1/* $OpenBSD: mount.c,v 1.78 2024/05/09 08:35:40 florian 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 56int debug, verbose, skip; 57char **typelist = NULL; 58enum { NONET_FILTER, NET_FILTER } filter = NONET_FILTER; 59 60int selected(const char *); 61char *catopt(char *, const char *); 62char *flags2opts(u_int32_t); 63struct statfs 64 *getmntpt(const char *); 65int hasopt(const char *, const char *); 66void maketypelist(char *); 67void mangle(char *, int *, const char **, int); 68int mountfs(const char *, const char *, const char *, const char *, 69 const char *, int); 70void prmount(struct statfs *); 71int disklabelcheck(struct fstab *); 72__dead void usage(void); 73 74/* Map from mount options to printable formats. */ 75static 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 101int 102main(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 default: 162 usage(); 163 } 164 argc -= optind; 165 argv += optind; 166 167 if (typelist == NULL && argc == 2) { 168 /* 169 * If -t flag has not been specified, and spec contains either 170 * a ':' or a '@' then assume that an NFS filesystem is being 171 * specified ala Sun. If not, check the disklabel for a 172 * known filesystem type. 173 */ 174 if (strpbrk(argv[0], ":@") != NULL) 175 vfstype = "nfs"; 176 else { 177 char *labelfs = readlabelfs(argv[0], 0); 178 if (labelfs != NULL) 179 vfstype = labelfs; 180 } 181 } 182 183 if (pledge("stdio rpath disklabel proc exec", NULL) == -1) 184 err(1, "pledge"); 185 186#define BADTYPE(type) \ 187 (strcmp(type, FSTAB_RO) && \ 188 strcmp(type, FSTAB_RW) && strcmp(type, FSTAB_RQ)) 189 190 rval = 0; 191 new = 0; 192 switch (argc) { 193 case 0: 194 if (all) 195 while ((fs = getfsent()) != NULL) { 196 if (BADTYPE(fs->fs_type)) 197 continue; 198 switch (filter) { 199 case NET_FILTER: 200 if (!hasopt(fs->fs_mntops, "net")) 201 continue; 202 break; 203 case NONET_FILTER: 204 if (hasopt(fs->fs_mntops, "net")) 205 continue; 206 break; 207 } 208 if (!selected(fs->fs_vfstype)) 209 continue; 210 if (hasopt(fs->fs_mntops, "noauto")) 211 continue; 212 if (disklabelcheck(fs)) 213 continue; 214 if (mountfs(fs->fs_vfstype, fs->fs_spec, 215 fs->fs_file, options, 216 fs->fs_mntops, !forceall)) 217 rval = 1; 218 else 219 ++new; 220 } 221 else { 222 if ((mntsize = getmntinfo(&mntbuf, MNT_NOWAIT)) == 0) 223 err(1, "getmntinfo"); 224 for (i = 0; i < mntsize; i++) { 225 if (!selected(mntbuf[i].f_fstypename)) 226 continue; 227 prmount(&mntbuf[i]); 228 } 229 return (rval); 230 } 231 break; 232 case 1: 233 if (typelist != NULL) 234 usage(); 235 236 if (realpath(*argv, mntpath) == NULL) 237 strlcpy(mntpath, *argv, sizeof(mntpath)); 238 if (hasopt(options, "update")) { 239 if ((mntbuf = getmntpt(mntpath)) == NULL) 240 errx(1, 241 "unknown special file or file system %s.", 242 mntpath); 243 if ((mntbuf->f_flags & MNT_ROOTFS) && 244 !strcmp(mntbuf->f_mntfromname, "root_device")) { 245 /* Lookup fstab for name of root device. */ 246 fs = getfsfile(mntbuf->f_mntonname); 247 if (fs == NULL) 248 errx(1, 249 "can't find fstab entry for %s.", 250 mntpath); 251 } else { 252 if ((fs = malloc(sizeof(*fs))) == NULL) 253 err(1, NULL); 254 fs->fs_vfstype = mntbuf->f_fstypename; 255 fs->fs_spec = mntbuf->f_mntfromname; 256 } 257 /* 258 * It's an update, ignore the fstab file options. 259 * Get the current options, so we can change only 260 * the options which given via a command line. 261 */ 262 fs->fs_mntops = flags2opts(mntbuf->f_flags); 263 mntonname = mntbuf->f_mntonname; 264 } else { 265 if ((fs = getfsfile(mntpath)) == NULL && 266 (fs = getfsspec(mntpath)) == NULL) 267 errx(1, "can't find fstab entry for %s.", 268 mntpath); 269 if (BADTYPE(fs->fs_type)) 270 errx(1, "%s has unknown file system type.", 271 mntpath); 272 mntonname = fs->fs_file; 273 } 274 rval = mountfs(fs->fs_vfstype, fs->fs_spec, 275 mntonname, options, fs->fs_mntops, skip); 276 break; 277 case 2: 278 rval = mountfs(vfstype, argv[0], argv[1], options, NULL, skip); 279 break; 280 default: 281 usage(); 282 } 283 284 /* 285 * If the mount was successful and done by root, tell mountd the 286 * good news. Pid checks are probably unnecessary, but don't hurt. 287 * XXX This should be done from kernel. 288 */ 289 if ((rval == 0 || new) && getuid() == 0 && 290 (mountdfp = fopen(_PATH_MOUNTDPID, "r")) != NULL) { 291 if (fscanf(mountdfp, "%d", &pid) == 1 && 292 pid > 0 && kill(pid, SIGHUP) == -1 && errno != ESRCH) 293 err(1, "signal mountd"); 294 (void)fclose(mountdfp); 295 } 296 297 return (rval); 298} 299 300int 301hasopt(const char *mntopts, const char *option) 302{ 303 int found; 304 char *opt, *optbuf; 305 306 if (mntopts == NULL) 307 return (0); 308 if ((optbuf = strdup(mntopts)) == NULL) 309 err(1, NULL); 310 found = 0; 311 for (opt = optbuf; !found && opt != NULL; strsep(&opt, ",")) 312 found = !strncmp(opt, option, strlen(option)); 313 free(optbuf); 314 return (found); 315} 316 317/* 318 * Convert mount(2) flags to list of mount(8) options. 319 */ 320char* 321flags2opts(u_int32_t flags) 322{ 323 char *optlist; 324 struct opt *p; 325 326 optlist = NULL; 327 for (p = optnames; p->o_opt; p++) { 328 if (flags & p->o_opt && *p->o_optname) 329 optlist = catopt(optlist, p->o_optname); 330 } 331 332 return(optlist); 333} 334 335int 336mountfs(const char *vfstype, const char *spec, const char *name, 337 const char *options, const char *mntopts, int skipmounted) 338{ 339 char *cp; 340 341 /* List of directories containing mount_xxx subcommands. */ 342 static const char *edirs[] = { 343 _PATH_SBIN, 344 _PATH_USRSBIN, 345 NULL 346 }; 347 const char **argv, **edir; 348 struct statfs sf; 349 pid_t pid; 350 int argc, i, status, argvsize; 351 char *optbuf, execname[PATH_MAX], mntpath[PATH_MAX]; 352 353 if (realpath(name, mntpath) == NULL) { 354 warn("realpath %s", name); 355 return (1); 356 } 357 358 name = mntpath; 359 360 if (mntopts == NULL) 361 mntopts = ""; 362 363 if (options == NULL) { 364 if (*mntopts == '\0') 365 options = "rw"; 366 else { 367 options = mntopts; 368 mntopts = ""; 369 } 370 } 371 372 /* options follows after mntopts, so they get priority over mntopts */ 373 if ((cp = strdup(mntopts)) == NULL) 374 err(1, NULL); 375 optbuf = catopt(cp, options); 376 377 if (strcmp(name, "/") == 0) { 378 if (!hasopt(optbuf, "update")) 379 optbuf = catopt(optbuf, "update"); 380 } else if (skipmounted) { 381 if (statfs(name, &sf) == -1) { 382 warn("statfs %s", name); 383 return (1); 384 } 385 /* XXX can't check f_mntfromname, thanks to mfs, etc. */ 386 if (strncmp(name, sf.f_mntonname, MNAMELEN) == 0 && 387 strncmp(vfstype, sf.f_fstypename, MFSNAMELEN) == 0) { 388 if (verbose) { 389 printf("%s", sf.f_mntfromname); 390 if (strncmp(sf.f_mntfromname, 391 sf.f_mntfromspec, MNAMELEN) != 0) 392 printf(" (%s)", sf.f_mntfromspec); 393 printf(" on %s type %.*s: %s\n", 394 sf.f_mntonname, 395 MFSNAMELEN, sf.f_fstypename, 396 "already mounted"); 397 } 398 return (0); 399 } 400 } 401 402 argvsize = 64; 403 if((argv = reallocarray(NULL, argvsize, sizeof(char *))) == NULL) 404 err(1, NULL); 405 argc = 0; 406 argv[argc++] = NULL; /* this should be a full path name */ 407 mangle(optbuf, &argc, argv, argvsize - 4); 408 argv[argc++] = spec; 409 argv[argc++] = name; 410 argv[argc] = NULL; 411 412 if (debug) { 413 (void)printf("exec: mount_%s", vfstype); 414 for (i = 1; i < argc; i++) 415 (void)printf(" %s", argv[i]); 416 (void)printf("\n"); 417 free(optbuf); 418 free(argv); 419 return (0); 420 } 421 422 switch ((pid = fork())) { 423 case -1: /* Error. */ 424 warn("fork"); 425 free(optbuf); 426 free(argv); 427 return (1); 428 case 0: /* Child. */ 429 /* Go find an executable. */ 430 edir = edirs; 431 do { 432 (void)snprintf(execname, 433 sizeof(execname), "%s/mount_%s", *edir, vfstype); 434 argv[0] = execname; 435 execv(execname, (char * const *)argv); 436 if (errno != ENOENT) 437 warn("exec %s for %s", execname, name); 438 } while (*++edir != NULL); 439 440 if (errno == ENOENT) 441 warn("no mount helper program found for %s", vfstype); 442 _exit(1); 443 default: /* Parent. */ 444 free(optbuf); 445 free(argv); 446 447 if (waitpid(pid, &status, 0) == -1) { 448 warn("waitpid"); 449 return (1); 450 } 451 452 if (WIFEXITED(status)) { 453 if (WEXITSTATUS(status) != 0) 454 return (WEXITSTATUS(status)); 455 } else if (WIFSIGNALED(status)) { 456 warnx("%s: %s", name, strsignal(WTERMSIG(status))); 457 return (1); 458 } 459 460 if (verbose) { 461 if (statfs(name, &sf) == -1) { 462 warn("statfs %s", name); 463 return (1); 464 } 465 prmount(&sf); 466 } 467 break; 468 } 469 470 return (0); 471} 472 473void 474prmount(struct statfs *sf) 475{ 476 int flags; 477 struct opt *o; 478 int f = 0; 479 480 printf("%s", sf->f_mntfromname); 481 if (verbose && 482 strncmp(sf->f_mntfromname, sf->f_mntfromspec, MNAMELEN) != 0) 483 printf(" (%s)", sf->f_mntfromspec); 484 printf(" on %s type %.*s", sf->f_mntonname, 485 MFSNAMELEN, sf->f_fstypename); 486 487 flags = sf->f_flags & MNT_VISFLAGMASK; 488 if (verbose && !(flags & MNT_RDONLY)) 489 (void)printf("%s%s", !f++ ? " (" : ", ", "rw"); 490 for (o = optnames; flags && o->o_opt; o++) 491 if (flags & o->o_opt) { 492 if (!o->o_silent) 493 (void)printf("%s%s", !f++ ? " (" : ", ", 494 o->o_name); 495 flags &= ~o->o_opt; 496 } 497 if (flags) 498 (void)printf("%sunknown flag%s %#x", !f++ ? " (" : ", ", 499 flags & (flags - 1) ? "s" : "", flags); 500 501 502 if (verbose) { 503 char buf[26]; 504 time_t t = sf->f_ctime; 505 506 if (ctime_r(&t, buf)) 507 printf(", ctime=%.24s", buf); 508 else 509 printf(", ctime=%lld", t); 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#ifndef SMALL 570 } else if (strcmp(sf->f_fstypename, MOUNT_MFS) == 0) { 571 int headerlen; 572 long blocksize; 573 char *header; 574 575 header = getbsize(&headerlen, &blocksize); 576 (void)printf("%s%s=%lu %s", !f++ ? " (" : ", ", 577 "size", sf->mount_info.mfs_args.size / blocksize, header); 578#endif /* SMALL */ 579 } else if (strcmp(sf->f_fstypename, MOUNT_MSDOS) == 0) { 580 struct msdosfs_args *msdosfs_args = &sf->mount_info.msdosfs_args; 581 582 if (verbose || msdosfs_args->uid || msdosfs_args->gid) 583 (void)printf("%s%s=%u, %s=%u", !f++ ? " (" : ", ", 584 "uid", msdosfs_args->uid, "gid", msdosfs_args->gid); 585 if (verbose || msdosfs_args->mask != 0755) 586 (void)printf("%s%s=0%o", !f++ ? " (" : ", ", 587 "mask", msdosfs_args->mask); 588 if (msdosfs_args->flags & MSDOSFSMNT_SHORTNAME) 589 (void)printf("%s%s", !f++ ? " (" : ", ", "short"); 590 if (msdosfs_args->flags & MSDOSFSMNT_LONGNAME) 591 (void)printf("%s%s", !f++ ? " (" : ", ", "long"); 592 if (msdosfs_args->flags & MSDOSFSMNT_NOWIN95) 593 (void)printf("%s%s", !f++ ? " (" : ", ", "nowin95"); 594 } else if (strcmp(sf->f_fstypename, MOUNT_CD9660) == 0) { 595 struct iso_args *iso_args = &sf->mount_info.iso_args; 596 597 if (iso_args->flags & ISOFSMNT_NORRIP) 598 (void)printf("%s%s", !f++ ? " (" : ", ", "norrip"); 599 if (iso_args->flags & ISOFSMNT_GENS) 600 (void)printf("%s%s", !f++ ? " (" : ", ", "gens"); 601 if (iso_args->flags & ISOFSMNT_EXTATT) 602 (void)printf("%s%s", !f++ ? " (" : ", ", "extatt"); 603#ifndef SMALL 604 } else if (strcmp(sf->f_fstypename, MOUNT_TMPFS) == 0) { 605 struct tmpfs_args *tmpfs_args = &sf->mount_info.tmpfs_args; 606 607 if (verbose || tmpfs_args->ta_root_uid || tmpfs_args->ta_root_gid) 608 (void)printf("%s%s=%u, %s=%u", !f++ ? " (" : ", ", 609 "uid", tmpfs_args->ta_root_uid, "gid", tmpfs_args->ta_root_gid); 610 if (verbose || tmpfs_args->ta_root_mode != 040755) 611 (void)printf("%s%s=%04o", !f++ ? " (" : ", ", 612 "mode", tmpfs_args->ta_root_mode & 07777); 613 if (verbose || tmpfs_args->ta_size_max) 614 (void)printf("%s%s=%lu", !f++ ? " (" : ", ", 615 "size", (unsigned long)tmpfs_args->ta_size_max); 616 if (verbose || tmpfs_args->ta_nodes_max) 617 (void)printf("%s%s=%lu", !f++ ? " (" : ", ", 618 "inodes", (unsigned long)tmpfs_args->ta_nodes_max); 619#endif /* SMALL */ 620 } 621 (void)printf(f ? ")\n" : "\n"); 622} 623 624struct statfs * 625getmntpt(const char *name) 626{ 627 struct statfs *mntbuf; 628 int i, mntsize; 629 630 mntsize = getmntinfo(&mntbuf, MNT_NOWAIT); 631 for (i = 0; i < mntsize; i++) 632 if (strcmp(mntbuf[i].f_mntfromname, name) == 0 || 633 strcmp(mntbuf[i].f_mntonname, name) == 0) 634 return (&mntbuf[i]); 635 return (NULL); 636} 637 638static enum { IN_LIST, NOT_IN_LIST } which; 639 640int 641selected(const char *type) 642{ 643 char **av; 644 645 /* If no type specified, it's always selected. */ 646 if (typelist == NULL) 647 return (1); 648 for (av = typelist; *av != NULL; ++av) 649 if (!strncmp(type, *av, MFSNAMELEN)) 650 return (which == IN_LIST ? 1 : 0); 651 return (which == IN_LIST ? 0 : 1); 652} 653 654void 655maketypelist(char *fslist) 656{ 657 int i; 658 char *nextcp, **av; 659 660 if ((fslist == NULL) || (fslist[0] == '\0')) 661 errx(1, "empty type list"); 662 663 /* 664 * XXX 665 * Note: the syntax is "noxxx,yyy" for no xxx's and 666 * no yyy's, not the more intuitive "noxxx,noyyy". 667 */ 668 if (fslist[0] == 'n' && fslist[1] == 'o') { 669 fslist += 2; 670 which = NOT_IN_LIST; 671 } else 672 which = IN_LIST; 673 674 /* Count the number of types. */ 675 for (i = 1, nextcp = fslist; (nextcp = strchr(nextcp, ',')); i++) 676 ++nextcp; 677 678 /* Build an array of that many types. */ 679 if ((av = typelist = reallocarray(NULL, i + 1, sizeof(char *))) == NULL) 680 err(1, NULL); 681 av[0] = fslist; 682 for (i = 1, nextcp = fslist; (nextcp = strchr(nextcp, ',')); i++) { 683 *nextcp = '\0'; 684 av[i] = ++nextcp; 685 } 686 /* Terminate the array. */ 687 av[i] = NULL; 688} 689 690char * 691catopt(char *s0, const char *s1) 692{ 693 char *cp; 694 695 if (s0 && *s0) { 696 if (asprintf(&cp, "%s,%s", s0, s1) == -1) 697 err(1, NULL); 698 } else { 699 if ((cp = strdup(s1)) == NULL) 700 err(1, NULL); 701 } 702 703 free(s0); 704 return cp; 705} 706 707void 708mangle(char *options, int *argcp, const char **argv, int argcmax) 709{ 710 char *p, *s; 711 int argc; 712 713 argcmax -= 2; 714 argc = *argcp; 715 for (s = options; argc <= argcmax && (p = strsep(&s, ",")) != NULL;) 716 if (*p != '\0') { 717 if (*p == '-') { 718 argv[argc++] = p; 719 p = strchr(p, '='); 720 if (p) { 721 *p = '\0'; 722 argv[argc++] = p + 1; 723 } 724 } else { 725 argv[argc++] = "-o"; 726 argv[argc++] = p; 727 } 728 } 729 730 *argcp = argc; 731} 732 733__dead void 734usage(void) 735{ 736 (void)fprintf(stderr, 737 "usage: mount [-AadfNruvw] [-t type]\n" 738 " mount [-dfrsuvw] special | node\n" 739 " mount [-dfruvw] [-o options] [-t type] special node\n"); 740 exit(1); 741} 742 743int 744disklabelcheck(struct fstab *fs) 745{ 746 char *labelfs; 747 748 if (strcmp(fs->fs_vfstype, "nfs") != 0 || 749 strpbrk(fs->fs_spec, ":@") == NULL) { 750 labelfs = readlabelfs(fs->fs_spec, 0); 751 if (labelfs == NULL || 752 strcmp(labelfs, fs->fs_vfstype) == 0) 753 return (0); 754 if (strcmp(fs->fs_vfstype, "ufs") == 0 && 755 strcmp(labelfs, "ffs") == 0) { 756 warnx("%s: fstab uses outdated type 'ufs' -- fix please", 757 fs->fs_spec); 758 return (0); 759 } 760 if (strcmp(fs->fs_vfstype, "mfs") == 0 && 761 strcmp(labelfs, "ffs") == 0) 762 return (0); 763 warnx("%s: fstab type %s != disklabel type %s", 764 fs->fs_spec, fs->fs_vfstype, labelfs); 765 return (1); 766 } 767 return (0); 768} 769