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 static char **hosts, *svcport_str = NULL;
66 static int nhosts = 0;
67 static int xcreated = 0;
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;
92 int maxrec = RPC_MAXDATASIZE;
93 int attempt_cnt, port_len, port_pos, ret;
96 while ((ch = getopt(argc, argv, "dh:p:")) != -1)
104 hosts_bak = realloc(hosts, nhosts * sizeof(char *));
105 if (hosts_bak == NULL) {
107 for (i = 0; i < nhosts; i++)
114 hosts[nhosts - 1] = strdup(optarg);
115 if (hosts[nhosts - 1] == NULL) {
116 for (i = 0; i < (nhosts - 1); i++)
124 svcport = (in_port_t)strtoul(optarg, &endptr, 10);
125 if (endptr == NULL || *endptr != '\0' || svcport == 0 ||
126 svcport >= IPPORT_MAX)
129 svcport_str = strdup(optarg);
137 (void)rpcb_unset(SM_PROG, SM_VERS, NULL);
140 * Check if IPv6 support is present.
142 s = socket(AF_INET6, SOCK_DGRAM, IPPROTO_UDP);
148 rpc_control(RPC_SVC_CONNMAXREC_SET, &maxrec);
151 * If no hosts were specified, add a wildcard entry to bind to
152 * INADDR_ANY. Otherwise make sure 127.0.0.1 and ::1 are added to the
156 hosts = malloc(sizeof(char *));
160 hosts[0] = strdup("*");
165 hosts_bak = realloc(hosts, (nhosts + 2) *
167 if (hosts_bak == NULL) {
168 for (i = 0; i < nhosts; i++)
176 hosts[nhosts - 2] = strdup("::1");
178 hosts_bak = realloc(hosts, (nhosts + 1) * sizeof(char *));
179 if (hosts_bak == NULL) {
180 for (i = 0; i < nhosts; i++)
190 hosts[nhosts - 1] = strdup("127.0.0.1");
198 nc_handle = setnetconfig();
199 while ((nconf = getnetconfig(nc_handle))) {
200 /* We want to listen only on udp6, tcp6, udp, tcp transports */
201 if (nconf->nc_flag & NC_VISIBLE) {
202 /* Skip if there's no IPv6 support */
203 if (have_v6 == 0 && strcmp(nconf->nc_protofmly, "inet6") == 0) {
206 ret = create_service(nconf);
208 /* Ignore this call */
212 * Failed to bind port, so close off
213 * all sockets created and try again
214 * if the port# was dynamically
215 * assigned via bind(2).
218 if (mallocd_svcport != 0 &&
219 attempt_cnt < GETPORT_MAXTRY) {
226 "bindresvport_sa: %m");
230 /* Start over at the first service. */
234 nc_handle = setnetconfig();
236 } else if (mallocd_svcport != 0 &&
237 attempt_cnt == GETPORT_MAXTRY) {
239 * For the last attempt, allow
240 * different port #s for each nconf
241 * by saving the svcport_str and
242 * setting it back to NULL.
244 port_list = realloc(port_list,
245 (port_len + 1) * sizeof(char *));
246 if (port_list == NULL)
248 port_list[port_len++] = svcport_str;
257 * Successfully bound the ports, so call complete_service() to
258 * do the rest of the setup on the service(s).
262 nc_handle = setnetconfig();
263 while ((nconf = getnetconfig(nc_handle))) {
264 /* We want to listen only on udp6, tcp6, udp, tcp transports */
265 if (nconf->nc_flag & NC_VISIBLE) {
266 /* Skip if there's no IPv6 support */
267 if (have_v6 == 0 && strcmp(nconf->nc_protofmly, "inet6") == 0) {
269 } else if (port_list != NULL) {
270 if (port_pos >= port_len) {
271 syslog(LOG_ERR, "too many port#s");
274 complete_service(nconf, port_list[port_pos++]);
276 complete_service(nconf, svcport_str);
279 endnetconfig(nc_handle);
281 if (port_list != NULL) {
282 for (port_pos = 0; port_pos < port_len; port_pos++)
283 free(port_list[port_pos]);
287 init_file("/var/db/statd.status");
289 /* Note that it is NOT sensible to run this program from inetd - the */
290 /* protocol assumes that it will run immediately at boot time. */
292 openlog("rpc.statd", 0, LOG_DAEMON);
293 if (debug) syslog(LOG_INFO, "Starting - debug enabled");
294 else syslog(LOG_INFO, "Starting");
296 /* Install signal handler to collect exit status of child processes */
297 sa.sa_handler = handle_sigchld;
298 sigemptyset(&sa.sa_mask);
299 sigaddset(&sa.sa_mask, SIGCHLD);
300 sa.sa_flags = SA_RESTART;
301 sigaction(SIGCHLD, &sa, NULL);
303 /* Initialisation now complete - start operating */
304 notify_hosts(); /* Forks a process (if necessary) to do the */
305 /* SM_NOTIFY calls, which may be slow. */
307 svc_run(); /* Should never return */
312 * This routine creates and binds sockets on the appropriate
313 * addresses. It gets called one time for each transport.
314 * It returns 0 upon success, 1 for ingore the call and -1 to indicate
315 * bind failed with EADDRINUSE.
316 * Any file descriptors that have been created are stored in sock_fd and
317 * the total count of them is maintained in sock_fdcnt.
320 create_service(struct netconfig *nconf)
322 struct addrinfo hints, *res = NULL;
323 struct sockaddr_in *sin;
324 struct sockaddr_in6 *sin6;
325 struct __rpc_sockinfo si;
330 u_int32_t host_addr[4]; /* IPv4 or IPv6 */
333 if ((nconf->nc_semantics != NC_TPI_CLTS) &&
334 (nconf->nc_semantics != NC_TPI_COTS) &&
335 (nconf->nc_semantics != NC_TPI_COTS_ORD))
336 return (1); /* not my type */
339 * XXX - using RPC library internal functions.
341 if (!__rpc_nconf2sockinfo(nconf, &si)) {
342 syslog(LOG_ERR, "cannot get information for %s",
347 /* Get rpc.statd's address on this transport */
348 memset(&hints, 0, sizeof hints);
349 hints.ai_family = si.si_af;
350 hints.ai_socktype = si.si_socktype;
351 hints.ai_protocol = si.si_proto;
354 * Bind to specific IPs if asked to
357 while (nhostsbak > 0) {
359 sock_fd = realloc(sock_fd, (sock_fdcnt + 1) * sizeof(int));
362 sock_fd[sock_fdcnt++] = -1; /* Set invalid for now. */
364 hints.ai_flags = AI_PASSIVE;
367 * XXX - using RPC library internal functions.
369 if ((fd = __rpc_nconf2fd(nconf)) < 0) {
370 syslog(LOG_ERR, "cannot create socket for %s",
374 switch (hints.ai_family) {
376 if (inet_pton(AF_INET, hosts[nhostsbak],
378 hints.ai_flags |= AI_NUMERICHOST;
381 * Skip if we have an AF_INET6 address.
383 if (inet_pton(AF_INET6, hosts[nhostsbak],
391 if (inet_pton(AF_INET6, hosts[nhostsbak],
393 hints.ai_flags |= AI_NUMERICHOST;
396 * Skip if we have an AF_INET address.
398 if (inet_pton(AF_INET, hosts[nhostsbak],
410 * If no hosts were specified, just bind to INADDR_ANY
412 if (strcmp("*", hosts[nhostsbak]) == 0) {
413 if (svcport_str == NULL) {
414 res = malloc(sizeof(struct addrinfo));
418 res->ai_flags = hints.ai_flags;
419 res->ai_family = hints.ai_family;
420 res->ai_protocol = hints.ai_protocol;
421 switch (res->ai_family) {
423 sin = malloc(sizeof(struct sockaddr_in));
426 sin->sin_family = AF_INET;
427 sin->sin_port = htons(0);
428 sin->sin_addr.s_addr = htonl(INADDR_ANY);
429 res->ai_addr = (struct sockaddr*) sin;
430 res->ai_addrlen = (socklen_t)
431 sizeof(struct sockaddr_in);
434 sin6 = malloc(sizeof(struct sockaddr_in6));
437 sin6->sin6_family = AF_INET6;
438 sin6->sin6_port = htons(0);
439 sin6->sin6_addr = in6addr_any;
440 res->ai_addr = (struct sockaddr*) sin6;
441 res->ai_addrlen = (socklen_t)
442 sizeof(struct sockaddr_in6);
445 syslog(LOG_ERR, "bad addr fam %d",
450 if ((aicode = getaddrinfo(NULL, svcport_str,
451 &hints, &res)) != 0) {
453 "cannot get local address for %s: %s",
455 gai_strerror(aicode));
461 if ((aicode = getaddrinfo(hosts[nhostsbak], svcport_str,
462 &hints, &res)) != 0) {
464 "cannot get local address for %s: %s",
465 nconf->nc_netid, gai_strerror(aicode));
472 sock_fd[sock_fdcnt - 1] = fd;
474 /* Now, attempt the bind. */
475 r = bindresvport_sa(fd, res->ai_addr);
477 if (errno == EADDRINUSE && mallocd_svcport != 0) {
478 if (mallocd_res != 0) {
485 syslog(LOG_ERR, "bindresvport_sa: %m");
489 if (svcport_str == NULL) {
490 svcport_str = malloc(NI_MAXSERV * sizeof(char));
491 if (svcport_str == NULL)
495 if (getnameinfo(res->ai_addr,
496 res->ai_addr->sa_len, NULL, NI_MAXHOST,
497 svcport_str, NI_MAXSERV * sizeof(char),
498 NI_NUMERICHOST | NI_NUMERICSERV))
499 errx(1, "Cannot get port number");
501 if (mallocd_res != 0) {
512 * Called after all the create_service() calls have succeeded, to complete
513 * the setup and registration.
516 complete_service(struct netconfig *nconf, char *port_str)
518 struct addrinfo hints, *res = NULL;
519 struct __rpc_sockinfo si;
520 struct netbuf servaddr;
521 SVCXPRT *transp = NULL;
522 int aicode, fd, nhostsbak;
525 if ((nconf->nc_semantics != NC_TPI_CLTS) &&
526 (nconf->nc_semantics != NC_TPI_COTS) &&
527 (nconf->nc_semantics != NC_TPI_COTS_ORD))
528 return; /* not my type */
531 * XXX - using RPC library internal functions.
533 if (!__rpc_nconf2sockinfo(nconf, &si)) {
534 syslog(LOG_ERR, "cannot get information for %s",
540 while (nhostsbak > 0) {
542 if (sock_fdpos >= sock_fdcnt) {
543 /* Should never happen. */
544 syslog(LOG_ERR, "Ran out of socket fd's");
547 fd = sock_fd[sock_fdpos++];
551 if (nconf->nc_semantics != NC_TPI_CLTS)
552 listen(fd, SOMAXCONN);
554 transp = svc_tli_create(fd, nconf, NULL,
555 RPC_MAXDATASIZE, RPC_MAXDATASIZE);
557 if (transp != (SVCXPRT *) NULL) {
558 if (!svc_register(transp, SM_PROG, SM_VERS,
560 syslog(LOG_ERR, "can't register on %s",
563 if (!svc_reg(transp, SM_PROG, SM_VERS,
566 "can't register %s SM_PROG service",
570 syslog(LOG_WARNING, "can't create %s services",
573 if (registered == 0) {
575 memset(&hints, 0, sizeof hints);
576 hints.ai_flags = AI_PASSIVE;
577 hints.ai_family = si.si_af;
578 hints.ai_socktype = si.si_socktype;
579 hints.ai_protocol = si.si_proto;
582 if ((aicode = getaddrinfo(NULL, port_str, &hints,
584 syslog(LOG_ERR, "cannot get local address: %s",
585 gai_strerror(aicode));
589 servaddr.buf = malloc(res->ai_addrlen);
590 memcpy(servaddr.buf, res->ai_addr, res->ai_addrlen);
591 servaddr.len = res->ai_addrlen;
593 rpcb_set(SM_PROG, SM_VERS, nconf, &servaddr);
602 * Clear out sockets after a failure to bind one of them, so that the
603 * cycle of socket creation/binding can start anew.
606 clearout_service(void)
610 for (i = 0; i < sock_fdcnt; i++) {
611 if (sock_fd[i] >= 0) {
612 shutdown(sock_fd[i], SHUT_RDWR);
621 fprintf(stderr, "usage: rpc.statd [-d] [-h <bindip>] [-p <port>]\n");
625 /* handle_sigchld ---------------------------------------------------------- */
627 Purpose: Catch SIGCHLD and collect process status
629 Notes: No special action required, other than to collect the
630 process status and hence allow the child to die:
631 we only use child processes for asynchronous transmission
632 of SM_NOTIFY to other systems, so it is normal for the
633 children to exit when they have done their work.
636 static void handle_sigchld(int sig __unused)
639 pid = wait4(-1, &status, WNOHANG, (struct rusage*)0);
640 if (!pid) syslog(LOG_ERR, "Phantom SIGCHLD??");
641 else if (status == 0)
643 if (debug) syslog(LOG_DEBUG, "Child %d exited OK", pid);
645 else syslog(LOG_ERR, "Child %d failed with status %d", pid,
646 WEXITSTATUS(status));
650 * Out of memory, fatal
656 syslog(LOG_ERR, "out of memory");