1 /* $NetBSD: main.c,v 1.42 2010/01/07 01:39:56 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 #include <sys/param.h> 33 #include <sys/time.h> 34 #include <sys/mount.h> 35 #include <ufs/ufs/dinode.h> 36 #include <ufs/ufs/ufsmount.h> 37 #include <ufs/lfs/lfs.h> 38 39 #include <fstab.h> 40 #include <stdarg.h> 41 #include <stdlib.h> 42 #include <string.h> 43 #include <ctype.h> 44 #include <stdio.h> 45 #include <unistd.h> 46 #include <err.h> 47 #include <util.h> 48 #include <signal.h> 49 50 #include "fsck.h" 51 #include "extern.h" 52 #include "fsutil.h" 53 #include "exitvalues.h" 54 55 volatile sig_atomic_t returntosingle = 0; 56 57 static int argtoi(int, const char *, const char *, int); 58 static int checkfilesys(const char *, char *, long, int); 59 static void usage(void); 60 static void efun(int, const char *, ...); 61 extern void (*panic_func)(int, const char *, va_list); 62 63 static void 64 efun(int eval, const char *fmt, ...) 65 { 66 va_list ap; 67 va_start(ap, fmt); 68 verr(EEXIT, fmt, ap); 69 va_end(ap); 70 } 71 72 int 73 main(int argc, char **argv) 74 { 75 int ch; 76 int ret = FSCK_EXIT_OK; 77 const char *optstring = "b:dfi:m:npPqUy"; 78 79 skipclean = 1; 80 exitonfail = 0; 81 idaddr = 0x0; 82 panic_func = vmsg; 83 esetfunc(efun); 84 while ((ch = getopt(argc, argv, optstring)) != -1) { 85 switch (ch) { 86 case 'b': 87 skipclean = 0; 88 bflag = argtoi('b', "number", optarg, 0); 89 printf("Alternate super block location: %d\n", bflag); 90 break; 91 case 'd': 92 debug++; 93 break; 94 case 'e': 95 exitonfail++; 96 break; 97 case 'f': 98 skipclean = 0; 99 break; 100 case 'i': 101 idaddr = strtol(optarg, NULL, 0); 102 break; 103 case 'm': 104 lfmode = argtoi('m', "mode", optarg, 8); 105 if (lfmode & ~07777) 106 err(1, "bad mode to -m: %o\n", lfmode); 107 printf("** lost+found creation mode %o\n", lfmode); 108 break; 109 110 case 'n': 111 nflag++; 112 yflag = 0; 113 break; 114 115 case 'p': 116 preen++; 117 break; 118 119 case 'P': /* Progress meter not implemented. */ 120 break; 121 122 case 'q': 123 quiet++; 124 break; 125 #ifndef SMALL 126 case 'U': 127 Uflag++; 128 break; 129 #endif 130 case 'y': 131 yflag++; 132 nflag = 0; 133 break; 134 135 default: 136 usage(); 137 } 138 } 139 140 argc -= optind; 141 argv += optind; 142 143 if (!argc) 144 usage(); 145 146 if (signal(SIGINT, SIG_IGN) != SIG_IGN) 147 (void) signal(SIGINT, catch); 148 if (preen) 149 (void) signal(SIGQUIT, catchquit); 150 151 while (argc-- > 0) { 152 int nret = checkfilesys(blockcheck(*argv++), 0, 0L, 0); 153 if (ret < nret) 154 ret = nret; 155 } 156 157 return returntosingle ? FSCK_EXIT_UNRESOLVED : ret; 158 } 159 160 static int 161 argtoi(int flag, const char *req, const char *str, int base) 162 { 163 char *cp; 164 int ret; 165 166 ret = (int) strtol(str, &cp, base); 167 if (cp == str || *cp) 168 err(FSCK_EXIT_USAGE, "-%c flag requires a %s\n", flag, req); 169 return (ret); 170 } 171 172 /* 173 * Check the specified filesystem. 174 */ 175 176 /* ARGSUSED */ 177 static int 178 checkfilesys(const char *filesys, char *mntpt, long auxdata, int child) 179 { 180 struct dups *dp; 181 struct zlncnt *zlnp; 182 183 if (preen && child) 184 (void) signal(SIGQUIT, voidquit); 185 setcdevname(filesys, preen); 186 if (debug && preen) 187 pwarn("starting\n"); 188 switch (setup(filesys)) { 189 case 0: 190 if (preen) 191 pfatal("CAN'T CHECK FILE SYSTEM."); 192 case -1: 193 return FSCK_EXIT_OK; 194 } 195 196 /* 197 * For LFS, "preen" means "roll forward". We don't check anything 198 * else. 199 */ 200 if (preen == 0) { 201 printf("** Last Mounted on %s\n", fs->lfs_fsmnt); 202 if (hotroot()) 203 printf("** Root file system\n"); 204 /* 205 * 0: check segment checksums, inode ranges 206 */ 207 printf("** Phase 0 - Check Inode Free List\n"); 208 } 209 210 /* 211 * Check inode free list - we do this even if idaddr is set, 212 * since if we're writing we don't want to write a bad list. 213 */ 214 pass0(); 215 216 if (preen == 0) { 217 /* 218 * 1: scan inodes tallying blocks used 219 */ 220 printf("** Phase 1 - Check Blocks and Sizes\n"); 221 pass1(); 222 223 /* 224 * 2: traverse directories from root to mark all connected directories 225 */ 226 printf("** Phase 2 - Check Pathnames\n"); 227 pass2(); 228 229 /* 230 * 3: scan inodes looking for disconnected directories 231 */ 232 printf("** Phase 3 - Check Connectivity\n"); 233 pass3(); 234 235 /* 236 * 4: scan inodes looking for disconnected files; check reference counts 237 */ 238 printf("** Phase 4 - Check Reference Counts\n"); 239 pass4(); 240 } 241 242 /* 243 * 5: check segment byte totals and dirty flags, and cleanerinfo 244 */ 245 if (!preen) 246 printf("** Phase 5 - Check Segment Block Accounting\n"); 247 pass5(); 248 249 if (debug && !preen) { 250 if (duplist != NULL) { 251 printf("The following duplicate blocks remain:"); 252 for (dp = duplist; dp; dp = dp->next) 253 printf(" %lld,", (long long) dp->dup); 254 printf("\n"); 255 } 256 if (zlnhead != NULL) { 257 printf("The following zero link count inodes remain:"); 258 for (zlnp = zlnhead; zlnp; zlnp = zlnp->next) 259 printf(" %llu,", 260 (unsigned long long)zlnp->zlncnt); 261 printf("\n"); 262 } 263 } 264 265 if (!rerun) { 266 if (!preen) { 267 if (reply("ROLL FILESYSTEM FORWARD") == 1) { 268 printf("** Phase 6 - Roll Forward\n"); 269 pass6(); 270 } 271 } 272 else { 273 pass6(); 274 } 275 } 276 zlnhead = (struct zlncnt *) 0; 277 orphead = (struct zlncnt *) 0; 278 duplist = (struct dups *) 0; 279 muldup = (struct dups *) 0; 280 inocleanup(); 281 282 /* 283 * print out summary statistics 284 */ 285 pwarn("%llu files, %lld used, %lld free\n", 286 (unsigned long long)n_files, (long long) n_blks, 287 (long long) fs->lfs_bfree); 288 289 ckfini(1); 290 291 free(blockmap); 292 free(statemap); 293 free((char *)lncntp); 294 if (!fsmodified) { 295 return FSCK_EXIT_OK; 296 } 297 if (!preen) 298 printf("\n***** FILE SYSTEM WAS MODIFIED *****\n"); 299 if (rerun) 300 printf("\n***** PLEASE RERUN FSCK *****\n"); 301 if (hotroot()) { 302 struct statvfs stfs_buf; 303 /* 304 * We modified the root. Do a mount update on 305 * it, unless it is read-write, so we can continue. 306 */ 307 if (statvfs("/", &stfs_buf) == 0) { 308 long flags = stfs_buf.f_flag; 309 struct ufs_args args; 310 311 if (flags & MNT_RDONLY) { 312 args.fspec = 0; 313 flags |= MNT_UPDATE | MNT_RELOAD; 314 if (mount(MOUNT_LFS, "/", flags, 315 &args, sizeof args) == 0) 316 return FSCK_EXIT_OK; 317 } 318 } 319 if (!preen) 320 printf("\n***** REBOOT NOW *****\n"); 321 sync(); 322 return FSCK_EXIT_ROOT_CHANGED; 323 } 324 return FSCK_EXIT_OK; 325 } 326 327 static void 328 usage(void) 329 { 330 331 (void) fprintf(stderr, 332 "Usage: %s [-dfpqU] [-b block] [-m mode] [-y | -n] filesystem ...\n", 333 getprogname()); 334 exit(FSCK_EXIT_USAGE); 335 } 336