1 /* $OpenBSD: main.c,v 1.9 2002/04/23 18:54:12 espie Exp $ */ 2 /* $NetBSD: main.c,v 1.1 1997/06/11 11:21:50 bouyer Exp $ */ 3 4 /* 5 * Copyright (c) 1997 Manuel Bouyer. 6 * Copyright (c) 1980, 1986, 1993 7 * The Regents of the University of California. All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by the University of 20 * California, Berkeley and its contributors. 21 * 4. Neither the name of the University nor the names of its contributors 22 * may be used to endorse or promote products derived from this software 23 * without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 */ 37 38 #ifndef lint 39 static char copyright[] = 40 "@(#) Copyright (c) 1980, 1986, 1993\n\ 41 The Regents of the University of California. All rights reserved.\n"; 42 #endif /* not lint */ 43 44 #ifndef lint 45 #if 0 46 static char sccsid[] = "@(#)main.c 8.2 (Berkeley) 1/23/94"; 47 #else 48 #if 0 49 static char rcsid[] = "$NetBSD: main.c,v 1.1 1997/06/11 11:21:50 bouyer Exp $"; 50 #else 51 static char rcsid[] = "$OpenBSD: main.c,v 1.9 2002/04/23 18:54:12 espie Exp $"; 52 #endif 53 #endif 54 #endif /* not lint */ 55 56 #include <sys/param.h> 57 #include <sys/time.h> 58 #include <sys/mount.h> 59 #include <ufs/ext2fs/ext2fs_dinode.h> 60 #include <ufs/ext2fs/ext2fs.h> 61 #include <fstab.h> 62 #include <stdlib.h> 63 #include <string.h> 64 #include <ctype.h> 65 #include <stdio.h> 66 #include <time.h> 67 #include <unistd.h> 68 69 #include "fsck.h" 70 #include "extern.h" 71 #include "fsutil.h" 72 73 int returntosingle; 74 75 int main(int, char *[]); 76 77 static int argtoi(int, char *, char *, int); 78 static int checkfilesys(char *, char *, long, int); 79 static void usage(void); 80 81 82 int 83 main(argc, argv) 84 int argc; 85 char *argv[]; 86 { 87 int ch; 88 int ret = 0; 89 90 sync(); 91 skipclean = 1; 92 while ((ch = getopt(argc, argv, "b:c:dfm:npy")) != -1) { 93 switch (ch) { 94 case 'b': 95 skipclean = 0; 96 bflag = argtoi('b', "number", optarg, 10); 97 printf("Alternate super block location: %d\n", bflag); 98 break; 99 100 case 'd': 101 debug++; 102 break; 103 104 case 'f': 105 skipclean = 0; 106 break; 107 108 case 'm': 109 lfmode = argtoi('m', "mode", optarg, 8); 110 if (lfmode &~ 07777) 111 errexit("bad mode to -m: %o\n", lfmode); 112 printf("** lost+found creation mode %o\n", lfmode); 113 break; 114 115 case 'n': 116 nflag++; 117 yflag = 0; 118 break; 119 120 case 'p': 121 preen++; 122 break; 123 124 case 'y': 125 yflag++; 126 nflag = 0; 127 break; 128 129 default: 130 usage(); 131 } 132 } 133 134 argc -= optind; 135 argv += optind; 136 137 if (!argc) 138 usage(); 139 140 if (signal(SIGINT, SIG_IGN) != SIG_IGN) 141 (void)signal(SIGINT, catch); 142 if (preen) 143 (void)signal(SIGQUIT, catchquit); 144 145 while (argc-- > 0) 146 (void)checkfilesys(blockcheck(*argv++), 0, 0L, 0); 147 148 if (returntosingle) 149 ret = 2; 150 151 exit(ret); 152 } 153 154 static int 155 argtoi(flag, req, str, base) 156 int flag; 157 char *req, *str; 158 int base; 159 { 160 char *cp; 161 int ret; 162 163 ret = (int)strtol(str, &cp, base); 164 if (cp == str || *cp) 165 errexit("-%c flag requires a %s\n", flag, req); 166 return (ret); 167 } 168 169 /* 170 * Check the specified filesystem. 171 */ 172 /* ARGSUSED */ 173 static int 174 checkfilesys(filesys, mntpt, auxdata, child) 175 char *filesys, *mntpt; 176 long auxdata; 177 int child; 178 { 179 daddr_t n_bfree; 180 struct dups *dp; 181 struct zlncnt *zlnp; 182 int i; 183 184 if (preen && child) 185 (void)signal(SIGQUIT, voidquit); 186 setcdevname(filesys, preen); 187 if (debug && preen) 188 pwarn("starting\n"); 189 switch (setup(filesys)) { 190 case 0: 191 if (preen) 192 pfatal("CAN'T CHECK FILE SYSTEM."); 193 case -1: 194 return (0); 195 } 196 /* 197 * 1: scan inodes tallying blocks used 198 */ 199 if (preen == 0) { 200 if (sblock.e2fs.e2fs_rev > E2FS_REV0) { 201 printf("** Last Mounted on %s\n", 202 sblock.e2fs.e2fs_fsmnt); 203 } 204 if (hotroot()) 205 printf("** Root file system\n"); 206 printf("** Phase 1 - Check Blocks and Sizes\n"); 207 } 208 pass1(); 209 210 /* 211 * 1b: locate first references to duplicates, if any 212 */ 213 if (duplist) { 214 if (preen) 215 pfatal("INTERNAL ERROR: dups with -p"); 216 printf("** Phase 1b - Rescan For More DUPS\n"); 217 pass1b(); 218 } 219 220 /* 221 * 2: traverse directories from root to mark all connected directories 222 */ 223 if (preen == 0) 224 printf("** Phase 2 - Check Pathnames\n"); 225 pass2(); 226 227 /* 228 * 3: scan inodes looking for disconnected directories 229 */ 230 if (preen == 0) 231 printf("** Phase 3 - Check Connectivity\n"); 232 pass3(); 233 234 /* 235 * 4: scan inodes looking for disconnected files; check reference counts 236 */ 237 if (preen == 0) 238 printf("** Phase 4 - Check Reference Counts\n"); 239 pass4(); 240 241 /* 242 * 5: check and repair resource counts in cylinder groups 243 */ 244 if (preen == 0) 245 printf("** Phase 5 - Check Cyl groups\n"); 246 pass5(); 247 248 /* 249 * print out summary statistics 250 */ 251 n_bfree = sblock.e2fs.e2fs_fbcount; 252 253 pwarn("%d files, %d used, %d free\n", 254 n_files, n_blks, n_bfree); 255 if (debug && 256 /* 9 reserved and unused inodes in FS */ 257 (n_files -= maxino - 9 - sblock.e2fs.e2fs_ficount)) 258 printf("%d files missing\n", n_files); 259 if (debug) { 260 for (i = 0; i < sblock.e2fs_ncg; i++) 261 n_blks += cgoverhead(i); 262 n_blks += sblock.e2fs.e2fs_first_dblock; 263 if (n_blks -= maxfsblock - n_bfree) 264 printf("%d blocks missing\n", n_blks); 265 if (duplist != NULL) { 266 printf("The following duplicate blocks remain:"); 267 for (dp = duplist; dp; dp = dp->next) 268 printf(" %d,", dp->dup); 269 printf("\n"); 270 } 271 if (zlnhead != NULL) { 272 printf("The following zero link count inodes remain:"); 273 for (zlnp = zlnhead; zlnp; zlnp = zlnp->next) 274 printf(" %u,", zlnp->zlncnt); 275 printf("\n"); 276 } 277 } 278 zlnhead = (struct zlncnt *)0; 279 duplist = (struct dups *)0; 280 muldup = (struct dups *)0; 281 inocleanup(); 282 if (fsmodified) { 283 time_t t; 284 (void)time(&t); 285 sblock.e2fs.e2fs_wtime = t; 286 sblock.e2fs.e2fs_lastfsck = t; 287 sbdirty(); 288 } 289 ckfini(1); 290 free(blockmap); 291 free(statemap); 292 free((char *)lncntp); 293 if (!fsmodified) 294 return (0); 295 if (!preen) 296 printf("\n***** FILE SYSTEM WAS MODIFIED *****\n"); 297 if (rerun) 298 printf("\n***** PLEASE RERUN FSCK *****\n"); 299 if (hotroot()) { 300 struct statfs stfs_buf; 301 /* 302 * We modified the root. Do a mount update on 303 * it, unless it is read-write, so we can continue. 304 */ 305 if (statfs("/", &stfs_buf) == 0) { 306 long flags = stfs_buf.f_flags; 307 struct ufs_args args; 308 int ret; 309 310 if (flags & MNT_RDONLY) { 311 args.fspec = 0; 312 args.export_info.ex_flags = 0; 313 args.export_info.ex_root = 0; 314 flags |= MNT_UPDATE | MNT_RELOAD; 315 ret = mount(MOUNT_EXT2FS, "/", flags, &args); 316 if (ret == 0) 317 return(0); 318 } 319 } 320 if (!preen) 321 printf("\n***** REBOOT NOW *****\n"); 322 sync(); 323 return (4); 324 } 325 return (0); 326 } 327 328 static void 329 usage() 330 { 331 extern char *__progname; 332 333 (void) fprintf(stderr, 334 "Usage: %s [-dfnpy] [-b block] [-c level] [-m mode] filesystem ...\n", 335 __progname); 336 exit(1); 337 } 338 339