main.c revision 1.14
1 /* $NetBSD: main.c,v 1.14 2003/10/20 12:04:38 dsl 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 * 3. All advertising materials mentioning features or use of this software 44 * must display the following acknowledgement: 45 * This product includes software developed by Manuel Bouyer. 46 * 4. The name of the author may not be used to endorse or promote products 47 * derived from this software without specific prior written permission. 48 * 49 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 50 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 51 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 52 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 53 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 54 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 55 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 56 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 57 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 58 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 59 * SUCH DAMAGE. 60 */ 61 62 #include <sys/cdefs.h> 63 #ifndef lint 64 __COPYRIGHT("@(#) Copyright (c) 1980, 1986, 1993\n\ 65 The Regents of the University of California. All rights reserved.\n"); 66 #endif /* not lint */ 67 68 #ifndef lint 69 #if 0 70 static char sccsid[] = "@(#)main.c 8.2 (Berkeley) 1/23/94"; 71 #else 72 __RCSID("$NetBSD: main.c,v 1.14 2003/10/20 12:04:38 dsl Exp $"); 73 #endif 74 #endif /* not lint */ 75 76 #include <sys/param.h> 77 #include <sys/time.h> 78 #include <sys/mount.h> 79 #include <ufs/ufs/ufsmount.h> 80 #include <ufs/ext2fs/ext2fs_dinode.h> 81 #include <ufs/ext2fs/ext2fs.h> 82 #include <fstab.h> 83 #include <stdlib.h> 84 #include <string.h> 85 #include <ctype.h> 86 #include <stdio.h> 87 #include <time.h> 88 #include <unistd.h> 89 90 #include "fsck.h" 91 #include "extern.h" 92 #include "fsutil.h" 93 94 int returntosingle; 95 96 int main __P((int, char *[])); 97 98 static int argtoi __P((int, char *, char *, int)); 99 static int checkfilesys __P((const char *, char *, long, int)); 100 static void usage __P((void)); 101 102 int 103 main(argc, argv) 104 int argc; 105 char *argv[]; 106 { 107 int ch; 108 int ret = 0; 109 110 sync(); 111 skipclean = 1; 112 while ((ch = getopt(argc, argv, "b:c:dfm:npqy")) != -1) { 113 switch (ch) { 114 case 'b': 115 skipclean = 0; 116 bflag = argtoi('b', "number", optarg, 10); 117 printf("Alternate super block location: %d\n", bflag); 118 break; 119 120 case 'd': 121 debug++; 122 break; 123 124 case 'f': 125 skipclean = 0; 126 break; 127 128 case 'm': 129 lfmode = argtoi('m', "mode", optarg, 8); 130 if (lfmode &~ 07777) 131 errexit("bad mode to -m: %o\n", lfmode); 132 printf("** lost+found creation mode %o\n", lfmode); 133 break; 134 135 case 'n': 136 nflag++; 137 yflag = 0; 138 break; 139 140 case 'p': 141 preen++; 142 break; 143 144 case 'q': /* Quiet not implemented */ 145 break; 146 147 case 'y': 148 yflag++; 149 nflag = 0; 150 break; 151 152 default: 153 usage(); 154 } 155 } 156 157 argc -= optind; 158 argv += optind; 159 160 if (!argc) 161 usage(); 162 163 if (signal(SIGINT, SIG_IGN) != SIG_IGN) 164 (void)signal(SIGINT, catch); 165 if (preen) 166 (void)signal(SIGQUIT, catchquit); 167 168 while (argc-- > 0) 169 (void)checkfilesys(blockcheck(*argv++), 0, 0L, 0); 170 171 if (returntosingle) 172 ret = 2; 173 174 exit(ret); 175 } 176 177 static int 178 argtoi(flag, req, str, base) 179 int flag; 180 char *req, *str; 181 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\n", flag, req); 189 return (ret); 190 } 191 192 /* 193 * Check the specified filesystem. 194 */ 195 /* ARGSUSED */ 196 static int 197 checkfilesys(filesys, mntpt, auxdata, child) 198 const char *filesys; 199 char *mntpt; 200 long auxdata; 201 int child; 202 { 203 daddr_t n_bfree; 204 struct dups *dp; 205 struct zlncnt *zlnp; 206 int i; 207 208 if (preen && child) 209 (void)signal(SIGQUIT, voidquit); 210 setcdevname(filesys, preen); 211 if (debug && preen) 212 pwarn("starting\n"); 213 switch (setup(filesys)) { 214 case 0: 215 if (preen) 216 pfatal("CAN'T CHECK FILE SYSTEM."); 217 case -1: 218 return (0); 219 } 220 /* 221 * 1: scan inodes tallying blocks used 222 */ 223 if (preen == 0) { 224 if (sblock.e2fs.e2fs_rev > E2FS_REV0) { 225 printf("** Last Mounted on %s\n", 226 sblock.e2fs.e2fs_fsmnt); 227 } 228 if (hotroot()) 229 printf("** Root file system\n"); 230 printf("** Phase 1 - Check Blocks and Sizes\n"); 231 } 232 pass1(); 233 234 /* 235 * 1b: locate first references to duplicates, if any 236 */ 237 if (duplist) { 238 if (preen) 239 pfatal("INTERNAL ERROR: dups with -p"); 240 printf("** Phase 1b - Rescan For More DUPS\n"); 241 pass1b(); 242 } 243 244 /* 245 * 2: traverse directories from root to mark all connected directories 246 */ 247 if (preen == 0) 248 printf("** Phase 2 - Check Pathnames\n"); 249 pass2(); 250 251 /* 252 * 3: scan inodes looking for disconnected directories 253 */ 254 if (preen == 0) 255 printf("** Phase 3 - Check Connectivity\n"); 256 pass3(); 257 258 /* 259 * 4: scan inodes looking for disconnected files; check reference counts 260 */ 261 if (preen == 0) 262 printf("** Phase 4 - Check Reference Counts\n"); 263 pass4(); 264 265 /* 266 * 5: check and repair resource counts in cylinder groups 267 */ 268 if (preen == 0) 269 printf("** Phase 5 - Check Cyl groups\n"); 270 pass5(); 271 272 /* 273 * print out summary statistics 274 */ 275 n_bfree = sblock.e2fs.e2fs_fbcount; 276 277 pwarn("%lld files, %lld used, %lld free\n", 278 (long long)n_files, (long long)n_blks, (long long)n_bfree); 279 if (debug && 280 /* 9 reserved and unused inodes in FS */ 281 (n_files -= maxino - 9 - sblock.e2fs.e2fs_ficount)) 282 printf("%lld files missing\n", (long long)n_files); 283 if (debug) { 284 for (i = 0; i < sblock.e2fs_ncg; i++) 285 n_blks += cgoverhead(i); 286 n_blks += sblock.e2fs.e2fs_first_dblock; 287 if (n_blks -= maxfsblock - n_bfree) 288 printf("%lld blocks missing\n", (long long)n_blks); 289 if (duplist != NULL) { 290 printf("The following duplicate blocks remain:"); 291 for (dp = duplist; dp; dp = dp->next) 292 printf(" %lld,", (long long)dp->dup); 293 printf("\n"); 294 } 295 if (zlnhead != NULL) { 296 printf("The following zero link count inodes remain:"); 297 for (zlnp = zlnhead; zlnp; zlnp = zlnp->next) 298 printf(" %u,", zlnp->zlncnt); 299 printf("\n"); 300 } 301 } 302 zlnhead = (struct zlncnt *)0; 303 duplist = (struct dups *)0; 304 muldup = (struct dups *)0; 305 inocleanup(); 306 if (fsmodified) { 307 time_t t; 308 (void)time(&t); 309 sblock.e2fs.e2fs_wtime = t; 310 sblock.e2fs.e2fs_lastfsck = t; 311 sbdirty(); 312 } 313 ckfini(1); 314 free(blockmap); 315 free(statemap); 316 free((char *)lncntp); 317 if (!fsmodified) 318 return (0); 319 if (!preen) 320 printf("\n***** FILE SYSTEM WAS MODIFIED *****\n"); 321 if (rerun) 322 printf("\n***** PLEASE RERUN FSCK *****\n"); 323 if (hotroot()) { 324 struct statfs stfs_buf; 325 /* 326 * We modified the root. Do a mount update on 327 * it, unless it is read-write, so we can continue. 328 */ 329 if (statfs("/", &stfs_buf) == 0) { 330 long flags = stfs_buf.f_flags; 331 struct ufs_args args; 332 int ret; 333 334 if (flags & MNT_RDONLY) { 335 args.fspec = 0; 336 args.export.ex_flags = 0; 337 args.export.ex_root = 0; 338 flags |= MNT_UPDATE | MNT_RELOAD; 339 ret = mount(MOUNT_EXT2FS, "/", flags, &args); 340 if (ret == 0) 341 return(0); 342 } 343 } 344 if (!preen) 345 printf("\n***** REBOOT NOW *****\n"); 346 sync(); 347 return (4); 348 } 349 return (0); 350 } 351 352 static void 353 usage() 354 { 355 356 (void) fprintf(stderr, 357 "Usage: %s [-dfnpy] [-b block] [-c level] [-m mode] filesystem ...\n", 358 getprogname()); 359 exit(1); 360 } 361 362
Indexes created Mon Sep 29 21:09:56 GMT 2025