1 /* 2 * Copyright (c) 1980, 1986 The Regents of the University of California. 3 * 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 char copyright[] = 36 "@(#) Copyright (c) 1980, 1986 The Regents of the University of California.\n\ 37 All rights reserved.\n"; 38 #endif /* not lint */ 39 40 #ifndef lint 41 /*static char sccsid[] = "from: @(#)main.c 5.27 (Berkeley) 8/7/90";*/ 42 static char rcsid[] = "$Id: main.c,v 1.9 1993/10/06 00:52:07 cgd Exp $"; 43 #endif /* not lint */ 44 45 #include <sys/param.h> 46 #include <ufs/dinode.h> 47 #include <ufs/fs.h> 48 #include <fstab.h> 49 #include <stdlib.h> 50 #include <string.h> 51 #include <ctype.h> 52 #include <stdio.h> 53 #include "fsck.h" 54 55 void catch(), catchquit(), voidquit(); 56 int returntosingle; 57 58 main(argc, argv) 59 int argc; 60 char *argv[]; 61 { 62 int ch; 63 int ret, maxrun = 0; 64 extern int docheck(), checkfilesys(); 65 extern char *optarg; 66 extern int optind; 67 68 sync(); 69 while ((ch = getopt(argc, argv, "cdpnNyYb:l:m:")) != EOF) { 70 switch (ch) { 71 case 'p': 72 preen++; 73 break; 74 75 case 'b': 76 bflag = argtoi('b', "number", optarg, 10); 77 printf("Alternate super block location: %d\n", bflag); 78 break; 79 80 case 'c': 81 cvtflag++; 82 break; 83 84 case 'd': 85 debug++; 86 break; 87 88 case 'l': 89 maxrun = argtoi('l', "number", optarg, 10); 90 break; 91 92 case 'm': 93 lfmode = argtoi('m', "mode", optarg, 8); 94 if (lfmode &~ 07777) 95 errexit("bad mode to -m: %o\n", lfmode); 96 printf("** lost+found creation mode %o\n", lfmode); 97 break; 98 99 case 'n': 100 case 'N': 101 nflag++; 102 yflag = 0; 103 break; 104 105 case 'y': 106 case 'Y': 107 yflag++; 108 nflag = 0; 109 break; 110 111 default: 112 errexit("%c option?\n", ch); 113 } 114 } 115 argc -= optind; 116 argv += optind; 117 if (signal(SIGINT, SIG_IGN) != SIG_IGN) 118 (void)signal(SIGINT, catch); 119 if (preen) 120 (void)signal(SIGQUIT, catchquit); 121 if (argc) { 122 while (argc-- > 0) 123 (void)checkfilesys(*argv++, (char *)0, 0L, 0); 124 exit(0); 125 } 126 ret = checkfstab(preen, maxrun, docheck, checkfilesys); 127 if (returntosingle) 128 exit(2); 129 exit(ret); 130 } 131 132 argtoi(flag, req, str, base) 133 int flag; 134 char *req, *str; 135 int base; 136 { 137 char *cp; 138 int ret; 139 140 ret = (int)strtol(str, &cp, base); 141 if (cp == str || *cp) 142 errexit("-%c flag requires a %s\n", flag, req); 143 return (ret); 144 } 145 146 /* 147 * Determine whether a filesystem should be checked. 148 */ 149 docheck(fsp) 150 register struct fstab *fsp; 151 { 152 153 if (strcmp(fsp->fs_vfstype, "ufs") || 154 (strcmp(fsp->fs_type, FSTAB_RW) && 155 strcmp(fsp->fs_type, FSTAB_RO)) || 156 fsp->fs_passno == 0) 157 return (0); 158 return (1); 159 } 160 161 /* 162 * Check the specified filesystem. 163 */ 164 /* ARGSUSED */ 165 checkfilesys(filesys, mntpt, auxdata, child) 166 char *filesys, *mntpt; 167 long auxdata; 168 { 169 daddr_t n_ffree, n_bfree; 170 struct dups *dp; 171 struct zlncnt *zlnp; 172 int clean; 173 174 if (preen && child) 175 (void)signal(SIGQUIT, voidquit); 176 devname = filesys; 177 if (debug && preen) 178 pwarn("starting\n"); 179 if (setup(filesys) == 0) { 180 if (preen) 181 pfatal("CAN'T CHECK FILE SYSTEM."); 182 return (0); 183 } 184 185 /* 186 * 0: check whether file system is already clean 187 */ 188 clean = preen && (sblock.fs_state == FSOKAY) && sblock.fs_clean; 189 190 #ifdef notyet 191 if (clean) { 192 #else 193 if (0) { 194 #endif 195 printf("** filesystem clean -- skipping checks\n"); 196 } else { 197 /* 198 * 1: scan inodes tallying blocks used 199 */ 200 if (preen == 0) { 201 printf("** Last Mounted on %s\n", sblock.fs_fsmnt); 202 if (hotroot) 203 printf("** Root file system\n"); 204 printf("** Phase 1 - Check Blocks and Sizes\n"); 205 } 206 pass1(); 207 208 /* 209 * 1b: locate first references to duplicates, if any 210 */ 211 if (duplist) { 212 if (preen) 213 pfatal("INTERNAL ERROR: dups with -p"); 214 printf("** Phase 1b - Rescan For More DUPS\n"); 215 pass1b(); 216 } 217 218 /* 219 * 2: traverse directories from root to mark all connected 220 * directories 221 */ 222 if (preen == 0) 223 printf("** Phase 2 - Check Pathnames\n"); 224 pass2(); 225 226 /* 227 * 3: scan inodes looking for disconnected directories 228 */ 229 if (preen == 0) 230 printf("** Phase 3 - Check Connectivity\n"); 231 pass3(); 232 233 /* 234 * 4: scan inodes looking for disconnected files; check 235 * reference counts 236 */ 237 if (preen == 0) 238 printf("** Phase 4 - Check Reference Counts\n"); 239 pass4(); 240 241 /* 242 * 5: check and repair resource counts in cylinder groups 243 */ 244 if (preen == 0) 245 printf("** Phase 5 - Check Cyl groups\n"); 246 pass5(); 247 } 248 249 /* 250 * print out summary statistics 251 */ 252 n_ffree = sblock.fs_cstotal.cs_nffree; 253 n_bfree = sblock.fs_cstotal.cs_nbfree; 254 pwarn("%ld files, %ld used, %ld free ", 255 n_files, n_blks, n_ffree + sblock.fs_frag * n_bfree); 256 printf("(%ld frags, %ld blocks, %.1f%% fragmentation)\n", 257 n_ffree, n_bfree, (float)(n_ffree * 100) / sblock.fs_dsize); 258 if (debug && 259 (n_files -= maxino - ROOTINO - sblock.fs_cstotal.cs_nifree)) 260 printf("%ld files missing\n", n_files); 261 if (debug) { 262 n_blks += sblock.fs_ncg * 263 (cgdmin(&sblock, 0) - cgsblock(&sblock, 0)); 264 n_blks += cgsblock(&sblock, 0) - cgbase(&sblock, 0); 265 n_blks += howmany(sblock.fs_cssize, sblock.fs_fsize); 266 if (n_blks -= maxfsblock - (n_ffree + sblock.fs_frag * n_bfree)) 267 printf("%ld blocks missing\n", n_blks); 268 if (duplist != NULL) { 269 printf("The following duplicate blocks remain:"); 270 for (dp = duplist; dp; dp = dp->next) 271 printf(" %ld,", dp->dup); 272 printf("\n"); 273 } 274 if (zlnhead != NULL) { 275 printf("The following zero link count inodes remain:"); 276 for (zlnp = zlnhead; zlnp; zlnp = zlnp->next) 277 printf(" %lu,", zlnp->zlncnt); 278 printf("\n"); 279 } 280 } 281 zlnhead = (struct zlncnt *)0; 282 duplist = (struct dups *)0; 283 inocleanup(); 284 if (!clean && !nflag && fswritefd != -1) { 285 sblock.fs_state = FSOKAY; 286 sblock.fs_clean = FS_CLEANFREQ; 287 fsmodified = 1; 288 } 289 if (fsmodified) { 290 (void)time(&sblock.fs_time); 291 sbdirty(); 292 } 293 ckfini(); 294 free(blockmap); 295 free(statemap); 296 free((char *)lncntp); 297 if (!fsmodified) 298 return (0); 299 if (!preen) { 300 printf("\n***** FILE SYSTEM WAS MODIFIED *****\n"); 301 if (hotroot) 302 printf("\n***** REBOOT UNIX *****\n"); 303 } 304 if (hotroot) { 305 sync(); 306 return (4); 307 } 308 return (0); 309 } 310