1 /* $NetBSD: main.c,v 1.45 2013/06/08 02:16:03 dholland 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/lfs/lfs.h> 36 37 #include <fstab.h> 38 #include <stdarg.h> 39 #include <stdlib.h> 40 #include <string.h> 41 #include <ctype.h> 42 #include <stdio.h> 43 #include <unistd.h> 44 #include <err.h> 45 #include <util.h> 46 #include <signal.h> 47 48 #include "fsck.h" 49 #include "extern.h" 50 #include "fsutil.h" 51 #include "exitvalues.h" 52 53 volatile sig_atomic_t returntosingle = 0; 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 static void efun(int, const char *, ...); 59 extern void (*panic_func)(int, const char *, va_list); 60 61 static void 62 efun(int eval, const char *fmt, ...) 63 { 64 va_list ap; 65 va_start(ap, fmt); 66 verr(EEXIT, fmt, ap); 67 va_end(ap); 68 } 69 70 int 71 main(int argc, char **argv) 72 { 73 int ch; 74 int ret = FSCK_EXIT_OK; 75 const char *optstring = "b:dfi:m:npPqUy"; 76 77 ckfinish = ckfini; 78 skipclean = 1; 79 exitonfail = 0; 80 idaddr = 0x0; 81 panic_func = vmsg; 82 esetfunc(efun); 83 while ((ch = getopt(argc, argv, optstring)) != -1) { 84 switch (ch) { 85 case 'b': 86 skipclean = 0; 87 bflag = argtoi('b', "number", optarg, 0); 88 printf("Alternate super block location: %d\n", bflag); 89 break; 90 case 'd': 91 debug++; 92 break; 93 case 'e': 94 exitonfail++; 95 break; 96 case 'f': 97 skipclean = 0; 98 break; 99 case 'i': 100 idaddr = strtol(optarg, NULL, 0); 101 break; 102 case 'm': 103 lfmode = argtoi('m', "mode", optarg, 8); 104 if (lfmode & ~07777) 105 err(1, "bad mode to -m: %o\n", lfmode); 106 printf("** lost+found creation mode %o\n", lfmode); 107 break; 108 109 case 'n': 110 nflag++; 111 yflag = 0; 112 break; 113 114 case 'p': 115 preen++; 116 break; 117 118 case 'P': /* Progress meter not implemented. */ 119 break; 120 121 case 'q': 122 quiet++; 123 break; 124 #ifndef SMALL 125 case 'U': 126 Uflag++; 127 break; 128 #endif 129 case 'y': 130 yflag++; 131 nflag = 0; 132 break; 133 134 default: 135 usage(); 136 } 137 } 138 139 argc -= optind; 140 argv += optind; 141 142 if (!argc) 143 usage(); 144 145 if (signal(SIGINT, SIG_IGN) != SIG_IGN) 146 (void) signal(SIGINT, catch); 147 if (preen) 148 (void) signal(SIGQUIT, catchquit); 149 150 while (argc-- > 0) { 151 int nret = checkfilesys(blockcheck(*argv++), 0, 0L, 0); 152 if (ret < nret) 153 ret = nret; 154 } 155 156 return returntosingle ? FSCK_EXIT_UNRESOLVED : ret; 157 } 158 159 static int 160 argtoi(int flag, const char *req, const char *str, int base) 161 { 162 char *cp; 163 int ret; 164 165 ret = (int) strtol(str, &cp, base); 166 if (cp == str || *cp) 167 err(FSCK_EXIT_USAGE, "-%c flag requires a %s\n", flag, req); 168 return (ret); 169 } 170 171 /* 172 * Check the specified filesystem. 173 */ 174 175 /* ARGSUSED */ 176 static int 177 checkfilesys(const char *filesys, char *mntpt, long auxdata, int child) 178 { 179 struct dups *dp; 180 struct zlncnt *zlnp; 181 182 if (preen && child) 183 (void) signal(SIGQUIT, voidquit); 184 setcdevname(filesys, preen); 185 if (debug && preen) 186 pwarn("starting\n"); 187 switch (setup(filesys)) { 188 case 0: 189 if (preen) 190 pfatal("CAN'T CHECK FILE SYSTEM."); 191 case -1: 192 return FSCK_EXIT_OK; 193 } 194 195 /* 196 * For LFS, "preen" means "roll forward". We don't check anything 197 * else. 198 */ 199 if (preen == 0) { 200 printf("** Last Mounted on %s\n", fs->lfs_fsmnt); 201 if (hotroot()) 202 printf("** Root file system\n"); 203 /* 204 * 0: check segment checksums, inode ranges 205 */ 206 printf("** Phase 0 - Check Inode Free List\n"); 207 } 208 209 /* 210 * Check inode free list - we do this even if idaddr is set, 211 * since if we're writing we don't want to write a bad list. 212 */ 213 pass0(); 214 215 if (preen == 0) { 216 /* 217 * 1: scan inodes tallying blocks used 218 */ 219 printf("** Phase 1 - Check Blocks and Sizes\n"); 220 pass1(); 221 222 /* 223 * 2: traverse directories from root to mark all connected directories 224 */ 225 printf("** Phase 2 - Check Pathnames\n"); 226 pass2(); 227 228 /* 229 * 3: scan inodes looking for disconnected directories 230 */ 231 printf("** Phase 3 - Check Connectivity\n"); 232 pass3(); 233 234 /* 235 * 4: scan inodes looking for disconnected files; check reference counts 236 */ 237 printf("** Phase 4 - Check Reference Counts\n"); 238 pass4(); 239 } 240 241 /* 242 * 5: check segment byte totals and dirty flags, and cleanerinfo 243 */ 244 if (!preen) 245 printf("** Phase 5 - Check Segment Block Accounting\n"); 246 pass5(); 247 248 if (debug && !preen) { 249 if (duplist != NULL) { 250 printf("The following duplicate blocks remain:"); 251 for (dp = duplist; dp; dp = dp->next) 252 printf(" %lld,", (long long) dp->dup); 253 printf("\n"); 254 } 255 if (zlnhead != NULL) { 256 printf("The following zero link count inodes remain:"); 257 for (zlnp = zlnhead; zlnp; zlnp = zlnp->next) 258 printf(" %llu,", 259 (unsigned long long)zlnp->zlncnt); 260 printf("\n"); 261 } 262 } 263 264 if (!rerun) { 265 if (!preen) { 266 if (reply("ROLL FILESYSTEM FORWARD") == 1) { 267 printf("** Phase 6 - Roll Forward\n"); 268 pass6(); 269 } 270 } 271 else { 272 pass6(); 273 } 274 } 275 zlnhead = (struct zlncnt *) 0; 276 orphead = (struct zlncnt *) 0; 277 duplist = (struct dups *) 0; 278 muldup = (struct dups *) 0; 279 inocleanup(); 280 281 /* 282 * print out summary statistics 283 */ 284 pwarn("%llu files, %lld used, %lld free\n", 285 (unsigned long long)n_files, (long long) n_blks, 286 (long long) fs->lfs_bfree); 287 288 ckfini(1); 289 290 free(blockmap); 291 free(statemap); 292 free((char *)lncntp); 293 if (!fsmodified) { 294 return FSCK_EXIT_OK; 295 } 296 if (!preen) 297 printf("\n***** FILE SYSTEM WAS MODIFIED *****\n"); 298 if (rerun) 299 printf("\n***** PLEASE RERUN FSCK *****\n"); 300 if (hotroot()) { 301 struct statvfs stfs_buf; 302 /* 303 * We modified the root. Do a mount update on 304 * it, unless it is read-write, so we can continue. 305 */ 306 if (statvfs("/", &stfs_buf) == 0) { 307 long flags = stfs_buf.f_flag; 308 struct ulfs_args args; 309 310 if (flags & MNT_RDONLY) { 311 args.fspec = 0; 312 flags |= MNT_UPDATE | MNT_RELOAD; 313 if (mount(MOUNT_LFS, "/", flags, 314 &args, sizeof args) == 0) 315 return FSCK_EXIT_OK; 316 } 317 } 318 if (!preen) 319 printf("\n***** REBOOT NOW *****\n"); 320 sync(); 321 return FSCK_EXIT_ROOT_CHANGED; 322 } 323 return FSCK_EXIT_OK; 324 } 325 326 static void 327 usage(void) 328 { 329 330 (void) fprintf(stderr, 331 "Usage: %s [-dfpqU] [-b block] [-m mode] [-y | -n] filesystem ...\n", 332 getprogname()); 333 exit(FSCK_EXIT_USAGE); 334 } 335