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Changes to update Tomato RAF.
[tomato.git] / release / src / router / busybox / e2fsprogs / old_e2fsprogs / ext2fs / ext2fs.h
blobb989d265218443be799f560b4ab961019f8092cd
1 /* vi: set sw=4 ts=4: */
2 /*
3 * ext2fs.h --- ext2fs
4 *
5 * Copyright (C) 1993, 1994, 1995, 1996 Theodore Ts'o.
6 *
7 * %Begin-Header%
8 * This file may be redistributed under the terms of the GNU Public
9 * License.
10 * %End-Header%
11 */
12 #ifndef EXT2FS_EXT2FS_H
13 #define EXT2FS_EXT2FS_H 1
14
15
16 #ifdef __GNUC__
17 # define EXT2FS_ATTR(x) __attribute__(x)
18 #else
19 # define EXT2FS_ATTR(x)
20 #endif
21
22 #ifdef __cplusplus
23 extern "C" {
24 #endif
25
26 /*
27 * Where the master copy of the superblock is located, and how big
28 * superblocks are supposed to be. We define SUPERBLOCK_SIZE because
29 * the size of the superblock structure is not necessarily trustworthy
30 * (some versions have the padding set up so that the superblock is
31 * 1032 bytes long).
32 */
33 #define SUPERBLOCK_OFFSET 1024
34 #define SUPERBLOCK_SIZE 1024
35
36 /*
37 * The last ext2fs revision level that this version of the library is
38 * able to support.
39 */
40 #define EXT2_LIB_CURRENT_REV EXT2_DYNAMIC_REV
41
42 #ifdef HAVE_SYS_TYPES_H
43 #include <sys/types.h>
44 #endif
45
46 #include <stdio.h>
47 #include <stdlib.h>
48
49 #include "../e2fsbb.h"
50 #include "ext2_types.h"
51 #include "ext2_fs.h"
52
53 typedef __u32 ext2_ino_t;
54 typedef __u32 blk_t;
55 typedef __u32 dgrp_t;
56 typedef __u32 ext2_off_t;
57 typedef __s64 e2_blkcnt_t;
58 typedef __u32 ext2_dirhash_t;
59
60 #include "ext2_io.h"
61 #include "ext2_err.h"
62
63 typedef struct struct_ext2_filsys *ext2_filsys;
64
65 struct ext2fs_struct_generic_bitmap {
66 errcode_t magic;
67 ext2_filsys fs;
68 __u32 start, end;
69 __u32 real_end;
70 char * description;
71 char * bitmap;
72 errcode_t base_error_code;
73 __u32 reserved[7];
74 };
75
76 #define EXT2FS_MARK_ERROR 0
77 #define EXT2FS_UNMARK_ERROR 1
78 #define EXT2FS_TEST_ERROR 2
79
80 typedef struct ext2fs_struct_generic_bitmap *ext2fs_generic_bitmap;
81 typedef struct ext2fs_struct_generic_bitmap *ext2fs_inode_bitmap;
82 typedef struct ext2fs_struct_generic_bitmap *ext2fs_block_bitmap;
83
84 #define EXT2_FIRST_INODE(s) EXT2_FIRST_INO(s)
85
86 /*
87 * badblocks list definitions
88 */
89
90 typedef struct ext2_struct_u32_list *ext2_badblocks_list;
91 typedef struct ext2_struct_u32_iterate *ext2_badblocks_iterate;
92
93 typedef struct ext2_struct_u32_list *ext2_u32_list;
94 typedef struct ext2_struct_u32_iterate *ext2_u32_iterate;
95
96 /* old */
97 typedef struct ext2_struct_u32_list *badblocks_list;
98 typedef struct ext2_struct_u32_iterate *badblocks_iterate;
99
100 #define BADBLOCKS_FLAG_DIRTY 1
101
102 /*
103 * ext2_dblist structure and abstractions (see dblist.c)
104 */
105 struct ext2_db_entry {
106 ext2_ino_t ino;
107 blk_t blk;
108 int blockcnt;
109 };
110
111 typedef struct ext2_struct_dblist *ext2_dblist;
112
113 #define DBLIST_ABORT 1
114
115 /*
116 * ext2_fileio definitions
117 */
118
119 #define EXT2_FILE_WRITE 0x0001
120 #define EXT2_FILE_CREATE 0x0002
121
122 #define EXT2_FILE_MASK 0x00FF
123
124 #define EXT2_FILE_BUF_DIRTY 0x4000
125 #define EXT2_FILE_BUF_VALID 0x2000
126
127 typedef struct ext2_file *ext2_file_t;
128
129 #define EXT2_SEEK_SET 0
130 #define EXT2_SEEK_CUR 1
131 #define EXT2_SEEK_END 2
132
133 /*
134 * Flags for the ext2_filsys structure and for ext2fs_open()
135 */
136 #define EXT2_FLAG_RW 0x01
137 #define EXT2_FLAG_CHANGED 0x02
138 #define EXT2_FLAG_DIRTY 0x04
139 #define EXT2_FLAG_VALID 0x08
140 #define EXT2_FLAG_IB_DIRTY 0x10
141 #define EXT2_FLAG_BB_DIRTY 0x20
142 #define EXT2_FLAG_SWAP_BYTES 0x40
143 #define EXT2_FLAG_SWAP_BYTES_READ 0x80
144 #define EXT2_FLAG_SWAP_BYTES_WRITE 0x100
145 #define EXT2_FLAG_MASTER_SB_ONLY 0x200
146 #define EXT2_FLAG_FORCE 0x400
147 #define EXT2_FLAG_SUPER_ONLY 0x800
148 #define EXT2_FLAG_JOURNAL_DEV_OK 0x1000
149 #define EXT2_FLAG_IMAGE_FILE 0x2000
150
151 /*
152 * Special flag in the ext2 inode i_flag field that means that this is
153 * a new inode. (So that ext2_write_inode() can clear extra fields.)
154 */
155 #define EXT2_NEW_INODE_FL 0x80000000
156
157 /*
158 * Flags for mkjournal
159 *
160 * EXT2_MKJOURNAL_V1_SUPER Make a (deprecated) V1 journal superblock
161 */
162 #define EXT2_MKJOURNAL_V1_SUPER 0x0000001
163
164 struct struct_ext2_filsys {
165 errcode_t magic;
166 io_channel io;
167 int flags;
168 char * device_name;
169 struct ext2_super_block * super;
170 unsigned int blocksize;
171 int fragsize;
172 dgrp_t group_desc_count;
173 unsigned long desc_blocks;
174 struct ext2_group_desc * group_desc;
175 int inode_blocks_per_group;
176 ext2fs_inode_bitmap inode_map;
177 ext2fs_block_bitmap block_map;
178 errcode_t (*get_blocks)(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks);
179 errcode_t (*check_directory)(ext2_filsys fs, ext2_ino_t ino);
180 errcode_t (*write_bitmaps)(ext2_filsys fs);
181 errcode_t (*read_inode)(ext2_filsys fs, ext2_ino_t ino,
182 struct ext2_inode *inode);
183 errcode_t (*write_inode)(ext2_filsys fs, ext2_ino_t ino,
184 struct ext2_inode *inode);
185 ext2_badblocks_list badblocks;
186 ext2_dblist dblist;
187 __u32 stride; /* for mke2fs */
188 struct ext2_super_block * orig_super;
189 struct ext2_image_hdr * image_header;
190 __u32 umask;
191 /*
192 * Reserved for future expansion
193 */
194 __u32 reserved[8];
195
196 /*
197 * Reserved for the use of the calling application.
198 */
199 void * priv_data;
200
201 /*
202 * Inode cache
203 */
204 struct ext2_inode_cache *icache;
205 io_channel image_io;
206 };
207
208 #include "bitops.h"
209
210 /*
211 * Return flags for the block iterator functions
212 */
213 #define BLOCK_CHANGED 1
214 #define BLOCK_ABORT 2
215 #define BLOCK_ERROR 4
216
217 /*
218 * Block interate flags
219 *
220 * BLOCK_FLAG_APPEND, or BLOCK_FLAG_HOLE, indicates that the interator
221 * function should be called on blocks where the block number is zero.
222 * This is used by ext2fs_expand_dir() to be able to add a new block
223 * to an inode. It can also be used for programs that want to be able
224 * to deal with files that contain "holes".
225 *
226 * BLOCK_FLAG_TRAVERSE indicates that the iterator function for the
227 * indirect, doubly indirect, etc. blocks should be called after all
228 * of the blocks containined in the indirect blocks are processed.
229 * This is useful if you are going to be deallocating blocks from an
230 * inode.
231 *
232 * BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be
233 * called for data blocks only.
234 *
235 * BLOCK_FLAG_NO_LARGE is for internal use only. It informs
236 * ext2fs_block_iterate2 that large files won't be accepted.
237 */
238 #define BLOCK_FLAG_APPEND 1
239 #define BLOCK_FLAG_HOLE 1
240 #define BLOCK_FLAG_DEPTH_TRAVERSE 2
241 #define BLOCK_FLAG_DATA_ONLY 4
242
243 #define BLOCK_FLAG_NO_LARGE 0x1000
244
245 /*
246 * Magic "block count" return values for the block iterator function.
247 */
248 #define BLOCK_COUNT_IND (-1)
249 #define BLOCK_COUNT_DIND (-2)
250 #define BLOCK_COUNT_TIND (-3)
251 #define BLOCK_COUNT_TRANSLATOR (-4)
252
253 #if 0
254 /*
255 * Flags for ext2fs_move_blocks
256 */
257 #define EXT2_BMOVE_GET_DBLIST 0x0001
258 #define EXT2_BMOVE_DEBUG 0x0002
259 #endif
260
261 /*
262 * Flags for directory block reading and writing functions
263 */
264 #define EXT2_DIRBLOCK_V2_STRUCT 0x0001
265
266 /*
267 * Return flags for the directory iterator functions
268 */
269 #define DIRENT_CHANGED 1
270 #define DIRENT_ABORT 2
271 #define DIRENT_ERROR 3
272
273 /*
274 * Directory iterator flags
275 */
276
277 #define DIRENT_FLAG_INCLUDE_EMPTY 1
278 #define DIRENT_FLAG_INCLUDE_REMOVED 2
279
280 #define DIRENT_DOT_FILE 1
281 #define DIRENT_DOT_DOT_FILE 2
282 #define DIRENT_OTHER_FILE 3
283 #define DIRENT_DELETED_FILE 4
284
285 /*
286 * Inode scan definitions
287 */
288 typedef struct ext2_struct_inode_scan *ext2_inode_scan;
289
290 /*
291 * ext2fs_scan flags
292 */
293 #define EXT2_SF_CHK_BADBLOCKS 0x0001
294 #define EXT2_SF_BAD_INODE_BLK 0x0002
295 #define EXT2_SF_BAD_EXTRA_BYTES 0x0004
296 #define EXT2_SF_SKIP_MISSING_ITABLE 0x0008
297
298 /*
299 * ext2fs_check_if_mounted flags
300 */
301 #define EXT2_MF_MOUNTED 1
302 #define EXT2_MF_ISROOT 2
303 #define EXT2_MF_READONLY 4
304 #define EXT2_MF_SWAP 8
305 #define EXT2_MF_BUSY 16
306
307 /*
308 * Ext2/linux mode flags. We define them here so that we don't need
309 * to depend on the OS's sys/stat.h, since we may be compiling on a
310 * non-Linux system.
311 */
312 #define LINUX_S_IFMT 00170000
313 #define LINUX_S_IFSOCK 0140000
314 #define LINUX_S_IFLNK 0120000
315 #define LINUX_S_IFREG 0100000
316 #define LINUX_S_IFBLK 0060000
317 #define LINUX_S_IFDIR 0040000
318 #define LINUX_S_IFCHR 0020000
319 #define LINUX_S_IFIFO 0010000
320 #define LINUX_S_ISUID 0004000
321 #define LINUX_S_ISGID 0002000
322 #define LINUX_S_ISVTX 0001000
323
324 #define LINUX_S_IRWXU 00700
325 #define LINUX_S_IRUSR 00400
326 #define LINUX_S_IWUSR 00200
327 #define LINUX_S_IXUSR 00100
328
329 #define LINUX_S_IRWXG 00070
330 #define LINUX_S_IRGRP 00040
331 #define LINUX_S_IWGRP 00020
332 #define LINUX_S_IXGRP 00010
333
334 #define LINUX_S_IRWXO 00007
335 #define LINUX_S_IROTH 00004
336 #define LINUX_S_IWOTH 00002
337 #define LINUX_S_IXOTH 00001
338
339 #define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK)
340 #define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG)
341 #define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR)
342 #define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR)
343 #define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK)
344 #define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO)
345 #define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK)
346
347 /*
348 * ext2 size of an inode
349 */
350 #define EXT2_I_SIZE(i) ((i)->i_size | ((__u64) (i)->i_size_high << 32))
351
352 /*
353 * ext2_icount_t abstraction
354 */
355 #define EXT2_ICOUNT_OPT_INCREMENT 0x01
356
357 typedef struct ext2_icount *ext2_icount_t;
358
359 /*
360 * Flags for ext2fs_bmap
361 */
362 #define BMAP_ALLOC 0x0001
363 #define BMAP_SET 0x0002
364
365 /*
366 * Flags for imager.c functions
367 */
368 #define IMAGER_FLAG_INODEMAP 1
369 #define IMAGER_FLAG_SPARSEWRITE 2
370
371 /*
372 * For checking structure magic numbers...
373 */
374
375 #define EXT2_CHECK_MAGIC(struct, code) \
376 if ((struct)->magic != (code)) return (code)
377
378
379 /*
380 * For ext2 compression support
381 */
382 #define EXT2FS_COMPRESSED_BLKADDR ((blk_t) 0xffffffff)
383 #define HOLE_BLKADDR(_b) ((_b) == 0 || (_b) == EXT2FS_COMPRESSED_BLKADDR)
384
385 /*
386 * Features supported by this version of the library
387 */
388 #define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\
389 EXT2_FEATURE_COMPAT_IMAGIC_INODES|\
390 EXT3_FEATURE_COMPAT_HAS_JOURNAL|\
391 EXT2_FEATURE_COMPAT_RESIZE_INODE|\
392 EXT2_FEATURE_COMPAT_DIR_INDEX|\
393 EXT2_FEATURE_COMPAT_EXT_ATTR)
394
395 /* This #ifdef is temporary until compression is fully supported */
396 #ifdef ENABLE_COMPRESSION
397 #ifndef I_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL
398 /* If the below warning bugs you, then have
399 `CPPFLAGS=-DI_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL' in your
400 environment at configure time. */
401 #warning "Compression support is experimental"
402 #endif
403 #define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\
404 EXT2_FEATURE_INCOMPAT_COMPRESSION|\
405 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\
406 EXT2_FEATURE_INCOMPAT_META_BG|\
407 EXT3_FEATURE_INCOMPAT_RECOVER)
408 #else
409 #define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\
410 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\
411 EXT2_FEATURE_INCOMPAT_META_BG|\
412 EXT3_FEATURE_INCOMPAT_RECOVER)
413 #endif
414 #define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\
415 EXT2_FEATURE_RO_COMPAT_LARGE_FILE)
416 /*
417 * function prototypes
418 */
419
420 /* alloc.c */
421 extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode,
422 ext2fs_inode_bitmap map, ext2_ino_t *ret);
423 extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal,
424 ext2fs_block_bitmap map, blk_t *ret);
425 extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start,
426 blk_t finish, int num,
427 ext2fs_block_bitmap map,
428 blk_t *ret);
429 extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal,
430 char *block_buf, blk_t *ret);
431
432 /* alloc_sb.c */
433 extern int ext2fs_reserve_super_and_bgd(ext2_filsys fs,
434 dgrp_t group,
435 ext2fs_block_bitmap bmap);
436
437 /* alloc_stats.c */
438 void ext2fs_inode_alloc_stats(ext2_filsys fs, ext2_ino_t ino, int inuse);
439 void ext2fs_inode_alloc_stats2(ext2_filsys fs, ext2_ino_t ino,
440 int inuse, int isdir);
441 void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse);
442
443 /* alloc_tables.c */
444 extern errcode_t ext2fs_allocate_tables(ext2_filsys fs);
445 extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group,
446 ext2fs_block_bitmap bmap);
447
448 /* badblocks.c */
449 extern errcode_t ext2fs_u32_list_create(ext2_u32_list *ret, int size);
450 extern errcode_t ext2fs_u32_list_add(ext2_u32_list bb, __u32 blk);
451 extern int ext2fs_u32_list_find(ext2_u32_list bb, __u32 blk);
452 extern int ext2fs_u32_list_test(ext2_u32_list bb, blk_t blk);
453 extern errcode_t ext2fs_u32_list_iterate_begin(ext2_u32_list bb,
454 ext2_u32_iterate *ret);
455 extern int ext2fs_u32_list_iterate(ext2_u32_iterate iter, blk_t *blk);
456 extern void ext2fs_u32_list_iterate_end(ext2_u32_iterate iter);
457 extern errcode_t ext2fs_u32_copy(ext2_u32_list src, ext2_u32_list *dest);
458 extern int ext2fs_u32_list_equal(ext2_u32_list bb1, ext2_u32_list bb2);
459
460 extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret,
461 int size);
462 extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb,
463 blk_t blk);
464 extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb,
465 blk_t blk);
466 extern int ext2fs_u32_list_del(ext2_u32_list bb, __u32 blk);
467 extern void ext2fs_badblocks_list_del(ext2_u32_list bb, __u32 blk);
468 extern errcode_t
469 ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb,
470 ext2_badblocks_iterate *ret);
471 extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter,
472 blk_t *blk);
473 extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter);
474 extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src,
475 ext2_badblocks_list *dest);
476 extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1,
477 ext2_badblocks_list bb2);
478 extern int ext2fs_u32_list_count(ext2_u32_list bb);
479
480 /* bb_compat */
481 extern errcode_t badblocks_list_create(badblocks_list *ret, int size);
482 extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk);
483 extern int badblocks_list_test(badblocks_list bb, blk_t blk);
484 extern errcode_t badblocks_list_iterate_begin(badblocks_list bb,
485 badblocks_iterate *ret);
486 extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk);
487 extern void badblocks_list_iterate_end(badblocks_iterate iter);
488 extern void badblocks_list_free(badblocks_list bb);
489
490 /* bb_inode.c */
491 extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs,
492 ext2_badblocks_list bb_list);
493
494 /* bitmaps.c */
495 extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs);
496 extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs);
497 extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs);
498 extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs);
499 extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start,
500 __u32 end,
501 __u32 real_end,
502 const char *descr,
503 ext2fs_generic_bitmap *ret);
504 extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs,
505 const char *descr,
506 ext2fs_block_bitmap *ret);
507 extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs,
508 const char *descr,
509 ext2fs_inode_bitmap *ret);
510 extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap,
511 ext2_ino_t end, ext2_ino_t *oend);
512 extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap,
513 blk_t end, blk_t *oend);
514 extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap);
515 extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap);
516 extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs);
517 extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs);
518
519 /* block.c */
520 extern errcode_t ext2fs_block_iterate(ext2_filsys fs,
521 ext2_ino_t ino,
522 int flags,
523 char *block_buf,
524 int (*func)(ext2_filsys fs,
525 blk_t *blocknr,
526 int blockcnt,
527 void *priv_data),
528 void *priv_data);
529 errcode_t ext2fs_block_iterate2(ext2_filsys fs,
530 ext2_ino_t ino,
531 int flags,
532 char *block_buf,
533 int (*func)(ext2_filsys fs,
534 blk_t *blocknr,
535 e2_blkcnt_t blockcnt,
536 blk_t ref_blk,
537 int ref_offset,
538 void *priv_data),
539 void *priv_data);
540
541 /* bmap.c */
542 extern errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino,
543 struct ext2_inode *inode,
544 char *block_buf, int bmap_flags,
545 blk_t block, blk_t *phys_blk);
546
547
548 #if 0
549 /* bmove.c */
550 extern errcode_t ext2fs_move_blocks(ext2_filsys fs,
551 ext2fs_block_bitmap reserve,
552 ext2fs_block_bitmap alloc_map,
553 int flags);
554 #endif
555
556 /* check_desc.c */
557 extern errcode_t ext2fs_check_desc(ext2_filsys fs);
558
559 /* closefs.c */
560 extern errcode_t ext2fs_close(ext2_filsys fs);
561 extern errcode_t ext2fs_flush(ext2_filsys fs);
562 extern int ext2fs_bg_has_super(ext2_filsys fs, int group_block);
563 extern int ext2fs_super_and_bgd_loc(ext2_filsys fs,
564 dgrp_t group,
565 blk_t *ret_super_blk,
566 blk_t *ret_old_desc_blk,
567 blk_t *ret_new_desc_blk,
568 int *ret_meta_bg);
569 extern void ext2fs_update_dynamic_rev(ext2_filsys fs);
570
571 /* cmp_bitmaps.c */
572 extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1,
573 ext2fs_block_bitmap bm2);
574 extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1,
575 ext2fs_inode_bitmap bm2);
576
577 /* dblist.c */
578
579 extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs);
580 extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist);
581 extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ext2_ino_t ino,
582 blk_t blk, int blockcnt);
583 extern void ext2fs_dblist_sort(ext2_dblist dblist,
584 int (*sortfunc)(const void *,
585 const void *));
586 extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist,
587 int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info,
588 void *priv_data),
589 void *priv_data);
590 extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ext2_ino_t ino,
591 blk_t blk, int blockcnt);
592 extern errcode_t ext2fs_copy_dblist(ext2_dblist src,
593 ext2_dblist *dest);
594 extern int ext2fs_dblist_count(ext2_dblist dblist);
595
596 /* dblist_dir.c */
597 extern errcode_t
598 ext2fs_dblist_dir_iterate(ext2_dblist dblist,
599 int flags,
600 char *block_buf,
601 int (*func)(ext2_ino_t dir,
602 int entry,
603 struct ext2_dir_entry *dirent,
604 int offset,
605 int blocksize,
606 char *buf,
607 void *priv_data),
608 void *priv_data);
609
610 /* dirblock.c */
611 extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block,
612 void *buf);
613 extern errcode_t ext2fs_read_dir_block2(ext2_filsys fs, blk_t block,
614 void *buf, int flags);
615 extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block,
616 void *buf);
617 extern errcode_t ext2fs_write_dir_block2(ext2_filsys fs, blk_t block,
618 void *buf, int flags);
619
620 /* dirhash.c */
621 extern errcode_t ext2fs_dirhash(int version, const char *name, int len,
622 const __u32 *seed,
623 ext2_dirhash_t *ret_hash,
624 ext2_dirhash_t *ret_minor_hash);
625
626
627 /* dir_iterate.c */
628 extern errcode_t ext2fs_dir_iterate(ext2_filsys fs,
629 ext2_ino_t dir,
630 int flags,
631 char *block_buf,
632 int (*func)(struct ext2_dir_entry *dirent,
633 int offset,
634 int blocksize,
635 char *buf,
636 void *priv_data),
637 void *priv_data);
638 extern errcode_t ext2fs_dir_iterate2(ext2_filsys fs,
639 ext2_ino_t dir,
640 int flags,
641 char *block_buf,
642 int (*func)(ext2_ino_t dir,
643 int entry,
644 struct ext2_dir_entry *dirent,
645 int offset,
646 int blocksize,
647 char *buf,
648 void *priv_data),
649 void *priv_data);
650
651 /* dupfs.c */
652 extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest);
653
654 /* expanddir.c */
655 extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir);
656
657 /* ext_attr.c */
658 extern errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf);
659 extern errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block,
660 void *buf);
661 extern errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk,
662 char *block_buf,
663 int adjust, __u32 *newcount);
664
665 /* fileio.c */
666 extern errcode_t ext2fs_file_open2(ext2_filsys fs, ext2_ino_t ino,
667 struct ext2_inode *inode,
668 int flags, ext2_file_t *ret);
669 extern errcode_t ext2fs_file_open(ext2_filsys fs, ext2_ino_t ino,
670 int flags, ext2_file_t *ret);
671 extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file);
672 extern errcode_t ext2fs_file_close(ext2_file_t file);
673 extern errcode_t ext2fs_file_flush(ext2_file_t file);
674 extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf,
675 unsigned int wanted, unsigned int *got);
676 extern errcode_t ext2fs_file_write(ext2_file_t file, const void *buf,
677 unsigned int nbytes, unsigned int *written);
678 extern errcode_t ext2fs_file_llseek(ext2_file_t file, __u64 offset,
679 int whence, __u64 *ret_pos);
680 extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset,
681 int whence, ext2_off_t *ret_pos);
682 errcode_t ext2fs_file_get_lsize(ext2_file_t file, __u64 *ret_size);
683 extern ext2_off_t ext2fs_file_get_size(ext2_file_t file);
684 extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size);
685
686 /* finddev.c */
687 extern char *ext2fs_find_block_device(dev_t device);
688
689 /* flushb.c */
690 extern errcode_t ext2fs_sync_device(int fd, int flushb);
691
692 /* freefs.c */
693 extern void ext2fs_free(ext2_filsys fs);
694 extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap);
695 extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap);
696 extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap);
697 extern void ext2fs_free_dblist(ext2_dblist dblist);
698 extern void ext2fs_badblocks_list_free(ext2_badblocks_list bb);
699 extern void ext2fs_u32_list_free(ext2_u32_list bb);
700
701 /* getsize.c */
702 extern errcode_t ext2fs_get_device_size(const char *file, int blocksize,
703 blk_t *retblocks);
704
705 /* getsectsize.c */
706 errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize);
707
708 /* imager.c */
709 extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags);
710 extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags);
711 extern errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd, int flags);
712 extern errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd, int flags);
713 extern errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags);
714 extern errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags);
715
716 /* ind_block.c */
717 errcode_t ext2fs_read_ind_block(ext2_filsys fs, blk_t blk, void *buf);
718 errcode_t ext2fs_write_ind_block(ext2_filsys fs, blk_t blk, void *buf);
719
720 /* initialize.c */
721 extern errcode_t ext2fs_initialize(const char *name, int flags,
722 struct ext2_super_block *param,
723 io_manager manager, ext2_filsys *ret_fs);
724
725 /* icount.c */
726 extern void ext2fs_free_icount(ext2_icount_t icount);
727 extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags,
728 unsigned int size,
729 ext2_icount_t hint, ext2_icount_t *ret);
730 extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags,
731 unsigned int size,
732 ext2_icount_t *ret);
733 extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ext2_ino_t ino,
734 __u16 *ret);
735 extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ext2_ino_t ino,
736 __u16 *ret);
737 extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ext2_ino_t ino,
738 __u16 *ret);
739 extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ext2_ino_t ino,
740 __u16 count);
741 extern ext2_ino_t ext2fs_get_icount_size(ext2_icount_t icount);
742 errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *);
743
744 /* inode.c */
745 extern errcode_t ext2fs_flush_icache(ext2_filsys fs);
746 extern errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan,
747 ext2_ino_t *ino,
748 struct ext2_inode *inode,
749 int bufsize);
750 extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks,
751 ext2_inode_scan *ret_scan);
752 extern void ext2fs_close_inode_scan(ext2_inode_scan scan);
753 extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino,
754 struct ext2_inode *inode);
755 extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan,
756 int group);
757 extern void ext2fs_set_inode_callback
758 (ext2_inode_scan scan,
759 errcode_t (*done_group)(ext2_filsys fs,
760 dgrp_t group,
761 void * priv_data),
762 void *done_group_data);
763 extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags,
764 int clear_flags);
765 extern errcode_t ext2fs_read_inode_full(ext2_filsys fs, ext2_ino_t ino,
766 struct ext2_inode * inode,
767 int bufsize);
768 extern errcode_t ext2fs_read_inode (ext2_filsys fs, ext2_ino_t ino,
769 struct ext2_inode * inode);
770 extern errcode_t ext2fs_write_inode_full(ext2_filsys fs, ext2_ino_t ino,
771 struct ext2_inode * inode,
772 int bufsize);
773 extern errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino,
774 struct ext2_inode * inode);
775 extern errcode_t ext2fs_write_new_inode(ext2_filsys fs, ext2_ino_t ino,
776 struct ext2_inode * inode);
777 extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks);
778 extern errcode_t ext2fs_check_directory(ext2_filsys fs, ext2_ino_t ino);
779
780 /* inode_io.c */
781 extern io_manager inode_io_manager;
782 extern errcode_t ext2fs_inode_io_intern(ext2_filsys fs, ext2_ino_t ino,
783 char **name);
784 extern errcode_t ext2fs_inode_io_intern2(ext2_filsys fs, ext2_ino_t ino,
785 struct ext2_inode *inode,
786 char **name);
787
788 /* ismounted.c */
789 extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags);
790 extern errcode_t ext2fs_check_mount_point(const char *device, int *mount_flags,
791 char *mtpt, int mtlen);
792
793 /* namei.c */
794 extern errcode_t ext2fs_lookup(ext2_filsys fs, ext2_ino_t dir, const char *name,
795 int namelen, char *buf, ext2_ino_t *inode);
796 extern errcode_t ext2fs_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
797 const char *name, ext2_ino_t *inode);
798 errcode_t ext2fs_namei_follow(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
799 const char *name, ext2_ino_t *inode);
800 extern errcode_t ext2fs_follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
801 ext2_ino_t inode, ext2_ino_t *res_inode);
802
803 /* native.c */
804 int ext2fs_native_flag(void);
805
806 /* newdir.c */
807 extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino,
808 ext2_ino_t parent_ino, char **block);
809
810 /* mkdir.c */
811 extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum,
812 const char *name);
813
814 /* mkjournal.c */
815 extern errcode_t ext2fs_create_journal_superblock(ext2_filsys fs,
816 __u32 size, int flags,
817 char **ret_jsb);
818 extern errcode_t ext2fs_add_journal_device(ext2_filsys fs,
819 ext2_filsys journal_dev);
820 extern errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t size,
821 int flags);
822
823 /* openfs.c */
824 extern errcode_t ext2fs_open(const char *name, int flags, int superblock,
825 unsigned int block_size, io_manager manager,
826 ext2_filsys *ret_fs);
827 extern errcode_t ext2fs_open2(const char *name, const char *io_options,
828 int flags, int superblock,
829 unsigned int block_size, io_manager manager,
830 ext2_filsys *ret_fs);
831 extern blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block,
832 dgrp_t i);
833 errcode_t ext2fs_get_data_io(ext2_filsys fs, io_channel *old_io);
834 errcode_t ext2fs_set_data_io(ext2_filsys fs, io_channel new_io);
835 errcode_t ext2fs_rewrite_to_io(ext2_filsys fs, io_channel new_io);
836
837 /* get_pathname.c */
838 extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino,
839 char **name);
840
841 /* link.c */
842 errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name,
843 ext2_ino_t ino, int flags);
844 errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir, const char *name,
845 ext2_ino_t ino, int flags);
846
847 /* read_bb.c */
848 extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs,
849 ext2_badblocks_list *bb_list);
850
851 /* read_bb_file.c */
852 extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f,
853 ext2_badblocks_list *bb_list,
854 void *priv_data,
855 void (*invalid)(ext2_filsys fs,
856 blk_t blk,
857 char *badstr,
858 void *priv_data));
859 extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f,
860 ext2_badblocks_list *bb_list,
861 void (*invalid)(ext2_filsys fs,
862 blk_t blk));
863
864 /* res_gdt.c */
865 extern errcode_t ext2fs_create_resize_inode(ext2_filsys fs);
866
867 /* rs_bitmap.c */
868 extern errcode_t ext2fs_resize_generic_bitmap(__u32 new_end,
869 __u32 new_real_end,
870 ext2fs_generic_bitmap bmap);
871 extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end,
872 ext2fs_inode_bitmap bmap);
873 extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end,
874 ext2fs_block_bitmap bmap);
875 extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src,
876 ext2fs_generic_bitmap *dest);
877
878 /* swapfs.c */
879 extern void ext2fs_swap_ext_attr(char *to, char *from, int bufsize,
880 int has_header);
881 extern void ext2fs_swap_super(struct ext2_super_block * super);
882 extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp);
883 extern void ext2fs_swap_inode_full(ext2_filsys fs, struct ext2_inode_large *t,
884 struct ext2_inode_large *f, int hostorder,
885 int bufsize);
886 extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t,
887 struct ext2_inode *f, int hostorder);
888
889 /* valid_blk.c */
890 extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode);
891
892 /* version.c */
893 extern int ext2fs_parse_version_string(const char *ver_string);
894 extern int ext2fs_get_library_version(const char **ver_string,
895 const char **date_string);
896
897 /* write_bb_file.c */
898 extern errcode_t ext2fs_write_bb_FILE(ext2_badblocks_list bb_list,
899 unsigned int flags,
900 FILE *f);
901
902
903 /* inline functions */
904 extern errcode_t ext2fs_get_mem(unsigned long size, void *ptr);
905 extern errcode_t ext2fs_free_mem(void *ptr);
906 extern errcode_t ext2fs_resize_mem(unsigned long old_size,
907 unsigned long size, void *ptr);
908 extern void ext2fs_mark_super_dirty(ext2_filsys fs);
909 extern void ext2fs_mark_changed(ext2_filsys fs);
910 extern int ext2fs_test_changed(ext2_filsys fs);
911 extern void ext2fs_mark_valid(ext2_filsys fs);
912 extern void ext2fs_unmark_valid(ext2_filsys fs);
913 extern int ext2fs_test_valid(ext2_filsys fs);
914 extern void ext2fs_mark_ib_dirty(ext2_filsys fs);
915 extern void ext2fs_mark_bb_dirty(ext2_filsys fs);
916 extern int ext2fs_test_ib_dirty(ext2_filsys fs);
917 extern int ext2fs_test_bb_dirty(ext2_filsys fs);
918 extern int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk);
919 extern int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino);
920 extern blk_t ext2fs_inode_data_blocks(ext2_filsys fs,
921 struct ext2_inode *inode);
922
923 #ifdef __cplusplus
924 }
925 #endif
926
927 #endif
Tomato firmware and modifications.