ext2fs.h revision 1ca1059fd0126fd2c065f272a566c18f14bab16d
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 */ 335 336#define EXT2_EXTENT_INSERT_AFTER 0x0001 337 338/* 339 * Data structure returned by ext2fs_extent_get_info() 340 */ 341struct ext2_extent_info { 342 int curr_entry; 343 int curr_level; 344 int num_entries; 345 int max_entries; 346 int max_depth; 347 int bytes_avail; 348 blk64_t max_lblk; 349 blk64_t max_pblk; 350 __u32 max_len; 351 __u32 max_uninit_len; 352}; 353 354/* 355 * Flags for directory block reading and writing functions 356 */ 357#define EXT2_DIRBLOCK_V2_STRUCT 0x0001 358 359/* 360 * Return flags for the directory iterator functions 361 */ 362#define DIRENT_CHANGED 1 363#define DIRENT_ABORT 2 364#define DIRENT_ERROR 3 365 366/* 367 * Directory iterator flags 368 */ 369 370#define DIRENT_FLAG_INCLUDE_EMPTY 1 371#define DIRENT_FLAG_INCLUDE_REMOVED 2 372 373#define DIRENT_DOT_FILE 1 374#define DIRENT_DOT_DOT_FILE 2 375#define DIRENT_OTHER_FILE 3 376#define DIRENT_DELETED_FILE 4 377 378/* 379 * Inode scan definitions 380 */ 381typedef struct ext2_struct_inode_scan *ext2_inode_scan; 382 383/* 384 * ext2fs_scan flags 385 */ 386#define EXT2_SF_CHK_BADBLOCKS 0x0001 387#define EXT2_SF_BAD_INODE_BLK 0x0002 388#define EXT2_SF_BAD_EXTRA_BYTES 0x0004 389#define EXT2_SF_SKIP_MISSING_ITABLE 0x0008 390#define EXT2_SF_DO_LAZY 0x0010 391 392/* 393 * ext2fs_check_if_mounted flags 394 */ 395#define EXT2_MF_MOUNTED 1 396#define EXT2_MF_ISROOT 2 397#define EXT2_MF_READONLY 4 398#define EXT2_MF_SWAP 8 399#define EXT2_MF_BUSY 16 400 401/* 402 * Ext2/linux mode flags. We define them here so that we don't need 403 * to depend on the OS's sys/stat.h, since we may be compiling on a 404 * non-Linux system. 405 */ 406#define LINUX_S_IFMT 00170000 407#define LINUX_S_IFSOCK 0140000 408#define LINUX_S_IFLNK 0120000 409#define LINUX_S_IFREG 0100000 410#define LINUX_S_IFBLK 0060000 411#define LINUX_S_IFDIR 0040000 412#define LINUX_S_IFCHR 0020000 413#define LINUX_S_IFIFO 0010000 414#define LINUX_S_ISUID 0004000 415#define LINUX_S_ISGID 0002000 416#define LINUX_S_ISVTX 0001000 417 418#define LINUX_S_IRWXU 00700 419#define LINUX_S_IRUSR 00400 420#define LINUX_S_IWUSR 00200 421#define LINUX_S_IXUSR 00100 422 423#define LINUX_S_IRWXG 00070 424#define LINUX_S_IRGRP 00040 425#define LINUX_S_IWGRP 00020 426#define LINUX_S_IXGRP 00010 427 428#define LINUX_S_IRWXO 00007 429#define LINUX_S_IROTH 00004 430#define LINUX_S_IWOTH 00002 431#define LINUX_S_IXOTH 00001 432 433#define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK) 434#define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG) 435#define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR) 436#define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR) 437#define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK) 438#define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO) 439#define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK) 440 441/* 442 * ext2 size of an inode 443 */ 444#define EXT2_I_SIZE(i) ((i)->i_size | ((__u64) (i)->i_size_high << 32)) 445 446/* 447 * ext2_icount_t abstraction 448 */ 449#define EXT2_ICOUNT_OPT_INCREMENT 0x01 450 451typedef struct ext2_icount *ext2_icount_t; 452 453/* 454 * Flags for ext2fs_bmap 455 */ 456#define BMAP_ALLOC 0x0001 457#define BMAP_SET 0x0002 458 459/* 460 * Returned flags from ext2fs_bmap 461 */ 462#define BMAP_RET_UNINIT 0x0001 463 464/* 465 * Flags for imager.c functions 466 */ 467#define IMAGER_FLAG_INODEMAP 1 468#define IMAGER_FLAG_SPARSEWRITE 2 469 470/* 471 * For checking structure magic numbers... 472 */ 473 474#define EXT2_CHECK_MAGIC(struct, code) \ 475 if ((struct)->magic != (code)) return (code) 476 477 478/* 479 * For ext2 compression support 480 */ 481#define EXT2FS_COMPRESSED_BLKADDR ((blk_t) -1) 482#define HOLE_BLKADDR(_b) ((_b) == 0 || (_b) == EXT2FS_COMPRESSED_BLKADDR) 483 484/* 485 * Features supported by this version of the library 486 */ 487#define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\ 488 EXT2_FEATURE_COMPAT_IMAGIC_INODES|\ 489 EXT3_FEATURE_COMPAT_HAS_JOURNAL|\ 490 EXT2_FEATURE_COMPAT_RESIZE_INODE|\ 491 EXT2_FEATURE_COMPAT_DIR_INDEX|\ 492 EXT2_FEATURE_COMPAT_LAZY_BG|\ 493 EXT2_FEATURE_COMPAT_EXT_ATTR) 494 495/* This #ifdef is temporary until compression is fully supported */ 496#ifdef ENABLE_COMPRESSION 497#ifndef I_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL 498/* If the below warning bugs you, then have 499 `CPPFLAGS=-DI_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL' in your 500 environment at configure time. */ 501 #warning "Compression support is experimental" 502#endif 503#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 504 EXT2_FEATURE_INCOMPAT_COMPRESSION|\ 505 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 506 EXT2_FEATURE_INCOMPAT_META_BG|\ 507 EXT3_FEATURE_INCOMPAT_RECOVER|\ 508 EXT3_FEATURE_INCOMPAT_EXTENTS|\ 509 EXT4_FEATURE_INCOMPAT_FLEX_BG) 510#else 511#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 512 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 513 EXT2_FEATURE_INCOMPAT_META_BG|\ 514 EXT3_FEATURE_INCOMPAT_RECOVER|\ 515 EXT3_FEATURE_INCOMPAT_EXTENTS|\ 516 EXT4_FEATURE_INCOMPAT_FLEX_BG) 517#endif 518#define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\ 519 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|\ 520 EXT2_FEATURE_RO_COMPAT_LARGE_FILE|\ 521 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|\ 522 EXT4_FEATURE_RO_COMPAT_GDT_CSUM) 523 524/* 525 * These features are only allowed if EXT2_FLAG_SOFTSUPP_FEATURES is passed 526 * to ext2fs_openfs() 527 */ 528#define EXT2_LIB_SOFTSUPP_INCOMPAT (0) 529#define EXT2_LIB_SOFTSUPP_RO_COMPAT (EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE) 530 531/* 532 * function prototypes 533 */ 534 535/* alloc.c */ 536extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode, 537 ext2fs_inode_bitmap map, ext2_ino_t *ret); 538extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal, 539 ext2fs_block_bitmap map, blk_t *ret); 540extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start, 541 blk_t finish, int num, 542 ext2fs_block_bitmap map, 543 blk_t *ret); 544extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal, 545 char *block_buf, blk_t *ret); 546 547/* alloc_sb.c */ 548extern int ext2fs_reserve_super_and_bgd(ext2_filsys fs, 549 dgrp_t group, 550 ext2fs_block_bitmap bmap); 551 552/* alloc_stats.c */ 553void ext2fs_inode_alloc_stats(ext2_filsys fs, ext2_ino_t ino, int inuse); 554void ext2fs_inode_alloc_stats2(ext2_filsys fs, ext2_ino_t ino, 555 int inuse, int isdir); 556void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse); 557 558/* alloc_tables.c */ 559extern errcode_t ext2fs_allocate_tables(ext2_filsys fs); 560extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group, 561 ext2fs_block_bitmap bmap); 562 563/* badblocks.c */ 564extern errcode_t ext2fs_u32_list_create(ext2_u32_list *ret, int size); 565extern errcode_t ext2fs_u32_list_add(ext2_u32_list bb, __u32 blk); 566extern int ext2fs_u32_list_find(ext2_u32_list bb, __u32 blk); 567extern int ext2fs_u32_list_test(ext2_u32_list bb, blk_t blk); 568extern errcode_t ext2fs_u32_list_iterate_begin(ext2_u32_list bb, 569 ext2_u32_iterate *ret); 570extern int ext2fs_u32_list_iterate(ext2_u32_iterate iter, blk_t *blk); 571extern void ext2fs_u32_list_iterate_end(ext2_u32_iterate iter); 572extern errcode_t ext2fs_u32_copy(ext2_u32_list src, ext2_u32_list *dest); 573extern int ext2fs_u32_list_equal(ext2_u32_list bb1, ext2_u32_list bb2); 574 575extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret, 576 int size); 577extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb, 578 blk_t blk); 579extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb, 580 blk_t blk); 581extern int ext2fs_u32_list_del(ext2_u32_list bb, __u32 blk); 582extern void ext2fs_badblocks_list_del(ext2_u32_list bb, __u32 blk); 583extern errcode_t 584 ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb, 585 ext2_badblocks_iterate *ret); 586extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter, 587 blk_t *blk); 588extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter); 589extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src, 590 ext2_badblocks_list *dest); 591extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1, 592 ext2_badblocks_list bb2); 593extern int ext2fs_u32_list_count(ext2_u32_list bb); 594 595/* bb_compat */ 596extern errcode_t badblocks_list_create(badblocks_list *ret, int size); 597extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk); 598extern int badblocks_list_test(badblocks_list bb, blk_t blk); 599extern errcode_t badblocks_list_iterate_begin(badblocks_list bb, 600 badblocks_iterate *ret); 601extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk); 602extern void badblocks_list_iterate_end(badblocks_iterate iter); 603extern void badblocks_list_free(badblocks_list bb); 604 605/* bb_inode.c */ 606extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs, 607 ext2_badblocks_list bb_list); 608 609/* bitmaps.c */ 610extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap); 611extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap); 612extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src, 613 ext2fs_generic_bitmap *dest); 614extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs); 615extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs); 616extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs); 617extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs); 618extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs, 619 const char *descr, 620 ext2fs_block_bitmap *ret); 621extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs, 622 const char *descr, 623 ext2fs_inode_bitmap *ret); 624extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap, 625 ext2_ino_t end, ext2_ino_t *oend); 626extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap, 627 blk_t end, blk_t *oend); 628extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap); 629extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap); 630extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs); 631extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs); 632extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end, 633 ext2fs_inode_bitmap bmap); 634extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end, 635 ext2fs_block_bitmap bmap); 636extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1, 637 ext2fs_block_bitmap bm2); 638extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1, 639 ext2fs_inode_bitmap bm2); 640extern errcode_t ext2fs_set_inode_bitmap_range(ext2fs_inode_bitmap bmap, 641 ext2_ino_t start, unsigned int num, 642 void *in); 643extern errcode_t ext2fs_get_inode_bitmap_range(ext2fs_inode_bitmap bmap, 644 ext2_ino_t start, unsigned int num, 645 void *out); 646extern errcode_t ext2fs_set_block_bitmap_range(ext2fs_block_bitmap bmap, 647 blk_t start, unsigned int num, 648 void *in); 649extern errcode_t ext2fs_get_block_bitmap_range(ext2fs_block_bitmap bmap, 650 blk_t start, unsigned int num, 651 void *out); 652 653 654/* block.c */ 655extern errcode_t ext2fs_block_iterate(ext2_filsys fs, 656 ext2_ino_t ino, 657 int flags, 658 char *block_buf, 659 int (*func)(ext2_filsys fs, 660 blk_t *blocknr, 661 int blockcnt, 662 void *priv_data), 663 void *priv_data); 664errcode_t ext2fs_block_iterate2(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 e2_blkcnt_t blockcnt, 671 blk_t ref_blk, 672 int ref_offset, 673 void *priv_data), 674 void *priv_data); 675 676/* bmap.c */ 677extern errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino, 678 struct ext2_inode *inode, 679 char *block_buf, int bmap_flags, 680 blk_t block, blk_t *phys_blk); 681extern errcode_t ext2fs_bmap2(ext2_filsys fs, ext2_ino_t ino, 682 struct ext2_inode *inode, 683 char *block_buf, int bmap_flags, blk64_t block, 684 int *ret_flags, blk64_t *phys_blk); 685 686#if 0 687/* bmove.c */ 688extern errcode_t ext2fs_move_blocks(ext2_filsys fs, 689 ext2fs_block_bitmap reserve, 690 ext2fs_block_bitmap alloc_map, 691 int flags); 692#endif 693 694/* check_desc.c */ 695extern errcode_t ext2fs_check_desc(ext2_filsys fs); 696 697/* closefs.c */ 698extern errcode_t ext2fs_close(ext2_filsys fs); 699extern errcode_t ext2fs_flush(ext2_filsys fs); 700extern int ext2fs_bg_has_super(ext2_filsys fs, int group_block); 701extern int ext2fs_super_and_bgd_loc(ext2_filsys fs, 702 dgrp_t group, 703 blk_t *ret_super_blk, 704 blk_t *ret_old_desc_blk, 705 blk_t *ret_new_desc_blk, 706 int *ret_meta_bg); 707extern void ext2fs_update_dynamic_rev(ext2_filsys fs); 708 709/* csum.c */ 710extern void ext2fs_group_desc_csum_set(ext2_filsys fs, dgrp_t group); 711extern int ext2fs_group_desc_csum_verify(ext2_filsys fs, dgrp_t group); 712extern errcode_t ext2fs_set_gdt_csum(ext2_filsys fs); 713 714/* dblist.c */ 715 716extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs); 717extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist); 718extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ext2_ino_t ino, 719 blk_t blk, int blockcnt); 720extern void ext2fs_dblist_sort(ext2_dblist dblist, 721 EXT2_QSORT_TYPE (*sortfunc)(const void *, 722 const void *)); 723extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist, 724 int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info, 725 void *priv_data), 726 void *priv_data); 727extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ext2_ino_t ino, 728 blk_t blk, int blockcnt); 729extern errcode_t ext2fs_copy_dblist(ext2_dblist src, 730 ext2_dblist *dest); 731extern int ext2fs_dblist_count(ext2_dblist dblist); 732extern errcode_t ext2fs_dblist_get_last(ext2_dblist dblist, 733 struct ext2_db_entry **entry); 734extern errcode_t ext2fs_dblist_drop_last(ext2_dblist dblist); 735 736/* dblist_dir.c */ 737extern errcode_t 738 ext2fs_dblist_dir_iterate(ext2_dblist dblist, 739 int flags, 740 char *block_buf, 741 int (*func)(ext2_ino_t dir, 742 int entry, 743 struct ext2_dir_entry *dirent, 744 int offset, 745 int blocksize, 746 char *buf, 747 void *priv_data), 748 void *priv_data); 749 750/* dirblock.c */ 751extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block, 752 void *buf); 753extern errcode_t ext2fs_read_dir_block2(ext2_filsys fs, blk_t block, 754 void *buf, int flags); 755extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block, 756 void *buf); 757extern errcode_t ext2fs_write_dir_block2(ext2_filsys fs, blk_t block, 758 void *buf, int flags); 759 760/* dirhash.c */ 761extern errcode_t ext2fs_dirhash(int version, const char *name, int len, 762 const __u32 *seed, 763 ext2_dirhash_t *ret_hash, 764 ext2_dirhash_t *ret_minor_hash); 765 766 767/* dir_iterate.c */ 768extern errcode_t ext2fs_dir_iterate(ext2_filsys fs, 769 ext2_ino_t dir, 770 int flags, 771 char *block_buf, 772 int (*func)(struct ext2_dir_entry *dirent, 773 int offset, 774 int blocksize, 775 char *buf, 776 void *priv_data), 777 void *priv_data); 778extern errcode_t ext2fs_dir_iterate2(ext2_filsys fs, 779 ext2_ino_t dir, 780 int flags, 781 char *block_buf, 782 int (*func)(ext2_ino_t dir, 783 int entry, 784 struct ext2_dir_entry *dirent, 785 int offset, 786 int blocksize, 787 char *buf, 788 void *priv_data), 789 void *priv_data); 790 791/* dupfs.c */ 792extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest); 793 794/* expanddir.c */ 795extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir); 796 797/* ext_attr.c */ 798extern __u32 ext2fs_ext_attr_hash_entry(struct ext2_ext_attr_entry *entry, 799 void *data); 800extern errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf); 801extern errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block, 802 void *buf); 803extern errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk, 804 char *block_buf, 805 int adjust, __u32 *newcount); 806 807/* extent.c */ 808extern errcode_t ext2fs_extent_header_verify(void *ptr, int size); 809extern errcode_t ext2fs_extent_open(ext2_filsys fs, ext2_ino_t ino, 810 ext2_extent_handle_t *handle); 811extern void ext2fs_extent_free(ext2_extent_handle_t handle); 812extern errcode_t ext2fs_extent_get(ext2_extent_handle_t handle, 813 int flags, struct ext2fs_extent *extent); 814extern errcode_t ext2fs_extent_replace(ext2_extent_handle_t handle, int flags, 815 struct ext2fs_extent *extent); 816extern errcode_t ext2fs_extent_insert(ext2_extent_handle_t handle, int flags, 817 struct ext2fs_extent *extent); 818extern errcode_t ext2fs_extent_delete(ext2_extent_handle_t handle, int flags); 819extern errcode_t ext2fs_extent_get_info(ext2_extent_handle_t handle, 820 struct ext2_extent_info *info); 821extern errcode_t ext2fs_extent_goto(ext2_extent_handle_t handle, 822 blk64_t blk); 823 824/* fileio.c */ 825extern errcode_t ext2fs_file_open2(ext2_filsys fs, ext2_ino_t ino, 826 struct ext2_inode *inode, 827 int flags, ext2_file_t *ret); 828extern errcode_t ext2fs_file_open(ext2_filsys fs, ext2_ino_t ino, 829 int flags, ext2_file_t *ret); 830extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file); 831extern errcode_t ext2fs_file_close(ext2_file_t file); 832extern errcode_t ext2fs_file_flush(ext2_file_t file); 833extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf, 834 unsigned int wanted, unsigned int *got); 835extern errcode_t ext2fs_file_write(ext2_file_t file, const void *buf, 836 unsigned int nbytes, unsigned int *written); 837extern errcode_t ext2fs_file_llseek(ext2_file_t file, __u64 offset, 838 int whence, __u64 *ret_pos); 839extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset, 840 int whence, ext2_off_t *ret_pos); 841errcode_t ext2fs_file_get_lsize(ext2_file_t file, __u64 *ret_size); 842extern ext2_off_t ext2fs_file_get_size(ext2_file_t file); 843extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size); 844 845/* finddev.c */ 846extern char *ext2fs_find_block_device(dev_t device); 847 848/* flushb.c */ 849extern errcode_t ext2fs_sync_device(int fd, int flushb); 850 851/* freefs.c */ 852extern void ext2fs_free(ext2_filsys fs); 853extern void ext2fs_free_dblist(ext2_dblist dblist); 854extern void ext2fs_badblocks_list_free(ext2_badblocks_list bb); 855extern void ext2fs_u32_list_free(ext2_u32_list bb); 856 857/* gen_bitmap.c */ 858extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap); 859extern errcode_t ext2fs_make_generic_bitmap(errcode_t magic, ext2_filsys fs, 860 __u32 start, __u32 end, 861 __u32 real_end, 862 const char *descr, char *init_map, 863 ext2fs_generic_bitmap *ret); 864extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start, 865 __u32 end, 866 __u32 real_end, 867 const char *descr, 868 ext2fs_generic_bitmap *ret); 869extern errcode_t ext2fs_copy_generic_bitmap(ext2fs_generic_bitmap src, 870 ext2fs_generic_bitmap *dest); 871extern void ext2fs_clear_generic_bitmap(ext2fs_generic_bitmap bitmap); 872extern errcode_t ext2fs_fudge_generic_bitmap_end(ext2fs_inode_bitmap bitmap, 873 errcode_t magic, 874 errcode_t neq, 875 ext2_ino_t end, 876 ext2_ino_t *oend); 877extern void ext2fs_set_generic_bitmap_padding(ext2fs_generic_bitmap map); 878extern errcode_t ext2fs_resize_generic_bitmap(errcode_t magic, 879 __u32 new_end, 880 __u32 new_real_end, 881 ext2fs_generic_bitmap bmap); 882extern errcode_t ext2fs_compare_generic_bitmap(errcode_t magic, errcode_t neq, 883 ext2fs_generic_bitmap bm1, 884 ext2fs_generic_bitmap bm2); 885extern errcode_t ext2fs_get_generic_bitmap_range(ext2fs_generic_bitmap bmap, 886 errcode_t magic, 887 __u32 start, __u32 num, 888 void *out); 889extern errcode_t ext2fs_set_generic_bitmap_range(ext2fs_generic_bitmap bmap, 890 errcode_t magic, 891 __u32 start, __u32 num, 892 void *in); 893 894/* getsize.c */ 895extern errcode_t ext2fs_get_device_size(const char *file, int blocksize, 896 blk_t *retblocks); 897 898/* getsectsize.c */ 899errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize); 900 901/* i_block.c */ 902errcode_t ext2fs_iblk_add_blocks(ext2_filsys fs, struct ext2_inode *inode, 903 blk64_t num_blocks); 904errcode_t ext2fs_iblk_sub_blocks(ext2_filsys fs, struct ext2_inode *inode, 905 blk64_t num_blocks); 906errcode_t ext2fs_iblk_set(ext2_filsys fs, struct ext2_inode *inode, blk64_t b); 907 908/* imager.c */ 909extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags); 910extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags); 911extern errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd, int flags); 912extern errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd, int flags); 913extern errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags); 914extern errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags); 915 916/* ind_block.c */ 917errcode_t ext2fs_read_ind_block(ext2_filsys fs, blk_t blk, void *buf); 918errcode_t ext2fs_write_ind_block(ext2_filsys fs, blk_t blk, void *buf); 919 920/* initialize.c */ 921extern errcode_t ext2fs_initialize(const char *name, int flags, 922 struct ext2_super_block *param, 923 io_manager manager, ext2_filsys *ret_fs); 924 925/* icount.c */ 926extern void ext2fs_free_icount(ext2_icount_t icount); 927extern errcode_t ext2fs_create_icount_tdb(ext2_filsys fs, char *tdb_dir, 928 int flags, ext2_icount_t *ret); 929extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags, 930 unsigned int size, 931 ext2_icount_t hint, ext2_icount_t *ret); 932extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags, 933 unsigned int size, 934 ext2_icount_t *ret); 935extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ext2_ino_t ino, 936 __u16 *ret); 937extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ext2_ino_t ino, 938 __u16 *ret); 939extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ext2_ino_t ino, 940 __u16 *ret); 941extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ext2_ino_t ino, 942 __u16 count); 943extern ext2_ino_t ext2fs_get_icount_size(ext2_icount_t icount); 944errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *); 945 946/* inode.c */ 947extern errcode_t ext2fs_flush_icache(ext2_filsys fs); 948extern errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan, 949 ext2_ino_t *ino, 950 struct ext2_inode *inode, 951 int bufsize); 952extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks, 953 ext2_inode_scan *ret_scan); 954extern void ext2fs_close_inode_scan(ext2_inode_scan scan); 955extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino, 956 struct ext2_inode *inode); 957extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan, 958 int group); 959extern void ext2fs_set_inode_callback 960 (ext2_inode_scan scan, 961 errcode_t (*done_group)(ext2_filsys fs, 962 ext2_inode_scan scan, 963 dgrp_t group, 964 void * priv_data), 965 void *done_group_data); 966extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags, 967 int clear_flags); 968extern errcode_t ext2fs_read_inode_full(ext2_filsys fs, ext2_ino_t ino, 969 struct ext2_inode * inode, 970 int bufsize); 971extern errcode_t ext2fs_read_inode (ext2_filsys fs, ext2_ino_t ino, 972 struct ext2_inode * inode); 973extern errcode_t ext2fs_write_inode_full(ext2_filsys fs, ext2_ino_t ino, 974 struct ext2_inode * inode, 975 int bufsize); 976extern errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino, 977 struct ext2_inode * inode); 978extern errcode_t ext2fs_write_new_inode(ext2_filsys fs, ext2_ino_t ino, 979 struct ext2_inode * inode); 980extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); 981extern errcode_t ext2fs_check_directory(ext2_filsys fs, ext2_ino_t ino); 982 983/* inode_io.c */ 984extern io_manager inode_io_manager; 985extern errcode_t ext2fs_inode_io_intern(ext2_filsys fs, ext2_ino_t ino, 986 char **name); 987extern errcode_t ext2fs_inode_io_intern2(ext2_filsys fs, ext2_ino_t ino, 988 struct ext2_inode *inode, 989 char **name); 990 991/* ismounted.c */ 992extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags); 993extern errcode_t ext2fs_check_mount_point(const char *device, int *mount_flags, 994 char *mtpt, int mtlen); 995 996/* namei.c */ 997extern errcode_t ext2fs_lookup(ext2_filsys fs, ext2_ino_t dir, const char *name, 998 int namelen, char *buf, ext2_ino_t *inode); 999extern errcode_t ext2fs_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1000 const char *name, ext2_ino_t *inode); 1001errcode_t ext2fs_namei_follow(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1002 const char *name, ext2_ino_t *inode); 1003extern errcode_t ext2fs_follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1004 ext2_ino_t inode, ext2_ino_t *res_inode); 1005 1006/* native.c */ 1007int ext2fs_native_flag(void); 1008 1009/* newdir.c */ 1010extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino, 1011 ext2_ino_t parent_ino, char **block); 1012 1013/* mkdir.c */ 1014extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum, 1015 const char *name); 1016 1017/* mkjournal.c */ 1018extern errcode_t ext2fs_create_journal_superblock(ext2_filsys fs, 1019 __u32 size, int flags, 1020 char **ret_jsb); 1021extern errcode_t ext2fs_add_journal_device(ext2_filsys fs, 1022 ext2_filsys journal_dev); 1023extern errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t size, 1024 int flags); 1025extern int ext2fs_default_journal_size(__u64 blocks); 1026 1027/* openfs.c */ 1028extern errcode_t ext2fs_open(const char *name, int flags, int superblock, 1029 unsigned int block_size, io_manager manager, 1030 ext2_filsys *ret_fs); 1031extern errcode_t ext2fs_open2(const char *name, const char *io_options, 1032 int flags, int superblock, 1033 unsigned int block_size, io_manager manager, 1034 ext2_filsys *ret_fs); 1035extern blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block, 1036 dgrp_t i); 1037errcode_t ext2fs_get_data_io(ext2_filsys fs, io_channel *old_io); 1038errcode_t ext2fs_set_data_io(ext2_filsys fs, io_channel new_io); 1039errcode_t ext2fs_rewrite_to_io(ext2_filsys fs, io_channel new_io); 1040 1041/* get_pathname.c */ 1042extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino, 1043 char **name); 1044 1045/* link.c */ 1046errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name, 1047 ext2_ino_t ino, int flags); 1048errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir, const char *name, 1049 ext2_ino_t ino, int flags); 1050 1051/* read_bb.c */ 1052extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs, 1053 ext2_badblocks_list *bb_list); 1054 1055/* read_bb_file.c */ 1056extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f, 1057 ext2_badblocks_list *bb_list, 1058 void *priv_data, 1059 void (*invalid)(ext2_filsys fs, 1060 blk_t blk, 1061 char *badstr, 1062 void *priv_data)); 1063extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f, 1064 ext2_badblocks_list *bb_list, 1065 void (*invalid)(ext2_filsys fs, 1066 blk_t blk)); 1067 1068/* res_gdt.c */ 1069extern errcode_t ext2fs_create_resize_inode(ext2_filsys fs); 1070 1071/* swapfs.c */ 1072extern void ext2fs_swap_ext_attr(char *to, char *from, int bufsize, 1073 int has_header); 1074extern void ext2fs_swap_ext_attr_header(struct ext2_ext_attr_header *to_header, 1075 struct ext2_ext_attr_header *from_hdr); 1076extern void ext2fs_swap_ext_attr_entry(struct ext2_ext_attr_entry *to_entry, 1077 struct ext2_ext_attr_entry *from_entry); 1078extern void ext2fs_swap_super(struct ext2_super_block * super); 1079extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp); 1080extern void ext2fs_swap_inode_full(ext2_filsys fs, struct ext2_inode_large *t, 1081 struct ext2_inode_large *f, int hostorder, 1082 int bufsize); 1083extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t, 1084 struct ext2_inode *f, int hostorder); 1085 1086/* valid_blk.c */ 1087extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode); 1088 1089/* version.c */ 1090extern int ext2fs_parse_version_string(const char *ver_string); 1091extern int ext2fs_get_library_version(const char **ver_string, 1092 const char **date_string); 1093 1094/* write_bb_file.c */ 1095extern errcode_t ext2fs_write_bb_FILE(ext2_badblocks_list bb_list, 1096 unsigned int flags, 1097 FILE *f); 1098 1099 1100/* inline functions */ 1101extern errcode_t ext2fs_get_mem(unsigned long size, void *ptr); 1102extern errcode_t ext2fs_get_array(unsigned long count, unsigned long size, void *ptr); 1103extern errcode_t ext2fs_free_mem(void *ptr); 1104extern errcode_t ext2fs_resize_mem(unsigned long old_size, 1105 unsigned long size, void *ptr); 1106extern void ext2fs_mark_super_dirty(ext2_filsys fs); 1107extern void ext2fs_mark_changed(ext2_filsys fs); 1108extern int ext2fs_test_changed(ext2_filsys fs); 1109extern void ext2fs_mark_valid(ext2_filsys fs); 1110extern void ext2fs_unmark_valid(ext2_filsys fs); 1111extern int ext2fs_test_valid(ext2_filsys fs); 1112extern void ext2fs_mark_ib_dirty(ext2_filsys fs); 1113extern void ext2fs_mark_bb_dirty(ext2_filsys fs); 1114extern int ext2fs_test_ib_dirty(ext2_filsys fs); 1115extern int ext2fs_test_bb_dirty(ext2_filsys fs); 1116extern int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk); 1117extern int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino); 1118extern blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group); 1119extern blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group); 1120extern blk_t ext2fs_inode_data_blocks(ext2_filsys fs, 1121 struct ext2_inode *inode); 1122extern unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b); 1123 1124/* 1125 * The actual inlined functions definitions themselves... 1126 * 1127 * If NO_INLINE_FUNCS is defined, then we won't try to do inline 1128 * functions at all! 1129 */ 1130#if (defined(INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS)) 1131#ifdef INCLUDE_INLINE_FUNCS 1132#define _INLINE_ extern 1133#else 1134#ifdef __GNUC__ 1135#define _INLINE_ extern __inline__ 1136#else /* For Watcom C */ 1137#define _INLINE_ extern inline 1138#endif 1139#endif 1140 1141#ifndef EXT2_CUSTOM_MEMORY_ROUTINES 1142#include <string.h> 1143/* 1144 * Allocate memory 1145 */ 1146_INLINE_ errcode_t ext2fs_get_mem(unsigned long size, void *ptr) 1147{ 1148 void *pp; 1149 1150 pp = malloc(size); 1151 if (!pp) 1152 return EXT2_ET_NO_MEMORY; 1153 memcpy(ptr, &pp, sizeof (pp)); 1154 return 0; 1155} 1156 1157_INLINE_ errcode_t ext2fs_get_array(unsigned long count, unsigned long size, void *ptr) 1158{ 1159 if (count && (-1UL)/count<size) 1160 return EXT2_ET_NO_MEMORY; //maybe define EXT2_ET_OVERFLOW ? 1161 return ext2fs_get_mem(count*size, ptr); 1162} 1163 1164/* 1165 * Free memory 1166 */ 1167_INLINE_ errcode_t ext2fs_free_mem(void *ptr) 1168{ 1169 void *p; 1170 1171 memcpy(&p, ptr, sizeof(p)); 1172 free(p); 1173 p = 0; 1174 memcpy(ptr, &p, sizeof(p)); 1175 return 0; 1176} 1177 1178/* 1179 * Resize memory 1180 */ 1181_INLINE_ errcode_t ext2fs_resize_mem(unsigned long EXT2FS_ATTR((unused)) old_size, 1182 unsigned long size, void *ptr) 1183{ 1184 void *p; 1185 1186 /* Use "memcpy" for pointer assignments here to avoid problems 1187 * with C99 strict type aliasing rules. */ 1188 memcpy(&p, ptr, sizeof(p)); 1189 p = realloc(p, size); 1190 if (!p) 1191 return EXT2_ET_NO_MEMORY; 1192 memcpy(ptr, &p, sizeof(p)); 1193 return 0; 1194} 1195#endif /* Custom memory routines */ 1196 1197/* 1198 * Mark a filesystem superblock as dirty 1199 */ 1200_INLINE_ void ext2fs_mark_super_dirty(ext2_filsys fs) 1201{ 1202 fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_CHANGED; 1203} 1204 1205/* 1206 * Mark a filesystem as changed 1207 */ 1208_INLINE_ void ext2fs_mark_changed(ext2_filsys fs) 1209{ 1210 fs->flags |= EXT2_FLAG_CHANGED; 1211} 1212 1213/* 1214 * Check to see if a filesystem has changed 1215 */ 1216_INLINE_ int ext2fs_test_changed(ext2_filsys fs) 1217{ 1218 return (fs->flags & EXT2_FLAG_CHANGED); 1219} 1220 1221/* 1222 * Mark a filesystem as valid 1223 */ 1224_INLINE_ void ext2fs_mark_valid(ext2_filsys fs) 1225{ 1226 fs->flags |= EXT2_FLAG_VALID; 1227} 1228 1229/* 1230 * Mark a filesystem as NOT valid 1231 */ 1232_INLINE_ void ext2fs_unmark_valid(ext2_filsys fs) 1233{ 1234 fs->flags &= ~EXT2_FLAG_VALID; 1235} 1236 1237/* 1238 * Check to see if a filesystem is valid 1239 */ 1240_INLINE_ int ext2fs_test_valid(ext2_filsys fs) 1241{ 1242 return (fs->flags & EXT2_FLAG_VALID); 1243} 1244 1245/* 1246 * Mark the inode bitmap as dirty 1247 */ 1248_INLINE_ void ext2fs_mark_ib_dirty(ext2_filsys fs) 1249{ 1250 fs->flags |= EXT2_FLAG_IB_DIRTY | EXT2_FLAG_CHANGED; 1251} 1252 1253/* 1254 * Mark the block bitmap as dirty 1255 */ 1256_INLINE_ void ext2fs_mark_bb_dirty(ext2_filsys fs) 1257{ 1258 fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_CHANGED; 1259} 1260 1261/* 1262 * Check to see if a filesystem's inode bitmap is dirty 1263 */ 1264_INLINE_ int ext2fs_test_ib_dirty(ext2_filsys fs) 1265{ 1266 return (fs->flags & EXT2_FLAG_IB_DIRTY); 1267} 1268 1269/* 1270 * Check to see if a filesystem's block bitmap is dirty 1271 */ 1272_INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs) 1273{ 1274 return (fs->flags & EXT2_FLAG_BB_DIRTY); 1275} 1276 1277/* 1278 * Return the group # of a block 1279 */ 1280_INLINE_ int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk) 1281{ 1282 return (blk - fs->super->s_first_data_block) / 1283 fs->super->s_blocks_per_group; 1284} 1285 1286/* 1287 * Return the group # of an inode number 1288 */ 1289_INLINE_ int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino) 1290{ 1291 return (ino - 1) / fs->super->s_inodes_per_group; 1292} 1293 1294/* 1295 * Return the first block (inclusive) in a group 1296 */ 1297_INLINE_ blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group) 1298{ 1299 return fs->super->s_first_data_block + 1300 (group * fs->super->s_blocks_per_group); 1301} 1302 1303/* 1304 * Return the last block (inclusive) in a group 1305 */ 1306_INLINE_ blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group) 1307{ 1308 return (group == fs->group_desc_count - 1 ? 1309 fs->super->s_blocks_count - 1 : 1310 ext2fs_group_first_block(fs, group) + 1311 (fs->super->s_blocks_per_group - 1)); 1312} 1313 1314_INLINE_ blk_t ext2fs_inode_data_blocks(ext2_filsys fs, 1315 struct ext2_inode *inode) 1316{ 1317 return inode->i_blocks - 1318 (inode->i_file_acl ? fs->blocksize >> 9 : 0); 1319} 1320 1321/* 1322 * This is an efficient, overflow safe way of calculating ceil((1.0 * a) / b) 1323 */ 1324_INLINE_ unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b) 1325{ 1326 if (!a) 1327 return 0; 1328 return ((a - 1) / b) + 1; 1329} 1330#undef _INLINE_ 1331#endif 1332 1333#ifdef __cplusplus 1334} 1335#endif 1336 1337#endif /* _EXT2FS_EXT2FS_H */ 1338