/**************************************************************************** **************************************************************************** *** *** This header was automatically generated from a Linux kernel header *** of the same name, to make information necessary for userspace to *** call into the kernel available to libc. It contains only constants, *** structures, and macros generated from the original header, and thus, *** contains no copyrightable information. *** **************************************************************************** ****************************************************************************/ #ifndef _EXT4_H #define _EXT4_H #include #undef EXT4FS_DEBUG #ifdef EXT4FS_DEBUG #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) #else #define ext4_debug(f, a...) \ do { \ } while (0) #endif #define EXT4_ERROR_INODE(inode, fmt, a...) ext4_error_inode(__func__, (inode), (fmt), ##a); #define EXT4_ERROR_FILE(file, fmt, a...) ext4_error_file(__func__, (file), (fmt), ##a); typedef int ext4_grpblk_t; typedef unsigned long long ext4_fsblk_t; typedef __u32 ext4_lblk_t; typedef unsigned int ext4_group_t; #define EXT4_MB_HINT_MERGE 0x0001 #define EXT4_MB_HINT_RESERVED 0x0002 #define EXT4_MB_HINT_METADATA 0x0004 #define EXT4_MB_HINT_FIRST 0x0008 #define EXT4_MB_HINT_BEST 0x0010 #define EXT4_MB_HINT_DATA 0x0020 #define EXT4_MB_HINT_NOPREALLOC 0x0040 #define EXT4_MB_HINT_GROUP_ALLOC 0x0080 #define EXT4_MB_HINT_GOAL_ONLY 0x0100 #define EXT4_MB_HINT_TRY_GOAL 0x0200 #define EXT4_MB_DELALLOC_RESERVED 0x0400 #define EXT4_MB_STREAM_ALLOC 0x0800 struct ext4_allocation_request { struct inode* inode; unsigned int len; ext4_lblk_t logical; ext4_lblk_t lleft; ext4_lblk_t lright; ext4_fsblk_t goal; ext4_fsblk_t pleft; ext4_fsblk_t pright; unsigned int flags; }; #define EXT4_BAD_INO 1 #define EXT4_ROOT_INO 2 #define EXT4_BOOT_LOADER_INO 5 #define EXT4_UNDEL_DIR_INO 6 #define EXT4_RESIZE_INO 7 #define EXT4_JOURNAL_INO 8 #define EXT4_GOOD_OLD_FIRST_INO 11 #define EXT4_LINK_MAX 65000 #define EXT4_MIN_BLOCK_SIZE 1024 #define EXT4_MAX_BLOCK_SIZE 65536 #define EXT4_MIN_BLOCK_LOG_SIZE 10 #define EXT4_BLOCK_SIZE(s) (EXT4_MIN_BLOCK_SIZE << (s)->s_log_block_size) #define EXT4_ADDR_PER_BLOCK(s) (EXT4_BLOCK_SIZE(s) / sizeof(__u32)) #define EXT4_BLOCK_SIZE_BITS(s) ((s)->s_log_block_size + 10) #define EXT4_INODE_SIZE(s) \ (((s)->s_rev_level == EXT4_GOOD_OLD_REV) ? EXT4_GOOD_OLD_INODE_SIZE : (s)->s_inode_size) #define EXT4_FIRST_INO(s) \ (((s)->s_rev_level == EXT4_GOOD_OLD_REV) ? EXT4_GOOD_OLD_FIRST_INO : (s)->s_first_ino) #define EXT4_BLOCK_ALIGN(size, blkbits) EXT4_ALIGN((size), (1 << (blkbits))) struct ext4_group_desc { __le32 bg_block_bitmap_lo; __le32 bg_inode_bitmap_lo; __le32 bg_inode_table_lo; __le16 bg_free_blocks_count_lo; __le16 bg_free_inodes_count_lo; __le16 bg_used_dirs_count_lo; __le16 bg_flags; __u32 bg_reserved[2]; __le16 bg_itable_unused_lo; __le16 bg_checksum; __le32 bg_block_bitmap_hi; __le32 bg_inode_bitmap_hi; __le32 bg_inode_table_hi; __le16 bg_free_blocks_count_hi; __le16 bg_free_inodes_count_hi; __le16 bg_used_dirs_count_hi; __le16 bg_itable_unused_hi; __u32 bg_reserved2[3]; }; #define EXT4_BG_INODE_UNINIT 0x0001 #define EXT4_BG_BLOCK_UNINIT 0x0002 #define EXT4_BG_INODE_ZEROED 0x0004 #define EXT4_MIN_DESC_SIZE 32 #define EXT4_MIN_DESC_SIZE_64BIT 64 #define EXT4_MAX_DESC_SIZE EXT4_MIN_BLOCK_SIZE #define EXT4_DESC_SIZE(s) (EXT4_SB(s)->s_desc_size) #define EXT4_BLOCKS_PER_GROUP(s) ((s)->s_blocks_per_group) #define EXT4_DESC_PER_BLOCK(s) (EXT4_BLOCK_SIZE(s) / EXT4_DESC_SIZE(s)) #define EXT4_INODES_PER_GROUP(s) ((s)->s_inodes_per_group) #define EXT4_NDIR_BLOCKS 12 #define EXT4_IND_BLOCK EXT4_NDIR_BLOCKS #define EXT4_DIND_BLOCK (EXT4_IND_BLOCK + 1) #define EXT4_TIND_BLOCK (EXT4_DIND_BLOCK + 1) #define EXT4_N_BLOCKS (EXT4_TIND_BLOCK + 1) #define EXT4_SECRM_FL 0x00000001 #define EXT4_UNRM_FL 0x00000002 #define EXT4_COMPR_FL 0x00000004 #define EXT4_SYNC_FL 0x00000008 #define EXT4_IMMUTABLE_FL 0x00000010 #define EXT4_APPEND_FL 0x00000020 #define EXT4_NODUMP_FL 0x00000040 #define EXT4_NOATIME_FL 0x00000080 #define EXT4_DIRTY_FL 0x00000100 #define EXT4_COMPRBLK_FL 0x00000200 #define EXT4_NOCOMPR_FL 0x00000400 #define EXT4_ECOMPR_FL 0x00000800 #define EXT4_INDEX_FL 0x00001000 #define EXT4_IMAGIC_FL 0x00002000 #define EXT4_JOURNAL_DATA_FL 0x00004000 #define EXT4_NOTAIL_FL 0x00008000 #define EXT4_DIRSYNC_FL 0x00010000 #define EXT4_TOPDIR_FL 0x00020000 #define EXT4_HUGE_FILE_FL 0x00040000 #define EXT4_EXTENTS_FL 0x00080000 #define EXT4_EA_INODE_FL 0x00200000 #define EXT4_EOFBLOCKS_FL 0x00400000 #define EXT4_RESERVED_FL 0x80000000 #define EXT4_FL_USER_VISIBLE 0x004BDFFF #define EXT4_FL_USER_MODIFIABLE 0x004B80FF #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) #define EXT4_REG_FLMASK (~(EXT4_DIRSYNC_FL | EXT4_TOPDIR_FL)) #define EXT4_OTHER_FLMASK (EXT4_NODUMP_FL | EXT4_NOATIME_FL) struct ext4_new_group_data { __u32 group; __u64 block_bitmap; __u64 inode_bitmap; __u64 inode_table; __u32 blocks_count; __u16 reserved_blocks; __u16 unused; __u32 free_blocks_count; }; #define EXT4_GET_BLOCKS_CREATE 0x0001 #define EXT4_GET_BLOCKS_UNINIT_EXT 0x0002 #define EXT4_GET_BLOCKS_CREATE_UNINIT_EXT (EXT4_GET_BLOCKS_UNINIT_EXT | EXT4_GET_BLOCKS_CREATE) #define EXT4_GET_BLOCKS_DELALLOC_RESERVE 0x0004 #define EXT4_GET_BLOCKS_PRE_IO 0x0008 #define EXT4_GET_BLOCKS_CONVERT 0x0010 #define EXT4_GET_BLOCKS_IO_CREATE_EXT (EXT4_GET_BLOCKS_PRE_IO | EXT4_GET_BLOCKS_CREATE_UNINIT_EXT) #define EXT4_GET_BLOCKS_IO_CONVERT_EXT (EXT4_GET_BLOCKS_CONVERT | EXT4_GET_BLOCKS_CREATE_UNINIT_EXT) #define EXT4_FREE_BLOCKS_METADATA 0x0001 #define EXT4_FREE_BLOCKS_FORGET 0x0002 #define EXT4_FREE_BLOCKS_VALIDATED 0x0004 #define EXT4_IOC_GETFLAGS FS_IOC_GETFLAGS #define EXT4_IOC_SETFLAGS FS_IOC_SETFLAGS #define EXT4_IOC_GETVERSION _IOR('f', 3, long) #define EXT4_IOC_SETVERSION _IOW('f', 4, long) #define EXT4_IOC_GETVERSION_OLD FS_IOC_GETVERSION #define EXT4_IOC_SETVERSION_OLD FS_IOC_SETVERSION #define EXT4_IOC_GETRSVSZ _IOR('f', 5, long) #define EXT4_IOC_SETRSVSZ _IOW('f', 6, long) #define EXT4_IOC_GROUP_EXTEND _IOW('f', 7, unsigned long) #define EXT4_IOC_GROUP_ADD _IOW('f', 8, struct ext4_new_group_input) #define EXT4_IOC_MIGRATE _IO('f', 9) #define EXT4_IOC_ALLOC_DA_BLKS _IO('f', 12) #define EXT4_IOC_MOVE_EXT _IOWR('f', 15, struct move_extent) #define EXT4_IOC32_GETFLAGS FS_IOC32_GETFLAGS #define EXT4_IOC32_SETFLAGS FS_IOC32_SETFLAGS #define EXT4_IOC32_GETVERSION _IOR('f', 3, int) #define EXT4_IOC32_SETVERSION _IOW('f', 4, int) #define EXT4_IOC32_GETRSVSZ _IOR('f', 5, int) #define EXT4_IOC32_SETRSVSZ _IOW('f', 6, int) #define EXT4_IOC32_GROUP_EXTEND _IOW('f', 7, unsigned int) #define EXT4_IOC32_GETVERSION_OLD FS_IOC32_GETVERSION #define EXT4_IOC32_SETVERSION_OLD FS_IOC32_SETVERSION #define EXT4_MAX_BLOCK_FILE_PHYS 0xFFFFFFFF struct ext4_inode { __le16 i_mode; __le16 i_uid; __le32 i_size_lo; __le32 i_atime; __le32 i_ctime; __le32 i_mtime; __le32 i_dtime; __le16 i_gid; __le16 i_links_count; __le32 i_blocks_lo; __le32 i_flags; union { struct { __le32 l_i_version; } linux1; struct { __u32 h_i_translator; } hurd1; struct { __u32 m_i_reserved1; } masix1; } osd1; __le32 i_block[EXT4_N_BLOCKS]; __le32 i_generation; __le32 i_file_acl_lo; __le32 i_size_high; __le32 i_obso_faddr; union { struct { __le16 l_i_blocks_high; __le16 l_i_file_acl_high; __le16 l_i_uid_high; __le16 l_i_gid_high; __u32 l_i_reserved2; } linux2; struct { __le16 h_i_reserved1; __u16 h_i_mode_high; __u16 h_i_uid_high; __u16 h_i_gid_high; __u32 h_i_author; } hurd2; struct { __le16 h_i_reserved1; __le16 m_i_file_acl_high; __u32 m_i_reserved2[2]; } masix2; } osd2; __le16 i_extra_isize; __le16 i_pad1; __le32 i_ctime_extra; __le32 i_mtime_extra; __le32 i_atime_extra; __le32 i_crtime; __le32 i_crtime_extra; __le32 i_version_hi; }; struct move_extent { __u32 reserved; __u32 donor_fd; __u64 orig_start; __u64 donor_start; __u64 len; __u64 moved_len; }; #define EXT4_EPOCH_BITS 2 #define EXT4_EPOCH_MASK ((1 << EXT4_EPOCH_BITS) - 1) #define EXT4_NSEC_MASK (~0UL << EXT4_EPOCH_BITS) #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)) #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) #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) #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) #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) #define i_disk_version osd1.linux1.l_i_version #define i_reserved1 osd1.linux1.l_i_reserved1 #define i_file_acl_high osd2.linux2.l_i_file_acl_high #define i_blocks_high osd2.linux2.l_i_blocks_high #define i_uid_low i_uid #define i_gid_low i_gid #define i_uid_high osd2.linux2.l_i_uid_high #define i_gid_high osd2.linux2.l_i_gid_high #define i_reserved2 osd2.linux2.l_i_reserved2 #define EXT4_VALID_FS 0x0001 #define EXT4_ERROR_FS 0x0002 #define EXT4_ORPHAN_FS 0x0004 #define EXT2_FLAGS_SIGNED_HASH 0x0001 #define EXT2_FLAGS_UNSIGNED_HASH 0x0002 #define EXT2_FLAGS_TEST_FILESYS 0x0004 #define EXT4_MOUNT_OLDALLOC 0x00002 #define EXT4_MOUNT_GRPID 0x00004 #define EXT4_MOUNT_DEBUG 0x00008 #define EXT4_MOUNT_ERRORS_CONT 0x00010 #define EXT4_MOUNT_ERRORS_RO 0x00020 #define EXT4_MOUNT_ERRORS_PANIC 0x00040 #define EXT4_MOUNT_MINIX_DF 0x00080 #define EXT4_MOUNT_NOLOAD 0x00100 #define EXT4_MOUNT_DATA_FLAGS 0x00C00 #define EXT4_MOUNT_JOURNAL_DATA 0x00400 #define EXT4_MOUNT_ORDERED_DATA 0x00800 #define EXT4_MOUNT_WRITEBACK_DATA 0x00C00 #define EXT4_MOUNT_UPDATE_JOURNAL 0x01000 #define EXT4_MOUNT_NO_UID32 0x02000 #define EXT4_MOUNT_XATTR_USER 0x04000 #define EXT4_MOUNT_POSIX_ACL 0x08000 #define EXT4_MOUNT_NO_AUTO_DA_ALLOC 0x10000 #define EXT4_MOUNT_BARRIER 0x20000 #define EXT4_MOUNT_NOBH 0x40000 #define EXT4_MOUNT_QUOTA 0x80000 #define EXT4_MOUNT_USRQUOTA 0x100000 #define EXT4_MOUNT_GRPQUOTA 0x200000 #define EXT4_MOUNT_DIOREAD_NOLOCK 0x400000 #define EXT4_MOUNT_JOURNAL_CHECKSUM 0x800000 #define EXT4_MOUNT_JOURNAL_ASYNC_COMMIT 0x1000000 #define EXT4_MOUNT_I_VERSION 0x2000000 #define EXT4_MOUNT_DELALLOC 0x8000000 #define EXT4_MOUNT_DATA_ERR_ABORT 0x10000000 #define EXT4_MOUNT_BLOCK_VALIDITY 0x20000000 #define EXT4_MOUNT_DISCARD 0x40000000 #define clear_opt(o, opt) o &= ~EXT4_MOUNT_##opt #define set_opt(o, opt) o |= EXT4_MOUNT_##opt #define test_opt(sb, opt) (EXT4_SB(sb)->s_mount_opt & EXT4_MOUNT_##opt) #define ext4_set_bit ext2_set_bit #define ext4_set_bit_atomic ext2_set_bit_atomic #define ext4_clear_bit ext2_clear_bit #define ext4_clear_bit_atomic ext2_clear_bit_atomic #define ext4_test_bit ext2_test_bit #define ext4_find_first_zero_bit ext2_find_first_zero_bit #define ext4_find_next_zero_bit ext2_find_next_zero_bit #define ext4_find_next_bit ext2_find_next_bit #define EXT4_DFL_MAX_MNT_COUNT 20 #define EXT4_DFL_CHECKINTERVAL 0 #define EXT4_ERRORS_CONTINUE 1 #define EXT4_ERRORS_RO 2 #define EXT4_ERRORS_PANIC 3 #define EXT4_ERRORS_DEFAULT EXT4_ERRORS_CONTINUE struct ext4_super_block { __le32 s_inodes_count; __le32 s_blocks_count_lo; __le32 s_r_blocks_count_lo; __le32 s_free_blocks_count_lo; __le32 s_free_inodes_count; __le32 s_first_data_block; __le32 s_log_block_size; __le32 s_obso_log_frag_size; __le32 s_blocks_per_group; __le32 s_obso_frags_per_group; __le32 s_inodes_per_group; __le32 s_mtime; __le32 s_wtime; __le16 s_mnt_count; __le16 s_max_mnt_count; __le16 s_magic; __le16 s_state; __le16 s_errors; __le16 s_minor_rev_level; __le32 s_lastcheck; __le32 s_checkinterval; __le32 s_creator_os; __le32 s_rev_level; __le16 s_def_resuid; __le16 s_def_resgid; __le32 s_first_ino; __le16 s_inode_size; __le16 s_block_group_nr; __le32 s_feature_compat; __le32 s_feature_incompat; __le32 s_feature_ro_compat; __u8 s_uuid[16]; char s_volume_name[16]; char s_last_mounted[64]; __le32 s_algorithm_usage_bitmap; __u8 s_prealloc_blocks; __u8 s_prealloc_dir_blocks; __le16 s_reserved_gdt_blocks; __u8 s_journal_uuid[16]; __le32 s_journal_inum; __le32 s_journal_dev; __le32 s_last_orphan; __le32 s_hash_seed[4]; __u8 s_def_hash_version; __u8 s_reserved_char_pad; __le16 s_desc_size; __le32 s_default_mount_opts; __le32 s_first_meta_bg; __le32 s_mkfs_time; __le32 s_jnl_blocks[17]; __le32 s_blocks_count_hi; __le32 s_r_blocks_count_hi; __le32 s_free_blocks_count_hi; __le16 s_min_extra_isize; __le16 s_want_extra_isize; __le32 s_flags; __le16 s_raid_stride; __le16 s_mmp_interval; __le64 s_mmp_block; __le32 s_raid_stripe_width; __u8 s_log_groups_per_flex; __u8 s_reserved_char_pad2; __le16 s_reserved_pad; __le64 s_kbytes_written; __u32 s_reserved[160]; }; #define EXT4_SB(sb) (sb) #define NEXT_ORPHAN(inode) EXT4_I(inode)->i_dtime #define EXT4_OS_LINUX 0 #define EXT4_OS_HURD 1 #define EXT4_OS_MASIX 2 #define EXT4_OS_FREEBSD 3 #define EXT4_OS_LITES 4 #define EXT4_GOOD_OLD_REV 0 #define EXT4_DYNAMIC_REV 1 #define EXT4_CURRENT_REV EXT4_GOOD_OLD_REV #define EXT4_MAX_SUPP_REV EXT4_DYNAMIC_REV #define EXT4_GOOD_OLD_INODE_SIZE 128 #define EXT4_HAS_COMPAT_FEATURE(sb, mask) \ ((EXT4_SB(sb)->s_es->s_feature_compat & cpu_to_le32(mask)) != 0) #define EXT4_HAS_RO_COMPAT_FEATURE(sb, mask) \ ((EXT4_SB(sb)->s_es->s_feature_ro_compat & cpu_to_le32(mask)) != 0) #define EXT4_HAS_INCOMPAT_FEATURE(sb, mask) \ ((EXT4_SB(sb)->s_es->s_feature_incompat & cpu_to_le32(mask)) != 0) #define EXT4_SET_COMPAT_FEATURE(sb, mask) EXT4_SB(sb)->s_es->s_feature_compat |= cpu_to_le32(mask) #define EXT4_SET_RO_COMPAT_FEATURE(sb, mask) \ EXT4_SB(sb)->s_es->s_feature_ro_compat |= cpu_to_le32(mask) #define EXT4_SET_INCOMPAT_FEATURE(sb, mask) \ EXT4_SB(sb)->s_es->s_feature_incompat |= cpu_to_le32(mask) #define EXT4_CLEAR_COMPAT_FEATURE(sb, mask) \ EXT4_SB(sb)->s_es->s_feature_compat &= ~cpu_to_le32(mask) #define EXT4_CLEAR_RO_COMPAT_FEATURE(sb, mask) \ EXT4_SB(sb)->s_es->s_feature_ro_compat &= ~cpu_to_le32(mask) #define EXT4_CLEAR_INCOMPAT_FEATURE(sb, mask) \ EXT4_SB(sb)->s_es->s_feature_incompat &= ~cpu_to_le32(mask) #define EXT4_FEATURE_COMPAT_DIR_PREALLOC 0x0001 #define EXT4_FEATURE_COMPAT_IMAGIC_INODES 0x0002 #define EXT4_FEATURE_COMPAT_HAS_JOURNAL 0x0004 #define EXT4_FEATURE_COMPAT_EXT_ATTR 0x0008 #define EXT4_FEATURE_COMPAT_RESIZE_INODE 0x0010 #define EXT4_FEATURE_COMPAT_DIR_INDEX 0x0020 #define EXT4_FEATURE_COMPAT_STABLE_INODES 0x0800 #define EXT4_FEATURE_RO_COMPAT_SPARSE_SUPER 0x0001 #define EXT4_FEATURE_RO_COMPAT_LARGE_FILE 0x0002 #define EXT4_FEATURE_RO_COMPAT_BTREE_DIR 0x0004 #define EXT4_FEATURE_RO_COMPAT_HUGE_FILE 0x0008 #define EXT4_FEATURE_RO_COMPAT_GDT_CSUM 0x0010 #define EXT4_FEATURE_RO_COMPAT_DIR_NLINK 0x0020 #define EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE 0x0040 #define EXT4_FEATURE_RO_COMPAT_HAS_SNAPSHOT 0x0080 #define EXT4_FEATURE_RO_COMPAT_QUOTA 0x0100 #define EXT4_FEATURE_RO_COMPAT_BIGALLOC 0x0200 #define EXT4_FEATURE_RO_COMPAT_METADATA_CSUM 0x0400 #define EXT4_FEATURE_RO_COMPAT_SHARED_BLOCKS 0x4000 #define EXT4_FEATURE_RO_COMPAT_VERITY 0x8000 #define EXT4_FEATURE_INCOMPAT_COMPRESSION 0x0001 #define EXT4_FEATURE_INCOMPAT_FILETYPE 0x0002 #define EXT4_FEATURE_INCOMPAT_RECOVER 0x0004 #define EXT4_FEATURE_INCOMPAT_JOURNAL_DEV 0x0008 #define EXT4_FEATURE_INCOMPAT_META_BG 0x0010 #define EXT4_FEATURE_INCOMPAT_EXTENTS 0x0040 #define EXT4_FEATURE_INCOMPAT_64BIT 0x0080 #define EXT4_FEATURE_INCOMPAT_MMP 0x0100 #define EXT4_FEATURE_INCOMPAT_FLEX_BG 0x0200 #define EXT4_FEATURE_INCOMPAT_EA_INODE 0x0400 #define EXT4_FEATURE_INCOMPAT_DIRDATA 0x1000 #define EXT4_FEATURE_INCOMPAT_ENCRYPT 0x10000 #define EXT4_FEATURE_INCOMPAT_CASEFOLD 0x20000 #define EXT4_FEATURE_COMPAT_SUPP EXT2_FEATURE_COMPAT_EXT_ATTR #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) #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) #define EXT4_DEF_RESUID 0 #define EXT4_DEF_RESGID 0 #define EXT4_DEF_INODE_READAHEAD_BLKS 32 #define EXT4_DEFM_DEBUG 0x0001 #define EXT4_DEFM_BSDGROUPS 0x0002 #define EXT4_DEFM_XATTR_USER 0x0004 #define EXT4_DEFM_ACL 0x0008 #define EXT4_DEFM_UID16 0x0010 #define EXT4_DEFM_JMODE 0x0060 #define EXT4_DEFM_JMODE_DATA 0x0020 #define EXT4_DEFM_JMODE_ORDERED 0x0040 #define EXT4_DEFM_JMODE_WBACK 0x0060 #define EXT4_DEF_MIN_BATCH_TIME 0 #define EXT4_DEF_MAX_BATCH_TIME 15000 #define EXT4_FLEX_SIZE_DIR_ALLOC_SCHEME 4 #define EXT4_NAME_LEN 255 struct ext4_dir_entry { __le32 inode; __le16 rec_len; __le16 name_len; char name[EXT4_NAME_LEN]; }; struct ext4_dir_entry_2 { __le32 inode; __le16 rec_len; __u8 name_len; __u8 file_type; char name[EXT4_NAME_LEN]; }; #define EXT4_FT_UNKNOWN 0 #define EXT4_FT_REG_FILE 1 #define EXT4_FT_DIR 2 #define EXT4_FT_CHRDEV 3 #define EXT4_FT_BLKDEV 4 #define EXT4_FT_FIFO 5 #define EXT4_FT_SOCK 6 #define EXT4_FT_SYMLINK 7 #define EXT4_FT_MAX 8 #define EXT4_DIR_PAD 4 #define EXT4_DIR_ROUND (EXT4_DIR_PAD - 1) #define EXT4_DIR_REC_LEN(name_len) (((name_len) + 8 + EXT4_DIR_ROUND) & ~EXT4_DIR_ROUND) #define EXT4_MAX_REC_LEN ((1 << 16) - 1) #define is_dx(dir) \ (EXT4_HAS_COMPAT_FEATURE((dir)->i_sb, EXT4_FEATURE_COMPAT_DIR_INDEX) && \ (EXT4_I(dir)->i_flags & EXT4_INDEX_FL)) #define EXT4_DIR_LINK_MAX(dir) (!is_dx(dir) && (dir)->i_nlink >= EXT4_LINK_MAX) #define EXT4_DIR_LINK_EMPTY(dir) ((dir)->i_nlink == 2 || (dir)->i_nlink == 1) #define DX_HASH_LEGACY 0 #define DX_HASH_HALF_MD4 1 #define DX_HASH_TEA 2 #define DX_HASH_LEGACY_UNSIGNED 3 #define DX_HASH_HALF_MD4_UNSIGNED 4 #define DX_HASH_TEA_UNSIGNED 5 #endif