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
20 * Non-GNU C compilers won't necessarily understand inline
22 #if (!defined(__GNUC__) && !defined(__WATCOMC__))
23 #define NO_INLINE_FUNCS
27 * Where the master copy of the superblock is located, and how big
28 * superblocks are supposed to be. We define SUPERBLOCK_SIZE because
29 * the size of the superblock structure is not necessarily trustworthy
30 * (some versions have the padding set up so that the superblock is
33 #define SUPERBLOCK_OFFSET 1024
34 #define SUPERBLOCK_SIZE 1024
37 * The last ext2fs revision level that this version of the library is
40 #define EXT2_LIB_CURRENT_REV EXT2_DYNAMIC_REV
42 #ifdef HAVE_SYS_TYPES_H
43 #include <sys/types.h>
48 #if EXT2_FLAT_INCLUDES
51 #include <asm/types.h>
52 #if !defined(__GNUC__) || defined(__STRICT_ANSI__) /* asm/types.h already defines __s64 and __u64 otherwise */
54 typedef __signed__ long __s64;
55 typedef unsigned long __u64;
56 #elif SIZEOF_LONG_LONG == 8 || \
57 defined(__GNUC__) && (((~0UL) == 0xffffffff) || defined(__i386__))
58 typedef __signed__ long long __s64;
59 typedef unsigned long long __u64;
60 #endif /* SIZEOF_LONG == 8 */
62 #endif /* EXT2_FLAT_INCLUDES */
64 typedef __u32 ext2_ino_t;
67 typedef __u32 ext2_off_t;
68 typedef __s64 e2_blkcnt_t;
70 #if EXT2_FLAT_INCLUDES
75 #include "et/com_err.h"
76 #include "ext2fs/ext2_io.h"
77 #include "ext2fs/ext2_err.h"
81 * Portability help for Microsoft Visual C++
84 #define EXT2_QSORT_TYPE int __cdecl
86 #define EXT2_QSORT_TYPE int
89 typedef struct struct_ext2_filsys *ext2_filsys;
91 struct ext2fs_struct_generic_bitmap {
98 errcode_t base_error_code;
102 #define EXT2FS_MARK_ERROR 0
103 #define EXT2FS_UNMARK_ERROR 1
104 #define EXT2FS_TEST_ERROR 2
106 typedef struct ext2fs_struct_generic_bitmap *ext2fs_generic_bitmap;
107 typedef struct ext2fs_struct_generic_bitmap *ext2fs_inode_bitmap;
108 typedef struct ext2fs_struct_generic_bitmap *ext2fs_block_bitmap;
110 #ifdef EXT2_DYNAMIC_REV
111 #define EXT2_FIRST_INODE(s) EXT2_FIRST_INO(s)
113 #define EXT2_FIRST_INODE(s) EXT2_FIRST_INO
114 #define EXT2_INODE_SIZE(s) sizeof(struct ext2_inode)
118 * badblocks list definitions
121 typedef struct ext2_struct_badblocks_list *ext2_badblocks_list;
122 typedef struct ext2_struct_badblocks_iterate *ext2_badblocks_iterate;
125 typedef struct ext2_struct_badblocks_list *badblocks_list;
126 typedef struct ext2_struct_badblocks_iterate *badblocks_iterate;
128 #define BADBLOCKS_FLAG_DIRTY 1
131 * ext2_dblist structure and abstractions (see dblist.c)
133 struct ext2_db_entry {
139 typedef struct ext2_struct_dblist *ext2_dblist;
141 #define DBLIST_ABORT 1
144 * ext2_fileio definitions
147 #define EXT2_FILE_WRITE 0x0001
148 #define EXT2_FILE_CREATE 0x0002
150 #define EXT2_FILE_MASK 0x00FF
152 #define EXT2_FILE_BUF_DIRTY 0x4000
153 #define EXT2_FILE_BUF_VALID 0x2000
155 typedef struct ext2_file *ext2_file_t;
157 #define EXT2_SEEK_SET 0
158 #define EXT2_SEEK_CUR 1
159 #define EXT2_SEEK_END 2
162 * Flags for the ext2_filsys structure
164 #define EXT2_FLAG_RW 0x01
165 #define EXT2_FLAG_CHANGED 0x02
166 #define EXT2_FLAG_DIRTY 0x04
167 #define EXT2_FLAG_VALID 0x08
168 #define EXT2_FLAG_IB_DIRTY 0x10
169 #define EXT2_FLAG_BB_DIRTY 0x20
170 #define EXT2_FLAG_SWAP_BYTES 0x40
171 #define EXT2_FLAG_SWAP_BYTES_READ 0x80
172 #define EXT2_FLAG_SWAP_BYTES_WRITE 0x100
173 #define EXT2_FLAG_MASTER_SB_ONLY 0x200
174 #define EXT2_FLAG_FORCE 0x400
175 #define EXT2_FLAG_SUPER_ONLY 0x800
178 * Special flag in the ext2 inode i_flag field that means that this is
179 * a new inode. (So that ext2_write_inode() can clear extra fields.)
181 #define EXT2_NEW_INODE_FL 0x80000000
184 * Flags for mkjournal
186 * EXT2_MKJOURNAL_V1_SUPER Make a (deprecated) V1 journal superblock
188 #define EXT2_MKJOURNAL_V1_SUPER 0x0000001
190 struct struct_ext2_filsys {
195 struct ext2_super_block * super;
198 dgrp_t group_desc_count;
199 unsigned long desc_blocks;
200 struct ext2_group_desc * group_desc;
201 int inode_blocks_per_group;
202 ext2fs_inode_bitmap inode_map;
203 ext2fs_block_bitmap block_map;
204 errcode_t (*get_blocks)(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks);
205 errcode_t (*check_directory)(ext2_filsys fs, ext2_ino_t ino);
206 errcode_t (*write_bitmaps)(ext2_filsys fs);
207 errcode_t (*read_inode)(ext2_filsys fs, ext2_ino_t ino,
208 struct ext2_inode *inode);
209 errcode_t (*write_inode)(ext2_filsys fs, ext2_ino_t ino,
210 struct ext2_inode *inode);
211 badblocks_list badblocks;
213 __u32 stride; /* for mke2fs */
214 struct ext2_super_block * orig_super;
216 * Reserved for future expansion
221 * Reserved for the use of the calling application.
228 struct ext2_inode_cache *icache;
231 #if EXT2_FLAT_INCLUDES
232 #include "e2_bitops.h"
234 #include "ext2fs/bitops.h"
238 * Return flags for the block iterator functions
240 #define BLOCK_CHANGED 1
241 #define BLOCK_ABORT 2
242 #define BLOCK_ERROR 4
245 * Block interate flags
247 * BLOCK_FLAG_APPEND, or BLOCK_FLAG_HOLE, indicates that the interator
248 * function should be called on blocks where the block number is zero.
249 * This is used by ext2fs_expand_dir() to be able to add a new block
250 * to an inode. It can also be used for programs that want to be able
251 * to deal with files that contain "holes".
253 * BLOCK_FLAG_TRAVERSE indicates that the iterator function for the
254 * indirect, doubly indirect, etc. blocks should be called after all
255 * of the blocks containined in the indirect blocks are processed.
256 * This is useful if you are going to be deallocating blocks from an
259 * BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be
260 * called for data blocks only.
262 * BLOCK_FLAG_NO_LARGE is for internal use only. It informs
263 * ext2fs_block_iterate2 that large files won't be accepted.
265 #define BLOCK_FLAG_APPEND 1
266 #define BLOCK_FLAG_HOLE 1
267 #define BLOCK_FLAG_DEPTH_TRAVERSE 2
268 #define BLOCK_FLAG_DATA_ONLY 4
270 #define BLOCK_FLAG_NO_LARGE 0x1000
273 * Magic "block count" return values for the block iterator function.
275 #define BLOCK_COUNT_IND (-1)
276 #define BLOCK_COUNT_DIND (-2)
277 #define BLOCK_COUNT_TIND (-3)
278 #define BLOCK_COUNT_TRANSLATOR (-4)
282 * Flags for ext2fs_move_blocks
284 #define EXT2_BMOVE_GET_DBLIST 0x0001
285 #define EXT2_BMOVE_DEBUG 0x0002
289 * Return flags for the directory iterator functions
291 #define DIRENT_CHANGED 1
292 #define DIRENT_ABORT 2
293 #define DIRENT_ERROR 3
296 * Directory iterator flags
299 #define DIRENT_FLAG_INCLUDE_EMPTY 1
302 #define DIRENT_DOT_FILE 1
303 #define DIRENT_DOT_DOT_FILE 2
304 #define DIRENT_OTHER_FILE 3
307 * Inode scan definitions
309 typedef struct ext2_struct_inode_scan *ext2_inode_scan;
314 #define EXT2_SF_CHK_BADBLOCKS 0x0001
315 #define EXT2_SF_BAD_INODE_BLK 0x0002
316 #define EXT2_SF_BAD_EXTRA_BYTES 0x0004
317 #define EXT2_SF_SKIP_MISSING_ITABLE 0x0008
320 * ext2fs_check_if_mounted flags
322 #define EXT2_MF_MOUNTED 1
323 #define EXT2_MF_ISROOT 2
324 #define EXT2_MF_READONLY 4
327 * Ext2/linux mode flags. We define them here so that we don't need
328 * to depend on the OS's sys/stat.h, since we may be compiling on a
331 #define LINUX_S_IFMT 00170000
332 #define LINUX_S_IFSOCK 0140000
333 #define LINUX_S_IFLNK 0120000
334 #define LINUX_S_IFREG 0100000
335 #define LINUX_S_IFBLK 0060000
336 #define LINUX_S_IFDIR 0040000
337 #define LINUX_S_IFCHR 0020000
338 #define LINUX_S_IFIFO 0010000
339 #define LINUX_S_ISUID 0004000
340 #define LINUX_S_ISGID 0002000
341 #define LINUX_S_ISVTX 0001000
343 #define LINUX_S_IRWXU 00700
344 #define LINUX_S_IRUSR 00400
345 #define LINUX_S_IWUSR 00200
346 #define LINUX_S_IXUSR 00100
348 #define LINUX_S_IRWXG 00070
349 #define LINUX_S_IRGRP 00040
350 #define LINUX_S_IWGRP 00020
351 #define LINUX_S_IXGRP 00010
353 #define LINUX_S_IRWXO 00007
354 #define LINUX_S_IROTH 00004
355 #define LINUX_S_IWOTH 00002
356 #define LINUX_S_IXOTH 00001
358 #define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK)
359 #define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG)
360 #define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR)
361 #define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR)
362 #define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK)
363 #define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO)
364 #define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK)
367 * ext2_icount_t abstraction
369 #define EXT2_ICOUNT_OPT_INCREMENT 0x01
371 typedef struct ext2_icount *ext2_icount_t;
374 * Flags for ext2fs_bmap
379 * Flags for imager.c functions
381 #define IMAGER_FLAG_INODEMAP 1
382 #define IMAGER_FLAG_SPARSEWRITE 2
385 * For checking structure magic numbers...
388 #define EXT2_CHECK_MAGIC(struct, code) \
389 if ((struct)->magic != (code)) return (code)
393 * For ext2 compression support
395 #define EXT2FS_COMPRESSED_BLKADDR ((blk_t) 0xffffffff)
396 #define HOLE_BLKADDR(_b) ((_b) == 0 || (_b) == EXT2FS_COMPRESSED_BLKADDR)
399 * Features supported by this version of the library
401 #define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\
402 EXT2_FEATURE_COMPAT_IMAGIC_INODES|\
403 EXT3_FEATURE_COMPAT_HAS_JOURNAL)
405 /* This #ifdef is temporary until compression is fully supported */
406 #ifdef ENABLE_COMPRESSION
407 #ifndef I_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL
408 /* If the below warning bugs you, then have
409 `CPPFLAGS=-DI_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL' in your
410 environment at configure time. */
411 #warning "Compression support is experimental"
413 #define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\
414 EXT2_FEATURE_INCOMPAT_COMPRESSION|\
415 EXT3_FEATURE_INCOMPAT_RECOVER)
417 #define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\
418 EXT3_FEATURE_INCOMPAT_RECOVER)
420 #define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\
421 EXT2_FEATURE_RO_COMPAT_LARGE_FILE)
423 * function prototypes
427 extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode,
428 ext2fs_inode_bitmap map, ext2_ino_t *ret);
429 extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal,
430 ext2fs_block_bitmap map, blk_t *ret);
431 extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start,
432 blk_t finish, int num,
433 ext2fs_block_bitmap map,
435 extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal,
436 char *block_buf, blk_t *ret);
439 extern errcode_t ext2fs_allocate_tables(ext2_filsys fs);
440 extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group,
441 ext2fs_block_bitmap bmap);
444 extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret,
446 extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb,
448 extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb,
451 ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb,
452 ext2_badblocks_iterate *ret);
453 extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter,
455 extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter);
456 extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src,
457 ext2_badblocks_list *dest);
458 extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1,
459 ext2_badblocks_list bb2);
462 extern errcode_t badblocks_list_create(badblocks_list *ret, int size);
463 extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk);
464 extern int badblocks_list_test(badblocks_list bb, blk_t blk);
465 extern errcode_t badblocks_list_iterate_begin(badblocks_list bb,
466 badblocks_iterate *ret);
467 extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk);
468 extern void badblocks_list_iterate_end(badblocks_iterate iter);
469 extern void badblocks_list_free(badblocks_list bb);
472 extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs,
473 ext2_badblocks_list bb_list);
476 extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs);
477 extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs);
478 extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs);
479 extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs);
480 extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start,
484 ext2fs_generic_bitmap *ret);
485 extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs,
487 ext2fs_block_bitmap *ret);
488 extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs,
490 ext2fs_inode_bitmap *ret);
491 extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap,
492 ext2_ino_t end, ext2_ino_t *oend);
493 extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap,
494 blk_t end, blk_t *oend);
495 extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap);
496 extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap);
497 extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs);
498 extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs);
501 extern errcode_t ext2fs_block_iterate(ext2_filsys fs,
505 int (*func)(ext2_filsys fs,
510 errcode_t ext2fs_block_iterate2(ext2_filsys fs,
514 int (*func)(ext2_filsys fs,
516 e2_blkcnt_t blockcnt,
523 extern errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino,
524 struct ext2_inode *inode,
525 char *block_buf, int bmap_flags,
526 blk_t block, blk_t *phys_blk);
531 extern errcode_t ext2fs_move_blocks(ext2_filsys fs,
532 ext2fs_block_bitmap reserve,
533 ext2fs_block_bitmap alloc_map,
538 extern errcode_t ext2fs_check_desc(ext2_filsys fs);
541 extern errcode_t ext2fs_close(ext2_filsys fs);
542 extern errcode_t ext2fs_flush(ext2_filsys fs);
543 extern int ext2fs_bg_has_super(ext2_filsys fs, int group_block);
544 extern void ext2fs_update_dynamic_rev(ext2_filsys fs);
547 extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1,
548 ext2fs_block_bitmap bm2);
549 extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1,
550 ext2fs_inode_bitmap bm2);
554 extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs);
555 extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist);
556 extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ext2_ino_t ino,
557 blk_t blk, int blockcnt);
558 extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist,
559 int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info,
562 extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ext2_ino_t ino,
563 blk_t blk, int blockcnt);
564 extern errcode_t ext2fs_copy_dblist(ext2_dblist src,
566 extern int ext2fs_dblist_count(ext2_dblist dblist);
570 ext2fs_dblist_dir_iterate(ext2_dblist dblist,
573 int (*func)(ext2_ino_t dir,
575 struct ext2_dir_entry *dirent,
583 extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block,
585 extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block,
589 extern errcode_t ext2fs_dir_iterate(ext2_filsys fs,
593 int (*func)(struct ext2_dir_entry *dirent,
601 extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest);
604 extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir);
607 extern errcode_t ext2fs_file_open(ext2_filsys fs, ext2_ino_t ino,
608 int flags, ext2_file_t *ret);
609 extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file);
610 extern errcode_t ext2fs_file_close(ext2_file_t file);
611 extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf,
612 unsigned int wanted, unsigned int *got);
613 extern errcode_t ext2fs_file_write(ext2_file_t file, void *buf,
614 unsigned int nbytes, unsigned int *written);
615 extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset,
616 int whence, ext2_off_t *ret_pos);
617 extern ext2_off_t ext2fs_file_get_size(ext2_file_t file);
618 extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size);
621 extern char *ext2fs_find_block_device(dev_t device);
624 extern errcode_t ext2fs_sync_device(int fd, int flushb);
627 extern void ext2fs_free(ext2_filsys fs);
628 extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap);
629 extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap);
630 extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap);
631 extern void ext2fs_free_dblist(ext2_dblist dblist);
632 extern void ext2fs_badblocks_list_free(badblocks_list bb);
635 extern errcode_t ext2fs_get_device_size(const char *file, int blocksize,
639 extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags);
640 extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags);
641 extern errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd, int flags);
642 extern errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd, int flags);
643 extern errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags);
644 extern errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags);
647 extern errcode_t ext2fs_initialize(const char *name, int flags,
648 struct ext2_super_block *param,
649 io_manager manager, ext2_filsys *ret_fs);
652 extern errcode_t ext2fs_flush_icache(ext2_filsys fs);
653 extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks,
654 ext2_inode_scan *ret_scan);
655 extern void ext2fs_close_inode_scan(ext2_inode_scan scan);
656 extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino,
657 struct ext2_inode *inode);
658 extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan,
660 extern void ext2fs_set_inode_callback
661 (ext2_inode_scan scan,
662 errcode_t (*done_group)(ext2_filsys fs,
663 ext2_inode_scan scan,
666 void *done_group_data);
667 extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags,
669 extern errcode_t ext2fs_read_inode (ext2_filsys fs, ext2_ino_t ino,
670 struct ext2_inode * inode);
671 extern errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino,
672 struct ext2_inode * inode);
673 extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks);
674 extern errcode_t ext2fs_check_directory(ext2_filsys fs, ext2_ino_t ino);
677 extern void ext2fs_free_icount(ext2_icount_t icount);
678 extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags, int size,
679 ext2_icount_t hint, ext2_icount_t *ret);
680 extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags, int size,
682 extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ext2_ino_t ino,
684 extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ext2_ino_t ino,
686 extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ext2_ino_t ino,
688 extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ext2_ino_t ino,
690 extern ext2_ino_t ext2fs_get_icount_size(ext2_icount_t icount);
691 errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *);
694 extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags);
695 extern errcode_t ext2fs_check_mount_point(const char *device, int *mount_flags,
696 char *mtpt, int mtlen);
699 extern errcode_t ext2fs_lookup(ext2_filsys fs, ext2_ino_t dir, const char *name,
700 int namelen, char *buf, ext2_ino_t *inode);
701 extern errcode_t ext2fs_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
702 const char *name, ext2_ino_t *inode);
703 errcode_t ext2fs_namei_follow(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
704 const char *name, ext2_ino_t *inode);
705 extern errcode_t ext2fs_follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
706 ext2_ino_t inode, ext2_ino_t *res_inode);
709 int ext2fs_native_flag(void);
712 extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino,
713 ext2_ino_t parent_ino, char **block);
716 extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum,
720 extern errcode_t ext2fs_add_journal_device(ext2_filsys fs, char *device,
721 blk_t size, int flags);
722 extern errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t size,
726 extern errcode_t ext2fs_open(const char *name, int flags, int superblock,
727 int block_size, io_manager manager,
728 ext2_filsys *ret_fs);
731 extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino,
735 errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name,
736 ext2_ino_t ino, int flags);
737 errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir, const char *name,
738 ext2_ino_t ino, int flags);
741 extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs,
742 ext2_badblocks_list *bb_list);
745 extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f,
746 ext2_badblocks_list *bb_list,
748 void (*invalid)(ext2_filsys fs,
752 extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f,
753 ext2_badblocks_list *bb_list,
754 void (*invalid)(ext2_filsys fs,
758 extern errcode_t ext2fs_resize_generic_bitmap(__u32 new_end,
760 ext2fs_generic_bitmap bmap);
761 extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end,
762 ext2fs_inode_bitmap bmap);
763 extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end,
764 ext2fs_block_bitmap bmap);
765 extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src,
766 ext2fs_generic_bitmap *dest);
769 extern void ext2fs_swap_super(struct ext2_super_block * super);
770 extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp);
771 extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t,
772 struct ext2_inode *f, int hostorder);
775 extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode);
778 extern int ext2fs_parse_version_string(const char *ver_string);
779 extern int ext2fs_get_library_version(const char **ver_string,
780 const char **date_string);
782 /* write_bb_file.c */
783 extern errcode_t ext2fs_write_bb_FILE(ext2_badblocks_list bb_list,
788 /* inline functions */
789 extern errcode_t ext2fs_get_mem(unsigned long size, void **ptr);
790 extern errcode_t ext2fs_free_mem(void **ptr);
791 extern errcode_t ext2fs_resize_mem(unsigned long old_size,
792 unsigned long size, void **ptr);
793 extern void ext2fs_mark_super_dirty(ext2_filsys fs);
794 extern void ext2fs_mark_changed(ext2_filsys fs);
795 extern int ext2fs_test_changed(ext2_filsys fs);
796 extern void ext2fs_mark_valid(ext2_filsys fs);
797 extern void ext2fs_unmark_valid(ext2_filsys fs);
798 extern int ext2fs_test_valid(ext2_filsys fs);
799 extern void ext2fs_mark_ib_dirty(ext2_filsys fs);
800 extern void ext2fs_mark_bb_dirty(ext2_filsys fs);
801 extern int ext2fs_test_ib_dirty(ext2_filsys fs);
802 extern int ext2fs_test_bb_dirty(ext2_filsys fs);
803 extern int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk);
804 extern int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino);
807 * The actual inlined functions definitions themselves...
809 * If NO_INLINE_FUNCS is defined, then we won't try to do inline
812 #if (defined(INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS))
813 #ifdef INCLUDE_INLINE_FUNCS
814 #define _INLINE_ extern
817 #define _INLINE_ extern __inline__
818 #else /* For Watcom C */
819 #define _INLINE_ extern inline
823 #ifndef EXT2_CUSTOM_MEMORY_ROUTINES
827 _INLINE_ errcode_t ext2fs_get_mem(unsigned long size, void **ptr)
831 return EXT2_ET_NO_MEMORY;
838 _INLINE_ errcode_t ext2fs_free_mem(void **ptr)
848 _INLINE_ errcode_t ext2fs_resize_mem(unsigned long old_size,
849 unsigned long size, void **ptr)
853 p = realloc(*ptr, size);
855 return EXT2_ET_NO_MEMORY;
859 #endif /* Custom memory routines */
862 * Mark a filesystem superblock as dirty
864 _INLINE_ void ext2fs_mark_super_dirty(ext2_filsys fs)
866 fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_CHANGED;
870 * Mark a filesystem as changed
872 _INLINE_ void ext2fs_mark_changed(ext2_filsys fs)
874 fs->flags |= EXT2_FLAG_CHANGED;
878 * Check to see if a filesystem has changed
880 _INLINE_ int ext2fs_test_changed(ext2_filsys fs)
882 return (fs->flags & EXT2_FLAG_CHANGED);
886 * Mark a filesystem as valid
888 _INLINE_ void ext2fs_mark_valid(ext2_filsys fs)
890 fs->flags |= EXT2_FLAG_VALID;
894 * Mark a filesystem as NOT valid
896 _INLINE_ void ext2fs_unmark_valid(ext2_filsys fs)
898 fs->flags &= ~EXT2_FLAG_VALID;
902 * Check to see if a filesystem is valid
904 _INLINE_ int ext2fs_test_valid(ext2_filsys fs)
906 return (fs->flags & EXT2_FLAG_VALID);
910 * Mark the inode bitmap as dirty
912 _INLINE_ void ext2fs_mark_ib_dirty(ext2_filsys fs)
914 fs->flags |= EXT2_FLAG_IB_DIRTY | EXT2_FLAG_CHANGED;
918 * Mark the block bitmap as dirty
920 _INLINE_ void ext2fs_mark_bb_dirty(ext2_filsys fs)
922 fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_CHANGED;
926 * Check to see if a filesystem's inode bitmap is dirty
928 _INLINE_ int ext2fs_test_ib_dirty(ext2_filsys fs)
930 return (fs->flags & EXT2_FLAG_IB_DIRTY);
934 * Check to see if a filesystem's block bitmap is dirty
936 _INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs)
938 return (fs->flags & EXT2_FLAG_BB_DIRTY);
942 * Return the group # of a block
944 _INLINE_ int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk)
946 return (blk - fs->super->s_first_data_block) /
947 fs->super->s_blocks_per_group;
951 * Return the group # of an inode number
953 _INLINE_ int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino)
955 return (ino - 1) / fs->super->s_inodes_per_group;
964 #endif /* _EXT2FS_EXT2FS_H */