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libext2fs: store checksum seed in superblock
[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 errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode,
652 ext2fs_inode_bitmap map, ext2_ino_t *ret);
653 extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal,
654 ext2fs_block_bitmap map, blk_t *ret);
655 extern errcode_t ext2fs_new_block2(ext2_filsys fs, blk64_t goal,
656 ext2fs_block_bitmap map, blk64_t *ret);
657 extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start,
658 blk_t finish, int num,
659 ext2fs_block_bitmap map,
660 blk_t *ret);
661 extern errcode_t ext2fs_get_free_blocks2(ext2_filsys fs, blk64_t start,
662 blk64_t finish, int num,
663 ext2fs_block_bitmap map,
664 blk64_t *ret);
665 extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal,
666 char *block_buf, blk_t *ret);
667 extern errcode_t ext2fs_alloc_block2(ext2_filsys fs, blk64_t goal,
668 char *block_buf, blk64_t *ret);
669 extern void ext2fs_set_alloc_block_callback(ext2_filsys fs,
670 errcode_t (*func)(ext2_filsys fs,
671 blk64_t goal,
672 blk64_t *ret),
673 errcode_t (**old)(ext2_filsys fs,
674 blk64_t goal,
675 blk64_t *ret));
676 blk64_t ext2fs_find_inode_goal(ext2_filsys fs, ext2_ino_t ino,
677 struct ext2_inode *inode, blk64_t lblk);
678 extern void ext2fs_set_new_range_callback(ext2_filsys fs,
679 errcode_t (*func)(ext2_filsys fs, int flags, blk64_t goal,
680 blk64_t len, blk64_t *pblk, blk64_t *plen),
681 errcode_t (**old)(ext2_filsys fs, int flags, blk64_t goal,
682 blk64_t len, blk64_t *pblk, blk64_t *plen));
683 extern void ext2fs_set_block_alloc_stats_range_callback(ext2_filsys fs,
684 void (*func)(ext2_filsys fs, blk64_t blk,
685 blk_t num, int inuse),
686 void (**old)(ext2_filsys fs, blk64_t blk,
687 blk_t num, int inuse));
688 #define EXT2_NEWRANGE_FIXED_GOAL (0x1)
689 #define EXT2_NEWRANGE_MIN_LENGTH (0x2)
690 #define EXT2_NEWRANGE_ALL_FLAGS (0x3)
691 errcode_t ext2fs_new_range(ext2_filsys fs, int flags, blk64_t goal,
692 blk64_t len, ext2fs_block_bitmap map, blk64_t *pblk,
693 blk64_t *plen);
694 #define EXT2_ALLOCRANGE_FIXED_GOAL (0x1)
695 #define EXT2_ALLOCRANGE_ZERO_BLOCKS (0x2)
696 #define EXT2_ALLOCRANGE_ALL_FLAGS (0x3)
697 errcode_t ext2fs_alloc_range(ext2_filsys fs, int flags, blk64_t goal,
698 blk_t len, blk64_t *ret);
699
700 /* alloc_sb.c */
701 extern int ext2fs_reserve_super_and_bgd(ext2_filsys fs,
702 dgrp_t group,
703 ext2fs_block_bitmap bmap);
704 extern void ext2fs_set_block_alloc_stats_callback(ext2_filsys fs,
705 void (*func)(ext2_filsys fs,
706 blk64_t blk,
707 int inuse),
708 void (**old)(ext2_filsys fs,
709 blk64_t blk,
710 int inuse));
711
712 /* alloc_stats.c */
713 void ext2fs_inode_alloc_stats(ext2_filsys fs, ext2_ino_t ino, int inuse);
714 void ext2fs_inode_alloc_stats2(ext2_filsys fs, ext2_ino_t ino,
715 int inuse, int isdir);
716 void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse);
717 void ext2fs_block_alloc_stats2(ext2_filsys fs, blk64_t blk, int inuse);
718 void ext2fs_block_alloc_stats_range(ext2_filsys fs, blk64_t blk,
719 blk_t num, int inuse);
720
721 /* alloc_tables.c */
722 extern errcode_t ext2fs_allocate_tables(ext2_filsys fs);
723 extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group,
724 ext2fs_block_bitmap bmap);
725
726 /* badblocks.c */
727 extern errcode_t ext2fs_u32_list_create(ext2_u32_list *ret, int size);
728 extern errcode_t ext2fs_u32_list_add(ext2_u32_list bb, __u32 blk);
729 extern int ext2fs_u32_list_find(ext2_u32_list bb, __u32 blk);
730 extern int ext2fs_u32_list_test(ext2_u32_list bb, blk_t blk);
731 extern errcode_t ext2fs_u32_list_iterate_begin(ext2_u32_list bb,
732 ext2_u32_iterate *ret);
733 extern int ext2fs_u32_list_iterate(ext2_u32_iterate iter, blk_t *blk);
734 extern void ext2fs_u32_list_iterate_end(ext2_u32_iterate iter);
735 extern errcode_t ext2fs_u32_copy(ext2_u32_list src, ext2_u32_list *dest);
736 extern int ext2fs_u32_list_equal(ext2_u32_list bb1, ext2_u32_list bb2);
737
738 extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret,
739 int size);
740 extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb,
741 blk_t blk);
742 extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb,
743 blk_t blk);
744 extern int ext2fs_u32_list_del(ext2_u32_list bb, __u32 blk);
745 extern void ext2fs_badblocks_list_del(ext2_u32_list bb, __u32 blk);
746 extern errcode_t
747 ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb,
748 ext2_badblocks_iterate *ret);
749 extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter,
750 blk_t *blk);
751 extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter);
752 extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src,
753 ext2_badblocks_list *dest);
754 extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1,
755 ext2_badblocks_list bb2);
756 extern int ext2fs_u32_list_count(ext2_u32_list bb);
757
758 /* bb_compat */
759 extern errcode_t badblocks_list_create(badblocks_list *ret, int size);
760 extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk);
761 extern int badblocks_list_test(badblocks_list bb, blk_t blk);
762 extern errcode_t badblocks_list_iterate_begin(badblocks_list bb,
763 badblocks_iterate *ret);
764 extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk);
765 extern void badblocks_list_iterate_end(badblocks_iterate iter);
766 extern void badblocks_list_free(badblocks_list bb);
767
768 /* bb_inode.c */
769 extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs,
770 ext2_badblocks_list bb_list);
771
772 /* bitmaps.c */
773 extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap);
774 extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap);
775 extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src,
776 ext2fs_generic_bitmap *dest);
777 extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs);
778 extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs);
779 extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs);
780 extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs);
781 extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs,
782 const char *descr,
783 ext2fs_block_bitmap *ret);
784 extern errcode_t ext2fs_allocate_subcluster_bitmap(ext2_filsys fs,
785 const char *descr,
786 ext2fs_block_bitmap *ret);
787 extern int ext2fs_get_bitmap_granularity(ext2fs_block_bitmap bitmap);
788 extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs,
789 const char *descr,
790 ext2fs_inode_bitmap *ret);
791 extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap,
792 ext2_ino_t end, ext2_ino_t *oend);
793 extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap,
794 blk_t end, blk_t *oend);
795 extern errcode_t ext2fs_fudge_block_bitmap_end2(ext2fs_block_bitmap bitmap,
796 blk64_t end, blk64_t *oend);
797 extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap);
798 extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap);
799 extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs);
800 extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs);
801 extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end,
802 ext2fs_inode_bitmap bmap);
803 extern errcode_t ext2fs_resize_inode_bitmap2(__u64 new_end,
804 __u64 new_real_end,
805 ext2fs_inode_bitmap bmap);
806 extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end,
807 ext2fs_block_bitmap bmap);
808 extern errcode_t ext2fs_resize_block_bitmap2(__u64 new_end,
809 __u64 new_real_end,
810 ext2fs_block_bitmap bmap);
811 extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1,
812 ext2fs_block_bitmap bm2);
813 extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1,
814 ext2fs_inode_bitmap bm2);
815 extern errcode_t ext2fs_set_inode_bitmap_range(ext2fs_inode_bitmap bmap,
816 ext2_ino_t start, unsigned int num,
817 void *in);
818 extern errcode_t ext2fs_set_inode_bitmap_range2(ext2fs_inode_bitmap bmap,
819 __u64 start, size_t num,
820 void *in);
821 extern errcode_t ext2fs_get_inode_bitmap_range(ext2fs_inode_bitmap bmap,
822 ext2_ino_t start, unsigned int num,
823 void *out);
824 extern errcode_t ext2fs_get_inode_bitmap_range2(ext2fs_inode_bitmap bmap,
825 __u64 start, size_t num,
826 void *out);
827 extern errcode_t ext2fs_set_block_bitmap_range(ext2fs_block_bitmap bmap,
828 blk_t start, unsigned int num,
829 void *in);
830 extern errcode_t ext2fs_set_block_bitmap_range2(ext2fs_block_bitmap bmap,
831 blk64_t start, size_t num,
832 void *in);
833 extern errcode_t ext2fs_get_block_bitmap_range(ext2fs_block_bitmap bmap,
834 blk_t start, unsigned int num,
835 void *out);
836 extern errcode_t ext2fs_get_block_bitmap_range2(ext2fs_block_bitmap bmap,
837 blk64_t start, size_t num,
838 void *out);
839
840 /* blknum.c */
841 extern __u32 ext2fs_inode_bitmap_checksum(ext2_filsys fs, dgrp_t group);
842 extern __u32 ext2fs_block_bitmap_checksum(ext2_filsys fs, dgrp_t group);
843 extern dgrp_t ext2fs_group_of_blk2(ext2_filsys fs, blk64_t);
844 extern blk64_t ext2fs_group_first_block2(ext2_filsys fs, dgrp_t group);
845 extern blk64_t ext2fs_group_last_block2(ext2_filsys fs, dgrp_t group);
846 extern int ext2fs_group_blocks_count(ext2_filsys fs, dgrp_t group);
847 extern blk64_t ext2fs_inode_data_blocks2(ext2_filsys fs,
848 struct ext2_inode *inode);
849 extern blk64_t ext2fs_inode_i_blocks(ext2_filsys fs,
850 struct ext2_inode *inode);
851 extern blk64_t ext2fs_blocks_count(struct ext2_super_block *super);
852 extern void ext2fs_blocks_count_set(struct ext2_super_block *super,
853 blk64_t blk);
854 extern void ext2fs_blocks_count_add(struct ext2_super_block *super,
855 blk64_t blk);
856 extern blk64_t ext2fs_r_blocks_count(struct ext2_super_block *super);
857 extern void ext2fs_r_blocks_count_set(struct ext2_super_block *super,
858 blk64_t blk);
859 extern void ext2fs_r_blocks_count_add(struct ext2_super_block *super,
860 blk64_t blk);
861 extern blk64_t ext2fs_free_blocks_count(struct ext2_super_block *super);
862 extern void ext2fs_free_blocks_count_set(struct ext2_super_block *super,
863 blk64_t blk);
864 extern void ext2fs_free_blocks_count_add(struct ext2_super_block *super,
865 blk64_t blk);
866 /* Block group descriptor accessor functions */
867 extern struct ext2_group_desc *ext2fs_group_desc(ext2_filsys fs,
868 struct opaque_ext2_group_desc *gdp,
869 dgrp_t group);
870 extern blk64_t ext2fs_block_bitmap_csum(ext2_filsys fs, dgrp_t group);
871 extern blk64_t ext2fs_block_bitmap_loc(ext2_filsys fs, dgrp_t group);
872 extern void ext2fs_block_bitmap_loc_set(ext2_filsys fs, dgrp_t group,
873 blk64_t blk);
874 extern __u32 ext2fs_inode_bitmap_csum(ext2_filsys fs, dgrp_t group);
875 extern blk64_t ext2fs_inode_bitmap_loc(ext2_filsys fs, dgrp_t group);
876 extern void ext2fs_inode_bitmap_loc_set(ext2_filsys fs, dgrp_t group,
877 blk64_t blk);
878 extern blk64_t ext2fs_inode_table_loc(ext2_filsys fs, dgrp_t group);
879 extern void ext2fs_inode_table_loc_set(ext2_filsys fs, dgrp_t group,
880 blk64_t blk);
881 extern __u32 ext2fs_bg_free_blocks_count(ext2_filsys fs, dgrp_t group);
882 extern void ext2fs_bg_free_blocks_count_set(ext2_filsys fs, dgrp_t group,
883 __u32 n);
884 extern __u32 ext2fs_bg_free_inodes_count(ext2_filsys fs, dgrp_t group);
885 extern void ext2fs_bg_free_inodes_count_set(ext2_filsys fs, dgrp_t group,
886 __u32 n);
887 extern __u32 ext2fs_bg_used_dirs_count(ext2_filsys fs, dgrp_t group);
888 extern void ext2fs_bg_used_dirs_count_set(ext2_filsys fs, dgrp_t group,
889 __u32 n);
890 extern __u32 ext2fs_bg_itable_unused(ext2_filsys fs, dgrp_t group);
891 extern void ext2fs_bg_itable_unused_set(ext2_filsys fs, dgrp_t group,
892 __u32 n);
893 extern __u16 ext2fs_bg_flags(ext2_filsys fs, dgrp_t group);
894 extern void ext2fs_bg_flags_zap(ext2_filsys fs, dgrp_t group);
895 extern int ext2fs_bg_flags_test(ext2_filsys fs, dgrp_t group, __u16 bg_flag);
896 extern void ext2fs_bg_flags_set(ext2_filsys fs, dgrp_t group, __u16 bg_flags);
897 extern void ext2fs_bg_flags_clear(ext2_filsys fs, dgrp_t group, __u16 bg_flags);
898 extern __u16 ext2fs_bg_checksum(ext2_filsys fs, dgrp_t group);
899 extern void ext2fs_bg_checksum_set(ext2_filsys fs, dgrp_t group, __u16 checksum);
900 extern blk64_t ext2fs_file_acl_block(ext2_filsys fs,
901 const struct ext2_inode *inode);
902 extern void ext2fs_file_acl_block_set(ext2_filsys fs,
903 struct ext2_inode *inode, blk64_t blk);
904 extern errcode_t ext2fs_inode_size_set(ext2_filsys fs, struct ext2_inode *inode,
905 ext2_off64_t size);
906
907 /* block.c */
908 extern errcode_t ext2fs_block_iterate(ext2_filsys fs,
909 ext2_ino_t ino,
910 int flags,
911 char *block_buf,
912 int (*func)(ext2_filsys fs,
913 blk_t *blocknr,
914 int blockcnt,
915 void *priv_data),
916 void *priv_data);
917 errcode_t ext2fs_block_iterate2(ext2_filsys fs,
918 ext2_ino_t ino,
919 int flags,
920 char *block_buf,
921 int (*func)(ext2_filsys fs,
922 blk_t *blocknr,
923 e2_blkcnt_t blockcnt,
924 blk_t ref_blk,
925 int ref_offset,
926 void *priv_data),
927 void *priv_data);
928 errcode_t ext2fs_block_iterate3(ext2_filsys fs,
929 ext2_ino_t ino,
930 int flags,
931 char *block_buf,
932 int (*func)(ext2_filsys fs,
933 blk64_t *blocknr,
934 e2_blkcnt_t blockcnt,
935 blk64_t ref_blk,
936 int ref_offset,
937 void *priv_data),
938 void *priv_data);
939
940 /* bmap.c */
941 extern errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino,
942 struct ext2_inode *inode,
943 char *block_buf, int bmap_flags,
944 blk_t block, blk_t *phys_blk);
945 extern errcode_t ext2fs_bmap2(ext2_filsys fs, ext2_ino_t ino,
946 struct ext2_inode *inode,
947 char *block_buf, int bmap_flags, blk64_t block,
948 int *ret_flags, blk64_t *phys_blk);
949 errcode_t ext2fs_map_cluster_block(ext2_filsys fs, ext2_ino_t ino,
950 struct ext2_inode *inode, blk64_t lblk,
951 blk64_t *pblk);
952
953 #if 0
954 /* bmove.c */
955 extern errcode_t ext2fs_move_blocks(ext2_filsys fs,
956 ext2fs_block_bitmap reserve,
957 ext2fs_block_bitmap alloc_map,
958 int flags);
959 #endif
960
961 /* check_desc.c */
962 extern errcode_t ext2fs_check_desc(ext2_filsys fs);
963
964 /* closefs.c */
965 extern errcode_t ext2fs_close(ext2_filsys fs);
966 extern errcode_t ext2fs_close2(ext2_filsys fs, int flags);
967 extern errcode_t ext2fs_close_free(ext2_filsys *fs);
968 extern errcode_t ext2fs_flush(ext2_filsys fs);
969 extern errcode_t ext2fs_flush2(ext2_filsys fs, int flags);
970 extern int ext2fs_bg_has_super(ext2_filsys fs, dgrp_t group_block);
971 extern errcode_t ext2fs_super_and_bgd_loc2(ext2_filsys fs,
972 dgrp_t group,
973 blk64_t *ret_super_blk,
974 blk64_t *ret_old_desc_blk,
975 blk64_t *ret_new_desc_blk,
976 blk_t *ret_used_blks);
977 extern int ext2fs_super_and_bgd_loc(ext2_filsys fs,
978 dgrp_t group,
979 blk_t *ret_super_blk,
980 blk_t *ret_old_desc_blk,
981 blk_t *ret_new_desc_blk,
982 int *ret_meta_bg);
983 extern void ext2fs_update_dynamic_rev(ext2_filsys fs);
984
985 /* crc32c.c */
986 extern __u32 ext2fs_crc32_be(__u32 crc, unsigned char const *p, size_t len);
987 extern __u32 ext2fs_crc32c_le(__u32 crc, unsigned char const *p, size_t len);
988
989 /* csum.c */
990 extern void ext2fs_init_csum_seed(ext2_filsys fs);
991 extern errcode_t ext2fs_mmp_csum_set(ext2_filsys fs, struct mmp_struct *mmp);
992 extern int ext2fs_mmp_csum_verify(ext2_filsys, struct mmp_struct *mmp);
993 extern int ext2fs_verify_csum_type(ext2_filsys fs, struct ext2_super_block *sb);
994 extern errcode_t ext2fs_superblock_csum_set(ext2_filsys fs,
995 struct ext2_super_block *sb);
996 extern int ext2fs_superblock_csum_verify(ext2_filsys fs,
997 struct ext2_super_block *sb);
998 extern errcode_t ext2fs_ext_attr_block_csum_set(ext2_filsys fs,
999 ext2_ino_t inum, blk64_t block,
1000 struct ext2_ext_attr_header *hdr);
1001 extern int ext2fs_ext_attr_block_csum_verify(ext2_filsys fs, ext2_ino_t inum,
1002 blk64_t block,
1003 struct ext2_ext_attr_header *hdr);
1004 #define EXT2_DIRENT_TAIL(block, blocksize) \
1005 ((struct ext2_dir_entry_tail *)(((char *)(block)) + \
1006 (blocksize) - sizeof(struct ext2_dir_entry_tail)))
1007
1008 extern void ext2fs_initialize_dirent_tail(ext2_filsys fs,
1009 struct ext2_dir_entry_tail *t);
1010 extern int ext2fs_dirent_has_tail(ext2_filsys fs,
1011 struct ext2_dir_entry *dirent);
1012 extern int ext2fs_dirent_csum_verify(ext2_filsys fs, ext2_ino_t inum,
1013 struct ext2_dir_entry *dirent);
1014 extern int ext2fs_dir_block_csum_verify(ext2_filsys fs, ext2_ino_t inum,
1015 struct ext2_dir_entry *dirent);
1016 extern errcode_t ext2fs_dir_block_csum_set(ext2_filsys fs, ext2_ino_t inum,
1017 struct ext2_dir_entry *dirent);
1018 extern errcode_t ext2fs_get_dx_countlimit(ext2_filsys fs,
1019 struct ext2_dir_entry *dirent,
1020 struct ext2_dx_countlimit **cc,
1021 int *offset);
1022 extern errcode_t ext2fs_extent_block_csum_set(ext2_filsys fs,
1023 ext2_ino_t inum,
1024 struct ext3_extent_header *eh);
1025 extern int ext2fs_extent_block_csum_verify(ext2_filsys fs,
1026 ext2_ino_t inum,
1027 struct ext3_extent_header *eh);
1028 extern errcode_t ext2fs_block_bitmap_csum_set(ext2_filsys fs, dgrp_t group,
1029 char *bitmap, int size);
1030 extern int ext2fs_block_bitmap_csum_verify(ext2_filsys fs, dgrp_t group,
1031 char *bitmap, int size);
1032 extern errcode_t ext2fs_inode_bitmap_csum_set(ext2_filsys fs, dgrp_t group,
1033 char *bitmap, int size);
1034 extern int ext2fs_inode_bitmap_csum_verify(ext2_filsys fs, dgrp_t group,
1035 char *bitmap, int size);
1036 extern errcode_t ext2fs_inode_csum_set(ext2_filsys fs, ext2_ino_t inum,
1037 struct ext2_inode_large *inode);
1038 extern int ext2fs_inode_csum_verify(ext2_filsys fs, ext2_ino_t inum,
1039 struct ext2_inode_large *inode);
1040 extern void ext2fs_group_desc_csum_set(ext2_filsys fs, dgrp_t group);
1041 extern int ext2fs_group_desc_csum_verify(ext2_filsys fs, dgrp_t group);
1042 extern errcode_t ext2fs_set_gdt_csum(ext2_filsys fs);
1043 extern __u16 ext2fs_group_desc_csum(ext2_filsys fs, dgrp_t group);
1044
1045 /* dblist.c */
1046 extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist);
1047 extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ext2_ino_t ino,
1048 blk_t blk, int blockcnt);
1049 extern errcode_t ext2fs_add_dir_block2(ext2_dblist dblist, ext2_ino_t ino,
1050 blk64_t blk, e2_blkcnt_t blockcnt);
1051 extern void ext2fs_dblist_sort(ext2_dblist dblist,
1052 EXT2_QSORT_TYPE (*sortfunc)(const void *,
1053 const void *));
1054 extern void ext2fs_dblist_sort2(ext2_dblist dblist,
1055 EXT2_QSORT_TYPE (*sortfunc)(const void *,
1056 const void *));
1057 extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist,
1058 int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info,
1059 void *priv_data),
1060 void *priv_data);
1061 extern errcode_t ext2fs_dblist_iterate2(ext2_dblist dblist,
1062 int (*func)(ext2_filsys fs, struct ext2_db_entry2 *db_info,
1063 void *priv_data),
1064 void *priv_data);
1065 extern errcode_t ext2fs_dblist_iterate3(ext2_dblist dblist,
1066 int (*func)(ext2_filsys fs, struct ext2_db_entry2 *db_info,
1067 void *priv_data),
1068 unsigned long long start,
1069 unsigned long long count,
1070 void *priv_data);
1071 extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ext2_ino_t ino,
1072 blk_t blk, int blockcnt);
1073 extern errcode_t ext2fs_set_dir_block2(ext2_dblist dblist, ext2_ino_t ino,
1074 blk64_t blk, e2_blkcnt_t blockcnt);
1075 extern errcode_t ext2fs_copy_dblist(ext2_dblist src,
1076 ext2_dblist *dest);
1077 extern int ext2fs_dblist_count(ext2_dblist dblist);
1078 extern blk64_t ext2fs_dblist_count2(ext2_dblist dblist);
1079 extern errcode_t ext2fs_dblist_get_last(ext2_dblist dblist,
1080 struct ext2_db_entry **entry);
1081 extern errcode_t ext2fs_dblist_get_last2(ext2_dblist dblist,
1082 struct ext2_db_entry2 **entry);
1083 extern errcode_t ext2fs_dblist_drop_last(ext2_dblist dblist);
1084
1085 /* dblist_dir.c */
1086 extern errcode_t
1087 ext2fs_dblist_dir_iterate(ext2_dblist dblist,
1088 int flags,
1089 char *block_buf,
1090 int (*func)(ext2_ino_t dir,
1091 int entry,
1092 struct ext2_dir_entry *dirent,
1093 int offset,
1094 int blocksize,
1095 char *buf,
1096 void *priv_data),
1097 void *priv_data);
1098
1099 #if 0
1100 /* digest_encode.c */
1101 #define EXT2FS_DIGEST_SIZE EXT2FS_SHA256_LENGTH
1102 extern int ext2fs_digest_encode(const char *src, int len, char *dst);
1103 extern int ext2fs_digest_decode(const char *src, int len, char *dst);
1104 #endif
1105
1106 /* dirblock.c */
1107 extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block,
1108 void *buf);
1109 extern errcode_t ext2fs_read_dir_block2(ext2_filsys fs, blk_t block,
1110 void *buf, int flags);
1111 extern errcode_t ext2fs_read_dir_block3(ext2_filsys fs, blk64_t block,
1112 void *buf, int flags);
1113 extern errcode_t ext2fs_read_dir_block4(ext2_filsys fs, blk64_t block,
1114 void *buf, int flags, ext2_ino_t ino);
1115 extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block,
1116 void *buf);
1117 extern errcode_t ext2fs_write_dir_block2(ext2_filsys fs, blk_t block,
1118 void *buf, int flags);
1119 extern errcode_t ext2fs_write_dir_block3(ext2_filsys fs, blk64_t block,
1120 void *buf, int flags);
1121 extern errcode_t ext2fs_write_dir_block4(ext2_filsys fs, blk64_t block,
1122 void *buf, int flags, ext2_ino_t ino);
1123
1124 /* dirhash.c */
1125 extern errcode_t ext2fs_dirhash(int version, const char *name, int len,
1126 const __u32 *seed,
1127 ext2_dirhash_t *ret_hash,
1128 ext2_dirhash_t *ret_minor_hash);
1129
1130
1131 /* dir_iterate.c */
1132 extern errcode_t ext2fs_get_rec_len(ext2_filsys fs,
1133 struct ext2_dir_entry *dirent,
1134 unsigned int *rec_len);
1135 extern errcode_t ext2fs_set_rec_len(ext2_filsys fs,
1136 unsigned int len,
1137 struct ext2_dir_entry *dirent);
1138 extern errcode_t ext2fs_dir_iterate(ext2_filsys fs,
1139 ext2_ino_t dir,
1140 int flags,
1141 char *block_buf,
1142 int (*func)(struct ext2_dir_entry *dirent,
1143 int offset,
1144 int blocksize,
1145 char *buf,
1146 void *priv_data),
1147 void *priv_data);
1148 extern errcode_t ext2fs_dir_iterate2(ext2_filsys fs,
1149 ext2_ino_t dir,
1150 int flags,
1151 char *block_buf,
1152 int (*func)(ext2_ino_t dir,
1153 int entry,
1154 struct ext2_dir_entry *dirent,
1155 int offset,
1156 int blocksize,
1157 char *buf,
1158 void *priv_data),
1159 void *priv_data);
1160
1161 /* dupfs.c */
1162 extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest);
1163
1164 /* expanddir.c */
1165 extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir);
1166
1167 /* ext_attr.c */
1168 extern __u32 ext2fs_ext_attr_hash_entry(struct ext2_ext_attr_entry *entry,
1169 void *data);
1170 extern errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf);
1171 extern errcode_t ext2fs_read_ext_attr2(ext2_filsys fs, blk64_t block,
1172 void *buf);
1173 extern errcode_t ext2fs_read_ext_attr3(ext2_filsys fs, blk64_t block,
1174 void *buf, ext2_ino_t inum);
1175 extern errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block,
1176 void *buf);
1177 extern errcode_t ext2fs_write_ext_attr2(ext2_filsys fs, blk64_t block,
1178 void *buf);
1179 extern errcode_t ext2fs_write_ext_attr3(ext2_filsys fs, blk64_t block,
1180 void *buf, ext2_ino_t inum);
1181 extern errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk,
1182 char *block_buf,
1183 int adjust, __u32 *newcount);
1184 extern errcode_t ext2fs_adjust_ea_refcount2(ext2_filsys fs, blk64_t blk,
1185 char *block_buf,
1186 int adjust, __u32 *newcount);
1187 extern errcode_t ext2fs_adjust_ea_refcount3(ext2_filsys fs, blk64_t blk,
1188 char *block_buf,
1189 int adjust, __u32 *newcount,
1190 ext2_ino_t inum);
1191 errcode_t ext2fs_xattrs_write(struct ext2_xattr_handle *handle);
1192 errcode_t ext2fs_xattrs_read(struct ext2_xattr_handle *handle);
1193 errcode_t ext2fs_xattrs_iterate(struct ext2_xattr_handle *h,
1194 int (*func)(char *name, char *value,
1195 size_t value_len, void *data),
1196 void *data);
1197 errcode_t ext2fs_xattr_get(struct ext2_xattr_handle *h, const char *key,
1198 void **value, size_t *value_len);
1199 errcode_t ext2fs_xattr_set(struct ext2_xattr_handle *handle,
1200 const char *key,
1201 const void *value,
1202 size_t value_len);
1203 errcode_t ext2fs_xattr_remove(struct ext2_xattr_handle *handle,
1204 const char *key);
1205 errcode_t ext2fs_xattrs_open(ext2_filsys fs, ext2_ino_t ino,
1206 struct ext2_xattr_handle **handle);
1207 errcode_t ext2fs_xattrs_close(struct ext2_xattr_handle **handle);
1208 errcode_t ext2fs_free_ext_attr(ext2_filsys fs, ext2_ino_t ino,
1209 struct ext2_inode_large *inode);
1210 errcode_t ext2fs_xattrs_count(struct ext2_xattr_handle *handle, size_t *count);
1211 errcode_t ext2fs_xattr_inode_max_size(ext2_filsys fs, ext2_ino_t ino,
1212 size_t *size);
1213
1214 /* extent.c */
1215 extern errcode_t ext2fs_extent_header_verify(void *ptr, int size);
1216 extern errcode_t ext2fs_extent_open(ext2_filsys fs, ext2_ino_t ino,
1217 ext2_extent_handle_t *handle);
1218 extern errcode_t ext2fs_extent_open2(ext2_filsys fs, ext2_ino_t ino,
1219 struct ext2_inode *inode,
1220 ext2_extent_handle_t *ret_handle);
1221 extern void ext2fs_extent_free(ext2_extent_handle_t handle);
1222 extern errcode_t ext2fs_extent_get(ext2_extent_handle_t handle,
1223 int flags, struct ext2fs_extent *extent);
1224 extern errcode_t ext2fs_extent_node_split(ext2_extent_handle_t handle);
1225 extern errcode_t ext2fs_extent_replace(ext2_extent_handle_t handle, int flags,
1226 struct ext2fs_extent *extent);
1227 extern errcode_t ext2fs_extent_insert(ext2_extent_handle_t handle, int flags,
1228 struct ext2fs_extent *extent);
1229 extern errcode_t ext2fs_extent_set_bmap(ext2_extent_handle_t handle,
1230 blk64_t logical, blk64_t physical,
1231 int flags);
1232 extern errcode_t ext2fs_extent_delete(ext2_extent_handle_t handle, int flags);
1233 extern errcode_t ext2fs_extent_get_info(ext2_extent_handle_t handle,
1234 struct ext2_extent_info *info);
1235 extern errcode_t ext2fs_extent_goto(ext2_extent_handle_t handle,
1236 blk64_t blk);
1237 extern errcode_t ext2fs_extent_goto2(ext2_extent_handle_t handle,
1238 int leaf_level, blk64_t blk);
1239 extern errcode_t ext2fs_extent_fix_parents(ext2_extent_handle_t handle);
1240 size_t ext2fs_max_extent_depth(ext2_extent_handle_t handle);
1241
1242 /* fallocate.c */
1243 #define EXT2_FALLOCATE_ZERO_BLOCKS (0x1)
1244 #define EXT2_FALLOCATE_FORCE_INIT (0x2)
1245 #define EXT2_FALLOCATE_FORCE_UNINIT (0x4)
1246 #define EXT2_FALLOCATE_INIT_BEYOND_EOF (0x8)
1247 #define EXT2_FALLOCATE_ALL_FLAGS (0xF)
1248 errcode_t ext2fs_fallocate(ext2_filsys fs, int flags, ext2_ino_t ino,
1249 struct ext2_inode *inode, blk64_t goal,
1250 blk64_t start, blk64_t len);
1251
1252 /* fileio.c */
1253 extern errcode_t ext2fs_file_open2(ext2_filsys fs, ext2_ino_t ino,
1254 struct ext2_inode *inode,
1255 int flags, ext2_file_t *ret);
1256 extern errcode_t ext2fs_file_open(ext2_filsys fs, ext2_ino_t ino,
1257 int flags, ext2_file_t *ret);
1258 extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file);
1259 struct ext2_inode *ext2fs_file_get_inode(ext2_file_t file);
1260 extern ext2_ino_t ext2fs_file_get_inode_num(ext2_file_t file);
1261 extern errcode_t ext2fs_file_close(ext2_file_t file);
1262 extern errcode_t ext2fs_file_flush(ext2_file_t file);
1263 extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf,
1264 unsigned int wanted, unsigned int *got);
1265 extern errcode_t ext2fs_file_write(ext2_file_t file, const void *buf,
1266 unsigned int nbytes, unsigned int *written);
1267 extern errcode_t ext2fs_file_llseek(ext2_file_t file, __u64 offset,
1268 int whence, __u64 *ret_pos);
1269 extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset,
1270 int whence, ext2_off_t *ret_pos);
1271 errcode_t ext2fs_file_get_lsize(ext2_file_t file, __u64 *ret_size);
1272 extern ext2_off_t ext2fs_file_get_size(ext2_file_t file);
1273 extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size);
1274 extern errcode_t ext2fs_file_set_size2(ext2_file_t file, ext2_off64_t size);
1275
1276 /* finddev.c */
1277 extern char *ext2fs_find_block_device(dev_t device);
1278
1279 /* flushb.c */
1280 extern errcode_t ext2fs_sync_device(int fd, int flushb);
1281
1282 /* freefs.c */
1283 extern void ext2fs_free(ext2_filsys fs);
1284 extern void ext2fs_free_dblist(ext2_dblist dblist);
1285 extern void ext2fs_badblocks_list_free(ext2_badblocks_list bb);
1286 extern void ext2fs_u32_list_free(ext2_u32_list bb);
1287
1288 /* gen_bitmap.c */
1289 extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap);
1290 extern errcode_t ext2fs_make_generic_bitmap(errcode_t magic, ext2_filsys fs,
1291 __u32 start, __u32 end,
1292 __u32 real_end,
1293 const char *descr, char *init_map,
1294 ext2fs_generic_bitmap *ret);
1295 extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start,
1296 __u32 end,
1297 __u32 real_end,
1298 const char *descr,
1299 ext2fs_generic_bitmap *ret);
1300 extern errcode_t ext2fs_copy_generic_bitmap(ext2fs_generic_bitmap src,
1301 ext2fs_generic_bitmap *dest);
1302 extern void ext2fs_clear_generic_bitmap(ext2fs_generic_bitmap bitmap);
1303 extern errcode_t ext2fs_fudge_generic_bitmap_end(ext2fs_inode_bitmap bitmap,
1304 errcode_t magic,
1305 errcode_t neq,
1306 ext2_ino_t end,
1307 ext2_ino_t *oend);
1308 extern void ext2fs_set_generic_bitmap_padding(ext2fs_generic_bitmap map);
1309 extern errcode_t ext2fs_resize_generic_bitmap(errcode_t magic,
1310 __u32 new_end,
1311 __u32 new_real_end,
1312 ext2fs_generic_bitmap bmap);
1313 extern errcode_t ext2fs_compare_generic_bitmap(errcode_t magic, errcode_t neq,
1314 ext2fs_generic_bitmap bm1,
1315 ext2fs_generic_bitmap bm2);
1316 extern errcode_t ext2fs_get_generic_bitmap_range(ext2fs_generic_bitmap bmap,
1317 errcode_t magic,
1318 __u32 start, __u32 num,
1319 void *out);
1320 extern errcode_t ext2fs_set_generic_bitmap_range(ext2fs_generic_bitmap bmap,
1321 errcode_t magic,
1322 __u32 start, __u32 num,
1323 void *in);
1324 extern errcode_t ext2fs_find_first_zero_generic_bitmap(ext2fs_generic_bitmap bitmap,
1325 __u32 start, __u32 end,
1326 __u32 *out);
1327 extern errcode_t ext2fs_find_first_set_generic_bitmap(ext2fs_generic_bitmap bitmap,
1328 __u32 start, __u32 end,
1329 __u32 *out);
1330
1331 /* gen_bitmap64.c */
1332 void ext2fs_free_generic_bmap(ext2fs_generic_bitmap bmap);
1333 errcode_t ext2fs_alloc_generic_bmap(ext2_filsys fs, errcode_t magic,
1334 int type, __u64 start, __u64 end,
1335 __u64 real_end,
1336 const char *descr,
1337 ext2fs_generic_bitmap *ret);
1338 errcode_t ext2fs_copy_generic_bmap(ext2fs_generic_bitmap src,
1339 ext2fs_generic_bitmap *dest);
1340 void ext2fs_clear_generic_bmap(ext2fs_generic_bitmap bitmap);
1341 errcode_t ext2fs_fudge_generic_bmap_end(ext2fs_generic_bitmap bitmap,
1342 errcode_t neq,
1343 __u64 end, __u64 *oend);
1344 void ext2fs_set_generic_bmap_padding(ext2fs_generic_bitmap bmap);
1345 errcode_t ext2fs_resize_generic_bmap(ext2fs_generic_bitmap bmap,
1346 __u64 new_end,
1347 __u64 new_real_end);
1348 errcode_t ext2fs_compare_generic_bmap(errcode_t neq,
1349 ext2fs_generic_bitmap bm1,
1350 ext2fs_generic_bitmap bm2);
1351 errcode_t ext2fs_get_generic_bmap_range(ext2fs_generic_bitmap bmap,
1352 __u64 start, unsigned int num,
1353 void *out);
1354 errcode_t ext2fs_set_generic_bmap_range(ext2fs_generic_bitmap bmap,
1355 __u64 start, unsigned int num,
1356 void *in);
1357 errcode_t ext2fs_convert_subcluster_bitmap(ext2_filsys fs,
1358 ext2fs_block_bitmap *bitmap);
1359
1360 /* get_num_dirs.c */
1361 extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs);
1362
1363 /* getsize.c */
1364 extern errcode_t ext2fs_get_device_size(const char *file, int blocksize,
1365 blk_t *retblocks);
1366 extern errcode_t ext2fs_get_device_size2(const char *file, int blocksize,
1367 blk64_t *retblocks);
1368
1369 /* getsectsize.c */
1370 extern int ext2fs_get_dio_alignment(int fd);
1371 errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize);
1372 errcode_t ext2fs_get_device_phys_sectsize(const char *file, int *sectsize);
1373
1374 /* i_block.c */
1375 errcode_t ext2fs_iblk_add_blocks(ext2_filsys fs, struct ext2_inode *inode,
1376 blk64_t num_blocks);
1377 errcode_t ext2fs_iblk_sub_blocks(ext2_filsys fs, struct ext2_inode *inode,
1378 blk64_t num_blocks);
1379 errcode_t ext2fs_iblk_set(ext2_filsys fs, struct ext2_inode *inode, blk64_t b);
1380
1381 /* imager.c */
1382 extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags);
1383 extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags);
1384 extern errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd, int flags);
1385 extern errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd, int flags);
1386 extern errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags);
1387 extern errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags);
1388
1389 /* ind_block.c */
1390 errcode_t ext2fs_read_ind_block(ext2_filsys fs, blk_t blk, void *buf);
1391 errcode_t ext2fs_write_ind_block(ext2_filsys fs, blk_t blk, void *buf);
1392
1393 /* initialize.c */
1394 extern errcode_t ext2fs_initialize(const char *name, int flags,
1395 struct ext2_super_block *param,
1396 io_manager manager, ext2_filsys *ret_fs);
1397
1398 /* icount.c */
1399 extern void ext2fs_free_icount(ext2_icount_t icount);
1400 extern errcode_t ext2fs_create_icount_tdb(ext2_filsys fs, char *tdb_dir,
1401 int flags, ext2_icount_t *ret);
1402 extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags,
1403 unsigned int size,
1404 ext2_icount_t hint, ext2_icount_t *ret);
1405 extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags,
1406 unsigned int size,
1407 ext2_icount_t *ret);
1408 extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ext2_ino_t ino,
1409 __u16 *ret);
1410 extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ext2_ino_t ino,
1411 __u16 *ret);
1412 extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ext2_ino_t ino,
1413 __u16 *ret);
1414 extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ext2_ino_t ino,
1415 __u16 count);
1416 extern ext2_ino_t ext2fs_get_icount_size(ext2_icount_t icount);
1417 errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *);
1418
1419 /* inline.c */
1420
1421 extern errcode_t ext2fs_get_memalign(unsigned long size,
1422 unsigned long align, void *ptr);
1423
1424 /* inline_data.c */
1425 extern errcode_t ext2fs_inline_data_init(ext2_filsys fs, ext2_ino_t ino);
1426 extern errcode_t ext2fs_inline_data_size(ext2_filsys fs, ext2_ino_t ino,
1427 size_t *size);
1428 extern errcode_t ext2fs_inline_data_get(ext2_filsys fs, ext2_ino_t ino,
1429 struct ext2_inode *inode,
1430 void *buf, size_t *size);
1431 extern errcode_t ext2fs_inline_data_set(ext2_filsys fs, ext2_ino_t ino,
1432 struct ext2_inode *inode,
1433 void *buf, size_t size);
1434
1435 /* inode.c */
1436 extern errcode_t ext2fs_create_inode_cache(ext2_filsys fs,
1437 unsigned int cache_size);
1438 extern void ext2fs_free_inode_cache(struct ext2_inode_cache *icache);
1439 extern errcode_t ext2fs_flush_icache(ext2_filsys fs);
1440 extern errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan,
1441 ext2_ino_t *ino,
1442 struct ext2_inode *inode,
1443 int bufsize);
1444 #define EXT2_INODE_SCAN_DEFAULT_BUFFER_BLOCKS 8
1445 extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks,
1446 ext2_inode_scan *ret_scan);
1447 extern void ext2fs_close_inode_scan(ext2_inode_scan scan);
1448 extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino,
1449 struct ext2_inode *inode);
1450 extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan,
1451 int group);
1452 extern void ext2fs_set_inode_callback
1453 (ext2_inode_scan scan,
1454 errcode_t (*done_group)(ext2_filsys fs,
1455 ext2_inode_scan scan,
1456 dgrp_t group,
1457 void * priv_data),
1458 void *done_group_data);
1459 extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags,
1460 int clear_flags);
1461 extern errcode_t ext2fs_read_inode_full(ext2_filsys fs, ext2_ino_t ino,
1462 struct ext2_inode * inode,
1463 int bufsize);
1464 extern errcode_t ext2fs_read_inode (ext2_filsys fs, ext2_ino_t ino,
1465 struct ext2_inode * inode);
1466 extern errcode_t ext2fs_write_inode_full(ext2_filsys fs, ext2_ino_t ino,
1467 struct ext2_inode * inode,
1468 int bufsize);
1469 extern errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino,
1470 struct ext2_inode * inode);
1471 extern errcode_t ext2fs_write_new_inode(ext2_filsys fs, ext2_ino_t ino,
1472 struct ext2_inode * inode);
1473 extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks);
1474 extern errcode_t ext2fs_check_directory(ext2_filsys fs, ext2_ino_t ino);
1475
1476 /* inode_io.c */
1477 extern io_manager inode_io_manager;
1478 extern errcode_t ext2fs_inode_io_intern(ext2_filsys fs, ext2_ino_t ino,
1479 char **name);
1480 extern errcode_t ext2fs_inode_io_intern2(ext2_filsys fs, ext2_ino_t ino,
1481 struct ext2_inode *inode,
1482 char **name);
1483
1484 /* ismounted.c */
1485 extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags);
1486 extern errcode_t ext2fs_check_mount_point(const char *device, int *mount_flags,
1487 char *mtpt, int mtlen);
1488
1489 /* punch.c */
1490 /*
1491 * NOTE: This function removes from an inode the blocks "start", "end", and
1492 * every block in between.
1493 */
1494 extern errcode_t ext2fs_punch(ext2_filsys fs, ext2_ino_t ino,
1495 struct ext2_inode *inode,
1496 char *block_buf, blk64_t start,
1497 blk64_t end);
1498
1499 /* namei.c */
1500 extern errcode_t ext2fs_lookup(ext2_filsys fs, ext2_ino_t dir, const char *name,
1501 int namelen, char *buf, ext2_ino_t *inode);
1502 extern errcode_t ext2fs_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
1503 const char *name, ext2_ino_t *inode);
1504 errcode_t ext2fs_namei_follow(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
1505 const char *name, ext2_ino_t *inode);
1506 extern errcode_t ext2fs_follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
1507 ext2_ino_t inode, ext2_ino_t *res_inode);
1508
1509 /* native.c */
1510 int ext2fs_native_flag(void);
1511
1512 /* newdir.c */
1513 extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino,
1514 ext2_ino_t parent_ino, char **block);
1515 extern errcode_t ext2fs_new_dir_inline_data(ext2_filsys fs, ext2_ino_t dir_ino,
1516 ext2_ino_t parent_ino, __u32 *iblock);
1517
1518 /* mkdir.c */
1519 extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum,
1520 const char *name);
1521
1522 /* mkjournal.c */
1523 extern errcode_t ext2fs_zero_blocks(ext2_filsys fs, blk_t blk, int num,
1524 blk_t *ret_blk, int *ret_count);
1525 extern errcode_t ext2fs_zero_blocks2(ext2_filsys fs, blk64_t blk, int num,
1526 blk64_t *ret_blk, int *ret_count);
1527 extern errcode_t ext2fs_create_journal_superblock(ext2_filsys fs,
1528 __u32 num_blocks, int flags,
1529 char **ret_jsb);
1530 extern errcode_t ext2fs_add_journal_device(ext2_filsys fs,
1531 ext2_filsys journal_dev);
1532 extern errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t num_blocks,
1533 int flags);
1534 extern errcode_t ext2fs_add_journal_inode2(ext2_filsys fs, blk_t num_blocks,
1535 blk64_t goal, int flags);
1536 extern int ext2fs_default_journal_size(__u64 num_blocks);
1537 extern int ext2fs_journal_sb_start(int blocksize);
1538
1539 /* openfs.c */
1540 extern errcode_t ext2fs_open(const char *name, int flags, int superblock,
1541 unsigned int block_size, io_manager manager,
1542 ext2_filsys *ret_fs);
1543 extern errcode_t ext2fs_open2(const char *name, const char *io_options,
1544 int flags, int superblock,
1545 unsigned int block_size, io_manager manager,
1546 ext2_filsys *ret_fs);
1547 /*
1548 * The dgrp_t argument to these two functions is not actually a group number
1549 * but a block number offset within a group table! Convert with the formula
1550 * (group_number / groups_per_block).
1551 */
1552 extern blk64_t ext2fs_descriptor_block_loc2(ext2_filsys fs,
1553 blk64_t group_block, dgrp_t i);
1554 extern blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block,
1555 dgrp_t i);
1556 errcode_t ext2fs_get_data_io(ext2_filsys fs, io_channel *old_io);
1557 errcode_t ext2fs_set_data_io(ext2_filsys fs, io_channel new_io);
1558 errcode_t ext2fs_rewrite_to_io(ext2_filsys fs, io_channel new_io);
1559
1560 /* get_pathname.c */
1561 extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino,
1562 char **name);
1563
1564 /* link.c */
1565 errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name,
1566 ext2_ino_t ino, int flags);
1567 errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir, const char *name,
1568 ext2_ino_t ino, int flags);
1569
1570 /* symlink.c */
1571 errcode_t ext2fs_symlink(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t ino,
1572 const char *name, const char *target);
1573
1574 /* mmp.c */
1575 errcode_t ext2fs_mmp_read(ext2_filsys fs, blk64_t mmp_blk, void *buf);
1576 errcode_t ext2fs_mmp_write(ext2_filsys fs, blk64_t mmp_blk, void *buf);
1577 errcode_t ext2fs_mmp_clear(ext2_filsys fs);
1578 errcode_t ext2fs_mmp_init(ext2_filsys fs);
1579 errcode_t ext2fs_mmp_start(ext2_filsys fs);
1580 errcode_t ext2fs_mmp_update(ext2_filsys fs);
1581 errcode_t ext2fs_mmp_update2(ext2_filsys fs, int immediately);
1582 errcode_t ext2fs_mmp_stop(ext2_filsys fs);
1583 unsigned ext2fs_mmp_new_seq(void);
1584
1585 /* read_bb.c */
1586 extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs,
1587 ext2_badblocks_list *bb_list);
1588
1589 /* read_bb_file.c */
1590 extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f,
1591 ext2_badblocks_list *bb_list,
1592 void *priv_data,
1593 void (*invalid)(ext2_filsys fs,
1594 blk_t blk,
1595 char *badstr,
1596 void *priv_data));
1597 extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f,
1598 ext2_badblocks_list *bb_list,
1599 void (*invalid)(ext2_filsys fs,
1600 blk_t blk));
1601
1602 /* res_gdt.c */
1603 extern errcode_t ext2fs_create_resize_inode(ext2_filsys fs);
1604
1605 /*sha256.c */
1606 #define EXT2FS_SHA256_LENGTH 32
1607 #if 0
1608 extern void ext2fs_sha256(const unsigned char *in, unsigned long in_size,
1609 unsigned char out[EXT2FS_SHA256_LENGTH]);
1610 #endif
1611
1612 /* sha512.c */
1613 #define EXT2FS_SHA512_LENGTH 64
1614 extern void ext2fs_sha512(const unsigned char *in, unsigned long in_size,
1615 unsigned char out[EXT2FS_SHA512_LENGTH]);
1616
1617 /* swapfs.c */
1618 extern errcode_t ext2fs_dirent_swab_in2(ext2_filsys fs, char *buf, size_t size,
1619 int flags);
1620 extern errcode_t ext2fs_dirent_swab_in(ext2_filsys fs, char *buf, int flags);
1621 extern errcode_t ext2fs_dirent_swab_out2(ext2_filsys fs, char *buf, size_t size,
1622 int flags);
1623 extern errcode_t ext2fs_dirent_swab_out(ext2_filsys fs, char *buf, int flags);
1624 extern void ext2fs_swap_ext_attr(char *to, char *from, int bufsize,
1625 int has_header);
1626 extern void ext2fs_swap_ext_attr_header(struct ext2_ext_attr_header *to_header,
1627 struct ext2_ext_attr_header *from_hdr);
1628 extern void ext2fs_swap_ext_attr_entry(struct ext2_ext_attr_entry *to_entry,
1629 struct ext2_ext_attr_entry *from_entry);
1630 extern void ext2fs_swap_super(struct ext2_super_block * super);
1631 extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp);
1632 extern void ext2fs_swap_group_desc2(ext2_filsys, struct ext2_group_desc *gdp);
1633 extern void ext2fs_swap_inode_full(ext2_filsys fs, struct ext2_inode_large *t,
1634 struct ext2_inode_large *f, int hostorder,
1635 int bufsize);
1636 extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t,
1637 struct ext2_inode *f, int hostorder);
1638 extern void ext2fs_swap_mmp(struct mmp_struct *mmp);
1639
1640 /* unix_io.c */
1641 extern int ext2fs_open_file(const char *pathname, int flags, mode_t mode);
1642 extern int ext2fs_stat(const char *path, ext2fs_struct_stat *buf);
1643 extern int ext2fs_fstat(int fd, ext2fs_struct_stat *buf);
1644
1645 /* valid_blk.c */
1646 extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode);
1647 extern int ext2fs_inode_has_valid_blocks2(ext2_filsys fs,
1648 struct ext2_inode *inode);
1649
1650 /* version.c */
1651 extern int ext2fs_parse_version_string(const char *ver_string);
1652 extern int ext2fs_get_library_version(const char **ver_string,
1653 const char **date_string);
1654
1655 /* write_bb_file.c */
1656 extern errcode_t ext2fs_write_bb_FILE(ext2_badblocks_list bb_list,
1657 unsigned int flags,
1658 FILE *f);
1659
1660
1661 /* inline functions */
1662 #ifdef NO_INLINE_FUNCS
1663 extern errcode_t ext2fs_get_mem(unsigned long size, void *ptr);
1664 extern errcode_t ext2fs_get_memzero(unsigned long size, void *ptr);
1665 extern errcode_t ext2fs_get_array(unsigned long count,
1666 unsigned long size, void *ptr);
1667 extern errcode_t ext2fs_get_arrayzero(unsigned long count,
1668 unsigned long size, void *ptr);
1669 extern errcode_t ext2fs_free_mem(void *ptr);
1670 extern errcode_t ext2fs_resize_mem(unsigned long old_size,
1671 unsigned long size, void *ptr);
1672 extern void ext2fs_mark_super_dirty(ext2_filsys fs);
1673 extern void ext2fs_mark_changed(ext2_filsys fs);
1674 extern int ext2fs_test_changed(ext2_filsys fs);
1675 extern void ext2fs_mark_valid(ext2_filsys fs);
1676 extern void ext2fs_unmark_valid(ext2_filsys fs);
1677 extern int ext2fs_test_valid(ext2_filsys fs);
1678 extern void ext2fs_mark_ib_dirty(ext2_filsys fs);
1679 extern void ext2fs_mark_bb_dirty(ext2_filsys fs);
1680 extern int ext2fs_test_ib_dirty(ext2_filsys fs);
1681 extern int ext2fs_test_bb_dirty(ext2_filsys fs);
1682 extern dgrp_t ext2fs_group_of_blk(ext2_filsys fs, blk_t blk);
1683 extern dgrp_t ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino);
1684 extern blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group);
1685 extern blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group);
1686 extern blk_t ext2fs_inode_data_blocks(ext2_filsys fs,
1687 struct ext2_inode *inode);
1688 extern unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b);
1689 extern __u64 ext2fs_div64_ceil(__u64 a, __u64 b);
1690 extern int ext2fs_dirent_name_len(const struct ext2_dir_entry *entry);
1691 extern void ext2fs_dirent_set_name_len(struct ext2_dir_entry *entry, int len);
1692 extern int ext2fs_dirent_file_type(const struct ext2_dir_entry *entry);
1693 extern void ext2fs_dirent_set_file_type(struct ext2_dir_entry *entry, int type);
1694
1695 #endif
1696
1697 /*
1698 * The actual inlined functions definitions themselves...
1699 *
1700 * If NO_INLINE_FUNCS is defined, then we won't try to do inline
1701 * functions at all!
1702 */
1703 #if (defined(INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS))
1704 #ifdef INCLUDE_INLINE_FUNCS
1705 #define _INLINE_ extern
1706 #else
1707 #if (__STDC_VERSION__ >= 199901L)
1708 #define _INLINE_ inline
1709 #else
1710 #ifdef __GNUC__
1711 #define _INLINE_ extern __inline__
1712 #else /* For Watcom C */
1713 #define _INLINE_ extern inline
1714 #endif /* __GNUC__ */
1715 #endif /* __STDC_VERSION__ >= 199901L */
1716 #endif
1717
1718 #ifndef EXT2_CUSTOM_MEMORY_ROUTINES
1719 #include <string.h>
1720 /*
1721 * Allocate memory. The 'ptr' arg must point to a pointer.
1722 */
1723 _INLINE_ errcode_t ext2fs_get_mem(unsigned long size, void *ptr)
1724 {
1725 void *pp;
1726
1727 pp = malloc(size);
1728 if (!pp)
1729 return EXT2_ET_NO_MEMORY;
1730 memcpy(ptr, &pp, sizeof (pp));
1731 return 0;
1732 }
1733
1734 _INLINE_ errcode_t ext2fs_get_memzero(unsigned long size, void *ptr)
1735 {
1736 void *pp;
1737
1738 pp = malloc(size);
1739 if (!pp)
1740 return EXT2_ET_NO_MEMORY;
1741 memset(pp, 0, size);
1742 memcpy(ptr, &pp, sizeof(pp));
1743 return 0;
1744 }
1745
1746 _INLINE_ errcode_t ext2fs_get_array(unsigned long count, unsigned long size, void *ptr)
1747 {
1748 if (count && (~0UL)/count < size)
1749 return EXT2_ET_NO_MEMORY;
1750 return ext2fs_get_mem(count*size, ptr);
1751 }
1752
1753 _INLINE_ errcode_t ext2fs_get_arrayzero(unsigned long count,
1754 unsigned long size, void *ptr)
1755 {
1756 void *pp;
1757
1758 if (count && (~0UL)/count < size)
1759 return EXT2_ET_NO_MEMORY;
1760 pp = calloc(count, size);
1761 if (!pp)
1762 return EXT2_ET_NO_MEMORY;
1763 memcpy(ptr, &pp, sizeof(pp));
1764 return 0;
1765 }
1766
1767 /*
1768 * Free memory. The 'ptr' arg must point to a pointer.
1769 */
1770 _INLINE_ errcode_t ext2fs_free_mem(void *ptr)
1771 {
1772 void *p;
1773
1774 memcpy(&p, ptr, sizeof(p));
1775 free(p);
1776 p = 0;
1777 memcpy(ptr, &p, sizeof(p));
1778 return 0;
1779 }
1780
1781 /*
1782 * Resize memory. The 'ptr' arg must point to a pointer.
1783 */
1784 _INLINE_ errcode_t ext2fs_resize_mem(unsigned long EXT2FS_ATTR((unused)) old_size,
1785 unsigned long size, void *ptr)
1786 {
1787 void *p;
1788
1789 /* Use "memcpy" for pointer assignments here to avoid problems
1790 * with C99 strict type aliasing rules. */
1791 memcpy(&p, ptr, sizeof(p));
1792 p = realloc(p, size);
1793 if (!p)
1794 return EXT2_ET_NO_MEMORY;
1795 memcpy(ptr, &p, sizeof(p));
1796 return 0;
1797 }
1798 #endif /* Custom memory routines */
1799
1800 /*
1801 * Mark a filesystem superblock as dirty
1802 */
1803 _INLINE_ void ext2fs_mark_super_dirty(ext2_filsys fs)
1804 {
1805 fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_CHANGED;
1806 }
1807
1808 /*
1809 * Mark a filesystem as changed
1810 */
1811 _INLINE_ void ext2fs_mark_changed(ext2_filsys fs)
1812 {
1813 fs->flags |= EXT2_FLAG_CHANGED;
1814 }
1815
1816 /*
1817 * Check to see if a filesystem has changed
1818 */
1819 _INLINE_ int ext2fs_test_changed(ext2_filsys fs)
1820 {
1821 return (fs->flags & EXT2_FLAG_CHANGED);
1822 }
1823
1824 /*
1825 * Mark a filesystem as valid
1826 */
1827 _INLINE_ void ext2fs_mark_valid(ext2_filsys fs)
1828 {
1829 fs->flags |= EXT2_FLAG_VALID;
1830 }
1831
1832 /*
1833 * Mark a filesystem as NOT valid
1834 */
1835 _INLINE_ void ext2fs_unmark_valid(ext2_filsys fs)
1836 {
1837 fs->flags &= ~EXT2_FLAG_VALID;
1838 }
1839
1840 /*
1841 * Check to see if a filesystem is valid
1842 */
1843 _INLINE_ int ext2fs_test_valid(ext2_filsys fs)
1844 {
1845 return (fs->flags & EXT2_FLAG_VALID);
1846 }
1847
1848 /*
1849 * Mark the inode bitmap as dirty
1850 */
1851 _INLINE_ void ext2fs_mark_ib_dirty(ext2_filsys fs)
1852 {
1853 fs->flags |= EXT2_FLAG_IB_DIRTY | EXT2_FLAG_CHANGED;
1854 }
1855
1856 /*
1857 * Mark the block bitmap as dirty
1858 */
1859 _INLINE_ void ext2fs_mark_bb_dirty(ext2_filsys fs)
1860 {
1861 fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_CHANGED;
1862 }
1863
1864 /*
1865 * Check to see if a filesystem's inode bitmap is dirty
1866 */
1867 _INLINE_ int ext2fs_test_ib_dirty(ext2_filsys fs)
1868 {
1869 return (fs->flags & EXT2_FLAG_IB_DIRTY);
1870 }
1871
1872 /*
1873 * Check to see if a filesystem's block bitmap is dirty
1874 */
1875 _INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs)
1876 {
1877 return (fs->flags & EXT2_FLAG_BB_DIRTY);
1878 }
1879
1880 /*
1881 * Return the group # of a block
1882 */
1883 _INLINE_ dgrp_t ext2fs_group_of_blk(ext2_filsys fs, blk_t blk)
1884 {
1885 return ext2fs_group_of_blk2(fs, blk);
1886 }
1887 /*
1888 * Return the group # of an inode number
1889 */
1890 _INLINE_ dgrp_t ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino)
1891 {
1892 return (ino - 1) / fs->super->s_inodes_per_group;
1893 }
1894
1895 /*
1896 * Return the first block (inclusive) in a group
1897 */
1898 _INLINE_ blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group)
1899 {
1900 return (blk_t) ext2fs_group_first_block2(fs, group);
1901 }
1902
1903 /*
1904 * Return the last block (inclusive) in a group
1905 */
1906 _INLINE_ blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group)
1907 {
1908 return (blk_t) ext2fs_group_last_block2(fs, group);
1909 }
1910
1911 _INLINE_ blk_t ext2fs_inode_data_blocks(ext2_filsys fs,
1912 struct ext2_inode *inode)
1913 {
1914 return (blk_t) ext2fs_inode_data_blocks2(fs, inode);
1915 }
1916
1917 /*
1918 * This is an efficient, overflow safe way of calculating ceil((1.0 * a) / b)
1919 */
1920 _INLINE_ unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b)
1921 {
1922 if (!a)
1923 return 0;
1924 return ((a - 1) / b) + 1;
1925 }
1926
1927 _INLINE_ __u64 ext2fs_div64_ceil(__u64 a, __u64 b)
1928 {
1929 if (!a)
1930 return 0;
1931 return ((a - 1) / b) + 1;
1932 }
1933
1934 _INLINE_ int ext2fs_dirent_name_len(const struct ext2_dir_entry *entry)
1935 {
1936 return entry->name_len & 0xff;
1937 }
1938
1939 _INLINE_ void ext2fs_dirent_set_name_len(struct ext2_dir_entry *entry, int len)
1940 {
1941 entry->name_len = (entry->name_len & 0xff00) | (len & 0xff);
1942 }
1943
1944 _INLINE_ int ext2fs_dirent_file_type(const struct ext2_dir_entry *entry)
1945 {
1946 return entry->name_len >> 8;
1947 }
1948
1949 _INLINE_ void ext2fs_dirent_set_file_type(struct ext2_dir_entry *entry, int type)
1950 {
1951 entry->name_len = (entry->name_len & 0xff) | (type << 8);
1952 }
1953
1954 #undef _INLINE_
1955 #endif
1956
1957 #ifdef __cplusplus
1958 }
1959 #endif
1960
1961 #endif /* _EXT2FS_EXT2FS_H */
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