1 /* $NetBSD: main.c,v 1.41 2002/05/06 03:17:43 lukem 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. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 #ifndef lint 38 __COPYRIGHT("@(#) Copyright (c) 1980, 1986, 1993\n\ 39 The Regents of the University of California. All rights reserved.\n"); 40 #endif /* not lint */ 41 42 #ifndef lint 43 #if 0 44 static char sccsid[] = "@(#)main.c 8.6 (Berkeley) 5/14/95"; 45 #else 46 __RCSID("$NetBSD: main.c,v 1.41 2002/05/06 03:17:43 lukem Exp $"); 47 #endif 48 #endif /* not lint */ 49 50 #include <sys/param.h> 51 #include <sys/time.h> 52 #include <sys/mount.h> 53 #include <sys/resource.h> 54 55 #include <ufs/ufs/dinode.h> 56 #include <ufs/ufs/ufsmount.h> 57 #include <ufs/ffs/fs.h> 58 #include <ufs/ffs/ffs_extern.h> 59 60 #include <ctype.h> 61 #include <err.h> 62 #include <fstab.h> 63 #include <string.h> 64 #include <time.h> 65 #include <ctype.h> 66 #include <stdio.h> 67 #include <stdlib.h> 68 #include <unistd.h> 69 70 #include "fsck.h" 71 #include "extern.h" 72 #include "fsutil.h" 73 74 int returntosingle; 75 76 int main __P((int, char *[])); 77 78 static int argtoi __P((int, char *, char *, int)); 79 static int checkfilesys __P((const char *, char *, long, int)); 80 static void usage __P((void)); 81 82 int 83 main(argc, argv) 84 int argc; 85 char *argv[]; 86 { 87 struct rlimit r; 88 int ch; 89 int ret = 0; 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 while ((ch = getopt(argc, argv, "B:b:c:dFfm:npy")) != -1) { 101 switch (ch) { 102 case 'B': 103 if (strcmp(optarg, "be") == 0) 104 endian = BIG_ENDIAN; 105 else if (strcmp(optarg, "le") == 0) 106 endian = LITTLE_ENDIAN; 107 else usage(); 108 break; 109 110 case 'b': 111 skipclean = 0; 112 bflag = argtoi('b', "number", optarg, 10); 113 printf("Alternate super block location: %d\n", bflag); 114 break; 115 116 case 'c': 117 skipclean = 0; 118 cvtlevel = argtoi('c', "conversion level", optarg, 10); 119 break; 120 121 case 'd': 122 debug++; 123 break; 124 125 case 'F': 126 forceimage = 1; 127 break; 128 129 case 'f': 130 skipclean = 0; 131 break; 132 133 case 'm': 134 lfmode = argtoi('m', "mode", optarg, 8); 135 if (lfmode &~ 07777) 136 errx(EEXIT, "bad mode to -m: %o", lfmode); 137 printf("** lost+found creation mode %o\n", lfmode); 138 break; 139 140 case 'n': 141 nflag++; 142 yflag = 0; 143 break; 144 145 case 'p': 146 preen++; 147 break; 148 149 case 'y': 150 yflag++; 151 nflag = 0; 152 break; 153 154 default: 155 usage(); 156 } 157 } 158 159 argc -= optind; 160 argv += optind; 161 162 if (!argc) 163 usage(); 164 165 if (signal(SIGINT, SIG_IGN) != SIG_IGN) 166 (void)signal(SIGINT, catch); 167 if (preen) 168 (void)signal(SIGQUIT, catchquit); 169 signal(SIGINFO, infohandler); 170 171 while (argc-- > 0) 172 (void)checkfilesys(blockcheck(*argv++), 0, 0L, 0); 173 174 if (returntosingle) 175 ret = 2; 176 177 exit(ret); 178 } 179 180 static int 181 argtoi(flag, req, str, base) 182 int flag; 183 char *req, *str; 184 int base; 185 { 186 char *cp; 187 int ret; 188 189 ret = (int)strtol(str, &cp, base); 190 if (cp == str || *cp) 191 errx(EEXIT, "-%c flag requires a %s", flag, req); 192 return (ret); 193 } 194 195 /* 196 * Check the specified filesystem. 197 */ 198 /* ARGSUSED */ 199 static int 200 checkfilesys(filesys, mntpt, auxdata, child) 201 const char *filesys; 202 char *mntpt; 203 long auxdata; 204 int child; 205 { 206 ufs_daddr_t n_ffree, n_bfree; 207 struct dups *dp; 208 struct zlncnt *zlnp; 209 #ifdef LITE2BORKEN 210 int flags; 211 #endif 212 213 if (preen && child) 214 (void)signal(SIGQUIT, voidquit); 215 setcdevname(filesys, preen); 216 if (debug && preen) 217 pwarn("starting\n"); 218 switch (setup(filesys)) { 219 case 0: 220 if (preen) 221 pfatal("CAN'T CHECK FILE SYSTEM."); 222 /* fall through */ 223 case -1: 224 return (0); 225 } 226 /* 227 * Cleared if any questions answered no. Used to decide if 228 * the superblock should be marked clean. 229 */ 230 resolved = 1; 231 /* 232 * 1: scan inodes tallying blocks used 233 */ 234 if (preen == 0) { 235 printf("** Last Mounted on %s\n", sblock->fs_fsmnt); 236 if (hotroot()) 237 printf("** Root file system\n"); 238 printf("** Phase 1 - Check Blocks and Sizes\n"); 239 } 240 pass1(); 241 242 /* 243 * 1b: locate first references to duplicates, if any 244 */ 245 if (duplist) { 246 if (preen) 247 pfatal("INTERNAL ERROR: dups with -p\n"); 248 if (usedsoftdep) 249 pfatal("INTERNAL ERROR: dups with softdep\n"); 250 printf("** Phase 1b - Rescan For More DUPS\n"); 251 pass1b(); 252 } 253 254 /* 255 * 2: traverse directories from root to mark all connected directories 256 */ 257 if (preen == 0) 258 printf("** Phase 2 - Check Pathnames\n"); 259 pass2(); 260 261 /* 262 * 3: scan inodes looking for disconnected directories 263 */ 264 if (preen == 0) 265 printf("** Phase 3 - Check Connectivity\n"); 266 pass3(); 267 268 /* 269 * 4: scan inodes looking for disconnected files; check reference counts 270 */ 271 if (preen == 0) 272 printf("** Phase 4 - Check Reference Counts\n"); 273 pass4(); 274 275 /* 276 * 5: check and repair resource counts in cylinder groups 277 */ 278 if (preen == 0) 279 printf("** Phase 5 - Check Cyl groups\n"); 280 pass5(); 281 282 /* 283 * print out summary statistics 284 */ 285 n_ffree = sblock->fs_cstotal.cs_nffree; 286 n_bfree = sblock->fs_cstotal.cs_nbfree; 287 pwarn("%d files, %d used, %d free ", 288 n_files, n_blks, n_ffree + sblock->fs_frag * n_bfree); 289 printf("(%d frags, %d blocks, %d.%d%% fragmentation)\n", 290 n_ffree, n_bfree, (n_ffree * 100) / sblock->fs_dsize, 291 ((n_ffree * 1000 + sblock->fs_dsize / 2) / sblock->fs_dsize) % 10); 292 if (debug && 293 (n_files -= maxino - ROOTINO - sblock->fs_cstotal.cs_nifree)) 294 printf("%d files missing\n", n_files); 295 if (debug) { 296 n_blks += sblock->fs_ncg * 297 (cgdmin(sblock, 0) - cgsblock(sblock, 0)); 298 n_blks += cgsblock(sblock, 0) - cgbase(sblock, 0); 299 n_blks += howmany(sblock->fs_cssize, sblock->fs_fsize); 300 if (n_blks -= maxfsblock - (n_ffree + sblock->fs_frag * n_bfree)) 301 printf("%d blocks missing\n", n_blks); 302 if (duplist != NULL) { 303 printf("The following duplicate blocks remain:"); 304 for (dp = duplist; dp; dp = dp->next) 305 printf(" %d,", dp->dup); 306 printf("\n"); 307 } 308 if (zlnhead != NULL) { 309 printf("The following zero link count inodes remain:"); 310 for (zlnp = zlnhead; zlnp; zlnp = zlnp->next) 311 printf(" %u,", zlnp->zlncnt); 312 printf("\n"); 313 } 314 } 315 zlnhead = (struct zlncnt *)0; 316 duplist = (struct dups *)0; 317 muldup = (struct dups *)0; 318 inocleanup(); 319 if (fsmodified) { 320 time_t t; 321 (void)time(&t); 322 sblock->fs_time = t; 323 sbdirty(); 324 } 325 if (rerun) 326 markclean = 0; 327 #if LITE2BORKEN 328 if (!hotroot()) { 329 ckfini(); 330 } else { 331 struct statfs stfs_buf; 332 /* 333 * Check to see if root is mounted read-write. 334 */ 335 if (statfs("/", &stfs_buf) == 0) 336 flags = stfs_buf.f_flags; 337 else 338 flags = 0; 339 if (markclean) 340 markclean = flags & MNT_RDONLY; 341 ckfini(); 342 } 343 #else 344 ckfini(); 345 #endif 346 free(blockmap); 347 free(statemap); 348 free((char *)lncntp); 349 if (!fsmodified) 350 return (0); 351 if (!preen) 352 printf("\n***** FILE SYSTEM WAS MODIFIED *****\n"); 353 if (rerun) 354 printf("\n***** PLEASE RERUN FSCK *****\n"); 355 if (hotroot()) { 356 struct statfs stfs_buf; 357 /* 358 * We modified the root. Do a mount update on 359 * it, unless it is read-write, so we can continue. 360 */ 361 if (statfs("/", &stfs_buf) == 0) { 362 long flags = stfs_buf.f_flags; 363 struct ufs_args args; 364 int ret; 365 366 if (flags & MNT_RDONLY) { 367 args.fspec = 0; 368 args.export.ex_flags = 0; 369 args.export.ex_root = 0; 370 flags |= MNT_UPDATE | MNT_RELOAD; 371 ret = mount(MOUNT_FFS, "/", flags, &args); 372 if (ret == 0) 373 return(0); 374 } 375 } 376 if (!preen) 377 printf("\n***** REBOOT NOW *****\n"); 378 sync(); 379 return (4); 380 } 381 return (0); 382 } 383 384 static void 385 usage() 386 { 387 388 (void) fprintf(stderr, 389 "Usage: %s [-dFfnpy] [-B be|le] [-b block] [-c level] [-m mode]" 390 " filesystem ...\n", 391 getprogname()); 392 exit(1); 393 } 394 395