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
207 #define EXT2_FLAG_BBITMAP_TAIL_PROBLEM 0x1000000
208 #define EXT2_FLAG_IBITMAP_TAIL_PROBLEM 0x2000000
211 * Special flag in the ext2 inode i_flag field that means that this is
212 * a new inode. (So that ext2_write_inode() can clear extra fields.)
214 #define EXT2_NEW_INODE_FL 0x80000000
217 * Flags for mkjournal
219 #define EXT2_MKJOURNAL_V1_SUPER 0x0000001 /* create V1 superblock (deprecated) */
220 #define EXT2_MKJOURNAL_LAZYINIT 0x0000002 /* don't zero journal inode before use*/
221 #define EXT2_MKJOURNAL_NO_MNT_CHECK 0x0000004 /* don't check mount status */
223 struct blk_alloc_ctx;
224 struct opaque_ext2_group_desc;
226 struct struct_ext2_filsys {
231 struct ext2_super_block * super;
232 unsigned int blocksize;
234 dgrp_t group_desc_count;
235 unsigned long desc_blocks;
236 struct opaque_ext2_group_desc * group_desc;
237 unsigned int inode_blocks_per_group;
238 ext2fs_inode_bitmap inode_map;
239 ext2fs_block_bitmap block_map;
240 /* XXX FIXME-64: not 64-bit safe, but not used? */
241 errcode_t (*get_blocks)(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks);
242 errcode_t (*check_directory)(ext2_filsys fs, ext2_ino_t ino);
243 errcode_t (*write_bitmaps)(ext2_filsys fs);
244 errcode_t (*read_inode)(ext2_filsys fs, ext2_ino_t ino,
245 struct ext2_inode *inode);
246 errcode_t (*write_inode)(ext2_filsys fs, ext2_ino_t ino,
247 struct ext2_inode *inode);
248 ext2_badblocks_list badblocks;
250 __u32 stride; /* for mke2fs */
251 struct ext2_super_block * orig_super;
252 struct ext2_image_hdr * image_header;
255 int cluster_ratio_bits;
256 __u16 default_bitmap_type;
259 * Reserved for future expansion
264 * Reserved for the use of the calling application.
271 struct ext2_inode_cache *icache;
275 * More callback functions
277 errcode_t (*get_alloc_block)(ext2_filsys fs, blk64_t goal,
279 errcode_t (*get_alloc_block2)(ext2_filsys fs, blk64_t goal,
280 blk64_t *ret, struct blk_alloc_ctx *ctx);
281 void (*block_alloc_stats)(ext2_filsys fs, blk64_t blk, int inuse);
284 * Buffers for Multiple mount protection(MMP) block.
291 * Time at which e2fsck last updated the MMP block.
293 long mmp_last_written;
295 /* progress operation functions */
296 struct ext2fs_progress_ops *progress_ops;
298 /* Precomputed FS UUID checksum for seeding other checksums */
301 io_channel journal_io;
304 /* New block range allocation hooks */
305 errcode_t (*new_range)(ext2_filsys fs, int flags, blk64_t goal,
306 blk64_t len, blk64_t *pblk, blk64_t *plen);
307 void (*block_alloc_stats_range)(ext2_filsys fs, blk64_t blk, blk_t num,
310 /* hashmap for SHA of data blocks */
311 struct ext2fs_hashmap* block_sha_map;
313 const struct ext2fs_nls_table *encoding;
316 #if EXT2_FLAT_INCLUDES
317 #include "e2_bitops.h"
319 #include <ext2fs/bitops.h>
323 * 64-bit bitmap backend types
325 #define EXT2FS_BMAP64_BITARRAY 1
326 #define EXT2FS_BMAP64_RBTREE 2
327 #define EXT2FS_BMAP64_AUTODIR 3
330 * Return flags for the block iterator functions
332 #define BLOCK_CHANGED 1
333 #define BLOCK_ABORT 2
334 #define BLOCK_ERROR 4
335 #define BLOCK_INLINE_DATA_CHANGED 8
338 * Block interate flags
340 * BLOCK_FLAG_APPEND, or BLOCK_FLAG_HOLE, indicates that the interator
341 * function should be called on blocks where the block number is zero.
342 * This is used by ext2fs_expand_dir() to be able to add a new block
343 * to an inode. It can also be used for programs that want to be able
344 * to deal with files that contain "holes".
346 * BLOCK_FLAG_DEPTH_TRAVERSE indicates that the iterator function for
347 * the indirect, doubly indirect, etc. blocks should be called after
348 * all of the blocks contained in the indirect blocks are processed.
349 * This is useful if you are going to be deallocating blocks from an
352 * BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be
353 * called for data blocks only.
355 * BLOCK_FLAG_READ_ONLY is a promise by the caller that it will not
356 * modify returned block number.
358 * BLOCK_FLAG_NO_LARGE is for internal use only. It informs
359 * ext2fs_block_iterate2 that large files won't be accepted.
361 #define BLOCK_FLAG_APPEND 1
362 #define BLOCK_FLAG_HOLE 1
363 #define BLOCK_FLAG_DEPTH_TRAVERSE 2
364 #define BLOCK_FLAG_DATA_ONLY 4
365 #define BLOCK_FLAG_READ_ONLY 8
367 #define BLOCK_FLAG_NO_LARGE 0x1000
370 * Magic "block count" return values for the block iterator function.
372 #define BLOCK_COUNT_IND (-1)
373 #define BLOCK_COUNT_DIND (-2)
374 #define BLOCK_COUNT_TIND (-3)
375 #define BLOCK_COUNT_TRANSLATOR (-4)
377 #define BLOCK_ALLOC_UNKNOWN 0
378 #define BLOCK_ALLOC_DATA 1
379 #define BLOCK_ALLOC_METADATA 2
381 struct blk_alloc_ctx {
383 struct ext2_inode *inode;
390 * Flags for ext2fs_move_blocks
392 #define EXT2_BMOVE_GET_DBLIST 0x0001
393 #define EXT2_BMOVE_DEBUG 0x0002
397 * Generic (non-filesystem layout specific) extents structure
400 #define EXT2_EXTENT_FLAGS_LEAF 0x0001
401 #define EXT2_EXTENT_FLAGS_UNINIT 0x0002
402 #define EXT2_EXTENT_FLAGS_SECOND_VISIT 0x0004
404 struct ext2fs_extent {
405 blk64_t e_pblk; /* first physical block */
406 blk64_t e_lblk; /* first logical block extent covers */
407 __u32 e_len; /* number of blocks covered by extent */
408 __u32 e_flags; /* extent flags */
411 typedef struct ext2_extent_handle *ext2_extent_handle_t;
412 typedef struct ext2_extent_path *ext2_extent_path_t;
415 * Flags used by ext2fs_extent_get()
417 #define EXT2_EXTENT_CURRENT 0x0000
418 #define EXT2_EXTENT_MOVE_MASK 0x000F
419 #define EXT2_EXTENT_ROOT 0x0001
420 #define EXT2_EXTENT_LAST_LEAF 0x0002
421 #define EXT2_EXTENT_FIRST_SIB 0x0003
422 #define EXT2_EXTENT_LAST_SIB 0x0004
423 #define EXT2_EXTENT_NEXT_SIB 0x0005
424 #define EXT2_EXTENT_PREV_SIB 0x0006
425 #define EXT2_EXTENT_NEXT_LEAF 0x0007
426 #define EXT2_EXTENT_PREV_LEAF 0x0008
427 #define EXT2_EXTENT_NEXT 0x0009
428 #define EXT2_EXTENT_PREV 0x000A
429 #define EXT2_EXTENT_UP 0x000B
430 #define EXT2_EXTENT_DOWN 0x000C
431 #define EXT2_EXTENT_DOWN_AND_LAST 0x000D
434 * Flags used by ext2fs_extent_insert()
436 #define EXT2_EXTENT_INSERT_AFTER 0x0001 /* insert after handle loc'n */
437 #define EXT2_EXTENT_INSERT_NOSPLIT 0x0002 /* insert may not cause split */
440 * Flags used by ext2fs_extent_delete()
442 #define EXT2_EXTENT_DELETE_KEEP_EMPTY 0x001 /* keep node if last extent gone */
445 * Flags used by ext2fs_extent_set_bmap()
447 #define EXT2_EXTENT_SET_BMAP_UNINIT 0x0001
450 * Data structure returned by ext2fs_extent_get_info()
452 struct ext2_extent_info {
462 __u32 max_uninit_len;
466 * Flags for directory block reading and writing functions
468 #define EXT2_DIRBLOCK_V2_STRUCT 0x0001
471 * Return flags for the directory iterator functions
473 #define DIRENT_CHANGED 1
474 #define DIRENT_ABORT 2
475 #define DIRENT_ERROR 3
478 * Directory iterator flags
481 #define DIRENT_FLAG_INCLUDE_EMPTY 1
482 #define DIRENT_FLAG_INCLUDE_REMOVED 2
483 #define DIRENT_FLAG_INCLUDE_CSUM 4
484 #define DIRENT_FLAG_INCLUDE_INLINE_DATA 8
486 #define DIRENT_DOT_FILE 1
487 #define DIRENT_DOT_DOT_FILE 2
488 #define DIRENT_OTHER_FILE 3
489 #define DIRENT_DELETED_FILE 4
490 #define DIRENT_CHECKSUM 5
493 * Inode scan definitions
495 typedef struct ext2_struct_inode_scan *ext2_inode_scan;
500 #define EXT2_SF_CHK_BADBLOCKS 0x0001
501 #define EXT2_SF_BAD_INODE_BLK 0x0002
502 #define EXT2_SF_BAD_EXTRA_BYTES 0x0004
503 #define EXT2_SF_SKIP_MISSING_ITABLE 0x0008
504 #define EXT2_SF_DO_LAZY 0x0010
505 #define EXT2_SF_WARN_GARBAGE_INODES 0x0020
508 * ext2fs_check_if_mounted flags
510 #define EXT2_MF_MOUNTED 1
511 #define EXT2_MF_ISROOT 2
512 #define EXT2_MF_READONLY 4
513 #define EXT2_MF_SWAP 8
514 #define EXT2_MF_BUSY 16
517 * Ext2/linux mode flags. We define them here so that we don't need
518 * to depend on the OS's sys/stat.h, since we may be compiling on a
521 #define LINUX_S_IFMT 00170000
522 #define LINUX_S_IFSOCK 0140000
523 #define LINUX_S_IFLNK 0120000
524 #define LINUX_S_IFREG 0100000
525 #define LINUX_S_IFBLK 0060000
526 #define LINUX_S_IFDIR 0040000
527 #define LINUX_S_IFCHR 0020000
528 #define LINUX_S_IFIFO 0010000
529 #define LINUX_S_ISUID 0004000
530 #define LINUX_S_ISGID 0002000
531 #define LINUX_S_ISVTX 0001000
533 #define LINUX_S_IRWXU 00700
534 #define LINUX_S_IRUSR 00400
535 #define LINUX_S_IWUSR 00200
536 #define LINUX_S_IXUSR 00100
538 #define LINUX_S_IRWXG 00070
539 #define LINUX_S_IRGRP 00040
540 #define LINUX_S_IWGRP 00020
541 #define LINUX_S_IXGRP 00010
543 #define LINUX_S_IRWXO 00007
544 #define LINUX_S_IROTH 00004
545 #define LINUX_S_IWOTH 00002
546 #define LINUX_S_IXOTH 00001
548 #define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK)
549 #define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG)
550 #define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR)
551 #define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR)
552 #define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK)
553 #define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO)
554 #define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK)
557 * ext2 size of an inode
559 #define EXT2_I_SIZE(i) ((i)->i_size | ((__u64) (i)->i_size_high << 32))
562 * ext2_icount_t abstraction
564 #define EXT2_ICOUNT_OPT_INCREMENT 0x01
565 #define EXT2_ICOUNT_OPT_FULLMAP 0x02
567 typedef struct ext2_icount *ext2_icount_t;
570 * Flags for ext2fs_bmap
572 #define BMAP_ALLOC 0x0001
573 #define BMAP_SET 0x0002
574 #define BMAP_UNINIT 0x0004
575 #define BMAP_ZERO 0x0008
578 * Returned flags from ext2fs_bmap
580 #define BMAP_RET_UNINIT 0x0001
583 * Flags for ext2fs_read_inode2
585 #define READ_INODE_NOCSUM 0x0001
588 * Flags for ext2fs_write_inode2
590 #define WRITE_INODE_NOCSUM 0x0001
593 * Flags for imager.c functions
595 #define IMAGER_FLAG_INODEMAP 1
596 #define IMAGER_FLAG_SPARSEWRITE 2
599 * For checking structure magic numbers...
602 #define EXT2_CHECK_MAGIC(struct, code) \
603 if ((struct)->magic != (code)) return (code)
606 * Features supported by this version of the library
608 #define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\
609 EXT2_FEATURE_COMPAT_IMAGIC_INODES|\
610 EXT3_FEATURE_COMPAT_HAS_JOURNAL|\
611 EXT2_FEATURE_COMPAT_RESIZE_INODE|\
612 EXT2_FEATURE_COMPAT_DIR_INDEX|\
613 EXT2_FEATURE_COMPAT_EXT_ATTR|\
614 EXT4_FEATURE_COMPAT_SPARSE_SUPER2|\
615 EXT4_FEATURE_COMPAT_FAST_COMMIT|\
616 EXT4_FEATURE_COMPAT_STABLE_INODES)
619 #define EXT4_LIB_INCOMPAT_MMP EXT4_FEATURE_INCOMPAT_MMP
621 #define EXT4_LIB_INCOMPAT_MMP (0)
624 #define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\
625 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\
626 EXT2_FEATURE_INCOMPAT_META_BG|\
627 EXT3_FEATURE_INCOMPAT_RECOVER|\
628 EXT3_FEATURE_INCOMPAT_EXTENTS|\
629 EXT4_FEATURE_INCOMPAT_FLEX_BG|\
630 EXT4_FEATURE_INCOMPAT_EA_INODE|\
631 EXT4_LIB_INCOMPAT_MMP|\
632 EXT4_FEATURE_INCOMPAT_64BIT|\
633 EXT4_FEATURE_INCOMPAT_INLINE_DATA|\
634 EXT4_FEATURE_INCOMPAT_ENCRYPT|\
635 EXT4_FEATURE_INCOMPAT_CASEFOLD|\
636 EXT4_FEATURE_INCOMPAT_CSUM_SEED|\
637 EXT4_FEATURE_INCOMPAT_LARGEDIR)
639 #define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\
640 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|\
641 EXT2_FEATURE_RO_COMPAT_LARGE_FILE|\
642 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|\
643 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|\
644 EXT4_FEATURE_RO_COMPAT_GDT_CSUM|\
645 EXT4_FEATURE_RO_COMPAT_BIGALLOC|\
646 EXT4_FEATURE_RO_COMPAT_QUOTA|\
647 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM|\
648 EXT4_FEATURE_RO_COMPAT_READONLY |\
649 EXT4_FEATURE_RO_COMPAT_PROJECT |\
650 EXT4_FEATURE_RO_COMPAT_SHARED_BLOCKS |\
651 EXT4_FEATURE_RO_COMPAT_VERITY)
654 * These features are only allowed if EXT2_FLAG_SOFTSUPP_FEATURES is passed
657 #define EXT2_LIB_SOFTSUPP_INCOMPAT (0)
658 #define EXT2_LIB_SOFTSUPP_RO_COMPAT (EXT4_FEATURE_RO_COMPAT_REPLICA)
661 /* Translate a block number to a cluster number */
662 #define EXT2FS_CLUSTER_RATIO(fs) (1 << (fs)->cluster_ratio_bits)
663 #define EXT2FS_CLUSTER_MASK(fs) (EXT2FS_CLUSTER_RATIO(fs) - 1)
664 #define EXT2FS_B2C(fs, blk) ((blk) >> (fs)->cluster_ratio_bits)
665 /* Translate a cluster number to a block number */
666 #define EXT2FS_C2B(fs, cluster) ((cluster) << (fs)->cluster_ratio_bits)
667 /* Translate # of blks to # of clusters */
668 #define EXT2FS_NUM_B2C(fs, blks) (((blks) + EXT2FS_CLUSTER_MASK(fs)) >> \
669 (fs)->cluster_ratio_bits)
671 #if defined(HAVE_FSTAT64) && !defined(__OSX_AVAILABLE_BUT_DEPRECATED)
672 typedef struct stat64 ext2fs_struct_stat;
674 typedef struct stat ext2fs_struct_stat;
678 * For ext2fs_close2() and ext2fs_flush2(), this flag allows you to
679 * avoid the fsync call.
681 #define EXT2_FLAG_FLUSH_NO_SYNC 1
684 * Modify and iterate extended attributes
686 struct ext2_xattr_handle;
687 #define XATTR_ABORT 1
688 #define XATTR_CHANGED 2
691 * function prototypes
693 static inline int ext2fs_has_group_desc_csum(ext2_filsys fs)
695 return ext2fs_has_feature_metadata_csum(fs->super) ||
696 ext2fs_has_feature_gdt_csum(fs->super);
699 /* The LARGE_FILE feature should be set if we have stored files 2GB+ in size */
700 static inline int ext2fs_needs_large_file_feature(unsigned long long file_size)
702 return file_size >= 0x80000000ULL;
706 extern void ext2fs_clear_block_uninit(ext2_filsys fs, dgrp_t group);
707 extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode,
708 ext2fs_inode_bitmap map, ext2_ino_t *ret);
709 extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal,
710 ext2fs_block_bitmap map, blk_t *ret);
711 extern errcode_t ext2fs_new_block2(ext2_filsys fs, blk64_t goal,
712 ext2fs_block_bitmap map, blk64_t *ret);
713 extern errcode_t ext2fs_new_block3(ext2_filsys fs, blk64_t goal,
714 ext2fs_block_bitmap map, blk64_t *ret,
715 struct blk_alloc_ctx *ctx);
716 extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start,
717 blk_t finish, int num,
718 ext2fs_block_bitmap map,
720 extern errcode_t ext2fs_get_free_blocks2(ext2_filsys fs, blk64_t start,
721 blk64_t finish, int num,
722 ext2fs_block_bitmap map,
724 extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal,
725 char *block_buf, blk_t *ret);
726 extern errcode_t ext2fs_alloc_block2(ext2_filsys fs, blk64_t goal,
727 char *block_buf, blk64_t *ret);
728 extern errcode_t ext2fs_alloc_block3(ext2_filsys fs, blk64_t goal,
729 char *block_buf, blk64_t *ret,
730 struct blk_alloc_ctx *ctx);
732 extern void ext2fs_set_alloc_block_callback(ext2_filsys fs,
733 errcode_t (*func)(ext2_filsys fs,
736 errcode_t (**old)(ext2_filsys fs,
739 blk64_t ext2fs_find_inode_goal(ext2_filsys fs, ext2_ino_t ino,
740 struct ext2_inode *inode, blk64_t lblk);
741 extern void ext2fs_set_new_range_callback(ext2_filsys fs,
742 errcode_t (*func)(ext2_filsys fs, int flags, blk64_t goal,
743 blk64_t len, blk64_t *pblk, blk64_t *plen),
744 errcode_t (**old)(ext2_filsys fs, int flags, blk64_t goal,
745 blk64_t len, blk64_t *pblk, blk64_t *plen));
746 extern void ext2fs_set_block_alloc_stats_range_callback(ext2_filsys fs,
747 void (*func)(ext2_filsys fs, blk64_t blk,
748 blk_t num, int inuse),
749 void (**old)(ext2_filsys fs, blk64_t blk,
750 blk_t num, int inuse));
751 #define EXT2_NEWRANGE_FIXED_GOAL (0x1)
752 #define EXT2_NEWRANGE_MIN_LENGTH (0x2)
753 #define EXT2_NEWRANGE_ALL_FLAGS (0x3)
754 errcode_t ext2fs_new_range(ext2_filsys fs, int flags, blk64_t goal,
755 blk64_t len, ext2fs_block_bitmap map, blk64_t *pblk,
757 #define EXT2_ALLOCRANGE_FIXED_GOAL (0x1)
758 #define EXT2_ALLOCRANGE_ZERO_BLOCKS (0x2)
759 #define EXT2_ALLOCRANGE_ALL_FLAGS (0x3)
760 errcode_t ext2fs_alloc_range(ext2_filsys fs, int flags, blk64_t goal,
761 blk_t len, blk64_t *ret);
764 extern int ext2fs_reserve_super_and_bgd(ext2_filsys fs,
766 ext2fs_block_bitmap bmap);
767 extern void ext2fs_set_block_alloc_stats_callback(ext2_filsys fs,
768 void (*func)(ext2_filsys fs,
771 void (**old)(ext2_filsys fs,
776 void ext2fs_inode_alloc_stats(ext2_filsys fs, ext2_ino_t ino, int inuse);
777 void ext2fs_inode_alloc_stats2(ext2_filsys fs, ext2_ino_t ino,
778 int inuse, int isdir);
779 void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse);
780 void ext2fs_block_alloc_stats2(ext2_filsys fs, blk64_t blk, int inuse);
781 void ext2fs_block_alloc_stats_range(ext2_filsys fs, blk64_t blk,
782 blk_t num, int inuse);
785 extern errcode_t ext2fs_allocate_tables(ext2_filsys fs);
786 extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group,
787 ext2fs_block_bitmap bmap);
790 extern errcode_t ext2fs_u32_list_create(ext2_u32_list *ret, int size);
791 extern errcode_t ext2fs_u32_list_add(ext2_u32_list bb, __u32 blk);
792 extern int ext2fs_u32_list_find(ext2_u32_list bb, __u32 blk);
793 extern int ext2fs_u32_list_test(ext2_u32_list bb, blk_t blk);
794 extern errcode_t ext2fs_u32_list_iterate_begin(ext2_u32_list bb,
795 ext2_u32_iterate *ret);
796 extern int ext2fs_u32_list_iterate(ext2_u32_iterate iter, blk_t *blk);
797 extern void ext2fs_u32_list_iterate_end(ext2_u32_iterate iter);
798 extern errcode_t ext2fs_u32_copy(ext2_u32_list src, ext2_u32_list *dest);
799 extern int ext2fs_u32_list_equal(ext2_u32_list bb1, ext2_u32_list bb2);
801 extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret,
803 extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb,
805 extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb,
807 extern int ext2fs_u32_list_del(ext2_u32_list bb, __u32 blk);
808 extern void ext2fs_badblocks_list_del(ext2_u32_list bb, __u32 blk);
810 ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb,
811 ext2_badblocks_iterate *ret);
812 extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter,
814 extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter);
815 extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src,
816 ext2_badblocks_list *dest);
817 extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1,
818 ext2_badblocks_list bb2);
819 extern int ext2fs_u32_list_count(ext2_u32_list bb);
822 extern errcode_t badblocks_list_create(badblocks_list *ret, int size);
823 extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk);
824 extern int badblocks_list_test(badblocks_list bb, blk_t blk);
825 extern errcode_t badblocks_list_iterate_begin(badblocks_list bb,
826 badblocks_iterate *ret);
827 extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk);
828 extern void badblocks_list_iterate_end(badblocks_iterate iter);
829 extern void badblocks_list_free(badblocks_list bb);
832 extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs,
833 ext2_badblocks_list bb_list);
836 extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap);
837 extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap);
838 extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src,
839 ext2fs_generic_bitmap *dest);
840 extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs);
841 extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs);
842 extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs);
843 extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs);
844 extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs,
846 ext2fs_block_bitmap *ret);
847 extern errcode_t ext2fs_allocate_subcluster_bitmap(ext2_filsys fs,
849 ext2fs_block_bitmap *ret);
850 extern int ext2fs_get_bitmap_granularity(ext2fs_block_bitmap bitmap);
851 extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs,
853 ext2fs_inode_bitmap *ret);
854 extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap,
855 ext2_ino_t end, ext2_ino_t *oend);
856 extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap,
857 blk_t end, blk_t *oend);
858 extern errcode_t ext2fs_fudge_block_bitmap_end2(ext2fs_block_bitmap bitmap,
859 blk64_t end, blk64_t *oend);
860 extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap);
861 extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap);
862 extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs);
863 extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs);
864 extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end,
865 ext2fs_inode_bitmap bmap);
866 extern errcode_t ext2fs_resize_inode_bitmap2(__u64 new_end,
868 ext2fs_inode_bitmap bmap);
869 extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end,
870 ext2fs_block_bitmap bmap);
871 extern errcode_t ext2fs_resize_block_bitmap2(__u64 new_end,
873 ext2fs_block_bitmap bmap);
874 extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1,
875 ext2fs_block_bitmap bm2);
876 extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1,
877 ext2fs_inode_bitmap bm2);
878 extern errcode_t ext2fs_set_inode_bitmap_range(ext2fs_inode_bitmap bmap,
879 ext2_ino_t start, unsigned int num,
881 extern errcode_t ext2fs_set_inode_bitmap_range2(ext2fs_inode_bitmap bmap,
882 __u64 start, size_t num,
884 extern errcode_t ext2fs_get_inode_bitmap_range(ext2fs_inode_bitmap bmap,
885 ext2_ino_t start, unsigned int num,
887 extern errcode_t ext2fs_get_inode_bitmap_range2(ext2fs_inode_bitmap bmap,
888 __u64 start, size_t num,
890 extern errcode_t ext2fs_set_block_bitmap_range(ext2fs_block_bitmap bmap,
891 blk_t start, unsigned int num,
893 extern errcode_t ext2fs_set_block_bitmap_range2(ext2fs_block_bitmap bmap,
894 blk64_t start, size_t num,
896 extern errcode_t ext2fs_get_block_bitmap_range(ext2fs_block_bitmap bmap,
897 blk_t start, unsigned int num,
899 extern errcode_t ext2fs_get_block_bitmap_range2(ext2fs_block_bitmap bmap,
900 blk64_t start, size_t num,
904 extern __u32 ext2fs_inode_bitmap_checksum(ext2_filsys fs, dgrp_t group);
905 extern __u32 ext2fs_block_bitmap_checksum(ext2_filsys fs, dgrp_t group);
906 extern dgrp_t ext2fs_group_of_blk2(ext2_filsys fs, blk64_t);
907 extern blk64_t ext2fs_group_first_block2(ext2_filsys fs, dgrp_t group);
908 extern blk64_t ext2fs_group_last_block2(ext2_filsys fs, dgrp_t group);
909 extern int ext2fs_group_blocks_count(ext2_filsys fs, dgrp_t group);
910 extern blk64_t ext2fs_inode_data_blocks2(ext2_filsys fs,
911 struct ext2_inode *inode);
912 extern blk64_t ext2fs_inode_i_blocks(ext2_filsys fs,
913 struct ext2_inode *inode);
914 extern blk64_t ext2fs_blocks_count(struct ext2_super_block *super);
915 extern void ext2fs_blocks_count_set(struct ext2_super_block *super,
917 extern void ext2fs_blocks_count_add(struct ext2_super_block *super,
919 extern blk64_t ext2fs_r_blocks_count(struct ext2_super_block *super);
920 extern void ext2fs_r_blocks_count_set(struct ext2_super_block *super,
922 extern void ext2fs_r_blocks_count_add(struct ext2_super_block *super,
924 extern blk64_t ext2fs_free_blocks_count(struct ext2_super_block *super);
925 extern void ext2fs_free_blocks_count_set(struct ext2_super_block *super,
927 extern void ext2fs_free_blocks_count_add(struct ext2_super_block *super,
929 /* Block group descriptor accessor functions */
930 extern struct ext2_group_desc *ext2fs_group_desc(ext2_filsys fs,
931 struct opaque_ext2_group_desc *gdp,
933 extern blk64_t ext2fs_block_bitmap_csum(ext2_filsys fs, dgrp_t group);
934 extern blk64_t ext2fs_block_bitmap_loc(ext2_filsys fs, dgrp_t group);
935 extern void ext2fs_block_bitmap_loc_set(ext2_filsys fs, dgrp_t group,
937 extern __u32 ext2fs_inode_bitmap_csum(ext2_filsys fs, dgrp_t group);
938 extern blk64_t ext2fs_inode_bitmap_loc(ext2_filsys fs, dgrp_t group);
939 extern void ext2fs_inode_bitmap_loc_set(ext2_filsys fs, dgrp_t group,
941 extern blk64_t ext2fs_inode_table_loc(ext2_filsys fs, dgrp_t group);
942 extern void ext2fs_inode_table_loc_set(ext2_filsys fs, dgrp_t group,
944 extern __u32 ext2fs_bg_free_blocks_count(ext2_filsys fs, dgrp_t group);
945 extern void ext2fs_bg_free_blocks_count_set(ext2_filsys fs, dgrp_t group,
947 extern __u32 ext2fs_bg_free_inodes_count(ext2_filsys fs, dgrp_t group);
948 extern void ext2fs_bg_free_inodes_count_set(ext2_filsys fs, dgrp_t group,
950 extern __u32 ext2fs_bg_used_dirs_count(ext2_filsys fs, dgrp_t group);
951 extern void ext2fs_bg_used_dirs_count_set(ext2_filsys fs, dgrp_t group,
953 extern __u32 ext2fs_bg_itable_unused(ext2_filsys fs, dgrp_t group);
954 extern void ext2fs_bg_itable_unused_set(ext2_filsys fs, dgrp_t group,
956 extern __u16 ext2fs_bg_flags(ext2_filsys fs, dgrp_t group);
957 extern void ext2fs_bg_flags_zap(ext2_filsys fs, dgrp_t group);
958 extern int ext2fs_bg_flags_test(ext2_filsys fs, dgrp_t group, __u16 bg_flag);
959 extern void ext2fs_bg_flags_set(ext2_filsys fs, dgrp_t group, __u16 bg_flags);
960 extern void ext2fs_bg_flags_clear(ext2_filsys fs, dgrp_t group, __u16 bg_flags);
961 extern __u16 ext2fs_bg_checksum(ext2_filsys fs, dgrp_t group);
962 extern void ext2fs_bg_checksum_set(ext2_filsys fs, dgrp_t group, __u16 checksum);
963 extern blk64_t ext2fs_file_acl_block(ext2_filsys fs,
964 const struct ext2_inode *inode);
965 extern void ext2fs_file_acl_block_set(ext2_filsys fs,
966 struct ext2_inode *inode, blk64_t blk);
967 extern errcode_t ext2fs_inode_size_set(ext2_filsys fs, struct ext2_inode *inode,
971 extern errcode_t ext2fs_block_iterate(ext2_filsys fs,
975 int (*func)(ext2_filsys fs,
980 errcode_t ext2fs_block_iterate2(ext2_filsys fs,
984 int (*func)(ext2_filsys fs,
986 e2_blkcnt_t blockcnt,
991 errcode_t ext2fs_block_iterate3(ext2_filsys fs,
995 int (*func)(ext2_filsys fs,
997 e2_blkcnt_t blockcnt,
1004 extern errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino,
1005 struct ext2_inode *inode,
1006 char *block_buf, int bmap_flags,
1007 blk_t block, blk_t *phys_blk);
1008 extern errcode_t ext2fs_bmap2(ext2_filsys fs, ext2_ino_t ino,
1009 struct ext2_inode *inode,
1010 char *block_buf, int bmap_flags, blk64_t block,
1011 int *ret_flags, blk64_t *phys_blk);
1012 errcode_t ext2fs_map_cluster_block(ext2_filsys fs, ext2_ino_t ino,
1013 struct ext2_inode *inode, blk64_t lblk,
1018 extern errcode_t ext2fs_move_blocks(ext2_filsys fs,
1019 ext2fs_block_bitmap reserve,
1020 ext2fs_block_bitmap alloc_map,
1025 extern errcode_t ext2fs_check_desc(ext2_filsys fs);
1028 extern errcode_t ext2fs_close(ext2_filsys fs);
1029 extern errcode_t ext2fs_close2(ext2_filsys fs, int flags);
1030 extern errcode_t ext2fs_close_free(ext2_filsys *fs);
1031 extern errcode_t ext2fs_flush(ext2_filsys fs);
1032 extern errcode_t ext2fs_flush2(ext2_filsys fs, int flags);
1033 extern int ext2fs_bg_has_super(ext2_filsys fs, dgrp_t group_block);
1034 extern errcode_t ext2fs_super_and_bgd_loc2(ext2_filsys fs,
1036 blk64_t *ret_super_blk,
1037 blk64_t *ret_old_desc_blk,
1038 blk64_t *ret_new_desc_blk,
1039 blk_t *ret_used_blks);
1040 extern int ext2fs_super_and_bgd_loc(ext2_filsys fs,
1042 blk_t *ret_super_blk,
1043 blk_t *ret_old_desc_blk,
1044 blk_t *ret_new_desc_blk,
1046 extern void ext2fs_update_dynamic_rev(ext2_filsys fs);
1049 extern __u32 ext2fs_crc32_be(__u32 crc, unsigned char const *p, size_t len);
1050 extern __u32 ext2fs_crc32c_le(__u32 crc, unsigned char const *p, size_t len);
1053 extern void ext2fs_init_csum_seed(ext2_filsys fs);
1054 extern errcode_t ext2fs_mmp_csum_set(ext2_filsys fs, struct mmp_struct *mmp);
1055 extern int ext2fs_mmp_csum_verify(ext2_filsys, struct mmp_struct *mmp);
1056 extern int ext2fs_verify_csum_type(ext2_filsys fs, struct ext2_super_block *sb);
1057 extern errcode_t ext2fs_superblock_csum_set(ext2_filsys fs,
1058 struct ext2_super_block *sb);
1059 extern int ext2fs_superblock_csum_verify(ext2_filsys fs,
1060 struct ext2_super_block *sb);
1061 extern errcode_t ext2fs_ext_attr_block_csum_set(ext2_filsys fs,
1062 ext2_ino_t inum, blk64_t block,
1063 struct ext2_ext_attr_header *hdr);
1064 extern int ext2fs_ext_attr_block_csum_verify(ext2_filsys fs, ext2_ino_t inum,
1066 struct ext2_ext_attr_header *hdr);
1067 #define EXT2_DIRENT_TAIL(block, blocksize) \
1068 ((struct ext2_dir_entry_tail *)(((char *)(block)) + \
1069 (blocksize) - sizeof(struct ext2_dir_entry_tail)))
1071 extern void ext2fs_initialize_dirent_tail(ext2_filsys fs,
1072 struct ext2_dir_entry_tail *t);
1073 extern int ext2fs_dirent_has_tail(ext2_filsys fs,
1074 struct ext2_dir_entry *dirent);
1075 extern int ext2fs_dirent_csum_verify(ext2_filsys fs, ext2_ino_t inum,
1076 struct ext2_dir_entry *dirent);
1077 extern int ext2fs_dir_block_csum_verify(ext2_filsys fs, ext2_ino_t inum,
1078 struct ext2_dir_entry *dirent);
1079 extern errcode_t ext2fs_dir_block_csum_set(ext2_filsys fs, ext2_ino_t inum,
1080 struct ext2_dir_entry *dirent);
1081 extern errcode_t ext2fs_get_dx_countlimit(ext2_filsys fs,
1082 struct ext2_dir_entry *dirent,
1083 struct ext2_dx_countlimit **cc,
1085 extern errcode_t ext2fs_dx_csum(ext2_filsys fs, ext2_ino_t inum,
1086 struct ext2_dir_entry *dirent,
1087 __u32 *crc, struct ext2_dx_tail **ret_t);
1088 extern errcode_t ext2fs_extent_block_csum_set(ext2_filsys fs,
1090 struct ext3_extent_header *eh);
1091 extern int ext2fs_extent_block_csum_verify(ext2_filsys fs,
1093 struct ext3_extent_header *eh);
1094 extern errcode_t ext2fs_block_bitmap_csum_set(ext2_filsys fs, dgrp_t group,
1095 char *bitmap, int size);
1096 extern int ext2fs_block_bitmap_csum_verify(ext2_filsys fs, dgrp_t group,
1097 char *bitmap, int size);
1098 extern errcode_t ext2fs_inode_bitmap_csum_set(ext2_filsys fs, dgrp_t group,
1099 char *bitmap, int size);
1100 extern int ext2fs_inode_bitmap_csum_verify(ext2_filsys fs, dgrp_t group,
1101 char *bitmap, int size);
1102 extern errcode_t ext2fs_inode_csum_set(ext2_filsys fs, ext2_ino_t inum,
1103 struct ext2_inode_large *inode);
1104 extern int ext2fs_inode_csum_verify(ext2_filsys fs, ext2_ino_t inum,
1105 struct ext2_inode_large *inode);
1106 extern void ext2fs_group_desc_csum_set(ext2_filsys fs, dgrp_t group);
1107 extern int ext2fs_group_desc_csum_verify(ext2_filsys fs, dgrp_t group);
1108 extern errcode_t ext2fs_set_gdt_csum(ext2_filsys fs);
1109 extern __u16 ext2fs_group_desc_csum(ext2_filsys fs, dgrp_t group);
1112 extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist);
1113 extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ext2_ino_t ino,
1114 blk_t blk, int blockcnt);
1115 extern errcode_t ext2fs_add_dir_block2(ext2_dblist dblist, ext2_ino_t ino,
1116 blk64_t blk, e2_blkcnt_t blockcnt);
1117 extern void ext2fs_dblist_sort(ext2_dblist dblist,
1118 EXT2_QSORT_TYPE (*sortfunc)(const void *,
1120 extern void ext2fs_dblist_sort2(ext2_dblist dblist,
1121 EXT2_QSORT_TYPE (*sortfunc)(const void *,
1123 extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist,
1124 int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info,
1127 extern errcode_t ext2fs_dblist_iterate2(ext2_dblist dblist,
1128 int (*func)(ext2_filsys fs, struct ext2_db_entry2 *db_info,
1131 extern errcode_t ext2fs_dblist_iterate3(ext2_dblist dblist,
1132 int (*func)(ext2_filsys fs, struct ext2_db_entry2 *db_info,
1134 unsigned long long start,
1135 unsigned long long count,
1137 extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ext2_ino_t ino,
1138 blk_t blk, int blockcnt);
1139 extern errcode_t ext2fs_set_dir_block2(ext2_dblist dblist, ext2_ino_t ino,
1140 blk64_t blk, e2_blkcnt_t blockcnt);
1141 extern errcode_t ext2fs_copy_dblist(ext2_dblist src,
1143 extern int ext2fs_dblist_count(ext2_dblist dblist);
1144 extern blk64_t ext2fs_dblist_count2(ext2_dblist dblist);
1145 extern errcode_t ext2fs_dblist_get_last(ext2_dblist dblist,
1146 struct ext2_db_entry **entry);
1147 extern errcode_t ext2fs_dblist_get_last2(ext2_dblist dblist,
1148 struct ext2_db_entry2 **entry);
1149 extern errcode_t ext2fs_dblist_drop_last(ext2_dblist dblist);
1153 ext2fs_dblist_dir_iterate(ext2_dblist dblist,
1156 int (*func)(ext2_ino_t dir,
1158 struct ext2_dir_entry *dirent,
1166 /* digest_encode.c */
1167 #define EXT2FS_DIGEST_SIZE EXT2FS_SHA256_LENGTH
1168 extern int ext2fs_digest_encode(const char *src, int len, char *dst);
1169 extern int ext2fs_digest_decode(const char *src, int len, char *dst);
1173 extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block,
1175 extern errcode_t ext2fs_read_dir_block2(ext2_filsys fs, blk_t block,
1176 void *buf, int flags);
1177 extern errcode_t ext2fs_read_dir_block3(ext2_filsys fs, blk64_t block,
1178 void *buf, int flags);
1179 extern errcode_t ext2fs_read_dir_block4(ext2_filsys fs, blk64_t block,
1180 void *buf, int flags, ext2_ino_t ino);
1181 extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block,
1183 extern errcode_t ext2fs_write_dir_block2(ext2_filsys fs, blk_t block,
1184 void *buf, int flags);
1185 extern errcode_t ext2fs_write_dir_block3(ext2_filsys fs, blk64_t block,
1186 void *buf, int flags);
1187 extern errcode_t ext2fs_write_dir_block4(ext2_filsys fs, blk64_t block,
1188 void *buf, int flags, ext2_ino_t ino);
1191 extern errcode_t ext2fs_dirhash(int version, const char *name, int len,
1193 ext2_dirhash_t *ret_hash,
1194 ext2_dirhash_t *ret_minor_hash);
1196 extern errcode_t ext2fs_dirhash2(int version, const char *name, int len,
1197 const struct ext2fs_nls_table *charset,
1200 ext2_dirhash_t *ret_hash,
1201 ext2_dirhash_t *ret_minor_hash);
1204 extern errcode_t ext2fs_get_rec_len(ext2_filsys fs,
1205 struct ext2_dir_entry *dirent,
1206 unsigned int *rec_len);
1207 extern errcode_t ext2fs_set_rec_len(ext2_filsys fs,
1209 struct ext2_dir_entry *dirent);
1210 extern errcode_t ext2fs_dir_iterate(ext2_filsys fs,
1214 int (*func)(struct ext2_dir_entry *dirent,
1220 extern errcode_t ext2fs_dir_iterate2(ext2_filsys fs,
1224 int (*func)(ext2_ino_t dir,
1226 struct ext2_dir_entry *dirent,
1234 extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest);
1237 extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir);
1240 extern __u32 ext2fs_ext_attr_hash_entry(struct ext2_ext_attr_entry *entry,
1242 extern errcode_t ext2fs_ext_attr_hash_entry2(ext2_filsys fs,
1243 struct ext2_ext_attr_entry *entry,
1244 void *data, __u32 *hash);
1245 extern errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf);
1246 extern errcode_t ext2fs_read_ext_attr2(ext2_filsys fs, blk64_t block,
1248 extern errcode_t ext2fs_read_ext_attr3(ext2_filsys fs, blk64_t block,
1249 void *buf, ext2_ino_t inum);
1250 extern errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block,
1252 extern errcode_t ext2fs_write_ext_attr2(ext2_filsys fs, blk64_t block,
1254 extern errcode_t ext2fs_write_ext_attr3(ext2_filsys fs, blk64_t block,
1255 void *buf, ext2_ino_t inum);
1256 extern errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk,
1258 int adjust, __u32 *newcount);
1259 extern errcode_t ext2fs_adjust_ea_refcount2(ext2_filsys fs, blk64_t blk,
1261 int adjust, __u32 *newcount);
1262 extern errcode_t ext2fs_adjust_ea_refcount3(ext2_filsys fs, blk64_t blk,
1264 int adjust, __u32 *newcount,
1266 errcode_t ext2fs_xattrs_write(struct ext2_xattr_handle *handle);
1267 errcode_t ext2fs_xattrs_read(struct ext2_xattr_handle *handle);
1268 errcode_t ext2fs_xattrs_iterate(struct ext2_xattr_handle *h,
1269 int (*func)(char *name, char *value,
1270 size_t value_len, void *data),
1272 errcode_t ext2fs_xattr_get(struct ext2_xattr_handle *h, const char *key,
1273 void **value, size_t *value_len);
1274 errcode_t ext2fs_xattr_set(struct ext2_xattr_handle *handle,
1278 errcode_t ext2fs_xattr_remove(struct ext2_xattr_handle *handle,
1280 errcode_t ext2fs_xattrs_open(ext2_filsys fs, ext2_ino_t ino,
1281 struct ext2_xattr_handle **handle);
1282 errcode_t ext2fs_xattrs_close(struct ext2_xattr_handle **handle);
1283 errcode_t ext2fs_free_ext_attr(ext2_filsys fs, ext2_ino_t ino,
1284 struct ext2_inode_large *inode);
1285 errcode_t ext2fs_xattrs_count(struct ext2_xattr_handle *handle, size_t *count);
1286 errcode_t ext2fs_xattr_inode_max_size(ext2_filsys fs, ext2_ino_t ino,
1288 #define XATTR_HANDLE_FLAG_RAW 0x0001
1289 errcode_t ext2fs_xattrs_flags(struct ext2_xattr_handle *handle,
1290 unsigned int *new_flags, unsigned int *old_flags);
1291 extern void ext2fs_ext_attr_block_rehash(struct ext2_ext_attr_header *header,
1292 struct ext2_ext_attr_entry *end);
1293 extern __u32 ext2fs_get_ea_inode_hash(struct ext2_inode *inode);
1294 extern void ext2fs_set_ea_inode_hash(struct ext2_inode *inode, __u32 hash);
1295 extern __u64 ext2fs_get_ea_inode_ref(struct ext2_inode *inode);
1296 extern void ext2fs_set_ea_inode_ref(struct ext2_inode *inode, __u64 ref_count);
1299 extern errcode_t ext2fs_extent_header_verify(void *ptr, int size);
1300 extern errcode_t ext2fs_extent_open(ext2_filsys fs, ext2_ino_t ino,
1301 ext2_extent_handle_t *handle);
1302 extern errcode_t ext2fs_extent_open2(ext2_filsys fs, ext2_ino_t ino,
1303 struct ext2_inode *inode,
1304 ext2_extent_handle_t *ret_handle);
1305 extern void ext2fs_extent_free(ext2_extent_handle_t handle);
1306 extern errcode_t ext2fs_extent_get(ext2_extent_handle_t handle,
1307 int flags, struct ext2fs_extent *extent);
1308 extern errcode_t ext2fs_extent_node_split(ext2_extent_handle_t handle);
1309 extern errcode_t ext2fs_extent_replace(ext2_extent_handle_t handle, int flags,
1310 struct ext2fs_extent *extent);
1311 extern errcode_t ext2fs_extent_insert(ext2_extent_handle_t handle, int flags,
1312 struct ext2fs_extent *extent);
1313 extern errcode_t ext2fs_extent_set_bmap(ext2_extent_handle_t handle,
1314 blk64_t logical, blk64_t physical,
1316 extern errcode_t ext2fs_extent_delete(ext2_extent_handle_t handle, int flags);
1317 extern errcode_t ext2fs_extent_get_info(ext2_extent_handle_t handle,
1318 struct ext2_extent_info *info);
1319 extern errcode_t ext2fs_extent_goto(ext2_extent_handle_t handle,
1321 extern errcode_t ext2fs_extent_goto2(ext2_extent_handle_t handle,
1322 int leaf_level, blk64_t blk);
1323 extern errcode_t ext2fs_extent_fix_parents(ext2_extent_handle_t handle);
1324 extern size_t ext2fs_max_extent_depth(ext2_extent_handle_t handle);
1325 extern errcode_t ext2fs_fix_extents_checksums(ext2_filsys fs, ext2_ino_t ino,
1326 struct ext2_inode *inode);
1329 #define EXT2_FALLOCATE_ZERO_BLOCKS (0x1)
1330 #define EXT2_FALLOCATE_FORCE_INIT (0x2)
1331 #define EXT2_FALLOCATE_FORCE_UNINIT (0x4)
1332 #define EXT2_FALLOCATE_INIT_BEYOND_EOF (0x8)
1333 #define EXT2_FALLOCATE_ALL_FLAGS (0xF)
1334 errcode_t ext2fs_fallocate(ext2_filsys fs, int flags, ext2_ino_t ino,
1335 struct ext2_inode *inode, blk64_t goal,
1336 blk64_t start, blk64_t len);
1339 extern errcode_t ext2fs_file_open2(ext2_filsys fs, ext2_ino_t ino,
1340 struct ext2_inode *inode,
1341 int flags, ext2_file_t *ret);
1342 extern errcode_t ext2fs_file_open(ext2_filsys fs, ext2_ino_t ino,
1343 int flags, ext2_file_t *ret);
1344 extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file);
1345 struct ext2_inode *ext2fs_file_get_inode(ext2_file_t file);
1346 extern ext2_ino_t ext2fs_file_get_inode_num(ext2_file_t file);
1347 extern errcode_t ext2fs_file_close(ext2_file_t file);
1348 extern errcode_t ext2fs_file_flush(ext2_file_t file);
1349 extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf,
1350 unsigned int wanted, unsigned int *got);
1351 extern errcode_t ext2fs_file_write(ext2_file_t file, const void *buf,
1352 unsigned int nbytes, unsigned int *written);
1353 extern errcode_t ext2fs_file_llseek(ext2_file_t file, __u64 offset,
1354 int whence, __u64 *ret_pos);
1355 extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset,
1356 int whence, ext2_off_t *ret_pos);
1357 errcode_t ext2fs_file_get_lsize(ext2_file_t file, __u64 *ret_size);
1358 extern ext2_off_t ext2fs_file_get_size(ext2_file_t file);
1359 extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size);
1360 extern errcode_t ext2fs_file_set_size2(ext2_file_t file, ext2_off64_t size);
1363 extern char *ext2fs_find_block_device(dev_t device);
1366 extern errcode_t ext2fs_sync_device(int fd, int flushb);
1369 extern void ext2fs_free(ext2_filsys fs);
1370 extern void ext2fs_free_dblist(ext2_dblist dblist);
1371 extern void ext2fs_badblocks_list_free(ext2_badblocks_list bb);
1372 extern void ext2fs_u32_list_free(ext2_u32_list bb);
1375 extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap);
1376 extern errcode_t ext2fs_make_generic_bitmap(errcode_t magic, ext2_filsys fs,
1377 __u32 start, __u32 end,
1379 const char *descr, char *init_map,
1380 ext2fs_generic_bitmap *ret);
1381 extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start,
1385 ext2fs_generic_bitmap *ret);
1386 extern errcode_t ext2fs_copy_generic_bitmap(ext2fs_generic_bitmap src,
1387 ext2fs_generic_bitmap *dest);
1388 extern void ext2fs_clear_generic_bitmap(ext2fs_generic_bitmap bitmap);
1389 extern errcode_t ext2fs_fudge_generic_bitmap_end(ext2fs_inode_bitmap bitmap,
1394 extern void ext2fs_set_generic_bitmap_padding(ext2fs_generic_bitmap map);
1395 extern errcode_t ext2fs_resize_generic_bitmap(errcode_t magic,
1398 ext2fs_generic_bitmap bmap);
1399 extern errcode_t ext2fs_compare_generic_bitmap(errcode_t magic, errcode_t neq,
1400 ext2fs_generic_bitmap bm1,
1401 ext2fs_generic_bitmap bm2);
1402 extern errcode_t ext2fs_get_generic_bitmap_range(ext2fs_generic_bitmap bmap,
1404 __u32 start, __u32 num,
1406 extern errcode_t ext2fs_set_generic_bitmap_range(ext2fs_generic_bitmap bmap,
1408 __u32 start, __u32 num,
1410 extern errcode_t ext2fs_find_first_zero_generic_bitmap(ext2fs_generic_bitmap bitmap,
1411 __u32 start, __u32 end,
1413 extern errcode_t ext2fs_find_first_set_generic_bitmap(ext2fs_generic_bitmap bitmap,
1414 __u32 start, __u32 end,
1417 /* gen_bitmap64.c */
1418 void ext2fs_free_generic_bmap(ext2fs_generic_bitmap bmap);
1419 errcode_t ext2fs_alloc_generic_bmap(ext2_filsys fs, errcode_t magic,
1420 int type, __u64 start, __u64 end,
1423 ext2fs_generic_bitmap *ret);
1424 errcode_t ext2fs_copy_generic_bmap(ext2fs_generic_bitmap src,
1425 ext2fs_generic_bitmap *dest);
1426 void ext2fs_clear_generic_bmap(ext2fs_generic_bitmap bitmap);
1427 errcode_t ext2fs_fudge_generic_bmap_end(ext2fs_generic_bitmap bitmap,
1429 __u64 end, __u64 *oend);
1430 void ext2fs_set_generic_bmap_padding(ext2fs_generic_bitmap bmap);
1431 errcode_t ext2fs_resize_generic_bmap(ext2fs_generic_bitmap bmap,
1433 __u64 new_real_end);
1434 errcode_t ext2fs_compare_generic_bmap(errcode_t neq,
1435 ext2fs_generic_bitmap bm1,
1436 ext2fs_generic_bitmap bm2);
1437 errcode_t ext2fs_get_generic_bmap_range(ext2fs_generic_bitmap bmap,
1438 __u64 start, unsigned int num,
1440 errcode_t ext2fs_set_generic_bmap_range(ext2fs_generic_bitmap bmap,
1441 __u64 start, unsigned int num,
1443 errcode_t ext2fs_convert_subcluster_bitmap(ext2_filsys fs,
1444 ext2fs_block_bitmap *bitmap);
1446 /* get_num_dirs.c */
1447 extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs);
1450 extern errcode_t ext2fs_get_device_size(const char *file, int blocksize,
1452 extern errcode_t ext2fs_get_device_size2(const char *file, int blocksize,
1453 blk64_t *retblocks);
1456 extern int ext2fs_get_dio_alignment(int fd);
1457 errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize);
1458 errcode_t ext2fs_get_device_phys_sectsize(const char *file, int *sectsize);
1461 errcode_t ext2fs_iblk_add_blocks(ext2_filsys fs, struct ext2_inode *inode,
1462 blk64_t num_blocks);
1463 errcode_t ext2fs_iblk_sub_blocks(ext2_filsys fs, struct ext2_inode *inode,
1464 blk64_t num_blocks);
1465 errcode_t ext2fs_iblk_set(ext2_filsys fs, struct ext2_inode *inode, blk64_t b);
1468 extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags);
1469 extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags);
1470 extern errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd, int flags);
1471 extern errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd, int flags);
1472 extern errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags);
1473 extern errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags);
1476 errcode_t ext2fs_read_ind_block(ext2_filsys fs, blk_t blk, void *buf);
1477 errcode_t ext2fs_write_ind_block(ext2_filsys fs, blk_t blk, void *buf);
1480 extern errcode_t ext2fs_initialize(const char *name, int flags,
1481 struct ext2_super_block *param,
1482 io_manager manager, ext2_filsys *ret_fs);
1485 extern void ext2fs_free_icount(ext2_icount_t icount);
1486 extern errcode_t ext2fs_create_icount_tdb(ext2_filsys fs, char *tdb_dir,
1487 int flags, ext2_icount_t *ret);
1488 extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags,
1490 ext2_icount_t hint, ext2_icount_t *ret);
1491 extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags,
1493 ext2_icount_t *ret);
1494 extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ext2_ino_t ino,
1496 extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ext2_ino_t ino,
1498 extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ext2_ino_t ino,
1500 extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ext2_ino_t ino,
1502 extern ext2_ino_t ext2fs_get_icount_size(ext2_icount_t icount);
1503 errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *);
1507 extern errcode_t ext2fs_get_memalign(unsigned long size,
1508 unsigned long align, void *ptr);
1511 extern errcode_t ext2fs_inline_data_init(ext2_filsys fs, ext2_ino_t ino);
1512 extern errcode_t ext2fs_inline_data_size(ext2_filsys fs, ext2_ino_t ino,
1514 extern errcode_t ext2fs_inline_data_get(ext2_filsys fs, ext2_ino_t ino,
1515 struct ext2_inode *inode,
1516 void *buf, size_t *size);
1517 extern errcode_t ext2fs_inline_data_set(ext2_filsys fs, ext2_ino_t ino,
1518 struct ext2_inode *inode,
1519 void *buf, size_t size);
1522 extern errcode_t ext2fs_create_inode_cache(ext2_filsys fs,
1523 unsigned int cache_size);
1524 extern void ext2fs_free_inode_cache(struct ext2_inode_cache *icache);
1525 extern errcode_t ext2fs_flush_icache(ext2_filsys fs);
1526 extern errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan,
1528 struct ext2_inode *inode,
1530 #define EXT2_INODE_SCAN_DEFAULT_BUFFER_BLOCKS 8
1531 extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks,
1532 ext2_inode_scan *ret_scan);
1533 extern void ext2fs_close_inode_scan(ext2_inode_scan scan);
1534 extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino,
1535 struct ext2_inode *inode);
1536 extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan,
1538 extern void ext2fs_set_inode_callback
1539 (ext2_inode_scan scan,
1540 errcode_t (*done_group)(ext2_filsys fs,
1541 ext2_inode_scan scan,
1544 void *done_group_data);
1545 extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags,
1547 extern errcode_t ext2fs_read_inode_full(ext2_filsys fs, ext2_ino_t ino,
1548 struct ext2_inode * inode,
1550 extern errcode_t ext2fs_read_inode(ext2_filsys fs, ext2_ino_t ino,
1551 struct ext2_inode * inode);
1552 extern errcode_t ext2fs_read_inode2(ext2_filsys fs, ext2_ino_t ino,
1553 struct ext2_inode * inode,
1554 int bufsize, int flags);
1555 extern errcode_t ext2fs_write_inode_full(ext2_filsys fs, ext2_ino_t ino,
1556 struct ext2_inode * inode,
1558 extern errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino,
1559 struct ext2_inode * inode);
1560 extern errcode_t ext2fs_write_inode2(ext2_filsys fs, ext2_ino_t ino,
1561 struct ext2_inode * inode,
1562 int bufsize, int flags);
1563 extern errcode_t ext2fs_write_new_inode(ext2_filsys fs, ext2_ino_t ino,
1564 struct ext2_inode * inode);
1565 extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks);
1566 extern errcode_t ext2fs_check_directory(ext2_filsys fs, ext2_ino_t ino);
1569 extern io_manager inode_io_manager;
1570 extern errcode_t ext2fs_inode_io_intern(ext2_filsys fs, ext2_ino_t ino,
1572 extern errcode_t ext2fs_inode_io_intern2(ext2_filsys fs, ext2_ino_t ino,
1573 struct ext2_inode *inode,
1577 extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags);
1578 extern errcode_t ext2fs_check_mount_point(const char *device, int *mount_flags,
1579 char *mtpt, int mtlen);
1583 * NOTE: This function removes from an inode the blocks "start", "end", and
1584 * every block in between.
1586 extern errcode_t ext2fs_punch(ext2_filsys fs, ext2_ino_t ino,
1587 struct ext2_inode *inode,
1588 char *block_buf, blk64_t start,
1592 extern errcode_t ext2fs_lookup(ext2_filsys fs, ext2_ino_t dir, const char *name,
1593 int namelen, char *buf, ext2_ino_t *inode);
1594 extern errcode_t ext2fs_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
1595 const char *name, ext2_ino_t *inode);
1596 errcode_t ext2fs_namei_follow(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
1597 const char *name, ext2_ino_t *inode);
1598 extern errcode_t ext2fs_follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
1599 ext2_ino_t inode, ext2_ino_t *res_inode);
1602 int ext2fs_native_flag(void);
1605 extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino,
1606 ext2_ino_t parent_ino, char **block);
1607 extern errcode_t ext2fs_new_dir_inline_data(ext2_filsys fs, ext2_ino_t dir_ino,
1608 ext2_ino_t parent_ino, __u32 *iblock);
1611 extern const struct ext2fs_nls_table *ext2fs_load_nls_table(int encoding);
1614 extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum,
1618 extern errcode_t ext2fs_zero_blocks(ext2_filsys fs, blk_t blk, int num,
1619 blk_t *ret_blk, int *ret_count);
1620 extern errcode_t ext2fs_zero_blocks2(ext2_filsys fs, blk64_t blk, int num,
1621 blk64_t *ret_blk, int *ret_count);
1622 extern errcode_t ext2fs_create_journal_superblock(ext2_filsys fs,
1623 __u32 num_blocks, int flags,
1625 extern errcode_t ext2fs_add_journal_device(ext2_filsys fs,
1626 ext2_filsys journal_dev);
1627 extern errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t num_blocks,
1629 extern errcode_t ext2fs_add_journal_inode2(ext2_filsys fs, blk_t num_blocks,
1630 blk64_t goal, int flags);
1631 extern int ext2fs_default_journal_size(__u64 num_blocks);
1632 extern int ext2fs_journal_sb_start(int blocksize);
1635 extern errcode_t ext2fs_open(const char *name, int flags, int superblock,
1636 unsigned int block_size, io_manager manager,
1637 ext2_filsys *ret_fs);
1638 extern errcode_t ext2fs_open2(const char *name, const char *io_options,
1639 int flags, int superblock,
1640 unsigned int block_size, io_manager manager,
1641 ext2_filsys *ret_fs);
1643 * The dgrp_t argument to these two functions is not actually a group number
1644 * but a block number offset within a group table! Convert with the formula
1645 * (group_number / groups_per_block).
1647 extern blk64_t ext2fs_descriptor_block_loc2(ext2_filsys fs,
1648 blk64_t group_block, dgrp_t i);
1649 extern blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block,
1651 errcode_t ext2fs_get_data_io(ext2_filsys fs, io_channel *old_io);
1652 errcode_t ext2fs_set_data_io(ext2_filsys fs, io_channel new_io);
1653 errcode_t ext2fs_rewrite_to_io(ext2_filsys fs, io_channel new_io);
1655 /* get_pathname.c */
1656 extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino,
1660 errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name,
1661 ext2_ino_t ino, int flags);
1662 errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir, const char *name,
1663 ext2_ino_t ino, int flags);
1666 errcode_t ext2fs_symlink(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t ino,
1667 const char *name, const char *target);
1668 int ext2fs_is_fast_symlink(struct ext2_inode *inode);
1671 errcode_t ext2fs_mmp_read(ext2_filsys fs, blk64_t mmp_blk, void *buf);
1672 errcode_t ext2fs_mmp_write(ext2_filsys fs, blk64_t mmp_blk, void *buf);
1673 errcode_t ext2fs_mmp_clear(ext2_filsys fs);
1674 errcode_t ext2fs_mmp_init(ext2_filsys fs);
1675 errcode_t ext2fs_mmp_start(ext2_filsys fs);
1676 errcode_t ext2fs_mmp_update(ext2_filsys fs);
1677 errcode_t ext2fs_mmp_update2(ext2_filsys fs, int immediately);
1678 errcode_t ext2fs_mmp_stop(ext2_filsys fs);
1679 unsigned ext2fs_mmp_new_seq(void);
1682 extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs,
1683 ext2_badblocks_list *bb_list);
1685 /* read_bb_file.c */
1686 extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f,
1687 ext2_badblocks_list *bb_list,
1689 void (*invalid)(ext2_filsys fs,
1693 extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f,
1694 ext2_badblocks_list *bb_list,
1695 void (*invalid)(ext2_filsys fs,
1699 extern errcode_t ext2fs_create_resize_inode(ext2_filsys fs);
1702 #define EXT2FS_SHA256_LENGTH 32
1704 extern void ext2fs_sha256(const unsigned char *in, unsigned long in_size,
1705 unsigned char out[EXT2FS_SHA256_LENGTH]);
1709 #define EXT2FS_SHA512_LENGTH 64
1710 extern void ext2fs_sha512(const unsigned char *in, unsigned long in_size,
1711 unsigned char out[EXT2FS_SHA512_LENGTH]);
1714 extern errcode_t ext2fs_dirent_swab_in2(ext2_filsys fs, char *buf, size_t size,
1716 extern errcode_t ext2fs_dirent_swab_in(ext2_filsys fs, char *buf, int flags);
1717 extern errcode_t ext2fs_dirent_swab_out2(ext2_filsys fs, char *buf, size_t size,
1719 extern errcode_t ext2fs_dirent_swab_out(ext2_filsys fs, char *buf, int flags);
1720 extern void ext2fs_swap_ext_attr(char *to, char *from, int bufsize,
1722 extern void ext2fs_swap_ext_attr_header(struct ext2_ext_attr_header *to_header,
1723 struct ext2_ext_attr_header *from_hdr);
1724 extern void ext2fs_swap_ext_attr_entry(struct ext2_ext_attr_entry *to_entry,
1725 struct ext2_ext_attr_entry *from_entry);
1726 extern void ext2fs_swap_super(struct ext2_super_block * super);
1727 extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp);
1728 extern void ext2fs_swap_group_desc2(ext2_filsys, struct ext2_group_desc *gdp);
1729 extern void ext2fs_swap_inode_full(ext2_filsys fs, struct ext2_inode_large *t,
1730 struct ext2_inode_large *f, int hostorder,
1732 extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t,
1733 struct ext2_inode *f, int hostorder);
1734 extern void ext2fs_swap_mmp(struct mmp_struct *mmp);
1737 extern int ext2fs_open_file(const char *pathname, int flags, mode_t mode);
1738 extern int ext2fs_stat(const char *path, ext2fs_struct_stat *buf);
1739 extern int ext2fs_fstat(int fd, ext2fs_struct_stat *buf);
1742 extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode);
1743 extern int ext2fs_inode_has_valid_blocks2(ext2_filsys fs,
1744 struct ext2_inode *inode);
1747 extern int ext2fs_parse_version_string(const char *ver_string);
1748 extern int ext2fs_get_library_version(const char **ver_string,
1749 const char **date_string);
1751 /* write_bb_file.c */
1752 extern errcode_t ext2fs_write_bb_FILE(ext2_badblocks_list bb_list,
1757 /* inline functions */
1758 #ifdef NO_INLINE_FUNCS
1759 extern errcode_t ext2fs_get_mem(unsigned long size, void *ptr);
1760 extern errcode_t ext2fs_get_memzero(unsigned long size, void *ptr);
1761 extern errcode_t ext2fs_get_array(unsigned long count,
1762 unsigned long size, void *ptr);
1763 extern errcode_t ext2fs_get_arrayzero(unsigned long count,
1764 unsigned long size, void *ptr);
1765 extern errcode_t ext2fs_free_mem(void *ptr);
1766 extern errcode_t ext2fs_resize_mem(unsigned long old_size,
1767 unsigned long size, void *ptr);
1768 extern void ext2fs_mark_super_dirty(ext2_filsys fs);
1769 extern void ext2fs_mark_changed(ext2_filsys fs);
1770 extern int ext2fs_test_changed(ext2_filsys fs);
1771 extern void ext2fs_mark_valid(ext2_filsys fs);
1772 extern void ext2fs_unmark_valid(ext2_filsys fs);
1773 extern int ext2fs_test_valid(ext2_filsys fs);
1774 extern void ext2fs_mark_ib_dirty(ext2_filsys fs);
1775 extern void ext2fs_mark_bb_dirty(ext2_filsys fs);
1776 extern int ext2fs_test_ib_dirty(ext2_filsys fs);
1777 extern int ext2fs_test_bb_dirty(ext2_filsys fs);
1778 extern dgrp_t ext2fs_group_of_blk(ext2_filsys fs, blk_t blk);
1779 extern dgrp_t ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino);
1780 extern blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group);
1781 extern blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group);
1782 extern blk_t ext2fs_inode_data_blocks(ext2_filsys fs,
1783 struct ext2_inode *inode);
1784 extern int ext2fs_htree_intnode_maxrecs(ext2_filsys fs, int blocks);
1785 extern unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b);
1786 extern __u64 ext2fs_div64_ceil(__u64 a, __u64 b);
1787 extern int ext2fs_dirent_name_len(const struct ext2_dir_entry *entry);
1788 extern void ext2fs_dirent_set_name_len(struct ext2_dir_entry *entry, int len);
1789 extern int ext2fs_dirent_file_type(const struct ext2_dir_entry *entry);
1790 extern void ext2fs_dirent_set_file_type(struct ext2_dir_entry *entry, int type);
1791 extern struct ext2_inode *ext2fs_inode(struct ext2_inode_large * large_inode);
1792 extern const struct ext2_inode *ext2fs_const_inode(const struct ext2_inode_large * large_inode);
1797 * The actual inlined functions definitions themselves...
1799 * If NO_INLINE_FUNCS is defined, then we won't try to do inline
1802 #if (defined(INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS))
1803 #ifdef INCLUDE_INLINE_FUNCS
1804 #define _INLINE_ extern
1806 #if (__STDC_VERSION__ >= 199901L)
1807 #define _INLINE_ inline
1810 #define _INLINE_ extern __inline__
1811 #else /* For Watcom C */
1812 #define _INLINE_ extern inline
1813 #endif /* __GNUC__ */
1814 #endif /* __STDC_VERSION__ >= 199901L */
1817 #ifndef EXT2_CUSTOM_MEMORY_ROUTINES
1820 * Allocate memory. The 'ptr' arg must point to a pointer.
1822 _INLINE_ errcode_t ext2fs_get_mem(unsigned long size, void *ptr)
1828 return EXT2_ET_NO_MEMORY;
1829 memcpy(ptr, &pp, sizeof (pp));
1833 _INLINE_ errcode_t ext2fs_get_memzero(unsigned long size, void *ptr)
1839 return EXT2_ET_NO_MEMORY;
1840 memset(pp, 0, size);
1841 memcpy(ptr, &pp, sizeof(pp));
1845 _INLINE_ errcode_t ext2fs_get_array(unsigned long count, unsigned long size, void *ptr)
1847 if (count && (~0UL)/count < size)
1848 return EXT2_ET_NO_MEMORY;
1849 return ext2fs_get_mem(count*size, ptr);
1852 _INLINE_ errcode_t ext2fs_get_arrayzero(unsigned long count,
1853 unsigned long size, void *ptr)
1857 if (count && (~0UL)/count < size)
1858 return EXT2_ET_NO_MEMORY;
1859 pp = calloc(count, size);
1861 return EXT2_ET_NO_MEMORY;
1862 memcpy(ptr, &pp, sizeof(pp));
1867 * Free memory. The 'ptr' arg must point to a pointer.
1869 _INLINE_ errcode_t ext2fs_free_mem(void *ptr)
1873 memcpy(&p, ptr, sizeof(p));
1876 memcpy(ptr, &p, sizeof(p));
1881 * Resize memory. The 'ptr' arg must point to a pointer.
1883 _INLINE_ errcode_t ext2fs_resize_mem(unsigned long EXT2FS_ATTR((unused)) old_size,
1884 unsigned long size, void *ptr)
1888 /* Use "memcpy" for pointer assignments here to avoid problems
1889 * with C99 strict type aliasing rules. */
1890 memcpy(&p, ptr, sizeof(p));
1891 p = realloc(p, size);
1893 return EXT2_ET_NO_MEMORY;
1894 memcpy(ptr, &p, sizeof(p));
1897 #endif /* Custom memory routines */
1900 * Mark a filesystem superblock as dirty
1902 _INLINE_ void ext2fs_mark_super_dirty(ext2_filsys fs)
1904 fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_CHANGED;
1908 * Mark a filesystem as changed
1910 _INLINE_ void ext2fs_mark_changed(ext2_filsys fs)
1912 fs->flags |= EXT2_FLAG_CHANGED;
1916 * Check to see if a filesystem has changed
1918 _INLINE_ int ext2fs_test_changed(ext2_filsys fs)
1920 return (fs->flags & EXT2_FLAG_CHANGED);
1924 * Mark a filesystem as valid
1926 _INLINE_ void ext2fs_mark_valid(ext2_filsys fs)
1928 fs->flags |= EXT2_FLAG_VALID;
1932 * Mark a filesystem as NOT valid
1934 _INLINE_ void ext2fs_unmark_valid(ext2_filsys fs)
1936 fs->flags &= ~EXT2_FLAG_VALID;
1940 * Check to see if a filesystem is valid
1942 _INLINE_ int ext2fs_test_valid(ext2_filsys fs)
1944 return (fs->flags & EXT2_FLAG_VALID);
1948 * Mark the inode bitmap as dirty
1950 _INLINE_ void ext2fs_mark_ib_dirty(ext2_filsys fs)
1952 fs->flags |= EXT2_FLAG_IB_DIRTY | EXT2_FLAG_CHANGED;
1956 * Mark the block bitmap as dirty
1958 _INLINE_ void ext2fs_mark_bb_dirty(ext2_filsys fs)
1960 fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_CHANGED;
1964 * Check to see if a filesystem's inode bitmap is dirty
1966 _INLINE_ int ext2fs_test_ib_dirty(ext2_filsys fs)
1968 return (fs->flags & EXT2_FLAG_IB_DIRTY);
1972 * Check to see if a filesystem's block bitmap is dirty
1974 _INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs)
1976 return (fs->flags & EXT2_FLAG_BB_DIRTY);
1980 * Return the group # of a block
1982 _INLINE_ dgrp_t ext2fs_group_of_blk(ext2_filsys fs, blk_t blk)
1984 return ext2fs_group_of_blk2(fs, blk);
1987 * Return the group # of an inode number
1989 _INLINE_ dgrp_t ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino)
1991 return (ino - 1) / fs->super->s_inodes_per_group;
1995 * Return the first block (inclusive) in a group
1997 _INLINE_ blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group)
1999 return (blk_t) ext2fs_group_first_block2(fs, group);
2003 * Return the last block (inclusive) in a group
2005 _INLINE_ blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group)
2007 return (blk_t) ext2fs_group_last_block2(fs, group);
2010 _INLINE_ blk_t ext2fs_inode_data_blocks(ext2_filsys fs,
2011 struct ext2_inode *inode)
2013 return (blk_t) ext2fs_inode_data_blocks2(fs, inode);
2016 _INLINE_ int ext2fs_htree_intnode_maxrecs(ext2_filsys fs, int blocks)
2018 return blocks * ((fs->blocksize - 8) / sizeof(struct ext2_dx_entry));
2022 * This is an efficient, overflow safe way of calculating ceil((1.0 * a) / b)
2024 _INLINE_ unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b)
2028 return ((a - 1) / b) + 1;
2031 _INLINE_ __u64 ext2fs_div64_ceil(__u64 a, __u64 b)
2035 return ((a - 1) / b) + 1;
2038 _INLINE_ int ext2fs_dirent_name_len(const struct ext2_dir_entry *entry)
2040 return entry->name_len & 0xff;
2043 _INLINE_ void ext2fs_dirent_set_name_len(struct ext2_dir_entry *entry, int len)
2045 entry->name_len = (entry->name_len & 0xff00) | (len & 0xff);
2048 _INLINE_ int ext2fs_dirent_file_type(const struct ext2_dir_entry *entry)
2050 return entry->name_len >> 8;
2053 _INLINE_ void ext2fs_dirent_set_file_type(struct ext2_dir_entry *entry, int type)
2055 entry->name_len = (entry->name_len & 0xff) | (type << 8);
2058 _INLINE_ struct ext2_inode *ext2fs_inode(struct ext2_inode_large * large_inode)
2060 /* It is always safe to convert large inode to a small inode */
2061 return (struct ext2_inode *) large_inode;
2064 _INLINE_ const struct ext2_inode *
2065 ext2fs_const_inode(const struct ext2_inode_large * large_inode)
2067 /* It is always safe to convert large inode to a small inode */
2068 return (const struct ext2_inode *) large_inode;
2074 /* htree levels for ext4 */
2075 #define EXT4_HTREE_LEVEL_COMPAT 2
2076 #define EXT4_HTREE_LEVEL 3
2078 static inline unsigned int ext2_dir_htree_level(ext2_filsys fs)
2080 if (ext2fs_has_feature_largedir(fs->super))
2081 return EXT4_HTREE_LEVEL;
2083 return EXT4_HTREE_LEVEL_COMPAT;
2090 #endif /* _EXT2FS_EXT2FS_H */