pass1.c revision e3507739e4185bdb2394928eb6479e48f4e690a8
1effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch/* 2effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch * pass1.c -- pass #1 of e2fsck: sequential scan of the inode table 3effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch * 4effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch * Copyright (C) 1993, 1994, 1995, 1996, 1997 Theodore Ts'o. 5effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch * 6effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch * %Begin-Header% 7effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch * This file may be redistributed under the terms of the GNU Public 8effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch * License. 9effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch * %End-Header% 10effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch * 11effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch * Pass 1 of e2fsck iterates over all the inodes in the filesystems, 12effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch * and applies the following tests to each inode: 13effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch * 14effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch * - The mode field of the inode must be legal. 15effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch * - The size and block count fields of the inode are correct. 16effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch * - A data block must not be used by another inode 17effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch * 18effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch * Pass 1 also gathers the collects the following information: 19effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch * 20effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch * - A bitmap of which inodes are in use. (inode_used_map) 21effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch * - A bitmap of which inodes are directories. (inode_dir_map) 22effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch * - A bitmap of which inodes are regular files. (inode_reg_map) 23effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch * - A bitmap of which inodes have bad fields. (inode_bad_map) 24effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch * - A bitmap of which inodes are in bad blocks. (inode_bb_map) 25effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch * - A bitmap of which inodes are imagic inodes. (inode_imagic_map) 26effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch * - A bitmap of which blocks are in use. (block_found_map) 27effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch * - A bitmap of which blocks are in use by two inodes (block_dup_map) 28effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch * - The data blocks of the directory inodes. (dir_map) 29effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch * 30effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch * Pass 1 is designed to stash away enough information so that the 31effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch * other passes should not need to read in the inode information 32effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch * during the normal course of a filesystem check. (Althogh if an 33effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch * inconsistency is detected, other passes may need to read in an 34effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch * inode to fix it.) 35effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch * 36effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch * Note that pass 1B will be invoked if there are any duplicate blocks 37effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch * found. 38effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch */ 39effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch 40effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch#define _GNU_SOURCE 1 /* get strnlen() */ 41effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch#include "config.h" 42effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch#include <string.h> 43effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch#include <time.h> 44effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch#ifdef HAVE_ERRNO_H 45effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch#include <errno.h> 46effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch#endif 47effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch 48effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch#include "e2fsck.h" 49effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch#include <ext2fs/ext2_ext_attr.h> 50effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch 51effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch#include "problem.h" 52effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch 53effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch#ifdef NO_INLINE_FUNCS 54effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch#define _INLINE_ 55effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch#else 56effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch#define _INLINE_ inline 57effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch#endif 58effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch 59effb81e5f8246d0db0270817048dc992db66e9fbBen Murdochstatic int process_block(ext2_filsys fs, blk64_t *blocknr, 60effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch e2_blkcnt_t blockcnt, blk64_t ref_blk, 61effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch int ref_offset, void *priv_data); 62effb81e5f8246d0db0270817048dc992db66e9fbBen Murdochstatic int process_bad_block(ext2_filsys fs, blk64_t *block_nr, 63effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch e2_blkcnt_t blockcnt, blk64_t ref_blk, 64 int ref_offset, void *priv_data); 65static void check_blocks(e2fsck_t ctx, struct problem_context *pctx, 66 char *block_buf); 67static void mark_table_blocks(e2fsck_t ctx); 68static void alloc_bb_map(e2fsck_t ctx); 69static void alloc_imagic_map(e2fsck_t ctx); 70static void mark_inode_bad(e2fsck_t ctx, ino_t ino); 71static void handle_fs_bad_blocks(e2fsck_t ctx); 72static void process_inodes(e2fsck_t ctx, char *block_buf); 73static EXT2_QSORT_TYPE process_inode_cmp(const void *a, const void *b); 74static errcode_t scan_callback(ext2_filsys fs, ext2_inode_scan scan, 75 dgrp_t group, void * priv_data); 76static void adjust_extattr_refcount(e2fsck_t ctx, ext2_refcount_t refcount, 77 char *block_buf, int adjust_sign); 78/* static char *describe_illegal_block(ext2_filsys fs, blk64_t block); */ 79 80struct process_block_struct { 81 ext2_ino_t ino; 82 unsigned is_dir:1, is_reg:1, clear:1, suppress:1, 83 fragmented:1, compressed:1, bbcheck:1; 84 blk64_t num_blocks; 85 blk64_t max_blocks; 86 e2_blkcnt_t last_block; 87 e2_blkcnt_t last_init_lblock; 88 e2_blkcnt_t last_db_block; 89 int num_illegal_blocks; 90 blk64_t previous_block; 91 struct ext2_inode *inode; 92 struct problem_context *pctx; 93 ext2fs_block_bitmap fs_meta_blocks; 94 e2fsck_t ctx; 95}; 96 97struct process_inode_block { 98 ext2_ino_t ino; 99 struct ext2_inode inode; 100}; 101 102struct scan_callback_struct { 103 e2fsck_t ctx; 104 char *block_buf; 105}; 106 107/* 108 * For the inodes to process list. 109 */ 110static struct process_inode_block *inodes_to_process; 111static int process_inode_count; 112 113static __u64 ext2_max_sizes[EXT2_MAX_BLOCK_LOG_SIZE - 114 EXT2_MIN_BLOCK_LOG_SIZE + 1]; 115 116/* 117 * Free all memory allocated by pass1 in preparation for restarting 118 * things. 119 */ 120static void unwind_pass1(ext2_filsys fs EXT2FS_ATTR((unused))) 121{ 122 ext2fs_free_mem(&inodes_to_process); 123 inodes_to_process = 0; 124} 125 126/* 127 * Check to make sure a device inode is real. Returns 1 if the device 128 * checks out, 0 if not. 129 * 130 * Note: this routine is now also used to check FIFO's and Sockets, 131 * since they have the same requirement; the i_block fields should be 132 * zero. 133 */ 134int e2fsck_pass1_check_device_inode(ext2_filsys fs EXT2FS_ATTR((unused)), 135 struct ext2_inode *inode) 136{ 137 int i; 138 139 /* 140 * If the index flag is set, then this is a bogus 141 * device/fifo/socket 142 */ 143 if (inode->i_flags & EXT2_INDEX_FL) 144 return 0; 145 146 /* 147 * We should be able to do the test below all the time, but 148 * because the kernel doesn't forcibly clear the device 149 * inode's additional i_block fields, there are some rare 150 * occasions when a legitimate device inode will have non-zero 151 * additional i_block fields. So for now, we only complain 152 * when the immutable flag is set, which should never happen 153 * for devices. (And that's when the problem is caused, since 154 * you can't set or clear immutable flags for devices.) Once 155 * the kernel has been fixed we can change this... 156 */ 157 if (inode->i_flags & (EXT2_IMMUTABLE_FL | EXT2_APPEND_FL)) { 158 for (i=4; i < EXT2_N_BLOCKS; i++) 159 if (inode->i_block[i]) 160 return 0; 161 } 162 return 1; 163} 164 165/* 166 * Check to make sure a symlink inode is real. Returns 1 if the symlink 167 * checks out, 0 if not. 168 */ 169int e2fsck_pass1_check_symlink(ext2_filsys fs, ext2_ino_t ino, 170 struct ext2_inode *inode, char *buf) 171{ 172 unsigned int len; 173 int i; 174 blk64_t blocks; 175 ext2_extent_handle_t handle; 176 struct ext2_extent_info info; 177 struct ext2fs_extent extent; 178 179 if ((inode->i_size_high || inode->i_size == 0) || 180 (inode->i_flags & EXT2_INDEX_FL)) 181 return 0; 182 183 if (inode->i_flags & EXT4_EXTENTS_FL) { 184 if (inode->i_size > fs->blocksize) 185 return 0; 186 if (ext2fs_extent_open2(fs, ino, inode, &handle)) 187 return 0; 188 i = 0; 189 if (ext2fs_extent_get_info(handle, &info) || 190 (info.num_entries != 1) || 191 (info.max_depth != 0)) 192 goto exit_extent; 193 if (ext2fs_extent_get(handle, EXT2_EXTENT_ROOT, &extent) || 194 (extent.e_lblk != 0) || 195 (extent.e_len != 1) || 196 (extent.e_pblk < fs->super->s_first_data_block) || 197 (extent.e_pblk >= ext2fs_blocks_count(fs->super))) 198 goto exit_extent; 199 i = 1; 200 exit_extent: 201 ext2fs_extent_free(handle); 202 return i; 203 } 204 205 blocks = ext2fs_inode_data_blocks2(fs, inode); 206 if (blocks) { 207 if ((inode->i_size >= fs->blocksize) || 208 (blocks != fs->blocksize >> 9) || 209 (inode->i_block[0] < fs->super->s_first_data_block) || 210 (inode->i_block[0] >= ext2fs_blocks_count(fs->super))) 211 return 0; 212 213 for (i = 1; i < EXT2_N_BLOCKS; i++) 214 if (inode->i_block[i]) 215 return 0; 216 217 if (io_channel_read_blk64(fs->io, inode->i_block[0], 1, buf)) 218 return 0; 219 220 len = strnlen(buf, fs->blocksize); 221 if (len == fs->blocksize) 222 return 0; 223 } else { 224 if (inode->i_size >= sizeof(inode->i_block)) 225 return 0; 226 227 len = strnlen((char *)inode->i_block, sizeof(inode->i_block)); 228 if (len == sizeof(inode->i_block)) 229 return 0; 230 } 231 if (len != inode->i_size) 232 return 0; 233 return 1; 234} 235 236/* 237 * If the immutable (or append-only) flag is set on the inode, offer 238 * to clear it. 239 */ 240#define BAD_SPECIAL_FLAGS (EXT2_IMMUTABLE_FL | EXT2_APPEND_FL) 241static void check_immutable(e2fsck_t ctx, struct problem_context *pctx) 242{ 243 if (!(pctx->inode->i_flags & BAD_SPECIAL_FLAGS)) 244 return; 245 246 if (!fix_problem(ctx, PR_1_SET_IMMUTABLE, pctx)) 247 return; 248 249 pctx->inode->i_flags &= ~BAD_SPECIAL_FLAGS; 250 e2fsck_write_inode(ctx, pctx->ino, pctx->inode, "pass1"); 251} 252 253/* 254 * If device, fifo or socket, check size is zero -- if not offer to 255 * clear it 256 */ 257static void check_size(e2fsck_t ctx, struct problem_context *pctx) 258{ 259 struct ext2_inode *inode = pctx->inode; 260 261 if (EXT2_I_SIZE(inode) == 0) 262 return; 263 264 if (!fix_problem(ctx, PR_1_SET_NONZSIZE, pctx)) 265 return; 266 267 inode->i_size = 0; 268 inode->i_size_high = 0; 269 e2fsck_write_inode(ctx, pctx->ino, pctx->inode, "pass1"); 270} 271 272static void check_ea_in_inode(e2fsck_t ctx, struct problem_context *pctx) 273{ 274 struct ext2_super_block *sb = ctx->fs->super; 275 struct ext2_inode_large *inode; 276 struct ext2_ext_attr_entry *entry; 277 char *start; 278 unsigned int storage_size, remain; 279 int problem = 0; 280 281 inode = (struct ext2_inode_large *) pctx->inode; 282 storage_size = EXT2_INODE_SIZE(ctx->fs->super) - EXT2_GOOD_OLD_INODE_SIZE - 283 inode->i_extra_isize; 284 start = ((char *) inode) + EXT2_GOOD_OLD_INODE_SIZE + 285 inode->i_extra_isize + sizeof(__u32); 286 entry = (struct ext2_ext_attr_entry *) start; 287 288 /* scan all entry's headers first */ 289 290 /* take finish entry 0UL into account */ 291 remain = storage_size - sizeof(__u32); 292 293 while (!EXT2_EXT_IS_LAST_ENTRY(entry)) { 294 __u32 hash; 295 296 /* header eats this space */ 297 remain -= sizeof(struct ext2_ext_attr_entry); 298 299 /* is attribute name valid? */ 300 if (EXT2_EXT_ATTR_SIZE(entry->e_name_len) > remain) { 301 pctx->num = entry->e_name_len; 302 problem = PR_1_ATTR_NAME_LEN; 303 goto fix; 304 } 305 306 /* attribute len eats this space */ 307 remain -= EXT2_EXT_ATTR_SIZE(entry->e_name_len); 308 309 /* check value size */ 310 if (entry->e_value_size == 0 || entry->e_value_size > remain) { 311 pctx->num = entry->e_value_size; 312 problem = PR_1_ATTR_VALUE_SIZE; 313 goto fix; 314 } 315 316 /* e_value_block must be 0 in inode's ea */ 317 if (entry->e_value_block != 0) { 318 pctx->num = entry->e_value_block; 319 problem = PR_1_ATTR_VALUE_BLOCK; 320 goto fix; 321 } 322 323 hash = ext2fs_ext_attr_hash_entry(entry, 324 start + entry->e_value_offs); 325 326 /* e_hash may be 0 in older inode's ea */ 327 if (entry->e_hash != 0 && entry->e_hash != hash) { 328 pctx->num = entry->e_hash; 329 problem = PR_1_ATTR_HASH; 330 goto fix; 331 } 332 333 remain -= entry->e_value_size; 334 335 entry = EXT2_EXT_ATTR_NEXT(entry); 336 } 337fix: 338 /* 339 * it seems like a corruption. it's very unlikely we could repair 340 * EA(s) in automatic fashion -bzzz 341 */ 342 if (problem == 0 || !fix_problem(ctx, problem, pctx)) 343 return; 344 345 /* simply remove all possible EA(s) */ 346 *((__u32 *)start) = 0UL; 347 e2fsck_write_inode_full(ctx, pctx->ino, pctx->inode, 348 EXT2_INODE_SIZE(sb), "pass1"); 349} 350 351static void check_inode_extra_space(e2fsck_t ctx, struct problem_context *pctx) 352{ 353 struct ext2_super_block *sb = ctx->fs->super; 354 struct ext2_inode_large *inode; 355 __u32 *eamagic; 356 int min, max; 357 358 inode = (struct ext2_inode_large *) pctx->inode; 359 if (EXT2_INODE_SIZE(sb) == EXT2_GOOD_OLD_INODE_SIZE) { 360 /* this isn't large inode. so, nothing to check */ 361 return; 362 } 363 364#if 0 365 printf("inode #%u, i_extra_size %d\n", pctx->ino, 366 inode->i_extra_isize); 367#endif 368 /* i_extra_isize must cover i_extra_isize + i_checksum_hi at least */ 369 min = sizeof(inode->i_extra_isize) + sizeof(inode->i_checksum_hi); 370 max = EXT2_INODE_SIZE(sb) - EXT2_GOOD_OLD_INODE_SIZE; 371 /* 372 * For now we will allow i_extra_isize to be 0, but really 373 * implementations should never allow i_extra_isize to be 0 374 */ 375 if (inode->i_extra_isize && 376 (inode->i_extra_isize < min || inode->i_extra_isize > max)) { 377 if (!fix_problem(ctx, PR_1_EXTRA_ISIZE, pctx)) 378 return; 379 inode->i_extra_isize = min; 380 e2fsck_write_inode_full(ctx, pctx->ino, pctx->inode, 381 EXT2_INODE_SIZE(sb), "pass1"); 382 return; 383 } 384 385 eamagic = (__u32 *) (((char *) inode) + EXT2_GOOD_OLD_INODE_SIZE + 386 inode->i_extra_isize); 387 if (*eamagic == EXT2_EXT_ATTR_MAGIC) { 388 /* it seems inode has an extended attribute(s) in body */ 389 check_ea_in_inode(ctx, pctx); 390 } 391} 392 393/* 394 * Check to see if the inode might really be a directory, despite i_mode 395 * 396 * This is a lot of complexity for something for which I'm not really 397 * convinced happens frequently in the wild. If for any reason this 398 * causes any problems, take this code out. 399 * [tytso:20070331.0827EDT] 400 */ 401static void check_is_really_dir(e2fsck_t ctx, struct problem_context *pctx, 402 char *buf) 403{ 404 struct ext2_inode *inode = pctx->inode; 405 struct ext2_dir_entry *dirent; 406 errcode_t retval; 407 blk64_t blk; 408 unsigned int i, rec_len, not_device = 0; 409 int extent_fs; 410 411 /* 412 * If the mode looks OK, we believe it. If the first block in 413 * the i_block array is 0, this cannot be a directory. If the 414 * inode is extent-mapped, it is still the case that the latter 415 * cannot be 0 - the magic number in the extent header would make 416 * it nonzero. 417 */ 418 if (LINUX_S_ISDIR(inode->i_mode) || LINUX_S_ISREG(inode->i_mode) || 419 LINUX_S_ISLNK(inode->i_mode) || inode->i_block[0] == 0) 420 return; 421 422 /* 423 * Check the block numbers in the i_block array for validity: 424 * zero blocks are skipped (but the first one cannot be zero - 425 * see above), other blocks are checked against the first and 426 * max data blocks (from the the superblock) and against the 427 * block bitmap. Any invalid block found means this cannot be 428 * a directory. 429 * 430 * If there are non-zero blocks past the fourth entry, then 431 * this cannot be a device file: we remember that for the next 432 * check. 433 * 434 * For extent mapped files, we don't do any sanity checking: 435 * just try to get the phys block of logical block 0 and run 436 * with it. 437 */ 438 439 extent_fs = (ctx->fs->super->s_feature_incompat & 440 EXT3_FEATURE_INCOMPAT_EXTENTS); 441 if (extent_fs && (inode->i_flags & EXT4_EXTENTS_FL)) { 442 /* extent mapped */ 443 if (ext2fs_bmap2(ctx->fs, pctx->ino, inode, 0, 0, 0, 0, 444 &blk)) 445 return; 446 /* device files are never extent mapped */ 447 not_device++; 448 } else { 449 for (i=0; i < EXT2_N_BLOCKS; i++) { 450 blk = inode->i_block[i]; 451 if (!blk) 452 continue; 453 if (i >= 4) 454 not_device++; 455 456 if (blk < ctx->fs->super->s_first_data_block || 457 blk >= ext2fs_blocks_count(ctx->fs->super) || 458 ext2fs_fast_test_block_bitmap2(ctx->block_found_map, 459 blk)) 460 return; /* Invalid block, can't be dir */ 461 } 462 blk = inode->i_block[0]; 463 } 464 465 /* 466 * If the mode says this is a device file and the i_links_count field 467 * is sane and we have not ruled it out as a device file previously, 468 * we declare it a device file, not a directory. 469 */ 470 if ((LINUX_S_ISCHR(inode->i_mode) || LINUX_S_ISBLK(inode->i_mode)) && 471 (inode->i_links_count == 1) && !not_device) 472 return; 473 474 /* read the first block */ 475 ehandler_operation(_("reading directory block")); 476 retval = ext2fs_read_dir_block3(ctx->fs, blk, buf, 0); 477 ehandler_operation(0); 478 if (retval) 479 return; 480 481 dirent = (struct ext2_dir_entry *) buf; 482 retval = ext2fs_get_rec_len(ctx->fs, dirent, &rec_len); 483 if (retval) 484 return; 485 if (((dirent->name_len & 0xFF) != 1) || 486 (dirent->name[0] != '.') || 487 (dirent->inode != pctx->ino) || 488 (rec_len < 12) || 489 (rec_len % 4) || 490 (rec_len >= ctx->fs->blocksize - 12)) 491 return; 492 493 dirent = (struct ext2_dir_entry *) (buf + rec_len); 494 retval = ext2fs_get_rec_len(ctx->fs, dirent, &rec_len); 495 if (retval) 496 return; 497 if (((dirent->name_len & 0xFF) != 2) || 498 (dirent->name[0] != '.') || 499 (dirent->name[1] != '.') || 500 (rec_len < 12) || 501 (rec_len % 4)) 502 return; 503 504 if (fix_problem(ctx, PR_1_TREAT_AS_DIRECTORY, pctx)) { 505 inode->i_mode = (inode->i_mode & 07777) | LINUX_S_IFDIR; 506 e2fsck_write_inode_full(ctx, pctx->ino, inode, 507 EXT2_INODE_SIZE(ctx->fs->super), 508 "check_is_really_dir"); 509 } 510} 511 512extern void e2fsck_setup_tdb_icount(e2fsck_t ctx, int flags, 513 ext2_icount_t *ret) 514{ 515 unsigned int threshold; 516 ext2_ino_t num_dirs; 517 errcode_t retval; 518 char *tdb_dir; 519 int enable; 520 521 *ret = 0; 522 523 profile_get_string(ctx->profile, "scratch_files", "directory", 0, 0, 524 &tdb_dir); 525 profile_get_uint(ctx->profile, "scratch_files", 526 "numdirs_threshold", 0, 0, &threshold); 527 profile_get_boolean(ctx->profile, "scratch_files", 528 "icount", 0, 1, &enable); 529 530 retval = ext2fs_get_num_dirs(ctx->fs, &num_dirs); 531 if (retval) 532 num_dirs = 1024; /* Guess */ 533 534 if (!enable || !tdb_dir || access(tdb_dir, W_OK) || 535 (threshold && num_dirs <= threshold)) 536 return; 537 538 retval = ext2fs_create_icount_tdb(ctx->fs, tdb_dir, flags, ret); 539 if (retval) 540 *ret = 0; 541} 542 543void e2fsck_pass1(e2fsck_t ctx) 544{ 545 int i; 546 __u64 max_sizes; 547 ext2_filsys fs = ctx->fs; 548 ext2_ino_t ino = 0; 549 struct ext2_inode *inode; 550 ext2_inode_scan scan; 551 char *block_buf; 552#ifdef RESOURCE_TRACK 553 struct resource_track rtrack; 554#endif 555 unsigned char frag, fsize; 556 struct problem_context pctx; 557 struct scan_callback_struct scan_struct; 558 struct ext2_super_block *sb = ctx->fs->super; 559 const char *old_op; 560 unsigned int save_type; 561 int imagic_fs, extent_fs; 562 int busted_fs_time = 0; 563 int inode_size; 564 565 init_resource_track(&rtrack, ctx->fs->io); 566 clear_problem_context(&pctx); 567 568 if (!(ctx->options & E2F_OPT_PREEN)) 569 fix_problem(ctx, PR_1_PASS_HEADER, &pctx); 570 571 if ((fs->super->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX) && 572 !(ctx->options & E2F_OPT_NO)) { 573 if (ext2fs_u32_list_create(&ctx->dirs_to_hash, 50)) 574 ctx->dirs_to_hash = 0; 575 } 576 577#ifdef MTRACE 578 mtrace_print("Pass 1"); 579#endif 580 581#define EXT2_BPP(bits) (1ULL << ((bits) - 2)) 582 583 for (i = EXT2_MIN_BLOCK_LOG_SIZE; i <= EXT2_MAX_BLOCK_LOG_SIZE; i++) { 584 max_sizes = EXT2_NDIR_BLOCKS + EXT2_BPP(i); 585 max_sizes = max_sizes + EXT2_BPP(i) * EXT2_BPP(i); 586 max_sizes = max_sizes + EXT2_BPP(i) * EXT2_BPP(i) * EXT2_BPP(i); 587 max_sizes = (max_sizes * (1UL << i)); 588 ext2_max_sizes[i - EXT2_MIN_BLOCK_LOG_SIZE] = max_sizes; 589 } 590#undef EXT2_BPP 591 592 imagic_fs = (sb->s_feature_compat & EXT2_FEATURE_COMPAT_IMAGIC_INODES); 593 extent_fs = (sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_EXTENTS); 594 595 /* 596 * Allocate bitmaps structures 597 */ 598 pctx.errcode = e2fsck_allocate_inode_bitmap(fs, _("in-use inode map"), 599 EXT2FS_BMAP64_RBTREE, 600 "inode_used_map", 601 &ctx->inode_used_map); 602 if (pctx.errcode) { 603 pctx.num = 1; 604 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx); 605 ctx->flags |= E2F_FLAG_ABORT; 606 return; 607 } 608 pctx.errcode = e2fsck_allocate_inode_bitmap(fs, 609 _("directory inode map"), 610 EXT2FS_BMAP64_AUTODIR, 611 "inode_dir_map", &ctx->inode_dir_map); 612 if (pctx.errcode) { 613 pctx.num = 2; 614 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx); 615 ctx->flags |= E2F_FLAG_ABORT; 616 return; 617 } 618 pctx.errcode = e2fsck_allocate_inode_bitmap(fs, 619 _("regular file inode map"), EXT2FS_BMAP64_RBTREE, 620 "inode_reg_map", &ctx->inode_reg_map); 621 if (pctx.errcode) { 622 pctx.num = 6; 623 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx); 624 ctx->flags |= E2F_FLAG_ABORT; 625 return; 626 } 627 pctx.errcode = e2fsck_allocate_subcluster_bitmap(fs, 628 _("in-use block map"), EXT2FS_BMAP64_RBTREE, 629 "block_found_map", &ctx->block_found_map); 630 if (pctx.errcode) { 631 pctx.num = 1; 632 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, &pctx); 633 ctx->flags |= E2F_FLAG_ABORT; 634 return; 635 } 636 e2fsck_setup_tdb_icount(ctx, 0, &ctx->inode_link_info); 637 if (!ctx->inode_link_info) { 638 e2fsck_set_bitmap_type(fs, EXT2FS_BMAP64_RBTREE, 639 "inode_link_info", &save_type); 640 pctx.errcode = ext2fs_create_icount2(fs, 0, 0, 0, 641 &ctx->inode_link_info); 642 fs->default_bitmap_type = save_type; 643 } 644 645 if (pctx.errcode) { 646 fix_problem(ctx, PR_1_ALLOCATE_ICOUNT, &pctx); 647 ctx->flags |= E2F_FLAG_ABORT; 648 return; 649 } 650 inode_size = EXT2_INODE_SIZE(fs->super); 651 inode = (struct ext2_inode *) 652 e2fsck_allocate_memory(ctx, inode_size, "scratch inode"); 653 654 inodes_to_process = (struct process_inode_block *) 655 e2fsck_allocate_memory(ctx, 656 (ctx->process_inode_size * 657 sizeof(struct process_inode_block)), 658 "array of inodes to process"); 659 process_inode_count = 0; 660 661 pctx.errcode = ext2fs_init_dblist(fs, 0); 662 if (pctx.errcode) { 663 fix_problem(ctx, PR_1_ALLOCATE_DBCOUNT, &pctx); 664 ctx->flags |= E2F_FLAG_ABORT; 665 ext2fs_free_mem(&inode); 666 return; 667 } 668 669 /* 670 * If the last orphan field is set, clear it, since the pass1 671 * processing will automatically find and clear the orphans. 672 * In the future, we may want to try using the last_orphan 673 * linked list ourselves, but for now, we clear it so that the 674 * ext3 mount code won't get confused. 675 */ 676 if (!(ctx->options & E2F_OPT_READONLY)) { 677 if (fs->super->s_last_orphan) { 678 fs->super->s_last_orphan = 0; 679 ext2fs_mark_super_dirty(fs); 680 } 681 } 682 683 mark_table_blocks(ctx); 684 pctx.errcode = ext2fs_convert_subcluster_bitmap(fs, 685 &ctx->block_found_map); 686 if (pctx.errcode) { 687 fix_problem(ctx, PR_1_CONVERT_SUBCLUSTER, &pctx); 688 ctx->flags |= E2F_FLAG_ABORT; 689 ext2fs_free_mem(&inode); 690 return; 691 } 692 block_buf = (char *) e2fsck_allocate_memory(ctx, fs->blocksize * 3, 693 "block interate buffer"); 694 e2fsck_use_inode_shortcuts(ctx, 1); 695 old_op = ehandler_operation(_("opening inode scan")); 696 pctx.errcode = ext2fs_open_inode_scan(fs, ctx->inode_buffer_blocks, 697 &scan); 698 ehandler_operation(old_op); 699 if (pctx.errcode) { 700 fix_problem(ctx, PR_1_ISCAN_ERROR, &pctx); 701 ctx->flags |= E2F_FLAG_ABORT; 702 ext2fs_free_mem(&block_buf); 703 ext2fs_free_mem(&inode); 704 return; 705 } 706 ext2fs_inode_scan_flags(scan, EXT2_SF_SKIP_MISSING_ITABLE, 0); 707 ctx->stashed_inode = inode; 708 scan_struct.ctx = ctx; 709 scan_struct.block_buf = block_buf; 710 ext2fs_set_inode_callback(scan, scan_callback, &scan_struct); 711 if (ctx->progress) 712 if ((ctx->progress)(ctx, 1, 0, ctx->fs->group_desc_count)) 713 return; 714 if ((fs->super->s_wtime < fs->super->s_inodes_count) || 715 (fs->super->s_mtime < fs->super->s_inodes_count)) 716 busted_fs_time = 1; 717 718 if ((fs->super->s_feature_incompat & EXT4_FEATURE_INCOMPAT_MMP) && 719 !(fs->super->s_mmp_block <= fs->super->s_first_data_block || 720 fs->super->s_mmp_block >= fs->super->s_blocks_count)) 721 ext2fs_mark_block_bitmap2(ctx->block_found_map, 722 fs->super->s_mmp_block); 723 724 while (1) { 725 if (ino % (fs->super->s_inodes_per_group * 4) == 1) { 726 if (e2fsck_mmp_update(fs)) 727 fatal_error(ctx, 0); 728 } 729 old_op = ehandler_operation(_("getting next inode from scan")); 730 pctx.errcode = ext2fs_get_next_inode_full(scan, &ino, 731 inode, inode_size); 732 ehandler_operation(old_op); 733 if (ctx->flags & E2F_FLAG_SIGNAL_MASK) 734 return; 735 if (pctx.errcode == EXT2_ET_BAD_BLOCK_IN_INODE_TABLE) { 736 if (!ctx->inode_bb_map) 737 alloc_bb_map(ctx); 738 ext2fs_mark_inode_bitmap2(ctx->inode_bb_map, ino); 739 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino); 740 continue; 741 } 742 if (pctx.errcode) { 743 fix_problem(ctx, PR_1_ISCAN_ERROR, &pctx); 744 ctx->flags |= E2F_FLAG_ABORT; 745 return; 746 } 747 if (!ino) 748 break; 749 pctx.ino = ino; 750 pctx.inode = inode; 751 ctx->stashed_ino = ino; 752 if (inode->i_links_count) { 753 pctx.errcode = ext2fs_icount_store(ctx->inode_link_info, 754 ino, inode->i_links_count); 755 if (pctx.errcode) { 756 pctx.num = inode->i_links_count; 757 fix_problem(ctx, PR_1_ICOUNT_STORE, &pctx); 758 ctx->flags |= E2F_FLAG_ABORT; 759 return; 760 } 761 } 762 763 /* 764 * Test for incorrect extent flag settings. 765 * 766 * On big-endian machines we must be careful: 767 * When the inode is read, the i_block array is not swapped 768 * if the extent flag is set. Therefore if we are testing 769 * for or fixing a wrongly-set flag, we must potentially 770 * (un)swap before testing, or after fixing. 771 */ 772 773 /* 774 * In this case the extents flag was set when read, so 775 * extent_header_verify is ok. If the inode is cleared, 776 * no need to swap... so no extra swapping here. 777 */ 778 if ((inode->i_flags & EXT4_EXTENTS_FL) && !extent_fs && 779 (inode->i_links_count || (ino == EXT2_BAD_INO) || 780 (ino == EXT2_ROOT_INO) || (ino == EXT2_JOURNAL_INO))) { 781 if ((ext2fs_extent_header_verify(inode->i_block, 782 sizeof(inode->i_block)) == 0) && 783 fix_problem(ctx, PR_1_EXTENT_FEATURE, &pctx)) { 784 sb->s_feature_incompat |= EXT3_FEATURE_INCOMPAT_EXTENTS; 785 ext2fs_mark_super_dirty(fs); 786 extent_fs = 1; 787 } else if (fix_problem(ctx, PR_1_EXTENTS_SET, &pctx)) { 788 clear_inode: 789 e2fsck_clear_inode(ctx, ino, inode, 0, "pass1"); 790 if (ino == EXT2_BAD_INO) 791 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, 792 ino); 793 continue; 794 } 795 } 796 797 /* 798 * For big-endian machines: 799 * If the inode didn't have the extents flag set when it 800 * was read, then the i_blocks array was swapped. To test 801 * as an extents header, we must swap it back first. 802 * IF we then set the extents flag, the entire i_block 803 * array must be un/re-swapped to make it proper extents data. 804 */ 805 if (extent_fs && !(inode->i_flags & EXT4_EXTENTS_FL) && 806 (inode->i_links_count || (ino == EXT2_BAD_INO) || 807 (ino == EXT2_ROOT_INO) || (ino == EXT2_JOURNAL_INO)) && 808 (LINUX_S_ISREG(inode->i_mode) || 809 LINUX_S_ISDIR(inode->i_mode))) { 810 void *ehp; 811#ifdef WORDS_BIGENDIAN 812 __u32 tmp_block[EXT2_N_BLOCKS]; 813 814 for (i = 0; i < EXT2_N_BLOCKS; i++) 815 tmp_block[i] = ext2fs_swab32(inode->i_block[i]); 816 ehp = tmp_block; 817#else 818 ehp = inode->i_block; 819#endif 820 if ((ext2fs_extent_header_verify(ehp, 821 sizeof(inode->i_block)) == 0) && 822 (fix_problem(ctx, PR_1_UNSET_EXTENT_FL, &pctx))) { 823 inode->i_flags |= EXT4_EXTENTS_FL; 824#ifdef WORDS_BIGENDIAN 825 memcpy(inode->i_block, tmp_block, 826 sizeof(inode->i_block)); 827#endif 828 e2fsck_write_inode(ctx, ino, inode, "pass1"); 829 } 830 } 831 832 if (ino == EXT2_BAD_INO) { 833 struct process_block_struct pb; 834 835 if ((inode->i_mode || inode->i_uid || inode->i_gid || 836 inode->i_links_count || inode->i_file_acl) && 837 fix_problem(ctx, PR_1_INVALID_BAD_INODE, &pctx)) { 838 memset(inode, 0, sizeof(struct ext2_inode)); 839 e2fsck_write_inode(ctx, ino, inode, 840 "clear bad inode"); 841 } 842 843 pctx.errcode = ext2fs_copy_bitmap(ctx->block_found_map, 844 &pb.fs_meta_blocks); 845 if (pctx.errcode) { 846 pctx.num = 4; 847 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, &pctx); 848 ctx->flags |= E2F_FLAG_ABORT; 849 return; 850 } 851 pb.ino = EXT2_BAD_INO; 852 pb.num_blocks = pb.last_block = 0; 853 pb.last_db_block = -1; 854 pb.num_illegal_blocks = 0; 855 pb.suppress = 0; pb.clear = 0; pb.is_dir = 0; 856 pb.is_reg = 0; pb.fragmented = 0; pb.bbcheck = 0; 857 pb.inode = inode; 858 pb.pctx = &pctx; 859 pb.ctx = ctx; 860 pctx.errcode = ext2fs_block_iterate3(fs, ino, 0, 861 block_buf, process_bad_block, &pb); 862 ext2fs_free_block_bitmap(pb.fs_meta_blocks); 863 if (pctx.errcode) { 864 fix_problem(ctx, PR_1_BLOCK_ITERATE, &pctx); 865 ctx->flags |= E2F_FLAG_ABORT; 866 return; 867 } 868 if (pb.bbcheck) 869 if (!fix_problem(ctx, PR_1_BBINODE_BAD_METABLOCK_PROMPT, &pctx)) { 870 ctx->flags |= E2F_FLAG_ABORT; 871 return; 872 } 873 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino); 874 clear_problem_context(&pctx); 875 continue; 876 } else if (ino == EXT2_ROOT_INO) { 877 /* 878 * Make sure the root inode is a directory; if 879 * not, offer to clear it. It will be 880 * regnerated in pass #3. 881 */ 882 if (!LINUX_S_ISDIR(inode->i_mode)) { 883 if (fix_problem(ctx, PR_1_ROOT_NO_DIR, &pctx)) 884 goto clear_inode; 885 } 886 /* 887 * If dtime is set, offer to clear it. mke2fs 888 * version 0.2b created filesystems with the 889 * dtime field set for the root and lost+found 890 * directories. We won't worry about 891 * /lost+found, since that can be regenerated 892 * easily. But we will fix the root directory 893 * as a special case. 894 */ 895 if (inode->i_dtime && inode->i_links_count) { 896 if (fix_problem(ctx, PR_1_ROOT_DTIME, &pctx)) { 897 inode->i_dtime = 0; 898 e2fsck_write_inode(ctx, ino, inode, 899 "pass1"); 900 } 901 } 902 } else if (ino == EXT2_JOURNAL_INO) { 903 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino); 904 if (fs->super->s_journal_inum == EXT2_JOURNAL_INO) { 905 if (!LINUX_S_ISREG(inode->i_mode) && 906 fix_problem(ctx, PR_1_JOURNAL_BAD_MODE, 907 &pctx)) { 908 inode->i_mode = LINUX_S_IFREG; 909 e2fsck_write_inode(ctx, ino, inode, 910 "pass1"); 911 } 912 check_blocks(ctx, &pctx, block_buf); 913 continue; 914 } 915 if ((inode->i_links_count || 916 inode->i_blocks || inode->i_block[0]) && 917 fix_problem(ctx, PR_1_JOURNAL_INODE_NOT_CLEAR, 918 &pctx)) { 919 memset(inode, 0, inode_size); 920 ext2fs_icount_store(ctx->inode_link_info, 921 ino, 0); 922 e2fsck_write_inode_full(ctx, ino, inode, 923 inode_size, "pass1"); 924 } 925 } else if ((ino == EXT4_USR_QUOTA_INO) || 926 (ino == EXT4_GRP_QUOTA_INO)) { 927 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino); 928 if ((fs->super->s_feature_ro_compat & 929 EXT4_FEATURE_RO_COMPAT_QUOTA) && 930 ((fs->super->s_usr_quota_inum == ino) || 931 (fs->super->s_grp_quota_inum == ino))) { 932 if (!LINUX_S_ISREG(inode->i_mode) && 933 fix_problem(ctx, PR_1_QUOTA_BAD_MODE, 934 &pctx)) { 935 inode->i_mode = LINUX_S_IFREG; 936 e2fsck_write_inode(ctx, ino, inode, 937 "pass1"); 938 } 939 check_blocks(ctx, &pctx, block_buf); 940 continue; 941 } 942 if ((inode->i_links_count || 943 inode->i_blocks || inode->i_block[0]) && 944 fix_problem(ctx, PR_1_QUOTA_INODE_NOT_CLEAR, 945 &pctx)) { 946 memset(inode, 0, inode_size); 947 ext2fs_icount_store(ctx->inode_link_info, 948 ino, 0); 949 e2fsck_write_inode_full(ctx, ino, inode, 950 inode_size, "pass1"); 951 } 952 } else if (ino < EXT2_FIRST_INODE(fs->super)) { 953 int problem = 0; 954 955 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino); 956 if (ino == EXT2_BOOT_LOADER_INO) { 957 if (LINUX_S_ISDIR(inode->i_mode)) 958 problem = PR_1_RESERVED_BAD_MODE; 959 } else if (ino == EXT2_RESIZE_INO) { 960 if (inode->i_mode && 961 !LINUX_S_ISREG(inode->i_mode)) 962 problem = PR_1_RESERVED_BAD_MODE; 963 } else { 964 if (inode->i_mode != 0) 965 problem = PR_1_RESERVED_BAD_MODE; 966 } 967 if (problem) { 968 if (fix_problem(ctx, problem, &pctx)) { 969 inode->i_mode = 0; 970 e2fsck_write_inode(ctx, ino, inode, 971 "pass1"); 972 } 973 } 974 check_blocks(ctx, &pctx, block_buf); 975 continue; 976 } 977 978 /* 979 * Check for inodes who might have been part of the 980 * orphaned list linked list. They should have gotten 981 * dealt with by now, unless the list had somehow been 982 * corrupted. 983 * 984 * FIXME: In the future, inodes which are still in use 985 * (and which are therefore) pending truncation should 986 * be handled specially. Right now we just clear the 987 * dtime field, and the normal e2fsck handling of 988 * inodes where i_size and the inode blocks are 989 * inconsistent is to fix i_size, instead of releasing 990 * the extra blocks. This won't catch the inodes that 991 * was at the end of the orphan list, but it's better 992 * than nothing. The right answer is that there 993 * shouldn't be any bugs in the orphan list handling. :-) 994 */ 995 if (inode->i_dtime && !busted_fs_time && 996 inode->i_dtime < ctx->fs->super->s_inodes_count) { 997 if (fix_problem(ctx, PR_1_LOW_DTIME, &pctx)) { 998 inode->i_dtime = inode->i_links_count ? 999 0 : ctx->now; 1000 e2fsck_write_inode(ctx, ino, inode, 1001 "pass1"); 1002 } 1003 } 1004 1005 /* 1006 * This code assumes that deleted inodes have 1007 * i_links_count set to 0. 1008 */ 1009 if (!inode->i_links_count) { 1010 if (!inode->i_dtime && inode->i_mode) { 1011 if (fix_problem(ctx, 1012 PR_1_ZERO_DTIME, &pctx)) { 1013 inode->i_dtime = ctx->now; 1014 e2fsck_write_inode(ctx, ino, inode, 1015 "pass1"); 1016 } 1017 } 1018 continue; 1019 } 1020 /* 1021 * n.b. 0.3c ext2fs code didn't clear i_links_count for 1022 * deleted files. Oops. 1023 * 1024 * Since all new ext2 implementations get this right, 1025 * we now assume that the case of non-zero 1026 * i_links_count and non-zero dtime means that we 1027 * should keep the file, not delete it. 1028 * 1029 */ 1030 if (inode->i_dtime) { 1031 if (fix_problem(ctx, PR_1_SET_DTIME, &pctx)) { 1032 inode->i_dtime = 0; 1033 e2fsck_write_inode(ctx, ino, inode, "pass1"); 1034 } 1035 } 1036 1037 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino); 1038 switch (fs->super->s_creator_os) { 1039 case EXT2_OS_HURD: 1040 frag = inode->osd2.hurd2.h_i_frag; 1041 fsize = inode->osd2.hurd2.h_i_fsize; 1042 break; 1043 default: 1044 frag = fsize = 0; 1045 } 1046 1047 if (inode->i_faddr || frag || fsize || 1048 (LINUX_S_ISDIR(inode->i_mode) && inode->i_dir_acl)) 1049 mark_inode_bad(ctx, ino); 1050 if (!(fs->super->s_feature_incompat & 1051 EXT4_FEATURE_INCOMPAT_64BIT) && 1052 inode->osd2.linux2.l_i_file_acl_high != 0) 1053 mark_inode_bad(ctx, ino); 1054 if ((fs->super->s_creator_os == EXT2_OS_LINUX) && 1055 !(fs->super->s_feature_ro_compat & 1056 EXT4_FEATURE_RO_COMPAT_HUGE_FILE) && 1057 (inode->osd2.linux2.l_i_blocks_hi != 0)) 1058 mark_inode_bad(ctx, ino); 1059 if (inode->i_flags & EXT2_IMAGIC_FL) { 1060 if (imagic_fs) { 1061 if (!ctx->inode_imagic_map) 1062 alloc_imagic_map(ctx); 1063 ext2fs_mark_inode_bitmap2(ctx->inode_imagic_map, 1064 ino); 1065 } else { 1066 if (fix_problem(ctx, PR_1_SET_IMAGIC, &pctx)) { 1067 inode->i_flags &= ~EXT2_IMAGIC_FL; 1068 e2fsck_write_inode(ctx, ino, 1069 inode, "pass1"); 1070 } 1071 } 1072 } 1073 1074 check_inode_extra_space(ctx, &pctx); 1075 check_is_really_dir(ctx, &pctx, block_buf); 1076 1077 /* 1078 * ext2fs_inode_has_valid_blocks2 does not actually look 1079 * at i_block[] values, so not endian-sensitive here. 1080 */ 1081 if (extent_fs && (inode->i_flags & EXT4_EXTENTS_FL) && 1082 LINUX_S_ISLNK(inode->i_mode) && 1083 !ext2fs_inode_has_valid_blocks2(fs, inode) && 1084 fix_problem(ctx, PR_1_FAST_SYMLINK_EXTENT_FL, &pctx)) { 1085 inode->i_flags &= ~EXT4_EXTENTS_FL; 1086 e2fsck_write_inode(ctx, ino, inode, "pass1"); 1087 } 1088 1089 if (LINUX_S_ISDIR(inode->i_mode)) { 1090 ext2fs_mark_inode_bitmap2(ctx->inode_dir_map, ino); 1091 e2fsck_add_dir_info(ctx, ino, 0); 1092 ctx->fs_directory_count++; 1093 } else if (LINUX_S_ISREG (inode->i_mode)) { 1094 ext2fs_mark_inode_bitmap2(ctx->inode_reg_map, ino); 1095 ctx->fs_regular_count++; 1096 } else if (LINUX_S_ISCHR (inode->i_mode) && 1097 e2fsck_pass1_check_device_inode(fs, inode)) { 1098 check_immutable(ctx, &pctx); 1099 check_size(ctx, &pctx); 1100 ctx->fs_chardev_count++; 1101 } else if (LINUX_S_ISBLK (inode->i_mode) && 1102 e2fsck_pass1_check_device_inode(fs, inode)) { 1103 check_immutable(ctx, &pctx); 1104 check_size(ctx, &pctx); 1105 ctx->fs_blockdev_count++; 1106 } else if (LINUX_S_ISLNK (inode->i_mode) && 1107 e2fsck_pass1_check_symlink(fs, ino, inode, 1108 block_buf)) { 1109 check_immutable(ctx, &pctx); 1110 ctx->fs_symlinks_count++; 1111 if (ext2fs_inode_data_blocks(fs, inode) == 0) { 1112 ctx->fs_fast_symlinks_count++; 1113 check_blocks(ctx, &pctx, block_buf); 1114 continue; 1115 } 1116 } 1117 else if (LINUX_S_ISFIFO (inode->i_mode) && 1118 e2fsck_pass1_check_device_inode(fs, inode)) { 1119 check_immutable(ctx, &pctx); 1120 check_size(ctx, &pctx); 1121 ctx->fs_fifo_count++; 1122 } else if ((LINUX_S_ISSOCK (inode->i_mode)) && 1123 e2fsck_pass1_check_device_inode(fs, inode)) { 1124 check_immutable(ctx, &pctx); 1125 check_size(ctx, &pctx); 1126 ctx->fs_sockets_count++; 1127 } else 1128 mark_inode_bad(ctx, ino); 1129 if (!(inode->i_flags & EXT4_EXTENTS_FL)) { 1130 if (inode->i_block[EXT2_IND_BLOCK]) 1131 ctx->fs_ind_count++; 1132 if (inode->i_block[EXT2_DIND_BLOCK]) 1133 ctx->fs_dind_count++; 1134 if (inode->i_block[EXT2_TIND_BLOCK]) 1135 ctx->fs_tind_count++; 1136 } 1137 if (!(inode->i_flags & EXT4_EXTENTS_FL) && 1138 (inode->i_block[EXT2_IND_BLOCK] || 1139 inode->i_block[EXT2_DIND_BLOCK] || 1140 inode->i_block[EXT2_TIND_BLOCK] || 1141 ext2fs_file_acl_block(fs, inode))) { 1142 inodes_to_process[process_inode_count].ino = ino; 1143 inodes_to_process[process_inode_count].inode = *inode; 1144 process_inode_count++; 1145 } else 1146 check_blocks(ctx, &pctx, block_buf); 1147 1148 if (ctx->flags & E2F_FLAG_SIGNAL_MASK) 1149 return; 1150 1151 if (process_inode_count >= ctx->process_inode_size) { 1152 process_inodes(ctx, block_buf); 1153 1154 if (ctx->flags & E2F_FLAG_SIGNAL_MASK) 1155 return; 1156 } 1157 } 1158 process_inodes(ctx, block_buf); 1159 ext2fs_close_inode_scan(scan); 1160 1161 /* 1162 * If any extended attribute blocks' reference counts need to 1163 * be adjusted, either up (ctx->refcount_extra), or down 1164 * (ctx->refcount), then fix them. 1165 */ 1166 if (ctx->refcount) { 1167 adjust_extattr_refcount(ctx, ctx->refcount, block_buf, -1); 1168 ea_refcount_free(ctx->refcount); 1169 ctx->refcount = 0; 1170 } 1171 if (ctx->refcount_extra) { 1172 adjust_extattr_refcount(ctx, ctx->refcount_extra, 1173 block_buf, +1); 1174 ea_refcount_free(ctx->refcount_extra); 1175 ctx->refcount_extra = 0; 1176 } 1177 1178 if (ctx->invalid_bitmaps) 1179 handle_fs_bad_blocks(ctx); 1180 1181 /* We don't need the block_ea_map any more */ 1182 if (ctx->block_ea_map) { 1183 ext2fs_free_block_bitmap(ctx->block_ea_map); 1184 ctx->block_ea_map = 0; 1185 } 1186 1187 if (ctx->flags & E2F_FLAG_RESIZE_INODE) { 1188 ext2fs_block_bitmap save_bmap; 1189 1190 save_bmap = fs->block_map; 1191 fs->block_map = ctx->block_found_map; 1192 clear_problem_context(&pctx); 1193 pctx.errcode = ext2fs_create_resize_inode(fs); 1194 if (pctx.errcode) { 1195 if (!fix_problem(ctx, PR_1_RESIZE_INODE_CREATE, 1196 &pctx)) { 1197 ctx->flags |= E2F_FLAG_ABORT; 1198 return; 1199 } 1200 pctx.errcode = 0; 1201 } 1202 if (!pctx.errcode) { 1203 e2fsck_read_inode(ctx, EXT2_RESIZE_INO, inode, 1204 "recreate inode"); 1205 inode->i_mtime = ctx->now; 1206 e2fsck_write_inode(ctx, EXT2_RESIZE_INO, inode, 1207 "recreate inode"); 1208 } 1209 fs->block_map = save_bmap; 1210 ctx->flags &= ~E2F_FLAG_RESIZE_INODE; 1211 } 1212 1213 if (ctx->flags & E2F_FLAG_RESTART) { 1214 /* 1215 * Only the master copy of the superblock and block 1216 * group descriptors are going to be written during a 1217 * restart, so set the superblock to be used to be the 1218 * master superblock. 1219 */ 1220 ctx->use_superblock = 0; 1221 unwind_pass1(fs); 1222 goto endit; 1223 } 1224 1225 if (ctx->block_dup_map) { 1226 if (ctx->options & E2F_OPT_PREEN) { 1227 clear_problem_context(&pctx); 1228 fix_problem(ctx, PR_1_DUP_BLOCKS_PREENSTOP, &pctx); 1229 } 1230 e2fsck_pass1_dupblocks(ctx, block_buf); 1231 } 1232 ext2fs_free_mem(&inodes_to_process); 1233endit: 1234 e2fsck_use_inode_shortcuts(ctx, 0); 1235 1236 ext2fs_free_mem(&block_buf); 1237 ext2fs_free_mem(&inode); 1238 1239 print_resource_track(ctx, _("Pass 1"), &rtrack, ctx->fs->io); 1240} 1241 1242/* 1243 * When the inode_scan routines call this callback at the end of the 1244 * glock group, call process_inodes. 1245 */ 1246static errcode_t scan_callback(ext2_filsys fs, 1247 ext2_inode_scan scan EXT2FS_ATTR((unused)), 1248 dgrp_t group, void * priv_data) 1249{ 1250 struct scan_callback_struct *scan_struct; 1251 e2fsck_t ctx; 1252 1253 scan_struct = (struct scan_callback_struct *) priv_data; 1254 ctx = scan_struct->ctx; 1255 1256 process_inodes((e2fsck_t) fs->priv_data, scan_struct->block_buf); 1257 1258 if (ctx->progress) 1259 if ((ctx->progress)(ctx, 1, group+1, 1260 ctx->fs->group_desc_count)) 1261 return EXT2_ET_CANCEL_REQUESTED; 1262 1263 return 0; 1264} 1265 1266/* 1267 * Process the inodes in the "inodes to process" list. 1268 */ 1269static void process_inodes(e2fsck_t ctx, char *block_buf) 1270{ 1271 int i; 1272 struct ext2_inode *old_stashed_inode; 1273 ext2_ino_t old_stashed_ino; 1274 const char *old_operation; 1275 char buf[80]; 1276 struct problem_context pctx; 1277 1278#if 0 1279 printf("begin process_inodes: "); 1280#endif 1281 if (process_inode_count == 0) 1282 return; 1283 old_operation = ehandler_operation(0); 1284 old_stashed_inode = ctx->stashed_inode; 1285 old_stashed_ino = ctx->stashed_ino; 1286 qsort(inodes_to_process, process_inode_count, 1287 sizeof(struct process_inode_block), process_inode_cmp); 1288 clear_problem_context(&pctx); 1289 for (i=0; i < process_inode_count; i++) { 1290 pctx.inode = ctx->stashed_inode = &inodes_to_process[i].inode; 1291 pctx.ino = ctx->stashed_ino = inodes_to_process[i].ino; 1292 1293#if 0 1294 printf("%u ", pctx.ino); 1295#endif 1296 sprintf(buf, _("reading indirect blocks of inode %u"), 1297 pctx.ino); 1298 ehandler_operation(buf); 1299 check_blocks(ctx, &pctx, block_buf); 1300 if (ctx->flags & E2F_FLAG_SIGNAL_MASK) 1301 break; 1302 } 1303 ctx->stashed_inode = old_stashed_inode; 1304 ctx->stashed_ino = old_stashed_ino; 1305 process_inode_count = 0; 1306#if 0 1307 printf("end process inodes\n"); 1308#endif 1309 ehandler_operation(old_operation); 1310} 1311 1312static EXT2_QSORT_TYPE process_inode_cmp(const void *a, const void *b) 1313{ 1314 const struct process_inode_block *ib_a = 1315 (const struct process_inode_block *) a; 1316 const struct process_inode_block *ib_b = 1317 (const struct process_inode_block *) b; 1318 int ret; 1319 1320 ret = (ib_a->inode.i_block[EXT2_IND_BLOCK] - 1321 ib_b->inode.i_block[EXT2_IND_BLOCK]); 1322 if (ret == 0) 1323 /* 1324 * We only call process_inodes() for non-extent 1325 * inodes, so it's OK to pass NULL to 1326 * ext2fs_file_acl_block() here. 1327 */ 1328 ret = ext2fs_file_acl_block(0, &(ib_a->inode)) - 1329 ext2fs_file_acl_block(0, &(ib_b->inode)); 1330 if (ret == 0) 1331 ret = ib_a->ino - ib_b->ino; 1332 return ret; 1333} 1334 1335/* 1336 * Mark an inode as being bad in some what 1337 */ 1338static void mark_inode_bad(e2fsck_t ctx, ino_t ino) 1339{ 1340 struct problem_context pctx; 1341 1342 if (!ctx->inode_bad_map) { 1343 clear_problem_context(&pctx); 1344 1345 pctx.errcode = e2fsck_allocate_inode_bitmap(ctx->fs, 1346 _("bad inode map"), EXT2FS_BMAP64_RBTREE, 1347 "inode_bad_map", &ctx->inode_bad_map); 1348 if (pctx.errcode) { 1349 pctx.num = 3; 1350 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx); 1351 /* Should never get here */ 1352 ctx->flags |= E2F_FLAG_ABORT; 1353 return; 1354 } 1355 } 1356 ext2fs_mark_inode_bitmap2(ctx->inode_bad_map, ino); 1357} 1358 1359 1360/* 1361 * This procedure will allocate the inode "bb" (badblock) map table 1362 */ 1363static void alloc_bb_map(e2fsck_t ctx) 1364{ 1365 struct problem_context pctx; 1366 1367 clear_problem_context(&pctx); 1368 pctx.errcode = e2fsck_allocate_inode_bitmap(ctx->fs, 1369 _("inode in bad block map"), EXT2FS_BMAP64_RBTREE, 1370 "inode_bb_map", &ctx->inode_bb_map); 1371 if (pctx.errcode) { 1372 pctx.num = 4; 1373 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx); 1374 /* Should never get here */ 1375 ctx->flags |= E2F_FLAG_ABORT; 1376 return; 1377 } 1378} 1379 1380/* 1381 * This procedure will allocate the inode imagic table 1382 */ 1383static void alloc_imagic_map(e2fsck_t ctx) 1384{ 1385 struct problem_context pctx; 1386 1387 clear_problem_context(&pctx); 1388 pctx.errcode = e2fsck_allocate_inode_bitmap(ctx->fs, 1389 _("imagic inode map"), EXT2FS_BMAP64_RBTREE, 1390 "inode_imagic_map", &ctx->inode_imagic_map); 1391 if (pctx.errcode) { 1392 pctx.num = 5; 1393 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx); 1394 /* Should never get here */ 1395 ctx->flags |= E2F_FLAG_ABORT; 1396 return; 1397 } 1398} 1399 1400/* 1401 * Marks a block as in use, setting the dup_map if it's been set 1402 * already. Called by process_block and process_bad_block. 1403 * 1404 * WARNING: Assumes checks have already been done to make sure block 1405 * is valid. This is true in both process_block and process_bad_block. 1406 */ 1407static _INLINE_ void mark_block_used(e2fsck_t ctx, blk64_t block) 1408{ 1409 struct problem_context pctx; 1410 1411 clear_problem_context(&pctx); 1412 1413 if (ext2fs_fast_test_block_bitmap2(ctx->block_found_map, block)) { 1414 if (!ctx->block_dup_map) { 1415 pctx.errcode = e2fsck_allocate_block_bitmap(ctx->fs, 1416 _("multiply claimed block map"), 1417 EXT2FS_BMAP64_RBTREE, "block_dup_map", 1418 &ctx->block_dup_map); 1419 if (pctx.errcode) { 1420 pctx.num = 3; 1421 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, 1422 &pctx); 1423 /* Should never get here */ 1424 ctx->flags |= E2F_FLAG_ABORT; 1425 return; 1426 } 1427 } 1428 ext2fs_fast_mark_block_bitmap2(ctx->block_dup_map, block); 1429 } else { 1430 ext2fs_fast_mark_block_bitmap2(ctx->block_found_map, block); 1431 } 1432} 1433 1434static _INLINE_ void mark_blocks_used(e2fsck_t ctx, blk64_t block, 1435 unsigned int num) 1436{ 1437 if (ext2fs_test_block_bitmap_range2(ctx->block_found_map, block, num)) 1438 ext2fs_mark_block_bitmap_range2(ctx->block_found_map, block, num); 1439 else 1440 while (num--) 1441 mark_block_used(ctx, block++); 1442} 1443 1444/* 1445 * Adjust the extended attribute block's reference counts at the end 1446 * of pass 1, either by subtracting out references for EA blocks that 1447 * are still referenced in ctx->refcount, or by adding references for 1448 * EA blocks that had extra references as accounted for in 1449 * ctx->refcount_extra. 1450 */ 1451static void adjust_extattr_refcount(e2fsck_t ctx, ext2_refcount_t refcount, 1452 char *block_buf, int adjust_sign) 1453{ 1454 struct ext2_ext_attr_header *header; 1455 struct problem_context pctx; 1456 ext2_filsys fs = ctx->fs; 1457 blk64_t blk; 1458 __u32 should_be; 1459 int count; 1460 1461 clear_problem_context(&pctx); 1462 1463 ea_refcount_intr_begin(refcount); 1464 while (1) { 1465 if ((blk = ea_refcount_intr_next(refcount, &count)) == 0) 1466 break; 1467 pctx.blk = blk; 1468 pctx.errcode = ext2fs_read_ext_attr2(fs, blk, block_buf); 1469 if (pctx.errcode) { 1470 fix_problem(ctx, PR_1_EXTATTR_READ_ABORT, &pctx); 1471 return; 1472 } 1473 header = (struct ext2_ext_attr_header *) block_buf; 1474 pctx.blkcount = header->h_refcount; 1475 should_be = header->h_refcount + adjust_sign * count; 1476 pctx.num = should_be; 1477 if (fix_problem(ctx, PR_1_EXTATTR_REFCOUNT, &pctx)) { 1478 header->h_refcount = should_be; 1479 pctx.errcode = ext2fs_write_ext_attr2(fs, blk, 1480 block_buf); 1481 if (pctx.errcode) { 1482 fix_problem(ctx, PR_1_EXTATTR_WRITE_ABORT, 1483 &pctx); 1484 continue; 1485 } 1486 } 1487 } 1488} 1489 1490/* 1491 * Handle processing the extended attribute blocks 1492 */ 1493static int check_ext_attr(e2fsck_t ctx, struct problem_context *pctx, 1494 char *block_buf) 1495{ 1496 ext2_filsys fs = ctx->fs; 1497 ext2_ino_t ino = pctx->ino; 1498 struct ext2_inode *inode = pctx->inode; 1499 blk64_t blk; 1500 char * end; 1501 struct ext2_ext_attr_header *header; 1502 struct ext2_ext_attr_entry *entry; 1503 int count; 1504 region_t region = 0; 1505 1506 blk = ext2fs_file_acl_block(fs, inode); 1507 if (blk == 0) 1508 return 0; 1509 1510 /* 1511 * If the Extended attribute flag isn't set, then a non-zero 1512 * file acl means that the inode is corrupted. 1513 * 1514 * Or if the extended attribute block is an invalid block, 1515 * then the inode is also corrupted. 1516 */ 1517 if (!(fs->super->s_feature_compat & EXT2_FEATURE_COMPAT_EXT_ATTR) || 1518 (blk < fs->super->s_first_data_block) || 1519 (blk >= ext2fs_blocks_count(fs->super))) { 1520 mark_inode_bad(ctx, ino); 1521 return 0; 1522 } 1523 1524 /* If ea bitmap hasn't been allocated, create it */ 1525 if (!ctx->block_ea_map) { 1526 pctx->errcode = e2fsck_allocate_block_bitmap(fs, 1527 _("ext attr block map"), 1528 EXT2FS_BMAP64_RBTREE, "block_ea_map", 1529 &ctx->block_ea_map); 1530 if (pctx->errcode) { 1531 pctx->num = 2; 1532 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, pctx); 1533 ctx->flags |= E2F_FLAG_ABORT; 1534 return 0; 1535 } 1536 } 1537 1538 /* Create the EA refcount structure if necessary */ 1539 if (!ctx->refcount) { 1540 pctx->errcode = ea_refcount_create(0, &ctx->refcount); 1541 if (pctx->errcode) { 1542 pctx->num = 1; 1543 fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx); 1544 ctx->flags |= E2F_FLAG_ABORT; 1545 return 0; 1546 } 1547 } 1548 1549#if 0 1550 /* Debugging text */ 1551 printf("Inode %u has EA block %u\n", ino, blk); 1552#endif 1553 1554 /* Have we seen this EA block before? */ 1555 if (ext2fs_fast_test_block_bitmap2(ctx->block_ea_map, blk)) { 1556 if (ea_refcount_decrement(ctx->refcount, blk, 0) == 0) 1557 return 1; 1558 /* Ooops, this EA was referenced more than it stated */ 1559 if (!ctx->refcount_extra) { 1560 pctx->errcode = ea_refcount_create(0, 1561 &ctx->refcount_extra); 1562 if (pctx->errcode) { 1563 pctx->num = 2; 1564 fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx); 1565 ctx->flags |= E2F_FLAG_ABORT; 1566 return 0; 1567 } 1568 } 1569 ea_refcount_increment(ctx->refcount_extra, blk, 0); 1570 return 1; 1571 } 1572 1573 /* 1574 * OK, we haven't seen this EA block yet. So we need to 1575 * validate it 1576 */ 1577 pctx->blk = blk; 1578 pctx->errcode = ext2fs_read_ext_attr2(fs, blk, block_buf); 1579 if (pctx->errcode && fix_problem(ctx, PR_1_READ_EA_BLOCK, pctx)) 1580 goto clear_extattr; 1581 header = (struct ext2_ext_attr_header *) block_buf; 1582 pctx->blk = ext2fs_file_acl_block(fs, inode); 1583 if (((ctx->ext_attr_ver == 1) && 1584 (header->h_magic != EXT2_EXT_ATTR_MAGIC_v1)) || 1585 ((ctx->ext_attr_ver == 2) && 1586 (header->h_magic != EXT2_EXT_ATTR_MAGIC))) { 1587 if (fix_problem(ctx, PR_1_BAD_EA_BLOCK, pctx)) 1588 goto clear_extattr; 1589 } 1590 1591 if (header->h_blocks != 1) { 1592 if (fix_problem(ctx, PR_1_EA_MULTI_BLOCK, pctx)) 1593 goto clear_extattr; 1594 } 1595 1596 region = region_create(0, fs->blocksize); 1597 if (!region) { 1598 fix_problem(ctx, PR_1_EA_ALLOC_REGION_ABORT, pctx); 1599 ctx->flags |= E2F_FLAG_ABORT; 1600 return 0; 1601 } 1602 if (region_allocate(region, 0, sizeof(struct ext2_ext_attr_header))) { 1603 if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx)) 1604 goto clear_extattr; 1605 } 1606 1607 entry = (struct ext2_ext_attr_entry *)(header+1); 1608 end = block_buf + fs->blocksize; 1609 while ((char *)entry < end && *(__u32 *)entry) { 1610 __u32 hash; 1611 1612 if (region_allocate(region, (char *)entry - (char *)header, 1613 EXT2_EXT_ATTR_LEN(entry->e_name_len))) { 1614 if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx)) 1615 goto clear_extattr; 1616 break; 1617 } 1618 if ((ctx->ext_attr_ver == 1 && 1619 (entry->e_name_len == 0 || entry->e_name_index != 0)) || 1620 (ctx->ext_attr_ver == 2 && 1621 entry->e_name_index == 0)) { 1622 if (fix_problem(ctx, PR_1_EA_BAD_NAME, pctx)) 1623 goto clear_extattr; 1624 break; 1625 } 1626 if (entry->e_value_block != 0) { 1627 if (fix_problem(ctx, PR_1_EA_BAD_VALUE, pctx)) 1628 goto clear_extattr; 1629 } 1630 if (entry->e_value_offs + entry->e_value_size > fs->blocksize) { 1631 if (fix_problem(ctx, PR_1_EA_BAD_VALUE, pctx)) 1632 goto clear_extattr; 1633 break; 1634 } 1635 if (entry->e_value_size && 1636 region_allocate(region, entry->e_value_offs, 1637 EXT2_EXT_ATTR_SIZE(entry->e_value_size))) { 1638 if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx)) 1639 goto clear_extattr; 1640 } 1641 1642 hash = ext2fs_ext_attr_hash_entry(entry, block_buf + 1643 entry->e_value_offs); 1644 1645 if (entry->e_hash != hash) { 1646 pctx->num = entry->e_hash; 1647 if (fix_problem(ctx, PR_1_ATTR_HASH, pctx)) 1648 goto clear_extattr; 1649 entry->e_hash = hash; 1650 } 1651 1652 entry = EXT2_EXT_ATTR_NEXT(entry); 1653 } 1654 if (region_allocate(region, (char *)entry - (char *)header, 4)) { 1655 if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx)) 1656 goto clear_extattr; 1657 } 1658 region_free(region); 1659 1660 count = header->h_refcount - 1; 1661 if (count) 1662 ea_refcount_store(ctx->refcount, blk, count); 1663 mark_block_used(ctx, blk); 1664 ext2fs_fast_mark_block_bitmap2(ctx->block_ea_map, blk); 1665 return 1; 1666 1667clear_extattr: 1668 if (region) 1669 region_free(region); 1670 ext2fs_file_acl_block_set(fs, inode, 0); 1671 e2fsck_write_inode(ctx, ino, inode, "check_ext_attr"); 1672 return 0; 1673} 1674 1675/* Returns 1 if bad htree, 0 if OK */ 1676static int handle_htree(e2fsck_t ctx, struct problem_context *pctx, 1677 ext2_ino_t ino, struct ext2_inode *inode, 1678 char *block_buf) 1679{ 1680 struct ext2_dx_root_info *root; 1681 ext2_filsys fs = ctx->fs; 1682 errcode_t retval; 1683 blk64_t blk; 1684 1685 if ((!LINUX_S_ISDIR(inode->i_mode) && 1686 fix_problem(ctx, PR_1_HTREE_NODIR, pctx)) || 1687 (!(fs->super->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX) && 1688 fix_problem(ctx, PR_1_HTREE_SET, pctx))) 1689 return 1; 1690 1691 pctx->errcode = ext2fs_bmap2(fs, ino, inode, 0, 0, 0, 0, &blk); 1692 1693 if ((pctx->errcode) || 1694 (blk == 0) || 1695 (blk < fs->super->s_first_data_block) || 1696 (blk >= ext2fs_blocks_count(fs->super))) { 1697 if (fix_problem(ctx, PR_1_HTREE_BADROOT, pctx)) 1698 return 1; 1699 else 1700 return 0; 1701 } 1702 1703 retval = io_channel_read_blk64(fs->io, blk, 1, block_buf); 1704 if (retval && fix_problem(ctx, PR_1_HTREE_BADROOT, pctx)) 1705 return 1; 1706 1707 /* XXX should check that beginning matches a directory */ 1708 root = (struct ext2_dx_root_info *) (block_buf + 24); 1709 1710 if ((root->reserved_zero || root->info_length < 8) && 1711 fix_problem(ctx, PR_1_HTREE_BADROOT, pctx)) 1712 return 1; 1713 1714 pctx->num = root->hash_version; 1715 if ((root->hash_version != EXT2_HASH_LEGACY) && 1716 (root->hash_version != EXT2_HASH_HALF_MD4) && 1717 (root->hash_version != EXT2_HASH_TEA) && 1718 fix_problem(ctx, PR_1_HTREE_HASHV, pctx)) 1719 return 1; 1720 1721 if ((root->unused_flags & EXT2_HASH_FLAG_INCOMPAT) && 1722 fix_problem(ctx, PR_1_HTREE_INCOMPAT, pctx)) 1723 return 1; 1724 1725 pctx->num = root->indirect_levels; 1726 if ((root->indirect_levels > 1) && 1727 fix_problem(ctx, PR_1_HTREE_DEPTH, pctx)) 1728 return 1; 1729 1730 return 0; 1731} 1732 1733void e2fsck_clear_inode(e2fsck_t ctx, ext2_ino_t ino, 1734 struct ext2_inode *inode, int restart_flag, 1735 const char *source) 1736{ 1737 inode->i_flags = 0; 1738 inode->i_links_count = 0; 1739 ext2fs_icount_store(ctx->inode_link_info, ino, 0); 1740 inode->i_dtime = ctx->now; 1741 1742 ext2fs_unmark_inode_bitmap2(ctx->inode_dir_map, ino); 1743 ext2fs_unmark_inode_bitmap2(ctx->inode_used_map, ino); 1744 if (ctx->inode_reg_map) 1745 ext2fs_unmark_inode_bitmap2(ctx->inode_reg_map, ino); 1746 if (ctx->inode_bad_map) 1747 ext2fs_unmark_inode_bitmap2(ctx->inode_bad_map, ino); 1748 1749 /* 1750 * If the inode was partially accounted for before processing 1751 * was aborted, we need to restart the pass 1 scan. 1752 */ 1753 ctx->flags |= restart_flag; 1754 1755 if (ino == EXT2_BAD_INO) 1756 memset(inode, 0, sizeof(struct ext2_inode)); 1757 1758 e2fsck_write_inode(ctx, ino, inode, source); 1759} 1760 1761static void scan_extent_node(e2fsck_t ctx, struct problem_context *pctx, 1762 struct process_block_struct *pb, 1763 blk64_t start_block, 1764 ext2_extent_handle_t ehandle) 1765{ 1766 struct ext2fs_extent extent; 1767 blk64_t blk; 1768 e2_blkcnt_t blockcnt; 1769 unsigned int i; 1770 int is_dir, is_leaf; 1771 errcode_t problem; 1772 struct ext2_extent_info info; 1773 1774 pctx->errcode = ext2fs_extent_get_info(ehandle, &info); 1775 if (pctx->errcode) 1776 return; 1777 1778 pctx->errcode = ext2fs_extent_get(ehandle, EXT2_EXTENT_FIRST_SIB, 1779 &extent); 1780 while (!pctx->errcode && info.num_entries-- > 0) { 1781 is_leaf = extent.e_flags & EXT2_EXTENT_FLAGS_LEAF; 1782 is_dir = LINUX_S_ISDIR(pctx->inode->i_mode); 1783 1784 problem = 0; 1785 if (extent.e_pblk == 0 || 1786 extent.e_pblk < ctx->fs->super->s_first_data_block || 1787 extent.e_pblk >= ext2fs_blocks_count(ctx->fs->super)) 1788 problem = PR_1_EXTENT_BAD_START_BLK; 1789 else if (extent.e_lblk < start_block) 1790 problem = PR_1_OUT_OF_ORDER_EXTENTS; 1791 else if (is_leaf && extent.e_len == 0) 1792 problem = PR_1_EXTENT_LENGTH_ZERO; 1793 else if (is_leaf && 1794 (extent.e_pblk + extent.e_len) > 1795 ext2fs_blocks_count(ctx->fs->super)) 1796 problem = PR_1_EXTENT_ENDS_BEYOND; 1797 1798 if (problem) { 1799report_problem: 1800 pctx->blk = extent.e_pblk; 1801 pctx->blk2 = extent.e_lblk; 1802 pctx->num = extent.e_len; 1803 if (fix_problem(ctx, problem, pctx)) { 1804 e2fsck_read_bitmaps(ctx); 1805 pctx->errcode = 1806 ext2fs_extent_delete(ehandle, 0); 1807 if (pctx->errcode) { 1808 pctx->str = "ext2fs_extent_delete"; 1809 return; 1810 } 1811 ext2fs_extent_fix_parents(ehandle); 1812 pctx->errcode = ext2fs_extent_get(ehandle, 1813 EXT2_EXTENT_CURRENT, 1814 &extent); 1815 if (pctx->errcode == EXT2_ET_NO_CURRENT_NODE) { 1816 pctx->errcode = 0; 1817 break; 1818 } 1819 continue; 1820 } 1821 goto next; 1822 } 1823 1824 if (!is_leaf) { 1825 blk64_t lblk; 1826 1827 blk = extent.e_pblk; 1828 lblk = extent.e_lblk; 1829 pctx->errcode = ext2fs_extent_get(ehandle, 1830 EXT2_EXTENT_DOWN, &extent); 1831 if (pctx->errcode) { 1832 pctx->str = "EXT2_EXTENT_DOWN"; 1833 problem = PR_1_EXTENT_HEADER_INVALID; 1834 if (pctx->errcode == EXT2_ET_EXTENT_HEADER_BAD) 1835 goto report_problem; 1836 return; 1837 } 1838 /* The next extent should match this index's logical start */ 1839 if (extent.e_lblk != lblk) { 1840 struct ext2_extent_info info; 1841 1842 ext2fs_extent_get_info(ehandle, &info); 1843 pctx->blk = lblk; 1844 pctx->blk2 = extent.e_lblk; 1845 pctx->num = info.curr_level - 1; 1846 problem = PR_1_EXTENT_INDEX_START_INVALID; 1847 if (fix_problem(ctx, problem, pctx)) 1848 ext2fs_extent_fix_parents(ehandle); 1849 } 1850 scan_extent_node(ctx, pctx, pb, extent.e_lblk, ehandle); 1851 if (pctx->errcode) 1852 return; 1853 pctx->errcode = ext2fs_extent_get(ehandle, 1854 EXT2_EXTENT_UP, &extent); 1855 if (pctx->errcode) { 1856 pctx->str = "EXT2_EXTENT_UP"; 1857 return; 1858 } 1859 mark_block_used(ctx, blk); 1860 pb->num_blocks++; 1861 goto next; 1862 } 1863 1864 if ((pb->previous_block != 0) && 1865 (pb->previous_block+1 != extent.e_pblk)) { 1866 if (ctx->options & E2F_OPT_FRAGCHECK) { 1867 char type = '?'; 1868 1869 if (pb->is_dir) 1870 type = 'd'; 1871 else if (pb->is_reg) 1872 type = 'f'; 1873 1874 printf(("%6lu(%c): expecting %6lu " 1875 "actual extent " 1876 "phys %6lu log %lu len %lu\n"), 1877 (unsigned long) pctx->ino, type, 1878 (unsigned long) pb->previous_block+1, 1879 (unsigned long) extent.e_pblk, 1880 (unsigned long) extent.e_lblk, 1881 (unsigned long) extent.e_len); 1882 } 1883 pb->fragmented = 1; 1884 } 1885 while (is_dir && ++pb->last_db_block < extent.e_lblk) { 1886 pctx->errcode = ext2fs_add_dir_block2(ctx->fs->dblist, 1887 pb->ino, 0, 1888 pb->last_db_block); 1889 if (pctx->errcode) { 1890 pctx->blk = 0; 1891 pctx->num = pb->last_db_block; 1892 goto failed_add_dir_block; 1893 } 1894 } 1895 if (!ctx->fs->cluster_ratio_bits) { 1896 mark_blocks_used(ctx, extent.e_pblk, extent.e_len); 1897 pb->num_blocks += extent.e_len; 1898 } 1899 for (blk = extent.e_pblk, blockcnt = extent.e_lblk, i = 0; 1900 i < extent.e_len; 1901 blk++, blockcnt++, i++) { 1902 if (ctx->fs->cluster_ratio_bits && 1903 !(pb->previous_block && 1904 (EXT2FS_B2C(ctx->fs, blk) == 1905 EXT2FS_B2C(ctx->fs, pb->previous_block)) && 1906 (blk & EXT2FS_CLUSTER_MASK(ctx->fs)) == 1907 (blockcnt & EXT2FS_CLUSTER_MASK(ctx->fs)))) { 1908 mark_block_used(ctx, blk); 1909 pb->num_blocks++; 1910 } 1911 1912 pb->previous_block = blk; 1913 1914 if (is_dir) { 1915 pctx->errcode = ext2fs_add_dir_block2(ctx->fs->dblist, pctx->ino, blk, blockcnt); 1916 if (pctx->errcode) { 1917 pctx->blk = blk; 1918 pctx->num = blockcnt; 1919 failed_add_dir_block: 1920 fix_problem(ctx, PR_1_ADD_DBLOCK, pctx); 1921 /* Should never get here */ 1922 ctx->flags |= E2F_FLAG_ABORT; 1923 return; 1924 } 1925 } 1926 } 1927 if (is_dir && extent.e_len > 0) 1928 pb->last_db_block = blockcnt - 1; 1929 pb->previous_block = extent.e_pblk + extent.e_len - 1; 1930 start_block = pb->last_block = extent.e_lblk + extent.e_len - 1; 1931 if (is_leaf && !is_dir && 1932 !(extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT)) 1933 pb->last_init_lblock = extent.e_lblk + extent.e_len - 1; 1934 next: 1935 pctx->errcode = ext2fs_extent_get(ehandle, 1936 EXT2_EXTENT_NEXT_SIB, 1937 &extent); 1938 } 1939 if (pctx->errcode == EXT2_ET_EXTENT_NO_NEXT) 1940 pctx->errcode = 0; 1941} 1942 1943static void check_blocks_extents(e2fsck_t ctx, struct problem_context *pctx, 1944 struct process_block_struct *pb) 1945{ 1946 struct ext2_extent_info info; 1947 struct ext2_inode *inode = pctx->inode; 1948 ext2_extent_handle_t ehandle; 1949 ext2_filsys fs = ctx->fs; 1950 ext2_ino_t ino = pctx->ino; 1951 errcode_t retval; 1952 1953 pctx->errcode = ext2fs_extent_open2(fs, ino, inode, &ehandle); 1954 if (pctx->errcode) { 1955 if (fix_problem(ctx, PR_1_READ_EXTENT, pctx)) 1956 e2fsck_clear_inode(ctx, ino, inode, 0, 1957 "check_blocks_extents"); 1958 pctx->errcode = 0; 1959 return; 1960 } 1961 1962 retval = ext2fs_extent_get_info(ehandle, &info); 1963 if (retval == 0) { 1964 if (info.max_depth >= MAX_EXTENT_DEPTH_COUNT) 1965 info.max_depth = MAX_EXTENT_DEPTH_COUNT-1; 1966 ctx->extent_depth_count[info.max_depth]++; 1967 } 1968 1969 scan_extent_node(ctx, pctx, pb, 0, ehandle); 1970 if (pctx->errcode && 1971 fix_problem(ctx, PR_1_EXTENT_ITERATE_FAILURE, pctx)) { 1972 pb->num_blocks = 0; 1973 inode->i_blocks = 0; 1974 e2fsck_clear_inode(ctx, ino, inode, E2F_FLAG_RESTART, 1975 "check_blocks_extents"); 1976 pctx->errcode = 0; 1977 } 1978 ext2fs_extent_free(ehandle); 1979} 1980 1981/* 1982 * This subroutine is called on each inode to account for all of the 1983 * blocks used by that inode. 1984 */ 1985static void check_blocks(e2fsck_t ctx, struct problem_context *pctx, 1986 char *block_buf) 1987{ 1988 ext2_filsys fs = ctx->fs; 1989 struct process_block_struct pb; 1990 ext2_ino_t ino = pctx->ino; 1991 struct ext2_inode *inode = pctx->inode; 1992 int bad_size = 0; 1993 int dirty_inode = 0; 1994 int extent_fs; 1995 __u64 size; 1996 1997 pb.ino = ino; 1998 pb.num_blocks = 0; 1999 pb.last_block = -1; 2000 pb.last_init_lblock = -1; 2001 pb.last_db_block = -1; 2002 pb.num_illegal_blocks = 0; 2003 pb.suppress = 0; pb.clear = 0; 2004 pb.fragmented = 0; 2005 pb.compressed = 0; 2006 pb.previous_block = 0; 2007 pb.is_dir = LINUX_S_ISDIR(inode->i_mode); 2008 pb.is_reg = LINUX_S_ISREG(inode->i_mode); 2009 pb.max_blocks = 1 << (31 - fs->super->s_log_block_size); 2010 pb.inode = inode; 2011 pb.pctx = pctx; 2012 pb.ctx = ctx; 2013 pctx->ino = ino; 2014 pctx->errcode = 0; 2015 2016 extent_fs = (ctx->fs->super->s_feature_incompat & 2017 EXT3_FEATURE_INCOMPAT_EXTENTS); 2018 2019 if (inode->i_flags & EXT2_COMPRBLK_FL) { 2020 if (fs->super->s_feature_incompat & 2021 EXT2_FEATURE_INCOMPAT_COMPRESSION) 2022 pb.compressed = 1; 2023 else { 2024 if (fix_problem(ctx, PR_1_COMPR_SET, pctx)) { 2025 inode->i_flags &= ~EXT2_COMPRBLK_FL; 2026 dirty_inode++; 2027 } 2028 } 2029 } 2030 2031 if (ext2fs_file_acl_block(fs, inode) && 2032 check_ext_attr(ctx, pctx, block_buf)) { 2033 if (ctx->flags & E2F_FLAG_SIGNAL_MASK) 2034 goto out; 2035 pb.num_blocks++; 2036 } 2037 2038 if (ext2fs_inode_has_valid_blocks2(fs, inode)) { 2039 if (extent_fs && (inode->i_flags & EXT4_EXTENTS_FL)) 2040 check_blocks_extents(ctx, pctx, &pb); 2041 else { 2042 pctx->errcode = ext2fs_block_iterate3(fs, ino, 2043 pb.is_dir ? BLOCK_FLAG_HOLE : 0, 2044 block_buf, process_block, &pb); 2045 /* 2046 * We do not have uninitialized extents in non extent 2047 * files. 2048 */ 2049 pb.last_init_lblock = pb.last_block; 2050 } 2051 } 2052 end_problem_latch(ctx, PR_LATCH_BLOCK); 2053 end_problem_latch(ctx, PR_LATCH_TOOBIG); 2054 if (ctx->flags & E2F_FLAG_SIGNAL_MASK) 2055 goto out; 2056 if (pctx->errcode) 2057 fix_problem(ctx, PR_1_BLOCK_ITERATE, pctx); 2058 2059 if (pb.fragmented && pb.num_blocks < fs->super->s_blocks_per_group) { 2060 if (LINUX_S_ISDIR(inode->i_mode)) 2061 ctx->fs_fragmented_dir++; 2062 else 2063 ctx->fs_fragmented++; 2064 } 2065 2066 if (pb.clear) { 2067 e2fsck_clear_inode(ctx, ino, inode, E2F_FLAG_RESTART, 2068 "check_blocks"); 2069 return; 2070 } 2071 2072 if (inode->i_flags & EXT2_INDEX_FL) { 2073 if (handle_htree(ctx, pctx, ino, inode, block_buf)) { 2074 inode->i_flags &= ~EXT2_INDEX_FL; 2075 dirty_inode++; 2076 } else { 2077#ifdef ENABLE_HTREE 2078 e2fsck_add_dx_dir(ctx, ino, pb.last_block+1); 2079#endif 2080 } 2081 } 2082 2083 if (!pb.num_blocks && pb.is_dir) { 2084 if (fix_problem(ctx, PR_1_ZERO_LENGTH_DIR, pctx)) { 2085 e2fsck_clear_inode(ctx, ino, inode, 0, "check_blocks"); 2086 ctx->fs_directory_count--; 2087 return; 2088 } 2089 } 2090 2091 if (ino == EXT2_ROOT_INO || ino >= EXT2_FIRST_INODE(ctx->fs->super)) { 2092 quota_data_add(ctx->qctx, inode, ino, 2093 pb.num_blocks * fs->blocksize); 2094 quota_data_inodes(ctx->qctx, inode, ino, +1); 2095 } 2096 2097 if (!(fs->super->s_feature_ro_compat & 2098 EXT4_FEATURE_RO_COMPAT_HUGE_FILE) || 2099 !(inode->i_flags & EXT4_HUGE_FILE_FL)) 2100 pb.num_blocks *= (fs->blocksize / 512); 2101 pb.num_blocks *= EXT2FS_CLUSTER_RATIO(fs); 2102#if 0 2103 printf("inode %u, i_size = %u, last_block = %lld, i_blocks=%llu, num_blocks = %llu\n", 2104 ino, inode->i_size, pb.last_block, ext2fs_inode_i_blocks(fs, inode), 2105 pb.num_blocks); 2106#endif 2107 if (pb.is_dir) { 2108 int nblock = inode->i_size >> EXT2_BLOCK_SIZE_BITS(fs->super); 2109 if (inode->i_size & (fs->blocksize - 1)) 2110 bad_size = 5; 2111 else if (nblock > (pb.last_block + 1)) 2112 bad_size = 1; 2113 else if (nblock < (pb.last_block + 1)) { 2114 if (((pb.last_block + 1) - nblock) > 2115 fs->super->s_prealloc_dir_blocks) 2116 bad_size = 2; 2117 } 2118 } else { 2119 e2_blkcnt_t blkpg = ctx->blocks_per_page; 2120 2121 size = EXT2_I_SIZE(inode); 2122 if ((pb.last_init_lblock >= 0) && 2123 /* allow allocated blocks to end of PAGE_SIZE */ 2124 (size < (__u64)pb.last_init_lblock * fs->blocksize) && 2125 (pb.last_init_lblock / blkpg * blkpg != pb.last_init_lblock || 2126 size < (__u64)(pb.last_init_lblock & ~(blkpg-1)) * 2127 fs->blocksize)) 2128 bad_size = 3; 2129 else if (!(extent_fs && (inode->i_flags & EXT4_EXTENTS_FL)) && 2130 size > ext2_max_sizes[fs->super->s_log_block_size]) 2131 /* too big for a direct/indirect-mapped file */ 2132 bad_size = 4; 2133 else if ((extent_fs && (inode->i_flags & EXT4_EXTENTS_FL)) && 2134 size > 2135 ((1ULL << (32 + EXT2_BLOCK_SIZE_BITS(fs->super))) - 1)) 2136 /* too big for an extent-based file - 32bit ee_block */ 2137 bad_size = 6; 2138 } 2139 /* i_size for symlinks is checked elsewhere */ 2140 if (bad_size && !LINUX_S_ISLNK(inode->i_mode)) { 2141 pctx->num = (pb.last_block+1) * fs->blocksize; 2142 pctx->group = bad_size; 2143 if (fix_problem(ctx, PR_1_BAD_I_SIZE, pctx)) { 2144 inode->i_size = pctx->num; 2145 if (!LINUX_S_ISDIR(inode->i_mode)) 2146 inode->i_size_high = pctx->num >> 32; 2147 dirty_inode++; 2148 } 2149 pctx->num = 0; 2150 } 2151 if (LINUX_S_ISREG(inode->i_mode) && EXT2_I_SIZE(inode) >= 0x80000000UL) 2152 ctx->large_files++; 2153 if ((pb.num_blocks != ext2fs_inode_i_blocks(fs, inode)) || 2154 ((fs->super->s_feature_ro_compat & 2155 EXT4_FEATURE_RO_COMPAT_HUGE_FILE) && 2156 (inode->i_flags & EXT4_HUGE_FILE_FL) && 2157 (inode->osd2.linux2.l_i_blocks_hi != 0))) { 2158 pctx->num = pb.num_blocks; 2159 if (fix_problem(ctx, PR_1_BAD_I_BLOCKS, pctx)) { 2160 inode->i_blocks = pb.num_blocks; 2161 inode->osd2.linux2.l_i_blocks_hi = pb.num_blocks >> 32; 2162 dirty_inode++; 2163 } 2164 pctx->num = 0; 2165 } 2166 2167 if (ctx->dirs_to_hash && pb.is_dir && 2168 !(inode->i_flags & EXT2_INDEX_FL) && 2169 ((inode->i_size / fs->blocksize) >= 3)) 2170 ext2fs_u32_list_add(ctx->dirs_to_hash, ino); 2171 2172out: 2173 if (dirty_inode) 2174 e2fsck_write_inode(ctx, ino, inode, "check_blocks"); 2175} 2176 2177#if 0 2178/* 2179 * Helper function called by process block when an illegal block is 2180 * found. It returns a description about why the block is illegal 2181 */ 2182static char *describe_illegal_block(ext2_filsys fs, blk64_t block) 2183{ 2184 blk64_t super; 2185 int i; 2186 static char problem[80]; 2187 2188 super = fs->super->s_first_data_block; 2189 strcpy(problem, "PROGRAMMING ERROR: Unknown reason for illegal block"); 2190 if (block < super) { 2191 sprintf(problem, "< FIRSTBLOCK (%u)", super); 2192 return(problem); 2193 } else if (block >= ext2fs_blocks_count(fs->super)) { 2194 sprintf(problem, "> BLOCKS (%u)", ext2fs_blocks_count(fs->super)); 2195 return(problem); 2196 } 2197 for (i = 0; i < fs->group_desc_count; i++) { 2198 if (block == super) { 2199 sprintf(problem, "is the superblock in group %d", i); 2200 break; 2201 } 2202 if (block > super && 2203 block <= (super + fs->desc_blocks)) { 2204 sprintf(problem, "is in the group descriptors " 2205 "of group %d", i); 2206 break; 2207 } 2208 if (block == ext2fs_block_bitmap_loc(fs, i)) { 2209 sprintf(problem, "is the block bitmap of group %d", i); 2210 break; 2211 } 2212 if (block == ext2fs_inode_bitmap_loc(fs, i)) { 2213 sprintf(problem, "is the inode bitmap of group %d", i); 2214 break; 2215 } 2216 if (block >= ext2fs_inode_table_loc(fs, i) && 2217 (block < ext2fs_inode_table_loc(fs, i) 2218 + fs->inode_blocks_per_group)) { 2219 sprintf(problem, "is in the inode table of group %d", 2220 i); 2221 break; 2222 } 2223 super += fs->super->s_blocks_per_group; 2224 } 2225 return(problem); 2226} 2227#endif 2228 2229/* 2230 * This is a helper function for check_blocks(). 2231 */ 2232static int process_block(ext2_filsys fs, 2233 blk64_t *block_nr, 2234 e2_blkcnt_t blockcnt, 2235 blk64_t ref_block EXT2FS_ATTR((unused)), 2236 int ref_offset EXT2FS_ATTR((unused)), 2237 void *priv_data) 2238{ 2239 struct process_block_struct *p; 2240 struct problem_context *pctx; 2241 blk64_t blk = *block_nr; 2242 int ret_code = 0; 2243 int problem = 0; 2244 e2fsck_t ctx; 2245 2246 p = (struct process_block_struct *) priv_data; 2247 pctx = p->pctx; 2248 ctx = p->ctx; 2249 2250 if (p->compressed && (blk == EXT2FS_COMPRESSED_BLKADDR)) { 2251 /* todo: Check that the comprblk_fl is high, that the 2252 blkaddr pattern looks right (all non-holes up to 2253 first EXT2FS_COMPRESSED_BLKADDR, then all 2254 EXT2FS_COMPRESSED_BLKADDR up to end of cluster), 2255 that the feature_incompat bit is high, and that the 2256 inode is a regular file. If we're doing a "full 2257 check" (a concept introduced to e2fsck by e2compr, 2258 meaning that we look at data blocks as well as 2259 metadata) then call some library routine that 2260 checks the compressed data. I'll have to think 2261 about this, because one particularly important 2262 problem to be able to fix is to recalculate the 2263 cluster size if necessary. I think that perhaps 2264 we'd better do most/all e2compr-specific checks 2265 separately, after the non-e2compr checks. If not 2266 doing a full check, it may be useful to test that 2267 the personality is linux; e.g. if it isn't then 2268 perhaps this really is just an illegal block. */ 2269 return 0; 2270 } 2271 2272 if (blk == 0) 2273 return 0; 2274 2275#if 0 2276 printf("Process_block, inode %lu, block %u, #%d\n", p->ino, blk, 2277 blockcnt); 2278#endif 2279 2280 /* 2281 * Simplistic fragmentation check. We merely require that the 2282 * file be contiguous. (Which can never be true for really 2283 * big files that are greater than a block group.) 2284 */ 2285 if (!HOLE_BLKADDR(p->previous_block) && p->ino != EXT2_RESIZE_INO) { 2286 if (p->previous_block+1 != blk) { 2287 if (ctx->options & E2F_OPT_FRAGCHECK) { 2288 char type = '?'; 2289 2290 if (p->is_dir) 2291 type = 'd'; 2292 else if (p->is_reg) 2293 type = 'f'; 2294 2295 printf(_("%6lu(%c): expecting %6lu " 2296 "got phys %6lu (blkcnt %lld)\n"), 2297 (unsigned long) pctx->ino, type, 2298 (unsigned long) p->previous_block+1, 2299 (unsigned long) blk, 2300 blockcnt); 2301 } 2302 p->fragmented = 1; 2303 } 2304 } 2305 2306 if (p->is_dir && blockcnt > (1 << (21 - fs->super->s_log_block_size))) 2307 problem = PR_1_TOOBIG_DIR; 2308 if (p->is_reg && p->num_blocks+1 >= p->max_blocks) 2309 problem = PR_1_TOOBIG_REG; 2310 if (!p->is_dir && !p->is_reg && blockcnt > 0) 2311 problem = PR_1_TOOBIG_SYMLINK; 2312 2313 if (blk < fs->super->s_first_data_block || 2314 blk >= ext2fs_blocks_count(fs->super)) 2315 problem = PR_1_ILLEGAL_BLOCK_NUM; 2316 2317 if (problem) { 2318 p->num_illegal_blocks++; 2319 if (!p->suppress && (p->num_illegal_blocks % 12) == 0) { 2320 if (fix_problem(ctx, PR_1_TOO_MANY_BAD_BLOCKS, pctx)) { 2321 p->clear = 1; 2322 return BLOCK_ABORT; 2323 } 2324 if (fix_problem(ctx, PR_1_SUPPRESS_MESSAGES, pctx)) { 2325 p->suppress = 1; 2326 set_latch_flags(PR_LATCH_BLOCK, 2327 PRL_SUPPRESS, 0); 2328 } 2329 } 2330 pctx->blk = blk; 2331 pctx->blkcount = blockcnt; 2332 if (fix_problem(ctx, problem, pctx)) { 2333 blk = *block_nr = 0; 2334 ret_code = BLOCK_CHANGED; 2335 goto mark_dir; 2336 } else 2337 return 0; 2338 } 2339 2340 if (p->ino == EXT2_RESIZE_INO) { 2341 /* 2342 * The resize inode has already be sanity checked 2343 * during pass #0 (the superblock checks). All we 2344 * have to do is mark the double indirect block as 2345 * being in use; all of the other blocks are handled 2346 * by mark_table_blocks()). 2347 */ 2348 if (blockcnt == BLOCK_COUNT_DIND) 2349 mark_block_used(ctx, blk); 2350 p->num_blocks++; 2351 } else if (!(ctx->fs->cluster_ratio_bits && 2352 p->previous_block && 2353 (EXT2FS_B2C(ctx->fs, blk) == 2354 EXT2FS_B2C(ctx->fs, p->previous_block)) && 2355 (blk & EXT2FS_CLUSTER_MASK(ctx->fs)) == 2356 (blockcnt & EXT2FS_CLUSTER_MASK(ctx->fs)))) { 2357 mark_block_used(ctx, blk); 2358 p->num_blocks++; 2359 } 2360 if (blockcnt >= 0) 2361 p->last_block = blockcnt; 2362 p->previous_block = blk; 2363mark_dir: 2364 if (p->is_dir && (blockcnt >= 0)) { 2365 while (++p->last_db_block < blockcnt) { 2366 pctx->errcode = ext2fs_add_dir_block2(fs->dblist, 2367 p->ino, 0, 2368 p->last_db_block); 2369 if (pctx->errcode) { 2370 pctx->blk = 0; 2371 pctx->num = p->last_db_block; 2372 goto failed_add_dir_block; 2373 } 2374 } 2375 pctx->errcode = ext2fs_add_dir_block2(fs->dblist, p->ino, 2376 blk, blockcnt); 2377 if (pctx->errcode) { 2378 pctx->blk = blk; 2379 pctx->num = blockcnt; 2380 failed_add_dir_block: 2381 fix_problem(ctx, PR_1_ADD_DBLOCK, pctx); 2382 /* Should never get here */ 2383 ctx->flags |= E2F_FLAG_ABORT; 2384 return BLOCK_ABORT; 2385 } 2386 } 2387 return ret_code; 2388} 2389 2390static int process_bad_block(ext2_filsys fs, 2391 blk64_t *block_nr, 2392 e2_blkcnt_t blockcnt, 2393 blk64_t ref_block EXT2FS_ATTR((unused)), 2394 int ref_offset EXT2FS_ATTR((unused)), 2395 void *priv_data) 2396{ 2397 struct process_block_struct *p; 2398 blk64_t blk = *block_nr; 2399 blk64_t first_block; 2400 dgrp_t i; 2401 struct problem_context *pctx; 2402 e2fsck_t ctx; 2403 2404 /* 2405 * Note: This function processes blocks for the bad blocks 2406 * inode, which is never compressed. So we don't use HOLE_BLKADDR(). 2407 */ 2408 2409 if (!blk) 2410 return 0; 2411 2412 p = (struct process_block_struct *) priv_data; 2413 ctx = p->ctx; 2414 pctx = p->pctx; 2415 2416 pctx->ino = EXT2_BAD_INO; 2417 pctx->blk = blk; 2418 pctx->blkcount = blockcnt; 2419 2420 if ((blk < fs->super->s_first_data_block) || 2421 (blk >= ext2fs_blocks_count(fs->super))) { 2422 if (fix_problem(ctx, PR_1_BB_ILLEGAL_BLOCK_NUM, pctx)) { 2423 *block_nr = 0; 2424 return BLOCK_CHANGED; 2425 } else 2426 return 0; 2427 } 2428 2429 if (blockcnt < 0) { 2430 if (ext2fs_test_block_bitmap2(p->fs_meta_blocks, blk)) { 2431 p->bbcheck = 1; 2432 if (fix_problem(ctx, PR_1_BB_FS_BLOCK, pctx)) { 2433 *block_nr = 0; 2434 return BLOCK_CHANGED; 2435 } 2436 } else if (ext2fs_test_block_bitmap2(ctx->block_found_map, 2437 blk)) { 2438 p->bbcheck = 1; 2439 if (fix_problem(ctx, PR_1_BBINODE_BAD_METABLOCK, 2440 pctx)) { 2441 *block_nr = 0; 2442 return BLOCK_CHANGED; 2443 } 2444 if (ctx->flags & E2F_FLAG_SIGNAL_MASK) 2445 return BLOCK_ABORT; 2446 } else 2447 mark_block_used(ctx, blk); 2448 return 0; 2449 } 2450#if 0 2451 printf ("DEBUG: Marking %u as bad.\n", blk); 2452#endif 2453 ctx->fs_badblocks_count++; 2454 /* 2455 * If the block is not used, then mark it as used and return. 2456 * If it is already marked as found, this must mean that 2457 * there's an overlap between the filesystem table blocks 2458 * (bitmaps and inode table) and the bad block list. 2459 */ 2460 if (!ext2fs_test_block_bitmap2(ctx->block_found_map, blk)) { 2461 ext2fs_mark_block_bitmap2(ctx->block_found_map, blk); 2462 return 0; 2463 } 2464 /* 2465 * Try to find the where the filesystem block was used... 2466 */ 2467 first_block = fs->super->s_first_data_block; 2468 2469 for (i = 0; i < fs->group_desc_count; i++ ) { 2470 pctx->group = i; 2471 pctx->blk = blk; 2472 if (!ext2fs_bg_has_super(fs, i)) 2473 goto skip_super; 2474 if (blk == first_block) { 2475 if (i == 0) { 2476 if (fix_problem(ctx, 2477 PR_1_BAD_PRIMARY_SUPERBLOCK, 2478 pctx)) { 2479 *block_nr = 0; 2480 return BLOCK_CHANGED; 2481 } 2482 return 0; 2483 } 2484 fix_problem(ctx, PR_1_BAD_SUPERBLOCK, pctx); 2485 return 0; 2486 } 2487 if ((blk > first_block) && 2488 (blk <= first_block + fs->desc_blocks)) { 2489 if (i == 0) { 2490 pctx->blk = *block_nr; 2491 if (fix_problem(ctx, 2492 PR_1_BAD_PRIMARY_GROUP_DESCRIPTOR, pctx)) { 2493 *block_nr = 0; 2494 return BLOCK_CHANGED; 2495 } 2496 return 0; 2497 } 2498 fix_problem(ctx, PR_1_BAD_GROUP_DESCRIPTORS, pctx); 2499 return 0; 2500 } 2501 skip_super: 2502 if (blk == ext2fs_block_bitmap_loc(fs, i)) { 2503 if (fix_problem(ctx, PR_1_BB_BAD_BLOCK, pctx)) { 2504 ctx->invalid_block_bitmap_flag[i]++; 2505 ctx->invalid_bitmaps++; 2506 } 2507 return 0; 2508 } 2509 if (blk == ext2fs_inode_bitmap_loc(fs, i)) { 2510 if (fix_problem(ctx, PR_1_IB_BAD_BLOCK, pctx)) { 2511 ctx->invalid_inode_bitmap_flag[i]++; 2512 ctx->invalid_bitmaps++; 2513 } 2514 return 0; 2515 } 2516 if ((blk >= ext2fs_inode_table_loc(fs, i)) && 2517 (blk < (ext2fs_inode_table_loc(fs, i) + 2518 fs->inode_blocks_per_group))) { 2519 /* 2520 * If there are bad blocks in the inode table, 2521 * the inode scan code will try to do 2522 * something reasonable automatically. 2523 */ 2524 return 0; 2525 } 2526 first_block += fs->super->s_blocks_per_group; 2527 } 2528 /* 2529 * If we've gotten to this point, then the only 2530 * possibility is that the bad block inode meta data 2531 * is using a bad block. 2532 */ 2533 if ((blk == p->inode->i_block[EXT2_IND_BLOCK]) || 2534 (blk == p->inode->i_block[EXT2_DIND_BLOCK]) || 2535 (blk == p->inode->i_block[EXT2_TIND_BLOCK])) { 2536 p->bbcheck = 1; 2537 if (fix_problem(ctx, PR_1_BBINODE_BAD_METABLOCK, pctx)) { 2538 *block_nr = 0; 2539 return BLOCK_CHANGED; 2540 } 2541 if (ctx->flags & E2F_FLAG_SIGNAL_MASK) 2542 return BLOCK_ABORT; 2543 return 0; 2544 } 2545 2546 pctx->group = -1; 2547 2548 /* Warn user that the block wasn't claimed */ 2549 fix_problem(ctx, PR_1_PROGERR_CLAIMED_BLOCK, pctx); 2550 2551 return 0; 2552} 2553 2554static void new_table_block(e2fsck_t ctx, blk_t first_block, int group, 2555 const char *name, int num, blk64_t *new_block) 2556{ 2557 ext2_filsys fs = ctx->fs; 2558 dgrp_t last_grp; 2559 blk64_t old_block = *new_block; 2560 blk64_t last_block; 2561 int i, is_flexbg, flexbg, flexbg_size; 2562 char *buf; 2563 struct problem_context pctx; 2564 2565 clear_problem_context(&pctx); 2566 2567 pctx.group = group; 2568 pctx.blk = old_block; 2569 pctx.str = name; 2570 2571 /* 2572 * For flex_bg filesystems, first try to allocate the metadata 2573 * within the flex_bg, and if that fails then try finding the 2574 * space anywhere in the filesystem. 2575 */ 2576 is_flexbg = EXT2_HAS_INCOMPAT_FEATURE(fs->super, 2577 EXT4_FEATURE_INCOMPAT_FLEX_BG); 2578 if (is_flexbg) { 2579 flexbg_size = 1 << fs->super->s_log_groups_per_flex; 2580 flexbg = group / flexbg_size; 2581 first_block = ext2fs_group_first_block2(fs, 2582 flexbg_size * flexbg); 2583 last_grp = group | (flexbg_size - 1); 2584 if (last_grp > fs->group_desc_count) 2585 last_grp = fs->group_desc_count; 2586 last_block = ext2fs_group_last_block2(fs, last_grp); 2587 } else 2588 last_block = ext2fs_group_last_block2(fs, group); 2589 pctx.errcode = ext2fs_get_free_blocks2(fs, first_block, last_block, 2590 num, ctx->block_found_map, 2591 new_block); 2592 if (is_flexbg && (pctx.errcode == EXT2_ET_BLOCK_ALLOC_FAIL)) 2593 pctx.errcode = ext2fs_get_free_blocks2(fs, 2594 fs->super->s_first_data_block, 2595 ext2fs_blocks_count(fs->super), 2596 num, ctx->block_found_map, new_block); 2597 if (pctx.errcode) { 2598 pctx.num = num; 2599 fix_problem(ctx, PR_1_RELOC_BLOCK_ALLOCATE, &pctx); 2600 ext2fs_unmark_valid(fs); 2601 ctx->flags |= E2F_FLAG_ABORT; 2602 return; 2603 } 2604 pctx.errcode = ext2fs_get_mem(fs->blocksize, &buf); 2605 if (pctx.errcode) { 2606 fix_problem(ctx, PR_1_RELOC_MEMORY_ALLOCATE, &pctx); 2607 ext2fs_unmark_valid(fs); 2608 ctx->flags |= E2F_FLAG_ABORT; 2609 return; 2610 } 2611 ext2fs_mark_super_dirty(fs); 2612 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY; 2613 pctx.blk2 = *new_block; 2614 fix_problem(ctx, (old_block ? PR_1_RELOC_FROM_TO : 2615 PR_1_RELOC_TO), &pctx); 2616 pctx.blk2 = 0; 2617 for (i = 0; i < num; i++) { 2618 pctx.blk = i; 2619 ext2fs_mark_block_bitmap2(ctx->block_found_map, (*new_block)+i); 2620 if (old_block) { 2621 pctx.errcode = io_channel_read_blk64(fs->io, 2622 old_block + i, 1, buf); 2623 if (pctx.errcode) 2624 fix_problem(ctx, PR_1_RELOC_READ_ERR, &pctx); 2625 } else 2626 memset(buf, 0, fs->blocksize); 2627 2628 pctx.blk = (*new_block) + i; 2629 pctx.errcode = io_channel_write_blk64(fs->io, pctx.blk, 2630 1, buf); 2631 if (pctx.errcode) 2632 fix_problem(ctx, PR_1_RELOC_WRITE_ERR, &pctx); 2633 } 2634 ext2fs_free_mem(&buf); 2635} 2636 2637/* 2638 * This routine gets called at the end of pass 1 if bad blocks are 2639 * detected in the superblock, group descriptors, inode_bitmaps, or 2640 * block bitmaps. At this point, all of the blocks have been mapped 2641 * out, so we can try to allocate new block(s) to replace the bad 2642 * blocks. 2643 */ 2644static void handle_fs_bad_blocks(e2fsck_t ctx) 2645{ 2646 ext2_filsys fs = ctx->fs; 2647 dgrp_t i; 2648 blk64_t first_block; 2649 blk64_t new_blk; 2650 2651 for (i = 0; i < fs->group_desc_count; i++) { 2652 first_block = ext2fs_group_first_block2(fs, i); 2653 2654 if (ctx->invalid_block_bitmap_flag[i]) { 2655 new_blk = ext2fs_block_bitmap_loc(fs, i); 2656 new_table_block(ctx, first_block, i, _("block bitmap"), 2657 1, &new_blk); 2658 ext2fs_block_bitmap_loc_set(fs, i, new_blk); 2659 } 2660 if (ctx->invalid_inode_bitmap_flag[i]) { 2661 new_blk = ext2fs_inode_bitmap_loc(fs, i); 2662 new_table_block(ctx, first_block, i, _("inode bitmap"), 2663 1, &new_blk); 2664 ext2fs_inode_bitmap_loc_set(fs, i, new_blk); 2665 } 2666 if (ctx->invalid_inode_table_flag[i]) { 2667 new_blk = ext2fs_inode_table_loc(fs, i); 2668 new_table_block(ctx, first_block, i, _("inode table"), 2669 fs->inode_blocks_per_group, 2670 &new_blk); 2671 ext2fs_inode_table_loc_set(fs, i, new_blk); 2672 ctx->flags |= E2F_FLAG_RESTART; 2673 } 2674 } 2675 ctx->invalid_bitmaps = 0; 2676} 2677 2678/* 2679 * This routine marks all blocks which are used by the superblock, 2680 * group descriptors, inode bitmaps, and block bitmaps. 2681 */ 2682static void mark_table_blocks(e2fsck_t ctx) 2683{ 2684 ext2_filsys fs = ctx->fs; 2685 blk64_t b; 2686 dgrp_t i; 2687 int j; 2688 struct problem_context pctx; 2689 2690 clear_problem_context(&pctx); 2691 2692 for (i = 0; i < fs->group_desc_count; i++) { 2693 pctx.group = i; 2694 2695 ext2fs_reserve_super_and_bgd(fs, i, ctx->block_found_map); 2696 2697 /* 2698 * Mark the blocks used for the inode table 2699 */ 2700 if (ext2fs_inode_table_loc(fs, i)) { 2701 for (j = 0, b = ext2fs_inode_table_loc(fs, i); 2702 j < fs->inode_blocks_per_group; 2703 j++, b++) { 2704 if (ext2fs_test_block_bitmap2(ctx->block_found_map, 2705 b)) { 2706 pctx.blk = b; 2707 if (!ctx->invalid_inode_table_flag[i] && 2708 fix_problem(ctx, 2709 PR_1_ITABLE_CONFLICT, &pctx)) { 2710 ctx->invalid_inode_table_flag[i]++; 2711 ctx->invalid_bitmaps++; 2712 } 2713 } else { 2714 ext2fs_mark_block_bitmap2(ctx->block_found_map, 2715 b); 2716 } 2717 } 2718 } 2719 2720 /* 2721 * Mark block used for the block bitmap 2722 */ 2723 if (ext2fs_block_bitmap_loc(fs, i)) { 2724 if (ext2fs_test_block_bitmap2(ctx->block_found_map, 2725 ext2fs_block_bitmap_loc(fs, i))) { 2726 pctx.blk = ext2fs_block_bitmap_loc(fs, i); 2727 if (fix_problem(ctx, PR_1_BB_CONFLICT, &pctx)) { 2728 ctx->invalid_block_bitmap_flag[i]++; 2729 ctx->invalid_bitmaps++; 2730 } 2731 } else { 2732 ext2fs_mark_block_bitmap2(ctx->block_found_map, 2733 ext2fs_block_bitmap_loc(fs, i)); 2734 } 2735 2736 } 2737 /* 2738 * Mark block used for the inode bitmap 2739 */ 2740 if (ext2fs_inode_bitmap_loc(fs, i)) { 2741 if (ext2fs_test_block_bitmap2(ctx->block_found_map, 2742 ext2fs_inode_bitmap_loc(fs, i))) { 2743 pctx.blk = ext2fs_inode_bitmap_loc(fs, i); 2744 if (fix_problem(ctx, PR_1_IB_CONFLICT, &pctx)) { 2745 ctx->invalid_inode_bitmap_flag[i]++; 2746 ctx->invalid_bitmaps++; 2747 } 2748 } else { 2749 ext2fs_mark_block_bitmap2(ctx->block_found_map, 2750 ext2fs_inode_bitmap_loc(fs, i)); 2751 } 2752 } 2753 } 2754} 2755 2756/* 2757 * Thes subroutines short circuits ext2fs_get_blocks and 2758 * ext2fs_check_directory; we use them since we already have the inode 2759 * structure, so there's no point in letting the ext2fs library read 2760 * the inode again. 2761 */ 2762static errcode_t pass1_get_blocks(ext2_filsys fs, ext2_ino_t ino, 2763 blk_t *blocks) 2764{ 2765 e2fsck_t ctx = (e2fsck_t) fs->priv_data; 2766 int i; 2767 2768 if ((ino != ctx->stashed_ino) || !ctx->stashed_inode) 2769 return EXT2_ET_CALLBACK_NOTHANDLED; 2770 2771 for (i=0; i < EXT2_N_BLOCKS; i++) 2772 blocks[i] = ctx->stashed_inode->i_block[i]; 2773 return 0; 2774} 2775 2776static errcode_t pass1_read_inode(ext2_filsys fs, ext2_ino_t ino, 2777 struct ext2_inode *inode) 2778{ 2779 e2fsck_t ctx = (e2fsck_t) fs->priv_data; 2780 2781 if ((ino != ctx->stashed_ino) || !ctx->stashed_inode) 2782 return EXT2_ET_CALLBACK_NOTHANDLED; 2783 *inode = *ctx->stashed_inode; 2784 return 0; 2785} 2786 2787static errcode_t pass1_write_inode(ext2_filsys fs, ext2_ino_t ino, 2788 struct ext2_inode *inode) 2789{ 2790 e2fsck_t ctx = (e2fsck_t) fs->priv_data; 2791 2792 if ((ino == ctx->stashed_ino) && ctx->stashed_inode && 2793 (inode != ctx->stashed_inode)) 2794 *ctx->stashed_inode = *inode; 2795 return EXT2_ET_CALLBACK_NOTHANDLED; 2796} 2797 2798static errcode_t pass1_check_directory(ext2_filsys fs, ext2_ino_t ino) 2799{ 2800 e2fsck_t ctx = (e2fsck_t) fs->priv_data; 2801 2802 if ((ino != ctx->stashed_ino) || !ctx->stashed_inode) 2803 return EXT2_ET_CALLBACK_NOTHANDLED; 2804 2805 if (!LINUX_S_ISDIR(ctx->stashed_inode->i_mode)) 2806 return EXT2_ET_NO_DIRECTORY; 2807 return 0; 2808} 2809 2810static errcode_t e2fsck_get_alloc_block(ext2_filsys fs, blk64_t goal, 2811 blk64_t *ret) 2812{ 2813 e2fsck_t ctx = (e2fsck_t) fs->priv_data; 2814 errcode_t retval; 2815 blk64_t new_block; 2816 2817 if (ctx->block_found_map) { 2818 retval = ext2fs_new_block2(fs, goal, ctx->block_found_map, 2819 &new_block); 2820 if (retval) 2821 return retval; 2822 if (fs->block_map) { 2823 ext2fs_mark_block_bitmap2(fs->block_map, new_block); 2824 ext2fs_mark_bb_dirty(fs); 2825 } 2826 } else { 2827 if (!fs->block_map) { 2828 retval = ext2fs_read_block_bitmap(fs); 2829 if (retval) 2830 return retval; 2831 } 2832 2833 retval = ext2fs_new_block2(fs, goal, 0, &new_block); 2834 if (retval) 2835 return retval; 2836 } 2837 2838 *ret = new_block; 2839 return (0); 2840} 2841 2842static void e2fsck_block_alloc_stats(ext2_filsys fs, blk64_t blk, int inuse) 2843{ 2844 e2fsck_t ctx = (e2fsck_t) fs->priv_data; 2845 2846 if (ctx->block_found_map) { 2847 if (inuse > 0) 2848 ext2fs_mark_block_bitmap2(ctx->block_found_map, blk); 2849 else 2850 ext2fs_unmark_block_bitmap2(ctx->block_found_map, blk); 2851 } 2852} 2853 2854void e2fsck_use_inode_shortcuts(e2fsck_t ctx, int use_shortcuts) 2855{ 2856 ext2_filsys fs = ctx->fs; 2857 2858 if (use_shortcuts) { 2859 fs->get_blocks = pass1_get_blocks; 2860 fs->check_directory = pass1_check_directory; 2861 fs->read_inode = pass1_read_inode; 2862 fs->write_inode = pass1_write_inode; 2863 ctx->stashed_ino = 0; 2864 ext2fs_set_alloc_block_callback(fs, e2fsck_get_alloc_block, 2865 0); 2866 ext2fs_set_block_alloc_stats_callback(fs, 2867 e2fsck_block_alloc_stats, 2868 0); 2869 } else { 2870 fs->get_blocks = 0; 2871 fs->check_directory = 0; 2872 fs->read_inode = 0; 2873 fs->write_inode = 0; 2874 } 2875} 2876