1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22 /*
23 * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 #pragma ident "%Z%%M% %I% %E% SMI"
28
29 /*
30 * discard inetd service - both stream and dgram based.
31 */
32
33 #include <sys/types.h>
34 #include <sys/socket.h>
35 #include <unistd.h>
36 #include <stdio.h>
37 #include <stdlib.h>
38 #include <netinet/in.h>
39 #include <inetsvc.h>
40
41
42 static void
discard_stream(int s,char * argv[])43 discard_stream(int s, char *argv[])
44 {
45 char buffer[BUFSIZ];
46
47 setproctitle("discard", s, argv);
48 while (read(s, buffer, sizeof (buffer)) > 0)
49 ;
50 }
51
52 /* ARGSUSED0 */
53 static void
noop(int s,const struct sockaddr * sap,int sa_size,const void * buf,size_t sz)54 noop(int s, const struct sockaddr *sap, int sa_size, const void *buf, size_t sz)
55 {
56 }
57
58 int
main(int argc,char * argv[])59 main(int argc, char *argv[])
60 {
61 opterr = 0; /* disable getopt error msgs */
62 switch (getopt(argc, argv, "ds")) {
63 case 'd':
64 /*
65 * We don't need to do any work since dg_template consumes the
66 * datagrams for us, and we just ignore them.
67 */
68 dg_template(noop, STDIN_FILENO, NULL, 0);
69 break;
70 case 's':
71 discard_stream(STDIN_FILENO, argv);
72 break;
73 default:
74 return (1);
75 }
76
77 return (0);
78 }
79