3 * Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by Bill Paul.
16 * 4. Neither the name of the author nor the names of any co-contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 static const char rcsid[] =
35 "$FreeBSD: src/usr.sbin/ypserv/yp_main.c,v 1.21.2.3 2002/02/15 00:47:00 des Exp $";
39 * ypserv startup function.
40 * We need out own main() since we have to do some additional work
41 * that rpcgen won't do for us. Most of this file was generated using
42 * rpcgen.new, and later modified.
51 #include <stdlib.h> /* getenv, exit */
52 #include <string.h> /* strcmp */
55 #include <rpc/pmap_clnt.h> /* for pmap_unset */
57 #include <sysent.h> /* getdtablesize, open */
58 #endif /* __cplusplus */
59 #include <sys/socket.h>
60 #include <netinet/in.h>
62 #include "yp_extern.h"
66 #define SIG_PF void(*)(int)
69 #define _RPCSVC_CLOSEDOWN 120
70 int _rpcpmstart; /* Started by a port monitor ? */
71 static int _rpcfdtype;
72 /* Whether Stream or Datagram ? */
73 /* States a server can be in wrt request */
79 extern void ypprog_1(struct svc_req *, register SVCXPRT *);
80 extern void ypprog_2(struct svc_req *, register SVCXPRT *);
81 extern int _rpc_dtablesize(void);
82 extern int _rpcsvcstate; /* Set when a request is serviced */
83 char *progname = "ypserv";
84 char *yp_dir = _PATH_YP;
90 void _msgout(char* msg)
94 syslog(LOG_ERR, "%s", msg);
98 syslog(LOG_ERR, "%s", msg);
110 #endif /* def FD_SETSIZE */
112 int fd_setsize = _rpc_dtablesize();
113 struct timeval timeout;
115 /* Establish the identity of the parent ypserv process. */
123 #endif /* def FD_SETSIZE */
125 FD_SET(resfd, &readfds);
127 timeout.tv_sec = RESOLVER_TIMEOUT;
129 switch (select(fd_setsize, &readfds, NULL, NULL,
132 if (errno == EINTR) {
135 warn("svc_run: - select failed");
138 if (getpid() == yp_pid)
142 if (getpid() == yp_pid) {
143 if (FD_ISSET(resfd, &readfds)) {
145 FD_CLR(resfd, &readfds);
147 svc_getreqset(&readfds);
150 if (yp_pid != getpid())
155 static void unregister()
157 (void) pmap_unset(YPPROG, YPVERS);
158 (void) pmap_unset(YPPROG, YPOLDVERS);
161 static void reaper(sig)
178 if (sig == SIGCHLD) {
179 while (wait3(&status, WNOHANG, NULL) > 0)
191 fprintf(stderr, "usage: ypserv [-h] [-d] [-n] [-p path]\n");
198 if (_rpcsvcstate == _IDLE) {
199 extern fd_set svc_fdset;
203 if (_rpcfdtype == SOCK_DGRAM) {
208 size = getdtablesize();
210 for (i = 0, openfd = 0; i < size && openfd < 2; i++)
211 if (FD_ISSET(i, &svc_fdset))
218 if (_rpcsvcstate == _SERVED)
219 _rpcsvcstate = _IDLE;
221 (void) signal(SIGALRM, (SIG_PF) closedown);
222 (void) alarm(_RPCSVC_CLOSEDOWN/2);
230 register SVCXPRT *transp = NULL;
233 struct sockaddr_in saddr;
234 int asize = sizeof (saddr);
237 while ((ch = getopt(argc, argv, "hdnp:")) != -1) {
240 debug = ypdb_debug = 1;
259 if (getsockname(0, (struct sockaddr *)&saddr, &asize) == 0) {
260 int ssize = sizeof (int);
262 if (saddr.sin_family != AF_INET)
264 if (getsockopt(0, SOL_SOCKET, SO_TYPE,
265 (char *)&_rpcfdtype, &ssize) == -1)
270 openlog("ypserv", LOG_PID, LOG_DAEMON);
274 err(1,"cannot fork");
276 openlog("ypserv", LOG_PID, LOG_DAEMON);
279 (void) pmap_unset(YPPROG, YPVERS);
280 (void) pmap_unset(YPPROG, 1);
283 if ((_rpcfdtype == 0) || (_rpcfdtype == SOCK_DGRAM)) {
284 transp = svcudp_create(sock);
285 if (transp == NULL) {
286 _msgout("cannot create udp service");
291 if (!svc_register(transp, YPPROG, YPOLDVERS, ypprog_1, proto)) {
292 _msgout("unable to register (YPPROG, YPOLDVERS, udp)");
295 if (!svc_register(transp, YPPROG, YPVERS, ypprog_2, proto)) {
296 _msgout("unable to register (YPPROG, YPVERS, udp)");
301 if ((_rpcfdtype == 0) || (_rpcfdtype == SOCK_STREAM)) {
302 transp = svctcp_create(sock, 0, 0);
303 if (transp == NULL) {
304 _msgout("cannot create tcp service");
309 if (!svc_register(transp, YPPROG, YPOLDVERS, ypprog_1, proto)) {
310 _msgout("unable to register (YPPROG, YPOLDVERS, tcp)");
313 if (!svc_register(transp, YPPROG, YPVERS, ypprog_2, proto)) {
314 _msgout("unable to register (YPPROG, YPVERS, tcp)");
319 if (transp == (SVCXPRT *)NULL) {
320 _msgout("could not create a handle");
324 (void) signal(SIGALRM, (SIG_PF) closedown);
325 (void) alarm(_RPCSVC_CLOSEDOWN/2);
328 * Make sure SIGPIPE doesn't blow us away while servicing TCP
331 (void) signal(SIGPIPE, SIG_IGN);
332 (void) signal(SIGCHLD, (SIG_PF) reaper);
333 (void) signal(SIGTERM, (SIG_PF) reaper);
334 (void) signal(SIGINT, (SIG_PF) reaper);
335 (void) signal(SIGHUP, (SIG_PF) reaper);
337 _msgout("svc_run returned");