ext2fs.h revision c180ac86533bcbfb1560bd4aa01464785a760f70
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 */ 163 164#define EXT2_FLAG_RW 0x01 165#define EXT2_FLAG_CHANGED 0x02 166#define EXT2_FLAG_DIRTY 0x04 167#define EXT2_FLAG_VALID 0x08 168#define EXT2_FLAG_IB_DIRTY 0x10 169#define EXT2_FLAG_BB_DIRTY 0x20 170#define EXT2_FLAG_SWAP_BYTES 0x40 171#define EXT2_FLAG_SWAP_BYTES_READ 0x80 172#define EXT2_FLAG_SWAP_BYTES_WRITE 0x100 173#define EXT2_FLAG_MASTER_SB_ONLY 0x200 174#define EXT2_FLAG_FORCE 0x400 175 176/* 177 * Special flag in the ext2 inode i_flag field that means that this is 178 * a new inode. (So that ext2_write_inode() can clear extra fields.) 179 */ 180#define EXT2_NEW_INODE_FL 0x80000000 181 182struct struct_ext2_filsys { 183 errcode_t magic; 184 io_channel io; 185 int flags; 186 char * device_name; 187 struct ext2_super_block * super; 188 int blocksize; 189 int fragsize; 190 dgrp_t group_desc_count; 191 unsigned long desc_blocks; 192 struct ext2_group_desc * group_desc; 193 int inode_blocks_per_group; 194 ext2fs_inode_bitmap inode_map; 195 ext2fs_block_bitmap block_map; 196 errcode_t (*get_blocks)(ext2_filsys fs, ino_t ino, blk_t *blocks); 197 errcode_t (*check_directory)(ext2_filsys fs, ino_t ino); 198 errcode_t (*write_bitmaps)(ext2_filsys fs); 199 errcode_t (*read_inode)(ext2_filsys fs, ino_t ino, 200 struct ext2_inode *inode); 201 errcode_t (*write_inode)(ext2_filsys fs, ino_t ino, 202 struct ext2_inode *inode); 203 badblocks_list badblocks; 204 ext2_dblist dblist; 205 __u32 stride; /* for mke2fs */ 206 struct ext2_super_block * orig_super; 207 /* 208 * Reserved for future expansion 209 */ 210 __u32 reserved[10]; 211 212 /* 213 * Reserved for the use of the calling application. 214 */ 215 void * priv_data; 216 217 /* 218 * Inode cache 219 */ 220 struct ext2_inode_cache *icache; 221}; 222 223#if EXT2_FLAT_INCLUDES 224#include "e2_bitops.h" 225#else 226#include "ext2fs/bitops.h" 227#endif 228 229/* 230 * Return flags for the block iterator functions 231 */ 232#define BLOCK_CHANGED 1 233#define BLOCK_ABORT 2 234#define BLOCK_ERROR 4 235 236/* 237 * Block interate flags 238 * 239 * BLOCK_FLAG_APPEND, or BLOCK_FLAG_HOLE, indicates that the interator 240 * function should be called on blocks where the block number is zero. 241 * This is used by ext2fs_expand_dir() to be able to add a new block 242 * to an inode. It can also be used for programs that want to be able 243 * to deal with files that contain "holes". 244 * 245 * BLOCK_FLAG_TRAVERSE indicates that the iterator function for the 246 * indirect, doubly indirect, etc. blocks should be called after all 247 * of the blocks containined in the indirect blocks are processed. 248 * This is useful if you are going to be deallocating blocks from an 249 * inode. 250 * 251 * BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be 252 * called for data blocks only. 253 * 254 * BLOCK_FLAG_NO_LARGE is for internal use only. It informs 255 * ext2fs_block_iterate2 that large files won't be accepted. 256 */ 257#define BLOCK_FLAG_APPEND 1 258#define BLOCK_FLAG_HOLE 1 259#define BLOCK_FLAG_DEPTH_TRAVERSE 2 260#define BLOCK_FLAG_DATA_ONLY 4 261 262#define BLOCK_FLAG_NO_LARGE 0x1000 263 264/* 265 * Magic "block count" return values for the block iterator function. 266 */ 267#define BLOCK_COUNT_IND (-1) 268#define BLOCK_COUNT_DIND (-2) 269#define BLOCK_COUNT_TIND (-3) 270#define BLOCK_COUNT_TRANSLATOR (-4) 271 272#if 0 273/* 274 * Flags for ext2fs_move_blocks 275 */ 276#define EXT2_BMOVE_GET_DBLIST 0x0001 277#define EXT2_BMOVE_DEBUG 0x0002 278#endif 279 280/* 281 * Return flags for the directory iterator functions 282 */ 283#define DIRENT_CHANGED 1 284#define DIRENT_ABORT 2 285#define DIRENT_ERROR 3 286 287/* 288 * Directory iterator flags 289 */ 290 291#define DIRENT_FLAG_INCLUDE_EMPTY 1 292 293 294#define DIRENT_DOT_FILE 1 295#define DIRENT_DOT_DOT_FILE 2 296#define DIRENT_OTHER_FILE 3 297 298/* 299 * Inode scan definitions 300 */ 301typedef struct ext2_struct_inode_scan *ext2_inode_scan; 302 303/* 304 * ext2fs_scan flags 305 */ 306#define EXT2_SF_CHK_BADBLOCKS 0x0001 307#define EXT2_SF_BAD_INODE_BLK 0x0002 308#define EXT2_SF_BAD_EXTRA_BYTES 0x0004 309#define EXT2_SF_SKIP_MISSING_ITABLE 0x0008 310 311/* 312 * ext2fs_check_if_mounted flags 313 */ 314#define EXT2_MF_MOUNTED 1 315#define EXT2_MF_ISROOT 2 316#define EXT2_MF_READONLY 4 317 318/* 319 * Ext2/linux mode flags. We define them here so that we don't need 320 * to depend on the OS's sys/stat.h, since we may be compiling on a 321 * non-Linux system. 322 */ 323#define LINUX_S_IFMT 00170000 324#define LINUX_S_IFSOCK 0140000 325#define LINUX_S_IFLNK 0120000 326#define LINUX_S_IFREG 0100000 327#define LINUX_S_IFBLK 0060000 328#define LINUX_S_IFDIR 0040000 329#define LINUX_S_IFCHR 0020000 330#define LINUX_S_IFIFO 0010000 331#define LINUX_S_ISUID 0004000 332#define LINUX_S_ISGID 0002000 333#define LINUX_S_ISVTX 0001000 334 335#define LINUX_S_IRWXU 00700 336#define LINUX_S_IRUSR 00400 337#define LINUX_S_IWUSR 00200 338#define LINUX_S_IXUSR 00100 339 340#define LINUX_S_IRWXG 00070 341#define LINUX_S_IRGRP 00040 342#define LINUX_S_IWGRP 00020 343#define LINUX_S_IXGRP 00010 344 345#define LINUX_S_IRWXO 00007 346#define LINUX_S_IROTH 00004 347#define LINUX_S_IWOTH 00002 348#define LINUX_S_IXOTH 00001 349 350#define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK) 351#define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG) 352#define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR) 353#define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR) 354#define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK) 355#define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO) 356#define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK) 357 358/* 359 * ext2_icount_t abstraction 360 */ 361#define EXT2_ICOUNT_OPT_INCREMENT 0x01 362 363typedef struct ext2_icount *ext2_icount_t; 364 365/* 366 * Flags for ext2fs_bmap 367 */ 368#define BMAP_ALLOC 1 369 370/* 371 * For checking structure magic numbers... 372 */ 373 374#define EXT2_CHECK_MAGIC(struct, code) \ 375 if ((struct)->magic != (code)) return (code) 376 377 378/* 379 * The ext2fs library private definition of the ext2 superblock, so we 380 * don't have to depend on the kernel's definition of the superblock, 381 * which might not have the latest features. 382 */ 383struct ext2fs_sb { 384 __u32 s_inodes_count; /* Inodes count */ 385 __u32 s_blocks_count; /* Blocks count */ 386 __u32 s_r_blocks_count; /* Reserved blocks count */ 387 __u32 s_free_blocks_count; /* Free blocks count */ 388 __u32 s_free_inodes_count; /* Free inodes count */ 389 __u32 s_first_data_block; /* First Data Block */ 390 __u32 s_log_block_size; /* Block size */ 391 __s32 s_log_frag_size; /* Fragment size */ 392 __u32 s_blocks_per_group; /* # Blocks per group */ 393 __u32 s_frags_per_group; /* # Fragments per group */ 394 __u32 s_inodes_per_group; /* # Inodes per group */ 395 __u32 s_mtime; /* Mount time */ 396 __u32 s_wtime; /* Write time */ 397 __u16 s_mnt_count; /* Mount count */ 398 __s16 s_max_mnt_count; /* Maximal mount count */ 399 __u16 s_magic; /* Magic signature */ 400 __u16 s_state; /* File system state */ 401 __u16 s_errors; /* Behaviour when detecting errors */ 402 __u16 s_minor_rev_level; /* minor revision level */ 403 __u32 s_lastcheck; /* time of last check */ 404 __u32 s_checkinterval; /* max. time between checks */ 405 __u32 s_creator_os; /* OS */ 406 __u32 s_rev_level; /* Revision level */ 407 __u16 s_def_resuid; /* Default uid for reserved blocks */ 408 __u16 s_def_resgid; /* Default gid for reserved blocks */ 409 /* 410 * These fields are for EXT2_DYNAMIC_REV superblocks only. 411 * 412 * Note: the difference between the compatible feature set and 413 * the incompatible feature set is that if there is a bit set 414 * in the incompatible feature set that the kernel doesn't 415 * know about, it should refuse to mount the filesystem. 416 * 417 * e2fsck's requirements are more strict; if it doesn't know 418 * about a feature in either the compatible or incompatible 419 * feature set, it must abort and not try to meddle with 420 * things it doesn't understand... 421 */ 422 __u32 s_first_ino; /* First non-reserved inode */ 423 __u16 s_inode_size; /* size of inode structure */ 424 __u16 s_block_group_nr; /* block group # of this superblock */ 425 __u32 s_feature_compat; /* compatible feature set */ 426 __u32 s_feature_incompat; /* incompatible feature set */ 427 __u32 s_feature_ro_compat; /* readonly-compatible feature set */ 428 __u8 s_uuid[16]; /* 128-bit uuid for volume */ 429 char s_volume_name[16]; /* volume name */ 430 char s_last_mounted[64]; /* directory where last mounted */ 431 __u32 s_algorithm_usage_bitmap; /* For compression */ 432 /* 433 * Performance hints. Directory preallocation should only 434 * happen if the EXT2_FEATURE_COMPAT_DIR_PREALLOC flag is on. 435 */ 436 __u8 s_prealloc_blocks; /* Nr of blocks to try to preallocate*/ 437 __u8 s_prealloc_dir_blocks; /* Nr to preallocate for dirs */ 438 __u16 s_padding1; 439 /* 440 * Journaling support. 441 */ 442 __u8 s_journal_uuid[16]; /* uuid of journal superblock */ 443 __u32 s_journal_inum; /* inode number of journal file */ 444 __u32 s_journal_dev; /* device number of journal file */ 445 __u32 s_last_orphan; /* start of list of inodes to delete */ 446 447 __u32 s_reserved[197]; /* Padding to the end of the block */ 448}; 449 450#define EXT2FS_COMPRESSED_BLKADDR ((blk_t) 0xffffffff) 451#define HOLE_BLKADDR(_b) ((_b) == 0 || (_b) == EXT2FS_COMPRESSED_BLKADDR) 452 453/* 454 * Feature set definitions (that might not be in ext2_fs.h 455 */ 456 457#ifndef EXT2_FEATURE_COMPAT_DIR_PREALLOC 458#define EXT2_FEATURE_COMPAT_DIR_PREALLOC 0x0001 459#endif 460 461#ifndef EXT2_FEATURE_COMPAT_IMAGIC_INODES /* for AFS, etc. */ 462#define EXT2_FEATURE_COMPAT_IMAGIC_INODES 0x0002 463#define EXT2_IMAGIC_FL 0x00002000 464#endif 465 466#ifndef EXT3_FEATURE_COMPAT_HAS_JOURNAL 467#define EXT3_FEATURE_COMPAT_HAS_JOURNAL 0x0004 468#endif 469 470#ifndef EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER 471#define EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER 0x0001 472#endif 473 474#ifndef EXT2_FEATURE_RO_COMPAT_LARGE_FILE 475#define EXT2_FEATURE_RO_COMPAT_LARGE_FILE 0x0002 476#define i_size_high i_dir_acl 477#endif 478 479#ifndef EXT2_FEATURE_RO_COMPAT_BTREE_DIR 480#define EXT2_FEATURE_RO_COMPAT_BTREE_DIR 0x0004 481#endif 482 483#ifndef EXT2_FEATURE_INCOMPAT_COMPRESSION 484#define EXT2_FEATURE_INCOMPAT_COMPRESSION 0x0001 485#endif 486 487#ifndef EXT2_FEATURE_INCOMPAT_FILETYPE 488#define EXT2_FEATURE_INCOMPAT_FILETYPE 0x0002 489#endif 490 491#ifndef EXT3_FEATURE_INCOMPAT_RECOVER 492#define EXT3_FEATURE_INCOMPAT_RECOVER 0x0004 /* Needs recovery */ 493#endif 494 495#define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\ 496 EXT2_FEATURE_COMPAT_IMAGIC_INODES|\ 497 EXT3_FEATURE_COMPAT_HAS_JOURNAL) 498/* This #ifdef is temporary until compression is fully supported */ 499#ifdef ENABLE_COMPRESSION 500#ifndef I_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL 501/* If the below warning bugs you, then have 502 `CPPFLAGS=-DI_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL' in your 503 environment at configure time. */ 504#warning "Compression support is experimental" 505#endif 506#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 507 EXT2_FEATURE_INCOMPAT_COMPRESSION|\ 508 EXT3_FEATURE_INCOMPAT_RECOVER) 509#else 510#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 511 EXT3_FEATURE_INCOMPAT_RECOVER) 512#endif 513#define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\ 514 EXT2_FEATURE_RO_COMPAT_LARGE_FILE) 515/* 516 * function prototypes 517 */ 518 519/* alloc.c */ 520extern errcode_t ext2fs_new_inode(ext2_filsys fs, ino_t dir, int mode, 521 ext2fs_inode_bitmap map, ino_t *ret); 522extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal, 523 ext2fs_block_bitmap map, blk_t *ret); 524extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start, 525 blk_t finish, int num, 526 ext2fs_block_bitmap map, 527 blk_t *ret); 528extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal, 529 char *block_buf, blk_t *ret); 530 531/* alloc_tables.c */ 532extern errcode_t ext2fs_allocate_tables(ext2_filsys fs); 533extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group, 534 ext2fs_block_bitmap bmap); 535 536/* badblocks.c */ 537extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret, 538 int size); 539extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb, 540 blk_t blk); 541extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb, 542 blk_t blk); 543extern errcode_t 544 ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb, 545 ext2_badblocks_iterate *ret); 546extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter, 547 blk_t *blk); 548extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter); 549extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src, 550 ext2_badblocks_list *dest); 551extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1, 552 ext2_badblocks_list bb2); 553 554/* bb_compat */ 555extern errcode_t badblocks_list_create(badblocks_list *ret, int size); 556extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk); 557extern int badblocks_list_test(badblocks_list bb, blk_t blk); 558extern errcode_t badblocks_list_iterate_begin(badblocks_list bb, 559 badblocks_iterate *ret); 560extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk); 561extern void badblocks_list_iterate_end(badblocks_iterate iter); 562extern void badblocks_list_free(badblocks_list bb); 563 564/* bb_inode.c */ 565extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs, 566 ext2_badblocks_list bb_list); 567 568/* bitmaps.c */ 569extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs); 570extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs); 571extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs); 572extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs); 573extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start, 574 __u32 end, 575 __u32 real_end, 576 const char *descr, 577 ext2fs_generic_bitmap *ret); 578extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs, 579 const char *descr, 580 ext2fs_block_bitmap *ret); 581extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs, 582 const char *descr, 583 ext2fs_inode_bitmap *ret); 584extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap, 585 ino_t end, ino_t *oend); 586extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap, 587 blk_t end, blk_t *oend); 588extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap); 589extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap); 590extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs); 591extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs); 592 593/* block.c */ 594extern errcode_t ext2fs_block_iterate(ext2_filsys fs, 595 ino_t ino, 596 int flags, 597 char *block_buf, 598 int (*func)(ext2_filsys fs, 599 blk_t *blocknr, 600 int blockcnt, 601 void *priv_data), 602 void *priv_data); 603errcode_t ext2fs_block_iterate2(ext2_filsys fs, 604 ino_t ino, 605 int flags, 606 char *block_buf, 607 int (*func)(ext2_filsys fs, 608 blk_t *blocknr, 609 e2_blkcnt_t blockcnt, 610 blk_t ref_blk, 611 int ref_offset, 612 void *priv_data), 613 void *priv_data); 614 615/* bmap.c */ 616extern errcode_t ext2fs_bmap(ext2_filsys fs, ino_t ino, 617 struct ext2_inode *inode, 618 char *block_buf, int bmap_flags, 619 blk_t block, blk_t *phys_blk); 620 621 622#if 0 623/* bmove.c */ 624extern errcode_t ext2fs_move_blocks(ext2_filsys fs, 625 ext2fs_block_bitmap reserve, 626 ext2fs_block_bitmap alloc_map, 627 int flags); 628#endif 629 630/* check_desc.c */ 631extern errcode_t ext2fs_check_desc(ext2_filsys fs); 632 633/* closefs.c */ 634extern errcode_t ext2fs_close(ext2_filsys fs); 635extern errcode_t ext2fs_flush(ext2_filsys fs); 636extern int ext2fs_bg_has_super(ext2_filsys fs, int group_block); 637 638/* cmp_bitmaps.c */ 639extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1, 640 ext2fs_block_bitmap bm2); 641extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1, 642 ext2fs_inode_bitmap bm2); 643 644/* dblist.c */ 645 646extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ino_t *ret_num_dirs); 647extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist); 648extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ino_t ino, 649 blk_t blk, int blockcnt); 650extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist, 651 int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info, 652 void *priv_data), 653 void *priv_data); 654extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ino_t ino, 655 blk_t blk, int blockcnt); 656extern errcode_t ext2fs_copy_dblist(ext2_dblist src, 657 ext2_dblist *dest); 658extern int ext2fs_dblist_count(ext2_dblist dblist); 659 660/* dblist_dir.c */ 661extern errcode_t 662 ext2fs_dblist_dir_iterate(ext2_dblist dblist, 663 int flags, 664 char *block_buf, 665 int (*func)(ino_t dir, 666 int entry, 667 struct ext2_dir_entry *dirent, 668 int offset, 669 int blocksize, 670 char *buf, 671 void *priv_data), 672 void *priv_data); 673 674/* dirblock.c */ 675extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block, 676 void *buf); 677extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block, 678 void *buf); 679 680/* dir_iterate.c */ 681extern errcode_t ext2fs_dir_iterate(ext2_filsys fs, 682 ino_t dir, 683 int flags, 684 char *block_buf, 685 int (*func)(struct ext2_dir_entry *dirent, 686 int offset, 687 int blocksize, 688 char *buf, 689 void *priv_data), 690 void *priv_data); 691 692/* dupfs.c */ 693extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest); 694 695/* expanddir.c */ 696extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ino_t dir); 697 698/* fileio.c */ 699extern errcode_t ext2fs_file_open(ext2_filsys fs, ino_t ino, 700 int flags, ext2_file_t *ret); 701extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file); 702extern errcode_t ext2fs_file_close(ext2_file_t file); 703extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf, 704 unsigned int wanted, unsigned int *got); 705extern errcode_t ext2fs_file_write(ext2_file_t file, void *buf, 706 unsigned int nbytes, unsigned int *written); 707extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset, 708 int whence, ext2_off_t *ret_pos); 709extern ext2_off_t ext2fs_file_get_size(ext2_file_t file); 710extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size); 711 712/* finddev.c */ 713extern char *ext2fs_find_block_device(dev_t device); 714 715/* freefs.c */ 716extern void ext2fs_free(ext2_filsys fs); 717extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap); 718extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap); 719extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap); 720extern void ext2fs_free_dblist(ext2_dblist dblist); 721extern void ext2fs_badblocks_list_free(badblocks_list bb); 722 723/* getsize.c */ 724extern errcode_t ext2fs_get_device_size(const char *file, int blocksize, 725 blk_t *retblocks); 726 727/* initialize.c */ 728extern errcode_t ext2fs_initialize(const char *name, int flags, 729 struct ext2_super_block *param, 730 io_manager manager, ext2_filsys *ret_fs); 731 732/* inode.c */ 733extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks, 734 ext2_inode_scan *ret_scan); 735extern void ext2fs_close_inode_scan(ext2_inode_scan scan); 736extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ino_t *ino, 737 struct ext2_inode *inode); 738extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan, 739 int group); 740extern void ext2fs_set_inode_callback 741 (ext2_inode_scan scan, 742 errcode_t (*done_group)(ext2_filsys fs, 743 ext2_inode_scan scan, 744 dgrp_t group, 745 void * priv_data), 746 void *done_group_data); 747extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags, 748 int clear_flags); 749extern errcode_t ext2fs_read_inode (ext2_filsys fs, ino_t ino, 750 struct ext2_inode * inode); 751extern errcode_t ext2fs_write_inode(ext2_filsys fs, ino_t ino, 752 struct ext2_inode * inode); 753extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ino_t ino, blk_t *blocks); 754extern errcode_t ext2fs_check_directory(ext2_filsys fs, ino_t ino); 755 756/* icount.c */ 757extern void ext2fs_free_icount(ext2_icount_t icount); 758extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags, int size, 759 ext2_icount_t hint, ext2_icount_t *ret); 760extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags, int size, 761 ext2_icount_t *ret); 762extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ino_t ino, 763 __u16 *ret); 764extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ino_t ino, 765 __u16 *ret); 766extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ino_t ino, 767 __u16 *ret); 768extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ino_t ino, 769 __u16 count); 770extern ino_t ext2fs_get_icount_size(ext2_icount_t icount); 771errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *); 772 773/* ismounted.c */ 774extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags); 775 776/* namei.c */ 777extern errcode_t ext2fs_lookup(ext2_filsys fs, ino_t dir, const char *name, 778 int namelen, char *buf, ino_t *inode); 779extern errcode_t ext2fs_namei(ext2_filsys fs, ino_t root, ino_t cwd, 780 const char *name, ino_t *inode); 781errcode_t ext2fs_namei_follow(ext2_filsys fs, ino_t root, ino_t cwd, 782 const char *name, ino_t *inode); 783extern errcode_t ext2fs_follow_link(ext2_filsys fs, ino_t root, ino_t cwd, 784 ino_t inode, ino_t *res_inode); 785 786/* native.c */ 787int ext2fs_native_flag(void); 788 789/* newdir.c */ 790extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ino_t dir_ino, 791 ino_t parent_ino, char **block); 792 793/* mkdir.c */ 794extern errcode_t ext2fs_mkdir(ext2_filsys fs, ino_t parent, ino_t inum, 795 const char *name); 796 797/* mkjournal.c */ 798extern errcode_t ext2fs_add_journal_device(ext2_filsys fs, char *device, 799 blk_t size); 800extern errcode_t ext2fs_add_journal_fs(ext2_filsys fs, blk_t size); 801 802/* openfs.c */ 803extern errcode_t ext2fs_open(const char *name, int flags, int superblock, 804 int block_size, io_manager manager, 805 ext2_filsys *ret_fs); 806 807/* get_pathname.c */ 808extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ino_t dir, ino_t ino, 809 char **name); 810 811/* link.c */ 812errcode_t ext2fs_link(ext2_filsys fs, ino_t dir, const char *name, 813 ino_t ino, int flags); 814errcode_t ext2fs_unlink(ext2_filsys fs, ino_t dir, const char *name, 815 ino_t ino, int flags); 816 817/* read_bb.c */ 818extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs, 819 ext2_badblocks_list *bb_list); 820 821/* read_bb_file.c */ 822extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f, 823 ext2_badblocks_list *bb_list, 824 void *private, 825 void (*invalid)(ext2_filsys fs, 826 blk_t blk, 827 char *badstr, 828 void *private)); 829extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f, 830 ext2_badblocks_list *bb_list, 831 void (*invalid)(ext2_filsys fs, 832 blk_t blk)); 833 834/* rs_bitmap.c */ 835extern errcode_t ext2fs_resize_generic_bitmap(__u32 new_end, 836 __u32 new_real_end, 837 ext2fs_generic_bitmap bmap); 838extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end, 839 ext2fs_inode_bitmap bmap); 840extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end, 841 ext2fs_block_bitmap bmap); 842extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src, 843 ext2fs_generic_bitmap *dest); 844 845/* swapfs.c */ 846extern void ext2fs_swap_super(struct ext2_super_block * super); 847extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp); 848extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t, 849 struct ext2_inode *f, int hostorder); 850 851/* valid_blk.c */ 852extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode); 853 854/* version.c */ 855extern int ext2fs_parse_version_string(const char *ver_string); 856extern int ext2fs_get_library_version(const char **ver_string, 857 const char **date_string); 858 859/* inline functions */ 860extern errcode_t ext2fs_get_mem(unsigned long size, void **ptr); 861extern errcode_t ext2fs_free_mem(void **ptr); 862extern errcode_t ext2fs_resize_mem(unsigned long old_size, 863 unsigned long size, void **ptr); 864extern void ext2fs_mark_super_dirty(ext2_filsys fs); 865extern void ext2fs_mark_changed(ext2_filsys fs); 866extern int ext2fs_test_changed(ext2_filsys fs); 867extern void ext2fs_mark_valid(ext2_filsys fs); 868extern void ext2fs_unmark_valid(ext2_filsys fs); 869extern int ext2fs_test_valid(ext2_filsys fs); 870extern void ext2fs_mark_ib_dirty(ext2_filsys fs); 871extern void ext2fs_mark_bb_dirty(ext2_filsys fs); 872extern int ext2fs_test_ib_dirty(ext2_filsys fs); 873extern int ext2fs_test_bb_dirty(ext2_filsys fs); 874extern int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk); 875extern int ext2fs_group_of_ino(ext2_filsys fs, ino_t ino); 876 877/* 878 * The actual inlined functions definitions themselves... 879 * 880 * If NO_INLINE_FUNCS is defined, then we won't try to do inline 881 * functions at all! 882 */ 883#if (defined(INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS)) 884#ifdef INCLUDE_INLINE_FUNCS 885#define _INLINE_ extern 886#else 887#ifdef __GNUC__ 888#define _INLINE_ extern __inline__ 889#else /* For Watcom C */ 890#define _INLINE_ extern inline 891#endif 892#endif 893 894#ifndef EXT2_CUSTOM_MEMORY_ROUTINES 895/* 896 * Allocate memory 897 */ 898_INLINE_ errcode_t ext2fs_get_mem(unsigned long size, void **ptr) 899{ 900 *ptr = malloc(size); 901 if (!*ptr) 902 return EXT2_ET_NO_MEMORY; 903 return 0; 904} 905 906/* 907 * Free memory 908 */ 909_INLINE_ errcode_t ext2fs_free_mem(void **ptr) 910{ 911 free(*ptr); 912 *ptr = 0; 913 return 0; 914} 915 916/* 917 * Resize memory 918 */ 919_INLINE_ errcode_t ext2fs_resize_mem(unsigned long old_size, 920 unsigned long size, void **ptr) 921{ 922 void *p; 923 924 p = realloc(*ptr, size); 925 if (!p) 926 return EXT2_ET_NO_MEMORY; 927 *ptr = p; 928 return 0; 929} 930#endif /* Custom memory routines */ 931 932/* 933 * Mark a filesystem superblock as dirty 934 */ 935_INLINE_ void ext2fs_mark_super_dirty(ext2_filsys fs) 936{ 937 fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_CHANGED; 938} 939 940/* 941 * Mark a filesystem as changed 942 */ 943_INLINE_ void ext2fs_mark_changed(ext2_filsys fs) 944{ 945 fs->flags |= EXT2_FLAG_CHANGED; 946} 947 948/* 949 * Check to see if a filesystem has changed 950 */ 951_INLINE_ int ext2fs_test_changed(ext2_filsys fs) 952{ 953 return (fs->flags & EXT2_FLAG_CHANGED); 954} 955 956/* 957 * Mark a filesystem as valid 958 */ 959_INLINE_ void ext2fs_mark_valid(ext2_filsys fs) 960{ 961 fs->flags |= EXT2_FLAG_VALID; 962} 963 964/* 965 * Mark a filesystem as NOT valid 966 */ 967_INLINE_ void ext2fs_unmark_valid(ext2_filsys fs) 968{ 969 fs->flags &= ~EXT2_FLAG_VALID; 970} 971 972/* 973 * Check to see if a filesystem is valid 974 */ 975_INLINE_ int ext2fs_test_valid(ext2_filsys fs) 976{ 977 return (fs->flags & EXT2_FLAG_VALID); 978} 979 980/* 981 * Mark the inode bitmap as dirty 982 */ 983_INLINE_ void ext2fs_mark_ib_dirty(ext2_filsys fs) 984{ 985 fs->flags |= EXT2_FLAG_IB_DIRTY | EXT2_FLAG_CHANGED; 986} 987 988/* 989 * Mark the block bitmap as dirty 990 */ 991_INLINE_ void ext2fs_mark_bb_dirty(ext2_filsys fs) 992{ 993 fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_CHANGED; 994} 995 996/* 997 * Check to see if a filesystem's inode bitmap is dirty 998 */ 999_INLINE_ int ext2fs_test_ib_dirty(ext2_filsys fs) 1000{ 1001 return (fs->flags & EXT2_FLAG_IB_DIRTY); 1002} 1003 1004/* 1005 * Check to see if a filesystem's block bitmap is dirty 1006 */ 1007_INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs) 1008{ 1009 return (fs->flags & EXT2_FLAG_BB_DIRTY); 1010} 1011 1012/* 1013 * Return the group # of a block 1014 */ 1015_INLINE_ int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk) 1016{ 1017 return (blk - fs->super->s_first_data_block) / 1018 fs->super->s_blocks_per_group; 1019} 1020 1021/* 1022 * Return the group # of an inode number 1023 */ 1024_INLINE_ int ext2fs_group_of_ino(ext2_filsys fs, ino_t ino) 1025{ 1026 return (ino - 1) / fs->super->s_inodes_per_group; 1027} 1028#undef _INLINE_ 1029#endif 1030 1031#ifdef __cplusplus 1032} 1033#endif 1034 1035#endif /* _EXT2FS_EXT2FS_H */ 1036