lockd.c revision 320217 
1/*	$NetBSD: lockd.c,v 1.7 2000/08/12 18:08:44 thorpej Exp $	*/
2/*	$FreeBSD: stable/11/usr.sbin/rpc.lockd/lockd.c 320217 2017-06-22 05:22:21Z delphij $ */
3
4/*
5 * Copyright (c) 1995
6 *	A.R. Gordon (andrew.gordon@net-tel.co.uk).  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. All advertising materials mentioning features or use of this software
17 *    must display the following acknowledgement:
18 *	This product includes software developed for the FreeBSD project
19 * 4. Neither the name of the author nor the names of any co-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 ANDREW GORDON 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 AUTHOR 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
37#include <sys/cdefs.h>
38#ifndef lint
39__RCSID("$NetBSD: lockd.c,v 1.7 2000/08/12 18:08:44 thorpej Exp $");
40#endif
41
42/*
43 * main() function for NFS lock daemon.  Most of the code in this
44 * file was generated by running rpcgen /usr/include/rpcsvc/nlm_prot.x.
45 *
46 * The actual program logic is in the file lock_proc.c
47 */
48
49#include <sys/param.h>
50#include <sys/linker.h>
51#include <sys/module.h>
52#include <sys/socket.h>
53#include <sys/stat.h>
54
55#include <netinet/in.h>
56#include <arpa/inet.h>
57
58#include <err.h>
59#include <stdio.h>
60#include <stdlib.h>
61#include <errno.h>
62#include <syslog.h>
63#include <signal.h>
64#include <string.h>
65#include <unistd.h>
66#include <libutil.h>
67#include <netconfig.h>
68#include <netdb.h>
69
70#include <rpc/rpc.h>
71#include <rpc/rpc_com.h>
72#include <rpcsvc/sm_inter.h>
73
74#include "lockd.h"
75#include <rpcsvc/nlm_prot.h>
76
77#define	GETPORT_MAXTRY	20	/* Max tries to get a port # */
78
79int		debug_level = 0;	/* 0 = no debugging syslog() calls */
80int		_rpcsvcdirty = 0;
81
82int grace_expired;
83int nsm_state;
84int kernel_lockd;
85int kernel_lockd_client;
86pid_t client_pid;
87struct mon mon_host;
88char **hosts, *svcport_str = NULL;
89static int	mallocd_svcport = 0;
90static int	*sock_fd;
91static int	sock_fdcnt;
92static int	sock_fdpos;
93int nhosts = 0;
94int xcreated = 0;
95char **addrs;			/* actually (netid, uaddr) pairs */
96int naddrs;			/* count of how many (netid, uaddr) pairs */
97char localhost[] = "localhost";
98
99static int	create_service(struct netconfig *nconf);
100static void	complete_service(struct netconfig *nconf, char *port_str);
101static void	clearout_service(void);
102static void	out_of_mem(void) __dead2;
103void	init_nsm(void);
104void	usage(void);
105
106void sigalarm_handler(void);
107
108/*
109 * XXX move to some header file.
110 */
111#define _PATH_RPCLOCKDSOCK	"/var/run/rpclockd.sock"
112
113int
114main(int argc, char **argv)
115{
116	int ch, i, s;
117	void *nc_handle;
118	char *endptr, **hosts_bak;
119	struct sigaction sigalarm;
120	int grace_period = 30;
121	struct netconfig *nconf;
122	int have_v6 = 1;
123	int maxrec = RPC_MAXDATASIZE;
124	in_port_t svcport = 0;
125	int attempt_cnt, port_len, port_pos, ret;
126	char **port_list;
127
128	while ((ch = getopt(argc, argv, "d:g:h:p:")) != (-1)) {
129		switch (ch) {
130		case 'd':
131			debug_level = atoi(optarg);
132			if (!debug_level) {
133				usage();
134				/* NOTREACHED */
135			}
136			break;
137		case 'g':
138			grace_period = atoi(optarg);
139			if (!grace_period) {
140				usage();
141				/* NOTREACHED */
142			}
143			break;
144		case 'h':
145			++nhosts;
146			hosts_bak = realloc(hosts, nhosts * sizeof(char *));
147			if (hosts_bak == NULL) {
148				if (hosts != NULL) {
149					for (i = 0; i < nhosts; i++)
150						free(hosts[i]);
151					free(hosts);
152					out_of_mem();
153				}
154			}
155			hosts = hosts_bak;
156			hosts[nhosts - 1] = strdup(optarg);
157			if (hosts[nhosts - 1] == NULL) {
158				for (i = 0; i < (nhosts - 1); i++)
159					free(hosts[i]);
160				free(hosts);
161				out_of_mem();
162			}
163			break;
164		case 'p':
165			endptr = NULL;
166			svcport = (in_port_t)strtoul(optarg, &endptr, 10);
167			if (endptr == NULL || *endptr != '\0' ||
168			    svcport == 0 || svcport >= IPPORT_MAX)
169				usage();
170			svcport_str = strdup(optarg);
171			break;
172		default:
173			usage();
174			/* NOTREACHED */
175		}
176	}
177	if (geteuid()) { /* This command allowed only to root */
178		fprintf(stderr, "Sorry. You are not superuser\n");
179		exit(1);
180        }
181
182	kernel_lockd = FALSE;
183	kernel_lockd_client = FALSE;
184	if (modfind("nfslockd") < 0) {
185		if (kldload("nfslockd") < 0) {
186			fprintf(stderr, "Can't find or load kernel support for rpc.lockd - using non-kernel implementation\n");
187		} else {
188			kernel_lockd = TRUE;
189		}
190	} else {
191		kernel_lockd = TRUE;
192	}
193	if (kernel_lockd) {
194		if (getosreldate() >= 800040)
195			kernel_lockd_client = TRUE;
196	}
197
198	(void)rpcb_unset(NLM_PROG, NLM_SM, NULL);
199	(void)rpcb_unset(NLM_PROG, NLM_VERS, NULL);
200	(void)rpcb_unset(NLM_PROG, NLM_VERSX, NULL);
201	(void)rpcb_unset(NLM_PROG, NLM_VERS4, NULL);
202
203	/*
204	 * Check if IPv6 support is present.
205	 */
206	s = socket(AF_INET6, SOCK_DGRAM, IPPROTO_UDP);
207	if (s < 0)
208		have_v6 = 0;
209	else
210		close(s);
211
212	rpc_control(RPC_SVC_CONNMAXREC_SET, &maxrec);
213
214	/*
215	 * If no hosts were specified, add a wildcard entry to bind to
216	 * INADDR_ANY. Otherwise make sure 127.0.0.1 and ::1 are added to the
217	 * list.
218	 */
219	if (nhosts == 0) {
220		hosts = malloc(sizeof(char *));
221		if (hosts == NULL)
222			out_of_mem();
223
224		hosts[0] = strdup("*");
225		nhosts = 1;
226	} else {
227		if (have_v6) {
228			hosts_bak = realloc(hosts, (nhosts + 2) *
229			    sizeof(char *));
230			if (hosts_bak == NULL) {
231				for (i = 0; i < nhosts; i++)
232					free(hosts[i]);
233				free(hosts);
234				out_of_mem();
235			} else
236				hosts = hosts_bak;
237
238			nhosts += 2;
239			hosts[nhosts - 2] = strdup("::1");
240		} else {
241			hosts_bak = realloc(hosts, (nhosts + 1) * sizeof(char *));
242			if (hosts_bak == NULL) {
243				for (i = 0; i < nhosts; i++)
244					free(hosts[i]);
245
246				free(hosts);
247				out_of_mem();
248			} else {
249				nhosts += 1;
250				hosts = hosts_bak;
251			}
252		}
253		hosts[nhosts - 1] = strdup("127.0.0.1");
254	}
255
256	if (kernel_lockd) {
257		if (!kernel_lockd_client) {
258			/*
259			 * For the case where we have a kernel lockd but it
260			 * doesn't provide client locking, we run a cut-down
261			 * RPC service on a local-domain socket. The kernel's
262			 * RPC server will pass what it can't handle (mainly
263			 * client replies) down to us.
264			 */
265			struct sockaddr_un sun;
266			int fd, oldmask;
267			SVCXPRT *xprt;
268
269			memset(&sun, 0, sizeof sun);
270			sun.sun_family = AF_LOCAL;
271			unlink(_PATH_RPCLOCKDSOCK);
272			strcpy(sun.sun_path, _PATH_RPCLOCKDSOCK);
273			sun.sun_len = SUN_LEN(&sun);
274			fd = socket(AF_LOCAL, SOCK_STREAM, 0);
275			if (!fd) {
276				err(1, "Can't create local lockd socket");
277			}
278			oldmask = umask(S_IXUSR|S_IRWXG|S_IRWXO);
279			if (bind(fd, (struct sockaddr *) &sun, sun.sun_len) < 0) {
280				err(1, "Can't bind local lockd socket");
281			}
282			umask(oldmask);
283			if (listen(fd, SOMAXCONN) < 0) {
284				err(1, "Can't listen on local lockd socket");
285			}
286			xprt = svc_vc_create(fd, RPC_MAXDATASIZE, RPC_MAXDATASIZE);
287			if (!xprt) {
288				err(1, "Can't create transport for local lockd socket");
289			}
290			if (!svc_reg(xprt, NLM_PROG, NLM_VERS4, nlm_prog_4, NULL)) {
291				err(1, "Can't register service for local lockd socket");
292			}
293		}
294
295		/*
296		 * We need to look up the addresses so that we can
297		 * hand uaddrs (ascii encoded address+port strings) to
298		 * the kernel.
299		 */
300		nc_handle = setnetconfig();
301		while ((nconf = getnetconfig(nc_handle))) {
302			/* We want to listen only on udp6, tcp6, udp, tcp transports */
303			if (nconf->nc_flag & NC_VISIBLE) {
304				/* Skip if there's no IPv6 support */
305				if (have_v6 == 0 && strcmp(nconf->nc_protofmly, "inet6") == 0) {
306					/* DO NOTHING */
307				} else {
308					create_service(nconf);
309				}
310			}
311		}
312		endnetconfig(nc_handle);
313	} else {
314		attempt_cnt = 1;
315		sock_fdcnt = 0;
316		sock_fd = NULL;
317		port_list = NULL;
318		port_len = 0;
319		nc_handle = setnetconfig();
320		while ((nconf = getnetconfig(nc_handle))) {
321			/* We want to listen only on udp6, tcp6, udp, tcp transports */
322			if (nconf->nc_flag & NC_VISIBLE) {
323				/* Skip if there's no IPv6 support */
324				if (have_v6 == 0 && strcmp(nconf->nc_protofmly, "inet6") == 0) {
325					/* DO NOTHING */
326				} else {
327					ret = create_service(nconf);
328					if (ret == 1)
329						/* Ignore this call */
330						continue;
331					if (ret < 0) {
332						/*
333						 * Failed to bind port, so close
334						 * off all sockets created and
335						 * try again if the port# was
336						 * dynamically assigned via
337						 * bind(2).
338						 */
339						clearout_service();
340						if (mallocd_svcport != 0 &&
341						    attempt_cnt <
342						    GETPORT_MAXTRY) {
343							free(svcport_str);
344							svcport_str = NULL;
345							mallocd_svcport = 0;
346						} else {
347							errno = EADDRINUSE;
348							syslog(LOG_ERR,
349							 "bindresvport_sa: %m");
350							exit(1);
351						}
352
353						/*
354						 * Start over at the first
355						 * service.
356						 */
357						free(sock_fd);
358						sock_fdcnt = 0;
359						sock_fd = NULL;
360						nc_handle = setnetconfig();
361						attempt_cnt++;
362					} else if (mallocd_svcport != 0 &&
363					    attempt_cnt == GETPORT_MAXTRY) {
364						/*
365						 * For the last attempt, allow
366						 * different port #s for each
367						 * nconf by saving the
368						 * svcport_str and setting it
369						 * back to NULL.
370						 */
371						port_list = realloc(port_list,
372						    (port_len + 1) *
373						    sizeof(char *));
374						if (port_list == NULL)
375							out_of_mem();
376						port_list[port_len++] =
377						    svcport_str;
378						svcport_str = NULL;
379						mallocd_svcport = 0;
380					}
381				}
382			}
383		}
384
385		/*
386		 * Successfully bound the ports, so call complete_service() to
387		 * do the rest of the setup on the service(s).
388		 */
389		sock_fdpos = 0;
390		port_pos = 0;
391		nc_handle = setnetconfig();
392		while ((nconf = getnetconfig(nc_handle))) {
393			/* We want to listen only on udp6, tcp6, udp, tcp transports */
394			if (nconf->nc_flag & NC_VISIBLE) {
395				/* Skip if there's no IPv6 support */
396				if (have_v6 == 0 && strcmp(nconf->nc_protofmly, "inet6") == 0) {
397					/* DO NOTHING */
398				} else if (port_list != NULL) {
399					if (port_pos >= port_len) {
400						syslog(LOG_ERR,
401						    "too many port#s");
402						exit(1);
403					}
404					complete_service(nconf,
405					    port_list[port_pos++]);
406				} else
407					complete_service(nconf, svcport_str);
408			}
409		}
410		endnetconfig(nc_handle);
411		free(sock_fd);
412		if (port_list != NULL) {
413			for (port_pos = 0; port_pos < port_len; port_pos++)
414				free(port_list[port_pos]);
415			free(port_list);
416		}
417	}
418
419	/*
420	 * Note that it is NOT sensible to run this program from inetd - the
421	 * protocol assumes that it will run immediately at boot time.
422	 */
423	if (daemon(0, debug_level > 0)) {
424		err(1, "cannot fork");
425		/* NOTREACHED */
426	}
427
428	openlog("rpc.lockd", 0, LOG_DAEMON);
429	if (debug_level)
430		syslog(LOG_INFO, "Starting, debug level %d", debug_level);
431	else
432		syslog(LOG_INFO, "Starting");
433
434	sigalarm.sa_handler = (sig_t) sigalarm_handler;
435	sigemptyset(&sigalarm.sa_mask);
436	sigalarm.sa_flags = SA_RESETHAND; /* should only happen once */
437	sigalarm.sa_flags |= SA_RESTART;
438	if (sigaction(SIGALRM, &sigalarm, NULL) != 0) {
439		syslog(LOG_WARNING, "sigaction(SIGALRM) failed: %s",
440		    strerror(errno));
441		exit(1);
442	}
443
444	if (kernel_lockd) {
445		if (!kernel_lockd_client) {
446			init_nsm();
447			client_pid = client_request();
448
449			/*
450			 * Create a child process to enter the kernel and then
451			 * wait for RPCs on our local domain socket.
452			 */
453			if (!fork())
454				nlm_syscall(debug_level, grace_period,
455				    naddrs, addrs);
456			else
457				svc_run();
458		} else {
459			/*
460			 * The kernel lockd implementation provides
461			 * both client and server so we don't need to
462			 * do anything else.
463			 */
464			nlm_syscall(debug_level, grace_period, naddrs, addrs);
465		}
466	} else {
467		grace_expired = 0;
468		alarm(grace_period);
469
470		init_nsm();
471
472		client_pid = client_request();
473
474		svc_run();		/* Should never return */
475	}
476	exit(1);
477}
478
479/*
480 * This routine creates and binds sockets on the appropriate
481 * addresses if lockd for user NLM, or perform a lookup of
482 * addresses for the kernel to create transports.
483 *
484 * It gets called one time for each transport.
485 *
486 * It returns 0 upon success, 1 for ingore the call and -1 to indicate
487 * bind failed with EADDRINUSE.
488 *
489 * Any file descriptors that have been created are stored in sock_fd and
490 * the total count of them is maintained in sock_fdcnt.
491 */
492static int
493create_service(struct netconfig *nconf)
494{
495	struct addrinfo hints, *res = NULL;
496	struct sockaddr_in *sin;
497	struct sockaddr_in6 *sin6;
498	struct __rpc_sockinfo si;
499	int aicode;
500	int fd;
501	int nhostsbak;
502	int r;
503	u_int32_t host_addr[4];  /* IPv4 or IPv6 */
504	int mallocd_res;
505
506	if ((nconf->nc_semantics != NC_TPI_CLTS) &&
507	    (nconf->nc_semantics != NC_TPI_COTS) &&
508	    (nconf->nc_semantics != NC_TPI_COTS_ORD))
509		return (1);	/* not my type */
510
511	/*
512	 * XXX - using RPC library internal functions.
513	 */
514	if (!__rpc_nconf2sockinfo(nconf, &si)) {
515		syslog(LOG_ERR, "cannot get information for %s",
516		    nconf->nc_netid);
517		return (1);
518	}
519
520	/* Get rpc.statd's address on this transport */
521	memset(&hints, 0, sizeof hints);
522	hints.ai_family = si.si_af;
523	hints.ai_socktype = si.si_socktype;
524	hints.ai_protocol = si.si_proto;
525
526	/*
527	 * Bind to specific IPs if asked to
528	 */
529	nhostsbak = nhosts;
530	while (nhostsbak > 0) {
531		--nhostsbak;
532		mallocd_res = 0;
533		hints.ai_flags = AI_PASSIVE;
534
535		if (!kernel_lockd) {
536			sock_fd = realloc(sock_fd, (sock_fdcnt + 1) * sizeof(int));
537			if (sock_fd == NULL)
538				out_of_mem();
539			sock_fd[sock_fdcnt++] = -1;	/* Set invalid for now. */
540
541			/*
542			* XXX - using RPC library internal functions.
543			*/
544			if ((fd = __rpc_nconf2fd(nconf)) < 0) {
545				syslog(LOG_ERR, "cannot create socket for %s",
546					nconf->nc_netid);
547				continue;
548			}
549		}
550
551		switch (hints.ai_family) {
552			case AF_INET:
553				if (inet_pton(AF_INET, hosts[nhostsbak],
554				    host_addr) == 1) {
555					hints.ai_flags |= AI_NUMERICHOST;
556				} else {
557					/*
558					 * Skip if we have an AF_INET6 address.
559					 */
560					if (inet_pton(AF_INET6, hosts[nhostsbak],
561					    host_addr) == 1) {
562						if (!kernel_lockd)
563							close(fd);
564						continue;
565					}
566				}
567				break;
568			case AF_INET6:
569				if (inet_pton(AF_INET6, hosts[nhostsbak],
570				    host_addr) == 1) {
571					hints.ai_flags |= AI_NUMERICHOST;
572				} else {
573					/*
574					 * Skip if we have an AF_INET address.
575					 */
576					if (inet_pton(AF_INET, hosts[nhostsbak],
577					    host_addr) == 1) {
578						if (!kernel_lockd)
579							close(fd);
580						continue;
581					}
582				}
583				break;
584			default:
585				break;
586		}
587
588		/*
589		 * If no hosts were specified, just bind to INADDR_ANY
590		 */
591		if (strcmp("*", hosts[nhostsbak]) == 0) {
592			if (svcport_str == NULL) {
593				if ((res = malloc(sizeof(struct addrinfo))) == NULL)
594					out_of_mem();
595				mallocd_res = 1;
596				res->ai_flags = hints.ai_flags;
597				res->ai_family = hints.ai_family;
598				res->ai_protocol = hints.ai_protocol;
599				switch (res->ai_family) {
600					case AF_INET:
601						sin = malloc(sizeof(struct sockaddr_in));
602						if (sin == NULL)
603							out_of_mem();
604						sin->sin_family = AF_INET;
605						sin->sin_port = htons(0);
606						sin->sin_addr.s_addr = htonl(INADDR_ANY);
607						res->ai_addr = (struct sockaddr*) sin;
608						res->ai_addrlen = (socklen_t)
609						    sizeof(struct sockaddr_in);
610						break;
611					case AF_INET6:
612						sin6 = malloc(sizeof(struct sockaddr_in6));
613						if (sin6 == NULL)
614							out_of_mem();
615						sin6->sin6_family = AF_INET6;
616						sin6->sin6_port = htons(0);
617						sin6->sin6_addr = in6addr_any;
618						res->ai_addr = (struct sockaddr*) sin6;
619						res->ai_addrlen = (socklen_t)
620						    sizeof(struct sockaddr_in6);
621						break;
622					default:
623						syslog(LOG_ERR,
624						    "bad address family %d",
625						    res->ai_family);
626						exit(1);
627				}
628			} else {
629				if ((aicode = getaddrinfo(NULL, svcport_str,
630				    &hints, &res)) != 0) {
631					syslog(LOG_ERR,
632					    "cannot get local address for %s: %s",
633					    nconf->nc_netid,
634					    gai_strerror(aicode));
635					if (!kernel_lockd)
636						close(fd);
637					continue;
638				}
639			}
640		} else {
641			if ((aicode = getaddrinfo(hosts[nhostsbak], svcport_str,
642			    &hints, &res)) != 0) {
643				syslog(LOG_ERR,
644				    "cannot get local address for %s: %s",
645				    nconf->nc_netid, gai_strerror(aicode));
646				if (!kernel_lockd)
647					close(fd);
648				continue;
649			}
650		}
651
652		if (kernel_lockd) {
653			struct netbuf servaddr;
654			char *uaddr;
655
656			/*
657			 * Look up addresses for the kernel to create transports for.
658			 */
659			servaddr.len = servaddr.maxlen = res->ai_addrlen;
660			servaddr.buf = res->ai_addr;
661			uaddr = taddr2uaddr(nconf, &servaddr);
662
663			addrs = realloc(addrs, 2 * (naddrs + 1) * sizeof(char *));
664			if (!addrs)
665				out_of_mem();
666			addrs[2 * naddrs] = strdup(nconf->nc_netid);
667			addrs[2 * naddrs + 1] = uaddr;
668			naddrs++;
669		} else {
670			/* Store the fd. */
671			sock_fd[sock_fdcnt - 1] = fd;
672
673			/* Now, attempt the bind. */
674			r = bindresvport_sa(fd, res->ai_addr);
675			if (r != 0) {
676				if (errno == EADDRINUSE && mallocd_svcport != 0) {
677					if (mallocd_res != 0) {
678						free(res->ai_addr);
679						free(res);
680					} else
681						freeaddrinfo(res);
682					return (-1);
683				}
684				syslog(LOG_ERR, "bindresvport_sa: %m");
685				exit(1);
686			}
687
688			if (svcport_str == NULL) {
689				svcport_str = malloc(NI_MAXSERV * sizeof(char));
690				if (svcport_str == NULL)
691					out_of_mem();
692				mallocd_svcport = 1;
693
694				if (getnameinfo(res->ai_addr,
695				res->ai_addr->sa_len, NULL, NI_MAXHOST,
696				svcport_str, NI_MAXSERV * sizeof(char),
697				NI_NUMERICHOST | NI_NUMERICSERV))
698					errx(1, "Cannot get port number");
699			}
700		}
701
702		if (mallocd_res != 0) {
703			free(res->ai_addr);
704			free(res);
705		} else
706			freeaddrinfo(res);
707		res = NULL;
708	}
709	return (0);
710}
711
712/*
713 * Called after all the create_service() calls have succeeded, to complete
714 * the setup and registration.
715 */
716static void
717complete_service(struct netconfig *nconf, char *port_str)
718{
719	struct addrinfo hints, *res = NULL;
720	struct __rpc_sockinfo si;
721	struct netbuf servaddr;
722	SVCXPRT	*transp = NULL;
723	int aicode, fd, nhostsbak;
724	int registered = 0;
725
726	if ((nconf->nc_semantics != NC_TPI_CLTS) &&
727	    (nconf->nc_semantics != NC_TPI_COTS) &&
728	    (nconf->nc_semantics != NC_TPI_COTS_ORD))
729		return;	/* not my type */
730
731	/*
732	 * XXX - using RPC library internal functions.
733	 */
734	if (!__rpc_nconf2sockinfo(nconf, &si)) {
735		syslog(LOG_ERR, "cannot get information for %s",
736		    nconf->nc_netid);
737		return;
738	}
739
740	nhostsbak = nhosts;
741	while (nhostsbak > 0) {
742		--nhostsbak;
743		if (sock_fdpos >= sock_fdcnt) {
744			/* Should never happen. */
745			syslog(LOG_ERR, "Ran out of socket fd's");
746			return;
747		}
748		fd = sock_fd[sock_fdpos++];
749		if (fd < 0)
750			continue;
751
752		if (nconf->nc_semantics != NC_TPI_CLTS)
753		    listen(fd, SOMAXCONN);
754
755		transp = svc_tli_create(fd, nconf, NULL,
756		    RPC_MAXDATASIZE, RPC_MAXDATASIZE);
757
758		if (transp != (SVCXPRT *) NULL) {
759			if (!svc_reg(transp, NLM_PROG, NLM_SM, nlm_prog_0,
760			    NULL))
761				syslog(LOG_ERR,
762				    "can't register %s NLM_PROG, NLM_SM service",
763				    nconf->nc_netid);
764
765			if (!svc_reg(transp, NLM_PROG, NLM_VERS, nlm_prog_1,
766			    NULL))
767				syslog(LOG_ERR,
768				    "can't register %s NLM_PROG, NLM_VERS service",
769				    nconf->nc_netid);
770
771			if (!svc_reg(transp, NLM_PROG, NLM_VERSX, nlm_prog_3,
772			    NULL))
773				syslog(LOG_ERR,
774				    "can't register %s NLM_PROG, NLM_VERSX service",
775				    nconf->nc_netid);
776
777			if (!svc_reg(transp, NLM_PROG, NLM_VERS4, nlm_prog_4,
778			    NULL))
779				syslog(LOG_ERR,
780				    "can't register %s NLM_PROG, NLM_VERS4 service",
781				    nconf->nc_netid);
782
783		} else
784			syslog(LOG_WARNING, "can't create %s services",
785			    nconf->nc_netid);
786
787		if (registered == 0) {
788			registered = 1;
789			memset(&hints, 0, sizeof hints);
790			hints.ai_flags = AI_PASSIVE;
791			hints.ai_family = si.si_af;
792			hints.ai_socktype = si.si_socktype;
793			hints.ai_protocol = si.si_proto;
794
795			if ((aicode = getaddrinfo(NULL, port_str, &hints,
796			    &res)) != 0) {
797				syslog(LOG_ERR, "cannot get local address: %s",
798				    gai_strerror(aicode));
799				exit(1);
800			}
801
802			servaddr.buf = malloc(res->ai_addrlen);
803			memcpy(servaddr.buf, res->ai_addr, res->ai_addrlen);
804			servaddr.len = res->ai_addrlen;
805
806			rpcb_set(NLM_PROG, NLM_SM, nconf, &servaddr);
807			rpcb_set(NLM_PROG, NLM_VERS, nconf, &servaddr);
808			rpcb_set(NLM_PROG, NLM_VERSX, nconf, &servaddr);
809			rpcb_set(NLM_PROG, NLM_VERS4, nconf, &servaddr);
810
811			xcreated++;
812			freeaddrinfo(res);
813		}
814	} /* end while */
815}
816
817/*
818 * Clear out sockets after a failure to bind one of them, so that the
819 * cycle of socket creation/binding can start anew.
820 */
821static void
822clearout_service(void)
823{
824	int i;
825
826	for (i = 0; i < sock_fdcnt; i++) {
827		if (sock_fd[i] >= 0) {
828			shutdown(sock_fd[i], SHUT_RDWR);
829			close(sock_fd[i]);
830		}
831	}
832}
833
834void
835sigalarm_handler(void)
836{
837
838	grace_expired = 1;
839}
840
841void
842usage()
843{
844	errx(1, "usage: rpc.lockd [-d <debuglevel>]"
845	    " [-g <grace period>] [-h <bindip>] [-p <port>]");
846}
847
848/*
849 * init_nsm --
850 *	Reset the NSM state-of-the-world and acquire its state.
851 */
852void
853init_nsm(void)
854{
855	enum clnt_stat ret;
856	my_id id;
857	sm_stat stat;
858	char name[] = "NFS NLM";
859
860	/*
861	 * !!!
862	 * The my_id structure isn't used by the SM_UNMON_ALL call, as far
863	 * as I know.  Leave it empty for now.
864	 */
865	memset(&id, 0, sizeof(id));
866	id.my_name = name;
867
868	/*
869	 * !!!
870	 * The statd program must already be registered when lockd runs.
871	 */
872	do {
873		ret = callrpc("localhost", SM_PROG, SM_VERS, SM_UNMON_ALL,
874		    (xdrproc_t)xdr_my_id, &id, (xdrproc_t)xdr_sm_stat, &stat);
875		if (ret == RPC_PROGUNAVAIL) {
876			syslog(LOG_WARNING, "%lu %s", SM_PROG,
877			    clnt_sperrno(ret));
878			sleep(2);
879			continue;
880		}
881		break;
882	} while (0);
883
884	if (ret != 0) {
885		syslog(LOG_ERR, "%lu %s", SM_PROG, clnt_sperrno(ret));
886		exit(1);
887	}
888
889	nsm_state = stat.state;
890
891	/* setup constant data for SM_MON calls */
892	mon_host.mon_id.my_id.my_name = localhost;
893	mon_host.mon_id.my_id.my_prog = NLM_PROG;
894	mon_host.mon_id.my_id.my_vers = NLM_SM;
895	mon_host.mon_id.my_id.my_proc = NLM_SM_NOTIFY;  /* bsdi addition */
896}
897
898/*
899 * Out of memory, fatal
900 */
901void out_of_mem()
902{
903	syslog(LOG_ERR, "out of memory");
904	exit(2);
905}
906