68 lines
1.9 KiB
C++
68 lines
1.9 KiB
C++
/*
|
|
* Copyright (C) 2021 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.
|
|
*/
|
|
|
|
/* this program is used to read a set of system properties and their values
|
|
* from the emulator program and set them in the currently-running emulated
|
|
* system. It does so by connecting to the 'boot-properties' qemud service.
|
|
*
|
|
* This program should be run as root and called from
|
|
* /system/etc/init.ranchu.rc exclusively.
|
|
*/
|
|
|
|
#define LOG_TAG "qemu-device-state"
|
|
|
|
#define DEBUG 0
|
|
//#define LOG_NDEBUG 0
|
|
|
|
#include <fstream>
|
|
#include <iostream>
|
|
#include <string.h>
|
|
|
|
#include <log/log.h>
|
|
|
|
#if DEBUG
|
|
# define DD(...) ALOGD(__VA_ARGS__)
|
|
#else
|
|
# define DD(...) ((void)0)
|
|
#endif
|
|
|
|
#define DEVIE_STATE_PROP "qemu.device_state"
|
|
// init will copy over this file to
|
|
// /data/system/devicestate/device_state_configuration.xml
|
|
#define DEVICE_STATE_FILE "/data/vendor/devicestate/device_state_configuration.xml"
|
|
|
|
extern bool fs_mgr_get_boot_config(const std::string& key, std::string* out_val);
|
|
|
|
int main(void) {
|
|
std::string deviceState;
|
|
if (!fs_mgr_get_boot_config(DEVIE_STATE_PROP, &deviceState)) {
|
|
ALOGV("%s bootconfig prop not set", DEVIE_STATE_PROP);
|
|
return 0;
|
|
}
|
|
|
|
std::ofstream f;
|
|
f.open(DEVICE_STATE_FILE);
|
|
if (!f.is_open()) {
|
|
ALOGE("Failed to open %s\n", DEVICE_STATE_FILE);
|
|
exit(1);
|
|
}
|
|
|
|
ALOGI("write to %s", DEVICE_STATE_FILE);
|
|
f << deviceState;
|
|
f.close();
|
|
return 0;
|
|
}
|