main.c revision 1.13
1 /* $NetBSD: main.c,v 1.13 2003/10/05 17:48:49 bouyer 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 1.13 2003/10/05 17:48:49 bouyer 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:npy")) != -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 'y': 145 yflag++; 146 nflag = 0; 147 break; 148 149 default: 150 usage(); 151 } 152 } 153 154 argc -= optind; 155 argv += optind; 156 157 if (!argc) 158 usage(); 159 160 if (signal(SIGINT, SIG_IGN) != SIG_IGN) 161 (void)signal(SIGINT, catch); 162 if (preen) 163 (void)signal(SIGQUIT, catchquit); 164 165 while (argc-- > 0) 166 (void)checkfilesys(blockcheck(*argv++), 0, 0L, 0); 167 168 if (returntosingle) 169 ret = 2; 170 171 exit(ret); 172 } 173 174 static int 175 argtoi(flag, req, str, base) 176 int flag; 177 char *req, *str; 178 int base; 179 { 180 char *cp; 181 int ret; 182 183 ret = (int)strtol(str, &cp, base); 184 if (cp == str || *cp) 185 errexit("-%c flag requires a %s\n", flag, req); 186 return (ret); 187 } 188 189 /* 190 * Check the specified filesystem. 191 */ 192 /* ARGSUSED */ 193 static int 194 checkfilesys(filesys, mntpt, auxdata, child) 195 const char *filesys; 196 char *mntpt; 197 long auxdata; 198 int child; 199 { 200 daddr_t n_bfree; 201 struct dups *dp; 202 struct zlncnt *zlnp; 203 int i; 204 205 if (preen && child) 206 (void)signal(SIGQUIT, voidquit); 207 setcdevname(filesys, preen); 208 if (debug && preen) 209 pwarn("starting\n"); 210 switch (setup(filesys)) { 211 case 0: 212 if (preen) 213 pfatal("CAN'T CHECK FILE SYSTEM."); 214 case -1: 215 return (0); 216 } 217 /* 218 * 1: scan inodes tallying blocks used 219 */ 220 if (preen == 0) { 221 if (sblock.e2fs.e2fs_rev > E2FS_REV0) { 222 printf("** Last Mounted on %s\n", 223 sblock.e2fs.e2fs_fsmnt); 224 } 225 if (hotroot()) 226 printf("** Root file system\n"); 227 printf("** Phase 1 - Check Blocks and Sizes\n"); 228 } 229 pass1(); 230 231 /* 232 * 1b: locate first references to duplicates, if any 233 */ 234 if (duplist) { 235 if (preen) 236 pfatal("INTERNAL ERROR: dups with -p"); 237 printf("** Phase 1b - Rescan For More DUPS\n"); 238 pass1b(); 239 } 240 241 /* 242 * 2: traverse directories from root to mark all connected directories 243 */ 244 if (preen == 0) 245 printf("** Phase 2 - Check Pathnames\n"); 246 pass2(); 247 248 /* 249 * 3: scan inodes looking for disconnected directories 250 */ 251 if (preen == 0) 252 printf("** Phase 3 - Check Connectivity\n"); 253 pass3(); 254 255 /* 256 * 4: scan inodes looking for disconnected files; check reference counts 257 */ 258 if (preen == 0) 259 printf("** Phase 4 - Check Reference Counts\n"); 260 pass4(); 261 262 /* 263 * 5: check and repair resource counts in cylinder groups 264 */ 265 if (preen == 0) 266 printf("** Phase 5 - Check Cyl groups\n"); 267 pass5(); 268 269 /* 270 * print out summary statistics 271 */ 272 n_bfree = sblock.e2fs.e2fs_fbcount; 273 274 pwarn("%lld files, %lld used, %lld free\n", 275 (long long)n_files, (long long)n_blks, (long long)n_bfree); 276 if (debug && 277 /* 9 reserved and unused inodes in FS */ 278 (n_files -= maxino - 9 - sblock.e2fs.e2fs_ficount)) 279 printf("%lld files missing\n", (long long)n_files); 280 if (debug) { 281 for (i = 0; i < sblock.e2fs_ncg; i++) 282 n_blks += cgoverhead(i); 283 n_blks += sblock.e2fs.e2fs_first_dblock; 284 if (n_blks -= maxfsblock - n_bfree) 285 printf("%lld blocks missing\n", (long long)n_blks); 286 if (duplist != NULL) { 287 printf("The following duplicate blocks remain:"); 288 for (dp = duplist; dp; dp = dp->next) 289 printf(" %lld,", (long long)dp->dup); 290 printf("\n"); 291 } 292 if (zlnhead != NULL) { 293 printf("The following zero link count inodes remain:"); 294 for (zlnp = zlnhead; zlnp; zlnp = zlnp->next) 295 printf(" %u,", 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 (0); 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 statfs 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 (statfs("/", &stfs_buf) == 0) { 327 long flags = stfs_buf.f_flags; 328 struct ufs_args args; 329 int ret; 330 331 if (flags & MNT_RDONLY) { 332 args.fspec = 0; 333 args.export.ex_flags = 0; 334 args.export.ex_root = 0; 335 flags |= MNT_UPDATE | MNT_RELOAD; 336 ret = mount(MOUNT_EXT2FS, "/", flags, &args); 337 if (ret == 0) 338 return(0); 339 } 340 } 341 if (!preen) 342 printf("\n***** REBOOT NOW *****\n"); 343 sync(); 344 return (4); 345 } 346 return (0); 347 } 348 349 static void 350 usage() 351 { 352 353 (void) fprintf(stderr, 354 "Usage: %s [-dfnpy] [-b block] [-c level] [-m mode] filesystem ...\n", 355 getprogname()); 356 exit(1); 357 } 358 359
Indexes created Tue Sep 30 07:10:03 GMT 2025