ext2fs.h revision c802ad9ed6c6756dfb65d31f0f559e90df3825d5
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 __s64 e2_blkcnt_t; 72typedef __u32 ext2_dirhash_t; 73 74#if EXT2_FLAT_INCLUDES 75#include "com_err.h" 76#include "ext2_io.h" 77#include "ext2_err.h" 78#include "ext2_ext_attr.h" 79#else 80#include <et/com_err.h> 81#include <ext2fs/ext2_io.h> 82#include <ext2fs/ext2_err.h> 83#include <ext2fs/ext2_ext_attr.h> 84#endif 85 86/* 87 * Portability help for Microsoft Visual C++ 88 */ 89#ifdef _MSC_VER 90#define EXT2_QSORT_TYPE int __cdecl 91#else 92#define EXT2_QSORT_TYPE int 93#endif 94 95typedef struct struct_ext2_filsys *ext2_filsys; 96 97#define EXT2FS_MARK_ERROR 0 98#define EXT2FS_UNMARK_ERROR 1 99#define EXT2FS_TEST_ERROR 2 100 101typedef struct ext2fs_struct_generic_bitmap *ext2fs_generic_bitmap; 102typedef struct ext2fs_struct_generic_bitmap *ext2fs_inode_bitmap; 103typedef struct ext2fs_struct_generic_bitmap *ext2fs_block_bitmap; 104 105#define EXT2_FIRST_INODE(s) EXT2_FIRST_INO(s) 106 107 108/* 109 * Badblocks list definitions 110 */ 111 112typedef struct ext2_struct_u32_list *ext2_badblocks_list; 113typedef struct ext2_struct_u32_iterate *ext2_badblocks_iterate; 114 115typedef struct ext2_struct_u32_list *ext2_u32_list; 116typedef struct ext2_struct_u32_iterate *ext2_u32_iterate; 117 118/* old */ 119typedef struct ext2_struct_u32_list *badblocks_list; 120typedef struct ext2_struct_u32_iterate *badblocks_iterate; 121 122#define BADBLOCKS_FLAG_DIRTY 1 123 124/* 125 * ext2_dblist structure and abstractions (see dblist.c) 126 */ 127struct ext2_db_entry { 128 ext2_ino_t ino; 129 blk_t blk; 130 int blockcnt; 131}; 132 133typedef struct ext2_struct_dblist *ext2_dblist; 134 135#define DBLIST_ABORT 1 136 137/* 138 * ext2_fileio definitions 139 */ 140 141#define EXT2_FILE_WRITE 0x0001 142#define EXT2_FILE_CREATE 0x0002 143 144#define EXT2_FILE_MASK 0x00FF 145 146#define EXT2_FILE_BUF_DIRTY 0x4000 147#define EXT2_FILE_BUF_VALID 0x2000 148 149typedef struct ext2_file *ext2_file_t; 150 151#define EXT2_SEEK_SET 0 152#define EXT2_SEEK_CUR 1 153#define EXT2_SEEK_END 2 154 155/* 156 * Flags for the ext2_filsys structure and for ext2fs_open() 157 */ 158#define EXT2_FLAG_RW 0x01 159#define EXT2_FLAG_CHANGED 0x02 160#define EXT2_FLAG_DIRTY 0x04 161#define EXT2_FLAG_VALID 0x08 162#define EXT2_FLAG_IB_DIRTY 0x10 163#define EXT2_FLAG_BB_DIRTY 0x20 164#define EXT2_FLAG_SWAP_BYTES 0x40 165#define EXT2_FLAG_SWAP_BYTES_READ 0x80 166#define EXT2_FLAG_SWAP_BYTES_WRITE 0x100 167#define EXT2_FLAG_MASTER_SB_ONLY 0x200 168#define EXT2_FLAG_FORCE 0x400 169#define EXT2_FLAG_SUPER_ONLY 0x800 170#define EXT2_FLAG_JOURNAL_DEV_OK 0x1000 171#define EXT2_FLAG_IMAGE_FILE 0x2000 172#define EXT2_FLAG_EXCLUSIVE 0x4000 173#define EXT2_FLAG_SOFTSUPP_FEATURES 0x8000 174#define EXT2_FLAG_NOFREE_ON_ERROR 0x10000 175 176/* 177 * Special flag in the ext2 inode i_flag field that means that this is 178 * a new inode. (So that ext2_write_inode() can clear extra fields.) 179 */ 180#define EXT2_NEW_INODE_FL 0x80000000 181 182/* 183 * Flags for mkjournal 184 * 185 * EXT2_MKJOURNAL_V1_SUPER Make a (deprecated) V1 journal superblock 186 */ 187#define EXT2_MKJOURNAL_V1_SUPER 0x0000001 188 189struct struct_ext2_filsys { 190 errcode_t magic; 191 io_channel io; 192 int flags; 193 char * device_name; 194 struct ext2_super_block * super; 195 unsigned int blocksize; 196 int fragsize; 197 dgrp_t group_desc_count; 198 unsigned long desc_blocks; 199 struct ext2_group_desc * group_desc; 200 int inode_blocks_per_group; 201 ext2fs_inode_bitmap inode_map; 202 ext2fs_block_bitmap block_map; 203 errcode_t (*get_blocks)(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); 204 errcode_t (*check_directory)(ext2_filsys fs, ext2_ino_t ino); 205 errcode_t (*write_bitmaps)(ext2_filsys fs); 206 errcode_t (*read_inode)(ext2_filsys fs, ext2_ino_t ino, 207 struct ext2_inode *inode); 208 errcode_t (*write_inode)(ext2_filsys fs, ext2_ino_t ino, 209 struct ext2_inode *inode); 210 ext2_badblocks_list badblocks; 211 ext2_dblist dblist; 212 __u32 stride; /* for mke2fs */ 213 struct ext2_super_block * orig_super; 214 struct ext2_image_hdr * image_header; 215 __u32 umask; 216 time_t now; 217 /* 218 * Reserved for future expansion 219 */ 220 __u32 reserved[7]; 221 222 /* 223 * Reserved for the use of the calling application. 224 */ 225 void * priv_data; 226 227 /* 228 * Inode cache 229 */ 230 struct ext2_inode_cache *icache; 231 io_channel image_io; 232}; 233 234#if EXT2_FLAT_INCLUDES 235#include "e2_bitops.h" 236#else 237#include <ext2fs/bitops.h> 238#endif 239 240/* 241 * Return flags for the block iterator functions 242 */ 243#define BLOCK_CHANGED 1 244#define BLOCK_ABORT 2 245#define BLOCK_ERROR 4 246 247/* 248 * Block interate flags 249 * 250 * BLOCK_FLAG_APPEND, or BLOCK_FLAG_HOLE, indicates that the interator 251 * function should be called on blocks where the block number is zero. 252 * This is used by ext2fs_expand_dir() to be able to add a new block 253 * to an inode. It can also be used for programs that want to be able 254 * to deal with files that contain "holes". 255 * 256 * BLOCK_FLAG_DEPTH_TRAVERSE indicates that the iterator function for 257 * the indirect, doubly indirect, etc. blocks should be called after 258 * all of the blocks containined in the indirect blocks are processed. 259 * This is useful if you are going to be deallocating blocks from an 260 * inode. 261 * 262 * BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be 263 * called for data blocks only. 264 * 265 * BLOCK_FLAG_READ_ONLY is a promise by the caller that it will not 266 * modify returned block number. 267 * 268 * BLOCK_FLAG_NO_LARGE is for internal use only. It informs 269 * ext2fs_block_iterate2 that large files won't be accepted. 270 */ 271#define BLOCK_FLAG_APPEND 1 272#define BLOCK_FLAG_HOLE 1 273#define BLOCK_FLAG_DEPTH_TRAVERSE 2 274#define BLOCK_FLAG_DATA_ONLY 4 275#define BLOCK_FLAG_READ_ONLY 8 276 277#define BLOCK_FLAG_NO_LARGE 0x1000 278 279/* 280 * Magic "block count" return values for the block iterator function. 281 */ 282#define BLOCK_COUNT_IND (-1) 283#define BLOCK_COUNT_DIND (-2) 284#define BLOCK_COUNT_TIND (-3) 285#define BLOCK_COUNT_TRANSLATOR (-4) 286 287#if 0 288/* 289 * Flags for ext2fs_move_blocks 290 */ 291#define EXT2_BMOVE_GET_DBLIST 0x0001 292#define EXT2_BMOVE_DEBUG 0x0002 293#endif 294 295/* 296 * Generic (non-filesystem layout specific) extents structure 297 */ 298 299#define EXT2_EXTENT_FLAGS_LEAF 0x0001 300#define EXT2_EXTENT_FLAGS_UNINIT 0x0002 301#define EXT2_EXTENT_FLAGS_SECOND_VISIT 0x0004 302 303struct ext2fs_extent { 304 blk64_t e_pblk; /* first physical block */ 305 blk64_t e_lblk; /* first logical block extent covers */ 306 __u32 e_len; /* number of blocks covered by extent */ 307 __u32 e_flags; /* extent flags */ 308}; 309 310typedef struct ext2_extent_handle *ext2_extent_handle_t; 311typedef struct ext2_extent_path *ext2_extent_path_t; 312 313/* 314 * Flags used by ext2fs_extent_get() 315 */ 316#define EXT2_EXTENT_CURRENT 0x0000 317#define EXT2_EXTENT_MOVE_MASK 0x000F 318#define EXT2_EXTENT_ROOT 0x0001 319#define EXT2_EXTENT_LAST_LEAF 0x0002 320#define EXT2_EXTENT_FIRST_SIB 0x0003 321#define EXT2_EXTENT_LAST_SIB 0x0004 322#define EXT2_EXTENT_NEXT_SIB 0x0005 323#define EXT2_EXTENT_PREV_SIB 0x0006 324#define EXT2_EXTENT_NEXT_LEAF 0x0007 325#define EXT2_EXTENT_PREV_LEAF 0x0008 326#define EXT2_EXTENT_NEXT 0x0009 327#define EXT2_EXTENT_PREV 0x000A 328#define EXT2_EXTENT_UP 0x000B 329#define EXT2_EXTENT_DOWN 0x000C 330#define EXT2_EXTENT_DOWN_AND_LAST 0x000D 331 332/* 333 * Flags used by ext2fs_extent_insert() 334 */ 335#define EXT2_EXTENT_INSERT_AFTER 0x0001 /* insert after handle loc'n */ 336#define EXT2_EXTENT_INSERT_NOSPLIT 0x0002 /* insert may not cause split */ 337 338/* 339 * Flags used by ext2fs_extent_delete() 340 */ 341#define EXT2_EXTENT_DELETE_KEEP_EMPTY 0x001 /* keep node if last extnt gone */ 342 343/* 344 * Flags used by ext2fs_extent_set_bmap() 345 */ 346#define EXT2_EXTENT_SET_BMAP_UNINIT 0x0001 347 348/* 349 * Data structure returned by ext2fs_extent_get_info() 350 */ 351struct ext2_extent_info { 352 int curr_entry; 353 int curr_level; 354 int num_entries; 355 int max_entries; 356 int max_depth; 357 int bytes_avail; 358 blk64_t max_lblk; 359 blk64_t max_pblk; 360 __u32 max_len; 361 __u32 max_uninit_len; 362}; 363 364/* 365 * Flags for directory block reading and writing functions 366 */ 367#define EXT2_DIRBLOCK_V2_STRUCT 0x0001 368 369/* 370 * Return flags for the directory iterator functions 371 */ 372#define DIRENT_CHANGED 1 373#define DIRENT_ABORT 2 374#define DIRENT_ERROR 3 375 376/* 377 * Directory iterator flags 378 */ 379 380#define DIRENT_FLAG_INCLUDE_EMPTY 1 381#define DIRENT_FLAG_INCLUDE_REMOVED 2 382 383#define DIRENT_DOT_FILE 1 384#define DIRENT_DOT_DOT_FILE 2 385#define DIRENT_OTHER_FILE 3 386#define DIRENT_DELETED_FILE 4 387 388/* 389 * Inode scan definitions 390 */ 391typedef struct ext2_struct_inode_scan *ext2_inode_scan; 392 393/* 394 * ext2fs_scan flags 395 */ 396#define EXT2_SF_CHK_BADBLOCKS 0x0001 397#define EXT2_SF_BAD_INODE_BLK 0x0002 398#define EXT2_SF_BAD_EXTRA_BYTES 0x0004 399#define EXT2_SF_SKIP_MISSING_ITABLE 0x0008 400#define EXT2_SF_DO_LAZY 0x0010 401 402/* 403 * ext2fs_check_if_mounted flags 404 */ 405#define EXT2_MF_MOUNTED 1 406#define EXT2_MF_ISROOT 2 407#define EXT2_MF_READONLY 4 408#define EXT2_MF_SWAP 8 409#define EXT2_MF_BUSY 16 410 411/* 412 * Ext2/linux mode flags. We define them here so that we don't need 413 * to depend on the OS's sys/stat.h, since we may be compiling on a 414 * non-Linux system. 415 */ 416#define LINUX_S_IFMT 00170000 417#define LINUX_S_IFSOCK 0140000 418#define LINUX_S_IFLNK 0120000 419#define LINUX_S_IFREG 0100000 420#define LINUX_S_IFBLK 0060000 421#define LINUX_S_IFDIR 0040000 422#define LINUX_S_IFCHR 0020000 423#define LINUX_S_IFIFO 0010000 424#define LINUX_S_ISUID 0004000 425#define LINUX_S_ISGID 0002000 426#define LINUX_S_ISVTX 0001000 427 428#define LINUX_S_IRWXU 00700 429#define LINUX_S_IRUSR 00400 430#define LINUX_S_IWUSR 00200 431#define LINUX_S_IXUSR 00100 432 433#define LINUX_S_IRWXG 00070 434#define LINUX_S_IRGRP 00040 435#define LINUX_S_IWGRP 00020 436#define LINUX_S_IXGRP 00010 437 438#define LINUX_S_IRWXO 00007 439#define LINUX_S_IROTH 00004 440#define LINUX_S_IWOTH 00002 441#define LINUX_S_IXOTH 00001 442 443#define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK) 444#define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG) 445#define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR) 446#define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR) 447#define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK) 448#define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO) 449#define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK) 450 451/* 452 * ext2 size of an inode 453 */ 454#define EXT2_I_SIZE(i) ((i)->i_size | ((__u64) (i)->i_size_high << 32)) 455 456/* 457 * ext2_icount_t abstraction 458 */ 459#define EXT2_ICOUNT_OPT_INCREMENT 0x01 460 461typedef struct ext2_icount *ext2_icount_t; 462 463/* 464 * Flags for ext2fs_bmap 465 */ 466#define BMAP_ALLOC 0x0001 467#define BMAP_SET 0x0002 468 469/* 470 * Returned flags from ext2fs_bmap 471 */ 472#define BMAP_RET_UNINIT 0x0001 473 474/* 475 * Flags for imager.c functions 476 */ 477#define IMAGER_FLAG_INODEMAP 1 478#define IMAGER_FLAG_SPARSEWRITE 2 479 480/* 481 * For checking structure magic numbers... 482 */ 483 484#define EXT2_CHECK_MAGIC(struct, code) \ 485 if ((struct)->magic != (code)) return (code) 486 487 488/* 489 * For ext2 compression support 490 */ 491#define EXT2FS_COMPRESSED_BLKADDR ((blk_t) -1) 492#define HOLE_BLKADDR(_b) ((_b) == 0 || (_b) == EXT2FS_COMPRESSED_BLKADDR) 493 494/* 495 * Features supported by this version of the library 496 */ 497#define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\ 498 EXT2_FEATURE_COMPAT_IMAGIC_INODES|\ 499 EXT3_FEATURE_COMPAT_HAS_JOURNAL|\ 500 EXT2_FEATURE_COMPAT_RESIZE_INODE|\ 501 EXT2_FEATURE_COMPAT_DIR_INDEX|\ 502 EXT2_FEATURE_COMPAT_EXT_ATTR) 503 504/* This #ifdef is temporary until compression is fully supported */ 505#ifdef ENABLE_COMPRESSION 506#ifndef I_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL 507/* If the below warning bugs you, then have 508 `CPPFLAGS=-DI_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL' in your 509 environment at configure time. */ 510 #warning "Compression support is experimental" 511#endif 512#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 513 EXT2_FEATURE_INCOMPAT_COMPRESSION|\ 514 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 515 EXT2_FEATURE_INCOMPAT_META_BG|\ 516 EXT3_FEATURE_INCOMPAT_RECOVER|\ 517 EXT3_FEATURE_INCOMPAT_EXTENTS|\ 518 EXT4_FEATURE_INCOMPAT_FLEX_BG) 519#else 520#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 521 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 522 EXT2_FEATURE_INCOMPAT_META_BG|\ 523 EXT3_FEATURE_INCOMPAT_RECOVER|\ 524 EXT3_FEATURE_INCOMPAT_EXTENTS|\ 525 EXT4_FEATURE_INCOMPAT_FLEX_BG) 526#endif 527#define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\ 528 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|\ 529 EXT2_FEATURE_RO_COMPAT_LARGE_FILE|\ 530 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|\ 531 EXT4_FEATURE_RO_COMPAT_GDT_CSUM) 532 533/* 534 * These features are only allowed if EXT2_FLAG_SOFTSUPP_FEATURES is passed 535 * to ext2fs_openfs() 536 */ 537#define EXT2_LIB_SOFTSUPP_INCOMPAT (0) 538#define EXT2_LIB_SOFTSUPP_RO_COMPAT (EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE) 539 540/* 541 * function prototypes 542 */ 543 544/* alloc.c */ 545extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode, 546 ext2fs_inode_bitmap map, ext2_ino_t *ret); 547extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal, 548 ext2fs_block_bitmap map, blk_t *ret); 549extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start, 550 blk_t finish, int num, 551 ext2fs_block_bitmap map, 552 blk_t *ret); 553extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal, 554 char *block_buf, blk_t *ret); 555 556/* alloc_sb.c */ 557extern int ext2fs_reserve_super_and_bgd(ext2_filsys fs, 558 dgrp_t group, 559 ext2fs_block_bitmap bmap); 560 561/* alloc_stats.c */ 562void ext2fs_inode_alloc_stats(ext2_filsys fs, ext2_ino_t ino, int inuse); 563void ext2fs_inode_alloc_stats2(ext2_filsys fs, ext2_ino_t ino, 564 int inuse, int isdir); 565void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse); 566 567/* alloc_tables.c */ 568extern errcode_t ext2fs_allocate_tables(ext2_filsys fs); 569extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group, 570 ext2fs_block_bitmap bmap); 571 572/* badblocks.c */ 573extern errcode_t ext2fs_u32_list_create(ext2_u32_list *ret, int size); 574extern errcode_t ext2fs_u32_list_add(ext2_u32_list bb, __u32 blk); 575extern int ext2fs_u32_list_find(ext2_u32_list bb, __u32 blk); 576extern int ext2fs_u32_list_test(ext2_u32_list bb, blk_t blk); 577extern errcode_t ext2fs_u32_list_iterate_begin(ext2_u32_list bb, 578 ext2_u32_iterate *ret); 579extern int ext2fs_u32_list_iterate(ext2_u32_iterate iter, blk_t *blk); 580extern void ext2fs_u32_list_iterate_end(ext2_u32_iterate iter); 581extern errcode_t ext2fs_u32_copy(ext2_u32_list src, ext2_u32_list *dest); 582extern int ext2fs_u32_list_equal(ext2_u32_list bb1, ext2_u32_list bb2); 583 584extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret, 585 int size); 586extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb, 587 blk_t blk); 588extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb, 589 blk_t blk); 590extern int ext2fs_u32_list_del(ext2_u32_list bb, __u32 blk); 591extern void ext2fs_badblocks_list_del(ext2_u32_list bb, __u32 blk); 592extern errcode_t 593 ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb, 594 ext2_badblocks_iterate *ret); 595extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter, 596 blk_t *blk); 597extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter); 598extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src, 599 ext2_badblocks_list *dest); 600extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1, 601 ext2_badblocks_list bb2); 602extern int ext2fs_u32_list_count(ext2_u32_list bb); 603 604/* bb_compat */ 605extern errcode_t badblocks_list_create(badblocks_list *ret, int size); 606extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk); 607extern int badblocks_list_test(badblocks_list bb, blk_t blk); 608extern errcode_t badblocks_list_iterate_begin(badblocks_list bb, 609 badblocks_iterate *ret); 610extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk); 611extern void badblocks_list_iterate_end(badblocks_iterate iter); 612extern void badblocks_list_free(badblocks_list bb); 613 614/* bb_inode.c */ 615extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs, 616 ext2_badblocks_list bb_list); 617 618/* bitmaps.c */ 619extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap); 620extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap); 621extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src, 622 ext2fs_generic_bitmap *dest); 623extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs); 624extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs); 625extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs); 626extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs); 627extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs, 628 const char *descr, 629 ext2fs_block_bitmap *ret); 630extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs, 631 const char *descr, 632 ext2fs_inode_bitmap *ret); 633extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap, 634 ext2_ino_t end, ext2_ino_t *oend); 635extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap, 636 blk_t end, blk_t *oend); 637extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap); 638extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap); 639extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs); 640extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs); 641extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end, 642 ext2fs_inode_bitmap bmap); 643extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end, 644 ext2fs_block_bitmap bmap); 645extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1, 646 ext2fs_block_bitmap bm2); 647extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1, 648 ext2fs_inode_bitmap bm2); 649extern errcode_t ext2fs_set_inode_bitmap_range(ext2fs_inode_bitmap bmap, 650 ext2_ino_t start, unsigned int num, 651 void *in); 652extern errcode_t ext2fs_get_inode_bitmap_range(ext2fs_inode_bitmap bmap, 653 ext2_ino_t start, unsigned int num, 654 void *out); 655extern errcode_t ext2fs_set_block_bitmap_range(ext2fs_block_bitmap bmap, 656 blk_t start, unsigned int num, 657 void *in); 658extern errcode_t ext2fs_get_block_bitmap_range(ext2fs_block_bitmap bmap, 659 blk_t start, unsigned int num, 660 void *out); 661 662 663/* block.c */ 664extern errcode_t ext2fs_block_iterate(ext2_filsys fs, 665 ext2_ino_t ino, 666 int flags, 667 char *block_buf, 668 int (*func)(ext2_filsys fs, 669 blk_t *blocknr, 670 int blockcnt, 671 void *priv_data), 672 void *priv_data); 673errcode_t ext2fs_block_iterate2(ext2_filsys fs, 674 ext2_ino_t ino, 675 int flags, 676 char *block_buf, 677 int (*func)(ext2_filsys fs, 678 blk_t *blocknr, 679 e2_blkcnt_t blockcnt, 680 blk_t ref_blk, 681 int ref_offset, 682 void *priv_data), 683 void *priv_data); 684 685/* bmap.c */ 686extern errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino, 687 struct ext2_inode *inode, 688 char *block_buf, int bmap_flags, 689 blk_t block, blk_t *phys_blk); 690extern errcode_t ext2fs_bmap2(ext2_filsys fs, ext2_ino_t ino, 691 struct ext2_inode *inode, 692 char *block_buf, int bmap_flags, blk64_t block, 693 int *ret_flags, blk64_t *phys_blk); 694 695#if 0 696/* bmove.c */ 697extern errcode_t ext2fs_move_blocks(ext2_filsys fs, 698 ext2fs_block_bitmap reserve, 699 ext2fs_block_bitmap alloc_map, 700 int flags); 701#endif 702 703/* check_desc.c */ 704extern errcode_t ext2fs_check_desc(ext2_filsys fs); 705 706/* closefs.c */ 707extern errcode_t ext2fs_close(ext2_filsys fs); 708extern errcode_t ext2fs_flush(ext2_filsys fs); 709extern int ext2fs_bg_has_super(ext2_filsys fs, int group_block); 710extern int ext2fs_super_and_bgd_loc(ext2_filsys fs, 711 dgrp_t group, 712 blk_t *ret_super_blk, 713 blk_t *ret_old_desc_blk, 714 blk_t *ret_new_desc_blk, 715 int *ret_meta_bg); 716extern void ext2fs_update_dynamic_rev(ext2_filsys fs); 717 718/* csum.c */ 719extern void ext2fs_group_desc_csum_set(ext2_filsys fs, dgrp_t group); 720extern int ext2fs_group_desc_csum_verify(ext2_filsys fs, dgrp_t group); 721extern errcode_t ext2fs_set_gdt_csum(ext2_filsys fs); 722 723/* dblist.c */ 724 725extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs); 726extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist); 727extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ext2_ino_t ino, 728 blk_t blk, int blockcnt); 729extern void ext2fs_dblist_sort(ext2_dblist dblist, 730 EXT2_QSORT_TYPE (*sortfunc)(const void *, 731 const void *)); 732extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist, 733 int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info, 734 void *priv_data), 735 void *priv_data); 736extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ext2_ino_t ino, 737 blk_t blk, int blockcnt); 738extern errcode_t ext2fs_copy_dblist(ext2_dblist src, 739 ext2_dblist *dest); 740extern int ext2fs_dblist_count(ext2_dblist dblist); 741extern errcode_t ext2fs_dblist_get_last(ext2_dblist dblist, 742 struct ext2_db_entry **entry); 743extern errcode_t ext2fs_dblist_drop_last(ext2_dblist dblist); 744 745/* dblist_dir.c */ 746extern errcode_t 747 ext2fs_dblist_dir_iterate(ext2_dblist dblist, 748 int flags, 749 char *block_buf, 750 int (*func)(ext2_ino_t dir, 751 int entry, 752 struct ext2_dir_entry *dirent, 753 int offset, 754 int blocksize, 755 char *buf, 756 void *priv_data), 757 void *priv_data); 758 759/* dirblock.c */ 760extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block, 761 void *buf); 762extern errcode_t ext2fs_read_dir_block2(ext2_filsys fs, blk_t block, 763 void *buf, int flags); 764extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block, 765 void *buf); 766extern errcode_t ext2fs_write_dir_block2(ext2_filsys fs, blk_t block, 767 void *buf, int flags); 768 769/* dirhash.c */ 770extern errcode_t ext2fs_dirhash(int version, const char *name, int len, 771 const __u32 *seed, 772 ext2_dirhash_t *ret_hash, 773 ext2_dirhash_t *ret_minor_hash); 774 775 776/* dir_iterate.c */ 777extern errcode_t ext2fs_dir_iterate(ext2_filsys fs, 778 ext2_ino_t dir, 779 int flags, 780 char *block_buf, 781 int (*func)(struct ext2_dir_entry *dirent, 782 int offset, 783 int blocksize, 784 char *buf, 785 void *priv_data), 786 void *priv_data); 787extern errcode_t ext2fs_dir_iterate2(ext2_filsys fs, 788 ext2_ino_t dir, 789 int flags, 790 char *block_buf, 791 int (*func)(ext2_ino_t dir, 792 int entry, 793 struct ext2_dir_entry *dirent, 794 int offset, 795 int blocksize, 796 char *buf, 797 void *priv_data), 798 void *priv_data); 799 800/* dupfs.c */ 801extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest); 802 803/* expanddir.c */ 804extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir); 805 806/* ext_attr.c */ 807extern __u32 ext2fs_ext_attr_hash_entry(struct ext2_ext_attr_entry *entry, 808 void *data); 809extern errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf); 810extern errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block, 811 void *buf); 812extern errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk, 813 char *block_buf, 814 int adjust, __u32 *newcount); 815 816/* extent.c */ 817extern errcode_t ext2fs_extent_header_verify(void *ptr, int size); 818extern errcode_t ext2fs_extent_open(ext2_filsys fs, ext2_ino_t ino, 819 ext2_extent_handle_t *handle); 820extern void ext2fs_extent_free(ext2_extent_handle_t handle); 821extern errcode_t ext2fs_extent_get(ext2_extent_handle_t handle, 822 int flags, struct ext2fs_extent *extent); 823extern errcode_t ext2fs_extent_replace(ext2_extent_handle_t handle, int flags, 824 struct ext2fs_extent *extent); 825extern errcode_t ext2fs_extent_insert(ext2_extent_handle_t handle, int flags, 826 struct ext2fs_extent *extent); 827extern errcode_t ext2fs_extent_set_bmap(ext2_extent_handle_t handle, 828 blk64_t logical, blk64_t physical, 829 int flags); 830extern errcode_t ext2fs_extent_delete(ext2_extent_handle_t handle, int flags); 831extern errcode_t ext2fs_extent_get_info(ext2_extent_handle_t handle, 832 struct ext2_extent_info *info); 833extern errcode_t ext2fs_extent_goto(ext2_extent_handle_t handle, 834 blk64_t blk); 835 836/* fileio.c */ 837extern errcode_t ext2fs_file_open2(ext2_filsys fs, ext2_ino_t ino, 838 struct ext2_inode *inode, 839 int flags, ext2_file_t *ret); 840extern errcode_t ext2fs_file_open(ext2_filsys fs, ext2_ino_t ino, 841 int flags, ext2_file_t *ret); 842extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file); 843extern errcode_t ext2fs_file_close(ext2_file_t file); 844extern errcode_t ext2fs_file_flush(ext2_file_t file); 845extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf, 846 unsigned int wanted, unsigned int *got); 847extern errcode_t ext2fs_file_write(ext2_file_t file, const void *buf, 848 unsigned int nbytes, unsigned int *written); 849extern errcode_t ext2fs_file_llseek(ext2_file_t file, __u64 offset, 850 int whence, __u64 *ret_pos); 851extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset, 852 int whence, ext2_off_t *ret_pos); 853errcode_t ext2fs_file_get_lsize(ext2_file_t file, __u64 *ret_size); 854extern ext2_off_t ext2fs_file_get_size(ext2_file_t file); 855extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size); 856 857/* finddev.c */ 858extern char *ext2fs_find_block_device(dev_t device); 859 860/* flushb.c */ 861extern errcode_t ext2fs_sync_device(int fd, int flushb); 862 863/* freefs.c */ 864extern void ext2fs_free(ext2_filsys fs); 865extern void ext2fs_free_dblist(ext2_dblist dblist); 866extern void ext2fs_badblocks_list_free(ext2_badblocks_list bb); 867extern void ext2fs_u32_list_free(ext2_u32_list bb); 868 869/* gen_bitmap.c */ 870extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap); 871extern errcode_t ext2fs_make_generic_bitmap(errcode_t magic, ext2_filsys fs, 872 __u32 start, __u32 end, 873 __u32 real_end, 874 const char *descr, char *init_map, 875 ext2fs_generic_bitmap *ret); 876extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start, 877 __u32 end, 878 __u32 real_end, 879 const char *descr, 880 ext2fs_generic_bitmap *ret); 881extern errcode_t ext2fs_copy_generic_bitmap(ext2fs_generic_bitmap src, 882 ext2fs_generic_bitmap *dest); 883extern void ext2fs_clear_generic_bitmap(ext2fs_generic_bitmap bitmap); 884extern errcode_t ext2fs_fudge_generic_bitmap_end(ext2fs_inode_bitmap bitmap, 885 errcode_t magic, 886 errcode_t neq, 887 ext2_ino_t end, 888 ext2_ino_t *oend); 889extern void ext2fs_set_generic_bitmap_padding(ext2fs_generic_bitmap map); 890extern errcode_t ext2fs_resize_generic_bitmap(errcode_t magic, 891 __u32 new_end, 892 __u32 new_real_end, 893 ext2fs_generic_bitmap bmap); 894extern errcode_t ext2fs_compare_generic_bitmap(errcode_t magic, errcode_t neq, 895 ext2fs_generic_bitmap bm1, 896 ext2fs_generic_bitmap bm2); 897extern errcode_t ext2fs_get_generic_bitmap_range(ext2fs_generic_bitmap bmap, 898 errcode_t magic, 899 __u32 start, __u32 num, 900 void *out); 901extern errcode_t ext2fs_set_generic_bitmap_range(ext2fs_generic_bitmap bmap, 902 errcode_t magic, 903 __u32 start, __u32 num, 904 void *in); 905 906/* getsize.c */ 907extern errcode_t ext2fs_get_device_size(const char *file, int blocksize, 908 blk_t *retblocks); 909 910/* getsectsize.c */ 911errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize); 912 913/* i_block.c */ 914errcode_t ext2fs_iblk_add_blocks(ext2_filsys fs, struct ext2_inode *inode, 915 blk64_t num_blocks); 916errcode_t ext2fs_iblk_sub_blocks(ext2_filsys fs, struct ext2_inode *inode, 917 blk64_t num_blocks); 918errcode_t ext2fs_iblk_set(ext2_filsys fs, struct ext2_inode *inode, blk64_t b); 919 920/* imager.c */ 921extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags); 922extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags); 923extern errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd, int flags); 924extern errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd, int flags); 925extern errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags); 926extern errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags); 927 928/* ind_block.c */ 929errcode_t ext2fs_read_ind_block(ext2_filsys fs, blk_t blk, void *buf); 930errcode_t ext2fs_write_ind_block(ext2_filsys fs, blk_t blk, void *buf); 931 932/* initialize.c */ 933extern errcode_t ext2fs_initialize(const char *name, int flags, 934 struct ext2_super_block *param, 935 io_manager manager, ext2_filsys *ret_fs); 936 937/* icount.c */ 938extern void ext2fs_free_icount(ext2_icount_t icount); 939extern errcode_t ext2fs_create_icount_tdb(ext2_filsys fs, char *tdb_dir, 940 int flags, ext2_icount_t *ret); 941extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags, 942 unsigned int size, 943 ext2_icount_t hint, ext2_icount_t *ret); 944extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags, 945 unsigned int size, 946 ext2_icount_t *ret); 947extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ext2_ino_t ino, 948 __u16 *ret); 949extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ext2_ino_t ino, 950 __u16 *ret); 951extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ext2_ino_t ino, 952 __u16 *ret); 953extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ext2_ino_t ino, 954 __u16 count); 955extern ext2_ino_t ext2fs_get_icount_size(ext2_icount_t icount); 956errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *); 957 958/* inode.c */ 959extern errcode_t ext2fs_flush_icache(ext2_filsys fs); 960extern errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan, 961 ext2_ino_t *ino, 962 struct ext2_inode *inode, 963 int bufsize); 964extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks, 965 ext2_inode_scan *ret_scan); 966extern void ext2fs_close_inode_scan(ext2_inode_scan scan); 967extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino, 968 struct ext2_inode *inode); 969extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan, 970 int group); 971extern void ext2fs_set_inode_callback 972 (ext2_inode_scan scan, 973 errcode_t (*done_group)(ext2_filsys fs, 974 ext2_inode_scan scan, 975 dgrp_t group, 976 void * priv_data), 977 void *done_group_data); 978extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags, 979 int clear_flags); 980extern errcode_t ext2fs_read_inode_full(ext2_filsys fs, ext2_ino_t ino, 981 struct ext2_inode * inode, 982 int bufsize); 983extern errcode_t ext2fs_read_inode (ext2_filsys fs, ext2_ino_t ino, 984 struct ext2_inode * inode); 985extern errcode_t ext2fs_write_inode_full(ext2_filsys fs, ext2_ino_t ino, 986 struct ext2_inode * inode, 987 int bufsize); 988extern errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino, 989 struct ext2_inode * inode); 990extern errcode_t ext2fs_write_new_inode(ext2_filsys fs, ext2_ino_t ino, 991 struct ext2_inode * inode); 992extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); 993extern errcode_t ext2fs_check_directory(ext2_filsys fs, ext2_ino_t ino); 994 995/* inode_io.c */ 996extern io_manager inode_io_manager; 997extern errcode_t ext2fs_inode_io_intern(ext2_filsys fs, ext2_ino_t ino, 998 char **name); 999extern errcode_t ext2fs_inode_io_intern2(ext2_filsys fs, ext2_ino_t ino, 1000 struct ext2_inode *inode, 1001 char **name); 1002 1003/* ismounted.c */ 1004extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags); 1005extern errcode_t ext2fs_check_mount_point(const char *device, int *mount_flags, 1006 char *mtpt, int mtlen); 1007 1008/* namei.c */ 1009extern errcode_t ext2fs_lookup(ext2_filsys fs, ext2_ino_t dir, const char *name, 1010 int namelen, char *buf, ext2_ino_t *inode); 1011extern errcode_t ext2fs_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1012 const char *name, ext2_ino_t *inode); 1013errcode_t ext2fs_namei_follow(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1014 const char *name, ext2_ino_t *inode); 1015extern errcode_t ext2fs_follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1016 ext2_ino_t inode, ext2_ino_t *res_inode); 1017 1018/* native.c */ 1019int ext2fs_native_flag(void); 1020 1021/* newdir.c */ 1022extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino, 1023 ext2_ino_t parent_ino, char **block); 1024 1025/* mkdir.c */ 1026extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum, 1027 const char *name); 1028 1029/* mkjournal.c */ 1030extern errcode_t ext2fs_zero_blocks(ext2_filsys fs, blk_t blk, int num, 1031 blk_t *ret_blk, int *ret_count); 1032extern errcode_t ext2fs_create_journal_superblock(ext2_filsys fs, 1033 __u32 size, int flags, 1034 char **ret_jsb); 1035extern errcode_t ext2fs_add_journal_device(ext2_filsys fs, 1036 ext2_filsys journal_dev); 1037extern errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t size, 1038 int flags); 1039extern int ext2fs_default_journal_size(__u64 blocks); 1040 1041/* openfs.c */ 1042extern errcode_t ext2fs_open(const char *name, int flags, int superblock, 1043 unsigned int block_size, io_manager manager, 1044 ext2_filsys *ret_fs); 1045extern errcode_t ext2fs_open2(const char *name, const char *io_options, 1046 int flags, int superblock, 1047 unsigned int block_size, io_manager manager, 1048 ext2_filsys *ret_fs); 1049extern blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block, 1050 dgrp_t i); 1051errcode_t ext2fs_get_data_io(ext2_filsys fs, io_channel *old_io); 1052errcode_t ext2fs_set_data_io(ext2_filsys fs, io_channel new_io); 1053errcode_t ext2fs_rewrite_to_io(ext2_filsys fs, io_channel new_io); 1054 1055/* get_pathname.c */ 1056extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino, 1057 char **name); 1058 1059/* link.c */ 1060errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name, 1061 ext2_ino_t ino, int flags); 1062errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir, const char *name, 1063 ext2_ino_t ino, int flags); 1064 1065/* read_bb.c */ 1066extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs, 1067 ext2_badblocks_list *bb_list); 1068 1069/* read_bb_file.c */ 1070extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f, 1071 ext2_badblocks_list *bb_list, 1072 void *priv_data, 1073 void (*invalid)(ext2_filsys fs, 1074 blk_t blk, 1075 char *badstr, 1076 void *priv_data)); 1077extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f, 1078 ext2_badblocks_list *bb_list, 1079 void (*invalid)(ext2_filsys fs, 1080 blk_t blk)); 1081 1082/* res_gdt.c */ 1083extern errcode_t ext2fs_create_resize_inode(ext2_filsys fs); 1084 1085/* swapfs.c */ 1086extern void ext2fs_swap_ext_attr(char *to, char *from, int bufsize, 1087 int has_header); 1088extern void ext2fs_swap_ext_attr_header(struct ext2_ext_attr_header *to_header, 1089 struct ext2_ext_attr_header *from_hdr); 1090extern void ext2fs_swap_ext_attr_entry(struct ext2_ext_attr_entry *to_entry, 1091 struct ext2_ext_attr_entry *from_entry); 1092extern void ext2fs_swap_super(struct ext2_super_block * super); 1093extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp); 1094extern void ext2fs_swap_inode_full(ext2_filsys fs, struct ext2_inode_large *t, 1095 struct ext2_inode_large *f, int hostorder, 1096 int bufsize); 1097extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t, 1098 struct ext2_inode *f, int hostorder); 1099 1100/* valid_blk.c */ 1101extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode); 1102 1103/* version.c */ 1104extern int ext2fs_parse_version_string(const char *ver_string); 1105extern int ext2fs_get_library_version(const char **ver_string, 1106 const char **date_string); 1107 1108/* write_bb_file.c */ 1109extern errcode_t ext2fs_write_bb_FILE(ext2_badblocks_list bb_list, 1110 unsigned int flags, 1111 FILE *f); 1112 1113 1114/* inline functions */ 1115extern errcode_t ext2fs_get_mem(unsigned long size, void *ptr); 1116extern errcode_t ext2fs_get_array(unsigned long count, unsigned long size, void *ptr); 1117extern errcode_t ext2fs_free_mem(void *ptr); 1118extern errcode_t ext2fs_resize_mem(unsigned long old_size, 1119 unsigned long size, void *ptr); 1120extern void ext2fs_mark_super_dirty(ext2_filsys fs); 1121extern void ext2fs_mark_changed(ext2_filsys fs); 1122extern int ext2fs_test_changed(ext2_filsys fs); 1123extern void ext2fs_mark_valid(ext2_filsys fs); 1124extern void ext2fs_unmark_valid(ext2_filsys fs); 1125extern int ext2fs_test_valid(ext2_filsys fs); 1126extern void ext2fs_mark_ib_dirty(ext2_filsys fs); 1127extern void ext2fs_mark_bb_dirty(ext2_filsys fs); 1128extern int ext2fs_test_ib_dirty(ext2_filsys fs); 1129extern int ext2fs_test_bb_dirty(ext2_filsys fs); 1130extern int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk); 1131extern int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino); 1132extern blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group); 1133extern blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group); 1134extern blk_t ext2fs_inode_data_blocks(ext2_filsys fs, 1135 struct ext2_inode *inode); 1136extern unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b); 1137 1138/* 1139 * The actual inlined functions definitions themselves... 1140 * 1141 * If NO_INLINE_FUNCS is defined, then we won't try to do inline 1142 * functions at all! 1143 */ 1144#if (defined(INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS)) 1145#ifdef INCLUDE_INLINE_FUNCS 1146#define _INLINE_ extern 1147#else 1148#ifdef __GNUC__ 1149#define _INLINE_ extern __inline__ 1150#else /* For Watcom C */ 1151#define _INLINE_ extern inline 1152#endif 1153#endif 1154 1155#ifndef EXT2_CUSTOM_MEMORY_ROUTINES 1156#include <string.h> 1157/* 1158 * Allocate memory 1159 */ 1160_INLINE_ errcode_t ext2fs_get_mem(unsigned long size, void *ptr) 1161{ 1162 void *pp; 1163 1164 pp = malloc(size); 1165 if (!pp) 1166 return EXT2_ET_NO_MEMORY; 1167 memcpy(ptr, &pp, sizeof (pp)); 1168 return 0; 1169} 1170 1171_INLINE_ errcode_t ext2fs_get_array(unsigned long count, unsigned long size, void *ptr) 1172{ 1173 if (count && (-1UL)/count<size) 1174 return EXT2_ET_NO_MEMORY; //maybe define EXT2_ET_OVERFLOW ? 1175 return ext2fs_get_mem(count*size, ptr); 1176} 1177 1178/* 1179 * Free memory 1180 */ 1181_INLINE_ errcode_t ext2fs_free_mem(void *ptr) 1182{ 1183 void *p; 1184 1185 memcpy(&p, ptr, sizeof(p)); 1186 free(p); 1187 p = 0; 1188 memcpy(ptr, &p, sizeof(p)); 1189 return 0; 1190} 1191 1192/* 1193 * Resize memory 1194 */ 1195_INLINE_ errcode_t ext2fs_resize_mem(unsigned long EXT2FS_ATTR((unused)) old_size, 1196 unsigned long size, void *ptr) 1197{ 1198 void *p; 1199 1200 /* Use "memcpy" for pointer assignments here to avoid problems 1201 * with C99 strict type aliasing rules. */ 1202 memcpy(&p, ptr, sizeof(p)); 1203 p = realloc(p, size); 1204 if (!p) 1205 return EXT2_ET_NO_MEMORY; 1206 memcpy(ptr, &p, sizeof(p)); 1207 return 0; 1208} 1209#endif /* Custom memory routines */ 1210 1211/* 1212 * Mark a filesystem superblock as dirty 1213 */ 1214_INLINE_ void ext2fs_mark_super_dirty(ext2_filsys fs) 1215{ 1216 fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_CHANGED; 1217} 1218 1219/* 1220 * Mark a filesystem as changed 1221 */ 1222_INLINE_ void ext2fs_mark_changed(ext2_filsys fs) 1223{ 1224 fs->flags |= EXT2_FLAG_CHANGED; 1225} 1226 1227/* 1228 * Check to see if a filesystem has changed 1229 */ 1230_INLINE_ int ext2fs_test_changed(ext2_filsys fs) 1231{ 1232 return (fs->flags & EXT2_FLAG_CHANGED); 1233} 1234 1235/* 1236 * Mark a filesystem as valid 1237 */ 1238_INLINE_ void ext2fs_mark_valid(ext2_filsys fs) 1239{ 1240 fs->flags |= EXT2_FLAG_VALID; 1241} 1242 1243/* 1244 * Mark a filesystem as NOT valid 1245 */ 1246_INLINE_ void ext2fs_unmark_valid(ext2_filsys fs) 1247{ 1248 fs->flags &= ~EXT2_FLAG_VALID; 1249} 1250 1251/* 1252 * Check to see if a filesystem is valid 1253 */ 1254_INLINE_ int ext2fs_test_valid(ext2_filsys fs) 1255{ 1256 return (fs->flags & EXT2_FLAG_VALID); 1257} 1258 1259/* 1260 * Mark the inode bitmap as dirty 1261 */ 1262_INLINE_ void ext2fs_mark_ib_dirty(ext2_filsys fs) 1263{ 1264 fs->flags |= EXT2_FLAG_IB_DIRTY | EXT2_FLAG_CHANGED; 1265} 1266 1267/* 1268 * Mark the block bitmap as dirty 1269 */ 1270_INLINE_ void ext2fs_mark_bb_dirty(ext2_filsys fs) 1271{ 1272 fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_CHANGED; 1273} 1274 1275/* 1276 * Check to see if a filesystem's inode bitmap is dirty 1277 */ 1278_INLINE_ int ext2fs_test_ib_dirty(ext2_filsys fs) 1279{ 1280 return (fs->flags & EXT2_FLAG_IB_DIRTY); 1281} 1282 1283/* 1284 * Check to see if a filesystem's block bitmap is dirty 1285 */ 1286_INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs) 1287{ 1288 return (fs->flags & EXT2_FLAG_BB_DIRTY); 1289} 1290 1291/* 1292 * Return the group # of a block 1293 */ 1294_INLINE_ int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk) 1295{ 1296 return (blk - fs->super->s_first_data_block) / 1297 fs->super->s_blocks_per_group; 1298} 1299 1300/* 1301 * Return the group # of an inode number 1302 */ 1303_INLINE_ int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino) 1304{ 1305 return (ino - 1) / fs->super->s_inodes_per_group; 1306} 1307 1308/* 1309 * Return the first block (inclusive) in a group 1310 */ 1311_INLINE_ blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group) 1312{ 1313 return fs->super->s_first_data_block + 1314 (group * fs->super->s_blocks_per_group); 1315} 1316 1317/* 1318 * Return the last block (inclusive) in a group 1319 */ 1320_INLINE_ blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group) 1321{ 1322 return (group == fs->group_desc_count - 1 ? 1323 fs->super->s_blocks_count - 1 : 1324 ext2fs_group_first_block(fs, group) + 1325 (fs->super->s_blocks_per_group - 1)); 1326} 1327 1328_INLINE_ blk_t ext2fs_inode_data_blocks(ext2_filsys fs, 1329 struct ext2_inode *inode) 1330{ 1331 return inode->i_blocks - 1332 (inode->i_file_acl ? fs->blocksize >> 9 : 0); 1333} 1334 1335/* 1336 * This is an efficient, overflow safe way of calculating ceil((1.0 * a) / b) 1337 */ 1338_INLINE_ unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b) 1339{ 1340 if (!a) 1341 return 0; 1342 return ((a - 1) / b) + 1; 1343} 1344#undef _INLINE_ 1345#endif 1346 1347#ifdef __cplusplus 1348} 1349#endif 1350 1351#endif /* _EXT2FS_EXT2FS_H */ 1352