1 /* $NetBSD: main.c,v 1.21 2005/06/26 23:01:39 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 /* 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 1.21 2005/06/26 23:01:39 christos 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:npqy")) != -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 case 'y': 148 yflag++; 149 nflag = 0; 150 break; 151 152 default: 153 usage(); 154 } 155 } 156 157 argc -= optind; 158 argv += optind; 159 160 if (!argc) 161 usage(); 162 163 if (signal(SIGINT, SIG_IGN) != SIG_IGN) 164 (void)signal(SIGINT, catch); 165 if (preen) 166 (void)signal(SIGQUIT, catchquit); 167 168 while (argc-- > 0) 169 (void)checkfilesys(blockcheck(*argv++), 0, 0L, 0); 170 171 if (returntosingle) 172 ret = 2; 173 174 exit(ret); 175 } 176 177 static int 178 argtoi(int flag, const char *req, const char *str, int base) 179 { 180 char *cp; 181 int ret; 182 183 ret = (int)strtol(str, &cp, base); 184 if (cp == str || *cp) 185 errexit("-%c flag requires a %s\n", flag, req); 186 return (ret); 187 } 188 189 /* 190 * Check the specified filesystem. 191 */ 192 /* ARGSUSED */ 193 static int 194 checkfilesys(const char *filesys, char *mntpt, long auxdata, int child) 195 { 196 daddr_t n_bfree; 197 struct dups *dp; 198 struct zlncnt *zlnp; 199 int i; 200 201 if (preen && child) 202 (void)signal(SIGQUIT, voidquit); 203 setcdevname(filesys, preen); 204 if (debug && preen) 205 pwarn("starting\n"); 206 switch (setup(filesys)) { 207 case 0: 208 if (preen) 209 pfatal("CAN'T CHECK FILE SYSTEM."); 210 case -1: 211 return (0); 212 } 213 /* 214 * 1: scan inodes tallying blocks used 215 */ 216 if (preen == 0) { 217 if (sblock.e2fs.e2fs_rev > E2FS_REV0) { 218 printf("** Last Mounted on %s\n", 219 sblock.e2fs.e2fs_fsmnt); 220 } 221 if (hotroot()) 222 printf("** Root file system\n"); 223 printf("** Phase 1 - Check Blocks and Sizes\n"); 224 } 225 pass1(); 226 227 /* 228 * 1b: locate first references to duplicates, if any 229 */ 230 if (duplist) { 231 if (preen) 232 pfatal("INTERNAL ERROR: dups with -p"); 233 printf("** Phase 1b - Rescan For More DUPS\n"); 234 pass1b(); 235 } 236 237 /* 238 * 2: traverse directories from root to mark all connected directories 239 */ 240 if (preen == 0) 241 printf("** Phase 2 - Check Pathnames\n"); 242 pass2(); 243 244 /* 245 * 3: scan inodes looking for disconnected directories 246 */ 247 if (preen == 0) 248 printf("** Phase 3 - Check Connectivity\n"); 249 pass3(); 250 251 /* 252 * 4: scan inodes looking for disconnected files; check reference counts 253 */ 254 if (preen == 0) 255 printf("** Phase 4 - Check Reference Counts\n"); 256 pass4(); 257 258 /* 259 * 5: check and repair resource counts in cylinder groups 260 */ 261 if (preen == 0) 262 printf("** Phase 5 - Check Cyl groups\n"); 263 pass5(); 264 265 /* 266 * print out summary statistics 267 */ 268 n_bfree = sblock.e2fs.e2fs_fbcount; 269 270 pwarn("%lld files, %lld used, %lld free\n", 271 (long long)n_files, (long long)n_blks, (long long)n_bfree); 272 if (debug && 273 /* 9 reserved and unused inodes in FS */ 274 (n_files -= maxino - 9 - sblock.e2fs.e2fs_ficount)) 275 printf("%lld files missing\n", (long long)n_files); 276 if (debug) { 277 for (i = 0; i < sblock.e2fs_ncg; i++) 278 n_blks += cgoverhead(i); 279 n_blks += sblock.e2fs.e2fs_first_dblock; 280 if (n_blks -= maxfsblock - n_bfree) 281 printf("%lld blocks missing\n", (long long)n_blks); 282 if (duplist != NULL) { 283 printf("The following duplicate blocks remain:"); 284 for (dp = duplist; dp; dp = dp->next) 285 printf(" %lld,", (long long)dp->dup); 286 printf("\n"); 287 } 288 if (zlnhead != NULL) { 289 printf("The following zero link count inodes remain:"); 290 for (zlnp = zlnhead; zlnp; zlnp = zlnp->next) 291 printf(" %u,", zlnp->zlncnt); 292 printf("\n"); 293 } 294 } 295 zlnhead = (struct zlncnt *)0; 296 duplist = (struct dups *)0; 297 muldup = (struct dups *)0; 298 inocleanup(); 299 if (fsmodified) { 300 time_t t; 301 (void)time(&t); 302 sblock.e2fs.e2fs_wtime = t; 303 sblock.e2fs.e2fs_lastfsck = t; 304 sbdirty(); 305 } 306 ckfini(1); 307 free(blockmap); 308 free(statemap); 309 free((char *)lncntp); 310 if (!fsmodified) 311 return (0); 312 if (!preen) 313 printf("\n***** FILE SYSTEM WAS MODIFIED *****\n"); 314 if (rerun) 315 printf("\n***** PLEASE RERUN FSCK *****\n"); 316 if (hotroot()) { 317 struct statvfs stfs_buf; 318 /* 319 * We modified the root. Do a mount update on 320 * it, unless it is read-write, so we can continue. 321 */ 322 if (statvfs("/", &stfs_buf) == 0) { 323 long flags = stfs_buf.f_flag; 324 struct ufs_args args; 325 int ret; 326 327 if (flags & MNT_RDONLY) { 328 args.fspec = 0; 329 args.export.ex_flags = 0; 330 args.export.ex_root = 0; 331 flags |= MNT_UPDATE | MNT_RELOAD; 332 ret = mount(MOUNT_EXT2FS, "/", flags, &args); 333 if (ret == 0) 334 return(0); 335 } 336 } 337 if (!preen) 338 printf("\n***** REBOOT NOW *****\n"); 339 sync(); 340 return (4); 341 } 342 return (0); 343 } 344 345 static void 346 usage(void) 347 { 348 349 (void) fprintf(stderr, 350 "usage: %s [-dfnpy] [-b block] [-c level] [-m mode] filesystem ...\n", 351 getprogname()); 352 exit(1); 353 } 354 355