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 0
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 */
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
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
177 * Special flag in the ext2 inode i_flag field that means that this is
178 * a new inode. (So that ext2_write_inode() can clear extra fields.)
180 #define EXT2_NEW_INODE_FL 0x80000000
182 struct struct_ext2_filsys {
187 struct ext2_super_block * super;
190 dgrp_t group_desc_count;
191 unsigned long desc_blocks;
192 struct ext2_group_desc * group_desc;
193 int inode_blocks_per_group;
194 ext2fs_inode_bitmap inode_map;
195 ext2fs_block_bitmap block_map;
196 errcode_t (*get_blocks)(ext2_filsys fs, ino_t ino, blk_t *blocks);
197 errcode_t (*check_directory)(ext2_filsys fs, ino_t ino);
198 errcode_t (*write_bitmaps)(ext2_filsys fs);
199 errcode_t (*read_inode)(ext2_filsys fs, ino_t ino,
200 struct ext2_inode *inode);
201 errcode_t (*write_inode)(ext2_filsys fs, ino_t ino,
202 struct ext2_inode *inode);
203 badblocks_list badblocks;
205 __u32 stride; /* for mke2fs */
207 * Reserved for future expansion
212 * Reserved for the use of the calling application.
219 struct ext2_inode_cache *icache;
222 #if EXT2_FLAT_INCLUDES
223 #include "e2_bitops.h"
225 #include "ext2fs/bitops.h"
229 * Return flags for the block iterator functions
231 #define BLOCK_CHANGED 1
232 #define BLOCK_ABORT 2
233 #define BLOCK_ERROR 4
236 * Block interate flags
238 * BLOCK_FLAG_APPEND, or BLOCK_FLAG_HOLE, indicates that the interator
239 * function should be called on blocks where the block number is zero.
240 * This is used by ext2fs_expand_dir() to be able to add a new block
241 * to an inode. It can also be used for programs that want to be able
242 * to deal with files that contain "holes".
244 * BLOCK_FLAG_TRAVERSE indicates that the iterator function for the
245 * indirect, doubly indirect, etc. blocks should be called after all
246 * of the blocks containined in the indirect blocks are processed.
247 * This is useful if you are going to be deallocating blocks from an
250 * BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be
251 * called for data blocks only.
253 * BLOCK_FLAG_NO_LARGE is for internal use only. It informs
254 * ext2fs_block_iterate2 that large files won't be accepted.
256 #define BLOCK_FLAG_APPEND 1
257 #define BLOCK_FLAG_HOLE 1
258 #define BLOCK_FLAG_DEPTH_TRAVERSE 2
259 #define BLOCK_FLAG_DATA_ONLY 4
261 #define BLOCK_FLAG_NO_LARGE 0x1000
264 * Magic "block count" return values for the block iterator function.
266 #define BLOCK_COUNT_IND (-1)
267 #define BLOCK_COUNT_DIND (-2)
268 #define BLOCK_COUNT_TIND (-3)
269 #define BLOCK_COUNT_TRANSLATOR (-4)
273 * Flags for ext2fs_move_blocks
275 #define EXT2_BMOVE_GET_DBLIST 0x0001
276 #define EXT2_BMOVE_DEBUG 0x0002
280 * Return flags for the directory iterator functions
282 #define DIRENT_CHANGED 1
283 #define DIRENT_ABORT 2
284 #define DIRENT_ERROR 3
287 * Directory iterator flags
290 #define DIRENT_FLAG_INCLUDE_EMPTY 1
293 #define DIRENT_DOT_FILE 1
294 #define DIRENT_DOT_DOT_FILE 2
295 #define DIRENT_OTHER_FILE 3
298 * Inode scan definitions
300 typedef struct ext2_struct_inode_scan *ext2_inode_scan;
305 #define EXT2_SF_CHK_BADBLOCKS 0x0001
306 #define EXT2_SF_BAD_INODE_BLK 0x0002
307 #define EXT2_SF_BAD_EXTRA_BYTES 0x0004
308 #define EXT2_SF_SKIP_MISSING_ITABLE 0x0008
311 * ext2fs_check_if_mounted flags
313 #define EXT2_MF_MOUNTED 1
314 #define EXT2_MF_ISROOT 2
315 #define EXT2_MF_READONLY 4
318 * Ext2/linux mode flags. We define them here so that we don't need
319 * to depend on the OS's sys/stat.h, since we may be compiling on a
322 #define LINUX_S_IFMT 00170000
323 #define LINUX_S_IFSOCK 0140000
324 #define LINUX_S_IFLNK 0120000
325 #define LINUX_S_IFREG 0100000
326 #define LINUX_S_IFBLK 0060000
327 #define LINUX_S_IFDIR 0040000
328 #define LINUX_S_IFCHR 0020000
329 #define LINUX_S_IFIFO 0010000
330 #define LINUX_S_ISUID 0004000
331 #define LINUX_S_ISGID 0002000
332 #define LINUX_S_ISVTX 0001000
334 #define LINUX_S_IRWXU 00700
335 #define LINUX_S_IRUSR 00400
336 #define LINUX_S_IWUSR 00200
337 #define LINUX_S_IXUSR 00100
339 #define LINUX_S_IRWXG 00070
340 #define LINUX_S_IRGRP 00040
341 #define LINUX_S_IWGRP 00020
342 #define LINUX_S_IXGRP 00010
344 #define LINUX_S_IRWXO 00007
345 #define LINUX_S_IROTH 00004
346 #define LINUX_S_IWOTH 00002
347 #define LINUX_S_IXOTH 00001
349 #define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK)
350 #define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG)
351 #define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR)
352 #define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR)
353 #define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK)
354 #define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO)
355 #define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK)
358 * ext2_icount_t abstraction
360 #define EXT2_ICOUNT_OPT_INCREMENT 0x01
362 typedef struct ext2_icount *ext2_icount_t;
365 * Flags for ext2fs_bmap
370 * For checking structure magic numbers...
373 #define EXT2_CHECK_MAGIC(struct, code) \
374 if ((struct)->magic != (code)) return (code)
378 * The ext2fs library private definition of the ext2 superblock, so we
379 * don't have to depend on the kernel's definition of the superblock,
380 * which might not have the latest features.
383 __u32 s_inodes_count; /* Inodes count */
384 __u32 s_blocks_count; /* Blocks count */
385 __u32 s_r_blocks_count; /* Reserved blocks count */
386 __u32 s_free_blocks_count; /* Free blocks count */
387 __u32 s_free_inodes_count; /* Free inodes count */
388 __u32 s_first_data_block; /* First Data Block */
389 __u32 s_log_block_size; /* Block size */
390 __s32 s_log_frag_size; /* Fragment size */
391 __u32 s_blocks_per_group; /* # Blocks per group */
392 __u32 s_frags_per_group; /* # Fragments per group */
393 __u32 s_inodes_per_group; /* # Inodes per group */
394 __u32 s_mtime; /* Mount time */
395 __u32 s_wtime; /* Write time */
396 __u16 s_mnt_count; /* Mount count */
397 __s16 s_max_mnt_count; /* Maximal mount count */
398 __u16 s_magic; /* Magic signature */
399 __u16 s_state; /* File system state */
400 __u16 s_errors; /* Behaviour when detecting errors */
401 __u16 s_minor_rev_level; /* minor revision level */
402 __u32 s_lastcheck; /* time of last check */
403 __u32 s_checkinterval; /* max. time between checks */
404 __u32 s_creator_os; /* OS */
405 __u32 s_rev_level; /* Revision level */
406 __u16 s_def_resuid; /* Default uid for reserved blocks */
407 __u16 s_def_resgid; /* Default gid for reserved blocks */
409 * These fields are for EXT2_DYNAMIC_REV superblocks only.
411 * Note: the difference between the compatible feature set and
412 * the incompatible feature set is that if there is a bit set
413 * in the incompatible feature set that the kernel doesn't
414 * know about, it should refuse to mount the filesystem.
416 * e2fsck's requirements are more strict; if it doesn't know
417 * about a feature in either the compatible or incompatible
418 * feature set, it must abort and not try to meddle with
419 * things it doesn't understand...
421 __u32 s_first_ino; /* First non-reserved inode */
422 __u16 s_inode_size; /* size of inode structure */
423 __u16 s_block_group_nr; /* block group # of this superblock */
424 __u32 s_feature_compat; /* compatible feature set */
425 __u32 s_feature_incompat; /* incompatible feature set */
426 __u32 s_feature_ro_compat; /* readonly-compatible feature set */
427 __u8 s_uuid[16]; /* 128-bit uuid for volume */
428 char s_volume_name[16]; /* volume name */
429 char s_last_mounted[64]; /* directory where last mounted */
430 __u32 s_algorithm_usage_bitmap; /* For compression */
432 * Performance hints. Directory preallocation should only
433 * happen if the EXT2_FEATURE_COMPAT_DIR_PREALLOC flag is on.
435 __u8 s_prealloc_blocks; /* Nr of blocks to try to preallocate*/
436 __u8 s_prealloc_dir_blocks; /* Nr to preallocate for dirs */
439 * Journaling support.
441 __u8 s_journal_uuid[16]; /* uuid of journal superblock */
442 __u32 s_journal_inum; /* inode number of journal file */
443 __u32 s_journal_dev; /* device number of journal file */
444 __u32 s_last_orphan; /* start of list of inodes to delete */
446 __u32 s_reserved[197]; /* Padding to the end of the block */
449 #define EXT2FS_COMPRESSED_BLKADDR ((blk_t) 0xffffffff)
450 #define HOLE_BLKADDR(_b) ((_b) == 0 || (_b) == EXT2FS_COMPRESSED_BLKADDR)
453 * Feature set definitions (that might not be in ext2_fs.h
456 #ifndef EXT2_FEATURE_COMPAT_DIR_PREALLOC
457 #define EXT2_FEATURE_COMPAT_DIR_PREALLOC 0x0001
460 #ifndef EXT2_FEATURE_COMPAT_IMAGIC_INODES /* for AFS, etc. */
461 #define EXT2_FEATURE_COMPAT_IMAGIC_INODES 0x0002
462 #define EXT2_IMAGIC_FL 0x00002000
465 #ifndef EXT3_FEATURE_COMPAT_HAS_JOURNAL
466 #define EXT3_FEATURE_COMPAT_HAS_JOURNAL 0x0004
469 #ifndef EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER
470 #define EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER 0x0001
473 #ifndef EXT2_FEATURE_RO_COMPAT_LARGE_FILE
474 #define EXT2_FEATURE_RO_COMPAT_LARGE_FILE 0x0002
475 #define i_size_high i_dir_acl
478 #ifndef EXT2_FEATURE_RO_COMPAT_BTREE_DIR
479 #define EXT2_FEATURE_RO_COMPAT_BTREE_DIR 0x0004
482 #ifndef EXT2_FEATURE_INCOMPAT_COMPRESSION
483 #define EXT2_FEATURE_INCOMPAT_COMPRESSION 0x0001
486 #ifndef EXT2_FEATURE_INCOMPAT_FILETYPE
487 #define EXT2_FEATURE_INCOMPAT_FILETYPE 0x0002
490 #ifndef EXT3_FEATURE_INCOMPAT_RECOVER
491 #define EXT3_FEATURE_INCOMPAT_RECOVER 0x0004 /* Needs recovery */
494 #define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\
495 EXT2_FEATURE_COMPAT_IMAGIC_INODES|\
496 EXT3_FEATURE_COMPAT_HAS_JOURNAL)
497 /* This #ifdef is temporary until compression is fully supported */
498 #ifdef ENABLE_COMPRESSION
499 #ifndef I_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL
500 /* If the below warning bugs you, then have
501 `CPPFLAGS=-DI_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL' in your
502 environment at configure time. */
503 #warning "Compression support is experimental"
505 #define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\
506 EXT2_FEATURE_INCOMPAT_COMPRESSION)
508 #define EXT2_LIB_FEATURE_INCOMPAT_SUPP EXT2_FEATURE_INCOMPAT_FILETYPE
510 #define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\
511 EXT2_FEATURE_RO_COMPAT_LARGE_FILE)
513 * function prototypes
517 extern errcode_t ext2fs_new_inode(ext2_filsys fs, ino_t dir, int mode,
518 ext2fs_inode_bitmap map, ino_t *ret);
519 extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal,
520 ext2fs_block_bitmap map, blk_t *ret);
521 extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start,
522 blk_t finish, int num,
523 ext2fs_block_bitmap map,
525 extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal,
526 char *block_buf, blk_t *ret);
529 extern errcode_t ext2fs_allocate_tables(ext2_filsys fs);
530 extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group,
531 ext2fs_block_bitmap bmap);
534 extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret,
536 extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb,
538 extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb,
541 ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb,
542 ext2_badblocks_iterate *ret);
543 extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter,
545 extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter);
546 extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src,
547 ext2_badblocks_list *dest);
548 extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1,
549 ext2_badblocks_list bb2);
552 extern errcode_t badblocks_list_create(badblocks_list *ret, int size);
553 extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk);
554 extern int badblocks_list_test(badblocks_list bb, blk_t blk);
555 extern errcode_t badblocks_list_iterate_begin(badblocks_list bb,
556 badblocks_iterate *ret);
557 extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk);
558 extern void badblocks_list_iterate_end(badblocks_iterate iter);
559 extern void badblocks_list_free(badblocks_list bb);
562 extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs,
563 ext2_badblocks_list bb_list);
566 extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs);
567 extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs);
568 extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs);
569 extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs);
570 extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start,
574 ext2fs_generic_bitmap *ret);
575 extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs,
577 ext2fs_block_bitmap *ret);
578 extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs,
580 ext2fs_inode_bitmap *ret);
581 extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap,
582 ino_t end, ino_t *oend);
583 extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap,
584 blk_t end, blk_t *oend);
585 extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap);
586 extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap);
587 extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs);
588 extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs);
591 extern errcode_t ext2fs_block_iterate(ext2_filsys fs,
595 int (*func)(ext2_filsys fs,
600 errcode_t ext2fs_block_iterate2(ext2_filsys fs,
604 int (*func)(ext2_filsys fs,
606 e2_blkcnt_t blockcnt,
613 extern errcode_t ext2fs_bmap(ext2_filsys fs, ino_t ino,
614 struct ext2_inode *inode,
615 char *block_buf, int bmap_flags,
616 blk_t block, blk_t *phys_blk);
621 extern errcode_t ext2fs_move_blocks(ext2_filsys fs,
622 ext2fs_block_bitmap reserve,
623 ext2fs_block_bitmap alloc_map,
628 extern errcode_t ext2fs_check_desc(ext2_filsys fs);
631 extern errcode_t ext2fs_close(ext2_filsys fs);
632 extern errcode_t ext2fs_flush(ext2_filsys fs);
633 extern int ext2fs_bg_has_super(ext2_filsys fs, int group_block);
636 extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1,
637 ext2fs_block_bitmap bm2);
638 extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1,
639 ext2fs_inode_bitmap bm2);
643 extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ino_t *ret_num_dirs);
644 extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist);
645 extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ino_t ino,
646 blk_t blk, int blockcnt);
647 extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist,
648 int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info,
651 extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ino_t ino,
652 blk_t blk, int blockcnt);
653 extern errcode_t ext2fs_copy_dblist(ext2_dblist src,
655 extern int ext2fs_dblist_count(ext2_dblist dblist);
659 ext2fs_dblist_dir_iterate(ext2_dblist dblist,
662 int (*func)(ino_t dir,
664 struct ext2_dir_entry *dirent,
672 extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block,
674 extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block,
678 extern errcode_t ext2fs_dir_iterate(ext2_filsys fs,
682 int (*func)(struct ext2_dir_entry *dirent,
690 extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest);
693 extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ino_t dir);
696 extern errcode_t ext2fs_file_open(ext2_filsys fs, ino_t ino,
697 int flags, ext2_file_t *ret);
698 extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file);
699 extern errcode_t ext2fs_file_close(ext2_file_t file);
700 extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf,
701 unsigned int wanted, unsigned int *got);
702 extern errcode_t ext2fs_file_write(ext2_file_t file, void *buf,
703 unsigned int nbytes, unsigned int *written);
704 extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset,
705 int whence, ext2_off_t *ret_pos);
706 extern ext2_off_t ext2fs_file_get_size(ext2_file_t file);
707 extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size);
710 extern void ext2fs_free(ext2_filsys fs);
711 extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap);
712 extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap);
713 extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap);
714 extern void ext2fs_free_dblist(ext2_dblist dblist);
715 extern void ext2fs_badblocks_list_free(badblocks_list bb);
718 extern errcode_t ext2fs_get_device_size(const char *file, int blocksize,
722 extern errcode_t ext2fs_initialize(const char *name, int flags,
723 struct ext2_super_block *param,
724 io_manager manager, ext2_filsys *ret_fs);
727 extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks,
728 ext2_inode_scan *ret_scan);
729 extern void ext2fs_close_inode_scan(ext2_inode_scan scan);
730 extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ino_t *ino,
731 struct ext2_inode *inode);
732 extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan,
734 extern void ext2fs_set_inode_callback
735 (ext2_inode_scan scan,
736 errcode_t (*done_group)(ext2_filsys fs,
737 ext2_inode_scan scan,
740 void *done_group_data);
741 extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags,
743 extern errcode_t ext2fs_read_inode (ext2_filsys fs, ino_t ino,
744 struct ext2_inode * inode);
745 extern errcode_t ext2fs_write_inode(ext2_filsys fs, ino_t ino,
746 struct ext2_inode * inode);
747 extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ino_t ino, blk_t *blocks);
748 extern errcode_t ext2fs_check_directory(ext2_filsys fs, ino_t ino);
751 extern void ext2fs_free_icount(ext2_icount_t icount);
752 extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags, int size,
753 ext2_icount_t hint, ext2_icount_t *ret);
754 extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags, int size,
756 extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ino_t ino,
758 extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ino_t ino,
760 extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ino_t ino,
762 extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ino_t ino,
764 extern ino_t ext2fs_get_icount_size(ext2_icount_t icount);
765 errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *);
768 extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags);
771 extern errcode_t ext2fs_lookup(ext2_filsys fs, ino_t dir, const char *name,
772 int namelen, char *buf, ino_t *inode);
773 extern errcode_t ext2fs_namei(ext2_filsys fs, ino_t root, ino_t cwd,
774 const char *name, ino_t *inode);
775 errcode_t ext2fs_namei_follow(ext2_filsys fs, ino_t root, ino_t cwd,
776 const char *name, ino_t *inode);
777 extern errcode_t ext2fs_follow_link(ext2_filsys fs, ino_t root, ino_t cwd,
778 ino_t inode, ino_t *res_inode);
781 int ext2fs_native_flag(void);
784 extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ino_t dir_ino,
785 ino_t parent_ino, char **block);
788 extern errcode_t ext2fs_mkdir(ext2_filsys fs, ino_t parent, ino_t inum,
792 extern errcode_t ext2fs_open(const char *name, int flags, int superblock,
793 int block_size, io_manager manager,
794 ext2_filsys *ret_fs);
797 extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ino_t dir, ino_t ino,
801 errcode_t ext2fs_link(ext2_filsys fs, ino_t dir, const char *name,
802 ino_t ino, int flags);
803 errcode_t ext2fs_unlink(ext2_filsys fs, ino_t dir, const char *name,
804 ino_t ino, int flags);
807 extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs,
808 ext2_badblocks_list *bb_list);
811 extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f,
812 ext2_badblocks_list *bb_list,
814 void (*invalid)(ext2_filsys fs,
818 extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f,
819 ext2_badblocks_list *bb_list,
820 void (*invalid)(ext2_filsys fs,
824 extern errcode_t ext2fs_resize_generic_bitmap(__u32 new_end,
826 ext2fs_generic_bitmap bmap);
827 extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end,
828 ext2fs_inode_bitmap bmap);
829 extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end,
830 ext2fs_block_bitmap bmap);
831 extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src,
832 ext2fs_generic_bitmap *dest);
835 extern void ext2fs_swap_super(struct ext2_super_block * super);
836 extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp);
837 extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t,
838 struct ext2_inode *f, int hostorder);
841 extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode);
844 extern int ext2fs_parse_version_string(const char *ver_string);
845 extern int ext2fs_get_library_version(const char **ver_string,
846 const char **date_string);
848 /* inline functions */
849 extern errcode_t ext2fs_get_mem(unsigned long size, void **ptr);
850 extern errcode_t ext2fs_free_mem(void **ptr);
851 extern errcode_t ext2fs_resize_mem(unsigned long old_size,
852 unsigned long size, void **ptr);
853 extern void ext2fs_mark_super_dirty(ext2_filsys fs);
854 extern void ext2fs_mark_changed(ext2_filsys fs);
855 extern int ext2fs_test_changed(ext2_filsys fs);
856 extern void ext2fs_mark_valid(ext2_filsys fs);
857 extern void ext2fs_unmark_valid(ext2_filsys fs);
858 extern int ext2fs_test_valid(ext2_filsys fs);
859 extern void ext2fs_mark_ib_dirty(ext2_filsys fs);
860 extern void ext2fs_mark_bb_dirty(ext2_filsys fs);
861 extern int ext2fs_test_ib_dirty(ext2_filsys fs);
862 extern int ext2fs_test_bb_dirty(ext2_filsys fs);
863 extern int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk);
864 extern int ext2fs_group_of_ino(ext2_filsys fs, ino_t ino);
867 * The actual inlined functions definitions themselves...
869 * If NO_INLINE_FUNCS is defined, then we won't try to do inline
872 #if (defined(INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS))
873 #ifdef INCLUDE_INLINE_FUNCS
874 #define _INLINE_ extern
877 #define _INLINE_ extern __inline__
878 #else /* For Watcom C */
879 #define _INLINE_ extern inline
883 #ifndef EXT2_CUSTOM_MEMORY_ROUTINES
887 _INLINE_ errcode_t ext2fs_get_mem(unsigned long size, void **ptr)
891 return EXT2_ET_NO_MEMORY;
898 _INLINE_ errcode_t ext2fs_free_mem(void **ptr)
908 _INLINE_ errcode_t ext2fs_resize_mem(unsigned long old_size,
909 unsigned long size, void **ptr)
913 p = realloc(*ptr, size);
915 return EXT2_ET_NO_MEMORY;
919 #endif /* Custom memory routines */
922 * Mark a filesystem superblock as dirty
924 _INLINE_ void ext2fs_mark_super_dirty(ext2_filsys fs)
926 fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_CHANGED;
930 * Mark a filesystem as changed
932 _INLINE_ void ext2fs_mark_changed(ext2_filsys fs)
934 fs->flags |= EXT2_FLAG_CHANGED;
938 * Check to see if a filesystem has changed
940 _INLINE_ int ext2fs_test_changed(ext2_filsys fs)
942 return (fs->flags & EXT2_FLAG_CHANGED);
946 * Mark a filesystem as valid
948 _INLINE_ void ext2fs_mark_valid(ext2_filsys fs)
950 fs->flags |= EXT2_FLAG_VALID;
954 * Mark a filesystem as NOT valid
956 _INLINE_ void ext2fs_unmark_valid(ext2_filsys fs)
958 fs->flags &= ~EXT2_FLAG_VALID;
962 * Check to see if a filesystem is valid
964 _INLINE_ int ext2fs_test_valid(ext2_filsys fs)
966 return (fs->flags & EXT2_FLAG_VALID);
970 * Mark the inode bitmap as dirty
972 _INLINE_ void ext2fs_mark_ib_dirty(ext2_filsys fs)
974 fs->flags |= EXT2_FLAG_IB_DIRTY | EXT2_FLAG_CHANGED;
978 * Mark the block bitmap as dirty
980 _INLINE_ void ext2fs_mark_bb_dirty(ext2_filsys fs)
982 fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_CHANGED;
986 * Check to see if a filesystem's inode bitmap is dirty
988 _INLINE_ int ext2fs_test_ib_dirty(ext2_filsys fs)
990 return (fs->flags & EXT2_FLAG_IB_DIRTY);
994 * Check to see if a filesystem's block bitmap is dirty
996 _INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs)
998 return (fs->flags & EXT2_FLAG_BB_DIRTY);
1002 * Return the group # of a block
1004 _INLINE_ int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk)
1006 return (blk - fs->super->s_first_data_block) /
1007 fs->super->s_blocks_per_group;
1011 * Return the group # of an inode number
1013 _INLINE_ int ext2fs_group_of_ino(ext2_filsys fs, ino_t ino)
1015 return (ino - 1) / fs->super->s_inodes_per_group;
1024 #endif /* _EXT2FS_EXT2FS_H */