[PATCH v2 16/18] tests: check decoding of smc_diag_msg attributes

JingPiao Chen chenjingpiao at gmail.com
Tue Jun 27 10:10:18 UTC 2017


* tests/nlattr_smc_diag_msg.c: New file.
* tests/gen_tests.in (nlattr_smc_diag_msg): New entry.
* tests/pure_executables.list: Add nlattr_smc_diag_msg.
* tests/.gitignore: Likewise.
---
 tests/.gitignore            |   1 +
 tests/gen_tests.in          |   1 +
 tests/nlattr_smc_diag_msg.c | 355 ++++++++++++++++++++++++++++++++++++++++++++
 tests/pure_executables.list |   1 +
 4 files changed, 358 insertions(+)
 create mode 100644 tests/nlattr_smc_diag_msg.c

diff --git a/tests/.gitignore b/tests/.gitignore
index f314e21..149f7c2 100644
--- a/tests/.gitignore
+++ b/tests/.gitignore
@@ -213,6 +213,7 @@ nlattr
 nlattr_inet_diag_msg
 nlattr_netlink_diag_msg
 nlattr_packet_diag_msg
+nlattr_smc_diag_msg
 nlattr_unix_diag_msg
 nsyscalls
 old_mmap
diff --git a/tests/gen_tests.in b/tests/gen_tests.in
index 2ef9cdf..347dca0 100644
--- a/tests/gen_tests.in
+++ b/tests/gen_tests.in
@@ -196,6 +196,7 @@ nlattr		+netlink_sock_diag.test
 nlattr_inet_diag_msg		+netlink_sock_diag.test
 nlattr_netlink_diag_msg		+netlink_sock_diag.test
 nlattr_packet_diag_msg		+netlink_sock_diag.test
+nlattr_smc_diag_msg		+netlink_sock_diag.test
 nlattr_unix_diag_msg		+netlink_sock_diag.test
 old_mmap	-a11 -e trace=mmap
 oldfstat	-a18 -v -P stat.sample
diff --git a/tests/nlattr_smc_diag_msg.c b/tests/nlattr_smc_diag_msg.c
new file mode 100644
index 0000000..423fd82
--- /dev/null
+++ b/tests/nlattr_smc_diag_msg.c
@@ -0,0 +1,355 @@
+/*
+ * 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 "netlink.h"
+# include <stdio.h>
+# include <string.h>
+# include <stdint.h>
+# include <arpa/inet.h>
+# include <linux/rtnetlink.h>
+# include <linux/smc_diag.h>
+# include <linux/sock_diag.h>
+
+# define SMC_CLNT 0
+# define SMC_ACTIVE 1
+
+static void
+init_smc_diag_msg(struct nlmsghdr *nlh, unsigned int msg_len,
+		  const char *address)
+{
+	struct smc_diag_msg *msg;
+
+	SET_STRUCT(struct nlmsghdr, nlh,
+		.nlmsg_len = msg_len,
+		.nlmsg_type = SOCK_DIAG_BY_FAMILY,
+		.nlmsg_flags = NLM_F_DUMP
+	);
+
+	msg = NLMSG_DATA(nlh);
+	SET_STRUCT(struct smc_diag_msg, msg,
+		.diag_family = AF_SMC,
+		.diag_state = SMC_ACTIVE
+	);
+
+	if (!inet_pton(AF_INET, address, msg->id.idiag_src))
+		perror_msg_and_skip("inet_pton");
+	if (!inet_pton(AF_INET, address, msg->id.idiag_dst))
+		perror_msg_and_skip("inet_pton");
+}
+
+static void
+test_smc_diag_conninfo(const int fd)
+{
+	const int hdrlen = sizeof(struct smc_diag_msg);
+	const char address[] = "12.34.56.78";
+	struct nlmsghdr *nlh;
+	struct nlattr *nla;
+	unsigned int nla_len;
+	unsigned int msg_len;
+	void *const nlh0 = tail_alloc(NLMSG_SPACE(hdrlen));
+	long rc;
+
+	/* len < sizeof(struct smc_diag_conninfo) */
+	nla_len = NLA_HDRLEN + 2;
+	msg_len = NLMSG_SPACE(hdrlen) + nla_len;
+	nlh = nlh0 - nla_len;
+	init_smc_diag_msg(nlh, msg_len, address);
+
+	nla = NLMSG_ATTR(nlh, hdrlen);
+	SET_STRUCT(struct nlattr, nla,
+		.nla_len = nla_len,
+		.nla_type = SMC_DIAG_CONNINFO
+	);
+	memcpy(RTA_DATA(nla), "12", 2);
+
+	rc = sendto(fd, nlh, msg_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_CONNINFO}, \"12\"}}"
+	       ", %u, MSG_DONTWAIT, NULL, 0) = %s\n",
+	       fd, msg_len, address, address, nla_len, msg_len, sprintrc(rc));
+
+	/* short read of smc_diag_conninfo */
+	nla_len = NLA_HDRLEN + sizeof(struct smc_diag_conninfo);
+	msg_len = NLMSG_SPACE(hdrlen) + nla_len;
+	nlh = nlh0 - (nla_len - 1);
+	init_smc_diag_msg(nlh, msg_len, address);
+
+	nla = NLMSG_ATTR(nlh, hdrlen);
+	SET_STRUCT(struct nlattr, nla,
+		.nla_len = nla_len,
+		.nla_type = SMC_DIAG_CONNINFO
+	);
+
+	rc = sendto(fd, nlh, msg_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_CONNINFO}, %p}}"
+	       ", %u, MSG_DONTWAIT, NULL, 0) = %s\n",
+	       fd, msg_len, address, address, nla_len,
+	       RTA_DATA(nla), msg_len, sprintrc(rc));
+
+	/* smc_diag_conninfo */
+	nla_len = NLA_HDRLEN + sizeof(struct smc_diag_conninfo);
+	msg_len = NLMSG_SPACE(hdrlen) + nla_len;
+	nlh = nlh0 - nla_len;
+	init_smc_diag_msg(nlh, msg_len, address);
+
+	nla = NLMSG_ATTR(nlh, hdrlen);
+	SET_STRUCT(struct nlattr, nla,
+		.nla_len = nla_len,
+		.nla_type = SMC_DIAG_CONNINFO
+	);
+	static const struct smc_diag_conninfo cinfo = {
+		.token = 0xabcdefac,
+		.sndbuf_size = 0xbcdaefad,
+		.rmbe_size = 0xcdbaefab,
+		.peer_rmbe_size = 0xdbcdedaf,
+		.rx_prod = {
+			.reserved = 0xabcd,
+			.wrap = 0xbcad,
+			.count = 0xcdedbade
+		},
+		.rx_cons = {
+			.reserved = 0xabcd,
+			.wrap = 0xbcad,
+			.count = 0xcdedbade
+		},
+		.tx_prod = {
+			.reserved = 0xabcd,
+			.wrap = 0xbcad,
+			.count = 0xcdedbade
+		},
+		.tx_cons = {
+			.reserved = 0xabcd,
+			.wrap = 0xbcad,
+			.count = 0xcdedbade
+		},
+		.rx_prod_flags = 0xff,
+		.rx_conn_state_flags = 0xff,
+		.tx_prod_flags = 0xff,
+		.tx_conn_state_flags = 0xff,
+		.tx_prep = {
+			.reserved = 0xabcd,
+			.wrap = 0xbcad,
+			.count = 0xcdedbade
+		},
+		.tx_sent = {
+			.reserved = 0xabcd,
+			.wrap = 0xbcad,
+			.count = 0xcdedbade
+		},
+		.tx_fin = {
+			.reserved = 0xabcd,
+			.wrap = 0xbcad,
+			.count = 0xcdedbade
+		}
+	};
+	memcpy(RTA_DATA(nla), &cinfo, sizeof(cinfo));
+
+	rc = sendto(fd, nlh, msg_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_CONNINFO}, {token=%u"
+	       ", sndbuf_size=%u, rmbe_size=%u, peer_rmbe_size=%u"
+	       ", rx_prod={reserved=%u, wrap=%u, count=%u}"
+	       ", rx_cons={reserved=%u, wrap=%u, count=%u}"
+	       ", tx_prod={reserved=%u, wrap=%u, count=%u}"
+	       ", tx_cons={reserved=%u, wrap=%u, count=%u}"
+	       ", rx_prod_flags=0xff, rx_conn_state_flags=0xff"
+	       ", tx_prod_flags=0xff, tx_conn_state_flags=0xff"
+	       ", tx_prep={reserved=%u, wrap=%u, count=%u}"
+	       ", tx_sent={reserved=%u, wrap=%u, count=%u}"
+	       ", tx_fin={reserved=%u, wrap=%u, count=%u}}}}"
+	       ", %u, MSG_DONTWAIT, NULL, 0) = %s\n",
+	       fd, msg_len, address, address, nla_len,
+	       cinfo.token, cinfo.sndbuf_size,
+	       cinfo.rmbe_size, cinfo.peer_rmbe_size,
+	       cinfo.rx_prod.reserved, cinfo.rx_prod.wrap,
+	       cinfo.rx_prod.count,
+	       cinfo.rx_cons.reserved, cinfo.rx_cons.wrap,
+	       cinfo.rx_cons.count,
+	       cinfo.tx_prod.reserved, cinfo.tx_prod.wrap,
+	       cinfo.tx_prod.count,
+	       cinfo.tx_cons.reserved, cinfo.tx_cons.wrap,
+	       cinfo.tx_cons.count,
+	       cinfo.tx_prep.reserved, cinfo.tx_prep.wrap,
+	       cinfo.tx_prep.count,
+	       cinfo.tx_sent.reserved, cinfo.tx_sent.wrap,
+	       cinfo.tx_sent.count,
+	       cinfo.tx_fin.reserved, cinfo.tx_fin.wrap,
+	       cinfo.tx_fin.count, msg_len, sprintrc(rc));
+}
+
+static void
+test_smc_diag_lgrinfo(const int fd)
+{
+	const int hdrlen = sizeof(struct smc_diag_msg);
+	const char address[] = "12.34.56.78";
+	struct nlmsghdr *nlh;
+	struct nlattr *nla;
+	unsigned int nla_len;
+	unsigned int msg_len;
+	void *const nlh0 = tail_alloc(NLMSG_SPACE(hdrlen));
+	long rc;
+
+	/* len < sizeof(struct smc_diag_lgrinfo) */
+	nla_len = NLA_HDRLEN + 2;
+	msg_len = NLMSG_SPACE(hdrlen) + nla_len;
+	nlh = nlh0 - nla_len;
+	init_smc_diag_msg(nlh, msg_len, address);
+
+	nla = NLMSG_ATTR(nlh, hdrlen);
+	SET_STRUCT(struct nlattr, nla,
+		.nla_len = nla_len,
+		.nla_type = SMC_DIAG_LGRINFO
+	);
+	memcpy(RTA_DATA(nla), "12", 2);
+
+	rc = sendto(fd, nlh, msg_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_LGRINFO}"
+	       ", \"12\"}}, %u, MSG_DONTWAIT, NULL, 0) = %s\n",
+	       fd, msg_len, address, address,
+	       nla_len, msg_len, sprintrc(rc));
+
+	/* short read of smc_diag_lgrinfo */
+	nla_len = NLA_HDRLEN + sizeof(struct smc_diag_lgrinfo);
+	msg_len = NLMSG_SPACE(hdrlen) + nla_len;
+	nlh = nlh0 - (nla_len - 1);
+	init_smc_diag_msg(nlh, msg_len, address);
+
+	nla = NLMSG_ATTR(nlh, hdrlen);
+	SET_STRUCT(struct nlattr, nla,
+		.nla_len = nla_len,
+		.nla_type = SMC_DIAG_LGRINFO
+	);
+
+	rc = sendto(fd, nlh, msg_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_LGRINFO}"
+	       ", %p}}, %u, MSG_DONTWAIT, NULL, 0) = %s\n",
+	       fd, msg_len, address, address, nla_len,
+	       RTA_DATA(nla), msg_len, sprintrc(rc));
+
+	/* smc_diag_lgrinfo */
+	nla_len = NLA_HDRLEN + sizeof(struct smc_diag_lgrinfo);
+	msg_len = NLMSG_SPACE(hdrlen) + nla_len;
+	nlh = nlh0 - nla_len;
+	init_smc_diag_msg(nlh, msg_len, address);
+
+	nla = NLMSG_ATTR(nlh, hdrlen);
+	SET_STRUCT(struct nlattr, nla,
+		.nla_len = nla_len,
+		.nla_type = SMC_DIAG_LGRINFO
+	);
+	static const struct smc_diag_lgrinfo linfo = {
+		.lnk[0] = {
+			.link_id = 0xaf,
+			.ibport = 0xfa,
+			.ibname = "123",
+			.gid = "456",
+			.peer_gid = "789"
+		},
+		.role = SMC_CLNT
+	};
+	memcpy(RTA_DATA(nla), &linfo, sizeof(linfo));
+
+	rc = sendto(fd, nlh, msg_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_LGRINFO}"
+	       ", {lnk[0]={link_id=%u, ibname=\"123\", ibport=%u"
+	       ", gid=\"456\", peer_gid=\"789\"}, role=SMC_CLNT}}}"
+	       ", %u, MSG_DONTWAIT, NULL, 0) = %s\n",
+	       fd, msg_len, address, address, nla_len,
+	       linfo.lnk[0].link_id, linfo.lnk[0].ibport,
+	       msg_len, sprintrc(rc));
+}
+
+int main(void)
+{
+	skip_if_unavailable("/proc/self/fd/");
+
+	int fd = create_nl_socket(NETLINK_SOCK_DIAG);
+
+	test_smc_diag_conninfo(fd);
+	test_smc_diag_lgrinfo(fd);
+
+	printf("+++ exited with 0 +++\n");
+
+	return 0;
+}
+#else
+
+SKIP_MAIN_UNDEFINED("AF_SMC")
+
+#endif
diff --git a/tests/pure_executables.list b/tests/pure_executables.list
index 4b342f8..6a279bd 100755
--- a/tests/pure_executables.list
+++ b/tests/pure_executables.list
@@ -178,6 +178,7 @@ nlattr
 nlattr_inet_diag_msg
 nlattr_netlink_diag_msg
 nlattr_packet_diag_msg
+nlattr_smc_diag_msg
 nlattr_unix_diag_msg
 old_mmap
 oldfstat
-- 
2.7.4





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