http://www.ousob.com --- Legacy Redefined OuSob - File: /wwwroot/clipx/usr/include/linux/ext3_fs.h

/* * 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 */