ext2fs.h revision 743011fbac672c488e54b843bf8a759bef10862e
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 176 177/* 178 * Special flag in the ext2 inode i_flag field that means that this is 179 * a new inode. (So that ext2_write_inode() can clear extra fields.) 180 */ 181#define EXT2_NEW_INODE_FL 0x80000000 182 183/* 184 * Flags for mkjournal 185 * 186 * EXT2_MKJOURNAL_V1_SUPER Make a (deprecated) V1 journal superblock 187 */ 188#define EXT2_MKJOURNAL_V1_SUPER 0x0000001 189 190struct struct_ext2_filsys { 191 errcode_t magic; 192 io_channel io; 193 int flags; 194 char * device_name; 195 struct ext2_super_block * super; 196 unsigned int blocksize; 197 int fragsize; 198 dgrp_t group_desc_count; 199 unsigned long desc_blocks; 200 struct ext2_group_desc * group_desc; 201 int inode_blocks_per_group; 202 ext2fs_inode_bitmap inode_map; 203 ext2fs_block_bitmap block_map; 204 errcode_t (*get_blocks)(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); 205 errcode_t (*check_directory)(ext2_filsys fs, ext2_ino_t ino); 206 errcode_t (*write_bitmaps)(ext2_filsys fs); 207 errcode_t (*read_inode)(ext2_filsys fs, ext2_ino_t ino, 208 struct ext2_inode *inode); 209 errcode_t (*write_inode)(ext2_filsys fs, ext2_ino_t ino, 210 struct ext2_inode *inode); 211 ext2_badblocks_list badblocks; 212 ext2_dblist dblist; 213 __u32 stride; /* for mke2fs */ 214 struct ext2_super_block * orig_super; 215 struct ext2_image_hdr * image_header; 216 __u32 umask; 217 time_t now; 218 /* 219 * Reserved for future expansion 220 */ 221 __u32 reserved[7]; 222 223 /* 224 * Reserved for the use of the calling application. 225 */ 226 void * priv_data; 227 228 /* 229 * Inode cache 230 */ 231 struct ext2_inode_cache *icache; 232 io_channel image_io; 233 234 /* 235 * More callback functions 236 */ 237 errcode_t (*get_alloc_block)(ext2_filsys fs, blk64_t goal, 238 blk64_t *ret); 239 void (*block_alloc_stats)(ext2_filsys fs, blk64_t blk, int inuse); 240}; 241 242#if EXT2_FLAT_INCLUDES 243#include "e2_bitops.h" 244#else 245#include <ext2fs/bitops.h> 246#endif 247 248/* 249 * Return flags for the block iterator functions 250 */ 251#define BLOCK_CHANGED 1 252#define BLOCK_ABORT 2 253#define BLOCK_ERROR 4 254 255/* 256 * Block interate flags 257 * 258 * BLOCK_FLAG_APPEND, or BLOCK_FLAG_HOLE, indicates that the interator 259 * function should be called on blocks where the block number is zero. 260 * This is used by ext2fs_expand_dir() to be able to add a new block 261 * to an inode. It can also be used for programs that want to be able 262 * to deal with files that contain "holes". 263 * 264 * BLOCK_FLAG_DEPTH_TRAVERSE indicates that the iterator function for 265 * the indirect, doubly indirect, etc. blocks should be called after 266 * all of the blocks containined in the indirect blocks are processed. 267 * This is useful if you are going to be deallocating blocks from an 268 * inode. 269 * 270 * BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be 271 * called for data blocks only. 272 * 273 * BLOCK_FLAG_READ_ONLY is a promise by the caller that it will not 274 * modify returned block number. 275 * 276 * BLOCK_FLAG_NO_LARGE is for internal use only. It informs 277 * ext2fs_block_iterate2 that large files won't be accepted. 278 */ 279#define BLOCK_FLAG_APPEND 1 280#define BLOCK_FLAG_HOLE 1 281#define BLOCK_FLAG_DEPTH_TRAVERSE 2 282#define BLOCK_FLAG_DATA_ONLY 4 283#define BLOCK_FLAG_READ_ONLY 8 284 285#define BLOCK_FLAG_NO_LARGE 0x1000 286 287/* 288 * Magic "block count" return values for the block iterator function. 289 */ 290#define BLOCK_COUNT_IND (-1) 291#define BLOCK_COUNT_DIND (-2) 292#define BLOCK_COUNT_TIND (-3) 293#define BLOCK_COUNT_TRANSLATOR (-4) 294 295#if 0 296/* 297 * Flags for ext2fs_move_blocks 298 */ 299#define EXT2_BMOVE_GET_DBLIST 0x0001 300#define EXT2_BMOVE_DEBUG 0x0002 301#endif 302 303/* 304 * Generic (non-filesystem layout specific) extents structure 305 */ 306 307#define EXT2_EXTENT_FLAGS_LEAF 0x0001 308#define EXT2_EXTENT_FLAGS_UNINIT 0x0002 309#define EXT2_EXTENT_FLAGS_SECOND_VISIT 0x0004 310 311struct ext2fs_extent { 312 blk64_t e_pblk; /* first physical block */ 313 blk64_t e_lblk; /* first logical block extent covers */ 314 __u32 e_len; /* number of blocks covered by extent */ 315 __u32 e_flags; /* extent flags */ 316}; 317 318typedef struct ext2_extent_handle *ext2_extent_handle_t; 319typedef struct ext2_extent_path *ext2_extent_path_t; 320 321/* 322 * Flags used by ext2fs_extent_get() 323 */ 324#define EXT2_EXTENT_CURRENT 0x0000 325#define EXT2_EXTENT_MOVE_MASK 0x000F 326#define EXT2_EXTENT_ROOT 0x0001 327#define EXT2_EXTENT_LAST_LEAF 0x0002 328#define EXT2_EXTENT_FIRST_SIB 0x0003 329#define EXT2_EXTENT_LAST_SIB 0x0004 330#define EXT2_EXTENT_NEXT_SIB 0x0005 331#define EXT2_EXTENT_PREV_SIB 0x0006 332#define EXT2_EXTENT_NEXT_LEAF 0x0007 333#define EXT2_EXTENT_PREV_LEAF 0x0008 334#define EXT2_EXTENT_NEXT 0x0009 335#define EXT2_EXTENT_PREV 0x000A 336#define EXT2_EXTENT_UP 0x000B 337#define EXT2_EXTENT_DOWN 0x000C 338#define EXT2_EXTENT_DOWN_AND_LAST 0x000D 339 340/* 341 * Flags used by ext2fs_extent_insert() 342 */ 343#define EXT2_EXTENT_INSERT_AFTER 0x0001 /* insert after handle loc'n */ 344#define EXT2_EXTENT_INSERT_NOSPLIT 0x0002 /* insert may not cause split */ 345 346/* 347 * Flags used by ext2fs_extent_delete() 348 */ 349#define EXT2_EXTENT_DELETE_KEEP_EMPTY 0x001 /* keep node if last extnt gone */ 350 351/* 352 * Flags used by ext2fs_extent_set_bmap() 353 */ 354#define EXT2_EXTENT_SET_BMAP_UNINIT 0x0001 355 356/* 357 * Data structure returned by ext2fs_extent_get_info() 358 */ 359struct ext2_extent_info { 360 int curr_entry; 361 int curr_level; 362 int num_entries; 363 int max_entries; 364 int max_depth; 365 int bytes_avail; 366 blk64_t max_lblk; 367 blk64_t max_pblk; 368 __u32 max_len; 369 __u32 max_uninit_len; 370}; 371 372/* 373 * Flags for directory block reading and writing functions 374 */ 375#define EXT2_DIRBLOCK_V2_STRUCT 0x0001 376 377/* 378 * Return flags for the directory iterator functions 379 */ 380#define DIRENT_CHANGED 1 381#define DIRENT_ABORT 2 382#define DIRENT_ERROR 3 383 384/* 385 * Directory iterator flags 386 */ 387 388#define DIRENT_FLAG_INCLUDE_EMPTY 1 389#define DIRENT_FLAG_INCLUDE_REMOVED 2 390 391#define DIRENT_DOT_FILE 1 392#define DIRENT_DOT_DOT_FILE 2 393#define DIRENT_OTHER_FILE 3 394#define DIRENT_DELETED_FILE 4 395 396/* 397 * Inode scan definitions 398 */ 399typedef struct ext2_struct_inode_scan *ext2_inode_scan; 400 401/* 402 * ext2fs_scan flags 403 */ 404#define EXT2_SF_CHK_BADBLOCKS 0x0001 405#define EXT2_SF_BAD_INODE_BLK 0x0002 406#define EXT2_SF_BAD_EXTRA_BYTES 0x0004 407#define EXT2_SF_SKIP_MISSING_ITABLE 0x0008 408#define EXT2_SF_DO_LAZY 0x0010 409 410/* 411 * ext2fs_check_if_mounted flags 412 */ 413#define EXT2_MF_MOUNTED 1 414#define EXT2_MF_ISROOT 2 415#define EXT2_MF_READONLY 4 416#define EXT2_MF_SWAP 8 417#define EXT2_MF_BUSY 16 418 419/* 420 * Ext2/linux mode flags. We define them here so that we don't need 421 * to depend on the OS's sys/stat.h, since we may be compiling on a 422 * non-Linux system. 423 */ 424#define LINUX_S_IFMT 00170000 425#define LINUX_S_IFSOCK 0140000 426#define LINUX_S_IFLNK 0120000 427#define LINUX_S_IFREG 0100000 428#define LINUX_S_IFBLK 0060000 429#define LINUX_S_IFDIR 0040000 430#define LINUX_S_IFCHR 0020000 431#define LINUX_S_IFIFO 0010000 432#define LINUX_S_ISUID 0004000 433#define LINUX_S_ISGID 0002000 434#define LINUX_S_ISVTX 0001000 435 436#define LINUX_S_IRWXU 00700 437#define LINUX_S_IRUSR 00400 438#define LINUX_S_IWUSR 00200 439#define LINUX_S_IXUSR 00100 440 441#define LINUX_S_IRWXG 00070 442#define LINUX_S_IRGRP 00040 443#define LINUX_S_IWGRP 00020 444#define LINUX_S_IXGRP 00010 445 446#define LINUX_S_IRWXO 00007 447#define LINUX_S_IROTH 00004 448#define LINUX_S_IWOTH 00002 449#define LINUX_S_IXOTH 00001 450 451#define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK) 452#define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG) 453#define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR) 454#define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR) 455#define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK) 456#define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO) 457#define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK) 458 459/* 460 * ext2 size of an inode 461 */ 462#define EXT2_I_SIZE(i) ((i)->i_size | ((__u64) (i)->i_size_high << 32)) 463 464/* 465 * ext2_icount_t abstraction 466 */ 467#define EXT2_ICOUNT_OPT_INCREMENT 0x01 468 469typedef struct ext2_icount *ext2_icount_t; 470 471/* 472 * Flags for ext2fs_bmap 473 */ 474#define BMAP_ALLOC 0x0001 475#define BMAP_SET 0x0002 476 477/* 478 * Returned flags from ext2fs_bmap 479 */ 480#define BMAP_RET_UNINIT 0x0001 481 482/* 483 * Flags for imager.c functions 484 */ 485#define IMAGER_FLAG_INODEMAP 1 486#define IMAGER_FLAG_SPARSEWRITE 2 487 488/* 489 * For checking structure magic numbers... 490 */ 491 492#define EXT2_CHECK_MAGIC(struct, code) \ 493 if ((struct)->magic != (code)) return (code) 494 495 496/* 497 * For ext2 compression support 498 */ 499#define EXT2FS_COMPRESSED_BLKADDR ((blk_t) -1) 500#define HOLE_BLKADDR(_b) ((_b) == 0 || (_b) == EXT2FS_COMPRESSED_BLKADDR) 501 502/* 503 * Features supported by this version of the library 504 */ 505#define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\ 506 EXT2_FEATURE_COMPAT_IMAGIC_INODES|\ 507 EXT3_FEATURE_COMPAT_HAS_JOURNAL|\ 508 EXT2_FEATURE_COMPAT_RESIZE_INODE|\ 509 EXT2_FEATURE_COMPAT_DIR_INDEX|\ 510 EXT2_FEATURE_COMPAT_EXT_ATTR) 511 512/* This #ifdef is temporary until compression is fully supported */ 513#ifdef ENABLE_COMPRESSION 514#ifndef I_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL 515/* If the below warning bugs you, then have 516 `CPPFLAGS=-DI_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL' in your 517 environment at configure time. */ 518 #warning "Compression support is experimental" 519#endif 520#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 521 EXT2_FEATURE_INCOMPAT_COMPRESSION|\ 522 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 523 EXT2_FEATURE_INCOMPAT_META_BG|\ 524 EXT3_FEATURE_INCOMPAT_RECOVER|\ 525 EXT3_FEATURE_INCOMPAT_EXTENTS|\ 526 EXT4_FEATURE_INCOMPAT_FLEX_BG) 527#else 528#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 529 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 530 EXT2_FEATURE_INCOMPAT_META_BG|\ 531 EXT3_FEATURE_INCOMPAT_RECOVER|\ 532 EXT3_FEATURE_INCOMPAT_EXTENTS|\ 533 EXT4_FEATURE_INCOMPAT_FLEX_BG) 534#endif 535#define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\ 536 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|\ 537 EXT2_FEATURE_RO_COMPAT_LARGE_FILE|\ 538 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|\ 539 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|\ 540 EXT4_FEATURE_RO_COMPAT_GDT_CSUM) 541 542/* 543 * These features are only allowed if EXT2_FLAG_SOFTSUPP_FEATURES is passed 544 * to ext2fs_openfs() 545 */ 546#define EXT2_LIB_SOFTSUPP_INCOMPAT (0) 547#define EXT2_LIB_SOFTSUPP_RO_COMPAT (0) 548 549/* 550 * function prototypes 551 */ 552 553/* alloc.c */ 554extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode, 555 ext2fs_inode_bitmap map, ext2_ino_t *ret); 556extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal, 557 ext2fs_block_bitmap map, blk_t *ret); 558extern errcode_t ext2fs_new_block2(ext2_filsys fs, blk64_t goal, 559 ext2fs_block_bitmap map, blk64_t *ret); 560extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start, 561 blk_t finish, int num, 562 ext2fs_block_bitmap map, 563 blk_t *ret); 564extern errcode_t ext2fs_get_free_blocks2(ext2_filsys fs, blk64_t start, 565 blk64_t finish, int num, 566 ext2fs_block_bitmap map, 567 blk64_t *ret); 568extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal, 569 char *block_buf, blk_t *ret); 570extern errcode_t ext2fs_alloc_block2(ext2_filsys fs, blk64_t goal, 571 char *block_buf, blk64_t *ret); 572extern void ext2fs_set_alloc_block_callback(ext2_filsys fs, 573 errcode_t (*func)(ext2_filsys fs, 574 blk64_t goal, 575 blk64_t *ret), 576 errcode_t (**old)(ext2_filsys fs, 577 blk64_t goal, 578 blk64_t *ret)); 579 580/* alloc_sb.c */ 581extern int ext2fs_reserve_super_and_bgd(ext2_filsys fs, 582 dgrp_t group, 583 ext2fs_block_bitmap bmap); 584extern void ext2fs_set_block_alloc_stats_callback(ext2_filsys fs, 585 void (*func)(ext2_filsys fs, 586 blk64_t blk, 587 int inuse), 588 void (**old)(ext2_filsys fs, 589 blk64_t blk, 590 int inuse)); 591 592/* alloc_stats.c */ 593void ext2fs_inode_alloc_stats(ext2_filsys fs, ext2_ino_t ino, int inuse); 594void ext2fs_inode_alloc_stats2(ext2_filsys fs, ext2_ino_t ino, 595 int inuse, int isdir); 596void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse); 597void ext2fs_block_alloc_stats2(ext2_filsys fs, blk64_t blk, int inuse); 598 599/* alloc_tables.c */ 600extern errcode_t ext2fs_allocate_tables(ext2_filsys fs); 601extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group, 602 ext2fs_block_bitmap bmap); 603 604/* badblocks.c */ 605extern errcode_t ext2fs_u32_list_create(ext2_u32_list *ret, int size); 606extern errcode_t ext2fs_u32_list_add(ext2_u32_list bb, __u32 blk); 607extern int ext2fs_u32_list_find(ext2_u32_list bb, __u32 blk); 608extern int ext2fs_u32_list_test(ext2_u32_list bb, blk_t blk); 609extern errcode_t ext2fs_u32_list_iterate_begin(ext2_u32_list bb, 610 ext2_u32_iterate *ret); 611extern int ext2fs_u32_list_iterate(ext2_u32_iterate iter, blk_t *blk); 612extern void ext2fs_u32_list_iterate_end(ext2_u32_iterate iter); 613extern errcode_t ext2fs_u32_copy(ext2_u32_list src, ext2_u32_list *dest); 614extern int ext2fs_u32_list_equal(ext2_u32_list bb1, ext2_u32_list bb2); 615 616extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret, 617 int size); 618extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb, 619 blk_t blk); 620extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb, 621 blk_t blk); 622extern int ext2fs_u32_list_del(ext2_u32_list bb, __u32 blk); 623extern void ext2fs_badblocks_list_del(ext2_u32_list bb, __u32 blk); 624extern errcode_t 625 ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb, 626 ext2_badblocks_iterate *ret); 627extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter, 628 blk_t *blk); 629extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter); 630extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src, 631 ext2_badblocks_list *dest); 632extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1, 633 ext2_badblocks_list bb2); 634extern int ext2fs_u32_list_count(ext2_u32_list bb); 635 636/* bb_compat */ 637extern errcode_t badblocks_list_create(badblocks_list *ret, int size); 638extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk); 639extern int badblocks_list_test(badblocks_list bb, blk_t blk); 640extern errcode_t badblocks_list_iterate_begin(badblocks_list bb, 641 badblocks_iterate *ret); 642extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk); 643extern void badblocks_list_iterate_end(badblocks_iterate iter); 644extern void badblocks_list_free(badblocks_list bb); 645 646/* bb_inode.c */ 647extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs, 648 ext2_badblocks_list bb_list); 649 650/* bitmaps.c */ 651extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap); 652extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap); 653extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src, 654 ext2fs_generic_bitmap *dest); 655extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs); 656extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs); 657extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs); 658extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs); 659extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs, 660 const char *descr, 661 ext2fs_block_bitmap *ret); 662extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs, 663 const char *descr, 664 ext2fs_inode_bitmap *ret); 665extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap, 666 ext2_ino_t end, ext2_ino_t *oend); 667extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap, 668 blk_t end, blk_t *oend); 669extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap); 670extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap); 671extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs); 672extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs); 673extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end, 674 ext2fs_inode_bitmap bmap); 675extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end, 676 ext2fs_block_bitmap bmap); 677extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1, 678 ext2fs_block_bitmap bm2); 679extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1, 680 ext2fs_inode_bitmap bm2); 681extern errcode_t ext2fs_set_inode_bitmap_range(ext2fs_inode_bitmap bmap, 682 ext2_ino_t start, unsigned int num, 683 void *in); 684extern errcode_t ext2fs_get_inode_bitmap_range(ext2fs_inode_bitmap bmap, 685 ext2_ino_t start, unsigned int num, 686 void *out); 687extern errcode_t ext2fs_set_block_bitmap_range(ext2fs_block_bitmap bmap, 688 blk_t start, unsigned int num, 689 void *in); 690extern errcode_t ext2fs_get_block_bitmap_range(ext2fs_block_bitmap bmap, 691 blk_t start, unsigned int num, 692 void *out); 693 694/* blknum.c */ 695extern dgrp_t ext2fs_group_of_blk2(ext2_filsys fs, blk64_t); 696extern blk64_t ext2fs_group_first_block2(ext2_filsys fs, dgrp_t group); 697extern blk64_t ext2fs_group_last_block2(ext2_filsys fs, dgrp_t group); 698extern blk64_t ext2fs_inode_data_blocks2(ext2_filsys fs, 699 struct ext2_inode *inode); 700extern blk64_t ext2fs_inode_i_blocks(ext2_filsys fs, 701 struct ext2_inode *inode); 702extern blk64_t ext2fs_blocks_count(struct ext2_super_block *super); 703extern void ext2fs_blocks_count_set(struct ext2_super_block *super, 704 blk64_t blk); 705extern void ext2fs_blocks_count_add(struct ext2_super_block *super, 706 blk64_t blk); 707extern blk64_t ext2fs_r_blocks_count(struct ext2_super_block *super); 708extern void ext2fs_r_blocks_count_set(struct ext2_super_block *super, 709 blk64_t blk); 710extern void ext2fs_r_blocks_count_add(struct ext2_super_block *super, 711 blk64_t blk); 712extern blk64_t ext2fs_free_blocks_count(struct ext2_super_block *super); 713extern void ext2fs_free_blocks_count_set(struct ext2_super_block *super, 714 blk64_t blk); 715extern void ext2fs_free_blocks_count_add(struct ext2_super_block *super, 716 blk64_t blk); 717/* Block group descriptor accessor functions */ 718extern struct ext2_group_desc *ext2fs_group_desc(ext2_filsys fs, 719 struct ext2_group_desc *gdp, 720 dgrp_t group); 721extern blk64_t ext2fs_block_bitmap_loc(ext2_filsys fs, dgrp_t group); 722extern void ext2fs_block_bitmap_loc_set(ext2_filsys fs, dgrp_t group, 723 blk64_t blk); 724extern blk64_t ext2fs_inode_bitmap_loc(ext2_filsys fs, dgrp_t group); 725extern void ext2fs_inode_bitmap_loc_set(ext2_filsys fs, dgrp_t group, 726 blk64_t blk); 727extern blk64_t ext2fs_inode_table_loc(ext2_filsys fs, dgrp_t group); 728extern void ext2fs_inode_table_loc_set(ext2_filsys fs, dgrp_t group, 729 blk64_t blk); 730extern blk64_t ext2fs_bg_free_blocks_count(ext2_filsys fs, dgrp_t group); 731extern void ext2fs_bg_free_blocks_count_set(ext2_filsys fs, dgrp_t group, 732 blk64_t blk); 733extern blk64_t ext2fs_bg_free_inodes_count(ext2_filsys fs, dgrp_t group); 734extern void ext2fs_bg_free_inodes_count_set(ext2_filsys fs, dgrp_t group, 735 blk64_t blk); 736extern blk64_t ext2fs_bg_used_dirs_count(ext2_filsys fs, dgrp_t group); 737extern void ext2fs_bg_used_dirs_count_set(ext2_filsys fs, dgrp_t group, 738 blk64_t blk); 739extern blk64_t ext2fs_bg_itable_unused(ext2_filsys fs, dgrp_t group); 740extern void ext2fs_bg_itable_unused_set(ext2_filsys fs, dgrp_t group, 741 blk64_t blk); 742extern __u16 ext2fs_bg_flags(ext2_filsys fs, dgrp_t group); 743extern void ext2fs_bg_flags_set(ext2_filsys fs, dgrp_t group, __u16 bg_flags); 744extern void ext2fs_bg_flags_clear(ext2_filsys fs, dgrp_t group, 745 __u16 bg_flags); 746extern int ext2fs_bg_flag_test(ext2_filsys fs, dgrp_t group, __u16 bg_flag); 747extern void ext2fs_bg_flag_set(ext2_filsys fs, dgrp_t group, __u16 bg_flag); 748extern void ext2fs_bg_flag_clear(ext2_filsys fs, dgrp_t group, __u16 bg_flag); 749extern __u16 ext2fs_bg_checksum(ext2_filsys fs, dgrp_t group); 750extern void ext2fs_bg_checksum_set(ext2_filsys fs, dgrp_t group, __u16 checksum); 751extern blk64_t ext2fs_file_acl_block(const struct ext2_inode *inode); 752extern void ext2fs_file_acl_block_set(struct ext2_inode *inode, blk64_t blk); 753 754/* block.c */ 755extern errcode_t ext2fs_block_iterate(ext2_filsys fs, 756 ext2_ino_t ino, 757 int flags, 758 char *block_buf, 759 int (*func)(ext2_filsys fs, 760 blk_t *blocknr, 761 int blockcnt, 762 void *priv_data), 763 void *priv_data); 764errcode_t ext2fs_block_iterate2(ext2_filsys fs, 765 ext2_ino_t ino, 766 int flags, 767 char *block_buf, 768 int (*func)(ext2_filsys fs, 769 blk_t *blocknr, 770 e2_blkcnt_t blockcnt, 771 blk_t ref_blk, 772 int ref_offset, 773 void *priv_data), 774 void *priv_data); 775 776/* bmap.c */ 777extern errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino, 778 struct ext2_inode *inode, 779 char *block_buf, int bmap_flags, 780 blk_t block, blk_t *phys_blk); 781extern errcode_t ext2fs_bmap2(ext2_filsys fs, ext2_ino_t ino, 782 struct ext2_inode *inode, 783 char *block_buf, int bmap_flags, blk64_t block, 784 int *ret_flags, blk64_t *phys_blk); 785 786#if 0 787/* bmove.c */ 788extern errcode_t ext2fs_move_blocks(ext2_filsys fs, 789 ext2fs_block_bitmap reserve, 790 ext2fs_block_bitmap alloc_map, 791 int flags); 792#endif 793 794/* check_desc.c */ 795extern errcode_t ext2fs_check_desc(ext2_filsys fs); 796 797/* closefs.c */ 798extern errcode_t ext2fs_close(ext2_filsys fs); 799extern errcode_t ext2fs_flush(ext2_filsys fs); 800extern int ext2fs_bg_has_super(ext2_filsys fs, int group_block); 801extern errcode_t ext2fs_super_and_bgd_loc2(ext2_filsys fs, 802 dgrp_t group, 803 blk64_t *ret_super_blk, 804 blk64_t *ret_old_desc_blk, 805 blk64_t *ret_new_desc_blk, 806 blk_t *ret_used_blks); 807extern int ext2fs_super_and_bgd_loc(ext2_filsys fs, 808 dgrp_t group, 809 blk_t *ret_super_blk, 810 blk_t *ret_old_desc_blk, 811 blk_t *ret_new_desc_blk, 812 int *ret_meta_bg); 813extern void ext2fs_update_dynamic_rev(ext2_filsys fs); 814 815/* csum.c */ 816extern void ext2fs_group_desc_csum_set(ext2_filsys fs, dgrp_t group); 817extern int ext2fs_group_desc_csum_verify(ext2_filsys fs, dgrp_t group); 818extern errcode_t ext2fs_set_gdt_csum(ext2_filsys fs); 819 820/* dblist.c */ 821 822extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs); 823extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist); 824extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ext2_ino_t ino, 825 blk_t blk, int blockcnt); 826extern void ext2fs_dblist_sort(ext2_dblist dblist, 827 EXT2_QSORT_TYPE (*sortfunc)(const void *, 828 const void *)); 829extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist, 830 int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info, 831 void *priv_data), 832 void *priv_data); 833extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ext2_ino_t ino, 834 blk_t blk, int blockcnt); 835extern errcode_t ext2fs_copy_dblist(ext2_dblist src, 836 ext2_dblist *dest); 837extern int ext2fs_dblist_count(ext2_dblist dblist); 838extern errcode_t ext2fs_dblist_get_last(ext2_dblist dblist, 839 struct ext2_db_entry **entry); 840extern errcode_t ext2fs_dblist_drop_last(ext2_dblist dblist); 841 842/* dblist_dir.c */ 843extern errcode_t 844 ext2fs_dblist_dir_iterate(ext2_dblist dblist, 845 int flags, 846 char *block_buf, 847 int (*func)(ext2_ino_t dir, 848 int entry, 849 struct ext2_dir_entry *dirent, 850 int offset, 851 int blocksize, 852 char *buf, 853 void *priv_data), 854 void *priv_data); 855 856/* dirblock.c */ 857extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block, 858 void *buf); 859extern errcode_t ext2fs_read_dir_block2(ext2_filsys fs, blk_t block, 860 void *buf, int flags); 861extern errcode_t ext2fs_read_dir_block3(ext2_filsys fs, blk64_t block, 862 void *buf, int flags); 863extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block, 864 void *buf); 865extern errcode_t ext2fs_write_dir_block2(ext2_filsys fs, blk_t block, 866 void *buf, int flags); 867extern errcode_t ext2fs_write_dir_block3(ext2_filsys fs, blk64_t block, 868 void *buf, int flags); 869 870/* dirhash.c */ 871extern errcode_t ext2fs_dirhash(int version, const char *name, int len, 872 const __u32 *seed, 873 ext2_dirhash_t *ret_hash, 874 ext2_dirhash_t *ret_minor_hash); 875 876 877/* dir_iterate.c */ 878extern errcode_t ext2fs_get_rec_len(ext2_filsys fs, 879 struct ext2_dir_entry *dirent, 880 unsigned int *rec_len); 881extern errcode_t ext2fs_set_rec_len(ext2_filsys fs, 882 unsigned int len, 883 struct ext2_dir_entry *dirent); 884extern errcode_t ext2fs_dir_iterate(ext2_filsys fs, 885 ext2_ino_t dir, 886 int flags, 887 char *block_buf, 888 int (*func)(struct ext2_dir_entry *dirent, 889 int offset, 890 int blocksize, 891 char *buf, 892 void *priv_data), 893 void *priv_data); 894extern errcode_t ext2fs_dir_iterate2(ext2_filsys fs, 895 ext2_ino_t dir, 896 int flags, 897 char *block_buf, 898 int (*func)(ext2_ino_t dir, 899 int entry, 900 struct ext2_dir_entry *dirent, 901 int offset, 902 int blocksize, 903 char *buf, 904 void *priv_data), 905 void *priv_data); 906 907/* dupfs.c */ 908extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest); 909 910/* expanddir.c */ 911extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir); 912 913/* ext_attr.c */ 914extern __u32 ext2fs_ext_attr_hash_entry(struct ext2_ext_attr_entry *entry, 915 void *data); 916extern errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf); 917extern errcode_t ext2fs_read_ext_attr2(ext2_filsys fs, blk64_t block, 918 void *buf); 919extern errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block, 920 void *buf); 921extern errcode_t ext2fs_write_ext_attr2(ext2_filsys fs, blk64_t block, 922 void *buf); 923extern errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk, 924 char *block_buf, 925 int adjust, __u32 *newcount); 926extern errcode_t ext2fs_adjust_ea_refcount2(ext2_filsys fs, blk64_t blk, 927 char *block_buf, 928 int adjust, __u32 *newcount); 929 930/* extent.c */ 931extern errcode_t ext2fs_extent_header_verify(void *ptr, int size); 932extern errcode_t ext2fs_extent_open(ext2_filsys fs, ext2_ino_t ino, 933 ext2_extent_handle_t *handle); 934extern errcode_t ext2fs_extent_open2(ext2_filsys fs, ext2_ino_t ino, 935 struct ext2_inode *inode, 936 ext2_extent_handle_t *ret_handle); 937extern void ext2fs_extent_free(ext2_extent_handle_t handle); 938extern errcode_t ext2fs_extent_get(ext2_extent_handle_t handle, 939 int flags, struct ext2fs_extent *extent); 940extern errcode_t ext2fs_extent_replace(ext2_extent_handle_t handle, int flags, 941 struct ext2fs_extent *extent); 942extern errcode_t ext2fs_extent_insert(ext2_extent_handle_t handle, int flags, 943 struct ext2fs_extent *extent); 944extern errcode_t ext2fs_extent_set_bmap(ext2_extent_handle_t handle, 945 blk64_t logical, blk64_t physical, 946 int flags); 947extern errcode_t ext2fs_extent_delete(ext2_extent_handle_t handle, int flags); 948extern errcode_t ext2fs_extent_get_info(ext2_extent_handle_t handle, 949 struct ext2_extent_info *info); 950extern errcode_t ext2fs_extent_goto(ext2_extent_handle_t handle, 951 blk64_t blk); 952 953/* fileio.c */ 954extern errcode_t ext2fs_file_open2(ext2_filsys fs, ext2_ino_t ino, 955 struct ext2_inode *inode, 956 int flags, ext2_file_t *ret); 957extern errcode_t ext2fs_file_open(ext2_filsys fs, ext2_ino_t ino, 958 int flags, ext2_file_t *ret); 959extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file); 960extern errcode_t ext2fs_file_close(ext2_file_t file); 961extern errcode_t ext2fs_file_flush(ext2_file_t file); 962extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf, 963 unsigned int wanted, unsigned int *got); 964extern errcode_t ext2fs_file_write(ext2_file_t file, const void *buf, 965 unsigned int nbytes, unsigned int *written); 966extern errcode_t ext2fs_file_llseek(ext2_file_t file, __u64 offset, 967 int whence, __u64 *ret_pos); 968extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset, 969 int whence, ext2_off_t *ret_pos); 970errcode_t ext2fs_file_get_lsize(ext2_file_t file, __u64 *ret_size); 971extern ext2_off_t ext2fs_file_get_size(ext2_file_t file); 972extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size); 973 974/* finddev.c */ 975extern char *ext2fs_find_block_device(dev_t device); 976 977/* flushb.c */ 978extern errcode_t ext2fs_sync_device(int fd, int flushb); 979 980/* freefs.c */ 981extern void ext2fs_free(ext2_filsys fs); 982extern void ext2fs_free_dblist(ext2_dblist dblist); 983extern void ext2fs_badblocks_list_free(ext2_badblocks_list bb); 984extern void ext2fs_u32_list_free(ext2_u32_list bb); 985 986/* gen_bitmap.c */ 987extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap); 988extern errcode_t ext2fs_make_generic_bitmap(errcode_t magic, ext2_filsys fs, 989 __u32 start, __u32 end, 990 __u32 real_end, 991 const char *descr, char *init_map, 992 ext2fs_generic_bitmap *ret); 993extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start, 994 __u32 end, 995 __u32 real_end, 996 const char *descr, 997 ext2fs_generic_bitmap *ret); 998extern errcode_t ext2fs_copy_generic_bitmap(ext2fs_generic_bitmap src, 999 ext2fs_generic_bitmap *dest); 1000extern void ext2fs_clear_generic_bitmap(ext2fs_generic_bitmap bitmap); 1001extern errcode_t ext2fs_fudge_generic_bitmap_end(ext2fs_inode_bitmap bitmap, 1002 errcode_t magic, 1003 errcode_t neq, 1004 ext2_ino_t end, 1005 ext2_ino_t *oend); 1006extern void ext2fs_set_generic_bitmap_padding(ext2fs_generic_bitmap map); 1007extern errcode_t ext2fs_resize_generic_bitmap(errcode_t magic, 1008 __u32 new_end, 1009 __u32 new_real_end, 1010 ext2fs_generic_bitmap bmap); 1011extern errcode_t ext2fs_compare_generic_bitmap(errcode_t magic, errcode_t neq, 1012 ext2fs_generic_bitmap bm1, 1013 ext2fs_generic_bitmap bm2); 1014extern errcode_t ext2fs_get_generic_bitmap_range(ext2fs_generic_bitmap bmap, 1015 errcode_t magic, 1016 __u32 start, __u32 num, 1017 void *out); 1018extern errcode_t ext2fs_set_generic_bitmap_range(ext2fs_generic_bitmap bmap, 1019 errcode_t magic, 1020 __u32 start, __u32 num, 1021 void *in); 1022 1023/* getsize.c */ 1024extern errcode_t ext2fs_get_device_size(const char *file, int blocksize, 1025 blk_t *retblocks); 1026extern errcode_t ext2fs_get_device_size2(const char *file, int blocksize, 1027 blk64_t *retblocks); 1028 1029/* getsectsize.c */ 1030errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize); 1031 1032/* i_block.c */ 1033errcode_t ext2fs_iblk_add_blocks(ext2_filsys fs, struct ext2_inode *inode, 1034 blk64_t num_blocks); 1035errcode_t ext2fs_iblk_sub_blocks(ext2_filsys fs, struct ext2_inode *inode, 1036 blk64_t num_blocks); 1037errcode_t ext2fs_iblk_set(ext2_filsys fs, struct ext2_inode *inode, blk64_t b); 1038 1039/* imager.c */ 1040extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags); 1041extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags); 1042extern errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd, int flags); 1043extern errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd, int flags); 1044extern errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags); 1045extern errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags); 1046 1047/* ind_block.c */ 1048errcode_t ext2fs_read_ind_block(ext2_filsys fs, blk_t blk, void *buf); 1049errcode_t ext2fs_write_ind_block(ext2_filsys fs, blk_t blk, void *buf); 1050 1051/* initialize.c */ 1052extern errcode_t ext2fs_initialize(const char *name, int flags, 1053 struct ext2_super_block *param, 1054 io_manager manager, ext2_filsys *ret_fs); 1055 1056/* icount.c */ 1057extern void ext2fs_free_icount(ext2_icount_t icount); 1058extern errcode_t ext2fs_create_icount_tdb(ext2_filsys fs, char *tdb_dir, 1059 int flags, ext2_icount_t *ret); 1060extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags, 1061 unsigned int size, 1062 ext2_icount_t hint, ext2_icount_t *ret); 1063extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags, 1064 unsigned int size, 1065 ext2_icount_t *ret); 1066extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ext2_ino_t ino, 1067 __u16 *ret); 1068extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ext2_ino_t ino, 1069 __u16 *ret); 1070extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ext2_ino_t ino, 1071 __u16 *ret); 1072extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ext2_ino_t ino, 1073 __u16 count); 1074extern ext2_ino_t ext2fs_get_icount_size(ext2_icount_t icount); 1075errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *); 1076 1077/* inode.c */ 1078extern errcode_t ext2fs_flush_icache(ext2_filsys fs); 1079extern errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan, 1080 ext2_ino_t *ino, 1081 struct ext2_inode *inode, 1082 int bufsize); 1083extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks, 1084 ext2_inode_scan *ret_scan); 1085extern void ext2fs_close_inode_scan(ext2_inode_scan scan); 1086extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino, 1087 struct ext2_inode *inode); 1088extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan, 1089 int group); 1090extern void ext2fs_set_inode_callback 1091 (ext2_inode_scan scan, 1092 errcode_t (*done_group)(ext2_filsys fs, 1093 ext2_inode_scan scan, 1094 dgrp_t group, 1095 void * priv_data), 1096 void *done_group_data); 1097extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags, 1098 int clear_flags); 1099extern errcode_t ext2fs_read_inode_full(ext2_filsys fs, ext2_ino_t ino, 1100 struct ext2_inode * inode, 1101 int bufsize); 1102extern errcode_t ext2fs_read_inode (ext2_filsys fs, ext2_ino_t ino, 1103 struct ext2_inode * inode); 1104extern errcode_t ext2fs_write_inode_full(ext2_filsys fs, ext2_ino_t ino, 1105 struct ext2_inode * inode, 1106 int bufsize); 1107extern errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino, 1108 struct ext2_inode * inode); 1109extern errcode_t ext2fs_write_new_inode(ext2_filsys fs, ext2_ino_t ino, 1110 struct ext2_inode * inode); 1111extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); 1112extern errcode_t ext2fs_check_directory(ext2_filsys fs, ext2_ino_t ino); 1113 1114/* inode_io.c */ 1115extern io_manager inode_io_manager; 1116extern errcode_t ext2fs_inode_io_intern(ext2_filsys fs, ext2_ino_t ino, 1117 char **name); 1118extern errcode_t ext2fs_inode_io_intern2(ext2_filsys fs, ext2_ino_t ino, 1119 struct ext2_inode *inode, 1120 char **name); 1121 1122/* ismounted.c */ 1123extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags); 1124extern errcode_t ext2fs_check_mount_point(const char *device, int *mount_flags, 1125 char *mtpt, int mtlen); 1126 1127/* namei.c */ 1128extern errcode_t ext2fs_lookup(ext2_filsys fs, ext2_ino_t dir, const char *name, 1129 int namelen, char *buf, ext2_ino_t *inode); 1130extern errcode_t ext2fs_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1131 const char *name, ext2_ino_t *inode); 1132errcode_t ext2fs_namei_follow(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1133 const char *name, ext2_ino_t *inode); 1134extern errcode_t ext2fs_follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1135 ext2_ino_t inode, ext2_ino_t *res_inode); 1136 1137/* native.c */ 1138int ext2fs_native_flag(void); 1139 1140/* newdir.c */ 1141extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino, 1142 ext2_ino_t parent_ino, char **block); 1143 1144/* mkdir.c */ 1145extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum, 1146 const char *name); 1147 1148/* mkjournal.c */ 1149extern errcode_t ext2fs_zero_blocks(ext2_filsys fs, blk_t blk, int num, 1150 blk_t *ret_blk, int *ret_count); 1151extern errcode_t ext2fs_create_journal_superblock(ext2_filsys fs, 1152 __u32 size, int flags, 1153 char **ret_jsb); 1154extern errcode_t ext2fs_add_journal_device(ext2_filsys fs, 1155 ext2_filsys journal_dev); 1156extern errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t size, 1157 int flags); 1158extern int ext2fs_default_journal_size(__u64 blocks); 1159 1160/* openfs.c */ 1161extern errcode_t ext2fs_open(const char *name, int flags, int superblock, 1162 unsigned int block_size, io_manager manager, 1163 ext2_filsys *ret_fs); 1164extern errcode_t ext2fs_open2(const char *name, const char *io_options, 1165 int flags, int superblock, 1166 unsigned int block_size, io_manager manager, 1167 ext2_filsys *ret_fs); 1168extern blk64_t ext2fs_descriptor_block_loc2(ext2_filsys fs, 1169 blk64_t group_block, dgrp_t i); 1170extern blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block, 1171 dgrp_t i); 1172errcode_t ext2fs_get_data_io(ext2_filsys fs, io_channel *old_io); 1173errcode_t ext2fs_set_data_io(ext2_filsys fs, io_channel new_io); 1174errcode_t ext2fs_rewrite_to_io(ext2_filsys fs, io_channel new_io); 1175 1176/* get_pathname.c */ 1177extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino, 1178 char **name); 1179 1180/* link.c */ 1181errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name, 1182 ext2_ino_t ino, int flags); 1183errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir, const char *name, 1184 ext2_ino_t ino, int flags); 1185 1186/* read_bb.c */ 1187extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs, 1188 ext2_badblocks_list *bb_list); 1189 1190/* read_bb_file.c */ 1191extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f, 1192 ext2_badblocks_list *bb_list, 1193 void *priv_data, 1194 void (*invalid)(ext2_filsys fs, 1195 blk_t blk, 1196 char *badstr, 1197 void *priv_data)); 1198extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f, 1199 ext2_badblocks_list *bb_list, 1200 void (*invalid)(ext2_filsys fs, 1201 blk_t blk)); 1202 1203/* res_gdt.c */ 1204extern errcode_t ext2fs_create_resize_inode(ext2_filsys fs); 1205 1206/* swapfs.c */ 1207extern void ext2fs_swap_ext_attr(char *to, char *from, int bufsize, 1208 int has_header); 1209extern void ext2fs_swap_ext_attr_header(struct ext2_ext_attr_header *to_header, 1210 struct ext2_ext_attr_header *from_hdr); 1211extern void ext2fs_swap_ext_attr_entry(struct ext2_ext_attr_entry *to_entry, 1212 struct ext2_ext_attr_entry *from_entry); 1213extern void ext2fs_swap_super(struct ext2_super_block * super); 1214extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp); 1215extern void ext2fs_swap_inode_full(ext2_filsys fs, struct ext2_inode_large *t, 1216 struct ext2_inode_large *f, int hostorder, 1217 int bufsize); 1218extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t, 1219 struct ext2_inode *f, int hostorder); 1220 1221/* valid_blk.c */ 1222extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode); 1223 1224/* version.c */ 1225extern int ext2fs_parse_version_string(const char *ver_string); 1226extern int ext2fs_get_library_version(const char **ver_string, 1227 const char **date_string); 1228 1229/* write_bb_file.c */ 1230extern errcode_t ext2fs_write_bb_FILE(ext2_badblocks_list bb_list, 1231 unsigned int flags, 1232 FILE *f); 1233 1234 1235/* inline functions */ 1236extern errcode_t ext2fs_get_mem(unsigned long size, void *ptr); 1237extern errcode_t ext2fs_get_array(unsigned long count, unsigned long size, void *ptr); 1238extern errcode_t ext2fs_free_mem(void *ptr); 1239extern errcode_t ext2fs_resize_mem(unsigned long old_size, 1240 unsigned long size, void *ptr); 1241extern void ext2fs_mark_super_dirty(ext2_filsys fs); 1242extern void ext2fs_mark_changed(ext2_filsys fs); 1243extern int ext2fs_test_changed(ext2_filsys fs); 1244extern void ext2fs_mark_valid(ext2_filsys fs); 1245extern void ext2fs_unmark_valid(ext2_filsys fs); 1246extern int ext2fs_test_valid(ext2_filsys fs); 1247extern void ext2fs_mark_ib_dirty(ext2_filsys fs); 1248extern void ext2fs_mark_bb_dirty(ext2_filsys fs); 1249extern int ext2fs_test_ib_dirty(ext2_filsys fs); 1250extern int ext2fs_test_bb_dirty(ext2_filsys fs); 1251extern int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk); 1252extern int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino); 1253extern blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group); 1254extern blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group); 1255extern blk_t ext2fs_inode_data_blocks(ext2_filsys fs, 1256 struct ext2_inode *inode); 1257extern unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b); 1258extern __u64 ext2fs_div64_ceil(__u64 a, __u64 b); 1259 1260/* 1261 * The actual inlined functions definitions themselves... 1262 * 1263 * If NO_INLINE_FUNCS is defined, then we won't try to do inline 1264 * functions at all! 1265 */ 1266#if (defined(INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS)) 1267#ifdef INCLUDE_INLINE_FUNCS 1268#define _INLINE_ extern 1269#else 1270#ifdef __GNUC__ 1271#define _INLINE_ extern __inline__ 1272#else /* For Watcom C */ 1273#define _INLINE_ extern inline 1274#endif 1275#endif 1276 1277#ifndef EXT2_CUSTOM_MEMORY_ROUTINES 1278#include <string.h> 1279/* 1280 * Allocate memory 1281 */ 1282_INLINE_ errcode_t ext2fs_get_mem(unsigned long size, void *ptr) 1283{ 1284 void *pp; 1285 1286 pp = malloc(size); 1287 if (!pp) 1288 return EXT2_ET_NO_MEMORY; 1289 memcpy(ptr, &pp, sizeof (pp)); 1290 return 0; 1291} 1292 1293_INLINE_ errcode_t ext2fs_get_array(unsigned long count, unsigned long size, void *ptr) 1294{ 1295 if (count && (-1UL)/count<size) 1296 return EXT2_ET_NO_MEMORY; //maybe define EXT2_ET_OVERFLOW ? 1297 return ext2fs_get_mem(count*size, ptr); 1298} 1299 1300/* 1301 * Free memory 1302 */ 1303_INLINE_ errcode_t ext2fs_free_mem(void *ptr) 1304{ 1305 void *p; 1306 1307 memcpy(&p, ptr, sizeof(p)); 1308 free(p); 1309 p = 0; 1310 memcpy(ptr, &p, sizeof(p)); 1311 return 0; 1312} 1313 1314/* 1315 * Resize memory 1316 */ 1317_INLINE_ errcode_t ext2fs_resize_mem(unsigned long EXT2FS_ATTR((unused)) old_size, 1318 unsigned long size, void *ptr) 1319{ 1320 void *p; 1321 1322 /* Use "memcpy" for pointer assignments here to avoid problems 1323 * with C99 strict type aliasing rules. */ 1324 memcpy(&p, ptr, sizeof(p)); 1325 p = realloc(p, size); 1326 if (!p) 1327 return EXT2_ET_NO_MEMORY; 1328 memcpy(ptr, &p, sizeof(p)); 1329 return 0; 1330} 1331#endif /* Custom memory routines */ 1332 1333/* 1334 * Mark a filesystem superblock as dirty 1335 */ 1336_INLINE_ void ext2fs_mark_super_dirty(ext2_filsys fs) 1337{ 1338 fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_CHANGED; 1339} 1340 1341/* 1342 * Mark a filesystem as changed 1343 */ 1344_INLINE_ void ext2fs_mark_changed(ext2_filsys fs) 1345{ 1346 fs->flags |= EXT2_FLAG_CHANGED; 1347} 1348 1349/* 1350 * Check to see if a filesystem has changed 1351 */ 1352_INLINE_ int ext2fs_test_changed(ext2_filsys fs) 1353{ 1354 return (fs->flags & EXT2_FLAG_CHANGED); 1355} 1356 1357/* 1358 * Mark a filesystem as valid 1359 */ 1360_INLINE_ void ext2fs_mark_valid(ext2_filsys fs) 1361{ 1362 fs->flags |= EXT2_FLAG_VALID; 1363} 1364 1365/* 1366 * Mark a filesystem as NOT valid 1367 */ 1368_INLINE_ void ext2fs_unmark_valid(ext2_filsys fs) 1369{ 1370 fs->flags &= ~EXT2_FLAG_VALID; 1371} 1372 1373/* 1374 * Check to see if a filesystem is valid 1375 */ 1376_INLINE_ int ext2fs_test_valid(ext2_filsys fs) 1377{ 1378 return (fs->flags & EXT2_FLAG_VALID); 1379} 1380 1381/* 1382 * Mark the inode bitmap as dirty 1383 */ 1384_INLINE_ void ext2fs_mark_ib_dirty(ext2_filsys fs) 1385{ 1386 fs->flags |= EXT2_FLAG_IB_DIRTY | EXT2_FLAG_CHANGED; 1387} 1388 1389/* 1390 * Mark the block bitmap as dirty 1391 */ 1392_INLINE_ void ext2fs_mark_bb_dirty(ext2_filsys fs) 1393{ 1394 fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_CHANGED; 1395} 1396 1397/* 1398 * Check to see if a filesystem's inode bitmap is dirty 1399 */ 1400_INLINE_ int ext2fs_test_ib_dirty(ext2_filsys fs) 1401{ 1402 return (fs->flags & EXT2_FLAG_IB_DIRTY); 1403} 1404 1405/* 1406 * Check to see if a filesystem's block bitmap is dirty 1407 */ 1408_INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs) 1409{ 1410 return (fs->flags & EXT2_FLAG_BB_DIRTY); 1411} 1412 1413/* 1414 * Return the group # of a block 1415 */ 1416_INLINE_ int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk) 1417{ 1418 return ext2fs_group_of_blk2(fs, blk); 1419} 1420/* 1421 * Return the group # of an inode number 1422 */ 1423_INLINE_ int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino) 1424{ 1425 return (ino - 1) / fs->super->s_inodes_per_group; 1426} 1427 1428/* 1429 * Return the first block (inclusive) in a group 1430 */ 1431_INLINE_ blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group) 1432{ 1433 return ext2fs_group_first_block2(fs, group); 1434} 1435 1436/* 1437 * Return the last block (inclusive) in a group 1438 */ 1439_INLINE_ blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group) 1440{ 1441 return ext2fs_group_last_block2(fs, group); 1442} 1443 1444_INLINE_ blk_t ext2fs_inode_data_blocks(ext2_filsys fs, 1445 struct ext2_inode *inode) 1446{ 1447 return ext2fs_inode_data_blocks2(fs, inode); 1448} 1449 1450/* 1451 * This is an efficient, overflow safe way of calculating ceil((1.0 * a) / b) 1452 */ 1453_INLINE_ unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b) 1454{ 1455 if (!a) 1456 return 0; 1457 return ((a - 1) / b) + 1; 1458} 1459 1460_INLINE_ __u64 ext2fs_div64_ceil(__u64 a, __u64 b) 1461{ 1462 if (!a) 1463 return 0; 1464 return ((a - 1) / b) + 1; 1465} 1466 1467#undef _INLINE_ 1468#endif 1469 1470#ifdef __cplusplus 1471} 1472#endif 1473 1474#endif /* _EXT2FS_EXT2FS_H */ 1475