[PATCH v2 12/16] tests: check decoding of AF_SMC diag attribute

JingPiao Chen chenjingpiao at gmail.com
Sun Jun 18 05:18:39 UTC 2017


* tests/sock_diag_smc_attrs.c: New file.
* tests/gen_tests.in (sock_diag_smc_attrs): New entry.
* tests/pure_executables.list: Add sock_diag_smc_attrs.
* tests/.gitignore: Likewise.
---
 tests/.gitignore            |   1 +
 tests/gen_tests.in          |   1 +
 tests/pure_executables.list |   1 +
 tests/sock_diag_smc_attrs.c | 150 ++++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 153 insertions(+)
 create mode 100644 tests/sock_diag_smc_attrs.c

diff --git a/tests/.gitignore b/tests/.gitignore
index 28381e2..e562b3b 100644
--- a/tests/.gitignore
+++ b/tests/.gitignore
@@ -348,6 +348,7 @@ sock_diag_inet_attrs
 sock_diag_inet_req_attrs
 sock_diag_netlink_attrs
 sock_diag_packet_attrs
+sock_diag_smc_attrs
 sock_diag_unix_attrs
 socketcall
 splice
diff --git a/tests/gen_tests.in b/tests/gen_tests.in
index 9d0488c..fb44cbf 100644
--- a/tests/gen_tests.in
+++ b/tests/gen_tests.in
@@ -299,6 +299,7 @@ sock_diag_inet_attrs		+netlink_sock_diag.test
 sock_diag_inet_req_attrs	+netlink_sock_diag.test
 sock_diag_netlink_attrs		+netlink_sock_diag.test
 sock_diag_packet_attrs		+netlink_sock_diag.test
+sock_diag_smc_attrs		+netlink_sock_diag.test
 sock_diag_unix_attrs		+netlink_sock_diag.test
 socketcall	-a20
 splice
diff --git a/tests/pure_executables.list b/tests/pure_executables.list
index a2507d1..6afa7bc 100755
--- a/tests/pure_executables.list
+++ b/tests/pure_executables.list
@@ -287,6 +287,7 @@ sock_diag_inet_attrs
 sock_diag_inet_req_attrs
 sock_diag_netlink_attrs
 sock_diag_packet_attrs
+sock_diag_smc_attrs
 sock_diag_unix_attrs
 socketcall
 splice
diff --git a/tests/sock_diag_smc_attrs.c b/tests/sock_diag_smc_attrs.c
new file mode 100644
index 0000000..8ff0eef
--- /dev/null
+++ b/tests/sock_diag_smc_attrs.c
@@ -0,0 +1,150 @@
+/*
+ * Copyright (c) 2017 JingPiao Chen <chenjingpiao at gmail.com>
+ * Copyright (c) 2017 The strace developers.
+ * 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.
+ * 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.
+ */
+
+#include "tests.h"
+#include <sys/socket.h>
+
+#ifdef AF_SMC
+
+# include <stdint.h>
+# include <stdio.h>
+# include <string.h>
+# include <arpa/inet.h>
+# include <linux/netlink.h>
+# include <linux/rtnetlink.h>
+# include <linux/smc_diag.h>
+# include <linux/sock_diag.h>
+
+#define SMC_ACTIVE 1
+
+# if !defined NETLINK_SOCK_DIAG && defined NETLINK_INET_DIAG
+#  define NETLINK_SOCK_DIAG NETLINK_INET_DIAG
+# endif
+
+static void
+test_smc_diag_none(const int fd)
+{
+	const char address[] = "12.34.56.78";
+	struct nlmsghdr *nlh;
+	struct smc_diag_msg *msg;
+	struct nlattr *nla;
+	int nla_len;
+	void *const nlh0 = tail_alloc(NLMSG_SPACE(sizeof(*msg)));
+	long rc;
+
+	/* struct nlattr */
+	nla_len = NLA_HDRLEN;
+	nlh = nlh0 - nla_len;
+	*nlh = (struct nlmsghdr) {
+		.nlmsg_len = NLMSG_SPACE(sizeof(*msg)) + nla_len,
+		.nlmsg_type = SOCK_DIAG_BY_FAMILY,
+		.nlmsg_flags = NLM_F_DUMP
+	};
+
+	msg = NLMSG_DATA(nlh);
+	*msg = (struct smc_diag_msg) {
+		.diag_family = AF_SMC,
+		.diag_state = SMC_ACTIVE
+	};
+
+	nla = (void *) nlh + NLMSG_SPACE(sizeof(*msg));
+	*nla = (struct nlattr) {
+		.nla_len = nla_len,
+		.nla_type = SMC_DIAG_NONE
+	};
+
+	if (!inet_pton(AF_INET, address, msg->id.idiag_src))
+		perror_msg_and_skip("sendto");
+	if (!inet_pton(AF_INET, address, msg->id.idiag_dst))
+		perror_msg_and_skip("sendto");
+
+	rc = sendto(fd, nlh, nlh->nlmsg_len, MSG_DONTWAIT, NULL, 0);
+
+	printf("sendto(%d, {{len=%u, type=SOCK_DIAG_BY_FAMILY"
+	       ", flags=NLM_F_DUMP, seq=0, pid=0}, {diag_family=AF_SMC"
+	       ", diag_state=SMC_ACTIVE, diag_fallback=0, diag_shutdown=0"
+	       ", id={idiag_sport=htons(0), idiag_dport=htons(0)"
+	       ", inet_pton(AF_INET, \"%s\", &idiag_src)"
+	       ", inet_pton(AF_INET, \"%s\", &idiag_dst)"
+	       ", idiag_if=0, idiag_cookie=[0, 0]}"
+	       ", diag_uid=0, diag_inode=0}"
+	       ", {{nla_len=%u, nla_type=SMC_DIAG_NONE}}}"
+	       ", %u, MSG_DONTWAIT, NULL, 0) = %s\n",
+	       fd, nlh->nlmsg_len, address, address,
+	       nla->nla_len, nlh->nlmsg_len, sprintrc(rc));
+
+	/* struct nlattr and some data */
+	nla_len = NLA_HDRLEN + 4;
+	memmove(nlh0 - nla_len, nlh, NLMSG_SPACE(sizeof(*msg)));
+	nlh = nlh0 - nla_len;
+	nlh->nlmsg_len = NLMSG_SPACE(sizeof(*msg)) + nla_len;
+
+	nla = (void *) nlh + NLMSG_SPACE(sizeof(*msg));
+	*nla = (struct nlattr) {
+		.nla_len = nla_len,
+		.nla_type = SMC_DIAG_NONE
+	};
+	memcpy(RTA_DATA(nla), "1234", 4);
+
+	if (!inet_pton(AF_INET, address, msg->id.idiag_src))
+		perror_msg_and_skip("sendto");
+	if (!inet_pton(AF_INET, address, msg->id.idiag_dst))
+		perror_msg_and_skip("sendto");
+
+	rc = sendto(fd, nlh, nlh->nlmsg_len, MSG_DONTWAIT, NULL, 0);
+
+	printf("sendto(%d, {{len=%u, type=SOCK_DIAG_BY_FAMILY"
+	       ", flags=NLM_F_DUMP, seq=0, pid=0}, {diag_family=AF_SMC"
+	       ", diag_state=SMC_ACTIVE, diag_fallback=0, diag_shutdown=0"
+	       ", id={idiag_sport=htons(0), idiag_dport=htons(0)"
+	       ", inet_pton(AF_INET, \"%s\", &idiag_src)"
+	       ", inet_pton(AF_INET, \"%s\", &idiag_dst), idiag_if=0"
+	       ", idiag_cookie=[0, 0]}, diag_uid=0, diag_inode=0}"
+	       ", {{nla_len=%u, nla_type=SMC_DIAG_NONE}, \"1234\"}}"
+	       ", %u, MSG_DONTWAIT, NULL, 0) = %s\n",
+	       fd, nlh->nlmsg_len, address, address,
+	       nla->nla_len, nlh->nlmsg_len, sprintrc(rc));
+}
+
+int main(void)
+{
+	skip_if_unavailable("/proc/self/fd/");
+
+	int fd = create_nl_socket(NETLINK_SOCK_DIAG);
+
+	test_smc_diag_none(fd);
+
+	printf("+++ exited with 0 +++\n");
+
+	return 0;
+}
+#else
+
+SKIP_MAIN_UNDEFINED("AF_SMC")
+
+#endif
-- 
2.7.4





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