main.c revision 1.70
1 /* $NetBSD: main.c,v 1.70 2008/08/30 14:07:32 dogcow 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 1.70 2008/08/30 14:07:32 dogcow 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 int returntosingle = 0; 75 76 static int argtoi(int, const char *, const char *, int); 77 static int checkfilesys(const char *, const char *, int); 78 static void usage(void); 79 static char *get_snap_device(char *); 80 81 int 82 main(int argc, char *argv[]) 83 { 84 struct rlimit r; 85 int ch; 86 int ret = FSCK_EXIT_OK; 87 char *snap_backup = NULL; 88 int snap_internal = 0; 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 endian = 0; 99 isappleufs = 0; 100 while ((ch = getopt(argc, argv, "aB:b:c:dFfm:npPqyx:X")) != -1) { 101 switch (ch) { 102 case 'a': 103 isappleufs = 1; 104 break; 105 106 case 'B': 107 if (strcmp(optarg, "be") == 0) 108 endian = BIG_ENDIAN; 109 else if (strcmp(optarg, "le") == 0) 110 endian = LITTLE_ENDIAN; 111 else usage(); 112 break; 113 114 case 'b': 115 skipclean = 0; 116 bflag = argtoi('b', "number", optarg, 10); 117 printf("Alternate super block location: %d\n", bflag); 118 break; 119 120 case 'c': 121 skipclean = 0; 122 cvtlevel = argtoi('c', "conversion level", optarg, 10); 123 if (cvtlevel > 4) { 124 cvtlevel = 4; 125 warnx("Using maximum conversion level of %d\n", 126 cvtlevel); 127 } 128 break; 129 130 case 'd': 131 debug++; 132 break; 133 134 case 'F': 135 forceimage = 1; 136 break; 137 138 case 'f': 139 skipclean = 0; 140 break; 141 142 case 'm': 143 lfmode = argtoi('m', "mode", optarg, 8); 144 if (lfmode &~ 07777) 145 errx(FSCK_EXIT_USAGE, "bad mode to -m: %o", 146 lfmode); 147 printf("** lost+found creation mode %o\n", lfmode); 148 break; 149 150 case 'n': 151 nflag++; 152 yflag = 0; 153 break; 154 155 case 'p': 156 preen++; 157 break; 158 159 case 'P': 160 progress = 1; 161 break; 162 163 case 'q': 164 quiet++; 165 break; 166 167 case 'y': 168 yflag++; 169 nflag = 0; 170 break; 171 case 'x': 172 snap_backup = optarg; 173 break; 174 case 'X': 175 snap_internal = 1; 176 break; 177 178 default: 179 usage(); 180 } 181 } 182 183 if (snap_backup || snap_internal) { 184 if (!nflag || yflag) { 185 warnx("Cannot use -x or -X without -n\n"); 186 snap_backup = NULL; 187 snap_internal = 0; 188 } 189 } 190 191 192 argc -= optind; 193 argv += optind; 194 195 if (!argc) 196 usage(); 197 198 if (debug) 199 progress = 0; 200 201 if (signal(SIGINT, SIG_IGN) != SIG_IGN) 202 (void)signal(SIGINT, catch); 203 if (preen) 204 (void)signal(SIGQUIT, catchquit); 205 #ifdef PROGRESS 206 if (progress) { 207 progress_ttywidth(0); 208 (void)signal(SIGWINCH, progress_ttywidth); 209 } 210 #endif /* ! PROGRESS */ 211 signal(SIGINFO, infohandler); 212 213 while (argc-- > 0) { 214 int nret; 215 char *path = strdup(blockcheck(*argv)); 216 217 if (path == NULL) 218 pfatal("Can't check %s\n", *argv); 219 220 if (snap_backup || snap_internal) { 221 char *mpt; 222 char *snap_dev; 223 int snapfd; 224 225 mpt = get_snap_device(*argv); 226 if (mpt == NULL) 227 goto next; 228 snapfd = snap_open(mpt, snap_backup, NULL, &snap_dev); 229 if (snapfd < 0) { 230 warn("can't take snapshot of %s", mpt); 231 free(mpt); 232 goto next; 233 } 234 nret = checkfilesys(blockcheck(snap_dev), path, 0); 235 if (ret < nret) 236 ret = nret; 237 free(mpt); 238 close(snapfd); 239 } else { 240 nret = checkfilesys(path, path, 0); 241 if (ret < nret) 242 ret = nret; 243 } 244 next: 245 free(path); 246 argv++; 247 } 248 249 return returntosingle ? FSCK_EXIT_UNRESOLVED : ret; 250 } 251 252 static int 253 argtoi(int flag, const char *req, const char *str, int base) 254 { 255 char *cp; 256 int ret; 257 258 ret = (int)strtol(str, &cp, base); 259 if (cp == str || *cp) 260 errx(FSCK_EXIT_USAGE, "-%c flag requires a %s", 261 flag, req); 262 return (ret); 263 } 264 265 /* 266 * Check the specified filesystem. 267 */ 268 /* ARGSUSED */ 269 static int 270 checkfilesys(const char *filesys, const char *origfs, int child) 271 { 272 daddr_t n_ffree, n_bfree; 273 struct dups *dp; 274 struct zlncnt *zlnp; 275 int cylno; 276 #ifdef LITE2BORKEN 277 int flags; 278 #endif 279 #ifdef PROGRESS 280 /* 281 * In prune mode, how far does the progress bar travel during 282 * each pass? (In non-prune mode, each pass has a separate 283 * progress bar that travels from 0 to 100%.) 284 * 285 * The numbers below are percentages, intended to correspond 286 * roughly to the cumulative time up to the end of each pass. 287 * They don't have to be accurate. In reality, on a large 288 * file system, Pass 1 and Pass 2 together are likely to use 289 * significantly more than the 95% reflected below, so users 290 * will get a pleasant surprise when the last 5% of the progress 291 * bar runs more quickly than they had expected. 292 */ 293 static int progress_limits[] = {0, 20, 95, 96, 97, 100}; 294 #endif /* PROGRESS */ 295 296 if (preen && child) 297 (void)signal(SIGQUIT, voidquit); 298 setcdevname(filesys, preen); 299 if (debug && preen) 300 pwarn("starting\n"); 301 switch (setup(filesys, origfs)) { 302 case 0: 303 if (preen) 304 pfatal("CAN'T CHECK FILE SYSTEM."); 305 /* fall through */ 306 case -1: 307 return FSCK_EXIT_OK; 308 } 309 /* 310 * Cleared if any questions answered no. Used to decide if 311 * the superblock should be marked clean. 312 */ 313 resolved = 1; 314 315 #ifdef PROGRESS 316 progress_switch(progress); 317 progress_init(); 318 #endif /* PROGRESS */ 319 320 /* 321 * 1: scan inodes tallying blocks used 322 */ 323 if (preen == 0) { 324 pwarn("** Last Mounted on %s\n", sblock->fs_fsmnt); 325 if (hotroot()) 326 pwarn("** Root file system\n"); 327 pwarn("** Phase 1 - Check Blocks and Sizes\n"); 328 } 329 #ifdef PROGRESS 330 if (preen) 331 progress_setrange(0, progress_limits[1]); 332 #endif /* PROGRESS */ 333 pass1(); 334 335 /* 336 * 1b: locate first references to duplicates, if any 337 */ 338 if (duplist) { 339 if (preen) 340 pfatal("INTERNAL ERROR: dups with -p\n"); 341 if (usedsoftdep) 342 pfatal("INTERNAL ERROR: dups with softdep\n"); 343 pwarn("** Phase 1b - Rescan For More DUPS\n"); 344 pass1b(); 345 } 346 347 /* 348 * 2: traverse directories from root to mark all connected directories 349 */ 350 if (preen == 0) 351 pwarn("** Phase 2 - Check Pathnames\n"); 352 #ifdef PROGRESS 353 if (preen) 354 progress_sethighlim(progress_limits[2]); 355 #endif /* PROGRESS */ 356 pass2(); 357 358 /* 359 * 3: scan inodes looking for disconnected directories 360 */ 361 if (preen == 0) 362 pwarn("** Phase 3 - Check Connectivity\n"); 363 #ifdef PROGRESS 364 if (preen) 365 progress_sethighlim(progress_limits[3]); 366 #endif /* PROGRESS */ 367 pass3(); 368 369 /* 370 * 4: scan inodes looking for disconnected files; check reference counts 371 */ 372 if (preen == 0) 373 pwarn("** Phase 4 - Check Reference Counts\n"); 374 #ifdef PROGRESS 375 if (preen) 376 progress_sethighlim(progress_limits[4]); 377 #endif /* PROGRESS */ 378 pass4(); 379 380 /* 381 * 5: check and repair resource counts in cylinder groups 382 */ 383 if (preen == 0) 384 pwarn("** Phase 5 - Check Cyl groups\n"); 385 #ifdef PROGRESS 386 if (preen) 387 progress_sethighlim(progress_limits[5]); 388 #endif /* PROGRESS */ 389 pass5(); 390 391 /* 392 * print out summary statistics 393 */ 394 n_ffree = sblock->fs_cstotal.cs_nffree; 395 n_bfree = sblock->fs_cstotal.cs_nbfree; 396 pwarn("%llu files, %lld used, %lld free ", 397 (unsigned long long)n_files, (long long)n_blks, 398 (long long)(n_ffree + sblock->fs_frag * n_bfree)); 399 printf("(%lld frags, %lld blocks, %lld.%lld%% fragmentation)\n", 400 (long long)n_ffree, (long long)n_bfree, 401 (long long)(n_ffree * 100 / (daddr_t)sblock->fs_dsize), 402 (long long)(((n_ffree * 1000 + (daddr_t)sblock->fs_dsize / 2) 403 / (daddr_t)sblock->fs_dsize) % 10)); 404 if (debug && 405 (n_files -= maxino - ROOTINO - sblock->fs_cstotal.cs_nifree)) 406 printf("%llu files missing\n", (unsigned long long)n_files); 407 if (debug) { 408 n_blks += sblock->fs_ncg * 409 (cgdmin(sblock, 0) - cgsblock(sblock, 0)); 410 n_blks += cgsblock(sblock, 0) - cgbase(sblock, 0); 411 n_blks += howmany(sblock->fs_cssize, sblock->fs_fsize); 412 if (n_blks -= maxfsblock - (n_ffree + sblock->fs_frag * n_bfree)) 413 printf("%lld blocks missing\n", (long long)n_blks); 414 if (duplist != NULL) { 415 printf("The following duplicate blocks remain:"); 416 for (dp = duplist; dp; dp = dp->next) 417 printf(" %lld,", (long long)dp->dup); 418 printf("\n"); 419 } 420 if (zlnhead != NULL) { 421 printf("The following zero link count inodes remain:"); 422 for (zlnp = zlnhead; zlnp; zlnp = zlnp->next) 423 printf(" %llu,", 424 (unsigned long long)zlnp->zlncnt); 425 printf("\n"); 426 } 427 } 428 zlnhead = (struct zlncnt *)0; 429 duplist = (struct dups *)0; 430 muldup = (struct dups *)0; 431 inocleanup(); 432 if (fsmodified) { 433 sblock->fs_time = time(NULL); 434 sbdirty(); 435 } 436 if (rerun) 437 markclean = 0; 438 #if LITE2BORKEN 439 if (!hotroot()) { 440 ckfini(); 441 } else { 442 struct statvfs stfs_buf; 443 /* 444 * Check to see if root is mounted read-write. 445 */ 446 if (statvfs("/", &stfs_buf) == 0) 447 flags = stfs_buf.f_flag; 448 else 449 flags = 0; 450 if (markclean) 451 markclean = flags & MNT_RDONLY; 452 ckfini(); 453 } 454 #else 455 ckfini(); 456 #endif 457 for (cylno = 0; cylno < sblock->fs_ncg; cylno++) 458 if (inostathead[cylno].il_stat != NULL) 459 free(inostathead[cylno].il_stat); 460 free(inostathead); 461 inostathead = NULL; 462 463 if (!resolved || rerun) { 464 pwarn("\n***** UNRESOLVED INCONSISTENCIES REMAIN *****\n"); 465 returntosingle = 1; 466 } 467 if (!fsmodified) 468 return FSCK_EXIT_OK; 469 if (!preen) 470 pwarn("\n***** FILE SYSTEM WAS MODIFIED *****\n"); 471 if (rerun) 472 pwarn("\n***** PLEASE RERUN FSCK *****\n"); 473 if (hotroot()) { 474 struct statvfs stfs_buf; 475 /* 476 * We modified the root. Do a mount update on 477 * it, unless it is read-write, so we can continue. 478 */ 479 if (statvfs("/", &stfs_buf) == 0) { 480 long flags = stfs_buf.f_flag; 481 struct ufs_args args; 482 483 if (flags & MNT_RDONLY) { 484 args.fspec = 0; 485 flags |= MNT_UPDATE | MNT_RELOAD; 486 if (mount(MOUNT_FFS, "/", flags, 487 &args, sizeof args) == 0) 488 return FSCK_EXIT_OK; 489 } 490 } 491 if (!preen) 492 pwarn("\n***** REBOOT NOW *****\n"); 493 sync(); 494 return FSCK_EXIT_ROOT_CHANGED; 495 } 496 return FSCK_EXIT_OK; 497 } 498 499 static void 500 usage(void) 501 { 502 503 (void) fprintf(stderr, 504 "usage: %s [-adFfnPpqyX] [-B be|le] [-b block] [-c level] [-m mode]" 505 " [-x snap-backup] filesystem ...\n", 506 getprogname()); 507 exit(FSCK_EXIT_USAGE); 508 } 509 510 static 511 char *get_snap_device(char *file) 512 { 513 char *mountpoint = NULL; 514 struct statvfs *mntbuf, *fs, fsbuf; 515 struct stat sb; 516 517 /* find the mount point */ 518 if (lstat(file, &sb) == -1) { 519 warn("can't stat %s", file); 520 return NULL; 521 } 522 if (S_ISCHR(sb.st_mode) || S_ISBLK(sb.st_mode)) { 523 int mntbufc, i; 524 if ((mntbufc = getmntinfo(&mntbuf, MNT_NOWAIT)) == 0) 525 pfatal("can't get mount list: %s\n", strerror(errno)); 526 for (fs = mntbuf, i = 0; 527 i < mntbufc; i++, fs++) { 528 if (strcmp(fs->f_fstypename, "ufs") != 0 && 529 strcmp(fs->f_fstypename, "ffs") != 0) 530 continue; 531 if (fs->f_flag & ST_RDONLY) { 532 warnx("Cannot use -x or -X " 533 "on read-only filesystem"); 534 free(mntbuf); 535 return NULL; 536 } 537 if (strcmp(fs->f_mntfromname, unrawname(file)) == 0) { 538 mountpoint = strdup(fs->f_mntonname); 539 free(mntbuf); 540 return mountpoint; 541 } 542 } 543 warnx("Cannot use -x or -X on unmounted device"); 544 free(mntbuf); 545 return NULL; 546 } 547 if (S_ISDIR(sb.st_mode)) { 548 if (statvfs(file, &fsbuf) == -1) 549 pfatal("can't statvfs %s: %s\n", file, strerror(errno)); 550 if (strcmp(fsbuf.f_mntonname, file)) 551 pfatal("%s is not a mount point\n", file); 552 if (fsbuf.f_flag & ST_RDONLY) { 553 warnx("Cannot use -x or -X " 554 "on read-only filesystem"); 555 return NULL; 556 } 557 mountpoint = strdup(file); 558 return mountpoint; 559 } 560 pfatal("%s is not a mount point\n", file); 561 return NULL; 562 } 563
Indexes created Tue Sep 30 20:09:53 GMT 2025