ext2fs.h revision c859cb1de0d624caa0779fb17d1a53766143136e
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#define EXT2_MKJOURNAL_V1_SUPER 0x0000001 /* create V1 superblock (deprecated) */ 209#define EXT2_MKJOURNAL_LAZYINIT 0x0000002 /* don't zero journal inode before use*/ 210 211struct opaque_ext2_group_desc; 212 213struct struct_ext2_filsys { 214 errcode_t magic; 215 io_channel io; 216 int flags; 217 char * device_name; 218 struct ext2_super_block * super; 219 unsigned int blocksize; 220 int cluster_ratio_bits; 221 dgrp_t group_desc_count; 222 unsigned long desc_blocks; 223 struct opaque_ext2_group_desc * group_desc; 224 unsigned int inode_blocks_per_group; 225 ext2fs_inode_bitmap inode_map; 226 ext2fs_block_bitmap block_map; 227 /* XXX FIXME-64: not 64-bit safe, but not used? */ 228 errcode_t (*get_blocks)(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); 229 errcode_t (*check_directory)(ext2_filsys fs, ext2_ino_t ino); 230 errcode_t (*write_bitmaps)(ext2_filsys fs); 231 errcode_t (*read_inode)(ext2_filsys fs, ext2_ino_t ino, 232 struct ext2_inode *inode); 233 errcode_t (*write_inode)(ext2_filsys fs, ext2_ino_t ino, 234 struct ext2_inode *inode); 235 ext2_badblocks_list badblocks; 236 ext2_dblist dblist; 237 __u32 stride; /* for mke2fs */ 238 struct ext2_super_block * orig_super; 239 struct ext2_image_hdr * image_header; 240 __u32 umask; 241 time_t now; 242 /* 243 * Reserved for future expansion 244 */ 245 __u32 reserved[7]; 246 247 /* 248 * Reserved for the use of the calling application. 249 */ 250 void * priv_data; 251 252 /* 253 * Inode cache 254 */ 255 struct ext2_inode_cache *icache; 256 io_channel image_io; 257 258 /* 259 * More callback functions 260 */ 261 errcode_t (*get_alloc_block)(ext2_filsys fs, blk64_t goal, 262 blk64_t *ret); 263 void (*block_alloc_stats)(ext2_filsys fs, blk64_t blk, int inuse); 264}; 265 266#if EXT2_FLAT_INCLUDES 267#include "e2_bitops.h" 268#else 269#include <ext2fs/bitops.h> 270#endif 271 272/* 273 * Return flags for the block iterator functions 274 */ 275#define BLOCK_CHANGED 1 276#define BLOCK_ABORT 2 277#define BLOCK_ERROR 4 278 279/* 280 * Block interate flags 281 * 282 * BLOCK_FLAG_APPEND, or BLOCK_FLAG_HOLE, indicates that the interator 283 * function should be called on blocks where the block number is zero. 284 * This is used by ext2fs_expand_dir() to be able to add a new block 285 * to an inode. It can also be used for programs that want to be able 286 * to deal with files that contain "holes". 287 * 288 * BLOCK_FLAG_DEPTH_TRAVERSE indicates that the iterator function for 289 * the indirect, doubly indirect, etc. blocks should be called after 290 * all of the blocks containined in the indirect blocks are processed. 291 * This is useful if you are going to be deallocating blocks from an 292 * inode. 293 * 294 * BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be 295 * called for data blocks only. 296 * 297 * BLOCK_FLAG_READ_ONLY is a promise by the caller that it will not 298 * modify returned block number. 299 * 300 * BLOCK_FLAG_NO_LARGE is for internal use only. It informs 301 * ext2fs_block_iterate2 that large files won't be accepted. 302 */ 303#define BLOCK_FLAG_APPEND 1 304#define BLOCK_FLAG_HOLE 1 305#define BLOCK_FLAG_DEPTH_TRAVERSE 2 306#define BLOCK_FLAG_DATA_ONLY 4 307#define BLOCK_FLAG_READ_ONLY 8 308 309#define BLOCK_FLAG_NO_LARGE 0x1000 310 311/* 312 * Magic "block count" return values for the block iterator function. 313 */ 314#define BLOCK_COUNT_IND (-1) 315#define BLOCK_COUNT_DIND (-2) 316#define BLOCK_COUNT_TIND (-3) 317#define BLOCK_COUNT_TRANSLATOR (-4) 318 319#if 0 320/* 321 * Flags for ext2fs_move_blocks 322 */ 323#define EXT2_BMOVE_GET_DBLIST 0x0001 324#define EXT2_BMOVE_DEBUG 0x0002 325#endif 326 327/* 328 * Generic (non-filesystem layout specific) extents structure 329 */ 330 331#define EXT2_EXTENT_FLAGS_LEAF 0x0001 332#define EXT2_EXTENT_FLAGS_UNINIT 0x0002 333#define EXT2_EXTENT_FLAGS_SECOND_VISIT 0x0004 334 335struct ext2fs_extent { 336 blk64_t e_pblk; /* first physical block */ 337 blk64_t e_lblk; /* first logical block extent covers */ 338 __u32 e_len; /* number of blocks covered by extent */ 339 __u32 e_flags; /* extent flags */ 340}; 341 342typedef struct ext2_extent_handle *ext2_extent_handle_t; 343typedef struct ext2_extent_path *ext2_extent_path_t; 344 345/* 346 * Flags used by ext2fs_extent_get() 347 */ 348#define EXT2_EXTENT_CURRENT 0x0000 349#define EXT2_EXTENT_MOVE_MASK 0x000F 350#define EXT2_EXTENT_ROOT 0x0001 351#define EXT2_EXTENT_LAST_LEAF 0x0002 352#define EXT2_EXTENT_FIRST_SIB 0x0003 353#define EXT2_EXTENT_LAST_SIB 0x0004 354#define EXT2_EXTENT_NEXT_SIB 0x0005 355#define EXT2_EXTENT_PREV_SIB 0x0006 356#define EXT2_EXTENT_NEXT_LEAF 0x0007 357#define EXT2_EXTENT_PREV_LEAF 0x0008 358#define EXT2_EXTENT_NEXT 0x0009 359#define EXT2_EXTENT_PREV 0x000A 360#define EXT2_EXTENT_UP 0x000B 361#define EXT2_EXTENT_DOWN 0x000C 362#define EXT2_EXTENT_DOWN_AND_LAST 0x000D 363 364/* 365 * Flags used by ext2fs_extent_insert() 366 */ 367#define EXT2_EXTENT_INSERT_AFTER 0x0001 /* insert after handle loc'n */ 368#define EXT2_EXTENT_INSERT_NOSPLIT 0x0002 /* insert may not cause split */ 369 370/* 371 * Flags used by ext2fs_extent_delete() 372 */ 373#define EXT2_EXTENT_DELETE_KEEP_EMPTY 0x001 /* keep node if last extnt gone */ 374 375/* 376 * Flags used by ext2fs_extent_set_bmap() 377 */ 378#define EXT2_EXTENT_SET_BMAP_UNINIT 0x0001 379 380/* 381 * Data structure returned by ext2fs_extent_get_info() 382 */ 383struct ext2_extent_info { 384 int curr_entry; 385 int curr_level; 386 int num_entries; 387 int max_entries; 388 int max_depth; 389 int bytes_avail; 390 blk64_t max_lblk; 391 blk64_t max_pblk; 392 __u32 max_len; 393 __u32 max_uninit_len; 394}; 395 396/* 397 * Flags for directory block reading and writing functions 398 */ 399#define EXT2_DIRBLOCK_V2_STRUCT 0x0001 400 401/* 402 * Return flags for the directory iterator functions 403 */ 404#define DIRENT_CHANGED 1 405#define DIRENT_ABORT 2 406#define DIRENT_ERROR 3 407 408/* 409 * Directory iterator flags 410 */ 411 412#define DIRENT_FLAG_INCLUDE_EMPTY 1 413#define DIRENT_FLAG_INCLUDE_REMOVED 2 414 415#define DIRENT_DOT_FILE 1 416#define DIRENT_DOT_DOT_FILE 2 417#define DIRENT_OTHER_FILE 3 418#define DIRENT_DELETED_FILE 4 419 420/* 421 * Inode scan definitions 422 */ 423typedef struct ext2_struct_inode_scan *ext2_inode_scan; 424 425/* 426 * ext2fs_scan flags 427 */ 428#define EXT2_SF_CHK_BADBLOCKS 0x0001 429#define EXT2_SF_BAD_INODE_BLK 0x0002 430#define EXT2_SF_BAD_EXTRA_BYTES 0x0004 431#define EXT2_SF_SKIP_MISSING_ITABLE 0x0008 432#define EXT2_SF_DO_LAZY 0x0010 433 434/* 435 * ext2fs_check_if_mounted flags 436 */ 437#define EXT2_MF_MOUNTED 1 438#define EXT2_MF_ISROOT 2 439#define EXT2_MF_READONLY 4 440#define EXT2_MF_SWAP 8 441#define EXT2_MF_BUSY 16 442 443/* 444 * Ext2/linux mode flags. We define them here so that we don't need 445 * to depend on the OS's sys/stat.h, since we may be compiling on a 446 * non-Linux system. 447 */ 448#define LINUX_S_IFMT 00170000 449#define LINUX_S_IFSOCK 0140000 450#define LINUX_S_IFLNK 0120000 451#define LINUX_S_IFREG 0100000 452#define LINUX_S_IFBLK 0060000 453#define LINUX_S_IFDIR 0040000 454#define LINUX_S_IFCHR 0020000 455#define LINUX_S_IFIFO 0010000 456#define LINUX_S_ISUID 0004000 457#define LINUX_S_ISGID 0002000 458#define LINUX_S_ISVTX 0001000 459 460#define LINUX_S_IRWXU 00700 461#define LINUX_S_IRUSR 00400 462#define LINUX_S_IWUSR 00200 463#define LINUX_S_IXUSR 00100 464 465#define LINUX_S_IRWXG 00070 466#define LINUX_S_IRGRP 00040 467#define LINUX_S_IWGRP 00020 468#define LINUX_S_IXGRP 00010 469 470#define LINUX_S_IRWXO 00007 471#define LINUX_S_IROTH 00004 472#define LINUX_S_IWOTH 00002 473#define LINUX_S_IXOTH 00001 474 475#define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK) 476#define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG) 477#define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR) 478#define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR) 479#define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK) 480#define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO) 481#define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK) 482 483/* 484 * ext2 size of an inode 485 */ 486#define EXT2_I_SIZE(i) ((i)->i_size | ((__u64) (i)->i_size_high << 32)) 487 488/* 489 * ext2_icount_t abstraction 490 */ 491#define EXT2_ICOUNT_OPT_INCREMENT 0x01 492 493typedef struct ext2_icount *ext2_icount_t; 494 495/* 496 * Flags for ext2fs_bmap 497 */ 498#define BMAP_ALLOC 0x0001 499#define BMAP_SET 0x0002 500 501/* 502 * Returned flags from ext2fs_bmap 503 */ 504#define BMAP_RET_UNINIT 0x0001 505 506/* 507 * Flags for imager.c functions 508 */ 509#define IMAGER_FLAG_INODEMAP 1 510#define IMAGER_FLAG_SPARSEWRITE 2 511 512/* 513 * For checking structure magic numbers... 514 */ 515 516#define EXT2_CHECK_MAGIC(struct, code) \ 517 if ((struct)->magic != (code)) return (code) 518 519 520/* 521 * For ext2 compression support 522 */ 523#define EXT2FS_COMPRESSED_BLKADDR ((blk_t) -1) 524#define HOLE_BLKADDR(_b) ((_b) == 0 || (_b) == EXT2FS_COMPRESSED_BLKADDR) 525 526/* 527 * Features supported by this version of the library 528 */ 529#define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\ 530 EXT2_FEATURE_COMPAT_IMAGIC_INODES|\ 531 EXT3_FEATURE_COMPAT_HAS_JOURNAL|\ 532 EXT2_FEATURE_COMPAT_RESIZE_INODE|\ 533 EXT2_FEATURE_COMPAT_DIR_INDEX|\ 534 EXT2_FEATURE_COMPAT_EXT_ATTR) 535 536/* This #ifdef is temporary until compression is fully supported */ 537#ifdef ENABLE_COMPRESSION 538#ifndef I_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL 539/* If the below warning bugs you, then have 540 `CPPFLAGS=-DI_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL' in your 541 environment at configure time. */ 542 #warning "Compression support is experimental" 543#endif 544#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 545 EXT2_FEATURE_INCOMPAT_COMPRESSION|\ 546 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 547 EXT2_FEATURE_INCOMPAT_META_BG|\ 548 EXT3_FEATURE_INCOMPAT_RECOVER|\ 549 EXT3_FEATURE_INCOMPAT_EXTENTS|\ 550 EXT4_FEATURE_INCOMPAT_FLEX_BG|\ 551 EXT4_FEATURE_INCOMPAT_64BIT) 552#else 553#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 554 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 555 EXT2_FEATURE_INCOMPAT_META_BG|\ 556 EXT3_FEATURE_INCOMPAT_RECOVER|\ 557 EXT3_FEATURE_INCOMPAT_EXTENTS|\ 558 EXT4_FEATURE_INCOMPAT_FLEX_BG|\ 559 EXT4_FEATURE_INCOMPAT_64BIT) 560#endif 561#define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\ 562 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|\ 563 EXT2_FEATURE_RO_COMPAT_LARGE_FILE|\ 564 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|\ 565 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|\ 566 EXT4_FEATURE_RO_COMPAT_GDT_CSUM|\ 567 EXT4_FEATURE_RO_COMPAT_BIGALLOC|\ 568 EXT4_FEATURE_RO_COMPAT_QUOTA) 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#ifdef HAVE_OPEN64 589typedef struct stat64 ext2fs_struct_stat; 590#else 591typedef struct stat ext2fs_struct_stat; 592#endif 593 594/* 595 * function prototypes 596 */ 597 598/* alloc.c */ 599extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode, 600 ext2fs_inode_bitmap map, ext2_ino_t *ret); 601extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal, 602 ext2fs_block_bitmap map, blk_t *ret); 603extern errcode_t ext2fs_new_block2(ext2_filsys fs, blk64_t goal, 604 ext2fs_block_bitmap map, blk64_t *ret); 605extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start, 606 blk_t finish, int num, 607 ext2fs_block_bitmap map, 608 blk_t *ret); 609extern errcode_t ext2fs_get_free_blocks2(ext2_filsys fs, blk64_t start, 610 blk64_t finish, int num, 611 ext2fs_block_bitmap map, 612 blk64_t *ret); 613extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal, 614 char *block_buf, blk_t *ret); 615extern errcode_t ext2fs_alloc_block2(ext2_filsys fs, blk64_t goal, 616 char *block_buf, blk64_t *ret); 617extern void ext2fs_set_alloc_block_callback(ext2_filsys fs, 618 errcode_t (*func)(ext2_filsys fs, 619 blk64_t goal, 620 blk64_t *ret), 621 errcode_t (**old)(ext2_filsys fs, 622 blk64_t goal, 623 blk64_t *ret)); 624 625/* alloc_sb.c */ 626extern int ext2fs_reserve_super_and_bgd(ext2_filsys fs, 627 dgrp_t group, 628 ext2fs_block_bitmap bmap); 629extern void ext2fs_set_block_alloc_stats_callback(ext2_filsys fs, 630 void (*func)(ext2_filsys fs, 631 blk64_t blk, 632 int inuse), 633 void (**old)(ext2_filsys fs, 634 blk64_t blk, 635 int inuse)); 636 637/* alloc_stats.c */ 638void ext2fs_inode_alloc_stats(ext2_filsys fs, ext2_ino_t ino, int inuse); 639void ext2fs_inode_alloc_stats2(ext2_filsys fs, ext2_ino_t ino, 640 int inuse, int isdir); 641void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse); 642void ext2fs_block_alloc_stats2(ext2_filsys fs, blk64_t blk, int inuse); 643 644/* alloc_tables.c */ 645extern errcode_t ext2fs_allocate_tables(ext2_filsys fs); 646extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group, 647 ext2fs_block_bitmap bmap); 648 649/* badblocks.c */ 650extern errcode_t ext2fs_u32_list_create(ext2_u32_list *ret, int size); 651extern errcode_t ext2fs_u32_list_add(ext2_u32_list bb, __u32 blk); 652extern int ext2fs_u32_list_find(ext2_u32_list bb, __u32 blk); 653extern int ext2fs_u32_list_test(ext2_u32_list bb, blk_t blk); 654extern errcode_t ext2fs_u32_list_iterate_begin(ext2_u32_list bb, 655 ext2_u32_iterate *ret); 656extern int ext2fs_u32_list_iterate(ext2_u32_iterate iter, blk_t *blk); 657extern void ext2fs_u32_list_iterate_end(ext2_u32_iterate iter); 658extern errcode_t ext2fs_u32_copy(ext2_u32_list src, ext2_u32_list *dest); 659extern int ext2fs_u32_list_equal(ext2_u32_list bb1, ext2_u32_list bb2); 660 661extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret, 662 int size); 663extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb, 664 blk_t blk); 665extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb, 666 blk_t blk); 667extern int ext2fs_u32_list_del(ext2_u32_list bb, __u32 blk); 668extern void ext2fs_badblocks_list_del(ext2_u32_list bb, __u32 blk); 669extern errcode_t 670 ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb, 671 ext2_badblocks_iterate *ret); 672extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter, 673 blk_t *blk); 674extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter); 675extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src, 676 ext2_badblocks_list *dest); 677extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1, 678 ext2_badblocks_list bb2); 679extern int ext2fs_u32_list_count(ext2_u32_list bb); 680 681/* bb_compat */ 682extern errcode_t badblocks_list_create(badblocks_list *ret, int size); 683extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk); 684extern int badblocks_list_test(badblocks_list bb, blk_t blk); 685extern errcode_t badblocks_list_iterate_begin(badblocks_list bb, 686 badblocks_iterate *ret); 687extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk); 688extern void badblocks_list_iterate_end(badblocks_iterate iter); 689extern void badblocks_list_free(badblocks_list bb); 690 691/* bb_inode.c */ 692extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs, 693 ext2_badblocks_list bb_list); 694 695/* bitmaps.c */ 696extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap); 697extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap); 698extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src, 699 ext2fs_generic_bitmap *dest); 700extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs); 701extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs); 702extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs); 703extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs); 704extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs, 705 const char *descr, 706 ext2fs_block_bitmap *ret); 707extern errcode_t ext2fs_allocate_subcluster_bitmap(ext2_filsys fs, 708 const char *descr, 709 ext2fs_block_bitmap *ret); 710extern int ext2fs_get_bitmap_granularity(ext2fs_block_bitmap bitmap); 711extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs, 712 const char *descr, 713 ext2fs_inode_bitmap *ret); 714extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap, 715 ext2_ino_t end, ext2_ino_t *oend); 716extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap, 717 blk_t end, blk_t *oend); 718extern errcode_t ext2fs_fudge_block_bitmap_end2(ext2fs_block_bitmap bitmap, 719 blk64_t end, blk64_t *oend); 720extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap); 721extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap); 722extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs); 723extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs); 724extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end, 725 ext2fs_inode_bitmap bmap); 726extern errcode_t ext2fs_resize_inode_bitmap2(__u64 new_end, 727 __u64 new_real_end, 728 ext2fs_inode_bitmap bmap); 729extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end, 730 ext2fs_block_bitmap bmap); 731extern errcode_t ext2fs_resize_block_bitmap2(__u64 new_end, 732 __u64 new_real_end, 733 ext2fs_block_bitmap bmap); 734extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1, 735 ext2fs_block_bitmap bm2); 736extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1, 737 ext2fs_inode_bitmap bm2); 738extern errcode_t ext2fs_set_inode_bitmap_range(ext2fs_inode_bitmap bmap, 739 ext2_ino_t start, unsigned int num, 740 void *in); 741extern errcode_t ext2fs_set_inode_bitmap_range2(ext2fs_inode_bitmap bmap, 742 __u64 start, size_t num, 743 void *in); 744extern errcode_t ext2fs_get_inode_bitmap_range(ext2fs_inode_bitmap bmap, 745 ext2_ino_t start, unsigned int num, 746 void *out); 747extern errcode_t ext2fs_get_inode_bitmap_range2(ext2fs_inode_bitmap bmap, 748 __u64 start, size_t num, 749 void *out); 750extern errcode_t ext2fs_set_block_bitmap_range(ext2fs_block_bitmap bmap, 751 blk_t start, unsigned int num, 752 void *in); 753extern errcode_t ext2fs_set_block_bitmap_range2(ext2fs_block_bitmap bmap, 754 blk64_t start, size_t num, 755 void *in); 756extern errcode_t ext2fs_get_block_bitmap_range(ext2fs_block_bitmap bmap, 757 blk_t start, unsigned int num, 758 void *out); 759extern errcode_t ext2fs_get_block_bitmap_range2(ext2fs_block_bitmap bmap, 760 blk64_t start, size_t num, 761 void *out); 762 763/* blknum.c */ 764extern dgrp_t ext2fs_group_of_blk2(ext2_filsys fs, blk64_t); 765extern blk64_t ext2fs_group_first_block2(ext2_filsys fs, dgrp_t group); 766extern blk64_t ext2fs_group_last_block2(ext2_filsys fs, dgrp_t group); 767extern blk64_t ext2fs_inode_data_blocks2(ext2_filsys fs, 768 struct ext2_inode *inode); 769extern blk64_t ext2fs_inode_i_blocks(ext2_filsys fs, 770 struct ext2_inode *inode); 771extern blk64_t ext2fs_blocks_count(struct ext2_super_block *super); 772extern void ext2fs_blocks_count_set(struct ext2_super_block *super, 773 blk64_t blk); 774extern void ext2fs_blocks_count_add(struct ext2_super_block *super, 775 blk64_t blk); 776extern blk64_t ext2fs_r_blocks_count(struct ext2_super_block *super); 777extern void ext2fs_r_blocks_count_set(struct ext2_super_block *super, 778 blk64_t blk); 779extern void ext2fs_r_blocks_count_add(struct ext2_super_block *super, 780 blk64_t blk); 781extern blk64_t ext2fs_free_blocks_count(struct ext2_super_block *super); 782extern void ext2fs_free_blocks_count_set(struct ext2_super_block *super, 783 blk64_t blk); 784extern void ext2fs_free_blocks_count_add(struct ext2_super_block *super, 785 blk64_t blk); 786/* Block group descriptor accessor functions */ 787extern struct ext2_group_desc *ext2fs_group_desc(ext2_filsys fs, 788 struct opaque_ext2_group_desc *gdp, 789 dgrp_t group); 790extern blk64_t ext2fs_block_bitmap_loc(ext2_filsys fs, dgrp_t group); 791extern void ext2fs_block_bitmap_loc_set(ext2_filsys fs, dgrp_t group, 792 blk64_t blk); 793extern blk64_t ext2fs_inode_bitmap_loc(ext2_filsys fs, dgrp_t group); 794extern void ext2fs_inode_bitmap_loc_set(ext2_filsys fs, dgrp_t group, 795 blk64_t blk); 796extern blk64_t ext2fs_inode_table_loc(ext2_filsys fs, dgrp_t group); 797extern void ext2fs_inode_table_loc_set(ext2_filsys fs, dgrp_t group, 798 blk64_t blk); 799extern __u32 ext2fs_bg_free_blocks_count(ext2_filsys fs, dgrp_t group); 800extern void ext2fs_bg_free_blocks_count_set(ext2_filsys fs, dgrp_t group, 801 __u32 n); 802extern __u32 ext2fs_bg_free_inodes_count(ext2_filsys fs, dgrp_t group); 803extern void ext2fs_bg_free_inodes_count_set(ext2_filsys fs, dgrp_t group, 804 __u32 n); 805extern __u32 ext2fs_bg_used_dirs_count(ext2_filsys fs, dgrp_t group); 806extern void ext2fs_bg_used_dirs_count_set(ext2_filsys fs, dgrp_t group, 807 __u32 n); 808extern __u32 ext2fs_bg_itable_unused(ext2_filsys fs, dgrp_t group); 809extern void ext2fs_bg_itable_unused_set(ext2_filsys fs, dgrp_t group, 810 __u32 n); 811extern __u16 ext2fs_bg_flags(ext2_filsys fs, dgrp_t group); 812extern void ext2fs_bg_flags_zap(ext2_filsys fs, dgrp_t group); 813extern int ext2fs_bg_flags_test(ext2_filsys fs, dgrp_t group, __u16 bg_flag); 814extern void ext2fs_bg_flags_set(ext2_filsys fs, dgrp_t group, __u16 bg_flags); 815extern void ext2fs_bg_flags_clear(ext2_filsys fs, dgrp_t group, __u16 bg_flags); 816extern __u16 ext2fs_bg_checksum(ext2_filsys fs, dgrp_t group); 817extern void ext2fs_bg_checksum_set(ext2_filsys fs, dgrp_t group, __u16 checksum); 818extern blk64_t ext2fs_file_acl_block(const struct ext2_inode *inode); 819extern void ext2fs_file_acl_block_set(struct ext2_inode *inode, blk64_t blk); 820 821/* block.c */ 822extern errcode_t ext2fs_block_iterate(ext2_filsys fs, 823 ext2_ino_t ino, 824 int flags, 825 char *block_buf, 826 int (*func)(ext2_filsys fs, 827 blk_t *blocknr, 828 int blockcnt, 829 void *priv_data), 830 void *priv_data); 831errcode_t ext2fs_block_iterate2(ext2_filsys fs, 832 ext2_ino_t ino, 833 int flags, 834 char *block_buf, 835 int (*func)(ext2_filsys fs, 836 blk_t *blocknr, 837 e2_blkcnt_t blockcnt, 838 blk_t ref_blk, 839 int ref_offset, 840 void *priv_data), 841 void *priv_data); 842errcode_t ext2fs_block_iterate3(ext2_filsys fs, 843 ext2_ino_t ino, 844 int flags, 845 char *block_buf, 846 int (*func)(ext2_filsys fs, 847 blk64_t *blocknr, 848 e2_blkcnt_t blockcnt, 849 blk64_t ref_blk, 850 int ref_offset, 851 void *priv_data), 852 void *priv_data); 853 854/* bmap.c */ 855extern errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino, 856 struct ext2_inode *inode, 857 char *block_buf, int bmap_flags, 858 blk_t block, blk_t *phys_blk); 859extern errcode_t ext2fs_bmap2(ext2_filsys fs, ext2_ino_t ino, 860 struct ext2_inode *inode, 861 char *block_buf, int bmap_flags, blk64_t block, 862 int *ret_flags, blk64_t *phys_blk); 863 864#if 0 865/* bmove.c */ 866extern errcode_t ext2fs_move_blocks(ext2_filsys fs, 867 ext2fs_block_bitmap reserve, 868 ext2fs_block_bitmap alloc_map, 869 int flags); 870#endif 871 872/* check_desc.c */ 873extern errcode_t ext2fs_check_desc(ext2_filsys fs); 874 875/* closefs.c */ 876extern errcode_t ext2fs_close(ext2_filsys fs); 877extern errcode_t ext2fs_flush(ext2_filsys fs); 878extern int ext2fs_bg_has_super(ext2_filsys fs, int group_block); 879extern errcode_t ext2fs_super_and_bgd_loc2(ext2_filsys fs, 880 dgrp_t group, 881 blk64_t *ret_super_blk, 882 blk64_t *ret_old_desc_blk, 883 blk64_t *ret_new_desc_blk, 884 blk_t *ret_used_blks); 885extern int ext2fs_super_and_bgd_loc(ext2_filsys fs, 886 dgrp_t group, 887 blk_t *ret_super_blk, 888 blk_t *ret_old_desc_blk, 889 blk_t *ret_new_desc_blk, 890 int *ret_meta_bg); 891extern void ext2fs_update_dynamic_rev(ext2_filsys fs); 892 893/* crc32c.c */ 894extern __u32 crc32c_be(__u32 crc, unsigned char const *p, size_t len); 895extern __u32 crc32c_le(__u32 crc, unsigned char const *p, size_t len); 896 897/* csum.c */ 898extern void ext2fs_group_desc_csum_set(ext2_filsys fs, dgrp_t group); 899extern int ext2fs_group_desc_csum_verify(ext2_filsys fs, dgrp_t group); 900extern errcode_t ext2fs_set_gdt_csum(ext2_filsys fs); 901 902/* dblist.c */ 903 904extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs); 905extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist); 906extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ext2_ino_t ino, 907 blk_t blk, int blockcnt); 908extern errcode_t ext2fs_add_dir_block2(ext2_dblist dblist, ext2_ino_t ino, 909 blk64_t blk, e2_blkcnt_t blockcnt); 910extern void ext2fs_dblist_sort(ext2_dblist dblist, 911 EXT2_QSORT_TYPE (*sortfunc)(const void *, 912 const void *)); 913extern void ext2fs_dblist_sort2(ext2_dblist dblist, 914 EXT2_QSORT_TYPE (*sortfunc)(const void *, 915 const void *)); 916extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist, 917 int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info, 918 void *priv_data), 919 void *priv_data); 920extern errcode_t ext2fs_dblist_iterate2(ext2_dblist dblist, 921 int (*func)(ext2_filsys fs, struct ext2_db_entry2 *db_info, 922 void *priv_data), 923 void *priv_data); 924extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ext2_ino_t ino, 925 blk_t blk, int blockcnt); 926extern errcode_t ext2fs_set_dir_block2(ext2_dblist dblist, ext2_ino_t ino, 927 blk64_t blk, e2_blkcnt_t blockcnt); 928extern errcode_t ext2fs_copy_dblist(ext2_dblist src, 929 ext2_dblist *dest); 930extern int ext2fs_dblist_count(ext2_dblist dblist); 931extern blk64_t ext2fs_dblist_count2(ext2_dblist dblist); 932extern errcode_t ext2fs_dblist_get_last(ext2_dblist dblist, 933 struct ext2_db_entry **entry); 934extern errcode_t ext2fs_dblist_get_last2(ext2_dblist dblist, 935 struct ext2_db_entry2 **entry); 936extern errcode_t ext2fs_dblist_drop_last(ext2_dblist dblist); 937 938/* dblist_dir.c */ 939extern errcode_t 940 ext2fs_dblist_dir_iterate(ext2_dblist dblist, 941 int flags, 942 char *block_buf, 943 int (*func)(ext2_ino_t dir, 944 int entry, 945 struct ext2_dir_entry *dirent, 946 int offset, 947 int blocksize, 948 char *buf, 949 void *priv_data), 950 void *priv_data); 951 952/* dirblock.c */ 953extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block, 954 void *buf); 955extern errcode_t ext2fs_read_dir_block2(ext2_filsys fs, blk_t block, 956 void *buf, int flags); 957extern errcode_t ext2fs_read_dir_block3(ext2_filsys fs, blk64_t block, 958 void *buf, int flags); 959extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block, 960 void *buf); 961extern errcode_t ext2fs_write_dir_block2(ext2_filsys fs, blk_t block, 962 void *buf, int flags); 963extern errcode_t ext2fs_write_dir_block3(ext2_filsys fs, blk64_t block, 964 void *buf, int flags); 965 966/* dirhash.c */ 967extern errcode_t ext2fs_dirhash(int version, const char *name, int len, 968 const __u32 *seed, 969 ext2_dirhash_t *ret_hash, 970 ext2_dirhash_t *ret_minor_hash); 971 972 973/* dir_iterate.c */ 974extern errcode_t ext2fs_get_rec_len(ext2_filsys fs, 975 struct ext2_dir_entry *dirent, 976 unsigned int *rec_len); 977extern errcode_t ext2fs_set_rec_len(ext2_filsys fs, 978 unsigned int len, 979 struct ext2_dir_entry *dirent); 980extern errcode_t ext2fs_dir_iterate(ext2_filsys fs, 981 ext2_ino_t dir, 982 int flags, 983 char *block_buf, 984 int (*func)(struct ext2_dir_entry *dirent, 985 int offset, 986 int blocksize, 987 char *buf, 988 void *priv_data), 989 void *priv_data); 990extern errcode_t ext2fs_dir_iterate2(ext2_filsys fs, 991 ext2_ino_t dir, 992 int flags, 993 char *block_buf, 994 int (*func)(ext2_ino_t dir, 995 int entry, 996 struct ext2_dir_entry *dirent, 997 int offset, 998 int blocksize, 999 char *buf, 1000 void *priv_data), 1001 void *priv_data); 1002 1003/* dupfs.c */ 1004extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest); 1005 1006/* expanddir.c */ 1007extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir); 1008 1009/* ext_attr.c */ 1010extern __u32 ext2fs_ext_attr_hash_entry(struct ext2_ext_attr_entry *entry, 1011 void *data); 1012extern errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf); 1013extern errcode_t ext2fs_read_ext_attr2(ext2_filsys fs, blk64_t block, 1014 void *buf); 1015extern errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block, 1016 void *buf); 1017extern errcode_t ext2fs_write_ext_attr2(ext2_filsys fs, blk64_t block, 1018 void *buf); 1019extern errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk, 1020 char *block_buf, 1021 int adjust, __u32 *newcount); 1022extern errcode_t ext2fs_adjust_ea_refcount2(ext2_filsys fs, blk64_t blk, 1023 char *block_buf, 1024 int adjust, __u32 *newcount); 1025 1026/* extent.c */ 1027extern errcode_t ext2fs_extent_header_verify(void *ptr, int size); 1028extern errcode_t ext2fs_extent_open(ext2_filsys fs, ext2_ino_t ino, 1029 ext2_extent_handle_t *handle); 1030extern errcode_t ext2fs_extent_open2(ext2_filsys fs, ext2_ino_t ino, 1031 struct ext2_inode *inode, 1032 ext2_extent_handle_t *ret_handle); 1033extern void ext2fs_extent_free(ext2_extent_handle_t handle); 1034extern errcode_t ext2fs_extent_get(ext2_extent_handle_t handle, 1035 int flags, struct ext2fs_extent *extent); 1036extern errcode_t ext2fs_extent_replace(ext2_extent_handle_t handle, int flags, 1037 struct ext2fs_extent *extent); 1038extern errcode_t ext2fs_extent_insert(ext2_extent_handle_t handle, int flags, 1039 struct ext2fs_extent *extent); 1040extern errcode_t ext2fs_extent_set_bmap(ext2_extent_handle_t handle, 1041 blk64_t logical, blk64_t physical, 1042 int flags); 1043extern errcode_t ext2fs_extent_delete(ext2_extent_handle_t handle, int flags); 1044extern errcode_t ext2fs_extent_get_info(ext2_extent_handle_t handle, 1045 struct ext2_extent_info *info); 1046extern errcode_t ext2fs_extent_goto(ext2_extent_handle_t handle, 1047 blk64_t blk); 1048 1049/* fileio.c */ 1050extern errcode_t ext2fs_file_open2(ext2_filsys fs, ext2_ino_t ino, 1051 struct ext2_inode *inode, 1052 int flags, ext2_file_t *ret); 1053extern errcode_t ext2fs_file_open(ext2_filsys fs, ext2_ino_t ino, 1054 int flags, ext2_file_t *ret); 1055extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file); 1056struct ext2_inode *ext2fs_file_get_inode(ext2_file_t file); 1057extern errcode_t ext2fs_file_close(ext2_file_t file); 1058extern errcode_t ext2fs_file_flush(ext2_file_t file); 1059extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf, 1060 unsigned int wanted, unsigned int *got); 1061extern errcode_t ext2fs_file_write(ext2_file_t file, const void *buf, 1062 unsigned int nbytes, unsigned int *written); 1063extern errcode_t ext2fs_file_llseek(ext2_file_t file, __u64 offset, 1064 int whence, __u64 *ret_pos); 1065extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset, 1066 int whence, ext2_off_t *ret_pos); 1067errcode_t ext2fs_file_get_lsize(ext2_file_t file, __u64 *ret_size); 1068extern ext2_off_t ext2fs_file_get_size(ext2_file_t file); 1069extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size); 1070extern errcode_t ext2fs_file_set_size2(ext2_file_t file, ext2_off64_t size); 1071 1072/* finddev.c */ 1073extern char *ext2fs_find_block_device(dev_t device); 1074 1075/* flushb.c */ 1076extern errcode_t ext2fs_sync_device(int fd, int flushb); 1077 1078/* freefs.c */ 1079extern void ext2fs_free(ext2_filsys fs); 1080extern void ext2fs_free_dblist(ext2_dblist dblist); 1081extern void ext2fs_badblocks_list_free(ext2_badblocks_list bb); 1082extern void ext2fs_u32_list_free(ext2_u32_list bb); 1083 1084/* gen_bitmap.c */ 1085extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap); 1086extern errcode_t ext2fs_make_generic_bitmap(errcode_t magic, ext2_filsys fs, 1087 __u32 start, __u32 end, 1088 __u32 real_end, 1089 const char *descr, char *init_map, 1090 ext2fs_generic_bitmap *ret); 1091extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start, 1092 __u32 end, 1093 __u32 real_end, 1094 const char *descr, 1095 ext2fs_generic_bitmap *ret); 1096extern errcode_t ext2fs_copy_generic_bitmap(ext2fs_generic_bitmap src, 1097 ext2fs_generic_bitmap *dest); 1098extern void ext2fs_clear_generic_bitmap(ext2fs_generic_bitmap bitmap); 1099extern errcode_t ext2fs_fudge_generic_bitmap_end(ext2fs_inode_bitmap bitmap, 1100 errcode_t magic, 1101 errcode_t neq, 1102 ext2_ino_t end, 1103 ext2_ino_t *oend); 1104extern void ext2fs_set_generic_bitmap_padding(ext2fs_generic_bitmap map); 1105extern errcode_t ext2fs_resize_generic_bitmap(errcode_t magic, 1106 __u32 new_end, 1107 __u32 new_real_end, 1108 ext2fs_generic_bitmap bmap); 1109extern errcode_t ext2fs_compare_generic_bitmap(errcode_t magic, errcode_t neq, 1110 ext2fs_generic_bitmap bm1, 1111 ext2fs_generic_bitmap bm2); 1112extern errcode_t ext2fs_get_generic_bitmap_range(ext2fs_generic_bitmap bmap, 1113 errcode_t magic, 1114 __u32 start, __u32 num, 1115 void *out); 1116extern errcode_t ext2fs_set_generic_bitmap_range(ext2fs_generic_bitmap bmap, 1117 errcode_t magic, 1118 __u32 start, __u32 num, 1119 void *in); 1120 1121/* gen_bitmap64.c */ 1122void ext2fs_free_generic_bmap(ext2fs_generic_bitmap bmap); 1123errcode_t ext2fs_alloc_generic_bmap(ext2_filsys fs, errcode_t magic, 1124 int type, __u64 start, __u64 end, 1125 __u64 real_end, 1126 const char *descr, 1127 ext2fs_generic_bitmap *ret); 1128errcode_t ext2fs_copy_generic_bmap(ext2fs_generic_bitmap src, 1129 ext2fs_generic_bitmap *dest); 1130void ext2fs_clear_generic_bmap(ext2fs_generic_bitmap bitmap); 1131errcode_t ext2fs_fudge_generic_bmap_end(ext2fs_generic_bitmap bitmap, 1132 errcode_t neq, 1133 __u64 end, __u64 *oend); 1134void ext2fs_set_generic_bmap_padding(ext2fs_generic_bitmap bmap); 1135errcode_t ext2fs_resize_generic_bmap(ext2fs_generic_bitmap bmap, 1136 __u64 new_end, 1137 __u64 new_real_end); 1138errcode_t ext2fs_compare_generic_bmap(errcode_t neq, 1139 ext2fs_generic_bitmap bm1, 1140 ext2fs_generic_bitmap bm2); 1141errcode_t ext2fs_get_generic_bmap_range(ext2fs_generic_bitmap bmap, 1142 __u64 start, unsigned int num, 1143 void *out); 1144errcode_t ext2fs_set_generic_bmap_range(ext2fs_generic_bitmap bmap, 1145 __u64 start, unsigned int num, 1146 void *in); 1147errcode_t ext2fs_convert_subcluster_bitmap(ext2_filsys fs, 1148 ext2fs_block_bitmap *bitmap); 1149 1150/* getsize.c */ 1151extern errcode_t ext2fs_get_device_size(const char *file, int blocksize, 1152 blk_t *retblocks); 1153extern errcode_t ext2fs_get_device_size2(const char *file, int blocksize, 1154 blk64_t *retblocks); 1155 1156/* getsectsize.c */ 1157errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize); 1158errcode_t ext2fs_get_device_phys_sectsize(const char *file, int *sectsize); 1159 1160/* i_block.c */ 1161errcode_t ext2fs_iblk_add_blocks(ext2_filsys fs, struct ext2_inode *inode, 1162 blk64_t num_blocks); 1163errcode_t ext2fs_iblk_sub_blocks(ext2_filsys fs, struct ext2_inode *inode, 1164 blk64_t num_blocks); 1165errcode_t ext2fs_iblk_set(ext2_filsys fs, struct ext2_inode *inode, blk64_t b); 1166 1167/* imager.c */ 1168extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags); 1169extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags); 1170extern errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd, int flags); 1171extern errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd, int flags); 1172extern errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags); 1173extern errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags); 1174 1175/* ind_block.c */ 1176errcode_t ext2fs_read_ind_block(ext2_filsys fs, blk_t blk, void *buf); 1177errcode_t ext2fs_write_ind_block(ext2_filsys fs, blk_t blk, void *buf); 1178 1179/* initialize.c */ 1180extern errcode_t ext2fs_initialize(const char *name, int flags, 1181 struct ext2_super_block *param, 1182 io_manager manager, ext2_filsys *ret_fs); 1183 1184/* icount.c */ 1185extern void ext2fs_free_icount(ext2_icount_t icount); 1186extern errcode_t ext2fs_create_icount_tdb(ext2_filsys fs, char *tdb_dir, 1187 int flags, ext2_icount_t *ret); 1188extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags, 1189 unsigned int size, 1190 ext2_icount_t hint, ext2_icount_t *ret); 1191extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags, 1192 unsigned int size, 1193 ext2_icount_t *ret); 1194extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ext2_ino_t ino, 1195 __u16 *ret); 1196extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ext2_ino_t ino, 1197 __u16 *ret); 1198extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ext2_ino_t ino, 1199 __u16 *ret); 1200extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ext2_ino_t ino, 1201 __u16 count); 1202extern ext2_ino_t ext2fs_get_icount_size(ext2_icount_t icount); 1203errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *); 1204 1205/* inode.c */ 1206extern errcode_t ext2fs_flush_icache(ext2_filsys fs); 1207extern errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan, 1208 ext2_ino_t *ino, 1209 struct ext2_inode *inode, 1210 int bufsize); 1211extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks, 1212 ext2_inode_scan *ret_scan); 1213extern void ext2fs_close_inode_scan(ext2_inode_scan scan); 1214extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino, 1215 struct ext2_inode *inode); 1216extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan, 1217 int group); 1218extern void ext2fs_set_inode_callback 1219 (ext2_inode_scan scan, 1220 errcode_t (*done_group)(ext2_filsys fs, 1221 ext2_inode_scan scan, 1222 dgrp_t group, 1223 void * priv_data), 1224 void *done_group_data); 1225extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags, 1226 int clear_flags); 1227extern errcode_t ext2fs_read_inode_full(ext2_filsys fs, ext2_ino_t ino, 1228 struct ext2_inode * inode, 1229 int bufsize); 1230extern errcode_t ext2fs_read_inode (ext2_filsys fs, ext2_ino_t ino, 1231 struct ext2_inode * inode); 1232extern errcode_t ext2fs_write_inode_full(ext2_filsys fs, ext2_ino_t ino, 1233 struct ext2_inode * inode, 1234 int bufsize); 1235extern errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino, 1236 struct ext2_inode * inode); 1237extern errcode_t ext2fs_write_new_inode(ext2_filsys fs, ext2_ino_t ino, 1238 struct ext2_inode * inode); 1239extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); 1240extern errcode_t ext2fs_check_directory(ext2_filsys fs, ext2_ino_t ino); 1241 1242/* inode_io.c */ 1243extern io_manager inode_io_manager; 1244extern errcode_t ext2fs_inode_io_intern(ext2_filsys fs, ext2_ino_t ino, 1245 char **name); 1246extern errcode_t ext2fs_inode_io_intern2(ext2_filsys fs, ext2_ino_t ino, 1247 struct ext2_inode *inode, 1248 char **name); 1249 1250/* ismounted.c */ 1251extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags); 1252extern errcode_t ext2fs_check_mount_point(const char *device, int *mount_flags, 1253 char *mtpt, int mtlen); 1254 1255/* punch.c */ 1256extern errcode_t ext2fs_punch(ext2_filsys fs, ext2_ino_t ino, 1257 struct ext2_inode *inode, 1258 char *block_buf, blk64_t start, 1259 blk64_t end); 1260 1261/* namei.c */ 1262extern errcode_t ext2fs_lookup(ext2_filsys fs, ext2_ino_t dir, const char *name, 1263 int namelen, char *buf, ext2_ino_t *inode); 1264extern errcode_t ext2fs_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1265 const char *name, ext2_ino_t *inode); 1266errcode_t ext2fs_namei_follow(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1267 const char *name, ext2_ino_t *inode); 1268extern errcode_t ext2fs_follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1269 ext2_ino_t inode, ext2_ino_t *res_inode); 1270 1271/* native.c */ 1272int ext2fs_native_flag(void); 1273 1274/* newdir.c */ 1275extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino, 1276 ext2_ino_t parent_ino, char **block); 1277 1278/* mkdir.c */ 1279extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum, 1280 const char *name); 1281 1282/* mkjournal.c */ 1283extern errcode_t ext2fs_zero_blocks(ext2_filsys fs, blk_t blk, int num, 1284 blk_t *ret_blk, int *ret_count); 1285extern errcode_t ext2fs_zero_blocks2(ext2_filsys fs, blk64_t blk, int num, 1286 blk64_t *ret_blk, int *ret_count); 1287extern errcode_t ext2fs_create_journal_superblock(ext2_filsys fs, 1288 __u32 num_blocks, int flags, 1289 char **ret_jsb); 1290extern errcode_t ext2fs_add_journal_device(ext2_filsys fs, 1291 ext2_filsys journal_dev); 1292extern errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t num_blocks, 1293 int flags); 1294extern int ext2fs_default_journal_size(__u64 num_blocks); 1295 1296/* openfs.c */ 1297extern errcode_t ext2fs_open(const char *name, int flags, int superblock, 1298 unsigned int block_size, io_manager manager, 1299 ext2_filsys *ret_fs); 1300extern errcode_t ext2fs_open2(const char *name, const char *io_options, 1301 int flags, int superblock, 1302 unsigned int block_size, io_manager manager, 1303 ext2_filsys *ret_fs); 1304extern blk64_t ext2fs_descriptor_block_loc2(ext2_filsys fs, 1305 blk64_t group_block, dgrp_t i); 1306extern blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block, 1307 dgrp_t i); 1308errcode_t ext2fs_get_data_io(ext2_filsys fs, io_channel *old_io); 1309errcode_t ext2fs_set_data_io(ext2_filsys fs, io_channel new_io); 1310errcode_t ext2fs_rewrite_to_io(ext2_filsys fs, io_channel new_io); 1311 1312/* get_pathname.c */ 1313extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino, 1314 char **name); 1315 1316/* link.c */ 1317errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name, 1318 ext2_ino_t ino, int flags); 1319errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir, const char *name, 1320 ext2_ino_t ino, int flags); 1321 1322/* read_bb.c */ 1323extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs, 1324 ext2_badblocks_list *bb_list); 1325 1326/* read_bb_file.c */ 1327extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f, 1328 ext2_badblocks_list *bb_list, 1329 void *priv_data, 1330 void (*invalid)(ext2_filsys fs, 1331 blk_t blk, 1332 char *badstr, 1333 void *priv_data)); 1334extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f, 1335 ext2_badblocks_list *bb_list, 1336 void (*invalid)(ext2_filsys fs, 1337 blk_t blk)); 1338 1339/* res_gdt.c */ 1340extern errcode_t ext2fs_create_resize_inode(ext2_filsys fs); 1341 1342/* swapfs.c */ 1343extern void ext2fs_swap_ext_attr(char *to, char *from, int bufsize, 1344 int has_header); 1345extern void ext2fs_swap_ext_attr_header(struct ext2_ext_attr_header *to_header, 1346 struct ext2_ext_attr_header *from_hdr); 1347extern void ext2fs_swap_ext_attr_entry(struct ext2_ext_attr_entry *to_entry, 1348 struct ext2_ext_attr_entry *from_entry); 1349extern void ext2fs_swap_super(struct ext2_super_block * super); 1350extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp); 1351extern void ext2fs_swap_group_desc2(ext2_filsys, struct ext2_group_desc *gdp); 1352extern void ext2fs_swap_inode_full(ext2_filsys fs, struct ext2_inode_large *t, 1353 struct ext2_inode_large *f, int hostorder, 1354 int bufsize); 1355extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t, 1356 struct ext2_inode *f, int hostorder); 1357 1358/* valid_blk.c */ 1359extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode); 1360 1361/* version.c */ 1362extern int ext2fs_parse_version_string(const char *ver_string); 1363extern int ext2fs_get_library_version(const char **ver_string, 1364 const char **date_string); 1365 1366/* write_bb_file.c */ 1367extern errcode_t ext2fs_write_bb_FILE(ext2_badblocks_list bb_list, 1368 unsigned int flags, 1369 FILE *f); 1370 1371 1372/* inline functions */ 1373extern errcode_t ext2fs_get_mem(unsigned long size, void *ptr); 1374extern errcode_t ext2fs_get_memalign(unsigned long size, 1375 unsigned long align, void *ptr); 1376extern errcode_t ext2fs_get_memzero(unsigned long size, void *ptr); 1377extern errcode_t ext2fs_get_array(unsigned long count, 1378 unsigned long size, void *ptr); 1379extern errcode_t ext2fs_get_arrayzero(unsigned long count, 1380 unsigned long size, void *ptr); 1381extern errcode_t ext2fs_free_mem(void *ptr); 1382extern errcode_t ext2fs_resize_mem(unsigned long old_size, 1383 unsigned long size, void *ptr); 1384extern void ext2fs_mark_super_dirty(ext2_filsys fs); 1385extern void ext2fs_mark_changed(ext2_filsys fs); 1386extern int ext2fs_test_changed(ext2_filsys fs); 1387extern void ext2fs_mark_valid(ext2_filsys fs); 1388extern void ext2fs_unmark_valid(ext2_filsys fs); 1389extern int ext2fs_test_valid(ext2_filsys fs); 1390extern void ext2fs_mark_ib_dirty(ext2_filsys fs); 1391extern void ext2fs_mark_bb_dirty(ext2_filsys fs); 1392extern int ext2fs_test_ib_dirty(ext2_filsys fs); 1393extern int ext2fs_test_bb_dirty(ext2_filsys fs); 1394extern int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk); 1395extern int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino); 1396extern blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group); 1397extern blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group); 1398extern blk_t ext2fs_inode_data_blocks(ext2_filsys fs, 1399 struct ext2_inode *inode); 1400extern unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b); 1401extern __u64 ext2fs_div64_ceil(__u64 a, __u64 b); 1402extern int ext2fs_open_file(const char *pathname, int flags, ...); 1403extern int ext2fs_stat(const char *path, ext2fs_struct_stat *buf); 1404 1405/* 1406 * The actual inlined functions definitions themselves... 1407 * 1408 * If NO_INLINE_FUNCS is defined, then we won't try to do inline 1409 * functions at all! 1410 */ 1411#if (defined(INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS)) 1412#ifdef INCLUDE_INLINE_FUNCS 1413#define _INLINE_ extern 1414#else 1415#ifdef __GNUC__ 1416#define _INLINE_ extern __inline__ 1417#else /* For Watcom C */ 1418#define _INLINE_ extern inline 1419#endif 1420#endif 1421 1422#ifndef EXT2_CUSTOM_MEMORY_ROUTINES 1423#include <string.h> 1424/* 1425 * Allocate memory 1426 */ 1427_INLINE_ errcode_t ext2fs_get_mem(unsigned long size, void *ptr) 1428{ 1429 void *pp; 1430 1431 pp = malloc(size); 1432 if (!pp) 1433 return EXT2_ET_NO_MEMORY; 1434 memcpy(ptr, &pp, sizeof (pp)); 1435 return 0; 1436} 1437 1438_INLINE_ errcode_t ext2fs_get_memalign(unsigned long size, 1439 unsigned long align, void *ptr) 1440{ 1441 errcode_t retval; 1442 1443 if (align == 0) 1444 align = 8; 1445 retval = posix_memalign((void **) ptr, align, size); 1446 if (retval) { 1447 if (retval == ENOMEM) 1448 return EXT2_ET_NO_MEMORY; 1449 return retval; 1450 } 1451 return 0; 1452} 1453 1454_INLINE_ errcode_t ext2fs_get_memzero(unsigned long size, void *ptr) 1455{ 1456 void *pp; 1457 1458 pp = malloc(size); 1459 if (!pp) 1460 return EXT2_ET_NO_MEMORY; 1461 memset(pp, 0, size); 1462 memcpy(ptr, &pp, sizeof(pp)); 1463 return 0; 1464} 1465 1466_INLINE_ errcode_t ext2fs_get_array(unsigned long count, unsigned long size, void *ptr) 1467{ 1468 if (count && (-1UL)/count<size) 1469 return EXT2_ET_NO_MEMORY; 1470 return ext2fs_get_mem(count*size, ptr); 1471} 1472 1473_INLINE_ errcode_t ext2fs_get_arrayzero(unsigned long count, 1474 unsigned long size, void *ptr) 1475{ 1476 void *pp; 1477 1478 if (count && (-1UL)/count<size) 1479 return EXT2_ET_NO_MEMORY; 1480 pp = calloc(count, size); 1481 if (!pp) 1482 return EXT2_ET_NO_MEMORY; 1483 memcpy(ptr, &pp, sizeof(pp)); 1484 return 0; 1485} 1486 1487/* 1488 * Free memory 1489 */ 1490_INLINE_ errcode_t ext2fs_free_mem(void *ptr) 1491{ 1492 void *p; 1493 1494 memcpy(&p, ptr, sizeof(p)); 1495 free(p); 1496 p = 0; 1497 memcpy(ptr, &p, sizeof(p)); 1498 return 0; 1499} 1500 1501/* 1502 * Resize memory 1503 */ 1504_INLINE_ errcode_t ext2fs_resize_mem(unsigned long EXT2FS_ATTR((unused)) old_size, 1505 unsigned long size, void *ptr) 1506{ 1507 void *p; 1508 1509 /* Use "memcpy" for pointer assignments here to avoid problems 1510 * with C99 strict type aliasing rules. */ 1511 memcpy(&p, ptr, sizeof(p)); 1512 p = realloc(p, size); 1513 if (!p) 1514 return EXT2_ET_NO_MEMORY; 1515 memcpy(ptr, &p, sizeof(p)); 1516 return 0; 1517} 1518#endif /* Custom memory routines */ 1519 1520/* 1521 * Mark a filesystem superblock as dirty 1522 */ 1523_INLINE_ void ext2fs_mark_super_dirty(ext2_filsys fs) 1524{ 1525 fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_CHANGED; 1526} 1527 1528/* 1529 * Mark a filesystem as changed 1530 */ 1531_INLINE_ void ext2fs_mark_changed(ext2_filsys fs) 1532{ 1533 fs->flags |= EXT2_FLAG_CHANGED; 1534} 1535 1536/* 1537 * Check to see if a filesystem has changed 1538 */ 1539_INLINE_ int ext2fs_test_changed(ext2_filsys fs) 1540{ 1541 return (fs->flags & EXT2_FLAG_CHANGED); 1542} 1543 1544/* 1545 * Mark a filesystem as valid 1546 */ 1547_INLINE_ void ext2fs_mark_valid(ext2_filsys fs) 1548{ 1549 fs->flags |= EXT2_FLAG_VALID; 1550} 1551 1552/* 1553 * Mark a filesystem as NOT valid 1554 */ 1555_INLINE_ void ext2fs_unmark_valid(ext2_filsys fs) 1556{ 1557 fs->flags &= ~EXT2_FLAG_VALID; 1558} 1559 1560/* 1561 * Check to see if a filesystem is valid 1562 */ 1563_INLINE_ int ext2fs_test_valid(ext2_filsys fs) 1564{ 1565 return (fs->flags & EXT2_FLAG_VALID); 1566} 1567 1568/* 1569 * Mark the inode bitmap as dirty 1570 */ 1571_INLINE_ void ext2fs_mark_ib_dirty(ext2_filsys fs) 1572{ 1573 fs->flags |= EXT2_FLAG_IB_DIRTY | EXT2_FLAG_CHANGED; 1574} 1575 1576/* 1577 * Mark the block bitmap as dirty 1578 */ 1579_INLINE_ void ext2fs_mark_bb_dirty(ext2_filsys fs) 1580{ 1581 fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_CHANGED; 1582} 1583 1584/* 1585 * Check to see if a filesystem's inode bitmap is dirty 1586 */ 1587_INLINE_ int ext2fs_test_ib_dirty(ext2_filsys fs) 1588{ 1589 return (fs->flags & EXT2_FLAG_IB_DIRTY); 1590} 1591 1592/* 1593 * Check to see if a filesystem's block bitmap is dirty 1594 */ 1595_INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs) 1596{ 1597 return (fs->flags & EXT2_FLAG_BB_DIRTY); 1598} 1599 1600/* 1601 * Return the group # of a block 1602 */ 1603_INLINE_ int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk) 1604{ 1605 return ext2fs_group_of_blk2(fs, blk); 1606} 1607/* 1608 * Return the group # of an inode number 1609 */ 1610_INLINE_ int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino) 1611{ 1612 return (ino - 1) / fs->super->s_inodes_per_group; 1613} 1614 1615/* 1616 * Return the first block (inclusive) in a group 1617 */ 1618_INLINE_ blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group) 1619{ 1620 return ext2fs_group_first_block2(fs, group); 1621} 1622 1623/* 1624 * Return the last block (inclusive) in a group 1625 */ 1626_INLINE_ blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group) 1627{ 1628 return ext2fs_group_last_block2(fs, group); 1629} 1630 1631_INLINE_ blk_t ext2fs_inode_data_blocks(ext2_filsys fs, 1632 struct ext2_inode *inode) 1633{ 1634 return ext2fs_inode_data_blocks2(fs, inode); 1635} 1636 1637/* 1638 * This is an efficient, overflow safe way of calculating ceil((1.0 * a) / b) 1639 */ 1640_INLINE_ unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b) 1641{ 1642 if (!a) 1643 return 0; 1644 return ((a - 1) / b) + 1; 1645} 1646 1647_INLINE_ __u64 ext2fs_div64_ceil(__u64 a, __u64 b) 1648{ 1649 if (!a) 1650 return 0; 1651 return ((a - 1) / b) + 1; 1652} 1653 1654_INLINE_ int ext2fs_open_file(const char *pathname, int flags, ...) 1655{ 1656 va_list args; 1657 mode_t mode; 1658 1659 va_start(args, flags); 1660 mode = va_arg(args, mode_t); 1661 va_end(args); 1662 1663 if (mode) 1664#ifdef HAVE_OPEN64 1665 return open64(pathname, flags, mode); 1666 else 1667 return open64(pathname, flags); 1668#else 1669 return open(pathname, flags, mode); 1670 else 1671 return open(pathname, flags); 1672#endif 1673} 1674 1675_INLINE_ int ext2fs_stat(const char *path, ext2fs_struct_stat *buf) 1676{ 1677#ifdef HAVE_OPEN64 1678 return stat64(path, buf); 1679#else 1680 return open(path, buf); 1681#endif 1682} 1683 1684#undef _INLINE_ 1685#endif 1686 1687#ifdef __cplusplus 1688} 1689#endif 1690 1691#endif /* _EXT2FS_EXT2FS_H */ 1692