| /* |
| * Copyright (C) 2017 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 "VintfObjectRecovery.h" |
| |
| #include <sys/mount.h> |
| #include <fs_mgr.h> |
| |
| #include "utils.h" |
| |
| namespace android { |
| namespace vintf { |
| |
| namespace details { |
| using FstabMgr = std::unique_ptr<struct fstab, decltype(&fs_mgr_free_fstab)>; |
| |
| static status_t mountAt(const FstabMgr &fstab, const char* path, const char* mount_point) { |
| fstab_rec* rec = fs_mgr_get_entry_for_mount_point(fstab.get(), path); |
| if (rec == nullptr) { |
| return UNKNOWN_ERROR; |
| } |
| int result = mount(rec->blk_device, mount_point, rec->fs_type, rec->flags, rec->fs_options); |
| return result == 0 ? OK : -errno; |
| } |
| |
| static FstabMgr defaultFstabMgr() { |
| return FstabMgr{fs_mgr_read_fstab_default(), &fs_mgr_free_fstab}; |
| } |
| |
| class RecoveryPartitionMounter : public PartitionMounter { |
| public: |
| status_t mountSystem() const override { |
| FstabMgr fstab = defaultFstabMgr(); |
| if (fstab == NULL) { |
| return UNKNOWN_ERROR; |
| } |
| if (getPropertyFetcher().getBoolProperty("ro.build.system_root_image", false)) { |
| return mountAt(fstab, "/", "/system_root"); |
| } else { |
| return mountAt(fstab, "/system", "/system"); |
| } |
| } |
| |
| status_t mountVendor() const override { |
| FstabMgr fstab = defaultFstabMgr(); |
| if (fstab == NULL) { |
| return UNKNOWN_ERROR; |
| } |
| return mountAt(fstab, "/vendor", "/vendor"); |
| } |
| |
| status_t umountSystem() const override { |
| if (getPropertyFetcher().getBoolProperty("ro.build.system_root_image", false)) { |
| return umount("/system_root"); |
| } else { |
| return umount("/system"); |
| } |
| } |
| |
| status_t umountVendor() const override { |
| return umount("/vendor"); |
| } |
| }; |
| |
| } // namespace details |
| |
| // static |
| int32_t VintfObjectRecovery::CheckCompatibility( |
| const std::vector<std::string> &xmls, std::string *error) { |
| static details::RecoveryPartitionMounter mounter; |
| return details::checkCompatibility(xmls, true /* mount */, mounter, error); |
| } |
| |
| |
| } // namespace vintf |
| } // namespace android |