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/*-
* Copyright (C) 2005 The FreeBSD Project. 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.
*
* $FreeBSD$
*/
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <err.h>
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
int
main(void)
{
struct sockaddr_in sock;
socklen_t len;
int listen_sock, connect_sock;
u_short port;
/* Shutdown(2) on an invalid file descriptor has to return EBADF. */
if ((shutdown(listen_sock, SHUT_RDWR) != -1) && (errno != EBADF))
errx(-1, "shutdown() for invalid file descriptor does not "
"return EBADF");
listen_sock = socket(PF_INET, SOCK_STREAM, 0);
if (listen_sock == -1)
errx(-1,
"socket(PF_INET, SOCK_STREAM, 0) for listen socket: %s",
strerror(errno));
bzero(&sock, sizeof(sock));
sock.sin_len = sizeof(sock);
sock.sin_family = AF_INET;
sock.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
sock.sin_port = 0;
if (bind(listen_sock, (struct sockaddr *)&sock, sizeof(sock)) < 0)
errx(-1, "bind(%s, %d) for listen socket: %s",
inet_ntoa(sock.sin_addr), sock.sin_port, strerror(errno));
len = sizeof(sock);
if (getsockname(listen_sock, (struct sockaddr *)&sock, &len) < 0)
errx(-1, "getsockname() for listen socket: %s",
strerror(errno));
port = sock.sin_port;
if (listen(listen_sock, -1) < 0)
errx(-1, "listen() for listen socket: %s", strerror(errno));
/* Shutdown(2) on not connected socket has to return ENOTCONN. */
if ((shutdown(listen_sock, SHUT_RDWR) != -1) && (errno != ENOTCONN))
errx(-1, "shutdown(2) for not connected socket does not "
"return ENOTCONN");
connect_sock = socket(PF_INET, SOCK_STREAM, 0);
if (connect_sock == -1)
errx(-1, "socket(PF_INET, SOCK_STREAM, 0) for connect "
"socket: %s", strerror(errno));
bzero(&sock, sizeof(sock));
sock.sin_len = sizeof(sock);
sock.sin_family = AF_INET;
sock.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
sock.sin_port = port;
if (connect(connect_sock, (struct sockaddr *)&sock, sizeof(sock)) < 0)
errx(-1, "connect() for connect socket: %s", strerror(errno));
/* Try to pass an invalid flags. */
if ((shutdown(connect_sock, SHUT_RD - 1) != -1) && (errno != EINVAL))
errx(-1, "shutdown(SHUT_RD - 1) does not return EINVAL");
if ((shutdown(connect_sock, SHUT_RDWR + 1) != -1) && (errno != EINVAL))
errx(-1, "shutdown(SHUT_RDWR + 1) does not return EINVAL");
if (shutdown(connect_sock, SHUT_RD) < 0)
errx(-1, "shutdown(SHUT_RD) for connect socket: %s",
strerror(errno));
if (shutdown(connect_sock, SHUT_WR) < 0)
errx(-1, "shutdown(SHUT_WR) for connect socket: %s",
strerror(errno));
if ((shutdown(connect_sock, SHUT_RDWR) != -1) && (errno != ENOTCONN))
errx(-1, "shutdown(2) for not connected socket does not "
"return ENOTCONN");
close(connect_sock);
close(listen_sock);
return (0);
}
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