xref: /freebsd/lib/libc/rpc/svc_run.c (revision 5e3190f700637fcfc1a52daeaa4a031fdd2557c7)
1 /*	$NetBSD: svc_run.c,v 1.17 2000/07/06 03:10:35 christos Exp $	*/
2 
3 /*-
4  * SPDX-License-Identifier: BSD-3-Clause
5  *
6  * Copyright (c) 2009, Sun Microsystems, Inc.
7  * All rights reserved.
8  *
9  * Redistribution and use in source and binary forms, with or without
10  * modification, are permitted provided that the following conditions are met:
11  * - Redistributions of source code must retain the above copyright notice,
12  *   this list of conditions and the following disclaimer.
13  * - Redistributions in binary form must reproduce the above copyright notice,
14  *   this list of conditions and the following disclaimer in the documentation
15  *   and/or other materials provided with the distribution.
16  * - Neither the name of Sun Microsystems, Inc. nor the names of its
17  *   contributors may be used to endorse or promote products derived
18  *   from this software without specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21  * AND 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 COPYRIGHT HOLDER OR CONTRIBUTORS BE
24  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30  * POSSIBILITY OF SUCH DAMAGE.
31  */
32 
33 #if defined(LIBC_SCCS) && !defined(lint)
34 static char *sccsid2 = "from: @(#)svc_run.c 1.1 87/10/13 Copyr 1984 Sun Micro";
35 static char *sccsid = "from: @(#)svc_run.c	2.1 88/07/29 4.0 RPCSRC";
36 #endif
37 #include <sys/cdefs.h>
38 /*
39  * This is the rpc server side idle loop
40  * Wait for input, call server program.
41  */
42 #include "namespace.h"
43 #include "reentrant.h"
44 #include <err.h>
45 #include <errno.h>
46 #include <rpc/rpc.h>
47 #include <stdio.h>
48 #include <string.h>
49 #include <unistd.h>
50 #include "un-namespace.h"
51 
52 #include <rpc/rpc.h>
53 #include "rpc_com.h"
54 #include "mt_misc.h"
55 
56 void
57 svc_run(void)
58 {
59 	fd_set readfds, cleanfds;
60 	struct timeval timeout;
61 
62 	timeout.tv_sec = 30;
63 	timeout.tv_usec = 0;
64 
65 	for (;;) {
66 		rwlock_rdlock(&svc_fd_lock);
67 		readfds = svc_fdset;
68 		cleanfds = svc_fdset;
69 		rwlock_unlock(&svc_fd_lock);
70 		switch (_select(svc_maxfd+1, &readfds, NULL, NULL, &timeout)) {
71 		case -1:
72 			FD_ZERO(&readfds);
73 			if (errno == EINTR) {
74 				continue;
75 			}
76 			_warn("svc_run: - select failed");
77 			return;
78 		case 0:
79 			__svc_clean_idle(&cleanfds, 30, FALSE);
80 			continue;
81 		default:
82 			svc_getreqset(&readfds);
83 		}
84 	}
85 }
86 
87 /*
88  *      This function causes svc_run() to exit by telling it that it has no
89  *      more work to do.
90  */
91 void
92 svc_exit(void)
93 {
94 	rwlock_wrlock(&svc_fd_lock);
95 	FD_ZERO(&svc_fdset);
96 	rwlock_unlock(&svc_fd_lock);
97 }
98