Add __attribute__((__noreturn__)) to various function prototypes in libexec/.
[dragonfly.git] / libexec / rpc.rstatd / rstatd.c
1 /*-
2  * Copyright (c) 1993, John Brezak
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
7  * are met:
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. Neither the name of the University nor the names of its contributors
14  *    may be used to endorse or promote products derived from this software
15  *    without specific prior written permission.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27  * SUCH DAMAGE.
28  *
29  * $FreeBSD: src/libexec/rpc.rstatd/rstatd.c,v 1.8 1999/08/28 00:09:54 peter Exp $
30  */
31
32 #include <stdlib.h>
33 #include <rpc/rpc.h>
34 #include <signal.h>
35 #include <syslog.h>
36 #include <rpcsvc/rstat.h>
37
38 extern void rstat_service();
39
40 int from_inetd = 1;     /* started from inetd ? */
41 int closedown = 20;     /* how long to wait before going dormant */
42
43 void __dead2
44 cleanup(int sig)
45 {
46         (void) rpcb_unset(RSTATPROG, RSTATVERS_TIME, NULL);
47         (void) rpcb_unset(RSTATPROG, RSTATVERS_SWTCH, NULL);
48         (void) rpcb_unset(RSTATPROG, RSTATVERS_ORIG, NULL);
49         exit(0);
50 }
51
52 int
53 main(int argc, char *argv[])
54 {
55         SVCXPRT *transp;
56         int ok;
57         struct sockaddr_storage from;
58         int fromlen;
59
60         if (argc == 2)
61                 closedown = atoi(argv[1]);
62         if (closedown <= 0)
63                 closedown = 20;
64
65         /*
66          * See if inetd started us
67          */
68         fromlen = sizeof(from);
69         if (getsockname(0, (struct sockaddr *)&from, &fromlen) < 0) {
70                 from_inetd = 0;
71         }
72
73         if (!from_inetd) {
74                 daemon(0, 0);
75
76                 (void)rpcb_unset(RSTATPROG, RSTATVERS_TIME, NULL);
77                 (void)rpcb_unset(RSTATPROG, RSTATVERS_SWTCH, NULL);
78                 (void)rpcb_unset(RSTATPROG, RSTATVERS_ORIG, NULL);
79
80                 (void) signal(SIGINT, cleanup);
81                 (void) signal(SIGTERM, cleanup);
82                 (void) signal(SIGHUP, cleanup);
83         }
84
85         openlog("rpc.rstatd", LOG_CONS|LOG_PID, LOG_DAEMON);
86
87         if (from_inetd) {
88                 transp = svc_tli_create(0, NULL, NULL, 0, 0);
89                 if (transp == NULL) {
90                         syslog(LOG_ERR, "cannot create udp service.");
91                         exit(1);
92                 }
93                 ok = svc_reg(transp, RSTATPROG, RSTATVERS_TIME,
94                              rstat_service, NULL);
95         } else
96                 ok = svc_create(rstat_service,
97                                 RSTATPROG, RSTATVERS_TIME, "udp");
98         if (!ok) {
99                 syslog(LOG_ERR, "unable to register (RSTATPROG, RSTATVERS_TIME, %s)", (!from_inetd)?"udp":"(inetd)");
100                 exit(1);
101         }
102         if (from_inetd)
103                 ok = svc_reg(transp, RSTATPROG, RSTATVERS_SWTCH,
104                              rstat_service, NULL);
105         else
106                 ok = svc_create(rstat_service,
107                                 RSTATPROG, RSTATVERS_SWTCH, "udp");
108         if (!ok) {
109                 syslog(LOG_ERR, "unable to register (RSTATPROG, RSTATVERS_SWTCH, %s)", (!from_inetd)?"udp":"(inetd)");
110                 exit(1);
111         }
112         if (from_inetd)
113                 ok = svc_reg(transp, RSTATPROG, RSTATVERS_ORIG,
114                              rstat_service, NULL);
115         else
116                 ok = svc_create(rstat_service,
117                                 RSTATPROG, RSTATVERS_ORIG, "udp");
118         if (!ok) {
119                 syslog(LOG_ERR, "unable to register (RSTATPROG, RSTATVERS_ORIG, %s)", (!from_inetd)?"udp":"(inetd)");
120                 exit(1);
121         }
122
123         svc_run();
124         syslog(LOG_ERR, "svc_run returned");
125         exit(1);
126 }