1 /* $NetBSD: main.c,v 1.14 2003/03/29 00:09:43 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. 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/param.h> 37 #include <sys/time.h> 38 #include <sys/mount.h> 39 #include <ufs/ufs/dinode.h> 40 #include <sys/mount.h> 41 #include <ufs/ufs/ufsmount.h> 42 #include <ufs/lfs/lfs.h> 43 44 #include <fstab.h> 45 #include <stdarg.h> 46 #include <stdlib.h> 47 #include <string.h> 48 #include <ctype.h> 49 #include <stdio.h> 50 #include <unistd.h> 51 #include <err.h> 52 53 #include "fsck.h" 54 #include "extern.h" 55 #include "fsutil.h" 56 57 int returntosingle; 58 59 int main(int, char *[]); 60 61 static int argtoi(int, char *, char *, int); 62 static int checkfilesys(const char *, char *, long, int); 63 static void usage(void); 64 extern void (*panic_func)(int, const char *, va_list); 65 66 int 67 main(int argc, char **argv) 68 { 69 int ch; 70 int ret = 0; 71 char *optstring = "b:dfi:m:npy"; 72 73 sync(); 74 skipclean = 1; 75 exitonfail = 0; 76 idaddr = 0x0; 77 panic_func = vmsg; 78 while ((ch = getopt(argc, argv, optstring)) != -1) { 79 switch (ch) { 80 case 'b': 81 skipclean = 0; 82 bflag = argtoi('b', "number", optarg, 0); 83 printf("Alternate super block location: %d\n", bflag); 84 break; 85 case 'd': 86 debug++; 87 break; 88 case 'e': 89 exitonfail++; 90 break; 91 case 'f': 92 skipclean = 0; 93 break; 94 case 'i': 95 idaddr = strtol(optarg, NULL, 0); 96 break; 97 case 'm': 98 lfmode = argtoi('m', "mode", optarg, 8); 99 if (lfmode & ~07777) 100 err(1, "bad mode to -m: %o\n", lfmode); 101 printf("** lost+found creation mode %o\n", lfmode); 102 break; 103 104 case 'n': 105 nflag++; 106 yflag = 0; 107 break; 108 109 case 'p': 110 preen++; 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, char *req, 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 Segment Summaries and Inode Free List\n"); 191 } 192 if (idaddr) 193 pwarn("-i given, skipping free list check\n"); 194 else 195 pass0(); 196 197 if (preen == 0) { 198 /* 199 * 1: scan inodes tallying blocks used 200 */ 201 printf("** Phase 1 - Check Blocks and Sizes\n"); 202 pass1(); 203 204 /* 205 * 2: traverse directories from root to mark all connected directories 206 */ 207 printf("** Phase 2 - Check Pathnames\n"); 208 pass2(); 209 210 /* 211 * 3: scan inodes looking for disconnected directories 212 */ 213 printf("** Phase 3 - Check Connectivity\n"); 214 pass3(); 215 216 /* 217 * 4: scan inodes looking for disconnected files; check reference counts 218 */ 219 printf("** Phase 4 - Check Reference Counts\n"); 220 pass4(); 221 222 /* 223 * 5: check segment byte totals and dirty flags 224 */ 225 printf("** Phase 5 - Check Segment Block Accounting\n"); 226 pass5(); 227 228 if (debug) { 229 if (duplist != NULL) { 230 printf("The following duplicate blocks remain:"); 231 for (dp = duplist; dp; dp = dp->next) 232 printf(" %lld,", (long long) dp->dup); 233 printf("\n"); 234 } 235 if (zlnhead != NULL) { 236 printf("The following zero link count inodes remain:"); 237 for (zlnp = zlnhead; zlnp; zlnp = zlnp->next) 238 printf(" %u,", zlnp->zlncnt); 239 printf("\n"); 240 } 241 } 242 } 243 if (!rerun) { 244 if (!preen) 245 printf("** Phase 6 - Roll Forward\n"); 246 pass6(); 247 } 248 zlnhead = (struct zlncnt *) 0; 249 duplist = (struct dups *) 0; 250 muldup = (struct dups *) 0; 251 inocleanup(); 252 253 /* 254 * print out summary statistics 255 */ 256 pwarn("%d files, %lld used, %lld free\n", 257 n_files, (long long) n_blks, 258 (long long) fs->lfs_bfree); 259 260 ckfini(1); 261 262 free(blockmap); 263 free(statemap); 264 free((char *)lncntp); 265 if (!fsmodified) { 266 return (0); 267 } 268 if (!preen) 269 printf("\n***** FILE SYSTEM WAS MODIFIED *****\n"); 270 if (rerun) 271 printf("\n***** PLEASE RERUN FSCK *****\n"); 272 if (hotroot()) { 273 struct statfs stfs_buf; 274 /* 275 * We modified the root. Do a mount update on 276 * it, unless it is read-write, so we can continue. 277 */ 278 if (statfs("/", &stfs_buf) == 0) { 279 long flags = stfs_buf.f_flags; 280 struct ufs_args args; 281 int ret; 282 283 if (flags & MNT_RDONLY) { 284 args.fspec = 0; 285 args.export.ex_flags = 0; 286 args.export.ex_root = 0; 287 flags |= MNT_UPDATE | MNT_RELOAD; 288 ret = mount(MOUNT_LFS, "/", flags, &args); 289 if (ret == 0) 290 return (0); 291 } 292 } 293 if (!preen) 294 printf("\n***** REBOOT NOW *****\n"); 295 sync(); 296 return (4); 297 } 298 return (0); 299 } 300 301 static void 302 usage() 303 { 304 305 (void) fprintf(stderr, 306 "Usage: %s [-dnpy] [-b block] [-m mode] filesystem ...\n", 307 getprogname()); 308 exit(1); 309 } 310