]> git.ipfire.org Git - thirdparty/e2fsprogs.git/blob - lib/ext2fs/ext2fs.h
projects / thirdparty / e2fsprogs.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Merge branch 'maint' into next
[thirdparty/e2fsprogs.git] / lib / ext2fs / ext2fs.h
1 /*
2 * ext2fs.h --- ext2fs
3 *
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 Library
8 * General Public License, version 2.
9 * %End-Header%
10 */
11
12 #ifndef _EXT2FS_EXT2FS_H
13 #define _EXT2FS_EXT2FS_H
14
15 #ifdef __GNUC__
16 #define EXT2FS_ATTR(x) __attribute__(x)
17 #else
18 #define EXT2FS_ATTR(x)
19 #endif
20
21 #ifdef __cplusplus
22 extern "C" {
23 #endif
24
25 /*
26 * Non-GNU C compilers won't necessarily understand inline
27 */
28 #if (!defined(__GNUC__) && !defined(__WATCOMC__))
29 #define NO_INLINE_FUNCS
30 #endif
31
32 /*
33 * Where the master copy of the superblock is located, and how big
34 * superblocks are supposed to be. We define SUPERBLOCK_SIZE because
35 * the size of the superblock structure is not necessarily trustworthy
36 * (some versions have the padding set up so that the superblock is
37 * 1032 bytes long).
38 */
39 #define SUPERBLOCK_OFFSET 1024
40 #define SUPERBLOCK_SIZE 1024
41
42 /*
43 * The last ext2fs revision level that this version of the library is
44 * able to support.
45 */
46 #define EXT2_LIB_CURRENT_REV EXT2_DYNAMIC_REV
47
48 #ifdef HAVE_SYS_TYPES_H
49 #include <sys/types.h>
50 #endif
51
52 #include <stdio.h>
53 #include <stdlib.h>
54 #include <string.h>
55 #include <errno.h>
56
57 #if EXT2_FLAT_INCLUDES
58 #include "e2_types.h"
59 #include "ext2_fs.h"
60 #include "ext3_extents.h"
61 #else
62 #include <ext2fs/ext2_types.h>
63 #include <ext2fs/ext2_fs.h>
64 #include <ext2fs/ext3_extents.h>
65 #endif /* EXT2_FLAT_INCLUDES */
66
67 #ifdef __CHECK_ENDIAN__
68 #define __bitwise __attribute__((bitwise))
69 #else
70 #define __bitwise
71 #endif
72
73 typedef __u32 __bitwise ext2_ino_t;
74 typedef __u32 __bitwise blk_t;
75 typedef __u64 __bitwise blk64_t;
76 typedef __u32 __bitwise dgrp_t;
77 typedef __u32 __bitwise ext2_off_t;
78 typedef __u64 __bitwise ext2_off64_t;
79 typedef __s64 __bitwise e2_blkcnt_t;
80 typedef __u32 __bitwise ext2_dirhash_t;
81
82 #if EXT2_FLAT_INCLUDES
83 #include "com_err.h"
84 #include "ext2_io.h"
85 #include "ext2_err.h"
86 #include "ext2_ext_attr.h"
87 #else
88 #include <et/com_err.h>
89 #include <ext2fs/ext2_io.h>
90 #include <ext2fs/ext2_err.h>
91 #include <ext2fs/ext2_ext_attr.h>
92 #endif
93
94 /*
95 * Portability help for Microsoft Visual C++
96 */
97 #ifdef _MSC_VER
98 #define EXT2_QSORT_TYPE int __cdecl
99 #else
100 #define EXT2_QSORT_TYPE int
101 #endif
102
103 typedef struct struct_ext2_filsys *ext2_filsys;
104
105 #define EXT2FS_MARK_ERROR 0
106 #define EXT2FS_UNMARK_ERROR 1
107 #define EXT2FS_TEST_ERROR 2
108
109 typedef struct ext2fs_struct_generic_bitmap *ext2fs_generic_bitmap;
110 typedef struct ext2fs_struct_generic_bitmap *ext2fs_inode_bitmap;
111 typedef struct ext2fs_struct_generic_bitmap *ext2fs_block_bitmap;
112
113 #define EXT2_FIRST_INODE(s) EXT2_FIRST_INO(s)
114
115
116 /*
117 * Badblocks list definitions
118 */
119
120 typedef struct ext2_struct_u32_list *ext2_badblocks_list;
121 typedef struct ext2_struct_u32_iterate *ext2_badblocks_iterate;
122
123 typedef struct ext2_struct_u32_list *ext2_u32_list;
124 typedef struct ext2_struct_u32_iterate *ext2_u32_iterate;
125
126 /* old */
127 typedef struct ext2_struct_u32_list *badblocks_list;
128 typedef struct ext2_struct_u32_iterate *badblocks_iterate;
129
130 #define BADBLOCKS_FLAG_DIRTY 1
131
132 /*
133 * ext2_dblist structure and abstractions (see dblist.c)
134 */
135 struct ext2_db_entry2 {
136 ext2_ino_t ino;
137 blk64_t blk;
138 e2_blkcnt_t blockcnt;
139 };
140
141 /* Ye Olde 32-bit version */
142 struct ext2_db_entry {
143 ext2_ino_t ino;
144 blk_t blk;
145 int blockcnt;
146 };
147
148 typedef struct ext2_struct_dblist *ext2_dblist;
149
150 #define DBLIST_ABORT 1
151
152 /*
153 * ext2_fileio definitions
154 */
155
156 #define EXT2_FILE_WRITE 0x0001
157 #define EXT2_FILE_CREATE 0x0002
158
159 #define EXT2_FILE_MASK 0x00FF
160
161 #define EXT2_FILE_BUF_DIRTY 0x4000
162 #define EXT2_FILE_BUF_VALID 0x2000
163
164 typedef struct ext2_file *ext2_file_t;
165
166 #define EXT2_SEEK_SET 0
167 #define EXT2_SEEK_CUR 1
168 #define EXT2_SEEK_END 2
169
170 /*
171 * Flags for the ext2_filsys structure and for ext2fs_open()
172 */
173 #define EXT2_FLAG_RW 0x01
174 #define EXT2_FLAG_CHANGED 0x02
175 #define EXT2_FLAG_DIRTY 0x04
176 #define EXT2_FLAG_VALID 0x08
177 #define EXT2_FLAG_IB_DIRTY 0x10
178 #define EXT2_FLAG_BB_DIRTY 0x20
179 #define EXT2_FLAG_SWAP_BYTES 0x40
180 #define EXT2_FLAG_SWAP_BYTES_READ 0x80
181 #define EXT2_FLAG_SWAP_BYTES_WRITE 0x100
182 #define EXT2_FLAG_MASTER_SB_ONLY 0x200
183 #define EXT2_FLAG_FORCE 0x400
184 #define EXT2_FLAG_SUPER_ONLY 0x800
185 #define EXT2_FLAG_JOURNAL_DEV_OK 0x1000
186 #define EXT2_FLAG_IMAGE_FILE 0x2000
187 #define EXT2_FLAG_EXCLUSIVE 0x4000
188 #define EXT2_FLAG_SOFTSUPP_FEATURES 0x8000
189 #define EXT2_FLAG_NOFREE_ON_ERROR 0x10000
190 #define EXT2_FLAG_64BITS 0x20000
191 #define EXT2_FLAG_PRINT_PROGRESS 0x40000
192 #define EXT2_FLAG_DIRECT_IO 0x80000
193 #define EXT2_FLAG_SKIP_MMP 0x100000
194 #define EXT2_FLAG_IGNORE_CSUM_ERRORS 0x200000
195
196 /*
197 * Special flag in the ext2 inode i_flag field that means that this is
198 * a new inode. (So that ext2_write_inode() can clear extra fields.)
199 */
200 #define EXT2_NEW_INODE_FL 0x80000000
201
202 /*
203 * Flags for mkjournal
204 */
205 #define EXT2_MKJOURNAL_V1_SUPER 0x0000001 /* create V1 superblock (deprecated) */
206 #define EXT2_MKJOURNAL_LAZYINIT 0x0000002 /* don't zero journal inode before use*/
207 #define EXT2_MKJOURNAL_NO_MNT_CHECK 0x0000004 /* don't check mount status */
208
209 struct opaque_ext2_group_desc;
210
211 struct struct_ext2_filsys {
212 errcode_t magic;
213 io_channel io;
214 int flags;
215 char * device_name;
216 struct ext2_super_block * super;
217 unsigned int blocksize;
218 int fragsize;
219 dgrp_t group_desc_count;
220 unsigned long desc_blocks;
221 struct opaque_ext2_group_desc * group_desc;
222 unsigned int inode_blocks_per_group;
223 ext2fs_inode_bitmap inode_map;
224 ext2fs_block_bitmap block_map;
225 /* XXX FIXME-64: not 64-bit safe, but not used? */
226 errcode_t (*get_blocks)(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks);
227 errcode_t (*check_directory)(ext2_filsys fs, ext2_ino_t ino);
228 errcode_t (*write_bitmaps)(ext2_filsys fs);
229 errcode_t (*read_inode)(ext2_filsys fs, ext2_ino_t ino,
230 struct ext2_inode *inode);
231 errcode_t (*write_inode)(ext2_filsys fs, ext2_ino_t ino,
232 struct ext2_inode *inode);
233 ext2_badblocks_list badblocks;
234 ext2_dblist dblist;
235 __u32 stride; /* for mke2fs */
236 struct ext2_super_block * orig_super;
237 struct ext2_image_hdr * image_header;
238 __u32 umask;
239 time_t now;
240 int cluster_ratio_bits;
241 __u16 default_bitmap_type;
242 __u16 pad;
243 /*
244 * Reserved for future expansion
245 */
246 __u32 reserved[5];
247
248 /*
249 * Reserved for the use of the calling application.
250 */
251 void * priv_data;
252
253 /*
254 * Inode cache
255 */
256 struct ext2_inode_cache *icache;
257 io_channel image_io;
258
259 /*
260 * More callback functions
261 */
262 errcode_t (*get_alloc_block)(ext2_filsys fs, blk64_t goal,
263 blk64_t *ret);
264 void (*block_alloc_stats)(ext2_filsys fs, blk64_t blk, int inuse);
265
266 /*
267 * Buffers for Multiple mount protection(MMP) block.
268 */
269 void *mmp_buf;
270 void *mmp_cmp;
271 int mmp_fd;
272
273 /*
274 * Time at which e2fsck last updated the MMP block.
275 */
276 long mmp_last_written;
277
278 /* progress operation functions */
279 struct ext2fs_progress_ops *progress_ops;
280
281 /* Precomputed FS UUID checksum for seeding other checksums */
282 __u32 csum_seed;
283 };
284
285 #if EXT2_FLAT_INCLUDES
286 #include "e2_bitops.h"
287 #else
288 #include <ext2fs/bitops.h>
289 #endif
290
291 /*
292 * 64-bit bitmap backend types
293 */
294 #define EXT2FS_BMAP64_BITARRAY 1
295 #define EXT2FS_BMAP64_RBTREE 2
296 #define EXT2FS_BMAP64_AUTODIR 3
297
298 /*
299 * Return flags for the block iterator functions
300 */
301 #define BLOCK_CHANGED 1
302 #define BLOCK_ABORT 2
303 #define BLOCK_ERROR 4
304
305 /*
306 * Block interate flags
307 *
308 * BLOCK_FLAG_APPEND, or BLOCK_FLAG_HOLE, indicates that the interator
309 * function should be called on blocks where the block number is zero.
310 * This is used by ext2fs_expand_dir() to be able to add a new block
311 * to an inode. It can also be used for programs that want to be able
312 * to deal with files that contain "holes".
313 *
314 * BLOCK_FLAG_DEPTH_TRAVERSE indicates that the iterator function for
315 * the indirect, doubly indirect, etc. blocks should be called after
316 * all of the blocks containined in the indirect blocks are processed.
317 * This is useful if you are going to be deallocating blocks from an
318 * inode.
319 *
320 * BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be
321 * called for data blocks only.
322 *
323 * BLOCK_FLAG_READ_ONLY is a promise by the caller that it will not
324 * modify returned block number.
325 *
326 * BLOCK_FLAG_NO_LARGE is for internal use only. It informs
327 * ext2fs_block_iterate2 that large files won't be accepted.
328 */
329 #define BLOCK_FLAG_APPEND 1
330 #define BLOCK_FLAG_HOLE 1
331 #define BLOCK_FLAG_DEPTH_TRAVERSE 2
332 #define BLOCK_FLAG_DATA_ONLY 4
333 #define BLOCK_FLAG_READ_ONLY 8
334
335 #define BLOCK_FLAG_NO_LARGE 0x1000
336
337 /*
338 * Magic "block count" return values for the block iterator function.
339 */
340 #define BLOCK_COUNT_IND (-1)
341 #define BLOCK_COUNT_DIND (-2)
342 #define BLOCK_COUNT_TIND (-3)
343 #define BLOCK_COUNT_TRANSLATOR (-4)
344
345 #if 0
346 /*
347 * Flags for ext2fs_move_blocks
348 */
349 #define EXT2_BMOVE_GET_DBLIST 0x0001
350 #define EXT2_BMOVE_DEBUG 0x0002
351 #endif
352
353 /*
354 * Generic (non-filesystem layout specific) extents structure
355 */
356
357 #define EXT2_EXTENT_FLAGS_LEAF 0x0001
358 #define EXT2_EXTENT_FLAGS_UNINIT 0x0002
359 #define EXT2_EXTENT_FLAGS_SECOND_VISIT 0x0004
360
361 struct ext2fs_extent {
362 blk64_t e_pblk; /* first physical block */
363 blk64_t e_lblk; /* first logical block extent covers */
364 __u32 e_len; /* number of blocks covered by extent */
365 __u32 e_flags; /* extent flags */
366 };
367
368 typedef struct ext2_extent_handle *ext2_extent_handle_t;
369 typedef struct ext2_extent_path *ext2_extent_path_t;
370
371 /*
372 * Flags used by ext2fs_extent_get()
373 */
374 #define EXT2_EXTENT_CURRENT 0x0000
375 #define EXT2_EXTENT_MOVE_MASK 0x000F
376 #define EXT2_EXTENT_ROOT 0x0001
377 #define EXT2_EXTENT_LAST_LEAF 0x0002
378 #define EXT2_EXTENT_FIRST_SIB 0x0003
379 #define EXT2_EXTENT_LAST_SIB 0x0004
380 #define EXT2_EXTENT_NEXT_SIB 0x0005
381 #define EXT2_EXTENT_PREV_SIB 0x0006
382 #define EXT2_EXTENT_NEXT_LEAF 0x0007
383 #define EXT2_EXTENT_PREV_LEAF 0x0008
384 #define EXT2_EXTENT_NEXT 0x0009
385 #define EXT2_EXTENT_PREV 0x000A
386 #define EXT2_EXTENT_UP 0x000B
387 #define EXT2_EXTENT_DOWN 0x000C
388 #define EXT2_EXTENT_DOWN_AND_LAST 0x000D
389
390 /*
391 * Flags used by ext2fs_extent_insert()
392 */
393 #define EXT2_EXTENT_INSERT_AFTER 0x0001 /* insert after handle loc'n */
394 #define EXT2_EXTENT_INSERT_NOSPLIT 0x0002 /* insert may not cause split */
395
396 /*
397 * Flags used by ext2fs_extent_delete()
398 */
399 #define EXT2_EXTENT_DELETE_KEEP_EMPTY 0x001 /* keep node if last extnt gone */
400
401 /*
402 * Flags used by ext2fs_extent_set_bmap()
403 */
404 #define EXT2_EXTENT_SET_BMAP_UNINIT 0x0001
405
406 /*
407 * Data structure returned by ext2fs_extent_get_info()
408 */
409 struct ext2_extent_info {
410 int curr_entry;
411 int curr_level;
412 int num_entries;
413 int max_entries;
414 int max_depth;
415 int bytes_avail;
416 blk64_t max_lblk;
417 blk64_t max_pblk;
418 __u32 max_len;
419 __u32 max_uninit_len;
420 };
421
422 /*
423 * Flags for directory block reading and writing functions
424 */
425 #define EXT2_DIRBLOCK_V2_STRUCT 0x0001
426
427 /*
428 * Return flags for the directory iterator functions
429 */
430 #define DIRENT_CHANGED 1
431 #define DIRENT_ABORT 2
432 #define DIRENT_ERROR 3
433
434 /*
435 * Directory iterator flags
436 */
437
438 #define DIRENT_FLAG_INCLUDE_EMPTY 1
439 #define DIRENT_FLAG_INCLUDE_REMOVED 2
440 #define DIRENT_FLAG_INCLUDE_CSUM 4
441
442 #define DIRENT_DOT_FILE 1
443 #define DIRENT_DOT_DOT_FILE 2
444 #define DIRENT_OTHER_FILE 3
445 #define DIRENT_DELETED_FILE 4
446 #define DIRENT_CHECKSUM 5
447
448 /*
449 * Inode scan definitions
450 */
451 typedef struct ext2_struct_inode_scan *ext2_inode_scan;
452
453 /*
454 * ext2fs_scan flags
455 */
456 #define EXT2_SF_CHK_BADBLOCKS 0x0001
457 #define EXT2_SF_BAD_INODE_BLK 0x0002
458 #define EXT2_SF_BAD_EXTRA_BYTES 0x0004
459 #define EXT2_SF_SKIP_MISSING_ITABLE 0x0008
460 #define EXT2_SF_DO_LAZY 0x0010
461
462 /*
463 * ext2fs_check_if_mounted flags
464 */
465 #define EXT2_MF_MOUNTED 1
466 #define EXT2_MF_ISROOT 2
467 #define EXT2_MF_READONLY 4
468 #define EXT2_MF_SWAP 8
469 #define EXT2_MF_BUSY 16
470
471 /*
472 * Ext2/linux mode flags. We define them here so that we don't need
473 * to depend on the OS's sys/stat.h, since we may be compiling on a
474 * non-Linux system.
475 */
476 #define LINUX_S_IFMT 00170000
477 #define LINUX_S_IFSOCK 0140000
478 #define LINUX_S_IFLNK 0120000
479 #define LINUX_S_IFREG 0100000
480 #define LINUX_S_IFBLK 0060000
481 #define LINUX_S_IFDIR 0040000
482 #define LINUX_S_IFCHR 0020000
483 #define LINUX_S_IFIFO 0010000
484 #define LINUX_S_ISUID 0004000
485 #define LINUX_S_ISGID 0002000
486 #define LINUX_S_ISVTX 0001000
487
488 #define LINUX_S_IRWXU 00700
489 #define LINUX_S_IRUSR 00400
490 #define LINUX_S_IWUSR 00200
491 #define LINUX_S_IXUSR 00100
492
493 #define LINUX_S_IRWXG 00070
494 #define LINUX_S_IRGRP 00040
495 #define LINUX_S_IWGRP 00020
496 #define LINUX_S_IXGRP 00010
497
498 #define LINUX_S_IRWXO 00007
499 #define LINUX_S_IROTH 00004
500 #define LINUX_S_IWOTH 00002
501 #define LINUX_S_IXOTH 00001
502
503 #define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK)
504 #define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG)
505 #define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR)
506 #define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR)
507 #define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK)
508 #define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO)
509 #define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK)
510
511 /*
512 * ext2 size of an inode
513 */
514 #define EXT2_I_SIZE(i) ((i)->i_size | ((__u64) (i)->i_size_high << 32))
515
516 /*
517 * ext2_icount_t abstraction
518 */
519 #define EXT2_ICOUNT_OPT_INCREMENT 0x01
520
521 typedef struct ext2_icount *ext2_icount_t;
522
523 /*
524 * Flags for ext2fs_bmap
525 */
526 #define BMAP_ALLOC 0x0001
527 #define BMAP_SET 0x0002
528
529 /*
530 * Returned flags from ext2fs_bmap
531 */
532 #define BMAP_RET_UNINIT 0x0001
533
534 /*
535 * Flags for imager.c functions
536 */
537 #define IMAGER_FLAG_INODEMAP 1
538 #define IMAGER_FLAG_SPARSEWRITE 2
539
540 /*
541 * For checking structure magic numbers...
542 */
543
544 #define EXT2_CHECK_MAGIC(struct, code) \
545 if ((struct)->magic != (code)) return (code)
546
547
548 /*
549 * For ext2 compression support
550 */
551 #define EXT2FS_COMPRESSED_BLKADDR ((blk_t) -1)
552 #define HOLE_BLKADDR(_b) ((_b) == 0 || (_b) == EXT2FS_COMPRESSED_BLKADDR)
553
554 /*
555 * Features supported by this version of the library
556 */
557 #define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\
558 EXT2_FEATURE_COMPAT_IMAGIC_INODES|\
559 EXT3_FEATURE_COMPAT_HAS_JOURNAL|\
560 EXT2_FEATURE_COMPAT_RESIZE_INODE|\
561 EXT2_FEATURE_COMPAT_DIR_INDEX|\
562 EXT2_FEATURE_COMPAT_EXT_ATTR)
563
564 /* This #ifdef is temporary until compression is fully supported */
565 #ifdef ENABLE_COMPRESSION
566 #ifndef I_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL
567 /* If the below warning bugs you, then have
568 `CPPFLAGS=-DI_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL' in your
569 environment at configure time. */
570 #warning "Compression support is experimental"
571 #endif
572 #define EXT2_LIB_INCOMPAT_COMPRESSION EXT2_FEATURE_INCOMPAT_COMPRESSION
573 #else
574 #define EXT2_LIB_INCOMPAT_COMPRESSION (0)
575 #endif
576
577 #ifdef CONFIG_MMP
578 #define EXT4_LIB_INCOMPAT_MMP EXT4_FEATURE_INCOMPAT_MMP
579 #else
580 #define EXT4_LIB_INCOMPAT_MMP (0)
581 #endif
582
583 #ifdef CONFIG_QUOTA
584 #define EXT4_LIB_RO_COMPAT_QUOTA EXT4_FEATURE_RO_COMPAT_QUOTA
585 #else
586 #define EXT4_LIB_RO_COMPAT_QUOTA (0)
587 #endif
588
589 #define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\
590 EXT2_LIB_INCOMPAT_COMPRESSION|\
591 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\
592 EXT2_FEATURE_INCOMPAT_META_BG|\
593 EXT3_FEATURE_INCOMPAT_RECOVER|\
594 EXT3_FEATURE_INCOMPAT_EXTENTS|\
595 EXT4_FEATURE_INCOMPAT_FLEX_BG|\
596 EXT4_LIB_INCOMPAT_MMP|\
597 EXT4_FEATURE_INCOMPAT_64BIT)
598
599 #define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\
600 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|\
601 EXT2_FEATURE_RO_COMPAT_LARGE_FILE|\
602 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|\
603 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|\
604 EXT4_FEATURE_RO_COMPAT_GDT_CSUM|\
605 EXT4_FEATURE_RO_COMPAT_BIGALLOC|\
606 EXT4_LIB_RO_COMPAT_QUOTA|\
607 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)
608
609 /*
610 * These features are only allowed if EXT2_FLAG_SOFTSUPP_FEATURES is passed
611 * to ext2fs_openfs()
612 */
613 #define EXT2_LIB_SOFTSUPP_INCOMPAT (0)
614 #define EXT2_LIB_SOFTSUPP_RO_COMPAT (EXT4_FEATURE_RO_COMPAT_REPLICA)
615
616
617 /* Translate a block number to a cluster number */
618 #define EXT2FS_CLUSTER_RATIO(fs) (1 << (fs)->cluster_ratio_bits)
619 #define EXT2FS_CLUSTER_MASK(fs) (EXT2FS_CLUSTER_RATIO(fs) - 1)
620 #define EXT2FS_B2C(fs, blk) ((blk) >> (fs)->cluster_ratio_bits)
621 /* Translate a cluster number to a block number */
622 #define EXT2FS_C2B(fs, cluster) ((cluster) << (fs)->cluster_ratio_bits)
623 /* Translate # of blks to # of clusters */
624 #define EXT2FS_NUM_B2C(fs, blks) (((blks) + EXT2FS_CLUSTER_MASK(fs)) >> \
625 (fs)->cluster_ratio_bits)
626
627 #if defined(HAVE_FSTAT64) && !defined(__OSX_AVAILABLE_BUT_DEPRECATED)
628 typedef struct stat64 ext2fs_struct_stat;
629 #else
630 typedef struct stat ext2fs_struct_stat;
631 #endif
632
633 /*
634 * For ext2fs_close2() and ext2fs_flush2(), this flag allows you to
635 * avoid the fsync call.
636 */
637 #define EXT2_FLAG_FLUSH_NO_SYNC 1
638
639 /*
640 * function prototypes
641 */
642 static inline int ext2fs_has_group_desc_csum(ext2_filsys fs)
643 {
644 return EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
645 EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
646 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM);
647 }
648
649 /* alloc.c */
650 extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode,
651 ext2fs_inode_bitmap map, ext2_ino_t *ret);
652 extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal,
653 ext2fs_block_bitmap map, blk_t *ret);
654 extern errcode_t ext2fs_new_block2(ext2_filsys fs, blk64_t goal,
655 ext2fs_block_bitmap map, blk64_t *ret);
656 extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start,
657 blk_t finish, int num,
658 ext2fs_block_bitmap map,
659 blk_t *ret);
660 extern errcode_t ext2fs_get_free_blocks2(ext2_filsys fs, blk64_t start,
661 blk64_t finish, int num,
662 ext2fs_block_bitmap map,
663 blk64_t *ret);
664 extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal,
665 char *block_buf, blk_t *ret);
666 extern errcode_t ext2fs_alloc_block2(ext2_filsys fs, blk64_t goal,
667 char *block_buf, blk64_t *ret);
668 extern void ext2fs_set_alloc_block_callback(ext2_filsys fs,
669 errcode_t (*func)(ext2_filsys fs,
670 blk64_t goal,
671 blk64_t *ret),
672 errcode_t (**old)(ext2_filsys fs,
673 blk64_t goal,
674 blk64_t *ret));
675
676 /* alloc_sb.c */
677 extern int ext2fs_reserve_super_and_bgd(ext2_filsys fs,
678 dgrp_t group,
679 ext2fs_block_bitmap bmap);
680 extern void ext2fs_set_block_alloc_stats_callback(ext2_filsys fs,
681 void (*func)(ext2_filsys fs,
682 blk64_t blk,
683 int inuse),
684 void (**old)(ext2_filsys fs,
685 blk64_t blk,
686 int inuse));
687
688 /* alloc_stats.c */
689 void ext2fs_inode_alloc_stats(ext2_filsys fs, ext2_ino_t ino, int inuse);
690 void ext2fs_inode_alloc_stats2(ext2_filsys fs, ext2_ino_t ino,
691 int inuse, int isdir);
692 void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse);
693 void ext2fs_block_alloc_stats2(ext2_filsys fs, blk64_t blk, int inuse);
694
695 /* alloc_tables.c */
696 extern errcode_t ext2fs_allocate_tables(ext2_filsys fs);
697 extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group,
698 ext2fs_block_bitmap bmap);
699
700 /* badblocks.c */
701 extern errcode_t ext2fs_u32_list_create(ext2_u32_list *ret, int size);
702 extern errcode_t ext2fs_u32_list_add(ext2_u32_list bb, __u32 blk);
703 extern int ext2fs_u32_list_find(ext2_u32_list bb, __u32 blk);
704 extern int ext2fs_u32_list_test(ext2_u32_list bb, blk_t blk);
705 extern errcode_t ext2fs_u32_list_iterate_begin(ext2_u32_list bb,
706 ext2_u32_iterate *ret);
707 extern int ext2fs_u32_list_iterate(ext2_u32_iterate iter, blk_t *blk);
708 extern void ext2fs_u32_list_iterate_end(ext2_u32_iterate iter);
709 extern errcode_t ext2fs_u32_copy(ext2_u32_list src, ext2_u32_list *dest);
710 extern int ext2fs_u32_list_equal(ext2_u32_list bb1, ext2_u32_list bb2);
711
712 extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret,
713 int size);
714 extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb,
715 blk_t blk);
716 extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb,
717 blk_t blk);
718 extern int ext2fs_u32_list_del(ext2_u32_list bb, __u32 blk);
719 extern void ext2fs_badblocks_list_del(ext2_u32_list bb, __u32 blk);
720 extern errcode_t
721 ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb,
722 ext2_badblocks_iterate *ret);
723 extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter,
724 blk_t *blk);
725 extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter);
726 extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src,
727 ext2_badblocks_list *dest);
728 extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1,
729 ext2_badblocks_list bb2);
730 extern int ext2fs_u32_list_count(ext2_u32_list bb);
731
732 /* bb_compat */
733 extern errcode_t badblocks_list_create(badblocks_list *ret, int size);
734 extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk);
735 extern int badblocks_list_test(badblocks_list bb, blk_t blk);
736 extern errcode_t badblocks_list_iterate_begin(badblocks_list bb,
737 badblocks_iterate *ret);
738 extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk);
739 extern void badblocks_list_iterate_end(badblocks_iterate iter);
740 extern void badblocks_list_free(badblocks_list bb);
741
742 /* bb_inode.c */
743 extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs,
744 ext2_badblocks_list bb_list);
745
746 /* bitmaps.c */
747 extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap);
748 extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap);
749 extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src,
750 ext2fs_generic_bitmap *dest);
751 extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs);
752 extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs);
753 extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs);
754 extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs);
755 extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs,
756 const char *descr,
757 ext2fs_block_bitmap *ret);
758 extern errcode_t ext2fs_allocate_subcluster_bitmap(ext2_filsys fs,
759 const char *descr,
760 ext2fs_block_bitmap *ret);
761 extern int ext2fs_get_bitmap_granularity(ext2fs_block_bitmap bitmap);
762 extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs,
763 const char *descr,
764 ext2fs_inode_bitmap *ret);
765 extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap,
766 ext2_ino_t end, ext2_ino_t *oend);
767 extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap,
768 blk_t end, blk_t *oend);
769 extern errcode_t ext2fs_fudge_block_bitmap_end2(ext2fs_block_bitmap bitmap,
770 blk64_t end, blk64_t *oend);
771 extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap);
772 extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap);
773 extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs);
774 extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs);
775 extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end,
776 ext2fs_inode_bitmap bmap);
777 extern errcode_t ext2fs_resize_inode_bitmap2(__u64 new_end,
778 __u64 new_real_end,
779 ext2fs_inode_bitmap bmap);
780 extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end,
781 ext2fs_block_bitmap bmap);
782 extern errcode_t ext2fs_resize_block_bitmap2(__u64 new_end,
783 __u64 new_real_end,
784 ext2fs_block_bitmap bmap);
785 extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1,
786 ext2fs_block_bitmap bm2);
787 extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1,
788 ext2fs_inode_bitmap bm2);
789 extern errcode_t ext2fs_set_inode_bitmap_range(ext2fs_inode_bitmap bmap,
790 ext2_ino_t start, unsigned int num,
791 void *in);
792 extern errcode_t ext2fs_set_inode_bitmap_range2(ext2fs_inode_bitmap bmap,
793 __u64 start, size_t num,
794 void *in);
795 extern errcode_t ext2fs_get_inode_bitmap_range(ext2fs_inode_bitmap bmap,
796 ext2_ino_t start, unsigned int num,
797 void *out);
798 extern errcode_t ext2fs_get_inode_bitmap_range2(ext2fs_inode_bitmap bmap,
799 __u64 start, size_t num,
800 void *out);
801 extern errcode_t ext2fs_set_block_bitmap_range(ext2fs_block_bitmap bmap,
802 blk_t start, unsigned int num,
803 void *in);
804 extern errcode_t ext2fs_set_block_bitmap_range2(ext2fs_block_bitmap bmap,
805 blk64_t start, size_t num,
806 void *in);
807 extern errcode_t ext2fs_get_block_bitmap_range(ext2fs_block_bitmap bmap,
808 blk_t start, unsigned int num,
809 void *out);
810 extern errcode_t ext2fs_get_block_bitmap_range2(ext2fs_block_bitmap bmap,
811 blk64_t start, size_t num,
812 void *out);
813
814 /* blknum.c */
815 extern __u32 ext2fs_inode_bitmap_checksum(ext2_filsys fs, dgrp_t group);
816 extern __u32 ext2fs_block_bitmap_checksum(ext2_filsys fs, dgrp_t group);
817 extern dgrp_t ext2fs_group_of_blk2(ext2_filsys fs, blk64_t);
818 extern blk64_t ext2fs_group_first_block2(ext2_filsys fs, dgrp_t group);
819 extern blk64_t ext2fs_group_last_block2(ext2_filsys fs, dgrp_t group);
820 extern int ext2fs_group_blocks_count(ext2_filsys fs, dgrp_t group);
821 extern blk64_t ext2fs_inode_data_blocks2(ext2_filsys fs,
822 struct ext2_inode *inode);
823 extern blk64_t ext2fs_inode_i_blocks(ext2_filsys fs,
824 struct ext2_inode *inode);
825 extern blk64_t ext2fs_blocks_count(struct ext2_super_block *super);
826 extern void ext2fs_blocks_count_set(struct ext2_super_block *super,
827 blk64_t blk);
828 extern void ext2fs_blocks_count_add(struct ext2_super_block *super,
829 blk64_t blk);
830 extern blk64_t ext2fs_r_blocks_count(struct ext2_super_block *super);
831 extern void ext2fs_r_blocks_count_set(struct ext2_super_block *super,
832 blk64_t blk);
833 extern void ext2fs_r_blocks_count_add(struct ext2_super_block *super,
834 blk64_t blk);
835 extern blk64_t ext2fs_free_blocks_count(struct ext2_super_block *super);
836 extern void ext2fs_free_blocks_count_set(struct ext2_super_block *super,
837 blk64_t blk);
838 extern void ext2fs_free_blocks_count_add(struct ext2_super_block *super,
839 blk64_t blk);
840 /* Block group descriptor accessor functions */
841 extern struct ext2_group_desc *ext2fs_group_desc(ext2_filsys fs,
842 struct opaque_ext2_group_desc *gdp,
843 dgrp_t group);
844 extern blk64_t ext2fs_block_bitmap_csum(ext2_filsys fs, dgrp_t group);
845 extern blk64_t ext2fs_block_bitmap_loc(ext2_filsys fs, dgrp_t group);
846 extern void ext2fs_block_bitmap_loc_set(ext2_filsys fs, dgrp_t group,
847 blk64_t blk);
848 extern __u32 ext2fs_inode_bitmap_csum(ext2_filsys fs, dgrp_t group);
849 extern blk64_t ext2fs_inode_bitmap_loc(ext2_filsys fs, dgrp_t group);
850 extern void ext2fs_inode_bitmap_loc_set(ext2_filsys fs, dgrp_t group,
851 blk64_t blk);
852 extern blk64_t ext2fs_inode_table_loc(ext2_filsys fs, dgrp_t group);
853 extern void ext2fs_inode_table_loc_set(ext2_filsys fs, dgrp_t group,
854 blk64_t blk);
855 extern __u32 ext2fs_bg_free_blocks_count(ext2_filsys fs, dgrp_t group);
856 extern void ext2fs_bg_free_blocks_count_set(ext2_filsys fs, dgrp_t group,
857 __u32 n);
858 extern __u32 ext2fs_bg_free_inodes_count(ext2_filsys fs, dgrp_t group);
859 extern void ext2fs_bg_free_inodes_count_set(ext2_filsys fs, dgrp_t group,
860 __u32 n);
861 extern __u32 ext2fs_bg_used_dirs_count(ext2_filsys fs, dgrp_t group);
862 extern void ext2fs_bg_used_dirs_count_set(ext2_filsys fs, dgrp_t group,
863 __u32 n);
864 extern __u32 ext2fs_bg_itable_unused(ext2_filsys fs, dgrp_t group);
865 extern void ext2fs_bg_itable_unused_set(ext2_filsys fs, dgrp_t group,
866 __u32 n);
867 extern __u16 ext2fs_bg_flags(ext2_filsys fs, dgrp_t group);
868 extern void ext2fs_bg_flags_zap(ext2_filsys fs, dgrp_t group);
869 extern int ext2fs_bg_flags_test(ext2_filsys fs, dgrp_t group, __u16 bg_flag);
870 extern void ext2fs_bg_flags_set(ext2_filsys fs, dgrp_t group, __u16 bg_flags);
871 extern void ext2fs_bg_flags_clear(ext2_filsys fs, dgrp_t group, __u16 bg_flags);
872 extern __u16 ext2fs_bg_checksum(ext2_filsys fs, dgrp_t group);
873 extern void ext2fs_bg_checksum_set(ext2_filsys fs, dgrp_t group, __u16 checksum);
874 extern blk64_t ext2fs_file_acl_block(ext2_filsys fs,
875 const struct ext2_inode *inode);
876 extern void ext2fs_file_acl_block_set(ext2_filsys fs,
877 struct ext2_inode *inode, blk64_t blk);
878
879 /* block.c */
880 extern errcode_t ext2fs_block_iterate(ext2_filsys fs,
881 ext2_ino_t ino,
882 int flags,
883 char *block_buf,
884 int (*func)(ext2_filsys fs,
885 blk_t *blocknr,
886 int blockcnt,
887 void *priv_data),
888 void *priv_data);
889 errcode_t ext2fs_block_iterate2(ext2_filsys fs,
890 ext2_ino_t ino,
891 int flags,
892 char *block_buf,
893 int (*func)(ext2_filsys fs,
894 blk_t *blocknr,
895 e2_blkcnt_t blockcnt,
896 blk_t ref_blk,
897 int ref_offset,
898 void *priv_data),
899 void *priv_data);
900 errcode_t ext2fs_block_iterate3(ext2_filsys fs,
901 ext2_ino_t ino,
902 int flags,
903 char *block_buf,
904 int (*func)(ext2_filsys fs,
905 blk64_t *blocknr,
906 e2_blkcnt_t blockcnt,
907 blk64_t ref_blk,
908 int ref_offset,
909 void *priv_data),
910 void *priv_data);
911
912 /* bmap.c */
913 extern errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino,
914 struct ext2_inode *inode,
915 char *block_buf, int bmap_flags,
916 blk_t block, blk_t *phys_blk);
917 extern errcode_t ext2fs_bmap2(ext2_filsys fs, ext2_ino_t ino,
918 struct ext2_inode *inode,
919 char *block_buf, int bmap_flags, blk64_t block,
920 int *ret_flags, blk64_t *phys_blk);
921
922 #if 0
923 /* bmove.c */
924 extern errcode_t ext2fs_move_blocks(ext2_filsys fs,
925 ext2fs_block_bitmap reserve,
926 ext2fs_block_bitmap alloc_map,
927 int flags);
928 #endif
929
930 /* check_desc.c */
931 extern errcode_t ext2fs_check_desc(ext2_filsys fs);
932
933 /* closefs.c */
934 extern errcode_t ext2fs_close(ext2_filsys fs);
935 extern errcode_t ext2fs_close2(ext2_filsys fs, int flags);
936 extern errcode_t ext2fs_flush(ext2_filsys fs);
937 extern errcode_t ext2fs_flush2(ext2_filsys fs, int flags);
938 extern int ext2fs_bg_has_super(ext2_filsys fs, dgrp_t group_block);
939 extern errcode_t ext2fs_super_and_bgd_loc2(ext2_filsys fs,
940 dgrp_t group,
941 blk64_t *ret_super_blk,
942 blk64_t *ret_old_desc_blk,
943 blk64_t *ret_new_desc_blk,
944 blk_t *ret_used_blks);
945 extern int ext2fs_super_and_bgd_loc(ext2_filsys fs,
946 dgrp_t group,
947 blk_t *ret_super_blk,
948 blk_t *ret_old_desc_blk,
949 blk_t *ret_new_desc_blk,
950 int *ret_meta_bg);
951 extern void ext2fs_update_dynamic_rev(ext2_filsys fs);
952
953 /* crc32c.c */
954 extern __u32 ext2fs_crc32_be(__u32 crc, unsigned char const *p, size_t len);
955 extern __u32 ext2fs_crc32c_le(__u32 crc, unsigned char const *p, size_t len);
956
957 /* csum.c */
958 extern errcode_t ext2fs_mmp_csum_set(ext2_filsys fs, struct mmp_struct *mmp);
959 extern int ext2fs_mmp_csum_verify(ext2_filsys, struct mmp_struct *mmp);
960 extern int ext2fs_verify_csum_type(ext2_filsys fs, struct ext2_super_block *sb);
961 extern errcode_t ext2fs_superblock_csum_set(ext2_filsys fs,
962 struct ext2_super_block *sb);
963 extern int ext2fs_superblock_csum_verify(ext2_filsys fs,
964 struct ext2_super_block *sb);
965 extern errcode_t ext2fs_ext_attr_block_csum_set(ext2_filsys fs,
966 ext2_ino_t inum, blk64_t block,
967 struct ext2_ext_attr_header *hdr);
968 extern int ext2fs_ext_attr_block_csum_verify(ext2_filsys fs, ext2_ino_t inum,
969 blk64_t block,
970 struct ext2_ext_attr_header *hdr);
971 #define EXT2_DIRENT_TAIL(block, blocksize) \
972 ((struct ext2_dir_entry_tail *)(((char *)(block)) + \
973 (blocksize) - sizeof(struct ext2_dir_entry_tail)))
974
975 extern void ext2fs_initialize_dirent_tail(ext2_filsys fs,
976 struct ext2_dir_entry_tail *t);
977 extern int ext2fs_dirent_has_tail(ext2_filsys fs,
978 struct ext2_dir_entry *dirent);
979 extern int ext2fs_dirent_csum_verify(ext2_filsys fs, ext2_ino_t inum,
980 struct ext2_dir_entry *dirent);
981 extern int ext2fs_dir_block_csum_verify(ext2_filsys fs, ext2_ino_t inum,
982 struct ext2_dir_entry *dirent);
983 extern errcode_t ext2fs_dir_block_csum_set(ext2_filsys fs, ext2_ino_t inum,
984 struct ext2_dir_entry *dirent);
985 extern errcode_t ext2fs_get_dx_countlimit(ext2_filsys fs,
986 struct ext2_dir_entry *dirent,
987 struct ext2_dx_countlimit **cc,
988 int *offset);
989 extern errcode_t ext2fs_extent_block_csum_set(ext2_filsys fs,
990 ext2_ino_t inum,
991 struct ext3_extent_header *eh);
992 extern int ext2fs_extent_block_csum_verify(ext2_filsys fs,
993 ext2_ino_t inum,
994 struct ext3_extent_header *eh);
995 extern errcode_t ext2fs_block_bitmap_csum_set(ext2_filsys fs, dgrp_t group,
996 char *bitmap, int size);
997 extern int ext2fs_block_bitmap_csum_verify(ext2_filsys fs, dgrp_t group,
998 char *bitmap, int size);
999 extern errcode_t ext2fs_inode_bitmap_csum_set(ext2_filsys fs, dgrp_t group,
1000 char *bitmap, int size);
1001 extern int ext2fs_inode_bitmap_csum_verify(ext2_filsys fs, dgrp_t group,
1002 char *bitmap, int size);
1003 extern errcode_t ext2fs_inode_csum_set(ext2_filsys fs, ext2_ino_t inum,
1004 struct ext2_inode_large *inode);
1005 extern int ext2fs_inode_csum_verify(ext2_filsys fs, ext2_ino_t inum,
1006 struct ext2_inode_large *inode);
1007 extern void ext2fs_group_desc_csum_set(ext2_filsys fs, dgrp_t group);
1008 extern int ext2fs_group_desc_csum_verify(ext2_filsys fs, dgrp_t group);
1009 extern errcode_t ext2fs_set_gdt_csum(ext2_filsys fs);
1010 extern __u16 ext2fs_group_desc_csum(ext2_filsys fs, dgrp_t group);
1011
1012 /* dblist.c */
1013 extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist);
1014 extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ext2_ino_t ino,
1015 blk_t blk, int blockcnt);
1016 extern errcode_t ext2fs_add_dir_block2(ext2_dblist dblist, ext2_ino_t ino,
1017 blk64_t blk, e2_blkcnt_t blockcnt);
1018 extern void ext2fs_dblist_sort(ext2_dblist dblist,
1019 EXT2_QSORT_TYPE (*sortfunc)(const void *,
1020 const void *));
1021 extern void ext2fs_dblist_sort2(ext2_dblist dblist,
1022 EXT2_QSORT_TYPE (*sortfunc)(const void *,
1023 const void *));
1024 extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist,
1025 int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info,
1026 void *priv_data),
1027 void *priv_data);
1028 extern errcode_t ext2fs_dblist_iterate2(ext2_dblist dblist,
1029 int (*func)(ext2_filsys fs, struct ext2_db_entry2 *db_info,
1030 void *priv_data),
1031 void *priv_data);
1032 extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ext2_ino_t ino,
1033 blk_t blk, int blockcnt);
1034 extern errcode_t ext2fs_set_dir_block2(ext2_dblist dblist, ext2_ino_t ino,
1035 blk64_t blk, e2_blkcnt_t blockcnt);
1036 extern errcode_t ext2fs_copy_dblist(ext2_dblist src,
1037 ext2_dblist *dest);
1038 extern int ext2fs_dblist_count(ext2_dblist dblist);
1039 extern blk64_t ext2fs_dblist_count2(ext2_dblist dblist);
1040 extern errcode_t ext2fs_dblist_get_last(ext2_dblist dblist,
1041 struct ext2_db_entry **entry);
1042 extern errcode_t ext2fs_dblist_get_last2(ext2_dblist dblist,
1043 struct ext2_db_entry2 **entry);
1044 extern errcode_t ext2fs_dblist_drop_last(ext2_dblist dblist);
1045
1046 /* dblist_dir.c */
1047 extern errcode_t
1048 ext2fs_dblist_dir_iterate(ext2_dblist dblist,
1049 int flags,
1050 char *block_buf,
1051 int (*func)(ext2_ino_t dir,
1052 int entry,
1053 struct ext2_dir_entry *dirent,
1054 int offset,
1055 int blocksize,
1056 char *buf,
1057 void *priv_data),
1058 void *priv_data);
1059
1060 /* dirblock.c */
1061 extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block,
1062 void *buf);
1063 extern errcode_t ext2fs_read_dir_block2(ext2_filsys fs, blk_t block,
1064 void *buf, int flags);
1065 extern errcode_t ext2fs_read_dir_block3(ext2_filsys fs, blk64_t block,
1066 void *buf, int flags);
1067 extern errcode_t ext2fs_read_dir_block4(ext2_filsys fs, blk64_t block,
1068 void *buf, int flags, ext2_ino_t ino);
1069 extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block,
1070 void *buf);
1071 extern errcode_t ext2fs_write_dir_block2(ext2_filsys fs, blk_t block,
1072 void *buf, int flags);
1073 extern errcode_t ext2fs_write_dir_block3(ext2_filsys fs, blk64_t block,
1074 void *buf, int flags);
1075 extern errcode_t ext2fs_write_dir_block4(ext2_filsys fs, blk64_t block,
1076 void *buf, int flags, ext2_ino_t ino);
1077
1078 /* dirhash.c */
1079 extern errcode_t ext2fs_dirhash(int version, const char *name, int len,
1080 const __u32 *seed,
1081 ext2_dirhash_t *ret_hash,
1082 ext2_dirhash_t *ret_minor_hash);
1083
1084
1085 /* dir_iterate.c */
1086 extern errcode_t ext2fs_get_rec_len(ext2_filsys fs,
1087 struct ext2_dir_entry *dirent,
1088 unsigned int *rec_len);
1089 extern errcode_t ext2fs_set_rec_len(ext2_filsys fs,
1090 unsigned int len,
1091 struct ext2_dir_entry *dirent);
1092 extern errcode_t ext2fs_dir_iterate(ext2_filsys fs,
1093 ext2_ino_t dir,
1094 int flags,
1095 char *block_buf,
1096 int (*func)(struct ext2_dir_entry *dirent,
1097 int offset,
1098 int blocksize,
1099 char *buf,
1100 void *priv_data),
1101 void *priv_data);
1102 extern errcode_t ext2fs_dir_iterate2(ext2_filsys fs,
1103 ext2_ino_t dir,
1104 int flags,
1105 char *block_buf,
1106 int (*func)(ext2_ino_t dir,
1107 int entry,
1108 struct ext2_dir_entry *dirent,
1109 int offset,
1110 int blocksize,
1111 char *buf,
1112 void *priv_data),
1113 void *priv_data);
1114
1115 /* dupfs.c */
1116 extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest);
1117
1118 /* expanddir.c */
1119 extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir);
1120
1121 /* ext_attr.c */
1122 extern __u32 ext2fs_ext_attr_hash_entry(struct ext2_ext_attr_entry *entry,
1123 void *data);
1124 extern errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf);
1125 extern errcode_t ext2fs_read_ext_attr2(ext2_filsys fs, blk64_t block,
1126 void *buf);
1127 extern errcode_t ext2fs_read_ext_attr3(ext2_filsys fs, blk64_t block,
1128 void *buf, ext2_ino_t inum);
1129 extern errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block,
1130 void *buf);
1131 extern errcode_t ext2fs_write_ext_attr2(ext2_filsys fs, blk64_t block,
1132 void *buf);
1133 extern errcode_t ext2fs_write_ext_attr3(ext2_filsys fs, blk64_t block,
1134 void *buf, ext2_ino_t inum);
1135 extern errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk,
1136 char *block_buf,
1137 int adjust, __u32 *newcount);
1138 extern errcode_t ext2fs_adjust_ea_refcount2(ext2_filsys fs, blk64_t blk,
1139 char *block_buf,
1140 int adjust, __u32 *newcount);
1141 extern errcode_t ext2fs_adjust_ea_refcount3(ext2_filsys fs, blk64_t blk,
1142 char *block_buf,
1143 int adjust, __u32 *newcount,
1144 ext2_ino_t inum);
1145
1146 /* extent.c */
1147 extern errcode_t ext2fs_extent_header_verify(void *ptr, int size);
1148 extern errcode_t ext2fs_extent_open(ext2_filsys fs, ext2_ino_t ino,
1149 ext2_extent_handle_t *handle);
1150 extern errcode_t ext2fs_extent_open2(ext2_filsys fs, ext2_ino_t ino,
1151 struct ext2_inode *inode,
1152 ext2_extent_handle_t *ret_handle);
1153 extern void ext2fs_extent_free(ext2_extent_handle_t handle);
1154 extern errcode_t ext2fs_extent_get(ext2_extent_handle_t handle,
1155 int flags, struct ext2fs_extent *extent);
1156 extern errcode_t ext2fs_extent_node_split(ext2_extent_handle_t handle);
1157 extern errcode_t ext2fs_extent_replace(ext2_extent_handle_t handle, int flags,
1158 struct ext2fs_extent *extent);
1159 extern errcode_t ext2fs_extent_insert(ext2_extent_handle_t handle, int flags,
1160 struct ext2fs_extent *extent);
1161 extern errcode_t ext2fs_extent_set_bmap(ext2_extent_handle_t handle,
1162 blk64_t logical, blk64_t physical,
1163 int flags);
1164 extern errcode_t ext2fs_extent_delete(ext2_extent_handle_t handle, int flags);
1165 extern errcode_t ext2fs_extent_get_info(ext2_extent_handle_t handle,
1166 struct ext2_extent_info *info);
1167 extern errcode_t ext2fs_extent_goto(ext2_extent_handle_t handle,
1168 blk64_t blk);
1169 extern errcode_t ext2fs_extent_goto2(ext2_extent_handle_t handle,
1170 int leaf_level, blk64_t blk);
1171 extern errcode_t ext2fs_extent_fix_parents(ext2_extent_handle_t handle);
1172
1173 /* fileio.c */
1174 extern errcode_t ext2fs_file_open2(ext2_filsys fs, ext2_ino_t ino,
1175 struct ext2_inode *inode,
1176 int flags, ext2_file_t *ret);
1177 extern errcode_t ext2fs_file_open(ext2_filsys fs, ext2_ino_t ino,
1178 int flags, ext2_file_t *ret);
1179 extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file);
1180 struct ext2_inode *ext2fs_file_get_inode(ext2_file_t file);
1181 extern ext2_ino_t ext2fs_file_get_inode_num(ext2_file_t file);
1182 extern errcode_t ext2fs_file_close(ext2_file_t file);
1183 extern errcode_t ext2fs_file_flush(ext2_file_t file);
1184 extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf,
1185 unsigned int wanted, unsigned int *got);
1186 extern errcode_t ext2fs_file_write(ext2_file_t file, const void *buf,
1187 unsigned int nbytes, unsigned int *written);
1188 extern errcode_t ext2fs_file_llseek(ext2_file_t file, __u64 offset,
1189 int whence, __u64 *ret_pos);
1190 extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset,
1191 int whence, ext2_off_t *ret_pos);
1192 errcode_t ext2fs_file_get_lsize(ext2_file_t file, __u64 *ret_size);
1193 extern ext2_off_t ext2fs_file_get_size(ext2_file_t file);
1194 extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size);
1195 extern errcode_t ext2fs_file_set_size2(ext2_file_t file, ext2_off64_t size);
1196
1197 /* finddev.c */
1198 extern char *ext2fs_find_block_device(dev_t device);
1199
1200 /* flushb.c */
1201 extern errcode_t ext2fs_sync_device(int fd, int flushb);
1202
1203 /* freefs.c */
1204 extern void ext2fs_free(ext2_filsys fs);
1205 extern void ext2fs_free_dblist(ext2_dblist dblist);
1206 extern void ext2fs_badblocks_list_free(ext2_badblocks_list bb);
1207 extern void ext2fs_u32_list_free(ext2_u32_list bb);
1208
1209 /* gen_bitmap.c */
1210 extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap);
1211 extern errcode_t ext2fs_make_generic_bitmap(errcode_t magic, ext2_filsys fs,
1212 __u32 start, __u32 end,
1213 __u32 real_end,
1214 const char *descr, char *init_map,
1215 ext2fs_generic_bitmap *ret);
1216 extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start,
1217 __u32 end,
1218 __u32 real_end,
1219 const char *descr,
1220 ext2fs_generic_bitmap *ret);
1221 extern errcode_t ext2fs_copy_generic_bitmap(ext2fs_generic_bitmap src,
1222 ext2fs_generic_bitmap *dest);
1223 extern void ext2fs_clear_generic_bitmap(ext2fs_generic_bitmap bitmap);
1224 extern errcode_t ext2fs_fudge_generic_bitmap_end(ext2fs_inode_bitmap bitmap,
1225 errcode_t magic,
1226 errcode_t neq,
1227 ext2_ino_t end,
1228 ext2_ino_t *oend);
1229 extern void ext2fs_set_generic_bitmap_padding(ext2fs_generic_bitmap map);
1230 extern errcode_t ext2fs_resize_generic_bitmap(errcode_t magic,
1231 __u32 new_end,
1232 __u32 new_real_end,
1233 ext2fs_generic_bitmap bmap);
1234 extern errcode_t ext2fs_compare_generic_bitmap(errcode_t magic, errcode_t neq,
1235 ext2fs_generic_bitmap bm1,
1236 ext2fs_generic_bitmap bm2);
1237 extern errcode_t ext2fs_get_generic_bitmap_range(ext2fs_generic_bitmap bmap,
1238 errcode_t magic,
1239 __u32 start, __u32 num,
1240 void *out);
1241 extern errcode_t ext2fs_set_generic_bitmap_range(ext2fs_generic_bitmap bmap,
1242 errcode_t magic,
1243 __u32 start, __u32 num,
1244 void *in);
1245 extern errcode_t ext2fs_find_first_zero_generic_bitmap(ext2fs_generic_bitmap bitmap,
1246 __u32 start, __u32 end,
1247 __u32 *out);
1248
1249 /* gen_bitmap64.c */
1250 void ext2fs_free_generic_bmap(ext2fs_generic_bitmap bmap);
1251 errcode_t ext2fs_alloc_generic_bmap(ext2_filsys fs, errcode_t magic,
1252 int type, __u64 start, __u64 end,
1253 __u64 real_end,
1254 const char *descr,
1255 ext2fs_generic_bitmap *ret);
1256 errcode_t ext2fs_copy_generic_bmap(ext2fs_generic_bitmap src,
1257 ext2fs_generic_bitmap *dest);
1258 void ext2fs_clear_generic_bmap(ext2fs_generic_bitmap bitmap);
1259 errcode_t ext2fs_fudge_generic_bmap_end(ext2fs_generic_bitmap bitmap,
1260 errcode_t neq,
1261 __u64 end, __u64 *oend);
1262 void ext2fs_set_generic_bmap_padding(ext2fs_generic_bitmap bmap);
1263 errcode_t ext2fs_resize_generic_bmap(ext2fs_generic_bitmap bmap,
1264 __u64 new_end,
1265 __u64 new_real_end);
1266 errcode_t ext2fs_compare_generic_bmap(errcode_t neq,
1267 ext2fs_generic_bitmap bm1,
1268 ext2fs_generic_bitmap bm2);
1269 errcode_t ext2fs_get_generic_bmap_range(ext2fs_generic_bitmap bmap,
1270 __u64 start, unsigned int num,
1271 void *out);
1272 errcode_t ext2fs_set_generic_bmap_range(ext2fs_generic_bitmap bmap,
1273 __u64 start, unsigned int num,
1274 void *in);
1275 errcode_t ext2fs_convert_subcluster_bitmap(ext2_filsys fs,
1276 ext2fs_block_bitmap *bitmap);
1277
1278 /* get_num_dirs.c */
1279 extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs);
1280
1281 /* getsize.c */
1282 extern errcode_t ext2fs_get_device_size(const char *file, int blocksize,
1283 blk_t *retblocks);
1284 extern errcode_t ext2fs_get_device_size2(const char *file, int blocksize,
1285 blk64_t *retblocks);
1286
1287 /* getsectsize.c */
1288 extern int ext2fs_get_dio_alignment(int fd);
1289 errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize);
1290 errcode_t ext2fs_get_device_phys_sectsize(const char *file, int *sectsize);
1291
1292 /* i_block.c */
1293 errcode_t ext2fs_iblk_add_blocks(ext2_filsys fs, struct ext2_inode *inode,
1294 blk64_t num_blocks);
1295 errcode_t ext2fs_iblk_sub_blocks(ext2_filsys fs, struct ext2_inode *inode,
1296 blk64_t num_blocks);
1297 errcode_t ext2fs_iblk_set(ext2_filsys fs, struct ext2_inode *inode, blk64_t b);
1298
1299 /* imager.c */
1300 extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags);
1301 extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags);
1302 extern errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd, int flags);
1303 extern errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd, int flags);
1304 extern errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags);
1305 extern errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags);
1306
1307 /* ind_block.c */
1308 errcode_t ext2fs_read_ind_block(ext2_filsys fs, blk_t blk, void *buf);
1309 errcode_t ext2fs_write_ind_block(ext2_filsys fs, blk_t blk, void *buf);
1310
1311 /* initialize.c */
1312 extern errcode_t ext2fs_initialize(const char *name, int flags,
1313 struct ext2_super_block *param,
1314 io_manager manager, ext2_filsys *ret_fs);
1315
1316 /* icount.c */
1317 extern void ext2fs_free_icount(ext2_icount_t icount);
1318 extern errcode_t ext2fs_create_icount_tdb(ext2_filsys fs, char *tdb_dir,
1319 int flags, ext2_icount_t *ret);
1320 extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags,
1321 unsigned int size,
1322 ext2_icount_t hint, ext2_icount_t *ret);
1323 extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags,
1324 unsigned int size,
1325 ext2_icount_t *ret);
1326 extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ext2_ino_t ino,
1327 __u16 *ret);
1328 extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ext2_ino_t ino,
1329 __u16 *ret);
1330 extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ext2_ino_t ino,
1331 __u16 *ret);
1332 extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ext2_ino_t ino,
1333 __u16 count);
1334 extern ext2_ino_t ext2fs_get_icount_size(ext2_icount_t icount);
1335 errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *);
1336
1337 /* inline.c */
1338
1339 extern errcode_t ext2fs_get_memalign(unsigned long size,
1340 unsigned long align, void *ptr);
1341
1342 /* inode.c */
1343 extern void ext2fs_free_inode_cache(struct ext2_inode_cache *icache);
1344 extern errcode_t ext2fs_flush_icache(ext2_filsys fs);
1345 extern errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan,
1346 ext2_ino_t *ino,
1347 struct ext2_inode *inode,
1348 int bufsize);
1349 extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks,
1350 ext2_inode_scan *ret_scan);
1351 extern void ext2fs_close_inode_scan(ext2_inode_scan scan);
1352 extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino,
1353 struct ext2_inode *inode);
1354 extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan,
1355 int group);
1356 extern void ext2fs_set_inode_callback
1357 (ext2_inode_scan scan,
1358 errcode_t (*done_group)(ext2_filsys fs,
1359 ext2_inode_scan scan,
1360 dgrp_t group,
1361 void * priv_data),
1362 void *done_group_data);
1363 extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags,
1364 int clear_flags);
1365 extern errcode_t ext2fs_read_inode_full(ext2_filsys fs, ext2_ino_t ino,
1366 struct ext2_inode * inode,
1367 int bufsize);
1368 extern errcode_t ext2fs_read_inode (ext2_filsys fs, ext2_ino_t ino,
1369 struct ext2_inode * inode);
1370 extern errcode_t ext2fs_write_inode_full(ext2_filsys fs, ext2_ino_t ino,
1371 struct ext2_inode * inode,
1372 int bufsize);
1373 extern errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino,
1374 struct ext2_inode * inode);
1375 extern errcode_t ext2fs_write_new_inode(ext2_filsys fs, ext2_ino_t ino,
1376 struct ext2_inode * inode);
1377 extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks);
1378 extern errcode_t ext2fs_check_directory(ext2_filsys fs, ext2_ino_t ino);
1379
1380 /* inode_io.c */
1381 extern io_manager inode_io_manager;
1382 extern errcode_t ext2fs_inode_io_intern(ext2_filsys fs, ext2_ino_t ino,
1383 char **name);
1384 extern errcode_t ext2fs_inode_io_intern2(ext2_filsys fs, ext2_ino_t ino,
1385 struct ext2_inode *inode,
1386 char **name);
1387
1388 /* ismounted.c */
1389 extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags);
1390 extern errcode_t ext2fs_check_mount_point(const char *device, int *mount_flags,
1391 char *mtpt, int mtlen);
1392
1393 /* punch.c */
1394 /*
1395 * NOTE: This function removes from an inode the blocks "start", "end", and
1396 * every block in between.
1397 */
1398 extern errcode_t ext2fs_punch(ext2_filsys fs, ext2_ino_t ino,
1399 struct ext2_inode *inode,
1400 char *block_buf, blk64_t start,
1401 blk64_t end);
1402
1403 /* namei.c */
1404 extern errcode_t ext2fs_lookup(ext2_filsys fs, ext2_ino_t dir, const char *name,
1405 int namelen, char *buf, ext2_ino_t *inode);
1406 extern errcode_t ext2fs_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
1407 const char *name, ext2_ino_t *inode);
1408 errcode_t ext2fs_namei_follow(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
1409 const char *name, ext2_ino_t *inode);
1410 extern errcode_t ext2fs_follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
1411 ext2_ino_t inode, ext2_ino_t *res_inode);
1412
1413 /* native.c */
1414 int ext2fs_native_flag(void);
1415
1416 /* newdir.c */
1417 extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino,
1418 ext2_ino_t parent_ino, char **block);
1419
1420 /* mkdir.c */
1421 extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum,
1422 const char *name);
1423
1424 /* mkjournal.c */
1425 extern errcode_t ext2fs_zero_blocks(ext2_filsys fs, blk_t blk, int num,
1426 blk_t *ret_blk, int *ret_count);
1427 extern errcode_t ext2fs_zero_blocks2(ext2_filsys fs, blk64_t blk, int num,
1428 blk64_t *ret_blk, int *ret_count);
1429 extern errcode_t ext2fs_create_journal_superblock(ext2_filsys fs,
1430 __u32 num_blocks, int flags,
1431 char **ret_jsb);
1432 extern errcode_t ext2fs_add_journal_device(ext2_filsys fs,
1433 ext2_filsys journal_dev);
1434 extern errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t num_blocks,
1435 int flags);
1436 extern int ext2fs_default_journal_size(__u64 num_blocks);
1437
1438 /* openfs.c */
1439 extern errcode_t ext2fs_open(const char *name, int flags, int superblock,
1440 unsigned int block_size, io_manager manager,
1441 ext2_filsys *ret_fs);
1442 extern errcode_t ext2fs_open2(const char *name, const char *io_options,
1443 int flags, int superblock,
1444 unsigned int block_size, io_manager manager,
1445 ext2_filsys *ret_fs);
1446 extern blk64_t ext2fs_descriptor_block_loc2(ext2_filsys fs,
1447 blk64_t group_block, dgrp_t i);
1448 extern blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block,
1449 dgrp_t i);
1450 errcode_t ext2fs_get_data_io(ext2_filsys fs, io_channel *old_io);
1451 errcode_t ext2fs_set_data_io(ext2_filsys fs, io_channel new_io);
1452 errcode_t ext2fs_rewrite_to_io(ext2_filsys fs, io_channel new_io);
1453
1454 /* get_pathname.c */
1455 extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino,
1456 char **name);
1457
1458 /* link.c */
1459 errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name,
1460 ext2_ino_t ino, int flags);
1461 errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir, const char *name,
1462 ext2_ino_t ino, int flags);
1463
1464 /* symlink.c */
1465 errcode_t ext2fs_symlink(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t ino,
1466 const char *name, char *target);
1467
1468 /* mmp.c */
1469 errcode_t ext2fs_mmp_read(ext2_filsys fs, blk64_t mmp_blk, void *buf);
1470 errcode_t ext2fs_mmp_write(ext2_filsys fs, blk64_t mmp_blk, void *buf);
1471 errcode_t ext2fs_mmp_clear(ext2_filsys fs);
1472 errcode_t ext2fs_mmp_init(ext2_filsys fs);
1473 errcode_t ext2fs_mmp_start(ext2_filsys fs);
1474 errcode_t ext2fs_mmp_update(ext2_filsys fs);
1475 errcode_t ext2fs_mmp_update2(ext2_filsys fs, int immediately);
1476 errcode_t ext2fs_mmp_stop(ext2_filsys fs);
1477 unsigned ext2fs_mmp_new_seq(void);
1478
1479 /* read_bb.c */
1480 extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs,
1481 ext2_badblocks_list *bb_list);
1482
1483 /* read_bb_file.c */
1484 extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f,
1485 ext2_badblocks_list *bb_list,
1486 void *priv_data,
1487 void (*invalid)(ext2_filsys fs,
1488 blk_t blk,
1489 char *badstr,
1490 void *priv_data));
1491 extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f,
1492 ext2_badblocks_list *bb_list,
1493 void (*invalid)(ext2_filsys fs,
1494 blk_t blk));
1495
1496 /* res_gdt.c */
1497 extern errcode_t ext2fs_create_resize_inode(ext2_filsys fs);
1498
1499 /* swapfs.c */
1500 extern errcode_t ext2fs_dirent_swab_in(ext2_filsys fs, char *buf, int flags);
1501 extern errcode_t ext2fs_dirent_swab_out(ext2_filsys fs, char *buf, int flags);
1502 extern void ext2fs_swap_ext_attr(char *to, char *from, int bufsize,
1503 int has_header);
1504 extern void ext2fs_swap_ext_attr_header(struct ext2_ext_attr_header *to_header,
1505 struct ext2_ext_attr_header *from_hdr);
1506 extern void ext2fs_swap_ext_attr_entry(struct ext2_ext_attr_entry *to_entry,
1507 struct ext2_ext_attr_entry *from_entry);
1508 extern void ext2fs_swap_super(struct ext2_super_block * super);
1509 extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp);
1510 extern void ext2fs_swap_group_desc2(ext2_filsys, struct ext2_group_desc *gdp);
1511 extern void ext2fs_swap_inode_full(ext2_filsys fs, struct ext2_inode_large *t,
1512 struct ext2_inode_large *f, int hostorder,
1513 int bufsize);
1514 extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t,
1515 struct ext2_inode *f, int hostorder);
1516 extern void ext2fs_swap_mmp(struct mmp_struct *mmp);
1517
1518 /* unix_io.c */
1519 extern int ext2fs_open_file(const char *pathname, int flags, mode_t mode);
1520 extern int ext2fs_stat(const char *path, ext2fs_struct_stat *buf);
1521 extern int ext2fs_fstat(int fd, ext2fs_struct_stat *buf);
1522
1523 /* valid_blk.c */
1524 extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode);
1525 extern int ext2fs_inode_has_valid_blocks2(ext2_filsys fs,
1526 struct ext2_inode *inode);
1527
1528 /* version.c */
1529 extern int ext2fs_parse_version_string(const char *ver_string);
1530 extern int ext2fs_get_library_version(const char **ver_string,
1531 const char **date_string);
1532
1533 /* write_bb_file.c */
1534 extern errcode_t ext2fs_write_bb_FILE(ext2_badblocks_list bb_list,
1535 unsigned int flags,
1536 FILE *f);
1537
1538
1539 /* inline functions */
1540 #ifdef NO_INLINE_FUNCS
1541 extern void ext2fs_init_csum_seed(ext2_filsys fs);
1542 extern errcode_t ext2fs_get_mem(unsigned long size, void *ptr);
1543 extern errcode_t ext2fs_get_memzero(unsigned long size, void *ptr);
1544 extern errcode_t ext2fs_get_array(unsigned long count,
1545 unsigned long size, void *ptr);
1546 extern errcode_t ext2fs_get_arrayzero(unsigned long count,
1547 unsigned long size, void *ptr);
1548 extern errcode_t ext2fs_free_mem(void *ptr);
1549 extern errcode_t ext2fs_resize_mem(unsigned long old_size,
1550 unsigned long size, void *ptr);
1551 extern void ext2fs_mark_super_dirty(ext2_filsys fs);
1552 extern void ext2fs_mark_changed(ext2_filsys fs);
1553 extern int ext2fs_test_changed(ext2_filsys fs);
1554 extern void ext2fs_mark_valid(ext2_filsys fs);
1555 extern void ext2fs_unmark_valid(ext2_filsys fs);
1556 extern int ext2fs_test_valid(ext2_filsys fs);
1557 extern void ext2fs_mark_ib_dirty(ext2_filsys fs);
1558 extern void ext2fs_mark_bb_dirty(ext2_filsys fs);
1559 extern int ext2fs_test_ib_dirty(ext2_filsys fs);
1560 extern int ext2fs_test_bb_dirty(ext2_filsys fs);
1561 extern int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk);
1562 extern int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino);
1563 extern blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group);
1564 extern blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group);
1565 extern blk_t ext2fs_inode_data_blocks(ext2_filsys fs,
1566 struct ext2_inode *inode);
1567 extern unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b);
1568 extern __u64 ext2fs_div64_ceil(__u64 a, __u64 b);
1569 #endif
1570
1571 /*
1572 * The actual inlined functions definitions themselves...
1573 *
1574 * If NO_INLINE_FUNCS is defined, then we won't try to do inline
1575 * functions at all!
1576 */
1577 #if (defined(INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS))
1578 #ifdef INCLUDE_INLINE_FUNCS
1579 #define _INLINE_ extern
1580 #else
1581 #if (__STDC_VERSION__ >= 199901L)
1582 #define _INLINE_ inline
1583 #else
1584 #ifdef __GNUC__
1585 #define _INLINE_ extern __inline__
1586 #else /* For Watcom C */
1587 #define _INLINE_ extern inline
1588 #endif /* __GNUC__ */
1589 #endif /* __STDC_VERSION__ >= 199901L */
1590 #endif
1591
1592 _INLINE_ void ext2fs_init_csum_seed(ext2_filsys fs)
1593 {
1594 if (!EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
1595 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM))
1596 return;
1597
1598 fs->csum_seed = ext2fs_crc32c_le(~0, fs->super->s_uuid,
1599 sizeof(fs->super->s_uuid));
1600 }
1601
1602 #ifndef EXT2_CUSTOM_MEMORY_ROUTINES
1603 #include <string.h>
1604 /*
1605 * Allocate memory
1606 */
1607 _INLINE_ errcode_t ext2fs_get_mem(unsigned long size, void *ptr)
1608 {
1609 void *pp;
1610
1611 pp = malloc(size);
1612 if (!pp)
1613 return EXT2_ET_NO_MEMORY;
1614 memcpy(ptr, &pp, sizeof (pp));
1615 return 0;
1616 }
1617
1618 _INLINE_ errcode_t ext2fs_get_memzero(unsigned long size, void *ptr)
1619 {
1620 void *pp;
1621
1622 pp = malloc(size);
1623 if (!pp)
1624 return EXT2_ET_NO_MEMORY;
1625 memset(pp, 0, size);
1626 memcpy(ptr, &pp, sizeof(pp));
1627 return 0;
1628 }
1629
1630 _INLINE_ errcode_t ext2fs_get_array(unsigned long count, unsigned long size, void *ptr)
1631 {
1632 if (count && (-1UL)/count<size)
1633 return EXT2_ET_NO_MEMORY;
1634 return ext2fs_get_mem(count*size, ptr);
1635 }
1636
1637 _INLINE_ errcode_t ext2fs_get_arrayzero(unsigned long count,
1638 unsigned long size, void *ptr)
1639 {
1640 void *pp;
1641
1642 if (count && (-1UL)/count<size)
1643 return EXT2_ET_NO_MEMORY;
1644 pp = calloc(count, size);
1645 if (!pp)
1646 return EXT2_ET_NO_MEMORY;
1647 memcpy(ptr, &pp, sizeof(pp));
1648 return 0;
1649 }
1650
1651 /*
1652 * Free memory
1653 */
1654 _INLINE_ errcode_t ext2fs_free_mem(void *ptr)
1655 {
1656 void *p;
1657
1658 memcpy(&p, ptr, sizeof(p));
1659 free(p);
1660 p = 0;
1661 memcpy(ptr, &p, sizeof(p));
1662 return 0;
1663 }
1664
1665 /*
1666 * Resize memory
1667 */
1668 _INLINE_ errcode_t ext2fs_resize_mem(unsigned long EXT2FS_ATTR((unused)) old_size,
1669 unsigned long size, void *ptr)
1670 {
1671 void *p;
1672
1673 /* Use "memcpy" for pointer assignments here to avoid problems
1674 * with C99 strict type aliasing rules. */
1675 memcpy(&p, ptr, sizeof(p));
1676 p = realloc(p, size);
1677 if (!p)
1678 return EXT2_ET_NO_MEMORY;
1679 memcpy(ptr, &p, sizeof(p));
1680 return 0;
1681 }
1682 #endif /* Custom memory routines */
1683
1684 /*
1685 * Mark a filesystem superblock as dirty
1686 */
1687 _INLINE_ void ext2fs_mark_super_dirty(ext2_filsys fs)
1688 {
1689 fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_CHANGED;
1690 }
1691
1692 /*
1693 * Mark a filesystem as changed
1694 */
1695 _INLINE_ void ext2fs_mark_changed(ext2_filsys fs)
1696 {
1697 fs->flags |= EXT2_FLAG_CHANGED;
1698 }
1699
1700 /*
1701 * Check to see if a filesystem has changed
1702 */
1703 _INLINE_ int ext2fs_test_changed(ext2_filsys fs)
1704 {
1705 return (fs->flags & EXT2_FLAG_CHANGED);
1706 }
1707
1708 /*
1709 * Mark a filesystem as valid
1710 */
1711 _INLINE_ void ext2fs_mark_valid(ext2_filsys fs)
1712 {
1713 fs->flags |= EXT2_FLAG_VALID;
1714 }
1715
1716 /*
1717 * Mark a filesystem as NOT valid
1718 */
1719 _INLINE_ void ext2fs_unmark_valid(ext2_filsys fs)
1720 {
1721 fs->flags &= ~EXT2_FLAG_VALID;
1722 }
1723
1724 /*
1725 * Check to see if a filesystem is valid
1726 */
1727 _INLINE_ int ext2fs_test_valid(ext2_filsys fs)
1728 {
1729 return (fs->flags & EXT2_FLAG_VALID);
1730 }
1731
1732 /*
1733 * Mark the inode bitmap as dirty
1734 */
1735 _INLINE_ void ext2fs_mark_ib_dirty(ext2_filsys fs)
1736 {
1737 fs->flags |= EXT2_FLAG_IB_DIRTY | EXT2_FLAG_CHANGED;
1738 }
1739
1740 /*
1741 * Mark the block bitmap as dirty
1742 */
1743 _INLINE_ void ext2fs_mark_bb_dirty(ext2_filsys fs)
1744 {
1745 fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_CHANGED;
1746 }
1747
1748 /*
1749 * Check to see if a filesystem's inode bitmap is dirty
1750 */
1751 _INLINE_ int ext2fs_test_ib_dirty(ext2_filsys fs)
1752 {
1753 return (fs->flags & EXT2_FLAG_IB_DIRTY);
1754 }
1755
1756 /*
1757 * Check to see if a filesystem's block bitmap is dirty
1758 */
1759 _INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs)
1760 {
1761 return (fs->flags & EXT2_FLAG_BB_DIRTY);
1762 }
1763
1764 /*
1765 * Return the group # of a block
1766 */
1767 _INLINE_ int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk)
1768 {
1769 return ext2fs_group_of_blk2(fs, blk);
1770 }
1771 /*
1772 * Return the group # of an inode number
1773 */
1774 _INLINE_ int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino)
1775 {
1776 return (ino - 1) / fs->super->s_inodes_per_group;
1777 }
1778
1779 /*
1780 * Return the first block (inclusive) in a group
1781 */
1782 _INLINE_ blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group)
1783 {
1784 return ext2fs_group_first_block2(fs, group);
1785 }
1786
1787 /*
1788 * Return the last block (inclusive) in a group
1789 */
1790 _INLINE_ blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group)
1791 {
1792 return ext2fs_group_last_block2(fs, group);
1793 }
1794
1795 _INLINE_ blk_t ext2fs_inode_data_blocks(ext2_filsys fs,
1796 struct ext2_inode *inode)
1797 {
1798 return ext2fs_inode_data_blocks2(fs, inode);
1799 }
1800
1801 /*
1802 * This is an efficient, overflow safe way of calculating ceil((1.0 * a) / b)
1803 */
1804 _INLINE_ unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b)
1805 {
1806 if (!a)
1807 return 0;
1808 return ((a - 1) / b) + 1;
1809 }
1810
1811 _INLINE_ __u64 ext2fs_div64_ceil(__u64 a, __u64 b)
1812 {
1813 if (!a)
1814 return 0;
1815 return ((a - 1) / b) + 1;
1816 }
1817
1818 _INLINE_ int ext2fs_dirent_name_len(const struct ext2_dir_entry *entry)
1819 {
1820 return entry->name_len & 0xff;
1821 }
1822
1823 _INLINE_ void ext2fs_dirent_set_name_len(struct ext2_dir_entry *entry, int len)
1824 {
1825 entry->name_len = (entry->name_len & 0xff00) | (len & 0xff);
1826 }
1827
1828 _INLINE_ int ext2fs_dirent_file_type(const struct ext2_dir_entry *entry)
1829 {
1830 return entry->name_len >> 8;
1831 }
1832
1833 _INLINE_ void ext2fs_dirent_set_file_type(struct ext2_dir_entry *entry, int type)
1834 {
1835 entry->name_len = (entry->name_len & 0xff) | (type << 8);
1836 }
1837
1838 #undef _INLINE_
1839 #endif
1840
1841 #ifdef __cplusplus
1842 }
1843 #endif
1844
1845 #endif /* _EXT2FS_EXT2FS_H */
Unnamed repository; edit this file 'description' to name the repository.