[PATCH 7/7] tests: check decoding of IFLA_PROTINFO netlink attribute of ifinfomsg
JingPiao Chen
chenjingpiao at gmail.com
Thu Aug 31 02:39:25 UTC 2017
* tests/nlattr_ifla_brport.c: New file.
* tests/gen_tests.in (nlattr_ifla_brport): New entry.
* tests/pure_executables.list: Add nlattr_ifla_brport.
* tests/.gitignore: Likewise.
* tests/test_nlattr.h (TEST_NESTED_NLATTR_OBJECT): New macro.
---
tests/.gitignore | 1 +
tests/gen_tests.in | 1 +
tests/nlattr_ifla_brport.c | 121 ++++++++++++++++++++++++++++++++++++++++++++
tests/pure_executables.list | 1 +
tests/test_nlattr.h | 35 +++++++++++++
5 files changed, 159 insertions(+)
create mode 100644 tests/nlattr_ifla_brport.c
diff --git a/tests/.gitignore b/tests/.gitignore
index 1d69662..6d4555d 100644
--- a/tests/.gitignore
+++ b/tests/.gitignore
@@ -225,6 +225,7 @@ nlattr_fib_rule_hdr
nlattr_ifaddrlblmsg
nlattr_ifaddrmsg
nlattr_ifinfomsg
+nlattr_ifla_brport
nlattr_inet_diag_msg
nlattr_inet_diag_req_compat
nlattr_inet_diag_req_v2
diff --git a/tests/gen_tests.in b/tests/gen_tests.in
index ba156c3..1a9605b 100644
--- a/tests/gen_tests.in
+++ b/tests/gen_tests.in
@@ -204,6 +204,7 @@ nlattr_fib_rule_hdr +netlink_sock_diag.test
nlattr_ifaddrlblmsg +netlink_sock_diag.test
nlattr_ifaddrmsg +netlink_sock_diag.test
nlattr_ifinfomsg +netlink_sock_diag.test
+nlattr_ifla_brport +netlink_sock_diag.test
nlattr_inet_diag_msg +netlink_sock_diag.test
nlattr_inet_diag_req_compat +netlink_sock_diag.test
nlattr_inet_diag_req_v2 +netlink_sock_diag.test
diff --git a/tests/nlattr_ifla_brport.c b/tests/nlattr_ifla_brport.c
new file mode 100644
index 0000000..258d86e
--- /dev/null
+++ b/tests/nlattr_ifla_brport.c
@@ -0,0 +1,121 @@
+/*
+ * 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 <stdio.h>
+#include <inttypes.h>
+#include "test_nlattr.h"
+#include <linux/if.h>
+#include <linux/if_arp.h>
+#ifdef HAVE_LINUX_IF_LINK_H
+# include <linux/if_link.h>
+#endif
+#include <linux/rtnetlink.h>
+
+#define IFLA_BRPORT_PRIORITY 2
+#define IFLA_BRPORT_MESSAGE_AGE_TIMER 21
+
+static void
+init_ifinfomsg(struct nlmsghdr *const nlh, const unsigned int msg_len)
+{
+ SET_STRUCT(struct nlmsghdr, nlh,
+ .nlmsg_len = msg_len,
+ .nlmsg_type = RTM_GETLINK,
+ .nlmsg_flags = NLM_F_DUMP
+ );
+
+ struct ifinfomsg *const msg = NLMSG_DATA(nlh);
+ SET_STRUCT(struct ifinfomsg, msg,
+ .ifi_family = AF_UNIX,
+ .ifi_type = ARPHRD_LOOPBACK,
+ .ifi_index = ifindex_lo(),
+ .ifi_flags = IFF_UP,
+ );
+
+ struct nlattr *const nla = NLMSG_ATTR(nlh, sizeof(*msg));
+ SET_STRUCT(struct nlattr, nla,
+ .nla_len = msg_len - NLMSG_SPACE(sizeof(*msg)),
+ .nla_type = IFLA_PROTINFO
+ );
+}
+
+static void
+print_ifinfomsg(const unsigned int msg_len)
+{
+ printf("{len=%u, type=RTM_GETLINK, flags=NLM_F_DUMP"
+ ", seq=0, pid=0}, {ifi_family=AF_UNIX"
+ ", ifi_type=ARPHRD_LOOPBACK"
+ ", ifi_index=" IFINDEX_LO_STR
+ ", ifi_flags=IFF_UP, ifi_change=0}"
+ ", {{nla_len=%u, nla_type=IFLA_PROTINFO}",
+ msg_len, msg_len - (int) NLMSG_SPACE(sizeof(struct ifinfomsg)));
+}
+
+int
+main(void)
+{
+ skip_if_unavailable("/proc/self/fd/");
+
+ const int fd = create_nl_socket(NETLINK_ROUTE);
+ const unsigned int hdrlen = sizeof(struct ifinfomsg);
+ void *nlh0 = tail_alloc(NLMSG_SPACE(hdrlen));
+
+ static char pattern[4096];
+ fill_memory_ex(pattern, sizeof(pattern), 'a', 'z' - 'a' + 1);
+
+ const uint16_t u16 = 0xabcd;
+ TEST_NESTED_NLATTR_OBJECT(fd, nlh0, hdrlen,
+ init_ifinfomsg, print_ifinfomsg,
+ IFLA_BRPORT_PRIORITY, pattern, u16,
+ printf("%u", u16));
+
+ const uint64_t u64 = 0xabcdedeeefeafeab;
+ TEST_NESTED_NLATTR_OBJECT(fd, nlh0, hdrlen,
+ init_ifinfomsg, print_ifinfomsg,
+ IFLA_BRPORT_MESSAGE_AGE_TIMER, pattern, u64,
+ printf("%" PRIu64, u64));
+
+#ifdef HAVE_STRUCT_IFLA_BRIDGE_ID
+ static const struct ifla_bridge_id id = {
+ .prio = { 0xab, 0xcd },
+ .addr = { 0xab, 0xcd, 0xef, 0xac, 0xbc, 0xcd }
+ };
+ TEST_NESTED_NLATTR_OBJECT(fd, nlh0, hdrlen,
+ init_ifinfomsg, print_ifinfomsg,
+ IFLA_BRPORT_ROOT_ID, pattern, id,
+ printf("{prio=[%u, %u]"
+ ", addr=%02x:%02x:%02x:%02x:%02x:%02x}",
+ id.prio[0], id.prio[1],
+ id.addr[0], id.addr[1], id.addr[2],
+ id.addr[3], id.addr[4], id.addr[5]));
+#endif
+
+ puts("+++ exited with 0 +++");
+ return 0;
+}
diff --git a/tests/pure_executables.list b/tests/pure_executables.list
index 9ed80e2..a3b1c8c 100755
--- a/tests/pure_executables.list
+++ b/tests/pure_executables.list
@@ -187,6 +187,7 @@ nlattr_fib_rule_hdr
nlattr_ifaddrlblmsg
nlattr_ifaddrmsg
nlattr_ifinfomsg
+nlattr_ifla_brport
nlattr_inet_diag_msg
nlattr_inet_diag_req_compat
nlattr_inet_diag_req_v2
diff --git a/tests/test_nlattr.h b/tests/test_nlattr.h
index c282167..048d547 100644
--- a/tests/test_nlattr.h
+++ b/tests/test_nlattr.h
@@ -202,3 +202,38 @@ print_nlattr(const unsigned int nla_len, const char *const nla_type)
} \
printf("]")); \
} while (0)
+
+#define TEST_NESTED_NLATTR_OBJECT(fd_, nlh0_, hdrlen_, \
+ init_msg_, print_msg_, \
+ nla_type_, pattern_, obj_, ...) \
+ do { \
+ const unsigned int plen = \
+ sizeof(obj_) - 1 > DEFAULT_STRLEN \
+ ? DEFAULT_STRLEN : (int) sizeof(obj_) - 1; \
+ /* len < sizeof(obj_) */ \
+ TEST_NLATTR_((fd_), (nlh0_) - NLA_HDRLEN, \
+ (hdrlen_) + NLA_HDRLEN, \
+ (init_msg_), (print_msg_), \
+ (nla_type_), #nla_type_, \
+ plen, (pattern_), plen, \
+ print_quoted_hex((pattern_), plen); \
+ printf("}")); \
+ /* short read of sizeof(obj_) */ \
+ TEST_NLATTR_((fd_), (nlh0_) - NLA_HDRLEN, \
+ (hdrlen_) + NLA_HDRLEN, \
+ (init_msg_), (print_msg_), \
+ (nla_type_), #nla_type_, \
+ sizeof(obj_), \
+ (pattern_), sizeof(obj_) - 1, \
+ printf("%p}", \
+ RTA_DATA(TEST_NLATTR_nla))); \
+ /* sizeof(obj_) */ \
+ TEST_NLATTR_((fd_), (nlh0_) - NLA_HDRLEN, \
+ (hdrlen_) + NLA_HDRLEN, \
+ (init_msg_), (print_msg_), \
+ (nla_type_), #nla_type_, \
+ sizeof(obj_), \
+ &(obj_), sizeof(obj_), \
+ __VA_ARGS__, \
+ printf("}")); \
+ } while (0)
--
2.7.4
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