboot,");
+ if (property != NULL) {
+ strncat(buffer, property, sizeof(buffer)-10);
+ }
+
+ property_set(ANDROID_RB_PROPERTY, buffer);
+
+ sleep(5);
+ free(property);
+ ErrorAbort(state, "%s() failed to reboot", name);
+ return NULL;
+}
+
+// Store a string value somewhere that future invocations of recovery
+// can access it. This value is called the "stage" and can be used to
+// drive packages that need to do reboots in the middle of
+// installation and keep track of where they are in the multi-stage
+// install.
+//
+// The first argument is the block device for the misc partition
+// ("/misc" in the fstab), which is where this value is stored. The
+// second argument is the string to store; it should not exceed 31
+// bytes.
+Value* SetStageFn(const char* name, State* state, int argc, Expr* argv[]) {
+ if (argc != 2) {
+ return ErrorAbort(state, "%s() expects 2 args, got %d", name, argc);
+ }
+
+ char* filename;
+ char* stagestr;
+ if (ReadArgs(state, argv, 2, &filename, &stagestr) < 0) return NULL;
+
+ // Store this value in the misc partition, immediately after the
+ // bootloader message that the main recovery uses to save its
+ // arguments in case of the device restarting midway through
+ // package installation.
+ FILE* f = fopen(filename, "r+b");
+ fseek(f, offsetof(struct bootloader_message, stage), SEEK_SET);
+ int to_write = strlen(stagestr)+1;
+ int max_size = sizeof(((struct bootloader_message*)0)->stage);
+ if (to_write > max_size) {
+ to_write = max_size;
+ stagestr[max_size-1] = 0;
+ }
+ fwrite(stagestr, to_write, 1, f);
+ fclose(f);
+
+ free(stagestr);
+ return StringValue(filename);
+}
+
+// Return the value most recently saved with SetStageFn. The argument
+// is the block device for the misc partition.
+Value* GetStageFn(const char* name, State* state, int argc, Expr* argv[]) {
+ if (argc != 1) {
+ return ErrorAbort(state, "%s() expects 1 arg, got %d", name, argc);
+ }
+
+ char* filename;
+ if (ReadArgs(state, argv, 1, &filename) < 0) return NULL;
+
+ char buffer[sizeof(((struct bootloader_message*)0)->stage)];
+ FILE* f = fopen(filename, "rb");
+ fseek(f, offsetof(struct bootloader_message, stage), SEEK_SET);
+ fread(buffer, sizeof(buffer), 1, f);
+ fclose(f);
+ buffer[sizeof(buffer)-1] = '\0';
+
+ return StringValue(strdup(buffer));
+}
+
+Value* WipeBlockDeviceFn(const char* name, State* state, int argc, Expr* argv[]) {
+ if (argc != 2) {
+ return ErrorAbort(state, "%s() expects 2 args, got %d", name, argc);
+ }
+
+ char* filename;
+ char* len_str;
+ if (ReadArgs(state, argv, 2, &filename, &len_str) < 0) return NULL;
+
+ size_t len = strtoull(len_str, NULL, 0);
+ int fd = open(filename, O_WRONLY, 0644);
+ int success = wipe_block_device(fd, len);
+
+ free(filename);
+ free(len_str);
+
+ close(fd);
+
+ return StringValue(strdup(success ? "t" : ""));
+}
+
+Value* EnableRebootFn(const char* name, State* state, int argc, Expr* argv[]) {
+ if (argc != 0) {
+ return ErrorAbort(state, "%s() expects no args, got %d", name, argc);
+ }
+ UpdaterInfo* ui = (UpdaterInfo*)(state->cookie);
+ fprintf(ui->cmd_pipe, "enable_reboot\n");
+ return StringValue(strdup("t"));
+}
+
+Value* Tune2FsFn(const char* name, State* state, int argc, Expr* argv[]) {
+ if (argc == 0) {
+ return ErrorAbort(state, "%s() expects args, got %d", name, argc);
+ }
+
+ char** args = ReadVarArgs(state, argc, argv);
+ if (args == NULL) {
+ return ErrorAbort(state, "%s() could not read args", name);
+ }
+
+ char** args2 = reinterpret_cast<char**>(malloc(sizeof(char*) * (argc+1)));
+ // Tune2fs expects the program name as its args[0]
+ args2[0] = strdup(name);
+ for (int i = 0; i < argc; ++i) {
+ args2[i + 1] = args[i];
+ }
+ int result = tune2fs_main(argc + 1, args2);
+ for (int i = 0; i < argc; ++i) {
+ free(args[i]);
+ }
+ free(args);
+
+ free(args2[0]);
+ free(args2);
+ if (result != 0) {
+ return ErrorAbort(state, "%s() returned error code %d", name, result);
+ }
+ return StringValue(strdup("t"));
+}
+
+void RegisterInstallFunctions() {
+ RegisterFunction("mount", MountFn);
+ RegisterFunction("is_mounted", IsMountedFn);
+ RegisterFunction("unmount", UnmountFn);
+ RegisterFunction("format", FormatFn);
+ RegisterFunction("show_progress", ShowProgressFn);
+ RegisterFunction("set_progress", SetProgressFn);
+ RegisterFunction("delete", DeleteFn);
+ RegisterFunction("delete_recursive", DeleteFn);
+ RegisterFunction("package_extract_dir", PackageExtractDirFn);
+ RegisterFunction("package_extract_file", PackageExtractFileFn);
+ RegisterFunction("symlink", SymlinkFn);
+
+ // Usage:
+ // set_metadata("filename", "key1", "value1", "key2", "value2", ...)
+ // Example:
+ // set_metadata("/system/bin/netcfg", "uid", 0, "gid", 3003, "mode", 02750, "selabel", "u:object_r:system_file:s0", "capabilities", 0x0);
+ RegisterFunction("set_metadata", SetMetadataFn);
+
+ // Usage:
+ // set_metadata_recursive("dirname", "key1", "value1", "key2", "value2", ...)
+ // Example:
+ // set_metadata_recursive("/system", "uid", 0, "gid", 0, "fmode", 0644, "dmode", 0755, "selabel", "u:object_r:system_file:s0", "capabilities", 0x0);
+ RegisterFunction("set_metadata_recursive", SetMetadataFn);
+
+ RegisterFunction("getprop", GetPropFn);
+ RegisterFunction("file_getprop", FileGetPropFn);
+ RegisterFunction("write_raw_image", WriteRawImageFn);
+
+ RegisterFunction("apply_patch", ApplyPatchFn);
+ RegisterFunction("apply_patch_check", ApplyPatchCheckFn);
+ RegisterFunction("apply_patch_space", ApplyPatchSpaceFn);
+
+ RegisterFunction("wipe_block_device", WipeBlockDeviceFn);
+
+ RegisterFunction("read_file", ReadFileFn);
+ RegisterFunction("sha1_check", Sha1CheckFn);
+ RegisterFunction("rename", RenameFn);
+
+ RegisterFunction("wipe_cache", WipeCacheFn);
+
+ RegisterFunction("ui_print", UIPrintFn);
+
+ RegisterFunction("run_program", RunProgramFn);
+
+ RegisterFunction("reboot_now", RebootNowFn);
+ RegisterFunction("get_stage", GetStageFn);
+ RegisterFunction("set_stage", SetStageFn);
+
+ RegisterFunction("enable_reboot", EnableRebootFn);
+ RegisterFunction("tune2fs", Tune2FsFn);
+}