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 #define EXT2FS_NO_TDB_UNUSED
24 #define EXT2FS_NO_TDB_UNUSED EXT2FS_ATTR((unused))
32 * Non-GNU C compilers won't necessarily understand inline
34 #if (!defined(__GNUC__) && !defined(__WATCOMC__))
35 #define NO_INLINE_FUNCS
39 * Where the master copy of the superblock is located, and how big
40 * superblocks are supposed to be. We define SUPERBLOCK_SIZE because
41 * the size of the superblock structure is not necessarily trustworthy
42 * (some versions have the padding set up so that the superblock is
45 #define SUPERBLOCK_OFFSET 1024
46 #define SUPERBLOCK_SIZE 1024
48 #define UUID_STR_SIZE 37
51 * The last ext2fs revision level that this version of the library is
54 #define EXT2_LIB_CURRENT_REV EXT2_DYNAMIC_REV
56 #ifdef HAVE_SYS_TYPES_H
57 #include <sys/types.h>
66 #if EXT2_FLAT_INCLUDES
69 #include "ext3_extents.h"
71 #include <ext2fs/ext2_types.h>
72 #include <ext2fs/ext2_fs.h>
73 #include <ext2fs/ext3_extents.h>
74 #endif /* EXT2_FLAT_INCLUDES */
76 typedef __u32 __bitwise ext2_ino_t;
77 typedef __u32 __bitwise blk_t;
78 typedef __u64 __bitwise blk64_t;
79 typedef __u32 __bitwise dgrp_t;
80 typedef __s32 __bitwise ext2_off_t;
81 typedef __s64 __bitwise ext2_off64_t;
82 typedef __s64 __bitwise e2_blkcnt_t;
83 typedef __u32 __bitwise ext2_dirhash_t;
85 #if EXT2_FLAT_INCLUDES
89 #include "ext2_ext_attr.h"
91 #include <et/com_err.h>
92 #include <ext2fs/ext2_io.h>
93 #include <ext2fs/ext2_err.h>
94 #include <ext2fs/ext2_ext_attr.h>
100 * Portability help for Microsoft Visual C++
103 #define EXT2_QSORT_TYPE int __cdecl
105 #define EXT2_QSORT_TYPE int
108 typedef struct struct_ext2_filsys *ext2_filsys;
110 #define EXT2FS_MARK_ERROR 0
111 #define EXT2FS_UNMARK_ERROR 1
112 #define EXT2FS_TEST_ERROR 2
114 struct ext2fs_struct_generic_bitmap_base {
119 typedef struct ext2fs_struct_generic_bitmap_base *ext2fs_generic_bitmap;
120 typedef struct ext2fs_struct_generic_bitmap_base *ext2fs_inode_bitmap;
121 typedef struct ext2fs_struct_generic_bitmap_base *ext2fs_block_bitmap;
123 #define EXT2_FIRST_INODE(s) EXT2_FIRST_INO(s)
127 * Badblocks list definitions
130 typedef struct ext2_struct_u32_list *ext2_badblocks_list;
131 typedef struct ext2_struct_u32_iterate *ext2_badblocks_iterate;
133 typedef struct ext2_struct_u32_list *ext2_u32_list;
134 typedef struct ext2_struct_u32_iterate *ext2_u32_iterate;
137 typedef struct ext2_struct_u32_list *badblocks_list;
138 typedef struct ext2_struct_u32_iterate *badblocks_iterate;
140 #define BADBLOCKS_FLAG_DIRTY 1
143 * ext2_dblist structure and abstractions (see dblist.c)
145 struct ext2_db_entry2 {
148 e2_blkcnt_t blockcnt;
151 /* Ye Olde 32-bit version */
152 struct ext2_db_entry {
158 typedef struct ext2_struct_dblist *ext2_dblist;
160 #define DBLIST_ABORT 1
163 * ext2_fileio definitions
166 #define EXT2_FILE_WRITE 0x0001
167 #define EXT2_FILE_CREATE 0x0002
169 #define EXT2_FILE_MASK 0x00FF
171 #define EXT2_FILE_BUF_DIRTY 0x4000
172 #define EXT2_FILE_BUF_VALID 0x2000
174 typedef struct ext2_file *ext2_file_t;
176 #define EXT2_SEEK_SET 0
177 #define EXT2_SEEK_CUR 1
178 #define EXT2_SEEK_END 2
181 * Flags for the ext2_filsys structure and for ext2fs_open()
183 #define EXT2_FLAG_RW 0x01
184 #define EXT2_FLAG_CHANGED 0x02
185 #define EXT2_FLAG_DIRTY 0x04
186 #define EXT2_FLAG_VALID 0x08
187 #define EXT2_FLAG_IB_DIRTY 0x10
188 #define EXT2_FLAG_BB_DIRTY 0x20
189 #define EXT2_FLAG_SWAP_BYTES 0x40
190 #define EXT2_FLAG_SWAP_BYTES_READ 0x80
191 #define EXT2_FLAG_SWAP_BYTES_WRITE 0x100
192 #define EXT2_FLAG_MASTER_SB_ONLY 0x200
193 #define EXT2_FLAG_FORCE 0x400
194 #define EXT2_FLAG_SUPER_ONLY 0x800
195 #define EXT2_FLAG_JOURNAL_DEV_OK 0x1000
196 #define EXT2_FLAG_IMAGE_FILE 0x2000
197 #define EXT2_FLAG_EXCLUSIVE 0x4000
198 #define EXT2_FLAG_SOFTSUPP_FEATURES 0x8000
199 #define EXT2_FLAG_NOFREE_ON_ERROR 0x10000
200 #define EXT2_FLAG_64BITS 0x20000
201 #define EXT2_FLAG_PRINT_PROGRESS 0x40000
202 #define EXT2_FLAG_DIRECT_IO 0x80000
203 #define EXT2_FLAG_SKIP_MMP 0x100000
204 #define EXT2_FLAG_IGNORE_CSUM_ERRORS 0x200000
205 #define EXT2_FLAG_SHARE_DUP 0x400000
206 #define EXT2_FLAG_IGNORE_SB_ERRORS 0x800000
207 #define EXT2_FLAG_BBITMAP_TAIL_PROBLEM 0x1000000
208 #define EXT2_FLAG_IBITMAP_TAIL_PROBLEM 0x2000000
209 #define EXT2_FLAG_THREADS 0x4000000
212 * Special flag in the ext2 inode i_flag field that means that this is
213 * a new inode. (So that ext2_write_inode() can clear extra fields.)
215 #define EXT2_NEW_INODE_FL 0x80000000
218 * Flags for mkjournal
220 #define EXT2_MKJOURNAL_V1_SUPER 0x0000001 /* create V1 superblock (deprecated) */
221 #define EXT2_MKJOURNAL_LAZYINIT 0x0000002 /* don't zero journal inode before use*/
222 #define EXT2_MKJOURNAL_NO_MNT_CHECK 0x0000004 /* don't check mount status */
225 * Normal journal area size to fast commit area size ratio. This is used to
226 * set default size of fast commit area.
228 #define EXT2_JOURNAL_TO_FC_BLKS_RATIO 64
230 struct blk_alloc_ctx;
231 struct opaque_ext2_group_desc;
233 struct struct_ext2_filsys {
238 struct ext2_super_block * super;
239 unsigned int blocksize;
241 dgrp_t group_desc_count;
242 unsigned long desc_blocks;
243 struct opaque_ext2_group_desc * group_desc;
244 unsigned int inode_blocks_per_group;
245 ext2fs_inode_bitmap inode_map;
246 ext2fs_block_bitmap block_map;
247 /* XXX FIXME-64: not 64-bit safe, but not used? */
248 errcode_t (*get_blocks)(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks);
249 errcode_t (*check_directory)(ext2_filsys fs, ext2_ino_t ino);
250 errcode_t (*write_bitmaps)(ext2_filsys fs);
251 errcode_t (*read_inode)(ext2_filsys fs, ext2_ino_t ino,
252 struct ext2_inode *inode);
253 errcode_t (*write_inode)(ext2_filsys fs, ext2_ino_t ino,
254 struct ext2_inode *inode);
255 ext2_badblocks_list badblocks;
257 __u32 stride; /* for mke2fs */
258 struct ext2_super_block * orig_super;
259 struct ext2_image_hdr * image_header;
262 int cluster_ratio_bits;
263 __u16 default_bitmap_type;
264 __u16 fs_num_threads;
266 * Reserved for future expansion
271 * Reserved for the use of the calling application.
278 struct ext2_inode_cache *icache;
282 * More callback functions
284 errcode_t (*get_alloc_block)(ext2_filsys fs, blk64_t goal,
286 errcode_t (*get_alloc_block2)(ext2_filsys fs, blk64_t goal,
287 blk64_t *ret, struct blk_alloc_ctx *ctx);
288 void (*block_alloc_stats)(ext2_filsys fs, blk64_t blk, int inuse);
291 * Buffers for Multiple mount protection(MMP) block.
298 * Time at which e2fsck last updated the MMP block.
300 long mmp_last_written;
302 /* progress operation functions */
303 struct ext2fs_progress_ops *progress_ops;
305 /* Precomputed FS UUID checksum for seeding other checksums */
308 io_channel journal_io;
311 /* New block range allocation hooks */
312 errcode_t (*new_range)(ext2_filsys fs, int flags, blk64_t goal,
313 blk64_t len, blk64_t *pblk, blk64_t *plen);
314 void (*block_alloc_stats_range)(ext2_filsys fs, blk64_t blk, blk_t num,
317 /* hashmap for SHA of data blocks */
318 struct ext2fs_hashmap* block_sha_map;
320 const struct ext2fs_nls_table *encoding;
323 #if EXT2_FLAT_INCLUDES
324 #include "e2_bitops.h"
326 #include <ext2fs/bitops.h>
330 * 64-bit bitmap backend types
332 #define EXT2FS_BMAP64_BITARRAY 1
333 #define EXT2FS_BMAP64_RBTREE 2
334 #define EXT2FS_BMAP64_AUTODIR 3
337 * Return flags for the block iterator functions
339 #define BLOCK_CHANGED 1
340 #define BLOCK_ABORT 2
341 #define BLOCK_ERROR 4
342 #define BLOCK_INLINE_DATA_CHANGED 8
345 * Block interate flags
347 * BLOCK_FLAG_APPEND, or BLOCK_FLAG_HOLE, indicates that the interator
348 * function should be called on blocks where the block number is zero.
349 * This is used by ext2fs_expand_dir() to be able to add a new block
350 * to an inode. It can also be used for programs that want to be able
351 * to deal with files that contain "holes".
353 * BLOCK_FLAG_DEPTH_TRAVERSE indicates that the iterator function for
354 * the indirect, doubly indirect, etc. blocks should be called after
355 * all of the blocks contained in the indirect blocks are processed.
356 * This is useful if you are going to be deallocating blocks from an
359 * BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be
360 * called for data blocks only.
362 * BLOCK_FLAG_READ_ONLY is a promise by the caller that it will not
363 * modify returned block number.
365 * BLOCK_FLAG_NO_LARGE is for internal use only. It informs
366 * ext2fs_block_iterate2 that large files won't be accepted.
368 #define BLOCK_FLAG_APPEND 1
369 #define BLOCK_FLAG_HOLE 1
370 #define BLOCK_FLAG_DEPTH_TRAVERSE 2
371 #define BLOCK_FLAG_DATA_ONLY 4
372 #define BLOCK_FLAG_READ_ONLY 8
374 #define BLOCK_FLAG_NO_LARGE 0x1000
377 * Magic "block count" return values for the block iterator function.
379 #define BLOCK_COUNT_IND (-1)
380 #define BLOCK_COUNT_DIND (-2)
381 #define BLOCK_COUNT_TIND (-3)
382 #define BLOCK_COUNT_TRANSLATOR (-4)
384 #define BLOCK_ALLOC_UNKNOWN 0
385 #define BLOCK_ALLOC_DATA 1
386 #define BLOCK_ALLOC_METADATA 2
388 struct blk_alloc_ctx {
390 struct ext2_inode *inode;
397 * Flags for ext2fs_move_blocks
399 #define EXT2_BMOVE_GET_DBLIST 0x0001
400 #define EXT2_BMOVE_DEBUG 0x0002
404 * Generic (non-filesystem layout specific) extents structure
407 #define EXT2_EXTENT_FLAGS_LEAF 0x0001
408 #define EXT2_EXTENT_FLAGS_UNINIT 0x0002
409 #define EXT2_EXTENT_FLAGS_SECOND_VISIT 0x0004
411 struct ext2fs_extent {
412 blk64_t e_pblk; /* first physical block */
413 blk64_t e_lblk; /* first logical block extent covers */
414 __u32 e_len; /* number of blocks covered by extent */
415 __u32 e_flags; /* extent flags */
418 typedef struct ext2_extent_handle *ext2_extent_handle_t;
419 typedef struct ext2_extent_path *ext2_extent_path_t;
422 * Flags used by ext2fs_extent_get()
424 #define EXT2_EXTENT_CURRENT 0x0000
425 #define EXT2_EXTENT_MOVE_MASK 0x000F
426 #define EXT2_EXTENT_ROOT 0x0001
427 #define EXT2_EXTENT_LAST_LEAF 0x0002
428 #define EXT2_EXTENT_FIRST_SIB 0x0003
429 #define EXT2_EXTENT_LAST_SIB 0x0004
430 #define EXT2_EXTENT_NEXT_SIB 0x0005
431 #define EXT2_EXTENT_PREV_SIB 0x0006
432 #define EXT2_EXTENT_NEXT_LEAF 0x0007
433 #define EXT2_EXTENT_PREV_LEAF 0x0008
434 #define EXT2_EXTENT_NEXT 0x0009
435 #define EXT2_EXTENT_PREV 0x000A
436 #define EXT2_EXTENT_UP 0x000B
437 #define EXT2_EXTENT_DOWN 0x000C
438 #define EXT2_EXTENT_DOWN_AND_LAST 0x000D
441 * Flags used by ext2fs_extent_insert()
443 #define EXT2_EXTENT_INSERT_AFTER 0x0001 /* insert after handle loc'n */
444 #define EXT2_EXTENT_INSERT_NOSPLIT 0x0002 /* insert may not cause split */
447 * Flags used by ext2fs_extent_delete()
449 #define EXT2_EXTENT_DELETE_KEEP_EMPTY 0x001 /* keep node if last extent gone */
452 * Flags used by ext2fs_extent_set_bmap()
454 #define EXT2_EXTENT_SET_BMAP_UNINIT 0x0001
457 * Data structure returned by ext2fs_extent_get_info()
459 struct ext2_extent_info {
469 __u32 max_uninit_len;
473 * Flags for directory block reading and writing functions
475 #define EXT2_DIRBLOCK_V2_STRUCT 0x0001
478 * Return flags for the directory iterator functions
480 #define DIRENT_CHANGED 1
481 #define DIRENT_ABORT 2
482 #define DIRENT_ERROR 3
485 * Directory iterator flags
488 #define DIRENT_FLAG_INCLUDE_EMPTY 1
489 #define DIRENT_FLAG_INCLUDE_REMOVED 2
490 #define DIRENT_FLAG_INCLUDE_CSUM 4
491 #define DIRENT_FLAG_INCLUDE_INLINE_DATA 8
493 #define DIRENT_DOT_FILE 1
494 #define DIRENT_DOT_DOT_FILE 2
495 #define DIRENT_OTHER_FILE 3
496 #define DIRENT_DELETED_FILE 4
497 #define DIRENT_CHECKSUM 5
500 * Inode scan definitions
502 typedef struct ext2_struct_inode_scan *ext2_inode_scan;
507 #define EXT2_SF_CHK_BADBLOCKS 0x0001
508 #define EXT2_SF_BAD_INODE_BLK 0x0002
509 #define EXT2_SF_BAD_EXTRA_BYTES 0x0004
510 #define EXT2_SF_SKIP_MISSING_ITABLE 0x0008
511 #define EXT2_SF_DO_LAZY 0x0010
512 #define EXT2_SF_WARN_GARBAGE_INODES 0x0020
515 * ext2fs_check_if_mounted flags
517 #define EXT2_MF_MOUNTED 1
518 #define EXT2_MF_ISROOT 2
519 #define EXT2_MF_READONLY 4
520 #define EXT2_MF_SWAP 8
521 #define EXT2_MF_BUSY 16
524 * Ext2/linux mode flags. We define them here so that we don't need
525 * to depend on the OS's sys/stat.h, since we may be compiling on a
528 #define LINUX_S_IFMT 00170000
529 #define LINUX_S_IFSOCK 0140000
530 #define LINUX_S_IFLNK 0120000
531 #define LINUX_S_IFREG 0100000
532 #define LINUX_S_IFBLK 0060000
533 #define LINUX_S_IFDIR 0040000
534 #define LINUX_S_IFCHR 0020000
535 #define LINUX_S_IFIFO 0010000
536 #define LINUX_S_ISUID 0004000
537 #define LINUX_S_ISGID 0002000
538 #define LINUX_S_ISVTX 0001000
540 #define LINUX_S_IRWXU 00700
541 #define LINUX_S_IRUSR 00400
542 #define LINUX_S_IWUSR 00200
543 #define LINUX_S_IXUSR 00100
545 #define LINUX_S_IRWXG 00070
546 #define LINUX_S_IRGRP 00040
547 #define LINUX_S_IWGRP 00020
548 #define LINUX_S_IXGRP 00010
550 #define LINUX_S_IRWXO 00007
551 #define LINUX_S_IROTH 00004
552 #define LINUX_S_IWOTH 00002
553 #define LINUX_S_IXOTH 00001
555 #define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK)
556 #define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG)
557 #define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR)
558 #define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR)
559 #define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK)
560 #define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO)
561 #define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK)
564 * ext2 size of an inode
566 #define EXT2_I_SIZE(i) ((i)->i_size | ((__u64) (i)->i_size_high << 32))
569 * ext2_icount_t abstraction
571 #define EXT2_ICOUNT_OPT_INCREMENT 0x01
572 #define EXT2_ICOUNT_OPT_FULLMAP 0x02
574 typedef struct ext2_icount *ext2_icount_t;
577 * Flags for ext2fs_bmap
579 #define BMAP_ALLOC 0x0001
580 #define BMAP_SET 0x0002
581 #define BMAP_UNINIT 0x0004
582 #define BMAP_ZERO 0x0008
585 * Returned flags from ext2fs_bmap
587 #define BMAP_RET_UNINIT 0x0001
590 * Flags for ext2fs_read_inode2
592 #define READ_INODE_NOCSUM 0x0001
595 * Flags for ext2fs_write_inode2
597 #define WRITE_INODE_NOCSUM 0x0001
600 * Flags for imager.c functions
602 #define IMAGER_FLAG_INODEMAP 1
603 #define IMAGER_FLAG_SPARSEWRITE 2
606 * For checking structure magic numbers...
609 #define EXT2_CHECK_MAGIC(struct, code) \
610 if ((struct)->magic != (code)) return (code)
613 * Features supported by this version of the library
615 #define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\
616 EXT2_FEATURE_COMPAT_IMAGIC_INODES|\
617 EXT3_FEATURE_COMPAT_HAS_JOURNAL|\
618 EXT2_FEATURE_COMPAT_RESIZE_INODE|\
619 EXT2_FEATURE_COMPAT_DIR_INDEX|\
620 EXT2_FEATURE_COMPAT_EXT_ATTR|\
621 EXT4_FEATURE_COMPAT_SPARSE_SUPER2|\
622 EXT4_FEATURE_COMPAT_FAST_COMMIT|\
623 EXT4_FEATURE_COMPAT_STABLE_INODES)
626 #define EXT4_LIB_INCOMPAT_MMP EXT4_FEATURE_INCOMPAT_MMP
628 #define EXT4_LIB_INCOMPAT_MMP (0)
631 #define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\
632 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\
633 EXT2_FEATURE_INCOMPAT_META_BG|\
634 EXT3_FEATURE_INCOMPAT_RECOVER|\
635 EXT3_FEATURE_INCOMPAT_EXTENTS|\
636 EXT4_FEATURE_INCOMPAT_FLEX_BG|\
637 EXT4_FEATURE_INCOMPAT_EA_INODE|\
638 EXT4_LIB_INCOMPAT_MMP|\
639 EXT4_FEATURE_INCOMPAT_64BIT|\
640 EXT4_FEATURE_INCOMPAT_INLINE_DATA|\
641 EXT4_FEATURE_INCOMPAT_ENCRYPT|\
642 EXT4_FEATURE_INCOMPAT_CASEFOLD|\
643 EXT4_FEATURE_INCOMPAT_CSUM_SEED|\
644 EXT4_FEATURE_INCOMPAT_LARGEDIR)
646 #define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\
647 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|\
648 EXT2_FEATURE_RO_COMPAT_LARGE_FILE|\
649 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|\
650 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|\
651 EXT4_FEATURE_RO_COMPAT_GDT_CSUM|\
652 EXT4_FEATURE_RO_COMPAT_BIGALLOC|\
653 EXT4_FEATURE_RO_COMPAT_QUOTA|\
654 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM|\
655 EXT4_FEATURE_RO_COMPAT_READONLY |\
656 EXT4_FEATURE_RO_COMPAT_PROJECT |\
657 EXT4_FEATURE_RO_COMPAT_SHARED_BLOCKS |\
658 EXT4_FEATURE_RO_COMPAT_VERITY)
661 * These features are only allowed if EXT2_FLAG_SOFTSUPP_FEATURES is passed
664 #define EXT2_LIB_SOFTSUPP_INCOMPAT (0)
665 #define EXT2_LIB_SOFTSUPP_RO_COMPAT (EXT4_FEATURE_RO_COMPAT_REPLICA)
668 /* Translate a block number to a cluster number */
669 #define EXT2FS_CLUSTER_RATIO(fs) (1 << (fs)->cluster_ratio_bits)
670 #define EXT2FS_CLUSTER_MASK(fs) (EXT2FS_CLUSTER_RATIO(fs) - 1)
671 #define EXT2FS_B2C(fs, blk) ((blk) >> (fs)->cluster_ratio_bits)
672 /* Translate a cluster number to a block number */
673 #define EXT2FS_C2B(fs, cluster) ((cluster) << (fs)->cluster_ratio_bits)
674 /* Translate # of blks to # of clusters */
675 #define EXT2FS_NUM_B2C(fs, blks) (((blks) + EXT2FS_CLUSTER_MASK(fs)) >> \
676 (fs)->cluster_ratio_bits)
678 #if defined(HAVE_FSTAT64) && !defined(__OSX_AVAILABLE_BUT_DEPRECATED)
679 typedef struct stat64 ext2fs_struct_stat;
681 typedef struct stat ext2fs_struct_stat;
685 * For ext2fs_close2() and ext2fs_flush2(), this flag allows you to
686 * avoid the fsync call.
688 #define EXT2_FLAG_FLUSH_NO_SYNC 1
691 * Modify and iterate extended attributes
693 struct ext2_xattr_handle;
694 #define XATTR_ABORT 1
695 #define XATTR_CHANGED 2
698 * flags for ext2fs_rw_bitmaps()
700 #define EXT2FS_BITMAPS_WRITE 0x0001
701 #define EXT2FS_BITMAPS_BLOCK 0x0002
702 #define EXT2FS_BITMAPS_INODE 0x0004
703 #define EXT2FS_BITMAPS_VALID_FLAGS 0x0007
706 * function prototypes
708 static inline int ext2fs_has_group_desc_csum(ext2_filsys fs)
710 return ext2fs_has_feature_metadata_csum(fs->super) ||
711 ext2fs_has_feature_gdt_csum(fs->super);
714 /* The LARGE_FILE feature should be set if we have stored files 2GB+ in size */
715 static inline int ext2fs_needs_large_file_feature(unsigned long long file_size)
717 return file_size >= 0x80000000ULL;
721 extern void ext2fs_clear_block_uninit(ext2_filsys fs, dgrp_t group);
722 extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode,
723 ext2fs_inode_bitmap map, ext2_ino_t *ret);
724 extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal,
725 ext2fs_block_bitmap map, blk_t *ret);
726 extern errcode_t ext2fs_new_block2(ext2_filsys fs, blk64_t goal,
727 ext2fs_block_bitmap map, blk64_t *ret);
728 extern errcode_t ext2fs_new_block3(ext2_filsys fs, blk64_t goal,
729 ext2fs_block_bitmap map, blk64_t *ret,
730 struct blk_alloc_ctx *ctx);
731 extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start,
732 blk_t finish, int num,
733 ext2fs_block_bitmap map,
735 extern errcode_t ext2fs_get_free_blocks2(ext2_filsys fs, blk64_t start,
736 blk64_t finish, int num,
737 ext2fs_block_bitmap map,
739 extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal,
740 char *block_buf, blk_t *ret);
741 extern errcode_t ext2fs_alloc_block2(ext2_filsys fs, blk64_t goal,
742 char *block_buf, blk64_t *ret);
743 extern errcode_t ext2fs_alloc_block3(ext2_filsys fs, blk64_t goal,
744 char *block_buf, blk64_t *ret,
745 struct blk_alloc_ctx *ctx);
747 extern void ext2fs_set_alloc_block_callback(ext2_filsys fs,
748 errcode_t (*func)(ext2_filsys fs,
751 errcode_t (**old)(ext2_filsys fs,
754 blk64_t ext2fs_find_inode_goal(ext2_filsys fs, ext2_ino_t ino,
755 struct ext2_inode *inode, blk64_t lblk);
756 extern void ext2fs_set_new_range_callback(ext2_filsys fs,
757 errcode_t (*func)(ext2_filsys fs, int flags, blk64_t goal,
758 blk64_t len, blk64_t *pblk, blk64_t *plen),
759 errcode_t (**old)(ext2_filsys fs, int flags, blk64_t goal,
760 blk64_t len, blk64_t *pblk, blk64_t *plen));
761 extern void ext2fs_set_block_alloc_stats_range_callback(ext2_filsys fs,
762 void (*func)(ext2_filsys fs, blk64_t blk,
763 blk_t num, int inuse),
764 void (**old)(ext2_filsys fs, blk64_t blk,
765 blk_t num, int inuse));
766 #define EXT2_NEWRANGE_FIXED_GOAL (0x1)
767 #define EXT2_NEWRANGE_MIN_LENGTH (0x2)
768 #define EXT2_NEWRANGE_ALL_FLAGS (0x3)
769 errcode_t ext2fs_new_range(ext2_filsys fs, int flags, blk64_t goal,
770 blk64_t len, ext2fs_block_bitmap map, blk64_t *pblk,
772 #define EXT2_ALLOCRANGE_FIXED_GOAL (0x1)
773 #define EXT2_ALLOCRANGE_ZERO_BLOCKS (0x2)
774 #define EXT2_ALLOCRANGE_ALL_FLAGS (0x3)
775 errcode_t ext2fs_alloc_range(ext2_filsys fs, int flags, blk64_t goal,
776 blk_t len, blk64_t *ret);
779 extern int ext2fs_reserve_super_and_bgd(ext2_filsys fs,
781 ext2fs_block_bitmap bmap);
782 extern void ext2fs_set_block_alloc_stats_callback(ext2_filsys fs,
783 void (*func)(ext2_filsys fs,
786 void (**old)(ext2_filsys fs,
791 void ext2fs_inode_alloc_stats(ext2_filsys fs, ext2_ino_t ino, int inuse);
792 void ext2fs_inode_alloc_stats2(ext2_filsys fs, ext2_ino_t ino,
793 int inuse, int isdir);
794 void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse);
795 void ext2fs_block_alloc_stats2(ext2_filsys fs, blk64_t blk, int inuse);
796 void ext2fs_block_alloc_stats_range(ext2_filsys fs, blk64_t blk,
797 blk_t num, int inuse);
800 extern errcode_t ext2fs_allocate_tables(ext2_filsys fs);
801 extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group,
802 ext2fs_block_bitmap bmap);
805 extern errcode_t ext2fs_u32_list_create(ext2_u32_list *ret, int size);
806 extern errcode_t ext2fs_u32_list_add(ext2_u32_list bb, __u32 blk);
807 extern int ext2fs_u32_list_find(ext2_u32_list bb, __u32 blk);
808 extern int ext2fs_u32_list_test(ext2_u32_list bb, blk_t blk);
809 extern errcode_t ext2fs_u32_list_iterate_begin(ext2_u32_list bb,
810 ext2_u32_iterate *ret);
811 extern int ext2fs_u32_list_iterate(ext2_u32_iterate iter, blk_t *blk);
812 extern void ext2fs_u32_list_iterate_end(ext2_u32_iterate iter);
813 extern errcode_t ext2fs_u32_copy(ext2_u32_list src, ext2_u32_list *dest);
814 extern int ext2fs_u32_list_equal(ext2_u32_list bb1, ext2_u32_list bb2);
816 extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret,
818 extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb,
820 extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb,
822 extern int ext2fs_u32_list_del(ext2_u32_list bb, __u32 blk);
823 extern void ext2fs_badblocks_list_del(ext2_u32_list bb, __u32 blk);
825 ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb,
826 ext2_badblocks_iterate *ret);
827 extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter,
829 extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter);
830 extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src,
831 ext2_badblocks_list *dest);
832 extern errcode_t ext2fs_badblocks_merge(ext2_badblocks_list src,
833 ext2_badblocks_list dest);
834 extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1,
835 ext2_badblocks_list bb2);
836 extern int ext2fs_u32_list_count(ext2_u32_list bb);
839 extern errcode_t badblocks_list_create(badblocks_list *ret, int size);
840 extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk);
841 extern int badblocks_list_test(badblocks_list bb, blk_t blk);
842 extern errcode_t badblocks_list_iterate_begin(badblocks_list bb,
843 badblocks_iterate *ret);
844 extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk);
845 extern void badblocks_list_iterate_end(badblocks_iterate iter);
846 extern void badblocks_list_free(badblocks_list bb);
849 extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs,
850 ext2_badblocks_list bb_list);
853 extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap);
854 extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap);
855 extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src,
856 ext2fs_generic_bitmap *dest);
857 errcode_t ext2fs_merge_bitmap(ext2fs_generic_bitmap src,
858 ext2fs_generic_bitmap dest,
859 ext2fs_generic_bitmap dup,
860 ext2fs_generic_bitmap dup_allowed);
861 extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs,
863 ext2fs_block_bitmap *ret);
864 extern errcode_t ext2fs_allocate_subcluster_bitmap(ext2_filsys fs,
866 ext2fs_block_bitmap *ret);
867 extern int ext2fs_get_bitmap_granularity(ext2fs_block_bitmap bitmap);
868 extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs,
870 ext2fs_inode_bitmap *ret);
871 extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap,
872 ext2_ino_t end, ext2_ino_t *oend);
873 extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap,
874 blk_t end, blk_t *oend);
875 extern errcode_t ext2fs_fudge_block_bitmap_end2(ext2fs_block_bitmap bitmap,
876 blk64_t end, blk64_t *oend);
877 extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap);
878 extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap);
879 extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end,
880 ext2fs_inode_bitmap bmap);
881 extern errcode_t ext2fs_resize_inode_bitmap2(__u64 new_end,
883 ext2fs_inode_bitmap bmap);
884 extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end,
885 ext2fs_block_bitmap bmap);
886 extern errcode_t ext2fs_resize_block_bitmap2(__u64 new_end,
888 ext2fs_block_bitmap bmap);
889 extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1,
890 ext2fs_block_bitmap bm2);
891 extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1,
892 ext2fs_inode_bitmap bm2);
893 extern errcode_t ext2fs_set_inode_bitmap_range(ext2fs_inode_bitmap bmap,
894 ext2_ino_t start, unsigned int num,
896 extern errcode_t ext2fs_set_inode_bitmap_range2(ext2fs_inode_bitmap bmap,
897 __u64 start, size_t num,
899 extern errcode_t ext2fs_get_inode_bitmap_range(ext2fs_inode_bitmap bmap,
900 ext2_ino_t start, unsigned int num,
902 extern errcode_t ext2fs_get_inode_bitmap_range2(ext2fs_inode_bitmap bmap,
903 __u64 start, size_t num,
905 extern errcode_t ext2fs_set_block_bitmap_range(ext2fs_block_bitmap bmap,
906 blk_t start, unsigned int num,
908 extern errcode_t ext2fs_set_block_bitmap_range2(ext2fs_block_bitmap bmap,
909 blk64_t start, size_t num,
911 extern errcode_t ext2fs_get_block_bitmap_range(ext2fs_block_bitmap bmap,
912 blk_t start, unsigned int num,
914 extern errcode_t ext2fs_get_block_bitmap_range2(ext2fs_block_bitmap bmap,
915 blk64_t start, size_t num,
919 extern __u32 ext2fs_inode_bitmap_checksum(ext2_filsys fs, dgrp_t group);
920 extern __u32 ext2fs_block_bitmap_checksum(ext2_filsys fs, dgrp_t group);
921 extern dgrp_t ext2fs_group_of_blk2(ext2_filsys fs, blk64_t);
922 extern blk64_t ext2fs_group_first_block2(ext2_filsys fs, dgrp_t group);
923 extern blk64_t ext2fs_group_last_block2(ext2_filsys fs, dgrp_t group);
924 extern int ext2fs_group_blocks_count(ext2_filsys fs, dgrp_t group);
925 extern blk64_t ext2fs_inode_data_blocks2(ext2_filsys fs,
926 struct ext2_inode *inode);
927 extern blk64_t ext2fs_inode_i_blocks(ext2_filsys fs,
928 struct ext2_inode *inode);
929 extern blk64_t ext2fs_get_stat_i_blocks(ext2_filsys fs,
930 struct ext2_inode *inode);
931 extern blk64_t ext2fs_blocks_count(struct ext2_super_block *super);
932 extern void ext2fs_blocks_count_set(struct ext2_super_block *super,
934 extern void ext2fs_blocks_count_add(struct ext2_super_block *super,
936 extern blk64_t ext2fs_r_blocks_count(struct ext2_super_block *super);
937 extern void ext2fs_r_blocks_count_set(struct ext2_super_block *super,
939 extern void ext2fs_r_blocks_count_add(struct ext2_super_block *super,
941 extern blk64_t ext2fs_free_blocks_count(struct ext2_super_block *super);
942 extern void ext2fs_free_blocks_count_set(struct ext2_super_block *super,
944 extern void ext2fs_free_blocks_count_add(struct ext2_super_block *super,
946 /* Block group descriptor accessor functions */
947 extern struct ext2_group_desc *ext2fs_group_desc(ext2_filsys fs,
948 struct opaque_ext2_group_desc *gdp,
950 extern blk64_t ext2fs_block_bitmap_csum(ext2_filsys fs, dgrp_t group);
951 extern blk64_t ext2fs_block_bitmap_loc(ext2_filsys fs, dgrp_t group);
952 extern void ext2fs_block_bitmap_loc_set(ext2_filsys fs, dgrp_t group,
954 extern __u32 ext2fs_inode_bitmap_csum(ext2_filsys fs, dgrp_t group);
955 extern blk64_t ext2fs_inode_bitmap_loc(ext2_filsys fs, dgrp_t group);
956 extern void ext2fs_inode_bitmap_loc_set(ext2_filsys fs, dgrp_t group,
958 extern blk64_t ext2fs_inode_table_loc(ext2_filsys fs, dgrp_t group);
959 extern void ext2fs_inode_table_loc_set(ext2_filsys fs, dgrp_t group,
961 extern __u32 ext2fs_bg_free_blocks_count(ext2_filsys fs, dgrp_t group);
962 extern void ext2fs_bg_free_blocks_count_set(ext2_filsys fs, dgrp_t group,
964 extern __u32 ext2fs_bg_free_inodes_count(ext2_filsys fs, dgrp_t group);
965 extern void ext2fs_bg_free_inodes_count_set(ext2_filsys fs, dgrp_t group,
967 extern __u32 ext2fs_bg_used_dirs_count(ext2_filsys fs, dgrp_t group);
968 extern void ext2fs_bg_used_dirs_count_set(ext2_filsys fs, dgrp_t group,
970 extern __u32 ext2fs_bg_itable_unused(ext2_filsys fs, dgrp_t group);
971 extern void ext2fs_bg_itable_unused_set(ext2_filsys fs, dgrp_t group,
973 extern __u16 ext2fs_bg_flags(ext2_filsys fs, dgrp_t group);
974 extern void ext2fs_bg_flags_zap(ext2_filsys fs, dgrp_t group);
975 extern int ext2fs_bg_flags_test(ext2_filsys fs, dgrp_t group, __u16 bg_flag);
976 extern void ext2fs_bg_flags_set(ext2_filsys fs, dgrp_t group, __u16 bg_flags);
977 extern void ext2fs_bg_flags_clear(ext2_filsys fs, dgrp_t group, __u16 bg_flags);
978 extern __u16 ext2fs_bg_checksum(ext2_filsys fs, dgrp_t group);
979 extern void ext2fs_bg_checksum_set(ext2_filsys fs, dgrp_t group, __u16 checksum);
980 extern blk64_t ext2fs_file_acl_block(ext2_filsys fs,
981 const struct ext2_inode *inode);
982 extern void ext2fs_file_acl_block_set(ext2_filsys fs,
983 struct ext2_inode *inode, blk64_t blk);
984 extern errcode_t ext2fs_inode_size_set(ext2_filsys fs, struct ext2_inode *inode,
988 extern errcode_t ext2fs_block_iterate(ext2_filsys fs,
992 int (*func)(ext2_filsys fs,
997 errcode_t ext2fs_block_iterate2(ext2_filsys fs,
1001 int (*func)(ext2_filsys fs,
1003 e2_blkcnt_t blockcnt,
1008 errcode_t ext2fs_block_iterate3(ext2_filsys fs,
1012 int (*func)(ext2_filsys fs,
1014 e2_blkcnt_t blockcnt,
1021 extern errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino,
1022 struct ext2_inode *inode,
1023 char *block_buf, int bmap_flags,
1024 blk_t block, blk_t *phys_blk);
1025 extern errcode_t ext2fs_bmap2(ext2_filsys fs, ext2_ino_t ino,
1026 struct ext2_inode *inode,
1027 char *block_buf, int bmap_flags, blk64_t block,
1028 int *ret_flags, blk64_t *phys_blk);
1029 errcode_t ext2fs_map_cluster_block(ext2_filsys fs, ext2_ino_t ino,
1030 struct ext2_inode *inode, blk64_t lblk,
1035 extern errcode_t ext2fs_move_blocks(ext2_filsys fs,
1036 ext2fs_block_bitmap reserve,
1037 ext2fs_block_bitmap alloc_map,
1042 extern errcode_t ext2fs_check_desc(ext2_filsys fs);
1045 extern errcode_t ext2fs_close(ext2_filsys fs);
1046 extern errcode_t ext2fs_close2(ext2_filsys fs, int flags);
1047 extern errcode_t ext2fs_close_free(ext2_filsys *fs);
1048 extern errcode_t ext2fs_flush(ext2_filsys fs);
1049 extern errcode_t ext2fs_flush2(ext2_filsys fs, int flags);
1050 extern int ext2fs_bg_has_super(ext2_filsys fs, dgrp_t group_block);
1051 extern errcode_t ext2fs_super_and_bgd_loc2(ext2_filsys fs,
1053 blk64_t *ret_super_blk,
1054 blk64_t *ret_old_desc_blk,
1055 blk64_t *ret_new_desc_blk,
1056 blk_t *ret_used_blks);
1057 extern int ext2fs_super_and_bgd_loc(ext2_filsys fs,
1059 blk_t *ret_super_blk,
1060 blk_t *ret_old_desc_blk,
1061 blk_t *ret_new_desc_blk,
1063 extern void ext2fs_update_dynamic_rev(ext2_filsys fs);
1066 extern __u32 ext2fs_crc32_be(__u32 crc, unsigned char const *p, size_t len);
1067 extern __u32 ext2fs_crc32c_le(__u32 crc, unsigned char const *p, size_t len);
1070 extern void ext2fs_init_csum_seed(ext2_filsys fs);
1071 extern errcode_t ext2fs_mmp_csum_set(ext2_filsys fs, struct mmp_struct *mmp);
1072 extern int ext2fs_mmp_csum_verify(ext2_filsys, struct mmp_struct *mmp);
1073 extern int ext2fs_verify_csum_type(ext2_filsys fs, struct ext2_super_block *sb);
1074 extern errcode_t ext2fs_superblock_csum_set(ext2_filsys fs,
1075 struct ext2_super_block *sb);
1076 extern int ext2fs_superblock_csum_verify(ext2_filsys fs,
1077 struct ext2_super_block *sb);
1078 extern errcode_t ext2fs_ext_attr_block_csum_set(ext2_filsys fs,
1079 ext2_ino_t inum, blk64_t block,
1080 struct ext2_ext_attr_header *hdr);
1081 extern int ext2fs_ext_attr_block_csum_verify(ext2_filsys fs, ext2_ino_t inum,
1083 struct ext2_ext_attr_header *hdr);
1084 #define EXT2_DIRENT_TAIL(block, blocksize) \
1085 ((struct ext2_dir_entry_tail *)(((char *)(block)) + \
1086 (blocksize) - sizeof(struct ext2_dir_entry_tail)))
1088 extern void ext2fs_initialize_dirent_tail(ext2_filsys fs,
1089 struct ext2_dir_entry_tail *t);
1090 extern int ext2fs_dirent_has_tail(ext2_filsys fs,
1091 struct ext2_dir_entry *dirent);
1092 extern int ext2fs_dirent_csum_verify(ext2_filsys fs, ext2_ino_t inum,
1093 struct ext2_dir_entry *dirent);
1094 extern int ext2fs_dir_block_csum_verify(ext2_filsys fs, ext2_ino_t inum,
1095 struct ext2_dir_entry *dirent);
1096 extern errcode_t ext2fs_dir_block_csum_set(ext2_filsys fs, ext2_ino_t inum,
1097 struct ext2_dir_entry *dirent);
1098 extern errcode_t ext2fs_get_dx_countlimit(ext2_filsys fs,
1099 struct ext2_dir_entry *dirent,
1100 struct ext2_dx_countlimit **cc,
1102 extern errcode_t ext2fs_dx_csum(ext2_filsys fs, ext2_ino_t inum,
1103 struct ext2_dir_entry *dirent,
1104 __u32 *crc, struct ext2_dx_tail **ret_t);
1105 extern errcode_t ext2fs_extent_block_csum_set(ext2_filsys fs,
1107 struct ext3_extent_header *eh);
1108 extern int ext2fs_extent_block_csum_verify(ext2_filsys fs,
1110 struct ext3_extent_header *eh);
1111 extern errcode_t ext2fs_block_bitmap_csum_set(ext2_filsys fs, dgrp_t group,
1112 char *bitmap, int size);
1113 extern int ext2fs_block_bitmap_csum_verify(ext2_filsys fs, dgrp_t group,
1114 char *bitmap, int size);
1115 extern errcode_t ext2fs_inode_bitmap_csum_set(ext2_filsys fs, dgrp_t group,
1116 char *bitmap, int size);
1117 extern int ext2fs_inode_bitmap_csum_verify(ext2_filsys fs, dgrp_t group,
1118 char *bitmap, int size);
1119 extern errcode_t ext2fs_inode_csum_set(ext2_filsys fs, ext2_ino_t inum,
1120 struct ext2_inode_large *inode);
1121 extern int ext2fs_inode_csum_verify(ext2_filsys fs, ext2_ino_t inum,
1122 struct ext2_inode_large *inode);
1123 extern void ext2fs_group_desc_csum_set(ext2_filsys fs, dgrp_t group);
1124 extern int ext2fs_group_desc_csum_verify(ext2_filsys fs, dgrp_t group);
1125 extern errcode_t ext2fs_set_gdt_csum(ext2_filsys fs);
1126 extern __u16 ext2fs_group_desc_csum(ext2_filsys fs, dgrp_t group);
1129 extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist);
1130 extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ext2_ino_t ino,
1131 blk_t blk, int blockcnt);
1132 extern errcode_t ext2fs_add_dir_block2(ext2_dblist dblist, ext2_ino_t ino,
1133 blk64_t blk, e2_blkcnt_t blockcnt);
1134 extern errcode_t ext2fs_merge_dblist(ext2_dblist src, ext2_dblist dest);
1135 extern void ext2fs_dblist_sort(ext2_dblist dblist,
1136 EXT2_QSORT_TYPE (*sortfunc)(const void *,
1138 extern void ext2fs_dblist_sort2(ext2_dblist dblist,
1139 EXT2_QSORT_TYPE (*sortfunc)(const void *,
1141 extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist,
1142 int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info,
1145 extern errcode_t ext2fs_dblist_iterate2(ext2_dblist dblist,
1146 int (*func)(ext2_filsys fs, struct ext2_db_entry2 *db_info,
1149 extern errcode_t ext2fs_dblist_iterate3(ext2_dblist dblist,
1150 int (*func)(ext2_filsys fs, struct ext2_db_entry2 *db_info,
1152 unsigned long long start,
1153 unsigned long long count,
1155 extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ext2_ino_t ino,
1156 blk_t blk, int blockcnt);
1157 extern errcode_t ext2fs_set_dir_block2(ext2_dblist dblist, ext2_ino_t ino,
1158 blk64_t blk, e2_blkcnt_t blockcnt);
1159 extern errcode_t ext2fs_copy_dblist(ext2_dblist src,
1161 extern int ext2fs_dblist_count(ext2_dblist dblist);
1162 extern blk64_t ext2fs_dblist_count2(ext2_dblist dblist);
1163 extern errcode_t ext2fs_dblist_get_last(ext2_dblist dblist,
1164 struct ext2_db_entry **entry);
1165 extern errcode_t ext2fs_dblist_get_last2(ext2_dblist dblist,
1166 struct ext2_db_entry2 **entry);
1167 extern errcode_t ext2fs_dblist_drop_last(ext2_dblist dblist);
1171 ext2fs_dblist_dir_iterate(ext2_dblist dblist,
1174 int (*func)(ext2_ino_t dir,
1176 struct ext2_dir_entry *dirent,
1184 /* digest_encode.c */
1185 #define EXT2FS_DIGEST_SIZE EXT2FS_SHA256_LENGTH
1186 extern int ext2fs_digest_encode(const char *src, int len, char *dst);
1187 extern int ext2fs_digest_decode(const char *src, int len, char *dst);
1191 extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block,
1193 extern errcode_t ext2fs_read_dir_block2(ext2_filsys fs, blk_t block,
1194 void *buf, int flags);
1195 extern errcode_t ext2fs_read_dir_block3(ext2_filsys fs, blk64_t block,
1196 void *buf, int flags);
1197 extern errcode_t ext2fs_read_dir_block4(ext2_filsys fs, blk64_t block,
1198 void *buf, int flags, ext2_ino_t ino);
1199 extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block,
1201 extern errcode_t ext2fs_write_dir_block2(ext2_filsys fs, blk_t block,
1202 void *buf, int flags);
1203 extern errcode_t ext2fs_write_dir_block3(ext2_filsys fs, blk64_t block,
1204 void *buf, int flags);
1205 extern errcode_t ext2fs_write_dir_block4(ext2_filsys fs, blk64_t block,
1206 void *buf, int flags, ext2_ino_t ino);
1209 extern errcode_t ext2fs_dirhash(int version, const char *name, int len,
1211 ext2_dirhash_t *ret_hash,
1212 ext2_dirhash_t *ret_minor_hash);
1214 extern errcode_t ext2fs_dirhash2(int version, const char *name, int len,
1215 const struct ext2fs_nls_table *charset,
1218 ext2_dirhash_t *ret_hash,
1219 ext2_dirhash_t *ret_minor_hash);
1222 extern errcode_t ext2fs_get_rec_len(ext2_filsys fs,
1223 struct ext2_dir_entry *dirent,
1224 unsigned int *rec_len);
1225 extern errcode_t ext2fs_set_rec_len(ext2_filsys fs,
1227 struct ext2_dir_entry *dirent);
1228 extern errcode_t ext2fs_dir_iterate(ext2_filsys fs,
1232 int (*func)(struct ext2_dir_entry *dirent,
1238 extern errcode_t ext2fs_dir_iterate2(ext2_filsys fs,
1242 int (*func)(ext2_ino_t dir,
1244 struct ext2_dir_entry *dirent,
1252 extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest);
1255 extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir);
1258 extern __u32 ext2fs_ext_attr_hash_entry(struct ext2_ext_attr_entry *entry,
1260 extern errcode_t ext2fs_ext_attr_hash_entry2(ext2_filsys fs,
1261 struct ext2_ext_attr_entry *entry,
1262 void *data, __u32 *hash);
1263 extern errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf);
1264 extern errcode_t ext2fs_read_ext_attr2(ext2_filsys fs, blk64_t block,
1266 extern errcode_t ext2fs_read_ext_attr3(ext2_filsys fs, blk64_t block,
1267 void *buf, ext2_ino_t inum);
1268 extern errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block,
1270 extern errcode_t ext2fs_write_ext_attr2(ext2_filsys fs, blk64_t block,
1272 extern errcode_t ext2fs_write_ext_attr3(ext2_filsys fs, blk64_t block,
1273 void *buf, ext2_ino_t inum);
1274 extern errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk,
1276 int adjust, __u32 *newcount);
1277 extern errcode_t ext2fs_adjust_ea_refcount2(ext2_filsys fs, blk64_t blk,
1279 int adjust, __u32 *newcount);
1280 extern errcode_t ext2fs_adjust_ea_refcount3(ext2_filsys fs, blk64_t blk,
1282 int adjust, __u32 *newcount,
1284 errcode_t ext2fs_xattrs_write(struct ext2_xattr_handle *handle);
1285 errcode_t ext2fs_xattrs_read(struct ext2_xattr_handle *handle);
1286 errcode_t ext2fs_xattrs_iterate(struct ext2_xattr_handle *h,
1287 int (*func)(char *name, char *value,
1288 size_t value_len, void *data),
1290 errcode_t ext2fs_xattr_get(struct ext2_xattr_handle *h, const char *key,
1291 void **value, size_t *value_len);
1292 errcode_t ext2fs_xattr_set(struct ext2_xattr_handle *handle,
1296 errcode_t ext2fs_xattr_remove(struct ext2_xattr_handle *handle,
1298 errcode_t ext2fs_xattrs_open(ext2_filsys fs, ext2_ino_t ino,
1299 struct ext2_xattr_handle **handle);
1300 errcode_t ext2fs_xattrs_close(struct ext2_xattr_handle **handle);
1301 errcode_t ext2fs_free_ext_attr(ext2_filsys fs, ext2_ino_t ino,
1302 struct ext2_inode_large *inode);
1303 errcode_t ext2fs_xattrs_count(struct ext2_xattr_handle *handle, size_t *count);
1304 errcode_t ext2fs_xattr_inode_max_size(ext2_filsys fs, ext2_ino_t ino,
1306 #define XATTR_HANDLE_FLAG_RAW 0x0001
1307 errcode_t ext2fs_xattrs_flags(struct ext2_xattr_handle *handle,
1308 unsigned int *new_flags, unsigned int *old_flags);
1309 extern void ext2fs_ext_attr_block_rehash(struct ext2_ext_attr_header *header,
1310 struct ext2_ext_attr_entry *end);
1311 extern __u32 ext2fs_get_ea_inode_hash(struct ext2_inode *inode);
1312 extern void ext2fs_set_ea_inode_hash(struct ext2_inode *inode, __u32 hash);
1313 extern __u64 ext2fs_get_ea_inode_ref(struct ext2_inode *inode);
1314 extern void ext2fs_set_ea_inode_ref(struct ext2_inode *inode, __u64 ref_count);
1317 extern errcode_t ext2fs_extent_header_verify(void *ptr, int size);
1318 extern errcode_t ext2fs_extent_open(ext2_filsys fs, ext2_ino_t ino,
1319 ext2_extent_handle_t *handle);
1320 extern errcode_t ext2fs_extent_open2(ext2_filsys fs, ext2_ino_t ino,
1321 struct ext2_inode *inode,
1322 ext2_extent_handle_t *ret_handle);
1323 extern void ext2fs_extent_free(ext2_extent_handle_t handle);
1324 extern errcode_t ext2fs_extent_get(ext2_extent_handle_t handle,
1325 int flags, struct ext2fs_extent *extent);
1326 extern errcode_t ext2fs_extent_node_split(ext2_extent_handle_t handle);
1327 extern errcode_t ext2fs_extent_replace(ext2_extent_handle_t handle, int flags,
1328 struct ext2fs_extent *extent);
1329 extern errcode_t ext2fs_extent_insert(ext2_extent_handle_t handle, int flags,
1330 struct ext2fs_extent *extent);
1331 extern errcode_t ext2fs_extent_set_bmap(ext2_extent_handle_t handle,
1332 blk64_t logical, blk64_t physical,
1334 extern errcode_t ext2fs_extent_delete(ext2_extent_handle_t handle, int flags);
1335 extern errcode_t ext2fs_extent_get_info(ext2_extent_handle_t handle,
1336 struct ext2_extent_info *info);
1337 extern errcode_t ext2fs_extent_goto(ext2_extent_handle_t handle,
1339 extern errcode_t ext2fs_extent_goto2(ext2_extent_handle_t handle,
1340 int leaf_level, blk64_t blk);
1341 extern errcode_t ext2fs_extent_fix_parents(ext2_extent_handle_t handle);
1342 extern size_t ext2fs_max_extent_depth(ext2_extent_handle_t handle);
1343 extern errcode_t ext2fs_fix_extents_checksums(ext2_filsys fs, ext2_ino_t ino,
1344 struct ext2_inode *inode);
1345 extern errcode_t ext2fs_count_blocks(ext2_filsys fs, ext2_ino_t ino,
1346 struct ext2_inode *inode, blk64_t *ret_count);
1347 extern errcode_t ext2fs_decode_extent(struct ext2fs_extent *to, void *from,
1351 #define EXT2_FALLOCATE_ZERO_BLOCKS (0x1)
1352 #define EXT2_FALLOCATE_FORCE_INIT (0x2)
1353 #define EXT2_FALLOCATE_FORCE_UNINIT (0x4)
1354 #define EXT2_FALLOCATE_INIT_BEYOND_EOF (0x8)
1355 #define EXT2_FALLOCATE_ALL_FLAGS (0xF)
1356 errcode_t ext2fs_fallocate(ext2_filsys fs, int flags, ext2_ino_t ino,
1357 struct ext2_inode *inode, blk64_t goal,
1358 blk64_t start, blk64_t len);
1361 extern errcode_t ext2fs_file_open2(ext2_filsys fs, ext2_ino_t ino,
1362 struct ext2_inode *inode,
1363 int flags, ext2_file_t *ret);
1364 extern errcode_t ext2fs_file_open(ext2_filsys fs, ext2_ino_t ino,
1365 int flags, ext2_file_t *ret);
1366 extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file);
1367 struct ext2_inode *ext2fs_file_get_inode(ext2_file_t file);
1368 extern ext2_ino_t ext2fs_file_get_inode_num(ext2_file_t file);
1369 extern errcode_t ext2fs_file_close(ext2_file_t file);
1370 extern errcode_t ext2fs_file_flush(ext2_file_t file);
1371 extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf,
1372 unsigned int wanted, unsigned int *got);
1373 extern errcode_t ext2fs_file_write(ext2_file_t file, const void *buf,
1374 unsigned int nbytes, unsigned int *written);
1375 extern errcode_t ext2fs_file_llseek(ext2_file_t file, __u64 offset,
1376 int whence, __u64 *ret_pos);
1377 extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset,
1378 int whence, ext2_off_t *ret_pos);
1379 errcode_t ext2fs_file_get_lsize(ext2_file_t file, __u64 *ret_size);
1380 extern ext2_off_t ext2fs_file_get_size(ext2_file_t file);
1381 extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size);
1382 extern errcode_t ext2fs_file_set_size2(ext2_file_t file, ext2_off64_t size);
1385 extern char *ext2fs_find_block_device(dev_t device);
1388 extern errcode_t ext2fs_sync_device(int fd, int flushb);
1391 extern void ext2fs_free(ext2_filsys fs);
1392 extern void ext2fs_free_dblist(ext2_dblist dblist);
1393 extern void ext2fs_badblocks_list_free(ext2_badblocks_list bb);
1394 extern void ext2fs_u32_list_free(ext2_u32_list bb);
1397 extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap);
1398 extern errcode_t ext2fs_make_generic_bitmap(errcode_t magic, ext2_filsys fs,
1399 __u32 start, __u32 end,
1401 const char *descr, char *init_map,
1402 ext2fs_generic_bitmap *ret);
1403 extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start,
1407 ext2fs_generic_bitmap *ret);
1408 extern errcode_t ext2fs_copy_generic_bitmap(ext2fs_generic_bitmap src,
1409 ext2fs_generic_bitmap *dest);
1410 extern void ext2fs_clear_generic_bitmap(ext2fs_generic_bitmap bitmap);
1411 extern errcode_t ext2fs_fudge_generic_bitmap_end(ext2fs_inode_bitmap bitmap,
1416 extern void ext2fs_set_generic_bitmap_padding(ext2fs_generic_bitmap map);
1417 extern errcode_t ext2fs_resize_generic_bitmap(errcode_t magic,
1420 ext2fs_generic_bitmap bmap);
1421 extern errcode_t ext2fs_compare_generic_bitmap(errcode_t magic, errcode_t neq,
1422 ext2fs_generic_bitmap bm1,
1423 ext2fs_generic_bitmap bm2);
1424 extern errcode_t ext2fs_get_generic_bitmap_range(ext2fs_generic_bitmap bmap,
1426 __u32 start, __u32 num,
1428 extern errcode_t ext2fs_set_generic_bitmap_range(ext2fs_generic_bitmap bmap,
1430 __u32 start, __u32 num,
1432 extern errcode_t ext2fs_find_first_zero_generic_bitmap(ext2fs_generic_bitmap bitmap,
1433 __u32 start, __u32 end,
1435 extern errcode_t ext2fs_find_first_set_generic_bitmap(ext2fs_generic_bitmap bitmap,
1436 __u32 start, __u32 end,
1439 /* gen_bitmap64.c */
1440 void ext2fs_free_generic_bmap(ext2fs_generic_bitmap bmap);
1441 errcode_t ext2fs_alloc_generic_bmap(ext2_filsys fs, errcode_t magic,
1442 int type, __u64 start, __u64 end,
1445 ext2fs_generic_bitmap *ret);
1446 errcode_t ext2fs_copy_generic_bmap(ext2fs_generic_bitmap src,
1447 ext2fs_generic_bitmap *dest);
1448 void ext2fs_clear_generic_bmap(ext2fs_generic_bitmap bitmap);
1449 errcode_t ext2fs_fudge_generic_bmap_end(ext2fs_generic_bitmap bitmap,
1451 __u64 end, __u64 *oend);
1452 void ext2fs_set_generic_bmap_padding(ext2fs_generic_bitmap bmap);
1453 errcode_t ext2fs_resize_generic_bmap(ext2fs_generic_bitmap bmap,
1455 __u64 new_real_end);
1456 errcode_t ext2fs_merge_generic_bmap(ext2fs_generic_bitmap gen_src,
1457 ext2fs_generic_bitmap gen_dest,
1458 ext2fs_generic_bitmap gen_dup,
1459 ext2fs_generic_bitmap dup_allowed);
1460 errcode_t ext2fs_compare_generic_bmap(errcode_t neq,
1461 ext2fs_generic_bitmap bm1,
1462 ext2fs_generic_bitmap bm2);
1463 errcode_t ext2fs_get_generic_bmap_range(ext2fs_generic_bitmap bmap,
1464 __u64 start, unsigned int num,
1466 errcode_t ext2fs_set_generic_bmap_range(ext2fs_generic_bitmap bmap,
1467 __u64 start, unsigned int num,
1469 errcode_t ext2fs_convert_subcluster_bitmap(ext2_filsys fs,
1470 ext2fs_block_bitmap *bitmap);
1471 errcode_t ext2fs_count_used_clusters(ext2_filsys fs, blk64_t start,
1472 blk64_t end, blk64_t *out);
1474 /* get_num_dirs.c */
1475 extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs);
1478 extern errcode_t ext2fs_get_device_size(const char *file, int blocksize,
1480 extern errcode_t ext2fs_get_device_size2(const char *file, int blocksize,
1481 blk64_t *retblocks);
1484 extern int ext2fs_get_dio_alignment(int fd);
1485 errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize);
1486 errcode_t ext2fs_get_device_phys_sectsize(const char *file, int *sectsize);
1489 errcode_t ext2fs_iblk_add_blocks(ext2_filsys fs, struct ext2_inode *inode,
1490 blk64_t num_blocks);
1491 errcode_t ext2fs_iblk_sub_blocks(ext2_filsys fs, struct ext2_inode *inode,
1492 blk64_t num_blocks);
1493 errcode_t ext2fs_iblk_set(ext2_filsys fs, struct ext2_inode *inode, blk64_t b);
1496 extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags);
1497 extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags);
1498 extern errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd, int flags);
1499 extern errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd, int flags);
1500 extern errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags);
1501 extern errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags);
1504 errcode_t ext2fs_read_ind_block(ext2_filsys fs, blk_t blk, void *buf);
1505 errcode_t ext2fs_write_ind_block(ext2_filsys fs, blk_t blk, void *buf);
1508 extern errcode_t ext2fs_initialize(const char *name, int flags,
1509 struct ext2_super_block *param,
1510 io_manager manager, ext2_filsys *ret_fs);
1511 extern errcode_t ext2fs_calculate_summary_stats(ext2_filsys fs, int super_only);
1514 extern void ext2fs_free_icount(ext2_icount_t icount);
1515 extern errcode_t ext2fs_create_icount_tdb(ext2_filsys fs, char *tdb_dir,
1516 int flags, ext2_icount_t *ret);
1517 extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags,
1519 ext2_icount_t hint, ext2_icount_t *ret);
1520 extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags,
1522 ext2_icount_t *ret);
1523 extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ext2_ino_t ino,
1525 extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ext2_ino_t ino,
1527 extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ext2_ino_t ino,
1529 extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ext2_ino_t ino,
1531 extern errcode_t ext2fs_icount_merge(ext2_icount_t src, ext2_icount_t dest);
1532 extern ext2_ino_t ext2fs_get_icount_size(ext2_icount_t icount);
1533 errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *);
1537 extern errcode_t ext2fs_get_memalign(unsigned long size,
1538 unsigned long align, void *ptr);
1541 extern errcode_t ext2fs_inline_data_init(ext2_filsys fs, ext2_ino_t ino);
1542 extern errcode_t ext2fs_inline_data_size(ext2_filsys fs, ext2_ino_t ino,
1544 extern errcode_t ext2fs_inline_data_get(ext2_filsys fs, ext2_ino_t ino,
1545 struct ext2_inode *inode,
1546 void *buf, size_t *size);
1547 extern errcode_t ext2fs_inline_data_set(ext2_filsys fs, ext2_ino_t ino,
1548 struct ext2_inode *inode,
1549 void *buf, size_t size);
1552 extern errcode_t ext2fs_create_inode_cache(ext2_filsys fs,
1553 unsigned int cache_size);
1554 extern void ext2fs_free_inode_cache(struct ext2_inode_cache *icache);
1555 extern errcode_t ext2fs_flush_icache(ext2_filsys fs);
1556 extern errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan,
1558 struct ext2_inode *inode,
1560 #define EXT2_INODE_SCAN_DEFAULT_BUFFER_BLOCKS 8
1561 extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks,
1562 ext2_inode_scan *ret_scan);
1563 extern void ext2fs_close_inode_scan(ext2_inode_scan scan);
1564 extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino,
1565 struct ext2_inode *inode);
1566 extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan,
1568 extern void ext2fs_set_inode_callback
1569 (ext2_inode_scan scan,
1570 errcode_t (*done_group)(ext2_filsys fs,
1571 ext2_inode_scan scan,
1574 void *done_group_data);
1575 extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags,
1577 extern errcode_t ext2fs_read_inode_full(ext2_filsys fs, ext2_ino_t ino,
1578 struct ext2_inode * inode,
1580 extern errcode_t ext2fs_read_inode(ext2_filsys fs, ext2_ino_t ino,
1581 struct ext2_inode * inode);
1582 extern errcode_t ext2fs_read_inode2(ext2_filsys fs, ext2_ino_t ino,
1583 struct ext2_inode * inode,
1584 int bufsize, int flags);
1585 extern errcode_t ext2fs_write_inode_full(ext2_filsys fs, ext2_ino_t ino,
1586 struct ext2_inode * inode,
1588 extern errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino,
1589 struct ext2_inode * inode);
1590 extern errcode_t ext2fs_write_inode2(ext2_filsys fs, ext2_ino_t ino,
1591 struct ext2_inode * inode,
1592 int bufsize, int flags);
1593 extern errcode_t ext2fs_write_new_inode(ext2_filsys fs, ext2_ino_t ino,
1594 struct ext2_inode * inode);
1595 extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks);
1596 extern errcode_t ext2fs_check_directory(ext2_filsys fs, ext2_ino_t ino);
1599 extern io_manager inode_io_manager;
1600 extern errcode_t ext2fs_inode_io_intern(ext2_filsys fs, ext2_ino_t ino,
1602 extern errcode_t ext2fs_inode_io_intern2(ext2_filsys fs, ext2_ino_t ino,
1603 struct ext2_inode *inode,
1607 extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags);
1608 extern errcode_t ext2fs_check_mount_point(const char *device, int *mount_flags,
1609 char *mtpt, int mtlen);
1613 * NOTE: This function removes from an inode the blocks "start", "end", and
1614 * every block in between.
1616 extern errcode_t ext2fs_punch(ext2_filsys fs, ext2_ino_t ino,
1617 struct ext2_inode *inode,
1618 char *block_buf, blk64_t start,
1622 extern errcode_t ext2fs_lookup(ext2_filsys fs, ext2_ino_t dir, const char *name,
1623 int namelen, char *buf, ext2_ino_t *inode);
1624 extern errcode_t ext2fs_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
1625 const char *name, ext2_ino_t *inode);
1626 errcode_t ext2fs_namei_follow(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
1627 const char *name, ext2_ino_t *inode);
1628 extern errcode_t ext2fs_follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
1629 ext2_ino_t inode, ext2_ino_t *res_inode);
1632 int ext2fs_native_flag(void);
1635 extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino,
1636 ext2_ino_t parent_ino, char **block);
1637 extern errcode_t ext2fs_new_dir_inline_data(ext2_filsys fs, ext2_ino_t dir_ino,
1638 ext2_ino_t parent_ino, __u32 *iblock);
1641 extern const struct ext2fs_nls_table *ext2fs_load_nls_table(int encoding);
1642 extern int ext2fs_check_encoded_name(const struct ext2fs_nls_table *table,
1643 char *s, size_t len, char **pos);
1644 extern int ext2fs_casefold_cmp(const struct ext2fs_nls_table *table,
1645 const unsigned char *str1, size_t len1,
1646 const unsigned char *str2, size_t len2);
1649 extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum,
1653 struct ext2fs_journal_params {
1654 blk_t num_journal_blocks;
1655 blk_t num_fc_blocks;
1657 extern errcode_t ext2fs_get_journal_params(
1658 struct ext2fs_journal_params *params, ext2_filsys fs);
1659 extern errcode_t ext2fs_zero_blocks(ext2_filsys fs, blk_t blk, int num,
1660 blk_t *ret_blk, int *ret_count);
1661 extern errcode_t ext2fs_zero_blocks2(ext2_filsys fs, blk64_t blk, int num,
1662 blk64_t *ret_blk, int *ret_count);
1663 extern errcode_t ext2fs_create_journal_superblock(ext2_filsys fs,
1664 __u32 num_blocks, int flags,
1666 extern errcode_t ext2fs_create_journal_superblock2(ext2_filsys fs,
1667 struct ext2fs_journal_params *params,
1668 int flags, char **ret_jsb);
1669 extern errcode_t ext2fs_add_journal_device(ext2_filsys fs,
1670 ext2_filsys journal_dev);
1671 extern errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t num_blocks,
1673 extern errcode_t ext2fs_add_journal_inode2(ext2_filsys fs, blk_t num_blocks,
1674 blk64_t goal, int flags);
1675 extern errcode_t ext2fs_add_journal_inode3(ext2_filsys fs,
1676 struct ext2fs_journal_params *params,
1677 blk64_t goal, int flags);
1678 extern int ext2fs_default_journal_size(__u64 num_blocks);
1679 extern int ext2fs_journal_sb_start(int blocksize);
1682 extern errcode_t ext2fs_open(const char *name, int flags, int superblock,
1683 unsigned int block_size, io_manager manager,
1684 ext2_filsys *ret_fs);
1685 extern errcode_t ext2fs_open2(const char *name, const char *io_options,
1686 int flags, int superblock,
1687 unsigned int block_size, io_manager manager,
1688 ext2_filsys *ret_fs);
1689 errcode_t ext2fs_open_channel(ext2_filsys fs, const char *io_options,
1690 io_manager manager, int flags,
1693 * The dgrp_t argument to these two functions is not actually a group number
1694 * but a block number offset within a group table! Convert with the formula
1695 * (group_number / groups_per_block).
1697 extern blk64_t ext2fs_descriptor_block_loc2(ext2_filsys fs,
1698 blk64_t group_block, dgrp_t i);
1699 extern blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block,
1701 errcode_t ext2fs_get_data_io(ext2_filsys fs, io_channel *old_io);
1702 errcode_t ext2fs_set_data_io(ext2_filsys fs, io_channel new_io);
1703 errcode_t ext2fs_rewrite_to_io(ext2_filsys fs, io_channel new_io);
1705 /* get_pathname.c */
1706 extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino,
1710 #define EXT2FS_UNLINK_FORCE 0x1 /* Forcefully unlink even if
1711 * the inode number doesn't
1714 errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name,
1715 ext2_ino_t ino, int flags);
1716 errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir, const char *name,
1717 ext2_ino_t ino, int flags);
1720 errcode_t ext2fs_symlink(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t ino,
1721 const char *name, const char *target);
1722 int ext2fs_is_fast_symlink(struct ext2_inode *inode);
1725 errcode_t ext2fs_mmp_read(ext2_filsys fs, blk64_t mmp_blk, void *buf);
1726 errcode_t ext2fs_mmp_write(ext2_filsys fs, blk64_t mmp_blk, void *buf);
1727 errcode_t ext2fs_mmp_clear(ext2_filsys fs);
1728 errcode_t ext2fs_mmp_init(ext2_filsys fs);
1729 errcode_t ext2fs_mmp_start(ext2_filsys fs);
1730 errcode_t ext2fs_mmp_update(ext2_filsys fs);
1731 errcode_t ext2fs_mmp_update2(ext2_filsys fs, int immediately);
1732 errcode_t ext2fs_mmp_stop(ext2_filsys fs);
1733 unsigned ext2fs_mmp_new_seq(void);
1736 extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs,
1737 ext2_badblocks_list *bb_list);
1739 /* read_bb_file.c */
1740 extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f,
1741 ext2_badblocks_list *bb_list,
1743 void (*invalid)(ext2_filsys fs,
1747 extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f,
1748 ext2_badblocks_list *bb_list,
1749 void (*invalid)(ext2_filsys fs,
1753 extern errcode_t ext2fs_create_resize_inode(ext2_filsys fs);
1756 extern errcode_t ext2fs_rw_bitmaps(ext2_filsys fs, int flags, int num_threads);
1757 extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs);
1758 extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs);
1759 extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs);
1760 extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs);
1761 extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs);
1762 extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs);
1765 #define EXT2FS_SHA256_LENGTH 32
1767 extern void ext2fs_sha256(const unsigned char *in, unsigned long in_size,
1768 unsigned char out[EXT2FS_SHA256_LENGTH]);
1772 #define EXT2FS_SHA512_LENGTH 64
1773 extern void ext2fs_sha512(const unsigned char *in, unsigned long in_size,
1774 unsigned char out[EXT2FS_SHA512_LENGTH]);
1777 extern errcode_t ext2fs_dirent_swab_in2(ext2_filsys fs, char *buf, size_t size,
1779 extern errcode_t ext2fs_dirent_swab_in(ext2_filsys fs, char *buf, int flags);
1780 extern errcode_t ext2fs_dirent_swab_out2(ext2_filsys fs, char *buf, size_t size,
1782 extern errcode_t ext2fs_dirent_swab_out(ext2_filsys fs, char *buf, int flags);
1783 extern void ext2fs_swap_ext_attr(char *to, char *from, int bufsize,
1785 extern void ext2fs_swap_ext_attr_header(struct ext2_ext_attr_header *to_header,
1786 struct ext2_ext_attr_header *from_hdr);
1787 extern void ext2fs_swap_ext_attr_entry(struct ext2_ext_attr_entry *to_entry,
1788 struct ext2_ext_attr_entry *from_entry);
1789 extern void ext2fs_swap_super(struct ext2_super_block * super);
1790 extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp);
1791 extern void ext2fs_swap_group_desc2(ext2_filsys, struct ext2_group_desc *gdp);
1792 extern void ext2fs_swap_inode_full(ext2_filsys fs, struct ext2_inode_large *t,
1793 struct ext2_inode_large *f, int hostorder,
1795 extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t,
1796 struct ext2_inode *f, int hostorder);
1797 extern void ext2fs_swap_mmp(struct mmp_struct *mmp);
1800 extern int ext2fs_open_file(const char *pathname, int flags, mode_t mode);
1801 extern int ext2fs_stat(const char *path, ext2fs_struct_stat *buf);
1802 extern int ext2fs_fstat(int fd, ext2fs_struct_stat *buf);
1805 extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode);
1806 extern int ext2fs_inode_has_valid_blocks2(ext2_filsys fs,
1807 struct ext2_inode *inode);
1810 extern int ext2fs_parse_version_string(const char *ver_string);
1811 extern int ext2fs_get_library_version(const char **ver_string,
1812 const char **date_string);
1814 /* write_bb_file.c */
1815 extern errcode_t ext2fs_write_bb_FILE(ext2_badblocks_list bb_list,
1820 /* inline functions */
1821 #ifdef NO_INLINE_FUNCS
1822 extern errcode_t ext2fs_get_mem(unsigned long size, void *ptr);
1823 extern errcode_t ext2fs_get_memzero(unsigned long size, void *ptr);
1824 extern errcode_t ext2fs_get_array(unsigned long count,
1825 unsigned long size, void *ptr);
1826 extern errcode_t ext2fs_get_arrayzero(unsigned long count,
1827 unsigned long size, void *ptr);
1828 extern errcode_t ext2fs_free_mem(void *ptr);
1829 extern errcode_t ext2fs_resize_mem(unsigned long old_size,
1830 unsigned long size, void *ptr);
1831 extern errcode_t ext2fs_resize_array(unsigned long old_count, unsigned long count,
1832 unsigned long size, void *ptr);
1833 extern void ext2fs_mark_super_dirty(ext2_filsys fs);
1834 extern void ext2fs_mark_changed(ext2_filsys fs);
1835 extern int ext2fs_test_changed(ext2_filsys fs);
1836 extern void ext2fs_mark_valid(ext2_filsys fs);
1837 extern void ext2fs_unmark_valid(ext2_filsys fs);
1838 extern int ext2fs_test_valid(ext2_filsys fs);
1839 extern void ext2fs_mark_ib_dirty(ext2_filsys fs);
1840 extern void ext2fs_mark_bb_dirty(ext2_filsys fs);
1841 extern int ext2fs_test_ib_dirty(ext2_filsys fs);
1842 extern int ext2fs_test_bb_dirty(ext2_filsys fs);
1843 extern dgrp_t ext2fs_group_of_blk(ext2_filsys fs, blk_t blk);
1844 extern dgrp_t ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino);
1845 extern blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group);
1846 extern blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group);
1847 extern blk_t ext2fs_inode_data_blocks(ext2_filsys fs,
1848 struct ext2_inode *inode);
1849 extern int ext2fs_htree_intnode_maxrecs(ext2_filsys fs, int blocks);
1850 extern unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b);
1851 extern __u64 ext2fs_div64_ceil(__u64 a, __u64 b);
1852 extern int ext2fs_dirent_name_len(const struct ext2_dir_entry *entry);
1853 extern void ext2fs_dirent_set_name_len(struct ext2_dir_entry *entry, int len);
1854 extern int ext2fs_dirent_file_type(const struct ext2_dir_entry *entry);
1855 extern void ext2fs_dirent_set_file_type(struct ext2_dir_entry *entry, int type);
1856 extern struct ext2_inode *ext2fs_inode(struct ext2_inode_large * large_inode);
1857 extern const struct ext2_inode *ext2fs_const_inode(const struct ext2_inode_large * large_inode);
1862 * The actual inlined functions definitions themselves...
1864 * If NO_INLINE_FUNCS is defined, then we won't try to do inline
1867 #if (defined(INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS))
1868 #ifdef INCLUDE_INLINE_FUNCS
1869 #define _INLINE_ extern
1871 #if (__STDC_VERSION__ >= 199901L)
1872 #define _INLINE_ inline
1875 #define _INLINE_ extern __inline__
1876 #else /* For Watcom C */
1877 #define _INLINE_ extern inline
1878 #endif /* __GNUC__ */
1879 #endif /* __STDC_VERSION__ >= 199901L */
1882 #ifndef EXT2_CUSTOM_MEMORY_ROUTINES
1885 * Allocate memory. The 'ptr' arg must point to a pointer.
1887 _INLINE_ errcode_t ext2fs_get_mem(unsigned long size, void *ptr)
1893 return EXT2_ET_NO_MEMORY;
1894 memcpy(ptr, &pp, sizeof (pp));
1898 _INLINE_ errcode_t ext2fs_get_memzero(unsigned long size, void *ptr)
1904 return EXT2_ET_NO_MEMORY;
1905 memset(pp, 0, size);
1906 memcpy(ptr, &pp, sizeof(pp));
1910 _INLINE_ errcode_t ext2fs_get_array(unsigned long count, unsigned long size,
1913 if (count && (~0UL)/count < size)
1914 return EXT2_ET_NO_MEMORY;
1915 return ext2fs_get_mem(count*size, ptr);
1918 _INLINE_ errcode_t ext2fs_get_arrayzero(unsigned long count,
1919 unsigned long size, void *ptr)
1921 if (count && (~0UL)/count < size)
1922 return EXT2_ET_NO_MEMORY;
1924 return ext2fs_get_memzero((size_t)count * size, ptr);
1928 * Free memory. The 'ptr' arg must point to a pointer.
1930 _INLINE_ errcode_t ext2fs_free_mem(void *ptr)
1934 memcpy(&p, ptr, sizeof(p));
1937 memcpy(ptr, &p, sizeof(p));
1942 * Resize memory. The 'ptr' arg must point to a pointer.
1944 _INLINE_ errcode_t ext2fs_resize_mem(unsigned long EXT2FS_ATTR((unused)) old_size,
1945 unsigned long size, void *ptr)
1949 /* Use "memcpy" for pointer assignments here to avoid problems
1950 * with C99 strict type aliasing rules. */
1951 memcpy(&p, ptr, sizeof(p));
1952 p = realloc(p, size);
1954 return EXT2_ET_NO_MEMORY;
1955 memcpy(ptr, &p, sizeof(p));
1960 * Resize array. The 'ptr' arg must point to a pointer.
1962 _INLINE_ errcode_t ext2fs_resize_array(unsigned long size,
1963 unsigned long old_count,
1964 unsigned long count, void *ptr)
1966 unsigned long old_size;
1969 if (count && (~0UL)/count < size)
1970 return EXT2_ET_NO_MEMORY;
1973 old_size = size * old_count;
1974 retval = ext2fs_resize_mem(old_size, size, ptr);
1978 if (size > old_size) {
1981 memcpy(&p, ptr, sizeof(p));
1982 memset((char *)p + old_size, 0, size - old_size);
1983 memcpy(ptr, &p, sizeof(p));
1988 #endif /* Custom memory routines */
1991 * Mark a filesystem superblock as dirty
1993 _INLINE_ void ext2fs_mark_super_dirty(ext2_filsys fs)
1995 fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_CHANGED;
1999 * Mark a filesystem as changed
2001 _INLINE_ void ext2fs_mark_changed(ext2_filsys fs)
2003 fs->flags |= EXT2_FLAG_CHANGED;
2007 * Check to see if a filesystem has changed
2009 _INLINE_ int ext2fs_test_changed(ext2_filsys fs)
2011 return (fs->flags & EXT2_FLAG_CHANGED);
2015 * Mark a filesystem as valid
2017 _INLINE_ void ext2fs_mark_valid(ext2_filsys fs)
2019 fs->flags |= EXT2_FLAG_VALID;
2023 * Mark a filesystem as NOT valid
2025 _INLINE_ void ext2fs_unmark_valid(ext2_filsys fs)
2027 fs->flags &= ~EXT2_FLAG_VALID;
2031 * Check to see if a filesystem is valid
2033 _INLINE_ int ext2fs_test_valid(ext2_filsys fs)
2035 return (fs->flags & EXT2_FLAG_VALID);
2039 * Mark the inode bitmap as dirty
2041 _INLINE_ void ext2fs_mark_ib_dirty(ext2_filsys fs)
2043 fs->flags |= EXT2_FLAG_IB_DIRTY | EXT2_FLAG_CHANGED;
2047 * Mark the block bitmap as dirty
2049 _INLINE_ void ext2fs_mark_bb_dirty(ext2_filsys fs)
2051 fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_CHANGED;
2055 * Check to see if a filesystem's inode bitmap is dirty
2057 _INLINE_ int ext2fs_test_ib_dirty(ext2_filsys fs)
2059 return (fs->flags & EXT2_FLAG_IB_DIRTY);
2063 * Check to see if a filesystem's block bitmap is dirty
2065 _INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs)
2067 return (fs->flags & EXT2_FLAG_BB_DIRTY);
2071 * Return the group # of a block
2073 _INLINE_ dgrp_t ext2fs_group_of_blk(ext2_filsys fs, blk_t blk)
2075 return ext2fs_group_of_blk2(fs, blk);
2078 * Return the group # of an inode number
2080 _INLINE_ dgrp_t ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino)
2082 return (ino - 1) / fs->super->s_inodes_per_group;
2086 * Return the first block (inclusive) in a group
2088 _INLINE_ blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group)
2090 return (blk_t) ext2fs_group_first_block2(fs, group);
2094 * Return the last block (inclusive) in a group
2096 _INLINE_ blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group)
2098 return (blk_t) ext2fs_group_last_block2(fs, group);
2101 _INLINE_ blk_t ext2fs_inode_data_blocks(ext2_filsys fs,
2102 struct ext2_inode *inode)
2104 return (blk_t) ext2fs_inode_data_blocks2(fs, inode);
2107 _INLINE_ int ext2fs_htree_intnode_maxrecs(ext2_filsys fs, int blocks)
2111 if ((EXT2_SB(fs->super)->s_feature_ro_compat &
2112 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM) != 0)
2113 csum_size = sizeof(struct ext2_dx_tail);
2114 return blocks * ((fs->blocksize - (8 + csum_size)) /
2115 sizeof(struct ext2_dx_entry));
2119 * This is an efficient, overflow safe way of calculating ceil((1.0 * a) / b)
2121 _INLINE_ unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b)
2125 return ((a - 1) / b) + 1;
2128 _INLINE_ __u64 ext2fs_div64_ceil(__u64 a, __u64 b)
2132 return ((a - 1) / b) + 1;
2135 _INLINE_ int ext2fs_dirent_name_len(const struct ext2_dir_entry *entry)
2137 return entry->name_len & 0xff;
2140 _INLINE_ void ext2fs_dirent_set_name_len(struct ext2_dir_entry *entry, int len)
2142 entry->name_len = (entry->name_len & 0xff00) | (len & 0xff);
2145 _INLINE_ int ext2fs_dirent_file_type(const struct ext2_dir_entry *entry)
2147 return entry->name_len >> 8;
2150 _INLINE_ void ext2fs_dirent_set_file_type(struct ext2_dir_entry *entry, int type)
2152 entry->name_len = (entry->name_len & 0xff) | (type << 8);
2155 _INLINE_ struct ext2_inode *ext2fs_inode(struct ext2_inode_large * large_inode)
2157 /* It is always safe to convert large inode to a small inode */
2158 return (struct ext2_inode *) large_inode;
2161 _INLINE_ const struct ext2_inode *
2162 ext2fs_const_inode(const struct ext2_inode_large * large_inode)
2164 /* It is always safe to convert large inode to a small inode */
2165 return (const struct ext2_inode *) large_inode;
2168 static dgrp_t ext2fs_get_avg_group(ext2_filsys fs)
2171 dgrp_t average_group;
2172 unsigned flexbg_size;
2174 if (fs->fs_num_threads <= 1)
2175 return fs->group_desc_count;
2177 average_group = fs->group_desc_count / fs->fs_num_threads;
2178 if (average_group <= 1)
2181 if (ext2fs_has_feature_flex_bg(fs->super)) {
2184 flexbg_size = 1 << fs->super->s_log_groups_per_flex;
2185 if (average_group % flexbg_size) {
2186 times = average_group / flexbg_size;
2187 average_group = times * flexbg_size;
2191 return average_group;
2193 return fs->group_desc_count;
2200 /* htree levels for ext4 */
2201 #define EXT4_HTREE_LEVEL_COMPAT 2
2202 #define EXT4_HTREE_LEVEL 3
2204 static inline unsigned int ext2_dir_htree_level(ext2_filsys fs)
2206 if (ext2fs_has_feature_largedir(fs->super))
2207 return EXT4_HTREE_LEVEL;
2209 return EXT4_HTREE_LEVEL_COMPAT;
2216 #endif /* _EXT2FS_EXT2FS_H */