1 /* $NetBSD: main.c,v 1.1 1997/06/11 11:21:50 bouyer Exp $ */ 2 3 /* 4 * Copyright (c) 1997 Manuel Bouyer. 5 * Copyright (c) 1980, 1986, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 */ 36 37 #ifndef lint 38 static char copyright[] = 39 "@(#) Copyright (c) 1980, 1986, 1993\n\ 40 The Regents of the University of California. All rights reserved.\n"; 41 #endif /* not lint */ 42 43 #ifndef lint 44 #if 0 45 static char sccsid[] = "@(#)main.c 8.2 (Berkeley) 1/23/94"; 46 #else 47 static char rcsid[] = "$NetBSD: main.c,v 1.1 1997/06/11 11:21:50 bouyer Exp $"; 48 #endif 49 #endif /* not lint */ 50 51 #include <sys/param.h> 52 #include <sys/time.h> 53 #include <sys/mount.h> 54 #include <ufs/ext2fs/ext2fs_dinode.h> 55 #include <ufs/ext2fs/ext2fs.h> 56 #include <fstab.h> 57 #include <stdlib.h> 58 #include <string.h> 59 #include <ctype.h> 60 #include <stdio.h> 61 #include <unistd.h> 62 63 #include "fsck.h" 64 #include "extern.h" 65 #include "fsutil.h" 66 67 int returntosingle; 68 69 int main __P((int, char *[])); 70 71 static int argtoi __P((int, char *, char *, int)); 72 static int checkfilesys __P((char *, char *, long, int)); 73 static int docheck __P((struct fstab *)); 74 static void usage __P((void)); 75 76 77 int 78 main(argc, argv) 79 int argc; 80 char *argv[]; 81 { 82 int ch; 83 int ret = 0; 84 extern char *optarg; 85 extern int optind; 86 87 sync(); 88 skipclean = 1; 89 while ((ch = getopt(argc, argv, "b:c:dfm:npy")) != EOF) { 90 switch (ch) { 91 case 'b': 92 skipclean = 0; 93 bflag = argtoi('b', "number", optarg, 10); 94 printf("Alternate super block location: %d\n", bflag); 95 break; 96 97 case 'd': 98 debug++; 99 break; 100 101 case 'f': 102 skipclean = 0; 103 break; 104 105 case 'm': 106 lfmode = argtoi('m', "mode", optarg, 8); 107 if (lfmode &~ 07777) 108 errexit("bad mode to -m: %o\n", lfmode); 109 printf("** lost+found creation mode %o\n", lfmode); 110 break; 111 112 case 'n': 113 nflag++; 114 yflag = 0; 115 break; 116 117 case 'p': 118 preen++; 119 break; 120 121 case 'y': 122 yflag++; 123 nflag = 0; 124 break; 125 126 default: 127 usage(); 128 } 129 } 130 131 argc -= optind; 132 argv += optind; 133 134 if (!argc) 135 usage(); 136 137 if (signal(SIGINT, SIG_IGN) != SIG_IGN) 138 (void)signal(SIGINT, catch); 139 if (preen) 140 (void)signal(SIGQUIT, catchquit); 141 142 while (argc-- > 0) 143 (void)checkfilesys(blockcheck(*argv++), 0, 0L, 0); 144 145 if (returntosingle) 146 ret = 2; 147 148 exit(ret); 149 } 150 151 static int 152 argtoi(flag, req, str, base) 153 int flag; 154 char *req, *str; 155 int base; 156 { 157 char *cp; 158 int ret; 159 160 ret = (int)strtol(str, &cp, base); 161 if (cp == str || *cp) 162 errexit("-%c flag requires a %s\n", flag, req); 163 return (ret); 164 } 165 166 /* 167 * Determine whether a filesystem should be checked. 168 */ 169 static int 170 docheck(fsp) 171 register struct fstab *fsp; 172 { 173 174 if ( strcmp(fsp->fs_vfstype, "ext2fs") || 175 (strcmp(fsp->fs_type, FSTAB_RW) && 176 strcmp(fsp->fs_type, FSTAB_RO)) || 177 fsp->fs_passno == 0) 178 return (0); 179 return (1); 180 } 181 182 /* 183 * Check the specified filesystem. 184 */ 185 /* ARGSUSED */ 186 static int 187 checkfilesys(filesys, mntpt, auxdata, child) 188 char *filesys, *mntpt; 189 long auxdata; 190 int child; 191 { 192 daddr_t n_bfree; 193 struct dups *dp; 194 struct zlncnt *zlnp; 195 int cylno; 196 197 if (preen && child) 198 (void)signal(SIGQUIT, voidquit); 199 setcdevname(filesys, preen); 200 if (debug && preen) 201 pwarn("starting\n"); 202 switch (setup(filesys)) { 203 case 0: 204 if (preen) 205 pfatal("CAN'T CHECK FILE SYSTEM."); 206 case -1: 207 return (0); 208 } 209 /* 210 * 1: scan inodes tallying blocks used 211 */ 212 if (preen == 0) { 213 if (hotroot()) 214 printf("** Root file system\n"); 215 printf("** Phase 1 - Check Blocks and Sizes\n"); 216 } 217 pass1(); 218 219 /* 220 * 1b: locate first references to duplicates, if any 221 */ 222 if (duplist) { 223 if (preen) 224 pfatal("INTERNAL ERROR: dups with -p"); 225 printf("** Phase 1b - Rescan For More DUPS\n"); 226 pass1b(); 227 } 228 229 /* 230 * 2: traverse directories from root to mark all connected directories 231 */ 232 if (preen == 0) 233 printf("** Phase 2 - Check Pathnames\n"); 234 pass2(); 235 236 /* 237 * 3: scan inodes looking for disconnected directories 238 */ 239 if (preen == 0) 240 printf("** Phase 3 - Check Connectivity\n"); 241 pass3(); 242 243 /* 244 * 4: scan inodes looking for disconnected files; check reference counts 245 */ 246 if (preen == 0) 247 printf("** Phase 4 - Check Reference Counts\n"); 248 pass4(); 249 250 /* 251 * 5: check and repair resource counts in cylinder groups 252 */ 253 if (preen == 0) 254 printf("** Phase 5 - Check Cyl groups\n"); 255 pass5(); 256 257 /* 258 * print out summary statistics 259 */ 260 n_bfree = sblock.e2fs.e2fs_fbcount; 261 262 pwarn("%d files, %d used, %d free\n", 263 n_files, n_blks, n_bfree); 264 if (debug && 265 /* 9 reserved and unused inodes in FS */ 266 (n_files -= maxino - 9 - sblock.e2fs.e2fs_ficount)) 267 printf("%d files missing\n", n_files); 268 if (debug) { 269 n_blks += sblock.e2fs_ncg * cgoverhead; 270 n_blks += sblock.e2fs.e2fs_first_dblock; 271 if (n_blks -= maxfsblock - n_bfree) 272 printf("%d blocks missing\n", n_blks); 273 if (duplist != NULL) { 274 printf("The following duplicate blocks remain:"); 275 for (dp = duplist; dp; dp = dp->next) 276 printf(" %d,", dp->dup); 277 printf("\n"); 278 } 279 if (zlnhead != NULL) { 280 printf("The following zero link count inodes remain:"); 281 for (zlnp = zlnhead; zlnp; zlnp = zlnp->next) 282 printf(" %u,", zlnp->zlncnt); 283 printf("\n"); 284 } 285 } 286 zlnhead = (struct zlncnt *)0; 287 duplist = (struct dups *)0; 288 muldup = (struct dups *)0; 289 inocleanup(); 290 if (fsmodified) { 291 time_t t; 292 (void)time(&t); 293 sblock.e2fs.e2fs_wtime = t; 294 sblock.e2fs.e2fs_lastfsck = t; 295 sbdirty(); 296 } 297 ckfini(1); 298 free(blockmap); 299 free(statemap); 300 free((char *)lncntp); 301 if (!fsmodified) 302 return (0); 303 if (!preen) 304 printf("\n***** FILE SYSTEM WAS MODIFIED *****\n"); 305 if (rerun) 306 printf("\n***** PLEASE RERUN FSCK *****\n"); 307 if (hotroot()) { 308 struct statfs stfs_buf; 309 /* 310 * We modified the root. Do a mount update on 311 * it, unless it is read-write, so we can continue. 312 */ 313 if (statfs("/", &stfs_buf) == 0) { 314 long flags = stfs_buf.f_flags; 315 struct ufs_args args; 316 int ret; 317 318 if (flags & MNT_RDONLY) { 319 args.fspec = 0; 320 args.export.ex_flags = 0; 321 args.export.ex_root = 0; 322 flags |= MNT_UPDATE | MNT_RELOAD; 323 ret = mount(MOUNT_EXT2FS, "/", flags, &args); 324 if (ret == 0) 325 return(0); 326 } 327 } 328 if (!preen) 329 printf("\n***** REBOOT NOW *****\n"); 330 sync(); 331 return (4); 332 } 333 return (0); 334 } 335 336 static void 337 usage() 338 { 339 extern char *__progname; 340 341 (void) fprintf(stderr, 342 "Usage: %s [-dfnpy] [-b block] [-c level] [-m mode] filesystem ...\n", 343 __progname); 344 exit(1); 345 } 346 347