blob: f0afac1edfe9a44717ba4924a5828c0e0b7069f6 [file] [log] [blame]
/*
* 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);