4 * Copyright (C) 1993, 1994, 1995, 1996 Theodore Ts'o.
7 * This file may be redistributed under the terms of the GNU Library
8 * General Public License, version 2.
12 #ifndef _EXT2FS_EXT2FS_H
13 #define _EXT2FS_EXT2FS_H
16 #define EXT2FS_ATTR(x) __attribute__(x)
18 #define EXT2FS_ATTR(x)
22 #ifdef __has_attribute
23 #if __has_attribute(__nonstring__)
24 #define __nonstring __attribute__((__nonstring__))
27 #endif /* __has_attribute(__nonstring__) */
30 #endif /* __has_attribute */
31 #endif /* __nonstring */
34 #define EXT2FS_NO_TDB_UNUSED
36 #define EXT2FS_NO_TDB_UNUSED EXT2FS_ATTR((unused))
44 * Non-GNU C compilers won't necessarily understand inline
46 #if (!defined(__GNUC__) && !defined(__WATCOMC__))
47 #define NO_INLINE_FUNCS
51 * Where the master copy of the superblock is located, and how big
52 * superblocks are supposed to be. We define SUPERBLOCK_SIZE because
53 * the size of the superblock structure is not necessarily trustworthy
54 * (some versions have the padding set up so that the superblock is
57 #define SUPERBLOCK_OFFSET 1024
58 #define SUPERBLOCK_SIZE 1024
60 #define UUID_STR_SIZE 37
63 * The last ext2fs revision level that this version of the library is
66 #define EXT2_LIB_CURRENT_REV EXT2_DYNAMIC_REV
68 #ifdef HAVE_SYS_TYPES_H
69 #include <sys/types.h>
78 #if EXT2_FLAT_INCLUDES
81 #include "ext3_extents.h"
83 #include <ext2fs/ext2_types.h>
84 #include <ext2fs/ext2_fs.h>
85 #include <ext2fs/ext3_extents.h>
86 #endif /* EXT2_FLAT_INCLUDES */
88 typedef __u32 __bitwise ext2_ino_t;
89 typedef __u32 __bitwise blk_t;
90 typedef __u64 __bitwise blk64_t;
91 typedef __u32 __bitwise dgrp_t;
92 typedef __s32 __bitwise ext2_off_t;
93 typedef __s64 __bitwise ext2_off64_t;
94 typedef __s64 __bitwise e2_blkcnt_t;
95 typedef __u32 __bitwise ext2_dirhash_t;
97 #if EXT2_FLAT_INCLUDES
100 #include "ext2_err.h"
101 #include "ext2_ext_attr.h"
103 #include <et/com_err.h>
104 #include <ext2fs/ext2_io.h>
105 #include <ext2fs/ext2_err.h>
106 #include <ext2fs/ext2_ext_attr.h>
112 * Portability help for Microsoft Visual C++
115 #define EXT2_QSORT_TYPE int __cdecl
117 #define EXT2_QSORT_TYPE int
120 typedef struct struct_ext2_filsys *ext2_filsys;
122 #define EXT2FS_MARK_ERROR 0
123 #define EXT2FS_UNMARK_ERROR 1
124 #define EXT2FS_TEST_ERROR 2
126 struct ext2fs_struct_generic_bitmap_base {
131 typedef struct ext2fs_struct_generic_bitmap_base *ext2fs_generic_bitmap;
132 typedef struct ext2fs_struct_generic_bitmap_base *ext2fs_inode_bitmap;
133 typedef struct ext2fs_struct_generic_bitmap_base *ext2fs_block_bitmap;
135 #define EXT2_FIRST_INODE(s) EXT2_FIRST_INO(s)
139 * Badblocks list definitions
142 typedef struct ext2_struct_u32_list *ext2_badblocks_list;
143 typedef struct ext2_struct_u32_iterate *ext2_badblocks_iterate;
145 typedef struct ext2_struct_u32_list *ext2_u32_list;
146 typedef struct ext2_struct_u32_iterate *ext2_u32_iterate;
149 typedef struct ext2_struct_u32_list *badblocks_list;
150 typedef struct ext2_struct_u32_iterate *badblocks_iterate;
152 #define BADBLOCKS_FLAG_DIRTY 1
155 * ext2_dblist structure and abstractions (see dblist.c)
157 struct ext2_db_entry2 {
160 e2_blkcnt_t blockcnt;
163 /* Ye Olde 32-bit version */
164 struct ext2_db_entry {
170 typedef struct ext2_struct_dblist *ext2_dblist;
172 #define DBLIST_ABORT 1
175 * ext2_fileio definitions
178 #define EXT2_FILE_WRITE 0x0001
179 #define EXT2_FILE_CREATE 0x0002
181 #define EXT2_FILE_MASK 0x00FF
183 #define EXT2_FILE_BUF_DIRTY 0x4000
184 #define EXT2_FILE_BUF_VALID 0x2000
186 typedef struct ext2_file *ext2_file_t;
188 #define EXT2_SEEK_SET 0
189 #define EXT2_SEEK_CUR 1
190 #define EXT2_SEEK_END 2
193 * Flags for the ext2_filsys structure and for ext2fs_open()
195 #define EXT2_FLAG_RW 0x01
196 #define EXT2_FLAG_CHANGED 0x02
197 #define EXT2_FLAG_DIRTY 0x04
198 #define EXT2_FLAG_VALID 0x08
199 #define EXT2_FLAG_IB_DIRTY 0x10
200 #define EXT2_FLAG_BB_DIRTY 0x20
201 #define EXT2_FLAG_SWAP_BYTES 0x40
202 #define EXT2_FLAG_SWAP_BYTES_READ 0x80
203 #define EXT2_FLAG_SWAP_BYTES_WRITE 0x100
204 #define EXT2_FLAG_MASTER_SB_ONLY 0x200
205 #define EXT2_FLAG_FORCE 0x400
206 #define EXT2_FLAG_SUPER_ONLY 0x800
207 #define EXT2_FLAG_JOURNAL_DEV_OK 0x1000
208 #define EXT2_FLAG_IMAGE_FILE 0x2000
209 #define EXT2_FLAG_EXCLUSIVE 0x4000
210 #define EXT2_FLAG_SOFTSUPP_FEATURES 0x8000
211 #define EXT2_FLAG_NOFREE_ON_ERROR 0x10000
212 #define EXT2_FLAG_64BITS 0x20000
213 #define EXT2_FLAG_PRINT_PROGRESS 0x40000
214 #define EXT2_FLAG_DIRECT_IO 0x80000
215 #define EXT2_FLAG_SKIP_MMP 0x100000
216 #define EXT2_FLAG_IGNORE_CSUM_ERRORS 0x200000
217 #define EXT2_FLAG_SHARE_DUP 0x400000
218 #define EXT2_FLAG_IGNORE_SB_ERRORS 0x800000
219 #define EXT2_FLAG_BBITMAP_TAIL_PROBLEM 0x1000000
220 #define EXT2_FLAG_IBITMAP_TAIL_PROBLEM 0x2000000
221 #define EXT2_FLAG_THREADS 0x4000000
222 #define EXT2_FLAG_IGNORE_SWAP_DIRENT 0x8000000
225 * Special flag in the ext2 inode i_flag field that means that this is
226 * a new inode. (So that ext2_write_inode() can clear extra fields.)
228 #define EXT2_NEW_INODE_FL 0x80000000
231 * Flags for mkjournal
233 #define EXT2_MKJOURNAL_V1_SUPER 0x0000001 /* create V1 superblock (deprecated) */
234 #define EXT2_MKJOURNAL_LAZYINIT 0x0000002 /* don't zero journal inode before use*/
235 #define EXT2_MKJOURNAL_NO_MNT_CHECK 0x0000004 /* don't check mount status */
238 * Normal journal area size to fast commit area size ratio. This is used to
239 * set default size of fast commit area.
241 #define EXT2_JOURNAL_TO_FC_BLKS_RATIO 64
243 struct blk_alloc_ctx;
244 struct opaque_ext2_group_desc;
246 struct struct_ext2_filsys {
251 struct ext2_super_block * super;
252 unsigned int blocksize;
254 dgrp_t group_desc_count;
255 unsigned long desc_blocks;
256 struct opaque_ext2_group_desc * group_desc;
257 unsigned int inode_blocks_per_group;
258 ext2fs_inode_bitmap inode_map;
259 ext2fs_block_bitmap block_map;
260 /* XXX FIXME-64: not 64-bit safe, but not used? */
261 errcode_t (*get_blocks)(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks);
262 errcode_t (*check_directory)(ext2_filsys fs, ext2_ino_t ino);
263 errcode_t (*write_bitmaps)(ext2_filsys fs);
264 errcode_t (*read_inode)(ext2_filsys fs, ext2_ino_t ino,
265 struct ext2_inode *inode);
266 errcode_t (*write_inode)(ext2_filsys fs, ext2_ino_t ino,
267 struct ext2_inode *inode);
268 ext2_badblocks_list badblocks;
270 __u32 stride; /* for mke2fs */
271 struct ext2_super_block * orig_super;
272 struct ext2_image_hdr * image_header;
275 int cluster_ratio_bits;
276 __u16 default_bitmap_type;
279 * Reserved for future expansion
284 * Reserved for the use of the calling application.
291 struct ext2_inode_cache *icache;
295 * More callback functions
297 errcode_t (*get_alloc_block)(ext2_filsys fs, blk64_t goal,
299 errcode_t (*get_alloc_block2)(ext2_filsys fs, blk64_t goal,
300 blk64_t *ret, struct blk_alloc_ctx *ctx);
301 void (*block_alloc_stats)(ext2_filsys fs, blk64_t blk, int inuse);
304 * Buffers for Multiple mount protection(MMP) block.
311 * Time at which e2fsck last updated the MMP block.
313 long mmp_last_written;
315 /* progress operation functions */
316 struct ext2fs_progress_ops *progress_ops;
318 /* Precomputed FS UUID checksum for seeding other checksums */
321 io_channel journal_io;
324 /* New block range allocation hooks */
325 errcode_t (*new_range)(ext2_filsys fs, int flags, blk64_t goal,
326 blk64_t len, blk64_t *pblk, blk64_t *plen);
327 void (*block_alloc_stats_range)(ext2_filsys fs, blk64_t blk, blk_t num,
330 /* hashmap for SHA of data blocks */
331 struct ext2fs_hashmap* block_sha_map;
333 const struct ext2fs_nls_table *encoding;
336 #if EXT2_FLAT_INCLUDES
337 #include "e2_bitops.h"
339 #include <ext2fs/bitops.h>
343 * 64-bit bitmap backend types
345 #define EXT2FS_BMAP64_BITARRAY 1
346 #define EXT2FS_BMAP64_RBTREE 2
347 #define EXT2FS_BMAP64_AUTODIR 3
350 * Return flags for the block iterator functions
352 #define BLOCK_CHANGED 1
353 #define BLOCK_ABORT 2
354 #define BLOCK_ERROR 4
355 #define BLOCK_INLINE_DATA_CHANGED 8
358 * Block iterate flags
360 * BLOCK_FLAG_APPEND, or BLOCK_FLAG_HOLE, indicates that the iterator
361 * function should be called on blocks where the block number is zero.
362 * This is used by ext2fs_expand_dir() to be able to add a new block
363 * to an inode. It can also be used for programs that want to be able
364 * to deal with files that contain "holes".
366 * BLOCK_FLAG_DEPTH_TRAVERSE indicates that the iterator function for
367 * the indirect, doubly indirect, etc. blocks should be called after
368 * all of the blocks contained in the indirect blocks are processed.
369 * This is useful if you are going to be deallocating blocks from an
372 * BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be
373 * called for data blocks only.
375 * BLOCK_FLAG_READ_ONLY is a promise by the caller that it will not
376 * modify returned block number.
378 * BLOCK_FLAG_NO_LARGE is for internal use only. It informs
379 * ext2fs_block_iterate2 that large files won't be accepted.
381 #define BLOCK_FLAG_APPEND 1
382 #define BLOCK_FLAG_HOLE 1
383 #define BLOCK_FLAG_DEPTH_TRAVERSE 2
384 #define BLOCK_FLAG_DATA_ONLY 4
385 #define BLOCK_FLAG_READ_ONLY 8
387 #define BLOCK_FLAG_NO_LARGE 0x1000
390 * Magic "block count" return values for the block iterator function.
392 #define BLOCK_COUNT_IND (-1)
393 #define BLOCK_COUNT_DIND (-2)
394 #define BLOCK_COUNT_TIND (-3)
395 #define BLOCK_COUNT_TRANSLATOR (-4)
397 #define BLOCK_ALLOC_UNKNOWN 0
398 #define BLOCK_ALLOC_DATA 1
399 #define BLOCK_ALLOC_METADATA 2
401 struct blk_alloc_ctx {
403 struct ext2_inode *inode;
410 * Flags for ext2fs_move_blocks
412 #define EXT2_BMOVE_GET_DBLIST 0x0001
413 #define EXT2_BMOVE_DEBUG 0x0002
417 * Generic (non-filesystem layout specific) extents structure
420 #define EXT2_EXTENT_FLAGS_LEAF 0x0001
421 #define EXT2_EXTENT_FLAGS_UNINIT 0x0002
422 #define EXT2_EXTENT_FLAGS_SECOND_VISIT 0x0004
424 struct ext2fs_extent {
425 blk64_t e_pblk; /* first physical block */
426 blk64_t e_lblk; /* first logical block extent covers */
427 __u32 e_len; /* number of blocks covered by extent */
428 __u32 e_flags; /* extent flags */
431 typedef struct ext2_extent_handle *ext2_extent_handle_t;
432 typedef struct ext2_extent_path *ext2_extent_path_t;
435 * Flags used by ext2fs_extent_get()
437 #define EXT2_EXTENT_CURRENT 0x0000
438 #define EXT2_EXTENT_MOVE_MASK 0x000F
439 #define EXT2_EXTENT_ROOT 0x0001
440 #define EXT2_EXTENT_LAST_LEAF 0x0002
441 #define EXT2_EXTENT_FIRST_SIB 0x0003
442 #define EXT2_EXTENT_LAST_SIB 0x0004
443 #define EXT2_EXTENT_NEXT_SIB 0x0005
444 #define EXT2_EXTENT_PREV_SIB 0x0006
445 #define EXT2_EXTENT_NEXT_LEAF 0x0007
446 #define EXT2_EXTENT_PREV_LEAF 0x0008
447 #define EXT2_EXTENT_NEXT 0x0009
448 #define EXT2_EXTENT_PREV 0x000A
449 #define EXT2_EXTENT_UP 0x000B
450 #define EXT2_EXTENT_DOWN 0x000C
451 #define EXT2_EXTENT_DOWN_AND_LAST 0x000D
454 * Flags used by ext2fs_extent_insert()
456 #define EXT2_EXTENT_INSERT_AFTER 0x0001 /* insert after handle loc'n */
457 #define EXT2_EXTENT_INSERT_NOSPLIT 0x0002 /* insert may not cause split */
460 * Flags used by ext2fs_extent_delete()
462 #define EXT2_EXTENT_DELETE_KEEP_EMPTY 0x001 /* keep node if last extent gone */
465 * Flags used by ext2fs_extent_set_bmap()
467 #define EXT2_EXTENT_SET_BMAP_UNINIT 0x0001
470 * Data structure returned by ext2fs_extent_get_info()
472 struct ext2_extent_info {
482 __u32 max_uninit_len;
486 * Flags for directory block reading and writing functions
488 #define EXT2_DIRBLOCK_V2_STRUCT 0x0001
491 * Return flags for the directory iterator functions
493 #define DIRENT_CHANGED 1
494 #define DIRENT_ABORT 2
495 #define DIRENT_ERROR 3
498 * Directory iterator flags
501 #define DIRENT_FLAG_INCLUDE_EMPTY 1
502 #define DIRENT_FLAG_INCLUDE_REMOVED 2
503 #define DIRENT_FLAG_INCLUDE_CSUM 4
504 #define DIRENT_FLAG_INCLUDE_INLINE_DATA 8
506 #define DIRENT_DOT_FILE 1
507 #define DIRENT_DOT_DOT_FILE 2
508 #define DIRENT_OTHER_FILE 3
509 #define DIRENT_DELETED_FILE 4
510 #define DIRENT_CHECKSUM 5
513 * Inode scan definitions
515 typedef struct ext2_struct_inode_scan *ext2_inode_scan;
520 #define EXT2_SF_CHK_BADBLOCKS 0x0001
521 #define EXT2_SF_BAD_INODE_BLK 0x0002
522 #define EXT2_SF_BAD_EXTRA_BYTES 0x0004
523 #define EXT2_SF_SKIP_MISSING_ITABLE 0x0008
524 #define EXT2_SF_DO_LAZY 0x0010
525 #define EXT2_SF_WARN_GARBAGE_INODES 0x0020
528 * ext2fs_check_if_mounted flags
530 #define EXT2_MF_MOUNTED 1
531 #define EXT2_MF_ISROOT 2
532 #define EXT2_MF_READONLY 4
533 #define EXT2_MF_SWAP 8
534 #define EXT2_MF_BUSY 16
535 #define EXT2_MF_EXTFS 32
538 * Ext2/linux mode flags. We define them here so that we don't need
539 * to depend on the OS's sys/stat.h, since we may be compiling on a
542 #define LINUX_S_IFMT 00170000
543 #define LINUX_S_IFSOCK 0140000
544 #define LINUX_S_IFLNK 0120000
545 #define LINUX_S_IFREG 0100000
546 #define LINUX_S_IFBLK 0060000
547 #define LINUX_S_IFDIR 0040000
548 #define LINUX_S_IFCHR 0020000
549 #define LINUX_S_IFIFO 0010000
550 #define LINUX_S_ISUID 0004000
551 #define LINUX_S_ISGID 0002000
552 #define LINUX_S_ISVTX 0001000
554 #define LINUX_S_IRWXU 00700
555 #define LINUX_S_IRUSR 00400
556 #define LINUX_S_IWUSR 00200
557 #define LINUX_S_IXUSR 00100
559 #define LINUX_S_IRWXG 00070
560 #define LINUX_S_IRGRP 00040
561 #define LINUX_S_IWGRP 00020
562 #define LINUX_S_IXGRP 00010
564 #define LINUX_S_IRWXO 00007
565 #define LINUX_S_IROTH 00004
566 #define LINUX_S_IWOTH 00002
567 #define LINUX_S_IXOTH 00001
569 #define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK)
570 #define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG)
571 #define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR)
572 #define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR)
573 #define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK)
574 #define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO)
575 #define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK)
578 * ext2 size of an inode
580 #define EXT2_I_SIZE(i) ((i)->i_size | ((__u64) (i)->i_size_high << 32))
583 * ext2_icount_t abstraction
585 #define EXT2_ICOUNT_OPT_INCREMENT 0x01
586 #define EXT2_ICOUNT_OPT_FULLMAP 0x02
588 typedef struct ext2_icount *ext2_icount_t;
591 * Flags for ext2fs_bmap
593 #define BMAP_ALLOC 0x0001
594 #define BMAP_SET 0x0002
595 #define BMAP_UNINIT 0x0004
596 #define BMAP_ZERO 0x0008
599 * Returned flags from ext2fs_bmap
601 #define BMAP_RET_UNINIT 0x0001
604 * Flags for ext2fs_read_inode2
606 #define READ_INODE_NOCSUM 0x0001
609 * Flags for ext2fs_write_inode2
611 #define WRITE_INODE_NOCSUM 0x0001
614 * Flags for imager.c functions
616 #define IMAGER_FLAG_INODEMAP 1
617 #define IMAGER_FLAG_SPARSEWRITE 2
620 * For checking structure magic numbers...
623 #define EXT2_CHECK_MAGIC(struct, code) \
624 if ((struct)->magic != (code)) return (code)
627 * Features supported by this version of the library
629 #define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\
630 EXT2_FEATURE_COMPAT_IMAGIC_INODES|\
631 EXT3_FEATURE_COMPAT_HAS_JOURNAL|\
632 EXT2_FEATURE_COMPAT_RESIZE_INODE|\
633 EXT2_FEATURE_COMPAT_DIR_INDEX|\
634 EXT2_FEATURE_COMPAT_EXT_ATTR|\
635 EXT4_FEATURE_COMPAT_SPARSE_SUPER2|\
636 EXT4_FEATURE_COMPAT_FAST_COMMIT|\
637 EXT4_FEATURE_COMPAT_STABLE_INODES|\
638 EXT4_FEATURE_COMPAT_ORPHAN_FILE)
641 #define EXT4_LIB_INCOMPAT_MMP EXT4_FEATURE_INCOMPAT_MMP
643 #define EXT4_LIB_INCOMPAT_MMP (0)
646 #define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\
647 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\
648 EXT2_FEATURE_INCOMPAT_META_BG|\
649 EXT3_FEATURE_INCOMPAT_RECOVER|\
650 EXT3_FEATURE_INCOMPAT_EXTENTS|\
651 EXT4_FEATURE_INCOMPAT_FLEX_BG|\
652 EXT4_FEATURE_INCOMPAT_EA_INODE|\
653 EXT4_LIB_INCOMPAT_MMP|\
654 EXT4_FEATURE_INCOMPAT_64BIT|\
655 EXT4_FEATURE_INCOMPAT_INLINE_DATA|\
656 EXT4_FEATURE_INCOMPAT_ENCRYPT|\
657 EXT4_FEATURE_INCOMPAT_CASEFOLD|\
658 EXT4_FEATURE_INCOMPAT_CSUM_SEED|\
659 EXT4_FEATURE_INCOMPAT_LARGEDIR)
661 #define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\
662 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|\
663 EXT2_FEATURE_RO_COMPAT_LARGE_FILE|\
664 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|\
665 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|\
666 EXT4_FEATURE_RO_COMPAT_GDT_CSUM|\
667 EXT4_FEATURE_RO_COMPAT_BIGALLOC|\
668 EXT4_FEATURE_RO_COMPAT_QUOTA|\
669 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM|\
670 EXT4_FEATURE_RO_COMPAT_READONLY |\
671 EXT4_FEATURE_RO_COMPAT_PROJECT |\
672 EXT4_FEATURE_RO_COMPAT_SHARED_BLOCKS |\
673 EXT4_FEATURE_RO_COMPAT_VERITY |\
674 EXT4_FEATURE_RO_COMPAT_ORPHAN_PRESENT)
677 * These features are only allowed if EXT2_FLAG_SOFTSUPP_FEATURES is passed
680 #define EXT2_LIB_SOFTSUPP_INCOMPAT (0)
681 #define EXT2_LIB_SOFTSUPP_RO_COMPAT (EXT4_FEATURE_RO_COMPAT_REPLICA)
684 /* Translate a block number to a cluster number */
685 #define EXT2FS_CLUSTER_RATIO(fs) (1 << (fs)->cluster_ratio_bits)
686 #define EXT2FS_CLUSTER_MASK(fs) (EXT2FS_CLUSTER_RATIO(fs) - 1)
687 #define EXT2FS_B2C(fs, blk) ((blk) >> (fs)->cluster_ratio_bits)
688 /* Translate a cluster number to a block number */
689 #define EXT2FS_C2B(fs, cluster) ((cluster) << (fs)->cluster_ratio_bits)
690 /* Translate # of blks to # of clusters */
691 #define EXT2FS_NUM_B2C(fs, blks) (((blks) + EXT2FS_CLUSTER_MASK(fs)) >> \
692 (fs)->cluster_ratio_bits)
694 #if defined(HAVE_FSTAT64) && !defined(__OSX_AVAILABLE_BUT_DEPRECATED)
695 typedef struct stat64 ext2fs_struct_stat;
697 typedef struct stat ext2fs_struct_stat;
701 * For ext2fs_close2() and ext2fs_flush2(), this flag allows you to
702 * avoid the fsync call.
704 #define EXT2_FLAG_FLUSH_NO_SYNC 1
707 * Modify and iterate extended attributes
709 struct ext2_xattr_handle;
710 #define XATTR_ABORT 1
711 #define XATTR_CHANGED 2
714 * flags for ext2fs_rw_bitmaps()
716 #define EXT2FS_BITMAPS_WRITE 0x0001
717 #define EXT2FS_BITMAPS_BLOCK 0x0002
718 #define EXT2FS_BITMAPS_INODE 0x0004
719 #define EXT2FS_BITMAPS_VALID_FLAGS 0x0007
722 * function prototypes
724 static inline int ext2fs_has_group_desc_csum(ext2_filsys fs)
726 return ext2fs_has_feature_metadata_csum(fs->super) ||
727 ext2fs_has_feature_gdt_csum(fs->super);
730 /* The LARGE_FILE feature should be set if we have stored files 2GB+ in size */
731 static inline int ext2fs_needs_large_file_feature(unsigned long long file_size)
733 return file_size >= 0x80000000ULL;
737 extern void ext2fs_clear_block_uninit(ext2_filsys fs, dgrp_t group);
738 extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode,
739 ext2fs_inode_bitmap map, ext2_ino_t *ret);
740 extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal,
741 ext2fs_block_bitmap map, blk_t *ret);
742 extern errcode_t ext2fs_new_block2(ext2_filsys fs, blk64_t goal,
743 ext2fs_block_bitmap map, blk64_t *ret);
744 extern errcode_t ext2fs_new_block3(ext2_filsys fs, blk64_t goal,
745 ext2fs_block_bitmap map, blk64_t *ret,
746 struct blk_alloc_ctx *ctx);
747 extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start,
748 blk_t finish, int num,
749 ext2fs_block_bitmap map,
751 extern errcode_t ext2fs_get_free_blocks2(ext2_filsys fs, blk64_t start,
752 blk64_t finish, int num,
753 ext2fs_block_bitmap map,
755 extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal,
756 char *block_buf, blk_t *ret);
757 extern errcode_t ext2fs_alloc_block2(ext2_filsys fs, blk64_t goal,
758 char *block_buf, blk64_t *ret);
759 extern errcode_t ext2fs_alloc_block3(ext2_filsys fs, blk64_t goal,
760 char *block_buf, blk64_t *ret,
761 struct blk_alloc_ctx *ctx);
763 extern void ext2fs_set_alloc_block_callback(ext2_filsys fs,
764 errcode_t (*func)(ext2_filsys fs,
767 errcode_t (**old)(ext2_filsys fs,
770 blk64_t ext2fs_find_inode_goal(ext2_filsys fs, ext2_ino_t ino,
771 struct ext2_inode *inode, blk64_t lblk);
772 extern void ext2fs_set_new_range_callback(ext2_filsys fs,
773 errcode_t (*func)(ext2_filsys fs, int flags, blk64_t goal,
774 blk64_t len, blk64_t *pblk, blk64_t *plen),
775 errcode_t (**old)(ext2_filsys fs, int flags, blk64_t goal,
776 blk64_t len, blk64_t *pblk, blk64_t *plen));
777 extern void ext2fs_set_block_alloc_stats_range_callback(ext2_filsys fs,
778 void (*func)(ext2_filsys fs, blk64_t blk,
779 blk_t num, int inuse),
780 void (**old)(ext2_filsys fs, blk64_t blk,
781 blk_t num, int inuse));
782 #define EXT2_NEWRANGE_FIXED_GOAL (0x1)
783 #define EXT2_NEWRANGE_MIN_LENGTH (0x2)
784 #define EXT2_NEWRANGE_ALL_FLAGS (0x3)
785 errcode_t ext2fs_new_range(ext2_filsys fs, int flags, blk64_t goal,
786 blk64_t len, ext2fs_block_bitmap map, blk64_t *pblk,
788 #define EXT2_ALLOCRANGE_FIXED_GOAL (0x1)
789 #define EXT2_ALLOCRANGE_ZERO_BLOCKS (0x2)
790 #define EXT2_ALLOCRANGE_ALL_FLAGS (0x3)
791 errcode_t ext2fs_alloc_range(ext2_filsys fs, int flags, blk64_t goal,
792 blk_t len, blk64_t *ret);
795 extern int ext2fs_reserve_super_and_bgd(ext2_filsys fs,
797 ext2fs_block_bitmap bmap);
798 extern void ext2fs_set_block_alloc_stats_callback(ext2_filsys fs,
799 void (*func)(ext2_filsys fs,
802 void (**old)(ext2_filsys fs,
807 void ext2fs_inode_alloc_stats(ext2_filsys fs, ext2_ino_t ino, int inuse);
808 void ext2fs_inode_alloc_stats2(ext2_filsys fs, ext2_ino_t ino,
809 int inuse, int isdir);
810 void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse);
811 void ext2fs_block_alloc_stats2(ext2_filsys fs, blk64_t blk, int inuse);
812 void ext2fs_block_alloc_stats_range(ext2_filsys fs, blk64_t blk,
813 blk_t num, int inuse);
816 extern errcode_t ext2fs_allocate_tables(ext2_filsys fs);
817 extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group,
818 ext2fs_block_bitmap bmap);
821 extern errcode_t ext2fs_u32_list_create(ext2_u32_list *ret, int size);
822 extern errcode_t ext2fs_u32_list_add(ext2_u32_list bb, __u32 blk);
823 extern int ext2fs_u32_list_find(ext2_u32_list bb, __u32 blk);
824 extern int ext2fs_u32_list_test(ext2_u32_list bb, blk_t blk);
825 extern errcode_t ext2fs_u32_list_iterate_begin(ext2_u32_list bb,
826 ext2_u32_iterate *ret);
827 extern int ext2fs_u32_list_iterate(ext2_u32_iterate iter, blk_t *blk);
828 extern void ext2fs_u32_list_iterate_end(ext2_u32_iterate iter);
829 extern errcode_t ext2fs_u32_copy(ext2_u32_list src, ext2_u32_list *dest);
830 extern int ext2fs_u32_list_equal(ext2_u32_list bb1, ext2_u32_list bb2);
832 extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret,
834 extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb,
836 extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb,
838 extern int ext2fs_u32_list_del(ext2_u32_list bb, __u32 blk);
839 extern void ext2fs_badblocks_list_del(ext2_u32_list bb, __u32 blk);
841 ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb,
842 ext2_badblocks_iterate *ret);
843 extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter,
845 extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter);
846 extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src,
847 ext2_badblocks_list *dest);
848 extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1,
849 ext2_badblocks_list bb2);
850 extern int ext2fs_u32_list_count(ext2_u32_list bb);
853 extern errcode_t badblocks_list_create(badblocks_list *ret, int size);
854 extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk);
855 extern int badblocks_list_test(badblocks_list bb, blk_t blk);
856 extern errcode_t badblocks_list_iterate_begin(badblocks_list bb,
857 badblocks_iterate *ret);
858 extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk);
859 extern void badblocks_list_iterate_end(badblocks_iterate iter);
860 extern void badblocks_list_free(badblocks_list bb);
863 extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs,
864 ext2_badblocks_list bb_list);
867 extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap);
868 extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap);
869 extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src,
870 ext2fs_generic_bitmap *dest);
871 extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs,
873 ext2fs_block_bitmap *ret);
874 extern errcode_t ext2fs_allocate_subcluster_bitmap(ext2_filsys fs,
876 ext2fs_block_bitmap *ret);
877 extern int ext2fs_get_bitmap_granularity(ext2fs_block_bitmap bitmap);
878 extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs,
880 ext2fs_inode_bitmap *ret);
881 extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap,
882 ext2_ino_t end, ext2_ino_t *oend);
883 extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap,
884 blk_t end, blk_t *oend);
885 extern errcode_t ext2fs_fudge_block_bitmap_end2(ext2fs_block_bitmap bitmap,
886 blk64_t end, blk64_t *oend);
887 extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap);
888 extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap);
889 extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end,
890 ext2fs_inode_bitmap bmap);
891 extern errcode_t ext2fs_resize_inode_bitmap2(__u64 new_end,
893 ext2fs_inode_bitmap bmap);
894 extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end,
895 ext2fs_block_bitmap bmap);
896 extern errcode_t ext2fs_resize_block_bitmap2(__u64 new_end,
898 ext2fs_block_bitmap bmap);
899 extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1,
900 ext2fs_block_bitmap bm2);
901 extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1,
902 ext2fs_inode_bitmap bm2);
903 extern errcode_t ext2fs_set_inode_bitmap_range(ext2fs_inode_bitmap bmap,
904 ext2_ino_t start, unsigned int num,
906 extern errcode_t ext2fs_set_inode_bitmap_range2(ext2fs_inode_bitmap bmap,
907 __u64 start, size_t num,
909 extern errcode_t ext2fs_get_inode_bitmap_range(ext2fs_inode_bitmap bmap,
910 ext2_ino_t start, unsigned int num,
912 extern errcode_t ext2fs_get_inode_bitmap_range2(ext2fs_inode_bitmap bmap,
913 __u64 start, size_t num,
915 extern errcode_t ext2fs_set_block_bitmap_range(ext2fs_block_bitmap bmap,
916 blk_t start, unsigned int num,
918 extern errcode_t ext2fs_set_block_bitmap_range2(ext2fs_block_bitmap bmap,
919 blk64_t start, size_t num,
921 extern errcode_t ext2fs_get_block_bitmap_range(ext2fs_block_bitmap bmap,
922 blk_t start, unsigned int num,
924 extern errcode_t ext2fs_get_block_bitmap_range2(ext2fs_block_bitmap bmap,
925 blk64_t start, size_t num,
929 extern __u32 ext2fs_inode_bitmap_checksum(ext2_filsys fs, dgrp_t group);
930 extern __u32 ext2fs_block_bitmap_checksum(ext2_filsys fs, dgrp_t group);
931 extern dgrp_t ext2fs_group_of_blk2(ext2_filsys fs, blk64_t);
932 extern blk64_t ext2fs_group_first_block2(ext2_filsys fs, dgrp_t group);
933 extern blk64_t ext2fs_group_last_block2(ext2_filsys fs, dgrp_t group);
934 extern int ext2fs_group_blocks_count(ext2_filsys fs, dgrp_t group);
935 extern blk64_t ext2fs_inode_data_blocks2(ext2_filsys fs,
936 struct ext2_inode *inode);
937 extern blk64_t ext2fs_inode_i_blocks(ext2_filsys fs,
938 struct ext2_inode *inode);
939 extern blk64_t ext2fs_get_stat_i_blocks(ext2_filsys fs,
940 struct ext2_inode *inode);
941 extern blk64_t ext2fs_blocks_count(struct ext2_super_block *super);
942 extern void ext2fs_blocks_count_set(struct ext2_super_block *super,
944 extern void ext2fs_blocks_count_add(struct ext2_super_block *super,
946 extern blk64_t ext2fs_r_blocks_count(struct ext2_super_block *super);
947 extern void ext2fs_r_blocks_count_set(struct ext2_super_block *super,
949 extern void ext2fs_r_blocks_count_add(struct ext2_super_block *super,
951 extern blk64_t ext2fs_free_blocks_count(struct ext2_super_block *super);
952 extern void ext2fs_free_blocks_count_set(struct ext2_super_block *super,
954 extern void ext2fs_free_blocks_count_add(struct ext2_super_block *super,
956 /* Block group descriptor accessor functions */
957 extern struct ext2_group_desc *ext2fs_group_desc(ext2_filsys fs,
958 struct opaque_ext2_group_desc *gdp,
960 extern blk64_t ext2fs_block_bitmap_csum(ext2_filsys fs, dgrp_t group);
961 extern blk64_t ext2fs_block_bitmap_loc(ext2_filsys fs, dgrp_t group);
962 extern void ext2fs_block_bitmap_loc_set(ext2_filsys fs, dgrp_t group,
964 extern __u32 ext2fs_inode_bitmap_csum(ext2_filsys fs, dgrp_t group);
965 extern blk64_t ext2fs_inode_bitmap_loc(ext2_filsys fs, dgrp_t group);
966 extern void ext2fs_inode_bitmap_loc_set(ext2_filsys fs, dgrp_t group,
968 extern blk64_t ext2fs_inode_table_loc(ext2_filsys fs, dgrp_t group);
969 extern void ext2fs_inode_table_loc_set(ext2_filsys fs, dgrp_t group,
971 extern __u32 ext2fs_bg_free_blocks_count(ext2_filsys fs, dgrp_t group);
972 extern void ext2fs_bg_free_blocks_count_set(ext2_filsys fs, dgrp_t group,
974 extern __u32 ext2fs_bg_free_inodes_count(ext2_filsys fs, dgrp_t group);
975 extern void ext2fs_bg_free_inodes_count_set(ext2_filsys fs, dgrp_t group,
977 extern __u32 ext2fs_bg_used_dirs_count(ext2_filsys fs, dgrp_t group);
978 extern void ext2fs_bg_used_dirs_count_set(ext2_filsys fs, dgrp_t group,
980 extern __u32 ext2fs_bg_itable_unused(ext2_filsys fs, dgrp_t group);
981 extern void ext2fs_bg_itable_unused_set(ext2_filsys fs, dgrp_t group,
983 extern __u16 ext2fs_bg_flags(ext2_filsys fs, dgrp_t group);
984 extern void ext2fs_bg_flags_zap(ext2_filsys fs, dgrp_t group);
985 extern int ext2fs_bg_flags_test(ext2_filsys fs, dgrp_t group, __u16 bg_flag);
986 extern void ext2fs_bg_flags_set(ext2_filsys fs, dgrp_t group, __u16 bg_flags);
987 extern void ext2fs_bg_flags_clear(ext2_filsys fs, dgrp_t group, __u16 bg_flags);
988 extern __u16 ext2fs_bg_checksum(ext2_filsys fs, dgrp_t group);
989 extern void ext2fs_bg_checksum_set(ext2_filsys fs, dgrp_t group, __u16 checksum);
990 extern blk64_t ext2fs_file_acl_block(ext2_filsys fs,
991 const struct ext2_inode *inode);
992 extern void ext2fs_file_acl_block_set(ext2_filsys fs,
993 struct ext2_inode *inode, blk64_t blk);
994 extern errcode_t ext2fs_inode_size_set(ext2_filsys fs, struct ext2_inode *inode,
998 extern errcode_t ext2fs_block_iterate(ext2_filsys fs,
1002 int (*func)(ext2_filsys fs,
1007 errcode_t ext2fs_block_iterate2(ext2_filsys fs,
1011 int (*func)(ext2_filsys fs,
1013 e2_blkcnt_t blockcnt,
1018 errcode_t ext2fs_block_iterate3(ext2_filsys fs,
1022 int (*func)(ext2_filsys fs,
1024 e2_blkcnt_t blockcnt,
1031 extern errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino,
1032 struct ext2_inode *inode,
1033 char *block_buf, int bmap_flags,
1034 blk_t block, blk_t *phys_blk);
1035 extern errcode_t ext2fs_bmap2(ext2_filsys fs, ext2_ino_t ino,
1036 struct ext2_inode *inode,
1037 char *block_buf, int bmap_flags, blk64_t block,
1038 int *ret_flags, blk64_t *phys_blk);
1039 errcode_t ext2fs_map_cluster_block(ext2_filsys fs, ext2_ino_t ino,
1040 struct ext2_inode *inode, blk64_t lblk,
1045 extern errcode_t ext2fs_move_blocks(ext2_filsys fs,
1046 ext2fs_block_bitmap reserve,
1047 ext2fs_block_bitmap alloc_map,
1052 extern errcode_t ext2fs_check_desc(ext2_filsys fs);
1055 extern errcode_t ext2fs_close(ext2_filsys fs);
1056 extern errcode_t ext2fs_close2(ext2_filsys fs, int flags);
1057 extern errcode_t ext2fs_close_free(ext2_filsys *fs);
1058 extern errcode_t ext2fs_flush(ext2_filsys fs);
1059 extern errcode_t ext2fs_flush2(ext2_filsys fs, int flags);
1060 extern int ext2fs_bg_has_super(ext2_filsys fs, dgrp_t group_block);
1061 extern errcode_t ext2fs_super_and_bgd_loc2(ext2_filsys fs,
1063 blk64_t *ret_super_blk,
1064 blk64_t *ret_old_desc_blk,
1065 blk64_t *ret_new_desc_blk,
1066 blk_t *ret_used_blks);
1067 extern int ext2fs_super_and_bgd_loc(ext2_filsys fs,
1069 blk_t *ret_super_blk,
1070 blk_t *ret_old_desc_blk,
1071 blk_t *ret_new_desc_blk,
1073 extern void ext2fs_update_dynamic_rev(ext2_filsys fs);
1076 extern __u32 ext2fs_crc32_be(__u32 crc, unsigned char const *p, size_t len);
1077 extern __u32 ext2fs_crc32c_le(__u32 crc, unsigned char const *p, size_t len);
1080 extern void ext2fs_init_csum_seed(ext2_filsys fs);
1081 extern errcode_t ext2fs_mmp_csum_set(ext2_filsys fs, struct mmp_struct *mmp);
1082 extern int ext2fs_mmp_csum_verify(ext2_filsys, struct mmp_struct *mmp);
1083 extern int ext2fs_verify_csum_type(ext2_filsys fs, struct ext2_super_block *sb);
1084 extern errcode_t ext2fs_superblock_csum_set(ext2_filsys fs,
1085 struct ext2_super_block *sb);
1086 extern int ext2fs_superblock_csum_verify(ext2_filsys fs,
1087 struct ext2_super_block *sb);
1088 extern errcode_t ext2fs_ext_attr_block_csum_set(ext2_filsys fs,
1089 ext2_ino_t inum, blk64_t block,
1090 struct ext2_ext_attr_header *hdr);
1091 extern int ext2fs_ext_attr_block_csum_verify(ext2_filsys fs, ext2_ino_t inum,
1093 struct ext2_ext_attr_header *hdr);
1094 #define EXT2_DIRENT_TAIL(block, blocksize) \
1095 ((struct ext2_dir_entry_tail *)(((char *)(block)) + \
1096 (blocksize) - sizeof(struct ext2_dir_entry_tail)))
1098 extern void ext2fs_initialize_dirent_tail(ext2_filsys fs,
1099 struct ext2_dir_entry_tail *t);
1100 extern int ext2fs_dirent_has_tail(ext2_filsys fs,
1101 struct ext2_dir_entry *dirent);
1102 extern int ext2fs_dirent_csum_verify(ext2_filsys fs, ext2_ino_t inum,
1103 struct ext2_dir_entry *dirent);
1104 extern int ext2fs_dir_block_csum_verify(ext2_filsys fs, ext2_ino_t inum,
1105 struct ext2_dir_entry *dirent);
1106 extern errcode_t ext2fs_dir_block_csum_set(ext2_filsys fs, ext2_ino_t inum,
1107 struct ext2_dir_entry *dirent);
1108 extern errcode_t ext2fs_get_dx_countlimit(ext2_filsys fs,
1109 struct ext2_dir_entry *dirent,
1110 struct ext2_dx_countlimit **cc,
1112 extern errcode_t ext2fs_dx_csum(ext2_filsys fs, ext2_ino_t inum,
1113 struct ext2_dir_entry *dirent,
1114 __u32 *crc, struct ext2_dx_tail **ret_t);
1115 extern errcode_t ext2fs_extent_block_csum_set(ext2_filsys fs,
1117 struct ext3_extent_header *eh);
1118 extern int ext2fs_extent_block_csum_verify(ext2_filsys fs,
1120 struct ext3_extent_header *eh);
1121 extern errcode_t ext2fs_block_bitmap_csum_set(ext2_filsys fs, dgrp_t group,
1122 char *bitmap, int size);
1123 extern int ext2fs_block_bitmap_csum_verify(ext2_filsys fs, dgrp_t group,
1124 char *bitmap, int size);
1125 extern errcode_t ext2fs_inode_bitmap_csum_set(ext2_filsys fs, dgrp_t group,
1126 char *bitmap, int size);
1127 extern int ext2fs_inode_bitmap_csum_verify(ext2_filsys fs, dgrp_t group,
1128 char *bitmap, int size);
1129 extern errcode_t ext2fs_inode_csum_set(ext2_filsys fs, ext2_ino_t inum,
1130 struct ext2_inode_large *inode);
1131 extern int ext2fs_inode_csum_verify(ext2_filsys fs, ext2_ino_t inum,
1132 struct ext2_inode_large *inode);
1133 extern void ext2fs_group_desc_csum_set(ext2_filsys fs, dgrp_t group);
1134 extern int ext2fs_group_desc_csum_verify(ext2_filsys fs, dgrp_t group);
1135 extern errcode_t ext2fs_set_gdt_csum(ext2_filsys fs);
1136 extern __u16 ext2fs_group_desc_csum(ext2_filsys fs, dgrp_t group);
1139 extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist);
1140 extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ext2_ino_t ino,
1141 blk_t blk, int blockcnt);
1142 extern errcode_t ext2fs_add_dir_block2(ext2_dblist dblist, ext2_ino_t ino,
1143 blk64_t blk, e2_blkcnt_t blockcnt);
1144 extern void ext2fs_dblist_sort(ext2_dblist dblist,
1145 EXT2_QSORT_TYPE (*sortfunc)(const void *,
1147 extern void ext2fs_dblist_sort2(ext2_dblist dblist,
1148 EXT2_QSORT_TYPE (*sortfunc)(const void *,
1150 extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist,
1151 int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info,
1154 extern errcode_t ext2fs_dblist_iterate2(ext2_dblist dblist,
1155 int (*func)(ext2_filsys fs, struct ext2_db_entry2 *db_info,
1158 extern errcode_t ext2fs_dblist_iterate3(ext2_dblist dblist,
1159 int (*func)(ext2_filsys fs, struct ext2_db_entry2 *db_info,
1161 unsigned long long start,
1162 unsigned long long count,
1164 extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ext2_ino_t ino,
1165 blk_t blk, int blockcnt);
1166 extern errcode_t ext2fs_set_dir_block2(ext2_dblist dblist, ext2_ino_t ino,
1167 blk64_t blk, e2_blkcnt_t blockcnt);
1168 extern errcode_t ext2fs_copy_dblist(ext2_dblist src,
1170 extern int ext2fs_dblist_count(ext2_dblist dblist);
1171 extern blk64_t ext2fs_dblist_count2(ext2_dblist dblist);
1172 extern errcode_t ext2fs_dblist_get_last(ext2_dblist dblist,
1173 struct ext2_db_entry **entry);
1174 extern errcode_t ext2fs_dblist_get_last2(ext2_dblist dblist,
1175 struct ext2_db_entry2 **entry);
1176 extern errcode_t ext2fs_dblist_drop_last(ext2_dblist dblist);
1180 ext2fs_dblist_dir_iterate(ext2_dblist dblist,
1183 int (*func)(ext2_ino_t dir,
1185 struct ext2_dir_entry *dirent,
1193 /* digest_encode.c */
1194 #define EXT2FS_DIGEST_SIZE EXT2FS_SHA256_LENGTH
1195 extern int ext2fs_digest_encode(const char *src, int len, char *dst);
1196 extern int ext2fs_digest_decode(const char *src, int len, char *dst);
1200 extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block,
1202 extern errcode_t ext2fs_read_dir_block2(ext2_filsys fs, blk_t block,
1203 void *buf, int flags);
1204 extern errcode_t ext2fs_read_dir_block3(ext2_filsys fs, blk64_t block,
1205 void *buf, int flags);
1206 extern errcode_t ext2fs_read_dir_block4(ext2_filsys fs, blk64_t block,
1207 void *buf, int flags, ext2_ino_t ino);
1208 extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block,
1210 extern errcode_t ext2fs_write_dir_block2(ext2_filsys fs, blk_t block,
1211 void *buf, int flags);
1212 extern errcode_t ext2fs_write_dir_block3(ext2_filsys fs, blk64_t block,
1213 void *buf, int flags);
1214 extern errcode_t ext2fs_write_dir_block4(ext2_filsys fs, blk64_t block,
1215 void *buf, int flags, ext2_ino_t ino);
1218 extern errcode_t ext2fs_dirhash(int version, const char *name, int len,
1220 ext2_dirhash_t *ret_hash,
1221 ext2_dirhash_t *ret_minor_hash);
1223 extern errcode_t ext2fs_dirhash2(int version, const char *name, int len,
1224 const struct ext2fs_nls_table *charset,
1227 ext2_dirhash_t *ret_hash,
1228 ext2_dirhash_t *ret_minor_hash);
1231 extern errcode_t ext2fs_get_rec_len(ext2_filsys fs,
1232 struct ext2_dir_entry *dirent,
1233 unsigned int *rec_len);
1234 extern errcode_t ext2fs_set_rec_len(ext2_filsys fs,
1236 struct ext2_dir_entry *dirent);
1237 extern errcode_t ext2fs_dir_iterate(ext2_filsys fs,
1241 int (*func)(struct ext2_dir_entry *dirent,
1247 extern errcode_t ext2fs_dir_iterate2(ext2_filsys fs,
1251 int (*func)(ext2_ino_t dir,
1253 struct ext2_dir_entry *dirent,
1261 extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest);
1264 extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir);
1267 extern __u32 ext2fs_ext_attr_hash_entry(struct ext2_ext_attr_entry *entry,
1269 extern __u32 ext2fs_ext_attr_hash_entry_signed(struct ext2_ext_attr_entry *entry,
1271 extern errcode_t ext2fs_ext_attr_hash_entry2(ext2_filsys fs,
1272 struct ext2_ext_attr_entry *entry,
1273 void *data, __u32 *hash);
1274 extern errcode_t ext2fs_ext_attr_hash_entry3(ext2_filsys fs,
1275 struct ext2_ext_attr_entry *entry,
1276 void *data, __u32 *hash,
1277 __u32 *signed_hash);
1278 extern errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf);
1279 extern errcode_t ext2fs_read_ext_attr2(ext2_filsys fs, blk64_t block,
1281 extern errcode_t ext2fs_read_ext_attr3(ext2_filsys fs, blk64_t block,
1282 void *buf, ext2_ino_t inum);
1283 extern errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block,
1285 extern errcode_t ext2fs_write_ext_attr2(ext2_filsys fs, blk64_t block,
1287 extern errcode_t ext2fs_write_ext_attr3(ext2_filsys fs, blk64_t block,
1288 void *buf, ext2_ino_t inum);
1289 extern errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk,
1291 int adjust, __u32 *newcount);
1292 extern errcode_t ext2fs_adjust_ea_refcount2(ext2_filsys fs, blk64_t blk,
1294 int adjust, __u32 *newcount);
1295 extern errcode_t ext2fs_adjust_ea_refcount3(ext2_filsys fs, blk64_t blk,
1297 int adjust, __u32 *newcount,
1299 errcode_t ext2fs_xattrs_write(struct ext2_xattr_handle *handle);
1300 errcode_t ext2fs_xattrs_read(struct ext2_xattr_handle *handle);
1301 errcode_t ext2fs_xattrs_read_inode(struct ext2_xattr_handle *handle,
1302 struct ext2_inode_large *inode);
1303 errcode_t ext2fs_xattrs_iterate(struct ext2_xattr_handle *h,
1304 int (*func)(char *name, char *value,
1305 size_t value_len, void *data),
1307 errcode_t ext2fs_xattr_get(struct ext2_xattr_handle *h, const char *key,
1308 void **value, size_t *value_len);
1309 errcode_t ext2fs_xattr_set(struct ext2_xattr_handle *handle,
1313 errcode_t ext2fs_xattr_remove(struct ext2_xattr_handle *handle,
1315 errcode_t ext2fs_xattrs_open(ext2_filsys fs, ext2_ino_t ino,
1316 struct ext2_xattr_handle **handle);
1317 errcode_t ext2fs_xattrs_close(struct ext2_xattr_handle **handle);
1318 errcode_t ext2fs_free_ext_attr(ext2_filsys fs, ext2_ino_t ino,
1319 struct ext2_inode_large *inode);
1320 errcode_t ext2fs_xattrs_count(struct ext2_xattr_handle *handle, size_t *count);
1321 errcode_t ext2fs_xattr_inode_max_size(ext2_filsys fs, ext2_ino_t ino,
1323 #define XATTR_HANDLE_FLAG_RAW 0x0001
1324 errcode_t ext2fs_xattrs_flags(struct ext2_xattr_handle *handle,
1325 unsigned int *new_flags, unsigned int *old_flags);
1326 extern void ext2fs_ext_attr_block_rehash(struct ext2_ext_attr_header *header,
1327 struct ext2_ext_attr_entry *end);
1328 extern __u32 ext2fs_get_ea_inode_hash(struct ext2_inode *inode);
1329 extern void ext2fs_set_ea_inode_hash(struct ext2_inode *inode, __u32 hash);
1330 extern __u64 ext2fs_get_ea_inode_ref(struct ext2_inode *inode);
1331 extern void ext2fs_set_ea_inode_ref(struct ext2_inode *inode, __u64 ref_count);
1334 extern errcode_t ext2fs_extent_header_verify(void *ptr, int size);
1335 extern errcode_t ext2fs_extent_open(ext2_filsys fs, ext2_ino_t ino,
1336 ext2_extent_handle_t *handle);
1337 extern errcode_t ext2fs_extent_open2(ext2_filsys fs, ext2_ino_t ino,
1338 struct ext2_inode *inode,
1339 ext2_extent_handle_t *ret_handle);
1340 extern void ext2fs_extent_free(ext2_extent_handle_t handle);
1341 extern errcode_t ext2fs_extent_get(ext2_extent_handle_t handle,
1342 int flags, struct ext2fs_extent *extent);
1343 extern errcode_t ext2fs_extent_node_split(ext2_extent_handle_t handle);
1344 extern errcode_t ext2fs_extent_replace(ext2_extent_handle_t handle, int flags,
1345 struct ext2fs_extent *extent);
1346 extern errcode_t ext2fs_extent_insert(ext2_extent_handle_t handle, int flags,
1347 struct ext2fs_extent *extent);
1348 extern errcode_t ext2fs_extent_set_bmap(ext2_extent_handle_t handle,
1349 blk64_t logical, blk64_t physical,
1351 extern errcode_t ext2fs_extent_delete(ext2_extent_handle_t handle, int flags);
1352 extern errcode_t ext2fs_extent_get_info(ext2_extent_handle_t handle,
1353 struct ext2_extent_info *info);
1354 extern errcode_t ext2fs_extent_goto(ext2_extent_handle_t handle,
1356 extern errcode_t ext2fs_extent_goto2(ext2_extent_handle_t handle,
1357 int leaf_level, blk64_t blk);
1358 extern errcode_t ext2fs_extent_fix_parents(ext2_extent_handle_t handle);
1359 extern size_t ext2fs_max_extent_depth(ext2_extent_handle_t handle);
1360 extern errcode_t ext2fs_fix_extents_checksums(ext2_filsys fs, ext2_ino_t ino,
1361 struct ext2_inode *inode);
1362 extern errcode_t ext2fs_count_blocks(ext2_filsys fs, ext2_ino_t ino,
1363 struct ext2_inode *inode, blk64_t *ret_count);
1364 extern errcode_t ext2fs_decode_extent(struct ext2fs_extent *to, void *from,
1368 #define EXT2_FALLOCATE_ZERO_BLOCKS (0x1)
1369 #define EXT2_FALLOCATE_FORCE_INIT (0x2)
1370 #define EXT2_FALLOCATE_FORCE_UNINIT (0x4)
1371 #define EXT2_FALLOCATE_INIT_BEYOND_EOF (0x8)
1372 #define EXT2_FALLOCATE_ALL_FLAGS (0xF)
1373 errcode_t ext2fs_fallocate(ext2_filsys fs, int flags, ext2_ino_t ino,
1374 struct ext2_inode *inode, blk64_t goal,
1375 blk64_t start, blk64_t len);
1378 extern errcode_t ext2fs_file_open2(ext2_filsys fs, ext2_ino_t ino,
1379 struct ext2_inode *inode,
1380 int flags, ext2_file_t *ret);
1381 extern errcode_t ext2fs_file_open(ext2_filsys fs, ext2_ino_t ino,
1382 int flags, ext2_file_t *ret);
1383 extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file);
1384 struct ext2_inode *ext2fs_file_get_inode(ext2_file_t file);
1385 extern ext2_ino_t ext2fs_file_get_inode_num(ext2_file_t file);
1386 extern errcode_t ext2fs_file_close(ext2_file_t file);
1387 extern errcode_t ext2fs_file_flush(ext2_file_t file);
1388 extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf,
1389 unsigned int wanted, unsigned int *got);
1390 extern errcode_t ext2fs_file_write(ext2_file_t file, const void *buf,
1391 unsigned int nbytes, unsigned int *written);
1392 extern errcode_t ext2fs_file_llseek(ext2_file_t file, __u64 offset,
1393 int whence, __u64 *ret_pos);
1394 extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset,
1395 int whence, ext2_off_t *ret_pos);
1396 errcode_t ext2fs_file_get_lsize(ext2_file_t file, __u64 *ret_size);
1397 extern ext2_off_t ext2fs_file_get_size(ext2_file_t file);
1398 extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size);
1399 extern errcode_t ext2fs_file_set_size2(ext2_file_t file, ext2_off64_t size);
1402 extern char *ext2fs_find_block_device(dev_t device);
1405 extern errcode_t ext2fs_sync_device(int fd, int flushb);
1408 extern void ext2fs_free(ext2_filsys fs);
1409 extern void ext2fs_free_dblist(ext2_dblist dblist);
1410 extern void ext2fs_badblocks_list_free(ext2_badblocks_list bb);
1411 extern void ext2fs_u32_list_free(ext2_u32_list bb);
1414 extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap);
1415 extern errcode_t ext2fs_make_generic_bitmap(errcode_t magic, ext2_filsys fs,
1416 __u32 start, __u32 end,
1418 const char *descr, char *init_map,
1419 ext2fs_generic_bitmap *ret);
1420 extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start,
1424 ext2fs_generic_bitmap *ret);
1425 extern errcode_t ext2fs_copy_generic_bitmap(ext2fs_generic_bitmap src,
1426 ext2fs_generic_bitmap *dest);
1427 extern void ext2fs_clear_generic_bitmap(ext2fs_generic_bitmap bitmap);
1428 extern errcode_t ext2fs_fudge_generic_bitmap_end(ext2fs_inode_bitmap bitmap,
1433 extern void ext2fs_set_generic_bitmap_padding(ext2fs_generic_bitmap map);
1434 extern errcode_t ext2fs_resize_generic_bitmap(errcode_t magic,
1437 ext2fs_generic_bitmap bmap);
1438 extern errcode_t ext2fs_compare_generic_bitmap(errcode_t magic, errcode_t neq,
1439 ext2fs_generic_bitmap bm1,
1440 ext2fs_generic_bitmap bm2);
1441 extern errcode_t ext2fs_get_generic_bitmap_range(ext2fs_generic_bitmap bmap,
1443 __u32 start, __u32 num,
1445 extern errcode_t ext2fs_set_generic_bitmap_range(ext2fs_generic_bitmap bmap,
1447 __u32 start, __u32 num,
1449 extern errcode_t ext2fs_find_first_zero_generic_bitmap(ext2fs_generic_bitmap bitmap,
1450 __u32 start, __u32 end,
1452 extern errcode_t ext2fs_find_first_set_generic_bitmap(ext2fs_generic_bitmap bitmap,
1453 __u32 start, __u32 end,
1456 /* gen_bitmap64.c */
1457 void ext2fs_free_generic_bmap(ext2fs_generic_bitmap bmap);
1458 errcode_t ext2fs_alloc_generic_bmap(ext2_filsys fs, errcode_t magic,
1459 int type, __u64 start, __u64 end,
1462 ext2fs_generic_bitmap *ret);
1463 errcode_t ext2fs_copy_generic_bmap(ext2fs_generic_bitmap src,
1464 ext2fs_generic_bitmap *dest);
1465 void ext2fs_clear_generic_bmap(ext2fs_generic_bitmap bitmap);
1466 errcode_t ext2fs_fudge_generic_bmap_end(ext2fs_generic_bitmap bitmap,
1468 __u64 end, __u64 *oend);
1469 void ext2fs_set_generic_bmap_padding(ext2fs_generic_bitmap bmap);
1470 errcode_t ext2fs_resize_generic_bmap(ext2fs_generic_bitmap bmap,
1472 __u64 new_real_end);
1473 errcode_t ext2fs_compare_generic_bmap(errcode_t neq,
1474 ext2fs_generic_bitmap bm1,
1475 ext2fs_generic_bitmap bm2);
1476 errcode_t ext2fs_get_generic_bmap_range(ext2fs_generic_bitmap bmap,
1477 __u64 start, unsigned int num,
1479 errcode_t ext2fs_set_generic_bmap_range(ext2fs_generic_bitmap bmap,
1480 __u64 start, unsigned int num,
1482 errcode_t ext2fs_convert_subcluster_bitmap(ext2_filsys fs,
1483 ext2fs_block_bitmap *bitmap);
1484 errcode_t ext2fs_count_used_clusters(ext2_filsys fs, blk64_t start,
1485 blk64_t end, blk64_t *out);
1487 /* get_num_dirs.c */
1488 extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs);
1491 extern errcode_t ext2fs_get_device_size(const char *file, int blocksize,
1493 extern errcode_t ext2fs_get_device_size2(const char *file, int blocksize,
1494 blk64_t *retblocks);
1497 extern int ext2fs_get_dio_alignment(int fd);
1498 errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize);
1499 errcode_t ext2fs_get_device_phys_sectsize(const char *file, int *sectsize);
1502 errcode_t ext2fs_iblk_add_blocks(ext2_filsys fs, struct ext2_inode *inode,
1503 blk64_t num_blocks);
1504 errcode_t ext2fs_iblk_sub_blocks(ext2_filsys fs, struct ext2_inode *inode,
1505 blk64_t num_blocks);
1506 errcode_t ext2fs_iblk_set(ext2_filsys fs, struct ext2_inode *inode, blk64_t b);
1509 extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags);
1510 extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags);
1511 extern errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd, int flags);
1512 extern errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd, int flags);
1513 extern errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags);
1514 extern errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags);
1517 errcode_t ext2fs_read_ind_block(ext2_filsys fs, blk_t blk, void *buf);
1518 errcode_t ext2fs_write_ind_block(ext2_filsys fs, blk_t blk, void *buf);
1521 extern errcode_t ext2fs_initialize(const char *name, int flags,
1522 struct ext2_super_block *param,
1523 io_manager manager, ext2_filsys *ret_fs);
1524 extern errcode_t ext2fs_calculate_summary_stats(ext2_filsys fs, int super_only);
1527 extern void ext2fs_free_icount(ext2_icount_t icount);
1528 extern errcode_t ext2fs_create_icount_tdb(ext2_filsys fs, char *tdb_dir,
1529 int flags, ext2_icount_t *ret);
1530 extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags,
1532 ext2_icount_t hint, ext2_icount_t *ret);
1533 extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags,
1535 ext2_icount_t *ret);
1536 extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ext2_ino_t ino,
1538 extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ext2_ino_t ino,
1540 extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ext2_ino_t ino,
1542 extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ext2_ino_t ino,
1544 extern ext2_ino_t ext2fs_get_icount_size(ext2_icount_t icount);
1545 errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *);
1549 extern errcode_t ext2fs_get_memalign(unsigned long size,
1550 unsigned long align, void *ptr);
1553 extern errcode_t ext2fs_inline_data_init(ext2_filsys fs, ext2_ino_t ino);
1554 extern errcode_t ext2fs_inline_data_size(ext2_filsys fs, ext2_ino_t ino,
1556 extern errcode_t ext2fs_inline_data_get(ext2_filsys fs, ext2_ino_t ino,
1557 struct ext2_inode *inode,
1558 void *buf, size_t *size);
1559 extern errcode_t ext2fs_inline_data_set(ext2_filsys fs, ext2_ino_t ino,
1560 struct ext2_inode *inode,
1561 void *buf, size_t size);
1564 extern errcode_t ext2fs_create_inode_cache(ext2_filsys fs,
1565 unsigned int cache_size);
1566 extern void ext2fs_free_inode_cache(struct ext2_inode_cache *icache);
1567 extern errcode_t ext2fs_flush_icache(ext2_filsys fs);
1568 extern errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan,
1570 struct ext2_inode *inode,
1572 #define EXT2_INODE_SCAN_DEFAULT_BUFFER_BLOCKS 8
1573 extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks,
1574 ext2_inode_scan *ret_scan);
1575 extern void ext2fs_close_inode_scan(ext2_inode_scan scan);
1576 extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino,
1577 struct ext2_inode *inode);
1578 extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan,
1580 extern void ext2fs_set_inode_callback
1581 (ext2_inode_scan scan,
1582 errcode_t (*done_group)(ext2_filsys fs,
1583 ext2_inode_scan scan,
1586 void *done_group_data);
1587 extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags,
1589 extern errcode_t ext2fs_read_inode_full(ext2_filsys fs, ext2_ino_t ino,
1590 struct ext2_inode * inode,
1592 extern errcode_t ext2fs_read_inode(ext2_filsys fs, ext2_ino_t ino,
1593 struct ext2_inode * inode);
1594 extern errcode_t ext2fs_read_inode2(ext2_filsys fs, ext2_ino_t ino,
1595 struct ext2_inode * inode,
1596 int bufsize, int flags);
1597 extern errcode_t ext2fs_write_inode_full(ext2_filsys fs, ext2_ino_t ino,
1598 struct ext2_inode * inode,
1600 extern errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino,
1601 struct ext2_inode * inode);
1602 extern errcode_t ext2fs_write_inode2(ext2_filsys fs, ext2_ino_t ino,
1603 struct ext2_inode * inode,
1604 int bufsize, int flags);
1605 extern errcode_t ext2fs_write_new_inode(ext2_filsys fs, ext2_ino_t ino,
1606 struct ext2_inode * inode);
1607 extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks);
1608 extern errcode_t ext2fs_check_directory(ext2_filsys fs, ext2_ino_t ino);
1611 extern io_manager inode_io_manager;
1612 extern errcode_t ext2fs_inode_io_intern(ext2_filsys fs, ext2_ino_t ino,
1614 extern errcode_t ext2fs_inode_io_intern2(ext2_filsys fs, ext2_ino_t ino,
1615 struct ext2_inode *inode,
1619 extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags);
1620 extern errcode_t ext2fs_check_mount_point(const char *device, int *mount_flags,
1621 char *mtpt, int mtlen);
1625 * NOTE: This function removes from an inode the blocks "start", "end", and
1626 * every block in between.
1628 extern errcode_t ext2fs_punch(ext2_filsys fs, ext2_ino_t ino,
1629 struct ext2_inode *inode,
1630 char *block_buf, blk64_t start,
1634 extern errcode_t ext2fs_lookup(ext2_filsys fs, ext2_ino_t dir, const char *name,
1635 int namelen, char *buf, ext2_ino_t *inode);
1636 extern errcode_t ext2fs_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
1637 const char *name, ext2_ino_t *inode);
1638 errcode_t ext2fs_namei_follow(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
1639 const char *name, ext2_ino_t *inode);
1640 extern errcode_t ext2fs_follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
1641 ext2_ino_t inode, ext2_ino_t *res_inode);
1644 int ext2fs_native_flag(void);
1647 extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino,
1648 ext2_ino_t parent_ino, char **block);
1649 extern errcode_t ext2fs_new_dir_inline_data(ext2_filsys fs, ext2_ino_t dir_ino,
1650 ext2_ino_t parent_ino, __u32 *iblock);
1653 extern const struct ext2fs_nls_table *ext2fs_load_nls_table(int encoding);
1654 extern int ext2fs_check_encoded_name(const struct ext2fs_nls_table *table,
1655 char *s, size_t len, char **pos);
1656 extern int ext2fs_casefold_cmp(const struct ext2fs_nls_table *table,
1657 const unsigned char *str1, size_t len1,
1658 const unsigned char *str2, size_t len2);
1661 extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum,
1665 struct ext2fs_journal_params {
1666 blk_t num_journal_blocks;
1667 blk_t num_fc_blocks;
1669 extern errcode_t ext2fs_get_journal_params(
1670 struct ext2fs_journal_params *params, ext2_filsys fs);
1671 extern errcode_t ext2fs_zero_blocks(ext2_filsys fs, blk_t blk, int num,
1672 blk_t *ret_blk, int *ret_count);
1673 extern errcode_t ext2fs_zero_blocks2(ext2_filsys fs, blk64_t blk, int num,
1674 blk64_t *ret_blk, int *ret_count);
1675 extern errcode_t ext2fs_create_journal_superblock(ext2_filsys fs,
1676 __u32 num_blocks, int flags,
1678 extern errcode_t ext2fs_create_journal_superblock2(ext2_filsys fs,
1679 struct ext2fs_journal_params *params,
1680 int flags, char **ret_jsb);
1681 extern errcode_t ext2fs_add_journal_device(ext2_filsys fs,
1682 ext2_filsys journal_dev);
1683 extern errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t num_blocks,
1685 extern errcode_t ext2fs_add_journal_inode2(ext2_filsys fs, blk_t num_blocks,
1686 blk64_t goal, int flags);
1687 extern errcode_t ext2fs_add_journal_inode3(ext2_filsys fs,
1688 struct ext2fs_journal_params *params,
1689 blk64_t goal, int flags);
1690 extern int ext2fs_default_journal_size(__u64 num_blocks);
1691 extern int ext2fs_journal_sb_start(int blocksize);
1694 extern errcode_t ext2fs_open(const char *name, int flags, int superblock,
1695 unsigned int block_size, io_manager manager,
1696 ext2_filsys *ret_fs);
1697 extern errcode_t ext2fs_open2(const char *name, const char *io_options,
1698 int flags, int superblock,
1699 unsigned int block_size, io_manager manager,
1700 ext2_filsys *ret_fs);
1702 * The dgrp_t argument to these two functions is not actually a group number
1703 * but a block number offset within a group table! Convert with the formula
1704 * (group_number / groups_per_block).
1706 extern blk64_t ext2fs_descriptor_block_loc2(ext2_filsys fs,
1707 blk64_t group_block, dgrp_t i);
1708 extern blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block,
1710 errcode_t ext2fs_get_data_io(ext2_filsys fs, io_channel *old_io);
1711 errcode_t ext2fs_set_data_io(ext2_filsys fs, io_channel new_io);
1712 errcode_t ext2fs_rewrite_to_io(ext2_filsys fs, io_channel new_io);
1715 extern errcode_t ext2fs_create_orphan_file(ext2_filsys fs, blk_t num_blocks);
1716 extern errcode_t ext2fs_truncate_orphan_file(ext2_filsys fs);
1717 extern e2_blkcnt_t ext2fs_default_orphan_file_blocks(ext2_filsys fs);
1718 extern __u32 ext2fs_do_orphan_file_block_csum(ext2_filsys fs, ext2_ino_t ino,
1719 __u32 gen, blk64_t blk,
1721 extern errcode_t ext2fs_orphan_file_block_csum_set(ext2_filsys fs,
1722 ext2_ino_t ino, blk64_t blk,
1724 extern int ext2fs_orphan_file_block_csum_verify(ext2_filsys fs, ext2_ino_t ino,
1725 blk64_t blk, char *buf);
1727 /* get_pathname.c */
1728 extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino,
1732 #define EXT2FS_UNLINK_FORCE 0x1 /* Forcefully unlink even if
1733 * the inode number doesn't
1736 errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name,
1737 ext2_ino_t ino, int flags);
1738 errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir, const char *name,
1739 ext2_ino_t ino, int flags);
1742 errcode_t ext2fs_symlink(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t ino,
1743 const char *name, const char *target);
1744 int ext2fs_is_fast_symlink(struct ext2_inode *inode);
1747 errcode_t ext2fs_mmp_read(ext2_filsys fs, blk64_t mmp_blk, void *buf);
1748 errcode_t ext2fs_mmp_write(ext2_filsys fs, blk64_t mmp_blk, void *buf);
1749 errcode_t ext2fs_mmp_clear(ext2_filsys fs);
1750 errcode_t ext2fs_mmp_init(ext2_filsys fs);
1751 errcode_t ext2fs_mmp_start(ext2_filsys fs);
1752 errcode_t ext2fs_mmp_update(ext2_filsys fs);
1753 errcode_t ext2fs_mmp_update2(ext2_filsys fs, int immediately);
1754 errcode_t ext2fs_mmp_stop(ext2_filsys fs);
1755 unsigned ext2fs_mmp_new_seq(void);
1758 extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs,
1759 ext2_badblocks_list *bb_list);
1761 /* read_bb_file.c */
1762 extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f,
1763 ext2_badblocks_list *bb_list,
1765 void (*invalid)(ext2_filsys fs,
1769 extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f,
1770 ext2_badblocks_list *bb_list,
1771 void (*invalid)(ext2_filsys fs,
1775 extern errcode_t ext2fs_create_resize_inode(ext2_filsys fs);
1778 extern errcode_t ext2fs_rw_bitmaps(ext2_filsys fs, int flags, int num_threads);
1779 extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs);
1780 extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs);
1781 extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs);
1782 extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs);
1783 extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs);
1784 extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs);
1787 #define EXT2FS_SHA256_LENGTH 32
1789 extern void ext2fs_sha256(const unsigned char *in, unsigned long in_size,
1790 unsigned char out[EXT2FS_SHA256_LENGTH]);
1794 #define EXT2FS_SHA512_LENGTH 64
1795 extern void ext2fs_sha512(const unsigned char *in, unsigned long in_size,
1796 unsigned char out[EXT2FS_SHA512_LENGTH]);
1799 extern errcode_t ext2fs_dirent_swab_in2(ext2_filsys fs, char *buf, size_t size,
1801 extern errcode_t ext2fs_dirent_swab_in(ext2_filsys fs, char *buf, int flags);
1802 extern errcode_t ext2fs_dirent_swab_out2(ext2_filsys fs, char *buf, size_t size,
1804 extern errcode_t ext2fs_dirent_swab_out(ext2_filsys fs, char *buf, int flags);
1805 extern void ext2fs_swap_ext_attr(char *to, char *from, int bufsize,
1807 extern void ext2fs_swap_ext_attr_header(struct ext2_ext_attr_header *to_header,
1808 struct ext2_ext_attr_header *from_hdr);
1809 extern void ext2fs_swap_ext_attr_entry(struct ext2_ext_attr_entry *to_entry,
1810 struct ext2_ext_attr_entry *from_entry);
1811 extern void ext2fs_swap_super(struct ext2_super_block * super);
1812 extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp);
1813 extern void ext2fs_swap_group_desc2(ext2_filsys, struct ext2_group_desc *gdp);
1814 extern void ext2fs_swap_inode_full(ext2_filsys fs, struct ext2_inode_large *t,
1815 struct ext2_inode_large *f, int hostorder,
1817 extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t,
1818 struct ext2_inode *f, int hostorder);
1819 extern void ext2fs_swap_mmp(struct mmp_struct *mmp);
1822 extern int ext2fs_open_file(const char *pathname, int flags, mode_t mode);
1823 extern int ext2fs_stat(const char *path, ext2fs_struct_stat *buf);
1824 extern int ext2fs_fstat(int fd, ext2fs_struct_stat *buf);
1827 extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode);
1828 extern int ext2fs_inode_has_valid_blocks2(ext2_filsys fs,
1829 struct ext2_inode *inode);
1832 extern int ext2fs_parse_version_string(const char *ver_string);
1833 extern int ext2fs_get_library_version(const char **ver_string,
1834 const char **date_string);
1836 /* write_bb_file.c */
1837 extern errcode_t ext2fs_write_bb_FILE(ext2_badblocks_list bb_list,
1842 /* inline functions */
1843 #ifdef NO_INLINE_FUNCS
1844 extern errcode_t ext2fs_get_mem(unsigned long size, void *ptr);
1845 extern errcode_t ext2fs_get_memzero(unsigned long size, void *ptr);
1846 extern errcode_t ext2fs_get_array(unsigned long count,
1847 unsigned long size, void *ptr);
1848 extern errcode_t ext2fs_get_arrayzero(unsigned long count,
1849 unsigned long size, void *ptr);
1850 extern errcode_t ext2fs_free_mem(void *ptr);
1851 extern errcode_t ext2fs_resize_mem(unsigned long old_size,
1852 unsigned long size, void *ptr);
1853 extern errcode_t ext2fs_resize_array(unsigned long old_count, unsigned long count,
1854 unsigned long size, void *ptr);
1855 extern void ext2fs_mark_super_dirty(ext2_filsys fs);
1856 extern void ext2fs_mark_changed(ext2_filsys fs);
1857 extern int ext2fs_test_changed(ext2_filsys fs);
1858 extern void ext2fs_mark_valid(ext2_filsys fs);
1859 extern void ext2fs_unmark_valid(ext2_filsys fs);
1860 extern int ext2fs_test_valid(ext2_filsys fs);
1861 extern void ext2fs_mark_ib_dirty(ext2_filsys fs);
1862 extern void ext2fs_mark_bb_dirty(ext2_filsys fs);
1863 extern int ext2fs_test_ib_dirty(ext2_filsys fs);
1864 extern int ext2fs_test_bb_dirty(ext2_filsys fs);
1865 extern dgrp_t ext2fs_group_of_blk(ext2_filsys fs, blk_t blk);
1866 extern dgrp_t ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino);
1867 extern blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group);
1868 extern blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group);
1869 extern blk_t ext2fs_inode_data_blocks(ext2_filsys fs,
1870 struct ext2_inode *inode);
1871 extern int ext2fs_htree_intnode_maxrecs(ext2_filsys fs, int blocks);
1872 extern unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b);
1873 extern __u64 ext2fs_div64_ceil(__u64 a, __u64 b);
1874 extern int ext2fs_dirent_name_len(const struct ext2_dir_entry *entry);
1875 extern void ext2fs_dirent_set_name_len(struct ext2_dir_entry *entry, int len);
1876 extern int ext2fs_dirent_file_type(const struct ext2_dir_entry *entry);
1877 extern void ext2fs_dirent_set_file_type(struct ext2_dir_entry *entry, int type);
1878 extern struct ext2_inode *ext2fs_inode(struct ext2_inode_large * large_inode);
1879 extern const struct ext2_inode *ext2fs_const_inode(const struct ext2_inode_large * large_inode);
1880 extern int ext2fs_inodes_per_orphan_block(ext2_filsys fs);
1881 extern struct ext4_orphan_block_tail *ext2fs_orphan_block_tail(ext2_filsys fs,
1886 * The actual inlined functions definitions themselves...
1888 * If NO_INLINE_FUNCS is defined, then we won't try to do inline
1891 #if (defined(INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS))
1892 #ifdef INCLUDE_INLINE_FUNCS
1893 #define _INLINE_ extern
1895 #if (__STDC_VERSION__ >= 199901L)
1896 #define _INLINE_ inline
1899 #define _INLINE_ extern __inline__
1900 #else /* For Watcom C */
1901 #define _INLINE_ extern inline
1902 #endif /* __GNUC__ */
1903 #endif /* __STDC_VERSION__ >= 199901L */
1906 #ifndef EXT2_CUSTOM_MEMORY_ROUTINES
1909 * Allocate memory. The 'ptr' arg must point to a pointer.
1911 _INLINE_ errcode_t ext2fs_get_mem(unsigned long size, void *ptr)
1917 return EXT2_ET_NO_MEMORY;
1918 memcpy(ptr, &pp, sizeof (pp));
1922 _INLINE_ errcode_t ext2fs_get_memzero(unsigned long size, void *ptr)
1928 return EXT2_ET_NO_MEMORY;
1929 memset(pp, 0, size);
1930 memcpy(ptr, &pp, sizeof(pp));
1934 _INLINE_ errcode_t ext2fs_get_array(unsigned long count, unsigned long size,
1937 if (count && (~0UL)/count < size)
1938 return EXT2_ET_NO_MEMORY;
1939 return ext2fs_get_mem(count*size, ptr);
1942 _INLINE_ errcode_t ext2fs_get_arrayzero(unsigned long count,
1943 unsigned long size, void *ptr)
1945 if (count && (~0UL)/count < size)
1946 return EXT2_ET_NO_MEMORY;
1948 return ext2fs_get_memzero((size_t)count * size, ptr);
1952 * Free memory. The 'ptr' arg must point to a pointer.
1954 _INLINE_ errcode_t ext2fs_free_mem(void *ptr)
1958 memcpy(&p, ptr, sizeof(p));
1961 memcpy(ptr, &p, sizeof(p));
1966 * Resize memory. The 'ptr' arg must point to a pointer.
1968 _INLINE_ errcode_t ext2fs_resize_mem(unsigned long EXT2FS_ATTR((unused)) old_size,
1969 unsigned long size, void *ptr)
1973 /* Use "memcpy" for pointer assignments here to avoid problems
1974 * with C99 strict type aliasing rules. */
1975 memcpy(&p, ptr, sizeof(p));
1976 p = realloc(p, size);
1978 return EXT2_ET_NO_MEMORY;
1979 memcpy(ptr, &p, sizeof(p));
1984 * Resize array. The 'ptr' arg must point to a pointer.
1986 _INLINE_ errcode_t ext2fs_resize_array(unsigned long size,
1987 unsigned long old_count,
1988 unsigned long count, void *ptr)
1990 unsigned long old_size;
1993 if (count && (~0UL)/count < size)
1994 return EXT2_ET_NO_MEMORY;
1997 old_size = size * old_count;
1998 retval = ext2fs_resize_mem(old_size, size, ptr);
2002 if (size > old_size) {
2005 memcpy(&p, ptr, sizeof(p));
2006 memset((char *)p + old_size, 0, size - old_size);
2007 memcpy(ptr, &p, sizeof(p));
2012 #endif /* Custom memory routines */
2015 * Mark a filesystem superblock as dirty
2017 _INLINE_ void ext2fs_mark_super_dirty(ext2_filsys fs)
2019 fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_CHANGED;
2023 * Mark a filesystem as changed
2025 _INLINE_ void ext2fs_mark_changed(ext2_filsys fs)
2027 fs->flags |= EXT2_FLAG_CHANGED;
2031 * Check to see if a filesystem has changed
2033 _INLINE_ int ext2fs_test_changed(ext2_filsys fs)
2035 return (fs->flags & EXT2_FLAG_CHANGED);
2039 * Mark a filesystem as valid
2041 _INLINE_ void ext2fs_mark_valid(ext2_filsys fs)
2043 fs->flags |= EXT2_FLAG_VALID;
2047 * Mark a filesystem as NOT valid
2049 _INLINE_ void ext2fs_unmark_valid(ext2_filsys fs)
2051 fs->flags &= ~EXT2_FLAG_VALID;
2055 * Check to see if a filesystem is valid
2057 _INLINE_ int ext2fs_test_valid(ext2_filsys fs)
2059 return (fs->flags & EXT2_FLAG_VALID);
2063 * Mark the inode bitmap as dirty
2065 _INLINE_ void ext2fs_mark_ib_dirty(ext2_filsys fs)
2067 fs->flags |= EXT2_FLAG_IB_DIRTY | EXT2_FLAG_CHANGED;
2071 * Mark the block bitmap as dirty
2073 _INLINE_ void ext2fs_mark_bb_dirty(ext2_filsys fs)
2075 fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_CHANGED;
2079 * Check to see if a filesystem's inode bitmap is dirty
2081 _INLINE_ int ext2fs_test_ib_dirty(ext2_filsys fs)
2083 return (fs->flags & EXT2_FLAG_IB_DIRTY);
2087 * Check to see if a filesystem's block bitmap is dirty
2089 _INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs)
2091 return (fs->flags & EXT2_FLAG_BB_DIRTY);
2095 * Return the group # of a block
2097 _INLINE_ dgrp_t ext2fs_group_of_blk(ext2_filsys fs, blk_t blk)
2099 return ext2fs_group_of_blk2(fs, blk);
2102 * Return the group # of an inode number
2104 _INLINE_ dgrp_t ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino)
2106 return (ino - 1) / fs->super->s_inodes_per_group;
2110 * Return the first block (inclusive) in a group
2112 _INLINE_ blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group)
2114 return (blk_t) ext2fs_group_first_block2(fs, group);
2118 * Return the last block (inclusive) in a group
2120 _INLINE_ blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group)
2122 return (blk_t) ext2fs_group_last_block2(fs, group);
2125 _INLINE_ blk_t ext2fs_inode_data_blocks(ext2_filsys fs,
2126 struct ext2_inode *inode)
2128 return (blk_t) ext2fs_inode_data_blocks2(fs, inode);
2131 _INLINE_ int ext2fs_htree_intnode_maxrecs(ext2_filsys fs, int blocks)
2135 if ((EXT2_SB(fs->super)->s_feature_ro_compat &
2136 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM) != 0)
2137 csum_size = sizeof(struct ext2_dx_tail);
2138 return blocks * ((fs->blocksize - (8 + csum_size)) /
2139 sizeof(struct ext2_dx_entry));
2143 * This is an efficient, overflow safe way of calculating ceil((1.0 * a) / b)
2145 _INLINE_ unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b)
2149 return ((a - 1) / b) + 1;
2152 _INLINE_ __u64 ext2fs_div64_ceil(__u64 a, __u64 b)
2156 return ((a - 1) / b) + 1;
2159 _INLINE_ int ext2fs_dirent_name_len(const struct ext2_dir_entry *entry)
2161 return entry->name_len & 0xff;
2164 _INLINE_ void ext2fs_dirent_set_name_len(struct ext2_dir_entry *entry, int len)
2166 entry->name_len = (entry->name_len & 0xff00) | (len & 0xff);
2169 _INLINE_ int ext2fs_dirent_file_type(const struct ext2_dir_entry *entry)
2171 return entry->name_len >> 8;
2174 _INLINE_ void ext2fs_dirent_set_file_type(struct ext2_dir_entry *entry, int type)
2176 entry->name_len = (entry->name_len & 0xff) | (type << 8);
2179 _INLINE_ struct ext2_inode *ext2fs_inode(struct ext2_inode_large * large_inode)
2181 /* It is always safe to convert large inode to a small inode */
2182 return (struct ext2_inode *) large_inode;
2185 _INLINE_ const struct ext2_inode *
2186 ext2fs_const_inode(const struct ext2_inode_large * large_inode)
2188 /* It is always safe to convert large inode to a small inode */
2189 return (const struct ext2_inode *) large_inode;
2192 _INLINE_ int ext2fs_inodes_per_orphan_block(ext2_filsys fs)
2194 return (fs->blocksize - sizeof(struct ext4_orphan_block_tail)) /
2198 _INLINE_ struct ext4_orphan_block_tail *
2199 ext2fs_orphan_block_tail(ext2_filsys fs, char *buf)
2201 return (struct ext4_orphan_block_tail *)(buf + fs->blocksize -
2202 sizeof(struct ext4_orphan_block_tail));
2208 /* htree levels for ext4 */
2209 #define EXT4_HTREE_LEVEL_COMPAT 2
2210 #define EXT4_HTREE_LEVEL 3
2212 static inline unsigned int ext2_dir_htree_level(ext2_filsys fs)
2214 if (ext2fs_has_feature_largedir(fs->super))
2215 return EXT4_HTREE_LEVEL;
2217 return EXT4_HTREE_LEVEL_COMPAT;
2224 #endif /* _EXT2FS_EXT2FS_H */