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[thirdparty/e2fsprogs.git] / lib / ext2fs / ext2fs.h
CommitLineData
3839e657
TT		 1/*
2 * ext2fs.h --- ext2fs
3 *
19c78dc0
TT		 4 * Copyright (C) 1993, 1994, 1995, 1996 Theodore Ts'o.
5 *
6 * %Begin-Header%
7 * This file may be redistributed under the terms of the GNU Public
8 * License.
9 * %End-Header%
3839e657
TT		 10 */
11
19c78dc0
TT		 12/*
13 * Non-GNU C compilers won't necessarily understand inline
14 */
15#ifndef __GNUC__
16#define NO_INLINE_FUNCS
17#endif
18
3839e657
TT		 19/*
20 * Where the master copy of the superblock is located, and how big
21 * superblocks are supposed to be. We define SUPERBLOCK_SIZE because
22 * the size of the superblock structure is not necessarily trustworthy
23 * (some versions have the padding set up so that the superblock is
24 * 1032 bytes long).
25 */
26#define SUPERBLOCK_OFFSET 1024
27#define SUPERBLOCK_SIZE 1024
28
f3db3566
TT		 29/*
30 * The last ext2fs revision level that this version of the library is
31 * able to support.
32 */
33#define EXT2_LIB_CURRENT_REV 0
34
1e3472c5 35#include <sys/types.h>
50e1e10f
TT		 36#include <linux/types.h>
37
38typedef __u32 blk_t;
3839e657
TT		 39typedef unsigned int dgrp_t;
40
41#include "et/com_err.h"
42#include "ext2fs/io.h"
43#include "ext2fs/ext2_err.h"
44
f3db3566
TT		 45typedef struct struct_ext2_filsys *ext2_filsys;
46
1e3472c5
TT		 47struct ext2fs_struct_generic_bitmap {
48 int magic;
49 ext2_filsys fs;
50 __u32 start, end;
51 __u32 real_end;
52 char * description;
53 char * bitmap;
54 errcode_t base_error_code;
55 __u32 reserved[7];
f3db3566
TT		 56};
57
1e3472c5
TT		 58#define EXT2FS_MARK_ERROR 0
59#define EXT2FS_UNMARK_ERROR 1
60#define EXT2FS_TEST_ERROR 2
f3db3566 61
1e3472c5 62typedef struct ext2fs_struct_generic_bitmap *ext2fs_generic_bitmap;
1e3472c5 63typedef struct ext2fs_struct_generic_bitmap *ext2fs_inode_bitmap;
1e3472c5 64typedef struct ext2fs_struct_generic_bitmap *ext2fs_block_bitmap;
f3db3566 65
7f88b043
TT		 66#ifdef EXT2_DYNAMIC_REV
67#define EXT2_FIRST_INODE(s) EXT2_FIRST_INO(s)
68#else
69#define EXT2_FIRST_INODE(s) EXT2_FIRST_INO
70#define EXT2_INODE_SIZE(s) sizeof(struct ext2_inode)
71#endif
72
19c78dc0
TT		 73/*
74 * badblocks list definitions
75 */
76
77typedef struct ext2_struct_badblocks_list *ext2_badblocks_list;
78typedef struct ext2_struct_badblocks_iterate *ext2_badblocks_iterate;
79
80/* old */
81typedef struct ext2_struct_badblocks_list *badblocks_list;
82typedef struct ext2_struct_badblocks_iterate *badblocks_iterate;
83
84#define BADBLOCKS_FLAG_DIRTY 1
85
86/*
87 * ext2_dblist structure and abstractions (see dblist.c)
88 */
89struct ext2_db_entry {
90 ino_t ino;
91 blk_t blk;
92 int blockcnt;
93};
94
95typedef struct ext2_struct_dblist *ext2_dblist;
96
97#define DBLIST_ABORT 1
98
3839e657
TT		 99/*
100 * Flags for the ext2_filsys structure
101 */
102
19c78dc0
TT		 103#define EXT2_FLAG_RW 0x01
104#define EXT2_FLAG_CHANGED 0x02
105#define EXT2_FLAG_DIRTY 0x04
106#define EXT2_FLAG_VALID 0x08
107#define EXT2_FLAG_IB_DIRTY 0x10
108#define EXT2_FLAG_BB_DIRTY 0x20
5c576477
TT		 109#define EXT2_FLAG_SWAP_BYTES 0x40
110#define EXT2_FLAG_SWAP_BYTES_READ 0x80
111#define EXT2_FLAG_SWAP_BYTES_WRITE 0x100
112#define EXT2_FLAG_MASTER_SB_ONLY 0x200
19c78dc0 113#define EXT2_FLAG_FORCE 0x400
3839e657 114
7f88b043
TT		 115/*
116 * Special flag in the ext2 inode i_flag field that means that this is
117 * a new inode. (So that ext2_write_inode() can clear extra fields.)
118 */
119#define EXT2_NEW_INODE_FL 0x80000000
120
3839e657 121struct struct_ext2_filsys {
f3db3566 122 int magic;
3839e657
TT		 123 io_channel io;
124 int flags;
125 char * device_name;
126 struct ext2_super_block * super;
127 int blocksize;
128 int fragsize;
129 unsigned long group_desc_count;
130 unsigned long desc_blocks;
131 struct ext2_group_desc * group_desc;
132 int inode_blocks_per_group;
f3db3566
TT		 133 ext2fs_inode_bitmap inode_map;
134 ext2fs_block_bitmap block_map;
3839e657
TT		 135 errcode_t (*get_blocks)(ext2_filsys fs, ino_t ino, blk_t *blocks);
136 errcode_t (*check_directory)(ext2_filsys fs, ino_t ino);
137 errcode_t (*write_bitmaps)(ext2_filsys fs);
1e3472c5
TT		 138 errcode_t (*read_inode)(ext2_filsys fs, ino_t ino,
139 struct ext2_inode *inode);
140 errcode_t (*write_inode)(ext2_filsys fs, ino_t ino,
141 struct ext2_inode *inode);
19c78dc0
TT		 142 badblocks_list badblocks;
143 ext2_dblist dblist;
a29f4d30 144 __u32 stride; /* for mke2fs */
19c78dc0
TT		 145 /*
146 * Reserved for future expansion
147 */
a29f4d30 148 __u32 reserved[11];
3839e657
TT		 149
150 /*
a29f4d30 151 * Reserved for the use of the calling application.
3839e657 152 */
a29f4d30
TT		 153 void * private;
154
155 /*
156 * Inode cache
157 */
158 struct ext2_inode_cache *icache;
3839e657
TT		 159};
160
f3db3566
TT		 161#include "ext2fs/bitops.h"
162
3839e657
TT		 163/*
164 * Return flags for the block iterator functions
165 */
166#define BLOCK_CHANGED 1
167#define BLOCK_ABORT 2
168#define BLOCK_ERROR 4
169
170/*
171 * Block interate flags
50e1e10f
TT		 172 *
173 * BLOCK_FLAG_APPEND, or BLOCK_FLAG_HOLE, indicates that the interator
174 * function should be called on blocks where the block number is zero.
175 * This is used by ext2fs_expand_dir() to be able to add a new block
176 * to an inode. It can also be used for programs that want to be able
177 * to deal with files that contain "holes".
178 *
179 * BLOCK_FLAG_TRAVERSE indicates that the iterator function for the
180 * indirect, doubly indirect, etc. blocks should be called after all
181 * of the blocks containined in the indirect blocks are processed.
182 * This is useful if you are going to be deallocating blocks from an
183 * inode.
1e3472c5
TT		 184 *
185 * BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be
186 * called for data blocks only.
3839e657
TT		 187 */
188#define BLOCK_FLAG_APPEND 1
50e1e10f 189#define BLOCK_FLAG_HOLE 1
3839e657 190#define BLOCK_FLAG_DEPTH_TRAVERSE 2
1e3472c5
TT		 191#define BLOCK_FLAG_DATA_ONLY 4
192
193/*
194 * Magic "block count" return values for the block iterator function.
195 */
196#define BLOCK_COUNT_IND (-1)
197#define BLOCK_COUNT_DIND (-2)
198#define BLOCK_COUNT_TIND (-3)
199#define BLOCK_COUNT_TRANSLATOR (-4)
3839e657 200
1e1da29f
TT		 201/*
202 * Flags for ext2fs_move_blocks
203 */
204#define EXT2_BMOVE_GET_DBLIST 0x0001
36f21439 205#define EXT2_BMOVE_DEBUG 0x0002
1e1da29f 206
3839e657
TT		 207/*
208 * Return flags for the directory iterator functions
209 */
210#define DIRENT_CHANGED 1
211#define DIRENT_ABORT 2
212#define DIRENT_ERROR 3
213
214/*
215 * Directory iterator flags
216 */
217
218#define DIRENT_FLAG_INCLUDE_EMPTY 1
219
19c78dc0
TT		 220
221#define DIRENT_DOT_FILE 1
222#define DIRENT_DOT_DOT_FILE 2
223#define DIRENT_OTHER_FILE 3
224
3839e657
TT		 225/*
226 * Inode scan definitions
227 */
f3db3566
TT		 228typedef struct ext2_struct_inode_scan *ext2_inode_scan;
229
19c78dc0
TT		 230/*
231 * ext2fs_scan flags
232 */
233#define EXT2_SF_CHK_BADBLOCKS 0x0001
234#define EXT2_SF_BAD_INODE_BLK 0x0002
235#define EXT2_SF_BAD_EXTRA_BYTES 0x0004
236#define EXT2_SF_SKIP_MISSING_ITABLE 0x0008
3839e657 237
50e1e10f
TT		 238/*
239 * ext2fs_check_if_mounted flags
240 */
241#define EXT2_MF_MOUNTED 1
242#define EXT2_MF_ISROOT 2
19c78dc0 243#define EXT2_MF_READONLY 4
50e1e10f
TT		 244
245/*
246 * Ext2/linux mode flags. We define them here so that we don't need
247 * to depend on the OS's sys/stat.h, since we may be compiling on a
248 * non-Linux system.
249 */
250#define LINUX_S_IFMT 00170000
251#define LINUX_S_IFSOCK 0140000
252#define LINUX_S_IFLNK 0120000
253#define LINUX_S_IFREG 0100000
254#define LINUX_S_IFBLK 0060000
255#define LINUX_S_IFDIR 0040000
256#define LINUX_S_IFCHR 0020000
257#define LINUX_S_IFIFO 0010000
258#define LINUX_S_ISUID 0004000
259#define LINUX_S_ISGID 0002000
260#define LINUX_S_ISVTX 0001000
261
1e3472c5
TT		 262#define LINUX_S_IRWXU 00700
263#define LINUX_S_IRUSR 00400
264#define LINUX_S_IWUSR 00200
265#define LINUX_S_IXUSR 00100
266
267#define LINUX_S_IRWXG 00070
268#define LINUX_S_IRGRP 00040
269#define LINUX_S_IWGRP 00020
270#define LINUX_S_IXGRP 00010
271
272#define LINUX_S_IRWXO 00007
273#define LINUX_S_IROTH 00004
274#define LINUX_S_IWOTH 00002
275#define LINUX_S_IXOTH 00001
276
50e1e10f
TT		 277#define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK)
278#define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG)
279#define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR)
280#define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR)
281#define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK)
282#define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO)
283#define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK)
284
19c78dc0
TT		 285/*
286 * ext2_icount_t abstraction
287 */
288#define EXT2_ICOUNT_OPT_INCREMENT 0x01
289
290typedef struct ext2_icount *ext2_icount_t;
291
f3db3566
TT		 292/*
293 * For checking structure magic numbers...
294 */
3839e657 295
f3db3566
TT		 296#define EXT2_CHECK_MAGIC(struct, code) \
297 if ((struct)->magic != (code)) return (code)
1e3472c5
TT		 298
299
300/*
301 * The ext2fs library private definition of the ext2 superblock, so we
302 * don't have to depend on the kernel's definition of the superblock,
303 * which might not have the latest features.
304 */
305struct ext2fs_sb {
306 __u32 s_inodes_count; /* Inodes count */
307 __u32 s_blocks_count; /* Blocks count */
308 __u32 s_r_blocks_count; /* Reserved blocks count */
309 __u32 s_free_blocks_count; /* Free blocks count */
310 __u32 s_free_inodes_count; /* Free inodes count */
311 __u32 s_first_data_block; /* First Data Block */
312 __u32 s_log_block_size; /* Block size */
313 __s32 s_log_frag_size; /* Fragment size */
314 __u32 s_blocks_per_group; /* # Blocks per group */
315 __u32 s_frags_per_group; /* # Fragments per group */
316 __u32 s_inodes_per_group; /* # Inodes per group */
317 __u32 s_mtime; /* Mount time */
318 __u32 s_wtime; /* Write time */
319 __u16 s_mnt_count; /* Mount count */
320 __s16 s_max_mnt_count; /* Maximal mount count */
321 __u16 s_magic; /* Magic signature */
322 __u16 s_state; /* File system state */
323 __u16 s_errors; /* Behaviour when detecting errors */
324 __u16 s_minor_rev_level; /* minor revision level */
325 __u32 s_lastcheck; /* time of last check */
326 __u32 s_checkinterval; /* max. time between checks */
327 __u32 s_creator_os; /* OS */
328 __u32 s_rev_level; /* Revision level */
329 __u16 s_def_resuid; /* Default uid for reserved blocks */
330 __u16 s_def_resgid; /* Default gid for reserved blocks */
331 /*
332 * These fields are for EXT2_DYNAMIC_REV superblocks only.
333 *
334 * Note: the difference between the compatible feature set and
335 * the incompatible feature set is that if there is a bit set
336 * in the incompatible feature set that the kernel doesn't
337 * know about, it should refuse to mount the filesystem.
338 *
339 * e2fsck's requirements are more strict; if it doesn't know
340 * about a feature in either the compatible or incompatible
341 * feature set, it must abort and not try to meddle with
342 * things it doesn't understand...
343 */
344 __u32 s_first_ino; /* First non-reserved inode */
345 __u16 s_inode_size; /* size of inode structure */
346 __u16 s_block_group_nr; /* block group # of this superblock */
347 __u32 s_feature_compat; /* compatible feature set */
348 __u32 s_feature_incompat; /* incompatible feature set */
349 __u32 s_feature_ro_compat; /* readonly-compatible feature set */
350 __u8 s_uuid[16]; /* 128-bit uuid for volume */
351 char s_volume_name[16]; /* volume name */
352 char s_last_mounted[64]; /* directory where last mounted */
353 __u32 s_reserved[206]; /* Padding to the end of the block */
354};
521e3685
TT		 355
356/*
357 * Feature set definitions (that might not be in ext2_fs.h
358 * (was EXT2_COMPAT_SPARSE_SUPER)
359 */
360#ifndef EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER
361#define EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER 0x0001
362#endif
363
364#define EXT2_LIB_FEATURE_COMPAT_SUPP 0
365#define EXT2_LIB_FEATURE_INCOMPAT_SUPP 0
366#define EXT2_LIB_FEATURE_RO_COMPAT_SUPP EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER
367
3839e657
TT		 368/*
369 * function prototypes
370 */
371
372/* alloc.c */
373extern errcode_t ext2fs_new_inode(ext2_filsys fs, ino_t dir, int mode,
f3db3566 374 ext2fs_inode_bitmap map, ino_t *ret);
3839e657 375extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal,
f3db3566 376 ext2fs_block_bitmap map, blk_t *ret);
3839e657 377extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start,
f3db3566
TT		 378 blk_t finish, int num,
379 ext2fs_block_bitmap map,
3839e657
TT		 380 blk_t *ret);
381
1e1da29f
TT		 382/* alloc_tables.c */
383extern errcode_t ext2fs_allocate_tables(ext2_filsys fs);
384extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, int group,
385 ext2fs_block_bitmap bmap);
19c78dc0 386
3839e657 387/* badblocks.c */
19c78dc0
TT		 388extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret,
389 int size);
19c78dc0
TT		 390extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb,
391 blk_t blk);
392extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb,
393 blk_t blk);
394extern errcode_t
395 ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb,
396 ext2_badblocks_iterate *ret);
397extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter,
398 blk_t *blk);
399extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter);
a29f4d30
TT		 400extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src,
401 ext2_badblocks_list *dest);
19c78dc0
TT		 402
403/* bb_compat */
3839e657 404extern errcode_t badblocks_list_create(badblocks_list *ret, int size);
3839e657
TT		 405extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk);
406extern int badblocks_list_test(badblocks_list bb, blk_t blk);
407extern errcode_t badblocks_list_iterate_begin(badblocks_list bb,
408 badblocks_iterate *ret);
409extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk);
410extern void badblocks_list_iterate_end(badblocks_iterate iter);
a29f4d30 411extern void badblocks_list_free(badblocks_list bb);
3839e657
TT		 412
413/* bb_inode.c */
414extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs,
19c78dc0 415 ext2_badblocks_list bb_list);
3839e657
TT		 416
417/* bitmaps.c */
418extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs);
419extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs);
420extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs);
421extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs);
1e3472c5
TT		 422extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start,
423 __u32 end,
424 __u32 real_end,
425 const char *descr,
426 ext2fs_generic_bitmap *ret);
50e1e10f
TT		 427extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs,
428 const char *descr,
429 ext2fs_block_bitmap *ret);
430extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs,
431 const char *descr,
432 ext2fs_inode_bitmap *ret);
433extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap,
434 ino_t end, ino_t *oend);
435extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap,
436 blk_t end, blk_t *oend);
437extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap);
438extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap);
3839e657
TT		 439extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs);
440extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs);
441
442/* block.c */
443extern errcode_t ext2fs_block_iterate(ext2_filsys fs,
444 ino_t ino,
445 int flags,
446 char *block_buf,
447 int (*func)(ext2_filsys fs,
448 blk_t *blocknr,
449 int blockcnt,
450 void *private),
451 void *private);
452
19c78dc0
TT		 453errcode_t ext2fs_block_iterate2(ext2_filsys fs,
454 ino_t ino,
455 int flags,
456 char *block_buf,
457 int (*func)(ext2_filsys fs,
458 blk_t *blocknr,
459 int blockcnt,
460 blk_t ref_blk,
461 int ref_offset,
462 void *private),
463 void *private);
464
1e1da29f
TT		 465/* bmove.c */
466extern errcode_t ext2fs_move_blocks(ext2_filsys fs,
467 ext2fs_block_bitmap reserve,
9941fb73 468 ext2fs_block_bitmap alloc_map,
1e1da29f
TT		 469 int flags);
470
f3db3566
TT		 471/* check_desc.c */
472extern errcode_t ext2fs_check_desc(ext2_filsys fs);
473
3839e657
TT		 474/* closefs.c */
475extern errcode_t ext2fs_close(ext2_filsys fs);
476extern errcode_t ext2fs_flush(ext2_filsys fs);
521e3685 477extern int ext2fs_bg_has_super(ext2_filsys fs, int group_block);
3839e657 478
50e1e10f
TT		 479/* cmp_bitmaps.c */
480extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1,
481 ext2fs_block_bitmap bm2);
482extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1,
483 ext2fs_inode_bitmap bm2);
484
19c78dc0
TT		 485/* dblist.c */
486
a29f4d30
TT		 487extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ino_t *ret_num_dirs);
488extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist);
489extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ino_t ino,
490 blk_t blk, int blockcnt);
491extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist,
492 int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info,
493 void *private),
494 void *private);
495extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ino_t ino,
496 blk_t blk, int blockcnt);
497extern errcode_t ext2fs_copy_dblist(ext2_dblist src,
498 ext2_dblist *dest);
549860c5 499extern int ext2fs_dblist_count(ext2_dblist dblist);
19c78dc0
TT		 500
501/* dblist_dir.c */
502extern errcode_t
503 ext2fs_dblist_dir_iterate(ext2_dblist dblist,
504 int flags,
505 char *block_buf,
506 int (*func)(ino_t dir,
507 int entry,
508 struct ext2_dir_entry *dirent,
509 int offset,
510 int blocksize,
511 char *buf,
512 void *private),
513 void *private);
50e1e10f
TT		 514
515/* dirblock.c */
516extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block,
517 void *buf);
518extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block,
519 void *buf);
520
19c78dc0
TT		 521/* dir_iterate.c */
522extern errcode_t ext2fs_dir_iterate(ext2_filsys fs,
523 ino_t dir,
524 int flags,
525 char *block_buf,
526 int (*func)(struct ext2_dir_entry *dirent,
527 int offset,
528 int blocksize,
529 char *buf,
530 void *private),
531 void *private);
532 /* private to library */
533extern int ext2fs_process_dir_block(ext2_filsys fs,
534 blk_t *blocknr,
535 int blockcnt,
536 void *private);
537
a29f4d30
TT		 538/* dupfs.c */
539extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest);
19c78dc0 540
3839e657
TT		 541/* expanddir.c */
542extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ino_t dir);
543
544/* freefs.c */
545extern void ext2fs_free(ext2_filsys fs);
1e3472c5 546extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap);
50e1e10f
TT		 547extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap);
548extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap);
a29f4d30
TT		 549extern void ext2fs_free_dblist(ext2_dblist dblist);
550extern void ext2fs_badblocks_list_free(badblocks_list bb);
50e1e10f
TT		 551
552/* getsize.c */
553extern errcode_t ext2fs_get_device_size(const char *file, int blocksize,
554 blk_t *retblocks);
3839e657
TT		 555
556/* initialize.c */
557extern errcode_t ext2fs_initialize(const char *name, int flags,
558 struct ext2_super_block *param,
559 io_manager manager, ext2_filsys *ret_fs);
560
561/* inode.c */
562extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks,
563 ext2_inode_scan *ret_scan);
564extern void ext2fs_close_inode_scan(ext2_inode_scan scan);
565extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ino_t *ino,
566 struct ext2_inode *inode);
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TT		 567extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan,
568 int group);
569extern void ext2fs_set_inode_callback
570 (ext2_inode_scan scan,
571 errcode_t (*done_group)(ext2_filsys fs,
572 ext2_inode_scan scan,
573 dgrp_t group,
574 void * private),
575 void *done_group_data);
576extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags,
577 int clear_flags);
578extern errcode_t ext2fs_read_inode (ext2_filsys fs, ino_t ino,
3839e657 579 struct ext2_inode * inode);
19c78dc0 580extern errcode_t ext2fs_write_inode(ext2_filsys fs, ino_t ino,
3839e657
TT		 581 struct ext2_inode * inode);
582extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ino_t ino, blk_t *blocks);
583extern errcode_t ext2fs_check_directory(ext2_filsys fs, ino_t ino);
584
19c78dc0
TT		 585/* icount.c */
586extern void ext2fs_free_icount(ext2_icount_t icount);
521e3685
TT		 587extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags, int size,
588 ext2_icount_t hint, ext2_icount_t *ret);
19c78dc0
TT		 589extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags, int size,
590 ext2_icount_t *ret);
591extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ino_t ino,
592 __u16 *ret);
593extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ino_t ino,
594 __u16 *ret);
595extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ino_t ino,
596 __u16 *ret);
597extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ino_t ino,
598 __u16 count);
599extern ino_t ext2fs_get_icount_size(ext2_icount_t icount);
521e3685 600errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *);
19c78dc0 601
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TT		 602/* ismounted.c */
603extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags);
604
3839e657 605/* namei.c */
3839e657
TT		 606extern errcode_t ext2fs_lookup(ext2_filsys fs, ino_t dir, const char *name,
607 int namelen, char *buf, ino_t *inode);
608extern errcode_t ext2fs_namei(ext2_filsys fs, ino_t root, ino_t cwd,
609 const char *name, ino_t *inode);
1e3472c5
TT		 610errcode_t ext2fs_namei_follow(ext2_filsys fs, ino_t root, ino_t cwd,
611 const char *name, ino_t *inode);
612extern errcode_t ext2fs_follow_link(ext2_filsys fs, ino_t root, ino_t cwd,
613 ino_t inode, ino_t *res_inode);
614
615/* native.c */
616int ext2fs_native_flag(void);
3839e657
TT		 617
618/* newdir.c */
619extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ino_t dir_ino,
620 ino_t parent_ino, char **block);
621
622/* mkdir.c */
623extern errcode_t ext2fs_mkdir(ext2_filsys fs, ino_t parent, ino_t inum,
624 const char *name);
625
626/* openfs.c */
627extern errcode_t ext2fs_open(const char *name, int flags, int superblock,
628 int block_size, io_manager manager,
629 ext2_filsys *ret_fs);
3839e657
TT		 630
631/* get_pathname.c */
632extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ino_t dir, ino_t ino,
633 char **name);
634
635/* link.c */
636errcode_t ext2fs_link(ext2_filsys fs, ino_t dir, const char *name,
637 ino_t ino, int flags);
638errcode_t ext2fs_unlink(ext2_filsys fs, ino_t dir, const char *name,
639 ino_t ino, int flags);
640
641/* read_bb.c */
19c78dc0
TT		 642extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs,
643 ext2_badblocks_list *bb_list);
3839e657
TT		 644
645/* read_bb_file.c */
646extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f,
19c78dc0 647 ext2_badblocks_list *bb_list,
3839e657
TT		 648 void (*invalid)(ext2_filsys fs,
649 blk_t blk));
650
19c78dc0
TT		 651/* rs_bitmap.c */
652extern errcode_t ext2fs_resize_generic_bitmap(__u32 new_end,
653 __u32 new_real_end,
654 ext2fs_generic_bitmap bmap);
655extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end,
656 ext2fs_inode_bitmap bmap);
657extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end,
658 ext2fs_block_bitmap bmap);
a29f4d30
TT		 659extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src,
660 ext2fs_generic_bitmap *dest);
19c78dc0 661
50e1e10f
TT		 662/* swapfs.c */
663extern void ext2fs_swap_super(struct ext2_super_block * super);
664extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp);
1e3472c5
TT		 665extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t,
666 struct ext2_inode *f, int hostorder);
667
19c78dc0 668/* valid_blk.c */
521e3685
TT		 669extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode);
670
671/* version.c */
672extern int ext2fs_parse_version_string(const char *ver_string);
673extern int ext2fs_get_library_version(const char **ver_string,
674 const char **date_string);
50e1e10f 675
3839e657
TT		 676/* inline functions */
677extern void ext2fs_mark_super_dirty(ext2_filsys fs);
678extern void ext2fs_mark_changed(ext2_filsys fs);
679extern int ext2fs_test_changed(ext2_filsys fs);
680extern void ext2fs_mark_valid(ext2_filsys fs);
681extern void ext2fs_unmark_valid(ext2_filsys fs);
682extern int ext2fs_test_valid(ext2_filsys fs);
683extern void ext2fs_mark_ib_dirty(ext2_filsys fs);
684extern void ext2fs_mark_bb_dirty(ext2_filsys fs);
685extern int ext2fs_test_ib_dirty(ext2_filsys fs);
686extern int ext2fs_test_bb_dirty(ext2_filsys fs);
687extern int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk);
688extern int ext2fs_group_of_ino(ext2_filsys fs, ino_t ino);
689
690/*
691 * The actual inlined functions definitions themselves...
692 *
693 * If NO_INLINE_FUNCS is defined, then we won't try to do inline
694 * functions at all!
695 */
696#if (defined(INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS))
697#ifdef INCLUDE_INLINE_FUNCS
698#define _INLINE_ extern
699#else
700#define _INLINE_ extern __inline__
701#endif
702
703/*
704 * Mark a filesystem superblock as dirty
705 */
706_INLINE_ void ext2fs_mark_super_dirty(ext2_filsys fs)
707{
708 fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_CHANGED;
709}
710
711/*
712 * Mark a filesystem as changed
713 */
714_INLINE_ void ext2fs_mark_changed(ext2_filsys fs)
715{
716 fs->flags |= EXT2_FLAG_CHANGED;
717}
718
719/*
720 * Check to see if a filesystem has changed
721 */
722_INLINE_ int ext2fs_test_changed(ext2_filsys fs)
723{
724 return (fs->flags & EXT2_FLAG_CHANGED);
725}
726
727/*
728 * Mark a filesystem as valid
729 */
730_INLINE_ void ext2fs_mark_valid(ext2_filsys fs)
731{
732 fs->flags |= EXT2_FLAG_VALID;
733}
734
735/*
736 * Mark a filesystem as NOT valid
737 */
738_INLINE_ void ext2fs_unmark_valid(ext2_filsys fs)
739{
740 fs->flags &= ~EXT2_FLAG_VALID;
741}
742
743/*
744 * Check to see if a filesystem is valid
745 */
746_INLINE_ int ext2fs_test_valid(ext2_filsys fs)
747{
748 return (fs->flags & EXT2_FLAG_VALID);
749}
750
751/*
752 * Mark the inode bitmap as dirty
753 */
754_INLINE_ void ext2fs_mark_ib_dirty(ext2_filsys fs)
755{
756 fs->flags |= EXT2_FLAG_IB_DIRTY | EXT2_FLAG_CHANGED;
757}
758
759/*
760 * Mark the block bitmap as dirty
761 */
762_INLINE_ void ext2fs_mark_bb_dirty(ext2_filsys fs)
763{
764 fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_CHANGED;
765}
766
767/*
768 * Check to see if a filesystem's inode bitmap is dirty
769 */
770_INLINE_ int ext2fs_test_ib_dirty(ext2_filsys fs)
771{
772 return (fs->flags & EXT2_FLAG_IB_DIRTY);
773}
774
775/*
776 * Check to see if a filesystem's block bitmap is dirty
777 */
778_INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs)
779{
780 return (fs->flags & EXT2_FLAG_BB_DIRTY);
781}
782
783/*
784 * Return the group # of a block
785 */
786_INLINE_ int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk)
787{
788 return (blk - fs->super->s_first_data_block) /
789 fs->super->s_blocks_per_group;
790}
791
792/*
793 * Return the group # of an inode number
794 */
795_INLINE_ int ext2fs_group_of_ino(ext2_filsys fs, ino_t ino)
796{
797 return (ino - 1) / fs->super->s_inodes_per_group;
798}
799#undef _INLINE_
800#endif
801
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