ReactOS 0.4.15-dev-7659-ga55345b
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 (C) 1991, 1992 Linus Torvalds
14 */
15
16#ifndef _LINUX_EXT2_FS_H
17#define _LINUX_EXT2_FS_H
18
19#include <linux/types.h>
20
21/*
22 * The second extended filesystem constants/structures
23 */
24
25/*
26 * Define EXT2FS_DEBUG to produce debug messages
27 */
28#undef EXT2FS_DEBUG
29
30/*
31 * Define EXT2_PREALLOCATE to preallocate data blocks for expanding files
32 */
33#define EXT2_PREALLOCATE
34#define EXT2_DEFAULT_PREALLOC_BLOCKS 8
35
36/*
37 * The second extended file system version
38 */
39#define EXT2FS_DATE "95/08/09"
40#define EXT2FS_VERSION "0.5b"
41
42/*
43 * Debug code
44 */
45#ifdef EXT2FS_DEBUG
46# define ext2_debug(f, a...) { \
47 printk ("EXT2-fs DEBUG (%s, %d): %s:", \
48 __FILE__, __LINE__, __FUNCTION__); \
49 printk (f, ## a); \
50 }
51#else
52//# define ext2_debug(f, a...) /**/
53#endif
54
55/*
56 * Special inode numbers
57 */
58#define EXT2_BAD_INO 1 /* Bad blocks inode */
59#define EXT2_ROOT_INO 2 /* Root inode */
60#define EXT2_ACL_IDX_INO 3 /* ACL inode */
61#define EXT2_ACL_DATA_INO 4 /* ACL inode */
62#define EXT2_BOOT_LOADER_INO 5 /* Boot loader inode */
63#define EXT2_UNDEL_DIR_INO 6 /* Undelete directory inode */
64
65/* First non-reserved inode for old ext2 filesystems */
66#define EXT2_GOOD_OLD_FIRST_INO 11
67
68/*
69 * The second extended file system magic number
70 */
71#define EXT2_SUPER_MAGIC 0xEF53
72
73/*
74 * Maximal count of links to a file
75 */
76#define EXT2_LINK_MAX 32000
77
78/*
79 * Macro-instructions used to manage several block sizes
80 */
81#define EXT2_MIN_BLOCK_SIZE 1024
82#define EXT2_MAX_BLOCK_SIZE 4096
83#define EXT2_MIN_BLOCK_LOG_SIZE 10
84#ifdef __KERNEL__
85# define EXT2_BLOCK_SIZE(s) ((s)->s_blocksize)
86#else
87# define EXT2_BLOCK_SIZE(s) (EXT2_MIN_BLOCK_SIZE << (s)->s_log_block_size)
88#endif
89#define EXT2_ACLE_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / sizeof (struct ext2_acl_entry))
90#define EXT2_ADDR_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / sizeof (__u32))
91#ifdef __KERNEL__
92# define EXT2_BLOCK_SIZE_BITS(s) ((s)->s_blocksize_bits)
93#else
94# define EXT2_BLOCK_SIZE_BITS(s) ((s)->s_log_block_size + 10)
95#endif
96#ifdef __KERNEL__
97#define EXT2_ADDR_PER_BLOCK_BITS(s) ((s)->u.ext2_sb.s_addr_per_block_bits)
98#define EXT2_INODE_SIZE(s) ((s)->u.ext2_sb.s_inode_size)
99#define EXT2_FIRST_INO(s) ((s)->u.ext2_sb.s_first_ino)
100#else
101#define EXT2_INODE_SIZE(s) (((s)->s_rev_level == EXT2_GOOD_OLD_REV) ? \
102 EXT2_GOOD_OLD_INODE_SIZE : \
103 (s)->s_inode_size)
104#define EXT2_FIRST_INO(s) (((s)->s_rev_level == EXT2_GOOD_OLD_REV) ? \
105 EXT2_GOOD_OLD_FIRST_INO : \
106 (s)->s_first_ino)
107#endif
108
109/*
110 * Macro-instructions used to manage fragments
111 */
112#define EXT2_MIN_FRAG_SIZE 1024
113#define EXT2_MAX_FRAG_SIZE 4096
114#define EXT2_MIN_FRAG_LOG_SIZE 10
115#ifdef __KERNEL__
116# define EXT2_FRAG_SIZE(s) ((s)->u.ext2_sb.s_frag_size)
117# define EXT2_FRAGS_PER_BLOCK(s) ((s)->u.ext2_sb.s_frags_per_block)
118#else
119# define EXT2_FRAG_SIZE(s) (EXT2_MIN_FRAG_SIZE << (s)->s_log_frag_size)
120# define EXT2_FRAGS_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / EXT2_FRAG_SIZE(s))
121#endif
122
123/*
124 * ACL structures
125 */
126struct ext2_acl_header /* Header of Access Control Lists */
127{
132};
133
134struct ext2_acl_entry /* Access Control List Entry */
135{
137 __u16 acle_perms; /* Access permissions */
138 __u16 acle_type; /* Type of entry */
139 __u16 acle_tag; /* User or group identity */
141 __u32 acle_next; /* Pointer on next entry for the */
142 /* same inode or on next free entry */
143};
144
145/*
146 * Structure of a blocks group descriptor
147 */
149{
150 __u32 bg_block_bitmap; /* Blocks bitmap block */
151 __u32 bg_inode_bitmap; /* Inodes bitmap block */
152 __u32 bg_inode_table; /* Inodes table block */
153 __u16 bg_free_blocks_count; /* Free blocks count */
154 __u16 bg_free_inodes_count; /* Free inodes count */
155 __u16 bg_used_dirs_count; /* Directories count */
158};
159
160/*
161 * Macro-instructions used to manage group descriptors
162 */
163#ifdef __KERNEL__
164# define EXT2_BLOCKS_PER_GROUP(s) ((s)->u.ext2_sb.s_blocks_per_group)
165# define EXT2_DESC_PER_BLOCK(s) ((s)->u.ext2_sb.s_desc_per_block)
166# define EXT2_INODES_PER_GROUP(s) ((s)->u.ext2_sb.s_inodes_per_group)
167# define EXT2_DESC_PER_BLOCK_BITS(s) ((s)->u.ext2_sb.s_desc_per_block_bits)
168#else
169# define EXT2_BLOCKS_PER_GROUP(s) ((s)->s_blocks_per_group)
170# define EXT2_DESC_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / sizeof (struct ext2_group_desc))
171# define EXT2_INODES_PER_GROUP(s) ((s)->s_inodes_per_group)
172#endif
173
174/*
175 * Constants relative to the data blocks
176 */
177#define EXT2_NDIR_BLOCKS 12
178#define EXT2_IND_BLOCK EXT2_NDIR_BLOCKS
179#define EXT2_DIND_BLOCK (EXT2_IND_BLOCK + 1)
180#define EXT2_TIND_BLOCK (EXT2_DIND_BLOCK + 1)
181#define EXT2_N_BLOCKS (EXT2_TIND_BLOCK + 1)
182
183/*
184 * Inode flags
185 */
186#define EXT2_SECRM_FL 0x00000001 /* Secure deletion */
187#define EXT2_UNRM_FL 0x00000002 /* Undelete */
188#define EXT2_COMPR_FL 0x00000004 /* Compress file */
189#define EXT2_SYNC_FL 0x00000008 /* Synchronous updates */
190#define EXT2_IMMUTABLE_FL 0x00000010 /* Immutable file */
191#define EXT2_APPEND_FL 0x00000020 /* writes to file may only append */
192#define EXT2_NODUMP_FL 0x00000040 /* do not dump file */
193#define EXT2_NOATIME_FL 0x00000080 /* do not update atime */
194/* Reserved for compression usage... */
195#define EXT2_DIRTY_FL 0x00000100
196#define EXT2_COMPRBLK_FL 0x00000200 /* One or more compressed clusters */
197#define EXT2_NOCOMP_FL 0x00000400 /* Don't compress */
198#define EXT2_ECOMPR_FL 0x00000800 /* Compression error */
199/* End compression flags --- maybe not all used */
200#define EXT2_BTREE_FL 0x00001000 /* btree format dir */
201#define EXT2_IMAGIC_FL 0x00002000 /* AFS directory */
202#define EXT2_JOURNAL_DATA_FL 0x00004000 /* file data should be journaled */
203#define EXT2_NOTAIL_FL 0x00008000 /* file tail should not be merged */
204#define EXT2_DIRSYNC_FL 0x00010000 /* dirsync behaviour (directories only) */
205#define EXT2_TOPDIR_FL 0x00020000 /* Top of directory hierarchies*/
206#define EXT2_HUGE_FILE_FL 0x00040000 /* Set to each huge file */
207#define EXT2_EXTENTS_FL 0x00080000 /* Inode uses extents */
208#define EXT2_RESERVED_FL 0x80000000 /* reserved for ext2 lib */
209
210#define EXT2_FL_USER_VISIBLE 0x00001FFF /* User visible flags */
211#define EXT2_FL_USER_MODIFIABLE 0x000000FF /* User modifiable flags */
212
213/*
214 * ioctl commands
215 */
216#define EXT2_IOC_GETFLAGS _IOR('f', 1, long)
217#define EXT2_IOC_SETFLAGS _IOW('f', 2, long)
218#define EXT2_IOC_GETVERSION _IOR('v', 1, long)
219#define EXT2_IOC_SETVERSION _IOW('v', 2, long)
220
221/*
222 * Structure of an inode on the disk
223 */
224struct ext2_inode {
225 __u16 i_mode; /* File mode */
226 __u16 i_uid; /* Low 16 bits of Owner Uid */
227 __u32 i_size; /* Size in bytes */
228 __u32 i_atime; /* Access time */
229 __u32 i_ctime; /* Creation time */
230 __u32 i_mtime; /* Modification time */
231 __u32 i_dtime; /* Deletion Time */
232 __u16 i_gid; /* Low 16 bits of Group Id */
233 __u16 i_links_count; /* Links count */
234 __u32 i_blocks; /* Blocks count */
235 __u32 i_flags; /* File flags */
236 union {
237 struct {
240 struct {
243 struct {
246 } osd1; /* OS dependent 1 */
247 __u32 i_block[EXT2_N_BLOCKS];/* Pointers to blocks */
248 __u32 i_generation; /* File version (for NFS) */
249 __u32 i_file_acl; /* File ACL */
250 __u32 i_dir_acl; /* Directory ACL */
251 __u32 i_faddr; /* Fragment address */
252 union {
253 struct {
254 __u8 l_i_frag; /* Fragment number */
255 __u8 l_i_fsize; /* Fragment size */
257 __u16 l_i_uid_high; /* these 2 fields */
258 __u16 l_i_gid_high; /* were reserved2[0] */
261 struct {
262 __u8 h_i_frag; /* Fragment number */
263 __u8 h_i_fsize; /* Fragment size */
269 struct {
270 __u8 m_i_frag; /* Fragment number */
271 __u8 m_i_fsize; /* Fragment size */
275 } osd2; /* OS dependent 2 */
278};
279
280#if defined(__KERNEL__) || defined(__linux__)
281#define i_reserved1 osd1.linux1.l_i_reserved1
282#define i_frag osd2.linux2.l_i_frag
283#define i_fsize osd2.linux2.l_i_fsize
284#define i_uid_low i_uid
285#define i_gid_low i_gid
286#define i_uid_high osd2.linux2.l_i_uid_high
287#define i_gid_high osd2.linux2.l_i_gid_high
288#define i_reserved2 osd2.linux2.l_i_reserved2
289#endif
290
291#ifdef __hurd__
292#define i_translator osd1.hurd1.h_i_translator
293#define i_frag osd2.hurd2.h_i_frag;
294#define i_fsize osd2.hurd2.h_i_fsize;
295#define i_uid_high osd2.hurd2.h_i_uid_high
296#define i_gid_high osd2.hurd2.h_i_gid_high
297#define i_author osd2.hurd2.h_i_author
298#endif
299
300#ifdef __masix__
301#define i_reserved1 osd1.masix1.m_i_reserved1
302#define i_frag osd2.masix2.m_i_frag
303#define i_fsize osd2.masix2.m_i_fsize
304#define i_reserved2 osd2.masix2.m_i_reserved2
305#endif
306
307/*
308 * File system states
309 */
310#define EXT2_VALID_FS 0x0001 /* Unmounted cleanly */
311#define EXT2_ERROR_FS 0x0002 /* Errors detected */
312
313/*
314 * Mount flags
315 */
316#define EXT2_MOUNT_CHECK 0x0001 /* Do mount-time checks */
317#define EXT2_MOUNT_GRPID 0x0004 /* Create files with directory's group */
318#define EXT2_MOUNT_DEBUG 0x0008 /* Some debugging messages */
319#define EXT2_MOUNT_ERRORS_CONT 0x0010 /* Continue on errors */
320#define EXT2_MOUNT_ERRORS_RO 0x0020 /* Remount fs ro on errors */
321#define EXT2_MOUNT_ERRORS_PANIC 0x0040 /* Panic on errors */
322#define EXT2_MOUNT_MINIX_DF 0x0080 /* Mimics the Minix statfs */
323#define EXT2_MOUNT_NO_UID32 0x0200 /* Disable 32-bit UIDs */
324
325#define clear_opt(o, opt) o &= ~EXT2_MOUNT_##opt
326#define set_opt(o, opt) o |= EXT2_MOUNT_##opt
327#define test_opt(sb, opt) ((sb)->u.ext2_sb.s_mount_opt & \
328 EXT2_MOUNT_##opt)
329/*
330 * Maximal mount counts between two filesystem checks
331 */
332#define EXT2_DFL_MAX_MNT_COUNT 20 /* Allow 20 mounts */
333#define EXT2_DFL_CHECKINTERVAL 0 /* Don't use interval check */
334
335/*
336 * Behaviour when detecting errors
337 */
338#define EXT2_ERRORS_CONTINUE 1 /* Continue execution */
339#define EXT2_ERRORS_RO 2 /* Remount fs read-only */
340#define EXT2_ERRORS_PANIC 3 /* Panic */
341#define EXT2_ERRORS_DEFAULT EXT2_ERRORS_CONTINUE
342
343/*
344 * Structure of the super block
345 */
347 __u32 s_inodes_count; /* Inodes count */
348 __u32 s_blocks_count; /* Blocks count */
349 __u32 s_r_blocks_count; /* Reserved blocks count */
350 __u32 s_free_blocks_count; /* Free blocks count */
351 __u32 s_free_inodes_count; /* Free inodes count */
352 __u32 s_first_data_block; /* First Data Block */
353 __u32 s_log_block_size; /* Block size */
354 __s32 s_log_frag_size; /* Fragment size */
355 __u32 s_blocks_per_group; /* # Blocks per group */
356 __u32 s_frags_per_group; /* # Fragments per group */
357 __u32 s_inodes_per_group; /* # Inodes per group */
358 __u32 s_mtime; /* Mount time */
359 __u32 s_wtime; /* Write time */
360 __u16 s_mnt_count; /* Mount count */
361 __s16 s_max_mnt_count; /* Maximal mount count */
362 __u16 s_magic; /* Magic signature */
363 __u16 s_state; /* File system state */
364 __u16 s_errors; /* Behaviour when detecting errors */
365 __u16 s_minor_rev_level; /* minor revision level */
366 __u32 s_lastcheck; /* time of last check */
367 __u32 s_checkinterval; /* max. time between checks */
369 __u32 s_rev_level; /* Revision level */
370 __u16 s_def_resuid; /* Default uid for reserved blocks */
371 __u16 s_def_resgid; /* Default gid for reserved blocks */
372 /*
373 * These fields are for EXT2_DYNAMIC_REV superblocks only.
374 *
375 * Note: the difference between the compatible feature set and
376 * the incompatible feature set is that if there is a bit set
377 * in the incompatible feature set that the kernel doesn't
378 * know about, it should refuse to mount the filesystem.
379 *
380 * e2fsck's requirements are more strict; if it doesn't know
381 * about a feature in either the compatible or incompatible
382 * feature set, it must abort and not try to meddle with
383 * things it doesn't understand...
384 */
385 __u32 s_first_ino; /* First non-reserved inode */
386 __u16 s_inode_size; /* size of inode structure */
387 __u16 s_block_group_nr; /* block group # of this superblock */
388 __u32 s_feature_compat; /* compatible feature set */
389 __u32 s_feature_incompat; /* incompatible feature set */
390 __u32 s_feature_ro_compat; /* readonly-compatible feature set */
391 __u8 s_uuid[16]; /* 128-bit uuid for volume */
392 char s_volume_name[16]; /* volume name */
393 char s_last_mounted[64]; /* directory where last mounted */
394 __u32 s_algorithm_usage_bitmap; /* For compression */
395 /*
396 * Performance hints. Directory preallocation should only
397 * happen if the EXT2_COMPAT_PREALLOC flag is on.
398 */
399 __u8 s_prealloc_blocks; /* Nr of blocks to try to preallocate*/
400 __u8 s_prealloc_dir_blocks; /* Nr to preallocate for dirs */
402 __u32 s_reserved[204]; /* Padding to the end of the block */
403};
404
405#ifdef __KERNEL__
406#define EXT2_SB(sb) (&((sb)->u.ext2_sb))
407#else
408/* Assume that user mode programs are passing in an ext2fs superblock, not
409 * a kernel struct super_block. This will allow us to call the feature-test
410 * macros from user land. */
411#define EXT2_SB(sb) (sb)
412#endif
413
414/*
415 * Codes for operating systems
416 */
417#define EXT2_OS_LINUX 0
418#define EXT2_OS_HURD 1
419#define EXT2_OS_MASIX 2
420#define EXT2_OS_FREEBSD 3
421#define EXT2_OS_LITES 4
422
423/*
424 * Revision levels
425 */
426#define EXT2_GOOD_OLD_REV 0 /* The good old (original) format */
427#define EXT2_DYNAMIC_REV 1 /* V2 format w/ dynamic inode sizes */
428
429#define EXT2_CURRENT_REV EXT2_GOOD_OLD_REV
430#define EXT2_MAX_SUPP_REV EXT2_DYNAMIC_REV
431
432#define EXT2_GOOD_OLD_INODE_SIZE 128
433
434/*
435 * Feature set definitions
436 */
437
438#define EXT2_HAS_COMPAT_FEATURE(sb,mask) \
439 ( EXT2_SB(sb)->s_es->s_feature_compat & cpu_to_le32(mask) )
440#define EXT2_HAS_RO_COMPAT_FEATURE(sb,mask) \
441 ( EXT2_SB(sb)->s_es->s_feature_ro_compat & cpu_to_le32(mask) )
442#define EXT2_HAS_INCOMPAT_FEATURE(sb,mask) \
443 ( EXT2_SB(sb)->s_es->s_feature_incompat & cpu_to_le32(mask) )
444#define EXT2_SET_COMPAT_FEATURE(sb,mask) \
445 EXT2_SB(sb)->s_es->s_feature_compat |= cpu_to_le32(mask)
446#define EXT2_SET_RO_COMPAT_FEATURE(sb,mask) \
447 EXT2_SB(sb)->s_es->s_feature_ro_compat |= cpu_to_le32(mask)
448#define EXT2_SET_INCOMPAT_FEATURE(sb,mask) \
449 EXT2_SB(sb)->s_es->s_feature_incompat |= cpu_to_le32(mask)
450#define EXT2_CLEAR_COMPAT_FEATURE(sb,mask) \
451 EXT2_SB(sb)->s_es->s_feature_compat &= ~cpu_to_le32(mask)
452#define EXT2_CLEAR_RO_COMPAT_FEATURE(sb,mask) \
453 EXT2_SB(sb)->s_es->s_feature_ro_compat &= ~cpu_to_le32(mask)
454#define EXT2_CLEAR_INCOMPAT_FEATURE(sb,mask) \
455 EXT2_SB(sb)->s_es->s_feature_incompat &= ~cpu_to_le32(mask)
456
457#define EXT2_FEATURE_COMPAT_DIR_PREALLOC 0x0001
458#define EXT2_FEATURE_COMPAT_IMAGIC_INODES 0x0002
459#define EXT3_FEATURE_COMPAT_HAS_JOURNAL 0x0004
460#define EXT2_FEATURE_COMPAT_EXT_ATTR 0x0008
461#define EXT2_FEATURE_COMPAT_RESIZE_INO 0x0010
462#define EXT2_FEATURE_COMPAT_DIR_INDEX 0x0020
463#define EXT2_FEATURE_COMPAT_ANY 0xffffffff
464
465#define EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER 0x0001
466#define EXT2_FEATURE_RO_COMPAT_LARGE_FILE 0x0002
467#define EXT2_FEATURE_RO_COMPAT_BTREE_DIR 0x0004
468#define EXT2_FEATURE_RO_COMPAT_ANY 0xffffffff
469
470#define EXT2_FEATURE_INCOMPAT_COMPRESSION 0x0001
471#define EXT2_FEATURE_INCOMPAT_FILETYPE 0x0002
472
473#define EXT2_FEATURE_COMPAT_SUPP 0
474#define EXT2_FEATURE_INCOMPAT_SUPP EXT2_FEATURE_INCOMPAT_FILETYPE
475#define EXT2_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER| \
476 EXT2_FEATURE_RO_COMPAT_LARGE_FILE| \
477 EXT2_FEATURE_RO_COMPAT_BTREE_DIR)
478#define EXT2_FEATURE_RO_COMPAT_UNSUPPORTED ~EXT2_FEATURE_RO_COMPAT_SUPP
479#define EXT2_FEATURE_INCOMPAT_UNSUPPORTED ~EXT2_FEATURE_INCOMPAT_SUPP
480
481/*
482 * Default values for user and/or group using reserved blocks
483 */
484#define EXT2_DEF_RESUID 0
485#define EXT2_DEF_RESGID 0
486
487/*
488 * Structure of a directory entry
489 */
490#define EXT2_NAME_LEN 255
491
493 __u32 inode; /* Inode number */
494 __u16 rec_len; /* Directory entry length */
495 __u16 name_len; /* Name length */
496 char name[EXT2_NAME_LEN]; /* File name */
497};
498
499/*
500 * The new version of the directory entry. Since EXT2 structures are
501 * stored in intel byte order, and the name_len field could never be
502 * bigger than 255 chars, it's safe to reclaim the extra byte for the
503 * file_type field.
504 */
506 __u32 inode; /* Inode number */
507 __u16 rec_len; /* Directory entry length */
508 __u8 name_len; /* Name length */
510 char name[EXT2_NAME_LEN]; /* File name */
511};
512
513/*
514 * Ext2 directory file types. Only the low 3 bits are used. The
515 * other bits are reserved for now.
516 */
517enum {
528
529/*
530 * EXT2_DIR_PAD defines the directory entries boundaries
531 *
532 * NOTE: It must be a multiple of 4
533 */
534#define EXT2_DIR_PAD 4
535#define EXT2_DIR_ROUND (EXT2_DIR_PAD - 1)
536#define EXT2_DIR_REC_LEN(name_len) (((name_len) + 8 + EXT2_DIR_ROUND) & \
537 ~EXT2_DIR_ROUND)
538
539#ifdef __KERNEL__
540/*
541 * Function prototypes
542 */
543
544/*
545 * Ok, these declarations are also in <linux/kernel.h> but none of the
546 * ext2 source programs needs to include it so they are duplicated here.
547 */
548# define NORET_TYPE
549# define ATTRIB_NORET __attribute__((noreturn))
550# define NORET_AND noreturn,
551
552/* balloc.c */
553extern int ext2_bg_has_super(struct super_block *sb, int group);
554extern unsigned long ext2_bg_num_gdb(struct super_block *sb, int group);
555extern int ext2_new_block (struct inode *, unsigned long,
556 __u32 *, __u32 *, int *);
557extern void ext2_free_blocks (struct inode *, unsigned long,
558 unsigned long);
559extern unsigned long ext2_count_free_blocks (struct super_block *);
560extern void ext2_check_blocks_bitmap (struct super_block *);
561extern struct ext2_group_desc * ext2_get_group_desc(struct super_block * sb,
562 unsigned int block_group,
563 struct buffer_head ** bh);
564
565/* dir.c */
566extern int ext2_add_link (struct dentry *, struct inode *);
567extern ino_t ext2_inode_by_name(struct inode *, struct dentry *);
568extern int ext2_make_empty(struct inode *, struct inode *);
569extern struct ext2_dir_entry_2 * ext2_find_entry (struct inode *,struct dentry *, struct page **);
570extern int ext2_delete_entry (struct ext2_dir_entry_2 *, struct page *);
571extern int ext2_empty_dir (struct inode *);
572extern struct ext2_dir_entry_2 * ext2_dotdot (struct inode *, struct page **);
573extern void ext2_set_link(struct inode *, struct ext2_dir_entry_2 *, struct page *, struct inode *);
574
575/* fsync.c */
576extern int ext2_sync_file (struct file *, struct dentry *, int);
577extern int ext2_fsync_inode (struct inode *, int);
578
579/* ialloc.c */
580extern struct inode * ext2_new_inode (const struct inode *, int);
581extern void ext2_free_inode (struct inode *);
582extern unsigned long ext2_count_free_inodes (struct super_block *);
583extern void ext2_check_inodes_bitmap (struct super_block *);
584extern unsigned long ext2_count_free (struct buffer_head *, unsigned);
585
586/* inode.c */
587extern void ext2_read_inode (struct inode *);
588extern void ext2_write_inode (struct inode *, int);
589extern void ext2_put_inode (struct inode *);
590extern void ext2_delete_inode (struct inode *);
591extern int ext2_sync_inode (struct inode *);
592extern void ext2_discard_prealloc (struct inode *);
593extern void ext2_truncate (struct inode *);
594
595/* ioctl.c */
596extern int ext2_ioctl (struct inode *, struct file *, unsigned int,
597 unsigned long);
598
599/* super.c */
600extern void ext2_error (struct super_block *, const char *, const char *, ...)
601 __attribute__ ((format (printf, 3, 4)));
602extern NORET_TYPE void ext2_panic (struct super_block *, const char *,
603 const char *, ...)
604 __attribute__ ((NORET_AND format (printf, 3, 4)));
605extern void ext2_warning (struct super_block *, const char *, const char *, ...)
606 __attribute__ ((format (printf, 3, 4)));
608extern void ext2_put_super (struct super_block *);
609extern void ext2_write_super (struct super_block *);
610extern int ext2_remount (struct super_block *, int *, char *);
611extern struct super_block * ext2_read_super (struct super_block *,void *,int);
612#ifndef __REACTOS__
613extern int ext2_statfs (struct super_block *, struct statfs *);
614#endif
615
616/*
617 * Inodes and files operations
618 */
619
620/* dir.c */
621extern struct file_operations ext2_dir_operations;
622
623/* file.c */
624extern struct inode_operations ext2_file_inode_operations;
625extern struct file_operations ext2_file_operations;
626
627/* inode.c */
628extern struct address_space_operations ext2_aops;
629
630/* namei.c */
631extern struct inode_operations ext2_dir_inode_operations;
632
633/* symlink.c */
634extern struct inode_operations ext2_fast_symlink_inode_operations;
635
636#endif /* __KERNEL__ */
637
638#endif /* _LINUX_EXT2_FS_H */
bool ext2_bg_has_super(PEXT2_SUPER_BLOCK pExt2Sb, int group_block)
Definition: Group.c:30
bool ext2_read_inode(PEXT2_FILESYS Ext2Sys, ULONG ino, ULONG offset, PVOID Buffer, ULONG size, PULONG dwReturn)
Definition: Inode.c:494
bool ext2_new_inode(PEXT2_FILESYS fs, ULONG dir, int mode, PEXT2_INODE_BITMAP map, ULONG *ret)
Definition: Inode.c:84
bool ext2_write_inode(PEXT2_FILESYS Ext2Sys, ULONG ino, ULONG offset, PVOID Buffer, ULONG size, PULONG dwReturn)
Definition: Inode.c:541
bool ext2_new_block(PEXT2_FILESYS fs, ULONG goal, PEXT2_BLOCK_BITMAP map, ULONG *ret)
Definition: Memory.c:254
void ext2_update_dynamic_rev(PEXT2_FILESYS fs)
Definition: Mke2fs.c:510
u16 __u16
Definition: btrfs.h:18
u8 __u8
Definition: btrfs.h:17
u32 __u32
Definition: btrfs.h:19
superblock * sb
Definition: btrfs.c:4261
@ EXT2_FT_REG_FILE
Definition: ext2_fs.h:519
@ EXT2_FT_MAX
Definition: ext2_fs.h:526
@ EXT2_FT_FIFO
Definition: ext2_fs.h:523
@ EXT2_FT_BLKDEV
Definition: ext2_fs.h:522
@ EXT2_FT_DIR
Definition: ext2_fs.h:520
@ EXT2_FT_SYMLINK
Definition: ext2_fs.h:525
@ EXT2_FT_SOCK
Definition: ext2_fs.h:524
@ EXT2_FT_UNKNOWN
Definition: ext2_fs.h:518
@ EXT2_FT_CHRDEV
Definition: ext2_fs.h:521
#define __le16
Definition: types.h:43
signed __int16 __s16
Definition: types.h:20
signed __int32 __s32
Definition: types.h:23
__kernel_ino_t ino_t
Definition: linux.h:198
#define printf
Definition: freeldr.h:94
GLint GLint GLsizei GLsizei GLsizei GLint GLenum format
Definition: gl.h:1546
GLboolean GLuint group
Definition: glext.h:11120
int statfs(const char *name, struct statfs *info)
#define EXT2_NAME_LEN
Definition: ext2_fs.h:502
#define EXT2_N_BLOCKS
Definition: ext2_fs.h:200
Definition: fs.h:117
Definition: ext2_fs.h:135
__u16 acle_pad1
Definition: ext2_fs.h:140
__u32 acle_next
Definition: ext2_fs.h:141
__u16 acle_type
Definition: ext2_fs.h:138
__u16 acle_perms
Definition: ext2_fs.h:137
__u16 acle_tag
Definition: ext2_fs.h:139
__u32 acle_size
Definition: ext2_fs.h:136
__u32 aclh_acle_count
Definition: ext2_fs.h:130
__u32 aclh_size
Definition: ext2_fs.h:128
__u32 aclh_first_acle
Definition: ext2_fs.h:131
__u32 aclh_file_count
Definition: ext2_fs.h:129
Definition: ext2_fs.h:505
__u8 file_type
Definition: ext2_fs.h:509
__u8 name_len
Definition: ext2_fs.h:508
__u32 inode
Definition: ext2_fs.h:506
__u16 rec_len
Definition: ext2_fs.h:507
Definition: ext2_fs.h:492
__u32 inode
Definition: ext2_fs.h:493
__u16 name_len
Definition: ext2_fs.h:495
__u16 rec_len
Definition: ext2_fs.h:494
__u32 bg_block_bitmap
Definition: ext2_fs.h:150
__u32 bg_inode_bitmap
Definition: ext2_fs.h:151
__u32 bg_reserved[3]
Definition: ext2_fs.h:157
__u16 bg_used_dirs_count
Definition: ext2_fs.h:155
__u16 bg_free_blocks_count
Definition: ext2_fs.h:153
__u16 bg_pad
Definition: ext2_fs.h:156
__u32 bg_inode_table
Definition: ext2_fs.h:152
__u16 bg_free_inodes_count
Definition: ext2_fs.h:154
__u16 i_uid
Definition: ext2_fs.h:226
ULONG osd2[3]
Definition: ext2.h:152
__u8 h_i_fsize
Definition: ext2_fs.h:263
struct ext2_inode::@693::@696 hurd1
__u16 h_i_mode_high
Definition: ext2_fs.h:264
__u32 i_generation
Definition: ext2_fs.h:248
__u8 l_i_fsize
Definition: ext2_fs.h:255
__u16 l_i_uid_high
Definition: ext2_fs.h:257
struct ext2_inode::@694::@700 masix2
__u16 h_i_gid_high
Definition: ext2_fs.h:266
__u16 i_mode
Definition: ext2_fs.h:225
__le16 i_extra_isize
Definition: ext2_fs.h:276
__u16 i_pad1
Definition: ext2_fs.h:256
__u16 h_i_uid_high
Definition: ext2_fs.h:265
__u32 h_i_translator
Definition: ext2_fs.h:241
__u32 i_dir_acl
Definition: ext2_fs.h:250
__u8 l_i_frag
Definition: ext2_fs.h:254
__u32 i_blocks
Definition: ext2_fs.h:234
__u16 i_gid
Definition: ext2_fs.h:232
__u32 i_faddr
Definition: ext2_fs.h:251
__u32 l_i_reserved2
Definition: ext2_fs.h:259
struct ext2_inode::@693::@695 linux1
__u32 i_dtime
Definition: ext2_fs.h:231
__u32 m_i_reserved1
Definition: ext2_fs.h:244
__u8 m_i_fsize
Definition: ext2_fs.h:271
__u16 m_pad1
Definition: ext2_fs.h:272
__u32 i_size
Definition: ext2_fs.h:227
__u32 i_ctime
Definition: ext2_fs.h:229
__le16 i_pad1
Definition: ext2_fs.h:277
__u32 i_atime
Definition: ext2_fs.h:228
__u32 i_file_acl
Definition: ext2_fs.h:249
__u32 i_mtime
Definition: ext2_fs.h:230
__u32 h_i_author
Definition: ext2_fs.h:267
__u32 i_block[EXT2_N_BLOCKS]
Definition: ext2_fs.h:247
__u16 l_i_gid_high
Definition: ext2_fs.h:258
struct ext2_inode::@694::@699 hurd2
__u8 h_i_frag
Definition: ext2_fs.h:262
ULONG osd1
Definition: ext2.h:136
struct ext2_inode::@694::@698 linux2
__u32 i_flags
Definition: ext2_fs.h:235
__u32 m_i_reserved2[2]
Definition: ext2_fs.h:273
__u8 m_i_frag
Definition: ext2_fs.h:270
struct ext2_inode::@693::@697 masix1
__u32 l_i_reserved1
Definition: ext2_fs.h:238
__u16 i_links_count
Definition: ext2_fs.h:233
__u16 s_mnt_count
Definition: ext2_fs.h:360
__u32 s_blocks_count
Definition: ext2_fs.h:348
__u16 s_padding1
Definition: ext2_fs.h:401
char s_volume_name[16]
Definition: ext2_fs.h:392
__u8 s_prealloc_blocks
Definition: ext2_fs.h:399
__u32 s_first_ino
Definition: ext2_fs.h:385
__u8 s_prealloc_dir_blocks
Definition: ext2_fs.h:400
__u32 s_log_block_size
Definition: ext2_fs.h:353
__u32 s_rev_level
Definition: ext2_fs.h:369
__u16 s_def_resgid
Definition: ext2_fs.h:371
__u16 s_inode_size
Definition: ext2_fs.h:386
__u32 s_algorithm_usage_bitmap
Definition: ext2_fs.h:394
__u16 s_errors
Definition: ext2_fs.h:364
__u32 s_free_inodes_count
Definition: ext2_fs.h:351
__u16 s_minor_rev_level
Definition: ext2_fs.h:365
__u32 s_inodes_count
Definition: ext2_fs.h:347
__u32 s_first_data_block
Definition: ext2_fs.h:352
__u32 s_reserved[204]
Definition: ext2_fs.h:402
__u32 s_feature_ro_compat
Definition: ext2_fs.h:390
__u32 s_checkinterval
Definition: ext2_fs.h:367
__u16 s_block_group_nr
Definition: ext2_fs.h:387
__u32 s_feature_compat
Definition: ext2_fs.h:388
__u32 s_r_blocks_count
Definition: ext2_fs.h:349
__s32 s_log_frag_size
Definition: ext2_fs.h:354
__u32 s_lastcheck
Definition: ext2_fs.h:366
__u32 s_inodes_per_group
Definition: ext2_fs.h:357
__u32 s_creator_os
Definition: ext2_fs.h:368
__u32 s_feature_incompat
Definition: ext2_fs.h:389
char s_last_mounted[64]
Definition: ext2_fs.h:393
__u32 s_free_blocks_count
Definition: ext2_fs.h:350
__u32 s_blocks_per_group
Definition: ext2_fs.h:355
__u32 s_frags_per_group
Definition: ext2_fs.h:356
__s16 s_max_mnt_count
Definition: ext2_fs.h:361
__u8 s_uuid[16]
Definition: ext2_fs.h:391
__u16 s_def_resuid
Definition: ext2_fs.h:370
Definition: fci.c:127
Definition: fs.h:78
Definition: name.c:39
Definition: module.h:576
Definition: fs.h:64
#define const
Definition: zconf.h:233