1 /*
2  * Copyright (c) 2017 JingPiao Chen <chenjingpiao@gmail.com>
3  * Copyright (c) 2017 The strace developers.
4  * All rights reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  * 1. Redistributions of source code must retain the above copyright
10  *    notice, this list of conditions and the following disclaimer.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  *    notice, this list of conditions and the following disclaimer in the
13  *    documentation and/or other materials provided with the distribution.
14  * 3. The name of the author may not be used to endorse or promote products
15  *    derived from this software without specific prior written permission.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27  */
28 
29 #include "tests.h"
30 
31 #include <stdio.h>
32 #include "test_nlattr.h"
33 #include <linux/rtnetlink.h>
34 
35 static void
36 init_tcamsg(struct nlmsghdr *const nlh, const unsigned int msg_len)
37 {
38 	SET_STRUCT(struct nlmsghdr, nlh,
39 		.nlmsg_len = msg_len,
40 		.nlmsg_type = RTM_GETACTION,
41 		.nlmsg_flags = NLM_F_DUMP
42 	);
43 
44 	struct tcamsg *const msg = NLMSG_DATA(nlh);
45 	SET_STRUCT(struct tcamsg, msg,
46 		.tca_family = AF_INET
47 	);
48 }
49 
50 static void
51 print_tcamsg(const unsigned int msg_len)
52 {
53 	printf("{len=%u, type=RTM_GETACTION, flags=NLM_F_DUMP"
54 	       ", seq=0, pid=0}, {tca_family=AF_INET}",
55 	       msg_len);
56 }
57 
58 int
59 main(void)
60 {
61 	skip_if_unavailable("/proc/self/fd/");
62 
63 	const int fd = create_nl_socket(NETLINK_ROUTE);
64 	const unsigned int hdrlen = sizeof(struct tcamsg);
65 	void *nlh0 = tail_alloc(NLMSG_SPACE(hdrlen));
66 
67 	static char pattern[4096];
68 	fill_memory_ex(pattern, sizeof(pattern), 'a', 'z' - 'a' + 1);
69 
70 	const unsigned int nla_type = 0xffff & NLA_TYPE_MASK;
71 	char nla_type_str[256];
72 	sprintf(nla_type_str, "%#x /* TCA_ACT_??? */", nla_type);
73 	TEST_NLATTR_(fd, nlh0, hdrlen,
74 		     init_tcamsg, print_tcamsg,
75 		     nla_type, nla_type_str,
76 		     4, pattern, 4,
77 		     print_quoted_hex(pattern, 4));
78 
79 	puts("+++ exited with 0 +++");
80 	return 0;
81 }
82