main.c revision 1.67
1 /* $NetBSD: main.c,v 1.67 2008/02/23 21:41:48 christos 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\n\ 35 The Regents of the University of California. All rights reserved.\n"); 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 1.67 2008/02/23 21:41:48 christos 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 <fstab.h> 59 #include <string.h> 60 #include <time.h> 61 #include <stdio.h> 62 #include <stdlib.h> 63 #include <unistd.h> 64 #include <signal.h> 65 66 #include "fsck.h" 67 #include "extern.h" 68 #include "fsutil.h" 69 #include "exitvalues.h" 70 71 int progress = 0; 72 int returntosingle = 0; 73 74 static int argtoi(int, const char *, const char *, int); 75 static int checkfilesys(const char *, char *, long, int); 76 static void usage(void); 77 78 int 79 main(int argc, char *argv[]) 80 { 81 struct rlimit r; 82 int ch; 83 int ret = FSCK_EXIT_OK; 84 85 if (getrlimit(RLIMIT_DATA, &r) == 0) { 86 r.rlim_cur = r.rlim_max; 87 (void) setrlimit(RLIMIT_DATA, &r); 88 } 89 sync(); 90 skipclean = 1; 91 markclean = 1; 92 forceimage = 0; 93 endian = 0; 94 isappleufs = 0; 95 while ((ch = getopt(argc, argv, "aB:b:c:dFfm:npPqy")) != -1) { 96 switch (ch) { 97 case 'a': 98 isappleufs = 1; 99 break; 100 101 case 'B': 102 if (strcmp(optarg, "be") == 0) 103 endian = BIG_ENDIAN; 104 else if (strcmp(optarg, "le") == 0) 105 endian = LITTLE_ENDIAN; 106 else usage(); 107 break; 108 109 case 'b': 110 skipclean = 0; 111 bflag = argtoi('b', "number", optarg, 10); 112 printf("Alternate super block location: %d\n", bflag); 113 break; 114 115 case 'c': 116 skipclean = 0; 117 cvtlevel = argtoi('c', "conversion level", optarg, 10); 118 if (cvtlevel > 4) { 119 cvtlevel = 4; 120 warnx("Using maximum conversion level of %d\n", 121 cvtlevel); 122 } 123 break; 124 125 case 'd': 126 debug++; 127 break; 128 129 case 'F': 130 forceimage = 1; 131 break; 132 133 case 'f': 134 skipclean = 0; 135 break; 136 137 case 'm': 138 lfmode = argtoi('m', "mode", optarg, 8); 139 if (lfmode &~ 07777) 140 errx(FSCK_EXIT_USAGE, "bad mode to -m: %o", 141 lfmode); 142 printf("** lost+found creation mode %o\n", lfmode); 143 break; 144 145 case 'n': 146 nflag++; 147 yflag = 0; 148 break; 149 150 case 'p': 151 preen++; 152 break; 153 154 case 'P': 155 progress = 1; 156 break; 157 158 case 'q': 159 quiet++; 160 break; 161 162 case 'y': 163 yflag++; 164 nflag = 0; 165 break; 166 167 default: 168 usage(); 169 } 170 } 171 172 argc -= optind; 173 argv += optind; 174 175 if (!argc) 176 usage(); 177 178 if (debug) 179 progress = 0; 180 181 if (signal(SIGINT, SIG_IGN) != SIG_IGN) 182 (void)signal(SIGINT, catch); 183 if (preen) 184 (void)signal(SIGQUIT, catchquit); 185 #ifdef PROGRESS 186 if (progress) { 187 progress_ttywidth(0); 188 (void)signal(SIGWINCH, progress_ttywidth); 189 } 190 #endif /* ! PROGRESS */ 191 signal(SIGINFO, infohandler); 192 193 while (argc-- > 0) { 194 const char *path = blockcheck(*argv); 195 196 if (path == NULL) 197 pfatal("Can't check %s\n", *argv); 198 else { 199 int nret = checkfilesys(blockcheck(*argv), 0, 0L, 0); 200 if (ret < nret) 201 ret = nret; 202 } 203 argv++; 204 } 205 206 return returntosingle ? FSCK_EXIT_UNRESOLVED : ret; 207 } 208 209 static int 210 argtoi(int flag, const char *req, const char *str, int base) 211 { 212 char *cp; 213 int ret; 214 215 ret = (int)strtol(str, &cp, base); 216 if (cp == str || *cp) 217 errx(FSCK_EXIT_USAGE, "-%c flag requires a %s", 218 flag, req); 219 return (ret); 220 } 221 222 /* 223 * Check the specified filesystem. 224 */ 225 /* ARGSUSED */ 226 static int 227 checkfilesys(const char *filesys, char *mntpt, long auxdata, int child) 228 { 229 daddr_t n_ffree, n_bfree; 230 struct dups *dp; 231 struct zlncnt *zlnp; 232 int cylno; 233 #ifdef LITE2BORKEN 234 int flags; 235 #endif 236 #ifdef PROGRESS 237 /* 238 * In prune mode, how far does the progress bar travel during 239 * each pass? (In non-prune mode, each pass has a separate 240 * progress bar that travels from 0 to 100%.) 241 * 242 * The numbers below are percentages, intended to correspond 243 * roughly to the cumulative time up to the end of each pass. 244 * They don't have to be accurate. In reality, on a large 245 * file system, Pass 1 and Pass 2 together are likely to use 246 * significantly more than the 95% reflected below, so users 247 * will get a pleasant surprise when the last 5% of the progress 248 * bar runs more quickly than they had expected. 249 */ 250 static int progress_limits[] = {0, 20, 95, 96, 97, 100}; 251 #endif /* PROGRESS */ 252 253 if (preen && child) 254 (void)signal(SIGQUIT, voidquit); 255 setcdevname(filesys, preen); 256 if (debug && preen) 257 pwarn("starting\n"); 258 switch (setup(filesys)) { 259 case 0: 260 if (preen) 261 pfatal("CAN'T CHECK FILE SYSTEM."); 262 /* fall through */ 263 case -1: 264 return FSCK_EXIT_OK; 265 } 266 /* 267 * Cleared if any questions answered no. Used to decide if 268 * the superblock should be marked clean. 269 */ 270 resolved = 1; 271 272 #ifdef PROGRESS 273 progress_switch(progress); 274 progress_init(); 275 #endif /* PROGRESS */ 276 277 /* 278 * 1: scan inodes tallying blocks used 279 */ 280 if (preen == 0) { 281 pwarn("** Last Mounted on %s\n", sblock->fs_fsmnt); 282 if (hotroot()) 283 pwarn("** Root file system\n"); 284 pwarn("** Phase 1 - Check Blocks and Sizes\n"); 285 } 286 #ifdef PROGRESS 287 if (preen) 288 progress_setrange(0, progress_limits[1]); 289 #endif /* PROGRESS */ 290 pass1(); 291 292 /* 293 * 1b: locate first references to duplicates, if any 294 */ 295 if (duplist) { 296 if (preen) 297 pfatal("INTERNAL ERROR: dups with -p\n"); 298 if (usedsoftdep) 299 pfatal("INTERNAL ERROR: dups with softdep\n"); 300 pwarn("** Phase 1b - Rescan For More DUPS\n"); 301 pass1b(); 302 } 303 304 /* 305 * 2: traverse directories from root to mark all connected directories 306 */ 307 if (preen == 0) 308 pwarn("** Phase 2 - Check Pathnames\n"); 309 #ifdef PROGRESS 310 if (preen) 311 progress_sethighlim(progress_limits[2]); 312 #endif /* PROGRESS */ 313 pass2(); 314 315 /* 316 * 3: scan inodes looking for disconnected directories 317 */ 318 if (preen == 0) 319 pwarn("** Phase 3 - Check Connectivity\n"); 320 #ifdef PROGRESS 321 if (preen) 322 progress_sethighlim(progress_limits[3]); 323 #endif /* PROGRESS */ 324 pass3(); 325 326 /* 327 * 4: scan inodes looking for disconnected files; check reference counts 328 */ 329 if (preen == 0) 330 pwarn("** Phase 4 - Check Reference Counts\n"); 331 #ifdef PROGRESS 332 if (preen) 333 progress_sethighlim(progress_limits[4]); 334 #endif /* PROGRESS */ 335 pass4(); 336 337 /* 338 * 5: check and repair resource counts in cylinder groups 339 */ 340 if (preen == 0) 341 pwarn("** Phase 5 - Check Cyl groups\n"); 342 #ifdef PROGRESS 343 if (preen) 344 progress_sethighlim(progress_limits[5]); 345 #endif /* PROGRESS */ 346 pass5(); 347 348 /* 349 * print out summary statistics 350 */ 351 n_ffree = sblock->fs_cstotal.cs_nffree; 352 n_bfree = sblock->fs_cstotal.cs_nbfree; 353 pwarn("%llu files, %lld used, %lld free ", 354 (unsigned long long)n_files, (long long)n_blks, 355 (long long)(n_ffree + sblock->fs_frag * n_bfree)); 356 printf("(%lld frags, %lld blocks, %lld.%lld%% fragmentation)\n", 357 (long long)n_ffree, (long long)n_bfree, 358 (long long)(n_ffree * 100 / (daddr_t)sblock->fs_dsize), 359 (long long)(((n_ffree * 1000 + (daddr_t)sblock->fs_dsize / 2) 360 / (daddr_t)sblock->fs_dsize) % 10)); 361 if (debug && 362 (n_files -= maxino - ROOTINO - sblock->fs_cstotal.cs_nifree)) 363 printf("%llu files missing\n", (unsigned long long)n_files); 364 if (debug) { 365 n_blks += sblock->fs_ncg * 366 (cgdmin(sblock, 0) - cgsblock(sblock, 0)); 367 n_blks += cgsblock(sblock, 0) - cgbase(sblock, 0); 368 n_blks += howmany(sblock->fs_cssize, sblock->fs_fsize); 369 if (n_blks -= maxfsblock - (n_ffree + sblock->fs_frag * n_bfree)) 370 printf("%lld blocks missing\n", (long long)n_blks); 371 if (duplist != NULL) { 372 printf("The following duplicate blocks remain:"); 373 for (dp = duplist; dp; dp = dp->next) 374 printf(" %lld,", (long long)dp->dup); 375 printf("\n"); 376 } 377 if (zlnhead != NULL) { 378 printf("The following zero link count inodes remain:"); 379 for (zlnp = zlnhead; zlnp; zlnp = zlnp->next) 380 printf(" %llu,", 381 (unsigned long long)zlnp->zlncnt); 382 printf("\n"); 383 } 384 } 385 zlnhead = (struct zlncnt *)0; 386 duplist = (struct dups *)0; 387 muldup = (struct dups *)0; 388 inocleanup(); 389 if (fsmodified) { 390 sblock->fs_time = time(NULL); 391 sbdirty(); 392 } 393 if (rerun) 394 markclean = 0; 395 #if LITE2BORKEN 396 if (!hotroot()) { 397 ckfini(); 398 } else { 399 struct statvfs stfs_buf; 400 /* 401 * Check to see if root is mounted read-write. 402 */ 403 if (statvfs("/", &stfs_buf) == 0) 404 flags = stfs_buf.f_flag; 405 else 406 flags = 0; 407 if (markclean) 408 markclean = flags & MNT_RDONLY; 409 ckfini(); 410 } 411 #else 412 ckfini(); 413 #endif 414 for (cylno = 0; cylno < sblock->fs_ncg; cylno++) 415 if (inostathead[cylno].il_stat != NULL) 416 free(inostathead[cylno].il_stat); 417 free(inostathead); 418 inostathead = NULL; 419 420 if (!resolved || rerun) { 421 pwarn("\n***** UNRESOLVED INCONSISTENCIES REMAIN *****\n"); 422 returntosingle = 1; 423 } 424 if (!fsmodified) 425 return FSCK_EXIT_OK; 426 if (!preen) 427 pwarn("\n***** FILE SYSTEM WAS MODIFIED *****\n"); 428 if (rerun) 429 pwarn("\n***** PLEASE RERUN FSCK *****\n"); 430 if (hotroot()) { 431 struct statvfs stfs_buf; 432 /* 433 * We modified the root. Do a mount update on 434 * it, unless it is read-write, so we can continue. 435 */ 436 if (statvfs("/", &stfs_buf) == 0) { 437 long flags = stfs_buf.f_flag; 438 struct ufs_args args; 439 440 if (flags & MNT_RDONLY) { 441 args.fspec = 0; 442 flags |= MNT_UPDATE | MNT_RELOAD; 443 if (mount(MOUNT_FFS, "/", flags, 444 &args, sizeof args) == 0) 445 return FSCK_EXIT_OK; 446 } 447 } 448 if (!preen) 449 pwarn("\n***** REBOOT NOW *****\n"); 450 sync(); 451 return FSCK_EXIT_ROOT_CHANGED; 452 } 453 return FSCK_EXIT_OK; 454 } 455 456 static void 457 usage(void) 458 { 459 460 (void) fprintf(stderr, 461 "usage: %s [-adFfnPpqy] [-B be|le] [-b block] [-c level] [-m mode]" 462 " filesystem ...\n", 463 getprogname()); 464 exit(FSCK_EXIT_USAGE); 465 } 466 467
Indexes created Mon Sep 29 21:09:56 GMT 2025