1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
|
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
This file is part of systemd.
Copyright 2013 Tom Gundersen <teg@jklm.no>
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include <linux/rtnetlink.h>
#include <netinet/ether.h>
#include "util.h"
#include "macro.h"
#include "sd-rtnl.h"
#include "socket-util.h"
#include "rtnl-util.h"
static void test_link_configure(sd_rtnl *rtnl, int ifindex) {
_cleanup_sd_rtnl_message_unref_ sd_rtnl_message *message;
uint16_t type;
const char *mac = "98:fe:94:3f:c6:18", *name = "test";
unsigned int mtu = 1450;
void *data;
/* we'd really like to test NEWLINK, but let's not mess with the running kernel */
assert(sd_rtnl_message_link_new(RTM_GETLINK, ifindex, 0, 0, &message) >= 0);
assert(sd_rtnl_message_append(message, IFLA_IFNAME, name) >= 0);
assert(sd_rtnl_message_append(message, IFLA_ADDRESS, ether_aton(mac)) >= 0);
assert(sd_rtnl_message_append(message, IFLA_MTU, &mtu) >= 0);
assert(sd_rtnl_message_read(message, &type, &data) >= 0);
assert(type == IFLA_IFNAME);
assert(streq(name, (char *) data));
assert(sd_rtnl_message_read(message, &type, &data) >= 0);
assert(type == IFLA_ADDRESS);
assert(streq(mac, ether_ntoa(data)));
assert(sd_rtnl_message_read(message, &type, &data) >= 0);
assert(type == IFLA_MTU);
assert(mtu == *(unsigned int *) data);
assert(sd_rtnl_call(rtnl, message, 0, NULL) == 1);
}
static void test_route(void) {
_cleanup_sd_rtnl_message_unref_ sd_rtnl_message *req;
uint32_t addr = htonl(INADDR_LOOPBACK);
uint32_t index = 2;
uint16_t type;
void *data;
int r;
r = sd_rtnl_message_route_new(RTM_NEWROUTE, AF_INET, 0, 0, 0,
RT_TABLE_MAIN, RT_SCOPE_UNIVERSE, RTPROT_BOOT,
RTN_UNICAST, 0, &req);
if (r < 0) {
log_error("Could not create RTM_NEWROUTE message: %s", strerror(-r));
return;
}
r = sd_rtnl_message_append(req, RTA_GATEWAY, &addr);
if (r < 0) {
log_error("Could not append RTA_GATEWAY attribute: %s", strerror(-r));
return;
}
r = sd_rtnl_message_append(req, RTA_OIF, &index);
if (r < 0) {
log_error("Could not append RTA_OIF attribute: %s", strerror(-r));
return;
}
assert(sd_rtnl_message_read(req, &type, &data) > 0);
assert(type == RTA_GATEWAY);
assert(*(uint32_t *) data == addr);
assert(sd_rtnl_message_read(req, &type, &data) > 0);
assert(type == RTA_OIF);
assert(*(uint32_t *) data == index);
}
static void test_multiple(void) {
sd_rtnl *rtnl1, *rtnl2;
assert(sd_rtnl_open(0, &rtnl1) >= 0);
assert(sd_rtnl_open(0, &rtnl2) >= 0);
rtnl1 = sd_rtnl_unref(rtnl1);
rtnl2 = sd_rtnl_unref(rtnl2);
}
int main(void) {
sd_rtnl *rtnl;
sd_rtnl_message *m;
sd_rtnl_message *r;
void *data;
int if_loopback;
uint16_t type;
unsigned int mtu = 0;
unsigned int *mtu_reply;
test_multiple();
test_route();
assert(sd_rtnl_open(0, &rtnl) >= 0);
assert(rtnl);
if_loopback = (int) if_nametoindex("lo");
assert(if_loopback > 0);
test_link_configure(rtnl, if_loopback);
assert(sd_rtnl_message_link_new(RTM_GETLINK, if_loopback, 0, 0, &m) >= 0);
assert(m);
assert(sd_rtnl_message_get_type(m, &type) >= 0);
assert(type == RTM_GETLINK);
assert(sd_rtnl_message_read(m, &type, &data) == 0);
assert(sd_rtnl_call(rtnl, m, 0, &r) == 1);
assert(sd_rtnl_message_get_type(r, &type) >= 0);
assert(type == RTM_NEWLINK);
assert(sd_rtnl_message_read(m, &type, &data) == 0);
assert((r = sd_rtnl_message_unref(r)) == NULL);
assert(sd_rtnl_call(rtnl, m, -1, &r) == -EPERM);
assert((m = sd_rtnl_message_unref(m)) == NULL);
assert((r = sd_rtnl_message_unref(r)) == NULL);
assert(sd_rtnl_message_link_new(RTM_GETLINK, if_loopback, 0, 0, &m) >= 0);
assert(m);
assert(sd_rtnl_message_append(m, IFLA_MTU, &mtu) >= 0);
assert(sd_rtnl_message_read(m, &type, (void **) &mtu_reply) == 1);
assert(type == IFLA_MTU);
assert(*mtu_reply == 0);
assert(sd_rtnl_message_read(m, &type, &data) == 0);
assert(sd_rtnl_call(rtnl, m, -1, &r) == 1);
while (sd_rtnl_message_read(r, &type, &data) > 0) {
switch (type) {
// case IFLA_MTU:
// assert(*(unsigned int *) data == 65536);
// break;
// case IFLA_QDISC:
// assert(streq((char *) data, "noqueue"));
// break;
case IFLA_IFNAME:
assert(streq((char *) data, "lo"));
break;
}
}
assert((m = sd_rtnl_message_unref(m)) == NULL);
assert((r = sd_rtnl_message_unref(r)) == NULL);
assert((rtnl = sd_rtnl_unref(rtnl)) == NULL);
return EXIT_SUCCESS;
}
|
