main.c revision 1.92
1 /* $NetBSD: main.c,v 1.92 2023/07/04 20:40:53 riastradh 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 1.92 2023/07/04 20:40:53 riastradh 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 doing2ea; 106 int doing2noea; 107 int newinofmt; 108 char usedsoftdep; 109 int preen; 110 int forceimage; 111 int is_ufs2; 112 int is_ufs2ea; 113 int markclean; 114 char havesb; 115 char skipclean; 116 int fsmodified; 117 int fsreadfd; 118 int fswritefd; 119 int rerun; 120 char resolved; 121 #ifndef NO_FFS_EI 122 int endian; 123 int doswap; 124 int needswap; 125 int do_blkswap; 126 int do_dirswap; 127 #endif 128 #ifndef NO_APPLE_UFS 129 int isappleufs; 130 #endif 131 daddr_t maxfsblock; 132 char *blockmap; 133 ino_t maxino; 134 int dirblksiz; 135 daddr_t n_blks; 136 ino_t n_files; 137 long countdirs; 138 int got_siginfo; 139 struct ufs1_dinode ufs1_zino; 140 struct ufs2_dinode ufs2_zino; 141 142 int progress = 0; 143 144 static int argtoi(int, const char *, const char *, int); 145 static int checkfilesys(const char *, const char *, int); 146 __dead static void usage(void); 147 148 int 149 main(int argc, char *argv[]) 150 { 151 struct rlimit r; 152 int ch; 153 int ret = FSCK_EXIT_OK; 154 char *snap_backup = NULL; 155 int snap_internal = 0; 156 157 ckfinish = ckfini; 158 159 if (getrlimit(RLIMIT_DATA, &r) == 0) { 160 r.rlim_cur = r.rlim_max; 161 (void) setrlimit(RLIMIT_DATA, &r); 162 } 163 sync(); 164 skipclean = 1; 165 markclean = 1; 166 forceimage = 0; 167 #ifndef NO_FFS_EI 168 endian = 0; 169 #endif 170 #ifndef NO_APPLE_UFS 171 isappleufs = 0; 172 #endif 173 while ((ch = getopt(argc, argv, "aB:b:c:dFfm:npPqUyx:Xz")) != -1) { 174 switch (ch) { 175 #ifndef NO_APPLE_UFS 176 case 'a': 177 isappleufs = 1; 178 break; 179 #endif 180 181 #ifndef NO_FFS_EI 182 case 'B': 183 if (strcmp(optarg, "be") == 0) 184 endian = BIG_ENDIAN; 185 else if (strcmp(optarg, "le") == 0) 186 endian = LITTLE_ENDIAN; 187 else 188 usage(); 189 break; 190 #endif 191 192 case 'b': 193 skipclean = 0; 194 bflag = argtoi('b', "number", optarg, 10); 195 printf("Alternate super block location: %d\n", bflag); 196 break; 197 198 case 'c': 199 skipclean = 0; 200 if (strcmp(optarg, "ea") == 0) { 201 doing2ea = 1; 202 break; 203 } 204 if (strcmp(optarg, "no-ea") == 0) { 205 doing2noea = 1; 206 break; 207 } 208 cvtlevel = argtoi('c', "conversion level", optarg, 10); 209 if (cvtlevel > 4) { 210 cvtlevel = 4; 211 warnx("Using maximum conversion level of %d", 212 cvtlevel); 213 } 214 break; 215 216 case 'd': 217 debug++; 218 break; 219 220 case 'F': 221 forceimage = 1; 222 break; 223 224 case 'f': 225 skipclean = 0; 226 break; 227 228 case 'm': 229 lfmode = argtoi('m', "mode", optarg, 8); 230 if (lfmode &~ 07777) 231 errx(FSCK_EXIT_USAGE, "bad mode to -m: %o", 232 lfmode); 233 printf("** lost+found creation mode %o\n", lfmode); 234 break; 235 236 case 'n': 237 nflag++; 238 yflag = 0; 239 break; 240 241 case 'p': 242 preen++; 243 break; 244 245 case 'P': 246 progress = 1; 247 break; 248 249 case 'q': 250 quiet++; 251 break; 252 #ifndef SMALL 253 case 'U': 254 Uflag++; 255 break; 256 #endif 257 258 case 'x': 259 snap_backup = optarg; 260 break; 261 262 case 'X': 263 snap_internal = 1; 264 break; 265 266 case 'y': 267 yflag++; 268 nflag = 0; 269 break; 270 271 case 'z': 272 zflag++; 273 break; 274 275 default: 276 usage(); 277 } 278 } 279 280 if (snap_backup || snap_internal) { 281 if (!nflag || yflag) { 282 warnx("Cannot use -x or -X without -n"); 283 snap_backup = NULL; 284 snap_internal = 0; 285 } 286 } 287 288 argc -= optind; 289 argv += optind; 290 291 if (!argc) 292 usage(); 293 294 if (debug) 295 progress = 0; 296 297 if (signal(SIGINT, SIG_IGN) != SIG_IGN) 298 (void)signal(SIGINT, catch); 299 if (preen) 300 (void)signal(SIGQUIT, catchquit); 301 #ifdef PROGRESS 302 if (progress) { 303 progress_ttywidth(0); 304 (void)signal(SIGWINCH, progress_ttywidth); 305 } 306 #endif /* ! PROGRESS */ 307 signal(SIGINFO, infohandler); 308 309 while (argc-- > 0) { 310 int nret; 311 char *path; 312 313 if (!forceimage) 314 path = strdup(blockcheck(*argv)); 315 else 316 path = strdup(*argv); 317 318 if (path == NULL) 319 pfatal("Can't check %s\n", *argv); 320 321 if (snap_backup || snap_internal) { 322 char *snap_dev; 323 int snapfd; 324 325 snapfd = snap_open(*argv, snap_backup, NULL, &snap_dev); 326 if (snapfd < 0) { 327 warn("can't take snapshot of %s", *argv); 328 goto next; 329 } 330 nret = checkfilesys(blockcheck(snap_dev), path, 0); 331 if (ret < nret) 332 ret = nret; 333 close(snapfd); 334 } else { 335 nret = checkfilesys(path, path, 0); 336 if (ret < nret) 337 ret = nret; 338 } 339 next: 340 free(path); 341 argv++; 342 } 343 344 return returntosingle ? FSCK_EXIT_UNRESOLVED : ret; 345 } 346 347 static int 348 argtoi(int flag, const char *req, const char *str, int base) 349 { 350 char *cp; 351 int ret; 352 353 ret = (int)strtol(str, &cp, base); 354 if (cp == str || *cp) 355 errx(FSCK_EXIT_USAGE, "-%c flag requires a %s", 356 flag, req); 357 return (ret); 358 } 359 360 /* 361 * Check the specified filesystem. 362 */ 363 /* ARGSUSED */ 364 static int 365 checkfilesys(const char *filesys, const char *origfs, int child) 366 { 367 daddr_t n_ffree, n_bfree; 368 struct dups *dp; 369 struct zlncnt *zlnp; 370 uint32_t cylno; 371 #ifdef LITE2BORKEN 372 int flags; 373 #endif 374 #ifdef PROGRESS 375 /* 376 * In prune mode, how far does the progress bar travel during 377 * each pass? (In non-prune mode, each pass has a separate 378 * progress bar that travels from 0 to 100%.) 379 * 380 * The numbers below are percentages, intended to correspond 381 * roughly to the cumulative time up to the end of each pass. 382 * They don't have to be accurate. In reality, on a large 383 * file system, Pass 1 and Pass 2 together are likely to use 384 * significantly more than the 95% reflected below, so users 385 * will get a pleasant surprise when the last 5% of the progress 386 * bar runs more quickly than they had expected. 387 */ 388 static int progress_limits[] = {0, 20, 95, 96, 97, 100}; 389 #endif /* PROGRESS */ 390 391 if (preen && child) 392 (void)signal(SIGQUIT, voidquit); 393 setcdevname(filesys, preen); 394 if (debug && preen) 395 pwarn("starting\n"); 396 switch (setup(filesys, origfs)) { 397 case 0: 398 if (preen) 399 pfatal("CAN'T CHECK FILE SYSTEM."); 400 /* fall through */ 401 case -1: 402 return FSCK_EXIT_OK; 403 } 404 /* 405 * Cleared if any questions answered no. Used to decide if 406 * the superblock should be marked clean. 407 */ 408 resolved = 1; 409 410 #ifdef PROGRESS 411 progress_switch(progress); 412 progress_init(); 413 #endif /* PROGRESS */ 414 415 /* 416 * 1: scan inodes tallying blocks used 417 */ 418 if (preen == 0) { 419 pwarn("** Last Mounted on %s\n", sblock->fs_fsmnt); 420 if (hotroot()) 421 pwarn("** Root file system\n"); 422 pwarn("** Phase 1 - Check Blocks and Sizes\n"); 423 } 424 #ifdef PROGRESS 425 if (preen) 426 progress_setrange(0, progress_limits[1]); 427 #endif /* PROGRESS */ 428 pass1(); 429 430 /* 431 * 1b: locate first references to duplicates, if any 432 */ 433 if (duplist) { 434 if (preen) 435 pfatal("INTERNAL ERROR: dups with -p\n"); 436 if (usedsoftdep) 437 pfatal("INTERNAL ERROR: dups with softdep\n"); 438 pwarn("** Phase 1b - Rescan For More DUPS\n"); 439 pass1b(); 440 } 441 442 /* 443 * 2: traverse directories from root to mark all connected directories 444 */ 445 if (preen == 0) 446 pwarn("** Phase 2 - Check Pathnames\n"); 447 #ifdef PROGRESS 448 if (preen) 449 progress_sethighlim(progress_limits[2]); 450 #endif /* PROGRESS */ 451 pass2(); 452 453 /* 454 * 3: scan inodes looking for disconnected directories 455 */ 456 if (preen == 0) 457 pwarn("** Phase 3 - Check Connectivity\n"); 458 #ifdef PROGRESS 459 if (preen) 460 progress_sethighlim(progress_limits[3]); 461 #endif /* PROGRESS */ 462 pass3(); 463 464 /* 465 * 4: scan inodes looking for disconnected files; check reference counts 466 */ 467 if (preen == 0) 468 pwarn("** Phase 4 - Check Reference Counts\n"); 469 #ifdef PROGRESS 470 if (preen) 471 progress_sethighlim(progress_limits[4]); 472 #endif /* PROGRESS */ 473 pass4(); 474 475 /* 476 * 5: check and repair resource counts in cylinder groups 477 */ 478 if (preen == 0) 479 pwarn("** Phase 5 - Check Cyl groups\n"); 480 #ifdef PROGRESS 481 if (preen) 482 progress_sethighlim(progress_limits[5]); 483 #endif /* PROGRESS */ 484 pass5(); 485 if (uquot_user_hash != NULL) { 486 if (preen == 0) 487 pwarn("** Phase 6 - Check Quotas\n"); 488 pass6(); 489 } 490 491 /* 492 * print out summary statistics 493 */ 494 n_ffree = sblock->fs_cstotal.cs_nffree; 495 n_bfree = sblock->fs_cstotal.cs_nbfree; 496 pwarn("%llu files, %lld used, %lld free ", 497 (unsigned long long)n_files, (long long)n_blks, 498 (long long)(n_ffree + sblock->fs_frag * n_bfree)); 499 printf("(%lld frags, %lld blocks, %lld.%lld%% fragmentation)\n", 500 (long long)n_ffree, (long long)n_bfree, 501 (long long)(n_ffree * 100 / (daddr_t)sblock->fs_dsize), 502 (long long)(((n_ffree * 1000 + (daddr_t)sblock->fs_dsize / 2) 503 / (daddr_t)sblock->fs_dsize) % 10)); 504 if (debug && 505 (n_files -= maxino - UFS_ROOTINO - sblock->fs_cstotal.cs_nifree)) 506 printf("%llu files missing\n", (unsigned long long)n_files); 507 if (debug) { 508 n_blks += sblock->fs_ncg * 509 (cgdmin(sblock, 0) - cgsblock(sblock, 0)); 510 n_blks += cgsblock(sblock, 0) - cgbase(sblock, 0); 511 n_blks += howmany(sblock->fs_cssize, sblock->fs_fsize); 512 if (n_blks -= maxfsblock - (n_ffree + sblock->fs_frag * n_bfree)) 513 printf("%lld blocks missing\n", (long long)n_blks); 514 if (duplist != NULL) { 515 printf("The following duplicate blocks remain:"); 516 for (dp = duplist; dp; dp = dp->next) 517 printf(" %lld,", (long long)dp->dup); 518 printf("\n"); 519 } 520 if (zlnhead != NULL) { 521 printf("The following zero link count inodes remain:"); 522 for (zlnp = zlnhead; zlnp; zlnp = zlnp->next) 523 printf(" %llu,", 524 (unsigned long long)zlnp->zlncnt); 525 printf("\n"); 526 } 527 } 528 zlnhead = (struct zlncnt *)0; 529 duplist = (struct dups *)0; 530 muldup = (struct dups *)0; 531 inocleanup(); 532 if (fsmodified) { 533 sblock->fs_time = time(NULL); 534 sbdirty(); 535 } 536 if (rerun) 537 markclean = 0; 538 #if LITE2BORKEN 539 if (!hotroot()) { 540 ckfini(1); 541 } else { 542 struct statvfs stfs_buf; 543 /* 544 * Check to see if root is mounted read-write. 545 */ 546 if (statvfs("/", &stfs_buf) == 0) 547 flags = stfs_buf.f_flag; 548 else 549 flags = 0; 550 if (markclean) 551 markclean = flags & MNT_RDONLY; 552 ckfini(1); 553 } 554 #else 555 ckfini(1); 556 #endif 557 for (cylno = 0; cylno < sblock->fs_ncg; cylno++) 558 if (inostathead[cylno].il_stat != NULL) 559 free(inostathead[cylno].il_stat); 560 free(inostathead); 561 inostathead = NULL; 562 563 if (!resolved || rerun) { 564 pwarn("\n***** UNRESOLVED INCONSISTENCIES REMAIN *****\n"); 565 returntosingle = 1; 566 } 567 if (!fsmodified) 568 return FSCK_EXIT_OK; 569 if (!preen) 570 pwarn("\n***** FILE SYSTEM WAS MODIFIED *****\n"); 571 if (rerun) 572 pwarn("\n***** PLEASE RERUN FSCK *****\n"); 573 if (hotroot()) { 574 struct statvfs stfs_buf; 575 /* 576 * We modified the root. Do a mount update on 577 * it, unless it is read-write, so we can continue. 578 */ 579 if (statvfs("/", &stfs_buf) == 0) { 580 long flags = stfs_buf.f_flag; 581 struct ufs_args args; 582 583 if (flags & MNT_RDONLY) { 584 args.fspec = 0; 585 flags |= MNT_UPDATE | MNT_RELOAD; 586 if (mount(MOUNT_FFS, "/", flags, 587 &args, sizeof args) == 0) 588 return FSCK_EXIT_OK; 589 } 590 } 591 if (!preen) 592 pwarn("\n***** REBOOT NOW *****\n"); 593 sync(); 594 return FSCK_EXIT_ROOT_CHANGED; 595 } 596 return FSCK_EXIT_OK; 597 } 598 599 static void 600 usage(void) 601 { 602 603 (void) fprintf(stderr, 604 "usage: %s [-" 605 #ifndef NO_APPLE_UFS 606 "a" 607 #endif 608 "dFfPpqUX] " 609 #ifndef NO_FFS_EI 610 "[-B byteorder] " 611 #endif 612 "[-b block] [-c level] [-m mode]\n" 613 "\t[-x snap-backup] [-y | -n] filesystem ...\n", 614 getprogname()); 615 exit(FSCK_EXIT_USAGE); 616 } 617
Indexes created Tue Sep 30 07:10:03 GMT 2025