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 * Build in support for byte-swapping filesystems if we the feature
28 * has been configured or if we're being built on a CPU architecture
29 * with a non-native byte order.
31 #if defined(ENABLE_SWAPFS) || defined(WORDS_BIGENDIAN)
32 #define EXT2FS_ENABLE_SWAPFS
36 * Where the master copy of the superblock is located, and how big
37 * superblocks are supposed to be. We define SUPERBLOCK_SIZE because
38 * the size of the superblock structure is not necessarily trustworthy
39 * (some versions have the padding set up so that the superblock is
42 #define SUPERBLOCK_OFFSET 1024
43 #define SUPERBLOCK_SIZE 1024
46 * The last ext2fs revision level that this version of the library is
49 #define EXT2_LIB_CURRENT_REV EXT2_DYNAMIC_REV
51 #ifdef HAVE_SYS_TYPES_H
52 #include <sys/types.h>
57 #if EXT2_FLAT_INCLUDES
60 #include <ext2fs/ext2_types.h>
61 #endif /* EXT2_FLAT_INCLUDES */
63 typedef __u32 ext2_ino_t;
66 typedef __u32 ext2_off_t;
67 typedef __s64 e2_blkcnt_t;
69 #if EXT2_FLAT_INCLUDES
74 #include <et/com_err.h>
75 #include <ext2fs/ext2_io.h>
76 #include <ext2fs/ext2_err.h>
80 * Portability help for Microsoft Visual C++
83 #define EXT2_QSORT_TYPE int __cdecl
85 #define EXT2_QSORT_TYPE int
88 typedef struct struct_ext2_filsys *ext2_filsys;
90 struct ext2fs_struct_generic_bitmap {
97 errcode_t base_error_code;
101 #define EXT2FS_MARK_ERROR 0
102 #define EXT2FS_UNMARK_ERROR 1
103 #define EXT2FS_TEST_ERROR 2
105 typedef struct ext2fs_struct_generic_bitmap *ext2fs_generic_bitmap;
106 typedef struct ext2fs_struct_generic_bitmap *ext2fs_inode_bitmap;
107 typedef struct ext2fs_struct_generic_bitmap *ext2fs_block_bitmap;
109 #ifdef EXT2_DYNAMIC_REV
110 #define EXT2_FIRST_INODE(s) EXT2_FIRST_INO(s)
112 #define EXT2_FIRST_INODE(s) EXT2_FIRST_INO
113 #define EXT2_INODE_SIZE(s) sizeof(struct ext2_inode)
117 * badblocks list definitions
120 typedef struct ext2_struct_badblocks_list *ext2_badblocks_list;
121 typedef struct ext2_struct_badblocks_iterate *ext2_badblocks_iterate;
124 typedef struct ext2_struct_badblocks_list *badblocks_list;
125 typedef struct ext2_struct_badblocks_iterate *badblocks_iterate;
127 #define BADBLOCKS_FLAG_DIRTY 1
130 * ext2_dblist structure and abstractions (see dblist.c)
132 struct ext2_db_entry {
138 typedef struct ext2_struct_dblist *ext2_dblist;
140 #define DBLIST_ABORT 1
143 * ext2_fileio definitions
146 #define EXT2_FILE_WRITE 0x0001
147 #define EXT2_FILE_CREATE 0x0002
149 #define EXT2_FILE_MASK 0x00FF
151 #define EXT2_FILE_BUF_DIRTY 0x4000
152 #define EXT2_FILE_BUF_VALID 0x2000
154 typedef struct ext2_file *ext2_file_t;
156 #define EXT2_SEEK_SET 0
157 #define EXT2_SEEK_CUR 1
158 #define EXT2_SEEK_END 2
161 * Flags for the ext2_filsys structure and for ext2fs_open()
163 #define EXT2_FLAG_RW 0x01
164 #define EXT2_FLAG_CHANGED 0x02
165 #define EXT2_FLAG_DIRTY 0x04
166 #define EXT2_FLAG_VALID 0x08
167 #define EXT2_FLAG_IB_DIRTY 0x10
168 #define EXT2_FLAG_BB_DIRTY 0x20
169 #define EXT2_FLAG_SWAP_BYTES 0x40
170 #define EXT2_FLAG_SWAP_BYTES_READ 0x80
171 #define EXT2_FLAG_SWAP_BYTES_WRITE 0x100
172 #define EXT2_FLAG_MASTER_SB_ONLY 0x200
173 #define EXT2_FLAG_FORCE 0x400
174 #define EXT2_FLAG_SUPER_ONLY 0x800
175 #define EXT2_FLAG_JOURNAL_DEV_OK 0x1000
176 #define EXT2_FLAG_IMAGE_FILE 0x2000
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;
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 badblocks_list badblocks;
214 __u32 stride; /* for mke2fs */
215 struct ext2_super_block * orig_super;
216 struct ext2_image_hdr * image_header;
219 * Reserved for future expansion
224 * Reserved for the use of the calling application.
231 struct ext2_inode_cache *icache;
234 #if EXT2_FLAT_INCLUDES
235 #include "e2_bitops.h"
237 #include <ext2fs/bitops.h>
241 * Return flags for the block iterator functions
243 #define BLOCK_CHANGED 1
244 #define BLOCK_ABORT 2
245 #define BLOCK_ERROR 4
248 * Block interate flags
250 * BLOCK_FLAG_APPEND, or BLOCK_FLAG_HOLE, indicates that the interator
251 * function should be called on blocks where the block number is zero.
252 * This is used by ext2fs_expand_dir() to be able to add a new block
253 * to an inode. It can also be used for programs that want to be able
254 * to deal with files that contain "holes".
256 * BLOCK_FLAG_TRAVERSE indicates that the iterator function for the
257 * indirect, doubly indirect, etc. blocks should be called after all
258 * of the blocks containined in the indirect blocks are processed.
259 * This is useful if you are going to be deallocating blocks from an
262 * BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be
263 * called for data blocks only.
265 * BLOCK_FLAG_NO_LARGE is for internal use only. It informs
266 * ext2fs_block_iterate2 that large files won't be accepted.
268 #define BLOCK_FLAG_APPEND 1
269 #define BLOCK_FLAG_HOLE 1
270 #define BLOCK_FLAG_DEPTH_TRAVERSE 2
271 #define BLOCK_FLAG_DATA_ONLY 4
273 #define BLOCK_FLAG_NO_LARGE 0x1000
276 * Magic "block count" return values for the block iterator function.
278 #define BLOCK_COUNT_IND (-1)
279 #define BLOCK_COUNT_DIND (-2)
280 #define BLOCK_COUNT_TIND (-3)
281 #define BLOCK_COUNT_TRANSLATOR (-4)
285 * Flags for ext2fs_move_blocks
287 #define EXT2_BMOVE_GET_DBLIST 0x0001
288 #define EXT2_BMOVE_DEBUG 0x0002
292 * Return flags for the directory iterator functions
294 #define DIRENT_CHANGED 1
295 #define DIRENT_ABORT 2
296 #define DIRENT_ERROR 3
299 * Directory iterator flags
302 #define DIRENT_FLAG_INCLUDE_EMPTY 1
305 #define DIRENT_DOT_FILE 1
306 #define DIRENT_DOT_DOT_FILE 2
307 #define DIRENT_OTHER_FILE 3
310 * Inode scan definitions
312 typedef struct ext2_struct_inode_scan *ext2_inode_scan;
317 #define EXT2_SF_CHK_BADBLOCKS 0x0001
318 #define EXT2_SF_BAD_INODE_BLK 0x0002
319 #define EXT2_SF_BAD_EXTRA_BYTES 0x0004
320 #define EXT2_SF_SKIP_MISSING_ITABLE 0x0008
323 * ext2fs_check_if_mounted flags
325 #define EXT2_MF_MOUNTED 1
326 #define EXT2_MF_ISROOT 2
327 #define EXT2_MF_READONLY 4
328 #define EXT2_MF_SWAP 8
331 * Ext2/linux mode flags. We define them here so that we don't need
332 * to depend on the OS's sys/stat.h, since we may be compiling on a
335 #define LINUX_S_IFMT 00170000
336 #define LINUX_S_IFSOCK 0140000
337 #define LINUX_S_IFLNK 0120000
338 #define LINUX_S_IFREG 0100000
339 #define LINUX_S_IFBLK 0060000
340 #define LINUX_S_IFDIR 0040000
341 #define LINUX_S_IFCHR 0020000
342 #define LINUX_S_IFIFO 0010000
343 #define LINUX_S_ISUID 0004000
344 #define LINUX_S_ISGID 0002000
345 #define LINUX_S_ISVTX 0001000
347 #define LINUX_S_IRWXU 00700
348 #define LINUX_S_IRUSR 00400
349 #define LINUX_S_IWUSR 00200
350 #define LINUX_S_IXUSR 00100
352 #define LINUX_S_IRWXG 00070
353 #define LINUX_S_IRGRP 00040
354 #define LINUX_S_IWGRP 00020
355 #define LINUX_S_IXGRP 00010
357 #define LINUX_S_IRWXO 00007
358 #define LINUX_S_IROTH 00004
359 #define LINUX_S_IWOTH 00002
360 #define LINUX_S_IXOTH 00001
362 #define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK)
363 #define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG)
364 #define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR)
365 #define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR)
366 #define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK)
367 #define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO)
368 #define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK)
371 * ext2_icount_t abstraction
373 #define EXT2_ICOUNT_OPT_INCREMENT 0x01
375 typedef struct ext2_icount *ext2_icount_t;
378 * Flags for ext2fs_bmap
383 * Flags for imager.c functions
385 #define IMAGER_FLAG_INODEMAP 1
386 #define IMAGER_FLAG_SPARSEWRITE 2
389 * For checking structure magic numbers...
392 #define EXT2_CHECK_MAGIC(struct, code) \
393 if ((struct)->magic != (code)) return (code)
397 * For ext2 compression support
399 #define EXT2FS_COMPRESSED_BLKADDR ((blk_t) 0xffffffff)
400 #define HOLE_BLKADDR(_b) ((_b) == 0 || (_b) == EXT2FS_COMPRESSED_BLKADDR)
403 * Features supported by this version of the library
405 #define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\
406 EXT2_FEATURE_COMPAT_IMAGIC_INODES|\
407 EXT3_FEATURE_COMPAT_HAS_JOURNAL|\
408 EXT2_FEATURE_COMPAT_EXT_ATTR)
410 /* This #ifdef is temporary until compression is fully supported */
411 #ifdef ENABLE_COMPRESSION
412 #ifndef I_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL
413 /* If the below warning bugs you, then have
414 `CPPFLAGS=-DI_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL' in your
415 environment at configure time. */
416 #warning "Compression support is experimental"
418 #define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\
419 EXT2_FEATURE_INCOMPAT_COMPRESSION|\
420 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\
421 EXT3_FEATURE_INCOMPAT_RECOVER)
423 #define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\
424 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\
425 EXT3_FEATURE_INCOMPAT_RECOVER)
427 #define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\
428 EXT2_FEATURE_RO_COMPAT_LARGE_FILE)
430 * function prototypes
434 extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode,
435 ext2fs_inode_bitmap map, ext2_ino_t *ret);
436 extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal,
437 ext2fs_block_bitmap map, blk_t *ret);
438 extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start,
439 blk_t finish, int num,
440 ext2fs_block_bitmap map,
442 extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal,
443 char *block_buf, blk_t *ret);
446 extern errcode_t ext2fs_allocate_tables(ext2_filsys fs);
447 extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group,
448 ext2fs_block_bitmap bmap);
451 extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret,
453 extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb,
455 extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb,
458 ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb,
459 ext2_badblocks_iterate *ret);
460 extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter,
462 extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter);
463 extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src,
464 ext2_badblocks_list *dest);
465 extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1,
466 ext2_badblocks_list bb2);
469 extern errcode_t badblocks_list_create(badblocks_list *ret, int size);
470 extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk);
471 extern int badblocks_list_test(badblocks_list bb, blk_t blk);
472 extern errcode_t badblocks_list_iterate_begin(badblocks_list bb,
473 badblocks_iterate *ret);
474 extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk);
475 extern void badblocks_list_iterate_end(badblocks_iterate iter);
476 extern void badblocks_list_free(badblocks_list bb);
479 extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs,
480 ext2_badblocks_list bb_list);
483 extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs);
484 extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs);
485 extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs);
486 extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs);
487 extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start,
491 ext2fs_generic_bitmap *ret);
492 extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs,
494 ext2fs_block_bitmap *ret);
495 extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs,
497 ext2fs_inode_bitmap *ret);
498 extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap,
499 ext2_ino_t end, ext2_ino_t *oend);
500 extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap,
501 blk_t end, blk_t *oend);
502 extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap);
503 extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap);
504 extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs);
505 extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs);
508 extern errcode_t ext2fs_block_iterate(ext2_filsys fs,
512 int (*func)(ext2_filsys fs,
517 errcode_t ext2fs_block_iterate2(ext2_filsys fs,
521 int (*func)(ext2_filsys fs,
523 e2_blkcnt_t blockcnt,
530 extern errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino,
531 struct ext2_inode *inode,
532 char *block_buf, int bmap_flags,
533 blk_t block, blk_t *phys_blk);
538 extern errcode_t ext2fs_move_blocks(ext2_filsys fs,
539 ext2fs_block_bitmap reserve,
540 ext2fs_block_bitmap alloc_map,
545 extern errcode_t ext2fs_check_desc(ext2_filsys fs);
548 extern errcode_t ext2fs_close(ext2_filsys fs);
549 extern errcode_t ext2fs_flush(ext2_filsys fs);
550 extern int ext2fs_bg_has_super(ext2_filsys fs, int group_block);
551 extern void ext2fs_update_dynamic_rev(ext2_filsys fs);
554 extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1,
555 ext2fs_block_bitmap bm2);
556 extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1,
557 ext2fs_inode_bitmap bm2);
561 extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs);
562 extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist);
563 extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ext2_ino_t ino,
564 blk_t blk, int blockcnt);
565 extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist,
566 int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info,
569 extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ext2_ino_t ino,
570 blk_t blk, int blockcnt);
571 extern errcode_t ext2fs_copy_dblist(ext2_dblist src,
573 extern int ext2fs_dblist_count(ext2_dblist dblist);
577 ext2fs_dblist_dir_iterate(ext2_dblist dblist,
580 int (*func)(ext2_ino_t dir,
582 struct ext2_dir_entry *dirent,
590 extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block,
592 extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block,
596 extern errcode_t ext2fs_dir_iterate(ext2_filsys fs,
600 int (*func)(struct ext2_dir_entry *dirent,
608 extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest);
611 extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir);
614 void ext2fs_swap_ext_attr(ext2_filsys fs, char *to, char *from);
615 extern errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf);
616 extern errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block, void *buf);
618 extern errcode_t ext2fs_file_open(ext2_filsys fs, ext2_ino_t ino,
619 int flags, ext2_file_t *ret);
620 extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file);
621 extern errcode_t ext2fs_file_close(ext2_file_t file);
622 extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf,
623 unsigned int wanted, unsigned int *got);
624 extern errcode_t ext2fs_file_write(ext2_file_t file, void *buf,
625 unsigned int nbytes, unsigned int *written);
626 extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset,
627 int whence, ext2_off_t *ret_pos);
628 extern ext2_off_t ext2fs_file_get_size(ext2_file_t file);
629 extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size);
632 extern char *ext2fs_find_block_device(dev_t device);
635 extern errcode_t ext2fs_sync_device(int fd, int flushb);
638 extern void ext2fs_free(ext2_filsys fs);
639 extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap);
640 extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap);
641 extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap);
642 extern void ext2fs_free_dblist(ext2_dblist dblist);
643 extern void ext2fs_badblocks_list_free(badblocks_list bb);
646 extern errcode_t ext2fs_get_device_size(const char *file, int blocksize,
650 extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags);
651 extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags);
652 extern errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd, int flags);
653 extern errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd, int flags);
654 extern errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags);
655 extern errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags);
658 extern errcode_t ext2fs_initialize(const char *name, int flags,
659 struct ext2_super_block *param,
660 io_manager manager, ext2_filsys *ret_fs);
663 extern errcode_t ext2fs_flush_icache(ext2_filsys fs);
664 extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks,
665 ext2_inode_scan *ret_scan);
666 extern void ext2fs_close_inode_scan(ext2_inode_scan scan);
667 extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino,
668 struct ext2_inode *inode);
669 extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan,
671 extern void ext2fs_set_inode_callback
672 (ext2_inode_scan scan,
673 errcode_t (*done_group)(ext2_filsys fs,
674 ext2_inode_scan scan,
677 void *done_group_data);
678 extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags,
680 extern errcode_t ext2fs_read_inode (ext2_filsys fs, ext2_ino_t ino,
681 struct ext2_inode * inode);
682 extern errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino,
683 struct ext2_inode * inode);
684 extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks);
685 extern errcode_t ext2fs_check_directory(ext2_filsys fs, ext2_ino_t ino);
688 extern void ext2fs_free_icount(ext2_icount_t icount);
689 extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags, int size,
690 ext2_icount_t hint, ext2_icount_t *ret);
691 extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags, int size,
693 extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ext2_ino_t ino,
695 extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ext2_ino_t ino,
697 extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ext2_ino_t ino,
699 extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ext2_ino_t ino,
701 extern ext2_ino_t ext2fs_get_icount_size(ext2_icount_t icount);
702 errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *);
705 extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags);
706 extern errcode_t ext2fs_check_mount_point(const char *device, int *mount_flags,
707 char *mtpt, int mtlen);
710 extern errcode_t ext2fs_lookup(ext2_filsys fs, ext2_ino_t dir, const char *name,
711 int namelen, char *buf, ext2_ino_t *inode);
712 extern errcode_t ext2fs_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
713 const char *name, ext2_ino_t *inode);
714 errcode_t ext2fs_namei_follow(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
715 const char *name, ext2_ino_t *inode);
716 extern errcode_t ext2fs_follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
717 ext2_ino_t inode, ext2_ino_t *res_inode);
720 int ext2fs_native_flag(void);
723 extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino,
724 ext2_ino_t parent_ino, char **block);
727 extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum,
731 extern errcode_t ext2fs_create_journal_superblock(ext2_filsys fs,
732 __u32 size, int flags,
734 extern errcode_t ext2fs_add_journal_device(ext2_filsys fs,
735 ext2_filsys journal_dev);
736 extern errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t size,
740 extern errcode_t ext2fs_open(const char *name, int flags, int superblock,
741 int block_size, io_manager manager,
742 ext2_filsys *ret_fs);
745 extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino,
749 errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name,
750 ext2_ino_t ino, int flags);
751 errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir, const char *name,
752 ext2_ino_t ino, int flags);
755 extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs,
756 ext2_badblocks_list *bb_list);
759 extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f,
760 ext2_badblocks_list *bb_list,
762 void (*invalid)(ext2_filsys fs,
766 extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f,
767 ext2_badblocks_list *bb_list,
768 void (*invalid)(ext2_filsys fs,
772 extern errcode_t ext2fs_resize_generic_bitmap(__u32 new_end,
774 ext2fs_generic_bitmap bmap);
775 extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end,
776 ext2fs_inode_bitmap bmap);
777 extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end,
778 ext2fs_block_bitmap bmap);
779 extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src,
780 ext2fs_generic_bitmap *dest);
783 extern void ext2fs_swap_super(struct ext2_super_block * super);
784 extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp);
785 extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t,
786 struct ext2_inode *f, int hostorder);
789 extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode);
792 extern int ext2fs_parse_version_string(const char *ver_string);
793 extern int ext2fs_get_library_version(const char **ver_string,
794 const char **date_string);
796 /* write_bb_file.c */
797 extern errcode_t ext2fs_write_bb_FILE(ext2_badblocks_list bb_list,
802 /* inline functions */
803 extern errcode_t ext2fs_get_mem(unsigned long size, void **ptr);
804 extern errcode_t ext2fs_free_mem(void **ptr);
805 extern errcode_t ext2fs_resize_mem(unsigned long old_size,
806 unsigned long size, void **ptr);
807 extern void ext2fs_mark_super_dirty(ext2_filsys fs);
808 extern void ext2fs_mark_changed(ext2_filsys fs);
809 extern int ext2fs_test_changed(ext2_filsys fs);
810 extern void ext2fs_mark_valid(ext2_filsys fs);
811 extern void ext2fs_unmark_valid(ext2_filsys fs);
812 extern int ext2fs_test_valid(ext2_filsys fs);
813 extern void ext2fs_mark_ib_dirty(ext2_filsys fs);
814 extern void ext2fs_mark_bb_dirty(ext2_filsys fs);
815 extern int ext2fs_test_ib_dirty(ext2_filsys fs);
816 extern int ext2fs_test_bb_dirty(ext2_filsys fs);
817 extern int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk);
818 extern int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino);
821 * The actual inlined functions definitions themselves...
823 * If NO_INLINE_FUNCS is defined, then we won't try to do inline
826 #if (defined(INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS))
827 #ifdef INCLUDE_INLINE_FUNCS
828 #define _INLINE_ extern
831 #define _INLINE_ extern __inline__
832 #else /* For Watcom C */
833 #define _INLINE_ extern inline
837 #ifndef EXT2_CUSTOM_MEMORY_ROUTINES
841 _INLINE_ errcode_t ext2fs_get_mem(unsigned long size, void **ptr)
845 return EXT2_ET_NO_MEMORY;
852 _INLINE_ errcode_t ext2fs_free_mem(void **ptr)
862 _INLINE_ errcode_t ext2fs_resize_mem(unsigned long old_size,
863 unsigned long size, void **ptr)
867 p = realloc(*ptr, size);
869 return EXT2_ET_NO_MEMORY;
873 #endif /* Custom memory routines */
876 * Mark a filesystem superblock as dirty
878 _INLINE_ void ext2fs_mark_super_dirty(ext2_filsys fs)
880 fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_CHANGED;
884 * Mark a filesystem as changed
886 _INLINE_ void ext2fs_mark_changed(ext2_filsys fs)
888 fs->flags |= EXT2_FLAG_CHANGED;
892 * Check to see if a filesystem has changed
894 _INLINE_ int ext2fs_test_changed(ext2_filsys fs)
896 return (fs->flags & EXT2_FLAG_CHANGED);
900 * Mark a filesystem as valid
902 _INLINE_ void ext2fs_mark_valid(ext2_filsys fs)
904 fs->flags |= EXT2_FLAG_VALID;
908 * Mark a filesystem as NOT valid
910 _INLINE_ void ext2fs_unmark_valid(ext2_filsys fs)
912 fs->flags &= ~EXT2_FLAG_VALID;
916 * Check to see if a filesystem is valid
918 _INLINE_ int ext2fs_test_valid(ext2_filsys fs)
920 return (fs->flags & EXT2_FLAG_VALID);
924 * Mark the inode bitmap as dirty
926 _INLINE_ void ext2fs_mark_ib_dirty(ext2_filsys fs)
928 fs->flags |= EXT2_FLAG_IB_DIRTY | EXT2_FLAG_CHANGED;
932 * Mark the block bitmap as dirty
934 _INLINE_ void ext2fs_mark_bb_dirty(ext2_filsys fs)
936 fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_CHANGED;
940 * Check to see if a filesystem's inode bitmap is dirty
942 _INLINE_ int ext2fs_test_ib_dirty(ext2_filsys fs)
944 return (fs->flags & EXT2_FLAG_IB_DIRTY);
948 * Check to see if a filesystem's block bitmap is dirty
950 _INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs)
952 return (fs->flags & EXT2_FLAG_BB_DIRTY);
956 * Return the group # of a block
958 _INLINE_ int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk)
960 return (blk - fs->super->s_first_data_block) /
961 fs->super->s_blocks_per_group;
965 * Return the group # of an inode number
967 _INLINE_ int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino)
969 return (ino - 1) / fs->super->s_inodes_per_group;
978 #endif /* _EXT2FS_EXT2FS_H */