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
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
|
/*-*- 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"
#include "event-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);
}
static int link_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) {
void *data;
uint16_t type;
char *ifname = userdata;
assert(rtnl);
assert(m);
log_info("got link info about %s", ifname);
free(ifname);
while (sd_rtnl_message_read(m, &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;
}
}
return 1;
}
static void test_event_loop(int ifindex) {
_cleanup_event_unref_ sd_event *event = NULL;
_cleanup_sd_rtnl_unref_ sd_rtnl *rtnl = NULL;
_cleanup_sd_rtnl_message_unref_ sd_rtnl_message *m = NULL;
char *ifname;
ifname = strdup("lo2");
assert(ifname);
assert(sd_rtnl_open(0, &rtnl) >= 0);
assert(sd_rtnl_message_link_new(RTM_GETLINK, ifindex, 0, 0, &m) >= 0);
assert(sd_rtnl_call_async(rtnl, m, &link_handler, ifname, 0, NULL) >= 0);
assert(sd_event_default(&event) >= 0);
assert(sd_rtnl_attach_event(rtnl, event, 0) >= 0);
assert(sd_event_run(event, 0) >= 0);
assert(sd_rtnl_detach_event(rtnl) >= 0);
}
static int pipe_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) {
int *counter = userdata;
(*counter) --;
log_info("got reply, %d left in pipe", *counter);
return sd_rtnl_message_get_errno(m);
}
static void test_async(int ifindex) {
_cleanup_sd_rtnl_unref_ sd_rtnl *rtnl = NULL;
_cleanup_sd_rtnl_message_unref_ sd_rtnl_message *m = NULL, *r = NULL;
uint32_t serial;
char *ifname;
ifname = strdup("lo");
assert(ifname);
assert(sd_rtnl_open(0, &rtnl) >= 0);
assert(sd_rtnl_message_link_new(RTM_GETLINK, ifindex, 0, 0, &m) >= 0);
assert(sd_rtnl_call_async(rtnl, m, &link_handler, ifname, 0, &serial) >= 0);
assert(sd_rtnl_wait(rtnl, 0) >= 0);
assert(sd_rtnl_process(rtnl, &r) >= 0);
}
static void test_pipe(int ifindex) {
_cleanup_sd_rtnl_unref_ sd_rtnl *rtnl = NULL;
_cleanup_sd_rtnl_message_unref_ sd_rtnl_message *m1 = NULL, *m2 = NULL;
int counter = 0;
assert(sd_rtnl_open(0, &rtnl) >= 0);
assert(sd_rtnl_message_link_new(RTM_GETLINK, ifindex, 0, 0, &m1) >= 0);
assert(sd_rtnl_message_link_new(RTM_GETLINK, ifindex, 0, 0, &m2) >= 0);
counter ++;
assert(sd_rtnl_call_async(rtnl, m1, &pipe_handler, &counter, 0, NULL) >= 0);
counter ++;
assert(sd_rtnl_call_async(rtnl, m2, &pipe_handler, &counter, 0, NULL) >= 0);
while (counter > 0) {
assert(sd_rtnl_wait(rtnl, 0) >= 0);
assert(sd_rtnl_process(rtnl, NULL) >= 0);
}
}
static void test_container(void) {
_cleanup_sd_rtnl_message_unref_ sd_rtnl_message *m = NULL;
uint16_t type;
void *data;
assert(sd_rtnl_message_link_new(RTM_NEWLINK, 0, 0, 0, &m) >= 0);
assert(sd_rtnl_message_open_container(m, IFLA_LINKINFO) >= 0);
assert(sd_rtnl_message_open_container(m, IFLA_LINKINFO) == -EINVAL);
assert(sd_rtnl_message_append(m, IFLA_INFO_KIND, "kind") >= 0);
assert(sd_rtnl_message_close_container(m) >= 0);
assert(sd_rtnl_message_close_container(m) == -EINVAL);
assert(sd_rtnl_message_read(m, &type, &data) == -EINVAL);
/* TODO: add support for entering containers
assert(sd_rtnl_message_read(m, &type, &data) > 0);
assert(type == IFLA_INFO_KIND);
assert(streq("kind", (char *) data));
assert(sd_rtnl_message_read(m, &type, &data) == 0);
*/
}
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();
test_container();
assert(sd_rtnl_open(0, &rtnl) >= 0);
assert(rtnl);
if_loopback = (int) if_nametoindex("lo");
assert(if_loopback > 0);
test_async(if_loopback);
test_pipe(if_loopback);
test_event_loop(if_loopback);
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(sd_rtnl_flush(rtnl) >= 0);
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;
}
|
