ext3_fs.h
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- /*
- * linux/include/linux/ext3_fs.h
- *
- * Copyright (C) 1992, 1993, 1994, 1995
- * Remy Card (card@masi.ibp.fr)
- * Laboratoire MASI - Institut Blaise Pascal
- * Universite Pierre et Marie Curie (Paris VI)
- *
- * from
- *
- * linux/include/linux/minix_fs.h
- *
- * Copyright (C) 1991, 1992 Linus Torvalds
- */
- #ifndef _LINUX_EXT3_FS_H
- #define _LINUX_EXT3_FS_H
- #include <linux/types.h>
- #include <linux/ext3_fs_i.h>
- #include <linux/ext3_fs_sb.h>
- struct statfs;
- /*
- * The second extended filesystem constants/structures
- */
- /*
- * Define EXT3FS_DEBUG to produce debug messages
- */
- #undef EXT3FS_DEBUG
- /*
- * Define EXT3_RESERVATION to reserve data blocks for expanding files
- */
- #define EXT3_DEFAULT_RESERVE_BLOCKS 8
- #define EXT3_MAX_RESERVE_BLOCKS 1024
- #define EXT3_RESERVE_WINDOW_NOT_ALLOCATED 0
- /*
- * Always enable hashed directories
- */
- #define CONFIG_EXT3_INDEX
- /*
- * Debug code
- */
- #ifdef EXT3FS_DEBUG
- #define ext3_debug(f, a...)
- do {
- printk (KERN_DEBUG "EXT3-fs DEBUG (%s, %d): %s:",
- __FILE__, __LINE__, __FUNCTION__);
- printk (KERN_DEBUG f, ## a);
- } while (0)
- #else
- #define ext3_debug(f, a...) do {} while (0)
- #endif
- /*
- * Special inodes numbers
- */
- #define EXT3_BAD_INO 1 /* Bad blocks inode */
- #define EXT3_ROOT_INO 2 /* Root inode */
- #define EXT3_BOOT_LOADER_INO 5 /* Boot loader inode */
- #define EXT3_UNDEL_DIR_INO 6 /* Undelete directory inode */
- #define EXT3_RESIZE_INO 7 /* Reserved group descriptors inode */
- #define EXT3_JOURNAL_INO 8 /* Journal inode */
- /* First non-reserved inode for old ext3 filesystems */
- #define EXT3_GOOD_OLD_FIRST_INO 11
- /*
- * The second extended file system magic number
- */
- #define EXT3_SUPER_MAGIC 0xEF53
- /*
- * Maximal count of links to a file
- */
- #define EXT3_LINK_MAX 32000
- /*
- * Macro-instructions used to manage several block sizes
- */
- #define EXT3_MIN_BLOCK_SIZE 1024
- #define EXT3_MAX_BLOCK_SIZE 4096
- #define EXT3_MIN_BLOCK_LOG_SIZE 10
- #ifdef __KERNEL__
- # define EXT3_BLOCK_SIZE(s) ((s)->s_blocksize)
- #else
- # define EXT3_BLOCK_SIZE(s) (EXT3_MIN_BLOCK_SIZE << (s)->s_log_block_size)
- #endif
- #define EXT3_ADDR_PER_BLOCK(s) (EXT3_BLOCK_SIZE(s) / sizeof (__u32))
- #ifdef __KERNEL__
- # define EXT3_BLOCK_SIZE_BITS(s) ((s)->s_blocksize_bits)
- #else
- # define EXT3_BLOCK_SIZE_BITS(s) ((s)->s_log_block_size + 10)
- #endif
- #ifdef __KERNEL__
- #define EXT3_ADDR_PER_BLOCK_BITS(s) (EXT3_SB(s)->s_addr_per_block_bits)
- #define EXT3_INODE_SIZE(s) (EXT3_SB(s)->s_inode_size)
- #define EXT3_FIRST_INO(s) (EXT3_SB(s)->s_first_ino)
- #else
- #define EXT3_INODE_SIZE(s) (((s)->s_rev_level == EXT3_GOOD_OLD_REV) ?
- EXT3_GOOD_OLD_INODE_SIZE :
- (s)->s_inode_size)
- #define EXT3_FIRST_INO(s) (((s)->s_rev_level == EXT3_GOOD_OLD_REV) ?
- EXT3_GOOD_OLD_FIRST_INO :
- (s)->s_first_ino)
- #endif
- /*
- * Macro-instructions used to manage fragments
- */
- #define EXT3_MIN_FRAG_SIZE 1024
- #define EXT3_MAX_FRAG_SIZE 4096
- #define EXT3_MIN_FRAG_LOG_SIZE 10
- #ifdef __KERNEL__
- # define EXT3_FRAG_SIZE(s) (EXT3_SB(s)->s_frag_size)
- # define EXT3_FRAGS_PER_BLOCK(s) (EXT3_SB(s)->s_frags_per_block)
- #else
- # define EXT3_FRAG_SIZE(s) (EXT3_MIN_FRAG_SIZE << (s)->s_log_frag_size)
- # define EXT3_FRAGS_PER_BLOCK(s) (EXT3_BLOCK_SIZE(s) / EXT3_FRAG_SIZE(s))
- #endif
- /*
- * Structure of a blocks group descriptor
- */
- struct ext3_group_desc
- {
- __le32 bg_block_bitmap; /* Blocks bitmap block */
- __le32 bg_inode_bitmap; /* Inodes bitmap block */
- __le32 bg_inode_table; /* Inodes table block */
- __le16 bg_free_blocks_count; /* Free blocks count */
- __le16 bg_free_inodes_count; /* Free inodes count */
- __le16 bg_used_dirs_count; /* Directories count */
- __u16 bg_pad;
- __le32 bg_reserved[3];
- };
- /*
- * Macro-instructions used to manage group descriptors
- */
- #ifdef __KERNEL__
- # define EXT3_BLOCKS_PER_GROUP(s) (EXT3_SB(s)->s_blocks_per_group)
- # define EXT3_DESC_PER_BLOCK(s) (EXT3_SB(s)->s_desc_per_block)
- # define EXT3_INODES_PER_GROUP(s) (EXT3_SB(s)->s_inodes_per_group)
- # define EXT3_DESC_PER_BLOCK_BITS(s) (EXT3_SB(s)->s_desc_per_block_bits)
- #else
- # define EXT3_BLOCKS_PER_GROUP(s) ((s)->s_blocks_per_group)
- # define EXT3_DESC_PER_BLOCK(s) (EXT3_BLOCK_SIZE(s) / sizeof (struct ext3_group_desc))
- # define EXT3_INODES_PER_GROUP(s) ((s)->s_inodes_per_group)
- #endif
- /*
- * Constants relative to the data blocks
- */
- #define EXT3_NDIR_BLOCKS 12
- #define EXT3_IND_BLOCK EXT3_NDIR_BLOCKS
- #define EXT3_DIND_BLOCK (EXT3_IND_BLOCK + 1)
- #define EXT3_TIND_BLOCK (EXT3_DIND_BLOCK + 1)
- #define EXT3_N_BLOCKS (EXT3_TIND_BLOCK + 1)
- /*
- * Inode flags
- */
- #define EXT3_SECRM_FL 0x00000001 /* Secure deletion */
- #define EXT3_UNRM_FL 0x00000002 /* Undelete */
- #define EXT3_COMPR_FL 0x00000004 /* Compress file */
- #define EXT3_SYNC_FL 0x00000008 /* Synchronous updates */
- #define EXT3_IMMUTABLE_FL 0x00000010 /* Immutable file */
- #define EXT3_APPEND_FL 0x00000020 /* writes to file may only append */
- #define EXT3_NODUMP_FL 0x00000040 /* do not dump file */
- #define EXT3_NOATIME_FL 0x00000080 /* do not update atime */
- /* Reserved for compression usage... */
- #define EXT3_DIRTY_FL 0x00000100
- #define EXT3_COMPRBLK_FL 0x00000200 /* One or more compressed clusters */
- #define EXT3_NOCOMPR_FL 0x00000400 /* Don't compress */
- #define EXT3_ECOMPR_FL 0x00000800 /* Compression error */
- /* End compression flags --- maybe not all used */
- #define EXT3_INDEX_FL 0x00001000 /* hash-indexed directory */
- #define EXT3_IMAGIC_FL 0x00002000 /* AFS directory */
- #define EXT3_JOURNAL_DATA_FL 0x00004000 /* file data should be journaled */
- #define EXT3_NOTAIL_FL 0x00008000 /* file tail should not be merged */
- #define EXT3_DIRSYNC_FL 0x00010000 /* dirsync behaviour (directories only) */
- #define EXT3_TOPDIR_FL 0x00020000 /* Top of directory hierarchies*/
- #define EXT3_RESERVED_FL 0x80000000 /* reserved for ext3 lib */
- #define EXT3_FL_USER_VISIBLE 0x0003DFFF /* User visible flags */
- #define EXT3_FL_USER_MODIFIABLE 0x000380FF /* User modifiable flags */
- /*
- * Inode dynamic state flags
- */
- #define EXT3_STATE_JDATA 0x00000001 /* journaled data exists */
- #define EXT3_STATE_NEW 0x00000002 /* inode is newly created */
- #define EXT3_STATE_XATTR 0x00000004 /* has in-inode xattrs */
- /* Used to pass group descriptor data when online resize is done */
- struct ext3_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;
- };
- /* The struct ext3_new_group_input in kernel space, with free_blocks_count */
- struct ext3_new_group_data {
- __u32 group;
- __u32 block_bitmap;
- __u32 inode_bitmap;
- __u32 inode_table;
- __u32 blocks_count;
- __u16 reserved_blocks;
- __u16 unused;
- __u32 free_blocks_count;
- };
- /*
- * ioctl commands
- */
- #define EXT3_IOC_GETFLAGS _IOR('f', 1, long)
- #define EXT3_IOC_SETFLAGS _IOW('f', 2, long)
- #define EXT3_IOC_GETVERSION _IOR('f', 3, long)
- #define EXT3_IOC_SETVERSION _IOW('f', 4, long)
- #define EXT3_IOC_GROUP_EXTEND _IOW('f', 7, unsigned long)
- #define EXT3_IOC_GROUP_ADD _IOW('f', 8,struct ext3_new_group_input)
- #define EXT3_IOC_GETVERSION_OLD _IOR('v', 1, long)
- #define EXT3_IOC_SETVERSION_OLD _IOW('v', 2, long)
- #ifdef CONFIG_JBD_DEBUG
- #define EXT3_IOC_WAIT_FOR_READONLY _IOR('f', 99, long)
- #endif
- #define EXT3_IOC_GETRSVSZ _IOR('f', 5, long)
- #define EXT3_IOC_SETRSVSZ _IOW('f', 6, long)
- /*
- * Mount options
- */
- struct ext3_mount_options {
- unsigned long s_mount_opt;
- uid_t s_resuid;
- gid_t s_resgid;
- unsigned long s_commit_interval;
- #ifdef CONFIG_QUOTA
- int s_jquota_fmt;
- char *s_qf_names[MAXQUOTAS];
- #endif
- };
- /*
- * Structure of an inode on the disk
- */
- struct ext3_inode {
- __le16 i_mode; /* File mode */
- __le16 i_uid; /* Low 16 bits of Owner Uid */
- __le32 i_size; /* Size in bytes */
- __le32 i_atime; /* Access time */
- __le32 i_ctime; /* Creation time */
- __le32 i_mtime; /* Modification time */
- __le32 i_dtime; /* Deletion Time */
- __le16 i_gid; /* Low 16 bits of Group Id */
- __le16 i_links_count; /* Links count */
- __le32 i_blocks; /* Blocks count */
- __le32 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 */
- __le32 i_block[EXT3_N_BLOCKS];/* Pointers to blocks */
- __le32 i_generation; /* File version (for NFS) */
- __le32 i_file_acl; /* File ACL */
- __le32 i_dir_acl; /* Directory ACL */
- __le32 i_faddr; /* Fragment address */
- union {
- struct {
- __u8 l_i_frag; /* Fragment number */
- __u8 l_i_fsize; /* Fragment size */
- __u16 i_pad1;
- __le16 l_i_uid_high; /* these 2 fields */
- __le16 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 */
- __le16 i_extra_isize;
- __le16 i_pad1;
- };
- #define i_size_high i_dir_acl
- #if defined(__KERNEL__) || defined(__linux__)
- #define i_reserved1 osd1.linux1.l_i_reserved1
- #define i_frag osd2.linux2.l_i_frag
- #define i_fsize osd2.linux2.l_i_fsize
- #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
- #elif defined(__GNU__)
- #define i_translator osd1.hurd1.h_i_translator
- #define i_frag osd2.hurd2.h_i_frag;
- #define i_fsize osd2.hurd2.h_i_fsize;
- #define i_uid_high osd2.hurd2.h_i_uid_high
- #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 /* defined(__KERNEL__) || defined(__linux__) */
- /*
- * File system states
- */
- #define EXT3_VALID_FS 0x0001 /* Unmounted cleanly */
- #define EXT3_ERROR_FS 0x0002 /* Errors detected */
- #define EXT3_ORPHAN_FS 0x0004 /* Orphans being recovered */
- /*
- * Mount flags
- */
- #define EXT3_MOUNT_CHECK 0x00001 /* Do mount-time checks */
- #define EXT3_MOUNT_OLDALLOC 0x00002 /* Don't use the new Orlov allocator */
- #define EXT3_MOUNT_GRPID 0x00004 /* Create files with directory's group */
- #define EXT3_MOUNT_DEBUG 0x00008 /* Some debugging messages */
- #define EXT3_MOUNT_ERRORS_CONT 0x00010 /* Continue on errors */
- #define EXT3_MOUNT_ERRORS_RO 0x00020 /* Remount fs ro on errors */
- #define EXT3_MOUNT_ERRORS_PANIC 0x00040 /* Panic on errors */
- #define EXT3_MOUNT_MINIX_DF 0x00080 /* Mimics the Minix statfs */
- #define EXT3_MOUNT_NOLOAD 0x00100 /* Don't use existing journal*/
- #define EXT3_MOUNT_ABORT 0x00200 /* Fatal error detected */
- #define EXT3_MOUNT_DATA_FLAGS 0x00C00 /* Mode for data writes: */
- #define EXT3_MOUNT_JOURNAL_DATA 0x00400 /* Write data to journal */
- #define EXT3_MOUNT_ORDERED_DATA 0x00800 /* Flush data before commit */
- #define EXT3_MOUNT_WRITEBACK_DATA 0x00C00 /* No data ordering */
- #define EXT3_MOUNT_UPDATE_JOURNAL 0x01000 /* Update the journal format */
- #define EXT3_MOUNT_NO_UID32 0x02000 /* Disable 32-bit UIDs */
- #define EXT3_MOUNT_XATTR_USER 0x04000 /* Extended user attributes */
- #define EXT3_MOUNT_POSIX_ACL 0x08000 /* POSIX Access Control Lists */
- #define EXT3_MOUNT_RESERVATION 0x10000 /* Preallocation */
- #define EXT3_MOUNT_BARRIER 0x20000 /* Use block barriers */
- #define EXT3_MOUNT_NOBH 0x40000 /* No bufferheads */
- #define EXT3_MOUNT_QUOTA 0x80000 /* Some quota option set */
- #define EXT3_MOUNT_USRQUOTA 0x100000 /* "old" user quota */
- #define EXT3_MOUNT_GRPQUOTA 0x200000 /* "old" group quota */
- /* Compatibility, for having both ext2_fs.h and ext3_fs.h included at once */
- #ifndef _LINUX_EXT2_FS_H
- #define clear_opt(o, opt) o &= ~EXT3_MOUNT_##opt
- #define set_opt(o, opt) o |= EXT3_MOUNT_##opt
- #define test_opt(sb, opt) (EXT3_SB(sb)->s_mount_opt &
- EXT3_MOUNT_##opt)
- #else
- #define EXT2_MOUNT_NOLOAD EXT3_MOUNT_NOLOAD
- #define EXT2_MOUNT_ABORT EXT3_MOUNT_ABORT
- #define EXT2_MOUNT_DATA_FLAGS EXT3_MOUNT_DATA_FLAGS
- #endif
- #define ext3_set_bit ext2_set_bit
- #define ext3_set_bit_atomic ext2_set_bit_atomic
- #define ext3_clear_bit ext2_clear_bit
- #define ext3_clear_bit_atomic ext2_clear_bit_atomic
- #define ext3_test_bit ext2_test_bit
- #define ext3_find_first_zero_bit ext2_find_first_zero_bit
- #define ext3_find_next_zero_bit ext2_find_next_zero_bit
- /*
- * Maximal mount counts between two filesystem checks
- */
- #define EXT3_DFL_MAX_MNT_COUNT 20 /* Allow 20 mounts */
- #define EXT3_DFL_CHECKINTERVAL 0 /* Don't use interval check */
- /*
- * Behaviour when detecting errors
- */
- #define EXT3_ERRORS_CONTINUE 1 /* Continue execution */
- #define EXT3_ERRORS_RO 2 /* Remount fs read-only */
- #define EXT3_ERRORS_PANIC 3 /* Panic */
- #define EXT3_ERRORS_DEFAULT EXT3_ERRORS_CONTINUE
- /*
- * Structure of the super block
- */
- struct ext3_super_block {
- /*00*/ __le32 s_inodes_count; /* Inodes count */
- __le32 s_blocks_count; /* Blocks count */
- __le32 s_r_blocks_count; /* Reserved blocks count */
- __le32 s_free_blocks_count; /* Free blocks count */
- /*10*/ __le32 s_free_inodes_count; /* Free inodes count */
- __le32 s_first_data_block; /* First Data Block */
- __le32 s_log_block_size; /* Block size */
- __le32 s_log_frag_size; /* Fragment size */
- /*20*/ __le32 s_blocks_per_group; /* # Blocks per group */
- __le32 s_frags_per_group; /* # Fragments per group */
- __le32 s_inodes_per_group; /* # Inodes per group */
- __le32 s_mtime; /* Mount time */
- /*30*/ __le32 s_wtime; /* Write time */
- __le16 s_mnt_count; /* Mount count */
- __le16 s_max_mnt_count; /* Maximal mount count */
- __le16 s_magic; /* Magic signature */
- __le16 s_state; /* File system state */
- __le16 s_errors; /* Behaviour when detecting errors */
- __le16 s_minor_rev_level; /* minor revision level */
- /*40*/ __le32 s_lastcheck; /* time of last check */
- __le32 s_checkinterval; /* max. time between checks */
- __le32 s_creator_os; /* OS */
- __le32 s_rev_level; /* Revision level */
- /*50*/ __le16 s_def_resuid; /* Default uid for reserved blocks */
- __le16 s_def_resgid; /* Default gid for reserved blocks */
- /*
- * These fields are for EXT3_DYNAMIC_REV superblocks only.
- *
- * Note: the difference between the compatible feature set and
- * 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...
- */
- __le32 s_first_ino; /* First non-reserved inode */
- __le16 s_inode_size; /* size of inode structure */
- __le16 s_block_group_nr; /* block group # of this superblock */
- __le32 s_feature_compat; /* compatible feature set */
- /*60*/ __le32 s_feature_incompat; /* incompatible feature set */
- __le32 s_feature_ro_compat; /* readonly-compatible feature set */
- /*68*/ __u8 s_uuid[16]; /* 128-bit uuid for volume */
- /*78*/ char s_volume_name[16]; /* volume name */
- /*88*/ char s_last_mounted[64]; /* directory where last mounted */
- /*C8*/ __le32 s_algorithm_usage_bitmap; /* For compression */
- /*
- * Performance hints. Directory preallocation should only
- * happen if the EXT3_FEATURE_COMPAT_DIR_PREALLOC flag is on.
- */
- __u8 s_prealloc_blocks; /* Nr of blocks to try to preallocate*/
- __u8 s_prealloc_dir_blocks; /* Nr to preallocate for dirs */
- __u16 s_reserved_gdt_blocks; /* Per group desc for online growth */
- /*
- * Journaling support valid if EXT3_FEATURE_COMPAT_HAS_JOURNAL set.
- */
- /*D0*/ __u8 s_journal_uuid[16]; /* uuid of journal superblock */
- /*E0*/ __le32 s_journal_inum; /* inode number of journal file */
- __le32 s_journal_dev; /* device number of journal file */
- __le32 s_last_orphan; /* start of list of inodes to delete */
- __le32 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;
- __le32 s_default_mount_opts;
- __le32 s_first_meta_bg; /* First metablock block group */
- __u32 s_reserved[190]; /* Padding to the end of the block */
- };
- #ifdef __KERNEL__
- static inline struct ext3_sb_info * EXT3_SB(struct super_block *sb)
- {
- return sb->s_fs_info;
- }
- static inline struct ext3_inode_info *EXT3_I(struct inode *inode)
- {
- return container_of(inode, struct ext3_inode_info, vfs_inode);
- }
- #else
- /* Assume that user mode programs are passing in an ext3fs superblock, not
- * a kernel struct super_block. This will allow us to call the feature-test
- * macros from user land. */
- #define EXT3_SB(sb) (sb)
- #endif
- #define NEXT_ORPHAN(inode) EXT3_I(inode)->i_dtime
- /*
- * Codes for operating systems
- */
- #define EXT3_OS_LINUX 0
- #define EXT3_OS_HURD 1
- #define EXT3_OS_MASIX 2
- #define EXT3_OS_FREEBSD 3
- #define EXT3_OS_LITES 4
- /*
- * Revision levels
- */
- #define EXT3_GOOD_OLD_REV 0 /* The good old (original) format */
- #define EXT3_DYNAMIC_REV 1 /* V2 format w/ dynamic inode sizes */
- #define EXT3_CURRENT_REV EXT3_GOOD_OLD_REV
- #define EXT3_MAX_SUPP_REV EXT3_DYNAMIC_REV
- #define EXT3_GOOD_OLD_INODE_SIZE 128
- /*
- * Feature set definitions
- */
- #define EXT3_HAS_COMPAT_FEATURE(sb,mask)
- ( EXT3_SB(sb)->s_es->s_feature_compat & cpu_to_le32(mask) )
- #define EXT3_HAS_RO_COMPAT_FEATURE(sb,mask)
- ( EXT3_SB(sb)->s_es->s_feature_ro_compat & cpu_to_le32(mask) )
- #define EXT3_HAS_INCOMPAT_FEATURE(sb,mask)
- ( EXT3_SB(sb)->s_es->s_feature_incompat & cpu_to_le32(mask) )
- #define EXT3_SET_COMPAT_FEATURE(sb,mask)
- EXT3_SB(sb)->s_es->s_feature_compat |= cpu_to_le32(mask)
- #define EXT3_SET_RO_COMPAT_FEATURE(sb,mask)
- EXT3_SB(sb)->s_es->s_feature_ro_compat |= cpu_to_le32(mask)
- #define EXT3_SET_INCOMPAT_FEATURE(sb,mask)
- EXT3_SB(sb)->s_es->s_feature_incompat |= cpu_to_le32(mask)
- #define EXT3_CLEAR_COMPAT_FEATURE(sb,mask)
- EXT3_SB(sb)->s_es->s_feature_compat &= ~cpu_to_le32(mask)
- #define EXT3_CLEAR_RO_COMPAT_FEATURE(sb,mask)
- EXT3_SB(sb)->s_es->s_feature_ro_compat &= ~cpu_to_le32(mask)
- #define EXT3_CLEAR_INCOMPAT_FEATURE(sb,mask)
- EXT3_SB(sb)->s_es->s_feature_incompat &= ~cpu_to_le32(mask)
- #define EXT3_FEATURE_COMPAT_DIR_PREALLOC 0x0001
- #define EXT3_FEATURE_COMPAT_IMAGIC_INODES 0x0002
- #define EXT3_FEATURE_COMPAT_HAS_JOURNAL 0x0004
- #define EXT3_FEATURE_COMPAT_EXT_ATTR 0x0008
- #define EXT3_FEATURE_COMPAT_RESIZE_INODE 0x0010
- #define EXT3_FEATURE_COMPAT_DIR_INDEX 0x0020
- #define EXT3_FEATURE_RO_COMPAT_SPARSE_SUPER 0x0001
- #define EXT3_FEATURE_RO_COMPAT_LARGE_FILE 0x0002
- #define EXT3_FEATURE_RO_COMPAT_BTREE_DIR 0x0004
- #define EXT3_FEATURE_INCOMPAT_COMPRESSION 0x0001
- #define EXT3_FEATURE_INCOMPAT_FILETYPE 0x0002
- #define EXT3_FEATURE_INCOMPAT_RECOVER 0x0004 /* Needs recovery */
- #define EXT3_FEATURE_INCOMPAT_JOURNAL_DEV 0x0008 /* Journal device */
- #define EXT3_FEATURE_INCOMPAT_META_BG 0x0010
- #define EXT3_FEATURE_COMPAT_SUPP EXT2_FEATURE_COMPAT_EXT_ATTR
- #define EXT3_FEATURE_INCOMPAT_SUPP (EXT3_FEATURE_INCOMPAT_FILETYPE|
- EXT3_FEATURE_INCOMPAT_RECOVER|
- EXT3_FEATURE_INCOMPAT_META_BG)
- #define EXT3_FEATURE_RO_COMPAT_SUPP (EXT3_FEATURE_RO_COMPAT_SPARSE_SUPER|
- EXT3_FEATURE_RO_COMPAT_LARGE_FILE|
- EXT3_FEATURE_RO_COMPAT_BTREE_DIR)
- /*
- * Default values for user and/or group using reserved blocks
- */
- #define EXT3_DEF_RESUID 0
- #define EXT3_DEF_RESGID 0
- /*
- * Default mount options
- */
- #define EXT3_DEFM_DEBUG 0x0001
- #define EXT3_DEFM_BSDGROUPS 0x0002
- #define EXT3_DEFM_XATTR_USER 0x0004
- #define EXT3_DEFM_ACL 0x0008
- #define EXT3_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 EXT3_NAME_LEN 255
- struct ext3_dir_entry {
- __le32 inode; /* Inode number */
- __le16 rec_len; /* Directory entry length */
- __le16 name_len; /* Name length */
- char name[EXT3_NAME_LEN]; /* File name */
- };
- /*
- * The new version of the directory entry. Since EXT3 structures are
- * stored in intel byte order, and the name_len field could never be
- * bigger than 255 chars, it's safe to reclaim the extra byte for the
- * file_type field.
- */
- struct ext3_dir_entry_2 {
- __le32 inode; /* Inode number */
- __le16 rec_len; /* Directory entry length */
- __u8 name_len; /* Name length */
- __u8 file_type;
- char name[EXT3_NAME_LEN]; /* File name */
- };
- /*
- * Ext3 directory file types. Only the low 3 bits are used. The
- * other bits are reserved for now.
- */
- #define EXT3_FT_UNKNOWN 0
- #define EXT3_FT_REG_FILE 1
- #define EXT3_FT_DIR 2
- #define EXT3_FT_CHRDEV 3
- #define EXT3_FT_BLKDEV 4
- #define EXT3_FT_FIFO 5
- #define EXT3_FT_SOCK 6
- #define EXT3_FT_SYMLINK 7
- #define EXT3_FT_MAX 8
- /*
- * EXT3_DIR_PAD defines the directory entries boundaries
- *
- * NOTE: It must be a multiple of 4
- */
- #define EXT3_DIR_PAD 4
- #define EXT3_DIR_ROUND (EXT3_DIR_PAD - 1)
- #define EXT3_DIR_REC_LEN(name_len) (((name_len) + 8 + EXT3_DIR_ROUND) &
- ~EXT3_DIR_ROUND)
- /*
- * Hash Tree Directory indexing
- * (c) Daniel Phillips, 2001
- */
- #ifdef CONFIG_EXT3_INDEX
- #define is_dx(dir) (EXT3_HAS_COMPAT_FEATURE(dir->i_sb,
- EXT3_FEATURE_COMPAT_DIR_INDEX) &&
- (EXT3_I(dir)->i_flags & EXT3_INDEX_FL))
- #define EXT3_DIR_LINK_MAX(dir) (!is_dx(dir) && (dir)->i_nlink >= EXT3_LINK_MAX)
- #define EXT3_DIR_LINK_EMPTY(dir) ((dir)->i_nlink == 2 || (dir)->i_nlink == 1)
- #else
- #define is_dx(dir) 0
- #define EXT3_DIR_LINK_MAX(dir) ((dir)->i_nlink >= EXT3_LINK_MAX)
- #define EXT3_DIR_LINK_EMPTY(dir) ((dir)->i_nlink == 2)
- #endif
- /* Legal values for the dx_root hash_version field: */
- #define DX_HASH_LEGACY 0
- #define DX_HASH_HALF_MD4 1
- #define DX_HASH_TEA 2
- /* hash info structure used by the directory hash */
- struct dx_hash_info
- {
- u32 hash;
- u32 minor_hash;
- int hash_version;
- u32 *seed;
- };
- #define EXT3_HTREE_EOF 0x7fffffff
- #ifdef __KERNEL__
- /*
- * Control parameters used by ext3_htree_next_block
- */
- #define HASH_NB_ALWAYS 1
- /*
- * Describe an inode's exact location on disk and in memory
- */
- struct ext3_iloc
- {
- struct buffer_head *bh;
- unsigned long offset;
- unsigned long block_group;
- };
- static inline struct ext3_inode *ext3_raw_inode(struct ext3_iloc *iloc)
- {
- return (struct ext3_inode *) (iloc->bh->b_data + iloc->offset);
- }
- /*
- * This structure is stuffed into the struct file's private_data field
- * for directories. It is where we put information so that we can do
- * readdir operations in hash tree order.
- */
- struct dir_private_info {
- struct rb_root root;
- struct rb_node *curr_node;
- struct fname *extra_fname;
- loff_t last_pos;
- __u32 curr_hash;
- __u32 curr_minor_hash;
- __u32 next_hash;
- };
- /*
- * Special error return code only used by dx_probe() and its callers.
- */
- #define ERR_BAD_DX_DIR -75000
- /*
- * Function prototypes
- */
- /*
- * Ok, these declarations are also in <linux/kernel.h> but none of the
- * ext3 source programs needs to include it so they are duplicated here.
- */
- # define NORET_TYPE /**/
- # define ATTRIB_NORET __attribute__((noreturn))
- # define NORET_AND noreturn,
- /* balloc.c */
- extern int ext3_bg_has_super(struct super_block *sb, int group);
- extern unsigned long ext3_bg_num_gdb(struct super_block *sb, int group);
- extern int ext3_new_block (handle_t *, struct inode *, unsigned long, int *);
- extern void ext3_free_blocks (handle_t *, struct inode *, unsigned long,
- unsigned long);
- extern void ext3_free_blocks_sb (handle_t *, struct super_block *,
- unsigned long, unsigned long, int *);
- extern unsigned long ext3_count_free_blocks (struct super_block *);
- extern void ext3_check_blocks_bitmap (struct super_block *);
- extern struct ext3_group_desc * ext3_get_group_desc(struct super_block * sb,
- unsigned int block_group,
- struct buffer_head ** bh);
- extern int ext3_should_retry_alloc(struct super_block *sb, int *retries);
- extern void ext3_init_block_alloc_info(struct inode *);
- extern void ext3_rsv_window_add(struct super_block *sb, struct ext3_reserve_window_node *rsv);
- /* dir.c */
- extern int ext3_check_dir_entry(const char *, struct inode *,
- struct ext3_dir_entry_2 *,
- struct buffer_head *, unsigned long);
- extern int ext3_htree_store_dirent(struct file *dir_file, __u32 hash,
- __u32 minor_hash,
- struct ext3_dir_entry_2 *dirent);
- extern void ext3_htree_free_dir_info(struct dir_private_info *p);
- /* fsync.c */
- extern int ext3_sync_file (struct file *, struct dentry *, int);
- /* hash.c */
- extern int ext3fs_dirhash(const char *name, int len, struct
- dx_hash_info *hinfo);
- /* ialloc.c */
- extern struct inode * ext3_new_inode (handle_t *, struct inode *, int);
- extern void ext3_free_inode (handle_t *, struct inode *);
- extern struct inode * ext3_orphan_get (struct super_block *, unsigned long);
- extern unsigned long ext3_count_free_inodes (struct super_block *);
- extern unsigned long ext3_count_dirs (struct super_block *);
- extern void ext3_check_inodes_bitmap (struct super_block *);
- extern unsigned long ext3_count_free (struct buffer_head *, unsigned);
- /* inode.c */
- extern int ext3_forget(handle_t *, int, struct inode *, struct buffer_head *, int);
- extern struct buffer_head * ext3_getblk (handle_t *, struct inode *, long, int, int *);
- extern struct buffer_head * ext3_bread (handle_t *, struct inode *, int, int, int *);
- extern void ext3_read_inode (struct inode *);
- extern int ext3_write_inode (struct inode *, int);
- extern int ext3_setattr (struct dentry *, struct iattr *);
- extern void ext3_delete_inode (struct inode *);
- extern int ext3_sync_inode (handle_t *, struct inode *);
- extern void ext3_discard_reservation (struct inode *);
- extern void ext3_dirty_inode(struct inode *);
- extern int ext3_change_inode_journal_flag(struct inode *, int);
- extern int ext3_get_inode_loc(struct inode *, struct ext3_iloc *);
- extern void ext3_truncate (struct inode *);
- extern void ext3_set_inode_flags(struct inode *);
- extern void ext3_set_aops(struct inode *inode);
- /* ioctl.c */
- extern int ext3_ioctl (struct inode *, struct file *, unsigned int,
- unsigned long);
- /* namei.c */
- extern int ext3_orphan_add(handle_t *, struct inode *);
- extern int ext3_orphan_del(handle_t *, struct inode *);
- extern int ext3_htree_fill_tree(struct file *dir_file, __u32 start_hash,
- __u32 start_minor_hash, __u32 *next_hash);
- /* resize.c */
- extern int ext3_group_add(struct super_block *sb,
- struct ext3_new_group_data *input);
- extern int ext3_group_extend(struct super_block *sb,
- struct ext3_super_block *es,
- unsigned long n_blocks_count);
- /* super.c */
- extern void ext3_error (struct super_block *, const char *, const char *, ...)
- __attribute__ ((format (printf, 3, 4)));
- extern void __ext3_std_error (struct super_block *, const char *, int);
- extern void ext3_abort (struct super_block *, const char *, const char *, ...)
- __attribute__ ((format (printf, 3, 4)));
- extern void ext3_warning (struct super_block *, const char *, const char *, ...)
- __attribute__ ((format (printf, 3, 4)));
- extern void ext3_update_dynamic_rev (struct super_block *sb);
- #define ext3_std_error(sb, errno)
- do {
- if ((errno))
- __ext3_std_error((sb), __FUNCTION__, (errno));
- } while (0)
- /*
- * Inodes and files operations
- */
- /* dir.c */
- extern struct file_operations ext3_dir_operations;
- /* file.c */
- extern struct inode_operations ext3_file_inode_operations;
- extern struct file_operations ext3_file_operations;
- /* namei.c */
- extern struct inode_operations ext3_dir_inode_operations;
- extern struct inode_operations ext3_special_inode_operations;
- /* symlink.c */
- extern struct inode_operations ext3_symlink_inode_operations;
- extern struct inode_operations ext3_fast_symlink_inode_operations;
- #endif /* __KERNEL__ */
- #endif /* _LINUX_EXT3_FS_H */