1 /* $NetBSD: main.c,v 1.8 2000/01/28 16:01:46 bouyer 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 1.8 2000/01/28 16:01:46 bouyer 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 78 int 79 main(argc, argv) 80 int argc; 81 char *argv[]; 82 { 83 int ch; 84 int ret = 0; 85 86 sync(); 87 skipclean = 1; 88 while ((ch = getopt(argc, argv, "b:c:dfm:npy")) != -1) { 89 switch (ch) { 90 case 'b': 91 skipclean = 0; 92 bflag = argtoi('b', "number", optarg, 10); 93 printf("Alternate super block location: %d\n", bflag); 94 break; 95 96 case 'd': 97 debug++; 98 break; 99 100 case 'f': 101 skipclean = 0; 102 break; 103 104 case 'm': 105 lfmode = argtoi('m', "mode", optarg, 8); 106 if (lfmode &~ 07777) 107 errexit("bad mode to -m: %o\n", lfmode); 108 printf("** lost+found creation mode %o\n", lfmode); 109 break; 110 111 case 'n': 112 nflag++; 113 yflag = 0; 114 break; 115 116 case 'p': 117 preen++; 118 break; 119 120 case 'y': 121 yflag++; 122 nflag = 0; 123 break; 124 125 default: 126 usage(); 127 } 128 } 129 130 argc -= optind; 131 argv += optind; 132 133 if (!argc) 134 usage(); 135 136 if (signal(SIGINT, SIG_IGN) != SIG_IGN) 137 (void)signal(SIGINT, catch); 138 if (preen) 139 (void)signal(SIGQUIT, catchquit); 140 141 while (argc-- > 0) 142 (void)checkfilesys(blockcheck(*argv++), 0, 0L, 0); 143 144 if (returntosingle) 145 ret = 2; 146 147 exit(ret); 148 } 149 150 static int 151 argtoi(flag, req, str, base) 152 int flag; 153 char *req, *str; 154 int base; 155 { 156 char *cp; 157 int ret; 158 159 ret = (int)strtol(str, &cp, base); 160 if (cp == str || *cp) 161 errexit("-%c flag requires a %s\n", flag, req); 162 return (ret); 163 } 164 165 /* 166 * Check the specified filesystem. 167 */ 168 /* ARGSUSED */ 169 static int 170 checkfilesys(filesys, mntpt, auxdata, child) 171 const char *filesys; 172 char *mntpt; 173 long auxdata; 174 int child; 175 { 176 daddr_t n_bfree; 177 struct dups *dp; 178 struct zlncnt *zlnp; 179 int i; 180 181 if (preen && child) 182 (void)signal(SIGQUIT, voidquit); 183 setcdevname(filesys, preen); 184 if (debug && preen) 185 pwarn("starting\n"); 186 switch (setup(filesys)) { 187 case 0: 188 if (preen) 189 pfatal("CAN'T CHECK FILE SYSTEM."); 190 case -1: 191 return (0); 192 } 193 /* 194 * 1: scan inodes tallying blocks used 195 */ 196 if (preen == 0) { 197 if (sblock.e2fs.e2fs_rev > E2FS_REV0) { 198 printf("** Last Mounted on %s\n", 199 sblock.e2fs.e2fs_fsmnt); 200 } 201 if (hotroot()) 202 printf("** Root file system\n"); 203 printf("** Phase 1 - Check Blocks and Sizes\n"); 204 } 205 pass1(); 206 207 /* 208 * 1b: locate first references to duplicates, if any 209 */ 210 if (duplist) { 211 if (preen) 212 pfatal("INTERNAL ERROR: dups with -p"); 213 printf("** Phase 1b - Rescan For More DUPS\n"); 214 pass1b(); 215 } 216 217 /* 218 * 2: traverse directories from root to mark all connected directories 219 */ 220 if (preen == 0) 221 printf("** Phase 2 - Check Pathnames\n"); 222 pass2(); 223 224 /* 225 * 3: scan inodes looking for disconnected directories 226 */ 227 if (preen == 0) 228 printf("** Phase 3 - Check Connectivity\n"); 229 pass3(); 230 231 /* 232 * 4: scan inodes looking for disconnected files; check reference counts 233 */ 234 if (preen == 0) 235 printf("** Phase 4 - Check Reference Counts\n"); 236 pass4(); 237 238 /* 239 * 5: check and repair resource counts in cylinder groups 240 */ 241 if (preen == 0) 242 printf("** Phase 5 - Check Cyl groups\n"); 243 pass5(); 244 245 /* 246 * print out summary statistics 247 */ 248 n_bfree = sblock.e2fs.e2fs_fbcount; 249 250 pwarn("%d files, %d used, %d free\n", 251 n_files, n_blks, n_bfree); 252 if (debug && 253 /* 9 reserved and unused inodes in FS */ 254 (n_files -= maxino - 9 - sblock.e2fs.e2fs_ficount)) 255 printf("%d files missing\n", n_files); 256 if (debug) { 257 for (i = 0; i < sblock.e2fs_ncg; i++) 258 n_blks += cgoverhead(i); 259 n_blks += sblock.e2fs.e2fs_first_dblock; 260 if (n_blks -= maxfsblock - n_bfree) 261 printf("%d blocks missing\n", n_blks); 262 if (duplist != NULL) { 263 printf("The following duplicate blocks remain:"); 264 for (dp = duplist; dp; dp = dp->next) 265 printf(" %d,", dp->dup); 266 printf("\n"); 267 } 268 if (zlnhead != NULL) { 269 printf("The following zero link count inodes remain:"); 270 for (zlnp = zlnhead; zlnp; zlnp = zlnp->next) 271 printf(" %u,", zlnp->zlncnt); 272 printf("\n"); 273 } 274 } 275 zlnhead = (struct zlncnt *)0; 276 duplist = (struct dups *)0; 277 muldup = (struct dups *)0; 278 inocleanup(); 279 if (fsmodified) { 280 time_t t; 281 (void)time(&t); 282 sblock.e2fs.e2fs_wtime = t; 283 sblock.e2fs.e2fs_lastfsck = t; 284 sbdirty(); 285 } 286 ckfini(1); 287 free(blockmap); 288 free(statemap); 289 free((char *)lncntp); 290 if (!fsmodified) 291 return (0); 292 if (!preen) 293 printf("\n***** FILE SYSTEM WAS MODIFIED *****\n"); 294 if (rerun) 295 printf("\n***** PLEASE RERUN FSCK *****\n"); 296 if (hotroot()) { 297 struct statfs stfs_buf; 298 /* 299 * We modified the root. Do a mount update on 300 * it, unless it is read-write, so we can continue. 301 */ 302 if (statfs("/", &stfs_buf) == 0) { 303 long flags = stfs_buf.f_flags; 304 struct ufs_args args; 305 int ret; 306 307 if (flags & MNT_RDONLY) { 308 args.fspec = 0; 309 args.export.ex_flags = 0; 310 args.export.ex_root = 0; 311 flags |= MNT_UPDATE | MNT_RELOAD; 312 ret = mount(MOUNT_EXT2FS, "/", flags, &args); 313 if (ret == 0) 314 return(0); 315 } 316 } 317 if (!preen) 318 printf("\n***** REBOOT NOW *****\n"); 319 sync(); 320 return (4); 321 } 322 return (0); 323 } 324 325 static void 326 usage() 327 { 328 extern char *__progname; 329 330 (void) fprintf(stderr, 331 "Usage: %s [-dfnpy] [-b block] [-c level] [-m mode] filesystem ...\n", 332 __progname); 333 exit(1); 334 } 335 336