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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	sbin/umount/umount.c	Lines:	0	158	0.0 %
Date:	2016-12-06	Branches:	0	134	0.0 %


/*	$OpenBSD: umount.c,v 1.26 2015/01/16 06:40:01 deraadt Exp $	*/
/*	$NetBSD: umount.c,v 1.16 1996/05/11 14:13:55 mycroft Exp $	*/

/*-
 * Copyright (c) 1980, 1989, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <sys/stat.h>
#include <sys/mount.h>
#include <sys/time.h>
#include <sys/socket.h>
#include <sys/socketvar.h>

#include <netdb.h>
#include <rpc/rpc.h>
#include <rpc/pmap_clnt.h>
#include <rpc/pmap_prot.h>
#include <nfs/rpcv2.h>

#include <err.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <limits.h>
#include <util.h>

typedef enum { MNTON, MNTFROM } mntwhat;

int	fflag, verbose;
char	**typelist = NULL;
char	*nfshost;

char	*getmntname(char *, mntwhat, char *);
void	 maketypelist(char *);
int	 selected(const char *);
int	 namematch(struct hostent *);
int	 umountall(void);
int	 umountfs(char *);
void	 usage(void);
int	 xdr_dir(XDR *, char *);

int
main(int argc, char *argv[])
{
	int all, ch, errs;

	/* Start disks transferring immediately. */
	sync();

	all = 0;
	while ((ch = getopt(argc, argv, "afh:t:v")) != -1)
		switch (ch) {
		case 'a':
			all = 1;
			break;
		case 'f':
			fflag = MNT_FORCE;
			break;
		case 'h':	/* -h implies -a. */
			all = 1;
			nfshost = optarg;
			break;
		case 't':
			if (typelist != NULL)
				errx(1, "only one -t option may be specified.");
			maketypelist(optarg);
			break;
		case 'v':
			verbose = 1;
			break;
		default:
			usage();
			/* NOTREACHED */
		}
	argc -= optind;
	argv += optind;

	if ((argc == 0 && !all) || (argc != 0 && all))
		usage();

	/* -h implies "-t nfs" if no -t flag. */
	if ((nfshost != NULL) && (typelist == NULL))
		maketypelist(MOUNT_NFS);

	if (all)
		errs = umountall();
	else
		for (errs = 0; *argv != NULL; ++argv)
			if (umountfs(*argv) != 0)
				errs = 1;
	return (errs);
}

int
umountall(void)
{
	struct statfs *fs;
	int n;
	int rval;

	n = getmntinfo(&fs, MNT_NOWAIT);
	if (n == 0)
		err(1, NULL);

	rval = 0;
	while (--n >= 0) {
		/* Ignore the root. */
		if (strncmp(fs[n].f_mntonname, "/", MNAMELEN) == 0)
			continue;
		if (!selected(fs[n].f_fstypename))
			continue;
		if (umountfs(fs[n].f_mntonname))
			rval = 1;
	}
	return (rval);
}

int
umountfs(char *oname)
{
	struct hostent *hp;
	struct sockaddr_in saddr;
	struct stat sb;
	struct timeval pertry, try;
	CLIENT *clp;
	int so;
	char *delimp, *hostp, *mntpt;
	char *name, *newname, rname[PATH_MAX], type[MFSNAMELEN];

	if (isduid(oname, 0) || realpath(oname, rname) == NULL)
		mntpt = name = oname;
	else
		mntpt = name = rname;
	newname = NULL;

	/* If we can stat the file, check to see if it is a device or non-dir */
	if (stat(name, &sb) == 0) {
	    if (S_ISBLK(sb.st_mode)) {
		if ((mntpt = getmntname(name, MNTON, type)) == NULL) {
			warnx("%s: not currently mounted", name);
			return (1);
		}
	    } else if (!S_ISDIR(sb.st_mode)) {
		warnx("%s: not a directory or special device", name);
		return (1);
	    }
	}

	/*
	 * Look up the name in the mount table.
	 * 99.9% of the time the path in the kernel is the one
	 * realpath() returns but check the original just in case...
	 */
	if (!(newname = getmntname(name, MNTFROM, type)) &&
	    !(mntpt = getmntname(name, MNTON, type)) ) {
		mntpt = oname;
		if (!(newname = getmntname(oname, MNTFROM, type)) &&
		    !(mntpt = getmntname(oname, MNTON, type))) {
			warnx("%s: not currently mounted", oname);
			return (1);
		}
	}
	if (newname)
		name = newname;

	if (!selected(type))
		return (1);

	if (!strncmp(type, MOUNT_NFS, MFSNAMELEN)) {
		if ((delimp = strchr(name, '@')) != NULL) {
			hostp = delimp + 1;
			*delimp = '\0';
			hp = gethostbyname(hostp);
			*delimp = '@';
		} else if ((delimp = strchr(name, ':')) != NULL) {
			*delimp = '\0';
			hostp = name;
			hp = gethostbyname(hostp);
			name = delimp + 1;
			*delimp = ':';
		} else
			hp = NULL;
		if (!namematch(hp))
			return (1);
	}

	if (verbose)
		printf("%s: unmount from %s\n", name, mntpt);

	if (unmount(mntpt, fflag) < 0) {
		warn("%s", mntpt);
		return (1);
	}

#ifndef NO_NFS
	if (!strncmp(type, MOUNT_NFS, MFSNAMELEN) &&
	    (hp != NULL) && !(fflag & MNT_FORCE)) {
		enum clnt_stat clnt_stat;

		*delimp = '\0';
		memset(&saddr, 0, sizeof(saddr));
		saddr.sin_family = AF_INET;
		saddr.sin_port = 0;
		memmove(&saddr.sin_addr, hp->h_addr, hp->h_length);
		pertry.tv_sec = 3;
		pertry.tv_usec = 0;
		so = RPC_ANYSOCK;
		if ((clp = clntudp_create(&saddr,
		    RPCPROG_MNT, RPCMNT_VER1, pertry, &so)) == NULL) {
			clnt_pcreateerror("Cannot MNT RPC");
			return (1);
		}
		clp->cl_auth = authunix_create_default();
		try.tv_sec = 20;
		try.tv_usec = 0;
		clnt_stat = clnt_call(clp,
		    RPCMNT_UMOUNT, xdr_dir, name, xdr_void, (caddr_t)0, try);
		if (clnt_stat != RPC_SUCCESS) {
			clnt_perror(clp, "Bad MNT RPC");
			return (1);
		}
		auth_destroy(clp->cl_auth);
		clnt_destroy(clp);
	}
#endif
	return (0);
}

char *
getmntname(char *name, mntwhat what, char *type)
{
	struct statfs *mntbuf;
	int n;

	if ((n = getmntinfo(&mntbuf, MNT_NOWAIT)) == 0) {
		warn("getmntinfo");
		return (NULL);
	}
	while (--n >= 0) {
		if ((what == MNTON) &&
		    (strncmp(mntbuf[n].f_mntfromname, name, MNAMELEN) == 0 ||
		     strncmp(mntbuf[n].f_mntfromspec, name, MNAMELEN) == 0)) {
			if (type)
				memcpy(type, mntbuf[n].f_fstypename,
				    sizeof(mntbuf[n].f_fstypename));
			return (mntbuf[n].f_mntonname);
		}
		if ((what == MNTFROM) &&
		    (strncmp(mntbuf[n].f_mntonname, name, MNAMELEN) == 0)) {
			if (type)
				memcpy(type, mntbuf[n].f_fstypename,
				    sizeof(mntbuf[n].f_fstypename));
			return (mntbuf[n].f_mntfromname);
		}
	}
	return (NULL);
}

static enum { IN_LIST, NOT_IN_LIST } which;

int
selected(const char *type)
{
	char **av;

	/* If no type specified, it's always selected. */
	if (typelist == NULL)
		return (1);
	for (av = typelist; *av != NULL; ++av)
		if (!strncmp(type, *av, MFSNAMELEN))
			return (which == IN_LIST ? 1 : 0);
	return (which == IN_LIST ? 0 : 1);
}

void
maketypelist(char *fslist)
{
	int i;
	char *nextcp, **av;

	if ((fslist == NULL) || (fslist[0] == '\0'))
		errx(1, "empty type list");

	/*
	 * XXX
	 * Note: the syntax is "noxxx,yyy" for no xxx's and
	 * no yyy's, not the more intuitive "noxxx,noyyy".
	 */
	if (fslist[0] == 'n' && fslist[1] == 'o') {
		fslist += 2;
		which = NOT_IN_LIST;
	} else
		which = IN_LIST;

	/* Count the number of types. */
	for (i = 1, nextcp = fslist; (nextcp = strchr(nextcp, ',')); i++)
		++nextcp;

	/* Build an array of that many types. */
	if ((av = typelist = calloc(i + 1, sizeof(char *))) == NULL)
		err(1, NULL);
	av[0] = fslist;
	for (i = 1, nextcp = fslist; (nextcp = strchr(nextcp, ',')); i++) {
		*nextcp = '\0';
		av[i] = ++nextcp;
	}
	/* Terminate the array. */
	av[i] = NULL;
}

int
namematch(struct hostent *hp)
{
	char *cp, **np;

	if ((hp == NULL) || (nfshost == NULL))
		return (1);

	if (strcasecmp(nfshost, hp->h_name) == 0)
		return (1);

	if ((cp = strchr(hp->h_name, '.')) != NULL) {
		*cp = '\0';
		if (strcasecmp(nfshost, hp->h_name) == 0)
			return (1);
	}
	for (np = hp->h_aliases; *np; np++) {
		if (strcasecmp(nfshost, *np) == 0)
			return (1);
		if ((cp = strchr(*np, '.')) != NULL) {
			*cp = '\0';
			if (strcasecmp(nfshost, *np) == 0)
				return (1);
		}
	}
	return (0);
}

#ifndef NO_NFS
/*
 * xdr routines for mount rpc's
 */
int
xdr_dir(XDR *xdrsp, char *dirp)
{
	return (xdr_string(xdrsp, &dirp, RPCMNT_PATHLEN));
}
#endif

void
usage(void)
{
	fprintf(stderr,
	    "usage: %s\n       %s\n",
	    "umount [-fv] special | node",
	    "umount -a [-fv] [-h host] [-t type]");
	exit(1);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: umount.c,v 1.26 2015/01/16 06:40:01 deraadt Exp $ */
2			/* $NetBSD: umount.c,v 1.16 1996/05/11 14:13:55 mycroft Exp $ */
3
4			/*-
5			* Copyright (c) 1980, 1989, 1993
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/stat.h>
34			#include <sys/mount.h>
35			#include <sys/time.h>
36			#include <sys/socket.h>
37			#include <sys/socketvar.h>
38
39			#include <netdb.h>
40			#include <rpc/rpc.h>
41			#include <rpc/pmap_clnt.h>
42			#include <rpc/pmap_prot.h>
43			#include <nfs/rpcv2.h>
44
45			#include <err.h>
46			#include <stdio.h>
47			#include <stdlib.h>
48			#include <string.h>
49			#include <unistd.h>
50			#include <limits.h>
51			#include <util.h>
52
53			typedef enum { MNTON, MNTFROM } mntwhat;
54
55			int fflag, verbose;
56			char **typelist = NULL;
57			char *nfshost;
58
59			char getmntname(char , mntwhat, char *);
60			void maketypelist(char *);
61			int selected(const char *);
62			int namematch(struct hostent *);
63			int umountall(void);
64			int umountfs(char *);
65			void usage(void);
66			int xdr_dir(XDR , char );
67
68			int
69			main(int argc, char *argv[])
70			{
71			int all, ch, errs;
72
73			/* Start disks transferring immediately. */
74			sync();
75
76			all = 0;
77			while ((ch = getopt(argc, argv, "afh:t:v")) != -1)
78			switch (ch) {
79			case 'a':
80			all = 1;
81			break;
82			case 'f':
83			fflag = MNT_FORCE;
84			break;
85			case 'h': /* -h implies -a. */
86			all = 1;
87			nfshost = optarg;
88			break;
89			case 't':
90			if (typelist != NULL)
91			errx(1, "only one -t option may be specified.");
92			maketypelist(optarg);
93			break;
94			case 'v':
95			verbose = 1;
96			break;
97			default:
98			usage();
99			/* NOTREACHED */
100			}
101			argc -= optind;
102			argv += optind;
103
104			if ((argc == 0 && !all) \|\| (argc != 0 && all))
105			usage();
106
107			/* -h implies "-t nfs" if no -t flag. */
108			if ((nfshost != NULL) && (typelist == NULL))
109			maketypelist(MOUNT_NFS);
110
111			if (all)
112			errs = umountall();
113			else
114			for (errs = 0; *argv != NULL; ++argv)
115			if (umountfs(*argv) != 0)
116			errs = 1;
117			return (errs);
118			}
119
120			int
121			umountall(void)
122			{
123			struct statfs *fs;
124			int n;
125			int rval;
126
127			n = getmntinfo(&fs, MNT_NOWAIT);
128			if (n == 0)
129			err(1, NULL);
130
131			rval = 0;
132			while (--n >= 0) {
133			/* Ignore the root. */
134			if (strncmp(fs[n].f_mntonname, "/", MNAMELEN) == 0)
135			continue;
136			if (!selected(fs[n].f_fstypename))
137			continue;
138			if (umountfs(fs[n].f_mntonname))
139			rval = 1;
140			}
141			return (rval);
142			}
143
144			int
145			umountfs(char *oname)
146			{
147			struct hostent *hp;
148			struct sockaddr_in saddr;
149			struct stat sb;
150			struct timeval pertry, try;
151			CLIENT *clp;
152			int so;
153			char delimp, hostp, *mntpt;
154			char name, newname, rname[PATH_MAX], type[MFSNAMELEN];
155
156			if (isduid(oname, 0) \|\| realpath(oname, rname) == NULL)
157			mntpt = name = oname;
158			else
159			mntpt = name = rname;
160			newname = NULL;
161
162			/* If we can stat the file, check to see if it is a device or non-dir */
163			if (stat(name, &sb) == 0) {
164			if (S_ISBLK(sb.st_mode)) {
165			if ((mntpt = getmntname(name, MNTON, type)) == NULL) {
166			warnx("%s: not currently mounted", name);
167			return (1);
168			}
169			} else if (!S_ISDIR(sb.st_mode)) {
170			warnx("%s: not a directory or special device", name);
171			return (1);
172			}
173			}
174
175			/*
176			* Look up the name in the mount table.
177			* 99.9% of the time the path in the kernel is the one
178			* realpath() returns but check the original just in case...
179			*/
180			if (!(newname = getmntname(name, MNTFROM, type)) &&
181			!(mntpt = getmntname(name, MNTON, type)) ) {
182			mntpt = oname;
183			if (!(newname = getmntname(oname, MNTFROM, type)) &&
184			!(mntpt = getmntname(oname, MNTON, type))) {
185			warnx("%s: not currently mounted", oname);
186			return (1);
187			}
188			}
189			if (newname)
190			name = newname;
191
192			if (!selected(type))
193			return (1);
194
195			if (!strncmp(type, MOUNT_NFS, MFSNAMELEN)) {
196			if ((delimp = strchr(name, '@')) != NULL) {
197			hostp = delimp + 1;
198			*delimp = '\0';
199			hp = gethostbyname(hostp);
200			*delimp = '@';
201			} else if ((delimp = strchr(name, ':')) != NULL) {
202			*delimp = '\0';
203			hostp = name;
204			hp = gethostbyname(hostp);
205			name = delimp + 1;
206			*delimp = ':';
207			} else
208			hp = NULL;
209			if (!namematch(hp))
210			return (1);
211			}
212
213			if (verbose)
214			printf("%s: unmount from %s\n", name, mntpt);
215
216			if (unmount(mntpt, fflag) < 0) {
217			warn("%s", mntpt);
218			return (1);
219			}
220
221			#ifndef NO_NFS
222			if (!strncmp(type, MOUNT_NFS, MFSNAMELEN) &&
223			(hp != NULL) && !(fflag & MNT_FORCE)) {
224			enum clnt_stat clnt_stat;
225
226			*delimp = '\0';
227			memset(&saddr, 0, sizeof(saddr));
228			saddr.sin_family = AF_INET;
229			saddr.sin_port = 0;
230			memmove(&saddr.sin_addr, hp->h_addr, hp->h_length);
231			pertry.tv_sec = 3;
232			pertry.tv_usec = 0;
233			so = RPC_ANYSOCK;
234			if ((clp = clntudp_create(&saddr,
235			RPCPROG_MNT, RPCMNT_VER1, pertry, &so)) == NULL) {
236			clnt_pcreateerror("Cannot MNT RPC");
237			return (1);
238			}
239			clp->cl_auth = authunix_create_default();
240			try.tv_sec = 20;
241			try.tv_usec = 0;
242			clnt_stat = clnt_call(clp,
243			RPCMNT_UMOUNT, xdr_dir, name, xdr_void, (caddr_t)0, try);
244			if (clnt_stat != RPC_SUCCESS) {
245			clnt_perror(clp, "Bad MNT RPC");
246			return (1);
247			}
248			auth_destroy(clp->cl_auth);
249			clnt_destroy(clp);
250			}
251			#endif
252			return (0);
253			}
254
255			char *
256			getmntname(char name, mntwhat what, char type)
257			{
258			struct statfs *mntbuf;
259			int n;
260
261			if ((n = getmntinfo(&mntbuf, MNT_NOWAIT)) == 0) {
262			warn("getmntinfo");
263			return (NULL);
264			}
265			while (--n >= 0) {
266			if ((what == MNTON) &&
267			(strncmp(mntbuf[n].f_mntfromname, name, MNAMELEN) == 0 \|\|
268			strncmp(mntbuf[n].f_mntfromspec, name, MNAMELEN) == 0)) {
269			if (type)
270			memcpy(type, mntbuf[n].f_fstypename,
271			sizeof(mntbuf[n].f_fstypename));
272			return (mntbuf[n].f_mntonname);
273			}
274			if ((what == MNTFROM) &&
275			(strncmp(mntbuf[n].f_mntonname, name, MNAMELEN) == 0)) {
276			if (type)
277			memcpy(type, mntbuf[n].f_fstypename,
278			sizeof(mntbuf[n].f_fstypename));
279			return (mntbuf[n].f_mntfromname);
280			}
281			}
282			return (NULL);
283			}
284
285			static enum { IN_LIST, NOT_IN_LIST } which;
286
287			int
288			selected(const char *type)
289			{
290			char **av;
291
292			/* If no type specified, it's always selected. */
293			if (typelist == NULL)
294			return (1);
295			for (av = typelist; *av != NULL; ++av)
296			if (!strncmp(type, *av, MFSNAMELEN))
297			return (which == IN_LIST ? 1 : 0);
298			return (which == IN_LIST ? 0 : 1);
299			}
300
301			void
302			maketypelist(char *fslist)
303			{
304			int i;
305			char nextcp, *av;
306
307			if ((fslist == NULL) \|\| (fslist[0] == '\0'))
308			errx(1, "empty type list");
309
310			/*
311			* XXX
312			* Note: the syntax is "noxxx,yyy" for no xxx's and
313			* no yyy's, not the more intuitive "noxxx,noyyy".
314			*/
315			if (fslist[0] == 'n' && fslist[1] == 'o') {
316			fslist += 2;
317			which = NOT_IN_LIST;
318			} else
319			which = IN_LIST;
320
321			/* Count the number of types. */
322			for (i = 1, nextcp = fslist; (nextcp = strchr(nextcp, ',')); i++)
323			++nextcp;
324
325			/* Build an array of that many types. */
326			if ((av = typelist = calloc(i + 1, sizeof(char *))) == NULL)
327			err(1, NULL);
328			av[0] = fslist;
329			for (i = 1, nextcp = fslist; (nextcp = strchr(nextcp, ',')); i++) {
330			*nextcp = '\0';
331			av[i] = ++nextcp;
332			}
333			/* Terminate the array. */
334			av[i] = NULL;
335			}
336
337			int
338			namematch(struct hostent *hp)
339			{
340			char cp, *np;
341
342			if ((hp == NULL) \|\| (nfshost == NULL))
343			return (1);
344
345			if (strcasecmp(nfshost, hp->h_name) == 0)
346			return (1);
347
348			if ((cp = strchr(hp->h_name, '.')) != NULL) {
349			*cp = '\0';
350			if (strcasecmp(nfshost, hp->h_name) == 0)
351			return (1);
352			}
353			for (np = hp->h_aliases; *np; np++) {
354			if (strcasecmp(nfshost, *np) == 0)
355			return (1);
356			if ((cp = strchr(*np, '.')) != NULL) {
357			*cp = '\0';
358			if (strcasecmp(nfshost, *np) == 0)
359			return (1);
360			}
361			}
362			return (0);
363			}
364
365			#ifndef NO_NFS
366			/*
367			* xdr routines for mount rpc's
368			*/
369			int
370			xdr_dir(XDR xdrsp, char dirp)
371			{
372			return (xdr_string(xdrsp, &dirp, RPCMNT_PATHLEN));
373			}
374			#endif
375
376			void
377			usage(void)
378			{
379			fprintf(stderr,
380			"usage: %s\n %s\n",
381			"umount [-fv] special \| node",
382			"umount -a [-fv] [-h host] [-t type]");
383			exit(1);
384			}