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 #ifndef __nonstring
22 #ifdef __has_attribute
23 #if __has_attribute(__nonstring__)
24 #define __nonstring __attribute__((__nonstring__))
25 #else
26 #define __nonstring
27 #endif /* __has_attribute(__nonstring__) */
28 #else
29 # define __nonstring
30 #endif /* __has_attribute */
31 #endif /* __nonstring */
32
33 #ifdef CONFIG_TDB
34 #define EXT2FS_NO_TDB_UNUSED
35 #else
36 #define EXT2FS_NO_TDB_UNUSED EXT2FS_ATTR((unused))
37 #endif
38
39 #ifdef __cplusplus
40 extern "C" {
41 #endif
42
43 /*
44 * Non-GNU C compilers won't necessarily understand inline
45 */
46 #if (!defined(__GNUC__) && !defined(__WATCOMC__))
47 #define NO_INLINE_FUNCS
48 #endif
49
50 /*
51 * Where the master copy of the superblock is located, and how big
52 * superblocks are supposed to be. We define SUPERBLOCK_SIZE because
53 * the size of the superblock structure is not necessarily trustworthy
54 * (some versions have the padding set up so that the superblock is
55 * 1032 bytes long).
56 */
57 #define SUPERBLOCK_OFFSET 1024
58 #define SUPERBLOCK_SIZE 1024
59
60 #define UUID_STR_SIZE 37
61
62 /*
63 * The last ext2fs revision level that this version of the library is
64 * able to support.
65 */
66 #define EXT2_LIB_CURRENT_REV EXT2_DYNAMIC_REV
67
68 #ifdef HAVE_SYS_TYPES_H
69 #include <sys/types.h>
70 #endif
71
72 #include <stdio.h>
73 #include <stdlib.h>
74 #include <string.h>
75 #include <time.h>
76 #include <errno.h>
77
78 #if EXT2_FLAT_INCLUDES
79 #include "e2_types.h"
80 #include "ext2_fs.h"
81 #include "ext3_extents.h"
82 #else
83 #include <ext2fs/ext2_types.h>
84 #include <ext2fs/ext2_fs.h>
85 #include <ext2fs/ext3_extents.h>
86 #endif /* EXT2_FLAT_INCLUDES */
87
88 typedef __u32 __bitwise ext2_ino_t;
89 typedef __u32 __bitwise blk_t;
90 typedef __u64 __bitwise blk64_t;
91 typedef __u32 __bitwise dgrp_t;
92 typedef __s32 __bitwise ext2_off_t;
93 typedef __s64 __bitwise ext2_off64_t;
94 typedef __s64 __bitwise e2_blkcnt_t;
95 typedef __u32 __bitwise ext2_dirhash_t;
96
97 #if EXT2_FLAT_INCLUDES
98 #include "com_err.h"
99 #include "ext2_io.h"
100 #include "ext2_err.h"
101 #include "ext2_ext_attr.h"
102 #else
103 #include <et/com_err.h>
104 #include <ext2fs/ext2_io.h>
105 #include <ext2fs/ext2_err.h>
106 #include <ext2fs/ext2_ext_attr.h>
107 #endif
108
109 #include "hashmap.h"
110
111 /*
112 * Portability help for Microsoft Visual C++
113 */
114 #ifdef _MSC_VER
115 #define EXT2_QSORT_TYPE int __cdecl
116 #else
117 #define EXT2_QSORT_TYPE int
118 #endif
119
120 typedef struct struct_ext2_filsys *ext2_filsys;
121
122 #define EXT2FS_MARK_ERROR 0
123 #define EXT2FS_UNMARK_ERROR 1
124 #define EXT2FS_TEST_ERROR 2
125
126 struct ext2fs_struct_generic_bitmap_base {
127 errcode_t magic;
128 ext2_filsys fs;
129 };
130
131 typedef struct ext2fs_struct_generic_bitmap_base *ext2fs_generic_bitmap;
132 typedef struct ext2fs_struct_generic_bitmap_base *ext2fs_inode_bitmap;
133 typedef struct ext2fs_struct_generic_bitmap_base *ext2fs_block_bitmap;
134
135 #define EXT2_FIRST_INODE(s) EXT2_FIRST_INO(s)
136
137
138 /*
139 * Badblocks list definitions
140 */
141
142 typedef struct ext2_struct_u32_list *ext2_badblocks_list;
143 typedef struct ext2_struct_u32_iterate *ext2_badblocks_iterate;
144
145 typedef struct ext2_struct_u32_list *ext2_u32_list;
146 typedef struct ext2_struct_u32_iterate *ext2_u32_iterate;
147
148 /* old */
149 typedef struct ext2_struct_u32_list *badblocks_list;
150 typedef struct ext2_struct_u32_iterate *badblocks_iterate;
151
152 #define BADBLOCKS_FLAG_DIRTY 1
153
154 /*
155 * ext2_dblist structure and abstractions (see dblist.c)
156 */
157 struct ext2_db_entry2 {
158 ext2_ino_t ino;
159 blk64_t blk;
160 e2_blkcnt_t blockcnt;
161 };
162
163 /* Ye Olde 32-bit version */
164 struct ext2_db_entry {
165 ext2_ino_t ino;
166 blk_t blk;
167 int blockcnt;
168 };
169
170 typedef struct ext2_struct_dblist *ext2_dblist;
171
172 #define DBLIST_ABORT 1
173
174 /*
175 * ext2_fileio definitions
176 */
177
178 #define EXT2_FILE_WRITE 0x0001
179 #define EXT2_FILE_CREATE 0x0002
180
181 #define EXT2_FILE_MASK 0x00FF
182
183 #define EXT2_FILE_BUF_DIRTY 0x4000
184 #define EXT2_FILE_BUF_VALID 0x2000
185
186 typedef struct ext2_file *ext2_file_t;
187
188 #define EXT2_SEEK_SET 0
189 #define EXT2_SEEK_CUR 1
190 #define EXT2_SEEK_END 2
191
192 /*
193 * Flags for the ext2_filsys structure and for ext2fs_open()
194 */
195 #define EXT2_FLAG_RW 0x01
196 #define EXT2_FLAG_CHANGED 0x02
197 #define EXT2_FLAG_DIRTY 0x04
198 #define EXT2_FLAG_VALID 0x08
199 #define EXT2_FLAG_IB_DIRTY 0x10
200 #define EXT2_FLAG_BB_DIRTY 0x20
201 #define EXT2_FLAG_SWAP_BYTES 0x40
202 #define EXT2_FLAG_SWAP_BYTES_READ 0x80
203 #define EXT2_FLAG_SWAP_BYTES_WRITE 0x100
204 #define EXT2_FLAG_MASTER_SB_ONLY 0x200
205 #define EXT2_FLAG_FORCE 0x400
206 #define EXT2_FLAG_SUPER_ONLY 0x800
207 #define EXT2_FLAG_JOURNAL_DEV_OK 0x1000
208 #define EXT2_FLAG_IMAGE_FILE 0x2000
209 #define EXT2_FLAG_EXCLUSIVE 0x4000
210 #define EXT2_FLAG_SOFTSUPP_FEATURES 0x8000
211 #define EXT2_FLAG_NOFREE_ON_ERROR 0x10000
212 #define EXT2_FLAG_64BITS 0x20000
213 #define EXT2_FLAG_PRINT_PROGRESS 0x40000
214 #define EXT2_FLAG_DIRECT_IO 0x80000
215 #define EXT2_FLAG_SKIP_MMP 0x100000
216 #define EXT2_FLAG_IGNORE_CSUM_ERRORS 0x200000
217 #define EXT2_FLAG_SHARE_DUP 0x400000
218 #define EXT2_FLAG_IGNORE_SB_ERRORS 0x800000
219 #define EXT2_FLAG_BBITMAP_TAIL_PROBLEM 0x1000000
220 #define EXT2_FLAG_IBITMAP_TAIL_PROBLEM 0x2000000
221 #define EXT2_FLAG_THREADS 0x4000000
222
223 /*
224 * Special flag in the ext2 inode i_flag field that means that this is
225 * a new inode. (So that ext2_write_inode() can clear extra fields.)
226 */
227 #define EXT2_NEW_INODE_FL 0x80000000
228
229 /*
230 * Flags for mkjournal
231 */
232 #define EXT2_MKJOURNAL_V1_SUPER 0x0000001 /* create V1 superblock (deprecated) */
233 #define EXT2_MKJOURNAL_LAZYINIT 0x0000002 /* don't zero journal inode before use*/
234 #define EXT2_MKJOURNAL_NO_MNT_CHECK 0x0000004 /* don't check mount status */
235
236 /*
237 * Normal journal area size to fast commit area size ratio. This is used to
238 * set default size of fast commit area.
239 */
240 #define EXT2_JOURNAL_TO_FC_BLKS_RATIO 64
241
242 struct blk_alloc_ctx;
243 struct opaque_ext2_group_desc;
244
245 struct struct_ext2_filsys {
246 errcode_t magic;
247 io_channel io;
248 int flags;
249 char * device_name;
250 struct ext2_super_block * super;
251 unsigned int blocksize;
252 int fragsize;
253 dgrp_t group_desc_count;
254 unsigned long desc_blocks;
255 struct opaque_ext2_group_desc * group_desc;
256 unsigned int inode_blocks_per_group;
257 ext2fs_inode_bitmap inode_map;
258 ext2fs_block_bitmap block_map;
259 /* XXX FIXME-64: not 64-bit safe, but not used? */
260 errcode_t (*get_blocks)(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks);
261 errcode_t (*check_directory)(ext2_filsys fs, ext2_ino_t ino);
262 errcode_t (*write_bitmaps)(ext2_filsys fs);
263 errcode_t (*read_inode)(ext2_filsys fs, ext2_ino_t ino,
264 struct ext2_inode *inode);
265 errcode_t (*write_inode)(ext2_filsys fs, ext2_ino_t ino,
266 struct ext2_inode *inode);
267 ext2_badblocks_list badblocks;
268 ext2_dblist dblist;
269 __u32 stride; /* for mke2fs */
270 struct ext2_super_block * orig_super;
271 struct ext2_image_hdr * image_header;
272 __u32 umask;
273 time_t now;
274 int cluster_ratio_bits;
275 __u16 default_bitmap_type;
276 __u16 pad;
277 /*
278 * Reserved for future expansion
279 */
280 __u32 reserved[5];
281
282 /*
283 * Reserved for the use of the calling application.
284 */
285 void * priv_data;
286
287 /*
288 * Inode cache
289 */
290 struct ext2_inode_cache *icache;
291 io_channel image_io;
292
293 /*
294 * More callback functions
295 */
296 errcode_t (*get_alloc_block)(ext2_filsys fs, blk64_t goal,
297 blk64_t *ret);
298 errcode_t (*get_alloc_block2)(ext2_filsys fs, blk64_t goal,
299 blk64_t *ret, struct blk_alloc_ctx *ctx);
300 void (*block_alloc_stats)(ext2_filsys fs, blk64_t blk, int inuse);
301
302 /*
303 * Buffers for Multiple mount protection(MMP) block.
304 */
305 void *mmp_buf;
306 void *mmp_cmp;
307 int mmp_fd;
308
309 /*
310 * Time at which e2fsck last updated the MMP block.
311 */
312 long mmp_last_written;
313
314 /* progress operation functions */
315 struct ext2fs_progress_ops *progress_ops;
316
317 /* Precomputed FS UUID checksum for seeding other checksums */
318 __u32 csum_seed;
319
320 io_channel journal_io;
321 char *journal_name;
322
323 /* New block range allocation hooks */
324 errcode_t (*new_range)(ext2_filsys fs, int flags, blk64_t goal,
325 blk64_t len, blk64_t *pblk, blk64_t *plen);
326 void (*block_alloc_stats_range)(ext2_filsys fs, blk64_t blk, blk_t num,
327 int inuse);
328
329 /* hashmap for SHA of data blocks */
330 struct ext2fs_hashmap* block_sha_map;
331
332 const struct ext2fs_nls_table *encoding;
333 };
334
335 #if EXT2_FLAT_INCLUDES
336 #include "e2_bitops.h"
337 #else
338 #include <ext2fs/bitops.h>
339 #endif
340
341 /*
342 * 64-bit bitmap backend types
343 */
344 #define EXT2FS_BMAP64_BITARRAY 1
345 #define EXT2FS_BMAP64_RBTREE 2
346 #define EXT2FS_BMAP64_AUTODIR 3
347
348 /*
349 * Return flags for the block iterator functions
350 */
351 #define BLOCK_CHANGED 1
352 #define BLOCK_ABORT 2
353 #define BLOCK_ERROR 4
354 #define BLOCK_INLINE_DATA_CHANGED 8
355
356 /*
357 * Block interate flags
358 *
359 * BLOCK_FLAG_APPEND, or BLOCK_FLAG_HOLE, indicates that the interator
360 * function should be called on blocks where the block number is zero.
361 * This is used by ext2fs_expand_dir() to be able to add a new block
362 * to an inode. It can also be used for programs that want to be able
363 * to deal with files that contain "holes".
364 *
365 * BLOCK_FLAG_DEPTH_TRAVERSE indicates that the iterator function for
366 * the indirect, doubly indirect, etc. blocks should be called after
367 * all of the blocks contained in the indirect blocks are processed.
368 * This is useful if you are going to be deallocating blocks from an
369 * inode.
370 *
371 * BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be
372 * called for data blocks only.
373 *
374 * BLOCK_FLAG_READ_ONLY is a promise by the caller that it will not
375 * modify returned block number.
376 *
377 * BLOCK_FLAG_NO_LARGE is for internal use only. It informs
378 * ext2fs_block_iterate2 that large files won't be accepted.
379 */
380 #define BLOCK_FLAG_APPEND 1
381 #define BLOCK_FLAG_HOLE 1
382 #define BLOCK_FLAG_DEPTH_TRAVERSE 2
383 #define BLOCK_FLAG_DATA_ONLY 4
384 #define BLOCK_FLAG_READ_ONLY 8
385
386 #define BLOCK_FLAG_NO_LARGE 0x1000
387
388 /*
389 * Magic "block count" return values for the block iterator function.
390 */
391 #define BLOCK_COUNT_IND (-1)
392 #define BLOCK_COUNT_DIND (-2)
393 #define BLOCK_COUNT_TIND (-3)
394 #define BLOCK_COUNT_TRANSLATOR (-4)
395
396 #define BLOCK_ALLOC_UNKNOWN 0
397 #define BLOCK_ALLOC_DATA 1
398 #define BLOCK_ALLOC_METADATA 2
399
400 struct blk_alloc_ctx {
401 ext2_ino_t ino;
402 struct ext2_inode *inode;
403 blk64_t lblk;
404 int flags;
405 };
406
407 #if 0
408 /*
409 * Flags for ext2fs_move_blocks
410 */
411 #define EXT2_BMOVE_GET_DBLIST 0x0001
412 #define EXT2_BMOVE_DEBUG 0x0002
413 #endif
414
415 /*
416 * Generic (non-filesystem layout specific) extents structure
417 */
418
419 #define EXT2_EXTENT_FLAGS_LEAF 0x0001
420 #define EXT2_EXTENT_FLAGS_UNINIT 0x0002
421 #define EXT2_EXTENT_FLAGS_SECOND_VISIT 0x0004
422
423 struct ext2fs_extent {
424 blk64_t e_pblk; /* first physical block */
425 blk64_t e_lblk; /* first logical block extent covers */
426 __u32 e_len; /* number of blocks covered by extent */
427 __u32 e_flags; /* extent flags */
428 };
429
430 typedef struct ext2_extent_handle *ext2_extent_handle_t;
431 typedef struct ext2_extent_path *ext2_extent_path_t;
432
433 /*
434 * Flags used by ext2fs_extent_get()
435 */
436 #define EXT2_EXTENT_CURRENT 0x0000
437 #define EXT2_EXTENT_MOVE_MASK 0x000F
438 #define EXT2_EXTENT_ROOT 0x0001
439 #define EXT2_EXTENT_LAST_LEAF 0x0002
440 #define EXT2_EXTENT_FIRST_SIB 0x0003
441 #define EXT2_EXTENT_LAST_SIB 0x0004
442 #define EXT2_EXTENT_NEXT_SIB 0x0005
443 #define EXT2_EXTENT_PREV_SIB 0x0006
444 #define EXT2_EXTENT_NEXT_LEAF 0x0007
445 #define EXT2_EXTENT_PREV_LEAF 0x0008
446 #define EXT2_EXTENT_NEXT 0x0009
447 #define EXT2_EXTENT_PREV 0x000A
448 #define EXT2_EXTENT_UP 0x000B
449 #define EXT2_EXTENT_DOWN 0x000C
450 #define EXT2_EXTENT_DOWN_AND_LAST 0x000D
451
452 /*
453 * Flags used by ext2fs_extent_insert()
454 */
455 #define EXT2_EXTENT_INSERT_AFTER 0x0001 /* insert after handle loc'n */
456 #define EXT2_EXTENT_INSERT_NOSPLIT 0x0002 /* insert may not cause split */
457
458 /*
459 * Flags used by ext2fs_extent_delete()
460 */
461 #define EXT2_EXTENT_DELETE_KEEP_EMPTY 0x001 /* keep node if last extent gone */
462
463 /*
464 * Flags used by ext2fs_extent_set_bmap()
465 */
466 #define EXT2_EXTENT_SET_BMAP_UNINIT 0x0001
467
468 /*
469 * Data structure returned by ext2fs_extent_get_info()
470 */
471 struct ext2_extent_info {
472 int curr_entry;
473 int curr_level;
474 int num_entries;
475 int max_entries;
476 int max_depth;
477 int bytes_avail;
478 blk64_t max_lblk;
479 blk64_t max_pblk;
480 __u32 max_len;
481 __u32 max_uninit_len;
482 };
483
484 /*
485 * Flags for directory block reading and writing functions
486 */
487 #define EXT2_DIRBLOCK_V2_STRUCT 0x0001
488
489 /*
490 * Return flags for the directory iterator functions
491 */
492 #define DIRENT_CHANGED 1
493 #define DIRENT_ABORT 2
494 #define DIRENT_ERROR 3
495
496 /*
497 * Directory iterator flags
498 */
499
500 #define DIRENT_FLAG_INCLUDE_EMPTY 1
501 #define DIRENT_FLAG_INCLUDE_REMOVED 2
502 #define DIRENT_FLAG_INCLUDE_CSUM 4
503 #define DIRENT_FLAG_INCLUDE_INLINE_DATA 8
504
505 #define DIRENT_DOT_FILE 1
506 #define DIRENT_DOT_DOT_FILE 2
507 #define DIRENT_OTHER_FILE 3
508 #define DIRENT_DELETED_FILE 4
509 #define DIRENT_CHECKSUM 5
510
511 /*
512 * Inode scan definitions
513 */
514 typedef struct ext2_struct_inode_scan *ext2_inode_scan;
515
516 /*
517 * ext2fs_scan flags
518 */
519 #define EXT2_SF_CHK_BADBLOCKS 0x0001
520 #define EXT2_SF_BAD_INODE_BLK 0x0002
521 #define EXT2_SF_BAD_EXTRA_BYTES 0x0004
522 #define EXT2_SF_SKIP_MISSING_ITABLE 0x0008
523 #define EXT2_SF_DO_LAZY 0x0010
524 #define EXT2_SF_WARN_GARBAGE_INODES 0x0020
525
526 /*
527 * ext2fs_check_if_mounted flags
528 */
529 #define EXT2_MF_MOUNTED 1
530 #define EXT2_MF_ISROOT 2
531 #define EXT2_MF_READONLY 4
532 #define EXT2_MF_SWAP 8
533 #define EXT2_MF_BUSY 16
534
535 /*
536 * Ext2/linux mode flags. We define them here so that we don't need
537 * to depend on the OS's sys/stat.h, since we may be compiling on a
538 * non-Linux system.
539 */
540 #define LINUX_S_IFMT 00170000
541 #define LINUX_S_IFSOCK 0140000
542 #define LINUX_S_IFLNK 0120000
543 #define LINUX_S_IFREG 0100000
544 #define LINUX_S_IFBLK 0060000
545 #define LINUX_S_IFDIR 0040000
546 #define LINUX_S_IFCHR 0020000
547 #define LINUX_S_IFIFO 0010000
548 #define LINUX_S_ISUID 0004000
549 #define LINUX_S_ISGID 0002000
550 #define LINUX_S_ISVTX 0001000
551
552 #define LINUX_S_IRWXU 00700
553 #define LINUX_S_IRUSR 00400
554 #define LINUX_S_IWUSR 00200
555 #define LINUX_S_IXUSR 00100
556
557 #define LINUX_S_IRWXG 00070
558 #define LINUX_S_IRGRP 00040
559 #define LINUX_S_IWGRP 00020
560 #define LINUX_S_IXGRP 00010
561
562 #define LINUX_S_IRWXO 00007
563 #define LINUX_S_IROTH 00004
564 #define LINUX_S_IWOTH 00002
565 #define LINUX_S_IXOTH 00001
566
567 #define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK)
568 #define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG)
569 #define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR)
570 #define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR)
571 #define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK)
572 #define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO)
573 #define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK)
574
575 /*
576 * ext2 size of an inode
577 */
578 #define EXT2_I_SIZE(i) ((i)->i_size | ((__u64) (i)->i_size_high << 32))
579
580 /*
581 * ext2_icount_t abstraction
582 */
583 #define EXT2_ICOUNT_OPT_INCREMENT 0x01
584 #define EXT2_ICOUNT_OPT_FULLMAP 0x02
585
586 typedef struct ext2_icount *ext2_icount_t;
587
588 /*
589 * Flags for ext2fs_bmap
590 */
591 #define BMAP_ALLOC 0x0001
592 #define BMAP_SET 0x0002
593 #define BMAP_UNINIT 0x0004
594 #define BMAP_ZERO 0x0008
595
596 /*
597 * Returned flags from ext2fs_bmap
598 */
599 #define BMAP_RET_UNINIT 0x0001
600
601 /*
602 * Flags for ext2fs_read_inode2
603 */
604 #define READ_INODE_NOCSUM 0x0001
605
606 /*
607 * Flags for ext2fs_write_inode2
608 */
609 #define WRITE_INODE_NOCSUM 0x0001
610
611 /*
612 * Flags for imager.c functions
613 */
614 #define IMAGER_FLAG_INODEMAP 1
615 #define IMAGER_FLAG_SPARSEWRITE 2
616
617 /*
618 * For checking structure magic numbers...
619 */
620
621 #define EXT2_CHECK_MAGIC(struct, code) \
622 if ((struct)->magic != (code)) return (code)
623
624 /*
625 * Features supported by this version of the library
626 */
627 #define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\
628 EXT2_FEATURE_COMPAT_IMAGIC_INODES|\
629 EXT3_FEATURE_COMPAT_HAS_JOURNAL|\
630 EXT2_FEATURE_COMPAT_RESIZE_INODE|\
631 EXT2_FEATURE_COMPAT_DIR_INDEX|\
632 EXT2_FEATURE_COMPAT_EXT_ATTR|\
633 EXT4_FEATURE_COMPAT_SPARSE_SUPER2|\
634 EXT4_FEATURE_COMPAT_FAST_COMMIT|\
635 EXT4_FEATURE_COMPAT_STABLE_INODES)
636
637 #ifdef CONFIG_MMP
638 #define EXT4_LIB_INCOMPAT_MMP EXT4_FEATURE_INCOMPAT_MMP
639 #else
640 #define EXT4_LIB_INCOMPAT_MMP (0)
641 #endif
642
643 #define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\
644 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\
645 EXT2_FEATURE_INCOMPAT_META_BG|\
646 EXT3_FEATURE_INCOMPAT_RECOVER|\
647 EXT3_FEATURE_INCOMPAT_EXTENTS|\
648 EXT4_FEATURE_INCOMPAT_FLEX_BG|\
649 EXT4_FEATURE_INCOMPAT_EA_INODE|\
650 EXT4_LIB_INCOMPAT_MMP|\
651 EXT4_FEATURE_INCOMPAT_64BIT|\
652 EXT4_FEATURE_INCOMPAT_INLINE_DATA|\
653 EXT4_FEATURE_INCOMPAT_ENCRYPT|\
654 EXT4_FEATURE_INCOMPAT_CASEFOLD|\
655 EXT4_FEATURE_INCOMPAT_CSUM_SEED|\
656 EXT4_FEATURE_INCOMPAT_LARGEDIR)
657
658 #define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\
659 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|\
660 EXT2_FEATURE_RO_COMPAT_LARGE_FILE|\
661 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|\
662 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|\
663 EXT4_FEATURE_RO_COMPAT_GDT_CSUM|\
664 EXT4_FEATURE_RO_COMPAT_BIGALLOC|\
665 EXT4_FEATURE_RO_COMPAT_QUOTA|\
666 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM|\
667 EXT4_FEATURE_RO_COMPAT_READONLY |\
668 EXT4_FEATURE_RO_COMPAT_PROJECT |\
669 EXT4_FEATURE_RO_COMPAT_SHARED_BLOCKS |\
670 EXT4_FEATURE_RO_COMPAT_VERITY)
671
672 /*
673 * These features are only allowed if EXT2_FLAG_SOFTSUPP_FEATURES is passed
674 * to ext2fs_openfs()
675 */
676 #define EXT2_LIB_SOFTSUPP_INCOMPAT (0)
677 #define EXT2_LIB_SOFTSUPP_RO_COMPAT (EXT4_FEATURE_RO_COMPAT_REPLICA)
678
679
680 /* Translate a block number to a cluster number */
681 #define EXT2FS_CLUSTER_RATIO(fs) (1 << (fs)->cluster_ratio_bits)
682 #define EXT2FS_CLUSTER_MASK(fs) (EXT2FS_CLUSTER_RATIO(fs) - 1)
683 #define EXT2FS_B2C(fs, blk) ((blk) >> (fs)->cluster_ratio_bits)
684 /* Translate a cluster number to a block number */
685 #define EXT2FS_C2B(fs, cluster) ((cluster) << (fs)->cluster_ratio_bits)
686 /* Translate # of blks to # of clusters */
687 #define EXT2FS_NUM_B2C(fs, blks) (((blks) + EXT2FS_CLUSTER_MASK(fs)) >> \
688 (fs)->cluster_ratio_bits)
689
690 #if defined(HAVE_FSTAT64) && !defined(__OSX_AVAILABLE_BUT_DEPRECATED)
691 typedef struct stat64 ext2fs_struct_stat;
692 #else
693 typedef struct stat ext2fs_struct_stat;
694 #endif
695
696 /*
697 * For ext2fs_close2() and ext2fs_flush2(), this flag allows you to
698 * avoid the fsync call.
699 */
700 #define EXT2_FLAG_FLUSH_NO_SYNC 1
701
702 /*
703 * Modify and iterate extended attributes
704 */
705 struct ext2_xattr_handle;
706 #define XATTR_ABORT 1
707 #define XATTR_CHANGED 2
708
709 /*
710 * flags for ext2fs_rw_bitmaps()
711 */
712 #define EXT2FS_BITMAPS_WRITE 0x0001
713 #define EXT2FS_BITMAPS_BLOCK 0x0002
714 #define EXT2FS_BITMAPS_INODE 0x0004
715 #define EXT2FS_BITMAPS_VALID_FLAGS 0x0007
716
717 /*
718 * function prototypes
719 */
ext2fs_has_group_desc_csum(ext2_filsys fs)720 static inline int ext2fs_has_group_desc_csum(ext2_filsys fs)
721 {
722 return ext2fs_has_feature_metadata_csum(fs->super) ||
723 ext2fs_has_feature_gdt_csum(fs->super);
724 }
725
726 /* The LARGE_FILE feature should be set if we have stored files 2GB+ in size */
ext2fs_needs_large_file_feature(unsigned long long file_size)727 static inline int ext2fs_needs_large_file_feature(unsigned long long file_size)
728 {
729 return file_size >= 0x80000000ULL;
730 }
731
732 /* alloc.c */
733 extern void ext2fs_clear_block_uninit(ext2_filsys fs, dgrp_t group);
734 extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode,
735 ext2fs_inode_bitmap map, ext2_ino_t *ret);
736 extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal,
737 ext2fs_block_bitmap map, blk_t *ret);
738 extern errcode_t ext2fs_new_block2(ext2_filsys fs, blk64_t goal,
739 ext2fs_block_bitmap map, blk64_t *ret);
740 extern errcode_t ext2fs_new_block3(ext2_filsys fs, blk64_t goal,
741 ext2fs_block_bitmap map, blk64_t *ret,
742 struct blk_alloc_ctx *ctx);
743 extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start,
744 blk_t finish, int num,
745 ext2fs_block_bitmap map,
746 blk_t *ret);
747 extern errcode_t ext2fs_get_free_blocks2(ext2_filsys fs, blk64_t start,
748 blk64_t finish, int num,
749 ext2fs_block_bitmap map,
750 blk64_t *ret);
751 extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal,
752 char *block_buf, blk_t *ret);
753 extern errcode_t ext2fs_alloc_block2(ext2_filsys fs, blk64_t goal,
754 char *block_buf, blk64_t *ret);
755 extern errcode_t ext2fs_alloc_block3(ext2_filsys fs, blk64_t goal,
756 char *block_buf, blk64_t *ret,
757 struct blk_alloc_ctx *ctx);
758
759 extern void ext2fs_set_alloc_block_callback(ext2_filsys fs,
760 errcode_t (*func)(ext2_filsys fs,
761 blk64_t goal,
762 blk64_t *ret),
763 errcode_t (**old)(ext2_filsys fs,
764 blk64_t goal,
765 blk64_t *ret));
766 blk64_t ext2fs_find_inode_goal(ext2_filsys fs, ext2_ino_t ino,
767 struct ext2_inode *inode, blk64_t lblk);
768 extern void ext2fs_set_new_range_callback(ext2_filsys fs,
769 errcode_t (*func)(ext2_filsys fs, int flags, blk64_t goal,
770 blk64_t len, blk64_t *pblk, blk64_t *plen),
771 errcode_t (**old)(ext2_filsys fs, int flags, blk64_t goal,
772 blk64_t len, blk64_t *pblk, blk64_t *plen));
773 extern void ext2fs_set_block_alloc_stats_range_callback(ext2_filsys fs,
774 void (*func)(ext2_filsys fs, blk64_t blk,
775 blk_t num, int inuse),
776 void (**old)(ext2_filsys fs, blk64_t blk,
777 blk_t num, int inuse));
778 #define EXT2_NEWRANGE_FIXED_GOAL (0x1)
779 #define EXT2_NEWRANGE_MIN_LENGTH (0x2)
780 #define EXT2_NEWRANGE_ALL_FLAGS (0x3)
781 errcode_t ext2fs_new_range(ext2_filsys fs, int flags, blk64_t goal,
782 blk64_t len, ext2fs_block_bitmap map, blk64_t *pblk,
783 blk64_t *plen);
784 #define EXT2_ALLOCRANGE_FIXED_GOAL (0x1)
785 #define EXT2_ALLOCRANGE_ZERO_BLOCKS (0x2)
786 #define EXT2_ALLOCRANGE_ALL_FLAGS (0x3)
787 errcode_t ext2fs_alloc_range(ext2_filsys fs, int flags, blk64_t goal,
788 blk_t len, blk64_t *ret);
789
790 /* alloc_sb.c */
791 extern int ext2fs_reserve_super_and_bgd(ext2_filsys fs,
792 dgrp_t group,
793 ext2fs_block_bitmap bmap);
794 extern void ext2fs_set_block_alloc_stats_callback(ext2_filsys fs,
795 void (*func)(ext2_filsys fs,
796 blk64_t blk,
797 int inuse),
798 void (**old)(ext2_filsys fs,
799 blk64_t blk,
800 int inuse));
801
802 /* alloc_stats.c */
803 void ext2fs_inode_alloc_stats(ext2_filsys fs, ext2_ino_t ino, int inuse);
804 void ext2fs_inode_alloc_stats2(ext2_filsys fs, ext2_ino_t ino,
805 int inuse, int isdir);
806 void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse);
807 void ext2fs_block_alloc_stats2(ext2_filsys fs, blk64_t blk, int inuse);
808 void ext2fs_block_alloc_stats_range(ext2_filsys fs, blk64_t blk,
809 blk_t num, int inuse);
810
811 /* alloc_tables.c */
812 extern errcode_t ext2fs_allocate_tables(ext2_filsys fs);
813 extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group,
814 ext2fs_block_bitmap bmap);
815
816 /* badblocks.c */
817 extern errcode_t ext2fs_u32_list_create(ext2_u32_list *ret, int size);
818 extern errcode_t ext2fs_u32_list_add(ext2_u32_list bb, __u32 blk);
819 extern int ext2fs_u32_list_find(ext2_u32_list bb, __u32 blk);
820 extern int ext2fs_u32_list_test(ext2_u32_list bb, blk_t blk);
821 extern errcode_t ext2fs_u32_list_iterate_begin(ext2_u32_list bb,
822 ext2_u32_iterate *ret);
823 extern int ext2fs_u32_list_iterate(ext2_u32_iterate iter, blk_t *blk);
824 extern void ext2fs_u32_list_iterate_end(ext2_u32_iterate iter);
825 extern errcode_t ext2fs_u32_copy(ext2_u32_list src, ext2_u32_list *dest);
826 extern int ext2fs_u32_list_equal(ext2_u32_list bb1, ext2_u32_list bb2);
827
828 extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret,
829 int size);
830 extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb,
831 blk_t blk);
832 extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb,
833 blk_t blk);
834 extern int ext2fs_u32_list_del(ext2_u32_list bb, __u32 blk);
835 extern void ext2fs_badblocks_list_del(ext2_u32_list bb, __u32 blk);
836 extern errcode_t
837 ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb,
838 ext2_badblocks_iterate *ret);
839 extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter,
840 blk_t *blk);
841 extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter);
842 extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src,
843 ext2_badblocks_list *dest);
844 extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1,
845 ext2_badblocks_list bb2);
846 extern int ext2fs_u32_list_count(ext2_u32_list bb);
847
848 /* bb_compat */
849 extern errcode_t badblocks_list_create(badblocks_list *ret, int size);
850 extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk);
851 extern int badblocks_list_test(badblocks_list bb, blk_t blk);
852 extern errcode_t badblocks_list_iterate_begin(badblocks_list bb,
853 badblocks_iterate *ret);
854 extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk);
855 extern void badblocks_list_iterate_end(badblocks_iterate iter);
856 extern void badblocks_list_free(badblocks_list bb);
857
858 /* bb_inode.c */
859 extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs,
860 ext2_badblocks_list bb_list);
861
862 /* bitmaps.c */
863 extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap);
864 extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap);
865 extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src,
866 ext2fs_generic_bitmap *dest);
867 extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs,
868 const char *descr,
869 ext2fs_block_bitmap *ret);
870 extern errcode_t ext2fs_allocate_subcluster_bitmap(ext2_filsys fs,
871 const char *descr,
872 ext2fs_block_bitmap *ret);
873 extern int ext2fs_get_bitmap_granularity(ext2fs_block_bitmap bitmap);
874 extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs,
875 const char *descr,
876 ext2fs_inode_bitmap *ret);
877 extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap,
878 ext2_ino_t end, ext2_ino_t *oend);
879 extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap,
880 blk_t end, blk_t *oend);
881 extern errcode_t ext2fs_fudge_block_bitmap_end2(ext2fs_block_bitmap bitmap,
882 blk64_t end, blk64_t *oend);
883 extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap);
884 extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap);
885 extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end,
886 ext2fs_inode_bitmap bmap);
887 extern errcode_t ext2fs_resize_inode_bitmap2(__u64 new_end,
888 __u64 new_real_end,
889 ext2fs_inode_bitmap bmap);
890 extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end,
891 ext2fs_block_bitmap bmap);
892 extern errcode_t ext2fs_resize_block_bitmap2(__u64 new_end,
893 __u64 new_real_end,
894 ext2fs_block_bitmap bmap);
895 extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1,
896 ext2fs_block_bitmap bm2);
897 extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1,
898 ext2fs_inode_bitmap bm2);
899 extern errcode_t ext2fs_set_inode_bitmap_range(ext2fs_inode_bitmap bmap,
900 ext2_ino_t start, unsigned int num,
901 void *in);
902 extern errcode_t ext2fs_set_inode_bitmap_range2(ext2fs_inode_bitmap bmap,
903 __u64 start, size_t num,
904 void *in);
905 extern errcode_t ext2fs_get_inode_bitmap_range(ext2fs_inode_bitmap bmap,
906 ext2_ino_t start, unsigned int num,
907 void *out);
908 extern errcode_t ext2fs_get_inode_bitmap_range2(ext2fs_inode_bitmap bmap,
909 __u64 start, size_t num,
910 void *out);
911 extern errcode_t ext2fs_set_block_bitmap_range(ext2fs_block_bitmap bmap,
912 blk_t start, unsigned int num,
913 void *in);
914 extern errcode_t ext2fs_set_block_bitmap_range2(ext2fs_block_bitmap bmap,
915 blk64_t start, size_t num,
916 void *in);
917 extern errcode_t ext2fs_get_block_bitmap_range(ext2fs_block_bitmap bmap,
918 blk_t start, unsigned int num,
919 void *out);
920 extern errcode_t ext2fs_get_block_bitmap_range2(ext2fs_block_bitmap bmap,
921 blk64_t start, size_t num,
922 void *out);
923
924 /* blknum.c */
925 extern __u32 ext2fs_inode_bitmap_checksum(ext2_filsys fs, dgrp_t group);
926 extern __u32 ext2fs_block_bitmap_checksum(ext2_filsys fs, dgrp_t group);
927 extern dgrp_t ext2fs_group_of_blk2(ext2_filsys fs, blk64_t);
928 extern blk64_t ext2fs_group_first_block2(ext2_filsys fs, dgrp_t group);
929 extern blk64_t ext2fs_group_last_block2(ext2_filsys fs, dgrp_t group);
930 extern int ext2fs_group_blocks_count(ext2_filsys fs, dgrp_t group);
931 extern blk64_t ext2fs_inode_data_blocks2(ext2_filsys fs,
932 struct ext2_inode *inode);
933 extern blk64_t ext2fs_inode_i_blocks(ext2_filsys fs,
934 struct ext2_inode *inode);
935 extern blk64_t ext2fs_get_stat_i_blocks(ext2_filsys fs,
936 struct ext2_inode *inode);
937 extern blk64_t ext2fs_blocks_count(struct ext2_super_block *super);
938 extern void ext2fs_blocks_count_set(struct ext2_super_block *super,
939 blk64_t blk);
940 extern void ext2fs_blocks_count_add(struct ext2_super_block *super,
941 blk64_t blk);
942 extern blk64_t ext2fs_r_blocks_count(struct ext2_super_block *super);
943 extern void ext2fs_r_blocks_count_set(struct ext2_super_block *super,
944 blk64_t blk);
945 extern void ext2fs_r_blocks_count_add(struct ext2_super_block *super,
946 blk64_t blk);
947 extern blk64_t ext2fs_free_blocks_count(struct ext2_super_block *super);
948 extern void ext2fs_free_blocks_count_set(struct ext2_super_block *super,
949 blk64_t blk);
950 extern void ext2fs_free_blocks_count_add(struct ext2_super_block *super,
951 blk64_t blk);
952 /* Block group descriptor accessor functions */
953 extern struct ext2_group_desc *ext2fs_group_desc(ext2_filsys fs,
954 struct opaque_ext2_group_desc *gdp,
955 dgrp_t group);
956 extern blk64_t ext2fs_block_bitmap_csum(ext2_filsys fs, dgrp_t group);
957 extern blk64_t ext2fs_block_bitmap_loc(ext2_filsys fs, dgrp_t group);
958 extern void ext2fs_block_bitmap_loc_set(ext2_filsys fs, dgrp_t group,
959 blk64_t blk);
960 extern __u32 ext2fs_inode_bitmap_csum(ext2_filsys fs, dgrp_t group);
961 extern blk64_t ext2fs_inode_bitmap_loc(ext2_filsys fs, dgrp_t group);
962 extern void ext2fs_inode_bitmap_loc_set(ext2_filsys fs, dgrp_t group,
963 blk64_t blk);
964 extern blk64_t ext2fs_inode_table_loc(ext2_filsys fs, dgrp_t group);
965 extern void ext2fs_inode_table_loc_set(ext2_filsys fs, dgrp_t group,
966 blk64_t blk);
967 extern __u32 ext2fs_bg_free_blocks_count(ext2_filsys fs, dgrp_t group);
968 extern void ext2fs_bg_free_blocks_count_set(ext2_filsys fs, dgrp_t group,
969 __u32 n);
970 extern __u32 ext2fs_bg_free_inodes_count(ext2_filsys fs, dgrp_t group);
971 extern void ext2fs_bg_free_inodes_count_set(ext2_filsys fs, dgrp_t group,
972 __u32 n);
973 extern __u32 ext2fs_bg_used_dirs_count(ext2_filsys fs, dgrp_t group);
974 extern void ext2fs_bg_used_dirs_count_set(ext2_filsys fs, dgrp_t group,
975 __u32 n);
976 extern __u32 ext2fs_bg_itable_unused(ext2_filsys fs, dgrp_t group);
977 extern void ext2fs_bg_itable_unused_set(ext2_filsys fs, dgrp_t group,
978 __u32 n);
979 extern __u16 ext2fs_bg_flags(ext2_filsys fs, dgrp_t group);
980 extern void ext2fs_bg_flags_zap(ext2_filsys fs, dgrp_t group);
981 extern int ext2fs_bg_flags_test(ext2_filsys fs, dgrp_t group, __u16 bg_flag);
982 extern void ext2fs_bg_flags_set(ext2_filsys fs, dgrp_t group, __u16 bg_flags);
983 extern void ext2fs_bg_flags_clear(ext2_filsys fs, dgrp_t group, __u16 bg_flags);
984 extern __u16 ext2fs_bg_checksum(ext2_filsys fs, dgrp_t group);
985 extern void ext2fs_bg_checksum_set(ext2_filsys fs, dgrp_t group, __u16 checksum);
986 extern blk64_t ext2fs_file_acl_block(ext2_filsys fs,
987 const struct ext2_inode *inode);
988 extern void ext2fs_file_acl_block_set(ext2_filsys fs,
989 struct ext2_inode *inode, blk64_t blk);
990 extern errcode_t ext2fs_inode_size_set(ext2_filsys fs, struct ext2_inode *inode,
991 ext2_off64_t size);
992
993 /* block.c */
994 extern errcode_t ext2fs_block_iterate(ext2_filsys fs,
995 ext2_ino_t ino,
996 int flags,
997 char *block_buf,
998 int (*func)(ext2_filsys fs,
999 blk_t *blocknr,
1000 int blockcnt,
1001 void *priv_data),
1002 void *priv_data);
1003 errcode_t ext2fs_block_iterate2(ext2_filsys fs,
1004 ext2_ino_t ino,
1005 int flags,
1006 char *block_buf,
1007 int (*func)(ext2_filsys fs,
1008 blk_t *blocknr,
1009 e2_blkcnt_t blockcnt,
1010 blk_t ref_blk,
1011 int ref_offset,
1012 void *priv_data),
1013 void *priv_data);
1014 errcode_t ext2fs_block_iterate3(ext2_filsys fs,
1015 ext2_ino_t ino,
1016 int flags,
1017 char *block_buf,
1018 int (*func)(ext2_filsys fs,
1019 blk64_t *blocknr,
1020 e2_blkcnt_t blockcnt,
1021 blk64_t ref_blk,
1022 int ref_offset,
1023 void *priv_data),
1024 void *priv_data);
1025
1026 /* bmap.c */
1027 extern errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino,
1028 struct ext2_inode *inode,
1029 char *block_buf, int bmap_flags,
1030 blk_t block, blk_t *phys_blk);
1031 extern errcode_t ext2fs_bmap2(ext2_filsys fs, ext2_ino_t ino,
1032 struct ext2_inode *inode,
1033 char *block_buf, int bmap_flags, blk64_t block,
1034 int *ret_flags, blk64_t *phys_blk);
1035 errcode_t ext2fs_map_cluster_block(ext2_filsys fs, ext2_ino_t ino,
1036 struct ext2_inode *inode, blk64_t lblk,
1037 blk64_t *pblk);
1038
1039 #if 0
1040 /* bmove.c */
1041 extern errcode_t ext2fs_move_blocks(ext2_filsys fs,
1042 ext2fs_block_bitmap reserve,
1043 ext2fs_block_bitmap alloc_map,
1044 int flags);
1045 #endif
1046
1047 /* check_desc.c */
1048 extern errcode_t ext2fs_check_desc(ext2_filsys fs);
1049
1050 /* closefs.c */
1051 extern errcode_t ext2fs_close(ext2_filsys fs);
1052 extern errcode_t ext2fs_close2(ext2_filsys fs, int flags);
1053 extern errcode_t ext2fs_close_free(ext2_filsys *fs);
1054 extern errcode_t ext2fs_flush(ext2_filsys fs);
1055 extern errcode_t ext2fs_flush2(ext2_filsys fs, int flags);
1056 extern int ext2fs_bg_has_super(ext2_filsys fs, dgrp_t group_block);
1057 extern errcode_t ext2fs_super_and_bgd_loc2(ext2_filsys fs,
1058 dgrp_t group,
1059 blk64_t *ret_super_blk,
1060 blk64_t *ret_old_desc_blk,
1061 blk64_t *ret_new_desc_blk,
1062 blk_t *ret_used_blks);
1063 extern int ext2fs_super_and_bgd_loc(ext2_filsys fs,
1064 dgrp_t group,
1065 blk_t *ret_super_blk,
1066 blk_t *ret_old_desc_blk,
1067 blk_t *ret_new_desc_blk,
1068 int *ret_meta_bg);
1069 extern void ext2fs_update_dynamic_rev(ext2_filsys fs);
1070
1071 /* crc32c.c */
1072 extern __u32 ext2fs_crc32_be(__u32 crc, unsigned char const *p, size_t len);
1073 extern __u32 ext2fs_crc32c_le(__u32 crc, unsigned char const *p, size_t len);
1074
1075 /* csum.c */
1076 extern void ext2fs_init_csum_seed(ext2_filsys fs);
1077 extern errcode_t ext2fs_mmp_csum_set(ext2_filsys fs, struct mmp_struct *mmp);
1078 extern int ext2fs_mmp_csum_verify(ext2_filsys, struct mmp_struct *mmp);
1079 extern int ext2fs_verify_csum_type(ext2_filsys fs, struct ext2_super_block *sb);
1080 extern errcode_t ext2fs_superblock_csum_set(ext2_filsys fs,
1081 struct ext2_super_block *sb);
1082 extern int ext2fs_superblock_csum_verify(ext2_filsys fs,
1083 struct ext2_super_block *sb);
1084 extern errcode_t ext2fs_ext_attr_block_csum_set(ext2_filsys fs,
1085 ext2_ino_t inum, blk64_t block,
1086 struct ext2_ext_attr_header *hdr);
1087 extern int ext2fs_ext_attr_block_csum_verify(ext2_filsys fs, ext2_ino_t inum,
1088 blk64_t block,
1089 struct ext2_ext_attr_header *hdr);
1090 #define EXT2_DIRENT_TAIL(block, blocksize) \
1091 ((struct ext2_dir_entry_tail *)(((char *)(block)) + \
1092 (blocksize) - sizeof(struct ext2_dir_entry_tail)))
1093
1094 extern void ext2fs_initialize_dirent_tail(ext2_filsys fs,
1095 struct ext2_dir_entry_tail *t);
1096 extern int ext2fs_dirent_has_tail(ext2_filsys fs,
1097 struct ext2_dir_entry *dirent);
1098 extern int ext2fs_dirent_csum_verify(ext2_filsys fs, ext2_ino_t inum,
1099 struct ext2_dir_entry *dirent);
1100 extern int ext2fs_dir_block_csum_verify(ext2_filsys fs, ext2_ino_t inum,
1101 struct ext2_dir_entry *dirent);
1102 extern errcode_t ext2fs_dir_block_csum_set(ext2_filsys fs, ext2_ino_t inum,
1103 struct ext2_dir_entry *dirent);
1104 extern errcode_t ext2fs_get_dx_countlimit(ext2_filsys fs,
1105 struct ext2_dir_entry *dirent,
1106 struct ext2_dx_countlimit **cc,
1107 int *offset);
1108 extern errcode_t ext2fs_dx_csum(ext2_filsys fs, ext2_ino_t inum,
1109 struct ext2_dir_entry *dirent,
1110 __u32 *crc, struct ext2_dx_tail **ret_t);
1111 extern errcode_t ext2fs_extent_block_csum_set(ext2_filsys fs,
1112 ext2_ino_t inum,
1113 struct ext3_extent_header *eh);
1114 extern int ext2fs_extent_block_csum_verify(ext2_filsys fs,
1115 ext2_ino_t inum,
1116 struct ext3_extent_header *eh);
1117 extern errcode_t ext2fs_block_bitmap_csum_set(ext2_filsys fs, dgrp_t group,
1118 char *bitmap, int size);
1119 extern int ext2fs_block_bitmap_csum_verify(ext2_filsys fs, dgrp_t group,
1120 char *bitmap, int size);
1121 extern errcode_t ext2fs_inode_bitmap_csum_set(ext2_filsys fs, dgrp_t group,
1122 char *bitmap, int size);
1123 extern int ext2fs_inode_bitmap_csum_verify(ext2_filsys fs, dgrp_t group,
1124 char *bitmap, int size);
1125 extern errcode_t ext2fs_inode_csum_set(ext2_filsys fs, ext2_ino_t inum,
1126 struct ext2_inode_large *inode);
1127 extern int ext2fs_inode_csum_verify(ext2_filsys fs, ext2_ino_t inum,
1128 struct ext2_inode_large *inode);
1129 extern void ext2fs_group_desc_csum_set(ext2_filsys fs, dgrp_t group);
1130 extern int ext2fs_group_desc_csum_verify(ext2_filsys fs, dgrp_t group);
1131 extern errcode_t ext2fs_set_gdt_csum(ext2_filsys fs);
1132 extern __u16 ext2fs_group_desc_csum(ext2_filsys fs, dgrp_t group);
1133
1134 /* dblist.c */
1135 extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist);
1136 extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ext2_ino_t ino,
1137 blk_t blk, int blockcnt);
1138 extern errcode_t ext2fs_add_dir_block2(ext2_dblist dblist, ext2_ino_t ino,
1139 blk64_t blk, e2_blkcnt_t blockcnt);
1140 extern void ext2fs_dblist_sort(ext2_dblist dblist,
1141 EXT2_QSORT_TYPE (*sortfunc)(const void *,
1142 const void *));
1143 extern void ext2fs_dblist_sort2(ext2_dblist dblist,
1144 EXT2_QSORT_TYPE (*sortfunc)(const void *,
1145 const void *));
1146 extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist,
1147 int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info,
1148 void *priv_data),
1149 void *priv_data);
1150 extern errcode_t ext2fs_dblist_iterate2(ext2_dblist dblist,
1151 int (*func)(ext2_filsys fs, struct ext2_db_entry2 *db_info,
1152 void *priv_data),
1153 void *priv_data);
1154 extern errcode_t ext2fs_dblist_iterate3(ext2_dblist dblist,
1155 int (*func)(ext2_filsys fs, struct ext2_db_entry2 *db_info,
1156 void *priv_data),
1157 unsigned long long start,
1158 unsigned long long count,
1159 void *priv_data);
1160 extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ext2_ino_t ino,
1161 blk_t blk, int blockcnt);
1162 extern errcode_t ext2fs_set_dir_block2(ext2_dblist dblist, ext2_ino_t ino,
1163 blk64_t blk, e2_blkcnt_t blockcnt);
1164 extern errcode_t ext2fs_copy_dblist(ext2_dblist src,
1165 ext2_dblist *dest);
1166 extern int ext2fs_dblist_count(ext2_dblist dblist);
1167 extern blk64_t ext2fs_dblist_count2(ext2_dblist dblist);
1168 extern errcode_t ext2fs_dblist_get_last(ext2_dblist dblist,
1169 struct ext2_db_entry **entry);
1170 extern errcode_t ext2fs_dblist_get_last2(ext2_dblist dblist,
1171 struct ext2_db_entry2 **entry);
1172 extern errcode_t ext2fs_dblist_drop_last(ext2_dblist dblist);
1173
1174 /* dblist_dir.c */
1175 extern errcode_t
1176 ext2fs_dblist_dir_iterate(ext2_dblist dblist,
1177 int flags,
1178 char *block_buf,
1179 int (*func)(ext2_ino_t dir,
1180 int entry,
1181 struct ext2_dir_entry *dirent,
1182 int offset,
1183 int blocksize,
1184 char *buf,
1185 void *priv_data),
1186 void *priv_data);
1187
1188 #if 0
1189 /* digest_encode.c */
1190 #define EXT2FS_DIGEST_SIZE EXT2FS_SHA256_LENGTH
1191 extern int ext2fs_digest_encode(const char *src, int len, char *dst);
1192 extern int ext2fs_digest_decode(const char *src, int len, char *dst);
1193 #endif
1194
1195 /* dirblock.c */
1196 extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block,
1197 void *buf);
1198 extern errcode_t ext2fs_read_dir_block2(ext2_filsys fs, blk_t block,
1199 void *buf, int flags);
1200 extern errcode_t ext2fs_read_dir_block3(ext2_filsys fs, blk64_t block,
1201 void *buf, int flags);
1202 extern errcode_t ext2fs_read_dir_block4(ext2_filsys fs, blk64_t block,
1203 void *buf, int flags, ext2_ino_t ino);
1204 extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block,
1205 void *buf);
1206 extern errcode_t ext2fs_write_dir_block2(ext2_filsys fs, blk_t block,
1207 void *buf, int flags);
1208 extern errcode_t ext2fs_write_dir_block3(ext2_filsys fs, blk64_t block,
1209 void *buf, int flags);
1210 extern errcode_t ext2fs_write_dir_block4(ext2_filsys fs, blk64_t block,
1211 void *buf, int flags, ext2_ino_t ino);
1212
1213 /* dirhash.c */
1214 extern errcode_t ext2fs_dirhash(int version, const char *name, int len,
1215 const __u32 *seed,
1216 ext2_dirhash_t *ret_hash,
1217 ext2_dirhash_t *ret_minor_hash);
1218
1219 extern errcode_t ext2fs_dirhash2(int version, const char *name, int len,
1220 const struct ext2fs_nls_table *charset,
1221 int hash_flags,
1222 const __u32 *seed,
1223 ext2_dirhash_t *ret_hash,
1224 ext2_dirhash_t *ret_minor_hash);
1225
1226 /* dir_iterate.c */
1227 extern errcode_t ext2fs_get_rec_len(ext2_filsys fs,
1228 struct ext2_dir_entry *dirent,
1229 unsigned int *rec_len);
1230 extern errcode_t ext2fs_set_rec_len(ext2_filsys fs,
1231 unsigned int len,
1232 struct ext2_dir_entry *dirent);
1233 extern errcode_t ext2fs_dir_iterate(ext2_filsys fs,
1234 ext2_ino_t dir,
1235 int flags,
1236 char *block_buf,
1237 int (*func)(struct ext2_dir_entry *dirent,
1238 int offset,
1239 int blocksize,
1240 char *buf,
1241 void *priv_data),
1242 void *priv_data);
1243 extern errcode_t ext2fs_dir_iterate2(ext2_filsys fs,
1244 ext2_ino_t dir,
1245 int flags,
1246 char *block_buf,
1247 int (*func)(ext2_ino_t dir,
1248 int entry,
1249 struct ext2_dir_entry *dirent,
1250 int offset,
1251 int blocksize,
1252 char *buf,
1253 void *priv_data),
1254 void *priv_data);
1255
1256 /* dupfs.c */
1257 extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest);
1258
1259 /* expanddir.c */
1260 extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir);
1261
1262 /* ext_attr.c */
1263 extern __u32 ext2fs_ext_attr_hash_entry(struct ext2_ext_attr_entry *entry,
1264 void *data);
1265 extern errcode_t ext2fs_ext_attr_hash_entry2(ext2_filsys fs,
1266 struct ext2_ext_attr_entry *entry,
1267 void *data, __u32 *hash);
1268 extern errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf);
1269 extern errcode_t ext2fs_read_ext_attr2(ext2_filsys fs, blk64_t block,
1270 void *buf);
1271 extern errcode_t ext2fs_read_ext_attr3(ext2_filsys fs, blk64_t block,
1272 void *buf, ext2_ino_t inum);
1273 extern errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block,
1274 void *buf);
1275 extern errcode_t ext2fs_write_ext_attr2(ext2_filsys fs, blk64_t block,
1276 void *buf);
1277 extern errcode_t ext2fs_write_ext_attr3(ext2_filsys fs, blk64_t block,
1278 void *buf, ext2_ino_t inum);
1279 extern errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk,
1280 char *block_buf,
1281 int adjust, __u32 *newcount);
1282 extern errcode_t ext2fs_adjust_ea_refcount2(ext2_filsys fs, blk64_t blk,
1283 char *block_buf,
1284 int adjust, __u32 *newcount);
1285 extern errcode_t ext2fs_adjust_ea_refcount3(ext2_filsys fs, blk64_t blk,
1286 char *block_buf,
1287 int adjust, __u32 *newcount,
1288 ext2_ino_t inum);
1289 errcode_t ext2fs_xattrs_write(struct ext2_xattr_handle *handle);
1290 errcode_t ext2fs_xattrs_read(struct ext2_xattr_handle *handle);
1291 errcode_t ext2fs_xattrs_iterate(struct ext2_xattr_handle *h,
1292 int (*func)(char *name, char *value,
1293 size_t value_len, void *data),
1294 void *data);
1295 errcode_t ext2fs_xattr_get(struct ext2_xattr_handle *h, const char *key,
1296 void **value, size_t *value_len);
1297 errcode_t ext2fs_xattr_set(struct ext2_xattr_handle *handle,
1298 const char *key,
1299 const void *value,
1300 size_t value_len);
1301 errcode_t ext2fs_xattr_remove(struct ext2_xattr_handle *handle,
1302 const char *key);
1303 errcode_t ext2fs_xattrs_open(ext2_filsys fs, ext2_ino_t ino,
1304 struct ext2_xattr_handle **handle);
1305 errcode_t ext2fs_xattrs_close(struct ext2_xattr_handle **handle);
1306 errcode_t ext2fs_free_ext_attr(ext2_filsys fs, ext2_ino_t ino,
1307 struct ext2_inode_large *inode);
1308 errcode_t ext2fs_xattrs_count(struct ext2_xattr_handle *handle, size_t *count);
1309 errcode_t ext2fs_xattr_inode_max_size(ext2_filsys fs, ext2_ino_t ino,
1310 size_t *size);
1311 #define XATTR_HANDLE_FLAG_RAW 0x0001
1312 errcode_t ext2fs_xattrs_flags(struct ext2_xattr_handle *handle,
1313 unsigned int *new_flags, unsigned int *old_flags);
1314 extern void ext2fs_ext_attr_block_rehash(struct ext2_ext_attr_header *header,
1315 struct ext2_ext_attr_entry *end);
1316 extern __u32 ext2fs_get_ea_inode_hash(struct ext2_inode *inode);
1317 extern void ext2fs_set_ea_inode_hash(struct ext2_inode *inode, __u32 hash);
1318 extern __u64 ext2fs_get_ea_inode_ref(struct ext2_inode *inode);
1319 extern void ext2fs_set_ea_inode_ref(struct ext2_inode *inode, __u64 ref_count);
1320
1321 /* extent.c */
1322 extern errcode_t ext2fs_extent_header_verify(void *ptr, int size);
1323 extern errcode_t ext2fs_extent_open(ext2_filsys fs, ext2_ino_t ino,
1324 ext2_extent_handle_t *handle);
1325 extern errcode_t ext2fs_extent_open2(ext2_filsys fs, ext2_ino_t ino,
1326 struct ext2_inode *inode,
1327 ext2_extent_handle_t *ret_handle);
1328 extern void ext2fs_extent_free(ext2_extent_handle_t handle);
1329 extern errcode_t ext2fs_extent_get(ext2_extent_handle_t handle,
1330 int flags, struct ext2fs_extent *extent);
1331 extern errcode_t ext2fs_extent_node_split(ext2_extent_handle_t handle);
1332 extern errcode_t ext2fs_extent_replace(ext2_extent_handle_t handle, int flags,
1333 struct ext2fs_extent *extent);
1334 extern errcode_t ext2fs_extent_insert(ext2_extent_handle_t handle, int flags,
1335 struct ext2fs_extent *extent);
1336 extern errcode_t ext2fs_extent_set_bmap(ext2_extent_handle_t handle,
1337 blk64_t logical, blk64_t physical,
1338 int flags);
1339 extern errcode_t ext2fs_extent_delete(ext2_extent_handle_t handle, int flags);
1340 extern errcode_t ext2fs_extent_get_info(ext2_extent_handle_t handle,
1341 struct ext2_extent_info *info);
1342 extern errcode_t ext2fs_extent_goto(ext2_extent_handle_t handle,
1343 blk64_t blk);
1344 extern errcode_t ext2fs_extent_goto2(ext2_extent_handle_t handle,
1345 int leaf_level, blk64_t blk);
1346 extern errcode_t ext2fs_extent_fix_parents(ext2_extent_handle_t handle);
1347 extern size_t ext2fs_max_extent_depth(ext2_extent_handle_t handle);
1348 extern errcode_t ext2fs_fix_extents_checksums(ext2_filsys fs, ext2_ino_t ino,
1349 struct ext2_inode *inode);
1350 extern errcode_t ext2fs_count_blocks(ext2_filsys fs, ext2_ino_t ino,
1351 struct ext2_inode *inode, blk64_t *ret_count);
1352 extern errcode_t ext2fs_decode_extent(struct ext2fs_extent *to, void *from,
1353 int len);
1354
1355 /* fallocate.c */
1356 #define EXT2_FALLOCATE_ZERO_BLOCKS (0x1)
1357 #define EXT2_FALLOCATE_FORCE_INIT (0x2)
1358 #define EXT2_FALLOCATE_FORCE_UNINIT (0x4)
1359 #define EXT2_FALLOCATE_INIT_BEYOND_EOF (0x8)
1360 #define EXT2_FALLOCATE_ALL_FLAGS (0xF)
1361 errcode_t ext2fs_fallocate(ext2_filsys fs, int flags, ext2_ino_t ino,
1362 struct ext2_inode *inode, blk64_t goal,
1363 blk64_t start, blk64_t len);
1364
1365 /* fileio.c */
1366 extern errcode_t ext2fs_file_open2(ext2_filsys fs, ext2_ino_t ino,
1367 struct ext2_inode *inode,
1368 int flags, ext2_file_t *ret);
1369 extern errcode_t ext2fs_file_open(ext2_filsys fs, ext2_ino_t ino,
1370 int flags, ext2_file_t *ret);
1371 extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file);
1372 struct ext2_inode *ext2fs_file_get_inode(ext2_file_t file);
1373 extern ext2_ino_t ext2fs_file_get_inode_num(ext2_file_t file);
1374 extern errcode_t ext2fs_file_close(ext2_file_t file);
1375 extern errcode_t ext2fs_file_flush(ext2_file_t file);
1376 extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf,
1377 unsigned int wanted, unsigned int *got);
1378 extern errcode_t ext2fs_file_write(ext2_file_t file, const void *buf,
1379 unsigned int nbytes, unsigned int *written);
1380 extern errcode_t ext2fs_file_llseek(ext2_file_t file, __u64 offset,
1381 int whence, __u64 *ret_pos);
1382 extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset,
1383 int whence, ext2_off_t *ret_pos);
1384 errcode_t ext2fs_file_get_lsize(ext2_file_t file, __u64 *ret_size);
1385 extern ext2_off_t ext2fs_file_get_size(ext2_file_t file);
1386 extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size);
1387 extern errcode_t ext2fs_file_set_size2(ext2_file_t file, ext2_off64_t size);
1388
1389 /* finddev.c */
1390 extern char *ext2fs_find_block_device(dev_t device);
1391
1392 /* flushb.c */
1393 extern errcode_t ext2fs_sync_device(int fd, int flushb);
1394
1395 /* freefs.c */
1396 extern void ext2fs_free(ext2_filsys fs);
1397 extern void ext2fs_free_dblist(ext2_dblist dblist);
1398 extern void ext2fs_badblocks_list_free(ext2_badblocks_list bb);
1399 extern void ext2fs_u32_list_free(ext2_u32_list bb);
1400
1401 /* gen_bitmap.c */
1402 extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap);
1403 extern errcode_t ext2fs_make_generic_bitmap(errcode_t magic, ext2_filsys fs,
1404 __u32 start, __u32 end,
1405 __u32 real_end,
1406 const char *descr, char *init_map,
1407 ext2fs_generic_bitmap *ret);
1408 extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start,
1409 __u32 end,
1410 __u32 real_end,
1411 const char *descr,
1412 ext2fs_generic_bitmap *ret);
1413 extern errcode_t ext2fs_copy_generic_bitmap(ext2fs_generic_bitmap src,
1414 ext2fs_generic_bitmap *dest);
1415 extern void ext2fs_clear_generic_bitmap(ext2fs_generic_bitmap bitmap);
1416 extern errcode_t ext2fs_fudge_generic_bitmap_end(ext2fs_inode_bitmap bitmap,
1417 errcode_t magic,
1418 errcode_t neq,
1419 ext2_ino_t end,
1420 ext2_ino_t *oend);
1421 extern void ext2fs_set_generic_bitmap_padding(ext2fs_generic_bitmap map);
1422 extern errcode_t ext2fs_resize_generic_bitmap(errcode_t magic,
1423 __u32 new_end,
1424 __u32 new_real_end,
1425 ext2fs_generic_bitmap bmap);
1426 extern errcode_t ext2fs_compare_generic_bitmap(errcode_t magic, errcode_t neq,
1427 ext2fs_generic_bitmap bm1,
1428 ext2fs_generic_bitmap bm2);
1429 extern errcode_t ext2fs_get_generic_bitmap_range(ext2fs_generic_bitmap bmap,
1430 errcode_t magic,
1431 __u32 start, __u32 num,
1432 void *out);
1433 extern errcode_t ext2fs_set_generic_bitmap_range(ext2fs_generic_bitmap bmap,
1434 errcode_t magic,
1435 __u32 start, __u32 num,
1436 void *in);
1437 extern errcode_t ext2fs_find_first_zero_generic_bitmap(ext2fs_generic_bitmap bitmap,
1438 __u32 start, __u32 end,
1439 __u32 *out);
1440 extern errcode_t ext2fs_find_first_set_generic_bitmap(ext2fs_generic_bitmap bitmap,
1441 __u32 start, __u32 end,
1442 __u32 *out);
1443
1444 /* gen_bitmap64.c */
1445 void ext2fs_free_generic_bmap(ext2fs_generic_bitmap bmap);
1446 errcode_t ext2fs_alloc_generic_bmap(ext2_filsys fs, errcode_t magic,
1447 int type, __u64 start, __u64 end,
1448 __u64 real_end,
1449 const char *descr,
1450 ext2fs_generic_bitmap *ret);
1451 errcode_t ext2fs_copy_generic_bmap(ext2fs_generic_bitmap src,
1452 ext2fs_generic_bitmap *dest);
1453 void ext2fs_clear_generic_bmap(ext2fs_generic_bitmap bitmap);
1454 errcode_t ext2fs_fudge_generic_bmap_end(ext2fs_generic_bitmap bitmap,
1455 errcode_t neq,
1456 __u64 end, __u64 *oend);
1457 void ext2fs_set_generic_bmap_padding(ext2fs_generic_bitmap bmap);
1458 errcode_t ext2fs_resize_generic_bmap(ext2fs_generic_bitmap bmap,
1459 __u64 new_end,
1460 __u64 new_real_end);
1461 errcode_t ext2fs_compare_generic_bmap(errcode_t neq,
1462 ext2fs_generic_bitmap bm1,
1463 ext2fs_generic_bitmap bm2);
1464 errcode_t ext2fs_get_generic_bmap_range(ext2fs_generic_bitmap bmap,
1465 __u64 start, unsigned int num,
1466 void *out);
1467 errcode_t ext2fs_set_generic_bmap_range(ext2fs_generic_bitmap bmap,
1468 __u64 start, unsigned int num,
1469 void *in);
1470 errcode_t ext2fs_convert_subcluster_bitmap(ext2_filsys fs,
1471 ext2fs_block_bitmap *bitmap);
1472 errcode_t ext2fs_count_used_clusters(ext2_filsys fs, blk64_t start,
1473 blk64_t end, blk64_t *out);
1474
1475 /* get_num_dirs.c */
1476 extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs);
1477
1478 /* getsize.c */
1479 extern errcode_t ext2fs_get_device_size(const char *file, int blocksize,
1480 blk_t *retblocks);
1481 extern errcode_t ext2fs_get_device_size2(const char *file, int blocksize,
1482 blk64_t *retblocks);
1483
1484 /* getsectsize.c */
1485 extern int ext2fs_get_dio_alignment(int fd);
1486 errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize);
1487 errcode_t ext2fs_get_device_phys_sectsize(const char *file, int *sectsize);
1488
1489 /* i_block.c */
1490 errcode_t ext2fs_iblk_add_blocks(ext2_filsys fs, struct ext2_inode *inode,
1491 blk64_t num_blocks);
1492 errcode_t ext2fs_iblk_sub_blocks(ext2_filsys fs, struct ext2_inode *inode,
1493 blk64_t num_blocks);
1494 errcode_t ext2fs_iblk_set(ext2_filsys fs, struct ext2_inode *inode, blk64_t b);
1495
1496 /* imager.c */
1497 extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags);
1498 extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags);
1499 extern errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd, int flags);
1500 extern errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd, int flags);
1501 extern errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags);
1502 extern errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags);
1503
1504 /* ind_block.c */
1505 errcode_t ext2fs_read_ind_block(ext2_filsys fs, blk_t blk, void *buf);
1506 errcode_t ext2fs_write_ind_block(ext2_filsys fs, blk_t blk, void *buf);
1507
1508 /* initialize.c */
1509 extern errcode_t ext2fs_initialize(const char *name, int flags,
1510 struct ext2_super_block *param,
1511 io_manager manager, ext2_filsys *ret_fs);
1512 extern errcode_t ext2fs_calculate_summary_stats(ext2_filsys fs, int super_only);
1513
1514 /* icount.c */
1515 extern void ext2fs_free_icount(ext2_icount_t icount);
1516 extern errcode_t ext2fs_create_icount_tdb(ext2_filsys fs, char *tdb_dir,
1517 int flags, ext2_icount_t *ret);
1518 extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags,
1519 unsigned int size,
1520 ext2_icount_t hint, ext2_icount_t *ret);
1521 extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags,
1522 unsigned int size,
1523 ext2_icount_t *ret);
1524 extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ext2_ino_t ino,
1525 __u16 *ret);
1526 extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ext2_ino_t ino,
1527 __u16 *ret);
1528 extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ext2_ino_t ino,
1529 __u16 *ret);
1530 extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ext2_ino_t ino,
1531 __u16 count);
1532 extern ext2_ino_t ext2fs_get_icount_size(ext2_icount_t icount);
1533 errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *);
1534
1535 /* inline.c */
1536
1537 extern errcode_t ext2fs_get_memalign(unsigned long size,
1538 unsigned long align, void *ptr);
1539
1540 /* inline_data.c */
1541 extern errcode_t ext2fs_inline_data_init(ext2_filsys fs, ext2_ino_t ino);
1542 extern errcode_t ext2fs_inline_data_size(ext2_filsys fs, ext2_ino_t ino,
1543 size_t *size);
1544 extern errcode_t ext2fs_inline_data_get(ext2_filsys fs, ext2_ino_t ino,
1545 struct ext2_inode *inode,
1546 void *buf, size_t *size);
1547 extern errcode_t ext2fs_inline_data_set(ext2_filsys fs, ext2_ino_t ino,
1548 struct ext2_inode *inode,
1549 void *buf, size_t size);
1550
1551 /* inode.c */
1552 extern errcode_t ext2fs_create_inode_cache(ext2_filsys fs,
1553 unsigned int cache_size);
1554 extern void ext2fs_free_inode_cache(struct ext2_inode_cache *icache);
1555 extern errcode_t ext2fs_flush_icache(ext2_filsys fs);
1556 extern errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan,
1557 ext2_ino_t *ino,
1558 struct ext2_inode *inode,
1559 int bufsize);
1560 #define EXT2_INODE_SCAN_DEFAULT_BUFFER_BLOCKS 8
1561 extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks,
1562 ext2_inode_scan *ret_scan);
1563 extern void ext2fs_close_inode_scan(ext2_inode_scan scan);
1564 extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino,
1565 struct ext2_inode *inode);
1566 extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan,
1567 int group);
1568 extern void ext2fs_set_inode_callback
1569 (ext2_inode_scan scan,
1570 errcode_t (*done_group)(ext2_filsys fs,
1571 ext2_inode_scan scan,
1572 dgrp_t group,
1573 void * priv_data),
1574 void *done_group_data);
1575 extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags,
1576 int clear_flags);
1577 extern errcode_t ext2fs_read_inode_full(ext2_filsys fs, ext2_ino_t ino,
1578 struct ext2_inode * inode,
1579 int bufsize);
1580 extern errcode_t ext2fs_read_inode(ext2_filsys fs, ext2_ino_t ino,
1581 struct ext2_inode * inode);
1582 extern errcode_t ext2fs_read_inode2(ext2_filsys fs, ext2_ino_t ino,
1583 struct ext2_inode * inode,
1584 int bufsize, int flags);
1585 extern errcode_t ext2fs_write_inode_full(ext2_filsys fs, ext2_ino_t ino,
1586 struct ext2_inode * inode,
1587 int bufsize);
1588 extern errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino,
1589 struct ext2_inode * inode);
1590 extern errcode_t ext2fs_write_inode2(ext2_filsys fs, ext2_ino_t ino,
1591 struct ext2_inode * inode,
1592 int bufsize, int flags);
1593 extern errcode_t ext2fs_write_new_inode(ext2_filsys fs, ext2_ino_t ino,
1594 struct ext2_inode * inode);
1595 extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks);
1596 extern errcode_t ext2fs_check_directory(ext2_filsys fs, ext2_ino_t ino);
1597
1598 /* inode_io.c */
1599 extern io_manager inode_io_manager;
1600 extern errcode_t ext2fs_inode_io_intern(ext2_filsys fs, ext2_ino_t ino,
1601 char **name);
1602 extern errcode_t ext2fs_inode_io_intern2(ext2_filsys fs, ext2_ino_t ino,
1603 struct ext2_inode *inode,
1604 char **name);
1605
1606 /* ismounted.c */
1607 extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags);
1608 extern errcode_t ext2fs_check_mount_point(const char *device, int *mount_flags,
1609 char *mtpt, int mtlen);
1610
1611 /* punch.c */
1612 /*
1613 * NOTE: This function removes from an inode the blocks "start", "end", and
1614 * every block in between.
1615 */
1616 extern errcode_t ext2fs_punch(ext2_filsys fs, ext2_ino_t ino,
1617 struct ext2_inode *inode,
1618 char *block_buf, blk64_t start,
1619 blk64_t end);
1620
1621 /* namei.c */
1622 extern errcode_t ext2fs_lookup(ext2_filsys fs, ext2_ino_t dir, const char *name,
1623 int namelen, char *buf, ext2_ino_t *inode);
1624 extern errcode_t ext2fs_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
1625 const char *name, ext2_ino_t *inode);
1626 errcode_t ext2fs_namei_follow(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
1627 const char *name, ext2_ino_t *inode);
1628 extern errcode_t ext2fs_follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
1629 ext2_ino_t inode, ext2_ino_t *res_inode);
1630
1631 /* native.c */
1632 int ext2fs_native_flag(void);
1633
1634 /* newdir.c */
1635 extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino,
1636 ext2_ino_t parent_ino, char **block);
1637 extern errcode_t ext2fs_new_dir_inline_data(ext2_filsys fs, ext2_ino_t dir_ino,
1638 ext2_ino_t parent_ino, __u32 *iblock);
1639
1640 /* nls_utf8.c */
1641 extern const struct ext2fs_nls_table *ext2fs_load_nls_table(int encoding);
1642 extern int ext2fs_check_encoded_name(const struct ext2fs_nls_table *table,
1643 char *s, size_t len, char **pos);
1644 extern int ext2fs_casefold_cmp(const struct ext2fs_nls_table *table,
1645 const unsigned char *str1, size_t len1,
1646 const unsigned char *str2, size_t len2);
1647
1648 /* mkdir.c */
1649 extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum,
1650 const char *name);
1651
1652 /* mkjournal.c */
1653 struct ext2fs_journal_params {
1654 blk_t num_journal_blocks;
1655 blk_t num_fc_blocks;
1656 };
1657 extern errcode_t ext2fs_get_journal_params(
1658 struct ext2fs_journal_params *params, ext2_filsys fs);
1659 extern errcode_t ext2fs_zero_blocks(ext2_filsys fs, blk_t blk, int num,
1660 blk_t *ret_blk, int *ret_count);
1661 extern errcode_t ext2fs_zero_blocks2(ext2_filsys fs, blk64_t blk, int num,
1662 blk64_t *ret_blk, int *ret_count);
1663 extern errcode_t ext2fs_create_journal_superblock(ext2_filsys fs,
1664 __u32 num_blocks, int flags,
1665 char **ret_jsb);
1666 extern errcode_t ext2fs_create_journal_superblock2(ext2_filsys fs,
1667 struct ext2fs_journal_params *params,
1668 int flags, char **ret_jsb);
1669 extern errcode_t ext2fs_add_journal_device(ext2_filsys fs,
1670 ext2_filsys journal_dev);
1671 extern errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t num_blocks,
1672 int flags);
1673 extern errcode_t ext2fs_add_journal_inode2(ext2_filsys fs, blk_t num_blocks,
1674 blk64_t goal, int flags);
1675 extern errcode_t ext2fs_add_journal_inode3(ext2_filsys fs,
1676 struct ext2fs_journal_params *params,
1677 blk64_t goal, int flags);
1678 extern int ext2fs_default_journal_size(__u64 num_blocks);
1679 extern int ext2fs_journal_sb_start(int blocksize);
1680
1681 /* openfs.c */
1682 extern errcode_t ext2fs_open(const char *name, int flags, int superblock,
1683 unsigned int block_size, io_manager manager,
1684 ext2_filsys *ret_fs);
1685 extern errcode_t ext2fs_open2(const char *name, const char *io_options,
1686 int flags, int superblock,
1687 unsigned int block_size, io_manager manager,
1688 ext2_filsys *ret_fs);
1689 /*
1690 * The dgrp_t argument to these two functions is not actually a group number
1691 * but a block number offset within a group table! Convert with the formula
1692 * (group_number / groups_per_block).
1693 */
1694 extern blk64_t ext2fs_descriptor_block_loc2(ext2_filsys fs,
1695 blk64_t group_block, dgrp_t i);
1696 extern blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block,
1697 dgrp_t i);
1698 errcode_t ext2fs_get_data_io(ext2_filsys fs, io_channel *old_io);
1699 errcode_t ext2fs_set_data_io(ext2_filsys fs, io_channel new_io);
1700 errcode_t ext2fs_rewrite_to_io(ext2_filsys fs, io_channel new_io);
1701
1702 /* get_pathname.c */
1703 extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino,
1704 char **name);
1705
1706 /* link.c */
1707 #define EXT2FS_UNLINK_FORCE 0x1 /* Forcefully unlink even if
1708 * the inode number doesn't
1709 * match the dirent
1710 */
1711 errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name,
1712 ext2_ino_t ino, int flags);
1713 errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir, const char *name,
1714 ext2_ino_t ino, int flags);
1715
1716 /* symlink.c */
1717 errcode_t ext2fs_symlink(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t ino,
1718 const char *name, const char *target);
1719 int ext2fs_is_fast_symlink(struct ext2_inode *inode);
1720
1721 /* mmp.c */
1722 errcode_t ext2fs_mmp_read(ext2_filsys fs, blk64_t mmp_blk, void *buf);
1723 errcode_t ext2fs_mmp_write(ext2_filsys fs, blk64_t mmp_blk, void *buf);
1724 errcode_t ext2fs_mmp_clear(ext2_filsys fs);
1725 errcode_t ext2fs_mmp_init(ext2_filsys fs);
1726 errcode_t ext2fs_mmp_start(ext2_filsys fs);
1727 errcode_t ext2fs_mmp_update(ext2_filsys fs);
1728 errcode_t ext2fs_mmp_update2(ext2_filsys fs, int immediately);
1729 errcode_t ext2fs_mmp_stop(ext2_filsys fs);
1730 unsigned ext2fs_mmp_new_seq(void);
1731
1732 /* read_bb.c */
1733 extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs,
1734 ext2_badblocks_list *bb_list);
1735
1736 /* read_bb_file.c */
1737 extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f,
1738 ext2_badblocks_list *bb_list,
1739 void *priv_data,
1740 void (*invalid)(ext2_filsys fs,
1741 blk_t blk,
1742 char *badstr,
1743 void *priv_data));
1744 extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f,
1745 ext2_badblocks_list *bb_list,
1746 void (*invalid)(ext2_filsys fs,
1747 blk_t blk));
1748
1749 /* res_gdt.c */
1750 extern errcode_t ext2fs_create_resize_inode(ext2_filsys fs);
1751
1752 /* rw_bitmaps.c */
1753 extern errcode_t ext2fs_rw_bitmaps(ext2_filsys fs, int flags, int num_threads);
1754 extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs);
1755 extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs);
1756 extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs);
1757 extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs);
1758 extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs);
1759 extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs);
1760
1761 /*sha256.c */
1762 #define EXT2FS_SHA256_LENGTH 32
1763 #if 0
1764 extern void ext2fs_sha256(const unsigned char *in, unsigned long in_size,
1765 unsigned char out[EXT2FS_SHA256_LENGTH]);
1766 #endif
1767
1768 /* sha512.c */
1769 #define EXT2FS_SHA512_LENGTH 64
1770 extern void ext2fs_sha512(const unsigned char *in, unsigned long in_size,
1771 unsigned char out[EXT2FS_SHA512_LENGTH]);
1772
1773 /* swapfs.c */
1774 extern errcode_t ext2fs_dirent_swab_in2(ext2_filsys fs, char *buf, size_t size,
1775 int flags);
1776 extern errcode_t ext2fs_dirent_swab_in(ext2_filsys fs, char *buf, int flags);
1777 extern errcode_t ext2fs_dirent_swab_out2(ext2_filsys fs, char *buf, size_t size,
1778 int flags);
1779 extern errcode_t ext2fs_dirent_swab_out(ext2_filsys fs, char *buf, int flags);
1780 extern void ext2fs_swap_ext_attr(char *to, char *from, int bufsize,
1781 int has_header);
1782 extern void ext2fs_swap_ext_attr_header(struct ext2_ext_attr_header *to_header,
1783 struct ext2_ext_attr_header *from_hdr);
1784 extern void ext2fs_swap_ext_attr_entry(struct ext2_ext_attr_entry *to_entry,
1785 struct ext2_ext_attr_entry *from_entry);
1786 extern void ext2fs_swap_super(struct ext2_super_block * super);
1787 extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp);
1788 extern void ext2fs_swap_group_desc2(ext2_filsys, struct ext2_group_desc *gdp);
1789 extern void ext2fs_swap_inode_full(ext2_filsys fs, struct ext2_inode_large *t,
1790 struct ext2_inode_large *f, int hostorder,
1791 int bufsize);
1792 extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t,
1793 struct ext2_inode *f, int hostorder);
1794 extern void ext2fs_swap_mmp(struct mmp_struct *mmp);
1795
1796 /* unix_io.c */
1797 extern int ext2fs_open_file(const char *pathname, int flags, mode_t mode);
1798 extern int ext2fs_stat(const char *path, ext2fs_struct_stat *buf);
1799 extern int ext2fs_fstat(int fd, ext2fs_struct_stat *buf);
1800
1801 /* valid_blk.c */
1802 extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode);
1803 extern int ext2fs_inode_has_valid_blocks2(ext2_filsys fs,
1804 struct ext2_inode *inode);
1805
1806 /* version.c */
1807 extern int ext2fs_parse_version_string(const char *ver_string);
1808 extern int ext2fs_get_library_version(const char **ver_string,
1809 const char **date_string);
1810
1811 /* write_bb_file.c */
1812 extern errcode_t ext2fs_write_bb_FILE(ext2_badblocks_list bb_list,
1813 unsigned int flags,
1814 FILE *f);
1815
1816
1817 /* inline functions */
1818 #ifdef NO_INLINE_FUNCS
1819 extern errcode_t ext2fs_get_mem(unsigned long size, void *ptr);
1820 extern errcode_t ext2fs_get_memzero(unsigned long size, void *ptr);
1821 extern errcode_t ext2fs_get_array(unsigned long count,
1822 unsigned long size, void *ptr);
1823 extern errcode_t ext2fs_get_arrayzero(unsigned long count,
1824 unsigned long size, void *ptr);
1825 extern errcode_t ext2fs_free_mem(void *ptr);
1826 extern errcode_t ext2fs_resize_mem(unsigned long old_size,
1827 unsigned long size, void *ptr);
1828 extern errcode_t ext2fs_resize_array(unsigned long old_count, unsigned long count,
1829 unsigned long size, void *ptr);
1830 extern void ext2fs_mark_super_dirty(ext2_filsys fs);
1831 extern void ext2fs_mark_changed(ext2_filsys fs);
1832 extern int ext2fs_test_changed(ext2_filsys fs);
1833 extern void ext2fs_mark_valid(ext2_filsys fs);
1834 extern void ext2fs_unmark_valid(ext2_filsys fs);
1835 extern int ext2fs_test_valid(ext2_filsys fs);
1836 extern void ext2fs_mark_ib_dirty(ext2_filsys fs);
1837 extern void ext2fs_mark_bb_dirty(ext2_filsys fs);
1838 extern int ext2fs_test_ib_dirty(ext2_filsys fs);
1839 extern int ext2fs_test_bb_dirty(ext2_filsys fs);
1840 extern dgrp_t ext2fs_group_of_blk(ext2_filsys fs, blk_t blk);
1841 extern dgrp_t ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino);
1842 extern blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group);
1843 extern blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group);
1844 extern blk_t ext2fs_inode_data_blocks(ext2_filsys fs,
1845 struct ext2_inode *inode);
1846 extern int ext2fs_htree_intnode_maxrecs(ext2_filsys fs, int blocks);
1847 extern unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b);
1848 extern __u64 ext2fs_div64_ceil(__u64 a, __u64 b);
1849 extern int ext2fs_dirent_name_len(const struct ext2_dir_entry *entry);
1850 extern void ext2fs_dirent_set_name_len(struct ext2_dir_entry *entry, int len);
1851 extern int ext2fs_dirent_file_type(const struct ext2_dir_entry *entry);
1852 extern void ext2fs_dirent_set_file_type(struct ext2_dir_entry *entry, int type);
1853 extern struct ext2_inode *ext2fs_inode(struct ext2_inode_large * large_inode);
1854 extern const struct ext2_inode *ext2fs_const_inode(const struct ext2_inode_large * large_inode);
1855
1856 #endif
1857
1858 /*
1859 * The actual inlined functions definitions themselves...
1860 *
1861 * If NO_INLINE_FUNCS is defined, then we won't try to do inline
1862 * functions at all!
1863 */
1864 #if (defined(INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS))
1865 #ifdef INCLUDE_INLINE_FUNCS
1866 #define _INLINE_ extern
1867 #else
1868 #if (__STDC_VERSION__ >= 199901L)
1869 #define _INLINE_ inline
1870 #else
1871 #ifdef __GNUC__
1872 #define _INLINE_ extern __inline__
1873 #else /* For Watcom C */
1874 #define _INLINE_ extern inline
1875 #endif /* __GNUC__ */
1876 #endif /* __STDC_VERSION__ >= 199901L */
1877 #endif
1878
1879 #ifndef EXT2_CUSTOM_MEMORY_ROUTINES
1880 #include <string.h>
1881 /*
1882 * Allocate memory. The 'ptr' arg must point to a pointer.
1883 */
ext2fs_get_mem(unsigned long size,void * ptr)1884 _INLINE_ errcode_t ext2fs_get_mem(unsigned long size, void *ptr)
1885 {
1886 void *pp;
1887
1888 pp = malloc(size);
1889 if (!pp)
1890 return EXT2_ET_NO_MEMORY;
1891 memcpy(ptr, &pp, sizeof (pp));
1892 return 0;
1893 }
1894
ext2fs_get_memzero(unsigned long size,void * ptr)1895 _INLINE_ errcode_t ext2fs_get_memzero(unsigned long size, void *ptr)
1896 {
1897 void *pp;
1898
1899 pp = malloc(size);
1900 if (!pp)
1901 return EXT2_ET_NO_MEMORY;
1902 memset(pp, 0, size);
1903 memcpy(ptr, &pp, sizeof(pp));
1904 return 0;
1905 }
1906
ext2fs_get_array(unsigned long count,unsigned long size,void * ptr)1907 _INLINE_ errcode_t ext2fs_get_array(unsigned long count, unsigned long size,
1908 void *ptr)
1909 {
1910 if (count && (~0UL)/count < size)
1911 return EXT2_ET_NO_MEMORY;
1912 return ext2fs_get_mem(count*size, ptr);
1913 }
1914
ext2fs_get_arrayzero(unsigned long count,unsigned long size,void * ptr)1915 _INLINE_ errcode_t ext2fs_get_arrayzero(unsigned long count,
1916 unsigned long size, void *ptr)
1917 {
1918 if (count && (~0UL)/count < size)
1919 return EXT2_ET_NO_MEMORY;
1920
1921 return ext2fs_get_memzero((size_t)count * size, ptr);
1922 }
1923
1924 /*
1925 * Free memory. The 'ptr' arg must point to a pointer.
1926 */
ext2fs_free_mem(void * ptr)1927 _INLINE_ errcode_t ext2fs_free_mem(void *ptr)
1928 {
1929 void *p;
1930
1931 memcpy(&p, ptr, sizeof(p));
1932 free(p);
1933 p = 0;
1934 memcpy(ptr, &p, sizeof(p));
1935 return 0;
1936 }
1937
1938 /*
1939 * Resize memory. The 'ptr' arg must point to a pointer.
1940 */
ext2fs_resize_mem(unsigned long EXT2FS_ATTR ((unused))old_size,unsigned long size,void * ptr)1941 _INLINE_ errcode_t ext2fs_resize_mem(unsigned long EXT2FS_ATTR((unused)) old_size,
1942 unsigned long size, void *ptr)
1943 {
1944 void *p;
1945
1946 /* Use "memcpy" for pointer assignments here to avoid problems
1947 * with C99 strict type aliasing rules. */
1948 memcpy(&p, ptr, sizeof(p));
1949 p = realloc(p, size);
1950 if (!p)
1951 return EXT2_ET_NO_MEMORY;
1952 memcpy(ptr, &p, sizeof(p));
1953 return 0;
1954 }
1955
1956 /*
1957 * Resize array. The 'ptr' arg must point to a pointer.
1958 */
ext2fs_resize_array(unsigned long size,unsigned long old_count,unsigned long count,void * ptr)1959 _INLINE_ errcode_t ext2fs_resize_array(unsigned long size,
1960 unsigned long old_count,
1961 unsigned long count, void *ptr)
1962 {
1963 unsigned long old_size;
1964 errcode_t retval;
1965
1966 if (count && (~0UL)/count < size)
1967 return EXT2_ET_NO_MEMORY;
1968
1969 size *= count;
1970 old_size = size * old_count;
1971 retval = ext2fs_resize_mem(old_size, size, ptr);
1972 if (retval)
1973 return retval;
1974
1975 if (size > old_size) {
1976 void *p;
1977
1978 memcpy(&p, ptr, sizeof(p));
1979 memset((char *)p + old_size, 0, size - old_size);
1980 memcpy(ptr, &p, sizeof(p));
1981 }
1982
1983 return 0;
1984 }
1985 #endif /* Custom memory routines */
1986
1987 /*
1988 * Mark a filesystem superblock as dirty
1989 */
ext2fs_mark_super_dirty(ext2_filsys fs)1990 _INLINE_ void ext2fs_mark_super_dirty(ext2_filsys fs)
1991 {
1992 fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_CHANGED;
1993 }
1994
1995 /*
1996 * Mark a filesystem as changed
1997 */
ext2fs_mark_changed(ext2_filsys fs)1998 _INLINE_ void ext2fs_mark_changed(ext2_filsys fs)
1999 {
2000 fs->flags |= EXT2_FLAG_CHANGED;
2001 }
2002
2003 /*
2004 * Check to see if a filesystem has changed
2005 */
ext2fs_test_changed(ext2_filsys fs)2006 _INLINE_ int ext2fs_test_changed(ext2_filsys fs)
2007 {
2008 return (fs->flags & EXT2_FLAG_CHANGED);
2009 }
2010
2011 /*
2012 * Mark a filesystem as valid
2013 */
ext2fs_mark_valid(ext2_filsys fs)2014 _INLINE_ void ext2fs_mark_valid(ext2_filsys fs)
2015 {
2016 fs->flags |= EXT2_FLAG_VALID;
2017 }
2018
2019 /*
2020 * Mark a filesystem as NOT valid
2021 */
ext2fs_unmark_valid(ext2_filsys fs)2022 _INLINE_ void ext2fs_unmark_valid(ext2_filsys fs)
2023 {
2024 fs->flags &= ~EXT2_FLAG_VALID;
2025 }
2026
2027 /*
2028 * Check to see if a filesystem is valid
2029 */
ext2fs_test_valid(ext2_filsys fs)2030 _INLINE_ int ext2fs_test_valid(ext2_filsys fs)
2031 {
2032 return (fs->flags & EXT2_FLAG_VALID);
2033 }
2034
2035 /*
2036 * Mark the inode bitmap as dirty
2037 */
ext2fs_mark_ib_dirty(ext2_filsys fs)2038 _INLINE_ void ext2fs_mark_ib_dirty(ext2_filsys fs)
2039 {
2040 fs->flags |= EXT2_FLAG_IB_DIRTY | EXT2_FLAG_CHANGED;
2041 }
2042
2043 /*
2044 * Mark the block bitmap as dirty
2045 */
ext2fs_mark_bb_dirty(ext2_filsys fs)2046 _INLINE_ void ext2fs_mark_bb_dirty(ext2_filsys fs)
2047 {
2048 fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_CHANGED;
2049 }
2050
2051 /*
2052 * Check to see if a filesystem's inode bitmap is dirty
2053 */
ext2fs_test_ib_dirty(ext2_filsys fs)2054 _INLINE_ int ext2fs_test_ib_dirty(ext2_filsys fs)
2055 {
2056 return (fs->flags & EXT2_FLAG_IB_DIRTY);
2057 }
2058
2059 /*
2060 * Check to see if a filesystem's block bitmap is dirty
2061 */
ext2fs_test_bb_dirty(ext2_filsys fs)2062 _INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs)
2063 {
2064 return (fs->flags & EXT2_FLAG_BB_DIRTY);
2065 }
2066
2067 /*
2068 * Return the group # of a block
2069 */
ext2fs_group_of_blk(ext2_filsys fs,blk_t blk)2070 _INLINE_ dgrp_t ext2fs_group_of_blk(ext2_filsys fs, blk_t blk)
2071 {
2072 return ext2fs_group_of_blk2(fs, blk);
2073 }
2074 /*
2075 * Return the group # of an inode number
2076 */
ext2fs_group_of_ino(ext2_filsys fs,ext2_ino_t ino)2077 _INLINE_ dgrp_t ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino)
2078 {
2079 return (ino - 1) / fs->super->s_inodes_per_group;
2080 }
2081
2082 /*
2083 * Return the first block (inclusive) in a group
2084 */
ext2fs_group_first_block(ext2_filsys fs,dgrp_t group)2085 _INLINE_ blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group)
2086 {
2087 return (blk_t) ext2fs_group_first_block2(fs, group);
2088 }
2089
2090 /*
2091 * Return the last block (inclusive) in a group
2092 */
ext2fs_group_last_block(ext2_filsys fs,dgrp_t group)2093 _INLINE_ blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group)
2094 {
2095 return (blk_t) ext2fs_group_last_block2(fs, group);
2096 }
2097
ext2fs_inode_data_blocks(ext2_filsys fs,struct ext2_inode * inode)2098 _INLINE_ blk_t ext2fs_inode_data_blocks(ext2_filsys fs,
2099 struct ext2_inode *inode)
2100 {
2101 return (blk_t) ext2fs_inode_data_blocks2(fs, inode);
2102 }
2103
ext2fs_htree_intnode_maxrecs(ext2_filsys fs,int blocks)2104 _INLINE_ int ext2fs_htree_intnode_maxrecs(ext2_filsys fs, int blocks)
2105 {
2106 int csum_size = 0;
2107
2108 if ((EXT2_SB(fs->super)->s_feature_ro_compat &
2109 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM) != 0)
2110 csum_size = sizeof(struct ext2_dx_tail);
2111 return blocks * ((fs->blocksize - (8 + csum_size)) /
2112 sizeof(struct ext2_dx_entry));
2113 }
2114
2115 /*
2116 * This is an efficient, overflow safe way of calculating ceil((1.0 * a) / b)
2117 */
ext2fs_div_ceil(unsigned int a,unsigned int b)2118 _INLINE_ unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b)
2119 {
2120 if (!a)
2121 return 0;
2122 return ((a - 1) / b) + 1;
2123 }
2124
ext2fs_div64_ceil(__u64 a,__u64 b)2125 _INLINE_ __u64 ext2fs_div64_ceil(__u64 a, __u64 b)
2126 {
2127 if (!a)
2128 return 0;
2129 return ((a - 1) / b) + 1;
2130 }
2131
ext2fs_dirent_name_len(const struct ext2_dir_entry * entry)2132 _INLINE_ int ext2fs_dirent_name_len(const struct ext2_dir_entry *entry)
2133 {
2134 return entry->name_len & 0xff;
2135 }
2136
ext2fs_dirent_set_name_len(struct ext2_dir_entry * entry,int len)2137 _INLINE_ void ext2fs_dirent_set_name_len(struct ext2_dir_entry *entry, int len)
2138 {
2139 entry->name_len = (entry->name_len & 0xff00) | (len & 0xff);
2140 }
2141
ext2fs_dirent_file_type(const struct ext2_dir_entry * entry)2142 _INLINE_ int ext2fs_dirent_file_type(const struct ext2_dir_entry *entry)
2143 {
2144 return entry->name_len >> 8;
2145 }
2146
ext2fs_dirent_set_file_type(struct ext2_dir_entry * entry,int type)2147 _INLINE_ void ext2fs_dirent_set_file_type(struct ext2_dir_entry *entry, int type)
2148 {
2149 entry->name_len = (entry->name_len & 0xff) | (type << 8);
2150 }
2151
ext2fs_inode(struct ext2_inode_large * large_inode)2152 _INLINE_ struct ext2_inode *ext2fs_inode(struct ext2_inode_large * large_inode)
2153 {
2154 /* It is always safe to convert large inode to a small inode */
2155 return (struct ext2_inode *) large_inode;
2156 }
2157
2158 _INLINE_ const struct ext2_inode *
ext2fs_const_inode(const struct ext2_inode_large * large_inode)2159 ext2fs_const_inode(const struct ext2_inode_large * large_inode)
2160 {
2161 /* It is always safe to convert large inode to a small inode */
2162 return (const struct ext2_inode *) large_inode;
2163 }
2164
2165 #undef _INLINE_
2166 #endif
2167
2168 /* htree levels for ext4 */
2169 #define EXT4_HTREE_LEVEL_COMPAT 2
2170 #define EXT4_HTREE_LEVEL 3
2171
ext2_dir_htree_level(ext2_filsys fs)2172 static inline unsigned int ext2_dir_htree_level(ext2_filsys fs)
2173 {
2174 if (ext2fs_has_feature_largedir(fs->super))
2175 return EXT4_HTREE_LEVEL;
2176
2177 return EXT4_HTREE_LEVEL_COMPAT;
2178 }
2179
2180 #ifdef __cplusplus
2181 }
2182 #endif
2183
2184 #endif /* _EXT2FS_EXT2FS_H */
2185