t_generic.c

/*-
 * Copyright (c) 2005 Andrey Simonenko
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <stdarg.h>
#include <stdbool.h>

#include "uc_common.h"
#include "t_generic.h"

int
t_generic(int (*client_func)(int), int (*server_func)(int))
{
	int fd, rv, rv_client;

	switch (uc_client_fork()) {
	case 0:
		fd = uc_socket_create();
		if (fd < 0)
			rv = -2;
		else {
			rv = client_func(fd);
			if (uc_socket_close(fd) < 0)
				rv = -2;
		}
		uc_client_exit(rv);
		break;
	case 1:
		fd = uc_socket_create();
		if (fd < 0)
			rv = -2;
		else {
			rv = server_func(fd);
			rv_client = uc_client_wait();
			if (rv == 0 || (rv == -2 && rv_client != 0))
				rv = rv_client;
			if (uc_socket_close(fd) < 0)
				rv = -2;
		}
		break;
	default:
		rv = -2;
	}
	return (rv);
}