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 * Internal flags for use by the ext2fs library only
227 #define EXT2_FLAG2_USE_FAKE_TIME 0x000000001
230 * Special flag in the ext2 inode i_flag field that means that this is
231 * a new inode. (So that ext2_write_inode() can clear extra fields.)
233 #define EXT2_NEW_INODE_FL 0x80000000
236 * Flags for mkjournal
238 #define EXT2_MKJOURNAL_V1_SUPER 0x0000001 /* create V1 superblock (deprecated) */
239 #define EXT2_MKJOURNAL_LAZYINIT 0x0000002 /* don't zero journal inode before use*/
240 #define EXT2_MKJOURNAL_NO_MNT_CHECK 0x0000004 /* don't check mount status */
243 * Normal journal area size to fast commit area size ratio. This is used to
244 * set default size of fast commit area.
246 #define EXT2_JOURNAL_TO_FC_BLKS_RATIO 64
248 struct blk_alloc_ctx;
249 struct opaque_ext2_group_desc;
251 struct struct_ext2_filsys {
256 struct ext2_super_block * super;
257 unsigned int blocksize;
259 dgrp_t group_desc_count;
260 unsigned long desc_blocks;
261 struct opaque_ext2_group_desc * group_desc;
262 unsigned int inode_blocks_per_group;
263 ext2fs_inode_bitmap inode_map;
264 ext2fs_block_bitmap block_map;
265 /* XXX FIXME-64: not 64-bit safe, but not used? */
266 errcode_t (*get_blocks)(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks);
267 errcode_t (*check_directory)(ext2_filsys fs, ext2_ino_t ino);
268 errcode_t (*write_bitmaps)(ext2_filsys fs);
269 errcode_t (*read_inode)(ext2_filsys fs, ext2_ino_t ino,
270 struct ext2_inode *inode);
271 errcode_t (*write_inode)(ext2_filsys fs, ext2_ino_t ino,
272 struct ext2_inode *inode);
273 ext2_badblocks_list badblocks;
275 __u32 stride; /* for mke2fs */
276 struct ext2_super_block * orig_super;
277 struct ext2_image_hdr * image_header;
280 int cluster_ratio_bits;
281 __u16 default_bitmap_type;
285 * Reserved for future expansion
290 * Reserved for the use of the calling application.
297 struct ext2_inode_cache *icache;
301 * More callback functions
303 errcode_t (*get_alloc_block)(ext2_filsys fs, blk64_t goal,
305 errcode_t (*get_alloc_block2)(ext2_filsys fs, blk64_t goal,
306 blk64_t *ret, struct blk_alloc_ctx *ctx);
307 void (*block_alloc_stats)(ext2_filsys fs, blk64_t blk, int inuse);
310 * Buffers for Multiple mount protection(MMP) block.
317 * Time at which e2fsck last updated the MMP block.
319 long mmp_last_written;
321 /* progress operation functions */
322 struct ext2fs_progress_ops *progress_ops;
324 /* Precomputed FS UUID checksum for seeding other checksums */
327 io_channel journal_io;
330 /* New block range allocation hooks */
331 errcode_t (*new_range)(ext2_filsys fs, int flags, blk64_t goal,
332 blk64_t len, blk64_t *pblk, blk64_t *plen);
333 void (*block_alloc_stats_range)(ext2_filsys fs, blk64_t blk, blk_t num,
336 /* hashmap for SHA of data blocks */
337 struct ext2fs_hashmap* block_sha_map;
339 const struct ext2fs_nls_table *encoding;
342 #if EXT2_FLAT_INCLUDES
343 #include "e2_bitops.h"
345 #include <ext2fs/bitops.h>
349 * 64-bit bitmap backend types
351 #define EXT2FS_BMAP64_BITARRAY 1
352 #define EXT2FS_BMAP64_RBTREE 2
353 #define EXT2FS_BMAP64_AUTODIR 3
356 * Return flags for the block iterator functions
358 #define BLOCK_CHANGED 1
359 #define BLOCK_ABORT 2
360 #define BLOCK_ERROR 4
361 #define BLOCK_INLINE_DATA_CHANGED 8
364 * Block iterate flags
366 * BLOCK_FLAG_APPEND, or BLOCK_FLAG_HOLE, indicates that the iterator
367 * function should be called on blocks where the block number is zero.
368 * This is used by ext2fs_expand_dir() to be able to add a new block
369 * to an inode. It can also be used for programs that want to be able
370 * to deal with files that contain "holes".
372 * BLOCK_FLAG_DEPTH_TRAVERSE indicates that the iterator function for
373 * the indirect, doubly indirect, etc. blocks should be called after
374 * all of the blocks contained in the indirect blocks are processed.
375 * This is useful if you are going to be deallocating blocks from an
378 * BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be
379 * called for data blocks only.
381 * BLOCK_FLAG_READ_ONLY is a promise by the caller that it will not
382 * modify returned block number.
384 * BLOCK_FLAG_NO_LARGE is for internal use only. It informs
385 * ext2fs_block_iterate2 that large files won't be accepted.
387 #define BLOCK_FLAG_APPEND 1
388 #define BLOCK_FLAG_HOLE 1
389 #define BLOCK_FLAG_DEPTH_TRAVERSE 2
390 #define BLOCK_FLAG_DATA_ONLY 4
391 #define BLOCK_FLAG_READ_ONLY 8
393 #define BLOCK_FLAG_NO_LARGE 0x1000
396 * Magic "block count" return values for the block iterator function.
398 #define BLOCK_COUNT_IND (-1)
399 #define BLOCK_COUNT_DIND (-2)
400 #define BLOCK_COUNT_TIND (-3)
401 #define BLOCK_COUNT_TRANSLATOR (-4)
403 #define BLOCK_ALLOC_UNKNOWN 0
404 #define BLOCK_ALLOC_DATA 1
405 #define BLOCK_ALLOC_METADATA 2
407 struct blk_alloc_ctx {
409 struct ext2_inode *inode;
416 * Flags for ext2fs_move_blocks
418 #define EXT2_BMOVE_GET_DBLIST 0x0001
419 #define EXT2_BMOVE_DEBUG 0x0002
423 * Generic (non-filesystem layout specific) extents structure
426 #define EXT2_EXTENT_FLAGS_LEAF 0x0001
427 #define EXT2_EXTENT_FLAGS_UNINIT 0x0002
428 #define EXT2_EXTENT_FLAGS_SECOND_VISIT 0x0004
430 struct ext2fs_extent {
431 blk64_t e_pblk; /* first physical block */
432 blk64_t e_lblk; /* first logical block extent covers */
433 __u32 e_len; /* number of blocks covered by extent */
434 __u32 e_flags; /* extent flags */
437 typedef struct ext2_extent_handle *ext2_extent_handle_t;
438 typedef struct ext2_extent_path *ext2_extent_path_t;
441 * Flags used by ext2fs_extent_get()
443 #define EXT2_EXTENT_CURRENT 0x0000
444 #define EXT2_EXTENT_MOVE_MASK 0x000F
445 #define EXT2_EXTENT_ROOT 0x0001
446 #define EXT2_EXTENT_LAST_LEAF 0x0002
447 #define EXT2_EXTENT_FIRST_SIB 0x0003
448 #define EXT2_EXTENT_LAST_SIB 0x0004
449 #define EXT2_EXTENT_NEXT_SIB 0x0005
450 #define EXT2_EXTENT_PREV_SIB 0x0006
451 #define EXT2_EXTENT_NEXT_LEAF 0x0007
452 #define EXT2_EXTENT_PREV_LEAF 0x0008
453 #define EXT2_EXTENT_NEXT 0x0009
454 #define EXT2_EXTENT_PREV 0x000A
455 #define EXT2_EXTENT_UP 0x000B
456 #define EXT2_EXTENT_DOWN 0x000C
457 #define EXT2_EXTENT_DOWN_AND_LAST 0x000D
460 * Flags used by ext2fs_extent_insert()
462 #define EXT2_EXTENT_INSERT_AFTER 0x0001 /* insert after handle loc'n */
463 #define EXT2_EXTENT_INSERT_NOSPLIT 0x0002 /* insert may not cause split */
466 * Flags used by ext2fs_extent_delete()
468 #define EXT2_EXTENT_DELETE_KEEP_EMPTY 0x001 /* keep node if last extent gone */
471 * Flags used by ext2fs_extent_set_bmap()
473 #define EXT2_EXTENT_SET_BMAP_UNINIT 0x0001
476 * Data structure returned by ext2fs_extent_get_info()
478 struct ext2_extent_info {
488 __u32 max_uninit_len;
492 * Flags for directory block reading and writing functions
494 #define EXT2_DIRBLOCK_V2_STRUCT 0x0001
497 * Return flags for the directory iterator functions
499 #define DIRENT_CHANGED 1
500 #define DIRENT_ABORT 2
501 #define DIRENT_ERROR 3
504 * Directory iterator flags
507 #define DIRENT_FLAG_INCLUDE_EMPTY 1
508 #define DIRENT_FLAG_INCLUDE_REMOVED 2
509 #define DIRENT_FLAG_INCLUDE_CSUM 4
510 #define DIRENT_FLAG_INCLUDE_INLINE_DATA 8
512 #define DIRENT_DOT_FILE 1
513 #define DIRENT_DOT_DOT_FILE 2
514 #define DIRENT_OTHER_FILE 3
515 #define DIRENT_DELETED_FILE 4
516 #define DIRENT_CHECKSUM 5
519 * Inode scan definitions
521 typedef struct ext2_struct_inode_scan *ext2_inode_scan;
526 #define EXT2_SF_CHK_BADBLOCKS 0x0001
527 #define EXT2_SF_BAD_INODE_BLK 0x0002
528 #define EXT2_SF_BAD_EXTRA_BYTES 0x0004
529 #define EXT2_SF_SKIP_MISSING_ITABLE 0x0008
530 #define EXT2_SF_DO_LAZY 0x0010
531 #define EXT2_SF_WARN_GARBAGE_INODES 0x0020
534 * ext2fs_check_if_mounted flags
536 #define EXT2_MF_MOUNTED 1
537 #define EXT2_MF_ISROOT 2
538 #define EXT2_MF_READONLY 4
539 #define EXT2_MF_SWAP 8
540 #define EXT2_MF_BUSY 16
541 #define EXT2_MF_EXTFS 32
544 * Ext2/linux mode flags. We define them here so that we don't need
545 * to depend on the OS's sys/stat.h, since we may be compiling on a
548 #define LINUX_S_IFMT 00170000
549 #define LINUX_S_IFSOCK 0140000
550 #define LINUX_S_IFLNK 0120000
551 #define LINUX_S_IFREG 0100000
552 #define LINUX_S_IFBLK 0060000
553 #define LINUX_S_IFDIR 0040000
554 #define LINUX_S_IFCHR 0020000
555 #define LINUX_S_IFIFO 0010000
556 #define LINUX_S_ISUID 0004000
557 #define LINUX_S_ISGID 0002000
558 #define LINUX_S_ISVTX 0001000
560 #define LINUX_S_IRWXU 00700
561 #define LINUX_S_IRUSR 00400
562 #define LINUX_S_IWUSR 00200
563 #define LINUX_S_IXUSR 00100
565 #define LINUX_S_IRWXG 00070
566 #define LINUX_S_IRGRP 00040
567 #define LINUX_S_IWGRP 00020
568 #define LINUX_S_IXGRP 00010
570 #define LINUX_S_IRWXO 00007
571 #define LINUX_S_IROTH 00004
572 #define LINUX_S_IWOTH 00002
573 #define LINUX_S_IXOTH 00001
575 #define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK)
576 #define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG)
577 #define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR)
578 #define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR)
579 #define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK)
580 #define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO)
581 #define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK)
584 * ext2 size of an inode
586 #define EXT2_I_SIZE(i) ((i)->i_size | ((__u64) (i)->i_size_high << 32))
588 static inline __u32 __encode_extra_time(time_t seconds, __u32 nsec)
592 #if (SIZEOF_TIME_T > 4)
593 extra = ((seconds - (__s32)(seconds & 0xffffffff)) >> 32) &
596 return extra | (nsec << EXT4_EPOCH_BITS);
598 static inline time_t __decode_extra_sec(time_t seconds, __u32 extra)
600 #if (SIZEOF_TIME_T > 4)
601 if (extra & EXT4_EPOCH_MASK)
602 seconds += ((time_t)(extra & EXT4_EPOCH_MASK) << 32);
606 static inline __u32 __decode_extra_nsec(__u32 extra)
608 return (extra & EXT4_NSEC_MASK) >> EXT4_EPOCH_BITS;
610 #define ext2fs_inode_actual_size(inode) \
611 ((size_t)(EXT2_GOOD_OLD_INODE_SIZE + \
612 (sizeof(*inode) > EXT2_GOOD_OLD_INODE_SIZE ? \
613 ((struct ext2_inode_large *)(inode))->i_extra_isize : 0)))
614 #define clamp(val, min, max) ((val) < (min) ? (min) : ((val) > (max) ? \
616 #define ext2fs_inode_xtime_set(inode, field, sec) \
618 if (ext2fs_inode_includes(ext2fs_inode_actual_size(inode), \
619 field ## _extra)) { \
620 (inode)->field = (__s32)(sec & 0xfffffff); \
621 ((struct ext2_inode_large *)(inode))->field ## _extra = \
622 __encode_extra_time(sec, 0); \
624 (inode)->field = clamp(sec, INT32_MIN, INT32_MAX); \
627 #define ext2fs_inode_xtime_get(inode, field) \
628 (ext2fs_inode_includes(ext2fs_inode_actual_size(inode), field ## _extra) ? \
629 __decode_extra_sec((inode)->field, \
630 ((struct ext2_inode_large *)(inode))->field ## _extra) : \
631 (time_t)(inode)->field)
633 static inline void __sb_set_tstamp(__u32 *lo, __u8 *hi, time_t seconds)
635 *lo = seconds & 0xffffffff;
636 #if (SIZEOF_TIME_T > 4)
637 *hi = (seconds >> 32) & EXT4_EPOCH_MASK;
642 static inline time_t __sb_get_tstamp(__u32 *lo, __u8 *hi)
644 #if (SIZEOF_TIME_T == 4)
647 return ((time_t)(*hi) << 32) | *lo;
650 #define ext2fs_set_tstamp(sb, field, seconds) \
651 __sb_set_tstamp(&(sb)->field, &(sb)->field ## _hi, seconds)
652 #define ext2fs_get_tstamp(sb, field) \
653 __sb_get_tstamp(&(sb)->field, &(sb)->field ## _hi)
656 * ext2_icount_t abstraction
658 #define EXT2_ICOUNT_OPT_INCREMENT 0x01
659 #define EXT2_ICOUNT_OPT_FULLMAP 0x02
661 typedef struct ext2_icount *ext2_icount_t;
664 * Flags for ext2fs_bmap
666 #define BMAP_ALLOC 0x0001
667 #define BMAP_SET 0x0002
668 #define BMAP_UNINIT 0x0004
669 #define BMAP_ZERO 0x0008
672 * Returned flags from ext2fs_bmap
674 #define BMAP_RET_UNINIT 0x0001
677 * Flags for ext2fs_read_inode2
679 #define READ_INODE_NOCSUM 0x0001
682 * Flags for ext2fs_write_inode2
684 #define WRITE_INODE_NOCSUM 0x0001
687 * Flags for imager.c functions
689 #define IMAGER_FLAG_INODEMAP 1
690 #define IMAGER_FLAG_SPARSEWRITE 2
693 * For checking structure magic numbers...
696 #define EXT2_CHECK_MAGIC(struct, code) \
697 if ((struct)->magic != (code)) return (code)
700 * Features supported by this version of the library
702 #define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\
703 EXT2_FEATURE_COMPAT_IMAGIC_INODES|\
704 EXT3_FEATURE_COMPAT_HAS_JOURNAL|\
705 EXT2_FEATURE_COMPAT_RESIZE_INODE|\
706 EXT2_FEATURE_COMPAT_DIR_INDEX|\
707 EXT2_FEATURE_COMPAT_EXT_ATTR|\
708 EXT4_FEATURE_COMPAT_SPARSE_SUPER2|\
709 EXT4_FEATURE_COMPAT_FAST_COMMIT|\
710 EXT4_FEATURE_COMPAT_STABLE_INODES|\
711 EXT4_FEATURE_COMPAT_ORPHAN_FILE)
714 #define EXT4_LIB_INCOMPAT_MMP EXT4_FEATURE_INCOMPAT_MMP
716 #define EXT4_LIB_INCOMPAT_MMP (0)
719 #define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\
720 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\
721 EXT2_FEATURE_INCOMPAT_META_BG|\
722 EXT3_FEATURE_INCOMPAT_RECOVER|\
723 EXT3_FEATURE_INCOMPAT_EXTENTS|\
724 EXT4_FEATURE_INCOMPAT_FLEX_BG|\
725 EXT4_FEATURE_INCOMPAT_EA_INODE|\
726 EXT4_LIB_INCOMPAT_MMP|\
727 EXT4_FEATURE_INCOMPAT_64BIT|\
728 EXT4_FEATURE_INCOMPAT_INLINE_DATA|\
729 EXT4_FEATURE_INCOMPAT_ENCRYPT|\
730 EXT4_FEATURE_INCOMPAT_CASEFOLD|\
731 EXT4_FEATURE_INCOMPAT_CSUM_SEED|\
732 EXT4_FEATURE_INCOMPAT_LARGEDIR)
734 #define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\
735 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|\
736 EXT2_FEATURE_RO_COMPAT_LARGE_FILE|\
737 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|\
738 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|\
739 EXT4_FEATURE_RO_COMPAT_GDT_CSUM|\
740 EXT4_FEATURE_RO_COMPAT_BIGALLOC|\
741 EXT4_FEATURE_RO_COMPAT_QUOTA|\
742 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM|\
743 EXT4_FEATURE_RO_COMPAT_READONLY |\
744 EXT4_FEATURE_RO_COMPAT_PROJECT |\
745 EXT4_FEATURE_RO_COMPAT_SHARED_BLOCKS |\
746 EXT4_FEATURE_RO_COMPAT_VERITY |\
747 EXT4_FEATURE_RO_COMPAT_ORPHAN_PRESENT)
750 * These features are only allowed if EXT2_FLAG_SOFTSUPP_FEATURES is passed
753 #define EXT2_LIB_SOFTSUPP_INCOMPAT (0)
754 #define EXT2_LIB_SOFTSUPP_RO_COMPAT (EXT4_FEATURE_RO_COMPAT_REPLICA)
757 /* Translate a block number to a cluster number */
758 #define EXT2FS_CLUSTER_RATIO(fs) (1 << (fs)->cluster_ratio_bits)
759 #define EXT2FS_CLUSTER_MASK(fs) (EXT2FS_CLUSTER_RATIO(fs) - 1)
760 #define EXT2FS_B2C(fs, blk) ((blk) >> (fs)->cluster_ratio_bits)
761 /* Translate a cluster number to a block number */
762 #define EXT2FS_C2B(fs, cluster) ((cluster) << (fs)->cluster_ratio_bits)
763 /* Translate # of blks to # of clusters */
764 #define EXT2FS_NUM_B2C(fs, blks) (((blks) + EXT2FS_CLUSTER_MASK(fs)) >> \
765 (fs)->cluster_ratio_bits)
767 #if defined(HAVE_FSTAT64) && !defined(__OSX_AVAILABLE_BUT_DEPRECATED)
768 typedef struct stat64 ext2fs_struct_stat;
770 typedef struct stat ext2fs_struct_stat;
774 * For ext2fs_close2() and ext2fs_flush2(), this flag allows you to
775 * avoid the fsync call.
777 #define EXT2_FLAG_FLUSH_NO_SYNC 1
780 * Modify and iterate extended attributes
782 struct ext2_xattr_handle;
783 #define XATTR_ABORT 1
784 #define XATTR_CHANGED 2
787 * flags for ext2fs_rw_bitmaps()
789 #define EXT2FS_BITMAPS_WRITE 0x0001
790 #define EXT2FS_BITMAPS_BLOCK 0x0002
791 #define EXT2FS_BITMAPS_INODE 0x0004
792 #define EXT2FS_BITMAPS_VALID_FLAGS 0x0007
795 * function prototypes
797 static inline int ext2fs_has_group_desc_csum(ext2_filsys fs)
799 return ext2fs_has_feature_metadata_csum(fs->super) ||
800 ext2fs_has_feature_gdt_csum(fs->super);
803 /* The LARGE_FILE feature should be set if we have stored files 2GB+ in size */
804 static inline int ext2fs_needs_large_file_feature(unsigned long long file_size)
806 return file_size >= 0x80000000ULL;
810 extern void ext2fs_clear_block_uninit(ext2_filsys fs, dgrp_t group);
811 extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode,
812 ext2fs_inode_bitmap map, ext2_ino_t *ret);
813 extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal,
814 ext2fs_block_bitmap map, blk_t *ret);
815 extern errcode_t ext2fs_new_block2(ext2_filsys fs, blk64_t goal,
816 ext2fs_block_bitmap map, blk64_t *ret);
817 extern errcode_t ext2fs_new_block3(ext2_filsys fs, blk64_t goal,
818 ext2fs_block_bitmap map, blk64_t *ret,
819 struct blk_alloc_ctx *ctx);
820 extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start,
821 blk_t finish, int num,
822 ext2fs_block_bitmap map,
824 extern errcode_t ext2fs_get_free_blocks2(ext2_filsys fs, blk64_t start,
825 blk64_t finish, int num,
826 ext2fs_block_bitmap map,
828 extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal,
829 char *block_buf, blk_t *ret);
830 extern errcode_t ext2fs_alloc_block2(ext2_filsys fs, blk64_t goal,
831 char *block_buf, blk64_t *ret);
832 extern errcode_t ext2fs_alloc_block3(ext2_filsys fs, blk64_t goal,
833 char *block_buf, blk64_t *ret,
834 struct blk_alloc_ctx *ctx);
836 extern void ext2fs_set_alloc_block_callback(ext2_filsys fs,
837 errcode_t (*func)(ext2_filsys fs,
840 errcode_t (**old)(ext2_filsys fs,
843 blk64_t ext2fs_find_inode_goal(ext2_filsys fs, ext2_ino_t ino,
844 struct ext2_inode *inode, blk64_t lblk);
845 extern void ext2fs_set_new_range_callback(ext2_filsys fs,
846 errcode_t (*func)(ext2_filsys fs, int flags, blk64_t goal,
847 blk64_t len, blk64_t *pblk, blk64_t *plen),
848 errcode_t (**old)(ext2_filsys fs, int flags, blk64_t goal,
849 blk64_t len, blk64_t *pblk, blk64_t *plen));
850 extern void ext2fs_set_block_alloc_stats_range_callback(ext2_filsys fs,
851 void (*func)(ext2_filsys fs, blk64_t blk,
852 blk_t num, int inuse),
853 void (**old)(ext2_filsys fs, blk64_t blk,
854 blk_t num, int inuse));
855 #define EXT2_NEWRANGE_FIXED_GOAL (0x1)
856 #define EXT2_NEWRANGE_MIN_LENGTH (0x2)
857 #define EXT2_NEWRANGE_ALL_FLAGS (0x3)
858 errcode_t ext2fs_new_range(ext2_filsys fs, int flags, blk64_t goal,
859 blk64_t len, ext2fs_block_bitmap map, blk64_t *pblk,
861 #define EXT2_ALLOCRANGE_FIXED_GOAL (0x1)
862 #define EXT2_ALLOCRANGE_ZERO_BLOCKS (0x2)
863 #define EXT2_ALLOCRANGE_ALL_FLAGS (0x3)
864 errcode_t ext2fs_alloc_range(ext2_filsys fs, int flags, blk64_t goal,
865 blk_t len, blk64_t *ret);
868 extern int ext2fs_reserve_super_and_bgd(ext2_filsys fs,
870 ext2fs_block_bitmap bmap);
871 extern errcode_t ext2fs_reserve_super_and_bgd2(ext2_filsys fs,
873 ext2fs_block_bitmap bmap,
875 extern void ext2fs_set_block_alloc_stats_callback(ext2_filsys fs,
876 void (*func)(ext2_filsys fs,
879 void (**old)(ext2_filsys fs,
884 void ext2fs_inode_alloc_stats(ext2_filsys fs, ext2_ino_t ino, int inuse);
885 void ext2fs_inode_alloc_stats2(ext2_filsys fs, ext2_ino_t ino,
886 int inuse, int isdir);
887 void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse);
888 void ext2fs_block_alloc_stats2(ext2_filsys fs, blk64_t blk, int inuse);
889 void ext2fs_block_alloc_stats_range(ext2_filsys fs, blk64_t blk,
890 blk_t num, int inuse);
893 extern errcode_t ext2fs_allocate_tables(ext2_filsys fs);
894 extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group,
895 ext2fs_block_bitmap bmap);
898 extern errcode_t ext2fs_u32_list_create(ext2_u32_list *ret, int size);
899 extern errcode_t ext2fs_u32_list_add(ext2_u32_list bb, __u32 blk);
900 extern int ext2fs_u32_list_find(ext2_u32_list bb, __u32 blk);
901 extern int ext2fs_u32_list_test(ext2_u32_list bb, blk_t blk);
902 extern errcode_t ext2fs_u32_list_iterate_begin(ext2_u32_list bb,
903 ext2_u32_iterate *ret);
904 extern int ext2fs_u32_list_iterate(ext2_u32_iterate iter, blk_t *blk);
905 extern void ext2fs_u32_list_iterate_end(ext2_u32_iterate iter);
906 extern errcode_t ext2fs_u32_copy(ext2_u32_list src, ext2_u32_list *dest);
907 extern int ext2fs_u32_list_equal(ext2_u32_list bb1, ext2_u32_list bb2);
909 extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret,
911 extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb,
913 extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb,
915 extern int ext2fs_u32_list_del(ext2_u32_list bb, __u32 blk);
916 extern void ext2fs_badblocks_list_del(ext2_u32_list bb, __u32 blk);
918 ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb,
919 ext2_badblocks_iterate *ret);
920 extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter,
922 extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter);
923 extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src,
924 ext2_badblocks_list *dest);
925 extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1,
926 ext2_badblocks_list bb2);
927 extern int ext2fs_u32_list_count(ext2_u32_list bb);
930 extern errcode_t badblocks_list_create(badblocks_list *ret, int size);
931 extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk);
932 extern int badblocks_list_test(badblocks_list bb, blk_t blk);
933 extern errcode_t badblocks_list_iterate_begin(badblocks_list bb,
934 badblocks_iterate *ret);
935 extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk);
936 extern void badblocks_list_iterate_end(badblocks_iterate iter);
937 extern void badblocks_list_free(badblocks_list bb);
940 extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs,
941 ext2_badblocks_list bb_list);
944 extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap);
945 extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap);
946 extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src,
947 ext2fs_generic_bitmap *dest);
948 extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs,
950 ext2fs_block_bitmap *ret);
951 extern errcode_t ext2fs_allocate_subcluster_bitmap(ext2_filsys fs,
953 ext2fs_block_bitmap *ret);
954 extern int ext2fs_get_bitmap_granularity(ext2fs_block_bitmap bitmap);
955 extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs,
957 ext2fs_inode_bitmap *ret);
958 extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap,
959 ext2_ino_t end, ext2_ino_t *oend);
960 extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap,
961 blk_t end, blk_t *oend);
962 extern errcode_t ext2fs_fudge_block_bitmap_end2(ext2fs_block_bitmap bitmap,
963 blk64_t end, blk64_t *oend);
964 extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap);
965 extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap);
966 extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end,
967 ext2fs_inode_bitmap bmap);
968 extern errcode_t ext2fs_resize_inode_bitmap2(__u64 new_end,
970 ext2fs_inode_bitmap bmap);
971 extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end,
972 ext2fs_block_bitmap bmap);
973 extern errcode_t ext2fs_resize_block_bitmap2(__u64 new_end,
975 ext2fs_block_bitmap bmap);
976 extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1,
977 ext2fs_block_bitmap bm2);
978 extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1,
979 ext2fs_inode_bitmap bm2);
980 extern errcode_t ext2fs_set_inode_bitmap_range(ext2fs_inode_bitmap bmap,
981 ext2_ino_t start, unsigned int num,
983 extern errcode_t ext2fs_set_inode_bitmap_range2(ext2fs_inode_bitmap bmap,
984 __u64 start, size_t num,
986 extern errcode_t ext2fs_get_inode_bitmap_range(ext2fs_inode_bitmap bmap,
987 ext2_ino_t start, unsigned int num,
989 extern errcode_t ext2fs_get_inode_bitmap_range2(ext2fs_inode_bitmap bmap,
990 __u64 start, size_t num,
992 extern errcode_t ext2fs_set_block_bitmap_range(ext2fs_block_bitmap bmap,
993 blk_t start, unsigned int num,
995 extern errcode_t ext2fs_set_block_bitmap_range2(ext2fs_block_bitmap bmap,
996 blk64_t start, size_t num,
998 extern errcode_t ext2fs_get_block_bitmap_range(ext2fs_block_bitmap bmap,
999 blk_t start, unsigned int num,
1001 extern errcode_t ext2fs_get_block_bitmap_range2(ext2fs_block_bitmap bmap,
1002 blk64_t start, size_t num,
1006 extern __u32 ext2fs_inode_bitmap_checksum(ext2_filsys fs, dgrp_t group);
1007 extern __u32 ext2fs_block_bitmap_checksum(ext2_filsys fs, dgrp_t group);
1008 extern dgrp_t ext2fs_group_of_blk2(ext2_filsys fs, blk64_t);
1009 extern blk64_t ext2fs_group_first_block2(ext2_filsys fs, dgrp_t group);
1010 extern blk64_t ext2fs_group_last_block2(ext2_filsys fs, dgrp_t group);
1011 extern int ext2fs_group_blocks_count(ext2_filsys fs, dgrp_t group);
1012 extern blk64_t ext2fs_inode_data_blocks2(ext2_filsys fs,
1013 struct ext2_inode *inode);
1014 extern blk64_t ext2fs_inode_i_blocks(ext2_filsys fs,
1015 struct ext2_inode *inode);
1016 extern blk64_t ext2fs_get_stat_i_blocks(ext2_filsys fs,
1017 struct ext2_inode *inode);
1018 extern blk64_t ext2fs_blocks_count(struct ext2_super_block *super);
1019 extern void ext2fs_blocks_count_set(struct ext2_super_block *super,
1021 extern void ext2fs_blocks_count_add(struct ext2_super_block *super,
1023 extern blk64_t ext2fs_r_blocks_count(struct ext2_super_block *super);
1024 extern void ext2fs_r_blocks_count_set(struct ext2_super_block *super,
1026 extern void ext2fs_r_blocks_count_add(struct ext2_super_block *super,
1028 extern blk64_t ext2fs_free_blocks_count(struct ext2_super_block *super);
1029 extern void ext2fs_free_blocks_count_set(struct ext2_super_block *super,
1031 extern void ext2fs_free_blocks_count_add(struct ext2_super_block *super,
1033 /* Block group descriptor accessor functions */
1034 extern struct ext2_group_desc *ext2fs_group_desc(ext2_filsys fs,
1035 struct opaque_ext2_group_desc *gdp,
1037 extern blk64_t ext2fs_block_bitmap_csum(ext2_filsys fs, dgrp_t group);
1038 extern blk64_t ext2fs_block_bitmap_loc(ext2_filsys fs, dgrp_t group);
1039 extern void ext2fs_block_bitmap_loc_set(ext2_filsys fs, dgrp_t group,
1041 extern __u32 ext2fs_inode_bitmap_csum(ext2_filsys fs, dgrp_t group);
1042 extern blk64_t ext2fs_inode_bitmap_loc(ext2_filsys fs, dgrp_t group);
1043 extern void ext2fs_inode_bitmap_loc_set(ext2_filsys fs, dgrp_t group,
1045 extern blk64_t ext2fs_inode_table_loc(ext2_filsys fs, dgrp_t group);
1046 extern void ext2fs_inode_table_loc_set(ext2_filsys fs, dgrp_t group,
1048 extern __u32 ext2fs_bg_free_blocks_count(ext2_filsys fs, dgrp_t group);
1049 extern void ext2fs_bg_free_blocks_count_set(ext2_filsys fs, dgrp_t group,
1051 extern __u32 ext2fs_bg_free_inodes_count(ext2_filsys fs, dgrp_t group);
1052 extern void ext2fs_bg_free_inodes_count_set(ext2_filsys fs, dgrp_t group,
1054 extern __u32 ext2fs_bg_used_dirs_count(ext2_filsys fs, dgrp_t group);
1055 extern void ext2fs_bg_used_dirs_count_set(ext2_filsys fs, dgrp_t group,
1057 extern __u32 ext2fs_bg_itable_unused(ext2_filsys fs, dgrp_t group);
1058 extern void ext2fs_bg_itable_unused_set(ext2_filsys fs, dgrp_t group,
1060 extern __u16 ext2fs_bg_flags(ext2_filsys fs, dgrp_t group);
1061 extern void ext2fs_bg_flags_zap(ext2_filsys fs, dgrp_t group);
1062 extern int ext2fs_bg_flags_test(ext2_filsys fs, dgrp_t group, __u16 bg_flag);
1063 extern void ext2fs_bg_flags_set(ext2_filsys fs, dgrp_t group, __u16 bg_flags);
1064 extern void ext2fs_bg_flags_clear(ext2_filsys fs, dgrp_t group, __u16 bg_flags);
1065 extern __u16 ext2fs_bg_checksum(ext2_filsys fs, dgrp_t group);
1066 extern void ext2fs_bg_checksum_set(ext2_filsys fs, dgrp_t group, __u16 checksum);
1067 extern blk64_t ext2fs_file_acl_block(ext2_filsys fs,
1068 const struct ext2_inode *inode);
1069 extern void ext2fs_file_acl_block_set(ext2_filsys fs,
1070 struct ext2_inode *inode, blk64_t blk);
1071 extern errcode_t ext2fs_inode_size_set(ext2_filsys fs, struct ext2_inode *inode,
1075 extern errcode_t ext2fs_block_iterate(ext2_filsys fs,
1079 int (*func)(ext2_filsys fs,
1084 errcode_t ext2fs_block_iterate2(ext2_filsys fs,
1088 int (*func)(ext2_filsys fs,
1090 e2_blkcnt_t blockcnt,
1095 errcode_t ext2fs_block_iterate3(ext2_filsys fs,
1099 int (*func)(ext2_filsys fs,
1101 e2_blkcnt_t blockcnt,
1108 extern errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino,
1109 struct ext2_inode *inode,
1110 char *block_buf, int bmap_flags,
1111 blk_t block, blk_t *phys_blk);
1112 extern errcode_t ext2fs_bmap2(ext2_filsys fs, ext2_ino_t ino,
1113 struct ext2_inode *inode,
1114 char *block_buf, int bmap_flags, blk64_t block,
1115 int *ret_flags, blk64_t *phys_blk);
1116 errcode_t ext2fs_map_cluster_block(ext2_filsys fs, ext2_ino_t ino,
1117 struct ext2_inode *inode, blk64_t lblk,
1122 extern errcode_t ext2fs_move_blocks(ext2_filsys fs,
1123 ext2fs_block_bitmap reserve,
1124 ext2fs_block_bitmap alloc_map,
1129 extern errcode_t ext2fs_check_desc(ext2_filsys fs);
1132 extern errcode_t ext2fs_close(ext2_filsys fs);
1133 extern errcode_t ext2fs_close2(ext2_filsys fs, int flags);
1134 extern errcode_t ext2fs_close_free(ext2_filsys *fs);
1135 extern errcode_t ext2fs_flush(ext2_filsys fs);
1136 extern errcode_t ext2fs_flush2(ext2_filsys fs, int flags);
1137 extern int ext2fs_bg_has_super(ext2_filsys fs, dgrp_t group_block);
1138 extern errcode_t ext2fs_super_and_bgd_loc2(ext2_filsys fs,
1140 blk64_t *ret_super_blk,
1141 blk64_t *ret_old_desc_blk,
1142 blk64_t *ret_new_desc_blk,
1143 blk_t *ret_used_blks);
1144 extern int ext2fs_super_and_bgd_loc(ext2_filsys fs,
1146 blk_t *ret_super_blk,
1147 blk_t *ret_old_desc_blk,
1148 blk_t *ret_new_desc_blk,
1150 extern void ext2fs_update_dynamic_rev(ext2_filsys fs);
1153 extern __u32 ext2fs_crc32_be(__u32 crc, unsigned char const *p, size_t len);
1154 extern __u32 ext2fs_crc32c_le(__u32 crc, unsigned char const *p, size_t len);
1157 extern void ext2fs_init_csum_seed(ext2_filsys fs);
1158 extern errcode_t ext2fs_mmp_csum_set(ext2_filsys fs, struct mmp_struct *mmp);
1159 extern int ext2fs_mmp_csum_verify(ext2_filsys, struct mmp_struct *mmp);
1160 extern int ext2fs_verify_csum_type(ext2_filsys fs, struct ext2_super_block *sb);
1161 extern errcode_t ext2fs_superblock_csum_set(ext2_filsys fs,
1162 struct ext2_super_block *sb);
1163 extern int ext2fs_superblock_csum_verify(ext2_filsys fs,
1164 struct ext2_super_block *sb);
1165 extern errcode_t ext2fs_ext_attr_block_csum_set(ext2_filsys fs,
1166 ext2_ino_t inum, blk64_t block,
1167 struct ext2_ext_attr_header *hdr);
1168 extern int ext2fs_ext_attr_block_csum_verify(ext2_filsys fs, ext2_ino_t inum,
1170 struct ext2_ext_attr_header *hdr);
1171 #define EXT2_DIRENT_TAIL(block, blocksize) \
1172 ((struct ext2_dir_entry_tail *)(((char *)(block)) + \
1173 (blocksize) - sizeof(struct ext2_dir_entry_tail)))
1175 extern void ext2fs_initialize_dirent_tail(ext2_filsys fs,
1176 struct ext2_dir_entry_tail *t);
1177 extern int ext2fs_dirent_has_tail(ext2_filsys fs,
1178 struct ext2_dir_entry *dirent);
1179 extern int ext2fs_dirent_csum_verify(ext2_filsys fs, ext2_ino_t inum,
1180 struct ext2_dir_entry *dirent);
1181 extern int ext2fs_dir_block_csum_verify(ext2_filsys fs, ext2_ino_t inum,
1182 struct ext2_dir_entry *dirent);
1183 extern errcode_t ext2fs_dir_block_csum_set(ext2_filsys fs, ext2_ino_t inum,
1184 struct ext2_dir_entry *dirent);
1185 extern errcode_t ext2fs_get_dx_countlimit(ext2_filsys fs,
1186 struct ext2_dir_entry *dirent,
1187 struct ext2_dx_countlimit **cc,
1189 extern errcode_t ext2fs_dx_csum(ext2_filsys fs, ext2_ino_t inum,
1190 struct ext2_dir_entry *dirent,
1191 __u32 *crc, struct ext2_dx_tail **ret_t);
1192 extern errcode_t ext2fs_extent_block_csum_set(ext2_filsys fs,
1194 struct ext3_extent_header *eh);
1195 extern int ext2fs_extent_block_csum_verify(ext2_filsys fs,
1197 struct ext3_extent_header *eh);
1198 extern errcode_t ext2fs_block_bitmap_csum_set(ext2_filsys fs, dgrp_t group,
1199 char *bitmap, int size);
1200 extern int ext2fs_block_bitmap_csum_verify(ext2_filsys fs, dgrp_t group,
1201 char *bitmap, int size);
1202 extern errcode_t ext2fs_inode_bitmap_csum_set(ext2_filsys fs, dgrp_t group,
1203 char *bitmap, int size);
1204 extern int ext2fs_inode_bitmap_csum_verify(ext2_filsys fs, dgrp_t group,
1205 char *bitmap, int size);
1206 extern errcode_t ext2fs_inode_csum_set(ext2_filsys fs, ext2_ino_t inum,
1207 struct ext2_inode_large *inode);
1208 extern int ext2fs_inode_csum_verify(ext2_filsys fs, ext2_ino_t inum,
1209 struct ext2_inode_large *inode);
1210 extern void ext2fs_group_desc_csum_set(ext2_filsys fs, dgrp_t group);
1211 extern int ext2fs_group_desc_csum_verify(ext2_filsys fs, dgrp_t group);
1212 extern errcode_t ext2fs_set_gdt_csum(ext2_filsys fs);
1213 extern __u16 ext2fs_group_desc_csum(ext2_filsys fs, dgrp_t group);
1216 extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist);
1217 extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ext2_ino_t ino,
1218 blk_t blk, int blockcnt);
1219 extern errcode_t ext2fs_add_dir_block2(ext2_dblist dblist, ext2_ino_t ino,
1220 blk64_t blk, e2_blkcnt_t blockcnt);
1221 extern void ext2fs_dblist_sort(ext2_dblist dblist,
1222 EXT2_QSORT_TYPE (*sortfunc)(const void *,
1224 extern void ext2fs_dblist_sort2(ext2_dblist dblist,
1225 EXT2_QSORT_TYPE (*sortfunc)(const void *,
1227 extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist,
1228 int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info,
1231 extern errcode_t ext2fs_dblist_iterate2(ext2_dblist dblist,
1232 int (*func)(ext2_filsys fs, struct ext2_db_entry2 *db_info,
1235 extern errcode_t ext2fs_dblist_iterate3(ext2_dblist dblist,
1236 int (*func)(ext2_filsys fs, struct ext2_db_entry2 *db_info,
1238 unsigned long long start,
1239 unsigned long long count,
1241 extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ext2_ino_t ino,
1242 blk_t blk, int blockcnt);
1243 extern errcode_t ext2fs_set_dir_block2(ext2_dblist dblist, ext2_ino_t ino,
1244 blk64_t blk, e2_blkcnt_t blockcnt);
1245 extern errcode_t ext2fs_copy_dblist(ext2_dblist src,
1247 extern int ext2fs_dblist_count(ext2_dblist dblist);
1248 extern blk64_t ext2fs_dblist_count2(ext2_dblist dblist);
1249 extern errcode_t ext2fs_dblist_get_last(ext2_dblist dblist,
1250 struct ext2_db_entry **entry);
1251 extern errcode_t ext2fs_dblist_get_last2(ext2_dblist dblist,
1252 struct ext2_db_entry2 **entry);
1253 extern errcode_t ext2fs_dblist_drop_last(ext2_dblist dblist);
1257 ext2fs_dblist_dir_iterate(ext2_dblist dblist,
1260 int (*func)(ext2_ino_t dir,
1262 struct ext2_dir_entry *dirent,
1270 /* digest_encode.c */
1271 #define EXT2FS_DIGEST_SIZE EXT2FS_SHA256_LENGTH
1272 extern int ext2fs_digest_encode(const char *src, int len, char *dst);
1273 extern int ext2fs_digest_decode(const char *src, int len, char *dst);
1277 extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block,
1279 extern errcode_t ext2fs_read_dir_block2(ext2_filsys fs, blk_t block,
1280 void *buf, int flags);
1281 extern errcode_t ext2fs_read_dir_block3(ext2_filsys fs, blk64_t block,
1282 void *buf, int flags);
1283 extern errcode_t ext2fs_read_dir_block4(ext2_filsys fs, blk64_t block,
1284 void *buf, int flags, ext2_ino_t ino);
1285 extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block,
1287 extern errcode_t ext2fs_write_dir_block2(ext2_filsys fs, blk_t block,
1288 void *buf, int flags);
1289 extern errcode_t ext2fs_write_dir_block3(ext2_filsys fs, blk64_t block,
1290 void *buf, int flags);
1291 extern errcode_t ext2fs_write_dir_block4(ext2_filsys fs, blk64_t block,
1292 void *buf, int flags, ext2_ino_t ino);
1295 extern errcode_t ext2fs_dirhash(int version, const char *name, int len,
1297 ext2_dirhash_t *ret_hash,
1298 ext2_dirhash_t *ret_minor_hash);
1300 extern errcode_t ext2fs_dirhash2(int version, const char *name, int len,
1301 const struct ext2fs_nls_table *charset,
1304 ext2_dirhash_t *ret_hash,
1305 ext2_dirhash_t *ret_minor_hash);
1308 extern errcode_t ext2fs_get_rec_len(ext2_filsys fs,
1309 struct ext2_dir_entry *dirent,
1310 unsigned int *rec_len);
1311 extern errcode_t ext2fs_set_rec_len(ext2_filsys fs,
1313 struct ext2_dir_entry *dirent);
1314 extern errcode_t ext2fs_dir_iterate(ext2_filsys fs,
1318 int (*func)(struct ext2_dir_entry *dirent,
1324 extern errcode_t ext2fs_dir_iterate2(ext2_filsys fs,
1328 int (*func)(ext2_ino_t dir,
1330 struct ext2_dir_entry *dirent,
1338 extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest);
1341 extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir);
1344 extern __u32 ext2fs_ext_attr_hash_entry(struct ext2_ext_attr_entry *entry,
1346 extern __u32 ext2fs_ext_attr_hash_entry_signed(struct ext2_ext_attr_entry *entry,
1348 extern errcode_t ext2fs_ext_attr_hash_entry2(ext2_filsys fs,
1349 struct ext2_ext_attr_entry *entry,
1350 void *data, __u32 *hash);
1351 extern errcode_t ext2fs_ext_attr_hash_entry3(ext2_filsys fs,
1352 struct ext2_ext_attr_entry *entry,
1353 void *data, __u32 *hash,
1354 __u32 *signed_hash);
1355 extern errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf);
1356 extern errcode_t ext2fs_read_ext_attr2(ext2_filsys fs, blk64_t block,
1358 extern errcode_t ext2fs_read_ext_attr3(ext2_filsys fs, blk64_t block,
1359 void *buf, ext2_ino_t inum);
1360 extern errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block,
1362 extern errcode_t ext2fs_write_ext_attr2(ext2_filsys fs, blk64_t block,
1364 extern errcode_t ext2fs_write_ext_attr3(ext2_filsys fs, blk64_t block,
1365 void *buf, ext2_ino_t inum);
1366 extern errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk,
1368 int adjust, __u32 *newcount);
1369 extern errcode_t ext2fs_adjust_ea_refcount2(ext2_filsys fs, blk64_t blk,
1371 int adjust, __u32 *newcount);
1372 extern errcode_t ext2fs_adjust_ea_refcount3(ext2_filsys fs, blk64_t blk,
1374 int adjust, __u32 *newcount,
1376 errcode_t ext2fs_xattrs_write(struct ext2_xattr_handle *handle);
1377 errcode_t ext2fs_xattrs_read(struct ext2_xattr_handle *handle);
1378 errcode_t ext2fs_xattrs_read_inode(struct ext2_xattr_handle *handle,
1379 struct ext2_inode_large *inode);
1380 errcode_t ext2fs_xattrs_iterate(struct ext2_xattr_handle *h,
1381 int (*func)(char *name, char *value,
1382 size_t value_len, void *data),
1384 errcode_t ext2fs_xattr_get(struct ext2_xattr_handle *h, const char *key,
1385 void **value, size_t *value_len);
1386 errcode_t ext2fs_xattr_set(struct ext2_xattr_handle *handle,
1390 errcode_t ext2fs_xattr_remove(struct ext2_xattr_handle *handle,
1392 errcode_t ext2fs_xattrs_open(ext2_filsys fs, ext2_ino_t ino,
1393 struct ext2_xattr_handle **handle);
1394 errcode_t ext2fs_xattrs_close(struct ext2_xattr_handle **handle);
1395 errcode_t ext2fs_free_ext_attr(ext2_filsys fs, ext2_ino_t ino,
1396 struct ext2_inode_large *inode);
1397 errcode_t ext2fs_xattrs_count(struct ext2_xattr_handle *handle, size_t *count);
1398 errcode_t ext2fs_xattr_inode_max_size(ext2_filsys fs, ext2_ino_t ino,
1400 #define XATTR_HANDLE_FLAG_RAW 0x0001
1401 errcode_t ext2fs_xattrs_flags(struct ext2_xattr_handle *handle,
1402 unsigned int *new_flags, unsigned int *old_flags);
1403 extern void ext2fs_ext_attr_block_rehash(struct ext2_ext_attr_header *header,
1404 struct ext2_ext_attr_entry *end);
1405 extern __u32 ext2fs_get_ea_inode_hash(struct ext2_inode *inode);
1406 extern void ext2fs_set_ea_inode_hash(struct ext2_inode *inode, __u32 hash);
1407 extern __u64 ext2fs_get_ea_inode_ref(struct ext2_inode *inode);
1408 extern void ext2fs_set_ea_inode_ref(struct ext2_inode *inode, __u64 ref_count);
1411 extern errcode_t ext2fs_extent_header_verify(void *ptr, int size);
1412 extern errcode_t ext2fs_extent_open(ext2_filsys fs, ext2_ino_t ino,
1413 ext2_extent_handle_t *handle);
1414 extern errcode_t ext2fs_extent_open2(ext2_filsys fs, ext2_ino_t ino,
1415 struct ext2_inode *inode,
1416 ext2_extent_handle_t *ret_handle);
1417 extern void ext2fs_extent_free(ext2_extent_handle_t handle);
1418 extern errcode_t ext2fs_extent_get(ext2_extent_handle_t handle,
1419 int flags, struct ext2fs_extent *extent);
1420 extern errcode_t ext2fs_extent_node_split(ext2_extent_handle_t handle);
1421 extern errcode_t ext2fs_extent_replace(ext2_extent_handle_t handle, int flags,
1422 struct ext2fs_extent *extent);
1423 extern errcode_t ext2fs_extent_insert(ext2_extent_handle_t handle, int flags,
1424 struct ext2fs_extent *extent);
1425 extern errcode_t ext2fs_extent_set_bmap(ext2_extent_handle_t handle,
1426 blk64_t logical, blk64_t physical,
1428 extern errcode_t ext2fs_extent_delete(ext2_extent_handle_t handle, int flags);
1429 extern errcode_t ext2fs_extent_get_info(ext2_extent_handle_t handle,
1430 struct ext2_extent_info *info);
1431 extern errcode_t ext2fs_extent_goto(ext2_extent_handle_t handle,
1433 extern errcode_t ext2fs_extent_goto2(ext2_extent_handle_t handle,
1434 int leaf_level, blk64_t blk);
1435 extern errcode_t ext2fs_extent_fix_parents(ext2_extent_handle_t handle);
1436 extern size_t ext2fs_max_extent_depth(ext2_extent_handle_t handle);
1437 extern errcode_t ext2fs_fix_extents_checksums(ext2_filsys fs, ext2_ino_t ino,
1438 struct ext2_inode *inode);
1439 extern errcode_t ext2fs_count_blocks(ext2_filsys fs, ext2_ino_t ino,
1440 struct ext2_inode *inode, blk64_t *ret_count);
1441 extern errcode_t ext2fs_decode_extent(struct ext2fs_extent *to, void *from,
1445 #define EXT2_FALLOCATE_ZERO_BLOCKS (0x1)
1446 #define EXT2_FALLOCATE_FORCE_INIT (0x2)
1447 #define EXT2_FALLOCATE_FORCE_UNINIT (0x4)
1448 #define EXT2_FALLOCATE_INIT_BEYOND_EOF (0x8)
1449 #define EXT2_FALLOCATE_ALL_FLAGS (0xF)
1450 errcode_t ext2fs_fallocate(ext2_filsys fs, int flags, ext2_ino_t ino,
1451 struct ext2_inode *inode, blk64_t goal,
1452 blk64_t start, blk64_t len);
1455 extern errcode_t ext2fs_file_open2(ext2_filsys fs, ext2_ino_t ino,
1456 struct ext2_inode *inode,
1457 int flags, ext2_file_t *ret);
1458 extern errcode_t ext2fs_file_open(ext2_filsys fs, ext2_ino_t ino,
1459 int flags, ext2_file_t *ret);
1460 extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file);
1461 struct ext2_inode *ext2fs_file_get_inode(ext2_file_t file);
1462 extern ext2_ino_t ext2fs_file_get_inode_num(ext2_file_t file);
1463 extern errcode_t ext2fs_file_close(ext2_file_t file);
1464 extern errcode_t ext2fs_file_flush(ext2_file_t file);
1465 extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf,
1466 unsigned int wanted, unsigned int *got);
1467 extern errcode_t ext2fs_file_write(ext2_file_t file, const void *buf,
1468 unsigned int nbytes, unsigned int *written);
1469 extern errcode_t ext2fs_file_llseek(ext2_file_t file, __u64 offset,
1470 int whence, __u64 *ret_pos);
1471 extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset,
1472 int whence, ext2_off_t *ret_pos);
1473 errcode_t ext2fs_file_get_lsize(ext2_file_t file, __u64 *ret_size);
1474 extern ext2_off_t ext2fs_file_get_size(ext2_file_t file);
1475 extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size);
1476 extern errcode_t ext2fs_file_set_size2(ext2_file_t file, ext2_off64_t size);
1479 extern char *ext2fs_find_block_device(dev_t device);
1482 extern errcode_t ext2fs_sync_device(int fd, int flushb);
1485 extern void ext2fs_free(ext2_filsys fs);
1486 extern void ext2fs_free_dblist(ext2_dblist dblist);
1487 extern void ext2fs_badblocks_list_free(ext2_badblocks_list bb);
1488 extern void ext2fs_u32_list_free(ext2_u32_list bb);
1491 extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap);
1492 extern errcode_t ext2fs_make_generic_bitmap(errcode_t magic, ext2_filsys fs,
1493 __u32 start, __u32 end,
1495 const char *descr, char *init_map,
1496 ext2fs_generic_bitmap *ret);
1497 extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start,
1501 ext2fs_generic_bitmap *ret);
1502 extern errcode_t ext2fs_copy_generic_bitmap(ext2fs_generic_bitmap src,
1503 ext2fs_generic_bitmap *dest);
1504 extern void ext2fs_clear_generic_bitmap(ext2fs_generic_bitmap bitmap);
1505 extern errcode_t ext2fs_fudge_generic_bitmap_end(ext2fs_inode_bitmap bitmap,
1510 extern void ext2fs_set_generic_bitmap_padding(ext2fs_generic_bitmap map);
1511 extern errcode_t ext2fs_resize_generic_bitmap(errcode_t magic,
1514 ext2fs_generic_bitmap bmap);
1515 extern errcode_t ext2fs_compare_generic_bitmap(errcode_t magic, errcode_t neq,
1516 ext2fs_generic_bitmap bm1,
1517 ext2fs_generic_bitmap bm2);
1518 extern errcode_t ext2fs_get_generic_bitmap_range(ext2fs_generic_bitmap bmap,
1520 __u32 start, __u32 num,
1522 extern errcode_t ext2fs_set_generic_bitmap_range(ext2fs_generic_bitmap bmap,
1524 __u32 start, __u32 num,
1526 extern errcode_t ext2fs_find_first_zero_generic_bitmap(ext2fs_generic_bitmap bitmap,
1527 __u32 start, __u32 end,
1529 extern errcode_t ext2fs_find_first_set_generic_bitmap(ext2fs_generic_bitmap bitmap,
1530 __u32 start, __u32 end,
1533 /* gen_bitmap64.c */
1534 void ext2fs_free_generic_bmap(ext2fs_generic_bitmap bmap);
1535 errcode_t ext2fs_alloc_generic_bmap(ext2_filsys fs, errcode_t magic,
1536 int type, __u64 start, __u64 end,
1539 ext2fs_generic_bitmap *ret);
1540 errcode_t ext2fs_copy_generic_bmap(ext2fs_generic_bitmap src,
1541 ext2fs_generic_bitmap *dest);
1542 void ext2fs_clear_generic_bmap(ext2fs_generic_bitmap bitmap);
1543 errcode_t ext2fs_fudge_generic_bmap_end(ext2fs_generic_bitmap bitmap,
1545 __u64 end, __u64 *oend);
1546 void ext2fs_set_generic_bmap_padding(ext2fs_generic_bitmap bmap);
1547 errcode_t ext2fs_resize_generic_bmap(ext2fs_generic_bitmap bmap,
1549 __u64 new_real_end);
1550 errcode_t ext2fs_compare_generic_bmap(errcode_t neq,
1551 ext2fs_generic_bitmap bm1,
1552 ext2fs_generic_bitmap bm2);
1553 errcode_t ext2fs_get_generic_bmap_range(ext2fs_generic_bitmap bmap,
1554 __u64 start, unsigned int num,
1556 errcode_t ext2fs_set_generic_bmap_range(ext2fs_generic_bitmap bmap,
1557 __u64 start, unsigned int num,
1559 errcode_t ext2fs_convert_subcluster_bitmap(ext2_filsys fs,
1560 ext2fs_block_bitmap *bitmap);
1561 errcode_t ext2fs_count_used_clusters(ext2_filsys fs, blk64_t start,
1562 blk64_t end, blk64_t *out);
1563 errcode_t ext2fs_count_used_blocks(ext2_filsys fs, blk64_t start,
1564 blk64_t end, blk64_t *out);
1565 extern unsigned int ext2fs_list_backups(ext2_filsys fs, unsigned int *three,
1566 unsigned int *five, unsigned int *seven);
1569 extern char *ext2fs_safe_getenv(const char *arg);
1571 /* get_num_dirs.c */
1572 extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs);
1575 extern errcode_t ext2fs_get_device_size(const char *file, int blocksize,
1577 extern errcode_t ext2fs_get_device_size2(const char *file, int blocksize,
1578 blk64_t *retblocks);
1581 extern int ext2fs_get_dio_alignment(int fd);
1582 errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize);
1583 errcode_t ext2fs_get_device_phys_sectsize(const char *file, int *sectsize);
1586 errcode_t ext2fs_iblk_add_blocks(ext2_filsys fs, struct ext2_inode *inode,
1587 blk64_t num_blocks);
1588 errcode_t ext2fs_iblk_sub_blocks(ext2_filsys fs, struct ext2_inode *inode,
1589 blk64_t num_blocks);
1590 errcode_t ext2fs_iblk_set(ext2_filsys fs, struct ext2_inode *inode, blk64_t b);
1593 extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags);
1594 extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags);
1595 extern errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd, int flags);
1596 extern errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd, int flags);
1597 extern errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags);
1598 extern errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags);
1601 errcode_t ext2fs_read_ind_block(ext2_filsys fs, blk_t blk, void *buf);
1602 errcode_t ext2fs_write_ind_block(ext2_filsys fs, blk_t blk, void *buf);
1605 extern errcode_t ext2fs_initialize(const char *name, int flags,
1606 struct ext2_super_block *param,
1607 io_manager manager, ext2_filsys *ret_fs);
1608 extern errcode_t ext2fs_calculate_summary_stats(ext2_filsys fs, int super_only);
1611 extern void ext2fs_free_icount(ext2_icount_t icount);
1612 extern errcode_t ext2fs_create_icount_tdb(ext2_filsys fs, char *tdb_dir,
1613 int flags, ext2_icount_t *ret);
1614 extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags,
1616 ext2_icount_t hint, ext2_icount_t *ret);
1617 extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags,
1619 ext2_icount_t *ret);
1620 extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ext2_ino_t ino,
1622 extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ext2_ino_t ino,
1624 extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ext2_ino_t ino,
1626 extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ext2_ino_t ino,
1628 extern ext2_ino_t ext2fs_get_icount_size(ext2_icount_t icount);
1629 errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *);
1633 extern errcode_t ext2fs_get_memalign(unsigned long size,
1634 unsigned long align, void *ptr);
1637 extern errcode_t ext2fs_inline_data_init(ext2_filsys fs, ext2_ino_t ino);
1638 extern errcode_t ext2fs_inline_data_size(ext2_filsys fs, ext2_ino_t ino,
1640 extern errcode_t ext2fs_inline_data_get(ext2_filsys fs, ext2_ino_t ino,
1641 struct ext2_inode *inode,
1642 void *buf, size_t *size);
1643 extern errcode_t ext2fs_inline_data_set(ext2_filsys fs, ext2_ino_t ino,
1644 struct ext2_inode *inode,
1645 void *buf, size_t size);
1648 extern errcode_t ext2fs_create_inode_cache(ext2_filsys fs,
1649 unsigned int cache_size);
1650 extern void ext2fs_free_inode_cache(struct ext2_inode_cache *icache);
1651 extern errcode_t ext2fs_flush_icache(ext2_filsys fs);
1652 extern errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan,
1654 struct ext2_inode *inode,
1656 #define EXT2_INODE_SCAN_DEFAULT_BUFFER_BLOCKS 8
1657 extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks,
1658 ext2_inode_scan *ret_scan);
1659 extern void ext2fs_close_inode_scan(ext2_inode_scan scan);
1660 extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino,
1661 struct ext2_inode *inode);
1662 extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan,
1664 extern void ext2fs_set_inode_callback
1665 (ext2_inode_scan scan,
1666 errcode_t (*done_group)(ext2_filsys fs,
1667 ext2_inode_scan scan,
1670 void *done_group_data);
1671 extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags,
1673 extern errcode_t ext2fs_read_inode_full(ext2_filsys fs, ext2_ino_t ino,
1674 struct ext2_inode * inode,
1676 extern errcode_t ext2fs_read_inode(ext2_filsys fs, ext2_ino_t ino,
1677 struct ext2_inode * inode);
1678 extern errcode_t ext2fs_read_inode2(ext2_filsys fs, ext2_ino_t ino,
1679 struct ext2_inode * inode,
1680 int bufsize, int flags);
1681 extern errcode_t ext2fs_write_inode_full(ext2_filsys fs, ext2_ino_t ino,
1682 struct ext2_inode * inode,
1684 extern errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino,
1685 struct ext2_inode * inode);
1686 extern errcode_t ext2fs_write_inode2(ext2_filsys fs, ext2_ino_t ino,
1687 struct ext2_inode * inode,
1688 int bufsize, int flags);
1689 extern errcode_t ext2fs_write_new_inode(ext2_filsys fs, ext2_ino_t ino,
1690 struct ext2_inode * inode);
1691 extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks);
1692 extern errcode_t ext2fs_check_directory(ext2_filsys fs, ext2_ino_t ino);
1695 extern io_manager inode_io_manager;
1696 extern errcode_t ext2fs_inode_io_intern(ext2_filsys fs, ext2_ino_t ino,
1698 extern errcode_t ext2fs_inode_io_intern2(ext2_filsys fs, ext2_ino_t ino,
1699 struct ext2_inode *inode,
1703 extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags);
1704 extern errcode_t ext2fs_check_mount_point(const char *device, int *mount_flags,
1705 char *mtpt, int mtlen);
1709 * NOTE: This function removes from an inode the blocks "start", "end", and
1710 * every block in between.
1712 extern errcode_t ext2fs_punch(ext2_filsys fs, ext2_ino_t ino,
1713 struct ext2_inode *inode,
1714 char *block_buf, blk64_t start,
1718 extern errcode_t ext2fs_lookup(ext2_filsys fs, ext2_ino_t dir, const char *name,
1719 int namelen, char *buf, ext2_ino_t *inode);
1720 extern errcode_t ext2fs_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
1721 const char *name, ext2_ino_t *inode);
1722 errcode_t ext2fs_namei_follow(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
1723 const char *name, ext2_ino_t *inode);
1724 extern errcode_t ext2fs_follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
1725 ext2_ino_t inode, ext2_ino_t *res_inode);
1728 int ext2fs_native_flag(void);
1731 extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino,
1732 ext2_ino_t parent_ino, char **block);
1733 extern errcode_t ext2fs_new_dir_inline_data(ext2_filsys fs, ext2_ino_t dir_ino,
1734 ext2_ino_t parent_ino, __u32 *iblock);
1737 extern const struct ext2fs_nls_table *ext2fs_load_nls_table(int encoding);
1738 extern int ext2fs_check_encoded_name(const struct ext2fs_nls_table *table,
1739 char *s, size_t len, char **pos);
1740 extern int ext2fs_casefold_cmp(const struct ext2fs_nls_table *table,
1741 const unsigned char *str1, size_t len1,
1742 const unsigned char *str2, size_t len2);
1745 extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum,
1749 struct ext2fs_journal_params {
1750 blk_t num_journal_blocks;
1751 blk_t num_fc_blocks;
1753 extern errcode_t ext2fs_get_journal_params(
1754 struct ext2fs_journal_params *params, ext2_filsys fs);
1755 extern errcode_t ext2fs_zero_blocks(ext2_filsys fs, blk_t blk, int num,
1756 blk_t *ret_blk, int *ret_count);
1757 extern errcode_t ext2fs_zero_blocks2(ext2_filsys fs, blk64_t blk, int num,
1758 blk64_t *ret_blk, int *ret_count);
1759 extern errcode_t ext2fs_create_journal_superblock(ext2_filsys fs,
1760 __u32 num_blocks, int flags,
1762 extern errcode_t ext2fs_create_journal_superblock2(ext2_filsys fs,
1763 struct ext2fs_journal_params *params,
1764 int flags, char **ret_jsb);
1765 extern errcode_t ext2fs_add_journal_device(ext2_filsys fs,
1766 ext2_filsys journal_dev);
1767 extern errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t num_blocks,
1769 extern errcode_t ext2fs_add_journal_inode2(ext2_filsys fs, blk_t num_blocks,
1770 blk64_t goal, int flags);
1771 extern errcode_t ext2fs_add_journal_inode3(ext2_filsys fs,
1772 struct ext2fs_journal_params *params,
1773 blk64_t goal, int flags);
1774 extern int ext2fs_default_journal_size(__u64 num_blocks);
1775 extern int ext2fs_journal_sb_start(int blocksize);
1778 extern errcode_t ext2fs_open(const char *name, int flags, int superblock,
1779 unsigned int block_size, io_manager manager,
1780 ext2_filsys *ret_fs);
1781 extern errcode_t ext2fs_open2(const char *name, const char *io_options,
1782 int flags, int superblock,
1783 unsigned int block_size, io_manager manager,
1784 ext2_filsys *ret_fs);
1786 * The dgrp_t argument to these two functions is not actually a group number
1787 * but a block number offset within a group table! Convert with the formula
1788 * (group_number / groups_per_block).
1790 extern blk64_t ext2fs_descriptor_block_loc2(ext2_filsys fs,
1791 blk64_t group_block, dgrp_t i);
1792 extern blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block,
1794 errcode_t ext2fs_get_data_io(ext2_filsys fs, io_channel *old_io);
1795 errcode_t ext2fs_set_data_io(ext2_filsys fs, io_channel new_io);
1796 errcode_t ext2fs_rewrite_to_io(ext2_filsys fs, io_channel new_io);
1799 extern errcode_t ext2fs_create_orphan_file(ext2_filsys fs, blk_t num_blocks);
1800 extern errcode_t ext2fs_truncate_orphan_file(ext2_filsys fs);
1801 extern e2_blkcnt_t ext2fs_default_orphan_file_blocks(ext2_filsys fs);
1802 extern __u32 ext2fs_do_orphan_file_block_csum(ext2_filsys fs, ext2_ino_t ino,
1803 __u32 gen, blk64_t blk,
1805 extern errcode_t ext2fs_orphan_file_block_csum_set(ext2_filsys fs,
1806 ext2_ino_t ino, blk64_t blk,
1808 extern int ext2fs_orphan_file_block_csum_verify(ext2_filsys fs, ext2_ino_t ino,
1809 blk64_t blk, char *buf);
1811 /* get_pathname.c */
1812 extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino,
1816 #define EXT2FS_UNLINK_FORCE 0x1 /* Forcefully unlink even if
1817 * the inode number doesn't
1820 errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name,
1821 ext2_ino_t ino, int flags);
1822 errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir, const char *name,
1823 ext2_ino_t ino, int flags);
1826 errcode_t ext2fs_symlink(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t ino,
1827 const char *name, const char *target);
1828 int ext2fs_is_fast_symlink(struct ext2_inode *inode);
1831 errcode_t ext2fs_mmp_read(ext2_filsys fs, blk64_t mmp_blk, void *buf);
1832 errcode_t ext2fs_mmp_write(ext2_filsys fs, blk64_t mmp_blk, void *buf);
1833 errcode_t ext2fs_mmp_clear(ext2_filsys fs);
1834 errcode_t ext2fs_mmp_init(ext2_filsys fs);
1835 errcode_t ext2fs_mmp_start(ext2_filsys fs);
1836 errcode_t ext2fs_mmp_update(ext2_filsys fs);
1837 errcode_t ext2fs_mmp_update2(ext2_filsys fs, int immediately);
1838 errcode_t ext2fs_mmp_stop(ext2_filsys fs);
1839 unsigned ext2fs_mmp_new_seq(void);
1842 extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs,
1843 ext2_badblocks_list *bb_list);
1845 /* read_bb_file.c */
1846 extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f,
1847 ext2_badblocks_list *bb_list,
1849 void (*invalid)(ext2_filsys fs,
1853 extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f,
1854 ext2_badblocks_list *bb_list,
1855 void (*invalid)(ext2_filsys fs,
1859 extern errcode_t ext2fs_create_resize_inode(ext2_filsys fs);
1862 extern errcode_t ext2fs_rw_bitmaps(ext2_filsys fs, int flags, int num_threads);
1863 extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs);
1864 extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs);
1865 extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs);
1866 extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs);
1867 extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs);
1868 extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs);
1871 #define EXT2FS_SHA256_LENGTH 32
1873 extern void ext2fs_sha256(const unsigned char *in, unsigned long in_size,
1874 unsigned char out[EXT2FS_SHA256_LENGTH]);
1878 #define EXT2FS_SHA512_LENGTH 64
1879 extern void ext2fs_sha512(const unsigned char *in, unsigned long in_size,
1880 unsigned char out[EXT2FS_SHA512_LENGTH]);
1883 extern errcode_t ext2fs_dirent_swab_in2(ext2_filsys fs, char *buf, size_t size,
1885 extern errcode_t ext2fs_dirent_swab_in(ext2_filsys fs, char *buf, int flags);
1886 extern errcode_t ext2fs_dirent_swab_out2(ext2_filsys fs, char *buf, size_t size,
1888 extern errcode_t ext2fs_dirent_swab_out(ext2_filsys fs, char *buf, int flags);
1889 extern void ext2fs_swap_ext_attr(char *to, char *from, int bufsize,
1891 extern void ext2fs_swap_ext_attr_header(struct ext2_ext_attr_header *to_header,
1892 struct ext2_ext_attr_header *from_hdr);
1893 extern void ext2fs_swap_ext_attr_entry(struct ext2_ext_attr_entry *to_entry,
1894 struct ext2_ext_attr_entry *from_entry);
1895 extern void ext2fs_swap_super(struct ext2_super_block * super);
1896 extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp);
1897 extern void ext2fs_swap_group_desc2(ext2_filsys, struct ext2_group_desc *gdp);
1898 extern void ext2fs_swap_inode_full(ext2_filsys fs, struct ext2_inode_large *t,
1899 struct ext2_inode_large *f, int hostorder,
1901 extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t,
1902 struct ext2_inode *f, int hostorder);
1903 extern void ext2fs_swap_mmp(struct mmp_struct *mmp);
1906 extern int ext2fs_open_file(const char *pathname, int flags, mode_t mode);
1907 extern int ext2fs_stat(const char *path, ext2fs_struct_stat *buf);
1908 extern int ext2fs_fstat(int fd, ext2fs_struct_stat *buf);
1911 extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode);
1912 extern int ext2fs_inode_has_valid_blocks2(ext2_filsys fs,
1913 struct ext2_inode *inode);
1916 extern int ext2fs_parse_version_string(const char *ver_string);
1917 extern int ext2fs_get_library_version(const char **ver_string,
1918 const char **date_string);
1920 /* write_bb_file.c */
1921 extern errcode_t ext2fs_write_bb_FILE(ext2_badblocks_list bb_list,
1926 /* inline functions */
1927 #ifdef NO_INLINE_FUNCS
1928 extern errcode_t ext2fs_get_mem(unsigned long size, void *ptr);
1929 extern errcode_t ext2fs_get_memzero(unsigned long size, void *ptr);
1930 extern errcode_t ext2fs_get_array(unsigned long count,
1931 unsigned long size, void *ptr);
1932 extern errcode_t ext2fs_get_arrayzero(unsigned long count,
1933 unsigned long size, void *ptr);
1934 extern errcode_t ext2fs_free_mem(void *ptr);
1935 extern errcode_t ext2fs_resize_mem(unsigned long old_size,
1936 unsigned long size, void *ptr);
1937 extern errcode_t ext2fs_resize_array(unsigned long old_count, unsigned long count,
1938 unsigned long size, void *ptr);
1939 extern void ext2fs_mark_super_dirty(ext2_filsys fs);
1940 extern void ext2fs_mark_changed(ext2_filsys fs);
1941 extern int ext2fs_test_changed(ext2_filsys fs);
1942 extern void ext2fs_mark_valid(ext2_filsys fs);
1943 extern void ext2fs_unmark_valid(ext2_filsys fs);
1944 extern int ext2fs_test_valid(ext2_filsys fs);
1945 extern void ext2fs_mark_ib_dirty(ext2_filsys fs);
1946 extern void ext2fs_mark_bb_dirty(ext2_filsys fs);
1947 extern int ext2fs_test_ib_dirty(ext2_filsys fs);
1948 extern int ext2fs_test_bb_dirty(ext2_filsys fs);
1949 extern dgrp_t ext2fs_group_of_blk(ext2_filsys fs, blk_t blk);
1950 extern dgrp_t ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino);
1951 extern blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group);
1952 extern blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group);
1953 extern blk_t ext2fs_inode_data_blocks(ext2_filsys fs,
1954 struct ext2_inode *inode);
1955 extern int ext2fs_htree_intnode_maxrecs(ext2_filsys fs, int blocks);
1956 extern unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b);
1957 extern __u64 ext2fs_div64_ceil(__u64 a, __u64 b);
1958 extern int ext2fs_dirent_name_len(const struct ext2_dir_entry *entry);
1959 extern void ext2fs_dirent_set_name_len(struct ext2_dir_entry *entry, int len);
1960 extern int ext2fs_dirent_file_type(const struct ext2_dir_entry *entry);
1961 extern void ext2fs_dirent_set_file_type(struct ext2_dir_entry *entry, int type);
1962 extern struct ext2_inode *ext2fs_inode(struct ext2_inode_large * large_inode);
1963 extern const struct ext2_inode *ext2fs_const_inode(const struct ext2_inode_large * large_inode);
1964 extern int ext2fs_inodes_per_orphan_block(ext2_filsys fs);
1965 extern struct ext4_orphan_block_tail *ext2fs_orphan_block_tail(ext2_filsys fs,
1970 * The actual inlined functions definitions themselves...
1972 * If NO_INLINE_FUNCS is defined, then we won't try to do inline
1975 #if (defined(INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS))
1976 #ifdef INCLUDE_INLINE_FUNCS
1977 #define _INLINE_ extern
1979 #if (__STDC_VERSION__ >= 199901L)
1980 #define _INLINE_ inline
1983 #define _INLINE_ extern __inline__
1984 #else /* For Watcom C */
1985 #define _INLINE_ extern inline
1986 #endif /* __GNUC__ */
1987 #endif /* __STDC_VERSION__ >= 199901L */
1990 #ifndef EXT2_CUSTOM_MEMORY_ROUTINES
1993 * Allocate memory. The 'ptr' arg must point to a pointer.
1995 _INLINE_ errcode_t ext2fs_get_mem(unsigned long size, void *ptr)
2001 return EXT2_ET_NO_MEMORY;
2002 memcpy(ptr, &pp, sizeof (pp));
2006 _INLINE_ errcode_t ext2fs_get_memzero(unsigned long size, void *ptr)
2012 return EXT2_ET_NO_MEMORY;
2013 memset(pp, 0, size);
2014 memcpy(ptr, &pp, sizeof(pp));
2018 _INLINE_ errcode_t ext2fs_get_array(unsigned long count, unsigned long size,
2021 if (count && (~0UL)/count < size)
2022 return EXT2_ET_NO_MEMORY;
2023 return ext2fs_get_mem(count*size, ptr);
2026 _INLINE_ errcode_t ext2fs_get_arrayzero(unsigned long count,
2027 unsigned long size, void *ptr)
2029 if (count && (~0UL)/count < size)
2030 return EXT2_ET_NO_MEMORY;
2032 return ext2fs_get_memzero((size_t)count * size, ptr);
2036 * Free memory. The 'ptr' arg must point to a pointer.
2038 _INLINE_ errcode_t ext2fs_free_mem(void *ptr)
2042 memcpy(&p, ptr, sizeof(p));
2045 memcpy(ptr, &p, sizeof(p));
2050 * Resize memory. The 'ptr' arg must point to a pointer.
2052 _INLINE_ errcode_t ext2fs_resize_mem(unsigned long EXT2FS_ATTR((unused)) old_size,
2053 unsigned long size, void *ptr)
2057 /* Use "memcpy" for pointer assignments here to avoid problems
2058 * with C99 strict type aliasing rules. */
2059 memcpy(&p, ptr, sizeof(p));
2060 p = realloc(p, size);
2062 return EXT2_ET_NO_MEMORY;
2063 memcpy(ptr, &p, sizeof(p));
2068 * Resize array. The 'ptr' arg must point to a pointer.
2070 _INLINE_ errcode_t ext2fs_resize_array(unsigned long size,
2071 unsigned long old_count,
2072 unsigned long count, void *ptr)
2074 unsigned long old_size;
2077 if (count && (~0UL)/count < size)
2078 return EXT2_ET_NO_MEMORY;
2081 old_size = size * old_count;
2082 retval = ext2fs_resize_mem(old_size, size, ptr);
2086 if (size > old_size) {
2089 memcpy(&p, ptr, sizeof(p));
2090 memset((char *)p + old_size, 0, size - old_size);
2091 memcpy(ptr, &p, sizeof(p));
2096 #endif /* Custom memory routines */
2099 * Mark a filesystem superblock as dirty
2101 _INLINE_ void ext2fs_mark_super_dirty(ext2_filsys fs)
2103 fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_CHANGED;
2107 * Mark a filesystem as changed
2109 _INLINE_ void ext2fs_mark_changed(ext2_filsys fs)
2111 fs->flags |= EXT2_FLAG_CHANGED;
2115 * Check to see if a filesystem has changed
2117 _INLINE_ int ext2fs_test_changed(ext2_filsys fs)
2119 return (fs->flags & EXT2_FLAG_CHANGED);
2123 * Mark a filesystem as valid
2125 _INLINE_ void ext2fs_mark_valid(ext2_filsys fs)
2127 fs->flags |= EXT2_FLAG_VALID;
2131 * Mark a filesystem as NOT valid
2133 _INLINE_ void ext2fs_unmark_valid(ext2_filsys fs)
2135 fs->flags &= ~EXT2_FLAG_VALID;
2139 * Check to see if a filesystem is valid
2141 _INLINE_ int ext2fs_test_valid(ext2_filsys fs)
2143 return (fs->flags & EXT2_FLAG_VALID);
2147 * Mark the inode bitmap as dirty
2149 _INLINE_ void ext2fs_mark_ib_dirty(ext2_filsys fs)
2151 fs->flags |= EXT2_FLAG_IB_DIRTY | EXT2_FLAG_CHANGED;
2155 * Mark the block bitmap as dirty
2157 _INLINE_ void ext2fs_mark_bb_dirty(ext2_filsys fs)
2159 fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_CHANGED;
2163 * Check to see if a filesystem's inode bitmap is dirty
2165 _INLINE_ int ext2fs_test_ib_dirty(ext2_filsys fs)
2167 return (fs->flags & EXT2_FLAG_IB_DIRTY);
2171 * Check to see if a filesystem's block bitmap is dirty
2173 _INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs)
2175 return (fs->flags & EXT2_FLAG_BB_DIRTY);
2179 * Return the group # of a block
2181 _INLINE_ dgrp_t ext2fs_group_of_blk(ext2_filsys fs, blk_t blk)
2183 return ext2fs_group_of_blk2(fs, blk);
2186 * Return the group # of an inode number
2188 _INLINE_ dgrp_t ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino)
2190 return (ino - 1) / fs->super->s_inodes_per_group;
2194 * Return the first block (inclusive) in a group
2196 _INLINE_ blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group)
2198 return (blk_t) ext2fs_group_first_block2(fs, group);
2202 * Return the last block (inclusive) in a group
2204 _INLINE_ blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group)
2206 return (blk_t) ext2fs_group_last_block2(fs, group);
2209 _INLINE_ blk_t ext2fs_inode_data_blocks(ext2_filsys fs,
2210 struct ext2_inode *inode)
2212 return (blk_t) ext2fs_inode_data_blocks2(fs, inode);
2215 _INLINE_ int ext2fs_htree_intnode_maxrecs(ext2_filsys fs, int blocks)
2219 if ((EXT2_SB(fs->super)->s_feature_ro_compat &
2220 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM) != 0)
2221 csum_size = sizeof(struct ext2_dx_tail);
2222 return blocks * ((fs->blocksize - (8 + csum_size)) /
2223 sizeof(struct ext2_dx_entry));
2227 * This is an efficient, overflow safe way of calculating ceil((1.0 * a) / b)
2229 _INLINE_ unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b)
2233 return ((a - 1) / b) + 1;
2236 _INLINE_ __u64 ext2fs_div64_ceil(__u64 a, __u64 b)
2240 return ((a - 1) / b) + 1;
2243 _INLINE_ int ext2fs_dirent_name_len(const struct ext2_dir_entry *entry)
2245 return entry->name_len & 0xff;
2248 _INLINE_ void ext2fs_dirent_set_name_len(struct ext2_dir_entry *entry, int len)
2250 entry->name_len = (entry->name_len & 0xff00) | (len & 0xff);
2253 _INLINE_ int ext2fs_dirent_file_type(const struct ext2_dir_entry *entry)
2255 return entry->name_len >> 8;
2258 _INLINE_ void ext2fs_dirent_set_file_type(struct ext2_dir_entry *entry, int type)
2260 entry->name_len = (entry->name_len & 0xff) | (type << 8);
2263 _INLINE_ struct ext2_inode *ext2fs_inode(struct ext2_inode_large * large_inode)
2265 /* It is always safe to convert large inode to a small inode */
2266 return (struct ext2_inode *) large_inode;
2269 _INLINE_ const struct ext2_inode *
2270 ext2fs_const_inode(const struct ext2_inode_large * large_inode)
2272 /* It is always safe to convert large inode to a small inode */
2273 return (const struct ext2_inode *) large_inode;
2276 _INLINE_ int ext2fs_inodes_per_orphan_block(ext2_filsys fs)
2278 return (fs->blocksize - sizeof(struct ext4_orphan_block_tail)) /
2282 _INLINE_ struct ext4_orphan_block_tail *
2283 ext2fs_orphan_block_tail(ext2_filsys fs, char *buf)
2285 return (struct ext4_orphan_block_tail *)(buf + fs->blocksize -
2286 sizeof(struct ext4_orphan_block_tail));
2292 /* htree levels for ext4 */
2293 #define EXT4_HTREE_LEVEL_COMPAT 2
2294 #define EXT4_HTREE_LEVEL 3
2296 static inline unsigned int ext2_dir_htree_level(ext2_filsys fs)
2298 if (ext2fs_has_feature_largedir(fs->super))
2299 return EXT4_HTREE_LEVEL;
2301 return EXT4_HTREE_LEVEL_COMPAT;
2308 #endif /* _EXT2FS_EXT2FS_H */