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 22 extern "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 /* 33 * The Apple compiler in Xcode 4.3 fails when inlines are enabled in 34 * so disable them for that compiler. 35 */ 36 #if __APPLE_CC__ >= 5621 37 #define NO_INLINE_FUNCS 38 #endif 39 40 /* 41 * Where the master copy of the superblock is located, and how big 42 * superblocks are supposed to be. We define SUPERBLOCK_SIZE because 43 * the size of the superblock structure is not necessarily trustworthy 44 * (some versions have the padding set up so that the superblock is 45 * 1032 bytes long). 46 */ 47 #define SUPERBLOCK_OFFSET 1024 48 #define SUPERBLOCK_SIZE 1024 49 50 /* 51 * The last ext2fs revision level that this version of the library is 52 * able to support. 53 */ 54 #define EXT2_LIB_CURRENT_REV EXT2_DYNAMIC_REV 55 56 #ifdef HAVE_SYS_TYPES_H 57 #include <sys/types.h> 58 #endif 59 60 #include <stdio.h> 61 #include <stdlib.h> 62 #include <string.h> 63 #include <errno.h> 64 65 #if EXT2_FLAT_INCLUDES 66 #include "e2_types.h" 67 #include "ext2_fs.h" 68 #include "ext3_extents.h" 69 #else 70 #include <ext2fs/ext2_types.h> 71 #include <ext2fs/ext2_fs.h> 72 #include <ext2fs/ext3_extents.h> 73 #endif /* EXT2_FLAT_INCLUDES */ 74 75 typedef __u32 ext2_ino_t; 76 typedef __u32 blk_t; 77 typedef __u64 blk64_t; 78 typedef __u32 dgrp_t; 79 typedef __u32 ext2_off_t; 80 typedef __s64 e2_blkcnt_t; 81 typedef __u32 ext2_dirhash_t; 82 83 #if EXT2_FLAT_INCLUDES 84 #include "com_err.h" 85 #include "ext2_io.h" 86 #include "ext2_err.h" 87 #include "ext2_ext_attr.h" 88 #else 89 #include <et/com_err.h> 90 #include <ext2fs/ext2_io.h> 91 #include <ext2fs/ext2_err.h> 92 #include <ext2fs/ext2_ext_attr.h> 93 #endif 94 95 /* 96 * Portability help for Microsoft Visual C++ 97 */ 98 #ifdef _MSC_VER 99 #define EXT2_QSORT_TYPE int __cdecl 100 #else 101 #define EXT2_QSORT_TYPE int 102 #endif 103 104 typedef struct struct_ext2_filsys *ext2_filsys; 105 106 #define EXT2FS_MARK_ERROR 0 107 #define EXT2FS_UNMARK_ERROR 1 108 #define EXT2FS_TEST_ERROR 2 109 110 typedef struct ext2fs_struct_generic_bitmap *ext2fs_generic_bitmap; 111 typedef struct ext2fs_struct_generic_bitmap *ext2fs_inode_bitmap; 112 typedef struct ext2fs_struct_generic_bitmap *ext2fs_block_bitmap; 113 114 #define EXT2_FIRST_INODE(s) EXT2_FIRST_INO(s) 115 116 117 /* 118 * Badblocks list definitions 119 */ 120 121 typedef struct ext2_struct_u32_list *ext2_badblocks_list; 122 typedef struct ext2_struct_u32_iterate *ext2_badblocks_iterate; 123 124 typedef struct ext2_struct_u32_list *ext2_u32_list; 125 typedef struct ext2_struct_u32_iterate *ext2_u32_iterate; 126 127 /* old */ 128 typedef struct ext2_struct_u32_list *badblocks_list; 129 typedef struct ext2_struct_u32_iterate *badblocks_iterate; 130 131 #define BADBLOCKS_FLAG_DIRTY 1 132 133 /* 134 * ext2_dblist structure and abstractions (see dblist.c) 135 */ 136 struct ext2_db_entry { 137 ext2_ino_t ino; 138 blk_t blk; 139 int blockcnt; 140 }; 141 142 typedef struct ext2_struct_dblist *ext2_dblist; 143 144 #define DBLIST_ABORT 1 145 146 /* 147 * ext2_fileio definitions 148 */ 149 150 #define EXT2_FILE_WRITE 0x0001 151 #define EXT2_FILE_CREATE 0x0002 152 153 #define EXT2_FILE_MASK 0x00FF 154 155 #define EXT2_FILE_BUF_DIRTY 0x4000 156 #define EXT2_FILE_BUF_VALID 0x2000 157 158 typedef struct ext2_file *ext2_file_t; 159 160 #define EXT2_SEEK_SET 0 161 #define EXT2_SEEK_CUR 1 162 #define EXT2_SEEK_END 2 163 164 /* 165 * Flags for the ext2_filsys structure and for ext2fs_open() 166 */ 167 #define EXT2_FLAG_RW 0x01 168 #define EXT2_FLAG_CHANGED 0x02 169 #define EXT2_FLAG_DIRTY 0x04 170 #define EXT2_FLAG_VALID 0x08 171 #define EXT2_FLAG_IB_DIRTY 0x10 172 #define EXT2_FLAG_BB_DIRTY 0x20 173 #define EXT2_FLAG_SWAP_BYTES 0x40 174 #define EXT2_FLAG_SWAP_BYTES_READ 0x80 175 #define EXT2_FLAG_SWAP_BYTES_WRITE 0x100 176 #define EXT2_FLAG_MASTER_SB_ONLY 0x200 177 #define EXT2_FLAG_FORCE 0x400 178 #define EXT2_FLAG_SUPER_ONLY 0x800 179 #define EXT2_FLAG_JOURNAL_DEV_OK 0x1000 180 #define EXT2_FLAG_IMAGE_FILE 0x2000 181 #define EXT2_FLAG_EXCLUSIVE 0x4000 182 #define EXT2_FLAG_SOFTSUPP_FEATURES 0x8000 183 #define EXT2_FLAG_NOFREE_ON_ERROR 0x10000 184 #define EXT2_FLAG_DIRECT_IO 0x80000 185 186 /* 187 * Special flag in the ext2 inode i_flag field that means that this is 188 * a new inode. (So that ext2_write_inode() can clear extra fields.) 189 */ 190 #define EXT2_NEW_INODE_FL 0x80000000 191 192 /* 193 * Flags for mkjournal 194 * 195 * EXT2_MKJOURNAL_V1_SUPER Make a (deprecated) V1 journal superblock 196 */ 197 #define EXT2_MKJOURNAL_V1_SUPER 0x0000001 198 199 struct struct_ext2_filsys { 200 errcode_t magic; 201 io_channel io; 202 int flags; 203 char * device_name; 204 struct ext2_super_block * super; 205 unsigned int blocksize; 206 int fragsize; 207 dgrp_t group_desc_count; 208 unsigned long desc_blocks; 209 struct ext2_group_desc * group_desc; 210 int inode_blocks_per_group; 211 ext2fs_inode_bitmap inode_map; 212 ext2fs_block_bitmap block_map; 213 errcode_t (*get_blocks)(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); 214 errcode_t (*check_directory)(ext2_filsys fs, ext2_ino_t ino); 215 errcode_t (*write_bitmaps)(ext2_filsys fs); 216 errcode_t (*read_inode)(ext2_filsys fs, ext2_ino_t ino, 217 struct ext2_inode *inode); 218 errcode_t (*write_inode)(ext2_filsys fs, ext2_ino_t ino, 219 struct ext2_inode *inode); 220 ext2_badblocks_list badblocks; 221 ext2_dblist dblist; 222 __u32 stride; /* for mke2fs */ 223 struct ext2_super_block * orig_super; 224 struct ext2_image_hdr * image_header; 225 __u32 umask; 226 time_t now; 227 /* 228 * Reserved for future expansion 229 */ 230 __u32 reserved[7]; 231 232 /* 233 * Reserved for the use of the calling application. 234 */ 235 void * priv_data; 236 237 /* 238 * Inode cache 239 */ 240 struct ext2_inode_cache *icache; 241 io_channel image_io; 242 243 /* 244 * More callback functions 245 */ 246 errcode_t (*get_alloc_block)(ext2_filsys fs, blk64_t goal, 247 blk64_t *ret); 248 void (*block_alloc_stats)(ext2_filsys fs, blk64_t blk, int inuse); 249 }; 250 251 #if EXT2_FLAT_INCLUDES 252 #include "e2_bitops.h" 253 #else 254 #include <ext2fs/bitops.h> 255 #endif 256 257 /* 258 * Return flags for the block iterator functions 259 */ 260 #define BLOCK_CHANGED 1 261 #define BLOCK_ABORT 2 262 #define BLOCK_ERROR 4 263 264 /* 265 * Block interate flags 266 * 267 * BLOCK_FLAG_APPEND, or BLOCK_FLAG_HOLE, indicates that the interator 268 * function should be called on blocks where the block number is zero. 269 * This is used by ext2fs_expand_dir() to be able to add a new block 270 * to an inode. It can also be used for programs that want to be able 271 * to deal with files that contain "holes". 272 * 273 * BLOCK_FLAG_DEPTH_TRAVERSE indicates that the iterator function for 274 * the indirect, doubly indirect, etc. blocks should be called after 275 * all of the blocks containined in the indirect blocks are processed. 276 * This is useful if you are going to be deallocating blocks from an 277 * inode. 278 * 279 * BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be 280 * called for data blocks only. 281 * 282 * BLOCK_FLAG_READ_ONLY is a promise by the caller that it will not 283 * modify returned block number. 284 * 285 * BLOCK_FLAG_NO_LARGE is for internal use only. It informs 286 * ext2fs_block_iterate2 that large files won't be accepted. 287 */ 288 #define BLOCK_FLAG_APPEND 1 289 #define BLOCK_FLAG_HOLE 1 290 #define BLOCK_FLAG_DEPTH_TRAVERSE 2 291 #define BLOCK_FLAG_DATA_ONLY 4 292 #define BLOCK_FLAG_READ_ONLY 8 293 294 #define BLOCK_FLAG_NO_LARGE 0x1000 295 296 /* 297 * Magic "block count" return values for the block iterator function. 298 */ 299 #define BLOCK_COUNT_IND (-1) 300 #define BLOCK_COUNT_DIND (-2) 301 #define BLOCK_COUNT_TIND (-3) 302 #define BLOCK_COUNT_TRANSLATOR (-4) 303 304 #if 0 305 /* 306 * Flags for ext2fs_move_blocks 307 */ 308 #define EXT2_BMOVE_GET_DBLIST 0x0001 309 #define EXT2_BMOVE_DEBUG 0x0002 310 #endif 311 312 /* 313 * Generic (non-filesystem layout specific) extents structure 314 */ 315 316 #define EXT2_EXTENT_FLAGS_LEAF 0x0001 317 #define EXT2_EXTENT_FLAGS_UNINIT 0x0002 318 #define EXT2_EXTENT_FLAGS_SECOND_VISIT 0x0004 319 320 struct ext2fs_extent { 321 blk64_t e_pblk; /* first physical block */ 322 blk64_t e_lblk; /* first logical block extent covers */ 323 __u32 e_len; /* number of blocks covered by extent */ 324 __u32 e_flags; /* extent flags */ 325 }; 326 327 typedef struct ext2_extent_handle *ext2_extent_handle_t; 328 typedef struct ext2_extent_path *ext2_extent_path_t; 329 330 /* 331 * Flags used by ext2fs_extent_get() 332 */ 333 #define EXT2_EXTENT_CURRENT 0x0000 334 #define EXT2_EXTENT_MOVE_MASK 0x000F 335 #define EXT2_EXTENT_ROOT 0x0001 336 #define EXT2_EXTENT_LAST_LEAF 0x0002 337 #define EXT2_EXTENT_FIRST_SIB 0x0003 338 #define EXT2_EXTENT_LAST_SIB 0x0004 339 #define EXT2_EXTENT_NEXT_SIB 0x0005 340 #define EXT2_EXTENT_PREV_SIB 0x0006 341 #define EXT2_EXTENT_NEXT_LEAF 0x0007 342 #define EXT2_EXTENT_PREV_LEAF 0x0008 343 #define EXT2_EXTENT_NEXT 0x0009 344 #define EXT2_EXTENT_PREV 0x000A 345 #define EXT2_EXTENT_UP 0x000B 346 #define EXT2_EXTENT_DOWN 0x000C 347 #define EXT2_EXTENT_DOWN_AND_LAST 0x000D 348 349 /* 350 * Flags used by ext2fs_extent_insert() 351 */ 352 #define EXT2_EXTENT_INSERT_AFTER 0x0001 /* insert after handle loc'n */ 353 #define EXT2_EXTENT_INSERT_NOSPLIT 0x0002 /* insert may not cause split */ 354 355 /* 356 * Flags used by ext2fs_extent_delete() 357 */ 358 #define EXT2_EXTENT_DELETE_KEEP_EMPTY 0x001 /* keep node if last extnt gone */ 359 360 /* 361 * Flags used by ext2fs_extent_set_bmap() 362 */ 363 #define EXT2_EXTENT_SET_BMAP_UNINIT 0x0001 364 365 /* 366 * Data structure returned by ext2fs_extent_get_info() 367 */ 368 struct ext2_extent_info { 369 int curr_entry; 370 int curr_level; 371 int num_entries; 372 int max_entries; 373 int max_depth; 374 int bytes_avail; 375 blk64_t max_lblk; 376 blk64_t max_pblk; 377 __u32 max_len; 378 __u32 max_uninit_len; 379 }; 380 381 /* 382 * Flags for directory block reading and writing functions 383 */ 384 #define EXT2_DIRBLOCK_V2_STRUCT 0x0001 385 386 /* 387 * Return flags for the directory iterator functions 388 */ 389 #define DIRENT_CHANGED 1 390 #define DIRENT_ABORT 2 391 #define DIRENT_ERROR 3 392 393 /* 394 * Directory iterator flags 395 */ 396 397 #define DIRENT_FLAG_INCLUDE_EMPTY 1 398 #define DIRENT_FLAG_INCLUDE_REMOVED 2 399 400 #define DIRENT_DOT_FILE 1 401 #define DIRENT_DOT_DOT_FILE 2 402 #define DIRENT_OTHER_FILE 3 403 #define DIRENT_DELETED_FILE 4 404 405 /* 406 * Inode scan definitions 407 */ 408 typedef struct ext2_struct_inode_scan *ext2_inode_scan; 409 410 /* 411 * ext2fs_scan flags 412 */ 413 #define EXT2_SF_CHK_BADBLOCKS 0x0001 414 #define EXT2_SF_BAD_INODE_BLK 0x0002 415 #define EXT2_SF_BAD_EXTRA_BYTES 0x0004 416 #define EXT2_SF_SKIP_MISSING_ITABLE 0x0008 417 #define EXT2_SF_DO_LAZY 0x0010 418 419 /* 420 * ext2fs_check_if_mounted flags 421 */ 422 #define EXT2_MF_MOUNTED 1 423 #define EXT2_MF_ISROOT 2 424 #define EXT2_MF_READONLY 4 425 #define EXT2_MF_SWAP 8 426 #define EXT2_MF_BUSY 16 427 428 /* 429 * Ext2/linux mode flags. We define them here so that we don't need 430 * to depend on the OS's sys/stat.h, since we may be compiling on a 431 * non-Linux system. 432 */ 433 #define LINUX_S_IFMT 00170000 434 #define LINUX_S_IFSOCK 0140000 435 #define LINUX_S_IFLNK 0120000 436 #define LINUX_S_IFREG 0100000 437 #define LINUX_S_IFBLK 0060000 438 #define LINUX_S_IFDIR 0040000 439 #define LINUX_S_IFCHR 0020000 440 #define LINUX_S_IFIFO 0010000 441 #define LINUX_S_ISUID 0004000 442 #define LINUX_S_ISGID 0002000 443 #define LINUX_S_ISVTX 0001000 444 445 #define LINUX_S_IRWXU 00700 446 #define LINUX_S_IRUSR 00400 447 #define LINUX_S_IWUSR 00200 448 #define LINUX_S_IXUSR 00100 449 450 #define LINUX_S_IRWXG 00070 451 #define LINUX_S_IRGRP 00040 452 #define LINUX_S_IWGRP 00020 453 #define LINUX_S_IXGRP 00010 454 455 #define LINUX_S_IRWXO 00007 456 #define LINUX_S_IROTH 00004 457 #define LINUX_S_IWOTH 00002 458 #define LINUX_S_IXOTH 00001 459 460 #define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK) 461 #define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG) 462 #define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR) 463 #define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR) 464 #define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK) 465 #define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO) 466 #define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK) 467 468 /* 469 * ext2 size of an inode 470 */ 471 #define EXT2_I_SIZE(i) ((i)->i_size | ((__u64) (i)->i_size_high << 32)) 472 473 /* 474 * ext2_icount_t abstraction 475 */ 476 #define EXT2_ICOUNT_OPT_INCREMENT 0x01 477 478 typedef struct ext2_icount *ext2_icount_t; 479 480 /* 481 * Flags for ext2fs_bmap 482 */ 483 #define BMAP_ALLOC 0x0001 484 #define BMAP_SET 0x0002 485 486 /* 487 * Returned flags from ext2fs_bmap 488 */ 489 #define BMAP_RET_UNINIT 0x0001 490 491 /* 492 * Flags for imager.c functions 493 */ 494 #define IMAGER_FLAG_INODEMAP 1 495 #define IMAGER_FLAG_SPARSEWRITE 2 496 497 /* 498 * For checking structure magic numbers... 499 */ 500 501 #define EXT2_CHECK_MAGIC(struct, code) \ 502 if ((struct)->magic != (code)) return (code) 503 504 505 /* 506 * For ext2 compression support 507 */ 508 #define EXT2FS_COMPRESSED_BLKADDR ((blk_t) -1) 509 #define HOLE_BLKADDR(_b) ((_b) == 0 || (_b) == EXT2FS_COMPRESSED_BLKADDR) 510 511 /* 512 * Features supported by this version of the library 513 */ 514 #define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\ 515 EXT2_FEATURE_COMPAT_IMAGIC_INODES|\ 516 EXT3_FEATURE_COMPAT_HAS_JOURNAL|\ 517 EXT2_FEATURE_COMPAT_RESIZE_INODE|\ 518 EXT2_FEATURE_COMPAT_DIR_INDEX|\ 519 EXT2_FEATURE_COMPAT_EXT_ATTR) 520 521 /* This #ifdef is temporary until compression is fully supported */ 522 #ifdef ENABLE_COMPRESSION 523 #ifndef I_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL 524 /* If the below warning bugs you, then have 525 `CPPFLAGS=-DI_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL' in your 526 environment at configure time. */ 527 #warning "Compression support is experimental" 528 #endif 529 #define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 530 EXT2_FEATURE_INCOMPAT_COMPRESSION|\ 531 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 532 EXT2_FEATURE_INCOMPAT_META_BG|\ 533 EXT3_FEATURE_INCOMPAT_RECOVER|\ 534 EXT3_FEATURE_INCOMPAT_EXTENTS|\ 535 EXT4_FEATURE_INCOMPAT_FLEX_BG) 536 #else 537 #define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 538 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 539 EXT2_FEATURE_INCOMPAT_META_BG|\ 540 EXT3_FEATURE_INCOMPAT_RECOVER|\ 541 EXT3_FEATURE_INCOMPAT_EXTENTS|\ 542 EXT4_FEATURE_INCOMPAT_FLEX_BG) 543 #endif 544 #define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\ 545 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|\ 546 EXT2_FEATURE_RO_COMPAT_LARGE_FILE|\ 547 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|\ 548 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|\ 549 EXT4_FEATURE_RO_COMPAT_GDT_CSUM) 550 551 /* 552 * These features are only allowed if EXT2_FLAG_SOFTSUPP_FEATURES is passed 553 * to ext2fs_openfs() 554 */ 555 #define EXT2_LIB_SOFTSUPP_INCOMPAT (0) 556 #define EXT2_LIB_SOFTSUPP_RO_COMPAT (0) 557 558 /* 559 * function prototypes 560 */ 561 562 /* alloc.c */ 563 extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode, 564 ext2fs_inode_bitmap map, ext2_ino_t *ret); 565 extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal, 566 ext2fs_block_bitmap map, blk_t *ret); 567 extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start, 568 blk_t finish, int num, 569 ext2fs_block_bitmap map, 570 blk_t *ret); 571 extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal, 572 char *block_buf, blk_t *ret); 573 extern void ext2fs_set_alloc_block_callback(ext2_filsys fs, 574 errcode_t (*func)(ext2_filsys fs, 575 blk64_t goal, 576 blk64_t *ret), 577 errcode_t (**old)(ext2_filsys fs, 578 blk64_t goal, 579 blk64_t *ret)); 580 581 /* alloc_sb.c */ 582 extern int ext2fs_reserve_super_and_bgd(ext2_filsys fs, 583 dgrp_t group, 584 ext2fs_block_bitmap bmap); 585 extern void ext2fs_set_block_alloc_stats_callback(ext2_filsys fs, 586 void (*func)(ext2_filsys fs, 587 blk64_t blk, 588 int inuse), 589 void (**old)(ext2_filsys fs, 590 blk64_t blk, 591 int inuse)); 592 593 /* alloc_stats.c */ 594 void ext2fs_inode_alloc_stats(ext2_filsys fs, ext2_ino_t ino, int inuse); 595 void ext2fs_inode_alloc_stats2(ext2_filsys fs, ext2_ino_t ino, 596 int inuse, int isdir); 597 void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse); 598 599 /* alloc_tables.c */ 600 extern errcode_t ext2fs_allocate_tables(ext2_filsys fs); 601 extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group, 602 ext2fs_block_bitmap bmap); 603 604 /* badblocks.c */ 605 extern errcode_t ext2fs_u32_list_create(ext2_u32_list *ret, int size); 606 extern errcode_t ext2fs_u32_list_add(ext2_u32_list bb, __u32 blk); 607 extern int ext2fs_u32_list_find(ext2_u32_list bb, __u32 blk); 608 extern int ext2fs_u32_list_test(ext2_u32_list bb, blk_t blk); 609 extern errcode_t ext2fs_u32_list_iterate_begin(ext2_u32_list bb, 610 ext2_u32_iterate *ret); 611 extern int ext2fs_u32_list_iterate(ext2_u32_iterate iter, blk_t *blk); 612 extern void ext2fs_u32_list_iterate_end(ext2_u32_iterate iter); 613 extern errcode_t ext2fs_u32_copy(ext2_u32_list src, ext2_u32_list *dest); 614 extern int ext2fs_u32_list_equal(ext2_u32_list bb1, ext2_u32_list bb2); 615 616 extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret, 617 int size); 618 extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb, 619 blk_t blk); 620 extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb, 621 blk_t blk); 622 extern int ext2fs_u32_list_del(ext2_u32_list bb, __u32 blk); 623 extern void ext2fs_badblocks_list_del(ext2_u32_list bb, __u32 blk); 624 extern errcode_t 625 ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb, 626 ext2_badblocks_iterate *ret); 627 extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter, 628 blk_t *blk); 629 extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter); 630 extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src, 631 ext2_badblocks_list *dest); 632 extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1, 633 ext2_badblocks_list bb2); 634 extern int ext2fs_u32_list_count(ext2_u32_list bb); 635 636 /* bb_compat */ 637 extern errcode_t badblocks_list_create(badblocks_list *ret, int size); 638 extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk); 639 extern int badblocks_list_test(badblocks_list bb, blk_t blk); 640 extern errcode_t badblocks_list_iterate_begin(badblocks_list bb, 641 badblocks_iterate *ret); 642 extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk); 643 extern void badblocks_list_iterate_end(badblocks_iterate iter); 644 extern void badblocks_list_free(badblocks_list bb); 645 646 /* bb_inode.c */ 647 extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs, 648 ext2_badblocks_list bb_list); 649 650 /* bitmaps.c */ 651 extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap); 652 extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap); 653 extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src, 654 ext2fs_generic_bitmap *dest); 655 extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs); 656 extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs); 657 extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs); 658 extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs); 659 extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs, 660 const char *descr, 661 ext2fs_block_bitmap *ret); 662 extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs, 663 const char *descr, 664 ext2fs_inode_bitmap *ret); 665 extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap, 666 ext2_ino_t end, ext2_ino_t *oend); 667 extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap, 668 blk_t end, blk_t *oend); 669 extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap); 670 extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap); 671 extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs); 672 extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs); 673 extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end, 674 ext2fs_inode_bitmap bmap); 675 extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end, 676 ext2fs_block_bitmap bmap); 677 extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1, 678 ext2fs_block_bitmap bm2); 679 extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1, 680 ext2fs_inode_bitmap bm2); 681 extern errcode_t ext2fs_set_inode_bitmap_range(ext2fs_inode_bitmap bmap, 682 ext2_ino_t start, unsigned int num, 683 void *in); 684 extern errcode_t ext2fs_get_inode_bitmap_range(ext2fs_inode_bitmap bmap, 685 ext2_ino_t start, unsigned int num, 686 void *out); 687 extern errcode_t ext2fs_set_block_bitmap_range(ext2fs_block_bitmap bmap, 688 blk_t start, unsigned int num, 689 void *in); 690 extern errcode_t ext2fs_get_block_bitmap_range(ext2fs_block_bitmap bmap, 691 blk_t start, unsigned int num, 692 void *out); 693 694 695 /* block.c */ 696 extern errcode_t ext2fs_block_iterate(ext2_filsys fs, 697 ext2_ino_t ino, 698 int flags, 699 char *block_buf, 700 int (*func)(ext2_filsys fs, 701 blk_t *blocknr, 702 int blockcnt, 703 void *priv_data), 704 void *priv_data); 705 errcode_t ext2fs_block_iterate2(ext2_filsys fs, 706 ext2_ino_t ino, 707 int flags, 708 char *block_buf, 709 int (*func)(ext2_filsys fs, 710 blk_t *blocknr, 711 e2_blkcnt_t blockcnt, 712 blk_t ref_blk, 713 int ref_offset, 714 void *priv_data), 715 void *priv_data); 716 717 /* bmap.c */ 718 extern errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino, 719 struct ext2_inode *inode, 720 char *block_buf, int bmap_flags, 721 blk_t block, blk_t *phys_blk); 722 extern errcode_t ext2fs_bmap2(ext2_filsys fs, ext2_ino_t ino, 723 struct ext2_inode *inode, 724 char *block_buf, int bmap_flags, blk64_t block, 725 int *ret_flags, blk64_t *phys_blk); 726 727 #if 0 728 /* bmove.c */ 729 extern errcode_t ext2fs_move_blocks(ext2_filsys fs, 730 ext2fs_block_bitmap reserve, 731 ext2fs_block_bitmap alloc_map, 732 int flags); 733 #endif 734 735 /* check_desc.c */ 736 extern errcode_t ext2fs_check_desc(ext2_filsys fs); 737 738 /* closefs.c */ 739 extern errcode_t ext2fs_close(ext2_filsys fs); 740 extern errcode_t ext2fs_flush(ext2_filsys fs); 741 extern int ext2fs_bg_has_super(ext2_filsys fs, int group_block); 742 extern int ext2fs_super_and_bgd_loc(ext2_filsys fs, 743 dgrp_t group, 744 blk_t *ret_super_blk, 745 blk_t *ret_old_desc_blk, 746 blk_t *ret_new_desc_blk, 747 int *ret_meta_bg); 748 extern void ext2fs_update_dynamic_rev(ext2_filsys fs); 749 750 /* csum.c */ 751 extern void ext2fs_group_desc_csum_set(ext2_filsys fs, dgrp_t group); 752 extern int ext2fs_group_desc_csum_verify(ext2_filsys fs, dgrp_t group); 753 extern errcode_t ext2fs_set_gdt_csum(ext2_filsys fs); 754 755 /* dblist.c */ 756 757 extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs); 758 extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist); 759 extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ext2_ino_t ino, 760 blk_t blk, int blockcnt); 761 extern void ext2fs_dblist_sort(ext2_dblist dblist, 762 EXT2_QSORT_TYPE (*sortfunc)(const void *, 763 const void *)); 764 extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist, 765 int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info, 766 void *priv_data), 767 void *priv_data); 768 extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ext2_ino_t ino, 769 blk_t blk, int blockcnt); 770 extern errcode_t ext2fs_copy_dblist(ext2_dblist src, 771 ext2_dblist *dest); 772 extern int ext2fs_dblist_count(ext2_dblist dblist); 773 extern errcode_t ext2fs_dblist_get_last(ext2_dblist dblist, 774 struct ext2_db_entry **entry); 775 extern errcode_t ext2fs_dblist_drop_last(ext2_dblist dblist); 776 777 /* dblist_dir.c */ 778 extern errcode_t 779 ext2fs_dblist_dir_iterate(ext2_dblist dblist, 780 int flags, 781 char *block_buf, 782 int (*func)(ext2_ino_t dir, 783 int entry, 784 struct ext2_dir_entry *dirent, 785 int offset, 786 int blocksize, 787 char *buf, 788 void *priv_data), 789 void *priv_data); 790 791 /* dirblock.c */ 792 extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block, 793 void *buf); 794 extern errcode_t ext2fs_read_dir_block2(ext2_filsys fs, blk_t block, 795 void *buf, int flags); 796 extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block, 797 void *buf); 798 extern errcode_t ext2fs_write_dir_block2(ext2_filsys fs, blk_t block, 799 void *buf, int flags); 800 801 /* dirhash.c */ 802 extern errcode_t ext2fs_dirhash(int version, const char *name, int len, 803 const __u32 *seed, 804 ext2_dirhash_t *ret_hash, 805 ext2_dirhash_t *ret_minor_hash); 806 807 808 /* dir_iterate.c */ 809 extern errcode_t ext2fs_get_rec_len(ext2_filsys fs, 810 struct ext2_dir_entry *dirent, 811 unsigned int *rec_len); 812 extern errcode_t ext2fs_set_rec_len(ext2_filsys fs, 813 unsigned int len, 814 struct ext2_dir_entry *dirent); 815 extern errcode_t ext2fs_dir_iterate(ext2_filsys fs, 816 ext2_ino_t dir, 817 int flags, 818 char *block_buf, 819 int (*func)(struct ext2_dir_entry *dirent, 820 int offset, 821 int blocksize, 822 char *buf, 823 void *priv_data), 824 void *priv_data); 825 extern errcode_t ext2fs_dir_iterate2(ext2_filsys fs, 826 ext2_ino_t dir, 827 int flags, 828 char *block_buf, 829 int (*func)(ext2_ino_t dir, 830 int entry, 831 struct ext2_dir_entry *dirent, 832 int offset, 833 int blocksize, 834 char *buf, 835 void *priv_data), 836 void *priv_data); 837 838 /* dupfs.c */ 839 extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest); 840 841 /* expanddir.c */ 842 extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir); 843 844 /* ext_attr.c */ 845 extern __u32 ext2fs_ext_attr_hash_entry(struct ext2_ext_attr_entry *entry, 846 void *data); 847 extern errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf); 848 extern errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block, 849 void *buf); 850 extern errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk, 851 char *block_buf, 852 int adjust, __u32 *newcount); 853 854 /* extent.c */ 855 extern errcode_t ext2fs_extent_header_verify(void *ptr, int size); 856 extern errcode_t ext2fs_extent_open(ext2_filsys fs, ext2_ino_t ino, 857 ext2_extent_handle_t *handle); 858 extern errcode_t ext2fs_extent_open2(ext2_filsys fs, ext2_ino_t ino, 859 struct ext2_inode *inode, 860 ext2_extent_handle_t *ret_handle); 861 extern void ext2fs_extent_free(ext2_extent_handle_t handle); 862 extern errcode_t ext2fs_extent_get(ext2_extent_handle_t handle, 863 int flags, struct ext2fs_extent *extent); 864 extern errcode_t ext2fs_extent_replace(ext2_extent_handle_t handle, int flags, 865 struct ext2fs_extent *extent); 866 extern errcode_t ext2fs_extent_insert(ext2_extent_handle_t handle, int flags, 867 struct ext2fs_extent *extent); 868 extern errcode_t ext2fs_extent_set_bmap(ext2_extent_handle_t handle, 869 blk64_t logical, blk64_t physical, 870 int flags); 871 extern errcode_t ext2fs_extent_delete(ext2_extent_handle_t handle, int flags); 872 extern errcode_t ext2fs_extent_get_info(ext2_extent_handle_t handle, 873 struct ext2_extent_info *info); 874 extern errcode_t ext2fs_extent_goto(ext2_extent_handle_t handle, 875 blk64_t blk); 876 877 /* fileio.c */ 878 extern errcode_t ext2fs_file_open2(ext2_filsys fs, ext2_ino_t ino, 879 struct ext2_inode *inode, 880 int flags, ext2_file_t *ret); 881 extern errcode_t ext2fs_file_open(ext2_filsys fs, ext2_ino_t ino, 882 int flags, ext2_file_t *ret); 883 extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file); 884 extern errcode_t ext2fs_file_close(ext2_file_t file); 885 extern errcode_t ext2fs_file_flush(ext2_file_t file); 886 extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf, 887 unsigned int wanted, unsigned int *got); 888 extern errcode_t ext2fs_file_write(ext2_file_t file, const void *buf, 889 unsigned int nbytes, unsigned int *written); 890 extern errcode_t ext2fs_file_llseek(ext2_file_t file, __u64 offset, 891 int whence, __u64 *ret_pos); 892 extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset, 893 int whence, ext2_off_t *ret_pos); 894 errcode_t ext2fs_file_get_lsize(ext2_file_t file, __u64 *ret_size); 895 extern ext2_off_t ext2fs_file_get_size(ext2_file_t file); 896 extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size); 897 898 /* finddev.c */ 899 extern char *ext2fs_find_block_device(dev_t device); 900 901 /* flushb.c */ 902 extern errcode_t ext2fs_sync_device(int fd, int flushb); 903 904 /* freefs.c */ 905 extern void ext2fs_free(ext2_filsys fs); 906 extern void ext2fs_free_dblist(ext2_dblist dblist); 907 extern void ext2fs_badblocks_list_free(ext2_badblocks_list bb); 908 extern void ext2fs_u32_list_free(ext2_u32_list bb); 909 910 /* gen_bitmap.c */ 911 extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap); 912 extern errcode_t ext2fs_make_generic_bitmap(errcode_t magic, ext2_filsys fs, 913 __u32 start, __u32 end, 914 __u32 real_end, 915 const char *descr, char *init_map, 916 ext2fs_generic_bitmap *ret); 917 extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start, 918 __u32 end, 919 __u32 real_end, 920 const char *descr, 921 ext2fs_generic_bitmap *ret); 922 extern errcode_t ext2fs_copy_generic_bitmap(ext2fs_generic_bitmap src, 923 ext2fs_generic_bitmap *dest); 924 extern void ext2fs_clear_generic_bitmap(ext2fs_generic_bitmap bitmap); 925 extern errcode_t ext2fs_fudge_generic_bitmap_end(ext2fs_inode_bitmap bitmap, 926 errcode_t magic, 927 errcode_t neq, 928 ext2_ino_t end, 929 ext2_ino_t *oend); 930 extern void ext2fs_set_generic_bitmap_padding(ext2fs_generic_bitmap map); 931 extern errcode_t ext2fs_resize_generic_bitmap(errcode_t magic, 932 __u32 new_end, 933 __u32 new_real_end, 934 ext2fs_generic_bitmap bmap); 935 extern errcode_t ext2fs_compare_generic_bitmap(errcode_t magic, errcode_t neq, 936 ext2fs_generic_bitmap bm1, 937 ext2fs_generic_bitmap bm2); 938 extern errcode_t ext2fs_get_generic_bitmap_range(ext2fs_generic_bitmap bmap, 939 errcode_t magic, 940 __u32 start, __u32 num, 941 void *out); 942 extern errcode_t ext2fs_set_generic_bitmap_range(ext2fs_generic_bitmap bmap, 943 errcode_t magic, 944 __u32 start, __u32 num, 945 void *in); 946 947 /* getsize.c */ 948 extern errcode_t ext2fs_get_device_size(const char *file, int blocksize, 949 blk_t *retblocks); 950 extern errcode_t ext2fs_get_device_size2(const char *file, int blocksize, 951 blk64_t *retblocks); 952 953 /* getsectsize.c */ 954 errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize); 955 errcode_t ext2fs_get_device_phys_sectsize(const char *file, int *sectsize); 956 957 /* i_block.c */ 958 errcode_t ext2fs_iblk_add_blocks(ext2_filsys fs, struct ext2_inode *inode, 959 blk64_t num_blocks); 960 errcode_t ext2fs_iblk_sub_blocks(ext2_filsys fs, struct ext2_inode *inode, 961 blk64_t num_blocks); 962 errcode_t ext2fs_iblk_set(ext2_filsys fs, struct ext2_inode *inode, blk64_t b); 963 964 /* imager.c */ 965 extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags); 966 extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags); 967 extern errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd, int flags); 968 extern errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd, int flags); 969 extern errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags); 970 extern errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags); 971 972 /* ind_block.c */ 973 errcode_t ext2fs_read_ind_block(ext2_filsys fs, blk_t blk, void *buf); 974 errcode_t ext2fs_write_ind_block(ext2_filsys fs, blk_t blk, void *buf); 975 976 /* initialize.c */ 977 extern errcode_t ext2fs_initialize(const char *name, int flags, 978 struct ext2_super_block *param, 979 io_manager manager, ext2_filsys *ret_fs); 980 981 /* icount.c */ 982 extern void ext2fs_free_icount(ext2_icount_t icount); 983 extern errcode_t ext2fs_create_icount_tdb(ext2_filsys fs, char *tdb_dir, 984 int flags, ext2_icount_t *ret); 985 extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags, 986 unsigned int size, 987 ext2_icount_t hint, ext2_icount_t *ret); 988 extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags, 989 unsigned int size, 990 ext2_icount_t *ret); 991 extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ext2_ino_t ino, 992 __u16 *ret); 993 extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ext2_ino_t ino, 994 __u16 *ret); 995 extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ext2_ino_t ino, 996 __u16 *ret); 997 extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ext2_ino_t ino, 998 __u16 count); 999 extern ext2_ino_t ext2fs_get_icount_size(ext2_icount_t icount); 1000 errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *); 1001 1002 /* inode.c */ 1003 extern errcode_t ext2fs_flush_icache(ext2_filsys fs); 1004 extern errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan, 1005 ext2_ino_t *ino, 1006 struct ext2_inode *inode, 1007 int bufsize); 1008 extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks, 1009 ext2_inode_scan *ret_scan); 1010 extern void ext2fs_close_inode_scan(ext2_inode_scan scan); 1011 extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino, 1012 struct ext2_inode *inode); 1013 extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan, 1014 int group); 1015 extern void ext2fs_set_inode_callback 1016 (ext2_inode_scan scan, 1017 errcode_t (*done_group)(ext2_filsys fs, 1018 ext2_inode_scan scan, 1019 dgrp_t group, 1020 void * priv_data), 1021 void *done_group_data); 1022 extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags, 1023 int clear_flags); 1024 extern errcode_t ext2fs_read_inode_full(ext2_filsys fs, ext2_ino_t ino, 1025 struct ext2_inode * inode, 1026 int bufsize); 1027 extern errcode_t ext2fs_read_inode (ext2_filsys fs, ext2_ino_t ino, 1028 struct ext2_inode * inode); 1029 extern errcode_t ext2fs_write_inode_full(ext2_filsys fs, ext2_ino_t ino, 1030 struct ext2_inode * inode, 1031 int bufsize); 1032 extern errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino, 1033 struct ext2_inode * inode); 1034 extern errcode_t ext2fs_write_new_inode(ext2_filsys fs, ext2_ino_t ino, 1035 struct ext2_inode * inode); 1036 extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); 1037 extern errcode_t ext2fs_check_directory(ext2_filsys fs, ext2_ino_t ino); 1038 1039 /* inode_io.c */ 1040 extern io_manager inode_io_manager; 1041 extern errcode_t ext2fs_inode_io_intern(ext2_filsys fs, ext2_ino_t ino, 1042 char **name); 1043 extern errcode_t ext2fs_inode_io_intern2(ext2_filsys fs, ext2_ino_t ino, 1044 struct ext2_inode *inode, 1045 char **name); 1046 1047 /* ismounted.c */ 1048 extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags); 1049 extern errcode_t ext2fs_check_mount_point(const char *device, int *mount_flags, 1050 char *mtpt, int mtlen); 1051 1052 /* namei.c */ 1053 extern errcode_t ext2fs_lookup(ext2_filsys fs, ext2_ino_t dir, const char *name, 1054 int namelen, char *buf, ext2_ino_t *inode); 1055 extern errcode_t ext2fs_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1056 const char *name, ext2_ino_t *inode); 1057 errcode_t ext2fs_namei_follow(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1058 const char *name, ext2_ino_t *inode); 1059 extern errcode_t ext2fs_follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1060 ext2_ino_t inode, ext2_ino_t *res_inode); 1061 1062 /* native.c */ 1063 int ext2fs_native_flag(void); 1064 1065 /* newdir.c */ 1066 extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino, 1067 ext2_ino_t parent_ino, char **block); 1068 1069 /* mkdir.c */ 1070 extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum, 1071 const char *name); 1072 1073 /* mkjournal.c */ 1074 extern errcode_t ext2fs_zero_blocks(ext2_filsys fs, blk_t blk, int num, 1075 blk_t *ret_blk, int *ret_count); 1076 extern errcode_t ext2fs_create_journal_superblock(ext2_filsys fs, 1077 __u32 size, int flags, 1078 char **ret_jsb); 1079 extern errcode_t ext2fs_add_journal_device(ext2_filsys fs, 1080 ext2_filsys journal_dev); 1081 extern errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t size, 1082 int flags); 1083 extern int ext2fs_default_journal_size(__u64 blocks); 1084 1085 /* openfs.c */ 1086 extern errcode_t ext2fs_open(const char *name, int flags, int superblock, 1087 unsigned int block_size, io_manager manager, 1088 ext2_filsys *ret_fs); 1089 extern errcode_t ext2fs_open2(const char *name, const char *io_options, 1090 int flags, int superblock, 1091 unsigned int block_size, io_manager manager, 1092 ext2_filsys *ret_fs); 1093 extern blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block, 1094 dgrp_t i); 1095 errcode_t ext2fs_get_data_io(ext2_filsys fs, io_channel *old_io); 1096 errcode_t ext2fs_set_data_io(ext2_filsys fs, io_channel new_io); 1097 errcode_t ext2fs_rewrite_to_io(ext2_filsys fs, io_channel new_io); 1098 1099 /* get_pathname.c */ 1100 extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino, 1101 char **name); 1102 1103 /* link.c */ 1104 errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name, 1105 ext2_ino_t ino, int flags); 1106 errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir, const char *name, 1107 ext2_ino_t ino, int flags); 1108 1109 /* read_bb.c */ 1110 extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs, 1111 ext2_badblocks_list *bb_list); 1112 1113 /* read_bb_file.c */ 1114 extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f, 1115 ext2_badblocks_list *bb_list, 1116 void *priv_data, 1117 void (*invalid)(ext2_filsys fs, 1118 blk_t blk, 1119 char *badstr, 1120 void *priv_data)); 1121 extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f, 1122 ext2_badblocks_list *bb_list, 1123 void (*invalid)(ext2_filsys fs, 1124 blk_t blk)); 1125 1126 /* res_gdt.c */ 1127 extern errcode_t ext2fs_create_resize_inode(ext2_filsys fs); 1128 1129 /* swapfs.c */ 1130 extern void ext2fs_swap_ext_attr(char *to, char *from, int bufsize, 1131 int has_header); 1132 extern void ext2fs_swap_ext_attr_header(struct ext2_ext_attr_header *to_header, 1133 struct ext2_ext_attr_header *from_hdr); 1134 extern void ext2fs_swap_ext_attr_entry(struct ext2_ext_attr_entry *to_entry, 1135 struct ext2_ext_attr_entry *from_entry); 1136 extern void ext2fs_swap_super(struct ext2_super_block * super); 1137 extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp); 1138 extern void ext2fs_swap_inode_full(ext2_filsys fs, struct ext2_inode_large *t, 1139 struct ext2_inode_large *f, int hostorder, 1140 int bufsize); 1141 extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t, 1142 struct ext2_inode *f, int hostorder); 1143 1144 /* valid_blk.c */ 1145 extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode); 1146 1147 /* version.c */ 1148 extern int ext2fs_parse_version_string(const char *ver_string); 1149 extern int ext2fs_get_library_version(const char **ver_string, 1150 const char **date_string); 1151 1152 /* write_bb_file.c */ 1153 extern errcode_t ext2fs_write_bb_FILE(ext2_badblocks_list bb_list, 1154 unsigned int flags, 1155 FILE *f); 1156 1157 1158 /* inline functions */ 1159 extern errcode_t ext2fs_get_mem(unsigned long size, void *ptr); 1160 extern errcode_t ext2fs_get_memalign(unsigned long size, 1161 unsigned long align, void *ptr); 1162 extern errcode_t ext2fs_free_mem(void *ptr); 1163 extern errcode_t ext2fs_resize_mem(unsigned long old_size, 1164 unsigned long size, void *ptr); 1165 extern void ext2fs_mark_super_dirty(ext2_filsys fs); 1166 extern void ext2fs_mark_changed(ext2_filsys fs); 1167 extern int ext2fs_test_changed(ext2_filsys fs); 1168 extern void ext2fs_mark_valid(ext2_filsys fs); 1169 extern void ext2fs_unmark_valid(ext2_filsys fs); 1170 extern int ext2fs_test_valid(ext2_filsys fs); 1171 extern void ext2fs_mark_ib_dirty(ext2_filsys fs); 1172 extern void ext2fs_mark_bb_dirty(ext2_filsys fs); 1173 extern int ext2fs_test_ib_dirty(ext2_filsys fs); 1174 extern int ext2fs_test_bb_dirty(ext2_filsys fs); 1175 extern int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk); 1176 extern int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino); 1177 extern blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group); 1178 extern blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group); 1179 extern blk_t ext2fs_inode_data_blocks(ext2_filsys fs, 1180 struct ext2_inode *inode); 1181 extern unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b); 1182 1183 /* 1184 * The actual inlined functions definitions themselves... 1185 * 1186 * If NO_INLINE_FUNCS is defined, then we won't try to do inline 1187 * functions at all! 1188 */ 1189 #if (defined(INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS)) 1190 #ifdef INCLUDE_INLINE_FUNCS 1191 #define _INLINE_ extern 1192 #else 1193 #ifdef __GNUC__ 1194 #define _INLINE_ extern __inline__ 1195 #else /* For Watcom C */ 1196 #define _INLINE_ extern inline 1197 #endif 1198 #endif 1199 1200 #ifndef EXT2_CUSTOM_MEMORY_ROUTINES 1201 #include <string.h> 1202 /* 1203 * Allocate memory 1204 */ 1205 _INLINE_ errcode_t ext2fs_get_mem(unsigned long size, void *ptr) 1206 { 1207 void *pp; 1208 1209 pp = malloc(size); 1210 if (!pp) 1211 return EXT2_ET_NO_MEMORY; 1212 memcpy(ptr, &pp, sizeof (pp)); 1213 return 0; 1214 } 1215 1216 _INLINE_ errcode_t ext2fs_get_memalign(unsigned long size, 1217 unsigned long align, void *ptr) 1218 { 1219 errcode_t retval; 1220 1221 if (align == 0) 1222 align = 8; 1223 1224 #if defined(__APPLE__) && defined(__MACH__) 1225 /* MacOS 10.5, which we build for, doesn't have posix_memalign. 1226 * The only option is valloc, but only use it if the requested 1227 * alignment is larger than the alignment provided by malloc. 1228 * The idea for this fix came from a patch on the macports website. 1229 */ 1230 *(void **) ptr = (align > 16) ? valloc(size) : malloc(size); 1231 if (*(void **)ptr == NULL) 1232 return EXT2_ET_NO_MEMORY; 1233 #else 1234 if ((retval = posix_memalign((void **) ptr, align, size))) { 1235 if (retval == ENOMEM) 1236 return EXT2_ET_NO_MEMORY; 1237 return retval; 1238 } 1239 #endif 1240 return 0; 1241 } 1242 1243 _INLINE_ errcode_t ext2fs_get_array(unsigned long count, unsigned long size, void *ptr) 1244 { 1245 if (count && (-1UL)/count<size) 1246 return EXT2_ET_NO_MEMORY; //maybe define EXT2_ET_OVERFLOW ? 1247 return ext2fs_get_mem(count*size, ptr); 1248 } 1249 1250 /* 1251 * Free memory 1252 */ 1253 _INLINE_ errcode_t ext2fs_free_mem(void *ptr) 1254 { 1255 void *p; 1256 1257 memcpy(&p, ptr, sizeof(p)); 1258 free(p); 1259 p = 0; 1260 memcpy(ptr, &p, sizeof(p)); 1261 return 0; 1262 } 1263 1264 /* 1265 * Resize memory 1266 */ 1267 _INLINE_ errcode_t ext2fs_resize_mem(unsigned long EXT2FS_ATTR((unused)) old_size, 1268 unsigned long size, void *ptr) 1269 { 1270 void *p; 1271 1272 /* Use "memcpy" for pointer assignments here to avoid problems 1273 * with C99 strict type aliasing rules. */ 1274 memcpy(&p, ptr, sizeof(p)); 1275 p = realloc(p, size); 1276 if (!p) 1277 return EXT2_ET_NO_MEMORY; 1278 memcpy(ptr, &p, sizeof(p)); 1279 return 0; 1280 } 1281 #endif /* Custom memory routines */ 1282 1283 /* 1284 * Mark a filesystem superblock as dirty 1285 */ 1286 _INLINE_ void ext2fs_mark_super_dirty(ext2_filsys fs) 1287 { 1288 fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_CHANGED; 1289 } 1290 1291 /* 1292 * Mark a filesystem as changed 1293 */ 1294 _INLINE_ void ext2fs_mark_changed(ext2_filsys fs) 1295 { 1296 fs->flags |= EXT2_FLAG_CHANGED; 1297 } 1298 1299 /* 1300 * Check to see if a filesystem has changed 1301 */ 1302 _INLINE_ int ext2fs_test_changed(ext2_filsys fs) 1303 { 1304 return (fs->flags & EXT2_FLAG_CHANGED); 1305 } 1306 1307 /* 1308 * Mark a filesystem as valid 1309 */ 1310 _INLINE_ void ext2fs_mark_valid(ext2_filsys fs) 1311 { 1312 fs->flags |= EXT2_FLAG_VALID; 1313 } 1314 1315 /* 1316 * Mark a filesystem as NOT valid 1317 */ 1318 _INLINE_ void ext2fs_unmark_valid(ext2_filsys fs) 1319 { 1320 fs->flags &= ~EXT2_FLAG_VALID; 1321 } 1322 1323 /* 1324 * Check to see if a filesystem is valid 1325 */ 1326 _INLINE_ int ext2fs_test_valid(ext2_filsys fs) 1327 { 1328 return (fs->flags & EXT2_FLAG_VALID); 1329 } 1330 1331 /* 1332 * Mark the inode bitmap as dirty 1333 */ 1334 _INLINE_ void ext2fs_mark_ib_dirty(ext2_filsys fs) 1335 { 1336 fs->flags |= EXT2_FLAG_IB_DIRTY | EXT2_FLAG_CHANGED; 1337 } 1338 1339 /* 1340 * Mark the block bitmap as dirty 1341 */ 1342 _INLINE_ void ext2fs_mark_bb_dirty(ext2_filsys fs) 1343 { 1344 fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_CHANGED; 1345 } 1346 1347 /* 1348 * Check to see if a filesystem's inode bitmap is dirty 1349 */ 1350 _INLINE_ int ext2fs_test_ib_dirty(ext2_filsys fs) 1351 { 1352 return (fs->flags & EXT2_FLAG_IB_DIRTY); 1353 } 1354 1355 /* 1356 * Check to see if a filesystem's block bitmap is dirty 1357 */ 1358 _INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs) 1359 { 1360 return (fs->flags & EXT2_FLAG_BB_DIRTY); 1361 } 1362 1363 /* 1364 * Return the group # of a block 1365 */ 1366 _INLINE_ int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk) 1367 { 1368 return (blk - fs->super->s_first_data_block) / 1369 fs->super->s_blocks_per_group; 1370 } 1371 1372 /* 1373 * Return the group # of an inode number 1374 */ 1375 _INLINE_ int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino) 1376 { 1377 return (ino - 1) / fs->super->s_inodes_per_group; 1378 } 1379 1380 /* 1381 * Return the first block (inclusive) in a group 1382 */ 1383 _INLINE_ blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group) 1384 { 1385 return fs->super->s_first_data_block + 1386 (group * fs->super->s_blocks_per_group); 1387 } 1388 1389 /* 1390 * Return the last block (inclusive) in a group 1391 */ 1392 _INLINE_ blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group) 1393 { 1394 return (group == fs->group_desc_count - 1 ? 1395 fs->super->s_blocks_count - 1 : 1396 ext2fs_group_first_block(fs, group) + 1397 (fs->super->s_blocks_per_group - 1)); 1398 } 1399 1400 _INLINE_ blk_t ext2fs_inode_data_blocks(ext2_filsys fs, 1401 struct ext2_inode *inode) 1402 { 1403 return inode->i_blocks - 1404 (inode->i_file_acl ? fs->blocksize >> 9 : 0); 1405 } 1406 1407 /* 1408 * This is an efficient, overflow safe way of calculating ceil((1.0 * a) / b) 1409 */ 1410 _INLINE_ unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b) 1411 { 1412 if (!a) 1413 return 0; 1414 return ((a - 1) / b) + 1; 1415 } 1416 #undef _INLINE_ 1417 #endif 1418 1419 #ifdef __cplusplus 1420 } 1421 #endif 1422 1423 #endif /* _EXT2FS_EXT2FS_H */ 1424
