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: src/sbin/fsck/main.c,v 1.21.2.1 2001/01/23 23:11:07 iedowse Exp $"; 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 signal(SIGINFO, infohandler); 139 /* 140 * Push up our allowed memory limit so we can cope 141 * with huge filesystems. 142 */ 143 if (getrlimit(RLIMIT_DATA, &rlimit) == 0) { 144 rlimit.rlim_cur = rlimit.rlim_max; 145 (void)setrlimit(RLIMIT_DATA, &rlimit); 146 } 147 if (argc) { 148 while (argc-- > 0) { 149 char *path = blockcheck(*argv); 150 151 if (path == NULL) 152 pfatal("Can't check %s\n", *argv); 153 else 154 (void)checkfilesys(path, 0, 0L, 0); 155 ++argv; 156 } 157 exit(0); 158 } 159 ret = checkfstab(preen, maxrun, docheck, checkfilesys); 160 if (returntosingle) 161 exit(2); 162 exit(ret); 163 } 164 165 static int 166 argtoi(flag, req, str, base) 167 int flag; 168 char *req, *str; 169 int base; 170 { 171 char *cp; 172 int ret; 173 174 ret = (int)strtol(str, &cp, base); 175 if (cp == str || *cp) 176 errx(EEXIT, "-%c flag requires a %s", flag, req); 177 return (ret); 178 } 179 180 /* 181 * Determine whether a filesystem should be checked. 182 */ 183 static int 184 docheck(fsp) 185 register struct fstab *fsp; 186 { 187 188 if (strcmp(fsp->fs_vfstype, "ufs") || 189 (strcmp(fsp->fs_type, FSTAB_RW) && 190 strcmp(fsp->fs_type, FSTAB_RO)) || 191 fsp->fs_passno == 0) 192 return (0); 193 return (1); 194 } 195 196 /* 197 * Check the specified filesystem. 198 */ 199 /* ARGSUSED */ 200 static int 201 checkfilesys(filesys, mntpt, auxdata, child) 202 char *filesys, *mntpt; 203 long auxdata; 204 int child; 205 { 206 ufs_daddr_t n_ffree, n_bfree; 207 struct dups *dp; 208 struct statfs *mntbuf; 209 struct zlncnt *zlnp; 210 int cylno; 211 212 if (preen && child) 213 (void)signal(SIGQUIT, voidquit); 214 cdevname = filesys; 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 return (0); 222 case -1: 223 pwarn("clean, %ld free ", sblock.fs_cstotal.cs_nffree + 224 sblock.fs_frag * sblock.fs_cstotal.cs_nbfree); 225 printf("(%d frags, %d blocks, %.1f%% fragmentation)\n", 226 sblock.fs_cstotal.cs_nffree, sblock.fs_cstotal.cs_nbfree, 227 sblock.fs_cstotal.cs_nffree * 100.0 / sblock.fs_dsize); 228 return (0); 229 } 230 got_siginfo = 0; 231 232 /* 233 * Get the mount point information of the filesystem, if 234 * it is available. 235 */ 236 mntbuf = getmntpt(filesys); 237 238 /* 239 * Cleared if any questions answered no. Used to decide if 240 * the superblock should be marked clean. 241 */ 242 resolved = 1; 243 /* 244 * 1: scan inodes tallying blocks used 245 */ 246 if (preen == 0) { 247 printf("** Last Mounted on %s\n", sblock.fs_fsmnt); 248 if (mntbuf != NULL && mntbuf->f_flags & MNT_ROOTFS) 249 printf("** Root file system\n"); 250 printf("** Phase 1 - Check Blocks and Sizes\n"); 251 } 252 pass1(); 253 254 /* 255 * 1b: locate first references to duplicates, if any 256 */ 257 if (duplist) { 258 if (preen || usedsoftdep) 259 pfatal("INTERNAL ERROR: dups with -p"); 260 printf("** Phase 1b - Rescan For More DUPS\n"); 261 pass1b(); 262 } 263 264 /* 265 * 2: traverse directories from root to mark all connected directories 266 */ 267 if (preen == 0) 268 printf("** Phase 2 - Check Pathnames\n"); 269 pass2(); 270 271 /* 272 * 3: scan inodes looking for disconnected directories 273 */ 274 if (preen == 0) 275 printf("** Phase 3 - Check Connectivity\n"); 276 pass3(); 277 278 /* 279 * 4: scan inodes looking for disconnected files; check reference counts 280 */ 281 if (preen == 0) 282 printf("** Phase 4 - Check Reference Counts\n"); 283 pass4(); 284 285 /* 286 * 5: check and repair resource counts in cylinder groups 287 */ 288 if (preen == 0) 289 printf("** Phase 5 - Check Cyl groups\n"); 290 pass5(); 291 292 /* 293 * print out summary statistics 294 */ 295 n_ffree = sblock.fs_cstotal.cs_nffree; 296 n_bfree = sblock.fs_cstotal.cs_nbfree; 297 pwarn("%ld files, %ld used, %ld free ", 298 n_files, n_blks, n_ffree + sblock.fs_frag * n_bfree); 299 printf("(%d frags, %d blocks, %.1f%% fragmentation)\n", 300 n_ffree, n_bfree, n_ffree * 100.0 / sblock.fs_dsize); 301 if (debug && 302 (n_files -= maxino - ROOTINO - sblock.fs_cstotal.cs_nifree)) 303 printf("%d files missing\n", n_files); 304 if (debug) { 305 n_blks += sblock.fs_ncg * 306 (cgdmin(&sblock, 0) - cgsblock(&sblock, 0)); 307 n_blks += cgsblock(&sblock, 0) - cgbase(&sblock, 0); 308 n_blks += howmany(sblock.fs_cssize, sblock.fs_fsize); 309 if (n_blks -= maxfsblock - (n_ffree + sblock.fs_frag * n_bfree)) 310 printf("%d blocks missing\n", n_blks); 311 if (duplist != NULL) { 312 printf("The following duplicate blocks remain:"); 313 for (dp = duplist; dp; dp = dp->next) 314 printf(" %d,", dp->dup); 315 printf("\n"); 316 } 317 if (zlnhead != NULL) { 318 printf("The following zero link count inodes remain:"); 319 for (zlnp = zlnhead; zlnp; zlnp = zlnp->next) 320 printf(" %u,", zlnp->zlncnt); 321 printf("\n"); 322 } 323 } 324 zlnhead = (struct zlncnt *)0; 325 duplist = (struct dups *)0; 326 muldup = (struct dups *)0; 327 inocleanup(); 328 if (fsmodified) { 329 sblock.fs_time = time(NULL); 330 sbdirty(); 331 } 332 if (cvtlevel && sblk.b_dirty) { 333 /* 334 * Write out the duplicate super blocks 335 */ 336 for (cylno = 0; cylno < sblock.fs_ncg; cylno++) 337 bwrite(fswritefd, (char *)&sblock, 338 fsbtodb(&sblock, cgsblock(&sblock, cylno)), SBSIZE); 339 } 340 if (rerun) 341 resolved = 0; 342 343 /* 344 * Check to see if the filesystem is mounted read-write. 345 */ 346 if (mntbuf != NULL && (mntbuf->f_flags & MNT_RDONLY) == 0) 347 resolved = 0; 348 ckfini(resolved); 349 350 for (cylno = 0; cylno < sblock.fs_ncg; cylno++) 351 if (inostathead[cylno].il_stat != NULL) 352 free((char *)inostathead[cylno].il_stat); 353 free((char *)inostathead); 354 inostathead = NULL; 355 if (fsmodified && !preen) 356 printf("\n***** FILE SYSTEM WAS MODIFIED *****\n"); 357 if (rerun) 358 printf("\n***** PLEASE RERUN FSCK *****\n"); 359 if (mntbuf != NULL) { 360 struct ufs_args args; 361 int ret; 362 /* 363 * We modified a mounted filesystem. Do a mount update on 364 * it unless it is read-write, so we can continue using it 365 * as safely as possible. 366 */ 367 if (mntbuf->f_flags & MNT_RDONLY) { 368 args.fspec = 0; 369 args.export.ex_flags = 0; 370 args.export.ex_root = 0; 371 ret = mount("ufs", mntbuf->f_mntonname, 372 mntbuf->f_flags | MNT_UPDATE | MNT_RELOAD, &args); 373 if (ret == 0) 374 return (0); 375 pwarn("mount reload of '%s' failed: %s\n\n", 376 mntbuf->f_mntonname, strerror(errno)); 377 } 378 if (!fsmodified) 379 return (0); 380 if (!preen) 381 printf("\n***** REBOOT NOW *****\n"); 382 sync(); 383 return (4); 384 } 385 return (0); 386 } 387 388 /* 389 * Get the directory that the device is mounted on. 390 */ 391 static struct statfs * 392 getmntpt(name) 393 const char *name; 394 { 395 struct stat devstat, mntdevstat; 396 char device[sizeof(_PATH_DEV) - 1 + MNAMELEN]; 397 char *devname; 398 struct statfs *mntbuf; 399 int i, mntsize; 400 401 if (stat(name, &devstat) != 0 || 402 !(S_ISCHR(devstat.st_mode) || S_ISBLK(devstat.st_mode))) 403 return (NULL); 404 mntsize = getmntinfo(&mntbuf, MNT_NOWAIT); 405 for (i = 0; i < mntsize; i++) { 406 if (strcmp(mntbuf[i].f_fstypename, "ufs") != 0) 407 continue; 408 devname = mntbuf[i].f_mntfromname; 409 if (*devname != '/') { 410 strcpy(device, _PATH_DEV); 411 strcat(device, devname); 412 devname = device; 413 } 414 if (stat(devname, &mntdevstat) == 0 && 415 mntdevstat.st_rdev == devstat.st_rdev) 416 return (&mntbuf[i]); 417 } 418 return (NULL); 419 } 420