xref: /netbsd-src/share/doc/psd/20.ipctut/ustreamwrite.c (revision 075022b349321510ad14036d70908681ed02f117)
1*075022b3Sagc .\"	$NetBSD: ustreamwrite.c,v 1.3 2003/08/07 10:30:51 agc Exp $
26d400d56Sperry .\"
3d9158b13Scgd .\" Copyright (c) 1986, 1993
4d9158b13Scgd .\"	The Regents of the University of California.  All rights reserved.
5d9158b13Scgd .\"
6d9158b13Scgd .\" Redistribution and use in source and binary forms, with or without
7d9158b13Scgd .\" modification, are permitted provided that the following conditions
8d9158b13Scgd .\" are met:
9d9158b13Scgd .\" 1. Redistributions of source code must retain the above copyright
10d9158b13Scgd .\"    notice, this list of conditions and the following disclaimer.
11d9158b13Scgd .\" 2. Redistributions in binary form must reproduce the above copyright
12d9158b13Scgd .\"    notice, this list of conditions and the following disclaimer in the
13d9158b13Scgd .\"    documentation and/or other materials provided with the distribution.
14*075022b3Sagc .\" 3. Neither the name of the University nor the names of its contributors
15d9158b13Scgd .\"    may be used to endorse or promote products derived from this software
16d9158b13Scgd .\"    without specific prior written permission.
17d9158b13Scgd .\"
18d9158b13Scgd .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
19d9158b13Scgd .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20d9158b13Scgd .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21d9158b13Scgd .\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
22d9158b13Scgd .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23d9158b13Scgd .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24d9158b13Scgd .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25d9158b13Scgd .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26d9158b13Scgd .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27d9158b13Scgd .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28d9158b13Scgd .\" SUCH DAMAGE.
29d9158b13Scgd .\"
30d9158b13Scgd .\"	@(#)ustreamwrite.c	8.1 (Berkeley) 6/8/93
31d9158b13Scgd .\"
32d9158b13Scgd #include <sys/types.h>
33d9158b13Scgd #include <sys/socket.h>
34d9158b13Scgd #include <sys/un.h>
35d9158b13Scgd #include <stdio.h>
36d9158b13Scgd 
37d9158b13Scgd #define DATA "Half a league, half a league . . ."
38d9158b13Scgd 
39d9158b13Scgd /*
40d9158b13Scgd  * This program connects to the socket named in the command line and sends a
41d9158b13Scgd  * one line message to that socket. The form of the command line is
42d9158b13Scgd  * ustreamwrite pathname
43d9158b13Scgd  */
44d9158b13Scgd main(argc, argv)
45d9158b13Scgd 	int argc;
46d9158b13Scgd 	char *argv[];
47d9158b13Scgd {
48d9158b13Scgd 	int sock;
49d9158b13Scgd 	struct sockaddr_un server;
50d9158b13Scgd 	char buf[1024];
51d9158b13Scgd 
52d9158b13Scgd 	/* Create socket */
53d9158b13Scgd 	sock = socket(AF_UNIX, SOCK_STREAM, 0);
54d9158b13Scgd 	if (sock < 0) {
55d9158b13Scgd 		perror("opening stream socket");
56d9158b13Scgd 		exit(1);
57d9158b13Scgd 	}
58d9158b13Scgd 	/* Connect socket using name specified by command line. */
59d9158b13Scgd 	server.sun_family = AF_UNIX;
60d9158b13Scgd 	strcpy(server.sun_path, argv[1]);
61d9158b13Scgd 
62d9158b13Scgd 	if (connect(sock, &server, sizeof(struct sockaddr_un)) < 0) {
63d9158b13Scgd 		close(sock);
64d9158b13Scgd 		perror("connecting stream socket");
65d9158b13Scgd 		exit(1);
66d9158b13Scgd 	}
67d9158b13Scgd 	if (write(sock, DATA, sizeof(DATA)) < 0)
68d9158b13Scgd 		perror("writing on stream socket");
69d9158b13Scgd }
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