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Changes for kernel and Busybox
[tomato.git] / release / src / router / busybox / e2fsprogs / ext2fs / ext2fs.h
blobffd096f4168984fe7f2d1398b846aed0e02306b0
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 "ext2_types.h"
50 #include "ext2_fs.h"
51
52 typedef __u32 ext2_ino_t;
53 typedef __u32 blk_t;
54 typedef __u32 dgrp_t;
55 typedef __u32 ext2_off_t;
56 typedef __s64 e2_blkcnt_t;
57 typedef __u32 ext2_dirhash_t;
58
59 #include "ext2_io.h"
60 #include "ext2_err.h"
61
62 typedef struct struct_ext2_filsys *ext2_filsys;
63
64 struct ext2fs_struct_generic_bitmap {
65 errcode_t magic;
66 ext2_filsys fs;
67 __u32 start, end;
68 __u32 real_end;
69 char * description;
70 char * bitmap;
71 errcode_t base_error_code;
72 __u32 reserved[7];
73 };
74
75 #define EXT2FS_MARK_ERROR 0
76 #define EXT2FS_UNMARK_ERROR 1
77 #define EXT2FS_TEST_ERROR 2
78
79 typedef struct ext2fs_struct_generic_bitmap *ext2fs_generic_bitmap;
80 typedef struct ext2fs_struct_generic_bitmap *ext2fs_inode_bitmap;
81 typedef struct ext2fs_struct_generic_bitmap *ext2fs_block_bitmap;
82
83 #define EXT2_FIRST_INODE(s) EXT2_FIRST_INO(s)
84
85 /*
86 * badblocks list definitions
87 */
88
89 typedef struct ext2_struct_u32_list *ext2_badblocks_list;
90 typedef struct ext2_struct_u32_iterate *ext2_badblocks_iterate;
91
92 typedef struct ext2_struct_u32_list *ext2_u32_list;
93 typedef struct ext2_struct_u32_iterate *ext2_u32_iterate;
94
95 /* old */
96 typedef struct ext2_struct_u32_list *badblocks_list;
97 typedef struct ext2_struct_u32_iterate *badblocks_iterate;
98
99 #define BADBLOCKS_FLAG_DIRTY 1
100
101 /*
102 * ext2_dblist structure and abstractions (see dblist.c)
103 */
104 struct ext2_db_entry {
105 ext2_ino_t ino;
106 blk_t blk;
107 int blockcnt;
108 };
109
110 typedef struct ext2_struct_dblist *ext2_dblist;
111
112 #define DBLIST_ABORT 1
113
114 /*
115 * ext2_fileio definitions
116 */
117
118 #define EXT2_FILE_WRITE 0x0001
119 #define EXT2_FILE_CREATE 0x0002
120
121 #define EXT2_FILE_MASK 0x00FF
122
123 #define EXT2_FILE_BUF_DIRTY 0x4000
124 #define EXT2_FILE_BUF_VALID 0x2000
125
126 typedef struct ext2_file *ext2_file_t;
127
128 #define EXT2_SEEK_SET 0
129 #define EXT2_SEEK_CUR 1
130 #define EXT2_SEEK_END 2
131
132 /*
133 * Flags for the ext2_filsys structure and for ext2fs_open()
134 */
135 #define EXT2_FLAG_RW 0x01
136 #define EXT2_FLAG_CHANGED 0x02
137 #define EXT2_FLAG_DIRTY 0x04
138 #define EXT2_FLAG_VALID 0x08
139 #define EXT2_FLAG_IB_DIRTY 0x10
140 #define EXT2_FLAG_BB_DIRTY 0x20
141 #define EXT2_FLAG_SWAP_BYTES 0x40
142 #define EXT2_FLAG_SWAP_BYTES_READ 0x80
143 #define EXT2_FLAG_SWAP_BYTES_WRITE 0x100
144 #define EXT2_FLAG_MASTER_SB_ONLY 0x200
145 #define EXT2_FLAG_FORCE 0x400
146 #define EXT2_FLAG_SUPER_ONLY 0x800
147 #define EXT2_FLAG_JOURNAL_DEV_OK 0x1000
148 #define EXT2_FLAG_IMAGE_FILE 0x2000
149
150 /*
151 * Special flag in the ext2 inode i_flag field that means that this is
152 * a new inode. (So that ext2_write_inode() can clear extra fields.)
153 */
154 #define EXT2_NEW_INODE_FL 0x80000000
155
156 /*
157 * Flags for mkjournal
158 *
159 * EXT2_MKJOURNAL_V1_SUPER Make a (deprecated) V1 journal superblock
160 */
161 #define EXT2_MKJOURNAL_V1_SUPER 0x0000001
162
163 struct struct_ext2_filsys {
164 errcode_t magic;
165 io_channel io;
166 int flags;
167 char * device_name;
168 struct ext2_super_block * super;
169 unsigned int blocksize;
170 int fragsize;
171 dgrp_t group_desc_count;
172 unsigned long desc_blocks;
173 struct ext2_group_desc * group_desc;
174 int inode_blocks_per_group;
175 ext2fs_inode_bitmap inode_map;
176 ext2fs_block_bitmap block_map;
177 errcode_t (*get_blocks)(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks);
178 errcode_t (*check_directory)(ext2_filsys fs, ext2_ino_t ino);
179 errcode_t (*write_bitmaps)(ext2_filsys fs);
180 errcode_t (*read_inode)(ext2_filsys fs, ext2_ino_t ino,
181 struct ext2_inode *inode);
182 errcode_t (*write_inode)(ext2_filsys fs, ext2_ino_t ino,
183 struct ext2_inode *inode);
184 ext2_badblocks_list badblocks;
185 ext2_dblist dblist;
186 __u32 stride; /* for mke2fs */
187 struct ext2_super_block * orig_super;
188 struct ext2_image_hdr * image_header;
189 __u32 umask;
190 /*
191 * Reserved for future expansion
192 */
193 __u32 reserved[8];
194
195 /*
196 * Reserved for the use of the calling application.
197 */
198 void * priv_data;
199
200 /*
201 * Inode cache
202 */
203 struct ext2_inode_cache *icache;
204 io_channel image_io;
205 };
206
207 #include "bitops.h"
208
209 /*
210 * Return flags for the block iterator functions
211 */
212 #define BLOCK_CHANGED 1
213 #define BLOCK_ABORT 2
214 #define BLOCK_ERROR 4
215
216 /*
217 * Block interate flags
218 *
219 * BLOCK_FLAG_APPEND, or BLOCK_FLAG_HOLE, indicates that the interator
220 * function should be called on blocks where the block number is zero.
221 * This is used by ext2fs_expand_dir() to be able to add a new block
222 * to an inode. It can also be used for programs that want to be able
223 * to deal with files that contain "holes".
224 *
225 * BLOCK_FLAG_TRAVERSE indicates that the iterator function for the
226 * indirect, doubly indirect, etc. blocks should be called after all
227 * of the blocks containined in the indirect blocks are processed.
228 * This is useful if you are going to be deallocating blocks from an
229 * inode.
230 *
231 * BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be
232 * called for data blocks only.
233 *
234 * BLOCK_FLAG_NO_LARGE is for internal use only. It informs
235 * ext2fs_block_iterate2 that large files won't be accepted.
236 */
237 #define BLOCK_FLAG_APPEND 1
238 #define BLOCK_FLAG_HOLE 1
239 #define BLOCK_FLAG_DEPTH_TRAVERSE 2
240 #define BLOCK_FLAG_DATA_ONLY 4
241
242 #define BLOCK_FLAG_NO_LARGE 0x1000
243
244 /*
245 * Magic "block count" return values for the block iterator function.
246 */
247 #define BLOCK_COUNT_IND (-1)
248 #define BLOCK_COUNT_DIND (-2)
249 #define BLOCK_COUNT_TIND (-3)
250 #define BLOCK_COUNT_TRANSLATOR (-4)
251
252 #if 0
253 /*
254 * Flags for ext2fs_move_blocks
255 */
256 #define EXT2_BMOVE_GET_DBLIST 0x0001
257 #define EXT2_BMOVE_DEBUG 0x0002
258 #endif
259
260 /*
261 * Flags for directory block reading and writing functions
262 */
263 #define EXT2_DIRBLOCK_V2_STRUCT 0x0001
264
265 /*
266 * Return flags for the directory iterator functions
267 */
268 #define DIRENT_CHANGED 1
269 #define DIRENT_ABORT 2
270 #define DIRENT_ERROR 3
271
272 /*
273 * Directory iterator flags
274 */
275
276 #define DIRENT_FLAG_INCLUDE_EMPTY 1
277 #define DIRENT_FLAG_INCLUDE_REMOVED 2
278
279 #define DIRENT_DOT_FILE 1
280 #define DIRENT_DOT_DOT_FILE 2
281 #define DIRENT_OTHER_FILE 3
282 #define DIRENT_DELETED_FILE 4
283
284 /*
285 * Inode scan definitions
286 */
287 typedef struct ext2_struct_inode_scan *ext2_inode_scan;
288
289 /*
290 * ext2fs_scan flags
291 */
292 #define EXT2_SF_CHK_BADBLOCKS 0x0001
293 #define EXT2_SF_BAD_INODE_BLK 0x0002
294 #define EXT2_SF_BAD_EXTRA_BYTES 0x0004
295 #define EXT2_SF_SKIP_MISSING_ITABLE 0x0008
296
297 /*
298 * ext2fs_check_if_mounted flags
299 */
300 #define EXT2_MF_MOUNTED 1
301 #define EXT2_MF_ISROOT 2
302 #define EXT2_MF_READONLY 4
303 #define EXT2_MF_SWAP 8
304 #define EXT2_MF_BUSY 16
305
306 /*
307 * Ext2/linux mode flags. We define them here so that we don't need
308 * to depend on the OS's sys/stat.h, since we may be compiling on a
309 * non-Linux system.
310 */
311 #define LINUX_S_IFMT 00170000
312 #define LINUX_S_IFSOCK 0140000
313 #define LINUX_S_IFLNK 0120000
314 #define LINUX_S_IFREG 0100000
315 #define LINUX_S_IFBLK 0060000
316 #define LINUX_S_IFDIR 0040000
317 #define LINUX_S_IFCHR 0020000
318 #define LINUX_S_IFIFO 0010000
319 #define LINUX_S_ISUID 0004000
320 #define LINUX_S_ISGID 0002000
321 #define LINUX_S_ISVTX 0001000
322
323 #define LINUX_S_IRWXU 00700
324 #define LINUX_S_IRUSR 00400
325 #define LINUX_S_IWUSR 00200
326 #define LINUX_S_IXUSR 00100
327
328 #define LINUX_S_IRWXG 00070
329 #define LINUX_S_IRGRP 00040
330 #define LINUX_S_IWGRP 00020
331 #define LINUX_S_IXGRP 00010
332
333 #define LINUX_S_IRWXO 00007
334 #define LINUX_S_IROTH 00004
335 #define LINUX_S_IWOTH 00002
336 #define LINUX_S_IXOTH 00001
337
338 #define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK)
339 #define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG)
340 #define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR)
341 #define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR)
342 #define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK)
343 #define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO)
344 #define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK)
345
346 /*
347 * ext2 size of an inode
348 */
349 #define EXT2_I_SIZE(i) ((i)->i_size | ((__u64) (i)->i_size_high << 32))
350
351 /*
352 * ext2_icount_t abstraction
353 */
354 #define EXT2_ICOUNT_OPT_INCREMENT 0x01
355
356 typedef struct ext2_icount *ext2_icount_t;
357
358 /*
359 * Flags for ext2fs_bmap
360 */
361 #define BMAP_ALLOC 0x0001
362 #define BMAP_SET 0x0002
363
364 /*
365 * Flags for imager.c functions
366 */
367 #define IMAGER_FLAG_INODEMAP 1
368 #define IMAGER_FLAG_SPARSEWRITE 2
369
370 /*
371 * For checking structure magic numbers...
372 */
373
374 #define EXT2_CHECK_MAGIC(struct, code) \
375 if ((struct)->magic != (code)) return (code)
376
377
378 /*
379 * For ext2 compression support
380 */
381 #define EXT2FS_COMPRESSED_BLKADDR ((blk_t) 0xffffffff)
382 #define HOLE_BLKADDR(_b) ((_b) == 0 || (_b) == EXT2FS_COMPRESSED_BLKADDR)
383
384 /*
385 * Features supported by this version of the library
386 */
387 #define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\
388 EXT2_FEATURE_COMPAT_IMAGIC_INODES|\
389 EXT3_FEATURE_COMPAT_HAS_JOURNAL|\
390 EXT2_FEATURE_COMPAT_RESIZE_INO|\
391 EXT2_FEATURE_COMPAT_DIR_INDEX|\
392 EXT2_FEATURE_COMPAT_EXT_ATTR)
393
394 /* This #ifdef is temporary until compression is fully supported */
395 #ifdef ENABLE_COMPRESSION
396 #ifndef I_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL
397 /* If the below warning bugs you, then have
398 `CPPFLAGS=-DI_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL' in your
399 environment at configure time. */
400 #warning "Compression support is experimental"
401 #endif
402 #define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\
403 EXT2_FEATURE_INCOMPAT_COMPRESSION|\
404 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\
405 EXT2_FEATURE_INCOMPAT_META_BG|\
406 EXT3_FEATURE_INCOMPAT_RECOVER)
407 #else
408 #define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\
409 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\
410 EXT2_FEATURE_INCOMPAT_META_BG|\
411 EXT3_FEATURE_INCOMPAT_RECOVER)
412 #endif
413 #define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\
414 EXT2_FEATURE_RO_COMPAT_LARGE_FILE)
415 /*
416 * function prototypes
417 */
418
419 /* alloc.c */
420 extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode,
421 ext2fs_inode_bitmap map, ext2_ino_t *ret);
422 extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal,
423 ext2fs_block_bitmap map, blk_t *ret);
424 extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start,
425 blk_t finish, int num,
426 ext2fs_block_bitmap map,
427 blk_t *ret);
428 extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal,
429 char *block_buf, blk_t *ret);
430
431 /* alloc_sb.c */
432 extern int ext2fs_reserve_super_and_bgd(ext2_filsys fs,
433 dgrp_t group,
434 ext2fs_block_bitmap bmap);
435
436 /* alloc_stats.c */
437 void ext2fs_inode_alloc_stats(ext2_filsys fs, ext2_ino_t ino, int inuse);
438 void ext2fs_inode_alloc_stats2(ext2_filsys fs, ext2_ino_t ino,
439 int inuse, int isdir);
440 void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse);
441
442 /* alloc_tables.c */
443 extern errcode_t ext2fs_allocate_tables(ext2_filsys fs);
444 extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group,
445 ext2fs_block_bitmap bmap);
446
447 /* badblocks.c */
448 extern errcode_t ext2fs_u32_list_create(ext2_u32_list *ret, int size);
449 extern errcode_t ext2fs_u32_list_add(ext2_u32_list bb, __u32 blk);
450 extern int ext2fs_u32_list_find(ext2_u32_list bb, __u32 blk);
451 extern int ext2fs_u32_list_test(ext2_u32_list bb, blk_t blk);
452 extern errcode_t ext2fs_u32_list_iterate_begin(ext2_u32_list bb,
453 ext2_u32_iterate *ret);
454 extern int ext2fs_u32_list_iterate(ext2_u32_iterate iter, blk_t *blk);
455 extern void ext2fs_u32_list_iterate_end(ext2_u32_iterate iter);
456 extern errcode_t ext2fs_u32_copy(ext2_u32_list src, ext2_u32_list *dest);
457 extern int ext2fs_u32_list_equal(ext2_u32_list bb1, ext2_u32_list bb2);
458
459 extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret,
460 int size);
461 extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb,
462 blk_t blk);
463 extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb,
464 blk_t blk);
465 extern int ext2fs_u32_list_del(ext2_u32_list bb, __u32 blk);
466 extern void ext2fs_badblocks_list_del(ext2_u32_list bb, __u32 blk);
467 extern errcode_t
468 ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb,
469 ext2_badblocks_iterate *ret);
470 extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter,
471 blk_t *blk);
472 extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter);
473 extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src,
474 ext2_badblocks_list *dest);
475 extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1,
476 ext2_badblocks_list bb2);
477 extern int ext2fs_u32_list_count(ext2_u32_list bb);
478
479 /* bb_compat */
480 extern errcode_t badblocks_list_create(badblocks_list *ret, int size);
481 extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk);
482 extern int badblocks_list_test(badblocks_list bb, blk_t blk);
483 extern errcode_t badblocks_list_iterate_begin(badblocks_list bb,
484 badblocks_iterate *ret);
485 extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk);
486 extern void badblocks_list_iterate_end(badblocks_iterate iter);
487 extern void badblocks_list_free(badblocks_list bb);
488
489 /* bb_inode.c */
490 extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs,
491 ext2_badblocks_list bb_list);
492
493 /* bitmaps.c */
494 extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs);
495 extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs);
496 extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs);
497 extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs);
498 extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start,
499 __u32 end,
500 __u32 real_end,
501 const char *descr,
502 ext2fs_generic_bitmap *ret);
503 extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs,
504 const char *descr,
505 ext2fs_block_bitmap *ret);
506 extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs,
507 const char *descr,
508 ext2fs_inode_bitmap *ret);
509 extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap,
510 ext2_ino_t end, ext2_ino_t *oend);
511 extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap,
512 blk_t end, blk_t *oend);
513 extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap);
514 extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap);
515 extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs);
516 extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs);
517
518 /* block.c */
519 extern errcode_t ext2fs_block_iterate(ext2_filsys fs,
520 ext2_ino_t ino,
521 int flags,
522 char *block_buf,
523 int (*func)(ext2_filsys fs,
524 blk_t *blocknr,
525 int blockcnt,
526 void *priv_data),
527 void *priv_data);
528 errcode_t ext2fs_block_iterate2(ext2_filsys fs,
529 ext2_ino_t ino,
530 int flags,
531 char *block_buf,
532 int (*func)(ext2_filsys fs,
533 blk_t *blocknr,
534 e2_blkcnt_t blockcnt,
535 blk_t ref_blk,
536 int ref_offset,
537 void *priv_data),
538 void *priv_data);
539
540 /* bmap.c */
541 extern errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino,
542 struct ext2_inode *inode,
543 char *block_buf, int bmap_flags,
544 blk_t block, blk_t *phys_blk);
545
546
547 #if 0
548 /* bmove.c */
549 extern errcode_t ext2fs_move_blocks(ext2_filsys fs,
550 ext2fs_block_bitmap reserve,
551 ext2fs_block_bitmap alloc_map,
552 int flags);
553 #endif
554
555 /* check_desc.c */
556 extern errcode_t ext2fs_check_desc(ext2_filsys fs);
557
558 /* closefs.c */
559 extern errcode_t ext2fs_close(ext2_filsys fs);
560 extern errcode_t ext2fs_flush(ext2_filsys fs);
561 extern int ext2fs_bg_has_super(ext2_filsys fs, int group_block);
562 extern int ext2fs_super_and_bgd_loc(ext2_filsys fs,
563 dgrp_t group,
564 blk_t *ret_super_blk,
565 blk_t *ret_old_desc_blk,
566 blk_t *ret_new_desc_blk,
567 int *ret_meta_bg);
568 extern void ext2fs_update_dynamic_rev(ext2_filsys fs);
569
570 /* cmp_bitmaps.c */
571 extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1,
572 ext2fs_block_bitmap bm2);
573 extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1,
574 ext2fs_inode_bitmap bm2);
575
576 /* dblist.c */
577
578 extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs);
579 extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist);
580 extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ext2_ino_t ino,
581 blk_t blk, int blockcnt);
582 extern void ext2fs_dblist_sort(ext2_dblist dblist,
583 int (*sortfunc)(const void *,
584 const void *));
585 extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist,
586 int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info,
587 void *priv_data),
588 void *priv_data);
589 extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ext2_ino_t ino,
590 blk_t blk, int blockcnt);
591 extern errcode_t ext2fs_copy_dblist(ext2_dblist src,
592 ext2_dblist *dest);
593 extern int ext2fs_dblist_count(ext2_dblist dblist);
594
595 /* dblist_dir.c */
596 extern errcode_t
597 ext2fs_dblist_dir_iterate(ext2_dblist dblist,
598 int flags,
599 char *block_buf,
600 int (*func)(ext2_ino_t dir,
601 int entry,
602 struct ext2_dir_entry *dirent,
603 int offset,
604 int blocksize,
605 char *buf,
606 void *priv_data),
607 void *priv_data);
608
609 /* dirblock.c */
610 extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block,
611 void *buf);
612 extern errcode_t ext2fs_read_dir_block2(ext2_filsys fs, blk_t block,
613 void *buf, int flags);
614 extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block,
615 void *buf);
616 extern errcode_t ext2fs_write_dir_block2(ext2_filsys fs, blk_t block,
617 void *buf, int flags);
618
619 /* dirhash.c */
620 extern errcode_t ext2fs_dirhash(int version, const char *name, int len,
621 const __u32 *seed,
622 ext2_dirhash_t *ret_hash,
623 ext2_dirhash_t *ret_minor_hash);
624
625
626 /* dir_iterate.c */
627 extern errcode_t ext2fs_dir_iterate(ext2_filsys fs,
628 ext2_ino_t dir,
629 int flags,
630 char *block_buf,
631 int (*func)(struct ext2_dir_entry *dirent,
632 int offset,
633 int blocksize,
634 char *buf,
635 void *priv_data),
636 void *priv_data);
637 extern errcode_t ext2fs_dir_iterate2(ext2_filsys fs,
638 ext2_ino_t dir,
639 int flags,
640 char *block_buf,
641 int (*func)(ext2_ino_t dir,
642 int entry,
643 struct ext2_dir_entry *dirent,
644 int offset,
645 int blocksize,
646 char *buf,
647 void *priv_data),
648 void *priv_data);
649
650 /* dupfs.c */
651 extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest);
652
653 /* expanddir.c */
654 extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir);
655
656 /* ext_attr.c */
657 extern errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf);
658 extern errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block,
659 void *buf);
660 extern errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk,
661 char *block_buf,
662 int adjust, __u32 *newcount);
663
664 /* fileio.c */
665 extern errcode_t ext2fs_file_open2(ext2_filsys fs, ext2_ino_t ino,
666 struct ext2_inode *inode,
667 int flags, ext2_file_t *ret);
668 extern errcode_t ext2fs_file_open(ext2_filsys fs, ext2_ino_t ino,
669 int flags, ext2_file_t *ret);
670 extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file);
671 extern errcode_t ext2fs_file_close(ext2_file_t file);
672 extern errcode_t ext2fs_file_flush(ext2_file_t file);
673 extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf,
674 unsigned int wanted, unsigned int *got);
675 extern errcode_t ext2fs_file_write(ext2_file_t file, const void *buf,
676 unsigned int nbytes, unsigned int *written);
677 extern errcode_t ext2fs_file_llseek(ext2_file_t file, __u64 offset,
678 int whence, __u64 *ret_pos);
679 extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset,
680 int whence, ext2_off_t *ret_pos);
681 errcode_t ext2fs_file_get_lsize(ext2_file_t file, __u64 *ret_size);
682 extern ext2_off_t ext2fs_file_get_size(ext2_file_t file);
683 extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size);
684
685 /* finddev.c */
686 extern char *ext2fs_find_block_device(dev_t device);
687
688 /* flushb.c */
689 extern errcode_t ext2fs_sync_device(int fd, int flushb);
690
691 /* freefs.c */
692 extern void ext2fs_free(ext2_filsys fs);
693 extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap);
694 extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap);
695 extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap);
696 extern void ext2fs_free_dblist(ext2_dblist dblist);
697 extern void ext2fs_badblocks_list_free(ext2_badblocks_list bb);
698 extern void ext2fs_u32_list_free(ext2_u32_list bb);
699
700 /* getsize.c */
701 extern errcode_t ext2fs_get_device_size(const char *file, int blocksize,
702 blk_t *retblocks);
703
704 /* getsectsize.c */
705 errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize);
706
707 /* imager.c */
708 extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags);
709 extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags);
710 extern errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd, int flags);
711 extern errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd, int flags);
712 extern errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags);
713 extern errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags);
714
715 /* ind_block.c */
716 errcode_t ext2fs_read_ind_block(ext2_filsys fs, blk_t blk, void *buf);
717 errcode_t ext2fs_write_ind_block(ext2_filsys fs, blk_t blk, void *buf);
718
719 /* initialize.c */
720 extern errcode_t ext2fs_initialize(const char *name, int flags,
721 struct ext2_super_block *param,
722 io_manager manager, ext2_filsys *ret_fs);
723
724 /* icount.c */
725 extern void ext2fs_free_icount(ext2_icount_t icount);
726 extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags,
727 unsigned int size,
728 ext2_icount_t hint, ext2_icount_t *ret);
729 extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags,
730 unsigned int size,
731 ext2_icount_t *ret);
732 extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ext2_ino_t ino,
733 __u16 *ret);
734 extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ext2_ino_t ino,
735 __u16 *ret);
736 extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ext2_ino_t ino,
737 __u16 *ret);
738 extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ext2_ino_t ino,
739 __u16 count);
740 extern ext2_ino_t ext2fs_get_icount_size(ext2_icount_t icount);
741 errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *);
742
743 /* inode.c */
744 extern errcode_t ext2fs_flush_icache(ext2_filsys fs);
745 extern errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan,
746 ext2_ino_t *ino,
747 struct ext2_inode *inode,
748 int bufsize);
749 extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks,
750 ext2_inode_scan *ret_scan);
751 extern void ext2fs_close_inode_scan(ext2_inode_scan scan);
752 extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino,
753 struct ext2_inode *inode);
754 extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan,
755 int group);
756 extern void ext2fs_set_inode_callback
757 (ext2_inode_scan scan,
758 errcode_t (*done_group)(ext2_filsys fs,
759 dgrp_t group,
760 void * priv_data),
761 void *done_group_data);
762 extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags,
763 int clear_flags);
764 extern errcode_t ext2fs_read_inode_full(ext2_filsys fs, ext2_ino_t ino,
765 struct ext2_inode * inode,
766 int bufsize);
767 extern errcode_t ext2fs_read_inode (ext2_filsys fs, ext2_ino_t ino,
768 struct ext2_inode * inode);
769 extern errcode_t ext2fs_write_inode_full(ext2_filsys fs, ext2_ino_t ino,
770 struct ext2_inode * inode,
771 int bufsize);
772 extern errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino,
773 struct ext2_inode * inode);
774 extern errcode_t ext2fs_write_new_inode(ext2_filsys fs, ext2_ino_t ino,
775 struct ext2_inode * inode);
776 extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks);
777 extern errcode_t ext2fs_check_directory(ext2_filsys fs, ext2_ino_t ino);
778
779 /* inode_io.c */
780 extern io_manager inode_io_manager;
781 extern errcode_t ext2fs_inode_io_intern(ext2_filsys fs, ext2_ino_t ino,
782 char **name);
783 extern errcode_t ext2fs_inode_io_intern2(ext2_filsys fs, ext2_ino_t ino,
784 struct ext2_inode *inode,
785 char **name);
786
787 /* ismounted.c */
788 extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags);
789 extern errcode_t ext2fs_check_mount_point(const char *device, int *mount_flags,
790 char *mtpt, int mtlen);
791
792 /* namei.c */
793 extern errcode_t ext2fs_lookup(ext2_filsys fs, ext2_ino_t dir, const char *name,
794 int namelen, char *buf, ext2_ino_t *inode);
795 extern errcode_t ext2fs_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
796 const char *name, ext2_ino_t *inode);
797 errcode_t ext2fs_namei_follow(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
798 const char *name, ext2_ino_t *inode);
799 extern errcode_t ext2fs_follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
800 ext2_ino_t inode, ext2_ino_t *res_inode);
801
802 /* native.c */
803 int ext2fs_native_flag(void);
804
805 /* newdir.c */
806 extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino,
807 ext2_ino_t parent_ino, char **block);
808
809 /* mkdir.c */
810 extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum,
811 const char *name);
812
813 /* mkjournal.c */
814 extern errcode_t ext2fs_create_journal_superblock(ext2_filsys fs,
815 __u32 size, int flags,
816 char **ret_jsb);
817 extern errcode_t ext2fs_add_journal_device(ext2_filsys fs,
818 ext2_filsys journal_dev);
819 extern errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t size,
820 int flags);
821
822 /* openfs.c */
823 extern errcode_t ext2fs_open(const char *name, int flags, int superblock,
824 unsigned int block_size, io_manager manager,
825 ext2_filsys *ret_fs);
826 extern errcode_t ext2fs_open2(const char *name, const char *io_options,
827 int flags, int superblock,
828 unsigned int block_size, io_manager manager,
829 ext2_filsys *ret_fs);
830 extern blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block,
831 dgrp_t i);
832 errcode_t ext2fs_get_data_io(ext2_filsys fs, io_channel *old_io);
833 errcode_t ext2fs_set_data_io(ext2_filsys fs, io_channel new_io);
834 errcode_t ext2fs_rewrite_to_io(ext2_filsys fs, io_channel new_io);
835
836 /* get_pathname.c */
837 extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino,
838 char **name);
839
840 /* link.c */
841 errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name,
842 ext2_ino_t ino, int flags);
843 errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir, const char *name,
844 ext2_ino_t ino, int flags);
845
846 /* read_bb.c */
847 extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs,
848 ext2_badblocks_list *bb_list);
849
850 /* read_bb_file.c */
851 extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f,
852 ext2_badblocks_list *bb_list,
853 void *priv_data,
854 void (*invalid)(ext2_filsys fs,
855 blk_t blk,
856 char *badstr,
857 void *priv_data));
858 extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f,
859 ext2_badblocks_list *bb_list,
860 void (*invalid)(ext2_filsys fs,
861 blk_t blk));
862
863 /* res_gdt.c */
864 extern errcode_t ext2fs_create_resize_inode(ext2_filsys fs);
865
866 /* rs_bitmap.c */
867 extern errcode_t ext2fs_resize_generic_bitmap(__u32 new_end,
868 __u32 new_real_end,
869 ext2fs_generic_bitmap bmap);
870 extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end,
871 ext2fs_inode_bitmap bmap);
872 extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end,
873 ext2fs_block_bitmap bmap);
874 extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src,
875 ext2fs_generic_bitmap *dest);
876
877 /* swapfs.c */
878 extern void ext2fs_swap_ext_attr(char *to, char *from, int bufsize,
879 int has_header);
880 extern void ext2fs_swap_super(struct ext2_super_block * super);
881 extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp);
882 extern void ext2fs_swap_inode_full(ext2_filsys fs, struct ext2_inode_large *t,
883 struct ext2_inode_large *f, int hostorder,
884 int bufsize);
885 extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t,
886 struct ext2_inode *f, int hostorder);
887
888 /* valid_blk.c */
889 extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode);
890
891 /* version.c */
892 extern int ext2fs_parse_version_string(const char *ver_string);
893 extern int ext2fs_get_library_version(const char **ver_string,
894 const char **date_string);
895
896 /* write_bb_file.c */
897 extern errcode_t ext2fs_write_bb_FILE(ext2_badblocks_list bb_list,
898 unsigned int flags,
899 FILE *f);
900
901
902 /* inline functions */
903 extern errcode_t ext2fs_get_mem(unsigned long size, void *ptr);
904 extern errcode_t ext2fs_free_mem(void *ptr);
905 extern errcode_t ext2fs_resize_mem(unsigned long old_size,
906 unsigned long size, void *ptr);
907 extern void ext2fs_mark_super_dirty(ext2_filsys fs);
908 extern void ext2fs_mark_changed(ext2_filsys fs);
909 extern int ext2fs_test_changed(ext2_filsys fs);
910 extern void ext2fs_mark_valid(ext2_filsys fs);
911 extern void ext2fs_unmark_valid(ext2_filsys fs);
912 extern int ext2fs_test_valid(ext2_filsys fs);
913 extern void ext2fs_mark_ib_dirty(ext2_filsys fs);
914 extern void ext2fs_mark_bb_dirty(ext2_filsys fs);
915 extern int ext2fs_test_ib_dirty(ext2_filsys fs);
916 extern int ext2fs_test_bb_dirty(ext2_filsys fs);
917 extern int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk);
918 extern int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino);
919 extern blk_t ext2fs_inode_data_blocks(ext2_filsys fs,
920 struct ext2_inode *inode);
921
922 #ifdef __cplusplus
923 }
924 #endif
925
926 #endif
Tomato firmware and modifications.