ext2fs.h revision 69365c689b7164014e539b40ef62fc8eb804a05c
1/* 2 * ext2fs.h --- ext2fs 3 * 4 * Copyright (C) 1993, 1994, 1995, 1996 Theodore Ts'o. 5 * 6 * %Begin-Header% 7 * This file may be redistributed under the terms of the GNU Public 8 * License. 9 * %End-Header% 10 */ 11 12#ifndef _EXT2FS_EXT2FS_H 13#define _EXT2FS_EXT2FS_H 14 15#ifdef __GNUC__ 16#define EXT2FS_ATTR(x) __attribute__(x) 17#else 18#define EXT2FS_ATTR(x) 19#endif 20 21#ifdef __cplusplus 22extern "C" { 23#endif 24 25/* 26 * Non-GNU C compilers won't necessarily understand inline 27 */ 28#if (!defined(__GNUC__) && !defined(__WATCOMC__)) 29#define NO_INLINE_FUNCS 30#endif 31 32/* 33 * Where the master copy of the superblock is located, and how big 34 * superblocks are supposed to be. We define SUPERBLOCK_SIZE because 35 * the size of the superblock structure is not necessarily trustworthy 36 * (some versions have the padding set up so that the superblock is 37 * 1032 bytes long). 38 */ 39#define SUPERBLOCK_OFFSET 1024 40#define SUPERBLOCK_SIZE 1024 41 42/* 43 * The last ext2fs revision level that this version of the library is 44 * able to support. 45 */ 46#define EXT2_LIB_CURRENT_REV EXT2_DYNAMIC_REV 47 48#ifdef HAVE_SYS_TYPES_H 49#include <sys/types.h> 50#endif 51 52#include <stdio.h> 53#include <stdlib.h> 54#include <string.h> 55 56#if EXT2_FLAT_INCLUDES 57#include "e2_types.h" 58#include "ext2_fs.h" 59#include "ext3_extents.h" 60#else 61#include <ext2fs/ext2_types.h> 62#include <ext2fs/ext2_fs.h> 63#include <ext2fs/ext3_extents.h> 64#endif /* EXT2_FLAT_INCLUDES */ 65 66typedef __u32 ext2_ino_t; 67typedef __u32 blk_t; 68typedef __u64 blk64_t; 69typedef __u32 dgrp_t; 70typedef __u32 ext2_off_t; 71typedef __u64 ext2_off64_t; 72typedef __s64 e2_blkcnt_t; 73typedef __u32 ext2_dirhash_t; 74 75#if EXT2_FLAT_INCLUDES 76#include "com_err.h" 77#include "ext2_io.h" 78#include "ext2_err.h" 79#include "ext2_ext_attr.h" 80#else 81#include <et/com_err.h> 82#include <ext2fs/ext2_io.h> 83#include <ext2fs/ext2_err.h> 84#include <ext2fs/ext2_ext_attr.h> 85#endif 86 87/* 88 * Portability help for Microsoft Visual C++ 89 */ 90#ifdef _MSC_VER 91#define EXT2_QSORT_TYPE int __cdecl 92#else 93#define EXT2_QSORT_TYPE int 94#endif 95 96typedef struct struct_ext2_filsys *ext2_filsys; 97 98#define EXT2FS_MARK_ERROR 0 99#define EXT2FS_UNMARK_ERROR 1 100#define EXT2FS_TEST_ERROR 2 101 102typedef struct ext2fs_struct_generic_bitmap *ext2fs_generic_bitmap; 103typedef struct ext2fs_struct_generic_bitmap *ext2fs_inode_bitmap; 104typedef struct ext2fs_struct_generic_bitmap *ext2fs_block_bitmap; 105 106#define EXT2_FIRST_INODE(s) EXT2_FIRST_INO(s) 107 108 109/* 110 * Badblocks list definitions 111 */ 112 113typedef struct ext2_struct_u32_list *ext2_badblocks_list; 114typedef struct ext2_struct_u32_iterate *ext2_badblocks_iterate; 115 116typedef struct ext2_struct_u32_list *ext2_u32_list; 117typedef struct ext2_struct_u32_iterate *ext2_u32_iterate; 118 119/* old */ 120typedef struct ext2_struct_u32_list *badblocks_list; 121typedef struct ext2_struct_u32_iterate *badblocks_iterate; 122 123#define BADBLOCKS_FLAG_DIRTY 1 124 125/* 126 * ext2_dblist structure and abstractions (see dblist.c) 127 */ 128struct ext2_db_entry { 129 ext2_ino_t ino; 130 blk_t blk; 131 int blockcnt; 132}; 133 134typedef struct ext2_struct_dblist *ext2_dblist; 135 136#define DBLIST_ABORT 1 137 138/* 139 * ext2_fileio definitions 140 */ 141 142#define EXT2_FILE_WRITE 0x0001 143#define EXT2_FILE_CREATE 0x0002 144 145#define EXT2_FILE_MASK 0x00FF 146 147#define EXT2_FILE_BUF_DIRTY 0x4000 148#define EXT2_FILE_BUF_VALID 0x2000 149 150typedef struct ext2_file *ext2_file_t; 151 152#define EXT2_SEEK_SET 0 153#define EXT2_SEEK_CUR 1 154#define EXT2_SEEK_END 2 155 156/* 157 * Flags for the ext2_filsys structure and for ext2fs_open() 158 */ 159#define EXT2_FLAG_RW 0x01 160#define EXT2_FLAG_CHANGED 0x02 161#define EXT2_FLAG_DIRTY 0x04 162#define EXT2_FLAG_VALID 0x08 163#define EXT2_FLAG_IB_DIRTY 0x10 164#define EXT2_FLAG_BB_DIRTY 0x20 165#define EXT2_FLAG_SWAP_BYTES 0x40 166#define EXT2_FLAG_SWAP_BYTES_READ 0x80 167#define EXT2_FLAG_SWAP_BYTES_WRITE 0x100 168#define EXT2_FLAG_MASTER_SB_ONLY 0x200 169#define EXT2_FLAG_FORCE 0x400 170#define EXT2_FLAG_SUPER_ONLY 0x800 171#define EXT2_FLAG_JOURNAL_DEV_OK 0x1000 172#define EXT2_FLAG_IMAGE_FILE 0x2000 173#define EXT2_FLAG_EXCLUSIVE 0x4000 174#define EXT2_FLAG_SOFTSUPP_FEATURES 0x8000 175#define EXT2_FLAG_NOFREE_ON_ERROR 0x10000 176#define EXT2_FLAG_64BITS 0x20000 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 unsigned 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 ext2_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 time_t now; 219 /* 220 * Reserved for future expansion 221 */ 222 __u32 reserved[7]; 223 224 /* 225 * Reserved for the use of the calling application. 226 */ 227 void * priv_data; 228 229 /* 230 * Inode cache 231 */ 232 struct ext2_inode_cache *icache; 233 io_channel image_io; 234 235 /* 236 * More callback functions 237 */ 238 errcode_t (*get_alloc_block)(ext2_filsys fs, blk64_t goal, 239 blk64_t *ret); 240 void (*block_alloc_stats)(ext2_filsys fs, blk64_t blk, int inuse); 241}; 242 243#if EXT2_FLAT_INCLUDES 244#include "e2_bitops.h" 245#else 246#include <ext2fs/bitops.h> 247#endif 248 249/* 250 * Return flags for the block iterator functions 251 */ 252#define BLOCK_CHANGED 1 253#define BLOCK_ABORT 2 254#define BLOCK_ERROR 4 255 256/* 257 * Block interate flags 258 * 259 * BLOCK_FLAG_APPEND, or BLOCK_FLAG_HOLE, indicates that the interator 260 * function should be called on blocks where the block number is zero. 261 * This is used by ext2fs_expand_dir() to be able to add a new block 262 * to an inode. It can also be used for programs that want to be able 263 * to deal with files that contain "holes". 264 * 265 * BLOCK_FLAG_DEPTH_TRAVERSE indicates that the iterator function for 266 * the indirect, doubly indirect, etc. blocks should be called after 267 * all of the blocks containined in the indirect blocks are processed. 268 * This is useful if you are going to be deallocating blocks from an 269 * inode. 270 * 271 * BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be 272 * called for data blocks only. 273 * 274 * BLOCK_FLAG_READ_ONLY is a promise by the caller that it will not 275 * modify returned block number. 276 * 277 * BLOCK_FLAG_NO_LARGE is for internal use only. It informs 278 * ext2fs_block_iterate2 that large files won't be accepted. 279 */ 280#define BLOCK_FLAG_APPEND 1 281#define BLOCK_FLAG_HOLE 1 282#define BLOCK_FLAG_DEPTH_TRAVERSE 2 283#define BLOCK_FLAG_DATA_ONLY 4 284#define BLOCK_FLAG_READ_ONLY 8 285 286#define BLOCK_FLAG_NO_LARGE 0x1000 287 288/* 289 * Magic "block count" return values for the block iterator function. 290 */ 291#define BLOCK_COUNT_IND (-1) 292#define BLOCK_COUNT_DIND (-2) 293#define BLOCK_COUNT_TIND (-3) 294#define BLOCK_COUNT_TRANSLATOR (-4) 295 296#if 0 297/* 298 * Flags for ext2fs_move_blocks 299 */ 300#define EXT2_BMOVE_GET_DBLIST 0x0001 301#define EXT2_BMOVE_DEBUG 0x0002 302#endif 303 304/* 305 * Generic (non-filesystem layout specific) extents structure 306 */ 307 308#define EXT2_EXTENT_FLAGS_LEAF 0x0001 309#define EXT2_EXTENT_FLAGS_UNINIT 0x0002 310#define EXT2_EXTENT_FLAGS_SECOND_VISIT 0x0004 311 312struct ext2fs_extent { 313 blk64_t e_pblk; /* first physical block */ 314 blk64_t e_lblk; /* first logical block extent covers */ 315 __u32 e_len; /* number of blocks covered by extent */ 316 __u32 e_flags; /* extent flags */ 317}; 318 319typedef struct ext2_extent_handle *ext2_extent_handle_t; 320typedef struct ext2_extent_path *ext2_extent_path_t; 321 322/* 323 * Flags used by ext2fs_extent_get() 324 */ 325#define EXT2_EXTENT_CURRENT 0x0000 326#define EXT2_EXTENT_MOVE_MASK 0x000F 327#define EXT2_EXTENT_ROOT 0x0001 328#define EXT2_EXTENT_LAST_LEAF 0x0002 329#define EXT2_EXTENT_FIRST_SIB 0x0003 330#define EXT2_EXTENT_LAST_SIB 0x0004 331#define EXT2_EXTENT_NEXT_SIB 0x0005 332#define EXT2_EXTENT_PREV_SIB 0x0006 333#define EXT2_EXTENT_NEXT_LEAF 0x0007 334#define EXT2_EXTENT_PREV_LEAF 0x0008 335#define EXT2_EXTENT_NEXT 0x0009 336#define EXT2_EXTENT_PREV 0x000A 337#define EXT2_EXTENT_UP 0x000B 338#define EXT2_EXTENT_DOWN 0x000C 339#define EXT2_EXTENT_DOWN_AND_LAST 0x000D 340 341/* 342 * Flags used by ext2fs_extent_insert() 343 */ 344#define EXT2_EXTENT_INSERT_AFTER 0x0001 /* insert after handle loc'n */ 345#define EXT2_EXTENT_INSERT_NOSPLIT 0x0002 /* insert may not cause split */ 346 347/* 348 * Flags used by ext2fs_extent_delete() 349 */ 350#define EXT2_EXTENT_DELETE_KEEP_EMPTY 0x001 /* keep node if last extnt gone */ 351 352/* 353 * Flags used by ext2fs_extent_set_bmap() 354 */ 355#define EXT2_EXTENT_SET_BMAP_UNINIT 0x0001 356 357/* 358 * Data structure returned by ext2fs_extent_get_info() 359 */ 360struct ext2_extent_info { 361 int curr_entry; 362 int curr_level; 363 int num_entries; 364 int max_entries; 365 int max_depth; 366 int bytes_avail; 367 blk64_t max_lblk; 368 blk64_t max_pblk; 369 __u32 max_len; 370 __u32 max_uninit_len; 371}; 372 373/* 374 * Flags for directory block reading and writing functions 375 */ 376#define EXT2_DIRBLOCK_V2_STRUCT 0x0001 377 378/* 379 * Return flags for the directory iterator functions 380 */ 381#define DIRENT_CHANGED 1 382#define DIRENT_ABORT 2 383#define DIRENT_ERROR 3 384 385/* 386 * Directory iterator flags 387 */ 388 389#define DIRENT_FLAG_INCLUDE_EMPTY 1 390#define DIRENT_FLAG_INCLUDE_REMOVED 2 391 392#define DIRENT_DOT_FILE 1 393#define DIRENT_DOT_DOT_FILE 2 394#define DIRENT_OTHER_FILE 3 395#define DIRENT_DELETED_FILE 4 396 397/* 398 * Inode scan definitions 399 */ 400typedef struct ext2_struct_inode_scan *ext2_inode_scan; 401 402/* 403 * ext2fs_scan flags 404 */ 405#define EXT2_SF_CHK_BADBLOCKS 0x0001 406#define EXT2_SF_BAD_INODE_BLK 0x0002 407#define EXT2_SF_BAD_EXTRA_BYTES 0x0004 408#define EXT2_SF_SKIP_MISSING_ITABLE 0x0008 409#define EXT2_SF_DO_LAZY 0x0010 410 411/* 412 * ext2fs_check_if_mounted flags 413 */ 414#define EXT2_MF_MOUNTED 1 415#define EXT2_MF_ISROOT 2 416#define EXT2_MF_READONLY 4 417#define EXT2_MF_SWAP 8 418#define EXT2_MF_BUSY 16 419 420/* 421 * Ext2/linux mode flags. We define them here so that we don't need 422 * to depend on the OS's sys/stat.h, since we may be compiling on a 423 * non-Linux system. 424 */ 425#define LINUX_S_IFMT 00170000 426#define LINUX_S_IFSOCK 0140000 427#define LINUX_S_IFLNK 0120000 428#define LINUX_S_IFREG 0100000 429#define LINUX_S_IFBLK 0060000 430#define LINUX_S_IFDIR 0040000 431#define LINUX_S_IFCHR 0020000 432#define LINUX_S_IFIFO 0010000 433#define LINUX_S_ISUID 0004000 434#define LINUX_S_ISGID 0002000 435#define LINUX_S_ISVTX 0001000 436 437#define LINUX_S_IRWXU 00700 438#define LINUX_S_IRUSR 00400 439#define LINUX_S_IWUSR 00200 440#define LINUX_S_IXUSR 00100 441 442#define LINUX_S_IRWXG 00070 443#define LINUX_S_IRGRP 00040 444#define LINUX_S_IWGRP 00020 445#define LINUX_S_IXGRP 00010 446 447#define LINUX_S_IRWXO 00007 448#define LINUX_S_IROTH 00004 449#define LINUX_S_IWOTH 00002 450#define LINUX_S_IXOTH 00001 451 452#define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK) 453#define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG) 454#define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR) 455#define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR) 456#define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK) 457#define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO) 458#define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK) 459 460/* 461 * ext2 size of an inode 462 */ 463#define EXT2_I_SIZE(i) ((i)->i_size | ((__u64) (i)->i_size_high << 32)) 464 465/* 466 * ext2_icount_t abstraction 467 */ 468#define EXT2_ICOUNT_OPT_INCREMENT 0x01 469 470typedef struct ext2_icount *ext2_icount_t; 471 472/* 473 * Flags for ext2fs_bmap 474 */ 475#define BMAP_ALLOC 0x0001 476#define BMAP_SET 0x0002 477 478/* 479 * Returned flags from ext2fs_bmap 480 */ 481#define BMAP_RET_UNINIT 0x0001 482 483/* 484 * Flags for imager.c functions 485 */ 486#define IMAGER_FLAG_INODEMAP 1 487#define IMAGER_FLAG_SPARSEWRITE 2 488 489/* 490 * For checking structure magic numbers... 491 */ 492 493#define EXT2_CHECK_MAGIC(struct, code) \ 494 if ((struct)->magic != (code)) return (code) 495 496 497/* 498 * For ext2 compression support 499 */ 500#define EXT2FS_COMPRESSED_BLKADDR ((blk_t) -1) 501#define HOLE_BLKADDR(_b) ((_b) == 0 || (_b) == EXT2FS_COMPRESSED_BLKADDR) 502 503/* 504 * Features supported by this version of the library 505 */ 506#define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\ 507 EXT2_FEATURE_COMPAT_IMAGIC_INODES|\ 508 EXT3_FEATURE_COMPAT_HAS_JOURNAL|\ 509 EXT2_FEATURE_COMPAT_RESIZE_INODE|\ 510 EXT2_FEATURE_COMPAT_DIR_INDEX|\ 511 EXT2_FEATURE_COMPAT_EXT_ATTR) 512 513/* This #ifdef is temporary until compression is fully supported */ 514#ifdef ENABLE_COMPRESSION 515#ifndef I_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL 516/* If the below warning bugs you, then have 517 `CPPFLAGS=-DI_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL' in your 518 environment at configure time. */ 519 #warning "Compression support is experimental" 520#endif 521#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 522 EXT2_FEATURE_INCOMPAT_COMPRESSION|\ 523 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 524 EXT2_FEATURE_INCOMPAT_META_BG|\ 525 EXT3_FEATURE_INCOMPAT_RECOVER|\ 526 EXT3_FEATURE_INCOMPAT_EXTENTS|\ 527 EXT4_FEATURE_INCOMPAT_FLEX_BG) 528#else 529#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 530 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 531 EXT2_FEATURE_INCOMPAT_META_BG|\ 532 EXT3_FEATURE_INCOMPAT_RECOVER|\ 533 EXT3_FEATURE_INCOMPAT_EXTENTS|\ 534 EXT4_FEATURE_INCOMPAT_FLEX_BG) 535#endif 536#define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\ 537 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|\ 538 EXT2_FEATURE_RO_COMPAT_LARGE_FILE|\ 539 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|\ 540 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|\ 541 EXT4_FEATURE_RO_COMPAT_GDT_CSUM) 542 543/* 544 * These features are only allowed if EXT2_FLAG_SOFTSUPP_FEATURES is passed 545 * to ext2fs_openfs() 546 */ 547#define EXT2_LIB_SOFTSUPP_INCOMPAT (0) 548#define EXT2_LIB_SOFTSUPP_RO_COMPAT (0) 549 550/* 551 * function prototypes 552 */ 553 554/* alloc.c */ 555extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode, 556 ext2fs_inode_bitmap map, ext2_ino_t *ret); 557extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal, 558 ext2fs_block_bitmap map, blk_t *ret); 559extern errcode_t ext2fs_new_block2(ext2_filsys fs, blk64_t goal, 560 ext2fs_block_bitmap map, blk64_t *ret); 561extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start, 562 blk_t finish, int num, 563 ext2fs_block_bitmap map, 564 blk_t *ret); 565extern errcode_t ext2fs_get_free_blocks2(ext2_filsys fs, blk64_t start, 566 blk64_t finish, int num, 567 ext2fs_block_bitmap map, 568 blk64_t *ret); 569extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal, 570 char *block_buf, blk_t *ret); 571extern errcode_t ext2fs_alloc_block2(ext2_filsys fs, blk64_t goal, 572 char *block_buf, blk64_t *ret); 573extern void ext2fs_set_alloc_block_callback(ext2_filsys fs, 574 errcode_t (*func)(ext2_filsys fs, 575 blk64_t goal, 576 blk64_t *ret), 577 errcode_t (**old)(ext2_filsys fs, 578 blk64_t goal, 579 blk64_t *ret)); 580 581/* alloc_sb.c */ 582extern int ext2fs_reserve_super_and_bgd(ext2_filsys fs, 583 dgrp_t group, 584 ext2fs_block_bitmap bmap); 585extern void ext2fs_set_block_alloc_stats_callback(ext2_filsys fs, 586 void (*func)(ext2_filsys fs, 587 blk64_t blk, 588 int inuse), 589 void (**old)(ext2_filsys fs, 590 blk64_t blk, 591 int inuse)); 592 593/* alloc_stats.c */ 594void ext2fs_inode_alloc_stats(ext2_filsys fs, ext2_ino_t ino, int inuse); 595void ext2fs_inode_alloc_stats2(ext2_filsys fs, ext2_ino_t ino, 596 int inuse, int isdir); 597void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse); 598void ext2fs_block_alloc_stats2(ext2_filsys fs, blk64_t blk, int inuse); 599 600/* alloc_tables.c */ 601extern errcode_t ext2fs_allocate_tables(ext2_filsys fs); 602extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group, 603 ext2fs_block_bitmap bmap); 604 605/* badblocks.c */ 606extern errcode_t ext2fs_u32_list_create(ext2_u32_list *ret, int size); 607extern errcode_t ext2fs_u32_list_add(ext2_u32_list bb, __u32 blk); 608extern int ext2fs_u32_list_find(ext2_u32_list bb, __u32 blk); 609extern int ext2fs_u32_list_test(ext2_u32_list bb, blk_t blk); 610extern errcode_t ext2fs_u32_list_iterate_begin(ext2_u32_list bb, 611 ext2_u32_iterate *ret); 612extern int ext2fs_u32_list_iterate(ext2_u32_iterate iter, blk_t *blk); 613extern void ext2fs_u32_list_iterate_end(ext2_u32_iterate iter); 614extern errcode_t ext2fs_u32_copy(ext2_u32_list src, ext2_u32_list *dest); 615extern int ext2fs_u32_list_equal(ext2_u32_list bb1, ext2_u32_list bb2); 616 617extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret, 618 int size); 619extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb, 620 blk_t blk); 621extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb, 622 blk_t blk); 623extern int ext2fs_u32_list_del(ext2_u32_list bb, __u32 blk); 624extern void ext2fs_badblocks_list_del(ext2_u32_list bb, __u32 blk); 625extern errcode_t 626 ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb, 627 ext2_badblocks_iterate *ret); 628extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter, 629 blk_t *blk); 630extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter); 631extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src, 632 ext2_badblocks_list *dest); 633extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1, 634 ext2_badblocks_list bb2); 635extern int ext2fs_u32_list_count(ext2_u32_list bb); 636 637/* bb_compat */ 638extern errcode_t badblocks_list_create(badblocks_list *ret, int size); 639extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk); 640extern int badblocks_list_test(badblocks_list bb, blk_t blk); 641extern errcode_t badblocks_list_iterate_begin(badblocks_list bb, 642 badblocks_iterate *ret); 643extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk); 644extern void badblocks_list_iterate_end(badblocks_iterate iter); 645extern void badblocks_list_free(badblocks_list bb); 646 647/* bb_inode.c */ 648extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs, 649 ext2_badblocks_list bb_list); 650 651/* bitmaps.c */ 652extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap); 653extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap); 654extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src, 655 ext2fs_generic_bitmap *dest); 656extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs); 657extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs); 658extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs); 659extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs); 660extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs, 661 const char *descr, 662 ext2fs_block_bitmap *ret); 663extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs, 664 const char *descr, 665 ext2fs_inode_bitmap *ret); 666extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap, 667 ext2_ino_t end, ext2_ino_t *oend); 668extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap, 669 blk_t end, blk_t *oend); 670extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap); 671extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap); 672extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs); 673extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs); 674extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end, 675 ext2fs_inode_bitmap bmap); 676extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end, 677 ext2fs_block_bitmap bmap); 678extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1, 679 ext2fs_block_bitmap bm2); 680extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1, 681 ext2fs_inode_bitmap bm2); 682extern errcode_t ext2fs_set_inode_bitmap_range(ext2fs_inode_bitmap bmap, 683 ext2_ino_t start, unsigned int num, 684 void *in); 685extern errcode_t ext2fs_get_inode_bitmap_range(ext2fs_inode_bitmap bmap, 686 ext2_ino_t start, unsigned int num, 687 void *out); 688extern errcode_t ext2fs_set_block_bitmap_range(ext2fs_block_bitmap bmap, 689 blk_t start, unsigned int num, 690 void *in); 691extern errcode_t ext2fs_get_block_bitmap_range(ext2fs_block_bitmap bmap, 692 blk_t start, unsigned int num, 693 void *out); 694 695/* blknum.c */ 696extern dgrp_t ext2fs_group_of_blk2(ext2_filsys fs, blk64_t); 697extern blk64_t ext2fs_group_first_block2(ext2_filsys fs, dgrp_t group); 698extern blk64_t ext2fs_group_last_block2(ext2_filsys fs, dgrp_t group); 699extern blk64_t ext2fs_inode_data_blocks2(ext2_filsys fs, 700 struct ext2_inode *inode); 701extern blk64_t ext2fs_inode_i_blocks(ext2_filsys fs, 702 struct ext2_inode *inode); 703extern blk64_t ext2fs_blocks_count(struct ext2_super_block *super); 704extern void ext2fs_blocks_count_set(struct ext2_super_block *super, 705 blk64_t blk); 706extern void ext2fs_blocks_count_add(struct ext2_super_block *super, 707 blk64_t blk); 708extern blk64_t ext2fs_r_blocks_count(struct ext2_super_block *super); 709extern void ext2fs_r_blocks_count_set(struct ext2_super_block *super, 710 blk64_t blk); 711extern void ext2fs_r_blocks_count_add(struct ext2_super_block *super, 712 blk64_t blk); 713extern blk64_t ext2fs_free_blocks_count(struct ext2_super_block *super); 714extern void ext2fs_free_blocks_count_set(struct ext2_super_block *super, 715 blk64_t blk); 716extern void ext2fs_free_blocks_count_add(struct ext2_super_block *super, 717 blk64_t blk); 718/* Block group descriptor accessor functions */ 719extern struct ext2_group_desc *ext2fs_group_desc(ext2_filsys fs, 720 struct ext2_group_desc *gdp, 721 dgrp_t group); 722extern blk64_t ext2fs_block_bitmap_loc(ext2_filsys fs, dgrp_t group); 723extern void ext2fs_block_bitmap_loc_set(ext2_filsys fs, dgrp_t group, 724 blk64_t blk); 725extern blk64_t ext2fs_inode_bitmap_loc(ext2_filsys fs, dgrp_t group); 726extern void ext2fs_inode_bitmap_loc_set(ext2_filsys fs, dgrp_t group, 727 blk64_t blk); 728extern blk64_t ext2fs_inode_table_loc(ext2_filsys fs, dgrp_t group); 729extern void ext2fs_inode_table_loc_set(ext2_filsys fs, dgrp_t group, 730 blk64_t blk); 731extern blk64_t ext2fs_bg_free_blocks_count(ext2_filsys fs, dgrp_t group); 732extern void ext2fs_bg_free_blocks_count_set(ext2_filsys fs, dgrp_t group, 733 blk64_t blk); 734extern blk64_t ext2fs_bg_free_inodes_count(ext2_filsys fs, dgrp_t group); 735extern void ext2fs_bg_free_inodes_count_set(ext2_filsys fs, dgrp_t group, 736 blk64_t blk); 737extern blk64_t ext2fs_bg_used_dirs_count(ext2_filsys fs, dgrp_t group); 738extern void ext2fs_bg_used_dirs_count_set(ext2_filsys fs, dgrp_t group, 739 blk64_t blk); 740extern blk64_t ext2fs_bg_itable_unused(ext2_filsys fs, dgrp_t group); 741extern void ext2fs_bg_itable_unused_set(ext2_filsys fs, dgrp_t group, 742 blk64_t blk); 743extern __u16 ext2fs_bg_flags(ext2_filsys fs, dgrp_t group); 744extern void ext2fs_bg_flags_set(ext2_filsys fs, dgrp_t group, __u16 bg_flags); 745extern void ext2fs_bg_flags_clear(ext2_filsys fs, dgrp_t group, 746 __u16 bg_flags); 747extern int ext2fs_bg_flag_test(ext2_filsys fs, dgrp_t group, __u16 bg_flag); 748extern void ext2fs_bg_flag_set(ext2_filsys fs, dgrp_t group, __u16 bg_flag); 749extern void ext2fs_bg_flag_clear(ext2_filsys fs, dgrp_t group, __u16 bg_flag); 750extern __u16 ext2fs_bg_checksum(ext2_filsys fs, dgrp_t group); 751extern void ext2fs_bg_checksum_set(ext2_filsys fs, dgrp_t group, __u16 checksum); 752extern blk64_t ext2fs_file_acl_block(const struct ext2_inode *inode); 753extern void ext2fs_file_acl_block_set(struct ext2_inode *inode, blk64_t blk); 754 755/* block.c */ 756extern errcode_t ext2fs_block_iterate(ext2_filsys fs, 757 ext2_ino_t ino, 758 int flags, 759 char *block_buf, 760 int (*func)(ext2_filsys fs, 761 blk_t *blocknr, 762 int blockcnt, 763 void *priv_data), 764 void *priv_data); 765errcode_t ext2fs_block_iterate2(ext2_filsys fs, 766 ext2_ino_t ino, 767 int flags, 768 char *block_buf, 769 int (*func)(ext2_filsys fs, 770 blk_t *blocknr, 771 e2_blkcnt_t blockcnt, 772 blk_t ref_blk, 773 int ref_offset, 774 void *priv_data), 775 void *priv_data); 776errcode_t ext2fs_block_iterate3(ext2_filsys fs, 777 ext2_ino_t ino, 778 int flags, 779 char *block_buf, 780 int (*func)(ext2_filsys fs, 781 blk64_t *blocknr, 782 e2_blkcnt_t blockcnt, 783 blk64_t ref_blk, 784 int ref_offset, 785 void *priv_data), 786 void *priv_data); 787 788/* bmap.c */ 789extern errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino, 790 struct ext2_inode *inode, 791 char *block_buf, int bmap_flags, 792 blk_t block, blk_t *phys_blk); 793extern errcode_t ext2fs_bmap2(ext2_filsys fs, ext2_ino_t ino, 794 struct ext2_inode *inode, 795 char *block_buf, int bmap_flags, blk64_t block, 796 int *ret_flags, blk64_t *phys_blk); 797 798#if 0 799/* bmove.c */ 800extern errcode_t ext2fs_move_blocks(ext2_filsys fs, 801 ext2fs_block_bitmap reserve, 802 ext2fs_block_bitmap alloc_map, 803 int flags); 804#endif 805 806/* check_desc.c */ 807extern errcode_t ext2fs_check_desc(ext2_filsys fs); 808 809/* closefs.c */ 810extern errcode_t ext2fs_close(ext2_filsys fs); 811extern errcode_t ext2fs_flush(ext2_filsys fs); 812extern int ext2fs_bg_has_super(ext2_filsys fs, int group_block); 813extern errcode_t ext2fs_super_and_bgd_loc2(ext2_filsys fs, 814 dgrp_t group, 815 blk64_t *ret_super_blk, 816 blk64_t *ret_old_desc_blk, 817 blk64_t *ret_new_desc_blk, 818 blk_t *ret_used_blks); 819extern int ext2fs_super_and_bgd_loc(ext2_filsys fs, 820 dgrp_t group, 821 blk_t *ret_super_blk, 822 blk_t *ret_old_desc_blk, 823 blk_t *ret_new_desc_blk, 824 int *ret_meta_bg); 825extern void ext2fs_update_dynamic_rev(ext2_filsys fs); 826 827/* csum.c */ 828extern void ext2fs_group_desc_csum_set(ext2_filsys fs, dgrp_t group); 829extern int ext2fs_group_desc_csum_verify(ext2_filsys fs, dgrp_t group); 830extern errcode_t ext2fs_set_gdt_csum(ext2_filsys fs); 831 832/* dblist.c */ 833 834extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs); 835extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist); 836extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ext2_ino_t ino, 837 blk_t blk, int blockcnt); 838extern void ext2fs_dblist_sort(ext2_dblist dblist, 839 EXT2_QSORT_TYPE (*sortfunc)(const void *, 840 const void *)); 841extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist, 842 int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info, 843 void *priv_data), 844 void *priv_data); 845extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ext2_ino_t ino, 846 blk_t blk, int blockcnt); 847extern errcode_t ext2fs_copy_dblist(ext2_dblist src, 848 ext2_dblist *dest); 849extern int ext2fs_dblist_count(ext2_dblist dblist); 850extern errcode_t ext2fs_dblist_get_last(ext2_dblist dblist, 851 struct ext2_db_entry **entry); 852extern errcode_t ext2fs_dblist_drop_last(ext2_dblist dblist); 853 854/* dblist_dir.c */ 855extern errcode_t 856 ext2fs_dblist_dir_iterate(ext2_dblist dblist, 857 int flags, 858 char *block_buf, 859 int (*func)(ext2_ino_t dir, 860 int entry, 861 struct ext2_dir_entry *dirent, 862 int offset, 863 int blocksize, 864 char *buf, 865 void *priv_data), 866 void *priv_data); 867 868/* dirblock.c */ 869extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block, 870 void *buf); 871extern errcode_t ext2fs_read_dir_block2(ext2_filsys fs, blk_t block, 872 void *buf, int flags); 873extern errcode_t ext2fs_read_dir_block3(ext2_filsys fs, blk64_t block, 874 void *buf, int flags); 875extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block, 876 void *buf); 877extern errcode_t ext2fs_write_dir_block2(ext2_filsys fs, blk_t block, 878 void *buf, int flags); 879extern errcode_t ext2fs_write_dir_block3(ext2_filsys fs, blk64_t block, 880 void *buf, int flags); 881 882/* dirhash.c */ 883extern errcode_t ext2fs_dirhash(int version, const char *name, int len, 884 const __u32 *seed, 885 ext2_dirhash_t *ret_hash, 886 ext2_dirhash_t *ret_minor_hash); 887 888 889/* dir_iterate.c */ 890extern errcode_t ext2fs_get_rec_len(ext2_filsys fs, 891 struct ext2_dir_entry *dirent, 892 unsigned int *rec_len); 893extern errcode_t ext2fs_set_rec_len(ext2_filsys fs, 894 unsigned int len, 895 struct ext2_dir_entry *dirent); 896extern errcode_t ext2fs_dir_iterate(ext2_filsys fs, 897 ext2_ino_t dir, 898 int flags, 899 char *block_buf, 900 int (*func)(struct ext2_dir_entry *dirent, 901 int offset, 902 int blocksize, 903 char *buf, 904 void *priv_data), 905 void *priv_data); 906extern errcode_t ext2fs_dir_iterate2(ext2_filsys fs, 907 ext2_ino_t dir, 908 int flags, 909 char *block_buf, 910 int (*func)(ext2_ino_t dir, 911 int entry, 912 struct ext2_dir_entry *dirent, 913 int offset, 914 int blocksize, 915 char *buf, 916 void *priv_data), 917 void *priv_data); 918 919/* dupfs.c */ 920extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest); 921 922/* expanddir.c */ 923extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir); 924 925/* ext_attr.c */ 926extern __u32 ext2fs_ext_attr_hash_entry(struct ext2_ext_attr_entry *entry, 927 void *data); 928extern errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf); 929extern errcode_t ext2fs_read_ext_attr2(ext2_filsys fs, blk64_t block, 930 void *buf); 931extern errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block, 932 void *buf); 933extern errcode_t ext2fs_write_ext_attr2(ext2_filsys fs, blk64_t block, 934 void *buf); 935extern errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk, 936 char *block_buf, 937 int adjust, __u32 *newcount); 938extern errcode_t ext2fs_adjust_ea_refcount2(ext2_filsys fs, blk64_t blk, 939 char *block_buf, 940 int adjust, __u32 *newcount); 941 942/* extent.c */ 943extern errcode_t ext2fs_extent_header_verify(void *ptr, int size); 944extern errcode_t ext2fs_extent_open(ext2_filsys fs, ext2_ino_t ino, 945 ext2_extent_handle_t *handle); 946extern errcode_t ext2fs_extent_open2(ext2_filsys fs, ext2_ino_t ino, 947 struct ext2_inode *inode, 948 ext2_extent_handle_t *ret_handle); 949extern void ext2fs_extent_free(ext2_extent_handle_t handle); 950extern errcode_t ext2fs_extent_get(ext2_extent_handle_t handle, 951 int flags, struct ext2fs_extent *extent); 952extern errcode_t ext2fs_extent_replace(ext2_extent_handle_t handle, int flags, 953 struct ext2fs_extent *extent); 954extern errcode_t ext2fs_extent_insert(ext2_extent_handle_t handle, int flags, 955 struct ext2fs_extent *extent); 956extern errcode_t ext2fs_extent_set_bmap(ext2_extent_handle_t handle, 957 blk64_t logical, blk64_t physical, 958 int flags); 959extern errcode_t ext2fs_extent_delete(ext2_extent_handle_t handle, int flags); 960extern errcode_t ext2fs_extent_get_info(ext2_extent_handle_t handle, 961 struct ext2_extent_info *info); 962extern errcode_t ext2fs_extent_goto(ext2_extent_handle_t handle, 963 blk64_t blk); 964 965/* fileio.c */ 966extern errcode_t ext2fs_file_open2(ext2_filsys fs, ext2_ino_t ino, 967 struct ext2_inode *inode, 968 int flags, ext2_file_t *ret); 969extern errcode_t ext2fs_file_open(ext2_filsys fs, ext2_ino_t ino, 970 int flags, ext2_file_t *ret); 971extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file); 972extern errcode_t ext2fs_file_close(ext2_file_t file); 973extern errcode_t ext2fs_file_flush(ext2_file_t file); 974extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf, 975 unsigned int wanted, unsigned int *got); 976extern errcode_t ext2fs_file_write(ext2_file_t file, const void *buf, 977 unsigned int nbytes, unsigned int *written); 978extern errcode_t ext2fs_file_llseek(ext2_file_t file, __u64 offset, 979 int whence, __u64 *ret_pos); 980extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset, 981 int whence, ext2_off_t *ret_pos); 982errcode_t ext2fs_file_get_lsize(ext2_file_t file, __u64 *ret_size); 983extern ext2_off_t ext2fs_file_get_size(ext2_file_t file); 984extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size); 985 986/* finddev.c */ 987extern char *ext2fs_find_block_device(dev_t device); 988 989/* flushb.c */ 990extern errcode_t ext2fs_sync_device(int fd, int flushb); 991 992/* freefs.c */ 993extern void ext2fs_free(ext2_filsys fs); 994extern void ext2fs_free_dblist(ext2_dblist dblist); 995extern void ext2fs_badblocks_list_free(ext2_badblocks_list bb); 996extern void ext2fs_u32_list_free(ext2_u32_list bb); 997 998/* gen_bitmap.c */ 999extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap); 1000extern errcode_t ext2fs_make_generic_bitmap(errcode_t magic, ext2_filsys fs, 1001 __u32 start, __u32 end, 1002 __u32 real_end, 1003 const char *descr, char *init_map, 1004 ext2fs_generic_bitmap *ret); 1005extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start, 1006 __u32 end, 1007 __u32 real_end, 1008 const char *descr, 1009 ext2fs_generic_bitmap *ret); 1010extern errcode_t ext2fs_copy_generic_bitmap(ext2fs_generic_bitmap src, 1011 ext2fs_generic_bitmap *dest); 1012extern void ext2fs_clear_generic_bitmap(ext2fs_generic_bitmap bitmap); 1013extern errcode_t ext2fs_fudge_generic_bitmap_end(ext2fs_inode_bitmap bitmap, 1014 errcode_t magic, 1015 errcode_t neq, 1016 ext2_ino_t end, 1017 ext2_ino_t *oend); 1018extern void ext2fs_set_generic_bitmap_padding(ext2fs_generic_bitmap map); 1019extern errcode_t ext2fs_resize_generic_bitmap(errcode_t magic, 1020 __u32 new_end, 1021 __u32 new_real_end, 1022 ext2fs_generic_bitmap bmap); 1023extern errcode_t ext2fs_compare_generic_bitmap(errcode_t magic, errcode_t neq, 1024 ext2fs_generic_bitmap bm1, 1025 ext2fs_generic_bitmap bm2); 1026extern errcode_t ext2fs_get_generic_bitmap_range(ext2fs_generic_bitmap bmap, 1027 errcode_t magic, 1028 __u32 start, __u32 num, 1029 void *out); 1030extern errcode_t ext2fs_set_generic_bitmap_range(ext2fs_generic_bitmap bmap, 1031 errcode_t magic, 1032 __u32 start, __u32 num, 1033 void *in); 1034 1035/* getsize.c */ 1036extern errcode_t ext2fs_get_device_size(const char *file, int blocksize, 1037 blk_t *retblocks); 1038extern errcode_t ext2fs_get_device_size2(const char *file, int blocksize, 1039 blk64_t *retblocks); 1040 1041/* getsectsize.c */ 1042errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize); 1043 1044/* i_block.c */ 1045errcode_t ext2fs_iblk_add_blocks(ext2_filsys fs, struct ext2_inode *inode, 1046 blk64_t num_blocks); 1047errcode_t ext2fs_iblk_sub_blocks(ext2_filsys fs, struct ext2_inode *inode, 1048 blk64_t num_blocks); 1049errcode_t ext2fs_iblk_set(ext2_filsys fs, struct ext2_inode *inode, blk64_t b); 1050 1051/* imager.c */ 1052extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags); 1053extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags); 1054extern errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd, int flags); 1055extern errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd, int flags); 1056extern errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags); 1057extern errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags); 1058 1059/* ind_block.c */ 1060errcode_t ext2fs_read_ind_block(ext2_filsys fs, blk_t blk, void *buf); 1061errcode_t ext2fs_write_ind_block(ext2_filsys fs, blk_t blk, void *buf); 1062 1063/* initialize.c */ 1064extern errcode_t ext2fs_initialize(const char *name, int flags, 1065 struct ext2_super_block *param, 1066 io_manager manager, ext2_filsys *ret_fs); 1067 1068/* icount.c */ 1069extern void ext2fs_free_icount(ext2_icount_t icount); 1070extern errcode_t ext2fs_create_icount_tdb(ext2_filsys fs, char *tdb_dir, 1071 int flags, ext2_icount_t *ret); 1072extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags, 1073 unsigned int size, 1074 ext2_icount_t hint, ext2_icount_t *ret); 1075extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags, 1076 unsigned int size, 1077 ext2_icount_t *ret); 1078extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ext2_ino_t ino, 1079 __u16 *ret); 1080extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ext2_ino_t ino, 1081 __u16 *ret); 1082extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ext2_ino_t ino, 1083 __u16 *ret); 1084extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ext2_ino_t ino, 1085 __u16 count); 1086extern ext2_ino_t ext2fs_get_icount_size(ext2_icount_t icount); 1087errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *); 1088 1089/* inode.c */ 1090extern errcode_t ext2fs_flush_icache(ext2_filsys fs); 1091extern errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan, 1092 ext2_ino_t *ino, 1093 struct ext2_inode *inode, 1094 int bufsize); 1095extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks, 1096 ext2_inode_scan *ret_scan); 1097extern void ext2fs_close_inode_scan(ext2_inode_scan scan); 1098extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino, 1099 struct ext2_inode *inode); 1100extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan, 1101 int group); 1102extern void ext2fs_set_inode_callback 1103 (ext2_inode_scan scan, 1104 errcode_t (*done_group)(ext2_filsys fs, 1105 ext2_inode_scan scan, 1106 dgrp_t group, 1107 void * priv_data), 1108 void *done_group_data); 1109extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags, 1110 int clear_flags); 1111extern errcode_t ext2fs_read_inode_full(ext2_filsys fs, ext2_ino_t ino, 1112 struct ext2_inode * inode, 1113 int bufsize); 1114extern errcode_t ext2fs_read_inode (ext2_filsys fs, ext2_ino_t ino, 1115 struct ext2_inode * inode); 1116extern errcode_t ext2fs_write_inode_full(ext2_filsys fs, ext2_ino_t ino, 1117 struct ext2_inode * inode, 1118 int bufsize); 1119extern errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino, 1120 struct ext2_inode * inode); 1121extern errcode_t ext2fs_write_new_inode(ext2_filsys fs, ext2_ino_t ino, 1122 struct ext2_inode * inode); 1123extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); 1124extern errcode_t ext2fs_check_directory(ext2_filsys fs, ext2_ino_t ino); 1125 1126/* inode_io.c */ 1127extern io_manager inode_io_manager; 1128extern errcode_t ext2fs_inode_io_intern(ext2_filsys fs, ext2_ino_t ino, 1129 char **name); 1130extern errcode_t ext2fs_inode_io_intern2(ext2_filsys fs, ext2_ino_t ino, 1131 struct ext2_inode *inode, 1132 char **name); 1133 1134/* ismounted.c */ 1135extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags); 1136extern errcode_t ext2fs_check_mount_point(const char *device, int *mount_flags, 1137 char *mtpt, int mtlen); 1138 1139/* namei.c */ 1140extern errcode_t ext2fs_lookup(ext2_filsys fs, ext2_ino_t dir, const char *name, 1141 int namelen, char *buf, ext2_ino_t *inode); 1142extern errcode_t ext2fs_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1143 const char *name, ext2_ino_t *inode); 1144errcode_t ext2fs_namei_follow(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1145 const char *name, ext2_ino_t *inode); 1146extern errcode_t ext2fs_follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1147 ext2_ino_t inode, ext2_ino_t *res_inode); 1148 1149/* native.c */ 1150int ext2fs_native_flag(void); 1151 1152/* newdir.c */ 1153extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino, 1154 ext2_ino_t parent_ino, char **block); 1155 1156/* mkdir.c */ 1157extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum, 1158 const char *name); 1159 1160/* mkjournal.c */ 1161extern errcode_t ext2fs_zero_blocks(ext2_filsys fs, blk_t blk, int num, 1162 blk_t *ret_blk, int *ret_count); 1163extern errcode_t ext2fs_zero_blocks2(ext2_filsys fs, blk64_t blk, int num, 1164 blk64_t *ret_blk, int *ret_count); 1165extern errcode_t ext2fs_create_journal_superblock(ext2_filsys fs, 1166 __u32 size, int flags, 1167 char **ret_jsb); 1168extern errcode_t ext2fs_add_journal_device(ext2_filsys fs, 1169 ext2_filsys journal_dev); 1170extern errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t size, 1171 int flags); 1172extern int ext2fs_default_journal_size(__u64 blocks); 1173 1174/* openfs.c */ 1175extern errcode_t ext2fs_open(const char *name, int flags, int superblock, 1176 unsigned int block_size, io_manager manager, 1177 ext2_filsys *ret_fs); 1178extern errcode_t ext2fs_open2(const char *name, const char *io_options, 1179 int flags, int superblock, 1180 unsigned int block_size, io_manager manager, 1181 ext2_filsys *ret_fs); 1182extern blk64_t ext2fs_descriptor_block_loc2(ext2_filsys fs, 1183 blk64_t group_block, dgrp_t i); 1184extern blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block, 1185 dgrp_t i); 1186errcode_t ext2fs_get_data_io(ext2_filsys fs, io_channel *old_io); 1187errcode_t ext2fs_set_data_io(ext2_filsys fs, io_channel new_io); 1188errcode_t ext2fs_rewrite_to_io(ext2_filsys fs, io_channel new_io); 1189 1190/* get_pathname.c */ 1191extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino, 1192 char **name); 1193 1194/* link.c */ 1195errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name, 1196 ext2_ino_t ino, int flags); 1197errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir, const char *name, 1198 ext2_ino_t ino, int flags); 1199 1200/* read_bb.c */ 1201extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs, 1202 ext2_badblocks_list *bb_list); 1203 1204/* read_bb_file.c */ 1205extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f, 1206 ext2_badblocks_list *bb_list, 1207 void *priv_data, 1208 void (*invalid)(ext2_filsys fs, 1209 blk_t blk, 1210 char *badstr, 1211 void *priv_data)); 1212extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f, 1213 ext2_badblocks_list *bb_list, 1214 void (*invalid)(ext2_filsys fs, 1215 blk_t blk)); 1216 1217/* res_gdt.c */ 1218extern errcode_t ext2fs_create_resize_inode(ext2_filsys fs); 1219 1220/* swapfs.c */ 1221extern void ext2fs_swap_ext_attr(char *to, char *from, int bufsize, 1222 int has_header); 1223extern void ext2fs_swap_ext_attr_header(struct ext2_ext_attr_header *to_header, 1224 struct ext2_ext_attr_header *from_hdr); 1225extern void ext2fs_swap_ext_attr_entry(struct ext2_ext_attr_entry *to_entry, 1226 struct ext2_ext_attr_entry *from_entry); 1227extern void ext2fs_swap_super(struct ext2_super_block * super); 1228extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp); 1229extern void ext2fs_swap_inode_full(ext2_filsys fs, struct ext2_inode_large *t, 1230 struct ext2_inode_large *f, int hostorder, 1231 int bufsize); 1232extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t, 1233 struct ext2_inode *f, int hostorder); 1234 1235/* valid_blk.c */ 1236extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode); 1237 1238/* version.c */ 1239extern int ext2fs_parse_version_string(const char *ver_string); 1240extern int ext2fs_get_library_version(const char **ver_string, 1241 const char **date_string); 1242 1243/* write_bb_file.c */ 1244extern errcode_t ext2fs_write_bb_FILE(ext2_badblocks_list bb_list, 1245 unsigned int flags, 1246 FILE *f); 1247 1248 1249/* inline functions */ 1250extern errcode_t ext2fs_get_mem(unsigned long size, void *ptr); 1251extern errcode_t ext2fs_get_array(unsigned long count, unsigned long size, void *ptr); 1252extern errcode_t ext2fs_free_mem(void *ptr); 1253extern errcode_t ext2fs_resize_mem(unsigned long old_size, 1254 unsigned long size, void *ptr); 1255extern void ext2fs_mark_super_dirty(ext2_filsys fs); 1256extern void ext2fs_mark_changed(ext2_filsys fs); 1257extern int ext2fs_test_changed(ext2_filsys fs); 1258extern void ext2fs_mark_valid(ext2_filsys fs); 1259extern void ext2fs_unmark_valid(ext2_filsys fs); 1260extern int ext2fs_test_valid(ext2_filsys fs); 1261extern void ext2fs_mark_ib_dirty(ext2_filsys fs); 1262extern void ext2fs_mark_bb_dirty(ext2_filsys fs); 1263extern int ext2fs_test_ib_dirty(ext2_filsys fs); 1264extern int ext2fs_test_bb_dirty(ext2_filsys fs); 1265extern int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk); 1266extern int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino); 1267extern blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group); 1268extern blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group); 1269extern blk_t ext2fs_inode_data_blocks(ext2_filsys fs, 1270 struct ext2_inode *inode); 1271extern unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b); 1272extern __u64 ext2fs_div64_ceil(__u64 a, __u64 b); 1273 1274/* 1275 * The actual inlined functions definitions themselves... 1276 * 1277 * If NO_INLINE_FUNCS is defined, then we won't try to do inline 1278 * functions at all! 1279 */ 1280#if (defined(INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS)) 1281#ifdef INCLUDE_INLINE_FUNCS 1282#define _INLINE_ extern 1283#else 1284#ifdef __GNUC__ 1285#define _INLINE_ extern __inline__ 1286#else /* For Watcom C */ 1287#define _INLINE_ extern inline 1288#endif 1289#endif 1290 1291#ifndef EXT2_CUSTOM_MEMORY_ROUTINES 1292#include <string.h> 1293/* 1294 * Allocate memory 1295 */ 1296_INLINE_ errcode_t ext2fs_get_mem(unsigned long size, void *ptr) 1297{ 1298 void *pp; 1299 1300 pp = malloc(size); 1301 if (!pp) 1302 return EXT2_ET_NO_MEMORY; 1303 memcpy(ptr, &pp, sizeof (pp)); 1304 return 0; 1305} 1306 1307_INLINE_ errcode_t ext2fs_get_array(unsigned long count, unsigned long size, void *ptr) 1308{ 1309 if (count && (-1UL)/count<size) 1310 return EXT2_ET_NO_MEMORY; //maybe define EXT2_ET_OVERFLOW ? 1311 return ext2fs_get_mem(count*size, ptr); 1312} 1313 1314/* 1315 * Free memory 1316 */ 1317_INLINE_ errcode_t ext2fs_free_mem(void *ptr) 1318{ 1319 void *p; 1320 1321 memcpy(&p, ptr, sizeof(p)); 1322 free(p); 1323 p = 0; 1324 memcpy(ptr, &p, sizeof(p)); 1325 return 0; 1326} 1327 1328/* 1329 * Resize memory 1330 */ 1331_INLINE_ errcode_t ext2fs_resize_mem(unsigned long EXT2FS_ATTR((unused)) old_size, 1332 unsigned long size, void *ptr) 1333{ 1334 void *p; 1335 1336 /* Use "memcpy" for pointer assignments here to avoid problems 1337 * with C99 strict type aliasing rules. */ 1338 memcpy(&p, ptr, sizeof(p)); 1339 p = realloc(p, size); 1340 if (!p) 1341 return EXT2_ET_NO_MEMORY; 1342 memcpy(ptr, &p, sizeof(p)); 1343 return 0; 1344} 1345#endif /* Custom memory routines */ 1346 1347/* 1348 * Mark a filesystem superblock as dirty 1349 */ 1350_INLINE_ void ext2fs_mark_super_dirty(ext2_filsys fs) 1351{ 1352 fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_CHANGED; 1353} 1354 1355/* 1356 * Mark a filesystem as changed 1357 */ 1358_INLINE_ void ext2fs_mark_changed(ext2_filsys fs) 1359{ 1360 fs->flags |= EXT2_FLAG_CHANGED; 1361} 1362 1363/* 1364 * Check to see if a filesystem has changed 1365 */ 1366_INLINE_ int ext2fs_test_changed(ext2_filsys fs) 1367{ 1368 return (fs->flags & EXT2_FLAG_CHANGED); 1369} 1370 1371/* 1372 * Mark a filesystem as valid 1373 */ 1374_INLINE_ void ext2fs_mark_valid(ext2_filsys fs) 1375{ 1376 fs->flags |= EXT2_FLAG_VALID; 1377} 1378 1379/* 1380 * Mark a filesystem as NOT valid 1381 */ 1382_INLINE_ void ext2fs_unmark_valid(ext2_filsys fs) 1383{ 1384 fs->flags &= ~EXT2_FLAG_VALID; 1385} 1386 1387/* 1388 * Check to see if a filesystem is valid 1389 */ 1390_INLINE_ int ext2fs_test_valid(ext2_filsys fs) 1391{ 1392 return (fs->flags & EXT2_FLAG_VALID); 1393} 1394 1395/* 1396 * Mark the inode bitmap as dirty 1397 */ 1398_INLINE_ void ext2fs_mark_ib_dirty(ext2_filsys fs) 1399{ 1400 fs->flags |= EXT2_FLAG_IB_DIRTY | EXT2_FLAG_CHANGED; 1401} 1402 1403/* 1404 * Mark the block bitmap as dirty 1405 */ 1406_INLINE_ void ext2fs_mark_bb_dirty(ext2_filsys fs) 1407{ 1408 fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_CHANGED; 1409} 1410 1411/* 1412 * Check to see if a filesystem's inode bitmap is dirty 1413 */ 1414_INLINE_ int ext2fs_test_ib_dirty(ext2_filsys fs) 1415{ 1416 return (fs->flags & EXT2_FLAG_IB_DIRTY); 1417} 1418 1419/* 1420 * Check to see if a filesystem's block bitmap is dirty 1421 */ 1422_INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs) 1423{ 1424 return (fs->flags & EXT2_FLAG_BB_DIRTY); 1425} 1426 1427/* 1428 * Return the group # of a block 1429 */ 1430_INLINE_ int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk) 1431{ 1432 return ext2fs_group_of_blk2(fs, blk); 1433} 1434/* 1435 * Return the group # of an inode number 1436 */ 1437_INLINE_ int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino) 1438{ 1439 return (ino - 1) / fs->super->s_inodes_per_group; 1440} 1441 1442/* 1443 * Return the first block (inclusive) in a group 1444 */ 1445_INLINE_ blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group) 1446{ 1447 return ext2fs_group_first_block2(fs, group); 1448} 1449 1450/* 1451 * Return the last block (inclusive) in a group 1452 */ 1453_INLINE_ blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group) 1454{ 1455 return ext2fs_group_last_block2(fs, group); 1456} 1457 1458_INLINE_ blk_t ext2fs_inode_data_blocks(ext2_filsys fs, 1459 struct ext2_inode *inode) 1460{ 1461 return ext2fs_inode_data_blocks2(fs, inode); 1462} 1463 1464/* 1465 * This is an efficient, overflow safe way of calculating ceil((1.0 * a) / b) 1466 */ 1467_INLINE_ unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b) 1468{ 1469 if (!a) 1470 return 0; 1471 return ((a - 1) / b) + 1; 1472} 1473 1474_INLINE_ __u64 ext2fs_div64_ceil(__u64 a, __u64 b) 1475{ 1476 if (!a) 1477 return 0; 1478 return ((a - 1) / b) + 1; 1479} 1480 1481#undef _INLINE_ 1482#endif 1483 1484#ifdef __cplusplus 1485} 1486#endif 1487 1488#endif /* _EXT2FS_EXT2FS_H */ 1489