main.c revision 1.83.4.1
1 /* $NetBSD: main.c,v 1.83.4.1 2017/04/21 16:53:13 bouyer 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 1.83.4.1 2017/04/21 16:53:13 bouyer 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 volatile sig_atomic_t returntosingle = 0; 75 76 static int argtoi(int, const char *, const char *, int); 77 static int checkfilesys(const char *, const char *, int); 78 __dead static void usage(void); 79 80 int 81 main(int argc, char *argv[]) 82 { 83 struct rlimit r; 84 int ch; 85 int ret = FSCK_EXIT_OK; 86 char *snap_backup = NULL; 87 int snap_internal = 0; 88 89 ckfinish = ckfini; 90 91 if (getrlimit(RLIMIT_DATA, &r) == 0) { 92 r.rlim_cur = r.rlim_max; 93 (void) setrlimit(RLIMIT_DATA, &r); 94 } 95 sync(); 96 skipclean = 1; 97 markclean = 1; 98 forceimage = 0; 99 #ifndef NO_FFS_EI 100 endian = 0; 101 #endif 102 #ifndef NO_APPLE_UFS 103 isappleufs = 0; 104 #endif 105 while ((ch = getopt(argc, argv, "aB:b:c:dFfm:npPqUyx:X")) != -1) { 106 switch (ch) { 107 #ifndef NO_APPLE_UFS 108 case 'a': 109 isappleufs = 1; 110 break; 111 #endif 112 113 #ifndef NO_FFS_EI 114 case 'B': 115 if (strcmp(optarg, "be") == 0) 116 endian = BIG_ENDIAN; 117 else if (strcmp(optarg, "le") == 0) 118 endian = LITTLE_ENDIAN; 119 else 120 usage(); 121 break; 122 #endif 123 124 case 'b': 125 skipclean = 0; 126 bflag = argtoi('b', "number", optarg, 10); 127 printf("Alternate super block location: %d\n", bflag); 128 break; 129 130 case 'c': 131 skipclean = 0; 132 cvtlevel = argtoi('c', "conversion level", optarg, 10); 133 if (cvtlevel > 4) { 134 cvtlevel = 4; 135 warnx("Using maximum conversion level of %d", 136 cvtlevel); 137 } 138 break; 139 140 case 'd': 141 debug++; 142 break; 143 144 case 'F': 145 forceimage = 1; 146 break; 147 148 case 'f': 149 skipclean = 0; 150 break; 151 152 case 'm': 153 lfmode = argtoi('m', "mode", optarg, 8); 154 if (lfmode &~ 07777) 155 errx(FSCK_EXIT_USAGE, "bad mode to -m: %o", 156 lfmode); 157 printf("** lost+found creation mode %o\n", lfmode); 158 break; 159 160 case 'n': 161 nflag++; 162 yflag = 0; 163 break; 164 165 case 'p': 166 preen++; 167 break; 168 169 case 'P': 170 progress = 1; 171 break; 172 173 case 'q': 174 quiet++; 175 break; 176 #ifndef SMALL 177 case 'U': 178 Uflag++; 179 break; 180 #endif 181 182 case 'y': 183 yflag++; 184 nflag = 0; 185 break; 186 case 'x': 187 snap_backup = optarg; 188 break; 189 case 'X': 190 snap_internal = 1; 191 break; 192 193 default: 194 usage(); 195 } 196 } 197 198 if (snap_backup || snap_internal) { 199 if (!nflag || yflag) { 200 warnx("Cannot use -x or -X without -n"); 201 snap_backup = NULL; 202 snap_internal = 0; 203 } 204 } 205 206 207 argc -= optind; 208 argv += optind; 209 210 if (!argc) 211 usage(); 212 213 if (debug) 214 progress = 0; 215 216 if (signal(SIGINT, SIG_IGN) != SIG_IGN) 217 (void)signal(SIGINT, catch); 218 if (preen) 219 (void)signal(SIGQUIT, catchquit); 220 #ifdef PROGRESS 221 if (progress) { 222 progress_ttywidth(0); 223 (void)signal(SIGWINCH, progress_ttywidth); 224 } 225 #endif /* ! PROGRESS */ 226 signal(SIGINFO, infohandler); 227 228 while (argc-- > 0) { 229 int nret; 230 char *path; 231 232 if (!forceimage) 233 path = strdup(blockcheck(*argv)); 234 else 235 path = strdup(*argv); 236 237 if (path == NULL) 238 pfatal("Can't check %s\n", *argv); 239 240 if (snap_backup || snap_internal) { 241 char *snap_dev; 242 int snapfd; 243 244 snapfd = snap_open(*argv, snap_backup, NULL, &snap_dev); 245 if (snapfd < 0) { 246 warn("can't take snapshot of %s", *argv); 247 goto next; 248 } 249 nret = checkfilesys(blockcheck(snap_dev), path, 0); 250 if (ret < nret) 251 ret = nret; 252 close(snapfd); 253 } else { 254 nret = checkfilesys(path, path, 0); 255 if (ret < nret) 256 ret = nret; 257 } 258 next: 259 free(path); 260 argv++; 261 } 262 263 return returntosingle ? FSCK_EXIT_UNRESOLVED : ret; 264 } 265 266 static int 267 argtoi(int flag, const char *req, const char *str, int base) 268 { 269 char *cp; 270 int ret; 271 272 ret = (int)strtol(str, &cp, base); 273 if (cp == str || *cp) 274 errx(FSCK_EXIT_USAGE, "-%c flag requires a %s", 275 flag, req); 276 return (ret); 277 } 278 279 /* 280 * Check the specified filesystem. 281 */ 282 /* ARGSUSED */ 283 static int 284 checkfilesys(const char *filesys, const char *origfs, int child) 285 { 286 daddr_t n_ffree, n_bfree; 287 struct dups *dp; 288 struct zlncnt *zlnp; 289 int cylno; 290 #ifdef LITE2BORKEN 291 int flags; 292 #endif 293 #ifdef PROGRESS 294 /* 295 * In prune mode, how far does the progress bar travel during 296 * each pass? (In non-prune mode, each pass has a separate 297 * progress bar that travels from 0 to 100%.) 298 * 299 * The numbers below are percentages, intended to correspond 300 * roughly to the cumulative time up to the end of each pass. 301 * They don't have to be accurate. In reality, on a large 302 * file system, Pass 1 and Pass 2 together are likely to use 303 * significantly more than the 95% reflected below, so users 304 * will get a pleasant surprise when the last 5% of the progress 305 * bar runs more quickly than they had expected. 306 */ 307 static int progress_limits[] = {0, 20, 95, 96, 97, 100}; 308 #endif /* PROGRESS */ 309 310 if (preen && child) 311 (void)signal(SIGQUIT, voidquit); 312 setcdevname(filesys, preen); 313 if (debug && preen) 314 pwarn("starting\n"); 315 switch (setup(filesys, origfs)) { 316 case 0: 317 if (preen) 318 pfatal("CAN'T CHECK FILE SYSTEM."); 319 /* fall through */ 320 case -1: 321 return FSCK_EXIT_OK; 322 } 323 /* 324 * Cleared if any questions answered no. Used to decide if 325 * the superblock should be marked clean. 326 */ 327 resolved = 1; 328 329 #ifdef PROGRESS 330 progress_switch(progress); 331 progress_init(); 332 #endif /* PROGRESS */ 333 334 /* 335 * 1: scan inodes tallying blocks used 336 */ 337 if (preen == 0) { 338 pwarn("** Last Mounted on %s\n", sblock->fs_fsmnt); 339 if (hotroot()) 340 pwarn("** Root file system\n"); 341 pwarn("** Phase 1 - Check Blocks and Sizes\n"); 342 } 343 #ifdef PROGRESS 344 if (preen) 345 progress_setrange(0, progress_limits[1]); 346 #endif /* PROGRESS */ 347 pass1(); 348 349 /* 350 * 1b: locate first references to duplicates, if any 351 */ 352 if (duplist) { 353 if (preen) 354 pfatal("INTERNAL ERROR: dups with -p\n"); 355 if (usedsoftdep) 356 pfatal("INTERNAL ERROR: dups with softdep\n"); 357 pwarn("** Phase 1b - Rescan For More DUPS\n"); 358 pass1b(); 359 } 360 361 /* 362 * 2: traverse directories from root to mark all connected directories 363 */ 364 if (preen == 0) 365 pwarn("** Phase 2 - Check Pathnames\n"); 366 #ifdef PROGRESS 367 if (preen) 368 progress_sethighlim(progress_limits[2]); 369 #endif /* PROGRESS */ 370 pass2(); 371 372 /* 373 * 3: scan inodes looking for disconnected directories 374 */ 375 if (preen == 0) 376 pwarn("** Phase 3 - Check Connectivity\n"); 377 #ifdef PROGRESS 378 if (preen) 379 progress_sethighlim(progress_limits[3]); 380 #endif /* PROGRESS */ 381 pass3(); 382 383 /* 384 * 4: scan inodes looking for disconnected files; check reference counts 385 */ 386 if (preen == 0) 387 pwarn("** Phase 4 - Check Reference Counts\n"); 388 #ifdef PROGRESS 389 if (preen) 390 progress_sethighlim(progress_limits[4]); 391 #endif /* PROGRESS */ 392 pass4(); 393 394 /* 395 * 5: check and repair resource counts in cylinder groups 396 */ 397 if (preen == 0) 398 pwarn("** Phase 5 - Check Cyl groups\n"); 399 #ifdef PROGRESS 400 if (preen) 401 progress_sethighlim(progress_limits[5]); 402 #endif /* PROGRESS */ 403 pass5(); 404 if (uquot_user_hash != NULL) { 405 if (preen == 0) 406 pwarn("** Phase 6 - Check Quotas\n"); 407 pass6(); 408 } 409 410 /* 411 * print out summary statistics 412 */ 413 n_ffree = sblock->fs_cstotal.cs_nffree; 414 n_bfree = sblock->fs_cstotal.cs_nbfree; 415 pwarn("%llu files, %lld used, %lld free ", 416 (unsigned long long)n_files, (long long)n_blks, 417 (long long)(n_ffree + sblock->fs_frag * n_bfree)); 418 printf("(%lld frags, %lld blocks, %lld.%lld%% fragmentation)\n", 419 (long long)n_ffree, (long long)n_bfree, 420 (long long)(n_ffree * 100 / (daddr_t)sblock->fs_dsize), 421 (long long)(((n_ffree * 1000 + (daddr_t)sblock->fs_dsize / 2) 422 / (daddr_t)sblock->fs_dsize) % 10)); 423 if (debug && 424 (n_files -= maxino - UFS_ROOTINO - sblock->fs_cstotal.cs_nifree)) 425 printf("%llu files missing\n", (unsigned long long)n_files); 426 if (debug) { 427 n_blks += sblock->fs_ncg * 428 (cgdmin(sblock, 0) - cgsblock(sblock, 0)); 429 n_blks += cgsblock(sblock, 0) - cgbase(sblock, 0); 430 n_blks += howmany(sblock->fs_cssize, sblock->fs_fsize); 431 if (n_blks -= maxfsblock - (n_ffree + sblock->fs_frag * n_bfree)) 432 printf("%lld blocks missing\n", (long long)n_blks); 433 if (duplist != NULL) { 434 printf("The following duplicate blocks remain:"); 435 for (dp = duplist; dp; dp = dp->next) 436 printf(" %lld,", (long long)dp->dup); 437 printf("\n"); 438 } 439 if (zlnhead != NULL) { 440 printf("The following zero link count inodes remain:"); 441 for (zlnp = zlnhead; zlnp; zlnp = zlnp->next) 442 printf(" %llu,", 443 (unsigned long long)zlnp->zlncnt); 444 printf("\n"); 445 } 446 } 447 zlnhead = (struct zlncnt *)0; 448 duplist = (struct dups *)0; 449 muldup = (struct dups *)0; 450 inocleanup(); 451 if (fsmodified) { 452 sblock->fs_time = time(NULL); 453 sbdirty(); 454 } 455 if (rerun) 456 markclean = 0; 457 #if LITE2BORKEN 458 if (!hotroot()) { 459 ckfini(1); 460 } else { 461 struct statvfs stfs_buf; 462 /* 463 * Check to see if root is mounted read-write. 464 */ 465 if (statvfs("/", &stfs_buf) == 0) 466 flags = stfs_buf.f_flag; 467 else 468 flags = 0; 469 if (markclean) 470 markclean = flags & MNT_RDONLY; 471 ckfini(1); 472 } 473 #else 474 ckfini(1); 475 #endif 476 for (cylno = 0; cylno < sblock->fs_ncg; cylno++) 477 if (inostathead[cylno].il_stat != NULL) 478 free(inostathead[cylno].il_stat); 479 free(inostathead); 480 inostathead = NULL; 481 482 if (!resolved || rerun) { 483 pwarn("\n***** UNRESOLVED INCONSISTENCIES REMAIN *****\n"); 484 returntosingle = 1; 485 } 486 if (!fsmodified) 487 return FSCK_EXIT_OK; 488 if (!preen) 489 pwarn("\n***** FILE SYSTEM WAS MODIFIED *****\n"); 490 if (rerun) 491 pwarn("\n***** PLEASE RERUN FSCK *****\n"); 492 if (hotroot()) { 493 struct statvfs stfs_buf; 494 /* 495 * We modified the root. Do a mount update on 496 * it, unless it is read-write, so we can continue. 497 */ 498 if (statvfs("/", &stfs_buf) == 0) { 499 long flags = stfs_buf.f_flag; 500 struct ufs_args args; 501 502 if (flags & MNT_RDONLY) { 503 args.fspec = 0; 504 flags |= MNT_UPDATE | MNT_RELOAD; 505 if (mount(MOUNT_FFS, "/", flags, 506 &args, sizeof args) == 0) 507 return FSCK_EXIT_OK; 508 } 509 } 510 if (!preen) 511 pwarn("\n***** REBOOT NOW *****\n"); 512 sync(); 513 return FSCK_EXIT_ROOT_CHANGED; 514 } 515 return FSCK_EXIT_OK; 516 } 517 518 static void 519 usage(void) 520 { 521 522 (void) fprintf(stderr, 523 "usage: %s [-" 524 #ifndef NO_APPLE_UFS 525 "a" 526 #endif 527 "dFfPpqUX] " 528 #ifndef NO_FFS_EI 529 "[-B byteorder] " 530 #endif 531 "[-b block] [-c level] [-m mode]\n" 532 "\t[-x snap-backup] [-y | -n] filesystem ...\n", 533 getprogname()); 534 exit(FSCK_EXIT_USAGE); 535 } 536
Indexes created Mon Oct 27 17:09:47 GMT 2025