main.c revision 1.86
1 /* $NetBSD: main.c,v 1.86 2019/08/15 03:10:42 kamil 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 1.86 2019/08/15 03:10:42 kamil 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 int progress = 0; 74 75 static int argtoi(int, const char *, const char *, int); 76 static int checkfilesys(const char *, const char *, int); 77 __dead static void usage(void); 78 79 int 80 main(int argc, char *argv[]) 81 { 82 struct rlimit r; 83 int ch; 84 int ret = FSCK_EXIT_OK; 85 char *snap_backup = NULL; 86 int snap_internal = 0; 87 88 ckfinish = ckfini; 89 90 if (getrlimit(RLIMIT_DATA, &r) == 0) { 91 r.rlim_cur = r.rlim_max; 92 (void) setrlimit(RLIMIT_DATA, &r); 93 } 94 sync(); 95 skipclean = 1; 96 markclean = 1; 97 forceimage = 0; 98 #ifndef NO_FFS_EI 99 endian = 0; 100 #endif 101 #ifndef NO_APPLE_UFS 102 isappleufs = 0; 103 #endif 104 while ((ch = getopt(argc, argv, "aB:b:c:dFfm:npPqUyx:Xz")) != -1) { 105 switch (ch) { 106 #ifndef NO_APPLE_UFS 107 case 'a': 108 isappleufs = 1; 109 break; 110 #endif 111 112 #ifndef NO_FFS_EI 113 case 'B': 114 if (strcmp(optarg, "be") == 0) 115 endian = BIG_ENDIAN; 116 else if (strcmp(optarg, "le") == 0) 117 endian = LITTLE_ENDIAN; 118 else 119 usage(); 120 break; 121 #endif 122 123 case 'b': 124 skipclean = 0; 125 bflag = argtoi('b', "number", optarg, 10); 126 printf("Alternate super block location: %d\n", bflag); 127 break; 128 129 case 'c': 130 skipclean = 0; 131 cvtlevel = argtoi('c', "conversion level", optarg, 10); 132 if (cvtlevel > 4) { 133 cvtlevel = 4; 134 warnx("Using maximum conversion level of %d", 135 cvtlevel); 136 } 137 break; 138 139 case 'd': 140 debug++; 141 break; 142 143 case 'F': 144 forceimage = 1; 145 break; 146 147 case 'f': 148 skipclean = 0; 149 break; 150 151 case 'm': 152 lfmode = argtoi('m', "mode", optarg, 8); 153 if (lfmode &~ 07777) 154 errx(FSCK_EXIT_USAGE, "bad mode to -m: %o", 155 lfmode); 156 printf("** lost+found creation mode %o\n", lfmode); 157 break; 158 159 case 'n': 160 nflag++; 161 yflag = 0; 162 break; 163 164 case 'p': 165 preen++; 166 break; 167 168 case 'P': 169 progress = 1; 170 break; 171 172 case 'q': 173 quiet++; 174 break; 175 #ifndef SMALL 176 case 'U': 177 Uflag++; 178 break; 179 #endif 180 181 case 'x': 182 snap_backup = optarg; 183 break; 184 185 case 'X': 186 snap_internal = 1; 187 break; 188 189 case 'y': 190 yflag++; 191 nflag = 0; 192 break; 193 194 case 'z': 195 zflag++; 196 break; 197 198 default: 199 usage(); 200 } 201 } 202 203 if (snap_backup || snap_internal) { 204 if (!nflag || yflag) { 205 warnx("Cannot use -x or -X without -n"); 206 snap_backup = NULL; 207 snap_internal = 0; 208 } 209 } 210 211 212 argc -= optind; 213 argv += optind; 214 215 if (!argc) 216 usage(); 217 218 if (debug) 219 progress = 0; 220 221 if (signal(SIGINT, SIG_IGN) != SIG_IGN) 222 (void)signal(SIGINT, catch); 223 if (preen) 224 (void)signal(SIGQUIT, catchquit); 225 #ifdef PROGRESS 226 if (progress) { 227 progress_ttywidth(0); 228 (void)signal(SIGWINCH, progress_ttywidth); 229 } 230 #endif /* ! PROGRESS */ 231 signal(SIGINFO, infohandler); 232 233 while (argc-- > 0) { 234 int nret; 235 char *path; 236 237 if (!forceimage) 238 path = strdup(blockcheck(*argv)); 239 else 240 path = strdup(*argv); 241 242 if (path == NULL) 243 pfatal("Can't check %s\n", *argv); 244 245 if (snap_backup || snap_internal) { 246 char *snap_dev; 247 int snapfd; 248 249 snapfd = snap_open(*argv, snap_backup, NULL, &snap_dev); 250 if (snapfd < 0) { 251 warn("can't take snapshot of %s", *argv); 252 goto next; 253 } 254 nret = checkfilesys(blockcheck(snap_dev), path, 0); 255 if (ret < nret) 256 ret = nret; 257 close(snapfd); 258 } else { 259 nret = checkfilesys(path, path, 0); 260 if (ret < nret) 261 ret = nret; 262 } 263 next: 264 free(path); 265 argv++; 266 } 267 268 return returntosingle ? FSCK_EXIT_UNRESOLVED : ret; 269 } 270 271 static int 272 argtoi(int flag, const char *req, const char *str, int base) 273 { 274 char *cp; 275 int ret; 276 277 ret = (int)strtol(str, &cp, base); 278 if (cp == str || *cp) 279 errx(FSCK_EXIT_USAGE, "-%c flag requires a %s", 280 flag, req); 281 return (ret); 282 } 283 284 /* 285 * Check the specified filesystem. 286 */ 287 /* ARGSUSED */ 288 static int 289 checkfilesys(const char *filesys, const char *origfs, int child) 290 { 291 daddr_t n_ffree, n_bfree; 292 struct dups *dp; 293 struct zlncnt *zlnp; 294 int cylno; 295 #ifdef LITE2BORKEN 296 int flags; 297 #endif 298 #ifdef PROGRESS 299 /* 300 * In prune mode, how far does the progress bar travel during 301 * each pass? (In non-prune mode, each pass has a separate 302 * progress bar that travels from 0 to 100%.) 303 * 304 * The numbers below are percentages, intended to correspond 305 * roughly to the cumulative time up to the end of each pass. 306 * They don't have to be accurate. In reality, on a large 307 * file system, Pass 1 and Pass 2 together are likely to use 308 * significantly more than the 95% reflected below, so users 309 * will get a pleasant surprise when the last 5% of the progress 310 * bar runs more quickly than they had expected. 311 */ 312 static int progress_limits[] = {0, 20, 95, 96, 97, 100}; 313 #endif /* PROGRESS */ 314 315 if (preen && child) 316 (void)signal(SIGQUIT, voidquit); 317 setcdevname(filesys, preen); 318 if (debug && preen) 319 pwarn("starting\n"); 320 switch (setup(filesys, origfs)) { 321 case 0: 322 if (preen) 323 pfatal("CAN'T CHECK FILE SYSTEM."); 324 /* fall through */ 325 case -1: 326 return FSCK_EXIT_OK; 327 } 328 /* 329 * Cleared if any questions answered no. Used to decide if 330 * the superblock should be marked clean. 331 */ 332 resolved = 1; 333 334 #ifdef PROGRESS 335 progress_switch(progress); 336 progress_init(); 337 #endif /* PROGRESS */ 338 339 /* 340 * 1: scan inodes tallying blocks used 341 */ 342 if (preen == 0) { 343 pwarn("** Last Mounted on %s\n", sblock->fs_fsmnt); 344 if (hotroot()) 345 pwarn("** Root file system\n"); 346 pwarn("** Phase 1 - Check Blocks and Sizes\n"); 347 } 348 #ifdef PROGRESS 349 if (preen) 350 progress_setrange(0, progress_limits[1]); 351 #endif /* PROGRESS */ 352 pass1(); 353 354 /* 355 * 1b: locate first references to duplicates, if any 356 */ 357 if (duplist) { 358 if (preen) 359 pfatal("INTERNAL ERROR: dups with -p\n"); 360 if (usedsoftdep) 361 pfatal("INTERNAL ERROR: dups with softdep\n"); 362 pwarn("** Phase 1b - Rescan For More DUPS\n"); 363 pass1b(); 364 } 365 366 /* 367 * 2: traverse directories from root to mark all connected directories 368 */ 369 if (preen == 0) 370 pwarn("** Phase 2 - Check Pathnames\n"); 371 #ifdef PROGRESS 372 if (preen) 373 progress_sethighlim(progress_limits[2]); 374 #endif /* PROGRESS */ 375 pass2(); 376 377 /* 378 * 3: scan inodes looking for disconnected directories 379 */ 380 if (preen == 0) 381 pwarn("** Phase 3 - Check Connectivity\n"); 382 #ifdef PROGRESS 383 if (preen) 384 progress_sethighlim(progress_limits[3]); 385 #endif /* PROGRESS */ 386 pass3(); 387 388 /* 389 * 4: scan inodes looking for disconnected files; check reference counts 390 */ 391 if (preen == 0) 392 pwarn("** Phase 4 - Check Reference Counts\n"); 393 #ifdef PROGRESS 394 if (preen) 395 progress_sethighlim(progress_limits[4]); 396 #endif /* PROGRESS */ 397 pass4(); 398 399 /* 400 * 5: check and repair resource counts in cylinder groups 401 */ 402 if (preen == 0) 403 pwarn("** Phase 5 - Check Cyl groups\n"); 404 #ifdef PROGRESS 405 if (preen) 406 progress_sethighlim(progress_limits[5]); 407 #endif /* PROGRESS */ 408 pass5(); 409 if (uquot_user_hash != NULL) { 410 if (preen == 0) 411 pwarn("** Phase 6 - Check Quotas\n"); 412 pass6(); 413 } 414 415 /* 416 * print out summary statistics 417 */ 418 n_ffree = sblock->fs_cstotal.cs_nffree; 419 n_bfree = sblock->fs_cstotal.cs_nbfree; 420 pwarn("%llu files, %lld used, %lld free ", 421 (unsigned long long)n_files, (long long)n_blks, 422 (long long)(n_ffree + sblock->fs_frag * n_bfree)); 423 printf("(%lld frags, %lld blocks, %lld.%lld%% fragmentation)\n", 424 (long long)n_ffree, (long long)n_bfree, 425 (long long)(n_ffree * 100 / (daddr_t)sblock->fs_dsize), 426 (long long)(((n_ffree * 1000 + (daddr_t)sblock->fs_dsize / 2) 427 / (daddr_t)sblock->fs_dsize) % 10)); 428 if (debug && 429 (n_files -= maxino - UFS_ROOTINO - sblock->fs_cstotal.cs_nifree)) 430 printf("%llu files missing\n", (unsigned long long)n_files); 431 if (debug) { 432 n_blks += sblock->fs_ncg * 433 (cgdmin(sblock, 0) - cgsblock(sblock, 0)); 434 n_blks += cgsblock(sblock, 0) - cgbase(sblock, 0); 435 n_blks += howmany(sblock->fs_cssize, sblock->fs_fsize); 436 if (n_blks -= maxfsblock - (n_ffree + sblock->fs_frag * n_bfree)) 437 printf("%lld blocks missing\n", (long long)n_blks); 438 if (duplist != NULL) { 439 printf("The following duplicate blocks remain:"); 440 for (dp = duplist; dp; dp = dp->next) 441 printf(" %lld,", (long long)dp->dup); 442 printf("\n"); 443 } 444 if (zlnhead != NULL) { 445 printf("The following zero link count inodes remain:"); 446 for (zlnp = zlnhead; zlnp; zlnp = zlnp->next) 447 printf(" %llu,", 448 (unsigned long long)zlnp->zlncnt); 449 printf("\n"); 450 } 451 } 452 zlnhead = (struct zlncnt *)0; 453 duplist = (struct dups *)0; 454 muldup = (struct dups *)0; 455 inocleanup(); 456 if (fsmodified) { 457 sblock->fs_time = time(NULL); 458 sbdirty(); 459 } 460 if (rerun) 461 markclean = 0; 462 #if LITE2BORKEN 463 if (!hotroot()) { 464 ckfini(1); 465 } else { 466 struct statvfs stfs_buf; 467 /* 468 * Check to see if root is mounted read-write. 469 */ 470 if (statvfs("/", &stfs_buf) == 0) 471 flags = stfs_buf.f_flag; 472 else 473 flags = 0; 474 if (markclean) 475 markclean = flags & MNT_RDONLY; 476 ckfini(1); 477 } 478 #else 479 ckfini(1); 480 #endif 481 for (cylno = 0; cylno < sblock->fs_ncg; cylno++) 482 if (inostathead[cylno].il_stat != NULL) 483 free(inostathead[cylno].il_stat); 484 free(inostathead); 485 inostathead = NULL; 486 487 if (!resolved || rerun) { 488 pwarn("\n***** UNRESOLVED INCONSISTENCIES REMAIN *****\n"); 489 returntosingle = 1; 490 } 491 if (!fsmodified) 492 return FSCK_EXIT_OK; 493 if (!preen) 494 pwarn("\n***** FILE SYSTEM WAS MODIFIED *****\n"); 495 if (rerun) 496 pwarn("\n***** PLEASE RERUN FSCK *****\n"); 497 if (hotroot()) { 498 struct statvfs stfs_buf; 499 /* 500 * We modified the root. Do a mount update on 501 * it, unless it is read-write, so we can continue. 502 */ 503 if (statvfs("/", &stfs_buf) == 0) { 504 long flags = stfs_buf.f_flag; 505 struct ufs_args args; 506 507 if (flags & MNT_RDONLY) { 508 args.fspec = 0; 509 flags |= MNT_UPDATE | MNT_RELOAD; 510 if (mount(MOUNT_FFS, "/", flags, 511 &args, sizeof args) == 0) 512 return FSCK_EXIT_OK; 513 } 514 } 515 if (!preen) 516 pwarn("\n***** REBOOT NOW *****\n"); 517 sync(); 518 return FSCK_EXIT_ROOT_CHANGED; 519 } 520 return FSCK_EXIT_OK; 521 } 522 523 static void 524 usage(void) 525 { 526 527 (void) fprintf(stderr, 528 "usage: %s [-" 529 #ifndef NO_APPLE_UFS 530 "a" 531 #endif 532 "dFfPpqUX] " 533 #ifndef NO_FFS_EI 534 "[-B byteorder] " 535 #endif 536 "[-b block] [-c level] [-m mode]\n" 537 "\t[-x snap-backup] [-y | -n] filesystem ...\n", 538 getprogname()); 539 exit(FSCK_EXIT_USAGE); 540 } 541
Indexes created Mon Oct 27 08:10:08 GMT 2025