ext2fs.h revision 8bd0c95908baa3af706b9e731daff9472bec74c9
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 <stdlib.h> 56 57#if EXT2_FLAT_INCLUDES 58#include "e2_types.h" 59#else 60#include <ext2fs/ext2_types.h> 61#endif /* EXT2_FLAT_INCLUDES */ 62 63typedef __u32 ext2_ino_t; 64typedef __u32 blk_t; 65typedef __u32 dgrp_t; 66typedef __u32 ext2_off_t; 67typedef __s64 e2_blkcnt_t; 68 69#if EXT2_FLAT_INCLUDES 70#include "com_err.h" 71#include "ext2_io.h" 72#include "ext2_err.h" 73#else 74#include <et/com_err.h> 75#include <ext2fs/ext2_io.h> 76#include <ext2fs/ext2_err.h> 77#endif 78 79/* 80 * Portability help for Microsoft Visual C++ 81 */ 82#ifdef _MSC_VER 83#define EXT2_QSORT_TYPE int __cdecl 84#else 85#define EXT2_QSORT_TYPE int 86#endif 87 88typedef struct struct_ext2_filsys *ext2_filsys; 89 90struct ext2fs_struct_generic_bitmap { 91 errcode_t magic; 92 ext2_filsys fs; 93 __u32 start, end; 94 __u32 real_end; 95 char * description; 96 char * bitmap; 97 errcode_t base_error_code; 98 __u32 reserved[7]; 99}; 100 101#define EXT2FS_MARK_ERROR 0 102#define EXT2FS_UNMARK_ERROR 1 103#define EXT2FS_TEST_ERROR 2 104 105typedef struct ext2fs_struct_generic_bitmap *ext2fs_generic_bitmap; 106typedef struct ext2fs_struct_generic_bitmap *ext2fs_inode_bitmap; 107typedef struct ext2fs_struct_generic_bitmap *ext2fs_block_bitmap; 108 109#ifdef EXT2_DYNAMIC_REV 110#define EXT2_FIRST_INODE(s) EXT2_FIRST_INO(s) 111#else 112#define EXT2_FIRST_INODE(s) EXT2_FIRST_INO 113#define EXT2_INODE_SIZE(s) sizeof(struct ext2_inode) 114#endif 115 116/* 117 * badblocks list definitions 118 */ 119 120typedef struct ext2_struct_badblocks_list *ext2_badblocks_list; 121typedef struct ext2_struct_badblocks_iterate *ext2_badblocks_iterate; 122 123/* old */ 124typedef struct ext2_struct_badblocks_list *badblocks_list; 125typedef struct ext2_struct_badblocks_iterate *badblocks_iterate; 126 127#define BADBLOCKS_FLAG_DIRTY 1 128 129/* 130 * ext2_dblist structure and abstractions (see dblist.c) 131 */ 132struct ext2_db_entry { 133 ext2_ino_t ino; 134 blk_t blk; 135 int blockcnt; 136}; 137 138typedef struct ext2_struct_dblist *ext2_dblist; 139 140#define DBLIST_ABORT 1 141 142/* 143 * ext2_fileio definitions 144 */ 145 146#define EXT2_FILE_WRITE 0x0001 147#define EXT2_FILE_CREATE 0x0002 148 149#define EXT2_FILE_MASK 0x00FF 150 151#define EXT2_FILE_BUF_DIRTY 0x4000 152#define EXT2_FILE_BUF_VALID 0x2000 153 154typedef struct ext2_file *ext2_file_t; 155 156#define EXT2_SEEK_SET 0 157#define EXT2_SEEK_CUR 1 158#define EXT2_SEEK_END 2 159 160/* 161 * Flags for the ext2_filsys structure and for ext2fs_open() 162 */ 163#define EXT2_FLAG_RW 0x01 164#define EXT2_FLAG_CHANGED 0x02 165#define EXT2_FLAG_DIRTY 0x04 166#define EXT2_FLAG_VALID 0x08 167#define EXT2_FLAG_IB_DIRTY 0x10 168#define EXT2_FLAG_BB_DIRTY 0x20 169#define EXT2_FLAG_SWAP_BYTES 0x40 170#define EXT2_FLAG_SWAP_BYTES_READ 0x80 171#define EXT2_FLAG_SWAP_BYTES_WRITE 0x100 172#define EXT2_FLAG_MASTER_SB_ONLY 0x200 173#define EXT2_FLAG_FORCE 0x400 174#define EXT2_FLAG_SUPER_ONLY 0x800 175#define EXT2_FLAG_JOURNAL_DEV_OK 0x1000 176#define EXT2_FLAG_IMAGE_FILE 0x2000 177 178/* 179 * Special flag in the ext2 inode i_flag field that means that this is 180 * a new inode. (So that ext2_write_inode() can clear extra fields.) 181 */ 182#define EXT2_NEW_INODE_FL 0x80000000 183 184/* 185 * Flags for mkjournal 186 * 187 * EXT2_MKJOURNAL_V1_SUPER Make a (deprecated) V1 journal superblock 188 */ 189#define EXT2_MKJOURNAL_V1_SUPER 0x0000001 190 191struct struct_ext2_filsys { 192 errcode_t magic; 193 io_channel io; 194 int flags; 195 char * device_name; 196 struct ext2_super_block * super; 197 int blocksize; 198 int fragsize; 199 dgrp_t group_desc_count; 200 unsigned long desc_blocks; 201 struct ext2_group_desc * group_desc; 202 int inode_blocks_per_group; 203 ext2fs_inode_bitmap inode_map; 204 ext2fs_block_bitmap block_map; 205 errcode_t (*get_blocks)(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); 206 errcode_t (*check_directory)(ext2_filsys fs, ext2_ino_t ino); 207 errcode_t (*write_bitmaps)(ext2_filsys fs); 208 errcode_t (*read_inode)(ext2_filsys fs, ext2_ino_t ino, 209 struct ext2_inode *inode); 210 errcode_t (*write_inode)(ext2_filsys fs, ext2_ino_t ino, 211 struct ext2_inode *inode); 212 badblocks_list badblocks; 213 ext2_dblist dblist; 214 __u32 stride; /* for mke2fs */ 215 struct ext2_super_block * orig_super; 216 struct ext2_image_hdr * image_header; 217 __u32 umask; 218 /* 219 * Reserved for future expansion 220 */ 221 __u32 reserved[8]; 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#define DIRENT_FLAG_INCLUDE_REMOVED 2 304 305#define DIRENT_DOT_FILE 1 306#define DIRENT_DOT_DOT_FILE 2 307#define DIRENT_OTHER_FILE 3 308#define DIRENT_DELETED_FILE 4 309 310/* 311 * Inode scan definitions 312 */ 313typedef struct ext2_struct_inode_scan *ext2_inode_scan; 314 315/* 316 * ext2fs_scan flags 317 */ 318#define EXT2_SF_CHK_BADBLOCKS 0x0001 319#define EXT2_SF_BAD_INODE_BLK 0x0002 320#define EXT2_SF_BAD_EXTRA_BYTES 0x0004 321#define EXT2_SF_SKIP_MISSING_ITABLE 0x0008 322 323/* 324 * ext2fs_check_if_mounted flags 325 */ 326#define EXT2_MF_MOUNTED 1 327#define EXT2_MF_ISROOT 2 328#define EXT2_MF_READONLY 4 329#define EXT2_MF_SWAP 8 330 331/* 332 * Ext2/linux mode flags. We define them here so that we don't need 333 * to depend on the OS's sys/stat.h, since we may be compiling on a 334 * non-Linux system. 335 */ 336#define LINUX_S_IFMT 00170000 337#define LINUX_S_IFSOCK 0140000 338#define LINUX_S_IFLNK 0120000 339#define LINUX_S_IFREG 0100000 340#define LINUX_S_IFBLK 0060000 341#define LINUX_S_IFDIR 0040000 342#define LINUX_S_IFCHR 0020000 343#define LINUX_S_IFIFO 0010000 344#define LINUX_S_ISUID 0004000 345#define LINUX_S_ISGID 0002000 346#define LINUX_S_ISVTX 0001000 347 348#define LINUX_S_IRWXU 00700 349#define LINUX_S_IRUSR 00400 350#define LINUX_S_IWUSR 00200 351#define LINUX_S_IXUSR 00100 352 353#define LINUX_S_IRWXG 00070 354#define LINUX_S_IRGRP 00040 355#define LINUX_S_IWGRP 00020 356#define LINUX_S_IXGRP 00010 357 358#define LINUX_S_IRWXO 00007 359#define LINUX_S_IROTH 00004 360#define LINUX_S_IWOTH 00002 361#define LINUX_S_IXOTH 00001 362 363#define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK) 364#define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG) 365#define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR) 366#define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR) 367#define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK) 368#define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO) 369#define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK) 370 371/* 372 * ext2_icount_t abstraction 373 */ 374#define EXT2_ICOUNT_OPT_INCREMENT 0x01 375 376typedef struct ext2_icount *ext2_icount_t; 377 378/* 379 * Flags for ext2fs_bmap 380 */ 381#define BMAP_ALLOC 1 382 383/* 384 * Flags for imager.c functions 385 */ 386#define IMAGER_FLAG_INODEMAP 1 387#define IMAGER_FLAG_SPARSEWRITE 2 388 389/* 390 * For checking structure magic numbers... 391 */ 392 393#define EXT2_CHECK_MAGIC(struct, code) \ 394 if ((struct)->magic != (code)) return (code) 395 396 397/* 398 * For ext2 compression support 399 */ 400#define EXT2FS_COMPRESSED_BLKADDR ((blk_t) 0xffffffff) 401#define HOLE_BLKADDR(_b) ((_b) == 0 || (_b) == EXT2FS_COMPRESSED_BLKADDR) 402 403/* 404 * Features supported by this version of the library 405 */ 406#define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\ 407 EXT2_FEATURE_COMPAT_IMAGIC_INODES|\ 408 EXT3_FEATURE_COMPAT_HAS_JOURNAL|\ 409 EXT2_FEATURE_COMPAT_EXT_ATTR) 410 411/* This #ifdef is temporary until compression is fully supported */ 412#ifdef ENABLE_COMPRESSION 413#ifndef I_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL 414/* If the below warning bugs you, then have 415 `CPPFLAGS=-DI_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL' in your 416 environment at configure time. */ 417 #warning "Compression support is experimental" 418#endif 419#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 420 EXT2_FEATURE_INCOMPAT_COMPRESSION|\ 421 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 422 EXT3_FEATURE_INCOMPAT_RECOVER) 423#else 424#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 425 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 426 EXT3_FEATURE_INCOMPAT_RECOVER) 427#endif 428#define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\ 429 EXT2_FEATURE_RO_COMPAT_LARGE_FILE) 430/* 431 * function prototypes 432 */ 433 434/* alloc.c */ 435extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode, 436 ext2fs_inode_bitmap map, ext2_ino_t *ret); 437extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal, 438 ext2fs_block_bitmap map, blk_t *ret); 439extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start, 440 blk_t finish, int num, 441 ext2fs_block_bitmap map, 442 blk_t *ret); 443extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal, 444 char *block_buf, blk_t *ret); 445 446/* alloc_stats.c */ 447void ext2fs_inode_alloc_stats(ext2_filsys fs, ext2_ino_t ino, int inuse); 448void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse); 449 450/* alloc_tables.c */ 451extern errcode_t ext2fs_allocate_tables(ext2_filsys fs); 452extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group, 453 ext2fs_block_bitmap bmap); 454 455/* badblocks.c */ 456extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret, 457 int size); 458extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb, 459 blk_t blk); 460extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb, 461 blk_t blk); 462extern errcode_t 463 ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb, 464 ext2_badblocks_iterate *ret); 465extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter, 466 blk_t *blk); 467extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter); 468extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src, 469 ext2_badblocks_list *dest); 470extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1, 471 ext2_badblocks_list bb2); 472 473/* bb_compat */ 474extern errcode_t badblocks_list_create(badblocks_list *ret, int size); 475extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk); 476extern int badblocks_list_test(badblocks_list bb, blk_t blk); 477extern errcode_t badblocks_list_iterate_begin(badblocks_list bb, 478 badblocks_iterate *ret); 479extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk); 480extern void badblocks_list_iterate_end(badblocks_iterate iter); 481extern void badblocks_list_free(badblocks_list bb); 482 483/* bb_inode.c */ 484extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs, 485 ext2_badblocks_list bb_list); 486 487/* bitmaps.c */ 488extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs); 489extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs); 490extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs); 491extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs); 492extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start, 493 __u32 end, 494 __u32 real_end, 495 const char *descr, 496 ext2fs_generic_bitmap *ret); 497extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs, 498 const char *descr, 499 ext2fs_block_bitmap *ret); 500extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs, 501 const char *descr, 502 ext2fs_inode_bitmap *ret); 503extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap, 504 ext2_ino_t end, ext2_ino_t *oend); 505extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap, 506 blk_t end, blk_t *oend); 507extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap); 508extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap); 509extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs); 510extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs); 511 512/* block.c */ 513extern errcode_t ext2fs_block_iterate(ext2_filsys fs, 514 ext2_ino_t ino, 515 int flags, 516 char *block_buf, 517 int (*func)(ext2_filsys fs, 518 blk_t *blocknr, 519 int blockcnt, 520 void *priv_data), 521 void *priv_data); 522errcode_t ext2fs_block_iterate2(ext2_filsys fs, 523 ext2_ino_t ino, 524 int flags, 525 char *block_buf, 526 int (*func)(ext2_filsys fs, 527 blk_t *blocknr, 528 e2_blkcnt_t blockcnt, 529 blk_t ref_blk, 530 int ref_offset, 531 void *priv_data), 532 void *priv_data); 533 534/* bmap.c */ 535extern errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino, 536 struct ext2_inode *inode, 537 char *block_buf, int bmap_flags, 538 blk_t block, blk_t *phys_blk); 539 540 541#if 0 542/* bmove.c */ 543extern errcode_t ext2fs_move_blocks(ext2_filsys fs, 544 ext2fs_block_bitmap reserve, 545 ext2fs_block_bitmap alloc_map, 546 int flags); 547#endif 548 549/* check_desc.c */ 550extern errcode_t ext2fs_check_desc(ext2_filsys fs); 551 552/* closefs.c */ 553extern errcode_t ext2fs_close(ext2_filsys fs); 554extern errcode_t ext2fs_flush(ext2_filsys fs); 555extern int ext2fs_bg_has_super(ext2_filsys fs, int group_block); 556extern void ext2fs_update_dynamic_rev(ext2_filsys fs); 557 558/* cmp_bitmaps.c */ 559extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1, 560 ext2fs_block_bitmap bm2); 561extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1, 562 ext2fs_inode_bitmap bm2); 563 564/* dblist.c */ 565 566extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs); 567extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist); 568extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ext2_ino_t ino, 569 blk_t blk, int blockcnt); 570extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist, 571 int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info, 572 void *priv_data), 573 void *priv_data); 574extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ext2_ino_t ino, 575 blk_t blk, int blockcnt); 576extern errcode_t ext2fs_copy_dblist(ext2_dblist src, 577 ext2_dblist *dest); 578extern int ext2fs_dblist_count(ext2_dblist dblist); 579 580/* dblist_dir.c */ 581extern errcode_t 582 ext2fs_dblist_dir_iterate(ext2_dblist dblist, 583 int flags, 584 char *block_buf, 585 int (*func)(ext2_ino_t dir, 586 int entry, 587 struct ext2_dir_entry *dirent, 588 int offset, 589 int blocksize, 590 char *buf, 591 void *priv_data), 592 void *priv_data); 593 594/* dirblock.c */ 595extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block, 596 void *buf); 597extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block, 598 void *buf); 599 600/* dir_iterate.c */ 601extern errcode_t ext2fs_dir_iterate(ext2_filsys fs, 602 ext2_ino_t dir, 603 int flags, 604 char *block_buf, 605 int (*func)(struct ext2_dir_entry *dirent, 606 int offset, 607 int blocksize, 608 char *buf, 609 void *priv_data), 610 void *priv_data); 611extern errcode_t ext2fs_dir_iterate2(ext2_filsys fs, 612 ext2_ino_t dir, 613 int flags, 614 char *block_buf, 615 int (*func)(ext2_ino_t dir, 616 int entry, 617 struct ext2_dir_entry *dirent, 618 int offset, 619 int blocksize, 620 char *buf, 621 void *priv_data), 622 void *priv_data); 623 624/* dupfs.c */ 625extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest); 626 627/* expanddir.c */ 628extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir); 629 630/* ext_attr.c */ 631void ext2fs_swap_ext_attr(ext2_filsys fs, char *to, char *from); 632extern errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf); 633extern errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block, void *buf); 634/* fileio.c */ 635extern errcode_t ext2fs_file_open(ext2_filsys fs, ext2_ino_t ino, 636 int flags, ext2_file_t *ret); 637extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file); 638extern errcode_t ext2fs_file_close(ext2_file_t file); 639extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf, 640 unsigned int wanted, unsigned int *got); 641extern errcode_t ext2fs_file_write(ext2_file_t file, void *buf, 642 unsigned int nbytes, unsigned int *written); 643extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset, 644 int whence, ext2_off_t *ret_pos); 645extern ext2_off_t ext2fs_file_get_size(ext2_file_t file); 646extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size); 647 648/* finddev.c */ 649extern char *ext2fs_find_block_device(dev_t device); 650 651/* flushb.c */ 652extern errcode_t ext2fs_sync_device(int fd, int flushb); 653 654/* freefs.c */ 655extern void ext2fs_free(ext2_filsys fs); 656extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap); 657extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap); 658extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap); 659extern void ext2fs_free_dblist(ext2_dblist dblist); 660extern void ext2fs_badblocks_list_free(badblocks_list bb); 661 662/* getsize.c */ 663extern errcode_t ext2fs_get_device_size(const char *file, int blocksize, 664 blk_t *retblocks); 665 666/* imager.c */ 667extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags); 668extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags); 669extern errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd, int flags); 670extern errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd, int flags); 671extern errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags); 672extern errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags); 673 674/* initialize.c */ 675extern errcode_t ext2fs_initialize(const char *name, int flags, 676 struct ext2_super_block *param, 677 io_manager manager, ext2_filsys *ret_fs); 678 679/* inode.c */ 680extern errcode_t ext2fs_flush_icache(ext2_filsys fs); 681extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks, 682 ext2_inode_scan *ret_scan); 683extern void ext2fs_close_inode_scan(ext2_inode_scan scan); 684extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino, 685 struct ext2_inode *inode); 686extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan, 687 int group); 688extern void ext2fs_set_inode_callback 689 (ext2_inode_scan scan, 690 errcode_t (*done_group)(ext2_filsys fs, 691 ext2_inode_scan scan, 692 dgrp_t group, 693 void * priv_data), 694 void *done_group_data); 695extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags, 696 int clear_flags); 697extern errcode_t ext2fs_read_inode (ext2_filsys fs, ext2_ino_t ino, 698 struct ext2_inode * inode); 699extern errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino, 700 struct ext2_inode * inode); 701extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); 702extern errcode_t ext2fs_check_directory(ext2_filsys fs, ext2_ino_t ino); 703 704/* icount.c */ 705extern void ext2fs_free_icount(ext2_icount_t icount); 706extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags, int size, 707 ext2_icount_t hint, ext2_icount_t *ret); 708extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags, int size, 709 ext2_icount_t *ret); 710extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ext2_ino_t ino, 711 __u16 *ret); 712extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ext2_ino_t ino, 713 __u16 *ret); 714extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ext2_ino_t ino, 715 __u16 *ret); 716extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ext2_ino_t ino, 717 __u16 count); 718extern ext2_ino_t ext2fs_get_icount_size(ext2_icount_t icount); 719errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *); 720 721/* ismounted.c */ 722extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags); 723extern errcode_t ext2fs_check_mount_point(const char *device, int *mount_flags, 724 char *mtpt, int mtlen); 725 726/* namei.c */ 727extern errcode_t ext2fs_lookup(ext2_filsys fs, ext2_ino_t dir, const char *name, 728 int namelen, char *buf, ext2_ino_t *inode); 729extern errcode_t ext2fs_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 730 const char *name, ext2_ino_t *inode); 731errcode_t ext2fs_namei_follow(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 732 const char *name, ext2_ino_t *inode); 733extern errcode_t ext2fs_follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 734 ext2_ino_t inode, ext2_ino_t *res_inode); 735 736/* native.c */ 737int ext2fs_native_flag(void); 738 739/* newdir.c */ 740extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino, 741 ext2_ino_t parent_ino, char **block); 742 743/* mkdir.c */ 744extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum, 745 const char *name); 746 747/* mkjournal.c */ 748extern errcode_t ext2fs_create_journal_superblock(ext2_filsys fs, 749 __u32 size, int flags, 750 char **ret_jsb); 751extern errcode_t ext2fs_add_journal_device(ext2_filsys fs, 752 ext2_filsys journal_dev); 753extern errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t size, 754 int flags); 755 756/* openfs.c */ 757extern errcode_t ext2fs_open(const char *name, int flags, int superblock, 758 int block_size, io_manager manager, 759 ext2_filsys *ret_fs); 760 761/* get_pathname.c */ 762extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino, 763 char **name); 764 765/* link.c */ 766errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name, 767 ext2_ino_t ino, int flags); 768errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir, const char *name, 769 ext2_ino_t ino, int flags); 770 771/* read_bb.c */ 772extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs, 773 ext2_badblocks_list *bb_list); 774 775/* read_bb_file.c */ 776extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f, 777 ext2_badblocks_list *bb_list, 778 void *private, 779 void (*invalid)(ext2_filsys fs, 780 blk_t blk, 781 char *badstr, 782 void *private)); 783extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f, 784 ext2_badblocks_list *bb_list, 785 void (*invalid)(ext2_filsys fs, 786 blk_t blk)); 787 788/* rs_bitmap.c */ 789extern errcode_t ext2fs_resize_generic_bitmap(__u32 new_end, 790 __u32 new_real_end, 791 ext2fs_generic_bitmap bmap); 792extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end, 793 ext2fs_inode_bitmap bmap); 794extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end, 795 ext2fs_block_bitmap bmap); 796extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src, 797 ext2fs_generic_bitmap *dest); 798 799/* swapfs.c */ 800extern void ext2fs_swap_super(struct ext2_super_block * super); 801extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp); 802extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t, 803 struct ext2_inode *f, int hostorder); 804 805/* valid_blk.c */ 806extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode); 807 808/* version.c */ 809extern int ext2fs_parse_version_string(const char *ver_string); 810extern int ext2fs_get_library_version(const char **ver_string, 811 const char **date_string); 812 813/* write_bb_file.c */ 814extern errcode_t ext2fs_write_bb_FILE(ext2_badblocks_list bb_list, 815 unsigned int flags, 816 FILE *f); 817 818 819/* inline functions */ 820extern errcode_t ext2fs_get_mem(unsigned long size, void **ptr); 821extern errcode_t ext2fs_free_mem(void **ptr); 822extern errcode_t ext2fs_resize_mem(unsigned long old_size, 823 unsigned long size, void **ptr); 824extern void ext2fs_mark_super_dirty(ext2_filsys fs); 825extern void ext2fs_mark_changed(ext2_filsys fs); 826extern int ext2fs_test_changed(ext2_filsys fs); 827extern void ext2fs_mark_valid(ext2_filsys fs); 828extern void ext2fs_unmark_valid(ext2_filsys fs); 829extern int ext2fs_test_valid(ext2_filsys fs); 830extern void ext2fs_mark_ib_dirty(ext2_filsys fs); 831extern void ext2fs_mark_bb_dirty(ext2_filsys fs); 832extern int ext2fs_test_ib_dirty(ext2_filsys fs); 833extern int ext2fs_test_bb_dirty(ext2_filsys fs); 834extern int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk); 835extern int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino); 836 837/* 838 * The actual inlined functions definitions themselves... 839 * 840 * If NO_INLINE_FUNCS is defined, then we won't try to do inline 841 * functions at all! 842 */ 843#if (defined(INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS)) 844#ifdef INCLUDE_INLINE_FUNCS 845#define _INLINE_ extern 846#else 847#ifdef __GNUC__ 848#define _INLINE_ extern __inline__ 849#else /* For Watcom C */ 850#define _INLINE_ extern inline 851#endif 852#endif 853 854#ifndef EXT2_CUSTOM_MEMORY_ROUTINES 855/* 856 * Allocate memory 857 */ 858_INLINE_ errcode_t ext2fs_get_mem(unsigned long size, void **ptr) 859{ 860 *ptr = malloc(size); 861 if (!*ptr) 862 return EXT2_ET_NO_MEMORY; 863 return 0; 864} 865 866/* 867 * Free memory 868 */ 869_INLINE_ errcode_t ext2fs_free_mem(void **ptr) 870{ 871 free(*ptr); 872 *ptr = 0; 873 return 0; 874} 875 876/* 877 * Resize memory 878 */ 879_INLINE_ errcode_t ext2fs_resize_mem(unsigned long old_size, 880 unsigned long size, void **ptr) 881{ 882 void *p; 883 884 p = realloc(*ptr, size); 885 if (!p) 886 return EXT2_ET_NO_MEMORY; 887 *ptr = p; 888 return 0; 889} 890#endif /* Custom memory routines */ 891 892/* 893 * Mark a filesystem superblock as dirty 894 */ 895_INLINE_ void ext2fs_mark_super_dirty(ext2_filsys fs) 896{ 897 fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_CHANGED; 898} 899 900/* 901 * Mark a filesystem as changed 902 */ 903_INLINE_ void ext2fs_mark_changed(ext2_filsys fs) 904{ 905 fs->flags |= EXT2_FLAG_CHANGED; 906} 907 908/* 909 * Check to see if a filesystem has changed 910 */ 911_INLINE_ int ext2fs_test_changed(ext2_filsys fs) 912{ 913 return (fs->flags & EXT2_FLAG_CHANGED); 914} 915 916/* 917 * Mark a filesystem as valid 918 */ 919_INLINE_ void ext2fs_mark_valid(ext2_filsys fs) 920{ 921 fs->flags |= EXT2_FLAG_VALID; 922} 923 924/* 925 * Mark a filesystem as NOT valid 926 */ 927_INLINE_ void ext2fs_unmark_valid(ext2_filsys fs) 928{ 929 fs->flags &= ~EXT2_FLAG_VALID; 930} 931 932/* 933 * Check to see if a filesystem is valid 934 */ 935_INLINE_ int ext2fs_test_valid(ext2_filsys fs) 936{ 937 return (fs->flags & EXT2_FLAG_VALID); 938} 939 940/* 941 * Mark the inode bitmap as dirty 942 */ 943_INLINE_ void ext2fs_mark_ib_dirty(ext2_filsys fs) 944{ 945 fs->flags |= EXT2_FLAG_IB_DIRTY | EXT2_FLAG_CHANGED; 946} 947 948/* 949 * Mark the block bitmap as dirty 950 */ 951_INLINE_ void ext2fs_mark_bb_dirty(ext2_filsys fs) 952{ 953 fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_CHANGED; 954} 955 956/* 957 * Check to see if a filesystem's inode bitmap is dirty 958 */ 959_INLINE_ int ext2fs_test_ib_dirty(ext2_filsys fs) 960{ 961 return (fs->flags & EXT2_FLAG_IB_DIRTY); 962} 963 964/* 965 * Check to see if a filesystem's block bitmap is dirty 966 */ 967_INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs) 968{ 969 return (fs->flags & EXT2_FLAG_BB_DIRTY); 970} 971 972/* 973 * Return the group # of a block 974 */ 975_INLINE_ int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk) 976{ 977 return (blk - fs->super->s_first_data_block) / 978 fs->super->s_blocks_per_group; 979} 980 981/* 982 * Return the group # of an inode number 983 */ 984_INLINE_ int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino) 985{ 986 return (ino - 1) / fs->super->s_inodes_per_group; 987} 988#undef _INLINE_ 989#endif 990 991#ifdef __cplusplus 992} 993#endif 994 995#endif /* _EXT2FS_EXT2FS_H */ 996