ext2fs.h revision 01229db57ee71518f81d87d6bf900c62fe1de100
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 * 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_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 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|\ 519 EXT2_FEATURE_RO_COMPAT_LARGE_FILE|\ 520 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|\ 521 EXT4_FEATURE_RO_COMPAT_GDT_CSUM) 522 523/* 524 * These features are only allowed if EXT2_FLAG_SOFTSUPP_FEATURES is passed 525 * to ext2fs_openfs() 526 */ 527#define EXT2_LIB_SOFTSUPP_INCOMPAT (0) 528#define EXT2_LIB_SOFTSUPP_RO_COMPAT (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/* csum.c */ 709extern void ext2fs_group_desc_csum_set(ext2_filsys fs, dgrp_t group); 710extern int ext2fs_group_desc_csum_verify(ext2_filsys fs, dgrp_t group); 711extern errcode_t ext2fs_set_gdt_csum(ext2_filsys fs); 712 713/* dblist.c */ 714 715extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs); 716extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist); 717extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ext2_ino_t ino, 718 blk_t blk, int blockcnt); 719extern void ext2fs_dblist_sort(ext2_dblist dblist, 720 EXT2_QSORT_TYPE (*sortfunc)(const void *, 721 const void *)); 722extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist, 723 int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info, 724 void *priv_data), 725 void *priv_data); 726extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ext2_ino_t ino, 727 blk_t blk, int blockcnt); 728extern errcode_t ext2fs_copy_dblist(ext2_dblist src, 729 ext2_dblist *dest); 730extern int ext2fs_dblist_count(ext2_dblist dblist); 731extern errcode_t ext2fs_dblist_get_last(ext2_dblist dblist, 732 struct ext2_db_entry **entry); 733extern errcode_t ext2fs_dblist_drop_last(ext2_dblist dblist); 734 735/* dblist_dir.c */ 736extern errcode_t 737 ext2fs_dblist_dir_iterate(ext2_dblist dblist, 738 int flags, 739 char *block_buf, 740 int (*func)(ext2_ino_t dir, 741 int entry, 742 struct ext2_dir_entry *dirent, 743 int offset, 744 int blocksize, 745 char *buf, 746 void *priv_data), 747 void *priv_data); 748 749/* dirblock.c */ 750extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block, 751 void *buf); 752extern errcode_t ext2fs_read_dir_block2(ext2_filsys fs, blk_t block, 753 void *buf, int flags); 754extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block, 755 void *buf); 756extern errcode_t ext2fs_write_dir_block2(ext2_filsys fs, blk_t block, 757 void *buf, int flags); 758 759/* dirhash.c */ 760extern errcode_t ext2fs_dirhash(int version, const char *name, int len, 761 const __u32 *seed, 762 ext2_dirhash_t *ret_hash, 763 ext2_dirhash_t *ret_minor_hash); 764 765 766/* dir_iterate.c */ 767extern errcode_t ext2fs_dir_iterate(ext2_filsys fs, 768 ext2_ino_t dir, 769 int flags, 770 char *block_buf, 771 int (*func)(struct ext2_dir_entry *dirent, 772 int offset, 773 int blocksize, 774 char *buf, 775 void *priv_data), 776 void *priv_data); 777extern errcode_t ext2fs_dir_iterate2(ext2_filsys fs, 778 ext2_ino_t dir, 779 int flags, 780 char *block_buf, 781 int (*func)(ext2_ino_t dir, 782 int entry, 783 struct ext2_dir_entry *dirent, 784 int offset, 785 int blocksize, 786 char *buf, 787 void *priv_data), 788 void *priv_data); 789 790/* dupfs.c */ 791extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest); 792 793/* expanddir.c */ 794extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir); 795 796/* ext_attr.c */ 797extern __u32 ext2fs_ext_attr_hash_entry(struct ext2_ext_attr_entry *entry, 798 void *data); 799extern errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf); 800extern errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block, 801 void *buf); 802extern errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk, 803 char *block_buf, 804 int adjust, __u32 *newcount); 805 806/* extent.c */ 807extern errcode_t ext2fs_extent_header_verify(void *ptr, int size); 808extern errcode_t ext2fs_extent_open(ext2_filsys fs, ext2_ino_t ino, 809 ext2_extent_handle_t *handle); 810extern void ext2fs_extent_free(ext2_extent_handle_t handle); 811extern errcode_t ext2fs_extent_get(ext2_extent_handle_t handle, 812 int flags, struct ext2fs_extent *extent); 813extern errcode_t ext2fs_extent_replace(ext2_extent_handle_t handle, int flags, 814 struct ext2fs_extent *extent); 815extern errcode_t ext2fs_extent_insert(ext2_extent_handle_t handle, int flags, 816 struct ext2fs_extent *extent); 817extern errcode_t ext2fs_extent_delete(ext2_extent_handle_t handle, int flags); 818extern errcode_t ext2fs_extent_get_info(ext2_extent_handle_t handle, 819 struct ext2_extent_info *info); 820extern errcode_t ext2fs_extent_goto(ext2_extent_handle_t handle, 821 blk64_t blk); 822 823/* fileio.c */ 824extern errcode_t ext2fs_file_open2(ext2_filsys fs, ext2_ino_t ino, 825 struct ext2_inode *inode, 826 int flags, ext2_file_t *ret); 827extern errcode_t ext2fs_file_open(ext2_filsys fs, ext2_ino_t ino, 828 int flags, ext2_file_t *ret); 829extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file); 830extern errcode_t ext2fs_file_close(ext2_file_t file); 831extern errcode_t ext2fs_file_flush(ext2_file_t file); 832extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf, 833 unsigned int wanted, unsigned int *got); 834extern errcode_t ext2fs_file_write(ext2_file_t file, const void *buf, 835 unsigned int nbytes, unsigned int *written); 836extern errcode_t ext2fs_file_llseek(ext2_file_t file, __u64 offset, 837 int whence, __u64 *ret_pos); 838extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset, 839 int whence, ext2_off_t *ret_pos); 840errcode_t ext2fs_file_get_lsize(ext2_file_t file, __u64 *ret_size); 841extern ext2_off_t ext2fs_file_get_size(ext2_file_t file); 842extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size); 843 844/* finddev.c */ 845extern char *ext2fs_find_block_device(dev_t device); 846 847/* flushb.c */ 848extern errcode_t ext2fs_sync_device(int fd, int flushb); 849 850/* freefs.c */ 851extern void ext2fs_free(ext2_filsys fs); 852extern void ext2fs_free_dblist(ext2_dblist dblist); 853extern void ext2fs_badblocks_list_free(ext2_badblocks_list bb); 854extern void ext2fs_u32_list_free(ext2_u32_list bb); 855 856/* gen_bitmap.c */ 857extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap); 858extern errcode_t ext2fs_make_generic_bitmap(errcode_t magic, ext2_filsys fs, 859 __u32 start, __u32 end, 860 __u32 real_end, 861 const char *descr, char *init_map, 862 ext2fs_generic_bitmap *ret); 863extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start, 864 __u32 end, 865 __u32 real_end, 866 const char *descr, 867 ext2fs_generic_bitmap *ret); 868extern errcode_t ext2fs_copy_generic_bitmap(ext2fs_generic_bitmap src, 869 ext2fs_generic_bitmap *dest); 870extern void ext2fs_clear_generic_bitmap(ext2fs_generic_bitmap bitmap); 871extern errcode_t ext2fs_fudge_generic_bitmap_end(ext2fs_inode_bitmap bitmap, 872 errcode_t magic, 873 errcode_t neq, 874 ext2_ino_t end, 875 ext2_ino_t *oend); 876extern void ext2fs_set_generic_bitmap_padding(ext2fs_generic_bitmap map); 877extern errcode_t ext2fs_resize_generic_bitmap(errcode_t magic, 878 __u32 new_end, 879 __u32 new_real_end, 880 ext2fs_generic_bitmap bmap); 881extern errcode_t ext2fs_compare_generic_bitmap(errcode_t magic, errcode_t neq, 882 ext2fs_generic_bitmap bm1, 883 ext2fs_generic_bitmap bm2); 884extern errcode_t ext2fs_get_generic_bitmap_range(ext2fs_generic_bitmap bmap, 885 errcode_t magic, 886 __u32 start, __u32 num, 887 void *out); 888extern errcode_t ext2fs_set_generic_bitmap_range(ext2fs_generic_bitmap bmap, 889 errcode_t magic, 890 __u32 start, __u32 num, 891 void *in); 892 893/* getsize.c */ 894extern errcode_t ext2fs_get_device_size(const char *file, int blocksize, 895 blk_t *retblocks); 896 897/* getsectsize.c */ 898errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize); 899 900/* i_block.c */ 901errcode_t ext2fs_iblk_add_blocks(ext2_filsys fs, struct ext2_inode *inode, 902 blk64_t num_blocks); 903errcode_t ext2fs_iblk_sub_blocks(ext2_filsys fs, struct ext2_inode *inode, 904 blk64_t num_blocks); 905errcode_t ext2fs_iblk_set(ext2_filsys fs, struct ext2_inode *inode, blk64_t b); 906 907/* imager.c */ 908extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags); 909extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags); 910extern errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd, int flags); 911extern errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd, int flags); 912extern errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags); 913extern errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags); 914 915/* ind_block.c */ 916errcode_t ext2fs_read_ind_block(ext2_filsys fs, blk_t blk, void *buf); 917errcode_t ext2fs_write_ind_block(ext2_filsys fs, blk_t blk, void *buf); 918 919/* initialize.c */ 920extern errcode_t ext2fs_initialize(const char *name, int flags, 921 struct ext2_super_block *param, 922 io_manager manager, ext2_filsys *ret_fs); 923 924/* icount.c */ 925extern void ext2fs_free_icount(ext2_icount_t icount); 926extern errcode_t ext2fs_create_icount_tdb(ext2_filsys fs, char *tdb_dir, 927 int flags, ext2_icount_t *ret); 928extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags, 929 unsigned int size, 930 ext2_icount_t hint, ext2_icount_t *ret); 931extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags, 932 unsigned int size, 933 ext2_icount_t *ret); 934extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ext2_ino_t ino, 935 __u16 *ret); 936extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ext2_ino_t ino, 937 __u16 *ret); 938extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ext2_ino_t ino, 939 __u16 *ret); 940extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ext2_ino_t ino, 941 __u16 count); 942extern ext2_ino_t ext2fs_get_icount_size(ext2_icount_t icount); 943errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *); 944 945/* inode.c */ 946extern errcode_t ext2fs_flush_icache(ext2_filsys fs); 947extern errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan, 948 ext2_ino_t *ino, 949 struct ext2_inode *inode, 950 int bufsize); 951extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks, 952 ext2_inode_scan *ret_scan); 953extern void ext2fs_close_inode_scan(ext2_inode_scan scan); 954extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino, 955 struct ext2_inode *inode); 956extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan, 957 int group); 958extern void ext2fs_set_inode_callback 959 (ext2_inode_scan scan, 960 errcode_t (*done_group)(ext2_filsys fs, 961 ext2_inode_scan scan, 962 dgrp_t group, 963 void * priv_data), 964 void *done_group_data); 965extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags, 966 int clear_flags); 967extern errcode_t ext2fs_read_inode_full(ext2_filsys fs, ext2_ino_t ino, 968 struct ext2_inode * inode, 969 int bufsize); 970extern errcode_t ext2fs_read_inode (ext2_filsys fs, ext2_ino_t ino, 971 struct ext2_inode * inode); 972extern errcode_t ext2fs_write_inode_full(ext2_filsys fs, ext2_ino_t ino, 973 struct ext2_inode * inode, 974 int bufsize); 975extern errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino, 976 struct ext2_inode * inode); 977extern errcode_t ext2fs_write_new_inode(ext2_filsys fs, ext2_ino_t ino, 978 struct ext2_inode * inode); 979extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); 980extern errcode_t ext2fs_check_directory(ext2_filsys fs, ext2_ino_t ino); 981 982/* inode_io.c */ 983extern io_manager inode_io_manager; 984extern errcode_t ext2fs_inode_io_intern(ext2_filsys fs, ext2_ino_t ino, 985 char **name); 986extern errcode_t ext2fs_inode_io_intern2(ext2_filsys fs, ext2_ino_t ino, 987 struct ext2_inode *inode, 988 char **name); 989 990/* ismounted.c */ 991extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags); 992extern errcode_t ext2fs_check_mount_point(const char *device, int *mount_flags, 993 char *mtpt, int mtlen); 994 995/* namei.c */ 996extern errcode_t ext2fs_lookup(ext2_filsys fs, ext2_ino_t dir, const char *name, 997 int namelen, char *buf, ext2_ino_t *inode); 998extern errcode_t ext2fs_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 999 const char *name, ext2_ino_t *inode); 1000errcode_t ext2fs_namei_follow(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1001 const char *name, ext2_ino_t *inode); 1002extern errcode_t ext2fs_follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1003 ext2_ino_t inode, ext2_ino_t *res_inode); 1004 1005/* native.c */ 1006int ext2fs_native_flag(void); 1007 1008/* newdir.c */ 1009extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino, 1010 ext2_ino_t parent_ino, char **block); 1011 1012/* mkdir.c */ 1013extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum, 1014 const char *name); 1015 1016/* mkjournal.c */ 1017extern errcode_t ext2fs_zero_blocks(ext2_filsys fs, blk_t blk, int num, 1018 blk_t *ret_blk, int *ret_count); 1019extern errcode_t ext2fs_create_journal_superblock(ext2_filsys fs, 1020 __u32 size, int flags, 1021 char **ret_jsb); 1022extern errcode_t ext2fs_add_journal_device(ext2_filsys fs, 1023 ext2_filsys journal_dev); 1024extern errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t size, 1025 int flags); 1026extern int ext2fs_default_journal_size(__u64 blocks); 1027 1028/* openfs.c */ 1029extern errcode_t ext2fs_open(const char *name, int flags, int superblock, 1030 unsigned int block_size, io_manager manager, 1031 ext2_filsys *ret_fs); 1032extern errcode_t ext2fs_open2(const char *name, const char *io_options, 1033 int flags, int superblock, 1034 unsigned int block_size, io_manager manager, 1035 ext2_filsys *ret_fs); 1036extern blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block, 1037 dgrp_t i); 1038errcode_t ext2fs_get_data_io(ext2_filsys fs, io_channel *old_io); 1039errcode_t ext2fs_set_data_io(ext2_filsys fs, io_channel new_io); 1040errcode_t ext2fs_rewrite_to_io(ext2_filsys fs, io_channel new_io); 1041 1042/* get_pathname.c */ 1043extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino, 1044 char **name); 1045 1046/* link.c */ 1047errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name, 1048 ext2_ino_t ino, int flags); 1049errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir, const char *name, 1050 ext2_ino_t ino, int flags); 1051 1052/* read_bb.c */ 1053extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs, 1054 ext2_badblocks_list *bb_list); 1055 1056/* read_bb_file.c */ 1057extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f, 1058 ext2_badblocks_list *bb_list, 1059 void *priv_data, 1060 void (*invalid)(ext2_filsys fs, 1061 blk_t blk, 1062 char *badstr, 1063 void *priv_data)); 1064extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f, 1065 ext2_badblocks_list *bb_list, 1066 void (*invalid)(ext2_filsys fs, 1067 blk_t blk)); 1068 1069/* res_gdt.c */ 1070extern errcode_t ext2fs_create_resize_inode(ext2_filsys fs); 1071 1072/* swapfs.c */ 1073extern void ext2fs_swap_ext_attr(char *to, char *from, int bufsize, 1074 int has_header); 1075extern void ext2fs_swap_ext_attr_header(struct ext2_ext_attr_header *to_header, 1076 struct ext2_ext_attr_header *from_hdr); 1077extern void ext2fs_swap_ext_attr_entry(struct ext2_ext_attr_entry *to_entry, 1078 struct ext2_ext_attr_entry *from_entry); 1079extern void ext2fs_swap_super(struct ext2_super_block * super); 1080extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp); 1081extern void ext2fs_swap_inode_full(ext2_filsys fs, struct ext2_inode_large *t, 1082 struct ext2_inode_large *f, int hostorder, 1083 int bufsize); 1084extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t, 1085 struct ext2_inode *f, int hostorder); 1086 1087/* valid_blk.c */ 1088extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode); 1089 1090/* version.c */ 1091extern int ext2fs_parse_version_string(const char *ver_string); 1092extern int ext2fs_get_library_version(const char **ver_string, 1093 const char **date_string); 1094 1095/* write_bb_file.c */ 1096extern errcode_t ext2fs_write_bb_FILE(ext2_badblocks_list bb_list, 1097 unsigned int flags, 1098 FILE *f); 1099 1100 1101/* inline functions */ 1102extern errcode_t ext2fs_get_mem(unsigned long size, void *ptr); 1103extern errcode_t ext2fs_get_array(unsigned long count, unsigned long size, void *ptr); 1104extern errcode_t ext2fs_free_mem(void *ptr); 1105extern errcode_t ext2fs_resize_mem(unsigned long old_size, 1106 unsigned long size, void *ptr); 1107extern void ext2fs_mark_super_dirty(ext2_filsys fs); 1108extern void ext2fs_mark_changed(ext2_filsys fs); 1109extern int ext2fs_test_changed(ext2_filsys fs); 1110extern void ext2fs_mark_valid(ext2_filsys fs); 1111extern void ext2fs_unmark_valid(ext2_filsys fs); 1112extern int ext2fs_test_valid(ext2_filsys fs); 1113extern void ext2fs_mark_ib_dirty(ext2_filsys fs); 1114extern void ext2fs_mark_bb_dirty(ext2_filsys fs); 1115extern int ext2fs_test_ib_dirty(ext2_filsys fs); 1116extern int ext2fs_test_bb_dirty(ext2_filsys fs); 1117extern int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk); 1118extern int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino); 1119extern blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group); 1120extern blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group); 1121extern blk_t ext2fs_inode_data_blocks(ext2_filsys fs, 1122 struct ext2_inode *inode); 1123extern unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b); 1124 1125/* 1126 * The actual inlined functions definitions themselves... 1127 * 1128 * If NO_INLINE_FUNCS is defined, then we won't try to do inline 1129 * functions at all! 1130 */ 1131#if (defined(INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS)) 1132#ifdef INCLUDE_INLINE_FUNCS 1133#define _INLINE_ extern 1134#else 1135#ifdef __GNUC__ 1136#define _INLINE_ extern __inline__ 1137#else /* For Watcom C */ 1138#define _INLINE_ extern inline 1139#endif 1140#endif 1141 1142#ifndef EXT2_CUSTOM_MEMORY_ROUTINES 1143#include <string.h> 1144/* 1145 * Allocate memory 1146 */ 1147_INLINE_ errcode_t ext2fs_get_mem(unsigned long size, void *ptr) 1148{ 1149 void *pp; 1150 1151 pp = malloc(size); 1152 if (!pp) 1153 return EXT2_ET_NO_MEMORY; 1154 memcpy(ptr, &pp, sizeof (pp)); 1155 return 0; 1156} 1157 1158_INLINE_ errcode_t ext2fs_get_array(unsigned long count, unsigned long size, void *ptr) 1159{ 1160 if (count && (-1UL)/count<size) 1161 return EXT2_ET_NO_MEMORY; //maybe define EXT2_ET_OVERFLOW ? 1162 return ext2fs_get_mem(count*size, ptr); 1163} 1164 1165/* 1166 * Free memory 1167 */ 1168_INLINE_ errcode_t ext2fs_free_mem(void *ptr) 1169{ 1170 void *p; 1171 1172 memcpy(&p, ptr, sizeof(p)); 1173 free(p); 1174 p = 0; 1175 memcpy(ptr, &p, sizeof(p)); 1176 return 0; 1177} 1178 1179/* 1180 * Resize memory 1181 */ 1182_INLINE_ errcode_t ext2fs_resize_mem(unsigned long EXT2FS_ATTR((unused)) old_size, 1183 unsigned long size, void *ptr) 1184{ 1185 void *p; 1186 1187 /* Use "memcpy" for pointer assignments here to avoid problems 1188 * with C99 strict type aliasing rules. */ 1189 memcpy(&p, ptr, sizeof(p)); 1190 p = realloc(p, size); 1191 if (!p) 1192 return EXT2_ET_NO_MEMORY; 1193 memcpy(ptr, &p, sizeof(p)); 1194 return 0; 1195} 1196#endif /* Custom memory routines */ 1197 1198/* 1199 * Mark a filesystem superblock as dirty 1200 */ 1201_INLINE_ void ext2fs_mark_super_dirty(ext2_filsys fs) 1202{ 1203 fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_CHANGED; 1204} 1205 1206/* 1207 * Mark a filesystem as changed 1208 */ 1209_INLINE_ void ext2fs_mark_changed(ext2_filsys fs) 1210{ 1211 fs->flags |= EXT2_FLAG_CHANGED; 1212} 1213 1214/* 1215 * Check to see if a filesystem has changed 1216 */ 1217_INLINE_ int ext2fs_test_changed(ext2_filsys fs) 1218{ 1219 return (fs->flags & EXT2_FLAG_CHANGED); 1220} 1221 1222/* 1223 * Mark a filesystem as valid 1224 */ 1225_INLINE_ void ext2fs_mark_valid(ext2_filsys fs) 1226{ 1227 fs->flags |= EXT2_FLAG_VALID; 1228} 1229 1230/* 1231 * Mark a filesystem as NOT valid 1232 */ 1233_INLINE_ void ext2fs_unmark_valid(ext2_filsys fs) 1234{ 1235 fs->flags &= ~EXT2_FLAG_VALID; 1236} 1237 1238/* 1239 * Check to see if a filesystem is valid 1240 */ 1241_INLINE_ int ext2fs_test_valid(ext2_filsys fs) 1242{ 1243 return (fs->flags & EXT2_FLAG_VALID); 1244} 1245 1246/* 1247 * Mark the inode bitmap as dirty 1248 */ 1249_INLINE_ void ext2fs_mark_ib_dirty(ext2_filsys fs) 1250{ 1251 fs->flags |= EXT2_FLAG_IB_DIRTY | EXT2_FLAG_CHANGED; 1252} 1253 1254/* 1255 * Mark the block bitmap as dirty 1256 */ 1257_INLINE_ void ext2fs_mark_bb_dirty(ext2_filsys fs) 1258{ 1259 fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_CHANGED; 1260} 1261 1262/* 1263 * Check to see if a filesystem's inode bitmap is dirty 1264 */ 1265_INLINE_ int ext2fs_test_ib_dirty(ext2_filsys fs) 1266{ 1267 return (fs->flags & EXT2_FLAG_IB_DIRTY); 1268} 1269 1270/* 1271 * Check to see if a filesystem's block bitmap is dirty 1272 */ 1273_INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs) 1274{ 1275 return (fs->flags & EXT2_FLAG_BB_DIRTY); 1276} 1277 1278/* 1279 * Return the group # of a block 1280 */ 1281_INLINE_ int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk) 1282{ 1283 return (blk - fs->super->s_first_data_block) / 1284 fs->super->s_blocks_per_group; 1285} 1286 1287/* 1288 * Return the group # of an inode number 1289 */ 1290_INLINE_ int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino) 1291{ 1292 return (ino - 1) / fs->super->s_inodes_per_group; 1293} 1294 1295/* 1296 * Return the first block (inclusive) in a group 1297 */ 1298_INLINE_ blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group) 1299{ 1300 return fs->super->s_first_data_block + 1301 (group * fs->super->s_blocks_per_group); 1302} 1303 1304/* 1305 * Return the last block (inclusive) in a group 1306 */ 1307_INLINE_ blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group) 1308{ 1309 return (group == fs->group_desc_count - 1 ? 1310 fs->super->s_blocks_count - 1 : 1311 ext2fs_group_first_block(fs, group) + 1312 (fs->super->s_blocks_per_group - 1)); 1313} 1314 1315_INLINE_ blk_t ext2fs_inode_data_blocks(ext2_filsys fs, 1316 struct ext2_inode *inode) 1317{ 1318 return inode->i_blocks - 1319 (inode->i_file_acl ? fs->blocksize >> 9 : 0); 1320} 1321 1322/* 1323 * This is an efficient, overflow safe way of calculating ceil((1.0 * a) / b) 1324 */ 1325_INLINE_ unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b) 1326{ 1327 if (!a) 1328 return 0; 1329 return ((a - 1) / b) + 1; 1330} 1331#undef _INLINE_ 1332#endif 1333 1334#ifdef __cplusplus 1335} 1336#endif 1337 1338#endif /* _EXT2FS_EXT2FS_H */ 1339