ext2fs.h revision e43bb12f402c7de72113a24701fcd17024e1f25c
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#include <sys/types.h> 61#include <sys/stat.h> 62#include <fcntl.h> 63 64#ifndef __USE_XOPEN2K 65/* If the "#define _XOPEN_SOURCE 600" didn't succeed in declaring 66 * posix_memalign(), maybe due to <features.h> or <stdlib.h> included beforej 67 * _XOPEN_SOURCE, declare it here to avoid compiler warnings. */ 68extern int posix_memalign(void **__memptr, size_t __alignment, size_t __size); 69#endif 70 71#if EXT2_FLAT_INCLUDES 72#include "e2_types.h" 73#include "ext2_fs.h" 74#include "ext3_extents.h" 75#else 76#include <ext2fs/ext2_types.h> 77#include <ext2fs/ext2_fs.h> 78#include <ext2fs/ext3_extents.h> 79#endif /* EXT2_FLAT_INCLUDES */ 80 81typedef __u32 ext2_ino_t; 82typedef __u32 blk_t; 83typedef __u64 blk64_t; 84typedef __u32 dgrp_t; 85typedef __u32 ext2_off_t; 86typedef __u64 ext2_off64_t; 87typedef __s64 e2_blkcnt_t; 88typedef __u32 ext2_dirhash_t; 89 90#if EXT2_FLAT_INCLUDES 91#include "com_err.h" 92#include "ext2_io.h" 93#include "ext2_err.h" 94#include "ext2_ext_attr.h" 95#else 96#include <et/com_err.h> 97#include <ext2fs/ext2_io.h> 98#include <ext2fs/ext2_err.h> 99#include <ext2fs/ext2_ext_attr.h> 100#endif 101 102/* 103 * Portability help for Microsoft Visual C++ 104 */ 105#ifdef _MSC_VER 106#define EXT2_QSORT_TYPE int __cdecl 107#else 108#define EXT2_QSORT_TYPE int 109#endif 110 111typedef struct struct_ext2_filsys *ext2_filsys; 112 113#define EXT2FS_MARK_ERROR 0 114#define EXT2FS_UNMARK_ERROR 1 115#define EXT2FS_TEST_ERROR 2 116 117typedef struct ext2fs_struct_generic_bitmap *ext2fs_generic_bitmap; 118typedef struct ext2fs_struct_generic_bitmap *ext2fs_inode_bitmap; 119typedef struct ext2fs_struct_generic_bitmap *ext2fs_block_bitmap; 120 121#define EXT2_FIRST_INODE(s) EXT2_FIRST_INO(s) 122 123 124/* 125 * Badblocks list definitions 126 */ 127 128typedef struct ext2_struct_u32_list *ext2_badblocks_list; 129typedef struct ext2_struct_u32_iterate *ext2_badblocks_iterate; 130 131typedef struct ext2_struct_u32_list *ext2_u32_list; 132typedef struct ext2_struct_u32_iterate *ext2_u32_iterate; 133 134/* old */ 135typedef struct ext2_struct_u32_list *badblocks_list; 136typedef struct ext2_struct_u32_iterate *badblocks_iterate; 137 138#define BADBLOCKS_FLAG_DIRTY 1 139 140/* 141 * ext2_dblist structure and abstractions (see dblist.c) 142 */ 143struct ext2_db_entry2 { 144 ext2_ino_t ino; 145 blk64_t blk; 146 e2_blkcnt_t blockcnt; 147}; 148 149/* Ye Olde 32-bit version */ 150struct ext2_db_entry { 151 ext2_ino_t ino; 152 blk_t blk; 153 int blockcnt; 154}; 155 156typedef struct ext2_struct_dblist *ext2_dblist; 157 158#define DBLIST_ABORT 1 159 160/* 161 * ext2_fileio definitions 162 */ 163 164#define EXT2_FILE_WRITE 0x0001 165#define EXT2_FILE_CREATE 0x0002 166 167#define EXT2_FILE_MASK 0x00FF 168 169#define EXT2_FILE_BUF_DIRTY 0x4000 170#define EXT2_FILE_BUF_VALID 0x2000 171 172typedef struct ext2_file *ext2_file_t; 173 174#define EXT2_SEEK_SET 0 175#define EXT2_SEEK_CUR 1 176#define EXT2_SEEK_END 2 177 178/* 179 * Flags for the ext2_filsys structure and for ext2fs_open() 180 */ 181#define EXT2_FLAG_RW 0x01 182#define EXT2_FLAG_CHANGED 0x02 183#define EXT2_FLAG_DIRTY 0x04 184#define EXT2_FLAG_VALID 0x08 185#define EXT2_FLAG_IB_DIRTY 0x10 186#define EXT2_FLAG_BB_DIRTY 0x20 187#define EXT2_FLAG_SWAP_BYTES 0x40 188#define EXT2_FLAG_SWAP_BYTES_READ 0x80 189#define EXT2_FLAG_SWAP_BYTES_WRITE 0x100 190#define EXT2_FLAG_MASTER_SB_ONLY 0x200 191#define EXT2_FLAG_FORCE 0x400 192#define EXT2_FLAG_SUPER_ONLY 0x800 193#define EXT2_FLAG_JOURNAL_DEV_OK 0x1000 194#define EXT2_FLAG_IMAGE_FILE 0x2000 195#define EXT2_FLAG_EXCLUSIVE 0x4000 196#define EXT2_FLAG_SOFTSUPP_FEATURES 0x8000 197#define EXT2_FLAG_NOFREE_ON_ERROR 0x10000 198#define EXT2_FLAG_64BITS 0x20000 199#define EXT2_FLAG_PRINT_PROGRESS 0x40000 200#define EXT2_FLAG_DIRECT_IO 0x80000 201#define EXT2_FLAG_SKIP_MMP 0x100000 202 203/* 204 * Special flag in the ext2 inode i_flag field that means that this is 205 * a new inode. (So that ext2_write_inode() can clear extra fields.) 206 */ 207#define EXT2_NEW_INODE_FL 0x80000000 208 209/* 210 * Flags for mkjournal 211 */ 212#define EXT2_MKJOURNAL_V1_SUPER 0x0000001 /* create V1 superblock (deprecated) */ 213#define EXT2_MKJOURNAL_LAZYINIT 0x0000002 /* don't zero journal inode before use*/ 214 215struct opaque_ext2_group_desc; 216 217struct struct_ext2_filsys { 218 errcode_t magic; 219 io_channel io; 220 int flags; 221 char * device_name; 222 struct ext2_super_block * super; 223 unsigned int blocksize; 224 int fragsize; 225 dgrp_t group_desc_count; 226 unsigned long desc_blocks; 227 struct opaque_ext2_group_desc * group_desc; 228 unsigned int inode_blocks_per_group; 229 ext2fs_inode_bitmap inode_map; 230 ext2fs_block_bitmap block_map; 231 /* XXX FIXME-64: not 64-bit safe, but not used? */ 232 errcode_t (*get_blocks)(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); 233 errcode_t (*check_directory)(ext2_filsys fs, ext2_ino_t ino); 234 errcode_t (*write_bitmaps)(ext2_filsys fs); 235 errcode_t (*read_inode)(ext2_filsys fs, ext2_ino_t ino, 236 struct ext2_inode *inode); 237 errcode_t (*write_inode)(ext2_filsys fs, ext2_ino_t ino, 238 struct ext2_inode *inode); 239 ext2_badblocks_list badblocks; 240 ext2_dblist dblist; 241 __u32 stride; /* for mke2fs */ 242 struct ext2_super_block * orig_super; 243 struct ext2_image_hdr * image_header; 244 __u32 umask; 245 time_t now; 246 int cluster_ratio_bits; 247 /* 248 * Reserved for future expansion 249 */ 250 __u32 reserved[6]; 251 252 /* 253 * Reserved for the use of the calling application. 254 */ 255 void * priv_data; 256 257 /* 258 * Inode cache 259 */ 260 struct ext2_inode_cache *icache; 261 io_channel image_io; 262 263 /* 264 * Buffers for Multiple mount protection(MMP) block. 265 */ 266 void *mmp_buf; 267 void *mmp_cmp; 268 int mmp_fd; 269 270 /* 271 * Time at which e2fsck last updated the MMP block. 272 */ 273 long mmp_last_written; 274 275 /* 276 * More callback functions 277 */ 278 errcode_t (*get_alloc_block)(ext2_filsys fs, blk64_t goal, 279 blk64_t *ret); 280 void (*block_alloc_stats)(ext2_filsys fs, blk64_t blk, int inuse); 281}; 282 283#if EXT2_FLAT_INCLUDES 284#include "e2_bitops.h" 285#else 286#include <ext2fs/bitops.h> 287#endif 288 289/* 290 * Return flags for the block iterator functions 291 */ 292#define BLOCK_CHANGED 1 293#define BLOCK_ABORT 2 294#define BLOCK_ERROR 4 295 296/* 297 * Block interate flags 298 * 299 * BLOCK_FLAG_APPEND, or BLOCK_FLAG_HOLE, indicates that the interator 300 * function should be called on blocks where the block number is zero. 301 * This is used by ext2fs_expand_dir() to be able to add a new block 302 * to an inode. It can also be used for programs that want to be able 303 * to deal with files that contain "holes". 304 * 305 * BLOCK_FLAG_DEPTH_TRAVERSE indicates that the iterator function for 306 * the indirect, doubly indirect, etc. blocks should be called after 307 * all of the blocks containined in the indirect blocks are processed. 308 * This is useful if you are going to be deallocating blocks from an 309 * inode. 310 * 311 * BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be 312 * called for data blocks only. 313 * 314 * BLOCK_FLAG_READ_ONLY is a promise by the caller that it will not 315 * modify returned block number. 316 * 317 * BLOCK_FLAG_NO_LARGE is for internal use only. It informs 318 * ext2fs_block_iterate2 that large files won't be accepted. 319 */ 320#define BLOCK_FLAG_APPEND 1 321#define BLOCK_FLAG_HOLE 1 322#define BLOCK_FLAG_DEPTH_TRAVERSE 2 323#define BLOCK_FLAG_DATA_ONLY 4 324#define BLOCK_FLAG_READ_ONLY 8 325 326#define BLOCK_FLAG_NO_LARGE 0x1000 327 328/* 329 * Magic "block count" return values for the block iterator function. 330 */ 331#define BLOCK_COUNT_IND (-1) 332#define BLOCK_COUNT_DIND (-2) 333#define BLOCK_COUNT_TIND (-3) 334#define BLOCK_COUNT_TRANSLATOR (-4) 335 336#if 0 337/* 338 * Flags for ext2fs_move_blocks 339 */ 340#define EXT2_BMOVE_GET_DBLIST 0x0001 341#define EXT2_BMOVE_DEBUG 0x0002 342#endif 343 344/* 345 * Generic (non-filesystem layout specific) extents structure 346 */ 347 348#define EXT2_EXTENT_FLAGS_LEAF 0x0001 349#define EXT2_EXTENT_FLAGS_UNINIT 0x0002 350#define EXT2_EXTENT_FLAGS_SECOND_VISIT 0x0004 351 352struct ext2fs_extent { 353 blk64_t e_pblk; /* first physical block */ 354 blk64_t e_lblk; /* first logical block extent covers */ 355 __u32 e_len; /* number of blocks covered by extent */ 356 __u32 e_flags; /* extent flags */ 357}; 358 359typedef struct ext2_extent_handle *ext2_extent_handle_t; 360typedef struct ext2_extent_path *ext2_extent_path_t; 361 362/* 363 * Flags used by ext2fs_extent_get() 364 */ 365#define EXT2_EXTENT_CURRENT 0x0000 366#define EXT2_EXTENT_MOVE_MASK 0x000F 367#define EXT2_EXTENT_ROOT 0x0001 368#define EXT2_EXTENT_LAST_LEAF 0x0002 369#define EXT2_EXTENT_FIRST_SIB 0x0003 370#define EXT2_EXTENT_LAST_SIB 0x0004 371#define EXT2_EXTENT_NEXT_SIB 0x0005 372#define EXT2_EXTENT_PREV_SIB 0x0006 373#define EXT2_EXTENT_NEXT_LEAF 0x0007 374#define EXT2_EXTENT_PREV_LEAF 0x0008 375#define EXT2_EXTENT_NEXT 0x0009 376#define EXT2_EXTENT_PREV 0x000A 377#define EXT2_EXTENT_UP 0x000B 378#define EXT2_EXTENT_DOWN 0x000C 379#define EXT2_EXTENT_DOWN_AND_LAST 0x000D 380 381/* 382 * Flags used by ext2fs_extent_insert() 383 */ 384#define EXT2_EXTENT_INSERT_AFTER 0x0001 /* insert after handle loc'n */ 385#define EXT2_EXTENT_INSERT_NOSPLIT 0x0002 /* insert may not cause split */ 386 387/* 388 * Flags used by ext2fs_extent_delete() 389 */ 390#define EXT2_EXTENT_DELETE_KEEP_EMPTY 0x001 /* keep node if last extnt gone */ 391 392/* 393 * Flags used by ext2fs_extent_set_bmap() 394 */ 395#define EXT2_EXTENT_SET_BMAP_UNINIT 0x0001 396 397/* 398 * Data structure returned by ext2fs_extent_get_info() 399 */ 400struct ext2_extent_info { 401 int curr_entry; 402 int curr_level; 403 int num_entries; 404 int max_entries; 405 int max_depth; 406 int bytes_avail; 407 blk64_t max_lblk; 408 blk64_t max_pblk; 409 __u32 max_len; 410 __u32 max_uninit_len; 411}; 412 413/* 414 * Flags for directory block reading and writing functions 415 */ 416#define EXT2_DIRBLOCK_V2_STRUCT 0x0001 417 418/* 419 * Return flags for the directory iterator functions 420 */ 421#define DIRENT_CHANGED 1 422#define DIRENT_ABORT 2 423#define DIRENT_ERROR 3 424 425/* 426 * Directory iterator flags 427 */ 428 429#define DIRENT_FLAG_INCLUDE_EMPTY 1 430#define DIRENT_FLAG_INCLUDE_REMOVED 2 431 432#define DIRENT_DOT_FILE 1 433#define DIRENT_DOT_DOT_FILE 2 434#define DIRENT_OTHER_FILE 3 435#define DIRENT_DELETED_FILE 4 436 437/* 438 * Inode scan definitions 439 */ 440typedef struct ext2_struct_inode_scan *ext2_inode_scan; 441 442/* 443 * ext2fs_scan flags 444 */ 445#define EXT2_SF_CHK_BADBLOCKS 0x0001 446#define EXT2_SF_BAD_INODE_BLK 0x0002 447#define EXT2_SF_BAD_EXTRA_BYTES 0x0004 448#define EXT2_SF_SKIP_MISSING_ITABLE 0x0008 449#define EXT2_SF_DO_LAZY 0x0010 450 451/* 452 * ext2fs_check_if_mounted flags 453 */ 454#define EXT2_MF_MOUNTED 1 455#define EXT2_MF_ISROOT 2 456#define EXT2_MF_READONLY 4 457#define EXT2_MF_SWAP 8 458#define EXT2_MF_BUSY 16 459 460/* 461 * Ext2/linux mode flags. We define them here so that we don't need 462 * to depend on the OS's sys/stat.h, since we may be compiling on a 463 * non-Linux system. 464 */ 465#define LINUX_S_IFMT 00170000 466#define LINUX_S_IFSOCK 0140000 467#define LINUX_S_IFLNK 0120000 468#define LINUX_S_IFREG 0100000 469#define LINUX_S_IFBLK 0060000 470#define LINUX_S_IFDIR 0040000 471#define LINUX_S_IFCHR 0020000 472#define LINUX_S_IFIFO 0010000 473#define LINUX_S_ISUID 0004000 474#define LINUX_S_ISGID 0002000 475#define LINUX_S_ISVTX 0001000 476 477#define LINUX_S_IRWXU 00700 478#define LINUX_S_IRUSR 00400 479#define LINUX_S_IWUSR 00200 480#define LINUX_S_IXUSR 00100 481 482#define LINUX_S_IRWXG 00070 483#define LINUX_S_IRGRP 00040 484#define LINUX_S_IWGRP 00020 485#define LINUX_S_IXGRP 00010 486 487#define LINUX_S_IRWXO 00007 488#define LINUX_S_IROTH 00004 489#define LINUX_S_IWOTH 00002 490#define LINUX_S_IXOTH 00001 491 492#define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK) 493#define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG) 494#define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR) 495#define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR) 496#define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK) 497#define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO) 498#define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK) 499 500/* 501 * ext2 size of an inode 502 */ 503#define EXT2_I_SIZE(i) ((i)->i_size | ((__u64) (i)->i_size_high << 32)) 504 505/* 506 * ext2_icount_t abstraction 507 */ 508#define EXT2_ICOUNT_OPT_INCREMENT 0x01 509 510typedef struct ext2_icount *ext2_icount_t; 511 512/* 513 * Flags for ext2fs_bmap 514 */ 515#define BMAP_ALLOC 0x0001 516#define BMAP_SET 0x0002 517 518/* 519 * Returned flags from ext2fs_bmap 520 */ 521#define BMAP_RET_UNINIT 0x0001 522 523/* 524 * Flags for imager.c functions 525 */ 526#define IMAGER_FLAG_INODEMAP 1 527#define IMAGER_FLAG_SPARSEWRITE 2 528 529/* 530 * For checking structure magic numbers... 531 */ 532 533#define EXT2_CHECK_MAGIC(struct, code) \ 534 if ((struct)->magic != (code)) return (code) 535 536 537/* 538 * For ext2 compression support 539 */ 540#define EXT2FS_COMPRESSED_BLKADDR ((blk_t) -1) 541#define HOLE_BLKADDR(_b) ((_b) == 0 || (_b) == EXT2FS_COMPRESSED_BLKADDR) 542 543/* 544 * Features supported by this version of the library 545 */ 546#define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\ 547 EXT2_FEATURE_COMPAT_IMAGIC_INODES|\ 548 EXT3_FEATURE_COMPAT_HAS_JOURNAL|\ 549 EXT2_FEATURE_COMPAT_RESIZE_INODE|\ 550 EXT2_FEATURE_COMPAT_DIR_INDEX|\ 551 EXT2_FEATURE_COMPAT_EXT_ATTR) 552 553/* This #ifdef is temporary until compression is fully supported */ 554#ifdef ENABLE_COMPRESSION 555#ifndef I_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL 556/* If the below warning bugs you, then have 557 `CPPFLAGS=-DI_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL' in your 558 environment at configure time. */ 559 #warning "Compression support is experimental" 560#endif 561#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 562 EXT2_FEATURE_INCOMPAT_COMPRESSION|\ 563 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 564 EXT2_FEATURE_INCOMPAT_META_BG|\ 565 EXT3_FEATURE_INCOMPAT_RECOVER|\ 566 EXT3_FEATURE_INCOMPAT_EXTENTS|\ 567 EXT4_FEATURE_INCOMPAT_FLEX_BG|\ 568 EXT4_FEATURE_INCOMPAT_MMP|\ 569 EXT4_FEATURE_INCOMPAT_64BIT) 570#else 571#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 572 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 573 EXT2_FEATURE_INCOMPAT_META_BG|\ 574 EXT3_FEATURE_INCOMPAT_RECOVER|\ 575 EXT3_FEATURE_INCOMPAT_EXTENTS|\ 576 EXT4_FEATURE_INCOMPAT_FLEX_BG|\ 577 EXT4_FEATURE_INCOMPAT_MMP|\ 578 EXT4_FEATURE_INCOMPAT_64BIT) 579#endif 580#define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\ 581 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|\ 582 EXT2_FEATURE_RO_COMPAT_LARGE_FILE|\ 583 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|\ 584 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|\ 585 EXT4_FEATURE_RO_COMPAT_GDT_CSUM|\ 586 EXT4_FEATURE_RO_COMPAT_BIGALLOC|\ 587 EXT4_FEATURE_RO_COMPAT_QUOTA) 588 589/* 590 * These features are only allowed if EXT2_FLAG_SOFTSUPP_FEATURES is passed 591 * to ext2fs_openfs() 592 */ 593#define EXT2_LIB_SOFTSUPP_INCOMPAT (0) 594#define EXT2_LIB_SOFTSUPP_RO_COMPAT (EXT4_FEATURE_RO_COMPAT_BIGALLOC) 595 596 597/* Translate a block number to a cluster number */ 598#define EXT2FS_CLUSTER_RATIO(fs) (1 << (fs)->cluster_ratio_bits) 599#define EXT2FS_CLUSTER_MASK(fs) (EXT2FS_CLUSTER_RATIO(fs) - 1) 600#define EXT2FS_B2C(fs, blk) ((blk) >> (fs)->cluster_ratio_bits) 601/* Translate a cluster number to a block number */ 602#define EXT2FS_C2B(fs, cluster) ((cluster) << (fs)->cluster_ratio_bits) 603/* Translate # of blks to # of clusters */ 604#define EXT2FS_NUM_B2C(fs, blks) (((blks) + EXT2FS_CLUSTER_MASK(fs)) >> \ 605 (fs)->cluster_ratio_bits) 606 607#if defined(HAVE_STAT64) && !defined(__OSX_AVAILABLE_BUT_DEPRECATED) 608typedef struct stat64 ext2fs_struct_stat; 609#else 610typedef struct stat ext2fs_struct_stat; 611#endif 612 613/* 614 * For ext2fs_close2() and ext2fs_flush2(), this flag allows you to 615 * avoid the fsync call. 616 */ 617#define EXT2_FLAG_FLUSH_NO_SYNC 1 618 619/* 620 * function prototypes 621 */ 622 623/* alloc.c */ 624extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode, 625 ext2fs_inode_bitmap map, ext2_ino_t *ret); 626extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal, 627 ext2fs_block_bitmap map, blk_t *ret); 628extern errcode_t ext2fs_new_block2(ext2_filsys fs, blk64_t goal, 629 ext2fs_block_bitmap map, blk64_t *ret); 630extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start, 631 blk_t finish, int num, 632 ext2fs_block_bitmap map, 633 blk_t *ret); 634extern errcode_t ext2fs_get_free_blocks2(ext2_filsys fs, blk64_t start, 635 blk64_t finish, int num, 636 ext2fs_block_bitmap map, 637 blk64_t *ret); 638extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal, 639 char *block_buf, blk_t *ret); 640extern errcode_t ext2fs_alloc_block2(ext2_filsys fs, blk64_t goal, 641 char *block_buf, blk64_t *ret); 642extern void ext2fs_set_alloc_block_callback(ext2_filsys fs, 643 errcode_t (*func)(ext2_filsys fs, 644 blk64_t goal, 645 blk64_t *ret), 646 errcode_t (**old)(ext2_filsys fs, 647 blk64_t goal, 648 blk64_t *ret)); 649 650/* alloc_sb.c */ 651extern int ext2fs_reserve_super_and_bgd(ext2_filsys fs, 652 dgrp_t group, 653 ext2fs_block_bitmap bmap); 654extern void ext2fs_set_block_alloc_stats_callback(ext2_filsys fs, 655 void (*func)(ext2_filsys fs, 656 blk64_t blk, 657 int inuse), 658 void (**old)(ext2_filsys fs, 659 blk64_t blk, 660 int inuse)); 661 662/* alloc_stats.c */ 663void ext2fs_inode_alloc_stats(ext2_filsys fs, ext2_ino_t ino, int inuse); 664void ext2fs_inode_alloc_stats2(ext2_filsys fs, ext2_ino_t ino, 665 int inuse, int isdir); 666void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse); 667void ext2fs_block_alloc_stats2(ext2_filsys fs, blk64_t blk, int inuse); 668 669/* alloc_tables.c */ 670extern errcode_t ext2fs_allocate_tables(ext2_filsys fs); 671extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group, 672 ext2fs_block_bitmap bmap); 673 674/* badblocks.c */ 675extern errcode_t ext2fs_u32_list_create(ext2_u32_list *ret, int size); 676extern errcode_t ext2fs_u32_list_add(ext2_u32_list bb, __u32 blk); 677extern int ext2fs_u32_list_find(ext2_u32_list bb, __u32 blk); 678extern int ext2fs_u32_list_test(ext2_u32_list bb, blk_t blk); 679extern errcode_t ext2fs_u32_list_iterate_begin(ext2_u32_list bb, 680 ext2_u32_iterate *ret); 681extern int ext2fs_u32_list_iterate(ext2_u32_iterate iter, blk_t *blk); 682extern void ext2fs_u32_list_iterate_end(ext2_u32_iterate iter); 683extern errcode_t ext2fs_u32_copy(ext2_u32_list src, ext2_u32_list *dest); 684extern int ext2fs_u32_list_equal(ext2_u32_list bb1, ext2_u32_list bb2); 685 686extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret, 687 int size); 688extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb, 689 blk_t blk); 690extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb, 691 blk_t blk); 692extern int ext2fs_u32_list_del(ext2_u32_list bb, __u32 blk); 693extern void ext2fs_badblocks_list_del(ext2_u32_list bb, __u32 blk); 694extern errcode_t 695 ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb, 696 ext2_badblocks_iterate *ret); 697extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter, 698 blk_t *blk); 699extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter); 700extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src, 701 ext2_badblocks_list *dest); 702extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1, 703 ext2_badblocks_list bb2); 704extern int ext2fs_u32_list_count(ext2_u32_list bb); 705 706/* bb_compat */ 707extern errcode_t badblocks_list_create(badblocks_list *ret, int size); 708extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk); 709extern int badblocks_list_test(badblocks_list bb, blk_t blk); 710extern errcode_t badblocks_list_iterate_begin(badblocks_list bb, 711 badblocks_iterate *ret); 712extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk); 713extern void badblocks_list_iterate_end(badblocks_iterate iter); 714extern void badblocks_list_free(badblocks_list bb); 715 716/* bb_inode.c */ 717extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs, 718 ext2_badblocks_list bb_list); 719 720/* bitmaps.c */ 721extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap); 722extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap); 723extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src, 724 ext2fs_generic_bitmap *dest); 725extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs); 726extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs); 727extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs); 728extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs); 729extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs, 730 const char *descr, 731 ext2fs_block_bitmap *ret); 732extern errcode_t ext2fs_allocate_subcluster_bitmap(ext2_filsys fs, 733 const char *descr, 734 ext2fs_block_bitmap *ret); 735extern int ext2fs_get_bitmap_granularity(ext2fs_block_bitmap bitmap); 736extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs, 737 const char *descr, 738 ext2fs_inode_bitmap *ret); 739extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap, 740 ext2_ino_t end, ext2_ino_t *oend); 741extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap, 742 blk_t end, blk_t *oend); 743extern errcode_t ext2fs_fudge_block_bitmap_end2(ext2fs_block_bitmap bitmap, 744 blk64_t end, blk64_t *oend); 745extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap); 746extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap); 747extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs); 748extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs); 749extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end, 750 ext2fs_inode_bitmap bmap); 751extern errcode_t ext2fs_resize_inode_bitmap2(__u64 new_end, 752 __u64 new_real_end, 753 ext2fs_inode_bitmap bmap); 754extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end, 755 ext2fs_block_bitmap bmap); 756extern errcode_t ext2fs_resize_block_bitmap2(__u64 new_end, 757 __u64 new_real_end, 758 ext2fs_block_bitmap bmap); 759extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1, 760 ext2fs_block_bitmap bm2); 761extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1, 762 ext2fs_inode_bitmap bm2); 763extern errcode_t ext2fs_set_inode_bitmap_range(ext2fs_inode_bitmap bmap, 764 ext2_ino_t start, unsigned int num, 765 void *in); 766extern errcode_t ext2fs_set_inode_bitmap_range2(ext2fs_inode_bitmap bmap, 767 __u64 start, size_t num, 768 void *in); 769extern errcode_t ext2fs_get_inode_bitmap_range(ext2fs_inode_bitmap bmap, 770 ext2_ino_t start, unsigned int num, 771 void *out); 772extern errcode_t ext2fs_get_inode_bitmap_range2(ext2fs_inode_bitmap bmap, 773 __u64 start, size_t num, 774 void *out); 775extern errcode_t ext2fs_set_block_bitmap_range(ext2fs_block_bitmap bmap, 776 blk_t start, unsigned int num, 777 void *in); 778extern errcode_t ext2fs_set_block_bitmap_range2(ext2fs_block_bitmap bmap, 779 blk64_t start, size_t num, 780 void *in); 781extern errcode_t ext2fs_get_block_bitmap_range(ext2fs_block_bitmap bmap, 782 blk_t start, unsigned int num, 783 void *out); 784extern errcode_t ext2fs_get_block_bitmap_range2(ext2fs_block_bitmap bmap, 785 blk64_t start, size_t num, 786 void *out); 787 788/* blknum.c */ 789extern dgrp_t ext2fs_group_of_blk2(ext2_filsys fs, blk64_t); 790extern blk64_t ext2fs_group_first_block2(ext2_filsys fs, dgrp_t group); 791extern blk64_t ext2fs_group_last_block2(ext2_filsys fs, dgrp_t group); 792extern int ext2fs_group_blocks_count(ext2_filsys fs, dgrp_t group); 793extern blk64_t ext2fs_inode_data_blocks2(ext2_filsys fs, 794 struct ext2_inode *inode); 795extern blk64_t ext2fs_inode_i_blocks(ext2_filsys fs, 796 struct ext2_inode *inode); 797extern blk64_t ext2fs_blocks_count(struct ext2_super_block *super); 798extern void ext2fs_blocks_count_set(struct ext2_super_block *super, 799 blk64_t blk); 800extern void ext2fs_blocks_count_add(struct ext2_super_block *super, 801 blk64_t blk); 802extern blk64_t ext2fs_r_blocks_count(struct ext2_super_block *super); 803extern void ext2fs_r_blocks_count_set(struct ext2_super_block *super, 804 blk64_t blk); 805extern void ext2fs_r_blocks_count_add(struct ext2_super_block *super, 806 blk64_t blk); 807extern blk64_t ext2fs_free_blocks_count(struct ext2_super_block *super); 808extern void ext2fs_free_blocks_count_set(struct ext2_super_block *super, 809 blk64_t blk); 810extern void ext2fs_free_blocks_count_add(struct ext2_super_block *super, 811 blk64_t blk); 812/* Block group descriptor accessor functions */ 813extern struct ext2_group_desc *ext2fs_group_desc(ext2_filsys fs, 814 struct opaque_ext2_group_desc *gdp, 815 dgrp_t group); 816extern blk64_t ext2fs_block_bitmap_loc(ext2_filsys fs, dgrp_t group); 817extern void ext2fs_block_bitmap_loc_set(ext2_filsys fs, dgrp_t group, 818 blk64_t blk); 819extern blk64_t ext2fs_inode_bitmap_loc(ext2_filsys fs, dgrp_t group); 820extern void ext2fs_inode_bitmap_loc_set(ext2_filsys fs, dgrp_t group, 821 blk64_t blk); 822extern blk64_t ext2fs_inode_table_loc(ext2_filsys fs, dgrp_t group); 823extern void ext2fs_inode_table_loc_set(ext2_filsys fs, dgrp_t group, 824 blk64_t blk); 825extern __u32 ext2fs_bg_free_blocks_count(ext2_filsys fs, dgrp_t group); 826extern void ext2fs_bg_free_blocks_count_set(ext2_filsys fs, dgrp_t group, 827 __u32 n); 828extern __u32 ext2fs_bg_free_inodes_count(ext2_filsys fs, dgrp_t group); 829extern void ext2fs_bg_free_inodes_count_set(ext2_filsys fs, dgrp_t group, 830 __u32 n); 831extern __u32 ext2fs_bg_used_dirs_count(ext2_filsys fs, dgrp_t group); 832extern void ext2fs_bg_used_dirs_count_set(ext2_filsys fs, dgrp_t group, 833 __u32 n); 834extern __u32 ext2fs_bg_itable_unused(ext2_filsys fs, dgrp_t group); 835extern void ext2fs_bg_itable_unused_set(ext2_filsys fs, dgrp_t group, 836 __u32 n); 837extern __u16 ext2fs_bg_flags(ext2_filsys fs, dgrp_t group); 838extern void ext2fs_bg_flags_zap(ext2_filsys fs, dgrp_t group); 839extern int ext2fs_bg_flags_test(ext2_filsys fs, dgrp_t group, __u16 bg_flag); 840extern void ext2fs_bg_flags_set(ext2_filsys fs, dgrp_t group, __u16 bg_flags); 841extern void ext2fs_bg_flags_clear(ext2_filsys fs, dgrp_t group, __u16 bg_flags); 842extern __u16 ext2fs_bg_checksum(ext2_filsys fs, dgrp_t group); 843extern void ext2fs_bg_checksum_set(ext2_filsys fs, dgrp_t group, __u16 checksum); 844extern blk64_t ext2fs_file_acl_block(const struct ext2_inode *inode); 845extern void ext2fs_file_acl_block_set(struct ext2_inode *inode, blk64_t blk); 846 847/* block.c */ 848extern errcode_t ext2fs_block_iterate(ext2_filsys fs, 849 ext2_ino_t ino, 850 int flags, 851 char *block_buf, 852 int (*func)(ext2_filsys fs, 853 blk_t *blocknr, 854 int blockcnt, 855 void *priv_data), 856 void *priv_data); 857errcode_t ext2fs_block_iterate2(ext2_filsys fs, 858 ext2_ino_t ino, 859 int flags, 860 char *block_buf, 861 int (*func)(ext2_filsys fs, 862 blk_t *blocknr, 863 e2_blkcnt_t blockcnt, 864 blk_t ref_blk, 865 int ref_offset, 866 void *priv_data), 867 void *priv_data); 868errcode_t ext2fs_block_iterate3(ext2_filsys fs, 869 ext2_ino_t ino, 870 int flags, 871 char *block_buf, 872 int (*func)(ext2_filsys fs, 873 blk64_t *blocknr, 874 e2_blkcnt_t blockcnt, 875 blk64_t ref_blk, 876 int ref_offset, 877 void *priv_data), 878 void *priv_data); 879 880/* bmap.c */ 881extern errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino, 882 struct ext2_inode *inode, 883 char *block_buf, int bmap_flags, 884 blk_t block, blk_t *phys_blk); 885extern errcode_t ext2fs_bmap2(ext2_filsys fs, ext2_ino_t ino, 886 struct ext2_inode *inode, 887 char *block_buf, int bmap_flags, blk64_t block, 888 int *ret_flags, blk64_t *phys_blk); 889 890#if 0 891/* bmove.c */ 892extern errcode_t ext2fs_move_blocks(ext2_filsys fs, 893 ext2fs_block_bitmap reserve, 894 ext2fs_block_bitmap alloc_map, 895 int flags); 896#endif 897 898/* check_desc.c */ 899extern errcode_t ext2fs_check_desc(ext2_filsys fs); 900 901/* closefs.c */ 902extern errcode_t ext2fs_close(ext2_filsys fs); 903extern errcode_t ext2fs_close2(ext2_filsys fs, int flags); 904extern errcode_t ext2fs_flush(ext2_filsys fs); 905extern errcode_t ext2fs_flush2(ext2_filsys fs, int flags); 906extern int ext2fs_bg_has_super(ext2_filsys fs, int group_block); 907extern errcode_t ext2fs_super_and_bgd_loc2(ext2_filsys fs, 908 dgrp_t group, 909 blk64_t *ret_super_blk, 910 blk64_t *ret_old_desc_blk, 911 blk64_t *ret_new_desc_blk, 912 blk_t *ret_used_blks); 913extern int ext2fs_super_and_bgd_loc(ext2_filsys fs, 914 dgrp_t group, 915 blk_t *ret_super_blk, 916 blk_t *ret_old_desc_blk, 917 blk_t *ret_new_desc_blk, 918 int *ret_meta_bg); 919extern void ext2fs_update_dynamic_rev(ext2_filsys fs); 920 921/* crc32c.c */ 922extern __u32 ext2fs_crc32c_be(__u32 crc, unsigned char const *p, size_t len); 923extern __u32 ext2fs_crc32c_le(__u32 crc, unsigned char const *p, size_t len); 924 925/* csum.c */ 926extern void ext2fs_group_desc_csum_set(ext2_filsys fs, dgrp_t group); 927extern int ext2fs_group_desc_csum_verify(ext2_filsys fs, dgrp_t group); 928extern errcode_t ext2fs_set_gdt_csum(ext2_filsys fs); 929 930/* dblist.c */ 931 932extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs); 933extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist); 934extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ext2_ino_t ino, 935 blk_t blk, int blockcnt); 936extern errcode_t ext2fs_add_dir_block2(ext2_dblist dblist, ext2_ino_t ino, 937 blk64_t blk, e2_blkcnt_t blockcnt); 938extern void ext2fs_dblist_sort(ext2_dblist dblist, 939 EXT2_QSORT_TYPE (*sortfunc)(const void *, 940 const void *)); 941extern void ext2fs_dblist_sort2(ext2_dblist dblist, 942 EXT2_QSORT_TYPE (*sortfunc)(const void *, 943 const void *)); 944extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist, 945 int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info, 946 void *priv_data), 947 void *priv_data); 948extern errcode_t ext2fs_dblist_iterate2(ext2_dblist dblist, 949 int (*func)(ext2_filsys fs, struct ext2_db_entry2 *db_info, 950 void *priv_data), 951 void *priv_data); 952extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ext2_ino_t ino, 953 blk_t blk, int blockcnt); 954extern errcode_t ext2fs_set_dir_block2(ext2_dblist dblist, ext2_ino_t ino, 955 blk64_t blk, e2_blkcnt_t blockcnt); 956extern errcode_t ext2fs_copy_dblist(ext2_dblist src, 957 ext2_dblist *dest); 958extern int ext2fs_dblist_count(ext2_dblist dblist); 959extern blk64_t ext2fs_dblist_count2(ext2_dblist dblist); 960extern errcode_t ext2fs_dblist_get_last(ext2_dblist dblist, 961 struct ext2_db_entry **entry); 962extern errcode_t ext2fs_dblist_get_last2(ext2_dblist dblist, 963 struct ext2_db_entry2 **entry); 964extern errcode_t ext2fs_dblist_drop_last(ext2_dblist dblist); 965 966/* dblist_dir.c */ 967extern errcode_t 968 ext2fs_dblist_dir_iterate(ext2_dblist dblist, 969 int flags, 970 char *block_buf, 971 int (*func)(ext2_ino_t dir, 972 int entry, 973 struct ext2_dir_entry *dirent, 974 int offset, 975 int blocksize, 976 char *buf, 977 void *priv_data), 978 void *priv_data); 979 980/* dirblock.c */ 981extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block, 982 void *buf); 983extern errcode_t ext2fs_read_dir_block2(ext2_filsys fs, blk_t block, 984 void *buf, int flags); 985extern errcode_t ext2fs_read_dir_block3(ext2_filsys fs, blk64_t block, 986 void *buf, int flags); 987extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block, 988 void *buf); 989extern errcode_t ext2fs_write_dir_block2(ext2_filsys fs, blk_t block, 990 void *buf, int flags); 991extern errcode_t ext2fs_write_dir_block3(ext2_filsys fs, blk64_t block, 992 void *buf, int flags); 993 994/* dirhash.c */ 995extern errcode_t ext2fs_dirhash(int version, const char *name, int len, 996 const __u32 *seed, 997 ext2_dirhash_t *ret_hash, 998 ext2_dirhash_t *ret_minor_hash); 999 1000 1001/* dir_iterate.c */ 1002extern errcode_t ext2fs_get_rec_len(ext2_filsys fs, 1003 struct ext2_dir_entry *dirent, 1004 unsigned int *rec_len); 1005extern errcode_t ext2fs_set_rec_len(ext2_filsys fs, 1006 unsigned int len, 1007 struct ext2_dir_entry *dirent); 1008extern errcode_t ext2fs_dir_iterate(ext2_filsys fs, 1009 ext2_ino_t dir, 1010 int flags, 1011 char *block_buf, 1012 int (*func)(struct ext2_dir_entry *dirent, 1013 int offset, 1014 int blocksize, 1015 char *buf, 1016 void *priv_data), 1017 void *priv_data); 1018extern errcode_t ext2fs_dir_iterate2(ext2_filsys fs, 1019 ext2_ino_t dir, 1020 int flags, 1021 char *block_buf, 1022 int (*func)(ext2_ino_t dir, 1023 int entry, 1024 struct ext2_dir_entry *dirent, 1025 int offset, 1026 int blocksize, 1027 char *buf, 1028 void *priv_data), 1029 void *priv_data); 1030 1031/* dupfs.c */ 1032extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest); 1033 1034/* expanddir.c */ 1035extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir); 1036 1037/* ext_attr.c */ 1038extern __u32 ext2fs_ext_attr_hash_entry(struct ext2_ext_attr_entry *entry, 1039 void *data); 1040extern errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf); 1041extern errcode_t ext2fs_read_ext_attr2(ext2_filsys fs, blk64_t block, 1042 void *buf); 1043extern errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block, 1044 void *buf); 1045extern errcode_t ext2fs_write_ext_attr2(ext2_filsys fs, blk64_t block, 1046 void *buf); 1047extern errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk, 1048 char *block_buf, 1049 int adjust, __u32 *newcount); 1050extern errcode_t ext2fs_adjust_ea_refcount2(ext2_filsys fs, blk64_t blk, 1051 char *block_buf, 1052 int adjust, __u32 *newcount); 1053 1054/* extent.c */ 1055extern errcode_t ext2fs_extent_header_verify(void *ptr, int size); 1056extern errcode_t ext2fs_extent_open(ext2_filsys fs, ext2_ino_t ino, 1057 ext2_extent_handle_t *handle); 1058extern errcode_t ext2fs_extent_open2(ext2_filsys fs, ext2_ino_t ino, 1059 struct ext2_inode *inode, 1060 ext2_extent_handle_t *ret_handle); 1061extern void ext2fs_extent_free(ext2_extent_handle_t handle); 1062extern errcode_t ext2fs_extent_get(ext2_extent_handle_t handle, 1063 int flags, struct ext2fs_extent *extent); 1064extern errcode_t ext2fs_extent_replace(ext2_extent_handle_t handle, int flags, 1065 struct ext2fs_extent *extent); 1066extern errcode_t ext2fs_extent_insert(ext2_extent_handle_t handle, int flags, 1067 struct ext2fs_extent *extent); 1068extern errcode_t ext2fs_extent_set_bmap(ext2_extent_handle_t handle, 1069 blk64_t logical, blk64_t physical, 1070 int flags); 1071extern errcode_t ext2fs_extent_delete(ext2_extent_handle_t handle, int flags); 1072extern errcode_t ext2fs_extent_get_info(ext2_extent_handle_t handle, 1073 struct ext2_extent_info *info); 1074extern errcode_t ext2fs_extent_goto(ext2_extent_handle_t handle, 1075 blk64_t blk); 1076 1077/* fileio.c */ 1078extern errcode_t ext2fs_file_open2(ext2_filsys fs, ext2_ino_t ino, 1079 struct ext2_inode *inode, 1080 int flags, ext2_file_t *ret); 1081extern errcode_t ext2fs_file_open(ext2_filsys fs, ext2_ino_t ino, 1082 int flags, ext2_file_t *ret); 1083extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file); 1084struct ext2_inode *ext2fs_file_get_inode(ext2_file_t file); 1085extern errcode_t ext2fs_file_close(ext2_file_t file); 1086extern errcode_t ext2fs_file_flush(ext2_file_t file); 1087extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf, 1088 unsigned int wanted, unsigned int *got); 1089extern errcode_t ext2fs_file_write(ext2_file_t file, const void *buf, 1090 unsigned int nbytes, unsigned int *written); 1091extern errcode_t ext2fs_file_llseek(ext2_file_t file, __u64 offset, 1092 int whence, __u64 *ret_pos); 1093extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset, 1094 int whence, ext2_off_t *ret_pos); 1095errcode_t ext2fs_file_get_lsize(ext2_file_t file, __u64 *ret_size); 1096extern ext2_off_t ext2fs_file_get_size(ext2_file_t file); 1097extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size); 1098extern errcode_t ext2fs_file_set_size2(ext2_file_t file, ext2_off64_t size); 1099 1100/* finddev.c */ 1101extern char *ext2fs_find_block_device(dev_t device); 1102 1103/* flushb.c */ 1104extern errcode_t ext2fs_sync_device(int fd, int flushb); 1105 1106/* freefs.c */ 1107extern void ext2fs_free(ext2_filsys fs); 1108extern void ext2fs_free_dblist(ext2_dblist dblist); 1109extern void ext2fs_badblocks_list_free(ext2_badblocks_list bb); 1110extern void ext2fs_u32_list_free(ext2_u32_list bb); 1111 1112/* gen_bitmap.c */ 1113extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap); 1114extern errcode_t ext2fs_make_generic_bitmap(errcode_t magic, ext2_filsys fs, 1115 __u32 start, __u32 end, 1116 __u32 real_end, 1117 const char *descr, char *init_map, 1118 ext2fs_generic_bitmap *ret); 1119extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start, 1120 __u32 end, 1121 __u32 real_end, 1122 const char *descr, 1123 ext2fs_generic_bitmap *ret); 1124extern errcode_t ext2fs_copy_generic_bitmap(ext2fs_generic_bitmap src, 1125 ext2fs_generic_bitmap *dest); 1126extern void ext2fs_clear_generic_bitmap(ext2fs_generic_bitmap bitmap); 1127extern errcode_t ext2fs_fudge_generic_bitmap_end(ext2fs_inode_bitmap bitmap, 1128 errcode_t magic, 1129 errcode_t neq, 1130 ext2_ino_t end, 1131 ext2_ino_t *oend); 1132extern void ext2fs_set_generic_bitmap_padding(ext2fs_generic_bitmap map); 1133extern errcode_t ext2fs_resize_generic_bitmap(errcode_t magic, 1134 __u32 new_end, 1135 __u32 new_real_end, 1136 ext2fs_generic_bitmap bmap); 1137extern errcode_t ext2fs_compare_generic_bitmap(errcode_t magic, errcode_t neq, 1138 ext2fs_generic_bitmap bm1, 1139 ext2fs_generic_bitmap bm2); 1140extern errcode_t ext2fs_get_generic_bitmap_range(ext2fs_generic_bitmap bmap, 1141 errcode_t magic, 1142 __u32 start, __u32 num, 1143 void *out); 1144extern errcode_t ext2fs_set_generic_bitmap_range(ext2fs_generic_bitmap bmap, 1145 errcode_t magic, 1146 __u32 start, __u32 num, 1147 void *in); 1148 1149/* gen_bitmap64.c */ 1150void ext2fs_free_generic_bmap(ext2fs_generic_bitmap bmap); 1151errcode_t ext2fs_alloc_generic_bmap(ext2_filsys fs, errcode_t magic, 1152 int type, __u64 start, __u64 end, 1153 __u64 real_end, 1154 const char *descr, 1155 ext2fs_generic_bitmap *ret); 1156errcode_t ext2fs_copy_generic_bmap(ext2fs_generic_bitmap src, 1157 ext2fs_generic_bitmap *dest); 1158void ext2fs_clear_generic_bmap(ext2fs_generic_bitmap bitmap); 1159errcode_t ext2fs_fudge_generic_bmap_end(ext2fs_generic_bitmap bitmap, 1160 errcode_t neq, 1161 __u64 end, __u64 *oend); 1162void ext2fs_set_generic_bmap_padding(ext2fs_generic_bitmap bmap); 1163errcode_t ext2fs_resize_generic_bmap(ext2fs_generic_bitmap bmap, 1164 __u64 new_end, 1165 __u64 new_real_end); 1166errcode_t ext2fs_compare_generic_bmap(errcode_t neq, 1167 ext2fs_generic_bitmap bm1, 1168 ext2fs_generic_bitmap bm2); 1169errcode_t ext2fs_get_generic_bmap_range(ext2fs_generic_bitmap bmap, 1170 __u64 start, unsigned int num, 1171 void *out); 1172errcode_t ext2fs_set_generic_bmap_range(ext2fs_generic_bitmap bmap, 1173 __u64 start, unsigned int num, 1174 void *in); 1175errcode_t ext2fs_convert_subcluster_bitmap(ext2_filsys fs, 1176 ext2fs_block_bitmap *bitmap); 1177 1178/* getsize.c */ 1179extern errcode_t ext2fs_get_device_size(const char *file, int blocksize, 1180 blk_t *retblocks); 1181extern errcode_t ext2fs_get_device_size2(const char *file, int blocksize, 1182 blk64_t *retblocks); 1183 1184/* getsectsize.c */ 1185errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize); 1186errcode_t ext2fs_get_device_phys_sectsize(const char *file, int *sectsize); 1187 1188/* i_block.c */ 1189errcode_t ext2fs_iblk_add_blocks(ext2_filsys fs, struct ext2_inode *inode, 1190 blk64_t num_blocks); 1191errcode_t ext2fs_iblk_sub_blocks(ext2_filsys fs, struct ext2_inode *inode, 1192 blk64_t num_blocks); 1193errcode_t ext2fs_iblk_set(ext2_filsys fs, struct ext2_inode *inode, blk64_t b); 1194 1195/* imager.c */ 1196extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags); 1197extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags); 1198extern errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd, int flags); 1199extern errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd, int flags); 1200extern errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags); 1201extern errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags); 1202 1203/* ind_block.c */ 1204errcode_t ext2fs_read_ind_block(ext2_filsys fs, blk_t blk, void *buf); 1205errcode_t ext2fs_write_ind_block(ext2_filsys fs, blk_t blk, void *buf); 1206 1207/* initialize.c */ 1208extern errcode_t ext2fs_initialize(const char *name, int flags, 1209 struct ext2_super_block *param, 1210 io_manager manager, ext2_filsys *ret_fs); 1211 1212/* icount.c */ 1213extern void ext2fs_free_icount(ext2_icount_t icount); 1214extern errcode_t ext2fs_create_icount_tdb(ext2_filsys fs, char *tdb_dir, 1215 int flags, ext2_icount_t *ret); 1216extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags, 1217 unsigned int size, 1218 ext2_icount_t hint, ext2_icount_t *ret); 1219extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags, 1220 unsigned int size, 1221 ext2_icount_t *ret); 1222extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ext2_ino_t ino, 1223 __u16 *ret); 1224extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ext2_ino_t ino, 1225 __u16 *ret); 1226extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ext2_ino_t ino, 1227 __u16 *ret); 1228extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ext2_ino_t ino, 1229 __u16 count); 1230extern ext2_ino_t ext2fs_get_icount_size(ext2_icount_t icount); 1231errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *); 1232 1233/* inode.c */ 1234extern errcode_t ext2fs_flush_icache(ext2_filsys fs); 1235extern errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan, 1236 ext2_ino_t *ino, 1237 struct ext2_inode *inode, 1238 int bufsize); 1239extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks, 1240 ext2_inode_scan *ret_scan); 1241extern void ext2fs_close_inode_scan(ext2_inode_scan scan); 1242extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino, 1243 struct ext2_inode *inode); 1244extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan, 1245 int group); 1246extern void ext2fs_set_inode_callback 1247 (ext2_inode_scan scan, 1248 errcode_t (*done_group)(ext2_filsys fs, 1249 ext2_inode_scan scan, 1250 dgrp_t group, 1251 void * priv_data), 1252 void *done_group_data); 1253extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags, 1254 int clear_flags); 1255extern errcode_t ext2fs_read_inode_full(ext2_filsys fs, ext2_ino_t ino, 1256 struct ext2_inode * inode, 1257 int bufsize); 1258extern errcode_t ext2fs_read_inode (ext2_filsys fs, ext2_ino_t ino, 1259 struct ext2_inode * inode); 1260extern errcode_t ext2fs_write_inode_full(ext2_filsys fs, ext2_ino_t ino, 1261 struct ext2_inode * inode, 1262 int bufsize); 1263extern errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino, 1264 struct ext2_inode * inode); 1265extern errcode_t ext2fs_write_new_inode(ext2_filsys fs, ext2_ino_t ino, 1266 struct ext2_inode * inode); 1267extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); 1268extern errcode_t ext2fs_check_directory(ext2_filsys fs, ext2_ino_t ino); 1269 1270/* inode_io.c */ 1271extern io_manager inode_io_manager; 1272extern errcode_t ext2fs_inode_io_intern(ext2_filsys fs, ext2_ino_t ino, 1273 char **name); 1274extern errcode_t ext2fs_inode_io_intern2(ext2_filsys fs, ext2_ino_t ino, 1275 struct ext2_inode *inode, 1276 char **name); 1277 1278/* ismounted.c */ 1279extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags); 1280extern errcode_t ext2fs_check_mount_point(const char *device, int *mount_flags, 1281 char *mtpt, int mtlen); 1282 1283/* punch.c */ 1284extern errcode_t ext2fs_punch(ext2_filsys fs, ext2_ino_t ino, 1285 struct ext2_inode *inode, 1286 char *block_buf, blk64_t start, 1287 blk64_t end); 1288 1289/* namei.c */ 1290extern errcode_t ext2fs_lookup(ext2_filsys fs, ext2_ino_t dir, const char *name, 1291 int namelen, char *buf, ext2_ino_t *inode); 1292extern errcode_t ext2fs_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1293 const char *name, ext2_ino_t *inode); 1294errcode_t ext2fs_namei_follow(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1295 const char *name, ext2_ino_t *inode); 1296extern errcode_t ext2fs_follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1297 ext2_ino_t inode, ext2_ino_t *res_inode); 1298 1299/* native.c */ 1300int ext2fs_native_flag(void); 1301 1302/* newdir.c */ 1303extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino, 1304 ext2_ino_t parent_ino, char **block); 1305 1306/* mkdir.c */ 1307extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum, 1308 const char *name); 1309 1310/* mkjournal.c */ 1311extern errcode_t ext2fs_zero_blocks(ext2_filsys fs, blk_t blk, int num, 1312 blk_t *ret_blk, int *ret_count); 1313extern errcode_t ext2fs_zero_blocks2(ext2_filsys fs, blk64_t blk, int num, 1314 blk64_t *ret_blk, int *ret_count); 1315extern errcode_t ext2fs_create_journal_superblock(ext2_filsys fs, 1316 __u32 num_blocks, int flags, 1317 char **ret_jsb); 1318extern errcode_t ext2fs_add_journal_device(ext2_filsys fs, 1319 ext2_filsys journal_dev); 1320extern errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t num_blocks, 1321 int flags); 1322extern int ext2fs_default_journal_size(__u64 num_blocks); 1323 1324/* openfs.c */ 1325extern errcode_t ext2fs_open(const char *name, int flags, int superblock, 1326 unsigned int block_size, io_manager manager, 1327 ext2_filsys *ret_fs); 1328extern errcode_t ext2fs_open2(const char *name, const char *io_options, 1329 int flags, int superblock, 1330 unsigned int block_size, io_manager manager, 1331 ext2_filsys *ret_fs); 1332extern blk64_t ext2fs_descriptor_block_loc2(ext2_filsys fs, 1333 blk64_t group_block, dgrp_t i); 1334extern blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block, 1335 dgrp_t i); 1336errcode_t ext2fs_get_data_io(ext2_filsys fs, io_channel *old_io); 1337errcode_t ext2fs_set_data_io(ext2_filsys fs, io_channel new_io); 1338errcode_t ext2fs_rewrite_to_io(ext2_filsys fs, io_channel new_io); 1339 1340/* get_pathname.c */ 1341extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino, 1342 char **name); 1343 1344/* link.c */ 1345errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name, 1346 ext2_ino_t ino, int flags); 1347errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir, const char *name, 1348 ext2_ino_t ino, int flags); 1349 1350/* mmp.c */ 1351errcode_t ext2fs_mmp_read(ext2_filsys fs, blk64_t mmp_blk, void *buf); 1352errcode_t ext2fs_mmp_write(ext2_filsys fs, blk64_t mmp_blk, void *buf); 1353errcode_t ext2fs_mmp_clear(ext2_filsys fs); 1354errcode_t ext2fs_mmp_init(ext2_filsys fs); 1355errcode_t ext2fs_mmp_start(ext2_filsys fs); 1356errcode_t ext2fs_mmp_update(ext2_filsys fs); 1357errcode_t ext2fs_mmp_stop(ext2_filsys fs); 1358unsigned ext2fs_mmp_new_seq(); 1359 1360/* read_bb.c */ 1361extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs, 1362 ext2_badblocks_list *bb_list); 1363 1364/* read_bb_file.c */ 1365extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f, 1366 ext2_badblocks_list *bb_list, 1367 void *priv_data, 1368 void (*invalid)(ext2_filsys fs, 1369 blk_t blk, 1370 char *badstr, 1371 void *priv_data)); 1372extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f, 1373 ext2_badblocks_list *bb_list, 1374 void (*invalid)(ext2_filsys fs, 1375 blk_t blk)); 1376 1377/* res_gdt.c */ 1378extern errcode_t ext2fs_create_resize_inode(ext2_filsys fs); 1379 1380/* swapfs.c */ 1381extern void ext2fs_swap_ext_attr(char *to, char *from, int bufsize, 1382 int has_header); 1383extern void ext2fs_swap_ext_attr_header(struct ext2_ext_attr_header *to_header, 1384 struct ext2_ext_attr_header *from_hdr); 1385extern void ext2fs_swap_ext_attr_entry(struct ext2_ext_attr_entry *to_entry, 1386 struct ext2_ext_attr_entry *from_entry); 1387extern void ext2fs_swap_super(struct ext2_super_block * super); 1388extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp); 1389extern void ext2fs_swap_group_desc2(ext2_filsys, struct ext2_group_desc *gdp); 1390extern void ext2fs_swap_inode_full(ext2_filsys fs, struct ext2_inode_large *t, 1391 struct ext2_inode_large *f, int hostorder, 1392 int bufsize); 1393extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t, 1394 struct ext2_inode *f, int hostorder); 1395extern void ext2fs_swap_mmp(struct mmp_struct *mmp); 1396 1397/* valid_blk.c */ 1398extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode); 1399 1400/* version.c */ 1401extern int ext2fs_parse_version_string(const char *ver_string); 1402extern int ext2fs_get_library_version(const char **ver_string, 1403 const char **date_string); 1404 1405/* write_bb_file.c */ 1406extern errcode_t ext2fs_write_bb_FILE(ext2_badblocks_list bb_list, 1407 unsigned int flags, 1408 FILE *f); 1409 1410 1411/* inline functions */ 1412extern errcode_t ext2fs_get_mem(unsigned long size, void *ptr); 1413extern errcode_t ext2fs_get_memalign(unsigned long size, 1414 unsigned long align, void *ptr); 1415extern errcode_t ext2fs_get_memzero(unsigned long size, void *ptr); 1416extern errcode_t ext2fs_get_array(unsigned long count, 1417 unsigned long size, void *ptr); 1418extern errcode_t ext2fs_get_arrayzero(unsigned long count, 1419 unsigned long size, void *ptr); 1420extern errcode_t ext2fs_free_mem(void *ptr); 1421extern errcode_t ext2fs_resize_mem(unsigned long old_size, 1422 unsigned long size, void *ptr); 1423extern void ext2fs_mark_super_dirty(ext2_filsys fs); 1424extern void ext2fs_mark_changed(ext2_filsys fs); 1425extern int ext2fs_test_changed(ext2_filsys fs); 1426extern void ext2fs_mark_valid(ext2_filsys fs); 1427extern void ext2fs_unmark_valid(ext2_filsys fs); 1428extern int ext2fs_test_valid(ext2_filsys fs); 1429extern void ext2fs_mark_ib_dirty(ext2_filsys fs); 1430extern void ext2fs_mark_bb_dirty(ext2_filsys fs); 1431extern int ext2fs_test_ib_dirty(ext2_filsys fs); 1432extern int ext2fs_test_bb_dirty(ext2_filsys fs); 1433extern int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk); 1434extern int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino); 1435extern blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group); 1436extern blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group); 1437extern blk_t ext2fs_inode_data_blocks(ext2_filsys fs, 1438 struct ext2_inode *inode); 1439extern unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b); 1440extern __u64 ext2fs_div64_ceil(__u64 a, __u64 b); 1441extern int ext2fs_open_file(const char *pathname, int flags, ...); 1442extern int ext2fs_stat(const char *path, ext2fs_struct_stat *buf); 1443extern int ext2fs_fstat(int fd, ext2fs_struct_stat *buf); 1444 1445/* 1446 * The actual inlined functions definitions themselves... 1447 * 1448 * If NO_INLINE_FUNCS is defined, then we won't try to do inline 1449 * functions at all! 1450 */ 1451#if (defined(INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS)) 1452#ifdef INCLUDE_INLINE_FUNCS 1453#define _INLINE_ extern 1454#else 1455#ifdef __GNUC__ 1456#define _INLINE_ extern __inline__ 1457#else /* For Watcom C */ 1458#define _INLINE_ extern inline 1459#endif 1460#endif 1461 1462#ifndef EXT2_CUSTOM_MEMORY_ROUTINES 1463#include <string.h> 1464/* 1465 * Allocate memory 1466 */ 1467_INLINE_ errcode_t ext2fs_get_mem(unsigned long size, void *ptr) 1468{ 1469 void *pp; 1470 1471 pp = malloc(size); 1472 if (!pp) 1473 return EXT2_ET_NO_MEMORY; 1474 memcpy(ptr, &pp, sizeof (pp)); 1475 return 0; 1476} 1477 1478_INLINE_ errcode_t ext2fs_get_memalign(unsigned long size, 1479 unsigned long align, void *ptr) 1480{ 1481 errcode_t retval; 1482 1483 if (align == 0) 1484 align = 8; 1485 retval = posix_memalign((void **) ptr, align, size); 1486 if (retval) { 1487 if (retval == ENOMEM) 1488 return EXT2_ET_NO_MEMORY; 1489 return retval; 1490 } 1491 return 0; 1492} 1493 1494_INLINE_ errcode_t ext2fs_get_memzero(unsigned long size, void *ptr) 1495{ 1496 void *pp; 1497 1498 pp = malloc(size); 1499 if (!pp) 1500 return EXT2_ET_NO_MEMORY; 1501 memset(pp, 0, size); 1502 memcpy(ptr, &pp, sizeof(pp)); 1503 return 0; 1504} 1505 1506_INLINE_ errcode_t ext2fs_get_array(unsigned long count, unsigned long size, void *ptr) 1507{ 1508 if (count && (-1UL)/count<size) 1509 return EXT2_ET_NO_MEMORY; 1510 return ext2fs_get_mem(count*size, ptr); 1511} 1512 1513_INLINE_ errcode_t ext2fs_get_arrayzero(unsigned long count, 1514 unsigned long size, void *ptr) 1515{ 1516 void *pp; 1517 1518 if (count && (-1UL)/count<size) 1519 return EXT2_ET_NO_MEMORY; 1520 pp = calloc(count, size); 1521 if (!pp) 1522 return EXT2_ET_NO_MEMORY; 1523 memcpy(ptr, &pp, sizeof(pp)); 1524 return 0; 1525} 1526 1527/* 1528 * Free memory 1529 */ 1530_INLINE_ errcode_t ext2fs_free_mem(void *ptr) 1531{ 1532 void *p; 1533 1534 memcpy(&p, ptr, sizeof(p)); 1535 free(p); 1536 p = 0; 1537 memcpy(ptr, &p, sizeof(p)); 1538 return 0; 1539} 1540 1541/* 1542 * Resize memory 1543 */ 1544_INLINE_ errcode_t ext2fs_resize_mem(unsigned long EXT2FS_ATTR((unused)) old_size, 1545 unsigned long size, void *ptr) 1546{ 1547 void *p; 1548 1549 /* Use "memcpy" for pointer assignments here to avoid problems 1550 * with C99 strict type aliasing rules. */ 1551 memcpy(&p, ptr, sizeof(p)); 1552 p = realloc(p, size); 1553 if (!p) 1554 return EXT2_ET_NO_MEMORY; 1555 memcpy(ptr, &p, sizeof(p)); 1556 return 0; 1557} 1558#endif /* Custom memory routines */ 1559 1560/* 1561 * Mark a filesystem superblock as dirty 1562 */ 1563_INLINE_ void ext2fs_mark_super_dirty(ext2_filsys fs) 1564{ 1565 fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_CHANGED; 1566} 1567 1568/* 1569 * Mark a filesystem as changed 1570 */ 1571_INLINE_ void ext2fs_mark_changed(ext2_filsys fs) 1572{ 1573 fs->flags |= EXT2_FLAG_CHANGED; 1574} 1575 1576/* 1577 * Check to see if a filesystem has changed 1578 */ 1579_INLINE_ int ext2fs_test_changed(ext2_filsys fs) 1580{ 1581 return (fs->flags & EXT2_FLAG_CHANGED); 1582} 1583 1584/* 1585 * Mark a filesystem as valid 1586 */ 1587_INLINE_ void ext2fs_mark_valid(ext2_filsys fs) 1588{ 1589 fs->flags |= EXT2_FLAG_VALID; 1590} 1591 1592/* 1593 * Mark a filesystem as NOT valid 1594 */ 1595_INLINE_ void ext2fs_unmark_valid(ext2_filsys fs) 1596{ 1597 fs->flags &= ~EXT2_FLAG_VALID; 1598} 1599 1600/* 1601 * Check to see if a filesystem is valid 1602 */ 1603_INLINE_ int ext2fs_test_valid(ext2_filsys fs) 1604{ 1605 return (fs->flags & EXT2_FLAG_VALID); 1606} 1607 1608/* 1609 * Mark the inode bitmap as dirty 1610 */ 1611_INLINE_ void ext2fs_mark_ib_dirty(ext2_filsys fs) 1612{ 1613 fs->flags |= EXT2_FLAG_IB_DIRTY | EXT2_FLAG_CHANGED; 1614} 1615 1616/* 1617 * Mark the block bitmap as dirty 1618 */ 1619_INLINE_ void ext2fs_mark_bb_dirty(ext2_filsys fs) 1620{ 1621 fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_CHANGED; 1622} 1623 1624/* 1625 * Check to see if a filesystem's inode bitmap is dirty 1626 */ 1627_INLINE_ int ext2fs_test_ib_dirty(ext2_filsys fs) 1628{ 1629 return (fs->flags & EXT2_FLAG_IB_DIRTY); 1630} 1631 1632/* 1633 * Check to see if a filesystem's block bitmap is dirty 1634 */ 1635_INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs) 1636{ 1637 return (fs->flags & EXT2_FLAG_BB_DIRTY); 1638} 1639 1640/* 1641 * Return the group # of a block 1642 */ 1643_INLINE_ int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk) 1644{ 1645 return ext2fs_group_of_blk2(fs, blk); 1646} 1647/* 1648 * Return the group # of an inode number 1649 */ 1650_INLINE_ int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino) 1651{ 1652 return (ino - 1) / fs->super->s_inodes_per_group; 1653} 1654 1655/* 1656 * Return the first block (inclusive) in a group 1657 */ 1658_INLINE_ blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group) 1659{ 1660 return ext2fs_group_first_block2(fs, group); 1661} 1662 1663/* 1664 * Return the last block (inclusive) in a group 1665 */ 1666_INLINE_ blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group) 1667{ 1668 return ext2fs_group_last_block2(fs, group); 1669} 1670 1671_INLINE_ blk_t ext2fs_inode_data_blocks(ext2_filsys fs, 1672 struct ext2_inode *inode) 1673{ 1674 return ext2fs_inode_data_blocks2(fs, inode); 1675} 1676 1677/* 1678 * This is an efficient, overflow safe way of calculating ceil((1.0 * a) / b) 1679 */ 1680_INLINE_ unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b) 1681{ 1682 if (!a) 1683 return 0; 1684 return ((a - 1) / b) + 1; 1685} 1686 1687_INLINE_ __u64 ext2fs_div64_ceil(__u64 a, __u64 b) 1688{ 1689 if (!a) 1690 return 0; 1691 return ((a - 1) / b) + 1; 1692} 1693 1694_INLINE_ int ext2fs_open_file(const char *pathname, int flags, ...) 1695{ 1696 va_list args; 1697 mode_t mode; 1698 1699 va_start(args, flags); 1700 mode = va_arg(args, mode_t); 1701 va_end(args); 1702 1703 if (mode) 1704#if defined(HAVE_OPEN64) && !defined(__OSX_AVAILABLE_BUT_DEPRECATED) 1705 return open64(pathname, flags, mode); 1706 else 1707 return open64(pathname, flags); 1708#else 1709 return open(pathname, flags, mode); 1710 else 1711 return open(pathname, flags); 1712#endif 1713} 1714 1715_INLINE_ int ext2fs_stat(const char *path, ext2fs_struct_stat *buf) 1716{ 1717#if defined(HAVE_STAT64) && !defined(__OSX_AVAILABLE_BUT_DEPRECATED) 1718 return stat64(path, buf); 1719#else 1720 return stat(path, buf); 1721#endif 1722} 1723 1724_INLINE_ int ext2fs_fstat(int fd, ext2fs_struct_stat *buf) 1725{ 1726#if defined(HAVE_STAT64) && !defined(__OSX_AVAILABLE_BUT_DEPRECATED) 1727 return fstat64(fd, buf); 1728#else 1729 return fstat(fd, buf); 1730#endif 1731} 1732 1733#undef _INLINE_ 1734#endif 1735 1736#ifdef __cplusplus 1737} 1738#endif 1739 1740#endif /* _EXT2FS_EXT2FS_H */ 1741