1 /* $NetBSD: main.c,v 1.30 2006/09/01 19:52:48 perseant 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/param.h> 33 #include <sys/time.h> 34 #include <sys/mount.h> 35 #include <ufs/ufs/dinode.h> 36 #include <sys/mount.h> 37 #include <ufs/ufs/ufsmount.h> 38 #include <ufs/lfs/lfs.h> 39 40 #include <fstab.h> 41 #include <stdarg.h> 42 #include <stdlib.h> 43 #include <string.h> 44 #include <ctype.h> 45 #include <stdio.h> 46 #include <unistd.h> 47 #include <err.h> 48 49 #include "fsck.h" 50 #include "extern.h" 51 #include "fsutil.h" 52 53 int returntosingle; 54 55 static int argtoi(int, const char *, const char *, int); 56 static int checkfilesys(const char *, char *, long, int); 57 static void usage(void); 58 extern void (*panic_func)(int, const char *, va_list); 59 60 int 61 main(int argc, char **argv) 62 { 63 int ch; 64 int ret = 0; 65 const char *optstring = "b:dfi:m:npPqy"; 66 67 skipclean = 1; 68 exitonfail = 0; 69 idaddr = 0x0; 70 panic_func = vmsg; 71 while ((ch = getopt(argc, argv, optstring)) != -1) { 72 switch (ch) { 73 case 'b': 74 skipclean = 0; 75 bflag = argtoi('b', "number", optarg, 0); 76 printf("Alternate super block location: %d\n", bflag); 77 break; 78 case 'd': 79 debug++; 80 break; 81 case 'e': 82 exitonfail++; 83 break; 84 case 'f': 85 skipclean = 0; 86 break; 87 case 'i': 88 idaddr = strtol(optarg, NULL, 0); 89 break; 90 case 'm': 91 lfmode = argtoi('m', "mode", optarg, 8); 92 if (lfmode & ~07777) 93 err(1, "bad mode to -m: %o\n", lfmode); 94 printf("** lost+found creation mode %o\n", lfmode); 95 break; 96 97 case 'n': 98 nflag++; 99 yflag = 0; 100 break; 101 102 case 'p': 103 preen++; 104 break; 105 106 case 'P': /* Progress meter not implemented. */ 107 break; 108 109 case 'q': 110 quiet++; 111 break; 112 113 case 'y': 114 yflag++; 115 nflag = 0; 116 break; 117 118 default: 119 usage(); 120 } 121 } 122 123 argc -= optind; 124 argv += optind; 125 126 if (!argc) 127 usage(); 128 129 if (signal(SIGINT, SIG_IGN) != SIG_IGN) 130 (void) signal(SIGINT, catch); 131 if (preen) 132 (void) signal(SIGQUIT, catchquit); 133 134 while (argc-- > 0) 135 (void) checkfilesys(blockcheck(*argv++), 0, 0L, 0); 136 137 if (returntosingle) 138 ret = 2; 139 140 exit(ret); 141 } 142 143 static int 144 argtoi(int flag, const char *req, const char *str, int base) 145 { 146 char *cp; 147 int ret; 148 149 ret = (int) strtol(str, &cp, base); 150 if (cp == str || *cp) 151 err(1, "-%c flag requires a %s\n", flag, req); 152 return (ret); 153 } 154 155 /* 156 * Check the specified filesystem. 157 */ 158 159 /* ARGSUSED */ 160 static int 161 checkfilesys(const char *filesys, char *mntpt, long auxdata, int child) 162 { 163 struct dups *dp; 164 struct zlncnt *zlnp; 165 166 if (preen && child) 167 (void) signal(SIGQUIT, voidquit); 168 setcdevname(filesys, preen); 169 if (debug && preen) 170 pwarn("starting\n"); 171 switch (setup(filesys)) { 172 case 0: 173 if (preen) 174 pfatal("CAN'T CHECK FILE SYSTEM."); 175 case -1: 176 return (0); 177 } 178 179 /* 180 * For LFS, "preen" means "roll forward". We don't check anything 181 * else. 182 */ 183 if (preen == 0) { 184 printf("** Last Mounted on %s\n", fs->lfs_fsmnt); 185 if (hotroot()) 186 printf("** Root file system\n"); 187 /* 188 * 0: check segment checksums, inode ranges 189 */ 190 printf("** Phase 0 - Check Inode Free List\n"); 191 } 192 193 /* 194 * Check inode free list - we do this even if idaddr is set, 195 * since if we're writing we don't want to write a bad list. 196 */ 197 pass0(); 198 199 if (preen == 0) { 200 /* 201 * 1: scan inodes tallying blocks used 202 */ 203 printf("** Phase 1 - Check Blocks and Sizes\n"); 204 pass1(); 205 206 /* 207 * 2: traverse directories from root to mark all connected directories 208 */ 209 printf("** Phase 2 - Check Pathnames\n"); 210 pass2(); 211 212 /* 213 * 3: scan inodes looking for disconnected directories 214 */ 215 printf("** Phase 3 - Check Connectivity\n"); 216 pass3(); 217 218 /* 219 * 4: scan inodes looking for disconnected files; check reference counts 220 */ 221 printf("** Phase 4 - Check Reference Counts\n"); 222 pass4(); 223 } 224 225 /* 226 * 5: check segment byte totals and dirty flags, and cleanerinfo 227 */ 228 if (!preen) 229 printf("** Phase 5 - Check Segment Block Accounting\n"); 230 pass5(); 231 232 if (debug && !preen) { 233 if (duplist != NULL) { 234 printf("The following duplicate blocks remain:"); 235 for (dp = duplist; dp; dp = dp->next) 236 printf(" %lld,", (long long) dp->dup); 237 printf("\n"); 238 } 239 if (zlnhead != NULL) { 240 printf("The following zero link count inodes remain:"); 241 for (zlnp = zlnhead; zlnp; zlnp = zlnp->next) 242 printf(" %llu,", 243 (unsigned long long)zlnp->zlncnt); 244 printf("\n"); 245 } 246 } 247 248 if (!rerun) { 249 if (!preen) 250 printf("** Phase 6 - Roll Forward\n"); 251 pass6(); 252 } 253 zlnhead = (struct zlncnt *) 0; 254 orphead = (struct zlncnt *) 0; 255 duplist = (struct dups *) 0; 256 muldup = (struct dups *) 0; 257 inocleanup(); 258 259 /* 260 * print out summary statistics 261 */ 262 pwarn("%llu files, %lld used, %lld free\n", 263 (unsigned long long)n_files, (long long) n_blks, 264 (long long) fs->lfs_bfree); 265 266 ckfini(1); 267 268 free(blockmap); 269 free(statemap); 270 free((char *)lncntp); 271 if (!fsmodified) { 272 return (0); 273 } 274 if (!preen) 275 printf("\n***** FILE SYSTEM WAS MODIFIED *****\n"); 276 if (rerun) 277 printf("\n***** PLEASE RERUN FSCK *****\n"); 278 if (hotroot()) { 279 struct statvfs stfs_buf; 280 /* 281 * We modified the root. Do a mount update on 282 * it, unless it is read-write, so we can continue. 283 */ 284 if (statvfs("/", &stfs_buf) == 0) { 285 long flags = stfs_buf.f_flag; 286 struct ufs_args args; 287 int ret; 288 289 if (flags & MNT_RDONLY) { 290 args.fspec = 0; 291 flags |= MNT_UPDATE | MNT_RELOAD; 292 ret = mount(MOUNT_LFS, "/", flags, &args); 293 if (ret == 0) 294 return (0); 295 } 296 } 297 if (!preen) 298 printf("\n***** REBOOT NOW *****\n"); 299 sync(); 300 return (4); 301 } 302 return (0); 303 } 304 305 static void 306 usage(void) 307 { 308 309 (void) fprintf(stderr, 310 "usage: %s [-dfpq] [-b block] [-m mode] [-y | -n] filesystem ...\n", 311 getprogname()); 312 exit(1); 313 } 314