1 /* $NetBSD: main.c,v 1.26 2007/07/16 17:06:52 pooka 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 1.26 2007/07/16 17:06:52 pooka 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 #include <signal.h> 89 90 #include "fsck.h" 91 #include "extern.h" 92 #include "fsutil.h" 93 94 int returntosingle; 95 96 97 static int argtoi(int, const char *, const char *, int); 98 static int checkfilesys(const char *, char *, long, int); 99 static void usage(void); 100 101 int 102 main(int argc, char *argv[]) 103 { 104 int ch; 105 int ret = 0; 106 107 sync(); 108 skipclean = 1; 109 while ((ch = getopt(argc, argv, "b:dfm:npqy")) != -1) { 110 switch (ch) { 111 case 'b': 112 skipclean = 0; 113 bflag = argtoi('b', "number", optarg, 10); 114 printf("Alternate super block location: %d\n", bflag); 115 break; 116 117 case 'd': 118 debug++; 119 break; 120 121 case 'f': 122 skipclean = 0; 123 break; 124 125 case 'm': 126 lfmode = argtoi('m', "mode", optarg, 8); 127 if (lfmode &~ 07777) 128 errexit("bad mode to -m: %o\n", lfmode); 129 printf("** lost+found creation mode %o\n", lfmode); 130 break; 131 132 case 'n': 133 nflag++; 134 yflag = 0; 135 break; 136 137 case 'p': 138 preen++; 139 break; 140 141 case 'P': 142 /* Progress meter not implemented. */ 143 break; 144 145 case 'q': /* Quiet not implemented */ 146 break; 147 148 case 'y': 149 yflag++; 150 nflag = 0; 151 break; 152 153 default: 154 usage(); 155 } 156 } 157 158 argc -= optind; 159 argv += optind; 160 161 if (!argc) 162 usage(); 163 164 if (signal(SIGINT, SIG_IGN) != SIG_IGN) 165 (void)signal(SIGINT, catch); 166 if (preen) 167 (void)signal(SIGQUIT, catchquit); 168 169 while (argc-- > 0) 170 (void)checkfilesys(blockcheck(*argv++), 0, 0L, 0); 171 172 if (returntosingle) 173 ret = 2; 174 175 exit(ret); 176 } 177 178 static int 179 argtoi(int flag, const char *req, const char *str, int base) 180 { 181 char *cp; 182 int ret; 183 184 ret = (int)strtol(str, &cp, base); 185 if (cp == str || *cp) 186 errexit("-%c flag requires a %s\n", flag, req); 187 return (ret); 188 } 189 190 /* 191 * Check the specified filesystem. 192 */ 193 /* ARGSUSED */ 194 static int 195 checkfilesys(const char *filesys, char *mntpt, long auxdata, int child) 196 { 197 daddr_t n_bfree; 198 struct dups *dp; 199 struct zlncnt *zlnp; 200 int i; 201 202 if (preen && child) 203 (void)signal(SIGQUIT, voidquit); 204 setcdevname(filesys, preen); 205 if (debug && preen) 206 pwarn("starting\n"); 207 switch (setup(filesys)) { 208 case 0: 209 if (preen) 210 pfatal("CAN'T CHECK FILE SYSTEM."); 211 case -1: 212 return (0); 213 } 214 /* 215 * 1: scan inodes tallying blocks used 216 */ 217 if (preen == 0) { 218 if (sblock.e2fs.e2fs_rev > E2FS_REV0) { 219 printf("** Last Mounted on %s\n", 220 sblock.e2fs.e2fs_fsmnt); 221 } 222 if (hotroot()) 223 printf("** Root file system\n"); 224 printf("** Phase 1 - Check Blocks and Sizes\n"); 225 } 226 pass1(); 227 228 /* 229 * 1b: locate first references to duplicates, if any 230 */ 231 if (duplist) { 232 if (preen) 233 pfatal("INTERNAL ERROR: dups with -p"); 234 printf("** Phase 1b - Rescan For More DUPS\n"); 235 pass1b(); 236 } 237 238 /* 239 * 2: traverse directories from root to mark all connected directories 240 */ 241 if (preen == 0) 242 printf("** Phase 2 - Check Pathnames\n"); 243 pass2(); 244 245 /* 246 * 3: scan inodes looking for disconnected directories 247 */ 248 if (preen == 0) 249 printf("** Phase 3 - Check Connectivity\n"); 250 pass3(); 251 252 /* 253 * 4: scan inodes looking for disconnected files; check reference counts 254 */ 255 if (preen == 0) 256 printf("** Phase 4 - Check Reference Counts\n"); 257 pass4(); 258 259 /* 260 * 5: check and repair resource counts in cylinder groups 261 */ 262 if (preen == 0) 263 printf("** Phase 5 - Check Cyl groups\n"); 264 pass5(); 265 266 /* 267 * print out summary statistics 268 */ 269 n_bfree = sblock.e2fs.e2fs_fbcount; 270 271 pwarn("%lld files, %lld used, %lld free\n", 272 (long long)n_files, (long long)n_blks, (long long)n_bfree); 273 if (debug && 274 /* 9 reserved and unused inodes in FS */ 275 (n_files -= maxino - 9 - sblock.e2fs.e2fs_ficount)) 276 printf("%lld files missing\n", (long long)n_files); 277 if (debug) { 278 for (i = 0; i < sblock.e2fs_ncg; i++) 279 n_blks += cgoverhead(i); 280 n_blks += sblock.e2fs.e2fs_first_dblock; 281 if (n_blks -= maxfsblock - n_bfree) 282 printf("%lld blocks missing\n", (long long)n_blks); 283 if (duplist != NULL) { 284 printf("The following duplicate blocks remain:"); 285 for (dp = duplist; dp; dp = dp->next) 286 printf(" %lld,", (long long)dp->dup); 287 printf("\n"); 288 } 289 if (zlnhead != NULL) { 290 printf("The following zero link count inodes remain:"); 291 for (zlnp = zlnhead; zlnp; zlnp = zlnp->next) 292 printf(" %llu,", 293 (unsigned long long)zlnp->zlncnt); 294 printf("\n"); 295 } 296 } 297 zlnhead = (struct zlncnt *)0; 298 duplist = (struct dups *)0; 299 muldup = (struct dups *)0; 300 inocleanup(); 301 if (fsmodified) { 302 time_t t; 303 (void)time(&t); 304 sblock.e2fs.e2fs_wtime = t; 305 sblock.e2fs.e2fs_lastfsck = t; 306 sbdirty(); 307 } 308 ckfini(1); 309 free(blockmap); 310 free(statemap); 311 free((char *)lncntp); 312 if (!fsmodified) 313 return (0); 314 if (!preen) 315 printf("\n***** FILE SYSTEM WAS MODIFIED *****\n"); 316 if (rerun) 317 printf("\n***** PLEASE RERUN FSCK *****\n"); 318 if (hotroot()) { 319 struct statvfs stfs_buf; 320 /* 321 * We modified the root. Do a mount update on 322 * it, unless it is read-write, so we can continue. 323 */ 324 if (statvfs("/", &stfs_buf) == 0) { 325 long flags = stfs_buf.f_flag; 326 struct ufs_args args; 327 int ret; 328 329 if (flags & MNT_RDONLY) { 330 args.fspec = 0; 331 flags |= MNT_UPDATE | MNT_RELOAD; 332 ret = mount(MOUNT_EXT2FS, "/", flags, 333 &args, sizeof args); 334 if (ret == 0) 335 return(0); 336 } 337 } 338 if (!preen) 339 printf("\n***** REBOOT NOW *****\n"); 340 sync(); 341 return (4); 342 } 343 return (0); 344 } 345 346 static void 347 usage(void) 348 { 349 350 (void) fprintf(stderr, 351 "usage: %s [-dfnpy] [-b block] [-c level] [-m mode] filesystem ...\n", 352 getprogname()); 353 exit(1); 354 } 355 356