1 /* 2 * Copyright (c) 1980, 1986, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #ifndef lint 35 static const char copyright[] = 36 "@(#) Copyright (c) 1980, 1986, 1993\n\ 37 The Regents of the University of California. All rights reserved.\n"; 38 #endif /* not lint */ 39 40 #ifndef lint 41 #if 0 42 static char sccsid[] = "@(#)main.c 8.6 (Berkeley) 5/14/95"; 43 #endif 44 static const char rcsid[] = 45 "$FreeBSD$"; 46 #endif /* not lint */ 47 48 #include <sys/param.h> 49 #include <sys/stat.h> 50 #include <sys/time.h> 51 #include <sys/mount.h> 52 #include <sys/resource.h> 53 54 #include <ufs/ufs/dinode.h> 55 #include <ufs/ufs/ufsmount.h> 56 #include <ufs/ffs/fs.h> 57 58 #include <err.h> 59 #include <errno.h> 60 #include <fstab.h> 61 #include <paths.h> 62 63 #include "fsck.h" 64 65 static int argtoi __P((int flag, char *req, char *str, int base)); 66 static int docheck __P((struct fstab *fsp)); 67 static int checkfilesys __P((char *filesys, char *mntpt, long auxdata, 68 int child)); 69 static struct statfs *getmntpt __P((const char *)); 70 int main __P((int argc, char *argv[])); 71 72 int 73 main(argc, argv) 74 int argc; 75 char *argv[]; 76 { 77 int ch; 78 int ret, maxrun = 0; 79 struct rlimit rlimit; 80 81 sync(); 82 while ((ch = getopt(argc, argv, "dfpnNyYb:c:l:m:")) != -1) { 83 switch (ch) { 84 case 'p': 85 preen++; 86 break; 87 88 case 'b': 89 bflag = argtoi('b', "number", optarg, 10); 90 printf("Alternate super block location: %d\n", bflag); 91 break; 92 93 case 'c': 94 cvtlevel = argtoi('c', "conversion level", optarg, 10); 95 break; 96 97 case 'd': 98 debug++; 99 break; 100 101 case 'f': 102 fflag++; 103 break; 104 105 case 'l': 106 maxrun = argtoi('l', "number", optarg, 10); 107 break; 108 109 case 'm': 110 lfmode = argtoi('m', "mode", optarg, 8); 111 if (lfmode &~ 07777) 112 errx(EEXIT, "bad mode to -m: %o", lfmode); 113 printf("** lost+found creation mode %o\n", lfmode); 114 break; 115 116 case 'n': 117 case 'N': 118 nflag++; 119 yflag = 0; 120 break; 121 122 case 'y': 123 case 'Y': 124 yflag++; 125 nflag = 0; 126 break; 127 128 default: 129 errx(EEXIT, "%c option?", ch); 130 } 131 } 132 argc -= optind; 133 argv += optind; 134 if (signal(SIGINT, SIG_IGN) != SIG_IGN) 135 (void)signal(SIGINT, catch); 136 if (preen) 137 (void)signal(SIGQUIT, catchquit); 138 /* 139 * Push up our allowed memory limit so we can cope 140 * with huge filesystems. 141 */ 142 if (getrlimit(RLIMIT_DATA, &rlimit) == 0) { 143 rlimit.rlim_cur = rlimit.rlim_max; 144 (void)setrlimit(RLIMIT_DATA, &rlimit); 145 } 146 if (argc) { 147 while (argc-- > 0) { 148 char *path = blockcheck(*argv); 149 150 if (path == NULL) 151 pfatal("Can't check %s\n", *argv); 152 else 153 (void)checkfilesys(path, 0, 0L, 0); 154 ++argv; 155 } 156 exit(0); 157 } 158 ret = checkfstab(preen, maxrun, docheck, checkfilesys); 159 if (returntosingle) 160 exit(2); 161 exit(ret); 162 } 163 164 static int 165 argtoi(flag, req, str, base) 166 int flag; 167 char *req, *str; 168 int base; 169 { 170 char *cp; 171 int ret; 172 173 ret = (int)strtol(str, &cp, base); 174 if (cp == str || *cp) 175 errx(EEXIT, "-%c flag requires a %s", flag, req); 176 return (ret); 177 } 178 179 /* 180 * Determine whether a filesystem should be checked. 181 */ 182 static int 183 docheck(fsp) 184 register struct fstab *fsp; 185 { 186 187 if (strcmp(fsp->fs_vfstype, "ufs") || 188 (strcmp(fsp->fs_type, FSTAB_RW) && 189 strcmp(fsp->fs_type, FSTAB_RO)) || 190 fsp->fs_passno == 0) 191 return (0); 192 return (1); 193 } 194 195 /* 196 * Check the specified filesystem. 197 */ 198 /* ARGSUSED */ 199 static int 200 checkfilesys(filesys, mntpt, auxdata, child) 201 char *filesys, *mntpt; 202 long auxdata; 203 int child; 204 { 205 ufs_daddr_t n_ffree, n_bfree; 206 struct dups *dp; 207 struct statfs *mntbuf; 208 struct zlncnt *zlnp; 209 int cylno; 210 211 if (preen && child) 212 (void)signal(SIGQUIT, voidquit); 213 cdevname = filesys; 214 if (debug && preen) 215 pwarn("starting\n"); 216 switch (setup(filesys)) { 217 case 0: 218 if (preen) 219 pfatal("CAN'T CHECK FILE SYSTEM."); 220 return (0); 221 case -1: 222 pwarn("clean, %ld free ", sblock.fs_cstotal.cs_nffree + 223 sblock.fs_frag * sblock.fs_cstotal.cs_nbfree); 224 printf("(%d frags, %d blocks, %.1f%% fragmentation)\n", 225 sblock.fs_cstotal.cs_nffree, sblock.fs_cstotal.cs_nbfree, 226 sblock.fs_cstotal.cs_nffree * 100.0 / sblock.fs_dsize); 227 return (0); 228 } 229 230 /* 231 * Get the mount point information of the filesystem, if 232 * it is available. 233 */ 234 mntbuf = getmntpt(filesys); 235 236 /* 237 * Cleared if any questions answered no. Used to decide if 238 * the superblock should be marked clean. 239 */ 240 resolved = 1; 241 /* 242 * 1: scan inodes tallying blocks used 243 */ 244 if (preen == 0) { 245 printf("** Last Mounted on %s\n", sblock.fs_fsmnt); 246 if (mntbuf != NULL && mntbuf->f_flags & MNT_ROOTFS) 247 printf("** Root file system\n"); 248 printf("** Phase 1 - Check Blocks and Sizes\n"); 249 } 250 pass1(); 251 252 /* 253 * 1b: locate first references to duplicates, if any 254 */ 255 if (duplist) { 256 if (preen || usedsoftdep) 257 pfatal("INTERNAL ERROR: dups with -p"); 258 printf("** Phase 1b - Rescan For More DUPS\n"); 259 pass1b(); 260 } 261 262 /* 263 * 2: traverse directories from root to mark all connected directories 264 */ 265 if (preen == 0) 266 printf("** Phase 2 - Check Pathnames\n"); 267 pass2(); 268 269 /* 270 * 3: scan inodes looking for disconnected directories 271 */ 272 if (preen == 0) 273 printf("** Phase 3 - Check Connectivity\n"); 274 pass3(); 275 276 /* 277 * 4: scan inodes looking for disconnected files; check reference counts 278 */ 279 if (preen == 0) 280 printf("** Phase 4 - Check Reference Counts\n"); 281 pass4(); 282 283 /* 284 * 5: check and repair resource counts in cylinder groups 285 */ 286 if (preen == 0) 287 printf("** Phase 5 - Check Cyl groups\n"); 288 pass5(); 289 290 /* 291 * print out summary statistics 292 */ 293 n_ffree = sblock.fs_cstotal.cs_nffree; 294 n_bfree = sblock.fs_cstotal.cs_nbfree; 295 pwarn("%ld files, %ld used, %ld free ", 296 n_files, n_blks, n_ffree + sblock.fs_frag * n_bfree); 297 printf("(%d frags, %d blocks, %.1f%% fragmentation)\n", 298 n_ffree, n_bfree, n_ffree * 100.0 / sblock.fs_dsize); 299 if (debug && 300 (n_files -= maxino - ROOTINO - sblock.fs_cstotal.cs_nifree)) 301 printf("%d files missing\n", n_files); 302 if (debug) { 303 n_blks += sblock.fs_ncg * 304 (cgdmin(&sblock, 0) - cgsblock(&sblock, 0)); 305 n_blks += cgsblock(&sblock, 0) - cgbase(&sblock, 0); 306 n_blks += howmany(sblock.fs_cssize, sblock.fs_fsize); 307 if (n_blks -= maxfsblock - (n_ffree + sblock.fs_frag * n_bfree)) 308 printf("%d blocks missing\n", n_blks); 309 if (duplist != NULL) { 310 printf("The following duplicate blocks remain:"); 311 for (dp = duplist; dp; dp = dp->next) 312 printf(" %d,", dp->dup); 313 printf("\n"); 314 } 315 if (zlnhead != NULL) { 316 printf("The following zero link count inodes remain:"); 317 for (zlnp = zlnhead; zlnp; zlnp = zlnp->next) 318 printf(" %u,", zlnp->zlncnt); 319 printf("\n"); 320 } 321 } 322 zlnhead = (struct zlncnt *)0; 323 duplist = (struct dups *)0; 324 muldup = (struct dups *)0; 325 inocleanup(); 326 if (fsmodified) { 327 sblock.fs_time = time(NULL); 328 sbdirty(); 329 } 330 if (cvtlevel && sblk.b_dirty) { 331 /* 332 * Write out the duplicate super blocks 333 */ 334 for (cylno = 0; cylno < sblock.fs_ncg; cylno++) 335 bwrite(fswritefd, (char *)&sblock, 336 fsbtodb(&sblock, cgsblock(&sblock, cylno)), SBSIZE); 337 } 338 if (rerun) 339 resolved = 0; 340 341 /* 342 * Check to see if the filesystem is mounted read-write. 343 */ 344 if (mntbuf != NULL && (mntbuf->f_flags & MNT_RDONLY) == 0) 345 resolved = 0; 346 ckfini(resolved); 347 348 for (cylno = 0; cylno < sblock.fs_ncg; cylno++) 349 if (inostathead[cylno].il_stat != NULL) 350 free((char *)inostathead[cylno].il_stat); 351 free((char *)inostathead); 352 inostathead = NULL; 353 if (fsmodified && !preen) 354 printf("\n***** FILE SYSTEM WAS MODIFIED *****\n"); 355 if (rerun) 356 printf("\n***** PLEASE RERUN FSCK *****\n"); 357 if (mntbuf != NULL) { 358 struct ufs_args args; 359 int ret; 360 /* 361 * We modified a mounted filesystem. Do a mount update on 362 * it unless it is read-write, so we can continue using it 363 * as safely as possible. 364 */ 365 if (mntbuf->f_flags & MNT_RDONLY) { 366 args.fspec = 0; 367 args.export.ex_flags = 0; 368 args.export.ex_root = 0; 369 ret = mount("ufs", mntbuf->f_mntonname, 370 mntbuf->f_flags | MNT_UPDATE | MNT_RELOAD, &args); 371 if (ret == 0) 372 return (0); 373 pwarn("mount reload of '%s' failed: %s\n\n", 374 mntbuf->f_mntonname, strerror(errno)); 375 } 376 if (!fsmodified) 377 return (0); 378 if (!preen) 379 printf("\n***** REBOOT NOW *****\n"); 380 sync(); 381 return (4); 382 } 383 return (0); 384 } 385 386 /* 387 * Get the directory that the device is mounted on. 388 */ 389 static struct statfs * 390 getmntpt(name) 391 const char *name; 392 { 393 struct stat devstat, mntdevstat; 394 char device[sizeof(_PATH_DEV) - 1 + MNAMELEN]; 395 char *devname; 396 struct statfs *mntbuf; 397 int i, mntsize; 398 399 if (stat(name, &devstat) != 0 || 400 !(S_ISCHR(devstat.st_mode) || S_ISBLK(devstat.st_mode))) 401 return (NULL); 402 mntsize = getmntinfo(&mntbuf, MNT_NOWAIT); 403 for (i = 0; i < mntsize; i++) { 404 if (strcmp(mntbuf[i].f_fstypename, "ufs") != 0) 405 continue; 406 devname = mntbuf[i].f_mntfromname; 407 if (*devname != '/') { 408 strcpy(device, _PATH_DEV); 409 strcat(device, devname); 410 devname = device; 411 } 412 if (stat(devname, &mntdevstat) == 0 && 413 mntdevstat.st_rdev == devstat.st_rdev) 414 return (&mntbuf[i]); 415 } 416 return (NULL); 417 } 418