ext2fs.h revision a78926effb15bbabb1c0ed3e438b03be25c4d48c
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 * 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 <stdlib.h> 47 48#if EXT2_FLAT_INCLUDES 49#include "e2_types.h" 50#else 51#include <asm/types.h> 52#if !defined(__GNUC__) || defined(__STRICT_ANSI__) /* asm/types.h already defines __s64 and __u64 otherwise */ 53#if SIZEOF_LONG == 8 54typedef __signed__ long __s64; 55typedef unsigned long __u64; 56#elif SIZEOF_LONG_LONG == 8 || \ 57 defined(__GNUC__) && (((~0UL) == 0xffffffff) || defined(__i386__)) 58typedef __signed__ long long __s64; 59typedef unsigned long long __u64; 60#endif /* SIZEOF_LONG == 8 */ 61#endif 62#endif /* EXT2_FLAT_INCLUDES */ 63 64typedef __u32 ext2_ino_t; 65typedef __u32 blk_t; 66typedef __u32 dgrp_t; 67typedef __u32 ext2_off_t; 68typedef __s64 e2_blkcnt_t; 69 70#if EXT2_FLAT_INCLUDES 71#include "com_err.h" 72#include "ext2_io.h" 73#include "ext2_err.h" 74#else 75#include "et/com_err.h" 76#include "ext2fs/ext2_io.h" 77#include "ext2fs/ext2_err.h" 78#endif 79 80/* 81 * Portability help for Microsoft Visual C++ 82 */ 83#ifdef _MSC_VER 84#define EXT2_QSORT_TYPE int __cdecl 85#else 86#define EXT2_QSORT_TYPE int 87#endif 88 89typedef struct struct_ext2_filsys *ext2_filsys; 90 91struct ext2fs_struct_generic_bitmap { 92 errcode_t magic; 93 ext2_filsys fs; 94 __u32 start, end; 95 __u32 real_end; 96 char * description; 97 char * bitmap; 98 errcode_t base_error_code; 99 __u32 reserved[7]; 100}; 101 102#define EXT2FS_MARK_ERROR 0 103#define EXT2FS_UNMARK_ERROR 1 104#define EXT2FS_TEST_ERROR 2 105 106typedef struct ext2fs_struct_generic_bitmap *ext2fs_generic_bitmap; 107typedef struct ext2fs_struct_generic_bitmap *ext2fs_inode_bitmap; 108typedef struct ext2fs_struct_generic_bitmap *ext2fs_block_bitmap; 109 110#ifdef EXT2_DYNAMIC_REV 111#define EXT2_FIRST_INODE(s) EXT2_FIRST_INO(s) 112#else 113#define EXT2_FIRST_INODE(s) EXT2_FIRST_INO 114#define EXT2_INODE_SIZE(s) sizeof(struct ext2_inode) 115#endif 116 117/* 118 * badblocks list definitions 119 */ 120 121typedef struct ext2_struct_badblocks_list *ext2_badblocks_list; 122typedef struct ext2_struct_badblocks_iterate *ext2_badblocks_iterate; 123 124/* old */ 125typedef struct ext2_struct_badblocks_list *badblocks_list; 126typedef struct ext2_struct_badblocks_iterate *badblocks_iterate; 127 128#define BADBLOCKS_FLAG_DIRTY 1 129 130/* 131 * ext2_dblist structure and abstractions (see dblist.c) 132 */ 133struct ext2_db_entry { 134 ext2_ino_t ino; 135 blk_t blk; 136 int blockcnt; 137}; 138 139typedef struct ext2_struct_dblist *ext2_dblist; 140 141#define DBLIST_ABORT 1 142 143/* 144 * ext2_fileio definitions 145 */ 146 147#define EXT2_FILE_WRITE 0x0001 148#define EXT2_FILE_CREATE 0x0002 149 150#define EXT2_FILE_MASK 0x00FF 151 152#define EXT2_FILE_BUF_DIRTY 0x4000 153#define EXT2_FILE_BUF_VALID 0x2000 154 155typedef struct ext2_file *ext2_file_t; 156 157#define EXT2_SEEK_SET 0 158#define EXT2_SEEK_CUR 1 159#define EXT2_SEEK_END 2 160 161/* 162 * Flags for the ext2_filsys structure and for ext2fs_open() 163 */ 164#define EXT2_FLAG_RW 0x01 165#define EXT2_FLAG_CHANGED 0x02 166#define EXT2_FLAG_DIRTY 0x04 167#define EXT2_FLAG_VALID 0x08 168#define EXT2_FLAG_IB_DIRTY 0x10 169#define EXT2_FLAG_BB_DIRTY 0x20 170#define EXT2_FLAG_SWAP_BYTES 0x40 171#define EXT2_FLAG_SWAP_BYTES_READ 0x80 172#define EXT2_FLAG_SWAP_BYTES_WRITE 0x100 173#define EXT2_FLAG_MASTER_SB_ONLY 0x200 174#define EXT2_FLAG_FORCE 0x400 175#define EXT2_FLAG_SUPER_ONLY 0x800 176#define EXT2_FLAG_JOURNAL_DEV_OK 0x1000 177#define EXT2_FLAG_IMAGE_FILE 0x2000 178 179/* 180 * Special flag in the ext2 inode i_flag field that means that this is 181 * a new inode. (So that ext2_write_inode() can clear extra fields.) 182 */ 183#define EXT2_NEW_INODE_FL 0x80000000 184 185/* 186 * Flags for mkjournal 187 * 188 * EXT2_MKJOURNAL_V1_SUPER Make a (deprecated) V1 journal superblock 189 */ 190#define EXT2_MKJOURNAL_V1_SUPER 0x0000001 191 192struct struct_ext2_filsys { 193 errcode_t magic; 194 io_channel io; 195 int flags; 196 char * device_name; 197 struct ext2_super_block * super; 198 int blocksize; 199 int fragsize; 200 dgrp_t group_desc_count; 201 unsigned long desc_blocks; 202 struct ext2_group_desc * group_desc; 203 int inode_blocks_per_group; 204 ext2fs_inode_bitmap inode_map; 205 ext2fs_block_bitmap block_map; 206 errcode_t (*get_blocks)(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); 207 errcode_t (*check_directory)(ext2_filsys fs, ext2_ino_t ino); 208 errcode_t (*write_bitmaps)(ext2_filsys fs); 209 errcode_t (*read_inode)(ext2_filsys fs, ext2_ino_t ino, 210 struct ext2_inode *inode); 211 errcode_t (*write_inode)(ext2_filsys fs, ext2_ino_t ino, 212 struct ext2_inode *inode); 213 badblocks_list badblocks; 214 ext2_dblist dblist; 215 __u32 stride; /* for mke2fs */ 216 struct ext2_super_block * orig_super; 217 struct ext2_image_hdr * image_header; 218 /* 219 * Reserved for future expansion 220 */ 221 __u32 reserved[9]; 222 223 /* 224 * Reserved for the use of the calling application. 225 */ 226 void * priv_data; 227 228 /* 229 * Inode cache 230 */ 231 struct ext2_inode_cache *icache; 232}; 233 234#if EXT2_FLAT_INCLUDES 235#include "e2_bitops.h" 236#else 237#include "ext2fs/bitops.h" 238#endif 239 240/* 241 * Return flags for the block iterator functions 242 */ 243#define BLOCK_CHANGED 1 244#define BLOCK_ABORT 2 245#define BLOCK_ERROR 4 246 247/* 248 * Block interate flags 249 * 250 * BLOCK_FLAG_APPEND, or BLOCK_FLAG_HOLE, indicates that the interator 251 * function should be called on blocks where the block number is zero. 252 * This is used by ext2fs_expand_dir() to be able to add a new block 253 * to an inode. It can also be used for programs that want to be able 254 * to deal with files that contain "holes". 255 * 256 * BLOCK_FLAG_TRAVERSE indicates that the iterator function for the 257 * indirect, doubly indirect, etc. blocks should be called after all 258 * of the blocks containined in the indirect blocks are processed. 259 * This is useful if you are going to be deallocating blocks from an 260 * inode. 261 * 262 * BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be 263 * called for data blocks only. 264 * 265 * BLOCK_FLAG_NO_LARGE is for internal use only. It informs 266 * ext2fs_block_iterate2 that large files won't be accepted. 267 */ 268#define BLOCK_FLAG_APPEND 1 269#define BLOCK_FLAG_HOLE 1 270#define BLOCK_FLAG_DEPTH_TRAVERSE 2 271#define BLOCK_FLAG_DATA_ONLY 4 272 273#define BLOCK_FLAG_NO_LARGE 0x1000 274 275/* 276 * Magic "block count" return values for the block iterator function. 277 */ 278#define BLOCK_COUNT_IND (-1) 279#define BLOCK_COUNT_DIND (-2) 280#define BLOCK_COUNT_TIND (-3) 281#define BLOCK_COUNT_TRANSLATOR (-4) 282 283#if 0 284/* 285 * Flags for ext2fs_move_blocks 286 */ 287#define EXT2_BMOVE_GET_DBLIST 0x0001 288#define EXT2_BMOVE_DEBUG 0x0002 289#endif 290 291/* 292 * Return flags for the directory iterator functions 293 */ 294#define DIRENT_CHANGED 1 295#define DIRENT_ABORT 2 296#define DIRENT_ERROR 3 297 298/* 299 * Directory iterator flags 300 */ 301 302#define DIRENT_FLAG_INCLUDE_EMPTY 1 303 304 305#define DIRENT_DOT_FILE 1 306#define DIRENT_DOT_DOT_FILE 2 307#define DIRENT_OTHER_FILE 3 308 309/* 310 * Inode scan definitions 311 */ 312typedef struct ext2_struct_inode_scan *ext2_inode_scan; 313 314/* 315 * ext2fs_scan flags 316 */ 317#define EXT2_SF_CHK_BADBLOCKS 0x0001 318#define EXT2_SF_BAD_INODE_BLK 0x0002 319#define EXT2_SF_BAD_EXTRA_BYTES 0x0004 320#define EXT2_SF_SKIP_MISSING_ITABLE 0x0008 321 322/* 323 * ext2fs_check_if_mounted flags 324 */ 325#define EXT2_MF_MOUNTED 1 326#define EXT2_MF_ISROOT 2 327#define EXT2_MF_READONLY 4 328 329/* 330 * Ext2/linux mode flags. We define them here so that we don't need 331 * to depend on the OS's sys/stat.h, since we may be compiling on a 332 * non-Linux system. 333 */ 334#define LINUX_S_IFMT 00170000 335#define LINUX_S_IFSOCK 0140000 336#define LINUX_S_IFLNK 0120000 337#define LINUX_S_IFREG 0100000 338#define LINUX_S_IFBLK 0060000 339#define LINUX_S_IFDIR 0040000 340#define LINUX_S_IFCHR 0020000 341#define LINUX_S_IFIFO 0010000 342#define LINUX_S_ISUID 0004000 343#define LINUX_S_ISGID 0002000 344#define LINUX_S_ISVTX 0001000 345 346#define LINUX_S_IRWXU 00700 347#define LINUX_S_IRUSR 00400 348#define LINUX_S_IWUSR 00200 349#define LINUX_S_IXUSR 00100 350 351#define LINUX_S_IRWXG 00070 352#define LINUX_S_IRGRP 00040 353#define LINUX_S_IWGRP 00020 354#define LINUX_S_IXGRP 00010 355 356#define LINUX_S_IRWXO 00007 357#define LINUX_S_IROTH 00004 358#define LINUX_S_IWOTH 00002 359#define LINUX_S_IXOTH 00001 360 361#define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK) 362#define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG) 363#define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR) 364#define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR) 365#define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK) 366#define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO) 367#define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK) 368 369/* 370 * ext2_icount_t abstraction 371 */ 372#define EXT2_ICOUNT_OPT_INCREMENT 0x01 373 374typedef struct ext2_icount *ext2_icount_t; 375 376/* 377 * Flags for ext2fs_bmap 378 */ 379#define BMAP_ALLOC 1 380 381/* 382 * Flags for imager.c functions 383 */ 384#define IMAGER_FLAG_INODEMAP 1 385#define IMAGER_FLAG_SPARSEWRITE 2 386 387/* 388 * For checking structure magic numbers... 389 */ 390 391#define EXT2_CHECK_MAGIC(struct, code) \ 392 if ((struct)->magic != (code)) return (code) 393 394 395/* 396 * For ext2 compression support 397 */ 398#define EXT2FS_COMPRESSED_BLKADDR ((blk_t) 0xffffffff) 399#define HOLE_BLKADDR(_b) ((_b) == 0 || (_b) == EXT2FS_COMPRESSED_BLKADDR) 400 401/* 402 * Features supported by this version of the library 403 */ 404#define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\ 405 EXT2_FEATURE_COMPAT_IMAGIC_INODES|\ 406 EXT3_FEATURE_COMPAT_HAS_JOURNAL) 407 408/* This #ifdef is temporary until compression is fully supported */ 409#ifdef ENABLE_COMPRESSION 410#ifndef I_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL 411/* If the below warning bugs you, then have 412 `CPPFLAGS=-DI_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL' in your 413 environment at configure time. */ 414 #warning "Compression support is experimental" 415#endif 416#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 417 EXT2_FEATURE_INCOMPAT_COMPRESSION|\ 418 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 419 EXT3_FEATURE_INCOMPAT_RECOVER) 420#else 421#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 422 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 423 EXT3_FEATURE_INCOMPAT_RECOVER) 424#endif 425#define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\ 426 EXT2_FEATURE_RO_COMPAT_LARGE_FILE) 427/* 428 * function prototypes 429 */ 430 431/* alloc.c */ 432extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode, 433 ext2fs_inode_bitmap map, ext2_ino_t *ret); 434extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal, 435 ext2fs_block_bitmap map, blk_t *ret); 436extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start, 437 blk_t finish, int num, 438 ext2fs_block_bitmap map, 439 blk_t *ret); 440extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal, 441 char *block_buf, blk_t *ret); 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_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 errcode_t 456 ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb, 457 ext2_badblocks_iterate *ret); 458extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter, 459 blk_t *blk); 460extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter); 461extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src, 462 ext2_badblocks_list *dest); 463extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1, 464 ext2_badblocks_list bb2); 465 466/* bb_compat */ 467extern errcode_t badblocks_list_create(badblocks_list *ret, int size); 468extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk); 469extern int badblocks_list_test(badblocks_list bb, blk_t blk); 470extern errcode_t badblocks_list_iterate_begin(badblocks_list bb, 471 badblocks_iterate *ret); 472extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk); 473extern void badblocks_list_iterate_end(badblocks_iterate iter); 474extern void badblocks_list_free(badblocks_list bb); 475 476/* bb_inode.c */ 477extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs, 478 ext2_badblocks_list bb_list); 479 480/* bitmaps.c */ 481extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs); 482extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs); 483extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs); 484extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs); 485extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start, 486 __u32 end, 487 __u32 real_end, 488 const char *descr, 489 ext2fs_generic_bitmap *ret); 490extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs, 491 const char *descr, 492 ext2fs_block_bitmap *ret); 493extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs, 494 const char *descr, 495 ext2fs_inode_bitmap *ret); 496extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap, 497 ext2_ino_t end, ext2_ino_t *oend); 498extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap, 499 blk_t end, blk_t *oend); 500extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap); 501extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap); 502extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs); 503extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs); 504 505/* block.c */ 506extern errcode_t ext2fs_block_iterate(ext2_filsys fs, 507 ext2_ino_t ino, 508 int flags, 509 char *block_buf, 510 int (*func)(ext2_filsys fs, 511 blk_t *blocknr, 512 int blockcnt, 513 void *priv_data), 514 void *priv_data); 515errcode_t ext2fs_block_iterate2(ext2_filsys fs, 516 ext2_ino_t ino, 517 int flags, 518 char *block_buf, 519 int (*func)(ext2_filsys fs, 520 blk_t *blocknr, 521 e2_blkcnt_t blockcnt, 522 blk_t ref_blk, 523 int ref_offset, 524 void *priv_data), 525 void *priv_data); 526 527/* bmap.c */ 528extern errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino, 529 struct ext2_inode *inode, 530 char *block_buf, int bmap_flags, 531 blk_t block, blk_t *phys_blk); 532 533 534#if 0 535/* bmove.c */ 536extern errcode_t ext2fs_move_blocks(ext2_filsys fs, 537 ext2fs_block_bitmap reserve, 538 ext2fs_block_bitmap alloc_map, 539 int flags); 540#endif 541 542/* check_desc.c */ 543extern errcode_t ext2fs_check_desc(ext2_filsys fs); 544 545/* closefs.c */ 546extern errcode_t ext2fs_close(ext2_filsys fs); 547extern errcode_t ext2fs_flush(ext2_filsys fs); 548extern int ext2fs_bg_has_super(ext2_filsys fs, int group_block); 549extern void ext2fs_update_dynamic_rev(ext2_filsys fs); 550 551/* cmp_bitmaps.c */ 552extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1, 553 ext2fs_block_bitmap bm2); 554extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1, 555 ext2fs_inode_bitmap bm2); 556 557/* dblist.c */ 558 559extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs); 560extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist); 561extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ext2_ino_t ino, 562 blk_t blk, int blockcnt); 563extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist, 564 int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info, 565 void *priv_data), 566 void *priv_data); 567extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ext2_ino_t ino, 568 blk_t blk, int blockcnt); 569extern errcode_t ext2fs_copy_dblist(ext2_dblist src, 570 ext2_dblist *dest); 571extern int ext2fs_dblist_count(ext2_dblist dblist); 572 573/* dblist_dir.c */ 574extern errcode_t 575 ext2fs_dblist_dir_iterate(ext2_dblist dblist, 576 int flags, 577 char *block_buf, 578 int (*func)(ext2_ino_t dir, 579 int entry, 580 struct ext2_dir_entry *dirent, 581 int offset, 582 int blocksize, 583 char *buf, 584 void *priv_data), 585 void *priv_data); 586 587/* dirblock.c */ 588extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block, 589 void *buf); 590extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block, 591 void *buf); 592 593/* dir_iterate.c */ 594extern errcode_t ext2fs_dir_iterate(ext2_filsys fs, 595 ext2_ino_t dir, 596 int flags, 597 char *block_buf, 598 int (*func)(struct ext2_dir_entry *dirent, 599 int offset, 600 int blocksize, 601 char *buf, 602 void *priv_data), 603 void *priv_data); 604 605/* dupfs.c */ 606extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest); 607 608/* expanddir.c */ 609extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir); 610 611/* fileio.c */ 612extern errcode_t ext2fs_file_open(ext2_filsys fs, ext2_ino_t ino, 613 int flags, ext2_file_t *ret); 614extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file); 615extern errcode_t ext2fs_file_close(ext2_file_t file); 616extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf, 617 unsigned int wanted, unsigned int *got); 618extern errcode_t ext2fs_file_write(ext2_file_t file, void *buf, 619 unsigned int nbytes, unsigned int *written); 620extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset, 621 int whence, ext2_off_t *ret_pos); 622extern ext2_off_t ext2fs_file_get_size(ext2_file_t file); 623extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size); 624 625/* finddev.c */ 626extern char *ext2fs_find_block_device(dev_t device); 627 628/* flushb.c */ 629extern errcode_t ext2fs_sync_device(int fd, int flushb); 630 631/* freefs.c */ 632extern void ext2fs_free(ext2_filsys fs); 633extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap); 634extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap); 635extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap); 636extern void ext2fs_free_dblist(ext2_dblist dblist); 637extern void ext2fs_badblocks_list_free(badblocks_list bb); 638 639/* getsize.c */ 640extern errcode_t ext2fs_get_device_size(const char *file, int blocksize, 641 blk_t *retblocks); 642 643/* imager.c */ 644extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags); 645extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags); 646extern errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd, int flags); 647extern errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd, int flags); 648extern errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags); 649extern errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags); 650 651/* initialize.c */ 652extern errcode_t ext2fs_initialize(const char *name, int flags, 653 struct ext2_super_block *param, 654 io_manager manager, ext2_filsys *ret_fs); 655 656/* inode.c */ 657extern errcode_t ext2fs_flush_icache(ext2_filsys fs); 658extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks, 659 ext2_inode_scan *ret_scan); 660extern void ext2fs_close_inode_scan(ext2_inode_scan scan); 661extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino, 662 struct ext2_inode *inode); 663extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan, 664 int group); 665extern void ext2fs_set_inode_callback 666 (ext2_inode_scan scan, 667 errcode_t (*done_group)(ext2_filsys fs, 668 ext2_inode_scan scan, 669 dgrp_t group, 670 void * priv_data), 671 void *done_group_data); 672extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags, 673 int clear_flags); 674extern errcode_t ext2fs_read_inode (ext2_filsys fs, ext2_ino_t ino, 675 struct ext2_inode * inode); 676extern errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino, 677 struct ext2_inode * inode); 678extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); 679extern errcode_t ext2fs_check_directory(ext2_filsys fs, ext2_ino_t ino); 680 681/* icount.c */ 682extern void ext2fs_free_icount(ext2_icount_t icount); 683extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags, int size, 684 ext2_icount_t hint, ext2_icount_t *ret); 685extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags, int size, 686 ext2_icount_t *ret); 687extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ext2_ino_t ino, 688 __u16 *ret); 689extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ext2_ino_t ino, 690 __u16 *ret); 691extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ext2_ino_t ino, 692 __u16 *ret); 693extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ext2_ino_t ino, 694 __u16 count); 695extern ext2_ino_t ext2fs_get_icount_size(ext2_icount_t icount); 696errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *); 697 698/* ismounted.c */ 699extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags); 700extern errcode_t ext2fs_check_mount_point(const char *device, int *mount_flags, 701 char *mtpt, int mtlen); 702 703/* namei.c */ 704extern errcode_t ext2fs_lookup(ext2_filsys fs, ext2_ino_t dir, const char *name, 705 int namelen, char *buf, ext2_ino_t *inode); 706extern errcode_t ext2fs_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 707 const char *name, ext2_ino_t *inode); 708errcode_t ext2fs_namei_follow(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 709 const char *name, ext2_ino_t *inode); 710extern errcode_t ext2fs_follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 711 ext2_ino_t inode, ext2_ino_t *res_inode); 712 713/* native.c */ 714int ext2fs_native_flag(void); 715 716/* newdir.c */ 717extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino, 718 ext2_ino_t parent_ino, char **block); 719 720/* mkdir.c */ 721extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum, 722 const char *name); 723 724/* mkjournal.c */ 725extern errcode_t ext2fs_create_journal_superblock(ext2_filsys fs, 726 __u32 size, int flags, 727 char **ret_jsb); 728extern errcode_t ext2fs_add_journal_device(ext2_filsys fs, 729 ext2_filsys journal_dev); 730extern errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t size, 731 int flags); 732 733/* openfs.c */ 734extern errcode_t ext2fs_open(const char *name, int flags, int superblock, 735 int block_size, io_manager manager, 736 ext2_filsys *ret_fs); 737 738/* get_pathname.c */ 739extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino, 740 char **name); 741 742/* link.c */ 743errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name, 744 ext2_ino_t ino, int flags); 745errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir, const char *name, 746 ext2_ino_t ino, int flags); 747 748/* read_bb.c */ 749extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs, 750 ext2_badblocks_list *bb_list); 751 752/* read_bb_file.c */ 753extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f, 754 ext2_badblocks_list *bb_list, 755 void *private, 756 void (*invalid)(ext2_filsys fs, 757 blk_t blk, 758 char *badstr, 759 void *private)); 760extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f, 761 ext2_badblocks_list *bb_list, 762 void (*invalid)(ext2_filsys fs, 763 blk_t blk)); 764 765/* rs_bitmap.c */ 766extern errcode_t ext2fs_resize_generic_bitmap(__u32 new_end, 767 __u32 new_real_end, 768 ext2fs_generic_bitmap bmap); 769extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end, 770 ext2fs_inode_bitmap bmap); 771extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end, 772 ext2fs_block_bitmap bmap); 773extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src, 774 ext2fs_generic_bitmap *dest); 775 776/* swapfs.c */ 777extern void ext2fs_swap_super(struct ext2_super_block * super); 778extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp); 779extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t, 780 struct ext2_inode *f, int hostorder); 781 782/* valid_blk.c */ 783extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode); 784 785/* version.c */ 786extern int ext2fs_parse_version_string(const char *ver_string); 787extern int ext2fs_get_library_version(const char **ver_string, 788 const char **date_string); 789 790/* write_bb_file.c */ 791extern errcode_t ext2fs_write_bb_FILE(ext2_badblocks_list bb_list, 792 unsigned int flags, 793 FILE *f); 794 795 796/* inline functions */ 797extern errcode_t ext2fs_get_mem(unsigned long size, void **ptr); 798extern errcode_t ext2fs_free_mem(void **ptr); 799extern errcode_t ext2fs_resize_mem(unsigned long old_size, 800 unsigned long size, void **ptr); 801extern void ext2fs_mark_super_dirty(ext2_filsys fs); 802extern void ext2fs_mark_changed(ext2_filsys fs); 803extern int ext2fs_test_changed(ext2_filsys fs); 804extern void ext2fs_mark_valid(ext2_filsys fs); 805extern void ext2fs_unmark_valid(ext2_filsys fs); 806extern int ext2fs_test_valid(ext2_filsys fs); 807extern void ext2fs_mark_ib_dirty(ext2_filsys fs); 808extern void ext2fs_mark_bb_dirty(ext2_filsys fs); 809extern int ext2fs_test_ib_dirty(ext2_filsys fs); 810extern int ext2fs_test_bb_dirty(ext2_filsys fs); 811extern int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk); 812extern int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino); 813 814/* 815 * The actual inlined functions definitions themselves... 816 * 817 * If NO_INLINE_FUNCS is defined, then we won't try to do inline 818 * functions at all! 819 */ 820#if (defined(INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS)) 821#ifdef INCLUDE_INLINE_FUNCS 822#define _INLINE_ extern 823#else 824#ifdef __GNUC__ 825#define _INLINE_ extern __inline__ 826#else /* For Watcom C */ 827#define _INLINE_ extern inline 828#endif 829#endif 830 831#ifndef EXT2_CUSTOM_MEMORY_ROUTINES 832/* 833 * Allocate memory 834 */ 835_INLINE_ errcode_t ext2fs_get_mem(unsigned long size, void **ptr) 836{ 837 *ptr = malloc(size); 838 if (!*ptr) 839 return EXT2_ET_NO_MEMORY; 840 return 0; 841} 842 843/* 844 * Free memory 845 */ 846_INLINE_ errcode_t ext2fs_free_mem(void **ptr) 847{ 848 free(*ptr); 849 *ptr = 0; 850 return 0; 851} 852 853/* 854 * Resize memory 855 */ 856_INLINE_ errcode_t ext2fs_resize_mem(unsigned long old_size, 857 unsigned long size, void **ptr) 858{ 859 void *p; 860 861 p = realloc(*ptr, size); 862 if (!p) 863 return EXT2_ET_NO_MEMORY; 864 *ptr = p; 865 return 0; 866} 867#endif /* Custom memory routines */ 868 869/* 870 * Mark a filesystem superblock as dirty 871 */ 872_INLINE_ void ext2fs_mark_super_dirty(ext2_filsys fs) 873{ 874 fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_CHANGED; 875} 876 877/* 878 * Mark a filesystem as changed 879 */ 880_INLINE_ void ext2fs_mark_changed(ext2_filsys fs) 881{ 882 fs->flags |= EXT2_FLAG_CHANGED; 883} 884 885/* 886 * Check to see if a filesystem has changed 887 */ 888_INLINE_ int ext2fs_test_changed(ext2_filsys fs) 889{ 890 return (fs->flags & EXT2_FLAG_CHANGED); 891} 892 893/* 894 * Mark a filesystem as valid 895 */ 896_INLINE_ void ext2fs_mark_valid(ext2_filsys fs) 897{ 898 fs->flags |= EXT2_FLAG_VALID; 899} 900 901/* 902 * Mark a filesystem as NOT valid 903 */ 904_INLINE_ void ext2fs_unmark_valid(ext2_filsys fs) 905{ 906 fs->flags &= ~EXT2_FLAG_VALID; 907} 908 909/* 910 * Check to see if a filesystem is valid 911 */ 912_INLINE_ int ext2fs_test_valid(ext2_filsys fs) 913{ 914 return (fs->flags & EXT2_FLAG_VALID); 915} 916 917/* 918 * Mark the inode bitmap as dirty 919 */ 920_INLINE_ void ext2fs_mark_ib_dirty(ext2_filsys fs) 921{ 922 fs->flags |= EXT2_FLAG_IB_DIRTY | EXT2_FLAG_CHANGED; 923} 924 925/* 926 * Mark the block bitmap as dirty 927 */ 928_INLINE_ void ext2fs_mark_bb_dirty(ext2_filsys fs) 929{ 930 fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_CHANGED; 931} 932 933/* 934 * Check to see if a filesystem's inode bitmap is dirty 935 */ 936_INLINE_ int ext2fs_test_ib_dirty(ext2_filsys fs) 937{ 938 return (fs->flags & EXT2_FLAG_IB_DIRTY); 939} 940 941/* 942 * Check to see if a filesystem's block bitmap is dirty 943 */ 944_INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs) 945{ 946 return (fs->flags & EXT2_FLAG_BB_DIRTY); 947} 948 949/* 950 * Return the group # of a block 951 */ 952_INLINE_ int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk) 953{ 954 return (blk - fs->super->s_first_data_block) / 955 fs->super->s_blocks_per_group; 956} 957 958/* 959 * Return the group # of an inode number 960 */ 961_INLINE_ int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino) 962{ 963 return (ino - 1) / fs->super->s_inodes_per_group; 964} 965#undef _INLINE_ 966#endif 967 968#ifdef __cplusplus 969} 970#endif 971 972#endif /* _EXT2FS_EXT2FS_H */ 973