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 * 4. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #ifndef lint 31 static const char copyright[] = 32 "@(#) Copyright (c) 1980, 1989, 1993, 1994\n\ 33 The Regents of the University of California. All rights reserved.\n"; 34 #endif /* not lint */ 35 36 #ifndef lint 37 #if 0 38 static char sccsid[] = "@(#)mount.c 8.25 (Berkeley) 5/8/95"; 39 #endif 40 static const char rcsid[] = 41 "$FreeBSD$"; 42 #endif /* not lint */ 43 44 #include <sys/param.h> 45 #include <sys/mount.h> 46 #include <sys/stat.h> 47 #include <sys/wait.h> 48 49 #include <ctype.h> 50 #include <err.h> 51 #include <errno.h> 52 #include <fstab.h> 53 #include <paths.h> 54 #include <pwd.h> 55 #include <signal.h> 56 #include <stdint.h> 57 #include <stdio.h> 58 #include <stdlib.h> 59 #include <string.h> 60 #include <unistd.h> 61 62 #include "extern.h" 63 #include "mntopts.h" 64 #include "pathnames.h" 65 66 /* `meta' options */ 67 #define MOUNT_META_OPTION_FSTAB "fstab" 68 #define MOUNT_META_OPTION_CURRENT "current" 69 70 int debug, fstab_style, verbose; 71 72 char *catopt(char *, const char *); 73 struct statfs *getmntpt(const char *); 74 int hasopt(const char *, const char *); 75 int ismounted(struct fstab *, struct statfs *, int); 76 int isremountable(const char *); 77 void mangle(char *, int *, char **); 78 char *update_options(char *, char *, int); 79 int mountfs(const char *, const char *, const char *, 80 int, const char *, const char *); 81 void remopt(char *, const char *); 82 void prmount(struct statfs *); 83 void putfsent(const struct statfs *); 84 void usage(void); 85 char *flags2opts(int); 86 87 /* Map from mount options to printable formats. */ 88 static struct opt { 89 int o_opt; 90 const char *o_name; 91 } optnames[] = { 92 { MNT_ASYNC, "asynchronous" }, 93 { MNT_EXPORTED, "NFS exported" }, 94 { MNT_LOCAL, "local" }, 95 { MNT_NOATIME, "noatime" }, 96 { MNT_NOEXEC, "noexec" }, 97 { MNT_NOSUID, "nosuid" }, 98 { MNT_NOSYMFOLLOW, "nosymfollow" }, 99 { MNT_QUOTA, "with quotas" }, 100 { MNT_RDONLY, "read-only" }, 101 { MNT_SYNCHRONOUS, "synchronous" }, 102 { MNT_UNION, "union" }, 103 { MNT_NOCLUSTERR, "noclusterr" }, 104 { MNT_NOCLUSTERW, "noclusterw" }, 105 { MNT_SUIDDIR, "suiddir" }, 106 { MNT_SOFTDEP, "soft-updates" }, 107 { MNT_MULTILABEL, "multilabel" }, 108 { MNT_ACLS, "acls" }, 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 static const char userquotaeq[] = "userquota="; 124 static const char groupquotaeq[] = "groupquota="; 125 126 static int 127 use_mountprog(const char *vfstype) 128 { 129 /* XXX: We need to get away from implementing external mount 130 * programs for every filesystem, and move towards having 131 * each filesystem properly implement the nmount() system call. 132 */ 133 unsigned int i; 134 const char *fs[] = { 135 "cd9660", "mfs", "msdosfs", "nfs", "nfs4", "ntfs", 136 "nwfs", "nullfs", "portalfs", "smbfs", "udf", "umapfs", 137 "unionfs", 138 NULL 139 }; 140 141 for (i=0; fs[i] != NULL; ++i) { 142 if (strcmp(vfstype, fs[i]) == 0) 143 return 1; 144 } 145 146 return 0; 147 } 148 149 static int 150 exec_mountprog(const char *name, const char *execname, 151 char *const argv[]) 152 { 153 pid_t pid; 154 int status; 155 156 switch (pid = fork()) { 157 case -1: /* Error. */ 158 warn("fork"); 159 exit (1); 160 case 0: /* Child. */ 161 /* Go find an executable. */ 162 execvP(execname, _PATH_SYSPATH, argv); 163 if (errno == ENOENT) { 164 warn("exec %s not found in %s", execname, 165 _PATH_SYSPATH); 166 } 167 exit(1); 168 default: /* Parent. */ 169 if (waitpid(pid, &status, 0) < 0) { 170 warn("waitpid"); 171 return (1); 172 } 173 174 if (WIFEXITED(status)) { 175 if (WEXITSTATUS(status) != 0) 176 return (WEXITSTATUS(status)); 177 } else if (WIFSIGNALED(status)) { 178 warnx("%s: %s", name, sys_siglist[WTERMSIG(status)]); 179 return (1); 180 } 181 break; 182 } 183 184 return (0); 185 } 186 187 int 188 main(int argc, char *argv[]) 189 { 190 const char *mntfromname, **vfslist, *vfstype; 191 struct fstab *fs; 192 struct statfs *mntbuf; 193 FILE *mountdfp; 194 pid_t pid; 195 int all, ch, i, init_flags, mntsize, rval, have_fstab, ro; 196 char *cp, *ep, *options; 197 198 all = init_flags = 0; 199 ro = 0; 200 options = NULL; 201 vfslist = NULL; 202 vfstype = "ufs"; 203 while ((ch = getopt(argc, argv, "adF:fo:prwt:uv")) != -1) 204 switch (ch) { 205 case 'a': 206 all = 1; 207 break; 208 case 'd': 209 debug = 1; 210 break; 211 case 'F': 212 setfstab(optarg); 213 break; 214 case 'f': 215 init_flags |= MNT_FORCE; 216 break; 217 case 'o': 218 if (*optarg) 219 options = catopt(options, optarg); 220 break; 221 case 'p': 222 fstab_style = 1; 223 verbose = 1; 224 break; 225 case 'r': 226 options = catopt(options, "ro"); 227 ro = 1; 228 break; 229 case 't': 230 if (vfslist != NULL) 231 errx(1, "only one -t option may be specified"); 232 vfslist = makevfslist(optarg); 233 vfstype = optarg; 234 break; 235 case 'u': 236 init_flags |= MNT_UPDATE; 237 break; 238 case 'v': 239 verbose = 1; 240 break; 241 case 'w': 242 options = catopt(options, "noro"); 243 break; 244 case '?': 245 default: 246 usage(); 247 /* NOTREACHED */ 248 } 249 argc -= optind; 250 argv += optind; 251 252 #define BADTYPE(type) \ 253 (strcmp(type, FSTAB_RO) && \ 254 strcmp(type, FSTAB_RW) && strcmp(type, FSTAB_RQ)) 255 256 if ((init_flags & MNT_UPDATE) && (ro == 0)) 257 options = catopt(options, "noro"); 258 259 rval = 0; 260 switch (argc) { 261 case 0: 262 if ((mntsize = getmntinfo(&mntbuf, MNT_NOWAIT)) == 0) 263 err(1, "getmntinfo"); 264 if (all) { 265 while ((fs = getfsent()) != NULL) { 266 if (BADTYPE(fs->fs_type)) 267 continue; 268 if (checkvfsname(fs->fs_vfstype, vfslist)) 269 continue; 270 if (hasopt(fs->fs_mntops, "noauto")) 271 continue; 272 if (!(init_flags & MNT_UPDATE) && 273 ismounted(fs, mntbuf, mntsize)) 274 continue; 275 options = update_options(options, fs->fs_mntops, 276 mntbuf->f_flags); 277 if (mountfs(fs->fs_vfstype, fs->fs_spec, 278 fs->fs_file, init_flags, options, 279 fs->fs_mntops)) 280 rval = 1; 281 } 282 } else if (fstab_style) { 283 for (i = 0; i < mntsize; i++) { 284 if (checkvfsname(mntbuf[i].f_fstypename, vfslist)) 285 continue; 286 putfsent(&mntbuf[i]); 287 } 288 } else { 289 for (i = 0; i < mntsize; i++) { 290 if (checkvfsname(mntbuf[i].f_fstypename, 291 vfslist)) 292 continue; 293 prmount(&mntbuf[i]); 294 } 295 } 296 exit(rval); 297 case 1: 298 if (vfslist != NULL) 299 usage(); 300 301 rmslashes(*argv, *argv); 302 if (init_flags & MNT_UPDATE) { 303 mntfromname = NULL; 304 have_fstab = 0; 305 if ((mntbuf = getmntpt(*argv)) == NULL) 306 errx(1, "not currently mounted %s", *argv); 307 /* 308 * Only get the mntflags from fstab if both mntpoint 309 * and mntspec are identical. Also handle the special 310 * case where just '/' is mounted and 'spec' is not 311 * identical with the one from fstab ('/dev' is missing 312 * in the spec-string at boot-time). 313 */ 314 if ((fs = getfsfile(mntbuf->f_mntonname)) != NULL) { 315 if (strcmp(fs->fs_spec, 316 mntbuf->f_mntfromname) == 0 && 317 strcmp(fs->fs_file, 318 mntbuf->f_mntonname) == 0) { 319 have_fstab = 1; 320 mntfromname = mntbuf->f_mntfromname; 321 } else if (argv[0][0] == '/' && 322 argv[0][1] == '\0') { 323 fs = getfsfile("/"); 324 have_fstab = 1; 325 mntfromname = fs->fs_spec; 326 } 327 } 328 if (have_fstab) { 329 options = update_options(options, fs->fs_mntops, 330 mntbuf->f_flags); 331 } else { 332 mntfromname = mntbuf->f_mntfromname; 333 options = update_options(options, NULL, 334 mntbuf->f_flags); 335 } 336 rval = mountfs(mntbuf->f_fstypename, mntfromname, 337 mntbuf->f_mntonname, init_flags, options, 0); 338 break; 339 } 340 if ((fs = getfsfile(*argv)) == NULL && 341 (fs = getfsspec(*argv)) == NULL) 342 errx(1, "%s: unknown special file or file system", 343 *argv); 344 if (BADTYPE(fs->fs_type)) 345 errx(1, "%s has unknown file system type", 346 *argv); 347 rval = mountfs(fs->fs_vfstype, fs->fs_spec, fs->fs_file, 348 init_flags, options, fs->fs_mntops); 349 break; 350 case 2: 351 /* 352 * If -t flag has not been specified, the path cannot be 353 * found, spec contains either a ':' or a '@', then assume 354 * that an NFS file system is being specified ala Sun. 355 * Check if the hostname contains only allowed characters 356 * to reduce false positives. IPv6 addresses containing 357 * ':' will be correctly parsed only if the separator is '@'. 358 * The definition of a valid hostname is taken from RFC 1034. 359 */ 360 if (vfslist == NULL && ((ep = strchr(argv[0], '@')) != NULL || 361 (ep = strchr(argv[0], ':')) != NULL)) { 362 if (*ep == '@') { 363 cp = ep + 1; 364 ep = cp + strlen(cp); 365 } else 366 cp = argv[0]; 367 while (cp != ep) { 368 if (!isdigit(*cp) && !isalpha(*cp) && 369 *cp != '.' && *cp != '-' && *cp != ':') 370 break; 371 cp++; 372 } 373 if (cp == ep) 374 vfstype = "nfs"; 375 } 376 rval = mountfs(vfstype, 377 argv[0], argv[1], init_flags, options, NULL); 378 break; 379 default: 380 usage(); 381 /* NOTREACHED */ 382 } 383 384 /* 385 * If the mount was successfully, and done by root, tell mountd the 386 * good news. Pid checks are probably unnecessary, but don't hurt. 387 */ 388 if (rval == 0 && getuid() == 0 && 389 (mountdfp = fopen(_PATH_MOUNTDPID, "r")) != NULL) { 390 if (fscanf(mountdfp, "%d", &pid) == 1 && 391 pid > 0 && kill(pid, SIGHUP) == -1 && errno != ESRCH) 392 err(1, "signal mountd"); 393 (void)fclose(mountdfp); 394 } 395 396 exit(rval); 397 } 398 399 int 400 ismounted(struct fstab *fs, struct statfs *mntbuf, int mntsize) 401 { 402 char realfsfile[PATH_MAX]; 403 int i; 404 405 if (fs->fs_file[0] == '/' && fs->fs_file[1] == '\0') 406 /* the root file system can always be remounted */ 407 return (0); 408 409 /* The user may have specified a symlink in fstab, resolve the path */ 410 if (realpath(fs->fs_file, realfsfile) == NULL) { 411 /* Cannot resolve the path, use original one */ 412 strlcpy(realfsfile, fs->fs_file, sizeof(realfsfile)); 413 } 414 415 for (i = mntsize - 1; i >= 0; --i) 416 if (strcmp(realfsfile, mntbuf[i].f_mntonname) == 0 && 417 (!isremountable(fs->fs_vfstype) || 418 strcmp(fs->fs_spec, mntbuf[i].f_mntfromname) == 0)) 419 return (1); 420 return (0); 421 } 422 423 int 424 isremountable(const char *vfsname) 425 { 426 const char **cp; 427 428 for (cp = remountable_fs_names; *cp; cp++) 429 if (strcmp(*cp, vfsname) == 0) 430 return (1); 431 return (0); 432 } 433 434 int 435 hasopt(const char *mntopts, const char *option) 436 { 437 int negative, found; 438 char *opt, *optbuf; 439 440 if (option[0] == 'n' && option[1] == 'o') { 441 negative = 1; 442 option += 2; 443 } else 444 negative = 0; 445 optbuf = strdup(mntopts); 446 found = 0; 447 for (opt = optbuf; (opt = strtok(opt, ",")) != NULL; opt = NULL) { 448 if (opt[0] == 'n' && opt[1] == 'o') { 449 if (!strcasecmp(opt + 2, option)) 450 found = negative; 451 } else if (!strcasecmp(opt, option)) 452 found = !negative; 453 } 454 free(optbuf); 455 return (found); 456 } 457 458 int 459 mountfs(const char *vfstype, const char *spec, const char *name, int flags, 460 const char *options, const char *mntopts) 461 { 462 char *argv[100]; 463 struct statfs sf; 464 int argc, i, ret; 465 char *optbuf, execname[PATH_MAX], mntpath[PATH_MAX]; 466 467 /* resolve the mountpoint with realpath(3) */ 468 (void)checkpath(name, mntpath); 469 name = mntpath; 470 471 if (mntopts == NULL) 472 mntopts = ""; 473 optbuf = catopt(strdup(mntopts), options); 474 475 if (strcmp(name, "/") == 0) 476 flags |= MNT_UPDATE; 477 if (flags & MNT_FORCE) 478 optbuf = catopt(optbuf, "force"); 479 if (flags & MNT_RDONLY) 480 optbuf = catopt(optbuf, "ro"); 481 /* 482 * XXX 483 * The mount_mfs (newfs) command uses -o to select the 484 * optimization mode. We don't pass the default "-o rw" 485 * for that reason. 486 */ 487 if (flags & MNT_UPDATE) 488 optbuf = catopt(optbuf, "update"); 489 490 /* Compatibility glue. */ 491 if (strcmp(vfstype, "msdos") == 0) 492 vfstype = "msdosfs"; 493 494 /* Construct the name of the appropriate mount command */ 495 (void)snprintf(execname, sizeof(execname), "mount_%s", vfstype); 496 497 argc = 0; 498 argv[argc++] = execname; 499 mangle(optbuf, &argc, argv); 500 argv[argc++] = strdup(spec); 501 argv[argc++] = strdup(name); 502 argv[argc] = NULL; 503 504 if (debug) { 505 (void)printf("exec: mount_%s", vfstype); 506 for (i = 1; i < argc; i++) 507 (void)printf(" %s", argv[i]); 508 (void)printf("\n"); 509 return (0); 510 } 511 512 if (use_mountprog(vfstype)) { 513 ret = exec_mountprog(name, execname, argv); 514 } else { 515 ret = mount_fs(vfstype, argc, argv); 516 } 517 518 free(optbuf); 519 520 if (verbose) { 521 if (statfs(name, &sf) < 0) { 522 warn("statfs %s", name); 523 return (1); 524 } 525 if (fstab_style) 526 putfsent(&sf); 527 else 528 prmount(&sf); 529 } 530 531 return (0); 532 } 533 534 void 535 prmount(struct statfs *sfp) 536 { 537 int flags; 538 unsigned int i; 539 struct opt *o; 540 struct passwd *pw; 541 542 (void)printf("%s on %s (%s", sfp->f_mntfromname, sfp->f_mntonname, 543 sfp->f_fstypename); 544 545 flags = sfp->f_flags & MNT_VISFLAGMASK; 546 for (o = optnames; flags && o->o_opt; o++) 547 if (flags & o->o_opt) { 548 (void)printf(", %s", o->o_name); 549 flags &= ~o->o_opt; 550 } 551 /* 552 * Inform when file system is mounted by an unprivileged user 553 * or privileged non-root user. 554 */ 555 if ((flags & MNT_USER) != 0 || sfp->f_owner != 0) { 556 (void)printf(", mounted by "); 557 if ((pw = getpwuid(sfp->f_owner)) != NULL) 558 (void)printf("%s", pw->pw_name); 559 else 560 (void)printf("%d", sfp->f_owner); 561 } 562 if (verbose) { 563 if (sfp->f_syncwrites != 0 || sfp->f_asyncwrites != 0) 564 (void)printf(", writes: sync %ju async %ju", 565 (uintmax_t)sfp->f_syncwrites, 566 (uintmax_t)sfp->f_asyncwrites); 567 if (sfp->f_syncreads != 0 || sfp->f_asyncreads != 0) 568 (void)printf(", reads: sync %ju async %ju", 569 (uintmax_t)sfp->f_syncreads, 570 (uintmax_t)sfp->f_asyncreads); 571 if (sfp->f_fsid.val[0] != 0 || sfp->f_fsid.val[1] != 0) { 572 printf(", fsid "); 573 for (i = 0; i < sizeof(sfp->f_fsid); i++) 574 printf("%02x", ((u_char *)&sfp->f_fsid)[i]); 575 } 576 } 577 (void)printf(")\n"); 578 } 579 580 struct statfs * 581 getmntpt(const char *name) 582 { 583 struct statfs *mntbuf; 584 int i, mntsize; 585 586 mntsize = getmntinfo(&mntbuf, MNT_NOWAIT); 587 for (i = mntsize - 1; i >= 0; i--) { 588 if (strcmp(mntbuf[i].f_mntfromname, name) == 0 || 589 strcmp(mntbuf[i].f_mntonname, name) == 0) 590 return (&mntbuf[i]); 591 } 592 return (NULL); 593 } 594 595 char * 596 catopt(char *s0, const char *s1) 597 { 598 size_t i; 599 char *cp; 600 601 if (s1 == NULL || *s1 == '\0') 602 return s0; 603 604 if (s0 && *s0) { 605 i = strlen(s0) + strlen(s1) + 1 + 1; 606 if ((cp = malloc(i)) == NULL) 607 errx(1, "malloc failed"); 608 (void)snprintf(cp, i, "%s,%s", s0, s1); 609 } else 610 cp = strdup(s1); 611 612 if (s0) 613 free(s0); 614 return (cp); 615 } 616 617 void 618 mangle(options, argcp, argv) 619 char *options; 620 int *argcp; 621 char **argv; 622 { 623 char *p, *s; 624 int argc; 625 626 argc = *argcp; 627 for (s = options; (p = strsep(&s, ",")) != NULL;) 628 if (*p != '\0') { 629 if (strcmp(p, "noauto") == 0) { 630 /* 631 * Do not pass noauto option to nmount(). 632 * or external mount program. noauto is 633 * only used to prevent mounting a filesystem 634 * when 'mount -a' is specified, and is 635 * not a real mount option. 636 */ 637 continue; 638 } else if (strcmp(p, "userquota") == 0) { 639 continue; 640 } else if (strncmp(p, userquotaeq, 641 sizeof(userquotaeq) - 1) == 0) { 642 continue; 643 } else if (strcmp(p, "groupquota") == 0) { 644 continue; 645 } else if (strncmp(p, groupquotaeq, 646 sizeof(groupquotaeq) - 1) == 0) { 647 continue; 648 } else if (*p == '-') { 649 argv[argc++] = p; 650 p = strchr(p, '='); 651 if (p != NULL) { 652 *p = '\0'; 653 argv[argc++] = p+1; 654 } 655 } else { 656 argv[argc++] = strdup("-o"); 657 argv[argc++] = p; 658 } 659 } 660 661 *argcp = argc; 662 } 663 664 665 char * 666 update_options(opts, fstab, curflags) 667 char *opts; 668 char *fstab; 669 int curflags; 670 { 671 char *o, *p; 672 char *cur; 673 char *expopt, *newopt, *tmpopt; 674 675 if (opts == NULL) 676 return strdup(""); 677 678 /* remove meta options from list */ 679 remopt(fstab, MOUNT_META_OPTION_FSTAB); 680 remopt(fstab, MOUNT_META_OPTION_CURRENT); 681 cur = flags2opts(curflags); 682 683 /* 684 * Expand all meta-options passed to us first. 685 */ 686 expopt = NULL; 687 for (p = opts; (o = strsep(&p, ",")) != NULL;) { 688 if (strcmp(MOUNT_META_OPTION_FSTAB, o) == 0) 689 expopt = catopt(expopt, fstab); 690 else if (strcmp(MOUNT_META_OPTION_CURRENT, o) == 0) 691 expopt = catopt(expopt, cur); 692 else 693 expopt = catopt(expopt, o); 694 } 695 free(cur); 696 free(opts); 697 698 /* 699 * Remove previous contradictory arguments. Given option "foo" we 700 * remove all the "nofoo" options. Given "nofoo" we remove "nonofoo" 701 * and "foo" - so we can deal with possible options like "notice". 702 */ 703 newopt = NULL; 704 for (p = expopt; (o = strsep(&p, ",")) != NULL;) { 705 if ((tmpopt = malloc( strlen(o) + 2 + 1 )) == NULL) 706 errx(1, "malloc failed"); 707 708 strcpy(tmpopt, "no"); 709 strcat(tmpopt, o); 710 remopt(newopt, tmpopt); 711 free(tmpopt); 712 713 if (strncmp("no", o, 2) == 0) 714 remopt(newopt, o+2); 715 716 newopt = catopt(newopt, o); 717 } 718 free(expopt); 719 720 return newopt; 721 } 722 723 void 724 remopt(string, opt) 725 char *string; 726 const char *opt; 727 { 728 char *o, *p, *r; 729 730 if (string == NULL || *string == '\0' || opt == NULL || *opt == '\0') 731 return; 732 733 r = string; 734 735 for (p = string; (o = strsep(&p, ",")) != NULL;) { 736 if (strcmp(opt, o) != 0) { 737 if (*r == ',' && *o != '\0') 738 r++; 739 while ((*r++ = *o++) != '\0') 740 ; 741 *--r = ','; 742 } 743 } 744 *r = '\0'; 745 } 746 747 void 748 usage() 749 { 750 751 (void)fprintf(stderr, "%s\n%s\n%s\n", 752 "usage: mount [-adfpruvw] [-F fstab] [-o options] [-t ufs | external_type]", 753 " mount [-dfpruvw] special | node", 754 " mount [-dfpruvw] [-o options] [-t ufs | external_type] special node"); 755 exit(1); 756 } 757 758 void 759 putfsent(ent) 760 const struct statfs *ent; 761 { 762 struct fstab *fst; 763 char *opts; 764 765 opts = flags2opts(ent->f_flags); 766 767 /* 768 * "rw" is not a real mount option; this is why we print NULL as "rw" 769 * if opts is still NULL here. 770 */ 771 printf("%s\t%s\t%s %s", ent->f_mntfromname, ent->f_mntonname, 772 ent->f_fstypename, opts ? opts : "rw"); 773 free(opts); 774 775 if ((fst = getfsspec(ent->f_mntfromname))) 776 printf("\t%u %u\n", fst->fs_freq, fst->fs_passno); 777 else if ((fst = getfsfile(ent->f_mntonname))) 778 printf("\t%u %u\n", fst->fs_freq, fst->fs_passno); 779 else if (strcmp(ent->f_fstypename, "ufs") == 0) { 780 if (strcmp(ent->f_mntonname, "/") == 0) 781 printf("\t1 1\n"); 782 else 783 printf("\t2 2\n"); 784 } else 785 printf("\t0 0\n"); 786 } 787 788 789 char * 790 flags2opts(flags) 791 int flags; 792 { 793 char *res; 794 795 res = NULL; 796 797 if (flags & MNT_RDONLY) res = catopt(res, "ro"); 798 if (flags & MNT_SYNCHRONOUS) res = catopt(res, "sync"); 799 if (flags & MNT_NOEXEC) res = catopt(res, "noexec"); 800 if (flags & MNT_NOSUID) res = catopt(res, "nosuid"); 801 if (flags & MNT_UNION) res = catopt(res, "union"); 802 if (flags & MNT_ASYNC) res = catopt(res, "async"); 803 if (flags & MNT_NOATIME) res = catopt(res, "noatime"); 804 if (flags & MNT_NOCLUSTERR) res = catopt(res, "noclusterr"); 805 if (flags & MNT_NOCLUSTERW) res = catopt(res, "noclusterw"); 806 if (flags & MNT_NOSYMFOLLOW) res = catopt(res, "nosymfollow"); 807 if (flags & MNT_SUIDDIR) res = catopt(res, "suiddir"); 808 if (flags & MNT_MULTILABEL) res = catopt(res, "multilabel"); 809 if (flags & MNT_ACLS) res = catopt(res, "acls"); 810 811 return res; 812 } 813