1 /*
2 * ext2fs.h --- ext2fs
3 *
4 * Copyright (C) 1993, 1994, 1995, 1996 Theodore Ts'o.
5 *
6 * %Begin-Header%
7 * This file may be redistributed under the terms of the GNU Library
8 * General Public License, version 2.
9 * %End-Header%
10 */
11
12 #ifndef _EXT2FS_EXT2FS_H
13 #define _EXT2FS_EXT2FS_H
14
15 #ifdef __GNUC__
16 #define EXT2FS_ATTR(x) __attribute__(x)
17 #else
18 #define EXT2FS_ATTR(x)
19 #endif
20
21 #ifdef __cplusplus
22 extern "C" {
23 #endif
24
25 /*
26 * Non-GNU C compilers won't necessarily understand inline
27 */
28 #if (!defined(__GNUC__) && !defined(__WATCOMC__))
29 #define NO_INLINE_FUNCS
30 #endif
31
32 /*
33 * Where the master copy of the superblock is located, and how big
34 * superblocks are supposed to be. We define SUPERBLOCK_SIZE because
35 * the size of the superblock structure is not necessarily trustworthy
36 * (some versions have the padding set up so that the superblock is
37 * 1032 bytes long).
38 */
39 #define SUPERBLOCK_OFFSET 1024
40 #define SUPERBLOCK_SIZE 1024
41
42 /*
43 * The last ext2fs revision level that this version of the library is
44 * able to support.
45 */
46 #define EXT2_LIB_CURRENT_REV EXT2_DYNAMIC_REV
47
48 #ifdef HAVE_SYS_TYPES_H
49 #include <sys/types.h>
50 #endif
51
52 #include <stdio.h>
53 #include <stdlib.h>
54 #include <string.h>
55 #include <errno.h>
56
57 #if EXT2_FLAT_INCLUDES
58 #include "e2_types.h"
59 #include "ext2_fs.h"
60 #include "ext3_extents.h"
61 #else
62 #include <ext2fs/ext2_types.h>
63 #include <ext2fs/ext2_fs.h>
64 #include <ext2fs/ext3_extents.h>
65 #endif /* EXT2_FLAT_INCLUDES */
66
67 #ifdef __CHECK_ENDIAN__
68 #define __bitwise __attribute__((bitwise))
69 #else
70 #define __bitwise
71 #endif
72
73 typedef __u32 __bitwise ext2_ino_t;
74 typedef __u32 __bitwise blk_t;
75 typedef __u64 __bitwise blk64_t;
76 typedef __u32 __bitwise dgrp_t;
77 typedef __u32 __bitwise ext2_off_t;
78 typedef __u64 __bitwise ext2_off64_t;
79 typedef __s64 __bitwise e2_blkcnt_t;
80 typedef __u32 __bitwise ext2_dirhash_t;
81
82 #if EXT2_FLAT_INCLUDES
83 #include "com_err.h"
84 #include "ext2_io.h"
85 #include "ext2_err.h"
86 #include "ext2_ext_attr.h"
87 #else
88 #include <et/com_err.h>
89 #include <ext2fs/ext2_io.h>
90 #include <ext2fs/ext2_err.h>
91 #include <ext2fs/ext2_ext_attr.h>
92 #endif
93
94 /*
95 * Portability help for Microsoft Visual C++
96 */
97 #ifdef _MSC_VER
98 #define EXT2_QSORT_TYPE int __cdecl
99 #else
100 #define EXT2_QSORT_TYPE int
101 #endif
102
103 typedef struct struct_ext2_filsys *ext2_filsys;
104
105 #define EXT2FS_MARK_ERROR 0
106 #define EXT2FS_UNMARK_ERROR 1
107 #define EXT2FS_TEST_ERROR 2
108
109 typedef struct ext2fs_struct_generic_bitmap *ext2fs_generic_bitmap;
110 typedef struct ext2fs_struct_generic_bitmap *ext2fs_inode_bitmap;
111 typedef struct ext2fs_struct_generic_bitmap *ext2fs_block_bitmap;
112
113 #define EXT2_FIRST_INODE(s) EXT2_FIRST_INO(s)
114
115
116 /*
117 * Badblocks list definitions
118 */
119
120 typedef struct ext2_struct_u32_list *ext2_badblocks_list;
121 typedef struct ext2_struct_u32_iterate *ext2_badblocks_iterate;
122
123 typedef struct ext2_struct_u32_list *ext2_u32_list;
124 typedef struct ext2_struct_u32_iterate *ext2_u32_iterate;
125
126 /* old */
127 typedef struct ext2_struct_u32_list *badblocks_list;
128 typedef struct ext2_struct_u32_iterate *badblocks_iterate;
129
130 #define BADBLOCKS_FLAG_DIRTY 1
131
132 /*
133 * ext2_dblist structure and abstractions (see dblist.c)
134 */
135 struct ext2_db_entry2 {
136 ext2_ino_t ino;
137 blk64_t blk;
138 e2_blkcnt_t blockcnt;
139 };
140
141 /* Ye Olde 32-bit version */
142 struct ext2_db_entry {
143 ext2_ino_t ino;
144 blk_t blk;
145 int blockcnt;
146 };
147
148 typedef struct ext2_struct_dblist *ext2_dblist;
149
150 #define DBLIST_ABORT 1
151
152 /*
153 * ext2_fileio definitions
154 */
155
156 #define EXT2_FILE_WRITE 0x0001
157 #define EXT2_FILE_CREATE 0x0002
158
159 #define EXT2_FILE_MASK 0x00FF
160
161 #define EXT2_FILE_BUF_DIRTY 0x4000
162 #define EXT2_FILE_BUF_VALID 0x2000
163
164 typedef struct ext2_file *ext2_file_t;
165
166 #define EXT2_SEEK_SET 0
167 #define EXT2_SEEK_CUR 1
168 #define EXT2_SEEK_END 2
169
170 /*
171 * Flags for the ext2_filsys structure and for ext2fs_open()
172 */
173 #define EXT2_FLAG_RW 0x01
174 #define EXT2_FLAG_CHANGED 0x02
175 #define EXT2_FLAG_DIRTY 0x04
176 #define EXT2_FLAG_VALID 0x08
177 #define EXT2_FLAG_IB_DIRTY 0x10
178 #define EXT2_FLAG_BB_DIRTY 0x20
179 #define EXT2_FLAG_SWAP_BYTES 0x40
180 #define EXT2_FLAG_SWAP_BYTES_READ 0x80
181 #define EXT2_FLAG_SWAP_BYTES_WRITE 0x100
182 #define EXT2_FLAG_MASTER_SB_ONLY 0x200
183 #define EXT2_FLAG_FORCE 0x400
184 #define EXT2_FLAG_SUPER_ONLY 0x800
185 #define EXT2_FLAG_JOURNAL_DEV_OK 0x1000
186 #define EXT2_FLAG_IMAGE_FILE 0x2000
187 #define EXT2_FLAG_EXCLUSIVE 0x4000
188 #define EXT2_FLAG_SOFTSUPP_FEATURES 0x8000
189 #define EXT2_FLAG_NOFREE_ON_ERROR 0x10000
190 #define EXT2_FLAG_64BITS 0x20000
191 #define EXT2_FLAG_PRINT_PROGRESS 0x40000
192 #define EXT2_FLAG_DIRECT_IO 0x80000
193 #define EXT2_FLAG_SKIP_MMP 0x100000
194
195 /*
196 * Special flag in the ext2 inode i_flag field that means that this is
197 * a new inode. (So that ext2_write_inode() can clear extra fields.)
198 */
199 #define EXT2_NEW_INODE_FL 0x80000000
200
201 /*
202 * Flags for mkjournal
203 */
204 #define EXT2_MKJOURNAL_V1_SUPER 0x0000001 /* create V1 superblock (deprecated) */
205 #define EXT2_MKJOURNAL_LAZYINIT 0x0000002 /* don't zero journal inode before use*/
206 #define EXT2_MKJOURNAL_NO_MNT_CHECK 0x0000004 /* don't check mount status */
207
208 struct opaque_ext2_group_desc;
209
210 struct struct_ext2_filsys {
211 errcode_t magic;
212 io_channel io;
213 int flags;
214 char * device_name;
215 struct ext2_super_block * super;
216 unsigned int blocksize;
217 int fragsize;
218 dgrp_t group_desc_count;
219 unsigned long desc_blocks;
220 struct opaque_ext2_group_desc * group_desc;
221 unsigned int inode_blocks_per_group;
222 ext2fs_inode_bitmap inode_map;
223 ext2fs_block_bitmap block_map;
224 /* XXX FIXME-64: not 64-bit safe, but not used? */
225 errcode_t (*get_blocks)(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks);
226 errcode_t (*check_directory)(ext2_filsys fs, ext2_ino_t ino);
227 errcode_t (*write_bitmaps)(ext2_filsys fs);
228 errcode_t (*read_inode)(ext2_filsys fs, ext2_ino_t ino,
229 struct ext2_inode *inode);
230 errcode_t (*write_inode)(ext2_filsys fs, ext2_ino_t ino,
231 struct ext2_inode *inode);
232 ext2_badblocks_list badblocks;
233 ext2_dblist dblist;
234 __u32 stride; /* for mke2fs */
235 struct ext2_super_block * orig_super;
236 struct ext2_image_hdr * image_header;
237 __u32 umask;
238 time_t now;
239 int cluster_ratio_bits;
240 __u16 default_bitmap_type;
241 __u16 pad;
242 /*
243 * Reserved for future expansion
244 */
245 __u32 reserved[5];
246
247 /*
248 * Reserved for the use of the calling application.
249 */
250 void * priv_data;
251
252 /*
253 * Inode cache
254 */
255 struct ext2_inode_cache *icache;
256 io_channel image_io;
257
258 /*
259 * More callback functions
260 */
261 errcode_t (*get_alloc_block)(ext2_filsys fs, blk64_t goal,
262 blk64_t *ret);
263 void (*block_alloc_stats)(ext2_filsys fs, blk64_t blk, int inuse);
264
265 /*
266 * Buffers for Multiple mount protection(MMP) block.
267 */
268 void *mmp_buf;
269 void *mmp_cmp;
270 int mmp_fd;
271
272 /*
273 * Time at which e2fsck last updated the MMP block.
274 */
275 long mmp_last_written;
276 };
277
278 #if EXT2_FLAT_INCLUDES
279 #include "e2_bitops.h"
280 #else
281 #include <ext2fs/bitops.h>
282 #endif
283
284 /*
285 * 64-bit bitmap backend types
286 */
287 #define EXT2FS_BMAP64_BITARRAY 1
288 #define EXT2FS_BMAP64_RBTREE 2
289 #define EXT2FS_BMAP64_AUTODIR 3
290
291 /*
292 * Return flags for the block iterator functions
293 */
294 #define BLOCK_CHANGED 1
295 #define BLOCK_ABORT 2
296 #define BLOCK_ERROR 4
297
298 /*
299 * Block interate flags
300 *
301 * BLOCK_FLAG_APPEND, or BLOCK_FLAG_HOLE, indicates that the interator
302 * function should be called on blocks where the block number is zero.
303 * This is used by ext2fs_expand_dir() to be able to add a new block
304 * to an inode. It can also be used for programs that want to be able
305 * to deal with files that contain "holes".
306 *
307 * BLOCK_FLAG_DEPTH_TRAVERSE indicates that the iterator function for
308 * the indirect, doubly indirect, etc. blocks should be called after
309 * all of the blocks containined in the indirect blocks are processed.
310 * This is useful if you are going to be deallocating blocks from an
311 * inode.
312 *
313 * BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be
314 * called for data blocks only.
315 *
316 * BLOCK_FLAG_READ_ONLY is a promise by the caller that it will not
317 * modify returned block number.
318 *
319 * BLOCK_FLAG_NO_LARGE is for internal use only. It informs
320 * ext2fs_block_iterate2 that large files won't be accepted.
321 */
322 #define BLOCK_FLAG_APPEND 1
323 #define BLOCK_FLAG_HOLE 1
324 #define BLOCK_FLAG_DEPTH_TRAVERSE 2
325 #define BLOCK_FLAG_DATA_ONLY 4
326 #define BLOCK_FLAG_READ_ONLY 8
327
328 #define BLOCK_FLAG_NO_LARGE 0x1000
329
330 /*
331 * Magic "block count" return values for the block iterator function.
332 */
333 #define BLOCK_COUNT_IND (-1)
334 #define BLOCK_COUNT_DIND (-2)
335 #define BLOCK_COUNT_TIND (-3)
336 #define BLOCK_COUNT_TRANSLATOR (-4)
337
338 #if 0
339 /*
340 * Flags for ext2fs_move_blocks
341 */
342 #define EXT2_BMOVE_GET_DBLIST 0x0001
343 #define EXT2_BMOVE_DEBUG 0x0002
344 #endif
345
346 /*
347 * Generic (non-filesystem layout specific) extents structure
348 */
349
350 #define EXT2_EXTENT_FLAGS_LEAF 0x0001
351 #define EXT2_EXTENT_FLAGS_UNINIT 0x0002
352 #define EXT2_EXTENT_FLAGS_SECOND_VISIT 0x0004
353
354 struct ext2fs_extent {
355 blk64_t e_pblk; /* first physical block */
356 blk64_t e_lblk; /* first logical block extent covers */
357 __u32 e_len; /* number of blocks covered by extent */
358 __u32 e_flags; /* extent flags */
359 };
360
361 typedef struct ext2_extent_handle *ext2_extent_handle_t;
362 typedef struct ext2_extent_path *ext2_extent_path_t;
363
364 /*
365 * Flags used by ext2fs_extent_get()
366 */
367 #define EXT2_EXTENT_CURRENT 0x0000
368 #define EXT2_EXTENT_MOVE_MASK 0x000F
369 #define EXT2_EXTENT_ROOT 0x0001
370 #define EXT2_EXTENT_LAST_LEAF 0x0002
371 #define EXT2_EXTENT_FIRST_SIB 0x0003
372 #define EXT2_EXTENT_LAST_SIB 0x0004
373 #define EXT2_EXTENT_NEXT_SIB 0x0005
374 #define EXT2_EXTENT_PREV_SIB 0x0006
375 #define EXT2_EXTENT_NEXT_LEAF 0x0007
376 #define EXT2_EXTENT_PREV_LEAF 0x0008
377 #define EXT2_EXTENT_NEXT 0x0009
378 #define EXT2_EXTENT_PREV 0x000A
379 #define EXT2_EXTENT_UP 0x000B
380 #define EXT2_EXTENT_DOWN 0x000C
381 #define EXT2_EXTENT_DOWN_AND_LAST 0x000D
382
383 /*
384 * Flags used by ext2fs_extent_insert()
385 */
386 #define EXT2_EXTENT_INSERT_AFTER 0x0001 /* insert after handle loc'n */
387 #define EXT2_EXTENT_INSERT_NOSPLIT 0x0002 /* insert may not cause split */
388
389 /*
390 * Flags used by ext2fs_extent_delete()
391 */
392 #define EXT2_EXTENT_DELETE_KEEP_EMPTY 0x001 /* keep node if last extnt gone */
393
394 /*
395 * Flags used by ext2fs_extent_set_bmap()
396 */
397 #define EXT2_EXTENT_SET_BMAP_UNINIT 0x0001
398
399 /*
400 * Data structure returned by ext2fs_extent_get_info()
401 */
402 struct ext2_extent_info {
403 int curr_entry;
404 int curr_level;
405 int num_entries;
406 int max_entries;
407 int max_depth;
408 int bytes_avail;
409 blk64_t max_lblk;
410 blk64_t max_pblk;
411 __u32 max_len;
412 __u32 max_uninit_len;
413 };
414
415 /*
416 * Flags for directory block reading and writing functions
417 */
418 #define EXT2_DIRBLOCK_V2_STRUCT 0x0001
419
420 /*
421 * Return flags for the directory iterator functions
422 */
423 #define DIRENT_CHANGED 1
424 #define DIRENT_ABORT 2
425 #define DIRENT_ERROR 3
426
427 /*
428 * Directory iterator flags
429 */
430
431 #define DIRENT_FLAG_INCLUDE_EMPTY 1
432 #define DIRENT_FLAG_INCLUDE_REMOVED 2
433
434 #define DIRENT_DOT_FILE 1
435 #define DIRENT_DOT_DOT_FILE 2
436 #define DIRENT_OTHER_FILE 3
437 #define DIRENT_DELETED_FILE 4
438
439 /*
440 * Inode scan definitions
441 */
442 typedef struct ext2_struct_inode_scan *ext2_inode_scan;
443
444 /*
445 * ext2fs_scan flags
446 */
447 #define EXT2_SF_CHK_BADBLOCKS 0x0001
448 #define EXT2_SF_BAD_INODE_BLK 0x0002
449 #define EXT2_SF_BAD_EXTRA_BYTES 0x0004
450 #define EXT2_SF_SKIP_MISSING_ITABLE 0x0008
451 #define EXT2_SF_DO_LAZY 0x0010
452
453 /*
454 * ext2fs_check_if_mounted flags
455 */
456 #define EXT2_MF_MOUNTED 1
457 #define EXT2_MF_ISROOT 2
458 #define EXT2_MF_READONLY 4
459 #define EXT2_MF_SWAP 8
460 #define EXT2_MF_BUSY 16
461
462 /*
463 * Ext2/linux mode flags. We define them here so that we don't need
464 * to depend on the OS's sys/stat.h, since we may be compiling on a
465 * non-Linux system.
466 */
467 #define LINUX_S_IFMT 00170000
468 #define LINUX_S_IFSOCK 0140000
469 #define LINUX_S_IFLNK 0120000
470 #define LINUX_S_IFREG 0100000
471 #define LINUX_S_IFBLK 0060000
472 #define LINUX_S_IFDIR 0040000
473 #define LINUX_S_IFCHR 0020000
474 #define LINUX_S_IFIFO 0010000
475 #define LINUX_S_ISUID 0004000
476 #define LINUX_S_ISGID 0002000
477 #define LINUX_S_ISVTX 0001000
478
479 #define LINUX_S_IRWXU 00700
480 #define LINUX_S_IRUSR 00400
481 #define LINUX_S_IWUSR 00200
482 #define LINUX_S_IXUSR 00100
483
484 #define LINUX_S_IRWXG 00070
485 #define LINUX_S_IRGRP 00040
486 #define LINUX_S_IWGRP 00020
487 #define LINUX_S_IXGRP 00010
488
489 #define LINUX_S_IRWXO 00007
490 #define LINUX_S_IROTH 00004
491 #define LINUX_S_IWOTH 00002
492 #define LINUX_S_IXOTH 00001
493
494 #define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK)
495 #define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG)
496 #define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR)
497 #define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR)
498 #define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK)
499 #define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO)
500 #define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK)
501
502 /*
503 * ext2 size of an inode
504 */
505 #define EXT2_I_SIZE(i) ((i)->i_size | ((__u64) (i)->i_size_high << 32))
506
507 /*
508 * ext2_icount_t abstraction
509 */
510 #define EXT2_ICOUNT_OPT_INCREMENT 0x01
511
512 typedef struct ext2_icount *ext2_icount_t;
513
514 /*
515 * Flags for ext2fs_bmap
516 */
517 #define BMAP_ALLOC 0x0001
518 #define BMAP_SET 0x0002
519
520 /*
521 * Returned flags from ext2fs_bmap
522 */
523 #define BMAP_RET_UNINIT 0x0001
524
525 /*
526 * Flags for imager.c functions
527 */
528 #define IMAGER_FLAG_INODEMAP 1
529 #define IMAGER_FLAG_SPARSEWRITE 2
530
531 /*
532 * For checking structure magic numbers...
533 */
534
535 #define EXT2_CHECK_MAGIC(struct, code) \
536 if ((struct)->magic != (code)) return (code)
537
538
539 /*
540 * For ext2 compression support
541 */
542 #define EXT2FS_COMPRESSED_BLKADDR ((blk_t) -1)
543 #define HOLE_BLKADDR(_b) ((_b) == 0 || (_b) == EXT2FS_COMPRESSED_BLKADDR)
544
545 /*
546 * Features supported by this version of the library
547 */
548 #define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\
549 EXT2_FEATURE_COMPAT_IMAGIC_INODES|\
550 EXT3_FEATURE_COMPAT_HAS_JOURNAL|\
551 EXT2_FEATURE_COMPAT_RESIZE_INODE|\
552 EXT2_FEATURE_COMPAT_DIR_INDEX|\
553 EXT2_FEATURE_COMPAT_EXT_ATTR)
554
555 /* This #ifdef is temporary until compression is fully supported */
556 #ifdef ENABLE_COMPRESSION
557 #ifndef I_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL
558 /* If the below warning bugs you, then have
559 `CPPFLAGS=-DI_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL' in your
560 environment at configure time. */
561 #warning "Compression support is experimental"
562 #endif
563 #define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\
564 EXT2_FEATURE_INCOMPAT_COMPRESSION|\
565 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\
566 EXT2_FEATURE_INCOMPAT_META_BG|\
567 EXT3_FEATURE_INCOMPAT_RECOVER|\
568 EXT3_FEATURE_INCOMPAT_EXTENTS|\
569 EXT4_FEATURE_INCOMPAT_FLEX_BG|\
570 EXT4_FEATURE_INCOMPAT_MMP|\
571 EXT4_FEATURE_INCOMPAT_64BIT)
572 #else
573 #define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\
574 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\
575 EXT2_FEATURE_INCOMPAT_META_BG|\
576 EXT3_FEATURE_INCOMPAT_RECOVER|\
577 EXT3_FEATURE_INCOMPAT_EXTENTS|\
578 EXT4_FEATURE_INCOMPAT_FLEX_BG|\
579 EXT4_FEATURE_INCOMPAT_MMP|\
580 EXT4_FEATURE_INCOMPAT_64BIT)
581 #endif
582 #ifdef CONFIG_QUOTA
583 #define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\
584 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|\
585 EXT2_FEATURE_RO_COMPAT_LARGE_FILE|\
586 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|\
587 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|\
588 EXT4_FEATURE_RO_COMPAT_GDT_CSUM|\
589 EXT4_FEATURE_RO_COMPAT_BIGALLOC|\
590 EXT4_FEATURE_RO_COMPAT_QUOTA)
591 #else
592 #define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\
593 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|\
594 EXT2_FEATURE_RO_COMPAT_LARGE_FILE|\
595 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|\
596 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|\
597 EXT4_FEATURE_RO_COMPAT_GDT_CSUM|\
598 EXT4_FEATURE_RO_COMPAT_BIGALLOC)
599 #endif
600
601 /*
602 * These features are only allowed if EXT2_FLAG_SOFTSUPP_FEATURES is passed
603 * to ext2fs_openfs()
604 */
605 #define EXT2_LIB_SOFTSUPP_INCOMPAT (0)
606 #define EXT2_LIB_SOFTSUPP_RO_COMPAT (EXT4_FEATURE_RO_COMPAT_REPLICA)
607
608
609 /* Translate a block number to a cluster number */
610 #define EXT2FS_CLUSTER_RATIO(fs) (1 << (fs)->cluster_ratio_bits)
611 #define EXT2FS_CLUSTER_MASK(fs) (EXT2FS_CLUSTER_RATIO(fs) - 1)
612 #define EXT2FS_B2C(fs, blk) ((blk) >> (fs)->cluster_ratio_bits)
613 /* Translate a cluster number to a block number */
614 #define EXT2FS_C2B(fs, cluster) ((cluster) << (fs)->cluster_ratio_bits)
615 /* Translate # of blks to # of clusters */
616 #define EXT2FS_NUM_B2C(fs, blks) (((blks) + EXT2FS_CLUSTER_MASK(fs)) >> \
617 (fs)->cluster_ratio_bits)
618
619 #if defined(HAVE_FSTAT64) && !defined(__OSX_AVAILABLE_BUT_DEPRECATED)
620 typedef struct stat64 ext2fs_struct_stat;
621 #else
622 typedef struct stat ext2fs_struct_stat;
623 #endif
624
625 /*
626 * For ext2fs_close2() and ext2fs_flush2(), this flag allows you to
627 * avoid the fsync call.
628 */
629 #define EXT2_FLAG_FLUSH_NO_SYNC 1
630
631 /*
632 * function prototypes
633 */
634
635 /* 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)636 static inline int ext2fs_needs_large_file_feature(unsigned long long file_size)
637 {
638 return file_size >= 0x80000000ULL;
639 }
640
641 /* alloc.c */
642 extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode,
643 ext2fs_inode_bitmap map, ext2_ino_t *ret);
644 extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal,
645 ext2fs_block_bitmap map, blk_t *ret);
646 extern errcode_t ext2fs_new_block2(ext2_filsys fs, blk64_t goal,
647 ext2fs_block_bitmap map, blk64_t *ret);
648 extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start,
649 blk_t finish, int num,
650 ext2fs_block_bitmap map,
651 blk_t *ret);
652 extern errcode_t ext2fs_get_free_blocks2(ext2_filsys fs, blk64_t start,
653 blk64_t finish, int num,
654 ext2fs_block_bitmap map,
655 blk64_t *ret);
656 extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal,
657 char *block_buf, blk_t *ret);
658 extern errcode_t ext2fs_alloc_block2(ext2_filsys fs, blk64_t goal,
659 char *block_buf, blk64_t *ret);
660 extern void ext2fs_set_alloc_block_callback(ext2_filsys fs,
661 errcode_t (*func)(ext2_filsys fs,
662 blk64_t goal,
663 blk64_t *ret),
664 errcode_t (**old)(ext2_filsys fs,
665 blk64_t goal,
666 blk64_t *ret));
667
668 /* alloc_sb.c */
669 extern int ext2fs_reserve_super_and_bgd(ext2_filsys fs,
670 dgrp_t group,
671 ext2fs_block_bitmap bmap);
672 extern void ext2fs_set_block_alloc_stats_callback(ext2_filsys fs,
673 void (*func)(ext2_filsys fs,
674 blk64_t blk,
675 int inuse),
676 void (**old)(ext2_filsys fs,
677 blk64_t blk,
678 int inuse));
679
680 /* alloc_stats.c */
681 void ext2fs_inode_alloc_stats(ext2_filsys fs, ext2_ino_t ino, int inuse);
682 void ext2fs_inode_alloc_stats2(ext2_filsys fs, ext2_ino_t ino,
683 int inuse, int isdir);
684 void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse);
685 void ext2fs_block_alloc_stats2(ext2_filsys fs, blk64_t blk, int inuse);
686
687 /* alloc_tables.c */
688 extern errcode_t ext2fs_allocate_tables(ext2_filsys fs);
689 extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group,
690 ext2fs_block_bitmap bmap);
691
692 /* badblocks.c */
693 extern errcode_t ext2fs_u32_list_create(ext2_u32_list *ret, int size);
694 extern errcode_t ext2fs_u32_list_add(ext2_u32_list bb, __u32 blk);
695 extern int ext2fs_u32_list_find(ext2_u32_list bb, __u32 blk);
696 extern int ext2fs_u32_list_test(ext2_u32_list bb, blk_t blk);
697 extern errcode_t ext2fs_u32_list_iterate_begin(ext2_u32_list bb,
698 ext2_u32_iterate *ret);
699 extern int ext2fs_u32_list_iterate(ext2_u32_iterate iter, blk_t *blk);
700 extern void ext2fs_u32_list_iterate_end(ext2_u32_iterate iter);
701 extern errcode_t ext2fs_u32_copy(ext2_u32_list src, ext2_u32_list *dest);
702 extern int ext2fs_u32_list_equal(ext2_u32_list bb1, ext2_u32_list bb2);
703
704 extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret,
705 int size);
706 extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb,
707 blk_t blk);
708 extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb,
709 blk_t blk);
710 extern int ext2fs_u32_list_del(ext2_u32_list bb, __u32 blk);
711 extern void ext2fs_badblocks_list_del(ext2_u32_list bb, __u32 blk);
712 extern errcode_t
713 ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb,
714 ext2_badblocks_iterate *ret);
715 extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter,
716 blk_t *blk);
717 extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter);
718 extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src,
719 ext2_badblocks_list *dest);
720 extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1,
721 ext2_badblocks_list bb2);
722 extern int ext2fs_u32_list_count(ext2_u32_list bb);
723
724 /* bb_compat */
725 extern errcode_t badblocks_list_create(badblocks_list *ret, int size);
726 extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk);
727 extern int badblocks_list_test(badblocks_list bb, blk_t blk);
728 extern errcode_t badblocks_list_iterate_begin(badblocks_list bb,
729 badblocks_iterate *ret);
730 extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk);
731 extern void badblocks_list_iterate_end(badblocks_iterate iter);
732 extern void badblocks_list_free(badblocks_list bb);
733
734 /* bb_inode.c */
735 extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs,
736 ext2_badblocks_list bb_list);
737
738 /* bitmaps.c */
739 extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap);
740 extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap);
741 extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src,
742 ext2fs_generic_bitmap *dest);
743 extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs);
744 extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs);
745 extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs);
746 extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs);
747 extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs,
748 const char *descr,
749 ext2fs_block_bitmap *ret);
750 extern errcode_t ext2fs_allocate_subcluster_bitmap(ext2_filsys fs,
751 const char *descr,
752 ext2fs_block_bitmap *ret);
753 extern int ext2fs_get_bitmap_granularity(ext2fs_block_bitmap bitmap);
754 extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs,
755 const char *descr,
756 ext2fs_inode_bitmap *ret);
757 extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap,
758 ext2_ino_t end, ext2_ino_t *oend);
759 extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap,
760 blk_t end, blk_t *oend);
761 extern errcode_t ext2fs_fudge_block_bitmap_end2(ext2fs_block_bitmap bitmap,
762 blk64_t end, blk64_t *oend);
763 extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap);
764 extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap);
765 extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs);
766 extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs);
767 extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end,
768 ext2fs_inode_bitmap bmap);
769 extern errcode_t ext2fs_resize_inode_bitmap2(__u64 new_end,
770 __u64 new_real_end,
771 ext2fs_inode_bitmap bmap);
772 extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end,
773 ext2fs_block_bitmap bmap);
774 extern errcode_t ext2fs_resize_block_bitmap2(__u64 new_end,
775 __u64 new_real_end,
776 ext2fs_block_bitmap bmap);
777 extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1,
778 ext2fs_block_bitmap bm2);
779 extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1,
780 ext2fs_inode_bitmap bm2);
781 extern errcode_t ext2fs_set_inode_bitmap_range(ext2fs_inode_bitmap bmap,
782 ext2_ino_t start, unsigned int num,
783 void *in);
784 extern errcode_t ext2fs_set_inode_bitmap_range2(ext2fs_inode_bitmap bmap,
785 __u64 start, size_t num,
786 void *in);
787 extern errcode_t ext2fs_get_inode_bitmap_range(ext2fs_inode_bitmap bmap,
788 ext2_ino_t start, unsigned int num,
789 void *out);
790 extern errcode_t ext2fs_get_inode_bitmap_range2(ext2fs_inode_bitmap bmap,
791 __u64 start, size_t num,
792 void *out);
793 extern errcode_t ext2fs_set_block_bitmap_range(ext2fs_block_bitmap bmap,
794 blk_t start, unsigned int num,
795 void *in);
796 extern errcode_t ext2fs_set_block_bitmap_range2(ext2fs_block_bitmap bmap,
797 blk64_t start, size_t num,
798 void *in);
799 extern errcode_t ext2fs_get_block_bitmap_range(ext2fs_block_bitmap bmap,
800 blk_t start, unsigned int num,
801 void *out);
802 extern errcode_t ext2fs_get_block_bitmap_range2(ext2fs_block_bitmap bmap,
803 blk64_t start, size_t num,
804 void *out);
805
806 /* blknum.c */
807 extern dgrp_t ext2fs_group_of_blk2(ext2_filsys fs, blk64_t);
808 extern blk64_t ext2fs_group_first_block2(ext2_filsys fs, dgrp_t group);
809 extern blk64_t ext2fs_group_last_block2(ext2_filsys fs, dgrp_t group);
810 extern int ext2fs_group_blocks_count(ext2_filsys fs, dgrp_t group);
811 extern blk64_t ext2fs_inode_data_blocks2(ext2_filsys fs,
812 struct ext2_inode *inode);
813 extern blk64_t ext2fs_inode_i_blocks(ext2_filsys fs,
814 struct ext2_inode *inode);
815 extern blk64_t ext2fs_blocks_count(struct ext2_super_block *super);
816 extern void ext2fs_blocks_count_set(struct ext2_super_block *super,
817 blk64_t blk);
818 extern void ext2fs_blocks_count_add(struct ext2_super_block *super,
819 blk64_t blk);
820 extern blk64_t ext2fs_r_blocks_count(struct ext2_super_block *super);
821 extern void ext2fs_r_blocks_count_set(struct ext2_super_block *super,
822 blk64_t blk);
823 extern void ext2fs_r_blocks_count_add(struct ext2_super_block *super,
824 blk64_t blk);
825 extern blk64_t ext2fs_free_blocks_count(struct ext2_super_block *super);
826 extern void ext2fs_free_blocks_count_set(struct ext2_super_block *super,
827 blk64_t blk);
828 extern void ext2fs_free_blocks_count_add(struct ext2_super_block *super,
829 blk64_t blk);
830 /* Block group descriptor accessor functions */
831 extern struct ext2_group_desc *ext2fs_group_desc(ext2_filsys fs,
832 struct opaque_ext2_group_desc *gdp,
833 dgrp_t group);
834 extern blk64_t ext2fs_block_bitmap_loc(ext2_filsys fs, dgrp_t group);
835 extern void ext2fs_block_bitmap_loc_set(ext2_filsys fs, dgrp_t group,
836 blk64_t blk);
837 extern blk64_t ext2fs_inode_bitmap_loc(ext2_filsys fs, dgrp_t group);
838 extern void ext2fs_inode_bitmap_loc_set(ext2_filsys fs, dgrp_t group,
839 blk64_t blk);
840 extern blk64_t ext2fs_inode_table_loc(ext2_filsys fs, dgrp_t group);
841 extern void ext2fs_inode_table_loc_set(ext2_filsys fs, dgrp_t group,
842 blk64_t blk);
843 extern __u32 ext2fs_bg_free_blocks_count(ext2_filsys fs, dgrp_t group);
844 extern void ext2fs_bg_free_blocks_count_set(ext2_filsys fs, dgrp_t group,
845 __u32 n);
846 extern __u32 ext2fs_bg_free_inodes_count(ext2_filsys fs, dgrp_t group);
847 extern void ext2fs_bg_free_inodes_count_set(ext2_filsys fs, dgrp_t group,
848 __u32 n);
849 extern __u32 ext2fs_bg_used_dirs_count(ext2_filsys fs, dgrp_t group);
850 extern void ext2fs_bg_used_dirs_count_set(ext2_filsys fs, dgrp_t group,
851 __u32 n);
852 extern __u32 ext2fs_bg_itable_unused(ext2_filsys fs, dgrp_t group);
853 extern void ext2fs_bg_itable_unused_set(ext2_filsys fs, dgrp_t group,
854 __u32 n);
855 extern __u16 ext2fs_bg_flags(ext2_filsys fs, dgrp_t group);
856 extern void ext2fs_bg_flags_zap(ext2_filsys fs, dgrp_t group);
857 extern int ext2fs_bg_flags_test(ext2_filsys fs, dgrp_t group, __u16 bg_flag);
858 extern void ext2fs_bg_flags_set(ext2_filsys fs, dgrp_t group, __u16 bg_flags);
859 extern void ext2fs_bg_flags_clear(ext2_filsys fs, dgrp_t group, __u16 bg_flags);
860 extern __u16 ext2fs_bg_checksum(ext2_filsys fs, dgrp_t group);
861 extern void ext2fs_bg_checksum_set(ext2_filsys fs, dgrp_t group, __u16 checksum);
862 extern blk64_t ext2fs_file_acl_block(ext2_filsys fs,
863 const struct ext2_inode *inode);
864 extern void ext2fs_file_acl_block_set(ext2_filsys fs,
865 struct ext2_inode *inode, blk64_t blk);
866
867 /* block.c */
868 extern errcode_t ext2fs_block_iterate(ext2_filsys fs,
869 ext2_ino_t ino,
870 int flags,
871 char *block_buf,
872 int (*func)(ext2_filsys fs,
873 blk_t *blocknr,
874 int blockcnt,
875 void *priv_data),
876 void *priv_data);
877 errcode_t ext2fs_block_iterate2(ext2_filsys fs,
878 ext2_ino_t ino,
879 int flags,
880 char *block_buf,
881 int (*func)(ext2_filsys fs,
882 blk_t *blocknr,
883 e2_blkcnt_t blockcnt,
884 blk_t ref_blk,
885 int ref_offset,
886 void *priv_data),
887 void *priv_data);
888 errcode_t ext2fs_block_iterate3(ext2_filsys fs,
889 ext2_ino_t ino,
890 int flags,
891 char *block_buf,
892 int (*func)(ext2_filsys fs,
893 blk64_t *blocknr,
894 e2_blkcnt_t blockcnt,
895 blk64_t ref_blk,
896 int ref_offset,
897 void *priv_data),
898 void *priv_data);
899
900 /* bmap.c */
901 extern errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino,
902 struct ext2_inode *inode,
903 char *block_buf, int bmap_flags,
904 blk_t block, blk_t *phys_blk);
905 extern errcode_t ext2fs_bmap2(ext2_filsys fs, ext2_ino_t ino,
906 struct ext2_inode *inode,
907 char *block_buf, int bmap_flags, blk64_t block,
908 int *ret_flags, blk64_t *phys_blk);
909 errcode_t ext2fs_map_cluster_block(ext2_filsys fs, ext2_ino_t ino,
910 struct ext2_inode *inode, blk64_t lblk,
911 blk64_t *pblk);
912
913 #if 0
914 /* bmove.c */
915 extern errcode_t ext2fs_move_blocks(ext2_filsys fs,
916 ext2fs_block_bitmap reserve,
917 ext2fs_block_bitmap alloc_map,
918 int flags);
919 #endif
920
921 /* check_desc.c */
922 extern errcode_t ext2fs_check_desc(ext2_filsys fs);
923
924 /* closefs.c */
925 extern errcode_t ext2fs_close(ext2_filsys fs);
926 extern errcode_t ext2fs_close2(ext2_filsys fs, int flags);
927 extern errcode_t ext2fs_flush(ext2_filsys fs);
928 extern errcode_t ext2fs_flush2(ext2_filsys fs, int flags);
929 extern int ext2fs_bg_has_super(ext2_filsys fs, dgrp_t group_block);
930 extern errcode_t ext2fs_super_and_bgd_loc2(ext2_filsys fs,
931 dgrp_t group,
932 blk64_t *ret_super_blk,
933 blk64_t *ret_old_desc_blk,
934 blk64_t *ret_new_desc_blk,
935 blk_t *ret_used_blks);
936 extern int ext2fs_super_and_bgd_loc(ext2_filsys fs,
937 dgrp_t group,
938 blk_t *ret_super_blk,
939 blk_t *ret_old_desc_blk,
940 blk_t *ret_new_desc_blk,
941 int *ret_meta_bg);
942 extern void ext2fs_update_dynamic_rev(ext2_filsys fs);
943
944 /* crc32c.c */
945 extern __u32 ext2fs_crc32c_be(__u32 crc, unsigned char const *p, size_t len);
946 extern __u32 ext2fs_crc32c_le(__u32 crc, unsigned char const *p, size_t len);
947
948 /* csum.c */
949 extern void ext2fs_group_desc_csum_set(ext2_filsys fs, dgrp_t group);
950 extern int ext2fs_group_desc_csum_verify(ext2_filsys fs, dgrp_t group);
951 extern errcode_t ext2fs_set_gdt_csum(ext2_filsys fs);
952 extern __u16 ext2fs_group_desc_csum(ext2_filsys fs, dgrp_t group);
953
954 /* dblist.c */
955
956 extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs);
957 extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist);
958 extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ext2_ino_t ino,
959 blk_t blk, int blockcnt);
960 extern errcode_t ext2fs_add_dir_block2(ext2_dblist dblist, ext2_ino_t ino,
961 blk64_t blk, e2_blkcnt_t blockcnt);
962 extern void ext2fs_dblist_sort(ext2_dblist dblist,
963 EXT2_QSORT_TYPE (*sortfunc)(const void *,
964 const void *));
965 extern void ext2fs_dblist_sort2(ext2_dblist dblist,
966 EXT2_QSORT_TYPE (*sortfunc)(const void *,
967 const void *));
968 extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist,
969 int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info,
970 void *priv_data),
971 void *priv_data);
972 extern errcode_t ext2fs_dblist_iterate2(ext2_dblist dblist,
973 int (*func)(ext2_filsys fs, struct ext2_db_entry2 *db_info,
974 void *priv_data),
975 void *priv_data);
976 extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ext2_ino_t ino,
977 blk_t blk, int blockcnt);
978 extern errcode_t ext2fs_set_dir_block2(ext2_dblist dblist, ext2_ino_t ino,
979 blk64_t blk, e2_blkcnt_t blockcnt);
980 extern errcode_t ext2fs_copy_dblist(ext2_dblist src,
981 ext2_dblist *dest);
982 extern int ext2fs_dblist_count(ext2_dblist dblist);
983 extern blk64_t ext2fs_dblist_count2(ext2_dblist dblist);
984 extern errcode_t ext2fs_dblist_get_last(ext2_dblist dblist,
985 struct ext2_db_entry **entry);
986 extern errcode_t ext2fs_dblist_get_last2(ext2_dblist dblist,
987 struct ext2_db_entry2 **entry);
988 extern errcode_t ext2fs_dblist_drop_last(ext2_dblist dblist);
989
990 /* dblist_dir.c */
991 extern errcode_t
992 ext2fs_dblist_dir_iterate(ext2_dblist dblist,
993 int flags,
994 char *block_buf,
995 int (*func)(ext2_ino_t dir,
996 int entry,
997 struct ext2_dir_entry *dirent,
998 int offset,
999 int blocksize,
1000 char *buf,
1001 void *priv_data),
1002 void *priv_data);
1003
1004 /* dirblock.c */
1005 extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block,
1006 void *buf);
1007 extern errcode_t ext2fs_read_dir_block2(ext2_filsys fs, blk_t block,
1008 void *buf, int flags);
1009 extern errcode_t ext2fs_read_dir_block3(ext2_filsys fs, blk64_t block,
1010 void *buf, int flags);
1011 extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block,
1012 void *buf);
1013 extern errcode_t ext2fs_write_dir_block2(ext2_filsys fs, blk_t block,
1014 void *buf, int flags);
1015 extern errcode_t ext2fs_write_dir_block3(ext2_filsys fs, blk64_t block,
1016 void *buf, int flags);
1017
1018 /* dirhash.c */
1019 extern errcode_t ext2fs_dirhash(int version, const char *name, int len,
1020 const __u32 *seed,
1021 ext2_dirhash_t *ret_hash,
1022 ext2_dirhash_t *ret_minor_hash);
1023
1024
1025 /* dir_iterate.c */
1026 extern errcode_t ext2fs_get_rec_len(ext2_filsys fs,
1027 struct ext2_dir_entry *dirent,
1028 unsigned int *rec_len);
1029 extern errcode_t ext2fs_set_rec_len(ext2_filsys fs,
1030 unsigned int len,
1031 struct ext2_dir_entry *dirent);
1032 extern errcode_t ext2fs_dir_iterate(ext2_filsys fs,
1033 ext2_ino_t dir,
1034 int flags,
1035 char *block_buf,
1036 int (*func)(struct ext2_dir_entry *dirent,
1037 int offset,
1038 int blocksize,
1039 char *buf,
1040 void *priv_data),
1041 void *priv_data);
1042 extern errcode_t ext2fs_dir_iterate2(ext2_filsys fs,
1043 ext2_ino_t dir,
1044 int flags,
1045 char *block_buf,
1046 int (*func)(ext2_ino_t dir,
1047 int entry,
1048 struct ext2_dir_entry *dirent,
1049 int offset,
1050 int blocksize,
1051 char *buf,
1052 void *priv_data),
1053 void *priv_data);
1054
1055 /* dupfs.c */
1056 extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest);
1057
1058 /* expanddir.c */
1059 extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir);
1060
1061 /* ext_attr.c */
1062 extern __u32 ext2fs_ext_attr_hash_entry(struct ext2_ext_attr_entry *entry,
1063 void *data);
1064 extern errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf);
1065 extern errcode_t ext2fs_read_ext_attr2(ext2_filsys fs, blk64_t block,
1066 void *buf);
1067 extern errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block,
1068 void *buf);
1069 extern errcode_t ext2fs_write_ext_attr2(ext2_filsys fs, blk64_t block,
1070 void *buf);
1071 extern errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk,
1072 char *block_buf,
1073 int adjust, __u32 *newcount);
1074 extern errcode_t ext2fs_adjust_ea_refcount2(ext2_filsys fs, blk64_t blk,
1075 char *block_buf,
1076 int adjust, __u32 *newcount);
1077
1078 /* extent.c */
1079 extern errcode_t ext2fs_extent_header_verify(void *ptr, int size);
1080 extern errcode_t ext2fs_extent_open(ext2_filsys fs, ext2_ino_t ino,
1081 ext2_extent_handle_t *handle);
1082 extern errcode_t ext2fs_extent_open2(ext2_filsys fs, ext2_ino_t ino,
1083 struct ext2_inode *inode,
1084 ext2_extent_handle_t *ret_handle);
1085 extern void ext2fs_extent_free(ext2_extent_handle_t handle);
1086 extern errcode_t ext2fs_extent_get(ext2_extent_handle_t handle,
1087 int flags, struct ext2fs_extent *extent);
1088 extern errcode_t ext2fs_extent_node_split(ext2_extent_handle_t handle);
1089 extern errcode_t ext2fs_extent_replace(ext2_extent_handle_t handle, int flags,
1090 struct ext2fs_extent *extent);
1091 extern errcode_t ext2fs_extent_insert(ext2_extent_handle_t handle, int flags,
1092 struct ext2fs_extent *extent);
1093 extern errcode_t ext2fs_extent_set_bmap(ext2_extent_handle_t handle,
1094 blk64_t logical, blk64_t physical,
1095 int flags);
1096 extern errcode_t ext2fs_extent_delete(ext2_extent_handle_t handle, int flags);
1097 extern errcode_t ext2fs_extent_get_info(ext2_extent_handle_t handle,
1098 struct ext2_extent_info *info);
1099 extern errcode_t ext2fs_extent_goto(ext2_extent_handle_t handle,
1100 blk64_t blk);
1101 extern errcode_t ext2fs_extent_goto2(ext2_extent_handle_t handle,
1102 int leaf_level, blk64_t blk);
1103 extern errcode_t ext2fs_extent_fix_parents(ext2_extent_handle_t handle);
1104
1105 /* fileio.c */
1106 extern errcode_t ext2fs_file_open2(ext2_filsys fs, ext2_ino_t ino,
1107 struct ext2_inode *inode,
1108 int flags, ext2_file_t *ret);
1109 extern errcode_t ext2fs_file_open(ext2_filsys fs, ext2_ino_t ino,
1110 int flags, ext2_file_t *ret);
1111 extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file);
1112 struct ext2_inode *ext2fs_file_get_inode(ext2_file_t file);
1113 extern ext2_ino_t ext2fs_file_get_inode_num(ext2_file_t file);
1114 extern errcode_t ext2fs_file_close(ext2_file_t file);
1115 extern errcode_t ext2fs_file_flush(ext2_file_t file);
1116 extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf,
1117 unsigned int wanted, unsigned int *got);
1118 extern errcode_t ext2fs_file_write(ext2_file_t file, const void *buf,
1119 unsigned int nbytes, unsigned int *written);
1120 extern errcode_t ext2fs_file_llseek(ext2_file_t file, __u64 offset,
1121 int whence, __u64 *ret_pos);
1122 extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset,
1123 int whence, ext2_off_t *ret_pos);
1124 errcode_t ext2fs_file_get_lsize(ext2_file_t file, __u64 *ret_size);
1125 extern ext2_off_t ext2fs_file_get_size(ext2_file_t file);
1126 extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size);
1127 extern errcode_t ext2fs_file_set_size2(ext2_file_t file, ext2_off64_t size);
1128
1129 /* finddev.c */
1130 extern char *ext2fs_find_block_device(dev_t device);
1131
1132 /* flushb.c */
1133 extern errcode_t ext2fs_sync_device(int fd, int flushb);
1134
1135 /* freefs.c */
1136 extern void ext2fs_free(ext2_filsys fs);
1137 extern void ext2fs_free_dblist(ext2_dblist dblist);
1138 extern void ext2fs_badblocks_list_free(ext2_badblocks_list bb);
1139 extern void ext2fs_u32_list_free(ext2_u32_list bb);
1140
1141 /* gen_bitmap.c */
1142 extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap);
1143 extern errcode_t ext2fs_make_generic_bitmap(errcode_t magic, ext2_filsys fs,
1144 __u32 start, __u32 end,
1145 __u32 real_end,
1146 const char *descr, char *init_map,
1147 ext2fs_generic_bitmap *ret);
1148 extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start,
1149 __u32 end,
1150 __u32 real_end,
1151 const char *descr,
1152 ext2fs_generic_bitmap *ret);
1153 extern errcode_t ext2fs_copy_generic_bitmap(ext2fs_generic_bitmap src,
1154 ext2fs_generic_bitmap *dest);
1155 extern void ext2fs_clear_generic_bitmap(ext2fs_generic_bitmap bitmap);
1156 extern errcode_t ext2fs_fudge_generic_bitmap_end(ext2fs_inode_bitmap bitmap,
1157 errcode_t magic,
1158 errcode_t neq,
1159 ext2_ino_t end,
1160 ext2_ino_t *oend);
1161 extern void ext2fs_set_generic_bitmap_padding(ext2fs_generic_bitmap map);
1162 extern errcode_t ext2fs_resize_generic_bitmap(errcode_t magic,
1163 __u32 new_end,
1164 __u32 new_real_end,
1165 ext2fs_generic_bitmap bmap);
1166 extern errcode_t ext2fs_compare_generic_bitmap(errcode_t magic, errcode_t neq,
1167 ext2fs_generic_bitmap bm1,
1168 ext2fs_generic_bitmap bm2);
1169 extern errcode_t ext2fs_get_generic_bitmap_range(ext2fs_generic_bitmap bmap,
1170 errcode_t magic,
1171 __u32 start, __u32 num,
1172 void *out);
1173 extern errcode_t ext2fs_set_generic_bitmap_range(ext2fs_generic_bitmap bmap,
1174 errcode_t magic,
1175 __u32 start, __u32 num,
1176 void *in);
1177 extern errcode_t ext2fs_find_first_zero_generic_bitmap(ext2fs_generic_bitmap bitmap,
1178 __u32 start, __u32 end,
1179 __u32 *out);
1180
1181 /* gen_bitmap64.c */
1182
1183 /* Generate and print bitmap usage statistics */
1184 #define BMAP_STATS
1185
1186 void ext2fs_free_generic_bmap(ext2fs_generic_bitmap bmap);
1187 errcode_t ext2fs_alloc_generic_bmap(ext2_filsys fs, errcode_t magic,
1188 int type, __u64 start, __u64 end,
1189 __u64 real_end,
1190 const char *descr,
1191 ext2fs_generic_bitmap *ret);
1192 errcode_t ext2fs_copy_generic_bmap(ext2fs_generic_bitmap src,
1193 ext2fs_generic_bitmap *dest);
1194 void ext2fs_clear_generic_bmap(ext2fs_generic_bitmap bitmap);
1195 errcode_t ext2fs_fudge_generic_bmap_end(ext2fs_generic_bitmap bitmap,
1196 errcode_t neq,
1197 __u64 end, __u64 *oend);
1198 void ext2fs_set_generic_bmap_padding(ext2fs_generic_bitmap bmap);
1199 errcode_t ext2fs_resize_generic_bmap(ext2fs_generic_bitmap bmap,
1200 __u64 new_end,
1201 __u64 new_real_end);
1202 errcode_t ext2fs_compare_generic_bmap(errcode_t neq,
1203 ext2fs_generic_bitmap bm1,
1204 ext2fs_generic_bitmap bm2);
1205 errcode_t ext2fs_get_generic_bmap_range(ext2fs_generic_bitmap bmap,
1206 __u64 start, unsigned int num,
1207 void *out);
1208 errcode_t ext2fs_set_generic_bmap_range(ext2fs_generic_bitmap bmap,
1209 __u64 start, unsigned int num,
1210 void *in);
1211 errcode_t ext2fs_convert_subcluster_bitmap(ext2_filsys fs,
1212 ext2fs_block_bitmap *bitmap);
1213
1214 /* getsize.c */
1215 extern errcode_t ext2fs_get_device_size(const char *file, int blocksize,
1216 blk_t *retblocks);
1217 extern errcode_t ext2fs_get_device_size2(const char *file, int blocksize,
1218 blk64_t *retblocks);
1219
1220 /* getsectsize.c */
1221 extern int ext2fs_get_dio_alignment(int fd);
1222 errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize);
1223 errcode_t ext2fs_get_device_phys_sectsize(const char *file, int *sectsize);
1224
1225 /* i_block.c */
1226 errcode_t ext2fs_iblk_add_blocks(ext2_filsys fs, struct ext2_inode *inode,
1227 blk64_t num_blocks);
1228 errcode_t ext2fs_iblk_sub_blocks(ext2_filsys fs, struct ext2_inode *inode,
1229 blk64_t num_blocks);
1230 errcode_t ext2fs_iblk_set(ext2_filsys fs, struct ext2_inode *inode, blk64_t b);
1231
1232 /* imager.c */
1233 extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags);
1234 extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags);
1235 extern errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd, int flags);
1236 extern errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd, int flags);
1237 extern errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags);
1238 extern errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags);
1239
1240 /* ind_block.c */
1241 errcode_t ext2fs_read_ind_block(ext2_filsys fs, blk_t blk, void *buf);
1242 errcode_t ext2fs_write_ind_block(ext2_filsys fs, blk_t blk, void *buf);
1243
1244 /* initialize.c */
1245 extern errcode_t ext2fs_initialize(const char *name, int flags,
1246 struct ext2_super_block *param,
1247 io_manager manager, ext2_filsys *ret_fs);
1248
1249 /* icount.c */
1250 extern void ext2fs_free_icount(ext2_icount_t icount);
1251 extern errcode_t ext2fs_create_icount_tdb(ext2_filsys fs, char *tdb_dir,
1252 int flags, ext2_icount_t *ret);
1253 extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags,
1254 unsigned int size,
1255 ext2_icount_t hint, ext2_icount_t *ret);
1256 extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags,
1257 unsigned int size,
1258 ext2_icount_t *ret);
1259 extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ext2_ino_t ino,
1260 __u16 *ret);
1261 extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ext2_ino_t ino,
1262 __u16 *ret);
1263 extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ext2_ino_t ino,
1264 __u16 *ret);
1265 extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ext2_ino_t ino,
1266 __u16 count);
1267 extern ext2_ino_t ext2fs_get_icount_size(ext2_icount_t icount);
1268 errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *);
1269
1270 /* inline.c */
1271
1272 extern errcode_t ext2fs_get_memalign(unsigned long size,
1273 unsigned long align, void *ptr);
1274
1275 /* inode.c */
1276 extern errcode_t ext2fs_flush_icache(ext2_filsys fs);
1277 extern errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan,
1278 ext2_ino_t *ino,
1279 struct ext2_inode *inode,
1280 int bufsize);
1281 extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks,
1282 ext2_inode_scan *ret_scan);
1283 extern void ext2fs_close_inode_scan(ext2_inode_scan scan);
1284 extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino,
1285 struct ext2_inode *inode);
1286 extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan,
1287 int group);
1288 extern void ext2fs_set_inode_callback
1289 (ext2_inode_scan scan,
1290 errcode_t (*done_group)(ext2_filsys fs,
1291 ext2_inode_scan scan,
1292 dgrp_t group,
1293 void * priv_data),
1294 void *done_group_data);
1295 extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags,
1296 int clear_flags);
1297 extern errcode_t ext2fs_read_inode_full(ext2_filsys fs, ext2_ino_t ino,
1298 struct ext2_inode * inode,
1299 int bufsize);
1300 extern errcode_t ext2fs_read_inode (ext2_filsys fs, ext2_ino_t ino,
1301 struct ext2_inode * inode);
1302 extern errcode_t ext2fs_write_inode_full(ext2_filsys fs, ext2_ino_t ino,
1303 struct ext2_inode * inode,
1304 int bufsize);
1305 extern errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino,
1306 struct ext2_inode * inode);
1307 extern errcode_t ext2fs_write_new_inode(ext2_filsys fs, ext2_ino_t ino,
1308 struct ext2_inode * inode);
1309 extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks);
1310 extern errcode_t ext2fs_check_directory(ext2_filsys fs, ext2_ino_t ino);
1311
1312 /* inode_io.c */
1313 extern io_manager inode_io_manager;
1314 extern errcode_t ext2fs_inode_io_intern(ext2_filsys fs, ext2_ino_t ino,
1315 char **name);
1316 extern errcode_t ext2fs_inode_io_intern2(ext2_filsys fs, ext2_ino_t ino,
1317 struct ext2_inode *inode,
1318 char **name);
1319
1320 /* ismounted.c */
1321 extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags);
1322 extern errcode_t ext2fs_check_mount_point(const char *device, int *mount_flags,
1323 char *mtpt, int mtlen);
1324
1325 /* punch.c */
1326 /*
1327 * NOTE: This function removes from an inode the blocks "start", "end", and
1328 * every block in between.
1329 */
1330 extern errcode_t ext2fs_punch(ext2_filsys fs, ext2_ino_t ino,
1331 struct ext2_inode *inode,
1332 char *block_buf, blk64_t start,
1333 blk64_t end);
1334
1335 /* namei.c */
1336 extern errcode_t ext2fs_lookup(ext2_filsys fs, ext2_ino_t dir, const char *name,
1337 int namelen, char *buf, ext2_ino_t *inode);
1338 extern errcode_t ext2fs_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
1339 const char *name, ext2_ino_t *inode);
1340 errcode_t ext2fs_namei_follow(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
1341 const char *name, ext2_ino_t *inode);
1342 extern errcode_t ext2fs_follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
1343 ext2_ino_t inode, ext2_ino_t *res_inode);
1344
1345 /* native.c */
1346 int ext2fs_native_flag(void);
1347
1348 /* newdir.c */
1349 extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino,
1350 ext2_ino_t parent_ino, char **block);
1351
1352 /* mkdir.c */
1353 extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum,
1354 const char *name);
1355
1356 /* mkjournal.c */
1357 extern errcode_t ext2fs_zero_blocks(ext2_filsys fs, blk_t blk, int num,
1358 blk_t *ret_blk, int *ret_count);
1359 extern errcode_t ext2fs_zero_blocks2(ext2_filsys fs, blk64_t blk, int num,
1360 blk64_t *ret_blk, int *ret_count);
1361 extern errcode_t ext2fs_create_journal_superblock(ext2_filsys fs,
1362 __u32 num_blocks, int flags,
1363 char **ret_jsb);
1364 extern errcode_t ext2fs_add_journal_device(ext2_filsys fs,
1365 ext2_filsys journal_dev);
1366 extern errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t num_blocks,
1367 int flags);
1368 extern int ext2fs_default_journal_size(__u64 num_blocks);
1369
1370 /* openfs.c */
1371 extern errcode_t ext2fs_open(const char *name, int flags, int superblock,
1372 unsigned int block_size, io_manager manager,
1373 ext2_filsys *ret_fs);
1374 extern errcode_t ext2fs_open2(const char *name, const char *io_options,
1375 int flags, int superblock,
1376 unsigned int block_size, io_manager manager,
1377 ext2_filsys *ret_fs);
1378 extern blk64_t ext2fs_descriptor_block_loc2(ext2_filsys fs,
1379 blk64_t group_block, dgrp_t i);
1380 extern blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block,
1381 dgrp_t i);
1382 errcode_t ext2fs_get_data_io(ext2_filsys fs, io_channel *old_io);
1383 errcode_t ext2fs_set_data_io(ext2_filsys fs, io_channel new_io);
1384 errcode_t ext2fs_rewrite_to_io(ext2_filsys fs, io_channel new_io);
1385
1386 /* get_pathname.c */
1387 extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino,
1388 char **name);
1389
1390 /* link.c */
1391 errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name,
1392 ext2_ino_t ino, int flags);
1393 errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir, const char *name,
1394 ext2_ino_t ino, int flags);
1395
1396 /* symlink.c */
1397 errcode_t ext2fs_symlink(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t ino,
1398 const char *name, char *target);
1399
1400 /* mmp.c */
1401 errcode_t ext2fs_mmp_read(ext2_filsys fs, blk64_t mmp_blk, void *buf);
1402 errcode_t ext2fs_mmp_write(ext2_filsys fs, blk64_t mmp_blk, void *buf);
1403 errcode_t ext2fs_mmp_clear(ext2_filsys fs);
1404 errcode_t ext2fs_mmp_init(ext2_filsys fs);
1405 errcode_t ext2fs_mmp_start(ext2_filsys fs);
1406 errcode_t ext2fs_mmp_update(ext2_filsys fs);
1407 errcode_t ext2fs_mmp_stop(ext2_filsys fs);
1408 unsigned ext2fs_mmp_new_seq(void);
1409
1410 /* read_bb.c */
1411 extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs,
1412 ext2_badblocks_list *bb_list);
1413
1414 /* read_bb_file.c */
1415 extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f,
1416 ext2_badblocks_list *bb_list,
1417 void *priv_data,
1418 void (*invalid)(ext2_filsys fs,
1419 blk_t blk,
1420 char *badstr,
1421 void *priv_data));
1422 extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f,
1423 ext2_badblocks_list *bb_list,
1424 void (*invalid)(ext2_filsys fs,
1425 blk_t blk));
1426
1427 /* res_gdt.c */
1428 extern errcode_t ext2fs_create_resize_inode(ext2_filsys fs);
1429
1430 /* swapfs.c */
1431 extern void ext2fs_swap_ext_attr(char *to, char *from, int bufsize,
1432 int has_header);
1433 extern void ext2fs_swap_ext_attr_header(struct ext2_ext_attr_header *to_header,
1434 struct ext2_ext_attr_header *from_hdr);
1435 extern void ext2fs_swap_ext_attr_entry(struct ext2_ext_attr_entry *to_entry,
1436 struct ext2_ext_attr_entry *from_entry);
1437 extern void ext2fs_swap_super(struct ext2_super_block * super);
1438 extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp);
1439 extern void ext2fs_swap_group_desc2(ext2_filsys, struct ext2_group_desc *gdp);
1440 extern void ext2fs_swap_inode_full(ext2_filsys fs, struct ext2_inode_large *t,
1441 struct ext2_inode_large *f, int hostorder,
1442 int bufsize);
1443 extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t,
1444 struct ext2_inode *f, int hostorder);
1445 extern void ext2fs_swap_mmp(struct mmp_struct *mmp);
1446
1447 /* unix_io.c */
1448 extern int ext2fs_open_file(const char *pathname, int flags, mode_t mode);
1449 extern int ext2fs_stat(const char *path, ext2fs_struct_stat *buf);
1450 extern int ext2fs_fstat(int fd, ext2fs_struct_stat *buf);
1451
1452 /* valid_blk.c */
1453 extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode);
1454 extern int ext2fs_inode_has_valid_blocks2(ext2_filsys fs,
1455 struct ext2_inode *inode);
1456
1457 /* version.c */
1458 extern int ext2fs_parse_version_string(const char *ver_string);
1459 extern int ext2fs_get_library_version(const char **ver_string,
1460 const char **date_string);
1461
1462 /* write_bb_file.c */
1463 extern errcode_t ext2fs_write_bb_FILE(ext2_badblocks_list bb_list,
1464 unsigned int flags,
1465 FILE *f);
1466
1467
1468 /* inline functions */
1469 #ifdef NO_INLINE_FUNCS
1470 extern errcode_t ext2fs_get_mem(unsigned long size, void *ptr);
1471 extern errcode_t ext2fs_get_memzero(unsigned long size, void *ptr);
1472 extern errcode_t ext2fs_get_array(unsigned long count,
1473 unsigned long size, void *ptr);
1474 extern errcode_t ext2fs_get_arrayzero(unsigned long count,
1475 unsigned long size, void *ptr);
1476 extern errcode_t ext2fs_free_mem(void *ptr);
1477 extern errcode_t ext2fs_resize_mem(unsigned long old_size,
1478 unsigned long size, void *ptr);
1479 extern void ext2fs_mark_super_dirty(ext2_filsys fs);
1480 extern void ext2fs_mark_changed(ext2_filsys fs);
1481 extern int ext2fs_test_changed(ext2_filsys fs);
1482 extern void ext2fs_mark_valid(ext2_filsys fs);
1483 extern void ext2fs_unmark_valid(ext2_filsys fs);
1484 extern int ext2fs_test_valid(ext2_filsys fs);
1485 extern void ext2fs_mark_ib_dirty(ext2_filsys fs);
1486 extern void ext2fs_mark_bb_dirty(ext2_filsys fs);
1487 extern int ext2fs_test_ib_dirty(ext2_filsys fs);
1488 extern int ext2fs_test_bb_dirty(ext2_filsys fs);
1489 extern dgrp_t ext2fs_group_of_blk(ext2_filsys fs, blk_t blk);
1490 extern dgrp_t ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino);
1491 extern blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group);
1492 extern blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group);
1493 extern blk_t ext2fs_inode_data_blocks(ext2_filsys fs,
1494 struct ext2_inode *inode);
1495 extern unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b);
1496 extern __u64 ext2fs_div64_ceil(__u64 a, __u64 b);
1497 #endif
1498
1499 /*
1500 * The actual inlined functions definitions themselves...
1501 *
1502 * If NO_INLINE_FUNCS is defined, then we won't try to do inline
1503 * functions at all!
1504 */
1505 #if (defined(INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS))
1506 #ifdef INCLUDE_INLINE_FUNCS
1507 #define _INLINE_ extern
1508 #else
1509 #if (__STDC_VERSION__ >= 199901L)
1510 #define _INLINE_ inline
1511 #else
1512 #ifdef __GNUC__
1513 #define _INLINE_ extern __inline__
1514 #else /* For Watcom C */
1515 #define _INLINE_ extern inline
1516 #endif /* __GNUC__ */
1517 #endif /* __STDC_VERSION__ >= 199901L */
1518 #endif
1519
1520 #ifndef EXT2_CUSTOM_MEMORY_ROUTINES
1521 #include <string.h>
1522 /*
1523 * Allocate memory. The 'ptr' arg must point to a pointer.
1524 */
ext2fs_get_mem(unsigned long size,void * ptr)1525 _INLINE_ errcode_t ext2fs_get_mem(unsigned long size, void *ptr)
1526 {
1527 void *pp;
1528
1529 pp = malloc(size);
1530 if (!pp)
1531 return EXT2_ET_NO_MEMORY;
1532 memcpy(ptr, &pp, sizeof (pp));
1533 return 0;
1534 }
1535
ext2fs_get_memzero(unsigned long size,void * ptr)1536 _INLINE_ errcode_t ext2fs_get_memzero(unsigned long size, void *ptr)
1537 {
1538 void *pp;
1539
1540 pp = malloc(size);
1541 if (!pp)
1542 return EXT2_ET_NO_MEMORY;
1543 memset(pp, 0, size);
1544 memcpy(ptr, &pp, sizeof(pp));
1545 return 0;
1546 }
1547
ext2fs_get_array(unsigned long count,unsigned long size,void * ptr)1548 _INLINE_ errcode_t ext2fs_get_array(unsigned long count, unsigned long size, void *ptr)
1549 {
1550 if (count && (-1UL)/count<size)
1551 return EXT2_ET_NO_MEMORY;
1552 return ext2fs_get_mem(count*size, ptr);
1553 }
1554
ext2fs_get_arrayzero(unsigned long count,unsigned long size,void * ptr)1555 _INLINE_ errcode_t ext2fs_get_arrayzero(unsigned long count,
1556 unsigned long size, void *ptr)
1557 {
1558 void *pp;
1559
1560 if (count && (-1UL)/count<size)
1561 return EXT2_ET_NO_MEMORY;
1562 pp = calloc(count, size);
1563 if (!pp)
1564 return EXT2_ET_NO_MEMORY;
1565 memcpy(ptr, &pp, sizeof(pp));
1566 return 0;
1567 }
1568
1569 /*
1570 * Free memory. The 'ptr' arg must point to a pointer.
1571 */
ext2fs_free_mem(void * ptr)1572 _INLINE_ errcode_t ext2fs_free_mem(void *ptr)
1573 {
1574 void *p;
1575
1576 memcpy(&p, ptr, sizeof(p));
1577 free(p);
1578 p = 0;
1579 memcpy(ptr, &p, sizeof(p));
1580 return 0;
1581 }
1582
1583 /*
1584 * Resize memory. The 'ptr' arg must point to a pointer.
1585 */
ext2fs_resize_mem(unsigned long EXT2FS_ATTR ((unused))old_size,unsigned long size,void * ptr)1586 _INLINE_ errcode_t ext2fs_resize_mem(unsigned long EXT2FS_ATTR((unused)) old_size,
1587 unsigned long size, void *ptr)
1588 {
1589 void *p;
1590
1591 /* Use "memcpy" for pointer assignments here to avoid problems
1592 * with C99 strict type aliasing rules. */
1593 memcpy(&p, ptr, sizeof(p));
1594 p = realloc(p, size);
1595 if (!p)
1596 return EXT2_ET_NO_MEMORY;
1597 memcpy(ptr, &p, sizeof(p));
1598 return 0;
1599 }
1600 #endif /* Custom memory routines */
1601
1602 /*
1603 * Mark a filesystem superblock as dirty
1604 */
ext2fs_mark_super_dirty(ext2_filsys fs)1605 _INLINE_ void ext2fs_mark_super_dirty(ext2_filsys fs)
1606 {
1607 fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_CHANGED;
1608 }
1609
1610 /*
1611 * Mark a filesystem as changed
1612 */
ext2fs_mark_changed(ext2_filsys fs)1613 _INLINE_ void ext2fs_mark_changed(ext2_filsys fs)
1614 {
1615 fs->flags |= EXT2_FLAG_CHANGED;
1616 }
1617
1618 /*
1619 * Check to see if a filesystem has changed
1620 */
ext2fs_test_changed(ext2_filsys fs)1621 _INLINE_ int ext2fs_test_changed(ext2_filsys fs)
1622 {
1623 return (fs->flags & EXT2_FLAG_CHANGED);
1624 }
1625
1626 /*
1627 * Mark a filesystem as valid
1628 */
ext2fs_mark_valid(ext2_filsys fs)1629 _INLINE_ void ext2fs_mark_valid(ext2_filsys fs)
1630 {
1631 fs->flags |= EXT2_FLAG_VALID;
1632 }
1633
1634 /*
1635 * Mark a filesystem as NOT valid
1636 */
ext2fs_unmark_valid(ext2_filsys fs)1637 _INLINE_ void ext2fs_unmark_valid(ext2_filsys fs)
1638 {
1639 fs->flags &= ~EXT2_FLAG_VALID;
1640 }
1641
1642 /*
1643 * Check to see if a filesystem is valid
1644 */
ext2fs_test_valid(ext2_filsys fs)1645 _INLINE_ int ext2fs_test_valid(ext2_filsys fs)
1646 {
1647 return (fs->flags & EXT2_FLAG_VALID);
1648 }
1649
1650 /*
1651 * Mark the inode bitmap as dirty
1652 */
ext2fs_mark_ib_dirty(ext2_filsys fs)1653 _INLINE_ void ext2fs_mark_ib_dirty(ext2_filsys fs)
1654 {
1655 fs->flags |= EXT2_FLAG_IB_DIRTY | EXT2_FLAG_CHANGED;
1656 }
1657
1658 /*
1659 * Mark the block bitmap as dirty
1660 */
ext2fs_mark_bb_dirty(ext2_filsys fs)1661 _INLINE_ void ext2fs_mark_bb_dirty(ext2_filsys fs)
1662 {
1663 fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_CHANGED;
1664 }
1665
1666 /*
1667 * Check to see if a filesystem's inode bitmap is dirty
1668 */
ext2fs_test_ib_dirty(ext2_filsys fs)1669 _INLINE_ int ext2fs_test_ib_dirty(ext2_filsys fs)
1670 {
1671 return (fs->flags & EXT2_FLAG_IB_DIRTY);
1672 }
1673
1674 /*
1675 * Check to see if a filesystem's block bitmap is dirty
1676 */
ext2fs_test_bb_dirty(ext2_filsys fs)1677 _INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs)
1678 {
1679 return (fs->flags & EXT2_FLAG_BB_DIRTY);
1680 }
1681
1682 /*
1683 * Return the group # of a block
1684 */
ext2fs_group_of_blk(ext2_filsys fs,blk_t blk)1685 _INLINE_ dgrp_t ext2fs_group_of_blk(ext2_filsys fs, blk_t blk)
1686 {
1687 return ext2fs_group_of_blk2(fs, blk);
1688 }
1689 /*
1690 * Return the group # of an inode number
1691 */
ext2fs_group_of_ino(ext2_filsys fs,ext2_ino_t ino)1692 _INLINE_ dgrp_t ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino)
1693 {
1694 return (ino - 1) / fs->super->s_inodes_per_group;
1695 }
1696
1697 /*
1698 * Return the first block (inclusive) in a group
1699 */
ext2fs_group_first_block(ext2_filsys fs,dgrp_t group)1700 _INLINE_ blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group)
1701 {
1702 return (blk_t) ext2fs_group_first_block2(fs, group);
1703 }
1704
1705 /*
1706 * Return the last block (inclusive) in a group
1707 */
ext2fs_group_last_block(ext2_filsys fs,dgrp_t group)1708 _INLINE_ blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group)
1709 {
1710 return (blk_t) ext2fs_group_last_block2(fs, group);
1711 }
1712
ext2fs_inode_data_blocks(ext2_filsys fs,struct ext2_inode * inode)1713 _INLINE_ blk_t ext2fs_inode_data_blocks(ext2_filsys fs,
1714 struct ext2_inode *inode)
1715 {
1716 return (blk_t) ext2fs_inode_data_blocks2(fs, inode);
1717 }
1718
1719 /*
1720 * This is an efficient, overflow safe way of calculating ceil((1.0 * a) / b)
1721 */
ext2fs_div_ceil(unsigned int a,unsigned int b)1722 _INLINE_ unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b)
1723 {
1724 if (!a)
1725 return 0;
1726 return ((a - 1) / b) + 1;
1727 }
1728
ext2fs_div64_ceil(__u64 a,__u64 b)1729 _INLINE_ __u64 ext2fs_div64_ceil(__u64 a, __u64 b)
1730 {
1731 if (!a)
1732 return 0;
1733 return ((a - 1) / b) + 1;
1734 }
1735
1736 #undef _INLINE_
1737 #endif
1738
1739 #ifdef __cplusplus
1740 }
1741 #endif
1742
1743 #endif /* _EXT2FS_EXT2FS_H */
1744