Remove __P macros from src/usr.bin and src/usr.sbin.
[dragonfly.git] / usr.sbin / rpc.statd / statd.c
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1/*
2 * Copyright (c) 1995
3 * A.R. Gordon (andrew.gordon@net-tel.co.uk). 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. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed for the FreeBSD project
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.
19 *
20 * THIS SOFTWARE IS PROVIDED BY ANDREW GORDON 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 THE AUTHOR 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
30 * SUCH DAMAGE.
31 *
1de703da 32 * $FreeBSD: src/usr.sbin/rpc.statd/statd.c,v 1.6 1999/10/05 14:40:38 marcel Exp $
2d8a3be7 33 * $DragonFly: src/usr.sbin/rpc.statd/statd.c,v 1.3 2003/11/03 19:31:42 eirikn Exp $
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34 */
35
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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 */
39
40#include <err.h>
41#include <stdio.h>
42#include <stdlib.h>
43#include <rpc/rpc.h>
44#include <rpc/pmap_clnt.h>
45#include <syslog.h>
46#include <sys/types.h>
47#include <sys/wait.h>
48#include <signal.h>
49#include "statd.h"
50
51int debug = 0; /* Controls syslog() calls for debug messages */
52
53extern void sm_prog_1(struct svc_req *rqstp, SVCXPRT *transp);
54static void handle_sigchld();
2d8a3be7 55static void usage(void);
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56
57int
58main(int argc, char **argv)
59{
60 SVCXPRT *transp;
61 struct sigaction sa;
62
63 if (argc > 1)
64 {
65 if (strcmp(argv[1], "-d"))
66 usage();
67 debug = 1;
68 }
69
70 (void)pmap_unset(SM_PROG, SM_VERS);
71
72 transp = svcudp_create(RPC_ANYSOCK);
73 if (transp == NULL)
74 errx(1, "cannot create udp service");
75 if (!svc_register(transp, SM_PROG, SM_VERS, sm_prog_1, IPPROTO_UDP))
76 errx(1, "unable to register (SM_PROG, SM_VERS, udp)");
77
78 transp = svctcp_create(RPC_ANYSOCK, 0, 0);
79 if (transp == NULL)
80 errx(1, "cannot create tcp service");
81 if (!svc_register(transp, SM_PROG, SM_VERS, sm_prog_1, IPPROTO_TCP))
82 errx(1, "unable to register (SM_PROG, SM_VERS, tcp)");
83 init_file("/var/db/statd.status");
84
85 /* Note that it is NOT sensible to run this program from inetd - the */
86 /* protocol assumes that it will run immediately at boot time. */
87 daemon(0, 0);
88 openlog("rpc.statd", 0, LOG_DAEMON);
89 if (debug) syslog(LOG_INFO, "Starting - debug enabled");
90 else syslog(LOG_INFO, "Starting");
91
92 /* Install signal handler to collect exit status of child processes */
93 sa.sa_handler = handle_sigchld;
94 sigemptyset(&sa.sa_mask);
95 sigaddset(&sa.sa_mask, SIGCHLD);
96 sa.sa_flags = SA_RESTART;
97 sigaction(SIGCHLD, &sa, NULL);
98
99 /* Initialisation now complete - start operating */
100 notify_hosts(); /* Forks a process (if necessary) to do the */
101 /* SM_NOTIFY calls, which may be slow. */
102
103 svc_run(); /* Should never return */
104 exit(1);
105}
106
107static void
108usage()
109{
110 fprintf(stderr, "usage: rpc.statd [-d]\n");
111 exit(1);
112}
113
114/* handle_sigchld ---------------------------------------------------------- */
115/*
116 Purpose: Catch SIGCHLD and collect process status
117 Retruns: Nothing.
118 Notes: No special action required, other than to collect the
119 process status and hence allow the child to die:
120 we only use child processes for asynchronous transmission
121 of SM_NOTIFY to other systems, so it is normal for the
122 children to exit when they have done their work.
123*/
124
125static void handle_sigchld(int sig, int code, struct sigcontext *scp)
126{
127 int pid, status;
128 pid = wait4(-1, &status, WNOHANG, (struct rusage*)0);
129 if (!pid) syslog(LOG_ERR, "Phantom SIGCHLD??");
130 else if (status == 0)
131 {
132 if (debug) syslog(LOG_DEBUG, "Child %d exited OK", pid);
133 }
134 else syslog(LOG_ERR, "Child %d failed with status %d", pid,
135 WEXITSTATUS(status));
136}
137