1 /* $NetBSD: main.c,v 1.40 2001/08/15 03:54:53 lukem Exp $ */ 2 3 /* 4 * Copyright (c) 1980, 1986, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 #ifndef lint 38 __COPYRIGHT("@(#) Copyright (c) 1980, 1986, 1993\n\ 39 The Regents of the University of California. All rights reserved.\n"); 40 #endif /* not lint */ 41 42 #ifndef lint 43 #if 0 44 static char sccsid[] = "@(#)main.c 8.6 (Berkeley) 5/14/95"; 45 #else 46 __RCSID("$NetBSD: main.c,v 1.40 2001/08/15 03:54:53 lukem Exp $"); 47 #endif 48 #endif /* not lint */ 49 50 #include <sys/param.h> 51 #include <sys/time.h> 52 #include <sys/mount.h> 53 #include <sys/resource.h> 54 55 #include <ufs/ufs/dinode.h> 56 #include <ufs/ufs/ufsmount.h> 57 #include <ufs/ffs/fs.h> 58 #include <ufs/ffs/ffs_extern.h> 59 60 #include <ctype.h> 61 #include <err.h> 62 #include <fstab.h> 63 #include <string.h> 64 #include <time.h> 65 #include <ctype.h> 66 #include <stdio.h> 67 #include <stdlib.h> 68 #include <unistd.h> 69 70 #include "fsck.h" 71 #include "extern.h" 72 #include "fsutil.h" 73 74 int returntosingle; 75 76 int main __P((int, char *[])); 77 78 static int argtoi __P((int, char *, char *, int)); 79 static int checkfilesys __P((const char *, char *, long, int)); 80 static void usage __P((void)); 81 82 int 83 main(argc, argv) 84 int argc; 85 char *argv[]; 86 { 87 struct rlimit r; 88 int ch; 89 int ret = 0; 90 91 if (getrlimit(RLIMIT_DATA, &r) == 0) { 92 r.rlim_cur = r.rlim_max; 93 (void) setrlimit(RLIMIT_DATA, &r); 94 } 95 sync(); 96 skipclean = 1; 97 markclean = 1; 98 forceimage = 0; 99 endian = 0; 100 while ((ch = getopt(argc, argv, "B:b:c:dFfm:npy")) != -1) { 101 switch (ch) { 102 case 'B': 103 if (strcmp(optarg, "be") == 0) 104 endian = BIG_ENDIAN; 105 else if (strcmp(optarg, "le") == 0) 106 endian = LITTLE_ENDIAN; 107 else usage(); 108 break; 109 110 case 'b': 111 skipclean = 0; 112 bflag = argtoi('b', "number", optarg, 10); 113 printf("Alternate super block location: %d\n", bflag); 114 break; 115 116 case 'c': 117 skipclean = 0; 118 cvtlevel = argtoi('c', "conversion level", optarg, 10); 119 break; 120 121 case 'd': 122 debug++; 123 break; 124 125 case 'F': 126 forceimage = 1; 127 break; 128 129 case 'f': 130 skipclean = 0; 131 break; 132 133 case 'm': 134 lfmode = argtoi('m', "mode", optarg, 8); 135 if (lfmode &~ 07777) 136 errx(EEXIT, "bad mode to -m: %o", lfmode); 137 printf("** lost+found creation mode %o\n", lfmode); 138 break; 139 140 case 'n': 141 nflag++; 142 yflag = 0; 143 break; 144 145 case 'p': 146 preen++; 147 break; 148 149 case 'y': 150 yflag++; 151 nflag = 0; 152 break; 153 154 default: 155 usage(); 156 } 157 } 158 159 argc -= optind; 160 argv += optind; 161 162 if (!argc) 163 usage(); 164 165 if (signal(SIGINT, SIG_IGN) != SIG_IGN) 166 (void)signal(SIGINT, catch); 167 if (preen) 168 (void)signal(SIGQUIT, catchquit); 169 170 while (argc-- > 0) 171 (void)checkfilesys(blockcheck(*argv++), 0, 0L, 0); 172 173 if (returntosingle) 174 ret = 2; 175 176 exit(ret); 177 } 178 179 static int 180 argtoi(flag, req, str, base) 181 int flag; 182 char *req, *str; 183 int base; 184 { 185 char *cp; 186 int ret; 187 188 ret = (int)strtol(str, &cp, base); 189 if (cp == str || *cp) 190 errx(EEXIT, "-%c flag requires a %s", flag, req); 191 return (ret); 192 } 193 194 /* 195 * Check the specified filesystem. 196 */ 197 /* ARGSUSED */ 198 static int 199 checkfilesys(filesys, mntpt, auxdata, child) 200 const char *filesys; 201 char *mntpt; 202 long auxdata; 203 int child; 204 { 205 ufs_daddr_t n_ffree, n_bfree; 206 struct dups *dp; 207 struct zlncnt *zlnp; 208 #ifdef LITE2BORKEN 209 int flags; 210 #endif 211 212 if (preen && child) 213 (void)signal(SIGQUIT, voidquit); 214 setcdevname(filesys, preen); 215 if (debug && preen) 216 pwarn("starting\n"); 217 switch (setup(filesys)) { 218 case 0: 219 if (preen) 220 pfatal("CAN'T CHECK FILE SYSTEM."); 221 /* fall through */ 222 case -1: 223 return (0); 224 } 225 /* 226 * Cleared if any questions answered no. Used to decide if 227 * the superblock should be marked clean. 228 */ 229 resolved = 1; 230 /* 231 * 1: scan inodes tallying blocks used 232 */ 233 if (preen == 0) { 234 printf("** Last Mounted on %s\n", sblock->fs_fsmnt); 235 if (hotroot()) 236 printf("** Root file system\n"); 237 printf("** Phase 1 - Check Blocks and Sizes\n"); 238 } 239 pass1(); 240 241 /* 242 * 1b: locate first references to duplicates, if any 243 */ 244 if (duplist) { 245 if (preen) 246 pfatal("INTERNAL ERROR: dups with -p\n"); 247 if (usedsoftdep) 248 pfatal("INTERNAL ERROR: dups with softdep\n"); 249 printf("** Phase 1b - Rescan For More DUPS\n"); 250 pass1b(); 251 } 252 253 /* 254 * 2: traverse directories from root to mark all connected directories 255 */ 256 if (preen == 0) 257 printf("** Phase 2 - Check Pathnames\n"); 258 pass2(); 259 260 /* 261 * 3: scan inodes looking for disconnected directories 262 */ 263 if (preen == 0) 264 printf("** Phase 3 - Check Connectivity\n"); 265 pass3(); 266 267 /* 268 * 4: scan inodes looking for disconnected files; check reference counts 269 */ 270 if (preen == 0) 271 printf("** Phase 4 - Check Reference Counts\n"); 272 pass4(); 273 274 /* 275 * 5: check and repair resource counts in cylinder groups 276 */ 277 if (preen == 0) 278 printf("** Phase 5 - Check Cyl groups\n"); 279 pass5(); 280 281 /* 282 * print out summary statistics 283 */ 284 n_ffree = sblock->fs_cstotal.cs_nffree; 285 n_bfree = sblock->fs_cstotal.cs_nbfree; 286 pwarn("%d files, %d used, %d free ", 287 n_files, n_blks, n_ffree + sblock->fs_frag * n_bfree); 288 printf("(%d frags, %d blocks, %d.%d%% fragmentation)\n", 289 n_ffree, n_bfree, (n_ffree * 100) / sblock->fs_dsize, 290 ((n_ffree * 1000 + sblock->fs_dsize / 2) / sblock->fs_dsize) % 10); 291 if (debug && 292 (n_files -= maxino - ROOTINO - sblock->fs_cstotal.cs_nifree)) 293 printf("%d files missing\n", n_files); 294 if (debug) { 295 n_blks += sblock->fs_ncg * 296 (cgdmin(sblock, 0) - cgsblock(sblock, 0)); 297 n_blks += cgsblock(sblock, 0) - cgbase(sblock, 0); 298 n_blks += howmany(sblock->fs_cssize, sblock->fs_fsize); 299 if (n_blks -= maxfsblock - (n_ffree + sblock->fs_frag * n_bfree)) 300 printf("%d blocks missing\n", n_blks); 301 if (duplist != NULL) { 302 printf("The following duplicate blocks remain:"); 303 for (dp = duplist; dp; dp = dp->next) 304 printf(" %d,", dp->dup); 305 printf("\n"); 306 } 307 if (zlnhead != NULL) { 308 printf("The following zero link count inodes remain:"); 309 for (zlnp = zlnhead; zlnp; zlnp = zlnp->next) 310 printf(" %u,", zlnp->zlncnt); 311 printf("\n"); 312 } 313 } 314 zlnhead = (struct zlncnt *)0; 315 duplist = (struct dups *)0; 316 muldup = (struct dups *)0; 317 inocleanup(); 318 if (fsmodified) { 319 time_t t; 320 (void)time(&t); 321 sblock->fs_time = t; 322 sbdirty(); 323 } 324 if (rerun) 325 markclean = 0; 326 #if LITE2BORKEN 327 if (!hotroot()) { 328 ckfini(); 329 } else { 330 struct statfs stfs_buf; 331 /* 332 * Check to see if root is mounted read-write. 333 */ 334 if (statfs("/", &stfs_buf) == 0) 335 flags = stfs_buf.f_flags; 336 else 337 flags = 0; 338 if (markclean) 339 markclean = flags & MNT_RDONLY; 340 ckfini(); 341 } 342 #else 343 ckfini(); 344 #endif 345 free(blockmap); 346 free(statemap); 347 free((char *)lncntp); 348 if (!fsmodified) 349 return (0); 350 if (!preen) 351 printf("\n***** FILE SYSTEM WAS MODIFIED *****\n"); 352 if (rerun) 353 printf("\n***** PLEASE RERUN FSCK *****\n"); 354 if (hotroot()) { 355 struct statfs stfs_buf; 356 /* 357 * We modified the root. Do a mount update on 358 * it, unless it is read-write, so we can continue. 359 */ 360 if (statfs("/", &stfs_buf) == 0) { 361 long flags = stfs_buf.f_flags; 362 struct ufs_args args; 363 int ret; 364 365 if (flags & MNT_RDONLY) { 366 args.fspec = 0; 367 args.export.ex_flags = 0; 368 args.export.ex_root = 0; 369 flags |= MNT_UPDATE | MNT_RELOAD; 370 ret = mount(MOUNT_FFS, "/", flags, &args); 371 if (ret == 0) 372 return(0); 373 } 374 } 375 if (!preen) 376 printf("\n***** REBOOT NOW *****\n"); 377 sync(); 378 return (4); 379 } 380 return (0); 381 } 382 383 static void 384 usage() 385 { 386 387 (void) fprintf(stderr, 388 "Usage: %s [-dFfnpy] [-B be|le] [-b block] [-c level] [-m mode]" 389 " filesystem ...\n", 390 getprogname()); 391 exit(1); 392 } 393 394