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