xref: /dragonfly/usr.sbin/rpcbind/rpcbind.c (revision 8d411d7d) 
1 /*
2  * Copyright (c) 2009, Sun Microsystems, Inc.
3  * 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 are met:
7  * - Redistributions of source code must retain the above copyright notice,
8  *   this list of conditions and the following disclaimer.
9  * - Redistributions in binary form must reproduce the above copyright notice,
10  *   this list of conditions and the following disclaimer in the documentation
11  *   and/or other materials provided with the distribution.
12  * - Neither the name of Sun Microsystems, Inc. nor the names of its
13  *   contributors may be used to endorse or promote products derived
14  *   from this software without specific prior written permission.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
20  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26  * POSSIBILITY OF SUCH DAMAGE.
27  *
28  * @(#)rpcbind.c	1.19	94/04/25 SMI; 1.35 89/04/21 Copyr 1984 Sun Micro
29  * $NetBSD: rpcbind.c,v 1.3 2002/11/08 00:16:40 fvdl Exp $
30  * $FreeBSD: src/usr.sbin/rpcbind/rpcbind.c,v 1.20 2008/02/14 20:12:23 yar Exp $
31  */
32 /*
33  * Copyright (c) 1984 - 1991 by Sun Microsystems, Inc.
34  */
35 
36 /*
37  * rpcbind.c
38  * Implements the program, version to address mapping for rpc.
39  *
40  */
41 
42 #include <sys/types.h>
43 #include <sys/stat.h>
44 #include <sys/errno.h>
45 #include <sys/time.h>
46 #include <sys/resource.h>
47 #include <sys/wait.h>
48 #include <sys/signal.h>
49 #include <sys/socket.h>
50 #include <sys/un.h>
51 #include <rpc/rpc.h>
52 #include <rpc/rpc_com.h>
53 #ifdef PORTMAP
54 #include <netinet/in.h>
55 #endif
56 #include <arpa/inet.h>
57 #include <fcntl.h>
58 #include <netdb.h>
59 #include <stdio.h>
60 #include <netconfig.h>
61 #include <stdlib.h>
62 #include <unistd.h>
63 #include <syslog.h>
64 #include <err.h>
65 #include <libutil.h>
66 #include <pwd.h>
67 #include <string.h>
68 #include "rpcbind.h"
69 
70 /* Global variables */
71 int debugging = 0;	/* Tell me what's going on */
72 int doabort = 0;	/* When debugging, do an abort on errors */
73 rpcblist_ptr list_rbl;	/* A list of version 3/4 rpcbind services */
74 
75 /* who to suid to if -s is given */
76 #define RUN_AS  "daemon"
77 
78 #define RPCBINDDLOCK "/var/run/rpcbind.lock"
79 
80 int runasdaemon = 0;
81 int insecure = 0;
82 int oldstyle_local = 0;
83 int verboselog = 0;
84 
85 char **hosts = NULL;
86 int ipv6_only = 0;
87 int nhosts = 0;
88 int on = 1;
89 int rpcbindlockfd;
90 
91 #ifdef WARMSTART
92 /* Local Variable */
93 static int warmstart = 0;	/* Grab an old copy of registrations. */
94 #endif
95 
96 #ifdef PORTMAP
97 struct pmaplist *list_pml;	/* A list of version 2 rpcbind services */
98 char *udptrans;		/* Name of UDP transport */
99 char *tcptrans;		/* Name of TCP transport */
100 char *udp_uaddr;	/* Universal UDP address */
101 char *tcp_uaddr;	/* Universal TCP address */
102 #endif
103 static char servname[] = "rpcbind";
104 static char superuser[] = "superuser";
105 
106 static int	init_transport(struct netconfig *);
107 static void	rbllist_add(rpcprog_t, rpcvers_t, struct netconfig *,
108 			    struct netbuf *);
109 static void	terminate(int);
110 static void	parseargs(int, char *[]);
111 
112 int
113 main(int argc, char *argv[])
114 {
115 	struct netconfig *nconf;
116 	void *nc_handle;	/* Net config handle */
117 	struct rlimit rl;
118 	int maxrec = RPC_MAXDATASIZE;
119 
120 	parseargs(argc, argv);
121 
122 	/* Check that another rpcbind isn't already running. */
123 	if ((rpcbindlockfd = (open(RPCBINDDLOCK,
124 	    O_RDONLY|O_CREAT, 0444))) == -1)
125 		err(1, "%s", RPCBINDDLOCK);
126 
127 	if(flock(rpcbindlockfd, LOCK_EX|LOCK_NB) == -1 && errno == EWOULDBLOCK)
128 		errx(1, "another rpcbind is already running. Aborting");
129 
130 	getrlimit(RLIMIT_NOFILE, &rl);
131 	if (rl.rlim_cur < 128) {
132 		if (rl.rlim_max <= 128)
133 			rl.rlim_cur = rl.rlim_max;
134 		else
135 			rl.rlim_cur = 128;
136 		setrlimit(RLIMIT_NOFILE, &rl);
137 	}
138 	openlog("rpcbind", LOG_CONS, LOG_DAEMON);
139 	if (geteuid()) { /* This command allowed only to root */
140 		fprintf(stderr, "Sorry. You are not superuser\n");
141 		exit(1);
142 	}
143 	nc_handle = setnetconfig(); 	/* open netconfig file */
144 	if (nc_handle == NULL) {
145 		syslog(LOG_ERR, "could not read /etc/netconfig");
146 		exit(1);
147 	}
148 #ifdef PORTMAP
149 	udptrans = "";
150 	tcptrans = "";
151 #endif
152 
153 	nconf = getnetconfigent("local");
154 	if (nconf == NULL)
155 		nconf = getnetconfigent("unix");
156 	if (nconf == NULL) {
157 		syslog(LOG_ERR, "%s: can't find local transport\n", argv[0]);
158 		exit(1);
159 	}
160 
161 	rpc_control(RPC_SVC_CONNMAXREC_SET, &maxrec);
162 
163 	init_transport(nconf);
164 
165 	while ((nconf = getnetconfig(nc_handle))) {
166 	    if (nconf->nc_flag & NC_VISIBLE)
167 		if (ipv6_only != 1 || strcmp(nconf->nc_protofmly, "inet") != 0)
168 		    init_transport(nconf);
169 	}
170 	endnetconfig(nc_handle);
171 
172 	/* catch the usual termination signals for graceful exit */
173 	signal(SIGCHLD, reap);
174 	signal(SIGINT, terminate);
175 	signal(SIGTERM, terminate);
176 	signal(SIGQUIT, terminate);
177 	/* ignore others that could get sent */
178 	signal(SIGPIPE, SIG_IGN);
179 	signal(SIGHUP, SIG_IGN);
180 	signal(SIGUSR1, SIG_IGN);
181 	signal(SIGUSR2, SIG_IGN);
182 #ifdef WARMSTART
183 	if (warmstart) {
184 		read_warmstart();
185 	}
186 #endif
187 	if (debugging) {
188 		printf("rpcbind debugging enabled.");
189 		if (doabort) {
190 			printf("  Will abort on errors!\n");
191 		} else {
192 			printf("\n");
193 		}
194 	} else {
195 		if (daemon(0, 0))
196 			err(1, "fork failed");
197 	}
198 
199 	if (runasdaemon) {
200 		struct passwd *p;
201 
202 		if((p = getpwnam(RUN_AS)) == NULL) {
203 			syslog(LOG_ERR, "cannot get uid of daemon: %m");
204 			exit(1);
205 		}
206 		if (setuid(p->pw_uid) == -1) {
207 			syslog(LOG_ERR, "setuid to daemon failed: %m");
208 			exit(1);
209 		}
210 	}
211 
212 	network_init();
213 
214 	my_svc_run();
215 	syslog(LOG_ERR, "svc_run returned unexpectedly");
216 	rpcbind_abort();
217 	/* NOTREACHED */
218 
219 	return 0;
220 }
221 
222 /*
223  * Adds the entry into the rpcbind database.
224  * If PORTMAP, then for UDP and TCP, it adds the entries for version 2 also
225  * Returns 0 if succeeds, else fails
226  */
227 static int
228 init_transport(struct netconfig *nconf)
229 {
230 	int fd;
231 	struct t_bind taddr;
232 	struct addrinfo hints, *res = NULL;
233 	struct __rpc_sockinfo si;
234 	SVCXPRT	*my_xprt;
235 	int status;	/* bound checking ? */
236 	int aicode;
237 	int addrlen;
238 	int nhostsbak;
239 	int bound;
240 	struct sockaddr *sa;
241 	u_int32_t host_addr[4];  /* IPv4 or IPv6 */
242 	struct sockaddr_un sun;
243 	mode_t oldmask;
244 
245 	if ((nconf->nc_semantics != NC_TPI_CLTS) &&
246 	    (nconf->nc_semantics != NC_TPI_COTS) &&
247 	    (nconf->nc_semantics != NC_TPI_COTS_ORD))
248 	    return (1);	/* not my type */
249 #ifdef ND_DEBUG
250 	if (debugging) {
251 	    int i;
252 	    char **s;
253 
254 	    fprintf(stderr, "%s: %ld lookup routines :\n",
255 		nconf->nc_netid, nconf->nc_nlookups);
256 	    for (i = 0, s = nconf->nc_lookups; i < nconf->nc_nlookups;
257 		i++, s++)
258 		fprintf(stderr, "[%d] - %s\n", i, *s);
259 	}
260 #endif
261 
262 	/*
263 	 * XXX - using RPC library internal functions.
264 	 */
265 	if ((strcmp(nconf->nc_netid, "local") == 0) ||
266 	    (strcmp(nconf->nc_netid, "unix") == 0)) {
267 	    /*
268 	     * For other transports we call this later, for each socket we
269 	     * like to bind.
270 	     */
271 	    if ((fd = __rpc_nconf2fd(nconf)) < 0) {
272 		int non_fatal = 0;
273 		if (errno == EPROTONOSUPPORT)
274 		    non_fatal = 1;
275 		syslog(non_fatal?LOG_DEBUG:LOG_ERR, "cannot create socket for %s",
276 		    nconf->nc_netid);
277 		return (1);
278 	    }
279 	}
280 
281 	if (!__rpc_nconf2sockinfo(nconf, &si)) {
282 	    syslog(LOG_ERR, "cannot get information for %s",
283 		nconf->nc_netid);
284 	    return (1);
285 	}
286 
287 	if ((strcmp(nconf->nc_netid, "local") == 0) ||
288 	    (strcmp(nconf->nc_netid, "unix") == 0)) {
289 	    memset(&sun, 0, sizeof sun);
290 	    sun.sun_family = AF_LOCAL;
291 	    unlink(_PATH_RPCBINDSOCK);
292 	    strcpy(sun.sun_path, _PATH_RPCBINDSOCK);
293 	    sun.sun_len = SUN_LEN(&sun);
294 	    addrlen = sizeof (struct sockaddr_un);
295 	    sa = (struct sockaddr *)&sun;
296 	} else {
297 	    /* Get rpcbind's address on this transport */
298 
299 	    memset(&hints, 0, sizeof hints);
300 	    hints.ai_flags = AI_PASSIVE;
301 	    hints.ai_family = si.si_af;
302 	    hints.ai_socktype = si.si_socktype;
303 	    hints.ai_protocol = si.si_proto;
304 	}
305 
306 	if ((strcmp(nconf->nc_netid, "local") != 0) &&
307 	    (strcmp(nconf->nc_netid, "unix") != 0)) {
308 	    /*
309 	     * If no hosts were specified, just bind to INADDR_ANY.
310 	     * Otherwise  make sure 127.0.0.1 is added to the list.
311 	     */
312 	    nhostsbak = nhosts;
313 	    nhostsbak++;
314 	    hosts = realloc(hosts, nhostsbak * sizeof(char *));
315 	    if (nhostsbak == 1)
316 	        hosts[0] = "*";
317 	    else {
318 		if (hints.ai_family == AF_INET) {
319 		    hosts[nhostsbak - 1] = "127.0.0.1";
320 		} else if (hints.ai_family == AF_INET6) {
321 		    hosts[nhostsbak - 1] = "::1";
322 		} else
323 		    return 1;
324 	    }
325 
326 	    /*
327 	     * Bind to specific IPs if asked to
328 	     */
329 	    bound = 0;
330 	    while (nhostsbak > 0) {
331 		--nhostsbak;
332 		/*
333 		 * XXX - using RPC library internal functions.
334 		 */
335 		if ((fd = __rpc_nconf2fd(nconf)) < 0) {
336 		    int non_fatal = 0;
337 		    if (errno == EPROTONOSUPPORT &&
338 			nconf->nc_semantics != NC_TPI_CLTS)
339 			non_fatal = 1;
340 		    syslog(non_fatal ? LOG_DEBUG : LOG_ERR,
341 			"cannot create socket for %s", nconf->nc_netid);
342 		    return (1);
343 		}
344 		switch (hints.ai_family) {
345 		case AF_INET:
346 		    if (inet_pton(AF_INET, hosts[nhostsbak],
347 			host_addr) == 1) {
348 			hints.ai_flags &= AI_NUMERICHOST;
349 		    } else {
350 			/*
351 			 * Skip if we have an AF_INET6 address.
352 			 */
353 			if (inet_pton(AF_INET6,
354 			    hosts[nhostsbak], host_addr) == 1) {
355 			    close(fd);
356 			    continue;
357 			}
358 		    }
359 		    break;
360 		case AF_INET6:
361 		    if (inet_pton(AF_INET6, hosts[nhostsbak],
362 			host_addr) == 1) {
363 			hints.ai_flags &= AI_NUMERICHOST;
364 		    } else {
365 			/*
366 			 * Skip if we have an AF_INET address.
367 			 */
368 			if (inet_pton(AF_INET, hosts[nhostsbak],
369 			    host_addr) == 1) {
370 				close(fd);
371 				continue;
372 			}
373 		    }
374 		    if (setsockopt(fd, IPPROTO_IPV6,
375 			IPV6_V6ONLY, &on, sizeof on) < 0) {
376 			syslog(LOG_ERR,
377 			    "can't set v6-only binding for "
378 			    "ipv6 socket: %m");
379 			continue;
380 		    }
381 		    break;
382 		default:
383 		    break;
384 		}
385 
386 		/*
387 		 * If no hosts were specified, just bind to INADDR_ANY
388 		 */
389 		if (strcmp("*", hosts[nhostsbak]) == 0)
390 		    hosts[nhostsbak] = NULL;
391 		if ((strcmp(nconf->nc_netid, "local") != 0) &&
392 		    (strcmp(nconf->nc_netid, "unix") != 0)) {
393 		    if ((aicode = getaddrinfo(hosts[nhostsbak],
394 			servname, &hints, &res)) != 0) {
395 			syslog(LOG_ERR,
396 			    "cannot get local address for %s: %s",
397 			    nconf->nc_netid, gai_strerror(aicode));
398 			continue;
399 		    }
400 		    addrlen = res->ai_addrlen;
401 		    sa = (struct sockaddr *)res->ai_addr;
402 		}
403 		oldmask = umask(S_IXUSR|S_IXGRP|S_IXOTH);
404 		if (bind(fd, sa, addrlen) != 0) {
405 		    syslog(LOG_ERR, "cannot bind %s on %s: %m",
406 			(hosts[nhostsbak] == NULL) ? "*" :
407 			    hosts[nhostsbak], nconf->nc_netid);
408 		    if (res != NULL)
409 			freeaddrinfo(res);
410 		    continue;
411 		} else
412 		    bound = 1;
413 		umask(oldmask);
414 
415 		/* Copy the address */
416 		taddr.addr.len = taddr.addr.maxlen = addrlen;
417 		taddr.addr.buf = malloc(addrlen);
418 		if (taddr.addr.buf == NULL) {
419 		    syslog(LOG_ERR,
420 			"cannot allocate memory for %s address",
421 			nconf->nc_netid);
422 		    if (res != NULL)
423 			freeaddrinfo(res);
424 		    return 1;
425 		}
426 		memcpy(taddr.addr.buf, sa, addrlen);
427 #ifdef ND_DEBUG
428 		if (debugging) {
429 		    /*
430 		     * for debugging print out our universal
431 		     * address
432 		     */
433 		    char *uaddr;
434 		    struct netbuf nb;
435 
436 		    nb.buf = sa;
437 		    nb.len = nb.maxlen = sa->sa_len;
438 		    uaddr = taddr2uaddr(nconf, &nb);
439 		    fprintf(stderr, "rpcbind : my address is %s\n", uaddr);
440 		    free(uaddr);
441 		}
442 #endif
443 
444 		if (nconf->nc_semantics != NC_TPI_CLTS)
445 		    listen(fd, SOMAXCONN);
446 
447 		my_xprt = (SVCXPRT *)svc_tli_create(fd, nconf, &taddr,
448 		    RPC_MAXDATASIZE, RPC_MAXDATASIZE);
449 		if (my_xprt == NULL) {
450 		    syslog(LOG_ERR, "%s: could not create service",
451 			nconf->nc_netid);
452 		    goto error;
453 		}
454 	    }
455 	    if (!bound)
456 		return 1;
457 	} else {
458 	    oldmask = umask(S_IXUSR|S_IXGRP|S_IXOTH);
459 	    if (bind(fd, sa, addrlen) < 0) {
460 		syslog(LOG_ERR, "cannot bind %s: %m", nconf->nc_netid);
461 		if (res != NULL)
462 		    freeaddrinfo(res);
463 		return 1;
464 	    }
465 	    umask(oldmask);
466 
467 	    /* Copy the address */
468 	    taddr.addr.len = taddr.addr.maxlen = addrlen;
469 	    taddr.addr.buf = malloc(addrlen);
470 	    if (taddr.addr.buf == NULL) {
471 		syslog(LOG_ERR, "cannot allocate memory for %s address",
472 		    nconf->nc_netid);
473 		if (res != NULL)
474 		    freeaddrinfo(res);
475 		return 1;
476 	    }
477 	    memcpy(taddr.addr.buf, sa, addrlen);
478 #ifdef ND_DEBUG
479 	    if (debugging) {
480 		/* for debugging print out our universal address */
481 		char *uaddr;
482 		struct netbuf nb;
483 
484 		nb.buf = sa;
485 		nb.len = nb.maxlen = sa->sa_len;
486 		uaddr = taddr2uaddr(nconf, &nb);
487 		fprintf(stderr, "rpcbind : my address is %s\n", uaddr);
488 		free(uaddr);
489 	    }
490 #endif
491 
492 	    if (nconf->nc_semantics != NC_TPI_CLTS)
493 		listen(fd, SOMAXCONN);
494 
495 	    my_xprt = (SVCXPRT *)svc_tli_create(fd, nconf, &taddr,
496 		RPC_MAXDATASIZE, RPC_MAXDATASIZE);
497 	    if (my_xprt == NULL) {
498 		syslog(LOG_ERR, "%s: could not create service",
499 		    nconf->nc_netid);
500 		goto error;
501 	    }
502 	}
503 
504 #ifdef PORTMAP
505 	/*
506 	 * Register both the versions for tcp/ip, udp/ip and local.
507 	 */
508 	if ((strcmp(nconf->nc_protofmly, NC_INET) == 0 &&
509 		(strcmp(nconf->nc_proto, NC_TCP) == 0 ||
510 		strcmp(nconf->nc_proto, NC_UDP) == 0)) ||
511 		(strcmp(nconf->nc_netid, "unix") == 0) ||
512 		(strcmp(nconf->nc_netid, "local") == 0)) {
513 		struct pmaplist *pml;
514 
515 		if (!svc_register(my_xprt, PMAPPROG, PMAPVERS,
516 			pmap_service, 0)) {
517 			syslog(LOG_ERR, "could not register on %s",
518 					nconf->nc_netid);
519 			goto error;
520 		}
521 		pml = malloc(sizeof (struct pmaplist));
522 		if (pml == NULL) {
523 			syslog(LOG_ERR, "no memory!");
524 			exit(1);
525 		}
526 		pml->pml_map.pm_prog = PMAPPROG;
527 		pml->pml_map.pm_vers = PMAPVERS;
528 		pml->pml_map.pm_port = PMAPPORT;
529 		if (strcmp(nconf->nc_proto, NC_TCP) == 0) {
530 			if (tcptrans[0]) {
531 				syslog(LOG_ERR,
532 				"cannot have more than one TCP transport");
533 				goto error;
534 			}
535 			tcptrans = strdup(nconf->nc_netid);
536 			pml->pml_map.pm_prot = IPPROTO_TCP;
537 
538 			/* Let's snarf the universal address */
539 			/* "h1.h2.h3.h4.p1.p2" */
540 			tcp_uaddr = taddr2uaddr(nconf, &taddr.addr);
541 		} else if (strcmp(nconf->nc_proto, NC_UDP) == 0) {
542 			if (udptrans[0]) {
543 				syslog(LOG_ERR,
544 				"cannot have more than one UDP transport");
545 				goto error;
546 			}
547 			udptrans = strdup(nconf->nc_netid);
548 			pml->pml_map.pm_prot = IPPROTO_UDP;
549 
550 			/* Let's snarf the universal address */
551 			/* "h1.h2.h3.h4.p1.p2" */
552 			udp_uaddr = taddr2uaddr(nconf, &taddr.addr);
553 		} else if (strcmp(nconf->nc_netid, "local") == 0)
554 			pml->pml_map.pm_prot = IPPROTO_ST;
555 		else if (strcmp(nconf->nc_netid, "unix") == 0)
556 			pml->pml_map.pm_prot = IPPROTO_ST;
557 		pml->pml_next = list_pml;
558 		list_pml = pml;
559 
560 		/* Add version 3 information */
561 		pml = malloc(sizeof (struct pmaplist));
562 		if (pml == NULL) {
563 			syslog(LOG_ERR, "no memory!");
564 			exit(1);
565 		}
566 		pml->pml_map = list_pml->pml_map;
567 		pml->pml_map.pm_vers = RPCBVERS;
568 		pml->pml_next = list_pml;
569 		list_pml = pml;
570 
571 		/* Add version 4 information */
572 		pml = malloc (sizeof (struct pmaplist));
573 		if (pml == NULL) {
574 			syslog(LOG_ERR, "no memory!");
575 			exit(1);
576 		}
577 		pml->pml_map = list_pml->pml_map;
578 		pml->pml_map.pm_vers = RPCBVERS4;
579 		pml->pml_next = list_pml;
580 		list_pml = pml;
581 
582 		/* Also add version 2 stuff to rpcbind list */
583 		rbllist_add(PMAPPROG, PMAPVERS, nconf, &taddr.addr);
584 	}
585 #endif
586 
587 	/* version 3 registration */
588 	if (!svc_reg(my_xprt, RPCBPROG, RPCBVERS, rpcb_service_3, NULL)) {
589 		syslog(LOG_ERR, "could not register %s version 3",
590 				nconf->nc_netid);
591 		goto error;
592 	}
593 	rbllist_add(RPCBPROG, RPCBVERS, nconf, &taddr.addr);
594 
595 	/* version 4 registration */
596 	if (!svc_reg(my_xprt, RPCBPROG, RPCBVERS4, rpcb_service_4, NULL)) {
597 		syslog(LOG_ERR, "could not register %s version 4",
598 				nconf->nc_netid);
599 		goto error;
600 	}
601 	rbllist_add(RPCBPROG, RPCBVERS4, nconf, &taddr.addr);
602 
603 	/* decide if bound checking works for this transport */
604 	status = add_bndlist(nconf, &taddr.addr);
605 #ifdef BIND_DEBUG
606 	if (debugging) {
607 		if (status < 0) {
608 			fprintf(stderr, "Error in finding bind status for %s\n",
609 				nconf->nc_netid);
610 		} else if (status == 0) {
611 			fprintf(stderr, "check binding for %s\n",
612 				nconf->nc_netid);
613 		} else if (status > 0) {
614 			fprintf(stderr, "No check binding for %s\n",
615 				nconf->nc_netid);
616 		}
617 	}
618 #endif
619 	/*
620 	 * rmtcall only supported on CLTS transports for now.
621 	 */
622 	if (nconf->nc_semantics == NC_TPI_CLTS) {
623 		status = create_rmtcall_fd(nconf);
624 
625 #ifdef BIND_DEBUG
626 		if (debugging) {
627 			if (status < 0) {
628 				fprintf(stderr,
629 				    "Could not create rmtcall fd for %s\n",
630 					nconf->nc_netid);
631 			} else {
632 				fprintf(stderr, "rmtcall fd for %s is %d\n",
633 					nconf->nc_netid, status);
634 			}
635 		}
636 #endif
637 	}
638 	return (0);
639 error:
640 	close(fd);
641 	return (1);
642 }
643 
644 static void
645 rbllist_add(rpcprog_t prog, rpcvers_t vers, struct netconfig *nconf,
646 	    struct netbuf *addr)
647 {
648 	rpcblist_ptr rbl;
649 
650 	rbl = malloc(sizeof (rpcblist));
651 	if (rbl == NULL) {
652 		syslog(LOG_ERR, "no memory!");
653 		exit(1);
654 	}
655 
656 	rbl->rpcb_map.r_prog = prog;
657 	rbl->rpcb_map.r_vers = vers;
658 	rbl->rpcb_map.r_netid = strdup(nconf->nc_netid);
659 	rbl->rpcb_map.r_addr = taddr2uaddr(nconf, addr);
660 	rbl->rpcb_map.r_owner = strdup(superuser);
661 	rbl->rpcb_next = list_rbl;	/* Attach to global list */
662 	list_rbl = rbl;
663 }
664 
665 /*
666  * Catch the signal and die
667  */
668 static void
669 terminate(int dummy __unused)
670 {
671 	close(rpcbindlockfd);
672 #ifdef WARMSTART
673 	syslog(LOG_ERR,
674 		"rpcbind terminating on signal. Restart with \"rpcbind -w\"");
675 	write_warmstart();	/* Dump yourself */
676 #endif
677 	exit(2);
678 }
679 
680 void
681 rpcbind_abort(void)
682 {
683 #ifdef WARMSTART
684 	write_warmstart();	/* Dump yourself */
685 #endif
686 	abort();
687 }
688 
689 /* get command line options */
690 static void
691 parseargs(int argc, char *argv[])
692 {
693 	int c;
694 
695 #ifdef WARMSTART
696 #define	WSOP	"w"
697 #else
698 #define	WSOP	""
699 #endif
700 	while ((c = getopt(argc, argv, "6adh:iLls" WSOP)) != -1) {
701 		switch (c) {
702 		case '6':
703 			ipv6_only = 1;
704 			break;
705 		case 'a':
706 			doabort = 1;	/* when debugging, do an abort on */
707 			break;		/* errors; for rpcbind developers */
708 					/* only! */
709 		case 'd':
710 			debugging = 1;
711 			break;
712 		case 'h':
713 			++nhosts;
714 			hosts = realloc(hosts, nhosts * sizeof(char *));
715 			if (hosts == NULL)
716 				errx(1, "Out of memory");
717 			hosts[nhosts - 1] = strdup(optarg);
718 			if (hosts[nhosts - 1] == NULL)
719 				errx(1, "Out of memory");
720 			break;
721 		case 'i':
722 			insecure = 1;
723 			break;
724 		case 'L':
725 			oldstyle_local = 1;
726 			break;
727 		case 'l':
728 			verboselog = 1;
729 			break;
730 		case 's':
731 			runasdaemon = 1;
732 			break;
733 #ifdef WARMSTART
734 		case 'w':
735 			warmstart = 1;
736 			break;
737 #endif
738 		default:	/* error */
739 			fprintf(stderr,
740 			    "usage: rpcbind [-6adiLls%s] [-h bindip]\n",
741 			    WSOP);
742 			exit (1);
743 		}
744 	}
745 	if (doabort && !debugging) {
746 	    fprintf(stderr,
747 		"-a (abort) specified without -d (debugging) -- ignored.\n");
748 	    doabort = 0;
749 	}
750 #undef WSOP
751 }
752 
753 void
754 reap(int dummy __unused)
755 {
756 	int save_errno = errno;
757 
758 	while (wait3(NULL, WNOHANG, NULL) > 0)
759 		;
760 	errno = save_errno;
761 }
762 
763 void
764 toggle_verboselog(int dummy __unused)
765 {
766 	verboselog = !verboselog;
767 }
768