4 * Copyright (C) 1993, 1994, 1995, 1996 Theodore Ts'o.
7 * This file may be redistributed under the terms of the GNU Library
8 * General Public License, version 2.
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>
57 #if EXT2_FLAT_INCLUDES
60 #include "ext3_extents.h"
62 #include <ext2fs/ext2_types.h>
63 #include <ext2fs/ext2_fs.h>
64 #include <ext2fs/ext3_extents.h>
65 #endif /* EXT2_FLAT_INCLUDES */
67 typedef __u32 ext2_ino_t;
69 typedef __u64 blk64_t;
71 typedef __u32 ext2_off_t;
72 typedef __s64 e2_blkcnt_t;
73 typedef __u32 ext2_dirhash_t;
75 #if EXT2_FLAT_INCLUDES
79 #include "ext2_ext_attr.h"
81 #include <et/com_err.h>
82 #include <ext2fs/ext2_io.h>
83 #include <ext2fs/ext2_err.h>
84 #include <ext2fs/ext2_ext_attr.h>
88 * Portability help for Microsoft Visual C++
91 #define EXT2_QSORT_TYPE int __cdecl
93 #define EXT2_QSORT_TYPE int
96 typedef struct struct_ext2_filsys *ext2_filsys;
98 #define EXT2FS_MARK_ERROR 0
99 #define EXT2FS_UNMARK_ERROR 1
100 #define EXT2FS_TEST_ERROR 2
102 typedef struct ext2fs_struct_generic_bitmap *ext2fs_generic_bitmap;
103 typedef struct ext2fs_struct_generic_bitmap *ext2fs_inode_bitmap;
104 typedef struct ext2fs_struct_generic_bitmap *ext2fs_block_bitmap;
106 #define EXT2_FIRST_INODE(s) EXT2_FIRST_INO(s)
110 * Badblocks list definitions
113 typedef struct ext2_struct_u32_list *ext2_badblocks_list;
114 typedef struct ext2_struct_u32_iterate *ext2_badblocks_iterate;
116 typedef struct ext2_struct_u32_list *ext2_u32_list;
117 typedef struct ext2_struct_u32_iterate *ext2_u32_iterate;
120 typedef struct ext2_struct_u32_list *badblocks_list;
121 typedef struct ext2_struct_u32_iterate *badblocks_iterate;
123 #define BADBLOCKS_FLAG_DIRTY 1
126 * ext2_dblist structure and abstractions (see dblist.c)
128 struct ext2_db_entry {
134 typedef struct ext2_struct_dblist *ext2_dblist;
136 #define DBLIST_ABORT 1
139 * ext2_fileio definitions
142 #define EXT2_FILE_WRITE 0x0001
143 #define EXT2_FILE_CREATE 0x0002
145 #define EXT2_FILE_MASK 0x00FF
147 #define EXT2_FILE_BUF_DIRTY 0x4000
148 #define EXT2_FILE_BUF_VALID 0x2000
150 typedef struct ext2_file *ext2_file_t;
152 #define EXT2_SEEK_SET 0
153 #define EXT2_SEEK_CUR 1
154 #define EXT2_SEEK_END 2
157 * Flags for the ext2_filsys structure and for ext2fs_open()
159 #define EXT2_FLAG_RW 0x01
160 #define EXT2_FLAG_CHANGED 0x02
161 #define EXT2_FLAG_DIRTY 0x04
162 #define EXT2_FLAG_VALID 0x08
163 #define EXT2_FLAG_IB_DIRTY 0x10
164 #define EXT2_FLAG_BB_DIRTY 0x20
165 #define EXT2_FLAG_SWAP_BYTES 0x40
166 #define EXT2_FLAG_SWAP_BYTES_READ 0x80
167 #define EXT2_FLAG_SWAP_BYTES_WRITE 0x100
168 #define EXT2_FLAG_MASTER_SB_ONLY 0x200
169 #define EXT2_FLAG_FORCE 0x400
170 #define EXT2_FLAG_SUPER_ONLY 0x800
171 #define EXT2_FLAG_JOURNAL_DEV_OK 0x1000
172 #define EXT2_FLAG_IMAGE_FILE 0x2000
173 #define EXT2_FLAG_EXCLUSIVE 0x4000
174 #define EXT2_FLAG_SOFTSUPP_FEATURES 0x8000
175 #define EXT2_FLAG_NOFREE_ON_ERROR 0x10000
176 #define EXT2_FLAG_DIRECT_IO 0x80000
179 * Special flag in the ext2 inode i_flag field that means that this is
180 * a new inode. (So that ext2_write_inode() can clear extra fields.)
182 #define EXT2_NEW_INODE_FL 0x80000000
185 * Flags for mkjournal
187 * EXT2_MKJOURNAL_V1_SUPER Make a (deprecated) V1 journal superblock
189 #define EXT2_MKJOURNAL_V1_SUPER 0x0000001
191 struct struct_ext2_filsys {
196 struct ext2_super_block * super;
197 unsigned int blocksize;
199 dgrp_t group_desc_count;
200 unsigned long desc_blocks;
201 struct ext2_group_desc * group_desc;
202 int inode_blocks_per_group;
203 ext2fs_inode_bitmap inode_map;
204 ext2fs_block_bitmap block_map;
205 errcode_t (*get_blocks)(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks);
206 errcode_t (*check_directory)(ext2_filsys fs, ext2_ino_t ino);
207 errcode_t (*write_bitmaps)(ext2_filsys fs);
208 errcode_t (*read_inode)(ext2_filsys fs, ext2_ino_t ino,
209 struct ext2_inode *inode);
210 errcode_t (*write_inode)(ext2_filsys fs, ext2_ino_t ino,
211 struct ext2_inode *inode);
212 ext2_badblocks_list badblocks;
214 __u32 stride; /* for mke2fs */
215 struct ext2_super_block * orig_super;
216 struct ext2_image_hdr * image_header;
219 int cluster_ratio_bits;
221 * Reserved for future expansion
226 * Reserved for the use of the calling application.
233 struct ext2_inode_cache *icache;
237 * More callback functions
239 errcode_t (*get_alloc_block)(ext2_filsys fs, blk64_t goal,
241 void (*block_alloc_stats)(ext2_filsys fs, blk64_t blk, int inuse);
244 #if EXT2_FLAT_INCLUDES
245 #include "e2_bitops.h"
247 #include <ext2fs/bitops.h>
251 * Return flags for the block iterator functions
253 #define BLOCK_CHANGED 1
254 #define BLOCK_ABORT 2
255 #define BLOCK_ERROR 4
258 * Block interate flags
260 * BLOCK_FLAG_APPEND, or BLOCK_FLAG_HOLE, indicates that the interator
261 * function should be called on blocks where the block number is zero.
262 * This is used by ext2fs_expand_dir() to be able to add a new block
263 * to an inode. It can also be used for programs that want to be able
264 * to deal with files that contain "holes".
266 * BLOCK_FLAG_DEPTH_TRAVERSE indicates that the iterator function for
267 * the indirect, doubly indirect, etc. blocks should be called after
268 * all of the blocks containined in the indirect blocks are processed.
269 * This is useful if you are going to be deallocating blocks from an
272 * BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be
273 * called for data blocks only.
275 * BLOCK_FLAG_READ_ONLY is a promise by the caller that it will not
276 * modify returned block number.
278 * BLOCK_FLAG_NO_LARGE is for internal use only. It informs
279 * ext2fs_block_iterate2 that large files won't be accepted.
281 #define BLOCK_FLAG_APPEND 1
282 #define BLOCK_FLAG_HOLE 1
283 #define BLOCK_FLAG_DEPTH_TRAVERSE 2
284 #define BLOCK_FLAG_DATA_ONLY 4
285 #define BLOCK_FLAG_READ_ONLY 8
287 #define BLOCK_FLAG_NO_LARGE 0x1000
290 * Magic "block count" return values for the block iterator function.
292 #define BLOCK_COUNT_IND (-1)
293 #define BLOCK_COUNT_DIND (-2)
294 #define BLOCK_COUNT_TIND (-3)
295 #define BLOCK_COUNT_TRANSLATOR (-4)
299 * Flags for ext2fs_move_blocks
301 #define EXT2_BMOVE_GET_DBLIST 0x0001
302 #define EXT2_BMOVE_DEBUG 0x0002
306 * Generic (non-filesystem layout specific) extents structure
309 #define EXT2_EXTENT_FLAGS_LEAF 0x0001
310 #define EXT2_EXTENT_FLAGS_UNINIT 0x0002
311 #define EXT2_EXTENT_FLAGS_SECOND_VISIT 0x0004
313 struct ext2fs_extent {
314 blk64_t e_pblk; /* first physical block */
315 blk64_t e_lblk; /* first logical block extent covers */
316 __u32 e_len; /* number of blocks covered by extent */
317 __u32 e_flags; /* extent flags */
320 typedef struct ext2_extent_handle *ext2_extent_handle_t;
321 typedef struct ext2_extent_path *ext2_extent_path_t;
324 * Flags used by ext2fs_extent_get()
326 #define EXT2_EXTENT_CURRENT 0x0000
327 #define EXT2_EXTENT_MOVE_MASK 0x000F
328 #define EXT2_EXTENT_ROOT 0x0001
329 #define EXT2_EXTENT_LAST_LEAF 0x0002
330 #define EXT2_EXTENT_FIRST_SIB 0x0003
331 #define EXT2_EXTENT_LAST_SIB 0x0004
332 #define EXT2_EXTENT_NEXT_SIB 0x0005
333 #define EXT2_EXTENT_PREV_SIB 0x0006
334 #define EXT2_EXTENT_NEXT_LEAF 0x0007
335 #define EXT2_EXTENT_PREV_LEAF 0x0008
336 #define EXT2_EXTENT_NEXT 0x0009
337 #define EXT2_EXTENT_PREV 0x000A
338 #define EXT2_EXTENT_UP 0x000B
339 #define EXT2_EXTENT_DOWN 0x000C
340 #define EXT2_EXTENT_DOWN_AND_LAST 0x000D
343 * Flags used by ext2fs_extent_insert()
345 #define EXT2_EXTENT_INSERT_AFTER 0x0001 /* insert after handle loc'n */
346 #define EXT2_EXTENT_INSERT_NOSPLIT 0x0002 /* insert may not cause split */
349 * Flags used by ext2fs_extent_delete()
351 #define EXT2_EXTENT_DELETE_KEEP_EMPTY 0x001 /* keep node if last extnt gone */
354 * Flags used by ext2fs_extent_set_bmap()
356 #define EXT2_EXTENT_SET_BMAP_UNINIT 0x0001
359 * Data structure returned by ext2fs_extent_get_info()
361 struct ext2_extent_info {
371 __u32 max_uninit_len;
375 * Flags for directory block reading and writing functions
377 #define EXT2_DIRBLOCK_V2_STRUCT 0x0001
380 * Return flags for the directory iterator functions
382 #define DIRENT_CHANGED 1
383 #define DIRENT_ABORT 2
384 #define DIRENT_ERROR 3
387 * Directory iterator flags
390 #define DIRENT_FLAG_INCLUDE_EMPTY 1
391 #define DIRENT_FLAG_INCLUDE_REMOVED 2
393 #define DIRENT_DOT_FILE 1
394 #define DIRENT_DOT_DOT_FILE 2
395 #define DIRENT_OTHER_FILE 3
396 #define DIRENT_DELETED_FILE 4
399 * Inode scan definitions
401 typedef struct ext2_struct_inode_scan *ext2_inode_scan;
406 #define EXT2_SF_CHK_BADBLOCKS 0x0001
407 #define EXT2_SF_BAD_INODE_BLK 0x0002
408 #define EXT2_SF_BAD_EXTRA_BYTES 0x0004
409 #define EXT2_SF_SKIP_MISSING_ITABLE 0x0008
410 #define EXT2_SF_DO_LAZY 0x0010
413 * ext2fs_check_if_mounted flags
415 #define EXT2_MF_MOUNTED 1
416 #define EXT2_MF_ISROOT 2
417 #define EXT2_MF_READONLY 4
418 #define EXT2_MF_SWAP 8
419 #define EXT2_MF_BUSY 16
422 * Ext2/linux mode flags. We define them here so that we don't need
423 * to depend on the OS's sys/stat.h, since we may be compiling on a
426 #define LINUX_S_IFMT 00170000
427 #define LINUX_S_IFSOCK 0140000
428 #define LINUX_S_IFLNK 0120000
429 #define LINUX_S_IFREG 0100000
430 #define LINUX_S_IFBLK 0060000
431 #define LINUX_S_IFDIR 0040000
432 #define LINUX_S_IFCHR 0020000
433 #define LINUX_S_IFIFO 0010000
434 #define LINUX_S_ISUID 0004000
435 #define LINUX_S_ISGID 0002000
436 #define LINUX_S_ISVTX 0001000
438 #define LINUX_S_IRWXU 00700
439 #define LINUX_S_IRUSR 00400
440 #define LINUX_S_IWUSR 00200
441 #define LINUX_S_IXUSR 00100
443 #define LINUX_S_IRWXG 00070
444 #define LINUX_S_IRGRP 00040
445 #define LINUX_S_IWGRP 00020
446 #define LINUX_S_IXGRP 00010
448 #define LINUX_S_IRWXO 00007
449 #define LINUX_S_IROTH 00004
450 #define LINUX_S_IWOTH 00002
451 #define LINUX_S_IXOTH 00001
453 #define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK)
454 #define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG)
455 #define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR)
456 #define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR)
457 #define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK)
458 #define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO)
459 #define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK)
462 * ext2 size of an inode
464 #define EXT2_I_SIZE(i) ((i)->i_size | ((__u64) (i)->i_size_high << 32))
467 * ext2_icount_t abstraction
469 #define EXT2_ICOUNT_OPT_INCREMENT 0x01
471 typedef struct ext2_icount *ext2_icount_t;
474 * Flags for ext2fs_bmap
476 #define BMAP_ALLOC 0x0001
477 #define BMAP_SET 0x0002
480 * Returned flags from ext2fs_bmap
482 #define BMAP_RET_UNINIT 0x0001
485 * Flags for imager.c functions
487 #define IMAGER_FLAG_INODEMAP 1
488 #define IMAGER_FLAG_SPARSEWRITE 2
491 * For checking structure magic numbers...
494 #define EXT2_CHECK_MAGIC(struct, code) \
495 if ((struct)->magic != (code)) return (code)
499 * For ext2 compression support
501 #define EXT2FS_COMPRESSED_BLKADDR ((blk_t) -1)
502 #define HOLE_BLKADDR(_b) ((_b) == 0 || (_b) == EXT2FS_COMPRESSED_BLKADDR)
505 * Features supported by this version of the library
507 #define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\
508 EXT2_FEATURE_COMPAT_IMAGIC_INODES|\
509 EXT3_FEATURE_COMPAT_HAS_JOURNAL|\
510 EXT2_FEATURE_COMPAT_RESIZE_INODE|\
511 EXT2_FEATURE_COMPAT_DIR_INDEX|\
512 EXT2_FEATURE_COMPAT_EXT_ATTR)
514 /* This #ifdef is temporary until compression is fully supported */
515 #ifdef ENABLE_COMPRESSION
516 #ifndef I_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL
517 /* If the below warning bugs you, then have
518 `CPPFLAGS=-DI_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL' in your
519 environment at configure time. */
520 #warning "Compression support is experimental"
522 #define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\
523 EXT2_FEATURE_INCOMPAT_COMPRESSION|\
524 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\
525 EXT2_FEATURE_INCOMPAT_META_BG|\
526 EXT3_FEATURE_INCOMPAT_RECOVER|\
527 EXT3_FEATURE_INCOMPAT_EXTENTS|\
528 EXT4_FEATURE_INCOMPAT_FLEX_BG)
530 #define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\
531 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\
532 EXT2_FEATURE_INCOMPAT_META_BG|\
533 EXT3_FEATURE_INCOMPAT_RECOVER|\
534 EXT3_FEATURE_INCOMPAT_EXTENTS|\
535 EXT4_FEATURE_INCOMPAT_FLEX_BG)
537 #define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\
538 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|\
539 EXT2_FEATURE_RO_COMPAT_LARGE_FILE|\
540 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|\
541 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|\
542 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)
545 * These features are only allowed if EXT2_FLAG_SOFTSUPP_FEATURES is passed
548 #define EXT2_LIB_SOFTSUPP_INCOMPAT (0)
549 #define EXT2_LIB_SOFTSUPP_RO_COMPAT (EXT4_FEATURE_RO_COMPAT_BIGALLOC)
552 /* Translate a block number to a cluster number */
553 #define EXT2FS_CLUSTER_RATIO(fs) (1 << (fs)->cluster_ratio_bits)
554 #define EXT2FS_CLUSTER_MASK(fs) (EXT2FS_CLUSTER_RATIO(fs) - 1)
555 #define EXT2FS_B2C(fs, blk) ((blk) >> (fs)->cluster_ratio_bits)
556 /* Translate a cluster number to a block number */
557 #define EXT2FS_C2B(fs, cluster) ((cluster) << (fs)->cluster_ratio_bits)
558 /* Translate # of blks to # of clusters */
559 #define EXT2FS_NUM_B2C(fs, blks) (((blks) + EXT2FS_CLUSTER_MASK(fs)) >> \
560 (fs)->cluster_ratio_bits)
563 * function prototypes
567 extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode,
568 ext2fs_inode_bitmap map, ext2_ino_t *ret);
569 extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal,
570 ext2fs_block_bitmap map, blk_t *ret);
571 extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start,
572 blk_t finish, int num,
573 ext2fs_block_bitmap map,
575 extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal,
576 char *block_buf, blk_t *ret);
577 extern void ext2fs_set_alloc_block_callback(ext2_filsys fs,
578 errcode_t (*func)(ext2_filsys fs,
581 errcode_t (**old)(ext2_filsys fs,
586 extern int ext2fs_reserve_super_and_bgd(ext2_filsys fs,
588 ext2fs_block_bitmap bmap);
589 extern void ext2fs_set_block_alloc_stats_callback(ext2_filsys fs,
590 void (*func)(ext2_filsys fs,
593 void (**old)(ext2_filsys fs,
598 void ext2fs_inode_alloc_stats(ext2_filsys fs, ext2_ino_t ino, int inuse);
599 void ext2fs_inode_alloc_stats2(ext2_filsys fs, ext2_ino_t ino,
600 int inuse, int isdir);
601 void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse);
604 extern errcode_t ext2fs_allocate_tables(ext2_filsys fs);
605 extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group,
606 ext2fs_block_bitmap bmap);
609 extern errcode_t ext2fs_u32_list_create(ext2_u32_list *ret, int size);
610 extern errcode_t ext2fs_u32_list_add(ext2_u32_list bb, __u32 blk);
611 extern int ext2fs_u32_list_find(ext2_u32_list bb, __u32 blk);
612 extern int ext2fs_u32_list_test(ext2_u32_list bb, blk_t blk);
613 extern errcode_t ext2fs_u32_list_iterate_begin(ext2_u32_list bb,
614 ext2_u32_iterate *ret);
615 extern int ext2fs_u32_list_iterate(ext2_u32_iterate iter, blk_t *blk);
616 extern void ext2fs_u32_list_iterate_end(ext2_u32_iterate iter);
617 extern errcode_t ext2fs_u32_copy(ext2_u32_list src, ext2_u32_list *dest);
618 extern int ext2fs_u32_list_equal(ext2_u32_list bb1, ext2_u32_list bb2);
620 extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret,
622 extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb,
624 extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb,
626 extern int ext2fs_u32_list_del(ext2_u32_list bb, __u32 blk);
627 extern void ext2fs_badblocks_list_del(ext2_u32_list bb, __u32 blk);
629 ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb,
630 ext2_badblocks_iterate *ret);
631 extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter,
633 extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter);
634 extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src,
635 ext2_badblocks_list *dest);
636 extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1,
637 ext2_badblocks_list bb2);
638 extern int ext2fs_u32_list_count(ext2_u32_list bb);
641 extern errcode_t badblocks_list_create(badblocks_list *ret, int size);
642 extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk);
643 extern int badblocks_list_test(badblocks_list bb, blk_t blk);
644 extern errcode_t badblocks_list_iterate_begin(badblocks_list bb,
645 badblocks_iterate *ret);
646 extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk);
647 extern void badblocks_list_iterate_end(badblocks_iterate iter);
648 extern void badblocks_list_free(badblocks_list bb);
651 extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs,
652 ext2_badblocks_list bb_list);
655 extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap);
656 extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap);
657 extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src,
658 ext2fs_generic_bitmap *dest);
659 extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs);
660 extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs);
661 extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs);
662 extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs);
663 extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs,
665 ext2fs_block_bitmap *ret);
666 extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs,
668 ext2fs_inode_bitmap *ret);
669 extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap,
670 ext2_ino_t end, ext2_ino_t *oend);
671 extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap,
672 blk_t end, blk_t *oend);
673 extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap);
674 extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap);
675 extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs);
676 extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs);
677 extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end,
678 ext2fs_inode_bitmap bmap);
679 extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end,
680 ext2fs_block_bitmap bmap);
681 extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1,
682 ext2fs_block_bitmap bm2);
683 extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1,
684 ext2fs_inode_bitmap bm2);
685 extern errcode_t ext2fs_set_inode_bitmap_range(ext2fs_inode_bitmap bmap,
686 ext2_ino_t start, unsigned int num,
688 extern errcode_t ext2fs_get_inode_bitmap_range(ext2fs_inode_bitmap bmap,
689 ext2_ino_t start, unsigned int num,
691 extern errcode_t ext2fs_set_block_bitmap_range(ext2fs_block_bitmap bmap,
692 blk_t start, unsigned int num,
694 extern errcode_t ext2fs_get_block_bitmap_range(ext2fs_block_bitmap bmap,
695 blk_t start, unsigned int num,
700 extern errcode_t ext2fs_block_iterate(ext2_filsys fs,
704 int (*func)(ext2_filsys fs,
709 errcode_t ext2fs_block_iterate2(ext2_filsys fs,
713 int (*func)(ext2_filsys fs,
715 e2_blkcnt_t blockcnt,
722 extern errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino,
723 struct ext2_inode *inode,
724 char *block_buf, int bmap_flags,
725 blk_t block, blk_t *phys_blk);
726 extern errcode_t ext2fs_bmap2(ext2_filsys fs, ext2_ino_t ino,
727 struct ext2_inode *inode,
728 char *block_buf, int bmap_flags, blk64_t block,
729 int *ret_flags, blk64_t *phys_blk);
733 extern errcode_t ext2fs_move_blocks(ext2_filsys fs,
734 ext2fs_block_bitmap reserve,
735 ext2fs_block_bitmap alloc_map,
740 extern errcode_t ext2fs_check_desc(ext2_filsys fs);
743 extern errcode_t ext2fs_close(ext2_filsys fs);
744 extern errcode_t ext2fs_flush(ext2_filsys fs);
745 extern int ext2fs_bg_has_super(ext2_filsys fs, int group_block);
746 extern int ext2fs_super_and_bgd_loc(ext2_filsys fs,
748 blk_t *ret_super_blk,
749 blk_t *ret_old_desc_blk,
750 blk_t *ret_new_desc_blk,
752 extern void ext2fs_update_dynamic_rev(ext2_filsys fs);
755 extern void ext2fs_group_desc_csum_set(ext2_filsys fs, dgrp_t group);
756 extern int ext2fs_group_desc_csum_verify(ext2_filsys fs, dgrp_t group);
757 extern errcode_t ext2fs_set_gdt_csum(ext2_filsys fs);
761 extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs);
762 extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist);
763 extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ext2_ino_t ino,
764 blk_t blk, int blockcnt);
765 extern void ext2fs_dblist_sort(ext2_dblist dblist,
766 EXT2_QSORT_TYPE (*sortfunc)(const void *,
768 extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist,
769 int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info,
772 extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ext2_ino_t ino,
773 blk_t blk, int blockcnt);
774 extern errcode_t ext2fs_copy_dblist(ext2_dblist src,
776 extern int ext2fs_dblist_count(ext2_dblist dblist);
777 extern errcode_t ext2fs_dblist_get_last(ext2_dblist dblist,
778 struct ext2_db_entry **entry);
779 extern errcode_t ext2fs_dblist_drop_last(ext2_dblist dblist);
783 ext2fs_dblist_dir_iterate(ext2_dblist dblist,
786 int (*func)(ext2_ino_t dir,
788 struct ext2_dir_entry *dirent,
796 extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block,
798 extern errcode_t ext2fs_read_dir_block2(ext2_filsys fs, blk_t block,
799 void *buf, int flags);
800 extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block,
802 extern errcode_t ext2fs_write_dir_block2(ext2_filsys fs, blk_t block,
803 void *buf, int flags);
806 extern errcode_t ext2fs_dirhash(int version, const char *name, int len,
808 ext2_dirhash_t *ret_hash,
809 ext2_dirhash_t *ret_minor_hash);
813 extern errcode_t ext2fs_get_rec_len(ext2_filsys fs,
814 struct ext2_dir_entry *dirent,
815 unsigned int *rec_len);
816 extern errcode_t ext2fs_set_rec_len(ext2_filsys fs,
818 struct ext2_dir_entry *dirent);
819 extern errcode_t ext2fs_dir_iterate(ext2_filsys fs,
823 int (*func)(struct ext2_dir_entry *dirent,
829 extern errcode_t ext2fs_dir_iterate2(ext2_filsys fs,
833 int (*func)(ext2_ino_t dir,
835 struct ext2_dir_entry *dirent,
843 extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest);
846 extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir);
849 extern __u32 ext2fs_ext_attr_hash_entry(struct ext2_ext_attr_entry *entry,
851 extern errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf);
852 extern errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block,
854 extern errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk,
856 int adjust, __u32 *newcount);
859 extern errcode_t ext2fs_extent_header_verify(void *ptr, int size);
860 extern errcode_t ext2fs_extent_open(ext2_filsys fs, ext2_ino_t ino,
861 ext2_extent_handle_t *handle);
862 extern errcode_t ext2fs_extent_open2(ext2_filsys fs, ext2_ino_t ino,
863 struct ext2_inode *inode,
864 ext2_extent_handle_t *ret_handle);
865 extern void ext2fs_extent_free(ext2_extent_handle_t handle);
866 extern errcode_t ext2fs_extent_get(ext2_extent_handle_t handle,
867 int flags, struct ext2fs_extent *extent);
868 extern errcode_t ext2fs_extent_replace(ext2_extent_handle_t handle, int flags,
869 struct ext2fs_extent *extent);
870 extern errcode_t ext2fs_extent_insert(ext2_extent_handle_t handle, int flags,
871 struct ext2fs_extent *extent);
872 extern errcode_t ext2fs_extent_set_bmap(ext2_extent_handle_t handle,
873 blk64_t logical, blk64_t physical,
875 extern errcode_t ext2fs_extent_delete(ext2_extent_handle_t handle, int flags);
876 extern errcode_t ext2fs_extent_get_info(ext2_extent_handle_t handle,
877 struct ext2_extent_info *info);
878 extern errcode_t ext2fs_extent_goto(ext2_extent_handle_t handle,
882 extern errcode_t ext2fs_file_open2(ext2_filsys fs, ext2_ino_t ino,
883 struct ext2_inode *inode,
884 int flags, ext2_file_t *ret);
885 extern errcode_t ext2fs_file_open(ext2_filsys fs, ext2_ino_t ino,
886 int flags, ext2_file_t *ret);
887 extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file);
888 extern errcode_t ext2fs_file_close(ext2_file_t file);
889 extern errcode_t ext2fs_file_flush(ext2_file_t file);
890 extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf,
891 unsigned int wanted, unsigned int *got);
892 extern errcode_t ext2fs_file_write(ext2_file_t file, const void *buf,
893 unsigned int nbytes, unsigned int *written);
894 extern errcode_t ext2fs_file_llseek(ext2_file_t file, __u64 offset,
895 int whence, __u64 *ret_pos);
896 extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset,
897 int whence, ext2_off_t *ret_pos);
898 errcode_t ext2fs_file_get_lsize(ext2_file_t file, __u64 *ret_size);
899 extern ext2_off_t ext2fs_file_get_size(ext2_file_t file);
900 extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size);
903 extern char *ext2fs_find_block_device(dev_t device);
906 extern errcode_t ext2fs_sync_device(int fd, int flushb);
909 extern void ext2fs_free(ext2_filsys fs);
910 extern void ext2fs_free_dblist(ext2_dblist dblist);
911 extern void ext2fs_badblocks_list_free(ext2_badblocks_list bb);
912 extern void ext2fs_u32_list_free(ext2_u32_list bb);
915 extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap);
916 extern errcode_t ext2fs_make_generic_bitmap(errcode_t magic, ext2_filsys fs,
917 __u32 start, __u32 end,
919 const char *descr, char *init_map,
920 ext2fs_generic_bitmap *ret);
921 extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start,
925 ext2fs_generic_bitmap *ret);
926 extern errcode_t ext2fs_copy_generic_bitmap(ext2fs_generic_bitmap src,
927 ext2fs_generic_bitmap *dest);
928 extern void ext2fs_clear_generic_bitmap(ext2fs_generic_bitmap bitmap);
929 extern errcode_t ext2fs_fudge_generic_bitmap_end(ext2fs_inode_bitmap bitmap,
934 extern void ext2fs_set_generic_bitmap_padding(ext2fs_generic_bitmap map);
935 extern errcode_t ext2fs_resize_generic_bitmap(errcode_t magic,
938 ext2fs_generic_bitmap bmap);
939 extern errcode_t ext2fs_compare_generic_bitmap(errcode_t magic, errcode_t neq,
940 ext2fs_generic_bitmap bm1,
941 ext2fs_generic_bitmap bm2);
942 extern errcode_t ext2fs_get_generic_bitmap_range(ext2fs_generic_bitmap bmap,
944 __u32 start, __u32 num,
946 extern errcode_t ext2fs_set_generic_bitmap_range(ext2fs_generic_bitmap bmap,
948 __u32 start, __u32 num,
952 extern errcode_t ext2fs_get_device_size(const char *file, int blocksize,
954 extern errcode_t ext2fs_get_device_size2(const char *file, int blocksize,
958 errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize);
959 errcode_t ext2fs_get_device_phys_sectsize(const char *file, int *sectsize);
962 errcode_t ext2fs_iblk_add_blocks(ext2_filsys fs, struct ext2_inode *inode,
964 errcode_t ext2fs_iblk_sub_blocks(ext2_filsys fs, struct ext2_inode *inode,
966 errcode_t ext2fs_iblk_set(ext2_filsys fs, struct ext2_inode *inode, blk64_t b);
969 extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags);
970 extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags);
971 extern errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd, int flags);
972 extern errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd, int flags);
973 extern errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags);
974 extern errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags);
977 errcode_t ext2fs_read_ind_block(ext2_filsys fs, blk_t blk, void *buf);
978 errcode_t ext2fs_write_ind_block(ext2_filsys fs, blk_t blk, void *buf);
981 extern errcode_t ext2fs_initialize(const char *name, int flags,
982 struct ext2_super_block *param,
983 io_manager manager, ext2_filsys *ret_fs);
986 extern void ext2fs_free_icount(ext2_icount_t icount);
987 extern errcode_t ext2fs_create_icount_tdb(ext2_filsys fs, char *tdb_dir,
988 int flags, ext2_icount_t *ret);
989 extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags,
991 ext2_icount_t hint, ext2_icount_t *ret);
992 extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags,
995 extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ext2_ino_t ino,
997 extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ext2_ino_t ino,
999 extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ext2_ino_t ino,
1001 extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ext2_ino_t ino,
1003 extern ext2_ino_t ext2fs_get_icount_size(ext2_icount_t icount);
1004 errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *);
1007 extern errcode_t ext2fs_flush_icache(ext2_filsys fs);
1008 extern errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan,
1010 struct ext2_inode *inode,
1012 extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks,
1013 ext2_inode_scan *ret_scan);
1014 extern void ext2fs_close_inode_scan(ext2_inode_scan scan);
1015 extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino,
1016 struct ext2_inode *inode);
1017 extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan,
1019 extern void ext2fs_set_inode_callback
1020 (ext2_inode_scan scan,
1021 errcode_t (*done_group)(ext2_filsys fs,
1022 ext2_inode_scan scan,
1025 void *done_group_data);
1026 extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags,
1028 extern errcode_t ext2fs_read_inode_full(ext2_filsys fs, ext2_ino_t ino,
1029 struct ext2_inode * inode,
1031 extern errcode_t ext2fs_read_inode (ext2_filsys fs, ext2_ino_t ino,
1032 struct ext2_inode * inode);
1033 extern errcode_t ext2fs_write_inode_full(ext2_filsys fs, ext2_ino_t ino,
1034 struct ext2_inode * inode,
1036 extern errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino,
1037 struct ext2_inode * inode);
1038 extern errcode_t ext2fs_write_new_inode(ext2_filsys fs, ext2_ino_t ino,
1039 struct ext2_inode * inode);
1040 extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks);
1041 extern errcode_t ext2fs_check_directory(ext2_filsys fs, ext2_ino_t ino);
1044 extern io_manager inode_io_manager;
1045 extern errcode_t ext2fs_inode_io_intern(ext2_filsys fs, ext2_ino_t ino,
1047 extern errcode_t ext2fs_inode_io_intern2(ext2_filsys fs, ext2_ino_t ino,
1048 struct ext2_inode *inode,
1052 extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags);
1053 extern errcode_t ext2fs_check_mount_point(const char *device, int *mount_flags,
1054 char *mtpt, int mtlen);
1057 extern errcode_t ext2fs_lookup(ext2_filsys fs, ext2_ino_t dir, const char *name,
1058 int namelen, char *buf, ext2_ino_t *inode);
1059 extern errcode_t ext2fs_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
1060 const char *name, ext2_ino_t *inode);
1061 errcode_t ext2fs_namei_follow(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
1062 const char *name, ext2_ino_t *inode);
1063 extern errcode_t ext2fs_follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
1064 ext2_ino_t inode, ext2_ino_t *res_inode);
1067 int ext2fs_native_flag(void);
1070 extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino,
1071 ext2_ino_t parent_ino, char **block);
1074 extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum,
1078 extern errcode_t ext2fs_zero_blocks(ext2_filsys fs, blk_t blk, int num,
1079 blk_t *ret_blk, int *ret_count);
1080 extern errcode_t ext2fs_create_journal_superblock(ext2_filsys fs,
1081 __u32 size, int flags,
1083 extern errcode_t ext2fs_add_journal_device(ext2_filsys fs,
1084 ext2_filsys journal_dev);
1085 extern errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t size,
1087 extern int ext2fs_default_journal_size(__u64 blocks);
1090 extern errcode_t ext2fs_open(const char *name, int flags, int superblock,
1091 unsigned int block_size, io_manager manager,
1092 ext2_filsys *ret_fs);
1093 extern errcode_t ext2fs_open2(const char *name, const char *io_options,
1094 int flags, int superblock,
1095 unsigned int block_size, io_manager manager,
1096 ext2_filsys *ret_fs);
1097 extern blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block,
1099 errcode_t ext2fs_get_data_io(ext2_filsys fs, io_channel *old_io);
1100 errcode_t ext2fs_set_data_io(ext2_filsys fs, io_channel new_io);
1101 errcode_t ext2fs_rewrite_to_io(ext2_filsys fs, io_channel new_io);
1103 /* get_pathname.c */
1104 extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino,
1108 errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name,
1109 ext2_ino_t ino, int flags);
1110 errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir, const char *name,
1111 ext2_ino_t ino, int flags);
1114 extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs,
1115 ext2_badblocks_list *bb_list);
1117 /* read_bb_file.c */
1118 extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f,
1119 ext2_badblocks_list *bb_list,
1121 void (*invalid)(ext2_filsys fs,
1125 extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f,
1126 ext2_badblocks_list *bb_list,
1127 void (*invalid)(ext2_filsys fs,
1131 extern errcode_t ext2fs_create_resize_inode(ext2_filsys fs);
1134 extern void ext2fs_swap_ext_attr(char *to, char *from, int bufsize,
1136 extern void ext2fs_swap_ext_attr_header(struct ext2_ext_attr_header *to_header,
1137 struct ext2_ext_attr_header *from_hdr);
1138 extern void ext2fs_swap_ext_attr_entry(struct ext2_ext_attr_entry *to_entry,
1139 struct ext2_ext_attr_entry *from_entry);
1140 extern void ext2fs_swap_super(struct ext2_super_block * super);
1141 extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp);
1142 extern void ext2fs_swap_inode_full(ext2_filsys fs, struct ext2_inode_large *t,
1143 struct ext2_inode_large *f, int hostorder,
1145 extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t,
1146 struct ext2_inode *f, int hostorder);
1149 extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode);
1152 extern int ext2fs_parse_version_string(const char *ver_string);
1153 extern int ext2fs_get_library_version(const char **ver_string,
1154 const char **date_string);
1156 /* write_bb_file.c */
1157 extern errcode_t ext2fs_write_bb_FILE(ext2_badblocks_list bb_list,
1162 /* inline functions */
1163 extern errcode_t ext2fs_get_mem(unsigned long size, void *ptr);
1164 extern errcode_t ext2fs_get_memalign(unsigned long size,
1165 unsigned long align, void *ptr);
1166 extern errcode_t ext2fs_free_mem(void *ptr);
1167 extern errcode_t ext2fs_resize_mem(unsigned long old_size,
1168 unsigned long size, void *ptr);
1169 extern void ext2fs_mark_super_dirty(ext2_filsys fs);
1170 extern void ext2fs_mark_changed(ext2_filsys fs);
1171 extern int ext2fs_test_changed(ext2_filsys fs);
1172 extern void ext2fs_mark_valid(ext2_filsys fs);
1173 extern void ext2fs_unmark_valid(ext2_filsys fs);
1174 extern int ext2fs_test_valid(ext2_filsys fs);
1175 extern void ext2fs_mark_ib_dirty(ext2_filsys fs);
1176 extern void ext2fs_mark_bb_dirty(ext2_filsys fs);
1177 extern int ext2fs_test_ib_dirty(ext2_filsys fs);
1178 extern int ext2fs_test_bb_dirty(ext2_filsys fs);
1179 extern int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk);
1180 extern int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino);
1181 extern blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group);
1182 extern blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group);
1183 extern blk_t ext2fs_inode_data_blocks(ext2_filsys fs,
1184 struct ext2_inode *inode);
1185 extern unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b);
1188 * The actual inlined functions definitions themselves...
1190 * If NO_INLINE_FUNCS is defined, then we won't try to do inline
1193 #if (defined(INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS))
1194 #ifdef INCLUDE_INLINE_FUNCS
1195 #define _INLINE_ extern
1198 #define _INLINE_ extern __inline__
1199 #else /* For Watcom C */
1200 #define _INLINE_ extern inline
1204 #ifndef EXT2_CUSTOM_MEMORY_ROUTINES
1209 _INLINE_ errcode_t ext2fs_get_mem(unsigned long size, void *ptr)
1215 return EXT2_ET_NO_MEMORY;
1216 memcpy(ptr, &pp, sizeof (pp));
1220 _INLINE_ errcode_t ext2fs_get_memalign(unsigned long size,
1221 unsigned long align, void *ptr)
1227 if (retval = posix_memalign((void **) ptr, align, size)) {
1228 if (retval == ENOMEM)
1229 return EXT2_ET_NO_MEMORY;
1235 _INLINE_ errcode_t ext2fs_get_array(unsigned long count, unsigned long size, void *ptr)
1237 if (count && (-1UL)/count<size)
1238 return EXT2_ET_NO_MEMORY; //maybe define EXT2_ET_OVERFLOW ?
1239 return ext2fs_get_mem(count*size, ptr);
1245 _INLINE_ errcode_t ext2fs_free_mem(void *ptr)
1249 memcpy(&p, ptr, sizeof(p));
1252 memcpy(ptr, &p, sizeof(p));
1259 _INLINE_ errcode_t ext2fs_resize_mem(unsigned long EXT2FS_ATTR((unused)) old_size,
1260 unsigned long size, void *ptr)
1264 /* Use "memcpy" for pointer assignments here to avoid problems
1265 * with C99 strict type aliasing rules. */
1266 memcpy(&p, ptr, sizeof(p));
1267 p = realloc(p, size);
1269 return EXT2_ET_NO_MEMORY;
1270 memcpy(ptr, &p, sizeof(p));
1273 #endif /* Custom memory routines */
1276 * Mark a filesystem superblock as dirty
1278 _INLINE_ void ext2fs_mark_super_dirty(ext2_filsys fs)
1280 fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_CHANGED;
1284 * Mark a filesystem as changed
1286 _INLINE_ void ext2fs_mark_changed(ext2_filsys fs)
1288 fs->flags |= EXT2_FLAG_CHANGED;
1292 * Check to see if a filesystem has changed
1294 _INLINE_ int ext2fs_test_changed(ext2_filsys fs)
1296 return (fs->flags & EXT2_FLAG_CHANGED);
1300 * Mark a filesystem as valid
1302 _INLINE_ void ext2fs_mark_valid(ext2_filsys fs)
1304 fs->flags |= EXT2_FLAG_VALID;
1308 * Mark a filesystem as NOT valid
1310 _INLINE_ void ext2fs_unmark_valid(ext2_filsys fs)
1312 fs->flags &= ~EXT2_FLAG_VALID;
1316 * Check to see if a filesystem is valid
1318 _INLINE_ int ext2fs_test_valid(ext2_filsys fs)
1320 return (fs->flags & EXT2_FLAG_VALID);
1324 * Mark the inode bitmap as dirty
1326 _INLINE_ void ext2fs_mark_ib_dirty(ext2_filsys fs)
1328 fs->flags |= EXT2_FLAG_IB_DIRTY | EXT2_FLAG_CHANGED;
1332 * Mark the block bitmap as dirty
1334 _INLINE_ void ext2fs_mark_bb_dirty(ext2_filsys fs)
1336 fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_CHANGED;
1340 * Check to see if a filesystem's inode bitmap is dirty
1342 _INLINE_ int ext2fs_test_ib_dirty(ext2_filsys fs)
1344 return (fs->flags & EXT2_FLAG_IB_DIRTY);
1348 * Check to see if a filesystem's block bitmap is dirty
1350 _INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs)
1352 return (fs->flags & EXT2_FLAG_BB_DIRTY);
1356 * Return the group # of a block
1358 _INLINE_ int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk)
1360 return (blk - fs->super->s_first_data_block) /
1361 fs->super->s_blocks_per_group;
1365 * Return the group # of an inode number
1367 _INLINE_ int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino)
1369 return (ino - 1) / fs->super->s_inodes_per_group;
1373 * Return the first block (inclusive) in a group
1375 _INLINE_ blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group)
1377 return fs->super->s_first_data_block +
1378 (group * fs->super->s_blocks_per_group);
1382 * Return the last block (inclusive) in a group
1384 _INLINE_ blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group)
1386 return (group == fs->group_desc_count - 1 ?
1387 fs->super->s_blocks_count - 1 :
1388 ext2fs_group_first_block(fs, group) +
1389 (fs->super->s_blocks_per_group - 1));
1392 _INLINE_ blk_t ext2fs_inode_data_blocks(ext2_filsys fs,
1393 struct ext2_inode *inode)
1395 return inode->i_blocks -
1396 (inode->i_file_acl ? fs->blocksize >> 9 : 0);
1400 * This is an efficient, overflow safe way of calculating ceil((1.0 * a) / b)
1402 _INLINE_ unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b)
1406 return ((a - 1) / b) + 1;
1415 #endif /* _EXT2FS_EXT2FS_H */