ext2fs.h revision 357d1863d64ce807c2904e101fc87d3f6be2f3ca
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 * Flags for directory block reading and writing functions 294 */ 295#define EXT2_DIRBLOCK_V2_STRUCT 0x0001 296 297/* 298 * Return flags for the directory iterator functions 299 */ 300#define DIRENT_CHANGED 1 301#define DIRENT_ABORT 2 302#define DIRENT_ERROR 3 303 304/* 305 * Directory iterator flags 306 */ 307 308#define DIRENT_FLAG_INCLUDE_EMPTY 1 309#define DIRENT_FLAG_INCLUDE_REMOVED 2 310 311#define DIRENT_DOT_FILE 1 312#define DIRENT_DOT_DOT_FILE 2 313#define DIRENT_OTHER_FILE 3 314#define DIRENT_DELETED_FILE 4 315 316/* 317 * Inode scan definitions 318 */ 319typedef struct ext2_struct_inode_scan *ext2_inode_scan; 320 321/* 322 * ext2fs_scan flags 323 */ 324#define EXT2_SF_CHK_BADBLOCKS 0x0001 325#define EXT2_SF_BAD_INODE_BLK 0x0002 326#define EXT2_SF_BAD_EXTRA_BYTES 0x0004 327#define EXT2_SF_SKIP_MISSING_ITABLE 0x0008 328#define EXT2_SF_DO_LAZY 0x0010 329 330/* 331 * ext2fs_check_if_mounted flags 332 */ 333#define EXT2_MF_MOUNTED 1 334#define EXT2_MF_ISROOT 2 335#define EXT2_MF_READONLY 4 336#define EXT2_MF_SWAP 8 337#define EXT2_MF_BUSY 16 338 339/* 340 * Ext2/linux mode flags. We define them here so that we don't need 341 * to depend on the OS's sys/stat.h, since we may be compiling on a 342 * non-Linux system. 343 */ 344#define LINUX_S_IFMT 00170000 345#define LINUX_S_IFSOCK 0140000 346#define LINUX_S_IFLNK 0120000 347#define LINUX_S_IFREG 0100000 348#define LINUX_S_IFBLK 0060000 349#define LINUX_S_IFDIR 0040000 350#define LINUX_S_IFCHR 0020000 351#define LINUX_S_IFIFO 0010000 352#define LINUX_S_ISUID 0004000 353#define LINUX_S_ISGID 0002000 354#define LINUX_S_ISVTX 0001000 355 356#define LINUX_S_IRWXU 00700 357#define LINUX_S_IRUSR 00400 358#define LINUX_S_IWUSR 00200 359#define LINUX_S_IXUSR 00100 360 361#define LINUX_S_IRWXG 00070 362#define LINUX_S_IRGRP 00040 363#define LINUX_S_IWGRP 00020 364#define LINUX_S_IXGRP 00010 365 366#define LINUX_S_IRWXO 00007 367#define LINUX_S_IROTH 00004 368#define LINUX_S_IWOTH 00002 369#define LINUX_S_IXOTH 00001 370 371#define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK) 372#define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG) 373#define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR) 374#define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR) 375#define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK) 376#define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO) 377#define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK) 378 379/* 380 * ext2 size of an inode 381 */ 382#define EXT2_I_SIZE(i) ((i)->i_size | ((__u64) (i)->i_size_high << 32)) 383 384/* 385 * ext2_icount_t abstraction 386 */ 387#define EXT2_ICOUNT_OPT_INCREMENT 0x01 388 389typedef struct ext2_icount *ext2_icount_t; 390 391/* 392 * Flags for ext2fs_bmap 393 */ 394#define BMAP_ALLOC 0x0001 395#define BMAP_SET 0x0002 396 397/* 398 * Flags for imager.c functions 399 */ 400#define IMAGER_FLAG_INODEMAP 1 401#define IMAGER_FLAG_SPARSEWRITE 2 402 403/* 404 * For checking structure magic numbers... 405 */ 406 407#define EXT2_CHECK_MAGIC(struct, code) \ 408 if ((struct)->magic != (code)) return (code) 409 410 411/* 412 * For ext2 compression support 413 */ 414#define EXT2FS_COMPRESSED_BLKADDR ((blk_t) -1) 415#define HOLE_BLKADDR(_b) ((_b) == 0 || (_b) == EXT2FS_COMPRESSED_BLKADDR) 416 417/* 418 * Features supported by this version of the library 419 */ 420#define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\ 421 EXT2_FEATURE_COMPAT_IMAGIC_INODES|\ 422 EXT3_FEATURE_COMPAT_HAS_JOURNAL|\ 423 EXT2_FEATURE_COMPAT_RESIZE_INODE|\ 424 EXT2_FEATURE_COMPAT_DIR_INDEX|\ 425 EXT2_FEATURE_COMPAT_LAZY_BG|\ 426 EXT2_FEATURE_COMPAT_EXT_ATTR) 427 428/* This #ifdef is temporary until compression is fully supported */ 429#ifdef ENABLE_COMPRESSION 430#ifndef I_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL 431/* If the below warning bugs you, then have 432 `CPPFLAGS=-DI_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL' in your 433 environment at configure time. */ 434 #warning "Compression support is experimental" 435#endif 436#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 437 EXT2_FEATURE_INCOMPAT_COMPRESSION|\ 438 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 439 EXT2_FEATURE_INCOMPAT_META_BG|\ 440 EXT3_FEATURE_INCOMPAT_RECOVER|\ 441 EXT4_FEATURE_INCOMPAT_FLEX_BG) 442#else 443#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 444 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 445 EXT2_FEATURE_INCOMPAT_META_BG|\ 446 EXT3_FEATURE_INCOMPAT_RECOVER|\ 447 EXT4_FEATURE_INCOMPAT_FLEX_BG) 448#endif 449#define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\ 450 EXT2_FEATURE_RO_COMPAT_LARGE_FILE) 451 452/* 453 * These features are only allowed if EXT2_FLAG_SOFTSUPP_FEATURES is passed 454 * to ext2fs_openfs() 455 */ 456#define EXT2_LIB_SOFTSUPP_INCOMPAT (EXT3_FEATURE_INCOMPAT_EXTENTS) 457#define EXT2_LIB_SOFTSUPP_RO_COMPAT (EXT4_FEATURE_RO_COMPAT_HUGE_FILE|\ 458 EXT4_FEATURE_RO_COMPAT_GDT_CSUM|\ 459 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|\ 460 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE) 461 462/* 463 * function prototypes 464 */ 465 466/* alloc.c */ 467extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode, 468 ext2fs_inode_bitmap map, ext2_ino_t *ret); 469extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal, 470 ext2fs_block_bitmap map, blk_t *ret); 471extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start, 472 blk_t finish, int num, 473 ext2fs_block_bitmap map, 474 blk_t *ret); 475extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal, 476 char *block_buf, blk_t *ret); 477 478/* alloc_sb.c */ 479extern int ext2fs_reserve_super_and_bgd(ext2_filsys fs, 480 dgrp_t group, 481 ext2fs_block_bitmap bmap); 482 483/* alloc_stats.c */ 484void ext2fs_inode_alloc_stats(ext2_filsys fs, ext2_ino_t ino, int inuse); 485void ext2fs_inode_alloc_stats2(ext2_filsys fs, ext2_ino_t ino, 486 int inuse, int isdir); 487void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse); 488 489/* alloc_tables.c */ 490extern errcode_t ext2fs_allocate_tables(ext2_filsys fs); 491extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group, 492 ext2fs_block_bitmap bmap); 493 494/* badblocks.c */ 495extern errcode_t ext2fs_u32_list_create(ext2_u32_list *ret, int size); 496extern errcode_t ext2fs_u32_list_add(ext2_u32_list bb, __u32 blk); 497extern int ext2fs_u32_list_find(ext2_u32_list bb, __u32 blk); 498extern int ext2fs_u32_list_test(ext2_u32_list bb, blk_t blk); 499extern errcode_t ext2fs_u32_list_iterate_begin(ext2_u32_list bb, 500 ext2_u32_iterate *ret); 501extern int ext2fs_u32_list_iterate(ext2_u32_iterate iter, blk_t *blk); 502extern void ext2fs_u32_list_iterate_end(ext2_u32_iterate iter); 503extern errcode_t ext2fs_u32_copy(ext2_u32_list src, ext2_u32_list *dest); 504extern int ext2fs_u32_list_equal(ext2_u32_list bb1, ext2_u32_list bb2); 505 506extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret, 507 int size); 508extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb, 509 blk_t blk); 510extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb, 511 blk_t blk); 512extern int ext2fs_u32_list_del(ext2_u32_list bb, __u32 blk); 513extern void ext2fs_badblocks_list_del(ext2_u32_list bb, __u32 blk); 514extern errcode_t 515 ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb, 516 ext2_badblocks_iterate *ret); 517extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter, 518 blk_t *blk); 519extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter); 520extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src, 521 ext2_badblocks_list *dest); 522extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1, 523 ext2_badblocks_list bb2); 524extern int ext2fs_u32_list_count(ext2_u32_list bb); 525 526/* bb_compat */ 527extern errcode_t badblocks_list_create(badblocks_list *ret, int size); 528extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk); 529extern int badblocks_list_test(badblocks_list bb, blk_t blk); 530extern errcode_t badblocks_list_iterate_begin(badblocks_list bb, 531 badblocks_iterate *ret); 532extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk); 533extern void badblocks_list_iterate_end(badblocks_iterate iter); 534extern void badblocks_list_free(badblocks_list bb); 535 536/* bb_inode.c */ 537extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs, 538 ext2_badblocks_list bb_list); 539 540/* bitmaps.c */ 541extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap); 542extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap); 543extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src, 544 ext2fs_generic_bitmap *dest); 545extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs); 546extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs); 547extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs); 548extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs); 549extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs, 550 const char *descr, 551 ext2fs_block_bitmap *ret); 552extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs, 553 const char *descr, 554 ext2fs_inode_bitmap *ret); 555extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap, 556 ext2_ino_t end, ext2_ino_t *oend); 557extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap, 558 blk_t end, blk_t *oend); 559extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap); 560extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap); 561extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs); 562extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs); 563extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end, 564 ext2fs_inode_bitmap bmap); 565extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end, 566 ext2fs_block_bitmap bmap); 567extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1, 568 ext2fs_block_bitmap bm2); 569extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1, 570 ext2fs_inode_bitmap bm2); 571extern errcode_t ext2fs_set_inode_bitmap_range(ext2fs_inode_bitmap bmap, 572 ext2_ino_t start, unsigned int num, 573 void *in); 574extern errcode_t ext2fs_get_inode_bitmap_range(ext2fs_inode_bitmap bmap, 575 ext2_ino_t start, unsigned int num, 576 void *out); 577extern errcode_t ext2fs_set_block_bitmap_range(ext2fs_block_bitmap bmap, 578 blk_t start, unsigned int num, 579 void *in); 580extern errcode_t ext2fs_get_block_bitmap_range(ext2fs_block_bitmap bmap, 581 blk_t start, unsigned int num, 582 void *out); 583 584 585/* block.c */ 586extern errcode_t ext2fs_block_iterate(ext2_filsys fs, 587 ext2_ino_t ino, 588 int flags, 589 char *block_buf, 590 int (*func)(ext2_filsys fs, 591 blk_t *blocknr, 592 int blockcnt, 593 void *priv_data), 594 void *priv_data); 595errcode_t ext2fs_block_iterate2(ext2_filsys fs, 596 ext2_ino_t ino, 597 int flags, 598 char *block_buf, 599 int (*func)(ext2_filsys fs, 600 blk_t *blocknr, 601 e2_blkcnt_t blockcnt, 602 blk_t ref_blk, 603 int ref_offset, 604 void *priv_data), 605 void *priv_data); 606 607/* bmap.c */ 608extern errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino, 609 struct ext2_inode *inode, 610 char *block_buf, int bmap_flags, 611 blk_t block, blk_t *phys_blk); 612 613 614#if 0 615/* bmove.c */ 616extern errcode_t ext2fs_move_blocks(ext2_filsys fs, 617 ext2fs_block_bitmap reserve, 618 ext2fs_block_bitmap alloc_map, 619 int flags); 620#endif 621 622/* check_desc.c */ 623extern errcode_t ext2fs_check_desc(ext2_filsys fs); 624 625/* closefs.c */ 626extern errcode_t ext2fs_close(ext2_filsys fs); 627extern errcode_t ext2fs_flush(ext2_filsys fs); 628extern int ext2fs_bg_has_super(ext2_filsys fs, int group_block); 629extern int ext2fs_super_and_bgd_loc(ext2_filsys fs, 630 dgrp_t group, 631 blk_t *ret_super_blk, 632 blk_t *ret_old_desc_blk, 633 blk_t *ret_new_desc_blk, 634 int *ret_meta_bg); 635extern void ext2fs_update_dynamic_rev(ext2_filsys fs); 636 637/* dblist.c */ 638 639extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs); 640extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist); 641extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ext2_ino_t ino, 642 blk_t blk, int blockcnt); 643extern void ext2fs_dblist_sort(ext2_dblist dblist, 644 EXT2_QSORT_TYPE (*sortfunc)(const void *, 645 const void *)); 646extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist, 647 int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info, 648 void *priv_data), 649 void *priv_data); 650extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ext2_ino_t ino, 651 blk_t blk, int blockcnt); 652extern errcode_t ext2fs_copy_dblist(ext2_dblist src, 653 ext2_dblist *dest); 654extern int ext2fs_dblist_count(ext2_dblist dblist); 655 656/* dblist_dir.c */ 657extern errcode_t 658 ext2fs_dblist_dir_iterate(ext2_dblist dblist, 659 int flags, 660 char *block_buf, 661 int (*func)(ext2_ino_t dir, 662 int entry, 663 struct ext2_dir_entry *dirent, 664 int offset, 665 int blocksize, 666 char *buf, 667 void *priv_data), 668 void *priv_data); 669 670/* dirblock.c */ 671extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block, 672 void *buf); 673extern errcode_t ext2fs_read_dir_block2(ext2_filsys fs, blk_t block, 674 void *buf, int flags); 675extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block, 676 void *buf); 677extern errcode_t ext2fs_write_dir_block2(ext2_filsys fs, blk_t block, 678 void *buf, int flags); 679 680/* dirhash.c */ 681extern errcode_t ext2fs_dirhash(int version, const char *name, int len, 682 const __u32 *seed, 683 ext2_dirhash_t *ret_hash, 684 ext2_dirhash_t *ret_minor_hash); 685 686 687/* dir_iterate.c */ 688extern errcode_t ext2fs_dir_iterate(ext2_filsys fs, 689 ext2_ino_t dir, 690 int flags, 691 char *block_buf, 692 int (*func)(struct ext2_dir_entry *dirent, 693 int offset, 694 int blocksize, 695 char *buf, 696 void *priv_data), 697 void *priv_data); 698extern errcode_t ext2fs_dir_iterate2(ext2_filsys fs, 699 ext2_ino_t dir, 700 int flags, 701 char *block_buf, 702 int (*func)(ext2_ino_t dir, 703 int entry, 704 struct ext2_dir_entry *dirent, 705 int offset, 706 int blocksize, 707 char *buf, 708 void *priv_data), 709 void *priv_data); 710 711/* dupfs.c */ 712extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest); 713 714/* expanddir.c */ 715extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir); 716 717/* ext_attr.c */ 718extern errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf); 719extern errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block, 720 void *buf); 721extern errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk, 722 char *block_buf, 723 int adjust, __u32 *newcount); 724 725/* fileio.c */ 726extern errcode_t ext2fs_file_open2(ext2_filsys fs, ext2_ino_t ino, 727 struct ext2_inode *inode, 728 int flags, ext2_file_t *ret); 729extern errcode_t ext2fs_file_open(ext2_filsys fs, ext2_ino_t ino, 730 int flags, ext2_file_t *ret); 731extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file); 732extern errcode_t ext2fs_file_close(ext2_file_t file); 733extern errcode_t ext2fs_file_flush(ext2_file_t file); 734extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf, 735 unsigned int wanted, unsigned int *got); 736extern errcode_t ext2fs_file_write(ext2_file_t file, const void *buf, 737 unsigned int nbytes, unsigned int *written); 738extern errcode_t ext2fs_file_llseek(ext2_file_t file, __u64 offset, 739 int whence, __u64 *ret_pos); 740extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset, 741 int whence, ext2_off_t *ret_pos); 742errcode_t ext2fs_file_get_lsize(ext2_file_t file, __u64 *ret_size); 743extern ext2_off_t ext2fs_file_get_size(ext2_file_t file); 744extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size); 745 746/* finddev.c */ 747extern char *ext2fs_find_block_device(dev_t device); 748 749/* flushb.c */ 750extern errcode_t ext2fs_sync_device(int fd, int flushb); 751 752/* freefs.c */ 753extern void ext2fs_free(ext2_filsys fs); 754extern void ext2fs_free_dblist(ext2_dblist dblist); 755extern void ext2fs_badblocks_list_free(ext2_badblocks_list bb); 756extern void ext2fs_u32_list_free(ext2_u32_list bb); 757 758/* gen_bitmap.c */ 759extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap); 760extern errcode_t ext2fs_make_generic_bitmap(errcode_t magic, ext2_filsys fs, 761 __u32 start, __u32 end, 762 __u32 real_end, 763 const char *descr, char *init_map, 764 ext2fs_generic_bitmap *ret); 765extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start, 766 __u32 end, 767 __u32 real_end, 768 const char *descr, 769 ext2fs_generic_bitmap *ret); 770extern errcode_t ext2fs_copy_generic_bitmap(ext2fs_generic_bitmap src, 771 ext2fs_generic_bitmap *dest); 772extern void ext2fs_clear_generic_bitmap(ext2fs_generic_bitmap bitmap); 773extern errcode_t ext2fs_fudge_generic_bitmap_end(ext2fs_inode_bitmap bitmap, 774 errcode_t magic, 775 errcode_t neq, 776 ext2_ino_t end, 777 ext2_ino_t *oend); 778extern void ext2fs_set_generic_bitmap_padding(ext2fs_generic_bitmap map); 779extern errcode_t ext2fs_resize_generic_bitmap(errcode_t magic, 780 __u32 new_end, 781 __u32 new_real_end, 782 ext2fs_generic_bitmap bmap); 783extern errcode_t ext2fs_compare_generic_bitmap(errcode_t magic, errcode_t neq, 784 ext2fs_generic_bitmap bm1, 785 ext2fs_generic_bitmap bm2); 786extern errcode_t ext2fs_get_generic_bitmap_range(ext2fs_generic_bitmap bmap, 787 errcode_t magic, 788 __u32 start, __u32 num, 789 void *out); 790extern errcode_t ext2fs_set_generic_bitmap_range(ext2fs_generic_bitmap bmap, 791 errcode_t magic, 792 __u32 start, __u32 num, 793 void *in); 794 795/* getsize.c */ 796extern errcode_t ext2fs_get_device_size(const char *file, int blocksize, 797 blk_t *retblocks); 798 799/* getsectsize.c */ 800errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize); 801 802/* imager.c */ 803extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags); 804extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags); 805extern errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd, int flags); 806extern errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd, int flags); 807extern errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags); 808extern errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags); 809 810/* ind_block.c */ 811errcode_t ext2fs_read_ind_block(ext2_filsys fs, blk_t blk, void *buf); 812errcode_t ext2fs_write_ind_block(ext2_filsys fs, blk_t blk, void *buf); 813 814/* initialize.c */ 815extern errcode_t ext2fs_initialize(const char *name, int flags, 816 struct ext2_super_block *param, 817 io_manager manager, ext2_filsys *ret_fs); 818 819/* icount.c */ 820extern void ext2fs_free_icount(ext2_icount_t icount); 821extern errcode_t ext2fs_create_icount_tdb(ext2_filsys fs, char *tdb_dir, 822 int flags, ext2_icount_t *ret); 823extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags, 824 unsigned int size, 825 ext2_icount_t hint, ext2_icount_t *ret); 826extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags, 827 unsigned int size, 828 ext2_icount_t *ret); 829extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ext2_ino_t ino, 830 __u16 *ret); 831extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ext2_ino_t ino, 832 __u16 *ret); 833extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ext2_ino_t ino, 834 __u16 *ret); 835extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ext2_ino_t ino, 836 __u16 count); 837extern ext2_ino_t ext2fs_get_icount_size(ext2_icount_t icount); 838errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *); 839 840/* inode.c */ 841extern errcode_t ext2fs_flush_icache(ext2_filsys fs); 842extern errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan, 843 ext2_ino_t *ino, 844 struct ext2_inode *inode, 845 int bufsize); 846extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks, 847 ext2_inode_scan *ret_scan); 848extern void ext2fs_close_inode_scan(ext2_inode_scan scan); 849extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino, 850 struct ext2_inode *inode); 851extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan, 852 int group); 853extern void ext2fs_set_inode_callback 854 (ext2_inode_scan scan, 855 errcode_t (*done_group)(ext2_filsys fs, 856 ext2_inode_scan scan, 857 dgrp_t group, 858 void * priv_data), 859 void *done_group_data); 860extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags, 861 int clear_flags); 862extern errcode_t ext2fs_read_inode_full(ext2_filsys fs, ext2_ino_t ino, 863 struct ext2_inode * inode, 864 int bufsize); 865extern errcode_t ext2fs_read_inode (ext2_filsys fs, ext2_ino_t ino, 866 struct ext2_inode * inode); 867extern errcode_t ext2fs_write_inode_full(ext2_filsys fs, ext2_ino_t ino, 868 struct ext2_inode * inode, 869 int bufsize); 870extern errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino, 871 struct ext2_inode * inode); 872extern errcode_t ext2fs_write_new_inode(ext2_filsys fs, ext2_ino_t ino, 873 struct ext2_inode * inode); 874extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); 875extern errcode_t ext2fs_check_directory(ext2_filsys fs, ext2_ino_t ino); 876 877/* inode_io.c */ 878extern io_manager inode_io_manager; 879extern errcode_t ext2fs_inode_io_intern(ext2_filsys fs, ext2_ino_t ino, 880 char **name); 881extern errcode_t ext2fs_inode_io_intern2(ext2_filsys fs, ext2_ino_t ino, 882 struct ext2_inode *inode, 883 char **name); 884 885/* ismounted.c */ 886extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags); 887extern errcode_t ext2fs_check_mount_point(const char *device, int *mount_flags, 888 char *mtpt, int mtlen); 889 890/* namei.c */ 891extern errcode_t ext2fs_lookup(ext2_filsys fs, ext2_ino_t dir, const char *name, 892 int namelen, char *buf, ext2_ino_t *inode); 893extern errcode_t ext2fs_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 894 const char *name, ext2_ino_t *inode); 895errcode_t ext2fs_namei_follow(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 896 const char *name, ext2_ino_t *inode); 897extern errcode_t ext2fs_follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 898 ext2_ino_t inode, ext2_ino_t *res_inode); 899 900/* native.c */ 901int ext2fs_native_flag(void); 902 903/* newdir.c */ 904extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino, 905 ext2_ino_t parent_ino, char **block); 906 907/* mkdir.c */ 908extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum, 909 const char *name); 910 911/* mkjournal.c */ 912extern errcode_t ext2fs_create_journal_superblock(ext2_filsys fs, 913 __u32 size, int flags, 914 char **ret_jsb); 915extern errcode_t ext2fs_add_journal_device(ext2_filsys fs, 916 ext2_filsys journal_dev); 917extern errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t size, 918 int flags); 919extern int ext2fs_default_journal_size(__u64 blocks); 920 921/* openfs.c */ 922extern errcode_t ext2fs_open(const char *name, int flags, int superblock, 923 unsigned int block_size, io_manager manager, 924 ext2_filsys *ret_fs); 925extern errcode_t ext2fs_open2(const char *name, const char *io_options, 926 int flags, int superblock, 927 unsigned int block_size, io_manager manager, 928 ext2_filsys *ret_fs); 929extern blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block, 930 dgrp_t i); 931errcode_t ext2fs_get_data_io(ext2_filsys fs, io_channel *old_io); 932errcode_t ext2fs_set_data_io(ext2_filsys fs, io_channel new_io); 933errcode_t ext2fs_rewrite_to_io(ext2_filsys fs, io_channel new_io); 934 935/* get_pathname.c */ 936extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino, 937 char **name); 938 939/* link.c */ 940errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name, 941 ext2_ino_t ino, int flags); 942errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir, const char *name, 943 ext2_ino_t ino, int flags); 944 945/* read_bb.c */ 946extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs, 947 ext2_badblocks_list *bb_list); 948 949/* read_bb_file.c */ 950extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f, 951 ext2_badblocks_list *bb_list, 952 void *priv_data, 953 void (*invalid)(ext2_filsys fs, 954 blk_t blk, 955 char *badstr, 956 void *priv_data)); 957extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f, 958 ext2_badblocks_list *bb_list, 959 void (*invalid)(ext2_filsys fs, 960 blk_t blk)); 961 962/* res_gdt.c */ 963extern errcode_t ext2fs_create_resize_inode(ext2_filsys fs); 964 965/* swapfs.c */ 966extern void ext2fs_swap_ext_attr(char *to, char *from, int bufsize, 967 int has_header); 968extern void ext2fs_swap_super(struct ext2_super_block * super); 969extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp); 970extern void ext2fs_swap_inode_full(ext2_filsys fs, struct ext2_inode_large *t, 971 struct ext2_inode_large *f, int hostorder, 972 int bufsize); 973extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t, 974 struct ext2_inode *f, int hostorder); 975 976/* valid_blk.c */ 977extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode); 978 979/* version.c */ 980extern int ext2fs_parse_version_string(const char *ver_string); 981extern int ext2fs_get_library_version(const char **ver_string, 982 const char **date_string); 983 984/* write_bb_file.c */ 985extern errcode_t ext2fs_write_bb_FILE(ext2_badblocks_list bb_list, 986 unsigned int flags, 987 FILE *f); 988 989 990/* inline functions */ 991extern errcode_t ext2fs_get_mem(unsigned long size, void *ptr); 992extern errcode_t ext2fs_get_array(unsigned long count, unsigned long size, void *ptr); 993extern errcode_t ext2fs_free_mem(void *ptr); 994extern errcode_t ext2fs_resize_mem(unsigned long old_size, 995 unsigned long size, void *ptr); 996extern void ext2fs_mark_super_dirty(ext2_filsys fs); 997extern void ext2fs_mark_changed(ext2_filsys fs); 998extern int ext2fs_test_changed(ext2_filsys fs); 999extern void ext2fs_mark_valid(ext2_filsys fs); 1000extern void ext2fs_unmark_valid(ext2_filsys fs); 1001extern int ext2fs_test_valid(ext2_filsys fs); 1002extern void ext2fs_mark_ib_dirty(ext2_filsys fs); 1003extern void ext2fs_mark_bb_dirty(ext2_filsys fs); 1004extern int ext2fs_test_ib_dirty(ext2_filsys fs); 1005extern int ext2fs_test_bb_dirty(ext2_filsys fs); 1006extern int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk); 1007extern int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino); 1008extern blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group); 1009extern blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group); 1010extern blk_t ext2fs_inode_data_blocks(ext2_filsys fs, 1011 struct ext2_inode *inode); 1012extern unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b); 1013 1014/* 1015 * The actual inlined functions definitions themselves... 1016 * 1017 * If NO_INLINE_FUNCS is defined, then we won't try to do inline 1018 * functions at all! 1019 */ 1020#if (defined(INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS)) 1021#ifdef INCLUDE_INLINE_FUNCS 1022#define _INLINE_ extern 1023#else 1024#ifdef __GNUC__ 1025#define _INLINE_ extern __inline__ 1026#else /* For Watcom C */ 1027#define _INLINE_ extern inline 1028#endif 1029#endif 1030 1031#ifndef EXT2_CUSTOM_MEMORY_ROUTINES 1032#include <string.h> 1033/* 1034 * Allocate memory 1035 */ 1036_INLINE_ errcode_t ext2fs_get_mem(unsigned long size, void *ptr) 1037{ 1038 void *pp; 1039 1040 pp = malloc(size); 1041 if (!pp) 1042 return EXT2_ET_NO_MEMORY; 1043 memcpy(ptr, &pp, sizeof (pp)); 1044 return 0; 1045} 1046 1047_INLINE_ errcode_t ext2fs_get_array(unsigned long count, unsigned long size, void *ptr) 1048{ 1049 if (count && (-1UL)/count<size) 1050 return EXT2_ET_NO_MEMORY; //maybe define EXT2_ET_OVERFLOW ? 1051 return ext2fs_get_mem(count*size, ptr); 1052} 1053 1054/* 1055 * Free memory 1056 */ 1057_INLINE_ errcode_t ext2fs_free_mem(void *ptr) 1058{ 1059 void *p; 1060 1061 memcpy(&p, ptr, sizeof(p)); 1062 free(p); 1063 p = 0; 1064 memcpy(ptr, &p, sizeof(p)); 1065 return 0; 1066} 1067 1068/* 1069 * Resize memory 1070 */ 1071_INLINE_ errcode_t ext2fs_resize_mem(unsigned long EXT2FS_ATTR((unused)) old_size, 1072 unsigned long size, void *ptr) 1073{ 1074 void *p; 1075 1076 /* Use "memcpy" for pointer assignments here to avoid problems 1077 * with C99 strict type aliasing rules. */ 1078 memcpy(&p, ptr, sizeof(p)); 1079 p = realloc(p, size); 1080 if (!p) 1081 return EXT2_ET_NO_MEMORY; 1082 memcpy(ptr, &p, sizeof(p)); 1083 return 0; 1084} 1085#endif /* Custom memory routines */ 1086 1087/* 1088 * Mark a filesystem superblock as dirty 1089 */ 1090_INLINE_ void ext2fs_mark_super_dirty(ext2_filsys fs) 1091{ 1092 fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_CHANGED; 1093} 1094 1095/* 1096 * Mark a filesystem as changed 1097 */ 1098_INLINE_ void ext2fs_mark_changed(ext2_filsys fs) 1099{ 1100 fs->flags |= EXT2_FLAG_CHANGED; 1101} 1102 1103/* 1104 * Check to see if a filesystem has changed 1105 */ 1106_INLINE_ int ext2fs_test_changed(ext2_filsys fs) 1107{ 1108 return (fs->flags & EXT2_FLAG_CHANGED); 1109} 1110 1111/* 1112 * Mark a filesystem as valid 1113 */ 1114_INLINE_ void ext2fs_mark_valid(ext2_filsys fs) 1115{ 1116 fs->flags |= EXT2_FLAG_VALID; 1117} 1118 1119/* 1120 * Mark a filesystem as NOT valid 1121 */ 1122_INLINE_ void ext2fs_unmark_valid(ext2_filsys fs) 1123{ 1124 fs->flags &= ~EXT2_FLAG_VALID; 1125} 1126 1127/* 1128 * Check to see if a filesystem is valid 1129 */ 1130_INLINE_ int ext2fs_test_valid(ext2_filsys fs) 1131{ 1132 return (fs->flags & EXT2_FLAG_VALID); 1133} 1134 1135/* 1136 * Mark the inode bitmap as dirty 1137 */ 1138_INLINE_ void ext2fs_mark_ib_dirty(ext2_filsys fs) 1139{ 1140 fs->flags |= EXT2_FLAG_IB_DIRTY | EXT2_FLAG_CHANGED; 1141} 1142 1143/* 1144 * Mark the block bitmap as dirty 1145 */ 1146_INLINE_ void ext2fs_mark_bb_dirty(ext2_filsys fs) 1147{ 1148 fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_CHANGED; 1149} 1150 1151/* 1152 * Check to see if a filesystem's inode bitmap is dirty 1153 */ 1154_INLINE_ int ext2fs_test_ib_dirty(ext2_filsys fs) 1155{ 1156 return (fs->flags & EXT2_FLAG_IB_DIRTY); 1157} 1158 1159/* 1160 * Check to see if a filesystem's block bitmap is dirty 1161 */ 1162_INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs) 1163{ 1164 return (fs->flags & EXT2_FLAG_BB_DIRTY); 1165} 1166 1167/* 1168 * Return the group # of a block 1169 */ 1170_INLINE_ int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk) 1171{ 1172 return (blk - fs->super->s_first_data_block) / 1173 fs->super->s_blocks_per_group; 1174} 1175 1176/* 1177 * Return the group # of an inode number 1178 */ 1179_INLINE_ int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino) 1180{ 1181 return (ino - 1) / fs->super->s_inodes_per_group; 1182} 1183 1184/* 1185 * Return the first block (inclusive) in a group 1186 */ 1187_INLINE_ blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group) 1188{ 1189 return fs->super->s_first_data_block + 1190 (group * fs->super->s_blocks_per_group); 1191} 1192 1193/* 1194 * Return the last block (inclusive) in a group 1195 */ 1196_INLINE_ blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group) 1197{ 1198 return (group == fs->group_desc_count - 1 ? 1199 fs->super->s_blocks_count - 1 : 1200 ext2fs_group_first_block(fs, group) + 1201 (fs->super->s_blocks_per_group - 1)); 1202} 1203 1204_INLINE_ blk_t ext2fs_inode_data_blocks(ext2_filsys fs, 1205 struct ext2_inode *inode) 1206{ 1207 return inode->i_blocks - 1208 (inode->i_file_acl ? fs->blocksize >> 9 : 0); 1209} 1210 1211/* 1212 * This is an efficient, overflow safe way of calculating ceil((1.0 * a) / b) 1213 */ 1214_INLINE_ unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b) 1215{ 1216 if (!a) 1217 return 0; 1218 return ((a - 1) / b) + 1; 1219} 1220#undef _INLINE_ 1221#endif 1222 1223#ifdef __cplusplus 1224} 1225#endif 1226 1227#endif /* _EXT2FS_EXT2FS_H */ 1228