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
|
/*-*- 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 "networkd.h"
#include "net-util.h"
#include "path-util.h"
#include "conf-files.h"
#include "conf-parser.h"
#include "util.h"
static int network_load_one(Manager *manager, const char *filename) {
_cleanup_network_free_ Network *network = NULL;
_cleanup_fclose_ FILE *file = NULL;
Route *route;
Address *address;
int r;
assert(manager);
assert(filename);
file = fopen(filename, "re");
if (!file) {
if (errno == ENOENT)
return 0;
else
return errno;
}
network = new0(Network, 1);
if (!network)
return log_oom();
network->manager = manager;
LIST_HEAD_INIT(network->static_addresses);
LIST_HEAD_INIT(network->static_routes);
network->addresses_by_section = hashmap_new(uint64_hash_func, uint64_compare_func);
if (!network->addresses_by_section)
return log_oom();
network->routes_by_section = hashmap_new(uint64_hash_func, uint64_compare_func);
if (!network->routes_by_section)
return log_oom();
network->filename = strdup(filename);
if (!network->filename)
return log_oom();
r = config_parse(NULL, filename, file, "Match\0Network\0Address\0Route\0", config_item_perf_lookup,
(void*) network_gperf_lookup, false, false, network);
if (r < 0) {
log_warning("Could not parse config file %s: %s", filename, strerror(-r));
return r;
}
LIST_PREPEND(networks, manager->networks, network);
LIST_FOREACH(static_routes, route, network->static_routes) {
if (!route->family) {
log_warning("Route section without Gateway field configured in %s. "
"Ignoring", filename);
return 0;
}
if (route->dst_family && route->family != route->dst_family) {
log_warning("Route section with conflicting Gateway and Destination address "
"family configured in %s. Ignoring", filename);
return 0;
}
}
LIST_FOREACH(static_addresses, address, network->static_addresses) {
if (!address->family) {
log_warning("Address section without Address field configured in %s. "
"Ignoring", filename);
return 0;
}
}
network = NULL;
return 0;
}
int network_load(Manager *manager) {
Network *network;
_cleanup_strv_free_ char **files = NULL;
char **f;
int r;
assert(manager);
while ((network = manager->networks))
network_free(network);
r = conf_files_list_strv(&files, ".network", NULL, network_dirs);
if (r < 0) {
log_error("Failed to enumerate network files: %s", strerror(-r));
return r;
}
STRV_FOREACH_BACKWARDS(f, files) {
r = network_load_one(manager, *f);
if (r < 0)
return r;
}
return 0;
}
void network_free(Network *network) {
Route *route;
Address *address;
if (!network)
return;
free(network->filename);
free(network->match_mac);
free(network->match_path);
free(network->match_driver);
free(network->match_type);
free(network->match_name);
free(network->description);
address_free(network->dns);
while ((route = network->static_routes))
route_free(route);
while ((address = network->static_addresses))
address_free(address);
hashmap_free(network->addresses_by_section);
hashmap_free(network->routes_by_section);
if (network->manager && network->manager->networks)
LIST_REMOVE(networks, network->manager->networks, network);
free(network);
}
int network_get(Manager *manager, struct udev_device *device, Network **ret) {
Network *network;
assert(manager);
assert(device);
assert(ret);
LIST_FOREACH(networks, network, manager->networks) {
if (net_match_config(network->match_mac, network->match_path,
network->match_driver, network->match_type,
network->match_name,
udev_device_get_sysattr_value(device, "address"),
udev_device_get_property_value(device, "ID_PATH"),
udev_device_get_driver(device),
udev_device_get_devtype(device),
udev_device_get_sysname(device))) {
log_debug("%s: found matching network '%s'",
udev_device_get_sysname(device),
network->filename);
*ret = network;
return 0;
}
}
*ret = NULL;
return -ENOENT;
}
int network_apply(Manager *manager, Network *network, Link *link) {
int r;
link->network = network;
r = link_configure(link);
if (r < 0)
return r;
if (network->dns) {
r = manager_update_resolv_conf(manager);
if (r < 0)
return r;
}
return 0;
}
int config_parse_bridge(const char *unit,
const char *filename,
unsigned line,
const char *section,
unsigned section_line,
const char *lvalue,
int ltype,
const char *rvalue,
void *data,
void *userdata) {
Network *network = userdata;
Bridge *bridge;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
r = bridge_get(network->manager, rvalue, &bridge);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, EINVAL,
"Bridge is invalid, ignoring assignment: %s", rvalue);
return 0;
}
network->bridge = bridge;
return 0;
}
|
