1 /* 2 * ext2fs.h --- ext2fs 3 * 4 * Copyright (C) 1993, 1994, 1995, 1996 Theodore Ts'o. 5 * 6 * %Begin-Header% 7 * This file may be redistributed under the terms of the GNU Library 8 * General Public License, version 2. 9 * %End-Header% 10 */ 11 12 #ifndef _EXT2FS_EXT2FS_H 13 #define _EXT2FS_EXT2FS_H 14 15 #ifdef __GNUC__ 16 #define EXT2FS_ATTR(x) __attribute__(x) 17 #else 18 #define EXT2FS_ATTR(x) 19 #endif 20 21 #ifdef __cplusplus 22 extern "C" { 23 #endif 24 25 /* 26 * Non-GNU C compilers won't necessarily understand inline 27 */ 28 #if (!defined(__GNUC__) && !defined(__WATCOMC__)) 29 #define NO_INLINE_FUNCS 30 #endif 31 32 /* 33 * Where the master copy of the superblock is located, and how big 34 * superblocks are supposed to be. We define SUPERBLOCK_SIZE because 35 * the size of the superblock structure is not necessarily trustworthy 36 * (some versions have the padding set up so that the superblock is 37 * 1032 bytes long). 38 */ 39 #define SUPERBLOCK_OFFSET 1024 40 #define SUPERBLOCK_SIZE 1024 41 42 /* 43 * The last ext2fs revision level that this version of the library is 44 * able to support. 45 */ 46 #define EXT2_LIB_CURRENT_REV EXT2_DYNAMIC_REV 47 48 #ifdef HAVE_SYS_TYPES_H 49 #include <sys/types.h> 50 #endif 51 52 #include <stdio.h> 53 #include <stdlib.h> 54 #include <string.h> 55 #include <errno.h> 56 57 #if EXT2_FLAT_INCLUDES 58 #include "e2_types.h" 59 #include "ext2_fs.h" 60 #include "ext3_extents.h" 61 #else 62 #include <ext2fs/ext2_types.h> 63 #include <ext2fs/ext2_fs.h> 64 #include <ext2fs/ext3_extents.h> 65 #endif /* EXT2_FLAT_INCLUDES */ 66 67 #ifdef __CHECK_ENDIAN__ 68 #define __bitwise __attribute__((bitwise)) 69 #else 70 #define __bitwise 71 #endif 72 73 typedef __u32 __bitwise ext2_ino_t; 74 typedef __u32 __bitwise blk_t; 75 typedef __u64 __bitwise blk64_t; 76 typedef __u32 __bitwise dgrp_t; 77 typedef __u32 __bitwise ext2_off_t; 78 typedef __u64 __bitwise ext2_off64_t; 79 typedef __s64 __bitwise e2_blkcnt_t; 80 typedef __u32 __bitwise ext2_dirhash_t; 81 82 #if EXT2_FLAT_INCLUDES 83 #include "com_err.h" 84 #include "ext2_io.h" 85 #include "ext2_err.h" 86 #include "ext2_ext_attr.h" 87 #else 88 #include <et/com_err.h> 89 #include <ext2fs/ext2_io.h> 90 #include <ext2fs/ext2_err.h> 91 #include <ext2fs/ext2_ext_attr.h> 92 #endif 93 94 /* 95 * Portability help for Microsoft Visual C++ 96 */ 97 #ifdef _MSC_VER 98 #define EXT2_QSORT_TYPE int __cdecl 99 #else 100 #define EXT2_QSORT_TYPE int 101 #endif 102 103 typedef struct struct_ext2_filsys *ext2_filsys; 104 105 #define EXT2FS_MARK_ERROR 0 106 #define EXT2FS_UNMARK_ERROR 1 107 #define EXT2FS_TEST_ERROR 2 108 109 typedef struct ext2fs_struct_generic_bitmap *ext2fs_generic_bitmap; 110 typedef struct ext2fs_struct_generic_bitmap *ext2fs_inode_bitmap; 111 typedef struct ext2fs_struct_generic_bitmap *ext2fs_block_bitmap; 112 113 #define EXT2_FIRST_INODE(s) EXT2_FIRST_INO(s) 114 115 116 /* 117 * Badblocks list definitions 118 */ 119 120 typedef struct ext2_struct_u32_list *ext2_badblocks_list; 121 typedef struct ext2_struct_u32_iterate *ext2_badblocks_iterate; 122 123 typedef struct ext2_struct_u32_list *ext2_u32_list; 124 typedef struct ext2_struct_u32_iterate *ext2_u32_iterate; 125 126 /* old */ 127 typedef struct ext2_struct_u32_list *badblocks_list; 128 typedef struct ext2_struct_u32_iterate *badblocks_iterate; 129 130 #define BADBLOCKS_FLAG_DIRTY 1 131 132 /* 133 * ext2_dblist structure and abstractions (see dblist.c) 134 */ 135 struct ext2_db_entry2 { 136 ext2_ino_t ino; 137 blk64_t blk; 138 e2_blkcnt_t blockcnt; 139 }; 140 141 /* Ye Olde 32-bit version */ 142 struct ext2_db_entry { 143 ext2_ino_t ino; 144 blk_t blk; 145 int blockcnt; 146 }; 147 148 typedef struct ext2_struct_dblist *ext2_dblist; 149 150 #define DBLIST_ABORT 1 151 152 /* 153 * ext2_fileio definitions 154 */ 155 156 #define EXT2_FILE_WRITE 0x0001 157 #define EXT2_FILE_CREATE 0x0002 158 159 #define EXT2_FILE_MASK 0x00FF 160 161 #define EXT2_FILE_BUF_DIRTY 0x4000 162 #define EXT2_FILE_BUF_VALID 0x2000 163 164 typedef struct ext2_file *ext2_file_t; 165 166 #define EXT2_SEEK_SET 0 167 #define EXT2_SEEK_CUR 1 168 #define EXT2_SEEK_END 2 169 170 /* 171 * Flags for the ext2_filsys structure and for ext2fs_open() 172 */ 173 #define EXT2_FLAG_RW 0x01 174 #define EXT2_FLAG_CHANGED 0x02 175 #define EXT2_FLAG_DIRTY 0x04 176 #define EXT2_FLAG_VALID 0x08 177 #define EXT2_FLAG_IB_DIRTY 0x10 178 #define EXT2_FLAG_BB_DIRTY 0x20 179 #define EXT2_FLAG_SWAP_BYTES 0x40 180 #define EXT2_FLAG_SWAP_BYTES_READ 0x80 181 #define EXT2_FLAG_SWAP_BYTES_WRITE 0x100 182 #define EXT2_FLAG_MASTER_SB_ONLY 0x200 183 #define EXT2_FLAG_FORCE 0x400 184 #define EXT2_FLAG_SUPER_ONLY 0x800 185 #define EXT2_FLAG_JOURNAL_DEV_OK 0x1000 186 #define EXT2_FLAG_IMAGE_FILE 0x2000 187 #define EXT2_FLAG_EXCLUSIVE 0x4000 188 #define EXT2_FLAG_SOFTSUPP_FEATURES 0x8000 189 #define EXT2_FLAG_NOFREE_ON_ERROR 0x10000 190 #define EXT2_FLAG_64BITS 0x20000 191 #define EXT2_FLAG_PRINT_PROGRESS 0x40000 192 #define EXT2_FLAG_DIRECT_IO 0x80000 193 #define EXT2_FLAG_SKIP_MMP 0x100000 194 195 /* 196 * Special flag in the ext2 inode i_flag field that means that this is 197 * a new inode. (So that ext2_write_inode() can clear extra fields.) 198 */ 199 #define EXT2_NEW_INODE_FL 0x80000000 200 201 /* 202 * Flags for mkjournal 203 */ 204 #define EXT2_MKJOURNAL_V1_SUPER 0x0000001 /* create V1 superblock (deprecated) */ 205 #define EXT2_MKJOURNAL_LAZYINIT 0x0000002 /* don't zero journal inode before use*/ 206 #define EXT2_MKJOURNAL_NO_MNT_CHECK 0x0000004 /* don't check mount status */ 207 208 struct opaque_ext2_group_desc; 209 210 struct struct_ext2_filsys { 211 errcode_t magic; 212 io_channel io; 213 int flags; 214 char * device_name; 215 struct ext2_super_block * super; 216 unsigned int blocksize; 217 int fragsize; 218 dgrp_t group_desc_count; 219 unsigned long desc_blocks; 220 struct opaque_ext2_group_desc * group_desc; 221 unsigned int inode_blocks_per_group; 222 ext2fs_inode_bitmap inode_map; 223 ext2fs_block_bitmap block_map; 224 /* XXX FIXME-64: not 64-bit safe, but not used? */ 225 errcode_t (*get_blocks)(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); 226 errcode_t (*check_directory)(ext2_filsys fs, ext2_ino_t ino); 227 errcode_t (*write_bitmaps)(ext2_filsys fs); 228 errcode_t (*read_inode)(ext2_filsys fs, ext2_ino_t ino, 229 struct ext2_inode *inode); 230 errcode_t (*write_inode)(ext2_filsys fs, ext2_ino_t ino, 231 struct ext2_inode *inode); 232 ext2_badblocks_list badblocks; 233 ext2_dblist dblist; 234 __u32 stride; /* for mke2fs */ 235 struct ext2_super_block * orig_super; 236 struct ext2_image_hdr * image_header; 237 __u32 umask; 238 time_t now; 239 int cluster_ratio_bits; 240 __u16 default_bitmap_type; 241 __u16 pad; 242 /* 243 * Reserved for future expansion 244 */ 245 __u32 reserved[5]; 246 247 /* 248 * Reserved for the use of the calling application. 249 */ 250 void * priv_data; 251 252 /* 253 * Inode cache 254 */ 255 struct ext2_inode_cache *icache; 256 io_channel image_io; 257 258 /* 259 * More callback functions 260 */ 261 errcode_t (*get_alloc_block)(ext2_filsys fs, blk64_t goal, 262 blk64_t *ret); 263 void (*block_alloc_stats)(ext2_filsys fs, blk64_t blk, int inuse); 264 265 /* 266 * Buffers for Multiple mount protection(MMP) block. 267 */ 268 void *mmp_buf; 269 void *mmp_cmp; 270 int mmp_fd; 271 272 /* 273 * Time at which e2fsck last updated the MMP block. 274 */ 275 long mmp_last_written; 276 }; 277 278 #if EXT2_FLAT_INCLUDES 279 #include "e2_bitops.h" 280 #else 281 #include <ext2fs/bitops.h> 282 #endif 283 284 /* 285 * 64-bit bitmap backend types 286 */ 287 #define EXT2FS_BMAP64_BITARRAY 1 288 #define EXT2FS_BMAP64_RBTREE 2 289 #define EXT2FS_BMAP64_AUTODIR 3 290 291 /* 292 * Return flags for the block iterator functions 293 */ 294 #define BLOCK_CHANGED 1 295 #define BLOCK_ABORT 2 296 #define BLOCK_ERROR 4 297 298 /* 299 * Block interate flags 300 * 301 * BLOCK_FLAG_APPEND, or BLOCK_FLAG_HOLE, indicates that the interator 302 * function should be called on blocks where the block number is zero. 303 * This is used by ext2fs_expand_dir() to be able to add a new block 304 * to an inode. It can also be used for programs that want to be able 305 * to deal with files that contain "holes". 306 * 307 * BLOCK_FLAG_DEPTH_TRAVERSE indicates that the iterator function for 308 * the indirect, doubly indirect, etc. blocks should be called after 309 * all of the blocks containined in the indirect blocks are processed. 310 * This is useful if you are going to be deallocating blocks from an 311 * inode. 312 * 313 * BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be 314 * called for data blocks only. 315 * 316 * BLOCK_FLAG_READ_ONLY is a promise by the caller that it will not 317 * modify returned block number. 318 * 319 * BLOCK_FLAG_NO_LARGE is for internal use only. It informs 320 * ext2fs_block_iterate2 that large files won't be accepted. 321 */ 322 #define BLOCK_FLAG_APPEND 1 323 #define BLOCK_FLAG_HOLE 1 324 #define BLOCK_FLAG_DEPTH_TRAVERSE 2 325 #define BLOCK_FLAG_DATA_ONLY 4 326 #define BLOCK_FLAG_READ_ONLY 8 327 328 #define BLOCK_FLAG_NO_LARGE 0x1000 329 330 /* 331 * Magic "block count" return values for the block iterator function. 332 */ 333 #define BLOCK_COUNT_IND (-1) 334 #define BLOCK_COUNT_DIND (-2) 335 #define BLOCK_COUNT_TIND (-3) 336 #define BLOCK_COUNT_TRANSLATOR (-4) 337 338 #if 0 339 /* 340 * Flags for ext2fs_move_blocks 341 */ 342 #define EXT2_BMOVE_GET_DBLIST 0x0001 343 #define EXT2_BMOVE_DEBUG 0x0002 344 #endif 345 346 /* 347 * Generic (non-filesystem layout specific) extents structure 348 */ 349 350 #define EXT2_EXTENT_FLAGS_LEAF 0x0001 351 #define EXT2_EXTENT_FLAGS_UNINIT 0x0002 352 #define EXT2_EXTENT_FLAGS_SECOND_VISIT 0x0004 353 354 struct ext2fs_extent { 355 blk64_t e_pblk; /* first physical block */ 356 blk64_t e_lblk; /* first logical block extent covers */ 357 __u32 e_len; /* number of blocks covered by extent */ 358 __u32 e_flags; /* extent flags */ 359 }; 360 361 typedef struct ext2_extent_handle *ext2_extent_handle_t; 362 typedef struct ext2_extent_path *ext2_extent_path_t; 363 364 /* 365 * Flags used by ext2fs_extent_get() 366 */ 367 #define EXT2_EXTENT_CURRENT 0x0000 368 #define EXT2_EXTENT_MOVE_MASK 0x000F 369 #define EXT2_EXTENT_ROOT 0x0001 370 #define EXT2_EXTENT_LAST_LEAF 0x0002 371 #define EXT2_EXTENT_FIRST_SIB 0x0003 372 #define EXT2_EXTENT_LAST_SIB 0x0004 373 #define EXT2_EXTENT_NEXT_SIB 0x0005 374 #define EXT2_EXTENT_PREV_SIB 0x0006 375 #define EXT2_EXTENT_NEXT_LEAF 0x0007 376 #define EXT2_EXTENT_PREV_LEAF 0x0008 377 #define EXT2_EXTENT_NEXT 0x0009 378 #define EXT2_EXTENT_PREV 0x000A 379 #define EXT2_EXTENT_UP 0x000B 380 #define EXT2_EXTENT_DOWN 0x000C 381 #define EXT2_EXTENT_DOWN_AND_LAST 0x000D 382 383 /* 384 * Flags used by ext2fs_extent_insert() 385 */ 386 #define EXT2_EXTENT_INSERT_AFTER 0x0001 /* insert after handle loc'n */ 387 #define EXT2_EXTENT_INSERT_NOSPLIT 0x0002 /* insert may not cause split */ 388 389 /* 390 * Flags used by ext2fs_extent_delete() 391 */ 392 #define EXT2_EXTENT_DELETE_KEEP_EMPTY 0x001 /* keep node if last extnt gone */ 393 394 /* 395 * Flags used by ext2fs_extent_set_bmap() 396 */ 397 #define EXT2_EXTENT_SET_BMAP_UNINIT 0x0001 398 399 /* 400 * Data structure returned by ext2fs_extent_get_info() 401 */ 402 struct ext2_extent_info { 403 int curr_entry; 404 int curr_level; 405 int num_entries; 406 int max_entries; 407 int max_depth; 408 int bytes_avail; 409 blk64_t max_lblk; 410 blk64_t max_pblk; 411 __u32 max_len; 412 __u32 max_uninit_len; 413 }; 414 415 /* 416 * Flags for directory block reading and writing functions 417 */ 418 #define EXT2_DIRBLOCK_V2_STRUCT 0x0001 419 420 /* 421 * Return flags for the directory iterator functions 422 */ 423 #define DIRENT_CHANGED 1 424 #define DIRENT_ABORT 2 425 #define DIRENT_ERROR 3 426 427 /* 428 * Directory iterator flags 429 */ 430 431 #define DIRENT_FLAG_INCLUDE_EMPTY 1 432 #define DIRENT_FLAG_INCLUDE_REMOVED 2 433 434 #define DIRENT_DOT_FILE 1 435 #define DIRENT_DOT_DOT_FILE 2 436 #define DIRENT_OTHER_FILE 3 437 #define DIRENT_DELETED_FILE 4 438 439 /* 440 * Inode scan definitions 441 */ 442 typedef struct ext2_struct_inode_scan *ext2_inode_scan; 443 444 /* 445 * ext2fs_scan flags 446 */ 447 #define EXT2_SF_CHK_BADBLOCKS 0x0001 448 #define EXT2_SF_BAD_INODE_BLK 0x0002 449 #define EXT2_SF_BAD_EXTRA_BYTES 0x0004 450 #define EXT2_SF_SKIP_MISSING_ITABLE 0x0008 451 #define EXT2_SF_DO_LAZY 0x0010 452 453 /* 454 * ext2fs_check_if_mounted flags 455 */ 456 #define EXT2_MF_MOUNTED 1 457 #define EXT2_MF_ISROOT 2 458 #define EXT2_MF_READONLY 4 459 #define EXT2_MF_SWAP 8 460 #define EXT2_MF_BUSY 16 461 462 /* 463 * Ext2/linux mode flags. We define them here so that we don't need 464 * to depend on the OS's sys/stat.h, since we may be compiling on a 465 * non-Linux system. 466 */ 467 #define LINUX_S_IFMT 00170000 468 #define LINUX_S_IFSOCK 0140000 469 #define LINUX_S_IFLNK 0120000 470 #define LINUX_S_IFREG 0100000 471 #define LINUX_S_IFBLK 0060000 472 #define LINUX_S_IFDIR 0040000 473 #define LINUX_S_IFCHR 0020000 474 #define LINUX_S_IFIFO 0010000 475 #define LINUX_S_ISUID 0004000 476 #define LINUX_S_ISGID 0002000 477 #define LINUX_S_ISVTX 0001000 478 479 #define LINUX_S_IRWXU 00700 480 #define LINUX_S_IRUSR 00400 481 #define LINUX_S_IWUSR 00200 482 #define LINUX_S_IXUSR 00100 483 484 #define LINUX_S_IRWXG 00070 485 #define LINUX_S_IRGRP 00040 486 #define LINUX_S_IWGRP 00020 487 #define LINUX_S_IXGRP 00010 488 489 #define LINUX_S_IRWXO 00007 490 #define LINUX_S_IROTH 00004 491 #define LINUX_S_IWOTH 00002 492 #define LINUX_S_IXOTH 00001 493 494 #define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK) 495 #define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG) 496 #define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR) 497 #define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR) 498 #define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK) 499 #define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO) 500 #define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK) 501 502 /* 503 * ext2 size of an inode 504 */ 505 #define EXT2_I_SIZE(i) ((i)->i_size | ((__u64) (i)->i_size_high << 32)) 506 507 /* 508 * ext2_icount_t abstraction 509 */ 510 #define EXT2_ICOUNT_OPT_INCREMENT 0x01 511 512 typedef struct ext2_icount *ext2_icount_t; 513 514 /* 515 * Flags for ext2fs_bmap 516 */ 517 #define BMAP_ALLOC 0x0001 518 #define BMAP_SET 0x0002 519 520 /* 521 * Returned flags from ext2fs_bmap 522 */ 523 #define BMAP_RET_UNINIT 0x0001 524 525 /* 526 * Flags for imager.c functions 527 */ 528 #define IMAGER_FLAG_INODEMAP 1 529 #define IMAGER_FLAG_SPARSEWRITE 2 530 531 /* 532 * For checking structure magic numbers... 533 */ 534 535 #define EXT2_CHECK_MAGIC(struct, code) \ 536 if ((struct)->magic != (code)) return (code) 537 538 539 #define EXT2FS_SHA256_LENGTH 32 540 #define EXT2FS_DIGEST_SIZE EXT2FS_SHA256_LENGTH 541 542 /* 543 * For ext2 compression support 544 */ 545 #define EXT2FS_COMPRESSED_BLKADDR ((blk_t) -1) 546 #define HOLE_BLKADDR(_b) ((_b) == 0 || (_b) == EXT2FS_COMPRESSED_BLKADDR) 547 548 /* 549 * Features supported by this version of the library 550 */ 551 #define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\ 552 EXT2_FEATURE_COMPAT_IMAGIC_INODES|\ 553 EXT3_FEATURE_COMPAT_HAS_JOURNAL|\ 554 EXT2_FEATURE_COMPAT_RESIZE_INODE|\ 555 EXT2_FEATURE_COMPAT_DIR_INDEX|\ 556 EXT2_FEATURE_COMPAT_EXT_ATTR) 557 558 /* This #ifdef is temporary until compression is fully supported */ 559 #ifdef ENABLE_COMPRESSION 560 #ifndef I_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL 561 /* If the below warning bugs you, then have 562 `CPPFLAGS=-DI_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL' in your 563 environment at configure time. */ 564 #warning "Compression support is experimental" 565 #endif 566 #define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 567 EXT2_FEATURE_INCOMPAT_COMPRESSION|\ 568 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 569 EXT2_FEATURE_INCOMPAT_META_BG|\ 570 EXT3_FEATURE_INCOMPAT_RECOVER|\ 571 EXT3_FEATURE_INCOMPAT_EXTENTS|\ 572 EXT4_FEATURE_INCOMPAT_FLEX_BG|\ 573 EXT4_FEATURE_INCOMPAT_MMP|\ 574 EXT4_FEATURE_INCOMPAT_64BIT|\ 575 EXT4_FEATURE_INCOMPAT_ENCRYPT) 576 #else 577 #define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 578 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 579 EXT2_FEATURE_INCOMPAT_META_BG|\ 580 EXT3_FEATURE_INCOMPAT_RECOVER|\ 581 EXT3_FEATURE_INCOMPAT_EXTENTS|\ 582 EXT4_FEATURE_INCOMPAT_FLEX_BG|\ 583 EXT4_FEATURE_INCOMPAT_MMP|\ 584 EXT4_FEATURE_INCOMPAT_64BIT|\ 585 EXT4_FEATURE_INCOMPAT_ENCRYPT) 586 #endif 587 #ifdef CONFIG_QUOTA 588 #define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\ 589 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|\ 590 EXT2_FEATURE_RO_COMPAT_LARGE_FILE|\ 591 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|\ 592 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|\ 593 EXT4_FEATURE_RO_COMPAT_GDT_CSUM|\ 594 EXT4_FEATURE_RO_COMPAT_BIGALLOC|\ 595 EXT4_FEATURE_RO_COMPAT_QUOTA) 596 #else 597 #define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\ 598 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|\ 599 EXT2_FEATURE_RO_COMPAT_LARGE_FILE|\ 600 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|\ 601 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|\ 602 EXT4_FEATURE_RO_COMPAT_GDT_CSUM|\ 603 EXT4_FEATURE_RO_COMPAT_BIGALLOC) 604 #endif 605 606 /* 607 * These features are only allowed if EXT2_FLAG_SOFTSUPP_FEATURES is passed 608 * to ext2fs_openfs() 609 */ 610 #define EXT2_LIB_SOFTSUPP_INCOMPAT (0) 611 #define EXT2_LIB_SOFTSUPP_RO_COMPAT (EXT4_FEATURE_RO_COMPAT_REPLICA) 612 613 614 /* Translate a block number to a cluster number */ 615 #define EXT2FS_CLUSTER_RATIO(fs) (1 << (fs)->cluster_ratio_bits) 616 #define EXT2FS_CLUSTER_MASK(fs) (EXT2FS_CLUSTER_RATIO(fs) - 1) 617 #define EXT2FS_B2C(fs, blk) ((blk) >> (fs)->cluster_ratio_bits) 618 /* Translate a cluster number to a block number */ 619 #define EXT2FS_C2B(fs, cluster) ((cluster) << (fs)->cluster_ratio_bits) 620 /* Translate # of blks to # of clusters */ 621 #define EXT2FS_NUM_B2C(fs, blks) (((blks) + EXT2FS_CLUSTER_MASK(fs)) >> \ 622 (fs)->cluster_ratio_bits) 623 624 #if defined(HAVE_FSTAT64) && !defined(__OSX_AVAILABLE_BUT_DEPRECATED) 625 typedef struct stat64 ext2fs_struct_stat; 626 #else 627 typedef struct stat ext2fs_struct_stat; 628 #endif 629 630 /* 631 * For ext2fs_close2() and ext2fs_flush2(), this flag allows you to 632 * avoid the fsync call. 633 */ 634 #define EXT2_FLAG_FLUSH_NO_SYNC 1 635 636 /* 637 * function prototypes 638 */ 639 640 /* The LARGE_FILE feature should be set if we have stored files 2GB+ in size */ 641 static inline int ext2fs_needs_large_file_feature(unsigned long long file_size) 642 { 643 return file_size >= 0x80000000ULL; 644 } 645 646 /* alloc.c */ 647 extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode, 648 ext2fs_inode_bitmap map, ext2_ino_t *ret); 649 extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal, 650 ext2fs_block_bitmap map, blk_t *ret); 651 extern errcode_t ext2fs_new_block2(ext2_filsys fs, blk64_t goal, 652 ext2fs_block_bitmap map, blk64_t *ret); 653 extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start, 654 blk_t finish, int num, 655 ext2fs_block_bitmap map, 656 blk_t *ret); 657 extern errcode_t ext2fs_get_free_blocks2(ext2_filsys fs, blk64_t start, 658 blk64_t finish, int num, 659 ext2fs_block_bitmap map, 660 blk64_t *ret); 661 extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal, 662 char *block_buf, blk_t *ret); 663 extern errcode_t ext2fs_alloc_block2(ext2_filsys fs, blk64_t goal, 664 char *block_buf, blk64_t *ret); 665 extern void ext2fs_set_alloc_block_callback(ext2_filsys fs, 666 errcode_t (*func)(ext2_filsys fs, 667 blk64_t goal, 668 blk64_t *ret), 669 errcode_t (**old)(ext2_filsys fs, 670 blk64_t goal, 671 blk64_t *ret)); 672 673 /* alloc_sb.c */ 674 extern int ext2fs_reserve_super_and_bgd(ext2_filsys fs, 675 dgrp_t group, 676 ext2fs_block_bitmap bmap); 677 extern void ext2fs_set_block_alloc_stats_callback(ext2_filsys fs, 678 void (*func)(ext2_filsys fs, 679 blk64_t blk, 680 int inuse), 681 void (**old)(ext2_filsys fs, 682 blk64_t blk, 683 int inuse)); 684 685 /* alloc_stats.c */ 686 void ext2fs_inode_alloc_stats(ext2_filsys fs, ext2_ino_t ino, int inuse); 687 void ext2fs_inode_alloc_stats2(ext2_filsys fs, ext2_ino_t ino, 688 int inuse, int isdir); 689 void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse); 690 void ext2fs_block_alloc_stats2(ext2_filsys fs, blk64_t blk, int inuse); 691 692 /* alloc_tables.c */ 693 extern errcode_t ext2fs_allocate_tables(ext2_filsys fs); 694 extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group, 695 ext2fs_block_bitmap bmap); 696 697 /* badblocks.c */ 698 extern errcode_t ext2fs_u32_list_create(ext2_u32_list *ret, int size); 699 extern errcode_t ext2fs_u32_list_add(ext2_u32_list bb, __u32 blk); 700 extern int ext2fs_u32_list_find(ext2_u32_list bb, __u32 blk); 701 extern int ext2fs_u32_list_test(ext2_u32_list bb, blk_t blk); 702 extern errcode_t ext2fs_u32_list_iterate_begin(ext2_u32_list bb, 703 ext2_u32_iterate *ret); 704 extern int ext2fs_u32_list_iterate(ext2_u32_iterate iter, blk_t *blk); 705 extern void ext2fs_u32_list_iterate_end(ext2_u32_iterate iter); 706 extern errcode_t ext2fs_u32_copy(ext2_u32_list src, ext2_u32_list *dest); 707 extern int ext2fs_u32_list_equal(ext2_u32_list bb1, ext2_u32_list bb2); 708 709 extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret, 710 int size); 711 extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb, 712 blk_t blk); 713 extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb, 714 blk_t blk); 715 extern int ext2fs_u32_list_del(ext2_u32_list bb, __u32 blk); 716 extern void ext2fs_badblocks_list_del(ext2_u32_list bb, __u32 blk); 717 extern errcode_t 718 ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb, 719 ext2_badblocks_iterate *ret); 720 extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter, 721 blk_t *blk); 722 extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter); 723 extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src, 724 ext2_badblocks_list *dest); 725 extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1, 726 ext2_badblocks_list bb2); 727 extern int ext2fs_u32_list_count(ext2_u32_list bb); 728 729 /* bb_compat */ 730 extern errcode_t badblocks_list_create(badblocks_list *ret, int size); 731 extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk); 732 extern int badblocks_list_test(badblocks_list bb, blk_t blk); 733 extern errcode_t badblocks_list_iterate_begin(badblocks_list bb, 734 badblocks_iterate *ret); 735 extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk); 736 extern void badblocks_list_iterate_end(badblocks_iterate iter); 737 extern void badblocks_list_free(badblocks_list bb); 738 739 /* bb_inode.c */ 740 extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs, 741 ext2_badblocks_list bb_list); 742 743 /* bitmaps.c */ 744 extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap); 745 extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap); 746 extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src, 747 ext2fs_generic_bitmap *dest); 748 extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs); 749 extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs); 750 extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs); 751 extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs); 752 extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs, 753 const char *descr, 754 ext2fs_block_bitmap *ret); 755 extern errcode_t ext2fs_allocate_subcluster_bitmap(ext2_filsys fs, 756 const char *descr, 757 ext2fs_block_bitmap *ret); 758 extern int ext2fs_get_bitmap_granularity(ext2fs_block_bitmap bitmap); 759 extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs, 760 const char *descr, 761 ext2fs_inode_bitmap *ret); 762 extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap, 763 ext2_ino_t end, ext2_ino_t *oend); 764 extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap, 765 blk_t end, blk_t *oend); 766 extern errcode_t ext2fs_fudge_block_bitmap_end2(ext2fs_block_bitmap bitmap, 767 blk64_t end, blk64_t *oend); 768 extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap); 769 extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap); 770 extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs); 771 extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs); 772 extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end, 773 ext2fs_inode_bitmap bmap); 774 extern errcode_t ext2fs_resize_inode_bitmap2(__u64 new_end, 775 __u64 new_real_end, 776 ext2fs_inode_bitmap bmap); 777 extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end, 778 ext2fs_block_bitmap bmap); 779 extern errcode_t ext2fs_resize_block_bitmap2(__u64 new_end, 780 __u64 new_real_end, 781 ext2fs_block_bitmap bmap); 782 extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1, 783 ext2fs_block_bitmap bm2); 784 extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1, 785 ext2fs_inode_bitmap bm2); 786 extern errcode_t ext2fs_set_inode_bitmap_range(ext2fs_inode_bitmap bmap, 787 ext2_ino_t start, unsigned int num, 788 void *in); 789 extern errcode_t ext2fs_set_inode_bitmap_range2(ext2fs_inode_bitmap bmap, 790 __u64 start, size_t num, 791 void *in); 792 extern errcode_t ext2fs_get_inode_bitmap_range(ext2fs_inode_bitmap bmap, 793 ext2_ino_t start, unsigned int num, 794 void *out); 795 extern errcode_t ext2fs_get_inode_bitmap_range2(ext2fs_inode_bitmap bmap, 796 __u64 start, size_t num, 797 void *out); 798 extern errcode_t ext2fs_set_block_bitmap_range(ext2fs_block_bitmap bmap, 799 blk_t start, unsigned int num, 800 void *in); 801 extern errcode_t ext2fs_set_block_bitmap_range2(ext2fs_block_bitmap bmap, 802 blk64_t start, size_t num, 803 void *in); 804 extern errcode_t ext2fs_get_block_bitmap_range(ext2fs_block_bitmap bmap, 805 blk_t start, unsigned int num, 806 void *out); 807 extern errcode_t ext2fs_get_block_bitmap_range2(ext2fs_block_bitmap bmap, 808 blk64_t start, size_t num, 809 void *out); 810 811 /* blknum.c */ 812 extern dgrp_t ext2fs_group_of_blk2(ext2_filsys fs, blk64_t); 813 extern blk64_t ext2fs_group_first_block2(ext2_filsys fs, dgrp_t group); 814 extern blk64_t ext2fs_group_last_block2(ext2_filsys fs, dgrp_t group); 815 extern int ext2fs_group_blocks_count(ext2_filsys fs, dgrp_t group); 816 extern blk64_t ext2fs_inode_data_blocks2(ext2_filsys fs, 817 struct ext2_inode *inode); 818 extern blk64_t ext2fs_inode_i_blocks(ext2_filsys fs, 819 struct ext2_inode *inode); 820 extern blk64_t ext2fs_blocks_count(struct ext2_super_block *super); 821 extern void ext2fs_blocks_count_set(struct ext2_super_block *super, 822 blk64_t blk); 823 extern void ext2fs_blocks_count_add(struct ext2_super_block *super, 824 blk64_t blk); 825 extern blk64_t ext2fs_r_blocks_count(struct ext2_super_block *super); 826 extern void ext2fs_r_blocks_count_set(struct ext2_super_block *super, 827 blk64_t blk); 828 extern void ext2fs_r_blocks_count_add(struct ext2_super_block *super, 829 blk64_t blk); 830 extern blk64_t ext2fs_free_blocks_count(struct ext2_super_block *super); 831 extern void ext2fs_free_blocks_count_set(struct ext2_super_block *super, 832 blk64_t blk); 833 extern void ext2fs_free_blocks_count_add(struct ext2_super_block *super, 834 blk64_t blk); 835 /* Block group descriptor accessor functions */ 836 extern struct ext2_group_desc *ext2fs_group_desc(ext2_filsys fs, 837 struct opaque_ext2_group_desc *gdp, 838 dgrp_t group); 839 extern blk64_t ext2fs_block_bitmap_loc(ext2_filsys fs, dgrp_t group); 840 extern void ext2fs_block_bitmap_loc_set(ext2_filsys fs, dgrp_t group, 841 blk64_t blk); 842 extern blk64_t ext2fs_inode_bitmap_loc(ext2_filsys fs, dgrp_t group); 843 extern void ext2fs_inode_bitmap_loc_set(ext2_filsys fs, dgrp_t group, 844 blk64_t blk); 845 extern blk64_t ext2fs_inode_table_loc(ext2_filsys fs, dgrp_t group); 846 extern void ext2fs_inode_table_loc_set(ext2_filsys fs, dgrp_t group, 847 blk64_t blk); 848 extern __u32 ext2fs_bg_free_blocks_count(ext2_filsys fs, dgrp_t group); 849 extern void ext2fs_bg_free_blocks_count_set(ext2_filsys fs, dgrp_t group, 850 __u32 n); 851 extern __u32 ext2fs_bg_free_inodes_count(ext2_filsys fs, dgrp_t group); 852 extern void ext2fs_bg_free_inodes_count_set(ext2_filsys fs, dgrp_t group, 853 __u32 n); 854 extern __u32 ext2fs_bg_used_dirs_count(ext2_filsys fs, dgrp_t group); 855 extern void ext2fs_bg_used_dirs_count_set(ext2_filsys fs, dgrp_t group, 856 __u32 n); 857 extern __u32 ext2fs_bg_itable_unused(ext2_filsys fs, dgrp_t group); 858 extern void ext2fs_bg_itable_unused_set(ext2_filsys fs, dgrp_t group, 859 __u32 n); 860 extern __u16 ext2fs_bg_flags(ext2_filsys fs, dgrp_t group); 861 extern void ext2fs_bg_flags_zap(ext2_filsys fs, dgrp_t group); 862 extern int ext2fs_bg_flags_test(ext2_filsys fs, dgrp_t group, __u16 bg_flag); 863 extern void ext2fs_bg_flags_set(ext2_filsys fs, dgrp_t group, __u16 bg_flags); 864 extern void ext2fs_bg_flags_clear(ext2_filsys fs, dgrp_t group, __u16 bg_flags); 865 extern __u16 ext2fs_bg_checksum(ext2_filsys fs, dgrp_t group); 866 extern void ext2fs_bg_checksum_set(ext2_filsys fs, dgrp_t group, __u16 checksum); 867 extern blk64_t ext2fs_file_acl_block(ext2_filsys fs, 868 const struct ext2_inode *inode); 869 extern void ext2fs_file_acl_block_set(ext2_filsys fs, 870 struct ext2_inode *inode, blk64_t blk); 871 872 /* block.c */ 873 extern errcode_t ext2fs_block_iterate(ext2_filsys fs, 874 ext2_ino_t ino, 875 int flags, 876 char *block_buf, 877 int (*func)(ext2_filsys fs, 878 blk_t *blocknr, 879 int blockcnt, 880 void *priv_data), 881 void *priv_data); 882 errcode_t ext2fs_block_iterate2(ext2_filsys fs, 883 ext2_ino_t ino, 884 int flags, 885 char *block_buf, 886 int (*func)(ext2_filsys fs, 887 blk_t *blocknr, 888 e2_blkcnt_t blockcnt, 889 blk_t ref_blk, 890 int ref_offset, 891 void *priv_data), 892 void *priv_data); 893 errcode_t ext2fs_block_iterate3(ext2_filsys fs, 894 ext2_ino_t ino, 895 int flags, 896 char *block_buf, 897 int (*func)(ext2_filsys fs, 898 blk64_t *blocknr, 899 e2_blkcnt_t blockcnt, 900 blk64_t ref_blk, 901 int ref_offset, 902 void *priv_data), 903 void *priv_data); 904 905 /* bmap.c */ 906 extern errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino, 907 struct ext2_inode *inode, 908 char *block_buf, int bmap_flags, 909 blk_t block, blk_t *phys_blk); 910 extern errcode_t ext2fs_bmap2(ext2_filsys fs, ext2_ino_t ino, 911 struct ext2_inode *inode, 912 char *block_buf, int bmap_flags, blk64_t block, 913 int *ret_flags, blk64_t *phys_blk); 914 errcode_t ext2fs_map_cluster_block(ext2_filsys fs, ext2_ino_t ino, 915 struct ext2_inode *inode, blk64_t lblk, 916 blk64_t *pblk); 917 918 #if 0 919 /* bmove.c */ 920 extern errcode_t ext2fs_move_blocks(ext2_filsys fs, 921 ext2fs_block_bitmap reserve, 922 ext2fs_block_bitmap alloc_map, 923 int flags); 924 #endif 925 926 /* check_desc.c */ 927 extern errcode_t ext2fs_check_desc(ext2_filsys fs); 928 929 /* closefs.c */ 930 extern errcode_t ext2fs_close(ext2_filsys fs); 931 extern errcode_t ext2fs_close2(ext2_filsys fs, int flags); 932 extern errcode_t ext2fs_flush(ext2_filsys fs); 933 extern errcode_t ext2fs_flush2(ext2_filsys fs, int flags); 934 extern int ext2fs_bg_has_super(ext2_filsys fs, dgrp_t group_block); 935 extern errcode_t ext2fs_super_and_bgd_loc2(ext2_filsys fs, 936 dgrp_t group, 937 blk64_t *ret_super_blk, 938 blk64_t *ret_old_desc_blk, 939 blk64_t *ret_new_desc_blk, 940 blk_t *ret_used_blks); 941 extern int ext2fs_super_and_bgd_loc(ext2_filsys fs, 942 dgrp_t group, 943 blk_t *ret_super_blk, 944 blk_t *ret_old_desc_blk, 945 blk_t *ret_new_desc_blk, 946 int *ret_meta_bg); 947 extern void ext2fs_update_dynamic_rev(ext2_filsys fs); 948 949 /* crc32c.c */ 950 extern __u32 ext2fs_crc32c_be(__u32 crc, unsigned char const *p, size_t len); 951 extern __u32 ext2fs_crc32c_le(__u32 crc, unsigned char const *p, size_t len); 952 953 /* csum.c */ 954 extern void ext2fs_group_desc_csum_set(ext2_filsys fs, dgrp_t group); 955 extern int ext2fs_group_desc_csum_verify(ext2_filsys fs, dgrp_t group); 956 extern errcode_t ext2fs_set_gdt_csum(ext2_filsys fs); 957 extern __u16 ext2fs_group_desc_csum(ext2_filsys fs, dgrp_t group); 958 959 /* dblist.c */ 960 961 extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs); 962 extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist); 963 extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ext2_ino_t ino, 964 blk_t blk, int blockcnt); 965 extern errcode_t ext2fs_add_dir_block2(ext2_dblist dblist, ext2_ino_t ino, 966 blk64_t blk, e2_blkcnt_t blockcnt); 967 extern void ext2fs_dblist_sort(ext2_dblist dblist, 968 EXT2_QSORT_TYPE (*sortfunc)(const void *, 969 const void *)); 970 extern void ext2fs_dblist_sort2(ext2_dblist dblist, 971 EXT2_QSORT_TYPE (*sortfunc)(const void *, 972 const void *)); 973 extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist, 974 int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info, 975 void *priv_data), 976 void *priv_data); 977 extern errcode_t ext2fs_dblist_iterate2(ext2_dblist dblist, 978 int (*func)(ext2_filsys fs, struct ext2_db_entry2 *db_info, 979 void *priv_data), 980 void *priv_data); 981 extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ext2_ino_t ino, 982 blk_t blk, int blockcnt); 983 extern errcode_t ext2fs_set_dir_block2(ext2_dblist dblist, ext2_ino_t ino, 984 blk64_t blk, e2_blkcnt_t blockcnt); 985 extern errcode_t ext2fs_copy_dblist(ext2_dblist src, 986 ext2_dblist *dest); 987 extern int ext2fs_dblist_count(ext2_dblist dblist); 988 extern blk64_t ext2fs_dblist_count2(ext2_dblist dblist); 989 extern errcode_t ext2fs_dblist_get_last(ext2_dblist dblist, 990 struct ext2_db_entry **entry); 991 extern errcode_t ext2fs_dblist_get_last2(ext2_dblist dblist, 992 struct ext2_db_entry2 **entry); 993 extern errcode_t ext2fs_dblist_drop_last(ext2_dblist dblist); 994 995 /* dblist_dir.c */ 996 extern errcode_t 997 ext2fs_dblist_dir_iterate(ext2_dblist dblist, 998 int flags, 999 char *block_buf, 1000 int (*func)(ext2_ino_t dir, 1001 int entry, 1002 struct ext2_dir_entry *dirent, 1003 int offset, 1004 int blocksize, 1005 char *buf, 1006 void *priv_data), 1007 void *priv_data); 1008 1009 /* dirblock.c */ 1010 extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block, 1011 void *buf); 1012 extern errcode_t ext2fs_read_dir_block2(ext2_filsys fs, blk_t block, 1013 void *buf, int flags); 1014 extern errcode_t ext2fs_read_dir_block3(ext2_filsys fs, blk64_t block, 1015 void *buf, int flags); 1016 extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block, 1017 void *buf); 1018 extern errcode_t ext2fs_write_dir_block2(ext2_filsys fs, blk_t block, 1019 void *buf, int flags); 1020 extern errcode_t ext2fs_write_dir_block3(ext2_filsys fs, blk64_t block, 1021 void *buf, int flags); 1022 1023 /* dirhash.c */ 1024 extern errcode_t ext2fs_dirhash(int version, const char *name, int len, 1025 const __u32 *seed, 1026 ext2_dirhash_t *ret_hash, 1027 ext2_dirhash_t *ret_minor_hash); 1028 1029 1030 /* dir_iterate.c */ 1031 extern errcode_t ext2fs_get_rec_len(ext2_filsys fs, 1032 struct ext2_dir_entry *dirent, 1033 unsigned int *rec_len); 1034 extern errcode_t ext2fs_set_rec_len(ext2_filsys fs, 1035 unsigned int len, 1036 struct ext2_dir_entry *dirent); 1037 extern errcode_t ext2fs_dir_iterate(ext2_filsys fs, 1038 ext2_ino_t dir, 1039 int flags, 1040 char *block_buf, 1041 int (*func)(struct ext2_dir_entry *dirent, 1042 int offset, 1043 int blocksize, 1044 char *buf, 1045 void *priv_data), 1046 void *priv_data); 1047 extern errcode_t ext2fs_dir_iterate2(ext2_filsys fs, 1048 ext2_ino_t dir, 1049 int flags, 1050 char *block_buf, 1051 int (*func)(ext2_ino_t dir, 1052 int entry, 1053 struct ext2_dir_entry *dirent, 1054 int offset, 1055 int blocksize, 1056 char *buf, 1057 void *priv_data), 1058 void *priv_data); 1059 1060 /* dupfs.c */ 1061 extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest); 1062 1063 /* expanddir.c */ 1064 extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir); 1065 1066 /* ext_attr.c */ 1067 extern __u32 ext2fs_ext_attr_hash_entry(struct ext2_ext_attr_entry *entry, 1068 void *data); 1069 extern errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf); 1070 extern errcode_t ext2fs_read_ext_attr2(ext2_filsys fs, blk64_t block, 1071 void *buf); 1072 extern errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block, 1073 void *buf); 1074 extern errcode_t ext2fs_write_ext_attr2(ext2_filsys fs, blk64_t block, 1075 void *buf); 1076 extern errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk, 1077 char *block_buf, 1078 int adjust, __u32 *newcount); 1079 extern errcode_t ext2fs_adjust_ea_refcount2(ext2_filsys fs, blk64_t blk, 1080 char *block_buf, 1081 int adjust, __u32 *newcount); 1082 1083 /* extent.c */ 1084 extern errcode_t ext2fs_extent_header_verify(void *ptr, int size); 1085 extern errcode_t ext2fs_extent_open(ext2_filsys fs, ext2_ino_t ino, 1086 ext2_extent_handle_t *handle); 1087 extern errcode_t ext2fs_extent_open2(ext2_filsys fs, ext2_ino_t ino, 1088 struct ext2_inode *inode, 1089 ext2_extent_handle_t *ret_handle); 1090 extern void ext2fs_extent_free(ext2_extent_handle_t handle); 1091 extern errcode_t ext2fs_extent_get(ext2_extent_handle_t handle, 1092 int flags, struct ext2fs_extent *extent); 1093 extern errcode_t ext2fs_extent_node_split(ext2_extent_handle_t handle); 1094 extern errcode_t ext2fs_extent_replace(ext2_extent_handle_t handle, int flags, 1095 struct ext2fs_extent *extent); 1096 extern errcode_t ext2fs_extent_insert(ext2_extent_handle_t handle, int flags, 1097 struct ext2fs_extent *extent); 1098 extern errcode_t ext2fs_extent_set_bmap(ext2_extent_handle_t handle, 1099 blk64_t logical, blk64_t physical, 1100 int flags); 1101 extern errcode_t ext2fs_extent_delete(ext2_extent_handle_t handle, int flags); 1102 extern errcode_t ext2fs_extent_get_info(ext2_extent_handle_t handle, 1103 struct ext2_extent_info *info); 1104 extern errcode_t ext2fs_extent_goto(ext2_extent_handle_t handle, 1105 blk64_t blk); 1106 extern errcode_t ext2fs_extent_goto2(ext2_extent_handle_t handle, 1107 int leaf_level, blk64_t blk); 1108 extern errcode_t ext2fs_extent_fix_parents(ext2_extent_handle_t handle); 1109 1110 /* fileio.c */ 1111 extern errcode_t ext2fs_file_open2(ext2_filsys fs, ext2_ino_t ino, 1112 struct ext2_inode *inode, 1113 int flags, ext2_file_t *ret); 1114 extern errcode_t ext2fs_file_open(ext2_filsys fs, ext2_ino_t ino, 1115 int flags, ext2_file_t *ret); 1116 extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file); 1117 struct ext2_inode *ext2fs_file_get_inode(ext2_file_t file); 1118 extern ext2_ino_t ext2fs_file_get_inode_num(ext2_file_t file); 1119 extern errcode_t ext2fs_file_close(ext2_file_t file); 1120 extern errcode_t ext2fs_file_flush(ext2_file_t file); 1121 extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf, 1122 unsigned int wanted, unsigned int *got); 1123 extern errcode_t ext2fs_file_write(ext2_file_t file, const void *buf, 1124 unsigned int nbytes, unsigned int *written); 1125 extern errcode_t ext2fs_file_llseek(ext2_file_t file, __u64 offset, 1126 int whence, __u64 *ret_pos); 1127 extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset, 1128 int whence, ext2_off_t *ret_pos); 1129 errcode_t ext2fs_file_get_lsize(ext2_file_t file, __u64 *ret_size); 1130 extern ext2_off_t ext2fs_file_get_size(ext2_file_t file); 1131 extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size); 1132 extern errcode_t ext2fs_file_set_size2(ext2_file_t file, ext2_off64_t size); 1133 1134 /* finddev.c */ 1135 extern char *ext2fs_find_block_device(dev_t device); 1136 1137 /* flushb.c */ 1138 extern errcode_t ext2fs_sync_device(int fd, int flushb); 1139 1140 /* freefs.c */ 1141 extern void ext2fs_free(ext2_filsys fs); 1142 extern void ext2fs_free_dblist(ext2_dblist dblist); 1143 extern void ext2fs_badblocks_list_free(ext2_badblocks_list bb); 1144 extern void ext2fs_u32_list_free(ext2_u32_list bb); 1145 1146 /* gen_bitmap.c */ 1147 extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap); 1148 extern errcode_t ext2fs_make_generic_bitmap(errcode_t magic, ext2_filsys fs, 1149 __u32 start, __u32 end, 1150 __u32 real_end, 1151 const char *descr, char *init_map, 1152 ext2fs_generic_bitmap *ret); 1153 extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start, 1154 __u32 end, 1155 __u32 real_end, 1156 const char *descr, 1157 ext2fs_generic_bitmap *ret); 1158 extern errcode_t ext2fs_copy_generic_bitmap(ext2fs_generic_bitmap src, 1159 ext2fs_generic_bitmap *dest); 1160 extern void ext2fs_clear_generic_bitmap(ext2fs_generic_bitmap bitmap); 1161 extern errcode_t ext2fs_fudge_generic_bitmap_end(ext2fs_inode_bitmap bitmap, 1162 errcode_t magic, 1163 errcode_t neq, 1164 ext2_ino_t end, 1165 ext2_ino_t *oend); 1166 extern void ext2fs_set_generic_bitmap_padding(ext2fs_generic_bitmap map); 1167 extern errcode_t ext2fs_resize_generic_bitmap(errcode_t magic, 1168 __u32 new_end, 1169 __u32 new_real_end, 1170 ext2fs_generic_bitmap bmap); 1171 extern errcode_t ext2fs_compare_generic_bitmap(errcode_t magic, errcode_t neq, 1172 ext2fs_generic_bitmap bm1, 1173 ext2fs_generic_bitmap bm2); 1174 extern errcode_t ext2fs_get_generic_bitmap_range(ext2fs_generic_bitmap bmap, 1175 errcode_t magic, 1176 __u32 start, __u32 num, 1177 void *out); 1178 extern errcode_t ext2fs_set_generic_bitmap_range(ext2fs_generic_bitmap bmap, 1179 errcode_t magic, 1180 __u32 start, __u32 num, 1181 void *in); 1182 extern errcode_t ext2fs_find_first_zero_generic_bitmap(ext2fs_generic_bitmap bitmap, 1183 __u32 start, __u32 end, 1184 __u32 *out); 1185 1186 /* gen_bitmap64.c */ 1187 1188 /* Generate and print bitmap usage statistics */ 1189 #define BMAP_STATS 1190 1191 void ext2fs_free_generic_bmap(ext2fs_generic_bitmap bmap); 1192 errcode_t ext2fs_alloc_generic_bmap(ext2_filsys fs, errcode_t magic, 1193 int type, __u64 start, __u64 end, 1194 __u64 real_end, 1195 const char *descr, 1196 ext2fs_generic_bitmap *ret); 1197 errcode_t ext2fs_copy_generic_bmap(ext2fs_generic_bitmap src, 1198 ext2fs_generic_bitmap *dest); 1199 void ext2fs_clear_generic_bmap(ext2fs_generic_bitmap bitmap); 1200 errcode_t ext2fs_fudge_generic_bmap_end(ext2fs_generic_bitmap bitmap, 1201 errcode_t neq, 1202 __u64 end, __u64 *oend); 1203 void ext2fs_set_generic_bmap_padding(ext2fs_generic_bitmap bmap); 1204 errcode_t ext2fs_resize_generic_bmap(ext2fs_generic_bitmap bmap, 1205 __u64 new_end, 1206 __u64 new_real_end); 1207 errcode_t ext2fs_compare_generic_bmap(errcode_t neq, 1208 ext2fs_generic_bitmap bm1, 1209 ext2fs_generic_bitmap bm2); 1210 errcode_t ext2fs_get_generic_bmap_range(ext2fs_generic_bitmap bmap, 1211 __u64 start, unsigned int num, 1212 void *out); 1213 errcode_t ext2fs_set_generic_bmap_range(ext2fs_generic_bitmap bmap, 1214 __u64 start, unsigned int num, 1215 void *in); 1216 errcode_t ext2fs_convert_subcluster_bitmap(ext2_filsys fs, 1217 ext2fs_block_bitmap *bitmap); 1218 1219 /* getsize.c */ 1220 extern errcode_t ext2fs_get_device_size(const char *file, int blocksize, 1221 blk_t *retblocks); 1222 extern errcode_t ext2fs_get_device_size2(const char *file, int blocksize, 1223 blk64_t *retblocks); 1224 1225 /* getsectsize.c */ 1226 extern int ext2fs_get_dio_alignment(int fd); 1227 errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize); 1228 errcode_t ext2fs_get_device_phys_sectsize(const char *file, int *sectsize); 1229 1230 /* i_block.c */ 1231 errcode_t ext2fs_iblk_add_blocks(ext2_filsys fs, struct ext2_inode *inode, 1232 blk64_t num_blocks); 1233 errcode_t ext2fs_iblk_sub_blocks(ext2_filsys fs, struct ext2_inode *inode, 1234 blk64_t num_blocks); 1235 errcode_t ext2fs_iblk_set(ext2_filsys fs, struct ext2_inode *inode, blk64_t b); 1236 1237 /* imager.c */ 1238 extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags); 1239 extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags); 1240 extern errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd, int flags); 1241 extern errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd, int flags); 1242 extern errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags); 1243 extern errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags); 1244 1245 /* ind_block.c */ 1246 errcode_t ext2fs_read_ind_block(ext2_filsys fs, blk_t blk, void *buf); 1247 errcode_t ext2fs_write_ind_block(ext2_filsys fs, blk_t blk, void *buf); 1248 1249 /* initialize.c */ 1250 extern errcode_t ext2fs_initialize(const char *name, int flags, 1251 struct ext2_super_block *param, 1252 io_manager manager, ext2_filsys *ret_fs); 1253 1254 /* icount.c */ 1255 extern void ext2fs_free_icount(ext2_icount_t icount); 1256 extern errcode_t ext2fs_create_icount_tdb(ext2_filsys fs, char *tdb_dir, 1257 int flags, ext2_icount_t *ret); 1258 extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags, 1259 unsigned int size, 1260 ext2_icount_t hint, ext2_icount_t *ret); 1261 extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags, 1262 unsigned int size, 1263 ext2_icount_t *ret); 1264 extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ext2_ino_t ino, 1265 __u16 *ret); 1266 extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ext2_ino_t ino, 1267 __u16 *ret); 1268 extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ext2_ino_t ino, 1269 __u16 *ret); 1270 extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ext2_ino_t ino, 1271 __u16 count); 1272 extern ext2_ino_t ext2fs_get_icount_size(ext2_icount_t icount); 1273 errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *); 1274 1275 /* inline.c */ 1276 1277 extern errcode_t ext2fs_get_memalign(unsigned long size, 1278 unsigned long align, void *ptr); 1279 1280 /* inode.c */ 1281 extern errcode_t ext2fs_flush_icache(ext2_filsys fs); 1282 extern errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan, 1283 ext2_ino_t *ino, 1284 struct ext2_inode *inode, 1285 int bufsize); 1286 extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks, 1287 ext2_inode_scan *ret_scan); 1288 extern void ext2fs_close_inode_scan(ext2_inode_scan scan); 1289 extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino, 1290 struct ext2_inode *inode); 1291 extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan, 1292 int group); 1293 extern void ext2fs_set_inode_callback 1294 (ext2_inode_scan scan, 1295 errcode_t (*done_group)(ext2_filsys fs, 1296 ext2_inode_scan scan, 1297 dgrp_t group, 1298 void * priv_data), 1299 void *done_group_data); 1300 extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags, 1301 int clear_flags); 1302 extern errcode_t ext2fs_read_inode_full(ext2_filsys fs, ext2_ino_t ino, 1303 struct ext2_inode * inode, 1304 int bufsize); 1305 extern errcode_t ext2fs_read_inode (ext2_filsys fs, ext2_ino_t ino, 1306 struct ext2_inode * inode); 1307 extern errcode_t ext2fs_write_inode_full(ext2_filsys fs, ext2_ino_t ino, 1308 struct ext2_inode * inode, 1309 int bufsize); 1310 extern errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino, 1311 struct ext2_inode * inode); 1312 extern errcode_t ext2fs_write_new_inode(ext2_filsys fs, ext2_ino_t ino, 1313 struct ext2_inode * inode); 1314 extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); 1315 extern errcode_t ext2fs_check_directory(ext2_filsys fs, ext2_ino_t ino); 1316 1317 /* inode_io.c */ 1318 extern io_manager inode_io_manager; 1319 extern errcode_t ext2fs_inode_io_intern(ext2_filsys fs, ext2_ino_t ino, 1320 char **name); 1321 extern errcode_t ext2fs_inode_io_intern2(ext2_filsys fs, ext2_ino_t ino, 1322 struct ext2_inode *inode, 1323 char **name); 1324 1325 /* ismounted.c */ 1326 extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags); 1327 extern errcode_t ext2fs_check_mount_point(const char *device, int *mount_flags, 1328 char *mtpt, int mtlen); 1329 1330 /* punch.c */ 1331 /* 1332 * NOTE: This function removes from an inode the blocks "start", "end", and 1333 * every block in between. 1334 */ 1335 extern errcode_t ext2fs_punch(ext2_filsys fs, ext2_ino_t ino, 1336 struct ext2_inode *inode, 1337 char *block_buf, blk64_t start, 1338 blk64_t end); 1339 1340 /* namei.c */ 1341 extern errcode_t ext2fs_lookup(ext2_filsys fs, ext2_ino_t dir, const char *name, 1342 int namelen, char *buf, ext2_ino_t *inode); 1343 extern errcode_t ext2fs_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1344 const char *name, ext2_ino_t *inode); 1345 errcode_t ext2fs_namei_follow(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1346 const char *name, ext2_ino_t *inode); 1347 extern errcode_t ext2fs_follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 1348 ext2_ino_t inode, ext2_ino_t *res_inode); 1349 1350 /* native.c */ 1351 int ext2fs_native_flag(void); 1352 1353 /* newdir.c */ 1354 extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino, 1355 ext2_ino_t parent_ino, char **block); 1356 1357 /* mkdir.c */ 1358 extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum, 1359 const char *name); 1360 1361 /* mkjournal.c */ 1362 extern errcode_t ext2fs_zero_blocks(ext2_filsys fs, blk_t blk, int num, 1363 blk_t *ret_blk, int *ret_count); 1364 extern errcode_t ext2fs_zero_blocks2(ext2_filsys fs, blk64_t blk, int num, 1365 blk64_t *ret_blk, int *ret_count); 1366 extern errcode_t ext2fs_create_journal_superblock(ext2_filsys fs, 1367 __u32 num_blocks, int flags, 1368 char **ret_jsb); 1369 extern errcode_t ext2fs_add_journal_device(ext2_filsys fs, 1370 ext2_filsys journal_dev); 1371 extern errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t num_blocks, 1372 int flags); 1373 extern int ext2fs_default_journal_size(__u64 num_blocks); 1374 1375 /* openfs.c */ 1376 extern errcode_t ext2fs_open(const char *name, int flags, int superblock, 1377 unsigned int block_size, io_manager manager, 1378 ext2_filsys *ret_fs); 1379 extern errcode_t ext2fs_open2(const char *name, const char *io_options, 1380 int flags, int superblock, 1381 unsigned int block_size, io_manager manager, 1382 ext2_filsys *ret_fs); 1383 extern blk64_t ext2fs_descriptor_block_loc2(ext2_filsys fs, 1384 blk64_t group_block, dgrp_t i); 1385 extern blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block, 1386 dgrp_t i); 1387 errcode_t ext2fs_get_data_io(ext2_filsys fs, io_channel *old_io); 1388 errcode_t ext2fs_set_data_io(ext2_filsys fs, io_channel new_io); 1389 errcode_t ext2fs_rewrite_to_io(ext2_filsys fs, io_channel new_io); 1390 1391 /* get_pathname.c */ 1392 extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino, 1393 char **name); 1394 1395 /* link.c */ 1396 errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name, 1397 ext2_ino_t ino, int flags); 1398 errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir, const char *name, 1399 ext2_ino_t ino, int flags); 1400 1401 /* symlink.c */ 1402 errcode_t ext2fs_symlink(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t ino, 1403 const char *name, char *target); 1404 1405 /* mmp.c */ 1406 errcode_t ext2fs_mmp_read(ext2_filsys fs, blk64_t mmp_blk, void *buf); 1407 errcode_t ext2fs_mmp_write(ext2_filsys fs, blk64_t mmp_blk, void *buf); 1408 errcode_t ext2fs_mmp_clear(ext2_filsys fs); 1409 errcode_t ext2fs_mmp_init(ext2_filsys fs); 1410 errcode_t ext2fs_mmp_start(ext2_filsys fs); 1411 errcode_t ext2fs_mmp_update(ext2_filsys fs); 1412 errcode_t ext2fs_mmp_stop(ext2_filsys fs); 1413 unsigned ext2fs_mmp_new_seq(void); 1414 1415 /* read_bb.c */ 1416 extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs, 1417 ext2_badblocks_list *bb_list); 1418 1419 /* read_bb_file.c */ 1420 extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f, 1421 ext2_badblocks_list *bb_list, 1422 void *priv_data, 1423 void (*invalid)(ext2_filsys fs, 1424 blk_t blk, 1425 char *badstr, 1426 void *priv_data)); 1427 extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f, 1428 ext2_badblocks_list *bb_list, 1429 void (*invalid)(ext2_filsys fs, 1430 blk_t blk)); 1431 1432 /* res_gdt.c */ 1433 extern errcode_t ext2fs_create_resize_inode(ext2_filsys fs); 1434 1435 /* swapfs.c */ 1436 extern void ext2fs_swap_ext_attr(char *to, char *from, int bufsize, 1437 int has_header); 1438 extern void ext2fs_swap_ext_attr_header(struct ext2_ext_attr_header *to_header, 1439 struct ext2_ext_attr_header *from_hdr); 1440 extern void ext2fs_swap_ext_attr_entry(struct ext2_ext_attr_entry *to_entry, 1441 struct ext2_ext_attr_entry *from_entry); 1442 extern void ext2fs_swap_super(struct ext2_super_block * super); 1443 extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp); 1444 extern void ext2fs_swap_group_desc2(ext2_filsys, struct ext2_group_desc *gdp); 1445 extern void ext2fs_swap_inode_full(ext2_filsys fs, struct ext2_inode_large *t, 1446 struct ext2_inode_large *f, int hostorder, 1447 int bufsize); 1448 extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t, 1449 struct ext2_inode *f, int hostorder); 1450 extern void ext2fs_swap_mmp(struct mmp_struct *mmp); 1451 1452 /* unix_io.c */ 1453 extern int ext2fs_open_file(const char *pathname, int flags, mode_t mode); 1454 extern int ext2fs_stat(const char *path, ext2fs_struct_stat *buf); 1455 extern int ext2fs_fstat(int fd, ext2fs_struct_stat *buf); 1456 1457 /* valid_blk.c */ 1458 extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode); 1459 extern int ext2fs_inode_has_valid_blocks2(ext2_filsys fs, 1460 struct ext2_inode *inode); 1461 1462 /* version.c */ 1463 extern int ext2fs_parse_version_string(const char *ver_string); 1464 extern int ext2fs_get_library_version(const char **ver_string, 1465 const char **date_string); 1466 1467 /* write_bb_file.c */ 1468 extern errcode_t ext2fs_write_bb_FILE(ext2_badblocks_list bb_list, 1469 unsigned int flags, 1470 FILE *f); 1471 1472 1473 /* inline functions */ 1474 #ifdef NO_INLINE_FUNCS 1475 extern errcode_t ext2fs_get_mem(unsigned long size, void *ptr); 1476 extern errcode_t ext2fs_get_memzero(unsigned long size, void *ptr); 1477 extern errcode_t ext2fs_get_array(unsigned long count, 1478 unsigned long size, void *ptr); 1479 extern errcode_t ext2fs_get_arrayzero(unsigned long count, 1480 unsigned long size, void *ptr); 1481 extern errcode_t ext2fs_free_mem(void *ptr); 1482 extern errcode_t ext2fs_resize_mem(unsigned long old_size, 1483 unsigned long size, void *ptr); 1484 extern void ext2fs_mark_super_dirty(ext2_filsys fs); 1485 extern void ext2fs_mark_changed(ext2_filsys fs); 1486 extern int ext2fs_test_changed(ext2_filsys fs); 1487 extern void ext2fs_mark_valid(ext2_filsys fs); 1488 extern void ext2fs_unmark_valid(ext2_filsys fs); 1489 extern int ext2fs_test_valid(ext2_filsys fs); 1490 extern void ext2fs_mark_ib_dirty(ext2_filsys fs); 1491 extern void ext2fs_mark_bb_dirty(ext2_filsys fs); 1492 extern int ext2fs_test_ib_dirty(ext2_filsys fs); 1493 extern int ext2fs_test_bb_dirty(ext2_filsys fs); 1494 extern dgrp_t ext2fs_group_of_blk(ext2_filsys fs, blk_t blk); 1495 extern dgrp_t ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino); 1496 extern blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group); 1497 extern blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group); 1498 extern blk_t ext2fs_inode_data_blocks(ext2_filsys fs, 1499 struct ext2_inode *inode); 1500 extern unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b); 1501 extern __u64 ext2fs_div64_ceil(__u64 a, __u64 b); 1502 #endif 1503 1504 /* 1505 * The actual inlined functions definitions themselves... 1506 * 1507 * If NO_INLINE_FUNCS is defined, then we won't try to do inline 1508 * functions at all! 1509 */ 1510 #if (defined(INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS)) 1511 #ifdef INCLUDE_INLINE_FUNCS 1512 #define _INLINE_ extern 1513 #else 1514 #if (__STDC_VERSION__ >= 199901L) 1515 #define _INLINE_ inline 1516 #else 1517 #ifdef __GNUC__ 1518 #define _INLINE_ extern __inline__ 1519 #else /* For Watcom C */ 1520 #define _INLINE_ extern inline 1521 #endif /* __GNUC__ */ 1522 #endif /* __STDC_VERSION__ >= 199901L */ 1523 #endif 1524 1525 #ifndef EXT2_CUSTOM_MEMORY_ROUTINES 1526 #include <string.h> 1527 /* 1528 * Allocate memory. The 'ptr' arg must point to a pointer. 1529 */ 1530 _INLINE_ errcode_t ext2fs_get_mem(unsigned long size, void *ptr) 1531 { 1532 void *pp; 1533 1534 pp = malloc(size); 1535 if (!pp) 1536 return EXT2_ET_NO_MEMORY; 1537 memcpy(ptr, &pp, sizeof (pp)); 1538 return 0; 1539 } 1540 1541 _INLINE_ errcode_t ext2fs_get_memzero(unsigned long size, void *ptr) 1542 { 1543 void *pp; 1544 1545 pp = malloc(size); 1546 if (!pp) 1547 return EXT2_ET_NO_MEMORY; 1548 memset(pp, 0, size); 1549 memcpy(ptr, &pp, sizeof(pp)); 1550 return 0; 1551 } 1552 1553 _INLINE_ errcode_t ext2fs_get_array(unsigned long count, unsigned long size, void *ptr) 1554 { 1555 if (count && (-1UL)/count<size) 1556 return EXT2_ET_NO_MEMORY; 1557 return ext2fs_get_mem(count*size, ptr); 1558 } 1559 1560 _INLINE_ errcode_t ext2fs_get_arrayzero(unsigned long count, 1561 unsigned long size, void *ptr) 1562 { 1563 void *pp; 1564 1565 if (count && (-1UL)/count<size) 1566 return EXT2_ET_NO_MEMORY; 1567 pp = calloc(count, size); 1568 if (!pp) 1569 return EXT2_ET_NO_MEMORY; 1570 memcpy(ptr, &pp, sizeof(pp)); 1571 return 0; 1572 } 1573 1574 /* 1575 * Free memory. The 'ptr' arg must point to a pointer. 1576 */ 1577 _INLINE_ errcode_t ext2fs_free_mem(void *ptr) 1578 { 1579 void *p; 1580 1581 memcpy(&p, ptr, sizeof(p)); 1582 free(p); 1583 p = 0; 1584 memcpy(ptr, &p, sizeof(p)); 1585 return 0; 1586 } 1587 1588 /* 1589 * Resize memory. The 'ptr' arg must point to a pointer. 1590 */ 1591 _INLINE_ errcode_t ext2fs_resize_mem(unsigned long EXT2FS_ATTR((unused)) old_size, 1592 unsigned long size, void *ptr) 1593 { 1594 void *p; 1595 1596 /* Use "memcpy" for pointer assignments here to avoid problems 1597 * with C99 strict type aliasing rules. */ 1598 memcpy(&p, ptr, sizeof(p)); 1599 p = realloc(p, size); 1600 if (!p) 1601 return EXT2_ET_NO_MEMORY; 1602 memcpy(ptr, &p, sizeof(p)); 1603 return 0; 1604 } 1605 #endif /* Custom memory routines */ 1606 1607 /* 1608 * Mark a filesystem superblock as dirty 1609 */ 1610 _INLINE_ void ext2fs_mark_super_dirty(ext2_filsys fs) 1611 { 1612 fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_CHANGED; 1613 } 1614 1615 /* 1616 * Mark a filesystem as changed 1617 */ 1618 _INLINE_ void ext2fs_mark_changed(ext2_filsys fs) 1619 { 1620 fs->flags |= EXT2_FLAG_CHANGED; 1621 } 1622 1623 /* 1624 * Check to see if a filesystem has changed 1625 */ 1626 _INLINE_ int ext2fs_test_changed(ext2_filsys fs) 1627 { 1628 return (fs->flags & EXT2_FLAG_CHANGED); 1629 } 1630 1631 /* 1632 * Mark a filesystem as valid 1633 */ 1634 _INLINE_ void ext2fs_mark_valid(ext2_filsys fs) 1635 { 1636 fs->flags |= EXT2_FLAG_VALID; 1637 } 1638 1639 /* 1640 * Mark a filesystem as NOT valid 1641 */ 1642 _INLINE_ void ext2fs_unmark_valid(ext2_filsys fs) 1643 { 1644 fs->flags &= ~EXT2_FLAG_VALID; 1645 } 1646 1647 /* 1648 * Check to see if a filesystem is valid 1649 */ 1650 _INLINE_ int ext2fs_test_valid(ext2_filsys fs) 1651 { 1652 return (fs->flags & EXT2_FLAG_VALID); 1653 } 1654 1655 /* 1656 * Mark the inode bitmap as dirty 1657 */ 1658 _INLINE_ void ext2fs_mark_ib_dirty(ext2_filsys fs) 1659 { 1660 fs->flags |= EXT2_FLAG_IB_DIRTY | EXT2_FLAG_CHANGED; 1661 } 1662 1663 /* 1664 * Mark the block bitmap as dirty 1665 */ 1666 _INLINE_ void ext2fs_mark_bb_dirty(ext2_filsys fs) 1667 { 1668 fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_CHANGED; 1669 } 1670 1671 /* 1672 * Check to see if a filesystem's inode bitmap is dirty 1673 */ 1674 _INLINE_ int ext2fs_test_ib_dirty(ext2_filsys fs) 1675 { 1676 return (fs->flags & EXT2_FLAG_IB_DIRTY); 1677 } 1678 1679 /* 1680 * Check to see if a filesystem's block bitmap is dirty 1681 */ 1682 _INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs) 1683 { 1684 return (fs->flags & EXT2_FLAG_BB_DIRTY); 1685 } 1686 1687 /* 1688 * Return the group # of a block 1689 */ 1690 _INLINE_ dgrp_t ext2fs_group_of_blk(ext2_filsys fs, blk_t blk) 1691 { 1692 return ext2fs_group_of_blk2(fs, blk); 1693 } 1694 /* 1695 * Return the group # of an inode number 1696 */ 1697 _INLINE_ dgrp_t ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino) 1698 { 1699 return (ino - 1) / fs->super->s_inodes_per_group; 1700 } 1701 1702 /* 1703 * Return the first block (inclusive) in a group 1704 */ 1705 _INLINE_ blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group) 1706 { 1707 return (blk_t) ext2fs_group_first_block2(fs, group); 1708 } 1709 1710 /* 1711 * Return the last block (inclusive) in a group 1712 */ 1713 _INLINE_ blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group) 1714 { 1715 return (blk_t) ext2fs_group_last_block2(fs, group); 1716 } 1717 1718 _INLINE_ blk_t ext2fs_inode_data_blocks(ext2_filsys fs, 1719 struct ext2_inode *inode) 1720 { 1721 return (blk_t) ext2fs_inode_data_blocks2(fs, inode); 1722 } 1723 1724 /* 1725 * This is an efficient, overflow safe way of calculating ceil((1.0 * a) / b) 1726 */ 1727 _INLINE_ unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b) 1728 { 1729 if (!a) 1730 return 0; 1731 return ((a - 1) / b) + 1; 1732 } 1733 1734 _INLINE_ __u64 ext2fs_div64_ceil(__u64 a, __u64 b) 1735 { 1736 if (!a) 1737 return 0; 1738 return ((a - 1) / b) + 1; 1739 } 1740 1741 #undef _INLINE_ 1742 #endif 1743 1744 #ifdef __cplusplus 1745 } 1746 #endif 1747 1748 #endif /* _EXT2FS_EXT2FS_H */ 1749
