[PATCH v2 07/16] tests: check decoding of AF_PACKET diag attribute
JingPiao Chen
chenjingpiao at gmail.com
Sun Jun 18 05:18:34 UTC 2017
* tests/sock_diag_packet_attrs.c: New file.
* tests/gen_tests.in (sock_diag_packet_attrs): New entry.
* tests/pure_executables.list: Add sock_diag_packet_attrs.
* tests/.gitignore: Likewise.
---
tests/.gitignore | 1 +
tests/gen_tests.in | 1 +
tests/pure_executables.list | 1 +
tests/sock_diag_packet_attrs.c | 122 +++++++++++++++++++++++++++++++++++++++++
4 files changed, 125 insertions(+)
create mode 100644 tests/sock_diag_packet_attrs.c
diff --git a/tests/.gitignore b/tests/.gitignore
index 0b55bd4..59ce4c2 100644
--- a/tests/.gitignore
+++ b/tests/.gitignore
@@ -345,6 +345,7 @@ sigreturn
sigsuspend
sleep
sock_diag_netlink_attrs
+sock_diag_packet_attrs
sock_diag_unix_attrs
socketcall
splice
diff --git a/tests/gen_tests.in b/tests/gen_tests.in
index 97b2b8f..c1f9985 100644
--- a/tests/gen_tests.in
+++ b/tests/gen_tests.in
@@ -296,6 +296,7 @@ sigprocmask -a34
sigreturn -esignal='!USR1'
sigsuspend -a19 -esignal=none
sock_diag_netlink_attrs +netlink_sock_diag.test
+sock_diag_packet_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 d5f04b0..2590bdf 100755
--- a/tests/pure_executables.list
+++ b/tests/pure_executables.list
@@ -284,6 +284,7 @@ sigprocmask
sigreturn
sigsuspend
sock_diag_netlink_attrs
+sock_diag_packet_attrs
sock_diag_unix_attrs
socketcall
splice
diff --git a/tests/sock_diag_packet_attrs.c b/tests/sock_diag_packet_attrs.c
new file mode 100644
index 0000000..7528d96
--- /dev/null
+++ b/tests/sock_diag_packet_attrs.c
@@ -0,0 +1,122 @@
+/*
+ * 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 <stdint.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <linux/netlink.h>
+#include <linux/packet_diag.h>
+#include <linux/rtnetlink.h>
+#include <linux/sock_diag.h>
+
+#if !defined NETLINK_SOCK_DIAG && defined NETLINK_INET_DIAG
+# define NETLINK_SOCK_DIAG NETLINK_INET_DIAG
+#endif
+
+#undef PACKET_DIAG_NONE
+#define PACKET_DIAG_NONE (PACKET_DIAG_FILTER + 1)
+
+static void
+test_packet_diag_none(const int fd)
+{
+ struct nlmsghdr *nlh;
+ struct packet_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 packet_diag_msg) {
+ .pdiag_family = AF_PACKET,
+ .pdiag_type = SOCK_STREAM
+ };
+
+ nla = (void *) nlh + NLMSG_SPACE(sizeof(*msg));
+ *nla = (struct nlattr) {
+ .nla_len = nla_len,
+ .nla_type = PACKET_DIAG_NONE
+ };
+
+ 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}, {pdiag_family=AF_PACKET"
+ ", pdiag_type=SOCK_STREAM, pdiag_num=0, pdiag_ino=0"
+ ", pdiag_cookie=[0, 0]}, {{nla_len=%u"
+ ", nla_type=%#x /* PACKET_DIAG_??? */}}}"
+ ", %u, MSG_DONTWAIT, NULL, 0) = %s\n", fd, nlh->nlmsg_len,
+ nla->nla_len, nla->nla_type, 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 = PACKET_DIAG_NONE
+ };
+ memcpy(RTA_DATA(nla), "1234", 4);
+
+ 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}, {pdiag_family=AF_PACKET"
+ ", pdiag_type=SOCK_STREAM, pdiag_num=0, pdiag_ino=0"
+ ", pdiag_cookie=[0, 0]}, {{nla_len=%u"
+ ", nla_type=%#x /* PACKET_DIAG_??? */}, \"1234\"}}"
+ ", %u, MSG_DONTWAIT, NULL, 0) = %s\n", fd, nlh->nlmsg_len,
+ nla->nla_len, nla->nla_type, nlh->nlmsg_len, sprintrc(rc));
+}
+
+int main(void)
+{
+ skip_if_unavailable("/proc/self/fd/");
+
+ int fd = create_nl_socket(NETLINK_SOCK_DIAG);
+
+ test_packet_diag_none(fd);
+
+ printf("+++ exited with 0 +++\n");
+
+ return 0;
+}
--
2.7.4
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