1/* vi: set sw=4 ts=4: */ 2/* 3 * ext2fs.h --- ext2fs 4 * 5 * Copyright (C) 1993, 1994, 1995, 1996 Theodore Ts'o. 6 * 7 * %Begin-Header% 8 * This file may be redistributed under the terms of the GNU Public 9 * License. 10 * %End-Header% 11 */ 12#ifndef EXT2FS_EXT2FS_H 13#define EXT2FS_EXT2FS_H 1 14 15 16#ifdef __GNUC__ 17# define EXT2FS_ATTR(x) __attribute__(x) 18#else 19# define EXT2FS_ATTR(x) 20#endif 21 22#ifdef __cplusplus 23extern "C" { 24#endif 25 26/* 27 * Where the master copy of the superblock is located, and how big 28 * superblocks are supposed to be. We define SUPERBLOCK_SIZE because 29 * the size of the superblock structure is not necessarily trustworthy 30 * (some versions have the padding set up so that the superblock is 31 * 1032 bytes long). 32 */ 33#define SUPERBLOCK_OFFSET 1024 34#define SUPERBLOCK_SIZE 1024 35 36/* 37 * The last ext2fs revision level that this version of the library is 38 * able to support. 39 */ 40#define EXT2_LIB_CURRENT_REV EXT2_DYNAMIC_REV 41 42#ifdef HAVE_SYS_TYPES_H 43#include <sys/types.h> 44#endif 45 46#include <stdio.h> 47#include <stdlib.h> 48 49#include "../e2fsbb.h" 50#include "ext2_types.h" 51#include "ext2_fs.h" 52 53typedef __u32 ext2_ino_t; 54typedef __u32 blk_t; 55typedef __u32 dgrp_t; 56typedef __u32 ext2_off_t; 57typedef __s64 e2_blkcnt_t; 58typedef __u32 ext2_dirhash_t; 59 60#include "ext2_io.h" 61#include "ext2_err.h" 62 63typedef struct struct_ext2_filsys *ext2_filsys; 64 65struct ext2fs_struct_generic_bitmap { 66 errcode_t magic; 67 ext2_filsys fs; 68 __u32 start, end; 69 __u32 real_end; 70 char * description; 71 char * bitmap; 72 errcode_t base_error_code; 73 __u32 reserved[7]; 74}; 75 76#define EXT2FS_MARK_ERROR 0 77#define EXT2FS_UNMARK_ERROR 1 78#define EXT2FS_TEST_ERROR 2 79 80typedef struct ext2fs_struct_generic_bitmap *ext2fs_generic_bitmap; 81typedef struct ext2fs_struct_generic_bitmap *ext2fs_inode_bitmap; 82typedef struct ext2fs_struct_generic_bitmap *ext2fs_block_bitmap; 83 84#define EXT2_FIRST_INODE(s) EXT2_FIRST_INO(s) 85 86/* 87 * badblocks list definitions 88 */ 89 90typedef struct ext2_struct_u32_list *ext2_badblocks_list; 91typedef struct ext2_struct_u32_iterate *ext2_badblocks_iterate; 92 93typedef struct ext2_struct_u32_list *ext2_u32_list; 94typedef struct ext2_struct_u32_iterate *ext2_u32_iterate; 95 96/* old */ 97typedef struct ext2_struct_u32_list *badblocks_list; 98typedef struct ext2_struct_u32_iterate *badblocks_iterate; 99 100#define BADBLOCKS_FLAG_DIRTY 1 101 102/* 103 * ext2_dblist structure and abstractions (see dblist.c) 104 */ 105struct ext2_db_entry { 106 ext2_ino_t ino; 107 blk_t blk; 108 int blockcnt; 109}; 110 111typedef struct ext2_struct_dblist *ext2_dblist; 112 113#define DBLIST_ABORT 1 114 115/* 116 * ext2_fileio definitions 117 */ 118 119#define EXT2_FILE_WRITE 0x0001 120#define EXT2_FILE_CREATE 0x0002 121 122#define EXT2_FILE_MASK 0x00FF 123 124#define EXT2_FILE_BUF_DIRTY 0x4000 125#define EXT2_FILE_BUF_VALID 0x2000 126 127typedef struct ext2_file *ext2_file_t; 128 129#define EXT2_SEEK_SET 0 130#define EXT2_SEEK_CUR 1 131#define EXT2_SEEK_END 2 132 133/* 134 * Flags for the ext2_filsys structure and for ext2fs_open() 135 */ 136#define EXT2_FLAG_RW 0x01 137#define EXT2_FLAG_CHANGED 0x02 138#define EXT2_FLAG_DIRTY 0x04 139#define EXT2_FLAG_VALID 0x08 140#define EXT2_FLAG_IB_DIRTY 0x10 141#define EXT2_FLAG_BB_DIRTY 0x20 142#define EXT2_FLAG_SWAP_BYTES 0x40 143#define EXT2_FLAG_SWAP_BYTES_READ 0x80 144#define EXT2_FLAG_SWAP_BYTES_WRITE 0x100 145#define EXT2_FLAG_MASTER_SB_ONLY 0x200 146#define EXT2_FLAG_FORCE 0x400 147#define EXT2_FLAG_SUPER_ONLY 0x800 148#define EXT2_FLAG_JOURNAL_DEV_OK 0x1000 149#define EXT2_FLAG_IMAGE_FILE 0x2000 150 151/* 152 * Special flag in the ext2 inode i_flag field that means that this is 153 * a new inode. (So that ext2_write_inode() can clear extra fields.) 154 */ 155#define EXT2_NEW_INODE_FL 0x80000000 156 157/* 158 * Flags for mkjournal 159 * 160 * EXT2_MKJOURNAL_V1_SUPER Make a (deprecated) V1 journal superblock 161 */ 162#define EXT2_MKJOURNAL_V1_SUPER 0x0000001 163 164struct struct_ext2_filsys { 165 errcode_t magic; 166 io_channel io; 167 int flags; 168 char * device_name; 169 struct ext2_super_block * super; 170 unsigned int blocksize; 171 int fragsize; 172 dgrp_t group_desc_count; 173 unsigned long desc_blocks; 174 struct ext2_group_desc * group_desc; 175 int inode_blocks_per_group; 176 ext2fs_inode_bitmap inode_map; 177 ext2fs_block_bitmap block_map; 178 errcode_t (*get_blocks)(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); 179 errcode_t (*check_directory)(ext2_filsys fs, ext2_ino_t ino); 180 errcode_t (*write_bitmaps)(ext2_filsys fs); 181 errcode_t (*read_inode)(ext2_filsys fs, ext2_ino_t ino, 182 struct ext2_inode *inode); 183 errcode_t (*write_inode)(ext2_filsys fs, ext2_ino_t ino, 184 struct ext2_inode *inode); 185 ext2_badblocks_list badblocks; 186 ext2_dblist dblist; 187 __u32 stride; /* for mke2fs */ 188 struct ext2_super_block * orig_super; 189 struct ext2_image_hdr * image_header; 190 __u32 umask; 191 /* 192 * Reserved for future expansion 193 */ 194 __u32 reserved[8]; 195 196 /* 197 * Reserved for the use of the calling application. 198 */ 199 void * priv_data; 200 201 /* 202 * Inode cache 203 */ 204 struct ext2_inode_cache *icache; 205 io_channel image_io; 206}; 207 208#include "bitops.h" 209 210/* 211 * Return flags for the block iterator functions 212 */ 213#define BLOCK_CHANGED 1 214#define BLOCK_ABORT 2 215#define BLOCK_ERROR 4 216 217/* 218 * Block interate flags 219 * 220 * BLOCK_FLAG_APPEND, or BLOCK_FLAG_HOLE, indicates that the interator 221 * function should be called on blocks where the block number is zero. 222 * This is used by ext2fs_expand_dir() to be able to add a new block 223 * to an inode. It can also be used for programs that want to be able 224 * to deal with files that contain "holes". 225 * 226 * BLOCK_FLAG_TRAVERSE indicates that the iterator function for the 227 * indirect, doubly indirect, etc. blocks should be called after all 228 * of the blocks containined in the indirect blocks are processed. 229 * This is useful if you are going to be deallocating blocks from an 230 * inode. 231 * 232 * BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be 233 * called for data blocks only. 234 * 235 * BLOCK_FLAG_NO_LARGE is for internal use only. It informs 236 * ext2fs_block_iterate2 that large files won't be accepted. 237 */ 238#define BLOCK_FLAG_APPEND 1 239#define BLOCK_FLAG_HOLE 1 240#define BLOCK_FLAG_DEPTH_TRAVERSE 2 241#define BLOCK_FLAG_DATA_ONLY 4 242 243#define BLOCK_FLAG_NO_LARGE 0x1000 244 245/* 246 * Magic "block count" return values for the block iterator function. 247 */ 248#define BLOCK_COUNT_IND (-1) 249#define BLOCK_COUNT_DIND (-2) 250#define BLOCK_COUNT_TIND (-3) 251#define BLOCK_COUNT_TRANSLATOR (-4) 252 253#if 0 254/* 255 * Flags for ext2fs_move_blocks 256 */ 257#define EXT2_BMOVE_GET_DBLIST 0x0001 258#define EXT2_BMOVE_DEBUG 0x0002 259#endif 260 261/* 262 * Flags for directory block reading and writing functions 263 */ 264#define EXT2_DIRBLOCK_V2_STRUCT 0x0001 265 266/* 267 * Return flags for the directory iterator functions 268 */ 269#define DIRENT_CHANGED 1 270#define DIRENT_ABORT 2 271#define DIRENT_ERROR 3 272 273/* 274 * Directory iterator flags 275 */ 276 277#define DIRENT_FLAG_INCLUDE_EMPTY 1 278#define DIRENT_FLAG_INCLUDE_REMOVED 2 279 280#define DIRENT_DOT_FILE 1 281#define DIRENT_DOT_DOT_FILE 2 282#define DIRENT_OTHER_FILE 3 283#define DIRENT_DELETED_FILE 4 284 285/* 286 * Inode scan definitions 287 */ 288typedef struct ext2_struct_inode_scan *ext2_inode_scan; 289 290/* 291 * ext2fs_scan flags 292 */ 293#define EXT2_SF_CHK_BADBLOCKS 0x0001 294#define EXT2_SF_BAD_INODE_BLK 0x0002 295#define EXT2_SF_BAD_EXTRA_BYTES 0x0004 296#define EXT2_SF_SKIP_MISSING_ITABLE 0x0008 297 298/* 299 * ext2fs_check_if_mounted flags 300 */ 301#define EXT2_MF_MOUNTED 1 302#define EXT2_MF_ISROOT 2 303#define EXT2_MF_READONLY 4 304#define EXT2_MF_SWAP 8 305#define EXT2_MF_BUSY 16 306 307/* 308 * Ext2/linux mode flags. We define them here so that we don't need 309 * to depend on the OS's sys/stat.h, since we may be compiling on a 310 * non-Linux system. 311 */ 312#define LINUX_S_IFMT 00170000 313#define LINUX_S_IFSOCK 0140000 314#define LINUX_S_IFLNK 0120000 315#define LINUX_S_IFREG 0100000 316#define LINUX_S_IFBLK 0060000 317#define LINUX_S_IFDIR 0040000 318#define LINUX_S_IFCHR 0020000 319#define LINUX_S_IFIFO 0010000 320#define LINUX_S_ISUID 0004000 321#define LINUX_S_ISGID 0002000 322#define LINUX_S_ISVTX 0001000 323 324#define LINUX_S_IRWXU 00700 325#define LINUX_S_IRUSR 00400 326#define LINUX_S_IWUSR 00200 327#define LINUX_S_IXUSR 00100 328 329#define LINUX_S_IRWXG 00070 330#define LINUX_S_IRGRP 00040 331#define LINUX_S_IWGRP 00020 332#define LINUX_S_IXGRP 00010 333 334#define LINUX_S_IRWXO 00007 335#define LINUX_S_IROTH 00004 336#define LINUX_S_IWOTH 00002 337#define LINUX_S_IXOTH 00001 338 339#define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK) 340#define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG) 341#define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR) 342#define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR) 343#define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK) 344#define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO) 345#define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK) 346 347/* 348 * ext2 size of an inode 349 */ 350#define EXT2_I_SIZE(i) ((i)->i_size | ((__u64) (i)->i_size_high << 32)) 351 352/* 353 * ext2_icount_t abstraction 354 */ 355#define EXT2_ICOUNT_OPT_INCREMENT 0x01 356 357typedef struct ext2_icount *ext2_icount_t; 358 359/* 360 * Flags for ext2fs_bmap 361 */ 362#define BMAP_ALLOC 0x0001 363#define BMAP_SET 0x0002 364 365/* 366 * Flags for imager.c functions 367 */ 368#define IMAGER_FLAG_INODEMAP 1 369#define IMAGER_FLAG_SPARSEWRITE 2 370 371/* 372 * For checking structure magic numbers... 373 */ 374 375#define EXT2_CHECK_MAGIC(struct, code) \ 376 if ((struct)->magic != (code)) return (code) 377 378 379/* 380 * For ext2 compression support 381 */ 382#define EXT2FS_COMPRESSED_BLKADDR ((blk_t) 0xffffffff) 383#define HOLE_BLKADDR(_b) ((_b) == 0 || (_b) == EXT2FS_COMPRESSED_BLKADDR) 384 385/* 386 * Features supported by this version of the library 387 */ 388#define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\ 389 EXT2_FEATURE_COMPAT_IMAGIC_INODES|\ 390 EXT3_FEATURE_COMPAT_HAS_JOURNAL|\ 391 EXT2_FEATURE_COMPAT_RESIZE_INODE|\ 392 EXT2_FEATURE_COMPAT_DIR_INDEX|\ 393 EXT2_FEATURE_COMPAT_EXT_ATTR) 394 395/* This #ifdef is temporary until compression is fully supported */ 396#ifdef ENABLE_COMPRESSION 397#ifndef I_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL 398/* If the below warning bugs you, then have 399 `CPPFLAGS=-DI_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL' in your 400 environment at configure time. */ 401 #warning "Compression support is experimental" 402#endif 403#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 404 EXT2_FEATURE_INCOMPAT_COMPRESSION|\ 405 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 406 EXT2_FEATURE_INCOMPAT_META_BG|\ 407 EXT3_FEATURE_INCOMPAT_RECOVER) 408#else 409#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 410 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 411 EXT2_FEATURE_INCOMPAT_META_BG|\ 412 EXT3_FEATURE_INCOMPAT_RECOVER) 413#endif 414#define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\ 415 EXT2_FEATURE_RO_COMPAT_LARGE_FILE) 416/* 417 * function prototypes 418 */ 419 420/* alloc.c */ 421extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode, 422 ext2fs_inode_bitmap map, ext2_ino_t *ret); 423extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal, 424 ext2fs_block_bitmap map, blk_t *ret); 425extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start, 426 blk_t finish, int num, 427 ext2fs_block_bitmap map, 428 blk_t *ret); 429extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal, 430 char *block_buf, blk_t *ret); 431 432/* alloc_sb.c */ 433extern int ext2fs_reserve_super_and_bgd(ext2_filsys fs, 434 dgrp_t group, 435 ext2fs_block_bitmap bmap); 436 437/* alloc_stats.c */ 438void ext2fs_inode_alloc_stats(ext2_filsys fs, ext2_ino_t ino, int inuse); 439void ext2fs_inode_alloc_stats2(ext2_filsys fs, ext2_ino_t ino, 440 int inuse, int isdir); 441void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse); 442 443/* alloc_tables.c */ 444extern errcode_t ext2fs_allocate_tables(ext2_filsys fs); 445extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group, 446 ext2fs_block_bitmap bmap); 447 448/* badblocks.c */ 449extern errcode_t ext2fs_u32_list_create(ext2_u32_list *ret, int size); 450extern errcode_t ext2fs_u32_list_add(ext2_u32_list bb, __u32 blk); 451extern int ext2fs_u32_list_find(ext2_u32_list bb, __u32 blk); 452extern int ext2fs_u32_list_test(ext2_u32_list bb, blk_t blk); 453extern errcode_t ext2fs_u32_list_iterate_begin(ext2_u32_list bb, 454 ext2_u32_iterate *ret); 455extern int ext2fs_u32_list_iterate(ext2_u32_iterate iter, blk_t *blk); 456extern void ext2fs_u32_list_iterate_end(ext2_u32_iterate iter); 457extern errcode_t ext2fs_u32_copy(ext2_u32_list src, ext2_u32_list *dest); 458extern int ext2fs_u32_list_equal(ext2_u32_list bb1, ext2_u32_list bb2); 459 460extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret, 461 int size); 462extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb, 463 blk_t blk); 464extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb, 465 blk_t blk); 466extern int ext2fs_u32_list_del(ext2_u32_list bb, __u32 blk); 467extern void ext2fs_badblocks_list_del(ext2_u32_list bb, __u32 blk); 468extern errcode_t 469 ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb, 470 ext2_badblocks_iterate *ret); 471extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter, 472 blk_t *blk); 473extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter); 474extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src, 475 ext2_badblocks_list *dest); 476extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1, 477 ext2_badblocks_list bb2); 478extern int ext2fs_u32_list_count(ext2_u32_list bb); 479 480/* bb_compat */ 481extern errcode_t badblocks_list_create(badblocks_list *ret, int size); 482extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk); 483extern int badblocks_list_test(badblocks_list bb, blk_t blk); 484extern errcode_t badblocks_list_iterate_begin(badblocks_list bb, 485 badblocks_iterate *ret); 486extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk); 487extern void badblocks_list_iterate_end(badblocks_iterate iter); 488extern void badblocks_list_free(badblocks_list bb); 489 490/* bb_inode.c */ 491extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs, 492 ext2_badblocks_list bb_list); 493 494/* bitmaps.c */ 495extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs); 496extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs); 497extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs); 498extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs); 499extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start, 500 __u32 end, 501 __u32 real_end, 502 const char *descr, 503 ext2fs_generic_bitmap *ret); 504extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs, 505 const char *descr, 506 ext2fs_block_bitmap *ret); 507extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs, 508 const char *descr, 509 ext2fs_inode_bitmap *ret); 510extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap, 511 ext2_ino_t end, ext2_ino_t *oend); 512extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap, 513 blk_t end, blk_t *oend); 514extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap); 515extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap); 516extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs); 517extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs); 518 519/* block.c */ 520extern errcode_t ext2fs_block_iterate(ext2_filsys fs, 521 ext2_ino_t ino, 522 int flags, 523 char *block_buf, 524 int (*func)(ext2_filsys fs, 525 blk_t *blocknr, 526 int blockcnt, 527 void *priv_data), 528 void *priv_data); 529errcode_t ext2fs_block_iterate2(ext2_filsys fs, 530 ext2_ino_t ino, 531 int flags, 532 char *block_buf, 533 int (*func)(ext2_filsys fs, 534 blk_t *blocknr, 535 e2_blkcnt_t blockcnt, 536 blk_t ref_blk, 537 int ref_offset, 538 void *priv_data), 539 void *priv_data); 540 541/* bmap.c */ 542extern errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino, 543 struct ext2_inode *inode, 544 char *block_buf, int bmap_flags, 545 blk_t block, blk_t *phys_blk); 546 547 548#if 0 549/* bmove.c */ 550extern errcode_t ext2fs_move_blocks(ext2_filsys fs, 551 ext2fs_block_bitmap reserve, 552 ext2fs_block_bitmap alloc_map, 553 int flags); 554#endif 555 556/* check_desc.c */ 557extern errcode_t ext2fs_check_desc(ext2_filsys fs); 558 559/* closefs.c */ 560extern errcode_t ext2fs_close(ext2_filsys fs); 561extern errcode_t ext2fs_flush(ext2_filsys fs); 562extern int ext2fs_bg_has_super(ext2_filsys fs, int group_block); 563extern int ext2fs_super_and_bgd_loc(ext2_filsys fs, 564 dgrp_t group, 565 blk_t *ret_super_blk, 566 blk_t *ret_old_desc_blk, 567 blk_t *ret_new_desc_blk, 568 int *ret_meta_bg); 569extern void ext2fs_update_dynamic_rev(ext2_filsys fs); 570 571/* cmp_bitmaps.c */ 572extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1, 573 ext2fs_block_bitmap bm2); 574extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1, 575 ext2fs_inode_bitmap bm2); 576 577/* dblist.c */ 578 579extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs); 580extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist); 581extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ext2_ino_t ino, 582 blk_t blk, int blockcnt); 583extern void ext2fs_dblist_sort(ext2_dblist dblist, 584 int (*sortfunc)(const void *, 585 const void *)); 586extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist, 587 int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info, 588 void *priv_data), 589 void *priv_data); 590extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ext2_ino_t ino, 591 blk_t blk, int blockcnt); 592extern errcode_t ext2fs_copy_dblist(ext2_dblist src, 593 ext2_dblist *dest); 594extern int ext2fs_dblist_count(ext2_dblist dblist); 595 596/* dblist_dir.c */ 597extern errcode_t 598 ext2fs_dblist_dir_iterate(ext2_dblist dblist, 599 int flags, 600 char *block_buf, 601 int (*func)(ext2_ino_t dir, 602 int entry, 603 struct ext2_dir_entry *dirent, 604 int offset, 605 int blocksize, 606 char *buf, 607 void *priv_data), 608 void *priv_data); 609 610/* dirblock.c */ 611extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block, 612 void *buf); 613extern errcode_t ext2fs_read_dir_block2(ext2_filsys fs, blk_t block, 614 void *buf, int flags); 615extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block, 616 void *buf); 617extern errcode_t ext2fs_write_dir_block2(ext2_filsys fs, blk_t block, 618 void *buf, int flags); 619 620/* dirhash.c */ 621extern errcode_t ext2fs_dirhash(int version, const char *name, int len, 622 const __u32 *seed, 623 ext2_dirhash_t *ret_hash, 624 ext2_dirhash_t *ret_minor_hash); 625 626 627/* dir_iterate.c */ 628extern errcode_t ext2fs_dir_iterate(ext2_filsys fs, 629 ext2_ino_t dir, 630 int flags, 631 char *block_buf, 632 int (*func)(struct ext2_dir_entry *dirent, 633 int offset, 634 int blocksize, 635 char *buf, 636 void *priv_data), 637 void *priv_data); 638extern errcode_t ext2fs_dir_iterate2(ext2_filsys fs, 639 ext2_ino_t dir, 640 int flags, 641 char *block_buf, 642 int (*func)(ext2_ino_t dir, 643 int entry, 644 struct ext2_dir_entry *dirent, 645 int offset, 646 int blocksize, 647 char *buf, 648 void *priv_data), 649 void *priv_data); 650 651/* dupfs.c */ 652extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest); 653 654/* expanddir.c */ 655extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir); 656 657/* ext_attr.c */ 658extern errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf); 659extern errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block, 660 void *buf); 661extern errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk, 662 char *block_buf, 663 int adjust, __u32 *newcount); 664 665/* fileio.c */ 666extern errcode_t ext2fs_file_open2(ext2_filsys fs, ext2_ino_t ino, 667 struct ext2_inode *inode, 668 int flags, ext2_file_t *ret); 669extern errcode_t ext2fs_file_open(ext2_filsys fs, ext2_ino_t ino, 670 int flags, ext2_file_t *ret); 671extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file); 672extern errcode_t ext2fs_file_close(ext2_file_t file); 673extern errcode_t ext2fs_file_flush(ext2_file_t file); 674extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf, 675 unsigned int wanted, unsigned int *got); 676extern errcode_t ext2fs_file_write(ext2_file_t file, const void *buf, 677 unsigned int nbytes, unsigned int *written); 678extern errcode_t ext2fs_file_llseek(ext2_file_t file, __u64 offset, 679 int whence, __u64 *ret_pos); 680extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset, 681 int whence, ext2_off_t *ret_pos); 682errcode_t ext2fs_file_get_lsize(ext2_file_t file, __u64 *ret_size); 683extern ext2_off_t ext2fs_file_get_size(ext2_file_t file); 684extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size); 685 686/* finddev.c */ 687extern char *ext2fs_find_block_device(dev_t device); 688 689/* flushb.c */ 690extern errcode_t ext2fs_sync_device(int fd, int flushb); 691 692/* freefs.c */ 693extern void ext2fs_free(ext2_filsys fs); 694extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap); 695extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap); 696extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap); 697extern void ext2fs_free_dblist(ext2_dblist dblist); 698extern void ext2fs_badblocks_list_free(ext2_badblocks_list bb); 699extern void ext2fs_u32_list_free(ext2_u32_list bb); 700 701/* getsize.c */ 702extern errcode_t ext2fs_get_device_size(const char *file, int blocksize, 703 blk_t *retblocks); 704 705/* getsectsize.c */ 706errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize); 707 708/* imager.c */ 709extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags); 710extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags); 711extern errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd, int flags); 712extern errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd, int flags); 713extern errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags); 714extern errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags); 715 716/* ind_block.c */ 717errcode_t ext2fs_read_ind_block(ext2_filsys fs, blk_t blk, void *buf); 718errcode_t ext2fs_write_ind_block(ext2_filsys fs, blk_t blk, void *buf); 719 720/* initialize.c */ 721extern errcode_t ext2fs_initialize(const char *name, int flags, 722 struct ext2_super_block *param, 723 io_manager manager, ext2_filsys *ret_fs); 724 725/* icount.c */ 726extern void ext2fs_free_icount(ext2_icount_t icount); 727extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags, 728 unsigned int size, 729 ext2_icount_t hint, ext2_icount_t *ret); 730extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags, 731 unsigned int size, 732 ext2_icount_t *ret); 733extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ext2_ino_t ino, 734 __u16 *ret); 735extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ext2_ino_t ino, 736 __u16 *ret); 737extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ext2_ino_t ino, 738 __u16 *ret); 739extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ext2_ino_t ino, 740 __u16 count); 741extern ext2_ino_t ext2fs_get_icount_size(ext2_icount_t icount); 742errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *); 743 744/* inode.c */ 745extern errcode_t ext2fs_flush_icache(ext2_filsys fs); 746extern errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan, 747 ext2_ino_t *ino, 748 struct ext2_inode *inode, 749 int bufsize); 750extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks, 751 ext2_inode_scan *ret_scan); 752extern void ext2fs_close_inode_scan(ext2_inode_scan scan); 753extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino, 754 struct ext2_inode *inode); 755extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan, 756 int group); 757extern void ext2fs_set_inode_callback 758 (ext2_inode_scan scan, 759 errcode_t (*done_group)(ext2_filsys fs, 760 dgrp_t group, 761 void * priv_data), 762 void *done_group_data); 763extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags, 764 int clear_flags); 765extern errcode_t ext2fs_read_inode_full(ext2_filsys fs, ext2_ino_t ino, 766 struct ext2_inode * inode, 767 int bufsize); 768extern errcode_t ext2fs_read_inode (ext2_filsys fs, ext2_ino_t ino, 769 struct ext2_inode * inode); 770extern errcode_t ext2fs_write_inode_full(ext2_filsys fs, ext2_ino_t ino, 771 struct ext2_inode * inode, 772 int bufsize); 773extern errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino, 774 struct ext2_inode * inode); 775extern errcode_t ext2fs_write_new_inode(ext2_filsys fs, ext2_ino_t ino, 776 struct ext2_inode * inode); 777extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); 778extern errcode_t ext2fs_check_directory(ext2_filsys fs, ext2_ino_t ino); 779 780/* inode_io.c */ 781extern io_manager inode_io_manager; 782extern errcode_t ext2fs_inode_io_intern(ext2_filsys fs, ext2_ino_t ino, 783 char **name); 784extern errcode_t ext2fs_inode_io_intern2(ext2_filsys fs, ext2_ino_t ino, 785 struct ext2_inode *inode, 786 char **name); 787 788/* ismounted.c */ 789extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags); 790extern errcode_t ext2fs_check_mount_point(const char *device, int *mount_flags, 791 char *mtpt, int mtlen); 792 793/* namei.c */ 794extern errcode_t ext2fs_lookup(ext2_filsys fs, ext2_ino_t dir, const char *name, 795 int namelen, char *buf, ext2_ino_t *inode); 796extern errcode_t ext2fs_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 797 const char *name, ext2_ino_t *inode); 798errcode_t ext2fs_namei_follow(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 799 const char *name, ext2_ino_t *inode); 800extern errcode_t ext2fs_follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 801 ext2_ino_t inode, ext2_ino_t *res_inode); 802 803/* native.c */ 804int ext2fs_native_flag(void); 805 806/* newdir.c */ 807extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino, 808 ext2_ino_t parent_ino, char **block); 809 810/* mkdir.c */ 811extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum, 812 const char *name); 813 814/* mkjournal.c */ 815extern errcode_t ext2fs_create_journal_superblock(ext2_filsys fs, 816 __u32 size, int flags, 817 char **ret_jsb); 818extern errcode_t ext2fs_add_journal_device(ext2_filsys fs, 819 ext2_filsys journal_dev); 820extern errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t size, 821 int flags); 822 823/* openfs.c */ 824extern errcode_t ext2fs_open(const char *name, int flags, int superblock, 825 unsigned int block_size, io_manager manager, 826 ext2_filsys *ret_fs); 827extern errcode_t ext2fs_open2(const char *name, const char *io_options, 828 int flags, int superblock, 829 unsigned int block_size, io_manager manager, 830 ext2_filsys *ret_fs); 831extern blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block, 832 dgrp_t i); 833errcode_t ext2fs_get_data_io(ext2_filsys fs, io_channel *old_io); 834errcode_t ext2fs_set_data_io(ext2_filsys fs, io_channel new_io); 835errcode_t ext2fs_rewrite_to_io(ext2_filsys fs, io_channel new_io); 836 837/* get_pathname.c */ 838extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino, 839 char **name); 840 841/* link.c */ 842errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name, 843 ext2_ino_t ino, int flags); 844errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir, const char *name, 845 ext2_ino_t ino, int flags); 846 847/* read_bb.c */ 848extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs, 849 ext2_badblocks_list *bb_list); 850 851/* read_bb_file.c */ 852extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f, 853 ext2_badblocks_list *bb_list, 854 void *priv_data, 855 void (*invalid)(ext2_filsys fs, 856 blk_t blk, 857 char *badstr, 858 void *priv_data)); 859extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f, 860 ext2_badblocks_list *bb_list, 861 void (*invalid)(ext2_filsys fs, 862 blk_t blk)); 863 864/* res_gdt.c */ 865extern errcode_t ext2fs_create_resize_inode(ext2_filsys fs); 866 867/* rs_bitmap.c */ 868extern errcode_t ext2fs_resize_generic_bitmap(__u32 new_end, 869 __u32 new_real_end, 870 ext2fs_generic_bitmap bmap); 871extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end, 872 ext2fs_inode_bitmap bmap); 873extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end, 874 ext2fs_block_bitmap bmap); 875extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src, 876 ext2fs_generic_bitmap *dest); 877 878/* swapfs.c */ 879extern void ext2fs_swap_ext_attr(char *to, char *from, int bufsize, 880 int has_header); 881extern void ext2fs_swap_super(struct ext2_super_block * super); 882extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp); 883extern void ext2fs_swap_inode_full(ext2_filsys fs, struct ext2_inode_large *t, 884 struct ext2_inode_large *f, int hostorder, 885 int bufsize); 886extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t, 887 struct ext2_inode *f, int hostorder); 888 889/* valid_blk.c */ 890extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode); 891 892/* version.c */ 893extern int ext2fs_parse_version_string(const char *ver_string); 894extern int ext2fs_get_library_version(const char **ver_string, 895 const char **date_string); 896 897/* write_bb_file.c */ 898extern errcode_t ext2fs_write_bb_FILE(ext2_badblocks_list bb_list, 899 unsigned int flags, 900 FILE *f); 901 902 903/* inline functions */ 904extern errcode_t ext2fs_get_mem(unsigned long size, void *ptr); 905extern errcode_t ext2fs_free_mem(void *ptr); 906extern errcode_t ext2fs_resize_mem(unsigned long old_size, 907 unsigned long size, void *ptr); 908extern void ext2fs_mark_super_dirty(ext2_filsys fs); 909extern void ext2fs_mark_changed(ext2_filsys fs); 910extern int ext2fs_test_changed(ext2_filsys fs); 911extern void ext2fs_mark_valid(ext2_filsys fs); 912extern void ext2fs_unmark_valid(ext2_filsys fs); 913extern int ext2fs_test_valid(ext2_filsys fs); 914extern void ext2fs_mark_ib_dirty(ext2_filsys fs); 915extern void ext2fs_mark_bb_dirty(ext2_filsys fs); 916extern int ext2fs_test_ib_dirty(ext2_filsys fs); 917extern int ext2fs_test_bb_dirty(ext2_filsys fs); 918extern int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk); 919extern int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino); 920extern blk_t ext2fs_inode_data_blocks(ext2_filsys fs, 921 struct ext2_inode *inode); 922 923#ifdef __cplusplus 924} 925#endif 926 927#endif 928