ext2fs.h revision e47fd8414d3bd4632792cc52310e53edcfeea27c
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 __GNUC__ 16#define EXT2FS_ATTR(x) __attribute__(x) 17#else 18#define EXT2FS_ATTR(x) 19#endif 20 21#ifdef __cplusplus 22extern "C" { 23#endif 24 25/* 26 * Non-GNU C compilers won't necessarily understand inline 27 */ 28#if (!defined(__GNUC__) && !defined(__WATCOMC__)) 29#define NO_INLINE_FUNCS 30#endif 31 32/* 33 * Build in support for byte-swapping filesystems if we the feature 34 * has been configured or if we're being built on a CPU architecture 35 * with a non-native byte order. 36 */ 37#if defined(ENABLE_SWAPFS) || defined(WORDS_BIGENDIAN) 38#define EXT2FS_ENABLE_SWAPFS 39#endif 40 41/* 42 * Where the master copy of the superblock is located, and how big 43 * superblocks are supposed to be. We define SUPERBLOCK_SIZE because 44 * the size of the superblock structure is not necessarily trustworthy 45 * (some versions have the padding set up so that the superblock is 46 * 1032 bytes long). 47 */ 48#define SUPERBLOCK_OFFSET 1024 49#define SUPERBLOCK_SIZE 1024 50 51/* 52 * The last ext2fs revision level that this version of the library is 53 * able to support. 54 */ 55#define EXT2_LIB_CURRENT_REV EXT2_DYNAMIC_REV 56 57#ifdef HAVE_SYS_TYPES_H 58#include <sys/types.h> 59#endif 60 61#include <stdio.h> 62#include <stdlib.h> 63 64#if EXT2_FLAT_INCLUDES 65#include "e2_types.h" 66#include "ext2_fs.h" 67#else 68#include <ext2fs/ext2_types.h> 69#include <ext2fs/ext2_fs.h> 70#endif /* EXT2_FLAT_INCLUDES */ 71 72typedef __u32 ext2_ino_t; 73typedef __u32 blk_t; 74typedef __u32 dgrp_t; 75typedef __u32 ext2_off_t; 76typedef __s64 e2_blkcnt_t; 77typedef __u32 ext2_dirhash_t; 78 79#if EXT2_FLAT_INCLUDES 80#include "com_err.h" 81#include "ext2_io.h" 82#include "ext2_err.h" 83#else 84#include <et/com_err.h> 85#include <ext2fs/ext2_io.h> 86#include <ext2fs/ext2_err.h> 87#endif 88 89/* 90 * Portability help for Microsoft Visual C++ 91 */ 92#ifdef _MSC_VER 93#define EXT2_QSORT_TYPE int __cdecl 94#else 95#define EXT2_QSORT_TYPE int 96#endif 97 98typedef struct struct_ext2_filsys *ext2_filsys; 99 100struct ext2fs_struct_generic_bitmap { 101 errcode_t magic; 102 ext2_filsys fs; 103 __u32 start, end; 104 __u32 real_end; 105 char * description; 106 char * bitmap; 107 errcode_t base_error_code; 108 __u32 reserved[7]; 109}; 110 111#define EXT2FS_MARK_ERROR 0 112#define EXT2FS_UNMARK_ERROR 1 113#define EXT2FS_TEST_ERROR 2 114 115typedef struct ext2fs_struct_generic_bitmap *ext2fs_generic_bitmap; 116typedef struct ext2fs_struct_generic_bitmap *ext2fs_inode_bitmap; 117typedef struct ext2fs_struct_generic_bitmap *ext2fs_block_bitmap; 118 119#ifdef EXT2_DYNAMIC_REV 120#define EXT2_FIRST_INODE(s) EXT2_FIRST_INO(s) 121#else 122#define EXT2_FIRST_INODE(s) EXT2_FIRST_INO 123#define EXT2_INODE_SIZE(s) sizeof(struct ext2_inode) 124#endif 125 126/* 127 * badblocks list definitions 128 */ 129 130typedef struct ext2_struct_u32_list *ext2_badblocks_list; 131typedef struct ext2_struct_u32_iterate *ext2_badblocks_iterate; 132 133typedef struct ext2_struct_u32_list *ext2_u32_list; 134typedef struct ext2_struct_u32_iterate *ext2_u32_iterate; 135 136/* old */ 137typedef struct ext2_struct_u32_list *badblocks_list; 138typedef struct ext2_struct_u32_iterate *badblocks_iterate; 139 140#define BADBLOCKS_FLAG_DIRTY 1 141 142/* 143 * ext2_dblist structure and abstractions (see dblist.c) 144 */ 145struct ext2_db_entry { 146 ext2_ino_t ino; 147 blk_t blk; 148 int blockcnt; 149}; 150 151typedef struct ext2_struct_dblist *ext2_dblist; 152 153#define DBLIST_ABORT 1 154 155/* 156 * ext2_fileio definitions 157 */ 158 159#define EXT2_FILE_WRITE 0x0001 160#define EXT2_FILE_CREATE 0x0002 161 162#define EXT2_FILE_MASK 0x00FF 163 164#define EXT2_FILE_BUF_DIRTY 0x4000 165#define EXT2_FILE_BUF_VALID 0x2000 166 167typedef struct ext2_file *ext2_file_t; 168 169#define EXT2_SEEK_SET 0 170#define EXT2_SEEK_CUR 1 171#define EXT2_SEEK_END 2 172 173/* 174 * Flags for the ext2_filsys structure and for ext2fs_open() 175 */ 176#define EXT2_FLAG_RW 0x01 177#define EXT2_FLAG_CHANGED 0x02 178#define EXT2_FLAG_DIRTY 0x04 179#define EXT2_FLAG_VALID 0x08 180#define EXT2_FLAG_IB_DIRTY 0x10 181#define EXT2_FLAG_BB_DIRTY 0x20 182#define EXT2_FLAG_SWAP_BYTES 0x40 183#define EXT2_FLAG_SWAP_BYTES_READ 0x80 184#define EXT2_FLAG_SWAP_BYTES_WRITE 0x100 185#define EXT2_FLAG_MASTER_SB_ONLY 0x200 186#define EXT2_FLAG_FORCE 0x400 187#define EXT2_FLAG_SUPER_ONLY 0x800 188#define EXT2_FLAG_JOURNAL_DEV_OK 0x1000 189#define EXT2_FLAG_IMAGE_FILE 0x2000 190 191/* 192 * Special flag in the ext2 inode i_flag field that means that this is 193 * a new inode. (So that ext2_write_inode() can clear extra fields.) 194 */ 195#define EXT2_NEW_INODE_FL 0x80000000 196 197/* 198 * Flags for mkjournal 199 * 200 * EXT2_MKJOURNAL_V1_SUPER Make a (deprecated) V1 journal superblock 201 */ 202#define EXT2_MKJOURNAL_V1_SUPER 0x0000001 203 204struct struct_ext2_filsys { 205 errcode_t magic; 206 io_channel io; 207 int flags; 208 char * device_name; 209 struct ext2_super_block * super; 210 unsigned int blocksize; 211 int fragsize; 212 dgrp_t group_desc_count; 213 unsigned long desc_blocks; 214 struct ext2_group_desc * group_desc; 215 int inode_blocks_per_group; 216 ext2fs_inode_bitmap inode_map; 217 ext2fs_block_bitmap block_map; 218 errcode_t (*get_blocks)(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); 219 errcode_t (*check_directory)(ext2_filsys fs, ext2_ino_t ino); 220 errcode_t (*write_bitmaps)(ext2_filsys fs); 221 errcode_t (*read_inode)(ext2_filsys fs, ext2_ino_t ino, 222 struct ext2_inode *inode); 223 errcode_t (*write_inode)(ext2_filsys fs, ext2_ino_t ino, 224 struct ext2_inode *inode); 225 ext2_badblocks_list badblocks; 226 ext2_dblist dblist; 227 __u32 stride; /* for mke2fs */ 228 struct ext2_super_block * orig_super; 229 struct ext2_image_hdr * image_header; 230 __u32 umask; 231 /* 232 * Reserved for future expansion 233 */ 234 __u32 reserved[8]; 235 236 /* 237 * Reserved for the use of the calling application. 238 */ 239 void * priv_data; 240 241 /* 242 * Inode cache 243 */ 244 struct ext2_inode_cache *icache; 245}; 246 247#if EXT2_FLAT_INCLUDES 248#include "e2_bitops.h" 249#else 250#include <ext2fs/bitops.h> 251#endif 252 253/* 254 * Return flags for the block iterator functions 255 */ 256#define BLOCK_CHANGED 1 257#define BLOCK_ABORT 2 258#define BLOCK_ERROR 4 259 260/* 261 * Block interate flags 262 * 263 * BLOCK_FLAG_APPEND, or BLOCK_FLAG_HOLE, indicates that the interator 264 * function should be called on blocks where the block number is zero. 265 * This is used by ext2fs_expand_dir() to be able to add a new block 266 * to an inode. It can also be used for programs that want to be able 267 * to deal with files that contain "holes". 268 * 269 * BLOCK_FLAG_TRAVERSE indicates that the iterator function for the 270 * indirect, doubly indirect, etc. blocks should be called after all 271 * of the blocks containined in the indirect blocks are processed. 272 * This is useful if you are going to be deallocating blocks from an 273 * inode. 274 * 275 * BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be 276 * called for data blocks only. 277 * 278 * BLOCK_FLAG_NO_LARGE is for internal use only. It informs 279 * ext2fs_block_iterate2 that large files won't be accepted. 280 */ 281#define BLOCK_FLAG_APPEND 1 282#define BLOCK_FLAG_HOLE 1 283#define BLOCK_FLAG_DEPTH_TRAVERSE 2 284#define BLOCK_FLAG_DATA_ONLY 4 285 286#define BLOCK_FLAG_NO_LARGE 0x1000 287 288/* 289 * Magic "block count" return values for the block iterator function. 290 */ 291#define BLOCK_COUNT_IND (-1) 292#define BLOCK_COUNT_DIND (-2) 293#define BLOCK_COUNT_TIND (-3) 294#define BLOCK_COUNT_TRANSLATOR (-4) 295 296#if 0 297/* 298 * Flags for ext2fs_move_blocks 299 */ 300#define EXT2_BMOVE_GET_DBLIST 0x0001 301#define EXT2_BMOVE_DEBUG 0x0002 302#endif 303 304/* 305 * Flags for directory block reading and writing functions 306 */ 307#define EXT2_DIRBLOCK_V2_STRUCT 0x0001 308 309/* 310 * Return flags for the directory iterator functions 311 */ 312#define DIRENT_CHANGED 1 313#define DIRENT_ABORT 2 314#define DIRENT_ERROR 3 315 316/* 317 * Directory iterator flags 318 */ 319 320#define DIRENT_FLAG_INCLUDE_EMPTY 1 321#define DIRENT_FLAG_INCLUDE_REMOVED 2 322 323#define DIRENT_DOT_FILE 1 324#define DIRENT_DOT_DOT_FILE 2 325#define DIRENT_OTHER_FILE 3 326#define DIRENT_DELETED_FILE 4 327 328/* 329 * Inode scan definitions 330 */ 331typedef struct ext2_struct_inode_scan *ext2_inode_scan; 332 333/* 334 * ext2fs_scan flags 335 */ 336#define EXT2_SF_CHK_BADBLOCKS 0x0001 337#define EXT2_SF_BAD_INODE_BLK 0x0002 338#define EXT2_SF_BAD_EXTRA_BYTES 0x0004 339#define EXT2_SF_SKIP_MISSING_ITABLE 0x0008 340 341/* 342 * ext2fs_check_if_mounted flags 343 */ 344#define EXT2_MF_MOUNTED 1 345#define EXT2_MF_ISROOT 2 346#define EXT2_MF_READONLY 4 347#define EXT2_MF_SWAP 8 348 349/* 350 * Ext2/linux mode flags. We define them here so that we don't need 351 * to depend on the OS's sys/stat.h, since we may be compiling on a 352 * non-Linux system. 353 */ 354#define LINUX_S_IFMT 00170000 355#define LINUX_S_IFSOCK 0140000 356#define LINUX_S_IFLNK 0120000 357#define LINUX_S_IFREG 0100000 358#define LINUX_S_IFBLK 0060000 359#define LINUX_S_IFDIR 0040000 360#define LINUX_S_IFCHR 0020000 361#define LINUX_S_IFIFO 0010000 362#define LINUX_S_ISUID 0004000 363#define LINUX_S_ISGID 0002000 364#define LINUX_S_ISVTX 0001000 365 366#define LINUX_S_IRWXU 00700 367#define LINUX_S_IRUSR 00400 368#define LINUX_S_IWUSR 00200 369#define LINUX_S_IXUSR 00100 370 371#define LINUX_S_IRWXG 00070 372#define LINUX_S_IRGRP 00040 373#define LINUX_S_IWGRP 00020 374#define LINUX_S_IXGRP 00010 375 376#define LINUX_S_IRWXO 00007 377#define LINUX_S_IROTH 00004 378#define LINUX_S_IWOTH 00002 379#define LINUX_S_IXOTH 00001 380 381#define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK) 382#define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG) 383#define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR) 384#define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR) 385#define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK) 386#define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO) 387#define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK) 388 389/* 390 * ext2 size of an inode 391 */ 392#define EXT2_I_SIZE(i) ((i)->i_size | ((__u64) (i)->i_size_high << 32)) 393 394/* 395 * ext2_icount_t abstraction 396 */ 397#define EXT2_ICOUNT_OPT_INCREMENT 0x01 398 399typedef struct ext2_icount *ext2_icount_t; 400 401/* 402 * Flags for ext2fs_bmap 403 */ 404#define BMAP_ALLOC 1 405 406/* 407 * Flags for imager.c functions 408 */ 409#define IMAGER_FLAG_INODEMAP 1 410#define IMAGER_FLAG_SPARSEWRITE 2 411 412/* 413 * For checking structure magic numbers... 414 */ 415 416#define EXT2_CHECK_MAGIC(struct, code) \ 417 if ((struct)->magic != (code)) return (code) 418 419 420/* 421 * For ext2 compression support 422 */ 423#define EXT2FS_COMPRESSED_BLKADDR ((blk_t) 0xffffffff) 424#define HOLE_BLKADDR(_b) ((_b) == 0 || (_b) == EXT2FS_COMPRESSED_BLKADDR) 425 426/* 427 * Features supported by this version of the library 428 */ 429#define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\ 430 EXT2_FEATURE_COMPAT_IMAGIC_INODES|\ 431 EXT3_FEATURE_COMPAT_HAS_JOURNAL|\ 432 EXT2_FEATURE_COMPAT_DIR_INDEX|\ 433 EXT2_FEATURE_COMPAT_EXT_ATTR) 434 435/* This #ifdef is temporary until compression is fully supported */ 436#ifdef ENABLE_COMPRESSION 437#ifndef I_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL 438/* If the below warning bugs you, then have 439 `CPPFLAGS=-DI_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL' in your 440 environment at configure time. */ 441 #warning "Compression support is experimental" 442#endif 443#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 444 EXT2_FEATURE_INCOMPAT_COMPRESSION|\ 445 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 446 EXT2_FEATURE_INCOMPAT_META_BG|\ 447 EXT3_FEATURE_INCOMPAT_RECOVER) 448#else 449#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 450 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 451 EXT2_FEATURE_INCOMPAT_META_BG|\ 452 EXT3_FEATURE_INCOMPAT_RECOVER) 453#endif 454#define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\ 455 EXT2_FEATURE_RO_COMPAT_LARGE_FILE) 456/* 457 * function prototypes 458 */ 459 460/* alloc.c */ 461extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode, 462 ext2fs_inode_bitmap map, ext2_ino_t *ret); 463extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal, 464 ext2fs_block_bitmap map, blk_t *ret); 465extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start, 466 blk_t finish, int num, 467 ext2fs_block_bitmap map, 468 blk_t *ret); 469extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal, 470 char *block_buf, blk_t *ret); 471 472/* alloc_sb.c */ 473extern int ext2fs_reserve_super_and_bgd(ext2_filsys fs, 474 dgrp_t group, 475 ext2fs_block_bitmap bmap); 476 477/* alloc_stats.c */ 478void ext2fs_inode_alloc_stats(ext2_filsys fs, ext2_ino_t ino, int inuse); 479void ext2fs_inode_alloc_stats2(ext2_filsys fs, ext2_ino_t ino, 480 int inuse, int isdir); 481void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse); 482 483/* alloc_tables.c */ 484extern errcode_t ext2fs_allocate_tables(ext2_filsys fs); 485extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group, 486 ext2fs_block_bitmap bmap); 487 488/* badblocks.c */ 489extern errcode_t ext2fs_u32_list_create(ext2_u32_list *ret, int size); 490extern errcode_t ext2fs_u32_list_add(ext2_u32_list bb, __u32 blk); 491extern int ext2fs_u32_list_find(ext2_u32_list bb, __u32 blk); 492extern int ext2fs_u32_list_test(ext2_u32_list bb, blk_t blk); 493extern errcode_t ext2fs_u32_list_iterate_begin(ext2_u32_list bb, 494 ext2_u32_iterate *ret); 495extern int ext2fs_u32_list_iterate(ext2_u32_iterate iter, blk_t *blk); 496extern void ext2fs_u32_list_iterate_end(ext2_u32_iterate iter); 497extern errcode_t ext2fs_u32_copy(ext2_u32_list src, ext2_u32_list *dest); 498extern int ext2fs_u32_list_equal(ext2_u32_list bb1, ext2_u32_list bb2); 499 500extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret, 501 int size); 502extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb, 503 blk_t blk); 504extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb, 505 blk_t blk); 506extern int ext2fs_u32_list_del(ext2_u32_list bb, __u32 blk); 507extern void ext2fs_badblocks_list_del(ext2_u32_list bb, __u32 blk); 508extern errcode_t 509 ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb, 510 ext2_badblocks_iterate *ret); 511extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter, 512 blk_t *blk); 513extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter); 514extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src, 515 ext2_badblocks_list *dest); 516extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1, 517 ext2_badblocks_list bb2); 518extern int ext2fs_u32_list_count(ext2_u32_list bb); 519 520/* bb_compat */ 521extern errcode_t badblocks_list_create(badblocks_list *ret, int size); 522extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk); 523extern int badblocks_list_test(badblocks_list bb, blk_t blk); 524extern errcode_t badblocks_list_iterate_begin(badblocks_list bb, 525 badblocks_iterate *ret); 526extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk); 527extern void badblocks_list_iterate_end(badblocks_iterate iter); 528extern void badblocks_list_free(badblocks_list bb); 529 530/* bb_inode.c */ 531extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs, 532 ext2_badblocks_list bb_list); 533 534/* bitmaps.c */ 535extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs); 536extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs); 537extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs); 538extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs); 539extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start, 540 __u32 end, 541 __u32 real_end, 542 const char *descr, 543 ext2fs_generic_bitmap *ret); 544extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs, 545 const char *descr, 546 ext2fs_block_bitmap *ret); 547extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs, 548 const char *descr, 549 ext2fs_inode_bitmap *ret); 550extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap, 551 ext2_ino_t end, ext2_ino_t *oend); 552extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap, 553 blk_t end, blk_t *oend); 554extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap); 555extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap); 556extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs); 557extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs); 558 559/* block.c */ 560extern errcode_t ext2fs_block_iterate(ext2_filsys fs, 561 ext2_ino_t ino, 562 int flags, 563 char *block_buf, 564 int (*func)(ext2_filsys fs, 565 blk_t *blocknr, 566 int blockcnt, 567 void *priv_data), 568 void *priv_data); 569errcode_t ext2fs_block_iterate2(ext2_filsys fs, 570 ext2_ino_t ino, 571 int flags, 572 char *block_buf, 573 int (*func)(ext2_filsys fs, 574 blk_t *blocknr, 575 e2_blkcnt_t blockcnt, 576 blk_t ref_blk, 577 int ref_offset, 578 void *priv_data), 579 void *priv_data); 580 581/* bmap.c */ 582extern errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino, 583 struct ext2_inode *inode, 584 char *block_buf, int bmap_flags, 585 blk_t block, blk_t *phys_blk); 586 587 588#if 0 589/* bmove.c */ 590extern errcode_t ext2fs_move_blocks(ext2_filsys fs, 591 ext2fs_block_bitmap reserve, 592 ext2fs_block_bitmap alloc_map, 593 int flags); 594#endif 595 596/* check_desc.c */ 597extern errcode_t ext2fs_check_desc(ext2_filsys fs); 598 599/* closefs.c */ 600extern errcode_t ext2fs_close(ext2_filsys fs); 601extern errcode_t ext2fs_flush(ext2_filsys fs); 602extern int ext2fs_bg_has_super(ext2_filsys fs, int group_block); 603extern int ext2fs_super_and_bgd_loc(ext2_filsys fs, 604 dgrp_t group, 605 blk_t *ret_super_blk, 606 blk_t *ret_old_desc_blk, 607 blk_t *ret_new_desc_blk, 608 int *ret_meta_bg); 609extern void ext2fs_update_dynamic_rev(ext2_filsys fs); 610 611/* cmp_bitmaps.c */ 612extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1, 613 ext2fs_block_bitmap bm2); 614extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1, 615 ext2fs_inode_bitmap bm2); 616 617/* dblist.c */ 618 619extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs); 620extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist); 621extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ext2_ino_t ino, 622 blk_t blk, int blockcnt); 623extern void ext2fs_dblist_sort(ext2_dblist dblist, 624 EXT2_QSORT_TYPE (*sortfunc)(const void *, 625 const void *)); 626extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist, 627 int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info, 628 void *priv_data), 629 void *priv_data); 630extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ext2_ino_t ino, 631 blk_t blk, int blockcnt); 632extern errcode_t ext2fs_copy_dblist(ext2_dblist src, 633 ext2_dblist *dest); 634extern int ext2fs_dblist_count(ext2_dblist dblist); 635 636/* dblist_dir.c */ 637extern errcode_t 638 ext2fs_dblist_dir_iterate(ext2_dblist dblist, 639 int flags, 640 char *block_buf, 641 int (*func)(ext2_ino_t dir, 642 int entry, 643 struct ext2_dir_entry *dirent, 644 int offset, 645 int blocksize, 646 char *buf, 647 void *priv_data), 648 void *priv_data); 649 650/* dirblock.c */ 651extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block, 652 void *buf); 653extern errcode_t ext2fs_read_dir_block2(ext2_filsys fs, blk_t block, 654 void *buf, int flags); 655extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block, 656 void *buf); 657extern errcode_t ext2fs_write_dir_block2(ext2_filsys fs, blk_t block, 658 void *buf, int flags); 659 660/* dirhash.c */ 661extern errcode_t ext2fs_dirhash(int version, const char *name, int len, 662 const __u32 *seed, 663 ext2_dirhash_t *ret_hash, 664 ext2_dirhash_t *ret_minor_hash); 665 666 667/* dir_iterate.c */ 668extern errcode_t ext2fs_dir_iterate(ext2_filsys fs, 669 ext2_ino_t dir, 670 int flags, 671 char *block_buf, 672 int (*func)(struct ext2_dir_entry *dirent, 673 int offset, 674 int blocksize, 675 char *buf, 676 void *priv_data), 677 void *priv_data); 678extern errcode_t ext2fs_dir_iterate2(ext2_filsys fs, 679 ext2_ino_t dir, 680 int flags, 681 char *block_buf, 682 int (*func)(ext2_ino_t dir, 683 int entry, 684 struct ext2_dir_entry *dirent, 685 int offset, 686 int blocksize, 687 char *buf, 688 void *priv_data), 689 void *priv_data); 690 691/* dupfs.c */ 692extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest); 693 694/* expanddir.c */ 695extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir); 696 697/* ext_attr.c */ 698void ext2fs_swap_ext_attr(ext2_filsys fs, char *to, char *from); 699extern errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf); 700extern errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block, 701 void *buf); 702extern errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk, 703 char *block_buf, 704 int adjust, __u32 *newcount); 705 706/* fileio.c */ 707extern errcode_t ext2fs_file_open2(ext2_filsys fs, ext2_ino_t ino, 708 struct ext2_inode *inode, 709 int flags, ext2_file_t *ret); 710extern errcode_t ext2fs_file_open(ext2_filsys fs, ext2_ino_t ino, 711 int flags, ext2_file_t *ret); 712extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file); 713extern errcode_t ext2fs_file_close(ext2_file_t file); 714extern errcode_t ext2fs_file_flush(ext2_file_t file); 715extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf, 716 unsigned int wanted, unsigned int *got); 717extern errcode_t ext2fs_file_write(ext2_file_t file, const void *buf, 718 unsigned int nbytes, unsigned int *written); 719extern errcode_t ext2fs_file_llseek(ext2_file_t file, __u64 offset, 720 int whence, __u64 *ret_pos); 721extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset, 722 int whence, ext2_off_t *ret_pos); 723errcode_t ext2fs_file_get_lsize(ext2_file_t file, __u64 *ret_size); 724extern ext2_off_t ext2fs_file_get_size(ext2_file_t file); 725extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size); 726 727/* finddev.c */ 728extern char *ext2fs_find_block_device(dev_t device); 729 730/* flushb.c */ 731extern errcode_t ext2fs_sync_device(int fd, int flushb); 732 733/* freefs.c */ 734extern void ext2fs_free(ext2_filsys fs); 735extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap); 736extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap); 737extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap); 738extern void ext2fs_free_dblist(ext2_dblist dblist); 739extern void ext2fs_badblocks_list_free(ext2_badblocks_list bb); 740extern void ext2fs_u32_list_free(ext2_u32_list bb); 741 742/* getsize.c */ 743extern errcode_t ext2fs_get_device_size(const char *file, int blocksize, 744 blk_t *retblocks); 745 746/* getsectsize.c */ 747errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize); 748 749/* imager.c */ 750extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags); 751extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags); 752extern errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd, int flags); 753extern errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd, int flags); 754extern errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags); 755extern errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags); 756 757/* initialize.c */ 758extern errcode_t ext2fs_initialize(const char *name, int flags, 759 struct ext2_super_block *param, 760 io_manager manager, ext2_filsys *ret_fs); 761 762/* icount.c */ 763extern void ext2fs_free_icount(ext2_icount_t icount); 764extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags, 765 unsigned int size, 766 ext2_icount_t hint, ext2_icount_t *ret); 767extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags, 768 unsigned int size, 769 ext2_icount_t *ret); 770extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ext2_ino_t ino, 771 __u16 *ret); 772extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ext2_ino_t ino, 773 __u16 *ret); 774extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ext2_ino_t ino, 775 __u16 *ret); 776extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ext2_ino_t ino, 777 __u16 count); 778extern ext2_ino_t ext2fs_get_icount_size(ext2_icount_t icount); 779errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *); 780 781/* inode.c */ 782extern errcode_t ext2fs_flush_icache(ext2_filsys fs); 783extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks, 784 ext2_inode_scan *ret_scan); 785extern void ext2fs_close_inode_scan(ext2_inode_scan scan); 786extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino, 787 struct ext2_inode *inode); 788extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan, 789 int group); 790extern void ext2fs_set_inode_callback 791 (ext2_inode_scan scan, 792 errcode_t (*done_group)(ext2_filsys fs, 793 ext2_inode_scan scan, 794 dgrp_t group, 795 void * priv_data), 796 void *done_group_data); 797extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags, 798 int clear_flags); 799extern errcode_t ext2fs_read_inode (ext2_filsys fs, ext2_ino_t ino, 800 struct ext2_inode * inode); 801extern errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino, 802 struct ext2_inode * inode); 803extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); 804extern errcode_t ext2fs_check_directory(ext2_filsys fs, ext2_ino_t ino); 805 806/* inode_io.c */ 807extern io_manager inode_io_manager; 808extern errcode_t ext2fs_inode_io_intern(ext2_filsys fs, ext2_ino_t ino, 809 char **name); 810extern errcode_t ext2fs_inode_io_intern2(ext2_filsys fs, ext2_ino_t ino, 811 struct ext2_inode *inode, 812 char **name); 813 814/* ismounted.c */ 815extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags); 816extern errcode_t ext2fs_check_mount_point(const char *device, int *mount_flags, 817 char *mtpt, int mtlen); 818 819/* namei.c */ 820extern errcode_t ext2fs_lookup(ext2_filsys fs, ext2_ino_t dir, const char *name, 821 int namelen, char *buf, ext2_ino_t *inode); 822extern errcode_t ext2fs_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 823 const char *name, ext2_ino_t *inode); 824errcode_t ext2fs_namei_follow(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 825 const char *name, ext2_ino_t *inode); 826extern errcode_t ext2fs_follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 827 ext2_ino_t inode, ext2_ino_t *res_inode); 828 829/* native.c */ 830int ext2fs_native_flag(void); 831 832/* newdir.c */ 833extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino, 834 ext2_ino_t parent_ino, char **block); 835 836/* mkdir.c */ 837extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum, 838 const char *name); 839 840/* mkjournal.c */ 841extern errcode_t ext2fs_create_journal_superblock(ext2_filsys fs, 842 __u32 size, int flags, 843 char **ret_jsb); 844extern errcode_t ext2fs_add_journal_device(ext2_filsys fs, 845 ext2_filsys journal_dev); 846extern errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t size, 847 int flags); 848 849/* openfs.c */ 850extern errcode_t ext2fs_open(const char *name, int flags, int superblock, 851 unsigned int block_size, io_manager manager, 852 ext2_filsys *ret_fs); 853extern blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block, 854 dgrp_t i); 855 856/* get_pathname.c */ 857extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino, 858 char **name); 859 860/* link.c */ 861errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name, 862 ext2_ino_t ino, int flags); 863errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir, const char *name, 864 ext2_ino_t ino, int flags); 865 866/* read_bb.c */ 867extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs, 868 ext2_badblocks_list *bb_list); 869 870/* read_bb_file.c */ 871extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f, 872 ext2_badblocks_list *bb_list, 873 void *priv_data, 874 void (*invalid)(ext2_filsys fs, 875 blk_t blk, 876 char *badstr, 877 void *priv_data)); 878extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f, 879 ext2_badblocks_list *bb_list, 880 void (*invalid)(ext2_filsys fs, 881 blk_t blk)); 882 883/* rs_bitmap.c */ 884extern errcode_t ext2fs_resize_generic_bitmap(__u32 new_end, 885 __u32 new_real_end, 886 ext2fs_generic_bitmap bmap); 887extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end, 888 ext2fs_inode_bitmap bmap); 889extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end, 890 ext2fs_block_bitmap bmap); 891extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src, 892 ext2fs_generic_bitmap *dest); 893 894/* swapfs.c */ 895extern void ext2fs_swap_super(struct ext2_super_block * super); 896extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp); 897extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t, 898 struct ext2_inode *f, int hostorder); 899 900/* valid_blk.c */ 901extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode); 902 903/* version.c */ 904extern int ext2fs_parse_version_string(const char *ver_string); 905extern int ext2fs_get_library_version(const char **ver_string, 906 const char **date_string); 907 908/* write_bb_file.c */ 909extern errcode_t ext2fs_write_bb_FILE(ext2_badblocks_list bb_list, 910 unsigned int flags, 911 FILE *f); 912 913 914/* inline functions */ 915extern errcode_t ext2fs_get_mem(unsigned long size, void *ptr); 916extern errcode_t ext2fs_free_mem(void *ptr); 917extern errcode_t ext2fs_resize_mem(unsigned long old_size, 918 unsigned long size, void *ptr); 919extern void ext2fs_mark_super_dirty(ext2_filsys fs); 920extern void ext2fs_mark_changed(ext2_filsys fs); 921extern int ext2fs_test_changed(ext2_filsys fs); 922extern void ext2fs_mark_valid(ext2_filsys fs); 923extern void ext2fs_unmark_valid(ext2_filsys fs); 924extern int ext2fs_test_valid(ext2_filsys fs); 925extern void ext2fs_mark_ib_dirty(ext2_filsys fs); 926extern void ext2fs_mark_bb_dirty(ext2_filsys fs); 927extern int ext2fs_test_ib_dirty(ext2_filsys fs); 928extern int ext2fs_test_bb_dirty(ext2_filsys fs); 929extern int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk); 930extern int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino); 931extern blk_t ext2fs_inode_data_blocks(ext2_filsys fs, 932 struct ext2_inode *inode); 933 934/* 935 * The actual inlined functions definitions themselves... 936 * 937 * If NO_INLINE_FUNCS is defined, then we won't try to do inline 938 * functions at all! 939 */ 940#if (defined(INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS)) 941#ifdef INCLUDE_INLINE_FUNCS 942#define _INLINE_ extern 943#else 944#ifdef __GNUC__ 945#define _INLINE_ extern __inline__ 946#else /* For Watcom C */ 947#define _INLINE_ extern inline 948#endif 949#endif 950 951#ifndef EXT2_CUSTOM_MEMORY_ROUTINES 952/* 953 * Allocate memory 954 */ 955_INLINE_ errcode_t ext2fs_get_mem(unsigned long size, void *ptr) 956{ 957 void **pp = (void **)ptr; 958 959 *pp = malloc(size); 960 if (!*pp) 961 return EXT2_ET_NO_MEMORY; 962 return 0; 963} 964 965/* 966 * Free memory 967 */ 968_INLINE_ errcode_t ext2fs_free_mem(void *ptr) 969{ 970 void **pp = (void **)ptr; 971 972 free(*pp); 973 *pp = 0; 974 return 0; 975} 976 977/* 978 * Resize memory 979 */ 980_INLINE_ errcode_t ext2fs_resize_mem(unsigned long EXT2FS_ATTR((unused)) old_size, 981 unsigned long size, void *ptr) 982{ 983 void *p; 984 void **pp = (void **)ptr; 985 986 p = realloc(*pp, size); 987 if (!p) 988 return EXT2_ET_NO_MEMORY; 989 *pp = p; 990 return 0; 991} 992#endif /* Custom memory routines */ 993 994/* 995 * Mark a filesystem superblock as dirty 996 */ 997_INLINE_ void ext2fs_mark_super_dirty(ext2_filsys fs) 998{ 999 fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_CHANGED; 1000} 1001 1002/* 1003 * Mark a filesystem as changed 1004 */ 1005_INLINE_ void ext2fs_mark_changed(ext2_filsys fs) 1006{ 1007 fs->flags |= EXT2_FLAG_CHANGED; 1008} 1009 1010/* 1011 * Check to see if a filesystem has changed 1012 */ 1013_INLINE_ int ext2fs_test_changed(ext2_filsys fs) 1014{ 1015 return (fs->flags & EXT2_FLAG_CHANGED); 1016} 1017 1018/* 1019 * Mark a filesystem as valid 1020 */ 1021_INLINE_ void ext2fs_mark_valid(ext2_filsys fs) 1022{ 1023 fs->flags |= EXT2_FLAG_VALID; 1024} 1025 1026/* 1027 * Mark a filesystem as NOT valid 1028 */ 1029_INLINE_ void ext2fs_unmark_valid(ext2_filsys fs) 1030{ 1031 fs->flags &= ~EXT2_FLAG_VALID; 1032} 1033 1034/* 1035 * Check to see if a filesystem is valid 1036 */ 1037_INLINE_ int ext2fs_test_valid(ext2_filsys fs) 1038{ 1039 return (fs->flags & EXT2_FLAG_VALID); 1040} 1041 1042/* 1043 * Mark the inode bitmap as dirty 1044 */ 1045_INLINE_ void ext2fs_mark_ib_dirty(ext2_filsys fs) 1046{ 1047 fs->flags |= EXT2_FLAG_IB_DIRTY | EXT2_FLAG_CHANGED; 1048} 1049 1050/* 1051 * Mark the block bitmap as dirty 1052 */ 1053_INLINE_ void ext2fs_mark_bb_dirty(ext2_filsys fs) 1054{ 1055 fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_CHANGED; 1056} 1057 1058/* 1059 * Check to see if a filesystem's inode bitmap is dirty 1060 */ 1061_INLINE_ int ext2fs_test_ib_dirty(ext2_filsys fs) 1062{ 1063 return (fs->flags & EXT2_FLAG_IB_DIRTY); 1064} 1065 1066/* 1067 * Check to see if a filesystem's block bitmap is dirty 1068 */ 1069_INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs) 1070{ 1071 return (fs->flags & EXT2_FLAG_BB_DIRTY); 1072} 1073 1074/* 1075 * Return the group # of a block 1076 */ 1077_INLINE_ int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk) 1078{ 1079 return (blk - fs->super->s_first_data_block) / 1080 fs->super->s_blocks_per_group; 1081} 1082 1083/* 1084 * Return the group # of an inode number 1085 */ 1086_INLINE_ int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino) 1087{ 1088 return (ino - 1) / fs->super->s_inodes_per_group; 1089} 1090 1091_INLINE_ blk_t ext2fs_inode_data_blocks(ext2_filsys fs, 1092 struct ext2_inode *inode) 1093{ 1094 return inode->i_blocks - 1095 (inode->i_file_acl ? fs->blocksize >> 9 : 0); 1096} 1097#undef _INLINE_ 1098#endif 1099 1100#ifdef __cplusplus 1101} 1102#endif 1103 1104#endif /* _EXT2FS_EXT2FS_H */ 1105