1 /* $NetBSD: main.c,v 1.3 1997/10/01 02:15:48 enami Exp $ */ 2 3 /* 4 * Copyright (c) 1997 Manuel Bouyer. 5 * Copyright (c) 1980, 1986, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 */ 36 37 #include <sys/cdefs.h> 38 #ifndef lint 39 __COPYRIGHT("@(#) Copyright (c) 1980, 1986, 1993\n\ 40 The Regents of the University of California. All rights reserved.\n"); 41 #endif /* not lint */ 42 43 #ifndef lint 44 #if 0 45 static char sccsid[] = "@(#)main.c 8.2 (Berkeley) 1/23/94"; 46 #else 47 __RCSID("$NetBSD: main.c,v 1.3 1997/10/01 02:15:48 enami Exp $"); 48 #endif 49 #endif /* not lint */ 50 51 #include <sys/param.h> 52 #include <sys/time.h> 53 #include <sys/mount.h> 54 #include <ufs/ext2fs/ext2fs_dinode.h> 55 #include <ufs/ext2fs/ext2fs.h> 56 #include <fstab.h> 57 #include <stdlib.h> 58 #include <string.h> 59 #include <ctype.h> 60 #include <stdio.h> 61 #include <unistd.h> 62 63 #include "fsck.h" 64 #include "extern.h" 65 #include "fsutil.h" 66 67 int returntosingle; 68 69 int main __P((int, char *[])); 70 71 static int argtoi __P((int, char *, char *, int)); 72 static int checkfilesys __P((char *, char *, long, int)); 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 84 sync(); 85 skipclean = 1; 86 while ((ch = getopt(argc, argv, "b:c:dfm:npy")) != -1) { 87 switch (ch) { 88 case 'b': 89 skipclean = 0; 90 bflag = argtoi('b', "number", optarg, 10); 91 printf("Alternate super block location: %d\n", bflag); 92 break; 93 94 case 'd': 95 debug++; 96 break; 97 98 case 'f': 99 skipclean = 0; 100 break; 101 102 case 'm': 103 lfmode = argtoi('m', "mode", optarg, 8); 104 if (lfmode &~ 07777) 105 errexit("bad mode to -m: %o\n", lfmode); 106 printf("** lost+found creation mode %o\n", lfmode); 107 break; 108 109 case 'n': 110 nflag++; 111 yflag = 0; 112 break; 113 114 case 'p': 115 preen++; 116 break; 117 118 case 'y': 119 yflag++; 120 nflag = 0; 121 break; 122 123 default: 124 usage(); 125 } 126 } 127 128 argc -= optind; 129 argv += optind; 130 131 if (!argc) 132 usage(); 133 134 if (signal(SIGINT, SIG_IGN) != SIG_IGN) 135 (void)signal(SIGINT, catch); 136 if (preen) 137 (void)signal(SIGQUIT, catchquit); 138 139 while (argc-- > 0) 140 (void)checkfilesys(blockcheck(*argv++), 0, 0L, 0); 141 142 if (returntosingle) 143 ret = 2; 144 145 exit(ret); 146 } 147 148 static int 149 argtoi(flag, req, str, base) 150 int flag; 151 char *req, *str; 152 int base; 153 { 154 char *cp; 155 int ret; 156 157 ret = (int)strtol(str, &cp, base); 158 if (cp == str || *cp) 159 errexit("-%c flag requires a %s\n", flag, req); 160 return (ret); 161 } 162 163 /* 164 * Check the specified filesystem. 165 */ 166 /* ARGSUSED */ 167 static int 168 checkfilesys(filesys, mntpt, auxdata, child) 169 char *filesys, *mntpt; 170 long auxdata; 171 int child; 172 { 173 daddr_t n_bfree; 174 struct dups *dp; 175 struct zlncnt *zlnp; 176 177 if (preen && child) 178 (void)signal(SIGQUIT, voidquit); 179 setcdevname(filesys, preen); 180 if (debug && preen) 181 pwarn("starting\n"); 182 switch (setup(filesys)) { 183 case 0: 184 if (preen) 185 pfatal("CAN'T CHECK FILE SYSTEM."); 186 case -1: 187 return (0); 188 } 189 /* 190 * 1: scan inodes tallying blocks used 191 */ 192 if (preen == 0) { 193 if (hotroot()) 194 printf("** Root file system\n"); 195 printf("** Phase 1 - Check Blocks and Sizes\n"); 196 } 197 pass1(); 198 199 /* 200 * 1b: locate first references to duplicates, if any 201 */ 202 if (duplist) { 203 if (preen) 204 pfatal("INTERNAL ERROR: dups with -p"); 205 printf("** Phase 1b - Rescan For More DUPS\n"); 206 pass1b(); 207 } 208 209 /* 210 * 2: traverse directories from root to mark all connected directories 211 */ 212 if (preen == 0) 213 printf("** Phase 2 - Check Pathnames\n"); 214 pass2(); 215 216 /* 217 * 3: scan inodes looking for disconnected directories 218 */ 219 if (preen == 0) 220 printf("** Phase 3 - Check Connectivity\n"); 221 pass3(); 222 223 /* 224 * 4: scan inodes looking for disconnected files; check reference counts 225 */ 226 if (preen == 0) 227 printf("** Phase 4 - Check Reference Counts\n"); 228 pass4(); 229 230 /* 231 * 5: check and repair resource counts in cylinder groups 232 */ 233 if (preen == 0) 234 printf("** Phase 5 - Check Cyl groups\n"); 235 pass5(); 236 237 /* 238 * print out summary statistics 239 */ 240 n_bfree = sblock.e2fs.e2fs_fbcount; 241 242 pwarn("%d files, %d used, %d free\n", 243 n_files, n_blks, n_bfree); 244 if (debug && 245 /* 9 reserved and unused inodes in FS */ 246 (n_files -= maxino - 9 - sblock.e2fs.e2fs_ficount)) 247 printf("%d files missing\n", n_files); 248 if (debug) { 249 n_blks += sblock.e2fs_ncg * cgoverhead; 250 n_blks += sblock.e2fs.e2fs_first_dblock; 251 if (n_blks -= maxfsblock - n_bfree) 252 printf("%d blocks missing\n", n_blks); 253 if (duplist != NULL) { 254 printf("The following duplicate blocks remain:"); 255 for (dp = duplist; dp; dp = dp->next) 256 printf(" %d,", dp->dup); 257 printf("\n"); 258 } 259 if (zlnhead != NULL) { 260 printf("The following zero link count inodes remain:"); 261 for (zlnp = zlnhead; zlnp; zlnp = zlnp->next) 262 printf(" %u,", zlnp->zlncnt); 263 printf("\n"); 264 } 265 } 266 zlnhead = (struct zlncnt *)0; 267 duplist = (struct dups *)0; 268 muldup = (struct dups *)0; 269 inocleanup(); 270 if (fsmodified) { 271 time_t t; 272 (void)time(&t); 273 sblock.e2fs.e2fs_wtime = t; 274 sblock.e2fs.e2fs_lastfsck = t; 275 sbdirty(); 276 } 277 ckfini(1); 278 free(blockmap); 279 free(statemap); 280 free((char *)lncntp); 281 if (!fsmodified) 282 return (0); 283 if (!preen) 284 printf("\n***** FILE SYSTEM WAS MODIFIED *****\n"); 285 if (rerun) 286 printf("\n***** PLEASE RERUN FSCK *****\n"); 287 if (hotroot()) { 288 struct statfs stfs_buf; 289 /* 290 * We modified the root. Do a mount update on 291 * it, unless it is read-write, so we can continue. 292 */ 293 if (statfs("/", &stfs_buf) == 0) { 294 long flags = stfs_buf.f_flags; 295 struct ufs_args args; 296 int ret; 297 298 if (flags & MNT_RDONLY) { 299 args.fspec = 0; 300 args.export.ex_flags = 0; 301 args.export.ex_root = 0; 302 flags |= MNT_UPDATE | MNT_RELOAD; 303 ret = mount(MOUNT_EXT2FS, "/", flags, &args); 304 if (ret == 0) 305 return(0); 306 } 307 } 308 if (!preen) 309 printf("\n***** REBOOT NOW *****\n"); 310 sync(); 311 return (4); 312 } 313 return (0); 314 } 315 316 static void 317 usage() 318 { 319 extern char *__progname; 320 321 (void) fprintf(stderr, 322 "Usage: %s [-dfnpy] [-b block] [-c level] [-m mode] filesystem ...\n", 323 __progname); 324 exit(1); 325 } 326 327