test: Add shutdown'ed UDP socket test

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>

test/zdtm/static/Makefile

@@ -32,6 +32,7 @@ TST_NOFILE	:=				\
 		socket_listen6			\
 		socket_udp			\
 		socket6_udp			\
+		socket_udp_shutdown		\
 		sk-freebind			\
 		sk-freebind-false		\
 		socket_udplite			\

test/zdtm/static/socket_udp_shutdown.c

@@ -0,0 +1,128 @@
+#include <stdio.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <string.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <sys/socket.h>
+#include <arpa/inet.h>  /* for sockaddr_in and inet_ntoa() */
+#include <wait.h>
+
+#include "zdtmtst.h"
+
+const char *test_doc	= "static test for UDP shutdown'ed socket";
+const char *test_author	= "Cyrill Gorcunov <gorcunov@virtuozzo.com>";
+
+static int port = 8881;
+
+#define MSG1 "msg1"
+
+int main(int argc, char **argv)
+{
+	socklen_t len = sizeof(struct sockaddr_in);
+	struct sockaddr_in addr1, addr2, addr;
+	int ret, sk1, sk2;
+	char buf[512];
+
+	test_init(argc, argv);
+
+	sk1 = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP);
+	sk2 = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP);
+	if (sk1 < 0 || sk2 < 0) {
+		pr_err("Can't create socket");
+		exit(1);
+		return 1;
+	}
+
+	memset(&addr1, 0, sizeof(addr1));
+	memset(&addr2, 0, sizeof(addr1));
+
+	addr1.sin_family	= AF_INET;
+	addr1.sin_addr.s_addr	= inet_addr("127.0.0.10");
+	addr1.sin_port		= htons(port);
+
+	addr2.sin_family	= AF_INET;
+	addr2.sin_addr.s_addr	= inet_addr("127.0.0.10");
+	addr2.sin_port		= htons(port + 1);
+
+	if (bind(sk1, (struct sockaddr *)&addr1, len) < 0 ||
+	    bind(sk2, (struct sockaddr *)&addr2, len) < 0) {
+		pr_err("Can't bind socket");
+		return 1;
+	}
+
+	if (connect(sk1, (struct sockaddr *)&addr2, len) ||
+	    connect(sk2, (struct sockaddr *)&addr1, len)) {
+		pr_err("Can't connect");
+		return 1;
+	}
+
+	if (shutdown(sk1, SHUT_WR) ||
+	    shutdown(sk2, SHUT_RD)) {
+		pr_err("Can't shutdown\n");
+		return 1;
+	}
+
+	ret = sendto(sk2, MSG1, sizeof(MSG1), 0,
+		     (struct sockaddr *)&addr1, len);
+	if (ret < 0) {
+		pr_perror("Can't send");
+		return 1;
+	}
+
+	ret = recvfrom(sk1, buf, sizeof(buf), 0,
+		       (struct sockaddr *)&addr, &len);
+	if (ret <= 0) {
+		pr_err("Can't receive data");
+		return 1;
+	}
+
+	if (len != sizeof(struct sockaddr_in) || memcmp(&addr2, &addr, len)) {
+		pr_err("Data received from wrong peer");
+		return 1;
+	}
+
+	if (ret != sizeof(MSG1) || memcmp(buf, MSG1, ret)) {
+		pr_err("Wrong message received");
+		return 1;
+	}
+
+	test_daemon();
+	test_waitsig();
+
+	ret = sendto(sk2, MSG1, sizeof(MSG1), 0,
+		     (struct sockaddr *)&addr1, len);
+	if (ret < 0) {
+		pr_perror("Can't send");
+		return 1;
+	}
+
+	ret = recvfrom(sk1, buf, sizeof(buf), 0,
+		       (struct sockaddr *)&addr, &len);
+	if (ret <= 0) {
+		pr_err("Can't receive data");
+		return 1;
+	}
+
+	if (len != sizeof(struct sockaddr_in) || memcmp(&addr2, &addr, len)) {
+		pr_err("Data received from wrong peer");
+		return 1;
+	}
+
+	if (ret != sizeof(MSG1) || memcmp(buf, MSG1, ret)) {
+		pr_err("Wrong message received");
+		return 1;
+	}
+
+	ret = sendto(sk1, MSG1, sizeof(MSG1), 0,
+		     (struct sockaddr *)&addr2, len);
+	if (ret >= 0) {
+		fail("Sent to write-shutdown'ed socket");
+		return 1;
+	}
+
+	pass();
+	return 0;
+}