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Fix various clang and gcc -Wall warnings
[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 #define UUID_STR_SIZE 37
43
44 /*
45 * The last ext2fs revision level that this version of the library is
46 * able to support.
47 */
48 #define EXT2_LIB_CURRENT_REV EXT2_DYNAMIC_REV
49
50 #ifdef HAVE_SYS_TYPES_H
51 #include <sys/types.h>
52 #endif
53
54 #include <stdio.h>
55 #include <stdlib.h>
56 #include <string.h>
57 #include <errno.h>
58
59 #if EXT2_FLAT_INCLUDES
60 #include "e2_types.h"
61 #include "ext2_fs.h"
62 #include "ext3_extents.h"
63 #else
64 #include <ext2fs/ext2_types.h>
65 #include <ext2fs/ext2_fs.h>
66 #include <ext2fs/ext3_extents.h>
67 #endif /* EXT2_FLAT_INCLUDES */
68
69 typedef __u32 __bitwise ext2_ino_t;
70 typedef __u32 __bitwise blk_t;
71 typedef __u64 __bitwise blk64_t;
72 typedef __u32 __bitwise dgrp_t;
73 typedef __u32 __bitwise ext2_off_t;
74 typedef __u64 __bitwise ext2_off64_t;
75 typedef __s64 __bitwise e2_blkcnt_t;
76 typedef __u32 __bitwise ext2_dirhash_t;
77
78 #if EXT2_FLAT_INCLUDES
79 #include "com_err.h"
80 #include "ext2_io.h"
81 #include "ext2_err.h"
82 #include "ext2_ext_attr.h"
83 #else
84 #include <et/com_err.h>
85 #include <ext2fs/ext2_io.h>
86 #include <ext2fs/ext2_err.h>
87 #include <ext2fs/ext2_ext_attr.h>
88 #endif
89
90 /*
91 * Portability help for Microsoft Visual C++
92 */
93 #ifdef _MSC_VER
94 #define EXT2_QSORT_TYPE int __cdecl
95 #else
96 #define EXT2_QSORT_TYPE int
97 #endif
98
99 typedef struct struct_ext2_filsys *ext2_filsys;
100
101 #define EXT2FS_MARK_ERROR 0
102 #define EXT2FS_UNMARK_ERROR 1
103 #define EXT2FS_TEST_ERROR 2
104
105 typedef struct ext2fs_struct_generic_bitmap *ext2fs_generic_bitmap;
106 typedef struct ext2fs_struct_generic_bitmap *ext2fs_inode_bitmap;
107 typedef struct ext2fs_struct_generic_bitmap *ext2fs_block_bitmap;
108
109 #define EXT2_FIRST_INODE(s) EXT2_FIRST_INO(s)
110
111
112 /*
113 * Badblocks list definitions
114 */
115
116 typedef struct ext2_struct_u32_list *ext2_badblocks_list;
117 typedef struct ext2_struct_u32_iterate *ext2_badblocks_iterate;
118
119 typedef struct ext2_struct_u32_list *ext2_u32_list;
120 typedef struct ext2_struct_u32_iterate *ext2_u32_iterate;
121
122 /* old */
123 typedef struct ext2_struct_u32_list *badblocks_list;
124 typedef struct ext2_struct_u32_iterate *badblocks_iterate;
125
126 #define BADBLOCKS_FLAG_DIRTY 1
127
128 /*
129 * ext2_dblist structure and abstractions (see dblist.c)
130 */
131 struct ext2_db_entry2 {
132 ext2_ino_t ino;
133 blk64_t blk;
134 e2_blkcnt_t blockcnt;
135 };
136
137 /* Ye Olde 32-bit version */
138 struct ext2_db_entry {
139 ext2_ino_t ino;
140 blk_t blk;
141 int blockcnt;
142 };
143
144 typedef struct ext2_struct_dblist *ext2_dblist;
145
146 #define DBLIST_ABORT 1
147
148 /*
149 * ext2_fileio definitions
150 */
151
152 #define EXT2_FILE_WRITE 0x0001
153 #define EXT2_FILE_CREATE 0x0002
154
155 #define EXT2_FILE_MASK 0x00FF
156
157 #define EXT2_FILE_BUF_DIRTY 0x4000
158 #define EXT2_FILE_BUF_VALID 0x2000
159
160 typedef struct ext2_file *ext2_file_t;
161
162 #define EXT2_SEEK_SET 0
163 #define EXT2_SEEK_CUR 1
164 #define EXT2_SEEK_END 2
165
166 /*
167 * Flags for the ext2_filsys structure and for ext2fs_open()
168 */
169 #define EXT2_FLAG_RW 0x01
170 #define EXT2_FLAG_CHANGED 0x02
171 #define EXT2_FLAG_DIRTY 0x04
172 #define EXT2_FLAG_VALID 0x08
173 #define EXT2_FLAG_IB_DIRTY 0x10
174 #define EXT2_FLAG_BB_DIRTY 0x20
175 #define EXT2_FLAG_SWAP_BYTES 0x40
176 #define EXT2_FLAG_SWAP_BYTES_READ 0x80
177 #define EXT2_FLAG_SWAP_BYTES_WRITE 0x100
178 #define EXT2_FLAG_MASTER_SB_ONLY 0x200
179 #define EXT2_FLAG_FORCE 0x400
180 #define EXT2_FLAG_SUPER_ONLY 0x800
181 #define EXT2_FLAG_JOURNAL_DEV_OK 0x1000
182 #define EXT2_FLAG_IMAGE_FILE 0x2000
183 #define EXT2_FLAG_EXCLUSIVE 0x4000
184 #define EXT2_FLAG_SOFTSUPP_FEATURES 0x8000
185 #define EXT2_FLAG_NOFREE_ON_ERROR 0x10000
186 #define EXT2_FLAG_64BITS 0x20000
187 #define EXT2_FLAG_PRINT_PROGRESS 0x40000
188 #define EXT2_FLAG_DIRECT_IO 0x80000
189 #define EXT2_FLAG_SKIP_MMP 0x100000
190 #define EXT2_FLAG_IGNORE_CSUM_ERRORS 0x200000
191
192 /*
193 * Special flag in the ext2 inode i_flag field that means that this is
194 * a new inode. (So that ext2_write_inode() can clear extra fields.)
195 */
196 #define EXT2_NEW_INODE_FL 0x80000000
197
198 /*
199 * Flags for mkjournal
200 */
201 #define EXT2_MKJOURNAL_V1_SUPER 0x0000001 /* create V1 superblock (deprecated) */
202 #define EXT2_MKJOURNAL_LAZYINIT 0x0000002 /* don't zero journal inode before use*/
203 #define EXT2_MKJOURNAL_NO_MNT_CHECK 0x0000004 /* don't check mount status */
204
205 struct opaque_ext2_group_desc;
206
207 struct struct_ext2_filsys {
208 errcode_t magic;
209 io_channel io;
210 int flags;
211 char * device_name;
212 struct ext2_super_block * super;
213 unsigned int blocksize;
214 int fragsize;
215 dgrp_t group_desc_count;
216 unsigned long desc_blocks;
217 struct opaque_ext2_group_desc * group_desc;
218 unsigned int inode_blocks_per_group;
219 ext2fs_inode_bitmap inode_map;
220 ext2fs_block_bitmap block_map;
221 /* XXX FIXME-64: not 64-bit safe, but not used? */
222 errcode_t (*get_blocks)(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks);
223 errcode_t (*check_directory)(ext2_filsys fs, ext2_ino_t ino);
224 errcode_t (*write_bitmaps)(ext2_filsys fs);
225 errcode_t (*read_inode)(ext2_filsys fs, ext2_ino_t ino,
226 struct ext2_inode *inode);
227 errcode_t (*write_inode)(ext2_filsys fs, ext2_ino_t ino,
228 struct ext2_inode *inode);
229 ext2_badblocks_list badblocks;
230 ext2_dblist dblist;
231 __u32 stride; /* for mke2fs */
232 struct ext2_super_block * orig_super;
233 struct ext2_image_hdr * image_header;
234 __u32 umask;
235 time_t now;
236 int cluster_ratio_bits;
237 __u16 default_bitmap_type;
238 __u16 pad;
239 /*
240 * Reserved for future expansion
241 */
242 __u32 reserved[5];
243
244 /*
245 * Reserved for the use of the calling application.
246 */
247 void * priv_data;
248
249 /*
250 * Inode cache
251 */
252 struct ext2_inode_cache *icache;
253 io_channel image_io;
254
255 /*
256 * More callback functions
257 */
258 errcode_t (*get_alloc_block)(ext2_filsys fs, blk64_t goal,
259 blk64_t *ret);
260 void (*block_alloc_stats)(ext2_filsys fs, blk64_t blk, int inuse);
261
262 /*
263 * Buffers for Multiple mount protection(MMP) block.
264 */
265 void *mmp_buf;
266 void *mmp_cmp;
267 int mmp_fd;
268
269 /*
270 * Time at which e2fsck last updated the MMP block.
271 */
272 long mmp_last_written;
273
274 /* progress operation functions */
275 struct ext2fs_progress_ops *progress_ops;
276
277 /* Precomputed FS UUID checksum for seeding other checksums */
278 __u32 csum_seed;
279
280 io_channel journal_io;
281 char *journal_name;
282
283 /* New block range allocation hooks */
284 errcode_t (*new_range)(ext2_filsys fs, int flags, blk64_t goal,
285 blk64_t len, blk64_t *pblk, blk64_t *plen);
286 void (*block_alloc_stats_range)(ext2_filsys fs, blk64_t blk, blk_t num,
287 int inuse);
288 };
289
290 #if EXT2_FLAT_INCLUDES
291 #include "e2_bitops.h"
292 #else
293 #include <ext2fs/bitops.h>
294 #endif
295
296 /*
297 * 64-bit bitmap backend types
298 */
299 #define EXT2FS_BMAP64_BITARRAY 1
300 #define EXT2FS_BMAP64_RBTREE 2
301 #define EXT2FS_BMAP64_AUTODIR 3
302
303 /*
304 * Return flags for the block iterator functions
305 */
306 #define BLOCK_CHANGED 1
307 #define BLOCK_ABORT 2
308 #define BLOCK_ERROR 4
309 #define BLOCK_INLINE_DATA_CHANGED 8
310
311 /*
312 * Block interate flags
313 *
314 * BLOCK_FLAG_APPEND, or BLOCK_FLAG_HOLE, indicates that the interator
315 * function should be called on blocks where the block number is zero.
316 * This is used by ext2fs_expand_dir() to be able to add a new block
317 * to an inode. It can also be used for programs that want to be able
318 * to deal with files that contain "holes".
319 *
320 * BLOCK_FLAG_DEPTH_TRAVERSE indicates that the iterator function for
321 * the indirect, doubly indirect, etc. blocks should be called after
322 * all of the blocks containined in the indirect blocks are processed.
323 * This is useful if you are going to be deallocating blocks from an
324 * inode.
325 *
326 * BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be
327 * called for data blocks only.
328 *
329 * BLOCK_FLAG_READ_ONLY is a promise by the caller that it will not
330 * modify returned block number.
331 *
332 * BLOCK_FLAG_NO_LARGE is for internal use only. It informs
333 * ext2fs_block_iterate2 that large files won't be accepted.
334 */
335 #define BLOCK_FLAG_APPEND 1
336 #define BLOCK_FLAG_HOLE 1
337 #define BLOCK_FLAG_DEPTH_TRAVERSE 2
338 #define BLOCK_FLAG_DATA_ONLY 4
339 #define BLOCK_FLAG_READ_ONLY 8
340
341 #define BLOCK_FLAG_NO_LARGE 0x1000
342
343 /*
344 * Magic "block count" return values for the block iterator function.
345 */
346 #define BLOCK_COUNT_IND (-1)
347 #define BLOCK_COUNT_DIND (-2)
348 #define BLOCK_COUNT_TIND (-3)
349 #define BLOCK_COUNT_TRANSLATOR (-4)
350
351 #if 0
352 /*
353 * Flags for ext2fs_move_blocks
354 */
355 #define EXT2_BMOVE_GET_DBLIST 0x0001
356 #define EXT2_BMOVE_DEBUG 0x0002
357 #endif
358
359 /*
360 * Generic (non-filesystem layout specific) extents structure
361 */
362
363 #define EXT2_EXTENT_FLAGS_LEAF 0x0001
364 #define EXT2_EXTENT_FLAGS_UNINIT 0x0002
365 #define EXT2_EXTENT_FLAGS_SECOND_VISIT 0x0004
366
367 struct ext2fs_extent {
368 blk64_t e_pblk; /* first physical block */
369 blk64_t e_lblk; /* first logical block extent covers */
370 __u32 e_len; /* number of blocks covered by extent */
371 __u32 e_flags; /* extent flags */
372 };
373
374 typedef struct ext2_extent_handle *ext2_extent_handle_t;
375 typedef struct ext2_extent_path *ext2_extent_path_t;
376
377 /*
378 * Flags used by ext2fs_extent_get()
379 */
380 #define EXT2_EXTENT_CURRENT 0x0000
381 #define EXT2_EXTENT_MOVE_MASK 0x000F
382 #define EXT2_EXTENT_ROOT 0x0001
383 #define EXT2_EXTENT_LAST_LEAF 0x0002
384 #define EXT2_EXTENT_FIRST_SIB 0x0003
385 #define EXT2_EXTENT_LAST_SIB 0x0004
386 #define EXT2_EXTENT_NEXT_SIB 0x0005
387 #define EXT2_EXTENT_PREV_SIB 0x0006
388 #define EXT2_EXTENT_NEXT_LEAF 0x0007
389 #define EXT2_EXTENT_PREV_LEAF 0x0008
390 #define EXT2_EXTENT_NEXT 0x0009
391 #define EXT2_EXTENT_PREV 0x000A
392 #define EXT2_EXTENT_UP 0x000B
393 #define EXT2_EXTENT_DOWN 0x000C
394 #define EXT2_EXTENT_DOWN_AND_LAST 0x000D
395
396 /*
397 * Flags used by ext2fs_extent_insert()
398 */
399 #define EXT2_EXTENT_INSERT_AFTER 0x0001 /* insert after handle loc'n */
400 #define EXT2_EXTENT_INSERT_NOSPLIT 0x0002 /* insert may not cause split */
401
402 /*
403 * Flags used by ext2fs_extent_delete()
404 */
405 #define EXT2_EXTENT_DELETE_KEEP_EMPTY 0x001 /* keep node if last extnt gone */
406
407 /*
408 * Flags used by ext2fs_extent_set_bmap()
409 */
410 #define EXT2_EXTENT_SET_BMAP_UNINIT 0x0001
411
412 /*
413 * Data structure returned by ext2fs_extent_get_info()
414 */
415 struct ext2_extent_info {
416 int curr_entry;
417 int curr_level;
418 int num_entries;
419 int max_entries;
420 int max_depth;
421 int bytes_avail;
422 blk64_t max_lblk;
423 blk64_t max_pblk;
424 __u32 max_len;
425 __u32 max_uninit_len;
426 };
427
428 /*
429 * Flags for directory block reading and writing functions
430 */
431 #define EXT2_DIRBLOCK_V2_STRUCT 0x0001
432
433 /*
434 * Return flags for the directory iterator functions
435 */
436 #define DIRENT_CHANGED 1
437 #define DIRENT_ABORT 2
438 #define DIRENT_ERROR 3
439
440 /*
441 * Directory iterator flags
442 */
443
444 #define DIRENT_FLAG_INCLUDE_EMPTY 1
445 #define DIRENT_FLAG_INCLUDE_REMOVED 2
446 #define DIRENT_FLAG_INCLUDE_CSUM 4
447 #define DIRENT_FLAG_INCLUDE_INLINE_DATA 8
448
449 #define DIRENT_DOT_FILE 1
450 #define DIRENT_DOT_DOT_FILE 2
451 #define DIRENT_OTHER_FILE 3
452 #define DIRENT_DELETED_FILE 4
453 #define DIRENT_CHECKSUM 5
454
455 /*
456 * Inode scan definitions
457 */
458 typedef struct ext2_struct_inode_scan *ext2_inode_scan;
459
460 /*
461 * ext2fs_scan flags
462 */
463 #define EXT2_SF_CHK_BADBLOCKS 0x0001
464 #define EXT2_SF_BAD_INODE_BLK 0x0002
465 #define EXT2_SF_BAD_EXTRA_BYTES 0x0004
466 #define EXT2_SF_SKIP_MISSING_ITABLE 0x0008
467 #define EXT2_SF_DO_LAZY 0x0010
468 #define EXT2_SF_WARN_GARBAGE_INODES 0x0020
469
470 /*
471 * ext2fs_check_if_mounted flags
472 */
473 #define EXT2_MF_MOUNTED 1
474 #define EXT2_MF_ISROOT 2
475 #define EXT2_MF_READONLY 4
476 #define EXT2_MF_SWAP 8
477 #define EXT2_MF_BUSY 16
478
479 /*
480 * Ext2/linux mode flags. We define them here so that we don't need
481 * to depend on the OS's sys/stat.h, since we may be compiling on a
482 * non-Linux system.
483 */
484 #define LINUX_S_IFMT 00170000
485 #define LINUX_S_IFSOCK 0140000
486 #define LINUX_S_IFLNK 0120000
487 #define LINUX_S_IFREG 0100000
488 #define LINUX_S_IFBLK 0060000
489 #define LINUX_S_IFDIR 0040000
490 #define LINUX_S_IFCHR 0020000
491 #define LINUX_S_IFIFO 0010000
492 #define LINUX_S_ISUID 0004000
493 #define LINUX_S_ISGID 0002000
494 #define LINUX_S_ISVTX 0001000
495
496 #define LINUX_S_IRWXU 00700
497 #define LINUX_S_IRUSR 00400
498 #define LINUX_S_IWUSR 00200
499 #define LINUX_S_IXUSR 00100
500
501 #define LINUX_S_IRWXG 00070
502 #define LINUX_S_IRGRP 00040
503 #define LINUX_S_IWGRP 00020
504 #define LINUX_S_IXGRP 00010
505
506 #define LINUX_S_IRWXO 00007
507 #define LINUX_S_IROTH 00004
508 #define LINUX_S_IWOTH 00002
509 #define LINUX_S_IXOTH 00001
510
511 #define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK)
512 #define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG)
513 #define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR)
514 #define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR)
515 #define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK)
516 #define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO)
517 #define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK)
518
519 /*
520 * ext2 size of an inode
521 */
522 #define EXT2_I_SIZE(i) ((i)->i_size | ((__u64) (i)->i_size_high << 32))
523
524 /*
525 * ext2_icount_t abstraction
526 */
527 #define EXT2_ICOUNT_OPT_INCREMENT 0x01
528
529 typedef struct ext2_icount *ext2_icount_t;
530
531 /*
532 * Flags for ext2fs_bmap
533 */
534 #define BMAP_ALLOC 0x0001
535 #define BMAP_SET 0x0002
536 #define BMAP_UNINIT 0x0004
537 #define BMAP_ZERO 0x0008
538
539 /*
540 * Returned flags from ext2fs_bmap
541 */
542 #define BMAP_RET_UNINIT 0x0001
543
544 /*
545 * Flags for imager.c functions
546 */
547 #define IMAGER_FLAG_INODEMAP 1
548 #define IMAGER_FLAG_SPARSEWRITE 2
549
550 /*
551 * For checking structure magic numbers...
552 */
553
554 #define EXT2_CHECK_MAGIC(struct, code) \
555 if ((struct)->magic != (code)) return (code)
556
557 /*
558 * Features supported by this version of the library
559 */
560 #define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\
561 EXT2_FEATURE_COMPAT_IMAGIC_INODES|\
562 EXT3_FEATURE_COMPAT_HAS_JOURNAL|\
563 EXT2_FEATURE_COMPAT_RESIZE_INODE|\
564 EXT2_FEATURE_COMPAT_DIR_INDEX|\
565 EXT2_FEATURE_COMPAT_EXT_ATTR|\
566 EXT4_FEATURE_COMPAT_SPARSE_SUPER2)
567
568 #ifdef CONFIG_MMP
569 #define EXT4_LIB_INCOMPAT_MMP EXT4_FEATURE_INCOMPAT_MMP
570 #else
571 #define EXT4_LIB_INCOMPAT_MMP (0)
572 #endif
573
574 #define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\
575 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\
576 EXT2_FEATURE_INCOMPAT_META_BG|\
577 EXT3_FEATURE_INCOMPAT_RECOVER|\
578 EXT3_FEATURE_INCOMPAT_EXTENTS|\
579 EXT4_FEATURE_INCOMPAT_FLEX_BG|\
580 EXT4_LIB_INCOMPAT_MMP|\
581 EXT4_FEATURE_INCOMPAT_64BIT|\
582 EXT4_FEATURE_INCOMPAT_INLINE_DATA|\
583 EXT4_FEATURE_INCOMPAT_ENCRYPT|\
584 EXT4_FEATURE_INCOMPAT_CSUM_SEED)
585
586 #define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\
587 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|\
588 EXT2_FEATURE_RO_COMPAT_LARGE_FILE|\
589 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|\
590 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|\
591 EXT4_FEATURE_RO_COMPAT_GDT_CSUM|\
592 EXT4_FEATURE_RO_COMPAT_BIGALLOC|\
593 EXT4_FEATURE_RO_COMPAT_QUOTA|\
594 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM|\
595 EXT4_FEATURE_RO_COMPAT_READONLY |\
596 EXT4_FEATURE_RO_COMPAT_PROJECT)
597
598 /*
599 * These features are only allowed if EXT2_FLAG_SOFTSUPP_FEATURES is passed
600 * to ext2fs_openfs()
601 */
602 #define EXT2_LIB_SOFTSUPP_INCOMPAT (0)
603 #define EXT2_LIB_SOFTSUPP_RO_COMPAT (EXT4_FEATURE_RO_COMPAT_REPLICA)
604
605
606 /* Translate a block number to a cluster number */
607 #define EXT2FS_CLUSTER_RATIO(fs) (1 << (fs)->cluster_ratio_bits)
608 #define EXT2FS_CLUSTER_MASK(fs) (EXT2FS_CLUSTER_RATIO(fs) - 1)
609 #define EXT2FS_B2C(fs, blk) ((blk) >> (fs)->cluster_ratio_bits)
610 /* Translate a cluster number to a block number */
611 #define EXT2FS_C2B(fs, cluster) ((cluster) << (fs)->cluster_ratio_bits)
612 /* Translate # of blks to # of clusters */
613 #define EXT2FS_NUM_B2C(fs, blks) (((blks) + EXT2FS_CLUSTER_MASK(fs)) >> \
614 (fs)->cluster_ratio_bits)
615
616 #if defined(HAVE_FSTAT64) && !defined(__OSX_AVAILABLE_BUT_DEPRECATED)
617 typedef struct stat64 ext2fs_struct_stat;
618 #else
619 typedef struct stat ext2fs_struct_stat;
620 #endif
621
622 /*
623 * For ext2fs_close2() and ext2fs_flush2(), this flag allows you to
624 * avoid the fsync call.
625 */
626 #define EXT2_FLAG_FLUSH_NO_SYNC 1
627
628 /*
629 * Modify and iterate extended attributes
630 */
631 struct ext2_xattr_handle;
632 #define XATTR_ABORT 1
633 #define XATTR_CHANGED 2
634
635 /*
636 * function prototypes
637 */
638 static inline int ext2fs_has_group_desc_csum(ext2_filsys fs)
639 {
640 return ext2fs_has_feature_metadata_csum(fs->super) ||
641 ext2fs_has_feature_gdt_csum(fs->super);
642 }
643
644 /* The LARGE_FILE feature should be set if we have stored files 2GB+ in size */
645 static inline int ext2fs_needs_large_file_feature(unsigned long long file_size)
646 {
647 return file_size >= 0x80000000ULL;
648 }
649
650 /* alloc.c */
651 extern void ext2fs_clear_block_uninit(ext2_filsys fs, dgrp_t group);
652 extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode,
653 ext2fs_inode_bitmap map, ext2_ino_t *ret);
654 extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal,
655 ext2fs_block_bitmap map, blk_t *ret);
656 extern errcode_t ext2fs_new_block2(ext2_filsys fs, blk64_t goal,
657 ext2fs_block_bitmap map, blk64_t *ret);
658 extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start,
659 blk_t finish, int num,
660 ext2fs_block_bitmap map,
661 blk_t *ret);
662 extern errcode_t ext2fs_get_free_blocks2(ext2_filsys fs, blk64_t start,
663 blk64_t finish, int num,
664 ext2fs_block_bitmap map,
665 blk64_t *ret);
666 extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal,
667 char *block_buf, blk_t *ret);
668 extern errcode_t ext2fs_alloc_block2(ext2_filsys fs, blk64_t goal,
669 char *block_buf, blk64_t *ret);
670 extern void ext2fs_set_alloc_block_callback(ext2_filsys fs,
671 errcode_t (*func)(ext2_filsys fs,
672 blk64_t goal,
673 blk64_t *ret),
674 errcode_t (**old)(ext2_filsys fs,
675 blk64_t goal,
676 blk64_t *ret));
677 blk64_t ext2fs_find_inode_goal(ext2_filsys fs, ext2_ino_t ino,
678 struct ext2_inode *inode, blk64_t lblk);
679 extern void ext2fs_set_new_range_callback(ext2_filsys fs,
680 errcode_t (*func)(ext2_filsys fs, int flags, blk64_t goal,
681 blk64_t len, blk64_t *pblk, blk64_t *plen),
682 errcode_t (**old)(ext2_filsys fs, int flags, blk64_t goal,
683 blk64_t len, blk64_t *pblk, blk64_t *plen));
684 extern void ext2fs_set_block_alloc_stats_range_callback(ext2_filsys fs,
685 void (*func)(ext2_filsys fs, blk64_t blk,
686 blk_t num, int inuse),
687 void (**old)(ext2_filsys fs, blk64_t blk,
688 blk_t num, int inuse));
689 #define EXT2_NEWRANGE_FIXED_GOAL (0x1)
690 #define EXT2_NEWRANGE_MIN_LENGTH (0x2)
691 #define EXT2_NEWRANGE_ALL_FLAGS (0x3)
692 errcode_t ext2fs_new_range(ext2_filsys fs, int flags, blk64_t goal,
693 blk64_t len, ext2fs_block_bitmap map, blk64_t *pblk,
694 blk64_t *plen);
695 #define EXT2_ALLOCRANGE_FIXED_GOAL (0x1)
696 #define EXT2_ALLOCRANGE_ZERO_BLOCKS (0x2)
697 #define EXT2_ALLOCRANGE_ALL_FLAGS (0x3)
698 errcode_t ext2fs_alloc_range(ext2_filsys fs, int flags, blk64_t goal,
699 blk_t len, blk64_t *ret);
700
701 /* alloc_sb.c */
702 extern int ext2fs_reserve_super_and_bgd(ext2_filsys fs,
703 dgrp_t group,
704 ext2fs_block_bitmap bmap);
705 extern void ext2fs_set_block_alloc_stats_callback(ext2_filsys fs,
706 void (*func)(ext2_filsys fs,
707 blk64_t blk,
708 int inuse),
709 void (**old)(ext2_filsys fs,
710 blk64_t blk,
711 int inuse));
712
713 /* alloc_stats.c */
714 void ext2fs_inode_alloc_stats(ext2_filsys fs, ext2_ino_t ino, int inuse);
715 void ext2fs_inode_alloc_stats2(ext2_filsys fs, ext2_ino_t ino,
716 int inuse, int isdir);
717 void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse);
718 void ext2fs_block_alloc_stats2(ext2_filsys fs, blk64_t blk, int inuse);
719 void ext2fs_block_alloc_stats_range(ext2_filsys fs, blk64_t blk,
720 blk_t num, int inuse);
721
722 /* alloc_tables.c */
723 extern errcode_t ext2fs_allocate_tables(ext2_filsys fs);
724 extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group,
725 ext2fs_block_bitmap bmap);
726
727 /* badblocks.c */
728 extern errcode_t ext2fs_u32_list_create(ext2_u32_list *ret, int size);
729 extern errcode_t ext2fs_u32_list_add(ext2_u32_list bb, __u32 blk);
730 extern int ext2fs_u32_list_find(ext2_u32_list bb, __u32 blk);
731 extern int ext2fs_u32_list_test(ext2_u32_list bb, blk_t blk);
732 extern errcode_t ext2fs_u32_list_iterate_begin(ext2_u32_list bb,
733 ext2_u32_iterate *ret);
734 extern int ext2fs_u32_list_iterate(ext2_u32_iterate iter, blk_t *blk);
735 extern void ext2fs_u32_list_iterate_end(ext2_u32_iterate iter);
736 extern errcode_t ext2fs_u32_copy(ext2_u32_list src, ext2_u32_list *dest);
737 extern int ext2fs_u32_list_equal(ext2_u32_list bb1, ext2_u32_list bb2);
738
739 extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret,
740 int size);
741 extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb,
742 blk_t blk);
743 extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb,
744 blk_t blk);
745 extern int ext2fs_u32_list_del(ext2_u32_list bb, __u32 blk);
746 extern void ext2fs_badblocks_list_del(ext2_u32_list bb, __u32 blk);
747 extern errcode_t
748 ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb,
749 ext2_badblocks_iterate *ret);
750 extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter,
751 blk_t *blk);
752 extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter);
753 extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src,
754 ext2_badblocks_list *dest);
755 extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1,
756 ext2_badblocks_list bb2);
757 extern int ext2fs_u32_list_count(ext2_u32_list bb);
758
759 /* bb_compat */
760 extern errcode_t badblocks_list_create(badblocks_list *ret, int size);
761 extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk);
762 extern int badblocks_list_test(badblocks_list bb, blk_t blk);
763 extern errcode_t badblocks_list_iterate_begin(badblocks_list bb,
764 badblocks_iterate *ret);
765 extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk);
766 extern void badblocks_list_iterate_end(badblocks_iterate iter);
767 extern void badblocks_list_free(badblocks_list bb);
768
769 /* bb_inode.c */
770 extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs,
771 ext2_badblocks_list bb_list);
772
773 /* bitmaps.c */
774 extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap);
775 extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap);
776 extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src,
777 ext2fs_generic_bitmap *dest);
778 extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs);
779 extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs);
780 extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs);
781 extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs);
782 extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs,
783 const char *descr,
784 ext2fs_block_bitmap *ret);
785 extern errcode_t ext2fs_allocate_subcluster_bitmap(ext2_filsys fs,
786 const char *descr,
787 ext2fs_block_bitmap *ret);
788 extern int ext2fs_get_bitmap_granularity(ext2fs_block_bitmap bitmap);
789 extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs,
790 const char *descr,
791 ext2fs_inode_bitmap *ret);
792 extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap,
793 ext2_ino_t end, ext2_ino_t *oend);
794 extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap,
795 blk_t end, blk_t *oend);
796 extern errcode_t ext2fs_fudge_block_bitmap_end2(ext2fs_block_bitmap bitmap,
797 blk64_t end, blk64_t *oend);
798 extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap);
799 extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap);
800 extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs);
801 extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs);
802 extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end,
803 ext2fs_inode_bitmap bmap);
804 extern errcode_t ext2fs_resize_inode_bitmap2(__u64 new_end,
805 __u64 new_real_end,
806 ext2fs_inode_bitmap bmap);
807 extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end,
808 ext2fs_block_bitmap bmap);
809 extern errcode_t ext2fs_resize_block_bitmap2(__u64 new_end,
810 __u64 new_real_end,
811 ext2fs_block_bitmap bmap);
812 extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1,
813 ext2fs_block_bitmap bm2);
814 extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1,
815 ext2fs_inode_bitmap bm2);
816 extern errcode_t ext2fs_set_inode_bitmap_range(ext2fs_inode_bitmap bmap,
817 ext2_ino_t start, unsigned int num,
818 void *in);
819 extern errcode_t ext2fs_set_inode_bitmap_range2(ext2fs_inode_bitmap bmap,
820 __u64 start, size_t num,
821 void *in);
822 extern errcode_t ext2fs_get_inode_bitmap_range(ext2fs_inode_bitmap bmap,
823 ext2_ino_t start, unsigned int num,
824 void *out);
825 extern errcode_t ext2fs_get_inode_bitmap_range2(ext2fs_inode_bitmap bmap,
826 __u64 start, size_t num,
827 void *out);
828 extern errcode_t ext2fs_set_block_bitmap_range(ext2fs_block_bitmap bmap,
829 blk_t start, unsigned int num,
830 void *in);
831 extern errcode_t ext2fs_set_block_bitmap_range2(ext2fs_block_bitmap bmap,
832 blk64_t start, size_t num,
833 void *in);
834 extern errcode_t ext2fs_get_block_bitmap_range(ext2fs_block_bitmap bmap,
835 blk_t start, unsigned int num,
836 void *out);
837 extern errcode_t ext2fs_get_block_bitmap_range2(ext2fs_block_bitmap bmap,
838 blk64_t start, size_t num,
839 void *out);
840
841 /* blknum.c */
842 extern __u32 ext2fs_inode_bitmap_checksum(ext2_filsys fs, dgrp_t group);
843 extern __u32 ext2fs_block_bitmap_checksum(ext2_filsys fs, dgrp_t group);
844 extern dgrp_t ext2fs_group_of_blk2(ext2_filsys fs, blk64_t);
845 extern blk64_t ext2fs_group_first_block2(ext2_filsys fs, dgrp_t group);
846 extern blk64_t ext2fs_group_last_block2(ext2_filsys fs, dgrp_t group);
847 extern int ext2fs_group_blocks_count(ext2_filsys fs, dgrp_t group);
848 extern blk64_t ext2fs_inode_data_blocks2(ext2_filsys fs,
849 struct ext2_inode *inode);
850 extern blk64_t ext2fs_inode_i_blocks(ext2_filsys fs,
851 struct ext2_inode *inode);
852 extern blk64_t ext2fs_blocks_count(struct ext2_super_block *super);
853 extern void ext2fs_blocks_count_set(struct ext2_super_block *super,
854 blk64_t blk);
855 extern void ext2fs_blocks_count_add(struct ext2_super_block *super,
856 blk64_t blk);
857 extern blk64_t ext2fs_r_blocks_count(struct ext2_super_block *super);
858 extern void ext2fs_r_blocks_count_set(struct ext2_super_block *super,
859 blk64_t blk);
860 extern void ext2fs_r_blocks_count_add(struct ext2_super_block *super,
861 blk64_t blk);
862 extern blk64_t ext2fs_free_blocks_count(struct ext2_super_block *super);
863 extern void ext2fs_free_blocks_count_set(struct ext2_super_block *super,
864 blk64_t blk);
865 extern void ext2fs_free_blocks_count_add(struct ext2_super_block *super,
866 blk64_t blk);
867 /* Block group descriptor accessor functions */
868 extern struct ext2_group_desc *ext2fs_group_desc(ext2_filsys fs,
869 struct opaque_ext2_group_desc *gdp,
870 dgrp_t group);
871 extern blk64_t ext2fs_block_bitmap_csum(ext2_filsys fs, dgrp_t group);
872 extern blk64_t ext2fs_block_bitmap_loc(ext2_filsys fs, dgrp_t group);
873 extern void ext2fs_block_bitmap_loc_set(ext2_filsys fs, dgrp_t group,
874 blk64_t blk);
875 extern __u32 ext2fs_inode_bitmap_csum(ext2_filsys fs, dgrp_t group);
876 extern blk64_t ext2fs_inode_bitmap_loc(ext2_filsys fs, dgrp_t group);
877 extern void ext2fs_inode_bitmap_loc_set(ext2_filsys fs, dgrp_t group,
878 blk64_t blk);
879 extern blk64_t ext2fs_inode_table_loc(ext2_filsys fs, dgrp_t group);
880 extern void ext2fs_inode_table_loc_set(ext2_filsys fs, dgrp_t group,
881 blk64_t blk);
882 extern __u32 ext2fs_bg_free_blocks_count(ext2_filsys fs, dgrp_t group);
883 extern void ext2fs_bg_free_blocks_count_set(ext2_filsys fs, dgrp_t group,
884 __u32 n);
885 extern __u32 ext2fs_bg_free_inodes_count(ext2_filsys fs, dgrp_t group);
886 extern void ext2fs_bg_free_inodes_count_set(ext2_filsys fs, dgrp_t group,
887 __u32 n);
888 extern __u32 ext2fs_bg_used_dirs_count(ext2_filsys fs, dgrp_t group);
889 extern void ext2fs_bg_used_dirs_count_set(ext2_filsys fs, dgrp_t group,
890 __u32 n);
891 extern __u32 ext2fs_bg_itable_unused(ext2_filsys fs, dgrp_t group);
892 extern void ext2fs_bg_itable_unused_set(ext2_filsys fs, dgrp_t group,
893 __u32 n);
894 extern __u16 ext2fs_bg_flags(ext2_filsys fs, dgrp_t group);
895 extern void ext2fs_bg_flags_zap(ext2_filsys fs, dgrp_t group);
896 extern int ext2fs_bg_flags_test(ext2_filsys fs, dgrp_t group, __u16 bg_flag);
897 extern void ext2fs_bg_flags_set(ext2_filsys fs, dgrp_t group, __u16 bg_flags);
898 extern void ext2fs_bg_flags_clear(ext2_filsys fs, dgrp_t group, __u16 bg_flags);
899 extern __u16 ext2fs_bg_checksum(ext2_filsys fs, dgrp_t group);
900 extern void ext2fs_bg_checksum_set(ext2_filsys fs, dgrp_t group, __u16 checksum);
901 extern blk64_t ext2fs_file_acl_block(ext2_filsys fs,
902 const struct ext2_inode *inode);
903 extern void ext2fs_file_acl_block_set(ext2_filsys fs,
904 struct ext2_inode *inode, blk64_t blk);
905 extern errcode_t ext2fs_inode_size_set(ext2_filsys fs, struct ext2_inode *inode,
906 ext2_off64_t size);
907
908 /* block.c */
909 extern errcode_t ext2fs_block_iterate(ext2_filsys fs,
910 ext2_ino_t ino,
911 int flags,
912 char *block_buf,
913 int (*func)(ext2_filsys fs,
914 blk_t *blocknr,
915 int blockcnt,
916 void *priv_data),
917 void *priv_data);
918 errcode_t ext2fs_block_iterate2(ext2_filsys fs,
919 ext2_ino_t ino,
920 int flags,
921 char *block_buf,
922 int (*func)(ext2_filsys fs,
923 blk_t *blocknr,
924 e2_blkcnt_t blockcnt,
925 blk_t ref_blk,
926 int ref_offset,
927 void *priv_data),
928 void *priv_data);
929 errcode_t ext2fs_block_iterate3(ext2_filsys fs,
930 ext2_ino_t ino,
931 int flags,
932 char *block_buf,
933 int (*func)(ext2_filsys fs,
934 blk64_t *blocknr,
935 e2_blkcnt_t blockcnt,
936 blk64_t ref_blk,
937 int ref_offset,
938 void *priv_data),
939 void *priv_data);
940
941 /* bmap.c */
942 extern errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino,
943 struct ext2_inode *inode,
944 char *block_buf, int bmap_flags,
945 blk_t block, blk_t *phys_blk);
946 extern errcode_t ext2fs_bmap2(ext2_filsys fs, ext2_ino_t ino,
947 struct ext2_inode *inode,
948 char *block_buf, int bmap_flags, blk64_t block,
949 int *ret_flags, blk64_t *phys_blk);
950 errcode_t ext2fs_map_cluster_block(ext2_filsys fs, ext2_ino_t ino,
951 struct ext2_inode *inode, blk64_t lblk,
952 blk64_t *pblk);
953
954 #if 0
955 /* bmove.c */
956 extern errcode_t ext2fs_move_blocks(ext2_filsys fs,
957 ext2fs_block_bitmap reserve,
958 ext2fs_block_bitmap alloc_map,
959 int flags);
960 #endif
961
962 /* check_desc.c */
963 extern errcode_t ext2fs_check_desc(ext2_filsys fs);
964
965 /* closefs.c */
966 extern errcode_t ext2fs_close(ext2_filsys fs);
967 extern errcode_t ext2fs_close2(ext2_filsys fs, int flags);
968 extern errcode_t ext2fs_close_free(ext2_filsys *fs);
969 extern errcode_t ext2fs_flush(ext2_filsys fs);
970 extern errcode_t ext2fs_flush2(ext2_filsys fs, int flags);
971 extern int ext2fs_bg_has_super(ext2_filsys fs, dgrp_t group_block);
972 extern errcode_t ext2fs_super_and_bgd_loc2(ext2_filsys fs,
973 dgrp_t group,
974 blk64_t *ret_super_blk,
975 blk64_t *ret_old_desc_blk,
976 blk64_t *ret_new_desc_blk,
977 blk_t *ret_used_blks);
978 extern int ext2fs_super_and_bgd_loc(ext2_filsys fs,
979 dgrp_t group,
980 blk_t *ret_super_blk,
981 blk_t *ret_old_desc_blk,
982 blk_t *ret_new_desc_blk,
983 int *ret_meta_bg);
984 extern void ext2fs_update_dynamic_rev(ext2_filsys fs);
985
986 /* crc32c.c */
987 extern __u32 ext2fs_crc32_be(__u32 crc, unsigned char const *p, size_t len);
988 extern __u32 ext2fs_crc32c_le(__u32 crc, unsigned char const *p, size_t len);
989
990 /* csum.c */
991 extern void ext2fs_init_csum_seed(ext2_filsys fs);
992 extern errcode_t ext2fs_mmp_csum_set(ext2_filsys fs, struct mmp_struct *mmp);
993 extern int ext2fs_mmp_csum_verify(ext2_filsys, struct mmp_struct *mmp);
994 extern int ext2fs_verify_csum_type(ext2_filsys fs, struct ext2_super_block *sb);
995 extern errcode_t ext2fs_superblock_csum_set(ext2_filsys fs,
996 struct ext2_super_block *sb);
997 extern int ext2fs_superblock_csum_verify(ext2_filsys fs,
998 struct ext2_super_block *sb);
999 extern errcode_t ext2fs_ext_attr_block_csum_set(ext2_filsys fs,
1000 ext2_ino_t inum, blk64_t block,
1001 struct ext2_ext_attr_header *hdr);
1002 extern int ext2fs_ext_attr_block_csum_verify(ext2_filsys fs, ext2_ino_t inum,
1003 blk64_t block,
1004 struct ext2_ext_attr_header *hdr);
1005 #define EXT2_DIRENT_TAIL(block, blocksize) \
1006 ((struct ext2_dir_entry_tail *)(((char *)(block)) + \
1007 (blocksize) - sizeof(struct ext2_dir_entry_tail)))
1008
1009 extern void ext2fs_initialize_dirent_tail(ext2_filsys fs,
1010 struct ext2_dir_entry_tail *t);
1011 extern int ext2fs_dirent_has_tail(ext2_filsys fs,
1012 struct ext2_dir_entry *dirent);
1013 extern int ext2fs_dirent_csum_verify(ext2_filsys fs, ext2_ino_t inum,
1014 struct ext2_dir_entry *dirent);
1015 extern int ext2fs_dir_block_csum_verify(ext2_filsys fs, ext2_ino_t inum,
1016 struct ext2_dir_entry *dirent);
1017 extern errcode_t ext2fs_dir_block_csum_set(ext2_filsys fs, ext2_ino_t inum,
1018 struct ext2_dir_entry *dirent);
1019 extern errcode_t ext2fs_get_dx_countlimit(ext2_filsys fs,
1020 struct ext2_dir_entry *dirent,
1021 struct ext2_dx_countlimit **cc,
1022 int *offset);
1023 extern errcode_t ext2fs_extent_block_csum_set(ext2_filsys fs,
1024 ext2_ino_t inum,
1025 struct ext3_extent_header *eh);
1026 extern int ext2fs_extent_block_csum_verify(ext2_filsys fs,
1027 ext2_ino_t inum,
1028 struct ext3_extent_header *eh);
1029 extern errcode_t ext2fs_block_bitmap_csum_set(ext2_filsys fs, dgrp_t group,
1030 char *bitmap, int size);
1031 extern int ext2fs_block_bitmap_csum_verify(ext2_filsys fs, dgrp_t group,
1032 char *bitmap, int size);
1033 extern errcode_t ext2fs_inode_bitmap_csum_set(ext2_filsys fs, dgrp_t group,
1034 char *bitmap, int size);
1035 extern int ext2fs_inode_bitmap_csum_verify(ext2_filsys fs, dgrp_t group,
1036 char *bitmap, int size);
1037 extern errcode_t ext2fs_inode_csum_set(ext2_filsys fs, ext2_ino_t inum,
1038 struct ext2_inode_large *inode);
1039 extern int ext2fs_inode_csum_verify(ext2_filsys fs, ext2_ino_t inum,
1040 struct ext2_inode_large *inode);
1041 extern void ext2fs_group_desc_csum_set(ext2_filsys fs, dgrp_t group);
1042 extern int ext2fs_group_desc_csum_verify(ext2_filsys fs, dgrp_t group);
1043 extern errcode_t ext2fs_set_gdt_csum(ext2_filsys fs);
1044 extern __u16 ext2fs_group_desc_csum(ext2_filsys fs, dgrp_t group);
1045
1046 /* dblist.c */
1047 extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist);
1048 extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ext2_ino_t ino,
1049 blk_t blk, int blockcnt);
1050 extern errcode_t ext2fs_add_dir_block2(ext2_dblist dblist, ext2_ino_t ino,
1051 blk64_t blk, e2_blkcnt_t blockcnt);
1052 extern void ext2fs_dblist_sort(ext2_dblist dblist,
1053 EXT2_QSORT_TYPE (*sortfunc)(const void *,
1054 const void *));
1055 extern void ext2fs_dblist_sort2(ext2_dblist dblist,
1056 EXT2_QSORT_TYPE (*sortfunc)(const void *,
1057 const void *));
1058 extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist,
1059 int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info,
1060 void *priv_data),
1061 void *priv_data);
1062 extern errcode_t ext2fs_dblist_iterate2(ext2_dblist dblist,
1063 int (*func)(ext2_filsys fs, struct ext2_db_entry2 *db_info,
1064 void *priv_data),
1065 void *priv_data);
1066 extern errcode_t ext2fs_dblist_iterate3(ext2_dblist dblist,
1067 int (*func)(ext2_filsys fs, struct ext2_db_entry2 *db_info,
1068 void *priv_data),
1069 unsigned long long start,
1070 unsigned long long count,
1071 void *priv_data);
1072 extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ext2_ino_t ino,
1073 blk_t blk, int blockcnt);
1074 extern errcode_t ext2fs_set_dir_block2(ext2_dblist dblist, ext2_ino_t ino,
1075 blk64_t blk, e2_blkcnt_t blockcnt);
1076 extern errcode_t ext2fs_copy_dblist(ext2_dblist src,
1077 ext2_dblist *dest);
1078 extern int ext2fs_dblist_count(ext2_dblist dblist);
1079 extern blk64_t ext2fs_dblist_count2(ext2_dblist dblist);
1080 extern errcode_t ext2fs_dblist_get_last(ext2_dblist dblist,
1081 struct ext2_db_entry **entry);
1082 extern errcode_t ext2fs_dblist_get_last2(ext2_dblist dblist,
1083 struct ext2_db_entry2 **entry);
1084 extern errcode_t ext2fs_dblist_drop_last(ext2_dblist dblist);
1085
1086 /* dblist_dir.c */
1087 extern errcode_t
1088 ext2fs_dblist_dir_iterate(ext2_dblist dblist,
1089 int flags,
1090 char *block_buf,
1091 int (*func)(ext2_ino_t dir,
1092 int entry,
1093 struct ext2_dir_entry *dirent,
1094 int offset,
1095 int blocksize,
1096 char *buf,
1097 void *priv_data),
1098 void *priv_data);
1099
1100 #if 0
1101 /* digest_encode.c */
1102 #define EXT2FS_DIGEST_SIZE EXT2FS_SHA256_LENGTH
1103 extern int ext2fs_digest_encode(const char *src, int len, char *dst);
1104 extern int ext2fs_digest_decode(const char *src, int len, char *dst);
1105 #endif
1106
1107 /* dirblock.c */
1108 extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block,
1109 void *buf);
1110 extern errcode_t ext2fs_read_dir_block2(ext2_filsys fs, blk_t block,
1111 void *buf, int flags);
1112 extern errcode_t ext2fs_read_dir_block3(ext2_filsys fs, blk64_t block,
1113 void *buf, int flags);
1114 extern errcode_t ext2fs_read_dir_block4(ext2_filsys fs, blk64_t block,
1115 void *buf, int flags, ext2_ino_t ino);
1116 extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block,
1117 void *buf);
1118 extern errcode_t ext2fs_write_dir_block2(ext2_filsys fs, blk_t block,
1119 void *buf, int flags);
1120 extern errcode_t ext2fs_write_dir_block3(ext2_filsys fs, blk64_t block,
1121 void *buf, int flags);
1122 extern errcode_t ext2fs_write_dir_block4(ext2_filsys fs, blk64_t block,
1123 void *buf, int flags, ext2_ino_t ino);
1124
1125 /* dirhash.c */
1126 extern errcode_t ext2fs_dirhash(int version, const char *name, int len,
1127 const __u32 *seed,
1128 ext2_dirhash_t *ret_hash,
1129 ext2_dirhash_t *ret_minor_hash);
1130
1131
1132 /* dir_iterate.c */
1133 extern errcode_t ext2fs_get_rec_len(ext2_filsys fs,
1134 struct ext2_dir_entry *dirent,
1135 unsigned int *rec_len);
1136 extern errcode_t ext2fs_set_rec_len(ext2_filsys fs,
1137 unsigned int len,
1138 struct ext2_dir_entry *dirent);
1139 extern errcode_t ext2fs_dir_iterate(ext2_filsys fs,
1140 ext2_ino_t dir,
1141 int flags,
1142 char *block_buf,
1143 int (*func)(struct ext2_dir_entry *dirent,
1144 int offset,
1145 int blocksize,
1146 char *buf,
1147 void *priv_data),
1148 void *priv_data);
1149 extern errcode_t ext2fs_dir_iterate2(ext2_filsys fs,
1150 ext2_ino_t dir,
1151 int flags,
1152 char *block_buf,
1153 int (*func)(ext2_ino_t dir,
1154 int entry,
1155 struct ext2_dir_entry *dirent,
1156 int offset,
1157 int blocksize,
1158 char *buf,
1159 void *priv_data),
1160 void *priv_data);
1161
1162 /* dupfs.c */
1163 extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest);
1164
1165 /* expanddir.c */
1166 extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir);
1167
1168 /* ext_attr.c */
1169 extern __u32 ext2fs_ext_attr_hash_entry(struct ext2_ext_attr_entry *entry,
1170 void *data);
1171 extern errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf);
1172 extern errcode_t ext2fs_read_ext_attr2(ext2_filsys fs, blk64_t block,
1173 void *buf);
1174 extern errcode_t ext2fs_read_ext_attr3(ext2_filsys fs, blk64_t block,
1175 void *buf, ext2_ino_t inum);
1176 extern errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block,
1177 void *buf);
1178 extern errcode_t ext2fs_write_ext_attr2(ext2_filsys fs, blk64_t block,
1179 void *buf);
1180 extern errcode_t ext2fs_write_ext_attr3(ext2_filsys fs, blk64_t block,
1181 void *buf, ext2_ino_t inum);
1182 extern errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk,
1183 char *block_buf,
1184 int adjust, __u32 *newcount);
1185 extern errcode_t ext2fs_adjust_ea_refcount2(ext2_filsys fs, blk64_t blk,
1186 char *block_buf,
1187 int adjust, __u32 *newcount);
1188 extern errcode_t ext2fs_adjust_ea_refcount3(ext2_filsys fs, blk64_t blk,
1189 char *block_buf,
1190 int adjust, __u32 *newcount,
1191 ext2_ino_t inum);
1192 errcode_t ext2fs_xattrs_write(struct ext2_xattr_handle *handle);
1193 errcode_t ext2fs_xattrs_read(struct ext2_xattr_handle *handle);
1194 errcode_t ext2fs_xattrs_iterate(struct ext2_xattr_handle *h,
1195 int (*func)(char *name, char *value,
1196 size_t value_len, void *data),
1197 void *data);
1198 errcode_t ext2fs_xattr_get(struct ext2_xattr_handle *h, const char *key,
1199 void **value, size_t *value_len);
1200 errcode_t ext2fs_xattr_set(struct ext2_xattr_handle *handle,
1201 const char *key,
1202 const void *value,
1203 size_t value_len);
1204 errcode_t ext2fs_xattr_remove(struct ext2_xattr_handle *handle,
1205 const char *key);
1206 errcode_t ext2fs_xattrs_open(ext2_filsys fs, ext2_ino_t ino,
1207 struct ext2_xattr_handle **handle);
1208 errcode_t ext2fs_xattrs_close(struct ext2_xattr_handle **handle);
1209 errcode_t ext2fs_free_ext_attr(ext2_filsys fs, ext2_ino_t ino,
1210 struct ext2_inode_large *inode);
1211 errcode_t ext2fs_xattrs_count(struct ext2_xattr_handle *handle, size_t *count);
1212 errcode_t ext2fs_xattr_inode_max_size(ext2_filsys fs, ext2_ino_t ino,
1213 size_t *size);
1214
1215 /* extent.c */
1216 extern errcode_t ext2fs_extent_header_verify(void *ptr, int size);
1217 extern errcode_t ext2fs_extent_open(ext2_filsys fs, ext2_ino_t ino,
1218 ext2_extent_handle_t *handle);
1219 extern errcode_t ext2fs_extent_open2(ext2_filsys fs, ext2_ino_t ino,
1220 struct ext2_inode *inode,
1221 ext2_extent_handle_t *ret_handle);
1222 extern void ext2fs_extent_free(ext2_extent_handle_t handle);
1223 extern errcode_t ext2fs_extent_get(ext2_extent_handle_t handle,
1224 int flags, struct ext2fs_extent *extent);
1225 extern errcode_t ext2fs_extent_node_split(ext2_extent_handle_t handle);
1226 extern errcode_t ext2fs_extent_replace(ext2_extent_handle_t handle, int flags,
1227 struct ext2fs_extent *extent);
1228 extern errcode_t ext2fs_extent_insert(ext2_extent_handle_t handle, int flags,
1229 struct ext2fs_extent *extent);
1230 extern errcode_t ext2fs_extent_set_bmap(ext2_extent_handle_t handle,
1231 blk64_t logical, blk64_t physical,
1232 int flags);
1233 extern errcode_t ext2fs_extent_delete(ext2_extent_handle_t handle, int flags);
1234 extern errcode_t ext2fs_extent_get_info(ext2_extent_handle_t handle,
1235 struct ext2_extent_info *info);
1236 extern errcode_t ext2fs_extent_goto(ext2_extent_handle_t handle,
1237 blk64_t blk);
1238 extern errcode_t ext2fs_extent_goto2(ext2_extent_handle_t handle,
1239 int leaf_level, blk64_t blk);
1240 extern errcode_t ext2fs_extent_fix_parents(ext2_extent_handle_t handle);
1241 size_t ext2fs_max_extent_depth(ext2_extent_handle_t handle);
1242
1243 /* fallocate.c */
1244 #define EXT2_FALLOCATE_ZERO_BLOCKS (0x1)
1245 #define EXT2_FALLOCATE_FORCE_INIT (0x2)
1246 #define EXT2_FALLOCATE_FORCE_UNINIT (0x4)
1247 #define EXT2_FALLOCATE_INIT_BEYOND_EOF (0x8)
1248 #define EXT2_FALLOCATE_ALL_FLAGS (0xF)
1249 errcode_t ext2fs_fallocate(ext2_filsys fs, int flags, ext2_ino_t ino,
1250 struct ext2_inode *inode, blk64_t goal,
1251 blk64_t start, blk64_t len);
1252
1253 /* fileio.c */
1254 extern errcode_t ext2fs_file_open2(ext2_filsys fs, ext2_ino_t ino,
1255 struct ext2_inode *inode,
1256 int flags, ext2_file_t *ret);
1257 extern errcode_t ext2fs_file_open(ext2_filsys fs, ext2_ino_t ino,
1258 int flags, ext2_file_t *ret);
1259 extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file);
1260 struct ext2_inode *ext2fs_file_get_inode(ext2_file_t file);
1261 extern ext2_ino_t ext2fs_file_get_inode_num(ext2_file_t file);
1262 extern errcode_t ext2fs_file_close(ext2_file_t file);
1263 extern errcode_t ext2fs_file_flush(ext2_file_t file);
1264 extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf,
1265 unsigned int wanted, unsigned int *got);
1266 extern errcode_t ext2fs_file_write(ext2_file_t file, const void *buf,
1267 unsigned int nbytes, unsigned int *written);
1268 extern errcode_t ext2fs_file_llseek(ext2_file_t file, __u64 offset,
1269 int whence, __u64 *ret_pos);
1270 extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset,
1271 int whence, ext2_off_t *ret_pos);
1272 errcode_t ext2fs_file_get_lsize(ext2_file_t file, __u64 *ret_size);
1273 extern ext2_off_t ext2fs_file_get_size(ext2_file_t file);
1274 extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size);
1275 extern errcode_t ext2fs_file_set_size2(ext2_file_t file, ext2_off64_t size);
1276
1277 /* finddev.c */
1278 extern char *ext2fs_find_block_device(dev_t device);
1279
1280 /* flushb.c */
1281 extern errcode_t ext2fs_sync_device(int fd, int flushb);
1282
1283 /* freefs.c */
1284 extern void ext2fs_free(ext2_filsys fs);
1285 extern void ext2fs_free_dblist(ext2_dblist dblist);
1286 extern void ext2fs_badblocks_list_free(ext2_badblocks_list bb);
1287 extern void ext2fs_u32_list_free(ext2_u32_list bb);
1288
1289 /* gen_bitmap.c */
1290 extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap);
1291 extern errcode_t ext2fs_make_generic_bitmap(errcode_t magic, ext2_filsys fs,
1292 __u32 start, __u32 end,
1293 __u32 real_end,
1294 const char *descr, char *init_map,
1295 ext2fs_generic_bitmap *ret);
1296 extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start,
1297 __u32 end,
1298 __u32 real_end,
1299 const char *descr,
1300 ext2fs_generic_bitmap *ret);
1301 extern errcode_t ext2fs_copy_generic_bitmap(ext2fs_generic_bitmap src,
1302 ext2fs_generic_bitmap *dest);
1303 extern void ext2fs_clear_generic_bitmap(ext2fs_generic_bitmap bitmap);
1304 extern errcode_t ext2fs_fudge_generic_bitmap_end(ext2fs_inode_bitmap bitmap,
1305 errcode_t magic,
1306 errcode_t neq,
1307 ext2_ino_t end,
1308 ext2_ino_t *oend);
1309 extern void ext2fs_set_generic_bitmap_padding(ext2fs_generic_bitmap map);
1310 extern errcode_t ext2fs_resize_generic_bitmap(errcode_t magic,
1311 __u32 new_end,
1312 __u32 new_real_end,
1313 ext2fs_generic_bitmap bmap);
1314 extern errcode_t ext2fs_compare_generic_bitmap(errcode_t magic, errcode_t neq,
1315 ext2fs_generic_bitmap bm1,
1316 ext2fs_generic_bitmap bm2);
1317 extern errcode_t ext2fs_get_generic_bitmap_range(ext2fs_generic_bitmap bmap,
1318 errcode_t magic,
1319 __u32 start, __u32 num,
1320 void *out);
1321 extern errcode_t ext2fs_set_generic_bitmap_range(ext2fs_generic_bitmap bmap,
1322 errcode_t magic,
1323 __u32 start, __u32 num,
1324 void *in);
1325 extern errcode_t ext2fs_find_first_zero_generic_bitmap(ext2fs_generic_bitmap bitmap,
1326 __u32 start, __u32 end,
1327 __u32 *out);
1328 extern errcode_t ext2fs_find_first_set_generic_bitmap(ext2fs_generic_bitmap bitmap,
1329 __u32 start, __u32 end,
1330 __u32 *out);
1331
1332 /* gen_bitmap64.c */
1333 void ext2fs_free_generic_bmap(ext2fs_generic_bitmap bmap);
1334 errcode_t ext2fs_alloc_generic_bmap(ext2_filsys fs, errcode_t magic,
1335 int type, __u64 start, __u64 end,
1336 __u64 real_end,
1337 const char *descr,
1338 ext2fs_generic_bitmap *ret);
1339 errcode_t ext2fs_copy_generic_bmap(ext2fs_generic_bitmap src,
1340 ext2fs_generic_bitmap *dest);
1341 void ext2fs_clear_generic_bmap(ext2fs_generic_bitmap bitmap);
1342 errcode_t ext2fs_fudge_generic_bmap_end(ext2fs_generic_bitmap bitmap,
1343 errcode_t neq,
1344 __u64 end, __u64 *oend);
1345 void ext2fs_set_generic_bmap_padding(ext2fs_generic_bitmap bmap);
1346 errcode_t ext2fs_resize_generic_bmap(ext2fs_generic_bitmap bmap,
1347 __u64 new_end,
1348 __u64 new_real_end);
1349 errcode_t ext2fs_compare_generic_bmap(errcode_t neq,
1350 ext2fs_generic_bitmap bm1,
1351 ext2fs_generic_bitmap bm2);
1352 errcode_t ext2fs_get_generic_bmap_range(ext2fs_generic_bitmap bmap,
1353 __u64 start, unsigned int num,
1354 void *out);
1355 errcode_t ext2fs_set_generic_bmap_range(ext2fs_generic_bitmap bmap,
1356 __u64 start, unsigned int num,
1357 void *in);
1358 errcode_t ext2fs_convert_subcluster_bitmap(ext2_filsys fs,
1359 ext2fs_block_bitmap *bitmap);
1360
1361 /* get_num_dirs.c */
1362 extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs);
1363
1364 /* getsize.c */
1365 extern errcode_t ext2fs_get_device_size(const char *file, int blocksize,
1366 blk_t *retblocks);
1367 extern errcode_t ext2fs_get_device_size2(const char *file, int blocksize,
1368 blk64_t *retblocks);
1369
1370 /* getsectsize.c */
1371 extern int ext2fs_get_dio_alignment(int fd);
1372 errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize);
1373 errcode_t ext2fs_get_device_phys_sectsize(const char *file, int *sectsize);
1374
1375 /* i_block.c */
1376 errcode_t ext2fs_iblk_add_blocks(ext2_filsys fs, struct ext2_inode *inode,
1377 blk64_t num_blocks);
1378 errcode_t ext2fs_iblk_sub_blocks(ext2_filsys fs, struct ext2_inode *inode,
1379 blk64_t num_blocks);
1380 errcode_t ext2fs_iblk_set(ext2_filsys fs, struct ext2_inode *inode, blk64_t b);
1381
1382 /* imager.c */
1383 extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags);
1384 extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags);
1385 extern errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd, int flags);
1386 extern errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd, int flags);
1387 extern errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags);
1388 extern errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags);
1389
1390 /* ind_block.c */
1391 errcode_t ext2fs_read_ind_block(ext2_filsys fs, blk_t blk, void *buf);
1392 errcode_t ext2fs_write_ind_block(ext2_filsys fs, blk_t blk, void *buf);
1393
1394 /* initialize.c */
1395 extern errcode_t ext2fs_initialize(const char *name, int flags,
1396 struct ext2_super_block *param,
1397 io_manager manager, ext2_filsys *ret_fs);
1398
1399 /* icount.c */
1400 extern void ext2fs_free_icount(ext2_icount_t icount);
1401 extern errcode_t ext2fs_create_icount_tdb(ext2_filsys fs, char *tdb_dir,
1402 int flags, ext2_icount_t *ret);
1403 extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags,
1404 unsigned int size,
1405 ext2_icount_t hint, ext2_icount_t *ret);
1406 extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags,
1407 unsigned int size,
1408 ext2_icount_t *ret);
1409 extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ext2_ino_t ino,
1410 __u16 *ret);
1411 extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ext2_ino_t ino,
1412 __u16 *ret);
1413 extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ext2_ino_t ino,
1414 __u16 *ret);
1415 extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ext2_ino_t ino,
1416 __u16 count);
1417 extern ext2_ino_t ext2fs_get_icount_size(ext2_icount_t icount);
1418 errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *);
1419
1420 /* inline.c */
1421
1422 extern errcode_t ext2fs_get_memalign(unsigned long size,
1423 unsigned long align, void *ptr);
1424
1425 /* inline_data.c */
1426 extern errcode_t ext2fs_inline_data_init(ext2_filsys fs, ext2_ino_t ino);
1427 extern errcode_t ext2fs_inline_data_size(ext2_filsys fs, ext2_ino_t ino,
1428 size_t *size);
1429 extern errcode_t ext2fs_inline_data_get(ext2_filsys fs, ext2_ino_t ino,
1430 struct ext2_inode *inode,
1431 void *buf, size_t *size);
1432 extern errcode_t ext2fs_inline_data_set(ext2_filsys fs, ext2_ino_t ino,
1433 struct ext2_inode *inode,
1434 void *buf, size_t size);
1435
1436 /* inode.c */
1437 extern errcode_t ext2fs_create_inode_cache(ext2_filsys fs,
1438 unsigned int cache_size);
1439 extern void ext2fs_free_inode_cache(struct ext2_inode_cache *icache);
1440 extern errcode_t ext2fs_flush_icache(ext2_filsys fs);
1441 extern errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan,
1442 ext2_ino_t *ino,
1443 struct ext2_inode *inode,
1444 int bufsize);
1445 #define EXT2_INODE_SCAN_DEFAULT_BUFFER_BLOCKS 8
1446 extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks,
1447 ext2_inode_scan *ret_scan);
1448 extern void ext2fs_close_inode_scan(ext2_inode_scan scan);
1449 extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino,
1450 struct ext2_inode *inode);
1451 extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan,
1452 int group);
1453 extern void ext2fs_set_inode_callback
1454 (ext2_inode_scan scan,
1455 errcode_t (*done_group)(ext2_filsys fs,
1456 ext2_inode_scan scan,
1457 dgrp_t group,
1458 void * priv_data),
1459 void *done_group_data);
1460 extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags,
1461 int clear_flags);
1462 extern errcode_t ext2fs_read_inode_full(ext2_filsys fs, ext2_ino_t ino,
1463 struct ext2_inode * inode,
1464 int bufsize);
1465 extern errcode_t ext2fs_read_inode (ext2_filsys fs, ext2_ino_t ino,
1466 struct ext2_inode * inode);
1467 extern errcode_t ext2fs_write_inode_full(ext2_filsys fs, ext2_ino_t ino,
1468 struct ext2_inode * inode,
1469 int bufsize);
1470 extern errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino,
1471 struct ext2_inode * inode);
1472 extern errcode_t ext2fs_write_new_inode(ext2_filsys fs, ext2_ino_t ino,
1473 struct ext2_inode * inode);
1474 extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks);
1475 extern errcode_t ext2fs_check_directory(ext2_filsys fs, ext2_ino_t ino);
1476
1477 /* inode_io.c */
1478 extern io_manager inode_io_manager;
1479 extern errcode_t ext2fs_inode_io_intern(ext2_filsys fs, ext2_ino_t ino,
1480 char **name);
1481 extern errcode_t ext2fs_inode_io_intern2(ext2_filsys fs, ext2_ino_t ino,
1482 struct ext2_inode *inode,
1483 char **name);
1484
1485 /* ismounted.c */
1486 extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags);
1487 extern errcode_t ext2fs_check_mount_point(const char *device, int *mount_flags,
1488 char *mtpt, int mtlen);
1489
1490 /* punch.c */
1491 /*
1492 * NOTE: This function removes from an inode the blocks "start", "end", and
1493 * every block in between.
1494 */
1495 extern errcode_t ext2fs_punch(ext2_filsys fs, ext2_ino_t ino,
1496 struct ext2_inode *inode,
1497 char *block_buf, blk64_t start,
1498 blk64_t end);
1499
1500 /* namei.c */
1501 extern errcode_t ext2fs_lookup(ext2_filsys fs, ext2_ino_t dir, const char *name,
1502 int namelen, char *buf, ext2_ino_t *inode);
1503 extern errcode_t ext2fs_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
1504 const char *name, ext2_ino_t *inode);
1505 errcode_t ext2fs_namei_follow(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
1506 const char *name, ext2_ino_t *inode);
1507 extern errcode_t ext2fs_follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
1508 ext2_ino_t inode, ext2_ino_t *res_inode);
1509
1510 /* native.c */
1511 int ext2fs_native_flag(void);
1512
1513 /* newdir.c */
1514 extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino,
1515 ext2_ino_t parent_ino, char **block);
1516 extern errcode_t ext2fs_new_dir_inline_data(ext2_filsys fs, ext2_ino_t dir_ino,
1517 ext2_ino_t parent_ino, __u32 *iblock);
1518
1519 /* mkdir.c */
1520 extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum,
1521 const char *name);
1522
1523 /* mkjournal.c */
1524 extern errcode_t ext2fs_zero_blocks(ext2_filsys fs, blk_t blk, int num,
1525 blk_t *ret_blk, int *ret_count);
1526 extern errcode_t ext2fs_zero_blocks2(ext2_filsys fs, blk64_t blk, int num,
1527 blk64_t *ret_blk, int *ret_count);
1528 extern errcode_t ext2fs_create_journal_superblock(ext2_filsys fs,
1529 __u32 num_blocks, int flags,
1530 char **ret_jsb);
1531 extern errcode_t ext2fs_add_journal_device(ext2_filsys fs,
1532 ext2_filsys journal_dev);
1533 extern errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t num_blocks,
1534 int flags);
1535 extern errcode_t ext2fs_add_journal_inode2(ext2_filsys fs, blk_t num_blocks,
1536 blk64_t goal, int flags);
1537 extern int ext2fs_default_journal_size(__u64 num_blocks);
1538 extern int ext2fs_journal_sb_start(int blocksize);
1539
1540 /* openfs.c */
1541 extern errcode_t ext2fs_open(const char *name, int flags, int superblock,
1542 unsigned int block_size, io_manager manager,
1543 ext2_filsys *ret_fs);
1544 extern errcode_t ext2fs_open2(const char *name, const char *io_options,
1545 int flags, int superblock,
1546 unsigned int block_size, io_manager manager,
1547 ext2_filsys *ret_fs);
1548 /*
1549 * The dgrp_t argument to these two functions is not actually a group number
1550 * but a block number offset within a group table! Convert with the formula
1551 * (group_number / groups_per_block).
1552 */
1553 extern blk64_t ext2fs_descriptor_block_loc2(ext2_filsys fs,
1554 blk64_t group_block, dgrp_t i);
1555 extern blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block,
1556 dgrp_t i);
1557 errcode_t ext2fs_get_data_io(ext2_filsys fs, io_channel *old_io);
1558 errcode_t ext2fs_set_data_io(ext2_filsys fs, io_channel new_io);
1559 errcode_t ext2fs_rewrite_to_io(ext2_filsys fs, io_channel new_io);
1560
1561 /* get_pathname.c */
1562 extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino,
1563 char **name);
1564
1565 /* link.c */
1566 errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name,
1567 ext2_ino_t ino, int flags);
1568 errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir, const char *name,
1569 ext2_ino_t ino, int flags);
1570
1571 /* symlink.c */
1572 errcode_t ext2fs_symlink(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t ino,
1573 const char *name, const char *target);
1574
1575 /* mmp.c */
1576 errcode_t ext2fs_mmp_read(ext2_filsys fs, blk64_t mmp_blk, void *buf);
1577 errcode_t ext2fs_mmp_write(ext2_filsys fs, blk64_t mmp_blk, void *buf);
1578 errcode_t ext2fs_mmp_clear(ext2_filsys fs);
1579 errcode_t ext2fs_mmp_init(ext2_filsys fs);
1580 errcode_t ext2fs_mmp_start(ext2_filsys fs);
1581 errcode_t ext2fs_mmp_update(ext2_filsys fs);
1582 errcode_t ext2fs_mmp_update2(ext2_filsys fs, int immediately);
1583 errcode_t ext2fs_mmp_stop(ext2_filsys fs);
1584 unsigned ext2fs_mmp_new_seq(void);
1585
1586 /* read_bb.c */
1587 extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs,
1588 ext2_badblocks_list *bb_list);
1589
1590 /* read_bb_file.c */
1591 extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f,
1592 ext2_badblocks_list *bb_list,
1593 void *priv_data,
1594 void (*invalid)(ext2_filsys fs,
1595 blk_t blk,
1596 char *badstr,
1597 void *priv_data));
1598 extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f,
1599 ext2_badblocks_list *bb_list,
1600 void (*invalid)(ext2_filsys fs,
1601 blk_t blk));
1602
1603 /* res_gdt.c */
1604 extern errcode_t ext2fs_create_resize_inode(ext2_filsys fs);
1605
1606 /*sha256.c */
1607 #define EXT2FS_SHA256_LENGTH 32
1608 #if 0
1609 extern void ext2fs_sha256(const unsigned char *in, unsigned long in_size,
1610 unsigned char out[EXT2FS_SHA256_LENGTH]);
1611 #endif
1612
1613 /* sha512.c */
1614 #define EXT2FS_SHA512_LENGTH 64
1615 extern void ext2fs_sha512(const unsigned char *in, unsigned long in_size,
1616 unsigned char out[EXT2FS_SHA512_LENGTH]);
1617
1618 /* swapfs.c */
1619 extern errcode_t ext2fs_dirent_swab_in2(ext2_filsys fs, char *buf, size_t size,
1620 int flags);
1621 extern errcode_t ext2fs_dirent_swab_in(ext2_filsys fs, char *buf, int flags);
1622 extern errcode_t ext2fs_dirent_swab_out2(ext2_filsys fs, char *buf, size_t size,
1623 int flags);
1624 extern errcode_t ext2fs_dirent_swab_out(ext2_filsys fs, char *buf, int flags);
1625 extern void ext2fs_swap_ext_attr(char *to, char *from, int bufsize,
1626 int has_header);
1627 extern void ext2fs_swap_ext_attr_header(struct ext2_ext_attr_header *to_header,
1628 struct ext2_ext_attr_header *from_hdr);
1629 extern void ext2fs_swap_ext_attr_entry(struct ext2_ext_attr_entry *to_entry,
1630 struct ext2_ext_attr_entry *from_entry);
1631 extern void ext2fs_swap_super(struct ext2_super_block * super);
1632 extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp);
1633 extern void ext2fs_swap_group_desc2(ext2_filsys, struct ext2_group_desc *gdp);
1634 extern void ext2fs_swap_inode_full(ext2_filsys fs, struct ext2_inode_large *t,
1635 struct ext2_inode_large *f, int hostorder,
1636 int bufsize);
1637 extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t,
1638 struct ext2_inode *f, int hostorder);
1639 extern void ext2fs_swap_mmp(struct mmp_struct *mmp);
1640
1641 /* unix_io.c */
1642 extern int ext2fs_open_file(const char *pathname, int flags, mode_t mode);
1643 extern int ext2fs_stat(const char *path, ext2fs_struct_stat *buf);
1644 extern int ext2fs_fstat(int fd, ext2fs_struct_stat *buf);
1645
1646 /* valid_blk.c */
1647 extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode);
1648 extern int ext2fs_inode_has_valid_blocks2(ext2_filsys fs,
1649 struct ext2_inode *inode);
1650
1651 /* version.c */
1652 extern int ext2fs_parse_version_string(const char *ver_string);
1653 extern int ext2fs_get_library_version(const char **ver_string,
1654 const char **date_string);
1655
1656 /* write_bb_file.c */
1657 extern errcode_t ext2fs_write_bb_FILE(ext2_badblocks_list bb_list,
1658 unsigned int flags,
1659 FILE *f);
1660
1661
1662 /* inline functions */
1663 #ifdef NO_INLINE_FUNCS
1664 extern errcode_t ext2fs_get_mem(unsigned long size, void *ptr);
1665 extern errcode_t ext2fs_get_memzero(unsigned long size, void *ptr);
1666 extern errcode_t ext2fs_get_array(unsigned long count,
1667 unsigned long size, void *ptr);
1668 extern errcode_t ext2fs_get_arrayzero(unsigned long count,
1669 unsigned long size, void *ptr);
1670 extern errcode_t ext2fs_free_mem(void *ptr);
1671 extern errcode_t ext2fs_resize_mem(unsigned long old_size,
1672 unsigned long size, void *ptr);
1673 extern void ext2fs_mark_super_dirty(ext2_filsys fs);
1674 extern void ext2fs_mark_changed(ext2_filsys fs);
1675 extern int ext2fs_test_changed(ext2_filsys fs);
1676 extern void ext2fs_mark_valid(ext2_filsys fs);
1677 extern void ext2fs_unmark_valid(ext2_filsys fs);
1678 extern int ext2fs_test_valid(ext2_filsys fs);
1679 extern void ext2fs_mark_ib_dirty(ext2_filsys fs);
1680 extern void ext2fs_mark_bb_dirty(ext2_filsys fs);
1681 extern int ext2fs_test_ib_dirty(ext2_filsys fs);
1682 extern int ext2fs_test_bb_dirty(ext2_filsys fs);
1683 extern dgrp_t ext2fs_group_of_blk(ext2_filsys fs, blk_t blk);
1684 extern dgrp_t ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino);
1685 extern blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group);
1686 extern blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group);
1687 extern blk_t ext2fs_inode_data_blocks(ext2_filsys fs,
1688 struct ext2_inode *inode);
1689 extern unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b);
1690 extern __u64 ext2fs_div64_ceil(__u64 a, __u64 b);
1691 extern int ext2fs_dirent_name_len(const struct ext2_dir_entry *entry);
1692 extern void ext2fs_dirent_set_name_len(struct ext2_dir_entry *entry, int len);
1693 extern int ext2fs_dirent_file_type(const struct ext2_dir_entry *entry);
1694 extern void ext2fs_dirent_set_file_type(struct ext2_dir_entry *entry, int type);
1695 extern struct ext2_inode *ext2fs_inode(struct ext2_inode_large * large_inode);
1696 extern const struct ext2_inode *ext2fs_const_inode(const struct ext2_inode_large * large_inode);
1697
1698 #endif
1699
1700 /*
1701 * The actual inlined functions definitions themselves...
1702 *
1703 * If NO_INLINE_FUNCS is defined, then we won't try to do inline
1704 * functions at all!
1705 */
1706 #if (defined(INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS))
1707 #ifdef INCLUDE_INLINE_FUNCS
1708 #define _INLINE_ extern
1709 #else
1710 #if (__STDC_VERSION__ >= 199901L)
1711 #define _INLINE_ inline
1712 #else
1713 #ifdef __GNUC__
1714 #define _INLINE_ extern __inline__
1715 #else /* For Watcom C */
1716 #define _INLINE_ extern inline
1717 #endif /* __GNUC__ */
1718 #endif /* __STDC_VERSION__ >= 199901L */
1719 #endif
1720
1721 #ifndef EXT2_CUSTOM_MEMORY_ROUTINES
1722 #include <string.h>
1723 /*
1724 * Allocate memory. The 'ptr' arg must point to a pointer.
1725 */
1726 _INLINE_ errcode_t ext2fs_get_mem(unsigned long size, void *ptr)
1727 {
1728 void *pp;
1729
1730 pp = malloc(size);
1731 if (!pp)
1732 return EXT2_ET_NO_MEMORY;
1733 memcpy(ptr, &pp, sizeof (pp));
1734 return 0;
1735 }
1736
1737 _INLINE_ errcode_t ext2fs_get_memzero(unsigned long size, void *ptr)
1738 {
1739 void *pp;
1740
1741 pp = malloc(size);
1742 if (!pp)
1743 return EXT2_ET_NO_MEMORY;
1744 memset(pp, 0, size);
1745 memcpy(ptr, &pp, sizeof(pp));
1746 return 0;
1747 }
1748
1749 _INLINE_ errcode_t ext2fs_get_array(unsigned long count, unsigned long size, void *ptr)
1750 {
1751 if (count && (~0UL)/count < size)
1752 return EXT2_ET_NO_MEMORY;
1753 return ext2fs_get_mem(count*size, ptr);
1754 }
1755
1756 _INLINE_ errcode_t ext2fs_get_arrayzero(unsigned long count,
1757 unsigned long size, void *ptr)
1758 {
1759 void *pp;
1760
1761 if (count && (~0UL)/count < size)
1762 return EXT2_ET_NO_MEMORY;
1763 pp = calloc(count, size);
1764 if (!pp)
1765 return EXT2_ET_NO_MEMORY;
1766 memcpy(ptr, &pp, sizeof(pp));
1767 return 0;
1768 }
1769
1770 /*
1771 * Free memory. The 'ptr' arg must point to a pointer.
1772 */
1773 _INLINE_ errcode_t ext2fs_free_mem(void *ptr)
1774 {
1775 void *p;
1776
1777 memcpy(&p, ptr, sizeof(p));
1778 free(p);
1779 p = 0;
1780 memcpy(ptr, &p, sizeof(p));
1781 return 0;
1782 }
1783
1784 /*
1785 * Resize memory. The 'ptr' arg must point to a pointer.
1786 */
1787 _INLINE_ errcode_t ext2fs_resize_mem(unsigned long EXT2FS_ATTR((unused)) old_size,
1788 unsigned long size, void *ptr)
1789 {
1790 void *p;
1791
1792 /* Use "memcpy" for pointer assignments here to avoid problems
1793 * with C99 strict type aliasing rules. */
1794 memcpy(&p, ptr, sizeof(p));
1795 p = realloc(p, size);
1796 if (!p)
1797 return EXT2_ET_NO_MEMORY;
1798 memcpy(ptr, &p, sizeof(p));
1799 return 0;
1800 }
1801 #endif /* Custom memory routines */
1802
1803 /*
1804 * Mark a filesystem superblock as dirty
1805 */
1806 _INLINE_ void ext2fs_mark_super_dirty(ext2_filsys fs)
1807 {
1808 fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_CHANGED;
1809 }
1810
1811 /*
1812 * Mark a filesystem as changed
1813 */
1814 _INLINE_ void ext2fs_mark_changed(ext2_filsys fs)
1815 {
1816 fs->flags |= EXT2_FLAG_CHANGED;
1817 }
1818
1819 /*
1820 * Check to see if a filesystem has changed
1821 */
1822 _INLINE_ int ext2fs_test_changed(ext2_filsys fs)
1823 {
1824 return (fs->flags & EXT2_FLAG_CHANGED);
1825 }
1826
1827 /*
1828 * Mark a filesystem as valid
1829 */
1830 _INLINE_ void ext2fs_mark_valid(ext2_filsys fs)
1831 {
1832 fs->flags |= EXT2_FLAG_VALID;
1833 }
1834
1835 /*
1836 * Mark a filesystem as NOT valid
1837 */
1838 _INLINE_ void ext2fs_unmark_valid(ext2_filsys fs)
1839 {
1840 fs->flags &= ~EXT2_FLAG_VALID;
1841 }
1842
1843 /*
1844 * Check to see if a filesystem is valid
1845 */
1846 _INLINE_ int ext2fs_test_valid(ext2_filsys fs)
1847 {
1848 return (fs->flags & EXT2_FLAG_VALID);
1849 }
1850
1851 /*
1852 * Mark the inode bitmap as dirty
1853 */
1854 _INLINE_ void ext2fs_mark_ib_dirty(ext2_filsys fs)
1855 {
1856 fs->flags |= EXT2_FLAG_IB_DIRTY | EXT2_FLAG_CHANGED;
1857 }
1858
1859 /*
1860 * Mark the block bitmap as dirty
1861 */
1862 _INLINE_ void ext2fs_mark_bb_dirty(ext2_filsys fs)
1863 {
1864 fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_CHANGED;
1865 }
1866
1867 /*
1868 * Check to see if a filesystem's inode bitmap is dirty
1869 */
1870 _INLINE_ int ext2fs_test_ib_dirty(ext2_filsys fs)
1871 {
1872 return (fs->flags & EXT2_FLAG_IB_DIRTY);
1873 }
1874
1875 /*
1876 * Check to see if a filesystem's block bitmap is dirty
1877 */
1878 _INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs)
1879 {
1880 return (fs->flags & EXT2_FLAG_BB_DIRTY);
1881 }
1882
1883 /*
1884 * Return the group # of a block
1885 */
1886 _INLINE_ dgrp_t ext2fs_group_of_blk(ext2_filsys fs, blk_t blk)
1887 {
1888 return ext2fs_group_of_blk2(fs, blk);
1889 }
1890 /*
1891 * Return the group # of an inode number
1892 */
1893 _INLINE_ dgrp_t ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino)
1894 {
1895 return (ino - 1) / fs->super->s_inodes_per_group;
1896 }
1897
1898 /*
1899 * Return the first block (inclusive) in a group
1900 */
1901 _INLINE_ blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group)
1902 {
1903 return (blk_t) ext2fs_group_first_block2(fs, group);
1904 }
1905
1906 /*
1907 * Return the last block (inclusive) in a group
1908 */
1909 _INLINE_ blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group)
1910 {
1911 return (blk_t) ext2fs_group_last_block2(fs, group);
1912 }
1913
1914 _INLINE_ blk_t ext2fs_inode_data_blocks(ext2_filsys fs,
1915 struct ext2_inode *inode)
1916 {
1917 return (blk_t) ext2fs_inode_data_blocks2(fs, inode);
1918 }
1919
1920 /*
1921 * This is an efficient, overflow safe way of calculating ceil((1.0 * a) / b)
1922 */
1923 _INLINE_ unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b)
1924 {
1925 if (!a)
1926 return 0;
1927 return ((a - 1) / b) + 1;
1928 }
1929
1930 _INLINE_ __u64 ext2fs_div64_ceil(__u64 a, __u64 b)
1931 {
1932 if (!a)
1933 return 0;
1934 return ((a - 1) / b) + 1;
1935 }
1936
1937 _INLINE_ int ext2fs_dirent_name_len(const struct ext2_dir_entry *entry)
1938 {
1939 return entry->name_len & 0xff;
1940 }
1941
1942 _INLINE_ void ext2fs_dirent_set_name_len(struct ext2_dir_entry *entry, int len)
1943 {
1944 entry->name_len = (entry->name_len & 0xff00) | (len & 0xff);
1945 }
1946
1947 _INLINE_ int ext2fs_dirent_file_type(const struct ext2_dir_entry *entry)
1948 {
1949 return entry->name_len >> 8;
1950 }
1951
1952 _INLINE_ void ext2fs_dirent_set_file_type(struct ext2_dir_entry *entry, int type)
1953 {
1954 entry->name_len = (entry->name_len & 0xff) | (type << 8);
1955 }
1956
1957 _INLINE_ struct ext2_inode *ext2fs_inode(struct ext2_inode_large * large_inode)
1958 {
1959 /* It is always safe to convert large inode to a small inode */
1960 return (struct ext2_inode *) large_inode;
1961 }
1962
1963 _INLINE_ const struct ext2_inode *
1964 ext2fs_const_inode(const struct ext2_inode_large * large_inode)
1965 {
1966 /* It is always safe to convert large inode to a small inode */
1967 return (const struct ext2_inode *) large_inode;
1968 }
1969
1970 #undef _INLINE_
1971 #endif
1972
1973 #ifdef __cplusplus
1974 }
1975 #endif
1976
1977 #endif /* _EXT2FS_EXT2FS_H */
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