1 /* $NetBSD: main.c,v 1.10 2001/02/19 22:56:19 cgd 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 1.10 2001/02/19 22:56:19 cgd 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/ufs/ufsmount.h> 55 #include <ufs/ext2fs/ext2fs_dinode.h> 56 #include <ufs/ext2fs/ext2fs.h> 57 #include <fstab.h> 58 #include <stdlib.h> 59 #include <string.h> 60 #include <ctype.h> 61 #include <stdio.h> 62 #include <time.h> 63 #include <unistd.h> 64 65 #include "fsck.h" 66 #include "extern.h" 67 #include "fsutil.h" 68 69 int returntosingle; 70 71 int main __P((int, char *[])); 72 73 static int argtoi __P((int, char *, char *, int)); 74 static int checkfilesys __P((const char *, char *, long, int)); 75 static void usage __P((void)); 76 77 int 78 main(argc, argv) 79 int argc; 80 char *argv[]; 81 { 82 int ch; 83 int ret = 0; 84 85 sync(); 86 skipclean = 1; 87 while ((ch = getopt(argc, argv, "b:c:dfm:npy")) != -1) { 88 switch (ch) { 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 'd': 96 debug++; 97 break; 98 99 case 'f': 100 skipclean = 0; 101 break; 102 103 case 'm': 104 lfmode = argtoi('m', "mode", optarg, 8); 105 if (lfmode &~ 07777) 106 errexit("bad mode to -m: %o\n", lfmode); 107 printf("** lost+found creation mode %o\n", lfmode); 108 break; 109 110 case 'n': 111 nflag++; 112 yflag = 0; 113 break; 114 115 case 'p': 116 preen++; 117 break; 118 119 case 'y': 120 yflag++; 121 nflag = 0; 122 break; 123 124 default: 125 usage(); 126 } 127 } 128 129 argc -= optind; 130 argv += optind; 131 132 if (!argc) 133 usage(); 134 135 if (signal(SIGINT, SIG_IGN) != SIG_IGN) 136 (void)signal(SIGINT, catch); 137 if (preen) 138 (void)signal(SIGQUIT, catchquit); 139 140 while (argc-- > 0) 141 (void)checkfilesys(blockcheck(*argv++), 0, 0L, 0); 142 143 if (returntosingle) 144 ret = 2; 145 146 exit(ret); 147 } 148 149 static int 150 argtoi(flag, req, str, base) 151 int flag; 152 char *req, *str; 153 int base; 154 { 155 char *cp; 156 int ret; 157 158 ret = (int)strtol(str, &cp, base); 159 if (cp == str || *cp) 160 errexit("-%c flag requires a %s\n", flag, req); 161 return (ret); 162 } 163 164 /* 165 * Check the specified filesystem. 166 */ 167 /* ARGSUSED */ 168 static int 169 checkfilesys(filesys, mntpt, auxdata, child) 170 const char *filesys; 171 char *mntpt; 172 long auxdata; 173 int child; 174 { 175 daddr_t n_bfree; 176 struct dups *dp; 177 struct zlncnt *zlnp; 178 int i; 179 180 if (preen && child) 181 (void)signal(SIGQUIT, voidquit); 182 setcdevname(filesys, preen); 183 if (debug && preen) 184 pwarn("starting\n"); 185 switch (setup(filesys)) { 186 case 0: 187 if (preen) 188 pfatal("CAN'T CHECK FILE SYSTEM."); 189 case -1: 190 return (0); 191 } 192 /* 193 * 1: scan inodes tallying blocks used 194 */ 195 if (preen == 0) { 196 if (sblock.e2fs.e2fs_rev > E2FS_REV0) { 197 printf("** Last Mounted on %s\n", 198 sblock.e2fs.e2fs_fsmnt); 199 } 200 if (hotroot()) 201 printf("** Root file system\n"); 202 printf("** Phase 1 - Check Blocks and Sizes\n"); 203 } 204 pass1(); 205 206 /* 207 * 1b: locate first references to duplicates, if any 208 */ 209 if (duplist) { 210 if (preen) 211 pfatal("INTERNAL ERROR: dups with -p"); 212 printf("** Phase 1b - Rescan For More DUPS\n"); 213 pass1b(); 214 } 215 216 /* 217 * 2: traverse directories from root to mark all connected directories 218 */ 219 if (preen == 0) 220 printf("** Phase 2 - Check Pathnames\n"); 221 pass2(); 222 223 /* 224 * 3: scan inodes looking for disconnected directories 225 */ 226 if (preen == 0) 227 printf("** Phase 3 - Check Connectivity\n"); 228 pass3(); 229 230 /* 231 * 4: scan inodes looking for disconnected files; check reference counts 232 */ 233 if (preen == 0) 234 printf("** Phase 4 - Check Reference Counts\n"); 235 pass4(); 236 237 /* 238 * 5: check and repair resource counts in cylinder groups 239 */ 240 if (preen == 0) 241 printf("** Phase 5 - Check Cyl groups\n"); 242 pass5(); 243 244 /* 245 * print out summary statistics 246 */ 247 n_bfree = sblock.e2fs.e2fs_fbcount; 248 249 pwarn("%d files, %d used, %d free\n", 250 n_files, n_blks, n_bfree); 251 if (debug && 252 /* 9 reserved and unused inodes in FS */ 253 (n_files -= maxino - 9 - sblock.e2fs.e2fs_ficount)) 254 printf("%d files missing\n", n_files); 255 if (debug) { 256 for (i = 0; i < sblock.e2fs_ncg; i++) 257 n_blks += cgoverhead(i); 258 n_blks += sblock.e2fs.e2fs_first_dblock; 259 if (n_blks -= maxfsblock - n_bfree) 260 printf("%d blocks missing\n", n_blks); 261 if (duplist != NULL) { 262 printf("The following duplicate blocks remain:"); 263 for (dp = duplist; dp; dp = dp->next) 264 printf(" %d,", dp->dup); 265 printf("\n"); 266 } 267 if (zlnhead != NULL) { 268 printf("The following zero link count inodes remain:"); 269 for (zlnp = zlnhead; zlnp; zlnp = zlnp->next) 270 printf(" %u,", zlnp->zlncnt); 271 printf("\n"); 272 } 273 } 274 zlnhead = (struct zlncnt *)0; 275 duplist = (struct dups *)0; 276 muldup = (struct dups *)0; 277 inocleanup(); 278 if (fsmodified) { 279 time_t t; 280 (void)time(&t); 281 sblock.e2fs.e2fs_wtime = t; 282 sblock.e2fs.e2fs_lastfsck = t; 283 sbdirty(); 284 } 285 ckfini(1); 286 free(blockmap); 287 free(statemap); 288 free((char *)lncntp); 289 if (!fsmodified) 290 return (0); 291 if (!preen) 292 printf("\n***** FILE SYSTEM WAS MODIFIED *****\n"); 293 if (rerun) 294 printf("\n***** PLEASE RERUN FSCK *****\n"); 295 if (hotroot()) { 296 struct statfs stfs_buf; 297 /* 298 * We modified the root. Do a mount update on 299 * it, unless it is read-write, so we can continue. 300 */ 301 if (statfs("/", &stfs_buf) == 0) { 302 long flags = stfs_buf.f_flags; 303 struct ufs_args args; 304 int ret; 305 306 if (flags & MNT_RDONLY) { 307 args.fspec = 0; 308 args.export.ex_flags = 0; 309 args.export.ex_root = 0; 310 flags |= MNT_UPDATE | MNT_RELOAD; 311 ret = mount(MOUNT_EXT2FS, "/", flags, &args); 312 if (ret == 0) 313 return(0); 314 } 315 } 316 if (!preen) 317 printf("\n***** REBOOT NOW *****\n"); 318 sync(); 319 return (4); 320 } 321 return (0); 322 } 323 324 static void 325 usage() 326 { 327 328 (void) fprintf(stderr, 329 "Usage: %s [-dfnpy] [-b block] [-c level] [-m mode] filesystem ...\n", 330 getprogname()); 331 exit(1); 332 } 333 334