ext2fs.h revision 3eb07f649350acfd9e145584d57aac3c1b65d0ba
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#else 79#include <et/com_err.h> 80#include <ext2fs/ext2_io.h> 81#include <ext2fs/ext2_err.h> 82#endif 83 84/* 85 * Portability help for Microsoft Visual C++ 86 */ 87#ifdef _MSC_VER 88#define EXT2_QSORT_TYPE int __cdecl 89#else 90#define EXT2_QSORT_TYPE int 91#endif 92 93typedef struct struct_ext2_filsys *ext2_filsys; 94 95#define EXT2FS_MARK_ERROR 0 96#define EXT2FS_UNMARK_ERROR 1 97#define EXT2FS_TEST_ERROR 2 98 99typedef struct ext2fs_struct_generic_bitmap *ext2fs_generic_bitmap; 100typedef struct ext2fs_struct_generic_bitmap *ext2fs_inode_bitmap; 101typedef struct ext2fs_struct_generic_bitmap *ext2fs_block_bitmap; 102 103#define EXT2_FIRST_INODE(s) EXT2_FIRST_INO(s) 104 105 106/* 107 * Badblocks list definitions 108 */ 109 110typedef struct ext2_struct_u32_list *ext2_badblocks_list; 111typedef struct ext2_struct_u32_iterate *ext2_badblocks_iterate; 112 113typedef struct ext2_struct_u32_list *ext2_u32_list; 114typedef struct ext2_struct_u32_iterate *ext2_u32_iterate; 115 116/* old */ 117typedef struct ext2_struct_u32_list *badblocks_list; 118typedef struct ext2_struct_u32_iterate *badblocks_iterate; 119 120#define BADBLOCKS_FLAG_DIRTY 1 121 122/* 123 * ext2_dblist structure and abstractions (see dblist.c) 124 */ 125struct ext2_db_entry { 126 ext2_ino_t ino; 127 blk_t blk; 128 int blockcnt; 129}; 130 131typedef struct ext2_struct_dblist *ext2_dblist; 132 133#define DBLIST_ABORT 1 134 135/* 136 * ext2_fileio definitions 137 */ 138 139#define EXT2_FILE_WRITE 0x0001 140#define EXT2_FILE_CREATE 0x0002 141 142#define EXT2_FILE_MASK 0x00FF 143 144#define EXT2_FILE_BUF_DIRTY 0x4000 145#define EXT2_FILE_BUF_VALID 0x2000 146 147typedef struct ext2_file *ext2_file_t; 148 149#define EXT2_SEEK_SET 0 150#define EXT2_SEEK_CUR 1 151#define EXT2_SEEK_END 2 152 153/* 154 * Flags for the ext2_filsys structure and for ext2fs_open() 155 */ 156#define EXT2_FLAG_RW 0x01 157#define EXT2_FLAG_CHANGED 0x02 158#define EXT2_FLAG_DIRTY 0x04 159#define EXT2_FLAG_VALID 0x08 160#define EXT2_FLAG_IB_DIRTY 0x10 161#define EXT2_FLAG_BB_DIRTY 0x20 162#define EXT2_FLAG_SWAP_BYTES 0x40 163#define EXT2_FLAG_SWAP_BYTES_READ 0x80 164#define EXT2_FLAG_SWAP_BYTES_WRITE 0x100 165#define EXT2_FLAG_MASTER_SB_ONLY 0x200 166#define EXT2_FLAG_FORCE 0x400 167#define EXT2_FLAG_SUPER_ONLY 0x800 168#define EXT2_FLAG_JOURNAL_DEV_OK 0x1000 169#define EXT2_FLAG_IMAGE_FILE 0x2000 170#define EXT2_FLAG_EXCLUSIVE 0x4000 171#define EXT2_FLAG_SOFTSUPP_FEATURES 0x8000 172 173/* 174 * Special flag in the ext2 inode i_flag field that means that this is 175 * a new inode. (So that ext2_write_inode() can clear extra fields.) 176 */ 177#define EXT2_NEW_INODE_FL 0x80000000 178 179/* 180 * Flags for mkjournal 181 * 182 * EXT2_MKJOURNAL_V1_SUPER Make a (deprecated) V1 journal superblock 183 */ 184#define EXT2_MKJOURNAL_V1_SUPER 0x0000001 185 186struct struct_ext2_filsys { 187 errcode_t magic; 188 io_channel io; 189 int flags; 190 char * device_name; 191 struct ext2_super_block * super; 192 unsigned int blocksize; 193 int fragsize; 194 dgrp_t group_desc_count; 195 unsigned long desc_blocks; 196 struct ext2_group_desc * group_desc; 197 int inode_blocks_per_group; 198 ext2fs_inode_bitmap inode_map; 199 ext2fs_block_bitmap block_map; 200 errcode_t (*get_blocks)(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); 201 errcode_t (*check_directory)(ext2_filsys fs, ext2_ino_t ino); 202 errcode_t (*write_bitmaps)(ext2_filsys fs); 203 errcode_t (*read_inode)(ext2_filsys fs, ext2_ino_t ino, 204 struct ext2_inode *inode); 205 errcode_t (*write_inode)(ext2_filsys fs, ext2_ino_t ino, 206 struct ext2_inode *inode); 207 ext2_badblocks_list badblocks; 208 ext2_dblist dblist; 209 __u32 stride; /* for mke2fs */ 210 struct ext2_super_block * orig_super; 211 struct ext2_image_hdr * image_header; 212 __u32 umask; 213 time_t now; 214 /* 215 * Reserved for future expansion 216 */ 217 __u32 reserved[7]; 218 219 /* 220 * Reserved for the use of the calling application. 221 */ 222 void * priv_data; 223 224 /* 225 * Inode cache 226 */ 227 struct ext2_inode_cache *icache; 228 io_channel image_io; 229}; 230 231#if EXT2_FLAT_INCLUDES 232#include "e2_bitops.h" 233#else 234#include <ext2fs/bitops.h> 235#endif 236 237/* 238 * Return flags for the block iterator functions 239 */ 240#define BLOCK_CHANGED 1 241#define BLOCK_ABORT 2 242#define BLOCK_ERROR 4 243 244/* 245 * Block interate flags 246 * 247 * BLOCK_FLAG_APPEND, or BLOCK_FLAG_HOLE, indicates that the interator 248 * function should be called on blocks where the block number is zero. 249 * This is used by ext2fs_expand_dir() to be able to add a new block 250 * to an inode. It can also be used for programs that want to be able 251 * to deal with files that contain "holes". 252 * 253 * BLOCK_FLAG_DEPTH_TRAVERSE indicates that the iterator function for 254 * the indirect, doubly indirect, etc. blocks should be called after 255 * all of the blocks containined in the indirect blocks are processed. 256 * This is useful if you are going to be deallocating blocks from an 257 * inode. 258 * 259 * BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be 260 * called for data blocks only. 261 * 262 * BLOCK_FLAG_READ_ONLY is a promise by the caller that it will not 263 * modify returned block number. 264 * 265 * BLOCK_FLAG_NO_LARGE is for internal use only. It informs 266 * ext2fs_block_iterate2 that large files won't be accepted. 267 */ 268#define BLOCK_FLAG_APPEND 1 269#define BLOCK_FLAG_HOLE 1 270#define BLOCK_FLAG_DEPTH_TRAVERSE 2 271#define BLOCK_FLAG_DATA_ONLY 4 272#define BLOCK_FLAG_READ_ONLY 8 273 274#define BLOCK_FLAG_NO_LARGE 0x1000 275 276/* 277 * Magic "block count" return values for the block iterator function. 278 */ 279#define BLOCK_COUNT_IND (-1) 280#define BLOCK_COUNT_DIND (-2) 281#define BLOCK_COUNT_TIND (-3) 282#define BLOCK_COUNT_TRANSLATOR (-4) 283 284#if 0 285/* 286 * Flags for ext2fs_move_blocks 287 */ 288#define EXT2_BMOVE_GET_DBLIST 0x0001 289#define EXT2_BMOVE_DEBUG 0x0002 290#endif 291 292/* 293 * Generic (non-filesystem layout specific) extents structure 294 */ 295 296#define EXT2_EXTENT_FLAGS_LEAF 0x0001 297#define EXT2_EXTENT_FLAGS_UNINIT 0x0002 298#define EXT2_EXTENT_FLAGS_SECOND_VISIT 0x0004 299 300struct ext2fs_extent { 301 blk64_t e_pblk; /* first physical block */ 302 blk64_t e_lblk; /* first logical block extent covers */ 303 __u32 e_len; /* number of blocks covered by extent */ 304 __u32 e_flags; /* extent flags */ 305}; 306 307typedef struct ext2_extent_handle *ext2_extent_handle_t; 308typedef struct ext2_extent_path *ext2_extent_path_t; 309 310/* 311 * Flags used by ext2fs_extent_get() 312 */ 313#define EXT2_EXTENT_CURRENT 0x0000 314#define EXT2_EXTENT_MOVE_MASK 0x000F 315#define EXT2_EXTENT_ROOT 0x0001 316#define EXT2_EXTENT_LAST_LEAF 0x0002 317#define EXT2_EXTENT_FIRST_SIB 0x0003 318#define EXT2_EXTENT_LAST_SIB 0x0004 319#define EXT2_EXTENT_NEXT_SIB 0x0005 320#define EXT2_EXTENT_PREV_SIB 0x0006 321#define EXT2_EXTENT_NEXT_LEAF 0x0007 322#define EXT2_EXTENT_PREV_LEAF 0x0008 323#define EXT2_EXTENT_NEXT 0x0009 324#define EXT2_EXTENT_PREV 0x000A 325#define EXT2_EXTENT_UP 0x000B 326#define EXT2_EXTENT_DOWN 0x000C 327#define EXT2_EXTENT_DOWN_AND_LAST 0x000D 328 329/* 330 * Flags used by ext2fs_extent_insert() 331 */ 332 333#define EXT2_EXTENT_INSERT_AFTER 0x0001 334 335/* 336 * Data structure returned by ext2fs_extent_get_info() 337 */ 338struct ext2_extent_info { 339 int curr_entry; 340 int curr_level; 341 int num_entries; 342 int max_entries; 343 int max_depth; 344 int bytes_avail; 345 blk64_t max_lblk; 346 blk64_t max_pblk; 347 __u32 max_len; 348 __u32 max_uninit_len; 349}; 350 351/* 352 * Flags for directory block reading and writing functions 353 */ 354#define EXT2_DIRBLOCK_V2_STRUCT 0x0001 355 356/* 357 * Return flags for the directory iterator functions 358 */ 359#define DIRENT_CHANGED 1 360#define DIRENT_ABORT 2 361#define DIRENT_ERROR 3 362 363/* 364 * Directory iterator flags 365 */ 366 367#define DIRENT_FLAG_INCLUDE_EMPTY 1 368#define DIRENT_FLAG_INCLUDE_REMOVED 2 369 370#define DIRENT_DOT_FILE 1 371#define DIRENT_DOT_DOT_FILE 2 372#define DIRENT_OTHER_FILE 3 373#define DIRENT_DELETED_FILE 4 374 375/* 376 * Inode scan definitions 377 */ 378typedef struct ext2_struct_inode_scan *ext2_inode_scan; 379 380/* 381 * ext2fs_scan flags 382 */ 383#define EXT2_SF_CHK_BADBLOCKS 0x0001 384#define EXT2_SF_BAD_INODE_BLK 0x0002 385#define EXT2_SF_BAD_EXTRA_BYTES 0x0004 386#define EXT2_SF_SKIP_MISSING_ITABLE 0x0008 387#define EXT2_SF_DO_LAZY 0x0010 388 389/* 390 * ext2fs_check_if_mounted flags 391 */ 392#define EXT2_MF_MOUNTED 1 393#define EXT2_MF_ISROOT 2 394#define EXT2_MF_READONLY 4 395#define EXT2_MF_SWAP 8 396#define EXT2_MF_BUSY 16 397 398/* 399 * Ext2/linux mode flags. We define them here so that we don't need 400 * to depend on the OS's sys/stat.h, since we may be compiling on a 401 * non-Linux system. 402 */ 403#define LINUX_S_IFMT 00170000 404#define LINUX_S_IFSOCK 0140000 405#define LINUX_S_IFLNK 0120000 406#define LINUX_S_IFREG 0100000 407#define LINUX_S_IFBLK 0060000 408#define LINUX_S_IFDIR 0040000 409#define LINUX_S_IFCHR 0020000 410#define LINUX_S_IFIFO 0010000 411#define LINUX_S_ISUID 0004000 412#define LINUX_S_ISGID 0002000 413#define LINUX_S_ISVTX 0001000 414 415#define LINUX_S_IRWXU 00700 416#define LINUX_S_IRUSR 00400 417#define LINUX_S_IWUSR 00200 418#define LINUX_S_IXUSR 00100 419 420#define LINUX_S_IRWXG 00070 421#define LINUX_S_IRGRP 00040 422#define LINUX_S_IWGRP 00020 423#define LINUX_S_IXGRP 00010 424 425#define LINUX_S_IRWXO 00007 426#define LINUX_S_IROTH 00004 427#define LINUX_S_IWOTH 00002 428#define LINUX_S_IXOTH 00001 429 430#define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK) 431#define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG) 432#define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR) 433#define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR) 434#define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK) 435#define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO) 436#define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK) 437 438/* 439 * ext2 size of an inode 440 */ 441#define EXT2_I_SIZE(i) ((i)->i_size | ((__u64) (i)->i_size_high << 32)) 442 443/* 444 * ext2_icount_t abstraction 445 */ 446#define EXT2_ICOUNT_OPT_INCREMENT 0x01 447 448typedef struct ext2_icount *ext2_icount_t; 449 450/* 451 * Flags for ext2fs_bmap 452 */ 453#define BMAP_ALLOC 0x0001 454#define BMAP_SET 0x0002 455 456/* 457 * Flags for imager.c functions 458 */ 459#define IMAGER_FLAG_INODEMAP 1 460#define IMAGER_FLAG_SPARSEWRITE 2 461 462/* 463 * For checking structure magic numbers... 464 */ 465 466#define EXT2_CHECK_MAGIC(struct, code) \ 467 if ((struct)->magic != (code)) return (code) 468 469 470/* 471 * For ext2 compression support 472 */ 473#define EXT2FS_COMPRESSED_BLKADDR ((blk_t) -1) 474#define HOLE_BLKADDR(_b) ((_b) == 0 || (_b) == EXT2FS_COMPRESSED_BLKADDR) 475 476/* 477 * Features supported by this version of the library 478 */ 479#define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\ 480 EXT2_FEATURE_COMPAT_IMAGIC_INODES|\ 481 EXT3_FEATURE_COMPAT_HAS_JOURNAL|\ 482 EXT2_FEATURE_COMPAT_RESIZE_INODE|\ 483 EXT2_FEATURE_COMPAT_DIR_INDEX|\ 484 EXT2_FEATURE_COMPAT_LAZY_BG|\ 485 EXT2_FEATURE_COMPAT_EXT_ATTR) 486 487/* This #ifdef is temporary until compression is fully supported */ 488#ifdef ENABLE_COMPRESSION 489#ifndef I_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL 490/* If the below warning bugs you, then have 491 `CPPFLAGS=-DI_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL' in your 492 environment at configure time. */ 493 #warning "Compression support is experimental" 494#endif 495#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 496 EXT2_FEATURE_INCOMPAT_COMPRESSION|\ 497 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 498 EXT2_FEATURE_INCOMPAT_META_BG|\ 499 EXT3_FEATURE_INCOMPAT_RECOVER|\ 500 EXT4_FEATURE_INCOMPAT_FLEX_BG) 501#else 502#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 503 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 504 EXT2_FEATURE_INCOMPAT_META_BG|\ 505 EXT3_FEATURE_INCOMPAT_RECOVER|\ 506 EXT4_FEATURE_INCOMPAT_FLEX_BG) 507#endif 508#define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\ 509 EXT2_FEATURE_RO_COMPAT_LARGE_FILE) 510 511/* 512 * These features are only allowed if EXT2_FLAG_SOFTSUPP_FEATURES is passed 513 * to ext2fs_openfs() 514 */ 515#define EXT2_LIB_SOFTSUPP_INCOMPAT (EXT3_FEATURE_INCOMPAT_EXTENTS) 516#define EXT2_LIB_SOFTSUPP_RO_COMPAT (EXT4_FEATURE_RO_COMPAT_HUGE_FILE|\ 517 EXT4_FEATURE_RO_COMPAT_GDT_CSUM|\ 518 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|\ 519 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE) 520 521/* 522 * function prototypes 523 */ 524 525/* alloc.c */ 526extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode, 527 ext2fs_inode_bitmap map, ext2_ino_t *ret); 528extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal, 529 ext2fs_block_bitmap map, blk_t *ret); 530extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start, 531 blk_t finish, int num, 532 ext2fs_block_bitmap map, 533 blk_t *ret); 534extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal, 535 char *block_buf, blk_t *ret); 536 537/* alloc_sb.c */ 538extern int ext2fs_reserve_super_and_bgd(ext2_filsys fs, 539 dgrp_t group, 540 ext2fs_block_bitmap bmap); 541 542/* alloc_stats.c */ 543void ext2fs_inode_alloc_stats(ext2_filsys fs, ext2_ino_t ino, int inuse); 544void ext2fs_inode_alloc_stats2(ext2_filsys fs, ext2_ino_t ino, 545 int inuse, int isdir); 546void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse); 547 548/* alloc_tables.c */ 549extern errcode_t ext2fs_allocate_tables(ext2_filsys fs); 550extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group, 551 ext2fs_block_bitmap bmap); 552 553/* badblocks.c */ 554extern errcode_t ext2fs_u32_list_create(ext2_u32_list *ret, int size); 555extern errcode_t ext2fs_u32_list_add(ext2_u32_list bb, __u32 blk); 556extern int ext2fs_u32_list_find(ext2_u32_list bb, __u32 blk); 557extern int ext2fs_u32_list_test(ext2_u32_list bb, blk_t blk); 558extern errcode_t ext2fs_u32_list_iterate_begin(ext2_u32_list bb, 559 ext2_u32_iterate *ret); 560extern int ext2fs_u32_list_iterate(ext2_u32_iterate iter, blk_t *blk); 561extern void ext2fs_u32_list_iterate_end(ext2_u32_iterate iter); 562extern errcode_t ext2fs_u32_copy(ext2_u32_list src, ext2_u32_list *dest); 563extern int ext2fs_u32_list_equal(ext2_u32_list bb1, ext2_u32_list bb2); 564 565extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret, 566 int size); 567extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb, 568 blk_t blk); 569extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb, 570 blk_t blk); 571extern int ext2fs_u32_list_del(ext2_u32_list bb, __u32 blk); 572extern void ext2fs_badblocks_list_del(ext2_u32_list bb, __u32 blk); 573extern errcode_t 574 ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb, 575 ext2_badblocks_iterate *ret); 576extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter, 577 blk_t *blk); 578extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter); 579extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src, 580 ext2_badblocks_list *dest); 581extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1, 582 ext2_badblocks_list bb2); 583extern int ext2fs_u32_list_count(ext2_u32_list bb); 584 585/* bb_compat */ 586extern errcode_t badblocks_list_create(badblocks_list *ret, int size); 587extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk); 588extern int badblocks_list_test(badblocks_list bb, blk_t blk); 589extern errcode_t badblocks_list_iterate_begin(badblocks_list bb, 590 badblocks_iterate *ret); 591extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk); 592extern void badblocks_list_iterate_end(badblocks_iterate iter); 593extern void badblocks_list_free(badblocks_list bb); 594 595/* bb_inode.c */ 596extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs, 597 ext2_badblocks_list bb_list); 598 599/* bitmaps.c */ 600extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap); 601extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap); 602extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src, 603 ext2fs_generic_bitmap *dest); 604extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs); 605extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs); 606extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs); 607extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs); 608extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs, 609 const char *descr, 610 ext2fs_block_bitmap *ret); 611extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs, 612 const char *descr, 613 ext2fs_inode_bitmap *ret); 614extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap, 615 ext2_ino_t end, ext2_ino_t *oend); 616extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap, 617 blk_t end, blk_t *oend); 618extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap); 619extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap); 620extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs); 621extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs); 622extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end, 623 ext2fs_inode_bitmap bmap); 624extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end, 625 ext2fs_block_bitmap bmap); 626extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1, 627 ext2fs_block_bitmap bm2); 628extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1, 629 ext2fs_inode_bitmap bm2); 630extern errcode_t ext2fs_set_inode_bitmap_range(ext2fs_inode_bitmap bmap, 631 ext2_ino_t start, unsigned int num, 632 void *in); 633extern errcode_t ext2fs_get_inode_bitmap_range(ext2fs_inode_bitmap bmap, 634 ext2_ino_t start, unsigned int num, 635 void *out); 636extern errcode_t ext2fs_set_block_bitmap_range(ext2fs_block_bitmap bmap, 637 blk_t start, unsigned int num, 638 void *in); 639extern errcode_t ext2fs_get_block_bitmap_range(ext2fs_block_bitmap bmap, 640 blk_t start, unsigned int num, 641 void *out); 642 643 644/* block.c */ 645extern errcode_t ext2fs_block_iterate(ext2_filsys fs, 646 ext2_ino_t ino, 647 int flags, 648 char *block_buf, 649 int (*func)(ext2_filsys fs, 650 blk_t *blocknr, 651 int blockcnt, 652 void *priv_data), 653 void *priv_data); 654errcode_t ext2fs_block_iterate2(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 e2_blkcnt_t blockcnt, 661 blk_t ref_blk, 662 int ref_offset, 663 void *priv_data), 664 void *priv_data); 665 666/* bmap.c */ 667extern errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino, 668 struct ext2_inode *inode, 669 char *block_buf, int bmap_flags, 670 blk_t block, blk_t *phys_blk); 671 672 673#if 0 674/* bmove.c */ 675extern errcode_t ext2fs_move_blocks(ext2_filsys fs, 676 ext2fs_block_bitmap reserve, 677 ext2fs_block_bitmap alloc_map, 678 int flags); 679#endif 680 681/* check_desc.c */ 682extern errcode_t ext2fs_check_desc(ext2_filsys fs); 683 684/* closefs.c */ 685extern errcode_t ext2fs_close(ext2_filsys fs); 686extern errcode_t ext2fs_flush(ext2_filsys fs); 687extern int ext2fs_bg_has_super(ext2_filsys fs, int group_block); 688extern int ext2fs_super_and_bgd_loc(ext2_filsys fs, 689 dgrp_t group, 690 blk_t *ret_super_blk, 691 blk_t *ret_old_desc_blk, 692 blk_t *ret_new_desc_blk, 693 int *ret_meta_bg); 694extern void ext2fs_update_dynamic_rev(ext2_filsys fs); 695 696/* dblist.c */ 697 698extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs); 699extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist); 700extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ext2_ino_t ino, 701 blk_t blk, int blockcnt); 702extern void ext2fs_dblist_sort(ext2_dblist dblist, 703 EXT2_QSORT_TYPE (*sortfunc)(const void *, 704 const void *)); 705extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist, 706 int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info, 707 void *priv_data), 708 void *priv_data); 709extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ext2_ino_t ino, 710 blk_t blk, int blockcnt); 711extern errcode_t ext2fs_copy_dblist(ext2_dblist src, 712 ext2_dblist *dest); 713extern int ext2fs_dblist_count(ext2_dblist dblist); 714 715/* dblist_dir.c */ 716extern errcode_t 717 ext2fs_dblist_dir_iterate(ext2_dblist dblist, 718 int flags, 719 char *block_buf, 720 int (*func)(ext2_ino_t dir, 721 int entry, 722 struct ext2_dir_entry *dirent, 723 int offset, 724 int blocksize, 725 char *buf, 726 void *priv_data), 727 void *priv_data); 728 729/* dirblock.c */ 730extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block, 731 void *buf); 732extern errcode_t ext2fs_read_dir_block2(ext2_filsys fs, blk_t block, 733 void *buf, int flags); 734extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block, 735 void *buf); 736extern errcode_t ext2fs_write_dir_block2(ext2_filsys fs, blk_t block, 737 void *buf, int flags); 738 739/* dirhash.c */ 740extern errcode_t ext2fs_dirhash(int version, const char *name, int len, 741 const __u32 *seed, 742 ext2_dirhash_t *ret_hash, 743 ext2_dirhash_t *ret_minor_hash); 744 745 746/* dir_iterate.c */ 747extern errcode_t ext2fs_dir_iterate(ext2_filsys fs, 748 ext2_ino_t dir, 749 int flags, 750 char *block_buf, 751 int (*func)(struct ext2_dir_entry *dirent, 752 int offset, 753 int blocksize, 754 char *buf, 755 void *priv_data), 756 void *priv_data); 757extern errcode_t ext2fs_dir_iterate2(ext2_filsys fs, 758 ext2_ino_t dir, 759 int flags, 760 char *block_buf, 761 int (*func)(ext2_ino_t dir, 762 int entry, 763 struct ext2_dir_entry *dirent, 764 int offset, 765 int blocksize, 766 char *buf, 767 void *priv_data), 768 void *priv_data); 769 770/* dupfs.c */ 771extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest); 772 773/* expanddir.c */ 774extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir); 775 776/* ext_attr.c */ 777extern errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf); 778extern errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block, 779 void *buf); 780extern errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk, 781 char *block_buf, 782 int adjust, __u32 *newcount); 783 784/* extent.c */ 785extern errcode_t ext2fs_extent_header_verify(void *ptr, int size); 786extern errcode_t ext2fs_extent_open(ext2_filsys fs, ext2_ino_t ino, 787 ext2_extent_handle_t *handle); 788extern errcode_t ext2fs_extent_get(ext2_extent_handle_t handle, 789 int flags, struct ext2fs_extent *extent); 790extern errcode_t ext2fs_extent_replace(ext2_extent_handle_t handle, int flags, 791 struct ext2fs_extent *extent); 792extern errcode_t ext2fs_extent_insert(ext2_extent_handle_t handle, int flags, 793 struct ext2fs_extent *extent); 794extern errcode_t ext2fs_extent_delete(ext2_extent_handle_t handle, int flags); 795extern errcode_t ext2fs_extent_get_info(ext2_extent_handle_t handle, 796 struct ext2_extent_info *info); 797extern errcode_t ext2fs_extent_goto(ext2_extent_handle_t handle, 798 blk64_t blk); 799 800/* fileio.c */ 801extern errcode_t ext2fs_file_open2(ext2_filsys fs, ext2_ino_t ino, 802 struct ext2_inode *inode, 803 int flags, ext2_file_t *ret); 804extern errcode_t ext2fs_file_open(ext2_filsys fs, ext2_ino_t ino, 805 int flags, ext2_file_t *ret); 806extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file); 807extern errcode_t ext2fs_file_close(ext2_file_t file); 808extern errcode_t ext2fs_file_flush(ext2_file_t file); 809extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf, 810 unsigned int wanted, unsigned int *got); 811extern errcode_t ext2fs_file_write(ext2_file_t file, const void *buf, 812 unsigned int nbytes, unsigned int *written); 813extern errcode_t ext2fs_file_llseek(ext2_file_t file, __u64 offset, 814 int whence, __u64 *ret_pos); 815extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset, 816 int whence, ext2_off_t *ret_pos); 817errcode_t ext2fs_file_get_lsize(ext2_file_t file, __u64 *ret_size); 818extern ext2_off_t ext2fs_file_get_size(ext2_file_t file); 819extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size); 820 821/* finddev.c */ 822extern char *ext2fs_find_block_device(dev_t device); 823 824/* flushb.c */ 825extern errcode_t ext2fs_sync_device(int fd, int flushb); 826 827/* freefs.c */ 828extern void ext2fs_free(ext2_filsys fs); 829extern void ext2fs_free_dblist(ext2_dblist dblist); 830extern void ext2fs_badblocks_list_free(ext2_badblocks_list bb); 831extern void ext2fs_u32_list_free(ext2_u32_list bb); 832 833/* gen_bitmap.c */ 834extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap); 835extern errcode_t ext2fs_make_generic_bitmap(errcode_t magic, ext2_filsys fs, 836 __u32 start, __u32 end, 837 __u32 real_end, 838 const char *descr, char *init_map, 839 ext2fs_generic_bitmap *ret); 840extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start, 841 __u32 end, 842 __u32 real_end, 843 const char *descr, 844 ext2fs_generic_bitmap *ret); 845extern errcode_t ext2fs_copy_generic_bitmap(ext2fs_generic_bitmap src, 846 ext2fs_generic_bitmap *dest); 847extern void ext2fs_clear_generic_bitmap(ext2fs_generic_bitmap bitmap); 848extern errcode_t ext2fs_fudge_generic_bitmap_end(ext2fs_inode_bitmap bitmap, 849 errcode_t magic, 850 errcode_t neq, 851 ext2_ino_t end, 852 ext2_ino_t *oend); 853extern void ext2fs_set_generic_bitmap_padding(ext2fs_generic_bitmap map); 854extern errcode_t ext2fs_resize_generic_bitmap(errcode_t magic, 855 __u32 new_end, 856 __u32 new_real_end, 857 ext2fs_generic_bitmap bmap); 858extern errcode_t ext2fs_compare_generic_bitmap(errcode_t magic, errcode_t neq, 859 ext2fs_generic_bitmap bm1, 860 ext2fs_generic_bitmap bm2); 861extern errcode_t ext2fs_get_generic_bitmap_range(ext2fs_generic_bitmap bmap, 862 errcode_t magic, 863 __u32 start, __u32 num, 864 void *out); 865extern errcode_t ext2fs_set_generic_bitmap_range(ext2fs_generic_bitmap bmap, 866 errcode_t magic, 867 __u32 start, __u32 num, 868 void *in); 869 870/* getsize.c */ 871extern errcode_t ext2fs_get_device_size(const char *file, int blocksize, 872 blk_t *retblocks); 873 874/* getsectsize.c */ 875errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize); 876 877/* imager.c */ 878extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags); 879extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags); 880extern errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd, int flags); 881extern errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd, int flags); 882extern errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags); 883extern errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags); 884 885/* ind_block.c */ 886errcode_t ext2fs_read_ind_block(ext2_filsys fs, blk_t blk, void *buf); 887errcode_t ext2fs_write_ind_block(ext2_filsys fs, blk_t blk, void *buf); 888 889/* initialize.c */ 890extern errcode_t ext2fs_initialize(const char *name, int flags, 891 struct ext2_super_block *param, 892 io_manager manager, ext2_filsys *ret_fs); 893 894/* icount.c */ 895extern void ext2fs_free_icount(ext2_icount_t icount); 896extern errcode_t ext2fs_create_icount_tdb(ext2_filsys fs, char *tdb_dir, 897 int flags, ext2_icount_t *ret); 898extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags, 899 unsigned int size, 900 ext2_icount_t hint, ext2_icount_t *ret); 901extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags, 902 unsigned int size, 903 ext2_icount_t *ret); 904extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ext2_ino_t ino, 905 __u16 *ret); 906extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ext2_ino_t ino, 907 __u16 *ret); 908extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ext2_ino_t ino, 909 __u16 *ret); 910extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ext2_ino_t ino, 911 __u16 count); 912extern ext2_ino_t ext2fs_get_icount_size(ext2_icount_t icount); 913errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *); 914 915/* inode.c */ 916extern errcode_t ext2fs_flush_icache(ext2_filsys fs); 917extern errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan, 918 ext2_ino_t *ino, 919 struct ext2_inode *inode, 920 int bufsize); 921extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks, 922 ext2_inode_scan *ret_scan); 923extern void ext2fs_close_inode_scan(ext2_inode_scan scan); 924extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino, 925 struct ext2_inode *inode); 926extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan, 927 int group); 928extern void ext2fs_set_inode_callback 929 (ext2_inode_scan scan, 930 errcode_t (*done_group)(ext2_filsys fs, 931 ext2_inode_scan scan, 932 dgrp_t group, 933 void * priv_data), 934 void *done_group_data); 935extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags, 936 int clear_flags); 937extern errcode_t ext2fs_read_inode_full(ext2_filsys fs, ext2_ino_t ino, 938 struct ext2_inode * inode, 939 int bufsize); 940extern errcode_t ext2fs_read_inode (ext2_filsys fs, ext2_ino_t ino, 941 struct ext2_inode * inode); 942extern errcode_t ext2fs_write_inode_full(ext2_filsys fs, ext2_ino_t ino, 943 struct ext2_inode * inode, 944 int bufsize); 945extern errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino, 946 struct ext2_inode * inode); 947extern errcode_t ext2fs_write_new_inode(ext2_filsys fs, ext2_ino_t ino, 948 struct ext2_inode * inode); 949extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); 950extern errcode_t ext2fs_check_directory(ext2_filsys fs, ext2_ino_t ino); 951 952/* inode_io.c */ 953extern io_manager inode_io_manager; 954extern errcode_t ext2fs_inode_io_intern(ext2_filsys fs, ext2_ino_t ino, 955 char **name); 956extern errcode_t ext2fs_inode_io_intern2(ext2_filsys fs, ext2_ino_t ino, 957 struct ext2_inode *inode, 958 char **name); 959 960/* ismounted.c */ 961extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags); 962extern errcode_t ext2fs_check_mount_point(const char *device, int *mount_flags, 963 char *mtpt, int mtlen); 964 965/* namei.c */ 966extern errcode_t ext2fs_lookup(ext2_filsys fs, ext2_ino_t dir, const char *name, 967 int namelen, char *buf, ext2_ino_t *inode); 968extern errcode_t ext2fs_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 969 const char *name, ext2_ino_t *inode); 970errcode_t ext2fs_namei_follow(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 971 const char *name, ext2_ino_t *inode); 972extern errcode_t ext2fs_follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 973 ext2_ino_t inode, ext2_ino_t *res_inode); 974 975/* native.c */ 976int ext2fs_native_flag(void); 977 978/* newdir.c */ 979extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino, 980 ext2_ino_t parent_ino, char **block); 981 982/* mkdir.c */ 983extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum, 984 const char *name); 985 986/* mkjournal.c */ 987extern errcode_t ext2fs_create_journal_superblock(ext2_filsys fs, 988 __u32 size, int flags, 989 char **ret_jsb); 990extern errcode_t ext2fs_add_journal_device(ext2_filsys fs, 991 ext2_filsys journal_dev); 992extern errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t size, 993 int flags); 994extern int ext2fs_default_journal_size(__u64 blocks); 995 996/* openfs.c */ 997extern errcode_t ext2fs_open(const char *name, int flags, int superblock, 998 unsigned int block_size, io_manager manager, 999 ext2_filsys *ret_fs); 1000extern errcode_t ext2fs_open2(const char *name, const char *io_options, 1001 int flags, int superblock, 1002 unsigned int block_size, io_manager manager, 1003 ext2_filsys *ret_fs); 1004extern blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block, 1005 dgrp_t i); 1006errcode_t ext2fs_get_data_io(ext2_filsys fs, io_channel *old_io); 1007errcode_t ext2fs_set_data_io(ext2_filsys fs, io_channel new_io); 1008errcode_t ext2fs_rewrite_to_io(ext2_filsys fs, io_channel new_io); 1009 1010/* get_pathname.c */ 1011extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino, 1012 char **name); 1013 1014/* link.c */ 1015errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name, 1016 ext2_ino_t ino, int flags); 1017errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir, const char *name, 1018 ext2_ino_t ino, int flags); 1019 1020/* read_bb.c */ 1021extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs, 1022 ext2_badblocks_list *bb_list); 1023 1024/* read_bb_file.c */ 1025extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f, 1026 ext2_badblocks_list *bb_list, 1027 void *priv_data, 1028 void (*invalid)(ext2_filsys fs, 1029 blk_t blk, 1030 char *badstr, 1031 void *priv_data)); 1032extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f, 1033 ext2_badblocks_list *bb_list, 1034 void (*invalid)(ext2_filsys fs, 1035 blk_t blk)); 1036 1037/* res_gdt.c */ 1038extern errcode_t ext2fs_create_resize_inode(ext2_filsys fs); 1039 1040/* swapfs.c */ 1041extern void ext2fs_swap_ext_attr(char *to, char *from, int bufsize, 1042 int has_header); 1043extern void ext2fs_swap_super(struct ext2_super_block * super); 1044extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp); 1045extern void ext2fs_swap_inode_full(ext2_filsys fs, struct ext2_inode_large *t, 1046 struct ext2_inode_large *f, int hostorder, 1047 int bufsize); 1048extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t, 1049 struct ext2_inode *f, int hostorder); 1050 1051/* valid_blk.c */ 1052extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode); 1053 1054/* version.c */ 1055extern int ext2fs_parse_version_string(const char *ver_string); 1056extern int ext2fs_get_library_version(const char **ver_string, 1057 const char **date_string); 1058 1059/* write_bb_file.c */ 1060extern errcode_t ext2fs_write_bb_FILE(ext2_badblocks_list bb_list, 1061 unsigned int flags, 1062 FILE *f); 1063 1064 1065/* inline functions */ 1066extern errcode_t ext2fs_get_mem(unsigned long size, void *ptr); 1067extern errcode_t ext2fs_get_array(unsigned long count, unsigned long size, void *ptr); 1068extern errcode_t ext2fs_free_mem(void *ptr); 1069extern errcode_t ext2fs_resize_mem(unsigned long old_size, 1070 unsigned long size, void *ptr); 1071extern void ext2fs_mark_super_dirty(ext2_filsys fs); 1072extern void ext2fs_mark_changed(ext2_filsys fs); 1073extern int ext2fs_test_changed(ext2_filsys fs); 1074extern void ext2fs_mark_valid(ext2_filsys fs); 1075extern void ext2fs_unmark_valid(ext2_filsys fs); 1076extern int ext2fs_test_valid(ext2_filsys fs); 1077extern void ext2fs_mark_ib_dirty(ext2_filsys fs); 1078extern void ext2fs_mark_bb_dirty(ext2_filsys fs); 1079extern int ext2fs_test_ib_dirty(ext2_filsys fs); 1080extern int ext2fs_test_bb_dirty(ext2_filsys fs); 1081extern int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk); 1082extern int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino); 1083extern blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group); 1084extern blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group); 1085extern blk_t ext2fs_inode_data_blocks(ext2_filsys fs, 1086 struct ext2_inode *inode); 1087extern unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b); 1088 1089/* 1090 * The actual inlined functions definitions themselves... 1091 * 1092 * If NO_INLINE_FUNCS is defined, then we won't try to do inline 1093 * functions at all! 1094 */ 1095#if (defined(INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS)) 1096#ifdef INCLUDE_INLINE_FUNCS 1097#define _INLINE_ extern 1098#else 1099#ifdef __GNUC__ 1100#define _INLINE_ extern __inline__ 1101#else /* For Watcom C */ 1102#define _INLINE_ extern inline 1103#endif 1104#endif 1105 1106#ifndef EXT2_CUSTOM_MEMORY_ROUTINES 1107#include <string.h> 1108/* 1109 * Allocate memory 1110 */ 1111_INLINE_ errcode_t ext2fs_get_mem(unsigned long size, void *ptr) 1112{ 1113 void *pp; 1114 1115 pp = malloc(size); 1116 if (!pp) 1117 return EXT2_ET_NO_MEMORY; 1118 memcpy(ptr, &pp, sizeof (pp)); 1119 return 0; 1120} 1121 1122_INLINE_ errcode_t ext2fs_get_array(unsigned long count, unsigned long size, void *ptr) 1123{ 1124 if (count && (-1UL)/count<size) 1125 return EXT2_ET_NO_MEMORY; //maybe define EXT2_ET_OVERFLOW ? 1126 return ext2fs_get_mem(count*size, ptr); 1127} 1128 1129/* 1130 * Free memory 1131 */ 1132_INLINE_ errcode_t ext2fs_free_mem(void *ptr) 1133{ 1134 void *p; 1135 1136 memcpy(&p, ptr, sizeof(p)); 1137 free(p); 1138 p = 0; 1139 memcpy(ptr, &p, sizeof(p)); 1140 return 0; 1141} 1142 1143/* 1144 * Resize memory 1145 */ 1146_INLINE_ errcode_t ext2fs_resize_mem(unsigned long EXT2FS_ATTR((unused)) old_size, 1147 unsigned long size, void *ptr) 1148{ 1149 void *p; 1150 1151 /* Use "memcpy" for pointer assignments here to avoid problems 1152 * with C99 strict type aliasing rules. */ 1153 memcpy(&p, ptr, sizeof(p)); 1154 p = realloc(p, size); 1155 if (!p) 1156 return EXT2_ET_NO_MEMORY; 1157 memcpy(ptr, &p, sizeof(p)); 1158 return 0; 1159} 1160#endif /* Custom memory routines */ 1161 1162/* 1163 * Mark a filesystem superblock as dirty 1164 */ 1165_INLINE_ void ext2fs_mark_super_dirty(ext2_filsys fs) 1166{ 1167 fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_CHANGED; 1168} 1169 1170/* 1171 * Mark a filesystem as changed 1172 */ 1173_INLINE_ void ext2fs_mark_changed(ext2_filsys fs) 1174{ 1175 fs->flags |= EXT2_FLAG_CHANGED; 1176} 1177 1178/* 1179 * Check to see if a filesystem has changed 1180 */ 1181_INLINE_ int ext2fs_test_changed(ext2_filsys fs) 1182{ 1183 return (fs->flags & EXT2_FLAG_CHANGED); 1184} 1185 1186/* 1187 * Mark a filesystem as valid 1188 */ 1189_INLINE_ void ext2fs_mark_valid(ext2_filsys fs) 1190{ 1191 fs->flags |= EXT2_FLAG_VALID; 1192} 1193 1194/* 1195 * Mark a filesystem as NOT valid 1196 */ 1197_INLINE_ void ext2fs_unmark_valid(ext2_filsys fs) 1198{ 1199 fs->flags &= ~EXT2_FLAG_VALID; 1200} 1201 1202/* 1203 * Check to see if a filesystem is valid 1204 */ 1205_INLINE_ int ext2fs_test_valid(ext2_filsys fs) 1206{ 1207 return (fs->flags & EXT2_FLAG_VALID); 1208} 1209 1210/* 1211 * Mark the inode bitmap as dirty 1212 */ 1213_INLINE_ void ext2fs_mark_ib_dirty(ext2_filsys fs) 1214{ 1215 fs->flags |= EXT2_FLAG_IB_DIRTY | EXT2_FLAG_CHANGED; 1216} 1217 1218/* 1219 * Mark the block bitmap as dirty 1220 */ 1221_INLINE_ void ext2fs_mark_bb_dirty(ext2_filsys fs) 1222{ 1223 fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_CHANGED; 1224} 1225 1226/* 1227 * Check to see if a filesystem's inode bitmap is dirty 1228 */ 1229_INLINE_ int ext2fs_test_ib_dirty(ext2_filsys fs) 1230{ 1231 return (fs->flags & EXT2_FLAG_IB_DIRTY); 1232} 1233 1234/* 1235 * Check to see if a filesystem's block bitmap is dirty 1236 */ 1237_INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs) 1238{ 1239 return (fs->flags & EXT2_FLAG_BB_DIRTY); 1240} 1241 1242/* 1243 * Return the group # of a block 1244 */ 1245_INLINE_ int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk) 1246{ 1247 return (blk - fs->super->s_first_data_block) / 1248 fs->super->s_blocks_per_group; 1249} 1250 1251/* 1252 * Return the group # of an inode number 1253 */ 1254_INLINE_ int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino) 1255{ 1256 return (ino - 1) / fs->super->s_inodes_per_group; 1257} 1258 1259/* 1260 * Return the first block (inclusive) in a group 1261 */ 1262_INLINE_ blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group) 1263{ 1264 return fs->super->s_first_data_block + 1265 (group * fs->super->s_blocks_per_group); 1266} 1267 1268/* 1269 * Return the last block (inclusive) in a group 1270 */ 1271_INLINE_ blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group) 1272{ 1273 return (group == fs->group_desc_count - 1 ? 1274 fs->super->s_blocks_count - 1 : 1275 ext2fs_group_first_block(fs, group) + 1276 (fs->super->s_blocks_per_group - 1)); 1277} 1278 1279_INLINE_ blk_t ext2fs_inode_data_blocks(ext2_filsys fs, 1280 struct ext2_inode *inode) 1281{ 1282 return inode->i_blocks - 1283 (inode->i_file_acl ? fs->blocksize >> 9 : 0); 1284} 1285 1286/* 1287 * This is an efficient, overflow safe way of calculating ceil((1.0 * a) / b) 1288 */ 1289_INLINE_ unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b) 1290{ 1291 if (!a) 1292 return 0; 1293 return ((a - 1) / b) + 1; 1294} 1295#undef _INLINE_ 1296#endif 1297 1298#ifdef __cplusplus 1299} 1300#endif 1301 1302#endif /* _EXT2FS_EXT2FS_H */ 1303