Colin Cross | ec0a2e8 | 2010-06-11 14:21:37 -0700 | [diff] [blame] | 1 | /**************************************************************************** |
| 2 | **************************************************************************** |
| 3 | *** |
| 4 | *** This header was automatically generated from a Linux kernel header |
| 5 | *** of the same name, to make information necessary for userspace to |
| 6 | *** call into the kernel available to libc. It contains only constants, |
| 7 | *** structures, and macros generated from the original header, and thus, |
| 8 | *** contains no copyrightable information. |
| 9 | *** |
| 10 | **************************************************************************** |
| 11 | ****************************************************************************/ |
| 12 | #ifndef _EXT4_H |
| 13 | #define _EXT4_H |
| 14 | |
| 15 | #include <sys/types.h> |
| 16 | |
| 17 | #undef EXT4FS_DEBUG |
| 18 | |
| 19 | #ifdef EXT4FS_DEBUG |
| 20 | #define ext4_debug(f, a...) do { printk(KERN_DEBUG "EXT4-fs DEBUG (%s, %d): %s:", __FILE__, __LINE__, __func__); printk(KERN_DEBUG f, ## a); } while (0) |
| 21 | #else |
| 22 | #define ext4_debug(f, a...) do {} while (0) |
| 23 | #endif |
| 24 | |
| 25 | #define EXT4_ERROR_INODE(inode, fmt, a...) ext4_error_inode(__func__, (inode), (fmt), ## a); |
| 26 | |
| 27 | #define EXT4_ERROR_FILE(file, fmt, a...) ext4_error_file(__func__, (file), (fmt), ## a); |
| 28 | |
| 29 | typedef int ext4_grpblk_t; |
| 30 | |
| 31 | typedef unsigned long long ext4_fsblk_t; |
| 32 | |
| 33 | typedef __u32 ext4_lblk_t; |
| 34 | |
| 35 | typedef unsigned int ext4_group_t; |
| 36 | |
| 37 | #define EXT4_MB_HINT_MERGE 0x0001 |
| 38 | |
| 39 | #define EXT4_MB_HINT_RESERVED 0x0002 |
| 40 | |
| 41 | #define EXT4_MB_HINT_METADATA 0x0004 |
| 42 | |
| 43 | #define EXT4_MB_HINT_FIRST 0x0008 |
| 44 | |
| 45 | #define EXT4_MB_HINT_BEST 0x0010 |
| 46 | |
| 47 | #define EXT4_MB_HINT_DATA 0x0020 |
| 48 | |
| 49 | #define EXT4_MB_HINT_NOPREALLOC 0x0040 |
| 50 | |
| 51 | #define EXT4_MB_HINT_GROUP_ALLOC 0x0080 |
| 52 | |
| 53 | #define EXT4_MB_HINT_GOAL_ONLY 0x0100 |
| 54 | |
| 55 | #define EXT4_MB_HINT_TRY_GOAL 0x0200 |
| 56 | |
| 57 | #define EXT4_MB_DELALLOC_RESERVED 0x0400 |
| 58 | |
| 59 | #define EXT4_MB_STREAM_ALLOC 0x0800 |
| 60 | |
| 61 | struct ext4_allocation_request { |
| 62 | |
| 63 | struct inode *inode; |
| 64 | |
| 65 | unsigned int len; |
| 66 | |
| 67 | ext4_lblk_t logical; |
| 68 | |
| 69 | ext4_lblk_t lleft; |
| 70 | |
| 71 | ext4_lblk_t lright; |
| 72 | |
| 73 | ext4_fsblk_t goal; |
| 74 | |
| 75 | ext4_fsblk_t pleft; |
| 76 | |
| 77 | ext4_fsblk_t pright; |
| 78 | |
| 79 | unsigned int flags; |
| 80 | }; |
| 81 | |
| 82 | #define EXT4_BAD_INO 1 |
| 83 | #define EXT4_ROOT_INO 2 |
| 84 | #define EXT4_BOOT_LOADER_INO 5 |
| 85 | #define EXT4_UNDEL_DIR_INO 6 |
| 86 | #define EXT4_RESIZE_INO 7 |
| 87 | #define EXT4_JOURNAL_INO 8 |
| 88 | |
| 89 | #define EXT4_GOOD_OLD_FIRST_INO 11 |
| 90 | |
| 91 | #define EXT4_LINK_MAX 65000 |
| 92 | |
| 93 | #define EXT4_MIN_BLOCK_SIZE 1024 |
| 94 | #define EXT4_MAX_BLOCK_SIZE 65536 |
| 95 | #define EXT4_MIN_BLOCK_LOG_SIZE 10 |
| 96 | #define EXT4_BLOCK_SIZE(s) (EXT4_MIN_BLOCK_SIZE << (s)->s_log_block_size) |
| 97 | #define EXT4_ADDR_PER_BLOCK(s) (EXT4_BLOCK_SIZE(s) / sizeof(__u32)) |
| 98 | #define EXT4_BLOCK_SIZE_BITS(s) ((s)->s_log_block_size + 10) |
| 99 | #define EXT4_INODE_SIZE(s) (((s)->s_rev_level == EXT4_GOOD_OLD_REV) ? EXT4_GOOD_OLD_INODE_SIZE : (s)->s_inode_size) |
| 100 | #define EXT4_FIRST_INO(s) (((s)->s_rev_level == EXT4_GOOD_OLD_REV) ? EXT4_GOOD_OLD_FIRST_INO : (s)->s_first_ino) |
Paul Lawrence | 40ce87a | 2014-03-03 10:51:58 -0800 | [diff] [blame] | 101 | #define EXT4_BLOCK_ALIGN(size, blkbits) EXT4_ALIGN((size), (1 << (blkbits))) |
Colin Cross | ec0a2e8 | 2010-06-11 14:21:37 -0700 | [diff] [blame] | 102 | |
| 103 | struct ext4_group_desc |
| 104 | { |
| 105 | __le32 bg_block_bitmap_lo; |
| 106 | __le32 bg_inode_bitmap_lo; |
| 107 | __le32 bg_inode_table_lo; |
| 108 | __le16 bg_free_blocks_count_lo; |
| 109 | __le16 bg_free_inodes_count_lo; |
| 110 | __le16 bg_used_dirs_count_lo; |
| 111 | __le16 bg_flags; |
| 112 | __u32 bg_reserved[2]; |
| 113 | __le16 bg_itable_unused_lo; |
| 114 | __le16 bg_checksum; |
| 115 | __le32 bg_block_bitmap_hi; |
| 116 | __le32 bg_inode_bitmap_hi; |
| 117 | __le32 bg_inode_table_hi; |
| 118 | __le16 bg_free_blocks_count_hi; |
| 119 | __le16 bg_free_inodes_count_hi; |
| 120 | __le16 bg_used_dirs_count_hi; |
| 121 | __le16 bg_itable_unused_hi; |
| 122 | __u32 bg_reserved2[3]; |
| 123 | }; |
| 124 | |
| 125 | #define EXT4_BG_INODE_UNINIT 0x0001 |
| 126 | #define EXT4_BG_BLOCK_UNINIT 0x0002 |
| 127 | #define EXT4_BG_INODE_ZEROED 0x0004 |
| 128 | |
| 129 | #define EXT4_MIN_DESC_SIZE 32 |
| 130 | #define EXT4_MIN_DESC_SIZE_64BIT 64 |
| 131 | #define EXT4_MAX_DESC_SIZE EXT4_MIN_BLOCK_SIZE |
| 132 | #define EXT4_DESC_SIZE(s) (EXT4_SB(s)->s_desc_size) |
| 133 | #define EXT4_BLOCKS_PER_GROUP(s) ((s)->s_blocks_per_group) |
| 134 | #define EXT4_DESC_PER_BLOCK(s) (EXT4_BLOCK_SIZE(s) / EXT4_DESC_SIZE(s)) |
| 135 | #define EXT4_INODES_PER_GROUP(s) ((s)->s_inodes_per_group) |
| 136 | |
| 137 | #define EXT4_NDIR_BLOCKS 12 |
| 138 | #define EXT4_IND_BLOCK EXT4_NDIR_BLOCKS |
| 139 | #define EXT4_DIND_BLOCK (EXT4_IND_BLOCK + 1) |
| 140 | #define EXT4_TIND_BLOCK (EXT4_DIND_BLOCK + 1) |
| 141 | #define EXT4_N_BLOCKS (EXT4_TIND_BLOCK + 1) |
| 142 | |
| 143 | #define EXT4_SECRM_FL 0x00000001 |
| 144 | #define EXT4_UNRM_FL 0x00000002 |
| 145 | #define EXT4_COMPR_FL 0x00000004 |
| 146 | #define EXT4_SYNC_FL 0x00000008 |
| 147 | #define EXT4_IMMUTABLE_FL 0x00000010 |
| 148 | #define EXT4_APPEND_FL 0x00000020 |
| 149 | #define EXT4_NODUMP_FL 0x00000040 |
| 150 | #define EXT4_NOATIME_FL 0x00000080 |
| 151 | |
| 152 | #define EXT4_DIRTY_FL 0x00000100 |
| 153 | #define EXT4_COMPRBLK_FL 0x00000200 |
| 154 | #define EXT4_NOCOMPR_FL 0x00000400 |
| 155 | #define EXT4_ECOMPR_FL 0x00000800 |
| 156 | |
| 157 | #define EXT4_INDEX_FL 0x00001000 |
| 158 | #define EXT4_IMAGIC_FL 0x00002000 |
| 159 | #define EXT4_JOURNAL_DATA_FL 0x00004000 |
| 160 | #define EXT4_NOTAIL_FL 0x00008000 |
| 161 | #define EXT4_DIRSYNC_FL 0x00010000 |
| 162 | #define EXT4_TOPDIR_FL 0x00020000 |
| 163 | #define EXT4_HUGE_FILE_FL 0x00040000 |
| 164 | #define EXT4_EXTENTS_FL 0x00080000 |
| 165 | #define EXT4_EA_INODE_FL 0x00200000 |
| 166 | #define EXT4_EOFBLOCKS_FL 0x00400000 |
| 167 | #define EXT4_RESERVED_FL 0x80000000 |
| 168 | |
| 169 | #define EXT4_FL_USER_VISIBLE 0x004BDFFF |
| 170 | #define EXT4_FL_USER_MODIFIABLE 0x004B80FF |
| 171 | |
| 172 | #define EXT4_FL_INHERITED (EXT4_SECRM_FL | EXT4_UNRM_FL | EXT4_COMPR_FL | EXT4_SYNC_FL | EXT4_IMMUTABLE_FL | EXT4_APPEND_FL | EXT4_NODUMP_FL | EXT4_NOATIME_FL | EXT4_NOCOMPR_FL | EXT4_JOURNAL_DATA_FL | EXT4_NOTAIL_FL | EXT4_DIRSYNC_FL) |
| 173 | |
| 174 | #define EXT4_REG_FLMASK (~(EXT4_DIRSYNC_FL | EXT4_TOPDIR_FL)) |
| 175 | |
| 176 | #define EXT4_OTHER_FLMASK (EXT4_NODUMP_FL | EXT4_NOATIME_FL) |
| 177 | |
| 178 | struct ext4_new_group_data { |
| 179 | __u32 group; |
| 180 | __u64 block_bitmap; |
| 181 | __u64 inode_bitmap; |
| 182 | __u64 inode_table; |
| 183 | __u32 blocks_count; |
| 184 | __u16 reserved_blocks; |
| 185 | __u16 unused; |
| 186 | __u32 free_blocks_count; |
| 187 | }; |
| 188 | |
| 189 | #define EXT4_GET_BLOCKS_CREATE 0x0001 |
| 190 | |
| 191 | #define EXT4_GET_BLOCKS_UNINIT_EXT 0x0002 |
| 192 | #define EXT4_GET_BLOCKS_CREATE_UNINIT_EXT (EXT4_GET_BLOCKS_UNINIT_EXT| EXT4_GET_BLOCKS_CREATE) |
| 193 | |
| 194 | #define EXT4_GET_BLOCKS_DELALLOC_RESERVE 0x0004 |
| 195 | |
| 196 | #define EXT4_GET_BLOCKS_PRE_IO 0x0008 |
| 197 | #define EXT4_GET_BLOCKS_CONVERT 0x0010 |
| 198 | #define EXT4_GET_BLOCKS_IO_CREATE_EXT (EXT4_GET_BLOCKS_PRE_IO| EXT4_GET_BLOCKS_CREATE_UNINIT_EXT) |
| 199 | |
| 200 | #define EXT4_GET_BLOCKS_IO_CONVERT_EXT (EXT4_GET_BLOCKS_CONVERT| EXT4_GET_BLOCKS_CREATE_UNINIT_EXT) |
| 201 | |
| 202 | #define EXT4_FREE_BLOCKS_METADATA 0x0001 |
| 203 | #define EXT4_FREE_BLOCKS_FORGET 0x0002 |
| 204 | #define EXT4_FREE_BLOCKS_VALIDATED 0x0004 |
| 205 | |
| 206 | #define EXT4_IOC_GETFLAGS FS_IOC_GETFLAGS |
| 207 | #define EXT4_IOC_SETFLAGS FS_IOC_SETFLAGS |
| 208 | #define EXT4_IOC_GETVERSION _IOR('f', 3, long) |
| 209 | #define EXT4_IOC_SETVERSION _IOW('f', 4, long) |
| 210 | #define EXT4_IOC_GETVERSION_OLD FS_IOC_GETVERSION |
| 211 | #define EXT4_IOC_SETVERSION_OLD FS_IOC_SETVERSION |
| 212 | #define EXT4_IOC_GETRSVSZ _IOR('f', 5, long) |
| 213 | #define EXT4_IOC_SETRSVSZ _IOW('f', 6, long) |
| 214 | #define EXT4_IOC_GROUP_EXTEND _IOW('f', 7, unsigned long) |
| 215 | #define EXT4_IOC_GROUP_ADD _IOW('f', 8, struct ext4_new_group_input) |
| 216 | #define EXT4_IOC_MIGRATE _IO('f', 9) |
| 217 | |
| 218 | #define EXT4_IOC_ALLOC_DA_BLKS _IO('f', 12) |
| 219 | #define EXT4_IOC_MOVE_EXT _IOWR('f', 15, struct move_extent) |
| 220 | |
| 221 | #define EXT4_IOC32_GETFLAGS FS_IOC32_GETFLAGS |
| 222 | #define EXT4_IOC32_SETFLAGS FS_IOC32_SETFLAGS |
| 223 | #define EXT4_IOC32_GETVERSION _IOR('f', 3, int) |
| 224 | #define EXT4_IOC32_SETVERSION _IOW('f', 4, int) |
| 225 | #define EXT4_IOC32_GETRSVSZ _IOR('f', 5, int) |
| 226 | #define EXT4_IOC32_SETRSVSZ _IOW('f', 6, int) |
| 227 | #define EXT4_IOC32_GROUP_EXTEND _IOW('f', 7, unsigned int) |
| 228 | #define EXT4_IOC32_GETVERSION_OLD FS_IOC32_GETVERSION |
| 229 | #define EXT4_IOC32_SETVERSION_OLD FS_IOC32_SETVERSION |
| 230 | |
| 231 | #define EXT4_MAX_BLOCK_FILE_PHYS 0xFFFFFFFF |
| 232 | |
| 233 | struct ext4_inode { |
| 234 | __le16 i_mode; |
| 235 | __le16 i_uid; |
| 236 | __le32 i_size_lo; |
| 237 | __le32 i_atime; |
| 238 | __le32 i_ctime; |
| 239 | __le32 i_mtime; |
| 240 | __le32 i_dtime; |
| 241 | __le16 i_gid; |
| 242 | __le16 i_links_count; |
| 243 | __le32 i_blocks_lo; |
| 244 | __le32 i_flags; |
| 245 | union { |
| 246 | struct { |
| 247 | __le32 l_i_version; |
| 248 | } linux1; |
| 249 | struct { |
| 250 | __u32 h_i_translator; |
| 251 | } hurd1; |
| 252 | struct { |
| 253 | __u32 m_i_reserved1; |
| 254 | } masix1; |
| 255 | } osd1; |
| 256 | __le32 i_block[EXT4_N_BLOCKS]; |
| 257 | __le32 i_generation; |
| 258 | __le32 i_file_acl_lo; |
| 259 | __le32 i_size_high; |
| 260 | __le32 i_obso_faddr; |
| 261 | union { |
| 262 | struct { |
| 263 | __le16 l_i_blocks_high; |
| 264 | __le16 l_i_file_acl_high; |
| 265 | __le16 l_i_uid_high; |
| 266 | __le16 l_i_gid_high; |
| 267 | __u32 l_i_reserved2; |
| 268 | } linux2; |
| 269 | struct { |
| 270 | __le16 h_i_reserved1; |
| 271 | __u16 h_i_mode_high; |
| 272 | __u16 h_i_uid_high; |
| 273 | __u16 h_i_gid_high; |
| 274 | __u32 h_i_author; |
| 275 | } hurd2; |
| 276 | struct { |
| 277 | __le16 h_i_reserved1; |
| 278 | __le16 m_i_file_acl_high; |
| 279 | __u32 m_i_reserved2[2]; |
| 280 | } masix2; |
| 281 | } osd2; |
| 282 | __le16 i_extra_isize; |
| 283 | __le16 i_pad1; |
| 284 | __le32 i_ctime_extra; |
| 285 | __le32 i_mtime_extra; |
| 286 | __le32 i_atime_extra; |
| 287 | __le32 i_crtime; |
| 288 | __le32 i_crtime_extra; |
| 289 | __le32 i_version_hi; |
| 290 | }; |
| 291 | |
| 292 | struct move_extent { |
| 293 | __u32 reserved; |
| 294 | __u32 donor_fd; |
| 295 | __u64 orig_start; |
| 296 | __u64 donor_start; |
| 297 | __u64 len; |
| 298 | __u64 moved_len; |
| 299 | }; |
| 300 | |
| 301 | #define EXT4_EPOCH_BITS 2 |
| 302 | #define EXT4_EPOCH_MASK ((1 << EXT4_EPOCH_BITS) - 1) |
| 303 | #define EXT4_NSEC_MASK (~0UL << EXT4_EPOCH_BITS) |
| 304 | |
| 305 | #define EXT4_FITS_IN_INODE(ext4_inode, einode, field) ((offsetof(typeof(*ext4_inode), field) + sizeof((ext4_inode)->field)) <= (EXT4_GOOD_OLD_INODE_SIZE + (einode)->i_extra_isize)) |
| 306 | #define EXT4_INODE_SET_XTIME(xtime, inode, raw_inode) do { (raw_inode)->xtime = cpu_to_le32((inode)->xtime.tv_sec); if (EXT4_FITS_IN_INODE(raw_inode, EXT4_I(inode), xtime ## _extra)) (raw_inode)->xtime ## _extra = ext4_encode_extra_time(&(inode)->xtime); } while (0) |
| 307 | #define EXT4_EINODE_SET_XTIME(xtime, einode, raw_inode) do { if (EXT4_FITS_IN_INODE(raw_inode, einode, xtime)) (raw_inode)->xtime = cpu_to_le32((einode)->xtime.tv_sec); if (EXT4_FITS_IN_INODE(raw_inode, einode, xtime ## _extra)) (raw_inode)->xtime ## _extra = ext4_encode_extra_time(&(einode)->xtime); } while (0) |
| 308 | #define EXT4_INODE_GET_XTIME(xtime, inode, raw_inode) do { (inode)->xtime.tv_sec = (signed)le32_to_cpu((raw_inode)->xtime); if (EXT4_FITS_IN_INODE(raw_inode, EXT4_I(inode), xtime ## _extra)) ext4_decode_extra_time(&(inode)->xtime, raw_inode->xtime ## _extra); } while (0) |
| 309 | #define EXT4_EINODE_GET_XTIME(xtime, einode, raw_inode) do { if (EXT4_FITS_IN_INODE(raw_inode, einode, xtime)) (einode)->xtime.tv_sec = (signed)le32_to_cpu((raw_inode)->xtime); if (EXT4_FITS_IN_INODE(raw_inode, einode, xtime ## _extra)) ext4_decode_extra_time(&(einode)->xtime, raw_inode->xtime ## _extra); } while (0) |
| 310 | #define i_disk_version osd1.linux1.l_i_version |
| 311 | |
| 312 | #define i_reserved1 osd1.linux1.l_i_reserved1 |
| 313 | #define i_file_acl_high osd2.linux2.l_i_file_acl_high |
| 314 | #define i_blocks_high osd2.linux2.l_i_blocks_high |
| 315 | #define i_uid_low i_uid |
| 316 | #define i_gid_low i_gid |
| 317 | #define i_uid_high osd2.linux2.l_i_uid_high |
| 318 | #define i_gid_high osd2.linux2.l_i_gid_high |
| 319 | #define i_reserved2 osd2.linux2.l_i_reserved2 |
| 320 | |
| 321 | #define EXT4_VALID_FS 0x0001 |
| 322 | #define EXT4_ERROR_FS 0x0002 |
| 323 | #define EXT4_ORPHAN_FS 0x0004 |
| 324 | |
| 325 | #define EXT2_FLAGS_SIGNED_HASH 0x0001 |
| 326 | #define EXT2_FLAGS_UNSIGNED_HASH 0x0002 |
| 327 | #define EXT2_FLAGS_TEST_FILESYS 0x0004 |
| 328 | |
| 329 | #define EXT4_MOUNT_OLDALLOC 0x00002 |
| 330 | #define EXT4_MOUNT_GRPID 0x00004 |
| 331 | #define EXT4_MOUNT_DEBUG 0x00008 |
| 332 | #define EXT4_MOUNT_ERRORS_CONT 0x00010 |
| 333 | #define EXT4_MOUNT_ERRORS_RO 0x00020 |
| 334 | #define EXT4_MOUNT_ERRORS_PANIC 0x00040 |
| 335 | #define EXT4_MOUNT_MINIX_DF 0x00080 |
| 336 | #define EXT4_MOUNT_NOLOAD 0x00100 |
| 337 | #define EXT4_MOUNT_DATA_FLAGS 0x00C00 |
| 338 | #define EXT4_MOUNT_JOURNAL_DATA 0x00400 |
| 339 | #define EXT4_MOUNT_ORDERED_DATA 0x00800 |
| 340 | #define EXT4_MOUNT_WRITEBACK_DATA 0x00C00 |
| 341 | #define EXT4_MOUNT_UPDATE_JOURNAL 0x01000 |
| 342 | #define EXT4_MOUNT_NO_UID32 0x02000 |
| 343 | #define EXT4_MOUNT_XATTR_USER 0x04000 |
| 344 | #define EXT4_MOUNT_POSIX_ACL 0x08000 |
| 345 | #define EXT4_MOUNT_NO_AUTO_DA_ALLOC 0x10000 |
| 346 | #define EXT4_MOUNT_BARRIER 0x20000 |
| 347 | #define EXT4_MOUNT_NOBH 0x40000 |
| 348 | #define EXT4_MOUNT_QUOTA 0x80000 |
| 349 | #define EXT4_MOUNT_USRQUOTA 0x100000 |
| 350 | #define EXT4_MOUNT_GRPQUOTA 0x200000 |
| 351 | #define EXT4_MOUNT_DIOREAD_NOLOCK 0x400000 |
| 352 | #define EXT4_MOUNT_JOURNAL_CHECKSUM 0x800000 |
| 353 | #define EXT4_MOUNT_JOURNAL_ASYNC_COMMIT 0x1000000 |
| 354 | #define EXT4_MOUNT_I_VERSION 0x2000000 |
| 355 | #define EXT4_MOUNT_DELALLOC 0x8000000 |
| 356 | #define EXT4_MOUNT_DATA_ERR_ABORT 0x10000000 |
| 357 | #define EXT4_MOUNT_BLOCK_VALIDITY 0x20000000 |
| 358 | #define EXT4_MOUNT_DISCARD 0x40000000 |
| 359 | |
| 360 | #define clear_opt(o, opt) o &= ~EXT4_MOUNT_##opt |
| 361 | #define set_opt(o, opt) o |= EXT4_MOUNT_##opt |
| 362 | #define test_opt(sb, opt) (EXT4_SB(sb)->s_mount_opt & EXT4_MOUNT_##opt) |
| 363 | |
| 364 | #define ext4_set_bit ext2_set_bit |
| 365 | #define ext4_set_bit_atomic ext2_set_bit_atomic |
| 366 | #define ext4_clear_bit ext2_clear_bit |
| 367 | #define ext4_clear_bit_atomic ext2_clear_bit_atomic |
| 368 | #define ext4_test_bit ext2_test_bit |
| 369 | #define ext4_find_first_zero_bit ext2_find_first_zero_bit |
| 370 | #define ext4_find_next_zero_bit ext2_find_next_zero_bit |
| 371 | #define ext4_find_next_bit ext2_find_next_bit |
| 372 | |
| 373 | #define EXT4_DFL_MAX_MNT_COUNT 20 |
| 374 | #define EXT4_DFL_CHECKINTERVAL 0 |
| 375 | |
| 376 | #define EXT4_ERRORS_CONTINUE 1 |
| 377 | #define EXT4_ERRORS_RO 2 |
| 378 | #define EXT4_ERRORS_PANIC 3 |
| 379 | #define EXT4_ERRORS_DEFAULT EXT4_ERRORS_CONTINUE |
| 380 | |
| 381 | struct ext4_super_block { |
| 382 | __le32 s_inodes_count; |
| 383 | __le32 s_blocks_count_lo; |
| 384 | __le32 s_r_blocks_count_lo; |
| 385 | __le32 s_free_blocks_count_lo; |
| 386 | __le32 s_free_inodes_count; |
| 387 | __le32 s_first_data_block; |
| 388 | __le32 s_log_block_size; |
| 389 | __le32 s_obso_log_frag_size; |
| 390 | __le32 s_blocks_per_group; |
| 391 | __le32 s_obso_frags_per_group; |
| 392 | __le32 s_inodes_per_group; |
| 393 | __le32 s_mtime; |
| 394 | __le32 s_wtime; |
| 395 | __le16 s_mnt_count; |
| 396 | __le16 s_max_mnt_count; |
| 397 | __le16 s_magic; |
| 398 | __le16 s_state; |
| 399 | __le16 s_errors; |
| 400 | __le16 s_minor_rev_level; |
| 401 | __le32 s_lastcheck; |
| 402 | __le32 s_checkinterval; |
| 403 | __le32 s_creator_os; |
| 404 | __le32 s_rev_level; |
| 405 | __le16 s_def_resuid; |
| 406 | __le16 s_def_resgid; |
| 407 | |
| 408 | __le32 s_first_ino; |
| 409 | __le16 s_inode_size; |
| 410 | __le16 s_block_group_nr; |
| 411 | __le32 s_feature_compat; |
| 412 | __le32 s_feature_incompat; |
| 413 | __le32 s_feature_ro_compat; |
| 414 | __u8 s_uuid[16]; |
| 415 | char s_volume_name[16]; |
| 416 | char s_last_mounted[64]; |
| 417 | __le32 s_algorithm_usage_bitmap; |
| 418 | |
| 419 | __u8 s_prealloc_blocks; |
| 420 | __u8 s_prealloc_dir_blocks; |
| 421 | __le16 s_reserved_gdt_blocks; |
| 422 | |
| 423 | __u8 s_journal_uuid[16]; |
| 424 | __le32 s_journal_inum; |
| 425 | __le32 s_journal_dev; |
| 426 | __le32 s_last_orphan; |
| 427 | __le32 s_hash_seed[4]; |
| 428 | __u8 s_def_hash_version; |
| 429 | __u8 s_reserved_char_pad; |
| 430 | __le16 s_desc_size; |
| 431 | __le32 s_default_mount_opts; |
| 432 | __le32 s_first_meta_bg; |
| 433 | __le32 s_mkfs_time; |
| 434 | __le32 s_jnl_blocks[17]; |
| 435 | |
| 436 | __le32 s_blocks_count_hi; |
| 437 | __le32 s_r_blocks_count_hi; |
| 438 | __le32 s_free_blocks_count_hi; |
| 439 | __le16 s_min_extra_isize; |
| 440 | __le16 s_want_extra_isize; |
| 441 | __le32 s_flags; |
| 442 | __le16 s_raid_stride; |
| 443 | __le16 s_mmp_interval; |
| 444 | __le64 s_mmp_block; |
| 445 | __le32 s_raid_stripe_width; |
| 446 | __u8 s_log_groups_per_flex; |
| 447 | __u8 s_reserved_char_pad2; |
| 448 | __le16 s_reserved_pad; |
| 449 | __le64 s_kbytes_written; |
| 450 | __u32 s_reserved[160]; |
| 451 | }; |
| 452 | |
| 453 | #define EXT4_SB(sb) (sb) |
| 454 | |
| 455 | #define NEXT_ORPHAN(inode) EXT4_I(inode)->i_dtime |
| 456 | |
| 457 | #define EXT4_OS_LINUX 0 |
| 458 | #define EXT4_OS_HURD 1 |
| 459 | #define EXT4_OS_MASIX 2 |
| 460 | #define EXT4_OS_FREEBSD 3 |
| 461 | #define EXT4_OS_LITES 4 |
| 462 | |
| 463 | #define EXT4_GOOD_OLD_REV 0 |
| 464 | #define EXT4_DYNAMIC_REV 1 |
| 465 | |
| 466 | #define EXT4_CURRENT_REV EXT4_GOOD_OLD_REV |
| 467 | #define EXT4_MAX_SUPP_REV EXT4_DYNAMIC_REV |
| 468 | |
| 469 | #define EXT4_GOOD_OLD_INODE_SIZE 128 |
| 470 | |
| 471 | #define EXT4_HAS_COMPAT_FEATURE(sb,mask) ((EXT4_SB(sb)->s_es->s_feature_compat & cpu_to_le32(mask)) != 0) |
| 472 | #define EXT4_HAS_RO_COMPAT_FEATURE(sb,mask) ((EXT4_SB(sb)->s_es->s_feature_ro_compat & cpu_to_le32(mask)) != 0) |
| 473 | #define EXT4_HAS_INCOMPAT_FEATURE(sb,mask) ((EXT4_SB(sb)->s_es->s_feature_incompat & cpu_to_le32(mask)) != 0) |
| 474 | #define EXT4_SET_COMPAT_FEATURE(sb,mask) EXT4_SB(sb)->s_es->s_feature_compat |= cpu_to_le32(mask) |
| 475 | #define EXT4_SET_RO_COMPAT_FEATURE(sb,mask) EXT4_SB(sb)->s_es->s_feature_ro_compat |= cpu_to_le32(mask) |
| 476 | #define EXT4_SET_INCOMPAT_FEATURE(sb,mask) EXT4_SB(sb)->s_es->s_feature_incompat |= cpu_to_le32(mask) |
| 477 | #define EXT4_CLEAR_COMPAT_FEATURE(sb,mask) EXT4_SB(sb)->s_es->s_feature_compat &= ~cpu_to_le32(mask) |
| 478 | #define EXT4_CLEAR_RO_COMPAT_FEATURE(sb,mask) EXT4_SB(sb)->s_es->s_feature_ro_compat &= ~cpu_to_le32(mask) |
| 479 | #define EXT4_CLEAR_INCOMPAT_FEATURE(sb,mask) EXT4_SB(sb)->s_es->s_feature_incompat &= ~cpu_to_le32(mask) |
| 480 | |
| 481 | #define EXT4_FEATURE_COMPAT_DIR_PREALLOC 0x0001 |
| 482 | #define EXT4_FEATURE_COMPAT_IMAGIC_INODES 0x0002 |
| 483 | #define EXT4_FEATURE_COMPAT_HAS_JOURNAL 0x0004 |
| 484 | #define EXT4_FEATURE_COMPAT_EXT_ATTR 0x0008 |
| 485 | #define EXT4_FEATURE_COMPAT_RESIZE_INODE 0x0010 |
| 486 | #define EXT4_FEATURE_COMPAT_DIR_INDEX 0x0020 |
| 487 | |
| 488 | #define EXT4_FEATURE_RO_COMPAT_SPARSE_SUPER 0x0001 |
| 489 | #define EXT4_FEATURE_RO_COMPAT_LARGE_FILE 0x0002 |
| 490 | #define EXT4_FEATURE_RO_COMPAT_BTREE_DIR 0x0004 |
| 491 | #define EXT4_FEATURE_RO_COMPAT_HUGE_FILE 0x0008 |
| 492 | #define EXT4_FEATURE_RO_COMPAT_GDT_CSUM 0x0010 |
| 493 | #define EXT4_FEATURE_RO_COMPAT_DIR_NLINK 0x0020 |
| 494 | #define EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE 0x0040 |
| 495 | |
| 496 | #define EXT4_FEATURE_INCOMPAT_COMPRESSION 0x0001 |
| 497 | #define EXT4_FEATURE_INCOMPAT_FILETYPE 0x0002 |
| 498 | #define EXT4_FEATURE_INCOMPAT_RECOVER 0x0004 |
| 499 | #define EXT4_FEATURE_INCOMPAT_JOURNAL_DEV 0x0008 |
| 500 | #define EXT4_FEATURE_INCOMPAT_META_BG 0x0010 |
| 501 | #define EXT4_FEATURE_INCOMPAT_EXTENTS 0x0040 |
| 502 | #define EXT4_FEATURE_INCOMPAT_64BIT 0x0080 |
| 503 | #define EXT4_FEATURE_INCOMPAT_MMP 0x0100 |
| 504 | #define EXT4_FEATURE_INCOMPAT_FLEX_BG 0x0200 |
| 505 | #define EXT4_FEATURE_INCOMPAT_EA_INODE 0x0400 |
| 506 | #define EXT4_FEATURE_INCOMPAT_DIRDATA 0x1000 |
| 507 | |
| 508 | #define EXT4_FEATURE_COMPAT_SUPP EXT2_FEATURE_COMPAT_EXT_ATTR |
| 509 | #define EXT4_FEATURE_INCOMPAT_SUPP (EXT4_FEATURE_INCOMPAT_FILETYPE| EXT4_FEATURE_INCOMPAT_RECOVER| EXT4_FEATURE_INCOMPAT_META_BG| EXT4_FEATURE_INCOMPAT_EXTENTS| EXT4_FEATURE_INCOMPAT_64BIT| EXT4_FEATURE_INCOMPAT_FLEX_BG) |
| 510 | #define EXT4_FEATURE_RO_COMPAT_SUPP (EXT4_FEATURE_RO_COMPAT_SPARSE_SUPER| EXT4_FEATURE_RO_COMPAT_LARGE_FILE| EXT4_FEATURE_RO_COMPAT_GDT_CSUM| EXT4_FEATURE_RO_COMPAT_DIR_NLINK | EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE | EXT4_FEATURE_RO_COMPAT_BTREE_DIR | EXT4_FEATURE_RO_COMPAT_HUGE_FILE) |
| 511 | |
| 512 | #define EXT4_DEF_RESUID 0 |
| 513 | #define EXT4_DEF_RESGID 0 |
| 514 | |
| 515 | #define EXT4_DEF_INODE_READAHEAD_BLKS 32 |
| 516 | |
| 517 | #define EXT4_DEFM_DEBUG 0x0001 |
| 518 | #define EXT4_DEFM_BSDGROUPS 0x0002 |
| 519 | #define EXT4_DEFM_XATTR_USER 0x0004 |
| 520 | #define EXT4_DEFM_ACL 0x0008 |
| 521 | #define EXT4_DEFM_UID16 0x0010 |
| 522 | #define EXT4_DEFM_JMODE 0x0060 |
| 523 | #define EXT4_DEFM_JMODE_DATA 0x0020 |
| 524 | #define EXT4_DEFM_JMODE_ORDERED 0x0040 |
| 525 | #define EXT4_DEFM_JMODE_WBACK 0x0060 |
| 526 | |
| 527 | #define EXT4_DEF_MIN_BATCH_TIME 0 |
| 528 | #define EXT4_DEF_MAX_BATCH_TIME 15000 |
| 529 | |
| 530 | #define EXT4_FLEX_SIZE_DIR_ALLOC_SCHEME 4 |
| 531 | |
| 532 | #define EXT4_NAME_LEN 255 |
| 533 | |
| 534 | struct ext4_dir_entry { |
| 535 | __le32 inode; |
| 536 | __le16 rec_len; |
| 537 | __le16 name_len; |
| 538 | char name[EXT4_NAME_LEN]; |
| 539 | }; |
| 540 | |
| 541 | struct ext4_dir_entry_2 { |
| 542 | __le32 inode; |
| 543 | __le16 rec_len; |
| 544 | __u8 name_len; |
| 545 | __u8 file_type; |
| 546 | char name[EXT4_NAME_LEN]; |
| 547 | }; |
| 548 | |
| 549 | #define EXT4_FT_UNKNOWN 0 |
| 550 | #define EXT4_FT_REG_FILE 1 |
| 551 | #define EXT4_FT_DIR 2 |
| 552 | #define EXT4_FT_CHRDEV 3 |
| 553 | #define EXT4_FT_BLKDEV 4 |
| 554 | #define EXT4_FT_FIFO 5 |
| 555 | #define EXT4_FT_SOCK 6 |
| 556 | #define EXT4_FT_SYMLINK 7 |
| 557 | |
| 558 | #define EXT4_FT_MAX 8 |
| 559 | |
| 560 | #define EXT4_DIR_PAD 4 |
| 561 | #define EXT4_DIR_ROUND (EXT4_DIR_PAD - 1) |
| 562 | #define EXT4_DIR_REC_LEN(name_len) (((name_len) + 8 + EXT4_DIR_ROUND) & ~EXT4_DIR_ROUND) |
| 563 | #define EXT4_MAX_REC_LEN ((1<<16)-1) |
| 564 | |
| 565 | #define is_dx(dir) (EXT4_HAS_COMPAT_FEATURE(dir->i_sb, EXT4_FEATURE_COMPAT_DIR_INDEX) && (EXT4_I(dir)->i_flags & EXT4_INDEX_FL)) |
| 566 | #define EXT4_DIR_LINK_MAX(dir) (!is_dx(dir) && (dir)->i_nlink >= EXT4_LINK_MAX) |
| 567 | #define EXT4_DIR_LINK_EMPTY(dir) ((dir)->i_nlink == 2 || (dir)->i_nlink == 1) |
| 568 | |
| 569 | #define DX_HASH_LEGACY 0 |
| 570 | #define DX_HASH_HALF_MD4 1 |
| 571 | #define DX_HASH_TEA 2 |
| 572 | #define DX_HASH_LEGACY_UNSIGNED 3 |
| 573 | #define DX_HASH_HALF_MD4_UNSIGNED 4 |
| 574 | #define DX_HASH_TEA_UNSIGNED 5 |
| 575 | |
| 576 | #endif |
| 577 | |