1 /* $NetBSD: main.c,v 1.36 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 /* 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 * 44 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 45 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 46 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 47 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 48 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 49 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 50 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 51 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 52 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 53 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 54 */ 55 56 #include <sys/cdefs.h> 57 #ifndef lint 58 __COPYRIGHT("@(#) Copyright (c) 1980, 1986, 1993\ 59 The Regents of the University of California. All rights reserved."); 60 #endif /* not lint */ 61 62 #ifndef lint 63 #if 0 64 static char sccsid[] = "@(#)main.c 8.2 (Berkeley) 1/23/94"; 65 #else 66 __RCSID("$NetBSD: main.c,v 1.36 2010/01/07 01:39:56 christos Exp $"); 67 #endif 68 #endif /* not lint */ 69 70 #include <sys/param.h> 71 #include <sys/time.h> 72 #include <sys/mount.h> 73 #include <ufs/ufs/ufsmount.h> 74 #include <ufs/ext2fs/ext2fs_dinode.h> 75 #include <ufs/ext2fs/ext2fs.h> 76 #include <fstab.h> 77 #include <stdlib.h> 78 #include <string.h> 79 #include <ctype.h> 80 #include <stdio.h> 81 #include <time.h> 82 #include <unistd.h> 83 #include <signal.h> 84 85 #include "fsck.h" 86 #include "extern.h" 87 #include "fsutil.h" 88 #include "exitvalues.h" 89 90 volatile sig_atomic_t returntosingle = 0; 91 92 93 static int argtoi(int, const char *, const char *, int); 94 static int checkfilesys(const char *, char *, long, int); 95 static void usage(void) __dead; 96 97 int 98 main(int argc, char *argv[]) 99 { 100 int ch; 101 int ret = FSCK_EXIT_OK; 102 103 sync(); 104 skipclean = 1; 105 while ((ch = getopt(argc, argv, "b:dfm:npPqUy")) != -1) { 106 switch (ch) { 107 case 'b': 108 skipclean = 0; 109 bflag = argtoi('b', "number", optarg, 10); 110 printf("Alternate super block location: %d\n", bflag); 111 break; 112 113 case 'd': 114 debug++; 115 break; 116 117 case 'f': 118 skipclean = 0; 119 break; 120 121 case 'm': 122 lfmode = argtoi('m', "mode", optarg, 8); 123 if (lfmode &~ 07777) 124 errexit("bad mode to -m: %o", lfmode); 125 printf("** lost+found creation mode %o\n", lfmode); 126 break; 127 128 case 'n': 129 nflag++; 130 yflag = 0; 131 break; 132 133 case 'p': 134 preen++; 135 break; 136 137 case 'P': 138 /* Progress meter not implemented. */ 139 break; 140 141 case 'q': /* Quiet not implemented */ 142 break; 143 144 #ifndef SMALL 145 case 'U': 146 Uflag++; 147 break; 148 #endif 149 150 case 'y': 151 yflag++; 152 nflag = 0; 153 break; 154 155 default: 156 usage(); 157 } 158 } 159 160 argc -= optind; 161 argv += optind; 162 163 if (!argc) 164 usage(); 165 166 if (signal(SIGINT, SIG_IGN) != SIG_IGN) 167 (void)signal(SIGINT, catch); 168 if (preen) 169 (void)signal(SIGQUIT, catchquit); 170 171 while (argc-- > 0) { 172 int nret = checkfilesys(blockcheck(*argv++), 0, 0L, 0); 173 if (ret < nret) 174 ret = nret; 175 } 176 177 return returntosingle ? FSCK_EXIT_UNRESOLVED : ret; 178 } 179 180 static int 181 argtoi(int flag, const char *req, const char *str, int base) 182 { 183 char *cp; 184 int ret; 185 186 ret = (int)strtol(str, &cp, base); 187 if (cp == str || *cp) 188 errexit("-%c flag requires a %s", flag, req); 189 return (ret); 190 } 191 192 /* 193 * Check the specified filesystem. 194 */ 195 /* ARGSUSED */ 196 static int 197 checkfilesys(const char *filesys, char *mntpt, long auxdata, int child) 198 { 199 daddr_t n_bfree; 200 struct dups *dp; 201 struct zlncnt *zlnp; 202 int i; 203 204 if (preen && child) 205 (void)signal(SIGQUIT, voidquit); 206 setcdevname(filesys, preen); 207 if (debug && preen) 208 pwarn("starting\n"); 209 switch (setup(filesys)) { 210 case 0: 211 if (preen) 212 pfatal("CAN'T CHECK FILE SYSTEM."); 213 case -1: 214 return FSCK_EXIT_OK; 215 } 216 /* 217 * 1: scan inodes tallying blocks used 218 */ 219 if (preen == 0) { 220 if (sblock.e2fs.e2fs_rev > E2FS_REV0) { 221 printf("** Last Mounted on %s\n", 222 sblock.e2fs.e2fs_fsmnt); 223 } 224 if (hotroot()) 225 printf("** Root file system\n"); 226 printf("** Phase 1 - Check Blocks and Sizes\n"); 227 } 228 pass1(); 229 230 /* 231 * 1b: locate first references to duplicates, if any 232 */ 233 if (duplist) { 234 if (preen) 235 pfatal("INTERNAL ERROR: dups with -p"); 236 printf("** Phase 1b - Rescan For More DUPS\n"); 237 pass1b(); 238 } 239 240 /* 241 * 2: traverse directories from root to mark all connected directories 242 */ 243 if (preen == 0) 244 printf("** Phase 2 - Check Pathnames\n"); 245 pass2(); 246 247 /* 248 * 3: scan inodes looking for disconnected directories 249 */ 250 if (preen == 0) 251 printf("** Phase 3 - Check Connectivity\n"); 252 pass3(); 253 254 /* 255 * 4: scan inodes looking for disconnected files; check reference counts 256 */ 257 if (preen == 0) 258 printf("** Phase 4 - Check Reference Counts\n"); 259 pass4(); 260 261 /* 262 * 5: check and repair resource counts in cylinder groups 263 */ 264 if (preen == 0) 265 printf("** Phase 5 - Check Cyl groups\n"); 266 pass5(); 267 268 /* 269 * print out summary statistics 270 */ 271 n_bfree = sblock.e2fs.e2fs_fbcount; 272 273 pwarn("%lld files, %lld used, %lld free\n", 274 (long long)n_files, (long long)n_blks, (long long)n_bfree); 275 if (debug && 276 /* 9 reserved and unused inodes in FS */ 277 (n_files -= maxino - 9 - sblock.e2fs.e2fs_ficount)) 278 printf("%lld files missing\n", (long long)n_files); 279 if (debug) { 280 for (i = 0; i < sblock.e2fs_ncg; i++) 281 n_blks += cgoverhead(i); 282 n_blks += sblock.e2fs.e2fs_first_dblock; 283 if (n_blks -= maxfsblock - n_bfree) 284 printf("%lld blocks missing\n", (long long)n_blks); 285 if (duplist != NULL) { 286 printf("The following duplicate blocks remain:"); 287 for (dp = duplist; dp; dp = dp->next) 288 printf(" %lld,", (long long)dp->dup); 289 printf("\n"); 290 } 291 if (zlnhead != NULL) { 292 printf("The following zero link count inodes remain:"); 293 for (zlnp = zlnhead; zlnp; zlnp = zlnp->next) 294 printf(" %llu,", 295 (unsigned long long)zlnp->zlncnt); 296 printf("\n"); 297 } 298 } 299 zlnhead = (struct zlncnt *)0; 300 duplist = (struct dups *)0; 301 muldup = (struct dups *)0; 302 inocleanup(); 303 if (fsmodified) { 304 time_t t; 305 (void)time(&t); 306 sblock.e2fs.e2fs_wtime = t; 307 sblock.e2fs.e2fs_lastfsck = t; 308 sbdirty(); 309 } 310 ckfini(1); 311 free(blockmap); 312 free(statemap); 313 free((char *)lncntp); 314 if (!fsmodified) 315 return FSCK_EXIT_OK; 316 if (!preen) 317 printf("\n***** FILE SYSTEM WAS MODIFIED *****\n"); 318 if (rerun) 319 printf("\n***** PLEASE RERUN FSCK *****\n"); 320 if (hotroot()) { 321 struct statvfs stfs_buf; 322 /* 323 * We modified the root. Do a mount update on 324 * it, unless it is read-write, so we can continue. 325 */ 326 if (statvfs("/", &stfs_buf) == 0) { 327 long flags = stfs_buf.f_flag; 328 struct ufs_args args; 329 330 if (flags & MNT_RDONLY) { 331 args.fspec = 0; 332 flags |= MNT_UPDATE | MNT_RELOAD; 333 if (mount(MOUNT_EXT2FS, "/", flags, 334 &args, sizeof args) == 0) 335 return FSCK_EXIT_OK; 336 } 337 } 338 if (!preen) 339 printf("\n***** REBOOT NOW *****\n"); 340 sync(); 341 return FSCK_EXIT_ROOT_CHANGED; 342 } 343 return FSCK_EXIT_OK; 344 } 345 346 static void 347 usage(void) 348 { 349 350 (void) fprintf(stderr, 351 "usage: %s [-dfnpUy] [-b block] [-c level] [-m mode] filesystem ...\n", 352 getprogname()); 353 exit(FSCK_EXIT_USAGE); 354 } 355 356