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...) \ 21 do { \ 22 printk(KERN_DEBUG "EXT4-fs DEBUG (%s, %d): %s:", __FILE__, __LINE__, __func__); \ 23 printk(KERN_DEBUG f, ##a); \ 24 } while (0) 25 #else 26 #define ext4_debug(f, a...) \ 27 do { \ 28 } while (0) 29 #endif 30 31 #define EXT4_ERROR_INODE(inode, fmt, a...) ext4_error_inode(__func__, (inode), (fmt), ##a); 32 33 #define EXT4_ERROR_FILE(file, fmt, a...) ext4_error_file(__func__, (file), (fmt), ##a); 34 35 typedef int ext4_grpblk_t; 36 37 typedef unsigned long long ext4_fsblk_t; 38 39 typedef __u32 ext4_lblk_t; 40 41 typedef unsigned int ext4_group_t; 42 43 #define EXT4_MB_HINT_MERGE 0x0001 44 45 #define EXT4_MB_HINT_RESERVED 0x0002 46 47 #define EXT4_MB_HINT_METADATA 0x0004 48 49 #define EXT4_MB_HINT_FIRST 0x0008 50 51 #define EXT4_MB_HINT_BEST 0x0010 52 53 #define EXT4_MB_HINT_DATA 0x0020 54 55 #define EXT4_MB_HINT_NOPREALLOC 0x0040 56 57 #define EXT4_MB_HINT_GROUP_ALLOC 0x0080 58 59 #define EXT4_MB_HINT_GOAL_ONLY 0x0100 60 61 #define EXT4_MB_HINT_TRY_GOAL 0x0200 62 63 #define EXT4_MB_DELALLOC_RESERVED 0x0400 64 65 #define EXT4_MB_STREAM_ALLOC 0x0800 66 67 struct ext4_allocation_request { 68 struct inode* inode; 69 70 unsigned int len; 71 72 ext4_lblk_t logical; 73 74 ext4_lblk_t lleft; 75 76 ext4_lblk_t lright; 77 78 ext4_fsblk_t goal; 79 80 ext4_fsblk_t pleft; 81 82 ext4_fsblk_t pright; 83 84 unsigned int flags; 85 }; 86 87 #define EXT4_BAD_INO 1 88 #define EXT4_ROOT_INO 2 89 #define EXT4_BOOT_LOADER_INO 5 90 #define EXT4_UNDEL_DIR_INO 6 91 #define EXT4_RESIZE_INO 7 92 #define EXT4_JOURNAL_INO 8 93 94 #define EXT4_GOOD_OLD_FIRST_INO 11 95 96 #define EXT4_LINK_MAX 65000 97 98 #define EXT4_MIN_BLOCK_SIZE 1024 99 #define EXT4_MAX_BLOCK_SIZE 65536 100 #define EXT4_MIN_BLOCK_LOG_SIZE 10 101 #define EXT4_BLOCK_SIZE(s) (EXT4_MIN_BLOCK_SIZE << (s)->s_log_block_size) 102 #define EXT4_ADDR_PER_BLOCK(s) (EXT4_BLOCK_SIZE(s) / sizeof(__u32)) 103 #define EXT4_BLOCK_SIZE_BITS(s) ((s)->s_log_block_size + 10) 104 #define EXT4_INODE_SIZE(s) \ 105 (((s)->s_rev_level == EXT4_GOOD_OLD_REV) ? EXT4_GOOD_OLD_INODE_SIZE : (s)->s_inode_size) 106 #define EXT4_FIRST_INO(s) \ 107 (((s)->s_rev_level == EXT4_GOOD_OLD_REV) ? EXT4_GOOD_OLD_FIRST_INO : (s)->s_first_ino) 108 #define EXT4_BLOCK_ALIGN(size, blkbits) EXT4_ALIGN((size), (1 << (blkbits))) 109 110 struct ext4_group_desc { 111 __le32 bg_block_bitmap_lo; 112 __le32 bg_inode_bitmap_lo; 113 __le32 bg_inode_table_lo; 114 __le16 bg_free_blocks_count_lo; 115 __le16 bg_free_inodes_count_lo; 116 __le16 bg_used_dirs_count_lo; 117 __le16 bg_flags; 118 __u32 bg_reserved[2]; 119 __le16 bg_itable_unused_lo; 120 __le16 bg_checksum; 121 __le32 bg_block_bitmap_hi; 122 __le32 bg_inode_bitmap_hi; 123 __le32 bg_inode_table_hi; 124 __le16 bg_free_blocks_count_hi; 125 __le16 bg_free_inodes_count_hi; 126 __le16 bg_used_dirs_count_hi; 127 __le16 bg_itable_unused_hi; 128 __u32 bg_reserved2[3]; 129 }; 130 131 #define EXT4_BG_INODE_UNINIT 0x0001 132 #define EXT4_BG_BLOCK_UNINIT 0x0002 133 #define EXT4_BG_INODE_ZEROED 0x0004 134 135 #define EXT4_MIN_DESC_SIZE 32 136 #define EXT4_MIN_DESC_SIZE_64BIT 64 137 #define EXT4_MAX_DESC_SIZE EXT4_MIN_BLOCK_SIZE 138 #define EXT4_DESC_SIZE(s) (EXT4_SB(s)->s_desc_size) 139 #define EXT4_BLOCKS_PER_GROUP(s) ((s)->s_blocks_per_group) 140 #define EXT4_DESC_PER_BLOCK(s) (EXT4_BLOCK_SIZE(s) / EXT4_DESC_SIZE(s)) 141 #define EXT4_INODES_PER_GROUP(s) ((s)->s_inodes_per_group) 142 143 #define EXT4_NDIR_BLOCKS 12 144 #define EXT4_IND_BLOCK EXT4_NDIR_BLOCKS 145 #define EXT4_DIND_BLOCK (EXT4_IND_BLOCK + 1) 146 #define EXT4_TIND_BLOCK (EXT4_DIND_BLOCK + 1) 147 #define EXT4_N_BLOCKS (EXT4_TIND_BLOCK + 1) 148 149 #define EXT4_SECRM_FL 0x00000001 150 #define EXT4_UNRM_FL 0x00000002 151 #define EXT4_COMPR_FL 0x00000004 152 #define EXT4_SYNC_FL 0x00000008 153 #define EXT4_IMMUTABLE_FL 0x00000010 154 #define EXT4_APPEND_FL 0x00000020 155 #define EXT4_NODUMP_FL 0x00000040 156 #define EXT4_NOATIME_FL 0x00000080 157 158 #define EXT4_DIRTY_FL 0x00000100 159 #define EXT4_COMPRBLK_FL 0x00000200 160 #define EXT4_NOCOMPR_FL 0x00000400 161 #define EXT4_ECOMPR_FL 0x00000800 162 163 #define EXT4_INDEX_FL 0x00001000 164 #define EXT4_IMAGIC_FL 0x00002000 165 #define EXT4_JOURNAL_DATA_FL 0x00004000 166 #define EXT4_NOTAIL_FL 0x00008000 167 #define EXT4_DIRSYNC_FL 0x00010000 168 #define EXT4_TOPDIR_FL 0x00020000 169 #define EXT4_HUGE_FILE_FL 0x00040000 170 #define EXT4_EXTENTS_FL 0x00080000 171 #define EXT4_EA_INODE_FL 0x00200000 172 #define EXT4_EOFBLOCKS_FL 0x00400000 173 #define EXT4_RESERVED_FL 0x80000000 174 175 #define EXT4_FL_USER_VISIBLE 0x004BDFFF 176 #define EXT4_FL_USER_MODIFIABLE 0x004B80FF 177 178 #define EXT4_FL_INHERITED \ 179 (EXT4_SECRM_FL | EXT4_UNRM_FL | EXT4_COMPR_FL | EXT4_SYNC_FL | EXT4_IMMUTABLE_FL | \ 180 EXT4_APPEND_FL | EXT4_NODUMP_FL | EXT4_NOATIME_FL | EXT4_NOCOMPR_FL | EXT4_JOURNAL_DATA_FL | \ 181 EXT4_NOTAIL_FL | EXT4_DIRSYNC_FL) 182 183 #define EXT4_REG_FLMASK (~(EXT4_DIRSYNC_FL | EXT4_TOPDIR_FL)) 184 185 #define EXT4_OTHER_FLMASK (EXT4_NODUMP_FL | EXT4_NOATIME_FL) 186 187 struct ext4_new_group_data { 188 __u32 group; 189 __u64 block_bitmap; 190 __u64 inode_bitmap; 191 __u64 inode_table; 192 __u32 blocks_count; 193 __u16 reserved_blocks; 194 __u16 unused; 195 __u32 free_blocks_count; 196 }; 197 198 #define EXT4_GET_BLOCKS_CREATE 0x0001 199 200 #define EXT4_GET_BLOCKS_UNINIT_EXT 0x0002 201 #define EXT4_GET_BLOCKS_CREATE_UNINIT_EXT (EXT4_GET_BLOCKS_UNINIT_EXT | EXT4_GET_BLOCKS_CREATE) 202 203 #define EXT4_GET_BLOCKS_DELALLOC_RESERVE 0x0004 204 205 #define EXT4_GET_BLOCKS_PRE_IO 0x0008 206 #define EXT4_GET_BLOCKS_CONVERT 0x0010 207 #define EXT4_GET_BLOCKS_IO_CREATE_EXT (EXT4_GET_BLOCKS_PRE_IO | EXT4_GET_BLOCKS_CREATE_UNINIT_EXT) 208 209 #define EXT4_GET_BLOCKS_IO_CONVERT_EXT (EXT4_GET_BLOCKS_CONVERT | EXT4_GET_BLOCKS_CREATE_UNINIT_EXT) 210 211 #define EXT4_FREE_BLOCKS_METADATA 0x0001 212 #define EXT4_FREE_BLOCKS_FORGET 0x0002 213 #define EXT4_FREE_BLOCKS_VALIDATED 0x0004 214 215 #define EXT4_IOC_GETFLAGS FS_IOC_GETFLAGS 216 #define EXT4_IOC_SETFLAGS FS_IOC_SETFLAGS 217 #define EXT4_IOC_GETVERSION _IOR('f', 3, long) 218 #define EXT4_IOC_SETVERSION _IOW('f', 4, long) 219 #define EXT4_IOC_GETVERSION_OLD FS_IOC_GETVERSION 220 #define EXT4_IOC_SETVERSION_OLD FS_IOC_SETVERSION 221 #define EXT4_IOC_GETRSVSZ _IOR('f', 5, long) 222 #define EXT4_IOC_SETRSVSZ _IOW('f', 6, long) 223 #define EXT4_IOC_GROUP_EXTEND _IOW('f', 7, unsigned long) 224 #define EXT4_IOC_GROUP_ADD _IOW('f', 8, struct ext4_new_group_input) 225 #define EXT4_IOC_MIGRATE _IO('f', 9) 226 227 #define EXT4_IOC_ALLOC_DA_BLKS _IO('f', 12) 228 #define EXT4_IOC_MOVE_EXT _IOWR('f', 15, struct move_extent) 229 230 #define EXT4_IOC32_GETFLAGS FS_IOC32_GETFLAGS 231 #define EXT4_IOC32_SETFLAGS FS_IOC32_SETFLAGS 232 #define EXT4_IOC32_GETVERSION _IOR('f', 3, int) 233 #define EXT4_IOC32_SETVERSION _IOW('f', 4, int) 234 #define EXT4_IOC32_GETRSVSZ _IOR('f', 5, int) 235 #define EXT4_IOC32_SETRSVSZ _IOW('f', 6, int) 236 #define EXT4_IOC32_GROUP_EXTEND _IOW('f', 7, unsigned int) 237 #define EXT4_IOC32_GETVERSION_OLD FS_IOC32_GETVERSION 238 #define EXT4_IOC32_SETVERSION_OLD FS_IOC32_SETVERSION 239 240 #define EXT4_MAX_BLOCK_FILE_PHYS 0xFFFFFFFF 241 242 struct ext4_inode { 243 __le16 i_mode; 244 __le16 i_uid; 245 __le32 i_size_lo; 246 __le32 i_atime; 247 __le32 i_ctime; 248 __le32 i_mtime; 249 __le32 i_dtime; 250 __le16 i_gid; 251 __le16 i_links_count; 252 __le32 i_blocks_lo; 253 __le32 i_flags; 254 union { 255 struct { 256 __le32 l_i_version; 257 } linux1; 258 struct { 259 __u32 h_i_translator; 260 } hurd1; 261 struct { 262 __u32 m_i_reserved1; 263 } masix1; 264 } osd1; 265 __le32 i_block[EXT4_N_BLOCKS]; 266 __le32 i_generation; 267 __le32 i_file_acl_lo; 268 __le32 i_size_high; 269 __le32 i_obso_faddr; 270 union { 271 struct { 272 __le16 l_i_blocks_high; 273 __le16 l_i_file_acl_high; 274 __le16 l_i_uid_high; 275 __le16 l_i_gid_high; 276 __u32 l_i_reserved2; 277 } linux2; 278 struct { 279 __le16 h_i_reserved1; 280 __u16 h_i_mode_high; 281 __u16 h_i_uid_high; 282 __u16 h_i_gid_high; 283 __u32 h_i_author; 284 } hurd2; 285 struct { 286 __le16 h_i_reserved1; 287 __le16 m_i_file_acl_high; 288 __u32 m_i_reserved2[2]; 289 } masix2; 290 } osd2; 291 __le16 i_extra_isize; 292 __le16 i_pad1; 293 __le32 i_ctime_extra; 294 __le32 i_mtime_extra; 295 __le32 i_atime_extra; 296 __le32 i_crtime; 297 __le32 i_crtime_extra; 298 __le32 i_version_hi; 299 }; 300 301 struct move_extent { 302 __u32 reserved; 303 __u32 donor_fd; 304 __u64 orig_start; 305 __u64 donor_start; 306 __u64 len; 307 __u64 moved_len; 308 }; 309 310 #define EXT4_EPOCH_BITS 2 311 #define EXT4_EPOCH_MASK ((1 << EXT4_EPOCH_BITS) - 1) 312 #define EXT4_NSEC_MASK (~0UL << EXT4_EPOCH_BITS) 313 314 #define EXT4_FITS_IN_INODE(ext4_inode, einode, field) \ 315 ((offsetof(typeof(*(ext4_inode)), field) + sizeof((ext4_inode)->field)) <= \ 316 (EXT4_GOOD_OLD_INODE_SIZE + (einode)->i_extra_isize)) 317 #define EXT4_INODE_SET_XTIME(xtime, inode, raw_inode) \ 318 do { \ 319 (raw_inode)->xtime = cpu_to_le32((inode)->xtime.tv_sec); \ 320 if (EXT4_FITS_IN_INODE(raw_inode, EXT4_I(inode), xtime##_extra)) \ 321 (raw_inode)->xtime##_extra = ext4_encode_extra_time(&(inode)->xtime); \ 322 } while (0) 323 #define EXT4_EINODE_SET_XTIME(xtime, einode, raw_inode) \ 324 do { \ 325 if (EXT4_FITS_IN_INODE(raw_inode, einode, xtime)) \ 326 (raw_inode)->xtime = cpu_to_le32((einode)->xtime.tv_sec); \ 327 if (EXT4_FITS_IN_INODE(raw_inode, einode, xtime##_extra)) \ 328 (raw_inode)->xtime##_extra = ext4_encode_extra_time(&(einode)->xtime); \ 329 } while (0) 330 #define EXT4_INODE_GET_XTIME(xtime, inode, raw_inode) \ 331 do { \ 332 (inode)->xtime.tv_sec = (signed)le32_to_cpu((raw_inode)->xtime); \ 333 if (EXT4_FITS_IN_INODE(raw_inode, EXT4_I(inode), xtime##_extra)) \ 334 ext4_decode_extra_time(&(inode)->xtime, (raw_inode)->xtime##_extra); \ 335 } while (0) 336 337 #define EXT4_EINODE_GET_XTIME(xtime, einode, raw_inode) \ 338 do { \ 339 if (EXT4_FITS_IN_INODE(raw_inode, einode, xtime)) \ 340 (einode)->xtime.tv_sec = (signed)le32_to_cpu((raw_inode)->xtime); \ 341 if (EXT4_FITS_IN_INODE(raw_inode, einode, xtime##_extra)) \ 342 ext4_decode_extra_time(&(einode)->xtime, (raw_inode)->xtime##_extra); \ 343 } while (0) 344 #define i_disk_version osd1.linux1.l_i_version 345 346 #define i_reserved1 osd1.linux1.l_i_reserved1 347 #define i_file_acl_high osd2.linux2.l_i_file_acl_high 348 #define i_blocks_high osd2.linux2.l_i_blocks_high 349 #define i_uid_low i_uid 350 #define i_gid_low i_gid 351 #define i_uid_high osd2.linux2.l_i_uid_high 352 #define i_gid_high osd2.linux2.l_i_gid_high 353 #define i_reserved2 osd2.linux2.l_i_reserved2 354 355 #define EXT4_VALID_FS 0x0001 356 #define EXT4_ERROR_FS 0x0002 357 #define EXT4_ORPHAN_FS 0x0004 358 359 #define EXT2_FLAGS_SIGNED_HASH 0x0001 360 #define EXT2_FLAGS_UNSIGNED_HASH 0x0002 361 #define EXT2_FLAGS_TEST_FILESYS 0x0004 362 363 #define EXT4_MOUNT_OLDALLOC 0x00002 364 #define EXT4_MOUNT_GRPID 0x00004 365 #define EXT4_MOUNT_DEBUG 0x00008 366 #define EXT4_MOUNT_ERRORS_CONT 0x00010 367 #define EXT4_MOUNT_ERRORS_RO 0x00020 368 #define EXT4_MOUNT_ERRORS_PANIC 0x00040 369 #define EXT4_MOUNT_MINIX_DF 0x00080 370 #define EXT4_MOUNT_NOLOAD 0x00100 371 #define EXT4_MOUNT_DATA_FLAGS 0x00C00 372 #define EXT4_MOUNT_JOURNAL_DATA 0x00400 373 #define EXT4_MOUNT_ORDERED_DATA 0x00800 374 #define EXT4_MOUNT_WRITEBACK_DATA 0x00C00 375 #define EXT4_MOUNT_UPDATE_JOURNAL 0x01000 376 #define EXT4_MOUNT_NO_UID32 0x02000 377 #define EXT4_MOUNT_XATTR_USER 0x04000 378 #define EXT4_MOUNT_POSIX_ACL 0x08000 379 #define EXT4_MOUNT_NO_AUTO_DA_ALLOC 0x10000 380 #define EXT4_MOUNT_BARRIER 0x20000 381 #define EXT4_MOUNT_NOBH 0x40000 382 #define EXT4_MOUNT_QUOTA 0x80000 383 #define EXT4_MOUNT_USRQUOTA 0x100000 384 #define EXT4_MOUNT_GRPQUOTA 0x200000 385 #define EXT4_MOUNT_DIOREAD_NOLOCK 0x400000 386 #define EXT4_MOUNT_JOURNAL_CHECKSUM 0x800000 387 #define EXT4_MOUNT_JOURNAL_ASYNC_COMMIT 0x1000000 388 #define EXT4_MOUNT_I_VERSION 0x2000000 389 #define EXT4_MOUNT_DELALLOC 0x8000000 390 #define EXT4_MOUNT_DATA_ERR_ABORT 0x10000000 391 #define EXT4_MOUNT_BLOCK_VALIDITY 0x20000000 392 #define EXT4_MOUNT_DISCARD 0x40000000 393 394 #define clear_opt(o, opt) o &= ~EXT4_MOUNT_##opt 395 #define set_opt(o, opt) o |= EXT4_MOUNT_##opt 396 #define test_opt(sb, opt) (EXT4_SB(sb)->s_mount_opt & EXT4_MOUNT_##opt) 397 398 #define ext4_set_bit ext2_set_bit 399 #define ext4_set_bit_atomic ext2_set_bit_atomic 400 #define ext4_clear_bit ext2_clear_bit 401 #define ext4_clear_bit_atomic ext2_clear_bit_atomic 402 #define ext4_test_bit ext2_test_bit 403 #define ext4_find_first_zero_bit ext2_find_first_zero_bit 404 #define ext4_find_next_zero_bit ext2_find_next_zero_bit 405 #define ext4_find_next_bit ext2_find_next_bit 406 407 #define EXT4_DFL_MAX_MNT_COUNT 20 408 #define EXT4_DFL_CHECKINTERVAL 0 409 410 #define EXT4_ERRORS_CONTINUE 1 411 #define EXT4_ERRORS_RO 2 412 #define EXT4_ERRORS_PANIC 3 413 #define EXT4_ERRORS_DEFAULT EXT4_ERRORS_CONTINUE 414 415 struct ext4_super_block { 416 __le32 s_inodes_count; 417 __le32 s_blocks_count_lo; 418 __le32 s_r_blocks_count_lo; 419 __le32 s_free_blocks_count_lo; 420 __le32 s_free_inodes_count; 421 __le32 s_first_data_block; 422 __le32 s_log_block_size; 423 __le32 s_obso_log_frag_size; 424 __le32 s_blocks_per_group; 425 __le32 s_obso_frags_per_group; 426 __le32 s_inodes_per_group; 427 __le32 s_mtime; 428 __le32 s_wtime; 429 __le16 s_mnt_count; 430 __le16 s_max_mnt_count; 431 __le16 s_magic; 432 __le16 s_state; 433 __le16 s_errors; 434 __le16 s_minor_rev_level; 435 __le32 s_lastcheck; 436 __le32 s_checkinterval; 437 __le32 s_creator_os; 438 __le32 s_rev_level; 439 __le16 s_def_resuid; 440 __le16 s_def_resgid; 441 442 __le32 s_first_ino; 443 __le16 s_inode_size; 444 __le16 s_block_group_nr; 445 __le32 s_feature_compat; 446 __le32 s_feature_incompat; 447 __le32 s_feature_ro_compat; 448 __u8 s_uuid[16]; 449 char s_volume_name[16]; 450 char s_last_mounted[64]; 451 __le32 s_algorithm_usage_bitmap; 452 453 __u8 s_prealloc_blocks; 454 __u8 s_prealloc_dir_blocks; 455 __le16 s_reserved_gdt_blocks; 456 457 __u8 s_journal_uuid[16]; 458 __le32 s_journal_inum; 459 __le32 s_journal_dev; 460 __le32 s_last_orphan; 461 __le32 s_hash_seed[4]; 462 __u8 s_def_hash_version; 463 __u8 s_reserved_char_pad; 464 __le16 s_desc_size; 465 __le32 s_default_mount_opts; 466 __le32 s_first_meta_bg; 467 __le32 s_mkfs_time; 468 __le32 s_jnl_blocks[17]; 469 470 __le32 s_blocks_count_hi; 471 __le32 s_r_blocks_count_hi; 472 __le32 s_free_blocks_count_hi; 473 __le16 s_min_extra_isize; 474 __le16 s_want_extra_isize; 475 __le32 s_flags; 476 __le16 s_raid_stride; 477 __le16 s_mmp_interval; 478 __le64 s_mmp_block; 479 __le32 s_raid_stripe_width; 480 __u8 s_log_groups_per_flex; 481 __u8 s_reserved_char_pad2; 482 __le16 s_reserved_pad; 483 __le64 s_kbytes_written; 484 __u32 s_reserved[160]; 485 }; 486 487 #define EXT4_SB(sb) (sb) 488 489 #define NEXT_ORPHAN(inode) EXT4_I(inode)->i_dtime 490 491 #define EXT4_OS_LINUX 0 492 #define EXT4_OS_HURD 1 493 #define EXT4_OS_MASIX 2 494 #define EXT4_OS_FREEBSD 3 495 #define EXT4_OS_LITES 4 496 497 #define EXT4_GOOD_OLD_REV 0 498 #define EXT4_DYNAMIC_REV 1 499 500 #define EXT4_CURRENT_REV EXT4_GOOD_OLD_REV 501 #define EXT4_MAX_SUPP_REV EXT4_DYNAMIC_REV 502 503 #define EXT4_GOOD_OLD_INODE_SIZE 128 504 505 #define EXT4_HAS_COMPAT_FEATURE(sb, mask) \ 506 ((EXT4_SB(sb)->s_es->s_feature_compat & cpu_to_le32(mask)) != 0) 507 #define EXT4_HAS_RO_COMPAT_FEATURE(sb, mask) \ 508 ((EXT4_SB(sb)->s_es->s_feature_ro_compat & cpu_to_le32(mask)) != 0) 509 #define EXT4_HAS_INCOMPAT_FEATURE(sb, mask) \ 510 ((EXT4_SB(sb)->s_es->s_feature_incompat & cpu_to_le32(mask)) != 0) 511 #define EXT4_SET_COMPAT_FEATURE(sb, mask) EXT4_SB(sb)->s_es->s_feature_compat |= cpu_to_le32(mask) 512 #define EXT4_SET_RO_COMPAT_FEATURE(sb, mask) \ 513 EXT4_SB(sb)->s_es->s_feature_ro_compat |= cpu_to_le32(mask) 514 #define EXT4_SET_INCOMPAT_FEATURE(sb, mask) \ 515 EXT4_SB(sb)->s_es->s_feature_incompat |= cpu_to_le32(mask) 516 #define EXT4_CLEAR_COMPAT_FEATURE(sb, mask) \ 517 EXT4_SB(sb)->s_es->s_feature_compat &= ~cpu_to_le32(mask) 518 #define EXT4_CLEAR_RO_COMPAT_FEATURE(sb, mask) \ 519 EXT4_SB(sb)->s_es->s_feature_ro_compat &= ~cpu_to_le32(mask) 520 #define EXT4_CLEAR_INCOMPAT_FEATURE(sb, mask) \ 521 EXT4_SB(sb)->s_es->s_feature_incompat &= ~cpu_to_le32(mask) 522 523 #define EXT4_FEATURE_COMPAT_DIR_PREALLOC 0x0001 524 #define EXT4_FEATURE_COMPAT_IMAGIC_INODES 0x0002 525 #define EXT4_FEATURE_COMPAT_HAS_JOURNAL 0x0004 526 #define EXT4_FEATURE_COMPAT_EXT_ATTR 0x0008 527 #define EXT4_FEATURE_COMPAT_RESIZE_INODE 0x0010 528 #define EXT4_FEATURE_COMPAT_DIR_INDEX 0x0020 529 530 #define EXT4_FEATURE_RO_COMPAT_SPARSE_SUPER 0x0001 531 #define EXT4_FEATURE_RO_COMPAT_LARGE_FILE 0x0002 532 #define EXT4_FEATURE_RO_COMPAT_BTREE_DIR 0x0004 533 #define EXT4_FEATURE_RO_COMPAT_HUGE_FILE 0x0008 534 #define EXT4_FEATURE_RO_COMPAT_GDT_CSUM 0x0010 535 #define EXT4_FEATURE_RO_COMPAT_DIR_NLINK 0x0020 536 #define EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE 0x0040 537 #define EXT4_FEATURE_RO_COMPAT_HAS_SNAPSHOT 0x0080 538 #define EXT4_FEATURE_RO_COMPAT_QUOTA 0x0100 539 #define EXT4_FEATURE_RO_COMPAT_BIGALLOC 0x0200 540 #define EXT4_FEATURE_RO_COMPAT_METADATA_CSUM 0x0400 541 #define EXT4_FEATURE_RO_COMPAT_SHARED_BLOCKS 0x4000 542 #define EXT4_FEATURE_RO_COMPAT_VERITY 0x8000 543 544 #define EXT4_FEATURE_INCOMPAT_COMPRESSION 0x0001 545 #define EXT4_FEATURE_INCOMPAT_FILETYPE 0x0002 546 #define EXT4_FEATURE_INCOMPAT_RECOVER 0x0004 547 #define EXT4_FEATURE_INCOMPAT_JOURNAL_DEV 0x0008 548 #define EXT4_FEATURE_INCOMPAT_META_BG 0x0010 549 #define EXT4_FEATURE_INCOMPAT_EXTENTS 0x0040 550 #define EXT4_FEATURE_INCOMPAT_64BIT 0x0080 551 #define EXT4_FEATURE_INCOMPAT_MMP 0x0100 552 #define EXT4_FEATURE_INCOMPAT_FLEX_BG 0x0200 553 #define EXT4_FEATURE_INCOMPAT_EA_INODE 0x0400 554 #define EXT4_FEATURE_INCOMPAT_DIRDATA 0x1000 555 #define EXT4_FEATURE_INCOMPAT_ENCRYPT 0x10000 556 #define EXT4_FEATURE_INCOMPAT_CASEFOLD 0x20000 557 558 #define EXT4_FEATURE_COMPAT_SUPP EXT2_FEATURE_COMPAT_EXT_ATTR 559 #define EXT4_FEATURE_INCOMPAT_SUPP \ 560 (EXT4_FEATURE_INCOMPAT_FILETYPE | EXT4_FEATURE_INCOMPAT_RECOVER | \ 561 EXT4_FEATURE_INCOMPAT_META_BG | EXT4_FEATURE_INCOMPAT_EXTENTS | EXT4_FEATURE_INCOMPAT_64BIT | \ 562 EXT4_FEATURE_INCOMPAT_FLEX_BG) 563 #define EXT4_FEATURE_RO_COMPAT_SUPP \ 564 (EXT4_FEATURE_RO_COMPAT_SPARSE_SUPER | EXT4_FEATURE_RO_COMPAT_LARGE_FILE | \ 565 EXT4_FEATURE_RO_COMPAT_GDT_CSUM | EXT4_FEATURE_RO_COMPAT_DIR_NLINK | \ 566 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE | EXT4_FEATURE_RO_COMPAT_BTREE_DIR | \ 567 EXT4_FEATURE_RO_COMPAT_HUGE_FILE) 568 569 #define EXT4_DEF_RESUID 0 570 #define EXT4_DEF_RESGID 0 571 572 #define EXT4_DEF_INODE_READAHEAD_BLKS 32 573 574 #define EXT4_DEFM_DEBUG 0x0001 575 #define EXT4_DEFM_BSDGROUPS 0x0002 576 #define EXT4_DEFM_XATTR_USER 0x0004 577 #define EXT4_DEFM_ACL 0x0008 578 #define EXT4_DEFM_UID16 0x0010 579 #define EXT4_DEFM_JMODE 0x0060 580 #define EXT4_DEFM_JMODE_DATA 0x0020 581 #define EXT4_DEFM_JMODE_ORDERED 0x0040 582 #define EXT4_DEFM_JMODE_WBACK 0x0060 583 584 #define EXT4_DEF_MIN_BATCH_TIME 0 585 #define EXT4_DEF_MAX_BATCH_TIME 15000 586 587 #define EXT4_FLEX_SIZE_DIR_ALLOC_SCHEME 4 588 589 #define EXT4_NAME_LEN 255 590 591 struct ext4_dir_entry { 592 __le32 inode; 593 __le16 rec_len; 594 __le16 name_len; 595 char name[EXT4_NAME_LEN]; 596 }; 597 598 struct ext4_dir_entry_2 { 599 __le32 inode; 600 __le16 rec_len; 601 __u8 name_len; 602 __u8 file_type; 603 char name[EXT4_NAME_LEN]; 604 }; 605 606 #define EXT4_FT_UNKNOWN 0 607 #define EXT4_FT_REG_FILE 1 608 #define EXT4_FT_DIR 2 609 #define EXT4_FT_CHRDEV 3 610 #define EXT4_FT_BLKDEV 4 611 #define EXT4_FT_FIFO 5 612 #define EXT4_FT_SOCK 6 613 #define EXT4_FT_SYMLINK 7 614 615 #define EXT4_FT_MAX 8 616 617 #define EXT4_DIR_PAD 4 618 #define EXT4_DIR_ROUND (EXT4_DIR_PAD - 1) 619 #define EXT4_DIR_REC_LEN(name_len) (((name_len) + 8 + EXT4_DIR_ROUND) & ~EXT4_DIR_ROUND) 620 #define EXT4_MAX_REC_LEN ((1 << 16) - 1) 621 622 #define is_dx(dir) \ 623 (EXT4_HAS_COMPAT_FEATURE((dir)->i_sb, EXT4_FEATURE_COMPAT_DIR_INDEX) && \ 624 (EXT4_I(dir)->i_flags & EXT4_INDEX_FL)) 625 #define EXT4_DIR_LINK_MAX(dir) (!is_dx(dir) && (dir)->i_nlink >= EXT4_LINK_MAX) 626 #define EXT4_DIR_LINK_EMPTY(dir) ((dir)->i_nlink == 2 || (dir)->i_nlink == 1) 627 628 #define DX_HASH_LEGACY 0 629 #define DX_HASH_HALF_MD4 1 630 #define DX_HASH_TEA 2 631 #define DX_HASH_LEGACY_UNSIGNED 3 632 #define DX_HASH_HALF_MD4_UNSIGNED 4 633 #define DX_HASH_TEA_UNSIGNED 5 634 635 #endif 636