66 lines
1.7 KiB
C++
66 lines
1.7 KiB
C++
//
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// Copyright (C) 2016 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 "update_engine/utils_android.h"
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#include <cutils/properties.h>
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#include <fs_mgr.h>
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using std::string;
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namespace chromeos_update_engine {
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namespace {
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// Open the appropriate fstab file and fallback to /fstab.device if
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// that's what's being used.
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static struct fstab* OpenFSTab() {
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struct fstab* fstab = fs_mgr_read_fstab_default();
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if (fstab != nullptr)
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return fstab;
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fstab = fs_mgr_read_fstab("/fstab.device");
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return fstab;
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}
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} // namespace
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namespace utils {
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bool DeviceForMountPoint(const string& mount_point, base::FilePath* device) {
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struct fstab* fstab;
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struct fstab_rec* record;
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fstab = OpenFSTab();
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if (fstab == nullptr) {
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LOG(ERROR) << "Error opening fstab file.";
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return false;
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}
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record = fs_mgr_get_entry_for_mount_point(fstab, mount_point.c_str());
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if (record == nullptr) {
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LOG(ERROR) << "Error finding " << mount_point << " entry in fstab file.";
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fs_mgr_free_fstab(fstab);
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return false;
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}
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*device = base::FilePath(record->blk_device);
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fs_mgr_free_fstab(fstab);
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return true;
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}
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} // namespace utils
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} // namespace chromeos_update_engine
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