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 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
209 * Special flag in the ext2 inode i_flag field that means that this is
210 * a new inode. (So that ext2_write_inode() can clear extra fields.)
212 #define EXT2_NEW_INODE_FL 0x80000000
215 * Flags for mkjournal
217 #define EXT2_MKJOURNAL_V1_SUPER 0x0000001 /* create V1 superblock (deprecated) */
218 #define EXT2_MKJOURNAL_LAZYINIT 0x0000002 /* don't zero journal inode before use*/
219 #define EXT2_MKJOURNAL_NO_MNT_CHECK 0x0000004 /* don't check mount status */
221 struct blk_alloc_ctx;
222 struct opaque_ext2_group_desc;
224 struct struct_ext2_filsys {
229 struct ext2_super_block * super;
230 unsigned int blocksize;
232 dgrp_t group_desc_count;
233 unsigned long desc_blocks;
234 struct opaque_ext2_group_desc * group_desc;
235 unsigned int inode_blocks_per_group;
236 ext2fs_inode_bitmap inode_map;
237 ext2fs_block_bitmap block_map;
238 /* XXX FIXME-64: not 64-bit safe, but not used? */
239 errcode_t (*get_blocks)(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks);
240 errcode_t (*check_directory)(ext2_filsys fs, ext2_ino_t ino);
241 errcode_t (*write_bitmaps)(ext2_filsys fs);
242 errcode_t (*read_inode)(ext2_filsys fs, ext2_ino_t ino,
243 struct ext2_inode *inode);
244 errcode_t (*write_inode)(ext2_filsys fs, ext2_ino_t ino,
245 struct ext2_inode *inode);
246 ext2_badblocks_list badblocks;
248 __u32 stride; /* for mke2fs */
249 struct ext2_super_block * orig_super;
250 struct ext2_image_hdr * image_header;
253 int cluster_ratio_bits;
254 __u16 default_bitmap_type;
257 * Reserved for future expansion
262 * Reserved for the use of the calling application.
269 struct ext2_inode_cache *icache;
273 * More callback functions
275 errcode_t (*get_alloc_block)(ext2_filsys fs, blk64_t goal,
277 errcode_t (*get_alloc_block2)(ext2_filsys fs, blk64_t goal,
278 blk64_t *ret, struct blk_alloc_ctx *ctx);
279 void (*block_alloc_stats)(ext2_filsys fs, blk64_t blk, int inuse);
282 * Buffers for Multiple mount protection(MMP) block.
289 * Time at which e2fsck last updated the MMP block.
291 long mmp_last_written;
293 /* progress operation functions */
294 struct ext2fs_progress_ops *progress_ops;
296 /* Precomputed FS UUID checksum for seeding other checksums */
299 io_channel journal_io;
302 /* New block range allocation hooks */
303 errcode_t (*new_range)(ext2_filsys fs, int flags, blk64_t goal,
304 blk64_t len, blk64_t *pblk, blk64_t *plen);
305 void (*block_alloc_stats_range)(ext2_filsys fs, blk64_t blk, blk_t num,
308 /* hashmap for SHA of data blocks */
309 struct ext2fs_hashmap* block_sha_map;
311 const struct ext2fs_nls_table *encoding;
314 #if EXT2_FLAT_INCLUDES
315 #include "e2_bitops.h"
317 #include <ext2fs/bitops.h>
321 * 64-bit bitmap backend types
323 #define EXT2FS_BMAP64_BITARRAY 1
324 #define EXT2FS_BMAP64_RBTREE 2
325 #define EXT2FS_BMAP64_AUTODIR 3
328 * Return flags for the block iterator functions
330 #define BLOCK_CHANGED 1
331 #define BLOCK_ABORT 2
332 #define BLOCK_ERROR 4
333 #define BLOCK_INLINE_DATA_CHANGED 8
336 * Block interate flags
338 * BLOCK_FLAG_APPEND, or BLOCK_FLAG_HOLE, indicates that the interator
339 * function should be called on blocks where the block number is zero.
340 * This is used by ext2fs_expand_dir() to be able to add a new block
341 * to an inode. It can also be used for programs that want to be able
342 * to deal with files that contain "holes".
344 * BLOCK_FLAG_DEPTH_TRAVERSE indicates that the iterator function for
345 * the indirect, doubly indirect, etc. blocks should be called after
346 * all of the blocks contained in the indirect blocks are processed.
347 * This is useful if you are going to be deallocating blocks from an
350 * BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be
351 * called for data blocks only.
353 * BLOCK_FLAG_READ_ONLY is a promise by the caller that it will not
354 * modify returned block number.
356 * BLOCK_FLAG_NO_LARGE is for internal use only. It informs
357 * ext2fs_block_iterate2 that large files won't be accepted.
359 #define BLOCK_FLAG_APPEND 1
360 #define BLOCK_FLAG_HOLE 1
361 #define BLOCK_FLAG_DEPTH_TRAVERSE 2
362 #define BLOCK_FLAG_DATA_ONLY 4
363 #define BLOCK_FLAG_READ_ONLY 8
365 #define BLOCK_FLAG_NO_LARGE 0x1000
368 * Magic "block count" return values for the block iterator function.
370 #define BLOCK_COUNT_IND (-1)
371 #define BLOCK_COUNT_DIND (-2)
372 #define BLOCK_COUNT_TIND (-3)
373 #define BLOCK_COUNT_TRANSLATOR (-4)
375 #define BLOCK_ALLOC_UNKNOWN 0
376 #define BLOCK_ALLOC_DATA 1
377 #define BLOCK_ALLOC_METADATA 2
379 struct blk_alloc_ctx {
381 struct ext2_inode *inode;
388 * Flags for ext2fs_move_blocks
390 #define EXT2_BMOVE_GET_DBLIST 0x0001
391 #define EXT2_BMOVE_DEBUG 0x0002
395 * Generic (non-filesystem layout specific) extents structure
398 #define EXT2_EXTENT_FLAGS_LEAF 0x0001
399 #define EXT2_EXTENT_FLAGS_UNINIT 0x0002
400 #define EXT2_EXTENT_FLAGS_SECOND_VISIT 0x0004
402 struct ext2fs_extent {
403 blk64_t e_pblk; /* first physical block */
404 blk64_t e_lblk; /* first logical block extent covers */
405 __u32 e_len; /* number of blocks covered by extent */
406 __u32 e_flags; /* extent flags */
409 typedef struct ext2_extent_handle *ext2_extent_handle_t;
410 typedef struct ext2_extent_path *ext2_extent_path_t;
413 * Flags used by ext2fs_extent_get()
415 #define EXT2_EXTENT_CURRENT 0x0000
416 #define EXT2_EXTENT_MOVE_MASK 0x000F
417 #define EXT2_EXTENT_ROOT 0x0001
418 #define EXT2_EXTENT_LAST_LEAF 0x0002
419 #define EXT2_EXTENT_FIRST_SIB 0x0003
420 #define EXT2_EXTENT_LAST_SIB 0x0004
421 #define EXT2_EXTENT_NEXT_SIB 0x0005
422 #define EXT2_EXTENT_PREV_SIB 0x0006
423 #define EXT2_EXTENT_NEXT_LEAF 0x0007
424 #define EXT2_EXTENT_PREV_LEAF 0x0008
425 #define EXT2_EXTENT_NEXT 0x0009
426 #define EXT2_EXTENT_PREV 0x000A
427 #define EXT2_EXTENT_UP 0x000B
428 #define EXT2_EXTENT_DOWN 0x000C
429 #define EXT2_EXTENT_DOWN_AND_LAST 0x000D
432 * Flags used by ext2fs_extent_insert()
434 #define EXT2_EXTENT_INSERT_AFTER 0x0001 /* insert after handle loc'n */
435 #define EXT2_EXTENT_INSERT_NOSPLIT 0x0002 /* insert may not cause split */
438 * Flags used by ext2fs_extent_delete()
440 #define EXT2_EXTENT_DELETE_KEEP_EMPTY 0x001 /* keep node if last extent gone */
443 * Flags used by ext2fs_extent_set_bmap()
445 #define EXT2_EXTENT_SET_BMAP_UNINIT 0x0001
448 * Data structure returned by ext2fs_extent_get_info()
450 struct ext2_extent_info {
460 __u32 max_uninit_len;
464 * Flags for directory block reading and writing functions
466 #define EXT2_DIRBLOCK_V2_STRUCT 0x0001
469 * Return flags for the directory iterator functions
471 #define DIRENT_CHANGED 1
472 #define DIRENT_ABORT 2
473 #define DIRENT_ERROR 3
476 * Directory iterator flags
479 #define DIRENT_FLAG_INCLUDE_EMPTY 1
480 #define DIRENT_FLAG_INCLUDE_REMOVED 2
481 #define DIRENT_FLAG_INCLUDE_CSUM 4
482 #define DIRENT_FLAG_INCLUDE_INLINE_DATA 8
484 #define DIRENT_DOT_FILE 1
485 #define DIRENT_DOT_DOT_FILE 2
486 #define DIRENT_OTHER_FILE 3
487 #define DIRENT_DELETED_FILE 4
488 #define DIRENT_CHECKSUM 5
491 * Inode scan definitions
493 typedef struct ext2_struct_inode_scan *ext2_inode_scan;
498 #define EXT2_SF_CHK_BADBLOCKS 0x0001
499 #define EXT2_SF_BAD_INODE_BLK 0x0002
500 #define EXT2_SF_BAD_EXTRA_BYTES 0x0004
501 #define EXT2_SF_SKIP_MISSING_ITABLE 0x0008
502 #define EXT2_SF_DO_LAZY 0x0010
503 #define EXT2_SF_WARN_GARBAGE_INODES 0x0020
506 * ext2fs_check_if_mounted flags
508 #define EXT2_MF_MOUNTED 1
509 #define EXT2_MF_ISROOT 2
510 #define EXT2_MF_READONLY 4
511 #define EXT2_MF_SWAP 8
512 #define EXT2_MF_BUSY 16
515 * Ext2/linux mode flags. We define them here so that we don't need
516 * to depend on the OS's sys/stat.h, since we may be compiling on a
519 #define LINUX_S_IFMT 00170000
520 #define LINUX_S_IFSOCK 0140000
521 #define LINUX_S_IFLNK 0120000
522 #define LINUX_S_IFREG 0100000
523 #define LINUX_S_IFBLK 0060000
524 #define LINUX_S_IFDIR 0040000
525 #define LINUX_S_IFCHR 0020000
526 #define LINUX_S_IFIFO 0010000
527 #define LINUX_S_ISUID 0004000
528 #define LINUX_S_ISGID 0002000
529 #define LINUX_S_ISVTX 0001000
531 #define LINUX_S_IRWXU 00700
532 #define LINUX_S_IRUSR 00400
533 #define LINUX_S_IWUSR 00200
534 #define LINUX_S_IXUSR 00100
536 #define LINUX_S_IRWXG 00070
537 #define LINUX_S_IRGRP 00040
538 #define LINUX_S_IWGRP 00020
539 #define LINUX_S_IXGRP 00010
541 #define LINUX_S_IRWXO 00007
542 #define LINUX_S_IROTH 00004
543 #define LINUX_S_IWOTH 00002
544 #define LINUX_S_IXOTH 00001
546 #define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK)
547 #define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG)
548 #define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR)
549 #define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR)
550 #define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK)
551 #define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO)
552 #define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK)
555 * ext2 size of an inode
557 #define EXT2_I_SIZE(i) ((i)->i_size | ((__u64) (i)->i_size_high << 32))
560 * ext2_icount_t abstraction
562 #define EXT2_ICOUNT_OPT_INCREMENT 0x01
563 #define EXT2_ICOUNT_OPT_FULLMAP 0x02
565 typedef struct ext2_icount *ext2_icount_t;
568 * Flags for ext2fs_bmap
570 #define BMAP_ALLOC 0x0001
571 #define BMAP_SET 0x0002
572 #define BMAP_UNINIT 0x0004
573 #define BMAP_ZERO 0x0008
576 * Returned flags from ext2fs_bmap
578 #define BMAP_RET_UNINIT 0x0001
581 * Flags for ext2fs_read_inode2
583 #define READ_INODE_NOCSUM 0x0001
586 * Flags for ext2fs_write_inode2
588 #define WRITE_INODE_NOCSUM 0x0001
591 * Flags for imager.c functions
593 #define IMAGER_FLAG_INODEMAP 1
594 #define IMAGER_FLAG_SPARSEWRITE 2
597 * For checking structure magic numbers...
600 #define EXT2_CHECK_MAGIC(struct, code) \
601 if ((struct)->magic != (code)) return (code)
604 * Features supported by this version of the library
606 #define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\
607 EXT2_FEATURE_COMPAT_IMAGIC_INODES|\
608 EXT3_FEATURE_COMPAT_HAS_JOURNAL|\
609 EXT2_FEATURE_COMPAT_RESIZE_INODE|\
610 EXT2_FEATURE_COMPAT_DIR_INDEX|\
611 EXT2_FEATURE_COMPAT_EXT_ATTR|\
612 EXT4_FEATURE_COMPAT_SPARSE_SUPER2)
615 #define EXT4_LIB_INCOMPAT_MMP EXT4_FEATURE_INCOMPAT_MMP
617 #define EXT4_LIB_INCOMPAT_MMP (0)
620 #define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\
621 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\
622 EXT2_FEATURE_INCOMPAT_META_BG|\
623 EXT3_FEATURE_INCOMPAT_RECOVER|\
624 EXT3_FEATURE_INCOMPAT_EXTENTS|\
625 EXT4_FEATURE_INCOMPAT_FLEX_BG|\
626 EXT4_FEATURE_INCOMPAT_EA_INODE|\
627 EXT4_LIB_INCOMPAT_MMP|\
628 EXT4_FEATURE_INCOMPAT_64BIT|\
629 EXT4_FEATURE_INCOMPAT_INLINE_DATA|\
630 EXT4_FEATURE_INCOMPAT_ENCRYPT|\
631 EXT4_FEATURE_INCOMPAT_CASEFOLD|\
632 EXT4_FEATURE_INCOMPAT_CSUM_SEED|\
633 EXT4_FEATURE_INCOMPAT_LARGEDIR)
635 #define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\
636 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|\
637 EXT2_FEATURE_RO_COMPAT_LARGE_FILE|\
638 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|\
639 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|\
640 EXT4_FEATURE_RO_COMPAT_GDT_CSUM|\
641 EXT4_FEATURE_RO_COMPAT_BIGALLOC|\
642 EXT4_FEATURE_RO_COMPAT_QUOTA|\
643 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM|\
644 EXT4_FEATURE_RO_COMPAT_READONLY |\
645 EXT4_FEATURE_RO_COMPAT_PROJECT |\
646 EXT4_FEATURE_RO_COMPAT_SHARED_BLOCKS |\
647 EXT4_FEATURE_RO_COMPAT_VERITY)
650 * These features are only allowed if EXT2_FLAG_SOFTSUPP_FEATURES is passed
653 #define EXT2_LIB_SOFTSUPP_INCOMPAT (0)
654 #define EXT2_LIB_SOFTSUPP_RO_COMPAT (EXT4_FEATURE_RO_COMPAT_REPLICA)
657 /* Translate a block number to a cluster number */
658 #define EXT2FS_CLUSTER_RATIO(fs) (1 << (fs)->cluster_ratio_bits)
659 #define EXT2FS_CLUSTER_MASK(fs) (EXT2FS_CLUSTER_RATIO(fs) - 1)
660 #define EXT2FS_B2C(fs, blk) ((blk) >> (fs)->cluster_ratio_bits)
661 /* Translate a cluster number to a block number */
662 #define EXT2FS_C2B(fs, cluster) ((cluster) << (fs)->cluster_ratio_bits)
663 /* Translate # of blks to # of clusters */
664 #define EXT2FS_NUM_B2C(fs, blks) (((blks) + EXT2FS_CLUSTER_MASK(fs)) >> \
665 (fs)->cluster_ratio_bits)
667 #if defined(HAVE_FSTAT64) && !defined(__OSX_AVAILABLE_BUT_DEPRECATED)
668 typedef struct stat64 ext2fs_struct_stat;
670 typedef struct stat ext2fs_struct_stat;
674 * For ext2fs_close2() and ext2fs_flush2(), this flag allows you to
675 * avoid the fsync call.
677 #define EXT2_FLAG_FLUSH_NO_SYNC 1
680 * Modify and iterate extended attributes
682 struct ext2_xattr_handle;
683 #define XATTR_ABORT 1
684 #define XATTR_CHANGED 2
687 * function prototypes
689 static inline int ext2fs_has_group_desc_csum(ext2_filsys fs)
691 return ext2fs_has_feature_metadata_csum(fs->super) ||
692 ext2fs_has_feature_gdt_csum(fs->super);
695 /* The LARGE_FILE feature should be set if we have stored files 2GB+ in size */
696 static inline int ext2fs_needs_large_file_feature(unsigned long long file_size)
698 return file_size >= 0x80000000ULL;
702 extern void ext2fs_clear_block_uninit(ext2_filsys fs, dgrp_t group);
703 extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode,
704 ext2fs_inode_bitmap map, ext2_ino_t *ret);
705 extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal,
706 ext2fs_block_bitmap map, blk_t *ret);
707 extern errcode_t ext2fs_new_block2(ext2_filsys fs, blk64_t goal,
708 ext2fs_block_bitmap map, blk64_t *ret);
709 extern errcode_t ext2fs_new_block3(ext2_filsys fs, blk64_t goal,
710 ext2fs_block_bitmap map, blk64_t *ret,
711 struct blk_alloc_ctx *ctx);
712 extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start,
713 blk_t finish, int num,
714 ext2fs_block_bitmap map,
716 extern errcode_t ext2fs_get_free_blocks2(ext2_filsys fs, blk64_t start,
717 blk64_t finish, int num,
718 ext2fs_block_bitmap map,
720 extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal,
721 char *block_buf, blk_t *ret);
722 extern errcode_t ext2fs_alloc_block2(ext2_filsys fs, blk64_t goal,
723 char *block_buf, blk64_t *ret);
724 extern errcode_t ext2fs_alloc_block3(ext2_filsys fs, blk64_t goal,
725 char *block_buf, blk64_t *ret,
726 struct blk_alloc_ctx *ctx);
728 extern void ext2fs_set_alloc_block_callback(ext2_filsys fs,
729 errcode_t (*func)(ext2_filsys fs,
732 errcode_t (**old)(ext2_filsys fs,
735 blk64_t ext2fs_find_inode_goal(ext2_filsys fs, ext2_ino_t ino,
736 struct ext2_inode *inode, blk64_t lblk);
737 extern void ext2fs_set_new_range_callback(ext2_filsys fs,
738 errcode_t (*func)(ext2_filsys fs, int flags, blk64_t goal,
739 blk64_t len, blk64_t *pblk, blk64_t *plen),
740 errcode_t (**old)(ext2_filsys fs, int flags, blk64_t goal,
741 blk64_t len, blk64_t *pblk, blk64_t *plen));
742 extern void ext2fs_set_block_alloc_stats_range_callback(ext2_filsys fs,
743 void (*func)(ext2_filsys fs, blk64_t blk,
744 blk_t num, int inuse),
745 void (**old)(ext2_filsys fs, blk64_t blk,
746 blk_t num, int inuse));
747 #define EXT2_NEWRANGE_FIXED_GOAL (0x1)
748 #define EXT2_NEWRANGE_MIN_LENGTH (0x2)
749 #define EXT2_NEWRANGE_ALL_FLAGS (0x3)
750 errcode_t ext2fs_new_range(ext2_filsys fs, int flags, blk64_t goal,
751 blk64_t len, ext2fs_block_bitmap map, blk64_t *pblk,
753 #define EXT2_ALLOCRANGE_FIXED_GOAL (0x1)
754 #define EXT2_ALLOCRANGE_ZERO_BLOCKS (0x2)
755 #define EXT2_ALLOCRANGE_ALL_FLAGS (0x3)
756 errcode_t ext2fs_alloc_range(ext2_filsys fs, int flags, blk64_t goal,
757 blk_t len, blk64_t *ret);
760 extern int ext2fs_reserve_super_and_bgd(ext2_filsys fs,
762 ext2fs_block_bitmap bmap);
763 extern void ext2fs_set_block_alloc_stats_callback(ext2_filsys fs,
764 void (*func)(ext2_filsys fs,
767 void (**old)(ext2_filsys fs,
772 void ext2fs_inode_alloc_stats(ext2_filsys fs, ext2_ino_t ino, int inuse);
773 void ext2fs_inode_alloc_stats2(ext2_filsys fs, ext2_ino_t ino,
774 int inuse, int isdir);
775 void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse);
776 void ext2fs_block_alloc_stats2(ext2_filsys fs, blk64_t blk, int inuse);
777 void ext2fs_block_alloc_stats_range(ext2_filsys fs, blk64_t blk,
778 blk_t num, int inuse);
781 extern errcode_t ext2fs_allocate_tables(ext2_filsys fs);
782 extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group,
783 ext2fs_block_bitmap bmap);
786 extern errcode_t ext2fs_u32_list_create(ext2_u32_list *ret, int size);
787 extern errcode_t ext2fs_u32_list_add(ext2_u32_list bb, __u32 blk);
788 extern int ext2fs_u32_list_find(ext2_u32_list bb, __u32 blk);
789 extern int ext2fs_u32_list_test(ext2_u32_list bb, blk_t blk);
790 extern errcode_t ext2fs_u32_list_iterate_begin(ext2_u32_list bb,
791 ext2_u32_iterate *ret);
792 extern int ext2fs_u32_list_iterate(ext2_u32_iterate iter, blk_t *blk);
793 extern void ext2fs_u32_list_iterate_end(ext2_u32_iterate iter);
794 extern errcode_t ext2fs_u32_copy(ext2_u32_list src, ext2_u32_list *dest);
795 extern int ext2fs_u32_list_equal(ext2_u32_list bb1, ext2_u32_list bb2);
797 extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret,
799 extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb,
801 extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb,
803 extern int ext2fs_u32_list_del(ext2_u32_list bb, __u32 blk);
804 extern void ext2fs_badblocks_list_del(ext2_u32_list bb, __u32 blk);
806 ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb,
807 ext2_badblocks_iterate *ret);
808 extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter,
810 extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter);
811 extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src,
812 ext2_badblocks_list *dest);
813 extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1,
814 ext2_badblocks_list bb2);
815 extern int ext2fs_u32_list_count(ext2_u32_list bb);
818 extern errcode_t badblocks_list_create(badblocks_list *ret, int size);
819 extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk);
820 extern int badblocks_list_test(badblocks_list bb, blk_t blk);
821 extern errcode_t badblocks_list_iterate_begin(badblocks_list bb,
822 badblocks_iterate *ret);
823 extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk);
824 extern void badblocks_list_iterate_end(badblocks_iterate iter);
825 extern void badblocks_list_free(badblocks_list bb);
828 extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs,
829 ext2_badblocks_list bb_list);
832 extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap);
833 extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap);
834 extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src,
835 ext2fs_generic_bitmap *dest);
836 extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs);
837 extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs);
838 extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs);
839 extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs);
840 extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs,
842 ext2fs_block_bitmap *ret);
843 extern errcode_t ext2fs_allocate_subcluster_bitmap(ext2_filsys fs,
845 ext2fs_block_bitmap *ret);
846 extern int ext2fs_get_bitmap_granularity(ext2fs_block_bitmap bitmap);
847 extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs,
849 ext2fs_inode_bitmap *ret);
850 extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap,
851 ext2_ino_t end, ext2_ino_t *oend);
852 extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap,
853 blk_t end, blk_t *oend);
854 extern errcode_t ext2fs_fudge_block_bitmap_end2(ext2fs_block_bitmap bitmap,
855 blk64_t end, blk64_t *oend);
856 extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap);
857 extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap);
858 extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs);
859 extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs);
860 extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end,
861 ext2fs_inode_bitmap bmap);
862 extern errcode_t ext2fs_resize_inode_bitmap2(__u64 new_end,
864 ext2fs_inode_bitmap bmap);
865 extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end,
866 ext2fs_block_bitmap bmap);
867 extern errcode_t ext2fs_resize_block_bitmap2(__u64 new_end,
869 ext2fs_block_bitmap bmap);
870 extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1,
871 ext2fs_block_bitmap bm2);
872 extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1,
873 ext2fs_inode_bitmap bm2);
874 extern errcode_t ext2fs_set_inode_bitmap_range(ext2fs_inode_bitmap bmap,
875 ext2_ino_t start, unsigned int num,
877 extern errcode_t ext2fs_set_inode_bitmap_range2(ext2fs_inode_bitmap bmap,
878 __u64 start, size_t num,
880 extern errcode_t ext2fs_get_inode_bitmap_range(ext2fs_inode_bitmap bmap,
881 ext2_ino_t start, unsigned int num,
883 extern errcode_t ext2fs_get_inode_bitmap_range2(ext2fs_inode_bitmap bmap,
884 __u64 start, size_t num,
886 extern errcode_t ext2fs_set_block_bitmap_range(ext2fs_block_bitmap bmap,
887 blk_t start, unsigned int num,
889 extern errcode_t ext2fs_set_block_bitmap_range2(ext2fs_block_bitmap bmap,
890 blk64_t start, size_t num,
892 extern errcode_t ext2fs_get_block_bitmap_range(ext2fs_block_bitmap bmap,
893 blk_t start, unsigned int num,
895 extern errcode_t ext2fs_get_block_bitmap_range2(ext2fs_block_bitmap bmap,
896 blk64_t start, size_t num,
900 extern __u32 ext2fs_inode_bitmap_checksum(ext2_filsys fs, dgrp_t group);
901 extern __u32 ext2fs_block_bitmap_checksum(ext2_filsys fs, dgrp_t group);
902 extern dgrp_t ext2fs_group_of_blk2(ext2_filsys fs, blk64_t);
903 extern blk64_t ext2fs_group_first_block2(ext2_filsys fs, dgrp_t group);
904 extern blk64_t ext2fs_group_last_block2(ext2_filsys fs, dgrp_t group);
905 extern int ext2fs_group_blocks_count(ext2_filsys fs, dgrp_t group);
906 extern blk64_t ext2fs_inode_data_blocks2(ext2_filsys fs,
907 struct ext2_inode *inode);
908 extern blk64_t ext2fs_inode_i_blocks(ext2_filsys fs,
909 struct ext2_inode *inode);
910 extern blk64_t ext2fs_blocks_count(struct ext2_super_block *super);
911 extern void ext2fs_blocks_count_set(struct ext2_super_block *super,
913 extern void ext2fs_blocks_count_add(struct ext2_super_block *super,
915 extern blk64_t ext2fs_r_blocks_count(struct ext2_super_block *super);
916 extern void ext2fs_r_blocks_count_set(struct ext2_super_block *super,
918 extern void ext2fs_r_blocks_count_add(struct ext2_super_block *super,
920 extern blk64_t ext2fs_free_blocks_count(struct ext2_super_block *super);
921 extern void ext2fs_free_blocks_count_set(struct ext2_super_block *super,
923 extern void ext2fs_free_blocks_count_add(struct ext2_super_block *super,
925 /* Block group descriptor accessor functions */
926 extern struct ext2_group_desc *ext2fs_group_desc(ext2_filsys fs,
927 struct opaque_ext2_group_desc *gdp,
929 extern blk64_t ext2fs_block_bitmap_csum(ext2_filsys fs, dgrp_t group);
930 extern blk64_t ext2fs_block_bitmap_loc(ext2_filsys fs, dgrp_t group);
931 extern void ext2fs_block_bitmap_loc_set(ext2_filsys fs, dgrp_t group,
933 extern __u32 ext2fs_inode_bitmap_csum(ext2_filsys fs, dgrp_t group);
934 extern blk64_t ext2fs_inode_bitmap_loc(ext2_filsys fs, dgrp_t group);
935 extern void ext2fs_inode_bitmap_loc_set(ext2_filsys fs, dgrp_t group,
937 extern blk64_t ext2fs_inode_table_loc(ext2_filsys fs, dgrp_t group);
938 extern void ext2fs_inode_table_loc_set(ext2_filsys fs, dgrp_t group,
940 extern __u32 ext2fs_bg_free_blocks_count(ext2_filsys fs, dgrp_t group);
941 extern void ext2fs_bg_free_blocks_count_set(ext2_filsys fs, dgrp_t group,
943 extern __u32 ext2fs_bg_free_inodes_count(ext2_filsys fs, dgrp_t group);
944 extern void ext2fs_bg_free_inodes_count_set(ext2_filsys fs, dgrp_t group,
946 extern __u32 ext2fs_bg_used_dirs_count(ext2_filsys fs, dgrp_t group);
947 extern void ext2fs_bg_used_dirs_count_set(ext2_filsys fs, dgrp_t group,
949 extern __u32 ext2fs_bg_itable_unused(ext2_filsys fs, dgrp_t group);
950 extern void ext2fs_bg_itable_unused_set(ext2_filsys fs, dgrp_t group,
952 extern __u16 ext2fs_bg_flags(ext2_filsys fs, dgrp_t group);
953 extern void ext2fs_bg_flags_zap(ext2_filsys fs, dgrp_t group);
954 extern int ext2fs_bg_flags_test(ext2_filsys fs, dgrp_t group, __u16 bg_flag);
955 extern void ext2fs_bg_flags_set(ext2_filsys fs, dgrp_t group, __u16 bg_flags);
956 extern void ext2fs_bg_flags_clear(ext2_filsys fs, dgrp_t group, __u16 bg_flags);
957 extern __u16 ext2fs_bg_checksum(ext2_filsys fs, dgrp_t group);
958 extern void ext2fs_bg_checksum_set(ext2_filsys fs, dgrp_t group, __u16 checksum);
959 extern blk64_t ext2fs_file_acl_block(ext2_filsys fs,
960 const struct ext2_inode *inode);
961 extern void ext2fs_file_acl_block_set(ext2_filsys fs,
962 struct ext2_inode *inode, blk64_t blk);
963 extern errcode_t ext2fs_inode_size_set(ext2_filsys fs, struct ext2_inode *inode,
967 extern errcode_t ext2fs_block_iterate(ext2_filsys fs,
971 int (*func)(ext2_filsys fs,
976 errcode_t ext2fs_block_iterate2(ext2_filsys fs,
980 int (*func)(ext2_filsys fs,
982 e2_blkcnt_t blockcnt,
987 errcode_t ext2fs_block_iterate3(ext2_filsys fs,
991 int (*func)(ext2_filsys fs,
993 e2_blkcnt_t blockcnt,
1000 extern errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino,
1001 struct ext2_inode *inode,
1002 char *block_buf, int bmap_flags,
1003 blk_t block, blk_t *phys_blk);
1004 extern errcode_t ext2fs_bmap2(ext2_filsys fs, ext2_ino_t ino,
1005 struct ext2_inode *inode,
1006 char *block_buf, int bmap_flags, blk64_t block,
1007 int *ret_flags, blk64_t *phys_blk);
1008 errcode_t ext2fs_map_cluster_block(ext2_filsys fs, ext2_ino_t ino,
1009 struct ext2_inode *inode, blk64_t lblk,
1014 extern errcode_t ext2fs_move_blocks(ext2_filsys fs,
1015 ext2fs_block_bitmap reserve,
1016 ext2fs_block_bitmap alloc_map,
1021 extern errcode_t ext2fs_check_desc(ext2_filsys fs);
1024 extern errcode_t ext2fs_close(ext2_filsys fs);
1025 extern errcode_t ext2fs_close2(ext2_filsys fs, int flags);
1026 extern errcode_t ext2fs_close_free(ext2_filsys *fs);
1027 extern errcode_t ext2fs_flush(ext2_filsys fs);
1028 extern errcode_t ext2fs_flush2(ext2_filsys fs, int flags);
1029 extern int ext2fs_bg_has_super(ext2_filsys fs, dgrp_t group_block);
1030 extern errcode_t ext2fs_super_and_bgd_loc2(ext2_filsys fs,
1032 blk64_t *ret_super_blk,
1033 blk64_t *ret_old_desc_blk,
1034 blk64_t *ret_new_desc_blk,
1035 blk_t *ret_used_blks);
1036 extern int ext2fs_super_and_bgd_loc(ext2_filsys fs,
1038 blk_t *ret_super_blk,
1039 blk_t *ret_old_desc_blk,
1040 blk_t *ret_new_desc_blk,
1042 extern void ext2fs_update_dynamic_rev(ext2_filsys fs);
1045 extern __u32 ext2fs_crc32_be(__u32 crc, unsigned char const *p, size_t len);
1046 extern __u32 ext2fs_crc32c_le(__u32 crc, unsigned char const *p, size_t len);
1049 extern void ext2fs_init_csum_seed(ext2_filsys fs);
1050 extern errcode_t ext2fs_mmp_csum_set(ext2_filsys fs, struct mmp_struct *mmp);
1051 extern int ext2fs_mmp_csum_verify(ext2_filsys, struct mmp_struct *mmp);
1052 extern int ext2fs_verify_csum_type(ext2_filsys fs, struct ext2_super_block *sb);
1053 extern errcode_t ext2fs_superblock_csum_set(ext2_filsys fs,
1054 struct ext2_super_block *sb);
1055 extern int ext2fs_superblock_csum_verify(ext2_filsys fs,
1056 struct ext2_super_block *sb);
1057 extern errcode_t ext2fs_ext_attr_block_csum_set(ext2_filsys fs,
1058 ext2_ino_t inum, blk64_t block,
1059 struct ext2_ext_attr_header *hdr);
1060 extern int ext2fs_ext_attr_block_csum_verify(ext2_filsys fs, ext2_ino_t inum,
1062 struct ext2_ext_attr_header *hdr);
1063 #define EXT2_DIRENT_TAIL(block, blocksize) \
1064 ((struct ext2_dir_entry_tail *)(((char *)(block)) + \
1065 (blocksize) - sizeof(struct ext2_dir_entry_tail)))
1067 extern void ext2fs_initialize_dirent_tail(ext2_filsys fs,
1068 struct ext2_dir_entry_tail *t);
1069 extern int ext2fs_dirent_has_tail(ext2_filsys fs,
1070 struct ext2_dir_entry *dirent);
1071 extern int ext2fs_dirent_csum_verify(ext2_filsys fs, ext2_ino_t inum,
1072 struct ext2_dir_entry *dirent);
1073 extern int ext2fs_dir_block_csum_verify(ext2_filsys fs, ext2_ino_t inum,
1074 struct ext2_dir_entry *dirent);
1075 extern errcode_t ext2fs_dir_block_csum_set(ext2_filsys fs, ext2_ino_t inum,
1076 struct ext2_dir_entry *dirent);
1077 extern errcode_t ext2fs_get_dx_countlimit(ext2_filsys fs,
1078 struct ext2_dir_entry *dirent,
1079 struct ext2_dx_countlimit **cc,
1081 extern errcode_t ext2fs_extent_block_csum_set(ext2_filsys fs,
1083 struct ext3_extent_header *eh);
1084 extern int ext2fs_extent_block_csum_verify(ext2_filsys fs,
1086 struct ext3_extent_header *eh);
1087 extern errcode_t ext2fs_block_bitmap_csum_set(ext2_filsys fs, dgrp_t group,
1088 char *bitmap, int size);
1089 extern int ext2fs_block_bitmap_csum_verify(ext2_filsys fs, dgrp_t group,
1090 char *bitmap, int size);
1091 extern errcode_t ext2fs_inode_bitmap_csum_set(ext2_filsys fs, dgrp_t group,
1092 char *bitmap, int size);
1093 extern int ext2fs_inode_bitmap_csum_verify(ext2_filsys fs, dgrp_t group,
1094 char *bitmap, int size);
1095 extern errcode_t ext2fs_inode_csum_set(ext2_filsys fs, ext2_ino_t inum,
1096 struct ext2_inode_large *inode);
1097 extern int ext2fs_inode_csum_verify(ext2_filsys fs, ext2_ino_t inum,
1098 struct ext2_inode_large *inode);
1099 extern void ext2fs_group_desc_csum_set(ext2_filsys fs, dgrp_t group);
1100 extern int ext2fs_group_desc_csum_verify(ext2_filsys fs, dgrp_t group);
1101 extern errcode_t ext2fs_set_gdt_csum(ext2_filsys fs);
1102 extern __u16 ext2fs_group_desc_csum(ext2_filsys fs, dgrp_t group);
1105 extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist);
1106 extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ext2_ino_t ino,
1107 blk_t blk, int blockcnt);
1108 extern errcode_t ext2fs_add_dir_block2(ext2_dblist dblist, ext2_ino_t ino,
1109 blk64_t blk, e2_blkcnt_t blockcnt);
1110 extern void ext2fs_dblist_sort(ext2_dblist dblist,
1111 EXT2_QSORT_TYPE (*sortfunc)(const void *,
1113 extern void ext2fs_dblist_sort2(ext2_dblist dblist,
1114 EXT2_QSORT_TYPE (*sortfunc)(const void *,
1116 extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist,
1117 int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info,
1120 extern errcode_t ext2fs_dblist_iterate2(ext2_dblist dblist,
1121 int (*func)(ext2_filsys fs, struct ext2_db_entry2 *db_info,
1124 extern errcode_t ext2fs_dblist_iterate3(ext2_dblist dblist,
1125 int (*func)(ext2_filsys fs, struct ext2_db_entry2 *db_info,
1127 unsigned long long start,
1128 unsigned long long count,
1130 extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ext2_ino_t ino,
1131 blk_t blk, int blockcnt);
1132 extern errcode_t ext2fs_set_dir_block2(ext2_dblist dblist, ext2_ino_t ino,
1133 blk64_t blk, e2_blkcnt_t blockcnt);
1134 extern errcode_t ext2fs_copy_dblist(ext2_dblist src,
1136 extern int ext2fs_dblist_count(ext2_dblist dblist);
1137 extern blk64_t ext2fs_dblist_count2(ext2_dblist dblist);
1138 extern errcode_t ext2fs_dblist_get_last(ext2_dblist dblist,
1139 struct ext2_db_entry **entry);
1140 extern errcode_t ext2fs_dblist_get_last2(ext2_dblist dblist,
1141 struct ext2_db_entry2 **entry);
1142 extern errcode_t ext2fs_dblist_drop_last(ext2_dblist dblist);
1146 ext2fs_dblist_dir_iterate(ext2_dblist dblist,
1149 int (*func)(ext2_ino_t dir,
1151 struct ext2_dir_entry *dirent,
1159 /* digest_encode.c */
1160 #define EXT2FS_DIGEST_SIZE EXT2FS_SHA256_LENGTH
1161 extern int ext2fs_digest_encode(const char *src, int len, char *dst);
1162 extern int ext2fs_digest_decode(const char *src, int len, char *dst);
1166 extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block,
1168 extern errcode_t ext2fs_read_dir_block2(ext2_filsys fs, blk_t block,
1169 void *buf, int flags);
1170 extern errcode_t ext2fs_read_dir_block3(ext2_filsys fs, blk64_t block,
1171 void *buf, int flags);
1172 extern errcode_t ext2fs_read_dir_block4(ext2_filsys fs, blk64_t block,
1173 void *buf, int flags, ext2_ino_t ino);
1174 extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block,
1176 extern errcode_t ext2fs_write_dir_block2(ext2_filsys fs, blk_t block,
1177 void *buf, int flags);
1178 extern errcode_t ext2fs_write_dir_block3(ext2_filsys fs, blk64_t block,
1179 void *buf, int flags);
1180 extern errcode_t ext2fs_write_dir_block4(ext2_filsys fs, blk64_t block,
1181 void *buf, int flags, ext2_ino_t ino);
1184 extern errcode_t ext2fs_dirhash(int version, const char *name, int len,
1186 ext2_dirhash_t *ret_hash,
1187 ext2_dirhash_t *ret_minor_hash);
1189 extern errcode_t ext2fs_dirhash2(int version, const char *name, int len,
1190 const struct ext2fs_nls_table *charset,
1193 ext2_dirhash_t *ret_hash,
1194 ext2_dirhash_t *ret_minor_hash);
1197 extern errcode_t ext2fs_get_rec_len(ext2_filsys fs,
1198 struct ext2_dir_entry *dirent,
1199 unsigned int *rec_len);
1200 extern errcode_t ext2fs_set_rec_len(ext2_filsys fs,
1202 struct ext2_dir_entry *dirent);
1203 extern errcode_t ext2fs_dir_iterate(ext2_filsys fs,
1207 int (*func)(struct ext2_dir_entry *dirent,
1213 extern errcode_t ext2fs_dir_iterate2(ext2_filsys fs,
1217 int (*func)(ext2_ino_t dir,
1219 struct ext2_dir_entry *dirent,
1227 extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest);
1230 extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir);
1233 extern __u32 ext2fs_ext_attr_hash_entry(struct ext2_ext_attr_entry *entry,
1235 extern errcode_t ext2fs_ext_attr_hash_entry2(ext2_filsys fs,
1236 struct ext2_ext_attr_entry *entry,
1237 void *data, __u32 *hash);
1238 extern errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf);
1239 extern errcode_t ext2fs_read_ext_attr2(ext2_filsys fs, blk64_t block,
1241 extern errcode_t ext2fs_read_ext_attr3(ext2_filsys fs, blk64_t block,
1242 void *buf, ext2_ino_t inum);
1243 extern errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block,
1245 extern errcode_t ext2fs_write_ext_attr2(ext2_filsys fs, blk64_t block,
1247 extern errcode_t ext2fs_write_ext_attr3(ext2_filsys fs, blk64_t block,
1248 void *buf, ext2_ino_t inum);
1249 extern errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk,
1251 int adjust, __u32 *newcount);
1252 extern errcode_t ext2fs_adjust_ea_refcount2(ext2_filsys fs, blk64_t blk,
1254 int adjust, __u32 *newcount);
1255 extern errcode_t ext2fs_adjust_ea_refcount3(ext2_filsys fs, blk64_t blk,
1257 int adjust, __u32 *newcount,
1259 errcode_t ext2fs_xattrs_write(struct ext2_xattr_handle *handle);
1260 errcode_t ext2fs_xattrs_read(struct ext2_xattr_handle *handle);
1261 errcode_t ext2fs_xattrs_iterate(struct ext2_xattr_handle *h,
1262 int (*func)(char *name, char *value,
1263 size_t value_len, void *data),
1265 errcode_t ext2fs_xattr_get(struct ext2_xattr_handle *h, const char *key,
1266 void **value, size_t *value_len);
1267 errcode_t ext2fs_xattr_set(struct ext2_xattr_handle *handle,
1271 errcode_t ext2fs_xattr_remove(struct ext2_xattr_handle *handle,
1273 errcode_t ext2fs_xattrs_open(ext2_filsys fs, ext2_ino_t ino,
1274 struct ext2_xattr_handle **handle);
1275 errcode_t ext2fs_xattrs_close(struct ext2_xattr_handle **handle);
1276 errcode_t ext2fs_free_ext_attr(ext2_filsys fs, ext2_ino_t ino,
1277 struct ext2_inode_large *inode);
1278 errcode_t ext2fs_xattrs_count(struct ext2_xattr_handle *handle, size_t *count);
1279 errcode_t ext2fs_xattr_inode_max_size(ext2_filsys fs, ext2_ino_t ino,
1281 #define XATTR_HANDLE_FLAG_RAW 0x0001
1282 errcode_t ext2fs_xattrs_flags(struct ext2_xattr_handle *handle,
1283 unsigned int *new_flags, unsigned int *old_flags);
1284 extern void ext2fs_ext_attr_block_rehash(struct ext2_ext_attr_header *header,
1285 struct ext2_ext_attr_entry *end);
1286 extern __u32 ext2fs_get_ea_inode_hash(struct ext2_inode *inode);
1287 extern void ext2fs_set_ea_inode_hash(struct ext2_inode *inode, __u32 hash);
1288 extern __u64 ext2fs_get_ea_inode_ref(struct ext2_inode *inode);
1289 extern void ext2fs_set_ea_inode_ref(struct ext2_inode *inode, __u64 ref_count);
1292 extern errcode_t ext2fs_extent_header_verify(void *ptr, int size);
1293 extern errcode_t ext2fs_extent_open(ext2_filsys fs, ext2_ino_t ino,
1294 ext2_extent_handle_t *handle);
1295 extern errcode_t ext2fs_extent_open2(ext2_filsys fs, ext2_ino_t ino,
1296 struct ext2_inode *inode,
1297 ext2_extent_handle_t *ret_handle);
1298 extern void ext2fs_extent_free(ext2_extent_handle_t handle);
1299 extern errcode_t ext2fs_extent_get(ext2_extent_handle_t handle,
1300 int flags, struct ext2fs_extent *extent);
1301 extern errcode_t ext2fs_extent_node_split(ext2_extent_handle_t handle);
1302 extern errcode_t ext2fs_extent_replace(ext2_extent_handle_t handle, int flags,
1303 struct ext2fs_extent *extent);
1304 extern errcode_t ext2fs_extent_insert(ext2_extent_handle_t handle, int flags,
1305 struct ext2fs_extent *extent);
1306 extern errcode_t ext2fs_extent_set_bmap(ext2_extent_handle_t handle,
1307 blk64_t logical, blk64_t physical,
1309 extern errcode_t ext2fs_extent_delete(ext2_extent_handle_t handle, int flags);
1310 extern errcode_t ext2fs_extent_get_info(ext2_extent_handle_t handle,
1311 struct ext2_extent_info *info);
1312 extern errcode_t ext2fs_extent_goto(ext2_extent_handle_t handle,
1314 extern errcode_t ext2fs_extent_goto2(ext2_extent_handle_t handle,
1315 int leaf_level, blk64_t blk);
1316 extern errcode_t ext2fs_extent_fix_parents(ext2_extent_handle_t handle);
1317 extern size_t ext2fs_max_extent_depth(ext2_extent_handle_t handle);
1318 extern errcode_t ext2fs_fix_extents_checksums(ext2_filsys fs, ext2_ino_t ino,
1319 struct ext2_inode *inode);
1322 #define EXT2_FALLOCATE_ZERO_BLOCKS (0x1)
1323 #define EXT2_FALLOCATE_FORCE_INIT (0x2)
1324 #define EXT2_FALLOCATE_FORCE_UNINIT (0x4)
1325 #define EXT2_FALLOCATE_INIT_BEYOND_EOF (0x8)
1326 #define EXT2_FALLOCATE_ALL_FLAGS (0xF)
1327 errcode_t ext2fs_fallocate(ext2_filsys fs, int flags, ext2_ino_t ino,
1328 struct ext2_inode *inode, blk64_t goal,
1329 blk64_t start, blk64_t len);
1332 extern errcode_t ext2fs_file_open2(ext2_filsys fs, ext2_ino_t ino,
1333 struct ext2_inode *inode,
1334 int flags, ext2_file_t *ret);
1335 extern errcode_t ext2fs_file_open(ext2_filsys fs, ext2_ino_t ino,
1336 int flags, ext2_file_t *ret);
1337 extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file);
1338 struct ext2_inode *ext2fs_file_get_inode(ext2_file_t file);
1339 extern ext2_ino_t ext2fs_file_get_inode_num(ext2_file_t file);
1340 extern errcode_t ext2fs_file_close(ext2_file_t file);
1341 extern errcode_t ext2fs_file_flush(ext2_file_t file);
1342 extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf,
1343 unsigned int wanted, unsigned int *got);
1344 extern errcode_t ext2fs_file_write(ext2_file_t file, const void *buf,
1345 unsigned int nbytes, unsigned int *written);
1346 extern errcode_t ext2fs_file_llseek(ext2_file_t file, __u64 offset,
1347 int whence, __u64 *ret_pos);
1348 extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset,
1349 int whence, ext2_off_t *ret_pos);
1350 errcode_t ext2fs_file_get_lsize(ext2_file_t file, __u64 *ret_size);
1351 extern ext2_off_t ext2fs_file_get_size(ext2_file_t file);
1352 extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size);
1353 extern errcode_t ext2fs_file_set_size2(ext2_file_t file, ext2_off64_t size);
1356 extern char *ext2fs_find_block_device(dev_t device);
1359 extern errcode_t ext2fs_sync_device(int fd, int flushb);
1362 extern void ext2fs_free(ext2_filsys fs);
1363 extern void ext2fs_free_dblist(ext2_dblist dblist);
1364 extern void ext2fs_badblocks_list_free(ext2_badblocks_list bb);
1365 extern void ext2fs_u32_list_free(ext2_u32_list bb);
1368 extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap);
1369 extern errcode_t ext2fs_make_generic_bitmap(errcode_t magic, ext2_filsys fs,
1370 __u32 start, __u32 end,
1372 const char *descr, char *init_map,
1373 ext2fs_generic_bitmap *ret);
1374 extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start,
1378 ext2fs_generic_bitmap *ret);
1379 extern errcode_t ext2fs_copy_generic_bitmap(ext2fs_generic_bitmap src,
1380 ext2fs_generic_bitmap *dest);
1381 extern void ext2fs_clear_generic_bitmap(ext2fs_generic_bitmap bitmap);
1382 extern errcode_t ext2fs_fudge_generic_bitmap_end(ext2fs_inode_bitmap bitmap,
1387 extern void ext2fs_set_generic_bitmap_padding(ext2fs_generic_bitmap map);
1388 extern errcode_t ext2fs_resize_generic_bitmap(errcode_t magic,
1391 ext2fs_generic_bitmap bmap);
1392 extern errcode_t ext2fs_compare_generic_bitmap(errcode_t magic, errcode_t neq,
1393 ext2fs_generic_bitmap bm1,
1394 ext2fs_generic_bitmap bm2);
1395 extern errcode_t ext2fs_get_generic_bitmap_range(ext2fs_generic_bitmap bmap,
1397 __u32 start, __u32 num,
1399 extern errcode_t ext2fs_set_generic_bitmap_range(ext2fs_generic_bitmap bmap,
1401 __u32 start, __u32 num,
1403 extern errcode_t ext2fs_find_first_zero_generic_bitmap(ext2fs_generic_bitmap bitmap,
1404 __u32 start, __u32 end,
1406 extern errcode_t ext2fs_find_first_set_generic_bitmap(ext2fs_generic_bitmap bitmap,
1407 __u32 start, __u32 end,
1410 /* gen_bitmap64.c */
1411 void ext2fs_free_generic_bmap(ext2fs_generic_bitmap bmap);
1412 errcode_t ext2fs_alloc_generic_bmap(ext2_filsys fs, errcode_t magic,
1413 int type, __u64 start, __u64 end,
1416 ext2fs_generic_bitmap *ret);
1417 errcode_t ext2fs_copy_generic_bmap(ext2fs_generic_bitmap src,
1418 ext2fs_generic_bitmap *dest);
1419 void ext2fs_clear_generic_bmap(ext2fs_generic_bitmap bitmap);
1420 errcode_t ext2fs_fudge_generic_bmap_end(ext2fs_generic_bitmap bitmap,
1422 __u64 end, __u64 *oend);
1423 void ext2fs_set_generic_bmap_padding(ext2fs_generic_bitmap bmap);
1424 errcode_t ext2fs_resize_generic_bmap(ext2fs_generic_bitmap bmap,
1426 __u64 new_real_end);
1427 errcode_t ext2fs_compare_generic_bmap(errcode_t neq,
1428 ext2fs_generic_bitmap bm1,
1429 ext2fs_generic_bitmap bm2);
1430 errcode_t ext2fs_get_generic_bmap_range(ext2fs_generic_bitmap bmap,
1431 __u64 start, unsigned int num,
1433 errcode_t ext2fs_set_generic_bmap_range(ext2fs_generic_bitmap bmap,
1434 __u64 start, unsigned int num,
1436 errcode_t ext2fs_convert_subcluster_bitmap(ext2_filsys fs,
1437 ext2fs_block_bitmap *bitmap);
1439 /* get_num_dirs.c */
1440 extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs);
1443 extern errcode_t ext2fs_get_device_size(const char *file, int blocksize,
1445 extern errcode_t ext2fs_get_device_size2(const char *file, int blocksize,
1446 blk64_t *retblocks);
1449 extern int ext2fs_get_dio_alignment(int fd);
1450 errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize);
1451 errcode_t ext2fs_get_device_phys_sectsize(const char *file, int *sectsize);
1454 errcode_t ext2fs_iblk_add_blocks(ext2_filsys fs, struct ext2_inode *inode,
1455 blk64_t num_blocks);
1456 errcode_t ext2fs_iblk_sub_blocks(ext2_filsys fs, struct ext2_inode *inode,
1457 blk64_t num_blocks);
1458 errcode_t ext2fs_iblk_set(ext2_filsys fs, struct ext2_inode *inode, blk64_t b);
1461 extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags);
1462 extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags);
1463 extern errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd, int flags);
1464 extern errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd, int flags);
1465 extern errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags);
1466 extern errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags);
1469 errcode_t ext2fs_read_ind_block(ext2_filsys fs, blk_t blk, void *buf);
1470 errcode_t ext2fs_write_ind_block(ext2_filsys fs, blk_t blk, void *buf);
1473 extern errcode_t ext2fs_initialize(const char *name, int flags,
1474 struct ext2_super_block *param,
1475 io_manager manager, ext2_filsys *ret_fs);
1478 extern void ext2fs_free_icount(ext2_icount_t icount);
1479 extern errcode_t ext2fs_create_icount_tdb(ext2_filsys fs, char *tdb_dir,
1480 int flags, ext2_icount_t *ret);
1481 extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags,
1483 ext2_icount_t hint, ext2_icount_t *ret);
1484 extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags,
1486 ext2_icount_t *ret);
1487 extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ext2_ino_t ino,
1489 extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ext2_ino_t ino,
1491 extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ext2_ino_t ino,
1493 extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ext2_ino_t ino,
1495 extern ext2_ino_t ext2fs_get_icount_size(ext2_icount_t icount);
1496 errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *);
1500 extern errcode_t ext2fs_get_memalign(unsigned long size,
1501 unsigned long align, void *ptr);
1504 extern errcode_t ext2fs_inline_data_init(ext2_filsys fs, ext2_ino_t ino);
1505 extern errcode_t ext2fs_inline_data_size(ext2_filsys fs, ext2_ino_t ino,
1507 extern errcode_t ext2fs_inline_data_get(ext2_filsys fs, ext2_ino_t ino,
1508 struct ext2_inode *inode,
1509 void *buf, size_t *size);
1510 extern errcode_t ext2fs_inline_data_set(ext2_filsys fs, ext2_ino_t ino,
1511 struct ext2_inode *inode,
1512 void *buf, size_t size);
1515 extern errcode_t ext2fs_create_inode_cache(ext2_filsys fs,
1516 unsigned int cache_size);
1517 extern void ext2fs_free_inode_cache(struct ext2_inode_cache *icache);
1518 extern errcode_t ext2fs_flush_icache(ext2_filsys fs);
1519 extern errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan,
1521 struct ext2_inode *inode,
1523 #define EXT2_INODE_SCAN_DEFAULT_BUFFER_BLOCKS 8
1524 extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks,
1525 ext2_inode_scan *ret_scan);
1526 extern void ext2fs_close_inode_scan(ext2_inode_scan scan);
1527 extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino,
1528 struct ext2_inode *inode);
1529 extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan,
1531 extern void ext2fs_set_inode_callback
1532 (ext2_inode_scan scan,
1533 errcode_t (*done_group)(ext2_filsys fs,
1534 ext2_inode_scan scan,
1537 void *done_group_data);
1538 extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags,
1540 extern errcode_t ext2fs_read_inode_full(ext2_filsys fs, ext2_ino_t ino,
1541 struct ext2_inode * inode,
1543 extern errcode_t ext2fs_read_inode(ext2_filsys fs, ext2_ino_t ino,
1544 struct ext2_inode * inode);
1545 extern errcode_t ext2fs_read_inode2(ext2_filsys fs, ext2_ino_t ino,
1546 struct ext2_inode * inode,
1547 int bufsize, int flags);
1548 extern errcode_t ext2fs_write_inode_full(ext2_filsys fs, ext2_ino_t ino,
1549 struct ext2_inode * inode,
1551 extern errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino,
1552 struct ext2_inode * inode);
1553 extern errcode_t ext2fs_write_inode2(ext2_filsys fs, ext2_ino_t ino,
1554 struct ext2_inode * inode,
1555 int bufsize, int flags);
1556 extern errcode_t ext2fs_write_new_inode(ext2_filsys fs, ext2_ino_t ino,
1557 struct ext2_inode * inode);
1558 extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks);
1559 extern errcode_t ext2fs_check_directory(ext2_filsys fs, ext2_ino_t ino);
1562 extern io_manager inode_io_manager;
1563 extern errcode_t ext2fs_inode_io_intern(ext2_filsys fs, ext2_ino_t ino,
1565 extern errcode_t ext2fs_inode_io_intern2(ext2_filsys fs, ext2_ino_t ino,
1566 struct ext2_inode *inode,
1570 extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags);
1571 extern errcode_t ext2fs_check_mount_point(const char *device, int *mount_flags,
1572 char *mtpt, int mtlen);
1576 * NOTE: This function removes from an inode the blocks "start", "end", and
1577 * every block in between.
1579 extern errcode_t ext2fs_punch(ext2_filsys fs, ext2_ino_t ino,
1580 struct ext2_inode *inode,
1581 char *block_buf, blk64_t start,
1585 extern errcode_t ext2fs_lookup(ext2_filsys fs, ext2_ino_t dir, const char *name,
1586 int namelen, char *buf, ext2_ino_t *inode);
1587 extern errcode_t ext2fs_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
1588 const char *name, ext2_ino_t *inode);
1589 errcode_t ext2fs_namei_follow(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
1590 const char *name, ext2_ino_t *inode);
1591 extern errcode_t ext2fs_follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
1592 ext2_ino_t inode, ext2_ino_t *res_inode);
1595 int ext2fs_native_flag(void);
1598 extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino,
1599 ext2_ino_t parent_ino, char **block);
1600 extern errcode_t ext2fs_new_dir_inline_data(ext2_filsys fs, ext2_ino_t dir_ino,
1601 ext2_ino_t parent_ino, __u32 *iblock);
1604 extern const struct ext2fs_nls_table *ext2fs_load_nls_table(int encoding);
1607 extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum,
1611 extern errcode_t ext2fs_zero_blocks(ext2_filsys fs, blk_t blk, int num,
1612 blk_t *ret_blk, int *ret_count);
1613 extern errcode_t ext2fs_zero_blocks2(ext2_filsys fs, blk64_t blk, int num,
1614 blk64_t *ret_blk, int *ret_count);
1615 extern errcode_t ext2fs_create_journal_superblock(ext2_filsys fs,
1616 __u32 num_blocks, int flags,
1618 extern errcode_t ext2fs_add_journal_device(ext2_filsys fs,
1619 ext2_filsys journal_dev);
1620 extern errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t num_blocks,
1622 extern errcode_t ext2fs_add_journal_inode2(ext2_filsys fs, blk_t num_blocks,
1623 blk64_t goal, int flags);
1624 extern int ext2fs_default_journal_size(__u64 num_blocks);
1625 extern int ext2fs_journal_sb_start(int blocksize);
1628 extern errcode_t ext2fs_open(const char *name, int flags, int superblock,
1629 unsigned int block_size, io_manager manager,
1630 ext2_filsys *ret_fs);
1631 extern errcode_t ext2fs_open2(const char *name, const char *io_options,
1632 int flags, int superblock,
1633 unsigned int block_size, io_manager manager,
1634 ext2_filsys *ret_fs);
1636 * The dgrp_t argument to these two functions is not actually a group number
1637 * but a block number offset within a group table! Convert with the formula
1638 * (group_number / groups_per_block).
1640 extern blk64_t ext2fs_descriptor_block_loc2(ext2_filsys fs,
1641 blk64_t group_block, dgrp_t i);
1642 extern blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block,
1644 errcode_t ext2fs_get_data_io(ext2_filsys fs, io_channel *old_io);
1645 errcode_t ext2fs_set_data_io(ext2_filsys fs, io_channel new_io);
1646 errcode_t ext2fs_rewrite_to_io(ext2_filsys fs, io_channel new_io);
1648 /* get_pathname.c */
1649 extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino,
1653 errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name,
1654 ext2_ino_t ino, int flags);
1655 errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir, const char *name,
1656 ext2_ino_t ino, int flags);
1659 errcode_t ext2fs_symlink(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t ino,
1660 const char *name, const char *target);
1661 int ext2fs_is_fast_symlink(struct ext2_inode *inode);
1664 errcode_t ext2fs_mmp_read(ext2_filsys fs, blk64_t mmp_blk, void *buf);
1665 errcode_t ext2fs_mmp_write(ext2_filsys fs, blk64_t mmp_blk, void *buf);
1666 errcode_t ext2fs_mmp_clear(ext2_filsys fs);
1667 errcode_t ext2fs_mmp_init(ext2_filsys fs);
1668 errcode_t ext2fs_mmp_start(ext2_filsys fs);
1669 errcode_t ext2fs_mmp_update(ext2_filsys fs);
1670 errcode_t ext2fs_mmp_update2(ext2_filsys fs, int immediately);
1671 errcode_t ext2fs_mmp_stop(ext2_filsys fs);
1672 unsigned ext2fs_mmp_new_seq(void);
1675 extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs,
1676 ext2_badblocks_list *bb_list);
1678 /* read_bb_file.c */
1679 extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f,
1680 ext2_badblocks_list *bb_list,
1682 void (*invalid)(ext2_filsys fs,
1686 extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f,
1687 ext2_badblocks_list *bb_list,
1688 void (*invalid)(ext2_filsys fs,
1692 extern errcode_t ext2fs_create_resize_inode(ext2_filsys fs);
1695 #define EXT2FS_SHA256_LENGTH 32
1697 extern void ext2fs_sha256(const unsigned char *in, unsigned long in_size,
1698 unsigned char out[EXT2FS_SHA256_LENGTH]);
1702 #define EXT2FS_SHA512_LENGTH 64
1703 extern void ext2fs_sha512(const unsigned char *in, unsigned long in_size,
1704 unsigned char out[EXT2FS_SHA512_LENGTH]);
1707 extern errcode_t ext2fs_dirent_swab_in2(ext2_filsys fs, char *buf, size_t size,
1709 extern errcode_t ext2fs_dirent_swab_in(ext2_filsys fs, char *buf, int flags);
1710 extern errcode_t ext2fs_dirent_swab_out2(ext2_filsys fs, char *buf, size_t size,
1712 extern errcode_t ext2fs_dirent_swab_out(ext2_filsys fs, char *buf, int flags);
1713 extern void ext2fs_swap_ext_attr(char *to, char *from, int bufsize,
1715 extern void ext2fs_swap_ext_attr_header(struct ext2_ext_attr_header *to_header,
1716 struct ext2_ext_attr_header *from_hdr);
1717 extern void ext2fs_swap_ext_attr_entry(struct ext2_ext_attr_entry *to_entry,
1718 struct ext2_ext_attr_entry *from_entry);
1719 extern void ext2fs_swap_super(struct ext2_super_block * super);
1720 extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp);
1721 extern void ext2fs_swap_group_desc2(ext2_filsys, struct ext2_group_desc *gdp);
1722 extern void ext2fs_swap_inode_full(ext2_filsys fs, struct ext2_inode_large *t,
1723 struct ext2_inode_large *f, int hostorder,
1725 extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t,
1726 struct ext2_inode *f, int hostorder);
1727 extern void ext2fs_swap_mmp(struct mmp_struct *mmp);
1730 extern int ext2fs_open_file(const char *pathname, int flags, mode_t mode);
1731 extern int ext2fs_stat(const char *path, ext2fs_struct_stat *buf);
1732 extern int ext2fs_fstat(int fd, ext2fs_struct_stat *buf);
1735 extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode);
1736 extern int ext2fs_inode_has_valid_blocks2(ext2_filsys fs,
1737 struct ext2_inode *inode);
1740 extern int ext2fs_parse_version_string(const char *ver_string);
1741 extern int ext2fs_get_library_version(const char **ver_string,
1742 const char **date_string);
1744 /* write_bb_file.c */
1745 extern errcode_t ext2fs_write_bb_FILE(ext2_badblocks_list bb_list,
1750 /* inline functions */
1751 #ifdef NO_INLINE_FUNCS
1752 extern errcode_t ext2fs_get_mem(unsigned long size, void *ptr);
1753 extern errcode_t ext2fs_get_memzero(unsigned long size, void *ptr);
1754 extern errcode_t ext2fs_get_array(unsigned long count,
1755 unsigned long size, void *ptr);
1756 extern errcode_t ext2fs_get_arrayzero(unsigned long count,
1757 unsigned long size, void *ptr);
1758 extern errcode_t ext2fs_free_mem(void *ptr);
1759 extern errcode_t ext2fs_resize_mem(unsigned long old_size,
1760 unsigned long size, void *ptr);
1761 extern void ext2fs_mark_super_dirty(ext2_filsys fs);
1762 extern void ext2fs_mark_changed(ext2_filsys fs);
1763 extern int ext2fs_test_changed(ext2_filsys fs);
1764 extern void ext2fs_mark_valid(ext2_filsys fs);
1765 extern void ext2fs_unmark_valid(ext2_filsys fs);
1766 extern int ext2fs_test_valid(ext2_filsys fs);
1767 extern void ext2fs_mark_ib_dirty(ext2_filsys fs);
1768 extern void ext2fs_mark_bb_dirty(ext2_filsys fs);
1769 extern int ext2fs_test_ib_dirty(ext2_filsys fs);
1770 extern int ext2fs_test_bb_dirty(ext2_filsys fs);
1771 extern dgrp_t ext2fs_group_of_blk(ext2_filsys fs, blk_t blk);
1772 extern dgrp_t ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino);
1773 extern blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group);
1774 extern blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group);
1775 extern blk_t ext2fs_inode_data_blocks(ext2_filsys fs,
1776 struct ext2_inode *inode);
1777 extern int ext2fs_htree_intnode_maxrecs(ext2_filsys fs, int blocks);
1778 extern unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b);
1779 extern __u64 ext2fs_div64_ceil(__u64 a, __u64 b);
1780 extern int ext2fs_dirent_name_len(const struct ext2_dir_entry *entry);
1781 extern void ext2fs_dirent_set_name_len(struct ext2_dir_entry *entry, int len);
1782 extern int ext2fs_dirent_file_type(const struct ext2_dir_entry *entry);
1783 extern void ext2fs_dirent_set_file_type(struct ext2_dir_entry *entry, int type);
1784 extern struct ext2_inode *ext2fs_inode(struct ext2_inode_large * large_inode);
1785 extern const struct ext2_inode *ext2fs_const_inode(const struct ext2_inode_large * large_inode);
1790 * The actual inlined functions definitions themselves...
1792 * If NO_INLINE_FUNCS is defined, then we won't try to do inline
1795 #if (defined(INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS))
1796 #ifdef INCLUDE_INLINE_FUNCS
1797 #define _INLINE_ extern
1799 #if (__STDC_VERSION__ >= 199901L)
1800 #define _INLINE_ inline
1803 #define _INLINE_ extern __inline__
1804 #else /* For Watcom C */
1805 #define _INLINE_ extern inline
1806 #endif /* __GNUC__ */
1807 #endif /* __STDC_VERSION__ >= 199901L */
1810 #ifndef EXT2_CUSTOM_MEMORY_ROUTINES
1813 * Allocate memory. The 'ptr' arg must point to a pointer.
1815 _INLINE_ errcode_t ext2fs_get_mem(unsigned long size, void *ptr)
1821 return EXT2_ET_NO_MEMORY;
1822 memcpy(ptr, &pp, sizeof (pp));
1826 _INLINE_ errcode_t ext2fs_get_memzero(unsigned long size, void *ptr)
1832 return EXT2_ET_NO_MEMORY;
1833 memset(pp, 0, size);
1834 memcpy(ptr, &pp, sizeof(pp));
1838 _INLINE_ errcode_t ext2fs_get_array(unsigned long count, unsigned long size, void *ptr)
1840 if (count && (~0UL)/count < size)
1841 return EXT2_ET_NO_MEMORY;
1842 return ext2fs_get_mem(count*size, ptr);
1845 _INLINE_ errcode_t ext2fs_get_arrayzero(unsigned long count,
1846 unsigned long size, void *ptr)
1850 if (count && (~0UL)/count < size)
1851 return EXT2_ET_NO_MEMORY;
1852 pp = calloc(count, size);
1854 return EXT2_ET_NO_MEMORY;
1855 memcpy(ptr, &pp, sizeof(pp));
1860 * Free memory. The 'ptr' arg must point to a pointer.
1862 _INLINE_ errcode_t ext2fs_free_mem(void *ptr)
1866 memcpy(&p, ptr, sizeof(p));
1869 memcpy(ptr, &p, sizeof(p));
1874 * Resize memory. The 'ptr' arg must point to a pointer.
1876 _INLINE_ errcode_t ext2fs_resize_mem(unsigned long EXT2FS_ATTR((unused)) old_size,
1877 unsigned long size, void *ptr)
1881 /* Use "memcpy" for pointer assignments here to avoid problems
1882 * with C99 strict type aliasing rules. */
1883 memcpy(&p, ptr, sizeof(p));
1884 p = realloc(p, size);
1886 return EXT2_ET_NO_MEMORY;
1887 memcpy(ptr, &p, sizeof(p));
1890 #endif /* Custom memory routines */
1893 * Mark a filesystem superblock as dirty
1895 _INLINE_ void ext2fs_mark_super_dirty(ext2_filsys fs)
1897 fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_CHANGED;
1901 * Mark a filesystem as changed
1903 _INLINE_ void ext2fs_mark_changed(ext2_filsys fs)
1905 fs->flags |= EXT2_FLAG_CHANGED;
1909 * Check to see if a filesystem has changed
1911 _INLINE_ int ext2fs_test_changed(ext2_filsys fs)
1913 return (fs->flags & EXT2_FLAG_CHANGED);
1917 * Mark a filesystem as valid
1919 _INLINE_ void ext2fs_mark_valid(ext2_filsys fs)
1921 fs->flags |= EXT2_FLAG_VALID;
1925 * Mark a filesystem as NOT valid
1927 _INLINE_ void ext2fs_unmark_valid(ext2_filsys fs)
1929 fs->flags &= ~EXT2_FLAG_VALID;
1933 * Check to see if a filesystem is valid
1935 _INLINE_ int ext2fs_test_valid(ext2_filsys fs)
1937 return (fs->flags & EXT2_FLAG_VALID);
1941 * Mark the inode bitmap as dirty
1943 _INLINE_ void ext2fs_mark_ib_dirty(ext2_filsys fs)
1945 fs->flags |= EXT2_FLAG_IB_DIRTY | EXT2_FLAG_CHANGED;
1949 * Mark the block bitmap as dirty
1951 _INLINE_ void ext2fs_mark_bb_dirty(ext2_filsys fs)
1953 fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_CHANGED;
1957 * Check to see if a filesystem's inode bitmap is dirty
1959 _INLINE_ int ext2fs_test_ib_dirty(ext2_filsys fs)
1961 return (fs->flags & EXT2_FLAG_IB_DIRTY);
1965 * Check to see if a filesystem's block bitmap is dirty
1967 _INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs)
1969 return (fs->flags & EXT2_FLAG_BB_DIRTY);
1973 * Return the group # of a block
1975 _INLINE_ dgrp_t ext2fs_group_of_blk(ext2_filsys fs, blk_t blk)
1977 return ext2fs_group_of_blk2(fs, blk);
1980 * Return the group # of an inode number
1982 _INLINE_ dgrp_t ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino)
1984 return (ino - 1) / fs->super->s_inodes_per_group;
1988 * Return the first block (inclusive) in a group
1990 _INLINE_ blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group)
1992 return (blk_t) ext2fs_group_first_block2(fs, group);
1996 * Return the last block (inclusive) in a group
1998 _INLINE_ blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group)
2000 return (blk_t) ext2fs_group_last_block2(fs, group);
2003 _INLINE_ blk_t ext2fs_inode_data_blocks(ext2_filsys fs,
2004 struct ext2_inode *inode)
2006 return (blk_t) ext2fs_inode_data_blocks2(fs, inode);
2009 _INLINE_ int ext2fs_htree_intnode_maxrecs(ext2_filsys fs, int blocks)
2011 return blocks * ((fs->blocksize - 8) / sizeof(struct ext2_dx_entry));
2015 * This is an efficient, overflow safe way of calculating ceil((1.0 * a) / b)
2017 _INLINE_ unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b)
2021 return ((a - 1) / b) + 1;
2024 _INLINE_ __u64 ext2fs_div64_ceil(__u64 a, __u64 b)
2028 return ((a - 1) / b) + 1;
2031 _INLINE_ int ext2fs_dirent_name_len(const struct ext2_dir_entry *entry)
2033 return entry->name_len & 0xff;
2036 _INLINE_ void ext2fs_dirent_set_name_len(struct ext2_dir_entry *entry, int len)
2038 entry->name_len = (entry->name_len & 0xff00) | (len & 0xff);
2041 _INLINE_ int ext2fs_dirent_file_type(const struct ext2_dir_entry *entry)
2043 return entry->name_len >> 8;
2046 _INLINE_ void ext2fs_dirent_set_file_type(struct ext2_dir_entry *entry, int type)
2048 entry->name_len = (entry->name_len & 0xff) | (type << 8);
2051 _INLINE_ struct ext2_inode *ext2fs_inode(struct ext2_inode_large * large_inode)
2053 /* It is always safe to convert large inode to a small inode */
2054 return (struct ext2_inode *) large_inode;
2057 _INLINE_ const struct ext2_inode *
2058 ext2fs_const_inode(const struct ext2_inode_large * large_inode)
2060 /* It is always safe to convert large inode to a small inode */
2061 return (const struct ext2_inode *) large_inode;
2067 /* htree levels for ext4 */
2068 #define EXT4_HTREE_LEVEL_COMPAT 2
2069 #define EXT4_HTREE_LEVEL 3
2071 static inline unsigned int ext2_dir_htree_level(ext2_filsys fs)
2073 if (ext2fs_has_feature_largedir(fs->super))
2074 return EXT4_HTREE_LEVEL;
2076 return EXT4_HTREE_LEVEL_COMPAT;
2083 #endif /* _EXT2FS_EXT2FS_H */