ext2fs.h revision c1359d91958cadfbc0987921ee5b4db717852e90
1/* 2 * ext2fs.h --- ext2fs 3 * 4 * Copyright (C) 1993, 1994, 1995, 1996 Theodore Ts'o. 5 * 6 * %Begin-Header% 7 * This file may be redistributed under the terms of the GNU Library 8 * General Public License, version 2. 9 * %End-Header% 10 */ 11 12#ifndef _EXT2FS_EXT2FS_H 13#define _EXT2FS_EXT2FS_H 14 15#ifdef __GNUC__ 16#define EXT2FS_ATTR(x) __attribute__(x) 17#else 18#define EXT2FS_ATTR(x) 19#endif 20 21#ifdef __cplusplus 22extern "C" { 23#endif 24 25/* 26 * Non-GNU C compilers won't necessarily understand inline 27 */ 28#if (!defined(__GNUC__) && !defined(__WATCOMC__)) 29#define NO_INLINE_FUNCS 30#endif 31 32#ifndef _XOPEN_SOURCE 33#define _XOPEN_SOURCE 600 /* for posix_memalign() */ 34#endif 35 36/* 37 * Where the master copy of the superblock is located, and how big 38 * superblocks are supposed to be. We define SUPERBLOCK_SIZE because 39 * the size of the superblock structure is not necessarily trustworthy 40 * (some versions have the padding set up so that the superblock is 41 * 1032 bytes long). 42 */ 43#define SUPERBLOCK_OFFSET 1024 44#define SUPERBLOCK_SIZE 1024 45 46/* 47 * The last ext2fs revision level that this version of the library is 48 * able to support. 49 */ 50#define EXT2_LIB_CURRENT_REV EXT2_DYNAMIC_REV 51 52#ifdef HAVE_SYS_TYPES_H 53#include <sys/types.h> 54#endif 55 56#include <stdio.h> 57#include <stdlib.h> 58#include <string.h> 59#include <errno.h> 60#include <sys/types.h> 61#include <sys/stat.h> 62#include <fcntl.h> 63 64#ifndef __USE_XOPEN2K 65/* If the "#define _XOPEN_SOURCE 600" didn't succeed in declaring 66 * posix_memalign(), maybe due to <features.h> or <stdlib.h> included beforej 67 * _XOPEN_SOURCE, declare it here to avoid compiler warnings. */ 68extern int posix_memalign(void **__memptr, size_t __alignment, size_t __size); 69#endif 70 71#if EXT2_FLAT_INCLUDES 72#include "e2_types.h" 73#include "ext2_fs.h" 74#include "ext3_extents.h" 75#else 76#include <ext2fs/ext2_types.h> 77#include <ext2fs/ext2_fs.h> 78#include <ext2fs/ext3_extents.h> 79#endif /* EXT2_FLAT_INCLUDES */ 80 81typedef __u32 ext2_ino_t; 82typedef __u32 blk_t; 83typedef __u64 blk64_t; 84typedef __u32 dgrp_t; 85typedef __u32 ext2_off_t; 86typedef __u64 ext2_off64_t; 87typedef __s64 e2_blkcnt_t; 88typedef __u32 ext2_dirhash_t; 89 90#if EXT2_FLAT_INCLUDES 91#include "com_err.h" 92#include "ext2_io.h" 93#include "ext2_err.h" 94#include "ext2_ext_attr.h" 95#else 96#include <et/com_err.h> 97#include <ext2fs/ext2_io.h> 98#include <ext2fs/ext2_err.h> 99#include <ext2fs/ext2_ext_attr.h> 100#endif 101 102/* 103 * Portability help for Microsoft Visual C++ 104 */ 105#ifdef _MSC_VER 106#define EXT2_QSORT_TYPE int __cdecl 107#else 108#define EXT2_QSORT_TYPE int 109#endif 110 111typedef struct struct_ext2_filsys *ext2_filsys; 112 113#define EXT2FS_MARK_ERROR 0 114#define EXT2FS_UNMARK_ERROR 1 115#define EXT2FS_TEST_ERROR 2 116 117typedef struct ext2fs_struct_generic_bitmap *ext2fs_generic_bitmap; 118typedef struct ext2fs_struct_generic_bitmap *ext2fs_inode_bitmap; 119typedef struct ext2fs_struct_generic_bitmap *ext2fs_block_bitmap; 120 121#define EXT2_FIRST_INODE(s) EXT2_FIRST_INO(s) 122 123 124/* 125 * Badblocks list definitions 126 */ 127 128typedef struct ext2_struct_u32_list *ext2_badblocks_list; 129typedef struct ext2_struct_u32_iterate *ext2_badblocks_iterate; 130 131typedef struct ext2_struct_u32_list *ext2_u32_list; 132typedef struct ext2_struct_u32_iterate *ext2_u32_iterate; 133 134/* old */ 135typedef struct ext2_struct_u32_list *badblocks_list; 136typedef struct ext2_struct_u32_iterate *badblocks_iterate; 137 138#define BADBLOCKS_FLAG_DIRTY 1 139 140/* 141 * ext2_dblist structure and abstractions (see dblist.c) 142 */ 143struct ext2_db_entry2 { 144 ext2_ino_t ino; 145 blk64_t blk; 146 e2_blkcnt_t blockcnt; 147}; 148 149/* Ye Olde 32-bit version */ 150struct ext2_db_entry { 151 ext2_ino_t ino; 152 blk_t blk; 153 int blockcnt; 154}; 155 156typedef struct ext2_struct_dblist *ext2_dblist; 157 158#define DBLIST_ABORT 1 159 160/* 161 * ext2_fileio definitions 162 */ 163 164#define EXT2_FILE_WRITE 0x0001 165#define EXT2_FILE_CREATE 0x0002 166 167#define EXT2_FILE_MASK 0x00FF 168 169#define EXT2_FILE_BUF_DIRTY 0x4000 170#define EXT2_FILE_BUF_VALID 0x2000 171 172typedef struct ext2_file *ext2_file_t; 173 174#define EXT2_SEEK_SET 0 175#define EXT2_SEEK_CUR 1 176#define EXT2_SEEK_END 2 177 178/* 179 * Flags for the ext2_filsys structure and for ext2fs_open() 180 */ 181#define EXT2_FLAG_RW 0x01 182#define EXT2_FLAG_CHANGED 0x02 183#define EXT2_FLAG_DIRTY 0x04 184#define EXT2_FLAG_VALID 0x08 185#define EXT2_FLAG_IB_DIRTY 0x10 186#define EXT2_FLAG_BB_DIRTY 0x20 187#define EXT2_FLAG_SWAP_BYTES 0x40 188#define EXT2_FLAG_SWAP_BYTES_READ 0x80 189#define EXT2_FLAG_SWAP_BYTES_WRITE 0x100 190#define EXT2_FLAG_MASTER_SB_ONLY 0x200 191#define EXT2_FLAG_FORCE 0x400 192#define EXT2_FLAG_SUPER_ONLY 0x800 193#define EXT2_FLAG_JOURNAL_DEV_OK 0x1000 194#define EXT2_FLAG_IMAGE_FILE 0x2000 195#define EXT2_FLAG_EXCLUSIVE 0x4000 196#define EXT2_FLAG_SOFTSUPP_FEATURES 0x8000 197#define EXT2_FLAG_NOFREE_ON_ERROR 0x10000 198#define EXT2_FLAG_64BITS 0x20000 199#define EXT2_FLAG_PRINT_PROGRESS 0x40000 200#define EXT2_FLAG_DIRECT_IO 0x80000 201#define EXT2_FLAG_SKIP_MMP 0x100000 202 203/* 204 * Special flag in the ext2 inode i_flag field that means that this is 205 * a new inode. (So that ext2_write_inode() can clear extra fields.) 206 */ 207#define EXT2_NEW_INODE_FL 0x80000000 208 209/* 210 * Flags for mkjournal 211 */ 212#define EXT2_MKJOURNAL_V1_SUPER 0x0000001 /* create V1 superblock (deprecated) */ 213#define EXT2_MKJOURNAL_LAZYINIT 0x0000002 /* don't zero journal inode before use*/ 214 215struct opaque_ext2_group_desc; 216 217struct struct_ext2_filsys { 218 errcode_t magic; 219 io_channel io; 220 int flags; 221 char * device_name; 222 struct ext2_super_block * super; 223 unsigned int blocksize; 224 int fragsize; 225 dgrp_t group_desc_count; 226 unsigned long desc_blocks; 227 struct opaque_ext2_group_desc * group_desc; 228 unsigned int inode_blocks_per_group; 229 ext2fs_inode_bitmap inode_map; 230 ext2fs_block_bitmap block_map; 231 /* XXX FIXME-64: not 64-bit safe, but not used? */ 232 errcode_t (*get_blocks)(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); 233 errcode_t (*check_directory)(ext2_filsys fs, ext2_ino_t ino); 234 errcode_t (*write_bitmaps)(ext2_filsys fs); 235 errcode_t (*read_inode)(ext2_filsys fs, ext2_ino_t ino, 236 struct ext2_inode *inode); 237 errcode_t (*write_inode)(ext2_filsys fs, ext2_ino_t ino, 238 struct ext2_inode *inode); 239 ext2_badblocks_list badblocks; 240 ext2_dblist dblist; 241 __u32 stride; /* for mke2fs */ 242 struct ext2_super_block * orig_super; 243 struct ext2_image_hdr * image_header; 244 __u32 umask; 245 time_t now; 246 int cluster_ratio_bits; 247 __u16 default_bitmap_type; 248 __u16 pad; 249 /* 250 * Reserved for future expansion 251 */ 252 __u32 reserved[5]; 253 254 /* 255 * Reserved for the use of the calling application. 256 */ 257 void * priv_data; 258 259 /* 260 * Inode cache 261 */ 262 struct ext2_inode_cache *icache; 263 io_channel image_io; 264 265 /* 266 * More callback functions 267 */ 268 errcode_t (*get_alloc_block)(ext2_filsys fs, blk64_t goal, 269 blk64_t *ret); 270 void (*block_alloc_stats)(ext2_filsys fs, blk64_t blk, int inuse); 271 272 /* 273 * Buffers for Multiple mount protection(MMP) block. 274 */ 275 void *mmp_buf; 276 void *mmp_cmp; 277 int mmp_fd; 278 279 /* 280 * Time at which e2fsck last updated the MMP block. 281 */ 282 long mmp_last_written; 283}; 284 285#if EXT2_FLAT_INCLUDES 286#include "e2_bitops.h" 287#else 288#include <ext2fs/bitops.h> 289#endif 290 291/* 292 * 64-bit bitmap backend types 293 */ 294 295#define EXT2FS_BMAP64_BITARRAY 1 296#define EXT2FS_BMAP64_RBTREE 2 297 298/* 299 * Return flags for the block iterator functions 300 */ 301#define BLOCK_CHANGED 1 302#define BLOCK_ABORT 2 303#define BLOCK_ERROR 4 304 305/* 306 * Block interate flags 307 * 308 * BLOCK_FLAG_APPEND, or BLOCK_FLAG_HOLE, indicates that the interator 309 * function should be called on blocks where the block number is zero. 310 * This is used by ext2fs_expand_dir() to be able to add a new block 311 * to an inode. It can also be used for programs that want to be able 312 * to deal with files that contain "holes". 313 * 314 * BLOCK_FLAG_DEPTH_TRAVERSE indicates that the iterator function for 315 * the indirect, doubly indirect, etc. blocks should be called after 316 * all of the blocks containined in the indirect blocks are processed. 317 * This is useful if you are going to be deallocating blocks from an 318 * inode. 319 * 320 * BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be 321 * called for data blocks only. 322 * 323 * BLOCK_FLAG_READ_ONLY is a promise by the caller that it will not 324 * modify returned block number. 325 * 326 * BLOCK_FLAG_NO_LARGE is for internal use only. It informs 327 * ext2fs_block_iterate2 that large files won't be accepted. 328 */ 329#define BLOCK_FLAG_APPEND 1 330#define BLOCK_FLAG_HOLE 1 331#define BLOCK_FLAG_DEPTH_TRAVERSE 2 332#define BLOCK_FLAG_DATA_ONLY 4 333#define BLOCK_FLAG_READ_ONLY 8 334 335#define BLOCK_FLAG_NO_LARGE 0x1000 336 337/* 338 * Magic "block count" return values for the block iterator function. 339 */ 340#define BLOCK_COUNT_IND (-1) 341#define BLOCK_COUNT_DIND (-2) 342#define BLOCK_COUNT_TIND (-3) 343#define BLOCK_COUNT_TRANSLATOR (-4) 344 345#if 0 346/* 347 * Flags for ext2fs_move_blocks 348 */ 349#define EXT2_BMOVE_GET_DBLIST 0x0001 350#define EXT2_BMOVE_DEBUG 0x0002 351#endif 352 353/* 354 * Generic (non-filesystem layout specific) extents structure 355 */ 356 357#define EXT2_EXTENT_FLAGS_LEAF 0x0001 358#define EXT2_EXTENT_FLAGS_UNINIT 0x0002 359#define EXT2_EXTENT_FLAGS_SECOND_VISIT 0x0004 360 361struct ext2fs_extent { 362 blk64_t e_pblk; /* first physical block */ 363 blk64_t e_lblk; /* first logical block extent covers */ 364 __u32 e_len; /* number of blocks covered by extent */ 365 __u32 e_flags; /* extent flags */ 366}; 367 368typedef struct ext2_extent_handle *ext2_extent_handle_t; 369typedef struct ext2_extent_path *ext2_extent_path_t; 370 371/* 372 * Flags used by ext2fs_extent_get() 373 */ 374#define EXT2_EXTENT_CURRENT 0x0000 375#define EXT2_EXTENT_MOVE_MASK 0x000F 376#define EXT2_EXTENT_ROOT 0x0001 377#define EXT2_EXTENT_LAST_LEAF 0x0002 378#define EXT2_EXTENT_FIRST_SIB 0x0003 379#define EXT2_EXTENT_LAST_SIB 0x0004 380#define EXT2_EXTENT_NEXT_SIB 0x0005 381#define EXT2_EXTENT_PREV_SIB 0x0006 382#define EXT2_EXTENT_NEXT_LEAF 0x0007 383#define EXT2_EXTENT_PREV_LEAF 0x0008 384#define EXT2_EXTENT_NEXT 0x0009 385#define EXT2_EXTENT_PREV 0x000A 386#define EXT2_EXTENT_UP 0x000B 387#define EXT2_EXTENT_DOWN 0x000C 388#define EXT2_EXTENT_DOWN_AND_LAST 0x000D 389 390/* 391 * Flags used by ext2fs_extent_insert() 392 */ 393#define EXT2_EXTENT_INSERT_AFTER 0x0001 /* insert after handle loc'n */ 394#define EXT2_EXTENT_INSERT_NOSPLIT 0x0002 /* insert may not cause split */ 395 396/* 397 * Flags used by ext2fs_extent_delete() 398 */ 399#define EXT2_EXTENT_DELETE_KEEP_EMPTY 0x001 /* keep node if last extnt gone */ 400 401/* 402 * Flags used by ext2fs_extent_set_bmap() 403 */ 404#define EXT2_EXTENT_SET_BMAP_UNINIT 0x0001 405 406/* 407 * Data structure returned by ext2fs_extent_get_info() 408 */ 409struct ext2_extent_info { 410 int curr_entry; 411 int curr_level; 412 int num_entries; 413 int max_entries; 414 int max_depth; 415 int bytes_avail; 416 blk64_t max_lblk; 417 blk64_t max_pblk; 418 __u32 max_len; 419 __u32 max_uninit_len; 420}; 421 422/* 423 * Flags for directory block reading and writing functions 424 */ 425#define EXT2_DIRBLOCK_V2_STRUCT 0x0001 426 427/* 428 * Return flags for the directory iterator functions 429 */ 430#define DIRENT_CHANGED 1 431#define DIRENT_ABORT 2 432#define DIRENT_ERROR 3 433 434/* 435 * Directory iterator flags 436 */ 437 438#define DIRENT_FLAG_INCLUDE_EMPTY 1 439#define DIRENT_FLAG_INCLUDE_REMOVED 2 440 441#define DIRENT_DOT_FILE 1 442#define DIRENT_DOT_DOT_FILE 2 443#define DIRENT_OTHER_FILE 3 444#define DIRENT_DELETED_FILE 4 445 446/* 447 * Inode scan definitions 448 */ 449typedef struct ext2_struct_inode_scan *ext2_inode_scan; 450 451/* 452 * ext2fs_scan flags 453 */ 454#define EXT2_SF_CHK_BADBLOCKS 0x0001 455#define EXT2_SF_BAD_INODE_BLK 0x0002 456#define EXT2_SF_BAD_EXTRA_BYTES 0x0004 457#define EXT2_SF_SKIP_MISSING_ITABLE 0x0008 458#define EXT2_SF_DO_LAZY 0x0010 459 460/* 461 * ext2fs_check_if_mounted flags 462 */ 463#define EXT2_MF_MOUNTED 1 464#define EXT2_MF_ISROOT 2 465#define EXT2_MF_READONLY 4 466#define EXT2_MF_SWAP 8 467#define EXT2_MF_BUSY 16 468 469/* 470 * Ext2/linux mode flags. We define them here so that we don't need 471 * to depend on the OS's sys/stat.h, since we may be compiling on a 472 * non-Linux system. 473 */ 474#define LINUX_S_IFMT 00170000 475#define LINUX_S_IFSOCK 0140000 476#define LINUX_S_IFLNK 0120000 477#define LINUX_S_IFREG 0100000 478#define LINUX_S_IFBLK 0060000 479#define LINUX_S_IFDIR 0040000 480#define LINUX_S_IFCHR 0020000 481#define LINUX_S_IFIFO 0010000 482#define LINUX_S_ISUID 0004000 483#define LINUX_S_ISGID 0002000 484#define LINUX_S_ISVTX 0001000 485 486#define LINUX_S_IRWXU 00700 487#define LINUX_S_IRUSR 00400 488#define LINUX_S_IWUSR 00200 489#define LINUX_S_IXUSR 00100 490 491#define LINUX_S_IRWXG 00070 492#define LINUX_S_IRGRP 00040 493#define LINUX_S_IWGRP 00020 494#define LINUX_S_IXGRP 00010 495 496#define LINUX_S_IRWXO 00007 497#define LINUX_S_IROTH 00004 498#define LINUX_S_IWOTH 00002 499#define LINUX_S_IXOTH 00001 500 501#define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK) 502#define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG) 503#define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR) 504#define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR) 505#define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK) 506#define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO) 507#define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK) 508 509/* 510 * ext2 size of an inode 511 */ 512#define EXT2_I_SIZE(i) ((i)->i_size | ((__u64) (i)->i_size_high << 32)) 513 514/* 515 * ext2_icount_t abstraction 516 */ 517#define EXT2_ICOUNT_OPT_INCREMENT 0x01 518 519typedef struct ext2_icount *ext2_icount_t; 520 521/* 522 * Flags for ext2fs_bmap 523 */ 524#define BMAP_ALLOC 0x0001 525#define BMAP_SET 0x0002 526 527/* 528 * Returned flags from ext2fs_bmap 529 */ 530#define BMAP_RET_UNINIT 0x0001 531 532/* 533 * Flags for imager.c functions 534 */ 535#define IMAGER_FLAG_INODEMAP 1 536#define IMAGER_FLAG_SPARSEWRITE 2 537 538/* 539 * For checking structure magic numbers... 540 */ 541 542#define EXT2_CHECK_MAGIC(struct, code) \ 543 if ((struct)->magic != (code)) return (code) 544 545 546/* 547 * For ext2 compression support 548 */ 549#define EXT2FS_COMPRESSED_BLKADDR ((blk_t) -1) 550#define HOLE_BLKADDR(_b) ((_b) == 0 || (_b) == EXT2FS_COMPRESSED_BLKADDR) 551 552/* 553 * Features supported by this version of the library 554 */ 555#define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\ 556 EXT2_FEATURE_COMPAT_IMAGIC_INODES|\ 557 EXT3_FEATURE_COMPAT_HAS_JOURNAL|\ 558 EXT2_FEATURE_COMPAT_RESIZE_INODE|\ 559 EXT2_FEATURE_COMPAT_DIR_INDEX|\ 560 EXT2_FEATURE_COMPAT_EXT_ATTR) 561 562/* This #ifdef is temporary until compression is fully supported */ 563#ifdef ENABLE_COMPRESSION 564#ifndef I_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL 565/* If the below warning bugs you, then have 566 `CPPFLAGS=-DI_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL' in your 567 environment at configure time. */ 568 #warning "Compression support is experimental" 569#endif 570#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 571 EXT2_FEATURE_INCOMPAT_COMPRESSION|\ 572 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 573 EXT2_FEATURE_INCOMPAT_META_BG|\ 574 EXT3_FEATURE_INCOMPAT_RECOVER|\ 575 EXT3_FEATURE_INCOMPAT_EXTENTS|\ 576 EXT4_FEATURE_INCOMPAT_FLEX_BG|\ 577 EXT4_FEATURE_INCOMPAT_MMP|\ 578 EXT4_FEATURE_INCOMPAT_64BIT) 579#else 580#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 581 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 582 EXT2_FEATURE_INCOMPAT_META_BG|\ 583 EXT3_FEATURE_INCOMPAT_RECOVER|\ 584 EXT3_FEATURE_INCOMPAT_EXTENTS|\ 585 EXT4_FEATURE_INCOMPAT_FLEX_BG|\ 586 EXT4_FEATURE_INCOMPAT_MMP|\ 587 EXT4_FEATURE_INCOMPAT_64BIT) 588#endif 589#ifdef CONFIG_QUOTA 590#define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\ 591 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|\ 592 EXT2_FEATURE_RO_COMPAT_LARGE_FILE|\ 593 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|\ 594 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|\ 595 EXT4_FEATURE_RO_COMPAT_GDT_CSUM|\ 596 EXT4_FEATURE_RO_COMPAT_BIGALLOC|\ 597 EXT4_FEATURE_RO_COMPAT_QUOTA) 598#else 599#define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\ 600 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|\ 601 EXT2_FEATURE_RO_COMPAT_LARGE_FILE|\ 602 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|\ 603 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|\ 604 EXT4_FEATURE_RO_COMPAT_GDT_CSUM|\ 605 EXT4_FEATURE_RO_COMPAT_BIGALLOC) 606#endif 607 608/* 609 * These features are only allowed if EXT2_FLAG_SOFTSUPP_FEATURES is passed 610 * to ext2fs_openfs() 611 */ 612#define EXT2_LIB_SOFTSUPP_INCOMPAT (0) 613#define EXT2_LIB_SOFTSUPP_RO_COMPAT (EXT4_FEATURE_RO_COMPAT_BIGALLOC) 614 615 616/* Translate a block number to a cluster number */ 617#define EXT2FS_CLUSTER_RATIO(fs) (1 << (fs)->cluster_ratio_bits) 618#define EXT2FS_CLUSTER_MASK(fs) (EXT2FS_CLUSTER_RATIO(fs) - 1) 619#define EXT2FS_B2C(fs, blk) ((blk) >> (fs)->cluster_ratio_bits) 620/* Translate a cluster number to a block number */ 621#define EXT2FS_C2B(fs, cluster) ((cluster) << (fs)->cluster_ratio_bits) 622/* Translate # of blks to # of clusters */ 623#define EXT2FS_NUM_B2C(fs, blks) (((blks) + EXT2FS_CLUSTER_MASK(fs)) >> \ 624 (fs)->cluster_ratio_bits) 625 626#if defined(HAVE_FSTAT64) && !defined(__OSX_AVAILABLE_BUT_DEPRECATED) 627typedef struct stat64 ext2fs_struct_stat; 628#else 629typedef struct stat ext2fs_struct_stat; 630#endif 631 632/* 633 * For ext2fs_close2() and ext2fs_flush2(), this flag allows you to 634 * avoid the fsync call. 635 */ 636#define EXT2_FLAG_FLUSH_NO_SYNC 1 637 638/* 639 * function prototypes 640 */ 641 642/* alloc.c */ 643extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode, 644 ext2fs_inode_bitmap map, ext2_ino_t *ret); 645extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal, 646 ext2fs_block_bitmap map, blk_t *ret); 647extern errcode_t ext2fs_new_block2(ext2_filsys fs, blk64_t goal, 648 ext2fs_block_bitmap map, blk64_t *ret); 649extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start, 650 blk_t finish, int num, 651 ext2fs_block_bitmap map, 652 blk_t *ret); 653extern errcode_t ext2fs_get_free_blocks2(ext2_filsys fs, blk64_t start, 654 blk64_t finish, int num, 655 ext2fs_block_bitmap map, 656 blk64_t *ret); 657extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal, 658 char *block_buf, blk_t *ret); 659extern errcode_t ext2fs_alloc_block2(ext2_filsys fs, blk64_t goal, 660 char *block_buf, blk64_t *ret); 661extern void ext2fs_set_alloc_block_callback(ext2_filsys fs, 662 errcode_t (*func)(ext2_filsys fs, 663 blk64_t goal, 664 blk64_t *ret), 665 errcode_t (**old)(ext2_filsys fs, 666 blk64_t goal, 667 blk64_t *ret)); 668 669/* alloc_sb.c */ 670extern int ext2fs_reserve_super_and_bgd(ext2_filsys fs, 671 dgrp_t group, 672 ext2fs_block_bitmap bmap); 673extern void ext2fs_set_block_alloc_stats_callback(ext2_filsys fs, 674 void (*func)(ext2_filsys fs, 675 blk64_t blk, 676 int inuse), 677 void (**old)(ext2_filsys fs, 678 blk64_t blk, 679 int inuse)); 680 681/* alloc_stats.c */ 682void ext2fs_inode_alloc_stats(ext2_filsys fs, ext2_ino_t ino, int inuse); 683void ext2fs_inode_alloc_stats2(ext2_filsys fs, ext2_ino_t ino, 684 int inuse, int isdir); 685void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse); 686void ext2fs_block_alloc_stats2(ext2_filsys fs, blk64_t blk, int inuse); 687 688/* alloc_tables.c */ 689extern errcode_t ext2fs_allocate_tables(ext2_filsys fs); 690extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group, 691 ext2fs_block_bitmap bmap); 692 693/* badblocks.c */ 694extern errcode_t ext2fs_u32_list_create(ext2_u32_list *ret, int size); 695extern errcode_t ext2fs_u32_list_add(ext2_u32_list bb, __u32 blk); 696extern int ext2fs_u32_list_find(ext2_u32_list bb, __u32 blk); 697extern int ext2fs_u32_list_test(ext2_u32_list bb, blk_t blk); 698extern errcode_t ext2fs_u32_list_iterate_begin(ext2_u32_list bb, 699 ext2_u32_iterate *ret); 700extern int ext2fs_u32_list_iterate(ext2_u32_iterate iter, blk_t *blk); 701extern void ext2fs_u32_list_iterate_end(ext2_u32_iterate iter); 702extern errcode_t ext2fs_u32_copy(ext2_u32_list src, ext2_u32_list *dest); 703extern int ext2fs_u32_list_equal(ext2_u32_list bb1, ext2_u32_list bb2); 704 705extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret, 706 int size); 707extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb, 708 blk_t blk); 709extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb, 710 blk_t blk); 711extern int ext2fs_u32_list_del(ext2_u32_list bb, __u32 blk); 712extern void ext2fs_badblocks_list_del(ext2_u32_list bb, __u32 blk); 713extern errcode_t 714 ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb, 715 ext2_badblocks_iterate *ret); 716extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter, 717 blk_t *blk); 718extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter); 719extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src, 720 ext2_badblocks_list *dest); 721extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1, 722 ext2_badblocks_list bb2); 723extern int ext2fs_u32_list_count(ext2_u32_list bb); 724 725/* bb_compat */ 726extern errcode_t badblocks_list_create(badblocks_list *ret, int size); 727extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk); 728extern int badblocks_list_test(badblocks_list bb, blk_t blk); 729extern errcode_t badblocks_list_iterate_begin(badblocks_list bb, 730 badblocks_iterate *ret); 731extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk); 732extern void badblocks_list_iterate_end(badblocks_iterate iter); 733extern void badblocks_list_free(badblocks_list bb); 734 735/* bb_inode.c */ 736extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs, 737 ext2_badblocks_list bb_list); 738 739/* bitmaps.c */ 740extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap); 741extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap); 742extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src, 743 ext2fs_generic_bitmap *dest); 744extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs); 745extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs); 746extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs); 747extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs); 748extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs, 749 const char *descr, 750 ext2fs_block_bitmap *ret); 751extern errcode_t ext2fs_allocate_subcluster_bitmap(ext2_filsys fs, 752 const char *descr, 753 ext2fs_block_bitmap *ret); 754extern int ext2fs_get_bitmap_granularity(ext2fs_block_bitmap bitmap); 755extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs, 756 const char *descr, 757 ext2fs_inode_bitmap *ret); 758extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap, 759 ext2_ino_t end, ext2_ino_t *oend); 760extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap, 761 blk_t end, blk_t *oend); 762extern errcode_t ext2fs_fudge_block_bitmap_end2(ext2fs_block_bitmap bitmap, 763 blk64_t end, blk64_t *oend); 764extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap); 765extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap); 766extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs); 767extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs); 768extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end, 769 ext2fs_inode_bitmap bmap); 770extern errcode_t ext2fs_resize_inode_bitmap2(__u64 new_end, 771 __u64 new_real_end, 772 ext2fs_inode_bitmap bmap); 773extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end, 774 ext2fs_block_bitmap bmap); 775extern errcode_t ext2fs_resize_block_bitmap2(__u64 new_end, 776 __u64 new_real_end, 777 ext2fs_block_bitmap bmap); 778extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1, 779 ext2fs_block_bitmap bm2); 780extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1, 781 ext2fs_inode_bitmap bm2); 782extern errcode_t ext2fs_set_inode_bitmap_range(ext2fs_inode_bitmap bmap, 783 ext2_ino_t start, unsigned int num, 784 void *in); 785extern errcode_t ext2fs_set_inode_bitmap_range2(ext2fs_inode_bitmap bmap, 786 __u64 start, size_t num, 787 void *in); 788extern errcode_t ext2fs_get_inode_bitmap_range(ext2fs_inode_bitmap bmap, 789 ext2_ino_t start, unsigned int num, 790 void *out); 791extern errcode_t ext2fs_get_inode_bitmap_range2(ext2fs_inode_bitmap bmap, 792 __u64 start, size_t num, 793 void *out); 794extern errcode_t ext2fs_set_block_bitmap_range(ext2fs_block_bitmap bmap, 795 blk_t start, unsigned int num, 796 void *in); 797extern errcode_t ext2fs_set_block_bitmap_range2(ext2fs_block_bitmap bmap, 798 blk64_t start, size_t num, 799 void *in); 800extern errcode_t ext2fs_get_block_bitmap_range(ext2fs_block_bitmap bmap, 801 blk_t start, unsigned int num, 802 void *out); 803extern errcode_t ext2fs_get_block_bitmap_range2(ext2fs_block_bitmap bmap, 804 blk64_t start, size_t num, 805 void *out); 806 807/* blknum.c */ 808extern dgrp_t ext2fs_group_of_blk2(ext2_filsys fs, blk64_t); 809extern blk64_t ext2fs_group_first_block2(ext2_filsys fs, dgrp_t group); 810extern blk64_t ext2fs_group_last_block2(ext2_filsys fs, dgrp_t group); 811extern int ext2fs_group_blocks_count(ext2_filsys fs, dgrp_t group); 812extern blk64_t ext2fs_inode_data_blocks2(ext2_filsys fs, 813 struct ext2_inode *inode); 814extern blk64_t ext2fs_inode_i_blocks(ext2_filsys fs, 815 struct ext2_inode *inode); 816extern blk64_t ext2fs_blocks_count(struct ext2_super_block *super); 817extern void ext2fs_blocks_count_set(struct ext2_super_block *super, 818 blk64_t blk); 819extern void ext2fs_blocks_count_add(struct ext2_super_block *super, 820 blk64_t blk); 821extern blk64_t ext2fs_r_blocks_count(struct ext2_super_block *super); 822extern void ext2fs_r_blocks_count_set(struct ext2_super_block *super, 823 blk64_t blk); 824extern void ext2fs_r_blocks_count_add(struct ext2_super_block *super, 825 blk64_t blk); 826extern blk64_t ext2fs_free_blocks_count(struct ext2_super_block *super); 827extern void ext2fs_free_blocks_count_set(struct ext2_super_block *super, 828 blk64_t blk); 829extern void ext2fs_free_blocks_count_add(struct ext2_super_block *super, 830 blk64_t blk); 831/* Block group descriptor accessor functions */ 832extern struct ext2_group_desc *ext2fs_group_desc(ext2_filsys fs, 833 struct opaque_ext2_group_desc *gdp, 834 dgrp_t group); 835extern blk64_t ext2fs_block_bitmap_loc(ext2_filsys fs, dgrp_t group); 836extern void ext2fs_block_bitmap_loc_set(ext2_filsys fs, dgrp_t group, 837 blk64_t blk); 838extern blk64_t ext2fs_inode_bitmap_loc(ext2_filsys fs, dgrp_t group); 839extern void ext2fs_inode_bitmap_loc_set(ext2_filsys fs, dgrp_t group, 840 blk64_t blk); 841extern blk64_t ext2fs_inode_table_loc(ext2_filsys fs, dgrp_t group); 842extern void ext2fs_inode_table_loc_set(ext2_filsys fs, dgrp_t group, 843 blk64_t blk); 844extern __u32 ext2fs_bg_free_blocks_count(ext2_filsys fs, dgrp_t group); 845extern void ext2fs_bg_free_blocks_count_set(ext2_filsys fs, dgrp_t group, 846 __u32 n); 847extern __u32 ext2fs_bg_free_inodes_count(ext2_filsys fs, dgrp_t group); 848extern void ext2fs_bg_free_inodes_count_set(ext2_filsys fs, dgrp_t group, 849 __u32 n); 850extern __u32 ext2fs_bg_used_dirs_count(ext2_filsys fs, dgrp_t group); 851extern void ext2fs_bg_used_dirs_count_set(ext2_filsys fs, dgrp_t group, 852 __u32 n); 853extern __u32 ext2fs_bg_itable_unused(ext2_filsys fs, dgrp_t group); 854extern void ext2fs_bg_itable_unused_set(ext2_filsys fs, dgrp_t group, 855 __u32 n); 856extern __u16 ext2fs_bg_flags(ext2_filsys fs, dgrp_t group); 857extern void ext2fs_bg_flags_zap(ext2_filsys fs, dgrp_t group); 858extern int ext2fs_bg_flags_test(ext2_filsys fs, dgrp_t group, __u16 bg_flag); 859extern void ext2fs_bg_flags_set(ext2_filsys fs, dgrp_t group, __u16 bg_flags); 860extern void ext2fs_bg_flags_clear(ext2_filsys fs, dgrp_t group, __u16 bg_flags); 861extern __u16 ext2fs_bg_checksum(ext2_filsys fs, dgrp_t group); 862extern void ext2fs_bg_checksum_set(ext2_filsys fs, dgrp_t group, __u16 checksum); 863extern blk64_t ext2fs_file_acl_block(ext2_filsys fs, 864 const struct ext2_inode *inode); 865extern void ext2fs_file_acl_block_set(ext2_filsys fs, 866 struct ext2_inode *inode, blk64_t blk); 867 868/* block.c */ 869extern errcode_t ext2fs_block_iterate(ext2_filsys fs, 870 ext2_ino_t ino, 871 int flags, 872 char *block_buf, 873 int (*func)(ext2_filsys fs, 874 blk_t *blocknr, 875 int blockcnt, 876 void *priv_data), 877 void *priv_data); 878errcode_t ext2fs_block_iterate2(ext2_filsys fs, 879 ext2_ino_t ino, 880 int flags, 881 char *block_buf, 882 int (*func)(ext2_filsys fs, 883 blk_t *blocknr, 884 e2_blkcnt_t blockcnt, 885 blk_t ref_blk, 886 int ref_offset, 887 void *priv_data), 888 void *priv_data); 889errcode_t ext2fs_block_iterate3(ext2_filsys fs, 890 ext2_ino_t ino, 891 int flags, 892 char *block_buf, 893 int (*func)(ext2_filsys fs, 894 blk64_t *blocknr, 895 e2_blkcnt_t blockcnt, 896 blk64_t ref_blk, 897 int ref_offset, 898 void *priv_data), 899 void *priv_data); 900 901/* bmap.c */ 902extern errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino, 903 struct ext2_inode *inode, 904 char *block_buf, int bmap_flags, 905 blk_t block, blk_t *phys_blk); 906extern errcode_t ext2fs_bmap2(ext2_filsys fs, ext2_ino_t ino, 907 struct ext2_inode *inode, 908 char *block_buf, int bmap_flags, blk64_t block, 909 int *ret_flags, blk64_t *phys_blk); 910 911#if 0 912/* bmove.c */ 913extern errcode_t ext2fs_move_blocks(ext2_filsys fs, 914 ext2fs_block_bitmap reserve, 915 ext2fs_block_bitmap alloc_map, 916 int flags); 917#endif 918 919/* check_desc.c */ 920extern errcode_t ext2fs_check_desc(ext2_filsys fs); 921 922/* closefs.c */ 923extern errcode_t ext2fs_close(ext2_filsys fs); 924extern errcode_t ext2fs_close2(ext2_filsys fs, int flags); 925extern errcode_t ext2fs_flush(ext2_filsys fs); 926extern errcode_t ext2fs_flush2(ext2_filsys fs, int flags); 927extern int ext2fs_bg_has_super(ext2_filsys fs, int group_block); 928extern errcode_t ext2fs_super_and_bgd_loc2(ext2_filsys fs, 929 dgrp_t group, 930 blk64_t *ret_super_blk, 931 blk64_t *ret_old_desc_blk, 932 blk64_t *ret_new_desc_blk, 933 blk_t *ret_used_blks); 934extern int ext2fs_super_and_bgd_loc(ext2_filsys fs, 935 dgrp_t group, 936 blk_t *ret_super_blk, 937 blk_t *ret_old_desc_blk, 938 blk_t *ret_new_desc_blk, 939 int *ret_meta_bg); 940extern void ext2fs_update_dynamic_rev(ext2_filsys fs); 941 942/* crc32c.c */ 943extern __u32 ext2fs_crc32c_be(__u32 crc, unsigned char const *p, size_t len); 944extern __u32 ext2fs_crc32c_le(__u32 crc, unsigned char const *p, size_t len); 945 946/* csum.c */ 947extern void ext2fs_group_desc_csum_set(ext2_filsys fs, dgrp_t group); 948extern int ext2fs_group_desc_csum_verify(ext2_filsys fs, dgrp_t group); 949extern errcode_t ext2fs_set_gdt_csum(ext2_filsys fs); 950 951/* dblist.c */ 952 953extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs); 954extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist); 955extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ext2_ino_t ino, 956 blk_t blk, int blockcnt); 957extern errcode_t ext2fs_add_dir_block2(ext2_dblist dblist, ext2_ino_t ino, 958 blk64_t blk, e2_blkcnt_t blockcnt); 959extern void ext2fs_dblist_sort(ext2_dblist dblist, 960 EXT2_QSORT_TYPE (*sortfunc)(const void *, 961 const void *)); 962extern void ext2fs_dblist_sort2(ext2_dblist dblist, 963 EXT2_QSORT_TYPE (*sortfunc)(const void *, 964 const void *)); 965extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist, 966 int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info, 967 void *priv_data), 968 void *priv_data); 969extern errcode_t ext2fs_dblist_iterate2(ext2_dblist dblist, 970 int (*func)(ext2_filsys fs, struct ext2_db_entry2 *db_info, 971 void *priv_data), 972 void *priv_data); 973extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ext2_ino_t ino, 974 blk_t blk, int blockcnt); 975extern errcode_t ext2fs_set_dir_block2(ext2_dblist dblist, ext2_ino_t ino, 976 blk64_t blk, e2_blkcnt_t blockcnt); 977extern errcode_t ext2fs_copy_dblist(ext2_dblist src, 978 ext2_dblist *dest); 979extern int ext2fs_dblist_count(ext2_dblist dblist); 980extern blk64_t ext2fs_dblist_count2(ext2_dblist dblist); 981extern errcode_t ext2fs_dblist_get_last(ext2_dblist dblist, 982 struct ext2_db_entry **entry); 983extern errcode_t ext2fs_dblist_get_last2(ext2_dblist dblist, 984 struct ext2_db_entry2 **entry); 985extern errcode_t ext2fs_dblist_drop_last(ext2_dblist dblist); 986 987/* dblist_dir.c */ 988extern errcode_t 989 ext2fs_dblist_dir_iterate(ext2_dblist dblist, 990 int flags, 991 char *block_buf, 992 int (*func)(ext2_ino_t dir, 993 int entry, 994 struct ext2_dir_entry *dirent, 995 int offset, 996 int blocksize, 997 char *buf, 998 void *priv_data), 999 void *priv_data); 1000 1001/* dirblock.c */ 1002extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block, 1003 void *buf); 1004extern errcode_t ext2fs_read_dir_block2(ext2_filsys fs, blk_t block, 1005 void *buf, int flags); 1006extern errcode_t ext2fs_read_dir_block3(ext2_filsys fs, blk64_t block, 1007 void *buf, int flags); 1008extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block, 1009 void *buf); 1010extern errcode_t ext2fs_write_dir_block2(ext2_filsys fs, blk_t block, 1011 void *buf, int flags); 1012extern errcode_t ext2fs_write_dir_block3(ext2_filsys fs, blk64_t block, 1013 void *buf, int flags); 1014 1015/* dirhash.c */ 1016extern errcode_t ext2fs_dirhash(int version, const char *name, int len, 1017 const __u32 *seed, 1018 ext2_dirhash_t *ret_hash, 1019 ext2_dirhash_t *ret_minor_hash); 1020 1021 1022/* dir_iterate.c */ 1023extern errcode_t ext2fs_get_rec_len(ext2_filsys fs, 1024 struct ext2_dir_entry *dirent, 1025 unsigned int *rec_len); 1026extern errcode_t ext2fs_set_rec_len(ext2_filsys fs, 1027 unsigned int len, 1028 struct ext2_dir_entry *dirent); 1029extern errcode_t ext2fs_dir_iterate(ext2_filsys fs, 1030 ext2_ino_t dir, 1031 int flags, 1032 char *block_buf, 1033 int (*func)(struct ext2_dir_entry *dirent, 1034 int offset, 1035 int blocksize, 1036 char *buf, 1037 void *priv_data), 1038 void *priv_data); 1039extern errcode_t ext2fs_dir_iterate2(ext2_filsys fs, 1040 ext2_ino_t dir, 1041 int flags, 1042 char *block_buf, 1043 int (*func)(ext2_ino_t dir, 1044 int entry, 1045 struct ext2_dir_entry *dirent, 1046 int offset, 1047 int blocksize, 1048 char *buf, 1049 void *priv_data), 1050 void *priv_data); 1051 1052/* dupfs.c */ 1053extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest); 1054 1055/* expanddir.c */ 1056extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir); 1057 1058/* ext_attr.c */ 1059extern __u32 ext2fs_ext_attr_hash_entry(struct ext2_ext_attr_entry *entry, 1060 void *data); 1061extern errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf); 1062extern errcode_t ext2fs_read_ext_attr2(ext2_filsys fs, blk64_t block, 1063 void *buf); 1064extern errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block, 1065 void *buf); 1066extern errcode_t ext2fs_write_ext_attr2(ext2_filsys fs, blk64_t block, 1067 void *buf); 1068extern errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk, 1069 char *block_buf, 1070 int adjust, __u32 *newcount); 1071extern errcode_t ext2fs_adjust_ea_refcount2(ext2_filsys fs, blk64_t blk, 1072 char *block_buf, 1073 int adjust, __u32 *newcount); 1074 1075/* extent.c */ 1076extern errcode_t ext2fs_extent_header_verify(void *ptr, int size); 1077extern errcode_t ext2fs_extent_open(ext2_filsys fs, ext2_ino_t ino, 1078 ext2_extent_handle_t *handle); 1079extern errcode_t ext2fs_extent_open2(ext2_filsys fs, ext2_ino_t ino, 1080 struct ext2_inode *inode, 1081 ext2_extent_handle_t *ret_handle); 1082extern void ext2fs_extent_free(ext2_extent_handle_t handle); 1083extern errcode_t ext2fs_extent_get(ext2_extent_handle_t handle, 1084 int flags, struct ext2fs_extent *extent); 1085extern errcode_t ext2fs_extent_replace(ext2_extent_handle_t handle, int flags, 1086 struct ext2fs_extent *extent); 1087extern errcode_t ext2fs_extent_insert(ext2_extent_handle_t handle, int flags, 1088 struct ext2fs_extent *extent); 1089extern errcode_t ext2fs_extent_set_bmap(ext2_extent_handle_t handle, 1090 blk64_t logical, blk64_t physical, 1091 int flags); 1092extern errcode_t ext2fs_extent_delete(ext2_extent_handle_t handle, int flags); 1093extern errcode_t ext2fs_extent_get_info(ext2_extent_handle_t handle, 1094 struct ext2_extent_info *info); 1095extern errcode_t ext2fs_extent_goto(ext2_extent_handle_t handle, 1096 blk64_t blk); 1097 1098/* fileio.c */ 1099extern errcode_t ext2fs_file_open2(ext2_filsys fs, ext2_ino_t ino, 1100 struct ext2_inode *inode, 1101 int flags, ext2_file_t *ret); 1102extern errcode_t ext2fs_file_open(ext2_filsys fs, ext2_ino_t ino, 1103 int flags, ext2_file_t *ret); 1104extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file); 1105struct ext2_inode *ext2fs_file_get_inode(ext2_file_t file); 1106extern errcode_t ext2fs_file_close(ext2_file_t file); 1107extern errcode_t ext2fs_file_flush(ext2_file_t file); 1108extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf, 1109 unsigned int wanted, unsigned int *got); 1110extern errcode_t ext2fs_file_write(ext2_file_t file, const void *buf, 1111 unsigned int nbytes, unsigned int *written); 1112extern errcode_t ext2fs_file_llseek(ext2_file_t file, __u64 offset, 1113 int whence, __u64 *ret_pos); 1114extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset, 1115 int whence, ext2_off_t *ret_pos); 1116errcode_t ext2fs_file_get_lsize(ext2_file_t file, __u64 *ret_size); 1117extern ext2_off_t ext2fs_file_get_size(ext2_file_t file); 1118extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size); 1119extern errcode_t ext2fs_file_set_size2(ext2_file_t file, ext2_off64_t size); 1120 1121/* finddev.c */ 1122extern char *ext2fs_find_block_device(dev_t device); 1123 1124/* flushb.c */ 1125extern errcode_t ext2fs_sync_device(int fd, int flushb); 1126 1127/* freefs.c */ 1128extern void ext2fs_free(ext2_filsys fs); 1129extern void ext2fs_free_dblist(ext2_dblist dblist); 1130extern void ext2fs_badblocks_list_free(ext2_badblocks_list bb); 1131extern void ext2fs_u32_list_free(ext2_u32_list bb); 1132 1133/* gen_bitmap.c */ 1134extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap); 1135extern errcode_t ext2fs_make_generic_bitmap(errcode_t magic, ext2_filsys fs, 1136 __u32 start, __u32 end, 1137 __u32 real_end, 1138 const char *descr, char *init_map, 1139 ext2fs_generic_bitmap *ret); 1140extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start, 1141 __u32 end, 1142 __u32 real_end, 1143 const char *descr, 1144 ext2fs_generic_bitmap *ret); 1145extern errcode_t ext2fs_copy_generic_bitmap(ext2fs_generic_bitmap src, 1146 ext2fs_generic_bitmap *dest); 1147extern void ext2fs_clear_generic_bitmap(ext2fs_generic_bitmap bitmap); 1148extern errcode_t ext2fs_fudge_generic_bitmap_end(ext2fs_inode_bitmap bitmap, 1149 errcode_t magic, 1150 errcode_t neq, 1151 ext2_ino_t end, 1152 ext2_ino_t *oend); 1153extern void ext2fs_set_generic_bitmap_padding(ext2fs_generic_bitmap map); 1154extern errcode_t ext2fs_resize_generic_bitmap(errcode_t magic, 1155 __u32 new_end, 1156 __u32 new_real_end, 1157 ext2fs_generic_bitmap bmap); 1158extern errcode_t ext2fs_compare_generic_bitmap(errcode_t magic, errcode_t neq, 1159 ext2fs_generic_bitmap bm1, 1160 ext2fs_generic_bitmap bm2); 1161extern errcode_t ext2fs_get_generic_bitmap_range(ext2fs_generic_bitmap bmap, 1162 errcode_t magic, 1163 __u32 start, __u32 num, 1164 void *out); 1165extern errcode_t ext2fs_set_generic_bitmap_range(ext2fs_generic_bitmap bmap, 1166 errcode_t magic, 1167 __u32 start, __u32 num, 1168 void *in); 1169 1170/* gen_bitmap64.c */ 1171void ext2fs_free_generic_bmap(ext2fs_generic_bitmap bmap); 1172errcode_t ext2fs_alloc_generic_bmap(ext2_filsys fs, errcode_t magic, 1173 int type, __u64 start, __u64 end, 1174 __u64 real_end, 1175 const char *descr, 1176 ext2fs_generic_bitmap *ret); 1177errcode_t ext2fs_copy_generic_bmap(ext2fs_generic_bitmap src, 1178 ext2fs_generic_bitmap *dest); 1179void ext2fs_clear_generic_bmap(ext2fs_generic_bitmap bitmap); 1180errcode_t ext2fs_fudge_generic_bmap_end(ext2fs_generic_bitmap bitmap, 1181 errcode_t neq, 1182 __u64 end, __u64 *oend); 1183void ext2fs_set_generic_bmap_padding(ext2fs_generic_bitmap bmap); 1184errcode_t ext2fs_resize_generic_bmap(ext2fs_generic_bitmap bmap, 1185 __u64 new_end, 1186 __u64 new_real_end); 1187errcode_t ext2fs_compare_generic_bmap(errcode_t neq, 1188 ext2fs_generic_bitmap bm1, 1189 ext2fs_generic_bitmap bm2); 1190errcode_t ext2fs_get_generic_bmap_range(ext2fs_generic_bitmap bmap, 1191 __u64 start, unsigned int num, 1192 void *out); 1193errcode_t ext2fs_set_generic_bmap_range(ext2fs_generic_bitmap bmap, 1194 __u64 start, unsigned int num, 1195 void *in); 1196errcode_t ext2fs_convert_subcluster_bitmap(ext2_filsys fs, 1197 ext2fs_block_bitmap *bitmap); 1198 1199/* getsize.c */ 1200extern errcode_t ext2fs_get_device_size(const char *file, int blocksize, 1201 blk_t *retblocks); 1202extern errcode_t ext2fs_get_device_size2(const char *file, int blocksize, 1203 blk64_t *retblocks); 1204 1205/* getsectsize.c */ 1206errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize); 1207errcode_t ext2fs_get_device_phys_sectsize(const char *file, int *sectsize); 1208 1209/* i_block.c */ 1210errcode_t ext2fs_iblk_add_blocks(ext2_filsys fs, struct ext2_inode *inode, 1211 blk64_t num_blocks); 1212errcode_t ext2fs_iblk_sub_blocks(ext2_filsys fs, struct ext2_inode *inode, 1213 blk64_t num_blocks); 1214errcode_t ext2fs_iblk_set(ext2_filsys fs, struct ext2_inode *inode, blk64_t b); 1215 1216/* imager.c */ 1217extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags); 1218extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags); 1219extern errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd, int flags); 1220extern errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd, int flags); 1221extern errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags); 1222extern errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags); 1223 1224/* ind_block.c */ 1225errcode_t ext2fs_read_ind_block(ext2_filsys fs, blk_t blk, void *buf); 1226errcode_t ext2fs_write_ind_block(ext2_filsys fs, blk_t blk, void *buf); 1227 1228/* initialize.c */ 1229extern errcode_t ext2fs_initialize(const char *name, int flags, 1230 struct ext2_super_block *param, 1231 io_manager manager, ext2_filsys *ret_fs); 1232 1233/* icount.c */ 1234extern void ext2fs_free_icount(ext2_icount_t icount); 1235extern errcode_t ext2fs_create_icount_tdb(ext2_filsys fs, char *tdb_dir, 1236 int flags, ext2_icount_t *ret); 1237extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags, 1238 unsigned int size, 1239 ext2_icount_t hint, ext2_icount_t *ret); 1240extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags, 1241 unsigned int size, 1242 ext2_icount_t *ret); 1243extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ext2_ino_t ino, 1244 __u16 *ret); 1245extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ext2_ino_t ino, 1246 __u16 *ret); 1247extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ext2_ino_t ino, 1248 __u16 *ret); 1249extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ext2_ino_t ino, 1250 __u16 count); 1251extern ext2_ino_t ext2fs_get_icount_size(ext2_icount_t icount); 1252errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *); 1253 1254/* inode.c */ 1255extern errcode_t ext2fs_flush_icache(ext2_filsys fs); 1256extern errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan, 1257 ext2_ino_t *ino, 1258 struct ext2_inode *inode, 1259 int bufsize); 1260extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks, 1261 ext2_inode_scan *ret_scan); 1262extern void ext2fs_close_inode_scan(ext2_inode_scan scan); 1263extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino, 1264 struct ext2_inode *inode); 1265extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan, 1266 int group); 1267extern void ext2fs_set_inode_callback 1268 (ext2_inode_scan scan, 1269 errcode_t (*done_group)(ext2_filsys fs, 1270 ext2_inode_scan scan, 1271 dgrp_t group, 1272 void * priv_data), 1273 void *done_group_data); 1274extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags, 1275 int clear_flags); 1276extern errcode_t ext2fs_read_inode_full(ext2_filsys fs, ext2_ino_t ino, 1277 struct ext2_inode * inode, 1278 int bufsize); 1279extern errcode_t ext2fs_read_inode (ext2_filsys fs, ext2_ino_t ino, 1280 struct ext2_inode * inode); 1281extern errcode_t ext2fs_write_inode_full(ext2_filsys fs, ext2_ino_t ino, 1282 struct ext2_inode * inode, 1283 int bufsize); 1284extern errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino, 1285 struct ext2_inode * inode); 1286extern errcode_t ext2fs_write_new_inode(ext2_filsys fs, ext2_ino_t ino, 1287 struct ext2_inode * inode); 1288extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); 1289extern errcode_t ext2fs_check_directory(ext2_filsys fs, ext2_ino_t ino); 1290 1291/* inode_io.c */ 1292extern io_manager inode_io_manager; 1293extern errcode_t ext2fs_inode_io_intern(ext2_filsys fs, ext2_ino_t ino, 1294 char **name); 1295extern errcode_t ext2fs_inode_io_intern2(ext2_filsys fs, ext2_ino_t ino, 1296 struct ext2_inode *inode, 1297 char **name); 1298 1299/* ismounted.c */ 1300extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags); 1301extern errcode_t ext2fs_check_mount_point(const char *device, int *mount_flags, 1302 char *mtpt, int mtlen); 1303 1304/* punch.c */ 1305extern errcode_t ext2fs_punch(ext2_filsys fs, ext2_ino_t ino, 1306 struct ext2_inode *inode, 1307 char *block_buf, blk64_t start, 1308 blk64_t end); 1309 1310/* namei.c */ 1311extern errcode_t ext2fs_lookup(ext2_filsys fs, ext2_ino_t dir, const char *name, 1312 int namelen, char *buf, ext2_ino_t *inode); 1313extern errcode_t ext2fs_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1314 const char *name, ext2_ino_t *inode); 1315errcode_t ext2fs_namei_follow(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1316 const char *name, ext2_ino_t *inode); 1317extern errcode_t ext2fs_follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1318 ext2_ino_t inode, ext2_ino_t *res_inode); 1319 1320/* native.c */ 1321int ext2fs_native_flag(void); 1322 1323/* newdir.c */ 1324extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino, 1325 ext2_ino_t parent_ino, char **block); 1326 1327/* mkdir.c */ 1328extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum, 1329 const char *name); 1330 1331/* mkjournal.c */ 1332extern errcode_t ext2fs_zero_blocks(ext2_filsys fs, blk_t blk, int num, 1333 blk_t *ret_blk, int *ret_count); 1334extern errcode_t ext2fs_zero_blocks2(ext2_filsys fs, blk64_t blk, int num, 1335 blk64_t *ret_blk, int *ret_count); 1336extern errcode_t ext2fs_create_journal_superblock(ext2_filsys fs, 1337 __u32 num_blocks, int flags, 1338 char **ret_jsb); 1339extern errcode_t ext2fs_add_journal_device(ext2_filsys fs, 1340 ext2_filsys journal_dev); 1341extern errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t num_blocks, 1342 int flags); 1343extern int ext2fs_default_journal_size(__u64 num_blocks); 1344 1345/* openfs.c */ 1346extern errcode_t ext2fs_open(const char *name, int flags, int superblock, 1347 unsigned int block_size, io_manager manager, 1348 ext2_filsys *ret_fs); 1349extern errcode_t ext2fs_open2(const char *name, const char *io_options, 1350 int flags, int superblock, 1351 unsigned int block_size, io_manager manager, 1352 ext2_filsys *ret_fs); 1353extern blk64_t ext2fs_descriptor_block_loc2(ext2_filsys fs, 1354 blk64_t group_block, dgrp_t i); 1355extern blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block, 1356 dgrp_t i); 1357errcode_t ext2fs_get_data_io(ext2_filsys fs, io_channel *old_io); 1358errcode_t ext2fs_set_data_io(ext2_filsys fs, io_channel new_io); 1359errcode_t ext2fs_rewrite_to_io(ext2_filsys fs, io_channel new_io); 1360 1361/* get_pathname.c */ 1362extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino, 1363 char **name); 1364 1365/* link.c */ 1366errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name, 1367 ext2_ino_t ino, int flags); 1368errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir, const char *name, 1369 ext2_ino_t ino, int flags); 1370 1371/* mmp.c */ 1372errcode_t ext2fs_mmp_read(ext2_filsys fs, blk64_t mmp_blk, void *buf); 1373errcode_t ext2fs_mmp_write(ext2_filsys fs, blk64_t mmp_blk, void *buf); 1374errcode_t ext2fs_mmp_clear(ext2_filsys fs); 1375errcode_t ext2fs_mmp_init(ext2_filsys fs); 1376errcode_t ext2fs_mmp_start(ext2_filsys fs); 1377errcode_t ext2fs_mmp_update(ext2_filsys fs); 1378errcode_t ext2fs_mmp_stop(ext2_filsys fs); 1379unsigned ext2fs_mmp_new_seq(void); 1380 1381/* read_bb.c */ 1382extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs, 1383 ext2_badblocks_list *bb_list); 1384 1385/* read_bb_file.c */ 1386extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f, 1387 ext2_badblocks_list *bb_list, 1388 void *priv_data, 1389 void (*invalid)(ext2_filsys fs, 1390 blk_t blk, 1391 char *badstr, 1392 void *priv_data)); 1393extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f, 1394 ext2_badblocks_list *bb_list, 1395 void (*invalid)(ext2_filsys fs, 1396 blk_t blk)); 1397 1398/* res_gdt.c */ 1399extern errcode_t ext2fs_create_resize_inode(ext2_filsys fs); 1400 1401/* swapfs.c */ 1402extern void ext2fs_swap_ext_attr(char *to, char *from, int bufsize, 1403 int has_header); 1404extern void ext2fs_swap_ext_attr_header(struct ext2_ext_attr_header *to_header, 1405 struct ext2_ext_attr_header *from_hdr); 1406extern void ext2fs_swap_ext_attr_entry(struct ext2_ext_attr_entry *to_entry, 1407 struct ext2_ext_attr_entry *from_entry); 1408extern void ext2fs_swap_super(struct ext2_super_block * super); 1409extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp); 1410extern void ext2fs_swap_group_desc2(ext2_filsys, struct ext2_group_desc *gdp); 1411extern void ext2fs_swap_inode_full(ext2_filsys fs, struct ext2_inode_large *t, 1412 struct ext2_inode_large *f, int hostorder, 1413 int bufsize); 1414extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t, 1415 struct ext2_inode *f, int hostorder); 1416extern void ext2fs_swap_mmp(struct mmp_struct *mmp); 1417 1418/* valid_blk.c */ 1419extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode); 1420extern int ext2fs_inode_has_valid_blocks2(ext2_filsys fs, 1421 struct ext2_inode *inode); 1422 1423/* version.c */ 1424extern int ext2fs_parse_version_string(const char *ver_string); 1425extern int ext2fs_get_library_version(const char **ver_string, 1426 const char **date_string); 1427 1428/* write_bb_file.c */ 1429extern errcode_t ext2fs_write_bb_FILE(ext2_badblocks_list bb_list, 1430 unsigned int flags, 1431 FILE *f); 1432 1433 1434/* inline functions */ 1435extern errcode_t ext2fs_get_mem(unsigned long size, void *ptr); 1436extern errcode_t ext2fs_get_memalign(unsigned long size, 1437 unsigned long align, void *ptr); 1438extern errcode_t ext2fs_get_memzero(unsigned long size, void *ptr); 1439extern errcode_t ext2fs_get_array(unsigned long count, 1440 unsigned long size, void *ptr); 1441extern errcode_t ext2fs_get_arrayzero(unsigned long count, 1442 unsigned long size, void *ptr); 1443extern errcode_t ext2fs_free_mem(void *ptr); 1444extern errcode_t ext2fs_resize_mem(unsigned long old_size, 1445 unsigned long size, void *ptr); 1446extern void ext2fs_mark_super_dirty(ext2_filsys fs); 1447extern void ext2fs_mark_changed(ext2_filsys fs); 1448extern int ext2fs_test_changed(ext2_filsys fs); 1449extern void ext2fs_mark_valid(ext2_filsys fs); 1450extern void ext2fs_unmark_valid(ext2_filsys fs); 1451extern int ext2fs_test_valid(ext2_filsys fs); 1452extern void ext2fs_mark_ib_dirty(ext2_filsys fs); 1453extern void ext2fs_mark_bb_dirty(ext2_filsys fs); 1454extern int ext2fs_test_ib_dirty(ext2_filsys fs); 1455extern int ext2fs_test_bb_dirty(ext2_filsys fs); 1456extern int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk); 1457extern int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino); 1458extern blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group); 1459extern blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group); 1460extern blk_t ext2fs_inode_data_blocks(ext2_filsys fs, 1461 struct ext2_inode *inode); 1462extern unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b); 1463extern __u64 ext2fs_div64_ceil(__u64 a, __u64 b); 1464extern int ext2fs_open_file(const char *pathname, int flags, mode_t mode); 1465extern int ext2fs_stat(const char *path, ext2fs_struct_stat *buf); 1466extern int ext2fs_fstat(int fd, ext2fs_struct_stat *buf); 1467 1468/* 1469 * The actual inlined functions definitions themselves... 1470 * 1471 * If NO_INLINE_FUNCS is defined, then we won't try to do inline 1472 * functions at all! 1473 */ 1474#if (defined(INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS)) 1475#ifdef INCLUDE_INLINE_FUNCS 1476#define _INLINE_ extern 1477#else 1478#ifdef __GNUC__ 1479#define _INLINE_ extern __inline__ 1480#else /* For Watcom C */ 1481#define _INLINE_ extern inline 1482#endif 1483#endif 1484 1485#ifndef EXT2_CUSTOM_MEMORY_ROUTINES 1486#include <string.h> 1487/* 1488 * Allocate memory 1489 */ 1490_INLINE_ errcode_t ext2fs_get_mem(unsigned long size, void *ptr) 1491{ 1492 void *pp; 1493 1494 pp = malloc(size); 1495 if (!pp) 1496 return EXT2_ET_NO_MEMORY; 1497 memcpy(ptr, &pp, sizeof (pp)); 1498 return 0; 1499} 1500 1501_INLINE_ errcode_t ext2fs_get_memzero(unsigned long size, void *ptr) 1502{ 1503 void *pp; 1504 1505 pp = malloc(size); 1506 if (!pp) 1507 return EXT2_ET_NO_MEMORY; 1508 memset(pp, 0, size); 1509 memcpy(ptr, &pp, sizeof(pp)); 1510 return 0; 1511} 1512 1513_INLINE_ errcode_t ext2fs_get_array(unsigned long count, unsigned long size, void *ptr) 1514{ 1515 if (count && (-1UL)/count<size) 1516 return EXT2_ET_NO_MEMORY; 1517 return ext2fs_get_mem(count*size, ptr); 1518} 1519 1520_INLINE_ errcode_t ext2fs_get_arrayzero(unsigned long count, 1521 unsigned long size, void *ptr) 1522{ 1523 void *pp; 1524 1525 if (count && (-1UL)/count<size) 1526 return EXT2_ET_NO_MEMORY; 1527 pp = calloc(count, size); 1528 if (!pp) 1529 return EXT2_ET_NO_MEMORY; 1530 memcpy(ptr, &pp, sizeof(pp)); 1531 return 0; 1532} 1533 1534/* 1535 * Free memory 1536 */ 1537_INLINE_ errcode_t ext2fs_free_mem(void *ptr) 1538{ 1539 void *p; 1540 1541 memcpy(&p, ptr, sizeof(p)); 1542 free(p); 1543 p = 0; 1544 memcpy(ptr, &p, sizeof(p)); 1545 return 0; 1546} 1547 1548/* 1549 * Resize memory 1550 */ 1551_INLINE_ errcode_t ext2fs_resize_mem(unsigned long EXT2FS_ATTR((unused)) old_size, 1552 unsigned long size, void *ptr) 1553{ 1554 void *p; 1555 1556 /* Use "memcpy" for pointer assignments here to avoid problems 1557 * with C99 strict type aliasing rules. */ 1558 memcpy(&p, ptr, sizeof(p)); 1559 p = realloc(p, size); 1560 if (!p) 1561 return EXT2_ET_NO_MEMORY; 1562 memcpy(ptr, &p, sizeof(p)); 1563 return 0; 1564} 1565#endif /* Custom memory routines */ 1566 1567/* 1568 * Mark a filesystem superblock as dirty 1569 */ 1570_INLINE_ void ext2fs_mark_super_dirty(ext2_filsys fs) 1571{ 1572 fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_CHANGED; 1573} 1574 1575/* 1576 * Mark a filesystem as changed 1577 */ 1578_INLINE_ void ext2fs_mark_changed(ext2_filsys fs) 1579{ 1580 fs->flags |= EXT2_FLAG_CHANGED; 1581} 1582 1583/* 1584 * Check to see if a filesystem has changed 1585 */ 1586_INLINE_ int ext2fs_test_changed(ext2_filsys fs) 1587{ 1588 return (fs->flags & EXT2_FLAG_CHANGED); 1589} 1590 1591/* 1592 * Mark a filesystem as valid 1593 */ 1594_INLINE_ void ext2fs_mark_valid(ext2_filsys fs) 1595{ 1596 fs->flags |= EXT2_FLAG_VALID; 1597} 1598 1599/* 1600 * Mark a filesystem as NOT valid 1601 */ 1602_INLINE_ void ext2fs_unmark_valid(ext2_filsys fs) 1603{ 1604 fs->flags &= ~EXT2_FLAG_VALID; 1605} 1606 1607/* 1608 * Check to see if a filesystem is valid 1609 */ 1610_INLINE_ int ext2fs_test_valid(ext2_filsys fs) 1611{ 1612 return (fs->flags & EXT2_FLAG_VALID); 1613} 1614 1615/* 1616 * Mark the inode bitmap as dirty 1617 */ 1618_INLINE_ void ext2fs_mark_ib_dirty(ext2_filsys fs) 1619{ 1620 fs->flags |= EXT2_FLAG_IB_DIRTY | EXT2_FLAG_CHANGED; 1621} 1622 1623/* 1624 * Mark the block bitmap as dirty 1625 */ 1626_INLINE_ void ext2fs_mark_bb_dirty(ext2_filsys fs) 1627{ 1628 fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_CHANGED; 1629} 1630 1631/* 1632 * Check to see if a filesystem's inode bitmap is dirty 1633 */ 1634_INLINE_ int ext2fs_test_ib_dirty(ext2_filsys fs) 1635{ 1636 return (fs->flags & EXT2_FLAG_IB_DIRTY); 1637} 1638 1639/* 1640 * Check to see if a filesystem's block bitmap is dirty 1641 */ 1642_INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs) 1643{ 1644 return (fs->flags & EXT2_FLAG_BB_DIRTY); 1645} 1646 1647/* 1648 * Return the group # of a block 1649 */ 1650_INLINE_ int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk) 1651{ 1652 return ext2fs_group_of_blk2(fs, blk); 1653} 1654/* 1655 * Return the group # of an inode number 1656 */ 1657_INLINE_ int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino) 1658{ 1659 return (ino - 1) / fs->super->s_inodes_per_group; 1660} 1661 1662/* 1663 * Return the first block (inclusive) in a group 1664 */ 1665_INLINE_ blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group) 1666{ 1667 return ext2fs_group_first_block2(fs, group); 1668} 1669 1670/* 1671 * Return the last block (inclusive) in a group 1672 */ 1673_INLINE_ blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group) 1674{ 1675 return ext2fs_group_last_block2(fs, group); 1676} 1677 1678_INLINE_ blk_t ext2fs_inode_data_blocks(ext2_filsys fs, 1679 struct ext2_inode *inode) 1680{ 1681 return ext2fs_inode_data_blocks2(fs, inode); 1682} 1683 1684/* 1685 * This is an efficient, overflow safe way of calculating ceil((1.0 * a) / b) 1686 */ 1687_INLINE_ unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b) 1688{ 1689 if (!a) 1690 return 0; 1691 return ((a - 1) / b) + 1; 1692} 1693 1694_INLINE_ __u64 ext2fs_div64_ceil(__u64 a, __u64 b) 1695{ 1696 if (!a) 1697 return 0; 1698 return ((a - 1) / b) + 1; 1699} 1700 1701_INLINE_ int ext2fs_open_file(const char *pathname, int flags, mode_t mode) 1702{ 1703 va_list args; 1704 1705 if (mode) 1706#if defined(HAVE_OPEN64) && !defined(__OSX_AVAILABLE_BUT_DEPRECATED) 1707 return open64(pathname, flags, mode); 1708 else 1709 return open64(pathname, flags); 1710#else 1711 return open(pathname, flags, mode); 1712 else 1713 return open(pathname, flags); 1714#endif 1715} 1716 1717_INLINE_ int ext2fs_stat(const char *path, ext2fs_struct_stat *buf) 1718{ 1719#if defined(HAVE_FSTAT64) && !defined(__OSX_AVAILABLE_BUT_DEPRECATED) 1720 return stat64(path, buf); 1721#else 1722 return stat(path, buf); 1723#endif 1724} 1725 1726_INLINE_ int ext2fs_fstat(int fd, ext2fs_struct_stat *buf) 1727{ 1728#if defined(HAVE_FSTAT64) && !defined(__OSX_AVAILABLE_BUT_DEPRECATED) 1729 return fstat64(fd, buf); 1730#else 1731 return fstat(fd, buf); 1732#endif 1733} 1734 1735#undef _INLINE_ 1736#endif 1737 1738#ifdef __cplusplus 1739} 1740#endif 1741 1742#endif /* _EXT2FS_EXT2FS_H */ 1743