4 * Copyright (C) 1993, 1994, 1995, 1996 Theodore Ts'o.
7 * This file may be redistributed under the terms of the GNU Public
12 #ifndef _EXT2FS_EXT2FS_H
13 #define _EXT2FS_EXT2FS_H
16 #define EXT2FS_ATTR(x) __attribute__(x)
18 #define EXT2FS_ATTR(x)
26 * Non-GNU C compilers won't necessarily understand inline
28 #if (!defined(__GNUC__) && !defined(__WATCOMC__))
29 #define NO_INLINE_FUNCS
33 * Build in support for byte-swapping filesystems if we the feature
34 * has been configured or if we're being built on a CPU architecture
35 * with a non-native byte order.
37 #if defined(ENABLE_SWAPFS) || defined(WORDS_BIGENDIAN)
38 #define EXT2FS_ENABLE_SWAPFS
42 * Where the master copy of the superblock is located, and how big
43 * superblocks are supposed to be. We define SUPERBLOCK_SIZE because
44 * the size of the superblock structure is not necessarily trustworthy
45 * (some versions have the padding set up so that the superblock is
48 #define SUPERBLOCK_OFFSET 1024
49 #define SUPERBLOCK_SIZE 1024
52 * The last ext2fs revision level that this version of the library is
55 #define EXT2_LIB_CURRENT_REV EXT2_DYNAMIC_REV
57 #ifdef HAVE_SYS_TYPES_H
58 #include <sys/types.h>
64 #if EXT2_FLAT_INCLUDES
68 #include <ext2fs/ext2_types.h>
69 #include <ext2fs/ext2_fs.h>
70 #endif /* EXT2_FLAT_INCLUDES */
72 typedef __u32 ext2_ino_t;
75 typedef __u32 ext2_off_t;
76 typedef __s64 e2_blkcnt_t;
77 typedef __u32 ext2_dirhash_t;
79 #if EXT2_FLAT_INCLUDES
84 #include <et/com_err.h>
85 #include <ext2fs/ext2_io.h>
86 #include <ext2fs/ext2_err.h>
90 * Portability help for Microsoft Visual C++
93 #define EXT2_QSORT_TYPE int __cdecl
95 #define EXT2_QSORT_TYPE int
98 typedef struct struct_ext2_filsys *ext2_filsys;
100 struct ext2fs_struct_generic_bitmap {
107 errcode_t base_error_code;
111 #define EXT2FS_MARK_ERROR 0
112 #define EXT2FS_UNMARK_ERROR 1
113 #define EXT2FS_TEST_ERROR 2
115 typedef struct ext2fs_struct_generic_bitmap *ext2fs_generic_bitmap;
116 typedef struct ext2fs_struct_generic_bitmap *ext2fs_inode_bitmap;
117 typedef struct ext2fs_struct_generic_bitmap *ext2fs_block_bitmap;
119 #ifdef EXT2_DYNAMIC_REV
120 #define EXT2_FIRST_INODE(s) EXT2_FIRST_INO(s)
122 #define EXT2_FIRST_INODE(s) EXT2_FIRST_INO
123 #define EXT2_INODE_SIZE(s) sizeof(struct ext2_inode)
127 * badblocks list definitions
130 typedef struct ext2_struct_u32_list *ext2_badblocks_list;
131 typedef struct ext2_struct_u32_iterate *ext2_badblocks_iterate;
133 typedef struct ext2_struct_u32_list *ext2_u32_list;
134 typedef struct ext2_struct_u32_iterate *ext2_u32_iterate;
137 typedef struct ext2_struct_u32_list *badblocks_list;
138 typedef struct ext2_struct_u32_iterate *badblocks_iterate;
140 #define BADBLOCKS_FLAG_DIRTY 1
143 * ext2_dblist structure and abstractions (see dblist.c)
145 struct ext2_db_entry {
151 typedef struct ext2_struct_dblist *ext2_dblist;
153 #define DBLIST_ABORT 1
156 * ext2_fileio definitions
159 #define EXT2_FILE_WRITE 0x0001
160 #define EXT2_FILE_CREATE 0x0002
162 #define EXT2_FILE_MASK 0x00FF
164 #define EXT2_FILE_BUF_DIRTY 0x4000
165 #define EXT2_FILE_BUF_VALID 0x2000
167 typedef struct ext2_file *ext2_file_t;
169 #define EXT2_SEEK_SET 0
170 #define EXT2_SEEK_CUR 1
171 #define EXT2_SEEK_END 2
174 * Flags for the ext2_filsys structure and for ext2fs_open()
176 #define EXT2_FLAG_RW 0x01
177 #define EXT2_FLAG_CHANGED 0x02
178 #define EXT2_FLAG_DIRTY 0x04
179 #define EXT2_FLAG_VALID 0x08
180 #define EXT2_FLAG_IB_DIRTY 0x10
181 #define EXT2_FLAG_BB_DIRTY 0x20
182 #define EXT2_FLAG_SWAP_BYTES 0x40
183 #define EXT2_FLAG_SWAP_BYTES_READ 0x80
184 #define EXT2_FLAG_SWAP_BYTES_WRITE 0x100
185 #define EXT2_FLAG_MASTER_SB_ONLY 0x200
186 #define EXT2_FLAG_FORCE 0x400
187 #define EXT2_FLAG_SUPER_ONLY 0x800
188 #define EXT2_FLAG_JOURNAL_DEV_OK 0x1000
189 #define EXT2_FLAG_IMAGE_FILE 0x2000
192 * Special flag in the ext2 inode i_flag field that means that this is
193 * a new inode. (So that ext2_write_inode() can clear extra fields.)
195 #define EXT2_NEW_INODE_FL 0x80000000
198 * Flags for mkjournal
200 * EXT2_MKJOURNAL_V1_SUPER Make a (deprecated) V1 journal superblock
202 #define EXT2_MKJOURNAL_V1_SUPER 0x0000001
204 struct struct_ext2_filsys {
209 struct ext2_super_block * super;
210 unsigned int blocksize;
212 dgrp_t group_desc_count;
213 unsigned long desc_blocks;
214 struct ext2_group_desc * group_desc;
215 int inode_blocks_per_group;
216 ext2fs_inode_bitmap inode_map;
217 ext2fs_block_bitmap block_map;
218 errcode_t (*get_blocks)(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks);
219 errcode_t (*check_directory)(ext2_filsys fs, ext2_ino_t ino);
220 errcode_t (*write_bitmaps)(ext2_filsys fs);
221 errcode_t (*read_inode)(ext2_filsys fs, ext2_ino_t ino,
222 struct ext2_inode *inode);
223 errcode_t (*write_inode)(ext2_filsys fs, ext2_ino_t ino,
224 struct ext2_inode *inode);
225 ext2_badblocks_list badblocks;
227 __u32 stride; /* for mke2fs */
228 struct ext2_super_block * orig_super;
229 struct ext2_image_hdr * image_header;
232 * Reserved for future expansion
237 * Reserved for the use of the calling application.
244 struct ext2_inode_cache *icache;
248 #if EXT2_FLAT_INCLUDES
249 #include "e2_bitops.h"
251 #include <ext2fs/bitops.h>
255 * Return flags for the block iterator functions
257 #define BLOCK_CHANGED 1
258 #define BLOCK_ABORT 2
259 #define BLOCK_ERROR 4
262 * Block interate flags
264 * BLOCK_FLAG_APPEND, or BLOCK_FLAG_HOLE, indicates that the interator
265 * function should be called on blocks where the block number is zero.
266 * This is used by ext2fs_expand_dir() to be able to add a new block
267 * to an inode. It can also be used for programs that want to be able
268 * to deal with files that contain "holes".
270 * BLOCK_FLAG_TRAVERSE indicates that the iterator function for the
271 * indirect, doubly indirect, etc. blocks should be called after all
272 * of the blocks containined in the indirect blocks are processed.
273 * This is useful if you are going to be deallocating blocks from an
276 * BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be
277 * called for data blocks only.
279 * BLOCK_FLAG_NO_LARGE is for internal use only. It informs
280 * ext2fs_block_iterate2 that large files won't be accepted.
282 #define BLOCK_FLAG_APPEND 1
283 #define BLOCK_FLAG_HOLE 1
284 #define BLOCK_FLAG_DEPTH_TRAVERSE 2
285 #define BLOCK_FLAG_DATA_ONLY 4
287 #define BLOCK_FLAG_NO_LARGE 0x1000
290 * Magic "block count" return values for the block iterator function.
292 #define BLOCK_COUNT_IND (-1)
293 #define BLOCK_COUNT_DIND (-2)
294 #define BLOCK_COUNT_TIND (-3)
295 #define BLOCK_COUNT_TRANSLATOR (-4)
299 * Flags for ext2fs_move_blocks
301 #define EXT2_BMOVE_GET_DBLIST 0x0001
302 #define EXT2_BMOVE_DEBUG 0x0002
306 * Flags for directory block reading and writing functions
308 #define EXT2_DIRBLOCK_V2_STRUCT 0x0001
311 * Return flags for the directory iterator functions
313 #define DIRENT_CHANGED 1
314 #define DIRENT_ABORT 2
315 #define DIRENT_ERROR 3
318 * Directory iterator flags
321 #define DIRENT_FLAG_INCLUDE_EMPTY 1
322 #define DIRENT_FLAG_INCLUDE_REMOVED 2
324 #define DIRENT_DOT_FILE 1
325 #define DIRENT_DOT_DOT_FILE 2
326 #define DIRENT_OTHER_FILE 3
327 #define DIRENT_DELETED_FILE 4
330 * Inode scan definitions
332 typedef struct ext2_struct_inode_scan *ext2_inode_scan;
337 #define EXT2_SF_CHK_BADBLOCKS 0x0001
338 #define EXT2_SF_BAD_INODE_BLK 0x0002
339 #define EXT2_SF_BAD_EXTRA_BYTES 0x0004
340 #define EXT2_SF_SKIP_MISSING_ITABLE 0x0008
343 * ext2fs_check_if_mounted flags
345 #define EXT2_MF_MOUNTED 1
346 #define EXT2_MF_ISROOT 2
347 #define EXT2_MF_READONLY 4
348 #define EXT2_MF_SWAP 8
351 * Ext2/linux mode flags. We define them here so that we don't need
352 * to depend on the OS's sys/stat.h, since we may be compiling on a
355 #define LINUX_S_IFMT 00170000
356 #define LINUX_S_IFSOCK 0140000
357 #define LINUX_S_IFLNK 0120000
358 #define LINUX_S_IFREG 0100000
359 #define LINUX_S_IFBLK 0060000
360 #define LINUX_S_IFDIR 0040000
361 #define LINUX_S_IFCHR 0020000
362 #define LINUX_S_IFIFO 0010000
363 #define LINUX_S_ISUID 0004000
364 #define LINUX_S_ISGID 0002000
365 #define LINUX_S_ISVTX 0001000
367 #define LINUX_S_IRWXU 00700
368 #define LINUX_S_IRUSR 00400
369 #define LINUX_S_IWUSR 00200
370 #define LINUX_S_IXUSR 00100
372 #define LINUX_S_IRWXG 00070
373 #define LINUX_S_IRGRP 00040
374 #define LINUX_S_IWGRP 00020
375 #define LINUX_S_IXGRP 00010
377 #define LINUX_S_IRWXO 00007
378 #define LINUX_S_IROTH 00004
379 #define LINUX_S_IWOTH 00002
380 #define LINUX_S_IXOTH 00001
382 #define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK)
383 #define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG)
384 #define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR)
385 #define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR)
386 #define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK)
387 #define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO)
388 #define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK)
391 * ext2 size of an inode
393 #define EXT2_I_SIZE(i) ((i)->i_size | ((__u64) (i)->i_size_high << 32))
396 * ext2_icount_t abstraction
398 #define EXT2_ICOUNT_OPT_INCREMENT 0x01
400 typedef struct ext2_icount *ext2_icount_t;
403 * Flags for ext2fs_bmap
405 #define BMAP_ALLOC 0x0001
406 #define BMAP_SET 0x0002
409 * Flags for imager.c functions
411 #define IMAGER_FLAG_INODEMAP 1
412 #define IMAGER_FLAG_SPARSEWRITE 2
415 * For checking structure magic numbers...
418 #define EXT2_CHECK_MAGIC(struct, code) \
419 if ((struct)->magic != (code)) return (code)
423 * For ext2 compression support
425 #define EXT2FS_COMPRESSED_BLKADDR ((blk_t) 0xffffffff)
426 #define HOLE_BLKADDR(_b) ((_b) == 0 || (_b) == EXT2FS_COMPRESSED_BLKADDR)
429 * Features supported by this version of the library
431 #define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\
432 EXT2_FEATURE_COMPAT_IMAGIC_INODES|\
433 EXT3_FEATURE_COMPAT_HAS_JOURNAL|\
434 EXT2_FEATURE_COMPAT_RESIZE_INODE|\
435 EXT2_FEATURE_COMPAT_DIR_INDEX|\
436 EXT2_FEATURE_COMPAT_EXT_ATTR)
438 /* This #ifdef is temporary until compression is fully supported */
439 #ifdef ENABLE_COMPRESSION
440 #ifndef I_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL
441 /* If the below warning bugs you, then have
442 `CPPFLAGS=-DI_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL' in your
443 environment at configure time. */
444 #warning "Compression support is experimental"
446 #define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\
447 EXT2_FEATURE_INCOMPAT_COMPRESSION|\
448 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\
449 EXT2_FEATURE_INCOMPAT_META_BG|\
450 EXT3_FEATURE_INCOMPAT_RECOVER)
452 #define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\
453 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\
454 EXT2_FEATURE_INCOMPAT_META_BG|\
455 EXT3_FEATURE_INCOMPAT_RECOVER)
457 #define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\
458 EXT2_FEATURE_RO_COMPAT_LARGE_FILE)
460 * function prototypes
464 extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode,
465 ext2fs_inode_bitmap map, ext2_ino_t *ret);
466 extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal,
467 ext2fs_block_bitmap map, blk_t *ret);
468 extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start,
469 blk_t finish, int num,
470 ext2fs_block_bitmap map,
472 extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal,
473 char *block_buf, blk_t *ret);
476 extern int ext2fs_reserve_super_and_bgd(ext2_filsys fs,
478 ext2fs_block_bitmap bmap);
481 void ext2fs_inode_alloc_stats(ext2_filsys fs, ext2_ino_t ino, int inuse);
482 void ext2fs_inode_alloc_stats2(ext2_filsys fs, ext2_ino_t ino,
483 int inuse, int isdir);
484 void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse);
487 extern errcode_t ext2fs_allocate_tables(ext2_filsys fs);
488 extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group,
489 ext2fs_block_bitmap bmap);
492 extern errcode_t ext2fs_u32_list_create(ext2_u32_list *ret, int size);
493 extern errcode_t ext2fs_u32_list_add(ext2_u32_list bb, __u32 blk);
494 extern int ext2fs_u32_list_find(ext2_u32_list bb, __u32 blk);
495 extern int ext2fs_u32_list_test(ext2_u32_list bb, blk_t blk);
496 extern errcode_t ext2fs_u32_list_iterate_begin(ext2_u32_list bb,
497 ext2_u32_iterate *ret);
498 extern int ext2fs_u32_list_iterate(ext2_u32_iterate iter, blk_t *blk);
499 extern void ext2fs_u32_list_iterate_end(ext2_u32_iterate iter);
500 extern errcode_t ext2fs_u32_copy(ext2_u32_list src, ext2_u32_list *dest);
501 extern int ext2fs_u32_list_equal(ext2_u32_list bb1, ext2_u32_list bb2);
503 extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret,
505 extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb,
507 extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb,
509 extern int ext2fs_u32_list_del(ext2_u32_list bb, __u32 blk);
510 extern void ext2fs_badblocks_list_del(ext2_u32_list bb, __u32 blk);
512 ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb,
513 ext2_badblocks_iterate *ret);
514 extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter,
516 extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter);
517 extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src,
518 ext2_badblocks_list *dest);
519 extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1,
520 ext2_badblocks_list bb2);
521 extern int ext2fs_u32_list_count(ext2_u32_list bb);
524 extern errcode_t badblocks_list_create(badblocks_list *ret, int size);
525 extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk);
526 extern int badblocks_list_test(badblocks_list bb, blk_t blk);
527 extern errcode_t badblocks_list_iterate_begin(badblocks_list bb,
528 badblocks_iterate *ret);
529 extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk);
530 extern void badblocks_list_iterate_end(badblocks_iterate iter);
531 extern void badblocks_list_free(badblocks_list bb);
534 extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs,
535 ext2_badblocks_list bb_list);
538 extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs);
539 extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs);
540 extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs);
541 extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs);
542 extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start,
546 ext2fs_generic_bitmap *ret);
547 extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs,
549 ext2fs_block_bitmap *ret);
550 extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs,
552 ext2fs_inode_bitmap *ret);
553 extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap,
554 ext2_ino_t end, ext2_ino_t *oend);
555 extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap,
556 blk_t end, blk_t *oend);
557 extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap);
558 extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap);
559 extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs);
560 extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs);
563 extern errcode_t ext2fs_block_iterate(ext2_filsys fs,
567 int (*func)(ext2_filsys fs,
572 errcode_t ext2fs_block_iterate2(ext2_filsys fs,
576 int (*func)(ext2_filsys fs,
578 e2_blkcnt_t blockcnt,
585 extern errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino,
586 struct ext2_inode *inode,
587 char *block_buf, int bmap_flags,
588 blk_t block, blk_t *phys_blk);
593 extern errcode_t ext2fs_move_blocks(ext2_filsys fs,
594 ext2fs_block_bitmap reserve,
595 ext2fs_block_bitmap alloc_map,
600 extern errcode_t ext2fs_check_desc(ext2_filsys fs);
603 extern errcode_t ext2fs_close(ext2_filsys fs);
604 extern errcode_t ext2fs_flush(ext2_filsys fs);
605 extern int ext2fs_bg_has_super(ext2_filsys fs, int group_block);
606 extern int ext2fs_super_and_bgd_loc(ext2_filsys fs,
608 blk_t *ret_super_blk,
609 blk_t *ret_old_desc_blk,
610 blk_t *ret_new_desc_blk,
612 extern void ext2fs_update_dynamic_rev(ext2_filsys fs);
615 extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1,
616 ext2fs_block_bitmap bm2);
617 extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1,
618 ext2fs_inode_bitmap bm2);
622 extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs);
623 extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist);
624 extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ext2_ino_t ino,
625 blk_t blk, int blockcnt);
626 extern void ext2fs_dblist_sort(ext2_dblist dblist,
627 EXT2_QSORT_TYPE (*sortfunc)(const void *,
629 extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist,
630 int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info,
633 extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ext2_ino_t ino,
634 blk_t blk, int blockcnt);
635 extern errcode_t ext2fs_copy_dblist(ext2_dblist src,
637 extern int ext2fs_dblist_count(ext2_dblist dblist);
641 ext2fs_dblist_dir_iterate(ext2_dblist dblist,
644 int (*func)(ext2_ino_t dir,
646 struct ext2_dir_entry *dirent,
654 extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block,
656 extern errcode_t ext2fs_read_dir_block2(ext2_filsys fs, blk_t block,
657 void *buf, int flags);
658 extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block,
660 extern errcode_t ext2fs_write_dir_block2(ext2_filsys fs, blk_t block,
661 void *buf, int flags);
664 extern errcode_t ext2fs_dirhash(int version, const char *name, int len,
666 ext2_dirhash_t *ret_hash,
667 ext2_dirhash_t *ret_minor_hash);
671 extern errcode_t ext2fs_dir_iterate(ext2_filsys fs,
675 int (*func)(struct ext2_dir_entry *dirent,
681 extern errcode_t ext2fs_dir_iterate2(ext2_filsys fs,
685 int (*func)(ext2_ino_t dir,
687 struct ext2_dir_entry *dirent,
695 extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest);
698 extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir);
701 extern errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf);
702 extern errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block,
704 extern errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk,
706 int adjust, __u32 *newcount);
709 extern errcode_t ext2fs_file_open2(ext2_filsys fs, ext2_ino_t ino,
710 struct ext2_inode *inode,
711 int flags, ext2_file_t *ret);
712 extern errcode_t ext2fs_file_open(ext2_filsys fs, ext2_ino_t ino,
713 int flags, ext2_file_t *ret);
714 extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file);
715 extern errcode_t ext2fs_file_close(ext2_file_t file);
716 extern errcode_t ext2fs_file_flush(ext2_file_t file);
717 extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf,
718 unsigned int wanted, unsigned int *got);
719 extern errcode_t ext2fs_file_write(ext2_file_t file, const void *buf,
720 unsigned int nbytes, unsigned int *written);
721 extern errcode_t ext2fs_file_llseek(ext2_file_t file, __u64 offset,
722 int whence, __u64 *ret_pos);
723 extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset,
724 int whence, ext2_off_t *ret_pos);
725 errcode_t ext2fs_file_get_lsize(ext2_file_t file, __u64 *ret_size);
726 extern ext2_off_t ext2fs_file_get_size(ext2_file_t file);
727 extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size);
730 extern char *ext2fs_find_block_device(dev_t device);
733 extern errcode_t ext2fs_sync_device(int fd, int flushb);
736 extern void ext2fs_free(ext2_filsys fs);
737 extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap);
738 extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap);
739 extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap);
740 extern void ext2fs_free_dblist(ext2_dblist dblist);
741 extern void ext2fs_badblocks_list_free(ext2_badblocks_list bb);
742 extern void ext2fs_u32_list_free(ext2_u32_list bb);
745 extern errcode_t ext2fs_get_device_size(const char *file, int blocksize,
749 errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize);
752 extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags);
753 extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags);
754 extern errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd, int flags);
755 extern errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd, int flags);
756 extern errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags);
757 extern errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags);
760 errcode_t ext2fs_read_ind_block(ext2_filsys fs, blk_t blk, void *buf);
761 errcode_t ext2fs_write_ind_block(ext2_filsys fs, blk_t blk, void *buf);
764 extern errcode_t ext2fs_initialize(const char *name, int flags,
765 struct ext2_super_block *param,
766 io_manager manager, ext2_filsys *ret_fs);
769 extern void ext2fs_free_icount(ext2_icount_t icount);
770 extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags,
772 ext2_icount_t hint, ext2_icount_t *ret);
773 extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags,
776 extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ext2_ino_t ino,
778 extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ext2_ino_t ino,
780 extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ext2_ino_t ino,
782 extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ext2_ino_t ino,
784 extern ext2_ino_t ext2fs_get_icount_size(ext2_icount_t icount);
785 errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *);
788 extern errcode_t ext2fs_flush_icache(ext2_filsys fs);
789 extern errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan,
791 struct ext2_inode *inode,
793 extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks,
794 ext2_inode_scan *ret_scan);
795 extern void ext2fs_close_inode_scan(ext2_inode_scan scan);
796 extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino,
797 struct ext2_inode *inode);
798 extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan,
800 extern void ext2fs_set_inode_callback
801 (ext2_inode_scan scan,
802 errcode_t (*done_group)(ext2_filsys fs,
803 ext2_inode_scan scan,
806 void *done_group_data);
807 extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags,
809 extern errcode_t ext2fs_read_inode_full(ext2_filsys fs, ext2_ino_t ino,
810 struct ext2_inode * inode,
812 extern errcode_t ext2fs_read_inode (ext2_filsys fs, ext2_ino_t ino,
813 struct ext2_inode * inode);
814 extern errcode_t ext2fs_write_inode_full(ext2_filsys fs, ext2_ino_t ino,
815 struct ext2_inode * inode,
817 extern errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino,
818 struct ext2_inode * inode);
819 extern errcode_t ext2fs_write_new_inode(ext2_filsys fs, ext2_ino_t ino,
820 struct ext2_inode * inode);
821 extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks);
822 extern errcode_t ext2fs_check_directory(ext2_filsys fs, ext2_ino_t ino);
825 extern io_manager inode_io_manager;
826 extern errcode_t ext2fs_inode_io_intern(ext2_filsys fs, ext2_ino_t ino,
828 extern errcode_t ext2fs_inode_io_intern2(ext2_filsys fs, ext2_ino_t ino,
829 struct ext2_inode *inode,
833 extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags);
834 extern errcode_t ext2fs_check_mount_point(const char *device, int *mount_flags,
835 char *mtpt, int mtlen);
838 extern errcode_t ext2fs_lookup(ext2_filsys fs, ext2_ino_t dir, const char *name,
839 int namelen, char *buf, ext2_ino_t *inode);
840 extern errcode_t ext2fs_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
841 const char *name, ext2_ino_t *inode);
842 errcode_t ext2fs_namei_follow(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
843 const char *name, ext2_ino_t *inode);
844 extern errcode_t ext2fs_follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
845 ext2_ino_t inode, ext2_ino_t *res_inode);
848 int ext2fs_native_flag(void);
851 extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino,
852 ext2_ino_t parent_ino, char **block);
855 extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum,
859 extern errcode_t ext2fs_create_journal_superblock(ext2_filsys fs,
860 __u32 size, int flags,
862 extern errcode_t ext2fs_add_journal_device(ext2_filsys fs,
863 ext2_filsys journal_dev);
864 extern errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t size,
868 extern errcode_t ext2fs_open(const char *name, int flags, int superblock,
869 unsigned int block_size, io_manager manager,
870 ext2_filsys *ret_fs);
871 extern errcode_t ext2fs_open2(const char *name, const char *io_options,
872 int flags, int superblock,
873 unsigned int block_size, io_manager manager,
874 ext2_filsys *ret_fs);
875 extern blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block,
877 errcode_t ext2fs_get_data_io(ext2_filsys fs, io_channel *old_io);
878 errcode_t ext2fs_set_data_io(ext2_filsys fs, io_channel new_io);
879 errcode_t ext2fs_rewrite_to_io(ext2_filsys fs, io_channel new_io);
882 extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino,
886 errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name,
887 ext2_ino_t ino, int flags);
888 errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir, const char *name,
889 ext2_ino_t ino, int flags);
892 extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs,
893 ext2_badblocks_list *bb_list);
896 extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f,
897 ext2_badblocks_list *bb_list,
899 void (*invalid)(ext2_filsys fs,
903 extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f,
904 ext2_badblocks_list *bb_list,
905 void (*invalid)(ext2_filsys fs,
909 extern errcode_t ext2fs_create_resize_inode(ext2_filsys fs);
912 extern errcode_t ext2fs_resize_generic_bitmap(__u32 new_end,
914 ext2fs_generic_bitmap bmap);
915 extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end,
916 ext2fs_inode_bitmap bmap);
917 extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end,
918 ext2fs_block_bitmap bmap);
919 extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src,
920 ext2fs_generic_bitmap *dest);
923 extern void ext2fs_swap_ext_attr(char *to, char *from, int bufsize,
925 extern void ext2fs_swap_super(struct ext2_super_block * super);
926 extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp);
927 extern void ext2fs_swap_inode_full(ext2_filsys fs, struct ext2_inode_large *t,
928 struct ext2_inode_large *f, int hostorder,
930 extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t,
931 struct ext2_inode *f, int hostorder);
934 extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode);
937 extern int ext2fs_parse_version_string(const char *ver_string);
938 extern int ext2fs_get_library_version(const char **ver_string,
939 const char **date_string);
941 /* write_bb_file.c */
942 extern errcode_t ext2fs_write_bb_FILE(ext2_badblocks_list bb_list,
947 /* inline functions */
948 extern errcode_t ext2fs_get_mem(unsigned long size, void *ptr);
949 extern errcode_t ext2fs_free_mem(void *ptr);
950 extern errcode_t ext2fs_resize_mem(unsigned long old_size,
951 unsigned long size, void *ptr);
952 extern void ext2fs_mark_super_dirty(ext2_filsys fs);
953 extern void ext2fs_mark_changed(ext2_filsys fs);
954 extern int ext2fs_test_changed(ext2_filsys fs);
955 extern void ext2fs_mark_valid(ext2_filsys fs);
956 extern void ext2fs_unmark_valid(ext2_filsys fs);
957 extern int ext2fs_test_valid(ext2_filsys fs);
958 extern void ext2fs_mark_ib_dirty(ext2_filsys fs);
959 extern void ext2fs_mark_bb_dirty(ext2_filsys fs);
960 extern int ext2fs_test_ib_dirty(ext2_filsys fs);
961 extern int ext2fs_test_bb_dirty(ext2_filsys fs);
962 extern int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk);
963 extern int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino);
964 extern blk_t ext2fs_inode_data_blocks(ext2_filsys fs,
965 struct ext2_inode *inode);
968 * The actual inlined functions definitions themselves...
970 * If NO_INLINE_FUNCS is defined, then we won't try to do inline
973 #if (defined(INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS))
974 #ifdef INCLUDE_INLINE_FUNCS
975 #define _INLINE_ extern
978 #define _INLINE_ extern __inline__
979 #else /* For Watcom C */
980 #define _INLINE_ extern inline
984 #ifndef EXT2_CUSTOM_MEMORY_ROUTINES
988 _INLINE_ errcode_t ext2fs_get_mem(unsigned long size, void *ptr)
990 void **pp = (void **)ptr;
994 return EXT2_ET_NO_MEMORY;
1001 _INLINE_ errcode_t ext2fs_free_mem(void *ptr)
1003 void **pp = (void **)ptr;
1013 _INLINE_ errcode_t ext2fs_resize_mem(unsigned long EXT2FS_ATTR((unused)) old_size,
1014 unsigned long size, void *ptr)
1017 void **pp = (void **)ptr;
1019 p = realloc(*pp, size);
1021 return EXT2_ET_NO_MEMORY;
1025 #endif /* Custom memory routines */
1028 * Mark a filesystem superblock as dirty
1030 _INLINE_ void ext2fs_mark_super_dirty(ext2_filsys fs)
1032 fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_CHANGED;
1036 * Mark a filesystem as changed
1038 _INLINE_ void ext2fs_mark_changed(ext2_filsys fs)
1040 fs->flags |= EXT2_FLAG_CHANGED;
1044 * Check to see if a filesystem has changed
1046 _INLINE_ int ext2fs_test_changed(ext2_filsys fs)
1048 return (fs->flags & EXT2_FLAG_CHANGED);
1052 * Mark a filesystem as valid
1054 _INLINE_ void ext2fs_mark_valid(ext2_filsys fs)
1056 fs->flags |= EXT2_FLAG_VALID;
1060 * Mark a filesystem as NOT valid
1062 _INLINE_ void ext2fs_unmark_valid(ext2_filsys fs)
1064 fs->flags &= ~EXT2_FLAG_VALID;
1068 * Check to see if a filesystem is valid
1070 _INLINE_ int ext2fs_test_valid(ext2_filsys fs)
1072 return (fs->flags & EXT2_FLAG_VALID);
1076 * Mark the inode bitmap as dirty
1078 _INLINE_ void ext2fs_mark_ib_dirty(ext2_filsys fs)
1080 fs->flags |= EXT2_FLAG_IB_DIRTY | EXT2_FLAG_CHANGED;
1084 * Mark the block bitmap as dirty
1086 _INLINE_ void ext2fs_mark_bb_dirty(ext2_filsys fs)
1088 fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_CHANGED;
1092 * Check to see if a filesystem's inode bitmap is dirty
1094 _INLINE_ int ext2fs_test_ib_dirty(ext2_filsys fs)
1096 return (fs->flags & EXT2_FLAG_IB_DIRTY);
1100 * Check to see if a filesystem's block bitmap is dirty
1102 _INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs)
1104 return (fs->flags & EXT2_FLAG_BB_DIRTY);
1108 * Return the group # of a block
1110 _INLINE_ int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk)
1112 return (blk - fs->super->s_first_data_block) /
1113 fs->super->s_blocks_per_group;
1117 * Return the group # of an inode number
1119 _INLINE_ int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino)
1121 return (ino - 1) / fs->super->s_inodes_per_group;
1124 _INLINE_ blk_t ext2fs_inode_data_blocks(ext2_filsys fs,
1125 struct ext2_inode *inode)
1127 return inode->i_blocks -
1128 (inode->i_file_acl ? fs->blocksize >> 9 : 0);
1137 #endif /* _EXT2FS_EXT2FS_H */