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android_bootable_recovery/updater/install.cpp
bigbiff d58ba18272 AOSP10 TWRP Merge: fix conflicts and update libraries needed 
This allows flame to boot TWRP. Still will need to work on
super partition for vendor and system access.

The plan will be to cherry-pick any updates to android-9.0
through gerrit.twrp.me to this branch as a WIP.
2020-03-23 11:18:29 -04:00

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/*
* 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 "updater/install.h"
#include <ctype.h>
#include <errno.h>
#include <fcntl.h>
#include <ftw.h>
#include <inttypes.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/capability.h>
#include <sys/mount.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <sys/xattr.h>
#include <time.h>
#include <unistd.h>
#include <utime.h>
#include <memory>
#include <string>
#include <vector>
#include <android-base/file.h>
#include <android-base/logging.h>
#include <android-base/parsedouble.h>
#include <android-base/parseint.h>
#include <android-base/properties.h>
#include <android-base/stringprintf.h>
#include <android-base/strings.h>
#include <android-base/unique_fd.h>
#include <applypatch/applypatch.h>
#include <bootloader_message/bootloader_message.h>
#include <ext4_utils/wipe.h>
#include <openssl/sha.h>
#include <selinux/label.h>
#include <selinux/selinux.h>
#include <tune2fs.h>
#include <ziparchive/zip_archive.h>
#include "edify/expr.h"
// been redirected to the log file). Because the recovery will only print
// the contents to screen when processing pipe command ui_print.
LOG(INFO) << buffer;
}
static bool is_dir(const std::string& dirpath) {
struct stat st;
return stat(dirpath.c_str(), &st) == 0 && S_ISDIR(st.st_mode);
}
// Create all parent directories of name, if necessary.
static bool make_parents(const std::string& name) {
size_t prev_end = 0;
while (prev_end < name.size()) {
size_t next_end = name.find('/', prev_end + 1);
if (next_end == std::string::npos) {
break;
}
std::string dir_path = name.substr(0, next_end);
if (!is_dir(dir_path)) {
int result = mkdir(dir_path.c_str(), 0700);
if (result != 0) {
PLOG(ERROR) << "failed to mkdir " << dir_path << " when make parents for " << name;
return false;
}
LOG(INFO) << "created [" << dir_path << "]";
}
prev_end = next_end;
}
return true;
}
void uiPrintf(State* _Nonnull state, const char* _Nonnull format, ...) {
std::string error_msg;
va_list ap;
va_start(ap, format);
android::base::StringAppendV(&error_msg, format, ap);
va_end(ap);
uiPrint(state, error_msg);
}
// This is the updater side handler for ui_print() in edify script. Contents will be sent over to
// the recovery side for on-screen display.
Value* UIPrintFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
std::vector<std::string> args;
if (!ReadArgs(state, argv, &args)) {
return ErrorAbort(state, kArgsParsingFailure, "%s(): Failed to parse the argument(s)", name);
}
std::string buffer = android::base::Join(args, "");
uiPrint(state, buffer);
return StringValue(buffer);
}
// package_extract_file(package_file[, dest_file])
// Extracts a single package_file from the update package and writes it to dest_file,
// overwriting existing files if necessary. Without the dest_file argument, returns the
// contents of the package file as a binary blob.
Value* PackageExtractFileFn(const char* name, State* state,
const std::vector<std::unique_ptr<Expr>>& argv) {
if (argv.size() < 1 || argv.size() > 2) {
return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 or 2 args, got %zu", name,
argv.size());
}
if (argv.size() == 2) {
// The two-argument version extracts to a file.
std::vector<std::string> args;
if (!ReadArgs(state, argv, &args)) {
return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse %zu args", name,
argv.size());
}
const std::string& zip_path = args[0];
const std::string& dest_path = args[1];
ZipArchiveHandle za = static_cast<UpdaterInfo*>(state->cookie)->package_zip;
ZipString zip_string_path(zip_path.c_str());
ZipEntry entry;
if (FindEntry(za, zip_string_path, &entry) != 0) {
LOG(ERROR) << name << ": no " << zip_path << " in package";
return StringValue("");
}
android::base::unique_fd fd(TEMP_FAILURE_RETRY(
open(dest_path.c_str(), O_WRONLY | O_CREAT | O_TRUNC, S_IRUSR | S_IWUSR)));
if (fd == -1) {
PLOG(ERROR) << name << ": can't open " << dest_path << " for write";
return StringValue("");
}
bool success = true;
int32_t ret = ExtractEntryToFile(za, &entry, fd);
if (ret != 0) {
LOG(ERROR) << name << ": Failed to extract entry \"" << zip_path << "\" ("
<< entry.uncompressed_length << " bytes) to \"" << dest_path
<< "\": " << ErrorCodeString(ret);
success = false;
}
if (fsync(fd) == -1) {
PLOG(ERROR) << "fsync of \"" << dest_path << "\" failed";
success = false;
}
if (close(fd.release()) != 0) {
PLOG(ERROR) << "close of \"" << dest_path << "\" failed";
success = false;
}
return StringValue(success ? "t" : "");
} else {
// The one-argument version returns the contents of the file as the result.
std::vector<std::string> args;
if (!ReadArgs(state, argv, &args)) {
return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse %zu args", name,
argv.size());
}
const std::string& zip_path = args[0];
ZipArchiveHandle za = static_cast<UpdaterInfo*>(state->cookie)->package_zip;
ZipString zip_string_path(zip_path.c_str());
ZipEntry entry;
if (FindEntry(za, zip_string_path, &entry) != 0) {
return ErrorAbort(state, kPackageExtractFileFailure, "%s(): no %s in package", name,
zip_path.c_str());
}
std::string buffer;
buffer.resize(entry.uncompressed_length);
int32_t ret =
ExtractToMemory(za, &entry, reinterpret_cast<uint8_t*>(&buffer[0]), buffer.size());
if (ret != 0) {
return ErrorAbort(state, kPackageExtractFileFailure,
"%s: Failed to extract entry \"%s\" (%zu bytes) to memory: %s", name,
zip_path.c_str(), buffer.size(), ErrorCodeString(ret));
}
return new Value(Value::Type::BLOB, buffer);
}
}
// patch_partition_check(target_partition, source_partition)
// Checks if the target and source partitions have the desired checksums to be patched. It returns
// directly, if the target partition already has the expected checksum. Otherwise it in turn
// checks the integrity of the source partition and the backup file on /cache.
//
// For example, patch_partition_check(
// "EMMC:/dev/block/boot:12342568:8aaacf187a6929d0e9c3e9e46ea7ff495b43424d",
// "EMMC:/dev/block/boot:12363048:06b0b16299dcefc94900efed01e0763ff644ffa4")
Value* PatchPartitionCheckFn(const char* name, State* state,
const std::vector<std::unique_ptr<Expr>>& argv) {
if (argv.size() != 2) {
return ErrorAbort(state, kArgsParsingFailure,
"%s(): Invalid number of args (expected 2, got %zu)", name, argv.size());
}
std::vector<std::string> args;
if (!ReadArgs(state, argv, &args, 0, 2)) {
return ErrorAbort(state, kArgsParsingFailure, "%s(): Failed to parse the argument(s)", name);
}
std::string err;
auto target = Partition::Parse(args[0], &err);
if (!target) {
return ErrorAbort(state, kArgsParsingFailure, "%s(): Failed to parse target \"%s\": %s", name,
args[0].c_str(), err.c_str());
}
auto source = Partition::Parse(args[1], &err);
if (!source) {
return ErrorAbort(state, kArgsParsingFailure, "%s(): Failed to parse source \"%s\": %s", name,
args[1].c_str(), err.c_str());
}
bool result = PatchPartitionCheck(target, source);
return StringValue(result ? "t" : "");
}
// patch_partition(target, source, patch)
// Applies the given patch to the source partition, and writes the result to the target partition.
//
// For example, patch_partition(
// "EMMC:/dev/block/boot:12342568:8aaacf187a6929d0e9c3e9e46ea7ff495b43424d",
// "EMMC:/dev/block/boot:12363048:06b0b16299dcefc94900efed01e0763ff644ffa4",
// package_extract_file("boot.img.p"))
Value* PatchPartitionFn(const char* name, State* state,
const std::vector<std::unique_ptr<Expr>>& argv) {
if (argv.size() != 3) {
return ErrorAbort(state, kArgsParsingFailure,
"%s(): Invalid number of args (expected 3, got %zu)", name, argv.size());
}
std::vector<std::string> args;
if (!ReadArgs(state, argv, &args, 0, 2)) {
return ErrorAbort(state, kArgsParsingFailure, "%s(): Failed to parse the argument(s)", name);
}
std::string err;
auto target = Partition::Parse(args[0], &err);
if (!target) {
return ErrorAbort(state, kArgsParsingFailure, "%s(): Failed to parse target \"%s\": %s", name,
args[0].c_str(), err.c_str());
}
auto source = Partition::Parse(args[1], &err);
if (!source) {
return ErrorAbort(state, kArgsParsingFailure, "%s(): Failed to parse source \"%s\": %s", name,
args[1].c_str(), err.c_str());
}
std::vector<std::unique_ptr<Value>> values;
if (!ReadValueArgs(state, argv, &values, 2, 1) || values[0]->type != Value::Type::BLOB) {
return ErrorAbort(state, kArgsParsingFailure, "%s(): Invalid patch arg", name);
}
bool result = PatchPartition(target, source, *values[0], nullptr);
return StringValue(result ? "t" : "");
}
// mount(fs_type, partition_type, location, mount_point)
// mount(fs_type, partition_type, location, mount_point, mount_options)
// fs_type="ext4" partition_type="EMMC" location=device
Value* MountFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
if (argv.size() != 4 && argv.size() != 5) {
return ErrorAbort(state, kArgsParsingFailure, "%s() expects 4-5 args, got %zu", name,
argv.size());
}
std::vector<std::string> args;
if (!ReadArgs(state, argv, &args)) {
return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
}
const std::string& fs_type = args[0];
const std::string& partition_type = args[1];
const std::string& location = args[2];
const std::string& mount_point = args[3];
std::string mount_options;
if (argv.size() == 5) {
mount_options = args[4];
}
if (fs_type.empty()) {
return ErrorAbort(state, kArgsParsingFailure, "fs_type argument to %s() can't be empty", name);
}
if (partition_type.empty()) {
return ErrorAbort(state, kArgsParsingFailure, "partition_type argument to %s() can't be empty",
name);
}
if (location.empty()) {
return ErrorAbort(state, kArgsParsingFailure, "location argument to %s() can't be empty", name);
}
if (mount_point.empty()) {
return ErrorAbort(state, kArgsParsingFailure, "mount_point argument to %s() can't be empty",
name);
}
{
char* secontext = nullptr;
if (sehandle) {
selabel_lookup(sehandle, &secontext, mount_point.c_str(), 0755);
setfscreatecon(secontext);
}
mkdir(mount_point.c_str(), 0755);
if (secontext) {
freecon(secontext);
setfscreatecon(nullptr);
}
}
if (mount(location.c_str(), mount_point.c_str(), fs_type.c_str(),
MS_NOATIME | MS_NODEV | MS_NODIRATIME, mount_options.c_str()) < 0) {
uiPrintf(state, "%s: Failed to mount %s at %s: %s", name, location.c_str(), mount_point.c_str(),
strerror(errno));
return StringValue("");
}
return StringValue(mount_point);
}
// is_mounted(mount_point)
Value* IsMountedFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
if (argv.size() != 1) {
return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 arg, got %zu", name, argv.size());
}
std::vector<std::string> args;
if (!ReadArgs(state, argv, &args)) {
return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
}
const std::string& mount_point = args[0];
if (mount_point.empty()) {
return ErrorAbort(state, kArgsParsingFailure,
"mount_point argument to unmount() can't be empty");
}
scan_mounted_volumes();
MountedVolume* vol = find_mounted_volume_by_mount_point(mount_point.c_str());
if (vol == nullptr) {
return StringValue("");
}
return StringValue(mount_point);
}
Value* UnmountFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
if (argv.size() != 1) {
return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 arg, got %zu", name, argv.size());
}
std::vector<std::string> args;
if (!ReadArgs(state, argv, &args)) {
return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
}
const std::string& mount_point = args[0];
if (mount_point.empty()) {
return ErrorAbort(state, kArgsParsingFailure,
"mount_point argument to unmount() can't be empty");
}
scan_mounted_volumes();
MountedVolume* vol = find_mounted_volume_by_mount_point(mount_point.c_str());
if (vol == nullptr) {
uiPrintf(state, "Failed to unmount %s: No such volume", mount_point.c_str());
return nullptr;
} else {
int ret = unmount_mounted_volume(vol);
if (ret != 0) {
uiPrintf(state, "Failed to unmount %s: %s", mount_point.c_str(), strerror(errno));
}
}
return StringValue(mount_point);
}
static int exec_cmd(const std::vector<std::string>& args) {
CHECK(!args.empty());
auto argv = StringVectorToNullTerminatedArray(args);
pid_t child;
if ((child = vfork()) == 0) {
execv(argv[0], argv.data());
_exit(EXIT_FAILURE);
}
int status;
waitpid(child, &status, 0);
if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) {
LOG(ERROR) << args[0] << " failed with status " << WEXITSTATUS(status);
}
return WEXITSTATUS(status);
}
// format(fs_type, partition_type, location, fs_size, mount_point)
//
// 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, const std::vector<std::unique_ptr<Expr>>& argv) {
if (argv.size() != 5) {
return ErrorAbort(state, kArgsParsingFailure, "%s() expects 5 args, got %zu", name,
argv.size());
}
std::vector<std::string> args;
if (!ReadArgs(state, argv, &args)) {
return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
}
const std::string& fs_type = args[0];
const std::string& partition_type = args[1];
const std::string& location = args[2];
const std::string& fs_size = args[3];
const std::string& mount_point = args[4];
if (fs_type.empty()) {
return ErrorAbort(state, kArgsParsingFailure, "fs_type argument to %s() can't be empty", name);
}
if (partition_type.empty()) {
return ErrorAbort(state, kArgsParsingFailure, "partition_type argument to %s() can't be empty",
name);
}
if (location.empty()) {
return ErrorAbort(state, kArgsParsingFailure, "location argument to %s() can't be empty", name);
}
if (mount_point.empty()) {
return ErrorAbort(state, kArgsParsingFailure, "mount_point argument to %s() can't be empty",
name);
}
int64_t size;
if (!android::base::ParseInt(fs_size, &size)) {
return ErrorAbort(state, kArgsParsingFailure, "%s: failed to parse int in %s", name,
fs_size.c_str());
}
if (fs_type == "ext4") {
std::vector<std::string> mke2fs_args = {
"/system/bin/mke2fs", "-t", "ext4", "-b", "4096", location
};
if (size != 0) {
mke2fs_args.push_back(std::to_string(size / 4096LL));
}
if (auto status = exec_cmd(mke2fs_args); status != 0) {
LOG(ERROR) << name << ": mke2fs failed (" << status << ") on " << location;
return StringValue("");
}
if (auto status = exec_cmd({ "/system/bin/e2fsdroid", "-e", "-a", mount_point, location });
status != 0) {
LOG(ERROR) << name << ": e2fsdroid failed (" << status << ") on " << location;
return StringValue("");
}
return StringValue(location);
}
if (fs_type == "f2fs") {
if (size < 0) {
LOG(ERROR) << name << ": fs_size can't be negative for f2fs: " << fs_size;
return StringValue("");
}
std::vector<std::string> f2fs_args = {
"/system/bin/make_f2fs", "-g", "android", "-w", "512", location
};
if (size >= 512) {
f2fs_args.push_back(std::to_string(size / 512));
}
if (auto status = exec_cmd(f2fs_args); status != 0) {
LOG(ERROR) << name << ": make_f2fs failed (" << status << ") on " << location;
return StringValue("");
}
if (auto status = exec_cmd({ "/system/bin/sload_f2fs", "-t", mount_point, location });
status != 0) {
LOG(ERROR) << name << ": sload_f2fs failed (" << status << ") on " << location;
return StringValue("");
}
return StringValue(location);
}
LOG(ERROR) << name << ": unsupported fs_type \"" << fs_type << "\" partition_type \""
<< partition_type << "\"";
return nullptr;
}
// rename(src_name, dst_name)
// Renames src_name to dst_name. It automatically creates the necessary directories for dst_name.
// Example: rename("system/app/Hangouts/Hangouts.apk", "system/priv-app/Hangouts/Hangouts.apk")
Value* RenameFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
if (argv.size() != 2) {
return ErrorAbort(state, kArgsParsingFailure, "%s() expects 2 args, got %zu", name,
argv.size());
}
std::vector<std::string> args;
if (!ReadArgs(state, argv, &args)) {
return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
}
const std::string& src_name = args[0];
const std::string& dst_name = args[1];
if (src_name.empty()) {
return ErrorAbort(state, kArgsParsingFailure, "src_name argument to %s() can't be empty", name);
}
if (dst_name.empty()) {
return ErrorAbort(state, kArgsParsingFailure, "dst_name argument to %s() can't be empty", name);
}
if (!make_parents(dst_name)) {
return ErrorAbort(state, kFileRenameFailure, "Creating parent of %s failed, error %s",
dst_name.c_str(), strerror(errno));
} else if (access(dst_name.c_str(), F_OK) == 0 && access(src_name.c_str(), F_OK) != 0) {
// File was already moved
return StringValue(dst_name);
} else if (rename(src_name.c_str(), dst_name.c_str()) != 0) {
return ErrorAbort(state, kFileRenameFailure, "Rename of %s to %s failed, error %s",
src_name.c_str(), dst_name.c_str(), strerror(errno));
}
return StringValue(dst_name);
}
// delete([filename, ...])
// Deletes all the filenames listed. Returns the number of files successfully deleted.
//
// delete_recursive([dirname, ...])
// Recursively deletes dirnames and all their contents. Returns the number of directories
// successfully deleted.
Value* DeleteFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
std::vector<std::string> paths;
if (!ReadArgs(state, argv, &paths)) {
return nullptr;
}
bool recursive = (strcmp(name, "delete_recursive") == 0);
int success = 0;
for (const auto& path : paths) {
if ((recursive ? dirUnlinkHierarchy(path.c_str()) : unlink(path.c_str())) == 0) {
++success;
}
}
return StringValue(std::to_string(success));
}
Value* ShowProgressFn(const char* name, State* state,
const std::vector<std::unique_ptr<Expr>>& argv) {
if (argv.size() != 2) {
return ErrorAbort(state, kArgsParsingFailure, "%s() expects 2 args, got %zu", name,
argv.size());
}
std::vector<std::string> args;
if (!ReadArgs(state, argv, &args)) {
return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
}
const std::string& frac_str = args[0];
const std::string& sec_str = args[1];
double frac;
if (!android::base::ParseDouble(frac_str.c_str(), &frac)) {
return ErrorAbort(state, kArgsParsingFailure, "%s: failed to parse double in %s", name,
frac_str.c_str());
}
int sec;
if (!android::base::ParseInt(sec_str.c_str(), &sec)) {
return ErrorAbort(state, kArgsParsingFailure, "%s: failed to parse int in %s", name,
sec_str.c_str());
}
UpdaterInfo* ui = static_cast<UpdaterInfo*>(state->cookie);
fprintf(ui->cmd_pipe, "progress %f %d\n", frac, sec);
return StringValue(frac_str);
}
Value* SetProgressFn(const char* name, State* state,
const std::vector<std::unique_ptr<Expr>>& argv) {
if (argv.size() != 1) {
return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 arg, got %zu", name, argv.size());
}
std::vector<std::string> args;
if (!ReadArgs(state, argv, &args)) {
return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
}
const std::string& frac_str = args[0];
double frac;
if (!android::base::ParseDouble(frac_str.c_str(), &frac)) {
return ErrorAbort(state, kArgsParsingFailure, "%s: failed to parse double in %s", name,
frac_str.c_str());
}
UpdaterInfo* ui = static_cast<UpdaterInfo*>(state->cookie);
fprintf(ui->cmd_pipe, "set_progress %f\n", frac);
return StringValue(frac_str);
}
// package_extract_dir(package_dir, dest_dir)
// Extracts all files from the package underneath package_dir and writes them to the
// corresponding tree beneath dest_dir. Any existing files are overwritten.
// Example: package_extract_dir("system", "/system")
//
// Note: package_dir needs to be a relative path; dest_dir needs to be an absolute path.
Value* PackageExtractDirFn(const char* name, State* state,
const std::vector<std::unique_ptr<Expr>>&argv) {
if (argv.size() != 2) {
return ErrorAbort(state, kArgsParsingFailure, "%s() expects 2 args, got %zu", name,
argv.size());
}
std::vector<std::string> args;
if (!ReadArgs(state, argv, &args)) {
return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
}
const std::string& zip_path = args[0];
const std::string& dest_path = args[1];
ZipArchiveHandle za = static_cast<UpdaterInfo*>(state->cookie)->package_zip;
// To create a consistent system image, never use the clock for timestamps.
constexpr struct utimbuf timestamp = { 1217592000, 1217592000 }; // 8/1/2008 default
bool success = ExtractPackageRecursive(za, zip_path, dest_path, &timestamp, sehandle);
return StringValue(success ? "t" : "");
}
// package_extract_file(package_file[, dest_file])
// Extracts a single package_file from the update package and writes it to dest_file,
// overwriting existing files if necessary. Without the dest_file argument, returns the
// contents of the package file as a binary blob.
Value* PackageExtractFileFn(const char* name, State* state,
const std::vector<std::unique_ptr<Expr>>& argv) {
if (argv.size() < 1 || argv.size() > 2) {
return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 or 2 args, got %zu", name,
argv.size());
}
if (argv.size() == 2) {
// The two-argument version extracts to a file.
std::vector<std::string> args;
if (!ReadArgs(state, argv, &args)) {
return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse %zu args", name,
argv.size());
}
const std::string& zip_path = args[0];
const std::string& dest_path = args[1];
ZipArchiveHandle za = static_cast<UpdaterInfo*>(state->cookie)->package_zip;
ZipString zip_string_path(zip_path.c_str());
ZipEntry entry;
if (FindEntry(za, zip_string_path, &entry) != 0) {
LOG(ERROR) << name << ": no " << zip_path << " in package";
return StringValue("");
}
unique_fd fd(TEMP_FAILURE_RETRY(
ota_open(dest_path.c_str(), O_WRONLY | O_CREAT | O_TRUNC, S_IRUSR | S_IWUSR)));
if (fd == -1) {
PLOG(ERROR) << name << ": can't open " << dest_path << " for write";
return StringValue("");
}
bool success = true;
int32_t ret = ExtractEntryToFile(za, &entry, fd);
if (ret != 0) {
LOG(ERROR) << name << ": Failed to extract entry \"" << zip_path << "\" ("
<< entry.uncompressed_length << " bytes) to \"" << dest_path
<< "\": " << ErrorCodeString(ret);
success = false;
}
if (ota_fsync(fd) == -1) {
PLOG(ERROR) << "fsync of \"" << dest_path << "\" failed";
success = false;
}
if (ota_close(fd) == -1) {
PLOG(ERROR) << "close of \"" << dest_path << "\" failed";
success = false;
}
return StringValue(success ? "t" : "");
} else {
// The one-argument version returns the contents of the file as the result.
std::vector<std::string> args;
if (!ReadArgs(state, argv, &args)) {
return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse %zu args", name,
argv.size());
}
const std::string& zip_path = args[0];
ZipArchiveHandle za = static_cast<UpdaterInfo*>(state->cookie)->package_zip;
ZipString zip_string_path(zip_path.c_str());
ZipEntry entry;
if (FindEntry(za, zip_string_path, &entry) != 0) {
return ErrorAbort(state, kPackageExtractFileFailure, "%s(): no %s in package", name,
zip_path.c_str());
}
std::string buffer;
buffer.resize(entry.uncompressed_length);
int32_t ret = ExtractToMemory(za, &entry, reinterpret_cast<uint8_t*>(&buffer[0]), buffer.size());
if (ret != 0) {
return ErrorAbort(state, kPackageExtractFileFailure,
"%s: Failed to extract entry \"%s\" (%zu bytes) to memory: %s", name,
zip_path.c_str(), buffer.size(), ErrorCodeString(ret));
}
return new Value(VAL_BLOB, buffer);
}
}
// symlink(target, [src1, src2, ...])
// Creates all sources as symlinks to target. It unlinks any previously existing src1, src2, etc
// before creating symlinks.
Value* SymlinkFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
if (argv.size() == 0) {
return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1+ args, got %zu", name, argv.size());
}
std::string target;
if (!Evaluate(state, argv[0], &target)) {
return nullptr;
}
std::vector<std::string> srcs;
if (!ReadArgs(state, argv, &srcs, 1, argv.size())) {
return ErrorAbort(state, kArgsParsingFailure, "%s(): Failed to parse the argument(s)", name);
}
size_t bad = 0;
for (const auto& src : srcs) {
if (unlink(src.c_str()) == -1 && errno != ENOENT) {
PLOG(ERROR) << name << ": failed to remove " << src;
++bad;
} else if (!make_parents(src)) {
LOG(ERROR) << name << ": failed to symlink " << src << " to " << target
<< ": making parents failed";
++bad;
} else if (symlink(target.c_str(), src.c_str()) == -1) {
PLOG(ERROR) << name << ": failed to symlink " << src << " to " << target;
++bad;
}
}
if (bad != 0) {
return ErrorAbort(state, kSymlinkFailure, "%s: Failed to create %zu symlink(s)", name, bad);
}
return StringValue("t");
}
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;
const char* selabel;
bool has_capabilities;
uint64_t capabilities;
};
static struct perm_parsed_args ParsePermArgs(State * state,
const std::vector<std::string>& args) {
struct perm_parsed_args parsed;
int bad = 0;
static int max_warnings = 20;
memset(&parsed, 0, sizeof(parsed));
for (size_t i = 1; i < args.size(); i += 2) {
if (args[i] == "uid") {
int64_t uid;
if (sscanf(args[i + 1].c_str(), "%" SCNd64, &uid) == 1) {
parsed.uid = uid;
parsed.has_uid = true;
} else {
uiPrintf(state, "ParsePermArgs: invalid UID \"%s\"\n", args[i + 1].c_str());
bad++;
}
continue;
}
if (args[i] == "gid") {
int64_t gid;
if (sscanf(args[i + 1].c_str(), "%" SCNd64, &gid) == 1) {
parsed.gid = gid;
parsed.has_gid = true;
} else {
uiPrintf(state, "ParsePermArgs: invalid GID \"%s\"\n", args[i + 1].c_str());
bad++;
}
continue;
}
if (args[i] == "mode") {
int32_t mode;
if (sscanf(args[i + 1].c_str(), "%" SCNi32, &mode) == 1) {
parsed.mode = mode;
parsed.has_mode = true;
} else {
uiPrintf(state, "ParsePermArgs: invalid mode \"%s\"\n", args[i + 1].c_str());
bad++;
}
continue;
}
if (args[i] == "dmode") {
int32_t mode;
if (sscanf(args[i + 1].c_str(), "%" SCNi32, &mode) == 1) {
parsed.dmode = mode;
parsed.has_dmode = true;
} else {
uiPrintf(state, "ParsePermArgs: invalid dmode \"%s\"\n", args[i + 1].c_str());
bad++;
}
continue;
}
if (args[i] == "fmode") {
int32_t mode;
if (sscanf(args[i + 1].c_str(), "%" SCNi32, &mode) == 1) {
parsed.fmode = mode;
parsed.has_fmode = true;
} else {
uiPrintf(state, "ParsePermArgs: invalid fmode \"%s\"\n", args[i + 1].c_str());
bad++;
}
continue;
}
if (args[i] == "capabilities") {
int64_t capabilities;
if (sscanf(args[i + 1].c_str(), "%" SCNi64, &capabilities) == 1) {
parsed.capabilities = capabilities;
parsed.has_capabilities = true;
} else {
uiPrintf(state, "ParsePermArgs: invalid capabilities \"%s\"\n", args[i + 1].c_str());
bad++;
}
continue;
}
if (args[i] == "selabel") {
if (!args[i + 1].empty()) {
parsed.selabel = args[i + 1].c_str();
parsed.has_selabel = true;
} else {
uiPrintf(state, "ParsePermArgs: invalid selabel \"%s\"\n", args[i + 1].c_str());
bad++;
}
continue;
}
if (max_warnings != 0) {
printf("ParsedPermArgs: unknown key \"%s\", ignoring\n", args[i].c_str());
max_warnings--;
if (max_warnings == 0) {
LOG(INFO) << "ParsedPermArgs: suppressing further warnings";
}
}
}
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, const std::vector<std::unique_ptr<Expr>>& argv) {
if ((argv.size() % 2) != 1) {
return ErrorAbort(state, kArgsParsingFailure, "%s() expects an odd number of arguments, got %zu",
name, argv.size());
}
std::vector<std::string> args;
if (!ReadArgs(state, argv, &args)) {
return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
}
struct stat sb;
if (lstat(args[0].c_str(), &sb) == -1) {
return ErrorAbort(state, kSetMetadataFailure, "%s: Error on lstat of \"%s\": %s", name,
args[0].c_str(), strerror(errno));
}
struct perm_parsed_args parsed = ParsePermArgs(state, args);
int bad = 0;
bool recursive = (strcmp(name, "set_metadata_recursive") == 0);
if (recursive) {
recursive_parsed_args = parsed;
recursive_state = state;
bad += nftw(args[0].c_str(), 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].c_str(), &sb, parsed);
}
if (bad > 0) {
return ErrorAbort(state, kSetMetadataFailure, "%s: some changes failed", name);
}
return StringValue("");
}
Value* GetPropFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
if (argv.size() != 1) {
return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 arg, got %zu", name, argv.size());
}
std::string key;
if (!Evaluate(state, argv[0], &key)) {
return nullptr;
}
std::string value = android::base::GetProperty(key, "");
return StringValue(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,
const std::vector<std::unique_ptr<Expr>>& argv) {
if (argv.size() != 2) {
return ErrorAbort(state, kArgsParsingFailure, "%s() expects 2 args, got %zu", name,
argv.size());
}
std::vector<std::string> args;
if (!ReadArgs(state, argv, &args)) {
return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
}
const std::string& filename = args[0];
const std::string& key = args[1];
std::string buffer;
if (!android::base::ReadFileToString(filename, &buffer)) {
ErrorAbort(state, kFreadFailure, "%s: failed to read %s", name, filename.c_str());
return nullptr;
}
std::vector<std::string> lines = android::base::Split(buffer, "\n");
for (size_t i = 0; i < lines.size(); i++) {
std::string line = android::base::Trim(lines[i]);
// comment or blank line: skip to next line
if (line.empty() || line[0] == '#') {
continue;
}
size_t equal_pos = line.find('=');
if (equal_pos == std::string::npos) {
continue;
}
// trim whitespace between key and '='
std::string str = android::base::Trim(line.substr(0, equal_pos));
// not the key we're looking for
if (key != str) continue;
return StringValue(android::base::Trim(line.substr(equal_pos + 1)));
}
return StringValue("");
}
// apply_patch_space(bytes)
Value* ApplyPatchSpaceFn(const char* name, State* state,
const std::vector<std::unique_ptr<Expr>>& argv) {
if (argv.size() != 1) {
return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 args, got %zu", name,
argv.size());
}
std::vector<std::string> args;
if (!ReadArgs(state, argv, &args)) {
return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
}
const std::string& bytes_str = args[0];
size_t bytes;
if (!android::base::ParseUint(bytes_str.c_str(), &bytes)) {
return ErrorAbort(state, kArgsParsingFailure, "%s(): can't parse \"%s\" as byte count", name,
bytes_str.c_str());
}
// Skip the cache size check if the update is a retry.
if (state->is_retry || CheckAndFreeSpaceOnCache(bytes)) {
return StringValue("t");
}
return StringValue("");
}
Value* WipeCacheFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
if (!argv.empty()) {
return ErrorAbort(state, kArgsParsingFailure, "%s() expects no args, got %zu", name,
argv.size());
}
fprintf(static_cast<UpdaterInfo*>(state->cookie)->cmd_pipe, "wipe_cache\n");
return StringValue("t");
}
Value* RunProgramFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
if (argv.size() < 1) {
return ErrorAbort(state, kArgsParsingFailure, "%s() expects at least 1 arg", name);
}
std::vector<std::string> args;
if (!ReadArgs(state, argv, &args)) {
return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
}
auto exec_args = StringVectorToNullTerminatedArray(args);
LOG(INFO) << "about to run program [" << exec_args[0] << "] with " << argv.size() << " args";
pid_t child = fork();
if (child == 0) {
execv(exec_args[0], exec_args.data());
PLOG(ERROR) << "run_program: execv failed";
_exit(EXIT_FAILURE);
}
int status;
waitpid(child, &status, 0);
if (WIFEXITED(status)) {
if (WEXITSTATUS(status) != 0) {
LOG(ERROR) << "run_program: child exited with status " << WEXITSTATUS(status);
}
} else if (WIFSIGNALED(status)) {
LOG(ERROR) << "run_program: child terminated by signal " << WTERMSIG(status);
}
return StringValue(std::to_string(status));
}
// read_file(filename)
// Reads a local file 'filename' and returns its contents as a string Value.
Value* ReadFileFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
if (argv.size() != 1) {
return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 arg, got %zu", name, argv.size());
}
std::vector<std::string> args;
if (!ReadArgs(state, argv, &args)) {
return ErrorAbort(state, kArgsParsingFailure, "%s(): Failed to parse the argument(s)", name);
}
const std::string& filename = args[0];
std::string contents;
if (android::base::ReadFileToString(filename, &contents)) {
return new Value(Value::Type::STRING, std::move(contents));
}
// Leave it to caller to handle the failure.
PLOG(ERROR) << name << ": Failed to read " << filename;
return StringValue("");
}
// write_value(value, filename)
// Writes 'value' to 'filename'.
// Example: write_value("960000", "/sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq")
Value* WriteValueFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
if (argv.size() != 2) {
return ErrorAbort(state, kArgsParsingFailure, "%s() expects 2 args, got %zu", name,
argv.size());
}
std::vector<std::string> args;
if (!ReadArgs(state, argv, &args)) {
return ErrorAbort(state, kArgsParsingFailure, "%s(): Failed to parse the argument(s)", name);
}
const std::string& filename = args[1];
if (filename.empty()) {
return ErrorAbort(state, kArgsParsingFailure, "%s(): Filename cannot be empty", name);
}
const std::string& value = args[0];
if (!android::base::WriteStringToFile(value, filename)) {
PLOG(ERROR) << name << ": Failed to write to \"" << filename << "\"";
return StringValue("");
} else {
return StringValue("t");
}
}
// 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, const std::vector<std::unique_ptr<Expr>>& argv) {
if (argv.size() != 2) {
return ErrorAbort(state, kArgsParsingFailure, "%s() expects 2 args, got %zu", name,
argv.size());
}
std::vector<std::string> args;
if (!ReadArgs(state, argv, &args)) {
return ErrorAbort(state, kArgsParsingFailure, "%s(): Failed to parse the argument(s)", name);
}
const std::string& filename = args[0];
const std::string& property = args[1];
// Zero out the 'command' field of the bootloader message. Leave the rest intact.
bootloader_message boot;
std::string err;
if (!read_bootloader_message_from(&boot, filename, &err)) {
LOG(ERROR) << name << "(): Failed to read from \"" << filename << "\": " << err;
return StringValue("");
}
memset(boot.command, 0, sizeof(boot.command));
if (!write_bootloader_message_to(boot, filename, &err)) {
LOG(ERROR) << name << "(): Failed to write to \"" << filename << "\": " << err;
return StringValue("");
}
reboot("reboot," + property);
sleep(5);
return ErrorAbort(state, kRebootFailure, "%s() failed to reboot", name);
}
// 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, const std::vector<std::unique_ptr<Expr>>& argv) {
if (argv.size() != 2) {
return ErrorAbort(state, kArgsParsingFailure, "%s() expects 2 args, got %zu", name,
argv.size());
}
std::vector<std::string> args;
if (!ReadArgs(state, argv, &args)) {
return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
}
const std::string& filename = args[0];
const std::string& stagestr = args[1];
// 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.
bootloader_message boot;
std::string err;
if (!read_bootloader_message_from(&boot, filename, &err)) {
LOG(ERROR) << name << "(): Failed to read from \"" << filename << "\": " << err;
return StringValue("");
}
strlcpy(boot.stage, stagestr.c_str(), sizeof(boot.stage));
if (!write_bootloader_message_to(boot, filename, &err)) {
LOG(ERROR) << name << "(): Failed to write to \"" << filename << "\": " << err;
return StringValue("");
}
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, const std::vector<std::unique_ptr<Expr>>& argv) {
if (argv.size() != 1) {
return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 arg, got %zu", name, argv.size());
}
std::vector<std::string> args;
if (!ReadArgs(state, argv, &args)) {
return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
}
const std::string& filename = args[0];
bootloader_message boot;
std::string err;
if (!read_bootloader_message_from(&boot, filename, &err)) {
LOG(ERROR) << name << "(): Failed to read from \"" << filename << "\": " << err;
return StringValue("");
}
return StringValue(boot.stage);
}
Value* WipeBlockDeviceFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
if (argv.size() != 2) {
return ErrorAbort(state, kArgsParsingFailure, "%s() expects 2 args, got %zu", name,
argv.size());
}
std::vector<std::string> args;
if (!ReadArgs(state, argv, &args)) {
return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
}
const std::string& filename = args[0];
const std::string& len_str = args[1];
size_t len;
if (!android::base::ParseUint(len_str.c_str(), &len)) {
return nullptr;
}
android::base::unique_fd fd(open(filename.c_str(), O_WRONLY));
if (fd == -1) {
PLOG(ERROR) << "Failed to open " << filename;
return StringValue("");
}
// The wipe_block_device function in ext4_utils returns 0 on success and 1
// for failure.
int status = wipe_block_device(fd, len);
return StringValue((status == 0) ? "t" : "");
}
Value* EnableRebootFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
if (!argv.empty()) {
return ErrorAbort(state, kArgsParsingFailure, "%s() expects no args, got %zu", name,
argv.size());
}
UpdaterInfo* ui = static_cast<UpdaterInfo*>(state->cookie);
fprintf(ui->cmd_pipe, "enable_reboot\n");
return StringValue("t");
}
Value* Tune2FsFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
#ifdef HAVE_LIBTUNE2FS
if (argv.empty()) {
return ErrorAbort(state, kArgsParsingFailure, "%s() expects args, got %zu", name, argv.size());
}
std::vector<std::string> args;
if (!ReadArgs(state, argv, &args)) {
return ErrorAbort(state, kArgsParsingFailure, "%s() could not read args", name);
}
// tune2fs expects the program name as its first arg.
args.insert(args.begin(), "tune2fs");
auto tune2fs_args = StringVectorToNullTerminatedArray(args);
// tune2fs changes the filesystem parameters on an ext2 filesystem; it returns 0 on success.
if (auto result = tune2fs_main(tune2fs_args.size() - 1, tune2fs_args.data()); result != 0) {
return ErrorAbort(state, kTune2FsFailure, "%s() returned error code %d", name, result);
}
return StringValue("t");
#else
return ErrorAbort(state, kTune2FsFailure, "%s() support not present, no libtune2fs", name);
#endif // HAVE_LIBTUNE2FS
}
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("apply_patch_space", ApplyPatchSpaceFn);
RegisterFunction("patch_partition", PatchPartitionFn);
RegisterFunction("patch_partition_check", PatchPartitionCheckFn);
RegisterFunction("wipe_block_device", WipeBlockDeviceFn);
RegisterFunction("read_file", ReadFileFn);
RegisterFunction("write_value", WriteValueFn);
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);
}
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