fsck.c revision 1.21
1 /* $NetBSD: fsck.c,v 1.21 1999/04/22 04:20:53 abs Exp $ */ 2 3 /* 4 * Copyright (c) 1996 Christos Zoulas. All rights reserved. 5 * Copyright (c) 1980, 1989, 1993, 1994 6 * The Regents of the University of California. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * From: @(#)mount.c 8.19 (Berkeley) 4/19/94 37 * From: NetBSD: mount.c,v 1.24 1995/11/18 03:34:29 cgd Exp 38 * 39 */ 40 41 #include <sys/cdefs.h> 42 #ifndef lint 43 __RCSID("$NetBSD: fsck.c,v 1.21 1999/04/22 04:20:53 abs Exp $"); 44 #endif /* not lint */ 45 46 #include <sys/param.h> 47 #include <sys/mount.h> 48 #include <sys/queue.h> 49 #include <sys/wait.h> 50 #define FSTYPENAMES 51 #define FSCKNAMES 52 #include <sys/disklabel.h> 53 #include <sys/ioctl.h> 54 55 #include <err.h> 56 #include <errno.h> 57 #include <fstab.h> 58 #include <fcntl.h> 59 #include <paths.h> 60 #include <signal.h> 61 #include <stdio.h> 62 #include <stdlib.h> 63 #include <string.h> 64 #include <unistd.h> 65 66 #include "pathnames.h" 67 #include "fsutil.h" 68 69 static enum { IN_LIST, NOT_IN_LIST } which = NOT_IN_LIST; 70 71 TAILQ_HEAD(fstypelist, entry) opthead, selhead; 72 73 struct entry { 74 char *type; 75 char *options; 76 TAILQ_ENTRY(entry) entries; 77 }; 78 79 static int maxrun = 0; 80 static char *options = NULL; 81 static int flags = 0; 82 83 int main __P((int, char *[])); 84 85 static int checkfs __P((const char *, const char *, const char *, void *, 86 pid_t *)); 87 static int selected __P((const char *)); 88 static void addoption __P((char *)); 89 static const char *getoptions __P((const char *)); 90 static void addentry __P((struct fstypelist *, const char *, const char *)); 91 static void maketypelist __P((char *)); 92 static void catopt __P((char **, const char *)); 93 static void mangle __P((char *, int *, const char ***, int *)); 94 static const char *getfslab __P((const char *)); 95 static void usage __P((void)); 96 static void *isok __P((struct fstab *)); 97 98 int 99 main(argc, argv) 100 int argc; 101 char *argv[]; 102 { 103 struct fstab *fs; 104 int i, rval = 0; 105 const char *vfstype = NULL; 106 char globopt[3]; 107 108 globopt[0] = '-'; 109 globopt[2] = '\0'; 110 111 TAILQ_INIT(&selhead); 112 TAILQ_INIT(&opthead); 113 114 while ((i = getopt(argc, argv, "dvpfnyl:t:T:")) != -1) 115 switch (i) { 116 case 'd': 117 flags |= CHECK_DEBUG; 118 break; 119 120 case 'v': 121 flags |= CHECK_VERBOSE; 122 break; 123 124 case 'p': 125 flags |= CHECK_PREEN; 126 /*FALLTHROUGH*/ 127 case 'n': 128 case 'f': 129 case 'y': 130 globopt[1] = i; 131 catopt(&options, globopt); 132 break; 133 134 case 'l': 135 maxrun = atoi(optarg); 136 break; 137 138 case 'T': 139 if (*optarg) 140 addoption(optarg); 141 break; 142 143 case 't': 144 if (selhead.tqh_first != NULL) 145 errx(1, "only one -t option may be specified."); 146 147 maketypelist(optarg); 148 vfstype = optarg; 149 break; 150 151 case '?': 152 default: 153 usage(); 154 /* NOTREACHED */ 155 } 156 157 argc -= optind; 158 argv += optind; 159 160 if (argc == 0) 161 return checkfstab(flags, maxrun, isok, checkfs); 162 163 #define BADTYPE(type) \ 164 (strcmp(type, FSTAB_RO) && \ 165 strcmp(type, FSTAB_RW) && strcmp(type, FSTAB_RQ)) 166 167 168 for (; argc--; argv++) { 169 const char *spec, *type, *cp; 170 char device[MAXPATHLEN]; 171 172 spec = *argv; 173 cp = strrchr(spec, '/'); 174 if (cp == 0) { 175 (void)snprintf(device, sizeof(device), "%s%s", 176 _PATH_DEV, spec); 177 spec = device; 178 } 179 if ((fs = getfsfile(spec)) == NULL && 180 (fs = getfsspec(spec)) == NULL) { 181 if (vfstype == NULL) 182 vfstype = getfslab(spec); 183 type = vfstype; 184 } 185 else { 186 spec = fs->fs_spec; 187 type = fs->fs_vfstype; 188 if (BADTYPE(fs->fs_type)) 189 errx(1, "%s has unknown file system type.", 190 spec); 191 } 192 193 rval |= checkfs(type, blockcheck(spec), *argv, NULL, NULL); 194 } 195 196 return rval; 197 } 198 199 200 static void * 201 isok(fs) 202 struct fstab *fs; 203 { 204 if (fs->fs_passno == 0) 205 return NULL; 206 207 if (BADTYPE(fs->fs_type)) 208 return NULL; 209 210 if (!selected(fs->fs_vfstype)) 211 return NULL; 212 213 return fs; 214 } 215 216 217 static int 218 checkfs(vfstype, spec, mntpt, auxarg, pidp) 219 const char *vfstype, *spec, *mntpt; 220 void *auxarg; 221 pid_t *pidp; 222 { 223 /* List of directories containing fsck_xxx subcommands. */ 224 static const char *edirs[] = { 225 _PATH_SBIN, 226 _PATH_USRSBIN, 227 NULL 228 }; 229 const char **argv, **edir; 230 pid_t pid; 231 int argc, i, status, maxargc; 232 char *optbuf, execname[MAXPATHLEN + 1], execbase[MAXPATHLEN]; 233 const char *extra = getoptions(vfstype); 234 235 #ifdef __GNUC__ 236 /* Avoid vfork clobbering */ 237 (void) &optbuf; 238 (void) &vfstype; 239 #endif 240 241 if (!strcmp(vfstype, "ufs")) 242 vfstype = MOUNT_UFS; 243 244 optbuf = NULL; 245 if (options) 246 catopt(&optbuf, options); 247 if (extra) 248 catopt(&optbuf, extra); 249 250 maxargc = 64; 251 argv = emalloc(sizeof(char *) * maxargc); 252 253 (void) snprintf(execbase, sizeof(execbase), "fsck_%s", vfstype); 254 argc = 0; 255 argv[argc++] = execbase; 256 if (optbuf) 257 mangle(optbuf, &argc, &argv, &maxargc); 258 argv[argc++] = spec; 259 argv[argc] = NULL; 260 261 if (flags & (CHECK_DEBUG|CHECK_VERBOSE)) { 262 (void)printf("start %s %swait", mntpt, 263 pidp ? "no" : ""); 264 for (i = 0; i < argc; i++) 265 (void)printf(" %s", argv[i]); 266 (void)printf("\n"); 267 } 268 269 switch (pid = vfork()) { 270 case -1: /* Error. */ 271 warn("vfork"); 272 if (optbuf) 273 free(optbuf); 274 return (1); 275 276 case 0: /* Child. */ 277 if (flags & CHECK_DEBUG) 278 _exit(0); 279 280 /* Go find an executable. */ 281 edir = edirs; 282 do { 283 (void)snprintf(execname, 284 sizeof(execname), "%s/%s", *edir, execbase); 285 execv(execname, (char * const *)argv); 286 if (errno != ENOENT) { 287 if (spec) 288 warn("exec %s for %s", execname, spec); 289 else 290 warn("exec %s", execname); 291 } 292 } while (*++edir != NULL); 293 294 if (errno == ENOENT) { 295 if (spec) 296 warn("exec %s for %s", execname, spec); 297 else 298 warn("exec %s", execname); 299 } 300 _exit(1); 301 /* NOTREACHED */ 302 303 default: /* Parent. */ 304 if (optbuf) 305 free(optbuf); 306 307 if (pidp) { 308 *pidp = pid; 309 return 0; 310 } 311 312 if (waitpid(pid, &status, 0) < 0) { 313 warn("waitpid"); 314 return (1); 315 } 316 317 if (WIFEXITED(status)) { 318 if (WEXITSTATUS(status) != 0) 319 return (WEXITSTATUS(status)); 320 } 321 else if (WIFSIGNALED(status)) { 322 warnx("%s: %s", spec, strsignal(WTERMSIG(status))); 323 return (1); 324 } 325 break; 326 } 327 328 return (0); 329 } 330 331 332 static int 333 selected(type) 334 const char *type; 335 { 336 struct entry *e; 337 338 /* If no type specified, it's always selected. */ 339 for (e = selhead.tqh_first; e != NULL; e = e->entries.tqe_next) 340 if (!strncmp(e->type, type, MFSNAMELEN)) 341 return which == IN_LIST ? 1 : 0; 342 343 return which == IN_LIST ? 0 : 1; 344 } 345 346 347 static const char * 348 getoptions(type) 349 const char *type; 350 { 351 struct entry *e; 352 353 for (e = opthead.tqh_first; e != NULL; e = e->entries.tqe_next) 354 if (!strncmp(e->type, type, MFSNAMELEN)) 355 return e->options; 356 return ""; 357 } 358 359 360 static void 361 addoption(optstr) 362 char *optstr; 363 { 364 char *newoptions; 365 struct entry *e; 366 367 if ((newoptions = strchr(optstr, ':')) == NULL) 368 errx(1, "Invalid option string"); 369 370 *newoptions++ = '\0'; 371 372 for (e = opthead.tqh_first; e != NULL; e = e->entries.tqe_next) 373 if (!strncmp(e->type, optstr, MFSNAMELEN)) { 374 catopt(&e->options, newoptions); 375 return; 376 } 377 addentry(&opthead, optstr, newoptions); 378 } 379 380 381 static void 382 addentry(list, type, opts) 383 struct fstypelist *list; 384 const char *type; 385 const char *opts; 386 { 387 struct entry *e; 388 389 e = emalloc(sizeof(struct entry)); 390 e->type = estrdup(type); 391 e->options = estrdup(opts); 392 TAILQ_INSERT_TAIL(list, e, entries); 393 } 394 395 396 static void 397 maketypelist(fslist) 398 char *fslist; 399 { 400 char *ptr; 401 402 if ((fslist == NULL) || (fslist[0] == '\0')) 403 errx(1, "empty type list"); 404 405 if (fslist[0] == 'n' && fslist[1] == 'o') { 406 fslist += 2; 407 which = NOT_IN_LIST; 408 } 409 else 410 which = IN_LIST; 411 412 while ((ptr = strsep(&fslist, ",")) != NULL) 413 addentry(&selhead, ptr, ""); 414 415 } 416 417 418 static void 419 catopt(sp, o) 420 char **sp; 421 const char *o; 422 { 423 char *s; 424 size_t i, j; 425 426 s = *sp; 427 if (s) { 428 i = strlen(s); 429 j = i + 1 + strlen(o) + 1; 430 s = erealloc(s, j); 431 (void)snprintf(s + i, j, ",%s", o); 432 } else 433 s = estrdup(o); 434 *sp = s; 435 } 436 437 438 static void 439 mangle(options, argcp, argvp, maxargcp) 440 char *options; 441 int *argcp, *maxargcp; 442 const char ***argvp; 443 { 444 char *p, *s; 445 int argc, maxargc; 446 const char **argv; 447 448 argc = *argcp; 449 argv = *argvp; 450 maxargc = *maxargcp; 451 452 for (s = options; (p = strsep(&s, ",")) != NULL;) { 453 /* Always leave space for one more argument and the NULL. */ 454 if (argc >= maxargc - 3) { 455 maxargc <<= 1; 456 argv = erealloc(argv, maxargc * sizeof(char *)); 457 } 458 if (*p != '\0') { 459 if (*p == '-') { 460 argv[argc++] = p; 461 p = strchr(p, '='); 462 if (p) { 463 *p = '\0'; 464 argv[argc++] = p+1; 465 } 466 } else { 467 argv[argc++] = "-o"; 468 argv[argc++] = p; 469 } 470 } 471 } 472 473 *argcp = argc; 474 *argvp = argv; 475 *maxargcp = maxargc; 476 } 477 478 479 const static char * 480 getfslab(str) 481 const char *str; 482 { 483 struct disklabel dl; 484 int fd; 485 char p; 486 const char *vfstype; 487 u_char t; 488 489 /* deduce the filesystem type from the disk label */ 490 if ((fd = open(str, O_RDONLY)) == -1) 491 err(1, "cannot open `%s'", str); 492 493 if (ioctl(fd, DIOCGDINFO, &dl) == -1) 494 err(1, "cannot get disklabel for `%s'", str); 495 496 (void) close(fd); 497 498 p = str[strlen(str) - 1]; 499 500 if ((p - 'a') >= dl.d_npartitions) 501 errx(1, "partition `%s' is not defined on disk", str); 502 503 if ((t = dl.d_partitions[p - 'a'].p_fstype) >= FSMAXTYPES) 504 errx(1, "partition `%s' is not of a legal vfstype", 505 str); 506 507 if ((vfstype = fscknames[t]) == NULL) 508 errx(1, "vfstype `%s' on partition `%s' is not supported", 509 fstypenames[t], str); 510 511 return vfstype; 512 } 513 514 515 static void 516 usage() 517 { 518 extern char *__progname; 519 static const char common[] = 520 "[-dpvlyn] [-T fstype:fsoptions] [-t fstype]"; 521 522 (void)fprintf(stderr, "Usage: %s %s [special|node]...\n", 523 __progname, common); 524 exit(1); 525 } 526
Indexes created Fri Sep 26 20:09:58 GMT 2025