1 /*- 2 * Copyright (c) 1980, 1989, 1993, 1994 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, 1989, 1993, 1994\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[] = "@(#)mount.c 8.25 (Berkeley) 5/8/95"; 43 #endif 44 static const char rcsid[] = 45 "$FreeBSD$"; 46 #endif /* not lint */ 47 48 #include <sys/param.h> 49 #include <sys/mount.h> 50 #include <sys/stat.h> 51 #include <sys/wait.h> 52 53 #include <err.h> 54 #include <errno.h> 55 #include <fstab.h> 56 #include <pwd.h> 57 #include <signal.h> 58 #include <stdio.h> 59 #include <stdlib.h> 60 #include <string.h> 61 #include <unistd.h> 62 63 #include "extern.h" 64 #include "mntopts.h" 65 #include "pathnames.h" 66 67 /* `meta' options */ 68 #define MOUNT_META_OPTION_FSTAB "fstab" 69 #define MOUNT_META_OPTION_CURRENT "current" 70 71 int debug, fstab_style, verbose; 72 73 char *catopt(char *, const char *); 74 struct statfs *getmntpt(const char *); 75 int hasopt(const char *, const char *); 76 int ismounted(struct fstab *, struct statfs *, int); 77 int isremountable(const char *); 78 void mangle(char *, int *, const char **); 79 char *update_options(char *, char *, int); 80 int mountfs(const char *, const char *, const char *, 81 int, const char *, const char *); 82 void remopt(char *, const char *); 83 void prmount(struct statfs *); 84 void putfsent(const struct statfs *); 85 void usage(void); 86 char *flags2opts(int); 87 88 /* Map from mount options to printable formats. */ 89 static struct opt { 90 int o_opt; 91 const char *o_name; 92 } optnames[] = { 93 { MNT_ASYNC, "asynchronous" }, 94 { MNT_EXPORTED, "NFS exported" }, 95 { MNT_LOCAL, "local" }, 96 { MNT_NOATIME, "noatime" }, 97 { MNT_NODEV, "nodev" }, 98 { MNT_NOEXEC, "noexec" }, 99 { MNT_NOSUID, "nosuid" }, 100 { MNT_NOSYMFOLLOW, "nosymfollow" }, 101 { MNT_QUOTA, "with quotas" }, 102 { MNT_RDONLY, "read-only" }, 103 { MNT_SYNCHRONOUS, "synchronous" }, 104 { MNT_UNION, "union" }, 105 { MNT_NOCLUSTERR, "noclusterr" }, 106 { MNT_NOCLUSTERW, "noclusterw" }, 107 { MNT_SUIDDIR, "suiddir" }, 108 { MNT_SOFTDEP, "soft-updates" }, 109 { 0, NULL } 110 }; 111 112 /* 113 * List of VFS types that can be remounted without becoming mounted on top 114 * of each other. 115 * XXX Is this list correct? 116 */ 117 static const char * 118 remountable_fs_names[] = { 119 "ufs", "ffs", "ext2fs", 120 0 121 }; 122 123 int 124 main(argc, argv) 125 int argc; 126 char * const argv[]; 127 { 128 const char *mntfromname, **vfslist, *vfstype; 129 struct fstab *fs; 130 struct statfs *mntbuf; 131 FILE *mountdfp; 132 pid_t pid; 133 int all, ch, i, init_flags, mntsize, rval, have_fstab; 134 char *options; 135 136 all = init_flags = 0; 137 options = NULL; 138 vfslist = NULL; 139 vfstype = "ufs"; 140 while ((ch = getopt(argc, argv, "adfo:prwt:uv")) != -1) 141 switch (ch) { 142 case 'a': 143 all = 1; 144 break; 145 case 'd': 146 debug = 1; 147 break; 148 case 'f': 149 init_flags |= MNT_FORCE; 150 break; 151 case 'o': 152 if (*optarg) 153 options = catopt(options, optarg); 154 break; 155 case 'p': 156 fstab_style = 1; 157 verbose = 1; 158 break; 159 case 'r': 160 options = catopt(options, "ro"); 161 break; 162 case 't': 163 if (vfslist != NULL) 164 errx(1, "only one -t option may be specified"); 165 vfslist = makevfslist(optarg); 166 vfstype = optarg; 167 break; 168 case 'u': 169 init_flags |= MNT_UPDATE; 170 break; 171 case 'v': 172 verbose = 1; 173 break; 174 case 'w': 175 options = catopt(options, "noro"); 176 break; 177 case '?': 178 default: 179 usage(); 180 /* NOTREACHED */ 181 } 182 argc -= optind; 183 argv += optind; 184 185 #define BADTYPE(type) \ 186 (strcmp(type, FSTAB_RO) && \ 187 strcmp(type, FSTAB_RW) && strcmp(type, FSTAB_RQ)) 188 189 rval = 0; 190 switch (argc) { 191 case 0: 192 if ((mntsize = getmntinfo(&mntbuf, MNT_NOWAIT)) == 0) 193 err(1, "getmntinfo"); 194 if (all) { 195 while ((fs = getfsent()) != NULL) { 196 if (BADTYPE(fs->fs_type)) 197 continue; 198 if (checkvfsname(fs->fs_vfstype, vfslist)) 199 continue; 200 if (hasopt(fs->fs_mntops, "noauto")) 201 continue; 202 if (!(init_flags & MNT_UPDATE) && 203 ismounted(fs, mntbuf, mntsize)) 204 continue; 205 if (mountfs(fs->fs_vfstype, fs->fs_spec, 206 fs->fs_file, init_flags, options, 207 fs->fs_mntops)) 208 rval = 1; 209 } 210 } else if (fstab_style) { 211 for (i = 0; i < mntsize; i++) { 212 if (checkvfsname(mntbuf[i].f_fstypename, vfslist)) 213 continue; 214 putfsent(&mntbuf[i]); 215 } 216 } else { 217 for (i = 0; i < mntsize; i++) { 218 if (checkvfsname(mntbuf[i].f_fstypename, 219 vfslist)) 220 continue; 221 prmount(&mntbuf[i]); 222 } 223 } 224 exit(rval); 225 case 1: 226 if (vfslist != NULL) 227 usage(); 228 229 if (init_flags & MNT_UPDATE) { 230 mntfromname = NULL; 231 have_fstab = 0; 232 if ((mntbuf = getmntpt(*argv)) == NULL) 233 errx(1, "not currently mounted %s", *argv); 234 /* 235 * Only get the mntflags from fstab if both mntpoint 236 * and mntspec are identical. Also handle the special 237 * case where just '/' is mounted and 'spec' is not 238 * identical with the one from fstab ('/dev' is missing 239 * in the spec-string at boot-time). 240 */ 241 if ((fs = getfsfile(mntbuf->f_mntonname)) != NULL) { 242 if (strcmp(fs->fs_spec, 243 mntbuf->f_mntfromname) == 0 && 244 strcmp(fs->fs_file, 245 mntbuf->f_mntonname) == 0) { 246 have_fstab = 1; 247 mntfromname = mntbuf->f_mntfromname; 248 } else if (argv[0][0] == '/' && 249 argv[0][1] == '\0') { 250 fs = getfsfile("/"); 251 have_fstab = 1; 252 mntfromname = fs->fs_spec; 253 } 254 } 255 if (have_fstab) { 256 options = update_options(options, fs->fs_mntops, 257 mntbuf->f_flags); 258 } else { 259 mntfromname = mntbuf->f_mntfromname; 260 options = update_options(options, NULL, 261 mntbuf->f_flags); 262 } 263 rval = mountfs(mntbuf->f_fstypename, mntfromname, 264 mntbuf->f_mntonname, init_flags, options, 0); 265 break; 266 } 267 rmslashes(*argv, *argv); 268 if ((fs = getfsfile(*argv)) == NULL && 269 (fs = getfsspec(*argv)) == NULL) 270 errx(1, "%s: unknown special file or file system", 271 *argv); 272 if (BADTYPE(fs->fs_type)) 273 errx(1, "%s has unknown file system type", 274 *argv); 275 rval = mountfs(fs->fs_vfstype, fs->fs_spec, fs->fs_file, 276 init_flags, options, fs->fs_mntops); 277 break; 278 case 2: 279 /* 280 * If -t flag has not been specified, the path cannot be 281 * found, spec contains either a ':' or a '@', and the 282 * spec is not a file with those characters, then assume 283 * that an NFS filesystem is being specified ala Sun. 284 */ 285 if (vfslist == NULL && strpbrk(argv[0], ":@") != NULL && 286 access(argv[0], 0) == -1) 287 vfstype = "nfs"; 288 rval = mountfs(vfstype, 289 argv[0], argv[1], init_flags, options, NULL); 290 break; 291 default: 292 usage(); 293 /* NOTREACHED */ 294 } 295 296 /* 297 * If the mount was successfully, and done by root, tell mountd the 298 * good news. Pid checks are probably unnecessary, but don't hurt. 299 */ 300 if (rval == 0 && getuid() == 0 && 301 (mountdfp = fopen(_PATH_MOUNTDPID, "r")) != NULL) { 302 if (fscanf(mountdfp, "%d", &pid) == 1 && 303 pid > 0 && kill(pid, SIGHUP) == -1 && errno != ESRCH) 304 err(1, "signal mountd"); 305 (void)fclose(mountdfp); 306 } 307 308 exit(rval); 309 } 310 311 int 312 ismounted(fs, mntbuf, mntsize) 313 struct fstab *fs; 314 struct statfs *mntbuf; 315 int mntsize; 316 { 317 int i; 318 319 if (fs->fs_file[0] == '/' && fs->fs_file[1] == '\0') 320 /* the root file system can always be remounted */ 321 return (0); 322 323 for (i = mntsize - 1; i >= 0; --i) 324 if (strcmp(fs->fs_file, mntbuf[i].f_mntonname) == 0 && 325 (!isremountable(fs->fs_vfstype) || 326 strcmp(fs->fs_spec, mntbuf[i].f_mntfromname) == 0)) 327 return (1); 328 return (0); 329 } 330 331 int 332 isremountable(vfsname) 333 const char *vfsname; 334 { 335 const char **cp; 336 337 for (cp = remountable_fs_names; *cp; cp++) 338 if (strcmp(*cp, vfsname) == 0) 339 return (1); 340 return (0); 341 } 342 343 int 344 hasopt(mntopts, option) 345 const char *mntopts, *option; 346 { 347 int negative, found; 348 char *opt, *optbuf; 349 350 if (option[0] == 'n' && option[1] == 'o') { 351 negative = 1; 352 option += 2; 353 } else 354 negative = 0; 355 optbuf = strdup(mntopts); 356 found = 0; 357 for (opt = optbuf; (opt = strtok(opt, ",")) != NULL; opt = NULL) { 358 if (opt[0] == 'n' && opt[1] == 'o') { 359 if (!strcasecmp(opt + 2, option)) 360 found = negative; 361 } else if (!strcasecmp(opt, option)) 362 found = !negative; 363 } 364 free(optbuf); 365 return (found); 366 } 367 368 int 369 mountfs(vfstype, spec, name, flags, options, mntopts) 370 const char *vfstype, *spec, *name, *options, *mntopts; 371 int flags; 372 { 373 /* List of directories containing mount_xxx subcommands. */ 374 static const char *edirs[] = { 375 _PATH_SBIN, 376 _PATH_USRSBIN, 377 NULL 378 }; 379 const char *argv[100], **edir; 380 struct statfs sf; 381 pid_t pid; 382 int argc, i, status; 383 char *optbuf, execname[MAXPATHLEN + 1], mntpath[MAXPATHLEN]; 384 385 #if __GNUC__ 386 (void)&optbuf; 387 (void)&name; 388 #endif 389 390 /* resolve the mountpoint with realpath(3) */ 391 (void)checkpath(name, mntpath); 392 name = mntpath; 393 394 if (mntopts == NULL) 395 mntopts = ""; 396 if (options == NULL) { 397 if (*mntopts == '\0') { 398 options = "rw"; 399 } else { 400 options = mntopts; 401 mntopts = ""; 402 } 403 } 404 optbuf = catopt(strdup(mntopts), options); 405 406 if (strcmp(name, "/") == 0) 407 flags |= MNT_UPDATE; 408 if (flags & MNT_FORCE) 409 optbuf = catopt(optbuf, "force"); 410 if (flags & MNT_RDONLY) 411 optbuf = catopt(optbuf, "ro"); 412 /* 413 * XXX 414 * The mount_mfs (newfs) command uses -o to select the 415 * optimization mode. We don't pass the default "-o rw" 416 * for that reason. 417 */ 418 if (flags & MNT_UPDATE) 419 optbuf = catopt(optbuf, "update"); 420 421 /* Compatibility glue. */ 422 if (strcmp(vfstype, "msdos") == 0) 423 vfstype = "msdosfs"; 424 425 argc = 0; 426 argv[argc++] = vfstype; 427 mangle(optbuf, &argc, argv); 428 argv[argc++] = spec; 429 argv[argc++] = name; 430 argv[argc] = NULL; 431 432 if (debug) { 433 (void)printf("exec: mount_%s", vfstype); 434 for (i = 1; i < argc; i++) 435 (void)printf(" %s", argv[i]); 436 (void)printf("\n"); 437 return (0); 438 } 439 440 switch (pid = fork()) { 441 case -1: /* Error. */ 442 warn("fork"); 443 free(optbuf); 444 return (1); 445 case 0: /* Child. */ 446 if (strcmp(vfstype, "ufs") == 0) 447 exit(mount_ufs(argc, (char * const *) argv)); 448 449 /* Go find an executable. */ 450 for (edir = edirs; *edir; edir++) { 451 (void)snprintf(execname, 452 sizeof(execname), "%s/mount_%s", *edir, vfstype); 453 execv(execname, (char * const *)argv); 454 } 455 if (errno == ENOENT) { 456 int len = 0; 457 char *cp; 458 for (edir = edirs; *edir; edir++) 459 len += strlen(*edir) + 2; /* ", " */ 460 if ((cp = malloc(len)) == NULL) 461 errx(1, "malloc failed"); 462 cp[0] = '\0'; 463 for (edir = edirs; *edir; edir++) { 464 strcat(cp, *edir); 465 if (edir[1] != NULL) 466 strcat(cp, ", "); 467 } 468 warn("exec mount_%s not found in %s", vfstype, cp); 469 } 470 exit(1); 471 /* NOTREACHED */ 472 default: /* Parent. */ 473 free(optbuf); 474 475 if (waitpid(pid, &status, 0) < 0) { 476 warn("waitpid"); 477 return (1); 478 } 479 480 if (WIFEXITED(status)) { 481 if (WEXITSTATUS(status) != 0) 482 return (WEXITSTATUS(status)); 483 } else if (WIFSIGNALED(status)) { 484 warnx("%s: %s", name, sys_siglist[WTERMSIG(status)]); 485 return (1); 486 } 487 488 if (verbose) { 489 if (statfs(name, &sf) < 0) { 490 warn("statfs %s", name); 491 return (1); 492 } 493 if (fstab_style) 494 putfsent(&sf); 495 else 496 prmount(&sf); 497 } 498 break; 499 } 500 501 return (0); 502 } 503 504 void 505 prmount(sfp) 506 struct statfs *sfp; 507 { 508 int flags; 509 struct opt *o; 510 struct passwd *pw; 511 512 (void)printf("%s on %s (%s", sfp->f_mntfromname, sfp->f_mntonname, 513 sfp->f_fstypename); 514 515 flags = sfp->f_flags & MNT_VISFLAGMASK; 516 for (o = optnames; flags && o->o_opt; o++) 517 if (flags & o->o_opt) { 518 (void)printf(", %s", o->o_name); 519 flags &= ~o->o_opt; 520 } 521 if (sfp->f_owner) { 522 (void)printf(", mounted by "); 523 if ((pw = getpwuid(sfp->f_owner)) != NULL) 524 (void)printf("%s", pw->pw_name); 525 else 526 (void)printf("%d", sfp->f_owner); 527 } 528 if (verbose) { 529 if (sfp->f_syncwrites != 0 || sfp->f_asyncwrites != 0) 530 (void)printf(", writes: sync %ld async %ld", 531 sfp->f_syncwrites, sfp->f_asyncwrites); 532 if (sfp->f_syncreads != 0 || sfp->f_asyncreads != 0) 533 (void)printf(", reads: sync %ld async %ld", 534 sfp->f_syncreads, sfp->f_asyncreads); 535 } 536 (void)printf(")\n"); 537 } 538 539 struct statfs * 540 getmntpt(name) 541 const char *name; 542 { 543 struct statfs *mntbuf; 544 int i, mntsize; 545 546 mntsize = getmntinfo(&mntbuf, MNT_NOWAIT); 547 for (i = mntsize - 1; i >= 0; i--) { 548 if (strcmp(mntbuf[i].f_mntfromname, name) == 0 || 549 strcmp(mntbuf[i].f_mntonname, name) == 0) 550 return (&mntbuf[i]); 551 } 552 return (NULL); 553 } 554 555 char * 556 catopt(s0, s1) 557 char *s0; 558 const char *s1; 559 { 560 size_t i; 561 char *cp; 562 563 if (s1 == NULL || *s1 == '\0') 564 return s0; 565 566 if (s0 && *s0) { 567 i = strlen(s0) + strlen(s1) + 1 + 1; 568 if ((cp = malloc(i)) == NULL) 569 errx(1, "malloc failed"); 570 (void)snprintf(cp, i, "%s,%s", s0, s1); 571 } else 572 cp = strdup(s1); 573 574 if (s0) 575 free(s0); 576 return (cp); 577 } 578 579 void 580 mangle(options, argcp, argv) 581 char *options; 582 int *argcp; 583 const char **argv; 584 { 585 char *p, *s; 586 int argc; 587 588 argc = *argcp; 589 for (s = options; (p = strsep(&s, ",")) != NULL;) 590 if (*p != '\0') { 591 if (*p == '-') { 592 argv[argc++] = p; 593 p = strchr(p, '='); 594 if (p) { 595 *p = '\0'; 596 argv[argc++] = p+1; 597 } 598 } else if (strcmp(p, "rw") != 0) { 599 argv[argc++] = "-o"; 600 argv[argc++] = p; 601 } 602 } 603 604 *argcp = argc; 605 } 606 607 608 char * 609 update_options(opts, fstab, curflags) 610 char *opts; 611 char *fstab; 612 int curflags; 613 { 614 char *o, *p; 615 char *cur; 616 char *expopt, *newopt, *tmpopt; 617 618 if (opts == NULL) 619 return strdup(""); 620 621 /* remove meta options from list */ 622 remopt(fstab, MOUNT_META_OPTION_FSTAB); 623 remopt(fstab, MOUNT_META_OPTION_CURRENT); 624 cur = flags2opts(curflags); 625 626 /* 627 * Expand all meta-options passed to us first. 628 */ 629 expopt = NULL; 630 for (p = opts; (o = strsep(&p, ",")) != NULL;) { 631 if (strcmp(MOUNT_META_OPTION_FSTAB, o) == 0) 632 expopt = catopt(expopt, fstab); 633 else if (strcmp(MOUNT_META_OPTION_CURRENT, o) == 0) 634 expopt = catopt(expopt, cur); 635 else 636 expopt = catopt(expopt, o); 637 } 638 free(cur); 639 free(opts); 640 641 /* 642 * Remove previous contradictory arguments. Given option "foo" we 643 * remove all the "nofoo" options. Given "nofoo" we remove "nonofoo" 644 * and "foo" - so we can deal with possible options like "notice". 645 */ 646 newopt = NULL; 647 for (p = expopt; (o = strsep(&p, ",")) != NULL;) { 648 if ((tmpopt = malloc( strlen(o) + 2 + 1 )) == NULL) 649 errx(1, "malloc failed"); 650 651 strcpy(tmpopt, "no"); 652 strcat(tmpopt, o); 653 remopt(newopt, tmpopt); 654 free(tmpopt); 655 656 if (strncmp("no", o, 2) == 0) 657 remopt(newopt, o+2); 658 659 newopt = catopt(newopt, o); 660 } 661 free(expopt); 662 663 return newopt; 664 } 665 666 void 667 remopt(string, opt) 668 char *string; 669 const char *opt; 670 { 671 char *o, *p, *r; 672 673 if (string == NULL || *string == '\0' || opt == NULL || *opt == '\0') 674 return; 675 676 r = string; 677 678 for (p = string; (o = strsep(&p, ",")) != NULL;) { 679 if (strcmp(opt, o) != 0) { 680 if (*r == ',' && *o != '\0') 681 r++; 682 while ((*r++ = *o++) != '\0') 683 ; 684 *--r = ','; 685 } 686 } 687 *r = '\0'; 688 } 689 690 void 691 usage() 692 { 693 694 (void)fprintf(stderr, "%s\n%s\n%s\n", 695 "usage: mount [-dfpruvw] [-o options] [-t ufs | external_type] special node", 696 " mount [-adfpruvw] [-t ufs | external_type]", 697 " mount [-dfpruvw] special | node"); 698 exit(1); 699 } 700 701 void 702 putfsent(ent) 703 const struct statfs *ent; 704 { 705 struct fstab *fst; 706 char *opts; 707 708 opts = flags2opts(ent->f_flags); 709 printf("%s\t%s\t%s %s", ent->f_mntfromname, ent->f_mntonname, 710 ent->f_fstypename, opts); 711 free(opts); 712 713 if ((fst = getfsspec(ent->f_mntfromname))) 714 printf("\t%u %u\n", fst->fs_freq, fst->fs_passno); 715 else if ((fst = getfsfile(ent->f_mntonname))) 716 printf("\t%u %u\n", fst->fs_freq, fst->fs_passno); 717 else if (strcmp(ent->f_fstypename, "ufs") == 0) { 718 if (strcmp(ent->f_mntonname, "/") == 0) 719 printf("\t1 1\n"); 720 else 721 printf("\t2 2\n"); 722 } else 723 printf("\t0 0\n"); 724 } 725 726 727 char * 728 flags2opts(flags) 729 int flags; 730 { 731 char *res; 732 733 res = NULL; 734 735 res = catopt(res, (flags & MNT_RDONLY) ? "ro" : "rw"); 736 737 if (flags & MNT_SYNCHRONOUS) res = catopt(res, "sync"); 738 if (flags & MNT_NOEXEC) res = catopt(res, "noexec"); 739 if (flags & MNT_NOSUID) res = catopt(res, "nosuid"); 740 if (flags & MNT_NODEV) res = catopt(res, "nodev"); 741 if (flags & MNT_UNION) res = catopt(res, "union"); 742 if (flags & MNT_ASYNC) res = catopt(res, "async"); 743 if (flags & MNT_NOATIME) res = catopt(res, "noatime"); 744 if (flags & MNT_NOCLUSTERR) res = catopt(res, "noclusterr"); 745 if (flags & MNT_NOCLUSTERW) res = catopt(res, "noclusterw"); 746 if (flags & MNT_NOSYMFOLLOW) res = catopt(res, "nosymfollow"); 747 if (flags & MNT_SUIDDIR) res = catopt(res, "suiddir"); 748 749 return res; 750 } 751