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ext2_fs.h
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1 /*
2  * linux/include/linux/ext2_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 f(C) 1991, 1992 Linus Torvalds
14  */
15 
16 #pragma once
17 
18 #include "types.h" /* Changed from linux/types.h */
19 
20 /*
21  * The second extended filesystem constants/structures
22  */
23 
24 /*
25  * Define EXT2FS_DEBUG to produce debug messages
26  */
27 #undef EXT2FS_DEBUG
28 
29 /*
30  * Define EXT2_PREALLOCATE to preallocate data blocks for expanding files
31  */
32 #define EXT2_PREALLOCATE
33 #define EXT2_DEFAULT_PREALLOC_BLOCKS 8
34 
35 /*
36  * The second extended file system version
37  */
38 #define EXT2FS_DATE "95/08/09"
39 #define EXT2FS_VERSION "0.5b"
40 
41 /*
42  * Special inodes numbers
43  */
44 #define EXT2_BAD_INO 1 /* Bad blocks inode */
45 #define EXT2_ROOT_INO 2 /* Root inode */
46 #define EXT2_ACL_IDX_INO 3 /* ACL inode */
47 #define EXT2_ACL_DATA_INO 4 /* ACL inode */
48 #define EXT2_BOOT_LOADER_INO 5 /* Boot loader inode */
49 #define EXT2_UNDEL_DIR_INO 6 /* Undelete directory inode */
50 #define EXT2_RESIZE_INO 7 /* Reserved group descriptors inode */
51 #define EXT2_JOURNAL_INO 8 /* Journal inode */
52 
53 /* First non-reserved inode for old ext2 filesystems */
54 #define EXT2_GOOD_OLD_FIRST_INO 11
55 
56 /*
57  * The second extended file system magic number
58  */
59 #define EXT2_SUPER_MAGIC 0xEF53
60 
61 /*
62  * Maximal count of links to a file
63  */
64 #define EXT2_LINK_MAX 32000
65 
66 /*
67  * Macro-instructions used to manage several block sizes
68  */
69 #define EXT2_MIN_BLOCK_SIZE 1024
70 #define EXT2_MAX_BLOCK_SIZE 4096
71 #define EXT2_MIN_BLOCK_LOG_SIZE 10
72 #ifdef __KERNEL__
73 # define EXT2_BLOCK_SIZE(s) ((s)->s_blocksize)
74 #else
75 # define EXT2_BLOCK_SIZE(s) (EXT2_MIN_BLOCK_SIZE << (s)->s_log_block_size)
76 #endif
77 #define EXT2_ACLE_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / sizeof (struct ext2_acl_entry))
78 #define EXT2_ADDR_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / sizeof (__u32))
79 #ifdef __KERNEL__
80 # define EXT2_BLOCK_SIZE_BITS(s) ((s)->s_blocksize_bits)
81 #else
82 # define EXT2_BLOCK_SIZE_BITS(s) ((s)->s_log_block_size + 10)
83 #endif
84 #ifdef __KERNEL__
85 #define EXT2_ADDR_PER_BLOCK_BITS(s) ((s)->u.ext2_sb.s_addr_per_block_bits)
86 #define EXT2_INODE_SIZE(s) ((s)->u.ext2_sb.s_inode_size)
87 #define EXT2_FIRST_INO(s) ((s)->u.ext2_sb.s_first_ino)
88 #else
89 #define EXT2_INODE_SIZE(s) (((s)->s_rev_level == EXT2_GOOD_OLD_REV) ? \
90  EXT2_GOOD_OLD_INODE_SIZE : \
91  (s)->s_inode_size)
92 #define EXT2_FIRST_INO(s) (((s)->s_rev_level == EXT2_GOOD_OLD_REV) ? \
93  EXT2_GOOD_OLD_FIRST_INO : \
94  (s)->s_first_ino)
95 #endif
96 
97 /*
98  * Macro-instructions used to manage fragments
99  */
100 #define EXT2_MIN_FRAG_SIZE 1024
101 #define EXT2_MAX_FRAG_SIZE 4096
102 #define EXT2_MIN_FRAG_LOG_SIZE 10
103 #ifdef __KERNEL__
104 # define EXT2_FRAG_SIZE(s) ((s)->u.ext2_sb.s_frag_size)
105 # define EXT2_FRAGS_PER_BLOCK(s) ((s)->u.ext2_sb.s_frags_per_block)
106 #else
107 # define EXT2_FRAG_SIZE(s) (EXT2_MIN_FRAG_SIZE << (s)->s_log_frag_size)
108 # define EXT2_FRAGS_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / EXT2_FRAG_SIZE(s))
109 #endif
110 
111 /*
112  * ACL structures
113  */
114 struct ext2_acl_header /* Header of Access Control Lists */
115 {
120 };
121 
122 struct ext2_acl_entry /* Access Control List Entry */
123 {
125  __u16 acle_perms; /* Access permissions */
126  __u16 acle_type; /* Type of entry */
127  __u16 acle_tag; /* User or group identity */
129  __u32 acle_next; /* Pointer on next entry for the */
130  /* same inode or on next free entry */
131 };
132 
133 /*
134  * Structure of a blocks group descriptor
135  */
136 struct ext2_group_desc
137 {
138  __u32 bg_block_bitmap; /* Blocks bitmap block */
139  __u32 bg_inode_bitmap; /* Inodes bitmap block */
140  __u32 bg_inode_table; /* Inodes table block */
141  __u16 bg_free_blocks_count; /* Free blocks count */
142  __u16 bg_free_inodes_count; /* Free inodes count */
143  __u16 bg_used_dirs_count; /* Directories count */
144  __u16 bg_pad;
145  __u32 bg_reserved[3];
146 };
147 
148 /*
149  * Data structures used by the directory indexing feature
150  *
151  * Note: all of the multibyte integer fields are little endian.
152  */
153 
154 /*
155  * Note: dx_root_info is laid out so that if it should somehow get
156  * overlaid by a dirent the two low bits of the hash version will be
157  * zero. Therefore, the hash version mod 4 should never be 0.
158  * Sincerely, the paranoia department.
159  */
162  __u8 hash_version; /* 0 now, 1 at release */
163  __u8 info_length; /* 8 */
166 };
167 
171 };
172 
176 };
177 
178 
179 /*
180  * Macro-instructions used to manage group descriptors
181  */
182 #ifdef __KERNEL__
183 # define EXT2_BLOCKS_PER_GROUP(s) ((s)->u.ext2_sb.s_blocks_per_group)
184 # define EXT2_DESC_PER_BLOCK(s) ((s)->u.ext2_sb.s_desc_per_block)
185 # define EXT2_INODES_PER_GROUP(s) ((s)->u.ext2_sb.s_inodes_per_group)
186 # define EXT2_DESC_PER_BLOCK_BITS(s) ((s)->u.ext2_sb.s_desc_per_block_bits)
187 #else
188 # define EXT2_BLOCKS_PER_GROUP(s) ((s)->s_blocks_per_group)
189 # define EXT2_DESC_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / sizeof (struct ext2_group_desc))
190 # define EXT2_INODES_PER_GROUP(s) ((s)->s_inodes_per_group)
191 #endif
192 
193 /*
194  * Constants relative to the data blocks
195  */
196 #define EXT2_NDIR_BLOCKS 12
197 #define EXT2_IND_BLOCK EXT2_NDIR_BLOCKS
198 #define EXT2_DIND_BLOCK (EXT2_IND_BLOCK + 1)
199 #define EXT2_TIND_BLOCK (EXT2_DIND_BLOCK + 1)
200 #define EXT2_N_BLOCKS (EXT2_TIND_BLOCK + 1)
201 
202 /*
203  * Inode flags
204  */
205 #define EXT2_SECRM_FL 0x00000001 /* Secure deletion */
206 #define EXT2_UNRM_FL 0x00000002 /* Undelete */
207 #define EXT2_COMPR_FL 0x00000004 /* Compress file */
208 #define EXT2_SYNC_FL 0x00000008 /* Synchronous updates */
209 #define EXT2_IMMUTABLE_FL 0x00000010 /* Immutable file */
210 #define EXT2_APPEND_FL 0x00000020 /* writes to file may only append */
211 #define EXT2_NODUMP_FL 0x00000040 /* do not dump file */
212 #define EXT2_NOATIME_FL 0x00000080 /* do not update atime */
213 /* Reserved for compression usage... */
214 #define EXT2_DIRTY_FL 0x00000100
215 #define EXT2_COMPRBLK_FL 0x00000200 /* One or more compressed clusters */
216 #define EXT2_NOCOMPR_FL 0x00000400 /* Access raw compressed data */
217 #define EXT2_ECOMPR_FL 0x00000800 /* Compression error */
218 /* End compression flags --- maybe not all used */
219 #define EXT2_BTREE_FL 0x00001000 /* btree format dir */
220 #define EXT2_INDEX_FL 0x00001000 /* hash-indexed directory */
221 #define EXT2_IMAGIC_FL 0x00002000
222 #define EXT3_JOURNAL_DATA_FL 0x00004000 /* file data should be journaled */
223 #define EXT2_NOTAIL_FL 0x00008000 /* file tail should not be merged */
224 #define EXT2_RESERVED_FL 0x80000000 /* reserved for ext2 lib */
225 
226 #define EXT2_FL_USER_VISIBLE 0x0000DFFF /* User visible flags */
227 #define EXT2_FL_USER_MODIFIABLE 0x000080FF /* User modifiable flags */
228 
229 /*
230  * ioctl commands
231  */
232 #define EXT2_IOC_GETFLAGS _IOR('f', 1, long)
233 #define EXT2_IOC_SETFLAGS _IOW('f', 2, long)
234 #define EXT2_IOC_GETVERSION _IOR('v', 1, long)
235 #define EXT2_IOC_SETVERSION _IOW('v', 2, long)
236 
237 /*
238  * Structure of an inode on the disk
239  */
240 struct ext2_inode {
241  __u16 i_mode; /* File mode */
242  __u16 i_uid; /* Low 16 bits of Owner Uid */
243  __u32 i_size; /* Size in bytes */
244  __u32 i_atime; /* Access time */
245  __u32 i_ctime; /* Creation time */
246  __u32 i_mtime; /* Modification time */
247  __u32 i_dtime; /* Deletion Time */
248  __u16 i_gid; /* Low 16 bits of Group Id */
249  __u16 i_links_count; /* Links count */
250  __u32 i_blocks; /* Blocks count */
251  __u32 i_flags; /* File flags */
252  union {
253  struct {
255  } linux1;
256  struct {
258  } hurd1;
259  struct {
261  } masix1;
262  } osd1; /* OS dependent 1 */
263  __u32 i_block[EXT2_N_BLOCKS];/* Pointers to blocks */
264  __u32 i_generation; /* File version (for NFS) */
265  __u32 i_file_acl; /* File ACL */
266  __u32 i_dir_acl; /* Directory ACL */
267  __u32 i_faddr; /* Fragment address */
268  union {
269  struct {
270  __u8 l_i_frag; /* Fragment number */
271  __u8 l_i_fsize; /* Fragment size */
272  __u16 i_pad1;
273  __u16 l_i_uid_high; /* these 2 fields */
274  __u16 l_i_gid_high; /* were reserved2[0] */
276  } linux2;
277  struct {
278  __u8 h_i_frag; /* Fragment number */
279  __u8 h_i_fsize; /* Fragment size */
284  } hurd2;
285  struct {
286  __u8 m_i_frag; /* Fragment number */
287  __u8 m_i_fsize; /* Fragment size */
288  __u16 m_pad1;
289  __u32 m_i_reserved2[2];
290  } masix2;
291  } osd2; /* OS dependent 2 */
292 };
293 
294 #define i_size_high i_dir_acl
295 
296 #if defined(__KERNEL__) || defined(__linux__)
297 #define i_reserved1 osd1.linux1.l_i_reserved1
298 #define i_frag osd2.linux2.l_i_frag
299 #define i_fsize osd2.linux2.l_i_fsize
300 #define i_uid_low i_uid
301 #define i_gid_low i_gid
302 #define i_uid_high osd2.linux2.l_i_uid_high
303 #define i_gid_high osd2.linux2.l_i_gid_high
304 #define i_reserved2 osd2.linux2.l_i_reserved2
305 
306 #elif defined(__GNU__)
307 
308 #define i_translator osd1.hurd1.h_i_translator
309 #define i_frag osd2.hurd2.h_i_frag;
310 #define i_fsize osd2.hurd2.h_i_fsize;
311 #define i_uid_high osd2.hurd2.h_i_uid_high
312 #define i_gid_high osd2.hurd2.h_i_gid_high
313 #define i_author osd2.hurd2.h_i_author
314 
315 #elif defined(__masix__)
316 
317 #define i_reserved1 osd1.masix1.m_i_reserved1
318 #define i_frag osd2.masix2.m_i_frag
319 #define i_fsize osd2.masix2.m_i_fsize
320 #define i_reserved2 osd2.masix2.m_i_reserved2
321 
322 #endif /* defined(__KERNEL) || defined(__linux__) */
323 
324 /*
325  * File system states
326  */
327 #define EXT2_VALID_FS 0x0001 /* Unmounted cleanly */
328 #define EXT2_ERROR_FS 0x0002 /* Errors detected */
329 
330 /*
331  * Mount flags
332  */
333 #define EXT2_MOUNT_CHECK 0x0001 /* Do mount-time checks */
334 #define EXT2_MOUNT_GRPID 0x0004 /* Create files with directory's group */
335 #define EXT2_MOUNT_DEBUG 0x0008 /* Some debugging messages */
336 #define EXT2_MOUNT_ERRORS_CONT 0x0010 /* Continue on errors */
337 #define EXT2_MOUNT_ERRORS_RO 0x0020 /* Remount fs ro on errors */
338 #define EXT2_MOUNT_ERRORS_PANIC 0x0040 /* Panic on errors */
339 #define EXT2_MOUNT_MINIX_DF 0x0080 /* Mimics the Minix statfs */
340 #define EXT2_MOUNT_NO_UID32 0x0200 /* Disable 32-bit UIDs */
341 
342 #define clear_opt(o, opt) o &= ~EXT2_MOUNT_##opt
343 #define set_opt(o, opt) o |= EXT2_MOUNT_##opt
344 #define test_opt(sb, opt) ((sb)->u.ext2_sb.s_mount_opt & \
345  EXT2_MOUNT_##opt)
346 /*
347  * Maximal mount counts between two filesystem checks
348  */
349 #define EXT2_DFL_MAX_MNT_COUNT 20 /* Allow 20 mounts */
350 #define EXT2_DFL_CHECKINTERVAL 0 /* Don't use interval check */
351 
352 /*
353  * Behaviour when detecting errors
354  */
355 #define EXT2_ERRORS_CONTINUE 1 /* Continue execution */
356 #define EXT2_ERRORS_RO 2 /* Remount fs read-only */
357 #define EXT2_ERRORS_PANIC 3 /* Panic */
358 #define EXT2_ERRORS_DEFAULT EXT2_ERRORS_CONTINUE
359 
360 /*
361  * Structure of the super block
362  */
363 struct ext2_super_block {
364  __u32 s_inodes_count; /* Inodes count */
365  __u32 s_blocks_count; /* Blocks count */
366  __u32 s_r_blocks_count; /* Reserved blocks count */
367  __u32 s_free_blocks_count; /* Free blocks count */
368  __u32 s_free_inodes_count; /* Free inodes count */
369  __u32 s_first_data_block; /* First Data Block */
370  __u32 s_log_block_size; /* Block size */
371  __s32 s_log_frag_size; /* Fragment size */
372  __u32 s_blocks_per_group; /* # Blocks per group */
373  __u32 s_frags_per_group; /* # Fragments per group */
374  __u32 s_inodes_per_group; /* # Inodes per group */
375  __u32 s_mtime; /* Mount time */
376  __u32 s_wtime; /* Write time */
377  __u16 s_mnt_count; /* Mount count */
378  __s16 s_max_mnt_count; /* Maximal mount count */
379  __u16 s_magic; /* Magic signature */
380  __u16 s_state; /* File system state */
381  __u16 s_errors; /* Behaviour when detecting errors */
382  __u16 s_minor_rev_level; /* minor revision level */
383  __u32 s_lastcheck; /* time of last check */
384  __u32 s_checkinterval; /* max. time between checks */
385  __u32 s_creator_os; /* OS */
386  __u32 s_rev_level; /* Revision level */
387  __u16 s_def_resuid; /* Default uid for reserved blocks */
388  __u16 s_def_resgid; /* Default gid for reserved blocks */
389  /*
390  * These fields are for EXT2_DYNAMIC_REV superblocks only.
391  *
392  * Note: the difference between the compatible feature set and
393  * the incompatible feature set is that if there is a bit set
394  * in the incompatible feature set that the kernel doesn't
395  * know about, it should refuse to mount the filesystem.
396  *
397  * e2fsck's requirements are more strict; if it doesn't know
398  * about a feature in either the compatible or incompatible
399  * feature set, it must abort and not try to meddle with
400  * things it doesn't understand...
401  */
402  __u32 s_first_ino; /* First non-reserved inode */
403  __u16 s_inode_size; /* size of inode structure */
404  __u16 s_block_group_nr; /* block group # of this superblock */
405  __u32 s_feature_compat; /* compatible feature set */
406  __u32 s_feature_incompat; /* incompatible feature set */
407  __u32 s_feature_ro_compat; /* readonly-compatible feature set */
408  __u8 s_uuid[16]; /* 128-bit uuid for volume */
409  char s_volume_name[16]; /* volume name */
410  char s_last_mounted[64]; /* directory where last mounted */
411  __u32 s_algorithm_usage_bitmap; /* For compression */
412  /*
413  * Performance hints. Directory preallocation should only
414  * happen if the EXT2_FEATURE_COMPAT_DIR_PREALLOC flag is on.
415  */
416  __u8 s_prealloc_blocks; /* Nr of blocks to try to preallocate*/
417  __u8 s_prealloc_dir_blocks; /* Nr to preallocate for dirs */
419  /*
420  * Journaling support valid if EXT2_FEATURE_COMPAT_HAS_JOURNAL set.
421  */
422  __u8 s_journal_uuid[16]; /* uuid of journal superblock */
423  __u32 s_journal_inum; /* inode number of journal file */
424  __u32 s_journal_dev; /* device number of journal file */
425  __u32 s_last_orphan; /* start of list of inodes to delete */
426 
427  __u32 s_reserved[197]; /* Padding to the end of the block */
428 };
429 
430 #ifdef __KERNEL__
431 #define EXT2_SB(sb) (&((sb)->u.ext2_sb))
432 #else
433 /* Assume that user mode programs are passing in an ext2fs superblock, not
434  * a kernel struct super_block. This will allow us to call the feature-test
435  * macros from user land. */
436 #define EXT2_SB(sb) (sb)
437 #endif
438 
439 /*
440  * Codes for operating systems
441  */
442 #define EXT2_OS_LINUX 0
443 #define EXT2_OS_HURD 1
444 #define EXT2_OS_MASIX 2
445 #define EXT2_OS_FREEBSD 3
446 #define EXT2_OS_LITES 4
447 #define EXT2_OS_WINNT 5
448 
449 /*
450  * Revision levels
451  */
452 #define EXT2_GOOD_OLD_REV 0 /* The good old (original) format */
453 #define EXT2_DYNAMIC_REV 1 /* V2 format w/ dynamic inode sizes */
454 
455 #define EXT2_CURRENT_REV EXT2_GOOD_OLD_REV
456 #define EXT2_MAX_SUPP_REV EXT2_DYNAMIC_REV
457 
458 #define EXT2_GOOD_OLD_INODE_SIZE 128
459 
460 /*
461  * Feature set definitions
462  */
463 
464 #define EXT2_HAS_COMPAT_FEATURE(sb,mask) \
465  ( EXT2_SB(sb)->s_feature_compat & (mask) )
466 #define EXT2_HAS_RO_COMPAT_FEATURE(sb,mask) \
467  ( EXT2_SB(sb)->s_feature_ro_compat & (mask) )
468 #define EXT2_HAS_INCOMPAT_FEATURE(sb,mask) \
469  ( EXT2_SB(sb)->s_feature_incompat & (mask) )
470 
471 #define EXT2_FEATURE_COMPAT_DIR_PREALLOC 0x0001
472 #define EXT2_FEATURE_COMPAT_IMAGIC_INODES 0x0002
473 #define EXT3_FEATURE_COMPAT_HAS_JOURNAL 0x0004
474 #define EXT2_FEATURE_COMPAT_EXT_ATTR 0x0008
475 #define EXT2_FEATURE_COMPAT_RESIZE_INODE 0x0010
476 #define EXT2_FEATURE_COMPAT_DIR_INDEX 0x0020
477 
478 #define EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER 0x0001
479 #define EXT2_FEATURE_RO_COMPAT_LARGE_FILE 0x0002
480 #define EXT2_FEATURE_RO_COMPAT_BTREE_DIR 0x0004
481 
482 #define EXT2_FEATURE_INCOMPAT_COMPRESSION 0x0001
483 #define EXT2_FEATURE_INCOMPAT_FILETYPE 0x0002
484 #define EXT3_FEATURE_INCOMPAT_RECOVER 0x0004 /* Needs recovery */
485 #define EXT3_FEATURE_INCOMPAT_JOURNAL_DEV 0x0008 /* Journal device */
486 
487 #define EXT2_FEATURE_COMPAT_SUPP 0
488 #define EXT2_FEATURE_INCOMPAT_SUPP EXT2_FEATURE_INCOMPAT_FILETYPE
489 #define EXT2_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER| \
490  EXT2_FEATURE_RO_COMPAT_LARGE_FILE| \
491  EXT2_FEATURE_RO_COMPAT_BTREE_DIR)
492 
493 /*
494  * Default values for user and/or group using reserved blocks
495  */
496 #define EXT2_DEF_RESUID 0
497 #define EXT2_DEF_RESGID 0
498 
499 /*
500  * Structure of a directory entry
501  */
502 #define EXT2_NAME_LEN 255
503 
504 struct ext2_dir_entry {
505  __u32 inode; /* Inode number */
506  __u16 rec_len; /* Directory entry length */
507  __u16 name_len; /* Name length */
508  char name[EXT2_NAME_LEN]; /* File name */
509 };
510 
511 /*
512  * The new version of the directory entry. Since EXT2 structures are
513  * stored in intel byte order, and the name_len field could never be
514  * bigger than 255 chars, it's safe to reclaim the extra byte for the
515  * file_type field.
516  */
517 struct ext2_dir_entry_2 {
518  __u32 inode; /* Inode number */
519  __u16 rec_len; /* Directory entry length */
520  __u8 name_len; /* Name length */
521  __u8 file_type;
522  char name[EXT2_NAME_LEN]; /* File name */
523 };
524 
525 /*
526  * Ext2 directory file types. Only the low 3 bits are used. The
527  * other bits are reserved for now.
528  */
529 #define EXT2_FT_UNKNOWN 0
530 #define EXT2_FT_REG_FILE 1
531 #define EXT2_FT_DIR 2
532 #define EXT2_FT_CHRDEV 3
533 #define EXT2_FT_BLKDEV 4
534 #define EXT2_FT_FIFO 5
535 #define EXT2_FT_SOCK 6
536 #define EXT2_FT_SYMLINK 7
537 
538 #define EXT2_FT_MAX 8
539 
540 /*
541  * EXT2_DIR_PAD defines the directory entries boundaries
542  *
543  * NOTE: It must be a multiple of 4
544  */
545 #define EXT2_DIR_PAD 4
546 #define EXT2_DIR_ROUND (EXT2_DIR_PAD - 1)
547 #define EXT2_DIR_REC_LEN(name_len) (((name_len) + 8 + EXT2_DIR_ROUND) & \
548  ~EXT2_DIR_ROUND)
549 
550 #ifdef __KERNEL__
551 /*
552  * Function prototypes
553  */
554 
555 /*
556  * Ok, these declarations are also in <linux/kernel.h> but none of the
557  * ext2 source programs needs to include it so they are duplicated here.
558  */
559 # define NORET_TYPE
560 # define ATTRIB_NORET __attribute__((noreturn))
561 # define NORET_AND noreturn,
562 
563 /* acl.c */
564 extern int ext2_permission (struct inode *, int);
565 
566 /* balloc.c */
567 extern int ext2_bg_has_super(struct super_block *sb, int group);
568 extern unsigned long ext2_bg_num_gdb(struct super_block *sb, int group);
569 extern int ext2_new_block (const struct inode *, unsigned long,
570  __u32 *, __u32 *, int *);
571 extern void ext2_free_blocks (const struct inode *, unsigned long,
572  unsigned long);
573 extern unsigned long ext2_count_free_blocks (struct super_block *);
574 extern void ext2_check_blocks_bitmap (struct super_block *);
575 extern struct ext2_group_desc * ext2_get_group_desc(struct super_block * sb,
576  unsigned int block_group,
577  struct buffer_head ** bh);
578 
579 /* bitmap.c */
580 extern unsigned long ext2_count_free (struct buffer_head *, unsigned);
581 
582 /* dir.c */
583 extern int ext2_check_dir_entry (const char *, struct inode *,
584  struct ext2_dir_entry_2 *, struct buffer_head *,
585  unsigned long);
586 
587 /* file.c */
588 extern int ext2_read (struct inode *, struct file *, char *, int);
589 extern int ext2_write (struct inode *, struct file *, char *, int);
590 
591 /* fsync.c */
592 extern int ext2_sync_file (struct file *, struct dentry *, int);
593 extern int ext2_fsync_inode (struct inode *, int);
594 
595 /* ialloc.c */
596 extern struct inode * ext2_new_inode (const struct inode *, int);
597 extern void ext2_free_inode (struct inode *);
598 extern unsigned long ext2_count_free_inodes (struct super_block *);
599 extern void ext2_check_inodes_bitmap (struct super_block *);
600 
601 /* inode.c */
602 
603 extern struct buffer_head * ext2_getblk (struct inode *, long, int, int *);
604 extern struct buffer_head * ext2_bread (struct inode *, int, int, int *);
605 
606 extern void ext2_read_inode (struct inode *);
607 extern void ext2_write_inode (struct inode *, int);
608 extern void ext2_put_inode (struct inode *);
609 extern void ext2_delete_inode (struct inode *);
610 extern int ext2_sync_inode (struct inode *);
611 extern void ext2_discard_prealloc (struct inode *);
612 
613 /* ioctl.c */
614 extern int ext2_ioctl (struct inode *, struct file *, unsigned int,
615  unsigned long);
616 
617 /* namei.c */
618 extern struct inode_operations ext2_dir_inode_operations;
619 
620 /* super.c */
621 extern void ext2_error (struct super_block *, const char *, const char *, ...)
622  __attribute__ ((format (printf, 3, 4)));
623 extern NORET_TYPE void ext2_panic (struct super_block *, const char *,
624  const char *, ...)
625  __attribute__ ((NORET_AND format (printf, 3, 4)));
626 extern void ext2_warning (struct super_block *, const char *, const char *, ...)
627  __attribute__ ((format (printf, 3, 4)));
629 extern void ext2_put_super (struct super_block *);
630 extern void ext2_write_super (struct super_block *);
631 extern int ext2_remount (struct super_block *, int *, char *);
632 extern struct super_block * ext2_read_super (struct super_block *,void *,int);
633 extern int ext2_statfs (struct super_block *, struct statfs *);
634 
635 /* truncate.c */
636 extern void ext2_truncate (struct inode *);
637 
638 /*
639  * Inodes and files operations
640  */
641 
642 /* dir.c */
643 extern struct file_operations ext2_dir_operations;
644 
645 /* file.c */
646 extern struct inode_operations ext2_file_inode_operations;
647 extern struct file_operations ext2_file_operations;
648 
649 /* symlink.c */
650 extern struct inode_operations ext2_fast_symlink_inode_operations;
651 
652 extern struct address_space_operations ext2_aops;
653 
654 #endif /* __KERNEL__ */
__u32 i_size
Definition: ext2_fs.h:227
__u16 bg_pad
Definition: ext2_fs.h:156
struct ext2_inode::@675::@677 linux1
__u8 h_i_frag
Definition: ext2_fs.h:262
__u32 s_feature_ro_compat
Definition: ext2_fs.h:390
unsigned char __u8
Definition: compat.h:88
__u32 s_journal_inum
Definition: ext2_fs.h:423
__u32 s_log_block_size
Definition: ext2_fs.h:353
__u32 bg_inode_bitmap
Definition: ext2_fs.h:151
__u32 acle_size
Definition: ext2_fs.h:136
struct ext2_inode::@675::@679 masix1
__u16 rec_len
Definition: ext2_fs.h:494
__u32 s_blocks_count
Definition: ext2_fs.h:348
__u16 s_block_group_nr
Definition: ext2_fs.h:387
__u32 i_atime
Definition: ext2_fs.h:228
__u32 aclh_acle_count
Definition: ext2_fs.h:130
superblock * sb
Definition: btrfs.c:4137
struct ext2_inode::@676::@680 linux2
__u32 m_i_reserved1
Definition: ext2_fs.h:244
Definition: fs.h:64
__u32 reserved_zero
Definition: ext2_fs.h:161
__u16 s_padding1
Definition: ext2_fs.h:401
__u32 i_file_acl
Definition: ext2_fs.h:249
__u16 i_uid
Definition: ext2_fs.h:226
__u16 h_i_uid_high
Definition: ext2_fs.h:265
__u16 bg_free_inodes_count
Definition: ext2_fs.h:154
__u32 s_checkinterval
Definition: ext2_fs.h:367
__u16 l_i_gid_high
Definition: ext2_fs.h:258
__u8 l_i_frag
Definition: ext2_fs.h:254
__u8 l_i_fsize
Definition: ext2_fs.h:255
__u8 m_i_fsize
Definition: ext2_fs.h:271
__u16 h_i_mode_high
Definition: ext2_fs.h:264
__s32 s_log_frag_size
Definition: ext2_fs.h:354
GLint GLint GLsizei GLsizei GLsizei GLint GLenum format
Definition: gl.h:1546
Definition: fs.h:78
__u16 rec_len
Definition: ext2_fs.h:507
__u8 h_i_fsize
Definition: ext2_fs.h:263
__u32 s_journal_dev
Definition: ext2_fs.h:424
void ext2_update_dynamic_rev(PEXT2_FILESYS fs)
Definition: Mke2fs.c:510
__u32 acle_next
Definition: ext2_fs.h:141
__u16 s_inode_size
Definition: ext2_fs.h:386
__u32 i_blocks
Definition: ext2_fs.h:234
__u32 m_i_reserved2[2]
Definition: ext2_fs.h:273
__u8 s_prealloc_blocks
Definition: ext2_fs.h:399
Definition: ext2_fs.h:492
__u32 inode
Definition: ext2_fs.h:506
char s_volume_name[16]
Definition: ext2_fs.h:392
__u32 s_first_data_block
Definition: ext2_fs.h:352
__u32 aclh_file_count
Definition: ext2_fs.h:129
Definition: fs.h:117
__u32 bg_block_bitmap
Definition: ext2_fs.h:150
__u32 i_block[EXT2_N_BLOCKS]
Definition: ext2_fs.h:247
struct ext2_inode::@676::@682 masix2
__u16 i_pad1
Definition: ext2_fs.h:256
__u32 s_feature_compat
Definition: ext2_fs.h:388
__u32 l_i_reserved1
Definition: ext2_fs.h:238
__u32 i_dtime
Definition: ext2_fs.h:231
__u32 s_blocks_per_group
Definition: ext2_fs.h:355
__u32 h_i_translator
Definition: ext2_fs.h:241
GLboolean GLuint group
Definition: glext.h:11120
bool ext2_write_inode(PEXT2_FILESYS Ext2Sys, ULONG ino, ULONG offset, PVOID Buffer, ULONG size, PULONG dwReturn)
Definition: Inode.c:541
__u32 i_flags
Definition: ext2_fs.h:235
__u32 l_i_reserved2
Definition: ext2_fs.h:259
__u32 bg_inode_table
Definition: ext2_fs.h:152
__u16 acle_perms
Definition: ext2_fs.h:137
unsigned short __u16
Definition: compat.h:89
__u32 inode
Definition: ext2_fs.h:493
__u16 i_gid
Definition: ext2_fs.h:232
__u16 h_i_gid_high
Definition: ext2_fs.h:266
__u32 s_r_blocks_count
Definition: ext2_fs.h:349
__u32 i_mtime
Definition: ext2_fs.h:230
#define EXT2_N_BLOCKS
Definition: ext2_fs.h:200
__u32 s_last_orphan
Definition: ext2_fs.h:425
__u8 s_uuid[16]
Definition: ext2_fs.h:391
struct ext2_inode::@676::@681 hurd2
__u16 l_i_uid_high
Definition: ext2_fs.h:257
__u32 i_generation
Definition: ext2_fs.h:248
__u16 s_def_resuid
Definition: ext2_fs.h:370
ULONG osd2[3]
Definition: ext2.h:152
unsigned int __u32
Definition: compat.h:90
__u8 s_prealloc_dir_blocks
Definition: ext2_fs.h:400
__u32 s_reserved[204]
Definition: ext2_fs.h:402
__u32 s_lastcheck
Definition: ext2_fs.h:366
__u32 bg_reserved[3]
Definition: ext2_fs.h:157
bool ext2_bg_has_super(PEXT2_SUPER_BLOCK pExt2Sb, int group_block)
Definition: Group.c:30
__u32 s_free_blocks_count
Definition: ext2_fs.h:350
__u8 m_i_frag
Definition: ext2_fs.h:270
__u16 i_mode
Definition: ext2_fs.h:225
__u32 i_dir_acl
Definition: ext2_fs.h:250
__u32 s_first_ino
Definition: ext2_fs.h:385
__u16 m_pad1
Definition: ext2_fs.h:272
__s16 s_max_mnt_count
Definition: ext2_fs.h:361
__u16 bg_used_dirs_count
Definition: ext2_fs.h:155
__u8 file_type
Definition: ext2_fs.h:509
Definition: ext2_fs.h:505
bool ext2_read_inode(PEXT2_FILESYS Ext2Sys, ULONG ino, ULONG offset, PVOID Buffer, ULONG size, PULONG dwReturn)
Definition: Inode.c:494
__u16 s_def_resgid
Definition: ext2_fs.h:371
__u8 name_len
Definition: ext2_fs.h:508
__u32 i_ctime
Definition: ext2_fs.h:229
__u32 aclh_first_acle
Definition: ext2_fs.h:131
__u16 bg_free_blocks_count
Definition: ext2_fs.h:153
int statfs(const char *name, struct statfs *info)
__u32 s_frags_per_group
Definition: ext2_fs.h:356
signed __int32 __s32
Definition: types.h:23
__u32 h_i_author
Definition: ext2_fs.h:267
__u32 i_faddr
Definition: ext2_fs.h:251
__u16 acle_pad1
Definition: ext2_fs.h:140
__u8 s_journal_uuid[16]
Definition: ext2_fs.h:422
__u32 s_rev_level
Definition: ext2_fs.h:369
bool ext2_new_block(PEXT2_FILESYS fs, ULONG goal, PEXT2_BLOCK_BITMAP map, ULONG *ret)
Definition: Memory.c:254
char s_last_mounted[64]
Definition: ext2_fs.h:393
__u32 s_creator_os
Definition: ext2_fs.h:368
Definition: ext2_fs.h:168
__u32 s_inodes_per_group
Definition: ext2_fs.h:357
__u16 acle_type
Definition: ext2_fs.h:138
ULONG osd1
Definition: ext2.h:136
bool ext2_new_inode(PEXT2_FILESYS fs, ULONG dir, int mode, PEXT2_INODE_BITMAP map, ULONG *ret)
Definition: Inode.c:84
Definition: name.c:38
__u16 acle_tag
Definition: ext2_fs.h:139
signed __int16 __s16
Definition: types.h:20
__u16 s_errors
Definition: ext2_fs.h:364
#define const
Definition: zconf.h:230
__u32 hash
Definition: ext2_fs.h:169
__u32 block
Definition: ext2_fs.h:170
__u32 aclh_size
Definition: ext2_fs.h:128
__u32 s_algorithm_usage_bitmap
Definition: ext2_fs.h:394
#define EXT2_NAME_LEN
Definition: ext2_fs.h:502
__u16 i_links_count
Definition: ext2_fs.h:233
__u32 s_free_inodes_count
Definition: ext2_fs.h:351
__u16 name_len
Definition: ext2_fs.h:495
struct ext2_inode::@675::@678 hurd1
__u16 s_mnt_count
Definition: ext2_fs.h:360
__u16 s_minor_rev_level
Definition: ext2_fs.h:365
__u8 indirect_levels
Definition: ext2_fs.h:164
#define printf
Definition: config.h:203
__u32 s_feature_incompat
Definition: ext2_fs.h:389
Definition: ext2_fs.h:134
Definition: fci.c:126
__u32 s_inodes_count
Definition: ext2_fs.h:347