1 /* $NetBSD: main.c,v 1.23 1996/10/22 16:35:04 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. 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 #ifndef lint 37 static char copyright[] = 38 "@(#) Copyright (c) 1980, 1986, 1993\n\ 39 The Regents of the University of California. All rights reserved.\n"; 40 #endif /* not lint */ 41 42 #ifndef lint 43 #if 0 44 static char sccsid[] = "@(#)main.c 8.2 (Berkeley) 1/23/94"; 45 #else 46 static char rcsid[] = "$NetBSD: main.c,v 1.23 1996/10/22 16:35:04 christos Exp $"; 47 #endif 48 #endif /* not lint */ 49 50 #include <sys/param.h> 51 #include <sys/time.h> 52 #include <sys/mount.h> 53 #include <ufs/ufs/dinode.h> 54 #include <ufs/ffs/fs.h> 55 #include <fstab.h> 56 #include <stdlib.h> 57 #include <string.h> 58 #include <ctype.h> 59 #include <stdio.h> 60 #include <unistd.h> 61 62 #include "fsck.h" 63 #include "extern.h" 64 #include "fsutil.h" 65 66 int returntosingle; 67 68 int main __P((int, char *[])); 69 70 static int argtoi __P((int, char *, char *, int)); 71 static int checkfilesys __P((char *, char *, long, int)); 72 static int docheck __P((struct fstab *)); 73 static void usage __P((void)); 74 75 76 int 77 main(argc, argv) 78 int argc; 79 char *argv[]; 80 { 81 int ch; 82 int ret = 0; 83 extern char *optarg; 84 extern int optind; 85 86 sync(); 87 skipclean = 1; 88 while ((ch = getopt(argc, argv, "b:c:dfm:npy")) != EOF) { 89 switch (ch) { 90 case 'b': 91 skipclean = 0; 92 bflag = argtoi('b', "number", optarg, 10); 93 printf("Alternate super block location: %d\n", bflag); 94 break; 95 96 case 'c': 97 skipclean = 0; 98 cvtlevel = argtoi('c', "conversion level", optarg, 10); 99 break; 100 101 case 'd': 102 debug++; 103 break; 104 105 case 'f': 106 skipclean = 0; 107 break; 108 109 case 'm': 110 lfmode = argtoi('m', "mode", optarg, 8); 111 if (lfmode &~ 07777) 112 errexit("bad mode to -m: %o\n", lfmode); 113 printf("** lost+found creation mode %o\n", lfmode); 114 break; 115 116 case 'n': 117 nflag++; 118 yflag = 0; 119 break; 120 121 case 'p': 122 preen++; 123 break; 124 125 case 'y': 126 yflag++; 127 nflag = 0; 128 break; 129 130 default: 131 usage(); 132 } 133 } 134 135 argc -= optind; 136 argv += optind; 137 138 if (!argc) 139 usage(); 140 141 if (signal(SIGINT, SIG_IGN) != SIG_IGN) 142 (void)signal(SIGINT, catch); 143 if (preen) 144 (void)signal(SIGQUIT, catchquit); 145 146 while (argc-- > 0) 147 (void)checkfilesys(blockcheck(*argv++), 0, 0L, 0); 148 149 if (returntosingle) 150 ret = 2; 151 152 exit(ret); 153 } 154 155 static int 156 argtoi(flag, req, str, base) 157 int flag; 158 char *req, *str; 159 int base; 160 { 161 char *cp; 162 int ret; 163 164 ret = (int)strtol(str, &cp, base); 165 if (cp == str || *cp) 166 errexit("-%c flag requires a %s\n", flag, req); 167 return (ret); 168 } 169 170 /* 171 * Determine whether a filesystem should be checked. 172 */ 173 static int 174 docheck(fsp) 175 register struct fstab *fsp; 176 { 177 178 if ((strcmp(fsp->fs_vfstype, "ufs") && 179 strcmp(fsp->fs_vfstype, "ffs")) || 180 (strcmp(fsp->fs_type, FSTAB_RW) && 181 strcmp(fsp->fs_type, FSTAB_RO)) || 182 fsp->fs_passno == 0) 183 return (0); 184 return (1); 185 } 186 187 /* 188 * Check the specified filesystem. 189 */ 190 /* ARGSUSED */ 191 static int 192 checkfilesys(filesys, mntpt, auxdata, child) 193 char *filesys, *mntpt; 194 long auxdata; 195 int child; 196 { 197 daddr_t n_ffree, n_bfree; 198 struct dups *dp; 199 struct zlncnt *zlnp; 200 int cylno; 201 202 if (preen && child) 203 (void)signal(SIGQUIT, voidquit); 204 setcdevname(filesys, preen); 205 if (debug && preen) 206 pwarn("starting\n"); 207 switch (setup(filesys)) { 208 case 0: 209 if (preen) 210 pfatal("CAN'T CHECK FILE SYSTEM."); 211 case -1: 212 return (0); 213 } 214 /* 215 * 1: scan inodes tallying blocks used 216 */ 217 if (preen == 0) { 218 printf("** Last Mounted on %s\n", sblock.fs_fsmnt); 219 if (hotroot()) 220 printf("** Root file system\n"); 221 printf("** Phase 1 - Check Blocks and Sizes\n"); 222 } 223 pass1(); 224 225 /* 226 * 1b: locate first references to duplicates, if any 227 */ 228 if (duplist) { 229 if (preen) 230 pfatal("INTERNAL ERROR: dups with -p"); 231 printf("** Phase 1b - Rescan For More DUPS\n"); 232 pass1b(); 233 } 234 235 /* 236 * 2: traverse directories from root to mark all connected directories 237 */ 238 if (preen == 0) 239 printf("** Phase 2 - Check Pathnames\n"); 240 pass2(); 241 242 /* 243 * 3: scan inodes looking for disconnected directories 244 */ 245 if (preen == 0) 246 printf("** Phase 3 - Check Connectivity\n"); 247 pass3(); 248 249 /* 250 * 4: scan inodes looking for disconnected files; check reference counts 251 */ 252 if (preen == 0) 253 printf("** Phase 4 - Check Reference Counts\n"); 254 pass4(); 255 256 /* 257 * 5: check and repair resource counts in cylinder groups 258 */ 259 if (preen == 0) 260 printf("** Phase 5 - Check Cyl groups\n"); 261 pass5(); 262 263 /* 264 * print out summary statistics 265 */ 266 n_ffree = sblock.fs_cstotal.cs_nffree; 267 n_bfree = sblock.fs_cstotal.cs_nbfree; 268 pwarn("%d files, %d used, %d free ", 269 n_files, n_blks, n_ffree + sblock.fs_frag * n_bfree); 270 printf("(%d frags, %d blocks, %d.%d%% fragmentation)\n", 271 n_ffree, n_bfree, (n_ffree * 100) / sblock.fs_dsize, 272 ((n_ffree * 1000 + sblock.fs_dsize / 2) / sblock.fs_dsize) % 10); 273 if (debug && 274 (n_files -= maxino - ROOTINO - sblock.fs_cstotal.cs_nifree)) 275 printf("%d files missing\n", n_files); 276 if (debug) { 277 n_blks += sblock.fs_ncg * 278 (cgdmin(&sblock, 0) - cgsblock(&sblock, 0)); 279 n_blks += cgsblock(&sblock, 0) - cgbase(&sblock, 0); 280 n_blks += howmany(sblock.fs_cssize, sblock.fs_fsize); 281 if (n_blks -= maxfsblock - (n_ffree + sblock.fs_frag * n_bfree)) 282 printf("%d blocks missing\n", n_blks); 283 if (duplist != NULL) { 284 printf("The following duplicate blocks remain:"); 285 for (dp = duplist; dp; dp = dp->next) 286 printf(" %d,", dp->dup); 287 printf("\n"); 288 } 289 if (zlnhead != NULL) { 290 printf("The following zero link count inodes remain:"); 291 for (zlnp = zlnhead; zlnp; zlnp = zlnp->next) 292 printf(" %u,", zlnp->zlncnt); 293 printf("\n"); 294 } 295 } 296 zlnhead = (struct zlncnt *)0; 297 duplist = (struct dups *)0; 298 muldup = (struct dups *)0; 299 inocleanup(); 300 if (fsmodified) { 301 (void)time(&sblock.fs_time); 302 sbdirty(); 303 } 304 if (cvtlevel && sblk.b_dirty) { 305 /* 306 * Write out the duplicate super blocks 307 */ 308 for (cylno = 0; cylno < sblock.fs_ncg; cylno++) 309 bwrite(fswritefd, (char *)&sblock, 310 fsbtodb(&sblock, cgsblock(&sblock, cylno)), SBSIZE); 311 } 312 ckfini(1); 313 free(blockmap); 314 free(statemap); 315 free((char *)lncntp); 316 if (!fsmodified) 317 return (0); 318 if (!preen) 319 printf("\n***** FILE SYSTEM WAS MODIFIED *****\n"); 320 if (rerun) 321 printf("\n***** PLEASE RERUN FSCK *****\n"); 322 if (hotroot()) { 323 struct statfs stfs_buf; 324 /* 325 * We modified the root. Do a mount update on 326 * it, unless it is read-write, so we can continue. 327 */ 328 if (statfs("/", &stfs_buf) == 0) { 329 long flags = stfs_buf.f_flags; 330 struct ufs_args args; 331 int ret; 332 333 if (flags & MNT_RDONLY) { 334 args.fspec = 0; 335 args.export.ex_flags = 0; 336 args.export.ex_root = 0; 337 flags |= MNT_UPDATE | MNT_RELOAD; 338 ret = mount(MOUNT_FFS, "/", flags, &args); 339 if (ret == 0) 340 return(0); 341 } 342 } 343 if (!preen) 344 printf("\n***** REBOOT NOW *****\n"); 345 sync(); 346 return (4); 347 } 348 return (0); 349 } 350 351 static void 352 usage() 353 { 354 extern char *__progname; 355 356 (void) fprintf(stderr, 357 "Usage: %s [-dfnpy] [-b block] [-c level] [-m mode] filesystem ...\n", 358 __progname); 359 exit(1); 360 } 361 362