| /* |
| * Copyright (C) 2012 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. |
| */ |
| |
| #ifndef __CORE_FS_MGR_H |
| #define __CORE_FS_MGR_H |
| |
| #include <stdio.h> |
| #include <stdint.h> |
| #include <stdbool.h> |
| #include <linux/dm-ioctl.h> |
| |
| // Magic number at start of verity metadata |
| #define VERITY_METADATA_MAGIC_NUMBER 0xb001b001 |
| |
| // Replacement magic number at start of verity metadata to cleanly |
| // turn verity off in userdebug builds. |
| #define VERITY_METADATA_MAGIC_DISABLE 0x46464f56 // "VOFF" |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| // Verity modes |
| enum verity_mode { |
| VERITY_MODE_EIO = 0, |
| VERITY_MODE_LOGGING = 1, |
| VERITY_MODE_RESTART = 2, |
| VERITY_MODE_LAST = VERITY_MODE_RESTART, |
| VERITY_MODE_DEFAULT = VERITY_MODE_RESTART |
| }; |
| |
| // Mount modes |
| enum mount_mode { |
| MOUNT_MODE_DEFAULT = 0, |
| MOUNT_MODE_EARLY = 1, |
| MOUNT_MODE_LATE = 2 |
| }; |
| |
| /* |
| * The entries must be kept in the same order as they were seen in the fstab. |
| * Unless explicitly requested, a lookup on mount point should always |
| * return the 1st one. |
| */ |
| struct fstab { |
| int num_entries; |
| struct fstab_rec *recs; |
| char *fstab_filename; |
| }; |
| |
| struct fstab_rec { |
| char *blk_device; |
| char *mount_point; |
| char *fs_type; |
| unsigned long flags; |
| char *fs_options; |
| int fs_mgr_flags; |
| char *key_loc; |
| char *verity_loc; |
| long long length; |
| char *label; |
| int partnum; |
| int swap_prio; |
| int max_comp_streams; |
| unsigned int zram_size; |
| }; |
| |
| // Callback function for verity status |
| typedef void (*fs_mgr_verity_state_callback)(struct fstab_rec *fstab, |
| const char *mount_point, int mode, int status); |
| |
| struct fstab *fs_mgr_read_fstab_file(FILE *fstab_file); |
| struct fstab *fs_mgr_read_fstab(const char *fstab_path); |
| void fs_mgr_free_fstab(struct fstab *fstab); |
| |
| #define FS_MGR_MNTALL_DEV_FILE_ENCRYPTED 5 |
| #define FS_MGR_MNTALL_DEV_NEEDS_RECOVERY 4 |
| #define FS_MGR_MNTALL_DEV_NEEDS_ENCRYPTION 3 |
| #define FS_MGR_MNTALL_DEV_MIGHT_BE_ENCRYPTED 2 |
| #define FS_MGR_MNTALL_DEV_NOT_ENCRYPTED 1 |
| #define FS_MGR_MNTALL_DEV_NOT_ENCRYPTABLE 0 |
| #define FS_MGR_MNTALL_FAIL (-1) |
| int fs_mgr_mount_all(struct fstab *fstab, int mount_mode); |
| |
| #define FS_MGR_DOMNT_FAILED (-1) |
| #define FS_MGR_DOMNT_BUSY (-2) |
| int fs_mgr_do_mount(struct fstab *fstab, const char *n_name, char *n_blk_device, |
| char *tmp_mount_point); |
| int fs_mgr_do_tmpfs_mount(char *n_name); |
| int fs_mgr_unmount_all(struct fstab *fstab); |
| int fs_mgr_get_crypt_info(struct fstab *fstab, char *key_loc, |
| char *real_blk_device, int size); |
| int fs_mgr_load_verity_state(int *mode); |
| int fs_mgr_update_verity_state(fs_mgr_verity_state_callback callback); |
| int fs_mgr_add_entry(struct fstab *fstab, |
| const char *mount_point, const char *fs_type, |
| const char *blk_device); |
| struct fstab_rec *fs_mgr_get_entry_for_mount_point(struct fstab *fstab, const char *path); |
| int fs_mgr_is_voldmanaged(const struct fstab_rec *fstab); |
| int fs_mgr_is_nonremovable(const struct fstab_rec *fstab); |
| int fs_mgr_is_verified(const struct fstab_rec *fstab); |
| int fs_mgr_is_encryptable(const struct fstab_rec *fstab); |
| int fs_mgr_is_file_encrypted(const struct fstab_rec *fstab); |
| int fs_mgr_is_convertible_to_fbe(const struct fstab_rec *fstab); |
| int fs_mgr_is_noemulatedsd(const struct fstab_rec *fstab); |
| int fs_mgr_is_notrim(struct fstab_rec *fstab); |
| int fs_mgr_is_formattable(struct fstab_rec *fstab); |
| int fs_mgr_is_nofail(struct fstab_rec *fstab); |
| int fs_mgr_is_latemount(struct fstab_rec *fstab); |
| int fs_mgr_swapon_all(struct fstab *fstab); |
| |
| int fs_mgr_do_format(struct fstab_rec *fstab, bool reserve_footer); |
| |
| #define FS_MGR_EARLY_SETUP_VERITY_NO_VERITY -2 |
| #define FS_MGR_EARLY_SETUP_VERITY_FAIL -1 |
| #define FS_MGR_EARLY_SETUP_VERITY_SUCCESS 0 |
| int fs_mgr_early_setup_verity(struct fstab_rec *fstab); |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* __CORE_FS_MGR_H */ |