1/*
2 * Copyright (c) 2017 JingPiao Chen <chenjingpiao@gmail.com>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. The name of the author may not be used to endorse or promote products
14 *    derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28#include "tests.h"
29#include <stdio.h>
30#include <string.h>
31#include <unistd.h>
32#include <sys/socket.h>
33#include "netlink.h"
34#include <linux/rtnetlink.h>
35
36static void
37test_nlmsg_type(const int fd)
38{
39	long rc;
40	struct nlmsghdr nlh = {
41		.nlmsg_len = sizeof(nlh),
42		.nlmsg_type = RTM_GETLINK,
43		.nlmsg_flags = NLM_F_REQUEST,
44	};
45
46	rc = sendto(fd, &nlh, sizeof(nlh), MSG_DONTWAIT, NULL, 0);
47	printf("sendto(%d, {len=%u, type=RTM_GETLINK"
48	       ", flags=NLM_F_REQUEST, seq=0, pid=0}"
49	       ", %u, MSG_DONTWAIT, NULL, 0) = %s\n",
50	       fd, nlh.nlmsg_len, (unsigned) sizeof(nlh), sprintrc(rc));
51}
52
53static void
54test_nlmsg_flags(const int fd)
55{
56	long rc;
57	struct nlmsghdr nlh = {
58		.nlmsg_len = sizeof(nlh),
59	};
60
61	nlh.nlmsg_type = RTM_GETLINK;
62	nlh.nlmsg_flags = NLM_F_REQUEST | NLM_F_DUMP;
63	rc = sendto(fd, &nlh, sizeof(nlh), MSG_DONTWAIT, NULL, 0);
64	printf("sendto(%d, {len=%u, type=RTM_GETLINK"
65	       ", flags=NLM_F_REQUEST|NLM_F_DUMP, seq=0, pid=0}"
66	       ", %u, MSG_DONTWAIT, NULL, 0) = %s\n",
67	       fd, nlh.nlmsg_len, (unsigned) sizeof(nlh), sprintrc(rc));
68
69	nlh.nlmsg_type = RTM_DELACTION;
70	nlh.nlmsg_flags = NLM_F_ROOT;
71	rc = sendto(fd, &nlh, sizeof(nlh), MSG_DONTWAIT, NULL, 0);
72	printf("sendto(%d, {len=%u, type=RTM_DELACTION"
73	       ", flags=NLM_F_ROOT, seq=0, pid=0}"
74	       ", %u, MSG_DONTWAIT, NULL, 0) = %s\n",
75	       fd, nlh.nlmsg_len, (unsigned) sizeof(nlh), sprintrc(rc));
76
77	nlh.nlmsg_type = RTM_NEWLINK;
78	nlh.nlmsg_flags = NLM_F_ECHO | NLM_F_REPLACE;
79	rc = sendto(fd, &nlh, sizeof(nlh), MSG_DONTWAIT, NULL, 0);
80	printf("sendto(%d, {len=%u, type=RTM_NEWLINK"
81	       ", flags=NLM_F_ECHO|NLM_F_REPLACE, seq=0, pid=0}"
82	       ", %u, MSG_DONTWAIT, NULL, 0) = %s\n",
83	       fd, nlh.nlmsg_len, (unsigned) sizeof(nlh), sprintrc(rc));
84
85	nlh.nlmsg_type = RTM_DELLINK;
86	nlh.nlmsg_flags = NLM_F_REPLACE;
87	rc = sendto(fd, &nlh, sizeof(nlh), MSG_DONTWAIT, NULL, 0);
88	printf("sendto(%d, {len=%u, type=RTM_DELLINK"
89	       ", flags=%#x /* NLM_F_??? */, seq=0, pid=0}"
90	       ", %u, MSG_DONTWAIT, NULL, 0) = %s\n",
91	       fd, nlh.nlmsg_len, NLM_F_REPLACE,
92	       (unsigned) sizeof(nlh), sprintrc(rc));
93}
94
95int main(void)
96{
97	skip_if_unavailable("/proc/self/fd/");
98
99	int fd = create_nl_socket(NETLINK_ROUTE);
100
101	test_nlmsg_type(fd);
102	test_nlmsg_flags(fd);
103
104	printf("+++ exited with 0 +++\n");
105
106	return 0;
107}
108