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