2 * SPDX-License-Identifier: BSD-4-Clause
5 * A.R. Gordon (andrew.gordon@net-tel.co.uk). All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 * must display the following acknowledgement:
17 * This product includes software developed for the FreeBSD project
18 * 4. Neither the name of the author nor the names of any co-contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY ANDREW GORDON AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 /* main() function for status monitor daemon. Some of the code in this */
37 /* file was generated by running rpcgen /usr/include/rpcsvc/sm_inter.x */
38 /* The actual program logic is in the file procs.c */
40 #include <sys/cdefs.h>
41 __FBSDID("$FreeBSD$");
48 #include <rpc/rpc_com.h>
51 #include <sys/types.h>
52 #include <sys/socket.h>
54 #include <netinet/in.h>
55 #include <arpa/inet.h>
61 #define GETPORT_MAXTRY 20 /* Max tries to get a port # */
63 int debug = 0; /* Controls syslog() calls for debug messages */
65 char **hosts, *svcport_str = NULL;
68 static int mallocd_svcport = 0;
70 static int sock_fdcnt;
71 static int sock_fdpos;
73 static int create_service(struct netconfig *nconf);
74 static void complete_service(struct netconfig *nconf, char *port_str);
75 static void clearout_service(void);
76 static void handle_sigchld(int sig);
77 void out_of_mem(void) __dead2;
79 static void usage(void) __dead2;
82 main(int argc, char **argv)
85 struct netconfig *nconf;
89 char *endptr, **hosts_bak;
91 int maxrec = RPC_MAXDATASIZE;
92 int attempt_cnt, port_len, port_pos, ret;
95 while ((ch = getopt(argc, argv, "dh:p:")) != -1)
103 hosts_bak = realloc(hosts, nhosts * sizeof(char *));
104 if (hosts_bak == NULL) {
106 for (i = 0; i < nhosts; i++)
113 hosts[nhosts - 1] = strdup(optarg);
114 if (hosts[nhosts - 1] == NULL) {
115 for (i = 0; i < (nhosts - 1); i++)
123 svcport = (in_port_t)strtoul(optarg, &endptr, 10);
124 if (endptr == NULL || *endptr != '\0' || svcport == 0 ||
125 svcport >= IPPORT_MAX)
128 svcport_str = strdup(optarg);
136 (void)rpcb_unset(SM_PROG, SM_VERS, NULL);
139 * Check if IPv6 support is present.
141 s = socket(AF_INET6, SOCK_DGRAM, IPPROTO_UDP);
147 rpc_control(RPC_SVC_CONNMAXREC_SET, &maxrec);
150 * If no hosts were specified, add a wildcard entry to bind to
151 * INADDR_ANY. Otherwise make sure 127.0.0.1 and ::1 are added to the
155 hosts = malloc(sizeof(char *));
164 hosts_bak = realloc(hosts, (nhosts + 2) *
166 if (hosts_bak == NULL) {
167 for (i = 0; i < nhosts; i++)
175 hosts[nhosts - 2] = "::1";
177 hosts_bak = realloc(hosts, (nhosts + 1) * sizeof(char *));
178 if (hosts_bak == NULL) {
179 for (i = 0; i < nhosts; i++)
189 hosts[nhosts - 1] = "127.0.0.1";
197 nc_handle = setnetconfig();
198 while ((nconf = getnetconfig(nc_handle))) {
199 /* We want to listen only on udp6, tcp6, udp, tcp transports */
200 if (nconf->nc_flag & NC_VISIBLE) {
201 /* Skip if there's no IPv6 support */
202 if (have_v6 == 0 && strcmp(nconf->nc_protofmly, "inet6") == 0) {
205 ret = create_service(nconf);
207 /* Ignore this call */
211 * Failed to bind port, so close off
212 * all sockets created and try again
213 * if the port# was dynamically
214 * assigned via bind(2).
217 if (mallocd_svcport != 0 &&
218 attempt_cnt < GETPORT_MAXTRY) {
225 "bindresvport_sa: %m");
229 /* Start over at the first service. */
233 nc_handle = setnetconfig();
235 } else if (mallocd_svcport != 0 &&
236 attempt_cnt == GETPORT_MAXTRY) {
238 * For the last attempt, allow
239 * different port #s for each nconf
240 * by saving the svcport_str and
241 * setting it back to NULL.
243 port_list = realloc(port_list,
244 (port_len + 1) * sizeof(char *));
245 if (port_list == NULL)
247 port_list[port_len++] = svcport_str;
256 * Successfully bound the ports, so call complete_service() to
257 * do the rest of the setup on the service(s).
261 nc_handle = setnetconfig();
262 while ((nconf = getnetconfig(nc_handle))) {
263 /* We want to listen only on udp6, tcp6, udp, tcp transports */
264 if (nconf->nc_flag & NC_VISIBLE) {
265 /* Skip if there's no IPv6 support */
266 if (have_v6 == 0 && strcmp(nconf->nc_protofmly, "inet6") == 0) {
268 } else if (port_list != NULL) {
269 if (port_pos >= port_len) {
270 syslog(LOG_ERR, "too many port#s");
273 complete_service(nconf, port_list[port_pos++]);
275 complete_service(nconf, svcport_str);
278 endnetconfig(nc_handle);
280 if (port_list != NULL) {
281 for (port_pos = 0; port_pos < port_len; port_pos++)
282 free(port_list[port_pos]);
286 init_file("/var/db/statd.status");
288 /* Note that it is NOT sensible to run this program from inetd - the */
289 /* protocol assumes that it will run immediately at boot time. */
291 openlog("rpc.statd", 0, LOG_DAEMON);
292 if (debug) syslog(LOG_INFO, "Starting - debug enabled");
293 else syslog(LOG_INFO, "Starting");
295 /* Install signal handler to collect exit status of child processes */
296 sa.sa_handler = handle_sigchld;
297 sigemptyset(&sa.sa_mask);
298 sigaddset(&sa.sa_mask, SIGCHLD);
299 sa.sa_flags = SA_RESTART;
300 sigaction(SIGCHLD, &sa, NULL);
302 /* Initialisation now complete - start operating */
303 notify_hosts(); /* Forks a process (if necessary) to do the */
304 /* SM_NOTIFY calls, which may be slow. */
306 svc_run(); /* Should never return */
311 * This routine creates and binds sockets on the appropriate
312 * addresses. It gets called one time for each transport.
313 * It returns 0 upon success, 1 for ingore the call and -1 to indicate
314 * bind failed with EADDRINUSE.
315 * Any file descriptors that have been created are stored in sock_fd and
316 * the total count of them is maintained in sock_fdcnt.
319 create_service(struct netconfig *nconf)
321 struct addrinfo hints, *res = NULL;
322 struct sockaddr_in *sin;
323 struct sockaddr_in6 *sin6;
324 struct __rpc_sockinfo si;
329 u_int32_t host_addr[4]; /* IPv4 or IPv6 */
332 if ((nconf->nc_semantics != NC_TPI_CLTS) &&
333 (nconf->nc_semantics != NC_TPI_COTS) &&
334 (nconf->nc_semantics != NC_TPI_COTS_ORD))
335 return (1); /* not my type */
338 * XXX - using RPC library internal functions.
340 if (!__rpc_nconf2sockinfo(nconf, &si)) {
341 syslog(LOG_ERR, "cannot get information for %s",
346 /* Get rpc.statd's address on this transport */
347 memset(&hints, 0, sizeof hints);
348 hints.ai_family = si.si_af;
349 hints.ai_socktype = si.si_socktype;
350 hints.ai_protocol = si.si_proto;
353 * Bind to specific IPs if asked to
356 while (nhostsbak > 0) {
358 sock_fd = realloc(sock_fd, (sock_fdcnt + 1) * sizeof(int));
361 sock_fd[sock_fdcnt++] = -1; /* Set invalid for now. */
363 hints.ai_flags = AI_PASSIVE;
366 * XXX - using RPC library internal functions.
368 if ((fd = __rpc_nconf2fd(nconf)) < 0) {
369 syslog(LOG_ERR, "cannot create socket for %s",
373 switch (hints.ai_family) {
375 if (inet_pton(AF_INET, hosts[nhostsbak],
377 hints.ai_flags |= AI_NUMERICHOST;
380 * Skip if we have an AF_INET6 address.
382 if (inet_pton(AF_INET6, hosts[nhostsbak],
390 if (inet_pton(AF_INET6, hosts[nhostsbak],
392 hints.ai_flags |= AI_NUMERICHOST;
395 * Skip if we have an AF_INET address.
397 if (inet_pton(AF_INET, hosts[nhostsbak],
409 * If no hosts were specified, just bind to INADDR_ANY
411 if (strcmp("*", hosts[nhostsbak]) == 0) {
412 if (svcport_str == NULL) {
413 res = malloc(sizeof(struct addrinfo));
417 res->ai_flags = hints.ai_flags;
418 res->ai_family = hints.ai_family;
419 res->ai_protocol = hints.ai_protocol;
420 switch (res->ai_family) {
422 sin = malloc(sizeof(struct sockaddr_in));
425 sin->sin_family = AF_INET;
426 sin->sin_port = htons(0);
427 sin->sin_addr.s_addr = htonl(INADDR_ANY);
428 res->ai_addr = (struct sockaddr*) sin;
429 res->ai_addrlen = (socklen_t)
430 sizeof(struct sockaddr_in);
433 sin6 = malloc(sizeof(struct sockaddr_in6));
436 sin6->sin6_family = AF_INET6;
437 sin6->sin6_port = htons(0);
438 sin6->sin6_addr = in6addr_any;
439 res->ai_addr = (struct sockaddr*) sin6;
440 res->ai_addrlen = (socklen_t)
441 sizeof(struct sockaddr_in6);
444 syslog(LOG_ERR, "bad addr fam %d",
449 if ((aicode = getaddrinfo(NULL, svcport_str,
450 &hints, &res)) != 0) {
452 "cannot get local address for %s: %s",
454 gai_strerror(aicode));
460 if ((aicode = getaddrinfo(hosts[nhostsbak], svcport_str,
461 &hints, &res)) != 0) {
463 "cannot get local address for %s: %s",
464 nconf->nc_netid, gai_strerror(aicode));
471 sock_fd[sock_fdcnt - 1] = fd;
473 /* Now, attempt the bind. */
474 r = bindresvport_sa(fd, res->ai_addr);
476 if (errno == EADDRINUSE && mallocd_svcport != 0) {
477 if (mallocd_res != 0) {
484 syslog(LOG_ERR, "bindresvport_sa: %m");
488 if (svcport_str == NULL) {
489 svcport_str = malloc(NI_MAXSERV * sizeof(char));
490 if (svcport_str == NULL)
494 if (getnameinfo(res->ai_addr,
495 res->ai_addr->sa_len, NULL, NI_MAXHOST,
496 svcport_str, NI_MAXSERV * sizeof(char),
497 NI_NUMERICHOST | NI_NUMERICSERV))
498 errx(1, "Cannot get port number");
500 if (mallocd_res != 0) {
511 * Called after all the create_service() calls have succeeded, to complete
512 * the setup and registration.
515 complete_service(struct netconfig *nconf, char *port_str)
517 struct addrinfo hints, *res = NULL;
518 struct __rpc_sockinfo si;
519 struct netbuf servaddr;
520 SVCXPRT *transp = NULL;
521 int aicode, fd, nhostsbak;
524 if ((nconf->nc_semantics != NC_TPI_CLTS) &&
525 (nconf->nc_semantics != NC_TPI_COTS) &&
526 (nconf->nc_semantics != NC_TPI_COTS_ORD))
527 return; /* not my type */
530 * XXX - using RPC library internal functions.
532 if (!__rpc_nconf2sockinfo(nconf, &si)) {
533 syslog(LOG_ERR, "cannot get information for %s",
539 while (nhostsbak > 0) {
541 if (sock_fdpos >= sock_fdcnt) {
542 /* Should never happen. */
543 syslog(LOG_ERR, "Ran out of socket fd's");
546 fd = sock_fd[sock_fdpos++];
550 if (nconf->nc_semantics != NC_TPI_CLTS)
551 listen(fd, SOMAXCONN);
553 transp = svc_tli_create(fd, nconf, NULL,
554 RPC_MAXDATASIZE, RPC_MAXDATASIZE);
556 if (transp != (SVCXPRT *) NULL) {
557 if (!svc_register(transp, SM_PROG, SM_VERS,
559 syslog(LOG_ERR, "can't register on %s",
562 if (!svc_reg(transp, SM_PROG, SM_VERS,
565 "can't register %s SM_PROG service",
569 syslog(LOG_WARNING, "can't create %s services",
572 if (registered == 0) {
574 memset(&hints, 0, sizeof hints);
575 hints.ai_flags = AI_PASSIVE;
576 hints.ai_family = si.si_af;
577 hints.ai_socktype = si.si_socktype;
578 hints.ai_protocol = si.si_proto;
581 if ((aicode = getaddrinfo(NULL, port_str, &hints,
583 syslog(LOG_ERR, "cannot get local address: %s",
584 gai_strerror(aicode));
588 servaddr.buf = malloc(res->ai_addrlen);
589 memcpy(servaddr.buf, res->ai_addr, res->ai_addrlen);
590 servaddr.len = res->ai_addrlen;
592 rpcb_set(SM_PROG, SM_VERS, nconf, &servaddr);
601 * Clear out sockets after a failure to bind one of them, so that the
602 * cycle of socket creation/binding can start anew.
605 clearout_service(void)
609 for (i = 0; i < sock_fdcnt; i++) {
610 if (sock_fd[i] >= 0) {
611 shutdown(sock_fd[i], SHUT_RDWR);
620 fprintf(stderr, "usage: rpc.statd [-d] [-h <bindip>] [-p <port>]\n");
624 /* handle_sigchld ---------------------------------------------------------- */
626 Purpose: Catch SIGCHLD and collect process status
628 Notes: No special action required, other than to collect the
629 process status and hence allow the child to die:
630 we only use child processes for asynchronous transmission
631 of SM_NOTIFY to other systems, so it is normal for the
632 children to exit when they have done their work.
635 static void handle_sigchld(int sig __unused)
638 pid = wait4(-1, &status, WNOHANG, (struct rusage*)0);
639 if (!pid) syslog(LOG_ERR, "Phantom SIGCHLD??");
640 else if (status == 0)
642 if (debug) syslog(LOG_DEBUG, "Child %d exited OK", pid);
644 else syslog(LOG_ERR, "Child %d failed with status %d", pid,
645 WEXITSTATUS(status));
649 * Out of memory, fatal
655 syslog(LOG_ERR, "out of memory");