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1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2013 Tom Gundersen <teg@jklm.no> | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU Lesser General Public License as published by | |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | Lesser General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU Lesser General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
22 | #include "networkd.h" | |
23 | #include "net-util.h" | |
24 | #include "path-util.h" | |
25 | #include "conf-files.h" | |
26 | #include "conf-parser.h" | |
27 | ||
28 | static int network_load_one(Manager *manager, const char *filename) { | |
29 | _cleanup_network_free_ Network *network = NULL; | |
30 | _cleanup_fclose_ FILE *file = NULL; | |
31 | int r; | |
32 | ||
bf1bc670 TA |
33 | assert(manager); |
34 | assert(filename); | |
35 | ||
f579559b TG |
36 | file = fopen(filename, "re"); |
37 | if (!file) { | |
38 | if (errno == ENOENT) | |
39 | return 0; | |
40 | else | |
41 | return errno; | |
42 | } | |
43 | ||
44 | network = new0(Network, 1); | |
45 | if (!network) | |
46 | return log_oom(); | |
47 | ||
5a3eb5a7 TG |
48 | network->manager = manager; |
49 | ||
f579559b | 50 | LIST_HEAD_INIT(network->addresses); |
6ae115c1 | 51 | LIST_HEAD_INIT(network->routes); |
f579559b | 52 | |
6ae115c1 TG |
53 | network->addresses_by_section = hashmap_new(uint64_hash_func, uint64_compare_func); |
54 | if (!network->addresses_by_section) | |
55 | return log_oom(); | |
56 | ||
57 | network->routes_by_section = hashmap_new(uint64_hash_func, uint64_compare_func); | |
58 | if (!network->routes_by_section) | |
59 | return log_oom(); | |
60 | ||
61 | network->filename = strdup(filename); | |
62 | if (!network->filename) | |
63 | return log_oom(); | |
64 | ||
65 | r = config_parse(NULL, filename, file, "Match\0Network\0Address\0Route\0", config_item_perf_lookup, | |
f579559b TG |
66 | (void*) network_gperf_lookup, false, false, network); |
67 | if (r < 0) { | |
68 | log_warning("Could not parse config file %s: %s", filename, strerror(-r)); | |
69 | return r; | |
70 | } else | |
71 | log_debug("Parsed configuration file %s", filename); | |
72 | ||
f579559b TG |
73 | LIST_PREPEND(networks, manager->networks, network); |
74 | network = NULL; | |
75 | ||
76 | return 0; | |
77 | } | |
78 | ||
79 | int network_load(Manager *manager) { | |
80 | Network *network; | |
81 | char **files, **f; | |
82 | int r; | |
83 | ||
84 | assert(manager); | |
85 | ||
86 | while ((network = manager->networks)) | |
87 | network_free(network); | |
88 | ||
f579559b TG |
89 | r = conf_files_list_strv(&files, ".network", NULL, (const char **)manager->network_dirs); |
90 | if (r < 0) { | |
91 | log_error("failed to enumerate network files: %s", strerror(-r)); | |
92 | return r; | |
93 | } | |
94 | ||
95 | STRV_FOREACH_BACKWARDS(f, files) { | |
96 | r = network_load_one(manager, *f); | |
97 | if (r < 0) | |
98 | return r; | |
99 | } | |
100 | ||
101 | strv_free(files); | |
102 | ||
103 | return 0; | |
104 | } | |
105 | ||
f579559b TG |
106 | void network_free(Network *network) { |
107 | Route *route; | |
108 | Address *address; | |
109 | ||
110 | if (!network) | |
111 | return; | |
112 | ||
113 | free(network->filename); | |
114 | ||
115 | free(network->match_mac); | |
116 | free(network->match_path); | |
117 | free(network->match_driver); | |
118 | free(network->match_type); | |
119 | free(network->match_name); | |
120 | ||
121 | free(network->description); | |
122 | ||
123 | while ((route = network->routes)) | |
124 | route_free(route); | |
125 | ||
126 | while ((address = network->addresses)) | |
127 | address_free(address); | |
128 | ||
6ae115c1 TG |
129 | hashmap_free(network->addresses_by_section); |
130 | hashmap_free(network->routes_by_section); | |
131 | ||
f579559b TG |
132 | LIST_REMOVE(networks, network->manager->networks, network); |
133 | ||
134 | free(network); | |
135 | } | |
136 | ||
137 | int network_get(Manager *manager, struct udev_device *device, Network **ret) { | |
138 | Network *network; | |
139 | ||
140 | assert(manager); | |
141 | assert(device); | |
142 | assert(ret); | |
143 | ||
02b59d57 TG |
144 | if (manager_should_reload(manager)) |
145 | manager_load_config(manager); | |
f579559b TG |
146 | |
147 | LIST_FOREACH(networks, network, manager->networks) { | |
148 | if (net_match_config(network->match_mac, network->match_path, | |
149 | network->match_driver, network->match_type, | |
150 | network->match_name, | |
151 | udev_device_get_sysattr_value(device, "address"), | |
152 | udev_device_get_property_value(device, "ID_PATH"), | |
153 | udev_device_get_driver(device), | |
154 | udev_device_get_devtype(device), | |
155 | udev_device_get_sysname(device))) { | |
156 | log_debug("Network file %s applies to link %s", | |
157 | network->filename, | |
158 | udev_device_get_sysname(device)); | |
159 | *ret = network; | |
160 | return 0; | |
161 | } | |
162 | } | |
163 | ||
164 | *ret = NULL; | |
165 | ||
166 | return -ENOENT; | |
167 | } | |
168 | ||
169 | int network_apply(Manager *manager, Network *network, Link *link) { | |
f579559b TG |
170 | int r; |
171 | ||
02b59d57 TG |
172 | log_info("Network '%s' being applied to link '%s'", |
173 | network->description, link->ifname); | |
f579559b TG |
174 | |
175 | link->network = network; | |
176 | ||
f882c247 | 177 | r = link_configure(link); |
f579559b TG |
178 | if (r < 0) |
179 | return r; | |
180 | ||
f579559b TG |
181 | return 0; |
182 | } | |
02b59d57 TG |
183 | |
184 | int config_parse_bridge(const char *unit, | |
185 | const char *filename, | |
186 | unsigned line, | |
187 | const char *section, | |
188 | unsigned section_line, | |
189 | const char *lvalue, | |
190 | int ltype, | |
191 | const char *rvalue, | |
192 | void *data, | |
193 | void *userdata) { | |
194 | Network *network = userdata; | |
195 | Bridge *bridge; | |
196 | int r; | |
197 | ||
198 | assert(filename); | |
199 | assert(lvalue); | |
200 | assert(rvalue); | |
201 | assert(data); | |
202 | ||
203 | r = bridge_get(network->manager, rvalue, &bridge); | |
204 | if (r < 0) { | |
205 | log_syntax(unit, LOG_ERR, filename, line, EINVAL, | |
206 | "Bridge is invalid, ignoring assignment: %s", rvalue); | |
207 | return 0; | |
208 | } | |
209 | ||
210 | network->bridge = bridge; | |
211 | ||
212 | return 0; | |
213 | } |