main.c revision 1.87
1 /* $NetBSD: main.c,v 1.87 2020/04/05 15:25:40 joerg Exp $ */ 2 3 /* 4 * Copyright (c) 1980, 1986, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #ifndef lint 34 __COPYRIGHT("@(#) Copyright (c) 1980, 1986, 1993\ 35 The Regents of the University of California. All rights reserved."); 36 #endif /* not lint */ 37 38 #ifndef lint 39 #if 0 40 static char sccsid[] = "@(#)main.c 8.6 (Berkeley) 5/14/95"; 41 #else 42 __RCSID("$NetBSD: main.c,v 1.87 2020/04/05 15:25:40 joerg Exp $"); 43 #endif 44 #endif /* not lint */ 45 46 #include <sys/param.h> 47 #include <sys/time.h> 48 #include <sys/mount.h> 49 #include <sys/resource.h> 50 51 #include <ufs/ufs/dinode.h> 52 #include <ufs/ufs/ufsmount.h> 53 #include <ufs/ffs/fs.h> 54 #include <ufs/ffs/ffs_extern.h> 55 56 #include <ctype.h> 57 #include <err.h> 58 #include <errno.h> 59 #include <fstab.h> 60 #include <string.h> 61 #include <time.h> 62 #include <stdio.h> 63 #include <stdlib.h> 64 #include <unistd.h> 65 #include <signal.h> 66 67 #include "fsck.h" 68 #include "extern.h" 69 #include "fsutil.h" 70 #include "exitvalues.h" 71 #include "snapshot.h" 72 73 struct bufarea bufhead; 74 struct bufarea sblk; 75 struct bufarea asblk; 76 struct bufarea cgblk; 77 struct bufarea appleufsblk; 78 struct bufarea *pdirbp; 79 struct bufarea *pbp; 80 struct fs *sblock; 81 struct fs *altsblock; 82 struct cg *cgrp; 83 struct fs *sblocksave; 84 struct dups *duplist; 85 struct dups *muldup; 86 struct zlncnt *zlnhead; 87 struct inoinfo **inphead, **inpsort; 88 long numdirs, dirhash, listmax, inplast; 89 struct uquot_hash *uquot_user_hash; 90 struct uquot_hash *uquot_group_hash; 91 uint8_t q2h_hash_shift; 92 uint16_t q2h_hash_mask; 93 struct inostatlist *inostathead; 94 long dev_bsize; 95 long secsize; 96 char nflag; 97 char yflag; 98 int Uflag; 99 int bflag; 100 int debug; 101 int zflag; 102 int cvtlevel; 103 int doinglevel1; 104 int doinglevel2; 105 int newinofmt; 106 char usedsoftdep; 107 int preen; 108 int forceimage; 109 int is_ufs2; 110 int markclean; 111 char havesb; 112 char skipclean; 113 int fsmodified; 114 int fsreadfd; 115 int fswritefd; 116 int rerun; 117 char resolved; 118 int endian; 119 int doswap; 120 int needswap; 121 int do_blkswap; 122 int do_dirswap; 123 int isappleufs; 124 daddr_t maxfsblock; 125 char *blockmap; 126 ino_t maxino; 127 int dirblksiz; 128 daddr_t n_blks; 129 ino_t n_files; 130 long countdirs; 131 int got_siginfo; 132 struct ufs1_dinode ufs1_zino; 133 struct ufs2_dinode ufs2_zino; 134 135 int progress = 0; 136 137 static int argtoi(int, const char *, const char *, int); 138 static int checkfilesys(const char *, const char *, int); 139 __dead static void usage(void); 140 141 int 142 main(int argc, char *argv[]) 143 { 144 struct rlimit r; 145 int ch; 146 int ret = FSCK_EXIT_OK; 147 char *snap_backup = NULL; 148 int snap_internal = 0; 149 150 ckfinish = ckfini; 151 152 if (getrlimit(RLIMIT_DATA, &r) == 0) { 153 r.rlim_cur = r.rlim_max; 154 (void) setrlimit(RLIMIT_DATA, &r); 155 } 156 sync(); 157 skipclean = 1; 158 markclean = 1; 159 forceimage = 0; 160 #ifndef NO_FFS_EI 161 endian = 0; 162 #endif 163 #ifndef NO_APPLE_UFS 164 isappleufs = 0; 165 #endif 166 while ((ch = getopt(argc, argv, "aB:b:c:dFfm:npPqUyx:Xz")) != -1) { 167 switch (ch) { 168 #ifndef NO_APPLE_UFS 169 case 'a': 170 isappleufs = 1; 171 break; 172 #endif 173 174 #ifndef NO_FFS_EI 175 case 'B': 176 if (strcmp(optarg, "be") == 0) 177 endian = BIG_ENDIAN; 178 else if (strcmp(optarg, "le") == 0) 179 endian = LITTLE_ENDIAN; 180 else 181 usage(); 182 break; 183 #endif 184 185 case 'b': 186 skipclean = 0; 187 bflag = argtoi('b', "number", optarg, 10); 188 printf("Alternate super block location: %d\n", bflag); 189 break; 190 191 case 'c': 192 skipclean = 0; 193 cvtlevel = argtoi('c', "conversion level", optarg, 10); 194 if (cvtlevel > 4) { 195 cvtlevel = 4; 196 warnx("Using maximum conversion level of %d", 197 cvtlevel); 198 } 199 break; 200 201 case 'd': 202 debug++; 203 break; 204 205 case 'F': 206 forceimage = 1; 207 break; 208 209 case 'f': 210 skipclean = 0; 211 break; 212 213 case 'm': 214 lfmode = argtoi('m', "mode", optarg, 8); 215 if (lfmode &~ 07777) 216 errx(FSCK_EXIT_USAGE, "bad mode to -m: %o", 217 lfmode); 218 printf("** lost+found creation mode %o\n", lfmode); 219 break; 220 221 case 'n': 222 nflag++; 223 yflag = 0; 224 break; 225 226 case 'p': 227 preen++; 228 break; 229 230 case 'P': 231 progress = 1; 232 break; 233 234 case 'q': 235 quiet++; 236 break; 237 #ifndef SMALL 238 case 'U': 239 Uflag++; 240 break; 241 #endif 242 243 case 'x': 244 snap_backup = optarg; 245 break; 246 247 case 'X': 248 snap_internal = 1; 249 break; 250 251 case 'y': 252 yflag++; 253 nflag = 0; 254 break; 255 256 case 'z': 257 zflag++; 258 break; 259 260 default: 261 usage(); 262 } 263 } 264 265 if (snap_backup || snap_internal) { 266 if (!nflag || yflag) { 267 warnx("Cannot use -x or -X without -n"); 268 snap_backup = NULL; 269 snap_internal = 0; 270 } 271 } 272 273 274 argc -= optind; 275 argv += optind; 276 277 if (!argc) 278 usage(); 279 280 if (debug) 281 progress = 0; 282 283 if (signal(SIGINT, SIG_IGN) != SIG_IGN) 284 (void)signal(SIGINT, catch); 285 if (preen) 286 (void)signal(SIGQUIT, catchquit); 287 #ifdef PROGRESS 288 if (progress) { 289 progress_ttywidth(0); 290 (void)signal(SIGWINCH, progress_ttywidth); 291 } 292 #endif /* ! PROGRESS */ 293 signal(SIGINFO, infohandler); 294 295 while (argc-- > 0) { 296 int nret; 297 char *path; 298 299 if (!forceimage) 300 path = strdup(blockcheck(*argv)); 301 else 302 path = strdup(*argv); 303 304 if (path == NULL) 305 pfatal("Can't check %s\n", *argv); 306 307 if (snap_backup || snap_internal) { 308 char *snap_dev; 309 int snapfd; 310 311 snapfd = snap_open(*argv, snap_backup, NULL, &snap_dev); 312 if (snapfd < 0) { 313 warn("can't take snapshot of %s", *argv); 314 goto next; 315 } 316 nret = checkfilesys(blockcheck(snap_dev), path, 0); 317 if (ret < nret) 318 ret = nret; 319 close(snapfd); 320 } else { 321 nret = checkfilesys(path, path, 0); 322 if (ret < nret) 323 ret = nret; 324 } 325 next: 326 free(path); 327 argv++; 328 } 329 330 return returntosingle ? FSCK_EXIT_UNRESOLVED : ret; 331 } 332 333 static int 334 argtoi(int flag, const char *req, const char *str, int base) 335 { 336 char *cp; 337 int ret; 338 339 ret = (int)strtol(str, &cp, base); 340 if (cp == str || *cp) 341 errx(FSCK_EXIT_USAGE, "-%c flag requires a %s", 342 flag, req); 343 return (ret); 344 } 345 346 /* 347 * Check the specified filesystem. 348 */ 349 /* ARGSUSED */ 350 static int 351 checkfilesys(const char *filesys, const char *origfs, int child) 352 { 353 daddr_t n_ffree, n_bfree; 354 struct dups *dp; 355 struct zlncnt *zlnp; 356 int cylno; 357 #ifdef LITE2BORKEN 358 int flags; 359 #endif 360 #ifdef PROGRESS 361 /* 362 * In prune mode, how far does the progress bar travel during 363 * each pass? (In non-prune mode, each pass has a separate 364 * progress bar that travels from 0 to 100%.) 365 * 366 * The numbers below are percentages, intended to correspond 367 * roughly to the cumulative time up to the end of each pass. 368 * They don't have to be accurate. In reality, on a large 369 * file system, Pass 1 and Pass 2 together are likely to use 370 * significantly more than the 95% reflected below, so users 371 * will get a pleasant surprise when the last 5% of the progress 372 * bar runs more quickly than they had expected. 373 */ 374 static int progress_limits[] = {0, 20, 95, 96, 97, 100}; 375 #endif /* PROGRESS */ 376 377 if (preen && child) 378 (void)signal(SIGQUIT, voidquit); 379 setcdevname(filesys, preen); 380 if (debug && preen) 381 pwarn("starting\n"); 382 switch (setup(filesys, origfs)) { 383 case 0: 384 if (preen) 385 pfatal("CAN'T CHECK FILE SYSTEM."); 386 /* fall through */ 387 case -1: 388 return FSCK_EXIT_OK; 389 } 390 /* 391 * Cleared if any questions answered no. Used to decide if 392 * the superblock should be marked clean. 393 */ 394 resolved = 1; 395 396 #ifdef PROGRESS 397 progress_switch(progress); 398 progress_init(); 399 #endif /* PROGRESS */ 400 401 /* 402 * 1: scan inodes tallying blocks used 403 */ 404 if (preen == 0) { 405 pwarn("** Last Mounted on %s\n", sblock->fs_fsmnt); 406 if (hotroot()) 407 pwarn("** Root file system\n"); 408 pwarn("** Phase 1 - Check Blocks and Sizes\n"); 409 } 410 #ifdef PROGRESS 411 if (preen) 412 progress_setrange(0, progress_limits[1]); 413 #endif /* PROGRESS */ 414 pass1(); 415 416 /* 417 * 1b: locate first references to duplicates, if any 418 */ 419 if (duplist) { 420 if (preen) 421 pfatal("INTERNAL ERROR: dups with -p\n"); 422 if (usedsoftdep) 423 pfatal("INTERNAL ERROR: dups with softdep\n"); 424 pwarn("** Phase 1b - Rescan For More DUPS\n"); 425 pass1b(); 426 } 427 428 /* 429 * 2: traverse directories from root to mark all connected directories 430 */ 431 if (preen == 0) 432 pwarn("** Phase 2 - Check Pathnames\n"); 433 #ifdef PROGRESS 434 if (preen) 435 progress_sethighlim(progress_limits[2]); 436 #endif /* PROGRESS */ 437 pass2(); 438 439 /* 440 * 3: scan inodes looking for disconnected directories 441 */ 442 if (preen == 0) 443 pwarn("** Phase 3 - Check Connectivity\n"); 444 #ifdef PROGRESS 445 if (preen) 446 progress_sethighlim(progress_limits[3]); 447 #endif /* PROGRESS */ 448 pass3(); 449 450 /* 451 * 4: scan inodes looking for disconnected files; check reference counts 452 */ 453 if (preen == 0) 454 pwarn("** Phase 4 - Check Reference Counts\n"); 455 #ifdef PROGRESS 456 if (preen) 457 progress_sethighlim(progress_limits[4]); 458 #endif /* PROGRESS */ 459 pass4(); 460 461 /* 462 * 5: check and repair resource counts in cylinder groups 463 */ 464 if (preen == 0) 465 pwarn("** Phase 5 - Check Cyl groups\n"); 466 #ifdef PROGRESS 467 if (preen) 468 progress_sethighlim(progress_limits[5]); 469 #endif /* PROGRESS */ 470 pass5(); 471 if (uquot_user_hash != NULL) { 472 if (preen == 0) 473 pwarn("** Phase 6 - Check Quotas\n"); 474 pass6(); 475 } 476 477 /* 478 * print out summary statistics 479 */ 480 n_ffree = sblock->fs_cstotal.cs_nffree; 481 n_bfree = sblock->fs_cstotal.cs_nbfree; 482 pwarn("%llu files, %lld used, %lld free ", 483 (unsigned long long)n_files, (long long)n_blks, 484 (long long)(n_ffree + sblock->fs_frag * n_bfree)); 485 printf("(%lld frags, %lld blocks, %lld.%lld%% fragmentation)\n", 486 (long long)n_ffree, (long long)n_bfree, 487 (long long)(n_ffree * 100 / (daddr_t)sblock->fs_dsize), 488 (long long)(((n_ffree * 1000 + (daddr_t)sblock->fs_dsize / 2) 489 / (daddr_t)sblock->fs_dsize) % 10)); 490 if (debug && 491 (n_files -= maxino - UFS_ROOTINO - sblock->fs_cstotal.cs_nifree)) 492 printf("%llu files missing\n", (unsigned long long)n_files); 493 if (debug) { 494 n_blks += sblock->fs_ncg * 495 (cgdmin(sblock, 0) - cgsblock(sblock, 0)); 496 n_blks += cgsblock(sblock, 0) - cgbase(sblock, 0); 497 n_blks += howmany(sblock->fs_cssize, sblock->fs_fsize); 498 if (n_blks -= maxfsblock - (n_ffree + sblock->fs_frag * n_bfree)) 499 printf("%lld blocks missing\n", (long long)n_blks); 500 if (duplist != NULL) { 501 printf("The following duplicate blocks remain:"); 502 for (dp = duplist; dp; dp = dp->next) 503 printf(" %lld,", (long long)dp->dup); 504 printf("\n"); 505 } 506 if (zlnhead != NULL) { 507 printf("The following zero link count inodes remain:"); 508 for (zlnp = zlnhead; zlnp; zlnp = zlnp->next) 509 printf(" %llu,", 510 (unsigned long long)zlnp->zlncnt); 511 printf("\n"); 512 } 513 } 514 zlnhead = (struct zlncnt *)0; 515 duplist = (struct dups *)0; 516 muldup = (struct dups *)0; 517 inocleanup(); 518 if (fsmodified) { 519 sblock->fs_time = time(NULL); 520 sbdirty(); 521 } 522 if (rerun) 523 markclean = 0; 524 #if LITE2BORKEN 525 if (!hotroot()) { 526 ckfini(1); 527 } else { 528 struct statvfs stfs_buf; 529 /* 530 * Check to see if root is mounted read-write. 531 */ 532 if (statvfs("/", &stfs_buf) == 0) 533 flags = stfs_buf.f_flag; 534 else 535 flags = 0; 536 if (markclean) 537 markclean = flags & MNT_RDONLY; 538 ckfini(1); 539 } 540 #else 541 ckfini(1); 542 #endif 543 for (cylno = 0; cylno < sblock->fs_ncg; cylno++) 544 if (inostathead[cylno].il_stat != NULL) 545 free(inostathead[cylno].il_stat); 546 free(inostathead); 547 inostathead = NULL; 548 549 if (!resolved || rerun) { 550 pwarn("\n***** UNRESOLVED INCONSISTENCIES REMAIN *****\n"); 551 returntosingle = 1; 552 } 553 if (!fsmodified) 554 return FSCK_EXIT_OK; 555 if (!preen) 556 pwarn("\n***** FILE SYSTEM WAS MODIFIED *****\n"); 557 if (rerun) 558 pwarn("\n***** PLEASE RERUN FSCK *****\n"); 559 if (hotroot()) { 560 struct statvfs stfs_buf; 561 /* 562 * We modified the root. Do a mount update on 563 * it, unless it is read-write, so we can continue. 564 */ 565 if (statvfs("/", &stfs_buf) == 0) { 566 long flags = stfs_buf.f_flag; 567 struct ufs_args args; 568 569 if (flags & MNT_RDONLY) { 570 args.fspec = 0; 571 flags |= MNT_UPDATE | MNT_RELOAD; 572 if (mount(MOUNT_FFS, "/", flags, 573 &args, sizeof args) == 0) 574 return FSCK_EXIT_OK; 575 } 576 } 577 if (!preen) 578 pwarn("\n***** REBOOT NOW *****\n"); 579 sync(); 580 return FSCK_EXIT_ROOT_CHANGED; 581 } 582 return FSCK_EXIT_OK; 583 } 584 585 static void 586 usage(void) 587 { 588 589 (void) fprintf(stderr, 590 "usage: %s [-" 591 #ifndef NO_APPLE_UFS 592 "a" 593 #endif 594 "dFfPpqUX] " 595 #ifndef NO_FFS_EI 596 "[-B byteorder] " 597 #endif 598 "[-b block] [-c level] [-m mode]\n" 599 "\t[-x snap-backup] [-y | -n] filesystem ...\n", 600 getprogname()); 601 exit(FSCK_EXIT_USAGE); 602 } 603
Indexes created Tue Sep 30 11:09:46 GMT 2025