xref: /dragonfly/usr.sbin/rpcbind/rpcbind.c (revision 23b3ef78) 
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 <errno.h>
69 #include "rpcbind.h"
70 
71 /* Global variables */
72 int debugging = 0;	/* Tell me what's going on */
73 int doabort = 0;	/* When debugging, do an abort on errors */
74 rpcblist_ptr list_rbl;	/* A list of version 3/4 rpcbind services */
75 
76 /* who to suid to if -s is given */
77 #define RUN_AS  "daemon"
78 
79 #define RPCBINDDLOCK "/var/run/rpcbind.lock"
80 
81 int runasdaemon = 0;
82 int insecure = 0;
83 int oldstyle_local = 0;
84 int verboselog = 0;
85 
86 char **hosts = NULL;
87 int ipv6_only = 0;
88 int nhosts = 0;
89 int on = 1;
90 int rpcbindlockfd;
91 
92 #ifdef WARMSTART
93 /* Local Variable */
94 static int warmstart = 0;	/* Grab an old copy of registrations. */
95 #endif
96 
97 #ifdef PORTMAP
98 struct pmaplist *list_pml;	/* A list of version 2 rpcbind services */
99 char *udptrans;		/* Name of UDP transport */
100 char *tcptrans;		/* Name of TCP transport */
101 char *udp_uaddr;	/* Universal UDP address */
102 char *tcp_uaddr;	/* Universal TCP address */
103 #endif
104 static char servname[] = "rpcbind";
105 static char superuser[] = "superuser";
106 
107 static int	init_transport(struct netconfig *);
108 static void	rbllist_add(rpcprog_t, rpcvers_t, struct netconfig *,
109 			    struct netbuf *);
110 static void	terminate(int);
111 static void	parseargs(int, char *[]);
112 
113 int
114 main(int argc, char *argv[])
115 {
116 	struct netconfig *nconf;
117 	void *nc_handle;	/* Net config handle */
118 	struct rlimit rl;
119 	int maxrec = RPC_MAXDATASIZE;
120 
121 	parseargs(argc, argv);
122 
123 	/* Check that another rpcbind isn't already running. */
124 	if ((rpcbindlockfd = (open(RPCBINDDLOCK,
125 	    O_RDONLY|O_CREAT, 0444))) == -1)
126 		err(1, "%s", RPCBINDDLOCK);
127 
128 	if(flock(rpcbindlockfd, LOCK_EX|LOCK_NB) == -1 && errno == EWOULDBLOCK)
129 		errx(1, "another rpcbind is already running. Aborting");
130 
131 	getrlimit(RLIMIT_NOFILE, &rl);
132 	if (rl.rlim_cur < 128) {
133 		if (rl.rlim_max <= 128)
134 			rl.rlim_cur = rl.rlim_max;
135 		else
136 			rl.rlim_cur = 128;
137 		setrlimit(RLIMIT_NOFILE, &rl);
138 	}
139 	openlog("rpcbind", LOG_CONS, LOG_DAEMON);
140 	if (geteuid()) { /* This command allowed only to root */
141 		fprintf(stderr, "Sorry. You are not superuser\n");
142 		exit(1);
143 	}
144 	nc_handle = setnetconfig(); 	/* open netconfig file */
145 	if (nc_handle == NULL) {
146 		syslog(LOG_ERR, "could not read /etc/netconfig");
147 		exit(1);
148 	}
149 #ifdef PORTMAP
150 	udptrans = "";
151 	tcptrans = "";
152 #endif
153 
154 	nconf = getnetconfigent("local");
155 	if (nconf == NULL)
156 		nconf = getnetconfigent("unix");
157 	if (nconf == NULL) {
158 		syslog(LOG_ERR, "%s: can't find local transport\n", argv[0]);
159 		exit(1);
160 	}
161 
162 	rpc_control(RPC_SVC_CONNMAXREC_SET, &maxrec);
163 
164 	init_transport(nconf);
165 
166 	while ((nconf = getnetconfig(nc_handle))) {
167 	    if (nconf->nc_flag & NC_VISIBLE)
168 		if (ipv6_only != 1 || strcmp(nconf->nc_protofmly, "inet") != 0)
169 		    init_transport(nconf);
170 	}
171 	endnetconfig(nc_handle);
172 
173 	/* catch the usual termination signals for graceful exit */
174 	signal(SIGCHLD, reap);
175 	signal(SIGINT, terminate);
176 	signal(SIGTERM, terminate);
177 	signal(SIGQUIT, terminate);
178 	/* ignore others that could get sent */
179 	signal(SIGPIPE, SIG_IGN);
180 	signal(SIGHUP, SIG_IGN);
181 	signal(SIGUSR1, SIG_IGN);
182 	signal(SIGUSR2, SIG_IGN);
183 #ifdef WARMSTART
184 	if (warmstart) {
185 		read_warmstart();
186 	}
187 #endif
188 	if (debugging) {
189 		printf("rpcbind debugging enabled.");
190 		if (doabort) {
191 			printf("  Will abort on errors!\n");
192 		} else {
193 			printf("\n");
194 		}
195 	} else {
196 		if (daemon(0, 0))
197 			err(1, "fork failed");
198 	}
199 
200 	if (runasdaemon) {
201 		struct passwd *p;
202 
203 		if((p = getpwnam(RUN_AS)) == NULL) {
204 			syslog(LOG_ERR, "cannot get uid of daemon: %m");
205 			exit(1);
206 		}
207 		if (setuid(p->pw_uid) == -1) {
208 			syslog(LOG_ERR, "setuid to daemon failed: %m");
209 			exit(1);
210 		}
211 	}
212 
213 	network_init();
214 
215 	my_svc_run();
216 	syslog(LOG_ERR, "svc_run returned unexpectedly");
217 	rpcbind_abort();
218 	/* NOTREACHED */
219 
220 	return 0;
221 }
222 
223 /*
224  * Adds the entry into the rpcbind database.
225  * If PORTMAP, then for UDP and TCP, it adds the entries for version 2 also
226  * Returns 0 if succeeds, else fails
227  */
228 static int
229 init_transport(struct netconfig *nconf)
230 {
231 	int fd;
232 	struct t_bind taddr;
233 	struct addrinfo hints, *res = NULL;
234 	struct __rpc_sockinfo si;
235 	SVCXPRT	*my_xprt;
236 	int status;	/* bound checking ? */
237 	int aicode;
238 	int addrlen;
239 	int nhostsbak;
240 	int bound;
241 	struct sockaddr *sa;
242 	u_int32_t host_addr[4];  /* IPv4 or IPv6 */
243 	struct sockaddr_un sun;
244 	mode_t oldmask;
245 
246 	if ((nconf->nc_semantics != NC_TPI_CLTS) &&
247 	    (nconf->nc_semantics != NC_TPI_COTS) &&
248 	    (nconf->nc_semantics != NC_TPI_COTS_ORD))
249 	    return (1);	/* not my type */
250 #ifdef ND_DEBUG
251 	if (debugging) {
252 	    int i;
253 	    char **s;
254 
255 	    fprintf(stderr, "%s: %ld lookup routines :\n",
256 		nconf->nc_netid, nconf->nc_nlookups);
257 	    for (i = 0, s = nconf->nc_lookups; i < nconf->nc_nlookups;
258 		i++, s++)
259 		fprintf(stderr, "[%d] - %s\n", i, *s);
260 	}
261 #endif
262 
263 	/*
264 	 * XXX - using RPC library internal functions.
265 	 */
266 	if ((strcmp(nconf->nc_netid, "local") == 0) ||
267 	    (strcmp(nconf->nc_netid, "unix") == 0)) {
268 	    /*
269 	     * For other transports we call this later, for each socket we
270 	     * like to bind.
271 	     */
272 	    if ((fd = __rpc_nconf2fd(nconf)) < 0) {
273 		int non_fatal = 0;
274 		if (errno == EPROTONOSUPPORT)
275 		    non_fatal = 1;
276 		syslog(non_fatal?LOG_DEBUG:LOG_ERR, "cannot create socket for %s",
277 		    nconf->nc_netid);
278 		return (1);
279 	    }
280 	}
281 
282 	if (!__rpc_nconf2sockinfo(nconf, &si)) {
283 	    syslog(LOG_ERR, "cannot get information for %s",
284 		nconf->nc_netid);
285 	    return (1);
286 	}
287 
288 	if ((strcmp(nconf->nc_netid, "local") == 0) ||
289 	    (strcmp(nconf->nc_netid, "unix") == 0)) {
290 	    memset(&sun, 0, sizeof sun);
291 	    sun.sun_family = AF_LOCAL;
292 	    unlink(_PATH_RPCBINDSOCK);
293 	    strcpy(sun.sun_path, _PATH_RPCBINDSOCK);
294 	    sun.sun_len = SUN_LEN(&sun);
295 	    addrlen = sizeof (struct sockaddr_un);
296 	    sa = (struct sockaddr *)&sun;
297 	} else {
298 	    /* Get rpcbind's address on this transport */
299 
300 	    memset(&hints, 0, sizeof hints);
301 	    hints.ai_flags = AI_PASSIVE;
302 	    hints.ai_family = si.si_af;
303 	    hints.ai_socktype = si.si_socktype;
304 	    hints.ai_protocol = si.si_proto;
305 	}
306 
307 	if ((strcmp(nconf->nc_netid, "local") != 0) &&
308 	    (strcmp(nconf->nc_netid, "unix") != 0)) {
309 	    /*
310 	     * If no hosts were specified, just bind to INADDR_ANY.
311 	     * Otherwise  make sure 127.0.0.1 is added to the list.
312 	     */
313 	    nhostsbak = nhosts;
314 	    nhostsbak++;
315 	    hosts = realloc(hosts, nhostsbak * sizeof(char *));
316 	    if (nhostsbak == 1)
317 	        hosts[0] = "*";
318 	    else {
319 		if (hints.ai_family == AF_INET) {
320 		    hosts[nhostsbak - 1] = "127.0.0.1";
321 		} else if (hints.ai_family == AF_INET6) {
322 		    hosts[nhostsbak - 1] = "::1";
323 		} else
324 		    return 1;
325 	    }
326 
327 	    /*
328 	     * Bind to specific IPs if asked to
329 	     */
330 	    bound = 0;
331 	    while (nhostsbak > 0) {
332 		--nhostsbak;
333 		/*
334 		 * XXX - using RPC library internal functions.
335 		 */
336 		if ((fd = __rpc_nconf2fd(nconf)) < 0) {
337 		    int non_fatal = 0;
338 		    if (errno == EPROTONOSUPPORT &&
339 			nconf->nc_semantics != NC_TPI_CLTS)
340 			non_fatal = 1;
341 		    syslog(non_fatal ? LOG_DEBUG : LOG_ERR,
342 			"cannot create socket for %s", nconf->nc_netid);
343 		    return (1);
344 		}
345 		switch (hints.ai_family) {
346 		case AF_INET:
347 		    if (inet_pton(AF_INET, hosts[nhostsbak],
348 			host_addr) == 1) {
349 			hints.ai_flags &= AI_NUMERICHOST;
350 		    } else {
351 			/*
352 			 * Skip if we have an AF_INET6 address.
353 			 */
354 			if (inet_pton(AF_INET6,
355 			    hosts[nhostsbak], host_addr) == 1) {
356 			    close(fd);
357 			    continue;
358 			}
359 		    }
360 		    break;
361 		case AF_INET6:
362 		    if (inet_pton(AF_INET6, hosts[nhostsbak],
363 			host_addr) == 1) {
364 			hints.ai_flags &= AI_NUMERICHOST;
365 		    } else {
366 			/*
367 			 * Skip if we have an AF_INET address.
368 			 */
369 			if (inet_pton(AF_INET, hosts[nhostsbak],
370 			    host_addr) == 1) {
371 				close(fd);
372 				continue;
373 			}
374 		    }
375 		    if (setsockopt(fd, IPPROTO_IPV6,
376 			IPV6_V6ONLY, &on, sizeof on) < 0) {
377 			syslog(LOG_ERR,
378 			    "can't set v6-only binding for "
379 			    "ipv6 socket: %m");
380 			continue;
381 		    }
382 		    break;
383 		default:
384 		    break;
385 		}
386 
387 		/*
388 		 * If no hosts were specified, just bind to INADDR_ANY
389 		 */
390 		if (strcmp("*", hosts[nhostsbak]) == 0)
391 		    hosts[nhostsbak] = NULL;
392 		if ((strcmp(nconf->nc_netid, "local") != 0) &&
393 		    (strcmp(nconf->nc_netid, "unix") != 0)) {
394 		    if ((aicode = getaddrinfo(hosts[nhostsbak],
395 			servname, &hints, &res)) != 0) {
396 			syslog(LOG_ERR,
397 			    "cannot get local address for %s: %s",
398 			    nconf->nc_netid, gai_strerror(aicode));
399 			continue;
400 		    }
401 		    addrlen = res->ai_addrlen;
402 		    sa = (struct sockaddr *)res->ai_addr;
403 		}
404 		oldmask = umask(S_IXUSR|S_IXGRP|S_IXOTH);
405 		if (bind(fd, sa, addrlen) != 0) {
406 		    syslog(LOG_ERR, "cannot bind %s on %s: %m",
407 			(hosts[nhostsbak] == NULL) ? "*" :
408 			    hosts[nhostsbak], nconf->nc_netid);
409 		    if (res != NULL)
410 			freeaddrinfo(res);
411 		    continue;
412 		} else
413 		    bound = 1;
414 		umask(oldmask);
415 
416 		/* Copy the address */
417 		taddr.addr.len = taddr.addr.maxlen = addrlen;
418 		taddr.addr.buf = malloc(addrlen);
419 		if (taddr.addr.buf == NULL) {
420 		    syslog(LOG_ERR,
421 			"cannot allocate memory for %s address",
422 			nconf->nc_netid);
423 		    if (res != NULL)
424 			freeaddrinfo(res);
425 		    return 1;
426 		}
427 		memcpy(taddr.addr.buf, sa, addrlen);
428 #ifdef ND_DEBUG
429 		if (debugging) {
430 		    /*
431 		     * for debugging print out our universal
432 		     * address
433 		     */
434 		    char *uaddr;
435 		    struct netbuf nb;
436 
437 		    nb.buf = sa;
438 		    nb.len = nb.maxlen = sa->sa_len;
439 		    uaddr = taddr2uaddr(nconf, &nb);
440 		    fprintf(stderr, "rpcbind : my address is %s\n", uaddr);
441 		    free(uaddr);
442 		}
443 #endif
444 
445 		if (nconf->nc_semantics != NC_TPI_CLTS)
446 		    listen(fd, SOMAXCONN);
447 
448 		my_xprt = (SVCXPRT *)svc_tli_create(fd, nconf, &taddr,
449 		    RPC_MAXDATASIZE, RPC_MAXDATASIZE);
450 		if (my_xprt == NULL) {
451 		    syslog(LOG_ERR, "%s: could not create service",
452 			nconf->nc_netid);
453 		    goto error;
454 		}
455 	    }
456 	    if (!bound)
457 		return 1;
458 	} else {
459 	    oldmask = umask(S_IXUSR|S_IXGRP|S_IXOTH);
460 	    if (bind(fd, sa, addrlen) < 0) {
461 		syslog(LOG_ERR, "cannot bind %s: %m", nconf->nc_netid);
462 		if (res != NULL)
463 		    freeaddrinfo(res);
464 		return 1;
465 	    }
466 	    umask(oldmask);
467 
468 	    /* Copy the address */
469 	    taddr.addr.len = taddr.addr.maxlen = addrlen;
470 	    taddr.addr.buf = malloc(addrlen);
471 	    if (taddr.addr.buf == NULL) {
472 		syslog(LOG_ERR, "cannot allocate memory for %s address",
473 		    nconf->nc_netid);
474 		if (res != NULL)
475 		    freeaddrinfo(res);
476 		return 1;
477 	    }
478 	    memcpy(taddr.addr.buf, sa, addrlen);
479 #ifdef ND_DEBUG
480 	    if (debugging) {
481 		/* for debugging print out our universal address */
482 		char *uaddr;
483 		struct netbuf nb;
484 
485 		nb.buf = sa;
486 		nb.len = nb.maxlen = sa->sa_len;
487 		uaddr = taddr2uaddr(nconf, &nb);
488 		fprintf(stderr, "rpcbind : my address is %s\n", uaddr);
489 		free(uaddr);
490 	    }
491 #endif
492 
493 	    if (nconf->nc_semantics != NC_TPI_CLTS)
494 		listen(fd, SOMAXCONN);
495 
496 	    my_xprt = (SVCXPRT *)svc_tli_create(fd, nconf, &taddr,
497 		RPC_MAXDATASIZE, RPC_MAXDATASIZE);
498 	    if (my_xprt == NULL) {
499 		syslog(LOG_ERR, "%s: could not create service",
500 		    nconf->nc_netid);
501 		goto error;
502 	    }
503 	}
504 
505 #ifdef PORTMAP
506 	/*
507 	 * Register both the versions for tcp/ip, udp/ip and local.
508 	 */
509 	if ((strcmp(nconf->nc_protofmly, NC_INET) == 0 &&
510 		(strcmp(nconf->nc_proto, NC_TCP) == 0 ||
511 		strcmp(nconf->nc_proto, NC_UDP) == 0)) ||
512 		(strcmp(nconf->nc_netid, "unix") == 0) ||
513 		(strcmp(nconf->nc_netid, "local") == 0)) {
514 		struct pmaplist *pml;
515 
516 		if (!svc_register(my_xprt, PMAPPROG, PMAPVERS,
517 			pmap_service, 0)) {
518 			syslog(LOG_ERR, "could not register on %s",
519 					nconf->nc_netid);
520 			goto error;
521 		}
522 		pml = malloc(sizeof (struct pmaplist));
523 		if (pml == NULL) {
524 			syslog(LOG_ERR, "no memory!");
525 			exit(1);
526 		}
527 		pml->pml_map.pm_prog = PMAPPROG;
528 		pml->pml_map.pm_vers = PMAPVERS;
529 		pml->pml_map.pm_port = PMAPPORT;
530 		if (strcmp(nconf->nc_proto, NC_TCP) == 0) {
531 			if (tcptrans[0]) {
532 				syslog(LOG_ERR,
533 				"cannot have more than one TCP transport");
534 				goto error;
535 			}
536 			tcptrans = strdup(nconf->nc_netid);
537 			pml->pml_map.pm_prot = IPPROTO_TCP;
538 
539 			/* Let's snarf the universal address */
540 			/* "h1.h2.h3.h4.p1.p2" */
541 			tcp_uaddr = taddr2uaddr(nconf, &taddr.addr);
542 		} else if (strcmp(nconf->nc_proto, NC_UDP) == 0) {
543 			if (udptrans[0]) {
544 				syslog(LOG_ERR,
545 				"cannot have more than one UDP transport");
546 				goto error;
547 			}
548 			udptrans = strdup(nconf->nc_netid);
549 			pml->pml_map.pm_prot = IPPROTO_UDP;
550 
551 			/* Let's snarf the universal address */
552 			/* "h1.h2.h3.h4.p1.p2" */
553 			udp_uaddr = taddr2uaddr(nconf, &taddr.addr);
554 		} else if (strcmp(nconf->nc_netid, "local") == 0)
555 			pml->pml_map.pm_prot = IPPROTO_ST;
556 		else if (strcmp(nconf->nc_netid, "unix") == 0)
557 			pml->pml_map.pm_prot = IPPROTO_ST;
558 		pml->pml_next = list_pml;
559 		list_pml = pml;
560 
561 		/* Add version 3 information */
562 		pml = malloc(sizeof (struct pmaplist));
563 		if (pml == NULL) {
564 			syslog(LOG_ERR, "no memory!");
565 			exit(1);
566 		}
567 		pml->pml_map = list_pml->pml_map;
568 		pml->pml_map.pm_vers = RPCBVERS;
569 		pml->pml_next = list_pml;
570 		list_pml = pml;
571 
572 		/* Add version 4 information */
573 		pml = malloc (sizeof (struct pmaplist));
574 		if (pml == NULL) {
575 			syslog(LOG_ERR, "no memory!");
576 			exit(1);
577 		}
578 		pml->pml_map = list_pml->pml_map;
579 		pml->pml_map.pm_vers = RPCBVERS4;
580 		pml->pml_next = list_pml;
581 		list_pml = pml;
582 
583 		/* Also add version 2 stuff to rpcbind list */
584 		rbllist_add(PMAPPROG, PMAPVERS, nconf, &taddr.addr);
585 	}
586 #endif
587 
588 	/* version 3 registration */
589 	if (!svc_reg(my_xprt, RPCBPROG, RPCBVERS, rpcb_service_3, NULL)) {
590 		syslog(LOG_ERR, "could not register %s version 3",
591 				nconf->nc_netid);
592 		goto error;
593 	}
594 	rbllist_add(RPCBPROG, RPCBVERS, nconf, &taddr.addr);
595 
596 	/* version 4 registration */
597 	if (!svc_reg(my_xprt, RPCBPROG, RPCBVERS4, rpcb_service_4, NULL)) {
598 		syslog(LOG_ERR, "could not register %s version 4",
599 				nconf->nc_netid);
600 		goto error;
601 	}
602 	rbllist_add(RPCBPROG, RPCBVERS4, nconf, &taddr.addr);
603 
604 	/* decide if bound checking works for this transport */
605 	status = add_bndlist(nconf, &taddr.addr);
606 #ifdef BIND_DEBUG
607 	if (debugging) {
608 		if (status < 0) {
609 			fprintf(stderr, "Error in finding bind status for %s\n",
610 				nconf->nc_netid);
611 		} else if (status == 0) {
612 			fprintf(stderr, "check binding for %s\n",
613 				nconf->nc_netid);
614 		} else if (status > 0) {
615 			fprintf(stderr, "No check binding for %s\n",
616 				nconf->nc_netid);
617 		}
618 	}
619 #endif
620 	/*
621 	 * rmtcall only supported on CLTS transports for now.
622 	 */
623 	if (nconf->nc_semantics == NC_TPI_CLTS) {
624 		status = create_rmtcall_fd(nconf);
625 
626 #ifdef BIND_DEBUG
627 		if (debugging) {
628 			if (status < 0) {
629 				fprintf(stderr,
630 				    "Could not create rmtcall fd for %s\n",
631 					nconf->nc_netid);
632 			} else {
633 				fprintf(stderr, "rmtcall fd for %s is %d\n",
634 					nconf->nc_netid, status);
635 			}
636 		}
637 #endif
638 	}
639 	return (0);
640 error:
641 	close(fd);
642 	return (1);
643 }
644 
645 static void
646 rbllist_add(rpcprog_t prog, rpcvers_t vers, struct netconfig *nconf,
647 	    struct netbuf *addr)
648 {
649 	rpcblist_ptr rbl;
650 
651 	rbl = malloc(sizeof (rpcblist));
652 	if (rbl == NULL) {
653 		syslog(LOG_ERR, "no memory!");
654 		exit(1);
655 	}
656 
657 	rbl->rpcb_map.r_prog = prog;
658 	rbl->rpcb_map.r_vers = vers;
659 	rbl->rpcb_map.r_netid = strdup(nconf->nc_netid);
660 	rbl->rpcb_map.r_addr = taddr2uaddr(nconf, addr);
661 	rbl->rpcb_map.r_owner = strdup(superuser);
662 	rbl->rpcb_next = list_rbl;	/* Attach to global list */
663 	list_rbl = rbl;
664 }
665 
666 /*
667  * Catch the signal and die
668  */
669 static void
670 terminate(int dummy __unused)
671 {
672 	close(rpcbindlockfd);
673 #ifdef WARMSTART
674 	syslog(LOG_ERR,
675 		"rpcbind terminating on signal. Restart with \"rpcbind -w\"");
676 	write_warmstart();	/* Dump yourself */
677 #endif
678 	exit(2);
679 }
680 
681 void
682 rpcbind_abort(void)
683 {
684 #ifdef WARMSTART
685 	write_warmstart();	/* Dump yourself */
686 #endif
687 	abort();
688 }
689 
690 /* get command line options */
691 static void
692 parseargs(int argc, char *argv[])
693 {
694 	int c;
695 
696 #ifdef WARMSTART
697 #define	WSOP	"w"
698 #else
699 #define	WSOP	""
700 #endif
701 	while ((c = getopt(argc, argv, "6adh:iLls" WSOP)) != -1) {
702 		switch (c) {
703 		case '6':
704 			ipv6_only = 1;
705 			break;
706 		case 'a':
707 			doabort = 1;	/* when debugging, do an abort on */
708 			break;		/* errors; for rpcbind developers */
709 					/* only! */
710 		case 'd':
711 			debugging = 1;
712 			break;
713 		case 'h':
714 			++nhosts;
715 			hosts = realloc(hosts, nhosts * sizeof(char *));
716 			if (hosts == NULL)
717 				errx(1, "Out of memory");
718 			hosts[nhosts - 1] = strdup(optarg);
719 			if (hosts[nhosts - 1] == NULL)
720 				errx(1, "Out of memory");
721 			break;
722 		case 'i':
723 			insecure = 1;
724 			break;
725 		case 'L':
726 			oldstyle_local = 1;
727 			break;
728 		case 'l':
729 			verboselog = 1;
730 			break;
731 		case 's':
732 			runasdaemon = 1;
733 			break;
734 #ifdef WARMSTART
735 		case 'w':
736 			warmstart = 1;
737 			break;
738 #endif
739 		default:	/* error */
740 			fprintf(stderr,
741 			    "usage: rpcbind [-6adiLls%s] [-h bindip]\n",
742 			    WSOP);
743 			exit (1);
744 		}
745 	}
746 	if (doabort && !debugging) {
747 	    fprintf(stderr,
748 		"-a (abort) specified without -d (debugging) -- ignored.\n");
749 	    doabort = 0;
750 	}
751 #undef WSOP
752 }
753 
754 void
755 reap(int dummy __unused)
756 {
757 	int save_errno = errno;
758 
759 	while (wait3(NULL, WNOHANG, NULL) > 0)
760 		;
761 	errno = save_errno;
762 }
763 
764 void
765 toggle_verboselog(int dummy __unused)
766 {
767 	verboselog = !verboselog;
768 }
769