/*
 *  makesock.c - Vytvori AF_UNIX socket a preda ho jinemu programu.
 *
 *  This is an example file for the UNIX - Programming and System
 *  Administration II course.
 *
 *  Copyright (C) 2001  Jan "Yenya" Kasprzak <kas@fi.muni.cz>
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>

/* !^$@! Nekdy neni UNIX_PATH_MAX deklarovano. */
#ifndef UNIX_PATH_MAX
#define UNIX_PATH_MAX 108
#endif

int main(int argc, char **argv)
{
	int s;
	struct sockaddr_un sun;

	if (argc != 3) {
		fprintf(stderr, "Usage: %s sockpath program", *argv);
		return 1;
	}

	if (!(s = socket(AF_UNIX, SOCK_STREAM, 0))) {
		perror("socket()");
		return 1;
	}

	sun.sun_family = AF_UNIX;
	strncpy(sun.sun_path, argv[1], UNIX_PATH_MAX);

	if (bind(s, (struct sockaddr *)&sun, sizeof(sun))) {
		perror("bind()");
		return 1;
	}

	dup2(s, 0);

	execlp(argv[2], argv[2], NULL);
	perror("execlp()");
	return 1;
}