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
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
main(int argc,char * const argv[])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 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
300 int
hasopt(const char * mntopts,const char * option)301 hasopt(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 */
320 char*
flags2opts(u_int32_t flags)321 flags2opts(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
335 int
mountfs(const char * vfstype,const char * spec,const char * name,const char * options,const char * mntopts,int skipmounted)336 mountfs(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
473 void
prmount(struct statfs * sf)474 prmount(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
624 struct statfs *
getmntpt(const char * name)625 getmntpt(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
638 static enum { IN_LIST, NOT_IN_LIST } which;
639
640 int
selected(const char * type)641 selected(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
654 void
maketypelist(char * fslist)655 maketypelist(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
690 char *
catopt(char * s0,const char * s1)691 catopt(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
707 void
mangle(char * options,int * argcp,const char ** argv,int argcmax)708 mangle(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
usage(void)734 usage(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
743 int
disklabelcheck(struct fstab * fs)744 disklabelcheck(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