1 /* $NetBSD: main.c,v 1.35 2000/12/13 03:04:51 mycroft 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 1.35 2000/12/13 03:04:51 mycroft 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 83 int 84 main(argc, argv) 85 int argc; 86 char *argv[]; 87 { 88 struct rlimit r; 89 int ch; 90 int ret = 0; 91 92 if (getrlimit(RLIMIT_DATA, &r) == 0) { 93 r.rlim_cur = r.rlim_max; 94 (void) setrlimit(RLIMIT_DATA, &r); 95 } 96 sync(); 97 skipclean = 1; 98 markclean = 1; 99 endian = 0; 100 while ((ch = getopt(argc, argv, "B:b:c:dfm: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 skipclean = 0; 127 break; 128 129 case 'm': 130 lfmode = argtoi('m', "mode", optarg, 8); 131 if (lfmode &~ 07777) 132 errx(EEXIT, "bad mode to -m: %o", lfmode); 133 printf("** lost+found creation mode %o\n", lfmode); 134 break; 135 136 case 'n': 137 nflag++; 138 yflag = 0; 139 break; 140 141 case 'p': 142 preen++; 143 break; 144 145 case 'y': 146 yflag++; 147 nflag = 0; 148 break; 149 150 default: 151 usage(); 152 } 153 } 154 155 argc -= optind; 156 argv += optind; 157 158 if (!argc) 159 usage(); 160 161 if (signal(SIGINT, SIG_IGN) != SIG_IGN) 162 (void)signal(SIGINT, catch); 163 if (preen) 164 (void)signal(SIGQUIT, catchquit); 165 166 while (argc-- > 0) 167 (void)checkfilesys(blockcheck(*argv++), 0, 0L, 0); 168 169 if (returntosingle) 170 ret = 2; 171 172 exit(ret); 173 } 174 175 static int 176 argtoi(flag, req, str, base) 177 int flag; 178 char *req, *str; 179 int base; 180 { 181 char *cp; 182 int ret; 183 184 ret = (int)strtol(str, &cp, base); 185 if (cp == str || *cp) 186 errx(EEXIT, "-%c flag requires a %s", flag, req); 187 return (ret); 188 } 189 190 /* 191 * Check the specified filesystem. 192 */ 193 /* ARGSUSED */ 194 static int 195 checkfilesys(filesys, mntpt, auxdata, child) 196 const char *filesys; 197 char *mntpt; 198 long auxdata; 199 int child; 200 { 201 ufs_daddr_t n_ffree, n_bfree; 202 struct dups *dp; 203 struct zlncnt *zlnp; 204 #ifdef LITE2BORKEN 205 int cylno, flags; 206 #else 207 int cylno; 208 #endif 209 210 if (preen && child) 211 (void)signal(SIGQUIT, voidquit); 212 setcdevname(filesys, preen); 213 if (debug && preen) 214 pwarn("starting\n"); 215 switch (setup(filesys)) { 216 case 0: 217 if (preen) 218 pfatal("CAN'T CHECK FILE SYSTEM."); 219 /* fall through */ 220 case -1: 221 return (0); 222 } 223 /* 224 * Cleared if any questions answered no. Used to decide if 225 * the superblock should be marked clean. 226 */ 227 resolved = 1; 228 /* 229 * 1: scan inodes tallying blocks used 230 */ 231 if (preen == 0) { 232 printf("** Last Mounted on %s\n", sblock->fs_fsmnt); 233 if (hotroot()) 234 printf("** Root file system\n"); 235 printf("** Phase 1 - Check Blocks and Sizes\n"); 236 } 237 pass1(); 238 239 /* 240 * 1b: locate first references to duplicates, if any 241 */ 242 if (duplist) { 243 if (preen) 244 pfatal("INTERNAL ERROR: dups with -p\n"); 245 if (usedsoftdep) 246 pfatal("INTERNAL ERROR: dups with softdep\n"); 247 printf("** Phase 1b - Rescan For More DUPS\n"); 248 pass1b(); 249 } 250 251 /* 252 * 2: traverse directories from root to mark all connected directories 253 */ 254 if (preen == 0) 255 printf("** Phase 2 - Check Pathnames\n"); 256 pass2(); 257 258 /* 259 * 3: scan inodes looking for disconnected directories 260 */ 261 if (preen == 0) 262 printf("** Phase 3 - Check Connectivity\n"); 263 pass3(); 264 265 /* 266 * 4: scan inodes looking for disconnected files; check reference counts 267 */ 268 if (preen == 0) 269 printf("** Phase 4 - Check Reference Counts\n"); 270 pass4(); 271 272 /* 273 * 5: check and repair resource counts in cylinder groups 274 */ 275 if (preen == 0) 276 printf("** Phase 5 - Check Cyl groups\n"); 277 pass5(); 278 279 /* 280 * print out summary statistics 281 */ 282 n_ffree = sblock->fs_cstotal.cs_nffree; 283 n_bfree = sblock->fs_cstotal.cs_nbfree; 284 pwarn("%d files, %d used, %d free ", 285 n_files, n_blks, n_ffree + sblock->fs_frag * n_bfree); 286 printf("(%d frags, %d blocks, %d.%d%% fragmentation)\n", 287 n_ffree, n_bfree, (n_ffree * 100) / sblock->fs_dsize, 288 ((n_ffree * 1000 + sblock->fs_dsize / 2) / sblock->fs_dsize) % 10); 289 if (debug && 290 (n_files -= maxino - ROOTINO - sblock->fs_cstotal.cs_nifree)) 291 printf("%d files missing\n", n_files); 292 if (debug) { 293 n_blks += sblock->fs_ncg * 294 (cgdmin(sblock, 0) - cgsblock(sblock, 0)); 295 n_blks += cgsblock(sblock, 0) - cgbase(sblock, 0); 296 n_blks += howmany(sblock->fs_cssize, sblock->fs_fsize); 297 if (n_blks -= maxfsblock - (n_ffree + sblock->fs_frag * n_bfree)) 298 printf("%d blocks missing\n", n_blks); 299 if (duplist != NULL) { 300 printf("The following duplicate blocks remain:"); 301 for (dp = duplist; dp; dp = dp->next) 302 printf(" %d,", dp->dup); 303 printf("\n"); 304 } 305 if (zlnhead != NULL) { 306 printf("The following zero link count inodes remain:"); 307 for (zlnp = zlnhead; zlnp; zlnp = zlnp->next) 308 printf(" %u,", zlnp->zlncnt); 309 printf("\n"); 310 } 311 } 312 zlnhead = (struct zlncnt *)0; 313 duplist = (struct dups *)0; 314 muldup = (struct dups *)0; 315 inocleanup(); 316 if (fsmodified) { 317 (void)time(&sblock->fs_time); 318 sbdirty(); 319 } 320 if ((cvtlevel && sblk.b_dirty) || doswap) { 321 /* 322 * Write out the duplicate super blocks 323 */ 324 for (cylno = 0; cylno < sblock->fs_ncg; cylno++) 325 bwrite(fswritefd, sblk.b_un.b_buf, 326 fsbtodb(sblock, cgsblock(sblock, cylno)), SBSIZE); 327 } 328 if (rerun) 329 markclean = 0; 330 #if LITE2BORKEN 331 if (!hotroot()) { 332 ckfini(); 333 } else { 334 struct statfs stfs_buf; 335 /* 336 * Check to see if root is mounted read-write. 337 */ 338 if (statfs("/", &stfs_buf) == 0) 339 flags = stfs_buf.f_flags; 340 else 341 flags = 0; 342 if (markclean) 343 markclean = flags & MNT_RDONLY; 344 ckfini(); 345 } 346 #else 347 ckfini(); 348 #endif 349 free(blockmap); 350 free(statemap); 351 free((char *)lncntp); 352 if (!fsmodified) 353 return (0); 354 if (!preen) 355 printf("\n***** FILE SYSTEM WAS MODIFIED *****\n"); 356 if (rerun) 357 printf("\n***** PLEASE RERUN FSCK *****\n"); 358 if (hotroot()) { 359 struct statfs stfs_buf; 360 /* 361 * We modified the root. Do a mount update on 362 * it, unless it is read-write, so we can continue. 363 */ 364 if (statfs("/", &stfs_buf) == 0) { 365 long flags = stfs_buf.f_flags; 366 struct ufs_args args; 367 int ret; 368 369 if (flags & MNT_RDONLY) { 370 args.fspec = 0; 371 args.export.ex_flags = 0; 372 args.export.ex_root = 0; 373 flags |= MNT_UPDATE | MNT_RELOAD; 374 ret = mount(MOUNT_FFS, "/", flags, &args); 375 if (ret == 0) 376 return(0); 377 } 378 } 379 if (!preen) 380 printf("\n***** REBOOT NOW *****\n"); 381 sync(); 382 return (4); 383 } 384 return (0); 385 } 386 387 static void 388 usage() 389 { 390 extern char *__progname; 391 392 (void) fprintf(stderr, 393 "Usage: %s [-dfnpy] [-B be|le] [-b block] [-c level] [-m mode]" 394 "filesystem ...\n", 395 __progname); 396 exit(1); 397 } 398 399