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 * More callback functions
236 errcode_t (*get_alloc_block)(ext2_filsys fs, blk64_t goal,
238 void (*block_alloc_stats)(ext2_filsys fs, blk64_t blk, int inuse);
241 #if EXT2_FLAT_INCLUDES
242 #include "e2_bitops.h"
244 #include <ext2fs/bitops.h>
248 * Return flags for the block iterator functions
250 #define BLOCK_CHANGED 1
251 #define BLOCK_ABORT 2
252 #define BLOCK_ERROR 4
255 * Block interate flags
257 * BLOCK_FLAG_APPEND, or BLOCK_FLAG_HOLE, indicates that the interator
258 * function should be called on blocks where the block number is zero.
259 * This is used by ext2fs_expand_dir() to be able to add a new block
260 * to an inode. It can also be used for programs that want to be able
261 * to deal with files that contain "holes".
263 * BLOCK_FLAG_DEPTH_TRAVERSE indicates that the iterator function for
264 * the indirect, doubly indirect, etc. blocks should be called after
265 * all of the blocks containined in the indirect blocks are processed.
266 * This is useful if you are going to be deallocating blocks from an
269 * BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be
270 * called for data blocks only.
272 * BLOCK_FLAG_READ_ONLY is a promise by the caller that it will not
273 * modify returned block number.
275 * BLOCK_FLAG_NO_LARGE is for internal use only. It informs
276 * ext2fs_block_iterate2 that large files won't be accepted.
278 #define BLOCK_FLAG_APPEND 1
279 #define BLOCK_FLAG_HOLE 1
280 #define BLOCK_FLAG_DEPTH_TRAVERSE 2
281 #define BLOCK_FLAG_DATA_ONLY 4
282 #define BLOCK_FLAG_READ_ONLY 8
284 #define BLOCK_FLAG_NO_LARGE 0x1000
287 * Magic "block count" return values for the block iterator function.
289 #define BLOCK_COUNT_IND (-1)
290 #define BLOCK_COUNT_DIND (-2)
291 #define BLOCK_COUNT_TIND (-3)
292 #define BLOCK_COUNT_TRANSLATOR (-4)
296 * Flags for ext2fs_move_blocks
298 #define EXT2_BMOVE_GET_DBLIST 0x0001
299 #define EXT2_BMOVE_DEBUG 0x0002
303 * Generic (non-filesystem layout specific) extents structure
306 #define EXT2_EXTENT_FLAGS_LEAF 0x0001
307 #define EXT2_EXTENT_FLAGS_UNINIT 0x0002
308 #define EXT2_EXTENT_FLAGS_SECOND_VISIT 0x0004
310 struct ext2fs_extent {
311 blk64_t e_pblk; /* first physical block */
312 blk64_t e_lblk; /* first logical block extent covers */
313 __u32 e_len; /* number of blocks covered by extent */
314 __u32 e_flags; /* extent flags */
317 typedef struct ext2_extent_handle *ext2_extent_handle_t;
318 typedef struct ext2_extent_path *ext2_extent_path_t;
321 * Flags used by ext2fs_extent_get()
323 #define EXT2_EXTENT_CURRENT 0x0000
324 #define EXT2_EXTENT_MOVE_MASK 0x000F
325 #define EXT2_EXTENT_ROOT 0x0001
326 #define EXT2_EXTENT_LAST_LEAF 0x0002
327 #define EXT2_EXTENT_FIRST_SIB 0x0003
328 #define EXT2_EXTENT_LAST_SIB 0x0004
329 #define EXT2_EXTENT_NEXT_SIB 0x0005
330 #define EXT2_EXTENT_PREV_SIB 0x0006
331 #define EXT2_EXTENT_NEXT_LEAF 0x0007
332 #define EXT2_EXTENT_PREV_LEAF 0x0008
333 #define EXT2_EXTENT_NEXT 0x0009
334 #define EXT2_EXTENT_PREV 0x000A
335 #define EXT2_EXTENT_UP 0x000B
336 #define EXT2_EXTENT_DOWN 0x000C
337 #define EXT2_EXTENT_DOWN_AND_LAST 0x000D
340 * Flags used by ext2fs_extent_insert()
342 #define EXT2_EXTENT_INSERT_AFTER 0x0001 /* insert after handle loc'n */
343 #define EXT2_EXTENT_INSERT_NOSPLIT 0x0002 /* insert may not cause split */
346 * Flags used by ext2fs_extent_delete()
348 #define EXT2_EXTENT_DELETE_KEEP_EMPTY 0x001 /* keep node if last extnt gone */
351 * Flags used by ext2fs_extent_set_bmap()
353 #define EXT2_EXTENT_SET_BMAP_UNINIT 0x0001
356 * Data structure returned by ext2fs_extent_get_info()
358 struct ext2_extent_info {
368 __u32 max_uninit_len;
372 * Flags for directory block reading and writing functions
374 #define EXT2_DIRBLOCK_V2_STRUCT 0x0001
377 * Return flags for the directory iterator functions
379 #define DIRENT_CHANGED 1
380 #define DIRENT_ABORT 2
381 #define DIRENT_ERROR 3
384 * Directory iterator flags
387 #define DIRENT_FLAG_INCLUDE_EMPTY 1
388 #define DIRENT_FLAG_INCLUDE_REMOVED 2
390 #define DIRENT_DOT_FILE 1
391 #define DIRENT_DOT_DOT_FILE 2
392 #define DIRENT_OTHER_FILE 3
393 #define DIRENT_DELETED_FILE 4
396 * Inode scan definitions
398 typedef struct ext2_struct_inode_scan *ext2_inode_scan;
403 #define EXT2_SF_CHK_BADBLOCKS 0x0001
404 #define EXT2_SF_BAD_INODE_BLK 0x0002
405 #define EXT2_SF_BAD_EXTRA_BYTES 0x0004
406 #define EXT2_SF_SKIP_MISSING_ITABLE 0x0008
407 #define EXT2_SF_DO_LAZY 0x0010
410 * ext2fs_check_if_mounted flags
412 #define EXT2_MF_MOUNTED 1
413 #define EXT2_MF_ISROOT 2
414 #define EXT2_MF_READONLY 4
415 #define EXT2_MF_SWAP 8
416 #define EXT2_MF_BUSY 16
419 * Ext2/linux mode flags. We define them here so that we don't need
420 * to depend on the OS's sys/stat.h, since we may be compiling on a
423 #define LINUX_S_IFMT 00170000
424 #define LINUX_S_IFSOCK 0140000
425 #define LINUX_S_IFLNK 0120000
426 #define LINUX_S_IFREG 0100000
427 #define LINUX_S_IFBLK 0060000
428 #define LINUX_S_IFDIR 0040000
429 #define LINUX_S_IFCHR 0020000
430 #define LINUX_S_IFIFO 0010000
431 #define LINUX_S_ISUID 0004000
432 #define LINUX_S_ISGID 0002000
433 #define LINUX_S_ISVTX 0001000
435 #define LINUX_S_IRWXU 00700
436 #define LINUX_S_IRUSR 00400
437 #define LINUX_S_IWUSR 00200
438 #define LINUX_S_IXUSR 00100
440 #define LINUX_S_IRWXG 00070
441 #define LINUX_S_IRGRP 00040
442 #define LINUX_S_IWGRP 00020
443 #define LINUX_S_IXGRP 00010
445 #define LINUX_S_IRWXO 00007
446 #define LINUX_S_IROTH 00004
447 #define LINUX_S_IWOTH 00002
448 #define LINUX_S_IXOTH 00001
450 #define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK)
451 #define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG)
452 #define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR)
453 #define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR)
454 #define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK)
455 #define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO)
456 #define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK)
459 * ext2 size of an inode
461 #define EXT2_I_SIZE(i) ((i)->i_size | ((__u64) (i)->i_size_high << 32))
464 * ext2_icount_t abstraction
466 #define EXT2_ICOUNT_OPT_INCREMENT 0x01
468 typedef struct ext2_icount *ext2_icount_t;
471 * Flags for ext2fs_bmap
473 #define BMAP_ALLOC 0x0001
474 #define BMAP_SET 0x0002
477 * Returned flags from ext2fs_bmap
479 #define BMAP_RET_UNINIT 0x0001
482 * Flags for imager.c functions
484 #define IMAGER_FLAG_INODEMAP 1
485 #define IMAGER_FLAG_SPARSEWRITE 2
488 * For checking structure magic numbers...
491 #define EXT2_CHECK_MAGIC(struct, code) \
492 if ((struct)->magic != (code)) return (code)
496 * For ext2 compression support
498 #define EXT2FS_COMPRESSED_BLKADDR ((blk_t) -1)
499 #define HOLE_BLKADDR(_b) ((_b) == 0 || (_b) == EXT2FS_COMPRESSED_BLKADDR)
502 * Features supported by this version of the library
504 #define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\
505 EXT2_FEATURE_COMPAT_IMAGIC_INODES|\
506 EXT3_FEATURE_COMPAT_HAS_JOURNAL|\
507 EXT2_FEATURE_COMPAT_RESIZE_INODE|\
508 EXT2_FEATURE_COMPAT_DIR_INDEX|\
509 EXT2_FEATURE_COMPAT_EXT_ATTR)
511 /* This #ifdef is temporary until compression is fully supported */
512 #ifdef ENABLE_COMPRESSION
513 #ifndef I_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL
514 /* If the below warning bugs you, then have
515 `CPPFLAGS=-DI_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL' in your
516 environment at configure time. */
517 #warning "Compression support is experimental"
519 #define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\
520 EXT2_FEATURE_INCOMPAT_COMPRESSION|\
521 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\
522 EXT2_FEATURE_INCOMPAT_META_BG|\
523 EXT3_FEATURE_INCOMPAT_RECOVER|\
524 EXT3_FEATURE_INCOMPAT_EXTENTS|\
525 EXT4_FEATURE_INCOMPAT_FLEX_BG)
527 #define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\
528 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\
529 EXT2_FEATURE_INCOMPAT_META_BG|\
530 EXT3_FEATURE_INCOMPAT_RECOVER|\
531 EXT3_FEATURE_INCOMPAT_EXTENTS|\
532 EXT4_FEATURE_INCOMPAT_FLEX_BG)
534 #define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\
535 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|\
536 EXT2_FEATURE_RO_COMPAT_LARGE_FILE|\
537 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|\
538 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)
541 * These features are only allowed if EXT2_FLAG_SOFTSUPP_FEATURES is passed
544 #define EXT2_LIB_SOFTSUPP_INCOMPAT (0)
545 #define EXT2_LIB_SOFTSUPP_RO_COMPAT (EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE)
548 * function prototypes
552 extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode,
553 ext2fs_inode_bitmap map, ext2_ino_t *ret);
554 extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal,
555 ext2fs_block_bitmap map, blk_t *ret);
556 extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start,
557 blk_t finish, int num,
558 ext2fs_block_bitmap map,
560 extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal,
561 char *block_buf, blk_t *ret);
562 extern void ext2fs_set_alloc_block_callback(ext2_filsys fs,
563 errcode_t (*func)(ext2_filsys fs,
566 errcode_t (**old)(ext2_filsys fs,
571 extern int ext2fs_reserve_super_and_bgd(ext2_filsys fs,
573 ext2fs_block_bitmap bmap);
574 extern void ext2fs_set_block_alloc_stats_callback(ext2_filsys fs,
575 void (*func)(ext2_filsys fs,
578 void (**old)(ext2_filsys fs,
583 void ext2fs_inode_alloc_stats(ext2_filsys fs, ext2_ino_t ino, int inuse);
584 void ext2fs_inode_alloc_stats2(ext2_filsys fs, ext2_ino_t ino,
585 int inuse, int isdir);
586 void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse);
589 extern errcode_t ext2fs_allocate_tables(ext2_filsys fs);
590 extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group,
591 ext2fs_block_bitmap bmap);
594 extern errcode_t ext2fs_u32_list_create(ext2_u32_list *ret, int size);
595 extern errcode_t ext2fs_u32_list_add(ext2_u32_list bb, __u32 blk);
596 extern int ext2fs_u32_list_find(ext2_u32_list bb, __u32 blk);
597 extern int ext2fs_u32_list_test(ext2_u32_list bb, blk_t blk);
598 extern errcode_t ext2fs_u32_list_iterate_begin(ext2_u32_list bb,
599 ext2_u32_iterate *ret);
600 extern int ext2fs_u32_list_iterate(ext2_u32_iterate iter, blk_t *blk);
601 extern void ext2fs_u32_list_iterate_end(ext2_u32_iterate iter);
602 extern errcode_t ext2fs_u32_copy(ext2_u32_list src, ext2_u32_list *dest);
603 extern int ext2fs_u32_list_equal(ext2_u32_list bb1, ext2_u32_list bb2);
605 extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret,
607 extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb,
609 extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb,
611 extern int ext2fs_u32_list_del(ext2_u32_list bb, __u32 blk);
612 extern void ext2fs_badblocks_list_del(ext2_u32_list bb, __u32 blk);
614 ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb,
615 ext2_badblocks_iterate *ret);
616 extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter,
618 extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter);
619 extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src,
620 ext2_badblocks_list *dest);
621 extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1,
622 ext2_badblocks_list bb2);
623 extern int ext2fs_u32_list_count(ext2_u32_list bb);
626 extern errcode_t badblocks_list_create(badblocks_list *ret, int size);
627 extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk);
628 extern int badblocks_list_test(badblocks_list bb, blk_t blk);
629 extern errcode_t badblocks_list_iterate_begin(badblocks_list bb,
630 badblocks_iterate *ret);
631 extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk);
632 extern void badblocks_list_iterate_end(badblocks_iterate iter);
633 extern void badblocks_list_free(badblocks_list bb);
636 extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs,
637 ext2_badblocks_list bb_list);
640 extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap);
641 extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap);
642 extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src,
643 ext2fs_generic_bitmap *dest);
644 extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs);
645 extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs);
646 extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs);
647 extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs);
648 extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs,
650 ext2fs_block_bitmap *ret);
651 extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs,
653 ext2fs_inode_bitmap *ret);
654 extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap,
655 ext2_ino_t end, ext2_ino_t *oend);
656 extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap,
657 blk_t end, blk_t *oend);
658 extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap);
659 extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap);
660 extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs);
661 extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs);
662 extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end,
663 ext2fs_inode_bitmap bmap);
664 extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end,
665 ext2fs_block_bitmap bmap);
666 extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1,
667 ext2fs_block_bitmap bm2);
668 extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1,
669 ext2fs_inode_bitmap bm2);
670 extern errcode_t ext2fs_set_inode_bitmap_range(ext2fs_inode_bitmap bmap,
671 ext2_ino_t start, unsigned int num,
673 extern errcode_t ext2fs_get_inode_bitmap_range(ext2fs_inode_bitmap bmap,
674 ext2_ino_t start, unsigned int num,
676 extern errcode_t ext2fs_set_block_bitmap_range(ext2fs_block_bitmap bmap,
677 blk_t start, unsigned int num,
679 extern errcode_t ext2fs_get_block_bitmap_range(ext2fs_block_bitmap bmap,
680 blk_t start, unsigned int num,
685 extern errcode_t ext2fs_block_iterate(ext2_filsys fs,
689 int (*func)(ext2_filsys fs,
694 errcode_t ext2fs_block_iterate2(ext2_filsys fs,
698 int (*func)(ext2_filsys fs,
700 e2_blkcnt_t blockcnt,
707 extern errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino,
708 struct ext2_inode *inode,
709 char *block_buf, int bmap_flags,
710 blk_t block, blk_t *phys_blk);
711 extern errcode_t ext2fs_bmap2(ext2_filsys fs, ext2_ino_t ino,
712 struct ext2_inode *inode,
713 char *block_buf, int bmap_flags, blk64_t block,
714 int *ret_flags, blk64_t *phys_blk);
718 extern errcode_t ext2fs_move_blocks(ext2_filsys fs,
719 ext2fs_block_bitmap reserve,
720 ext2fs_block_bitmap alloc_map,
725 extern errcode_t ext2fs_check_desc(ext2_filsys fs);
728 extern errcode_t ext2fs_close(ext2_filsys fs);
729 extern errcode_t ext2fs_flush(ext2_filsys fs);
730 extern int ext2fs_bg_has_super(ext2_filsys fs, int group_block);
731 extern int ext2fs_super_and_bgd_loc(ext2_filsys fs,
733 blk_t *ret_super_blk,
734 blk_t *ret_old_desc_blk,
735 blk_t *ret_new_desc_blk,
737 extern void ext2fs_update_dynamic_rev(ext2_filsys fs);
740 extern void ext2fs_group_desc_csum_set(ext2_filsys fs, dgrp_t group);
741 extern int ext2fs_group_desc_csum_verify(ext2_filsys fs, dgrp_t group);
742 extern errcode_t ext2fs_set_gdt_csum(ext2_filsys fs);
746 extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs);
747 extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist);
748 extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ext2_ino_t ino,
749 blk_t blk, int blockcnt);
750 extern void ext2fs_dblist_sort(ext2_dblist dblist,
751 EXT2_QSORT_TYPE (*sortfunc)(const void *,
753 extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist,
754 int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info,
757 extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ext2_ino_t ino,
758 blk_t blk, int blockcnt);
759 extern errcode_t ext2fs_copy_dblist(ext2_dblist src,
761 extern int ext2fs_dblist_count(ext2_dblist dblist);
762 extern errcode_t ext2fs_dblist_get_last(ext2_dblist dblist,
763 struct ext2_db_entry **entry);
764 extern errcode_t ext2fs_dblist_drop_last(ext2_dblist dblist);
768 ext2fs_dblist_dir_iterate(ext2_dblist dblist,
771 int (*func)(ext2_ino_t dir,
773 struct ext2_dir_entry *dirent,
781 extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block,
783 extern errcode_t ext2fs_read_dir_block2(ext2_filsys fs, blk_t block,
784 void *buf, int flags);
785 extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block,
787 extern errcode_t ext2fs_write_dir_block2(ext2_filsys fs, blk_t block,
788 void *buf, int flags);
791 extern errcode_t ext2fs_dirhash(int version, const char *name, int len,
793 ext2_dirhash_t *ret_hash,
794 ext2_dirhash_t *ret_minor_hash);
798 extern errcode_t ext2fs_dir_iterate(ext2_filsys fs,
802 int (*func)(struct ext2_dir_entry *dirent,
808 extern errcode_t ext2fs_dir_iterate2(ext2_filsys fs,
812 int (*func)(ext2_ino_t dir,
814 struct ext2_dir_entry *dirent,
822 extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest);
825 extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir);
828 extern __u32 ext2fs_ext_attr_hash_entry(struct ext2_ext_attr_entry *entry,
830 extern errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf);
831 extern errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block,
833 extern errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk,
835 int adjust, __u32 *newcount);
838 extern errcode_t ext2fs_extent_header_verify(void *ptr, int size);
839 extern errcode_t ext2fs_extent_open(ext2_filsys fs, ext2_ino_t ino,
840 ext2_extent_handle_t *handle);
841 extern void ext2fs_extent_free(ext2_extent_handle_t handle);
842 extern errcode_t ext2fs_extent_get(ext2_extent_handle_t handle,
843 int flags, struct ext2fs_extent *extent);
844 extern errcode_t ext2fs_extent_replace(ext2_extent_handle_t handle, int flags,
845 struct ext2fs_extent *extent);
846 extern errcode_t ext2fs_extent_insert(ext2_extent_handle_t handle, int flags,
847 struct ext2fs_extent *extent);
848 extern errcode_t ext2fs_extent_set_bmap(ext2_extent_handle_t handle,
849 blk64_t logical, blk64_t physical,
851 extern errcode_t ext2fs_extent_delete(ext2_extent_handle_t handle, int flags);
852 extern errcode_t ext2fs_extent_get_info(ext2_extent_handle_t handle,
853 struct ext2_extent_info *info);
854 extern errcode_t ext2fs_extent_goto(ext2_extent_handle_t handle,
858 extern errcode_t ext2fs_file_open2(ext2_filsys fs, ext2_ino_t ino,
859 struct ext2_inode *inode,
860 int flags, ext2_file_t *ret);
861 extern errcode_t ext2fs_file_open(ext2_filsys fs, ext2_ino_t ino,
862 int flags, ext2_file_t *ret);
863 extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file);
864 extern errcode_t ext2fs_file_close(ext2_file_t file);
865 extern errcode_t ext2fs_file_flush(ext2_file_t file);
866 extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf,
867 unsigned int wanted, unsigned int *got);
868 extern errcode_t ext2fs_file_write(ext2_file_t file, const void *buf,
869 unsigned int nbytes, unsigned int *written);
870 extern errcode_t ext2fs_file_llseek(ext2_file_t file, __u64 offset,
871 int whence, __u64 *ret_pos);
872 extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset,
873 int whence, ext2_off_t *ret_pos);
874 errcode_t ext2fs_file_get_lsize(ext2_file_t file, __u64 *ret_size);
875 extern ext2_off_t ext2fs_file_get_size(ext2_file_t file);
876 extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size);
879 extern char *ext2fs_find_block_device(dev_t device);
882 extern errcode_t ext2fs_sync_device(int fd, int flushb);
885 extern void ext2fs_free(ext2_filsys fs);
886 extern void ext2fs_free_dblist(ext2_dblist dblist);
887 extern void ext2fs_badblocks_list_free(ext2_badblocks_list bb);
888 extern void ext2fs_u32_list_free(ext2_u32_list bb);
891 extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap);
892 extern errcode_t ext2fs_make_generic_bitmap(errcode_t magic, ext2_filsys fs,
893 __u32 start, __u32 end,
895 const char *descr, char *init_map,
896 ext2fs_generic_bitmap *ret);
897 extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start,
901 ext2fs_generic_bitmap *ret);
902 extern errcode_t ext2fs_copy_generic_bitmap(ext2fs_generic_bitmap src,
903 ext2fs_generic_bitmap *dest);
904 extern void ext2fs_clear_generic_bitmap(ext2fs_generic_bitmap bitmap);
905 extern errcode_t ext2fs_fudge_generic_bitmap_end(ext2fs_inode_bitmap bitmap,
910 extern void ext2fs_set_generic_bitmap_padding(ext2fs_generic_bitmap map);
911 extern errcode_t ext2fs_resize_generic_bitmap(errcode_t magic,
914 ext2fs_generic_bitmap bmap);
915 extern errcode_t ext2fs_compare_generic_bitmap(errcode_t magic, errcode_t neq,
916 ext2fs_generic_bitmap bm1,
917 ext2fs_generic_bitmap bm2);
918 extern errcode_t ext2fs_get_generic_bitmap_range(ext2fs_generic_bitmap bmap,
920 __u32 start, __u32 num,
922 extern errcode_t ext2fs_set_generic_bitmap_range(ext2fs_generic_bitmap bmap,
924 __u32 start, __u32 num,
928 extern errcode_t ext2fs_get_device_size(const char *file, int blocksize,
932 errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize);
935 errcode_t ext2fs_iblk_add_blocks(ext2_filsys fs, struct ext2_inode *inode,
937 errcode_t ext2fs_iblk_sub_blocks(ext2_filsys fs, struct ext2_inode *inode,
939 errcode_t ext2fs_iblk_set(ext2_filsys fs, struct ext2_inode *inode, blk64_t b);
942 extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags);
943 extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags);
944 extern errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd, int flags);
945 extern errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd, int flags);
946 extern errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags);
947 extern errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags);
950 errcode_t ext2fs_read_ind_block(ext2_filsys fs, blk_t blk, void *buf);
951 errcode_t ext2fs_write_ind_block(ext2_filsys fs, blk_t blk, void *buf);
954 extern errcode_t ext2fs_initialize(const char *name, int flags,
955 struct ext2_super_block *param,
956 io_manager manager, ext2_filsys *ret_fs);
959 extern void ext2fs_free_icount(ext2_icount_t icount);
960 extern errcode_t ext2fs_create_icount_tdb(ext2_filsys fs, char *tdb_dir,
961 int flags, ext2_icount_t *ret);
962 extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags,
964 ext2_icount_t hint, ext2_icount_t *ret);
965 extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags,
968 extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ext2_ino_t ino,
970 extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ext2_ino_t ino,
972 extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ext2_ino_t ino,
974 extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ext2_ino_t ino,
976 extern ext2_ino_t ext2fs_get_icount_size(ext2_icount_t icount);
977 errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *);
980 extern errcode_t ext2fs_flush_icache(ext2_filsys fs);
981 extern errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan,
983 struct ext2_inode *inode,
985 extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks,
986 ext2_inode_scan *ret_scan);
987 extern void ext2fs_close_inode_scan(ext2_inode_scan scan);
988 extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino,
989 struct ext2_inode *inode);
990 extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan,
992 extern void ext2fs_set_inode_callback
993 (ext2_inode_scan scan,
994 errcode_t (*done_group)(ext2_filsys fs,
995 ext2_inode_scan scan,
998 void *done_group_data);
999 extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags,
1001 extern errcode_t ext2fs_read_inode_full(ext2_filsys fs, ext2_ino_t ino,
1002 struct ext2_inode * inode,
1004 extern errcode_t ext2fs_read_inode (ext2_filsys fs, ext2_ino_t ino,
1005 struct ext2_inode * inode);
1006 extern errcode_t ext2fs_write_inode_full(ext2_filsys fs, ext2_ino_t ino,
1007 struct ext2_inode * inode,
1009 extern errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino,
1010 struct ext2_inode * inode);
1011 extern errcode_t ext2fs_write_new_inode(ext2_filsys fs, ext2_ino_t ino,
1012 struct ext2_inode * inode);
1013 extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks);
1014 extern errcode_t ext2fs_check_directory(ext2_filsys fs, ext2_ino_t ino);
1017 extern io_manager inode_io_manager;
1018 extern errcode_t ext2fs_inode_io_intern(ext2_filsys fs, ext2_ino_t ino,
1020 extern errcode_t ext2fs_inode_io_intern2(ext2_filsys fs, ext2_ino_t ino,
1021 struct ext2_inode *inode,
1025 extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags);
1026 extern errcode_t ext2fs_check_mount_point(const char *device, int *mount_flags,
1027 char *mtpt, int mtlen);
1030 extern errcode_t ext2fs_lookup(ext2_filsys fs, ext2_ino_t dir, const char *name,
1031 int namelen, char *buf, ext2_ino_t *inode);
1032 extern errcode_t ext2fs_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
1033 const char *name, ext2_ino_t *inode);
1034 errcode_t ext2fs_namei_follow(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
1035 const char *name, ext2_ino_t *inode);
1036 extern errcode_t ext2fs_follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
1037 ext2_ino_t inode, ext2_ino_t *res_inode);
1040 int ext2fs_native_flag(void);
1043 extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino,
1044 ext2_ino_t parent_ino, char **block);
1047 extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum,
1051 extern errcode_t ext2fs_zero_blocks(ext2_filsys fs, blk_t blk, int num,
1052 blk_t *ret_blk, int *ret_count);
1053 extern errcode_t ext2fs_create_journal_superblock(ext2_filsys fs,
1054 __u32 size, int flags,
1056 extern errcode_t ext2fs_add_journal_device(ext2_filsys fs,
1057 ext2_filsys journal_dev);
1058 extern errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t size,
1060 extern int ext2fs_default_journal_size(__u64 blocks);
1063 extern errcode_t ext2fs_open(const char *name, int flags, int superblock,
1064 unsigned int block_size, io_manager manager,
1065 ext2_filsys *ret_fs);
1066 extern errcode_t ext2fs_open2(const char *name, const char *io_options,
1067 int flags, int superblock,
1068 unsigned int block_size, io_manager manager,
1069 ext2_filsys *ret_fs);
1070 extern blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block,
1072 errcode_t ext2fs_get_data_io(ext2_filsys fs, io_channel *old_io);
1073 errcode_t ext2fs_set_data_io(ext2_filsys fs, io_channel new_io);
1074 errcode_t ext2fs_rewrite_to_io(ext2_filsys fs, io_channel new_io);
1076 /* get_pathname.c */
1077 extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino,
1081 errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name,
1082 ext2_ino_t ino, int flags);
1083 errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir, const char *name,
1084 ext2_ino_t ino, int flags);
1087 extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs,
1088 ext2_badblocks_list *bb_list);
1090 /* read_bb_file.c */
1091 extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f,
1092 ext2_badblocks_list *bb_list,
1094 void (*invalid)(ext2_filsys fs,
1098 extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f,
1099 ext2_badblocks_list *bb_list,
1100 void (*invalid)(ext2_filsys fs,
1104 extern errcode_t ext2fs_create_resize_inode(ext2_filsys fs);
1107 extern void ext2fs_swap_ext_attr(char *to, char *from, int bufsize,
1109 extern void ext2fs_swap_ext_attr_header(struct ext2_ext_attr_header *to_header,
1110 struct ext2_ext_attr_header *from_hdr);
1111 extern void ext2fs_swap_ext_attr_entry(struct ext2_ext_attr_entry *to_entry,
1112 struct ext2_ext_attr_entry *from_entry);
1113 extern void ext2fs_swap_super(struct ext2_super_block * super);
1114 extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp);
1115 extern void ext2fs_swap_inode_full(ext2_filsys fs, struct ext2_inode_large *t,
1116 struct ext2_inode_large *f, int hostorder,
1118 extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t,
1119 struct ext2_inode *f, int hostorder);
1122 extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode);
1125 extern int ext2fs_parse_version_string(const char *ver_string);
1126 extern int ext2fs_get_library_version(const char **ver_string,
1127 const char **date_string);
1129 /* write_bb_file.c */
1130 extern errcode_t ext2fs_write_bb_FILE(ext2_badblocks_list bb_list,
1135 /* inline functions */
1136 extern errcode_t ext2fs_get_mem(unsigned long size, void *ptr);
1137 extern errcode_t ext2fs_get_array(unsigned long count, unsigned long size, void *ptr);
1138 extern errcode_t ext2fs_free_mem(void *ptr);
1139 extern errcode_t ext2fs_resize_mem(unsigned long old_size,
1140 unsigned long size, void *ptr);
1141 extern void ext2fs_mark_super_dirty(ext2_filsys fs);
1142 extern void ext2fs_mark_changed(ext2_filsys fs);
1143 extern int ext2fs_test_changed(ext2_filsys fs);
1144 extern void ext2fs_mark_valid(ext2_filsys fs);
1145 extern void ext2fs_unmark_valid(ext2_filsys fs);
1146 extern int ext2fs_test_valid(ext2_filsys fs);
1147 extern void ext2fs_mark_ib_dirty(ext2_filsys fs);
1148 extern void ext2fs_mark_bb_dirty(ext2_filsys fs);
1149 extern int ext2fs_test_ib_dirty(ext2_filsys fs);
1150 extern int ext2fs_test_bb_dirty(ext2_filsys fs);
1151 extern int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk);
1152 extern int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino);
1153 extern blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group);
1154 extern blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group);
1155 extern blk_t ext2fs_inode_data_blocks(ext2_filsys fs,
1156 struct ext2_inode *inode);
1157 extern unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b);
1160 * The actual inlined functions definitions themselves...
1162 * If NO_INLINE_FUNCS is defined, then we won't try to do inline
1165 #if (defined(INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS))
1166 #ifdef INCLUDE_INLINE_FUNCS
1167 #define _INLINE_ extern
1170 #define _INLINE_ extern __inline__
1171 #else /* For Watcom C */
1172 #define _INLINE_ extern inline
1176 #ifndef EXT2_CUSTOM_MEMORY_ROUTINES
1181 _INLINE_ errcode_t ext2fs_get_mem(unsigned long size, void *ptr)
1187 return EXT2_ET_NO_MEMORY;
1188 memcpy(ptr, &pp, sizeof (pp));
1192 _INLINE_ errcode_t ext2fs_get_array(unsigned long count, unsigned long size, void *ptr)
1194 if (count && (-1UL)/count<size)
1195 return EXT2_ET_NO_MEMORY; //maybe define EXT2_ET_OVERFLOW ?
1196 return ext2fs_get_mem(count*size, ptr);
1202 _INLINE_ errcode_t ext2fs_free_mem(void *ptr)
1206 memcpy(&p, ptr, sizeof(p));
1209 memcpy(ptr, &p, sizeof(p));
1216 _INLINE_ errcode_t ext2fs_resize_mem(unsigned long EXT2FS_ATTR((unused)) old_size,
1217 unsigned long size, void *ptr)
1221 /* Use "memcpy" for pointer assignments here to avoid problems
1222 * with C99 strict type aliasing rules. */
1223 memcpy(&p, ptr, sizeof(p));
1224 p = realloc(p, size);
1226 return EXT2_ET_NO_MEMORY;
1227 memcpy(ptr, &p, sizeof(p));
1230 #endif /* Custom memory routines */
1233 * Mark a filesystem superblock as dirty
1235 _INLINE_ void ext2fs_mark_super_dirty(ext2_filsys fs)
1237 fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_CHANGED;
1241 * Mark a filesystem as changed
1243 _INLINE_ void ext2fs_mark_changed(ext2_filsys fs)
1245 fs->flags |= EXT2_FLAG_CHANGED;
1249 * Check to see if a filesystem has changed
1251 _INLINE_ int ext2fs_test_changed(ext2_filsys fs)
1253 return (fs->flags & EXT2_FLAG_CHANGED);
1257 * Mark a filesystem as valid
1259 _INLINE_ void ext2fs_mark_valid(ext2_filsys fs)
1261 fs->flags |= EXT2_FLAG_VALID;
1265 * Mark a filesystem as NOT valid
1267 _INLINE_ void ext2fs_unmark_valid(ext2_filsys fs)
1269 fs->flags &= ~EXT2_FLAG_VALID;
1273 * Check to see if a filesystem is valid
1275 _INLINE_ int ext2fs_test_valid(ext2_filsys fs)
1277 return (fs->flags & EXT2_FLAG_VALID);
1281 * Mark the inode bitmap as dirty
1283 _INLINE_ void ext2fs_mark_ib_dirty(ext2_filsys fs)
1285 fs->flags |= EXT2_FLAG_IB_DIRTY | EXT2_FLAG_CHANGED;
1289 * Mark the block bitmap as dirty
1291 _INLINE_ void ext2fs_mark_bb_dirty(ext2_filsys fs)
1293 fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_CHANGED;
1297 * Check to see if a filesystem's inode bitmap is dirty
1299 _INLINE_ int ext2fs_test_ib_dirty(ext2_filsys fs)
1301 return (fs->flags & EXT2_FLAG_IB_DIRTY);
1305 * Check to see if a filesystem's block bitmap is dirty
1307 _INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs)
1309 return (fs->flags & EXT2_FLAG_BB_DIRTY);
1313 * Return the group # of a block
1315 _INLINE_ int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk)
1317 return (blk - fs->super->s_first_data_block) /
1318 fs->super->s_blocks_per_group;
1322 * Return the group # of an inode number
1324 _INLINE_ int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino)
1326 return (ino - 1) / fs->super->s_inodes_per_group;
1330 * Return the first block (inclusive) in a group
1332 _INLINE_ blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group)
1334 return fs->super->s_first_data_block +
1335 (group * fs->super->s_blocks_per_group);
1339 * Return the last block (inclusive) in a group
1341 _INLINE_ blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group)
1343 return (group == fs->group_desc_count - 1 ?
1344 fs->super->s_blocks_count - 1 :
1345 ext2fs_group_first_block(fs, group) +
1346 (fs->super->s_blocks_per_group - 1));
1349 _INLINE_ blk_t ext2fs_inode_data_blocks(ext2_filsys fs,
1350 struct ext2_inode *inode)
1352 return inode->i_blocks -
1353 (inode->i_file_acl ? fs->blocksize >> 9 : 0);
1357 * This is an efficient, overflow safe way of calculating ceil((1.0 * a) / b)
1359 _INLINE_ unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b)
1363 return ((a - 1) / b) + 1;
1372 #endif /* _EXT2FS_EXT2FS_H */