xref: /src/share/doc/psd/20.ipctut/udgramread.c

.\" Copyright (c) 1986, 1993
.\"	The Regents of the University of California.  All rights reserved.
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.\"	This product includes software developed by the University of
.\"	California, Berkeley and its contributors.
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.\"	@(#)udgramread.c	8.1 (Berkeley) 6/8/93
.\"
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>

/*
 * In the included file <sys/un.h> a sockaddr_un is defined as follows
 * struct sockaddr_un {
 *	short	sun_family;
 *	char	sun_path[108];
 * };
 */

#include <stdio.h>

#define NAME "socket"

/*
 * This program creates a UNIX domain datagram socket, binds a name to it,
 * then reads from the socket.
 */
main()
{
	int sock, length;
	struct sockaddr_un name;
	char buf[1024];

	/* Create socket from which to read. */
	sock = socket(AF_UNIX, SOCK_DGRAM, 0);
	if (sock < 0) {
		perror("opening datagram socket");
		exit(1);
	}
	/* Create name. */
	name.sun_family = AF_UNIX;
	strcpy(name.sun_path, NAME);
	if (bind(sock, &name, sizeof(struct sockaddr_un))) {
		perror("binding name to datagram socket");
		exit(1);
	}
	printf("socket -->%s\en", NAME);
	/* Read from the socket */
	if (read(sock, buf, 1024) < 0)
		perror("receiving datagram packet");
	printf("-->%s\en", buf);
	close(sock);
	unlink(NAME);
}