1 /* $NetBSD: main.c,v 1.29 1997/11/02 01:42:44 mjacob 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 1.29 1997/11/02 01:42:44 mjacob 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/ffs/fs.h> 57 58 #include <ctype.h> 59 #include <err.h> 60 #include <fstab.h> 61 #include <string.h> 62 #include <ctype.h> 63 #include <stdio.h> 64 #include <stdlib.h> 65 #include <unistd.h> 66 67 #include "fsck.h" 68 #include "extern.h" 69 #include "fsutil.h" 70 71 int returntosingle; 72 73 int main __P((int, char *[])); 74 75 static int argtoi __P((int, char *, char *, int)); 76 static int checkfilesys __P((char *, char *, long, int)); 77 static void usage __P((void)); 78 79 80 int 81 main(argc, argv) 82 int argc; 83 char *argv[]; 84 { 85 struct rlimit r; 86 int ch; 87 int ret = 0; 88 89 if (getrlimit(RLIMIT_DATA, &r) == 0) { 90 r.rlim_cur = r.rlim_max; 91 (void) setrlimit(RLIMIT_DATA, &r); 92 } 93 sync(); 94 skipclean = 1; 95 while ((ch = getopt(argc, argv, "b:c:dfm:npy")) != -1) { 96 switch (ch) { 97 case 'b': 98 skipclean = 0; 99 bflag = argtoi('b', "number", optarg, 10); 100 printf("Alternate super block location: %d\n", bflag); 101 break; 102 103 case 'c': 104 skipclean = 0; 105 cvtlevel = argtoi('c', "conversion level", optarg, 10); 106 break; 107 108 case 'd': 109 debug++; 110 break; 111 112 case 'f': 113 skipclean = 0; 114 break; 115 116 case 'm': 117 lfmode = argtoi('m', "mode", optarg, 8); 118 if (lfmode &~ 07777) 119 errx(EEXIT, "bad mode to -m: %o", lfmode); 120 printf("** lost+found creation mode %o\n", lfmode); 121 break; 122 123 case 'n': 124 nflag++; 125 yflag = 0; 126 break; 127 128 case 'p': 129 preen++; 130 break; 131 132 case 'y': 133 yflag++; 134 nflag = 0; 135 break; 136 137 default: 138 usage(); 139 } 140 } 141 142 argc -= optind; 143 argv += optind; 144 145 if (!argc) 146 usage(); 147 148 if (signal(SIGINT, SIG_IGN) != SIG_IGN) 149 (void)signal(SIGINT, catch); 150 if (preen) 151 (void)signal(SIGQUIT, catchquit); 152 153 while (argc-- > 0) 154 (void)checkfilesys(blockcheck(*argv++), 0, 0L, 0); 155 156 if (returntosingle) 157 ret = 2; 158 159 exit(ret); 160 } 161 162 static int 163 argtoi(flag, req, str, base) 164 int flag; 165 char *req, *str; 166 int base; 167 { 168 char *cp; 169 int ret; 170 171 ret = (int)strtol(str, &cp, base); 172 if (cp == str || *cp) 173 errx(EEXIT, "-%c flag requires a %s", flag, req); 174 return (ret); 175 } 176 177 /* 178 * Check the specified filesystem. 179 */ 180 /* ARGSUSED */ 181 static int 182 checkfilesys(filesys, mntpt, auxdata, child) 183 char *filesys, *mntpt; 184 long auxdata; 185 int child; 186 { 187 ufs_daddr_t n_ffree, n_bfree; 188 struct dups *dp; 189 struct zlncnt *zlnp; 190 #ifdef LITE2BORKEN 191 int cylno, flags; 192 #else 193 int cylno; 194 #endif 195 196 if (preen && child) 197 (void)signal(SIGQUIT, voidquit); 198 setcdevname(filesys, preen); 199 if (debug && preen) 200 pwarn("starting\n"); 201 switch (setup(filesys)) { 202 case 0: 203 if (preen) 204 pfatal("CAN'T CHECK FILE SYSTEM."); 205 /* fall through */ 206 case -1: 207 return (0); 208 } 209 /* 210 * 1: scan inodes tallying blocks used 211 */ 212 if (preen == 0) { 213 printf("** Last Mounted on %s\n", sblock.fs_fsmnt); 214 if (hotroot()) 215 printf("** Root file system\n"); 216 printf("** Phase 1 - Check Blocks and Sizes\n"); 217 } 218 pass1(); 219 220 /* 221 * 1b: locate first references to duplicates, if any 222 */ 223 if (duplist) { 224 if (preen) 225 pfatal("INTERNAL ERROR: dups with -p"); 226 printf("** Phase 1b - Rescan For More DUPS\n"); 227 pass1b(); 228 } 229 230 /* 231 * 2: traverse directories from root to mark all connected directories 232 */ 233 if (preen == 0) 234 printf("** Phase 2 - Check Pathnames\n"); 235 pass2(); 236 237 /* 238 * 3: scan inodes looking for disconnected directories 239 */ 240 if (preen == 0) 241 printf("** Phase 3 - Check Connectivity\n"); 242 pass3(); 243 244 /* 245 * 4: scan inodes looking for disconnected files; check reference counts 246 */ 247 if (preen == 0) 248 printf("** Phase 4 - Check Reference Counts\n"); 249 pass4(); 250 251 /* 252 * 5: check and repair resource counts in cylinder groups 253 */ 254 if (preen == 0) 255 printf("** Phase 5 - Check Cyl groups\n"); 256 pass5(); 257 258 /* 259 * print out summary statistics 260 */ 261 n_ffree = sblock.fs_cstotal.cs_nffree; 262 n_bfree = sblock.fs_cstotal.cs_nbfree; 263 pwarn("%d files, %d used, %d free ", 264 n_files, n_blks, n_ffree + sblock.fs_frag * n_bfree); 265 printf("(%d frags, %d blocks, %d.%d%% fragmentation)\n", 266 n_ffree, n_bfree, (n_ffree * 100) / sblock.fs_dsize, 267 ((n_ffree * 1000 + sblock.fs_dsize / 2) / sblock.fs_dsize) % 10); 268 if (debug && 269 (n_files -= maxino - ROOTINO - sblock.fs_cstotal.cs_nifree)) 270 printf("%d files missing\n", n_files); 271 if (debug) { 272 n_blks += sblock.fs_ncg * 273 (cgdmin(&sblock, 0) - cgsblock(&sblock, 0)); 274 n_blks += cgsblock(&sblock, 0) - cgbase(&sblock, 0); 275 n_blks += howmany(sblock.fs_cssize, sblock.fs_fsize); 276 if (n_blks -= maxfsblock - (n_ffree + sblock.fs_frag * n_bfree)) 277 printf("%d blocks missing\n", n_blks); 278 if (duplist != NULL) { 279 printf("The following duplicate blocks remain:"); 280 for (dp = duplist; dp; dp = dp->next) 281 printf(" %d,", dp->dup); 282 printf("\n"); 283 } 284 if (zlnhead != NULL) { 285 printf("The following zero link count inodes remain:"); 286 for (zlnp = zlnhead; zlnp; zlnp = zlnp->next) 287 printf(" %u,", zlnp->zlncnt); 288 printf("\n"); 289 } 290 } 291 zlnhead = (struct zlncnt *)0; 292 duplist = (struct dups *)0; 293 muldup = (struct dups *)0; 294 inocleanup(); 295 if (fsmodified) { 296 (void)time(&sblock.fs_time); 297 sbdirty(); 298 } 299 if (cvtlevel && sblk.b_dirty) { 300 /* 301 * Write out the duplicate super blocks 302 */ 303 for (cylno = 0; cylno < sblock.fs_ncg; cylno++) 304 bwrite(fswritefd, (char *)&sblock, 305 fsbtodb(&sblock, cgsblock(&sblock, cylno)), SBSIZE); 306 } 307 #if LITE2BORKEN 308 if (!hotroot()) { 309 ckfini(1); 310 } else { 311 struct statfs stfs_buf; 312 /* 313 * Check to see if root is mounted read-write. 314 */ 315 if (statfs("/", &stfs_buf) == 0) 316 flags = stfs_buf.f_flags; 317 else 318 flags = 0; 319 ckfini(flags & MNT_RDONLY); 320 } 321 #else 322 ckfini(1); 323 #endif 324 free(blockmap); 325 free(statemap); 326 free((char *)lncntp); 327 if (!fsmodified) 328 return (0); 329 if (!preen) 330 printf("\n***** FILE SYSTEM WAS MODIFIED *****\n"); 331 if (rerun) 332 printf("\n***** PLEASE RERUN FSCK *****\n"); 333 if (hotroot()) { 334 struct statfs stfs_buf; 335 /* 336 * We modified the root. Do a mount update on 337 * it, unless it is read-write, so we can continue. 338 */ 339 if (statfs("/", &stfs_buf) == 0) { 340 long flags = stfs_buf.f_flags; 341 struct ufs_args args; 342 int ret; 343 344 if (flags & MNT_RDONLY) { 345 args.fspec = 0; 346 args.export.ex_flags = 0; 347 args.export.ex_root = 0; 348 flags |= MNT_UPDATE | MNT_RELOAD; 349 ret = mount(MOUNT_FFS, "/", flags, &args); 350 if (ret == 0) 351 return(0); 352 } 353 } 354 if (!preen) 355 printf("\n***** REBOOT NOW *****\n"); 356 sync(); 357 return (4); 358 } 359 return (0); 360 } 361 362 static void 363 usage() 364 { 365 extern char *__progname; 366 367 (void) fprintf(stderr, 368 "Usage: %s [-dfnpy] [-b block] [-c level] [-m mode] filesystem ...\n", 369 __progname); 370 exit(1); 371 } 372 373