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) 101 #define EXT4_BLOCK_ALIGN(size, blkbits) EXT4_ALIGN((size), (1 << (blkbits))) 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 577 578
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