diff options
Diffstat (limited to 'ext2fs/ext2_fs.h')
| -rw-r--r-- | ext2fs/ext2_fs.h | 506 |
1 files changed, 381 insertions, 125 deletions
diff --git a/ext2fs/ext2_fs.h b/ext2fs/ext2_fs.h index 9934ce85..b1caeefa 100644 --- a/ext2fs/ext2_fs.h +++ b/ext2fs/ext2_fs.h @@ -16,12 +16,7 @@ #ifndef _LINUX_EXT2_FS_H #define _LINUX_EXT2_FS_H -typedef unsigned long u32; -typedef long s32; -typedef unsigned short u16; -typedef short s16; -typedef unsigned char u8; -typedef signed char s8; +/* #include <linux/types.h> */ /* * The second extended filesystem constants/structures @@ -33,40 +28,28 @@ typedef signed char s8; #undef EXT2FS_DEBUG /* - * Define EXT2FS_DEBUG_CACHE to produce cache debug messages - */ -#undef EXT2FS_DEBUG_CACHE - -/* - * Define EXT2FS_CHECK_CACHE to add some checks to the name cache code - */ -#undef EXT2FS_CHECK_CACHE - -/* - * Define EXT2FS_PRE_02B_COMPAT to convert ext 2 fs prior to 0.2b - */ -#undef EXT2FS_PRE_02B_COMPAT - -/* * Define EXT2_PREALLOCATE to preallocate data blocks for expanding files */ #define EXT2_PREALLOCATE +#define EXT2_DEFAULT_PREALLOC_BLOCKS 8 /* * The second extended file system version */ -#define EXT2FS_DATE "95/03/19" -#define EXT2FS_VERSION "0.5a" +#define EXT2FS_DATE "95/08/09" +#define EXT2FS_VERSION "0.5b" /* * Debug code */ #ifdef EXT2FS_DEBUG -extern int ext2_debug_flag; -#define ext2_debug(f, a...) \ - do { if (ext2_debug_flag) printf ("ext2fs: (debug) %s: " f "\n", __FUNCTION__ , ## a); } while (0) +# define ext2_debug(f, a...) { \ + printk ("EXT2-fs DEBUG (%s, %d): %s:", \ + __FILE__, __LINE__, __FUNCTION__); \ + printk (f, ## a); \ + } #else -#define ext2_debug(f, a...) (void)0 +# define ext2_debug(f, a...) /**/ #endif /* @@ -78,12 +61,13 @@ extern int ext2_debug_flag; #define EXT2_ACL_DATA_INO 4 /* ACL inode */ #define EXT2_BOOT_LOADER_INO 5 /* Boot loader inode */ #define EXT2_UNDEL_DIR_INO 6 /* Undelete directory inode */ -#define EXT2_FIRST_INO 11 /* First non reserved inode */ + +/* First non-reserved inode for old ext2 filesystems */ +#define EXT2_GOOD_OLD_FIRST_INO 11 /* * The second extended file system magic number */ -#define EXT2_PRE_02B_MAGIC 0xEF51 #define EXT2_SUPER_MAGIC 0xEF53 /* @@ -103,13 +87,24 @@ extern int ext2_debug_flag; # 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)) +#define EXT2_ADDR_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / sizeof (__u32)) #ifdef __KERNEL__ -# define EXT2_BLOCK_SIZE_BITS(s) ((s)->u.ext2_sb.s_es->s_log_block_size + 10) +# define EXT2_BLOCK_SIZE_BITS(s) ((s)->s_blocksize_bits) #else # define EXT2_BLOCK_SIZE_BITS(s) ((s)->s_log_block_size + 10) #endif -#define EXT2_INODES_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / sizeof (struct ext2_inode)) +#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) +#else +#define EXT2_INODE_SIZE(s) (((s)->s_rev_level == EXT2_GOOD_OLD_REV) ? \ + 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) +#endif /* * Macro-instructions used to manage fragments @@ -130,45 +125,36 @@ extern int ext2_debug_flag; */ struct ext2_acl_header /* Header of Access Control Lists */ { - u32 aclh_size; - u32 aclh_file_count; - u32 aclh_acle_count; - u32 aclh_first_acle; + __u32 aclh_size; + __u32 aclh_file_count; + __u32 aclh_acle_count; + __u32 aclh_first_acle; }; struct ext2_acl_entry /* Access Control List Entry */ { - u32 acle_size; - u16 acle_perms; /* Access permissions */ - u16 acle_type; /* Type of entry */ - u16 acle_tag; /* User or group identity */ - u16 acle_pad1; - u32 acle_next; /* Pointer on next entry for the */ + __u32 acle_size; + __u16 acle_perms; /* Access permissions */ + __u16 acle_type; /* Type of entry */ + __u16 acle_tag; /* User or group identity */ + __u16 acle_pad1; + __u32 acle_next; /* Pointer on next entry for the */ /* same inode or on next free entry */ }; /* * Structure of a blocks group descriptor */ -struct ext2_old_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 */ -}; - struct ext2_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_pad; - u32 bg_reserved[3]; + __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]; }; /* @@ -178,6 +164,7 @@ struct ext2_group_desc # 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) #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)) @@ -203,6 +190,41 @@ struct ext2_group_desc #define EXT2_IMMUTABLE_FL 0x00000010 /* Immutable file */ #define EXT2_APPEND_FL 0x00000020 /* writes to file may only append */ #define EXT2_NODUMP_FL 0x00000040 /* do not dump file */ +#define EXT2_NOATIME_FL 0x00000080 /* do not update atime */ +/* Reserved for compression usage... */ +#define EXT2_DIRTY_FL 0x00000100 +#define EXT2_COMPRBLK_FL 0x00000200 /* One or more compressed clusters */ +#define EXT2_NOCOMP_FL 0x00000400 /* Don't compress */ +#define EXT2_ECOMPR_FL 0x00000800 /* Compression error */ +/* End compression flags --- maybe not all used */ +#define EXT2_BTREE_FL 0x00001000 /* btree format dir */ +#define EXT2_RESERVED_FL 0x80000000 /* reserved for ext2 lib */ + +#define EXT2_FL_USER_VISIBLE 0x00001FFF /* User visible flags */ +#define EXT2_FL_USER_MODIFIABLE 0x000000FF /* User modifiable flags */ + +/* Flags that should be inherited by new inodes from their parent. */ +#define EXT2_FL_INHERITED (EXT2_SECRM_FL | EXT2_UNRM_FL | EXT2_COMPR_FL |\ + EXT2_SYNC_FL | EXT2_NODUMP_FL |\ + EXT2_NOATIME_FL | EXT2_COMPRBLK_FL |\ + EXT2_NOCOMP_FL) + +/* Flags that are appropriate for regular files (all but dir-specific ones). */ +#define EXT2_REG_FLMASK (~(0)) + +/* Flags that are appropriate for non-directories/regular files. */ +#define EXT2_OTHER_FLMASK (EXT2_NODUMP_FL | EXT2_NOATIME_FL) + +/* Mask out flags that are inappropriate for the given type of inode. */ +static __inline__ __u32 ext2_mask_flags(mode_t mode, __u32 flags) +{ + if (S_ISDIR(mode)) + return flags; + else if (S_ISREG(mode)) + return flags & EXT2_REG_FLMASK; + else + return flags & EXT2_OTHER_FLMASK; +} /* * ioctl commands @@ -216,71 +238,78 @@ struct ext2_group_desc * Structure of an inode on the disk */ struct ext2_inode { - u16 i_mode; /* File mode */ - u16 i_uid; /* 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; /* Group Id */ - u16 i_links_count; /* Links count */ - u32 i_blocks; /* Blocks count */ - u32 i_flags; /* File flags */ + __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; + __u32 l_i_reserved1; } linux1; struct { - u32 h_i_translator; + __u32 h_i_translator; } hurd1; struct { - u32 m_i_reserved1; + __u32 m_i_reserved1; } masix1; } osd1; /* OS dependent 1 */ - u32 i_block[EXT2_N_BLOCKS];/* Pointers to blocks */ - u32 i_version; /* File version (for NFS) */ - u32 i_file_acl; /* File ACL */ - u32 i_dir_acl; /* Directory ACL */ - u32 i_faddr; /* Fragment address */ + __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; - u32 l_i_reserved2[2]; + __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; + __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]; + __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 */ }; +#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 #endif #ifdef __hurd__ #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_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_mode_high osd2.hurd2.h_i_mode_high #define i_author osd2.hurd2.h_i_author #endif @@ -310,6 +339,7 @@ struct ext2_inode { #define EXT2_MOUNT_ERRORS_RO 0x0020 /* Remount fs ro on errors */ #define EXT2_MOUNT_ERRORS_PANIC 0x0040 /* Panic on errors */ #define EXT2_MOUNT_MINIX_DF 0x0080 /* Mimics the Minix statfs */ +#define EXT2_MOUNT_NO_UID32 0x0200 /* Disable 32-bit UIDs */ #define clear_opt(o, opt) o &= ~EXT2_MOUNT_##opt #define set_opt(o, opt) o |= EXT2_MOUNT_##opt @@ -333,40 +363,122 @@ struct ext2_inode { * Structure of the super block */ struct ext2_super_block { - u32 s_inodes_count; /* Inodes count */ - u32 s_blocks_count; /* Blocks count */ - u32 s_r_blocks_count; /* Reserved blocks count */ - u32 s_free_blocks_count; /* Free blocks count */ - u32 s_free_inodes_count; /* Free inodes count */ - u32 s_first_data_block; /* First Data Block */ - u32 s_log_block_size; /* Block size */ - s32 s_log_frag_size; /* Fragment size */ - u32 s_blocks_per_group; /* # Blocks per group */ - u32 s_frags_per_group; /* # Fragments per group */ - u32 s_inodes_per_group; /* # Inodes per group */ - u32 s_mtime; /* Mount time */ - u32 s_wtime; /* Write time */ - u16 s_mnt_count; /* Mount count */ - s16 s_max_mnt_count; /* Maximal mount count */ - u16 s_magic; /* Magic signature */ - u16 s_state; /* File system state */ - u16 s_errors; /* Behaviour when detecting errors */ - u16 s_pad; - u32 s_lastcheck; /* time of last check */ - u32 s_checkinterval; /* max. time between checks */ - u32 s_creator_os; /* OS */ - u32 s_rev_level; /* Revision level */ - u16 s_def_resuid; /* Default uid for reserved blocks */ - u16 s_def_resgid; /* Default gid for reserved blocks */ - u32 s_reserved[235]; /* Padding to the end of the block */ + __u32 s_inodes_count; /* Inodes count */ + __u32 s_blocks_count; /* Blocks count */ + __u32 s_r_blocks_count; /* Reserved blocks count */ + __u32 s_free_blocks_count; /* Free blocks count */ + __u32 s_free_inodes_count; /* Free inodes count */ + __u32 s_first_data_block; /* First Data Block */ + __u32 s_log_block_size; /* Block size */ + __s32 s_log_frag_size; /* Fragment size */ + __u32 s_blocks_per_group; /* # Blocks per group */ + __u32 s_frags_per_group; /* # Fragments per group */ + __u32 s_inodes_per_group; /* # Inodes per group */ + __u32 s_mtime; /* Mount time */ + __u32 s_wtime; /* Write time */ + __u16 s_mnt_count; /* Mount count */ + __s16 s_max_mnt_count; /* Maximal mount count */ + __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 */ + __u32 s_lastcheck; /* time of last check */ + __u32 s_checkinterval; /* max. time between checks */ + __u32 s_creator_os; /* OS */ + __u32 s_rev_level; /* Revision level */ + __u16 s_def_resuid; /* Default uid for reserved blocks */ + __u16 s_def_resgid; /* Default gid for reserved blocks */ + /* + * These fields are for EXT2_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... + */ + __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 */ + __u32 s_algorithm_usage_bitmap; /* For compression */ + /* + * Performance hints. Directory preallocation should only + * happen if the EXT2_COMPAT_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_padding1; + __u32 s_reserved[204]; /* 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 + */ #define EXT2_OS_LINUX 0 #define EXT2_OS_HURD 1 #define EXT2_OS_MASIX 2 +#define EXT2_OS_FREEBSD 3 +#define EXT2_OS_LITES 4 -#define EXT2_CURRENT_REV 0 +/* + * 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_CURRENT_REV EXT2_GOOD_OLD_REV +#define EXT2_MAX_SUPP_REV EXT2_DYNAMIC_REV + +#define EXT2_GOOD_OLD_INODE_SIZE 128 + +/* + * Feature set definitions + */ +#define EXT2_HAS_COMPAT_FEATURE(sb,mask) \ + ( EXT2_SB(sb)->s_feature_compat & (mask) ) +#define EXT2_HAS_RO_COMPAT_FEATURE(sb,mask) \ + ( EXT2_SB(sb)->s_feature_ro_compat & (mask) ) +#define EXT2_HAS_INCOMPAT_FEATURE(sb,mask) \ + ( EXT2_SB(sb)->s_feature_incompat & (mask) ) + +#define EXT2_FEATURE_COMPAT_DIR_PREALLOC 0x0001 + +#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_INCOMPAT_COMPRESSION 0x0001 +#define EXT2_FEATURE_INCOMPAT_FILETYPE 0x0002 + +#define EXT2_FEATURE_COMPAT_SUPP 0 +#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 @@ -376,13 +488,42 @@ struct ext2_super_block { #define EXT2_NAME_LEN 255 struct ext2_dir_entry { - u32 inode; /* Inode number */ - u16 rec_len; /* Directory entry length */ - u16 name_len; /* Name length */ + __u32 inode; /* Inode number */ + __u16 rec_len; /* Directory entry length */ + __u16 name_len; /* Name length */ char name[EXT2_NAME_LEN]; /* File name */ }; /* + * The new version of the directory entry. Since EXT2 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 ext2_dir_entry_2 { + __u32 inode; /* Inode number */ + __u16 rec_len; /* Directory entry length */ + __u8 name_len; /* Name length */ + __u8 file_type; + char name[EXT2_NAME_LEN]; /* File name */ +}; + +/* + * Ext2 directory file types. Only the low 3 bits are used. The + * other bits are reserved for now. + */ +#define EXT2_FT_UNKNOWN 0 +#define EXT2_FT_REG_FILE 1 +#define EXT2_FT_DIR 2 +#define EXT2_FT_CHRDEV 3 +#define EXT2_FT_BLKDEV 4 +#define EXT2_FT_FIFO 5 +#define EXT2_FT_SOCK 6 +#define EXT2_FT_SYMLINK 7 + +#define EXT2_FT_MAX 8 + +/* * EXT2_DIR_PAD defines the directory entries boundaries * * NOTE: It must be a multiple of 4 @@ -392,4 +533,119 @@ struct ext2_dir_entry { #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_group_sparse(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 *); + +/* ialloc.c */ +extern struct inode * ext2_new_inode (const struct inode *, int, 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 long ext2_bmap (struct inode *, long); +extern int ext2_get_block (struct inode *, long, struct buffer_head *, int); + +extern struct buffer_head * ext2_getblk (struct inode *, long, int, int *); +extern int ext2_getblk_block (struct inode *, long, int, int *, int *); +extern struct buffer_head * ext2_bread (struct inode *, int, int, int *); + +extern int ext2_getcluster (struct inode * inode, long block); +extern void ext2_read_inode (struct inode *); +extern void ext2_write_inode (struct inode *); +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 void ext2_release (struct inode *, struct file *); +extern struct dentry *ext2_lookup (struct inode *, struct dentry *); +extern int ext2_create (struct inode *,struct dentry *,int); +extern int ext2_mkdir (struct inode *,struct dentry *,int); +extern int ext2_rmdir (struct inode *,struct dentry *); +extern int ext2_unlink (struct inode *,struct dentry *); +extern int ext2_symlink (struct inode *,struct dentry *,const char *); +extern int ext2_link (struct dentry *, struct inode *, struct dentry *); +extern int ext2_mknod (struct inode *, struct dentry *, int, int); +extern int ext2_rename (struct inode *, struct dentry *, + struct inode *, struct dentry *); + +/* 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_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 *, int); + +/* truncate.c */ +extern void ext2_truncate (struct inode *); + +/* + * Inodes and files operations + */ + +/* dir.c */ +extern struct inode_operations ext2_dir_inode_operations; + +/* file.c */ +extern struct inode_operations ext2_file_inode_operations; + +/* symlink.c */ +extern struct inode_operations ext2_symlink_inode_operations; +extern struct inode_operations ext2_fast_symlink_inode_operations; + +#endif /* __KERNEL__ */ + #endif /* _LINUX_EXT2_FS_H */ |