main.c revision 1.23.4.1
1 /* $NetBSD: main.c,v 1.23.4.1 2009/03/24 21:33:59 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 /* 33 * Copyright (c) 1997 Manuel Bouyer. 34 * 35 * Redistribution and use in source and binary forms, with or without 36 * modification, are permitted provided that the following conditions 37 * are met: 38 * 1. Redistributions of source code must retain the above copyright 39 * notice, this list of conditions and the following disclaimer. 40 * 2. Redistributions in binary form must reproduce the above copyright 41 * notice, this list of conditions and the following disclaimer in the 42 * documentation and/or other materials provided with the distribution. 43 * 3. All advertising materials mentioning features or use of this software 44 * must display the following acknowledgement: 45 * This product includes software developed by Manuel Bouyer. 46 * 4. The name of the author may not be used to endorse or promote products 47 * derived from this software without specific prior written permission. 48 * 49 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 50 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 51 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 52 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 53 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 54 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 55 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 56 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 57 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 58 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 59 */ 60 61 #include <sys/cdefs.h> 62 #ifndef lint 63 __COPYRIGHT("@(#) Copyright (c) 1980, 1986, 1993\n\ 64 The Regents of the University of California. All rights reserved.\n"); 65 #endif /* not lint */ 66 67 #ifndef lint 68 #if 0 69 static char sccsid[] = "@(#)main.c 8.2 (Berkeley) 1/23/94"; 70 #else 71 __RCSID("$NetBSD: main.c,v 1.23.4.1 2009/03/24 21:33:59 bouyer Exp $"); 72 #endif 73 #endif /* not lint */ 74 75 #include <sys/param.h> 76 #include <sys/time.h> 77 #include <sys/mount.h> 78 #include <ufs/ufs/ufsmount.h> 79 #include <ufs/ext2fs/ext2fs_dinode.h> 80 #include <ufs/ext2fs/ext2fs.h> 81 #include <fstab.h> 82 #include <stdlib.h> 83 #include <string.h> 84 #include <ctype.h> 85 #include <stdio.h> 86 #include <time.h> 87 #include <unistd.h> 88 89 #include "fsck.h" 90 #include "extern.h" 91 #include "fsutil.h" 92 93 int returntosingle; 94 95 96 static int argtoi(int, const char *, const char *, int); 97 static int checkfilesys(const char *, char *, long, int); 98 static void usage(void); 99 100 int 101 main(int argc, char *argv[]) 102 { 103 int ch; 104 int ret = 0; 105 106 sync(); 107 skipclean = 1; 108 while ((ch = getopt(argc, argv, "b:dfm:npqUy")) != -1) { 109 switch (ch) { 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 'd': 117 debug++; 118 break; 119 120 case 'f': 121 skipclean = 0; 122 break; 123 124 case 'm': 125 lfmode = argtoi('m', "mode", optarg, 8); 126 if (lfmode &~ 07777) 127 errexit("bad mode to -m: %o\n", lfmode); 128 printf("** lost+found creation mode %o\n", lfmode); 129 break; 130 131 case 'n': 132 nflag++; 133 yflag = 0; 134 break; 135 136 case 'p': 137 preen++; 138 break; 139 140 case 'P': 141 /* Progress meter not implemented. */ 142 break; 143 144 case 'q': /* Quiet not implemented */ 145 break; 146 147 #ifndef SMALL 148 case 'U': 149 Uflag++; 150 break; 151 #endif 152 153 case 'y': 154 yflag++; 155 nflag = 0; 156 break; 157 158 default: 159 usage(); 160 } 161 } 162 163 argc -= optind; 164 argv += optind; 165 166 if (!argc) 167 usage(); 168 169 if (signal(SIGINT, SIG_IGN) != SIG_IGN) 170 (void)signal(SIGINT, catch); 171 if (preen) 172 (void)signal(SIGQUIT, catchquit); 173 174 while (argc-- > 0) 175 (void)checkfilesys(blockcheck(*argv++), 0, 0L, 0); 176 177 if (returntosingle) 178 ret = 2; 179 180 exit(ret); 181 } 182 183 static int 184 argtoi(int flag, const char *req, const char *str, int base) 185 { 186 char *cp; 187 int ret; 188 189 ret = (int)strtol(str, &cp, base); 190 if (cp == str || *cp) 191 errexit("-%c flag requires a %s\n", flag, req); 192 return (ret); 193 } 194 195 /* 196 * Check the specified filesystem. 197 */ 198 /* ARGSUSED */ 199 static int 200 checkfilesys(const char *filesys, char *mntpt, long auxdata, int child) 201 { 202 daddr_t n_bfree; 203 struct dups *dp; 204 struct zlncnt *zlnp; 205 int i; 206 207 if (preen && child) 208 (void)signal(SIGQUIT, voidquit); 209 setcdevname(filesys, preen); 210 if (debug && preen) 211 pwarn("starting\n"); 212 switch (setup(filesys)) { 213 case 0: 214 if (preen) 215 pfatal("CAN'T CHECK FILE SYSTEM."); 216 case -1: 217 return (0); 218 } 219 /* 220 * 1: scan inodes tallying blocks used 221 */ 222 if (preen == 0) { 223 if (sblock.e2fs.e2fs_rev > E2FS_REV0) { 224 printf("** Last Mounted on %s\n", 225 sblock.e2fs.e2fs_fsmnt); 226 } 227 if (hotroot()) 228 printf("** Root file system\n"); 229 printf("** Phase 1 - Check Blocks and Sizes\n"); 230 } 231 pass1(); 232 233 /* 234 * 1b: locate first references to duplicates, if any 235 */ 236 if (duplist) { 237 if (preen) 238 pfatal("INTERNAL ERROR: dups with -p"); 239 printf("** Phase 1b - Rescan For More DUPS\n"); 240 pass1b(); 241 } 242 243 /* 244 * 2: traverse directories from root to mark all connected directories 245 */ 246 if (preen == 0) 247 printf("** Phase 2 - Check Pathnames\n"); 248 pass2(); 249 250 /* 251 * 3: scan inodes looking for disconnected directories 252 */ 253 if (preen == 0) 254 printf("** Phase 3 - Check Connectivity\n"); 255 pass3(); 256 257 /* 258 * 4: scan inodes looking for disconnected files; check reference counts 259 */ 260 if (preen == 0) 261 printf("** Phase 4 - Check Reference Counts\n"); 262 pass4(); 263 264 /* 265 * 5: check and repair resource counts in cylinder groups 266 */ 267 if (preen == 0) 268 printf("** Phase 5 - Check Cyl groups\n"); 269 pass5(); 270 271 /* 272 * print out summary statistics 273 */ 274 n_bfree = sblock.e2fs.e2fs_fbcount; 275 276 pwarn("%lld files, %lld used, %lld free\n", 277 (long long)n_files, (long long)n_blks, (long long)n_bfree); 278 if (debug && 279 /* 9 reserved and unused inodes in FS */ 280 (n_files -= maxino - 9 - sblock.e2fs.e2fs_ficount)) 281 printf("%lld files missing\n", (long long)n_files); 282 if (debug) { 283 for (i = 0; i < sblock.e2fs_ncg; i++) 284 n_blks += cgoverhead(i); 285 n_blks += sblock.e2fs.e2fs_first_dblock; 286 if (n_blks -= maxfsblock - n_bfree) 287 printf("%lld blocks missing\n", (long long)n_blks); 288 if (duplist != NULL) { 289 printf("The following duplicate blocks remain:"); 290 for (dp = duplist; dp; dp = dp->next) 291 printf(" %lld,", (long long)dp->dup); 292 printf("\n"); 293 } 294 if (zlnhead != NULL) { 295 printf("The following zero link count inodes remain:"); 296 for (zlnp = zlnhead; zlnp; zlnp = zlnp->next) 297 printf(" %llu,", 298 (unsigned long long)zlnp->zlncnt); 299 printf("\n"); 300 } 301 } 302 zlnhead = (struct zlncnt *)0; 303 duplist = (struct dups *)0; 304 muldup = (struct dups *)0; 305 inocleanup(); 306 if (fsmodified) { 307 time_t t; 308 (void)time(&t); 309 sblock.e2fs.e2fs_wtime = t; 310 sblock.e2fs.e2fs_lastfsck = t; 311 sbdirty(); 312 } 313 ckfini(1); 314 free(blockmap); 315 free(statemap); 316 free((char *)lncntp); 317 if (!fsmodified) 318 return (0); 319 if (!preen) 320 printf("\n***** FILE SYSTEM WAS MODIFIED *****\n"); 321 if (rerun) 322 printf("\n***** PLEASE RERUN FSCK *****\n"); 323 if (hotroot()) { 324 struct statvfs stfs_buf; 325 /* 326 * We modified the root. Do a mount update on 327 * it, unless it is read-write, so we can continue. 328 */ 329 if (statvfs("/", &stfs_buf) == 0) { 330 long flags = stfs_buf.f_flag; 331 struct ufs_args args; 332 int ret; 333 334 if (flags & MNT_RDONLY) { 335 args.fspec = 0; 336 flags |= MNT_UPDATE | MNT_RELOAD; 337 ret = mount(MOUNT_EXT2FS, "/", flags, &args); 338 if (ret == 0) 339 return(0); 340 } 341 } 342 if (!preen) 343 printf("\n***** REBOOT NOW *****\n"); 344 sync(); 345 return (4); 346 } 347 return (0); 348 } 349 350 static void 351 usage(void) 352 { 353 354 (void) fprintf(stderr, 355 "usage: %s [-dfnpy] [-b block] [-c level] [-m mode] filesystem ...\n", 356 getprogname()); 357 exit(1); 358 } 359 360
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