ext2fs.h revision 98f4547198b369bef7e41eb7ce4a16855726c393
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 fragsize; 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 int cluster_ratio_bits; 243 /* 244 * Reserved for future expansion 245 */ 246 __u32 reserved[6]; 247 248 /* 249 * Reserved for the use of the calling application. 250 */ 251 void * priv_data; 252 253 /* 254 * Inode cache 255 */ 256 struct ext2_inode_cache *icache; 257 io_channel image_io; 258 259 /* 260 * More callback functions 261 */ 262 errcode_t (*get_alloc_block)(ext2_filsys fs, blk64_t goal, 263 blk64_t *ret); 264 void (*block_alloc_stats)(ext2_filsys fs, blk64_t blk, int inuse); 265}; 266 267#if EXT2_FLAT_INCLUDES 268#include "e2_bitops.h" 269#else 270#include <ext2fs/bitops.h> 271#endif 272 273/* 274 * Return flags for the block iterator functions 275 */ 276#define BLOCK_CHANGED 1 277#define BLOCK_ABORT 2 278#define BLOCK_ERROR 4 279 280/* 281 * Block interate flags 282 * 283 * BLOCK_FLAG_APPEND, or BLOCK_FLAG_HOLE, indicates that the interator 284 * function should be called on blocks where the block number is zero. 285 * This is used by ext2fs_expand_dir() to be able to add a new block 286 * to an inode. It can also be used for programs that want to be able 287 * to deal with files that contain "holes". 288 * 289 * BLOCK_FLAG_DEPTH_TRAVERSE indicates that the iterator function for 290 * the indirect, doubly indirect, etc. blocks should be called after 291 * all of the blocks containined in the indirect blocks are processed. 292 * This is useful if you are going to be deallocating blocks from an 293 * inode. 294 * 295 * BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be 296 * called for data blocks only. 297 * 298 * BLOCK_FLAG_READ_ONLY is a promise by the caller that it will not 299 * modify returned block number. 300 * 301 * BLOCK_FLAG_NO_LARGE is for internal use only. It informs 302 * ext2fs_block_iterate2 that large files won't be accepted. 303 */ 304#define BLOCK_FLAG_APPEND 1 305#define BLOCK_FLAG_HOLE 1 306#define BLOCK_FLAG_DEPTH_TRAVERSE 2 307#define BLOCK_FLAG_DATA_ONLY 4 308#define BLOCK_FLAG_READ_ONLY 8 309 310#define BLOCK_FLAG_NO_LARGE 0x1000 311 312/* 313 * Magic "block count" return values for the block iterator function. 314 */ 315#define BLOCK_COUNT_IND (-1) 316#define BLOCK_COUNT_DIND (-2) 317#define BLOCK_COUNT_TIND (-3) 318#define BLOCK_COUNT_TRANSLATOR (-4) 319 320#if 0 321/* 322 * Flags for ext2fs_move_blocks 323 */ 324#define EXT2_BMOVE_GET_DBLIST 0x0001 325#define EXT2_BMOVE_DEBUG 0x0002 326#endif 327 328/* 329 * Generic (non-filesystem layout specific) extents structure 330 */ 331 332#define EXT2_EXTENT_FLAGS_LEAF 0x0001 333#define EXT2_EXTENT_FLAGS_UNINIT 0x0002 334#define EXT2_EXTENT_FLAGS_SECOND_VISIT 0x0004 335 336struct ext2fs_extent { 337 blk64_t e_pblk; /* first physical block */ 338 blk64_t e_lblk; /* first logical block extent covers */ 339 __u32 e_len; /* number of blocks covered by extent */ 340 __u32 e_flags; /* extent flags */ 341}; 342 343typedef struct ext2_extent_handle *ext2_extent_handle_t; 344typedef struct ext2_extent_path *ext2_extent_path_t; 345 346/* 347 * Flags used by ext2fs_extent_get() 348 */ 349#define EXT2_EXTENT_CURRENT 0x0000 350#define EXT2_EXTENT_MOVE_MASK 0x000F 351#define EXT2_EXTENT_ROOT 0x0001 352#define EXT2_EXTENT_LAST_LEAF 0x0002 353#define EXT2_EXTENT_FIRST_SIB 0x0003 354#define EXT2_EXTENT_LAST_SIB 0x0004 355#define EXT2_EXTENT_NEXT_SIB 0x0005 356#define EXT2_EXTENT_PREV_SIB 0x0006 357#define EXT2_EXTENT_NEXT_LEAF 0x0007 358#define EXT2_EXTENT_PREV_LEAF 0x0008 359#define EXT2_EXTENT_NEXT 0x0009 360#define EXT2_EXTENT_PREV 0x000A 361#define EXT2_EXTENT_UP 0x000B 362#define EXT2_EXTENT_DOWN 0x000C 363#define EXT2_EXTENT_DOWN_AND_LAST 0x000D 364 365/* 366 * Flags used by ext2fs_extent_insert() 367 */ 368#define EXT2_EXTENT_INSERT_AFTER 0x0001 /* insert after handle loc'n */ 369#define EXT2_EXTENT_INSERT_NOSPLIT 0x0002 /* insert may not cause split */ 370 371/* 372 * Flags used by ext2fs_extent_delete() 373 */ 374#define EXT2_EXTENT_DELETE_KEEP_EMPTY 0x001 /* keep node if last extnt gone */ 375 376/* 377 * Flags used by ext2fs_extent_set_bmap() 378 */ 379#define EXT2_EXTENT_SET_BMAP_UNINIT 0x0001 380 381/* 382 * Data structure returned by ext2fs_extent_get_info() 383 */ 384struct ext2_extent_info { 385 int curr_entry; 386 int curr_level; 387 int num_entries; 388 int max_entries; 389 int max_depth; 390 int bytes_avail; 391 blk64_t max_lblk; 392 blk64_t max_pblk; 393 __u32 max_len; 394 __u32 max_uninit_len; 395}; 396 397/* 398 * Flags for directory block reading and writing functions 399 */ 400#define EXT2_DIRBLOCK_V2_STRUCT 0x0001 401 402/* 403 * Return flags for the directory iterator functions 404 */ 405#define DIRENT_CHANGED 1 406#define DIRENT_ABORT 2 407#define DIRENT_ERROR 3 408 409/* 410 * Directory iterator flags 411 */ 412 413#define DIRENT_FLAG_INCLUDE_EMPTY 1 414#define DIRENT_FLAG_INCLUDE_REMOVED 2 415 416#define DIRENT_DOT_FILE 1 417#define DIRENT_DOT_DOT_FILE 2 418#define DIRENT_OTHER_FILE 3 419#define DIRENT_DELETED_FILE 4 420 421/* 422 * Inode scan definitions 423 */ 424typedef struct ext2_struct_inode_scan *ext2_inode_scan; 425 426/* 427 * ext2fs_scan flags 428 */ 429#define EXT2_SF_CHK_BADBLOCKS 0x0001 430#define EXT2_SF_BAD_INODE_BLK 0x0002 431#define EXT2_SF_BAD_EXTRA_BYTES 0x0004 432#define EXT2_SF_SKIP_MISSING_ITABLE 0x0008 433#define EXT2_SF_DO_LAZY 0x0010 434 435/* 436 * ext2fs_check_if_mounted flags 437 */ 438#define EXT2_MF_MOUNTED 1 439#define EXT2_MF_ISROOT 2 440#define EXT2_MF_READONLY 4 441#define EXT2_MF_SWAP 8 442#define EXT2_MF_BUSY 16 443 444/* 445 * Ext2/linux mode flags. We define them here so that we don't need 446 * to depend on the OS's sys/stat.h, since we may be compiling on a 447 * non-Linux system. 448 */ 449#define LINUX_S_IFMT 00170000 450#define LINUX_S_IFSOCK 0140000 451#define LINUX_S_IFLNK 0120000 452#define LINUX_S_IFREG 0100000 453#define LINUX_S_IFBLK 0060000 454#define LINUX_S_IFDIR 0040000 455#define LINUX_S_IFCHR 0020000 456#define LINUX_S_IFIFO 0010000 457#define LINUX_S_ISUID 0004000 458#define LINUX_S_ISGID 0002000 459#define LINUX_S_ISVTX 0001000 460 461#define LINUX_S_IRWXU 00700 462#define LINUX_S_IRUSR 00400 463#define LINUX_S_IWUSR 00200 464#define LINUX_S_IXUSR 00100 465 466#define LINUX_S_IRWXG 00070 467#define LINUX_S_IRGRP 00040 468#define LINUX_S_IWGRP 00020 469#define LINUX_S_IXGRP 00010 470 471#define LINUX_S_IRWXO 00007 472#define LINUX_S_IROTH 00004 473#define LINUX_S_IWOTH 00002 474#define LINUX_S_IXOTH 00001 475 476#define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK) 477#define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG) 478#define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR) 479#define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR) 480#define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK) 481#define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO) 482#define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK) 483 484/* 485 * ext2 size of an inode 486 */ 487#define EXT2_I_SIZE(i) ((i)->i_size | ((__u64) (i)->i_size_high << 32)) 488 489/* 490 * ext2_icount_t abstraction 491 */ 492#define EXT2_ICOUNT_OPT_INCREMENT 0x01 493 494typedef struct ext2_icount *ext2_icount_t; 495 496/* 497 * Flags for ext2fs_bmap 498 */ 499#define BMAP_ALLOC 0x0001 500#define BMAP_SET 0x0002 501 502/* 503 * Returned flags from ext2fs_bmap 504 */ 505#define BMAP_RET_UNINIT 0x0001 506 507/* 508 * Flags for imager.c functions 509 */ 510#define IMAGER_FLAG_INODEMAP 1 511#define IMAGER_FLAG_SPARSEWRITE 2 512 513/* 514 * For checking structure magic numbers... 515 */ 516 517#define EXT2_CHECK_MAGIC(struct, code) \ 518 if ((struct)->magic != (code)) return (code) 519 520 521/* 522 * For ext2 compression support 523 */ 524#define EXT2FS_COMPRESSED_BLKADDR ((blk_t) -1) 525#define HOLE_BLKADDR(_b) ((_b) == 0 || (_b) == EXT2FS_COMPRESSED_BLKADDR) 526 527/* 528 * Features supported by this version of the library 529 */ 530#define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\ 531 EXT2_FEATURE_COMPAT_IMAGIC_INODES|\ 532 EXT3_FEATURE_COMPAT_HAS_JOURNAL|\ 533 EXT2_FEATURE_COMPAT_RESIZE_INODE|\ 534 EXT2_FEATURE_COMPAT_DIR_INDEX|\ 535 EXT2_FEATURE_COMPAT_EXT_ATTR) 536 537/* This #ifdef is temporary until compression is fully supported */ 538#ifdef ENABLE_COMPRESSION 539#ifndef I_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL 540/* If the below warning bugs you, then have 541 `CPPFLAGS=-DI_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL' in your 542 environment at configure time. */ 543 #warning "Compression support is experimental" 544#endif 545#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 546 EXT2_FEATURE_INCOMPAT_COMPRESSION|\ 547 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 548 EXT2_FEATURE_INCOMPAT_META_BG|\ 549 EXT3_FEATURE_INCOMPAT_RECOVER|\ 550 EXT3_FEATURE_INCOMPAT_EXTENTS|\ 551 EXT4_FEATURE_INCOMPAT_FLEX_BG|\ 552 EXT4_FEATURE_INCOMPAT_64BIT) 553#else 554#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 555 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 556 EXT2_FEATURE_INCOMPAT_META_BG|\ 557 EXT3_FEATURE_INCOMPAT_RECOVER|\ 558 EXT3_FEATURE_INCOMPAT_EXTENTS|\ 559 EXT4_FEATURE_INCOMPAT_FLEX_BG|\ 560 EXT4_FEATURE_INCOMPAT_64BIT) 561#endif 562#define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\ 563 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|\ 564 EXT2_FEATURE_RO_COMPAT_LARGE_FILE|\ 565 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|\ 566 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|\ 567 EXT4_FEATURE_RO_COMPAT_GDT_CSUM|\ 568 EXT4_FEATURE_RO_COMPAT_BIGALLOC|\ 569 EXT4_FEATURE_RO_COMPAT_QUOTA) 570 571/* 572 * These features are only allowed if EXT2_FLAG_SOFTSUPP_FEATURES is passed 573 * to ext2fs_openfs() 574 */ 575#define EXT2_LIB_SOFTSUPP_INCOMPAT (0) 576#define EXT2_LIB_SOFTSUPP_RO_COMPAT (EXT4_FEATURE_RO_COMPAT_BIGALLOC) 577 578 579/* Translate a block number to a cluster number */ 580#define EXT2FS_CLUSTER_RATIO(fs) (1 << (fs)->cluster_ratio_bits) 581#define EXT2FS_CLUSTER_MASK(fs) (EXT2FS_CLUSTER_RATIO(fs) - 1) 582#define EXT2FS_B2C(fs, blk) ((blk) >> (fs)->cluster_ratio_bits) 583/* Translate a cluster number to a block number */ 584#define EXT2FS_C2B(fs, cluster) ((cluster) << (fs)->cluster_ratio_bits) 585/* Translate # of blks to # of clusters */ 586#define EXT2FS_NUM_B2C(fs, blks) (((blks) + EXT2FS_CLUSTER_MASK(fs)) >> \ 587 (fs)->cluster_ratio_bits) 588 589#ifdef HAVE_OPEN64 590typedef struct stat64 ext2fs_struct_stat; 591#else 592typedef struct stat ext2fs_struct_stat; 593#endif 594 595/* 596 * function prototypes 597 */ 598 599/* alloc.c */ 600extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode, 601 ext2fs_inode_bitmap map, ext2_ino_t *ret); 602extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal, 603 ext2fs_block_bitmap map, blk_t *ret); 604extern errcode_t ext2fs_new_block2(ext2_filsys fs, blk64_t goal, 605 ext2fs_block_bitmap map, blk64_t *ret); 606extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start, 607 blk_t finish, int num, 608 ext2fs_block_bitmap map, 609 blk_t *ret); 610extern errcode_t ext2fs_get_free_blocks2(ext2_filsys fs, blk64_t start, 611 blk64_t finish, int num, 612 ext2fs_block_bitmap map, 613 blk64_t *ret); 614extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal, 615 char *block_buf, blk_t *ret); 616extern errcode_t ext2fs_alloc_block2(ext2_filsys fs, blk64_t goal, 617 char *block_buf, blk64_t *ret); 618extern void ext2fs_set_alloc_block_callback(ext2_filsys fs, 619 errcode_t (*func)(ext2_filsys fs, 620 blk64_t goal, 621 blk64_t *ret), 622 errcode_t (**old)(ext2_filsys fs, 623 blk64_t goal, 624 blk64_t *ret)); 625 626/* alloc_sb.c */ 627extern int ext2fs_reserve_super_and_bgd(ext2_filsys fs, 628 dgrp_t group, 629 ext2fs_block_bitmap bmap); 630extern void ext2fs_set_block_alloc_stats_callback(ext2_filsys fs, 631 void (*func)(ext2_filsys fs, 632 blk64_t blk, 633 int inuse), 634 void (**old)(ext2_filsys fs, 635 blk64_t blk, 636 int inuse)); 637 638/* alloc_stats.c */ 639void ext2fs_inode_alloc_stats(ext2_filsys fs, ext2_ino_t ino, int inuse); 640void ext2fs_inode_alloc_stats2(ext2_filsys fs, ext2_ino_t ino, 641 int inuse, int isdir); 642void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse); 643void ext2fs_block_alloc_stats2(ext2_filsys fs, blk64_t blk, int inuse); 644 645/* alloc_tables.c */ 646extern errcode_t ext2fs_allocate_tables(ext2_filsys fs); 647extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group, 648 ext2fs_block_bitmap bmap); 649 650/* badblocks.c */ 651extern errcode_t ext2fs_u32_list_create(ext2_u32_list *ret, int size); 652extern errcode_t ext2fs_u32_list_add(ext2_u32_list bb, __u32 blk); 653extern int ext2fs_u32_list_find(ext2_u32_list bb, __u32 blk); 654extern int ext2fs_u32_list_test(ext2_u32_list bb, blk_t blk); 655extern errcode_t ext2fs_u32_list_iterate_begin(ext2_u32_list bb, 656 ext2_u32_iterate *ret); 657extern int ext2fs_u32_list_iterate(ext2_u32_iterate iter, blk_t *blk); 658extern void ext2fs_u32_list_iterate_end(ext2_u32_iterate iter); 659extern errcode_t ext2fs_u32_copy(ext2_u32_list src, ext2_u32_list *dest); 660extern int ext2fs_u32_list_equal(ext2_u32_list bb1, ext2_u32_list bb2); 661 662extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret, 663 int size); 664extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb, 665 blk_t blk); 666extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb, 667 blk_t blk); 668extern int ext2fs_u32_list_del(ext2_u32_list bb, __u32 blk); 669extern void ext2fs_badblocks_list_del(ext2_u32_list bb, __u32 blk); 670extern errcode_t 671 ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb, 672 ext2_badblocks_iterate *ret); 673extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter, 674 blk_t *blk); 675extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter); 676extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src, 677 ext2_badblocks_list *dest); 678extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1, 679 ext2_badblocks_list bb2); 680extern int ext2fs_u32_list_count(ext2_u32_list bb); 681 682/* bb_compat */ 683extern errcode_t badblocks_list_create(badblocks_list *ret, int size); 684extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk); 685extern int badblocks_list_test(badblocks_list bb, blk_t blk); 686extern errcode_t badblocks_list_iterate_begin(badblocks_list bb, 687 badblocks_iterate *ret); 688extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk); 689extern void badblocks_list_iterate_end(badblocks_iterate iter); 690extern void badblocks_list_free(badblocks_list bb); 691 692/* bb_inode.c */ 693extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs, 694 ext2_badblocks_list bb_list); 695 696/* bitmaps.c */ 697extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap); 698extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap); 699extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src, 700 ext2fs_generic_bitmap *dest); 701extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs); 702extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs); 703extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs); 704extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs); 705extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs, 706 const char *descr, 707 ext2fs_block_bitmap *ret); 708extern errcode_t ext2fs_allocate_subcluster_bitmap(ext2_filsys fs, 709 const char *descr, 710 ext2fs_block_bitmap *ret); 711extern int ext2fs_get_bitmap_granularity(ext2fs_block_bitmap bitmap); 712extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs, 713 const char *descr, 714 ext2fs_inode_bitmap *ret); 715extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap, 716 ext2_ino_t end, ext2_ino_t *oend); 717extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap, 718 blk_t end, blk_t *oend); 719extern errcode_t ext2fs_fudge_block_bitmap_end2(ext2fs_block_bitmap bitmap, 720 blk64_t end, blk64_t *oend); 721extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap); 722extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap); 723extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs); 724extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs); 725extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end, 726 ext2fs_inode_bitmap bmap); 727extern errcode_t ext2fs_resize_inode_bitmap2(__u64 new_end, 728 __u64 new_real_end, 729 ext2fs_inode_bitmap bmap); 730extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end, 731 ext2fs_block_bitmap bmap); 732extern errcode_t ext2fs_resize_block_bitmap2(__u64 new_end, 733 __u64 new_real_end, 734 ext2fs_block_bitmap bmap); 735extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1, 736 ext2fs_block_bitmap bm2); 737extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1, 738 ext2fs_inode_bitmap bm2); 739extern errcode_t ext2fs_set_inode_bitmap_range(ext2fs_inode_bitmap bmap, 740 ext2_ino_t start, unsigned int num, 741 void *in); 742extern errcode_t ext2fs_set_inode_bitmap_range2(ext2fs_inode_bitmap bmap, 743 __u64 start, size_t num, 744 void *in); 745extern errcode_t ext2fs_get_inode_bitmap_range(ext2fs_inode_bitmap bmap, 746 ext2_ino_t start, unsigned int num, 747 void *out); 748extern errcode_t ext2fs_get_inode_bitmap_range2(ext2fs_inode_bitmap bmap, 749 __u64 start, size_t num, 750 void *out); 751extern errcode_t ext2fs_set_block_bitmap_range(ext2fs_block_bitmap bmap, 752 blk_t start, unsigned int num, 753 void *in); 754extern errcode_t ext2fs_set_block_bitmap_range2(ext2fs_block_bitmap bmap, 755 blk64_t start, size_t num, 756 void *in); 757extern errcode_t ext2fs_get_block_bitmap_range(ext2fs_block_bitmap bmap, 758 blk_t start, unsigned int num, 759 void *out); 760extern errcode_t ext2fs_get_block_bitmap_range2(ext2fs_block_bitmap bmap, 761 blk64_t start, size_t num, 762 void *out); 763 764/* blknum.c */ 765extern dgrp_t ext2fs_group_of_blk2(ext2_filsys fs, blk64_t); 766extern blk64_t ext2fs_group_first_block2(ext2_filsys fs, dgrp_t group); 767extern blk64_t ext2fs_group_last_block2(ext2_filsys fs, dgrp_t group); 768extern int ext2fs_group_blocks_count(ext2_filsys fs, dgrp_t group); 769extern blk64_t ext2fs_inode_data_blocks2(ext2_filsys fs, 770 struct ext2_inode *inode); 771extern blk64_t ext2fs_inode_i_blocks(ext2_filsys fs, 772 struct ext2_inode *inode); 773extern blk64_t ext2fs_blocks_count(struct ext2_super_block *super); 774extern void ext2fs_blocks_count_set(struct ext2_super_block *super, 775 blk64_t blk); 776extern void ext2fs_blocks_count_add(struct ext2_super_block *super, 777 blk64_t blk); 778extern blk64_t ext2fs_r_blocks_count(struct ext2_super_block *super); 779extern void ext2fs_r_blocks_count_set(struct ext2_super_block *super, 780 blk64_t blk); 781extern void ext2fs_r_blocks_count_add(struct ext2_super_block *super, 782 blk64_t blk); 783extern blk64_t ext2fs_free_blocks_count(struct ext2_super_block *super); 784extern void ext2fs_free_blocks_count_set(struct ext2_super_block *super, 785 blk64_t blk); 786extern void ext2fs_free_blocks_count_add(struct ext2_super_block *super, 787 blk64_t blk); 788/* Block group descriptor accessor functions */ 789extern struct ext2_group_desc *ext2fs_group_desc(ext2_filsys fs, 790 struct opaque_ext2_group_desc *gdp, 791 dgrp_t group); 792extern blk64_t ext2fs_block_bitmap_loc(ext2_filsys fs, dgrp_t group); 793extern void ext2fs_block_bitmap_loc_set(ext2_filsys fs, dgrp_t group, 794 blk64_t blk); 795extern blk64_t ext2fs_inode_bitmap_loc(ext2_filsys fs, dgrp_t group); 796extern void ext2fs_inode_bitmap_loc_set(ext2_filsys fs, dgrp_t group, 797 blk64_t blk); 798extern blk64_t ext2fs_inode_table_loc(ext2_filsys fs, dgrp_t group); 799extern void ext2fs_inode_table_loc_set(ext2_filsys fs, dgrp_t group, 800 blk64_t blk); 801extern __u32 ext2fs_bg_free_blocks_count(ext2_filsys fs, dgrp_t group); 802extern void ext2fs_bg_free_blocks_count_set(ext2_filsys fs, dgrp_t group, 803 __u32 n); 804extern __u32 ext2fs_bg_free_inodes_count(ext2_filsys fs, dgrp_t group); 805extern void ext2fs_bg_free_inodes_count_set(ext2_filsys fs, dgrp_t group, 806 __u32 n); 807extern __u32 ext2fs_bg_used_dirs_count(ext2_filsys fs, dgrp_t group); 808extern void ext2fs_bg_used_dirs_count_set(ext2_filsys fs, dgrp_t group, 809 __u32 n); 810extern __u32 ext2fs_bg_itable_unused(ext2_filsys fs, dgrp_t group); 811extern void ext2fs_bg_itable_unused_set(ext2_filsys fs, dgrp_t group, 812 __u32 n); 813extern __u16 ext2fs_bg_flags(ext2_filsys fs, dgrp_t group); 814extern void ext2fs_bg_flags_zap(ext2_filsys fs, dgrp_t group); 815extern int ext2fs_bg_flags_test(ext2_filsys fs, dgrp_t group, __u16 bg_flag); 816extern void ext2fs_bg_flags_set(ext2_filsys fs, dgrp_t group, __u16 bg_flags); 817extern void ext2fs_bg_flags_clear(ext2_filsys fs, dgrp_t group, __u16 bg_flags); 818extern __u16 ext2fs_bg_checksum(ext2_filsys fs, dgrp_t group); 819extern void ext2fs_bg_checksum_set(ext2_filsys fs, dgrp_t group, __u16 checksum); 820extern blk64_t ext2fs_file_acl_block(const struct ext2_inode *inode); 821extern void ext2fs_file_acl_block_set(struct ext2_inode *inode, blk64_t blk); 822 823/* block.c */ 824extern errcode_t ext2fs_block_iterate(ext2_filsys fs, 825 ext2_ino_t ino, 826 int flags, 827 char *block_buf, 828 int (*func)(ext2_filsys fs, 829 blk_t *blocknr, 830 int blockcnt, 831 void *priv_data), 832 void *priv_data); 833errcode_t ext2fs_block_iterate2(ext2_filsys fs, 834 ext2_ino_t ino, 835 int flags, 836 char *block_buf, 837 int (*func)(ext2_filsys fs, 838 blk_t *blocknr, 839 e2_blkcnt_t blockcnt, 840 blk_t ref_blk, 841 int ref_offset, 842 void *priv_data), 843 void *priv_data); 844errcode_t ext2fs_block_iterate3(ext2_filsys fs, 845 ext2_ino_t ino, 846 int flags, 847 char *block_buf, 848 int (*func)(ext2_filsys fs, 849 blk64_t *blocknr, 850 e2_blkcnt_t blockcnt, 851 blk64_t ref_blk, 852 int ref_offset, 853 void *priv_data), 854 void *priv_data); 855 856/* bmap.c */ 857extern errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino, 858 struct ext2_inode *inode, 859 char *block_buf, int bmap_flags, 860 blk_t block, blk_t *phys_blk); 861extern errcode_t ext2fs_bmap2(ext2_filsys fs, ext2_ino_t ino, 862 struct ext2_inode *inode, 863 char *block_buf, int bmap_flags, blk64_t block, 864 int *ret_flags, blk64_t *phys_blk); 865 866#if 0 867/* bmove.c */ 868extern errcode_t ext2fs_move_blocks(ext2_filsys fs, 869 ext2fs_block_bitmap reserve, 870 ext2fs_block_bitmap alloc_map, 871 int flags); 872#endif 873 874/* check_desc.c */ 875extern errcode_t ext2fs_check_desc(ext2_filsys fs); 876 877/* closefs.c */ 878extern errcode_t ext2fs_close(ext2_filsys fs); 879extern errcode_t ext2fs_flush(ext2_filsys fs); 880extern int ext2fs_bg_has_super(ext2_filsys fs, int group_block); 881extern errcode_t ext2fs_super_and_bgd_loc2(ext2_filsys fs, 882 dgrp_t group, 883 blk64_t *ret_super_blk, 884 blk64_t *ret_old_desc_blk, 885 blk64_t *ret_new_desc_blk, 886 blk_t *ret_used_blks); 887extern int ext2fs_super_and_bgd_loc(ext2_filsys fs, 888 dgrp_t group, 889 blk_t *ret_super_blk, 890 blk_t *ret_old_desc_blk, 891 blk_t *ret_new_desc_blk, 892 int *ret_meta_bg); 893extern void ext2fs_update_dynamic_rev(ext2_filsys fs); 894 895/* crc32c.c */ 896extern __u32 crc32c_be(__u32 crc, unsigned char const *p, size_t len); 897extern __u32 crc32c_le(__u32 crc, unsigned char const *p, size_t len); 898 899/* csum.c */ 900extern void ext2fs_group_desc_csum_set(ext2_filsys fs, dgrp_t group); 901extern int ext2fs_group_desc_csum_verify(ext2_filsys fs, dgrp_t group); 902extern errcode_t ext2fs_set_gdt_csum(ext2_filsys fs); 903 904/* dblist.c */ 905 906extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs); 907extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist); 908extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ext2_ino_t ino, 909 blk_t blk, int blockcnt); 910extern errcode_t ext2fs_add_dir_block2(ext2_dblist dblist, ext2_ino_t ino, 911 blk64_t blk, e2_blkcnt_t blockcnt); 912extern void ext2fs_dblist_sort(ext2_dblist dblist, 913 EXT2_QSORT_TYPE (*sortfunc)(const void *, 914 const void *)); 915extern void ext2fs_dblist_sort2(ext2_dblist dblist, 916 EXT2_QSORT_TYPE (*sortfunc)(const void *, 917 const void *)); 918extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist, 919 int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info, 920 void *priv_data), 921 void *priv_data); 922extern errcode_t ext2fs_dblist_iterate2(ext2_dblist dblist, 923 int (*func)(ext2_filsys fs, struct ext2_db_entry2 *db_info, 924 void *priv_data), 925 void *priv_data); 926extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ext2_ino_t ino, 927 blk_t blk, int blockcnt); 928extern errcode_t ext2fs_set_dir_block2(ext2_dblist dblist, ext2_ino_t ino, 929 blk64_t blk, e2_blkcnt_t blockcnt); 930extern errcode_t ext2fs_copy_dblist(ext2_dblist src, 931 ext2_dblist *dest); 932extern int ext2fs_dblist_count(ext2_dblist dblist); 933extern blk64_t ext2fs_dblist_count2(ext2_dblist dblist); 934extern errcode_t ext2fs_dblist_get_last(ext2_dblist dblist, 935 struct ext2_db_entry **entry); 936extern errcode_t ext2fs_dblist_get_last2(ext2_dblist dblist, 937 struct ext2_db_entry2 **entry); 938extern errcode_t ext2fs_dblist_drop_last(ext2_dblist dblist); 939 940/* dblist_dir.c */ 941extern errcode_t 942 ext2fs_dblist_dir_iterate(ext2_dblist dblist, 943 int flags, 944 char *block_buf, 945 int (*func)(ext2_ino_t dir, 946 int entry, 947 struct ext2_dir_entry *dirent, 948 int offset, 949 int blocksize, 950 char *buf, 951 void *priv_data), 952 void *priv_data); 953 954/* dirblock.c */ 955extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block, 956 void *buf); 957extern errcode_t ext2fs_read_dir_block2(ext2_filsys fs, blk_t block, 958 void *buf, int flags); 959extern errcode_t ext2fs_read_dir_block3(ext2_filsys fs, blk64_t block, 960 void *buf, int flags); 961extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block, 962 void *buf); 963extern errcode_t ext2fs_write_dir_block2(ext2_filsys fs, blk_t block, 964 void *buf, int flags); 965extern errcode_t ext2fs_write_dir_block3(ext2_filsys fs, blk64_t block, 966 void *buf, int flags); 967 968/* dirhash.c */ 969extern errcode_t ext2fs_dirhash(int version, const char *name, int len, 970 const __u32 *seed, 971 ext2_dirhash_t *ret_hash, 972 ext2_dirhash_t *ret_minor_hash); 973 974 975/* dir_iterate.c */ 976extern errcode_t ext2fs_get_rec_len(ext2_filsys fs, 977 struct ext2_dir_entry *dirent, 978 unsigned int *rec_len); 979extern errcode_t ext2fs_set_rec_len(ext2_filsys fs, 980 unsigned int len, 981 struct ext2_dir_entry *dirent); 982extern errcode_t ext2fs_dir_iterate(ext2_filsys fs, 983 ext2_ino_t dir, 984 int flags, 985 char *block_buf, 986 int (*func)(struct ext2_dir_entry *dirent, 987 int offset, 988 int blocksize, 989 char *buf, 990 void *priv_data), 991 void *priv_data); 992extern errcode_t ext2fs_dir_iterate2(ext2_filsys fs, 993 ext2_ino_t dir, 994 int flags, 995 char *block_buf, 996 int (*func)(ext2_ino_t dir, 997 int entry, 998 struct ext2_dir_entry *dirent, 999 int offset, 1000 int blocksize, 1001 char *buf, 1002 void *priv_data), 1003 void *priv_data); 1004 1005/* dupfs.c */ 1006extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest); 1007 1008/* expanddir.c */ 1009extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir); 1010 1011/* ext_attr.c */ 1012extern __u32 ext2fs_ext_attr_hash_entry(struct ext2_ext_attr_entry *entry, 1013 void *data); 1014extern errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf); 1015extern errcode_t ext2fs_read_ext_attr2(ext2_filsys fs, blk64_t block, 1016 void *buf); 1017extern errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block, 1018 void *buf); 1019extern errcode_t ext2fs_write_ext_attr2(ext2_filsys fs, blk64_t block, 1020 void *buf); 1021extern errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk, 1022 char *block_buf, 1023 int adjust, __u32 *newcount); 1024extern errcode_t ext2fs_adjust_ea_refcount2(ext2_filsys fs, blk64_t blk, 1025 char *block_buf, 1026 int adjust, __u32 *newcount); 1027 1028/* extent.c */ 1029extern errcode_t ext2fs_extent_header_verify(void *ptr, int size); 1030extern errcode_t ext2fs_extent_open(ext2_filsys fs, ext2_ino_t ino, 1031 ext2_extent_handle_t *handle); 1032extern errcode_t ext2fs_extent_open2(ext2_filsys fs, ext2_ino_t ino, 1033 struct ext2_inode *inode, 1034 ext2_extent_handle_t *ret_handle); 1035extern void ext2fs_extent_free(ext2_extent_handle_t handle); 1036extern errcode_t ext2fs_extent_get(ext2_extent_handle_t handle, 1037 int flags, struct ext2fs_extent *extent); 1038extern errcode_t ext2fs_extent_replace(ext2_extent_handle_t handle, int flags, 1039 struct ext2fs_extent *extent); 1040extern errcode_t ext2fs_extent_insert(ext2_extent_handle_t handle, int flags, 1041 struct ext2fs_extent *extent); 1042extern errcode_t ext2fs_extent_set_bmap(ext2_extent_handle_t handle, 1043 blk64_t logical, blk64_t physical, 1044 int flags); 1045extern errcode_t ext2fs_extent_delete(ext2_extent_handle_t handle, int flags); 1046extern errcode_t ext2fs_extent_get_info(ext2_extent_handle_t handle, 1047 struct ext2_extent_info *info); 1048extern errcode_t ext2fs_extent_goto(ext2_extent_handle_t handle, 1049 blk64_t blk); 1050 1051/* fileio.c */ 1052extern errcode_t ext2fs_file_open2(ext2_filsys fs, ext2_ino_t ino, 1053 struct ext2_inode *inode, 1054 int flags, ext2_file_t *ret); 1055extern errcode_t ext2fs_file_open(ext2_filsys fs, ext2_ino_t ino, 1056 int flags, ext2_file_t *ret); 1057extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file); 1058struct ext2_inode *ext2fs_file_get_inode(ext2_file_t file); 1059extern errcode_t ext2fs_file_close(ext2_file_t file); 1060extern errcode_t ext2fs_file_flush(ext2_file_t file); 1061extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf, 1062 unsigned int wanted, unsigned int *got); 1063extern errcode_t ext2fs_file_write(ext2_file_t file, const void *buf, 1064 unsigned int nbytes, unsigned int *written); 1065extern errcode_t ext2fs_file_llseek(ext2_file_t file, __u64 offset, 1066 int whence, __u64 *ret_pos); 1067extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset, 1068 int whence, ext2_off_t *ret_pos); 1069errcode_t ext2fs_file_get_lsize(ext2_file_t file, __u64 *ret_size); 1070extern ext2_off_t ext2fs_file_get_size(ext2_file_t file); 1071extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size); 1072extern errcode_t ext2fs_file_set_size2(ext2_file_t file, ext2_off64_t size); 1073 1074/* finddev.c */ 1075extern char *ext2fs_find_block_device(dev_t device); 1076 1077/* flushb.c */ 1078extern errcode_t ext2fs_sync_device(int fd, int flushb); 1079 1080/* freefs.c */ 1081extern void ext2fs_free(ext2_filsys fs); 1082extern void ext2fs_free_dblist(ext2_dblist dblist); 1083extern void ext2fs_badblocks_list_free(ext2_badblocks_list bb); 1084extern void ext2fs_u32_list_free(ext2_u32_list bb); 1085 1086/* gen_bitmap.c */ 1087extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap); 1088extern errcode_t ext2fs_make_generic_bitmap(errcode_t magic, ext2_filsys fs, 1089 __u32 start, __u32 end, 1090 __u32 real_end, 1091 const char *descr, char *init_map, 1092 ext2fs_generic_bitmap *ret); 1093extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start, 1094 __u32 end, 1095 __u32 real_end, 1096 const char *descr, 1097 ext2fs_generic_bitmap *ret); 1098extern errcode_t ext2fs_copy_generic_bitmap(ext2fs_generic_bitmap src, 1099 ext2fs_generic_bitmap *dest); 1100extern void ext2fs_clear_generic_bitmap(ext2fs_generic_bitmap bitmap); 1101extern errcode_t ext2fs_fudge_generic_bitmap_end(ext2fs_inode_bitmap bitmap, 1102 errcode_t magic, 1103 errcode_t neq, 1104 ext2_ino_t end, 1105 ext2_ino_t *oend); 1106extern void ext2fs_set_generic_bitmap_padding(ext2fs_generic_bitmap map); 1107extern errcode_t ext2fs_resize_generic_bitmap(errcode_t magic, 1108 __u32 new_end, 1109 __u32 new_real_end, 1110 ext2fs_generic_bitmap bmap); 1111extern errcode_t ext2fs_compare_generic_bitmap(errcode_t magic, errcode_t neq, 1112 ext2fs_generic_bitmap bm1, 1113 ext2fs_generic_bitmap bm2); 1114extern errcode_t ext2fs_get_generic_bitmap_range(ext2fs_generic_bitmap bmap, 1115 errcode_t magic, 1116 __u32 start, __u32 num, 1117 void *out); 1118extern errcode_t ext2fs_set_generic_bitmap_range(ext2fs_generic_bitmap bmap, 1119 errcode_t magic, 1120 __u32 start, __u32 num, 1121 void *in); 1122 1123/* gen_bitmap64.c */ 1124void ext2fs_free_generic_bmap(ext2fs_generic_bitmap bmap); 1125errcode_t ext2fs_alloc_generic_bmap(ext2_filsys fs, errcode_t magic, 1126 int type, __u64 start, __u64 end, 1127 __u64 real_end, 1128 const char *descr, 1129 ext2fs_generic_bitmap *ret); 1130errcode_t ext2fs_copy_generic_bmap(ext2fs_generic_bitmap src, 1131 ext2fs_generic_bitmap *dest); 1132void ext2fs_clear_generic_bmap(ext2fs_generic_bitmap bitmap); 1133errcode_t ext2fs_fudge_generic_bmap_end(ext2fs_generic_bitmap bitmap, 1134 errcode_t neq, 1135 __u64 end, __u64 *oend); 1136void ext2fs_set_generic_bmap_padding(ext2fs_generic_bitmap bmap); 1137errcode_t ext2fs_resize_generic_bmap(ext2fs_generic_bitmap bmap, 1138 __u64 new_end, 1139 __u64 new_real_end); 1140errcode_t ext2fs_compare_generic_bmap(errcode_t neq, 1141 ext2fs_generic_bitmap bm1, 1142 ext2fs_generic_bitmap bm2); 1143errcode_t ext2fs_get_generic_bmap_range(ext2fs_generic_bitmap bmap, 1144 __u64 start, unsigned int num, 1145 void *out); 1146errcode_t ext2fs_set_generic_bmap_range(ext2fs_generic_bitmap bmap, 1147 __u64 start, unsigned int num, 1148 void *in); 1149errcode_t ext2fs_convert_subcluster_bitmap(ext2_filsys fs, 1150 ext2fs_block_bitmap *bitmap); 1151 1152/* getsize.c */ 1153extern errcode_t ext2fs_get_device_size(const char *file, int blocksize, 1154 blk_t *retblocks); 1155extern errcode_t ext2fs_get_device_size2(const char *file, int blocksize, 1156 blk64_t *retblocks); 1157 1158/* getsectsize.c */ 1159errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize); 1160errcode_t ext2fs_get_device_phys_sectsize(const char *file, int *sectsize); 1161 1162/* i_block.c */ 1163errcode_t ext2fs_iblk_add_blocks(ext2_filsys fs, struct ext2_inode *inode, 1164 blk64_t num_blocks); 1165errcode_t ext2fs_iblk_sub_blocks(ext2_filsys fs, struct ext2_inode *inode, 1166 blk64_t num_blocks); 1167errcode_t ext2fs_iblk_set(ext2_filsys fs, struct ext2_inode *inode, blk64_t b); 1168 1169/* imager.c */ 1170extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags); 1171extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags); 1172extern errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd, int flags); 1173extern errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd, int flags); 1174extern errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags); 1175extern errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags); 1176 1177/* ind_block.c */ 1178errcode_t ext2fs_read_ind_block(ext2_filsys fs, blk_t blk, void *buf); 1179errcode_t ext2fs_write_ind_block(ext2_filsys fs, blk_t blk, void *buf); 1180 1181/* initialize.c */ 1182extern errcode_t ext2fs_initialize(const char *name, int flags, 1183 struct ext2_super_block *param, 1184 io_manager manager, ext2_filsys *ret_fs); 1185 1186/* icount.c */ 1187extern void ext2fs_free_icount(ext2_icount_t icount); 1188extern errcode_t ext2fs_create_icount_tdb(ext2_filsys fs, char *tdb_dir, 1189 int flags, ext2_icount_t *ret); 1190extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags, 1191 unsigned int size, 1192 ext2_icount_t hint, ext2_icount_t *ret); 1193extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags, 1194 unsigned int size, 1195 ext2_icount_t *ret); 1196extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ext2_ino_t ino, 1197 __u16 *ret); 1198extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ext2_ino_t ino, 1199 __u16 *ret); 1200extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ext2_ino_t ino, 1201 __u16 *ret); 1202extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ext2_ino_t ino, 1203 __u16 count); 1204extern ext2_ino_t ext2fs_get_icount_size(ext2_icount_t icount); 1205errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *); 1206 1207/* inode.c */ 1208extern errcode_t ext2fs_flush_icache(ext2_filsys fs); 1209extern errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan, 1210 ext2_ino_t *ino, 1211 struct ext2_inode *inode, 1212 int bufsize); 1213extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks, 1214 ext2_inode_scan *ret_scan); 1215extern void ext2fs_close_inode_scan(ext2_inode_scan scan); 1216extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino, 1217 struct ext2_inode *inode); 1218extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan, 1219 int group); 1220extern void ext2fs_set_inode_callback 1221 (ext2_inode_scan scan, 1222 errcode_t (*done_group)(ext2_filsys fs, 1223 ext2_inode_scan scan, 1224 dgrp_t group, 1225 void * priv_data), 1226 void *done_group_data); 1227extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags, 1228 int clear_flags); 1229extern errcode_t ext2fs_read_inode_full(ext2_filsys fs, ext2_ino_t ino, 1230 struct ext2_inode * inode, 1231 int bufsize); 1232extern errcode_t ext2fs_read_inode (ext2_filsys fs, ext2_ino_t ino, 1233 struct ext2_inode * inode); 1234extern errcode_t ext2fs_write_inode_full(ext2_filsys fs, ext2_ino_t ino, 1235 struct ext2_inode * inode, 1236 int bufsize); 1237extern errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino, 1238 struct ext2_inode * inode); 1239extern errcode_t ext2fs_write_new_inode(ext2_filsys fs, ext2_ino_t ino, 1240 struct ext2_inode * inode); 1241extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); 1242extern errcode_t ext2fs_check_directory(ext2_filsys fs, ext2_ino_t ino); 1243 1244/* inode_io.c */ 1245extern io_manager inode_io_manager; 1246extern errcode_t ext2fs_inode_io_intern(ext2_filsys fs, ext2_ino_t ino, 1247 char **name); 1248extern errcode_t ext2fs_inode_io_intern2(ext2_filsys fs, ext2_ino_t ino, 1249 struct ext2_inode *inode, 1250 char **name); 1251 1252/* ismounted.c */ 1253extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags); 1254extern errcode_t ext2fs_check_mount_point(const char *device, int *mount_flags, 1255 char *mtpt, int mtlen); 1256 1257/* punch.c */ 1258extern errcode_t ext2fs_punch(ext2_filsys fs, ext2_ino_t ino, 1259 struct ext2_inode *inode, 1260 char *block_buf, blk64_t start, 1261 blk64_t end); 1262 1263/* namei.c */ 1264extern errcode_t ext2fs_lookup(ext2_filsys fs, ext2_ino_t dir, const char *name, 1265 int namelen, char *buf, ext2_ino_t *inode); 1266extern errcode_t ext2fs_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1267 const char *name, ext2_ino_t *inode); 1268errcode_t ext2fs_namei_follow(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1269 const char *name, ext2_ino_t *inode); 1270extern errcode_t ext2fs_follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1271 ext2_ino_t inode, ext2_ino_t *res_inode); 1272 1273/* native.c */ 1274int ext2fs_native_flag(void); 1275 1276/* newdir.c */ 1277extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino, 1278 ext2_ino_t parent_ino, char **block); 1279 1280/* mkdir.c */ 1281extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum, 1282 const char *name); 1283 1284/* mkjournal.c */ 1285extern errcode_t ext2fs_zero_blocks(ext2_filsys fs, blk_t blk, int num, 1286 blk_t *ret_blk, int *ret_count); 1287extern errcode_t ext2fs_zero_blocks2(ext2_filsys fs, blk64_t blk, int num, 1288 blk64_t *ret_blk, int *ret_count); 1289extern errcode_t ext2fs_create_journal_superblock(ext2_filsys fs, 1290 __u32 num_blocks, int flags, 1291 char **ret_jsb); 1292extern errcode_t ext2fs_add_journal_device(ext2_filsys fs, 1293 ext2_filsys journal_dev); 1294extern errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t num_blocks, 1295 int flags); 1296extern int ext2fs_default_journal_size(__u64 num_blocks); 1297 1298/* openfs.c */ 1299extern errcode_t ext2fs_open(const char *name, int flags, int superblock, 1300 unsigned int block_size, io_manager manager, 1301 ext2_filsys *ret_fs); 1302extern errcode_t ext2fs_open2(const char *name, const char *io_options, 1303 int flags, int superblock, 1304 unsigned int block_size, io_manager manager, 1305 ext2_filsys *ret_fs); 1306extern blk64_t ext2fs_descriptor_block_loc2(ext2_filsys fs, 1307 blk64_t group_block, dgrp_t i); 1308extern blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block, 1309 dgrp_t i); 1310errcode_t ext2fs_get_data_io(ext2_filsys fs, io_channel *old_io); 1311errcode_t ext2fs_set_data_io(ext2_filsys fs, io_channel new_io); 1312errcode_t ext2fs_rewrite_to_io(ext2_filsys fs, io_channel new_io); 1313 1314/* get_pathname.c */ 1315extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino, 1316 char **name); 1317 1318/* link.c */ 1319errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name, 1320 ext2_ino_t ino, int flags); 1321errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir, const char *name, 1322 ext2_ino_t ino, int flags); 1323 1324/* read_bb.c */ 1325extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs, 1326 ext2_badblocks_list *bb_list); 1327 1328/* read_bb_file.c */ 1329extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f, 1330 ext2_badblocks_list *bb_list, 1331 void *priv_data, 1332 void (*invalid)(ext2_filsys fs, 1333 blk_t blk, 1334 char *badstr, 1335 void *priv_data)); 1336extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f, 1337 ext2_badblocks_list *bb_list, 1338 void (*invalid)(ext2_filsys fs, 1339 blk_t blk)); 1340 1341/* res_gdt.c */ 1342extern errcode_t ext2fs_create_resize_inode(ext2_filsys fs); 1343 1344/* swapfs.c */ 1345extern void ext2fs_swap_ext_attr(char *to, char *from, int bufsize, 1346 int has_header); 1347extern void ext2fs_swap_ext_attr_header(struct ext2_ext_attr_header *to_header, 1348 struct ext2_ext_attr_header *from_hdr); 1349extern void ext2fs_swap_ext_attr_entry(struct ext2_ext_attr_entry *to_entry, 1350 struct ext2_ext_attr_entry *from_entry); 1351extern void ext2fs_swap_super(struct ext2_super_block * super); 1352extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp); 1353extern void ext2fs_swap_group_desc2(ext2_filsys, struct ext2_group_desc *gdp); 1354extern void ext2fs_swap_inode_full(ext2_filsys fs, struct ext2_inode_large *t, 1355 struct ext2_inode_large *f, int hostorder, 1356 int bufsize); 1357extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t, 1358 struct ext2_inode *f, int hostorder); 1359 1360/* valid_blk.c */ 1361extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode); 1362 1363/* version.c */ 1364extern int ext2fs_parse_version_string(const char *ver_string); 1365extern int ext2fs_get_library_version(const char **ver_string, 1366 const char **date_string); 1367 1368/* write_bb_file.c */ 1369extern errcode_t ext2fs_write_bb_FILE(ext2_badblocks_list bb_list, 1370 unsigned int flags, 1371 FILE *f); 1372 1373 1374/* inline functions */ 1375extern errcode_t ext2fs_get_mem(unsigned long size, void *ptr); 1376extern errcode_t ext2fs_get_memalign(unsigned long size, 1377 unsigned long align, void *ptr); 1378extern errcode_t ext2fs_get_memzero(unsigned long size, void *ptr); 1379extern errcode_t ext2fs_get_array(unsigned long count, 1380 unsigned long size, void *ptr); 1381extern errcode_t ext2fs_get_arrayzero(unsigned long count, 1382 unsigned long size, void *ptr); 1383extern errcode_t ext2fs_free_mem(void *ptr); 1384extern errcode_t ext2fs_resize_mem(unsigned long old_size, 1385 unsigned long size, void *ptr); 1386extern void ext2fs_mark_super_dirty(ext2_filsys fs); 1387extern void ext2fs_mark_changed(ext2_filsys fs); 1388extern int ext2fs_test_changed(ext2_filsys fs); 1389extern void ext2fs_mark_valid(ext2_filsys fs); 1390extern void ext2fs_unmark_valid(ext2_filsys fs); 1391extern int ext2fs_test_valid(ext2_filsys fs); 1392extern void ext2fs_mark_ib_dirty(ext2_filsys fs); 1393extern void ext2fs_mark_bb_dirty(ext2_filsys fs); 1394extern int ext2fs_test_ib_dirty(ext2_filsys fs); 1395extern int ext2fs_test_bb_dirty(ext2_filsys fs); 1396extern int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk); 1397extern int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino); 1398extern blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group); 1399extern blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group); 1400extern blk_t ext2fs_inode_data_blocks(ext2_filsys fs, 1401 struct ext2_inode *inode); 1402extern unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b); 1403extern __u64 ext2fs_div64_ceil(__u64 a, __u64 b); 1404extern int ext2fs_open_file(const char *pathname, int flags, ...); 1405extern int ext2fs_stat(const char *path, ext2fs_struct_stat *buf); 1406 1407/* 1408 * The actual inlined functions definitions themselves... 1409 * 1410 * If NO_INLINE_FUNCS is defined, then we won't try to do inline 1411 * functions at all! 1412 */ 1413#if (defined(INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS)) 1414#ifdef INCLUDE_INLINE_FUNCS 1415#define _INLINE_ extern 1416#else 1417#ifdef __GNUC__ 1418#define _INLINE_ extern __inline__ 1419#else /* For Watcom C */ 1420#define _INLINE_ extern inline 1421#endif 1422#endif 1423 1424#ifndef EXT2_CUSTOM_MEMORY_ROUTINES 1425#include <string.h> 1426/* 1427 * Allocate memory 1428 */ 1429_INLINE_ errcode_t ext2fs_get_mem(unsigned long size, void *ptr) 1430{ 1431 void *pp; 1432 1433 pp = malloc(size); 1434 if (!pp) 1435 return EXT2_ET_NO_MEMORY; 1436 memcpy(ptr, &pp, sizeof (pp)); 1437 return 0; 1438} 1439 1440_INLINE_ errcode_t ext2fs_get_memalign(unsigned long size, 1441 unsigned long align, void *ptr) 1442{ 1443 errcode_t retval; 1444 1445 if (align == 0) 1446 align = 8; 1447 retval = posix_memalign((void **) ptr, align, size); 1448 if (retval) { 1449 if (retval == ENOMEM) 1450 return EXT2_ET_NO_MEMORY; 1451 return retval; 1452 } 1453 return 0; 1454} 1455 1456_INLINE_ errcode_t ext2fs_get_memzero(unsigned long size, void *ptr) 1457{ 1458 void *pp; 1459 1460 pp = malloc(size); 1461 if (!pp) 1462 return EXT2_ET_NO_MEMORY; 1463 memset(pp, 0, size); 1464 memcpy(ptr, &pp, sizeof(pp)); 1465 return 0; 1466} 1467 1468_INLINE_ errcode_t ext2fs_get_array(unsigned long count, unsigned long size, void *ptr) 1469{ 1470 if (count && (-1UL)/count<size) 1471 return EXT2_ET_NO_MEMORY; 1472 return ext2fs_get_mem(count*size, ptr); 1473} 1474 1475_INLINE_ errcode_t ext2fs_get_arrayzero(unsigned long count, 1476 unsigned long size, void *ptr) 1477{ 1478 void *pp; 1479 1480 if (count && (-1UL)/count<size) 1481 return EXT2_ET_NO_MEMORY; 1482 pp = calloc(count, size); 1483 if (!pp) 1484 return EXT2_ET_NO_MEMORY; 1485 memcpy(ptr, &pp, sizeof(pp)); 1486 return 0; 1487} 1488 1489/* 1490 * Free memory 1491 */ 1492_INLINE_ errcode_t ext2fs_free_mem(void *ptr) 1493{ 1494 void *p; 1495 1496 memcpy(&p, ptr, sizeof(p)); 1497 free(p); 1498 p = 0; 1499 memcpy(ptr, &p, sizeof(p)); 1500 return 0; 1501} 1502 1503/* 1504 * Resize memory 1505 */ 1506_INLINE_ errcode_t ext2fs_resize_mem(unsigned long EXT2FS_ATTR((unused)) old_size, 1507 unsigned long size, void *ptr) 1508{ 1509 void *p; 1510 1511 /* Use "memcpy" for pointer assignments here to avoid problems 1512 * with C99 strict type aliasing rules. */ 1513 memcpy(&p, ptr, sizeof(p)); 1514 p = realloc(p, size); 1515 if (!p) 1516 return EXT2_ET_NO_MEMORY; 1517 memcpy(ptr, &p, sizeof(p)); 1518 return 0; 1519} 1520#endif /* Custom memory routines */ 1521 1522/* 1523 * Mark a filesystem superblock as dirty 1524 */ 1525_INLINE_ void ext2fs_mark_super_dirty(ext2_filsys fs) 1526{ 1527 fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_CHANGED; 1528} 1529 1530/* 1531 * Mark a filesystem as changed 1532 */ 1533_INLINE_ void ext2fs_mark_changed(ext2_filsys fs) 1534{ 1535 fs->flags |= EXT2_FLAG_CHANGED; 1536} 1537 1538/* 1539 * Check to see if a filesystem has changed 1540 */ 1541_INLINE_ int ext2fs_test_changed(ext2_filsys fs) 1542{ 1543 return (fs->flags & EXT2_FLAG_CHANGED); 1544} 1545 1546/* 1547 * Mark a filesystem as valid 1548 */ 1549_INLINE_ void ext2fs_mark_valid(ext2_filsys fs) 1550{ 1551 fs->flags |= EXT2_FLAG_VALID; 1552} 1553 1554/* 1555 * Mark a filesystem as NOT valid 1556 */ 1557_INLINE_ void ext2fs_unmark_valid(ext2_filsys fs) 1558{ 1559 fs->flags &= ~EXT2_FLAG_VALID; 1560} 1561 1562/* 1563 * Check to see if a filesystem is valid 1564 */ 1565_INLINE_ int ext2fs_test_valid(ext2_filsys fs) 1566{ 1567 return (fs->flags & EXT2_FLAG_VALID); 1568} 1569 1570/* 1571 * Mark the inode bitmap as dirty 1572 */ 1573_INLINE_ void ext2fs_mark_ib_dirty(ext2_filsys fs) 1574{ 1575 fs->flags |= EXT2_FLAG_IB_DIRTY | EXT2_FLAG_CHANGED; 1576} 1577 1578/* 1579 * Mark the block bitmap as dirty 1580 */ 1581_INLINE_ void ext2fs_mark_bb_dirty(ext2_filsys fs) 1582{ 1583 fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_CHANGED; 1584} 1585 1586/* 1587 * Check to see if a filesystem's inode bitmap is dirty 1588 */ 1589_INLINE_ int ext2fs_test_ib_dirty(ext2_filsys fs) 1590{ 1591 return (fs->flags & EXT2_FLAG_IB_DIRTY); 1592} 1593 1594/* 1595 * Check to see if a filesystem's block bitmap is dirty 1596 */ 1597_INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs) 1598{ 1599 return (fs->flags & EXT2_FLAG_BB_DIRTY); 1600} 1601 1602/* 1603 * Return the group # of a block 1604 */ 1605_INLINE_ int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk) 1606{ 1607 return ext2fs_group_of_blk2(fs, blk); 1608} 1609/* 1610 * Return the group # of an inode number 1611 */ 1612_INLINE_ int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino) 1613{ 1614 return (ino - 1) / fs->super->s_inodes_per_group; 1615} 1616 1617/* 1618 * Return the first block (inclusive) in a group 1619 */ 1620_INLINE_ blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group) 1621{ 1622 return ext2fs_group_first_block2(fs, group); 1623} 1624 1625/* 1626 * Return the last block (inclusive) in a group 1627 */ 1628_INLINE_ blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group) 1629{ 1630 return ext2fs_group_last_block2(fs, group); 1631} 1632 1633_INLINE_ blk_t ext2fs_inode_data_blocks(ext2_filsys fs, 1634 struct ext2_inode *inode) 1635{ 1636 return ext2fs_inode_data_blocks2(fs, inode); 1637} 1638 1639/* 1640 * This is an efficient, overflow safe way of calculating ceil((1.0 * a) / b) 1641 */ 1642_INLINE_ unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b) 1643{ 1644 if (!a) 1645 return 0; 1646 return ((a - 1) / b) + 1; 1647} 1648 1649_INLINE_ __u64 ext2fs_div64_ceil(__u64 a, __u64 b) 1650{ 1651 if (!a) 1652 return 0; 1653 return ((a - 1) / b) + 1; 1654} 1655 1656_INLINE_ int ext2fs_open_file(const char *pathname, int flags, ...) 1657{ 1658 va_list args; 1659 mode_t mode; 1660 1661 va_start(args, flags); 1662 mode = va_arg(args, mode_t); 1663 va_end(args); 1664 1665 if (mode) 1666#ifdef HAVE_OPEN64 1667 return open64(pathname, flags, mode); 1668 else 1669 return open64(pathname, flags); 1670#else 1671 return open(pathname, flags, mode); 1672 else 1673 return open(pathname, flags); 1674#endif 1675} 1676 1677_INLINE_ int ext2fs_stat(const char *path, ext2fs_struct_stat *buf) 1678{ 1679#ifdef HAVE_OPEN64 1680 return stat64(path, buf); 1681#else 1682 return open(path, buf); 1683#endif 1684} 1685 1686#undef _INLINE_ 1687#endif 1688 1689#ifdef __cplusplus 1690} 1691#endif 1692 1693#endif /* _EXT2FS_EXT2FS_H */ 1694