1 /* $NetBSD: main.c,v 1.39 2001/02/23 07:51:41 christos 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 1.39 2001/02/23 07:51:41 christos 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 endian = 0; 99 while ((ch = getopt(argc, argv, "B:b:c:dfm:npy")) != -1) { 100 switch (ch) { 101 case 'B': 102 if (strcmp(optarg, "be") == 0) 103 endian = BIG_ENDIAN; 104 else if (strcmp(optarg, "le") == 0) 105 endian = LITTLE_ENDIAN; 106 else usage(); 107 break; 108 109 case 'b': 110 skipclean = 0; 111 bflag = argtoi('b', "number", optarg, 10); 112 printf("Alternate super block location: %d\n", bflag); 113 break; 114 115 case 'c': 116 skipclean = 0; 117 cvtlevel = argtoi('c', "conversion level", optarg, 10); 118 break; 119 120 case 'd': 121 debug++; 122 break; 123 124 case 'f': 125 skipclean = 0; 126 break; 127 128 case 'm': 129 lfmode = argtoi('m', "mode", optarg, 8); 130 if (lfmode &~ 07777) 131 errx(EEXIT, "bad mode to -m: %o", lfmode); 132 printf("** lost+found creation mode %o\n", lfmode); 133 break; 134 135 case 'n': 136 nflag++; 137 yflag = 0; 138 break; 139 140 case 'p': 141 preen++; 142 break; 143 144 case 'y': 145 yflag++; 146 nflag = 0; 147 break; 148 149 default: 150 usage(); 151 } 152 } 153 154 argc -= optind; 155 argv += optind; 156 157 if (!argc) 158 usage(); 159 160 if (signal(SIGINT, SIG_IGN) != SIG_IGN) 161 (void)signal(SIGINT, catch); 162 if (preen) 163 (void)signal(SIGQUIT, catchquit); 164 165 while (argc-- > 0) 166 (void)checkfilesys(blockcheck(*argv++), 0, 0L, 0); 167 168 if (returntosingle) 169 ret = 2; 170 171 exit(ret); 172 } 173 174 static int 175 argtoi(flag, req, str, base) 176 int flag; 177 char *req, *str; 178 int base; 179 { 180 char *cp; 181 int ret; 182 183 ret = (int)strtol(str, &cp, base); 184 if (cp == str || *cp) 185 errx(EEXIT, "-%c flag requires a %s", flag, req); 186 return (ret); 187 } 188 189 /* 190 * Check the specified filesystem. 191 */ 192 /* ARGSUSED */ 193 static int 194 checkfilesys(filesys, mntpt, auxdata, child) 195 const char *filesys; 196 char *mntpt; 197 long auxdata; 198 int child; 199 { 200 ufs_daddr_t n_ffree, n_bfree; 201 struct dups *dp; 202 struct zlncnt *zlnp; 203 #ifdef LITE2BORKEN 204 int flags; 205 #endif 206 207 if (preen && child) 208 (void)signal(SIGQUIT, voidquit); 209 setcdevname(filesys, preen); 210 if (debug && preen) 211 pwarn("starting\n"); 212 switch (setup(filesys)) { 213 case 0: 214 if (preen) 215 pfatal("CAN'T CHECK FILE SYSTEM."); 216 /* fall through */ 217 case -1: 218 return (0); 219 } 220 /* 221 * Cleared if any questions answered no. Used to decide if 222 * the superblock should be marked clean. 223 */ 224 resolved = 1; 225 /* 226 * 1: scan inodes tallying blocks used 227 */ 228 if (preen == 0) { 229 printf("** Last Mounted on %s\n", sblock->fs_fsmnt); 230 if (hotroot()) 231 printf("** Root file system\n"); 232 printf("** Phase 1 - Check Blocks and Sizes\n"); 233 } 234 pass1(); 235 236 /* 237 * 1b: locate first references to duplicates, if any 238 */ 239 if (duplist) { 240 if (preen) 241 pfatal("INTERNAL ERROR: dups with -p\n"); 242 if (usedsoftdep) 243 pfatal("INTERNAL ERROR: dups with softdep\n"); 244 printf("** Phase 1b - Rescan For More DUPS\n"); 245 pass1b(); 246 } 247 248 /* 249 * 2: traverse directories from root to mark all connected directories 250 */ 251 if (preen == 0) 252 printf("** Phase 2 - Check Pathnames\n"); 253 pass2(); 254 255 /* 256 * 3: scan inodes looking for disconnected directories 257 */ 258 if (preen == 0) 259 printf("** Phase 3 - Check Connectivity\n"); 260 pass3(); 261 262 /* 263 * 4: scan inodes looking for disconnected files; check reference counts 264 */ 265 if (preen == 0) 266 printf("** Phase 4 - Check Reference Counts\n"); 267 pass4(); 268 269 /* 270 * 5: check and repair resource counts in cylinder groups 271 */ 272 if (preen == 0) 273 printf("** Phase 5 - Check Cyl groups\n"); 274 pass5(); 275 276 /* 277 * print out summary statistics 278 */ 279 n_ffree = sblock->fs_cstotal.cs_nffree; 280 n_bfree = sblock->fs_cstotal.cs_nbfree; 281 pwarn("%d files, %d used, %d free ", 282 n_files, n_blks, n_ffree + sblock->fs_frag * n_bfree); 283 printf("(%d frags, %d blocks, %d.%d%% fragmentation)\n", 284 n_ffree, n_bfree, (n_ffree * 100) / sblock->fs_dsize, 285 ((n_ffree * 1000 + sblock->fs_dsize / 2) / sblock->fs_dsize) % 10); 286 if (debug && 287 (n_files -= maxino - ROOTINO - sblock->fs_cstotal.cs_nifree)) 288 printf("%d files missing\n", n_files); 289 if (debug) { 290 n_blks += sblock->fs_ncg * 291 (cgdmin(sblock, 0) - cgsblock(sblock, 0)); 292 n_blks += cgsblock(sblock, 0) - cgbase(sblock, 0); 293 n_blks += howmany(sblock->fs_cssize, sblock->fs_fsize); 294 if (n_blks -= maxfsblock - (n_ffree + sblock->fs_frag * n_bfree)) 295 printf("%d blocks missing\n", n_blks); 296 if (duplist != NULL) { 297 printf("The following duplicate blocks remain:"); 298 for (dp = duplist; dp; dp = dp->next) 299 printf(" %d,", dp->dup); 300 printf("\n"); 301 } 302 if (zlnhead != NULL) { 303 printf("The following zero link count inodes remain:"); 304 for (zlnp = zlnhead; zlnp; zlnp = zlnp->next) 305 printf(" %u,", zlnp->zlncnt); 306 printf("\n"); 307 } 308 } 309 zlnhead = (struct zlncnt *)0; 310 duplist = (struct dups *)0; 311 muldup = (struct dups *)0; 312 inocleanup(); 313 if (fsmodified) { 314 time_t t; 315 (void)time(&t); 316 sblock->fs_time = t; 317 sbdirty(); 318 } 319 if (rerun) 320 markclean = 0; 321 #if LITE2BORKEN 322 if (!hotroot()) { 323 ckfini(); 324 } else { 325 struct statfs stfs_buf; 326 /* 327 * Check to see if root is mounted read-write. 328 */ 329 if (statfs("/", &stfs_buf) == 0) 330 flags = stfs_buf.f_flags; 331 else 332 flags = 0; 333 if (markclean) 334 markclean = flags & MNT_RDONLY; 335 ckfini(); 336 } 337 #else 338 ckfini(); 339 #endif 340 free(blockmap); 341 free(statemap); 342 free((char *)lncntp); 343 if (!fsmodified) 344 return (0); 345 if (!preen) 346 printf("\n***** FILE SYSTEM WAS MODIFIED *****\n"); 347 if (rerun) 348 printf("\n***** PLEASE RERUN FSCK *****\n"); 349 if (hotroot()) { 350 struct statfs stfs_buf; 351 /* 352 * We modified the root. Do a mount update on 353 * it, unless it is read-write, so we can continue. 354 */ 355 if (statfs("/", &stfs_buf) == 0) { 356 long flags = stfs_buf.f_flags; 357 struct ufs_args args; 358 int ret; 359 360 if (flags & MNT_RDONLY) { 361 args.fspec = 0; 362 args.export.ex_flags = 0; 363 args.export.ex_root = 0; 364 flags |= MNT_UPDATE | MNT_RELOAD; 365 ret = mount(MOUNT_FFS, "/", flags, &args); 366 if (ret == 0) 367 return(0); 368 } 369 } 370 if (!preen) 371 printf("\n***** REBOOT NOW *****\n"); 372 sync(); 373 return (4); 374 } 375 return (0); 376 } 377 378 static void 379 usage() 380 { 381 382 (void) fprintf(stderr, 383 "Usage: %s [-dfnpy] [-B be|le] [-b block] [-c level] [-m mode]" 384 "filesystem ...\n", 385 getprogname()); 386 exit(1); 387 } 388 389