Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * linux/include/linux/ext3_fs.h |
| 3 | * |
| 4 | * Copyright (C) 1992, 1993, 1994, 1995 |
| 5 | * Remy Card (card@masi.ibp.fr) |
| 6 | * Laboratoire MASI - Institut Blaise Pascal |
| 7 | * Universite Pierre et Marie Curie (Paris VI) |
| 8 | * |
| 9 | * from |
| 10 | * |
| 11 | * linux/include/linux/minix_fs.h |
| 12 | * |
| 13 | * Copyright (C) 1991, 1992 Linus Torvalds |
| 14 | */ |
| 15 | |
| 16 | #ifndef _LINUX_EXT3_FS_H |
| 17 | #define _LINUX_EXT3_FS_H |
| 18 | |
| 19 | #include <linux/types.h> |
| 20 | #include <linux/ext3_fs_i.h> |
| 21 | #include <linux/ext3_fs_sb.h> |
| 22 | |
| 23 | |
| 24 | struct statfs; |
| 25 | |
| 26 | /* |
| 27 | * The second extended filesystem constants/structures |
| 28 | */ |
| 29 | |
| 30 | /* |
| 31 | * Define EXT3FS_DEBUG to produce debug messages |
| 32 | */ |
| 33 | #undef EXT3FS_DEBUG |
| 34 | |
| 35 | /* |
| 36 | * Define EXT3_RESERVATION to reserve data blocks for expanding files |
| 37 | */ |
| 38 | #define EXT3_DEFAULT_RESERVE_BLOCKS 8 |
Mingming Cao | b54e41e | 2006-03-26 01:37:57 -0800 | [diff] [blame] | 39 | /*max window size: 1024(direct blocks) + 3([t,d]indirect blocks) */ |
| 40 | #define EXT3_MAX_RESERVE_BLOCKS 1027 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | #define EXT3_RESERVE_WINDOW_NOT_ALLOCATED 0 |
| 42 | /* |
| 43 | * Always enable hashed directories |
| 44 | */ |
| 45 | #define CONFIG_EXT3_INDEX |
| 46 | |
| 47 | /* |
| 48 | * Debug code |
| 49 | */ |
| 50 | #ifdef EXT3FS_DEBUG |
| 51 | #define ext3_debug(f, a...) \ |
| 52 | do { \ |
| 53 | printk (KERN_DEBUG "EXT3-fs DEBUG (%s, %d): %s:", \ |
| 54 | __FILE__, __LINE__, __FUNCTION__); \ |
| 55 | printk (KERN_DEBUG f, ## a); \ |
| 56 | } while (0) |
| 57 | #else |
| 58 | #define ext3_debug(f, a...) do {} while (0) |
| 59 | #endif |
| 60 | |
| 61 | /* |
| 62 | * Special inodes numbers |
| 63 | */ |
| 64 | #define EXT3_BAD_INO 1 /* Bad blocks inode */ |
| 65 | #define EXT3_ROOT_INO 2 /* Root inode */ |
| 66 | #define EXT3_BOOT_LOADER_INO 5 /* Boot loader inode */ |
| 67 | #define EXT3_UNDEL_DIR_INO 6 /* Undelete directory inode */ |
| 68 | #define EXT3_RESIZE_INO 7 /* Reserved group descriptors inode */ |
| 69 | #define EXT3_JOURNAL_INO 8 /* Journal inode */ |
| 70 | |
| 71 | /* First non-reserved inode for old ext3 filesystems */ |
| 72 | #define EXT3_GOOD_OLD_FIRST_INO 11 |
| 73 | |
| 74 | /* |
| 75 | * The second extended file system magic number |
| 76 | */ |
| 77 | #define EXT3_SUPER_MAGIC 0xEF53 |
| 78 | |
| 79 | /* |
| 80 | * Maximal count of links to a file |
| 81 | */ |
| 82 | #define EXT3_LINK_MAX 32000 |
| 83 | |
| 84 | /* |
| 85 | * Macro-instructions used to manage several block sizes |
| 86 | */ |
| 87 | #define EXT3_MIN_BLOCK_SIZE 1024 |
| 88 | #define EXT3_MAX_BLOCK_SIZE 4096 |
| 89 | #define EXT3_MIN_BLOCK_LOG_SIZE 10 |
| 90 | #ifdef __KERNEL__ |
| 91 | # define EXT3_BLOCK_SIZE(s) ((s)->s_blocksize) |
| 92 | #else |
| 93 | # define EXT3_BLOCK_SIZE(s) (EXT3_MIN_BLOCK_SIZE << (s)->s_log_block_size) |
| 94 | #endif |
| 95 | #define EXT3_ADDR_PER_BLOCK(s) (EXT3_BLOCK_SIZE(s) / sizeof (__u32)) |
| 96 | #ifdef __KERNEL__ |
| 97 | # define EXT3_BLOCK_SIZE_BITS(s) ((s)->s_blocksize_bits) |
| 98 | #else |
| 99 | # define EXT3_BLOCK_SIZE_BITS(s) ((s)->s_log_block_size + 10) |
| 100 | #endif |
| 101 | #ifdef __KERNEL__ |
| 102 | #define EXT3_ADDR_PER_BLOCK_BITS(s) (EXT3_SB(s)->s_addr_per_block_bits) |
| 103 | #define EXT3_INODE_SIZE(s) (EXT3_SB(s)->s_inode_size) |
| 104 | #define EXT3_FIRST_INO(s) (EXT3_SB(s)->s_first_ino) |
| 105 | #else |
| 106 | #define EXT3_INODE_SIZE(s) (((s)->s_rev_level == EXT3_GOOD_OLD_REV) ? \ |
| 107 | EXT3_GOOD_OLD_INODE_SIZE : \ |
| 108 | (s)->s_inode_size) |
| 109 | #define EXT3_FIRST_INO(s) (((s)->s_rev_level == EXT3_GOOD_OLD_REV) ? \ |
| 110 | EXT3_GOOD_OLD_FIRST_INO : \ |
| 111 | (s)->s_first_ino) |
| 112 | #endif |
| 113 | |
| 114 | /* |
| 115 | * Macro-instructions used to manage fragments |
| 116 | */ |
| 117 | #define EXT3_MIN_FRAG_SIZE 1024 |
| 118 | #define EXT3_MAX_FRAG_SIZE 4096 |
| 119 | #define EXT3_MIN_FRAG_LOG_SIZE 10 |
| 120 | #ifdef __KERNEL__ |
| 121 | # define EXT3_FRAG_SIZE(s) (EXT3_SB(s)->s_frag_size) |
| 122 | # define EXT3_FRAGS_PER_BLOCK(s) (EXT3_SB(s)->s_frags_per_block) |
| 123 | #else |
| 124 | # define EXT3_FRAG_SIZE(s) (EXT3_MIN_FRAG_SIZE << (s)->s_log_frag_size) |
| 125 | # define EXT3_FRAGS_PER_BLOCK(s) (EXT3_BLOCK_SIZE(s) / EXT3_FRAG_SIZE(s)) |
| 126 | #endif |
| 127 | |
| 128 | /* |
| 129 | * Structure of a blocks group descriptor |
| 130 | */ |
| 131 | struct ext3_group_desc |
| 132 | { |
| 133 | __le32 bg_block_bitmap; /* Blocks bitmap block */ |
| 134 | __le32 bg_inode_bitmap; /* Inodes bitmap block */ |
| 135 | __le32 bg_inode_table; /* Inodes table block */ |
| 136 | __le16 bg_free_blocks_count; /* Free blocks count */ |
| 137 | __le16 bg_free_inodes_count; /* Free inodes count */ |
| 138 | __le16 bg_used_dirs_count; /* Directories count */ |
| 139 | __u16 bg_pad; |
| 140 | __le32 bg_reserved[3]; |
| 141 | }; |
| 142 | |
| 143 | /* |
| 144 | * Macro-instructions used to manage group descriptors |
| 145 | */ |
| 146 | #ifdef __KERNEL__ |
| 147 | # define EXT3_BLOCKS_PER_GROUP(s) (EXT3_SB(s)->s_blocks_per_group) |
| 148 | # define EXT3_DESC_PER_BLOCK(s) (EXT3_SB(s)->s_desc_per_block) |
| 149 | # define EXT3_INODES_PER_GROUP(s) (EXT3_SB(s)->s_inodes_per_group) |
| 150 | # define EXT3_DESC_PER_BLOCK_BITS(s) (EXT3_SB(s)->s_desc_per_block_bits) |
| 151 | #else |
| 152 | # define EXT3_BLOCKS_PER_GROUP(s) ((s)->s_blocks_per_group) |
| 153 | # define EXT3_DESC_PER_BLOCK(s) (EXT3_BLOCK_SIZE(s) / sizeof (struct ext3_group_desc)) |
| 154 | # define EXT3_INODES_PER_GROUP(s) ((s)->s_inodes_per_group) |
| 155 | #endif |
| 156 | |
| 157 | /* |
| 158 | * Constants relative to the data blocks |
| 159 | */ |
| 160 | #define EXT3_NDIR_BLOCKS 12 |
| 161 | #define EXT3_IND_BLOCK EXT3_NDIR_BLOCKS |
| 162 | #define EXT3_DIND_BLOCK (EXT3_IND_BLOCK + 1) |
| 163 | #define EXT3_TIND_BLOCK (EXT3_DIND_BLOCK + 1) |
| 164 | #define EXT3_N_BLOCKS (EXT3_TIND_BLOCK + 1) |
| 165 | |
| 166 | /* |
| 167 | * Inode flags |
| 168 | */ |
| 169 | #define EXT3_SECRM_FL 0x00000001 /* Secure deletion */ |
| 170 | #define EXT3_UNRM_FL 0x00000002 /* Undelete */ |
| 171 | #define EXT3_COMPR_FL 0x00000004 /* Compress file */ |
| 172 | #define EXT3_SYNC_FL 0x00000008 /* Synchronous updates */ |
| 173 | #define EXT3_IMMUTABLE_FL 0x00000010 /* Immutable file */ |
| 174 | #define EXT3_APPEND_FL 0x00000020 /* writes to file may only append */ |
| 175 | #define EXT3_NODUMP_FL 0x00000040 /* do not dump file */ |
| 176 | #define EXT3_NOATIME_FL 0x00000080 /* do not update atime */ |
| 177 | /* Reserved for compression usage... */ |
| 178 | #define EXT3_DIRTY_FL 0x00000100 |
| 179 | #define EXT3_COMPRBLK_FL 0x00000200 /* One or more compressed clusters */ |
| 180 | #define EXT3_NOCOMPR_FL 0x00000400 /* Don't compress */ |
| 181 | #define EXT3_ECOMPR_FL 0x00000800 /* Compression error */ |
| 182 | /* End compression flags --- maybe not all used */ |
| 183 | #define EXT3_INDEX_FL 0x00001000 /* hash-indexed directory */ |
| 184 | #define EXT3_IMAGIC_FL 0x00002000 /* AFS directory */ |
| 185 | #define EXT3_JOURNAL_DATA_FL 0x00004000 /* file data should be journaled */ |
| 186 | #define EXT3_NOTAIL_FL 0x00008000 /* file tail should not be merged */ |
| 187 | #define EXT3_DIRSYNC_FL 0x00010000 /* dirsync behaviour (directories only) */ |
| 188 | #define EXT3_TOPDIR_FL 0x00020000 /* Top of directory hierarchies*/ |
| 189 | #define EXT3_RESERVED_FL 0x80000000 /* reserved for ext3 lib */ |
| 190 | |
| 191 | #define EXT3_FL_USER_VISIBLE 0x0003DFFF /* User visible flags */ |
| 192 | #define EXT3_FL_USER_MODIFIABLE 0x000380FF /* User modifiable flags */ |
| 193 | |
| 194 | /* |
| 195 | * Inode dynamic state flags |
| 196 | */ |
| 197 | #define EXT3_STATE_JDATA 0x00000001 /* journaled data exists */ |
| 198 | #define EXT3_STATE_NEW 0x00000002 /* inode is newly created */ |
| 199 | #define EXT3_STATE_XATTR 0x00000004 /* has in-inode xattrs */ |
| 200 | |
| 201 | /* Used to pass group descriptor data when online resize is done */ |
| 202 | struct ext3_new_group_input { |
| 203 | __u32 group; /* Group number for this data */ |
| 204 | __u32 block_bitmap; /* Absolute block number of block bitmap */ |
| 205 | __u32 inode_bitmap; /* Absolute block number of inode bitmap */ |
| 206 | __u32 inode_table; /* Absolute block number of inode table start */ |
| 207 | __u32 blocks_count; /* Total number of blocks in this group */ |
| 208 | __u16 reserved_blocks; /* Number of reserved blocks in this group */ |
| 209 | __u16 unused; |
| 210 | }; |
| 211 | |
| 212 | /* The struct ext3_new_group_input in kernel space, with free_blocks_count */ |
| 213 | struct ext3_new_group_data { |
| 214 | __u32 group; |
| 215 | __u32 block_bitmap; |
| 216 | __u32 inode_bitmap; |
| 217 | __u32 inode_table; |
| 218 | __u32 blocks_count; |
| 219 | __u16 reserved_blocks; |
| 220 | __u16 unused; |
| 221 | __u32 free_blocks_count; |
| 222 | }; |
| 223 | |
| 224 | |
| 225 | /* |
| 226 | * ioctl commands |
| 227 | */ |
| 228 | #define EXT3_IOC_GETFLAGS _IOR('f', 1, long) |
| 229 | #define EXT3_IOC_SETFLAGS _IOW('f', 2, long) |
| 230 | #define EXT3_IOC_GETVERSION _IOR('f', 3, long) |
| 231 | #define EXT3_IOC_SETVERSION _IOW('f', 4, long) |
| 232 | #define EXT3_IOC_GROUP_EXTEND _IOW('f', 7, unsigned long) |
| 233 | #define EXT3_IOC_GROUP_ADD _IOW('f', 8,struct ext3_new_group_input) |
| 234 | #define EXT3_IOC_GETVERSION_OLD _IOR('v', 1, long) |
| 235 | #define EXT3_IOC_SETVERSION_OLD _IOW('v', 2, long) |
| 236 | #ifdef CONFIG_JBD_DEBUG |
| 237 | #define EXT3_IOC_WAIT_FOR_READONLY _IOR('f', 99, long) |
| 238 | #endif |
| 239 | #define EXT3_IOC_GETRSVSZ _IOR('f', 5, long) |
| 240 | #define EXT3_IOC_SETRSVSZ _IOW('f', 6, long) |
| 241 | |
| 242 | /* |
Jan Kara | 08c6a96 | 2005-07-12 13:58:28 -0700 | [diff] [blame] | 243 | * Mount options |
| 244 | */ |
| 245 | struct ext3_mount_options { |
| 246 | unsigned long s_mount_opt; |
| 247 | uid_t s_resuid; |
| 248 | gid_t s_resgid; |
| 249 | unsigned long s_commit_interval; |
| 250 | #ifdef CONFIG_QUOTA |
| 251 | int s_jquota_fmt; |
| 252 | char *s_qf_names[MAXQUOTAS]; |
| 253 | #endif |
| 254 | }; |
| 255 | |
| 256 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 257 | * Structure of an inode on the disk |
| 258 | */ |
| 259 | struct ext3_inode { |
| 260 | __le16 i_mode; /* File mode */ |
| 261 | __le16 i_uid; /* Low 16 bits of Owner Uid */ |
| 262 | __le32 i_size; /* Size in bytes */ |
| 263 | __le32 i_atime; /* Access time */ |
| 264 | __le32 i_ctime; /* Creation time */ |
| 265 | __le32 i_mtime; /* Modification time */ |
| 266 | __le32 i_dtime; /* Deletion Time */ |
| 267 | __le16 i_gid; /* Low 16 bits of Group Id */ |
| 268 | __le16 i_links_count; /* Links count */ |
| 269 | __le32 i_blocks; /* Blocks count */ |
| 270 | __le32 i_flags; /* File flags */ |
| 271 | union { |
| 272 | struct { |
| 273 | __u32 l_i_reserved1; |
| 274 | } linux1; |
| 275 | struct { |
| 276 | __u32 h_i_translator; |
| 277 | } hurd1; |
| 278 | struct { |
| 279 | __u32 m_i_reserved1; |
| 280 | } masix1; |
| 281 | } osd1; /* OS dependent 1 */ |
| 282 | __le32 i_block[EXT3_N_BLOCKS];/* Pointers to blocks */ |
| 283 | __le32 i_generation; /* File version (for NFS) */ |
| 284 | __le32 i_file_acl; /* File ACL */ |
| 285 | __le32 i_dir_acl; /* Directory ACL */ |
| 286 | __le32 i_faddr; /* Fragment address */ |
| 287 | union { |
| 288 | struct { |
| 289 | __u8 l_i_frag; /* Fragment number */ |
| 290 | __u8 l_i_fsize; /* Fragment size */ |
| 291 | __u16 i_pad1; |
| 292 | __le16 l_i_uid_high; /* these 2 fields */ |
| 293 | __le16 l_i_gid_high; /* were reserved2[0] */ |
| 294 | __u32 l_i_reserved2; |
| 295 | } linux2; |
| 296 | struct { |
| 297 | __u8 h_i_frag; /* Fragment number */ |
| 298 | __u8 h_i_fsize; /* Fragment size */ |
| 299 | __u16 h_i_mode_high; |
| 300 | __u16 h_i_uid_high; |
| 301 | __u16 h_i_gid_high; |
| 302 | __u32 h_i_author; |
| 303 | } hurd2; |
| 304 | struct { |
| 305 | __u8 m_i_frag; /* Fragment number */ |
| 306 | __u8 m_i_fsize; /* Fragment size */ |
| 307 | __u16 m_pad1; |
| 308 | __u32 m_i_reserved2[2]; |
| 309 | } masix2; |
| 310 | } osd2; /* OS dependent 2 */ |
| 311 | __le16 i_extra_isize; |
| 312 | __le16 i_pad1; |
| 313 | }; |
| 314 | |
| 315 | #define i_size_high i_dir_acl |
| 316 | |
| 317 | #if defined(__KERNEL__) || defined(__linux__) |
| 318 | #define i_reserved1 osd1.linux1.l_i_reserved1 |
| 319 | #define i_frag osd2.linux2.l_i_frag |
| 320 | #define i_fsize osd2.linux2.l_i_fsize |
| 321 | #define i_uid_low i_uid |
| 322 | #define i_gid_low i_gid |
| 323 | #define i_uid_high osd2.linux2.l_i_uid_high |
| 324 | #define i_gid_high osd2.linux2.l_i_gid_high |
| 325 | #define i_reserved2 osd2.linux2.l_i_reserved2 |
| 326 | |
| 327 | #elif defined(__GNU__) |
| 328 | |
| 329 | #define i_translator osd1.hurd1.h_i_translator |
| 330 | #define i_frag osd2.hurd2.h_i_frag; |
| 331 | #define i_fsize osd2.hurd2.h_i_fsize; |
| 332 | #define i_uid_high osd2.hurd2.h_i_uid_high |
| 333 | #define i_gid_high osd2.hurd2.h_i_gid_high |
| 334 | #define i_author osd2.hurd2.h_i_author |
| 335 | |
| 336 | #elif defined(__masix__) |
| 337 | |
| 338 | #define i_reserved1 osd1.masix1.m_i_reserved1 |
| 339 | #define i_frag osd2.masix2.m_i_frag |
| 340 | #define i_fsize osd2.masix2.m_i_fsize |
| 341 | #define i_reserved2 osd2.masix2.m_i_reserved2 |
| 342 | |
| 343 | #endif /* defined(__KERNEL__) || defined(__linux__) */ |
| 344 | |
| 345 | /* |
| 346 | * File system states |
| 347 | */ |
| 348 | #define EXT3_VALID_FS 0x0001 /* Unmounted cleanly */ |
| 349 | #define EXT3_ERROR_FS 0x0002 /* Errors detected */ |
| 350 | #define EXT3_ORPHAN_FS 0x0004 /* Orphans being recovered */ |
| 351 | |
| 352 | /* |
| 353 | * Mount flags |
| 354 | */ |
| 355 | #define EXT3_MOUNT_CHECK 0x00001 /* Do mount-time checks */ |
| 356 | #define EXT3_MOUNT_OLDALLOC 0x00002 /* Don't use the new Orlov allocator */ |
| 357 | #define EXT3_MOUNT_GRPID 0x00004 /* Create files with directory's group */ |
| 358 | #define EXT3_MOUNT_DEBUG 0x00008 /* Some debugging messages */ |
| 359 | #define EXT3_MOUNT_ERRORS_CONT 0x00010 /* Continue on errors */ |
| 360 | #define EXT3_MOUNT_ERRORS_RO 0x00020 /* Remount fs ro on errors */ |
| 361 | #define EXT3_MOUNT_ERRORS_PANIC 0x00040 /* Panic on errors */ |
| 362 | #define EXT3_MOUNT_MINIX_DF 0x00080 /* Mimics the Minix statfs */ |
| 363 | #define EXT3_MOUNT_NOLOAD 0x00100 /* Don't use existing journal*/ |
| 364 | #define EXT3_MOUNT_ABORT 0x00200 /* Fatal error detected */ |
| 365 | #define EXT3_MOUNT_DATA_FLAGS 0x00C00 /* Mode for data writes: */ |
| 366 | #define EXT3_MOUNT_JOURNAL_DATA 0x00400 /* Write data to journal */ |
| 367 | #define EXT3_MOUNT_ORDERED_DATA 0x00800 /* Flush data before commit */ |
| 368 | #define EXT3_MOUNT_WRITEBACK_DATA 0x00C00 /* No data ordering */ |
| 369 | #define EXT3_MOUNT_UPDATE_JOURNAL 0x01000 /* Update the journal format */ |
| 370 | #define EXT3_MOUNT_NO_UID32 0x02000 /* Disable 32-bit UIDs */ |
| 371 | #define EXT3_MOUNT_XATTR_USER 0x04000 /* Extended user attributes */ |
| 372 | #define EXT3_MOUNT_POSIX_ACL 0x08000 /* POSIX Access Control Lists */ |
| 373 | #define EXT3_MOUNT_RESERVATION 0x10000 /* Preallocation */ |
| 374 | #define EXT3_MOUNT_BARRIER 0x20000 /* Use block barriers */ |
| 375 | #define EXT3_MOUNT_NOBH 0x40000 /* No bufferheads */ |
Jan Kara | 1f54587 | 2005-06-23 22:01:04 -0700 | [diff] [blame] | 376 | #define EXT3_MOUNT_QUOTA 0x80000 /* Some quota option set */ |
Mark Bellon | 8fc2751 | 2005-09-06 15:16:54 -0700 | [diff] [blame] | 377 | #define EXT3_MOUNT_USRQUOTA 0x100000 /* "old" user quota */ |
| 378 | #define EXT3_MOUNT_GRPQUOTA 0x200000 /* "old" group quota */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 379 | |
| 380 | /* Compatibility, for having both ext2_fs.h and ext3_fs.h included at once */ |
| 381 | #ifndef _LINUX_EXT2_FS_H |
| 382 | #define clear_opt(o, opt) o &= ~EXT3_MOUNT_##opt |
| 383 | #define set_opt(o, opt) o |= EXT3_MOUNT_##opt |
| 384 | #define test_opt(sb, opt) (EXT3_SB(sb)->s_mount_opt & \ |
| 385 | EXT3_MOUNT_##opt) |
| 386 | #else |
| 387 | #define EXT2_MOUNT_NOLOAD EXT3_MOUNT_NOLOAD |
| 388 | #define EXT2_MOUNT_ABORT EXT3_MOUNT_ABORT |
| 389 | #define EXT2_MOUNT_DATA_FLAGS EXT3_MOUNT_DATA_FLAGS |
| 390 | #endif |
| 391 | |
| 392 | #define ext3_set_bit ext2_set_bit |
| 393 | #define ext3_set_bit_atomic ext2_set_bit_atomic |
| 394 | #define ext3_clear_bit ext2_clear_bit |
| 395 | #define ext3_clear_bit_atomic ext2_clear_bit_atomic |
| 396 | #define ext3_test_bit ext2_test_bit |
| 397 | #define ext3_find_first_zero_bit ext2_find_first_zero_bit |
| 398 | #define ext3_find_next_zero_bit ext2_find_next_zero_bit |
| 399 | |
| 400 | /* |
| 401 | * Maximal mount counts between two filesystem checks |
| 402 | */ |
| 403 | #define EXT3_DFL_MAX_MNT_COUNT 20 /* Allow 20 mounts */ |
| 404 | #define EXT3_DFL_CHECKINTERVAL 0 /* Don't use interval check */ |
| 405 | |
| 406 | /* |
| 407 | * Behaviour when detecting errors |
| 408 | */ |
| 409 | #define EXT3_ERRORS_CONTINUE 1 /* Continue execution */ |
| 410 | #define EXT3_ERRORS_RO 2 /* Remount fs read-only */ |
| 411 | #define EXT3_ERRORS_PANIC 3 /* Panic */ |
| 412 | #define EXT3_ERRORS_DEFAULT EXT3_ERRORS_CONTINUE |
| 413 | |
| 414 | /* |
| 415 | * Structure of the super block |
| 416 | */ |
| 417 | struct ext3_super_block { |
| 418 | /*00*/ __le32 s_inodes_count; /* Inodes count */ |
| 419 | __le32 s_blocks_count; /* Blocks count */ |
| 420 | __le32 s_r_blocks_count; /* Reserved blocks count */ |
| 421 | __le32 s_free_blocks_count; /* Free blocks count */ |
| 422 | /*10*/ __le32 s_free_inodes_count; /* Free inodes count */ |
| 423 | __le32 s_first_data_block; /* First Data Block */ |
| 424 | __le32 s_log_block_size; /* Block size */ |
| 425 | __le32 s_log_frag_size; /* Fragment size */ |
| 426 | /*20*/ __le32 s_blocks_per_group; /* # Blocks per group */ |
| 427 | __le32 s_frags_per_group; /* # Fragments per group */ |
| 428 | __le32 s_inodes_per_group; /* # Inodes per group */ |
| 429 | __le32 s_mtime; /* Mount time */ |
| 430 | /*30*/ __le32 s_wtime; /* Write time */ |
| 431 | __le16 s_mnt_count; /* Mount count */ |
| 432 | __le16 s_max_mnt_count; /* Maximal mount count */ |
| 433 | __le16 s_magic; /* Magic signature */ |
| 434 | __le16 s_state; /* File system state */ |
| 435 | __le16 s_errors; /* Behaviour when detecting errors */ |
| 436 | __le16 s_minor_rev_level; /* minor revision level */ |
| 437 | /*40*/ __le32 s_lastcheck; /* time of last check */ |
| 438 | __le32 s_checkinterval; /* max. time between checks */ |
| 439 | __le32 s_creator_os; /* OS */ |
| 440 | __le32 s_rev_level; /* Revision level */ |
| 441 | /*50*/ __le16 s_def_resuid; /* Default uid for reserved blocks */ |
| 442 | __le16 s_def_resgid; /* Default gid for reserved blocks */ |
| 443 | /* |
| 444 | * These fields are for EXT3_DYNAMIC_REV superblocks only. |
| 445 | * |
| 446 | * Note: the difference between the compatible feature set and |
| 447 | * the incompatible feature set is that if there is a bit set |
| 448 | * in the incompatible feature set that the kernel doesn't |
| 449 | * know about, it should refuse to mount the filesystem. |
| 450 | * |
| 451 | * e2fsck's requirements are more strict; if it doesn't know |
| 452 | * about a feature in either the compatible or incompatible |
| 453 | * feature set, it must abort and not try to meddle with |
| 454 | * things it doesn't understand... |
| 455 | */ |
| 456 | __le32 s_first_ino; /* First non-reserved inode */ |
| 457 | __le16 s_inode_size; /* size of inode structure */ |
| 458 | __le16 s_block_group_nr; /* block group # of this superblock */ |
| 459 | __le32 s_feature_compat; /* compatible feature set */ |
| 460 | /*60*/ __le32 s_feature_incompat; /* incompatible feature set */ |
| 461 | __le32 s_feature_ro_compat; /* readonly-compatible feature set */ |
| 462 | /*68*/ __u8 s_uuid[16]; /* 128-bit uuid for volume */ |
| 463 | /*78*/ char s_volume_name[16]; /* volume name */ |
| 464 | /*88*/ char s_last_mounted[64]; /* directory where last mounted */ |
| 465 | /*C8*/ __le32 s_algorithm_usage_bitmap; /* For compression */ |
| 466 | /* |
| 467 | * Performance hints. Directory preallocation should only |
| 468 | * happen if the EXT3_FEATURE_COMPAT_DIR_PREALLOC flag is on. |
| 469 | */ |
| 470 | __u8 s_prealloc_blocks; /* Nr of blocks to try to preallocate*/ |
| 471 | __u8 s_prealloc_dir_blocks; /* Nr to preallocate for dirs */ |
| 472 | __u16 s_reserved_gdt_blocks; /* Per group desc for online growth */ |
| 473 | /* |
| 474 | * Journaling support valid if EXT3_FEATURE_COMPAT_HAS_JOURNAL set. |
| 475 | */ |
| 476 | /*D0*/ __u8 s_journal_uuid[16]; /* uuid of journal superblock */ |
| 477 | /*E0*/ __le32 s_journal_inum; /* inode number of journal file */ |
| 478 | __le32 s_journal_dev; /* device number of journal file */ |
| 479 | __le32 s_last_orphan; /* start of list of inodes to delete */ |
| 480 | __le32 s_hash_seed[4]; /* HTREE hash seed */ |
| 481 | __u8 s_def_hash_version; /* Default hash version to use */ |
| 482 | __u8 s_reserved_char_pad; |
| 483 | __u16 s_reserved_word_pad; |
| 484 | __le32 s_default_mount_opts; |
| 485 | __le32 s_first_meta_bg; /* First metablock block group */ |
| 486 | __u32 s_reserved[190]; /* Padding to the end of the block */ |
| 487 | }; |
| 488 | |
| 489 | #ifdef __KERNEL__ |
| 490 | static inline struct ext3_sb_info * EXT3_SB(struct super_block *sb) |
| 491 | { |
| 492 | return sb->s_fs_info; |
| 493 | } |
| 494 | static inline struct ext3_inode_info *EXT3_I(struct inode *inode) |
| 495 | { |
| 496 | return container_of(inode, struct ext3_inode_info, vfs_inode); |
| 497 | } |
| 498 | #else |
| 499 | /* Assume that user mode programs are passing in an ext3fs superblock, not |
| 500 | * a kernel struct super_block. This will allow us to call the feature-test |
| 501 | * macros from user land. */ |
| 502 | #define EXT3_SB(sb) (sb) |
| 503 | #endif |
| 504 | |
| 505 | #define NEXT_ORPHAN(inode) EXT3_I(inode)->i_dtime |
| 506 | |
| 507 | /* |
| 508 | * Codes for operating systems |
| 509 | */ |
| 510 | #define EXT3_OS_LINUX 0 |
| 511 | #define EXT3_OS_HURD 1 |
| 512 | #define EXT3_OS_MASIX 2 |
| 513 | #define EXT3_OS_FREEBSD 3 |
| 514 | #define EXT3_OS_LITES 4 |
| 515 | |
| 516 | /* |
| 517 | * Revision levels |
| 518 | */ |
| 519 | #define EXT3_GOOD_OLD_REV 0 /* The good old (original) format */ |
| 520 | #define EXT3_DYNAMIC_REV 1 /* V2 format w/ dynamic inode sizes */ |
| 521 | |
| 522 | #define EXT3_CURRENT_REV EXT3_GOOD_OLD_REV |
| 523 | #define EXT3_MAX_SUPP_REV EXT3_DYNAMIC_REV |
| 524 | |
| 525 | #define EXT3_GOOD_OLD_INODE_SIZE 128 |
| 526 | |
| 527 | /* |
| 528 | * Feature set definitions |
| 529 | */ |
| 530 | |
| 531 | #define EXT3_HAS_COMPAT_FEATURE(sb,mask) \ |
| 532 | ( EXT3_SB(sb)->s_es->s_feature_compat & cpu_to_le32(mask) ) |
| 533 | #define EXT3_HAS_RO_COMPAT_FEATURE(sb,mask) \ |
| 534 | ( EXT3_SB(sb)->s_es->s_feature_ro_compat & cpu_to_le32(mask) ) |
| 535 | #define EXT3_HAS_INCOMPAT_FEATURE(sb,mask) \ |
| 536 | ( EXT3_SB(sb)->s_es->s_feature_incompat & cpu_to_le32(mask) ) |
| 537 | #define EXT3_SET_COMPAT_FEATURE(sb,mask) \ |
| 538 | EXT3_SB(sb)->s_es->s_feature_compat |= cpu_to_le32(mask) |
| 539 | #define EXT3_SET_RO_COMPAT_FEATURE(sb,mask) \ |
| 540 | EXT3_SB(sb)->s_es->s_feature_ro_compat |= cpu_to_le32(mask) |
| 541 | #define EXT3_SET_INCOMPAT_FEATURE(sb,mask) \ |
| 542 | EXT3_SB(sb)->s_es->s_feature_incompat |= cpu_to_le32(mask) |
| 543 | #define EXT3_CLEAR_COMPAT_FEATURE(sb,mask) \ |
| 544 | EXT3_SB(sb)->s_es->s_feature_compat &= ~cpu_to_le32(mask) |
| 545 | #define EXT3_CLEAR_RO_COMPAT_FEATURE(sb,mask) \ |
| 546 | EXT3_SB(sb)->s_es->s_feature_ro_compat &= ~cpu_to_le32(mask) |
| 547 | #define EXT3_CLEAR_INCOMPAT_FEATURE(sb,mask) \ |
| 548 | EXT3_SB(sb)->s_es->s_feature_incompat &= ~cpu_to_le32(mask) |
| 549 | |
| 550 | #define EXT3_FEATURE_COMPAT_DIR_PREALLOC 0x0001 |
| 551 | #define EXT3_FEATURE_COMPAT_IMAGIC_INODES 0x0002 |
| 552 | #define EXT3_FEATURE_COMPAT_HAS_JOURNAL 0x0004 |
| 553 | #define EXT3_FEATURE_COMPAT_EXT_ATTR 0x0008 |
| 554 | #define EXT3_FEATURE_COMPAT_RESIZE_INODE 0x0010 |
| 555 | #define EXT3_FEATURE_COMPAT_DIR_INDEX 0x0020 |
| 556 | |
| 557 | #define EXT3_FEATURE_RO_COMPAT_SPARSE_SUPER 0x0001 |
| 558 | #define EXT3_FEATURE_RO_COMPAT_LARGE_FILE 0x0002 |
| 559 | #define EXT3_FEATURE_RO_COMPAT_BTREE_DIR 0x0004 |
| 560 | |
| 561 | #define EXT3_FEATURE_INCOMPAT_COMPRESSION 0x0001 |
| 562 | #define EXT3_FEATURE_INCOMPAT_FILETYPE 0x0002 |
| 563 | #define EXT3_FEATURE_INCOMPAT_RECOVER 0x0004 /* Needs recovery */ |
| 564 | #define EXT3_FEATURE_INCOMPAT_JOURNAL_DEV 0x0008 /* Journal device */ |
| 565 | #define EXT3_FEATURE_INCOMPAT_META_BG 0x0010 |
| 566 | |
| 567 | #define EXT3_FEATURE_COMPAT_SUPP EXT2_FEATURE_COMPAT_EXT_ATTR |
| 568 | #define EXT3_FEATURE_INCOMPAT_SUPP (EXT3_FEATURE_INCOMPAT_FILETYPE| \ |
| 569 | EXT3_FEATURE_INCOMPAT_RECOVER| \ |
| 570 | EXT3_FEATURE_INCOMPAT_META_BG) |
| 571 | #define EXT3_FEATURE_RO_COMPAT_SUPP (EXT3_FEATURE_RO_COMPAT_SPARSE_SUPER| \ |
| 572 | EXT3_FEATURE_RO_COMPAT_LARGE_FILE| \ |
| 573 | EXT3_FEATURE_RO_COMPAT_BTREE_DIR) |
| 574 | |
| 575 | /* |
| 576 | * Default values for user and/or group using reserved blocks |
| 577 | */ |
| 578 | #define EXT3_DEF_RESUID 0 |
| 579 | #define EXT3_DEF_RESGID 0 |
| 580 | |
| 581 | /* |
| 582 | * Default mount options |
| 583 | */ |
| 584 | #define EXT3_DEFM_DEBUG 0x0001 |
| 585 | #define EXT3_DEFM_BSDGROUPS 0x0002 |
| 586 | #define EXT3_DEFM_XATTR_USER 0x0004 |
| 587 | #define EXT3_DEFM_ACL 0x0008 |
| 588 | #define EXT3_DEFM_UID16 0x0010 |
| 589 | #define EXT3_DEFM_JMODE 0x0060 |
| 590 | #define EXT3_DEFM_JMODE_DATA 0x0020 |
| 591 | #define EXT3_DEFM_JMODE_ORDERED 0x0040 |
| 592 | #define EXT3_DEFM_JMODE_WBACK 0x0060 |
| 593 | |
| 594 | /* |
| 595 | * Structure of a directory entry |
| 596 | */ |
| 597 | #define EXT3_NAME_LEN 255 |
| 598 | |
| 599 | struct ext3_dir_entry { |
| 600 | __le32 inode; /* Inode number */ |
| 601 | __le16 rec_len; /* Directory entry length */ |
| 602 | __le16 name_len; /* Name length */ |
| 603 | char name[EXT3_NAME_LEN]; /* File name */ |
| 604 | }; |
| 605 | |
| 606 | /* |
| 607 | * The new version of the directory entry. Since EXT3 structures are |
| 608 | * stored in intel byte order, and the name_len field could never be |
| 609 | * bigger than 255 chars, it's safe to reclaim the extra byte for the |
| 610 | * file_type field. |
| 611 | */ |
| 612 | struct ext3_dir_entry_2 { |
| 613 | __le32 inode; /* Inode number */ |
| 614 | __le16 rec_len; /* Directory entry length */ |
| 615 | __u8 name_len; /* Name length */ |
| 616 | __u8 file_type; |
| 617 | char name[EXT3_NAME_LEN]; /* File name */ |
| 618 | }; |
| 619 | |
| 620 | /* |
| 621 | * Ext3 directory file types. Only the low 3 bits are used. The |
| 622 | * other bits are reserved for now. |
| 623 | */ |
| 624 | #define EXT3_FT_UNKNOWN 0 |
| 625 | #define EXT3_FT_REG_FILE 1 |
| 626 | #define EXT3_FT_DIR 2 |
| 627 | #define EXT3_FT_CHRDEV 3 |
| 628 | #define EXT3_FT_BLKDEV 4 |
| 629 | #define EXT3_FT_FIFO 5 |
| 630 | #define EXT3_FT_SOCK 6 |
| 631 | #define EXT3_FT_SYMLINK 7 |
| 632 | |
| 633 | #define EXT3_FT_MAX 8 |
| 634 | |
| 635 | /* |
| 636 | * EXT3_DIR_PAD defines the directory entries boundaries |
| 637 | * |
| 638 | * NOTE: It must be a multiple of 4 |
| 639 | */ |
| 640 | #define EXT3_DIR_PAD 4 |
| 641 | #define EXT3_DIR_ROUND (EXT3_DIR_PAD - 1) |
| 642 | #define EXT3_DIR_REC_LEN(name_len) (((name_len) + 8 + EXT3_DIR_ROUND) & \ |
| 643 | ~EXT3_DIR_ROUND) |
| 644 | /* |
| 645 | * Hash Tree Directory indexing |
| 646 | * (c) Daniel Phillips, 2001 |
| 647 | */ |
| 648 | |
| 649 | #ifdef CONFIG_EXT3_INDEX |
| 650 | #define is_dx(dir) (EXT3_HAS_COMPAT_FEATURE(dir->i_sb, \ |
| 651 | EXT3_FEATURE_COMPAT_DIR_INDEX) && \ |
| 652 | (EXT3_I(dir)->i_flags & EXT3_INDEX_FL)) |
| 653 | #define EXT3_DIR_LINK_MAX(dir) (!is_dx(dir) && (dir)->i_nlink >= EXT3_LINK_MAX) |
| 654 | #define EXT3_DIR_LINK_EMPTY(dir) ((dir)->i_nlink == 2 || (dir)->i_nlink == 1) |
| 655 | #else |
| 656 | #define is_dx(dir) 0 |
| 657 | #define EXT3_DIR_LINK_MAX(dir) ((dir)->i_nlink >= EXT3_LINK_MAX) |
| 658 | #define EXT3_DIR_LINK_EMPTY(dir) ((dir)->i_nlink == 2) |
| 659 | #endif |
| 660 | |
| 661 | /* Legal values for the dx_root hash_version field: */ |
| 662 | |
| 663 | #define DX_HASH_LEGACY 0 |
| 664 | #define DX_HASH_HALF_MD4 1 |
| 665 | #define DX_HASH_TEA 2 |
| 666 | |
| 667 | /* hash info structure used by the directory hash */ |
| 668 | struct dx_hash_info |
| 669 | { |
| 670 | u32 hash; |
| 671 | u32 minor_hash; |
| 672 | int hash_version; |
| 673 | u32 *seed; |
| 674 | }; |
| 675 | |
| 676 | #define EXT3_HTREE_EOF 0x7fffffff |
| 677 | |
| 678 | #ifdef __KERNEL__ |
| 679 | /* |
| 680 | * Control parameters used by ext3_htree_next_block |
| 681 | */ |
| 682 | #define HASH_NB_ALWAYS 1 |
| 683 | |
| 684 | |
| 685 | /* |
| 686 | * Describe an inode's exact location on disk and in memory |
| 687 | */ |
| 688 | struct ext3_iloc |
| 689 | { |
| 690 | struct buffer_head *bh; |
| 691 | unsigned long offset; |
| 692 | unsigned long block_group; |
| 693 | }; |
| 694 | |
| 695 | static inline struct ext3_inode *ext3_raw_inode(struct ext3_iloc *iloc) |
| 696 | { |
| 697 | return (struct ext3_inode *) (iloc->bh->b_data + iloc->offset); |
| 698 | } |
| 699 | |
| 700 | /* |
| 701 | * This structure is stuffed into the struct file's private_data field |
| 702 | * for directories. It is where we put information so that we can do |
| 703 | * readdir operations in hash tree order. |
| 704 | */ |
| 705 | struct dir_private_info { |
| 706 | struct rb_root root; |
| 707 | struct rb_node *curr_node; |
| 708 | struct fname *extra_fname; |
| 709 | loff_t last_pos; |
| 710 | __u32 curr_hash; |
| 711 | __u32 curr_minor_hash; |
| 712 | __u32 next_hash; |
| 713 | }; |
| 714 | |
| 715 | /* |
| 716 | * Special error return code only used by dx_probe() and its callers. |
| 717 | */ |
| 718 | #define ERR_BAD_DX_DIR -75000 |
| 719 | |
| 720 | /* |
| 721 | * Function prototypes |
| 722 | */ |
| 723 | |
| 724 | /* |
| 725 | * Ok, these declarations are also in <linux/kernel.h> but none of the |
| 726 | * ext3 source programs needs to include it so they are duplicated here. |
| 727 | */ |
| 728 | # define NORET_TYPE /**/ |
| 729 | # define ATTRIB_NORET __attribute__((noreturn)) |
| 730 | # define NORET_AND noreturn, |
| 731 | |
| 732 | /* balloc.c */ |
| 733 | extern int ext3_bg_has_super(struct super_block *sb, int group); |
| 734 | extern unsigned long ext3_bg_num_gdb(struct super_block *sb, int group); |
| 735 | extern int ext3_new_block (handle_t *, struct inode *, unsigned long, int *); |
Mingming Cao | b54e41e | 2006-03-26 01:37:57 -0800 | [diff] [blame] | 736 | extern int ext3_new_blocks (handle_t *, struct inode *, unsigned long, |
| 737 | unsigned long *, int *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 738 | extern void ext3_free_blocks (handle_t *, struct inode *, unsigned long, |
| 739 | unsigned long); |
| 740 | extern void ext3_free_blocks_sb (handle_t *, struct super_block *, |
| 741 | unsigned long, unsigned long, int *); |
| 742 | extern unsigned long ext3_count_free_blocks (struct super_block *); |
| 743 | extern void ext3_check_blocks_bitmap (struct super_block *); |
| 744 | extern struct ext3_group_desc * ext3_get_group_desc(struct super_block * sb, |
| 745 | unsigned int block_group, |
| 746 | struct buffer_head ** bh); |
| 747 | extern int ext3_should_retry_alloc(struct super_block *sb, int *retries); |
| 748 | extern void ext3_init_block_alloc_info(struct inode *); |
| 749 | extern void ext3_rsv_window_add(struct super_block *sb, struct ext3_reserve_window_node *rsv); |
| 750 | |
| 751 | /* dir.c */ |
| 752 | extern int ext3_check_dir_entry(const char *, struct inode *, |
| 753 | struct ext3_dir_entry_2 *, |
| 754 | struct buffer_head *, unsigned long); |
| 755 | extern int ext3_htree_store_dirent(struct file *dir_file, __u32 hash, |
| 756 | __u32 minor_hash, |
| 757 | struct ext3_dir_entry_2 *dirent); |
| 758 | extern void ext3_htree_free_dir_info(struct dir_private_info *p); |
| 759 | |
| 760 | /* fsync.c */ |
| 761 | extern int ext3_sync_file (struct file *, struct dentry *, int); |
| 762 | |
| 763 | /* hash.c */ |
| 764 | extern int ext3fs_dirhash(const char *name, int len, struct |
| 765 | dx_hash_info *hinfo); |
| 766 | |
| 767 | /* ialloc.c */ |
| 768 | extern struct inode * ext3_new_inode (handle_t *, struct inode *, int); |
| 769 | extern void ext3_free_inode (handle_t *, struct inode *); |
| 770 | extern struct inode * ext3_orphan_get (struct super_block *, unsigned long); |
| 771 | extern unsigned long ext3_count_free_inodes (struct super_block *); |
| 772 | extern unsigned long ext3_count_dirs (struct super_block *); |
| 773 | extern void ext3_check_inodes_bitmap (struct super_block *); |
| 774 | extern unsigned long ext3_count_free (struct buffer_head *, unsigned); |
| 775 | |
| 776 | |
| 777 | /* inode.c */ |
Andrew Morton | d8733c2 | 2006-03-23 03:00:11 -0800 | [diff] [blame] | 778 | int ext3_forget(handle_t *, int, struct inode *, struct buffer_head *, int); |
| 779 | struct buffer_head * ext3_getblk (handle_t *, struct inode *, long, int, int *); |
| 780 | struct buffer_head * ext3_bread (handle_t *, struct inode *, int, int, int *); |
Mingming Cao | 89747d3 | 2006-03-26 01:37:55 -0800 | [diff] [blame] | 781 | int ext3_get_blocks_handle(handle_t *handle, struct inode *inode, |
| 782 | sector_t iblock, unsigned long maxblocks, struct buffer_head *bh_result, |
| 783 | int create, int extend_disksize); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 784 | |
| 785 | extern void ext3_read_inode (struct inode *); |
| 786 | extern int ext3_write_inode (struct inode *, int); |
| 787 | extern int ext3_setattr (struct dentry *, struct iattr *); |
| 788 | extern void ext3_delete_inode (struct inode *); |
| 789 | extern int ext3_sync_inode (handle_t *, struct inode *); |
| 790 | extern void ext3_discard_reservation (struct inode *); |
| 791 | extern void ext3_dirty_inode(struct inode *); |
| 792 | extern int ext3_change_inode_journal_flag(struct inode *, int); |
| 793 | extern int ext3_get_inode_loc(struct inode *, struct ext3_iloc *); |
| 794 | extern void ext3_truncate (struct inode *); |
| 795 | extern void ext3_set_inode_flags(struct inode *); |
| 796 | extern void ext3_set_aops(struct inode *inode); |
| 797 | |
| 798 | /* ioctl.c */ |
| 799 | extern int ext3_ioctl (struct inode *, struct file *, unsigned int, |
| 800 | unsigned long); |
| 801 | |
| 802 | /* namei.c */ |
| 803 | extern int ext3_orphan_add(handle_t *, struct inode *); |
| 804 | extern int ext3_orphan_del(handle_t *, struct inode *); |
| 805 | extern int ext3_htree_fill_tree(struct file *dir_file, __u32 start_hash, |
| 806 | __u32 start_minor_hash, __u32 *next_hash); |
| 807 | |
| 808 | /* resize.c */ |
| 809 | extern int ext3_group_add(struct super_block *sb, |
| 810 | struct ext3_new_group_data *input); |
| 811 | extern int ext3_group_extend(struct super_block *sb, |
| 812 | struct ext3_super_block *es, |
| 813 | unsigned long n_blocks_count); |
| 814 | |
| 815 | /* super.c */ |
| 816 | extern void ext3_error (struct super_block *, const char *, const char *, ...) |
| 817 | __attribute__ ((format (printf, 3, 4))); |
| 818 | extern void __ext3_std_error (struct super_block *, const char *, int); |
| 819 | extern void ext3_abort (struct super_block *, const char *, const char *, ...) |
| 820 | __attribute__ ((format (printf, 3, 4))); |
| 821 | extern void ext3_warning (struct super_block *, const char *, const char *, ...) |
| 822 | __attribute__ ((format (printf, 3, 4))); |
| 823 | extern void ext3_update_dynamic_rev (struct super_block *sb); |
| 824 | |
| 825 | #define ext3_std_error(sb, errno) \ |
| 826 | do { \ |
| 827 | if ((errno)) \ |
| 828 | __ext3_std_error((sb), __FUNCTION__, (errno)); \ |
| 829 | } while (0) |
| 830 | |
| 831 | /* |
| 832 | * Inodes and files operations |
| 833 | */ |
| 834 | |
| 835 | /* dir.c */ |
| 836 | extern struct file_operations ext3_dir_operations; |
| 837 | |
| 838 | /* file.c */ |
| 839 | extern struct inode_operations ext3_file_inode_operations; |
| 840 | extern struct file_operations ext3_file_operations; |
| 841 | |
| 842 | /* namei.c */ |
| 843 | extern struct inode_operations ext3_dir_inode_operations; |
| 844 | extern struct inode_operations ext3_special_inode_operations; |
| 845 | |
| 846 | /* symlink.c */ |
| 847 | extern struct inode_operations ext3_symlink_inode_operations; |
| 848 | extern struct inode_operations ext3_fast_symlink_inode_operations; |
| 849 | |
| 850 | |
| 851 | #endif /* __KERNEL__ */ |
| 852 | |
| 853 | #endif /* _LINUX_EXT3_FS_H */ |