1 /* $NetBSD: main.c,v 1.81 2013/01/22 09:39:11 dholland 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 1.81 2013/01/22 09:39:11 dholland 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 endian = 0; 100 isappleufs = 0; 101 while ((ch = getopt(argc, argv, "aB:b:c:dFfm:npPqUyx:X")) != -1) { 102 switch (ch) { 103 case 'a': 104 isappleufs = 1; 105 break; 106 107 case 'B': 108 if (strcmp(optarg, "be") == 0) 109 endian = BIG_ENDIAN; 110 else if (strcmp(optarg, "le") == 0) 111 endian = LITTLE_ENDIAN; 112 else usage(); 113 break; 114 115 case 'b': 116 skipclean = 0; 117 bflag = argtoi('b', "number", optarg, 10); 118 printf("Alternate super block location: %d\n", bflag); 119 break; 120 121 case 'c': 122 skipclean = 0; 123 cvtlevel = argtoi('c', "conversion level", optarg, 10); 124 if (cvtlevel > 4) { 125 cvtlevel = 4; 126 warnx("Using maximum conversion level of %d\n", 127 cvtlevel); 128 } 129 break; 130 131 case 'd': 132 debug++; 133 break; 134 135 case 'F': 136 forceimage = 1; 137 break; 138 139 case 'f': 140 skipclean = 0; 141 break; 142 143 case 'm': 144 lfmode = argtoi('m', "mode", optarg, 8); 145 if (lfmode &~ 07777) 146 errx(FSCK_EXIT_USAGE, "bad mode to -m: %o", 147 lfmode); 148 printf("** lost+found creation mode %o\n", lfmode); 149 break; 150 151 case 'n': 152 nflag++; 153 yflag = 0; 154 break; 155 156 case 'p': 157 preen++; 158 break; 159 160 case 'P': 161 progress = 1; 162 break; 163 164 case 'q': 165 quiet++; 166 break; 167 #ifndef SMALL 168 case 'U': 169 Uflag++; 170 break; 171 #endif 172 173 case 'y': 174 yflag++; 175 nflag = 0; 176 break; 177 case 'x': 178 snap_backup = optarg; 179 break; 180 case 'X': 181 snap_internal = 1; 182 break; 183 184 default: 185 usage(); 186 } 187 } 188 189 if (snap_backup || snap_internal) { 190 if (!nflag || yflag) { 191 warnx("Cannot use -x or -X without -n\n"); 192 snap_backup = NULL; 193 snap_internal = 0; 194 } 195 } 196 197 198 argc -= optind; 199 argv += optind; 200 201 if (!argc) 202 usage(); 203 204 if (debug) 205 progress = 0; 206 207 if (signal(SIGINT, SIG_IGN) != SIG_IGN) 208 (void)signal(SIGINT, catch); 209 if (preen) 210 (void)signal(SIGQUIT, catchquit); 211 #ifdef PROGRESS 212 if (progress) { 213 progress_ttywidth(0); 214 (void)signal(SIGWINCH, progress_ttywidth); 215 } 216 #endif /* ! PROGRESS */ 217 signal(SIGINFO, infohandler); 218 219 while (argc-- > 0) { 220 int nret; 221 char *path; 222 223 if (!forceimage) 224 path = strdup(blockcheck(*argv)); 225 else 226 path = strdup(*argv); 227 228 if (path == NULL) 229 pfatal("Can't check %s\n", *argv); 230 231 if (snap_backup || snap_internal) { 232 char *snap_dev; 233 int snapfd; 234 235 snapfd = snap_open(*argv, snap_backup, NULL, &snap_dev); 236 if (snapfd < 0) { 237 warn("can't take snapshot of %s", *argv); 238 goto next; 239 } 240 nret = checkfilesys(blockcheck(snap_dev), path, 0); 241 if (ret < nret) 242 ret = nret; 243 close(snapfd); 244 } else { 245 nret = checkfilesys(path, path, 0); 246 if (ret < nret) 247 ret = nret; 248 } 249 next: 250 free(path); 251 argv++; 252 } 253 254 return returntosingle ? FSCK_EXIT_UNRESOLVED : ret; 255 } 256 257 static int 258 argtoi(int flag, const char *req, const char *str, int base) 259 { 260 char *cp; 261 int ret; 262 263 ret = (int)strtol(str, &cp, base); 264 if (cp == str || *cp) 265 errx(FSCK_EXIT_USAGE, "-%c flag requires a %s", 266 flag, req); 267 return (ret); 268 } 269 270 /* 271 * Check the specified filesystem. 272 */ 273 /* ARGSUSED */ 274 static int 275 checkfilesys(const char *filesys, const char *origfs, int child) 276 { 277 daddr_t n_ffree, n_bfree; 278 struct dups *dp; 279 struct zlncnt *zlnp; 280 int cylno; 281 #ifdef LITE2BORKEN 282 int flags; 283 #endif 284 #ifdef PROGRESS 285 /* 286 * In prune mode, how far does the progress bar travel during 287 * each pass? (In non-prune mode, each pass has a separate 288 * progress bar that travels from 0 to 100%.) 289 * 290 * The numbers below are percentages, intended to correspond 291 * roughly to the cumulative time up to the end of each pass. 292 * They don't have to be accurate. In reality, on a large 293 * file system, Pass 1 and Pass 2 together are likely to use 294 * significantly more than the 95% reflected below, so users 295 * will get a pleasant surprise when the last 5% of the progress 296 * bar runs more quickly than they had expected. 297 */ 298 static int progress_limits[] = {0, 20, 95, 96, 97, 100}; 299 #endif /* PROGRESS */ 300 301 if (preen && child) 302 (void)signal(SIGQUIT, voidquit); 303 setcdevname(filesys, preen); 304 if (debug && preen) 305 pwarn("starting\n"); 306 switch (setup(filesys, origfs)) { 307 case 0: 308 if (preen) 309 pfatal("CAN'T CHECK FILE SYSTEM."); 310 /* fall through */ 311 case -1: 312 return FSCK_EXIT_OK; 313 } 314 /* 315 * Cleared if any questions answered no. Used to decide if 316 * the superblock should be marked clean. 317 */ 318 resolved = 1; 319 320 #ifdef PROGRESS 321 progress_switch(progress); 322 progress_init(); 323 #endif /* PROGRESS */ 324 325 /* 326 * 1: scan inodes tallying blocks used 327 */ 328 if (preen == 0) { 329 pwarn("** Last Mounted on %s\n", sblock->fs_fsmnt); 330 if (hotroot()) 331 pwarn("** Root file system\n"); 332 pwarn("** Phase 1 - Check Blocks and Sizes\n"); 333 } 334 #ifdef PROGRESS 335 if (preen) 336 progress_setrange(0, progress_limits[1]); 337 #endif /* PROGRESS */ 338 pass1(); 339 340 /* 341 * 1b: locate first references to duplicates, if any 342 */ 343 if (duplist) { 344 if (preen) 345 pfatal("INTERNAL ERROR: dups with -p\n"); 346 if (usedsoftdep) 347 pfatal("INTERNAL ERROR: dups with softdep\n"); 348 pwarn("** Phase 1b - Rescan For More DUPS\n"); 349 pass1b(); 350 } 351 352 /* 353 * 2: traverse directories from root to mark all connected directories 354 */ 355 if (preen == 0) 356 pwarn("** Phase 2 - Check Pathnames\n"); 357 #ifdef PROGRESS 358 if (preen) 359 progress_sethighlim(progress_limits[2]); 360 #endif /* PROGRESS */ 361 pass2(); 362 363 /* 364 * 3: scan inodes looking for disconnected directories 365 */ 366 if (preen == 0) 367 pwarn("** Phase 3 - Check Connectivity\n"); 368 #ifdef PROGRESS 369 if (preen) 370 progress_sethighlim(progress_limits[3]); 371 #endif /* PROGRESS */ 372 pass3(); 373 374 /* 375 * 4: scan inodes looking for disconnected files; check reference counts 376 */ 377 if (preen == 0) 378 pwarn("** Phase 4 - Check Reference Counts\n"); 379 #ifdef PROGRESS 380 if (preen) 381 progress_sethighlim(progress_limits[4]); 382 #endif /* PROGRESS */ 383 pass4(); 384 385 /* 386 * 5: check and repair resource counts in cylinder groups 387 */ 388 if (preen == 0) 389 pwarn("** Phase 5 - Check Cyl groups\n"); 390 #ifdef PROGRESS 391 if (preen) 392 progress_sethighlim(progress_limits[5]); 393 #endif /* PROGRESS */ 394 pass5(); 395 if (uquot_user_hash != NULL) { 396 if (preen == 0) 397 pwarn("** Phase 6 - Check Quotas\n"); 398 pass6(); 399 } 400 401 /* 402 * print out summary statistics 403 */ 404 n_ffree = sblock->fs_cstotal.cs_nffree; 405 n_bfree = sblock->fs_cstotal.cs_nbfree; 406 pwarn("%llu files, %lld used, %lld free ", 407 (unsigned long long)n_files, (long long)n_blks, 408 (long long)(n_ffree + sblock->fs_frag * n_bfree)); 409 printf("(%lld frags, %lld blocks, %lld.%lld%% fragmentation)\n", 410 (long long)n_ffree, (long long)n_bfree, 411 (long long)(n_ffree * 100 / (daddr_t)sblock->fs_dsize), 412 (long long)(((n_ffree * 1000 + (daddr_t)sblock->fs_dsize / 2) 413 / (daddr_t)sblock->fs_dsize) % 10)); 414 if (debug && 415 (n_files -= maxino - UFS_ROOTINO - sblock->fs_cstotal.cs_nifree)) 416 printf("%llu files missing\n", (unsigned long long)n_files); 417 if (debug) { 418 n_blks += sblock->fs_ncg * 419 (cgdmin(sblock, 0) - cgsblock(sblock, 0)); 420 n_blks += cgsblock(sblock, 0) - cgbase(sblock, 0); 421 n_blks += howmany(sblock->fs_cssize, sblock->fs_fsize); 422 if (n_blks -= maxfsblock - (n_ffree + sblock->fs_frag * n_bfree)) 423 printf("%lld blocks missing\n", (long long)n_blks); 424 if (duplist != NULL) { 425 printf("The following duplicate blocks remain:"); 426 for (dp = duplist; dp; dp = dp->next) 427 printf(" %lld,", (long long)dp->dup); 428 printf("\n"); 429 } 430 if (zlnhead != NULL) { 431 printf("The following zero link count inodes remain:"); 432 for (zlnp = zlnhead; zlnp; zlnp = zlnp->next) 433 printf(" %llu,", 434 (unsigned long long)zlnp->zlncnt); 435 printf("\n"); 436 } 437 } 438 zlnhead = (struct zlncnt *)0; 439 duplist = (struct dups *)0; 440 muldup = (struct dups *)0; 441 inocleanup(); 442 if (fsmodified) { 443 sblock->fs_time = time(NULL); 444 sbdirty(); 445 } 446 if (rerun) 447 markclean = 0; 448 #if LITE2BORKEN 449 if (!hotroot()) { 450 ckfini(1); 451 } else { 452 struct statvfs stfs_buf; 453 /* 454 * Check to see if root is mounted read-write. 455 */ 456 if (statvfs("/", &stfs_buf) == 0) 457 flags = stfs_buf.f_flag; 458 else 459 flags = 0; 460 if (markclean) 461 markclean = flags & MNT_RDONLY; 462 ckfini(1); 463 } 464 #else 465 ckfini(1); 466 #endif 467 for (cylno = 0; cylno < sblock->fs_ncg; cylno++) 468 if (inostathead[cylno].il_stat != NULL) 469 free(inostathead[cylno].il_stat); 470 free(inostathead); 471 inostathead = NULL; 472 473 if (!resolved || rerun) { 474 pwarn("\n***** UNRESOLVED INCONSISTENCIES REMAIN *****\n"); 475 returntosingle = 1; 476 } 477 if (!fsmodified) 478 return FSCK_EXIT_OK; 479 if (!preen) 480 pwarn("\n***** FILE SYSTEM WAS MODIFIED *****\n"); 481 if (rerun) 482 pwarn("\n***** PLEASE RERUN FSCK *****\n"); 483 if (hotroot()) { 484 struct statvfs stfs_buf; 485 /* 486 * We modified the root. Do a mount update on 487 * it, unless it is read-write, so we can continue. 488 */ 489 if (statvfs("/", &stfs_buf) == 0) { 490 long flags = stfs_buf.f_flag; 491 struct ufs_args args; 492 493 if (flags & MNT_RDONLY) { 494 args.fspec = 0; 495 flags |= MNT_UPDATE | MNT_RELOAD; 496 if (mount(MOUNT_FFS, "/", flags, 497 &args, sizeof args) == 0) 498 return FSCK_EXIT_OK; 499 } 500 } 501 if (!preen) 502 pwarn("\n***** REBOOT NOW *****\n"); 503 sync(); 504 return FSCK_EXIT_ROOT_CHANGED; 505 } 506 return FSCK_EXIT_OK; 507 } 508 509 static void 510 usage(void) 511 { 512 513 (void) fprintf(stderr, 514 "usage: %s [-adFfPpqUX] [-B byteorder] [-b block] [-c level] " 515 "[-m mode]\n" 516 "\t[-x snap-backup] [-y | -n] filesystem ...\n", 517 getprogname()); 518 exit(FSCK_EXIT_USAGE); 519 } 520