1 /* 2 * Copyright (C) 2012 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef __CORE_FS_MGR_PRIV_H 18 #define __CORE_FS_MGR_PRIV_H 19 20 #include <android-base/logging.h> 21 #include <fs_mgr.h> 22 #include "fs_mgr_priv_boot_config.h" 23 24 /* The CHECK() in logging.h will use program invocation name as the tag. 25 * Thus, the log will have prefix "init: " when libfs_mgr is statically 26 * linked in the init process. This might be opaque when debugging. 27 * Appends "in libfs_mgr" at the end of the abort message to explicitly 28 * indicate the check happens in fs_mgr. 29 */ 30 #define FS_MGR_CHECK(x) CHECK(x) << "in libfs_mgr " 31 32 #define FS_MGR_TAG "[libfs_mgr]" 33 34 // Logs a message to kernel 35 #define LINFO LOG(INFO) << FS_MGR_TAG 36 #define LWARNING LOG(WARNING) << FS_MGR_TAG 37 #define LERROR LOG(ERROR) << FS_MGR_TAG 38 39 // Logs a message with strerror(errno) at the end 40 #define PINFO PLOG(INFO) << FS_MGR_TAG 41 #define PWARNING PLOG(WARNING) << FS_MGR_TAG 42 #define PERROR PLOG(ERROR) << FS_MGR_TAG 43 44 #define CRYPTO_TMPFS_OPTIONS "size=256m,mode=0771,uid=1000,gid=1000" 45 46 #define WAIT_TIMEOUT 20 47 48 /* fstab has the following format: 49 * 50 * Any line starting with a # is a comment and ignored 51 * 52 * Any blank line is ignored 53 * 54 * All other lines must be in this format: 55 * <source> <mount_point> <fs_type> <mount_flags> <fs_options> <fs_mgr_options> 56 * 57 * <mount_flags> is a comma separated list of flags that can be passed to the 58 * mount command. The list includes noatime, nosuid, nodev, nodiratime, 59 * ro, rw, remount, defaults. 60 * 61 * <fs_options> is a comma separated list of options accepted by the filesystem being 62 * mounted. It is passed directly to mount without being parsed 63 * 64 * <fs_mgr_options> is a comma separated list of flags that control the operation of 65 * the fs_mgr program. The list includes "wait", which will wait till 66 * the <source> file exists, and "check", which requests that the fs_mgr 67 * run an fscheck program on the <source> before mounting the filesystem. 68 * If check is specifed on a read-only filesystem, it is ignored. 69 * Also, "encryptable" means that filesystem can be encrypted. 70 * The "encryptable" flag _MUST_ be followed by a = and a string which 71 * is the location of the encryption keys. It can either be a path 72 * to a file or partition which contains the keys, or the word "footer" 73 * which means the keys are in the last 16 Kbytes of the partition 74 * containing the filesystem. 75 * 76 * When the fs_mgr is requested to mount all filesystems, it will first mount all the 77 * filesystems that do _NOT_ specify check (including filesystems that are read-only and 78 * specify check, because check is ignored in that case) and then it will check and mount 79 * filesystem marked with check. 80 * 81 */ 82 83 #define MF_WAIT 0x1 84 #define MF_CHECK 0x2 85 #define MF_CRYPT 0x4 86 #define MF_NONREMOVABLE 0x8 87 #define MF_VOLDMANAGED 0x10 88 #define MF_LENGTH 0x20 89 #define MF_RECOVERYONLY 0x40 90 #define MF_SWAPPRIO 0x80 91 #define MF_ZRAMSIZE 0x100 92 #define MF_VERIFY 0x200 93 #define MF_FORCECRYPT 0x400 94 #define MF_NOEMULATEDSD 0x800 /* no emulated sdcard daemon, sd card is the only 95 external storage */ 96 #define MF_NOTRIM 0x1000 97 #define MF_FILEENCRYPTION 0x2000 98 #define MF_FORMATTABLE 0x4000 99 #define MF_SLOTSELECT 0x8000 100 #define MF_FORCEFDEORFBE 0x10000 101 #define MF_LATEMOUNT 0x20000 102 #define MF_NOFAIL 0x40000 103 #define MF_VERIFYATBOOT 0x80000 104 #define MF_MAX_COMP_STREAMS 0x100000 105 #define MF_RESERVEDSIZE 0x200000 106 #define MF_QUOTA 0x400000 107 #define MF_ERASEBLKSIZE 0x800000 108 #define MF_LOGICALBLKSIZE 0X1000000 109 #define MF_AVB 0X2000000 110 111 #define DM_BUF_SIZE 4096 112 113 int fs_mgr_set_blk_ro(const char *blockdev); 114 int fs_mgr_test_access(const char *device); 115 bool fs_mgr_update_for_slotselect(struct fstab *fstab); 116 bool is_dt_compatible(); 117 bool is_device_secure(); 118 int load_verity_state(struct fstab_rec* fstab, int* mode); 119 120 #endif /* __CORE_FS_MGR_PRIV_H */ 121