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 CONFIG_TDB 22 #define EXT2FS_NO_TDB_UNUSED 23 #else 24 #define EXT2FS_NO_TDB_UNUSED EXT2FS_ATTR((unused)) 25 #endif 26 27 #ifdef __cplusplus 28 extern "C" { 29 #endif 30 31 /* 32 * Non-GNU C compilers won't necessarily understand inline 33 */ 34 #if (!defined(__GNUC__) && !defined(__WATCOMC__)) 35 #define NO_INLINE_FUNCS 36 #endif 37 38 /* 39 * Where the master copy of the superblock is located, and how big 40 * superblocks are supposed to be. We define SUPERBLOCK_SIZE because 41 * the size of the superblock structure is not necessarily trustworthy 42 * (some versions have the padding set up so that the superblock is 43 * 1032 bytes long). 44 */ 45 #define SUPERBLOCK_OFFSET 1024 46 #define SUPERBLOCK_SIZE 1024 47 48 #define UUID_STR_SIZE 37 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 <time.h> 64 #include <errno.h> 65 66 #if EXT2_FLAT_INCLUDES 67 #include "e2_types.h" 68 #include "ext2_fs.h" 69 #include "ext3_extents.h" 70 #else 71 #include <ext2fs/ext2_types.h> 72 #include <ext2fs/ext2_fs.h> 73 #include <ext2fs/ext3_extents.h> 74 #endif /* EXT2_FLAT_INCLUDES */ 75 76 typedef __u32 __bitwise ext2_ino_t; 77 typedef __u32 __bitwise blk_t; 78 typedef __u64 __bitwise blk64_t; 79 typedef __u32 __bitwise dgrp_t; 80 typedef __u32 __bitwise ext2_off_t; 81 typedef __u64 __bitwise ext2_off64_t; 82 typedef __s64 __bitwise e2_blkcnt_t; 83 typedef __u32 __bitwise ext2_dirhash_t; 84 85 #if EXT2_FLAT_INCLUDES 86 #include "com_err.h" 87 #include "ext2_io.h" 88 #include "ext2_err.h" 89 #include "ext2_ext_attr.h" 90 #else 91 #include <et/com_err.h> 92 #include <ext2fs/ext2_io.h> 93 #include <ext2fs/ext2_err.h> 94 #include <ext2fs/ext2_ext_attr.h> 95 #endif 96 97 #include "hashmap.h" 98 99 /* 100 * Portability help for Microsoft Visual C++ 101 */ 102 #ifdef _MSC_VER 103 #define EXT2_QSORT_TYPE int __cdecl 104 #else 105 #define EXT2_QSORT_TYPE int 106 #endif 107 108 typedef struct struct_ext2_filsys *ext2_filsys; 109 110 #define EXT2FS_MARK_ERROR 0 111 #define EXT2FS_UNMARK_ERROR 1 112 #define EXT2FS_TEST_ERROR 2 113 114 typedef struct ext2fs_struct_generic_bitmap *ext2fs_generic_bitmap; 115 typedef struct ext2fs_struct_generic_bitmap *ext2fs_inode_bitmap; 116 typedef struct ext2fs_struct_generic_bitmap *ext2fs_block_bitmap; 117 118 #define EXT2_FIRST_INODE(s) EXT2_FIRST_INO(s) 119 120 121 /* 122 * Badblocks list definitions 123 */ 124 125 typedef struct ext2_struct_u32_list *ext2_badblocks_list; 126 typedef struct ext2_struct_u32_iterate *ext2_badblocks_iterate; 127 128 typedef struct ext2_struct_u32_list *ext2_u32_list; 129 typedef struct ext2_struct_u32_iterate *ext2_u32_iterate; 130 131 /* old */ 132 typedef struct ext2_struct_u32_list *badblocks_list; 133 typedef struct ext2_struct_u32_iterate *badblocks_iterate; 134 135 #define BADBLOCKS_FLAG_DIRTY 1 136 137 /* 138 * ext2_dblist structure and abstractions (see dblist.c) 139 */ 140 struct ext2_db_entry2 { 141 ext2_ino_t ino; 142 blk64_t blk; 143 e2_blkcnt_t blockcnt; 144 }; 145 146 /* Ye Olde 32-bit version */ 147 struct ext2_db_entry { 148 ext2_ino_t ino; 149 blk_t blk; 150 int blockcnt; 151 }; 152 153 typedef struct ext2_struct_dblist *ext2_dblist; 154 155 #define DBLIST_ABORT 1 156 157 /* 158 * ext2_fileio definitions 159 */ 160 161 #define EXT2_FILE_WRITE 0x0001 162 #define EXT2_FILE_CREATE 0x0002 163 164 #define EXT2_FILE_MASK 0x00FF 165 166 #define EXT2_FILE_BUF_DIRTY 0x4000 167 #define EXT2_FILE_BUF_VALID 0x2000 168 169 typedef struct ext2_file *ext2_file_t; 170 171 #define EXT2_SEEK_SET 0 172 #define EXT2_SEEK_CUR 1 173 #define EXT2_SEEK_END 2 174 175 /* 176 * Flags for the ext2_filsys structure and for ext2fs_open() 177 */ 178 #define EXT2_FLAG_RW 0x01 179 #define EXT2_FLAG_CHANGED 0x02 180 #define EXT2_FLAG_DIRTY 0x04 181 #define EXT2_FLAG_VALID 0x08 182 #define EXT2_FLAG_IB_DIRTY 0x10 183 #define EXT2_FLAG_BB_DIRTY 0x20 184 #define EXT2_FLAG_SWAP_BYTES 0x40 185 #define EXT2_FLAG_SWAP_BYTES_READ 0x80 186 #define EXT2_FLAG_SWAP_BYTES_WRITE 0x100 187 #define EXT2_FLAG_MASTER_SB_ONLY 0x200 188 #define EXT2_FLAG_FORCE 0x400 189 #define EXT2_FLAG_SUPER_ONLY 0x800 190 #define EXT2_FLAG_JOURNAL_DEV_OK 0x1000 191 #define EXT2_FLAG_IMAGE_FILE 0x2000 192 #define EXT2_FLAG_EXCLUSIVE 0x4000 193 #define EXT2_FLAG_SOFTSUPP_FEATURES 0x8000 194 #define EXT2_FLAG_NOFREE_ON_ERROR 0x10000 195 #define EXT2_FLAG_64BITS 0x20000 196 #define EXT2_FLAG_PRINT_PROGRESS 0x40000 197 #define EXT2_FLAG_DIRECT_IO 0x80000 198 #define EXT2_FLAG_SKIP_MMP 0x100000 199 #define EXT2_FLAG_IGNORE_CSUM_ERRORS 0x200000 200 #define EXT2_FLAG_SHARE_DUP 0x400000 201 202 /* 203 * Special flag in the ext2 inode i_flag field that means that this is 204 * a new inode. (So that ext2_write_inode() can clear extra fields.) 205 */ 206 #define EXT2_NEW_INODE_FL 0x80000000 207 208 /* 209 * Flags for mkjournal 210 */ 211 #define EXT2_MKJOURNAL_V1_SUPER 0x0000001 /* create V1 superblock (deprecated) */ 212 #define EXT2_MKJOURNAL_LAZYINIT 0x0000002 /* don't zero journal inode before use*/ 213 #define EXT2_MKJOURNAL_NO_MNT_CHECK 0x0000004 /* don't check mount status */ 214 215 struct blk_alloc_ctx; 216 struct opaque_ext2_group_desc; 217 218 struct struct_ext2_filsys { 219 errcode_t magic; 220 io_channel io; 221 int flags; 222 char * device_name; 223 struct ext2_super_block * super; 224 unsigned int blocksize; 225 int fragsize; 226 dgrp_t group_desc_count; 227 unsigned long desc_blocks; 228 struct opaque_ext2_group_desc * group_desc; 229 unsigned int inode_blocks_per_group; 230 ext2fs_inode_bitmap inode_map; 231 ext2fs_block_bitmap block_map; 232 /* XXX FIXME-64: not 64-bit safe, but not used? */ 233 errcode_t (*get_blocks)(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); 234 errcode_t (*check_directory)(ext2_filsys fs, ext2_ino_t ino); 235 errcode_t (*write_bitmaps)(ext2_filsys fs); 236 errcode_t (*read_inode)(ext2_filsys fs, ext2_ino_t ino, 237 struct ext2_inode *inode); 238 errcode_t (*write_inode)(ext2_filsys fs, ext2_ino_t ino, 239 struct ext2_inode *inode); 240 ext2_badblocks_list badblocks; 241 ext2_dblist dblist; 242 __u32 stride; /* for mke2fs */ 243 struct ext2_super_block * orig_super; 244 struct ext2_image_hdr * image_header; 245 __u32 umask; 246 time_t now; 247 int cluster_ratio_bits; 248 __u16 default_bitmap_type; 249 __u16 pad; 250 /* 251 * Reserved for future expansion 252 */ 253 __u32 reserved[5]; 254 255 /* 256 * Reserved for the use of the calling application. 257 */ 258 void * priv_data; 259 260 /* 261 * Inode cache 262 */ 263 struct ext2_inode_cache *icache; 264 io_channel image_io; 265 266 /* 267 * More callback functions 268 */ 269 errcode_t (*get_alloc_block)(ext2_filsys fs, blk64_t goal, 270 blk64_t *ret); 271 errcode_t (*get_alloc_block2)(ext2_filsys fs, blk64_t goal, 272 blk64_t *ret, struct blk_alloc_ctx *ctx); 273 void (*block_alloc_stats)(ext2_filsys fs, blk64_t blk, int inuse); 274 275 /* 276 * Buffers for Multiple mount protection(MMP) block. 277 */ 278 void *mmp_buf; 279 void *mmp_cmp; 280 int mmp_fd; 281 282 /* 283 * Time at which e2fsck last updated the MMP block. 284 */ 285 long mmp_last_written; 286 287 /* progress operation functions */ 288 struct ext2fs_progress_ops *progress_ops; 289 290 /* Precomputed FS UUID checksum for seeding other checksums */ 291 __u32 csum_seed; 292 293 io_channel journal_io; 294 char *journal_name; 295 296 /* New block range allocation hooks */ 297 errcode_t (*new_range)(ext2_filsys fs, int flags, blk64_t goal, 298 blk64_t len, blk64_t *pblk, blk64_t *plen); 299 void (*block_alloc_stats_range)(ext2_filsys fs, blk64_t blk, blk_t num, 300 int inuse); 301 302 /* hashmap for SHA of data blocks */ 303 struct ext2fs_hashmap* block_sha_map; 304 }; 305 306 #if EXT2_FLAT_INCLUDES 307 #include "e2_bitops.h" 308 #else 309 #include <ext2fs/bitops.h> 310 #endif 311 312 /* 313 * 64-bit bitmap backend types 314 */ 315 #define EXT2FS_BMAP64_BITARRAY 1 316 #define EXT2FS_BMAP64_RBTREE 2 317 #define EXT2FS_BMAP64_AUTODIR 3 318 319 /* 320 * Return flags for the block iterator functions 321 */ 322 #define BLOCK_CHANGED 1 323 #define BLOCK_ABORT 2 324 #define BLOCK_ERROR 4 325 #define BLOCK_INLINE_DATA_CHANGED 8 326 327 /* 328 * Block interate flags 329 * 330 * BLOCK_FLAG_APPEND, or BLOCK_FLAG_HOLE, indicates that the interator 331 * function should be called on blocks where the block number is zero. 332 * This is used by ext2fs_expand_dir() to be able to add a new block 333 * to an inode. It can also be used for programs that want to be able 334 * to deal with files that contain "holes". 335 * 336 * BLOCK_FLAG_DEPTH_TRAVERSE indicates that the iterator function for 337 * the indirect, doubly indirect, etc. blocks should be called after 338 * all of the blocks containined in the indirect blocks are processed. 339 * This is useful if you are going to be deallocating blocks from an 340 * inode. 341 * 342 * BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be 343 * called for data blocks only. 344 * 345 * BLOCK_FLAG_READ_ONLY is a promise by the caller that it will not 346 * modify returned block number. 347 * 348 * BLOCK_FLAG_NO_LARGE is for internal use only. It informs 349 * ext2fs_block_iterate2 that large files won't be accepted. 350 */ 351 #define BLOCK_FLAG_APPEND 1 352 #define BLOCK_FLAG_HOLE 1 353 #define BLOCK_FLAG_DEPTH_TRAVERSE 2 354 #define BLOCK_FLAG_DATA_ONLY 4 355 #define BLOCK_FLAG_READ_ONLY 8 356 357 #define BLOCK_FLAG_NO_LARGE 0x1000 358 359 /* 360 * Magic "block count" return values for the block iterator function. 361 */ 362 #define BLOCK_COUNT_IND (-1) 363 #define BLOCK_COUNT_DIND (-2) 364 #define BLOCK_COUNT_TIND (-3) 365 #define BLOCK_COUNT_TRANSLATOR (-4) 366 367 #define BLOCK_ALLOC_UNKNOWN 0 368 #define BLOCK_ALLOC_DATA 1 369 #define BLOCK_ALLOC_METADATA 2 370 371 struct blk_alloc_ctx { 372 ext2_ino_t ino; 373 struct ext2_inode *inode; 374 blk64_t lblk; 375 int flags; 376 }; 377 378 #if 0 379 /* 380 * Flags for ext2fs_move_blocks 381 */ 382 #define EXT2_BMOVE_GET_DBLIST 0x0001 383 #define EXT2_BMOVE_DEBUG 0x0002 384 #endif 385 386 /* 387 * Generic (non-filesystem layout specific) extents structure 388 */ 389 390 #define EXT2_EXTENT_FLAGS_LEAF 0x0001 391 #define EXT2_EXTENT_FLAGS_UNINIT 0x0002 392 #define EXT2_EXTENT_FLAGS_SECOND_VISIT 0x0004 393 394 struct ext2fs_extent { 395 blk64_t e_pblk; /* first physical block */ 396 blk64_t e_lblk; /* first logical block extent covers */ 397 __u32 e_len; /* number of blocks covered by extent */ 398 __u32 e_flags; /* extent flags */ 399 }; 400 401 typedef struct ext2_extent_handle *ext2_extent_handle_t; 402 typedef struct ext2_extent_path *ext2_extent_path_t; 403 404 /* 405 * Flags used by ext2fs_extent_get() 406 */ 407 #define EXT2_EXTENT_CURRENT 0x0000 408 #define EXT2_EXTENT_MOVE_MASK 0x000F 409 #define EXT2_EXTENT_ROOT 0x0001 410 #define EXT2_EXTENT_LAST_LEAF 0x0002 411 #define EXT2_EXTENT_FIRST_SIB 0x0003 412 #define EXT2_EXTENT_LAST_SIB 0x0004 413 #define EXT2_EXTENT_NEXT_SIB 0x0005 414 #define EXT2_EXTENT_PREV_SIB 0x0006 415 #define EXT2_EXTENT_NEXT_LEAF 0x0007 416 #define EXT2_EXTENT_PREV_LEAF 0x0008 417 #define EXT2_EXTENT_NEXT 0x0009 418 #define EXT2_EXTENT_PREV 0x000A 419 #define EXT2_EXTENT_UP 0x000B 420 #define EXT2_EXTENT_DOWN 0x000C 421 #define EXT2_EXTENT_DOWN_AND_LAST 0x000D 422 423 /* 424 * Flags used by ext2fs_extent_insert() 425 */ 426 #define EXT2_EXTENT_INSERT_AFTER 0x0001 /* insert after handle loc'n */ 427 #define EXT2_EXTENT_INSERT_NOSPLIT 0x0002 /* insert may not cause split */ 428 429 /* 430 * Flags used by ext2fs_extent_delete() 431 */ 432 #define EXT2_EXTENT_DELETE_KEEP_EMPTY 0x001 /* keep node if last extnt gone */ 433 434 /* 435 * Flags used by ext2fs_extent_set_bmap() 436 */ 437 #define EXT2_EXTENT_SET_BMAP_UNINIT 0x0001 438 439 /* 440 * Data structure returned by ext2fs_extent_get_info() 441 */ 442 struct ext2_extent_info { 443 int curr_entry; 444 int curr_level; 445 int num_entries; 446 int max_entries; 447 int max_depth; 448 int bytes_avail; 449 blk64_t max_lblk; 450 blk64_t max_pblk; 451 __u32 max_len; 452 __u32 max_uninit_len; 453 }; 454 455 /* 456 * Flags for directory block reading and writing functions 457 */ 458 #define EXT2_DIRBLOCK_V2_STRUCT 0x0001 459 460 /* 461 * Return flags for the directory iterator functions 462 */ 463 #define DIRENT_CHANGED 1 464 #define DIRENT_ABORT 2 465 #define DIRENT_ERROR 3 466 467 /* 468 * Directory iterator flags 469 */ 470 471 #define DIRENT_FLAG_INCLUDE_EMPTY 1 472 #define DIRENT_FLAG_INCLUDE_REMOVED 2 473 #define DIRENT_FLAG_INCLUDE_CSUM 4 474 #define DIRENT_FLAG_INCLUDE_INLINE_DATA 8 475 476 #define DIRENT_DOT_FILE 1 477 #define DIRENT_DOT_DOT_FILE 2 478 #define DIRENT_OTHER_FILE 3 479 #define DIRENT_DELETED_FILE 4 480 #define DIRENT_CHECKSUM 5 481 482 /* 483 * Inode scan definitions 484 */ 485 typedef struct ext2_struct_inode_scan *ext2_inode_scan; 486 487 /* 488 * ext2fs_scan flags 489 */ 490 #define EXT2_SF_CHK_BADBLOCKS 0x0001 491 #define EXT2_SF_BAD_INODE_BLK 0x0002 492 #define EXT2_SF_BAD_EXTRA_BYTES 0x0004 493 #define EXT2_SF_SKIP_MISSING_ITABLE 0x0008 494 #define EXT2_SF_DO_LAZY 0x0010 495 #define EXT2_SF_WARN_GARBAGE_INODES 0x0020 496 497 /* 498 * ext2fs_check_if_mounted flags 499 */ 500 #define EXT2_MF_MOUNTED 1 501 #define EXT2_MF_ISROOT 2 502 #define EXT2_MF_READONLY 4 503 #define EXT2_MF_SWAP 8 504 #define EXT2_MF_BUSY 16 505 506 /* 507 * Ext2/linux mode flags. We define them here so that we don't need 508 * to depend on the OS's sys/stat.h, since we may be compiling on a 509 * non-Linux system. 510 */ 511 #define LINUX_S_IFMT 00170000 512 #define LINUX_S_IFSOCK 0140000 513 #define LINUX_S_IFLNK 0120000 514 #define LINUX_S_IFREG 0100000 515 #define LINUX_S_IFBLK 0060000 516 #define LINUX_S_IFDIR 0040000 517 #define LINUX_S_IFCHR 0020000 518 #define LINUX_S_IFIFO 0010000 519 #define LINUX_S_ISUID 0004000 520 #define LINUX_S_ISGID 0002000 521 #define LINUX_S_ISVTX 0001000 522 523 #define LINUX_S_IRWXU 00700 524 #define LINUX_S_IRUSR 00400 525 #define LINUX_S_IWUSR 00200 526 #define LINUX_S_IXUSR 00100 527 528 #define LINUX_S_IRWXG 00070 529 #define LINUX_S_IRGRP 00040 530 #define LINUX_S_IWGRP 00020 531 #define LINUX_S_IXGRP 00010 532 533 #define LINUX_S_IRWXO 00007 534 #define LINUX_S_IROTH 00004 535 #define LINUX_S_IWOTH 00002 536 #define LINUX_S_IXOTH 00001 537 538 #define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK) 539 #define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG) 540 #define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR) 541 #define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR) 542 #define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK) 543 #define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO) 544 #define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK) 545 546 /* 547 * ext2 size of an inode 548 */ 549 #define EXT2_I_SIZE(i) ((i)->i_size | ((__u64) (i)->i_size_high << 32)) 550 551 /* 552 * ext2_icount_t abstraction 553 */ 554 #define EXT2_ICOUNT_OPT_INCREMENT 0x01 555 556 typedef struct ext2_icount *ext2_icount_t; 557 558 /* 559 * Flags for ext2fs_bmap 560 */ 561 #define BMAP_ALLOC 0x0001 562 #define BMAP_SET 0x0002 563 #define BMAP_UNINIT 0x0004 564 #define BMAP_ZERO 0x0008 565 566 /* 567 * Returned flags from ext2fs_bmap 568 */ 569 #define BMAP_RET_UNINIT 0x0001 570 571 /* 572 * Flags for imager.c functions 573 */ 574 #define IMAGER_FLAG_INODEMAP 1 575 #define IMAGER_FLAG_SPARSEWRITE 2 576 577 /* 578 * For checking structure magic numbers... 579 */ 580 581 #define EXT2_CHECK_MAGIC(struct, code) \ 582 if ((struct)->magic != (code)) return (code) 583 584 /* 585 * Features supported by this version of the library 586 */ 587 #define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\ 588 EXT2_FEATURE_COMPAT_IMAGIC_INODES|\ 589 EXT3_FEATURE_COMPAT_HAS_JOURNAL|\ 590 EXT2_FEATURE_COMPAT_RESIZE_INODE|\ 591 EXT2_FEATURE_COMPAT_DIR_INDEX|\ 592 EXT2_FEATURE_COMPAT_EXT_ATTR|\ 593 EXT4_FEATURE_COMPAT_SPARSE_SUPER2) 594 595 #ifdef CONFIG_MMP 596 #define EXT4_LIB_INCOMPAT_MMP EXT4_FEATURE_INCOMPAT_MMP 597 #else 598 #define EXT4_LIB_INCOMPAT_MMP (0) 599 #endif 600 601 #define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 602 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 603 EXT2_FEATURE_INCOMPAT_META_BG|\ 604 EXT3_FEATURE_INCOMPAT_RECOVER|\ 605 EXT3_FEATURE_INCOMPAT_EXTENTS|\ 606 EXT4_FEATURE_INCOMPAT_FLEX_BG|\ 607 EXT4_LIB_INCOMPAT_MMP|\ 608 EXT4_FEATURE_INCOMPAT_64BIT|\ 609 EXT4_FEATURE_INCOMPAT_INLINE_DATA|\ 610 EXT4_FEATURE_INCOMPAT_ENCRYPT|\ 611 EXT4_FEATURE_INCOMPAT_CSUM_SEED) 612 613 #define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\ 614 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|\ 615 EXT2_FEATURE_RO_COMPAT_LARGE_FILE|\ 616 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|\ 617 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|\ 618 EXT4_FEATURE_RO_COMPAT_GDT_CSUM|\ 619 EXT4_FEATURE_RO_COMPAT_BIGALLOC|\ 620 EXT4_FEATURE_RO_COMPAT_QUOTA|\ 621 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM|\ 622 EXT4_FEATURE_RO_COMPAT_READONLY |\ 623 EXT4_FEATURE_RO_COMPAT_PROJECT |\ 624 EXT4_FEATURE_RO_COMPAT_SHARED_BLOCKS) 625 626 /* 627 * These features are only allowed if EXT2_FLAG_SOFTSUPP_FEATURES is passed 628 * to ext2fs_openfs() 629 */ 630 #define EXT2_LIB_SOFTSUPP_INCOMPAT (0) 631 #define EXT2_LIB_SOFTSUPP_RO_COMPAT (EXT4_FEATURE_RO_COMPAT_REPLICA) 632 633 634 /* Translate a block number to a cluster number */ 635 #define EXT2FS_CLUSTER_RATIO(fs) (1 << (fs)->cluster_ratio_bits) 636 #define EXT2FS_CLUSTER_MASK(fs) (EXT2FS_CLUSTER_RATIO(fs) - 1) 637 #define EXT2FS_B2C(fs, blk) ((blk) >> (fs)->cluster_ratio_bits) 638 /* Translate a cluster number to a block number */ 639 #define EXT2FS_C2B(fs, cluster) ((cluster) << (fs)->cluster_ratio_bits) 640 /* Translate # of blks to # of clusters */ 641 #define EXT2FS_NUM_B2C(fs, blks) (((blks) + EXT2FS_CLUSTER_MASK(fs)) >> \ 642 (fs)->cluster_ratio_bits) 643 644 #if defined(HAVE_FSTAT64) && !defined(__OSX_AVAILABLE_BUT_DEPRECATED) 645 typedef struct stat64 ext2fs_struct_stat; 646 #else 647 typedef struct stat ext2fs_struct_stat; 648 #endif 649 650 /* 651 * For ext2fs_close2() and ext2fs_flush2(), this flag allows you to 652 * avoid the fsync call. 653 */ 654 #define EXT2_FLAG_FLUSH_NO_SYNC 1 655 656 /* 657 * Modify and iterate extended attributes 658 */ 659 struct ext2_xattr_handle; 660 #define XATTR_ABORT 1 661 #define XATTR_CHANGED 2 662 663 /* 664 * function prototypes 665 */ 666 static inline int ext2fs_has_group_desc_csum(ext2_filsys fs) 667 { 668 return ext2fs_has_feature_metadata_csum(fs->super) || 669 ext2fs_has_feature_gdt_csum(fs->super); 670 } 671 672 /* The LARGE_FILE feature should be set if we have stored files 2GB+ in size */ 673 static inline int ext2fs_needs_large_file_feature(unsigned long long file_size) 674 { 675 return file_size >= 0x80000000ULL; 676 } 677 678 /* alloc.c */ 679 extern void ext2fs_clear_block_uninit(ext2_filsys fs, dgrp_t group); 680 extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode, 681 ext2fs_inode_bitmap map, ext2_ino_t *ret); 682 extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal, 683 ext2fs_block_bitmap map, blk_t *ret); 684 extern errcode_t ext2fs_new_block2(ext2_filsys fs, blk64_t goal, 685 ext2fs_block_bitmap map, blk64_t *ret); 686 extern errcode_t ext2fs_new_block3(ext2_filsys fs, blk64_t goal, 687 ext2fs_block_bitmap map, blk64_t *ret, 688 struct blk_alloc_ctx *ctx); 689 extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start, 690 blk_t finish, int num, 691 ext2fs_block_bitmap map, 692 blk_t *ret); 693 extern errcode_t ext2fs_get_free_blocks2(ext2_filsys fs, blk64_t start, 694 blk64_t finish, int num, 695 ext2fs_block_bitmap map, 696 blk64_t *ret); 697 extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal, 698 char *block_buf, blk_t *ret); 699 extern errcode_t ext2fs_alloc_block2(ext2_filsys fs, blk64_t goal, 700 char *block_buf, blk64_t *ret); 701 extern errcode_t ext2fs_alloc_block3(ext2_filsys fs, blk64_t goal, 702 char *block_buf, blk64_t *ret, 703 struct blk_alloc_ctx *ctx); 704 705 extern void ext2fs_set_alloc_block_callback(ext2_filsys fs, 706 errcode_t (*func)(ext2_filsys fs, 707 blk64_t goal, 708 blk64_t *ret), 709 errcode_t (**old)(ext2_filsys fs, 710 blk64_t goal, 711 blk64_t *ret)); 712 blk64_t ext2fs_find_inode_goal(ext2_filsys fs, ext2_ino_t ino, 713 struct ext2_inode *inode, blk64_t lblk); 714 extern void ext2fs_set_new_range_callback(ext2_filsys fs, 715 errcode_t (*func)(ext2_filsys fs, int flags, blk64_t goal, 716 blk64_t len, blk64_t *pblk, blk64_t *plen), 717 errcode_t (**old)(ext2_filsys fs, int flags, blk64_t goal, 718 blk64_t len, blk64_t *pblk, blk64_t *plen)); 719 extern void ext2fs_set_block_alloc_stats_range_callback(ext2_filsys fs, 720 void (*func)(ext2_filsys fs, blk64_t blk, 721 blk_t num, int inuse), 722 void (**old)(ext2_filsys fs, blk64_t blk, 723 blk_t num, int inuse)); 724 #define EXT2_NEWRANGE_FIXED_GOAL (0x1) 725 #define EXT2_NEWRANGE_MIN_LENGTH (0x2) 726 #define EXT2_NEWRANGE_ALL_FLAGS (0x3) 727 errcode_t ext2fs_new_range(ext2_filsys fs, int flags, blk64_t goal, 728 blk64_t len, ext2fs_block_bitmap map, blk64_t *pblk, 729 blk64_t *plen); 730 #define EXT2_ALLOCRANGE_FIXED_GOAL (0x1) 731 #define EXT2_ALLOCRANGE_ZERO_BLOCKS (0x2) 732 #define EXT2_ALLOCRANGE_ALL_FLAGS (0x3) 733 errcode_t ext2fs_alloc_range(ext2_filsys fs, int flags, blk64_t goal, 734 blk_t len, blk64_t *ret); 735 736 /* alloc_sb.c */ 737 extern int ext2fs_reserve_super_and_bgd(ext2_filsys fs, 738 dgrp_t group, 739 ext2fs_block_bitmap bmap); 740 extern void ext2fs_set_block_alloc_stats_callback(ext2_filsys fs, 741 void (*func)(ext2_filsys fs, 742 blk64_t blk, 743 int inuse), 744 void (**old)(ext2_filsys fs, 745 blk64_t blk, 746 int inuse)); 747 748 /* alloc_stats.c */ 749 void ext2fs_inode_alloc_stats(ext2_filsys fs, ext2_ino_t ino, int inuse); 750 void ext2fs_inode_alloc_stats2(ext2_filsys fs, ext2_ino_t ino, 751 int inuse, int isdir); 752 void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse); 753 void ext2fs_block_alloc_stats2(ext2_filsys fs, blk64_t blk, int inuse); 754 void ext2fs_block_alloc_stats_range(ext2_filsys fs, blk64_t blk, 755 blk_t num, int inuse); 756 757 /* alloc_tables.c */ 758 extern errcode_t ext2fs_allocate_tables(ext2_filsys fs); 759 extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group, 760 ext2fs_block_bitmap bmap); 761 762 /* badblocks.c */ 763 extern errcode_t ext2fs_u32_list_create(ext2_u32_list *ret, int size); 764 extern errcode_t ext2fs_u32_list_add(ext2_u32_list bb, __u32 blk); 765 extern int ext2fs_u32_list_find(ext2_u32_list bb, __u32 blk); 766 extern int ext2fs_u32_list_test(ext2_u32_list bb, blk_t blk); 767 extern errcode_t ext2fs_u32_list_iterate_begin(ext2_u32_list bb, 768 ext2_u32_iterate *ret); 769 extern int ext2fs_u32_list_iterate(ext2_u32_iterate iter, blk_t *blk); 770 extern void ext2fs_u32_list_iterate_end(ext2_u32_iterate iter); 771 extern errcode_t ext2fs_u32_copy(ext2_u32_list src, ext2_u32_list *dest); 772 extern int ext2fs_u32_list_equal(ext2_u32_list bb1, ext2_u32_list bb2); 773 774 extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret, 775 int size); 776 extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb, 777 blk_t blk); 778 extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb, 779 blk_t blk); 780 extern int ext2fs_u32_list_del(ext2_u32_list bb, __u32 blk); 781 extern void ext2fs_badblocks_list_del(ext2_u32_list bb, __u32 blk); 782 extern errcode_t 783 ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb, 784 ext2_badblocks_iterate *ret); 785 extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter, 786 blk_t *blk); 787 extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter); 788 extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src, 789 ext2_badblocks_list *dest); 790 extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1, 791 ext2_badblocks_list bb2); 792 extern int ext2fs_u32_list_count(ext2_u32_list bb); 793 794 /* bb_compat */ 795 extern errcode_t badblocks_list_create(badblocks_list *ret, int size); 796 extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk); 797 extern int badblocks_list_test(badblocks_list bb, blk_t blk); 798 extern errcode_t badblocks_list_iterate_begin(badblocks_list bb, 799 badblocks_iterate *ret); 800 extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk); 801 extern void badblocks_list_iterate_end(badblocks_iterate iter); 802 extern void badblocks_list_free(badblocks_list bb); 803 804 /* bb_inode.c */ 805 extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs, 806 ext2_badblocks_list bb_list); 807 808 /* bitmaps.c */ 809 extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap); 810 extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap); 811 extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src, 812 ext2fs_generic_bitmap *dest); 813 extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs); 814 extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs); 815 extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs); 816 extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs); 817 extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs, 818 const char *descr, 819 ext2fs_block_bitmap *ret); 820 extern errcode_t ext2fs_allocate_subcluster_bitmap(ext2_filsys fs, 821 const char *descr, 822 ext2fs_block_bitmap *ret); 823 extern int ext2fs_get_bitmap_granularity(ext2fs_block_bitmap bitmap); 824 extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs, 825 const char *descr, 826 ext2fs_inode_bitmap *ret); 827 extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap, 828 ext2_ino_t end, ext2_ino_t *oend); 829 extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap, 830 blk_t end, blk_t *oend); 831 extern errcode_t ext2fs_fudge_block_bitmap_end2(ext2fs_block_bitmap bitmap, 832 blk64_t end, blk64_t *oend); 833 extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap); 834 extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap); 835 extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs); 836 extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs); 837 extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end, 838 ext2fs_inode_bitmap bmap); 839 extern errcode_t ext2fs_resize_inode_bitmap2(__u64 new_end, 840 __u64 new_real_end, 841 ext2fs_inode_bitmap bmap); 842 extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end, 843 ext2fs_block_bitmap bmap); 844 extern errcode_t ext2fs_resize_block_bitmap2(__u64 new_end, 845 __u64 new_real_end, 846 ext2fs_block_bitmap bmap); 847 extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1, 848 ext2fs_block_bitmap bm2); 849 extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1, 850 ext2fs_inode_bitmap bm2); 851 extern errcode_t ext2fs_set_inode_bitmap_range(ext2fs_inode_bitmap bmap, 852 ext2_ino_t start, unsigned int num, 853 void *in); 854 extern errcode_t ext2fs_set_inode_bitmap_range2(ext2fs_inode_bitmap bmap, 855 __u64 start, size_t num, 856 void *in); 857 extern errcode_t ext2fs_get_inode_bitmap_range(ext2fs_inode_bitmap bmap, 858 ext2_ino_t start, unsigned int num, 859 void *out); 860 extern errcode_t ext2fs_get_inode_bitmap_range2(ext2fs_inode_bitmap bmap, 861 __u64 start, size_t num, 862 void *out); 863 extern errcode_t ext2fs_set_block_bitmap_range(ext2fs_block_bitmap bmap, 864 blk_t start, unsigned int num, 865 void *in); 866 extern errcode_t ext2fs_set_block_bitmap_range2(ext2fs_block_bitmap bmap, 867 blk64_t start, size_t num, 868 void *in); 869 extern errcode_t ext2fs_get_block_bitmap_range(ext2fs_block_bitmap bmap, 870 blk_t start, unsigned int num, 871 void *out); 872 extern errcode_t ext2fs_get_block_bitmap_range2(ext2fs_block_bitmap bmap, 873 blk64_t start, size_t num, 874 void *out); 875 876 /* blknum.c */ 877 extern __u32 ext2fs_inode_bitmap_checksum(ext2_filsys fs, dgrp_t group); 878 extern __u32 ext2fs_block_bitmap_checksum(ext2_filsys fs, dgrp_t group); 879 extern dgrp_t ext2fs_group_of_blk2(ext2_filsys fs, blk64_t); 880 extern blk64_t ext2fs_group_first_block2(ext2_filsys fs, dgrp_t group); 881 extern blk64_t ext2fs_group_last_block2(ext2_filsys fs, dgrp_t group); 882 extern int ext2fs_group_blocks_count(ext2_filsys fs, dgrp_t group); 883 extern blk64_t ext2fs_inode_data_blocks2(ext2_filsys fs, 884 struct ext2_inode *inode); 885 extern blk64_t ext2fs_inode_i_blocks(ext2_filsys fs, 886 struct ext2_inode *inode); 887 extern blk64_t ext2fs_blocks_count(struct ext2_super_block *super); 888 extern void ext2fs_blocks_count_set(struct ext2_super_block *super, 889 blk64_t blk); 890 extern void ext2fs_blocks_count_add(struct ext2_super_block *super, 891 blk64_t blk); 892 extern blk64_t ext2fs_r_blocks_count(struct ext2_super_block *super); 893 extern void ext2fs_r_blocks_count_set(struct ext2_super_block *super, 894 blk64_t blk); 895 extern void ext2fs_r_blocks_count_add(struct ext2_super_block *super, 896 blk64_t blk); 897 extern blk64_t ext2fs_free_blocks_count(struct ext2_super_block *super); 898 extern void ext2fs_free_blocks_count_set(struct ext2_super_block *super, 899 blk64_t blk); 900 extern void ext2fs_free_blocks_count_add(struct ext2_super_block *super, 901 blk64_t blk); 902 /* Block group descriptor accessor functions */ 903 extern struct ext2_group_desc *ext2fs_group_desc(ext2_filsys fs, 904 struct opaque_ext2_group_desc *gdp, 905 dgrp_t group); 906 extern blk64_t ext2fs_block_bitmap_csum(ext2_filsys fs, dgrp_t group); 907 extern blk64_t ext2fs_block_bitmap_loc(ext2_filsys fs, dgrp_t group); 908 extern void ext2fs_block_bitmap_loc_set(ext2_filsys fs, dgrp_t group, 909 blk64_t blk); 910 extern __u32 ext2fs_inode_bitmap_csum(ext2_filsys fs, dgrp_t group); 911 extern blk64_t ext2fs_inode_bitmap_loc(ext2_filsys fs, dgrp_t group); 912 extern void ext2fs_inode_bitmap_loc_set(ext2_filsys fs, dgrp_t group, 913 blk64_t blk); 914 extern blk64_t ext2fs_inode_table_loc(ext2_filsys fs, dgrp_t group); 915 extern void ext2fs_inode_table_loc_set(ext2_filsys fs, dgrp_t group, 916 blk64_t blk); 917 extern __u32 ext2fs_bg_free_blocks_count(ext2_filsys fs, dgrp_t group); 918 extern void ext2fs_bg_free_blocks_count_set(ext2_filsys fs, dgrp_t group, 919 __u32 n); 920 extern __u32 ext2fs_bg_free_inodes_count(ext2_filsys fs, dgrp_t group); 921 extern void ext2fs_bg_free_inodes_count_set(ext2_filsys fs, dgrp_t group, 922 __u32 n); 923 extern __u32 ext2fs_bg_used_dirs_count(ext2_filsys fs, dgrp_t group); 924 extern void ext2fs_bg_used_dirs_count_set(ext2_filsys fs, dgrp_t group, 925 __u32 n); 926 extern __u32 ext2fs_bg_itable_unused(ext2_filsys fs, dgrp_t group); 927 extern void ext2fs_bg_itable_unused_set(ext2_filsys fs, dgrp_t group, 928 __u32 n); 929 extern __u16 ext2fs_bg_flags(ext2_filsys fs, dgrp_t group); 930 extern void ext2fs_bg_flags_zap(ext2_filsys fs, dgrp_t group); 931 extern int ext2fs_bg_flags_test(ext2_filsys fs, dgrp_t group, __u16 bg_flag); 932 extern void ext2fs_bg_flags_set(ext2_filsys fs, dgrp_t group, __u16 bg_flags); 933 extern void ext2fs_bg_flags_clear(ext2_filsys fs, dgrp_t group, __u16 bg_flags); 934 extern __u16 ext2fs_bg_checksum(ext2_filsys fs, dgrp_t group); 935 extern void ext2fs_bg_checksum_set(ext2_filsys fs, dgrp_t group, __u16 checksum); 936 extern blk64_t ext2fs_file_acl_block(ext2_filsys fs, 937 const struct ext2_inode *inode); 938 extern void ext2fs_file_acl_block_set(ext2_filsys fs, 939 struct ext2_inode *inode, blk64_t blk); 940 extern errcode_t ext2fs_inode_size_set(ext2_filsys fs, struct ext2_inode *inode, 941 ext2_off64_t size); 942 943 /* block.c */ 944 extern errcode_t ext2fs_block_iterate(ext2_filsys fs, 945 ext2_ino_t ino, 946 int flags, 947 char *block_buf, 948 int (*func)(ext2_filsys fs, 949 blk_t *blocknr, 950 int blockcnt, 951 void *priv_data), 952 void *priv_data); 953 errcode_t ext2fs_block_iterate2(ext2_filsys fs, 954 ext2_ino_t ino, 955 int flags, 956 char *block_buf, 957 int (*func)(ext2_filsys fs, 958 blk_t *blocknr, 959 e2_blkcnt_t blockcnt, 960 blk_t ref_blk, 961 int ref_offset, 962 void *priv_data), 963 void *priv_data); 964 errcode_t ext2fs_block_iterate3(ext2_filsys fs, 965 ext2_ino_t ino, 966 int flags, 967 char *block_buf, 968 int (*func)(ext2_filsys fs, 969 blk64_t *blocknr, 970 e2_blkcnt_t blockcnt, 971 blk64_t ref_blk, 972 int ref_offset, 973 void *priv_data), 974 void *priv_data); 975 976 /* bmap.c */ 977 extern errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino, 978 struct ext2_inode *inode, 979 char *block_buf, int bmap_flags, 980 blk_t block, blk_t *phys_blk); 981 extern errcode_t ext2fs_bmap2(ext2_filsys fs, ext2_ino_t ino, 982 struct ext2_inode *inode, 983 char *block_buf, int bmap_flags, blk64_t block, 984 int *ret_flags, blk64_t *phys_blk); 985 errcode_t ext2fs_map_cluster_block(ext2_filsys fs, ext2_ino_t ino, 986 struct ext2_inode *inode, blk64_t lblk, 987 blk64_t *pblk); 988 989 #if 0 990 /* bmove.c */ 991 extern errcode_t ext2fs_move_blocks(ext2_filsys fs, 992 ext2fs_block_bitmap reserve, 993 ext2fs_block_bitmap alloc_map, 994 int flags); 995 #endif 996 997 /* check_desc.c */ 998 extern errcode_t ext2fs_check_desc(ext2_filsys fs); 999 1000 /* closefs.c */ 1001 extern errcode_t ext2fs_close(ext2_filsys fs); 1002 extern errcode_t ext2fs_close2(ext2_filsys fs, int flags); 1003 extern errcode_t ext2fs_close_free(ext2_filsys *fs); 1004 extern errcode_t ext2fs_flush(ext2_filsys fs); 1005 extern errcode_t ext2fs_flush2(ext2_filsys fs, int flags); 1006 extern int ext2fs_bg_has_super(ext2_filsys fs, dgrp_t group_block); 1007 extern errcode_t ext2fs_super_and_bgd_loc2(ext2_filsys fs, 1008 dgrp_t group, 1009 blk64_t *ret_super_blk, 1010 blk64_t *ret_old_desc_blk, 1011 blk64_t *ret_new_desc_blk, 1012 blk_t *ret_used_blks); 1013 extern int ext2fs_super_and_bgd_loc(ext2_filsys fs, 1014 dgrp_t group, 1015 blk_t *ret_super_blk, 1016 blk_t *ret_old_desc_blk, 1017 blk_t *ret_new_desc_blk, 1018 int *ret_meta_bg); 1019 extern void ext2fs_update_dynamic_rev(ext2_filsys fs); 1020 1021 /* crc32c.c */ 1022 extern __u32 ext2fs_crc32_be(__u32 crc, unsigned char const *p, size_t len); 1023 extern __u32 ext2fs_crc32c_le(__u32 crc, unsigned char const *p, size_t len); 1024 1025 /* csum.c */ 1026 extern void ext2fs_init_csum_seed(ext2_filsys fs); 1027 extern errcode_t ext2fs_mmp_csum_set(ext2_filsys fs, struct mmp_struct *mmp); 1028 extern int ext2fs_mmp_csum_verify(ext2_filsys, struct mmp_struct *mmp); 1029 extern int ext2fs_verify_csum_type(ext2_filsys fs, struct ext2_super_block *sb); 1030 extern errcode_t ext2fs_superblock_csum_set(ext2_filsys fs, 1031 struct ext2_super_block *sb); 1032 extern int ext2fs_superblock_csum_verify(ext2_filsys fs, 1033 struct ext2_super_block *sb); 1034 extern errcode_t ext2fs_ext_attr_block_csum_set(ext2_filsys fs, 1035 ext2_ino_t inum, blk64_t block, 1036 struct ext2_ext_attr_header *hdr); 1037 extern int ext2fs_ext_attr_block_csum_verify(ext2_filsys fs, ext2_ino_t inum, 1038 blk64_t block, 1039 struct ext2_ext_attr_header *hdr); 1040 #define EXT2_DIRENT_TAIL(block, blocksize) \ 1041 ((struct ext2_dir_entry_tail *)(((char *)(block)) + \ 1042 (blocksize) - sizeof(struct ext2_dir_entry_tail))) 1043 1044 extern void ext2fs_initialize_dirent_tail(ext2_filsys fs, 1045 struct ext2_dir_entry_tail *t); 1046 extern int ext2fs_dirent_has_tail(ext2_filsys fs, 1047 struct ext2_dir_entry *dirent); 1048 extern int ext2fs_dirent_csum_verify(ext2_filsys fs, ext2_ino_t inum, 1049 struct ext2_dir_entry *dirent); 1050 extern int ext2fs_dir_block_csum_verify(ext2_filsys fs, ext2_ino_t inum, 1051 struct ext2_dir_entry *dirent); 1052 extern errcode_t ext2fs_dir_block_csum_set(ext2_filsys fs, ext2_ino_t inum, 1053 struct ext2_dir_entry *dirent); 1054 extern errcode_t ext2fs_get_dx_countlimit(ext2_filsys fs, 1055 struct ext2_dir_entry *dirent, 1056 struct ext2_dx_countlimit **cc, 1057 int *offset); 1058 extern errcode_t ext2fs_extent_block_csum_set(ext2_filsys fs, 1059 ext2_ino_t inum, 1060 struct ext3_extent_header *eh); 1061 extern int ext2fs_extent_block_csum_verify(ext2_filsys fs, 1062 ext2_ino_t inum, 1063 struct ext3_extent_header *eh); 1064 extern errcode_t ext2fs_block_bitmap_csum_set(ext2_filsys fs, dgrp_t group, 1065 char *bitmap, int size); 1066 extern int ext2fs_block_bitmap_csum_verify(ext2_filsys fs, dgrp_t group, 1067 char *bitmap, int size); 1068 extern errcode_t ext2fs_inode_bitmap_csum_set(ext2_filsys fs, dgrp_t group, 1069 char *bitmap, int size); 1070 extern int ext2fs_inode_bitmap_csum_verify(ext2_filsys fs, dgrp_t group, 1071 char *bitmap, int size); 1072 extern errcode_t ext2fs_inode_csum_set(ext2_filsys fs, ext2_ino_t inum, 1073 struct ext2_inode_large *inode); 1074 extern int ext2fs_inode_csum_verify(ext2_filsys fs, ext2_ino_t inum, 1075 struct ext2_inode_large *inode); 1076 extern void ext2fs_group_desc_csum_set(ext2_filsys fs, dgrp_t group); 1077 extern int ext2fs_group_desc_csum_verify(ext2_filsys fs, dgrp_t group); 1078 extern errcode_t ext2fs_set_gdt_csum(ext2_filsys fs); 1079 extern __u16 ext2fs_group_desc_csum(ext2_filsys fs, dgrp_t group); 1080 1081 /* dblist.c */ 1082 extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist); 1083 extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ext2_ino_t ino, 1084 blk_t blk, int blockcnt); 1085 extern errcode_t ext2fs_add_dir_block2(ext2_dblist dblist, ext2_ino_t ino, 1086 blk64_t blk, e2_blkcnt_t blockcnt); 1087 extern void ext2fs_dblist_sort(ext2_dblist dblist, 1088 EXT2_QSORT_TYPE (*sortfunc)(const void *, 1089 const void *)); 1090 extern void ext2fs_dblist_sort2(ext2_dblist dblist, 1091 EXT2_QSORT_TYPE (*sortfunc)(const void *, 1092 const void *)); 1093 extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist, 1094 int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info, 1095 void *priv_data), 1096 void *priv_data); 1097 extern errcode_t ext2fs_dblist_iterate2(ext2_dblist dblist, 1098 int (*func)(ext2_filsys fs, struct ext2_db_entry2 *db_info, 1099 void *priv_data), 1100 void *priv_data); 1101 extern errcode_t ext2fs_dblist_iterate3(ext2_dblist dblist, 1102 int (*func)(ext2_filsys fs, struct ext2_db_entry2 *db_info, 1103 void *priv_data), 1104 unsigned long long start, 1105 unsigned long long count, 1106 void *priv_data); 1107 extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ext2_ino_t ino, 1108 blk_t blk, int blockcnt); 1109 extern errcode_t ext2fs_set_dir_block2(ext2_dblist dblist, ext2_ino_t ino, 1110 blk64_t blk, e2_blkcnt_t blockcnt); 1111 extern errcode_t ext2fs_copy_dblist(ext2_dblist src, 1112 ext2_dblist *dest); 1113 extern int ext2fs_dblist_count(ext2_dblist dblist); 1114 extern blk64_t ext2fs_dblist_count2(ext2_dblist dblist); 1115 extern errcode_t ext2fs_dblist_get_last(ext2_dblist dblist, 1116 struct ext2_db_entry **entry); 1117 extern errcode_t ext2fs_dblist_get_last2(ext2_dblist dblist, 1118 struct ext2_db_entry2 **entry); 1119 extern errcode_t ext2fs_dblist_drop_last(ext2_dblist dblist); 1120 1121 /* dblist_dir.c */ 1122 extern errcode_t 1123 ext2fs_dblist_dir_iterate(ext2_dblist dblist, 1124 int flags, 1125 char *block_buf, 1126 int (*func)(ext2_ino_t dir, 1127 int entry, 1128 struct ext2_dir_entry *dirent, 1129 int offset, 1130 int blocksize, 1131 char *buf, 1132 void *priv_data), 1133 void *priv_data); 1134 1135 #if 0 1136 /* digest_encode.c */ 1137 #define EXT2FS_DIGEST_SIZE EXT2FS_SHA256_LENGTH 1138 extern int ext2fs_digest_encode(const char *src, int len, char *dst); 1139 extern int ext2fs_digest_decode(const char *src, int len, char *dst); 1140 #endif 1141 1142 /* dirblock.c */ 1143 extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block, 1144 void *buf); 1145 extern errcode_t ext2fs_read_dir_block2(ext2_filsys fs, blk_t block, 1146 void *buf, int flags); 1147 extern errcode_t ext2fs_read_dir_block3(ext2_filsys fs, blk64_t block, 1148 void *buf, int flags); 1149 extern errcode_t ext2fs_read_dir_block4(ext2_filsys fs, blk64_t block, 1150 void *buf, int flags, ext2_ino_t ino); 1151 extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block, 1152 void *buf); 1153 extern errcode_t ext2fs_write_dir_block2(ext2_filsys fs, blk_t block, 1154 void *buf, int flags); 1155 extern errcode_t ext2fs_write_dir_block3(ext2_filsys fs, blk64_t block, 1156 void *buf, int flags); 1157 extern errcode_t ext2fs_write_dir_block4(ext2_filsys fs, blk64_t block, 1158 void *buf, int flags, ext2_ino_t ino); 1159 1160 /* dirhash.c */ 1161 extern errcode_t ext2fs_dirhash(int version, const char *name, int len, 1162 const __u32 *seed, 1163 ext2_dirhash_t *ret_hash, 1164 ext2_dirhash_t *ret_minor_hash); 1165 1166 1167 /* dir_iterate.c */ 1168 extern errcode_t ext2fs_get_rec_len(ext2_filsys fs, 1169 struct ext2_dir_entry *dirent, 1170 unsigned int *rec_len); 1171 extern errcode_t ext2fs_set_rec_len(ext2_filsys fs, 1172 unsigned int len, 1173 struct ext2_dir_entry *dirent); 1174 extern errcode_t ext2fs_dir_iterate(ext2_filsys fs, 1175 ext2_ino_t dir, 1176 int flags, 1177 char *block_buf, 1178 int (*func)(struct ext2_dir_entry *dirent, 1179 int offset, 1180 int blocksize, 1181 char *buf, 1182 void *priv_data), 1183 void *priv_data); 1184 extern errcode_t ext2fs_dir_iterate2(ext2_filsys fs, 1185 ext2_ino_t dir, 1186 int flags, 1187 char *block_buf, 1188 int (*func)(ext2_ino_t dir, 1189 int entry, 1190 struct ext2_dir_entry *dirent, 1191 int offset, 1192 int blocksize, 1193 char *buf, 1194 void *priv_data), 1195 void *priv_data); 1196 1197 /* dupfs.c */ 1198 extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest); 1199 1200 /* expanddir.c */ 1201 extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir); 1202 1203 /* ext_attr.c */ 1204 extern __u32 ext2fs_ext_attr_hash_entry(struct ext2_ext_attr_entry *entry, 1205 void *data); 1206 extern errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf); 1207 extern errcode_t ext2fs_read_ext_attr2(ext2_filsys fs, blk64_t block, 1208 void *buf); 1209 extern errcode_t ext2fs_read_ext_attr3(ext2_filsys fs, blk64_t block, 1210 void *buf, ext2_ino_t inum); 1211 extern errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block, 1212 void *buf); 1213 extern errcode_t ext2fs_write_ext_attr2(ext2_filsys fs, blk64_t block, 1214 void *buf); 1215 extern errcode_t ext2fs_write_ext_attr3(ext2_filsys fs, blk64_t block, 1216 void *buf, ext2_ino_t inum); 1217 extern errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk, 1218 char *block_buf, 1219 int adjust, __u32 *newcount); 1220 extern errcode_t ext2fs_adjust_ea_refcount2(ext2_filsys fs, blk64_t blk, 1221 char *block_buf, 1222 int adjust, __u32 *newcount); 1223 extern errcode_t ext2fs_adjust_ea_refcount3(ext2_filsys fs, blk64_t blk, 1224 char *block_buf, 1225 int adjust, __u32 *newcount, 1226 ext2_ino_t inum); 1227 errcode_t ext2fs_xattrs_write(struct ext2_xattr_handle *handle); 1228 errcode_t ext2fs_xattrs_read(struct ext2_xattr_handle *handle); 1229 errcode_t ext2fs_xattrs_iterate(struct ext2_xattr_handle *h, 1230 int (*func)(char *name, char *value, 1231 size_t value_len, void *data), 1232 void *data); 1233 errcode_t ext2fs_xattr_get(struct ext2_xattr_handle *h, const char *key, 1234 void **value, size_t *value_len); 1235 errcode_t ext2fs_xattr_set(struct ext2_xattr_handle *handle, 1236 const char *key, 1237 const void *value, 1238 size_t value_len); 1239 errcode_t ext2fs_xattr_remove(struct ext2_xattr_handle *handle, 1240 const char *key); 1241 errcode_t ext2fs_xattrs_open(ext2_filsys fs, ext2_ino_t ino, 1242 struct ext2_xattr_handle **handle); 1243 errcode_t ext2fs_xattrs_close(struct ext2_xattr_handle **handle); 1244 errcode_t ext2fs_free_ext_attr(ext2_filsys fs, ext2_ino_t ino, 1245 struct ext2_inode_large *inode); 1246 errcode_t ext2fs_xattrs_count(struct ext2_xattr_handle *handle, size_t *count); 1247 errcode_t ext2fs_xattr_inode_max_size(ext2_filsys fs, ext2_ino_t ino, 1248 size_t *size); 1249 1250 /* extent.c */ 1251 extern errcode_t ext2fs_extent_header_verify(void *ptr, int size); 1252 extern errcode_t ext2fs_extent_open(ext2_filsys fs, ext2_ino_t ino, 1253 ext2_extent_handle_t *handle); 1254 extern errcode_t ext2fs_extent_open2(ext2_filsys fs, ext2_ino_t ino, 1255 struct ext2_inode *inode, 1256 ext2_extent_handle_t *ret_handle); 1257 extern void ext2fs_extent_free(ext2_extent_handle_t handle); 1258 extern errcode_t ext2fs_extent_get(ext2_extent_handle_t handle, 1259 int flags, struct ext2fs_extent *extent); 1260 extern errcode_t ext2fs_extent_node_split(ext2_extent_handle_t handle); 1261 extern errcode_t ext2fs_extent_replace(ext2_extent_handle_t handle, int flags, 1262 struct ext2fs_extent *extent); 1263 extern errcode_t ext2fs_extent_insert(ext2_extent_handle_t handle, int flags, 1264 struct ext2fs_extent *extent); 1265 extern errcode_t ext2fs_extent_set_bmap(ext2_extent_handle_t handle, 1266 blk64_t logical, blk64_t physical, 1267 int flags); 1268 extern errcode_t ext2fs_extent_delete(ext2_extent_handle_t handle, int flags); 1269 extern errcode_t ext2fs_extent_get_info(ext2_extent_handle_t handle, 1270 struct ext2_extent_info *info); 1271 extern errcode_t ext2fs_extent_goto(ext2_extent_handle_t handle, 1272 blk64_t blk); 1273 extern errcode_t ext2fs_extent_goto2(ext2_extent_handle_t handle, 1274 int leaf_level, blk64_t blk); 1275 extern errcode_t ext2fs_extent_fix_parents(ext2_extent_handle_t handle); 1276 size_t ext2fs_max_extent_depth(ext2_extent_handle_t handle); 1277 1278 /* fallocate.c */ 1279 #define EXT2_FALLOCATE_ZERO_BLOCKS (0x1) 1280 #define EXT2_FALLOCATE_FORCE_INIT (0x2) 1281 #define EXT2_FALLOCATE_FORCE_UNINIT (0x4) 1282 #define EXT2_FALLOCATE_INIT_BEYOND_EOF (0x8) 1283 #define EXT2_FALLOCATE_ALL_FLAGS (0xF) 1284 errcode_t ext2fs_fallocate(ext2_filsys fs, int flags, ext2_ino_t ino, 1285 struct ext2_inode *inode, blk64_t goal, 1286 blk64_t start, blk64_t len); 1287 1288 /* fileio.c */ 1289 extern errcode_t ext2fs_file_open2(ext2_filsys fs, ext2_ino_t ino, 1290 struct ext2_inode *inode, 1291 int flags, ext2_file_t *ret); 1292 extern errcode_t ext2fs_file_open(ext2_filsys fs, ext2_ino_t ino, 1293 int flags, ext2_file_t *ret); 1294 extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file); 1295 struct ext2_inode *ext2fs_file_get_inode(ext2_file_t file); 1296 extern ext2_ino_t ext2fs_file_get_inode_num(ext2_file_t file); 1297 extern errcode_t ext2fs_file_close(ext2_file_t file); 1298 extern errcode_t ext2fs_file_flush(ext2_file_t file); 1299 extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf, 1300 unsigned int wanted, unsigned int *got); 1301 extern errcode_t ext2fs_file_write(ext2_file_t file, const void *buf, 1302 unsigned int nbytes, unsigned int *written); 1303 extern errcode_t ext2fs_file_llseek(ext2_file_t file, __u64 offset, 1304 int whence, __u64 *ret_pos); 1305 extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset, 1306 int whence, ext2_off_t *ret_pos); 1307 errcode_t ext2fs_file_get_lsize(ext2_file_t file, __u64 *ret_size); 1308 extern ext2_off_t ext2fs_file_get_size(ext2_file_t file); 1309 extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size); 1310 extern errcode_t ext2fs_file_set_size2(ext2_file_t file, ext2_off64_t size); 1311 1312 /* finddev.c */ 1313 extern char *ext2fs_find_block_device(dev_t device); 1314 1315 /* flushb.c */ 1316 extern errcode_t ext2fs_sync_device(int fd, int flushb); 1317 1318 /* freefs.c */ 1319 extern void ext2fs_free(ext2_filsys fs); 1320 extern void ext2fs_free_dblist(ext2_dblist dblist); 1321 extern void ext2fs_badblocks_list_free(ext2_badblocks_list bb); 1322 extern void ext2fs_u32_list_free(ext2_u32_list bb); 1323 1324 /* gen_bitmap.c */ 1325 extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap); 1326 extern errcode_t ext2fs_make_generic_bitmap(errcode_t magic, ext2_filsys fs, 1327 __u32 start, __u32 end, 1328 __u32 real_end, 1329 const char *descr, char *init_map, 1330 ext2fs_generic_bitmap *ret); 1331 extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start, 1332 __u32 end, 1333 __u32 real_end, 1334 const char *descr, 1335 ext2fs_generic_bitmap *ret); 1336 extern errcode_t ext2fs_copy_generic_bitmap(ext2fs_generic_bitmap src, 1337 ext2fs_generic_bitmap *dest); 1338 extern void ext2fs_clear_generic_bitmap(ext2fs_generic_bitmap bitmap); 1339 extern errcode_t ext2fs_fudge_generic_bitmap_end(ext2fs_inode_bitmap bitmap, 1340 errcode_t magic, 1341 errcode_t neq, 1342 ext2_ino_t end, 1343 ext2_ino_t *oend); 1344 extern void ext2fs_set_generic_bitmap_padding(ext2fs_generic_bitmap map); 1345 extern errcode_t ext2fs_resize_generic_bitmap(errcode_t magic, 1346 __u32 new_end, 1347 __u32 new_real_end, 1348 ext2fs_generic_bitmap bmap); 1349 extern errcode_t ext2fs_compare_generic_bitmap(errcode_t magic, errcode_t neq, 1350 ext2fs_generic_bitmap bm1, 1351 ext2fs_generic_bitmap bm2); 1352 extern errcode_t ext2fs_get_generic_bitmap_range(ext2fs_generic_bitmap bmap, 1353 errcode_t magic, 1354 __u32 start, __u32 num, 1355 void *out); 1356 extern errcode_t ext2fs_set_generic_bitmap_range(ext2fs_generic_bitmap bmap, 1357 errcode_t magic, 1358 __u32 start, __u32 num, 1359 void *in); 1360 extern errcode_t ext2fs_find_first_zero_generic_bitmap(ext2fs_generic_bitmap bitmap, 1361 __u32 start, __u32 end, 1362 __u32 *out); 1363 extern errcode_t ext2fs_find_first_set_generic_bitmap(ext2fs_generic_bitmap bitmap, 1364 __u32 start, __u32 end, 1365 __u32 *out); 1366 1367 /* gen_bitmap64.c */ 1368 void ext2fs_free_generic_bmap(ext2fs_generic_bitmap bmap); 1369 errcode_t ext2fs_alloc_generic_bmap(ext2_filsys fs, errcode_t magic, 1370 int type, __u64 start, __u64 end, 1371 __u64 real_end, 1372 const char *descr, 1373 ext2fs_generic_bitmap *ret); 1374 errcode_t ext2fs_copy_generic_bmap(ext2fs_generic_bitmap src, 1375 ext2fs_generic_bitmap *dest); 1376 void ext2fs_clear_generic_bmap(ext2fs_generic_bitmap bitmap); 1377 errcode_t ext2fs_fudge_generic_bmap_end(ext2fs_generic_bitmap bitmap, 1378 errcode_t neq, 1379 __u64 end, __u64 *oend); 1380 void ext2fs_set_generic_bmap_padding(ext2fs_generic_bitmap bmap); 1381 errcode_t ext2fs_resize_generic_bmap(ext2fs_generic_bitmap bmap, 1382 __u64 new_end, 1383 __u64 new_real_end); 1384 errcode_t ext2fs_compare_generic_bmap(errcode_t neq, 1385 ext2fs_generic_bitmap bm1, 1386 ext2fs_generic_bitmap bm2); 1387 errcode_t ext2fs_get_generic_bmap_range(ext2fs_generic_bitmap bmap, 1388 __u64 start, unsigned int num, 1389 void *out); 1390 errcode_t ext2fs_set_generic_bmap_range(ext2fs_generic_bitmap bmap, 1391 __u64 start, unsigned int num, 1392 void *in); 1393 errcode_t ext2fs_convert_subcluster_bitmap(ext2_filsys fs, 1394 ext2fs_block_bitmap *bitmap); 1395 1396 /* get_num_dirs.c */ 1397 extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs); 1398 1399 /* getsize.c */ 1400 extern errcode_t ext2fs_get_device_size(const char *file, int blocksize, 1401 blk_t *retblocks); 1402 extern errcode_t ext2fs_get_device_size2(const char *file, int blocksize, 1403 blk64_t *retblocks); 1404 1405 /* getsectsize.c */ 1406 extern int ext2fs_get_dio_alignment(int fd); 1407 errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize); 1408 errcode_t ext2fs_get_device_phys_sectsize(const char *file, int *sectsize); 1409 1410 /* i_block.c */ 1411 errcode_t ext2fs_iblk_add_blocks(ext2_filsys fs, struct ext2_inode *inode, 1412 blk64_t num_blocks); 1413 errcode_t ext2fs_iblk_sub_blocks(ext2_filsys fs, struct ext2_inode *inode, 1414 blk64_t num_blocks); 1415 errcode_t ext2fs_iblk_set(ext2_filsys fs, struct ext2_inode *inode, blk64_t b); 1416 1417 /* imager.c */ 1418 extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags); 1419 extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags); 1420 extern errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd, int flags); 1421 extern errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd, int flags); 1422 extern errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags); 1423 extern errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags); 1424 1425 /* ind_block.c */ 1426 errcode_t ext2fs_read_ind_block(ext2_filsys fs, blk_t blk, void *buf); 1427 errcode_t ext2fs_write_ind_block(ext2_filsys fs, blk_t blk, void *buf); 1428 1429 /* initialize.c */ 1430 extern errcode_t ext2fs_initialize(const char *name, int flags, 1431 struct ext2_super_block *param, 1432 io_manager manager, ext2_filsys *ret_fs); 1433 1434 /* icount.c */ 1435 extern void ext2fs_free_icount(ext2_icount_t icount); 1436 extern errcode_t ext2fs_create_icount_tdb(ext2_filsys fs, char *tdb_dir, 1437 int flags, ext2_icount_t *ret); 1438 extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags, 1439 unsigned int size, 1440 ext2_icount_t hint, ext2_icount_t *ret); 1441 extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags, 1442 unsigned int size, 1443 ext2_icount_t *ret); 1444 extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ext2_ino_t ino, 1445 __u16 *ret); 1446 extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ext2_ino_t ino, 1447 __u16 *ret); 1448 extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ext2_ino_t ino, 1449 __u16 *ret); 1450 extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ext2_ino_t ino, 1451 __u16 count); 1452 extern ext2_ino_t ext2fs_get_icount_size(ext2_icount_t icount); 1453 errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *); 1454 1455 /* inline.c */ 1456 1457 extern errcode_t ext2fs_get_memalign(unsigned long size, 1458 unsigned long align, void *ptr); 1459 1460 /* inline_data.c */ 1461 extern errcode_t ext2fs_inline_data_init(ext2_filsys fs, ext2_ino_t ino); 1462 extern errcode_t ext2fs_inline_data_size(ext2_filsys fs, ext2_ino_t ino, 1463 size_t *size); 1464 extern errcode_t ext2fs_inline_data_get(ext2_filsys fs, ext2_ino_t ino, 1465 struct ext2_inode *inode, 1466 void *buf, size_t *size); 1467 extern errcode_t ext2fs_inline_data_set(ext2_filsys fs, ext2_ino_t ino, 1468 struct ext2_inode *inode, 1469 void *buf, size_t size); 1470 1471 /* inode.c */ 1472 extern errcode_t ext2fs_create_inode_cache(ext2_filsys fs, 1473 unsigned int cache_size); 1474 extern void ext2fs_free_inode_cache(struct ext2_inode_cache *icache); 1475 extern errcode_t ext2fs_flush_icache(ext2_filsys fs); 1476 extern errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan, 1477 ext2_ino_t *ino, 1478 struct ext2_inode *inode, 1479 int bufsize); 1480 #define EXT2_INODE_SCAN_DEFAULT_BUFFER_BLOCKS 8 1481 extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks, 1482 ext2_inode_scan *ret_scan); 1483 extern void ext2fs_close_inode_scan(ext2_inode_scan scan); 1484 extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino, 1485 struct ext2_inode *inode); 1486 extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan, 1487 int group); 1488 extern void ext2fs_set_inode_callback 1489 (ext2_inode_scan scan, 1490 errcode_t (*done_group)(ext2_filsys fs, 1491 ext2_inode_scan scan, 1492 dgrp_t group, 1493 void * priv_data), 1494 void *done_group_data); 1495 extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags, 1496 int clear_flags); 1497 extern errcode_t ext2fs_read_inode_full(ext2_filsys fs, ext2_ino_t ino, 1498 struct ext2_inode * inode, 1499 int bufsize); 1500 extern errcode_t ext2fs_read_inode (ext2_filsys fs, ext2_ino_t ino, 1501 struct ext2_inode * inode); 1502 extern errcode_t ext2fs_write_inode_full(ext2_filsys fs, ext2_ino_t ino, 1503 struct ext2_inode * inode, 1504 int bufsize); 1505 extern errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino, 1506 struct ext2_inode * inode); 1507 extern errcode_t ext2fs_write_new_inode(ext2_filsys fs, ext2_ino_t ino, 1508 struct ext2_inode * inode); 1509 extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); 1510 extern errcode_t ext2fs_check_directory(ext2_filsys fs, ext2_ino_t ino); 1511 1512 /* inode_io.c */ 1513 extern io_manager inode_io_manager; 1514 extern errcode_t ext2fs_inode_io_intern(ext2_filsys fs, ext2_ino_t ino, 1515 char **name); 1516 extern errcode_t ext2fs_inode_io_intern2(ext2_filsys fs, ext2_ino_t ino, 1517 struct ext2_inode *inode, 1518 char **name); 1519 1520 /* ismounted.c */ 1521 extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags); 1522 extern errcode_t ext2fs_check_mount_point(const char *device, int *mount_flags, 1523 char *mtpt, int mtlen); 1524 1525 /* punch.c */ 1526 /* 1527 * NOTE: This function removes from an inode the blocks "start", "end", and 1528 * every block in between. 1529 */ 1530 extern errcode_t ext2fs_punch(ext2_filsys fs, ext2_ino_t ino, 1531 struct ext2_inode *inode, 1532 char *block_buf, blk64_t start, 1533 blk64_t end); 1534 1535 /* namei.c */ 1536 extern errcode_t ext2fs_lookup(ext2_filsys fs, ext2_ino_t dir, const char *name, 1537 int namelen, char *buf, ext2_ino_t *inode); 1538 extern errcode_t ext2fs_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1539 const char *name, ext2_ino_t *inode); 1540 errcode_t ext2fs_namei_follow(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1541 const char *name, ext2_ino_t *inode); 1542 extern errcode_t ext2fs_follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1543 ext2_ino_t inode, ext2_ino_t *res_inode); 1544 1545 /* native.c */ 1546 int ext2fs_native_flag(void); 1547 1548 /* newdir.c */ 1549 extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino, 1550 ext2_ino_t parent_ino, char **block); 1551 extern errcode_t ext2fs_new_dir_inline_data(ext2_filsys fs, ext2_ino_t dir_ino, 1552 ext2_ino_t parent_ino, __u32 *iblock); 1553 1554 /* mkdir.c */ 1555 extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum, 1556 const char *name); 1557 1558 /* mkjournal.c */ 1559 extern errcode_t ext2fs_zero_blocks(ext2_filsys fs, blk_t blk, int num, 1560 blk_t *ret_blk, int *ret_count); 1561 extern errcode_t ext2fs_zero_blocks2(ext2_filsys fs, blk64_t blk, int num, 1562 blk64_t *ret_blk, int *ret_count); 1563 extern errcode_t ext2fs_create_journal_superblock(ext2_filsys fs, 1564 __u32 num_blocks, int flags, 1565 char **ret_jsb); 1566 extern errcode_t ext2fs_add_journal_device(ext2_filsys fs, 1567 ext2_filsys journal_dev); 1568 extern errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t num_blocks, 1569 int flags); 1570 extern errcode_t ext2fs_add_journal_inode2(ext2_filsys fs, blk_t num_blocks, 1571 blk64_t goal, int flags); 1572 extern int ext2fs_default_journal_size(__u64 num_blocks); 1573 extern int ext2fs_journal_sb_start(int blocksize); 1574 1575 /* openfs.c */ 1576 extern errcode_t ext2fs_open(const char *name, int flags, int superblock, 1577 unsigned int block_size, io_manager manager, 1578 ext2_filsys *ret_fs); 1579 extern errcode_t ext2fs_open2(const char *name, const char *io_options, 1580 int flags, int superblock, 1581 unsigned int block_size, io_manager manager, 1582 ext2_filsys *ret_fs); 1583 /* 1584 * The dgrp_t argument to these two functions is not actually a group number 1585 * but a block number offset within a group table! Convert with the formula 1586 * (group_number / groups_per_block). 1587 */ 1588 extern blk64_t ext2fs_descriptor_block_loc2(ext2_filsys fs, 1589 blk64_t group_block, dgrp_t i); 1590 extern blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block, 1591 dgrp_t i); 1592 errcode_t ext2fs_get_data_io(ext2_filsys fs, io_channel *old_io); 1593 errcode_t ext2fs_set_data_io(ext2_filsys fs, io_channel new_io); 1594 errcode_t ext2fs_rewrite_to_io(ext2_filsys fs, io_channel new_io); 1595 1596 /* get_pathname.c */ 1597 extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino, 1598 char **name); 1599 1600 /* link.c */ 1601 errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name, 1602 ext2_ino_t ino, int flags); 1603 errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir, const char *name, 1604 ext2_ino_t ino, int flags); 1605 1606 /* symlink.c */ 1607 errcode_t ext2fs_symlink(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t ino, 1608 const char *name, const char *target); 1609 1610 /* mmp.c */ 1611 errcode_t ext2fs_mmp_read(ext2_filsys fs, blk64_t mmp_blk, void *buf); 1612 errcode_t ext2fs_mmp_write(ext2_filsys fs, blk64_t mmp_blk, void *buf); 1613 errcode_t ext2fs_mmp_clear(ext2_filsys fs); 1614 errcode_t ext2fs_mmp_init(ext2_filsys fs); 1615 errcode_t ext2fs_mmp_start(ext2_filsys fs); 1616 errcode_t ext2fs_mmp_update(ext2_filsys fs); 1617 errcode_t ext2fs_mmp_update2(ext2_filsys fs, int immediately); 1618 errcode_t ext2fs_mmp_stop(ext2_filsys fs); 1619 unsigned ext2fs_mmp_new_seq(void); 1620 1621 /* read_bb.c */ 1622 extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs, 1623 ext2_badblocks_list *bb_list); 1624 1625 /* read_bb_file.c */ 1626 extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f, 1627 ext2_badblocks_list *bb_list, 1628 void *priv_data, 1629 void (*invalid)(ext2_filsys fs, 1630 blk_t blk, 1631 char *badstr, 1632 void *priv_data)); 1633 extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f, 1634 ext2_badblocks_list *bb_list, 1635 void (*invalid)(ext2_filsys fs, 1636 blk_t blk)); 1637 1638 /* res_gdt.c */ 1639 extern errcode_t ext2fs_create_resize_inode(ext2_filsys fs); 1640 1641 /*sha256.c */ 1642 #define EXT2FS_SHA256_LENGTH 32 1643 #if 0 1644 extern void ext2fs_sha256(const unsigned char *in, unsigned long in_size, 1645 unsigned char out[EXT2FS_SHA256_LENGTH]); 1646 #endif 1647 1648 /* sha512.c */ 1649 #define EXT2FS_SHA512_LENGTH 64 1650 extern void ext2fs_sha512(const unsigned char *in, unsigned long in_size, 1651 unsigned char out[EXT2FS_SHA512_LENGTH]); 1652 1653 /* swapfs.c */ 1654 extern errcode_t ext2fs_dirent_swab_in2(ext2_filsys fs, char *buf, size_t size, 1655 int flags); 1656 extern errcode_t ext2fs_dirent_swab_in(ext2_filsys fs, char *buf, int flags); 1657 extern errcode_t ext2fs_dirent_swab_out2(ext2_filsys fs, char *buf, size_t size, 1658 int flags); 1659 extern errcode_t ext2fs_dirent_swab_out(ext2_filsys fs, char *buf, int flags); 1660 extern void ext2fs_swap_ext_attr(char *to, char *from, int bufsize, 1661 int has_header); 1662 extern void ext2fs_swap_ext_attr_header(struct ext2_ext_attr_header *to_header, 1663 struct ext2_ext_attr_header *from_hdr); 1664 extern void ext2fs_swap_ext_attr_entry(struct ext2_ext_attr_entry *to_entry, 1665 struct ext2_ext_attr_entry *from_entry); 1666 extern void ext2fs_swap_super(struct ext2_super_block * super); 1667 extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp); 1668 extern void ext2fs_swap_group_desc2(ext2_filsys, struct ext2_group_desc *gdp); 1669 extern void ext2fs_swap_inode_full(ext2_filsys fs, struct ext2_inode_large *t, 1670 struct ext2_inode_large *f, int hostorder, 1671 int bufsize); 1672 extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t, 1673 struct ext2_inode *f, int hostorder); 1674 extern void ext2fs_swap_mmp(struct mmp_struct *mmp); 1675 1676 /* unix_io.c */ 1677 extern int ext2fs_open_file(const char *pathname, int flags, mode_t mode); 1678 extern int ext2fs_stat(const char *path, ext2fs_struct_stat *buf); 1679 extern int ext2fs_fstat(int fd, ext2fs_struct_stat *buf); 1680 1681 /* valid_blk.c */ 1682 extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode); 1683 extern int ext2fs_inode_has_valid_blocks2(ext2_filsys fs, 1684 struct ext2_inode *inode); 1685 1686 /* version.c */ 1687 extern int ext2fs_parse_version_string(const char *ver_string); 1688 extern int ext2fs_get_library_version(const char **ver_string, 1689 const char **date_string); 1690 1691 /* write_bb_file.c */ 1692 extern errcode_t ext2fs_write_bb_FILE(ext2_badblocks_list bb_list, 1693 unsigned int flags, 1694 FILE *f); 1695 1696 1697 /* inline functions */ 1698 #ifdef NO_INLINE_FUNCS 1699 extern errcode_t ext2fs_get_mem(unsigned long size, void *ptr); 1700 extern errcode_t ext2fs_get_memzero(unsigned long size, void *ptr); 1701 extern errcode_t ext2fs_get_array(unsigned long count, 1702 unsigned long size, void *ptr); 1703 extern errcode_t ext2fs_get_arrayzero(unsigned long count, 1704 unsigned long size, void *ptr); 1705 extern errcode_t ext2fs_free_mem(void *ptr); 1706 extern errcode_t ext2fs_resize_mem(unsigned long old_size, 1707 unsigned long size, void *ptr); 1708 extern void ext2fs_mark_super_dirty(ext2_filsys fs); 1709 extern void ext2fs_mark_changed(ext2_filsys fs); 1710 extern int ext2fs_test_changed(ext2_filsys fs); 1711 extern void ext2fs_mark_valid(ext2_filsys fs); 1712 extern void ext2fs_unmark_valid(ext2_filsys fs); 1713 extern int ext2fs_test_valid(ext2_filsys fs); 1714 extern void ext2fs_mark_ib_dirty(ext2_filsys fs); 1715 extern void ext2fs_mark_bb_dirty(ext2_filsys fs); 1716 extern int ext2fs_test_ib_dirty(ext2_filsys fs); 1717 extern int ext2fs_test_bb_dirty(ext2_filsys fs); 1718 extern dgrp_t ext2fs_group_of_blk(ext2_filsys fs, blk_t blk); 1719 extern dgrp_t ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino); 1720 extern blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group); 1721 extern blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group); 1722 extern blk_t ext2fs_inode_data_blocks(ext2_filsys fs, 1723 struct ext2_inode *inode); 1724 extern unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b); 1725 extern __u64 ext2fs_div64_ceil(__u64 a, __u64 b); 1726 extern int ext2fs_dirent_name_len(const struct ext2_dir_entry *entry); 1727 extern void ext2fs_dirent_set_name_len(struct ext2_dir_entry *entry, int len); 1728 extern int ext2fs_dirent_file_type(const struct ext2_dir_entry *entry); 1729 extern void ext2fs_dirent_set_file_type(struct ext2_dir_entry *entry, int type); 1730 extern struct ext2_inode *ext2fs_inode(struct ext2_inode_large * large_inode); 1731 extern const struct ext2_inode *ext2fs_const_inode(const struct ext2_inode_large * large_inode); 1732 1733 #endif 1734 1735 /* 1736 * The actual inlined functions definitions themselves... 1737 * 1738 * If NO_INLINE_FUNCS is defined, then we won't try to do inline 1739 * functions at all! 1740 */ 1741 #if (defined(INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS)) 1742 #ifdef INCLUDE_INLINE_FUNCS 1743 #define _INLINE_ extern 1744 #else 1745 #if (__STDC_VERSION__ >= 199901L) 1746 #define _INLINE_ inline 1747 #else 1748 #ifdef __GNUC__ 1749 #define _INLINE_ extern __inline__ 1750 #else /* For Watcom C */ 1751 #define _INLINE_ extern inline 1752 #endif /* __GNUC__ */ 1753 #endif /* __STDC_VERSION__ >= 199901L */ 1754 #endif 1755 1756 #ifndef EXT2_CUSTOM_MEMORY_ROUTINES 1757 #include <string.h> 1758 /* 1759 * Allocate memory. The 'ptr' arg must point to a pointer. 1760 */ 1761 _INLINE_ errcode_t ext2fs_get_mem(unsigned long size, void *ptr) 1762 { 1763 void *pp; 1764 1765 pp = malloc(size); 1766 if (!pp) 1767 return EXT2_ET_NO_MEMORY; 1768 memcpy(ptr, &pp, sizeof (pp)); 1769 return 0; 1770 } 1771 1772 _INLINE_ errcode_t ext2fs_get_memzero(unsigned long size, void *ptr) 1773 { 1774 void *pp; 1775 1776 pp = malloc(size); 1777 if (!pp) 1778 return EXT2_ET_NO_MEMORY; 1779 memset(pp, 0, size); 1780 memcpy(ptr, &pp, sizeof(pp)); 1781 return 0; 1782 } 1783 1784 _INLINE_ errcode_t ext2fs_get_array(unsigned long count, unsigned long size, void *ptr) 1785 { 1786 if (count && (~0UL)/count < size) 1787 return EXT2_ET_NO_MEMORY; 1788 return ext2fs_get_mem(count*size, ptr); 1789 } 1790 1791 _INLINE_ errcode_t ext2fs_get_arrayzero(unsigned long count, 1792 unsigned long size, void *ptr) 1793 { 1794 void *pp; 1795 1796 if (count && (~0UL)/count < size) 1797 return EXT2_ET_NO_MEMORY; 1798 pp = calloc(count, size); 1799 if (!pp) 1800 return EXT2_ET_NO_MEMORY; 1801 memcpy(ptr, &pp, sizeof(pp)); 1802 return 0; 1803 } 1804 1805 /* 1806 * Free memory. The 'ptr' arg must point to a pointer. 1807 */ 1808 _INLINE_ errcode_t ext2fs_free_mem(void *ptr) 1809 { 1810 void *p; 1811 1812 memcpy(&p, ptr, sizeof(p)); 1813 free(p); 1814 p = 0; 1815 memcpy(ptr, &p, sizeof(p)); 1816 return 0; 1817 } 1818 1819 /* 1820 * Resize memory. The 'ptr' arg must point to a pointer. 1821 */ 1822 _INLINE_ errcode_t ext2fs_resize_mem(unsigned long EXT2FS_ATTR((unused)) old_size, 1823 unsigned long size, void *ptr) 1824 { 1825 void *p; 1826 1827 /* Use "memcpy" for pointer assignments here to avoid problems 1828 * with C99 strict type aliasing rules. */ 1829 memcpy(&p, ptr, sizeof(p)); 1830 p = realloc(p, size); 1831 if (!p) 1832 return EXT2_ET_NO_MEMORY; 1833 memcpy(ptr, &p, sizeof(p)); 1834 return 0; 1835 } 1836 #endif /* Custom memory routines */ 1837 1838 /* 1839 * Mark a filesystem superblock as dirty 1840 */ 1841 _INLINE_ void ext2fs_mark_super_dirty(ext2_filsys fs) 1842 { 1843 fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_CHANGED; 1844 } 1845 1846 /* 1847 * Mark a filesystem as changed 1848 */ 1849 _INLINE_ void ext2fs_mark_changed(ext2_filsys fs) 1850 { 1851 fs->flags |= EXT2_FLAG_CHANGED; 1852 } 1853 1854 /* 1855 * Check to see if a filesystem has changed 1856 */ 1857 _INLINE_ int ext2fs_test_changed(ext2_filsys fs) 1858 { 1859 return (fs->flags & EXT2_FLAG_CHANGED); 1860 } 1861 1862 /* 1863 * Mark a filesystem as valid 1864 */ 1865 _INLINE_ void ext2fs_mark_valid(ext2_filsys fs) 1866 { 1867 fs->flags |= EXT2_FLAG_VALID; 1868 } 1869 1870 /* 1871 * Mark a filesystem as NOT valid 1872 */ 1873 _INLINE_ void ext2fs_unmark_valid(ext2_filsys fs) 1874 { 1875 fs->flags &= ~EXT2_FLAG_VALID; 1876 } 1877 1878 /* 1879 * Check to see if a filesystem is valid 1880 */ 1881 _INLINE_ int ext2fs_test_valid(ext2_filsys fs) 1882 { 1883 return (fs->flags & EXT2_FLAG_VALID); 1884 } 1885 1886 /* 1887 * Mark the inode bitmap as dirty 1888 */ 1889 _INLINE_ void ext2fs_mark_ib_dirty(ext2_filsys fs) 1890 { 1891 fs->flags |= EXT2_FLAG_IB_DIRTY | EXT2_FLAG_CHANGED; 1892 } 1893 1894 /* 1895 * Mark the block bitmap as dirty 1896 */ 1897 _INLINE_ void ext2fs_mark_bb_dirty(ext2_filsys fs) 1898 { 1899 fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_CHANGED; 1900 } 1901 1902 /* 1903 * Check to see if a filesystem's inode bitmap is dirty 1904 */ 1905 _INLINE_ int ext2fs_test_ib_dirty(ext2_filsys fs) 1906 { 1907 return (fs->flags & EXT2_FLAG_IB_DIRTY); 1908 } 1909 1910 /* 1911 * Check to see if a filesystem's block bitmap is dirty 1912 */ 1913 _INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs) 1914 { 1915 return (fs->flags & EXT2_FLAG_BB_DIRTY); 1916 } 1917 1918 /* 1919 * Return the group # of a block 1920 */ 1921 _INLINE_ dgrp_t ext2fs_group_of_blk(ext2_filsys fs, blk_t blk) 1922 { 1923 return ext2fs_group_of_blk2(fs, blk); 1924 } 1925 /* 1926 * Return the group # of an inode number 1927 */ 1928 _INLINE_ dgrp_t ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino) 1929 { 1930 return (ino - 1) / fs->super->s_inodes_per_group; 1931 } 1932 1933 /* 1934 * Return the first block (inclusive) in a group 1935 */ 1936 _INLINE_ blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group) 1937 { 1938 return (blk_t) ext2fs_group_first_block2(fs, group); 1939 } 1940 1941 /* 1942 * Return the last block (inclusive) in a group 1943 */ 1944 _INLINE_ blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group) 1945 { 1946 return (blk_t) ext2fs_group_last_block2(fs, group); 1947 } 1948 1949 _INLINE_ blk_t ext2fs_inode_data_blocks(ext2_filsys fs, 1950 struct ext2_inode *inode) 1951 { 1952 return (blk_t) ext2fs_inode_data_blocks2(fs, inode); 1953 } 1954 1955 /* 1956 * This is an efficient, overflow safe way of calculating ceil((1.0 * a) / b) 1957 */ 1958 _INLINE_ unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b) 1959 { 1960 if (!a) 1961 return 0; 1962 return ((a - 1) / b) + 1; 1963 } 1964 1965 _INLINE_ __u64 ext2fs_div64_ceil(__u64 a, __u64 b) 1966 { 1967 if (!a) 1968 return 0; 1969 return ((a - 1) / b) + 1; 1970 } 1971 1972 _INLINE_ int ext2fs_dirent_name_len(const struct ext2_dir_entry *entry) 1973 { 1974 return entry->name_len & 0xff; 1975 } 1976 1977 _INLINE_ void ext2fs_dirent_set_name_len(struct ext2_dir_entry *entry, int len) 1978 { 1979 entry->name_len = (entry->name_len & 0xff00) | (len & 0xff); 1980 } 1981 1982 _INLINE_ int ext2fs_dirent_file_type(const struct ext2_dir_entry *entry) 1983 { 1984 return entry->name_len >> 8; 1985 } 1986 1987 _INLINE_ void ext2fs_dirent_set_file_type(struct ext2_dir_entry *entry, int type) 1988 { 1989 entry->name_len = (entry->name_len & 0xff) | (type << 8); 1990 } 1991 1992 _INLINE_ struct ext2_inode *ext2fs_inode(struct ext2_inode_large * large_inode) 1993 { 1994 /* It is always safe to convert large inode to a small inode */ 1995 return (struct ext2_inode *) large_inode; 1996 } 1997 1998 _INLINE_ const struct ext2_inode * 1999 ext2fs_const_inode(const struct ext2_inode_large * large_inode) 2000 { 2001 /* It is always safe to convert large inode to a small inode */ 2002 return (const struct ext2_inode *) large_inode; 2003 } 2004 2005 #undef _INLINE_ 2006 #endif 2007 2008 #ifdef __cplusplus 2009 } 2010 #endif 2011 2012 #endif /* _EXT2FS_EXT2FS_H */ 2013
