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 */
206 struct ext2_super_block * orig_super;
208 * Reserved for future expansion
213 * Reserved for the use of the calling application.
220 struct ext2_inode_cache *icache;
223 #if EXT2_FLAT_INCLUDES
224 #include "e2_bitops.h"
226 #include "ext2fs/bitops.h"
230 * Return flags for the block iterator functions
232 #define BLOCK_CHANGED 1
233 #define BLOCK_ABORT 2
234 #define BLOCK_ERROR 4
237 * Block interate flags
239 * BLOCK_FLAG_APPEND, or BLOCK_FLAG_HOLE, indicates that the interator
240 * function should be called on blocks where the block number is zero.
241 * This is used by ext2fs_expand_dir() to be able to add a new block
242 * to an inode. It can also be used for programs that want to be able
243 * to deal with files that contain "holes".
245 * BLOCK_FLAG_TRAVERSE indicates that the iterator function for the
246 * indirect, doubly indirect, etc. blocks should be called after all
247 * of the blocks containined in the indirect blocks are processed.
248 * This is useful if you are going to be deallocating blocks from an
251 * BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be
252 * called for data blocks only.
254 * BLOCK_FLAG_NO_LARGE is for internal use only. It informs
255 * ext2fs_block_iterate2 that large files won't be accepted.
257 #define BLOCK_FLAG_APPEND 1
258 #define BLOCK_FLAG_HOLE 1
259 #define BLOCK_FLAG_DEPTH_TRAVERSE 2
260 #define BLOCK_FLAG_DATA_ONLY 4
262 #define BLOCK_FLAG_NO_LARGE 0x1000
265 * Magic "block count" return values for the block iterator function.
267 #define BLOCK_COUNT_IND (-1)
268 #define BLOCK_COUNT_DIND (-2)
269 #define BLOCK_COUNT_TIND (-3)
270 #define BLOCK_COUNT_TRANSLATOR (-4)
274 * Flags for ext2fs_move_blocks
276 #define EXT2_BMOVE_GET_DBLIST 0x0001
277 #define EXT2_BMOVE_DEBUG 0x0002
281 * Return flags for the directory iterator functions
283 #define DIRENT_CHANGED 1
284 #define DIRENT_ABORT 2
285 #define DIRENT_ERROR 3
288 * Directory iterator flags
291 #define DIRENT_FLAG_INCLUDE_EMPTY 1
294 #define DIRENT_DOT_FILE 1
295 #define DIRENT_DOT_DOT_FILE 2
296 #define DIRENT_OTHER_FILE 3
299 * Inode scan definitions
301 typedef struct ext2_struct_inode_scan *ext2_inode_scan;
306 #define EXT2_SF_CHK_BADBLOCKS 0x0001
307 #define EXT2_SF_BAD_INODE_BLK 0x0002
308 #define EXT2_SF_BAD_EXTRA_BYTES 0x0004
309 #define EXT2_SF_SKIP_MISSING_ITABLE 0x0008
312 * ext2fs_check_if_mounted flags
314 #define EXT2_MF_MOUNTED 1
315 #define EXT2_MF_ISROOT 2
316 #define EXT2_MF_READONLY 4
319 * Ext2/linux mode flags. We define them here so that we don't need
320 * to depend on the OS's sys/stat.h, since we may be compiling on a
323 #define LINUX_S_IFMT 00170000
324 #define LINUX_S_IFSOCK 0140000
325 #define LINUX_S_IFLNK 0120000
326 #define LINUX_S_IFREG 0100000
327 #define LINUX_S_IFBLK 0060000
328 #define LINUX_S_IFDIR 0040000
329 #define LINUX_S_IFCHR 0020000
330 #define LINUX_S_IFIFO 0010000
331 #define LINUX_S_ISUID 0004000
332 #define LINUX_S_ISGID 0002000
333 #define LINUX_S_ISVTX 0001000
335 #define LINUX_S_IRWXU 00700
336 #define LINUX_S_IRUSR 00400
337 #define LINUX_S_IWUSR 00200
338 #define LINUX_S_IXUSR 00100
340 #define LINUX_S_IRWXG 00070
341 #define LINUX_S_IRGRP 00040
342 #define LINUX_S_IWGRP 00020
343 #define LINUX_S_IXGRP 00010
345 #define LINUX_S_IRWXO 00007
346 #define LINUX_S_IROTH 00004
347 #define LINUX_S_IWOTH 00002
348 #define LINUX_S_IXOTH 00001
350 #define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK)
351 #define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG)
352 #define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR)
353 #define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR)
354 #define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK)
355 #define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO)
356 #define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK)
359 * ext2_icount_t abstraction
361 #define EXT2_ICOUNT_OPT_INCREMENT 0x01
363 typedef struct ext2_icount *ext2_icount_t;
366 * Flags for ext2fs_bmap
371 * For checking structure magic numbers...
374 #define EXT2_CHECK_MAGIC(struct, code) \
375 if ((struct)->magic != (code)) return (code)
379 * The ext2fs library private definition of the ext2 superblock, so we
380 * don't have to depend on the kernel's definition of the superblock,
381 * which might not have the latest features.
384 __u32 s_inodes_count; /* Inodes count */
385 __u32 s_blocks_count; /* Blocks count */
386 __u32 s_r_blocks_count; /* Reserved blocks count */
387 __u32 s_free_blocks_count; /* Free blocks count */
388 __u32 s_free_inodes_count; /* Free inodes count */
389 __u32 s_first_data_block; /* First Data Block */
390 __u32 s_log_block_size; /* Block size */
391 __s32 s_log_frag_size; /* Fragment size */
392 __u32 s_blocks_per_group; /* # Blocks per group */
393 __u32 s_frags_per_group; /* # Fragments per group */
394 __u32 s_inodes_per_group; /* # Inodes per group */
395 __u32 s_mtime; /* Mount time */
396 __u32 s_wtime; /* Write time */
397 __u16 s_mnt_count; /* Mount count */
398 __s16 s_max_mnt_count; /* Maximal mount count */
399 __u16 s_magic; /* Magic signature */
400 __u16 s_state; /* File system state */
401 __u16 s_errors; /* Behaviour when detecting errors */
402 __u16 s_minor_rev_level; /* minor revision level */
403 __u32 s_lastcheck; /* time of last check */
404 __u32 s_checkinterval; /* max. time between checks */
405 __u32 s_creator_os; /* OS */
406 __u32 s_rev_level; /* Revision level */
407 __u16 s_def_resuid; /* Default uid for reserved blocks */
408 __u16 s_def_resgid; /* Default gid for reserved blocks */
410 * These fields are for EXT2_DYNAMIC_REV superblocks only.
412 * Note: the difference between the compatible feature set and
413 * the incompatible feature set is that if there is a bit set
414 * in the incompatible feature set that the kernel doesn't
415 * know about, it should refuse to mount the filesystem.
417 * e2fsck's requirements are more strict; if it doesn't know
418 * about a feature in either the compatible or incompatible
419 * feature set, it must abort and not try to meddle with
420 * things it doesn't understand...
422 __u32 s_first_ino; /* First non-reserved inode */
423 __u16 s_inode_size; /* size of inode structure */
424 __u16 s_block_group_nr; /* block group # of this superblock */
425 __u32 s_feature_compat; /* compatible feature set */
426 __u32 s_feature_incompat; /* incompatible feature set */
427 __u32 s_feature_ro_compat; /* readonly-compatible feature set */
428 __u8 s_uuid[16]; /* 128-bit uuid for volume */
429 char s_volume_name[16]; /* volume name */
430 char s_last_mounted[64]; /* directory where last mounted */
431 __u32 s_algorithm_usage_bitmap; /* For compression */
433 * Performance hints. Directory preallocation should only
434 * happen if the EXT2_FEATURE_COMPAT_DIR_PREALLOC flag is on.
436 __u8 s_prealloc_blocks; /* Nr of blocks to try to preallocate*/
437 __u8 s_prealloc_dir_blocks; /* Nr to preallocate for dirs */
440 * Journaling support.
442 __u8 s_journal_uuid[16]; /* uuid of journal superblock */
443 __u32 s_journal_inum; /* inode number of journal file */
444 __u32 s_journal_dev; /* device number of journal file */
445 __u32 s_last_orphan; /* start of list of inodes to delete */
447 __u32 s_reserved[197]; /* Padding to the end of the block */
450 #define EXT2FS_COMPRESSED_BLKADDR ((blk_t) 0xffffffff)
451 #define HOLE_BLKADDR(_b) ((_b) == 0 || (_b) == EXT2FS_COMPRESSED_BLKADDR)
454 * Feature set definitions (that might not be in ext2_fs.h
457 #ifndef EXT2_FEATURE_COMPAT_DIR_PREALLOC
458 #define EXT2_FEATURE_COMPAT_DIR_PREALLOC 0x0001
461 #ifndef EXT2_FEATURE_COMPAT_IMAGIC_INODES /* for AFS, etc. */
462 #define EXT2_FEATURE_COMPAT_IMAGIC_INODES 0x0002
463 #define EXT2_IMAGIC_FL 0x00002000
466 #ifndef EXT3_FEATURE_COMPAT_HAS_JOURNAL
467 #define EXT3_FEATURE_COMPAT_HAS_JOURNAL 0x0004
470 #ifndef EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER
471 #define EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER 0x0001
474 #ifndef EXT2_FEATURE_RO_COMPAT_LARGE_FILE
475 #define EXT2_FEATURE_RO_COMPAT_LARGE_FILE 0x0002
476 #define i_size_high i_dir_acl
479 #ifndef EXT2_FEATURE_RO_COMPAT_BTREE_DIR
480 #define EXT2_FEATURE_RO_COMPAT_BTREE_DIR 0x0004
483 #ifndef EXT2_FEATURE_INCOMPAT_COMPRESSION
484 #define EXT2_FEATURE_INCOMPAT_COMPRESSION 0x0001
487 #ifndef EXT2_FEATURE_INCOMPAT_FILETYPE
488 #define EXT2_FEATURE_INCOMPAT_FILETYPE 0x0002
491 #ifndef EXT3_FEATURE_INCOMPAT_RECOVER
492 #define EXT3_FEATURE_INCOMPAT_RECOVER 0x0004 /* Needs recovery */
495 #define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\
496 EXT2_FEATURE_COMPAT_IMAGIC_INODES|\
497 EXT3_FEATURE_COMPAT_HAS_JOURNAL)
498 /* This #ifdef is temporary until compression is fully supported */
499 #ifdef ENABLE_COMPRESSION
500 #ifndef I_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL
501 /* If the below warning bugs you, then have
502 `CPPFLAGS=-DI_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL' in your
503 environment at configure time. */
504 #warning "Compression support is experimental"
506 #define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\
507 EXT2_FEATURE_INCOMPAT_COMPRESSION|\
508 EXT3_FEATURE_INCOMPAT_RECOVER)
510 #define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\
511 EXT3_FEATURE_INCOMPAT_RECOVER)
513 #define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\
514 EXT2_FEATURE_RO_COMPAT_LARGE_FILE)
516 * function prototypes
520 extern errcode_t ext2fs_new_inode(ext2_filsys fs, ino_t dir, int mode,
521 ext2fs_inode_bitmap map, ino_t *ret);
522 extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal,
523 ext2fs_block_bitmap map, blk_t *ret);
524 extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start,
525 blk_t finish, int num,
526 ext2fs_block_bitmap map,
528 extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal,
529 char *block_buf, blk_t *ret);
532 extern errcode_t ext2fs_allocate_tables(ext2_filsys fs);
533 extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group,
534 ext2fs_block_bitmap bmap);
537 extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret,
539 extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb,
541 extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb,
544 ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb,
545 ext2_badblocks_iterate *ret);
546 extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter,
548 extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter);
549 extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src,
550 ext2_badblocks_list *dest);
551 extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1,
552 ext2_badblocks_list bb2);
555 extern errcode_t badblocks_list_create(badblocks_list *ret, int size);
556 extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk);
557 extern int badblocks_list_test(badblocks_list bb, blk_t blk);
558 extern errcode_t badblocks_list_iterate_begin(badblocks_list bb,
559 badblocks_iterate *ret);
560 extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk);
561 extern void badblocks_list_iterate_end(badblocks_iterate iter);
562 extern void badblocks_list_free(badblocks_list bb);
565 extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs,
566 ext2_badblocks_list bb_list);
569 extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs);
570 extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs);
571 extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs);
572 extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs);
573 extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start,
577 ext2fs_generic_bitmap *ret);
578 extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs,
580 ext2fs_block_bitmap *ret);
581 extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs,
583 ext2fs_inode_bitmap *ret);
584 extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap,
585 ino_t end, ino_t *oend);
586 extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap,
587 blk_t end, blk_t *oend);
588 extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap);
589 extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap);
590 extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs);
591 extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs);
594 extern errcode_t ext2fs_block_iterate(ext2_filsys fs,
598 int (*func)(ext2_filsys fs,
603 errcode_t ext2fs_block_iterate2(ext2_filsys fs,
607 int (*func)(ext2_filsys fs,
609 e2_blkcnt_t blockcnt,
616 extern errcode_t ext2fs_bmap(ext2_filsys fs, ino_t ino,
617 struct ext2_inode *inode,
618 char *block_buf, int bmap_flags,
619 blk_t block, blk_t *phys_blk);
624 extern errcode_t ext2fs_move_blocks(ext2_filsys fs,
625 ext2fs_block_bitmap reserve,
626 ext2fs_block_bitmap alloc_map,
631 extern errcode_t ext2fs_check_desc(ext2_filsys fs);
634 extern errcode_t ext2fs_close(ext2_filsys fs);
635 extern errcode_t ext2fs_flush(ext2_filsys fs);
636 extern int ext2fs_bg_has_super(ext2_filsys fs, int group_block);
639 extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1,
640 ext2fs_block_bitmap bm2);
641 extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1,
642 ext2fs_inode_bitmap bm2);
646 extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ino_t *ret_num_dirs);
647 extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist);
648 extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ino_t ino,
649 blk_t blk, int blockcnt);
650 extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist,
651 int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info,
654 extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ino_t ino,
655 blk_t blk, int blockcnt);
656 extern errcode_t ext2fs_copy_dblist(ext2_dblist src,
658 extern int ext2fs_dblist_count(ext2_dblist dblist);
662 ext2fs_dblist_dir_iterate(ext2_dblist dblist,
665 int (*func)(ino_t dir,
667 struct ext2_dir_entry *dirent,
675 extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block,
677 extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block,
681 extern errcode_t ext2fs_dir_iterate(ext2_filsys fs,
685 int (*func)(struct ext2_dir_entry *dirent,
693 extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest);
696 extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ino_t dir);
699 extern errcode_t ext2fs_file_open(ext2_filsys fs, ino_t ino,
700 int flags, ext2_file_t *ret);
701 extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file);
702 extern errcode_t ext2fs_file_close(ext2_file_t file);
703 extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf,
704 unsigned int wanted, unsigned int *got);
705 extern errcode_t ext2fs_file_write(ext2_file_t file, void *buf,
706 unsigned int nbytes, unsigned int *written);
707 extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset,
708 int whence, ext2_off_t *ret_pos);
709 extern ext2_off_t ext2fs_file_get_size(ext2_file_t file);
710 extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size);
713 extern char *ext2fs_find_block_device(dev_t device);
716 extern void ext2fs_free(ext2_filsys fs);
717 extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap);
718 extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap);
719 extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap);
720 extern void ext2fs_free_dblist(ext2_dblist dblist);
721 extern void ext2fs_badblocks_list_free(badblocks_list bb);
724 extern errcode_t ext2fs_get_device_size(const char *file, int blocksize,
728 extern errcode_t ext2fs_initialize(const char *name, int flags,
729 struct ext2_super_block *param,
730 io_manager manager, ext2_filsys *ret_fs);
733 extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks,
734 ext2_inode_scan *ret_scan);
735 extern void ext2fs_close_inode_scan(ext2_inode_scan scan);
736 extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ino_t *ino,
737 struct ext2_inode *inode);
738 extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan,
740 extern void ext2fs_set_inode_callback
741 (ext2_inode_scan scan,
742 errcode_t (*done_group)(ext2_filsys fs,
743 ext2_inode_scan scan,
746 void *done_group_data);
747 extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags,
749 extern errcode_t ext2fs_read_inode (ext2_filsys fs, ino_t ino,
750 struct ext2_inode * inode);
751 extern errcode_t ext2fs_write_inode(ext2_filsys fs, ino_t ino,
752 struct ext2_inode * inode);
753 extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ino_t ino, blk_t *blocks);
754 extern errcode_t ext2fs_check_directory(ext2_filsys fs, ino_t ino);
757 extern void ext2fs_free_icount(ext2_icount_t icount);
758 extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags, int size,
759 ext2_icount_t hint, ext2_icount_t *ret);
760 extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags, int size,
762 extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ino_t ino,
764 extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ino_t ino,
766 extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ino_t ino,
768 extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ino_t ino,
770 extern ino_t ext2fs_get_icount_size(ext2_icount_t icount);
771 errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *);
774 extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags);
777 extern errcode_t ext2fs_lookup(ext2_filsys fs, ino_t dir, const char *name,
778 int namelen, char *buf, ino_t *inode);
779 extern errcode_t ext2fs_namei(ext2_filsys fs, ino_t root, ino_t cwd,
780 const char *name, ino_t *inode);
781 errcode_t ext2fs_namei_follow(ext2_filsys fs, ino_t root, ino_t cwd,
782 const char *name, ino_t *inode);
783 extern errcode_t ext2fs_follow_link(ext2_filsys fs, ino_t root, ino_t cwd,
784 ino_t inode, ino_t *res_inode);
787 int ext2fs_native_flag(void);
790 extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ino_t dir_ino,
791 ino_t parent_ino, char **block);
794 extern errcode_t ext2fs_mkdir(ext2_filsys fs, ino_t parent, ino_t inum,
798 extern errcode_t ext2fs_add_journal_device(ext2_filsys fs, char *device,
800 extern errcode_t ext2fs_add_journal_fs(ext2_filsys fs, blk_t size);
803 extern errcode_t ext2fs_open(const char *name, int flags, int superblock,
804 int block_size, io_manager manager,
805 ext2_filsys *ret_fs);
808 extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ino_t dir, ino_t ino,
812 errcode_t ext2fs_link(ext2_filsys fs, ino_t dir, const char *name,
813 ino_t ino, int flags);
814 errcode_t ext2fs_unlink(ext2_filsys fs, ino_t dir, const char *name,
815 ino_t ino, int flags);
818 extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs,
819 ext2_badblocks_list *bb_list);
822 extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f,
823 ext2_badblocks_list *bb_list,
825 void (*invalid)(ext2_filsys fs,
829 extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f,
830 ext2_badblocks_list *bb_list,
831 void (*invalid)(ext2_filsys fs,
835 extern errcode_t ext2fs_resize_generic_bitmap(__u32 new_end,
837 ext2fs_generic_bitmap bmap);
838 extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end,
839 ext2fs_inode_bitmap bmap);
840 extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end,
841 ext2fs_block_bitmap bmap);
842 extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src,
843 ext2fs_generic_bitmap *dest);
846 extern void ext2fs_swap_super(struct ext2_super_block * super);
847 extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp);
848 extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t,
849 struct ext2_inode *f, int hostorder);
852 extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode);
855 extern int ext2fs_parse_version_string(const char *ver_string);
856 extern int ext2fs_get_library_version(const char **ver_string,
857 const char **date_string);
859 /* inline functions */
860 extern errcode_t ext2fs_get_mem(unsigned long size, void **ptr);
861 extern errcode_t ext2fs_free_mem(void **ptr);
862 extern errcode_t ext2fs_resize_mem(unsigned long old_size,
863 unsigned long size, void **ptr);
864 extern void ext2fs_mark_super_dirty(ext2_filsys fs);
865 extern void ext2fs_mark_changed(ext2_filsys fs);
866 extern int ext2fs_test_changed(ext2_filsys fs);
867 extern void ext2fs_mark_valid(ext2_filsys fs);
868 extern void ext2fs_unmark_valid(ext2_filsys fs);
869 extern int ext2fs_test_valid(ext2_filsys fs);
870 extern void ext2fs_mark_ib_dirty(ext2_filsys fs);
871 extern void ext2fs_mark_bb_dirty(ext2_filsys fs);
872 extern int ext2fs_test_ib_dirty(ext2_filsys fs);
873 extern int ext2fs_test_bb_dirty(ext2_filsys fs);
874 extern int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk);
875 extern int ext2fs_group_of_ino(ext2_filsys fs, ino_t ino);
878 * The actual inlined functions definitions themselves...
880 * If NO_INLINE_FUNCS is defined, then we won't try to do inline
883 #if (defined(INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS))
884 #ifdef INCLUDE_INLINE_FUNCS
885 #define _INLINE_ extern
888 #define _INLINE_ extern __inline__
889 #else /* For Watcom C */
890 #define _INLINE_ extern inline
894 #ifndef EXT2_CUSTOM_MEMORY_ROUTINES
898 _INLINE_ errcode_t ext2fs_get_mem(unsigned long size, void **ptr)
902 return EXT2_ET_NO_MEMORY;
909 _INLINE_ errcode_t ext2fs_free_mem(void **ptr)
919 _INLINE_ errcode_t ext2fs_resize_mem(unsigned long old_size,
920 unsigned long size, void **ptr)
924 p = realloc(*ptr, size);
926 return EXT2_ET_NO_MEMORY;
930 #endif /* Custom memory routines */
933 * Mark a filesystem superblock as dirty
935 _INLINE_ void ext2fs_mark_super_dirty(ext2_filsys fs)
937 fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_CHANGED;
941 * Mark a filesystem as changed
943 _INLINE_ void ext2fs_mark_changed(ext2_filsys fs)
945 fs->flags |= EXT2_FLAG_CHANGED;
949 * Check to see if a filesystem has changed
951 _INLINE_ int ext2fs_test_changed(ext2_filsys fs)
953 return (fs->flags & EXT2_FLAG_CHANGED);
957 * Mark a filesystem as valid
959 _INLINE_ void ext2fs_mark_valid(ext2_filsys fs)
961 fs->flags |= EXT2_FLAG_VALID;
965 * Mark a filesystem as NOT valid
967 _INLINE_ void ext2fs_unmark_valid(ext2_filsys fs)
969 fs->flags &= ~EXT2_FLAG_VALID;
973 * Check to see if a filesystem is valid
975 _INLINE_ int ext2fs_test_valid(ext2_filsys fs)
977 return (fs->flags & EXT2_FLAG_VALID);
981 * Mark the inode bitmap as dirty
983 _INLINE_ void ext2fs_mark_ib_dirty(ext2_filsys fs)
985 fs->flags |= EXT2_FLAG_IB_DIRTY | EXT2_FLAG_CHANGED;
989 * Mark the block bitmap as dirty
991 _INLINE_ void ext2fs_mark_bb_dirty(ext2_filsys fs)
993 fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_CHANGED;
997 * Check to see if a filesystem's inode bitmap is dirty
999 _INLINE_ int ext2fs_test_ib_dirty(ext2_filsys fs)
1001 return (fs->flags & EXT2_FLAG_IB_DIRTY);
1005 * Check to see if a filesystem's block bitmap is dirty
1007 _INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs)
1009 return (fs->flags & EXT2_FLAG_BB_DIRTY);
1013 * Return the group # of a block
1015 _INLINE_ int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk)
1017 return (blk - fs->super->s_first_data_block) /
1018 fs->super->s_blocks_per_group;
1022 * Return the group # of an inode number
1024 _INLINE_ int ext2fs_group_of_ino(ext2_filsys fs, ino_t ino)
1026 return (ino - 1) / fs->super->s_inodes_per_group;
1035 #endif /* _EXT2FS_EXT2FS_H */