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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 "libgsi/libgsi.h"
#include <unistd.h>
#include <android-base/file.h>
#include "file_paths.h"
namespace android {
namespace gsi {
bool IsGsiRunning() {
return !access(kGsiBootedIndicatorFile, F_OK);
}
bool IsGsiInstalled() {
return !access(kGsiBootableFile, F_OK);
}
static bool CanBootIntoGsi(std::string* error) {
if (!IsGsiInstalled()) {
*error = "not detected";
return false;
}
// :TODO: boot attempts
return true;
}
bool CanBootIntoGsi(std::string* metadata_file, std::string* error) {
// Always delete this as a safety precaution, so we can return to the
// original system image. If we're confident GSI will boot, this will
// get re-created by MarkSystemAsGsi.
android::base::RemoveFileIfExists(kGsiBootedIndicatorFile);
if (!CanBootIntoGsi(error)) {
android::base::RemoveFileIfExists(kGsiBootableFile);
return false;
}
*metadata_file = kGsiMetadata;
return true;
}
bool UninstallGsi() {
if (!android::base::RemoveFileIfExists(kGsiBootableFile)) {
return false;
}
return true;
}
bool MarkSystemAsGsi() {
return android::base::WriteStringToFile("1", kGsiBootedIndicatorFile);
}
} // namespace gsi
} // namespace android
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