1 /* $NetBSD: main.c,v 1.5 2000/05/23 01:48:53 perseant 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. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/param.h> 37 #include <sys/time.h> 38 #include <sys/mount.h> 39 #include <ufs/ufs/dinode.h> 40 #include <sys/mount.h> 41 #include <ufs/ufs/ufsmount.h> 42 #include <ufs/lfs/lfs.h> 43 #include <fstab.h> 44 #include <stdlib.h> 45 #include <string.h> 46 #include <ctype.h> 47 #include <stdio.h> 48 #include <unistd.h> 49 #include <err.h> 50 51 #include "fsck.h" 52 #include "extern.h" 53 #include "fsutil.h" 54 55 int returntosingle; 56 int fake_cleanseg = -1; 57 58 int main(int, char *[]); 59 60 static int argtoi(int, char *, char *, int); 61 static int checkfilesys(const char *, char *, long, int); 62 #if 0 63 static int docheck(struct fstab *); 64 #endif 65 static void usage(void); 66 67 int 68 main(int argc, char **argv) 69 { 70 int ch; 71 int ret = 0; 72 char *optstring = "b:C:dm:npy"; 73 74 sync(); 75 skipclean = 1; 76 exitonfail = 0; 77 while ((ch = getopt(argc, argv, optstring)) != EOF) { 78 switch (ch) { 79 case 'b': 80 skipclean = 0; 81 bflag = argtoi('b', "number", optarg, 10); 82 printf("Alternate super block location: %d\n", bflag); 83 break; 84 case 'C': 85 fake_cleanseg = atoi(optarg); 86 break; 87 case 'd': 88 debug++; 89 break; 90 case 'e': 91 exitonfail++; 92 break; 93 case 'm': 94 lfmode = argtoi('m', "mode", optarg, 8); 95 if (lfmode & ~07777) 96 errexit("bad mode to -m: %o\n", lfmode); 97 printf("** lost+found creation mode %o\n", lfmode); 98 break; 99 100 case 'n': 101 nflag++; 102 yflag = 0; 103 break; 104 105 case 'p': 106 preen++; 107 break; 108 109 case 'y': 110 yflag++; 111 nflag = 0; 112 break; 113 114 default: 115 usage(); 116 } 117 } 118 #if 0 119 if (nflag == 0) { 120 errexit("fsck_lfs cannot write to the filesystem yet; the -n flag is required.\n"); 121 } 122 #endif 123 124 argc -= optind; 125 argv += optind; 126 127 if (!argc) 128 usage(); 129 130 if (signal(SIGINT, SIG_IGN) != SIG_IGN) 131 (void)signal(SIGINT, catch); 132 if (preen) 133 (void)signal(SIGQUIT, catchquit); 134 135 while (argc-- > 0) 136 (void)checkfilesys(blockcheck(*argv++), 0, 0L, 0); 137 138 if (returntosingle) 139 ret = 2; 140 141 exit(ret); 142 } 143 144 static int 145 argtoi(int flag, char *req, char *str, int base) 146 { 147 char *cp; 148 int ret; 149 150 ret = (int)strtol(str, &cp, base); 151 if (cp == str || *cp) 152 errexit("-%c flag requires a %s\n", flag, req); 153 return (ret); 154 } 155 156 #if 0 157 /* 158 * Determine whether a filesystem should be checked. 159 */ 160 static int 161 docheck(struct fstab * fsp) 162 { 163 164 if ((strcmp(fsp->fs_vfstype, "ufs") && 165 strcmp(fsp->fs_vfstype, "ffs")) || 166 (strcmp(fsp->fs_type, FSTAB_RW) && 167 strcmp(fsp->fs_type, FSTAB_RO)) || 168 fsp->fs_passno == 0) 169 return (0); 170 return (1); 171 } 172 #endif 173 174 /* 175 * Check the specified filesystem. 176 */ 177 /* ARGSUSED */ 178 static int 179 checkfilesys(const char *filesys, char *mntpt, long auxdata, int child) 180 { 181 daddr_t n_ffree = 0, n_bfree = 0; 182 struct dups *dp; 183 struct zlncnt *zlnp; 184 185 if (preen && child) 186 (void)signal(SIGQUIT, voidquit); 187 setcdevname(filesys, preen); 188 if (debug && preen) 189 pwarn("starting\n"); 190 switch (setup(filesys)) { 191 case 0: 192 if (preen) 193 pfatal("CAN'T CHECK FILE SYSTEM."); 194 case -1: 195 return (0); 196 } 197 198 if (preen == 0) { 199 printf("** Last Mounted on %s\n", sblock.lfs_fsmnt); 200 if (hotroot()) 201 printf("** Root file system\n"); 202 } 203 /* 204 * 0: check segment checksums, inode ranges 205 */ 206 if (preen == 0) 207 printf("** Phase 0 - Check Segment Summaries and Inode Free List\n"); 208 pass0(); 209 210 if (preen == 0) { 211 /* 212 * 1: scan inodes tallying blocks used 213 */ 214 if (preen == 0) 215 printf("** Phase 1 - Check Blocks and Sizes\n"); 216 pass1(); 217 218 /* 219 * 2: traverse directories from root to mark all connected directories 220 */ 221 if (preen == 0) 222 printf("** Phase 2 - Check Pathnames\n"); 223 pass2(); 224 225 /* 226 * 3: scan inodes looking for disconnected directories 227 */ 228 if (preen == 0) 229 printf("** Phase 3 - Check Connectivity\n"); 230 pass3(); 231 232 /* 233 * 4: scan inodes looking for disconnected files; check reference counts 234 */ 235 if (preen == 0) 236 printf("** Phase 4 - Check Reference Counts\n"); 237 pass4(); 238 239 240 /* 241 * 5: check segment byte totals and dirty flags 242 */ 243 if (preen == 0) 244 printf("** Phase 5 - Check Segment Block Accounting\n"); 245 pass5(); 246 247 /* 248 * print out summary statistics 249 */ 250 pwarn("%d files, %d used, %d free ", 251 n_files, n_blks, n_ffree + sblock.lfs_frag * n_bfree); 252 putchar('\n'); 253 } 254 if (debug) { 255 if (duplist != NULL) { 256 printf("The following duplicate blocks remain:"); 257 for (dp = duplist; dp; dp = dp->next) 258 printf(" %d,", dp->dup); 259 printf("\n"); 260 } 261 if (zlnhead != NULL) { 262 printf("The following zero link count inodes remain:"); 263 for (zlnp = zlnhead; zlnp; zlnp = zlnp->next) 264 printf(" %u,", zlnp->zlncnt); 265 printf("\n"); 266 } 267 } 268 zlnhead = (struct zlncnt *)0; 269 duplist = (struct dups *)0; 270 muldup = (struct dups *)0; 271 inocleanup(); 272 273 ckfini(1); 274 free(blockmap); 275 free(statemap); 276 free((char *)lncntp); 277 if (!fsmodified) 278 return (0); 279 if (!preen) 280 printf("\n***** FILE SYSTEM WAS MODIFIED *****\n"); 281 if (rerun) 282 printf("\n***** PLEASE RERUN FSCK *****\n"); 283 if (hotroot()) { 284 struct statfs stfs_buf; 285 /* 286 * We modified the root. Do a mount update on 287 * it, unless it is read-write, so we can continue. 288 */ 289 if (statfs("/", &stfs_buf) == 0) { 290 long flags = stfs_buf.f_flags; 291 struct ufs_args args; 292 int ret; 293 294 if (flags & MNT_RDONLY) { 295 args.fspec = 0; 296 args.export.ex_flags = 0; 297 args.export.ex_root = 0; 298 flags |= MNT_UPDATE | MNT_RELOAD; 299 ret = mount(MOUNT_LFS, "/", flags, &args); 300 if (ret == 0) 301 return (0); 302 } 303 } 304 if (!preen) 305 printf("\n***** REBOOT NOW *****\n"); 306 sync(); 307 return (4); 308 } 309 return (0); 310 } 311 312 static void 313 usage() 314 { 315 extern char *__progname; 316 317 (void)fprintf(stderr, 318 "Usage: %s [-dnpy] [-b block] [-m mode] filesystem ...\n", 319 __progname); 320 exit(1); 321 } 322