main.c revision 1.76
1 /* $NetBSD: main.c,v 1.76 2010/04/11 08:23:51 hannken 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 1.76 2010/04/11 08:23:51 hannken 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 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 if (getrlimit(RLIMIT_DATA, &r) == 0) { 90 r.rlim_cur = r.rlim_max; 91 (void) setrlimit(RLIMIT_DATA, &r); 92 } 93 sync(); 94 skipclean = 1; 95 markclean = 1; 96 forceimage = 0; 97 endian = 0; 98 isappleufs = 0; 99 while ((ch = getopt(argc, argv, "aB:b:c:dFfm:npPqUyx:X")) != -1) { 100 switch (ch) { 101 case 'a': 102 isappleufs = 1; 103 break; 104 105 case 'B': 106 if (strcmp(optarg, "be") == 0) 107 endian = BIG_ENDIAN; 108 else if (strcmp(optarg, "le") == 0) 109 endian = LITTLE_ENDIAN; 110 else usage(); 111 break; 112 113 case 'b': 114 skipclean = 0; 115 bflag = argtoi('b', "number", optarg, 10); 116 printf("Alternate super block location: %d\n", bflag); 117 break; 118 119 case 'c': 120 skipclean = 0; 121 cvtlevel = argtoi('c', "conversion level", optarg, 10); 122 if (cvtlevel > 4) { 123 cvtlevel = 4; 124 warnx("Using maximum conversion level of %d\n", 125 cvtlevel); 126 } 127 break; 128 129 case 'd': 130 debug++; 131 break; 132 133 case 'F': 134 forceimage = 1; 135 break; 136 137 case 'f': 138 skipclean = 0; 139 break; 140 141 case 'm': 142 lfmode = argtoi('m', "mode", optarg, 8); 143 if (lfmode &~ 07777) 144 errx(FSCK_EXIT_USAGE, "bad mode to -m: %o", 145 lfmode); 146 printf("** lost+found creation mode %o\n", lfmode); 147 break; 148 149 case 'n': 150 nflag++; 151 yflag = 0; 152 break; 153 154 case 'p': 155 preen++; 156 break; 157 158 case 'P': 159 progress = 1; 160 break; 161 162 case 'q': 163 quiet++; 164 break; 165 #ifndef SMALL 166 case 'U': 167 Uflag++; 168 break; 169 #endif 170 171 case 'y': 172 yflag++; 173 nflag = 0; 174 break; 175 case 'x': 176 snap_backup = optarg; 177 break; 178 case 'X': 179 snap_internal = 1; 180 break; 181 182 default: 183 usage(); 184 } 185 } 186 187 if (snap_backup || snap_internal) { 188 if (!nflag || yflag) { 189 warnx("Cannot use -x or -X without -n\n"); 190 snap_backup = NULL; 191 snap_internal = 0; 192 } 193 } 194 195 196 argc -= optind; 197 argv += optind; 198 199 if (!argc) 200 usage(); 201 202 if (debug) 203 progress = 0; 204 205 if (signal(SIGINT, SIG_IGN) != SIG_IGN) 206 (void)signal(SIGINT, catch); 207 if (preen) 208 (void)signal(SIGQUIT, catchquit); 209 #ifdef PROGRESS 210 if (progress) { 211 progress_ttywidth(0); 212 (void)signal(SIGWINCH, progress_ttywidth); 213 } 214 #endif /* ! PROGRESS */ 215 signal(SIGINFO, infohandler); 216 217 while (argc-- > 0) { 218 int nret; 219 char *path = strdup(blockcheck(*argv)); 220 221 if (path == NULL) 222 pfatal("Can't check %s\n", *argv); 223 224 if (snap_backup || snap_internal) { 225 char *snap_dev; 226 int snapfd; 227 228 snapfd = snap_open(*argv, snap_backup, NULL, &snap_dev); 229 if (snapfd < 0) { 230 warn("can't take snapshot of %s", *argv); 231 goto next; 232 } 233 nret = checkfilesys(blockcheck(snap_dev), path, 0); 234 if (ret < nret) 235 ret = nret; 236 close(snapfd); 237 } else { 238 nret = checkfilesys(path, path, 0); 239 if (ret < nret) 240 ret = nret; 241 } 242 next: 243 free(path); 244 argv++; 245 } 246 247 return returntosingle ? FSCK_EXIT_UNRESOLVED : ret; 248 } 249 250 static int 251 argtoi(int flag, const char *req, const char *str, int base) 252 { 253 char *cp; 254 int ret; 255 256 ret = (int)strtol(str, &cp, base); 257 if (cp == str || *cp) 258 errx(FSCK_EXIT_USAGE, "-%c flag requires a %s", 259 flag, req); 260 return (ret); 261 } 262 263 /* 264 * Check the specified filesystem. 265 */ 266 /* ARGSUSED */ 267 static int 268 checkfilesys(const char *filesys, const char *origfs, int child) 269 { 270 daddr_t n_ffree, n_bfree; 271 struct dups *dp; 272 struct zlncnt *zlnp; 273 int cylno; 274 #ifdef LITE2BORKEN 275 int flags; 276 #endif 277 #ifdef PROGRESS 278 /* 279 * In prune mode, how far does the progress bar travel during 280 * each pass? (In non-prune mode, each pass has a separate 281 * progress bar that travels from 0 to 100%.) 282 * 283 * The numbers below are percentages, intended to correspond 284 * roughly to the cumulative time up to the end of each pass. 285 * They don't have to be accurate. In reality, on a large 286 * file system, Pass 1 and Pass 2 together are likely to use 287 * significantly more than the 95% reflected below, so users 288 * will get a pleasant surprise when the last 5% of the progress 289 * bar runs more quickly than they had expected. 290 */ 291 static int progress_limits[] = {0, 20, 95, 96, 97, 100}; 292 #endif /* PROGRESS */ 293 294 if (preen && child) 295 (void)signal(SIGQUIT, voidquit); 296 setcdevname(filesys, preen); 297 if (debug && preen) 298 pwarn("starting\n"); 299 switch (setup(filesys, origfs)) { 300 case 0: 301 if (preen) 302 pfatal("CAN'T CHECK FILE SYSTEM."); 303 /* fall through */ 304 case -1: 305 return FSCK_EXIT_OK; 306 } 307 /* 308 * Cleared if any questions answered no. Used to decide if 309 * the superblock should be marked clean. 310 */ 311 resolved = 1; 312 313 #ifdef PROGRESS 314 progress_switch(progress); 315 progress_init(); 316 #endif /* PROGRESS */ 317 318 /* 319 * 1: scan inodes tallying blocks used 320 */ 321 if (preen == 0) { 322 pwarn("** Last Mounted on %s\n", sblock->fs_fsmnt); 323 if (hotroot()) 324 pwarn("** Root file system\n"); 325 pwarn("** Phase 1 - Check Blocks and Sizes\n"); 326 } 327 #ifdef PROGRESS 328 if (preen) 329 progress_setrange(0, progress_limits[1]); 330 #endif /* PROGRESS */ 331 pass1(); 332 333 /* 334 * 1b: locate first references to duplicates, if any 335 */ 336 if (duplist) { 337 if (preen) 338 pfatal("INTERNAL ERROR: dups with -p\n"); 339 if (usedsoftdep) 340 pfatal("INTERNAL ERROR: dups with softdep\n"); 341 pwarn("** Phase 1b - Rescan For More DUPS\n"); 342 pass1b(); 343 } 344 345 /* 346 * 2: traverse directories from root to mark all connected directories 347 */ 348 if (preen == 0) 349 pwarn("** Phase 2 - Check Pathnames\n"); 350 #ifdef PROGRESS 351 if (preen) 352 progress_sethighlim(progress_limits[2]); 353 #endif /* PROGRESS */ 354 pass2(); 355 356 /* 357 * 3: scan inodes looking for disconnected directories 358 */ 359 if (preen == 0) 360 pwarn("** Phase 3 - Check Connectivity\n"); 361 #ifdef PROGRESS 362 if (preen) 363 progress_sethighlim(progress_limits[3]); 364 #endif /* PROGRESS */ 365 pass3(); 366 367 /* 368 * 4: scan inodes looking for disconnected files; check reference counts 369 */ 370 if (preen == 0) 371 pwarn("** Phase 4 - Check Reference Counts\n"); 372 #ifdef PROGRESS 373 if (preen) 374 progress_sethighlim(progress_limits[4]); 375 #endif /* PROGRESS */ 376 pass4(); 377 378 /* 379 * 5: check and repair resource counts in cylinder groups 380 */ 381 if (preen == 0) 382 pwarn("** Phase 5 - Check Cyl groups\n"); 383 #ifdef PROGRESS 384 if (preen) 385 progress_sethighlim(progress_limits[5]); 386 #endif /* PROGRESS */ 387 pass5(); 388 389 /* 390 * print out summary statistics 391 */ 392 n_ffree = sblock->fs_cstotal.cs_nffree; 393 n_bfree = sblock->fs_cstotal.cs_nbfree; 394 pwarn("%llu files, %lld used, %lld free ", 395 (unsigned long long)n_files, (long long)n_blks, 396 (long long)(n_ffree + sblock->fs_frag * n_bfree)); 397 printf("(%lld frags, %lld blocks, %lld.%lld%% fragmentation)\n", 398 (long long)n_ffree, (long long)n_bfree, 399 (long long)(n_ffree * 100 / (daddr_t)sblock->fs_dsize), 400 (long long)(((n_ffree * 1000 + (daddr_t)sblock->fs_dsize / 2) 401 / (daddr_t)sblock->fs_dsize) % 10)); 402 if (debug && 403 (n_files -= maxino - ROOTINO - sblock->fs_cstotal.cs_nifree)) 404 printf("%llu files missing\n", (unsigned long long)n_files); 405 if (debug) { 406 n_blks += sblock->fs_ncg * 407 (cgdmin(sblock, 0) - cgsblock(sblock, 0)); 408 n_blks += cgsblock(sblock, 0) - cgbase(sblock, 0); 409 n_blks += howmany(sblock->fs_cssize, sblock->fs_fsize); 410 if (n_blks -= maxfsblock - (n_ffree + sblock->fs_frag * n_bfree)) 411 printf("%lld blocks missing\n", (long long)n_blks); 412 if (duplist != NULL) { 413 printf("The following duplicate blocks remain:"); 414 for (dp = duplist; dp; dp = dp->next) 415 printf(" %lld,", (long long)dp->dup); 416 printf("\n"); 417 } 418 if (zlnhead != NULL) { 419 printf("The following zero link count inodes remain:"); 420 for (zlnp = zlnhead; zlnp; zlnp = zlnp->next) 421 printf(" %llu,", 422 (unsigned long long)zlnp->zlncnt); 423 printf("\n"); 424 } 425 } 426 zlnhead = (struct zlncnt *)0; 427 duplist = (struct dups *)0; 428 muldup = (struct dups *)0; 429 inocleanup(); 430 if (fsmodified) { 431 sblock->fs_time = time(NULL); 432 sbdirty(); 433 } 434 if (rerun) 435 markclean = 0; 436 #if LITE2BORKEN 437 if (!hotroot()) { 438 ckfini(); 439 } else { 440 struct statvfs stfs_buf; 441 /* 442 * Check to see if root is mounted read-write. 443 */ 444 if (statvfs("/", &stfs_buf) == 0) 445 flags = stfs_buf.f_flag; 446 else 447 flags = 0; 448 if (markclean) 449 markclean = flags & MNT_RDONLY; 450 ckfini(); 451 } 452 #else 453 ckfini(); 454 #endif 455 for (cylno = 0; cylno < sblock->fs_ncg; cylno++) 456 if (inostathead[cylno].il_stat != NULL) 457 free(inostathead[cylno].il_stat); 458 free(inostathead); 459 inostathead = NULL; 460 461 if (!resolved || rerun) { 462 pwarn("\n***** UNRESOLVED INCONSISTENCIES REMAIN *****\n"); 463 returntosingle = 1; 464 } 465 if (!fsmodified) 466 return FSCK_EXIT_OK; 467 if (!preen) 468 pwarn("\n***** FILE SYSTEM WAS MODIFIED *****\n"); 469 if (rerun) 470 pwarn("\n***** PLEASE RERUN FSCK *****\n"); 471 if (hotroot()) { 472 struct statvfs stfs_buf; 473 /* 474 * We modified the root. Do a mount update on 475 * it, unless it is read-write, so we can continue. 476 */ 477 if (statvfs("/", &stfs_buf) == 0) { 478 long flags = stfs_buf.f_flag; 479 struct ufs_args args; 480 481 if (flags & MNT_RDONLY) { 482 args.fspec = 0; 483 flags |= MNT_UPDATE | MNT_RELOAD; 484 if (mount(MOUNT_FFS, "/", flags, 485 &args, sizeof args) == 0) 486 return FSCK_EXIT_OK; 487 } 488 } 489 if (!preen) 490 pwarn("\n***** REBOOT NOW *****\n"); 491 sync(); 492 return FSCK_EXIT_ROOT_CHANGED; 493 } 494 return FSCK_EXIT_OK; 495 } 496 497 static void 498 usage(void) 499 { 500 501 (void) fprintf(stderr, 502 "usage: %s [-adFfPpqUX] [-B byteorder] [-b block] [-c level] " 503 "[-m mode]\n" 504 "\t[-x snap-backup] [-y | -n] filesystem ...\n", 505 getprogname()); 506 exit(FSCK_EXIT_USAGE); 507 } 508
Indexes created Mon Sep 29 21:09:56 GMT 2025