ext2fs.h revision a917d1ccf49605b3009f4e7225f00b81fc16100b
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 0 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 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 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 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 174 175/* 176 * Special flag in the ext2 inode i_flag field that means that this is 177 * a new inode. (So that ext2_write_inode() can clear extra fields.) 178 */ 179#define EXT2_NEW_INODE_FL 0x80000000 180 181/* 182 * Flags for mkjournal 183 * 184 * EXT2_MKJOURNAL_V1_SUPER Make a (deprecated) V1 journal superblock 185 */ 186#define EXT2_MKJOURNAL_V1_SUPER 0x0000001 187 188struct struct_ext2_filsys { 189 errcode_t magic; 190 io_channel io; 191 int flags; 192 char * device_name; 193 struct ext2_super_block * super; 194 int blocksize; 195 int fragsize; 196 dgrp_t group_desc_count; 197 unsigned long desc_blocks; 198 struct ext2_group_desc * group_desc; 199 int inode_blocks_per_group; 200 ext2fs_inode_bitmap inode_map; 201 ext2fs_block_bitmap block_map; 202 errcode_t (*get_blocks)(ext2_filsys fs, ino_t ino, blk_t *blocks); 203 errcode_t (*check_directory)(ext2_filsys fs, ino_t ino); 204 errcode_t (*write_bitmaps)(ext2_filsys fs); 205 errcode_t (*read_inode)(ext2_filsys fs, ino_t ino, 206 struct ext2_inode *inode); 207 errcode_t (*write_inode)(ext2_filsys fs, ino_t ino, 208 struct ext2_inode *inode); 209 badblocks_list badblocks; 210 ext2_dblist dblist; 211 __u32 stride; /* for mke2fs */ 212 struct ext2_super_block * orig_super; 213 /* 214 * Reserved for future expansion 215 */ 216 __u32 reserved[10]; 217 218 /* 219 * Reserved for the use of the calling application. 220 */ 221 void * priv_data; 222 223 /* 224 * Inode cache 225 */ 226 struct ext2_inode_cache *icache; 227}; 228 229#if EXT2_FLAT_INCLUDES 230#include "e2_bitops.h" 231#else 232#include "ext2fs/bitops.h" 233#endif 234 235/* 236 * Return flags for the block iterator functions 237 */ 238#define BLOCK_CHANGED 1 239#define BLOCK_ABORT 2 240#define BLOCK_ERROR 4 241 242/* 243 * Block interate flags 244 * 245 * BLOCK_FLAG_APPEND, or BLOCK_FLAG_HOLE, indicates that the interator 246 * function should be called on blocks where the block number is zero. 247 * This is used by ext2fs_expand_dir() to be able to add a new block 248 * to an inode. It can also be used for programs that want to be able 249 * to deal with files that contain "holes". 250 * 251 * BLOCK_FLAG_TRAVERSE indicates that the iterator function for the 252 * indirect, doubly indirect, etc. blocks should be called after all 253 * of the blocks containined in the indirect blocks are processed. 254 * This is useful if you are going to be deallocating blocks from an 255 * inode. 256 * 257 * BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be 258 * called for data blocks only. 259 * 260 * BLOCK_FLAG_NO_LARGE is for internal use only. It informs 261 * ext2fs_block_iterate2 that large files won't be accepted. 262 */ 263#define BLOCK_FLAG_APPEND 1 264#define BLOCK_FLAG_HOLE 1 265#define BLOCK_FLAG_DEPTH_TRAVERSE 2 266#define BLOCK_FLAG_DATA_ONLY 4 267 268#define BLOCK_FLAG_NO_LARGE 0x1000 269 270/* 271 * Magic "block count" return values for the block iterator function. 272 */ 273#define BLOCK_COUNT_IND (-1) 274#define BLOCK_COUNT_DIND (-2) 275#define BLOCK_COUNT_TIND (-3) 276#define BLOCK_COUNT_TRANSLATOR (-4) 277 278#if 0 279/* 280 * Flags for ext2fs_move_blocks 281 */ 282#define EXT2_BMOVE_GET_DBLIST 0x0001 283#define EXT2_BMOVE_DEBUG 0x0002 284#endif 285 286/* 287 * Return flags for the directory iterator functions 288 */ 289#define DIRENT_CHANGED 1 290#define DIRENT_ABORT 2 291#define DIRENT_ERROR 3 292 293/* 294 * Directory iterator flags 295 */ 296 297#define DIRENT_FLAG_INCLUDE_EMPTY 1 298 299 300#define DIRENT_DOT_FILE 1 301#define DIRENT_DOT_DOT_FILE 2 302#define DIRENT_OTHER_FILE 3 303 304/* 305 * Inode scan definitions 306 */ 307typedef struct ext2_struct_inode_scan *ext2_inode_scan; 308 309/* 310 * ext2fs_scan flags 311 */ 312#define EXT2_SF_CHK_BADBLOCKS 0x0001 313#define EXT2_SF_BAD_INODE_BLK 0x0002 314#define EXT2_SF_BAD_EXTRA_BYTES 0x0004 315#define EXT2_SF_SKIP_MISSING_ITABLE 0x0008 316 317/* 318 * ext2fs_check_if_mounted flags 319 */ 320#define EXT2_MF_MOUNTED 1 321#define EXT2_MF_ISROOT 2 322#define EXT2_MF_READONLY 4 323 324/* 325 * Ext2/linux mode flags. We define them here so that we don't need 326 * to depend on the OS's sys/stat.h, since we may be compiling on a 327 * non-Linux system. 328 */ 329#define LINUX_S_IFMT 00170000 330#define LINUX_S_IFSOCK 0140000 331#define LINUX_S_IFLNK 0120000 332#define LINUX_S_IFREG 0100000 333#define LINUX_S_IFBLK 0060000 334#define LINUX_S_IFDIR 0040000 335#define LINUX_S_IFCHR 0020000 336#define LINUX_S_IFIFO 0010000 337#define LINUX_S_ISUID 0004000 338#define LINUX_S_ISGID 0002000 339#define LINUX_S_ISVTX 0001000 340 341#define LINUX_S_IRWXU 00700 342#define LINUX_S_IRUSR 00400 343#define LINUX_S_IWUSR 00200 344#define LINUX_S_IXUSR 00100 345 346#define LINUX_S_IRWXG 00070 347#define LINUX_S_IRGRP 00040 348#define LINUX_S_IWGRP 00020 349#define LINUX_S_IXGRP 00010 350 351#define LINUX_S_IRWXO 00007 352#define LINUX_S_IROTH 00004 353#define LINUX_S_IWOTH 00002 354#define LINUX_S_IXOTH 00001 355 356#define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK) 357#define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG) 358#define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR) 359#define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR) 360#define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK) 361#define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO) 362#define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK) 363 364/* 365 * ext2_icount_t abstraction 366 */ 367#define EXT2_ICOUNT_OPT_INCREMENT 0x01 368 369typedef struct ext2_icount *ext2_icount_t; 370 371/* 372 * Flags for ext2fs_bmap 373 */ 374#define BMAP_ALLOC 1 375 376/* 377 * Flags for imager.c functions 378 */ 379#define IMAGER_FLAG_INODEMAP 1 380#define IMAGER_FLAG_SPARSEWRITE 2 381 382/* 383 * For checking structure magic numbers... 384 */ 385 386#define EXT2_CHECK_MAGIC(struct, code) \ 387 if ((struct)->magic != (code)) return (code) 388 389 390/* 391 * The ext2fs library private definition of the ext2 superblock, so we 392 * don't have to depend on the kernel's definition of the superblock, 393 * which might not have the latest features. 394 */ 395struct ext2fs_sb { 396 __u32 s_inodes_count; /* Inodes count */ 397 __u32 s_blocks_count; /* Blocks count */ 398 __u32 s_r_blocks_count; /* Reserved blocks count */ 399 __u32 s_free_blocks_count; /* Free blocks count */ 400 __u32 s_free_inodes_count; /* Free inodes count */ 401 __u32 s_first_data_block; /* First Data Block */ 402 __u32 s_log_block_size; /* Block size */ 403 __s32 s_log_frag_size; /* Fragment size */ 404 __u32 s_blocks_per_group; /* # Blocks per group */ 405 __u32 s_frags_per_group; /* # Fragments per group */ 406 __u32 s_inodes_per_group; /* # Inodes per group */ 407 __u32 s_mtime; /* Mount time */ 408 __u32 s_wtime; /* Write time */ 409 __u16 s_mnt_count; /* Mount count */ 410 __s16 s_max_mnt_count; /* Maximal mount count */ 411 __u16 s_magic; /* Magic signature */ 412 __u16 s_state; /* File system state */ 413 __u16 s_errors; /* Behaviour when detecting errors */ 414 __u16 s_minor_rev_level; /* minor revision level */ 415 __u32 s_lastcheck; /* time of last check */ 416 __u32 s_checkinterval; /* max. time between checks */ 417 __u32 s_creator_os; /* OS */ 418 __u32 s_rev_level; /* Revision level */ 419 __u16 s_def_resuid; /* Default uid for reserved blocks */ 420 __u16 s_def_resgid; /* Default gid for reserved blocks */ 421 /* 422 * These fields are for EXT2_DYNAMIC_REV superblocks only. 423 * 424 * Note: the difference between the compatible feature set and 425 * the incompatible feature set is that if there is a bit set 426 * in the incompatible feature set that the kernel doesn't 427 * know about, it should refuse to mount the filesystem. 428 * 429 * e2fsck's requirements are more strict; if it doesn't know 430 * about a feature in either the compatible or incompatible 431 * feature set, it must abort and not try to meddle with 432 * things it doesn't understand... 433 */ 434 __u32 s_first_ino; /* First non-reserved inode */ 435 __u16 s_inode_size; /* size of inode structure */ 436 __u16 s_block_group_nr; /* block group # of this superblock */ 437 __u32 s_feature_compat; /* compatible feature set */ 438 __u32 s_feature_incompat; /* incompatible feature set */ 439 __u32 s_feature_ro_compat; /* readonly-compatible feature set */ 440 __u8 s_uuid[16]; /* 128-bit uuid for volume */ 441 char s_volume_name[16]; /* volume name */ 442 char s_last_mounted[64]; /* directory where last mounted */ 443 __u32 s_algorithm_usage_bitmap; /* For compression */ 444 /* 445 * Performance hints. Directory preallocation should only 446 * happen if the EXT2_FEATURE_COMPAT_DIR_PREALLOC flag is on. 447 */ 448 __u8 s_prealloc_blocks; /* Nr of blocks to try to preallocate*/ 449 __u8 s_prealloc_dir_blocks; /* Nr to preallocate for dirs */ 450 __u16 s_padding1; 451 /* 452 * Journaling support. 453 */ 454 __u8 s_journal_uuid[16]; /* uuid of journal superblock */ 455 __u32 s_journal_inum; /* inode number of journal file */ 456 __u32 s_journal_dev; /* device number of journal file */ 457 __u32 s_last_orphan; /* start of list of inodes to delete */ 458 459 __u32 s_reserved[197]; /* Padding to the end of the block */ 460}; 461 462#define EXT2FS_COMPRESSED_BLKADDR ((blk_t) 0xffffffff) 463#define HOLE_BLKADDR(_b) ((_b) == 0 || (_b) == EXT2FS_COMPRESSED_BLKADDR) 464 465/* 466 * Feature set definitions (that might not be in ext2_fs.h 467 */ 468 469#ifndef EXT2_FEATURE_COMPAT_DIR_PREALLOC 470#define EXT2_FEATURE_COMPAT_DIR_PREALLOC 0x0001 471#endif 472 473#ifndef EXT2_FEATURE_COMPAT_IMAGIC_INODES /* for AFS, etc. */ 474#define EXT2_FEATURE_COMPAT_IMAGIC_INODES 0x0002 475#define EXT2_IMAGIC_FL 0x00002000 476#endif 477 478#ifndef EXT3_FEATURE_COMPAT_HAS_JOURNAL 479#define EXT3_FEATURE_COMPAT_HAS_JOURNAL 0x0004 480#endif 481 482#ifndef EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER 483#define EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER 0x0001 484#endif 485 486#ifndef EXT2_FEATURE_RO_COMPAT_LARGE_FILE 487#define EXT2_FEATURE_RO_COMPAT_LARGE_FILE 0x0002 488#define i_size_high i_dir_acl 489#endif 490 491#ifndef EXT2_FEATURE_RO_COMPAT_BTREE_DIR 492#define EXT2_FEATURE_RO_COMPAT_BTREE_DIR 0x0004 493#endif 494 495#ifndef EXT2_FEATURE_INCOMPAT_COMPRESSION 496#define EXT2_FEATURE_INCOMPAT_COMPRESSION 0x0001 497#endif 498 499#ifndef EXT2_FEATURE_INCOMPAT_FILETYPE 500#define EXT2_FEATURE_INCOMPAT_FILETYPE 0x0002 501#endif 502 503#ifndef EXT3_FEATURE_INCOMPAT_RECOVER 504#define EXT3_FEATURE_INCOMPAT_RECOVER 0x0004 /* Needs recovery */ 505#endif 506 507#define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\ 508 EXT2_FEATURE_COMPAT_IMAGIC_INODES|\ 509 EXT3_FEATURE_COMPAT_HAS_JOURNAL) 510/* This #ifdef is temporary until compression is fully supported */ 511#ifdef ENABLE_COMPRESSION 512#ifndef I_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL 513/* If the below warning bugs you, then have 514 `CPPFLAGS=-DI_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL' in your 515 environment at configure time. */ 516#warning "Compression support is experimental" 517#endif 518#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 519 EXT2_FEATURE_INCOMPAT_COMPRESSION|\ 520 EXT3_FEATURE_INCOMPAT_RECOVER) 521#else 522#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 523 EXT3_FEATURE_INCOMPAT_RECOVER) 524#endif 525#define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\ 526 EXT2_FEATURE_RO_COMPAT_LARGE_FILE) 527/* 528 * function prototypes 529 */ 530 531/* alloc.c */ 532extern errcode_t ext2fs_new_inode(ext2_filsys fs, ino_t dir, int mode, 533 ext2fs_inode_bitmap map, ino_t *ret); 534extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal, 535 ext2fs_block_bitmap map, blk_t *ret); 536extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start, 537 blk_t finish, int num, 538 ext2fs_block_bitmap map, 539 blk_t *ret); 540extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal, 541 char *block_buf, blk_t *ret); 542 543/* alloc_tables.c */ 544extern errcode_t ext2fs_allocate_tables(ext2_filsys fs); 545extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group, 546 ext2fs_block_bitmap bmap); 547 548/* badblocks.c */ 549extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret, 550 int size); 551extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb, 552 blk_t blk); 553extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb, 554 blk_t blk); 555extern errcode_t 556 ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb, 557 ext2_badblocks_iterate *ret); 558extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter, 559 blk_t *blk); 560extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter); 561extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src, 562 ext2_badblocks_list *dest); 563extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1, 564 ext2_badblocks_list bb2); 565 566/* bb_compat */ 567extern errcode_t badblocks_list_create(badblocks_list *ret, int size); 568extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk); 569extern int badblocks_list_test(badblocks_list bb, blk_t blk); 570extern errcode_t badblocks_list_iterate_begin(badblocks_list bb, 571 badblocks_iterate *ret); 572extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk); 573extern void badblocks_list_iterate_end(badblocks_iterate iter); 574extern void badblocks_list_free(badblocks_list bb); 575 576/* bb_inode.c */ 577extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs, 578 ext2_badblocks_list bb_list); 579 580/* bitmaps.c */ 581extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs); 582extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs); 583extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs); 584extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs); 585extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start, 586 __u32 end, 587 __u32 real_end, 588 const char *descr, 589 ext2fs_generic_bitmap *ret); 590extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs, 591 const char *descr, 592 ext2fs_block_bitmap *ret); 593extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs, 594 const char *descr, 595 ext2fs_inode_bitmap *ret); 596extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap, 597 ino_t end, ino_t *oend); 598extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap, 599 blk_t end, blk_t *oend); 600extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap); 601extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap); 602extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs); 603extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs); 604 605/* block.c */ 606extern errcode_t ext2fs_block_iterate(ext2_filsys fs, 607 ino_t ino, 608 int flags, 609 char *block_buf, 610 int (*func)(ext2_filsys fs, 611 blk_t *blocknr, 612 int blockcnt, 613 void *priv_data), 614 void *priv_data); 615errcode_t ext2fs_block_iterate2(ext2_filsys fs, 616 ino_t ino, 617 int flags, 618 char *block_buf, 619 int (*func)(ext2_filsys fs, 620 blk_t *blocknr, 621 e2_blkcnt_t blockcnt, 622 blk_t ref_blk, 623 int ref_offset, 624 void *priv_data), 625 void *priv_data); 626 627/* bmap.c */ 628extern errcode_t ext2fs_bmap(ext2_filsys fs, ino_t ino, 629 struct ext2_inode *inode, 630 char *block_buf, int bmap_flags, 631 blk_t block, blk_t *phys_blk); 632 633 634#if 0 635/* bmove.c */ 636extern errcode_t ext2fs_move_blocks(ext2_filsys fs, 637 ext2fs_block_bitmap reserve, 638 ext2fs_block_bitmap alloc_map, 639 int flags); 640#endif 641 642/* check_desc.c */ 643extern errcode_t ext2fs_check_desc(ext2_filsys fs); 644 645/* closefs.c */ 646extern errcode_t ext2fs_close(ext2_filsys fs); 647extern errcode_t ext2fs_flush(ext2_filsys fs); 648extern int ext2fs_bg_has_super(ext2_filsys fs, int group_block); 649extern void ext2fs_update_dynamic_rev(ext2_filsys fs); 650 651/* cmp_bitmaps.c */ 652extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1, 653 ext2fs_block_bitmap bm2); 654extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1, 655 ext2fs_inode_bitmap bm2); 656 657/* dblist.c */ 658 659extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ino_t *ret_num_dirs); 660extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist); 661extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ino_t ino, 662 blk_t blk, int blockcnt); 663extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist, 664 int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info, 665 void *priv_data), 666 void *priv_data); 667extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ino_t ino, 668 blk_t blk, int blockcnt); 669extern errcode_t ext2fs_copy_dblist(ext2_dblist src, 670 ext2_dblist *dest); 671extern int ext2fs_dblist_count(ext2_dblist dblist); 672 673/* dblist_dir.c */ 674extern errcode_t 675 ext2fs_dblist_dir_iterate(ext2_dblist dblist, 676 int flags, 677 char *block_buf, 678 int (*func)(ino_t dir, 679 int entry, 680 struct ext2_dir_entry *dirent, 681 int offset, 682 int blocksize, 683 char *buf, 684 void *priv_data), 685 void *priv_data); 686 687/* dirblock.c */ 688extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block, 689 void *buf); 690extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block, 691 void *buf); 692 693/* dir_iterate.c */ 694extern errcode_t ext2fs_dir_iterate(ext2_filsys fs, 695 ino_t dir, 696 int flags, 697 char *block_buf, 698 int (*func)(struct ext2_dir_entry *dirent, 699 int offset, 700 int blocksize, 701 char *buf, 702 void *priv_data), 703 void *priv_data); 704 705/* dupfs.c */ 706extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest); 707 708/* expanddir.c */ 709extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ino_t dir); 710 711/* fileio.c */ 712extern errcode_t ext2fs_file_open(ext2_filsys fs, ino_t ino, 713 int flags, ext2_file_t *ret); 714extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file); 715extern errcode_t ext2fs_file_close(ext2_file_t file); 716extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf, 717 unsigned int wanted, unsigned int *got); 718extern errcode_t ext2fs_file_write(ext2_file_t file, void *buf, 719 unsigned int nbytes, unsigned int *written); 720extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset, 721 int whence, ext2_off_t *ret_pos); 722extern ext2_off_t ext2fs_file_get_size(ext2_file_t file); 723extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size); 724 725/* finddev.c */ 726extern char *ext2fs_find_block_device(dev_t device); 727 728/* freefs.c */ 729extern void ext2fs_free(ext2_filsys fs); 730extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap); 731extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap); 732extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap); 733extern void ext2fs_free_dblist(ext2_dblist dblist); 734extern void ext2fs_badblocks_list_free(badblocks_list bb); 735 736/* getsize.c */ 737extern errcode_t ext2fs_get_device_size(const char *file, int blocksize, 738 blk_t *retblocks); 739 740/* imager.c */ 741extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags); 742extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags); 743extern errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd, int flags); 744extern errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd, int flags); 745extern errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags); 746extern errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags); 747 748/* initialize.c */ 749extern errcode_t ext2fs_initialize(const char *name, int flags, 750 struct ext2_super_block *param, 751 io_manager manager, ext2_filsys *ret_fs); 752 753/* inode.c */ 754extern errcode_t ext2fs_flush_icache(ext2_filsys fs); 755extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks, 756 ext2_inode_scan *ret_scan); 757extern void ext2fs_close_inode_scan(ext2_inode_scan scan); 758extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ino_t *ino, 759 struct ext2_inode *inode); 760extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan, 761 int group); 762extern void ext2fs_set_inode_callback 763 (ext2_inode_scan scan, 764 errcode_t (*done_group)(ext2_filsys fs, 765 ext2_inode_scan scan, 766 dgrp_t group, 767 void * priv_data), 768 void *done_group_data); 769extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags, 770 int clear_flags); 771extern errcode_t ext2fs_read_inode (ext2_filsys fs, ino_t ino, 772 struct ext2_inode * inode); 773extern errcode_t ext2fs_write_inode(ext2_filsys fs, ino_t ino, 774 struct ext2_inode * inode); 775extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ino_t ino, blk_t *blocks); 776extern errcode_t ext2fs_check_directory(ext2_filsys fs, ino_t ino); 777 778/* icount.c */ 779extern void ext2fs_free_icount(ext2_icount_t icount); 780extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags, int size, 781 ext2_icount_t hint, ext2_icount_t *ret); 782extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags, int size, 783 ext2_icount_t *ret); 784extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ino_t ino, 785 __u16 *ret); 786extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ino_t ino, 787 __u16 *ret); 788extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ino_t ino, 789 __u16 *ret); 790extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ino_t ino, 791 __u16 count); 792extern ino_t ext2fs_get_icount_size(ext2_icount_t icount); 793errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *); 794 795/* ismounted.c */ 796extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags); 797 798/* namei.c */ 799extern errcode_t ext2fs_lookup(ext2_filsys fs, ino_t dir, const char *name, 800 int namelen, char *buf, ino_t *inode); 801extern errcode_t ext2fs_namei(ext2_filsys fs, ino_t root, ino_t cwd, 802 const char *name, ino_t *inode); 803errcode_t ext2fs_namei_follow(ext2_filsys fs, ino_t root, ino_t cwd, 804 const char *name, ino_t *inode); 805extern errcode_t ext2fs_follow_link(ext2_filsys fs, ino_t root, ino_t cwd, 806 ino_t inode, ino_t *res_inode); 807 808/* native.c */ 809int ext2fs_native_flag(void); 810 811/* newdir.c */ 812extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ino_t dir_ino, 813 ino_t parent_ino, char **block); 814 815/* mkdir.c */ 816extern errcode_t ext2fs_mkdir(ext2_filsys fs, ino_t parent, ino_t inum, 817 const char *name); 818 819/* mkjournal.c */ 820extern errcode_t ext2fs_add_journal_device(ext2_filsys fs, char *device, 821 blk_t size, int flags); 822extern errcode_t ext2fs_add_journal_fs(ext2_filsys fs, blk_t size, 823 int flags); 824 825/* openfs.c */ 826extern errcode_t ext2fs_open(const char *name, int flags, int superblock, 827 int block_size, io_manager manager, 828 ext2_filsys *ret_fs); 829 830/* get_pathname.c */ 831extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ino_t dir, ino_t ino, 832 char **name); 833 834/* link.c */ 835errcode_t ext2fs_link(ext2_filsys fs, ino_t dir, const char *name, 836 ino_t ino, int flags); 837errcode_t ext2fs_unlink(ext2_filsys fs, ino_t dir, const char *name, 838 ino_t ino, int flags); 839 840/* read_bb.c */ 841extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs, 842 ext2_badblocks_list *bb_list); 843 844/* read_bb_file.c */ 845extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f, 846 ext2_badblocks_list *bb_list, 847 void *private, 848 void (*invalid)(ext2_filsys fs, 849 blk_t blk, 850 char *badstr, 851 void *private)); 852extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f, 853 ext2_badblocks_list *bb_list, 854 void (*invalid)(ext2_filsys fs, 855 blk_t blk)); 856 857/* rs_bitmap.c */ 858extern errcode_t ext2fs_resize_generic_bitmap(__u32 new_end, 859 __u32 new_real_end, 860 ext2fs_generic_bitmap bmap); 861extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end, 862 ext2fs_inode_bitmap bmap); 863extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end, 864 ext2fs_block_bitmap bmap); 865extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src, 866 ext2fs_generic_bitmap *dest); 867 868/* swapfs.c */ 869extern void ext2fs_swap_super(struct ext2_super_block * super); 870extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp); 871extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t, 872 struct ext2_inode *f, int hostorder); 873 874/* valid_blk.c */ 875extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode); 876 877/* version.c */ 878extern int ext2fs_parse_version_string(const char *ver_string); 879extern int ext2fs_get_library_version(const char **ver_string, 880 const char **date_string); 881 882/* inline functions */ 883extern errcode_t ext2fs_get_mem(unsigned long size, void **ptr); 884extern errcode_t ext2fs_free_mem(void **ptr); 885extern errcode_t ext2fs_resize_mem(unsigned long old_size, 886 unsigned long size, void **ptr); 887extern void ext2fs_mark_super_dirty(ext2_filsys fs); 888extern void ext2fs_mark_changed(ext2_filsys fs); 889extern int ext2fs_test_changed(ext2_filsys fs); 890extern void ext2fs_mark_valid(ext2_filsys fs); 891extern void ext2fs_unmark_valid(ext2_filsys fs); 892extern int ext2fs_test_valid(ext2_filsys fs); 893extern void ext2fs_mark_ib_dirty(ext2_filsys fs); 894extern void ext2fs_mark_bb_dirty(ext2_filsys fs); 895extern int ext2fs_test_ib_dirty(ext2_filsys fs); 896extern int ext2fs_test_bb_dirty(ext2_filsys fs); 897extern int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk); 898extern int ext2fs_group_of_ino(ext2_filsys fs, ino_t ino); 899 900/* 901 * The actual inlined functions definitions themselves... 902 * 903 * If NO_INLINE_FUNCS is defined, then we won't try to do inline 904 * functions at all! 905 */ 906#if (defined(INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS)) 907#ifdef INCLUDE_INLINE_FUNCS 908#define _INLINE_ extern 909#else 910#ifdef __GNUC__ 911#define _INLINE_ extern __inline__ 912#else /* For Watcom C */ 913#define _INLINE_ extern inline 914#endif 915#endif 916 917#ifndef EXT2_CUSTOM_MEMORY_ROUTINES 918/* 919 * Allocate memory 920 */ 921_INLINE_ errcode_t ext2fs_get_mem(unsigned long size, void **ptr) 922{ 923 *ptr = malloc(size); 924 if (!*ptr) 925 return EXT2_ET_NO_MEMORY; 926 return 0; 927} 928 929/* 930 * Free memory 931 */ 932_INLINE_ errcode_t ext2fs_free_mem(void **ptr) 933{ 934 free(*ptr); 935 *ptr = 0; 936 return 0; 937} 938 939/* 940 * Resize memory 941 */ 942_INLINE_ errcode_t ext2fs_resize_mem(unsigned long old_size, 943 unsigned long size, void **ptr) 944{ 945 void *p; 946 947 p = realloc(*ptr, size); 948 if (!p) 949 return EXT2_ET_NO_MEMORY; 950 *ptr = p; 951 return 0; 952} 953#endif /* Custom memory routines */ 954 955/* 956 * Mark a filesystem superblock as dirty 957 */ 958_INLINE_ void ext2fs_mark_super_dirty(ext2_filsys fs) 959{ 960 fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_CHANGED; 961} 962 963/* 964 * Mark a filesystem as changed 965 */ 966_INLINE_ void ext2fs_mark_changed(ext2_filsys fs) 967{ 968 fs->flags |= EXT2_FLAG_CHANGED; 969} 970 971/* 972 * Check to see if a filesystem has changed 973 */ 974_INLINE_ int ext2fs_test_changed(ext2_filsys fs) 975{ 976 return (fs->flags & EXT2_FLAG_CHANGED); 977} 978 979/* 980 * Mark a filesystem as valid 981 */ 982_INLINE_ void ext2fs_mark_valid(ext2_filsys fs) 983{ 984 fs->flags |= EXT2_FLAG_VALID; 985} 986 987/* 988 * Mark a filesystem as NOT valid 989 */ 990_INLINE_ void ext2fs_unmark_valid(ext2_filsys fs) 991{ 992 fs->flags &= ~EXT2_FLAG_VALID; 993} 994 995/* 996 * Check to see if a filesystem is valid 997 */ 998_INLINE_ int ext2fs_test_valid(ext2_filsys fs) 999{ 1000 return (fs->flags & EXT2_FLAG_VALID); 1001} 1002 1003/* 1004 * Mark the inode bitmap as dirty 1005 */ 1006_INLINE_ void ext2fs_mark_ib_dirty(ext2_filsys fs) 1007{ 1008 fs->flags |= EXT2_FLAG_IB_DIRTY | EXT2_FLAG_CHANGED; 1009} 1010 1011/* 1012 * Mark the block bitmap as dirty 1013 */ 1014_INLINE_ void ext2fs_mark_bb_dirty(ext2_filsys fs) 1015{ 1016 fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_CHANGED; 1017} 1018 1019/* 1020 * Check to see if a filesystem's inode bitmap is dirty 1021 */ 1022_INLINE_ int ext2fs_test_ib_dirty(ext2_filsys fs) 1023{ 1024 return (fs->flags & EXT2_FLAG_IB_DIRTY); 1025} 1026 1027/* 1028 * Check to see if a filesystem's block bitmap is dirty 1029 */ 1030_INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs) 1031{ 1032 return (fs->flags & EXT2_FLAG_BB_DIRTY); 1033} 1034 1035/* 1036 * Return the group # of a block 1037 */ 1038_INLINE_ int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk) 1039{ 1040 return (blk - fs->super->s_first_data_block) / 1041 fs->super->s_blocks_per_group; 1042} 1043 1044/* 1045 * Return the group # of an inode number 1046 */ 1047_INLINE_ int ext2fs_group_of_ino(ext2_filsys fs, ino_t ino) 1048{ 1049 return (ino - 1) / fs->super->s_inodes_per_group; 1050} 1051#undef _INLINE_ 1052#endif 1053 1054#ifdef __cplusplus 1055} 1056#endif 1057 1058#endif /* _EXT2FS_EXT2FS_H */ 1059