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/*
* Copyright (C) 2019 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 <stdio.h>
#include <string.h>
#include <unistd.h>
#include <string>
#include <android-base/logging.h>
#include <android-base/parseint.h>
#include <selinux/android.h>
#include <selinux/label.h>
#include <selinux/selinux.h>
#include "edify/expr.h"
#include "updater/blockimg.h"
#include "updater/dynamic_partitions.h"
#include "updater/install.h"
#include "updater/updater.h"
// Generated by the makefile, this function defines the
// RegisterDeviceExtensions() function, which calls all the
// registration functions for device-specific extensions.
#include "register.inc"
static void UpdaterLogger(android::base::LogId /* id */, android::base::LogSeverity /* severity */,
const char* /* tag */, const char* /* file */, unsigned int /* line */,
const char* message) {
fprintf(stdout, "%s\n", message);
}
int main(int argc, char** argv) {
// Various things log information to stdout or stderr more or less
// at random (though we've tried to standardize on stdout). The
// log file makes more sense if buffering is turned off so things
// appear in the right order.
setbuf(stdout, nullptr);
setbuf(stderr, nullptr);
// We don't have logcat yet under recovery. Update logs will always be written to stdout
// (which is redirected to recovery.log).
android::base::InitLogging(argv, &UpdaterLogger);
if (argc != 4 && argc != 5) {
LOG(ERROR) << "unexpected number of arguments: " << argc;
return 1;
}
char* version = argv[1];
if ((version[0] != '1' && version[0] != '2' && version[0] != '3') || version[1] != '\0') {
// We support version 1, 2, or 3.
LOG(ERROR) << "wrong updater binary API; expected 1, 2, or 3; got " << argv[1];
return 1;
}
int fd;
if (!android::base::ParseInt(argv[2], &fd)) {
LOG(ERROR) << "Failed to parse fd in " << argv[2];
return 1;
}
std::string package_name = argv[3];
bool is_retry = false;
if (argc == 5) {
if (strcmp(argv[4], "retry") == 0) {
is_retry = true;
} else {
LOG(ERROR) << "unexpected argument: " << argv[4];
return 1;
}
}
// Configure edify's functions.
RegisterBuiltins();
RegisterInstallFunctions();
RegisterBlockImageFunctions();
RegisterDynamicPartitionsFunctions();
RegisterDeviceExtensions();
auto sehandle = selinux_android_file_context_handle();
selinux_android_set_sehandle(sehandle);
Updater updater;
if (!updater.Init(fd, package_name, is_retry, sehandle)) {
return 1;
}
if (!updater.RunUpdate()) {
return 1;
}
return 0;
}
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