main.c revision 1.19
1 /* $NetBSD: main.c,v 1.19 2005/01/13 15:22:35 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 * 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 AUTHOR ``AS IS'' AND ANY EXPRESS OR 50 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 51 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 52 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 53 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 54 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 55 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 56 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 57 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 58 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 59 */ 60 61 #include <sys/cdefs.h> 62 #ifndef lint 63 __COPYRIGHT("@(#) Copyright (c) 1980, 1986, 1993\n\ 64 The Regents of the University of California. All rights reserved.\n"); 65 #endif /* not lint */ 66 67 #ifndef lint 68 #if 0 69 static char sccsid[] = "@(#)main.c 8.2 (Berkeley) 1/23/94"; 70 #else 71 __RCSID("$NetBSD: main.c,v 1.19 2005/01/13 15:22:35 christos Exp $"); 72 #endif 73 #endif /* not lint */ 74 75 #include <sys/param.h> 76 #include <sys/time.h> 77 #include <sys/mount.h> 78 #include <ufs/ufs/ufsmount.h> 79 #include <ufs/ext2fs/ext2fs_dinode.h> 80 #include <ufs/ext2fs/ext2fs.h> 81 #include <fstab.h> 82 #include <stdlib.h> 83 #include <string.h> 84 #include <ctype.h> 85 #include <stdio.h> 86 #include <time.h> 87 #include <unistd.h> 88 89 #include "fsck.h" 90 #include "extern.h" 91 #include "fsutil.h" 92 93 int returntosingle; 94 95 int main __P((int, char *[])); 96 97 static int argtoi __P((int, char *, char *, int)); 98 static int checkfilesys __P((const char *, char *, long, int)); 99 static void usage __P((void)); 100 101 int 102 main(argc, argv) 103 int argc; 104 char *argv[]; 105 { 106 int ch; 107 int ret = 0; 108 109 sync(); 110 skipclean = 1; 111 while ((ch = getopt(argc, argv, "b:dfm:npqy")) != -1) { 112 switch (ch) { 113 case 'b': 114 skipclean = 0; 115 bflag = argtoi('b', "number", optarg, 10); 116 printf("Alternate super block location: %d\n", bflag); 117 break; 118 119 case 'd': 120 debug++; 121 break; 122 123 case 'f': 124 skipclean = 0; 125 break; 126 127 case 'm': 128 lfmode = argtoi('m', "mode", optarg, 8); 129 if (lfmode &~ 07777) 130 errexit("bad mode to -m: %o\n", lfmode); 131 printf("** lost+found creation mode %o\n", lfmode); 132 break; 133 134 case 'n': 135 nflag++; 136 yflag = 0; 137 break; 138 139 case 'p': 140 preen++; 141 break; 142 143 case 'P': 144 /* Progress meter not implemented. */ 145 break; 146 147 case 'q': /* Quiet not implemented */ 148 break; 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 (void)checkfilesys(blockcheck(*argv++), 0, 0L, 0); 173 174 if (returntosingle) 175 ret = 2; 176 177 exit(ret); 178 } 179 180 static int 181 argtoi(flag, req, str, base) 182 int flag; 183 char *req, *str; 184 int base; 185 { 186 char *cp; 187 int ret; 188 189 ret = (int)strtol(str, &cp, base); 190 if (cp == str || *cp) 191 errexit("-%c flag requires a %s\n", flag, req); 192 return (ret); 193 } 194 195 /* 196 * Check the specified filesystem. 197 */ 198 /* ARGSUSED */ 199 static int 200 checkfilesys(filesys, mntpt, auxdata, child) 201 const char *filesys; 202 char *mntpt; 203 long auxdata; 204 int child; 205 { 206 daddr_t n_bfree; 207 struct dups *dp; 208 struct zlncnt *zlnp; 209 int i; 210 211 if (preen && child) 212 (void)signal(SIGQUIT, voidquit); 213 setcdevname(filesys, preen); 214 if (debug && preen) 215 pwarn("starting\n"); 216 switch (setup(filesys)) { 217 case 0: 218 if (preen) 219 pfatal("CAN'T CHECK FILE SYSTEM."); 220 case -1: 221 return (0); 222 } 223 /* 224 * 1: scan inodes tallying blocks used 225 */ 226 if (preen == 0) { 227 if (sblock.e2fs.e2fs_rev > E2FS_REV0) { 228 printf("** Last Mounted on %s\n", 229 sblock.e2fs.e2fs_fsmnt); 230 } 231 if (hotroot()) 232 printf("** Root file system\n"); 233 printf("** Phase 1 - Check Blocks and Sizes\n"); 234 } 235 pass1(); 236 237 /* 238 * 1b: locate first references to duplicates, if any 239 */ 240 if (duplist) { 241 if (preen) 242 pfatal("INTERNAL ERROR: dups with -p"); 243 printf("** Phase 1b - Rescan For More DUPS\n"); 244 pass1b(); 245 } 246 247 /* 248 * 2: traverse directories from root to mark all connected directories 249 */ 250 if (preen == 0) 251 printf("** Phase 2 - Check Pathnames\n"); 252 pass2(); 253 254 /* 255 * 3: scan inodes looking for disconnected directories 256 */ 257 if (preen == 0) 258 printf("** Phase 3 - Check Connectivity\n"); 259 pass3(); 260 261 /* 262 * 4: scan inodes looking for disconnected files; check reference counts 263 */ 264 if (preen == 0) 265 printf("** Phase 4 - Check Reference Counts\n"); 266 pass4(); 267 268 /* 269 * 5: check and repair resource counts in cylinder groups 270 */ 271 if (preen == 0) 272 printf("** Phase 5 - Check Cyl groups\n"); 273 pass5(); 274 275 /* 276 * print out summary statistics 277 */ 278 n_bfree = sblock.e2fs.e2fs_fbcount; 279 280 pwarn("%lld files, %lld used, %lld free\n", 281 (long long)n_files, (long long)n_blks, (long long)n_bfree); 282 if (debug && 283 /* 9 reserved and unused inodes in FS */ 284 (n_files -= maxino - 9 - sblock.e2fs.e2fs_ficount)) 285 printf("%lld files missing\n", (long long)n_files); 286 if (debug) { 287 for (i = 0; i < sblock.e2fs_ncg; i++) 288 n_blks += cgoverhead(i); 289 n_blks += sblock.e2fs.e2fs_first_dblock; 290 if (n_blks -= maxfsblock - n_bfree) 291 printf("%lld blocks missing\n", (long long)n_blks); 292 if (duplist != NULL) { 293 printf("The following duplicate blocks remain:"); 294 for (dp = duplist; dp; dp = dp->next) 295 printf(" %lld,", (long long)dp->dup); 296 printf("\n"); 297 } 298 if (zlnhead != NULL) { 299 printf("The following zero link count inodes remain:"); 300 for (zlnp = zlnhead; zlnp; zlnp = zlnp->next) 301 printf(" %u,", zlnp->zlncnt); 302 printf("\n"); 303 } 304 } 305 zlnhead = (struct zlncnt *)0; 306 duplist = (struct dups *)0; 307 muldup = (struct dups *)0; 308 inocleanup(); 309 if (fsmodified) { 310 time_t t; 311 (void)time(&t); 312 sblock.e2fs.e2fs_wtime = t; 313 sblock.e2fs.e2fs_lastfsck = t; 314 sbdirty(); 315 } 316 ckfini(1); 317 free(blockmap); 318 free(statemap); 319 free((char *)lncntp); 320 if (!fsmodified) 321 return (0); 322 if (!preen) 323 printf("\n***** FILE SYSTEM WAS MODIFIED *****\n"); 324 if (rerun) 325 printf("\n***** PLEASE RERUN FSCK *****\n"); 326 if (hotroot()) { 327 struct statvfs stfs_buf; 328 /* 329 * We modified the root. Do a mount update on 330 * it, unless it is read-write, so we can continue. 331 */ 332 if (statvfs("/", &stfs_buf) == 0) { 333 long flags = stfs_buf.f_flag; 334 struct ufs_args args; 335 int ret; 336 337 if (flags & MNT_RDONLY) { 338 args.fspec = 0; 339 args.export.ex_flags = 0; 340 args.export.ex_root = 0; 341 flags |= MNT_UPDATE | MNT_RELOAD; 342 ret = mount(MOUNT_EXT2FS, "/", flags, &args); 343 if (ret == 0) 344 return(0); 345 } 346 } 347 if (!preen) 348 printf("\n***** REBOOT NOW *****\n"); 349 sync(); 350 return (4); 351 } 352 return (0); 353 } 354 355 static void 356 usage() 357 { 358 359 (void) fprintf(stderr, 360 "usage: %s [-dfnpy] [-b block] [-c level] [-m mode] filesystem ...\n", 361 getprogname()); 362 exit(1); 363 } 364 365
Indexes created Mon Sep 29 21:09:56 GMT 2025