1 /* 2 * Copyright (c) 1980, 1986, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #ifndef lint 35 static char copyright[] = 36 "@(#) Copyright (c) 1980, 1986, 1993\n\ 37 The Regents of the University of California. All rights reserved.\n"; 38 #endif /* not lint */ 39 40 #ifndef lint 41 static char sccsid[] = "@(#)main.c 8.2 (Berkeley) 1/23/94"; 42 #endif /* not lint */ 43 44 #include <sys/param.h> 45 #include <sys/time.h> 46 #include <sys/mount.h> 47 #include <ufs/ufs/dinode.h> 48 #include <ufs/ffs/fs.h> 49 #include <fstab.h> 50 #include <stdlib.h> 51 #include <string.h> 52 #include <ctype.h> 53 #include <stdio.h> 54 #include "fsck.h" 55 56 void catch(), catchquit(), voidquit(); 57 int returntosingle; 58 59 main(argc, argv) 60 int argc; 61 char *argv[]; 62 { 63 int ch; 64 int ret, maxrun = 0; 65 extern int docheck(), checkfilesys(); 66 extern char *optarg, *blockcheck(); 67 extern int optind; 68 69 sync(); 70 while ((ch = getopt(argc, argv, "dpnNyYb:c:l:m:")) != EOF) { 71 switch (ch) { 72 case 'p': 73 preen++; 74 break; 75 76 case 'b': 77 bflag = argtoi('b', "number", optarg, 10); 78 printf("Alternate super block location: %d\n", bflag); 79 break; 80 81 case 'c': 82 cvtlevel = argtoi('c', "conversion level", optarg, 10); 83 break; 84 85 case 'd': 86 debug++; 87 break; 88 89 case 'l': 90 maxrun = argtoi('l', "number", optarg, 10); 91 break; 92 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 case 'N': 102 nflag++; 103 yflag = 0; 104 break; 105 106 case 'y': 107 case 'Y': 108 yflag++; 109 nflag = 0; 110 break; 111 112 default: 113 errexit("%c option?\n", ch); 114 } 115 } 116 argc -= optind; 117 argv += optind; 118 if (signal(SIGINT, SIG_IGN) != SIG_IGN) 119 (void)signal(SIGINT, catch); 120 if (preen) 121 (void)signal(SIGQUIT, catchquit); 122 if (argc) { 123 while (argc-- > 0) 124 (void)checkfilesys(blockcheck(*argv++), 0, 0L, 0); 125 exit(0); 126 } 127 ret = checkfstab(preen, maxrun, docheck, checkfilesys); 128 if (returntosingle) 129 exit(2); 130 exit(ret); 131 } 132 133 argtoi(flag, req, str, base) 134 int flag; 135 char *req, *str; 136 int base; 137 { 138 char *cp; 139 int ret; 140 141 ret = (int)strtol(str, &cp, base); 142 if (cp == str || *cp) 143 errexit("-%c flag requires a %s\n", flag, req); 144 return (ret); 145 } 146 147 /* 148 * Determine whether a filesystem should be checked. 149 */ 150 docheck(fsp) 151 register struct fstab *fsp; 152 { 153 154 if (strcmp(fsp->fs_vfstype, "ufs") || 155 (strcmp(fsp->fs_type, FSTAB_RW) && 156 strcmp(fsp->fs_type, FSTAB_RO)) || 157 fsp->fs_passno == 0) 158 return (0); 159 return (1); 160 } 161 162 /* 163 * Check the specified filesystem. 164 */ 165 /* ARGSUSED */ 166 checkfilesys(filesys, mntpt, auxdata, child) 167 char *filesys, *mntpt; 168 long auxdata; 169 { 170 daddr_t n_ffree, n_bfree; 171 struct dups *dp; 172 struct zlncnt *zlnp; 173 int cylno; 174 175 if (preen && child) 176 (void)signal(SIGQUIT, voidquit); 177 cdevname = filesys; 178 if (debug && preen) 179 pwarn("starting\n"); 180 if (setup(filesys) == 0) { 181 if (preen) 182 pfatal("CAN'T CHECK FILE SYSTEM."); 183 return (0); 184 } 185 /* 186 * 1: scan inodes tallying blocks used 187 */ 188 if (preen == 0) { 189 printf("** Last Mounted on %s\n", sblock.fs_fsmnt); 190 if (hotroot) 191 printf("** Root file system\n"); 192 printf("** Phase 1 - Check Blocks and Sizes\n"); 193 } 194 pass1(); 195 196 /* 197 * 1b: locate first references to duplicates, if any 198 */ 199 if (duplist) { 200 if (preen) 201 pfatal("INTERNAL ERROR: dups with -p"); 202 printf("** Phase 1b - Rescan For More DUPS\n"); 203 pass1b(); 204 } 205 206 /* 207 * 2: traverse directories from root to mark all connected directories 208 */ 209 if (preen == 0) 210 printf("** Phase 2 - Check Pathnames\n"); 211 pass2(); 212 213 /* 214 * 3: scan inodes looking for disconnected directories 215 */ 216 if (preen == 0) 217 printf("** Phase 3 - Check Connectivity\n"); 218 pass3(); 219 220 /* 221 * 4: scan inodes looking for disconnected files; check reference counts 222 */ 223 if (preen == 0) 224 printf("** Phase 4 - Check Reference Counts\n"); 225 pass4(); 226 227 /* 228 * 5: check and repair resource counts in cylinder groups 229 */ 230 if (preen == 0) 231 printf("** Phase 5 - Check Cyl groups\n"); 232 pass5(); 233 234 /* 235 * print out summary statistics 236 */ 237 n_ffree = sblock.fs_cstotal.cs_nffree; 238 n_bfree = sblock.fs_cstotal.cs_nbfree; 239 pwarn("%ld files, %ld used, %ld free ", 240 n_files, n_blks, n_ffree + sblock.fs_frag * n_bfree); 241 printf("(%ld frags, %ld blocks, %d.%d%% fragmentation)\n", 242 n_ffree, n_bfree, (n_ffree * 100) / sblock.fs_dsize, 243 ((n_ffree * 1000 + sblock.fs_dsize / 2) / sblock.fs_dsize) % 10); 244 if (debug && 245 (n_files -= maxino - ROOTINO - sblock.fs_cstotal.cs_nifree)) 246 printf("%ld files missing\n", n_files); 247 if (debug) { 248 n_blks += sblock.fs_ncg * 249 (cgdmin(&sblock, 0) - cgsblock(&sblock, 0)); 250 n_blks += cgsblock(&sblock, 0) - cgbase(&sblock, 0); 251 n_blks += howmany(sblock.fs_cssize, sblock.fs_fsize); 252 if (n_blks -= maxfsblock - (n_ffree + sblock.fs_frag * n_bfree)) 253 printf("%ld blocks missing\n", n_blks); 254 if (duplist != NULL) { 255 printf("The following duplicate blocks remain:"); 256 for (dp = duplist; dp; dp = dp->next) 257 printf(" %ld,", dp->dup); 258 printf("\n"); 259 } 260 if (zlnhead != NULL) { 261 printf("The following zero link count inodes remain:"); 262 for (zlnp = zlnhead; zlnp; zlnp = zlnp->next) 263 printf(" %lu,", zlnp->zlncnt); 264 printf("\n"); 265 } 266 } 267 zlnhead = (struct zlncnt *)0; 268 duplist = (struct dups *)0; 269 muldup = (struct dups *)0; 270 inocleanup(); 271 if (fsmodified) { 272 (void)time(&sblock.fs_time); 273 sbdirty(); 274 } 275 if (cvtlevel && sblk.b_dirty) { 276 /* 277 * Write out the duplicate super blocks 278 */ 279 for (cylno = 0; cylno < sblock.fs_ncg; cylno++) 280 bwrite(fswritefd, (char *)&sblock, 281 fsbtodb(&sblock, cgsblock(&sblock, cylno)), SBSIZE); 282 } 283 ckfini(); 284 free(blockmap); 285 free(statemap); 286 free((char *)lncntp); 287 if (!fsmodified) 288 return (0); 289 if (!preen) 290 printf("\n***** FILE SYSTEM WAS MODIFIED *****\n"); 291 if (hotroot) { 292 struct statfs stfs_buf; 293 /* 294 * We modified the root. Do a mount update on 295 * it, unless it is read-write, so we can continue. 296 */ 297 if (statfs("/", &stfs_buf) == 0) { 298 long flags = stfs_buf.f_flags; 299 struct ufs_args args; 300 int ret; 301 302 if (flags & MNT_RDONLY) { 303 args.fspec = 0; 304 args.export.ex_flags = 0; 305 args.export.ex_root = 0; 306 flags |= MNT_UPDATE | MNT_RELOAD; 307 ret = mount(MOUNT_UFS, "/", flags, &args); 308 if (ret == 0) 309 return(0); 310 } 311 } 312 if (!preen) 313 printf("\n***** REBOOT NOW *****\n"); 314 sync(); 315 return (4); 316 } 317 return (0); 318 } 319