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 13#ifndef _EXT2FS_EXT2FS_H 14#define _EXT2FS_EXT2FS_H 15 16 17#define EXT2FS_ATTR(x) 18 19#ifdef __cplusplus 20extern "C" { 21#endif 22 23/* 24 * Where the master copy of the superblock is located, and how big 25 * superblocks are supposed to be. We define SUPERBLOCK_SIZE because 26 * the size of the superblock structure is not necessarily trustworthy 27 * (some versions have the padding set up so that the superblock is 28 * 1032 bytes long). 29 */ 30#define SUPERBLOCK_OFFSET 1024 31#define SUPERBLOCK_SIZE 1024 32 33/* 34 * The last ext2fs revision level that this version of the library is 35 * able to support. 36 */ 37#define EXT2_LIB_CURRENT_REV EXT2_DYNAMIC_REV 38 39#ifdef HAVE_SYS_TYPES_H 40#include <sys/types.h> 41#endif 42 43#include <stdio.h> 44#include <stdlib.h> 45 46#include "ext2_types.h" 47#include "ext2_fs.h" 48 49typedef __u32 ext2_ino_t; 50typedef __u32 blk_t; 51typedef __u32 dgrp_t; 52typedef __u32 ext2_off_t; 53typedef __s64 e2_blkcnt_t; 54typedef __u32 ext2_dirhash_t; 55 56#include "ext2_io.h" 57#include "ext2_err.h" 58 59typedef struct struct_ext2_filsys *ext2_filsys; 60 61struct ext2fs_struct_generic_bitmap { 62 errcode_t magic; 63 ext2_filsys fs; 64 __u32 start, end; 65 __u32 real_end; 66 char * description; 67 char * bitmap; 68 errcode_t base_error_code; 69 __u32 reserved[7]; 70}; 71 72#define EXT2FS_MARK_ERROR 0 73#define EXT2FS_UNMARK_ERROR 1 74#define EXT2FS_TEST_ERROR 2 75 76typedef struct ext2fs_struct_generic_bitmap *ext2fs_generic_bitmap; 77typedef struct ext2fs_struct_generic_bitmap *ext2fs_inode_bitmap; 78typedef struct ext2fs_struct_generic_bitmap *ext2fs_block_bitmap; 79 80#define EXT2_FIRST_INODE(s) EXT2_FIRST_INO(s) 81 82/* 83 * badblocks list definitions 84 */ 85 86typedef struct ext2_struct_u32_list *ext2_badblocks_list; 87typedef struct ext2_struct_u32_iterate *ext2_badblocks_iterate; 88 89typedef struct ext2_struct_u32_list *ext2_u32_list; 90typedef struct ext2_struct_u32_iterate *ext2_u32_iterate; 91 92/* old */ 93typedef struct ext2_struct_u32_list *badblocks_list; 94typedef struct ext2_struct_u32_iterate *badblocks_iterate; 95 96#define BADBLOCKS_FLAG_DIRTY 1 97 98/* 99 * ext2_dblist structure and abstractions (see dblist.c) 100 */ 101struct ext2_db_entry { 102 ext2_ino_t ino; 103 blk_t blk; 104 int blockcnt; 105}; 106 107typedef struct ext2_struct_dblist *ext2_dblist; 108 109#define DBLIST_ABORT 1 110 111/* 112 * ext2_fileio definitions 113 */ 114 115#define EXT2_FILE_WRITE 0x0001 116#define EXT2_FILE_CREATE 0x0002 117 118#define EXT2_FILE_MASK 0x00FF 119 120#define EXT2_FILE_BUF_DIRTY 0x4000 121#define EXT2_FILE_BUF_VALID 0x2000 122 123typedef struct ext2_file *ext2_file_t; 124 125#define EXT2_SEEK_SET 0 126#define EXT2_SEEK_CUR 1 127#define EXT2_SEEK_END 2 128 129/* 130 * Flags for the ext2_filsys structure and for ext2fs_open() 131 */ 132#define EXT2_FLAG_RW 0x01 133#define EXT2_FLAG_CHANGED 0x02 134#define EXT2_FLAG_DIRTY 0x04 135#define EXT2_FLAG_VALID 0x08 136#define EXT2_FLAG_IB_DIRTY 0x10 137#define EXT2_FLAG_BB_DIRTY 0x20 138#define EXT2_FLAG_SWAP_BYTES 0x40 139#define EXT2_FLAG_SWAP_BYTES_READ 0x80 140#define EXT2_FLAG_SWAP_BYTES_WRITE 0x100 141#define EXT2_FLAG_MASTER_SB_ONLY 0x200 142#define EXT2_FLAG_FORCE 0x400 143#define EXT2_FLAG_SUPER_ONLY 0x800 144#define EXT2_FLAG_JOURNAL_DEV_OK 0x1000 145#define EXT2_FLAG_IMAGE_FILE 0x2000 146 147/* 148 * Special flag in the ext2 inode i_flag field that means that this is 149 * a new inode. (So that ext2_write_inode() can clear extra fields.) 150 */ 151#define EXT2_NEW_INODE_FL 0x80000000 152 153/* 154 * Flags for mkjournal 155 * 156 * EXT2_MKJOURNAL_V1_SUPER Make a (deprecated) V1 journal superblock 157 */ 158#define EXT2_MKJOURNAL_V1_SUPER 0x0000001 159 160struct struct_ext2_filsys { 161 errcode_t magic; 162 io_channel io; 163 int flags; 164 char * device_name; 165 struct ext2_super_block * super; 166 unsigned int blocksize; 167 int fragsize; 168 dgrp_t group_desc_count; 169 unsigned long desc_blocks; 170 struct ext2_group_desc * group_desc; 171 int inode_blocks_per_group; 172 ext2fs_inode_bitmap inode_map; 173 ext2fs_block_bitmap block_map; 174 errcode_t (*get_blocks)(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); 175 errcode_t (*check_directory)(ext2_filsys fs, ext2_ino_t ino); 176 errcode_t (*write_bitmaps)(ext2_filsys fs); 177 errcode_t (*read_inode)(ext2_filsys fs, ext2_ino_t ino, 178 struct ext2_inode *inode); 179 errcode_t (*write_inode)(ext2_filsys fs, ext2_ino_t ino, 180 struct ext2_inode *inode); 181 ext2_badblocks_list badblocks; 182 ext2_dblist dblist; 183 __u32 stride; /* for mke2fs */ 184 struct ext2_super_block * orig_super; 185 struct ext2_image_hdr * image_header; 186 __u32 umask; 187 /* 188 * Reserved for future expansion 189 */ 190 __u32 reserved[8]; 191 192 /* 193 * Reserved for the use of the calling application. 194 */ 195 void * priv_data; 196 197 /* 198 * Inode cache 199 */ 200 struct ext2_inode_cache *icache; 201 io_channel image_io; 202}; 203 204#include "bitops.h" 205 206/* 207 * Return flags for the block iterator functions 208 */ 209#define BLOCK_CHANGED 1 210#define BLOCK_ABORT 2 211#define BLOCK_ERROR 4 212 213/* 214 * Block interate flags 215 * 216 * BLOCK_FLAG_APPEND, or BLOCK_FLAG_HOLE, indicates that the interator 217 * function should be called on blocks where the block number is zero. 218 * This is used by ext2fs_expand_dir() to be able to add a new block 219 * to an inode. It can also be used for programs that want to be able 220 * to deal with files that contain "holes". 221 * 222 * BLOCK_FLAG_TRAVERSE indicates that the iterator function for the 223 * indirect, doubly indirect, etc. blocks should be called after all 224 * of the blocks containined in the indirect blocks are processed. 225 * This is useful if you are going to be deallocating blocks from an 226 * inode. 227 * 228 * BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be 229 * called for data blocks only. 230 * 231 * BLOCK_FLAG_NO_LARGE is for internal use only. It informs 232 * ext2fs_block_iterate2 that large files won't be accepted. 233 */ 234#define BLOCK_FLAG_APPEND 1 235#define BLOCK_FLAG_HOLE 1 236#define BLOCK_FLAG_DEPTH_TRAVERSE 2 237#define BLOCK_FLAG_DATA_ONLY 4 238 239#define BLOCK_FLAG_NO_LARGE 0x1000 240 241/* 242 * Magic "block count" return values for the block iterator function. 243 */ 244#define BLOCK_COUNT_IND (-1) 245#define BLOCK_COUNT_DIND (-2) 246#define BLOCK_COUNT_TIND (-3) 247#define BLOCK_COUNT_TRANSLATOR (-4) 248 249 250/* 251 * Flags for directory block reading and writing functions 252 */ 253#define EXT2_DIRBLOCK_V2_STRUCT 0x0001 254 255/* 256 * Return flags for the directory iterator functions 257 */ 258#define DIRENT_CHANGED 1 259#define DIRENT_ABORT 2 260#define DIRENT_ERROR 3 261 262/* 263 * Directory iterator flags 264 */ 265 266#define DIRENT_FLAG_INCLUDE_EMPTY 1 267#define DIRENT_FLAG_INCLUDE_REMOVED 2 268 269#define DIRENT_DOT_FILE 1 270#define DIRENT_DOT_DOT_FILE 2 271#define DIRENT_OTHER_FILE 3 272#define DIRENT_DELETED_FILE 4 273 274/* 275 * Inode scan definitions 276 */ 277typedef struct ext2_struct_inode_scan *ext2_inode_scan; 278 279/* 280 * ext2fs_scan flags 281 */ 282#define EXT2_SF_CHK_BADBLOCKS 0x0001 283#define EXT2_SF_BAD_INODE_BLK 0x0002 284#define EXT2_SF_BAD_EXTRA_BYTES 0x0004 285#define EXT2_SF_SKIP_MISSING_ITABLE 0x0008 286 287/* 288 * ext2fs_check_if_mounted flags 289 */ 290#define EXT2_MF_MOUNTED 1 291#define EXT2_MF_ISROOT 2 292#define EXT2_MF_READONLY 4 293#define EXT2_MF_SWAP 8 294#define EXT2_MF_BUSY 16 295 296/* 297 * Ext2/linux mode flags. We define them here so that we don't need 298 * to depend on the OS's sys/stat.h, since we may be compiling on a 299 * non-Linux system. 300 */ 301#define LINUX_S_IFMT 00170000 302#define LINUX_S_IFSOCK 0140000 303#define LINUX_S_IFLNK 0120000 304#define LINUX_S_IFREG 0100000 305#define LINUX_S_IFBLK 0060000 306#define LINUX_S_IFDIR 0040000 307#define LINUX_S_IFCHR 0020000 308#define LINUX_S_IFIFO 0010000 309#define LINUX_S_ISUID 0004000 310#define LINUX_S_ISGID 0002000 311#define LINUX_S_ISVTX 0001000 312 313#define LINUX_S_IRWXU 00700 314#define LINUX_S_IRUSR 00400 315#define LINUX_S_IWUSR 00200 316#define LINUX_S_IXUSR 00100 317 318#define LINUX_S_IRWXG 00070 319#define LINUX_S_IRGRP 00040 320#define LINUX_S_IWGRP 00020 321#define LINUX_S_IXGRP 00010 322 323#define LINUX_S_IRWXO 00007 324#define LINUX_S_IROTH 00004 325#define LINUX_S_IWOTH 00002 326#define LINUX_S_IXOTH 00001 327 328#define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK) 329#define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG) 330#define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR) 331#define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR) 332#define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK) 333#define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO) 334#define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK) 335 336/* 337 * ext2 size of an inode 338 */ 339#define EXT2_I_SIZE(i) ((i)->i_size | ((__u64) (i)->i_size_high << 32)) 340 341/* 342 * ext2_icount_t abstraction 343 */ 344#define EXT2_ICOUNT_OPT_INCREMENT 0x01 345 346typedef struct ext2_icount *ext2_icount_t; 347 348/* 349 * Flags for ext2fs_bmap 350 */ 351#define BMAP_ALLOC 0x0001 352#define BMAP_SET 0x0002 353 354/* 355 * Flags for imager.c functions 356 */ 357#define IMAGER_FLAG_INODEMAP 1 358#define IMAGER_FLAG_SPARSEWRITE 2 359 360/* 361 * For checking structure magic numbers... 362 */ 363 364#define EXT2_CHECK_MAGIC(struct, code) \ 365 if ((struct)->magic != (code)) return (code) 366 367 368/* 369 * For ext2 compression support 370 */ 371#define EXT2FS_COMPRESSED_BLKADDR ((blk_t) 0xffffffff) 372#define HOLE_BLKADDR(_b) ((_b) == 0 || (_b) == EXT2FS_COMPRESSED_BLKADDR) 373 374/* 375 * Features supported by this version of the library 376 */ 377#define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\ 378 EXT2_FEATURE_COMPAT_IMAGIC_INODES|\ 379 EXT3_FEATURE_COMPAT_HAS_JOURNAL|\ 380 EXT2_FEATURE_COMPAT_RESIZE_INODE|\ 381 EXT2_FEATURE_COMPAT_DIR_INDEX|\ 382 EXT2_FEATURE_COMPAT_EXT_ATTR) 383 384/* This #ifdef is temporary until compression is fully supported */ 385#ifdef ENABLE_COMPRESSION 386#ifndef I_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL 387/* If the below warning bugs you, then have 388 `CPPFLAGS=-DI_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL' in your 389 environment at configure time. */ 390 #warning "Compression support is experimental" 391#endif 392#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 393 EXT2_FEATURE_INCOMPAT_COMPRESSION|\ 394 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 395 EXT2_FEATURE_INCOMPAT_META_BG|\ 396 EXT3_FEATURE_INCOMPAT_RECOVER) 397#else 398#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 399 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 400 EXT2_FEATURE_INCOMPAT_META_BG|\ 401 EXT3_FEATURE_INCOMPAT_RECOVER) 402#endif 403#define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\ 404 EXT2_FEATURE_RO_COMPAT_LARGE_FILE) 405/* 406 * function prototypes 407 */ 408 409/* alloc.c */ 410extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode, 411 ext2fs_inode_bitmap map, ext2_ino_t *ret); 412extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal, 413 ext2fs_block_bitmap map, blk_t *ret); 414extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start, 415 blk_t finish, int num, 416 ext2fs_block_bitmap map, 417 blk_t *ret); 418extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal, 419 char *block_buf, blk_t *ret); 420 421/* alloc_sb.c */ 422extern int ext2fs_reserve_super_and_bgd(ext2_filsys fs, 423 dgrp_t group, 424 ext2fs_block_bitmap bmap); 425 426/* alloc_stats.c */ 427void ext2fs_inode_alloc_stats(ext2_filsys fs, ext2_ino_t ino, int inuse); 428void ext2fs_inode_alloc_stats2(ext2_filsys fs, ext2_ino_t ino, 429 int inuse, int isdir); 430void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse); 431 432/* alloc_tables.c */ 433extern errcode_t ext2fs_allocate_tables(ext2_filsys fs); 434extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group, 435 ext2fs_block_bitmap bmap); 436 437/* badblocks.c */ 438extern errcode_t ext2fs_u32_list_create(ext2_u32_list *ret, int size); 439extern errcode_t ext2fs_u32_list_add(ext2_u32_list bb, __u32 blk); 440extern int ext2fs_u32_list_find(ext2_u32_list bb, __u32 blk); 441extern int ext2fs_u32_list_test(ext2_u32_list bb, blk_t blk); 442extern errcode_t ext2fs_u32_list_iterate_begin(ext2_u32_list bb, 443 ext2_u32_iterate *ret); 444extern int ext2fs_u32_list_iterate(ext2_u32_iterate iter, blk_t *blk); 445extern void ext2fs_u32_list_iterate_end(ext2_u32_iterate iter); 446extern errcode_t ext2fs_u32_copy(ext2_u32_list src, ext2_u32_list *dest); 447extern int ext2fs_u32_list_equal(ext2_u32_list bb1, ext2_u32_list bb2); 448 449extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret, 450 int size); 451extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb, 452 blk_t blk); 453extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb, 454 blk_t blk); 455extern int ext2fs_u32_list_del(ext2_u32_list bb, __u32 blk); 456extern void ext2fs_badblocks_list_del(ext2_u32_list bb, __u32 blk); 457extern errcode_t 458 ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb, 459 ext2_badblocks_iterate *ret); 460extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter, 461 blk_t *blk); 462extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter); 463extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src, 464 ext2_badblocks_list *dest); 465extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1, 466 ext2_badblocks_list bb2); 467extern int ext2fs_u32_list_count(ext2_u32_list bb); 468 469/* bb_compat */ 470extern errcode_t badblocks_list_create(badblocks_list *ret, int size); 471extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk); 472extern int badblocks_list_test(badblocks_list bb, blk_t blk); 473extern errcode_t badblocks_list_iterate_begin(badblocks_list bb, 474 badblocks_iterate *ret); 475extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk); 476extern void badblocks_list_iterate_end(badblocks_iterate iter); 477extern void badblocks_list_free(badblocks_list bb); 478 479/* bb_inode.c */ 480extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs, 481 ext2_badblocks_list bb_list); 482 483/* bitmaps.c */ 484extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs); 485extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs); 486extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs); 487extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs); 488extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start, 489 __u32 end, 490 __u32 real_end, 491 const char *descr, 492 ext2fs_generic_bitmap *ret); 493extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs, 494 const char *descr, 495 ext2fs_block_bitmap *ret); 496extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs, 497 const char *descr, 498 ext2fs_inode_bitmap *ret); 499extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap, 500 ext2_ino_t end, ext2_ino_t *oend); 501extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap, 502 blk_t end, blk_t *oend); 503extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap); 504extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap); 505extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs); 506extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs); 507 508/* block.c */ 509extern errcode_t ext2fs_block_iterate(ext2_filsys fs, 510 ext2_ino_t ino, 511 int flags, 512 char *block_buf, 513 int (*func)(ext2_filsys fs, 514 blk_t *blocknr, 515 int blockcnt, 516 void *priv_data), 517 void *priv_data); 518errcode_t ext2fs_block_iterate2(ext2_filsys fs, 519 ext2_ino_t ino, 520 int flags, 521 char *block_buf, 522 int (*func)(ext2_filsys fs, 523 blk_t *blocknr, 524 e2_blkcnt_t blockcnt, 525 blk_t ref_blk, 526 int ref_offset, 527 void *priv_data), 528 void *priv_data); 529 530/* bmap.c */ 531extern errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino, 532 struct ext2_inode *inode, 533 char *block_buf, int bmap_flags, 534 blk_t block, blk_t *phys_blk); 535 536 537 538/* check_desc.c */ 539extern errcode_t ext2fs_check_desc(ext2_filsys fs); 540 541/* closefs.c */ 542extern errcode_t ext2fs_close(ext2_filsys fs); 543extern errcode_t ext2fs_flush(ext2_filsys fs); 544extern int ext2fs_bg_has_super(ext2_filsys fs, int group_block); 545extern int ext2fs_super_and_bgd_loc(ext2_filsys fs, 546 dgrp_t group, 547 blk_t *ret_super_blk, 548 blk_t *ret_old_desc_blk, 549 blk_t *ret_new_desc_blk, 550 int *ret_meta_bg); 551extern void ext2fs_update_dynamic_rev(ext2_filsys fs); 552 553/* cmp_bitmaps.c */ 554extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1, 555 ext2fs_block_bitmap bm2); 556extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1, 557 ext2fs_inode_bitmap bm2); 558 559/* dblist.c */ 560 561extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs); 562extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist); 563extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ext2_ino_t ino, 564 blk_t blk, int blockcnt); 565extern void ext2fs_dblist_sort(ext2_dblist dblist, 566 int (*sortfunc)(const void *, 567 const void *)); 568extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist, 569 int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info, 570 void *priv_data), 571 void *priv_data); 572extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ext2_ino_t ino, 573 blk_t blk, int blockcnt); 574extern errcode_t ext2fs_copy_dblist(ext2_dblist src, 575 ext2_dblist *dest); 576extern int ext2fs_dblist_count(ext2_dblist dblist); 577 578/* dblist_dir.c */ 579extern errcode_t 580 ext2fs_dblist_dir_iterate(ext2_dblist dblist, 581 int flags, 582 char *block_buf, 583 int (*func)(ext2_ino_t dir, 584 int entry, 585 struct ext2_dir_entry *dirent, 586 int offset, 587 int blocksize, 588 char *buf, 589 void *priv_data), 590 void *priv_data); 591 592/* dirblock.c */ 593extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block, 594 void *buf); 595extern errcode_t ext2fs_read_dir_block2(ext2_filsys fs, blk_t block, 596 void *buf, int flags); 597extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block, 598 void *buf); 599extern errcode_t ext2fs_write_dir_block2(ext2_filsys fs, blk_t block, 600 void *buf, int flags); 601 602/* dirhash.c */ 603extern errcode_t ext2fs_dirhash(int version, const char *name, int len, 604 const __u32 *seed, 605 ext2_dirhash_t *ret_hash, 606 ext2_dirhash_t *ret_minor_hash); 607 608 609/* dir_iterate.c */ 610extern errcode_t ext2fs_dir_iterate(ext2_filsys fs, 611 ext2_ino_t dir, 612 int flags, 613 char *block_buf, 614 int (*func)(struct ext2_dir_entry *dirent, 615 int offset, 616 int blocksize, 617 char *buf, 618 void *priv_data), 619 void *priv_data); 620extern errcode_t ext2fs_dir_iterate2(ext2_filsys fs, 621 ext2_ino_t dir, 622 int flags, 623 char *block_buf, 624 int (*func)(ext2_ino_t dir, 625 int entry, 626 struct ext2_dir_entry *dirent, 627 int offset, 628 int blocksize, 629 char *buf, 630 void *priv_data), 631 void *priv_data); 632 633/* dupfs.c */ 634extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest); 635 636/* expanddir.c */ 637extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir); 638 639/* ext_attr.c */ 640extern errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf); 641extern errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block, 642 void *buf); 643extern errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk, 644 char *block_buf, 645 int adjust, __u32 *newcount); 646 647/* fileio.c */ 648extern errcode_t ext2fs_file_open2(ext2_filsys fs, ext2_ino_t ino, 649 struct ext2_inode *inode, 650 int flags, ext2_file_t *ret); 651extern errcode_t ext2fs_file_open(ext2_filsys fs, ext2_ino_t ino, 652 int flags, ext2_file_t *ret); 653extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file); 654extern errcode_t ext2fs_file_close(ext2_file_t file); 655extern errcode_t ext2fs_file_flush(ext2_file_t file); 656extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf, 657 unsigned int wanted, unsigned int *got); 658extern errcode_t ext2fs_file_write(ext2_file_t file, const void *buf, 659 unsigned int nbytes, unsigned int *written); 660extern errcode_t ext2fs_file_llseek(ext2_file_t file, __u64 offset, 661 int whence, __u64 *ret_pos); 662extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset, 663 int whence, ext2_off_t *ret_pos); 664errcode_t ext2fs_file_get_lsize(ext2_file_t file, __u64 *ret_size); 665extern ext2_off_t ext2fs_file_get_size(ext2_file_t file); 666extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size); 667 668/* finddev.c */ 669extern char *ext2fs_find_block_device(dev_t device); 670 671/* flushb.c */ 672extern errcode_t ext2fs_sync_device(int fd, int flushb); 673 674/* freefs.c */ 675extern void ext2fs_free(ext2_filsys fs); 676extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap); 677extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap); 678extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap); 679extern void ext2fs_free_dblist(ext2_dblist dblist); 680extern void ext2fs_badblocks_list_free(ext2_badblocks_list bb); 681extern void ext2fs_u32_list_free(ext2_u32_list bb); 682 683/* getsize.c */ 684extern errcode_t ext2fs_get_device_size(const char *file, int blocksize, 685 blk_t *retblocks); 686 687/* getsectsize.c */ 688errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize); 689 690/* imager.c */ 691extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags); 692extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags); 693extern errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd, int flags); 694extern errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd, int flags); 695extern errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags); 696extern errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags); 697 698/* ind_block.c */ 699errcode_t ext2fs_read_ind_block(ext2_filsys fs, blk_t blk, void *buf); 700errcode_t ext2fs_write_ind_block(ext2_filsys fs, blk_t blk, void *buf); 701 702/* initialize.c */ 703extern errcode_t ext2fs_initialize(const char *name, int flags, 704 struct ext2_super_block *param, 705 io_manager manager, ext2_filsys *ret_fs); 706 707/* icount.c */ 708extern void ext2fs_free_icount(ext2_icount_t icount); 709extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags, 710 unsigned int size, 711 ext2_icount_t hint, ext2_icount_t *ret); 712extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags, 713 unsigned int size, 714 ext2_icount_t *ret); 715extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ext2_ino_t ino, 716 __u16 *ret); 717extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ext2_ino_t ino, 718 __u16 *ret); 719extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ext2_ino_t ino, 720 __u16 *ret); 721extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ext2_ino_t ino, 722 __u16 count); 723extern ext2_ino_t ext2fs_get_icount_size(ext2_icount_t icount); 724errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *); 725 726/* inode.c */ 727extern errcode_t ext2fs_flush_icache(ext2_filsys fs); 728extern errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan, 729 ext2_ino_t *ino, 730 struct ext2_inode *inode, 731 int bufsize); 732extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks, 733 ext2_inode_scan *ret_scan); 734extern void ext2fs_close_inode_scan(ext2_inode_scan scan); 735extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino, 736 struct ext2_inode *inode); 737extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan, 738 int group); 739extern void ext2fs_set_inode_callback 740 (ext2_inode_scan scan, 741 errcode_t (*done_group)(ext2_filsys fs, 742 dgrp_t group, 743 void * priv_data), 744 void *done_group_data); 745extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags, 746 int clear_flags); 747extern errcode_t ext2fs_read_inode_full(ext2_filsys fs, ext2_ino_t ino, 748 struct ext2_inode * inode, 749 int bufsize); 750extern errcode_t ext2fs_read_inode (ext2_filsys fs, ext2_ino_t ino, 751 struct ext2_inode * inode); 752extern errcode_t ext2fs_write_inode_full(ext2_filsys fs, ext2_ino_t ino, 753 struct ext2_inode * inode, 754 int bufsize); 755extern errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino, 756 struct ext2_inode * inode); 757extern errcode_t ext2fs_write_new_inode(ext2_filsys fs, ext2_ino_t ino, 758 struct ext2_inode * inode); 759extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); 760extern errcode_t ext2fs_check_directory(ext2_filsys fs, ext2_ino_t ino); 761 762/* inode_io.c */ 763extern io_manager inode_io_manager; 764extern errcode_t ext2fs_inode_io_intern(ext2_filsys fs, ext2_ino_t ino, 765 char **name); 766extern errcode_t ext2fs_inode_io_intern2(ext2_filsys fs, ext2_ino_t ino, 767 struct ext2_inode *inode, 768 char **name); 769 770/* ismounted.c */ 771extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags); 772extern errcode_t ext2fs_check_mount_point(const char *device, int *mount_flags, 773 char *mtpt, int mtlen); 774 775/* namei.c */ 776extern errcode_t ext2fs_lookup(ext2_filsys fs, ext2_ino_t dir, const char *name, 777 int namelen, char *buf, ext2_ino_t *inode); 778extern errcode_t ext2fs_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 779 const char *name, ext2_ino_t *inode); 780errcode_t ext2fs_namei_follow(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 781 const char *name, ext2_ino_t *inode); 782extern errcode_t ext2fs_follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 783 ext2_ino_t inode, ext2_ino_t *res_inode); 784 785/* native.c */ 786int ext2fs_native_flag(void); 787 788/* newdir.c */ 789extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino, 790 ext2_ino_t parent_ino, char **block); 791 792/* mkdir.c */ 793extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum, 794 const char *name); 795 796/* mkjournal.c */ 797extern errcode_t ext2fs_create_journal_superblock(ext2_filsys fs, 798 __u32 size, int flags, 799 char **ret_jsb); 800extern errcode_t ext2fs_add_journal_device(ext2_filsys fs, 801 ext2_filsys journal_dev); 802extern errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t size, 803 int flags); 804 805/* openfs.c */ 806extern errcode_t ext2fs_open(const char *name, int flags, int superblock, 807 unsigned int block_size, io_manager manager, 808 ext2_filsys *ret_fs); 809extern errcode_t ext2fs_open2(const char *name, const char *io_options, 810 int flags, int superblock, 811 unsigned int block_size, io_manager manager, 812 ext2_filsys *ret_fs); 813extern blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block, 814 dgrp_t i); 815errcode_t ext2fs_get_data_io(ext2_filsys fs, io_channel *old_io); 816errcode_t ext2fs_set_data_io(ext2_filsys fs, io_channel new_io); 817errcode_t ext2fs_rewrite_to_io(ext2_filsys fs, io_channel new_io); 818 819/* get_pathname.c */ 820extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino, 821 char **name); 822 823/* link.c */ 824errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name, 825 ext2_ino_t ino, int flags); 826errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir, const char *name, 827 ext2_ino_t ino, int flags); 828 829/* read_bb.c */ 830extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs, 831 ext2_badblocks_list *bb_list); 832 833/* read_bb_file.c */ 834extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f, 835 ext2_badblocks_list *bb_list, 836 void *priv_data, 837 void (*invalid)(ext2_filsys fs, 838 blk_t blk, 839 char *badstr, 840 void *priv_data)); 841extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f, 842 ext2_badblocks_list *bb_list, 843 void (*invalid)(ext2_filsys fs, 844 blk_t blk)); 845 846/* res_gdt.c */ 847extern errcode_t ext2fs_create_resize_inode(ext2_filsys fs); 848 849/* rs_bitmap.c */ 850extern errcode_t ext2fs_resize_generic_bitmap(__u32 new_end, 851 __u32 new_real_end, 852 ext2fs_generic_bitmap bmap); 853extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end, 854 ext2fs_inode_bitmap bmap); 855extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end, 856 ext2fs_block_bitmap bmap); 857extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src, 858 ext2fs_generic_bitmap *dest); 859 860/* swapfs.c */ 861extern void ext2fs_swap_ext_attr(char *to, char *from, int bufsize, 862 int has_header); 863extern void ext2fs_swap_super(struct ext2_super_block * super); 864extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp); 865extern void ext2fs_swap_inode_full(ext2_filsys fs, struct ext2_inode_large *t, 866 struct ext2_inode_large *f, int hostorder, 867 int bufsize); 868extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t, 869 struct ext2_inode *f, int hostorder); 870 871/* valid_blk.c */ 872extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode); 873 874/* version.c */ 875extern int ext2fs_parse_version_string(const char *ver_string); 876extern int ext2fs_get_library_version(const char **ver_string, 877 const char **date_string); 878 879/* write_bb_file.c */ 880extern errcode_t ext2fs_write_bb_FILE(ext2_badblocks_list bb_list, 881 unsigned int flags, 882 FILE *f); 883 884 885/* inline functions */ 886extern errcode_t ext2fs_get_mem(unsigned long size, void *ptr); 887extern errcode_t ext2fs_free_mem(void *ptr); 888extern errcode_t ext2fs_resize_mem(unsigned long old_size, 889 unsigned long size, void *ptr); 890extern void ext2fs_mark_super_dirty(ext2_filsys fs); 891extern void ext2fs_mark_changed(ext2_filsys fs); 892extern int ext2fs_test_changed(ext2_filsys fs); 893extern void ext2fs_mark_valid(ext2_filsys fs); 894extern void ext2fs_unmark_valid(ext2_filsys fs); 895extern int ext2fs_test_valid(ext2_filsys fs); 896extern void ext2fs_mark_ib_dirty(ext2_filsys fs); 897extern void ext2fs_mark_bb_dirty(ext2_filsys fs); 898extern int ext2fs_test_ib_dirty(ext2_filsys fs); 899extern int ext2fs_test_bb_dirty(ext2_filsys fs); 900extern int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk); 901extern int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino); 902extern blk_t ext2fs_inode_data_blocks(ext2_filsys fs, 903 struct ext2_inode *inode); 904 905#ifdef __cplusplus 906} 907#endif 908 909#endif /* _EXT2FS_EXT2FS_H */ 910