Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	sbin/nfsd/nfsd.c	Lines:	0	151	0.0 %
Date:	2017-11-07	Branches:	0	91	0.0 %


/*	$OpenBSD: nfsd.c,v 1.37 2017/08/31 06:50:56 mestre Exp $	*/
/*	$NetBSD: nfsd.c,v 1.19 1996/02/18 23:18:56 mycroft Exp $	*/

/*
 * Copyright (c) 1989, 1993, 1994
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Rick Macklem at The University of Guelph.
 *
 * 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/ioctl.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <sys/uio.h>
#include <sys/ucred.h>
#include <sys/mount.h>
#include <sys/socket.h>
#include <sys/socketvar.h>

#include <rpc/rpc.h>
#include <rpc/pmap_clnt.h>
#include <rpc/pmap_prot.h>

#include <nfs/rpcv2.h>
#include <nfs/nfsproto.h>
#include <nfs/nfs.h>

#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <grp.h>
#include <pwd.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <syslog.h>
#include <unistd.h>

/* Global defs */
#ifdef DEBUG
#define	syslog(e, s, ...)			\
do {						\
	fprintf(stderr, (s), ##__VA_ARGS__);	\
	fprintf(stderr, "\n");			\
} while (0)
int	debug = 1;
#else
int	debug = 0;
#endif

struct	nfsd_srvargs nsd;

void	nonfs(int);
void	reapchild(int);
void	usage(void);

#define	MAXNFSDCNT	20
#define	DEFNFSDCNT	 4

/*
 * Nfs server daemon mostly just a user context for nfssvc()
 *
 * 1 - do file descriptor and signal cleanup
 * 2 - fork the nfsd(s)
 * 3 - create server socket(s)
 * 4 - register socket with portmap
 *
 * For connectionless protocols, just pass the socket into the kernel via.
 * nfssvc().
 * For connection based sockets, loop doing accepts. When you get a new
 * socket from accept, pass the msgsock into the kernel via. nfssvc().
 * The arguments are:
 *	-r - reregister with portmapper
 *	-t - support tcp nfs clients
 *	-u - support udp nfs clients
 * followed by "n" which is the number of nfsds' to fork off
 */
int
main(int argc, char *argv[])
{
	struct nfsd_args nfsdargs;
	struct sockaddr_in inetaddr;
	int ch, connect_type_cnt, i;
	int nfsdcnt = DEFNFSDCNT, on, reregister = 0, sock;
	int udpflag = 0, tcpflag = 0, tcpsock;
	const char *errstr = NULL;

	/* Start by writing to both console and log. */
	openlog("nfsd", LOG_PID | LOG_PERROR, LOG_DAEMON);

	if (argc == 1)
		udpflag = 1;
	while ((ch = getopt(argc, argv, "n:rtu")) != -1)
		switch (ch) {
		case 'n':
			nfsdcnt = strtonum(optarg, 1, MAXNFSDCNT, &errstr);
			if (errstr) {
				syslog(LOG_ERR, "nfsd count is %s: %s", errstr, optarg);
				return(1);
			}
			break;
		case 'r':
			reregister = 1;
			break;
		case 't':
			tcpflag = 1;
			break;
		case 'u':
			udpflag = 1;
			break;
		default:
			usage();
		};
	argv += optind;
	argc -= optind;

	/*
	 * XXX
	 * Backward compatibility, trailing number is the count of daemons.
	 */
	if (argc > 1)
		usage();
	if (argc == 1) {
		nfsdcnt = strtonum(argv[0], 1, MAXNFSDCNT, &errstr);
		if (errstr) {
			syslog(LOG_ERR, "nfsd count is %s: %s", errstr, optarg);
			return(1);
		}
	}

	if (debug == 0) {
		daemon(0, 0);
		(void)signal(SIGHUP, SIG_IGN);
		(void)signal(SIGINT, SIG_IGN);
		(void)signal(SIGQUIT, SIG_IGN);
		(void)signal(SIGSYS, nonfs);
	}
	(void)signal(SIGCHLD, reapchild);

	if (reregister) {
		if (udpflag &&
		    (!pmap_set(RPCPROG_NFS, 2, IPPROTO_UDP, NFS_PORT) ||
		     !pmap_set(RPCPROG_NFS, 3, IPPROTO_UDP, NFS_PORT))) {
			syslog(LOG_ERR, "can't register with portmap for UDP (%s).",
			    strerror(errno));
			return (1);
		}
		if (tcpflag &&
		    (!pmap_set(RPCPROG_NFS, 2, IPPROTO_TCP, NFS_PORT) ||
		     !pmap_set(RPCPROG_NFS, 3, IPPROTO_TCP, NFS_PORT))) {
			syslog(LOG_ERR, "can't register with portmap for TCP (%s).",
			    strerror(errno));
			return (1);
		}
		return (0);
	}

	/* Cut back to writing to log only. */
	closelog();
	openlog("nfsd", LOG_PID, LOG_DAEMON);

	for (i = 0; i < nfsdcnt; i++) {
		switch (fork()) {
		case -1:
			syslog(LOG_ERR, "fork: %s", strerror(errno));
			return (1);
		case 0:
			break;
		default:
			continue;
		}

		setproctitle("server");
		nsd.nsd_nfsd = NULL;
		if (nfssvc(NFSSVC_NFSD, &nsd) < 0) {
			syslog(LOG_ERR, "nfssvc: %s", strerror(errno));
			return (1);
		}
		return (0);
	}

	/* If we are serving udp, set up the socket. */
	if (udpflag) {
		if ((sock = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
			syslog(LOG_ERR, "can't create udp socket");
			return (1);
		}
		memset(&inetaddr, 0, sizeof inetaddr);
		inetaddr.sin_family = AF_INET;
		inetaddr.sin_addr.s_addr = INADDR_ANY;
		inetaddr.sin_port = htons(NFS_PORT);
		inetaddr.sin_len = sizeof(inetaddr);
		if (bind(sock, (struct sockaddr *)&inetaddr,
		    sizeof(inetaddr)) < 0) {
			syslog(LOG_ERR, "can't bind udp addr");
			return (1);
		}
		if (!pmap_set(RPCPROG_NFS, 2, IPPROTO_UDP, NFS_PORT) ||
		    !pmap_set(RPCPROG_NFS, 3, IPPROTO_UDP, NFS_PORT)) {
			syslog(LOG_ERR, "can't register with udp portmap");
			return (1);
		}
		nfsdargs.sock = sock;
		nfsdargs.name = NULL;
		nfsdargs.namelen = 0;
		if (nfssvc(NFSSVC_ADDSOCK, &nfsdargs) < 0) {
			syslog(LOG_ERR, "can't Add UDP socket");
			return (1);
		}
		(void)close(sock);
	}

	/* Now set up the master server socket waiting for tcp connections. */
	on = 1;
	connect_type_cnt = 0;
	if (tcpflag) {
		if ((tcpsock = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
			syslog(LOG_ERR, "can't create tcp socket");
			return (1);
		}
		if (setsockopt(tcpsock,
		    SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on)) < 0)
			syslog(LOG_ERR, "setsockopt SO_REUSEADDR: %s", strerror(errno));
		memset(&inetaddr, 0, sizeof inetaddr);
		inetaddr.sin_family = AF_INET;
		inetaddr.sin_addr.s_addr = INADDR_ANY;
		inetaddr.sin_port = htons(NFS_PORT);
		inetaddr.sin_len = sizeof(inetaddr);
		if (bind(tcpsock, (struct sockaddr *)&inetaddr,
		    sizeof (inetaddr)) < 0) {
			syslog(LOG_ERR, "can't bind tcp addr");
			return (1);
		}
		if (listen(tcpsock, 5) < 0) {
			syslog(LOG_ERR, "listen failed");
			return (1);
		}
		if (!pmap_set(RPCPROG_NFS, 2, IPPROTO_TCP, NFS_PORT) ||
		    !pmap_set(RPCPROG_NFS, 3, IPPROTO_TCP, NFS_PORT)) {
			syslog(LOG_ERR, "can't register tcp with portmap");
			return (1);
		}
		connect_type_cnt++;
	}

	if (connect_type_cnt == 0)
		return (0);

	setproctitle("master");

	/*
	 * Loop forever accepting connections and passing the sockets
	 * into the kernel for the mounts.
	 */
	for (;;) {
		struct pollfd		pfd;
		struct sockaddr_in	inetpeer;
		int ret, msgsock;
		socklen_t len;

		pfd.fd = tcpsock;
		pfd.events = POLLIN;

		if (connect_type_cnt > 1) {
			ret = poll(&pfd, 1, INFTIM);
			if (ret < 1) {
				syslog(LOG_ERR, "poll failed: %s", strerror(errno));
				return (1);
			}

		}

		if (tcpflag) {
			len = sizeof(inetpeer);
			if ((msgsock = accept(tcpsock,
			    (struct sockaddr *)&inetpeer, &len)) < 0) {
				if (errno == EWOULDBLOCK || errno == EINTR ||
				    errno == ECONNABORTED)
					continue;
				syslog(LOG_ERR, "accept failed: %s", strerror(errno));
				return (1);
			}
			memset(inetpeer.sin_zero, 0, sizeof(inetpeer.sin_zero));
			if (setsockopt(msgsock, SOL_SOCKET,
			    SO_KEEPALIVE, &on, sizeof(on)) < 0)
				syslog(LOG_ERR,
				    "setsockopt SO_KEEPALIVE: %s", strerror(errno));
			nfsdargs.sock = msgsock;
			nfsdargs.name = (caddr_t)&inetpeer;
			nfsdargs.namelen = sizeof(inetpeer);
			if (nfssvc(NFSSVC_ADDSOCK, &nfsdargs) < 0) {
				syslog(LOG_ERR, "can't Add TCP socket");
				return (1);
			}
			(void)close(msgsock);
		}
	}
}

void
usage(void)
{
	(void)fprintf(stderr, "usage: nfsd [-rtu] [-n num_servers]\n");
	exit(1);
}

/* ARGSUSED */
void
nonfs(int signo)
{
	int save_errno = errno;
	struct syslog_data sdata = SYSLOG_DATA_INIT;

	syslog_r(LOG_ERR, &sdata, "missing system call: NFS not available.");
	errno = save_errno;
}

/* ARGSUSED */
void
reapchild(int signo)
{
	int save_errno = errno;

	while (wait3(NULL, WNOHANG, NULL) > 0)
		continue;
	errno = save_errno;
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: nfsd.c,v 1.37 2017/08/31 06:50:56 mestre Exp $ */
2			/* $NetBSD: nfsd.c,v 1.19 1996/02/18 23:18:56 mycroft Exp $ */
3
4			/*
5			* Copyright (c) 1989, 1993, 1994
6			* The Regents of the University of California. All rights reserved.
7			*
8			* This code is derived from software contributed to Berkeley by
9			* Rick Macklem at The University of Guelph.
10			*
11			* Redistribution and use in source and binary forms, with or without
12			* modification, are permitted provided that the following conditions
13			* are met:
14			* 1. Redistributions of source code must retain the above copyright
15			* notice, this list of conditions and the following disclaimer.
16			* 2. Redistributions in binary form must reproduce the above copyright
17			* notice, this list of conditions and the following disclaimer in the
18			* documentation and/or other materials provided with the distribution.
19			* 3. Neither the name of the University nor the names of its contributors
20			* may be used to endorse or promote products derived from this software
21			* without specific prior written permission.
22			*
23			* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24			* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25			* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26			* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27			* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28			* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29			* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30			* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31			* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32			* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33			* SUCH DAMAGE.
34			*/
35
36			#include <sys/ioctl.h>
37			#include <sys/stat.h>
38			#include <sys/wait.h>
39			#include <sys/uio.h>
40			#include <sys/ucred.h>
41			#include <sys/mount.h>
42			#include <sys/socket.h>
43			#include <sys/socketvar.h>
44
45			#include <rpc/rpc.h>
46			#include <rpc/pmap_clnt.h>
47			#include <rpc/pmap_prot.h>
48
49			#include <nfs/rpcv2.h>
50			#include <nfs/nfsproto.h>
51			#include <nfs/nfs.h>
52
53			#include <err.h>
54			#include <errno.h>
55			#include <fcntl.h>
56			#include <grp.h>
57			#include <pwd.h>
58			#include <signal.h>
59			#include <stdio.h>
60			#include <stdlib.h>
61			#include <string.h>
62			#include <syslog.h>
63			#include <unistd.h>
64
65			/* Global defs */
66			#ifdef DEBUG
67			#define syslog(e, s, ...) \
68			do { \
69			fprintf(stderr, (s), ##__VA_ARGS__); \
70			fprintf(stderr, "\n"); \
71			} while (0)
72			int debug = 1;
73			#else
74			int debug = 0;
75			#endif
76
77			struct nfsd_srvargs nsd;
78
79			void nonfs(int);
80			void reapchild(int);
81			void usage(void);
82
83			#define MAXNFSDCNT 20
84			#define DEFNFSDCNT 4
85
86			/*
87			* Nfs server daemon mostly just a user context for nfssvc()
88			*
89			* 1 - do file descriptor and signal cleanup
90			* 2 - fork the nfsd(s)
91			* 3 - create server socket(s)
92			* 4 - register socket with portmap
93			*
94			* For connectionless protocols, just pass the socket into the kernel via.
95			* nfssvc().
96			* For connection based sockets, loop doing accepts. When you get a new
97			* socket from accept, pass the msgsock into the kernel via. nfssvc().
98			* The arguments are:
99			* -r - reregister with portmapper
100			* -t - support tcp nfs clients
101			* -u - support udp nfs clients
102			* followed by "n" which is the number of nfsds' to fork off
103			*/
104			int
105			main(int argc, char *argv[])
106			{
107			struct nfsd_args nfsdargs;
108			struct sockaddr_in inetaddr;
109			int ch, connect_type_cnt, i;
110			int nfsdcnt = DEFNFSDCNT, on, reregister = 0, sock;
111			int udpflag = 0, tcpflag = 0, tcpsock;
112			const char *errstr = NULL;
113
114			/* Start by writing to both console and log. */
115			openlog("nfsd", LOG_PID \| LOG_PERROR, LOG_DAEMON);
116
117			if (argc == 1)
118			udpflag = 1;
119			while ((ch = getopt(argc, argv, "n:rtu")) != -1)
120			switch (ch) {
121			case 'n':
122			nfsdcnt = strtonum(optarg, 1, MAXNFSDCNT, &errstr);
123			if (errstr) {
124			syslog(LOG_ERR, "nfsd count is %s: %s", errstr, optarg);
125			return(1);
126			}
127			break;
128			case 'r':
129			reregister = 1;
130			break;
131			case 't':
132			tcpflag = 1;
133			break;
134			case 'u':
135			udpflag = 1;
136			break;
137			default:
138			usage();
139			};
140			argv += optind;
141			argc -= optind;
142
143			/*
144			* XXX
145			* Backward compatibility, trailing number is the count of daemons.
146			*/
147			if (argc > 1)
148			usage();
149			if (argc == 1) {
150			nfsdcnt = strtonum(argv[0], 1, MAXNFSDCNT, &errstr);
151			if (errstr) {
152			syslog(LOG_ERR, "nfsd count is %s: %s", errstr, optarg);
153			return(1);
154			}
155			}
156
157			if (debug == 0) {
158			daemon(0, 0);
159			(void)signal(SIGHUP, SIG_IGN);
160			(void)signal(SIGINT, SIG_IGN);
161			(void)signal(SIGQUIT, SIG_IGN);
162			(void)signal(SIGSYS, nonfs);
163			}
164			(void)signal(SIGCHLD, reapchild);
165
166			if (reregister) {
167			if (udpflag &&
168			(!pmap_set(RPCPROG_NFS, 2, IPPROTO_UDP, NFS_PORT) \|\|
169			!pmap_set(RPCPROG_NFS, 3, IPPROTO_UDP, NFS_PORT))) {
170			syslog(LOG_ERR, "can't register with portmap for UDP (%s).",
171			strerror(errno));
172			return (1);
173			}
174			if (tcpflag &&
175			(!pmap_set(RPCPROG_NFS, 2, IPPROTO_TCP, NFS_PORT) \|\|
176			!pmap_set(RPCPROG_NFS, 3, IPPROTO_TCP, NFS_PORT))) {
177			syslog(LOG_ERR, "can't register with portmap for TCP (%s).",
178			strerror(errno));
179			return (1);
180			}
181			return (0);
182			}
183
184			/* Cut back to writing to log only. */
185			closelog();
186			openlog("nfsd", LOG_PID, LOG_DAEMON);
187
188			for (i = 0; i < nfsdcnt; i++) {
189			switch (fork()) {
190			case -1:
191			syslog(LOG_ERR, "fork: %s", strerror(errno));
192			return (1);
193			case 0:
194			break;
195			default:
196			continue;
197			}
198
199			setproctitle("server");
200			nsd.nsd_nfsd = NULL;
201			if (nfssvc(NFSSVC_NFSD, &nsd) < 0) {
202			syslog(LOG_ERR, "nfssvc: %s", strerror(errno));
203			return (1);
204			}
205			return (0);
206			}
207
208			/* If we are serving udp, set up the socket. */
209			if (udpflag) {
210			if ((sock = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
211			syslog(LOG_ERR, "can't create udp socket");
212			return (1);
213			}
214			memset(&inetaddr, 0, sizeof inetaddr);
215			inetaddr.sin_family = AF_INET;
216			inetaddr.sin_addr.s_addr = INADDR_ANY;
217			inetaddr.sin_port = htons(NFS_PORT);
218			inetaddr.sin_len = sizeof(inetaddr);
219			if (bind(sock, (struct sockaddr *)&inetaddr,
220			sizeof(inetaddr)) < 0) {
221			syslog(LOG_ERR, "can't bind udp addr");
222			return (1);
223			}
224			if (!pmap_set(RPCPROG_NFS, 2, IPPROTO_UDP, NFS_PORT) \|\|
225			!pmap_set(RPCPROG_NFS, 3, IPPROTO_UDP, NFS_PORT)) {
226			syslog(LOG_ERR, "can't register with udp portmap");
227			return (1);
228			}
229			nfsdargs.sock = sock;
230			nfsdargs.name = NULL;
231			nfsdargs.namelen = 0;
232			if (nfssvc(NFSSVC_ADDSOCK, &nfsdargs) < 0) {
233			syslog(LOG_ERR, "can't Add UDP socket");
234			return (1);
235			}
236			(void)close(sock);
237			}
238
239			/* Now set up the master server socket waiting for tcp connections. */
240			on = 1;
241			connect_type_cnt = 0;
242			if (tcpflag) {
243			if ((tcpsock = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
244			syslog(LOG_ERR, "can't create tcp socket");
245			return (1);
246			}
247			if (setsockopt(tcpsock,
248			SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on)) < 0)
249			syslog(LOG_ERR, "setsockopt SO_REUSEADDR: %s", strerror(errno));
250			memset(&inetaddr, 0, sizeof inetaddr);
251			inetaddr.sin_family = AF_INET;
252			inetaddr.sin_addr.s_addr = INADDR_ANY;
253			inetaddr.sin_port = htons(NFS_PORT);
254			inetaddr.sin_len = sizeof(inetaddr);
255			if (bind(tcpsock, (struct sockaddr *)&inetaddr,
256			sizeof (inetaddr)) < 0) {
257			syslog(LOG_ERR, "can't bind tcp addr");
258			return (1);
259			}
260			if (listen(tcpsock, 5) < 0) {
261			syslog(LOG_ERR, "listen failed");
262			return (1);
263			}
264			if (!pmap_set(RPCPROG_NFS, 2, IPPROTO_TCP, NFS_PORT) \|\|
265			!pmap_set(RPCPROG_NFS, 3, IPPROTO_TCP, NFS_PORT)) {
266			syslog(LOG_ERR, "can't register tcp with portmap");
267			return (1);
268			}
269			connect_type_cnt++;
270			}
271
272			if (connect_type_cnt == 0)
273			return (0);
274
275			setproctitle("master");
276
277			/*
278			* Loop forever accepting connections and passing the sockets
279			* into the kernel for the mounts.
280			*/
281			for (;;) {
282			struct pollfd pfd;
283			struct sockaddr_in inetpeer;
284			int ret, msgsock;
285			socklen_t len;
286
287			pfd.fd = tcpsock;
288			pfd.events = POLLIN;
289
290			if (connect_type_cnt > 1) {
291			ret = poll(&pfd, 1, INFTIM);
292			if (ret < 1) {
293			syslog(LOG_ERR, "poll failed: %s", strerror(errno));
294			return (1);
295			}
296
297			}
298
299			if (tcpflag) {
300			len = sizeof(inetpeer);
301			if ((msgsock = accept(tcpsock,
302			(struct sockaddr *)&inetpeer, &len)) < 0) {
303			if (errno == EWOULDBLOCK \|\| errno == EINTR \|\|
304			errno == ECONNABORTED)
305			continue;
306			syslog(LOG_ERR, "accept failed: %s", strerror(errno));
307			return (1);
308			}
309			memset(inetpeer.sin_zero, 0, sizeof(inetpeer.sin_zero));
310			if (setsockopt(msgsock, SOL_SOCKET,
311			SO_KEEPALIVE, &on, sizeof(on)) < 0)
312			syslog(LOG_ERR,
313			"setsockopt SO_KEEPALIVE: %s", strerror(errno));
314			nfsdargs.sock = msgsock;
315			nfsdargs.name = (caddr_t)&inetpeer;
316			nfsdargs.namelen = sizeof(inetpeer);
317			if (nfssvc(NFSSVC_ADDSOCK, &nfsdargs) < 0) {
318			syslog(LOG_ERR, "can't Add TCP socket");
319			return (1);
320			}
321			(void)close(msgsock);
322			}
323			}
324			}
325
326			void
327			usage(void)
328			{
329			(void)fprintf(stderr, "usage: nfsd [-rtu] [-n num_servers]\n");
330			exit(1);
331			}
332
333			/* ARGSUSED */
334			void
335			nonfs(int signo)
336			{
337			int save_errno = errno;
338			struct syslog_data sdata = SYSLOG_DATA_INIT;
339
340			syslog_r(LOG_ERR, &sdata, "missing system call: NFS not available.");
341			errno = save_errno;
342			}
343
344			/* ARGSUSED */
345			void
346			reapchild(int signo)
347			{
348			int save_errno = errno;
349
350			while (wait3(NULL, WNOHANG, NULL) > 0)
351			continue;
352			errno = save_errno;
353			}