From: Masatake YAMATO <yamato@redhat.com>
Date: Tue, 13 Jun 2017 08:26:45 +0000 (+0900)
Subject: tests: check decoding of NETLINK_GENERIC message types
X-Git-Tag: v4.18~62
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=c7f371df30f8e9c4f5b7daa8428bf9c956485c78;p=strace

tests: check decoding of NETLINK_GENERIC message types

* tests/netlink_generic.c: New file.
* tests/gen_tests.in (netlink_generic): New entry.
* tests/pure_executables.list: Add netlink_generic.
* tests/.gitignore: Likewise.

Signed-off-by: Masatake YAMATO <yamato@redhat.com>
Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
---

diff --git a/tests/.gitignore b/tests/.gitignore
index de9fccd5..bed18d3b 100644
--- a/tests/.gitignore
+++ b/tests/.gitignore
@@ -198,6 +198,7 @@ net-yy-inet
 net-yy-netlink
 net-yy-unix
 netlink_audit
+netlink_generic
 netlink_inet_diag
 netlink_netfilter
 netlink_netlink_diag
diff --git a/tests/gen_tests.in b/tests/gen_tests.in
index 24a0bfa4..d75fd4d1 100644
--- a/tests/gen_tests.in
+++ b/tests/gen_tests.in
@@ -185,6 +185,7 @@ nanosleep	-a20
 net-icmp_filter	-e trace=getsockopt,setsockopt
 net-sockaddr	-a24 -e trace=connect
 netlink_audit	+netlink_sock_diag.test
+netlink_generic	+netlink_sock_diag.test
 netlink_netfilter	+netlink_sock_diag.test
 netlink_protocol	-e trace=sendto
 netlink_route	+netlink_sock_diag.test
diff --git a/tests/netlink_generic.c b/tests/netlink_generic.c
new file mode 100644
index 00000000..31f4f45e
--- /dev/null
+++ b/tests/netlink_generic.c
@@ -0,0 +1,88 @@
+/*
+ * Copyright (c) 2017 The strace developers.
+ *
+ * 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.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
+ */
+
+/* This test case is based on netlink_selinux.c */
+
+#include "tests.h"
+
+#ifdef HAVE_LINUX_GENETLINK_H
+
+# include <stdio.h>
+# include <string.h>
+# include <unistd.h>
+# include <sys/socket.h>
+# include <linux/netlink.h>
+# include <linux/genetlink.h>
+
+static void
+test_nlmsg_type(const int fd)
+{
+	/*
+	 * Though GENL_ID_CTRL number is statically fixed in this test case,
+	 * strace does not have a builtin knowledge that the corresponding
+	 * string is "nlctrl".
+	 */
+	long rc;
+	struct {
+		const struct nlmsghdr nlh;
+		struct genlmsghdr gnlh;
+	} req = {
+		.nlh = {
+			.nlmsg_len = sizeof(req),
+			.nlmsg_type = GENL_ID_CTRL,
+			.nlmsg_flags = NLM_F_DUMP | NLM_F_REQUEST
+		},
+		.gnlh = {
+			.cmd = CTRL_CMD_GETFAMILY
+		}
+	};
+
+	rc = sendto(fd, &req, sizeof(req), MSG_DONTWAIT, NULL, 0);
+	printf("sendto(%d, {{len=%u, type=nlctrl"
+	       ", flags=NLM_F_REQUEST|0x300, seq=0, pid=0}"
+	       ", \"\\3\\0\\0\\0\"}, %u, MSG_DONTWAIT, NULL, 0) = %s\n",
+	       fd, req.nlh.nlmsg_len,
+	       (unsigned int) sizeof(req), sprintrc(rc));
+}
+
+int main(void)
+{
+	skip_if_unavailable("/proc/self/fd/");
+
+	int fd = create_nl_socket(NETLINK_GENERIC);
+
+	test_nlmsg_type(fd);
+
+	printf("+++ exited with 0 +++\n");
+
+	return 0;
+}
+
+#else
+
+SKIP_MAIN_UNDEFINED("HAVE_LINUX_GENETLINK_H")
+
+#endif
diff --git a/tests/pure_executables.list b/tests/pure_executables.list
index 1e0a5694..ff498333 100755
--- a/tests/pure_executables.list
+++ b/tests/pure_executables.list
@@ -166,6 +166,7 @@ net-yy-inet
 net-yy-netlink
 net-yy-unix
 netlink_audit
+netlink_generic
 netlink_netfilter
 netlink_protocol
 netlink_route