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