1 /* $OpenBSD: mount.c,v 1.74 2020/12/11 06:29:43 robert Exp $ */ 2 /* $NetBSD: mount.c,v 1.24 1995/11/18 03:34:29 cgd Exp $ */ 3 4 /* 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. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 #include <sys/types.h> 34 #include <sys/mount.h> 35 #include <sys/socket.h> 36 #include <sys/wait.h> 37 38 #include <nfs/rpcv2.h> 39 #include <nfs/nfsproto.h> 40 #include <nfs/nfs.h> 41 42 #include <err.h> 43 #include <errno.h> 44 #include <fstab.h> 45 #include <netdb.h> 46 #include <signal.h> 47 #include <stdio.h> 48 #include <stdlib.h> 49 #include <string.h> 50 #include <unistd.h> 51 #include <limits.h> 52 #include <util.h> 53 54 #include "pathnames.h" 55 56 int debug, verbose, skip; 57 char **typelist = NULL; 58 enum { NONET_FILTER, NET_FILTER } filter = NONET_FILTER; 59 60 int selected(const char *); 61 char *catopt(char *, const char *); 62 char *flags2opts(u_int32_t); 63 struct statfs 64 *getmntpt(const char *); 65 int hasopt(const char *, const char *); 66 void maketypelist(char *); 67 void mangle(char *, int *, const char **, int); 68 int mountfs(const char *, const char *, const char *, const char *, 69 const char *, int); 70 void prmount(struct statfs *); 71 int disklabelcheck(struct fstab *); 72 __dead void usage(void); 73 74 /* Map from mount options to printable formats. */ 75 static struct opt { 76 int o_opt; 77 int o_silent; 78 const char *o_name; 79 const char *o_optname; 80 } optnames[] = { 81 { MNT_ASYNC, 0, "asynchronous", "async" }, 82 { MNT_DEFEXPORTED, 1, "exported to the world", "" }, 83 { MNT_EXPORTED, 0, "NFS exported", "" }, 84 { MNT_EXPORTANON, 1, "anon uid mapping", "" }, 85 { MNT_EXRDONLY, 1, "exported read-only", "" }, 86 { MNT_LOCAL, 0, "local", "" }, 87 { MNT_NOATIME, 0, "noatime", "noatime" }, 88 { MNT_NODEV, 0, "nodev", "nodev" }, 89 { MNT_NOEXEC, 0, "noexec", "noexec" }, 90 { MNT_NOSUID, 0, "nosuid", "nosuid" }, 91 { MNT_NOPERM, 0, "noperm", "noperm" }, 92 { MNT_WXALLOWED, 0, "wxallowed", "wxallowed" }, 93 { MNT_QUOTA, 0, "with quotas", "" }, 94 { MNT_RDONLY, 0, "read-only", "ro" }, 95 { MNT_ROOTFS, 1, "root file system", "" }, 96 { MNT_SYNCHRONOUS, 0, "synchronous", "sync" }, 97 { MNT_SOFTDEP, 0, "softdep", "softdep" }, 98 { 0, 0, "", "" } 99 }; 100 101 int 102 main(int argc, char * const argv[]) 103 { 104 const char *mntonname, *vfstype; 105 struct fstab *fs; 106 struct statfs *mntbuf; 107 FILE *mountdfp; 108 pid_t pid; 109 int all, ch, forceall, i, mntsize, rval, new; 110 char *options, mntpath[PATH_MAX]; 111 112 all = forceall = 0; 113 options = NULL; 114 vfstype = "ffs"; 115 while ((ch = getopt(argc, argv, "AadfNo:rswt:uv")) != -1) 116 switch (ch) { 117 case 'A': 118 all = forceall = 1; 119 break; 120 case 'a': 121 all = 1; 122 break; 123 case 'd': 124 debug = 1; 125 break; 126 case 'f': 127 if (!hasopt(options, "force")) 128 options = catopt(options, "force"); 129 break; 130 case 'N': 131 filter = NET_FILTER; 132 break; 133 case 'o': 134 if (*optarg) 135 options = catopt(options, optarg); 136 break; 137 case 'r': 138 if (!hasopt(options, "ro")) 139 options = catopt(options, "ro"); 140 break; 141 case 's': 142 skip = 1; 143 break; 144 case 't': 145 if (typelist != NULL) 146 errx(1, "only one -t option may be specified."); 147 maketypelist(optarg); 148 vfstype = optarg; 149 break; 150 case 'u': 151 if (!hasopt(options, "update")) 152 options = catopt(options, "update"); 153 break; 154 case 'v': 155 verbose = 1; 156 break; 157 case 'w': 158 if (!hasopt(options, "rw")) 159 options = catopt(options, "rw"); 160 break; 161 case '?': 162 default: 163 usage(); 164 } 165 argc -= optind; 166 argv += optind; 167 168 if (typelist == NULL && argc == 2) { 169 /* 170 * If -t flag has not been specified, and spec contains either 171 * a ':' or a '@' then assume that an NFS filesystem is being 172 * specified ala Sun. If not, check the disklabel for a 173 * known filesystem type. 174 */ 175 if (strpbrk(argv[0], ":@") != NULL) 176 vfstype = "nfs"; 177 else { 178 char *labelfs = readlabelfs(argv[0], 0); 179 if (labelfs != NULL) 180 vfstype = labelfs; 181 } 182 } 183 184 if (pledge("stdio rpath disklabel proc exec", NULL) == -1) 185 err(1, "pledge"); 186 187 #define BADTYPE(type) \ 188 (strcmp(type, FSTAB_RO) && \ 189 strcmp(type, FSTAB_RW) && strcmp(type, FSTAB_RQ)) 190 191 rval = 0; 192 new = 0; 193 switch (argc) { 194 case 0: 195 if (all) 196 while ((fs = getfsent()) != NULL) { 197 if (BADTYPE(fs->fs_type)) 198 continue; 199 switch (filter) { 200 case NET_FILTER: 201 if (!hasopt(fs->fs_mntops, "net")) 202 continue; 203 break; 204 case NONET_FILTER: 205 if (hasopt(fs->fs_mntops, "net")) 206 continue; 207 break; 208 } 209 if (!selected(fs->fs_vfstype)) 210 continue; 211 if (hasopt(fs->fs_mntops, "noauto")) 212 continue; 213 if (disklabelcheck(fs)) 214 continue; 215 if (mountfs(fs->fs_vfstype, fs->fs_spec, 216 fs->fs_file, options, 217 fs->fs_mntops, !forceall)) 218 rval = 1; 219 else 220 ++new; 221 } 222 else { 223 if ((mntsize = getmntinfo(&mntbuf, MNT_NOWAIT)) == 0) 224 err(1, "getmntinfo"); 225 for (i = 0; i < mntsize; i++) { 226 if (!selected(mntbuf[i].f_fstypename)) 227 continue; 228 prmount(&mntbuf[i]); 229 } 230 return (rval); 231 } 232 break; 233 case 1: 234 if (typelist != NULL) 235 usage(); 236 237 if (realpath(*argv, mntpath) == NULL) 238 strlcpy(mntpath, *argv, sizeof(mntpath)); 239 if (hasopt(options, "update")) { 240 if ((mntbuf = getmntpt(mntpath)) == NULL) 241 errx(1, 242 "unknown special file or file system %s.", 243 mntpath); 244 if ((mntbuf->f_flags & MNT_ROOTFS) && 245 !strcmp(mntbuf->f_mntfromname, "root_device")) { 246 /* Lookup fstab for name of root device. */ 247 fs = getfsfile(mntbuf->f_mntonname); 248 if (fs == NULL) 249 errx(1, 250 "can't find fstab entry for %s.", 251 mntpath); 252 } else { 253 if ((fs = malloc(sizeof(*fs))) == NULL) 254 err(1, NULL); 255 fs->fs_vfstype = mntbuf->f_fstypename; 256 fs->fs_spec = mntbuf->f_mntfromname; 257 } 258 /* 259 * It's an update, ignore the fstab file options. 260 * Get the current options, so we can change only 261 * the options which given via a command line. 262 */ 263 fs->fs_mntops = flags2opts(mntbuf->f_flags); 264 mntonname = mntbuf->f_mntonname; 265 } else { 266 if ((fs = getfsfile(mntpath)) == NULL && 267 (fs = getfsspec(mntpath)) == NULL) 268 errx(1, "can't find fstab entry for %s.", 269 mntpath); 270 if (BADTYPE(fs->fs_type)) 271 errx(1, "%s has unknown file system type.", 272 mntpath); 273 mntonname = fs->fs_file; 274 } 275 rval = mountfs(fs->fs_vfstype, fs->fs_spec, 276 mntonname, options, fs->fs_mntops, skip); 277 break; 278 case 2: 279 rval = mountfs(vfstype, argv[0], argv[1], options, NULL, skip); 280 break; 281 default: 282 usage(); 283 } 284 285 /* 286 * If the mount was successfully, and done by root, tell mountd the 287 * good news. Pid checks are probably unnecessary, but don't hurt. 288 * XXX This should be done from kernel. 289 */ 290 if ((rval == 0 || new) && getuid() == 0 && 291 (mountdfp = fopen(_PATH_MOUNTDPID, "r")) != NULL) { 292 if (fscanf(mountdfp, "%d", &pid) == 1 && 293 pid > 0 && kill(pid, SIGHUP) == -1 && errno != ESRCH) 294 err(1, "signal mountd"); 295 (void)fclose(mountdfp); 296 } 297 298 return (rval); 299 } 300 301 int 302 hasopt(const char *mntopts, const char *option) 303 { 304 int found; 305 char *opt, *optbuf; 306 307 if (mntopts == NULL) 308 return (0); 309 if ((optbuf = strdup(mntopts)) == NULL) 310 err(1, NULL); 311 found = 0; 312 for (opt = optbuf; !found && opt != NULL; strsep(&opt, ",")) 313 found = !strncmp(opt, option, strlen(option)); 314 free(optbuf); 315 return (found); 316 } 317 318 /* 319 * Convert mount(2) flags to list of mount(8) options. 320 */ 321 char* 322 flags2opts(u_int32_t flags) 323 { 324 char *optlist; 325 struct opt *p; 326 327 optlist = NULL; 328 for (p = optnames; p->o_opt; p++) { 329 if (flags & p->o_opt && *p->o_optname) 330 optlist = catopt(optlist, p->o_optname); 331 } 332 333 return(optlist); 334 } 335 336 int 337 mountfs(const char *vfstype, const char *spec, const char *name, 338 const char *options, const char *mntopts, int skipmounted) 339 { 340 char *cp; 341 342 /* List of directories containing mount_xxx subcommands. */ 343 static const char *edirs[] = { 344 _PATH_SBIN, 345 _PATH_USRSBIN, 346 NULL 347 }; 348 const char **argv, **edir; 349 struct statfs sf; 350 pid_t pid; 351 int argc, i, status, argvsize; 352 char *optbuf, execname[PATH_MAX], mntpath[PATH_MAX]; 353 354 if (realpath(name, mntpath) == NULL) { 355 warn("realpath %s", name); 356 return (1); 357 } 358 359 name = mntpath; 360 361 if (mntopts == NULL) 362 mntopts = ""; 363 364 if (options == NULL) { 365 if (*mntopts == '\0') 366 options = "rw"; 367 else { 368 options = mntopts; 369 mntopts = ""; 370 } 371 } 372 373 /* options follows after mntopts, so they get priority over mntopts */ 374 if ((cp = strdup(mntopts)) == NULL) 375 err(1, NULL); 376 optbuf = catopt(cp, options); 377 378 if (strcmp(name, "/") == 0) { 379 if (!hasopt(optbuf, "update")) 380 optbuf = catopt(optbuf, "update"); 381 } else if (skipmounted) { 382 if (statfs(name, &sf) == -1) { 383 warn("statfs %s", name); 384 return (1); 385 } 386 /* XXX can't check f_mntfromname, thanks to mfs, etc. */ 387 if (strncmp(name, sf.f_mntonname, MNAMELEN) == 0 && 388 strncmp(vfstype, sf.f_fstypename, MFSNAMELEN) == 0) { 389 if (verbose) { 390 printf("%s", sf.f_mntfromname); 391 if (strncmp(sf.f_mntfromname, 392 sf.f_mntfromspec, MNAMELEN) != 0) 393 printf(" (%s)", sf.f_mntfromspec); 394 printf(" on %s type %.*s: %s\n", 395 sf.f_mntonname, 396 MFSNAMELEN, sf.f_fstypename, 397 "already mounted"); 398 } 399 return (0); 400 } 401 } 402 403 argvsize = 64; 404 if((argv = reallocarray(NULL, argvsize, sizeof(char *))) == NULL) 405 err(1, NULL); 406 argc = 0; 407 argv[argc++] = NULL; /* this should be a full path name */ 408 mangle(optbuf, &argc, argv, argvsize - 4); 409 argv[argc++] = spec; 410 argv[argc++] = name; 411 argv[argc] = NULL; 412 413 if (debug) { 414 (void)printf("exec: mount_%s", vfstype); 415 for (i = 1; i < argc; i++) 416 (void)printf(" %s", argv[i]); 417 (void)printf("\n"); 418 free(optbuf); 419 free(argv); 420 return (0); 421 } 422 423 switch ((pid = fork())) { 424 case -1: /* Error. */ 425 warn("fork"); 426 free(optbuf); 427 free(argv); 428 return (1); 429 case 0: /* Child. */ 430 /* Go find an executable. */ 431 edir = edirs; 432 do { 433 (void)snprintf(execname, 434 sizeof(execname), "%s/mount_%s", *edir, vfstype); 435 argv[0] = execname; 436 execv(execname, (char * const *)argv); 437 if (errno != ENOENT) 438 warn("exec %s for %s", execname, name); 439 } while (*++edir != NULL); 440 441 if (errno == ENOENT) 442 warn("no mount helper program found for %s", vfstype); 443 _exit(1); 444 default: /* Parent. */ 445 free(optbuf); 446 free(argv); 447 448 if (waitpid(pid, &status, 0) == -1) { 449 warn("waitpid"); 450 return (1); 451 } 452 453 if (WIFEXITED(status)) { 454 if (WEXITSTATUS(status) != 0) 455 return (WEXITSTATUS(status)); 456 } else if (WIFSIGNALED(status)) { 457 warnx("%s: %s", name, strsignal(WTERMSIG(status))); 458 return (1); 459 } 460 461 if (verbose) { 462 if (statfs(name, &sf) == -1) { 463 warn("statfs %s", name); 464 return (1); 465 } 466 prmount(&sf); 467 } 468 break; 469 } 470 471 return (0); 472 } 473 474 void 475 prmount(struct statfs *sf) 476 { 477 int flags; 478 struct opt *o; 479 int f = 0; 480 481 printf("%s", sf->f_mntfromname); 482 if (verbose && 483 strncmp(sf->f_mntfromname, sf->f_mntfromspec, MNAMELEN) != 0) 484 printf(" (%s)", sf->f_mntfromspec); 485 printf(" on %s type %.*s", sf->f_mntonname, 486 MFSNAMELEN, sf->f_fstypename); 487 488 flags = sf->f_flags & MNT_VISFLAGMASK; 489 if (verbose && !(flags & MNT_RDONLY)) 490 (void)printf("%s%s", !f++ ? " (" : ", ", "rw"); 491 for (o = optnames; flags && o->o_opt; o++) 492 if (flags & o->o_opt) { 493 if (!o->o_silent) 494 (void)printf("%s%s", !f++ ? " (" : ", ", 495 o->o_name); 496 flags &= ~o->o_opt; 497 } 498 if (flags) 499 (void)printf("%sunknown flag%s %#x", !f++ ? " (" : ", ", 500 flags & (flags - 1) ? "s" : "", flags); 501 502 503 if (verbose) { 504 char buf[26]; 505 time_t t = sf->f_ctime; 506 507 ctime_r(&t, buf); 508 buf[24] = '\0'; 509 printf(", ctime=%s", buf); 510 } 511 512 /* 513 * Filesystem-specific options 514 * We only print the "interesting" values unless in verbose 515 * mode in order to keep the signal/noise ratio high. 516 */ 517 if (strcmp(sf->f_fstypename, MOUNT_NFS) == 0) { 518 struct protoent *pr; 519 struct nfs_args *nfs_args = &sf->mount_info.nfs_args; 520 521 (void)printf("%s%s", !f++ ? " (" : ", ", 522 (nfs_args->flags & NFSMNT_NFSV3) ? "v3" : "v2"); 523 if (nfs_args->proto && (pr = getprotobynumber(nfs_args->proto))) 524 (void)printf("%s%s", !f++ ? " (" : ", ", pr->p_name); 525 else 526 (void)printf("%s%s", !f++ ? " (" : ", ", 527 (nfs_args->sotype == SOCK_DGRAM) ? "udp" : "tcp"); 528 if (nfs_args->flags & NFSMNT_SOFT) 529 (void)printf("%s%s", !f++ ? " (" : ", ", "soft"); 530 else if (verbose) 531 (void)printf("%s%s", !f++ ? " (" : ", ", "hard"); 532 if (nfs_args->flags & NFSMNT_INT) 533 (void)printf("%s%s", !f++ ? " (" : ", ", "intr"); 534 if (nfs_args->flags & NFSMNT_NOCONN) 535 (void)printf("%s%s", !f++ ? " (" : ", ", "noconn"); 536 if (nfs_args->flags & NFSMNT_RDIRPLUS) 537 (void)printf("%s%s", !f++ ? " (" : ", ", "rdirplus"); 538 if (verbose || nfs_args->wsize != NFS_WSIZE) 539 (void)printf("%s%s=%d", !f++ ? " (" : ", ", 540 "wsize", nfs_args->wsize); 541 if (verbose || nfs_args->rsize != NFS_RSIZE) 542 (void)printf("%s%s=%d", !f++ ? " (" : ", ", 543 "rsize", nfs_args->rsize); 544 if (verbose || nfs_args->readdirsize != NFS_READDIRSIZE) 545 (void)printf("%s%s=%d", !f++ ? " (" : ", ", 546 "rdirsize", nfs_args->readdirsize); 547 if (verbose || nfs_args->timeo != 10) /* XXX */ 548 (void)printf("%s%s=%d", !f++ ? " (" : ", ", 549 "timeo", nfs_args->timeo); 550 if (verbose || nfs_args->retrans != NFS_RETRANS) 551 (void)printf("%s%s=%d", !f++ ? " (" : ", ", 552 "retrans", nfs_args->retrans); 553 if (verbose || nfs_args->maxgrouplist != NFS_MAXGRPS) 554 (void)printf("%s%s=%d", !f++ ? " (" : ", ", 555 "maxgrouplist", nfs_args->maxgrouplist); 556 if (verbose || nfs_args->readahead != NFS_DEFRAHEAD) 557 (void)printf("%s%s=%d", !f++ ? " (" : ", ", 558 "readahead", nfs_args->readahead); 559 if (verbose) { 560 (void)printf("%s%s=%d", !f++ ? " (" : ", ", 561 "acregmin", nfs_args->acregmin); 562 (void)printf(", %s=%d", 563 "acregmax", nfs_args->acregmax); 564 (void)printf(", %s=%d", 565 "acdirmin", nfs_args->acdirmin); 566 (void)printf(", %s=%d", 567 "acdirmax", nfs_args->acdirmax); 568 } 569 } else if (strcmp(sf->f_fstypename, MOUNT_MFS) == 0) { 570 int headerlen; 571 long blocksize; 572 char *header; 573 574 header = getbsize(&headerlen, &blocksize); 575 (void)printf("%s%s=%lu %s", !f++ ? " (" : ", ", 576 "size", sf->mount_info.mfs_args.size / blocksize, header); 577 } else if (strcmp(sf->f_fstypename, MOUNT_MSDOS) == 0) { 578 struct msdosfs_args *msdosfs_args = &sf->mount_info.msdosfs_args; 579 580 if (verbose || msdosfs_args->uid || msdosfs_args->gid) 581 (void)printf("%s%s=%u, %s=%u", !f++ ? " (" : ", ", 582 "uid", msdosfs_args->uid, "gid", msdosfs_args->gid); 583 if (verbose || msdosfs_args->mask != 0755) 584 (void)printf("%s%s=0%o", !f++ ? " (" : ", ", 585 "mask", msdosfs_args->mask); 586 if (msdosfs_args->flags & MSDOSFSMNT_SHORTNAME) 587 (void)printf("%s%s", !f++ ? " (" : ", ", "short"); 588 if (msdosfs_args->flags & MSDOSFSMNT_LONGNAME) 589 (void)printf("%s%s", !f++ ? " (" : ", ", "long"); 590 if (msdosfs_args->flags & MSDOSFSMNT_NOWIN95) 591 (void)printf("%s%s", !f++ ? " (" : ", ", "nowin95"); 592 } else if (strcmp(sf->f_fstypename, MOUNT_CD9660) == 0) { 593 struct iso_args *iso_args = &sf->mount_info.iso_args; 594 595 if (iso_args->flags & ISOFSMNT_NORRIP) 596 (void)printf("%s%s", !f++ ? " (" : ", ", "norrip"); 597 if (iso_args->flags & ISOFSMNT_GENS) 598 (void)printf("%s%s", !f++ ? " (" : ", ", "gens"); 599 if (iso_args->flags & ISOFSMNT_EXTATT) 600 (void)printf("%s%s", !f++ ? " (" : ", ", "extatt"); 601 } else if (strcmp(sf->f_fstypename, MOUNT_TMPFS) == 0) { 602 struct tmpfs_args *tmpfs_args = &sf->mount_info.tmpfs_args; 603 604 if (verbose || tmpfs_args->ta_root_uid || tmpfs_args->ta_root_gid) 605 (void)printf("%s%s=%u, %s=%u", !f++ ? " (" : ", ", 606 "uid", tmpfs_args->ta_root_uid, "gid", tmpfs_args->ta_root_gid); 607 if (verbose || tmpfs_args->ta_root_mode != 040755) 608 (void)printf("%s%s=%04o", !f++ ? " (" : ", ", 609 "mode", tmpfs_args->ta_root_mode & 07777); 610 if (verbose || tmpfs_args->ta_size_max) 611 (void)printf("%s%s=%lu", !f++ ? " (" : ", ", 612 "size", (unsigned long)tmpfs_args->ta_size_max); 613 if (verbose || tmpfs_args->ta_nodes_max) 614 (void)printf("%s%s=%lu", !f++ ? " (" : ", ", 615 "inodes", (unsigned long)tmpfs_args->ta_nodes_max); 616 } 617 (void)printf(f ? ")\n" : "\n"); 618 } 619 620 struct statfs * 621 getmntpt(const char *name) 622 { 623 struct statfs *mntbuf; 624 int i, mntsize; 625 626 mntsize = getmntinfo(&mntbuf, MNT_NOWAIT); 627 for (i = 0; i < mntsize; i++) 628 if (strcmp(mntbuf[i].f_mntfromname, name) == 0 || 629 strcmp(mntbuf[i].f_mntonname, name) == 0) 630 return (&mntbuf[i]); 631 return (NULL); 632 } 633 634 static enum { IN_LIST, NOT_IN_LIST } which; 635 636 int 637 selected(const char *type) 638 { 639 char **av; 640 641 /* If no type specified, it's always selected. */ 642 if (typelist == NULL) 643 return (1); 644 for (av = typelist; *av != NULL; ++av) 645 if (!strncmp(type, *av, MFSNAMELEN)) 646 return (which == IN_LIST ? 1 : 0); 647 return (which == IN_LIST ? 0 : 1); 648 } 649 650 void 651 maketypelist(char *fslist) 652 { 653 int i; 654 char *nextcp, **av; 655 656 if ((fslist == NULL) || (fslist[0] == '\0')) 657 errx(1, "empty type list"); 658 659 /* 660 * XXX 661 * Note: the syntax is "noxxx,yyy" for no xxx's and 662 * no yyy's, not the more intuitive "noxxx,noyyy". 663 */ 664 if (fslist[0] == 'n' && fslist[1] == 'o') { 665 fslist += 2; 666 which = NOT_IN_LIST; 667 } else 668 which = IN_LIST; 669 670 /* Count the number of types. */ 671 for (i = 1, nextcp = fslist; (nextcp = strchr(nextcp, ',')); i++) 672 ++nextcp; 673 674 /* Build an array of that many types. */ 675 if ((av = typelist = reallocarray(NULL, i + 1, sizeof(char *))) == NULL) 676 err(1, NULL); 677 av[0] = fslist; 678 for (i = 1, nextcp = fslist; (nextcp = strchr(nextcp, ',')); i++) { 679 *nextcp = '\0'; 680 av[i] = ++nextcp; 681 } 682 /* Terminate the array. */ 683 av[i] = NULL; 684 } 685 686 char * 687 catopt(char *s0, const char *s1) 688 { 689 char *cp; 690 691 if (s0 && *s0) { 692 if (asprintf(&cp, "%s,%s", s0, s1) == -1) 693 err(1, NULL); 694 } else { 695 if ((cp = strdup(s1)) == NULL) 696 err(1, NULL); 697 } 698 699 free(s0); 700 return cp; 701 } 702 703 void 704 mangle(char *options, int *argcp, const char **argv, int argcmax) 705 { 706 char *p, *s; 707 int argc; 708 709 argcmax -= 2; 710 argc = *argcp; 711 for (s = options; argc <= argcmax && (p = strsep(&s, ",")) != NULL;) 712 if (*p != '\0') { 713 if (*p == '-') { 714 argv[argc++] = p; 715 p = strchr(p, '='); 716 if (p) { 717 *p = '\0'; 718 argv[argc++] = p + 1; 719 } 720 } else { 721 argv[argc++] = "-o"; 722 argv[argc++] = p; 723 } 724 } 725 726 *argcp = argc; 727 } 728 729 __dead void 730 usage(void) 731 { 732 (void)fprintf(stderr, 733 "usage: mount [-AadfNruvw] [-t type]\n" 734 " mount [-dfrsuvw] special | node\n" 735 " mount [-dfruvw] [-o options] [-t type] special node\n"); 736 exit(1); 737 } 738 739 int 740 disklabelcheck(struct fstab *fs) 741 { 742 char *labelfs; 743 744 if (strcmp(fs->fs_vfstype, "nfs") != 0 || 745 strpbrk(fs->fs_spec, ":@") == NULL) { 746 labelfs = readlabelfs(fs->fs_spec, 0); 747 if (labelfs == NULL || 748 strcmp(labelfs, fs->fs_vfstype) == 0) 749 return (0); 750 if (strcmp(fs->fs_vfstype, "ufs") == 0 && 751 strcmp(labelfs, "ffs") == 0) { 752 warnx("%s: fstab uses outdated type 'ufs' -- fix please", 753 fs->fs_spec); 754 return (0); 755 } 756 if (strcmp(fs->fs_vfstype, "mfs") == 0 && 757 strcmp(labelfs, "ffs") == 0) 758 return (0); 759 warnx("%s: fstab type %s != disklabel type %s", 760 fs->fs_spec, fs->fs_vfstype, labelfs); 761 return (1); 762 } 763 return (0); 764 } 765