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;
277 __u16 fs_num_threads;
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 * Flags for returning status of ext2fs_expand_extra_isize()
629 #define EXT2_EXPAND_EISIZE_UNSAFE 0x0001
630 #define EXT2_EXPAND_EISIZE_NEW_BLOCK 0x0002
631 #define EXT2_EXPAND_EISIZE_NOSPC 0x0004
634 * Features supported by this version of the library
636 #define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\
637 EXT2_FEATURE_COMPAT_IMAGIC_INODES|\
638 EXT3_FEATURE_COMPAT_HAS_JOURNAL|\
639 EXT2_FEATURE_COMPAT_RESIZE_INODE|\
640 EXT2_FEATURE_COMPAT_DIR_INDEX|\
641 EXT2_FEATURE_COMPAT_EXT_ATTR|\
642 EXT4_FEATURE_COMPAT_SPARSE_SUPER2|\
643 EXT4_FEATURE_COMPAT_FAST_COMMIT|\
644 EXT4_FEATURE_COMPAT_STABLE_INODES|\
645 EXT4_FEATURE_COMPAT_ORPHAN_FILE)
648 #define EXT4_LIB_INCOMPAT_MMP EXT4_FEATURE_INCOMPAT_MMP
650 #define EXT4_LIB_INCOMPAT_MMP (0)
653 #define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\
654 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\
655 EXT2_FEATURE_INCOMPAT_META_BG|\
656 EXT3_FEATURE_INCOMPAT_RECOVER|\
657 EXT3_FEATURE_INCOMPAT_EXTENTS|\
658 EXT4_FEATURE_INCOMPAT_FLEX_BG|\
659 EXT4_FEATURE_INCOMPAT_EA_INODE|\
660 EXT4_FEATURE_INCOMPAT_DIRDATA|\
661 EXT4_LIB_INCOMPAT_MMP|\
662 EXT4_FEATURE_INCOMPAT_64BIT|\
663 EXT4_FEATURE_INCOMPAT_INLINE_DATA|\
664 EXT4_FEATURE_INCOMPAT_ENCRYPT|\
665 EXT4_FEATURE_INCOMPAT_CASEFOLD|\
666 EXT4_FEATURE_INCOMPAT_CSUM_SEED|\
667 EXT4_FEATURE_INCOMPAT_LARGEDIR)
669 #define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\
670 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|\
671 EXT2_FEATURE_RO_COMPAT_LARGE_FILE|\
672 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|\
673 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|\
674 EXT4_FEATURE_RO_COMPAT_GDT_CSUM|\
675 EXT4_FEATURE_RO_COMPAT_BIGALLOC|\
676 EXT4_FEATURE_RO_COMPAT_QUOTA|\
677 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM|\
678 EXT4_FEATURE_RO_COMPAT_READONLY |\
679 EXT4_FEATURE_RO_COMPAT_PROJECT |\
680 EXT4_FEATURE_RO_COMPAT_SHARED_BLOCKS |\
681 EXT4_FEATURE_RO_COMPAT_VERITY |\
682 EXT4_FEATURE_RO_COMPAT_ORPHAN_PRESENT)
685 * These features are only allowed if EXT2_FLAG_SOFTSUPP_FEATURES is passed
688 #define EXT2_LIB_SOFTSUPP_INCOMPAT (0)
689 #define EXT2_LIB_SOFTSUPP_RO_COMPAT (EXT4_FEATURE_RO_COMPAT_REPLICA)
692 /* Translate a block number to a cluster number */
693 #define EXT2FS_CLUSTER_RATIO(fs) (1 << (fs)->cluster_ratio_bits)
694 #define EXT2FS_CLUSTER_MASK(fs) (EXT2FS_CLUSTER_RATIO(fs) - 1)
695 #define EXT2FS_B2C(fs, blk) ((blk) >> (fs)->cluster_ratio_bits)
696 /* Translate a cluster number to a block number */
697 #define EXT2FS_C2B(fs, cluster) ((cluster) << (fs)->cluster_ratio_bits)
698 /* Translate # of blks to # of clusters */
699 #define EXT2FS_NUM_B2C(fs, blks) (((blks) + EXT2FS_CLUSTER_MASK(fs)) >> \
700 (fs)->cluster_ratio_bits)
702 #if defined(HAVE_FSTAT64) && !defined(__OSX_AVAILABLE_BUT_DEPRECATED)
703 typedef struct stat64 ext2fs_struct_stat;
705 typedef struct stat ext2fs_struct_stat;
709 * For ext2fs_close2() and ext2fs_flush2(), this flag allows you to
710 * avoid the fsync call.
712 #define EXT2_FLAG_FLUSH_NO_SYNC 1
715 * Modify and iterate extended attributes
717 struct ext2_xattr_handle;
718 #define XATTR_ABORT 1
719 #define XATTR_CHANGED 2
722 * flags for ext2fs_rw_bitmaps()
724 #define EXT2FS_BITMAPS_WRITE 0x0001
725 #define EXT2FS_BITMAPS_BLOCK 0x0002
726 #define EXT2FS_BITMAPS_INODE 0x0004
727 #define EXT2FS_BITMAPS_VALID_FLAGS 0x0007
730 * function prototypes
732 static inline int ext2fs_has_group_desc_csum(ext2_filsys fs)
734 return ext2fs_has_feature_metadata_csum(fs->super) ||
735 ext2fs_has_feature_gdt_csum(fs->super);
738 /* The LARGE_FILE feature should be set if we have stored files 2GB+ in size */
739 static inline int ext2fs_needs_large_file_feature(unsigned long long file_size)
741 return file_size >= 0x80000000ULL;
745 extern void ext2fs_clear_block_uninit(ext2_filsys fs, dgrp_t group);
746 extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode,
747 ext2fs_inode_bitmap map, ext2_ino_t *ret);
748 extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal,
749 ext2fs_block_bitmap map, blk_t *ret);
750 extern errcode_t ext2fs_new_block2(ext2_filsys fs, blk64_t goal,
751 ext2fs_block_bitmap map, blk64_t *ret);
752 extern errcode_t ext2fs_new_block3(ext2_filsys fs, blk64_t goal,
753 ext2fs_block_bitmap map, blk64_t *ret,
754 struct blk_alloc_ctx *ctx);
755 extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start,
756 blk_t finish, int num,
757 ext2fs_block_bitmap map,
759 extern errcode_t ext2fs_get_free_blocks2(ext2_filsys fs, blk64_t start,
760 blk64_t finish, int num,
761 ext2fs_block_bitmap map,
763 extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal,
764 char *block_buf, blk_t *ret);
765 extern errcode_t ext2fs_alloc_block2(ext2_filsys fs, blk64_t goal,
766 char *block_buf, blk64_t *ret);
767 extern errcode_t ext2fs_alloc_block3(ext2_filsys fs, blk64_t goal,
768 char *block_buf, blk64_t *ret,
769 struct blk_alloc_ctx *ctx);
771 extern void ext2fs_set_alloc_block_callback(ext2_filsys fs,
772 errcode_t (*func)(ext2_filsys fs,
775 errcode_t (**old)(ext2_filsys fs,
778 blk64_t ext2fs_find_inode_goal(ext2_filsys fs, ext2_ino_t ino,
779 struct ext2_inode *inode, blk64_t lblk);
780 extern void ext2fs_set_new_range_callback(ext2_filsys fs,
781 errcode_t (*func)(ext2_filsys fs, int flags, blk64_t goal,
782 blk64_t len, blk64_t *pblk, blk64_t *plen),
783 errcode_t (**old)(ext2_filsys fs, int flags, blk64_t goal,
784 blk64_t len, blk64_t *pblk, blk64_t *plen));
785 extern void ext2fs_set_block_alloc_stats_range_callback(ext2_filsys fs,
786 void (*func)(ext2_filsys fs, blk64_t blk,
787 blk_t num, int inuse),
788 void (**old)(ext2_filsys fs, blk64_t blk,
789 blk_t num, int inuse));
790 #define EXT2_NEWRANGE_FIXED_GOAL (0x1)
791 #define EXT2_NEWRANGE_MIN_LENGTH (0x2)
792 #define EXT2_NEWRANGE_ALL_FLAGS (0x3)
793 errcode_t ext2fs_new_range(ext2_filsys fs, int flags, blk64_t goal,
794 blk64_t len, ext2fs_block_bitmap map, blk64_t *pblk,
796 #define EXT2_ALLOCRANGE_FIXED_GOAL (0x1)
797 #define EXT2_ALLOCRANGE_ZERO_BLOCKS (0x2)
798 #define EXT2_ALLOCRANGE_ALL_FLAGS (0x3)
799 errcode_t ext2fs_alloc_range(ext2_filsys fs, int flags, blk64_t goal,
800 blk_t len, blk64_t *ret);
803 extern int ext2fs_reserve_super_and_bgd(ext2_filsys fs,
805 ext2fs_block_bitmap bmap);
806 extern errcode_t ext2fs_reserve_super_and_bgd2(ext2_filsys fs,
808 ext2fs_block_bitmap bmap,
810 extern void ext2fs_set_block_alloc_stats_callback(ext2_filsys fs,
811 void (*func)(ext2_filsys fs,
814 void (**old)(ext2_filsys fs,
819 void ext2fs_inode_alloc_stats(ext2_filsys fs, ext2_ino_t ino, int inuse);
820 void ext2fs_inode_alloc_stats2(ext2_filsys fs, ext2_ino_t ino,
821 int inuse, int isdir);
822 void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse);
823 void ext2fs_block_alloc_stats2(ext2_filsys fs, blk64_t blk, int inuse);
824 void ext2fs_block_alloc_stats_range(ext2_filsys fs, blk64_t blk,
825 blk_t num, int inuse);
828 extern errcode_t ext2fs_allocate_tables(ext2_filsys fs);
829 extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group,
830 ext2fs_block_bitmap bmap);
833 extern errcode_t ext2fs_u32_list_create(ext2_u32_list *ret, int size);
834 extern errcode_t ext2fs_u32_list_add(ext2_u32_list bb, __u32 blk);
835 extern int ext2fs_u32_list_find(ext2_u32_list bb, __u32 blk);
836 extern int ext2fs_u32_list_test(ext2_u32_list bb, blk_t blk);
837 extern errcode_t ext2fs_u32_list_iterate_begin(ext2_u32_list bb,
838 ext2_u32_iterate *ret);
839 extern int ext2fs_u32_list_iterate(ext2_u32_iterate iter, blk_t *blk);
840 extern void ext2fs_u32_list_iterate_end(ext2_u32_iterate iter);
841 extern errcode_t ext2fs_u32_copy(ext2_u32_list src, ext2_u32_list *dest);
842 extern int ext2fs_u32_list_equal(ext2_u32_list bb1, ext2_u32_list bb2);
844 extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret,
846 extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb,
848 extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb,
850 extern int ext2fs_u32_list_del(ext2_u32_list bb, __u32 blk);
851 extern void ext2fs_badblocks_list_del(ext2_u32_list bb, __u32 blk);
853 ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb,
854 ext2_badblocks_iterate *ret);
855 extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter,
857 extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter);
858 extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src,
859 ext2_badblocks_list *dest);
860 extern errcode_t ext2fs_badblocks_merge(ext2_badblocks_list src,
861 ext2_badblocks_list dest);
862 extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1,
863 ext2_badblocks_list bb2);
864 extern int ext2fs_u32_list_count(ext2_u32_list bb);
867 extern errcode_t badblocks_list_create(badblocks_list *ret, int size);
868 extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk);
869 extern int badblocks_list_test(badblocks_list bb, blk_t blk);
870 extern errcode_t badblocks_list_iterate_begin(badblocks_list bb,
871 badblocks_iterate *ret);
872 extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk);
873 extern void badblocks_list_iterate_end(badblocks_iterate iter);
874 extern void badblocks_list_free(badblocks_list bb);
877 extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs,
878 ext2_badblocks_list bb_list);
881 extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap);
882 extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap);
883 extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src,
884 ext2fs_generic_bitmap *dest);
885 errcode_t ext2fs_merge_bitmap(ext2fs_generic_bitmap src,
886 ext2fs_generic_bitmap dest,
887 ext2fs_generic_bitmap dup,
888 ext2fs_generic_bitmap dup_allowed);
889 extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs,
891 ext2fs_block_bitmap *ret);
892 extern errcode_t ext2fs_allocate_subcluster_bitmap(ext2_filsys fs,
894 ext2fs_block_bitmap *ret);
895 extern int ext2fs_get_bitmap_granularity(ext2fs_block_bitmap bitmap);
896 extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs,
898 ext2fs_inode_bitmap *ret);
899 extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap,
900 ext2_ino_t end, ext2_ino_t *oend);
901 extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap,
902 blk_t end, blk_t *oend);
903 extern errcode_t ext2fs_fudge_block_bitmap_end2(ext2fs_block_bitmap bitmap,
904 blk64_t end, blk64_t *oend);
905 extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap);
906 extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap);
907 extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end,
908 ext2fs_inode_bitmap bmap);
909 extern errcode_t ext2fs_resize_inode_bitmap2(__u64 new_end,
911 ext2fs_inode_bitmap bmap);
912 extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end,
913 ext2fs_block_bitmap bmap);
914 extern errcode_t ext2fs_resize_block_bitmap2(__u64 new_end,
916 ext2fs_block_bitmap bmap);
917 extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1,
918 ext2fs_block_bitmap bm2);
919 extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1,
920 ext2fs_inode_bitmap bm2);
921 extern errcode_t ext2fs_set_inode_bitmap_range(ext2fs_inode_bitmap bmap,
922 ext2_ino_t start, unsigned int num,
924 extern errcode_t ext2fs_set_inode_bitmap_range2(ext2fs_inode_bitmap bmap,
925 __u64 start, size_t num,
927 extern errcode_t ext2fs_get_inode_bitmap_range(ext2fs_inode_bitmap bmap,
928 ext2_ino_t start, unsigned int num,
930 extern errcode_t ext2fs_get_inode_bitmap_range2(ext2fs_inode_bitmap bmap,
931 __u64 start, size_t num,
933 extern errcode_t ext2fs_set_block_bitmap_range(ext2fs_block_bitmap bmap,
934 blk_t start, unsigned int num,
936 extern errcode_t ext2fs_set_block_bitmap_range2(ext2fs_block_bitmap bmap,
937 blk64_t start, size_t num,
939 extern errcode_t ext2fs_get_block_bitmap_range(ext2fs_block_bitmap bmap,
940 blk_t start, unsigned int num,
942 extern errcode_t ext2fs_get_block_bitmap_range2(ext2fs_block_bitmap bmap,
943 blk64_t start, size_t num,
947 extern __u32 ext2fs_inode_bitmap_checksum(ext2_filsys fs, dgrp_t group);
948 extern __u32 ext2fs_block_bitmap_checksum(ext2_filsys fs, dgrp_t group);
949 extern dgrp_t ext2fs_group_of_blk2(ext2_filsys fs, blk64_t);
950 extern blk64_t ext2fs_group_first_block2(ext2_filsys fs, dgrp_t group);
951 extern blk64_t ext2fs_group_last_block2(ext2_filsys fs, dgrp_t group);
952 extern int ext2fs_group_blocks_count(ext2_filsys fs, dgrp_t group);
953 extern blk64_t ext2fs_inode_data_blocks2(ext2_filsys fs,
954 struct ext2_inode *inode);
955 extern blk64_t ext2fs_inode_i_blocks(ext2_filsys fs,
956 struct ext2_inode *inode);
957 extern blk64_t ext2fs_get_stat_i_blocks(ext2_filsys fs,
958 struct ext2_inode *inode);
959 extern blk64_t ext2fs_blocks_count(struct ext2_super_block *super);
960 extern void ext2fs_blocks_count_set(struct ext2_super_block *super,
962 extern void ext2fs_blocks_count_add(struct ext2_super_block *super,
964 extern blk64_t ext2fs_r_blocks_count(struct ext2_super_block *super);
965 extern void ext2fs_r_blocks_count_set(struct ext2_super_block *super,
967 extern void ext2fs_r_blocks_count_add(struct ext2_super_block *super,
969 extern blk64_t ext2fs_free_blocks_count(struct ext2_super_block *super);
970 extern void ext2fs_free_blocks_count_set(struct ext2_super_block *super,
972 extern void ext2fs_free_blocks_count_add(struct ext2_super_block *super,
974 /* Block group descriptor accessor functions */
975 extern struct ext2_group_desc *ext2fs_group_desc(ext2_filsys fs,
976 struct opaque_ext2_group_desc *gdp,
978 extern blk64_t ext2fs_block_bitmap_csum(ext2_filsys fs, dgrp_t group);
979 extern blk64_t ext2fs_block_bitmap_loc(ext2_filsys fs, dgrp_t group);
980 extern void ext2fs_block_bitmap_loc_set(ext2_filsys fs, dgrp_t group,
982 extern __u32 ext2fs_inode_bitmap_csum(ext2_filsys fs, dgrp_t group);
983 extern blk64_t ext2fs_inode_bitmap_loc(ext2_filsys fs, dgrp_t group);
984 extern void ext2fs_inode_bitmap_loc_set(ext2_filsys fs, dgrp_t group,
986 extern blk64_t ext2fs_inode_table_loc(ext2_filsys fs, dgrp_t group);
987 extern void ext2fs_inode_table_loc_set(ext2_filsys fs, dgrp_t group,
989 extern __u32 ext2fs_bg_free_blocks_count(ext2_filsys fs, dgrp_t group);
990 extern void ext2fs_bg_free_blocks_count_set(ext2_filsys fs, dgrp_t group,
992 extern __u32 ext2fs_bg_free_inodes_count(ext2_filsys fs, dgrp_t group);
993 extern void ext2fs_bg_free_inodes_count_set(ext2_filsys fs, dgrp_t group,
995 extern __u32 ext2fs_bg_used_dirs_count(ext2_filsys fs, dgrp_t group);
996 extern void ext2fs_bg_used_dirs_count_set(ext2_filsys fs, dgrp_t group,
998 extern __u32 ext2fs_bg_itable_unused(ext2_filsys fs, dgrp_t group);
999 extern void ext2fs_bg_itable_unused_set(ext2_filsys fs, dgrp_t group,
1001 extern __u16 ext2fs_bg_flags(ext2_filsys fs, dgrp_t group);
1002 extern void ext2fs_bg_flags_zap(ext2_filsys fs, dgrp_t group);
1003 extern int ext2fs_bg_flags_test(ext2_filsys fs, dgrp_t group, __u16 bg_flag);
1004 extern void ext2fs_bg_flags_set(ext2_filsys fs, dgrp_t group, __u16 bg_flags);
1005 extern void ext2fs_bg_flags_clear(ext2_filsys fs, dgrp_t group, __u16 bg_flags);
1006 extern __u16 ext2fs_bg_checksum(ext2_filsys fs, dgrp_t group);
1007 extern void ext2fs_bg_checksum_set(ext2_filsys fs, dgrp_t group, __u16 checksum);
1008 extern blk64_t ext2fs_file_acl_block(ext2_filsys fs,
1009 const struct ext2_inode *inode);
1010 extern void ext2fs_file_acl_block_set(ext2_filsys fs,
1011 struct ext2_inode *inode, blk64_t blk);
1012 extern errcode_t ext2fs_inode_size_set(ext2_filsys fs, struct ext2_inode *inode,
1016 extern errcode_t ext2fs_block_iterate(ext2_filsys fs,
1020 int (*func)(ext2_filsys fs,
1025 errcode_t ext2fs_block_iterate2(ext2_filsys fs,
1029 int (*func)(ext2_filsys fs,
1031 e2_blkcnt_t blockcnt,
1036 errcode_t ext2fs_block_iterate3(ext2_filsys fs,
1040 int (*func)(ext2_filsys fs,
1042 e2_blkcnt_t blockcnt,
1049 extern errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino,
1050 struct ext2_inode *inode,
1051 char *block_buf, int bmap_flags,
1052 blk_t block, blk_t *phys_blk);
1053 extern errcode_t ext2fs_bmap2(ext2_filsys fs, ext2_ino_t ino,
1054 struct ext2_inode *inode,
1055 char *block_buf, int bmap_flags, blk64_t block,
1056 int *ret_flags, blk64_t *phys_blk);
1057 errcode_t ext2fs_map_cluster_block(ext2_filsys fs, ext2_ino_t ino,
1058 struct ext2_inode *inode, blk64_t lblk,
1063 extern errcode_t ext2fs_move_blocks(ext2_filsys fs,
1064 ext2fs_block_bitmap reserve,
1065 ext2fs_block_bitmap alloc_map,
1070 extern errcode_t ext2fs_check_desc(ext2_filsys fs);
1073 extern errcode_t ext2fs_close(ext2_filsys fs);
1074 extern errcode_t ext2fs_close2(ext2_filsys fs, int flags);
1075 extern errcode_t ext2fs_close_free(ext2_filsys *fs);
1076 extern errcode_t ext2fs_flush(ext2_filsys fs);
1077 extern errcode_t ext2fs_flush2(ext2_filsys fs, int flags);
1078 extern int ext2fs_bg_has_super(ext2_filsys fs, dgrp_t group_block);
1079 extern errcode_t ext2fs_super_and_bgd_loc2(ext2_filsys fs,
1081 blk64_t *ret_super_blk,
1082 blk64_t *ret_old_desc_blk,
1083 blk64_t *ret_new_desc_blk,
1084 blk_t *ret_used_blks);
1085 extern int ext2fs_super_and_bgd_loc(ext2_filsys fs,
1087 blk_t *ret_super_blk,
1088 blk_t *ret_old_desc_blk,
1089 blk_t *ret_new_desc_blk,
1091 extern void ext2fs_update_dynamic_rev(ext2_filsys fs);
1094 extern __u32 ext2fs_crc32_be(__u32 crc, unsigned char const *p, size_t len);
1095 extern __u32 ext2fs_crc32c_le(__u32 crc, unsigned char const *p, size_t len);
1098 extern void ext2fs_init_csum_seed(ext2_filsys fs);
1099 extern errcode_t ext2fs_mmp_csum_set(ext2_filsys fs, struct mmp_struct *mmp);
1100 extern int ext2fs_mmp_csum_verify(ext2_filsys, struct mmp_struct *mmp);
1101 extern int ext2fs_verify_csum_type(ext2_filsys fs, struct ext2_super_block *sb);
1102 extern errcode_t ext2fs_superblock_csum_set(ext2_filsys fs,
1103 struct ext2_super_block *sb);
1104 extern int ext2fs_superblock_csum_verify(ext2_filsys fs,
1105 struct ext2_super_block *sb);
1106 extern errcode_t ext2fs_ext_attr_block_csum_set(ext2_filsys fs,
1107 ext2_ino_t inum, blk64_t block,
1108 struct ext2_ext_attr_header *hdr);
1109 extern int ext2fs_ext_attr_block_csum_verify(ext2_filsys fs, ext2_ino_t inum,
1111 struct ext2_ext_attr_header *hdr);
1112 #define EXT2_DIRENT_TAIL(block, blocksize) \
1113 ((struct ext2_dir_entry_tail *)(((char *)(block)) + \
1114 (blocksize) - sizeof(struct ext2_dir_entry_tail)))
1116 extern void ext2fs_initialize_dirent_tail(ext2_filsys fs,
1117 struct ext2_dir_entry_tail *t);
1118 extern int ext2fs_dirent_has_tail(ext2_filsys fs,
1119 struct ext2_dir_entry *dirent);
1120 extern int ext2fs_dirent_csum_verify(ext2_filsys fs, ext2_ino_t inum,
1121 struct ext2_dir_entry *dirent);
1122 extern int ext2fs_dir_block_csum_verify(ext2_filsys fs, ext2_ino_t inum,
1123 struct ext2_dir_entry *dirent);
1124 extern errcode_t ext2fs_dir_block_csum_set(ext2_filsys fs, ext2_ino_t inum,
1125 struct ext2_dir_entry *dirent);
1126 extern errcode_t ext2fs_get_dx_countlimit(ext2_filsys fs,
1127 struct ext2_dir_entry *dirent,
1128 struct ext2_dx_countlimit **cc,
1130 extern errcode_t ext2fs_dx_csum(ext2_filsys fs, ext2_ino_t inum,
1131 struct ext2_dir_entry *dirent,
1132 __u32 *crc, struct ext2_dx_tail **ret_t);
1133 extern errcode_t ext2fs_extent_block_csum_set(ext2_filsys fs,
1135 struct ext3_extent_header *eh);
1136 extern int ext2fs_extent_block_csum_verify(ext2_filsys fs,
1138 struct ext3_extent_header *eh);
1139 extern errcode_t ext2fs_block_bitmap_csum_set(ext2_filsys fs, dgrp_t group,
1140 char *bitmap, int size);
1141 extern int ext2fs_block_bitmap_csum_verify(ext2_filsys fs, dgrp_t group,
1142 char *bitmap, int size);
1143 extern errcode_t ext2fs_inode_bitmap_csum_set(ext2_filsys fs, dgrp_t group,
1144 char *bitmap, int size);
1145 extern int ext2fs_inode_bitmap_csum_verify(ext2_filsys fs, dgrp_t group,
1146 char *bitmap, int size);
1147 extern errcode_t ext2fs_inode_csum_set(ext2_filsys fs, ext2_ino_t inum,
1148 struct ext2_inode_large *inode);
1149 extern int ext2fs_inode_csum_verify(ext2_filsys fs, ext2_ino_t inum,
1150 struct ext2_inode_large *inode);
1151 extern void ext2fs_group_desc_csum_set(ext2_filsys fs, dgrp_t group);
1152 extern int ext2fs_group_desc_csum_verify(ext2_filsys fs, dgrp_t group);
1153 extern errcode_t ext2fs_set_gdt_csum(ext2_filsys fs);
1154 extern __u16 ext2fs_group_desc_csum(ext2_filsys fs, dgrp_t group);
1157 extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist);
1158 extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ext2_ino_t ino,
1159 blk_t blk, int blockcnt);
1160 extern errcode_t ext2fs_add_dir_block2(ext2_dblist dblist, ext2_ino_t ino,
1161 blk64_t blk, e2_blkcnt_t blockcnt);
1162 extern errcode_t ext2fs_merge_dblist(ext2_dblist src, ext2_dblist dest);
1163 extern void ext2fs_dblist_sort(ext2_dblist dblist,
1164 EXT2_QSORT_TYPE (*sortfunc)(const void *,
1166 extern void ext2fs_dblist_sort2(ext2_dblist dblist,
1167 EXT2_QSORT_TYPE (*sortfunc)(const void *,
1169 extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist,
1170 int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info,
1173 extern errcode_t ext2fs_dblist_iterate2(ext2_dblist dblist,
1174 int (*func)(ext2_filsys fs, struct ext2_db_entry2 *db_info,
1177 extern errcode_t ext2fs_dblist_iterate3(ext2_dblist dblist,
1178 int (*func)(ext2_filsys fs, struct ext2_db_entry2 *db_info,
1180 unsigned long long start,
1181 unsigned long long count,
1183 extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ext2_ino_t ino,
1184 blk_t blk, int blockcnt);
1185 extern errcode_t ext2fs_set_dir_block2(ext2_dblist dblist, ext2_ino_t ino,
1186 blk64_t blk, e2_blkcnt_t blockcnt);
1187 extern errcode_t ext2fs_copy_dblist(ext2_dblist src,
1189 extern int ext2fs_dblist_count(ext2_dblist dblist);
1190 extern blk64_t ext2fs_dblist_count2(ext2_dblist dblist);
1191 extern errcode_t ext2fs_dblist_get_last(ext2_dblist dblist,
1192 struct ext2_db_entry **entry);
1193 extern errcode_t ext2fs_dblist_get_last2(ext2_dblist dblist,
1194 struct ext2_db_entry2 **entry);
1195 extern errcode_t ext2fs_dblist_drop_last(ext2_dblist dblist);
1199 ext2fs_dblist_dir_iterate(ext2_dblist dblist,
1202 int (*func)(ext2_ino_t dir,
1204 struct ext2_dir_entry *dirent,
1212 /* digest_encode.c */
1213 #define EXT2FS_DIGEST_SIZE EXT2FS_SHA256_LENGTH
1214 extern int ext2fs_digest_encode(const char *src, int len, char *dst);
1215 extern int ext2fs_digest_decode(const char *src, int len, char *dst);
1219 extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block,
1221 extern errcode_t ext2fs_read_dir_block2(ext2_filsys fs, blk_t block,
1222 void *buf, int flags);
1223 extern errcode_t ext2fs_read_dir_block3(ext2_filsys fs, blk64_t block,
1224 void *buf, int flags);
1225 extern errcode_t ext2fs_read_dir_block4(ext2_filsys fs, blk64_t block,
1226 void *buf, int flags, ext2_ino_t ino);
1227 extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block,
1229 extern errcode_t ext2fs_write_dir_block2(ext2_filsys fs, blk_t block,
1230 void *buf, int flags);
1231 extern errcode_t ext2fs_write_dir_block3(ext2_filsys fs, blk64_t block,
1232 void *buf, int flags);
1233 extern errcode_t ext2fs_write_dir_block4(ext2_filsys fs, blk64_t block,
1234 void *buf, int flags, ext2_ino_t ino);
1237 extern errcode_t ext2fs_dirhash(int version, const char *name, int len,
1239 ext2_dirhash_t *ret_hash,
1240 ext2_dirhash_t *ret_minor_hash);
1242 extern errcode_t ext2fs_dirhash2(int version, const char *name, int len,
1243 const struct ext2fs_nls_table *charset,
1246 ext2_dirhash_t *ret_hash,
1247 ext2_dirhash_t *ret_minor_hash);
1250 extern errcode_t ext2fs_get_rec_len(ext2_filsys fs,
1251 struct ext2_dir_entry *dirent,
1252 unsigned int *rec_len);
1253 extern errcode_t ext2fs_set_rec_len(ext2_filsys fs,
1255 struct ext2_dir_entry *dirent);
1256 extern errcode_t ext2fs_dir_iterate(ext2_filsys fs,
1260 int (*func)(struct ext2_dir_entry *dirent,
1266 extern errcode_t ext2fs_dir_iterate2(ext2_filsys fs,
1270 int (*func)(ext2_ino_t dir,
1272 struct ext2_dir_entry *dirent,
1280 extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest);
1283 extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir);
1286 extern errcode_t ext2fs_attr_get(ext2_filsys fs, struct ext2_inode *inode,
1287 int name_index, const char *name, char *buffer,
1288 size_t buffer_size, int *easize);
1290 extern __u32 ext2fs_ext_attr_hash_entry(struct ext2_ext_attr_entry *entry,
1292 extern __u32 ext2fs_ext_attr_hash_entry_signed(struct ext2_ext_attr_entry *entry,
1294 extern errcode_t ext2fs_ext_attr_hash_entry2(ext2_filsys fs,
1295 struct ext2_ext_attr_entry *entry,
1296 void *data, __u32 *hash);
1297 extern errcode_t ext2fs_ext_attr_hash_entry3(ext2_filsys fs,
1298 struct ext2_ext_attr_entry *entry,
1299 void *data, __u32 *hash,
1300 __u32 *signed_hash);
1301 int ext2fs_attr_get_next_attr(struct ext2_ext_attr_entry *entry, int name_index,
1302 char *buffer, int buffer_size, int start);
1303 errcode_t ext2fs_attr_set(ext2_filsys fs, ext2_ino_t ino,
1304 struct ext2_inode *inode,
1305 int name_index, const char *name, const char *value,
1306 int value_len, int flags);
1307 extern errcode_t ext2fs_expand_extra_isize(ext2_filsys fs, ext2_ino_t ino,
1308 struct ext2_inode_large *inode,
1309 int new_extra_isize, int *ret,
1311 extern errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf);
1312 extern errcode_t ext2fs_read_ext_attr2(ext2_filsys fs, blk64_t block,
1314 extern errcode_t ext2fs_read_ext_attr3(ext2_filsys fs, blk64_t block,
1315 void *buf, ext2_ino_t inum);
1316 extern errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block,
1318 extern errcode_t ext2fs_write_ext_attr2(ext2_filsys fs, blk64_t block,
1320 extern errcode_t ext2fs_write_ext_attr3(ext2_filsys fs, blk64_t block,
1321 void *buf, ext2_ino_t inum);
1322 extern errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk,
1324 int adjust, __u32 *newcount);
1325 extern errcode_t ext2fs_adjust_ea_refcount2(ext2_filsys fs, blk64_t blk,
1327 int adjust, __u32 *newcount);
1328 extern errcode_t ext2fs_adjust_ea_refcount3(ext2_filsys fs, blk64_t blk,
1330 int adjust, __u32 *newcount,
1332 errcode_t ext2fs_xattrs_write(struct ext2_xattr_handle *handle);
1333 errcode_t ext2fs_xattrs_read(struct ext2_xattr_handle *handle);
1334 errcode_t ext2fs_xattrs_read_inode(struct ext2_xattr_handle *handle,
1335 struct ext2_inode_large *inode);
1336 errcode_t ext2fs_xattrs_iterate(struct ext2_xattr_handle *h,
1337 int (*func)(char *name, char *value,
1339 ext2_ino_t inode_num, void *data),
1341 errcode_t ext2fs_xattr_get(struct ext2_xattr_handle *h, const char *key,
1342 void **value, size_t *value_len);
1343 errcode_t ext2fs_xattr_set(struct ext2_xattr_handle *handle,
1347 errcode_t ext2fs_xattr_remove(struct ext2_xattr_handle *handle,
1349 errcode_t ext2fs_xattrs_open(ext2_filsys fs, ext2_ino_t ino,
1350 struct ext2_xattr_handle **handle);
1351 errcode_t ext2fs_xattrs_close(struct ext2_xattr_handle **handle);
1352 errcode_t ext2fs_free_ext_attr(ext2_filsys fs, ext2_ino_t ino,
1353 struct ext2_inode_large *inode);
1354 errcode_t ext2fs_xattrs_count(struct ext2_xattr_handle *handle, size_t *count);
1355 errcode_t ext2fs_xattr_inode_max_size(ext2_filsys fs, ext2_ino_t ino,
1357 #define XATTR_HANDLE_FLAG_RAW 0x0001
1358 errcode_t ext2fs_xattrs_flags(struct ext2_xattr_handle *handle,
1359 unsigned int *new_flags, unsigned int *old_flags);
1360 extern void ext2fs_ext_attr_block_rehash(struct ext2_ext_attr_header *header,
1361 struct ext2_ext_attr_entry *end);
1362 extern __u32 ext2fs_get_ea_inode_hash(struct ext2_inode *inode);
1363 extern void ext2fs_set_ea_inode_hash(struct ext2_inode *inode, __u32 hash);
1364 extern __u64 ext2fs_get_ea_inode_ref(struct ext2_inode *inode);
1365 extern void ext2fs_set_ea_inode_ref(struct ext2_inode *inode, __u64 ref_count);
1368 extern errcode_t ext2fs_extent_header_verify(void *ptr, int size);
1369 extern errcode_t ext2fs_extent_open(ext2_filsys fs, ext2_ino_t ino,
1370 ext2_extent_handle_t *handle);
1371 extern errcode_t ext2fs_extent_open2(ext2_filsys fs, ext2_ino_t ino,
1372 struct ext2_inode *inode,
1373 ext2_extent_handle_t *ret_handle);
1374 extern void ext2fs_extent_free(ext2_extent_handle_t handle);
1375 extern errcode_t ext2fs_extent_get(ext2_extent_handle_t handle,
1376 int flags, struct ext2fs_extent *extent);
1377 extern errcode_t ext2fs_extent_node_split(ext2_extent_handle_t handle);
1378 extern errcode_t ext2fs_extent_replace(ext2_extent_handle_t handle, int flags,
1379 struct ext2fs_extent *extent);
1380 extern errcode_t ext2fs_extent_insert(ext2_extent_handle_t handle, int flags,
1381 struct ext2fs_extent *extent);
1382 extern errcode_t ext2fs_extent_set_bmap(ext2_extent_handle_t handle,
1383 blk64_t logical, blk64_t physical,
1385 extern errcode_t ext2fs_extent_delete(ext2_extent_handle_t handle, int flags);
1386 extern errcode_t ext2fs_extent_get_info(ext2_extent_handle_t handle,
1387 struct ext2_extent_info *info);
1388 extern errcode_t ext2fs_extent_goto(ext2_extent_handle_t handle,
1390 extern errcode_t ext2fs_extent_goto2(ext2_extent_handle_t handle,
1391 int leaf_level, blk64_t blk);
1392 extern errcode_t ext2fs_extent_fix_parents(ext2_extent_handle_t handle);
1393 extern size_t ext2fs_max_extent_depth(ext2_extent_handle_t handle);
1394 extern errcode_t ext2fs_fix_extents_checksums(ext2_filsys fs, ext2_ino_t ino,
1395 struct ext2_inode *inode);
1396 extern errcode_t ext2fs_count_blocks(ext2_filsys fs, ext2_ino_t ino,
1397 struct ext2_inode *inode, blk64_t *ret_count);
1398 extern errcode_t ext2fs_decode_extent(struct ext2fs_extent *to, void *from,
1402 #define EXT2_FALLOCATE_ZERO_BLOCKS (0x1)
1403 #define EXT2_FALLOCATE_FORCE_INIT (0x2)
1404 #define EXT2_FALLOCATE_FORCE_UNINIT (0x4)
1405 #define EXT2_FALLOCATE_INIT_BEYOND_EOF (0x8)
1406 #define EXT2_FALLOCATE_ALL_FLAGS (0xF)
1407 errcode_t ext2fs_fallocate(ext2_filsys fs, int flags, ext2_ino_t ino,
1408 struct ext2_inode *inode, blk64_t goal,
1409 blk64_t start, blk64_t len);
1412 extern errcode_t ext2fs_file_open2(ext2_filsys fs, ext2_ino_t ino,
1413 struct ext2_inode *inode,
1414 int flags, ext2_file_t *ret);
1415 extern errcode_t ext2fs_file_open(ext2_filsys fs, ext2_ino_t ino,
1416 int flags, ext2_file_t *ret);
1417 extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file);
1418 struct ext2_inode *ext2fs_file_get_inode(ext2_file_t file);
1419 extern ext2_ino_t ext2fs_file_get_inode_num(ext2_file_t file);
1420 extern errcode_t ext2fs_file_close(ext2_file_t file);
1421 extern errcode_t ext2fs_file_flush(ext2_file_t file);
1422 extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf,
1423 unsigned int wanted, unsigned int *got);
1424 extern errcode_t ext2fs_file_write(ext2_file_t file, const void *buf,
1425 unsigned int nbytes, unsigned int *written);
1426 extern errcode_t ext2fs_file_llseek(ext2_file_t file, __u64 offset,
1427 int whence, __u64 *ret_pos);
1428 extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset,
1429 int whence, ext2_off_t *ret_pos);
1430 errcode_t ext2fs_file_get_lsize(ext2_file_t file, __u64 *ret_size);
1431 extern ext2_off_t ext2fs_file_get_size(ext2_file_t file);
1432 extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size);
1433 extern errcode_t ext2fs_file_set_size2(ext2_file_t file, ext2_off64_t size);
1436 extern char *ext2fs_find_block_device(dev_t device);
1439 extern errcode_t ext2fs_sync_device(int fd, int flushb);
1442 extern void ext2fs_free(ext2_filsys fs);
1443 extern void ext2fs_free_dblist(ext2_dblist dblist);
1444 extern void ext2fs_badblocks_list_free(ext2_badblocks_list bb);
1445 extern void ext2fs_u32_list_free(ext2_u32_list bb);
1448 extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap);
1449 extern errcode_t ext2fs_make_generic_bitmap(errcode_t magic, ext2_filsys fs,
1450 __u32 start, __u32 end,
1452 const char *descr, char *init_map,
1453 ext2fs_generic_bitmap *ret);
1454 extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start,
1458 ext2fs_generic_bitmap *ret);
1459 extern errcode_t ext2fs_copy_generic_bitmap(ext2fs_generic_bitmap src,
1460 ext2fs_generic_bitmap *dest);
1461 extern void ext2fs_clear_generic_bitmap(ext2fs_generic_bitmap bitmap);
1462 extern errcode_t ext2fs_fudge_generic_bitmap_end(ext2fs_inode_bitmap bitmap,
1467 extern void ext2fs_set_generic_bitmap_padding(ext2fs_generic_bitmap map);
1468 extern errcode_t ext2fs_resize_generic_bitmap(errcode_t magic,
1471 ext2fs_generic_bitmap bmap);
1472 extern errcode_t ext2fs_compare_generic_bitmap(errcode_t magic, errcode_t neq,
1473 ext2fs_generic_bitmap bm1,
1474 ext2fs_generic_bitmap bm2);
1475 extern errcode_t ext2fs_get_generic_bitmap_range(ext2fs_generic_bitmap bmap,
1477 __u32 start, __u32 num,
1479 extern errcode_t ext2fs_set_generic_bitmap_range(ext2fs_generic_bitmap bmap,
1481 __u32 start, __u32 num,
1483 extern errcode_t ext2fs_find_first_zero_generic_bitmap(ext2fs_generic_bitmap bitmap,
1484 __u32 start, __u32 end,
1486 extern errcode_t ext2fs_find_first_set_generic_bitmap(ext2fs_generic_bitmap bitmap,
1487 __u32 start, __u32 end,
1490 /* gen_bitmap64.c */
1491 void ext2fs_free_generic_bmap(ext2fs_generic_bitmap bmap);
1492 errcode_t ext2fs_alloc_generic_bmap(ext2_filsys fs, errcode_t magic,
1493 int type, __u64 start, __u64 end,
1496 ext2fs_generic_bitmap *ret);
1497 errcode_t ext2fs_copy_generic_bmap(ext2fs_generic_bitmap src,
1498 ext2fs_generic_bitmap *dest);
1499 void ext2fs_clear_generic_bmap(ext2fs_generic_bitmap bitmap);
1500 errcode_t ext2fs_fudge_generic_bmap_end(ext2fs_generic_bitmap bitmap,
1502 __u64 end, __u64 *oend);
1503 void ext2fs_set_generic_bmap_padding(ext2fs_generic_bitmap bmap);
1504 errcode_t ext2fs_resize_generic_bmap(ext2fs_generic_bitmap bmap,
1506 __u64 new_real_end);
1507 errcode_t ext2fs_merge_generic_bmap(ext2fs_generic_bitmap gen_src,
1508 ext2fs_generic_bitmap gen_dest,
1509 ext2fs_generic_bitmap gen_dup,
1510 ext2fs_generic_bitmap dup_allowed);
1511 errcode_t ext2fs_compare_generic_bmap(errcode_t neq,
1512 ext2fs_generic_bitmap bm1,
1513 ext2fs_generic_bitmap bm2);
1514 errcode_t ext2fs_get_generic_bmap_range(ext2fs_generic_bitmap bmap,
1515 __u64 start, unsigned int num,
1517 errcode_t ext2fs_set_generic_bmap_range(ext2fs_generic_bitmap bmap,
1518 __u64 start, unsigned int num,
1520 errcode_t ext2fs_convert_subcluster_bitmap(ext2_filsys fs,
1521 ext2fs_block_bitmap *bitmap);
1522 errcode_t ext2fs_count_used_clusters(ext2_filsys fs, blk64_t start,
1523 blk64_t end, blk64_t *out);
1524 errcode_t ext2fs_count_used_blocks(ext2_filsys fs, blk64_t start,
1525 blk64_t end, blk64_t *out);
1526 extern unsigned int ext2fs_list_backups(ext2_filsys fs, unsigned int *three,
1527 unsigned int *five, unsigned int *seven);
1529 /* get_num_dirs.c */
1530 extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs);
1533 extern errcode_t ext2fs_get_device_size(const char *file, int blocksize,
1535 extern errcode_t ext2fs_get_device_size2(const char *file, int blocksize,
1536 blk64_t *retblocks);
1539 extern int ext2fs_get_dio_alignment(int fd);
1540 errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize);
1541 errcode_t ext2fs_get_device_phys_sectsize(const char *file, int *sectsize);
1544 errcode_t ext2fs_iblk_add_blocks(ext2_filsys fs, struct ext2_inode *inode,
1545 blk64_t num_blocks);
1546 errcode_t ext2fs_iblk_sub_blocks(ext2_filsys fs, struct ext2_inode *inode,
1547 blk64_t num_blocks);
1548 errcode_t ext2fs_iblk_set(ext2_filsys fs, struct ext2_inode *inode, blk64_t b);
1551 extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags);
1552 extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags);
1553 extern errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd, int flags);
1554 extern errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd, int flags);
1555 extern errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags);
1556 extern errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags);
1559 errcode_t ext2fs_read_ind_block(ext2_filsys fs, blk_t blk, void *buf);
1560 errcode_t ext2fs_write_ind_block(ext2_filsys fs, blk_t blk, void *buf);
1563 extern errcode_t ext2fs_initialize(const char *name, int flags,
1564 struct ext2_super_block *param,
1565 io_manager manager, ext2_filsys *ret_fs);
1566 extern errcode_t ext2fs_calculate_summary_stats(ext2_filsys fs, int super_only);
1567 extern void ext2fs_set_iops_group(ext2_filsys fs, blk64_t *array, int count);
1568 extern void ext2fs_clear_iops_group(ext2_filsys fs, blk64_t *array, int count);
1571 extern void ext2fs_free_icount(ext2_icount_t icount);
1572 extern int ext2fs_icount_is_set(ext2_icount_t icount, ext2_ino_t ino);
1573 extern errcode_t ext2fs_create_icount_tdb(ext2_filsys fs, char *tdb_dir,
1574 int flags, ext2_icount_t *ret);
1575 extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags,
1577 ext2_icount_t hint, ext2_icount_t *ret);
1578 extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags,
1580 ext2_icount_t *ret);
1581 extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ext2_ino_t ino,
1583 extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ext2_ino_t ino,
1585 extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ext2_ino_t ino,
1587 extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ext2_ino_t ino,
1589 extern errcode_t ext2fs_icount_merge(ext2_icount_t src, ext2_icount_t dest);
1590 extern ext2_ino_t ext2fs_get_icount_size(ext2_icount_t icount);
1591 errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *);
1595 extern errcode_t ext2fs_get_memalign(unsigned long size,
1596 unsigned long align, void *ptr);
1599 extern errcode_t ext2fs_inline_data_init(ext2_filsys fs, ext2_ino_t ino);
1600 extern errcode_t ext2fs_inline_data_size(ext2_filsys fs, ext2_ino_t ino,
1602 extern errcode_t ext2fs_inline_data_get(ext2_filsys fs, ext2_ino_t ino,
1603 struct ext2_inode *inode,
1604 void *buf, size_t *size);
1605 extern errcode_t ext2fs_inline_data_set(ext2_filsys fs, ext2_ino_t ino,
1606 struct ext2_inode *inode,
1607 void *buf, size_t size);
1610 extern errcode_t ext2fs_create_inode_cache(ext2_filsys fs,
1611 unsigned int cache_size);
1612 extern void ext2fs_free_inode_cache(struct ext2_inode_cache *icache);
1613 extern errcode_t ext2fs_flush_icache(ext2_filsys fs);
1614 extern errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan,
1616 struct ext2_inode *inode,
1618 #define EXT2_INODE_SCAN_DEFAULT_BUFFER_BLOCKS 8
1619 extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks,
1620 ext2_inode_scan *ret_scan);
1621 extern void ext2fs_close_inode_scan(ext2_inode_scan scan);
1622 extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino,
1623 struct ext2_inode *inode);
1624 extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan,
1626 extern void ext2fs_set_inode_callback
1627 (ext2_inode_scan scan,
1628 errcode_t (*done_group)(ext2_filsys fs,
1629 ext2_inode_scan scan,
1632 void *done_group_data);
1633 extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags,
1635 extern errcode_t ext2fs_read_inode_full(ext2_filsys fs, ext2_ino_t ino,
1636 struct ext2_inode * inode,
1638 extern errcode_t ext2fs_read_inode(ext2_filsys fs, ext2_ino_t ino,
1639 struct ext2_inode * inode);
1640 extern errcode_t ext2fs_read_inode2(ext2_filsys fs, ext2_ino_t ino,
1641 struct ext2_inode * inode,
1642 int bufsize, int flags);
1643 extern errcode_t ext2fs_write_inode_full(ext2_filsys fs, ext2_ino_t ino,
1644 struct ext2_inode * inode,
1646 extern errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino,
1647 struct ext2_inode * inode);
1648 extern errcode_t ext2fs_write_inode2(ext2_filsys fs, ext2_ino_t ino,
1649 struct ext2_inode * inode,
1650 int bufsize, int flags);
1651 extern errcode_t ext2fs_write_new_inode(ext2_filsys fs, ext2_ino_t ino,
1652 struct ext2_inode * inode);
1653 extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks);
1654 extern errcode_t ext2fs_check_directory(ext2_filsys fs, ext2_ino_t ino);
1657 extern io_manager inode_io_manager;
1658 extern errcode_t ext2fs_inode_io_intern(ext2_filsys fs, ext2_ino_t ino,
1660 extern errcode_t ext2fs_inode_io_intern2(ext2_filsys fs, ext2_ino_t ino,
1661 struct ext2_inode *inode,
1665 extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags);
1666 extern errcode_t ext2fs_check_mount_point(const char *device, int *mount_flags,
1667 char *mtpt, int mtlen);
1671 * NOTE: This function removes from an inode the blocks "start", "end", and
1672 * every block in between.
1674 extern errcode_t ext2fs_punch(ext2_filsys fs, ext2_ino_t ino,
1675 struct ext2_inode *inode,
1676 char *block_buf, blk64_t start,
1680 extern errcode_t ext2fs_lookup(ext2_filsys fs, ext2_ino_t dir, const char *name,
1681 int namelen, char *buf, ext2_ino_t *inode);
1682 extern errcode_t ext2fs_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
1683 const char *name, ext2_ino_t *inode);
1684 errcode_t ext2fs_namei_follow(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
1685 const char *name, ext2_ino_t *inode);
1686 extern errcode_t ext2fs_follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
1687 ext2_ino_t inode, ext2_ino_t *res_inode);
1690 int ext2fs_native_flag(void);
1693 extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino,
1694 ext2_ino_t parent_ino, char **block);
1695 extern errcode_t ext2fs_new_dir_inline_data(ext2_filsys fs, ext2_ino_t dir_ino,
1696 ext2_ino_t parent_ino, __u32 *iblock);
1699 extern const struct ext2fs_nls_table *ext2fs_load_nls_table(int encoding);
1700 extern int ext2fs_check_encoded_name(const struct ext2fs_nls_table *table,
1701 char *s, size_t len, char **pos);
1702 extern int ext2fs_casefold_cmp(const struct ext2fs_nls_table *table,
1703 const unsigned char *str1, size_t len1,
1704 const unsigned char *str2, size_t len2);
1707 extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum,
1711 struct ext2fs_journal_params {
1712 blk_t num_journal_blocks;
1713 blk_t num_fc_blocks;
1715 extern errcode_t ext2fs_get_journal_params(
1716 struct ext2fs_journal_params *params, ext2_filsys fs);
1717 extern errcode_t ext2fs_zero_blocks(ext2_filsys fs, blk_t blk, int num,
1718 blk_t *ret_blk, int *ret_count);
1719 extern errcode_t ext2fs_zero_blocks2(ext2_filsys fs, blk64_t blk, int num,
1720 blk64_t *ret_blk, int *ret_count);
1721 extern errcode_t ext2fs_create_journal_superblock(ext2_filsys fs,
1722 __u32 num_blocks, int flags,
1724 extern errcode_t ext2fs_create_journal_superblock2(ext2_filsys fs,
1725 struct ext2fs_journal_params *params,
1726 int flags, char **ret_jsb);
1727 extern errcode_t ext2fs_add_journal_device(ext2_filsys fs,
1728 ext2_filsys journal_dev);
1729 extern errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t num_blocks,
1731 extern errcode_t ext2fs_add_journal_inode2(ext2_filsys fs, blk_t num_blocks,
1732 blk64_t goal, int flags);
1733 extern errcode_t ext2fs_add_journal_inode3(ext2_filsys fs,
1734 struct ext2fs_journal_params *params,
1735 blk64_t goal, int flags);
1736 extern int ext2fs_default_journal_size(__u64 num_blocks);
1737 extern int ext2fs_journal_sb_start(int blocksize);
1740 extern errcode_t ext2fs_open(const char *name, int flags, int superblock,
1741 unsigned int block_size, io_manager manager,
1742 ext2_filsys *ret_fs);
1743 extern errcode_t ext2fs_open2(const char *name, const char *io_options,
1744 int flags, int superblock,
1745 unsigned int block_size, io_manager manager,
1746 ext2_filsys *ret_fs);
1747 errcode_t ext2fs_open_channel(ext2_filsys fs, const char *io_options,
1748 io_manager manager, int flags,
1751 * The dgrp_t argument to these two functions is not actually a group number
1752 * but a block number offset within a group table! Convert with the formula
1753 * (group_number / groups_per_block).
1755 extern blk64_t ext2fs_descriptor_block_loc2(ext2_filsys fs,
1756 blk64_t group_block, dgrp_t i);
1757 extern blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block,
1759 errcode_t ext2fs_get_data_io(ext2_filsys fs, io_channel *old_io);
1760 errcode_t ext2fs_set_data_io(ext2_filsys fs, io_channel new_io);
1761 errcode_t ext2fs_rewrite_to_io(ext2_filsys fs, io_channel new_io);
1764 extern errcode_t ext2fs_create_orphan_file(ext2_filsys fs, blk_t num_blocks);
1765 extern errcode_t ext2fs_truncate_orphan_file(ext2_filsys fs);
1766 extern e2_blkcnt_t ext2fs_default_orphan_file_blocks(ext2_filsys fs);
1767 extern __u32 ext2fs_do_orphan_file_block_csum(ext2_filsys fs, ext2_ino_t ino,
1768 __u32 gen, blk64_t blk,
1770 extern errcode_t ext2fs_orphan_file_block_csum_set(ext2_filsys fs,
1771 ext2_ino_t ino, blk64_t blk,
1773 extern int ext2fs_orphan_file_block_csum_verify(ext2_filsys fs, ext2_ino_t ino,
1774 blk64_t blk, char *buf);
1776 /* get_pathname.c */
1777 extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino,
1781 #define EXT2FS_UNLINK_FORCE 0x1 /* Forcefully unlink even if
1782 * the inode number doesn't
1785 errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name,
1786 ext2_ino_t ino, int flags);
1787 errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir, const char *name,
1788 ext2_ino_t ino, int flags);
1791 errcode_t ext2fs_symlink(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t ino,
1792 const char *name, const char *target);
1793 int ext2fs_is_fast_symlink(struct ext2_inode *inode);
1796 errcode_t ext2fs_mmp_read(ext2_filsys fs, blk64_t mmp_blk, void *buf);
1797 errcode_t ext2fs_mmp_write(ext2_filsys fs, blk64_t mmp_blk, void *buf);
1798 errcode_t ext2fs_mmp_clear(ext2_filsys fs);
1799 errcode_t ext2fs_mmp_init(ext2_filsys fs);
1800 errcode_t ext2fs_mmp_start(ext2_filsys fs);
1801 errcode_t ext2fs_mmp_update(ext2_filsys fs);
1802 errcode_t ext2fs_mmp_update2(ext2_filsys fs, int immediately);
1803 errcode_t ext2fs_mmp_stop(ext2_filsys fs);
1804 unsigned ext2fs_mmp_new_seq(void);
1807 extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs,
1808 ext2_badblocks_list *bb_list);
1810 /* read_bb_file.c */
1811 extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f,
1812 ext2_badblocks_list *bb_list,
1814 void (*invalid)(ext2_filsys fs,
1818 extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f,
1819 ext2_badblocks_list *bb_list,
1820 void (*invalid)(ext2_filsys fs,
1824 extern errcode_t ext2fs_create_resize_inode(ext2_filsys fs);
1827 extern errcode_t ext2fs_rw_bitmaps(ext2_filsys fs, int flags, int num_threads);
1828 extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs);
1829 extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs);
1830 extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs);
1831 extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs);
1832 extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs);
1833 extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs);
1836 #define EXT2FS_SHA256_LENGTH 32
1838 extern void ext2fs_sha256(const unsigned char *in, unsigned long in_size,
1839 unsigned char out[EXT2FS_SHA256_LENGTH]);
1843 #define EXT2FS_SHA512_LENGTH 64
1844 extern void ext2fs_sha512(const unsigned char *in, unsigned long in_size,
1845 unsigned char out[EXT2FS_SHA512_LENGTH]);
1848 extern errcode_t ext2fs_dirent_swab_in2(ext2_filsys fs, char *buf, size_t size,
1850 extern errcode_t ext2fs_dirent_swab_in(ext2_filsys fs, char *buf, int flags);
1851 extern errcode_t ext2fs_dirent_swab_out2(ext2_filsys fs, char *buf, size_t size,
1853 extern errcode_t ext2fs_dirent_swab_out(ext2_filsys fs, char *buf, int flags);
1854 extern void ext2fs_swap_ext_attr(char *to, char *from, int bufsize,
1856 extern void ext2fs_swap_ext_attr_header(struct ext2_ext_attr_header *to_header,
1857 struct ext2_ext_attr_header *from_hdr);
1858 extern void ext2fs_swap_ext_attr_entry(struct ext2_ext_attr_entry *to_entry,
1859 struct ext2_ext_attr_entry *from_entry);
1860 extern void ext2fs_swap_super(struct ext2_super_block * super);
1861 extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp);
1862 extern void ext2fs_swap_group_desc2(ext2_filsys, struct ext2_group_desc *gdp);
1863 extern void ext2fs_swap_inode_full(ext2_filsys fs, struct ext2_inode_large *t,
1864 struct ext2_inode_large *f, int hostorder,
1866 extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t,
1867 struct ext2_inode *f, int hostorder);
1868 extern void ext2fs_swap_mmp(struct mmp_struct *mmp);
1871 extern int ext2fs_open_file(const char *pathname, int flags, mode_t mode);
1872 extern int ext2fs_stat(const char *path, ext2fs_struct_stat *buf);
1873 extern int ext2fs_fstat(int fd, ext2fs_struct_stat *buf);
1876 extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode);
1877 extern int ext2fs_inode_has_valid_blocks2(ext2_filsys fs,
1878 struct ext2_inode *inode);
1881 extern int ext2fs_parse_version_string(const char *ver_string);
1882 extern int ext2fs_get_library_version(const char **ver_string,
1883 const char **date_string);
1885 /* write_bb_file.c */
1886 extern errcode_t ext2fs_write_bb_FILE(ext2_badblocks_list bb_list,
1891 /* inline functions */
1892 #ifdef NO_INLINE_FUNCS
1893 extern errcode_t ext2fs_get_mem(unsigned long size, void *ptr);
1894 extern errcode_t ext2fs_get_memzero(unsigned long size, void *ptr);
1895 extern errcode_t ext2fs_get_array(unsigned long count,
1896 unsigned long size, void *ptr);
1897 extern errcode_t ext2fs_get_arrayzero(unsigned long count,
1898 unsigned long size, void *ptr);
1899 extern errcode_t ext2fs_free_mem(void *ptr);
1900 extern errcode_t ext2fs_resize_mem(unsigned long old_size,
1901 unsigned long size, void *ptr);
1902 extern errcode_t ext2fs_resize_array(unsigned long old_count, unsigned long count,
1903 unsigned long size, void *ptr);
1904 extern void ext2fs_mark_super_dirty(ext2_filsys fs);
1905 extern void ext2fs_mark_changed(ext2_filsys fs);
1906 extern int ext2fs_test_changed(ext2_filsys fs);
1907 extern void ext2fs_mark_valid(ext2_filsys fs);
1908 extern void ext2fs_unmark_valid(ext2_filsys fs);
1909 extern int ext2fs_test_valid(ext2_filsys fs);
1910 extern void ext2fs_mark_ib_dirty(ext2_filsys fs);
1911 extern void ext2fs_mark_bb_dirty(ext2_filsys fs);
1912 extern int ext2fs_test_ib_dirty(ext2_filsys fs);
1913 extern int ext2fs_test_bb_dirty(ext2_filsys fs);
1914 extern dgrp_t ext2fs_group_of_blk(ext2_filsys fs, blk_t blk);
1915 extern dgrp_t ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino);
1916 extern blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group);
1917 extern blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group);
1918 extern blk_t ext2fs_inode_data_blocks(ext2_filsys fs,
1919 struct ext2_inode *inode);
1920 extern int ext2fs_htree_intnode_maxrecs(ext2_filsys fs, int blocks);
1921 extern unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b);
1922 extern __u64 ext2fs_div64_ceil(__u64 a, __u64 b);
1923 extern int ext2fs_dirent_name_len(const struct ext2_dir_entry *entry);
1924 extern void ext2fs_dirent_set_name_len(struct ext2_dir_entry *entry, int len);
1925 extern int ext2fs_dirent_file_type(const struct ext2_dir_entry *entry);
1926 extern void ext2fs_dirent_set_file_type(struct ext2_dir_entry *entry, int type);
1927 extern struct ext2_inode *ext2fs_inode(struct ext2_inode_large * large_inode);
1928 extern const struct ext2_inode *ext2fs_const_inode(const struct ext2_inode_large * large_inode);
1929 extern int ext2fs_inodes_per_orphan_block(ext2_filsys fs);
1930 extern struct ext4_orphan_block_tail *ext2fs_orphan_block_tail(ext2_filsys fs,
1935 * The actual inlined functions definitions themselves...
1937 * If NO_INLINE_FUNCS is defined, then we won't try to do inline
1940 #if (defined(INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS))
1941 #ifdef INCLUDE_INLINE_FUNCS
1942 #define _INLINE_ extern
1944 #if (__STDC_VERSION__ >= 199901L)
1945 #define _INLINE_ inline
1948 #define _INLINE_ extern __inline__
1949 #else /* For Watcom C */
1950 #define _INLINE_ extern inline
1951 #endif /* __GNUC__ */
1952 #endif /* __STDC_VERSION__ >= 199901L */
1955 #ifndef EXT2_CUSTOM_MEMORY_ROUTINES
1958 * Allocate memory. The 'ptr' arg must point to a pointer.
1960 _INLINE_ errcode_t ext2fs_get_mem(unsigned long size, void *ptr)
1966 return EXT2_ET_NO_MEMORY;
1967 memcpy(ptr, &pp, sizeof (pp));
1971 _INLINE_ errcode_t ext2fs_get_memzero(unsigned long size, void *ptr)
1977 return EXT2_ET_NO_MEMORY;
1978 memset(pp, 0, size);
1979 memcpy(ptr, &pp, sizeof(pp));
1983 _INLINE_ errcode_t ext2fs_get_array(unsigned long count, unsigned long size,
1986 if (count && (~0UL)/count < size)
1987 return EXT2_ET_NO_MEMORY;
1988 return ext2fs_get_mem(count*size, ptr);
1991 _INLINE_ errcode_t ext2fs_get_arrayzero(unsigned long count,
1992 unsigned long size, void *ptr)
1994 if (count && (~0UL)/count < size)
1995 return EXT2_ET_NO_MEMORY;
1997 return ext2fs_get_memzero((size_t)count * size, ptr);
2001 * Free memory. The 'ptr' arg must point to a pointer.
2003 _INLINE_ errcode_t ext2fs_free_mem(void *ptr)
2007 memcpy(&p, ptr, sizeof(p));
2010 memcpy(ptr, &p, sizeof(p));
2015 * Resize memory. The 'ptr' arg must point to a pointer.
2017 _INLINE_ errcode_t ext2fs_resize_mem(unsigned long EXT2FS_ATTR((unused)) old_size,
2018 unsigned long size, void *ptr)
2022 /* Use "memcpy" for pointer assignments here to avoid problems
2023 * with C99 strict type aliasing rules. */
2024 memcpy(&p, ptr, sizeof(p));
2025 p = realloc(p, size);
2027 return EXT2_ET_NO_MEMORY;
2028 memcpy(ptr, &p, sizeof(p));
2033 * Resize array. The 'ptr' arg must point to a pointer.
2035 _INLINE_ errcode_t ext2fs_resize_array(unsigned long size,
2036 unsigned long old_count,
2037 unsigned long count, void *ptr)
2039 unsigned long old_size;
2042 if (count && (~0UL)/count < size)
2043 return EXT2_ET_NO_MEMORY;
2046 old_size = size * old_count;
2047 retval = ext2fs_resize_mem(old_size, size, ptr);
2051 if (size > old_size) {
2054 memcpy(&p, ptr, sizeof(p));
2055 memset((char *)p + old_size, 0, size - old_size);
2056 memcpy(ptr, &p, sizeof(p));
2061 #endif /* Custom memory routines */
2064 * Mark a filesystem superblock as dirty
2066 _INLINE_ void ext2fs_mark_super_dirty(ext2_filsys fs)
2068 fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_CHANGED;
2072 * Mark a filesystem as changed
2074 _INLINE_ void ext2fs_mark_changed(ext2_filsys fs)
2076 fs->flags |= EXT2_FLAG_CHANGED;
2080 * Check to see if a filesystem has changed
2082 _INLINE_ int ext2fs_test_changed(ext2_filsys fs)
2084 return (fs->flags & EXT2_FLAG_CHANGED);
2088 * Mark a filesystem as valid
2090 _INLINE_ void ext2fs_mark_valid(ext2_filsys fs)
2092 fs->flags |= EXT2_FLAG_VALID;
2096 * Mark a filesystem as NOT valid
2098 _INLINE_ void ext2fs_unmark_valid(ext2_filsys fs)
2100 fs->flags &= ~EXT2_FLAG_VALID;
2104 * Check to see if a filesystem is valid
2106 _INLINE_ int ext2fs_test_valid(ext2_filsys fs)
2108 return (fs->flags & EXT2_FLAG_VALID);
2112 * Mark the inode bitmap as dirty
2114 _INLINE_ void ext2fs_mark_ib_dirty(ext2_filsys fs)
2116 fs->flags |= EXT2_FLAG_IB_DIRTY | EXT2_FLAG_CHANGED;
2120 * Mark the block bitmap as dirty
2122 _INLINE_ void ext2fs_mark_bb_dirty(ext2_filsys fs)
2124 fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_CHANGED;
2128 * Check to see if a filesystem's inode bitmap is dirty
2130 _INLINE_ int ext2fs_test_ib_dirty(ext2_filsys fs)
2132 return (fs->flags & EXT2_FLAG_IB_DIRTY);
2136 * Check to see if a filesystem's block bitmap is dirty
2138 _INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs)
2140 return (fs->flags & EXT2_FLAG_BB_DIRTY);
2144 * Return the group # of a block
2146 _INLINE_ dgrp_t ext2fs_group_of_blk(ext2_filsys fs, blk_t blk)
2148 return ext2fs_group_of_blk2(fs, blk);
2151 * Return the group # of an inode number
2153 _INLINE_ dgrp_t ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino)
2155 return (ino - 1) / fs->super->s_inodes_per_group;
2159 * Return the first block (inclusive) in a group
2161 _INLINE_ blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group)
2163 return (blk_t) ext2fs_group_first_block2(fs, group);
2167 * Return the last block (inclusive) in a group
2169 _INLINE_ blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group)
2171 return (blk_t) ext2fs_group_last_block2(fs, group);
2174 _INLINE_ blk_t ext2fs_inode_data_blocks(ext2_filsys fs,
2175 struct ext2_inode *inode)
2177 return (blk_t) ext2fs_inode_data_blocks2(fs, inode);
2180 _INLINE_ int ext2fs_htree_intnode_maxrecs(ext2_filsys fs, int blocks)
2184 if ((EXT2_SB(fs->super)->s_feature_ro_compat &
2185 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM) != 0)
2186 csum_size = sizeof(struct ext2_dx_tail);
2187 return blocks * ((fs->blocksize - (8 + csum_size)) /
2188 sizeof(struct ext2_dx_entry));
2191 _INLINE_ struct ext2_dx_root_info *get_ext2_dx_root_info(ext2_filsys fs,
2194 struct ext2_dir_entry *de = (struct ext2_dir_entry *)buf;
2196 if (!(fs->super->s_feature_incompat & EXT4_FEATURE_INCOMPAT_DIRDATA))
2197 return (struct ext2_dx_root_info *)(buf +
2198 EXT2_DIR_NAME_LEN(1) +
2199 EXT2_DIR_NAME_LEN(2));
2201 /* get dotdot first */
2202 de = (struct ext2_dir_entry *)((char *)de + de->rec_len);
2204 /* dx root info is after dotdot entry */
2205 de = (struct ext2_dir_entry *)((char *)de + EXT2_DIR_REC_LEN(de));
2207 return (struct ext2_dx_root_info *)de;
2211 * This is an efficient, overflow safe way of calculating ceil((1.0 * a) / b)
2213 _INLINE_ unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b)
2217 return ((a - 1) / b) + 1;
2220 _INLINE_ __u64 ext2fs_div64_ceil(__u64 a, __u64 b)
2224 return ((a - 1) / b) + 1;
2227 _INLINE_ int ext2fs_dirent_name_len(const struct ext2_dir_entry *entry)
2229 return entry->name_len & EXT2_NAME_LEN;
2232 _INLINE_ void ext2fs_dirent_set_name_len(struct ext2_dir_entry *entry, int len)
2234 entry->name_len = (entry->name_len & 0xff00) | (len & 0xff);
2237 _INLINE_ int ext2fs_dirent_file_type(const struct ext2_dir_entry *entry)
2239 return entry->name_len >> 8;
2242 _INLINE_ void ext2fs_dirent_set_file_type(struct ext2_dir_entry *entry, int type)
2244 entry->name_len = (entry->name_len & 0xff) | (type << 8);
2247 _INLINE_ struct ext2_inode *ext2fs_inode(struct ext2_inode_large * large_inode)
2249 /* It is always safe to convert large inode to a small inode */
2250 return (struct ext2_inode *) large_inode;
2253 _INLINE_ const struct ext2_inode *
2254 ext2fs_const_inode(const struct ext2_inode_large * large_inode)
2256 /* It is always safe to convert large inode to a small inode */
2257 return (const struct ext2_inode *) large_inode;
2260 _INLINE_ int ext2fs_inodes_per_orphan_block(ext2_filsys fs)
2262 return (fs->blocksize - sizeof(struct ext4_orphan_block_tail)) /
2266 _INLINE_ struct ext4_orphan_block_tail *
2267 ext2fs_orphan_block_tail(ext2_filsys fs, char *buf)
2269 return (struct ext4_orphan_block_tail *)(buf + fs->blocksize -
2270 sizeof(struct ext4_orphan_block_tail));
2276 /* htree levels for ext4 */
2277 #define EXT4_HTREE_LEVEL_COMPAT 2
2278 #define EXT4_HTREE_LEVEL 3
2280 static inline unsigned int ext2_dir_htree_level(ext2_filsys fs)
2282 if (ext2fs_has_feature_largedir(fs->super))
2283 return EXT4_HTREE_LEVEL;
2285 return EXT4_HTREE_LEVEL_COMPAT;
2292 #endif /* _EXT2FS_EXT2FS_H */