ext2fs.h revision 931b58e1cb2158c1f5218059cce92e94917ef485
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 Library 8 * General Public License, version 2. 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#ifndef _XOPEN_SOURCE 33#define _XOPEN_SOURCE 600 /* for posix_memalign() */ 34#endif 35 36/* 37 * Where the master copy of the superblock is located, and how big 38 * superblocks are supposed to be. We define SUPERBLOCK_SIZE because 39 * the size of the superblock structure is not necessarily trustworthy 40 * (some versions have the padding set up so that the superblock is 41 * 1032 bytes long). 42 */ 43#define SUPERBLOCK_OFFSET 1024 44#define SUPERBLOCK_SIZE 1024 45 46/* 47 * The last ext2fs revision level that this version of the library is 48 * able to support. 49 */ 50#define EXT2_LIB_CURRENT_REV EXT2_DYNAMIC_REV 51 52#ifdef HAVE_SYS_TYPES_H 53#include <sys/types.h> 54#endif 55 56#include <stdio.h> 57#include <stdlib.h> 58#include <string.h> 59#include <errno.h> 60 61#ifndef __USE_XOPEN2K 62/* If the "#define _XOPEN_SOURCE 600" didn't succeed in declaring 63 * posix_memalign(), maybe due to <features.h> or <stdlib.h> included beforej 64 * _XOPEN_SOURCE, declare it here to avoid compiler warnings. */ 65extern int posix_memalign(void **__memptr, size_t __alignment, size_t __size); 66#endif 67 68#if EXT2_FLAT_INCLUDES 69#include "e2_types.h" 70#include "ext2_fs.h" 71#include "ext3_extents.h" 72#else 73#include <ext2fs/ext2_types.h> 74#include <ext2fs/ext2_fs.h> 75#include <ext2fs/ext3_extents.h> 76#endif /* EXT2_FLAT_INCLUDES */ 77 78typedef __u32 ext2_ino_t; 79typedef __u32 blk_t; 80typedef __u64 blk64_t; 81typedef __u32 dgrp_t; 82typedef __u32 ext2_off_t; 83typedef __u64 ext2_off64_t; 84typedef __s64 e2_blkcnt_t; 85typedef __u32 ext2_dirhash_t; 86 87#if EXT2_FLAT_INCLUDES 88#include "com_err.h" 89#include "ext2_io.h" 90#include "ext2_err.h" 91#include "ext2_ext_attr.h" 92#else 93#include <et/com_err.h> 94#include <ext2fs/ext2_io.h> 95#include <ext2fs/ext2_err.h> 96#include <ext2fs/ext2_ext_attr.h> 97#endif 98 99/* 100 * Portability help for Microsoft Visual C++ 101 */ 102#ifdef _MSC_VER 103#define EXT2_QSORT_TYPE int __cdecl 104#else 105#define EXT2_QSORT_TYPE int 106#endif 107 108typedef struct struct_ext2_filsys *ext2_filsys; 109 110#define EXT2FS_MARK_ERROR 0 111#define EXT2FS_UNMARK_ERROR 1 112#define EXT2FS_TEST_ERROR 2 113 114typedef struct ext2fs_struct_generic_bitmap *ext2fs_generic_bitmap; 115typedef struct ext2fs_struct_generic_bitmap *ext2fs_inode_bitmap; 116typedef struct ext2fs_struct_generic_bitmap *ext2fs_block_bitmap; 117 118#define EXT2_FIRST_INODE(s) EXT2_FIRST_INO(s) 119 120 121/* 122 * Badblocks list definitions 123 */ 124 125typedef struct ext2_struct_u32_list *ext2_badblocks_list; 126typedef struct ext2_struct_u32_iterate *ext2_badblocks_iterate; 127 128typedef struct ext2_struct_u32_list *ext2_u32_list; 129typedef struct ext2_struct_u32_iterate *ext2_u32_iterate; 130 131/* old */ 132typedef struct ext2_struct_u32_list *badblocks_list; 133typedef struct ext2_struct_u32_iterate *badblocks_iterate; 134 135#define BADBLOCKS_FLAG_DIRTY 1 136 137/* 138 * ext2_dblist structure and abstractions (see dblist.c) 139 */ 140struct ext2_db_entry2 { 141 ext2_ino_t ino; 142 blk64_t blk; 143 e2_blkcnt_t blockcnt; 144}; 145 146/* Ye Olde 32-bit version */ 147struct ext2_db_entry { 148 ext2_ino_t ino; 149 blk_t blk; 150 int blockcnt; 151}; 152 153typedef struct ext2_struct_dblist *ext2_dblist; 154 155#define DBLIST_ABORT 1 156 157/* 158 * ext2_fileio definitions 159 */ 160 161#define EXT2_FILE_WRITE 0x0001 162#define EXT2_FILE_CREATE 0x0002 163 164#define EXT2_FILE_MASK 0x00FF 165 166#define EXT2_FILE_BUF_DIRTY 0x4000 167#define EXT2_FILE_BUF_VALID 0x2000 168 169typedef struct ext2_file *ext2_file_t; 170 171#define EXT2_SEEK_SET 0 172#define EXT2_SEEK_CUR 1 173#define EXT2_SEEK_END 2 174 175/* 176 * Flags for the ext2_filsys structure and for ext2fs_open() 177 */ 178#define EXT2_FLAG_RW 0x01 179#define EXT2_FLAG_CHANGED 0x02 180#define EXT2_FLAG_DIRTY 0x04 181#define EXT2_FLAG_VALID 0x08 182#define EXT2_FLAG_IB_DIRTY 0x10 183#define EXT2_FLAG_BB_DIRTY 0x20 184#define EXT2_FLAG_SWAP_BYTES 0x40 185#define EXT2_FLAG_SWAP_BYTES_READ 0x80 186#define EXT2_FLAG_SWAP_BYTES_WRITE 0x100 187#define EXT2_FLAG_MASTER_SB_ONLY 0x200 188#define EXT2_FLAG_FORCE 0x400 189#define EXT2_FLAG_SUPER_ONLY 0x800 190#define EXT2_FLAG_JOURNAL_DEV_OK 0x1000 191#define EXT2_FLAG_IMAGE_FILE 0x2000 192#define EXT2_FLAG_EXCLUSIVE 0x4000 193#define EXT2_FLAG_SOFTSUPP_FEATURES 0x8000 194#define EXT2_FLAG_NOFREE_ON_ERROR 0x10000 195#define EXT2_FLAG_64BITS 0x20000 196#define EXT2_FLAG_PRINT_PROGRESS 0x40000 197#define EXT2_FLAG_DIRECT_IO 0x80000 198 199/* 200 * Special flag in the ext2 inode i_flag field that means that this is 201 * a new inode. (So that ext2_write_inode() can clear extra fields.) 202 */ 203#define EXT2_NEW_INODE_FL 0x80000000 204 205/* 206 * Flags for mkjournal 207 * 208 * EXT2_MKJOURNAL_V1_SUPER Make a (deprecated) V1 journal superblock 209 */ 210#define EXT2_MKJOURNAL_V1_SUPER 0x0000001 211 212struct opaque_ext2_group_desc; 213 214struct struct_ext2_filsys { 215 errcode_t magic; 216 io_channel io; 217 int flags; 218 char * device_name; 219 struct ext2_super_block * super; 220 unsigned int blocksize; 221 int cluster_ratio_bits; 222 dgrp_t group_desc_count; 223 unsigned long desc_blocks; 224 struct opaque_ext2_group_desc * group_desc; 225 int inode_blocks_per_group; 226 ext2fs_inode_bitmap inode_map; 227 ext2fs_block_bitmap block_map; 228 /* XXX FIXME-64: not 64-bit safe, but not used? */ 229 errcode_t (*get_blocks)(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); 230 errcode_t (*check_directory)(ext2_filsys fs, ext2_ino_t ino); 231 errcode_t (*write_bitmaps)(ext2_filsys fs); 232 errcode_t (*read_inode)(ext2_filsys fs, ext2_ino_t ino, 233 struct ext2_inode *inode); 234 errcode_t (*write_inode)(ext2_filsys fs, ext2_ino_t ino, 235 struct ext2_inode *inode); 236 ext2_badblocks_list badblocks; 237 ext2_dblist dblist; 238 __u32 stride; /* for mke2fs */ 239 struct ext2_super_block * orig_super; 240 struct ext2_image_hdr * image_header; 241 __u32 umask; 242 time_t now; 243 /* 244 * Reserved for future expansion 245 */ 246 __u32 reserved[7]; 247 248 /* 249 * Reserved for the use of the calling application. 250 */ 251 void * priv_data; 252 253 /* 254 * Inode cache 255 */ 256 struct ext2_inode_cache *icache; 257 io_channel image_io; 258 259 /* 260 * More callback functions 261 */ 262 errcode_t (*get_alloc_block)(ext2_filsys fs, blk64_t goal, 263 blk64_t *ret); 264 void (*block_alloc_stats)(ext2_filsys fs, blk64_t blk, int inuse); 265}; 266 267#if EXT2_FLAT_INCLUDES 268#include "e2_bitops.h" 269#else 270#include <ext2fs/bitops.h> 271#endif 272 273/* 274 * Return flags for the block iterator functions 275 */ 276#define BLOCK_CHANGED 1 277#define BLOCK_ABORT 2 278#define BLOCK_ERROR 4 279 280/* 281 * Block interate flags 282 * 283 * BLOCK_FLAG_APPEND, or BLOCK_FLAG_HOLE, indicates that the interator 284 * function should be called on blocks where the block number is zero. 285 * This is used by ext2fs_expand_dir() to be able to add a new block 286 * to an inode. It can also be used for programs that want to be able 287 * to deal with files that contain "holes". 288 * 289 * BLOCK_FLAG_DEPTH_TRAVERSE indicates that the iterator function for 290 * the indirect, doubly indirect, etc. blocks should be called after 291 * all of the blocks containined in the indirect blocks are processed. 292 * This is useful if you are going to be deallocating blocks from an 293 * inode. 294 * 295 * BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be 296 * called for data blocks only. 297 * 298 * BLOCK_FLAG_READ_ONLY is a promise by the caller that it will not 299 * modify returned block number. 300 * 301 * BLOCK_FLAG_NO_LARGE is for internal use only. It informs 302 * ext2fs_block_iterate2 that large files won't be accepted. 303 */ 304#define BLOCK_FLAG_APPEND 1 305#define BLOCK_FLAG_HOLE 1 306#define BLOCK_FLAG_DEPTH_TRAVERSE 2 307#define BLOCK_FLAG_DATA_ONLY 4 308#define BLOCK_FLAG_READ_ONLY 8 309 310#define BLOCK_FLAG_NO_LARGE 0x1000 311 312/* 313 * Magic "block count" return values for the block iterator function. 314 */ 315#define BLOCK_COUNT_IND (-1) 316#define BLOCK_COUNT_DIND (-2) 317#define BLOCK_COUNT_TIND (-3) 318#define BLOCK_COUNT_TRANSLATOR (-4) 319 320#if 0 321/* 322 * Flags for ext2fs_move_blocks 323 */ 324#define EXT2_BMOVE_GET_DBLIST 0x0001 325#define EXT2_BMOVE_DEBUG 0x0002 326#endif 327 328/* 329 * Generic (non-filesystem layout specific) extents structure 330 */ 331 332#define EXT2_EXTENT_FLAGS_LEAF 0x0001 333#define EXT2_EXTENT_FLAGS_UNINIT 0x0002 334#define EXT2_EXTENT_FLAGS_SECOND_VISIT 0x0004 335 336struct ext2fs_extent { 337 blk64_t e_pblk; /* first physical block */ 338 blk64_t e_lblk; /* first logical block extent covers */ 339 __u32 e_len; /* number of blocks covered by extent */ 340 __u32 e_flags; /* extent flags */ 341}; 342 343typedef struct ext2_extent_handle *ext2_extent_handle_t; 344typedef struct ext2_extent_path *ext2_extent_path_t; 345 346/* 347 * Flags used by ext2fs_extent_get() 348 */ 349#define EXT2_EXTENT_CURRENT 0x0000 350#define EXT2_EXTENT_MOVE_MASK 0x000F 351#define EXT2_EXTENT_ROOT 0x0001 352#define EXT2_EXTENT_LAST_LEAF 0x0002 353#define EXT2_EXTENT_FIRST_SIB 0x0003 354#define EXT2_EXTENT_LAST_SIB 0x0004 355#define EXT2_EXTENT_NEXT_SIB 0x0005 356#define EXT2_EXTENT_PREV_SIB 0x0006 357#define EXT2_EXTENT_NEXT_LEAF 0x0007 358#define EXT2_EXTENT_PREV_LEAF 0x0008 359#define EXT2_EXTENT_NEXT 0x0009 360#define EXT2_EXTENT_PREV 0x000A 361#define EXT2_EXTENT_UP 0x000B 362#define EXT2_EXTENT_DOWN 0x000C 363#define EXT2_EXTENT_DOWN_AND_LAST 0x000D 364 365/* 366 * Flags used by ext2fs_extent_insert() 367 */ 368#define EXT2_EXTENT_INSERT_AFTER 0x0001 /* insert after handle loc'n */ 369#define EXT2_EXTENT_INSERT_NOSPLIT 0x0002 /* insert may not cause split */ 370 371/* 372 * Flags used by ext2fs_extent_delete() 373 */ 374#define EXT2_EXTENT_DELETE_KEEP_EMPTY 0x001 /* keep node if last extnt gone */ 375 376/* 377 * Flags used by ext2fs_extent_set_bmap() 378 */ 379#define EXT2_EXTENT_SET_BMAP_UNINIT 0x0001 380 381/* 382 * Data structure returned by ext2fs_extent_get_info() 383 */ 384struct ext2_extent_info { 385 int curr_entry; 386 int curr_level; 387 int num_entries; 388 int max_entries; 389 int max_depth; 390 int bytes_avail; 391 blk64_t max_lblk; 392 blk64_t max_pblk; 393 __u32 max_len; 394 __u32 max_uninit_len; 395}; 396 397/* 398 * Flags for directory block reading and writing functions 399 */ 400#define EXT2_DIRBLOCK_V2_STRUCT 0x0001 401 402/* 403 * Return flags for the directory iterator functions 404 */ 405#define DIRENT_CHANGED 1 406#define DIRENT_ABORT 2 407#define DIRENT_ERROR 3 408 409/* 410 * Directory iterator flags 411 */ 412 413#define DIRENT_FLAG_INCLUDE_EMPTY 1 414#define DIRENT_FLAG_INCLUDE_REMOVED 2 415 416#define DIRENT_DOT_FILE 1 417#define DIRENT_DOT_DOT_FILE 2 418#define DIRENT_OTHER_FILE 3 419#define DIRENT_DELETED_FILE 4 420 421/* 422 * Inode scan definitions 423 */ 424typedef struct ext2_struct_inode_scan *ext2_inode_scan; 425 426/* 427 * ext2fs_scan flags 428 */ 429#define EXT2_SF_CHK_BADBLOCKS 0x0001 430#define EXT2_SF_BAD_INODE_BLK 0x0002 431#define EXT2_SF_BAD_EXTRA_BYTES 0x0004 432#define EXT2_SF_SKIP_MISSING_ITABLE 0x0008 433#define EXT2_SF_DO_LAZY 0x0010 434 435/* 436 * ext2fs_check_if_mounted flags 437 */ 438#define EXT2_MF_MOUNTED 1 439#define EXT2_MF_ISROOT 2 440#define EXT2_MF_READONLY 4 441#define EXT2_MF_SWAP 8 442#define EXT2_MF_BUSY 16 443 444/* 445 * Ext2/linux mode flags. We define them here so that we don't need 446 * to depend on the OS's sys/stat.h, since we may be compiling on a 447 * non-Linux system. 448 */ 449#define LINUX_S_IFMT 00170000 450#define LINUX_S_IFSOCK 0140000 451#define LINUX_S_IFLNK 0120000 452#define LINUX_S_IFREG 0100000 453#define LINUX_S_IFBLK 0060000 454#define LINUX_S_IFDIR 0040000 455#define LINUX_S_IFCHR 0020000 456#define LINUX_S_IFIFO 0010000 457#define LINUX_S_ISUID 0004000 458#define LINUX_S_ISGID 0002000 459#define LINUX_S_ISVTX 0001000 460 461#define LINUX_S_IRWXU 00700 462#define LINUX_S_IRUSR 00400 463#define LINUX_S_IWUSR 00200 464#define LINUX_S_IXUSR 00100 465 466#define LINUX_S_IRWXG 00070 467#define LINUX_S_IRGRP 00040 468#define LINUX_S_IWGRP 00020 469#define LINUX_S_IXGRP 00010 470 471#define LINUX_S_IRWXO 00007 472#define LINUX_S_IROTH 00004 473#define LINUX_S_IWOTH 00002 474#define LINUX_S_IXOTH 00001 475 476#define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK) 477#define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG) 478#define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR) 479#define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR) 480#define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK) 481#define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO) 482#define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK) 483 484/* 485 * ext2 size of an inode 486 */ 487#define EXT2_I_SIZE(i) ((i)->i_size | ((__u64) (i)->i_size_high << 32)) 488 489/* 490 * ext2_icount_t abstraction 491 */ 492#define EXT2_ICOUNT_OPT_INCREMENT 0x01 493 494typedef struct ext2_icount *ext2_icount_t; 495 496/* 497 * Flags for ext2fs_bmap 498 */ 499#define BMAP_ALLOC 0x0001 500#define BMAP_SET 0x0002 501 502/* 503 * Returned flags from ext2fs_bmap 504 */ 505#define BMAP_RET_UNINIT 0x0001 506 507/* 508 * Flags for imager.c functions 509 */ 510#define IMAGER_FLAG_INODEMAP 1 511#define IMAGER_FLAG_SPARSEWRITE 2 512 513/* 514 * For checking structure magic numbers... 515 */ 516 517#define EXT2_CHECK_MAGIC(struct, code) \ 518 if ((struct)->magic != (code)) return (code) 519 520 521/* 522 * For ext2 compression support 523 */ 524#define EXT2FS_COMPRESSED_BLKADDR ((blk_t) -1) 525#define HOLE_BLKADDR(_b) ((_b) == 0 || (_b) == EXT2FS_COMPRESSED_BLKADDR) 526 527/* 528 * Features supported by this version of the library 529 */ 530#define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\ 531 EXT2_FEATURE_COMPAT_IMAGIC_INODES|\ 532 EXT3_FEATURE_COMPAT_HAS_JOURNAL|\ 533 EXT2_FEATURE_COMPAT_RESIZE_INODE|\ 534 EXT2_FEATURE_COMPAT_DIR_INDEX|\ 535 EXT2_FEATURE_COMPAT_EXT_ATTR) 536 537/* This #ifdef is temporary until compression is fully supported */ 538#ifdef ENABLE_COMPRESSION 539#ifndef I_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL 540/* If the below warning bugs you, then have 541 `CPPFLAGS=-DI_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL' in your 542 environment at configure time. */ 543 #warning "Compression support is experimental" 544#endif 545#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 546 EXT2_FEATURE_INCOMPAT_COMPRESSION|\ 547 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 548 EXT2_FEATURE_INCOMPAT_META_BG|\ 549 EXT3_FEATURE_INCOMPAT_RECOVER|\ 550 EXT3_FEATURE_INCOMPAT_EXTENTS|\ 551 EXT4_FEATURE_INCOMPAT_FLEX_BG|\ 552 EXT4_FEATURE_INCOMPAT_64BIT) 553#else 554#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 555 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 556 EXT2_FEATURE_INCOMPAT_META_BG|\ 557 EXT3_FEATURE_INCOMPAT_RECOVER|\ 558 EXT3_FEATURE_INCOMPAT_EXTENTS|\ 559 EXT4_FEATURE_INCOMPAT_FLEX_BG|\ 560 EXT4_FEATURE_INCOMPAT_64BIT) 561#endif 562#define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\ 563 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|\ 564 EXT2_FEATURE_RO_COMPAT_LARGE_FILE|\ 565 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|\ 566 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|\ 567 EXT4_FEATURE_RO_COMPAT_GDT_CSUM|\ 568 EXT4_FEATURE_RO_COMPAT_BIGALLOC) 569 570/* 571 * These features are only allowed if EXT2_FLAG_SOFTSUPP_FEATURES is passed 572 * to ext2fs_openfs() 573 */ 574#define EXT2_LIB_SOFTSUPP_INCOMPAT (0) 575#define EXT2_LIB_SOFTSUPP_RO_COMPAT (EXT4_FEATURE_RO_COMPAT_BIGALLOC) 576 577 578/* Translate a block number to a cluster number */ 579#define EXT2FS_CLUSTER_RATIO(fs) (1 << (fs)->cluster_ratio_bits) 580#define EXT2FS_CLUSTER_MASK(fs) (EXT2FS_CLUSTER_RATIO(fs) - 1) 581#define EXT2FS_B2C(fs, blk) ((blk) >> (fs)->cluster_ratio_bits) 582/* Translate a cluster number to a block number */ 583#define EXT2FS_C2B(fs, cluster) ((cluster) << (fs)->cluster_ratio_bits) 584/* Translate # of blks to # of clusters */ 585#define EXT2FS_NUM_B2C(fs, blks) (((blks) + EXT2FS_CLUSTER_MASK(fs)) >> \ 586 (fs)->cluster_ratio_bits) 587 588/* 589 * function prototypes 590 */ 591 592/* alloc.c */ 593extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode, 594 ext2fs_inode_bitmap map, ext2_ino_t *ret); 595extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal, 596 ext2fs_block_bitmap map, blk_t *ret); 597extern errcode_t ext2fs_new_block2(ext2_filsys fs, blk64_t goal, 598 ext2fs_block_bitmap map, blk64_t *ret); 599extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start, 600 blk_t finish, int num, 601 ext2fs_block_bitmap map, 602 blk_t *ret); 603extern errcode_t ext2fs_get_free_blocks2(ext2_filsys fs, blk64_t start, 604 blk64_t finish, int num, 605 ext2fs_block_bitmap map, 606 blk64_t *ret); 607extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal, 608 char *block_buf, blk_t *ret); 609extern errcode_t ext2fs_alloc_block2(ext2_filsys fs, blk64_t goal, 610 char *block_buf, blk64_t *ret); 611extern void ext2fs_set_alloc_block_callback(ext2_filsys fs, 612 errcode_t (*func)(ext2_filsys fs, 613 blk64_t goal, 614 blk64_t *ret), 615 errcode_t (**old)(ext2_filsys fs, 616 blk64_t goal, 617 blk64_t *ret)); 618 619/* alloc_sb.c */ 620extern int ext2fs_reserve_super_and_bgd(ext2_filsys fs, 621 dgrp_t group, 622 ext2fs_block_bitmap bmap); 623extern void ext2fs_set_block_alloc_stats_callback(ext2_filsys fs, 624 void (*func)(ext2_filsys fs, 625 blk64_t blk, 626 int inuse), 627 void (**old)(ext2_filsys fs, 628 blk64_t blk, 629 int inuse)); 630 631/* alloc_stats.c */ 632void ext2fs_inode_alloc_stats(ext2_filsys fs, ext2_ino_t ino, int inuse); 633void ext2fs_inode_alloc_stats2(ext2_filsys fs, ext2_ino_t ino, 634 int inuse, int isdir); 635void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse); 636void ext2fs_block_alloc_stats2(ext2_filsys fs, blk64_t blk, int inuse); 637 638/* alloc_tables.c */ 639extern errcode_t ext2fs_allocate_tables(ext2_filsys fs); 640extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group, 641 ext2fs_block_bitmap bmap); 642 643/* badblocks.c */ 644extern errcode_t ext2fs_u32_list_create(ext2_u32_list *ret, int size); 645extern errcode_t ext2fs_u32_list_add(ext2_u32_list bb, __u32 blk); 646extern int ext2fs_u32_list_find(ext2_u32_list bb, __u32 blk); 647extern int ext2fs_u32_list_test(ext2_u32_list bb, blk_t blk); 648extern errcode_t ext2fs_u32_list_iterate_begin(ext2_u32_list bb, 649 ext2_u32_iterate *ret); 650extern int ext2fs_u32_list_iterate(ext2_u32_iterate iter, blk_t *blk); 651extern void ext2fs_u32_list_iterate_end(ext2_u32_iterate iter); 652extern errcode_t ext2fs_u32_copy(ext2_u32_list src, ext2_u32_list *dest); 653extern int ext2fs_u32_list_equal(ext2_u32_list bb1, ext2_u32_list bb2); 654 655extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret, 656 int size); 657extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb, 658 blk_t blk); 659extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb, 660 blk_t blk); 661extern int ext2fs_u32_list_del(ext2_u32_list bb, __u32 blk); 662extern void ext2fs_badblocks_list_del(ext2_u32_list bb, __u32 blk); 663extern errcode_t 664 ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb, 665 ext2_badblocks_iterate *ret); 666extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter, 667 blk_t *blk); 668extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter); 669extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src, 670 ext2_badblocks_list *dest); 671extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1, 672 ext2_badblocks_list bb2); 673extern int ext2fs_u32_list_count(ext2_u32_list bb); 674 675/* bb_compat */ 676extern errcode_t badblocks_list_create(badblocks_list *ret, int size); 677extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk); 678extern int badblocks_list_test(badblocks_list bb, blk_t blk); 679extern errcode_t badblocks_list_iterate_begin(badblocks_list bb, 680 badblocks_iterate *ret); 681extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk); 682extern void badblocks_list_iterate_end(badblocks_iterate iter); 683extern void badblocks_list_free(badblocks_list bb); 684 685/* bb_inode.c */ 686extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs, 687 ext2_badblocks_list bb_list); 688 689/* bitmaps.c */ 690extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap); 691extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap); 692extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src, 693 ext2fs_generic_bitmap *dest); 694extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs); 695extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs); 696extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs); 697extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs); 698extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs, 699 const char *descr, 700 ext2fs_block_bitmap *ret); 701extern errcode_t ext2fs_allocate_subcluster_bitmap(ext2_filsys fs, 702 const char *descr, 703 ext2fs_block_bitmap *ret); 704extern int ext2fs_get_bitmap_granularity(ext2fs_block_bitmap bitmap); 705extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs, 706 const char *descr, 707 ext2fs_inode_bitmap *ret); 708extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap, 709 ext2_ino_t end, ext2_ino_t *oend); 710extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap, 711 blk_t end, blk_t *oend); 712extern errcode_t ext2fs_fudge_block_bitmap_end2(ext2fs_block_bitmap bitmap, 713 blk64_t end, blk64_t *oend); 714extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap); 715extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap); 716extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs); 717extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs); 718extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end, 719 ext2fs_inode_bitmap bmap); 720extern errcode_t ext2fs_resize_inode_bitmap2(__u64 new_end, 721 __u64 new_real_end, 722 ext2fs_inode_bitmap bmap); 723extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end, 724 ext2fs_block_bitmap bmap); 725extern errcode_t ext2fs_resize_block_bitmap2(__u64 new_end, 726 __u64 new_real_end, 727 ext2fs_block_bitmap bmap); 728extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1, 729 ext2fs_block_bitmap bm2); 730extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1, 731 ext2fs_inode_bitmap bm2); 732extern errcode_t ext2fs_set_inode_bitmap_range(ext2fs_inode_bitmap bmap, 733 ext2_ino_t start, unsigned int num, 734 void *in); 735extern errcode_t ext2fs_set_inode_bitmap_range2(ext2fs_inode_bitmap bmap, 736 __u64 start, size_t num, 737 void *in); 738extern errcode_t ext2fs_get_inode_bitmap_range(ext2fs_inode_bitmap bmap, 739 ext2_ino_t start, unsigned int num, 740 void *out); 741extern errcode_t ext2fs_get_inode_bitmap_range2(ext2fs_inode_bitmap bmap, 742 __u64 start, size_t num, 743 void *out); 744extern errcode_t ext2fs_set_block_bitmap_range(ext2fs_block_bitmap bmap, 745 blk_t start, unsigned int num, 746 void *in); 747extern errcode_t ext2fs_set_block_bitmap_range2(ext2fs_block_bitmap bmap, 748 blk64_t start, size_t num, 749 void *in); 750extern errcode_t ext2fs_get_block_bitmap_range(ext2fs_block_bitmap bmap, 751 blk_t start, unsigned int num, 752 void *out); 753extern errcode_t ext2fs_get_block_bitmap_range2(ext2fs_block_bitmap bmap, 754 blk64_t start, size_t num, 755 void *out); 756 757/* blknum.c */ 758extern dgrp_t ext2fs_group_of_blk2(ext2_filsys fs, blk64_t); 759extern blk64_t ext2fs_group_first_block2(ext2_filsys fs, dgrp_t group); 760extern blk64_t ext2fs_group_last_block2(ext2_filsys fs, dgrp_t group); 761extern blk64_t ext2fs_inode_data_blocks2(ext2_filsys fs, 762 struct ext2_inode *inode); 763extern blk64_t ext2fs_inode_i_blocks(ext2_filsys fs, 764 struct ext2_inode *inode); 765extern blk64_t ext2fs_blocks_count(struct ext2_super_block *super); 766extern void ext2fs_blocks_count_set(struct ext2_super_block *super, 767 blk64_t blk); 768extern void ext2fs_blocks_count_add(struct ext2_super_block *super, 769 blk64_t blk); 770extern blk64_t ext2fs_r_blocks_count(struct ext2_super_block *super); 771extern void ext2fs_r_blocks_count_set(struct ext2_super_block *super, 772 blk64_t blk); 773extern void ext2fs_r_blocks_count_add(struct ext2_super_block *super, 774 blk64_t blk); 775extern blk64_t ext2fs_free_blocks_count(struct ext2_super_block *super); 776extern void ext2fs_free_blocks_count_set(struct ext2_super_block *super, 777 blk64_t blk); 778extern void ext2fs_free_blocks_count_add(struct ext2_super_block *super, 779 blk64_t blk); 780/* Block group descriptor accessor functions */ 781extern struct ext2_group_desc *ext2fs_group_desc(ext2_filsys fs, 782 struct opaque_ext2_group_desc *gdp, 783 dgrp_t group); 784extern blk64_t ext2fs_block_bitmap_loc(ext2_filsys fs, dgrp_t group); 785extern void ext2fs_block_bitmap_loc_set(ext2_filsys fs, dgrp_t group, 786 blk64_t blk); 787extern blk64_t ext2fs_inode_bitmap_loc(ext2_filsys fs, dgrp_t group); 788extern void ext2fs_inode_bitmap_loc_set(ext2_filsys fs, dgrp_t group, 789 blk64_t blk); 790extern blk64_t ext2fs_inode_table_loc(ext2_filsys fs, dgrp_t group); 791extern void ext2fs_inode_table_loc_set(ext2_filsys fs, dgrp_t group, 792 blk64_t blk); 793extern __u32 ext2fs_bg_free_blocks_count(ext2_filsys fs, dgrp_t group); 794extern void ext2fs_bg_free_blocks_count_set(ext2_filsys fs, dgrp_t group, 795 __u32 n); 796extern __u32 ext2fs_bg_free_inodes_count(ext2_filsys fs, dgrp_t group); 797extern void ext2fs_bg_free_inodes_count_set(ext2_filsys fs, dgrp_t group, 798 __u32 n); 799extern __u32 ext2fs_bg_used_dirs_count(ext2_filsys fs, dgrp_t group); 800extern void ext2fs_bg_used_dirs_count_set(ext2_filsys fs, dgrp_t group, 801 __u32 n); 802extern __u32 ext2fs_bg_itable_unused(ext2_filsys fs, dgrp_t group); 803extern void ext2fs_bg_itable_unused_set(ext2_filsys fs, dgrp_t group, 804 __u32 n); 805extern __u16 ext2fs_bg_flags(ext2_filsys fs, dgrp_t group); 806extern void ext2fs_bg_flags_zap(ext2_filsys fs, dgrp_t group); 807extern int ext2fs_bg_flags_test(ext2_filsys fs, dgrp_t group, __u16 bg_flag); 808extern void ext2fs_bg_flags_set(ext2_filsys fs, dgrp_t group, __u16 bg_flags); 809extern void ext2fs_bg_flags_clear(ext2_filsys fs, dgrp_t group, __u16 bg_flags); 810extern __u16 ext2fs_bg_checksum(ext2_filsys fs, dgrp_t group); 811extern void ext2fs_bg_checksum_set(ext2_filsys fs, dgrp_t group, __u16 checksum); 812extern blk64_t ext2fs_file_acl_block(const struct ext2_inode *inode); 813extern void ext2fs_file_acl_block_set(struct ext2_inode *inode, blk64_t blk); 814 815/* block.c */ 816extern errcode_t ext2fs_block_iterate(ext2_filsys fs, 817 ext2_ino_t ino, 818 int flags, 819 char *block_buf, 820 int (*func)(ext2_filsys fs, 821 blk_t *blocknr, 822 int blockcnt, 823 void *priv_data), 824 void *priv_data); 825errcode_t ext2fs_block_iterate2(ext2_filsys fs, 826 ext2_ino_t ino, 827 int flags, 828 char *block_buf, 829 int (*func)(ext2_filsys fs, 830 blk_t *blocknr, 831 e2_blkcnt_t blockcnt, 832 blk_t ref_blk, 833 int ref_offset, 834 void *priv_data), 835 void *priv_data); 836errcode_t ext2fs_block_iterate3(ext2_filsys fs, 837 ext2_ino_t ino, 838 int flags, 839 char *block_buf, 840 int (*func)(ext2_filsys fs, 841 blk64_t *blocknr, 842 e2_blkcnt_t blockcnt, 843 blk64_t ref_blk, 844 int ref_offset, 845 void *priv_data), 846 void *priv_data); 847 848/* bmap.c */ 849extern errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino, 850 struct ext2_inode *inode, 851 char *block_buf, int bmap_flags, 852 blk_t block, blk_t *phys_blk); 853extern errcode_t ext2fs_bmap2(ext2_filsys fs, ext2_ino_t ino, 854 struct ext2_inode *inode, 855 char *block_buf, int bmap_flags, blk64_t block, 856 int *ret_flags, blk64_t *phys_blk); 857 858#if 0 859/* bmove.c */ 860extern errcode_t ext2fs_move_blocks(ext2_filsys fs, 861 ext2fs_block_bitmap reserve, 862 ext2fs_block_bitmap alloc_map, 863 int flags); 864#endif 865 866/* check_desc.c */ 867extern errcode_t ext2fs_check_desc(ext2_filsys fs); 868 869/* closefs.c */ 870extern errcode_t ext2fs_close(ext2_filsys fs); 871extern errcode_t ext2fs_flush(ext2_filsys fs); 872extern int ext2fs_bg_has_super(ext2_filsys fs, int group_block); 873extern errcode_t ext2fs_super_and_bgd_loc2(ext2_filsys fs, 874 dgrp_t group, 875 blk64_t *ret_super_blk, 876 blk64_t *ret_old_desc_blk, 877 blk64_t *ret_new_desc_blk, 878 blk_t *ret_used_blks); 879extern int ext2fs_super_and_bgd_loc(ext2_filsys fs, 880 dgrp_t group, 881 blk_t *ret_super_blk, 882 blk_t *ret_old_desc_blk, 883 blk_t *ret_new_desc_blk, 884 int *ret_meta_bg); 885extern void ext2fs_update_dynamic_rev(ext2_filsys fs); 886 887/* csum.c */ 888extern void ext2fs_group_desc_csum_set(ext2_filsys fs, dgrp_t group); 889extern int ext2fs_group_desc_csum_verify(ext2_filsys fs, dgrp_t group); 890extern errcode_t ext2fs_set_gdt_csum(ext2_filsys fs); 891 892/* dblist.c */ 893 894extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs); 895extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist); 896extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ext2_ino_t ino, 897 blk_t blk, int blockcnt); 898extern errcode_t ext2fs_add_dir_block2(ext2_dblist dblist, ext2_ino_t ino, 899 blk64_t blk, e2_blkcnt_t blockcnt); 900extern void ext2fs_dblist_sort(ext2_dblist dblist, 901 EXT2_QSORT_TYPE (*sortfunc)(const void *, 902 const void *)); 903extern void ext2fs_dblist_sort2(ext2_dblist dblist, 904 EXT2_QSORT_TYPE (*sortfunc)(const void *, 905 const void *)); 906extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist, 907 int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info, 908 void *priv_data), 909 void *priv_data); 910extern errcode_t ext2fs_dblist_iterate2(ext2_dblist dblist, 911 int (*func)(ext2_filsys fs, struct ext2_db_entry2 *db_info, 912 void *priv_data), 913 void *priv_data); 914extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ext2_ino_t ino, 915 blk_t blk, int blockcnt); 916extern errcode_t ext2fs_set_dir_block2(ext2_dblist dblist, ext2_ino_t ino, 917 blk64_t blk, e2_blkcnt_t blockcnt); 918extern errcode_t ext2fs_copy_dblist(ext2_dblist src, 919 ext2_dblist *dest); 920extern int ext2fs_dblist_count(ext2_dblist dblist); 921extern blk64_t ext2fs_dblist_count2(ext2_dblist dblist); 922extern errcode_t ext2fs_dblist_get_last(ext2_dblist dblist, 923 struct ext2_db_entry **entry); 924extern errcode_t ext2fs_dblist_get_last2(ext2_dblist dblist, 925 struct ext2_db_entry2 **entry); 926extern errcode_t ext2fs_dblist_drop_last(ext2_dblist dblist); 927 928/* dblist_dir.c */ 929extern errcode_t 930 ext2fs_dblist_dir_iterate(ext2_dblist dblist, 931 int flags, 932 char *block_buf, 933 int (*func)(ext2_ino_t dir, 934 int entry, 935 struct ext2_dir_entry *dirent, 936 int offset, 937 int blocksize, 938 char *buf, 939 void *priv_data), 940 void *priv_data); 941 942/* dirblock.c */ 943extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block, 944 void *buf); 945extern errcode_t ext2fs_read_dir_block2(ext2_filsys fs, blk_t block, 946 void *buf, int flags); 947extern errcode_t ext2fs_read_dir_block3(ext2_filsys fs, blk64_t block, 948 void *buf, int flags); 949extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block, 950 void *buf); 951extern errcode_t ext2fs_write_dir_block2(ext2_filsys fs, blk_t block, 952 void *buf, int flags); 953extern errcode_t ext2fs_write_dir_block3(ext2_filsys fs, blk64_t block, 954 void *buf, int flags); 955 956/* dirhash.c */ 957extern errcode_t ext2fs_dirhash(int version, const char *name, int len, 958 const __u32 *seed, 959 ext2_dirhash_t *ret_hash, 960 ext2_dirhash_t *ret_minor_hash); 961 962 963/* dir_iterate.c */ 964extern errcode_t ext2fs_get_rec_len(ext2_filsys fs, 965 struct ext2_dir_entry *dirent, 966 unsigned int *rec_len); 967extern errcode_t ext2fs_set_rec_len(ext2_filsys fs, 968 unsigned int len, 969 struct ext2_dir_entry *dirent); 970extern errcode_t ext2fs_dir_iterate(ext2_filsys fs, 971 ext2_ino_t dir, 972 int flags, 973 char *block_buf, 974 int (*func)(struct ext2_dir_entry *dirent, 975 int offset, 976 int blocksize, 977 char *buf, 978 void *priv_data), 979 void *priv_data); 980extern errcode_t ext2fs_dir_iterate2(ext2_filsys fs, 981 ext2_ino_t dir, 982 int flags, 983 char *block_buf, 984 int (*func)(ext2_ino_t dir, 985 int entry, 986 struct ext2_dir_entry *dirent, 987 int offset, 988 int blocksize, 989 char *buf, 990 void *priv_data), 991 void *priv_data); 992 993/* dupfs.c */ 994extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest); 995 996/* expanddir.c */ 997extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir); 998 999/* ext_attr.c */ 1000extern __u32 ext2fs_ext_attr_hash_entry(struct ext2_ext_attr_entry *entry, 1001 void *data); 1002extern errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf); 1003extern errcode_t ext2fs_read_ext_attr2(ext2_filsys fs, blk64_t block, 1004 void *buf); 1005extern errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block, 1006 void *buf); 1007extern errcode_t ext2fs_write_ext_attr2(ext2_filsys fs, blk64_t block, 1008 void *buf); 1009extern errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk, 1010 char *block_buf, 1011 int adjust, __u32 *newcount); 1012extern errcode_t ext2fs_adjust_ea_refcount2(ext2_filsys fs, blk64_t blk, 1013 char *block_buf, 1014 int adjust, __u32 *newcount); 1015 1016/* extent.c */ 1017extern errcode_t ext2fs_extent_header_verify(void *ptr, int size); 1018extern errcode_t ext2fs_extent_open(ext2_filsys fs, ext2_ino_t ino, 1019 ext2_extent_handle_t *handle); 1020extern errcode_t ext2fs_extent_open2(ext2_filsys fs, ext2_ino_t ino, 1021 struct ext2_inode *inode, 1022 ext2_extent_handle_t *ret_handle); 1023extern void ext2fs_extent_free(ext2_extent_handle_t handle); 1024extern errcode_t ext2fs_extent_get(ext2_extent_handle_t handle, 1025 int flags, struct ext2fs_extent *extent); 1026extern errcode_t ext2fs_extent_replace(ext2_extent_handle_t handle, int flags, 1027 struct ext2fs_extent *extent); 1028extern errcode_t ext2fs_extent_insert(ext2_extent_handle_t handle, int flags, 1029 struct ext2fs_extent *extent); 1030extern errcode_t ext2fs_extent_set_bmap(ext2_extent_handle_t handle, 1031 blk64_t logical, blk64_t physical, 1032 int flags); 1033extern errcode_t ext2fs_extent_delete(ext2_extent_handle_t handle, int flags); 1034extern errcode_t ext2fs_extent_get_info(ext2_extent_handle_t handle, 1035 struct ext2_extent_info *info); 1036extern errcode_t ext2fs_extent_goto(ext2_extent_handle_t handle, 1037 blk64_t blk); 1038 1039/* fileio.c */ 1040extern errcode_t ext2fs_file_open2(ext2_filsys fs, ext2_ino_t ino, 1041 struct ext2_inode *inode, 1042 int flags, ext2_file_t *ret); 1043extern errcode_t ext2fs_file_open(ext2_filsys fs, ext2_ino_t ino, 1044 int flags, ext2_file_t *ret); 1045extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file); 1046struct ext2_inode *ext2fs_file_get_inode(ext2_file_t file); 1047extern errcode_t ext2fs_file_close(ext2_file_t file); 1048extern errcode_t ext2fs_file_flush(ext2_file_t file); 1049extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf, 1050 unsigned int wanted, unsigned int *got); 1051extern errcode_t ext2fs_file_write(ext2_file_t file, const void *buf, 1052 unsigned int nbytes, unsigned int *written); 1053extern errcode_t ext2fs_file_llseek(ext2_file_t file, __u64 offset, 1054 int whence, __u64 *ret_pos); 1055extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset, 1056 int whence, ext2_off_t *ret_pos); 1057errcode_t ext2fs_file_get_lsize(ext2_file_t file, __u64 *ret_size); 1058extern ext2_off_t ext2fs_file_get_size(ext2_file_t file); 1059extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size); 1060extern errcode_t ext2fs_file_set_size2(ext2_file_t file, ext2_off64_t size); 1061 1062/* finddev.c */ 1063extern char *ext2fs_find_block_device(dev_t device); 1064 1065/* flushb.c */ 1066extern errcode_t ext2fs_sync_device(int fd, int flushb); 1067 1068/* freefs.c */ 1069extern void ext2fs_free(ext2_filsys fs); 1070extern void ext2fs_free_dblist(ext2_dblist dblist); 1071extern void ext2fs_badblocks_list_free(ext2_badblocks_list bb); 1072extern void ext2fs_u32_list_free(ext2_u32_list bb); 1073 1074/* gen_bitmap.c */ 1075extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap); 1076extern errcode_t ext2fs_make_generic_bitmap(errcode_t magic, ext2_filsys fs, 1077 __u32 start, __u32 end, 1078 __u32 real_end, 1079 const char *descr, char *init_map, 1080 ext2fs_generic_bitmap *ret); 1081extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start, 1082 __u32 end, 1083 __u32 real_end, 1084 const char *descr, 1085 ext2fs_generic_bitmap *ret); 1086extern errcode_t ext2fs_copy_generic_bitmap(ext2fs_generic_bitmap src, 1087 ext2fs_generic_bitmap *dest); 1088extern void ext2fs_clear_generic_bitmap(ext2fs_generic_bitmap bitmap); 1089extern errcode_t ext2fs_fudge_generic_bitmap_end(ext2fs_inode_bitmap bitmap, 1090 errcode_t magic, 1091 errcode_t neq, 1092 ext2_ino_t end, 1093 ext2_ino_t *oend); 1094extern void ext2fs_set_generic_bitmap_padding(ext2fs_generic_bitmap map); 1095extern errcode_t ext2fs_resize_generic_bitmap(errcode_t magic, 1096 __u32 new_end, 1097 __u32 new_real_end, 1098 ext2fs_generic_bitmap bmap); 1099extern errcode_t ext2fs_compare_generic_bitmap(errcode_t magic, errcode_t neq, 1100 ext2fs_generic_bitmap bm1, 1101 ext2fs_generic_bitmap bm2); 1102extern errcode_t ext2fs_get_generic_bitmap_range(ext2fs_generic_bitmap bmap, 1103 errcode_t magic, 1104 __u32 start, __u32 num, 1105 void *out); 1106extern errcode_t ext2fs_set_generic_bitmap_range(ext2fs_generic_bitmap bmap, 1107 errcode_t magic, 1108 __u32 start, __u32 num, 1109 void *in); 1110 1111/* gen_bitmap64.c */ 1112void ext2fs_free_generic_bmap(ext2fs_generic_bitmap bmap); 1113errcode_t ext2fs_alloc_generic_bmap(ext2_filsys fs, errcode_t magic, 1114 int type, __u64 start, __u64 end, 1115 __u64 real_end, 1116 const char *descr, 1117 ext2fs_generic_bitmap *ret); 1118errcode_t ext2fs_copy_generic_bmap(ext2fs_generic_bitmap src, 1119 ext2fs_generic_bitmap *dest); 1120void ext2fs_clear_generic_bmap(ext2fs_generic_bitmap bitmap); 1121errcode_t ext2fs_fudge_generic_bmap_end(ext2fs_generic_bitmap bitmap, 1122 errcode_t neq, 1123 __u64 end, __u64 *oend); 1124void ext2fs_set_generic_bmap_padding(ext2fs_generic_bitmap bmap); 1125errcode_t ext2fs_resize_generic_bmap(ext2fs_generic_bitmap bmap, 1126 __u64 new_end, 1127 __u64 new_real_end); 1128errcode_t ext2fs_compare_generic_bmap(errcode_t neq, 1129 ext2fs_generic_bitmap bm1, 1130 ext2fs_generic_bitmap bm2); 1131errcode_t ext2fs_get_generic_bmap_range(ext2fs_generic_bitmap bmap, 1132 __u64 start, unsigned int num, 1133 void *out); 1134errcode_t ext2fs_set_generic_bmap_range(ext2fs_generic_bitmap bmap, 1135 __u64 start, unsigned int num, 1136 void *in); 1137errcode_t ext2fs_convert_subcluster_bitmap(ext2_filsys fs, 1138 ext2fs_block_bitmap *bitmap); 1139 1140/* getsize.c */ 1141extern errcode_t ext2fs_get_device_size(const char *file, int blocksize, 1142 blk_t *retblocks); 1143extern errcode_t ext2fs_get_device_size2(const char *file, int blocksize, 1144 blk64_t *retblocks); 1145 1146/* getsectsize.c */ 1147errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize); 1148errcode_t ext2fs_get_device_phys_sectsize(const char *file, int *sectsize); 1149 1150/* i_block.c */ 1151errcode_t ext2fs_iblk_add_blocks(ext2_filsys fs, struct ext2_inode *inode, 1152 blk64_t num_blocks); 1153errcode_t ext2fs_iblk_sub_blocks(ext2_filsys fs, struct ext2_inode *inode, 1154 blk64_t num_blocks); 1155errcode_t ext2fs_iblk_set(ext2_filsys fs, struct ext2_inode *inode, blk64_t b); 1156 1157/* imager.c */ 1158extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags); 1159extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags); 1160extern errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd, int flags); 1161extern errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd, int flags); 1162extern errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags); 1163extern errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags); 1164 1165/* ind_block.c */ 1166errcode_t ext2fs_read_ind_block(ext2_filsys fs, blk_t blk, void *buf); 1167errcode_t ext2fs_write_ind_block(ext2_filsys fs, blk_t blk, void *buf); 1168 1169/* initialize.c */ 1170extern errcode_t ext2fs_initialize(const char *name, int flags, 1171 struct ext2_super_block *param, 1172 io_manager manager, ext2_filsys *ret_fs); 1173 1174/* icount.c */ 1175extern void ext2fs_free_icount(ext2_icount_t icount); 1176extern errcode_t ext2fs_create_icount_tdb(ext2_filsys fs, char *tdb_dir, 1177 int flags, ext2_icount_t *ret); 1178extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags, 1179 unsigned int size, 1180 ext2_icount_t hint, ext2_icount_t *ret); 1181extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags, 1182 unsigned int size, 1183 ext2_icount_t *ret); 1184extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ext2_ino_t ino, 1185 __u16 *ret); 1186extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ext2_ino_t ino, 1187 __u16 *ret); 1188extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ext2_ino_t ino, 1189 __u16 *ret); 1190extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ext2_ino_t ino, 1191 __u16 count); 1192extern ext2_ino_t ext2fs_get_icount_size(ext2_icount_t icount); 1193errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *); 1194 1195/* inode.c */ 1196extern errcode_t ext2fs_flush_icache(ext2_filsys fs); 1197extern errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan, 1198 ext2_ino_t *ino, 1199 struct ext2_inode *inode, 1200 int bufsize); 1201extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks, 1202 ext2_inode_scan *ret_scan); 1203extern void ext2fs_close_inode_scan(ext2_inode_scan scan); 1204extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino, 1205 struct ext2_inode *inode); 1206extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan, 1207 int group); 1208extern void ext2fs_set_inode_callback 1209 (ext2_inode_scan scan, 1210 errcode_t (*done_group)(ext2_filsys fs, 1211 ext2_inode_scan scan, 1212 dgrp_t group, 1213 void * priv_data), 1214 void *done_group_data); 1215extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags, 1216 int clear_flags); 1217extern errcode_t ext2fs_read_inode_full(ext2_filsys fs, ext2_ino_t ino, 1218 struct ext2_inode * inode, 1219 int bufsize); 1220extern errcode_t ext2fs_read_inode (ext2_filsys fs, ext2_ino_t ino, 1221 struct ext2_inode * inode); 1222extern errcode_t ext2fs_write_inode_full(ext2_filsys fs, ext2_ino_t ino, 1223 struct ext2_inode * inode, 1224 int bufsize); 1225extern errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino, 1226 struct ext2_inode * inode); 1227extern errcode_t ext2fs_write_new_inode(ext2_filsys fs, ext2_ino_t ino, 1228 struct ext2_inode * inode); 1229extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); 1230extern errcode_t ext2fs_check_directory(ext2_filsys fs, ext2_ino_t ino); 1231 1232/* inode_io.c */ 1233extern io_manager inode_io_manager; 1234extern errcode_t ext2fs_inode_io_intern(ext2_filsys fs, ext2_ino_t ino, 1235 char **name); 1236extern errcode_t ext2fs_inode_io_intern2(ext2_filsys fs, ext2_ino_t ino, 1237 struct ext2_inode *inode, 1238 char **name); 1239 1240/* ismounted.c */ 1241extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags); 1242extern errcode_t ext2fs_check_mount_point(const char *device, int *mount_flags, 1243 char *mtpt, int mtlen); 1244 1245/* punch.c */ 1246extern errcode_t ext2fs_punch(ext2_filsys fs, ext2_ino_t ino, 1247 struct ext2_inode *inode, 1248 char *block_buf, blk64_t start, 1249 blk64_t end); 1250 1251/* namei.c */ 1252extern errcode_t ext2fs_lookup(ext2_filsys fs, ext2_ino_t dir, const char *name, 1253 int namelen, char *buf, ext2_ino_t *inode); 1254extern errcode_t ext2fs_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1255 const char *name, ext2_ino_t *inode); 1256errcode_t ext2fs_namei_follow(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1257 const char *name, ext2_ino_t *inode); 1258extern errcode_t ext2fs_follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1259 ext2_ino_t inode, ext2_ino_t *res_inode); 1260 1261/* native.c */ 1262int ext2fs_native_flag(void); 1263 1264/* newdir.c */ 1265extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino, 1266 ext2_ino_t parent_ino, char **block); 1267 1268/* mkdir.c */ 1269extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum, 1270 const char *name); 1271 1272/* mkjournal.c */ 1273extern errcode_t ext2fs_zero_blocks(ext2_filsys fs, blk_t blk, int num, 1274 blk_t *ret_blk, int *ret_count); 1275extern errcode_t ext2fs_zero_blocks2(ext2_filsys fs, blk64_t blk, int num, 1276 blk64_t *ret_blk, int *ret_count); 1277extern errcode_t ext2fs_create_journal_superblock(ext2_filsys fs, 1278 __u32 num_blocks, int flags, 1279 char **ret_jsb); 1280extern errcode_t ext2fs_add_journal_device(ext2_filsys fs, 1281 ext2_filsys journal_dev); 1282extern errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t num_blocks, 1283 int flags); 1284extern int ext2fs_default_journal_size(__u64 num_blocks); 1285 1286/* openfs.c */ 1287extern errcode_t ext2fs_open(const char *name, int flags, int superblock, 1288 unsigned int block_size, io_manager manager, 1289 ext2_filsys *ret_fs); 1290extern errcode_t ext2fs_open2(const char *name, const char *io_options, 1291 int flags, int superblock, 1292 unsigned int block_size, io_manager manager, 1293 ext2_filsys *ret_fs); 1294extern blk64_t ext2fs_descriptor_block_loc2(ext2_filsys fs, 1295 blk64_t group_block, dgrp_t i); 1296extern blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block, 1297 dgrp_t i); 1298errcode_t ext2fs_get_data_io(ext2_filsys fs, io_channel *old_io); 1299errcode_t ext2fs_set_data_io(ext2_filsys fs, io_channel new_io); 1300errcode_t ext2fs_rewrite_to_io(ext2_filsys fs, io_channel new_io); 1301 1302/* get_pathname.c */ 1303extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino, 1304 char **name); 1305 1306/* link.c */ 1307errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name, 1308 ext2_ino_t ino, int flags); 1309errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir, const char *name, 1310 ext2_ino_t ino, int flags); 1311 1312/* read_bb.c */ 1313extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs, 1314 ext2_badblocks_list *bb_list); 1315 1316/* read_bb_file.c */ 1317extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f, 1318 ext2_badblocks_list *bb_list, 1319 void *priv_data, 1320 void (*invalid)(ext2_filsys fs, 1321 blk_t blk, 1322 char *badstr, 1323 void *priv_data)); 1324extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f, 1325 ext2_badblocks_list *bb_list, 1326 void (*invalid)(ext2_filsys fs, 1327 blk_t blk)); 1328 1329/* res_gdt.c */ 1330extern errcode_t ext2fs_create_resize_inode(ext2_filsys fs); 1331 1332/* swapfs.c */ 1333extern void ext2fs_swap_ext_attr(char *to, char *from, int bufsize, 1334 int has_header); 1335extern void ext2fs_swap_ext_attr_header(struct ext2_ext_attr_header *to_header, 1336 struct ext2_ext_attr_header *from_hdr); 1337extern void ext2fs_swap_ext_attr_entry(struct ext2_ext_attr_entry *to_entry, 1338 struct ext2_ext_attr_entry *from_entry); 1339extern void ext2fs_swap_super(struct ext2_super_block * super); 1340extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp); 1341extern void ext2fs_swap_group_desc2(ext2_filsys, struct ext2_group_desc *gdp); 1342extern void ext2fs_swap_inode_full(ext2_filsys fs, struct ext2_inode_large *t, 1343 struct ext2_inode_large *f, int hostorder, 1344 int bufsize); 1345extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t, 1346 struct ext2_inode *f, int hostorder); 1347 1348/* valid_blk.c */ 1349extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode); 1350 1351/* version.c */ 1352extern int ext2fs_parse_version_string(const char *ver_string); 1353extern int ext2fs_get_library_version(const char **ver_string, 1354 const char **date_string); 1355 1356/* write_bb_file.c */ 1357extern errcode_t ext2fs_write_bb_FILE(ext2_badblocks_list bb_list, 1358 unsigned int flags, 1359 FILE *f); 1360 1361 1362/* inline functions */ 1363extern errcode_t ext2fs_get_mem(unsigned long size, void *ptr); 1364extern errcode_t ext2fs_get_memalign(unsigned long size, 1365 unsigned long align, void *ptr); 1366extern errcode_t ext2fs_free_mem(void *ptr); 1367extern errcode_t ext2fs_resize_mem(unsigned long old_size, 1368 unsigned long size, void *ptr); 1369extern void ext2fs_mark_super_dirty(ext2_filsys fs); 1370extern void ext2fs_mark_changed(ext2_filsys fs); 1371extern int ext2fs_test_changed(ext2_filsys fs); 1372extern void ext2fs_mark_valid(ext2_filsys fs); 1373extern void ext2fs_unmark_valid(ext2_filsys fs); 1374extern int ext2fs_test_valid(ext2_filsys fs); 1375extern void ext2fs_mark_ib_dirty(ext2_filsys fs); 1376extern void ext2fs_mark_bb_dirty(ext2_filsys fs); 1377extern int ext2fs_test_ib_dirty(ext2_filsys fs); 1378extern int ext2fs_test_bb_dirty(ext2_filsys fs); 1379extern int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk); 1380extern int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino); 1381extern blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group); 1382extern blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group); 1383extern blk_t ext2fs_inode_data_blocks(ext2_filsys fs, 1384 struct ext2_inode *inode); 1385extern unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b); 1386extern __u64 ext2fs_div64_ceil(__u64 a, __u64 b); 1387 1388/* 1389 * The actual inlined functions definitions themselves... 1390 * 1391 * If NO_INLINE_FUNCS is defined, then we won't try to do inline 1392 * functions at all! 1393 */ 1394#if (defined(INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS)) 1395#ifdef INCLUDE_INLINE_FUNCS 1396#define _INLINE_ extern 1397#else 1398#ifdef __GNUC__ 1399#define _INLINE_ extern __inline__ 1400#else /* For Watcom C */ 1401#define _INLINE_ extern inline 1402#endif 1403#endif 1404 1405#ifndef EXT2_CUSTOM_MEMORY_ROUTINES 1406#include <string.h> 1407/* 1408 * Allocate memory 1409 */ 1410_INLINE_ errcode_t ext2fs_get_mem(unsigned long size, void *ptr) 1411{ 1412 void *pp; 1413 1414 pp = malloc(size); 1415 if (!pp) 1416 return EXT2_ET_NO_MEMORY; 1417 memcpy(ptr, &pp, sizeof (pp)); 1418 return 0; 1419} 1420 1421_INLINE_ errcode_t ext2fs_get_memalign(unsigned long size, 1422 unsigned long align, void *ptr) 1423{ 1424 errcode_t retval; 1425 1426 if (align == 0) 1427 align = 8; 1428 retval = posix_memalign((void **) ptr, align, size); 1429 if (retval) { 1430 if (retval == ENOMEM) 1431 return EXT2_ET_NO_MEMORY; 1432 return retval; 1433 } 1434 return 0; 1435} 1436 1437_INLINE_ errcode_t ext2fs_get_memzero(unsigned long size, void *ptr) 1438{ 1439 void *pp; 1440 1441 pp = malloc(size); 1442 if (!pp) 1443 return EXT2_ET_NO_MEMORY; 1444 memset(pp, 0, size); 1445 memcpy(ptr, &pp, sizeof(pp)); 1446 return 0; 1447} 1448 1449_INLINE_ errcode_t ext2fs_get_array(unsigned long count, unsigned long size, void *ptr) 1450{ 1451 if (count && (-1UL)/count<size) 1452 return EXT2_ET_NO_MEMORY; 1453 return ext2fs_get_mem(count*size, ptr); 1454} 1455 1456_INLINE_ errcode_t ext2fs_get_arrayzero(unsigned long count, 1457 unsigned long size, void *ptr) 1458{ 1459 void *pp; 1460 1461 if (count && (-1UL)/count<size) 1462 return EXT2_ET_NO_MEMORY; 1463 pp = calloc(count, size); 1464 if (!pp) 1465 return EXT2_ET_NO_MEMORY; 1466 memcpy(ptr, &pp, sizeof(pp)); 1467 return 0; 1468} 1469 1470/* 1471 * Free memory 1472 */ 1473_INLINE_ errcode_t ext2fs_free_mem(void *ptr) 1474{ 1475 void *p; 1476 1477 memcpy(&p, ptr, sizeof(p)); 1478 free(p); 1479 p = 0; 1480 memcpy(ptr, &p, sizeof(p)); 1481 return 0; 1482} 1483 1484/* 1485 * Resize memory 1486 */ 1487_INLINE_ errcode_t ext2fs_resize_mem(unsigned long EXT2FS_ATTR((unused)) old_size, 1488 unsigned long size, void *ptr) 1489{ 1490 void *p; 1491 1492 /* Use "memcpy" for pointer assignments here to avoid problems 1493 * with C99 strict type aliasing rules. */ 1494 memcpy(&p, ptr, sizeof(p)); 1495 p = realloc(p, size); 1496 if (!p) 1497 return EXT2_ET_NO_MEMORY; 1498 memcpy(ptr, &p, sizeof(p)); 1499 return 0; 1500} 1501#endif /* Custom memory routines */ 1502 1503/* 1504 * Mark a filesystem superblock as dirty 1505 */ 1506_INLINE_ void ext2fs_mark_super_dirty(ext2_filsys fs) 1507{ 1508 fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_CHANGED; 1509} 1510 1511/* 1512 * Mark a filesystem as changed 1513 */ 1514_INLINE_ void ext2fs_mark_changed(ext2_filsys fs) 1515{ 1516 fs->flags |= EXT2_FLAG_CHANGED; 1517} 1518 1519/* 1520 * Check to see if a filesystem has changed 1521 */ 1522_INLINE_ int ext2fs_test_changed(ext2_filsys fs) 1523{ 1524 return (fs->flags & EXT2_FLAG_CHANGED); 1525} 1526 1527/* 1528 * Mark a filesystem as valid 1529 */ 1530_INLINE_ void ext2fs_mark_valid(ext2_filsys fs) 1531{ 1532 fs->flags |= EXT2_FLAG_VALID; 1533} 1534 1535/* 1536 * Mark a filesystem as NOT valid 1537 */ 1538_INLINE_ void ext2fs_unmark_valid(ext2_filsys fs) 1539{ 1540 fs->flags &= ~EXT2_FLAG_VALID; 1541} 1542 1543/* 1544 * Check to see if a filesystem is valid 1545 */ 1546_INLINE_ int ext2fs_test_valid(ext2_filsys fs) 1547{ 1548 return (fs->flags & EXT2_FLAG_VALID); 1549} 1550 1551/* 1552 * Mark the inode bitmap as dirty 1553 */ 1554_INLINE_ void ext2fs_mark_ib_dirty(ext2_filsys fs) 1555{ 1556 fs->flags |= EXT2_FLAG_IB_DIRTY | EXT2_FLAG_CHANGED; 1557} 1558 1559/* 1560 * Mark the block bitmap as dirty 1561 */ 1562_INLINE_ void ext2fs_mark_bb_dirty(ext2_filsys fs) 1563{ 1564 fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_CHANGED; 1565} 1566 1567/* 1568 * Check to see if a filesystem's inode bitmap is dirty 1569 */ 1570_INLINE_ int ext2fs_test_ib_dirty(ext2_filsys fs) 1571{ 1572 return (fs->flags & EXT2_FLAG_IB_DIRTY); 1573} 1574 1575/* 1576 * Check to see if a filesystem's block bitmap is dirty 1577 */ 1578_INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs) 1579{ 1580 return (fs->flags & EXT2_FLAG_BB_DIRTY); 1581} 1582 1583/* 1584 * Return the group # of a block 1585 */ 1586_INLINE_ int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk) 1587{ 1588 return ext2fs_group_of_blk2(fs, blk); 1589} 1590/* 1591 * Return the group # of an inode number 1592 */ 1593_INLINE_ int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino) 1594{ 1595 return (ino - 1) / fs->super->s_inodes_per_group; 1596} 1597 1598/* 1599 * Return the first block (inclusive) in a group 1600 */ 1601_INLINE_ blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group) 1602{ 1603 return ext2fs_group_first_block2(fs, group); 1604} 1605 1606/* 1607 * Return the last block (inclusive) in a group 1608 */ 1609_INLINE_ blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group) 1610{ 1611 return ext2fs_group_last_block2(fs, group); 1612} 1613 1614_INLINE_ blk_t ext2fs_inode_data_blocks(ext2_filsys fs, 1615 struct ext2_inode *inode) 1616{ 1617 return ext2fs_inode_data_blocks2(fs, inode); 1618} 1619 1620/* 1621 * This is an efficient, overflow safe way of calculating ceil((1.0 * a) / b) 1622 */ 1623_INLINE_ unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b) 1624{ 1625 if (!a) 1626 return 0; 1627 return ((a - 1) / b) + 1; 1628} 1629 1630_INLINE_ __u64 ext2fs_div64_ceil(__u64 a, __u64 b) 1631{ 1632 if (!a) 1633 return 0; 1634 return ((a - 1) / b) + 1; 1635} 1636 1637#undef _INLINE_ 1638#endif 1639 1640#ifdef __cplusplus 1641} 1642#endif 1643 1644#endif /* _EXT2FS_EXT2FS_H */ 1645