#define EXT2FS_VERSION "0.5b"
/*
- * Special inodes numbers
+ * Special inode numbers
*/
-#define EXT2_BAD_INO 1 /* Bad blocks inode */
+#define EXT2_BAD_INO 1 /* Bad blocks inode */
#define EXT2_ROOT_INO 2 /* Root inode */
#define EXT2_ACL_IDX_INO 3 /* ACL inode */
#define EXT2_ACL_DATA_INO 4 /* ACL inode */
*/
#define EXT2_SUPER_MAGIC 0xEF53
+#ifdef __KERNEL__
+#define EXT2_SB(sb) (&((sb)->u.ext2_sb))
+#else
+/* Assume that user mode programs are passing in an ext2fs superblock, not
+ * a kernel struct super_block. This will allow us to call the feature-test
+ * macros from user land. */
+#define EXT2_SB(sb) (sb)
+#endif
+
/*
* Maximal count of links to a file
*/
/*
* Macro-instructions used to manage several block sizes
*/
-#define EXT2_MIN_BLOCK_SIZE 1024
-#define EXT2_MAX_BLOCK_SIZE 4096
-#define EXT2_MIN_BLOCK_LOG_SIZE 10
+#define EXT2_MIN_BLOCK_LOG_SIZE 10 /* 1024 */
+#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__
-# define EXT2_BLOCK_SIZE(s) ((s)->s_blocksize)
-#else
-# define EXT2_BLOCK_SIZE(s) (EXT2_MIN_BLOCK_SIZE << (s)->s_log_block_size)
-#endif
-#define EXT2_ACLE_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / sizeof (struct ext2_acl_entry))
-#define EXT2_ADDR_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / sizeof (__u32))
-#ifdef __KERNEL__
-# define EXT2_BLOCK_SIZE_BITS(s) ((s)->s_blocksize_bits)
-#else
-# define EXT2_BLOCK_SIZE_BITS(s) ((s)->s_log_block_size + 10)
-#endif
-#ifdef __KERNEL__
-#define EXT2_ADDR_PER_BLOCK_BITS(s) ((s)->u.ext2_sb.s_addr_per_block_bits)
-#define EXT2_INODE_SIZE(s) ((s)->u.ext2_sb.s_inode_size)
-#define EXT2_FIRST_INO(s) ((s)->u.ext2_sb.s_first_ino)
+#define EXT2_BLOCK_SIZE(s) ((s)->s_blocksize)
+#define EXT2_BLOCK_SIZE_BITS(s) ((s)->s_blocksize_bits)
+#define EXT2_ADDR_PER_BLOCK_BITS(s) (EXT2_SB(s)->addr_per_block_bits)
+#define EXT2_INODE_SIZE(s) (EXT2_SB(s)->s_inode_size)
+#define EXT2_FIRST_INO(s) (EXT2_SB(s)->s_first_ino)
#else
+#define EXT2_BLOCK_SIZE(s) (EXT2_MIN_BLOCK_SIZE << (s)->s_log_block_size)
+#define EXT2_BLOCK_SIZE_BITS(s) ((s)->s_log_block_size + 10)
#define EXT2_INODE_SIZE(s) (((s)->s_rev_level == EXT2_GOOD_OLD_REV) ? \
- EXT2_GOOD_OLD_INODE_SIZE : \
- (s)->s_inode_size)
+ EXT2_GOOD_OLD_INODE_SIZE : (s)->s_inode_size)
#define EXT2_FIRST_INO(s) (((s)->s_rev_level == EXT2_GOOD_OLD_REV) ? \
- EXT2_GOOD_OLD_FIRST_INO : \
- (s)->s_first_ino)
+ EXT2_GOOD_OLD_FIRST_INO : (s)->s_first_ino)
#endif
+#define EXT2_ADDR_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / sizeof(__u32))
/*
* Macro-instructions used to manage fragments
*/
-#define EXT2_MIN_FRAG_SIZE 1024
-#define EXT2_MAX_FRAG_SIZE 4096
-#define EXT2_MIN_FRAG_LOG_SIZE 10
+#define EXT2_MIN_FRAG_SIZE EXT2_MIN_BLOCK_SIZE
+#define EXT2_MAX_FRAG_SIZE EXT2_MAX_BLOCK_SIZE
+#define EXT2_MIN_FRAG_LOG_SIZE EXT2_MIN_BLOCK_LOG_SIZE
#ifdef __KERNEL__
-# define EXT2_FRAG_SIZE(s) ((s)->u.ext2_sb.s_frag_size)
-# define EXT2_FRAGS_PER_BLOCK(s) ((s)->u.ext2_sb.s_frags_per_block)
+# define EXT2_FRAG_SIZE(s) (EXT2_SB(s)->s_frag_size)
+# define EXT2_FRAGS_PER_BLOCK(s) (EXT2_SB(s)->s_frags_per_block)
#else
# define EXT2_FRAG_SIZE(s) (EXT2_MIN_FRAG_SIZE << (s)->s_log_frag_size)
# define EXT2_FRAGS_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / EXT2_FRAG_SIZE(s))
};
/*
+ * Data structures used by the directory indexing feature
+ *
+ * Note: all of the multibyte integer fields are little endian.
+ */
+
+/*
+ * Note: dx_root_info is laid out so that if it should somehow get
+ * overlaid by a dirent the two low bits of the hash version will be
+ * zero. Therefore, the hash version mod 4 should never be 0.
+ * Sincerely, the paranoia department.
+ */
+struct ext2_dx_root_info {
+ __u32 reserved_zero;
+ __u8 hash_version; /* 0 now, 1 at release */
+ __u8 info_length; /* 8 */
+ __u8 indirect_levels;
+ __u8 unused_flags;
+};
+
+#define EXT2_HASH_LEGACY 0
+#define EXT2_HASH_HALF_MD4 1
+#define EXT2_HASH_TEA 2
+
+#define EXT2_HASH_FLAG_INCOMPAT 0x1
+
+struct ext2_dx_entry {
+ __u32 hash;
+ __u32 block;
+};
+
+struct ext2_dx_countlimit {
+ __u16 limit;
+ __u16 count;
+};
+
+
+/*
* Macro-instructions used to manage group descriptors
*/
+#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))
+/* limits imposed by 16-bit value gd_free_{blocks,inode}_count */
+#define EXT2_MAX_BLOCKS_PER_GROUP(s) ((1 << 16) - 8)
+#define EXT2_MAX_INODES_PER_GROUP(s) ((1 << 16) - EXT2_INODES_PER_BLOCK(s))
#ifdef __KERNEL__
-# define EXT2_BLOCKS_PER_GROUP(s) ((s)->u.ext2_sb.s_blocks_per_group)
-# define EXT2_DESC_PER_BLOCK(s) ((s)->u.ext2_sb.s_desc_per_block)
-# define EXT2_INODES_PER_GROUP(s) ((s)->u.ext2_sb.s_inodes_per_group)
-# define EXT2_DESC_PER_BLOCK_BITS(s) ((s)->u.ext2_sb.s_desc_per_block_bits)
+#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_BLOCKS_PER_GROUP(s) ((s)->s_blocks_per_group)
-# define EXT2_DESC_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / sizeof (struct ext2_group_desc))
-# define EXT2_INODES_PER_GROUP(s) ((s)->s_inodes_per_group)
+#define EXT2_DESC_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / sizeof (struct ext2_group_desc))
#endif
/*
* Constants relative to the data blocks
*/
-#define EXT2_NDIR_BLOCKS 12
-#define EXT2_IND_BLOCK EXT2_NDIR_BLOCKS
-#define EXT2_DIND_BLOCK (EXT2_IND_BLOCK + 1)
-#define EXT2_TIND_BLOCK (EXT2_DIND_BLOCK + 1)
-#define EXT2_N_BLOCKS (EXT2_TIND_BLOCK + 1)
+#define EXT2_NDIR_BLOCKS 12
+#define EXT2_IND_BLOCK EXT2_NDIR_BLOCKS
+#define EXT2_DIND_BLOCK (EXT2_IND_BLOCK + 1)
+#define EXT2_TIND_BLOCK (EXT2_DIND_BLOCK + 1)
+#define EXT2_N_BLOCKS (EXT2_TIND_BLOCK + 1)
/*
* Inode flags
*/
-#define EXT2_SECRM_FL 0x00000001 /* Secure deletion */
-#define EXT2_UNRM_FL 0x00000002 /* Undelete */
-#define EXT2_COMPR_FL 0x00000004 /* Compress file */
+#define EXT2_SECRM_FL 0x00000001 /* Secure deletion */
+#define EXT2_UNRM_FL 0x00000002 /* Undelete */
+#define EXT2_COMPR_FL 0x00000004 /* Compress file */
#define EXT2_SYNC_FL 0x00000008 /* Synchronous updates */
#define EXT2_IMMUTABLE_FL 0x00000010 /* Immutable file */
#define EXT2_APPEND_FL 0x00000020 /* writes to file may only append */
/* Reserved for compression usage... */
#define EXT2_DIRTY_FL 0x00000100
#define EXT2_COMPRBLK_FL 0x00000200 /* One or more compressed clusters */
-#define EXT2_NOCOMPR_FL 0x00000400 /* Access raw compressed data */
+#define EXT2_NOCOMPR_FL 0x00000400 /* Access raw compressed data */
#define EXT2_ECOMPR_FL 0x00000800 /* Compression error */
-/* End compression flags --- maybe not all used */
+/* End compression flags --- maybe not all used */
#define EXT2_BTREE_FL 0x00001000 /* btree format dir */
#define EXT2_INDEX_FL 0x00001000 /* hash-indexed directory */
#define EXT2_IMAGIC_FL 0x00002000
#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 EXT3_EXTENTS_FL 0x00080000 /* Inode uses extents */
#define EXT2_RESERVED_FL 0x80000000 /* reserved for ext2 lib */
-#define EXT2_FL_USER_VISIBLE 0x0000DFFF /* User visible flags */
+#define EXT2_FL_USER_VISIBLE 0x0003DFFF /* User visible flags */
#define EXT2_FL_USER_MODIFIABLE 0x000080FF /* User modifiable flags */
/*
* ioctl commands
*/
-#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)
+
+/* 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 */
+};
+
+#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
} 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; /* Creation 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_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_file_acl; /* File ACL */
+ __u32 i_dir_acl; /* Directory ACL */
+ __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_uid_high; /* these 2 fields */
+ __u16 l_i_gid_high; /* were reserved2[0] */
+ __u32 l_i_reserved2;
+ } linux2;
+ struct {
+ __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;
+ struct {
+ __u8 m_i_frag; /* Fragment number */
+ __u8 m_i_fsize; /* Fragment size */
+ __u16 m_pad1;
+ __u32 m_i_reserved2[2];
+ } masix2;
+ } osd2; /* OS dependent 2 */
+ __u16 i_extra_isize;
+ __u16 i_pad1;
+};
+
#define i_size_high i_dir_acl
#if defined(__KERNEL__) || defined(__linux__)
#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__)
+#else
+#if 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 /* defined(__KERNEL) || defined(__linux__) */
+#endif /* __masix__ */
+#endif /* __GNU__ */
+#endif /* defined(__KERNEL__) || defined(__linux__) */
/*
* File system states
*/
-#define EXT2_VALID_FS 0x0001 /* Unmounted cleanly */
-#define EXT2_ERROR_FS 0x0002 /* Errors detected */
+#define EXT2_VALID_FS 0x0001 /* Unmounted cleanly */
+#define EXT2_ERROR_FS 0x0002 /* Errors detected */
/*
* Mount flags
#define clear_opt(o, opt) o &= ~EXT2_MOUNT_##opt
#define set_opt(o, opt) o |= EXT2_MOUNT_##opt
-#define test_opt(sb, opt) ((sb)->u.ext2_sb.s_mount_opt & \
+#define test_opt(sb, opt) (EXT2_SB(sb)->s_mount_opt & \
EXT2_MOUNT_##opt)
/*
* Maximal mount counts between two filesystem checks
__u16 s_magic; /* Magic signature */
__u16 s_state; /* File system state */
__u16 s_errors; /* Behaviour when detecting errors */
- __u16 s_minor_rev_level; /* minor revision level */
+ __u16 s_minor_rev_level; /* minor revision level */
__u32 s_lastcheck; /* time of last check */
__u32 s_checkinterval; /* max. time between checks */
__u32 s_creator_os; /* OS */
* the incompatible feature set is that if there is a bit set
* in the incompatible feature set that the kernel doesn't
* know about, it should refuse to mount the filesystem.
- *
+ *
* e2fsck's requirements are more strict; if it doesn't know
* about a feature in either the compatible or incompatible
* feature set, it must abort and not try to meddle with
* things it doesn't understand...
*/
- __u32 s_first_ino; /* First non-reserved inode */
- __u16 s_inode_size; /* size of inode structure */
- __u16 s_block_group_nr; /* block group # of this superblock */
- __u32 s_feature_compat; /* compatible feature set */
- __u32 s_feature_incompat; /* incompatible feature set */
- __u32 s_feature_ro_compat; /* readonly-compatible feature set */
+ __u32 s_first_ino; /* First non-reserved inode */
+ __u16 s_inode_size; /* size of inode structure */
+ __u16 s_block_group_nr; /* block group # of this superblock */
+ __u32 s_feature_compat; /* compatible feature set */
+ __u32 s_feature_incompat; /* incompatible feature set */
+ __u32 s_feature_ro_compat; /* readonly-compatible feature set */
__u8 s_uuid[16]; /* 128-bit uuid for volume */
- char s_volume_name[16]; /* volume name */
- char s_last_mounted[64]; /* directory where last mounted */
+ char s_volume_name[16]; /* volume name */
+ char s_last_mounted[64]; /* directory where last mounted */
__u32 s_algorithm_usage_bitmap; /* For compression */
/*
* Performance hints. Directory preallocation should only
*/
__u8 s_prealloc_blocks; /* Nr of blocks to try to preallocate*/
__u8 s_prealloc_dir_blocks; /* Nr to preallocate for dirs */
- __u16 s_padding1;
- /*
+ __u16 s_reserved_gdt_blocks; /* Per group table for online growth */
+ /*
* Journaling support valid if EXT2_FEATURE_COMPAT_HAS_JOURNAL set.
*/
__u8 s_journal_uuid[16]; /* uuid of journal superblock */
__u32 s_journal_inum; /* inode number of journal file */
__u32 s_journal_dev; /* device number of journal file */
__u32 s_last_orphan; /* start of list of inodes to delete */
-
- __u32 s_reserved[197]; /* Padding to the end of the block */
+ __u32 s_hash_seed[4]; /* HTREE hash seed */
+ __u8 s_def_hash_version; /* Default hash version to use */
+ __u8 s_jnl_backup_type; /* Default type of journal backup */
+ __u16 s_reserved_word_pad;
+ __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_reserved[172]; /* Padding to the end of the block */
};
-#ifdef __KERNEL__
-#define EXT2_SB(sb) (&((sb)->u.ext2_sb))
-#else
-/* Assume that user mode programs are passing in an ext2fs superblock, not
- * a kernel struct super_block. This will allow us to call the feature-test
- * macros from user land. */
-#define EXT2_SB(sb) (sb)
-#endif
-
/*
* Codes for operating systems
*/
* Revision levels
*/
#define EXT2_GOOD_OLD_REV 0 /* The good old (original) format */
-#define EXT2_DYNAMIC_REV 1 /* V2 format w/ dynamic inode sizes */
+#define EXT2_DYNAMIC_REV 1 /* V2 format w/ dynamic inode sizes */
#define EXT2_CURRENT_REV EXT2_GOOD_OLD_REV
#define EXT2_MAX_SUPP_REV EXT2_DYNAMIC_REV
#define EXT2_GOOD_OLD_INODE_SIZE 128
/*
+ * Journal inode backup types
+ */
+#define EXT3_JNL_BACKUP_BLOCKS 1
+
+/*
* Feature set definitions
*/
#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 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 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| \
EXT2_FEATURE_RO_COMPAT_BTREE_DIR)
/*
* Default values for user and/or group using reserved blocks
*/
-#define EXT2_DEF_RESUID 0
-#define EXT2_DEF_RESGID 0
+#define EXT2_DEF_RESUID 0
+#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_FT_REG_FILE 1
#define EXT2_FT_DIR 2
#define EXT2_FT_CHRDEV 3
-#define EXT2_FT_BLKDEV 4
+#define EXT2_FT_BLKDEV 4
#define EXT2_FT_FIFO 5
#define EXT2_FT_SOCK 6
#define EXT2_FT_SYMLINK 7
*
* NOTE: It must be a multiple of 4
*/
-#define EXT2_DIR_PAD 4
-#define EXT2_DIR_ROUND (EXT2_DIR_PAD - 1)
+#define EXT2_DIR_PAD 4
+#define EXT2_DIR_ROUND (EXT2_DIR_PAD - 1)
#define EXT2_DIR_REC_LEN(name_len) (((name_len) + 8 + EXT2_DIR_ROUND) & \
~EXT2_DIR_ROUND)
-#ifdef __KERNEL__
-/*
- * Function prototypes
- */
-
-/*
- * Ok, these declarations are also in <linux/kernel.h> but none of the
- * ext2 source programs needs to include it so they are duplicated here.
- */
-# define NORET_TYPE /**/
-# define ATTRIB_NORET __attribute__((noreturn))
-# define NORET_AND noreturn,
-
-/* acl.c */
-extern int ext2_permission (struct inode *, int);
-
-/* balloc.c */
-extern int ext2_bg_has_super(struct super_block *sb, int group);
-extern unsigned long ext2_bg_num_gdb(struct super_block *sb, int group);
-extern int ext2_new_block (const struct inode *, unsigned long,
- __u32 *, __u32 *, int *);
-extern void ext2_free_blocks (const struct inode *, unsigned long,
- unsigned long);
-extern unsigned long ext2_count_free_blocks (struct super_block *);
-extern void ext2_check_blocks_bitmap (struct super_block *);
-extern struct ext2_group_desc * ext2_get_group_desc(struct super_block * sb,
- unsigned int block_group,
- struct buffer_head ** bh);
-
-/* bitmap.c */
-extern unsigned long ext2_count_free (struct buffer_head *, unsigned);
-
-/* dir.c */
-extern int ext2_check_dir_entry (const char *, struct inode *,
- struct ext2_dir_entry_2 *, struct buffer_head *,
- unsigned long);
-
-/* file.c */
-extern int ext2_read (struct inode *, struct file *, char *, int);
-extern int ext2_write (struct inode *, struct file *, char *, int);
-
-/* fsync.c */
-extern int ext2_sync_file (struct file *, struct dentry *, int);
-extern int ext2_fsync_inode (struct inode *, int);
-
-/* ialloc.c */
-extern struct inode * ext2_new_inode (const struct inode *, int);
-extern void ext2_free_inode (struct inode *);
-extern unsigned long ext2_count_free_inodes (struct super_block *);
-extern void ext2_check_inodes_bitmap (struct super_block *);
-
-/* inode.c */
-
-extern struct buffer_head * ext2_getblk (struct inode *, long, int, int *);
-extern struct buffer_head * ext2_bread (struct inode *, int, int, int *);
-
-extern void ext2_read_inode (struct inode *);
-extern void ext2_write_inode (struct inode *, int);
-extern void ext2_put_inode (struct inode *);
-extern void ext2_delete_inode (struct inode *);
-extern int ext2_sync_inode (struct inode *);
-extern void ext2_discard_prealloc (struct inode *);
-
-/* ioctl.c */
-extern int ext2_ioctl (struct inode *, struct file *, unsigned int,
- unsigned long);
-
-/* namei.c */
-extern struct inode_operations ext2_dir_inode_operations;
-
-/* super.c */
-extern void ext2_error (struct super_block *, const char *, const char *, ...)
- __attribute__ ((format (printf, 3, 4)));
-extern NORET_TYPE void ext2_panic (struct super_block *, const char *,
- const char *, ...)
- __attribute__ ((NORET_AND format (printf, 3, 4)));
-extern void ext2_warning (struct super_block *, const char *, const char *, ...)
- __attribute__ ((format (printf, 3, 4)));
-extern void ext2_update_dynamic_rev (struct super_block *sb);
-extern void ext2_put_super (struct super_block *);
-extern void ext2_write_super (struct super_block *);
-extern int ext2_remount (struct super_block *, int *, char *);
-extern struct super_block * ext2_read_super (struct super_block *,void *,int);
-extern int ext2_statfs (struct super_block *, struct statfs *);
-
-/* truncate.c */
-extern void ext2_truncate (struct inode *);
-
-/*
- * Inodes and files operations
- */
-
-/* dir.c */
-extern struct file_operations ext2_dir_operations;
-
-/* file.c */
-extern struct inode_operations ext2_file_inode_operations;
-extern struct file_operations ext2_file_operations;
-
-/* symlink.c */
-extern struct inode_operations ext2_fast_symlink_inode_operations;
-
-extern struct address_space_operations ext2_aops;
-
-#endif /* __KERNEL__ */
-
#endif /* _LINUX_EXT2_FS_H */