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 __u32 __bitwise ext2_off_t;
81 typedef __u64 __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 typedef struct ext2fs_struct_generic_bitmap *ext2fs_generic_bitmap;
115 typedef struct ext2fs_struct_generic_bitmap *ext2fs_inode_bitmap;
116 typedef struct ext2fs_struct_generic_bitmap *ext2fs_block_bitmap;
118 #define EXT2_FIRST_INODE(s) EXT2_FIRST_INO(s)
122 * Badblocks list definitions
125 typedef struct ext2_struct_u32_list *ext2_badblocks_list;
126 typedef struct ext2_struct_u32_iterate *ext2_badblocks_iterate;
128 typedef struct ext2_struct_u32_list *ext2_u32_list;
129 typedef struct ext2_struct_u32_iterate *ext2_u32_iterate;
132 typedef struct ext2_struct_u32_list *badblocks_list;
133 typedef struct ext2_struct_u32_iterate *badblocks_iterate;
135 #define BADBLOCKS_FLAG_DIRTY 1
138 * ext2_dblist structure and abstractions (see dblist.c)
140 struct ext2_db_entry2 {
143 e2_blkcnt_t blockcnt;
146 /* Ye Olde 32-bit version */
147 struct ext2_db_entry {
153 typedef struct ext2_struct_dblist *ext2_dblist;
155 #define DBLIST_ABORT 1
158 * ext2_fileio definitions
161 #define EXT2_FILE_WRITE 0x0001
162 #define EXT2_FILE_CREATE 0x0002
164 #define EXT2_FILE_MASK 0x00FF
166 #define EXT2_FILE_BUF_DIRTY 0x4000
167 #define EXT2_FILE_BUF_VALID 0x2000
169 typedef struct ext2_file *ext2_file_t;
171 #define EXT2_SEEK_SET 0
172 #define EXT2_SEEK_CUR 1
173 #define EXT2_SEEK_END 2
176 * Flags for the ext2_filsys structure and for ext2fs_open()
178 #define EXT2_FLAG_RW 0x01
179 #define EXT2_FLAG_CHANGED 0x02
180 #define EXT2_FLAG_DIRTY 0x04
181 #define EXT2_FLAG_VALID 0x08
182 #define EXT2_FLAG_IB_DIRTY 0x10
183 #define EXT2_FLAG_BB_DIRTY 0x20
184 #define EXT2_FLAG_SWAP_BYTES 0x40
185 #define EXT2_FLAG_SWAP_BYTES_READ 0x80
186 #define EXT2_FLAG_SWAP_BYTES_WRITE 0x100
187 #define EXT2_FLAG_MASTER_SB_ONLY 0x200
188 #define EXT2_FLAG_FORCE 0x400
189 #define EXT2_FLAG_SUPER_ONLY 0x800
190 #define EXT2_FLAG_JOURNAL_DEV_OK 0x1000
191 #define EXT2_FLAG_IMAGE_FILE 0x2000
192 #define EXT2_FLAG_EXCLUSIVE 0x4000
193 #define EXT2_FLAG_SOFTSUPP_FEATURES 0x8000
194 #define EXT2_FLAG_NOFREE_ON_ERROR 0x10000
195 #define EXT2_FLAG_64BITS 0x20000
196 #define EXT2_FLAG_PRINT_PROGRESS 0x40000
197 #define EXT2_FLAG_DIRECT_IO 0x80000
198 #define EXT2_FLAG_SKIP_MMP 0x100000
199 #define EXT2_FLAG_IGNORE_CSUM_ERRORS 0x200000
200 #define EXT2_FLAG_SHARE_DUP 0x400000
201 #define EXT2_FLAG_IGNORE_SB_ERRORS 0x800000
204 * Special flag in the ext2 inode i_flag field that means that this is
205 * a new inode. (So that ext2_write_inode() can clear extra fields.)
207 #define EXT2_NEW_INODE_FL 0x80000000
210 * Flags for mkjournal
212 #define EXT2_MKJOURNAL_V1_SUPER 0x0000001 /* create V1 superblock (deprecated) */
213 #define EXT2_MKJOURNAL_LAZYINIT 0x0000002 /* don't zero journal inode before use*/
214 #define EXT2_MKJOURNAL_NO_MNT_CHECK 0x0000004 /* don't check mount status */
216 struct blk_alloc_ctx;
217 struct opaque_ext2_group_desc;
219 struct struct_ext2_filsys {
224 struct ext2_super_block * super;
225 unsigned int blocksize;
227 dgrp_t group_desc_count;
228 unsigned long desc_blocks;
229 struct opaque_ext2_group_desc * group_desc;
230 unsigned int inode_blocks_per_group;
231 ext2fs_inode_bitmap inode_map;
232 ext2fs_block_bitmap block_map;
233 /* XXX FIXME-64: not 64-bit safe, but not used? */
234 errcode_t (*get_blocks)(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks);
235 errcode_t (*check_directory)(ext2_filsys fs, ext2_ino_t ino);
236 errcode_t (*write_bitmaps)(ext2_filsys fs);
237 errcode_t (*read_inode)(ext2_filsys fs, ext2_ino_t ino,
238 struct ext2_inode *inode);
239 errcode_t (*write_inode)(ext2_filsys fs, ext2_ino_t ino,
240 struct ext2_inode *inode);
241 ext2_badblocks_list badblocks;
243 __u32 stride; /* for mke2fs */
244 struct ext2_super_block * orig_super;
245 struct ext2_image_hdr * image_header;
248 int cluster_ratio_bits;
249 __u16 default_bitmap_type;
252 * Reserved for future expansion
257 * Reserved for the use of the calling application.
264 struct ext2_inode_cache *icache;
268 * More callback functions
270 errcode_t (*get_alloc_block)(ext2_filsys fs, blk64_t goal,
272 errcode_t (*get_alloc_block2)(ext2_filsys fs, blk64_t goal,
273 blk64_t *ret, struct blk_alloc_ctx *ctx);
274 void (*block_alloc_stats)(ext2_filsys fs, blk64_t blk, int inuse);
277 * Buffers for Multiple mount protection(MMP) block.
284 * Time at which e2fsck last updated the MMP block.
286 long mmp_last_written;
288 /* progress operation functions */
289 struct ext2fs_progress_ops *progress_ops;
291 /* Precomputed FS UUID checksum for seeding other checksums */
294 io_channel journal_io;
297 /* New block range allocation hooks */
298 errcode_t (*new_range)(ext2_filsys fs, int flags, blk64_t goal,
299 blk64_t len, blk64_t *pblk, blk64_t *plen);
300 void (*block_alloc_stats_range)(ext2_filsys fs, blk64_t blk, blk_t num,
303 /* hashmap for SHA of data blocks */
304 struct ext2fs_hashmap* block_sha_map;
307 #if EXT2_FLAT_INCLUDES
308 #include "e2_bitops.h"
310 #include <ext2fs/bitops.h>
314 * 64-bit bitmap backend types
316 #define EXT2FS_BMAP64_BITARRAY 1
317 #define EXT2FS_BMAP64_RBTREE 2
318 #define EXT2FS_BMAP64_AUTODIR 3
321 * Return flags for the block iterator functions
323 #define BLOCK_CHANGED 1
324 #define BLOCK_ABORT 2
325 #define BLOCK_ERROR 4
326 #define BLOCK_INLINE_DATA_CHANGED 8
329 * Block interate flags
331 * BLOCK_FLAG_APPEND, or BLOCK_FLAG_HOLE, indicates that the interator
332 * function should be called on blocks where the block number is zero.
333 * This is used by ext2fs_expand_dir() to be able to add a new block
334 * to an inode. It can also be used for programs that want to be able
335 * to deal with files that contain "holes".
337 * BLOCK_FLAG_DEPTH_TRAVERSE indicates that the iterator function for
338 * the indirect, doubly indirect, etc. blocks should be called after
339 * all of the blocks contained in the indirect blocks are processed.
340 * This is useful if you are going to be deallocating blocks from an
343 * BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be
344 * called for data blocks only.
346 * BLOCK_FLAG_READ_ONLY is a promise by the caller that it will not
347 * modify returned block number.
349 * BLOCK_FLAG_NO_LARGE is for internal use only. It informs
350 * ext2fs_block_iterate2 that large files won't be accepted.
352 #define BLOCK_FLAG_APPEND 1
353 #define BLOCK_FLAG_HOLE 1
354 #define BLOCK_FLAG_DEPTH_TRAVERSE 2
355 #define BLOCK_FLAG_DATA_ONLY 4
356 #define BLOCK_FLAG_READ_ONLY 8
358 #define BLOCK_FLAG_NO_LARGE 0x1000
361 * Magic "block count" return values for the block iterator function.
363 #define BLOCK_COUNT_IND (-1)
364 #define BLOCK_COUNT_DIND (-2)
365 #define BLOCK_COUNT_TIND (-3)
366 #define BLOCK_COUNT_TRANSLATOR (-4)
368 #define BLOCK_ALLOC_UNKNOWN 0
369 #define BLOCK_ALLOC_DATA 1
370 #define BLOCK_ALLOC_METADATA 2
372 struct blk_alloc_ctx {
374 struct ext2_inode *inode;
381 * Flags for ext2fs_move_blocks
383 #define EXT2_BMOVE_GET_DBLIST 0x0001
384 #define EXT2_BMOVE_DEBUG 0x0002
388 * Generic (non-filesystem layout specific) extents structure
391 #define EXT2_EXTENT_FLAGS_LEAF 0x0001
392 #define EXT2_EXTENT_FLAGS_UNINIT 0x0002
393 #define EXT2_EXTENT_FLAGS_SECOND_VISIT 0x0004
395 struct ext2fs_extent {
396 blk64_t e_pblk; /* first physical block */
397 blk64_t e_lblk; /* first logical block extent covers */
398 __u32 e_len; /* number of blocks covered by extent */
399 __u32 e_flags; /* extent flags */
402 typedef struct ext2_extent_handle *ext2_extent_handle_t;
403 typedef struct ext2_extent_path *ext2_extent_path_t;
406 * Flags used by ext2fs_extent_get()
408 #define EXT2_EXTENT_CURRENT 0x0000
409 #define EXT2_EXTENT_MOVE_MASK 0x000F
410 #define EXT2_EXTENT_ROOT 0x0001
411 #define EXT2_EXTENT_LAST_LEAF 0x0002
412 #define EXT2_EXTENT_FIRST_SIB 0x0003
413 #define EXT2_EXTENT_LAST_SIB 0x0004
414 #define EXT2_EXTENT_NEXT_SIB 0x0005
415 #define EXT2_EXTENT_PREV_SIB 0x0006
416 #define EXT2_EXTENT_NEXT_LEAF 0x0007
417 #define EXT2_EXTENT_PREV_LEAF 0x0008
418 #define EXT2_EXTENT_NEXT 0x0009
419 #define EXT2_EXTENT_PREV 0x000A
420 #define EXT2_EXTENT_UP 0x000B
421 #define EXT2_EXTENT_DOWN 0x000C
422 #define EXT2_EXTENT_DOWN_AND_LAST 0x000D
425 * Flags used by ext2fs_extent_insert()
427 #define EXT2_EXTENT_INSERT_AFTER 0x0001 /* insert after handle loc'n */
428 #define EXT2_EXTENT_INSERT_NOSPLIT 0x0002 /* insert may not cause split */
431 * Flags used by ext2fs_extent_delete()
433 #define EXT2_EXTENT_DELETE_KEEP_EMPTY 0x001 /* keep node if last extent gone */
436 * Flags used by ext2fs_extent_set_bmap()
438 #define EXT2_EXTENT_SET_BMAP_UNINIT 0x0001
441 * Data structure returned by ext2fs_extent_get_info()
443 struct ext2_extent_info {
453 __u32 max_uninit_len;
457 * Flags for directory block reading and writing functions
459 #define EXT2_DIRBLOCK_V2_STRUCT 0x0001
462 * Return flags for the directory iterator functions
464 #define DIRENT_CHANGED 1
465 #define DIRENT_ABORT 2
466 #define DIRENT_ERROR 3
469 * Directory iterator flags
472 #define DIRENT_FLAG_INCLUDE_EMPTY 1
473 #define DIRENT_FLAG_INCLUDE_REMOVED 2
474 #define DIRENT_FLAG_INCLUDE_CSUM 4
475 #define DIRENT_FLAG_INCLUDE_INLINE_DATA 8
477 #define DIRENT_DOT_FILE 1
478 #define DIRENT_DOT_DOT_FILE 2
479 #define DIRENT_OTHER_FILE 3
480 #define DIRENT_DELETED_FILE 4
481 #define DIRENT_CHECKSUM 5
484 * Inode scan definitions
486 typedef struct ext2_struct_inode_scan *ext2_inode_scan;
491 #define EXT2_SF_CHK_BADBLOCKS 0x0001
492 #define EXT2_SF_BAD_INODE_BLK 0x0002
493 #define EXT2_SF_BAD_EXTRA_BYTES 0x0004
494 #define EXT2_SF_SKIP_MISSING_ITABLE 0x0008
495 #define EXT2_SF_DO_LAZY 0x0010
496 #define EXT2_SF_WARN_GARBAGE_INODES 0x0020
499 * ext2fs_check_if_mounted flags
501 #define EXT2_MF_MOUNTED 1
502 #define EXT2_MF_ISROOT 2
503 #define EXT2_MF_READONLY 4
504 #define EXT2_MF_SWAP 8
505 #define EXT2_MF_BUSY 16
508 * Ext2/linux mode flags. We define them here so that we don't need
509 * to depend on the OS's sys/stat.h, since we may be compiling on a
512 #define LINUX_S_IFMT 00170000
513 #define LINUX_S_IFSOCK 0140000
514 #define LINUX_S_IFLNK 0120000
515 #define LINUX_S_IFREG 0100000
516 #define LINUX_S_IFBLK 0060000
517 #define LINUX_S_IFDIR 0040000
518 #define LINUX_S_IFCHR 0020000
519 #define LINUX_S_IFIFO 0010000
520 #define LINUX_S_ISUID 0004000
521 #define LINUX_S_ISGID 0002000
522 #define LINUX_S_ISVTX 0001000
524 #define LINUX_S_IRWXU 00700
525 #define LINUX_S_IRUSR 00400
526 #define LINUX_S_IWUSR 00200
527 #define LINUX_S_IXUSR 00100
529 #define LINUX_S_IRWXG 00070
530 #define LINUX_S_IRGRP 00040
531 #define LINUX_S_IWGRP 00020
532 #define LINUX_S_IXGRP 00010
534 #define LINUX_S_IRWXO 00007
535 #define LINUX_S_IROTH 00004
536 #define LINUX_S_IWOTH 00002
537 #define LINUX_S_IXOTH 00001
539 #define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK)
540 #define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG)
541 #define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR)
542 #define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR)
543 #define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK)
544 #define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO)
545 #define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK)
548 * ext2 size of an inode
550 #define EXT2_I_SIZE(i) ((i)->i_size | ((__u64) (i)->i_size_high << 32))
553 * ext2_icount_t abstraction
555 #define EXT2_ICOUNT_OPT_INCREMENT 0x01
556 #define EXT2_ICOUNT_OPT_FULLMAP 0x02
558 typedef struct ext2_icount *ext2_icount_t;
561 * Flags for ext2fs_bmap
563 #define BMAP_ALLOC 0x0001
564 #define BMAP_SET 0x0002
565 #define BMAP_UNINIT 0x0004
566 #define BMAP_ZERO 0x0008
569 * Returned flags from ext2fs_bmap
571 #define BMAP_RET_UNINIT 0x0001
574 * Flags for imager.c functions
576 #define IMAGER_FLAG_INODEMAP 1
577 #define IMAGER_FLAG_SPARSEWRITE 2
580 * For checking structure magic numbers...
583 #define EXT2_CHECK_MAGIC(struct, code) \
584 if ((struct)->magic != (code)) return (code)
587 * Flags for returning status of ext2fs_expand_extra_isize()
589 #define EXT2_EXPAND_EISIZE_UNSAFE 0x0001
590 #define EXT2_EXPAND_EISIZE_NEW_BLOCK 0x0002
591 #define EXT2_EXPAND_EISIZE_NOSPC 0x0004
594 * Features supported by this version of the library
596 #define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\
597 EXT2_FEATURE_COMPAT_IMAGIC_INODES|\
598 EXT3_FEATURE_COMPAT_HAS_JOURNAL|\
599 EXT2_FEATURE_COMPAT_RESIZE_INODE|\
600 EXT2_FEATURE_COMPAT_DIR_INDEX|\
601 EXT2_FEATURE_COMPAT_EXT_ATTR|\
602 EXT4_FEATURE_COMPAT_SPARSE_SUPER2)
605 #define EXT4_LIB_INCOMPAT_MMP EXT4_FEATURE_INCOMPAT_MMP
607 #define EXT4_LIB_INCOMPAT_MMP (0)
610 #define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\
611 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\
612 EXT2_FEATURE_INCOMPAT_META_BG|\
613 EXT3_FEATURE_INCOMPAT_RECOVER|\
614 EXT3_FEATURE_INCOMPAT_EXTENTS|\
615 EXT4_FEATURE_INCOMPAT_FLEX_BG|\
616 EXT4_FEATURE_INCOMPAT_EA_INODE|\
617 EXT4_LIB_INCOMPAT_MMP|\
618 EXT4_FEATURE_INCOMPAT_64BIT|\
619 EXT4_FEATURE_INCOMPAT_INLINE_DATA|\
620 EXT4_FEATURE_INCOMPAT_ENCRYPT|\
621 EXT4_FEATURE_INCOMPAT_CSUM_SEED|\
622 EXT4_FEATURE_INCOMPAT_LARGEDIR)
624 #define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\
625 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|\
626 EXT2_FEATURE_RO_COMPAT_LARGE_FILE|\
627 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|\
628 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|\
629 EXT4_FEATURE_RO_COMPAT_GDT_CSUM|\
630 EXT4_FEATURE_RO_COMPAT_BIGALLOC|\
631 EXT4_FEATURE_RO_COMPAT_QUOTA|\
632 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM|\
633 EXT4_FEATURE_RO_COMPAT_READONLY |\
634 EXT4_FEATURE_RO_COMPAT_PROJECT |\
635 EXT4_FEATURE_RO_COMPAT_SHARED_BLOCKS)
638 * These features are only allowed if EXT2_FLAG_SOFTSUPP_FEATURES is passed
641 #define EXT2_LIB_SOFTSUPP_INCOMPAT (0)
642 #define EXT2_LIB_SOFTSUPP_RO_COMPAT (EXT4_FEATURE_RO_COMPAT_REPLICA)
645 /* Translate a block number to a cluster number */
646 #define EXT2FS_CLUSTER_RATIO(fs) (1 << (fs)->cluster_ratio_bits)
647 #define EXT2FS_CLUSTER_MASK(fs) (EXT2FS_CLUSTER_RATIO(fs) - 1)
648 #define EXT2FS_B2C(fs, blk) ((blk) >> (fs)->cluster_ratio_bits)
649 /* Translate a cluster number to a block number */
650 #define EXT2FS_C2B(fs, cluster) ((cluster) << (fs)->cluster_ratio_bits)
651 /* Translate # of blks to # of clusters */
652 #define EXT2FS_NUM_B2C(fs, blks) (((blks) + EXT2FS_CLUSTER_MASK(fs)) >> \
653 (fs)->cluster_ratio_bits)
655 #if defined(HAVE_FSTAT64) && !defined(__OSX_AVAILABLE_BUT_DEPRECATED)
656 typedef struct stat64 ext2fs_struct_stat;
658 typedef struct stat ext2fs_struct_stat;
662 * For ext2fs_close2() and ext2fs_flush2(), this flag allows you to
663 * avoid the fsync call.
665 #define EXT2_FLAG_FLUSH_NO_SYNC 1
668 * Modify and iterate extended attributes
670 struct ext2_xattr_handle;
671 #define XATTR_ABORT 1
672 #define XATTR_CHANGED 2
675 * function prototypes
677 static inline int ext2fs_has_group_desc_csum(ext2_filsys fs)
679 return ext2fs_has_feature_metadata_csum(fs->super) ||
680 ext2fs_has_feature_gdt_csum(fs->super);
683 /* The LARGE_FILE feature should be set if we have stored files 2GB+ in size */
684 static inline int ext2fs_needs_large_file_feature(unsigned long long file_size)
686 return file_size >= 0x80000000ULL;
690 extern void ext2fs_clear_block_uninit(ext2_filsys fs, dgrp_t group);
691 extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode,
692 ext2fs_inode_bitmap map, ext2_ino_t *ret);
693 extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal,
694 ext2fs_block_bitmap map, blk_t *ret);
695 extern errcode_t ext2fs_new_block2(ext2_filsys fs, blk64_t goal,
696 ext2fs_block_bitmap map, blk64_t *ret);
697 extern errcode_t ext2fs_new_block3(ext2_filsys fs, blk64_t goal,
698 ext2fs_block_bitmap map, blk64_t *ret,
699 struct blk_alloc_ctx *ctx);
700 extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start,
701 blk_t finish, int num,
702 ext2fs_block_bitmap map,
704 extern errcode_t ext2fs_get_free_blocks2(ext2_filsys fs, blk64_t start,
705 blk64_t finish, int num,
706 ext2fs_block_bitmap map,
708 extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal,
709 char *block_buf, blk_t *ret);
710 extern errcode_t ext2fs_alloc_block2(ext2_filsys fs, blk64_t goal,
711 char *block_buf, blk64_t *ret);
712 extern errcode_t ext2fs_alloc_block3(ext2_filsys fs, blk64_t goal,
713 char *block_buf, blk64_t *ret,
714 struct blk_alloc_ctx *ctx);
716 extern void ext2fs_set_alloc_block_callback(ext2_filsys fs,
717 errcode_t (*func)(ext2_filsys fs,
720 errcode_t (**old)(ext2_filsys fs,
723 blk64_t ext2fs_find_inode_goal(ext2_filsys fs, ext2_ino_t ino,
724 struct ext2_inode *inode, blk64_t lblk);
725 extern void ext2fs_set_new_range_callback(ext2_filsys fs,
726 errcode_t (*func)(ext2_filsys fs, int flags, blk64_t goal,
727 blk64_t len, blk64_t *pblk, blk64_t *plen),
728 errcode_t (**old)(ext2_filsys fs, int flags, blk64_t goal,
729 blk64_t len, blk64_t *pblk, blk64_t *plen));
730 extern void ext2fs_set_block_alloc_stats_range_callback(ext2_filsys fs,
731 void (*func)(ext2_filsys fs, blk64_t blk,
732 blk_t num, int inuse),
733 void (**old)(ext2_filsys fs, blk64_t blk,
734 blk_t num, int inuse));
735 #define EXT2_NEWRANGE_FIXED_GOAL (0x1)
736 #define EXT2_NEWRANGE_MIN_LENGTH (0x2)
737 #define EXT2_NEWRANGE_ALL_FLAGS (0x3)
738 errcode_t ext2fs_new_range(ext2_filsys fs, int flags, blk64_t goal,
739 blk64_t len, ext2fs_block_bitmap map, blk64_t *pblk,
741 #define EXT2_ALLOCRANGE_FIXED_GOAL (0x1)
742 #define EXT2_ALLOCRANGE_ZERO_BLOCKS (0x2)
743 #define EXT2_ALLOCRANGE_ALL_FLAGS (0x3)
744 errcode_t ext2fs_alloc_range(ext2_filsys fs, int flags, blk64_t goal,
745 blk_t len, blk64_t *ret);
748 extern int ext2fs_reserve_super_and_bgd(ext2_filsys fs,
750 ext2fs_block_bitmap bmap);
751 extern void ext2fs_set_block_alloc_stats_callback(ext2_filsys fs,
752 void (*func)(ext2_filsys fs,
755 void (**old)(ext2_filsys fs,
760 void ext2fs_inode_alloc_stats(ext2_filsys fs, ext2_ino_t ino, int inuse);
761 void ext2fs_inode_alloc_stats2(ext2_filsys fs, ext2_ino_t ino,
762 int inuse, int isdir);
763 void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse);
764 void ext2fs_block_alloc_stats2(ext2_filsys fs, blk64_t blk, int inuse);
765 void ext2fs_block_alloc_stats_range(ext2_filsys fs, blk64_t blk,
766 blk_t num, int inuse);
769 extern errcode_t ext2fs_allocate_tables(ext2_filsys fs);
770 extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group,
771 ext2fs_block_bitmap bmap);
774 extern errcode_t ext2fs_u32_list_create(ext2_u32_list *ret, int size);
775 extern errcode_t ext2fs_u32_list_add(ext2_u32_list bb, __u32 blk);
776 extern int ext2fs_u32_list_find(ext2_u32_list bb, __u32 blk);
777 extern int ext2fs_u32_list_test(ext2_u32_list bb, blk_t blk);
778 extern errcode_t ext2fs_u32_list_iterate_begin(ext2_u32_list bb,
779 ext2_u32_iterate *ret);
780 extern int ext2fs_u32_list_iterate(ext2_u32_iterate iter, blk_t *blk);
781 extern void ext2fs_u32_list_iterate_end(ext2_u32_iterate iter);
782 extern errcode_t ext2fs_u32_copy(ext2_u32_list src, ext2_u32_list *dest);
783 extern int ext2fs_u32_list_equal(ext2_u32_list bb1, ext2_u32_list bb2);
785 extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret,
787 extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb,
789 extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb,
791 extern int ext2fs_u32_list_del(ext2_u32_list bb, __u32 blk);
792 extern void ext2fs_badblocks_list_del(ext2_u32_list bb, __u32 blk);
794 ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb,
795 ext2_badblocks_iterate *ret);
796 extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter,
798 extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter);
799 extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src,
800 ext2_badblocks_list *dest);
801 extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1,
802 ext2_badblocks_list bb2);
803 extern int ext2fs_u32_list_count(ext2_u32_list bb);
806 extern errcode_t badblocks_list_create(badblocks_list *ret, int size);
807 extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk);
808 extern int badblocks_list_test(badblocks_list bb, blk_t blk);
809 extern errcode_t badblocks_list_iterate_begin(badblocks_list bb,
810 badblocks_iterate *ret);
811 extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk);
812 extern void badblocks_list_iterate_end(badblocks_iterate iter);
813 extern void badblocks_list_free(badblocks_list bb);
816 extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs,
817 ext2_badblocks_list bb_list);
820 extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap);
821 extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap);
822 extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src,
823 ext2fs_generic_bitmap *dest);
824 extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs);
825 extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs);
826 extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs);
827 extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs);
828 extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs,
830 ext2fs_block_bitmap *ret);
831 extern errcode_t ext2fs_allocate_subcluster_bitmap(ext2_filsys fs,
833 ext2fs_block_bitmap *ret);
834 extern int ext2fs_get_bitmap_granularity(ext2fs_block_bitmap bitmap);
835 extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs,
837 ext2fs_inode_bitmap *ret);
838 extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap,
839 ext2_ino_t end, ext2_ino_t *oend);
840 extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap,
841 blk_t end, blk_t *oend);
842 extern errcode_t ext2fs_fudge_block_bitmap_end2(ext2fs_block_bitmap bitmap,
843 blk64_t end, blk64_t *oend);
844 extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap);
845 extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap);
846 extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs);
847 extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs);
848 extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end,
849 ext2fs_inode_bitmap bmap);
850 extern errcode_t ext2fs_resize_inode_bitmap2(__u64 new_end,
852 ext2fs_inode_bitmap bmap);
853 extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end,
854 ext2fs_block_bitmap bmap);
855 extern errcode_t ext2fs_resize_block_bitmap2(__u64 new_end,
857 ext2fs_block_bitmap bmap);
858 extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1,
859 ext2fs_block_bitmap bm2);
860 extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1,
861 ext2fs_inode_bitmap bm2);
862 extern errcode_t ext2fs_set_inode_bitmap_range(ext2fs_inode_bitmap bmap,
863 ext2_ino_t start, unsigned int num,
865 extern errcode_t ext2fs_set_inode_bitmap_range2(ext2fs_inode_bitmap bmap,
866 __u64 start, size_t num,
868 extern errcode_t ext2fs_get_inode_bitmap_range(ext2fs_inode_bitmap bmap,
869 ext2_ino_t start, unsigned int num,
871 extern errcode_t ext2fs_get_inode_bitmap_range2(ext2fs_inode_bitmap bmap,
872 __u64 start, size_t num,
874 extern errcode_t ext2fs_set_block_bitmap_range(ext2fs_block_bitmap bmap,
875 blk_t start, unsigned int num,
877 extern errcode_t ext2fs_set_block_bitmap_range2(ext2fs_block_bitmap bmap,
878 blk64_t start, size_t num,
880 extern errcode_t ext2fs_get_block_bitmap_range(ext2fs_block_bitmap bmap,
881 blk_t start, unsigned int num,
883 extern errcode_t ext2fs_get_block_bitmap_range2(ext2fs_block_bitmap bmap,
884 blk64_t start, size_t num,
888 extern __u32 ext2fs_inode_bitmap_checksum(ext2_filsys fs, dgrp_t group);
889 extern __u32 ext2fs_block_bitmap_checksum(ext2_filsys fs, dgrp_t group);
890 extern dgrp_t ext2fs_group_of_blk2(ext2_filsys fs, blk64_t);
891 extern blk64_t ext2fs_group_first_block2(ext2_filsys fs, dgrp_t group);
892 extern blk64_t ext2fs_group_last_block2(ext2_filsys fs, dgrp_t group);
893 extern int ext2fs_group_blocks_count(ext2_filsys fs, dgrp_t group);
894 extern blk64_t ext2fs_inode_data_blocks2(ext2_filsys fs,
895 struct ext2_inode *inode);
896 extern blk64_t ext2fs_inode_i_blocks(ext2_filsys fs,
897 struct ext2_inode *inode);
898 extern blk64_t ext2fs_blocks_count(struct ext2_super_block *super);
899 extern void ext2fs_blocks_count_set(struct ext2_super_block *super,
901 extern void ext2fs_blocks_count_add(struct ext2_super_block *super,
903 extern blk64_t ext2fs_r_blocks_count(struct ext2_super_block *super);
904 extern void ext2fs_r_blocks_count_set(struct ext2_super_block *super,
906 extern void ext2fs_r_blocks_count_add(struct ext2_super_block *super,
908 extern blk64_t ext2fs_free_blocks_count(struct ext2_super_block *super);
909 extern void ext2fs_free_blocks_count_set(struct ext2_super_block *super,
911 extern void ext2fs_free_blocks_count_add(struct ext2_super_block *super,
913 /* Block group descriptor accessor functions */
914 extern struct ext2_group_desc *ext2fs_group_desc(ext2_filsys fs,
915 struct opaque_ext2_group_desc *gdp,
917 extern blk64_t ext2fs_block_bitmap_csum(ext2_filsys fs, dgrp_t group);
918 extern blk64_t ext2fs_block_bitmap_loc(ext2_filsys fs, dgrp_t group);
919 extern void ext2fs_block_bitmap_loc_set(ext2_filsys fs, dgrp_t group,
921 extern __u32 ext2fs_inode_bitmap_csum(ext2_filsys fs, dgrp_t group);
922 extern blk64_t ext2fs_inode_bitmap_loc(ext2_filsys fs, dgrp_t group);
923 extern void ext2fs_inode_bitmap_loc_set(ext2_filsys fs, dgrp_t group,
925 extern blk64_t ext2fs_inode_table_loc(ext2_filsys fs, dgrp_t group);
926 extern void ext2fs_inode_table_loc_set(ext2_filsys fs, dgrp_t group,
928 extern __u32 ext2fs_bg_free_blocks_count(ext2_filsys fs, dgrp_t group);
929 extern void ext2fs_bg_free_blocks_count_set(ext2_filsys fs, dgrp_t group,
931 extern __u32 ext2fs_bg_free_inodes_count(ext2_filsys fs, dgrp_t group);
932 extern void ext2fs_bg_free_inodes_count_set(ext2_filsys fs, dgrp_t group,
934 extern __u32 ext2fs_bg_used_dirs_count(ext2_filsys fs, dgrp_t group);
935 extern void ext2fs_bg_used_dirs_count_set(ext2_filsys fs, dgrp_t group,
937 extern __u32 ext2fs_bg_itable_unused(ext2_filsys fs, dgrp_t group);
938 extern void ext2fs_bg_itable_unused_set(ext2_filsys fs, dgrp_t group,
940 extern __u16 ext2fs_bg_flags(ext2_filsys fs, dgrp_t group);
941 extern void ext2fs_bg_flags_zap(ext2_filsys fs, dgrp_t group);
942 extern int ext2fs_bg_flags_test(ext2_filsys fs, dgrp_t group, __u16 bg_flag);
943 extern void ext2fs_bg_flags_set(ext2_filsys fs, dgrp_t group, __u16 bg_flags);
944 extern void ext2fs_bg_flags_clear(ext2_filsys fs, dgrp_t group, __u16 bg_flags);
945 extern __u16 ext2fs_bg_checksum(ext2_filsys fs, dgrp_t group);
946 extern void ext2fs_bg_checksum_set(ext2_filsys fs, dgrp_t group, __u16 checksum);
947 extern blk64_t ext2fs_file_acl_block(ext2_filsys fs,
948 const struct ext2_inode *inode);
949 extern void ext2fs_file_acl_block_set(ext2_filsys fs,
950 struct ext2_inode *inode, blk64_t blk);
951 extern errcode_t ext2fs_inode_size_set(ext2_filsys fs, struct ext2_inode *inode,
955 extern errcode_t ext2fs_block_iterate(ext2_filsys fs,
959 int (*func)(ext2_filsys fs,
964 errcode_t ext2fs_block_iterate2(ext2_filsys fs,
968 int (*func)(ext2_filsys fs,
970 e2_blkcnt_t blockcnt,
975 errcode_t ext2fs_block_iterate3(ext2_filsys fs,
979 int (*func)(ext2_filsys fs,
981 e2_blkcnt_t blockcnt,
988 extern errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino,
989 struct ext2_inode *inode,
990 char *block_buf, int bmap_flags,
991 blk_t block, blk_t *phys_blk);
992 extern errcode_t ext2fs_bmap2(ext2_filsys fs, ext2_ino_t ino,
993 struct ext2_inode *inode,
994 char *block_buf, int bmap_flags, blk64_t block,
995 int *ret_flags, blk64_t *phys_blk);
996 errcode_t ext2fs_map_cluster_block(ext2_filsys fs, ext2_ino_t ino,
997 struct ext2_inode *inode, blk64_t lblk,
1002 extern errcode_t ext2fs_move_blocks(ext2_filsys fs,
1003 ext2fs_block_bitmap reserve,
1004 ext2fs_block_bitmap alloc_map,
1009 extern errcode_t ext2fs_check_desc(ext2_filsys fs);
1012 extern errcode_t ext2fs_close(ext2_filsys fs);
1013 extern errcode_t ext2fs_close2(ext2_filsys fs, int flags);
1014 extern errcode_t ext2fs_close_free(ext2_filsys *fs);
1015 extern errcode_t ext2fs_flush(ext2_filsys fs);
1016 extern errcode_t ext2fs_flush2(ext2_filsys fs, int flags);
1017 extern int ext2fs_bg_has_super(ext2_filsys fs, dgrp_t group_block);
1018 extern errcode_t ext2fs_super_and_bgd_loc2(ext2_filsys fs,
1020 blk64_t *ret_super_blk,
1021 blk64_t *ret_old_desc_blk,
1022 blk64_t *ret_new_desc_blk,
1023 blk_t *ret_used_blks);
1024 extern int ext2fs_super_and_bgd_loc(ext2_filsys fs,
1026 blk_t *ret_super_blk,
1027 blk_t *ret_old_desc_blk,
1028 blk_t *ret_new_desc_blk,
1030 extern void ext2fs_update_dynamic_rev(ext2_filsys fs);
1033 extern __u32 ext2fs_crc32_be(__u32 crc, unsigned char const *p, size_t len);
1034 extern __u32 ext2fs_crc32c_le(__u32 crc, unsigned char const *p, size_t len);
1037 extern void ext2fs_init_csum_seed(ext2_filsys fs);
1038 extern errcode_t ext2fs_mmp_csum_set(ext2_filsys fs, struct mmp_struct *mmp);
1039 extern int ext2fs_mmp_csum_verify(ext2_filsys, struct mmp_struct *mmp);
1040 extern int ext2fs_verify_csum_type(ext2_filsys fs, struct ext2_super_block *sb);
1041 extern errcode_t ext2fs_superblock_csum_set(ext2_filsys fs,
1042 struct ext2_super_block *sb);
1043 extern int ext2fs_superblock_csum_verify(ext2_filsys fs,
1044 struct ext2_super_block *sb);
1045 extern errcode_t ext2fs_ext_attr_block_csum_set(ext2_filsys fs,
1046 ext2_ino_t inum, blk64_t block,
1047 struct ext2_ext_attr_header *hdr);
1048 extern int ext2fs_ext_attr_block_csum_verify(ext2_filsys fs, ext2_ino_t inum,
1050 struct ext2_ext_attr_header *hdr);
1051 #define EXT2_DIRENT_TAIL(block, blocksize) \
1052 ((struct ext2_dir_entry_tail *)(((char *)(block)) + \
1053 (blocksize) - sizeof(struct ext2_dir_entry_tail)))
1055 extern void ext2fs_initialize_dirent_tail(ext2_filsys fs,
1056 struct ext2_dir_entry_tail *t);
1057 extern int ext2fs_dirent_has_tail(ext2_filsys fs,
1058 struct ext2_dir_entry *dirent);
1059 extern int ext2fs_dirent_csum_verify(ext2_filsys fs, ext2_ino_t inum,
1060 struct ext2_dir_entry *dirent);
1061 extern int ext2fs_dir_block_csum_verify(ext2_filsys fs, ext2_ino_t inum,
1062 struct ext2_dir_entry *dirent);
1063 extern errcode_t ext2fs_dir_block_csum_set(ext2_filsys fs, ext2_ino_t inum,
1064 struct ext2_dir_entry *dirent);
1065 extern errcode_t ext2fs_get_dx_countlimit(ext2_filsys fs,
1066 struct ext2_dir_entry *dirent,
1067 struct ext2_dx_countlimit **cc,
1069 extern errcode_t ext2fs_extent_block_csum_set(ext2_filsys fs,
1071 struct ext3_extent_header *eh);
1072 extern int ext2fs_extent_block_csum_verify(ext2_filsys fs,
1074 struct ext3_extent_header *eh);
1075 extern errcode_t ext2fs_block_bitmap_csum_set(ext2_filsys fs, dgrp_t group,
1076 char *bitmap, int size);
1077 extern int ext2fs_block_bitmap_csum_verify(ext2_filsys fs, dgrp_t group,
1078 char *bitmap, int size);
1079 extern errcode_t ext2fs_inode_bitmap_csum_set(ext2_filsys fs, dgrp_t group,
1080 char *bitmap, int size);
1081 extern int ext2fs_inode_bitmap_csum_verify(ext2_filsys fs, dgrp_t group,
1082 char *bitmap, int size);
1083 extern errcode_t ext2fs_inode_csum_set(ext2_filsys fs, ext2_ino_t inum,
1084 struct ext2_inode_large *inode);
1085 extern int ext2fs_inode_csum_verify(ext2_filsys fs, ext2_ino_t inum,
1086 struct ext2_inode_large *inode);
1087 extern void ext2fs_group_desc_csum_set(ext2_filsys fs, dgrp_t group);
1088 extern int ext2fs_group_desc_csum_verify(ext2_filsys fs, dgrp_t group);
1089 extern errcode_t ext2fs_set_gdt_csum(ext2_filsys fs);
1090 extern __u16 ext2fs_group_desc_csum(ext2_filsys fs, dgrp_t group);
1093 extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist);
1094 extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ext2_ino_t ino,
1095 blk_t blk, int blockcnt);
1096 extern errcode_t ext2fs_add_dir_block2(ext2_dblist dblist, ext2_ino_t ino,
1097 blk64_t blk, e2_blkcnt_t blockcnt);
1098 extern void ext2fs_dblist_sort(ext2_dblist dblist,
1099 EXT2_QSORT_TYPE (*sortfunc)(const void *,
1101 extern void ext2fs_dblist_sort2(ext2_dblist dblist,
1102 EXT2_QSORT_TYPE (*sortfunc)(const void *,
1104 extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist,
1105 int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info,
1108 extern errcode_t ext2fs_dblist_iterate2(ext2_dblist dblist,
1109 int (*func)(ext2_filsys fs, struct ext2_db_entry2 *db_info,
1112 extern errcode_t ext2fs_dblist_iterate3(ext2_dblist dblist,
1113 int (*func)(ext2_filsys fs, struct ext2_db_entry2 *db_info,
1115 unsigned long long start,
1116 unsigned long long count,
1118 extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ext2_ino_t ino,
1119 blk_t blk, int blockcnt);
1120 extern errcode_t ext2fs_set_dir_block2(ext2_dblist dblist, ext2_ino_t ino,
1121 blk64_t blk, e2_blkcnt_t blockcnt);
1122 extern errcode_t ext2fs_copy_dblist(ext2_dblist src,
1124 extern int ext2fs_dblist_count(ext2_dblist dblist);
1125 extern blk64_t ext2fs_dblist_count2(ext2_dblist dblist);
1126 extern errcode_t ext2fs_dblist_get_last(ext2_dblist dblist,
1127 struct ext2_db_entry **entry);
1128 extern errcode_t ext2fs_dblist_get_last2(ext2_dblist dblist,
1129 struct ext2_db_entry2 **entry);
1130 extern errcode_t ext2fs_dblist_drop_last(ext2_dblist dblist);
1134 ext2fs_dblist_dir_iterate(ext2_dblist dblist,
1137 int (*func)(ext2_ino_t dir,
1139 struct ext2_dir_entry *dirent,
1147 /* digest_encode.c */
1148 #define EXT2FS_DIGEST_SIZE EXT2FS_SHA256_LENGTH
1149 extern int ext2fs_digest_encode(const char *src, int len, char *dst);
1150 extern int ext2fs_digest_decode(const char *src, int len, char *dst);
1154 extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block,
1156 extern errcode_t ext2fs_read_dir_block2(ext2_filsys fs, blk_t block,
1157 void *buf, int flags);
1158 extern errcode_t ext2fs_read_dir_block3(ext2_filsys fs, blk64_t block,
1159 void *buf, int flags);
1160 extern errcode_t ext2fs_read_dir_block4(ext2_filsys fs, blk64_t block,
1161 void *buf, int flags, ext2_ino_t ino);
1162 extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block,
1164 extern errcode_t ext2fs_write_dir_block2(ext2_filsys fs, blk_t block,
1165 void *buf, int flags);
1166 extern errcode_t ext2fs_write_dir_block3(ext2_filsys fs, blk64_t block,
1167 void *buf, int flags);
1168 extern errcode_t ext2fs_write_dir_block4(ext2_filsys fs, blk64_t block,
1169 void *buf, int flags, ext2_ino_t ino);
1172 extern errcode_t ext2fs_dirhash(int version, const char *name, int len,
1174 ext2_dirhash_t *ret_hash,
1175 ext2_dirhash_t *ret_minor_hash);
1179 extern errcode_t ext2fs_get_rec_len(ext2_filsys fs,
1180 struct ext2_dir_entry *dirent,
1181 unsigned int *rec_len);
1182 extern errcode_t ext2fs_set_rec_len(ext2_filsys fs,
1184 struct ext2_dir_entry *dirent);
1185 extern errcode_t ext2fs_dir_iterate(ext2_filsys fs,
1189 int (*func)(struct ext2_dir_entry *dirent,
1195 extern errcode_t ext2fs_dir_iterate2(ext2_filsys fs,
1199 int (*func)(ext2_ino_t dir,
1201 struct ext2_dir_entry *dirent,
1209 extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest);
1212 extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir);
1215 extern errcode_t ext2fs_attr_get(ext2_filsys fs, struct ext2_inode *inode,
1216 int name_index, const char *name, char *buffer,
1217 size_t buffer_size, int *easize);
1219 extern __u32 ext2fs_ext_attr_hash_entry(struct ext2_ext_attr_entry *entry,
1221 extern errcode_t ext2fs_ext_attr_hash_entry2(ext2_filsys fs,
1222 struct ext2_ext_attr_entry *entry,
1223 void *data, __u32 *hash);
1224 int ext2fs_attr_get_next_attr(struct ext2_ext_attr_entry *entry, int name_index,
1225 char *buffer, int buffer_size, int start);
1226 errcode_t ext2fs_attr_set(ext2_filsys fs, ext2_ino_t ino,
1227 struct ext2_inode *inode,
1228 int name_index, const char *name, const char *value,
1229 int value_len, int flags);
1230 extern errcode_t ext2fs_expand_extra_isize(ext2_filsys fs, ext2_ino_t ino,
1231 struct ext2_inode_large *inode,
1232 int new_extra_isize, int *ret,
1234 extern errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf);
1235 extern errcode_t ext2fs_read_ext_attr2(ext2_filsys fs, blk64_t block,
1237 extern errcode_t ext2fs_read_ext_attr3(ext2_filsys fs, blk64_t block,
1238 void *buf, ext2_ino_t inum);
1239 extern errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block,
1241 extern errcode_t ext2fs_write_ext_attr2(ext2_filsys fs, blk64_t block,
1243 extern errcode_t ext2fs_write_ext_attr3(ext2_filsys fs, blk64_t block,
1244 void *buf, ext2_ino_t inum);
1245 extern errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk,
1247 int adjust, __u32 *newcount);
1248 extern errcode_t ext2fs_adjust_ea_refcount2(ext2_filsys fs, blk64_t blk,
1250 int adjust, __u32 *newcount);
1251 extern errcode_t ext2fs_adjust_ea_refcount3(ext2_filsys fs, blk64_t blk,
1253 int adjust, __u32 *newcount,
1255 errcode_t ext2fs_xattrs_write(struct ext2_xattr_handle *handle);
1256 errcode_t ext2fs_xattrs_read(struct ext2_xattr_handle *handle);
1257 errcode_t ext2fs_xattrs_iterate(struct ext2_xattr_handle *h,
1258 int (*func)(char *name, char *value,
1259 size_t value_len, void *data),
1261 errcode_t ext2fs_xattr_get(struct ext2_xattr_handle *h, const char *key,
1262 void **value, size_t *value_len);
1263 errcode_t ext2fs_xattr_set(struct ext2_xattr_handle *handle,
1267 errcode_t ext2fs_xattr_remove(struct ext2_xattr_handle *handle,
1269 errcode_t ext2fs_xattrs_open(ext2_filsys fs, ext2_ino_t ino,
1270 struct ext2_xattr_handle **handle);
1271 errcode_t ext2fs_xattrs_close(struct ext2_xattr_handle **handle);
1272 errcode_t ext2fs_free_ext_attr(ext2_filsys fs, ext2_ino_t ino,
1273 struct ext2_inode_large *inode);
1274 errcode_t ext2fs_xattrs_count(struct ext2_xattr_handle *handle, size_t *count);
1275 errcode_t ext2fs_xattr_inode_max_size(ext2_filsys fs, ext2_ino_t ino,
1277 #define XATTR_HANDLE_FLAG_RAW 0x0001
1278 errcode_t ext2fs_xattrs_flags(struct ext2_xattr_handle *handle,
1279 unsigned int *new_flags, unsigned int *old_flags);
1280 extern void ext2fs_ext_attr_block_rehash(struct ext2_ext_attr_header *header,
1281 struct ext2_ext_attr_entry *end);
1282 extern __u32 ext2fs_get_ea_inode_hash(struct ext2_inode *inode);
1283 extern void ext2fs_set_ea_inode_hash(struct ext2_inode *inode, __u32 hash);
1284 extern __u64 ext2fs_get_ea_inode_ref(struct ext2_inode *inode);
1285 extern void ext2fs_set_ea_inode_ref(struct ext2_inode *inode, __u64 ref_count);
1288 extern errcode_t ext2fs_extent_header_verify(void *ptr, int size);
1289 extern errcode_t ext2fs_extent_open(ext2_filsys fs, ext2_ino_t ino,
1290 ext2_extent_handle_t *handle);
1291 extern errcode_t ext2fs_extent_open2(ext2_filsys fs, ext2_ino_t ino,
1292 struct ext2_inode *inode,
1293 ext2_extent_handle_t *ret_handle);
1294 extern void ext2fs_extent_free(ext2_extent_handle_t handle);
1295 extern errcode_t ext2fs_extent_get(ext2_extent_handle_t handle,
1296 int flags, struct ext2fs_extent *extent);
1297 extern errcode_t ext2fs_extent_node_split(ext2_extent_handle_t handle);
1298 extern errcode_t ext2fs_extent_replace(ext2_extent_handle_t handle, int flags,
1299 struct ext2fs_extent *extent);
1300 extern errcode_t ext2fs_extent_insert(ext2_extent_handle_t handle, int flags,
1301 struct ext2fs_extent *extent);
1302 extern errcode_t ext2fs_extent_set_bmap(ext2_extent_handle_t handle,
1303 blk64_t logical, blk64_t physical,
1305 extern errcode_t ext2fs_extent_delete(ext2_extent_handle_t handle, int flags);
1306 extern errcode_t ext2fs_extent_get_info(ext2_extent_handle_t handle,
1307 struct ext2_extent_info *info);
1308 extern errcode_t ext2fs_extent_goto(ext2_extent_handle_t handle,
1310 extern errcode_t ext2fs_extent_goto2(ext2_extent_handle_t handle,
1311 int leaf_level, blk64_t blk);
1312 extern errcode_t ext2fs_extent_fix_parents(ext2_extent_handle_t handle);
1313 size_t ext2fs_max_extent_depth(ext2_extent_handle_t handle);
1316 #define EXT2_FALLOCATE_ZERO_BLOCKS (0x1)
1317 #define EXT2_FALLOCATE_FORCE_INIT (0x2)
1318 #define EXT2_FALLOCATE_FORCE_UNINIT (0x4)
1319 #define EXT2_FALLOCATE_INIT_BEYOND_EOF (0x8)
1320 #define EXT2_FALLOCATE_ALL_FLAGS (0xF)
1321 errcode_t ext2fs_fallocate(ext2_filsys fs, int flags, ext2_ino_t ino,
1322 struct ext2_inode *inode, blk64_t goal,
1323 blk64_t start, blk64_t len);
1326 extern errcode_t ext2fs_file_open2(ext2_filsys fs, ext2_ino_t ino,
1327 struct ext2_inode *inode,
1328 int flags, ext2_file_t *ret);
1329 extern errcode_t ext2fs_file_open(ext2_filsys fs, ext2_ino_t ino,
1330 int flags, ext2_file_t *ret);
1331 extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file);
1332 struct ext2_inode *ext2fs_file_get_inode(ext2_file_t file);
1333 extern ext2_ino_t ext2fs_file_get_inode_num(ext2_file_t file);
1334 extern errcode_t ext2fs_file_close(ext2_file_t file);
1335 extern errcode_t ext2fs_file_flush(ext2_file_t file);
1336 extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf,
1337 unsigned int wanted, unsigned int *got);
1338 extern errcode_t ext2fs_file_write(ext2_file_t file, const void *buf,
1339 unsigned int nbytes, unsigned int *written);
1340 extern errcode_t ext2fs_file_llseek(ext2_file_t file, __u64 offset,
1341 int whence, __u64 *ret_pos);
1342 extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset,
1343 int whence, ext2_off_t *ret_pos);
1344 errcode_t ext2fs_file_get_lsize(ext2_file_t file, __u64 *ret_size);
1345 extern ext2_off_t ext2fs_file_get_size(ext2_file_t file);
1346 extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size);
1347 extern errcode_t ext2fs_file_set_size2(ext2_file_t file, ext2_off64_t size);
1350 extern char *ext2fs_find_block_device(dev_t device);
1353 extern errcode_t ext2fs_sync_device(int fd, int flushb);
1356 extern void ext2fs_free(ext2_filsys fs);
1357 extern void ext2fs_free_dblist(ext2_dblist dblist);
1358 extern void ext2fs_badblocks_list_free(ext2_badblocks_list bb);
1359 extern void ext2fs_u32_list_free(ext2_u32_list bb);
1362 extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap);
1363 extern errcode_t ext2fs_make_generic_bitmap(errcode_t magic, ext2_filsys fs,
1364 __u32 start, __u32 end,
1366 const char *descr, char *init_map,
1367 ext2fs_generic_bitmap *ret);
1368 extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start,
1372 ext2fs_generic_bitmap *ret);
1373 extern errcode_t ext2fs_copy_generic_bitmap(ext2fs_generic_bitmap src,
1374 ext2fs_generic_bitmap *dest);
1375 extern void ext2fs_clear_generic_bitmap(ext2fs_generic_bitmap bitmap);
1376 extern errcode_t ext2fs_fudge_generic_bitmap_end(ext2fs_inode_bitmap bitmap,
1381 extern void ext2fs_set_generic_bitmap_padding(ext2fs_generic_bitmap map);
1382 extern errcode_t ext2fs_resize_generic_bitmap(errcode_t magic,
1385 ext2fs_generic_bitmap bmap);
1386 extern errcode_t ext2fs_compare_generic_bitmap(errcode_t magic, errcode_t neq,
1387 ext2fs_generic_bitmap bm1,
1388 ext2fs_generic_bitmap bm2);
1389 extern errcode_t ext2fs_get_generic_bitmap_range(ext2fs_generic_bitmap bmap,
1391 __u32 start, __u32 num,
1393 extern errcode_t ext2fs_set_generic_bitmap_range(ext2fs_generic_bitmap bmap,
1395 __u32 start, __u32 num,
1397 extern errcode_t ext2fs_find_first_zero_generic_bitmap(ext2fs_generic_bitmap bitmap,
1398 __u32 start, __u32 end,
1400 extern errcode_t ext2fs_find_first_set_generic_bitmap(ext2fs_generic_bitmap bitmap,
1401 __u32 start, __u32 end,
1404 /* gen_bitmap64.c */
1405 void ext2fs_free_generic_bmap(ext2fs_generic_bitmap bmap);
1406 errcode_t ext2fs_alloc_generic_bmap(ext2_filsys fs, errcode_t magic,
1407 int type, __u64 start, __u64 end,
1410 ext2fs_generic_bitmap *ret);
1411 errcode_t ext2fs_copy_generic_bmap(ext2fs_generic_bitmap src,
1412 ext2fs_generic_bitmap *dest);
1413 void ext2fs_clear_generic_bmap(ext2fs_generic_bitmap bitmap);
1414 errcode_t ext2fs_fudge_generic_bmap_end(ext2fs_generic_bitmap bitmap,
1416 __u64 end, __u64 *oend);
1417 void ext2fs_set_generic_bmap_padding(ext2fs_generic_bitmap bmap);
1418 errcode_t ext2fs_resize_generic_bmap(ext2fs_generic_bitmap bmap,
1420 __u64 new_real_end);
1421 errcode_t ext2fs_compare_generic_bmap(errcode_t neq,
1422 ext2fs_generic_bitmap bm1,
1423 ext2fs_generic_bitmap bm2);
1424 errcode_t ext2fs_get_generic_bmap_range(ext2fs_generic_bitmap bmap,
1425 __u64 start, unsigned int num,
1427 errcode_t ext2fs_set_generic_bmap_range(ext2fs_generic_bitmap bmap,
1428 __u64 start, unsigned int num,
1430 errcode_t ext2fs_convert_subcluster_bitmap(ext2_filsys fs,
1431 ext2fs_block_bitmap *bitmap);
1433 /* get_num_dirs.c */
1434 extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs);
1437 extern errcode_t ext2fs_get_device_size(const char *file, int blocksize,
1439 extern errcode_t ext2fs_get_device_size2(const char *file, int blocksize,
1440 blk64_t *retblocks);
1443 extern int ext2fs_get_dio_alignment(int fd);
1444 errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize);
1445 errcode_t ext2fs_get_device_phys_sectsize(const char *file, int *sectsize);
1448 errcode_t ext2fs_iblk_add_blocks(ext2_filsys fs, struct ext2_inode *inode,
1449 blk64_t num_blocks);
1450 errcode_t ext2fs_iblk_sub_blocks(ext2_filsys fs, struct ext2_inode *inode,
1451 blk64_t num_blocks);
1452 errcode_t ext2fs_iblk_set(ext2_filsys fs, struct ext2_inode *inode, blk64_t b);
1455 extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags);
1456 extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags);
1457 extern errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd, int flags);
1458 extern errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd, int flags);
1459 extern errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags);
1460 extern errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags);
1463 errcode_t ext2fs_read_ind_block(ext2_filsys fs, blk_t blk, void *buf);
1464 errcode_t ext2fs_write_ind_block(ext2_filsys fs, blk_t blk, void *buf);
1467 extern errcode_t ext2fs_initialize(const char *name, int flags,
1468 struct ext2_super_block *param,
1469 io_manager manager, ext2_filsys *ret_fs);
1472 extern void ext2fs_free_icount(ext2_icount_t icount);
1473 extern errcode_t ext2fs_create_icount_tdb(ext2_filsys fs, char *tdb_dir,
1474 int flags, ext2_icount_t *ret);
1475 extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags,
1477 ext2_icount_t hint, ext2_icount_t *ret);
1478 extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags,
1480 ext2_icount_t *ret);
1481 extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ext2_ino_t ino,
1483 extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ext2_ino_t ino,
1485 extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ext2_ino_t ino,
1487 extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ext2_ino_t ino,
1489 extern ext2_ino_t ext2fs_get_icount_size(ext2_icount_t icount);
1490 errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *);
1494 extern errcode_t ext2fs_get_memalign(unsigned long size,
1495 unsigned long align, void *ptr);
1498 extern errcode_t ext2fs_inline_data_init(ext2_filsys fs, ext2_ino_t ino);
1499 extern errcode_t ext2fs_inline_data_size(ext2_filsys fs, ext2_ino_t ino,
1501 extern errcode_t ext2fs_inline_data_get(ext2_filsys fs, ext2_ino_t ino,
1502 struct ext2_inode *inode,
1503 void *buf, size_t *size);
1504 extern errcode_t ext2fs_inline_data_set(ext2_filsys fs, ext2_ino_t ino,
1505 struct ext2_inode *inode,
1506 void *buf, size_t size);
1509 extern errcode_t ext2fs_create_inode_cache(ext2_filsys fs,
1510 unsigned int cache_size);
1511 extern void ext2fs_free_inode_cache(struct ext2_inode_cache *icache);
1512 extern errcode_t ext2fs_flush_icache(ext2_filsys fs);
1513 extern errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan,
1515 struct ext2_inode *inode,
1517 #define EXT2_INODE_SCAN_DEFAULT_BUFFER_BLOCKS 8
1518 extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks,
1519 ext2_inode_scan *ret_scan);
1520 extern void ext2fs_close_inode_scan(ext2_inode_scan scan);
1521 extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino,
1522 struct ext2_inode *inode);
1523 extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan,
1525 extern void ext2fs_set_inode_callback
1526 (ext2_inode_scan scan,
1527 errcode_t (*done_group)(ext2_filsys fs,
1528 ext2_inode_scan scan,
1531 void *done_group_data);
1532 extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags,
1534 extern errcode_t ext2fs_read_inode_full(ext2_filsys fs, ext2_ino_t ino,
1535 struct ext2_inode * inode,
1537 extern errcode_t ext2fs_read_inode (ext2_filsys fs, ext2_ino_t ino,
1538 struct ext2_inode * inode);
1539 extern errcode_t ext2fs_write_inode_full(ext2_filsys fs, ext2_ino_t ino,
1540 struct ext2_inode * inode,
1542 extern errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino,
1543 struct ext2_inode * inode);
1544 extern errcode_t ext2fs_write_new_inode(ext2_filsys fs, ext2_ino_t ino,
1545 struct ext2_inode * inode);
1546 extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks);
1547 extern errcode_t ext2fs_check_directory(ext2_filsys fs, ext2_ino_t ino);
1550 extern io_manager inode_io_manager;
1551 extern errcode_t ext2fs_inode_io_intern(ext2_filsys fs, ext2_ino_t ino,
1553 extern errcode_t ext2fs_inode_io_intern2(ext2_filsys fs, ext2_ino_t ino,
1554 struct ext2_inode *inode,
1558 extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags);
1559 extern errcode_t ext2fs_check_mount_point(const char *device, int *mount_flags,
1560 char *mtpt, int mtlen);
1564 * NOTE: This function removes from an inode the blocks "start", "end", and
1565 * every block in between.
1567 extern errcode_t ext2fs_punch(ext2_filsys fs, ext2_ino_t ino,
1568 struct ext2_inode *inode,
1569 char *block_buf, blk64_t start,
1573 extern errcode_t ext2fs_lookup(ext2_filsys fs, ext2_ino_t dir, const char *name,
1574 int namelen, char *buf, ext2_ino_t *inode);
1575 extern errcode_t ext2fs_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
1576 const char *name, ext2_ino_t *inode);
1577 errcode_t ext2fs_namei_follow(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
1578 const char *name, ext2_ino_t *inode);
1579 extern errcode_t ext2fs_follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
1580 ext2_ino_t inode, ext2_ino_t *res_inode);
1583 int ext2fs_native_flag(void);
1586 extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino,
1587 ext2_ino_t parent_ino, char **block);
1588 extern errcode_t ext2fs_new_dir_inline_data(ext2_filsys fs, ext2_ino_t dir_ino,
1589 ext2_ino_t parent_ino, __u32 *iblock);
1592 extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum,
1596 extern errcode_t ext2fs_zero_blocks(ext2_filsys fs, blk_t blk, int num,
1597 blk_t *ret_blk, int *ret_count);
1598 extern errcode_t ext2fs_zero_blocks2(ext2_filsys fs, blk64_t blk, int num,
1599 blk64_t *ret_blk, int *ret_count);
1600 extern errcode_t ext2fs_create_journal_superblock(ext2_filsys fs,
1601 __u32 num_blocks, int flags,
1603 extern errcode_t ext2fs_add_journal_device(ext2_filsys fs,
1604 ext2_filsys journal_dev);
1605 extern errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t num_blocks,
1607 extern errcode_t ext2fs_add_journal_inode2(ext2_filsys fs, blk_t num_blocks,
1608 blk64_t goal, int flags);
1609 extern int ext2fs_default_journal_size(__u64 num_blocks);
1610 extern int ext2fs_journal_sb_start(int blocksize);
1613 extern errcode_t ext2fs_open(const char *name, int flags, int superblock,
1614 unsigned int block_size, io_manager manager,
1615 ext2_filsys *ret_fs);
1616 extern errcode_t ext2fs_open2(const char *name, const char *io_options,
1617 int flags, int superblock,
1618 unsigned int block_size, io_manager manager,
1619 ext2_filsys *ret_fs);
1621 * The dgrp_t argument to these two functions is not actually a group number
1622 * but a block number offset within a group table! Convert with the formula
1623 * (group_number / groups_per_block).
1625 extern blk64_t ext2fs_descriptor_block_loc2(ext2_filsys fs,
1626 blk64_t group_block, dgrp_t i);
1627 extern blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block,
1629 errcode_t ext2fs_get_data_io(ext2_filsys fs, io_channel *old_io);
1630 errcode_t ext2fs_set_data_io(ext2_filsys fs, io_channel new_io);
1631 errcode_t ext2fs_rewrite_to_io(ext2_filsys fs, io_channel new_io);
1633 /* get_pathname.c */
1634 extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino,
1638 errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name,
1639 ext2_ino_t ino, int flags);
1640 errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir, const char *name,
1641 ext2_ino_t ino, int flags);
1644 errcode_t ext2fs_symlink(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t ino,
1645 const char *name, const char *target);
1646 int ext2fs_is_fast_symlink(struct ext2_inode *inode);
1649 errcode_t ext2fs_mmp_read(ext2_filsys fs, blk64_t mmp_blk, void *buf);
1650 errcode_t ext2fs_mmp_write(ext2_filsys fs, blk64_t mmp_blk, void *buf);
1651 errcode_t ext2fs_mmp_clear(ext2_filsys fs);
1652 errcode_t ext2fs_mmp_init(ext2_filsys fs);
1653 errcode_t ext2fs_mmp_start(ext2_filsys fs);
1654 errcode_t ext2fs_mmp_update(ext2_filsys fs);
1655 errcode_t ext2fs_mmp_update2(ext2_filsys fs, int immediately);
1656 errcode_t ext2fs_mmp_stop(ext2_filsys fs);
1657 unsigned ext2fs_mmp_new_seq(void);
1660 extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs,
1661 ext2_badblocks_list *bb_list);
1663 /* read_bb_file.c */
1664 extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f,
1665 ext2_badblocks_list *bb_list,
1667 void (*invalid)(ext2_filsys fs,
1671 extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f,
1672 ext2_badblocks_list *bb_list,
1673 void (*invalid)(ext2_filsys fs,
1677 extern errcode_t ext2fs_create_resize_inode(ext2_filsys fs);
1680 #define EXT2FS_SHA256_LENGTH 32
1682 extern void ext2fs_sha256(const unsigned char *in, unsigned long in_size,
1683 unsigned char out[EXT2FS_SHA256_LENGTH]);
1687 #define EXT2FS_SHA512_LENGTH 64
1688 extern void ext2fs_sha512(const unsigned char *in, unsigned long in_size,
1689 unsigned char out[EXT2FS_SHA512_LENGTH]);
1692 extern errcode_t ext2fs_dirent_swab_in2(ext2_filsys fs, char *buf, size_t size,
1694 extern errcode_t ext2fs_dirent_swab_in(ext2_filsys fs, char *buf, int flags);
1695 extern errcode_t ext2fs_dirent_swab_out2(ext2_filsys fs, char *buf, size_t size,
1697 extern errcode_t ext2fs_dirent_swab_out(ext2_filsys fs, char *buf, int flags);
1698 extern void ext2fs_swap_ext_attr(char *to, char *from, int bufsize,
1700 extern void ext2fs_swap_ext_attr_header(struct ext2_ext_attr_header *to_header,
1701 struct ext2_ext_attr_header *from_hdr);
1702 extern void ext2fs_swap_ext_attr_entry(struct ext2_ext_attr_entry *to_entry,
1703 struct ext2_ext_attr_entry *from_entry);
1704 extern void ext2fs_swap_super(struct ext2_super_block * super);
1705 extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp);
1706 extern void ext2fs_swap_group_desc2(ext2_filsys, struct ext2_group_desc *gdp);
1707 extern void ext2fs_swap_inode_full(ext2_filsys fs, struct ext2_inode_large *t,
1708 struct ext2_inode_large *f, int hostorder,
1710 extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t,
1711 struct ext2_inode *f, int hostorder);
1712 extern void ext2fs_swap_mmp(struct mmp_struct *mmp);
1715 extern int ext2fs_open_file(const char *pathname, int flags, mode_t mode);
1716 extern int ext2fs_stat(const char *path, ext2fs_struct_stat *buf);
1717 extern int ext2fs_fstat(int fd, ext2fs_struct_stat *buf);
1720 extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode);
1721 extern int ext2fs_inode_has_valid_blocks2(ext2_filsys fs,
1722 struct ext2_inode *inode);
1725 extern int ext2fs_parse_version_string(const char *ver_string);
1726 extern int ext2fs_get_library_version(const char **ver_string,
1727 const char **date_string);
1729 /* write_bb_file.c */
1730 extern errcode_t ext2fs_write_bb_FILE(ext2_badblocks_list bb_list,
1735 /* inline functions */
1736 #ifdef NO_INLINE_FUNCS
1737 extern errcode_t ext2fs_get_mem(unsigned long size, void *ptr);
1738 extern errcode_t ext2fs_get_memzero(unsigned long size, void *ptr);
1739 extern errcode_t ext2fs_get_array(unsigned long count,
1740 unsigned long size, void *ptr);
1741 extern errcode_t ext2fs_get_arrayzero(unsigned long count,
1742 unsigned long size, void *ptr);
1743 extern errcode_t ext2fs_free_mem(void *ptr);
1744 extern errcode_t ext2fs_resize_mem(unsigned long old_size,
1745 unsigned long size, void *ptr);
1746 extern void ext2fs_mark_super_dirty(ext2_filsys fs);
1747 extern void ext2fs_mark_changed(ext2_filsys fs);
1748 extern int ext2fs_test_changed(ext2_filsys fs);
1749 extern void ext2fs_mark_valid(ext2_filsys fs);
1750 extern void ext2fs_unmark_valid(ext2_filsys fs);
1751 extern int ext2fs_test_valid(ext2_filsys fs);
1752 extern void ext2fs_mark_ib_dirty(ext2_filsys fs);
1753 extern void ext2fs_mark_bb_dirty(ext2_filsys fs);
1754 extern int ext2fs_test_ib_dirty(ext2_filsys fs);
1755 extern int ext2fs_test_bb_dirty(ext2_filsys fs);
1756 extern dgrp_t ext2fs_group_of_blk(ext2_filsys fs, blk_t blk);
1757 extern dgrp_t ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino);
1758 extern blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group);
1759 extern blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group);
1760 extern blk_t ext2fs_inode_data_blocks(ext2_filsys fs,
1761 struct ext2_inode *inode);
1762 extern int ext2fs_htree_intnode_maxrecs(ext2_filsys fs, int blocks);
1763 extern unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b);
1764 extern __u64 ext2fs_div64_ceil(__u64 a, __u64 b);
1765 extern int ext2fs_dirent_name_len(const struct ext2_dir_entry *entry);
1766 extern void ext2fs_dirent_set_name_len(struct ext2_dir_entry *entry, int len);
1767 extern int ext2fs_dirent_file_type(const struct ext2_dir_entry *entry);
1768 extern void ext2fs_dirent_set_file_type(struct ext2_dir_entry *entry, int type);
1769 extern struct ext2_inode *ext2fs_inode(struct ext2_inode_large * large_inode);
1770 extern const struct ext2_inode *ext2fs_const_inode(const struct ext2_inode_large * large_inode);
1775 * The actual inlined functions definitions themselves...
1777 * If NO_INLINE_FUNCS is defined, then we won't try to do inline
1780 #if (defined(INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS))
1781 #ifdef INCLUDE_INLINE_FUNCS
1782 #define _INLINE_ extern
1784 #if (__STDC_VERSION__ >= 199901L)
1785 #define _INLINE_ inline
1788 #define _INLINE_ extern __inline__
1789 #else /* For Watcom C */
1790 #define _INLINE_ extern inline
1791 #endif /* __GNUC__ */
1792 #endif /* __STDC_VERSION__ >= 199901L */
1795 #ifndef EXT2_CUSTOM_MEMORY_ROUTINES
1798 * Allocate memory. The 'ptr' arg must point to a pointer.
1800 _INLINE_ errcode_t ext2fs_get_mem(unsigned long size, void *ptr)
1806 return EXT2_ET_NO_MEMORY;
1807 memcpy(ptr, &pp, sizeof (pp));
1811 _INLINE_ errcode_t ext2fs_get_memzero(unsigned long size, void *ptr)
1817 return EXT2_ET_NO_MEMORY;
1818 memset(pp, 0, size);
1819 memcpy(ptr, &pp, sizeof(pp));
1823 _INLINE_ errcode_t ext2fs_get_array(unsigned long count, unsigned long size, void *ptr)
1825 if (count && (~0UL)/count < size)
1826 return EXT2_ET_NO_MEMORY;
1827 return ext2fs_get_mem(count*size, ptr);
1830 _INLINE_ errcode_t ext2fs_get_arrayzero(unsigned long count,
1831 unsigned long size, void *ptr)
1835 if (count && (~0UL)/count < size)
1836 return EXT2_ET_NO_MEMORY;
1837 pp = calloc(count, size);
1839 return EXT2_ET_NO_MEMORY;
1840 memcpy(ptr, &pp, sizeof(pp));
1845 * Free memory. The 'ptr' arg must point to a pointer.
1847 _INLINE_ errcode_t ext2fs_free_mem(void *ptr)
1851 memcpy(&p, ptr, sizeof(p));
1854 memcpy(ptr, &p, sizeof(p));
1859 * Resize memory. The 'ptr' arg must point to a pointer.
1861 _INLINE_ errcode_t ext2fs_resize_mem(unsigned long EXT2FS_ATTR((unused)) old_size,
1862 unsigned long size, void *ptr)
1866 /* Use "memcpy" for pointer assignments here to avoid problems
1867 * with C99 strict type aliasing rules. */
1868 memcpy(&p, ptr, sizeof(p));
1869 p = realloc(p, size);
1871 return EXT2_ET_NO_MEMORY;
1872 memcpy(ptr, &p, sizeof(p));
1875 #endif /* Custom memory routines */
1878 * Mark a filesystem superblock as dirty
1880 _INLINE_ void ext2fs_mark_super_dirty(ext2_filsys fs)
1882 fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_CHANGED;
1886 * Mark a filesystem as changed
1888 _INLINE_ void ext2fs_mark_changed(ext2_filsys fs)
1890 fs->flags |= EXT2_FLAG_CHANGED;
1894 * Check to see if a filesystem has changed
1896 _INLINE_ int ext2fs_test_changed(ext2_filsys fs)
1898 return (fs->flags & EXT2_FLAG_CHANGED);
1902 * Mark a filesystem as valid
1904 _INLINE_ void ext2fs_mark_valid(ext2_filsys fs)
1906 fs->flags |= EXT2_FLAG_VALID;
1910 * Mark a filesystem as NOT valid
1912 _INLINE_ void ext2fs_unmark_valid(ext2_filsys fs)
1914 fs->flags &= ~EXT2_FLAG_VALID;
1918 * Check to see if a filesystem is valid
1920 _INLINE_ int ext2fs_test_valid(ext2_filsys fs)
1922 return (fs->flags & EXT2_FLAG_VALID);
1926 * Mark the inode bitmap as dirty
1928 _INLINE_ void ext2fs_mark_ib_dirty(ext2_filsys fs)
1930 fs->flags |= EXT2_FLAG_IB_DIRTY | EXT2_FLAG_CHANGED;
1934 * Mark the block bitmap as dirty
1936 _INLINE_ void ext2fs_mark_bb_dirty(ext2_filsys fs)
1938 fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_CHANGED;
1942 * Check to see if a filesystem's inode bitmap is dirty
1944 _INLINE_ int ext2fs_test_ib_dirty(ext2_filsys fs)
1946 return (fs->flags & EXT2_FLAG_IB_DIRTY);
1950 * Check to see if a filesystem's block bitmap is dirty
1952 _INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs)
1954 return (fs->flags & EXT2_FLAG_BB_DIRTY);
1958 * Return the group # of a block
1960 _INLINE_ dgrp_t ext2fs_group_of_blk(ext2_filsys fs, blk_t blk)
1962 return ext2fs_group_of_blk2(fs, blk);
1965 * Return the group # of an inode number
1967 _INLINE_ dgrp_t ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino)
1969 return (ino - 1) / fs->super->s_inodes_per_group;
1973 * Return the first block (inclusive) in a group
1975 _INLINE_ blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group)
1977 return (blk_t) ext2fs_group_first_block2(fs, group);
1981 * Return the last block (inclusive) in a group
1983 _INLINE_ blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group)
1985 return (blk_t) ext2fs_group_last_block2(fs, group);
1988 _INLINE_ blk_t ext2fs_inode_data_blocks(ext2_filsys fs,
1989 struct ext2_inode *inode)
1991 return (blk_t) ext2fs_inode_data_blocks2(fs, inode);
1994 _INLINE_ int ext2fs_htree_intnode_maxrecs(ext2_filsys fs, int blocks)
1996 return blocks * ((fs->blocksize - 8) / sizeof(struct ext2_dx_entry));
2000 * This is an efficient, overflow safe way of calculating ceil((1.0 * a) / b)
2002 _INLINE_ unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b)
2006 return ((a - 1) / b) + 1;
2009 _INLINE_ __u64 ext2fs_div64_ceil(__u64 a, __u64 b)
2013 return ((a - 1) / b) + 1;
2016 _INLINE_ int ext2fs_dirent_name_len(const struct ext2_dir_entry *entry)
2018 return entry->name_len & 0xff;
2021 _INLINE_ void ext2fs_dirent_set_name_len(struct ext2_dir_entry *entry, int len)
2023 entry->name_len = (entry->name_len & 0xff00) | (len & 0xff);
2026 _INLINE_ int ext2fs_dirent_file_type(const struct ext2_dir_entry *entry)
2028 return entry->name_len >> 8;
2031 _INLINE_ void ext2fs_dirent_set_file_type(struct ext2_dir_entry *entry, int type)
2033 entry->name_len = (entry->name_len & 0xff) | (type << 8);
2036 _INLINE_ struct ext2_inode *ext2fs_inode(struct ext2_inode_large * large_inode)
2038 /* It is always safe to convert large inode to a small inode */
2039 return (struct ext2_inode *) large_inode;
2042 _INLINE_ const struct ext2_inode *
2043 ext2fs_const_inode(const struct ext2_inode_large * large_inode)
2045 /* It is always safe to convert large inode to a small inode */
2046 return (const struct ext2_inode *) large_inode;
2052 /* htree levels for ext4 */
2053 #define EXT4_HTREE_LEVEL_COMPAT 2
2054 #define EXT4_HTREE_LEVEL 3
2056 static inline unsigned int ext2_dir_htree_level(ext2_filsys fs)
2058 if (ext2fs_has_feature_largedir(fs->super))
2059 return EXT4_HTREE_LEVEL;
2061 return EXT4_HTREE_LEVEL_COMPAT;
2068 #endif /* _EXT2FS_EXT2FS_H */