4 * Copyright (C) 1993, 1994, 1995, 1996 Theodore Ts'o.
7 * This file may be redistributed under the terms of the GNU Public
12 #ifndef _EXT2FS_EXT2FS_H
13 #define _EXT2FS_EXT2FS_H
16 #define EXT2FS_ATTR(x) __attribute__(x)
18 #define EXT2FS_ATTR(x)
26 * Non-GNU C compilers won't necessarily understand inline
28 #if (!defined(__GNUC__) && !defined(__WATCOMC__))
29 #define NO_INLINE_FUNCS
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
39 #define SUPERBLOCK_OFFSET 1024
40 #define SUPERBLOCK_SIZE 1024
43 * The last ext2fs revision level that this version of the library is
46 #define EXT2_LIB_CURRENT_REV EXT2_DYNAMIC_REV
48 #ifdef HAVE_SYS_TYPES_H
49 #include <sys/types.h>
56 #if EXT2_FLAT_INCLUDES
59 #include "ext3_extents.h"
61 #include <ext2fs/ext2_types.h>
62 #include <ext2fs/ext2_fs.h>
63 #include <ext2fs/ext3_extents.h>
64 #endif /* EXT2_FLAT_INCLUDES */
66 typedef __u32 ext2_ino_t;
68 typedef __u64 blk64_t;
70 typedef __u32 ext2_off_t;
71 typedef __s64 e2_blkcnt_t;
72 typedef __u32 ext2_dirhash_t;
74 #if EXT2_FLAT_INCLUDES
78 #include "ext2_ext_attr.h"
80 #include <et/com_err.h>
81 #include <ext2fs/ext2_io.h>
82 #include <ext2fs/ext2_err.h>
83 #include <ext2fs/ext2_ext_attr.h>
87 * Portability help for Microsoft Visual C++
90 #define EXT2_QSORT_TYPE int __cdecl
92 #define EXT2_QSORT_TYPE int
95 typedef struct struct_ext2_filsys *ext2_filsys;
97 #define EXT2FS_MARK_ERROR 0
98 #define EXT2FS_UNMARK_ERROR 1
99 #define EXT2FS_TEST_ERROR 2
101 typedef struct ext2fs_struct_generic_bitmap *ext2fs_generic_bitmap;
102 typedef struct ext2fs_struct_generic_bitmap *ext2fs_inode_bitmap;
103 typedef struct ext2fs_struct_generic_bitmap *ext2fs_block_bitmap;
105 #define EXT2_FIRST_INODE(s) EXT2_FIRST_INO(s)
109 * Badblocks list definitions
112 typedef struct ext2_struct_u32_list *ext2_badblocks_list;
113 typedef struct ext2_struct_u32_iterate *ext2_badblocks_iterate;
115 typedef struct ext2_struct_u32_list *ext2_u32_list;
116 typedef struct ext2_struct_u32_iterate *ext2_u32_iterate;
119 typedef struct ext2_struct_u32_list *badblocks_list;
120 typedef struct ext2_struct_u32_iterate *badblocks_iterate;
122 #define BADBLOCKS_FLAG_DIRTY 1
125 * ext2_dblist structure and abstractions (see dblist.c)
127 struct ext2_db_entry {
133 typedef struct ext2_struct_dblist *ext2_dblist;
135 #define DBLIST_ABORT 1
138 * ext2_fileio definitions
141 #define EXT2_FILE_WRITE 0x0001
142 #define EXT2_FILE_CREATE 0x0002
144 #define EXT2_FILE_MASK 0x00FF
146 #define EXT2_FILE_BUF_DIRTY 0x4000
147 #define EXT2_FILE_BUF_VALID 0x2000
149 typedef struct ext2_file *ext2_file_t;
151 #define EXT2_SEEK_SET 0
152 #define EXT2_SEEK_CUR 1
153 #define EXT2_SEEK_END 2
156 * Flags for the ext2_filsys structure and for ext2fs_open()
158 #define EXT2_FLAG_RW 0x01
159 #define EXT2_FLAG_CHANGED 0x02
160 #define EXT2_FLAG_DIRTY 0x04
161 #define EXT2_FLAG_VALID 0x08
162 #define EXT2_FLAG_IB_DIRTY 0x10
163 #define EXT2_FLAG_BB_DIRTY 0x20
164 #define EXT2_FLAG_SWAP_BYTES 0x40
165 #define EXT2_FLAG_SWAP_BYTES_READ 0x80
166 #define EXT2_FLAG_SWAP_BYTES_WRITE 0x100
167 #define EXT2_FLAG_MASTER_SB_ONLY 0x200
168 #define EXT2_FLAG_FORCE 0x400
169 #define EXT2_FLAG_SUPER_ONLY 0x800
170 #define EXT2_FLAG_JOURNAL_DEV_OK 0x1000
171 #define EXT2_FLAG_IMAGE_FILE 0x2000
172 #define EXT2_FLAG_EXCLUSIVE 0x4000
173 #define EXT2_FLAG_SOFTSUPP_FEATURES 0x8000
174 #define EXT2_FLAG_NOFREE_ON_ERROR 0x10000
177 * Special flag in the ext2 inode i_flag field that means that this is
178 * a new inode. (So that ext2_write_inode() can clear extra fields.)
180 #define EXT2_NEW_INODE_FL 0x80000000
183 * Flags for mkjournal
185 * EXT2_MKJOURNAL_V1_SUPER Make a (deprecated) V1 journal superblock
187 #define EXT2_MKJOURNAL_V1_SUPER 0x0000001
189 struct struct_ext2_filsys {
194 struct ext2_super_block * super;
195 unsigned int blocksize;
197 dgrp_t group_desc_count;
198 unsigned long desc_blocks;
199 struct ext2_group_desc * group_desc;
200 int inode_blocks_per_group;
201 ext2fs_inode_bitmap inode_map;
202 ext2fs_block_bitmap block_map;
203 errcode_t (*get_blocks)(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks);
204 errcode_t (*check_directory)(ext2_filsys fs, ext2_ino_t ino);
205 errcode_t (*write_bitmaps)(ext2_filsys fs);
206 errcode_t (*read_inode)(ext2_filsys fs, ext2_ino_t ino,
207 struct ext2_inode *inode);
208 errcode_t (*write_inode)(ext2_filsys fs, ext2_ino_t ino,
209 struct ext2_inode *inode);
210 ext2_badblocks_list badblocks;
212 __u32 stride; /* for mke2fs */
213 struct ext2_super_block * orig_super;
214 struct ext2_image_hdr * image_header;
218 * Reserved for future expansion
223 * Reserved for the use of the calling application.
230 struct ext2_inode_cache *icache;
234 #if EXT2_FLAT_INCLUDES
235 #include "e2_bitops.h"
237 #include <ext2fs/bitops.h>
241 * Return flags for the block iterator functions
243 #define BLOCK_CHANGED 1
244 #define BLOCK_ABORT 2
245 #define BLOCK_ERROR 4
248 * Block interate flags
250 * BLOCK_FLAG_APPEND, or BLOCK_FLAG_HOLE, indicates that the interator
251 * function should be called on blocks where the block number is zero.
252 * This is used by ext2fs_expand_dir() to be able to add a new block
253 * to an inode. It can also be used for programs that want to be able
254 * to deal with files that contain "holes".
256 * BLOCK_FLAG_DEPTH_TRAVERSE indicates that the iterator function for
257 * the indirect, doubly indirect, etc. blocks should be called after
258 * all of the blocks containined in the indirect blocks are processed.
259 * This is useful if you are going to be deallocating blocks from an
262 * BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be
263 * called for data blocks only.
265 * BLOCK_FLAG_READ_ONLY is a promise by the caller that it will not
266 * modify returned block number.
268 * BLOCK_FLAG_NO_LARGE is for internal use only. It informs
269 * ext2fs_block_iterate2 that large files won't be accepted.
271 #define BLOCK_FLAG_APPEND 1
272 #define BLOCK_FLAG_HOLE 1
273 #define BLOCK_FLAG_DEPTH_TRAVERSE 2
274 #define BLOCK_FLAG_DATA_ONLY 4
275 #define BLOCK_FLAG_READ_ONLY 8
277 #define BLOCK_FLAG_NO_LARGE 0x1000
280 * Magic "block count" return values for the block iterator function.
282 #define BLOCK_COUNT_IND (-1)
283 #define BLOCK_COUNT_DIND (-2)
284 #define BLOCK_COUNT_TIND (-3)
285 #define BLOCK_COUNT_TRANSLATOR (-4)
289 * Flags for ext2fs_move_blocks
291 #define EXT2_BMOVE_GET_DBLIST 0x0001
292 #define EXT2_BMOVE_DEBUG 0x0002
296 * Generic (non-filesystem layout specific) extents structure
299 #define EXT2_EXTENT_FLAGS_LEAF 0x0001
300 #define EXT2_EXTENT_FLAGS_UNINIT 0x0002
301 #define EXT2_EXTENT_FLAGS_SECOND_VISIT 0x0004
303 struct ext2fs_extent {
304 blk64_t e_pblk; /* first physical block */
305 blk64_t e_lblk; /* first logical block extent covers */
306 __u32 e_len; /* number of blocks covered by extent */
307 __u32 e_flags; /* extent flags */
310 typedef struct ext2_extent_handle *ext2_extent_handle_t;
311 typedef struct ext2_extent_path *ext2_extent_path_t;
314 * Flags used by ext2fs_extent_get()
316 #define EXT2_EXTENT_CURRENT 0x0000
317 #define EXT2_EXTENT_MOVE_MASK 0x000F
318 #define EXT2_EXTENT_ROOT 0x0001
319 #define EXT2_EXTENT_LAST_LEAF 0x0002
320 #define EXT2_EXTENT_FIRST_SIB 0x0003
321 #define EXT2_EXTENT_LAST_SIB 0x0004
322 #define EXT2_EXTENT_NEXT_SIB 0x0005
323 #define EXT2_EXTENT_PREV_SIB 0x0006
324 #define EXT2_EXTENT_NEXT_LEAF 0x0007
325 #define EXT2_EXTENT_PREV_LEAF 0x0008
326 #define EXT2_EXTENT_NEXT 0x0009
327 #define EXT2_EXTENT_PREV 0x000A
328 #define EXT2_EXTENT_UP 0x000B
329 #define EXT2_EXTENT_DOWN 0x000C
330 #define EXT2_EXTENT_DOWN_AND_LAST 0x000D
333 * Flags used by ext2fs_extent_insert()
335 #define EXT2_EXTENT_INSERT_AFTER 0x0001 /* insert after handle loc'n */
336 #define EXT2_EXTENT_INSERT_NOSPLIT 0x0002 /* insert may not cause split */
339 * Data structure returned by ext2fs_extent_get_info()
341 struct ext2_extent_info {
351 __u32 max_uninit_len;
355 * Flags for directory block reading and writing functions
357 #define EXT2_DIRBLOCK_V2_STRUCT 0x0001
360 * Return flags for the directory iterator functions
362 #define DIRENT_CHANGED 1
363 #define DIRENT_ABORT 2
364 #define DIRENT_ERROR 3
367 * Directory iterator flags
370 #define DIRENT_FLAG_INCLUDE_EMPTY 1
371 #define DIRENT_FLAG_INCLUDE_REMOVED 2
373 #define DIRENT_DOT_FILE 1
374 #define DIRENT_DOT_DOT_FILE 2
375 #define DIRENT_OTHER_FILE 3
376 #define DIRENT_DELETED_FILE 4
379 * Inode scan definitions
381 typedef struct ext2_struct_inode_scan *ext2_inode_scan;
386 #define EXT2_SF_CHK_BADBLOCKS 0x0001
387 #define EXT2_SF_BAD_INODE_BLK 0x0002
388 #define EXT2_SF_BAD_EXTRA_BYTES 0x0004
389 #define EXT2_SF_SKIP_MISSING_ITABLE 0x0008
390 #define EXT2_SF_DO_LAZY 0x0010
393 * ext2fs_check_if_mounted flags
395 #define EXT2_MF_MOUNTED 1
396 #define EXT2_MF_ISROOT 2
397 #define EXT2_MF_READONLY 4
398 #define EXT2_MF_SWAP 8
399 #define EXT2_MF_BUSY 16
402 * Ext2/linux mode flags. We define them here so that we don't need
403 * to depend on the OS's sys/stat.h, since we may be compiling on a
406 #define LINUX_S_IFMT 00170000
407 #define LINUX_S_IFSOCK 0140000
408 #define LINUX_S_IFLNK 0120000
409 #define LINUX_S_IFREG 0100000
410 #define LINUX_S_IFBLK 0060000
411 #define LINUX_S_IFDIR 0040000
412 #define LINUX_S_IFCHR 0020000
413 #define LINUX_S_IFIFO 0010000
414 #define LINUX_S_ISUID 0004000
415 #define LINUX_S_ISGID 0002000
416 #define LINUX_S_ISVTX 0001000
418 #define LINUX_S_IRWXU 00700
419 #define LINUX_S_IRUSR 00400
420 #define LINUX_S_IWUSR 00200
421 #define LINUX_S_IXUSR 00100
423 #define LINUX_S_IRWXG 00070
424 #define LINUX_S_IRGRP 00040
425 #define LINUX_S_IWGRP 00020
426 #define LINUX_S_IXGRP 00010
428 #define LINUX_S_IRWXO 00007
429 #define LINUX_S_IROTH 00004
430 #define LINUX_S_IWOTH 00002
431 #define LINUX_S_IXOTH 00001
433 #define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK)
434 #define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG)
435 #define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR)
436 #define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR)
437 #define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK)
438 #define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO)
439 #define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK)
442 * ext2 size of an inode
444 #define EXT2_I_SIZE(i) ((i)->i_size | ((__u64) (i)->i_size_high << 32))
447 * ext2_icount_t abstraction
449 #define EXT2_ICOUNT_OPT_INCREMENT 0x01
451 typedef struct ext2_icount *ext2_icount_t;
454 * Flags for ext2fs_bmap
456 #define BMAP_ALLOC 0x0001
457 #define BMAP_SET 0x0002
460 * Returned flags from ext2fs_bmap
462 #define BMAP_RET_UNINIT 0x0001
465 * Flags for imager.c functions
467 #define IMAGER_FLAG_INODEMAP 1
468 #define IMAGER_FLAG_SPARSEWRITE 2
471 * For checking structure magic numbers...
474 #define EXT2_CHECK_MAGIC(struct, code) \
475 if ((struct)->magic != (code)) return (code)
479 * For ext2 compression support
481 #define EXT2FS_COMPRESSED_BLKADDR ((blk_t) -1)
482 #define HOLE_BLKADDR(_b) ((_b) == 0 || (_b) == EXT2FS_COMPRESSED_BLKADDR)
485 * Features supported by this version of the library
487 #define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\
488 EXT2_FEATURE_COMPAT_IMAGIC_INODES|\
489 EXT3_FEATURE_COMPAT_HAS_JOURNAL|\
490 EXT2_FEATURE_COMPAT_RESIZE_INODE|\
491 EXT2_FEATURE_COMPAT_DIR_INDEX|\
492 EXT2_FEATURE_COMPAT_EXT_ATTR)
494 /* This #ifdef is temporary until compression is fully supported */
495 #ifdef ENABLE_COMPRESSION
496 #ifndef I_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL
497 /* If the below warning bugs you, then have
498 `CPPFLAGS=-DI_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL' in your
499 environment at configure time. */
500 #warning "Compression support is experimental"
502 #define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\
503 EXT2_FEATURE_INCOMPAT_COMPRESSION|\
504 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\
505 EXT2_FEATURE_INCOMPAT_META_BG|\
506 EXT3_FEATURE_INCOMPAT_RECOVER|\
507 EXT3_FEATURE_INCOMPAT_EXTENTS|\
508 EXT4_FEATURE_INCOMPAT_FLEX_BG)
510 #define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\
511 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\
512 EXT2_FEATURE_INCOMPAT_META_BG|\
513 EXT3_FEATURE_INCOMPAT_RECOVER|\
514 EXT3_FEATURE_INCOMPAT_EXTENTS|\
515 EXT4_FEATURE_INCOMPAT_FLEX_BG)
517 #define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\
518 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|\
519 EXT2_FEATURE_RO_COMPAT_LARGE_FILE|\
520 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|\
521 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)
524 * These features are only allowed if EXT2_FLAG_SOFTSUPP_FEATURES is passed
527 #define EXT2_LIB_SOFTSUPP_INCOMPAT (0)
528 #define EXT2_LIB_SOFTSUPP_RO_COMPAT (EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE)
531 * function prototypes
535 extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode,
536 ext2fs_inode_bitmap map, ext2_ino_t *ret);
537 extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal,
538 ext2fs_block_bitmap map, blk_t *ret);
539 extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start,
540 blk_t finish, int num,
541 ext2fs_block_bitmap map,
543 extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal,
544 char *block_buf, blk_t *ret);
547 extern int ext2fs_reserve_super_and_bgd(ext2_filsys fs,
549 ext2fs_block_bitmap bmap);
552 void ext2fs_inode_alloc_stats(ext2_filsys fs, ext2_ino_t ino, int inuse);
553 void ext2fs_inode_alloc_stats2(ext2_filsys fs, ext2_ino_t ino,
554 int inuse, int isdir);
555 void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse);
558 extern errcode_t ext2fs_allocate_tables(ext2_filsys fs);
559 extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group,
560 ext2fs_block_bitmap bmap);
563 extern errcode_t ext2fs_u32_list_create(ext2_u32_list *ret, int size);
564 extern errcode_t ext2fs_u32_list_add(ext2_u32_list bb, __u32 blk);
565 extern int ext2fs_u32_list_find(ext2_u32_list bb, __u32 blk);
566 extern int ext2fs_u32_list_test(ext2_u32_list bb, blk_t blk);
567 extern errcode_t ext2fs_u32_list_iterate_begin(ext2_u32_list bb,
568 ext2_u32_iterate *ret);
569 extern int ext2fs_u32_list_iterate(ext2_u32_iterate iter, blk_t *blk);
570 extern void ext2fs_u32_list_iterate_end(ext2_u32_iterate iter);
571 extern errcode_t ext2fs_u32_copy(ext2_u32_list src, ext2_u32_list *dest);
572 extern int ext2fs_u32_list_equal(ext2_u32_list bb1, ext2_u32_list bb2);
574 extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret,
576 extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb,
578 extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb,
580 extern int ext2fs_u32_list_del(ext2_u32_list bb, __u32 blk);
581 extern void ext2fs_badblocks_list_del(ext2_u32_list bb, __u32 blk);
583 ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb,
584 ext2_badblocks_iterate *ret);
585 extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter,
587 extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter);
588 extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src,
589 ext2_badblocks_list *dest);
590 extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1,
591 ext2_badblocks_list bb2);
592 extern int ext2fs_u32_list_count(ext2_u32_list bb);
595 extern errcode_t badblocks_list_create(badblocks_list *ret, int size);
596 extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk);
597 extern int badblocks_list_test(badblocks_list bb, blk_t blk);
598 extern errcode_t badblocks_list_iterate_begin(badblocks_list bb,
599 badblocks_iterate *ret);
600 extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk);
601 extern void badblocks_list_iterate_end(badblocks_iterate iter);
602 extern void badblocks_list_free(badblocks_list bb);
605 extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs,
606 ext2_badblocks_list bb_list);
609 extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap);
610 extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap);
611 extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src,
612 ext2fs_generic_bitmap *dest);
613 extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs);
614 extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs);
615 extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs);
616 extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs);
617 extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs,
619 ext2fs_block_bitmap *ret);
620 extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs,
622 ext2fs_inode_bitmap *ret);
623 extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap,
624 ext2_ino_t end, ext2_ino_t *oend);
625 extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap,
626 blk_t end, blk_t *oend);
627 extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap);
628 extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap);
629 extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs);
630 extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs);
631 extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end,
632 ext2fs_inode_bitmap bmap);
633 extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end,
634 ext2fs_block_bitmap bmap);
635 extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1,
636 ext2fs_block_bitmap bm2);
637 extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1,
638 ext2fs_inode_bitmap bm2);
639 extern errcode_t ext2fs_set_inode_bitmap_range(ext2fs_inode_bitmap bmap,
640 ext2_ino_t start, unsigned int num,
642 extern errcode_t ext2fs_get_inode_bitmap_range(ext2fs_inode_bitmap bmap,
643 ext2_ino_t start, unsigned int num,
645 extern errcode_t ext2fs_set_block_bitmap_range(ext2fs_block_bitmap bmap,
646 blk_t start, unsigned int num,
648 extern errcode_t ext2fs_get_block_bitmap_range(ext2fs_block_bitmap bmap,
649 blk_t start, unsigned int num,
654 extern errcode_t ext2fs_block_iterate(ext2_filsys fs,
658 int (*func)(ext2_filsys fs,
663 errcode_t ext2fs_block_iterate2(ext2_filsys fs,
667 int (*func)(ext2_filsys fs,
669 e2_blkcnt_t blockcnt,
676 extern errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino,
677 struct ext2_inode *inode,
678 char *block_buf, int bmap_flags,
679 blk_t block, blk_t *phys_blk);
680 extern errcode_t ext2fs_bmap2(ext2_filsys fs, ext2_ino_t ino,
681 struct ext2_inode *inode,
682 char *block_buf, int bmap_flags, blk64_t block,
683 int *ret_flags, blk64_t *phys_blk);
687 extern errcode_t ext2fs_move_blocks(ext2_filsys fs,
688 ext2fs_block_bitmap reserve,
689 ext2fs_block_bitmap alloc_map,
694 extern errcode_t ext2fs_check_desc(ext2_filsys fs);
697 extern errcode_t ext2fs_close(ext2_filsys fs);
698 extern errcode_t ext2fs_flush(ext2_filsys fs);
699 extern int ext2fs_bg_has_super(ext2_filsys fs, int group_block);
700 extern int ext2fs_super_and_bgd_loc(ext2_filsys fs,
702 blk_t *ret_super_blk,
703 blk_t *ret_old_desc_blk,
704 blk_t *ret_new_desc_blk,
706 extern void ext2fs_update_dynamic_rev(ext2_filsys fs);
709 extern void ext2fs_group_desc_csum_set(ext2_filsys fs, dgrp_t group);
710 extern int ext2fs_group_desc_csum_verify(ext2_filsys fs, dgrp_t group);
711 extern errcode_t ext2fs_set_gdt_csum(ext2_filsys fs);
715 extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs);
716 extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist);
717 extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ext2_ino_t ino,
718 blk_t blk, int blockcnt);
719 extern void ext2fs_dblist_sort(ext2_dblist dblist,
720 EXT2_QSORT_TYPE (*sortfunc)(const void *,
722 extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist,
723 int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info,
726 extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ext2_ino_t ino,
727 blk_t blk, int blockcnt);
728 extern errcode_t ext2fs_copy_dblist(ext2_dblist src,
730 extern int ext2fs_dblist_count(ext2_dblist dblist);
731 extern errcode_t ext2fs_dblist_get_last(ext2_dblist dblist,
732 struct ext2_db_entry **entry);
733 extern errcode_t ext2fs_dblist_drop_last(ext2_dblist dblist);
737 ext2fs_dblist_dir_iterate(ext2_dblist dblist,
740 int (*func)(ext2_ino_t dir,
742 struct ext2_dir_entry *dirent,
750 extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block,
752 extern errcode_t ext2fs_read_dir_block2(ext2_filsys fs, blk_t block,
753 void *buf, int flags);
754 extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block,
756 extern errcode_t ext2fs_write_dir_block2(ext2_filsys fs, blk_t block,
757 void *buf, int flags);
760 extern errcode_t ext2fs_dirhash(int version, const char *name, int len,
762 ext2_dirhash_t *ret_hash,
763 ext2_dirhash_t *ret_minor_hash);
767 extern errcode_t ext2fs_dir_iterate(ext2_filsys fs,
771 int (*func)(struct ext2_dir_entry *dirent,
777 extern errcode_t ext2fs_dir_iterate2(ext2_filsys fs,
781 int (*func)(ext2_ino_t dir,
783 struct ext2_dir_entry *dirent,
791 extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest);
794 extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir);
797 extern __u32 ext2fs_ext_attr_hash_entry(struct ext2_ext_attr_entry *entry,
799 extern errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf);
800 extern errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block,
802 extern errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk,
804 int adjust, __u32 *newcount);
807 extern errcode_t ext2fs_extent_header_verify(void *ptr, int size);
808 extern errcode_t ext2fs_extent_open(ext2_filsys fs, ext2_ino_t ino,
809 ext2_extent_handle_t *handle);
810 extern void ext2fs_extent_free(ext2_extent_handle_t handle);
811 extern errcode_t ext2fs_extent_get(ext2_extent_handle_t handle,
812 int flags, struct ext2fs_extent *extent);
813 extern errcode_t ext2fs_extent_replace(ext2_extent_handle_t handle, int flags,
814 struct ext2fs_extent *extent);
815 extern errcode_t ext2fs_extent_insert(ext2_extent_handle_t handle, int flags,
816 struct ext2fs_extent *extent);
817 extern errcode_t ext2fs_extent_delete(ext2_extent_handle_t handle, int flags);
818 extern errcode_t ext2fs_extent_get_info(ext2_extent_handle_t handle,
819 struct ext2_extent_info *info);
820 extern errcode_t ext2fs_extent_goto(ext2_extent_handle_t handle,
824 extern errcode_t ext2fs_file_open2(ext2_filsys fs, ext2_ino_t ino,
825 struct ext2_inode *inode,
826 int flags, ext2_file_t *ret);
827 extern errcode_t ext2fs_file_open(ext2_filsys fs, ext2_ino_t ino,
828 int flags, ext2_file_t *ret);
829 extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file);
830 extern errcode_t ext2fs_file_close(ext2_file_t file);
831 extern errcode_t ext2fs_file_flush(ext2_file_t file);
832 extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf,
833 unsigned int wanted, unsigned int *got);
834 extern errcode_t ext2fs_file_write(ext2_file_t file, const void *buf,
835 unsigned int nbytes, unsigned int *written);
836 extern errcode_t ext2fs_file_llseek(ext2_file_t file, __u64 offset,
837 int whence, __u64 *ret_pos);
838 extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset,
839 int whence, ext2_off_t *ret_pos);
840 errcode_t ext2fs_file_get_lsize(ext2_file_t file, __u64 *ret_size);
841 extern ext2_off_t ext2fs_file_get_size(ext2_file_t file);
842 extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size);
845 extern char *ext2fs_find_block_device(dev_t device);
848 extern errcode_t ext2fs_sync_device(int fd, int flushb);
851 extern void ext2fs_free(ext2_filsys fs);
852 extern void ext2fs_free_dblist(ext2_dblist dblist);
853 extern void ext2fs_badblocks_list_free(ext2_badblocks_list bb);
854 extern void ext2fs_u32_list_free(ext2_u32_list bb);
857 extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap);
858 extern errcode_t ext2fs_make_generic_bitmap(errcode_t magic, ext2_filsys fs,
859 __u32 start, __u32 end,
861 const char *descr, char *init_map,
862 ext2fs_generic_bitmap *ret);
863 extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start,
867 ext2fs_generic_bitmap *ret);
868 extern errcode_t ext2fs_copy_generic_bitmap(ext2fs_generic_bitmap src,
869 ext2fs_generic_bitmap *dest);
870 extern void ext2fs_clear_generic_bitmap(ext2fs_generic_bitmap bitmap);
871 extern errcode_t ext2fs_fudge_generic_bitmap_end(ext2fs_inode_bitmap bitmap,
876 extern void ext2fs_set_generic_bitmap_padding(ext2fs_generic_bitmap map);
877 extern errcode_t ext2fs_resize_generic_bitmap(errcode_t magic,
880 ext2fs_generic_bitmap bmap);
881 extern errcode_t ext2fs_compare_generic_bitmap(errcode_t magic, errcode_t neq,
882 ext2fs_generic_bitmap bm1,
883 ext2fs_generic_bitmap bm2);
884 extern errcode_t ext2fs_get_generic_bitmap_range(ext2fs_generic_bitmap bmap,
886 __u32 start, __u32 num,
888 extern errcode_t ext2fs_set_generic_bitmap_range(ext2fs_generic_bitmap bmap,
890 __u32 start, __u32 num,
894 extern errcode_t ext2fs_get_device_size(const char *file, int blocksize,
898 errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize);
901 errcode_t ext2fs_iblk_add_blocks(ext2_filsys fs, struct ext2_inode *inode,
903 errcode_t ext2fs_iblk_sub_blocks(ext2_filsys fs, struct ext2_inode *inode,
905 errcode_t ext2fs_iblk_set(ext2_filsys fs, struct ext2_inode *inode, blk64_t b);
908 extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags);
909 extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags);
910 extern errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd, int flags);
911 extern errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd, int flags);
912 extern errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags);
913 extern errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags);
916 errcode_t ext2fs_read_ind_block(ext2_filsys fs, blk_t blk, void *buf);
917 errcode_t ext2fs_write_ind_block(ext2_filsys fs, blk_t blk, void *buf);
920 extern errcode_t ext2fs_initialize(const char *name, int flags,
921 struct ext2_super_block *param,
922 io_manager manager, ext2_filsys *ret_fs);
925 extern void ext2fs_free_icount(ext2_icount_t icount);
926 extern errcode_t ext2fs_create_icount_tdb(ext2_filsys fs, char *tdb_dir,
927 int flags, ext2_icount_t *ret);
928 extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags,
930 ext2_icount_t hint, ext2_icount_t *ret);
931 extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags,
934 extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ext2_ino_t ino,
936 extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ext2_ino_t ino,
938 extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ext2_ino_t ino,
940 extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ext2_ino_t ino,
942 extern ext2_ino_t ext2fs_get_icount_size(ext2_icount_t icount);
943 errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *);
946 extern errcode_t ext2fs_flush_icache(ext2_filsys fs);
947 extern errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan,
949 struct ext2_inode *inode,
951 extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks,
952 ext2_inode_scan *ret_scan);
953 extern void ext2fs_close_inode_scan(ext2_inode_scan scan);
954 extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino,
955 struct ext2_inode *inode);
956 extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan,
958 extern void ext2fs_set_inode_callback
959 (ext2_inode_scan scan,
960 errcode_t (*done_group)(ext2_filsys fs,
961 ext2_inode_scan scan,
964 void *done_group_data);
965 extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags,
967 extern errcode_t ext2fs_read_inode_full(ext2_filsys fs, ext2_ino_t ino,
968 struct ext2_inode * inode,
970 extern errcode_t ext2fs_read_inode (ext2_filsys fs, ext2_ino_t ino,
971 struct ext2_inode * inode);
972 extern errcode_t ext2fs_write_inode_full(ext2_filsys fs, ext2_ino_t ino,
973 struct ext2_inode * inode,
975 extern errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino,
976 struct ext2_inode * inode);
977 extern errcode_t ext2fs_write_new_inode(ext2_filsys fs, ext2_ino_t ino,
978 struct ext2_inode * inode);
979 extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks);
980 extern errcode_t ext2fs_check_directory(ext2_filsys fs, ext2_ino_t ino);
983 extern io_manager inode_io_manager;
984 extern errcode_t ext2fs_inode_io_intern(ext2_filsys fs, ext2_ino_t ino,
986 extern errcode_t ext2fs_inode_io_intern2(ext2_filsys fs, ext2_ino_t ino,
987 struct ext2_inode *inode,
991 extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags);
992 extern errcode_t ext2fs_check_mount_point(const char *device, int *mount_flags,
993 char *mtpt, int mtlen);
996 extern errcode_t ext2fs_lookup(ext2_filsys fs, ext2_ino_t dir, const char *name,
997 int namelen, char *buf, ext2_ino_t *inode);
998 extern errcode_t ext2fs_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
999 const char *name, ext2_ino_t *inode);
1000 errcode_t ext2fs_namei_follow(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
1001 const char *name, ext2_ino_t *inode);
1002 extern errcode_t ext2fs_follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
1003 ext2_ino_t inode, ext2_ino_t *res_inode);
1006 int ext2fs_native_flag(void);
1009 extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino,
1010 ext2_ino_t parent_ino, char **block);
1013 extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum,
1017 extern errcode_t ext2fs_zero_blocks(ext2_filsys fs, blk_t blk, int num,
1018 blk_t *ret_blk, int *ret_count);
1019 extern errcode_t ext2fs_create_journal_superblock(ext2_filsys fs,
1020 __u32 size, int flags,
1022 extern errcode_t ext2fs_add_journal_device(ext2_filsys fs,
1023 ext2_filsys journal_dev);
1024 extern errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t size,
1026 extern int ext2fs_default_journal_size(__u64 blocks);
1029 extern errcode_t ext2fs_open(const char *name, int flags, int superblock,
1030 unsigned int block_size, io_manager manager,
1031 ext2_filsys *ret_fs);
1032 extern errcode_t ext2fs_open2(const char *name, const char *io_options,
1033 int flags, int superblock,
1034 unsigned int block_size, io_manager manager,
1035 ext2_filsys *ret_fs);
1036 extern blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block,
1038 errcode_t ext2fs_get_data_io(ext2_filsys fs, io_channel *old_io);
1039 errcode_t ext2fs_set_data_io(ext2_filsys fs, io_channel new_io);
1040 errcode_t ext2fs_rewrite_to_io(ext2_filsys fs, io_channel new_io);
1042 /* get_pathname.c */
1043 extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino,
1047 errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name,
1048 ext2_ino_t ino, int flags);
1049 errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir, const char *name,
1050 ext2_ino_t ino, int flags);
1053 extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs,
1054 ext2_badblocks_list *bb_list);
1056 /* read_bb_file.c */
1057 extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f,
1058 ext2_badblocks_list *bb_list,
1060 void (*invalid)(ext2_filsys fs,
1064 extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f,
1065 ext2_badblocks_list *bb_list,
1066 void (*invalid)(ext2_filsys fs,
1070 extern errcode_t ext2fs_create_resize_inode(ext2_filsys fs);
1073 extern void ext2fs_swap_ext_attr(char *to, char *from, int bufsize,
1075 extern void ext2fs_swap_ext_attr_header(struct ext2_ext_attr_header *to_header,
1076 struct ext2_ext_attr_header *from_hdr);
1077 extern void ext2fs_swap_ext_attr_entry(struct ext2_ext_attr_entry *to_entry,
1078 struct ext2_ext_attr_entry *from_entry);
1079 extern void ext2fs_swap_super(struct ext2_super_block * super);
1080 extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp);
1081 extern void ext2fs_swap_inode_full(ext2_filsys fs, struct ext2_inode_large *t,
1082 struct ext2_inode_large *f, int hostorder,
1084 extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t,
1085 struct ext2_inode *f, int hostorder);
1088 extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode);
1091 extern int ext2fs_parse_version_string(const char *ver_string);
1092 extern int ext2fs_get_library_version(const char **ver_string,
1093 const char **date_string);
1095 /* write_bb_file.c */
1096 extern errcode_t ext2fs_write_bb_FILE(ext2_badblocks_list bb_list,
1101 /* inline functions */
1102 extern errcode_t ext2fs_get_mem(unsigned long size, void *ptr);
1103 extern errcode_t ext2fs_get_array(unsigned long count, unsigned long size, void *ptr);
1104 extern errcode_t ext2fs_free_mem(void *ptr);
1105 extern errcode_t ext2fs_resize_mem(unsigned long old_size,
1106 unsigned long size, void *ptr);
1107 extern void ext2fs_mark_super_dirty(ext2_filsys fs);
1108 extern void ext2fs_mark_changed(ext2_filsys fs);
1109 extern int ext2fs_test_changed(ext2_filsys fs);
1110 extern void ext2fs_mark_valid(ext2_filsys fs);
1111 extern void ext2fs_unmark_valid(ext2_filsys fs);
1112 extern int ext2fs_test_valid(ext2_filsys fs);
1113 extern void ext2fs_mark_ib_dirty(ext2_filsys fs);
1114 extern void ext2fs_mark_bb_dirty(ext2_filsys fs);
1115 extern int ext2fs_test_ib_dirty(ext2_filsys fs);
1116 extern int ext2fs_test_bb_dirty(ext2_filsys fs);
1117 extern int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk);
1118 extern int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino);
1119 extern blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group);
1120 extern blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group);
1121 extern blk_t ext2fs_inode_data_blocks(ext2_filsys fs,
1122 struct ext2_inode *inode);
1123 extern unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b);
1126 * The actual inlined functions definitions themselves...
1128 * If NO_INLINE_FUNCS is defined, then we won't try to do inline
1131 #if (defined(INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS))
1132 #ifdef INCLUDE_INLINE_FUNCS
1133 #define _INLINE_ extern
1136 #define _INLINE_ extern __inline__
1137 #else /* For Watcom C */
1138 #define _INLINE_ extern inline
1142 #ifndef EXT2_CUSTOM_MEMORY_ROUTINES
1147 _INLINE_ errcode_t ext2fs_get_mem(unsigned long size, void *ptr)
1153 return EXT2_ET_NO_MEMORY;
1154 memcpy(ptr, &pp, sizeof (pp));
1158 _INLINE_ errcode_t ext2fs_get_array(unsigned long count, unsigned long size, void *ptr)
1160 if (count && (-1UL)/count<size)
1161 return EXT2_ET_NO_MEMORY; //maybe define EXT2_ET_OVERFLOW ?
1162 return ext2fs_get_mem(count*size, ptr);
1168 _INLINE_ errcode_t ext2fs_free_mem(void *ptr)
1172 memcpy(&p, ptr, sizeof(p));
1175 memcpy(ptr, &p, sizeof(p));
1182 _INLINE_ errcode_t ext2fs_resize_mem(unsigned long EXT2FS_ATTR((unused)) old_size,
1183 unsigned long size, void *ptr)
1187 /* Use "memcpy" for pointer assignments here to avoid problems
1188 * with C99 strict type aliasing rules. */
1189 memcpy(&p, ptr, sizeof(p));
1190 p = realloc(p, size);
1192 return EXT2_ET_NO_MEMORY;
1193 memcpy(ptr, &p, sizeof(p));
1196 #endif /* Custom memory routines */
1199 * Mark a filesystem superblock as dirty
1201 _INLINE_ void ext2fs_mark_super_dirty(ext2_filsys fs)
1203 fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_CHANGED;
1207 * Mark a filesystem as changed
1209 _INLINE_ void ext2fs_mark_changed(ext2_filsys fs)
1211 fs->flags |= EXT2_FLAG_CHANGED;
1215 * Check to see if a filesystem has changed
1217 _INLINE_ int ext2fs_test_changed(ext2_filsys fs)
1219 return (fs->flags & EXT2_FLAG_CHANGED);
1223 * Mark a filesystem as valid
1225 _INLINE_ void ext2fs_mark_valid(ext2_filsys fs)
1227 fs->flags |= EXT2_FLAG_VALID;
1231 * Mark a filesystem as NOT valid
1233 _INLINE_ void ext2fs_unmark_valid(ext2_filsys fs)
1235 fs->flags &= ~EXT2_FLAG_VALID;
1239 * Check to see if a filesystem is valid
1241 _INLINE_ int ext2fs_test_valid(ext2_filsys fs)
1243 return (fs->flags & EXT2_FLAG_VALID);
1247 * Mark the inode bitmap as dirty
1249 _INLINE_ void ext2fs_mark_ib_dirty(ext2_filsys fs)
1251 fs->flags |= EXT2_FLAG_IB_DIRTY | EXT2_FLAG_CHANGED;
1255 * Mark the block bitmap as dirty
1257 _INLINE_ void ext2fs_mark_bb_dirty(ext2_filsys fs)
1259 fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_CHANGED;
1263 * Check to see if a filesystem's inode bitmap is dirty
1265 _INLINE_ int ext2fs_test_ib_dirty(ext2_filsys fs)
1267 return (fs->flags & EXT2_FLAG_IB_DIRTY);
1271 * Check to see if a filesystem's block bitmap is dirty
1273 _INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs)
1275 return (fs->flags & EXT2_FLAG_BB_DIRTY);
1279 * Return the group # of a block
1281 _INLINE_ int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk)
1283 return (blk - fs->super->s_first_data_block) /
1284 fs->super->s_blocks_per_group;
1288 * Return the group # of an inode number
1290 _INLINE_ int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino)
1292 return (ino - 1) / fs->super->s_inodes_per_group;
1296 * Return the first block (inclusive) in a group
1298 _INLINE_ blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group)
1300 return fs->super->s_first_data_block +
1301 (group * fs->super->s_blocks_per_group);
1305 * Return the last block (inclusive) in a group
1307 _INLINE_ blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group)
1309 return (group == fs->group_desc_count - 1 ?
1310 fs->super->s_blocks_count - 1 :
1311 ext2fs_group_first_block(fs, group) +
1312 (fs->super->s_blocks_per_group - 1));
1315 _INLINE_ blk_t ext2fs_inode_data_blocks(ext2_filsys fs,
1316 struct ext2_inode *inode)
1318 return inode->i_blocks -
1319 (inode->i_file_acl ? fs->blocksize >> 9 : 0);
1323 * This is an efficient, overflow safe way of calculating ceil((1.0 * a) / b)
1325 _INLINE_ unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b)
1329 return ((a - 1) / b) + 1;
1338 #endif /* _EXT2FS_EXT2FS_H */