| /* |
| * Copyright (C) 2022 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. |
| */ |
| |
| #pragma once |
| |
| #include <string> |
| |
| #include <fstab/fstab.h> |
| |
| constexpr char kOverlayfsFileContext[] = "u:object_r:overlayfs_file:s0"; |
| |
| constexpr char kScratchMountPoint[] = "/mnt/scratch"; |
| constexpr char kOverlayTopDir[] = "overlay"; |
| constexpr char kUpperName[] = "upper"; |
| constexpr char kWorkName[] = "work"; |
| |
| #if ALLOW_ADBD_DISABLE_VERITY |
| constexpr bool kAllowOverlayfs = true; |
| #else |
| constexpr bool kAllowOverlayfs = false; |
| #endif |
| |
| class AutoSetFsCreateCon final { |
| public: |
| AutoSetFsCreateCon() {} |
| AutoSetFsCreateCon(const std::string& context) { Set(context); } |
| ~AutoSetFsCreateCon() { Restore(); } |
| |
| bool Ok() const { return ok_; } |
| bool Set(const std::string& context); |
| bool Restore(); |
| |
| private: |
| bool ok_ = false; |
| bool restored_ = false; |
| }; |
| |
| bool fs_mgr_is_dsu_running(); |
| bool fs_mgr_filesystem_has_space(const std::string& mount_point); |
| const std::string fs_mgr_mount_point(const std::string& mount_point); |
| bool OverlayfsSetupAllowed(bool verbose = false); |
| bool MountScratch(const std::string& device_path, bool readonly = false); |
| bool fs_mgr_overlayfs_umount_scratch(); |
| std::vector<const std::string> OverlayMountPoints(); |
| bool fs_mgr_overlayfs_already_mounted(const std::string& mount_point, bool overlay_only = true); |
| bool fs_mgr_wants_overlayfs(android::fs_mgr::FstabEntry* entry); |
| android::fs_mgr::Fstab fs_mgr_overlayfs_candidate_list(const android::fs_mgr::Fstab& fstab); |