main.c revision 1.78
1 /* $NetBSD: main.c,v 1.78 2011/03/06 17:08:16 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 1.78 2011/03/06 17:08:16 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 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; 220 221 if (!forceimage) 222 path = strdup(blockcheck(*argv)); 223 else 224 path = strdup(*argv); 225 226 if (path == NULL) 227 pfatal("Can't check %s\n", *argv); 228 229 if (snap_backup || snap_internal) { 230 char *snap_dev; 231 int snapfd; 232 233 snapfd = snap_open(*argv, snap_backup, NULL, &snap_dev); 234 if (snapfd < 0) { 235 warn("can't take snapshot of %s", *argv); 236 goto next; 237 } 238 nret = checkfilesys(blockcheck(snap_dev), path, 0); 239 if (ret < nret) 240 ret = nret; 241 close(snapfd); 242 } else { 243 nret = checkfilesys(path, path, 0); 244 if (ret < nret) 245 ret = nret; 246 } 247 next: 248 free(path); 249 argv++; 250 } 251 252 return returntosingle ? FSCK_EXIT_UNRESOLVED : ret; 253 } 254 255 static int 256 argtoi(int flag, const char *req, const char *str, int base) 257 { 258 char *cp; 259 int ret; 260 261 ret = (int)strtol(str, &cp, base); 262 if (cp == str || *cp) 263 errx(FSCK_EXIT_USAGE, "-%c flag requires a %s", 264 flag, req); 265 return (ret); 266 } 267 268 /* 269 * Check the specified filesystem. 270 */ 271 /* ARGSUSED */ 272 static int 273 checkfilesys(const char *filesys, const char *origfs, int child) 274 { 275 daddr_t n_ffree, n_bfree; 276 struct dups *dp; 277 struct zlncnt *zlnp; 278 int cylno; 279 #ifdef LITE2BORKEN 280 int flags; 281 #endif 282 #ifdef PROGRESS 283 /* 284 * In prune mode, how far does the progress bar travel during 285 * each pass? (In non-prune mode, each pass has a separate 286 * progress bar that travels from 0 to 100%.) 287 * 288 * The numbers below are percentages, intended to correspond 289 * roughly to the cumulative time up to the end of each pass. 290 * They don't have to be accurate. In reality, on a large 291 * file system, Pass 1 and Pass 2 together are likely to use 292 * significantly more than the 95% reflected below, so users 293 * will get a pleasant surprise when the last 5% of the progress 294 * bar runs more quickly than they had expected. 295 */ 296 static int progress_limits[] = {0, 20, 95, 96, 97, 100}; 297 #endif /* PROGRESS */ 298 299 if (preen && child) 300 (void)signal(SIGQUIT, voidquit); 301 setcdevname(filesys, preen); 302 if (debug && preen) 303 pwarn("starting\n"); 304 switch (setup(filesys, origfs)) { 305 case 0: 306 if (preen) 307 pfatal("CAN'T CHECK FILE SYSTEM."); 308 /* fall through */ 309 case -1: 310 return FSCK_EXIT_OK; 311 } 312 /* 313 * Cleared if any questions answered no. Used to decide if 314 * the superblock should be marked clean. 315 */ 316 resolved = 1; 317 318 #ifdef PROGRESS 319 progress_switch(progress); 320 progress_init(); 321 #endif /* PROGRESS */ 322 323 /* 324 * 1: scan inodes tallying blocks used 325 */ 326 if (preen == 0) { 327 pwarn("** Last Mounted on %s\n", sblock->fs_fsmnt); 328 if (hotroot()) 329 pwarn("** Root file system\n"); 330 pwarn("** Phase 1 - Check Blocks and Sizes\n"); 331 } 332 #ifdef PROGRESS 333 if (preen) 334 progress_setrange(0, progress_limits[1]); 335 #endif /* PROGRESS */ 336 pass1(); 337 338 /* 339 * 1b: locate first references to duplicates, if any 340 */ 341 if (duplist) { 342 if (preen) 343 pfatal("INTERNAL ERROR: dups with -p\n"); 344 if (usedsoftdep) 345 pfatal("INTERNAL ERROR: dups with softdep\n"); 346 pwarn("** Phase 1b - Rescan For More DUPS\n"); 347 pass1b(); 348 } 349 350 /* 351 * 2: traverse directories from root to mark all connected directories 352 */ 353 if (preen == 0) 354 pwarn("** Phase 2 - Check Pathnames\n"); 355 #ifdef PROGRESS 356 if (preen) 357 progress_sethighlim(progress_limits[2]); 358 #endif /* PROGRESS */ 359 pass2(); 360 361 /* 362 * 3: scan inodes looking for disconnected directories 363 */ 364 if (preen == 0) 365 pwarn("** Phase 3 - Check Connectivity\n"); 366 #ifdef PROGRESS 367 if (preen) 368 progress_sethighlim(progress_limits[3]); 369 #endif /* PROGRESS */ 370 pass3(); 371 372 /* 373 * 4: scan inodes looking for disconnected files; check reference counts 374 */ 375 if (preen == 0) 376 pwarn("** Phase 4 - Check Reference Counts\n"); 377 #ifdef PROGRESS 378 if (preen) 379 progress_sethighlim(progress_limits[4]); 380 #endif /* PROGRESS */ 381 pass4(); 382 383 /* 384 * 5: check and repair resource counts in cylinder groups 385 */ 386 if (preen == 0) 387 pwarn("** Phase 5 - Check Cyl groups\n"); 388 #ifdef PROGRESS 389 if (preen) 390 progress_sethighlim(progress_limits[5]); 391 #endif /* PROGRESS */ 392 pass5(); 393 if (uquot_user_hash != NULL) { 394 if (preen == 0) 395 pwarn("** Phase 6 - Check Quotas\n"); 396 pass6(); 397 } 398 399 /* 400 * print out summary statistics 401 */ 402 n_ffree = sblock->fs_cstotal.cs_nffree; 403 n_bfree = sblock->fs_cstotal.cs_nbfree; 404 pwarn("%llu files, %lld used, %lld free ", 405 (unsigned long long)n_files, (long long)n_blks, 406 (long long)(n_ffree + sblock->fs_frag * n_bfree)); 407 printf("(%lld frags, %lld blocks, %lld.%lld%% fragmentation)\n", 408 (long long)n_ffree, (long long)n_bfree, 409 (long long)(n_ffree * 100 / (daddr_t)sblock->fs_dsize), 410 (long long)(((n_ffree * 1000 + (daddr_t)sblock->fs_dsize / 2) 411 / (daddr_t)sblock->fs_dsize) % 10)); 412 if (debug && 413 (n_files -= maxino - ROOTINO - sblock->fs_cstotal.cs_nifree)) 414 printf("%llu files missing\n", (unsigned long long)n_files); 415 if (debug) { 416 n_blks += sblock->fs_ncg * 417 (cgdmin(sblock, 0) - cgsblock(sblock, 0)); 418 n_blks += cgsblock(sblock, 0) - cgbase(sblock, 0); 419 n_blks += howmany(sblock->fs_cssize, sblock->fs_fsize); 420 if (n_blks -= maxfsblock - (n_ffree + sblock->fs_frag * n_bfree)) 421 printf("%lld blocks missing\n", (long long)n_blks); 422 if (duplist != NULL) { 423 printf("The following duplicate blocks remain:"); 424 for (dp = duplist; dp; dp = dp->next) 425 printf(" %lld,", (long long)dp->dup); 426 printf("\n"); 427 } 428 if (zlnhead != NULL) { 429 printf("The following zero link count inodes remain:"); 430 for (zlnp = zlnhead; zlnp; zlnp = zlnp->next) 431 printf(" %llu,", 432 (unsigned long long)zlnp->zlncnt); 433 printf("\n"); 434 } 435 } 436 zlnhead = (struct zlncnt *)0; 437 duplist = (struct dups *)0; 438 muldup = (struct dups *)0; 439 inocleanup(); 440 if (fsmodified) { 441 sblock->fs_time = time(NULL); 442 sbdirty(); 443 } 444 if (rerun) 445 markclean = 0; 446 #if LITE2BORKEN 447 if (!hotroot()) { 448 ckfini(); 449 } else { 450 struct statvfs stfs_buf; 451 /* 452 * Check to see if root is mounted read-write. 453 */ 454 if (statvfs("/", &stfs_buf) == 0) 455 flags = stfs_buf.f_flag; 456 else 457 flags = 0; 458 if (markclean) 459 markclean = flags & MNT_RDONLY; 460 ckfini(); 461 } 462 #else 463 ckfini(); 464 #endif 465 for (cylno = 0; cylno < sblock->fs_ncg; cylno++) 466 if (inostathead[cylno].il_stat != NULL) 467 free(inostathead[cylno].il_stat); 468 free(inostathead); 469 inostathead = NULL; 470 471 if (!resolved || rerun) { 472 pwarn("\n***** UNRESOLVED INCONSISTENCIES REMAIN *****\n"); 473 returntosingle = 1; 474 } 475 if (!fsmodified) 476 return FSCK_EXIT_OK; 477 if (!preen) 478 pwarn("\n***** FILE SYSTEM WAS MODIFIED *****\n"); 479 if (rerun) 480 pwarn("\n***** PLEASE RERUN FSCK *****\n"); 481 if (hotroot()) { 482 struct statvfs stfs_buf; 483 /* 484 * We modified the root. Do a mount update on 485 * it, unless it is read-write, so we can continue. 486 */ 487 if (statvfs("/", &stfs_buf) == 0) { 488 long flags = stfs_buf.f_flag; 489 struct ufs_args args; 490 491 if (flags & MNT_RDONLY) { 492 args.fspec = 0; 493 flags |= MNT_UPDATE | MNT_RELOAD; 494 if (mount(MOUNT_FFS, "/", flags, 495 &args, sizeof args) == 0) 496 return FSCK_EXIT_OK; 497 } 498 } 499 if (!preen) 500 pwarn("\n***** REBOOT NOW *****\n"); 501 sync(); 502 return FSCK_EXIT_ROOT_CHANGED; 503 } 504 return FSCK_EXIT_OK; 505 } 506 507 static void 508 usage(void) 509 { 510 511 (void) fprintf(stderr, 512 "usage: %s [-adFfPpqUX] [-B byteorder] [-b block] [-c level] " 513 "[-m mode]\n" 514 "\t[-x snap-backup] [-y | -n] filesystem ...\n", 515 getprogname()); 516 exit(FSCK_EXIT_USAGE); 517 } 518
Indexes created Tue Sep 30 07:10:03 GMT 2025