main.c revision 1.3
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 35char 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 41static char sccsid[] = "@(#)main.c 5.27 (Berkeley) 8/7/90"; 42static char rcsid[] = "$Header: /usr/local/opengrok/home/cvs-mirror/mirrors/netbsd/src/sbin/fsck_ffs/main.c,v 1.3 1993/03/23 00:27:55 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 55void catch(), catchquit(), voidquit(); 56int returntosingle; 57 58main(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 132argtoi(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 */ 149docheck(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 */ 165checkfilesys(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; 172 173 if (preen && child) 174 (void)signal(SIGQUIT, voidquit); 175 devname = filesys; 176 if (debug && preen) 177 pwarn("starting\n"); 178 if (setup(filesys) == 0) { 179 if (preen) 180 pfatal("CAN'T CHECK FILE SYSTEM."); 181 return (0); 182 } 183 /* 184 * 1: scan inodes tallying blocks used 185 */ 186 if (preen == 0) { 187 printf("** Last Mounted on %s\n", sblock.fs_fsmnt); 188 if (hotroot) 189 printf("** Root file system\n"); 190 printf("** Phase 1 - Check Blocks and Sizes\n"); 191 } 192 pass1(); 193 194 /* 195 * 1b: locate first references to duplicates, if any 196 */ 197 if (duplist) { 198 if (preen) 199 pfatal("INTERNAL ERROR: dups with -p"); 200 printf("** Phase 1b - Rescan For More DUPS\n"); 201 pass1b(); 202 } 203 204 /* 205 * 2: traverse directories from root to mark all connected directories 206 */ 207 if (preen == 0) 208 printf("** Phase 2 - Check Pathnames\n"); 209 pass2(); 210 211 /* 212 * 3: scan inodes looking for disconnected directories 213 */ 214 if (preen == 0) 215 printf("** Phase 3 - Check Connectivity\n"); 216 pass3(); 217 218 /* 219 * 4: scan inodes looking for disconnected files; check reference counts 220 */ 221 if (preen == 0) 222 printf("** Phase 4 - Check Reference Counts\n"); 223 pass4(); 224 225 /* 226 * 5: check and repair resource counts in cylinder groups 227 */ 228 if (preen == 0) 229 printf("** Phase 5 - Check Cyl groups\n"); 230 pass5(); 231 232 /* 233 * print out summary statistics 234 */ 235 n_ffree = sblock.fs_cstotal.cs_nffree; 236 n_bfree = sblock.fs_cstotal.cs_nbfree; 237 pwarn("%ld files, %ld used, %ld free ", 238 n_files, n_blks, n_ffree + sblock.fs_frag * n_bfree); 239 printf("(%ld frags, %ld blocks, %.1f%% fragmentation)\n", 240 n_ffree, n_bfree, (float)(n_ffree * 100) / sblock.fs_dsize); 241 if (debug && 242 (n_files -= maxino - ROOTINO - sblock.fs_cstotal.cs_nifree)) 243 printf("%ld files missing\n", n_files); 244 if (debug) { 245 n_blks += sblock.fs_ncg * 246 (cgdmin(&sblock, 0) - cgsblock(&sblock, 0)); 247 n_blks += cgsblock(&sblock, 0) - cgbase(&sblock, 0); 248 n_blks += howmany(sblock.fs_cssize, sblock.fs_fsize); 249 if (n_blks -= maxfsblock - (n_ffree + sblock.fs_frag * n_bfree)) 250 printf("%ld blocks missing\n", n_blks); 251 if (duplist != NULL) { 252 printf("The following duplicate blocks remain:"); 253 for (dp = duplist; dp; dp = dp->next) 254 printf(" %ld,", dp->dup); 255 printf("\n"); 256 } 257 if (zlnhead != NULL) { 258 printf("The following zero link count inodes remain:"); 259 for (zlnp = zlnhead; zlnp; zlnp = zlnp->next) 260 printf(" %lu,", zlnp->zlncnt); 261 printf("\n"); 262 } 263 } 264 zlnhead = (struct zlncnt *)0; 265 duplist = (struct dups *)0; 266 inocleanup(); 267 if (fsmodified) { 268 (void)time(&sblock.fs_time); 269 sbdirty(); 270 } 271 ckfini(); 272 free(blockmap); 273 free(statemap); 274 free((char *)lncntp); 275 if (!fsmodified) 276 return (0); 277 if (!preen) { 278 printf("\n***** FILE SYSTEM WAS MODIFIED *****\n"); 279 if (hotroot) 280 printf("\n***** REBOOT UNIX *****\n"); 281 } 282 if (hotroot) { 283 sync(); 284 return (4); 285 } 286 return (0); 287} 288