73 lines
1.9 KiB
C++
73 lines
1.9 KiB
C++
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/*
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* Copyright (C) 2021 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <fstream>
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#include <string>
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#include <log/log.h>
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#include <sys/stat.h>
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extern bool fs_mgr_get_boot_config(const std::string& key, std::string* out_val);
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namespace {
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int printUsage() {
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ALOGE("Usage: qemu-export-property [-f] property_name filename");
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return 1;
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}
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int exportPropertyImpl(const char* propName, const char* filename) {
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std::string propValue;
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if (!fs_mgr_get_boot_config(propName, &propValue)) {
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ALOGV("'%s' bootconfig property is not set", propName);
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return 0;
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}
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std::ofstream f;
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f.open(filename);
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if (f.is_open()) {
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f << propValue;
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f.close();
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return 0;
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} else {
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ALOGE("Failed to open '%s'\n", filename);
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return 1;
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}
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}
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} // namespace
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int main(const int argc, const char* argv[]) {
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if (argc < 2) {
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return printUsage();
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}
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if (strcmp(argv[1], "-f") == 0) {
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if (argc == 4) {
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return exportPropertyImpl(argv[2], argv[3]);
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} else {
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return printUsage();
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}
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} else if (argc == 3) {
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struct stat st;
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if (stat(argv[2], &st) == 0) {
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ALOGV("'%s' already exists", argv[2]);
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return 0;
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} else {
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return exportPropertyImpl(argv[1], argv[2]);
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}
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} else {
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return printUsage();
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}
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}
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