ctdb-tests: Add basic test to sanity check types in socket marshalling

Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>

1 files changed, 63 insertions, 0 deletions

diff --git a/ctdb/tests/src/system_socket_test.c b/ctdb/tests/src/system_socket_test.c
new file mode 100644
index 00000000000..61dfa3970c1
--- /dev/null
+++ b/ctdb/tests/src/system_socket_test.c
@@ -0,0 +1,63 @@
+/*
+   Raw socket (un) marshalling tests
+
+   Copyright (C) Martin Schwenke  2018
+
+   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 3 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, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <assert.h>
+
+#include "common/system_socket.c"
+
+#include "protocol/protocol_util.h"
+
+static void test_types(void)
+{
+	/*
+	 * We use this struct in the code but don't pack it due to
+	 * portability concerns.  It should have no padding.
+	 */
+	struct {
+		struct ip ip;
+		struct tcphdr tcp;
+	} ip4pkt;
+
+	assert(sizeof(ip4pkt) == sizeof(struct ip) + sizeof(struct tcphdr));
+}
+
+static void usage(const char *prog)
+{
+	fprintf(stderr, "usage: %s <cmd> [<arg> ...]\n", prog);
+	fprintf(stderr, "  commands:\n");
+	fprintf(stderr, "    types\n");
+
+	exit(1);
+}
+
+int main(int argc, char **argv)
+{
+
+	if (argc < 2) {
+		usage(argv[0]);
+	}
+
+	if (strcmp(argv[1], "types") == 0) {
+		test_types();
+	} else {
+		usage(argv[0]);
+	}
+
+	return 0;
+}