ext2fs.h revision 7d7bdd578b307cad1dc248310eb279c6fb73b682
1/* 2 * ext2fs.h --- ext2fs 3 * 4 * Copyright (C) 1993, 1994, 1995, 1996 Theodore Ts'o. 5 * 6 * %Begin-Header% 7 * This file may be redistributed under the terms of the GNU Public 8 * License. 9 * %End-Header% 10 */ 11 12#ifndef _EXT2FS_EXT2FS_H 13#define _EXT2FS_EXT2FS_H 14 15#ifdef __cplusplus 16extern "C" { 17#endif 18 19/* 20 * Non-GNU C compilers won't necessarily understand inline 21 */ 22#if (!defined(__GNUC__) && !defined(__WATCOMC__)) 23#define NO_INLINE_FUNCS 24#endif 25 26/* 27 * Build in support for byte-swapping filesystems if we the feature 28 * has been configured or if we're being built on a CPU architecture 29 * with a non-native byte order. 30 */ 31#if defined(ENABLE_SWAPFS) || defined(WORDS_BIGENDIAN) 32#define EXT2FS_ENABLE_SWAPFS 33#endif 34 35/* 36 * Where the master copy of the superblock is located, and how big 37 * superblocks are supposed to be. We define SUPERBLOCK_SIZE because 38 * the size of the superblock structure is not necessarily trustworthy 39 * (some versions have the padding set up so that the superblock is 40 * 1032 bytes long). 41 */ 42#define SUPERBLOCK_OFFSET 1024 43#define SUPERBLOCK_SIZE 1024 44 45/* 46 * The last ext2fs revision level that this version of the library is 47 * able to support. 48 */ 49#define EXT2_LIB_CURRENT_REV EXT2_DYNAMIC_REV 50 51#ifdef HAVE_SYS_TYPES_H 52#include <sys/types.h> 53#endif 54 55#include <stdio.h> 56#include <stdlib.h> 57 58#if EXT2_FLAT_INCLUDES 59#include "e2_types.h" 60#include "ext2_fs.h" 61#else 62#include <ext2fs/ext2_types.h> 63#include <ext2fs/ext2_fs.h> 64#endif /* EXT2_FLAT_INCLUDES */ 65 66typedef __u32 ext2_ino_t; 67typedef __u32 blk_t; 68typedef __u32 dgrp_t; 69typedef __u32 ext2_off_t; 70typedef __s64 e2_blkcnt_t; 71typedef __u32 ext2_dirhash_t; 72 73#if EXT2_FLAT_INCLUDES 74#include "com_err.h" 75#include "ext2_io.h" 76#include "ext2_err.h" 77#else 78#include <et/com_err.h> 79#include <ext2fs/ext2_io.h> 80#include <ext2fs/ext2_err.h> 81#endif 82 83/* 84 * Portability help for Microsoft Visual C++ 85 */ 86#ifdef _MSC_VER 87#define EXT2_QSORT_TYPE int __cdecl 88#else 89#define EXT2_QSORT_TYPE int 90#endif 91 92typedef struct struct_ext2_filsys *ext2_filsys; 93 94struct ext2fs_struct_generic_bitmap { 95 errcode_t magic; 96 ext2_filsys fs; 97 __u32 start, end; 98 __u32 real_end; 99 char * description; 100 char * bitmap; 101 errcode_t base_error_code; 102 __u32 reserved[7]; 103}; 104 105#define EXT2FS_MARK_ERROR 0 106#define EXT2FS_UNMARK_ERROR 1 107#define EXT2FS_TEST_ERROR 2 108 109typedef struct ext2fs_struct_generic_bitmap *ext2fs_generic_bitmap; 110typedef struct ext2fs_struct_generic_bitmap *ext2fs_inode_bitmap; 111typedef struct ext2fs_struct_generic_bitmap *ext2fs_block_bitmap; 112 113#ifdef EXT2_DYNAMIC_REV 114#define EXT2_FIRST_INODE(s) EXT2_FIRST_INO(s) 115#else 116#define EXT2_FIRST_INODE(s) EXT2_FIRST_INO 117#define EXT2_INODE_SIZE(s) sizeof(struct ext2_inode) 118#endif 119 120/* 121 * badblocks list definitions 122 */ 123 124typedef struct ext2_struct_u32_list *ext2_badblocks_list; 125typedef struct ext2_struct_u32_iterate *ext2_badblocks_iterate; 126 127typedef struct ext2_struct_u32_list *ext2_u32_list; 128typedef struct ext2_struct_u32_iterate *ext2_u32_iterate; 129 130/* old */ 131typedef struct ext2_struct_u32_list *badblocks_list; 132typedef struct ext2_struct_u32_iterate *badblocks_iterate; 133 134#define BADBLOCKS_FLAG_DIRTY 1 135 136/* 137 * ext2_dblist structure and abstractions (see dblist.c) 138 */ 139struct ext2_db_entry { 140 ext2_ino_t ino; 141 blk_t blk; 142 int blockcnt; 143}; 144 145typedef struct ext2_struct_dblist *ext2_dblist; 146 147#define DBLIST_ABORT 1 148 149/* 150 * ext2_fileio definitions 151 */ 152 153#define EXT2_FILE_WRITE 0x0001 154#define EXT2_FILE_CREATE 0x0002 155 156#define EXT2_FILE_MASK 0x00FF 157 158#define EXT2_FILE_BUF_DIRTY 0x4000 159#define EXT2_FILE_BUF_VALID 0x2000 160 161typedef struct ext2_file *ext2_file_t; 162 163#define EXT2_SEEK_SET 0 164#define EXT2_SEEK_CUR 1 165#define EXT2_SEEK_END 2 166 167/* 168 * Flags for the ext2_filsys structure and for ext2fs_open() 169 */ 170#define EXT2_FLAG_RW 0x01 171#define EXT2_FLAG_CHANGED 0x02 172#define EXT2_FLAG_DIRTY 0x04 173#define EXT2_FLAG_VALID 0x08 174#define EXT2_FLAG_IB_DIRTY 0x10 175#define EXT2_FLAG_BB_DIRTY 0x20 176#define EXT2_FLAG_SWAP_BYTES 0x40 177#define EXT2_FLAG_SWAP_BYTES_READ 0x80 178#define EXT2_FLAG_SWAP_BYTES_WRITE 0x100 179#define EXT2_FLAG_MASTER_SB_ONLY 0x200 180#define EXT2_FLAG_FORCE 0x400 181#define EXT2_FLAG_SUPER_ONLY 0x800 182#define EXT2_FLAG_JOURNAL_DEV_OK 0x1000 183#define EXT2_FLAG_IMAGE_FILE 0x2000 184 185/* 186 * Special flag in the ext2 inode i_flag field that means that this is 187 * a new inode. (So that ext2_write_inode() can clear extra fields.) 188 */ 189#define EXT2_NEW_INODE_FL 0x80000000 190 191/* 192 * Flags for mkjournal 193 * 194 * EXT2_MKJOURNAL_V1_SUPER Make a (deprecated) V1 journal superblock 195 */ 196#define EXT2_MKJOURNAL_V1_SUPER 0x0000001 197 198struct struct_ext2_filsys { 199 errcode_t magic; 200 io_channel io; 201 int flags; 202 char * device_name; 203 struct ext2_super_block * super; 204 int blocksize; 205 int fragsize; 206 dgrp_t group_desc_count; 207 unsigned long desc_blocks; 208 struct ext2_group_desc * group_desc; 209 int inode_blocks_per_group; 210 ext2fs_inode_bitmap inode_map; 211 ext2fs_block_bitmap block_map; 212 errcode_t (*get_blocks)(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); 213 errcode_t (*check_directory)(ext2_filsys fs, ext2_ino_t ino); 214 errcode_t (*write_bitmaps)(ext2_filsys fs); 215 errcode_t (*read_inode)(ext2_filsys fs, ext2_ino_t ino, 216 struct ext2_inode *inode); 217 errcode_t (*write_inode)(ext2_filsys fs, ext2_ino_t ino, 218 struct ext2_inode *inode); 219 ext2_badblocks_list badblocks; 220 ext2_dblist dblist; 221 __u32 stride; /* for mke2fs */ 222 struct ext2_super_block * orig_super; 223 struct ext2_image_hdr * image_header; 224 __u32 umask; 225 /* 226 * Reserved for future expansion 227 */ 228 __u32 reserved[8]; 229 230 /* 231 * Reserved for the use of the calling application. 232 */ 233 void * priv_data; 234 235 /* 236 * Inode cache 237 */ 238 struct ext2_inode_cache *icache; 239}; 240 241#if EXT2_FLAT_INCLUDES 242#include "e2_bitops.h" 243#else 244#include <ext2fs/bitops.h> 245#endif 246 247/* 248 * Return flags for the block iterator functions 249 */ 250#define BLOCK_CHANGED 1 251#define BLOCK_ABORT 2 252#define BLOCK_ERROR 4 253 254/* 255 * Block interate flags 256 * 257 * BLOCK_FLAG_APPEND, or BLOCK_FLAG_HOLE, indicates that the interator 258 * function should be called on blocks where the block number is zero. 259 * This is used by ext2fs_expand_dir() to be able to add a new block 260 * to an inode. It can also be used for programs that want to be able 261 * to deal with files that contain "holes". 262 * 263 * BLOCK_FLAG_TRAVERSE indicates that the iterator function for the 264 * indirect, doubly indirect, etc. blocks should be called after all 265 * of the blocks containined in the indirect blocks are processed. 266 * This is useful if you are going to be deallocating blocks from an 267 * inode. 268 * 269 * BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be 270 * called for data blocks only. 271 * 272 * BLOCK_FLAG_NO_LARGE is for internal use only. It informs 273 * ext2fs_block_iterate2 that large files won't be accepted. 274 */ 275#define BLOCK_FLAG_APPEND 1 276#define BLOCK_FLAG_HOLE 1 277#define BLOCK_FLAG_DEPTH_TRAVERSE 2 278#define BLOCK_FLAG_DATA_ONLY 4 279 280#define BLOCK_FLAG_NO_LARGE 0x1000 281 282/* 283 * Magic "block count" return values for the block iterator function. 284 */ 285#define BLOCK_COUNT_IND (-1) 286#define BLOCK_COUNT_DIND (-2) 287#define BLOCK_COUNT_TIND (-3) 288#define BLOCK_COUNT_TRANSLATOR (-4) 289 290#if 0 291/* 292 * Flags for ext2fs_move_blocks 293 */ 294#define EXT2_BMOVE_GET_DBLIST 0x0001 295#define EXT2_BMOVE_DEBUG 0x0002 296#endif 297 298/* 299 * Flags for directory block reading and writing functions 300 */ 301#define EXT2_DIRBLOCK_V2_STRUCT 0x0001 302 303/* 304 * Return flags for the directory iterator functions 305 */ 306#define DIRENT_CHANGED 1 307#define DIRENT_ABORT 2 308#define DIRENT_ERROR 3 309 310/* 311 * Directory iterator flags 312 */ 313 314#define DIRENT_FLAG_INCLUDE_EMPTY 1 315#define DIRENT_FLAG_INCLUDE_REMOVED 2 316 317#define DIRENT_DOT_FILE 1 318#define DIRENT_DOT_DOT_FILE 2 319#define DIRENT_OTHER_FILE 3 320#define DIRENT_DELETED_FILE 4 321 322/* 323 * Inode scan definitions 324 */ 325typedef struct ext2_struct_inode_scan *ext2_inode_scan; 326 327/* 328 * ext2fs_scan flags 329 */ 330#define EXT2_SF_CHK_BADBLOCKS 0x0001 331#define EXT2_SF_BAD_INODE_BLK 0x0002 332#define EXT2_SF_BAD_EXTRA_BYTES 0x0004 333#define EXT2_SF_SKIP_MISSING_ITABLE 0x0008 334 335/* 336 * ext2fs_check_if_mounted flags 337 */ 338#define EXT2_MF_MOUNTED 1 339#define EXT2_MF_ISROOT 2 340#define EXT2_MF_READONLY 4 341#define EXT2_MF_SWAP 8 342 343/* 344 * Ext2/linux mode flags. We define them here so that we don't need 345 * to depend on the OS's sys/stat.h, since we may be compiling on a 346 * non-Linux system. 347 */ 348#define LINUX_S_IFMT 00170000 349#define LINUX_S_IFSOCK 0140000 350#define LINUX_S_IFLNK 0120000 351#define LINUX_S_IFREG 0100000 352#define LINUX_S_IFBLK 0060000 353#define LINUX_S_IFDIR 0040000 354#define LINUX_S_IFCHR 0020000 355#define LINUX_S_IFIFO 0010000 356#define LINUX_S_ISUID 0004000 357#define LINUX_S_ISGID 0002000 358#define LINUX_S_ISVTX 0001000 359 360#define LINUX_S_IRWXU 00700 361#define LINUX_S_IRUSR 00400 362#define LINUX_S_IWUSR 00200 363#define LINUX_S_IXUSR 00100 364 365#define LINUX_S_IRWXG 00070 366#define LINUX_S_IRGRP 00040 367#define LINUX_S_IWGRP 00020 368#define LINUX_S_IXGRP 00010 369 370#define LINUX_S_IRWXO 00007 371#define LINUX_S_IROTH 00004 372#define LINUX_S_IWOTH 00002 373#define LINUX_S_IXOTH 00001 374 375#define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK) 376#define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG) 377#define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR) 378#define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR) 379#define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK) 380#define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO) 381#define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK) 382 383/* 384 * ext2 size of an inode 385 */ 386#define EXT2_I_SIZE(i) ((i)->i_size | ((__u64) (i)->i_size_high << 32)) 387 388/* 389 * ext2_icount_t abstraction 390 */ 391#define EXT2_ICOUNT_OPT_INCREMENT 0x01 392 393typedef struct ext2_icount *ext2_icount_t; 394 395/* 396 * Flags for ext2fs_bmap 397 */ 398#define BMAP_ALLOC 1 399 400/* 401 * Flags for imager.c functions 402 */ 403#define IMAGER_FLAG_INODEMAP 1 404#define IMAGER_FLAG_SPARSEWRITE 2 405 406/* 407 * For checking structure magic numbers... 408 */ 409 410#define EXT2_CHECK_MAGIC(struct, code) \ 411 if ((struct)->magic != (code)) return (code) 412 413 414/* 415 * For ext2 compression support 416 */ 417#define EXT2FS_COMPRESSED_BLKADDR ((blk_t) 0xffffffff) 418#define HOLE_BLKADDR(_b) ((_b) == 0 || (_b) == EXT2FS_COMPRESSED_BLKADDR) 419 420/* 421 * Features supported by this version of the library 422 */ 423#define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\ 424 EXT2_FEATURE_COMPAT_IMAGIC_INODES|\ 425 EXT3_FEATURE_COMPAT_HAS_JOURNAL|\ 426 EXT2_FEATURE_COMPAT_DIR_INDEX|\ 427 EXT2_FEATURE_COMPAT_EXT_ATTR) 428 429/* This #ifdef is temporary until compression is fully supported */ 430#ifdef ENABLE_COMPRESSION 431#ifndef I_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL 432/* If the below warning bugs you, then have 433 `CPPFLAGS=-DI_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL' in your 434 environment at configure time. */ 435 #warning "Compression support is experimental" 436#endif 437#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 438 EXT2_FEATURE_INCOMPAT_COMPRESSION|\ 439 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 440 EXT2_FEATURE_INCOMPAT_META_BG|\ 441 EXT3_FEATURE_INCOMPAT_RECOVER) 442#else 443#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 444 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 445 EXT2_FEATURE_INCOMPAT_META_BG|\ 446 EXT3_FEATURE_INCOMPAT_RECOVER) 447#endif 448#define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\ 449 EXT2_FEATURE_RO_COMPAT_LARGE_FILE) 450/* 451 * function prototypes 452 */ 453 454/* alloc.c */ 455extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode, 456 ext2fs_inode_bitmap map, ext2_ino_t *ret); 457extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal, 458 ext2fs_block_bitmap map, blk_t *ret); 459extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start, 460 blk_t finish, int num, 461 ext2fs_block_bitmap map, 462 blk_t *ret); 463extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal, 464 char *block_buf, blk_t *ret); 465 466/* alloc_stats.c */ 467void ext2fs_inode_alloc_stats(ext2_filsys fs, ext2_ino_t ino, int inuse); 468void ext2fs_inode_alloc_stats2(ext2_filsys fs, ext2_ino_t ino, 469 int inuse, int isdir); 470void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse); 471 472/* alloc_tables.c */ 473extern errcode_t ext2fs_allocate_tables(ext2_filsys fs); 474extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group, 475 ext2fs_block_bitmap bmap); 476 477/* badblocks.c */ 478extern errcode_t ext2fs_u32_list_create(ext2_u32_list *ret, int size); 479extern errcode_t ext2fs_u32_list_add(ext2_u32_list bb, __u32 blk); 480extern int ext2fs_u32_list_test(ext2_u32_list bb, blk_t blk); 481extern errcode_t ext2fs_u32_list_iterate_begin(ext2_u32_list bb, 482 ext2_u32_iterate *ret); 483extern int ext2fs_u32_list_iterate(ext2_u32_iterate iter, blk_t *blk); 484extern void ext2fs_u32_list_iterate_end(ext2_u32_iterate iter); 485extern errcode_t ext2fs_u32_copy(ext2_u32_list src, ext2_u32_list *dest); 486extern int ext2fs_u32_list_equal(ext2_u32_list bb1, ext2_u32_list bb2); 487 488extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret, 489 int size); 490extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb, 491 blk_t blk); 492extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb, 493 blk_t blk); 494extern int ext2fs_u32_list_del(ext2_u32_list bb, __u32 blk); 495extern void ext2fs_badblocks_list_del(ext2_u32_list bb, __u32 blk); 496extern errcode_t 497 ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb, 498 ext2_badblocks_iterate *ret); 499extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter, 500 blk_t *blk); 501extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter); 502extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src, 503 ext2_badblocks_list *dest); 504extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1, 505 ext2_badblocks_list bb2); 506extern int ext2fs_u32_list_count(ext2_u32_list bb); 507 508/* bb_compat */ 509extern errcode_t badblocks_list_create(badblocks_list *ret, int size); 510extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk); 511extern int badblocks_list_test(badblocks_list bb, blk_t blk); 512extern errcode_t badblocks_list_iterate_begin(badblocks_list bb, 513 badblocks_iterate *ret); 514extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk); 515extern void badblocks_list_iterate_end(badblocks_iterate iter); 516extern void badblocks_list_free(badblocks_list bb); 517 518/* bb_inode.c */ 519extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs, 520 ext2_badblocks_list bb_list); 521 522/* bitmaps.c */ 523extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs); 524extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs); 525extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs); 526extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs); 527extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start, 528 __u32 end, 529 __u32 real_end, 530 const char *descr, 531 ext2fs_generic_bitmap *ret); 532extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs, 533 const char *descr, 534 ext2fs_block_bitmap *ret); 535extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs, 536 const char *descr, 537 ext2fs_inode_bitmap *ret); 538extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap, 539 ext2_ino_t end, ext2_ino_t *oend); 540extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap, 541 blk_t end, blk_t *oend); 542extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap); 543extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap); 544extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs); 545extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs); 546 547/* block.c */ 548extern errcode_t ext2fs_block_iterate(ext2_filsys fs, 549 ext2_ino_t ino, 550 int flags, 551 char *block_buf, 552 int (*func)(ext2_filsys fs, 553 blk_t *blocknr, 554 int blockcnt, 555 void *priv_data), 556 void *priv_data); 557errcode_t ext2fs_block_iterate2(ext2_filsys fs, 558 ext2_ino_t ino, 559 int flags, 560 char *block_buf, 561 int (*func)(ext2_filsys fs, 562 blk_t *blocknr, 563 e2_blkcnt_t blockcnt, 564 blk_t ref_blk, 565 int ref_offset, 566 void *priv_data), 567 void *priv_data); 568 569/* bmap.c */ 570extern errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino, 571 struct ext2_inode *inode, 572 char *block_buf, int bmap_flags, 573 blk_t block, blk_t *phys_blk); 574 575 576#if 0 577/* bmove.c */ 578extern errcode_t ext2fs_move_blocks(ext2_filsys fs, 579 ext2fs_block_bitmap reserve, 580 ext2fs_block_bitmap alloc_map, 581 int flags); 582#endif 583 584/* check_desc.c */ 585extern errcode_t ext2fs_check_desc(ext2_filsys fs); 586 587/* closefs.c */ 588extern errcode_t ext2fs_close(ext2_filsys fs); 589extern errcode_t ext2fs_flush(ext2_filsys fs); 590extern int ext2fs_bg_has_super(ext2_filsys fs, int group_block); 591extern void ext2fs_update_dynamic_rev(ext2_filsys fs); 592 593/* cmp_bitmaps.c */ 594extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1, 595 ext2fs_block_bitmap bm2); 596extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1, 597 ext2fs_inode_bitmap bm2); 598 599/* dblist.c */ 600 601extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs); 602extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist); 603extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ext2_ino_t ino, 604 blk_t blk, int blockcnt); 605extern void ext2fs_dblist_sort(ext2_dblist dblist, 606 EXT2_QSORT_TYPE (*sortfunc)(const void *, 607 const void *)); 608extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist, 609 int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info, 610 void *priv_data), 611 void *priv_data); 612extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ext2_ino_t ino, 613 blk_t blk, int blockcnt); 614extern errcode_t ext2fs_copy_dblist(ext2_dblist src, 615 ext2_dblist *dest); 616extern int ext2fs_dblist_count(ext2_dblist dblist); 617 618/* dblist_dir.c */ 619extern errcode_t 620 ext2fs_dblist_dir_iterate(ext2_dblist dblist, 621 int flags, 622 char *block_buf, 623 int (*func)(ext2_ino_t dir, 624 int entry, 625 struct ext2_dir_entry *dirent, 626 int offset, 627 int blocksize, 628 char *buf, 629 void *priv_data), 630 void *priv_data); 631 632/* dirblock.c */ 633extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block, 634 void *buf); 635extern errcode_t ext2fs_read_dir_block2(ext2_filsys fs, blk_t block, 636 void *buf, int flags); 637extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block, 638 void *buf); 639extern errcode_t ext2fs_write_dir_block2(ext2_filsys fs, blk_t block, 640 void *buf, int flags); 641 642/* dirhash.c */ 643extern errcode_t ext2fs_dirhash(int version, const char *name, int len, 644 const __u32 *seed, 645 ext2_dirhash_t *ret_hash, 646 ext2_dirhash_t *ret_minor_hash); 647 648 649/* dir_iterate.c */ 650extern errcode_t ext2fs_dir_iterate(ext2_filsys fs, 651 ext2_ino_t dir, 652 int flags, 653 char *block_buf, 654 int (*func)(struct ext2_dir_entry *dirent, 655 int offset, 656 int blocksize, 657 char *buf, 658 void *priv_data), 659 void *priv_data); 660extern errcode_t ext2fs_dir_iterate2(ext2_filsys fs, 661 ext2_ino_t dir, 662 int flags, 663 char *block_buf, 664 int (*func)(ext2_ino_t dir, 665 int entry, 666 struct ext2_dir_entry *dirent, 667 int offset, 668 int blocksize, 669 char *buf, 670 void *priv_data), 671 void *priv_data); 672 673/* dupfs.c */ 674extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest); 675 676/* expanddir.c */ 677extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir); 678 679/* ext_attr.c */ 680void ext2fs_swap_ext_attr(ext2_filsys fs, char *to, char *from); 681extern errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf); 682extern errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block, 683 void *buf); 684extern errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk, 685 char *block_buf, 686 int adjust, __u32 *newcount); 687 688/* fileio.c */ 689extern errcode_t ext2fs_file_open(ext2_filsys fs, ext2_ino_t ino, 690 int flags, ext2_file_t *ret); 691extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file); 692extern errcode_t ext2fs_file_close(ext2_file_t file); 693extern errcode_t ext2fs_file_flush(ext2_file_t file); 694extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf, 695 unsigned int wanted, unsigned int *got); 696extern errcode_t ext2fs_file_write(ext2_file_t file, const void *buf, 697 unsigned int nbytes, unsigned int *written); 698extern errcode_t ext2fs_file_llseek(ext2_file_t file, __u64 offset, 699 int whence, __u64 *ret_pos); 700extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset, 701 int whence, ext2_off_t *ret_pos); 702errcode_t ext2fs_file_get_lsize(ext2_file_t file, __u64 *ret_size); 703extern ext2_off_t ext2fs_file_get_size(ext2_file_t file); 704extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size); 705 706/* finddev.c */ 707extern char *ext2fs_find_block_device(dev_t device); 708 709/* flushb.c */ 710extern errcode_t ext2fs_sync_device(int fd, int flushb); 711 712/* freefs.c */ 713extern void ext2fs_free(ext2_filsys fs); 714extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap); 715extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap); 716extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap); 717extern void ext2fs_free_dblist(ext2_dblist dblist); 718extern void ext2fs_badblocks_list_free(ext2_badblocks_list bb); 719extern void ext2fs_u32_list_free(ext2_u32_list bb); 720 721/* getsize.c */ 722extern errcode_t ext2fs_get_device_size(const char *file, int blocksize, 723 blk_t *retblocks); 724 725/* getsectsize.c */ 726errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize); 727 728/* imager.c */ 729extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags); 730extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags); 731extern errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd, int flags); 732extern errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd, int flags); 733extern errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags); 734extern errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags); 735 736/* initialize.c */ 737extern errcode_t ext2fs_initialize(const char *name, int flags, 738 struct ext2_super_block *param, 739 io_manager manager, ext2_filsys *ret_fs); 740 741/* icount.c */ 742extern void ext2fs_free_icount(ext2_icount_t icount); 743extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags, int size, 744 ext2_icount_t hint, ext2_icount_t *ret); 745extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags, int size, 746 ext2_icount_t *ret); 747extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ext2_ino_t ino, 748 __u16 *ret); 749extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ext2_ino_t ino, 750 __u16 *ret); 751extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ext2_ino_t ino, 752 __u16 *ret); 753extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ext2_ino_t ino, 754 __u16 count); 755extern ext2_ino_t ext2fs_get_icount_size(ext2_icount_t icount); 756errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *); 757 758/* inode.c */ 759extern errcode_t ext2fs_flush_icache(ext2_filsys fs); 760extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks, 761 ext2_inode_scan *ret_scan); 762extern void ext2fs_close_inode_scan(ext2_inode_scan scan); 763extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino, 764 struct ext2_inode *inode); 765extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan, 766 int group); 767extern void ext2fs_set_inode_callback 768 (ext2_inode_scan scan, 769 errcode_t (*done_group)(ext2_filsys fs, 770 ext2_inode_scan scan, 771 dgrp_t group, 772 void * priv_data), 773 void *done_group_data); 774extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags, 775 int clear_flags); 776extern errcode_t ext2fs_read_inode (ext2_filsys fs, ext2_ino_t ino, 777 struct ext2_inode * inode); 778extern errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino, 779 struct ext2_inode * inode); 780extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); 781extern errcode_t ext2fs_check_directory(ext2_filsys fs, ext2_ino_t ino); 782 783/* inode_io.c */ 784extern io_manager inode_io_manager; 785extern errcode_t ext2fs_inode_io_intern(ext2_filsys fs, ext2_ino_t ino, 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 int block_size, io_manager manager, 826 ext2_filsys *ret_fs); 827extern blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block, 828 dgrp_t i); 829 830/* get_pathname.c */ 831extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino, 832 char **name); 833 834/* link.c */ 835errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name, 836 ext2_ino_t ino, int flags); 837errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir, const char *name, 838 ext2_ino_t ino, int flags); 839 840/* read_bb.c */ 841extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs, 842 ext2_badblocks_list *bb_list); 843 844/* read_bb_file.c */ 845extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f, 846 ext2_badblocks_list *bb_list, 847 void *priv_data, 848 void (*invalid)(ext2_filsys fs, 849 blk_t blk, 850 char *badstr, 851 void *priv_data)); 852extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f, 853 ext2_badblocks_list *bb_list, 854 void (*invalid)(ext2_filsys fs, 855 blk_t blk)); 856 857/* rs_bitmap.c */ 858extern errcode_t ext2fs_resize_generic_bitmap(__u32 new_end, 859 __u32 new_real_end, 860 ext2fs_generic_bitmap bmap); 861extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end, 862 ext2fs_inode_bitmap bmap); 863extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end, 864 ext2fs_block_bitmap bmap); 865extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src, 866 ext2fs_generic_bitmap *dest); 867 868/* swapfs.c */ 869extern void ext2fs_swap_super(struct ext2_super_block * super); 870extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp); 871extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t, 872 struct ext2_inode *f, int hostorder); 873 874/* valid_blk.c */ 875extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode); 876 877/* version.c */ 878extern int ext2fs_parse_version_string(const char *ver_string); 879extern int ext2fs_get_library_version(const char **ver_string, 880 const char **date_string); 881 882/* write_bb_file.c */ 883extern errcode_t ext2fs_write_bb_FILE(ext2_badblocks_list bb_list, 884 unsigned int flags, 885 FILE *f); 886 887 888/* inline functions */ 889extern errcode_t ext2fs_get_mem(unsigned long size, void **ptr); 890extern errcode_t ext2fs_free_mem(void **ptr); 891extern errcode_t ext2fs_resize_mem(unsigned long old_size, 892 unsigned long size, void **ptr); 893extern void ext2fs_mark_super_dirty(ext2_filsys fs); 894extern void ext2fs_mark_changed(ext2_filsys fs); 895extern int ext2fs_test_changed(ext2_filsys fs); 896extern void ext2fs_mark_valid(ext2_filsys fs); 897extern void ext2fs_unmark_valid(ext2_filsys fs); 898extern int ext2fs_test_valid(ext2_filsys fs); 899extern void ext2fs_mark_ib_dirty(ext2_filsys fs); 900extern void ext2fs_mark_bb_dirty(ext2_filsys fs); 901extern int ext2fs_test_ib_dirty(ext2_filsys fs); 902extern int ext2fs_test_bb_dirty(ext2_filsys fs); 903extern int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk); 904extern int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino); 905extern blk_t ext2fs_inode_data_blocks(ext2_filsys fs, 906 struct ext2_inode *inode); 907 908/* 909 * The actual inlined functions definitions themselves... 910 * 911 * If NO_INLINE_FUNCS is defined, then we won't try to do inline 912 * functions at all! 913 */ 914#if (defined(INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS)) 915#ifdef INCLUDE_INLINE_FUNCS 916#define _INLINE_ extern 917#else 918#ifdef __GNUC__ 919#define _INLINE_ extern __inline__ 920#else /* For Watcom C */ 921#define _INLINE_ extern inline 922#endif 923#endif 924 925#ifndef EXT2_CUSTOM_MEMORY_ROUTINES 926/* 927 * Allocate memory 928 */ 929_INLINE_ errcode_t ext2fs_get_mem(unsigned long size, void **ptr) 930{ 931 *ptr = malloc(size); 932 if (!*ptr) 933 return EXT2_ET_NO_MEMORY; 934 return 0; 935} 936 937/* 938 * Free memory 939 */ 940_INLINE_ errcode_t ext2fs_free_mem(void **ptr) 941{ 942 free(*ptr); 943 *ptr = 0; 944 return 0; 945} 946 947/* 948 * Resize memory 949 */ 950_INLINE_ errcode_t ext2fs_resize_mem(unsigned long old_size, 951 unsigned long size, void **ptr) 952{ 953 void *p; 954 955 p = realloc(*ptr, size); 956 if (!p) 957 return EXT2_ET_NO_MEMORY; 958 *ptr = p; 959 return 0; 960} 961#endif /* Custom memory routines */ 962 963/* 964 * Mark a filesystem superblock as dirty 965 */ 966_INLINE_ void ext2fs_mark_super_dirty(ext2_filsys fs) 967{ 968 fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_CHANGED; 969} 970 971/* 972 * Mark a filesystem as changed 973 */ 974_INLINE_ void ext2fs_mark_changed(ext2_filsys fs) 975{ 976 fs->flags |= EXT2_FLAG_CHANGED; 977} 978 979/* 980 * Check to see if a filesystem has changed 981 */ 982_INLINE_ int ext2fs_test_changed(ext2_filsys fs) 983{ 984 return (fs->flags & EXT2_FLAG_CHANGED); 985} 986 987/* 988 * Mark a filesystem as valid 989 */ 990_INLINE_ void ext2fs_mark_valid(ext2_filsys fs) 991{ 992 fs->flags |= EXT2_FLAG_VALID; 993} 994 995/* 996 * Mark a filesystem as NOT valid 997 */ 998_INLINE_ void ext2fs_unmark_valid(ext2_filsys fs) 999{ 1000 fs->flags &= ~EXT2_FLAG_VALID; 1001} 1002 1003/* 1004 * Check to see if a filesystem is valid 1005 */ 1006_INLINE_ int ext2fs_test_valid(ext2_filsys fs) 1007{ 1008 return (fs->flags & EXT2_FLAG_VALID); 1009} 1010 1011/* 1012 * Mark the inode bitmap as dirty 1013 */ 1014_INLINE_ void ext2fs_mark_ib_dirty(ext2_filsys fs) 1015{ 1016 fs->flags |= EXT2_FLAG_IB_DIRTY | EXT2_FLAG_CHANGED; 1017} 1018 1019/* 1020 * Mark the block bitmap as dirty 1021 */ 1022_INLINE_ void ext2fs_mark_bb_dirty(ext2_filsys fs) 1023{ 1024 fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_CHANGED; 1025} 1026 1027/* 1028 * Check to see if a filesystem's inode bitmap is dirty 1029 */ 1030_INLINE_ int ext2fs_test_ib_dirty(ext2_filsys fs) 1031{ 1032 return (fs->flags & EXT2_FLAG_IB_DIRTY); 1033} 1034 1035/* 1036 * Check to see if a filesystem's block bitmap is dirty 1037 */ 1038_INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs) 1039{ 1040 return (fs->flags & EXT2_FLAG_BB_DIRTY); 1041} 1042 1043/* 1044 * Return the group # of a block 1045 */ 1046_INLINE_ int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk) 1047{ 1048 return (blk - fs->super->s_first_data_block) / 1049 fs->super->s_blocks_per_group; 1050} 1051 1052/* 1053 * Return the group # of an inode number 1054 */ 1055_INLINE_ int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino) 1056{ 1057 return (ino - 1) / fs->super->s_inodes_per_group; 1058} 1059 1060_INLINE_ blk_t ext2fs_inode_data_blocks(ext2_filsys fs, 1061 struct ext2_inode *inode) 1062{ 1063 return inode->i_blocks - 1064 (inode->i_file_acl ? fs->blocksize >> 9 : 0); 1065} 1066#undef _INLINE_ 1067#endif 1068 1069#ifdef __cplusplus 1070} 1071#endif 1072 1073#endif /* _EXT2FS_EXT2FS_H */ 1074