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Commit | Line | Data |
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c2cc9f0a | 1 | /* |
2 | * lxc: linux Container library | |
3 | * | |
4 | * (C) Copyright IBM Corp. 2007, 2008 | |
5 | * | |
6 | * Authors: | |
9afe19d6 | 7 | * Daniel Lezcano <daniel.lezcano at free.fr> |
c2cc9f0a | 8 | * |
9 | * This library is free software; you can redistribute it and/or | |
10 | * modify it under the terms of the GNU Lesser General Public | |
11 | * License as published by the Free Software Foundation; either | |
12 | * version 2.1 of the License, or (at your option) any later version. | |
13 | * | |
14 | * This library is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
17 | * Lesser General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU Lesser General Public | |
20 | * License along with this library; if not, write to the Free Software | |
250b1eec | 21 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
c2cc9f0a | 22 | */ |
12a50cc6 | 23 | #define _GNU_SOURCE |
c2cc9f0a | 24 | #include <stdio.h> |
25 | #include <stdlib.h> | |
26 | #include <string.h> | |
27 | #include <unistd.h> | |
28 | #include <errno.h> | |
63376d7d | 29 | #include <fcntl.h> |
a84b9932 AV |
30 | #include <ctype.h> |
31 | #include <signal.h> | |
63376d7d | 32 | #include <sys/stat.h> |
c2cc9f0a | 33 | #include <sys/types.h> |
34 | #include <sys/param.h> | |
35 | #include <sys/utsname.h> | |
36 | #include <arpa/inet.h> | |
37 | #include <netinet/in.h> | |
38 | #include <net/if.h> | |
67702c21 | 39 | #include <time.h> |
e1daebd9 | 40 | #include <dirent.h> |
c2cc9f0a | 41 | |
b2718c72 | 42 | #include "parse.h" |
6ff05e18 | 43 | #include "config.h" |
525f0002 | 44 | #include "confile.h" |
26c39028 | 45 | #include "utils.h" |
f2363e38 ÇO |
46 | #include "log.h" |
47 | #include "conf.h" | |
72d0e1cb | 48 | #include "network.h" |
58e0f57d | 49 | #include "lxcseccomp.h" |
36eb9bde | 50 | |
6ff05e18 SG |
51 | #if HAVE_SYS_PERSONALITY_H |
52 | #include <sys/personality.h> | |
53 | #endif | |
54 | ||
36eb9bde | 55 | lxc_log_define(lxc_confile, lxc); |
576f946d | 56 | |
12a50cc6 DE |
57 | static int config_personality(const char *, const char *, struct lxc_conf *); |
58 | static int config_pts(const char *, const char *, struct lxc_conf *); | |
59 | static int config_tty(const char *, const char *, struct lxc_conf *); | |
60 | static int config_ttydir(const char *, const char *, struct lxc_conf *); | |
7e0e1d94 | 61 | static int config_kmsg(const char *, const char *, struct lxc_conf *); |
fe4de9a6 | 62 | static int config_lsm_aa_profile(const char *, const char *, struct lxc_conf *); |
7aff4f43 | 63 | static int config_lsm_aa_incomplete(const char *, const char *, struct lxc_conf *); |
fe4de9a6 | 64 | static int config_lsm_se_context(const char *, const char *, struct lxc_conf *); |
12a50cc6 | 65 | static int config_cgroup(const char *, const char *, struct lxc_conf *); |
f6d3e3e4 | 66 | static int config_idmap(const char *, const char *, struct lxc_conf *); |
4a85ce2a SH |
67 | static int config_loglevel(const char *, const char *, struct lxc_conf *); |
68 | static int config_logfile(const char *, const char *, struct lxc_conf *); | |
12a50cc6 DE |
69 | static int config_mount(const char *, const char *, struct lxc_conf *); |
70 | static int config_rootfs(const char *, const char *, struct lxc_conf *); | |
71 | static int config_rootfs_mount(const char *, const char *, struct lxc_conf *); | |
a17b1e65 | 72 | static int config_rootfs_options(const char *, const char *, struct lxc_conf *); |
12a50cc6 DE |
73 | static int config_pivotdir(const char *, const char *, struct lxc_conf *); |
74 | static int config_utsname(const char *, const char *, struct lxc_conf *); | |
75 | static int config_hook(const char *, const char *, struct lxc_conf *lxc_conf); | |
6b0d5538 | 76 | static int config_network(const char *, const char *, struct lxc_conf *); |
12a50cc6 DE |
77 | static int config_network_type(const char *, const char *, struct lxc_conf *); |
78 | static int config_network_flags(const char *, const char *, struct lxc_conf *); | |
79 | static int config_network_link(const char *, const char *, struct lxc_conf *); | |
80 | static int config_network_name(const char *, const char *, struct lxc_conf *); | |
81 | static int config_network_veth_pair(const char *, const char *, struct lxc_conf *); | |
82 | static int config_network_macvlan_mode(const char *, const char *, struct lxc_conf *); | |
83 | static int config_network_hwaddr(const char *, const char *, struct lxc_conf *); | |
84 | static int config_network_vlan_id(const char *, const char *, struct lxc_conf *); | |
85 | static int config_network_mtu(const char *, const char *, struct lxc_conf *); | |
86 | static int config_network_ipv4(const char *, const char *, struct lxc_conf *); | |
87 | static int config_network_ipv4_gateway(const char *, const char *, struct lxc_conf *); | |
8fc8295a DE |
88 | static int config_network_script_up(const char *, const char *, struct lxc_conf *); |
89 | static int config_network_script_down(const char *, const char *, struct lxc_conf *); | |
12a50cc6 DE |
90 | static int config_network_ipv6(const char *, const char *, struct lxc_conf *); |
91 | static int config_network_ipv6_gateway(const char *, const char *, struct lxc_conf *); | |
92 | static int config_cap_drop(const char *, const char *, struct lxc_conf *); | |
1fb86a7c | 93 | static int config_cap_keep(const char *, const char *, struct lxc_conf *); |
12a50cc6 | 94 | static int config_console(const char *, const char *, struct lxc_conf *); |
96f15ca1 | 95 | static int config_console_logfile(const char *, const char *, struct lxc_conf *); |
12a50cc6 DE |
96 | static int config_seccomp(const char *, const char *, struct lxc_conf *); |
97 | static int config_includefile(const char *, const char *, struct lxc_conf *); | |
98 | static int config_network_nic(const char *, const char *, struct lxc_conf *); | |
99 | static int config_autodev(const char *, const char *, struct lxc_conf *); | |
f0f1d8c0 | 100 | static int config_haltsignal(const char *, const char *, struct lxc_conf *); |
a84b9932 | 101 | static int config_stopsignal(const char *, const char *, struct lxc_conf *); |
ee1e7aa0 SG |
102 | static int config_start(const char *, const char *, struct lxc_conf *); |
103 | static int config_group(const char *, const char *, struct lxc_conf *); | |
7c661726 | 104 | static int config_environment(const char *, const char *, struct lxc_conf *); |
67c660d0 | 105 | static int config_init_cmd(const char *, const char *, struct lxc_conf *); |
c2cc9f0a | 106 | |
72d0e1cb | 107 | static struct lxc_config_t config[] = { |
576f946d | 108 | |
cccc74b5 | 109 | { "lxc.arch", config_personality }, |
e892973e DL |
110 | { "lxc.pts", config_pts }, |
111 | { "lxc.tty", config_tty }, | |
7c6ef2a2 | 112 | { "lxc.devttydir", config_ttydir }, |
7e0e1d94 | 113 | { "lxc.kmsg", config_kmsg }, |
fe4de9a6 | 114 | { "lxc.aa_profile", config_lsm_aa_profile }, |
7aff4f43 | 115 | { "lxc.aa_allow_incomplete", config_lsm_aa_incomplete }, |
fe4de9a6 | 116 | { "lxc.se_context", config_lsm_se_context }, |
e892973e | 117 | { "lxc.cgroup", config_cgroup }, |
f6d3e3e4 | 118 | { "lxc.id_map", config_idmap }, |
4a85ce2a SH |
119 | { "lxc.loglevel", config_loglevel }, |
120 | { "lxc.logfile", config_logfile }, | |
e892973e | 121 | { "lxc.mount", config_mount }, |
23b7ea69 | 122 | { "lxc.rootfs.mount", config_rootfs_mount }, |
a17b1e65 | 123 | { "lxc.rootfs.options", config_rootfs_options }, |
e892973e | 124 | { "lxc.rootfs", config_rootfs }, |
bf601689 | 125 | { "lxc.pivotdir", config_pivotdir }, |
e892973e | 126 | { "lxc.utsname", config_utsname }, |
26ddeedd | 127 | { "lxc.hook.pre-start", config_hook }, |
12a50cc6 | 128 | { "lxc.hook.pre-mount", config_hook }, |
26ddeedd | 129 | { "lxc.hook.mount", config_hook }, |
f7bee6c6 | 130 | { "lxc.hook.autodev", config_hook }, |
26ddeedd SH |
131 | { "lxc.hook.start", config_hook }, |
132 | { "lxc.hook.post-stop", config_hook }, | |
148e91f5 | 133 | { "lxc.hook.clone", config_hook }, |
6b0d5538 | 134 | { "lxc.hook", config_hook }, |
e892973e DL |
135 | { "lxc.network.type", config_network_type }, |
136 | { "lxc.network.flags", config_network_flags }, | |
137 | { "lxc.network.link", config_network_link }, | |
138 | { "lxc.network.name", config_network_name }, | |
139 | { "lxc.network.macvlan.mode", config_network_macvlan_mode }, | |
140 | { "lxc.network.veth.pair", config_network_veth_pair }, | |
8fc8295a DE |
141 | { "lxc.network.script.up", config_network_script_up }, |
142 | { "lxc.network.script.down", config_network_script_down }, | |
e892973e DL |
143 | { "lxc.network.hwaddr", config_network_hwaddr }, |
144 | { "lxc.network.mtu", config_network_mtu }, | |
145 | { "lxc.network.vlan.id", config_network_vlan_id }, | |
f8fee0e2 | 146 | { "lxc.network.ipv4.gateway", config_network_ipv4_gateway }, |
e892973e | 147 | { "lxc.network.ipv4", config_network_ipv4 }, |
f8fee0e2 | 148 | { "lxc.network.ipv6.gateway", config_network_ipv6_gateway }, |
e892973e | 149 | { "lxc.network.ipv6", config_network_ipv6 }, |
72d0e1cb SG |
150 | /* config_network_nic must come after all other 'lxc.network.*' entries */ |
151 | { "lxc.network.", config_network_nic }, | |
6b0d5538 | 152 | { "lxc.network", config_network }, |
81810dd1 | 153 | { "lxc.cap.drop", config_cap_drop }, |
1fb86a7c | 154 | { "lxc.cap.keep", config_cap_keep }, |
96f15ca1 | 155 | { "lxc.console.logfile", config_console_logfile }, |
63376d7d | 156 | { "lxc.console", config_console }, |
8f2c3a70 | 157 | { "lxc.seccomp", config_seccomp }, |
09ad6246 | 158 | { "lxc.include", config_includefile }, |
c6883f38 | 159 | { "lxc.autodev", config_autodev }, |
f0f1d8c0 | 160 | { "lxc.haltsignal", config_haltsignal }, |
a84b9932 | 161 | { "lxc.stopsignal", config_stopsignal }, |
ee1e7aa0 SG |
162 | { "lxc.start.auto", config_start }, |
163 | { "lxc.start.delay", config_start }, | |
164 | { "lxc.start.order", config_start }, | |
165 | { "lxc.group", config_group }, | |
7c661726 | 166 | { "lxc.environment", config_environment }, |
67c660d0 | 167 | { "lxc.init_cmd", config_init_cmd }, |
a84b9932 AV |
168 | }; |
169 | ||
170 | struct signame { | |
171 | int num; | |
74a3920a | 172 | const char *name; |
a84b9932 AV |
173 | }; |
174 | ||
74a3920a | 175 | static const struct signame signames[] = { |
a84b9932 AV |
176 | { SIGHUP, "HUP" }, |
177 | { SIGINT, "INT" }, | |
178 | { SIGQUIT, "QUIT" }, | |
179 | { SIGILL, "ILL" }, | |
180 | { SIGABRT, "ABRT" }, | |
181 | { SIGFPE, "FPE" }, | |
182 | { SIGKILL, "KILL" }, | |
183 | { SIGSEGV, "SEGV" }, | |
184 | { SIGPIPE, "PIPE" }, | |
185 | { SIGALRM, "ALRM" }, | |
186 | { SIGTERM, "TERM" }, | |
187 | { SIGUSR1, "USR1" }, | |
188 | { SIGUSR2, "USR2" }, | |
189 | { SIGCHLD, "CHLD" }, | |
190 | { SIGCONT, "CONT" }, | |
191 | { SIGSTOP, "STOP" }, | |
192 | { SIGTSTP, "TSTP" }, | |
193 | { SIGTTIN, "TTIN" }, | |
194 | { SIGTTOU, "TTOU" }, | |
c2cc9f0a | 195 | }; |
196 | ||
72d0e1cb | 197 | static const size_t config_size = sizeof(config)/sizeof(struct lxc_config_t); |
c2cc9f0a | 198 | |
72d0e1cb | 199 | extern struct lxc_config_t *lxc_getconfig(const char *key) |
c2cc9f0a | 200 | { |
201 | int i; | |
202 | ||
203 | for (i = 0; i < config_size; i++) | |
a871ff6b | 204 | if (!strncmp(config[i].name, key, |
c2cc9f0a | 205 | strlen(config[i].name))) |
206 | return &config[i]; | |
207 | return NULL; | |
208 | } | |
209 | ||
72d0e1cb SG |
210 | #define strprint(str, inlen, ...) \ |
211 | do { \ | |
212 | len = snprintf(str, inlen, ##__VA_ARGS__); \ | |
213 | if (len < 0) { SYSERROR("snprintf"); return -1; }; \ | |
214 | fulllen += len; \ | |
215 | if (inlen > 0) { \ | |
216 | if (str) str += len; \ | |
217 | inlen -= len; \ | |
218 | if (inlen < 0) inlen = 0; \ | |
219 | } \ | |
220 | } while (0); | |
221 | ||
222 | int lxc_listconfigs(char *retv, int inlen) | |
223 | { | |
224 | int i, fulllen = 0, len; | |
225 | ||
226 | if (!retv) | |
227 | inlen = 0; | |
228 | else | |
229 | memset(retv, 0, inlen); | |
230 | for (i = 0; i < config_size; i++) { | |
231 | char *s = config[i].name; | |
232 | if (s[strlen(s)-1] == '.') | |
233 | continue; | |
234 | strprint(retv, inlen, "%s\n", s); | |
235 | } | |
236 | return fulllen; | |
237 | } | |
238 | ||
6d03d92a DE |
239 | static int config_string_item(char **conf_item, const char *value) |
240 | { | |
241 | char *new_value; | |
242 | ||
d6eca240 | 243 | if (!value || strlen(value) == 0) { |
f10fad2f | 244 | free(*conf_item); |
d6eca240 | 245 | *conf_item = NULL; |
6d03d92a | 246 | return 0; |
d6eca240 | 247 | } |
6d03d92a DE |
248 | |
249 | new_value = strdup(value); | |
250 | if (!new_value) { | |
251 | SYSERROR("failed to strdup '%s': %m", value); | |
252 | return -1; | |
253 | } | |
254 | ||
f10fad2f | 255 | free(*conf_item); |
6d03d92a DE |
256 | *conf_item = new_value; |
257 | return 0; | |
258 | } | |
259 | ||
260 | static int config_string_item_max(char **conf_item, const char *value, | |
261 | size_t max) | |
262 | { | |
263 | if (strlen(value) >= max) { | |
a5a82508 | 264 | ERROR("%s is too long (>= %lu)", value, (unsigned long)max); |
6d03d92a DE |
265 | return -1; |
266 | } | |
267 | ||
268 | return config_string_item(conf_item, value); | |
269 | } | |
270 | ||
271 | static int config_path_item(char **conf_item, const char *value) | |
272 | { | |
273 | return config_string_item_max(conf_item, value, PATH_MAX); | |
274 | } | |
275 | ||
72d0e1cb SG |
276 | /* |
277 | * config entry is something like "lxc.network.0.ipv4" | |
278 | * the key 'lxc.network.' was found. So we make sure next | |
279 | * comes an integer, find the right callback (by rewriting | |
280 | * the key), and call it. | |
281 | */ | |
12a50cc6 | 282 | static int config_network_nic(const char *key, const char *value, |
72d0e1cb SG |
283 | struct lxc_conf *lxc_conf) |
284 | { | |
285 | char *copy = strdup(key), *p; | |
286 | int ret = -1; | |
287 | struct lxc_config_t *config; | |
288 | ||
289 | if (!copy) { | |
290 | SYSERROR("failed to allocate memory"); | |
291 | return -1; | |
292 | } | |
293 | /* | |
294 | * ok we know that to get here we've got "lxc.network." | |
295 | * and it isn't any of the other network entries. So | |
296 | * after the second . should come an integer (# of defined | |
297 | * nic) followed by a valid entry. | |
298 | */ | |
299 | if (*(key+12) < '0' || *(key+12) > '9') | |
300 | goto out; | |
46cd2845 | 301 | p = strchr(key+12, '.'); |
72d0e1cb SG |
302 | if (!p) |
303 | goto out; | |
304 | strcpy(copy+12, p+1); | |
305 | config = lxc_getconfig(copy); | |
306 | if (!config) { | |
307 | ERROR("unknown key %s", key); | |
308 | goto out; | |
309 | } | |
310 | ret = config->cb(key, value, lxc_conf); | |
311 | ||
312 | out: | |
313 | free(copy); | |
314 | return ret; | |
315 | } | |
316 | ||
6b0d5538 SH |
317 | static int config_network(const char *key, const char *value, |
318 | struct lxc_conf *lxc_conf) | |
319 | { | |
320 | if (value && strlen(value)) { | |
321 | ERROR("lxc.network must not have a value"); | |
322 | return -1; | |
323 | } | |
324 | ||
325 | return lxc_clear_config_network(lxc_conf); | |
326 | } | |
327 | ||
261658e8 BP |
328 | static int macvlan_mode(int *valuep, const char *value); |
329 | ||
12a50cc6 | 330 | static int config_network_type(const char *key, const char *value, |
e892973e | 331 | struct lxc_conf *lxc_conf) |
c2cc9f0a | 332 | { |
5f4535a3 | 333 | struct lxc_list *network = &lxc_conf->network; |
c2cc9f0a | 334 | struct lxc_netdev *netdev; |
335 | struct lxc_list *list; | |
c2cc9f0a | 336 | |
7d0eb87e SH |
337 | if (!value || strlen(value) == 0) |
338 | return lxc_clear_config_network(lxc_conf); | |
339 | ||
c2cc9f0a | 340 | netdev = malloc(sizeof(*netdev)); |
341 | if (!netdev) { | |
36eb9bde | 342 | SYSERROR("failed to allocate memory"); |
c2cc9f0a | 343 | return -1; |
344 | } | |
345 | ||
82d5ae15 | 346 | memset(netdev, 0, sizeof(*netdev)); |
c2cc9f0a | 347 | lxc_list_init(&netdev->ipv4); |
348 | lxc_list_init(&netdev->ipv6); | |
c2cc9f0a | 349 | |
350 | list = malloc(sizeof(*list)); | |
351 | if (!list) { | |
36eb9bde | 352 | SYSERROR("failed to allocate memory"); |
022de5f3 | 353 | free(netdev); |
c2cc9f0a | 354 | return -1; |
355 | } | |
356 | ||
357 | lxc_list_init(list); | |
5f4535a3 | 358 | list->elem = netdev; |
c2cc9f0a | 359 | |
bac89583 | 360 | lxc_list_add_tail(network, list); |
a871ff6b | 361 | |
c2cc9f0a | 362 | if (!strcmp(value, "veth")) |
24654103 | 363 | netdev->type = LXC_NET_VETH; |
261658e8 | 364 | else if (!strcmp(value, "macvlan")) { |
24654103 | 365 | netdev->type = LXC_NET_MACVLAN; |
261658e8 BP |
366 | macvlan_mode(&netdev->priv.macvlan_attr.mode, "private"); |
367 | } | |
26c39028 | 368 | else if (!strcmp(value, "vlan")) |
24654103 | 369 | netdev->type = LXC_NET_VLAN; |
c2cc9f0a | 370 | else if (!strcmp(value, "phys")) |
24654103 | 371 | netdev->type = LXC_NET_PHYS; |
5f58350a | 372 | else if (!strcmp(value, "empty")) |
24654103 | 373 | netdev->type = LXC_NET_EMPTY; |
26b797f3 SH |
374 | else if (!strcmp(value, "none")) |
375 | netdev->type = LXC_NET_NONE; | |
c2cc9f0a | 376 | else { |
36eb9bde | 377 | ERROR("invalid network type %s", value); |
c2cc9f0a | 378 | return -1; |
379 | } | |
380 | return 0; | |
381 | } | |
382 | ||
a059591e DL |
383 | static int config_ip_prefix(struct in_addr *addr) |
384 | { | |
385 | if (IN_CLASSA(addr->s_addr)) | |
386 | return 32 - IN_CLASSA_NSHIFT; | |
387 | if (IN_CLASSB(addr->s_addr)) | |
388 | return 32 - IN_CLASSB_NSHIFT; | |
389 | if (IN_CLASSC(addr->s_addr)) | |
390 | return 32 - IN_CLASSC_NSHIFT; | |
391 | ||
392 | return 0; | |
393 | } | |
394 | ||
72d0e1cb SG |
395 | /* |
396 | * if you have p="lxc.network.0.link", pass it p+12 | |
397 | * to get back '0' (the index of the nic) | |
398 | */ | |
399 | static int get_network_netdev_idx(const char *key) | |
400 | { | |
401 | int ret, idx; | |
402 | ||
403 | if (*key < '0' || *key > '9') | |
404 | return -1; | |
405 | ret = sscanf(key, "%d", &idx); | |
406 | if (ret != 1) | |
407 | return -1; | |
408 | return idx; | |
409 | } | |
410 | ||
411 | /* | |
412 | * if you have p="lxc.network.0", pass this p+12 and it will return | |
413 | * the netdev of the first configured nic | |
414 | */ | |
415 | static struct lxc_netdev *get_netdev_from_key(const char *key, | |
416 | struct lxc_list *network) | |
417 | { | |
418 | int i = 0, idx = get_network_netdev_idx(key); | |
419 | struct lxc_netdev *netdev = NULL; | |
420 | struct lxc_list *it; | |
421 | if (idx == -1) | |
422 | return NULL; | |
423 | lxc_list_for_each(it, network) { | |
424 | if (idx == i++) { | |
425 | netdev = it->elem; | |
426 | break; | |
427 | } | |
428 | } | |
429 | return netdev; | |
430 | } | |
431 | ||
12a50cc6 DE |
432 | extern int lxc_list_nicconfigs(struct lxc_conf *c, const char *key, |
433 | char *retv, int inlen) | |
72d0e1cb SG |
434 | { |
435 | struct lxc_netdev *netdev; | |
436 | int fulllen = 0, len; | |
437 | ||
438 | netdev = get_netdev_from_key(key+12, &c->network); | |
439 | if (!netdev) | |
440 | return -1; | |
441 | ||
442 | if (!retv) | |
443 | inlen = 0; | |
444 | else | |
445 | memset(retv, 0, inlen); | |
446 | ||
447 | strprint(retv, inlen, "script.up\n"); | |
8fc8295a | 448 | strprint(retv, inlen, "script.down\n"); |
72d0e1cb SG |
449 | if (netdev->type != LXC_NET_EMPTY) { |
450 | strprint(retv, inlen, "flags\n"); | |
451 | strprint(retv, inlen, "link\n"); | |
452 | strprint(retv, inlen, "name\n"); | |
453 | strprint(retv, inlen, "hwaddr\n"); | |
454 | strprint(retv, inlen, "mtu\n"); | |
455 | strprint(retv, inlen, "ipv6\n"); | |
9eaf8a59 | 456 | strprint(retv, inlen, "ipv6.gateway\n"); |
72d0e1cb | 457 | strprint(retv, inlen, "ipv4\n"); |
9eaf8a59 | 458 | strprint(retv, inlen, "ipv4.gateway\n"); |
72d0e1cb SG |
459 | } |
460 | switch(netdev->type) { | |
461 | case LXC_NET_VETH: | |
462 | strprint(retv, inlen, "veth.pair\n"); | |
463 | break; | |
464 | case LXC_NET_MACVLAN: | |
465 | strprint(retv, inlen, "macvlan.mode\n"); | |
466 | break; | |
467 | case LXC_NET_VLAN: | |
468 | strprint(retv, inlen, "vlan.id\n"); | |
469 | break; | |
470 | case LXC_NET_PHYS: | |
471 | break; | |
472 | } | |
473 | return fulllen; | |
474 | } | |
475 | ||
16950ecb DL |
476 | static struct lxc_netdev *network_netdev(const char *key, const char *value, |
477 | struct lxc_list *network) | |
c2cc9f0a | 478 | { |
72d0e1cb | 479 | struct lxc_netdev *netdev = NULL; |
c2cc9f0a | 480 | |
5f4535a3 | 481 | if (lxc_list_empty(network)) { |
16950ecb DL |
482 | ERROR("network is not created for '%s' = '%s' option", |
483 | key, value); | |
33c945e0 | 484 | return NULL; |
c2cc9f0a | 485 | } |
486 | ||
72d0e1cb SG |
487 | if (get_network_netdev_idx(key+12) == -1) |
488 | netdev = lxc_list_last_elem(network); | |
489 | else | |
490 | netdev = get_netdev_from_key(key+12, network); | |
491 | ||
5f4535a3 | 492 | if (!netdev) { |
16950ecb DL |
493 | ERROR("no network device defined for '%s' = '%s' option", |
494 | key, value); | |
33c945e0 | 495 | return NULL; |
c2cc9f0a | 496 | } |
497 | ||
33c945e0 | 498 | return netdev; |
c2cc9f0a | 499 | } |
500 | ||
12a50cc6 | 501 | static int network_ifname(char **valuep, const char *value) |
c2cc9f0a | 502 | { |
c9bb9a85 | 503 | return config_string_item_max(valuep, value, IFNAMSIZ); |
c2cc9f0a | 504 | } |
505 | ||
e892973e DL |
506 | #ifndef MACVLAN_MODE_PRIVATE |
507 | # define MACVLAN_MODE_PRIVATE 1 | |
508 | #endif | |
509 | ||
510 | #ifndef MACVLAN_MODE_VEPA | |
511 | # define MACVLAN_MODE_VEPA 2 | |
512 | #endif | |
513 | ||
514 | #ifndef MACVLAN_MODE_BRIDGE | |
515 | # define MACVLAN_MODE_BRIDGE 4 | |
516 | #endif | |
517 | ||
12a50cc6 | 518 | static int macvlan_mode(int *valuep, const char *value) |
e892973e DL |
519 | { |
520 | struct mc_mode { | |
521 | char *name; | |
522 | int mode; | |
523 | } m[] = { | |
524 | { "private", MACVLAN_MODE_PRIVATE }, | |
525 | { "vepa", MACVLAN_MODE_VEPA }, | |
526 | { "bridge", MACVLAN_MODE_BRIDGE }, | |
527 | }; | |
528 | ||
529 | int i; | |
530 | ||
531 | for (i = 0; i < sizeof(m)/sizeof(m[0]); i++) { | |
532 | if (strcmp(m[i].name, value)) | |
533 | continue; | |
534 | ||
535 | *valuep = m[i].mode; | |
536 | return 0; | |
537 | } | |
538 | ||
539 | return -1; | |
540 | } | |
541 | ||
508c263e SH |
542 | static int rand_complete_hwaddr(char *hwaddr) |
543 | { | |
544 | const char hex[] = "0123456789abcdef"; | |
545 | char *curs = hwaddr; | |
546 | ||
547 | #ifndef HAVE_RAND_R | |
548 | randseed(true); | |
549 | #else | |
550 | unsigned int seed=randseed(false); | |
551 | #endif | |
e6744e9b | 552 | while (*curs != '\0' && *curs != '\n') |
508c263e SH |
553 | { |
554 | if ( *curs == 'x' || *curs == 'X' ) { | |
555 | if (curs - hwaddr == 1) { | |
556 | //ensure address is unicast | |
557 | #ifdef HAVE_RAND_R | |
558 | *curs = hex[rand_r(&seed) & 0x0E]; | |
559 | } else { | |
560 | *curs = hex[rand_r(&seed) & 0x0F]; | |
561 | #else | |
562 | *curs = hex[rand() & 0x0E]; | |
563 | } else { | |
564 | *curs = hex[rand() & 0x0F]; | |
565 | #endif | |
566 | } | |
567 | } | |
568 | curs++; | |
569 | } | |
570 | return 0; | |
571 | } | |
572 | ||
12a50cc6 | 573 | static int config_network_flags(const char *key, const char *value, |
33c945e0 | 574 | struct lxc_conf *lxc_conf) |
c2cc9f0a | 575 | { |
c2cc9f0a | 576 | struct lxc_netdev *netdev; |
577 | ||
16950ecb | 578 | netdev = network_netdev(key, value, &lxc_conf->network); |
33c945e0 | 579 | if (!netdev) |
c2cc9f0a | 580 | return -1; |
c2cc9f0a | 581 | |
33c945e0 | 582 | netdev->flags |= IFF_UP; |
c2cc9f0a | 583 | |
33c945e0 MT |
584 | return 0; |
585 | } | |
586 | ||
12a50cc6 | 587 | static int config_network_link(const char *key, const char *value, |
33c945e0 MT |
588 | struct lxc_conf *lxc_conf) |
589 | { | |
590 | struct lxc_netdev *netdev; | |
591 | ||
16950ecb | 592 | netdev = network_netdev(key, value, &lxc_conf->network); |
33c945e0 | 593 | if (!netdev) |
c2cc9f0a | 594 | return -1; |
c2cc9f0a | 595 | |
33c945e0 | 596 | return network_ifname(&netdev->link, value); |
c2cc9f0a | 597 | } |
598 | ||
12a50cc6 | 599 | static int config_network_name(const char *key, const char *value, |
33c945e0 | 600 | struct lxc_conf *lxc_conf) |
c2cc9f0a | 601 | { |
c2cc9f0a | 602 | struct lxc_netdev *netdev; |
603 | ||
16950ecb | 604 | netdev = network_netdev(key, value, &lxc_conf->network); |
33c945e0 | 605 | if (!netdev) |
c2cc9f0a | 606 | return -1; |
c2cc9f0a | 607 | |
33c945e0 MT |
608 | return network_ifname(&netdev->name, value); |
609 | } | |
610 | ||
12a50cc6 | 611 | static int config_network_veth_pair(const char *key, const char *value, |
e892973e DL |
612 | struct lxc_conf *lxc_conf) |
613 | { | |
614 | struct lxc_netdev *netdev; | |
615 | ||
616 | netdev = network_netdev(key, value, &lxc_conf->network); | |
617 | if (!netdev) | |
618 | return -1; | |
619 | ||
c5316d60 | 620 | if (netdev->type != LXC_NET_VETH) { |
128d327a | 621 | ERROR("Invalid veth pair for a non-veth netdev"); |
c5316d60 SH |
622 | return -1; |
623 | } | |
e892973e DL |
624 | return network_ifname(&netdev->priv.veth_attr.pair, value); |
625 | } | |
626 | ||
12a50cc6 | 627 | static int config_network_macvlan_mode(const char *key, const char *value, |
e892973e | 628 | struct lxc_conf *lxc_conf) |
8634bc19 MT |
629 | { |
630 | struct lxc_netdev *netdev; | |
631 | ||
632 | netdev = network_netdev(key, value, &lxc_conf->network); | |
633 | if (!netdev) | |
634 | return -1; | |
635 | ||
c5316d60 | 636 | if (netdev->type != LXC_NET_MACVLAN) { |
128d327a | 637 | ERROR("Invalid macvlan.mode for a non-macvlan netdev"); |
c5316d60 SH |
638 | return -1; |
639 | } | |
e892973e | 640 | return macvlan_mode(&netdev->priv.macvlan_attr.mode, value); |
8634bc19 MT |
641 | } |
642 | ||
12a50cc6 | 643 | static int config_network_hwaddr(const char *key, const char *value, |
33c945e0 MT |
644 | struct lxc_conf *lxc_conf) |
645 | { | |
646 | struct lxc_netdev *netdev; | |
647 | ||
508c263e SH |
648 | char *new_value = strdup(value); |
649 | if (!new_value) { | |
650 | SYSERROR("failed to strdup '%s': %m", value); | |
c2cc9f0a | 651 | return -1; |
508c263e SH |
652 | } |
653 | rand_complete_hwaddr(new_value); | |
c2cc9f0a | 654 | |
508c263e SH |
655 | netdev = network_netdev(key, new_value, &lxc_conf->network); |
656 | if (!netdev) { | |
657 | free(new_value); | |
658 | return -1; | |
659 | }; | |
660 | ||
661 | if (!new_value || strlen(new_value) == 0) { | |
662 | free(new_value); | |
663 | netdev->hwaddr = NULL; | |
664 | return 0; | |
665 | } | |
666 | ||
667 | netdev->hwaddr = new_value; | |
668 | return 0; | |
c2cc9f0a | 669 | } |
670 | ||
12a50cc6 | 671 | static int config_network_vlan_id(const char *key, const char *value, |
26c39028 JHS |
672 | struct lxc_conf *lxc_conf) |
673 | { | |
674 | struct lxc_netdev *netdev; | |
675 | ||
676 | netdev = network_netdev(key, value, &lxc_conf->network); | |
677 | if (!netdev) | |
678 | return -1; | |
679 | ||
c5316d60 | 680 | if (netdev->type != LXC_NET_VLAN) { |
128d327a | 681 | ERROR("Invalid vlan.id for a non-macvlan netdev"); |
c5316d60 SH |
682 | return -1; |
683 | } | |
f6cc1de1 | 684 | if (get_u16(&netdev->priv.vlan_attr.vid, value, 0)) |
26c39028 JHS |
685 | return -1; |
686 | ||
687 | return 0; | |
688 | } | |
689 | ||
12a50cc6 | 690 | static int config_network_mtu(const char *key, const char *value, |
33c945e0 | 691 | struct lxc_conf *lxc_conf) |
442cbbe6 | 692 | { |
442cbbe6 TR |
693 | struct lxc_netdev *netdev; |
694 | ||
16950ecb | 695 | netdev = network_netdev(key, value, &lxc_conf->network); |
33c945e0 | 696 | if (!netdev) |
442cbbe6 | 697 | return -1; |
442cbbe6 | 698 | |
6d03d92a | 699 | return config_string_item(&netdev->mtu, value); |
442cbbe6 TR |
700 | } |
701 | ||
12a50cc6 | 702 | static int config_network_ipv4(const char *key, const char *value, |
33c945e0 | 703 | struct lxc_conf *lxc_conf) |
c2cc9f0a | 704 | { |
c2cc9f0a | 705 | struct lxc_netdev *netdev; |
33c945e0 | 706 | struct lxc_inetdev *inetdev; |
c2cc9f0a | 707 | struct lxc_list *list; |
708 | char *cursor, *slash, *addr = NULL, *bcast = NULL, *prefix = NULL; | |
709 | ||
16950ecb | 710 | netdev = network_netdev(key, value, &lxc_conf->network); |
33c945e0 | 711 | if (!netdev) |
c2cc9f0a | 712 | return -1; |
c2cc9f0a | 713 | |
714 | inetdev = malloc(sizeof(*inetdev)); | |
715 | if (!inetdev) { | |
36eb9bde | 716 | SYSERROR("failed to allocate ipv4 address"); |
c2cc9f0a | 717 | return -1; |
718 | } | |
719 | memset(inetdev, 0, sizeof(*inetdev)); | |
720 | ||
721 | list = malloc(sizeof(*list)); | |
722 | if (!list) { | |
36eb9bde | 723 | SYSERROR("failed to allocate memory"); |
53719062 | 724 | free(inetdev); |
c2cc9f0a | 725 | return -1; |
726 | } | |
727 | ||
728 | lxc_list_init(list); | |
729 | list->elem = inetdev; | |
730 | ||
956edc54 SG |
731 | addr = strdup(value); |
732 | if (!addr) { | |
733 | ERROR("no address specified"); | |
53719062 SH |
734 | free(inetdev); |
735 | free(list); | |
956edc54 SG |
736 | return -1; |
737 | } | |
c2cc9f0a | 738 | |
739 | cursor = strstr(addr, " "); | |
740 | if (cursor) { | |
741 | *cursor = '\0'; | |
742 | bcast = cursor + 1; | |
743 | } | |
744 | ||
745 | slash = strstr(addr, "/"); | |
746 | if (slash) { | |
747 | *slash = '\0'; | |
748 | prefix = slash + 1; | |
749 | } | |
750 | ||
c2cc9f0a | 751 | if (!inet_pton(AF_INET, addr, &inetdev->addr)) { |
36eb9bde | 752 | SYSERROR("invalid ipv4 address: %s", value); |
53719062 | 753 | free(inetdev); |
956edc54 | 754 | free(addr); |
53719062 | 755 | free(list); |
c2cc9f0a | 756 | return -1; |
757 | } | |
758 | ||
0093bb8c DL |
759 | if (bcast && !inet_pton(AF_INET, bcast, &inetdev->bcast)) { |
760 | SYSERROR("invalid ipv4 broadcast address: %s", value); | |
53719062 SH |
761 | free(inetdev); |
762 | free(list); | |
956edc54 | 763 | free(addr); |
0093bb8c DL |
764 | return -1; |
765 | } | |
c2cc9f0a | 766 | |
a059591e DL |
767 | /* no prefix specified, determine it from the network class */ |
768 | inetdev->prefix = prefix ? atoi(prefix) : | |
769 | config_ip_prefix(&inetdev->addr); | |
770 | ||
b3df193c | 771 | /* if no broadcast address, let compute one from the |
0093bb8c DL |
772 | * prefix and address |
773 | */ | |
774 | if (!bcast) { | |
1b7d4743 DL |
775 | inetdev->bcast.s_addr = inetdev->addr.s_addr; |
776 | inetdev->bcast.s_addr |= | |
777 | htonl(INADDR_BROADCAST >> inetdev->prefix); | |
0093bb8c | 778 | } |
c2cc9f0a | 779 | |
8538f388 | 780 | lxc_list_add_tail(&netdev->ipv4, list); |
c2cc9f0a | 781 | |
956edc54 | 782 | free(addr); |
c2cc9f0a | 783 | return 0; |
784 | } | |
785 | ||
12a50cc6 | 786 | static int config_network_ipv4_gateway(const char *key, const char *value, |
f8fee0e2 MK |
787 | struct lxc_conf *lxc_conf) |
788 | { | |
789 | struct lxc_netdev *netdev; | |
f8fee0e2 MK |
790 | |
791 | netdev = network_netdev(key, value, &lxc_conf->network); | |
792 | if (!netdev) | |
793 | return -1; | |
794 | ||
e088e926 | 795 | free(netdev->ipv4_gateway); |
f8fee0e2 | 796 | |
e088e926 SG |
797 | if (!value || strlen(value) == 0) { |
798 | netdev->ipv4_gateway = NULL; | |
799 | } else if (!strcmp(value, "auto")) { | |
19a26f82 MK |
800 | netdev->ipv4_gateway = NULL; |
801 | netdev->ipv4_gateway_auto = true; | |
802 | } else { | |
e088e926 SG |
803 | struct in_addr *gw; |
804 | ||
805 | gw = malloc(sizeof(*gw)); | |
806 | if (!gw) { | |
807 | SYSERROR("failed to allocate ipv4 gateway address"); | |
808 | return -1; | |
809 | } | |
810 | ||
19a26f82 MK |
811 | if (!inet_pton(AF_INET, value, gw)) { |
812 | SYSERROR("invalid ipv4 gateway address: %s", value); | |
53719062 | 813 | free(gw); |
19a26f82 MK |
814 | return -1; |
815 | } | |
816 | ||
817 | netdev->ipv4_gateway = gw; | |
818 | netdev->ipv4_gateway_auto = false; | |
f8fee0e2 MK |
819 | } |
820 | ||
f8fee0e2 MK |
821 | return 0; |
822 | } | |
823 | ||
12a50cc6 | 824 | static int config_network_ipv6(const char *key, const char *value, |
e892973e | 825 | struct lxc_conf *lxc_conf) |
c2cc9f0a | 826 | { |
c2cc9f0a | 827 | struct lxc_netdev *netdev; |
828 | struct lxc_inet6dev *inet6dev; | |
829 | struct lxc_list *list; | |
12a50cc6 | 830 | char *slash,*valdup; |
c2cc9f0a | 831 | char *netmask; |
832 | ||
16950ecb | 833 | netdev = network_netdev(key, value, &lxc_conf->network); |
33c945e0 | 834 | if (!netdev) |
c2cc9f0a | 835 | return -1; |
c2cc9f0a | 836 | |
837 | inet6dev = malloc(sizeof(*inet6dev)); | |
838 | if (!inet6dev) { | |
36eb9bde | 839 | SYSERROR("failed to allocate ipv6 address"); |
c2cc9f0a | 840 | return -1; |
841 | } | |
842 | memset(inet6dev, 0, sizeof(*inet6dev)); | |
843 | ||
844 | list = malloc(sizeof(*list)); | |
845 | if (!list) { | |
36eb9bde | 846 | SYSERROR("failed to allocate memory"); |
28027320 | 847 | free(inet6dev); |
c2cc9f0a | 848 | return -1; |
849 | } | |
850 | ||
851 | lxc_list_init(list); | |
852 | list->elem = inet6dev; | |
853 | ||
956edc54 SG |
854 | valdup = strdup(value); |
855 | if (!valdup) { | |
856 | ERROR("no address specified"); | |
28027320 SH |
857 | free(list); |
858 | free(inet6dev); | |
956edc54 SG |
859 | return -1; |
860 | } | |
861 | ||
a059591e | 862 | inet6dev->prefix = 64; |
12a50cc6 | 863 | slash = strstr(valdup, "/"); |
c2cc9f0a | 864 | if (slash) { |
865 | *slash = '\0'; | |
866 | netmask = slash + 1; | |
867 | inet6dev->prefix = atoi(netmask); | |
868 | } | |
869 | ||
5acccf95 SH |
870 | if (!inet_pton(AF_INET6, valdup, &inet6dev->addr)) { |
871 | SYSERROR("invalid ipv6 address: %s", valdup); | |
28027320 SH |
872 | free(list); |
873 | free(inet6dev); | |
956edc54 | 874 | free(valdup); |
c2cc9f0a | 875 | return -1; |
876 | } | |
877 | ||
8538f388 | 878 | lxc_list_add_tail(&netdev->ipv6, list); |
c2cc9f0a | 879 | |
956edc54 | 880 | free(valdup); |
c2cc9f0a | 881 | return 0; |
882 | } | |
883 | ||
12a50cc6 | 884 | static int config_network_ipv6_gateway(const char *key, const char *value, |
f8fee0e2 MK |
885 | struct lxc_conf *lxc_conf) |
886 | { | |
887 | struct lxc_netdev *netdev; | |
f8fee0e2 MK |
888 | |
889 | netdev = network_netdev(key, value, &lxc_conf->network); | |
890 | if (!netdev) | |
891 | return -1; | |
892 | ||
e088e926 | 893 | free(netdev->ipv6_gateway); |
f8fee0e2 | 894 | |
e088e926 SG |
895 | if (!value || strlen(value) == 0) { |
896 | netdev->ipv4_gateway = NULL; | |
897 | } else if (!strcmp(value, "auto")) { | |
19a26f82 MK |
898 | netdev->ipv6_gateway = NULL; |
899 | netdev->ipv6_gateway_auto = true; | |
900 | } else { | |
8fb86a37 SH |
901 | struct in6_addr *gw; |
902 | ||
bec695f3 DE |
903 | gw = malloc(sizeof(*gw)); |
904 | if (!gw) { | |
905 | SYSERROR("failed to allocate ipv6 gateway address"); | |
906 | return -1; | |
907 | } | |
908 | ||
19a26f82 MK |
909 | if (!inet_pton(AF_INET6, value, gw)) { |
910 | SYSERROR("invalid ipv6 gateway address: %s", value); | |
28027320 | 911 | free(gw); |
19a26f82 MK |
912 | return -1; |
913 | } | |
914 | ||
915 | netdev->ipv6_gateway = gw; | |
916 | netdev->ipv6_gateway_auto = false; | |
f8fee0e2 MK |
917 | } |
918 | ||
f8fee0e2 MK |
919 | return 0; |
920 | } | |
921 | ||
8fc8295a DE |
922 | static int config_network_script_up(const char *key, const char *value, |
923 | struct lxc_conf *lxc_conf) | |
e3b4c4c4 ST |
924 | { |
925 | struct lxc_netdev *netdev; | |
926 | ||
927 | netdev = network_netdev(key, value, &lxc_conf->network); | |
928 | if (!netdev) | |
8fc8295a | 929 | return -1; |
e3b4c4c4 | 930 | |
8fc8295a DE |
931 | return config_string_item(&netdev->upscript, value); |
932 | } | |
933 | ||
934 | static int config_network_script_down(const char *key, const char *value, | |
935 | struct lxc_conf *lxc_conf) | |
936 | { | |
937 | struct lxc_netdev *netdev; | |
938 | ||
939 | netdev = network_netdev(key, value, &lxc_conf->network); | |
940 | if (!netdev) | |
941 | return -1; | |
942 | ||
943 | return config_string_item(&netdev->downscript, value); | |
e3b4c4c4 ST |
944 | } |
945 | ||
26ddeedd SH |
946 | static int add_hook(struct lxc_conf *lxc_conf, int which, char *hook) |
947 | { | |
948 | struct lxc_list *hooklist; | |
949 | ||
950 | hooklist = malloc(sizeof(*hooklist)); | |
951 | if (!hooklist) { | |
952 | free(hook); | |
953 | return -1; | |
954 | } | |
955 | hooklist->elem = hook; | |
956 | lxc_list_add_tail(&lxc_conf->hooks[which], hooklist); | |
957 | return 0; | |
958 | } | |
959 | ||
12a50cc6 | 960 | static int config_seccomp(const char *key, const char *value, |
8f2c3a70 SH |
961 | struct lxc_conf *lxc_conf) |
962 | { | |
6d03d92a | 963 | return config_path_item(&lxc_conf->seccomp, value); |
8f2c3a70 SH |
964 | } |
965 | ||
67c660d0 SG |
966 | static int config_init_cmd(const char *key, const char *value, |
967 | struct lxc_conf *lxc_conf) | |
968 | { | |
969 | return config_path_item(&lxc_conf->init_cmd, value); | |
970 | } | |
971 | ||
12a50cc6 | 972 | static int config_hook(const char *key, const char *value, |
26ddeedd SH |
973 | struct lxc_conf *lxc_conf) |
974 | { | |
7d0eb87e SH |
975 | char *copy; |
976 | ||
977 | if (!value || strlen(value) == 0) | |
978 | return lxc_clear_hooks(lxc_conf, key); | |
979 | ||
6b0d5538 SH |
980 | if (strcmp(key, "lxc.hook") == 0) { |
981 | ERROR("lxc.hook cannot take a value"); | |
982 | return -1; | |
983 | } | |
7d0eb87e | 984 | copy = strdup(value); |
26ddeedd SH |
985 | if (!copy) { |
986 | SYSERROR("failed to dup string '%s'", value); | |
987 | return -1; | |
988 | } | |
989 | if (strcmp(key, "lxc.hook.pre-start") == 0) | |
990 | return add_hook(lxc_conf, LXCHOOK_PRESTART, copy); | |
5ea6163a SH |
991 | else if (strcmp(key, "lxc.hook.pre-mount") == 0) |
992 | return add_hook(lxc_conf, LXCHOOK_PREMOUNT, copy); | |
f7bee6c6 MW |
993 | else if (strcmp(key, "lxc.hook.autodev") == 0) |
994 | return add_hook(lxc_conf, LXCHOOK_AUTODEV, copy); | |
26ddeedd SH |
995 | else if (strcmp(key, "lxc.hook.mount") == 0) |
996 | return add_hook(lxc_conf, LXCHOOK_MOUNT, copy); | |
997 | else if (strcmp(key, "lxc.hook.start") == 0) | |
998 | return add_hook(lxc_conf, LXCHOOK_START, copy); | |
999 | else if (strcmp(key, "lxc.hook.post-stop") == 0) | |
1000 | return add_hook(lxc_conf, LXCHOOK_POSTSTOP, copy); | |
148e91f5 SH |
1001 | else if (strcmp(key, "lxc.hook.clone") == 0) |
1002 | return add_hook(lxc_conf, LXCHOOK_CLONE, copy); | |
26ddeedd SH |
1003 | SYSERROR("Unknown key: %s", key); |
1004 | free(copy); | |
1005 | return -1; | |
1006 | } | |
1007 | ||
8f47bc3f | 1008 | static int config_personality(const char *key, const char *value, |
cccc74b5 DL |
1009 | struct lxc_conf *lxc_conf) |
1010 | { | |
525f0002 | 1011 | signed long personality = lxc_config_parse_arch(value); |
cccc74b5 | 1012 | |
525f0002 CS |
1013 | if (personality >= 0) |
1014 | lxc_conf->personality = personality; | |
1015 | else | |
1016 | WARN("unsupported personality '%s'", value); | |
970ab589 DL |
1017 | |
1018 | return 0; | |
cccc74b5 DL |
1019 | } |
1020 | ||
12a50cc6 DE |
1021 | static int config_pts(const char *key, const char *value, |
1022 | struct lxc_conf *lxc_conf) | |
10db618d | 1023 | { |
1024 | int maxpts = atoi(value); | |
1025 | ||
1026 | lxc_conf->pts = maxpts; | |
1027 | ||
1028 | return 0; | |
1029 | } | |
1030 | ||
ee1e7aa0 SG |
1031 | static int config_start(const char *key, const char *value, |
1032 | struct lxc_conf *lxc_conf) | |
1033 | { | |
1034 | if(strcmp(key, "lxc.start.auto") == 0) { | |
1035 | lxc_conf->start_auto = atoi(value); | |
1036 | return 0; | |
1037 | } | |
1038 | else if (strcmp(key, "lxc.start.delay") == 0) { | |
1039 | lxc_conf->start_delay = atoi(value); | |
1040 | return 0; | |
1041 | } | |
1042 | else if (strcmp(key, "lxc.start.order") == 0) { | |
1043 | lxc_conf->start_order = atoi(value); | |
1044 | return 0; | |
1045 | } | |
1046 | SYSERROR("Unknown key: %s", key); | |
1047 | return -1; | |
1048 | } | |
1049 | ||
1050 | static int config_group(const char *key, const char *value, | |
1051 | struct lxc_conf *lxc_conf) | |
1052 | { | |
1053 | char *groups, *groupptr, *sptr, *token; | |
1054 | struct lxc_list *grouplist; | |
1055 | int ret = -1; | |
1056 | ||
1057 | if (!strlen(value)) | |
1058 | return lxc_clear_groups(lxc_conf); | |
1059 | ||
1060 | groups = strdup(value); | |
1061 | if (!groups) { | |
1062 | SYSERROR("failed to dup '%s'", value); | |
1063 | return -1; | |
1064 | } | |
1065 | ||
1066 | /* in case several groups are specified in a single line | |
1067 | * split these groups in a single element for the list */ | |
1068 | for (groupptr = groups;;groupptr = NULL) { | |
1069 | token = strtok_r(groupptr, " \t", &sptr); | |
1070 | if (!token) { | |
1071 | ret = 0; | |
1072 | break; | |
1073 | } | |
1074 | ||
1075 | grouplist = malloc(sizeof(*grouplist)); | |
1076 | if (!grouplist) { | |
1077 | SYSERROR("failed to allocate groups list"); | |
1078 | break; | |
1079 | } | |
1080 | ||
1081 | grouplist->elem = strdup(token); | |
1082 | if (!grouplist->elem) { | |
1083 | SYSERROR("failed to dup '%s'", token); | |
1084 | free(grouplist); | |
1085 | break; | |
1086 | } | |
1087 | ||
1088 | lxc_list_add_tail(&lxc_conf->groups, grouplist); | |
1089 | } | |
1090 | ||
1091 | free(groups); | |
1092 | ||
1093 | return ret; | |
1094 | } | |
1095 | ||
7c661726 MP |
1096 | static int config_environment(const char *key, const char *value, |
1097 | struct lxc_conf *lxc_conf) | |
1098 | { | |
1099 | struct lxc_list *list_item = NULL; | |
1100 | ||
ab799c0b SG |
1101 | if (!strlen(value)) |
1102 | return lxc_clear_environment(lxc_conf); | |
1103 | ||
7c661726 MP |
1104 | list_item = malloc(sizeof(*list_item)); |
1105 | if (!list_item) | |
1106 | goto freak_out; | |
1107 | ||
1108 | list_item->elem = strdup(value); | |
1109 | ||
1110 | if (!list_item->elem) | |
1111 | goto freak_out; | |
1112 | ||
1113 | lxc_list_add_tail(&lxc_conf->environment, list_item); | |
1114 | ||
1115 | return 0; | |
1116 | ||
1117 | freak_out: | |
f10fad2f | 1118 | free(list_item); |
7c661726 MP |
1119 | |
1120 | return -1; | |
1121 | } | |
1122 | ||
12a50cc6 DE |
1123 | static int config_tty(const char *key, const char *value, |
1124 | struct lxc_conf *lxc_conf) | |
b0a33c1e | 1125 | { |
1126 | int nbtty = atoi(value); | |
1127 | ||
1128 | lxc_conf->tty = nbtty; | |
1129 | ||
1130 | return 0; | |
1131 | } | |
1132 | ||
12a50cc6 | 1133 | static int config_ttydir(const char *key, const char *value, |
7c6ef2a2 SH |
1134 | struct lxc_conf *lxc_conf) |
1135 | { | |
6d03d92a | 1136 | return config_string_item_max(&lxc_conf->ttydir, value, NAME_MAX+1); |
7c6ef2a2 SH |
1137 | } |
1138 | ||
7e0e1d94 AV |
1139 | static int config_kmsg(const char *key, const char *value, |
1140 | struct lxc_conf *lxc_conf) | |
1141 | { | |
1142 | int v = atoi(value); | |
1143 | ||
1144 | lxc_conf->kmsg = v; | |
1145 | ||
1146 | return 0; | |
1147 | } | |
1148 | ||
fe4de9a6 DE |
1149 | static int config_lsm_aa_profile(const char *key, const char *value, |
1150 | struct lxc_conf *lxc_conf) | |
e075f5d9 | 1151 | { |
6d03d92a | 1152 | return config_string_item(&lxc_conf->lsm_aa_profile, value); |
fe4de9a6 DE |
1153 | } |
1154 | ||
7aff4f43 SH |
1155 | static int config_lsm_aa_incomplete(const char *key, const char *value, |
1156 | struct lxc_conf *lxc_conf) | |
1157 | { | |
1158 | int v = atoi(value); | |
1159 | ||
1160 | lxc_conf->lsm_aa_allow_incomplete = v == 1 ? 1 : 0; | |
1161 | ||
1162 | return 0; | |
1163 | } | |
1164 | ||
fe4de9a6 DE |
1165 | static int config_lsm_se_context(const char *key, const char *value, |
1166 | struct lxc_conf *lxc_conf) | |
1167 | { | |
6d03d92a | 1168 | return config_string_item(&lxc_conf->lsm_se_context, value); |
e075f5d9 | 1169 | } |
e075f5d9 | 1170 | |
4a85ce2a SH |
1171 | static int config_logfile(const char *key, const char *value, |
1172 | struct lxc_conf *lxc_conf) | |
1173 | { | |
6d03d92a DE |
1174 | int ret; |
1175 | ||
b40a606e SH |
1176 | // store these values in the lxc_conf, and then try to set for |
1177 | // actual current logging. | |
6d03d92a DE |
1178 | ret = config_path_item(&lxc_conf->logfile, value); |
1179 | if (ret == 0) | |
1180 | ret = lxc_log_set_file(lxc_conf->logfile); | |
1181 | return ret; | |
4a85ce2a SH |
1182 | } |
1183 | ||
1184 | static int config_loglevel(const char *key, const char *value, | |
1185 | struct lxc_conf *lxc_conf) | |
1186 | { | |
9ea87d5d SH |
1187 | int newlevel; |
1188 | ||
4a85ce2a SH |
1189 | if (!value || strlen(value) == 0) |
1190 | return 0; | |
1191 | ||
1192 | if (value[0] >= '0' && value[0] <= '9') | |
9ea87d5d | 1193 | newlevel = atoi(value); |
4a85ce2a | 1194 | else |
9ea87d5d | 1195 | newlevel = lxc_log_priority_to_int(value); |
b40a606e SH |
1196 | // store these values in the lxc_conf, and then try to set for |
1197 | // actual current logging. | |
1198 | lxc_conf->loglevel = newlevel; | |
9ea87d5d | 1199 | return lxc_log_set_level(newlevel); |
4a85ce2a SH |
1200 | } |
1201 | ||
12a50cc6 | 1202 | static int config_autodev(const char *key, const char *value, |
c6883f38 SH |
1203 | struct lxc_conf *lxc_conf) |
1204 | { | |
1205 | int v = atoi(value); | |
1206 | ||
1207 | lxc_conf->autodev = v; | |
1208 | ||
1209 | return 0; | |
1210 | } | |
1211 | ||
a84b9932 AV |
1212 | static int sig_num(const char *sig) |
1213 | { | |
1214 | int n; | |
1215 | char *endp = NULL; | |
1216 | ||
1217 | errno = 0; | |
1218 | n = strtol(sig, &endp, 10); | |
1219 | if (sig == endp || n < 0 || errno != 0) | |
1220 | return -1; | |
1221 | return n; | |
1222 | } | |
1223 | ||
1224 | static int rt_sig_num(const char *signame) | |
1225 | { | |
1226 | int sig_n = 0; | |
1227 | int rtmax = 0; | |
1228 | ||
1229 | if (strncasecmp(signame, "max-", 4) == 0) { | |
1230 | rtmax = 1; | |
1231 | } | |
1232 | signame += 4; | |
1233 | if (!isdigit(*signame)) | |
1234 | return -1; | |
1235 | sig_n = sig_num(signame); | |
1236 | sig_n = rtmax ? SIGRTMAX - sig_n : SIGRTMIN + sig_n; | |
1237 | if (sig_n > SIGRTMAX || sig_n < SIGRTMIN) | |
1238 | return -1; | |
1239 | return sig_n; | |
1240 | } | |
1241 | ||
1242 | static int sig_parse(const char *signame) { | |
1243 | int n; | |
1244 | ||
1245 | if (isdigit(*signame)) { | |
1246 | return sig_num(signame); | |
1247 | } else if (strncasecmp(signame, "sig", 3) == 0) { | |
1248 | signame += 3; | |
1249 | if (strncasecmp(signame, "rt", 2) == 0) | |
1250 | return rt_sig_num(signame + 2); | |
1251 | for (n = 0; n < sizeof(signames) / sizeof((signames)[0]); n++) { | |
1252 | if (strcasecmp (signames[n].name, signame) == 0) | |
1253 | return signames[n].num; | |
1254 | } | |
1255 | } | |
1256 | return -1; | |
1257 | } | |
1258 | ||
f0f1d8c0 DE |
1259 | static int config_haltsignal(const char *key, const char *value, |
1260 | struct lxc_conf *lxc_conf) | |
1261 | { | |
1262 | int sig_n = sig_parse(value); | |
1263 | ||
1264 | if (sig_n < 0) | |
1265 | return -1; | |
1266 | lxc_conf->haltsignal = sig_n; | |
1267 | ||
1268 | return 0; | |
1269 | } | |
1270 | ||
a84b9932 AV |
1271 | static int config_stopsignal(const char *key, const char *value, |
1272 | struct lxc_conf *lxc_conf) | |
1273 | { | |
1274 | int sig_n = sig_parse(value); | |
1275 | ||
1276 | if (sig_n < 0) | |
1277 | return -1; | |
1278 | lxc_conf->stopsignal = sig_n; | |
1279 | ||
1280 | return 0; | |
1281 | } | |
1282 | ||
12a50cc6 DE |
1283 | static int config_cgroup(const char *key, const char *value, |
1284 | struct lxc_conf *lxc_conf) | |
576f946d | 1285 | { |
1286 | char *token = "lxc.cgroup."; | |
1287 | char *subkey; | |
bf83c5b9 MS |
1288 | struct lxc_list *cglist = NULL; |
1289 | struct lxc_cgroup *cgelem = NULL; | |
576f946d | 1290 | |
7d0eb87e SH |
1291 | if (!value || strlen(value) == 0) |
1292 | return lxc_clear_cgroups(lxc_conf, key); | |
1293 | ||
576f946d | 1294 | subkey = strstr(key, token); |
1295 | ||
1296 | if (!subkey) | |
1297 | return -1; | |
1298 | ||
1299 | if (!strlen(subkey)) | |
1300 | return -1; | |
1301 | ||
1302 | if (strlen(subkey) == strlen(token)) | |
1303 | return -1; | |
a871ff6b | 1304 | |
576f946d | 1305 | subkey += strlen(token); |
1306 | ||
1307 | cglist = malloc(sizeof(*cglist)); | |
1308 | if (!cglist) | |
bf83c5b9 | 1309 | goto out; |
576f946d | 1310 | |
1311 | cgelem = malloc(sizeof(*cgelem)); | |
bf83c5b9 MS |
1312 | if (!cgelem) |
1313 | goto out; | |
1314 | memset(cgelem, 0, sizeof(*cgelem)); | |
576f946d | 1315 | |
1316 | cgelem->subsystem = strdup(subkey); | |
1317 | cgelem->value = strdup(value); | |
bf83c5b9 MS |
1318 | |
1319 | if (!cgelem->subsystem || !cgelem->value) | |
1320 | goto out; | |
1321 | ||
576f946d | 1322 | cglist->elem = cgelem; |
1323 | ||
94d12f0a | 1324 | lxc_list_add_tail(&lxc_conf->cgroup, cglist); |
576f946d | 1325 | |
1326 | return 0; | |
bf83c5b9 MS |
1327 | |
1328 | out: | |
f10fad2f | 1329 | free(cglist); |
bf83c5b9 MS |
1330 | |
1331 | if (cgelem) { | |
f10fad2f | 1332 | free(cgelem->subsystem); |
bf83c5b9 | 1333 | |
f10fad2f | 1334 | free(cgelem->value); |
bf83c5b9 MS |
1335 | |
1336 | free(cgelem); | |
1337 | } | |
1338 | ||
1339 | return -1; | |
576f946d | 1340 | } |
1341 | ||
f6d3e3e4 SH |
1342 | static int config_idmap(const char *key, const char *value, struct lxc_conf *lxc_conf) |
1343 | { | |
1344 | char *token = "lxc.id_map"; | |
1345 | char *subkey; | |
1346 | struct lxc_list *idmaplist = NULL; | |
1347 | struct id_map *idmap = NULL; | |
251d0d2a | 1348 | unsigned long hostid, nsid, range; |
f6d3e3e4 SH |
1349 | char type; |
1350 | int ret; | |
1351 | ||
7d0eb87e SH |
1352 | if (!value || strlen(value) == 0) |
1353 | return lxc_clear_idmaps(lxc_conf); | |
1354 | ||
f6d3e3e4 SH |
1355 | subkey = strstr(key, token); |
1356 | ||
1357 | if (!subkey) | |
1358 | return -1; | |
1359 | ||
1360 | if (!strlen(subkey)) | |
1361 | return -1; | |
1362 | ||
1363 | idmaplist = malloc(sizeof(*idmaplist)); | |
1364 | if (!idmaplist) | |
1365 | goto out; | |
1366 | ||
1367 | idmap = malloc(sizeof(*idmap)); | |
1368 | if (!idmap) | |
1369 | goto out; | |
1370 | memset(idmap, 0, sizeof(*idmap)); | |
1371 | ||
251d0d2a | 1372 | ret = sscanf(value, "%c %lu %lu %lu", &type, &nsid, &hostid, &range); |
f6d3e3e4 SH |
1373 | if (ret != 4) |
1374 | goto out; | |
7e60c3f0 | 1375 | |
251d0d2a | 1376 | INFO("read uid map: type %c nsid %lu hostid %lu range %lu", type, nsid, hostid, range); |
ac7725e7 | 1377 | if (type == 'u') |
f6d3e3e4 | 1378 | idmap->idtype = ID_TYPE_UID; |
ac7725e7 | 1379 | else if (type == 'g') |
f6d3e3e4 SH |
1380 | idmap->idtype = ID_TYPE_GID; |
1381 | else | |
1382 | goto out; | |
7e60c3f0 | 1383 | |
f6d3e3e4 SH |
1384 | idmap->hostid = hostid; |
1385 | idmap->nsid = nsid; | |
1386 | idmap->range = range; | |
1387 | ||
7e60c3f0 SG |
1388 | idmaplist->elem = idmap; |
1389 | lxc_list_add_tail(&lxc_conf->id_map, idmaplist); | |
1390 | ||
f6d3e3e4 SH |
1391 | return 0; |
1392 | ||
1393 | out: | |
f10fad2f | 1394 | free(idmaplist); |
f6d3e3e4 SH |
1395 | |
1396 | if (idmap) { | |
1397 | free(idmap); | |
1398 | } | |
1399 | ||
1400 | return -1; | |
1401 | } | |
1402 | ||
d95db067 DE |
1403 | static int config_fstab(const char *key, const char *value, |
1404 | struct lxc_conf *lxc_conf) | |
1405 | { | |
d9192f5d SH |
1406 | if (!value || strlen(value) == 0) |
1407 | return -1; | |
6d03d92a | 1408 | return config_path_item(&lxc_conf->fstab, value); |
d95db067 DE |
1409 | } |
1410 | ||
368bbc02 CS |
1411 | static int config_mount_auto(const char *key, const char *value, |
1412 | struct lxc_conf *lxc_conf) | |
1413 | { | |
1414 | char *autos, *autoptr, *sptr, *token; | |
b06b8511 | 1415 | static struct { const char *token; int mask; int flag; } allowed_auto_mounts[] = { |
0769b82a CS |
1416 | { "proc", LXC_AUTO_PROC_MASK, LXC_AUTO_PROC_MIXED }, |
1417 | { "proc:mixed", LXC_AUTO_PROC_MASK, LXC_AUTO_PROC_MIXED }, | |
1418 | { "proc:rw", LXC_AUTO_PROC_MASK, LXC_AUTO_PROC_RW }, | |
f24a52d5 | 1419 | { "sys", LXC_AUTO_SYS_MASK, LXC_AUTO_SYS_MIXED }, |
0769b82a | 1420 | { "sys:ro", LXC_AUTO_SYS_MASK, LXC_AUTO_SYS_RO }, |
f24a52d5 | 1421 | { "sys:mixed", LXC_AUTO_SYS_MASK, LXC_AUTO_SYS_MIXED }, |
0769b82a CS |
1422 | { "sys:rw", LXC_AUTO_SYS_MASK, LXC_AUTO_SYS_RW }, |
1423 | { "cgroup", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_NOSPEC }, | |
1424 | { "cgroup:mixed", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_MIXED }, | |
1425 | { "cgroup:ro", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_RO }, | |
1426 | { "cgroup:rw", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_RW }, | |
1427 | { "cgroup-full", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_FULL_NOSPEC }, | |
1428 | { "cgroup-full:mixed", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_FULL_MIXED }, | |
1429 | { "cgroup-full:ro", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_FULL_RO }, | |
1430 | { "cgroup-full:rw", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_FULL_RW }, | |
b06b8511 CS |
1431 | /* NB: For adding anything that ist just a single on/off, but has |
1432 | * no options: keep mask and flag identical and just define the | |
1433 | * enum value as an unused bit so far | |
1434 | */ | |
368bbc02 CS |
1435 | { NULL, 0 } |
1436 | }; | |
1437 | int i; | |
1438 | int ret = -1; | |
1439 | ||
d9192f5d SH |
1440 | if (!value || strlen(value) == 0) { |
1441 | lxc_conf->auto_mounts = 0; | |
1442 | return 0; | |
1443 | } | |
368bbc02 CS |
1444 | |
1445 | autos = strdup(value); | |
1446 | if (!autos) { | |
1447 | SYSERROR("failed to dup '%s'", value); | |
1448 | return -1; | |
1449 | } | |
1450 | ||
1451 | for (autoptr = autos; ; autoptr = NULL) { | |
1452 | token = strtok_r(autoptr, " \t", &sptr); | |
1453 | if (!token) { | |
1454 | ret = 0; | |
1455 | break; | |
1456 | } | |
1457 | ||
1458 | for (i = 0; allowed_auto_mounts[i].token; i++) { | |
1459 | if (!strcmp(allowed_auto_mounts[i].token, token)) | |
1460 | break; | |
1461 | } | |
1462 | ||
1463 | if (!allowed_auto_mounts[i].token) { | |
1464 | ERROR("Invalid filesystem to automount: %s", token); | |
1465 | break; | |
1466 | } | |
1467 | ||
b06b8511 | 1468 | lxc_conf->auto_mounts &= ~allowed_auto_mounts[i].mask; |
368bbc02 CS |
1469 | lxc_conf->auto_mounts |= allowed_auto_mounts[i].flag; |
1470 | } | |
1471 | ||
1472 | free(autos); | |
1473 | ||
1474 | return ret; | |
1475 | } | |
1476 | ||
d9192f5d SH |
1477 | /* |
1478 | * TODO | |
1479 | * This fn is handling lxc.mount, lxc.mount.entry, and lxc.mount.auto. | |
1480 | * It should probably be split into 3 separate functions indexed by | |
1481 | * the config[] entries at top. | |
1482 | */ | |
12a50cc6 DE |
1483 | static int config_mount(const char *key, const char *value, |
1484 | struct lxc_conf *lxc_conf) | |
e7938e9e MN |
1485 | { |
1486 | char *fstab_token = "lxc.mount"; | |
1487 | char *token = "lxc.mount.entry"; | |
368bbc02 | 1488 | char *auto_token = "lxc.mount.auto"; |
e7938e9e MN |
1489 | char *subkey; |
1490 | char *mntelem; | |
1491 | struct lxc_list *mntlist; | |
1492 | ||
1493 | subkey = strstr(key, token); | |
1494 | ||
1495 | if (!subkey) { | |
368bbc02 | 1496 | subkey = strstr(key, auto_token); |
e7938e9e | 1497 | |
368bbc02 CS |
1498 | if (!subkey) { |
1499 | subkey = strstr(key, fstab_token); | |
1500 | ||
1501 | if (!subkey) | |
1502 | return -1; | |
1503 | ||
1504 | return config_fstab(key, value, lxc_conf); | |
1505 | } | |
e7938e9e | 1506 | |
368bbc02 | 1507 | return config_mount_auto(key, value, lxc_conf); |
e7938e9e MN |
1508 | } |
1509 | ||
ec64264d | 1510 | /* At this point we definitely have key = lxc.mount.entry */ |
d9192f5d SH |
1511 | if (!value || strlen(value) == 0) |
1512 | return lxc_clear_mount_entries(lxc_conf); | |
e7938e9e MN |
1513 | |
1514 | mntlist = malloc(sizeof(*mntlist)); | |
1515 | if (!mntlist) | |
1516 | return -1; | |
1517 | ||
1518 | mntelem = strdup(value); | |
00b6be44 SH |
1519 | if (!mntelem) { |
1520 | free(mntlist); | |
bf83c5b9 | 1521 | return -1; |
00b6be44 | 1522 | } |
e7938e9e MN |
1523 | mntlist->elem = mntelem; |
1524 | ||
1525 | lxc_list_add_tail(&lxc_conf->mount_list, mntlist); | |
1526 | ||
1527 | return 0; | |
1528 | } | |
1529 | ||
1fb86a7c SH |
1530 | static int config_cap_keep(const char *key, const char *value, |
1531 | struct lxc_conf *lxc_conf) | |
1532 | { | |
1533 | char *keepcaps, *keepptr, *sptr, *token; | |
1534 | struct lxc_list *keeplist; | |
1535 | int ret = -1; | |
1536 | ||
1537 | if (!strlen(value)) | |
7d0eb87e | 1538 | return lxc_clear_config_keepcaps(lxc_conf); |
1fb86a7c SH |
1539 | |
1540 | keepcaps = strdup(value); | |
1541 | if (!keepcaps) { | |
1542 | SYSERROR("failed to dup '%s'", value); | |
1543 | return -1; | |
1544 | } | |
1545 | ||
1546 | /* in case several capability keep is specified in a single line | |
1547 | * split these caps in a single element for the list */ | |
1548 | for (keepptr = keepcaps;;keepptr = NULL) { | |
1549 | token = strtok_r(keepptr, " \t", &sptr); | |
1550 | if (!token) { | |
1551 | ret = 0; | |
1552 | break; | |
1553 | } | |
1554 | ||
7035407c DE |
1555 | if (!strcmp(token, "none")) |
1556 | lxc_clear_config_keepcaps(lxc_conf); | |
1557 | ||
1fb86a7c SH |
1558 | keeplist = malloc(sizeof(*keeplist)); |
1559 | if (!keeplist) { | |
1560 | SYSERROR("failed to allocate keepcap list"); | |
1561 | break; | |
1562 | } | |
1563 | ||
1564 | keeplist->elem = strdup(token); | |
1565 | if (!keeplist->elem) { | |
1566 | SYSERROR("failed to dup '%s'", token); | |
1567 | free(keeplist); | |
1568 | break; | |
1569 | } | |
1570 | ||
1571 | lxc_list_add_tail(&lxc_conf->keepcaps, keeplist); | |
1572 | } | |
1573 | ||
1574 | free(keepcaps); | |
1575 | ||
1576 | return ret; | |
1577 | } | |
1578 | ||
12a50cc6 | 1579 | static int config_cap_drop(const char *key, const char *value, |
81810dd1 DL |
1580 | struct lxc_conf *lxc_conf) |
1581 | { | |
d95db067 | 1582 | char *dropcaps, *dropptr, *sptr, *token; |
81810dd1 DL |
1583 | struct lxc_list *droplist; |
1584 | int ret = -1; | |
1585 | ||
1586 | if (!strlen(value)) | |
7d0eb87e | 1587 | return lxc_clear_config_caps(lxc_conf); |
81810dd1 DL |
1588 | |
1589 | dropcaps = strdup(value); | |
1590 | if (!dropcaps) { | |
1591 | SYSERROR("failed to dup '%s'", value); | |
1592 | return -1; | |
1593 | } | |
1594 | ||
1595 | /* in case several capability drop is specified in a single line | |
1596 | * split these caps in a single element for the list */ | |
d95db067 DE |
1597 | for (dropptr = dropcaps;;dropptr = NULL) { |
1598 | token = strtok_r(dropptr, " \t", &sptr); | |
81810dd1 DL |
1599 | if (!token) { |
1600 | ret = 0; | |
1601 | break; | |
1602 | } | |
81810dd1 DL |
1603 | |
1604 | droplist = malloc(sizeof(*droplist)); | |
1605 | if (!droplist) { | |
1606 | SYSERROR("failed to allocate drop list"); | |
1607 | break; | |
1608 | } | |
1609 | ||
1610 | droplist->elem = strdup(token); | |
1611 | if (!droplist->elem) { | |
1612 | SYSERROR("failed to dup '%s'", token); | |
1613 | free(droplist); | |
1614 | break; | |
1615 | } | |
1616 | ||
1617 | lxc_list_add_tail(&lxc_conf->caps, droplist); | |
1618 | } | |
1619 | ||
1620 | free(dropcaps); | |
1621 | ||
1622 | return ret; | |
1623 | } | |
1624 | ||
12a50cc6 | 1625 | static int config_console(const char *key, const char *value, |
28a4b0e5 DL |
1626 | struct lxc_conf *lxc_conf) |
1627 | { | |
6d03d92a | 1628 | return config_path_item(&lxc_conf->console.path, value); |
28a4b0e5 DL |
1629 | } |
1630 | ||
96f15ca1 SH |
1631 | static int config_console_logfile(const char *key, const char *value, |
1632 | struct lxc_conf *lxc_conf) | |
1633 | { | |
1634 | return config_path_item(&lxc_conf->console.log_path, value); | |
1635 | } | |
1636 | ||
e6744e9b SH |
1637 | /* |
1638 | * If we find a lxc.network.hwaddr in the original config file, | |
1639 | * we expand it in the unexpanded_config, so that after a save_config | |
1640 | * we store the hwaddr for re-use. | |
1641 | * This is only called when reading the config file, not when executing | |
1642 | * a lxc.include. | |
1643 | * 'x' and 'X' are substituted in-place. | |
1644 | */ | |
1645 | static void update_hwaddr(const char *line) | |
1646 | { | |
1647 | char *p; | |
1648 | ||
1649 | line += lxc_char_left_gc(line, strlen(line)); | |
1650 | if (line[0] == '#') | |
1651 | return; | |
1652 | if (strncmp(line, "lxc.network.hwaddr", 18) != 0) | |
1653 | return; | |
1654 | p = strchr(line, '='); | |
1655 | if (!p) | |
1656 | return; // let config_network_hwaddr raise the error | |
1657 | p++; | |
1658 | while (isblank(*p)) | |
1659 | p++; | |
1660 | if (!*p) | |
1661 | return; | |
1662 | ||
1663 | rand_complete_hwaddr(p); | |
1664 | } | |
1665 | ||
6b0d5538 | 1666 | int append_unexp_config_line(const char *line, struct lxc_conf *conf) |
f979ac15 | 1667 | { |
6b0d5538 | 1668 | size_t len = conf->unexpanded_len, linelen = strlen(line); |
f979ac15 | 1669 | |
e6744e9b SH |
1670 | update_hwaddr(line); |
1671 | ||
6b0d5538 SH |
1672 | while (conf->unexpanded_alloced <= len + linelen + 2) { |
1673 | char *tmp = realloc(conf->unexpanded_config, conf->unexpanded_alloced + 1024); | |
1674 | if (!tmp) | |
1675 | return -1; | |
1676 | if (!conf->unexpanded_config) | |
1677 | *tmp = '\0'; | |
1678 | conf->unexpanded_config = tmp; | |
1679 | conf->unexpanded_alloced += 1024; | |
1680 | } | |
1681 | strcat(conf->unexpanded_config, line); | |
1682 | conf->unexpanded_len += linelen; | |
1683 | if (line[linelen-1] != '\n') { | |
1684 | strcat(conf->unexpanded_config, "\n"); | |
1685 | conf->unexpanded_len++; | |
f979ac15 | 1686 | } |
f979ac15 SH |
1687 | return 0; |
1688 | } | |
1689 | ||
e1daebd9 SH |
1690 | static int do_includedir(const char *dirp, struct lxc_conf *lxc_conf) |
1691 | { | |
1692 | struct dirent dirent, *direntp; | |
1693 | DIR *dir; | |
1694 | char path[MAXPATHLEN]; | |
1695 | int ret = -1, len; | |
1696 | ||
1697 | dir = opendir(dirp); | |
1698 | if (!dir) { | |
1699 | SYSERROR("failed to open '%s'", dirp); | |
1700 | return -1; | |
1701 | } | |
1702 | ||
1703 | while (!readdir_r(dir, &dirent, &direntp)) { | |
1704 | const char *fnam; | |
1705 | if (!direntp) | |
1706 | break; | |
1707 | ||
1708 | fnam = direntp->d_name; | |
1709 | if (!strcmp(fnam, ".")) | |
1710 | continue; | |
1711 | ||
1712 | if (!strcmp(fnam, "..")) | |
1713 | continue; | |
1714 | ||
1715 | len = strlen(fnam); | |
1716 | if (len < 6 || strncmp(fnam+len-5, ".conf", 5) != 0) | |
1717 | continue; | |
1718 | len = snprintf(path, MAXPATHLEN, "%s/%s", dirp, fnam); | |
1719 | if (len < 0 || len >= MAXPATHLEN) { | |
1720 | ERROR("lxc.include filename too long under '%s'", dirp); | |
1721 | ret = -1; | |
1722 | goto out; | |
1723 | } | |
1724 | ||
1725 | ret = lxc_config_read(path, lxc_conf, true); | |
1726 | if (ret < 0) | |
1727 | goto out; | |
1728 | } | |
1729 | ret = 0; | |
1730 | ||
1731 | out: | |
1732 | if (closedir(dir)) | |
1733 | WARN("lxc.include dir: failed to close directory"); | |
1734 | ||
1735 | return ret; | |
1736 | } | |
1737 | ||
12a50cc6 | 1738 | static int config_includefile(const char *key, const char *value, |
09ad6246 SH |
1739 | struct lxc_conf *lxc_conf) |
1740 | { | |
e1daebd9 SH |
1741 | if (is_dir(value)) |
1742 | return do_includedir(value, lxc_conf); | |
1743 | ||
6b0d5538 | 1744 | return lxc_config_read(value, lxc_conf, true); |
09ad6246 SH |
1745 | } |
1746 | ||
12a50cc6 DE |
1747 | static int config_rootfs(const char *key, const char *value, |
1748 | struct lxc_conf *lxc_conf) | |
c2cc9f0a | 1749 | { |
6d03d92a | 1750 | return config_path_item(&lxc_conf->rootfs.path, value); |
c2cc9f0a | 1751 | } |
1752 | ||
12a50cc6 DE |
1753 | static int config_rootfs_mount(const char *key, const char *value, |
1754 | struct lxc_conf *lxc_conf) | |
23b7ea69 | 1755 | { |
6d03d92a | 1756 | return config_path_item(&lxc_conf->rootfs.mount, value); |
23b7ea69 DL |
1757 | } |
1758 | ||
a17b1e65 SG |
1759 | static int config_rootfs_options(const char *key, const char *value, |
1760 | struct lxc_conf *lxc_conf) | |
1761 | { | |
1762 | return config_string_item(&lxc_conf->rootfs.options, value); | |
1763 | } | |
1764 | ||
12a50cc6 DE |
1765 | static int config_pivotdir(const char *key, const char *value, |
1766 | struct lxc_conf *lxc_conf) | |
bf601689 | 1767 | { |
2d489f9e | 1768 | WARN("lxc.pivotdir is ignored. It will soon become an error."); |
6d03d92a | 1769 | return config_path_item(&lxc_conf->rootfs.pivot, value); |
bf601689 MH |
1770 | } |
1771 | ||
12a50cc6 DE |
1772 | static int config_utsname(const char *key, const char *value, |
1773 | struct lxc_conf *lxc_conf) | |
c2cc9f0a | 1774 | { |
1775 | struct utsname *utsname; | |
1776 | ||
1777 | utsname = malloc(sizeof(*utsname)); | |
1778 | if (!utsname) { | |
36eb9bde | 1779 | SYSERROR("failed to allocate memory"); |
c2cc9f0a | 1780 | return -1; |
1781 | } | |
1782 | ||
1783 | if (strlen(value) >= sizeof(utsname->nodename)) { | |
36eb9bde | 1784 | ERROR("node name '%s' is too long", |
16e29c91 | 1785 | value); |
b6f24d54 | 1786 | free(utsname); |
c2cc9f0a | 1787 | return -1; |
1788 | } | |
1789 | ||
1790 | strcpy(utsname->nodename, value); | |
f10fad2f | 1791 | free(lxc_conf->utsname); |
c2cc9f0a | 1792 | lxc_conf->utsname = utsname; |
1793 | ||
1794 | return 0; | |
1795 | } | |
1796 | ||
6b0d5538 SH |
1797 | struct parse_line_conf { |
1798 | struct lxc_conf *conf; | |
1799 | bool from_include; | |
1800 | }; | |
4184c3e1 | 1801 | |
7a7ff0c6 | 1802 | static int parse_line(char *buffer, void *data) |
c2cc9f0a | 1803 | { |
72d0e1cb | 1804 | struct lxc_config_t *config; |
81192358 | 1805 | char *line, *linep; |
c2cc9f0a | 1806 | char *dot; |
1807 | char *key; | |
1808 | char *value; | |
476d4cf1 | 1809 | int ret = 0; |
6b0d5538 | 1810 | struct parse_line_conf *plc = data; |
c2cc9f0a | 1811 | |
91480a0f | 1812 | if (lxc_is_line_empty(buffer)) |
c2cc9f0a | 1813 | return 0; |
1814 | ||
81192358 DL |
1815 | /* we have to dup the buffer otherwise, at the re-exec for |
1816 | * reboot we modified the original string on the stack by | |
1817 | * replacing '=' by '\0' below | |
91480a0f | 1818 | */ |
81192358 | 1819 | linep = line = strdup(buffer); |
91480a0f DL |
1820 | if (!line) { |
1821 | SYSERROR("failed to allocate memory for '%s'", buffer); | |
81192358 | 1822 | return -1; |
91480a0f DL |
1823 | } |
1824 | ||
6b0d5538 SH |
1825 | if (!plc->from_include) |
1826 | if ((ret = append_unexp_config_line(line, plc->conf))) | |
1827 | goto out; | |
1828 | ||
b2718c72 | 1829 | line += lxc_char_left_gc(line, strlen(line)); |
476d4cf1 | 1830 | |
4184c3e1 SH |
1831 | /* ignore comments */ |
1832 | if (line[0] == '#') | |
91480a0f | 1833 | goto out; |
476d4cf1 | 1834 | |
6b0d5538 SH |
1835 | /* martian option - don't add it to the config itself */ |
1836 | if (strncmp(line, "lxc.", 4)) | |
4184c3e1 | 1837 | goto out; |
4184c3e1 | 1838 | |
476d4cf1 | 1839 | ret = -1; |
c2cc9f0a | 1840 | |
b2718c72 | 1841 | dot = strstr(line, "="); |
c2cc9f0a | 1842 | if (!dot) { |
36eb9bde | 1843 | ERROR("invalid configuration line: %s", line); |
91480a0f | 1844 | goto out; |
c2cc9f0a | 1845 | } |
a871ff6b | 1846 | |
c2cc9f0a | 1847 | *dot = '\0'; |
1848 | value = dot + 1; | |
1849 | ||
b2718c72 | 1850 | key = line; |
1851 | key[lxc_char_right_gc(key, strlen(key))] = '\0'; | |
c2cc9f0a | 1852 | |
b2718c72 | 1853 | value += lxc_char_left_gc(value, strlen(value)); |
1854 | value[lxc_char_right_gc(value, strlen(value))] = '\0'; | |
c2cc9f0a | 1855 | |
72d0e1cb | 1856 | config = lxc_getconfig(key); |
c2cc9f0a | 1857 | if (!config) { |
6e1d9b94 | 1858 | ERROR("unknown key %s", key); |
91480a0f | 1859 | goto out; |
c2cc9f0a | 1860 | } |
1861 | ||
6b0d5538 | 1862 | ret = config->cb(key, value, plc->conf); |
91480a0f DL |
1863 | |
1864 | out: | |
81192358 | 1865 | free(linep); |
91480a0f | 1866 | return ret; |
c2cc9f0a | 1867 | } |
1868 | ||
74a3920a | 1869 | static int lxc_config_readline(char *buffer, struct lxc_conf *conf) |
af5b0155 | 1870 | { |
6b0d5538 SH |
1871 | struct parse_line_conf c; |
1872 | ||
1873 | c.conf = conf; | |
1874 | c.from_include = false; | |
1875 | ||
1876 | return parse_line(buffer, &c); | |
af5b0155 CLG |
1877 | } |
1878 | ||
6b0d5538 | 1879 | int lxc_config_read(const char *file, struct lxc_conf *conf, bool from_include) |
c2cc9f0a | 1880 | { |
6b0d5538 SH |
1881 | struct parse_line_conf c; |
1882 | ||
1883 | c.conf = conf; | |
1884 | c.from_include = from_include; | |
f979ac15 | 1885 | |
f3ca99fd SH |
1886 | if( access(file, R_OK) == -1 ) { |
1887 | return -1; | |
1888 | } | |
6b0d5538 | 1889 | |
f7bee6c6 | 1890 | /* Catch only the top level config file name in the structure */ |
6b0d5538 | 1891 | if( ! conf->rcfile ) |
f7bee6c6 | 1892 | conf->rcfile = strdup( file ); |
f979ac15 | 1893 | |
6b0d5538 | 1894 | return lxc_file_for_each_line(file, parse_line, &c); |
c2cc9f0a | 1895 | } |
62e46035 CLG |
1896 | |
1897 | int lxc_config_define_add(struct lxc_list *defines, char* arg) | |
1898 | { | |
1899 | struct lxc_list *dent; | |
1900 | ||
1901 | dent = malloc(sizeof(struct lxc_list)); | |
1902 | if (!dent) | |
1903 | return -1; | |
1904 | ||
1905 | dent->elem = arg; | |
1906 | lxc_list_add_tail(defines, dent); | |
1907 | return 0; | |
1908 | } | |
1909 | ||
226a18d6 | 1910 | int lxc_config_define_load(struct lxc_list *defines, struct lxc_conf *conf) |
62e46035 | 1911 | { |
9ebb03ad | 1912 | struct lxc_list *it,*next; |
62e46035 CLG |
1913 | int ret = 0; |
1914 | ||
1915 | lxc_list_for_each(it, defines) { | |
1916 | ret = lxc_config_readline(it->elem, conf); | |
1917 | if (ret) | |
1918 | break; | |
1919 | } | |
1920 | ||
9ebb03ad | 1921 | lxc_list_for_each_safe(it, defines, next) { |
62e46035 CLG |
1922 | lxc_list_del(it); |
1923 | free(it); | |
1924 | } | |
1925 | ||
1926 | return ret; | |
1927 | } | |
525f0002 CS |
1928 | |
1929 | signed long lxc_config_parse_arch(const char *arch) | |
1930 | { | |
6ff05e18 | 1931 | #if HAVE_SYS_PERSONALITY_H |
525f0002 CS |
1932 | struct per_name { |
1933 | char *name; | |
1934 | unsigned long per; | |
bb8d8207 | 1935 | } pername[] = { |
525f0002 | 1936 | { "x86", PER_LINUX32 }, |
bb8d8207 DE |
1937 | { "linux32", PER_LINUX32 }, |
1938 | { "i386", PER_LINUX32 }, | |
1939 | { "i486", PER_LINUX32 }, | |
1940 | { "i586", PER_LINUX32 }, | |
525f0002 | 1941 | { "i686", PER_LINUX32 }, |
bb8d8207 DE |
1942 | { "athlon", PER_LINUX32 }, |
1943 | { "linux64", PER_LINUX }, | |
525f0002 CS |
1944 | { "x86_64", PER_LINUX }, |
1945 | { "amd64", PER_LINUX }, | |
1946 | }; | |
1947 | size_t len = sizeof(pername) / sizeof(pername[0]); | |
1948 | ||
1949 | int i; | |
1950 | ||
1951 | for (i = 0; i < len; i++) { | |
1952 | if (!strcmp(pername[i].name, arch)) | |
1953 | return pername[i].per; | |
1954 | } | |
6ff05e18 | 1955 | #endif |
525f0002 CS |
1956 | |
1957 | return -1; | |
1958 | } | |
72d0e1cb | 1959 | |
4d69b293 NK |
1960 | int lxc_fill_elevated_privileges(char *flaglist, int *flags) |
1961 | { | |
1962 | char *token, *saveptr = NULL; | |
1963 | int i, aflag; | |
1964 | struct { const char *token; int flag; } all_privs[] = { | |
1965 | { "CGROUP", LXC_ATTACH_MOVE_TO_CGROUP }, | |
1966 | { "CAP", LXC_ATTACH_DROP_CAPABILITIES }, | |
1967 | { "LSM", LXC_ATTACH_LSM_EXEC }, | |
1968 | { NULL, 0 } | |
1969 | }; | |
1970 | ||
1971 | if (!flaglist) { | |
1972 | /* for the sake of backward compatibility, drop all privileges | |
1973 | if none is specified */ | |
1974 | for (i = 0; all_privs[i].token; i++) { | |
1975 | *flags |= all_privs[i].flag; | |
1976 | } | |
1977 | return 0; | |
1978 | } | |
1979 | ||
1980 | token = strtok_r(flaglist, "|", &saveptr); | |
1981 | while (token) { | |
1982 | aflag = -1; | |
1983 | for (i = 0; all_privs[i].token; i++) { | |
1984 | if (!strcmp(all_privs[i].token, token)) | |
1985 | aflag = all_privs[i].flag; | |
1986 | } | |
1987 | if (aflag < 0) | |
1988 | return -1; | |
1989 | ||
1990 | *flags |= aflag; | |
1991 | ||
1992 | token = strtok_r(NULL, "|", &saveptr); | |
1993 | } | |
1994 | return 0; | |
1995 | } | |
1996 | ||
72d0e1cb SG |
1997 | static int lxc_get_conf_int(struct lxc_conf *c, char *retv, int inlen, int v) |
1998 | { | |
1999 | if (!retv) | |
2000 | inlen = 0; | |
2001 | else | |
2002 | memset(retv, 0, inlen); | |
2003 | return snprintf(retv, inlen, "%d", v); | |
2004 | } | |
2005 | ||
2006 | static int lxc_get_arch_entry(struct lxc_conf *c, char *retv, int inlen) | |
2007 | { | |
6ff05e18 | 2008 | int fulllen = 0; |
72d0e1cb SG |
2009 | |
2010 | if (!retv) | |
2011 | inlen = 0; | |
2012 | else | |
2013 | memset(retv, 0, inlen); | |
2014 | ||
6ff05e18 SG |
2015 | #if HAVE_SYS_PERSONALITY_H |
2016 | int len = 0; | |
2017 | ||
72d0e1cb | 2018 | switch(c->personality) { |
14622799 | 2019 | case PER_LINUX32: strprint(retv, inlen, "i686"); break; |
72d0e1cb SG |
2020 | case PER_LINUX: strprint(retv, inlen, "x86_64"); break; |
2021 | default: break; | |
2022 | } | |
6ff05e18 | 2023 | #endif |
72d0e1cb SG |
2024 | |
2025 | return fulllen; | |
2026 | } | |
2027 | ||
2028 | /* | |
2029 | * If you ask for a specific cgroup value, i.e. lxc.cgroup.devices.list, | |
2030 | * then just the value(s) will be printed. Since there still could be | |
2031 | * more than one, it is newline-separated. | |
2032 | * (Maybe that's ambigous, since some values, i.e. devices.list, will | |
2033 | * already have newlines?) | |
2034 | * If you ask for 'lxc.cgroup", then all cgroup entries will be printed, | |
2035 | * in 'lxc.cgroup.subsystem.key = value' format. | |
2036 | */ | |
12a50cc6 DE |
2037 | static int lxc_get_cgroup_entry(struct lxc_conf *c, char *retv, int inlen, |
2038 | const char *key) | |
72d0e1cb SG |
2039 | { |
2040 | int fulllen = 0, len; | |
2041 | int all = 0; | |
2042 | struct lxc_list *it; | |
2043 | ||
2044 | if (!retv) | |
2045 | inlen = 0; | |
2046 | else | |
2047 | memset(retv, 0, inlen); | |
2048 | ||
2049 | if (strcmp(key, "all") == 0) | |
2050 | all = 1; | |
2051 | ||
2052 | lxc_list_for_each(it, &c->cgroup) { | |
2053 | struct lxc_cgroup *cg = it->elem; | |
2054 | if (all) { | |
2055 | strprint(retv, inlen, "lxc.cgroup.%s = %s\n", cg->subsystem, cg->value); | |
2056 | } else if (strcmp(cg->subsystem, key) == 0) { | |
2057 | strprint(retv, inlen, "%s\n", cg->value); | |
2058 | } | |
2059 | } | |
2060 | return fulllen; | |
2061 | } | |
2062 | ||
12a50cc6 DE |
2063 | static int lxc_get_item_hooks(struct lxc_conf *c, char *retv, int inlen, |
2064 | const char *key) | |
72d0e1cb SG |
2065 | { |
2066 | char *subkey; | |
2067 | int len, fulllen = 0, found = -1; | |
2068 | struct lxc_list *it; | |
2069 | int i; | |
2070 | ||
2071 | /* "lxc.hook.mount" */ | |
46cd2845 PL |
2072 | subkey = strchr(key, '.'); |
2073 | if (subkey) subkey = strchr(subkey+1, '.'); | |
72d0e1cb SG |
2074 | if (!subkey) |
2075 | return -1; | |
2076 | subkey++; | |
2077 | if (!*subkey) | |
2078 | return -1; | |
2079 | for (i=0; i<NUM_LXC_HOOKS; i++) { | |
2080 | if (strcmp(lxchook_names[i], subkey) == 0) { | |
2081 | found=i; | |
2082 | break; | |
2083 | } | |
2084 | } | |
2085 | if (found == -1) | |
2086 | return -1; | |
2087 | ||
2088 | if (!retv) | |
2089 | inlen = 0; | |
2090 | else | |
2091 | memset(retv, 0, inlen); | |
2092 | ||
2093 | lxc_list_for_each(it, &c->hooks[found]) { | |
2094 | strprint(retv, inlen, "%s\n", (char *)it->elem); | |
2095 | } | |
2096 | return fulllen; | |
2097 | } | |
2098 | ||
ee1e7aa0 SG |
2099 | static int lxc_get_item_groups(struct lxc_conf *c, char *retv, int inlen) |
2100 | { | |
2101 | int len, fulllen = 0; | |
2102 | struct lxc_list *it; | |
2103 | ||
2104 | if (!retv) | |
2105 | inlen = 0; | |
2106 | else | |
2107 | memset(retv, 0, inlen); | |
2108 | ||
2109 | lxc_list_for_each(it, &c->groups) { | |
2110 | strprint(retv, inlen, "%s\n", (char *)it->elem); | |
2111 | } | |
2112 | return fulllen; | |
2113 | } | |
2114 | ||
ab799c0b SG |
2115 | static int lxc_get_item_environment(struct lxc_conf *c, char *retv, int inlen) |
2116 | { | |
2117 | int len, fulllen = 0; | |
2118 | struct lxc_list *it; | |
2119 | ||
2120 | if (!retv) | |
2121 | inlen = 0; | |
2122 | else | |
2123 | memset(retv, 0, inlen); | |
2124 | ||
2125 | lxc_list_for_each(it, &c->environment) { | |
2126 | strprint(retv, inlen, "%s\n", (char *)it->elem); | |
2127 | } | |
2128 | return fulllen; | |
2129 | } | |
2130 | ||
72d0e1cb SG |
2131 | static int lxc_get_item_cap_drop(struct lxc_conf *c, char *retv, int inlen) |
2132 | { | |
2133 | int len, fulllen = 0; | |
2134 | struct lxc_list *it; | |
2135 | ||
2136 | if (!retv) | |
2137 | inlen = 0; | |
2138 | else | |
2139 | memset(retv, 0, inlen); | |
2140 | ||
2141 | lxc_list_for_each(it, &c->caps) { | |
2142 | strprint(retv, inlen, "%s\n", (char *)it->elem); | |
2143 | } | |
2144 | return fulllen; | |
2145 | } | |
2146 | ||
1fb86a7c SH |
2147 | static int lxc_get_item_cap_keep(struct lxc_conf *c, char *retv, int inlen) |
2148 | { | |
2149 | int len, fulllen = 0; | |
2150 | struct lxc_list *it; | |
2151 | ||
2152 | if (!retv) | |
2153 | inlen = 0; | |
2154 | else | |
2155 | memset(retv, 0, inlen); | |
2156 | ||
2157 | lxc_list_for_each(it, &c->keepcaps) { | |
2158 | strprint(retv, inlen, "%s\n", (char *)it->elem); | |
2159 | } | |
2160 | return fulllen; | |
2161 | } | |
2162 | ||
72d0e1cb SG |
2163 | static int lxc_get_mount_entries(struct lxc_conf *c, char *retv, int inlen) |
2164 | { | |
2165 | int len, fulllen = 0; | |
2166 | struct lxc_list *it; | |
2167 | ||
2168 | if (!retv) | |
2169 | inlen = 0; | |
2170 | else | |
2171 | memset(retv, 0, inlen); | |
2172 | ||
2173 | lxc_list_for_each(it, &c->mount_list) { | |
2174 | strprint(retv, inlen, "%s\n", (char *)it->elem); | |
2175 | } | |
2176 | return fulllen; | |
2177 | } | |
2178 | ||
b099e9e9 SH |
2179 | static int lxc_get_auto_mounts(struct lxc_conf *c, char *retv, int inlen) |
2180 | { | |
2181 | int len, fulllen = 0; | |
0769b82a | 2182 | const char *sep = ""; |
b099e9e9 SH |
2183 | |
2184 | if (!retv) | |
2185 | inlen = 0; | |
2186 | else | |
2187 | memset(retv, 0, inlen); | |
2188 | ||
2189 | if (!(c->auto_mounts & LXC_AUTO_ALL_MASK)) | |
2190 | return 0; | |
2191 | ||
2192 | switch (c->auto_mounts & LXC_AUTO_PROC_MASK) { | |
0769b82a CS |
2193 | case LXC_AUTO_PROC_MIXED: strprint(retv, inlen, "%sproc:mixed", sep); sep = " "; break; |
2194 | case LXC_AUTO_PROC_RW: strprint(retv, inlen, "%sproc:rw", sep); sep = " "; break; | |
b099e9e9 SH |
2195 | default: break; |
2196 | } | |
2197 | switch (c->auto_mounts & LXC_AUTO_SYS_MASK) { | |
0769b82a CS |
2198 | case LXC_AUTO_SYS_RO: strprint(retv, inlen, "%ssys:ro", sep); sep = " "; break; |
2199 | case LXC_AUTO_SYS_RW: strprint(retv, inlen, "%ssys:rw", sep); sep = " "; break; | |
b099e9e9 SH |
2200 | default: break; |
2201 | } | |
2202 | switch (c->auto_mounts & LXC_AUTO_CGROUP_MASK) { | |
0769b82a CS |
2203 | case LXC_AUTO_CGROUP_NOSPEC: strprint(retv, inlen, "%scgroup", sep); sep = " "; break; |
2204 | case LXC_AUTO_CGROUP_MIXED: strprint(retv, inlen, "%scgroup:mixed", sep); sep = " "; break; | |
2205 | case LXC_AUTO_CGROUP_RO: strprint(retv, inlen, "%scgroup:ro", sep); sep = " "; break; | |
2206 | case LXC_AUTO_CGROUP_RW: strprint(retv, inlen, "%scgroup:rw", sep); sep = " "; break; | |
2207 | case LXC_AUTO_CGROUP_FULL_NOSPEC: strprint(retv, inlen, "%scgroup-full", sep); sep = " "; break; | |
2208 | case LXC_AUTO_CGROUP_FULL_MIXED: strprint(retv, inlen, "%scgroup-full:mixed", sep); sep = " "; break; | |
2209 | case LXC_AUTO_CGROUP_FULL_RO: strprint(retv, inlen, "%scgroup-full:ro", sep); sep = " "; break; | |
2210 | case LXC_AUTO_CGROUP_FULL_RW: strprint(retv, inlen, "%scgroup-full:rw", sep); sep = " "; break; | |
b099e9e9 SH |
2211 | default: break; |
2212 | } | |
0769b82a | 2213 | |
b099e9e9 SH |
2214 | return fulllen; |
2215 | } | |
2216 | ||
72d0e1cb SG |
2217 | /* |
2218 | * lxc.network.0.XXX, where XXX can be: name, type, link, flags, type, | |
8fc8295a | 2219 | * macvlan.mode, veth.pair, vlan, ipv4, ipv6, script.up, hwaddr, mtu, |
9eaf8a59 | 2220 | * ipv4.gateway, ipv6.gateway. ipvX.gateway can return 'auto' instead |
72d0e1cb SG |
2221 | * of an address. ipv4 and ipv6 return lists (newline-separated). |
2222 | * things like veth.pair return '' if invalid (i.e. if called for vlan | |
2223 | * type). | |
2224 | */ | |
12a50cc6 DE |
2225 | static int lxc_get_item_nic(struct lxc_conf *c, char *retv, int inlen, |
2226 | const char *key) | |
72d0e1cb SG |
2227 | { |
2228 | char *p1; | |
fe88b9d2 | 2229 | int len, fulllen = 0; |
72d0e1cb SG |
2230 | struct lxc_netdev *netdev; |
2231 | ||
2232 | if (!retv) | |
2233 | inlen = 0; | |
2234 | else | |
2235 | memset(retv, 0, inlen); | |
2236 | ||
46cd2845 | 2237 | p1 = strchr(key, '.'); |
72d0e1cb SG |
2238 | if (!p1 || *(p1+1) == '\0') return -1; |
2239 | p1++; | |
2240 | ||
2241 | netdev = get_netdev_from_key(key, &c->network); | |
2242 | if (!netdev) | |
2243 | return -1; | |
2244 | if (strcmp(p1, "name") == 0) { | |
2245 | if (netdev->name) | |
2246 | strprint(retv, inlen, "%s", netdev->name); | |
2247 | } else if (strcmp(p1, "type") == 0) { | |
2248 | strprint(retv, inlen, "%s", lxc_net_type_to_str(netdev->type)); | |
2249 | } else if (strcmp(p1, "link") == 0) { | |
2250 | if (netdev->link) | |
2251 | strprint(retv, inlen, "%s", netdev->link); | |
2252 | } else if (strcmp(p1, "flags") == 0) { | |
2253 | if (netdev->flags & IFF_UP) | |
2254 | strprint(retv, inlen, "up"); | |
8fc8295a | 2255 | } else if (strcmp(p1, "script.up") == 0) { |
72d0e1cb SG |
2256 | if (netdev->upscript) |
2257 | strprint(retv, inlen, "%s", netdev->upscript); | |
8fc8295a DE |
2258 | } else if (strcmp(p1, "script.down") == 0) { |
2259 | if (netdev->downscript) | |
2260 | strprint(retv, inlen, "%s", netdev->downscript); | |
72d0e1cb SG |
2261 | } else if (strcmp(p1, "hwaddr") == 0) { |
2262 | if (netdev->hwaddr) | |
2263 | strprint(retv, inlen, "%s", netdev->hwaddr); | |
2264 | } else if (strcmp(p1, "mtu") == 0) { | |
2265 | if (netdev->mtu) | |
2266 | strprint(retv, inlen, "%s", netdev->mtu); | |
2267 | } else if (strcmp(p1, "macvlan.mode") == 0) { | |
2268 | if (netdev->type == LXC_NET_MACVLAN) { | |
2269 | const char *mode; | |
2270 | switch (netdev->priv.macvlan_attr.mode) { | |
2271 | case MACVLAN_MODE_PRIVATE: mode = "private"; break; | |
2272 | case MACVLAN_MODE_VEPA: mode = "vepa"; break; | |
2273 | case MACVLAN_MODE_BRIDGE: mode = "bridge"; break; | |
2274 | default: mode = "(invalid)"; break; | |
2275 | } | |
2276 | strprint(retv, inlen, "%s", mode); | |
2277 | } | |
2278 | } else if (strcmp(p1, "veth.pair") == 0) { | |
11029c02 DE |
2279 | if (netdev->type == LXC_NET_VETH) { |
2280 | strprint(retv, inlen, "%s", | |
2281 | netdev->priv.veth_attr.pair ? | |
2282 | netdev->priv.veth_attr.pair : | |
2283 | netdev->priv.veth_attr.veth1); | |
2284 | } | |
72d0e1cb SG |
2285 | } else if (strcmp(p1, "vlan") == 0) { |
2286 | if (netdev->type == LXC_NET_VLAN) { | |
2287 | strprint(retv, inlen, "%d", netdev->priv.vlan_attr.vid); | |
2288 | } | |
9eaf8a59 | 2289 | } else if (strcmp(p1, "ipv4.gateway") == 0) { |
72d0e1cb SG |
2290 | if (netdev->ipv4_gateway_auto) { |
2291 | strprint(retv, inlen, "auto"); | |
2292 | } else if (netdev->ipv4_gateway) { | |
2293 | char buf[INET_ADDRSTRLEN]; | |
2294 | inet_ntop(AF_INET, netdev->ipv4_gateway, buf, sizeof(buf)); | |
2295 | strprint(retv, inlen, "%s", buf); | |
2296 | } | |
2297 | } else if (strcmp(p1, "ipv4") == 0) { | |
2298 | struct lxc_list *it2; | |
2299 | lxc_list_for_each(it2, &netdev->ipv4) { | |
2300 | struct lxc_inetdev *i = it2->elem; | |
2301 | char buf[INET_ADDRSTRLEN]; | |
2302 | inet_ntop(AF_INET, &i->addr, buf, sizeof(buf)); | |
28417b5a | 2303 | strprint(retv, inlen, "%s/%d\n", buf, i->prefix); |
72d0e1cb | 2304 | } |
9eaf8a59 | 2305 | } else if (strcmp(p1, "ipv6.gateway") == 0) { |
72d0e1cb SG |
2306 | if (netdev->ipv6_gateway_auto) { |
2307 | strprint(retv, inlen, "auto"); | |
2308 | } else if (netdev->ipv6_gateway) { | |
6afb165d AN |
2309 | char buf[INET6_ADDRSTRLEN]; |
2310 | inet_ntop(AF_INET6, netdev->ipv6_gateway, buf, sizeof(buf)); | |
72d0e1cb SG |
2311 | strprint(retv, inlen, "%s", buf); |
2312 | } | |
2313 | } else if (strcmp(p1, "ipv6") == 0) { | |
2314 | struct lxc_list *it2; | |
2315 | lxc_list_for_each(it2, &netdev->ipv6) { | |
6afb165d AN |
2316 | struct lxc_inet6dev *i = it2->elem; |
2317 | char buf[INET6_ADDRSTRLEN]; | |
72d0e1cb | 2318 | inet_ntop(AF_INET6, &i->addr, buf, sizeof(buf)); |
28417b5a | 2319 | strprint(retv, inlen, "%s/%d\n", buf, i->prefix); |
72d0e1cb SG |
2320 | } |
2321 | } | |
2322 | return fulllen; | |
2323 | } | |
2324 | ||
2325 | static int lxc_get_item_network(struct lxc_conf *c, char *retv, int inlen) | |
2326 | { | |
2327 | int len, fulllen = 0; | |
2328 | struct lxc_list *it; | |
2329 | ||
2330 | if (!retv) | |
2331 | inlen = 0; | |
2332 | else | |
2333 | memset(retv, 0, inlen); | |
2334 | ||
2335 | lxc_list_for_each(it, &c->network) { | |
2336 | struct lxc_netdev *n = it->elem; | |
2337 | const char *t = lxc_net_type_to_str(n->type); | |
2338 | strprint(retv, inlen, "%s\n", t ? t : "(invalid)"); | |
2339 | } | |
2340 | return fulllen; | |
2341 | } | |
2342 | ||
12a50cc6 DE |
2343 | int lxc_get_config_item(struct lxc_conf *c, const char *key, char *retv, |
2344 | int inlen) | |
72d0e1cb | 2345 | { |
4a85ce2a | 2346 | const char *v = NULL; |
72d0e1cb SG |
2347 | |
2348 | if (strcmp(key, "lxc.mount.entry") == 0) | |
2349 | return lxc_get_mount_entries(c, retv, inlen); | |
b099e9e9 SH |
2350 | else if (strcmp(key, "lxc.mount.auto") == 0) |
2351 | return lxc_get_auto_mounts(c, retv, inlen); | |
72d0e1cb SG |
2352 | else if (strcmp(key, "lxc.mount") == 0) |
2353 | v = c->fstab; | |
2354 | else if (strcmp(key, "lxc.tty") == 0) | |
2355 | return lxc_get_conf_int(c, retv, inlen, c->tty); | |
2356 | else if (strcmp(key, "lxc.pts") == 0) | |
2357 | return lxc_get_conf_int(c, retv, inlen, c->pts); | |
2358 | else if (strcmp(key, "lxc.devttydir") == 0) | |
2359 | v = c->ttydir; | |
2360 | else if (strcmp(key, "lxc.arch") == 0) | |
2361 | return lxc_get_arch_entry(c, retv, inlen); | |
2362 | else if (strcmp(key, "lxc.aa_profile") == 0) | |
fe4de9a6 | 2363 | v = c->lsm_aa_profile; |
7aff4f43 SH |
2364 | else if (strcmp(key, "lxc.aa_allow_incomplete") == 0) |
2365 | return lxc_get_conf_int(c, retv, inlen, c->lsm_aa_allow_incomplete); | |
fe4de9a6 DE |
2366 | else if (strcmp(key, "lxc.se_context") == 0) |
2367 | v = c->lsm_se_context; | |
4a85ce2a | 2368 | else if (strcmp(key, "lxc.logfile") == 0) |
9ea87d5d | 2369 | v = lxc_log_get_file(); |
4a85ce2a | 2370 | else if (strcmp(key, "lxc.loglevel") == 0) |
9ea87d5d | 2371 | v = lxc_log_priority_to_string(lxc_log_get_level()); |
72d0e1cb SG |
2372 | else if (strcmp(key, "lxc.cgroup") == 0) // all cgroup info |
2373 | return lxc_get_cgroup_entry(c, retv, inlen, "all"); | |
2374 | else if (strncmp(key, "lxc.cgroup.", 11) == 0) // specific cgroup info | |
2375 | return lxc_get_cgroup_entry(c, retv, inlen, key + 11); | |
2376 | else if (strcmp(key, "lxc.utsname") == 0) | |
64fca455 | 2377 | v = c->utsname ? c->utsname->nodename : NULL; |
96f15ca1 SH |
2378 | else if (strcmp(key, "lxc.console.logfile") == 0) |
2379 | v = c->console.log_path; | |
72d0e1cb SG |
2380 | else if (strcmp(key, "lxc.console") == 0) |
2381 | v = c->console.path; | |
2382 | else if (strcmp(key, "lxc.rootfs.mount") == 0) | |
2383 | v = c->rootfs.mount; | |
a17b1e65 SG |
2384 | else if (strcmp(key, "lxc.rootfs.options") == 0) |
2385 | v = c->rootfs.options; | |
72d0e1cb SG |
2386 | else if (strcmp(key, "lxc.rootfs") == 0) |
2387 | v = c->rootfs.path; | |
2388 | else if (strcmp(key, "lxc.pivotdir") == 0) | |
2389 | v = c->rootfs.pivot; | |
2390 | else if (strcmp(key, "lxc.cap.drop") == 0) | |
2391 | return lxc_get_item_cap_drop(c, retv, inlen); | |
1fb86a7c SH |
2392 | else if (strcmp(key, "lxc.cap.keep") == 0) |
2393 | return lxc_get_item_cap_keep(c, retv, inlen); | |
72d0e1cb SG |
2394 | else if (strncmp(key, "lxc.hook", 8) == 0) |
2395 | return lxc_get_item_hooks(c, retv, inlen, key); | |
2396 | else if (strcmp(key, "lxc.network") == 0) | |
2397 | return lxc_get_item_network(c, retv, inlen); | |
2398 | else if (strncmp(key, "lxc.network.", 12) == 0) | |
2399 | return lxc_get_item_nic(c, retv, inlen, key + 12); | |
ee1e7aa0 SG |
2400 | else if (strcmp(key, "lxc.start.auto") == 0) |
2401 | return lxc_get_conf_int(c, retv, inlen, c->start_auto); | |
2402 | else if (strcmp(key, "lxc.start.delay") == 0) | |
2403 | return lxc_get_conf_int(c, retv, inlen, c->start_delay); | |
2404 | else if (strcmp(key, "lxc.start.order") == 0) | |
2405 | return lxc_get_conf_int(c, retv, inlen, c->start_order); | |
2406 | else if (strcmp(key, "lxc.group") == 0) | |
2407 | return lxc_get_item_groups(c, retv, inlen); | |
58e0f57d SH |
2408 | else if (strcmp(key, "lxc.seccomp") == 0) |
2409 | v = c->seccomp; | |
ab799c0b SG |
2410 | else if (strcmp(key, "lxc.environment") == 0) |
2411 | return lxc_get_item_environment(c, retv, inlen); | |
67c660d0 SG |
2412 | else if (strcmp(key, "lxc.init_cmd") == 0) |
2413 | v = c->init_cmd; | |
72d0e1cb SG |
2414 | else return -1; |
2415 | ||
2416 | if (!v) | |
2417 | return 0; | |
2418 | if (retv && inlen >= strlen(v) + 1) | |
2419 | strncpy(retv, v, strlen(v)+1); | |
2420 | return strlen(v); | |
2421 | } | |
2422 | ||
12a50cc6 | 2423 | int lxc_clear_config_item(struct lxc_conf *c, const char *key) |
72d0e1cb SG |
2424 | { |
2425 | if (strcmp(key, "lxc.network") == 0) | |
2426 | return lxc_clear_config_network(c); | |
2427 | else if (strncmp(key, "lxc.network.", 12) == 0) | |
2428 | return lxc_clear_nic(c, key + 12); | |
2429 | else if (strcmp(key, "lxc.cap.drop") == 0) | |
2430 | return lxc_clear_config_caps(c); | |
1fb86a7c SH |
2431 | else if (strcmp(key, "lxc.cap.keep") == 0) |
2432 | return lxc_clear_config_keepcaps(c); | |
72d0e1cb SG |
2433 | else if (strncmp(key, "lxc.cgroup", 10) == 0) |
2434 | return lxc_clear_cgroups(c, key); | |
2435 | else if (strcmp(key, "lxc.mount.entries") == 0) | |
2436 | return lxc_clear_mount_entries(c); | |
b099e9e9 SH |
2437 | else if (strcmp(key, "lxc.mount.auto") == 0) |
2438 | return lxc_clear_automounts(c); | |
17ed13a3 SH |
2439 | else if (strncmp(key, "lxc.hook", 8) == 0) |
2440 | return lxc_clear_hooks(c, key); | |
ee1e7aa0 SG |
2441 | else if (strncmp(key, "lxc.group", 9) == 0) |
2442 | return lxc_clear_groups(c); | |
fcdc3e50 | 2443 | else if (strncmp(key, "lxc.environment", 15) == 0) |
ab799c0b | 2444 | return lxc_clear_environment(c); |
fcdc3e50 | 2445 | else if (strncmp(key, "lxc.id_map", 10) == 0) |
26f1b390 | 2446 | return lxc_clear_idmaps(c); |
72d0e1cb SG |
2447 | return -1; |
2448 | } | |
2449 | ||
2450 | /* | |
2451 | * writing out a confile. | |
2452 | */ | |
2453 | void write_config(FILE *fout, struct lxc_conf *c) | |
2454 | { | |
6b0d5538 SH |
2455 | size_t len = c->unexpanded_len; |
2456 | int ret; | |
72d0e1cb | 2457 | |
6b0d5538 SH |
2458 | if (!len) |
2459 | return; | |
2460 | ret = fwrite(c->unexpanded_config, 1, len, fout); | |
2461 | if (ret != len) | |
2462 | SYSERROR("Error writing configuration file"); | |
2463 | } | |
f979ac15 | 2464 | |
6b0d5538 SH |
2465 | bool do_append_unexp_config_line(struct lxc_conf *conf, const char *key, const char *v) |
2466 | { | |
2467 | int ret; | |
2468 | size_t len = strlen(key) + strlen(v) + 4; | |
2469 | char *tmp = alloca(len); | |
4184c3e1 | 2470 | |
6b0d5538 SH |
2471 | ret = snprintf(tmp, len, "%s = %s", key, v); |
2472 | if (ret < 0 || ret >= len) | |
2473 | return false; | |
2474 | ||
2475 | /* Save the line verbatim into unexpanded_conf */ | |
2476 | if (append_unexp_config_line(tmp, conf)) | |
2477 | return false; | |
2478 | ||
2479 | return true; | |
2480 | } | |
2481 | ||
2482 | void clear_unexp_config_line(struct lxc_conf *conf, const char *key, bool rm_subkeys) | |
2483 | { | |
2484 | char *lstart = conf->unexpanded_config, *lend; | |
2485 | ||
2486 | if (!conf->unexpanded_config) | |
2487 | return; | |
2488 | while (*lstart) { | |
2489 | lend = strchr(lstart, '\n'); | |
2490 | char v; | |
2491 | if (!lend) | |
2492 | lend = lstart + strlen(lstart); | |
2493 | else | |
2494 | lend++; | |
2495 | if (strncmp(lstart, key, strlen(key)) != 0) { | |
2496 | lstart = lend; | |
2497 | continue; | |
5f62730e | 2498 | } |
6b0d5538 SH |
2499 | if (!rm_subkeys) { |
2500 | v = lstart[strlen(key)]; | |
2501 | if (!isspace(v) && v != '=') { | |
2502 | lstart = lend; | |
2503 | continue; | |
2504 | } | |
5f62730e | 2505 | } |
6b0d5538 SH |
2506 | conf->unexpanded_len -= (lend - lstart); |
2507 | if (*lend == '\0') { | |
2508 | *lstart = '\0'; | |
2509 | return; | |
fd986e08 | 2510 | } |
6b0d5538 | 2511 | memmove(lstart, lend, strlen(lend)+1); |
fd986e08 | 2512 | } |
6b0d5538 SH |
2513 | } |
2514 | ||
67702c21 SH |
2515 | bool clone_update_unexp_hooks(struct lxc_conf *conf, const char *oldpath, |
2516 | const char *newpath, const char *oldname, const char *newname) | |
6b0d5538 | 2517 | { |
67702c21 SH |
2518 | const char *key = "lxc.hook"; |
2519 | int ret; | |
2520 | char *lstart = conf->unexpanded_config, *lend, *p; | |
2521 | size_t newdirlen = strlen(newpath) + strlen(newname) + 1; | |
2522 | size_t olddirlen = strlen(oldpath) + strlen(oldname) + 1; | |
2523 | char *olddir = alloca(olddirlen + 1); | |
2524 | char *newdir = alloca(newdirlen + 1); | |
2525 | ||
2526 | ret = snprintf(olddir, olddirlen+1, "%s/%s", oldpath, oldname); | |
2527 | if (ret < 0 || ret >= olddirlen+1) { | |
2528 | ERROR("Bug in %s", __func__); | |
2529 | return false; | |
2530 | } | |
2531 | ret = snprintf(newdir, newdirlen+1, "%s/%s", newpath, newname); | |
2532 | if (ret < 0 || ret >= newdirlen+1) { | |
2533 | ERROR("Bug in %s", __func__); | |
2534 | return false; | |
2535 | } | |
2536 | if (!conf->unexpanded_config) | |
2537 | return true; | |
2538 | while (*lstart) { | |
2539 | lend = strchr(lstart, '\n'); | |
2540 | if (!lend) | |
2541 | lend = lstart + strlen(lstart); | |
2542 | else | |
2543 | lend++; | |
2544 | if (strncmp(lstart, key, strlen(key)) != 0) { | |
2545 | lstart = lend; | |
2546 | continue; | |
2547 | } | |
2548 | p = strchr(lstart+strlen(key), '='); | |
2549 | if (!p) { | |
2550 | lstart = lend; | |
2551 | continue; | |
2552 | } | |
2553 | p++; | |
2554 | while (isblank(*p)) | |
2555 | p++; | |
2556 | if (!*p) | |
2557 | return true; | |
2558 | if (strncmp(p, olddir, strlen(olddir)) != 0) { | |
2559 | lstart = lend; | |
2560 | continue; | |
2561 | } | |
2562 | /* replace the olddir with newdir */ | |
2563 | if (olddirlen >= newdirlen) { | |
2564 | size_t diff = olddirlen - newdirlen; | |
2565 | memcpy(p, newdir, newdirlen); | |
2566 | if (olddirlen != newdirlen) { | |
2567 | memmove(lend-diff, lend, strlen(lend)+1); | |
2568 | lend -= diff; | |
2569 | conf->unexpanded_len -= diff; | |
2570 | } | |
2571 | lstart = lend; | |
2572 | } else { | |
2573 | char *new; | |
2574 | size_t diff = newdirlen - olddirlen; | |
2575 | size_t oldlen = conf->unexpanded_len; | |
2576 | size_t newlen = oldlen + diff; | |
2577 | size_t poffset = p - conf->unexpanded_config; | |
2578 | new = realloc(conf->unexpanded_config, newlen); | |
2579 | if (!new) { | |
2580 | ERROR("Out of memory"); | |
6b0d5538 | 2581 | return false; |
67702c21 SH |
2582 | } |
2583 | conf->unexpanded_len = newlen; | |
2584 | new[newlen-1] = '\0'; | |
2585 | lend = new + (lend - conf->unexpanded_config); | |
2586 | /* move over the remainder, /$hookname\n$rest */ | |
2587 | memmove(new+poffset+newdirlen, | |
2588 | new+poffset+olddirlen, | |
2589 | oldlen-poffset-olddirlen); | |
2590 | conf->unexpanded_config = new; | |
2591 | memcpy(new+poffset, newdir, newdirlen); | |
2592 | lstart = lend + diff; | |
fd986e08 AV |
2593 | } |
2594 | } | |
6b0d5538 SH |
2595 | return true; |
2596 | } | |
2597 | ||
2598 | #define DO(cmd) { \ | |
2599 | if (!(cmd)) { \ | |
2600 | ERROR("Error writing to new config"); \ | |
2601 | return false; \ | |
2602 | } \ | |
2603 | } | |
2604 | ||
67702c21 SH |
2605 | static void new_hwaddr(char *hwaddr) |
2606 | { | |
2607 | FILE *f; | |
2608 | f = fopen("/dev/urandom", "r"); | |
2609 | if (f) { | |
2610 | unsigned int seed; | |
2611 | int ret = fread(&seed, sizeof(seed), 1, f); | |
2612 | if (ret != 1) | |
2613 | seed = time(NULL); | |
2614 | fclose(f); | |
2615 | srand(seed); | |
2616 | } else | |
2617 | srand(time(NULL)); | |
2618 | snprintf(hwaddr, 18, "00:16:3e:%02x:%02x:%02x", | |
2619 | rand() % 255, rand() % 255, rand() % 255); | |
2620 | } | |
2621 | ||
2622 | /* | |
2623 | * This is called only from clone. | |
2624 | * We wish to update all hwaddrs in the unexpanded config file. We | |
2625 | * can't/don't want to update any which come from lxc.includes (there | |
2626 | * shouldn't be any). | |
2627 | * We can't just walk the c->lxc-conf->network list because that includes | |
2628 | * netifs from the include files. So we update the ones which we find in | |
2629 | * the unexp config file, then find the original macaddr in the | |
2630 | * conf->network, and update that to the same value. | |
2631 | */ | |
2632 | bool network_new_hwaddrs(struct lxc_conf *conf) | |
6b0d5538 SH |
2633 | { |
2634 | struct lxc_list *it; | |
2635 | ||
67702c21 SH |
2636 | const char *key = "lxc.network.hwaddr"; |
2637 | char *lstart = conf->unexpanded_config, *lend, *p, *p2; | |
6b0d5538 | 2638 | |
67702c21 SH |
2639 | if (!conf->unexpanded_config) |
2640 | return true; | |
2641 | while (*lstart) { | |
2642 | char newhwaddr[18], oldhwaddr[17]; | |
2643 | lend = strchr(lstart, '\n'); | |
2644 | if (!lend) | |
2645 | lend = lstart + strlen(lstart); | |
2646 | else | |
2647 | lend++; | |
2648 | if (strncmp(lstart, key, strlen(key)) != 0) { | |
2649 | lstart = lend; | |
2650 | continue; | |
72d0e1cb | 2651 | } |
67702c21 SH |
2652 | p = strchr(lstart+strlen(key), '='); |
2653 | if (!p) { | |
2654 | lstart = lend; | |
2655 | continue; | |
72d0e1cb | 2656 | } |
67702c21 SH |
2657 | p++; |
2658 | while (isblank(*p)) | |
2659 | p++; | |
2660 | if (!*p) | |
2661 | return true; | |
2662 | p2 = p; | |
2663 | while (*p2 && !isblank(*p2) && *p2 != '\n') | |
2664 | p2++; | |
2665 | if (p2-p != 17) { | |
2666 | WARN("Bad hwaddr entry"); | |
2667 | lstart = lend; | |
2668 | continue; | |
72d0e1cb | 2669 | } |
67702c21 SH |
2670 | memcpy(oldhwaddr, p, 17); |
2671 | new_hwaddr(newhwaddr); | |
2672 | memcpy(p, newhwaddr, 17); | |
2673 | lxc_list_for_each(it, &conf->network) { | |
2674 | struct lxc_netdev *n = it->elem; | |
2675 | if (n->hwaddr && memcmp(oldhwaddr, n->hwaddr, 17) == 0) | |
2676 | memcpy(n->hwaddr, newhwaddr, 17); | |
72d0e1cb | 2677 | } |
67702c21 SH |
2678 | |
2679 | lstart = lend; | |
72d0e1cb | 2680 | } |
6b0d5538 | 2681 | return true; |
72d0e1cb | 2682 | } |