1 /* $NetBSD: main.c,v 1.19 1995/11/28 05:25:28 jtc 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 1.19 1995/11/28 05:25:28 jtc 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 65 void catch(), catchquit(), voidquit(); 66 int returntosingle; 67 int argtoi __P((int, char *, char *, int)); 68 int checkfilesys __P((char *, char *, long, int)); 69 int docheck __P((struct fstab *)); 70 71 int 72 main(argc, argv) 73 int argc; 74 char *argv[]; 75 { 76 int ch; 77 int ret, maxrun = 0; 78 extern char *optarg, *blockcheck(); 79 extern int optind; 80 81 sync(); 82 skipclean = 1; 83 while ((ch = getopt(argc, argv, "dfpnNyYb:c:l:m:")) != EOF) { 84 switch (ch) { 85 case 'p': 86 preen++; 87 break; 88 89 case 'b': 90 skipclean = 0; 91 bflag = argtoi('b', "number", optarg, 10); 92 printf("Alternate super block location: %d\n", bflag); 93 break; 94 95 case 'c': 96 skipclean = 0; 97 cvtlevel = argtoi('c', "conversion level", optarg, 10); 98 break; 99 100 case 'd': 101 debug++; 102 break; 103 104 case 'f': 105 skipclean = 0; 106 break; 107 108 case 'l': 109 maxrun = argtoi('l', "number", optarg, 10); 110 break; 111 112 case 'm': 113 lfmode = argtoi('m', "mode", optarg, 8); 114 if (lfmode &~ 07777) 115 errexit("bad mode to -m: %o\n", lfmode); 116 printf("** lost+found creation mode %o\n", lfmode); 117 break; 118 119 case 'n': 120 case 'N': 121 nflag++; 122 yflag = 0; 123 break; 124 125 case 'y': 126 case 'Y': 127 yflag++; 128 nflag = 0; 129 break; 130 131 default: 132 errexit("%c option?\n", ch); 133 } 134 } 135 argc -= optind; 136 argv += optind; 137 if (signal(SIGINT, SIG_IGN) != SIG_IGN) 138 (void)signal(SIGINT, catch); 139 if (preen) 140 (void)signal(SIGQUIT, catchquit); 141 if (argc) { 142 while (argc-- > 0) 143 (void)checkfilesys(blockcheck(*argv++), 0, 0L, 0); 144 exit(0); 145 } 146 ret = checkfstab(preen, maxrun, docheck, checkfilesys); 147 if (returntosingle) 148 exit(2); 149 exit(ret); 150 } 151 152 int 153 argtoi(flag, req, str, base) 154 int flag; 155 char *req, *str; 156 int base; 157 { 158 char *cp; 159 int ret; 160 161 ret = (int)strtol(str, &cp, base); 162 if (cp == str || *cp) 163 errexit("-%c flag requires a %s\n", flag, req); 164 return (ret); 165 } 166 167 /* 168 * Determine whether a filesystem should be checked. 169 */ 170 int 171 docheck(fsp) 172 register struct fstab *fsp; 173 { 174 175 if ((strcmp(fsp->fs_vfstype, "ufs") && 176 strcmp(fsp->fs_vfstype, "ffs")) || 177 (strcmp(fsp->fs_type, FSTAB_RW) && 178 strcmp(fsp->fs_type, FSTAB_RO)) || 179 fsp->fs_passno == 0) 180 return (0); 181 return (1); 182 } 183 184 /* 185 * Check the specified filesystem. 186 */ 187 /* ARGSUSED */ 188 int 189 checkfilesys(filesys, mntpt, auxdata, child) 190 char *filesys, *mntpt; 191 long auxdata; 192 int child; 193 { 194 daddr_t n_ffree, n_bfree; 195 struct dups *dp; 196 struct zlncnt *zlnp; 197 int cylno; 198 199 if (preen && child) 200 (void)signal(SIGQUIT, voidquit); 201 cdevname = filesys; 202 if (debug && preen) 203 pwarn("starting\n"); 204 switch (setup(filesys)) { 205 case 0: 206 if (preen) 207 pfatal("CAN'T CHECK FILE SYSTEM."); 208 case -1: 209 return (0); 210 } 211 /* 212 * 1: scan inodes tallying blocks used 213 */ 214 if (preen == 0) { 215 printf("** Last Mounted on %s\n", sblock.fs_fsmnt); 216 if (hotroot) 217 printf("** Root file system\n"); 218 printf("** Phase 1 - Check Blocks and Sizes\n"); 219 } 220 pass1(); 221 222 /* 223 * 1b: locate first references to duplicates, if any 224 */ 225 if (duplist) { 226 if (preen) 227 pfatal("INTERNAL ERROR: dups with -p"); 228 printf("** Phase 1b - Rescan For More DUPS\n"); 229 pass1b(); 230 } 231 232 /* 233 * 2: traverse directories from root to mark all connected directories 234 */ 235 if (preen == 0) 236 printf("** Phase 2 - Check Pathnames\n"); 237 pass2(); 238 239 /* 240 * 3: scan inodes looking for disconnected directories 241 */ 242 if (preen == 0) 243 printf("** Phase 3 - Check Connectivity\n"); 244 pass3(); 245 246 /* 247 * 4: scan inodes looking for disconnected files; check reference counts 248 */ 249 if (preen == 0) 250 printf("** Phase 4 - Check Reference Counts\n"); 251 pass4(); 252 253 /* 254 * 5: check and repair resource counts in cylinder groups 255 */ 256 if (preen == 0) 257 printf("** Phase 5 - Check Cyl groups\n"); 258 pass5(); 259 260 /* 261 * print out summary statistics 262 */ 263 n_ffree = sblock.fs_cstotal.cs_nffree; 264 n_bfree = sblock.fs_cstotal.cs_nbfree; 265 pwarn("%ld files, %ld used, %ld free ", 266 n_files, n_blks, n_ffree + sblock.fs_frag * n_bfree); 267 printf("(%ld frags, %ld blocks, %d.%d%% fragmentation)\n", 268 n_ffree, n_bfree, (n_ffree * 100) / sblock.fs_dsize, 269 ((n_ffree * 1000 + sblock.fs_dsize / 2) / sblock.fs_dsize) % 10); 270 if (debug && 271 (n_files -= maxino - ROOTINO - sblock.fs_cstotal.cs_nifree)) 272 printf("%ld files missing\n", n_files); 273 if (debug) { 274 n_blks += sblock.fs_ncg * 275 (cgdmin(&sblock, 0) - cgsblock(&sblock, 0)); 276 n_blks += cgsblock(&sblock, 0) - cgbase(&sblock, 0); 277 n_blks += howmany(sblock.fs_cssize, sblock.fs_fsize); 278 if (n_blks -= maxfsblock - (n_ffree + sblock.fs_frag * n_bfree)) 279 printf("%ld blocks missing\n", n_blks); 280 if (duplist != NULL) { 281 printf("The following duplicate blocks remain:"); 282 for (dp = duplist; dp; dp = dp->next) 283 printf(" %ld,", dp->dup); 284 printf("\n"); 285 } 286 if (zlnhead != NULL) { 287 printf("The following zero link count inodes remain:"); 288 for (zlnp = zlnhead; zlnp; zlnp = zlnp->next) 289 printf(" %lu,", zlnp->zlncnt); 290 printf("\n"); 291 } 292 } 293 zlnhead = (struct zlncnt *)0; 294 duplist = (struct dups *)0; 295 muldup = (struct dups *)0; 296 inocleanup(); 297 if (fsmodified) { 298 (void)time(&sblock.fs_time); 299 sbdirty(); 300 } 301 if (cvtlevel && sblk.b_dirty) { 302 /* 303 * Write out the duplicate super blocks 304 */ 305 for (cylno = 0; cylno < sblock.fs_ncg; cylno++) 306 bwrite(fswritefd, (char *)&sblock, 307 fsbtodb(&sblock, cgsblock(&sblock, cylno)), SBSIZE); 308 } 309 ckfini(1); 310 free(blockmap); 311 free(statemap); 312 free((char *)lncntp); 313 if (!fsmodified) 314 return (0); 315 if (!preen) 316 printf("\n***** FILE SYSTEM WAS MODIFIED *****\n"); 317 if (hotroot) { 318 struct statfs stfs_buf; 319 /* 320 * We modified the root. Do a mount update on 321 * it, unless it is read-write, so we can continue. 322 */ 323 if (statfs("/", &stfs_buf) == 0) { 324 long flags = stfs_buf.f_flags; 325 struct ufs_args args; 326 int ret; 327 328 if (flags & MNT_RDONLY) { 329 args.fspec = 0; 330 args.export.ex_flags = 0; 331 args.export.ex_root = 0; 332 flags |= MNT_UPDATE | MNT_RELOAD; 333 ret = mount(MOUNT_FFS, "/", flags, &args); 334 if (ret == 0) 335 return(0); 336 } 337 } 338 if (!preen) 339 printf("\n***** REBOOT NOW *****\n"); 340 sync(); 341 return (4); 342 } 343 return (0); 344 } 345