ext2fs.h revision fefaef39e046781ddc75d15a8f12369f17dbd17d
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 174 175/* 176 * Special flag in the ext2 inode i_flag field that means that this is 177 * a new inode. (So that ext2_write_inode() can clear extra fields.) 178 */ 179#define EXT2_NEW_INODE_FL 0x80000000 180 181/* 182 * Flags for mkjournal 183 * 184 * EXT2_MKJOURNAL_V1_SUPER Make a (deprecated) V1 journal superblock 185 */ 186#define EXT2_MKJOURNAL_V1_SUPER 0x0000001 187 188struct struct_ext2_filsys { 189 errcode_t magic; 190 io_channel io; 191 int flags; 192 char * device_name; 193 struct ext2_super_block * super; 194 unsigned int blocksize; 195 int fragsize; 196 dgrp_t group_desc_count; 197 unsigned long desc_blocks; 198 struct ext2_group_desc * group_desc; 199 int inode_blocks_per_group; 200 ext2fs_inode_bitmap inode_map; 201 ext2fs_block_bitmap block_map; 202 errcode_t (*get_blocks)(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); 203 errcode_t (*check_directory)(ext2_filsys fs, ext2_ino_t ino); 204 errcode_t (*write_bitmaps)(ext2_filsys fs); 205 errcode_t (*read_inode)(ext2_filsys fs, ext2_ino_t ino, 206 struct ext2_inode *inode); 207 errcode_t (*write_inode)(ext2_filsys fs, ext2_ino_t ino, 208 struct ext2_inode *inode); 209 ext2_badblocks_list badblocks; 210 ext2_dblist dblist; 211 __u32 stride; /* for mke2fs */ 212 struct ext2_super_block * orig_super; 213 struct ext2_image_hdr * image_header; 214 __u32 umask; 215 time_t now; 216 /* 217 * Reserved for future expansion 218 */ 219 __u32 reserved[7]; 220 221 /* 222 * Reserved for the use of the calling application. 223 */ 224 void * priv_data; 225 226 /* 227 * Inode cache 228 */ 229 struct ext2_inode_cache *icache; 230 io_channel image_io; 231}; 232 233#if EXT2_FLAT_INCLUDES 234#include "e2_bitops.h" 235#else 236#include <ext2fs/bitops.h> 237#endif 238 239/* 240 * Return flags for the block iterator functions 241 */ 242#define BLOCK_CHANGED 1 243#define BLOCK_ABORT 2 244#define BLOCK_ERROR 4 245 246/* 247 * Block interate flags 248 * 249 * BLOCK_FLAG_APPEND, or BLOCK_FLAG_HOLE, indicates that the interator 250 * function should be called on blocks where the block number is zero. 251 * This is used by ext2fs_expand_dir() to be able to add a new block 252 * to an inode. It can also be used for programs that want to be able 253 * to deal with files that contain "holes". 254 * 255 * BLOCK_FLAG_DEPTH_TRAVERSE indicates that the iterator function for 256 * the indirect, doubly indirect, etc. blocks should be called after 257 * all of the blocks containined in the indirect blocks are processed. 258 * This is useful if you are going to be deallocating blocks from an 259 * inode. 260 * 261 * BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be 262 * called for data blocks only. 263 * 264 * BLOCK_FLAG_READ_ONLY is a promise by the caller that it will not 265 * modify returned block number. 266 * 267 * BLOCK_FLAG_NO_LARGE is for internal use only. It informs 268 * ext2fs_block_iterate2 that large files won't be accepted. 269 */ 270#define BLOCK_FLAG_APPEND 1 271#define BLOCK_FLAG_HOLE 1 272#define BLOCK_FLAG_DEPTH_TRAVERSE 2 273#define BLOCK_FLAG_DATA_ONLY 4 274#define BLOCK_FLAG_READ_ONLY 8 275 276#define BLOCK_FLAG_NO_LARGE 0x1000 277 278/* 279 * Magic "block count" return values for the block iterator function. 280 */ 281#define BLOCK_COUNT_IND (-1) 282#define BLOCK_COUNT_DIND (-2) 283#define BLOCK_COUNT_TIND (-3) 284#define BLOCK_COUNT_TRANSLATOR (-4) 285 286#if 0 287/* 288 * Flags for ext2fs_move_blocks 289 */ 290#define EXT2_BMOVE_GET_DBLIST 0x0001 291#define EXT2_BMOVE_DEBUG 0x0002 292#endif 293 294/* 295 * Generic (non-filesystem layout specific) extents structure 296 */ 297 298#define EXT2_EXTENT_FLAGS_LEAF 0x0001 299#define EXT2_EXTENT_FLAGS_UNINIT 0x0002 300#define EXT2_EXTENT_FLAGS_SECOND_VISIT 0x0004 301 302struct ext2fs_extent { 303 blk64_t e_pblk; /* first physical block */ 304 blk64_t e_lblk; /* first logical block extent covers */ 305 __u32 e_len; /* number of blocks covered by extent */ 306 __u32 e_flags; /* extent flags */ 307}; 308 309typedef struct ext2_extent_handle *ext2_extent_handle_t; 310typedef struct ext2_extent_path *ext2_extent_path_t; 311 312/* 313 * Flags used by ext2fs_extent_get() 314 */ 315#define EXT2_EXTENT_CURRENT 0x0000 316#define EXT2_EXTENT_MOVE_MASK 0x000F 317#define EXT2_EXTENT_ROOT 0x0001 318#define EXT2_EXTENT_LAST_LEAF 0x0002 319#define EXT2_EXTENT_FIRST_SIB 0x0003 320#define EXT2_EXTENT_LAST_SIB 0x0004 321#define EXT2_EXTENT_NEXT_SIB 0x0005 322#define EXT2_EXTENT_PREV_SIB 0x0006 323#define EXT2_EXTENT_NEXT_LEAF 0x0007 324#define EXT2_EXTENT_PREV_LEAF 0x0008 325#define EXT2_EXTENT_NEXT 0x0009 326#define EXT2_EXTENT_PREV 0x000A 327#define EXT2_EXTENT_UP 0x000B 328#define EXT2_EXTENT_DOWN 0x000C 329#define EXT2_EXTENT_DOWN_AND_LAST 0x000D 330 331/* 332 * Flags used by ext2fs_extent_insert() 333 */ 334 335#define EXT2_EXTENT_INSERT_AFTER 0x0001 336 337/* 338 * Data structure returned by ext2fs_extent_get_info() 339 */ 340struct ext2_extent_info { 341 int curr_entry; 342 int curr_level; 343 int num_entries; 344 int max_entries; 345 int max_depth; 346 int bytes_avail; 347 blk64_t max_lblk; 348 blk64_t max_pblk; 349 __u32 max_len; 350 __u32 max_uninit_len; 351}; 352 353/* 354 * Flags for directory block reading and writing functions 355 */ 356#define EXT2_DIRBLOCK_V2_STRUCT 0x0001 357 358/* 359 * Return flags for the directory iterator functions 360 */ 361#define DIRENT_CHANGED 1 362#define DIRENT_ABORT 2 363#define DIRENT_ERROR 3 364 365/* 366 * Directory iterator flags 367 */ 368 369#define DIRENT_FLAG_INCLUDE_EMPTY 1 370#define DIRENT_FLAG_INCLUDE_REMOVED 2 371 372#define DIRENT_DOT_FILE 1 373#define DIRENT_DOT_DOT_FILE 2 374#define DIRENT_OTHER_FILE 3 375#define DIRENT_DELETED_FILE 4 376 377/* 378 * Inode scan definitions 379 */ 380typedef struct ext2_struct_inode_scan *ext2_inode_scan; 381 382/* 383 * ext2fs_scan flags 384 */ 385#define EXT2_SF_CHK_BADBLOCKS 0x0001 386#define EXT2_SF_BAD_INODE_BLK 0x0002 387#define EXT2_SF_BAD_EXTRA_BYTES 0x0004 388#define EXT2_SF_SKIP_MISSING_ITABLE 0x0008 389#define EXT2_SF_DO_LAZY 0x0010 390 391/* 392 * ext2fs_check_if_mounted flags 393 */ 394#define EXT2_MF_MOUNTED 1 395#define EXT2_MF_ISROOT 2 396#define EXT2_MF_READONLY 4 397#define EXT2_MF_SWAP 8 398#define EXT2_MF_BUSY 16 399 400/* 401 * Ext2/linux mode flags. We define them here so that we don't need 402 * to depend on the OS's sys/stat.h, since we may be compiling on a 403 * non-Linux system. 404 */ 405#define LINUX_S_IFMT 00170000 406#define LINUX_S_IFSOCK 0140000 407#define LINUX_S_IFLNK 0120000 408#define LINUX_S_IFREG 0100000 409#define LINUX_S_IFBLK 0060000 410#define LINUX_S_IFDIR 0040000 411#define LINUX_S_IFCHR 0020000 412#define LINUX_S_IFIFO 0010000 413#define LINUX_S_ISUID 0004000 414#define LINUX_S_ISGID 0002000 415#define LINUX_S_ISVTX 0001000 416 417#define LINUX_S_IRWXU 00700 418#define LINUX_S_IRUSR 00400 419#define LINUX_S_IWUSR 00200 420#define LINUX_S_IXUSR 00100 421 422#define LINUX_S_IRWXG 00070 423#define LINUX_S_IRGRP 00040 424#define LINUX_S_IWGRP 00020 425#define LINUX_S_IXGRP 00010 426 427#define LINUX_S_IRWXO 00007 428#define LINUX_S_IROTH 00004 429#define LINUX_S_IWOTH 00002 430#define LINUX_S_IXOTH 00001 431 432#define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK) 433#define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG) 434#define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR) 435#define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR) 436#define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK) 437#define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO) 438#define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK) 439 440/* 441 * ext2 size of an inode 442 */ 443#define EXT2_I_SIZE(i) ((i)->i_size | ((__u64) (i)->i_size_high << 32)) 444 445/* 446 * ext2_icount_t abstraction 447 */ 448#define EXT2_ICOUNT_OPT_INCREMENT 0x01 449 450typedef struct ext2_icount *ext2_icount_t; 451 452/* 453 * Flags for ext2fs_bmap 454 */ 455#define BMAP_ALLOC 0x0001 456#define BMAP_SET 0x0002 457 458/* 459 * Returned flags from ext2fs_bmap 460 */ 461#define BMAP_RET_UNINIT 0x0001 462 463/* 464 * Flags for imager.c functions 465 */ 466#define IMAGER_FLAG_INODEMAP 1 467#define IMAGER_FLAG_SPARSEWRITE 2 468 469/* 470 * For checking structure magic numbers... 471 */ 472 473#define EXT2_CHECK_MAGIC(struct, code) \ 474 if ((struct)->magic != (code)) return (code) 475 476 477/* 478 * For ext2 compression support 479 */ 480#define EXT2FS_COMPRESSED_BLKADDR ((blk_t) -1) 481#define HOLE_BLKADDR(_b) ((_b) == 0 || (_b) == EXT2FS_COMPRESSED_BLKADDR) 482 483/* 484 * Features supported by this version of the library 485 */ 486#define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\ 487 EXT2_FEATURE_COMPAT_IMAGIC_INODES|\ 488 EXT3_FEATURE_COMPAT_HAS_JOURNAL|\ 489 EXT2_FEATURE_COMPAT_RESIZE_INODE|\ 490 EXT2_FEATURE_COMPAT_DIR_INDEX|\ 491 EXT2_FEATURE_COMPAT_LAZY_BG|\ 492 EXT2_FEATURE_COMPAT_EXT_ATTR) 493 494/* This #ifdef is temporary until compression is fully supported */ 495#ifdef ENABLE_COMPRESSION 496#ifndef I_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL 497/* If the below warning bugs you, then have 498 `CPPFLAGS=-DI_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL' in your 499 environment at configure time. */ 500 #warning "Compression support is experimental" 501#endif 502#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 503 EXT2_FEATURE_INCOMPAT_COMPRESSION|\ 504 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 505 EXT2_FEATURE_INCOMPAT_META_BG|\ 506 EXT3_FEATURE_INCOMPAT_RECOVER|\ 507 EXT3_FEATURE_INCOMPAT_EXTENTS|\ 508 EXT4_FEATURE_INCOMPAT_FLEX_BG) 509#else 510#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 511 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 512 EXT2_FEATURE_INCOMPAT_META_BG|\ 513 EXT3_FEATURE_INCOMPAT_RECOVER|\ 514 EXT3_FEATURE_INCOMPAT_EXTENTS|\ 515 EXT4_FEATURE_INCOMPAT_FLEX_BG) 516#endif 517#define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\ 518 EXT2_FEATURE_RO_COMPAT_LARGE_FILE) 519 520/* 521 * These features are only allowed if EXT2_FLAG_SOFTSUPP_FEATURES is passed 522 * to ext2fs_openfs() 523 */ 524#define EXT2_LIB_SOFTSUPP_INCOMPAT (EXT3_FEATURE_INCOMPAT_EXTENTS) 525#define EXT2_LIB_SOFTSUPP_RO_COMPAT (EXT4_FEATURE_RO_COMPAT_HUGE_FILE|\ 526 EXT4_FEATURE_RO_COMPAT_GDT_CSUM|\ 527 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|\ 528 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE) 529 530/* 531 * function prototypes 532 */ 533 534/* alloc.c */ 535extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode, 536 ext2fs_inode_bitmap map, ext2_ino_t *ret); 537extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal, 538 ext2fs_block_bitmap map, blk_t *ret); 539extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start, 540 blk_t finish, int num, 541 ext2fs_block_bitmap map, 542 blk_t *ret); 543extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal, 544 char *block_buf, blk_t *ret); 545 546/* alloc_sb.c */ 547extern int ext2fs_reserve_super_and_bgd(ext2_filsys fs, 548 dgrp_t group, 549 ext2fs_block_bitmap bmap); 550 551/* alloc_stats.c */ 552void ext2fs_inode_alloc_stats(ext2_filsys fs, ext2_ino_t ino, int inuse); 553void ext2fs_inode_alloc_stats2(ext2_filsys fs, ext2_ino_t ino, 554 int inuse, int isdir); 555void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse); 556 557/* alloc_tables.c */ 558extern errcode_t ext2fs_allocate_tables(ext2_filsys fs); 559extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group, 560 ext2fs_block_bitmap bmap); 561 562/* badblocks.c */ 563extern errcode_t ext2fs_u32_list_create(ext2_u32_list *ret, int size); 564extern errcode_t ext2fs_u32_list_add(ext2_u32_list bb, __u32 blk); 565extern int ext2fs_u32_list_find(ext2_u32_list bb, __u32 blk); 566extern int ext2fs_u32_list_test(ext2_u32_list bb, blk_t blk); 567extern errcode_t ext2fs_u32_list_iterate_begin(ext2_u32_list bb, 568 ext2_u32_iterate *ret); 569extern int ext2fs_u32_list_iterate(ext2_u32_iterate iter, blk_t *blk); 570extern void ext2fs_u32_list_iterate_end(ext2_u32_iterate iter); 571extern errcode_t ext2fs_u32_copy(ext2_u32_list src, ext2_u32_list *dest); 572extern int ext2fs_u32_list_equal(ext2_u32_list bb1, ext2_u32_list bb2); 573 574extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret, 575 int size); 576extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb, 577 blk_t blk); 578extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb, 579 blk_t blk); 580extern int ext2fs_u32_list_del(ext2_u32_list bb, __u32 blk); 581extern void ext2fs_badblocks_list_del(ext2_u32_list bb, __u32 blk); 582extern errcode_t 583 ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb, 584 ext2_badblocks_iterate *ret); 585extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter, 586 blk_t *blk); 587extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter); 588extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src, 589 ext2_badblocks_list *dest); 590extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1, 591 ext2_badblocks_list bb2); 592extern int ext2fs_u32_list_count(ext2_u32_list bb); 593 594/* bb_compat */ 595extern errcode_t badblocks_list_create(badblocks_list *ret, int size); 596extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk); 597extern int badblocks_list_test(badblocks_list bb, blk_t blk); 598extern errcode_t badblocks_list_iterate_begin(badblocks_list bb, 599 badblocks_iterate *ret); 600extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk); 601extern void badblocks_list_iterate_end(badblocks_iterate iter); 602extern void badblocks_list_free(badblocks_list bb); 603 604/* bb_inode.c */ 605extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs, 606 ext2_badblocks_list bb_list); 607 608/* bitmaps.c */ 609extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap); 610extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap); 611extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src, 612 ext2fs_generic_bitmap *dest); 613extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs); 614extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs); 615extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs); 616extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs); 617extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs, 618 const char *descr, 619 ext2fs_block_bitmap *ret); 620extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs, 621 const char *descr, 622 ext2fs_inode_bitmap *ret); 623extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap, 624 ext2_ino_t end, ext2_ino_t *oend); 625extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap, 626 blk_t end, blk_t *oend); 627extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap); 628extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap); 629extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs); 630extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs); 631extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end, 632 ext2fs_inode_bitmap bmap); 633extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end, 634 ext2fs_block_bitmap bmap); 635extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1, 636 ext2fs_block_bitmap bm2); 637extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1, 638 ext2fs_inode_bitmap bm2); 639extern errcode_t ext2fs_set_inode_bitmap_range(ext2fs_inode_bitmap bmap, 640 ext2_ino_t start, unsigned int num, 641 void *in); 642extern errcode_t ext2fs_get_inode_bitmap_range(ext2fs_inode_bitmap bmap, 643 ext2_ino_t start, unsigned int num, 644 void *out); 645extern errcode_t ext2fs_set_block_bitmap_range(ext2fs_block_bitmap bmap, 646 blk_t start, unsigned int num, 647 void *in); 648extern errcode_t ext2fs_get_block_bitmap_range(ext2fs_block_bitmap bmap, 649 blk_t start, unsigned int num, 650 void *out); 651 652 653/* block.c */ 654extern errcode_t ext2fs_block_iterate(ext2_filsys fs, 655 ext2_ino_t ino, 656 int flags, 657 char *block_buf, 658 int (*func)(ext2_filsys fs, 659 blk_t *blocknr, 660 int blockcnt, 661 void *priv_data), 662 void *priv_data); 663errcode_t ext2fs_block_iterate2(ext2_filsys fs, 664 ext2_ino_t ino, 665 int flags, 666 char *block_buf, 667 int (*func)(ext2_filsys fs, 668 blk_t *blocknr, 669 e2_blkcnt_t blockcnt, 670 blk_t ref_blk, 671 int ref_offset, 672 void *priv_data), 673 void *priv_data); 674 675/* bmap.c */ 676extern errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino, 677 struct ext2_inode *inode, 678 char *block_buf, int bmap_flags, 679 blk_t block, blk_t *phys_blk); 680extern errcode_t ext2fs_bmap2(ext2_filsys fs, ext2_ino_t ino, 681 struct ext2_inode *inode, 682 char *block_buf, int bmap_flags, blk64_t block, 683 int *ret_flags, blk64_t *phys_blk); 684 685#if 0 686/* bmove.c */ 687extern errcode_t ext2fs_move_blocks(ext2_filsys fs, 688 ext2fs_block_bitmap reserve, 689 ext2fs_block_bitmap alloc_map, 690 int flags); 691#endif 692 693/* check_desc.c */ 694extern errcode_t ext2fs_check_desc(ext2_filsys fs); 695 696/* closefs.c */ 697extern errcode_t ext2fs_close(ext2_filsys fs); 698extern errcode_t ext2fs_flush(ext2_filsys fs); 699extern int ext2fs_bg_has_super(ext2_filsys fs, int group_block); 700extern int ext2fs_super_and_bgd_loc(ext2_filsys fs, 701 dgrp_t group, 702 blk_t *ret_super_blk, 703 blk_t *ret_old_desc_blk, 704 blk_t *ret_new_desc_blk, 705 int *ret_meta_bg); 706extern void ext2fs_update_dynamic_rev(ext2_filsys fs); 707 708/* dblist.c */ 709 710extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs); 711extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist); 712extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ext2_ino_t ino, 713 blk_t blk, int blockcnt); 714extern void ext2fs_dblist_sort(ext2_dblist dblist, 715 EXT2_QSORT_TYPE (*sortfunc)(const void *, 716 const void *)); 717extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist, 718 int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info, 719 void *priv_data), 720 void *priv_data); 721extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ext2_ino_t ino, 722 blk_t blk, int blockcnt); 723extern errcode_t ext2fs_copy_dblist(ext2_dblist src, 724 ext2_dblist *dest); 725extern int ext2fs_dblist_count(ext2_dblist dblist); 726 727/* dblist_dir.c */ 728extern errcode_t 729 ext2fs_dblist_dir_iterate(ext2_dblist dblist, 730 int flags, 731 char *block_buf, 732 int (*func)(ext2_ino_t dir, 733 int entry, 734 struct ext2_dir_entry *dirent, 735 int offset, 736 int blocksize, 737 char *buf, 738 void *priv_data), 739 void *priv_data); 740 741/* dirblock.c */ 742extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block, 743 void *buf); 744extern errcode_t ext2fs_read_dir_block2(ext2_filsys fs, blk_t block, 745 void *buf, int flags); 746extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block, 747 void *buf); 748extern errcode_t ext2fs_write_dir_block2(ext2_filsys fs, blk_t block, 749 void *buf, int flags); 750 751/* dirhash.c */ 752extern errcode_t ext2fs_dirhash(int version, const char *name, int len, 753 const __u32 *seed, 754 ext2_dirhash_t *ret_hash, 755 ext2_dirhash_t *ret_minor_hash); 756 757 758/* dir_iterate.c */ 759extern errcode_t ext2fs_dir_iterate(ext2_filsys fs, 760 ext2_ino_t dir, 761 int flags, 762 char *block_buf, 763 int (*func)(struct ext2_dir_entry *dirent, 764 int offset, 765 int blocksize, 766 char *buf, 767 void *priv_data), 768 void *priv_data); 769extern errcode_t ext2fs_dir_iterate2(ext2_filsys fs, 770 ext2_ino_t dir, 771 int flags, 772 char *block_buf, 773 int (*func)(ext2_ino_t dir, 774 int entry, 775 struct ext2_dir_entry *dirent, 776 int offset, 777 int blocksize, 778 char *buf, 779 void *priv_data), 780 void *priv_data); 781 782/* dupfs.c */ 783extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest); 784 785/* expanddir.c */ 786extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir); 787 788/* ext_attr.c */ 789extern __u32 ext2fs_ext_attr_hash_entry(struct ext2_ext_attr_entry *entry, 790 void *data); 791extern errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf); 792extern errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block, 793 void *buf); 794extern errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk, 795 char *block_buf, 796 int adjust, __u32 *newcount); 797 798/* extent.c */ 799extern errcode_t ext2fs_extent_header_verify(void *ptr, int size); 800extern errcode_t ext2fs_extent_open(ext2_filsys fs, ext2_ino_t ino, 801 ext2_extent_handle_t *handle); 802extern errcode_t ext2fs_extent_get(ext2_extent_handle_t handle, 803 int flags, struct ext2fs_extent *extent); 804extern errcode_t ext2fs_extent_replace(ext2_extent_handle_t handle, int flags, 805 struct ext2fs_extent *extent); 806extern errcode_t ext2fs_extent_insert(ext2_extent_handle_t handle, int flags, 807 struct ext2fs_extent *extent); 808extern errcode_t ext2fs_extent_delete(ext2_extent_handle_t handle, int flags); 809extern errcode_t ext2fs_extent_get_info(ext2_extent_handle_t handle, 810 struct ext2_extent_info *info); 811extern errcode_t ext2fs_extent_goto(ext2_extent_handle_t handle, 812 blk64_t blk); 813 814/* fileio.c */ 815extern errcode_t ext2fs_file_open2(ext2_filsys fs, ext2_ino_t ino, 816 struct ext2_inode *inode, 817 int flags, ext2_file_t *ret); 818extern errcode_t ext2fs_file_open(ext2_filsys fs, ext2_ino_t ino, 819 int flags, ext2_file_t *ret); 820extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file); 821extern errcode_t ext2fs_file_close(ext2_file_t file); 822extern errcode_t ext2fs_file_flush(ext2_file_t file); 823extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf, 824 unsigned int wanted, unsigned int *got); 825extern errcode_t ext2fs_file_write(ext2_file_t file, const void *buf, 826 unsigned int nbytes, unsigned int *written); 827extern errcode_t ext2fs_file_llseek(ext2_file_t file, __u64 offset, 828 int whence, __u64 *ret_pos); 829extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset, 830 int whence, ext2_off_t *ret_pos); 831errcode_t ext2fs_file_get_lsize(ext2_file_t file, __u64 *ret_size); 832extern ext2_off_t ext2fs_file_get_size(ext2_file_t file); 833extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size); 834 835/* finddev.c */ 836extern char *ext2fs_find_block_device(dev_t device); 837 838/* flushb.c */ 839extern errcode_t ext2fs_sync_device(int fd, int flushb); 840 841/* freefs.c */ 842extern void ext2fs_free(ext2_filsys fs); 843extern void ext2fs_free_dblist(ext2_dblist dblist); 844extern void ext2fs_badblocks_list_free(ext2_badblocks_list bb); 845extern void ext2fs_u32_list_free(ext2_u32_list bb); 846 847/* gen_bitmap.c */ 848extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap); 849extern errcode_t ext2fs_make_generic_bitmap(errcode_t magic, ext2_filsys fs, 850 __u32 start, __u32 end, 851 __u32 real_end, 852 const char *descr, char *init_map, 853 ext2fs_generic_bitmap *ret); 854extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start, 855 __u32 end, 856 __u32 real_end, 857 const char *descr, 858 ext2fs_generic_bitmap *ret); 859extern errcode_t ext2fs_copy_generic_bitmap(ext2fs_generic_bitmap src, 860 ext2fs_generic_bitmap *dest); 861extern void ext2fs_clear_generic_bitmap(ext2fs_generic_bitmap bitmap); 862extern errcode_t ext2fs_fudge_generic_bitmap_end(ext2fs_inode_bitmap bitmap, 863 errcode_t magic, 864 errcode_t neq, 865 ext2_ino_t end, 866 ext2_ino_t *oend); 867extern void ext2fs_set_generic_bitmap_padding(ext2fs_generic_bitmap map); 868extern errcode_t ext2fs_resize_generic_bitmap(errcode_t magic, 869 __u32 new_end, 870 __u32 new_real_end, 871 ext2fs_generic_bitmap bmap); 872extern errcode_t ext2fs_compare_generic_bitmap(errcode_t magic, errcode_t neq, 873 ext2fs_generic_bitmap bm1, 874 ext2fs_generic_bitmap bm2); 875extern errcode_t ext2fs_get_generic_bitmap_range(ext2fs_generic_bitmap bmap, 876 errcode_t magic, 877 __u32 start, __u32 num, 878 void *out); 879extern errcode_t ext2fs_set_generic_bitmap_range(ext2fs_generic_bitmap bmap, 880 errcode_t magic, 881 __u32 start, __u32 num, 882 void *in); 883 884/* getsize.c */ 885extern errcode_t ext2fs_get_device_size(const char *file, int blocksize, 886 blk_t *retblocks); 887 888/* getsectsize.c */ 889errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize); 890 891/* imager.c */ 892extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags); 893extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags); 894extern errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd, int flags); 895extern errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd, int flags); 896extern errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags); 897extern errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags); 898 899/* ind_block.c */ 900errcode_t ext2fs_read_ind_block(ext2_filsys fs, blk_t blk, void *buf); 901errcode_t ext2fs_write_ind_block(ext2_filsys fs, blk_t blk, void *buf); 902 903/* initialize.c */ 904extern errcode_t ext2fs_initialize(const char *name, int flags, 905 struct ext2_super_block *param, 906 io_manager manager, ext2_filsys *ret_fs); 907 908/* icount.c */ 909extern void ext2fs_free_icount(ext2_icount_t icount); 910extern errcode_t ext2fs_create_icount_tdb(ext2_filsys fs, char *tdb_dir, 911 int flags, ext2_icount_t *ret); 912extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags, 913 unsigned int size, 914 ext2_icount_t hint, ext2_icount_t *ret); 915extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags, 916 unsigned int size, 917 ext2_icount_t *ret); 918extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ext2_ino_t ino, 919 __u16 *ret); 920extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ext2_ino_t ino, 921 __u16 *ret); 922extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ext2_ino_t ino, 923 __u16 *ret); 924extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ext2_ino_t ino, 925 __u16 count); 926extern ext2_ino_t ext2fs_get_icount_size(ext2_icount_t icount); 927errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *); 928 929/* inode.c */ 930extern errcode_t ext2fs_flush_icache(ext2_filsys fs); 931extern errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan, 932 ext2_ino_t *ino, 933 struct ext2_inode *inode, 934 int bufsize); 935extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks, 936 ext2_inode_scan *ret_scan); 937extern void ext2fs_close_inode_scan(ext2_inode_scan scan); 938extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino, 939 struct ext2_inode *inode); 940extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan, 941 int group); 942extern void ext2fs_set_inode_callback 943 (ext2_inode_scan scan, 944 errcode_t (*done_group)(ext2_filsys fs, 945 ext2_inode_scan scan, 946 dgrp_t group, 947 void * priv_data), 948 void *done_group_data); 949extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags, 950 int clear_flags); 951extern errcode_t ext2fs_read_inode_full(ext2_filsys fs, ext2_ino_t ino, 952 struct ext2_inode * inode, 953 int bufsize); 954extern errcode_t ext2fs_read_inode (ext2_filsys fs, ext2_ino_t ino, 955 struct ext2_inode * inode); 956extern errcode_t ext2fs_write_inode_full(ext2_filsys fs, ext2_ino_t ino, 957 struct ext2_inode * inode, 958 int bufsize); 959extern errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino, 960 struct ext2_inode * inode); 961extern errcode_t ext2fs_write_new_inode(ext2_filsys fs, ext2_ino_t ino, 962 struct ext2_inode * inode); 963extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); 964extern errcode_t ext2fs_check_directory(ext2_filsys fs, ext2_ino_t ino); 965 966/* inode_io.c */ 967extern io_manager inode_io_manager; 968extern errcode_t ext2fs_inode_io_intern(ext2_filsys fs, ext2_ino_t ino, 969 char **name); 970extern errcode_t ext2fs_inode_io_intern2(ext2_filsys fs, ext2_ino_t ino, 971 struct ext2_inode *inode, 972 char **name); 973 974/* ismounted.c */ 975extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags); 976extern errcode_t ext2fs_check_mount_point(const char *device, int *mount_flags, 977 char *mtpt, int mtlen); 978 979/* namei.c */ 980extern errcode_t ext2fs_lookup(ext2_filsys fs, ext2_ino_t dir, const char *name, 981 int namelen, char *buf, ext2_ino_t *inode); 982extern errcode_t ext2fs_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 983 const char *name, ext2_ino_t *inode); 984errcode_t ext2fs_namei_follow(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 985 const char *name, ext2_ino_t *inode); 986extern errcode_t ext2fs_follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 987 ext2_ino_t inode, ext2_ino_t *res_inode); 988 989/* native.c */ 990int ext2fs_native_flag(void); 991 992/* newdir.c */ 993extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino, 994 ext2_ino_t parent_ino, char **block); 995 996/* mkdir.c */ 997extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum, 998 const char *name); 999 1000/* mkjournal.c */ 1001extern errcode_t ext2fs_create_journal_superblock(ext2_filsys fs, 1002 __u32 size, int flags, 1003 char **ret_jsb); 1004extern errcode_t ext2fs_add_journal_device(ext2_filsys fs, 1005 ext2_filsys journal_dev); 1006extern errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t size, 1007 int flags); 1008extern int ext2fs_default_journal_size(__u64 blocks); 1009 1010/* openfs.c */ 1011extern errcode_t ext2fs_open(const char *name, int flags, int superblock, 1012 unsigned int block_size, io_manager manager, 1013 ext2_filsys *ret_fs); 1014extern errcode_t ext2fs_open2(const char *name, const char *io_options, 1015 int flags, int superblock, 1016 unsigned int block_size, io_manager manager, 1017 ext2_filsys *ret_fs); 1018extern blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block, 1019 dgrp_t i); 1020errcode_t ext2fs_get_data_io(ext2_filsys fs, io_channel *old_io); 1021errcode_t ext2fs_set_data_io(ext2_filsys fs, io_channel new_io); 1022errcode_t ext2fs_rewrite_to_io(ext2_filsys fs, io_channel new_io); 1023 1024/* get_pathname.c */ 1025extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino, 1026 char **name); 1027 1028/* link.c */ 1029errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name, 1030 ext2_ino_t ino, int flags); 1031errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir, const char *name, 1032 ext2_ino_t ino, int flags); 1033 1034/* read_bb.c */ 1035extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs, 1036 ext2_badblocks_list *bb_list); 1037 1038/* read_bb_file.c */ 1039extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f, 1040 ext2_badblocks_list *bb_list, 1041 void *priv_data, 1042 void (*invalid)(ext2_filsys fs, 1043 blk_t blk, 1044 char *badstr, 1045 void *priv_data)); 1046extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f, 1047 ext2_badblocks_list *bb_list, 1048 void (*invalid)(ext2_filsys fs, 1049 blk_t blk)); 1050 1051/* res_gdt.c */ 1052extern errcode_t ext2fs_create_resize_inode(ext2_filsys fs); 1053 1054/* swapfs.c */ 1055extern void ext2fs_swap_ext_attr(char *to, char *from, int bufsize, 1056 int has_header); 1057extern void ext2fs_swap_ext_attr_header(struct ext2_ext_attr_header *to_header, 1058 struct ext2_ext_attr_header *from_hdr); 1059extern void ext2fs_swap_ext_attr_entry(struct ext2_ext_attr_entry *to_entry, 1060 struct ext2_ext_attr_entry *from_entry); 1061extern void ext2fs_swap_super(struct ext2_super_block * super); 1062extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp); 1063extern void ext2fs_swap_inode_full(ext2_filsys fs, struct ext2_inode_large *t, 1064 struct ext2_inode_large *f, int hostorder, 1065 int bufsize); 1066extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t, 1067 struct ext2_inode *f, int hostorder); 1068 1069/* valid_blk.c */ 1070extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode); 1071 1072/* version.c */ 1073extern int ext2fs_parse_version_string(const char *ver_string); 1074extern int ext2fs_get_library_version(const char **ver_string, 1075 const char **date_string); 1076 1077/* write_bb_file.c */ 1078extern errcode_t ext2fs_write_bb_FILE(ext2_badblocks_list bb_list, 1079 unsigned int flags, 1080 FILE *f); 1081 1082 1083/* inline functions */ 1084extern errcode_t ext2fs_get_mem(unsigned long size, void *ptr); 1085extern errcode_t ext2fs_get_array(unsigned long count, unsigned long size, void *ptr); 1086extern errcode_t ext2fs_free_mem(void *ptr); 1087extern errcode_t ext2fs_resize_mem(unsigned long old_size, 1088 unsigned long size, void *ptr); 1089extern void ext2fs_mark_super_dirty(ext2_filsys fs); 1090extern void ext2fs_mark_changed(ext2_filsys fs); 1091extern int ext2fs_test_changed(ext2_filsys fs); 1092extern void ext2fs_mark_valid(ext2_filsys fs); 1093extern void ext2fs_unmark_valid(ext2_filsys fs); 1094extern int ext2fs_test_valid(ext2_filsys fs); 1095extern void ext2fs_mark_ib_dirty(ext2_filsys fs); 1096extern void ext2fs_mark_bb_dirty(ext2_filsys fs); 1097extern int ext2fs_test_ib_dirty(ext2_filsys fs); 1098extern int ext2fs_test_bb_dirty(ext2_filsys fs); 1099extern int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk); 1100extern int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino); 1101extern blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group); 1102extern blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group); 1103extern blk_t ext2fs_inode_data_blocks(ext2_filsys fs, 1104 struct ext2_inode *inode); 1105extern unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b); 1106 1107/* 1108 * The actual inlined functions definitions themselves... 1109 * 1110 * If NO_INLINE_FUNCS is defined, then we won't try to do inline 1111 * functions at all! 1112 */ 1113#if (defined(INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS)) 1114#ifdef INCLUDE_INLINE_FUNCS 1115#define _INLINE_ extern 1116#else 1117#ifdef __GNUC__ 1118#define _INLINE_ extern __inline__ 1119#else /* For Watcom C */ 1120#define _INLINE_ extern inline 1121#endif 1122#endif 1123 1124#ifndef EXT2_CUSTOM_MEMORY_ROUTINES 1125#include <string.h> 1126/* 1127 * Allocate memory 1128 */ 1129_INLINE_ errcode_t ext2fs_get_mem(unsigned long size, void *ptr) 1130{ 1131 void *pp; 1132 1133 pp = malloc(size); 1134 if (!pp) 1135 return EXT2_ET_NO_MEMORY; 1136 memcpy(ptr, &pp, sizeof (pp)); 1137 return 0; 1138} 1139 1140_INLINE_ errcode_t ext2fs_get_array(unsigned long count, unsigned long size, void *ptr) 1141{ 1142 if (count && (-1UL)/count<size) 1143 return EXT2_ET_NO_MEMORY; //maybe define EXT2_ET_OVERFLOW ? 1144 return ext2fs_get_mem(count*size, ptr); 1145} 1146 1147/* 1148 * Free memory 1149 */ 1150_INLINE_ errcode_t ext2fs_free_mem(void *ptr) 1151{ 1152 void *p; 1153 1154 memcpy(&p, ptr, sizeof(p)); 1155 free(p); 1156 p = 0; 1157 memcpy(ptr, &p, sizeof(p)); 1158 return 0; 1159} 1160 1161/* 1162 * Resize memory 1163 */ 1164_INLINE_ errcode_t ext2fs_resize_mem(unsigned long EXT2FS_ATTR((unused)) old_size, 1165 unsigned long size, void *ptr) 1166{ 1167 void *p; 1168 1169 /* Use "memcpy" for pointer assignments here to avoid problems 1170 * with C99 strict type aliasing rules. */ 1171 memcpy(&p, ptr, sizeof(p)); 1172 p = realloc(p, size); 1173 if (!p) 1174 return EXT2_ET_NO_MEMORY; 1175 memcpy(ptr, &p, sizeof(p)); 1176 return 0; 1177} 1178#endif /* Custom memory routines */ 1179 1180/* 1181 * Mark a filesystem superblock as dirty 1182 */ 1183_INLINE_ void ext2fs_mark_super_dirty(ext2_filsys fs) 1184{ 1185 fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_CHANGED; 1186} 1187 1188/* 1189 * Mark a filesystem as changed 1190 */ 1191_INLINE_ void ext2fs_mark_changed(ext2_filsys fs) 1192{ 1193 fs->flags |= EXT2_FLAG_CHANGED; 1194} 1195 1196/* 1197 * Check to see if a filesystem has changed 1198 */ 1199_INLINE_ int ext2fs_test_changed(ext2_filsys fs) 1200{ 1201 return (fs->flags & EXT2_FLAG_CHANGED); 1202} 1203 1204/* 1205 * Mark a filesystem as valid 1206 */ 1207_INLINE_ void ext2fs_mark_valid(ext2_filsys fs) 1208{ 1209 fs->flags |= EXT2_FLAG_VALID; 1210} 1211 1212/* 1213 * Mark a filesystem as NOT valid 1214 */ 1215_INLINE_ void ext2fs_unmark_valid(ext2_filsys fs) 1216{ 1217 fs->flags &= ~EXT2_FLAG_VALID; 1218} 1219 1220/* 1221 * Check to see if a filesystem is valid 1222 */ 1223_INLINE_ int ext2fs_test_valid(ext2_filsys fs) 1224{ 1225 return (fs->flags & EXT2_FLAG_VALID); 1226} 1227 1228/* 1229 * Mark the inode bitmap as dirty 1230 */ 1231_INLINE_ void ext2fs_mark_ib_dirty(ext2_filsys fs) 1232{ 1233 fs->flags |= EXT2_FLAG_IB_DIRTY | EXT2_FLAG_CHANGED; 1234} 1235 1236/* 1237 * Mark the block bitmap as dirty 1238 */ 1239_INLINE_ void ext2fs_mark_bb_dirty(ext2_filsys fs) 1240{ 1241 fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_CHANGED; 1242} 1243 1244/* 1245 * Check to see if a filesystem's inode bitmap is dirty 1246 */ 1247_INLINE_ int ext2fs_test_ib_dirty(ext2_filsys fs) 1248{ 1249 return (fs->flags & EXT2_FLAG_IB_DIRTY); 1250} 1251 1252/* 1253 * Check to see if a filesystem's block bitmap is dirty 1254 */ 1255_INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs) 1256{ 1257 return (fs->flags & EXT2_FLAG_BB_DIRTY); 1258} 1259 1260/* 1261 * Return the group # of a block 1262 */ 1263_INLINE_ int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk) 1264{ 1265 return (blk - fs->super->s_first_data_block) / 1266 fs->super->s_blocks_per_group; 1267} 1268 1269/* 1270 * Return the group # of an inode number 1271 */ 1272_INLINE_ int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino) 1273{ 1274 return (ino - 1) / fs->super->s_inodes_per_group; 1275} 1276 1277/* 1278 * Return the first block (inclusive) in a group 1279 */ 1280_INLINE_ blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group) 1281{ 1282 return fs->super->s_first_data_block + 1283 (group * fs->super->s_blocks_per_group); 1284} 1285 1286/* 1287 * Return the last block (inclusive) in a group 1288 */ 1289_INLINE_ blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group) 1290{ 1291 return (group == fs->group_desc_count - 1 ? 1292 fs->super->s_blocks_count - 1 : 1293 ext2fs_group_first_block(fs, group) + 1294 (fs->super->s_blocks_per_group - 1)); 1295} 1296 1297_INLINE_ blk_t ext2fs_inode_data_blocks(ext2_filsys fs, 1298 struct ext2_inode *inode) 1299{ 1300 return inode->i_blocks - 1301 (inode->i_file_acl ? fs->blocksize >> 9 : 0); 1302} 1303 1304/* 1305 * This is an efficient, overflow safe way of calculating ceil((1.0 * a) / b) 1306 */ 1307_INLINE_ unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b) 1308{ 1309 if (!a) 1310 return 0; 1311 return ((a - 1) / b) + 1; 1312} 1313#undef _INLINE_ 1314#endif 1315 1316#ifdef __cplusplus 1317} 1318#endif 1319 1320#endif /* _EXT2FS_EXT2FS_H */ 1321