/*
* Maximal count of links to a file
*/
-#define EXT2_LINK_MAX 32000
+#define EXT2_LINK_MAX 65000
/*
* Macro-instructions used to manage several block sizes
*/
#define EXT2_MIN_BLOCK_LOG_SIZE 10 /* 1024 */
-#define EXT2_MAX_BLOCK_LOG_SIZE 13 /* 8192 */
+#define EXT2_MAX_BLOCK_LOG_SIZE 16 /* 65536 */
#define EXT2_MIN_BLOCK_SIZE (1 << EXT2_MIN_BLOCK_LOG_SIZE)
#define EXT2_MAX_BLOCK_SIZE (1 << EXT2_MAX_BLOCK_LOG_SIZE)
#ifdef __KERNEL__
*/
struct ext2_group_desc
{
- __u32 bg_block_bitmap; /* Blocks bitmap block */
- __u32 bg_inode_bitmap; /* Inodes bitmap block */
+ __u32 bg_block_bitmap; /* Blocks bitmap block */
+ __u32 bg_inode_bitmap; /* Inodes bitmap block */
__u32 bg_inode_table; /* Inodes table block */
__u16 bg_free_blocks_count; /* Free blocks count */
__u16 bg_free_inodes_count; /* Free inodes count */
__u16 bg_used_dirs_count; /* Directories count */
- __u16 bg_pad;
- __u32 bg_reserved[3];
+ __u16 bg_flags;
+ __u32 bg_reserved[2];
+ __u16 bg_itable_unused; /* Unused inodes count */
+ __u16 bg_checksum; /* crc16(s_uuid+grouo_num+group_desc)*/
};
+struct ext4_group_desc
+{
+ __u32 bg_block_bitmap; /* Blocks bitmap block */
+ __u32 bg_inode_bitmap; /* Inodes bitmap block */
+ __u32 bg_inode_table; /* Inodes table block */
+ __u16 bg_free_blocks_count; /* Free blocks count */
+ __u16 bg_free_inodes_count; /* Free inodes count */
+ __u16 bg_used_dirs_count; /* Directories count */
+ __u16 bg_flags;
+ __u32 bg_reserved[2];
+ __u16 bg_itable_unused; /* Unused inodes count */
+ __u16 bg_checksum; /* crc16(s_uuid+grouo_num+group_desc)*/
+ __u32 bg_block_bitmap_hi; /* Blocks bitmap block MSB */
+ __u32 bg_inode_bitmap_hi; /* Inodes bitmap block MSB */
+ __u32 bg_inode_table_hi; /* Inodes table block MSB */
+ __u16 bg_free_blocks_count_hi;/* Free blocks count MSB */
+ __u16 bg_free_inodes_count_hi;/* Free inodes count MSB */
+ __u16 bg_used_dirs_count_hi; /* Directories count MSB */
+ __u16 bg_pad;
+ __u32 bg_reserved2[3];
+};
+
+#define EXT2_BG_INODE_UNINIT 0x0001 /* Inode table/bitmap not initialized */
+#define EXT2_BG_BLOCK_UNINIT 0x0002 /* Block bitmap not initialized */
+#define EXT2_BG_INODE_ZEROED 0x0004 /* On-disk itable initialized to zero */
+
/*
* Data structures used by the directory indexing feature
*
__u8 unused_flags;
};
-#define EXT2_HASH_LEGACY 0
-#define EXT2_HASH_HALF_MD4 1
-#define EXT2_HASH_HALF_MD4_SEED 2
-#define EXT2_HASH_HALF_MD4_64 3 /* SEED & 64 */
+#define EXT2_HASH_LEGACY 0
+#define EXT2_HASH_HALF_MD4 1
+#define EXT2_HASH_TEA 2
+#define EXT2_HASH_LEGACY_UNSIGNED 3 /* reserved for userspace lib */
+#define EXT2_HASH_HALF_MD4_UNSIGNED 4 /* reserved for userspace lib */
+#define EXT2_HASH_TEA_UNSIGNED 5 /* reserved for userspace lib */
#define EXT2_HASH_FLAG_INCOMPAT 0x1
/*
* Macro-instructions used to manage group descriptors
*/
+#define EXT2_MIN_DESC_SIZE 32
+#define EXT2_MIN_DESC_SIZE_64BIT 64
+#define EXT2_MAX_DESC_SIZE EXT2_MIN_BLOCK_SIZE
+#define EXT2_DESC_SIZE(s) \
+ ((EXT2_SB(s)->s_feature_incompat & EXT4_FEATURE_INCOMPAT_64BIT) ? \
+ (s)->s_desc_size : EXT2_MIN_DESC_SIZE)
+
#define EXT2_BLOCKS_PER_GROUP(s) (EXT2_SB(s)->s_blocks_per_group)
#define EXT2_INODES_PER_GROUP(s) (EXT2_SB(s)->s_inodes_per_group)
#define EXT2_INODES_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s)/EXT2_INODE_SIZE(s))
#define EXT2_DESC_PER_BLOCK(s) (EXT2_SB(s)->s_desc_per_block)
#define EXT2_DESC_PER_BLOCK_BITS(s) (EXT2_SB(s)->s_desc_per_block_bits)
#else
-#define EXT2_DESC_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / sizeof (struct ext2_group_desc))
+#define EXT2_DESC_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / EXT2_DESC_SIZE(s))
#endif
/*
#define EXT3_JOURNAL_DATA_FL 0x00004000 /* file data should be journaled */
#define EXT2_NOTAIL_FL 0x00008000 /* file tail should not be merged */
#define EXT2_DIRSYNC_FL 0x00010000 /* Synchronous directory modifications */
+#define EXT2_TOPDIR_FL 0x00020000 /* Top of directory hierarchies*/
+#define EXT4_HUGE_FILE_FL 0x00040000 /* Set to each huge file */
+#define EXT4_EXTENTS_FL 0x00080000 /* Inode uses extents */
#define EXT2_RESERVED_FL 0x80000000 /* reserved for ext2 lib */
-#define EXT2_FL_USER_VISIBLE 0x0001DFFF /* User visible flags */
+#define EXT2_FL_USER_VISIBLE 0x000BDFFF /* User visible flags */
#define EXT2_FL_USER_MODIFIABLE 0x000080FF /* User modifiable flags */
/*
* ioctl commands
*/
+
+/* Used for online resize */
+struct ext2_new_group_input {
+ __u32 group; /* Group number for this data */
+ __u32 block_bitmap; /* Absolute block number of block bitmap */
+ __u32 inode_bitmap; /* Absolute block number of inode bitmap */
+ __u32 inode_table; /* Absolute block number of inode table start */
+ __u32 blocks_count; /* Total number of blocks in this group */
+ __u16 reserved_blocks; /* Number of reserved blocks in this group */
+ __u16 unused; /* Number of reserved GDT blocks in group */
+};
+
+#ifdef __GNU__ /* Needed for the Hurd */
+#define _IOT_ext2_new_group_input _IOT (_IOTS(__u32), 5, _IOTS(__u16), 2, 0, 0)
+#endif
+
#define EXT2_IOC_GETFLAGS _IOR('f', 1, long)
#define EXT2_IOC_SETFLAGS _IOW('f', 2, long)
#define EXT2_IOC_GETVERSION _IOR('v', 1, long)
#define EXT2_IOC_SETVERSION _IOW('v', 2, long)
+#define EXT2_IOC_GETVERSION_NEW _IOR('f', 3, long)
+#define EXT2_IOC_SETVERSION_NEW _IOW('f', 4, long)
+#define EXT2_IOC_GROUP_EXTEND _IOW('f', 7, unsigned long)
+#define EXT2_IOC_GROUP_ADD _IOW('f', 8,struct ext2_new_group_input)
/*
* Structure of an inode on the disk
__u16 i_uid; /* Low 16 bits of Owner Uid */
__u32 i_size; /* Size in bytes */
__u32 i_atime; /* Access time */
- __u32 i_ctime; /* Creation time */
+ __u32 i_ctime; /* Inode change time */
__u32 i_mtime; /* Modification time */
__u32 i_dtime; /* Deletion Time */
__u16 i_gid; /* Low 16 bits of Group Id */
__u32 i_flags; /* File flags */
union {
struct {
- __u32 l_i_reserved1;
+ __u32 l_i_version; /* was l_i_reserved1 */
} linux1;
struct {
__u32 h_i_translator;
} hurd1;
- struct {
- __u32 m_i_reserved1;
- } masix1;
} osd1; /* OS dependent 1 */
__u32 i_block[EXT2_N_BLOCKS];/* Pointers to blocks */
__u32 i_generation; /* File version (for NFS) */
__u32 i_faddr; /* Fragment address */
union {
struct {
- __u8 l_i_frag; /* Fragment number */
- __u8 l_i_fsize; /* Fragment size */
- __u16 i_pad1;
+ __u16 l_i_blocks_hi;
+ __u16 l_i_file_acl_high;
__u16 l_i_uid_high; /* these 2 fields */
__u16 l_i_gid_high; /* were reserved2[0] */
__u32 l_i_reserved2;
__u16 h_i_gid_high;
__u32 h_i_author;
} hurd2;
+ } osd2; /* OS dependent 2 */
+};
+
+/*
+ * Permanent part of an large inode on the disk
+ */
+struct ext2_inode_large {
+ __u16 i_mode; /* File mode */
+ __u16 i_uid; /* Low 16 bits of Owner Uid */
+ __u32 i_size; /* Size in bytes */
+ __u32 i_atime; /* Access time */
+ __u32 i_ctime; /* Inode Change time */
+ __u32 i_mtime; /* Modification time */
+ __u32 i_dtime; /* Deletion Time */
+ __u16 i_gid; /* Low 16 bits of Group Id */
+ __u16 i_links_count; /* Links count */
+ __u32 i_blocks; /* Blocks count */
+ __u32 i_flags; /* File flags */
+ union {
+ struct {
+ __u32 l_i_version; /* was l_i_reserved1 */
+ } linux1;
+ struct {
+ __u32 h_i_translator;
+ } hurd1;
+ } osd1; /* OS dependent 1 */
+ __u32 i_block[EXT2_N_BLOCKS];/* Pointers to blocks */
+ __u32 i_generation; /* File version (for NFS) */
+ __u32 i_file_acl; /* File ACL */
+ __u32 i_dir_acl; /* Directory ACL */
+ __u32 i_faddr; /* Fragment address */
+ union {
+ struct {
+ __u16 l_i_blocks_hi;
+ __u16 l_i_file_acl_high;
+ __u16 l_i_uid_high; /* these 2 fields */
+ __u16 l_i_gid_high; /* were reserved2[0] */
+ __u32 l_i_reserved2;
+ } linux2;
struct {
- __u8 m_i_frag; /* Fragment number */
- __u8 m_i_fsize; /* Fragment size */
- __u16 m_pad1;
- __u32 m_i_reserved2[2];
- } masix2;
+ __u8 h_i_frag; /* Fragment number */
+ __u8 h_i_fsize; /* Fragment size */
+ __u16 h_i_mode_high;
+ __u16 h_i_uid_high;
+ __u16 h_i_gid_high;
+ __u32 h_i_author;
+ } hurd2;
} osd2; /* OS dependent 2 */
+ __u16 i_extra_isize;
+ __u16 i_pad1;
+ __u32 i_ctime_extra; /* extra Change time (nsec << 2 | epoch) */
+ __u32 i_mtime_extra; /* extra Modification time (nsec << 2 | epoch) */
+ __u32 i_atime_extra; /* extra Access time (nsec << 2 | epoch) */
+ __u32 i_crtime; /* File creation time */
+ __u32 i_crtime_extra; /* extra File creation time (nsec << 2 | epoch)*/
+ __u32 i_version_hi; /* high 32 bits for 64-bit version */
};
#define i_size_high i_dir_acl
#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
-
-#elif defined(__GNU__)
+#else
+#if defined(__GNU__)
#define i_translator osd1.hurd1.h_i_translator
#define i_frag osd2.hurd2.h_i_frag;
#define i_gid_high osd2.hurd2.h_i_gid_high
#define i_author osd2.hurd2.h_i_author
-#elif defined(__masix__)
-
-#define i_reserved1 osd1.masix1.m_i_reserved1
-#define i_frag osd2.masix2.m_i_frag
-#define i_fsize osd2.masix2.m_i_fsize
-#define i_reserved2 osd2.masix2.m_i_reserved2
-
+#endif /* __GNU__ */
#endif /* defined(__KERNEL__) || defined(__linux__) */
+#define inode_uid(inode) ((inode).i_uid | (inode).osd2.linux2.l_i_uid_high << 16)
+#define inode_gid(inode) ((inode).i_gid | (inode).osd2.linux2.l_i_gid_high << 16)
+#define ext2fs_set_i_uid_high(inode,x) ((inode).osd2.linux2.l_i_uid_high = (x))
+#define ext2fs_set_i_gid_high(inode,x) ((inode).osd2.linux2.l_i_gid_high = (x))
+
/*
* File system states
*/
#define EXT2_VALID_FS 0x0001 /* Unmounted cleanly */
#define EXT2_ERROR_FS 0x0002 /* Errors detected */
+#define EXT3_ORPHAN_FS 0x0004 /* Orphans being recovered */
+
+/*
+ * Misc. filesystem flags
+ */
+#define EXT2_FLAGS_SIGNED_HASH 0x0001 /* Signed dirhash in use */
+#define EXT2_FLAGS_UNSIGNED_HASH 0x0002 /* Unsigned dirhash in use */
+#define EXT2_FLAGS_TEST_FILESYS 0x0004 /* OK for use on development code */
/*
* Mount flags
__u32 s_last_orphan; /* start of list of inodes to delete */
__u32 s_hash_seed[4]; /* HTREE hash seed */
__u8 s_def_hash_version; /* Default hash version to use */
- __u8 s_reserved_char_pad;
- __u16 s_reserved_word_pad;
- __u32 s_reserved[192]; /* Padding to the end of the block */
+ __u8 s_jnl_backup_type; /* Default type of journal backup */
+ __u16 s_desc_size; /* Group desc. size: INCOMPAT_64BIT */
+ __u32 s_default_mount_opts;
+ __u32 s_first_meta_bg; /* First metablock group */
+ __u32 s_mkfs_time; /* When the filesystem was created */
+ __u32 s_jnl_blocks[17]; /* Backup of the journal inode */
+ __u32 s_blocks_count_hi; /* Blocks count high 32bits */
+ __u32 s_r_blocks_count_hi; /* Reserved blocks count high 32 bits*/
+ __u32 s_free_blocks_hi; /* Free blocks count */
+ __u16 s_min_extra_isize; /* All inodes have at least # bytes */
+ __u16 s_want_extra_isize; /* New inodes should reserve # bytes */
+ __u32 s_flags; /* Miscellaneous flags */
+ __u16 s_raid_stride; /* RAID stride */
+ __u16 s_mmp_interval; /* # seconds to wait in MMP checking */
+ __u64 s_mmp_block; /* Block for multi-mount protection */
+ __u32 s_raid_stripe_width; /* blocks on all data disks (N*stride)*/
+ __u8 s_log_groups_per_flex; /* FLEX_BG group size */
+ __u8 s_reserved_char_pad;
+ __u16 s_reserved_pad; /* Padding to next 32bits */
+ __u32 s_reserved[162]; /* Padding to the end of the block */
};
/*
*/
#define EXT2_OS_LINUX 0
#define EXT2_OS_HURD 1
-#define EXT2_OS_MASIX 2
+#define EXT2_OBSO_OS_MASIX 2
#define EXT2_OS_FREEBSD 3
#define EXT2_OS_LITES 4
#define EXT2_GOOD_OLD_INODE_SIZE 128
/*
+ * Journal inode backup types
+ */
+#define EXT3_JNL_BACKUP_BLOCKS 1
+
+/*
* Feature set definitions
*/
#define EXT2_FEATURE_COMPAT_EXT_ATTR 0x0008
#define EXT2_FEATURE_COMPAT_RESIZE_INODE 0x0010
#define EXT2_FEATURE_COMPAT_DIR_INDEX 0x0020
+#define EXT2_FEATURE_COMPAT_LAZY_BG 0x0040
#define EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER 0x0001
#define EXT2_FEATURE_RO_COMPAT_LARGE_FILE 0x0002
-#define EXT2_FEATURE_RO_COMPAT_BTREE_DIR 0x0004
+/* #define EXT2_FEATURE_RO_COMPAT_BTREE_DIR 0x0004 not used */
+#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 EXT2_FEATURE_INCOMPAT_COMPRESSION 0x0001
#define EXT2_FEATURE_INCOMPAT_FILETYPE 0x0002
#define EXT3_FEATURE_INCOMPAT_RECOVER 0x0004 /* Needs recovery */
#define EXT3_FEATURE_INCOMPAT_JOURNAL_DEV 0x0008 /* Journal device */
+#define EXT2_FEATURE_INCOMPAT_META_BG 0x0010
+#define EXT3_FEATURE_INCOMPAT_EXTENTS 0x0040
+#define EXT4_FEATURE_INCOMPAT_64BIT 0x0080
+#define EXT4_FEATURE_INCOMPAT_MMP 0x0100
+#define EXT4_FEATURE_INCOMPAT_FLEX_BG 0x0200
+
#define EXT2_FEATURE_COMPAT_SUPP 0
-#define EXT2_FEATURE_INCOMPAT_SUPP EXT2_FEATURE_INCOMPAT_FILETYPE
+#define EXT2_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE)
#define EXT2_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER| \
EXT2_FEATURE_RO_COMPAT_LARGE_FILE| \
+ EXT4_FEATURE_RO_COMPAT_DIR_NLINK| \
EXT2_FEATURE_RO_COMPAT_BTREE_DIR)
/*
#define EXT2_DEF_RESGID 0
/*
+ * Default mount options
+ */
+#define EXT2_DEFM_DEBUG 0x0001
+#define EXT2_DEFM_BSDGROUPS 0x0002
+#define EXT2_DEFM_XATTR_USER 0x0004
+#define EXT2_DEFM_ACL 0x0008
+#define EXT2_DEFM_UID16 0x0010
+#define EXT3_DEFM_JMODE 0x0060
+#define EXT3_DEFM_JMODE_DATA 0x0020
+#define EXT3_DEFM_JMODE_ORDERED 0x0040
+#define EXT3_DEFM_JMODE_WBACK 0x0060
+
+/*
* Structure of a directory entry
*/
#define EXT2_NAME_LEN 255
#define EXT2_DIR_REC_LEN(name_len) (((name_len) + 8 + EXT2_DIR_ROUND) & \
~EXT2_DIR_ROUND)
+/*
+ * This structure will be used for multiple mount protection. It will be
+ * written into the block number saved in the s_mmp_block field in the
+ * superblock.
+ */
+#define EXT2_MMP_MAGIC 0x004D4D50 /* ASCII for MMP */
+#define EXT2_MMP_CLEAN 0xFF4D4D50 /* Value of mmp_seq for clean unmount */
+#define EXT2_MMP_FSCK_ON 0xE24D4D50 /* Value of mmp_seq when being fscked */
+
+struct mmp_struct {
+ __u32 mmp_magic;
+ __u32 mmp_seq;
+ __u64 mmp_time;
+ char mmp_nodename[64];
+ char mmp_bdevname[32];
+ __u16 mmp_interval;
+ __u16 mmp_pad1;
+ __u32 mmp_pad2;
+};
+
+/*
+ * Interval in number of seconds to update the MMP sequence number.
+ */
+#define EXT2_MMP_DEF_INTERVAL 5
+
#endif /* _LINUX_EXT2_FS_H */
git://git.whamcloud.com / tools / e2fsprogs.git / blobdiff