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 * Build in support for byte-swapping filesystems if we the feature
34 * has been configured or if we're being built on a CPU architecture
35 * with a non-native byte order.
37 #if defined(ENABLE_SWAPFS) || defined(WORDS_BIGENDIAN)
38 #define EXT2FS_ENABLE_SWAPFS
42 * Where the master copy of the superblock is located, and how big
43 * superblocks are supposed to be. We define SUPERBLOCK_SIZE because
44 * the size of the superblock structure is not necessarily trustworthy
45 * (some versions have the padding set up so that the superblock is
48 #define SUPERBLOCK_OFFSET 1024
49 #define SUPERBLOCK_SIZE 1024
52 * The last ext2fs revision level that this version of the library is
55 #define EXT2_LIB_CURRENT_REV EXT2_DYNAMIC_REV
57 #ifdef HAVE_SYS_TYPES_H
58 #include <sys/types.h>
65 #if EXT2_FLAT_INCLUDES
69 #include <ext2fs/ext2_types.h>
70 #include <ext2fs/ext2_fs.h>
71 #endif /* EXT2_FLAT_INCLUDES */
73 typedef __u32 ext2_ino_t;
76 typedef __u32 ext2_off_t;
77 typedef __s64 e2_blkcnt_t;
78 typedef __u32 ext2_dirhash_t;
80 #if EXT2_FLAT_INCLUDES
85 #include <et/com_err.h>
86 #include <ext2fs/ext2_io.h>
87 #include <ext2fs/ext2_err.h>
91 * Portability help for Microsoft Visual C++
94 #define EXT2_QSORT_TYPE int __cdecl
96 #define EXT2_QSORT_TYPE int
99 typedef struct struct_ext2_filsys *ext2_filsys;
101 struct ext2fs_struct_generic_bitmap {
108 errcode_t base_error_code;
112 #define EXT2FS_MARK_ERROR 0
113 #define EXT2FS_UNMARK_ERROR 1
114 #define EXT2FS_TEST_ERROR 2
116 typedef struct ext2fs_struct_generic_bitmap *ext2fs_generic_bitmap;
117 typedef struct ext2fs_struct_generic_bitmap *ext2fs_inode_bitmap;
118 typedef struct ext2fs_struct_generic_bitmap *ext2fs_block_bitmap;
120 #ifdef EXT2_DYNAMIC_REV
121 #define EXT2_FIRST_INODE(s) EXT2_FIRST_INO(s)
123 #define EXT2_FIRST_INODE(s) EXT2_FIRST_INO
124 #define EXT2_INODE_SIZE(s) sizeof(struct ext2_inode)
128 * badblocks list definitions
131 typedef struct ext2_struct_u32_list *ext2_badblocks_list;
132 typedef struct ext2_struct_u32_iterate *ext2_badblocks_iterate;
134 typedef struct ext2_struct_u32_list *ext2_u32_list;
135 typedef struct ext2_struct_u32_iterate *ext2_u32_iterate;
138 typedef struct ext2_struct_u32_list *badblocks_list;
139 typedef struct ext2_struct_u32_iterate *badblocks_iterate;
141 #define BADBLOCKS_FLAG_DIRTY 1
144 * ext2_dblist structure and abstractions (see dblist.c)
146 struct ext2_db_entry {
152 typedef struct ext2_struct_dblist *ext2_dblist;
154 #define DBLIST_ABORT 1
157 * ext2_fileio definitions
160 #define EXT2_FILE_WRITE 0x0001
161 #define EXT2_FILE_CREATE 0x0002
163 #define EXT2_FILE_MASK 0x00FF
165 #define EXT2_FILE_BUF_DIRTY 0x4000
166 #define EXT2_FILE_BUF_VALID 0x2000
168 typedef struct ext2_file *ext2_file_t;
170 #define EXT2_SEEK_SET 0
171 #define EXT2_SEEK_CUR 1
172 #define EXT2_SEEK_END 2
175 * Flags for the ext2_filsys structure and for ext2fs_open()
177 #define EXT2_FLAG_RW 0x01
178 #define EXT2_FLAG_CHANGED 0x02
179 #define EXT2_FLAG_DIRTY 0x04
180 #define EXT2_FLAG_VALID 0x08
181 #define EXT2_FLAG_IB_DIRTY 0x10
182 #define EXT2_FLAG_BB_DIRTY 0x20
183 #define EXT2_FLAG_SWAP_BYTES 0x40
184 #define EXT2_FLAG_SWAP_BYTES_READ 0x80
185 #define EXT2_FLAG_SWAP_BYTES_WRITE 0x100
186 #define EXT2_FLAG_MASTER_SB_ONLY 0x200
187 #define EXT2_FLAG_FORCE 0x400
188 #define EXT2_FLAG_SUPER_ONLY 0x800
189 #define EXT2_FLAG_JOURNAL_DEV_OK 0x1000
190 #define EXT2_FLAG_IMAGE_FILE 0x2000
191 #define EXT2_FLAG_EXCLUSIVE 0x4000
194 * Special flag in the ext2 inode i_flag field that means that this is
195 * a new inode. (So that ext2_write_inode() can clear extra fields.)
197 #define EXT2_NEW_INODE_FL 0x80000000
200 * Flags for mkjournal
202 * EXT2_MKJOURNAL_V1_SUPER Make a (deprecated) V1 journal superblock
204 #define EXT2_MKJOURNAL_V1_SUPER 0x0000001
206 struct struct_ext2_filsys {
211 struct ext2_super_block * super;
212 unsigned int blocksize;
214 dgrp_t group_desc_count;
215 unsigned long desc_blocks;
216 struct ext2_group_desc * group_desc;
217 int inode_blocks_per_group;
218 ext2fs_inode_bitmap inode_map;
219 ext2fs_block_bitmap block_map;
220 errcode_t (*get_blocks)(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks);
221 errcode_t (*check_directory)(ext2_filsys fs, ext2_ino_t ino);
222 errcode_t (*write_bitmaps)(ext2_filsys fs);
223 errcode_t (*read_inode)(ext2_filsys fs, ext2_ino_t ino,
224 struct ext2_inode *inode);
225 errcode_t (*write_inode)(ext2_filsys fs, ext2_ino_t ino,
226 struct ext2_inode *inode);
227 ext2_badblocks_list badblocks;
229 __u32 stride; /* for mke2fs */
230 struct ext2_super_block * orig_super;
231 struct ext2_image_hdr * image_header;
235 * Reserved for future expansion
240 * Reserved for the use of the calling application.
247 struct ext2_inode_cache *icache;
251 #if EXT2_FLAT_INCLUDES
252 #include "e2_bitops.h"
254 #include <ext2fs/bitops.h>
258 * Return flags for the block iterator functions
260 #define BLOCK_CHANGED 1
261 #define BLOCK_ABORT 2
262 #define BLOCK_ERROR 4
265 * Block interate flags
267 * BLOCK_FLAG_APPEND, or BLOCK_FLAG_HOLE, indicates that the interator
268 * function should be called on blocks where the block number is zero.
269 * This is used by ext2fs_expand_dir() to be able to add a new block
270 * to an inode. It can also be used for programs that want to be able
271 * to deal with files that contain "holes".
273 * BLOCK_FLAG_DEPTH_TRAVERSE indicates that the iterator function for
274 * the indirect, doubly indirect, etc. blocks should be called after
275 * all of the blocks containined in the indirect blocks are processed.
276 * This is useful if you are going to be deallocating blocks from an
279 * BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be
280 * called for data blocks only.
282 * BLOCK_FLAG_NO_LARGE is for internal use only. It informs
283 * ext2fs_block_iterate2 that large files won't be accepted.
285 #define BLOCK_FLAG_APPEND 1
286 #define BLOCK_FLAG_HOLE 1
287 #define BLOCK_FLAG_DEPTH_TRAVERSE 2
288 #define BLOCK_FLAG_DATA_ONLY 4
290 #define BLOCK_FLAG_NO_LARGE 0x1000
293 * Magic "block count" return values for the block iterator function.
295 #define BLOCK_COUNT_IND (-1)
296 #define BLOCK_COUNT_DIND (-2)
297 #define BLOCK_COUNT_TIND (-3)
298 #define BLOCK_COUNT_TRANSLATOR (-4)
302 * Flags for ext2fs_move_blocks
304 #define EXT2_BMOVE_GET_DBLIST 0x0001
305 #define EXT2_BMOVE_DEBUG 0x0002
309 * Flags for directory block reading and writing functions
311 #define EXT2_DIRBLOCK_V2_STRUCT 0x0001
314 * Return flags for the directory iterator functions
316 #define DIRENT_CHANGED 1
317 #define DIRENT_ABORT 2
318 #define DIRENT_ERROR 3
321 * Directory iterator flags
324 #define DIRENT_FLAG_INCLUDE_EMPTY 1
325 #define DIRENT_FLAG_INCLUDE_REMOVED 2
327 #define DIRENT_DOT_FILE 1
328 #define DIRENT_DOT_DOT_FILE 2
329 #define DIRENT_OTHER_FILE 3
330 #define DIRENT_DELETED_FILE 4
333 * Inode scan definitions
335 typedef struct ext2_struct_inode_scan *ext2_inode_scan;
340 #define EXT2_SF_CHK_BADBLOCKS 0x0001
341 #define EXT2_SF_BAD_INODE_BLK 0x0002
342 #define EXT2_SF_BAD_EXTRA_BYTES 0x0004
343 #define EXT2_SF_SKIP_MISSING_ITABLE 0x0008
344 #define EXT2_SF_DO_LAZY 0x0010
347 * ext2fs_check_if_mounted flags
349 #define EXT2_MF_MOUNTED 1
350 #define EXT2_MF_ISROOT 2
351 #define EXT2_MF_READONLY 4
352 #define EXT2_MF_SWAP 8
353 #define EXT2_MF_BUSY 16
356 * Ext2/linux mode flags. We define them here so that we don't need
357 * to depend on the OS's sys/stat.h, since we may be compiling on a
360 #define LINUX_S_IFMT 00170000
361 #define LINUX_S_IFSOCK 0140000
362 #define LINUX_S_IFLNK 0120000
363 #define LINUX_S_IFREG 0100000
364 #define LINUX_S_IFBLK 0060000
365 #define LINUX_S_IFDIR 0040000
366 #define LINUX_S_IFCHR 0020000
367 #define LINUX_S_IFIFO 0010000
368 #define LINUX_S_ISUID 0004000
369 #define LINUX_S_ISGID 0002000
370 #define LINUX_S_ISVTX 0001000
372 #define LINUX_S_IRWXU 00700
373 #define LINUX_S_IRUSR 00400
374 #define LINUX_S_IWUSR 00200
375 #define LINUX_S_IXUSR 00100
377 #define LINUX_S_IRWXG 00070
378 #define LINUX_S_IRGRP 00040
379 #define LINUX_S_IWGRP 00020
380 #define LINUX_S_IXGRP 00010
382 #define LINUX_S_IRWXO 00007
383 #define LINUX_S_IROTH 00004
384 #define LINUX_S_IWOTH 00002
385 #define LINUX_S_IXOTH 00001
387 #define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK)
388 #define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG)
389 #define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR)
390 #define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR)
391 #define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK)
392 #define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO)
393 #define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK)
396 * ext2 size of an inode
398 #define EXT2_I_SIZE(i) ((i)->i_size | ((__u64) (i)->i_size_high << 32))
401 * ext2_icount_t abstraction
403 #define EXT2_ICOUNT_OPT_INCREMENT 0x01
405 typedef struct ext2_icount *ext2_icount_t;
408 * Flags for ext2fs_bmap
410 #define BMAP_ALLOC 0x0001
411 #define BMAP_SET 0x0002
414 * Flags for imager.c functions
416 #define IMAGER_FLAG_INODEMAP 1
417 #define IMAGER_FLAG_SPARSEWRITE 2
420 * For checking structure magic numbers...
423 #define EXT2_CHECK_MAGIC(struct, code) \
424 if ((struct)->magic != (code)) return (code)
428 * For ext2 compression support
430 #define EXT2FS_COMPRESSED_BLKADDR ((blk_t) 0xffffffff)
431 #define HOLE_BLKADDR(_b) ((_b) == 0 || (_b) == EXT2FS_COMPRESSED_BLKADDR)
434 * Features supported by this version of the library
436 #define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\
437 EXT2_FEATURE_COMPAT_IMAGIC_INODES|\
438 EXT3_FEATURE_COMPAT_HAS_JOURNAL|\
439 EXT2_FEATURE_COMPAT_RESIZE_INODE|\
440 EXT2_FEATURE_COMPAT_DIR_INDEX|\
441 EXT2_FEATURE_COMPAT_LAZY_BG|\
442 EXT2_FEATURE_COMPAT_EXT_ATTR)
444 /* This #ifdef is temporary until compression is fully supported */
445 #ifdef ENABLE_COMPRESSION
446 #ifndef I_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL
447 /* If the below warning bugs you, then have
448 `CPPFLAGS=-DI_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL' in your
449 environment at configure time. */
450 #warning "Compression support is experimental"
452 #define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\
453 EXT2_FEATURE_INCOMPAT_COMPRESSION|\
454 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\
455 EXT2_FEATURE_INCOMPAT_META_BG|\
456 EXT3_FEATURE_INCOMPAT_RECOVER)
458 #define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\
459 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\
460 EXT2_FEATURE_INCOMPAT_META_BG|\
461 EXT3_FEATURE_INCOMPAT_RECOVER)
463 #define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\
464 EXT2_FEATURE_RO_COMPAT_LARGE_FILE)
466 * function prototypes
470 extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode,
471 ext2fs_inode_bitmap map, ext2_ino_t *ret);
472 extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal,
473 ext2fs_block_bitmap map, blk_t *ret);
474 extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start,
475 blk_t finish, int num,
476 ext2fs_block_bitmap map,
478 extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal,
479 char *block_buf, blk_t *ret);
482 extern int ext2fs_reserve_super_and_bgd(ext2_filsys fs,
484 ext2fs_block_bitmap bmap);
487 void ext2fs_inode_alloc_stats(ext2_filsys fs, ext2_ino_t ino, int inuse);
488 void ext2fs_inode_alloc_stats2(ext2_filsys fs, ext2_ino_t ino,
489 int inuse, int isdir);
490 void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse);
493 extern errcode_t ext2fs_allocate_tables(ext2_filsys fs);
494 extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group,
495 ext2fs_block_bitmap bmap);
498 extern errcode_t ext2fs_u32_list_create(ext2_u32_list *ret, int size);
499 extern errcode_t ext2fs_u32_list_add(ext2_u32_list bb, __u32 blk);
500 extern int ext2fs_u32_list_find(ext2_u32_list bb, __u32 blk);
501 extern int ext2fs_u32_list_test(ext2_u32_list bb, blk_t blk);
502 extern errcode_t ext2fs_u32_list_iterate_begin(ext2_u32_list bb,
503 ext2_u32_iterate *ret);
504 extern int ext2fs_u32_list_iterate(ext2_u32_iterate iter, blk_t *blk);
505 extern void ext2fs_u32_list_iterate_end(ext2_u32_iterate iter);
506 extern errcode_t ext2fs_u32_copy(ext2_u32_list src, ext2_u32_list *dest);
507 extern int ext2fs_u32_list_equal(ext2_u32_list bb1, ext2_u32_list bb2);
509 extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret,
511 extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb,
513 extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb,
515 extern int ext2fs_u32_list_del(ext2_u32_list bb, __u32 blk);
516 extern void ext2fs_badblocks_list_del(ext2_u32_list bb, __u32 blk);
518 ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb,
519 ext2_badblocks_iterate *ret);
520 extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter,
522 extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter);
523 extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src,
524 ext2_badblocks_list *dest);
525 extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1,
526 ext2_badblocks_list bb2);
527 extern int ext2fs_u32_list_count(ext2_u32_list bb);
530 extern errcode_t badblocks_list_create(badblocks_list *ret, int size);
531 extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk);
532 extern int badblocks_list_test(badblocks_list bb, blk_t blk);
533 extern errcode_t badblocks_list_iterate_begin(badblocks_list bb,
534 badblocks_iterate *ret);
535 extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk);
536 extern void badblocks_list_iterate_end(badblocks_iterate iter);
537 extern void badblocks_list_free(badblocks_list bb);
540 extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs,
541 ext2_badblocks_list bb_list);
544 extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs);
545 extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs);
546 extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs);
547 extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs);
548 extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start,
552 ext2fs_generic_bitmap *ret);
553 extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs,
555 ext2fs_block_bitmap *ret);
556 extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs,
558 ext2fs_inode_bitmap *ret);
559 extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap,
560 ext2_ino_t end, ext2_ino_t *oend);
561 extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap,
562 blk_t end, blk_t *oend);
563 extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap);
564 extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap);
565 extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs);
566 extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs);
569 extern errcode_t ext2fs_block_iterate(ext2_filsys fs,
573 int (*func)(ext2_filsys fs,
578 errcode_t ext2fs_block_iterate2(ext2_filsys fs,
582 int (*func)(ext2_filsys fs,
584 e2_blkcnt_t blockcnt,
591 extern errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino,
592 struct ext2_inode *inode,
593 char *block_buf, int bmap_flags,
594 blk_t block, blk_t *phys_blk);
599 extern errcode_t ext2fs_move_blocks(ext2_filsys fs,
600 ext2fs_block_bitmap reserve,
601 ext2fs_block_bitmap alloc_map,
606 extern errcode_t ext2fs_check_desc(ext2_filsys fs);
609 extern errcode_t ext2fs_close(ext2_filsys fs);
610 extern errcode_t ext2fs_flush(ext2_filsys fs);
611 extern int ext2fs_bg_has_super(ext2_filsys fs, int group_block);
612 extern int ext2fs_super_and_bgd_loc(ext2_filsys fs,
614 blk_t *ret_super_blk,
615 blk_t *ret_old_desc_blk,
616 blk_t *ret_new_desc_blk,
618 extern void ext2fs_update_dynamic_rev(ext2_filsys fs);
621 extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1,
622 ext2fs_block_bitmap bm2);
623 extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1,
624 ext2fs_inode_bitmap bm2);
628 extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs);
629 extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist);
630 extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ext2_ino_t ino,
631 blk_t blk, int blockcnt);
632 extern void ext2fs_dblist_sort(ext2_dblist dblist,
633 EXT2_QSORT_TYPE (*sortfunc)(const void *,
635 extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist,
636 int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info,
639 extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ext2_ino_t ino,
640 blk_t blk, int blockcnt);
641 extern errcode_t ext2fs_copy_dblist(ext2_dblist src,
643 extern int ext2fs_dblist_count(ext2_dblist dblist);
647 ext2fs_dblist_dir_iterate(ext2_dblist dblist,
650 int (*func)(ext2_ino_t dir,
652 struct ext2_dir_entry *dirent,
660 extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block,
662 extern errcode_t ext2fs_read_dir_block2(ext2_filsys fs, blk_t block,
663 void *buf, int flags);
664 extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block,
666 extern errcode_t ext2fs_write_dir_block2(ext2_filsys fs, blk_t block,
667 void *buf, int flags);
670 extern errcode_t ext2fs_dirhash(int version, const char *name, int len,
672 ext2_dirhash_t *ret_hash,
673 ext2_dirhash_t *ret_minor_hash);
677 extern errcode_t ext2fs_dir_iterate(ext2_filsys fs,
681 int (*func)(struct ext2_dir_entry *dirent,
687 extern errcode_t ext2fs_dir_iterate2(ext2_filsys fs,
691 int (*func)(ext2_ino_t dir,
693 struct ext2_dir_entry *dirent,
701 extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest);
704 extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir);
707 extern errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf);
708 extern errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block,
710 extern errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk,
712 int adjust, __u32 *newcount);
715 extern errcode_t ext2fs_file_open2(ext2_filsys fs, ext2_ino_t ino,
716 struct ext2_inode *inode,
717 int flags, ext2_file_t *ret);
718 extern errcode_t ext2fs_file_open(ext2_filsys fs, ext2_ino_t ino,
719 int flags, ext2_file_t *ret);
720 extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file);
721 extern errcode_t ext2fs_file_close(ext2_file_t file);
722 extern errcode_t ext2fs_file_flush(ext2_file_t file);
723 extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf,
724 unsigned int wanted, unsigned int *got);
725 extern errcode_t ext2fs_file_write(ext2_file_t file, const void *buf,
726 unsigned int nbytes, unsigned int *written);
727 extern errcode_t ext2fs_file_llseek(ext2_file_t file, __u64 offset,
728 int whence, __u64 *ret_pos);
729 extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset,
730 int whence, ext2_off_t *ret_pos);
731 errcode_t ext2fs_file_get_lsize(ext2_file_t file, __u64 *ret_size);
732 extern ext2_off_t ext2fs_file_get_size(ext2_file_t file);
733 extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size);
736 extern char *ext2fs_find_block_device(dev_t device);
739 extern errcode_t ext2fs_sync_device(int fd, int flushb);
742 extern void ext2fs_free(ext2_filsys fs);
743 extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap);
744 extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap);
745 extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap);
746 extern void ext2fs_free_dblist(ext2_dblist dblist);
747 extern void ext2fs_badblocks_list_free(ext2_badblocks_list bb);
748 extern void ext2fs_u32_list_free(ext2_u32_list bb);
751 extern errcode_t ext2fs_get_device_size(const char *file, int blocksize,
755 errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize);
758 extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags);
759 extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags);
760 extern errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd, int flags);
761 extern errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd, int flags);
762 extern errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags);
763 extern errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags);
766 errcode_t ext2fs_read_ind_block(ext2_filsys fs, blk_t blk, void *buf);
767 errcode_t ext2fs_write_ind_block(ext2_filsys fs, blk_t blk, void *buf);
770 extern errcode_t ext2fs_initialize(const char *name, int flags,
771 struct ext2_super_block *param,
772 io_manager manager, ext2_filsys *ret_fs);
775 extern void ext2fs_free_icount(ext2_icount_t icount);
776 extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags,
778 ext2_icount_t hint, ext2_icount_t *ret);
779 extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags,
782 extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ext2_ino_t ino,
784 extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ext2_ino_t ino,
786 extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ext2_ino_t ino,
788 extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ext2_ino_t ino,
790 extern ext2_ino_t ext2fs_get_icount_size(ext2_icount_t icount);
791 errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *);
794 extern errcode_t ext2fs_flush_icache(ext2_filsys fs);
795 extern errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan,
797 struct ext2_inode *inode,
799 extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks,
800 ext2_inode_scan *ret_scan);
801 extern void ext2fs_close_inode_scan(ext2_inode_scan scan);
802 extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino,
803 struct ext2_inode *inode);
804 extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan,
806 extern void ext2fs_set_inode_callback
807 (ext2_inode_scan scan,
808 errcode_t (*done_group)(ext2_filsys fs,
809 ext2_inode_scan scan,
812 void *done_group_data);
813 extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags,
815 extern errcode_t ext2fs_read_inode_full(ext2_filsys fs, ext2_ino_t ino,
816 struct ext2_inode * inode,
818 extern errcode_t ext2fs_read_inode (ext2_filsys fs, ext2_ino_t ino,
819 struct ext2_inode * inode);
820 extern errcode_t ext2fs_write_inode_full(ext2_filsys fs, ext2_ino_t ino,
821 struct ext2_inode * inode,
823 extern errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino,
824 struct ext2_inode * inode);
825 extern errcode_t ext2fs_write_new_inode(ext2_filsys fs, ext2_ino_t ino,
826 struct ext2_inode * inode);
827 extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks);
828 extern errcode_t ext2fs_check_directory(ext2_filsys fs, ext2_ino_t ino);
831 extern io_manager inode_io_manager;
832 extern errcode_t ext2fs_inode_io_intern(ext2_filsys fs, ext2_ino_t ino,
834 extern errcode_t ext2fs_inode_io_intern2(ext2_filsys fs, ext2_ino_t ino,
835 struct ext2_inode *inode,
839 extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags);
840 extern errcode_t ext2fs_check_mount_point(const char *device, int *mount_flags,
841 char *mtpt, int mtlen);
844 extern errcode_t ext2fs_lookup(ext2_filsys fs, ext2_ino_t dir, const char *name,
845 int namelen, char *buf, ext2_ino_t *inode);
846 extern errcode_t ext2fs_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
847 const char *name, ext2_ino_t *inode);
848 errcode_t ext2fs_namei_follow(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
849 const char *name, ext2_ino_t *inode);
850 extern errcode_t ext2fs_follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
851 ext2_ino_t inode, ext2_ino_t *res_inode);
854 int ext2fs_native_flag(void);
857 extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino,
858 ext2_ino_t parent_ino, char **block);
861 extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum,
865 extern errcode_t ext2fs_create_journal_superblock(ext2_filsys fs,
866 __u32 size, int flags,
868 extern errcode_t ext2fs_add_journal_device(ext2_filsys fs,
869 ext2_filsys journal_dev);
870 extern errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t size,
874 extern errcode_t ext2fs_open(const char *name, int flags, int superblock,
875 unsigned int block_size, io_manager manager,
876 ext2_filsys *ret_fs);
877 extern errcode_t ext2fs_open2(const char *name, const char *io_options,
878 int flags, int superblock,
879 unsigned int block_size, io_manager manager,
880 ext2_filsys *ret_fs);
881 extern blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block,
883 errcode_t ext2fs_get_data_io(ext2_filsys fs, io_channel *old_io);
884 errcode_t ext2fs_set_data_io(ext2_filsys fs, io_channel new_io);
885 errcode_t ext2fs_rewrite_to_io(ext2_filsys fs, io_channel new_io);
888 extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino,
892 errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name,
893 ext2_ino_t ino, int flags);
894 errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir, const char *name,
895 ext2_ino_t ino, int flags);
898 extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs,
899 ext2_badblocks_list *bb_list);
902 extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f,
903 ext2_badblocks_list *bb_list,
905 void (*invalid)(ext2_filsys fs,
909 extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f,
910 ext2_badblocks_list *bb_list,
911 void (*invalid)(ext2_filsys fs,
915 extern errcode_t ext2fs_create_resize_inode(ext2_filsys fs);
918 extern errcode_t ext2fs_resize_generic_bitmap(__u32 new_end,
920 ext2fs_generic_bitmap bmap);
921 extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end,
922 ext2fs_inode_bitmap bmap);
923 extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end,
924 ext2fs_block_bitmap bmap);
925 extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src,
926 ext2fs_generic_bitmap *dest);
929 extern void ext2fs_swap_ext_attr(char *to, char *from, int bufsize,
931 extern void ext2fs_swap_super(struct ext2_super_block * super);
932 extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp);
933 extern void ext2fs_swap_inode_full(ext2_filsys fs, struct ext2_inode_large *t,
934 struct ext2_inode_large *f, int hostorder,
936 extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t,
937 struct ext2_inode *f, int hostorder);
940 extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode);
943 extern int ext2fs_parse_version_string(const char *ver_string);
944 extern int ext2fs_get_library_version(const char **ver_string,
945 const char **date_string);
947 /* write_bb_file.c */
948 extern errcode_t ext2fs_write_bb_FILE(ext2_badblocks_list bb_list,
953 /* inline functions */
954 extern errcode_t ext2fs_get_mem(unsigned long size, void *ptr);
955 extern errcode_t ext2fs_free_mem(void *ptr);
956 extern errcode_t ext2fs_resize_mem(unsigned long old_size,
957 unsigned long size, void *ptr);
958 extern void ext2fs_mark_super_dirty(ext2_filsys fs);
959 extern void ext2fs_mark_changed(ext2_filsys fs);
960 extern int ext2fs_test_changed(ext2_filsys fs);
961 extern void ext2fs_mark_valid(ext2_filsys fs);
962 extern void ext2fs_unmark_valid(ext2_filsys fs);
963 extern int ext2fs_test_valid(ext2_filsys fs);
964 extern void ext2fs_mark_ib_dirty(ext2_filsys fs);
965 extern void ext2fs_mark_bb_dirty(ext2_filsys fs);
966 extern int ext2fs_test_ib_dirty(ext2_filsys fs);
967 extern int ext2fs_test_bb_dirty(ext2_filsys fs);
968 extern int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk);
969 extern int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino);
970 extern blk_t ext2fs_inode_data_blocks(ext2_filsys fs,
971 struct ext2_inode *inode);
974 * The actual inlined functions definitions themselves...
976 * If NO_INLINE_FUNCS is defined, then we won't try to do inline
979 #if (defined(INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS))
980 #ifdef INCLUDE_INLINE_FUNCS
981 #define _INLINE_ extern
984 #define _INLINE_ extern __inline__
985 #else /* For Watcom C */
986 #define _INLINE_ extern inline
990 #ifndef EXT2_CUSTOM_MEMORY_ROUTINES
995 _INLINE_ errcode_t ext2fs_get_mem(unsigned long size, void *ptr)
997 void **pp = (void **)ptr;
1001 return EXT2_ET_NO_MEMORY;
1008 _INLINE_ errcode_t ext2fs_free_mem(void *ptr)
1010 void **pp = (void **)ptr;
1020 _INLINE_ errcode_t ext2fs_resize_mem(unsigned long EXT2FS_ATTR((unused)) old_size,
1021 unsigned long size, void *ptr)
1025 /* Use "memcpy" for pointer assignments here to avoid problems
1026 * with C99 strict type aliasing rules. */
1027 memcpy(&p, ptr, sizeof (p));
1028 p = realloc(p, size);
1030 return EXT2_ET_NO_MEMORY;
1031 memcpy(ptr, &p, sizeof (p));
1034 #endif /* Custom memory routines */
1037 * Mark a filesystem superblock as dirty
1039 _INLINE_ void ext2fs_mark_super_dirty(ext2_filsys fs)
1041 fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_CHANGED;
1045 * Mark a filesystem as changed
1047 _INLINE_ void ext2fs_mark_changed(ext2_filsys fs)
1049 fs->flags |= EXT2_FLAG_CHANGED;
1053 * Check to see if a filesystem has changed
1055 _INLINE_ int ext2fs_test_changed(ext2_filsys fs)
1057 return (fs->flags & EXT2_FLAG_CHANGED);
1061 * Mark a filesystem as valid
1063 _INLINE_ void ext2fs_mark_valid(ext2_filsys fs)
1065 fs->flags |= EXT2_FLAG_VALID;
1069 * Mark a filesystem as NOT valid
1071 _INLINE_ void ext2fs_unmark_valid(ext2_filsys fs)
1073 fs->flags &= ~EXT2_FLAG_VALID;
1077 * Check to see if a filesystem is valid
1079 _INLINE_ int ext2fs_test_valid(ext2_filsys fs)
1081 return (fs->flags & EXT2_FLAG_VALID);
1085 * Mark the inode bitmap as dirty
1087 _INLINE_ void ext2fs_mark_ib_dirty(ext2_filsys fs)
1089 fs->flags |= EXT2_FLAG_IB_DIRTY | EXT2_FLAG_CHANGED;
1093 * Mark the block bitmap as dirty
1095 _INLINE_ void ext2fs_mark_bb_dirty(ext2_filsys fs)
1097 fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_CHANGED;
1101 * Check to see if a filesystem's inode bitmap is dirty
1103 _INLINE_ int ext2fs_test_ib_dirty(ext2_filsys fs)
1105 return (fs->flags & EXT2_FLAG_IB_DIRTY);
1109 * Check to see if a filesystem's block bitmap is dirty
1111 _INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs)
1113 return (fs->flags & EXT2_FLAG_BB_DIRTY);
1117 * Return the group # of a block
1119 _INLINE_ int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk)
1121 return (blk - fs->super->s_first_data_block) /
1122 fs->super->s_blocks_per_group;
1126 * Return the group # of an inode number
1128 _INLINE_ int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino)
1130 return (ino - 1) / fs->super->s_inodes_per_group;
1133 _INLINE_ blk_t ext2fs_inode_data_blocks(ext2_filsys fs,
1134 struct ext2_inode *inode)
1136 return inode->i_blocks -
1137 (inode->i_file_acl ? fs->blocksize >> 9 : 0);
1146 #endif /* _EXT2FS_EXT2FS_H */