o Add shutdown(2) regression tests. At the moment we cannot pass

shutdown-on-non connected socket test, kern/84761.

tools/regression/sockets/shutdown/Makefile

@@ -0,0 +1,9 @@
+#
+# $FreeBSD$
+#
+
+PROG=	shutdown
+NO_MAN=	yes
+WARNS?=	2
+
+.include <bsd.prog.mk>

tools/regression/sockets/shutdown/shutdown.c

@@ -0,0 +1,115 @@
+/*-
+ * 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);
+}