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confile: add getter for lxc.kmsg
[mirror_lxc.git] / src / lxc / confile.c
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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
2e6e3feb 24#define __STDC_FORMAT_MACROS /* Required for PRIu64 to work. */
c2cc9f0a 25#include <stdio.h>
26#include <stdlib.h>
27#include <string.h>
28#include <unistd.h>
29#include <errno.h>
63376d7d 30#include <fcntl.h>
a84b9932 31#include <ctype.h>
2e6e3feb 32#include <inttypes.h> /* Required for PRIu64 to work. */
a84b9932 33#include <signal.h>
63376d7d 34#include <sys/stat.h>
c2cc9f0a 35#include <sys/types.h>
36#include <sys/param.h>
37#include <sys/utsname.h>
38#include <arpa/inet.h>
39#include <netinet/in.h>
40#include <net/if.h>
67702c21 41#include <time.h>
e1daebd9 42#include <dirent.h>
64c57ea1 43#include <syslog.h>
c2cc9f0a 44
d8e48992 45#include "bdev.h"
b2718c72 46#include "parse.h"
6ff05e18 47#include "config.h"
525f0002 48#include "confile.h"
26c39028 49#include "utils.h"
f2363e38
ÇO		 50#include "log.h"
51#include "conf.h"
72d0e1cb 52#include "network.h"
58e0f57d 53#include "lxcseccomp.h"
36eb9bde 54
576400e5 55#if HAVE_IFADDRS_H
56#include <ifaddrs.h>
57#else
58#include <../include/ifaddrs.h>
59#endif
60
6ff05e18
SG		 61#if HAVE_SYS_PERSONALITY_H
62#include <sys/personality.h>
63#endif
64
36eb9bde 65lxc_log_define(lxc_confile, lxc);
576f946d 66
713046e3 67static int set_config_personality(const char *, const char *, struct lxc_conf *);
7b992a3e 68static int get_config_personality(struct lxc_container *, const char *, char *, int);
bdf91ab4 69
713046e3 70static int set_config_pts(const char *, const char *, struct lxc_conf *);
bdf91ab4
CB		 71static int get_config_pts(struct lxc_container *, const char *, char *, int);
72
713046e3 73static int set_config_tty(const char *, const char *, struct lxc_conf *);
5485782f
CB		 74static int get_config_tty(struct lxc_container *, const char *, char *, int);
75
713046e3 76static int set_config_ttydir(const char *, const char *, struct lxc_conf *);
8015e018
CB		 77static int get_config_ttydir(struct lxc_container *, const char *, char *, int);
78
713046e3 79static int set_config_kmsg(const char *, const char *, struct lxc_conf *);
de1ede69
CB		 80static int get_config_kmsg(struct lxc_container *, const char *, char *, int);
81
713046e3
CB		 82static int set_config_lsm_aa_profile(const char *, const char *, struct lxc_conf *);
83static int set_config_lsm_aa_incomplete(const char *, const char *, struct lxc_conf *);
84static int set_config_lsm_se_context(const char *, const char *, struct lxc_conf *);
85static int set_config_cgroup(const char *, const char *, struct lxc_conf *);
86static int set_config_idmap(const char *, const char *, struct lxc_conf *);
87static int set_config_loglevel(const char *, const char *, struct lxc_conf *);
88static int set_config_logfile(const char *, const char *, struct lxc_conf *);
89static int set_config_mount(const char *, const char *, struct lxc_conf *);
90static int set_config_mount_auto(const char *, const char *, struct lxc_conf *);
91static int set_config_fstab(const char *, const char *, struct lxc_conf *);
92static int set_config_rootfs(const char *, const char *, struct lxc_conf *);
93static int set_config_rootfs_mount(const char *, const char *, struct lxc_conf *);
94static int set_config_rootfs_options(const char *, const char *, struct lxc_conf *);
95static int set_config_rootfs_backend(const char *, const char *, struct lxc_conf *);
96static int set_config_pivotdir(const char *, const char *, struct lxc_conf *);
97static int set_config_utsname(const char *, const char *, struct lxc_conf *);
98static int set_config_hook(const char *, const char *, struct lxc_conf *lxc_conf);
99static int set_config_network(const char *, const char *, struct lxc_conf *);
100static int set_config_network_type(const char *, const char *, struct lxc_conf *);
101static int set_config_network_flags(const char *, const char *, struct lxc_conf *);
102static int set_config_network_link(const char *, const char *, struct lxc_conf *);
103static int set_config_network_name(const char *, const char *, struct lxc_conf *);
104static int set_config_network_veth_pair(const char *, const char *, struct lxc_conf *);
105static int set_config_network_macvlan_mode(const char *, const char *, struct lxc_conf *);
106static int set_config_network_hwaddr(const char *, const char *, struct lxc_conf *);
107static int set_config_network_vlan_id(const char *, const char *, struct lxc_conf *);
108static int set_config_network_mtu(const char *, const char *, struct lxc_conf *);
109static int set_config_network_ipv4(const char *, const char *, struct lxc_conf *);
110static int set_config_network_ipv4_gateway(const char *, const char *, struct lxc_conf *);
111static int set_config_network_script_up(const char *, const char *, struct lxc_conf *);
112static int set_config_network_script_down(const char *, const char *, struct lxc_conf *);
113static int set_config_network_ipv6(const char *, const char *, struct lxc_conf *);
114static int set_config_network_ipv6_gateway(const char *, const char *, struct lxc_conf *);
115static int set_config_cap_drop(const char *, const char *, struct lxc_conf *);
116static int set_config_cap_keep(const char *, const char *, struct lxc_conf *);
117static int set_config_console(const char *, const char *, struct lxc_conf *);
118static int set_config_console_logfile(const char *, const char *, struct lxc_conf *);
119static int set_config_seccomp(const char *, const char *, struct lxc_conf *);
120static int set_config_includefile(const char *, const char *, struct lxc_conf *);
121static int set_config_network_nic(const char *, const char *, struct lxc_conf *);
122static int set_config_autodev(const char *, const char *, struct lxc_conf *);
123static int set_config_haltsignal(const char *, const char *, struct lxc_conf *);
124static int set_config_rebootsignal(const char *, const char *, struct lxc_conf *);
125static int set_config_stopsignal(const char *, const char *, struct lxc_conf *);
126static int set_config_start(const char *, const char *, struct lxc_conf *);
127static int set_config_syslog(const char *, const char *, struct lxc_conf *);
128static int set_config_monitor(const char *, const char *, struct lxc_conf *);
129static int set_config_group(const char *, const char *, struct lxc_conf *);
130static int set_config_environment(const char *, const char *, struct lxc_conf *);
131static int set_config_init_cmd(const char *, const char *, struct lxc_conf *);
132static int set_config_init_uid(const char *, const char *, struct lxc_conf *);
133static int set_config_init_gid(const char *, const char *, struct lxc_conf *);
134static int set_config_ephemeral(const char *, const char *, struct lxc_conf *);
135static int set_config_no_new_privs(const char *, const char *, struct lxc_conf *);
136static int set_config_limit(const char *, const char *, struct lxc_conf *);
c2cc9f0a 137
72d0e1cb 138static struct lxc_config_t config[] = {
7b992a3e 139 { "lxc.arch", set_config_personality, get_config_personality, NULL},
bdf91ab4 140 { "lxc.pts", set_config_pts, get_config_pts, NULL},
5485782f 141 { "lxc.tty", set_config_tty, get_config_tty, NULL},
8015e018 142 { "lxc.devttydir", set_config_ttydir, get_config_ttydir, NULL},
de1ede69 143 { "lxc.kmsg", set_config_kmsg, get_config_kmsg, NULL},
713046e3
CB		 144 { "lxc.aa_profile", set_config_lsm_aa_profile, NULL, NULL},
145 { "lxc.aa_allow_incomplete", set_config_lsm_aa_incomplete, NULL, NULL},
146 { "lxc.se_context", set_config_lsm_se_context, NULL, NULL},
147 { "lxc.cgroup", set_config_cgroup, NULL, NULL},
148 { "lxc.id_map", set_config_idmap, NULL, NULL},
149 { "lxc.loglevel", set_config_loglevel, NULL, NULL},
150 { "lxc.logfile", set_config_logfile, NULL, NULL},
151 { "lxc.mount.entry", set_config_mount, NULL, NULL},
152 { "lxc.mount.auto", set_config_mount_auto, NULL, NULL},
153 { "lxc.mount", set_config_fstab, NULL, NULL},
154 { "lxc.rootfs.mount", set_config_rootfs_mount, NULL, NULL},
155 { "lxc.rootfs.options", set_config_rootfs_options, NULL, NULL},
156 { "lxc.rootfs.backend", set_config_rootfs_backend, NULL, NULL},
157 { "lxc.rootfs", set_config_rootfs, NULL, NULL},
158 { "lxc.pivotdir", set_config_pivotdir, NULL, NULL},
159 { "lxc.utsname", set_config_utsname, NULL, NULL},
160 { "lxc.hook.pre-start", set_config_hook, NULL, NULL},
161 { "lxc.hook.pre-mount", set_config_hook, NULL, NULL},
162 { "lxc.hook.mount", set_config_hook, NULL, NULL},
163 { "lxc.hook.autodev", set_config_hook, NULL, NULL},
164 { "lxc.hook.start", set_config_hook, NULL, NULL},
165 { "lxc.hook.stop", set_config_hook, NULL, NULL},
166 { "lxc.hook.post-stop", set_config_hook, NULL, NULL},
167 { "lxc.hook.clone", set_config_hook, NULL, NULL},
168 { "lxc.hook.destroy", set_config_hook, NULL, NULL},
169 { "lxc.hook", set_config_hook, NULL, NULL},
170 { "lxc.network.type", set_config_network_type, NULL, NULL},
171 { "lxc.network.flags", set_config_network_flags, NULL, NULL},
172 { "lxc.network.link", set_config_network_link, NULL, NULL},
173 { "lxc.network.name", set_config_network_name, NULL, NULL},
174 { "lxc.network.macvlan.mode", set_config_network_macvlan_mode, NULL, NULL},
175 { "lxc.network.veth.pair", set_config_network_veth_pair, NULL, NULL},
176 { "lxc.network.script.up", set_config_network_script_up, NULL, NULL},
177 { "lxc.network.script.down", set_config_network_script_down, NULL, NULL},
178 { "lxc.network.hwaddr", set_config_network_hwaddr, NULL, NULL},
179 { "lxc.network.mtu", set_config_network_mtu, NULL, NULL},
180 { "lxc.network.vlan.id", set_config_network_vlan_id, NULL, NULL},
181 { "lxc.network.ipv4.gateway", set_config_network_ipv4_gateway, NULL, NULL},
182 { "lxc.network.ipv4", set_config_network_ipv4, NULL, NULL},
183 { "lxc.network.ipv6.gateway", set_config_network_ipv6_gateway, NULL, NULL},
184 { "lxc.network.ipv6", set_config_network_ipv6, NULL, NULL},
185 { "lxc.network.", set_config_network_nic, NULL, NULL},
186 { "lxc.network", set_config_network, NULL, NULL},
187 { "lxc.cap.drop", set_config_cap_drop, NULL, NULL},
188 { "lxc.cap.keep", set_config_cap_keep, NULL, NULL},
189 { "lxc.console.logfile", set_config_console_logfile, NULL, NULL},
190 { "lxc.console", set_config_console, NULL, NULL},
191 { "lxc.seccomp", set_config_seccomp, NULL, NULL},
192 { "lxc.include", set_config_includefile, NULL, NULL},
193 { "lxc.autodev", set_config_autodev, NULL, NULL},
194 { "lxc.haltsignal", set_config_haltsignal, NULL, NULL},
195 { "lxc.rebootsignal", set_config_rebootsignal, NULL, NULL},
196 { "lxc.stopsignal", set_config_stopsignal, NULL, NULL},
197 { "lxc.start.auto", set_config_start, NULL, NULL},
198 { "lxc.start.delay", set_config_start, NULL, NULL},
199 { "lxc.start.order", set_config_start, NULL, NULL},
200 { "lxc.monitor.unshare", set_config_monitor, NULL, NULL},
201 { "lxc.group", set_config_group, NULL, NULL},
202 { "lxc.environment", set_config_environment, NULL, NULL},
203 { "lxc.init_cmd", set_config_init_cmd, NULL, NULL},
204 { "lxc.init_uid", set_config_init_uid, NULL, NULL},
205 { "lxc.init_gid", set_config_init_gid, NULL, NULL},
206 { "lxc.ephemeral", set_config_ephemeral, NULL, NULL},
207 { "lxc.syslog", set_config_syslog, NULL, NULL},
208 { "lxc.no_new_privs", set_config_no_new_privs, NULL, NULL},
209 { "lxc.limit", set_config_limit, NULL, NULL},
a84b9932
AV		 210};
211
212struct signame {
213 int num;
74a3920a 214 const char *name;
a84b9932
AV		 215};
216
74a3920a 217static const struct signame signames[] = {
a84b9932
AV		 218 { SIGHUP, "HUP" },
219 { SIGINT, "INT" },
220 { SIGQUIT, "QUIT" },
221 { SIGILL, "ILL" },
222 { SIGABRT, "ABRT" },
223 { SIGFPE, "FPE" },
224 { SIGKILL, "KILL" },
225 { SIGSEGV, "SEGV" },
226 { SIGPIPE, "PIPE" },
227 { SIGALRM, "ALRM" },
228 { SIGTERM, "TERM" },
229 { SIGUSR1, "USR1" },
230 { SIGUSR2, "USR2" },
231 { SIGCHLD, "CHLD" },
232 { SIGCONT, "CONT" },
233 { SIGSTOP, "STOP" },
234 { SIGTSTP, "TSTP" },
235 { SIGTTIN, "TTIN" },
236 { SIGTTOU, "TTOU" },
89dfc302
SY		 237#ifdef SIGTRAP
238 { SIGTRAP, "TRAP" },
239#endif
240#ifdef SIGIOT
241 { SIGIOT, "IOT" },
242#endif
243#ifdef SIGEMT
244 { SIGEMT, "EMT" },
245#endif
246#ifdef SIGBUS
247 { SIGBUS, "BUS" },
248#endif
249#ifdef SIGSTKFLT
250 { SIGSTKFLT, "STKFLT" },
251#endif
252#ifdef SIGCLD
253 { SIGCLD, "CLD" },
254#endif
255#ifdef SIGURG
256 { SIGURG, "URG" },
257#endif
258#ifdef SIGXCPU
259 { SIGXCPU, "XCPU" },
260#endif
261#ifdef SIGXFSZ
262 { SIGXFSZ, "XFSZ" },
263#endif
264#ifdef SIGVTALRM
265 { SIGVTALRM, "VTALRM" },
266#endif
267#ifdef SIGPROF
268 { SIGPROF, "PROF" },
269#endif
270#ifdef SIGWINCH
271 { SIGWINCH, "WINCH" },
272#endif
273#ifdef SIGIO
274 { SIGIO, "IO" },
275#endif
276#ifdef SIGPOLL
277 { SIGPOLL, "POLL" },
278#endif
279#ifdef SIGINFO
280 { SIGINFO, "INFO" },
281#endif
282#ifdef SIGLOST
283 { SIGLOST, "LOST" },
284#endif
285#ifdef SIGPWR
286 { SIGPWR, "PWR" },
287#endif
288#ifdef SIGUNUSED
289 { SIGUNUSED, "UNUSED" },
290#endif
291#ifdef SIGSYS
292 { SIGSYS, "SYS" },
293#endif
c2cc9f0a 294};
295
72d0e1cb 296static const size_t config_size = sizeof(config)/sizeof(struct lxc_config_t);
c2cc9f0a 297
72d0e1cb 298extern struct lxc_config_t *lxc_getconfig(const char *key)
c2cc9f0a 299{
84760c11 300 size_t i;
c2cc9f0a 301
302 for (i = 0; i < config_size; i++)
a871ff6b 303 if (!strncmp(config[i].name, key,
c2cc9f0a 304 strlen(config[i].name)))
305 return &config[i];
306 return NULL;
307}
308
72d0e1cb
SG		 309#define strprint(str, inlen, ...) \
310 do { \
311 len = snprintf(str, inlen, ##__VA_ARGS__); \
312 if (len < 0) { SYSERROR("snprintf"); return -1; }; \
313 fulllen += len; \
314 if (inlen > 0) { \
315 if (str) str += len; \
316 inlen -= len; \
317 if (inlen < 0) inlen = 0; \
318 } \
319 } while (0);
320
321int lxc_listconfigs(char *retv, int inlen)
322{
84760c11 323 size_t i;
324 int fulllen = 0, len;
72d0e1cb
SG		 325
326 if (!retv)
327 inlen = 0;
328 else
329 memset(retv, 0, inlen);
330 for (i = 0; i < config_size; i++) {
331 char *s = config[i].name;
332 if (s[strlen(s)-1] == '.')
333 continue;
334 strprint(retv, inlen, "%s\n", s);
335 }
336 return fulllen;
337}
338
fe8d7be7
CB		 339static inline bool config_value_empty(const char *value)
340{
341 if (value && strlen(value) > 0)
342 return false;
343
344 return true;
345}
346
713046e3 347static int set_config_string_item(char **conf_item, const char *value)
6d03d92a
DE		 348{
349 char *new_value;
350
e70b9db5 351 if (config_value_empty(value)) {
f10fad2f 352 free(*conf_item);
d6eca240 353 *conf_item = NULL;
6d03d92a 354 return 0;
d6eca240 355 }
6d03d92a
DE		 356
357 new_value = strdup(value);
358 if (!new_value) {
e70b9db5 359 SYSERROR("failed to duplicate string \"%s\"", value);
6d03d92a
DE		 360 return -1;
361 }
362
f10fad2f 363 free(*conf_item);
6d03d92a
DE		 364 *conf_item = new_value;
365 return 0;
366}
367
713046e3 368static int set_config_string_item_max(char **conf_item, const char *value,
6d03d92a
DE		 369 size_t max)
370{
371 if (strlen(value) >= max) {
a5a82508 372 ERROR("%s is too long (>= %lu)", value, (unsigned long)max);
6d03d92a
DE		 373 return -1;
374 }
375
713046e3 376 return set_config_string_item(conf_item, value);
6d03d92a
DE		 377}
378
713046e3 379static int set_config_path_item(char **conf_item, const char *value)
6d03d92a 380{
713046e3 381 return set_config_string_item_max(conf_item, value, PATH_MAX);
6d03d92a
DE		 382}
383
72d0e1cb
SG		 384/*
385 * config entry is something like "lxc.network.0.ipv4"
386 * the key 'lxc.network.' was found. So we make sure next
387 * comes an integer, find the right callback (by rewriting
388 * the key), and call it.
389 */
713046e3 390static int set_config_network_nic(const char *key, const char *value,
72d0e1cb
SG		 391 struct lxc_conf *lxc_conf)
392{
393 char *copy = strdup(key), *p;
394 int ret = -1;
395 struct lxc_config_t *config;
396
397 if (!copy) {
398 SYSERROR("failed to allocate memory");
399 return -1;
400 }
401 /*
402 * ok we know that to get here we've got "lxc.network."
403 * and it isn't any of the other network entries. So
404 * after the second . should come an integer (# of defined
405 * nic) followed by a valid entry.
406 */
407 if (*(key+12) < '0' || *(key+12) > '9')
408 goto out;
46cd2845 409 p = strchr(key+12, '.');
72d0e1cb
SG		 410 if (!p)
411 goto out;
412 strcpy(copy+12, p+1);
413 config = lxc_getconfig(copy);
414 if (!config) {
415 ERROR("unknown key %s", key);
416 goto out;
417 }
d37f7cd7 418 ret = config->set(key, value, lxc_conf);
72d0e1cb
SG		 419
420out:
421 free(copy);
422 return ret;
423}
424
713046e3 425static int set_config_network(const char *key, const char *value,
61924323 426 struct lxc_conf *lxc_conf)
6b0d5538 427{
61924323 428 if (!config_value_empty(value)) {
6b0d5538
SH		 429 ERROR("lxc.network must not have a value");
430 return -1;
431 }
432
433 return lxc_clear_config_network(lxc_conf);
434}
435
261658e8
BP		 436static int macvlan_mode(int *valuep, const char *value);
437
713046e3 438static int set_config_network_type(const char *key, const char *value,
e892973e 439 struct lxc_conf *lxc_conf)
c2cc9f0a 440{
5f4535a3 441 struct lxc_list *network = &lxc_conf->network;
c2cc9f0a 442 struct lxc_netdev *netdev;
443 struct lxc_list *list;
c2cc9f0a 444
d4ba45b3 445 if (config_value_empty(value))
7d0eb87e
SH		 446 return lxc_clear_config_network(lxc_conf);
447
c2cc9f0a 448 netdev = malloc(sizeof(*netdev));
449 if (!netdev) {
36eb9bde 450 SYSERROR("failed to allocate memory");
c2cc9f0a 451 return -1;
452 }
453
82d5ae15 454 memset(netdev, 0, sizeof(*netdev));
c2cc9f0a 455 lxc_list_init(&netdev->ipv4);
456 lxc_list_init(&netdev->ipv6);
c2cc9f0a 457
458 list = malloc(sizeof(*list));
459 if (!list) {
36eb9bde 460 SYSERROR("failed to allocate memory");
022de5f3 461 free(netdev);
c2cc9f0a 462 return -1;
463 }
464
465 lxc_list_init(list);
5f4535a3 466 list->elem = netdev;
c2cc9f0a 467
bac89583 468 lxc_list_add_tail(network, list);
a871ff6b 469
c2cc9f0a 470 if (!strcmp(value, "veth"))
24654103 471 netdev->type = LXC_NET_VETH;
261658e8 472 else if (!strcmp(value, "macvlan")) {
24654103 473 netdev->type = LXC_NET_MACVLAN;
261658e8
BP		 474 macvlan_mode(&netdev->priv.macvlan_attr.mode, "private");
475 }
26c39028 476 else if (!strcmp(value, "vlan"))
24654103 477 netdev->type = LXC_NET_VLAN;
c2cc9f0a 478 else if (!strcmp(value, "phys"))
24654103 479 netdev->type = LXC_NET_PHYS;
5f58350a 480 else if (!strcmp(value, "empty"))
24654103 481 netdev->type = LXC_NET_EMPTY;
26b797f3
SH		 482 else if (!strcmp(value, "none"))
483 netdev->type = LXC_NET_NONE;
c2cc9f0a 484 else {
36eb9bde 485 ERROR("invalid network type %s", value);
c2cc9f0a 486 return -1;
487 }
488 return 0;
489}
490
a059591e
DL		 491static int config_ip_prefix(struct in_addr *addr)
492{
493 if (IN_CLASSA(addr->s_addr))
494 return 32 - IN_CLASSA_NSHIFT;
495 if (IN_CLASSB(addr->s_addr))
496 return 32 - IN_CLASSB_NSHIFT;
497 if (IN_CLASSC(addr->s_addr))
498 return 32 - IN_CLASSC_NSHIFT;
499
500 return 0;
501}
502
72d0e1cb
SG		 503/*
504 * if you have p="lxc.network.0.link", pass it p+12
505 * to get back '0' (the index of the nic)
506 */
507static int get_network_netdev_idx(const char *key)
508{
509 int ret, idx;
510
511 if (*key < '0' || *key > '9')
512 return -1;
513 ret = sscanf(key, "%d", &idx);
514 if (ret != 1)
515 return -1;
516 return idx;
517}
518
519/*
520 * if you have p="lxc.network.0", pass this p+12 and it will return
521 * the netdev of the first configured nic
522 */
523static struct lxc_netdev *get_netdev_from_key(const char *key,
524 struct lxc_list *network)
525{
526 int i = 0, idx = get_network_netdev_idx(key);
527 struct lxc_netdev *netdev = NULL;
528 struct lxc_list *it;
529 if (idx == -1)
530 return NULL;
531 lxc_list_for_each(it, network) {
532 if (idx == i++) {
533 netdev = it->elem;
534 break;
535 }
536 }
537 return netdev;
538}
539
12a50cc6
DE		 540extern int lxc_list_nicconfigs(struct lxc_conf *c, const char *key,
541 char *retv, int inlen)
72d0e1cb
SG		 542{
543 struct lxc_netdev *netdev;
544 int fulllen = 0, len;
545
546 netdev = get_netdev_from_key(key+12, &c->network);
547 if (!netdev)
548 return -1;
549
550 if (!retv)
551 inlen = 0;
552 else
553 memset(retv, 0, inlen);
554
74836992 555 strprint(retv, inlen, "type\n");
72d0e1cb 556 strprint(retv, inlen, "script.up\n");
8fc8295a 557 strprint(retv, inlen, "script.down\n");
72d0e1cb
SG		 558 if (netdev->type != LXC_NET_EMPTY) {
559 strprint(retv, inlen, "flags\n");
560 strprint(retv, inlen, "link\n");
561 strprint(retv, inlen, "name\n");
562 strprint(retv, inlen, "hwaddr\n");
563 strprint(retv, inlen, "mtu\n");
564 strprint(retv, inlen, "ipv6\n");
9eaf8a59 565 strprint(retv, inlen, "ipv6.gateway\n");
72d0e1cb 566 strprint(retv, inlen, "ipv4\n");
9eaf8a59 567 strprint(retv, inlen, "ipv4.gateway\n");
72d0e1cb
SG		 568 }
569 switch(netdev->type) {
570 case LXC_NET_VETH:
571 strprint(retv, inlen, "veth.pair\n");
572 break;
573 case LXC_NET_MACVLAN:
574 strprint(retv, inlen, "macvlan.mode\n");
575 break;
576 case LXC_NET_VLAN:
577 strprint(retv, inlen, "vlan.id\n");
578 break;
579 case LXC_NET_PHYS:
580 break;
581 }
582 return fulllen;
583}
584
16950ecb
DL		 585static struct lxc_netdev *network_netdev(const char *key, const char *value,
586 struct lxc_list *network)
c2cc9f0a 587{
72d0e1cb 588 struct lxc_netdev *netdev = NULL;
c2cc9f0a 589
5f4535a3 590 if (lxc_list_empty(network)) {
16950ecb
DL		 591 ERROR("network is not created for '%s' = '%s' option",
592 key, value);
33c945e0 593 return NULL;
c2cc9f0a 594 }
595
72d0e1cb
SG		 596 if (get_network_netdev_idx(key+12) == -1)
597 netdev = lxc_list_last_elem(network);
598 else
599 netdev = get_netdev_from_key(key+12, network);
600
5f4535a3 601 if (!netdev) {
16950ecb
DL		 602 ERROR("no network device defined for '%s' = '%s' option",
603 key, value);
33c945e0 604 return NULL;
c2cc9f0a 605 }
606
33c945e0 607 return netdev;
c2cc9f0a 608}
609
12a50cc6 610static int network_ifname(char **valuep, const char *value)
c2cc9f0a 611{
713046e3 612 return set_config_string_item_max(valuep, value, IFNAMSIZ);
c2cc9f0a 613}
614
e892973e
DL		 615#ifndef MACVLAN_MODE_PRIVATE
616# define MACVLAN_MODE_PRIVATE 1
617#endif
618
619#ifndef MACVLAN_MODE_VEPA
620# define MACVLAN_MODE_VEPA 2
621#endif
622
623#ifndef MACVLAN_MODE_BRIDGE
624# define MACVLAN_MODE_BRIDGE 4
625#endif
626
99854161
EL		 627#ifndef MACVLAN_MODE_PASSTHRU
628# define MACVLAN_MODE_PASSTHRU 8
629#endif
630
12a50cc6 631static int macvlan_mode(int *valuep, const char *value)
e892973e
DL		 632{
633 struct mc_mode {
634 char *name;
635 int mode;
636 } m[] = {
637 { "private", MACVLAN_MODE_PRIVATE },
638 { "vepa", MACVLAN_MODE_VEPA },
639 { "bridge", MACVLAN_MODE_BRIDGE },
99854161 640 { "passthru", MACVLAN_MODE_PASSTHRU },
e892973e
DL		 641 };
642
84760c11 643 size_t i;
e892973e
DL		 644
645 for (i = 0; i < sizeof(m)/sizeof(m[0]); i++) {
646 if (strcmp(m[i].name, value))
647 continue;
648
649 *valuep = m[i].mode;
650 return 0;
651 }
652
653 return -1;
654}
655
508c263e
SH		 656static int rand_complete_hwaddr(char *hwaddr)
657{
658 const char hex[] = "0123456789abcdef";
659 char *curs = hwaddr;
660
661#ifndef HAVE_RAND_R
662 randseed(true);
663#else
664 unsigned int seed=randseed(false);
665#endif
e6744e9b 666 while (*curs != '\0' && *curs != '\n')
508c263e
SH		 667 {
668 if ( *curs == 'x' || *curs == 'X' ) {
669 if (curs - hwaddr == 1) {
670 //ensure address is unicast
671#ifdef HAVE_RAND_R
672 *curs = hex[rand_r(&seed) & 0x0E];
673 } else {
674 *curs = hex[rand_r(&seed) & 0x0F];
675#else
676 *curs = hex[rand() & 0x0E];
677 } else {
678 *curs = hex[rand() & 0x0F];
679#endif
680 }
681 }
682 curs++;
683 }
684 return 0;
685}
686
713046e3 687static int set_config_network_flags(const char *key, const char *value,
33c945e0 688 struct lxc_conf *lxc_conf)
c2cc9f0a 689{
c2cc9f0a 690 struct lxc_netdev *netdev;
691
16950ecb 692 netdev = network_netdev(key, value, &lxc_conf->network);
33c945e0 693 if (!netdev)
c2cc9f0a 694 return -1;
c2cc9f0a 695
33c945e0 696 netdev->flags |= IFF_UP;
c2cc9f0a 697
33c945e0
MT		 698 return 0;
699}
700
576400e5 701static int set_network_link(const char *key, const char *value, struct lxc_conf *lxc_conf)
702{
703 struct lxc_netdev *netdev;
704
705 netdev = network_netdev(key, value, &lxc_conf->network);
706 if (!netdev)
707 return -1;
708
709 return network_ifname(&netdev->link, value);
710}
711
712static int create_matched_ifnames(const char *value, struct lxc_conf *lxc_conf)
713{
714 struct ifaddrs *ifaddr, *ifa;
715 const char *type_key = "lxc.network.type";
716 const char *link_key = "lxc.network.link";
717 const char *tmpvalue = "phys";
718 int n, ret = 0;
719
720 if (getifaddrs(&ifaddr) == -1) {
721 SYSERROR("Get network interfaces failed");
722 return -1;
723 }
724
725 for (ifa = ifaddr, n = 0; ifa != NULL; ifa = ifa->ifa_next, n++) {
726 if (!ifa->ifa_addr)
727 continue;
728 if (ifa->ifa_addr->sa_family != AF_PACKET)
729 continue;
730
731 if (!strncmp(value, ifa->ifa_name, strlen(value)-1)) {
713046e3 732 ret = set_config_network_type(type_key, tmpvalue, lxc_conf);
576400e5 733 if (!ret) {
734 ret = set_network_link(link_key, ifa->ifa_name, lxc_conf);
735 if (ret) {
736 ERROR("failed to create matched ifnames");
737 break;
738 }
739 } else {
740 ERROR("failed to create matched ifnames");
741 break;
742 }
743 }
744 }
745
746 freeifaddrs(ifaddr); /* free the dynamic memory */
747 ifaddr = NULL; /* prevent use after free */
091045f8 748
576400e5 749 return ret;
750}
751
713046e3 752static int set_config_network_link(const char *key, const char *value,
33c945e0
MT		 753 struct lxc_conf *lxc_conf)
754{
755 struct lxc_netdev *netdev;
576400e5 756 struct lxc_list * it;
757 int ret = 0;
33c945e0 758
16950ecb 759 netdev = network_netdev(key, value, &lxc_conf->network);
33c945e0 760 if (!netdev)
c2cc9f0a 761 return -1;
c2cc9f0a 762
576400e5 763 if (value[strlen(value) - 1] == '+' && netdev->type == LXC_NET_PHYS) {
764 //get the last network list and remove it.
765 it = lxc_conf->network.prev;
766 if (((struct lxc_netdev *)(it->elem))->type != LXC_NET_PHYS) {
767 ERROR("lxc config cannot support string pattern matching for this link type");
768 return -1;
769 }
770
771 lxc_list_del(it);
772 free(it);
773 ret = create_matched_ifnames(value, lxc_conf);
774
775 } else {
776 ret = network_ifname(&netdev->link, value);
777 }
778
779 return ret;
c2cc9f0a 780}
781
713046e3 782static int set_config_network_name(const char *key, const char *value,
33c945e0 783 struct lxc_conf *lxc_conf)
c2cc9f0a 784{
c2cc9f0a 785 struct lxc_netdev *netdev;
786
16950ecb 787 netdev = network_netdev(key, value, &lxc_conf->network);
33c945e0 788 if (!netdev)
c2cc9f0a 789 return -1;
c2cc9f0a 790
33c945e0
MT		 791 return network_ifname(&netdev->name, value);
792}
793
713046e3 794static int set_config_network_veth_pair(const char *key, const char *value,
e892973e
DL		 795 struct lxc_conf *lxc_conf)
796{
797 struct lxc_netdev *netdev;
798
799 netdev = network_netdev(key, value, &lxc_conf->network);
800 if (!netdev)
801 return -1;
802
c5316d60 803 if (netdev->type != LXC_NET_VETH) {
128d327a 804 ERROR("Invalid veth pair for a non-veth netdev");
c5316d60
SH		 805 return -1;
806 }
e892973e
DL		 807 return network_ifname(&netdev->priv.veth_attr.pair, value);
808}
809
713046e3 810static int set_config_network_macvlan_mode(const char *key, const char *value,
e892973e 811 struct lxc_conf *lxc_conf)
8634bc19
MT		 812{
813 struct lxc_netdev *netdev;
814
815 netdev = network_netdev(key, value, &lxc_conf->network);
816 if (!netdev)
817 return -1;
818
c5316d60 819 if (netdev->type != LXC_NET_MACVLAN) {
128d327a 820 ERROR("Invalid macvlan.mode for a non-macvlan netdev");
c5316d60
SH		 821 return -1;
822 }
e892973e 823 return macvlan_mode(&netdev->priv.macvlan_attr.mode, value);
8634bc19
MT		 824}
825
713046e3 826static int set_config_network_hwaddr(const char *key, const char *value,
33c945e0
MT		 827 struct lxc_conf *lxc_conf)
828{
829 struct lxc_netdev *netdev;
830
508c263e
SH		 831 char *new_value = strdup(value);
832 if (!new_value) {
833 SYSERROR("failed to strdup '%s': %m", value);
c2cc9f0a 834 return -1;
508c263e
SH		 835 }
836 rand_complete_hwaddr(new_value);
c2cc9f0a 837
508c263e
SH		 838 netdev = network_netdev(key, new_value, &lxc_conf->network);
839 if (!netdev) {
840 free(new_value);
841 return -1;
842 };
843
9763f881 844 if (config_value_empty(new_value)) {
508c263e
SH		 845 free(new_value);
846 netdev->hwaddr = NULL;
847 return 0;
848 }
849
850 netdev->hwaddr = new_value;
851 return 0;
c2cc9f0a 852}
853
713046e3 854static int set_config_network_vlan_id(const char *key, const char *value,
26c39028
JHS		 855 struct lxc_conf *lxc_conf)
856{
857 struct lxc_netdev *netdev;
858
859 netdev = network_netdev(key, value, &lxc_conf->network);
860 if (!netdev)
861 return -1;
862
c5316d60 863 if (netdev->type != LXC_NET_VLAN) {
128d327a 864 ERROR("Invalid vlan.id for a non-macvlan netdev");
c5316d60
SH		 865 return -1;
866 }
f6cc1de1 867 if (get_u16(&netdev->priv.vlan_attr.vid, value, 0))
26c39028
JHS		 868 return -1;
869
870 return 0;
871}
872
713046e3 873static int set_config_network_mtu(const char *key, const char *value,
33c945e0 874 struct lxc_conf *lxc_conf)
442cbbe6 875{
442cbbe6
TR		 876 struct lxc_netdev *netdev;
877
16950ecb 878 netdev = network_netdev(key, value, &lxc_conf->network);
33c945e0 879 if (!netdev)
442cbbe6 880 return -1;
442cbbe6 881
713046e3 882 return set_config_string_item(&netdev->mtu, value);
442cbbe6
TR		 883}
884
713046e3 885static int set_config_network_ipv4(const char *key, const char *value,
33c945e0 886 struct lxc_conf *lxc_conf)
c2cc9f0a 887{
c2cc9f0a 888 struct lxc_netdev *netdev;
33c945e0 889 struct lxc_inetdev *inetdev;
c2cc9f0a 890 struct lxc_list *list;
891 char *cursor, *slash, *addr = NULL, *bcast = NULL, *prefix = NULL;
892
c3760156 893 if (config_value_empty(value))
0797e123
CB		 894 return lxc_clear_config_item(lxc_conf, key);
895
16950ecb 896 netdev = network_netdev(key, value, &lxc_conf->network);
33c945e0 897 if (!netdev)
c2cc9f0a 898 return -1;
c2cc9f0a 899
900 inetdev = malloc(sizeof(*inetdev));
901 if (!inetdev) {
36eb9bde 902 SYSERROR("failed to allocate ipv4 address");
c2cc9f0a 903 return -1;
904 }
905 memset(inetdev, 0, sizeof(*inetdev));
906
907 list = malloc(sizeof(*list));
908 if (!list) {
36eb9bde 909 SYSERROR("failed to allocate memory");
53719062 910 free(inetdev);
c2cc9f0a 911 return -1;
912 }
913
914 lxc_list_init(list);
915 list->elem = inetdev;
916
956edc54
SG		 917 addr = strdup(value);
918 if (!addr) {
919 ERROR("no address specified");
53719062
SH		 920 free(inetdev);
921 free(list);
956edc54
SG		 922 return -1;
923 }
c2cc9f0a 924
925 cursor = strstr(addr, " ");
926 if (cursor) {
927 *cursor = '\0';
928 bcast = cursor + 1;
929 }
930
931 slash = strstr(addr, "/");
932 if (slash) {
933 *slash = '\0';
934 prefix = slash + 1;
935 }
936
c2cc9f0a 937 if (!inet_pton(AF_INET, addr, &inetdev->addr)) {
36eb9bde 938 SYSERROR("invalid ipv4 address: %s", value);
53719062 939 free(inetdev);
956edc54 940 free(addr);
53719062 941 free(list);
c2cc9f0a 942 return -1;
943 }
944
0093bb8c
DL		 945 if (bcast && !inet_pton(AF_INET, bcast, &inetdev->bcast)) {
946 SYSERROR("invalid ipv4 broadcast address: %s", value);
53719062
SH		 947 free(inetdev);
948 free(list);
956edc54 949 free(addr);
0093bb8c
DL		 950 return -1;
951 }
c2cc9f0a 952
a059591e 953 /* no prefix specified, determine it from the network class */
1c633398
CB		 954 if (prefix) {
955 if (lxc_safe_uint(prefix, &inetdev->prefix) < 0)
956 return -1;
957 } else {
958 inetdev->prefix = config_ip_prefix(&inetdev->addr);
959 }
a059591e 960
b3df193c 961 /* if no broadcast address, let compute one from the
0093bb8c
DL		 962 * prefix and address
963 */
964 if (!bcast) {
1b7d4743
DL		 965 inetdev->bcast.s_addr = inetdev->addr.s_addr;
966 inetdev->bcast.s_addr |=
967 htonl(INADDR_BROADCAST >> inetdev->prefix);
0093bb8c 968 }
c2cc9f0a 969
8538f388 970 lxc_list_add_tail(&netdev->ipv4, list);
c2cc9f0a 971
956edc54 972 free(addr);
c2cc9f0a 973 return 0;
974}
975
713046e3 976static int set_config_network_ipv4_gateway(const char *key, const char *value,
f8fee0e2
MK		 977 struct lxc_conf *lxc_conf)
978{
979 struct lxc_netdev *netdev;
f8fee0e2
MK		 980
981 netdev = network_netdev(key, value, &lxc_conf->network);
982 if (!netdev)
983 return -1;
984
e088e926 985 free(netdev->ipv4_gateway);
f8fee0e2 986
10da55e4 987 if (config_value_empty(value)) {
e088e926
SG		 988 netdev->ipv4_gateway = NULL;
989 } else if (!strcmp(value, "auto")) {
19a26f82
MK		 990 netdev->ipv4_gateway = NULL;
991 netdev->ipv4_gateway_auto = true;
992 } else {
e088e926
SG		 993 struct in_addr *gw;
994
995 gw = malloc(sizeof(*gw));
996 if (!gw) {
997 SYSERROR("failed to allocate ipv4 gateway address");
998 return -1;
999 }
1000
19a26f82
MK		 1001 if (!inet_pton(AF_INET, value, gw)) {
1002 SYSERROR("invalid ipv4 gateway address: %s", value);
53719062 1003 free(gw);
19a26f82
MK		 1004 return -1;
1005 }
1006
1007 netdev->ipv4_gateway = gw;
1008 netdev->ipv4_gateway_auto = false;
f8fee0e2
MK		 1009 }
1010
f8fee0e2
MK		 1011 return 0;
1012}
1013
713046e3 1014static int set_config_network_ipv6(const char *key, const char *value,
e892973e 1015 struct lxc_conf *lxc_conf)
c2cc9f0a 1016{
c2cc9f0a 1017 struct lxc_netdev *netdev;
1018 struct lxc_inet6dev *inet6dev;
1019 struct lxc_list *list;
12a50cc6 1020 char *slash,*valdup;
c2cc9f0a 1021 char *netmask;
1022
cae8a0f0 1023 if (config_value_empty(value))
0797e123
CB		 1024 return lxc_clear_config_item(lxc_conf, key);
1025
16950ecb 1026 netdev = network_netdev(key, value, &lxc_conf->network);
33c945e0 1027 if (!netdev)
c2cc9f0a 1028 return -1;
c2cc9f0a 1029
1030 inet6dev = malloc(sizeof(*inet6dev));
1031 if (!inet6dev) {
36eb9bde 1032 SYSERROR("failed to allocate ipv6 address");
c2cc9f0a 1033 return -1;
1034 }
1035 memset(inet6dev, 0, sizeof(*inet6dev));
1036
1037 list = malloc(sizeof(*list));
1038 if (!list) {
36eb9bde 1039 SYSERROR("failed to allocate memory");
28027320 1040 free(inet6dev);
c2cc9f0a 1041 return -1;
1042 }
1043
1044 lxc_list_init(list);
1045 list->elem = inet6dev;
1046
956edc54
SG		 1047 valdup = strdup(value);
1048 if (!valdup) {
1049 ERROR("no address specified");
28027320
SH		 1050 free(list);
1051 free(inet6dev);
956edc54
SG		 1052 return -1;
1053 }
1054
a059591e 1055 inet6dev->prefix = 64;
12a50cc6 1056 slash = strstr(valdup, "/");
c2cc9f0a 1057 if (slash) {
1058 *slash = '\0';
1059 netmask = slash + 1;
1c633398
CB		 1060 if (lxc_safe_uint(netmask, &inet6dev->prefix) < 0)
1061 return -1;
c2cc9f0a 1062 }
1063
5acccf95
SH		 1064 if (!inet_pton(AF_INET6, valdup, &inet6dev->addr)) {
1065 SYSERROR("invalid ipv6 address: %s", valdup);
28027320
SH		 1066 free(list);
1067 free(inet6dev);
956edc54 1068 free(valdup);
c2cc9f0a 1069 return -1;
1070 }
1071
8538f388 1072 lxc_list_add_tail(&netdev->ipv6, list);
c2cc9f0a 1073
956edc54 1074 free(valdup);
c2cc9f0a 1075 return 0;
1076}
1077
713046e3 1078static int set_config_network_ipv6_gateway(const char *key, const char *value,
f8fee0e2
MK		 1079 struct lxc_conf *lxc_conf)
1080{
1081 struct lxc_netdev *netdev;
f8fee0e2
MK		 1082
1083 netdev = network_netdev(key, value, &lxc_conf->network);
1084 if (!netdev)
1085 return -1;
1086
e088e926 1087 free(netdev->ipv6_gateway);
f8fee0e2 1088
114df19e 1089 if (config_value_empty(value)) {
ffe34437 1090 netdev->ipv6_gateway = NULL;
e088e926 1091 } else if (!strcmp(value, "auto")) {
19a26f82
MK		 1092 netdev->ipv6_gateway = NULL;
1093 netdev->ipv6_gateway_auto = true;
1094 } else {
8fb86a37
SH		 1095 struct in6_addr *gw;
1096
bec695f3
DE		 1097 gw = malloc(sizeof(*gw));
1098 if (!gw) {
1099 SYSERROR("failed to allocate ipv6 gateway address");
1100 return -1;
1101 }
1102
19a26f82
MK		 1103 if (!inet_pton(AF_INET6, value, gw)) {
1104 SYSERROR("invalid ipv6 gateway address: %s", value);
28027320 1105 free(gw);
19a26f82
MK		 1106 return -1;
1107 }
1108
1109 netdev->ipv6_gateway = gw;
1110 netdev->ipv6_gateway_auto = false;
f8fee0e2
MK		 1111 }
1112
f8fee0e2
MK		 1113 return 0;
1114}
1115
713046e3 1116static int set_config_network_script_up(const char *key, const char *value,
8fc8295a 1117 struct lxc_conf *lxc_conf)
e3b4c4c4
ST		 1118{
1119 struct lxc_netdev *netdev;
1120
1121 netdev = network_netdev(key, value, &lxc_conf->network);
1122 if (!netdev)
8fc8295a 1123 return -1;
e3b4c4c4 1124
713046e3 1125 return set_config_string_item(&netdev->upscript, value);
8fc8295a
DE		 1126}
1127
713046e3 1128static int set_config_network_script_down(const char *key, const char *value,
8fc8295a
DE		 1129 struct lxc_conf *lxc_conf)
1130{
1131 struct lxc_netdev *netdev;
1132
1133 netdev = network_netdev(key, value, &lxc_conf->network);
1134 if (!netdev)
1135 return -1;
1136
713046e3 1137 return set_config_string_item(&netdev->downscript, value);
e3b4c4c4
ST		 1138}
1139
26ddeedd
SH		 1140static int add_hook(struct lxc_conf *lxc_conf, int which, char *hook)
1141{
1142 struct lxc_list *hooklist;
1143
1144 hooklist = malloc(sizeof(*hooklist));
1145 if (!hooklist) {
1146 free(hook);
1147 return -1;
1148 }
1149 hooklist->elem = hook;
1150 lxc_list_add_tail(&lxc_conf->hooks[which], hooklist);
1151 return 0;
1152}
1153
713046e3 1154static int set_config_seccomp(const char *key, const char *value,
8f2c3a70
SH		 1155 struct lxc_conf *lxc_conf)
1156{
713046e3 1157 return set_config_path_item(&lxc_conf->seccomp, value);
8f2c3a70
SH		 1158}
1159
713046e3 1160static int set_config_init_cmd(const char *key, const char *value,
67c660d0
SG		 1161 struct lxc_conf *lxc_conf)
1162{
713046e3 1163 return set_config_path_item(&lxc_conf->init_cmd, value);
67c660d0
SG		 1164}
1165
713046e3 1166static int set_config_init_uid(const char *key, const char *value,
2e7cde40 1167 struct lxc_conf *lxc_conf)
72bb04e4 1168{
d1e5d636
CB		 1169 unsigned int init_uid;
1170
2e7cde40
CB		 1171 /* Set config value to default. */
1172 if (config_value_empty(value)) {
1173 lxc_conf->init_uid = 0;
fee80911 1174 return 0;
2e7cde40 1175 }
fee80911 1176
2e7cde40 1177 /* Parse new config value. */
d1e5d636
CB		 1178 if (lxc_safe_uint(value, &init_uid) < 0)
1179 return -1;
1180 lxc_conf->init_uid = init_uid;
1181
72bb04e4
PT		 1182 return 0;
1183}
1184
713046e3 1185static int set_config_init_gid(const char *key, const char *value,
2debb6e6 1186 struct lxc_conf *lxc_conf)
72bb04e4 1187{
d1e5d636
CB		 1188 unsigned int init_gid;
1189
2debb6e6
CB		 1190 /* Set config value to default. */
1191 if (config_value_empty(value)) {
1192 lxc_conf->init_gid = 0;
a757cc7d 1193 return 0;
2debb6e6 1194 }
a757cc7d 1195
2debb6e6 1196 /* Parse new config value. */
d1e5d636
CB		 1197 if (lxc_safe_uint(value, &init_gid) < 0)
1198 return -1;
1199 lxc_conf->init_gid = init_gid;
1200
72bb04e4
PT		 1201 return 0;
1202}
1203
713046e3 1204static int set_config_hook(const char *key, const char *value,
26ddeedd
SH		 1205 struct lxc_conf *lxc_conf)
1206{
7d0eb87e 1207 char *copy;
72bb04e4 1208
03d88f7c 1209 if (config_value_empty(value))
7d0eb87e
SH		 1210 return lxc_clear_hooks(lxc_conf, key);
1211
6b0d5538
SH		 1212 if (strcmp(key, "lxc.hook") == 0) {
1213 ERROR("lxc.hook cannot take a value");
1214 return -1;
1215 }
7d0eb87e 1216 copy = strdup(value);
26ddeedd
SH		 1217 if (!copy) {
1218 SYSERROR("failed to dup string '%s'", value);
1219 return -1;
1220 }
1221 if (strcmp(key, "lxc.hook.pre-start") == 0)
1222 return add_hook(lxc_conf, LXCHOOK_PRESTART, copy);
5ea6163a
SH		 1223 else if (strcmp(key, "lxc.hook.pre-mount") == 0)
1224 return add_hook(lxc_conf, LXCHOOK_PREMOUNT, copy);
f7bee6c6
MW		 1225 else if (strcmp(key, "lxc.hook.autodev") == 0)
1226 return add_hook(lxc_conf, LXCHOOK_AUTODEV, copy);
26ddeedd
SH		 1227 else if (strcmp(key, "lxc.hook.mount") == 0)
1228 return add_hook(lxc_conf, LXCHOOK_MOUNT, copy);
1229 else if (strcmp(key, "lxc.hook.start") == 0)
1230 return add_hook(lxc_conf, LXCHOOK_START, copy);
52492063
WB		 1231 else if (strcmp(key, "lxc.hook.stop") == 0)
1232 return add_hook(lxc_conf, LXCHOOK_STOP, copy);
26ddeedd
SH		 1233 else if (strcmp(key, "lxc.hook.post-stop") == 0)
1234 return add_hook(lxc_conf, LXCHOOK_POSTSTOP, copy);
148e91f5
SH		 1235 else if (strcmp(key, "lxc.hook.clone") == 0)
1236 return add_hook(lxc_conf, LXCHOOK_CLONE, copy);
37cf711b
SY		 1237 else if (strcmp(key, "lxc.hook.destroy") == 0)
1238 return add_hook(lxc_conf, LXCHOOK_DESTROY, copy);
26ddeedd
SH		 1239 SYSERROR("Unknown key: %s", key);
1240 free(copy);
1241 return -1;
1242}
1243
713046e3 1244static int set_config_personality(const char *key, const char *value,
cccc74b5
DL		 1245 struct lxc_conf *lxc_conf)
1246{
525f0002 1247 signed long personality = lxc_config_parse_arch(value);
cccc74b5 1248
525f0002
CS		 1249 if (personality >= 0)
1250 lxc_conf->personality = personality;
1251 else
1252 WARN("unsupported personality '%s'", value);
970ab589
DL		 1253
1254 return 0;
cccc74b5
DL		 1255}
1256
713046e3 1257static int set_config_pts(const char *key, const char *value,
12a50cc6 1258 struct lxc_conf *lxc_conf)
10db618d 1259{
ec200ce9
CB		 1260 /* Set config value to default. */
1261 if (config_value_empty(value)) {
1262 lxc_conf->pts = 0;
884a4580 1263 return 0;
ec200ce9 1264 }
884a4580 1265
ec200ce9 1266 /* Parse new config value. */
17919969
CB		 1267 if (lxc_safe_uint(value, &lxc_conf->pts) < 0)
1268 return -1;
10db618d 1269
1270 return 0;
1271}
1272
713046e3 1273static int set_config_start(const char *key, const char *value,
ebb80f95 1274 struct lxc_conf *lxc_conf)
ee1e7aa0 1275{
ebb80f95
CB		 1276 bool is_empty;
1277
1278 is_empty = config_value_empty(value);
1279
1280 if (strcmp(key, "lxc.start.auto") == 0) {
1281 /* Set config value to default. */
1282 if (is_empty) {
1283 lxc_conf->start_auto = 0;
1284 return 0;
1285 }
61ff8fc8 1286
ebb80f95 1287 /* Parse new config value. */
3590152f
CB		 1288 if (lxc_safe_uint(value, &lxc_conf->start_auto) < 0)
1289 return -1;
ebb80f95 1290
3590152f
CB		 1291 if (lxc_conf->start_auto > 1)
1292 return -1;
ebb80f95 1293
ee1e7aa0 1294 return 0;
ebb80f95
CB		 1295 } else if (strcmp(key, "lxc.start.delay") == 0) {
1296 /* Set config value to default. */
1297 if (is_empty) {
1298 lxc_conf->start_delay = 0;
1299 return 0;
1300 }
1301
1302 /* Parse new config value. */
1303 return lxc_safe_uint(value, &lxc_conf->start_delay);
1304 } else if (strcmp(key, "lxc.start.order") == 0) {
1305 /* Set config value to default. */
1306 if (is_empty) {
1307 lxc_conf->start_order = 0;
1308 return 0;
1309 }
1310
1311 /* Parse new config value. */
1312 return lxc_safe_int(value, &lxc_conf->start_order);
ee1e7aa0 1313 }
ebb80f95 1314
ee1e7aa0
SG		 1315 SYSERROR("Unknown key: %s", key);
1316 return -1;
1317}
1318
713046e3 1319static int set_config_monitor(const char *key, const char *value,
a8dfe4e0
WB		 1320 struct lxc_conf *lxc_conf)
1321{
4ad9cd26
CB		 1322 /* Set config value to default. */
1323 if (config_value_empty(value)) {
1324 lxc_conf->monitor_unshare = 0;
a8dfe4e0
WB		 1325 return 0;
1326 }
4ad9cd26
CB		 1327
1328 /* Parse new config value. */
1329 if (strcmp(key, "lxc.monitor.unshare") == 0)
1330 return lxc_safe_uint(value, &lxc_conf->monitor_unshare);
1331
a8dfe4e0
WB		 1332 SYSERROR("Unknown key: %s", key);
1333 return -1;
1334}
1335
713046e3 1336static int set_config_group(const char *key, const char *value,
ee1e7aa0
SG		 1337 struct lxc_conf *lxc_conf)
1338{
1339 char *groups, *groupptr, *sptr, *token;
1340 struct lxc_list *grouplist;
1341 int ret = -1;
1342
7584546d 1343 if (config_value_empty(value))
ee1e7aa0
SG		 1344 return lxc_clear_groups(lxc_conf);
1345
1346 groups = strdup(value);
1347 if (!groups) {
1348 SYSERROR("failed to dup '%s'", value);
1349 return -1;
1350 }
1351
1352 /* in case several groups are specified in a single line
1353 * split these groups in a single element for the list */
1354 for (groupptr = groups;;groupptr = NULL) {
d028235d
SG		 1355 token = strtok_r(groupptr, " \t", &sptr);
1356 if (!token) {
ee1e7aa0 1357 ret = 0;
d028235d 1358 break;
ee1e7aa0
SG		 1359 }
1360
1361 grouplist = malloc(sizeof(*grouplist));
1362 if (!grouplist) {
1363 SYSERROR("failed to allocate groups list");
1364 break;
1365 }
1366
1367 grouplist->elem = strdup(token);
1368 if (!grouplist->elem) {
1369 SYSERROR("failed to dup '%s'", token);
1370 free(grouplist);
1371 break;
1372 }
1373
1374 lxc_list_add_tail(&lxc_conf->groups, grouplist);
d028235d 1375 }
ee1e7aa0
SG		 1376
1377 free(groups);
1378
1379 return ret;
1380}
1381
713046e3 1382static int set_config_environment(const char *key, const char *value,
7c661726
MP		 1383 struct lxc_conf *lxc_conf)
1384{
1385 struct lxc_list *list_item = NULL;
1386
cdee76e3 1387 if (config_value_empty(value))
ab799c0b
SG		 1388 return lxc_clear_environment(lxc_conf);
1389
7c661726
MP		 1390 list_item = malloc(sizeof(*list_item));
1391 if (!list_item)
1392 goto freak_out;
1393
1394 list_item->elem = strdup(value);
1395
1396 if (!list_item->elem)
1397 goto freak_out;
1398
1399 lxc_list_add_tail(&lxc_conf->environment, list_item);
1400
1401 return 0;
1402
1403freak_out:
f10fad2f 1404 free(list_item);
7c661726
MP		 1405
1406 return -1;
1407}
1408
713046e3 1409static int set_config_tty(const char *key, const char *value,
12a50cc6 1410 struct lxc_conf *lxc_conf)
b0a33c1e 1411{
cb508ee8
CB		 1412 /* Set config value to default. */
1413 if (config_value_empty(value)) {
1414 lxc_conf->tty = 0;
fb12b12a 1415 return 0;
cb508ee8 1416 }
fb12b12a 1417
cb508ee8
CB		 1418 /* Parse new config value. */
1419 return lxc_safe_uint(value, &lxc_conf->tty);
b0a33c1e 1420}
1421
713046e3 1422static int set_config_ttydir(const char *key, const char *value,
7c6ef2a2
SH		 1423 struct lxc_conf *lxc_conf)
1424{
713046e3 1425 return set_config_string_item_max(&lxc_conf->ttydir, value, NAME_MAX+1);
7c6ef2a2
SH		 1426}
1427
713046e3 1428static int set_config_kmsg(const char *key, const char *value,
3d6b7fdc 1429 struct lxc_conf *lxc_conf)
7e0e1d94 1430{
3d6b7fdc
CB		 1431 /* Set config value to default. */
1432 if (config_value_empty(value)) {
1433 lxc_conf->kmsg = 0;
5767e9ba 1434 return 0;
3d6b7fdc 1435 }
5767e9ba 1436
3d6b7fdc 1437 /* Parse new config value. */
91863d36
CB		 1438 if (lxc_safe_uint(value, &lxc_conf->kmsg) < 0)
1439 return -1;
7e0e1d94 1440
91863d36
CB		 1441 if (lxc_conf->kmsg > 1)
1442 return -1;
7e0e1d94
AV		 1443
1444 return 0;
1445}
1446
713046e3 1447static int set_config_lsm_aa_profile(const char *key, const char *value,
fe4de9a6 1448 struct lxc_conf *lxc_conf)
e075f5d9 1449{
713046e3 1450 return set_config_string_item(&lxc_conf->lsm_aa_profile, value);
fe4de9a6
DE		 1451}
1452
713046e3 1453static int set_config_lsm_aa_incomplete(const char *key, const char *value,
cccfa758 1454 struct lxc_conf *lxc_conf)
7aff4f43 1455{
cccfa758
CB		 1456 /* Set config value to default. */
1457 if (config_value_empty(value)) {
1458 lxc_conf->lsm_aa_allow_incomplete = 0;
a678e9fa 1459 return 0;
cccfa758 1460 }
a678e9fa 1461
cccfa758 1462 /* Parse new config value. */
a56e2df9
CB		 1463 if (lxc_safe_uint(value, &lxc_conf->lsm_aa_allow_incomplete) < 0)
1464 return -1;
7aff4f43 1465
a56e2df9 1466 if (lxc_conf->lsm_aa_allow_incomplete > 1) {
cccfa758
CB		 1467 ERROR("Wrong value for lxc.lsm_aa_allow_incomplete. Can only "
1468 "be set to 0 or 1");
a56e2df9
CB		 1469 return -1;
1470 }
7aff4f43
SH		 1471
1472 return 0;
1473}
1474
713046e3 1475static int set_config_lsm_se_context(const char *key, const char *value,
fe4de9a6
DE		 1476 struct lxc_conf *lxc_conf)
1477{
713046e3 1478 return set_config_string_item(&lxc_conf->lsm_se_context, value);
e075f5d9 1479}
e075f5d9 1480
713046e3 1481static int set_config_logfile(const char *key, const char *value,
858377e4 1482 struct lxc_conf *c)
4a85ce2a 1483{
6d03d92a
DE		 1484 int ret;
1485
b40a606e
SH		 1486 // store these values in the lxc_conf, and then try to set for
1487 // actual current logging.
713046e3 1488 ret = set_config_path_item(&c->logfile, value);
6d03d92a 1489 if (ret == 0)
858377e4 1490 ret = lxc_log_set_file(&c->logfd, c->logfile);
6d03d92a 1491 return ret;
4a85ce2a
SH		 1492}
1493
713046e3 1494static int set_config_loglevel(const char *key, const char *value,
575b9745 1495 struct lxc_conf *lxc_conf)
4a85ce2a 1496{
9ea87d5d
SH		 1497 int newlevel;
1498
575b9745
CB		 1499 /* Set config value to default. */
1500 if (config_value_empty(value)) {
1501 lxc_conf->loglevel = LXC_LOG_PRIORITY_NOTSET;
4a85ce2a 1502 return 0;
575b9745 1503 }
4a85ce2a 1504
575b9745 1505 /* Parse new config value. */
a56e2df9
CB		 1506 if (value[0] >= '0' && value[0] <= '9') {
1507 if (lxc_safe_int(value, &newlevel) < 0)
1508 return -1;
1509 } else {
9ea87d5d 1510 newlevel = lxc_log_priority_to_int(value);
a56e2df9 1511 }
575b9745
CB		 1512
1513 /* store these values in the lxc_conf, and then try to set for actual
1514 * current logging.
1515 */
b40a606e 1516 lxc_conf->loglevel = newlevel;
858377e4 1517 return lxc_log_set_level(&lxc_conf->loglevel, newlevel);
4a85ce2a
SH		 1518}
1519
713046e3 1520static int set_config_autodev(const char *key, const char *value,
c6883f38
SH		 1521 struct lxc_conf *lxc_conf)
1522{
1045031e
CB		 1523 /* Set config value to default. */
1524 if (config_value_empty(value)) {
1525 lxc_conf->autodev = 0;
180abbc0 1526 return 0;
1045031e 1527 }
180abbc0 1528
1045031e 1529 /* Parse new config value. */
ff6cb4ed
CB		 1530 if (lxc_safe_uint(value, &lxc_conf->autodev) < 0)
1531 return -1;
c6883f38 1532
ff6cb4ed
CB		 1533 if (lxc_conf->autodev > 1) {
1534 ERROR("Wrong value for lxc.autodev. Can only be set to 0 or 1");
1535 return -1;
1536 }
c6883f38
SH		 1537
1538 return 0;
1539}
1540
a84b9932
AV		 1541static int sig_num(const char *sig)
1542{
f2e539b3 1543 unsigned int signum;
a84b9932 1544
f2e539b3 1545 if (lxc_safe_uint(sig, &signum) < 0)
a84b9932 1546 return -1;
f2e539b3
CB		 1547
1548 return signum;
a84b9932
AV		 1549}
1550
1551static int rt_sig_num(const char *signame)
1552{
1553 int sig_n = 0;
1554 int rtmax = 0;
1555
1556 if (strncasecmp(signame, "max-", 4) == 0) {
1557 rtmax = 1;
1558 }
1559 signame += 4;
1560 if (!isdigit(*signame))
1561 return -1;
1562 sig_n = sig_num(signame);
1563 sig_n = rtmax ? SIGRTMAX - sig_n : SIGRTMIN + sig_n;
1564 if (sig_n > SIGRTMAX || sig_n < SIGRTMIN)
1565 return -1;
1566 return sig_n;
1567}
1568
1569static int sig_parse(const char *signame) {
84760c11 1570 size_t n;
a84b9932
AV		 1571
1572 if (isdigit(*signame)) {
1573 return sig_num(signame);
1574 } else if (strncasecmp(signame, "sig", 3) == 0) {
1575 signame += 3;
1576 if (strncasecmp(signame, "rt", 2) == 0)
1577 return rt_sig_num(signame + 2);
1578 for (n = 0; n < sizeof(signames) / sizeof((signames)[0]); n++) {
1579 if (strcasecmp (signames[n].name, signame) == 0)
1580 return signames[n].num;
1581 }
1582 }
1583 return -1;
1584}
1585
713046e3 1586static int set_config_haltsignal(const char *key, const char *value,
f0f1d8c0
DE		 1587 struct lxc_conf *lxc_conf)
1588{
62a085fb 1589 int sig_n;
f0f1d8c0 1590
c1a64603
CB		 1591 /* Set config value to default. */
1592 if (config_value_empty(value)) {
1593 lxc_conf->haltsignal = 0;
955912f0 1594 return 0;
c1a64603 1595 }
955912f0 1596
c1a64603 1597 /* Parse new config value. */
62a085fb
CB		 1598 sig_n = sig_parse(value);
1599
f0f1d8c0
DE		 1600 if (sig_n < 0)
1601 return -1;
1602 lxc_conf->haltsignal = sig_n;
1603
1604 return 0;
1605}
1606
713046e3 1607static int set_config_rebootsignal(const char *key, const char *value,
9d7e7587 1608 struct lxc_conf *lxc_conf)
dd267776 1609{
9d7e7587 1610 int sig_n;
dd267776 1611
18fcee44
CB		 1612 /* Set config value to default. */
1613 if (config_value_empty(value)) {
1614 lxc_conf->rebootsignal = 0;
9d7e7587 1615 return 0;
18fcee44 1616 }
9d7e7587 1617
18fcee44 1618 /* Parse new config value. */
9d7e7587 1619 sig_n = sig_parse(value);
dd267776
BP		 1620 if (sig_n < 0)
1621 return -1;
1622 lxc_conf->rebootsignal = sig_n;
1623
1624 return 0;
1625}
1626
713046e3 1627static int set_config_stopsignal(const char *key, const char *value,
6ca6aedd 1628 struct lxc_conf *lxc_conf)
a84b9932 1629{
6ca6aedd 1630 int sig_n;
a84b9932 1631
4100d1a7
CB		 1632 /* Set config value to default. */
1633 if (config_value_empty(value)) {
1634 lxc_conf->stopsignal = 0;
6ca6aedd 1635 return 0;
4100d1a7 1636 }
6ca6aedd 1637
4100d1a7 1638 /* Parse new config value. */
6ca6aedd 1639 sig_n = sig_parse(value);
a84b9932
AV		 1640 if (sig_n < 0)
1641 return -1;
1642 lxc_conf->stopsignal = sig_n;
1643
1644 return 0;
1645}
1646
713046e3 1647static int set_config_cgroup(const char *key, const char *value,
12a50cc6 1648 struct lxc_conf *lxc_conf)
576f946d 1649{
1650 char *token = "lxc.cgroup.";
1651 char *subkey;
bf83c5b9
MS		 1652 struct lxc_list *cglist = NULL;
1653 struct lxc_cgroup *cgelem = NULL;
576f946d 1654
fb0752be 1655 if (config_value_empty(value))
7d0eb87e
SH		 1656 return lxc_clear_cgroups(lxc_conf, key);
1657
576f946d 1658 subkey = strstr(key, token);
1659
1660 if (!subkey)
1661 return -1;
1662
1663 if (!strlen(subkey))
1664 return -1;
1665
1666 if (strlen(subkey) == strlen(token))
1667 return -1;
a871ff6b 1668
576f946d 1669 subkey += strlen(token);
1670
1671 cglist = malloc(sizeof(*cglist));
1672 if (!cglist)
bf83c5b9 1673 goto out;
576f946d 1674
1675 cgelem = malloc(sizeof(*cgelem));
bf83c5b9
MS		 1676 if (!cgelem)
1677 goto out;
1678 memset(cgelem, 0, sizeof(*cgelem));
576f946d 1679
1680 cgelem->subsystem = strdup(subkey);
1681 cgelem->value = strdup(value);
bf83c5b9
MS		 1682
1683 if (!cgelem->subsystem || !cgelem->value)
1684 goto out;
1685
576f946d 1686 cglist->elem = cgelem;
1687
94d12f0a 1688 lxc_list_add_tail(&lxc_conf->cgroup, cglist);
576f946d 1689
1690 return 0;
bf83c5b9
MS		 1691
1692out:
f10fad2f 1693 free(cglist);
bf83c5b9
MS		 1694
1695 if (cgelem) {
f10fad2f 1696 free(cgelem->subsystem);
bf83c5b9 1697
f10fad2f 1698 free(cgelem->value);
bf83c5b9
MS		 1699
1700 free(cgelem);
1701 }
1702
1703 return -1;
576f946d 1704}
1705
c6d09e15
WB		 1706static bool parse_limit_value(const char **value, unsigned long *res) {
1707 char *endptr = NULL;
1708
1709 if (strncmp(*value, "unlimited", sizeof("unlimited")-1) == 0) {
1710 *res = RLIM_INFINITY;
1711 *value += sizeof("unlimited")-1;
1712 return true;
1713 }
1714
1715 errno = 0;
1716 *res = strtoul(*value, &endptr, 10);
1717 if (errno || !endptr)
1718 return false;
1719 *value = endptr;
1720
1721 return true;
1722}
1723
713046e3 1724static int set_config_limit(const char *key, const char *value,
c6d09e15
WB		 1725 struct lxc_conf *lxc_conf)
1726{
1727 struct lxc_list *limlist = NULL;
1728 struct lxc_limit *limelem = NULL;
1729 struct lxc_list *iter;
1730 struct rlimit limit;
1731 unsigned long limit_value;
1732
7a18f483 1733 if (config_value_empty(value))
c6d09e15
WB		 1734 return lxc_clear_limits(lxc_conf, key);
1735
1736 if (strncmp(key, "lxc.limit.", sizeof("lxc.limit.")-1) != 0)
1737 return -1;
1738
1739 key += sizeof("lxc.limit.")-1;
1740
1741 /* soft limit comes first in the value */
1742 if (!parse_limit_value(&value, &limit_value))
1743 return -1;
1744 limit.rlim_cur = limit_value;
1745
1746 /* skip spaces and a colon */
1747 while (isspace(*value))
1748 ++value;
1749 if (*value == ':')
1750 ++value;
1751 else if (*value) /* any other character is an error here */
1752 return -1;
1753 while (isspace(*value))
1754 ++value;
1755
1756 /* optional hard limit */
1757 if (*value) {
1758 if (!parse_limit_value(&value, &limit_value))
1759 return -1;
1760 limit.rlim_max = limit_value;
1761 /* check for trailing garbage */
1762 while (isspace(*value))
1763 ++value;
1764 if (*value)
1765 return -1;
1766 } else {
1767 /* a single value sets both hard and soft limit */
1768 limit.rlim_max = limit.rlim_cur;
1769 }
1770
1771 /* find existing list element */
1772 lxc_list_for_each(iter, &lxc_conf->limits) {
1773 limelem = iter->elem;
1774 if (!strcmp(key, limelem->resource)) {
1775 limelem->limit = limit;
1776 return 0;
1777 }
1778 }
1779
1780 /* allocate list element */
1781 limlist = malloc(sizeof(*limlist));
1782 if (!limlist)
1783 goto out;
2e6e3feb 1784
c6d09e15
WB		 1785 limelem = malloc(sizeof(*limelem));
1786 if (!limelem)
1787 goto out;
1788 memset(limelem, 0, sizeof(*limelem));
1789
1790 limelem->resource = strdup(key);
1791 if (!limelem->resource)
1792 goto out;
1793 limelem->limit = limit;
1794
1795 limlist->elem = limelem;
1796
1797 lxc_list_add_tail(&lxc_conf->limits, limlist);
1798
1799 return 0;
1800
1801out:
1802 free(limlist);
1803 if (limelem) {
1804 free(limelem->resource);
1805 free(limelem);
1806 }
1807 return -1;
1808}
1809
713046e3 1810static int set_config_idmap(const char *key, const char *value, struct lxc_conf *lxc_conf)
f6d3e3e4 1811{
251d0d2a 1812 unsigned long hostid, nsid, range;
f6d3e3e4 1813 char type;
34a7a4c6
CB		 1814 char *window, *slide;
1815 char *dup = NULL;
1816 struct lxc_list *idmaplist = NULL;
1817 struct id_map *idmap = NULL;
f6d3e3e4 1818
ab8d8307 1819 if (config_value_empty(value))
7d0eb87e
SH		 1820 return lxc_clear_idmaps(lxc_conf);
1821
f6d3e3e4
SH		 1822 idmaplist = malloc(sizeof(*idmaplist));
1823 if (!idmaplist)
34a7a4c6 1824 goto on_error;
f6d3e3e4
SH		 1825
1826 idmap = malloc(sizeof(*idmap));
1827 if (!idmap)
34a7a4c6 1828 goto on_error;
f6d3e3e4
SH		 1829 memset(idmap, 0, sizeof(*idmap));
1830
34a7a4c6
CB		 1831 /* Duplicate string. */
1832 dup = strdup(value);
1833 if (!dup)
1834 goto on_error;
1835
1836 /* A prototypical idmap entry would be: "0 1000 1000000 65536" */
1837
1838 /* align */
1839 slide = window = dup;
1840 /* skip whitespace */
1841 slide += strspn(slide, " \t\r");
1842 if (slide != window && *slide == '\0')
1843 goto on_error;
1844
1845 /* Validate type. */
1846 if (*slide != 'u' && *slide != 'g')
1847 goto on_error;
1848 /* Assign type. */
1849 type = *slide;
1850
1851 /* move beyond type */
1852 slide++;
1853 /* align */
1854 window = slide;
1855 /* Validate that only whitespace follows. */
1856 slide += strspn(slide, " \t\r");
1857 /* There must be whitespace. */
1858 if (slide == window)
1859 goto on_error;
1860
1861 /* Mark beginning of nsuid. */
1862 window = slide;
1863 /* Validate that non-whitespace follows. */
1864 slide += strcspn(slide, " \t\r");
1865 /* There must be non-whitespace. */
1866 if (slide == window || *slide == '\0')
1867 goto on_error;
1868 /* Mark end of nsuid. */
1869 *slide = '\0';
1870
1871 /* Parse nsuid. */
1872 if (lxc_safe_ulong(window, &nsid) < 0)
1873 goto on_error;
1874
1875 /* Move beyond \0. */
1876 slide++;
1877 /* align */
1878 window = slide;
1879 /* Validate that only whitespace follows. */
1880 slide += strspn(slide, " \t\r");
1881 /* If there was only one whitespace then we whiped it with our \0 above.
1882 * So only ensure that we're not at the end of the string.
1883 */
1884 if (*slide == '\0')
1885 goto on_error;
1886
1887 /* Mark beginning of hostid. */
1888 window = slide;
1889 /* Validate that non-whitespace follows. */
1890 slide += strcspn(slide, " \t\r");
1891 /* There must be non-whitespace. */
1892 if (slide == window || *slide == '\0')
1893 goto on_error;
1894 /* Mark end of nsuid. */
1895 *slide = '\0';
1896
1897 /* Parse hostid. */
1898 if (lxc_safe_ulong(window, &hostid) < 0)
1899 goto on_error;
1900
1901 /* Move beyond \0. */
1902 slide++;
1903 /* align */
1904 window = slide;
1905 /* Validate that only whitespace follows. */
1906 slide += strspn(slide, " \t\r");
1907 /* If there was only one whitespace then we whiped it with our \0 above.
1908 * So only ensure that we're not at the end of the string.
1909 */
1910 if (*slide == '\0')
1911 goto on_error;
1912
1913 /* Mark beginning of range. */
1914 window = slide;
1915 /* Validate that non-whitespace follows. */
1916 slide += strcspn(slide, " \t\r");
1917 /* There must be non-whitespace. */
1918 if (slide == window)
1919 goto on_error;
1920
1921 /* The range is the last valid entry we expect. So make sure that there
1922 * is not trailing garbage and if there is, error out.
1923 */
1924 if (*(slide + strspn(slide, " \t\r\n")) != '\0')
1925 goto on_error;
1926 /* Mark end of range. */
1927 *slide = '\0';
7e60c3f0 1928
34a7a4c6
CB		 1929 /* Parse range. */
1930 if (lxc_safe_ulong(window, &range) < 0)
1931 goto on_error;
1932
1933 /* Yay, we survived. */
251d0d2a 1934 INFO("read uid map: type %c nsid %lu hostid %lu range %lu", type, nsid, hostid, range);
ac7725e7 1935 if (type == 'u')
f6d3e3e4 1936 idmap->idtype = ID_TYPE_UID;
ac7725e7 1937 else if (type == 'g')
f6d3e3e4
SH		 1938 idmap->idtype = ID_TYPE_GID;
1939 else
34a7a4c6 1940 goto on_error;
7e60c3f0 1941
f6d3e3e4
SH		 1942 idmap->hostid = hostid;
1943 idmap->nsid = nsid;
1944 idmap->range = range;
7e60c3f0
SG		 1945 idmaplist->elem = idmap;
1946 lxc_list_add_tail(&lxc_conf->id_map, idmaplist);
34a7a4c6 1947 idmap = NULL;
7e60c3f0 1948
f6d3e3e4
SH		 1949 return 0;
1950
34a7a4c6 1951on_error:
f10fad2f 1952 free(idmaplist);
34a7a4c6
CB		 1953 free(idmap);
1954 free(dup);
f6d3e3e4
SH		 1955
1956 return -1;
1957}
1958
713046e3 1959static int set_config_fstab(const char *key, const char *value,
d95db067
DE		 1960 struct lxc_conf *lxc_conf)
1961{
46f3de30
CB		 1962 if (config_value_empty(value)) {
1963 lxc_clear_config_item(lxc_conf, key);
d9192f5d 1964 return -1;
46f3de30 1965 }
6f5685f0 1966
713046e3 1967 return set_config_path_item(&lxc_conf->fstab, value);
d95db067
DE		 1968}
1969
713046e3 1970static int set_config_mount_auto(const char *key, const char *value,
368bbc02
CS		 1971 struct lxc_conf *lxc_conf)
1972{
1973 char *autos, *autoptr, *sptr, *token;
b06b8511 1974 static struct { const char *token; int mask; int flag; } allowed_auto_mounts[] = {
0769b82a
CS		 1975 { "proc", LXC_AUTO_PROC_MASK, LXC_AUTO_PROC_MIXED },
1976 { "proc:mixed", LXC_AUTO_PROC_MASK, LXC_AUTO_PROC_MIXED },
1977 { "proc:rw", LXC_AUTO_PROC_MASK, LXC_AUTO_PROC_RW },
f24a52d5 1978 { "sys", LXC_AUTO_SYS_MASK, LXC_AUTO_SYS_MIXED },
0769b82a 1979 { "sys:ro", LXC_AUTO_SYS_MASK, LXC_AUTO_SYS_RO },
f24a52d5 1980 { "sys:mixed", LXC_AUTO_SYS_MASK, LXC_AUTO_SYS_MIXED },
0769b82a
CS		 1981 { "sys:rw", LXC_AUTO_SYS_MASK, LXC_AUTO_SYS_RW },
1982 { "cgroup", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_NOSPEC },
1983 { "cgroup:mixed", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_MIXED },
1984 { "cgroup:ro", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_RO },
1985 { "cgroup:rw", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_RW },
1986 { "cgroup-full", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_FULL_NOSPEC },
1987 { "cgroup-full:mixed", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_FULL_MIXED },
1988 { "cgroup-full:ro", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_FULL_RO },
1989 { "cgroup-full:rw", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_FULL_RW },
70f55bfd 1990 /* NB: For adding anything that is just a single on/off, but has
b06b8511
CS		 1991 * no options: keep mask and flag identical and just define the
1992 * enum value as an unused bit so far
1993 */
368bbc02
CS		 1994 { NULL, 0 }
1995 };
1996 int i;
1997 int ret = -1;
1998
ede57f73 1999 if (config_value_empty(value)) {
d9192f5d
SH		 2000 lxc_conf->auto_mounts = 0;
2001 return 0;
2002 }
368bbc02
CS		 2003
2004 autos = strdup(value);
2005 if (!autos) {
2006 SYSERROR("failed to dup '%s'", value);
2007 return -1;
2008 }
2009
2010 for (autoptr = autos; ; autoptr = NULL) {
d028235d
SG		 2011 token = strtok_r(autoptr, " \t", &sptr);
2012 if (!token) {
368bbc02 2013 ret = 0;
d028235d 2014 break;
368bbc02
CS		 2015 }
2016
2017 for (i = 0; allowed_auto_mounts[i].token; i++) {
2018 if (!strcmp(allowed_auto_mounts[i].token, token))
2019 break;
2020 }
2021
2022 if (!allowed_auto_mounts[i].token) {
2023 ERROR("Invalid filesystem to automount: %s", token);
2024 break;
2025 }
2026
b06b8511 2027 lxc_conf->auto_mounts &= ~allowed_auto_mounts[i].mask;
368bbc02 2028 lxc_conf->auto_mounts |= allowed_auto_mounts[i].flag;
d028235d 2029 }
368bbc02
CS		 2030
2031 free(autos);
2032
2033 return ret;
2034}
2035
713046e3 2036static int set_config_mount(const char *key, const char *value,
12a50cc6 2037 struct lxc_conf *lxc_conf)
e7938e9e 2038{
e7938e9e
MN		 2039 char *mntelem;
2040 struct lxc_list *mntlist;
2041
67cbe21a 2042 if (config_value_empty(value))
d9192f5d 2043 return lxc_clear_mount_entries(lxc_conf);
e7938e9e
MN		 2044
2045 mntlist = malloc(sizeof(*mntlist));
2046 if (!mntlist)
2047 return -1;
2048
2049 mntelem = strdup(value);
00b6be44
SH		 2050 if (!mntelem) {
2051 free(mntlist);
bf83c5b9 2052 return -1;
00b6be44 2053 }
e7938e9e
MN		 2054 mntlist->elem = mntelem;
2055
2056 lxc_list_add_tail(&lxc_conf->mount_list, mntlist);
2057
2058 return 0;
2059}
2060
713046e3 2061static int set_config_cap_keep(const char *key, const char *value,
1fb86a7c
SH		 2062 struct lxc_conf *lxc_conf)
2063{
2064 char *keepcaps, *keepptr, *sptr, *token;
2065 struct lxc_list *keeplist;
2066 int ret = -1;
2067
99feb7f1 2068 if (config_value_empty(value))
7d0eb87e 2069 return lxc_clear_config_keepcaps(lxc_conf);
1fb86a7c
SH		 2070
2071 keepcaps = strdup(value);
2072 if (!keepcaps) {
2073 SYSERROR("failed to dup '%s'", value);
2074 return -1;
2075 }
2076
2077 /* in case several capability keep is specified in a single line
2078 * split these caps in a single element for the list */
2079 for (keepptr = keepcaps;;keepptr = NULL) {
d028235d
SG		 2080 token = strtok_r(keepptr, " \t", &sptr);
2081 if (!token) {
1fb86a7c 2082 ret = 0;
d028235d 2083 break;
1fb86a7c
SH		 2084 }
2085
7035407c
DE		 2086 if (!strcmp(token, "none"))
2087 lxc_clear_config_keepcaps(lxc_conf);
2088
1fb86a7c
SH		 2089 keeplist = malloc(sizeof(*keeplist));
2090 if (!keeplist) {
2091 SYSERROR("failed to allocate keepcap list");
2092 break;
2093 }
2094
2095 keeplist->elem = strdup(token);
2096 if (!keeplist->elem) {
2097 SYSERROR("failed to dup '%s'", token);
2098 free(keeplist);
2099 break;
2100 }
2101
2102 lxc_list_add_tail(&lxc_conf->keepcaps, keeplist);
d028235d 2103 }
1fb86a7c
SH		 2104
2105 free(keepcaps);
2106
2107 return ret;
2108}
2109
713046e3 2110static int set_config_cap_drop(const char *key, const char *value,
81810dd1
DL		 2111 struct lxc_conf *lxc_conf)
2112{
d95db067 2113 char *dropcaps, *dropptr, *sptr, *token;
81810dd1
DL		 2114 struct lxc_list *droplist;
2115 int ret = -1;
2116
b2fae748 2117 if (config_value_empty(value))
7d0eb87e 2118 return lxc_clear_config_caps(lxc_conf);
81810dd1
DL		 2119
2120 dropcaps = strdup(value);
2121 if (!dropcaps) {
2122 SYSERROR("failed to dup '%s'", value);
2123 return -1;
2124 }
2125
2126 /* in case several capability drop is specified in a single line
2127 * split these caps in a single element for the list */
d95db067 2128 for (dropptr = dropcaps;;dropptr = NULL) {
d028235d
SG		 2129 token = strtok_r(dropptr, " \t", &sptr);
2130 if (!token) {
81810dd1 2131 ret = 0;
d028235d 2132 break;
81810dd1 2133 }
81810dd1
DL		 2134
2135 droplist = malloc(sizeof(*droplist));
2136 if (!droplist) {
2137 SYSERROR("failed to allocate drop list");
2138 break;
2139 }
2140
2141 droplist->elem = strdup(token);
2142 if (!droplist->elem) {
2143 SYSERROR("failed to dup '%s'", token);
2144 free(droplist);
2145 break;
2146 }
2147
2148 lxc_list_add_tail(&lxc_conf->caps, droplist);
d028235d 2149 }
81810dd1
DL		 2150
2151 free(dropcaps);
2152
2153 return ret;
2154}
2155
713046e3 2156static int set_config_console(const char *key, const char *value,
28a4b0e5
DL		 2157 struct lxc_conf *lxc_conf)
2158{
713046e3 2159 return set_config_path_item(&lxc_conf->console.path, value);
28a4b0e5
DL		 2160}
2161
713046e3 2162static int set_config_console_logfile(const char *key, const char *value,
96f15ca1
SH		 2163 struct lxc_conf *lxc_conf)
2164{
713046e3 2165 return set_config_path_item(&lxc_conf->console.log_path, value);
96f15ca1
SH		 2166}
2167
e6744e9b
SH		 2168/*
2169 * If we find a lxc.network.hwaddr in the original config file,
2170 * we expand it in the unexpanded_config, so that after a save_config
2171 * we store the hwaddr for re-use.
2172 * This is only called when reading the config file, not when executing
2173 * a lxc.include.
2174 * 'x' and 'X' are substituted in-place.
2175 */
2176static void update_hwaddr(const char *line)
2177{
2178 char *p;
2179
2180 line += lxc_char_left_gc(line, strlen(line));
2181 if (line[0] == '#')
2182 return;
2183 if (strncmp(line, "lxc.network.hwaddr", 18) != 0)
2184 return;
2185 p = strchr(line, '=');
2186 if (!p)
2187 return; // let config_network_hwaddr raise the error
2188 p++;
2189 while (isblank(*p))
2190 p++;
2191 if (!*p)
2192 return;
2193
2194 rand_complete_hwaddr(p);
2195}
2196
6b0d5538 2197int append_unexp_config_line(const char *line, struct lxc_conf *conf)
f979ac15 2198{
6b0d5538 2199 size_t len = conf->unexpanded_len, linelen = strlen(line);
f979ac15 2200
e6744e9b
SH		 2201 update_hwaddr(line);
2202
6b0d5538
SH		 2203 while (conf->unexpanded_alloced <= len + linelen + 2) {
2204 char *tmp = realloc(conf->unexpanded_config, conf->unexpanded_alloced + 1024);
2205 if (!tmp)
2206 return -1;
2207 if (!conf->unexpanded_config)
2208 *tmp = '\0';
2209 conf->unexpanded_config = tmp;
2210 conf->unexpanded_alloced += 1024;
2211 }
2212 strcat(conf->unexpanded_config, line);
2213 conf->unexpanded_len += linelen;
2214 if (line[linelen-1] != '\n') {
2215 strcat(conf->unexpanded_config, "\n");
2216 conf->unexpanded_len++;
f979ac15 2217 }
f979ac15
SH		 2218 return 0;
2219}
2220
e1daebd9
SH		 2221static int do_includedir(const char *dirp, struct lxc_conf *lxc_conf)
2222{
74f96976 2223 struct dirent *direntp;
e1daebd9
SH		 2224 DIR *dir;
2225 char path[MAXPATHLEN];
2226 int ret = -1, len;
2227
2228 dir = opendir(dirp);
2229 if (!dir) {
2230 SYSERROR("failed to open '%s'", dirp);
2231 return -1;
2232 }
2233
74f96976 2234 while ((direntp = readdir(dir))) {
e1daebd9
SH		 2235 const char *fnam;
2236 if (!direntp)
2237 break;
2238
2239 fnam = direntp->d_name;
2240 if (!strcmp(fnam, "."))
2241 continue;
2242
2243 if (!strcmp(fnam, ".."))
2244 continue;
2245
2246 len = strlen(fnam);
2247 if (len < 6 || strncmp(fnam+len-5, ".conf", 5) != 0)
2248 continue;
2249 len = snprintf(path, MAXPATHLEN, "%s/%s", dirp, fnam);
2250 if (len < 0 || len >= MAXPATHLEN) {
2251 ERROR("lxc.include filename too long under '%s'", dirp);
2252 ret = -1;
2253 goto out;
2254 }
2255
2256 ret = lxc_config_read(path, lxc_conf, true);
2257 if (ret < 0)
2258 goto out;
2259 }
2260 ret = 0;
2261
2262out:
2263 if (closedir(dir))
2264 WARN("lxc.include dir: failed to close directory");
2265
2266 return ret;
2267}
2268
713046e3 2269static int set_config_includefile(const char *key, const char *value,
355c5701 2270 struct lxc_conf *lxc_conf)
09ad6246 2271{
355c5701
CB		 2272 /* Set config value to default. */
2273 if (config_value_empty(value)) {
2274 lxc_clear_config_item(lxc_conf, key);
616422f1 2275 return 0;
355c5701 2276 }
616422f1 2277
355c5701 2278 /* Parse new config value. */
e1daebd9
SH		 2279 if (is_dir(value))
2280 return do_includedir(value, lxc_conf);
2281
6b0d5538 2282 return lxc_config_read(value, lxc_conf, true);
09ad6246
SH		 2283}
2284
713046e3 2285static int set_config_rootfs(const char *key, const char *value,
12a50cc6 2286 struct lxc_conf *lxc_conf)
c2cc9f0a 2287{
713046e3 2288 return set_config_path_item(&lxc_conf->rootfs.path, value);
c2cc9f0a 2289}
2290
713046e3 2291static int set_config_rootfs_mount(const char *key, const char *value,
12a50cc6 2292 struct lxc_conf *lxc_conf)
23b7ea69 2293{
713046e3 2294 return set_config_path_item(&lxc_conf->rootfs.mount, value);
23b7ea69
DL		 2295}
2296
713046e3 2297static int set_config_rootfs_options(const char *key, const char *value,
a17b1e65
SG		 2298 struct lxc_conf *lxc_conf)
2299{
713046e3 2300 return set_config_string_item(&lxc_conf->rootfs.options, value);
a17b1e65
SG		 2301}
2302
713046e3 2303static int set_config_rootfs_backend(const char *key, const char *value,
b8223439 2304 struct lxc_conf *lxc_conf)
bfd77214 2305{
b8223439 2306 if (config_value_empty(value)) {
6a21d4ae
SH		 2307 free(lxc_conf->rootfs.bdev_type);
2308 lxc_conf->rootfs.bdev_type = NULL;
b8223439 2309 return 0;
6a21d4ae 2310 }
b8223439 2311
bfd77214 2312 if (!is_valid_bdev_type(value)) {
327a1e78 2313 ERROR("Bad rootfs.backend: '%s'", value);
bfd77214
SH		 2314 return -1;
2315 }
2316
713046e3 2317 return set_config_string_item(&lxc_conf->rootfs.bdev_type, value);
bfd77214
SH		 2318}
2319
713046e3 2320static int set_config_pivotdir(const char *key, const char *value,
12a50cc6 2321 struct lxc_conf *lxc_conf)
bf601689 2322{
2d489f9e 2323 WARN("lxc.pivotdir is ignored. It will soon become an error.");
59bb8698 2324 return 0;
bf601689
MH		 2325}
2326
713046e3 2327static int set_config_utsname(const char *key, const char *value,
12a50cc6 2328 struct lxc_conf *lxc_conf)
c2cc9f0a 2329{
2330 struct utsname *utsname;
2331
00cd8039
CB		 2332 if (config_value_empty(value)) {
2333 lxc_clear_config_item(lxc_conf, key);
1939e73d 2334 return 0;
00cd8039 2335 }
1939e73d 2336
c2cc9f0a 2337 utsname = malloc(sizeof(*utsname));
2338 if (!utsname) {
36eb9bde 2339 SYSERROR("failed to allocate memory");
c2cc9f0a 2340 return -1;
2341 }
2342
2343 if (strlen(value) >= sizeof(utsname->nodename)) {
00cd8039 2344 ERROR("node name '%s' is too long", value);
b6f24d54 2345 free(utsname);
c2cc9f0a 2346 return -1;
2347 }
2348
2349 strcpy(utsname->nodename, value);
f10fad2f 2350 free(lxc_conf->utsname);
c2cc9f0a 2351 lxc_conf->utsname = utsname;
2352
2353 return 0;
2354}
2355
6b0d5538
SH		 2356struct parse_line_conf {
2357 struct lxc_conf *conf;
2358 bool from_include;
2359};
4184c3e1 2360
7a7ff0c6 2361static int parse_line(char *buffer, void *data)
c2cc9f0a 2362{
72d0e1cb 2363 struct lxc_config_t *config;
81192358 2364 char *line, *linep;
c2cc9f0a 2365 char *dot;
2366 char *key;
2367 char *value;
476d4cf1 2368 int ret = 0;
6b0d5538 2369 struct parse_line_conf *plc = data;
c2cc9f0a 2370
91480a0f 2371 if (lxc_is_line_empty(buffer))
c2cc9f0a 2372 return 0;
2373
81192358
DL		 2374 /* we have to dup the buffer otherwise, at the re-exec for
2375 * reboot we modified the original string on the stack by
2376 * replacing '=' by '\0' below
91480a0f 2377 */
81192358 2378 linep = line = strdup(buffer);
91480a0f
DL		 2379 if (!line) {
2380 SYSERROR("failed to allocate memory for '%s'", buffer);
81192358 2381 return -1;
91480a0f
DL		 2382 }
2383
6b0d5538
SH		 2384 if (!plc->from_include)
2385 if ((ret = append_unexp_config_line(line, plc->conf)))
2386 goto out;
2387
b2718c72 2388 line += lxc_char_left_gc(line, strlen(line));
476d4cf1 2389
4184c3e1
SH		 2390 /* ignore comments */
2391 if (line[0] == '#')
91480a0f 2392 goto out;
476d4cf1 2393
6b0d5538
SH		 2394 /* martian option - don't add it to the config itself */
2395 if (strncmp(line, "lxc.", 4))
4184c3e1 2396 goto out;
4184c3e1 2397
476d4cf1 2398 ret = -1;
c2cc9f0a 2399
b2718c72 2400 dot = strstr(line, "=");
c2cc9f0a 2401 if (!dot) {
36eb9bde 2402 ERROR("invalid configuration line: %s", line);
91480a0f 2403 goto out;
c2cc9f0a 2404 }
a871ff6b 2405
c2cc9f0a 2406 *dot = '\0';
2407 value = dot + 1;
2408
b2718c72 2409 key = line;
2410 key[lxc_char_right_gc(key, strlen(key))] = '\0';
c2cc9f0a 2411
b2718c72 2412 value += lxc_char_left_gc(value, strlen(value));
2413 value[lxc_char_right_gc(value, strlen(value))] = '\0';
c2cc9f0a 2414
bd878dee
SB		 2415 if (*value == '\'' || *value == '\"') {
2416 size_t len = strlen(value);
2417 if (len > 1 && value[len-1] == *value) {
2418 value[len-1] = '\0';
2419 value++;
2420 }
2421 }
2422
72d0e1cb 2423 config = lxc_getconfig(key);
c2cc9f0a 2424 if (!config) {
6e1d9b94 2425 ERROR("unknown key %s", key);
91480a0f 2426 goto out;
c2cc9f0a 2427 }
2428
d37f7cd7 2429 ret = config->set(key, value, plc->conf);
91480a0f
DL		 2430
2431out:
81192358 2432 free(linep);
91480a0f 2433 return ret;
c2cc9f0a 2434}
2435
74a3920a 2436static int lxc_config_readline(char *buffer, struct lxc_conf *conf)
af5b0155 2437{
6b0d5538
SH		 2438 struct parse_line_conf c;
2439
2440 c.conf = conf;
2441 c.from_include = false;
2442
2443 return parse_line(buffer, &c);
af5b0155
CLG		 2444}
2445
6b0d5538 2446int lxc_config_read(const char *file, struct lxc_conf *conf, bool from_include)
c2cc9f0a 2447{
6b0d5538
SH		 2448 struct parse_line_conf c;
2449
2450 c.conf = conf;
2451 c.from_include = from_include;
f979ac15 2452
f3ca99fd
SH		 2453 if( access(file, R_OK) == -1 ) {
2454 return -1;
2455 }
6b0d5538 2456
f7bee6c6 2457 /* Catch only the top level config file name in the structure */
76d0127f
CB		 2458 if(!conf->rcfile)
2459 conf->rcfile = strdup(file);
f979ac15 2460
6b0d5538 2461 return lxc_file_for_each_line(file, parse_line, &c);
c2cc9f0a 2462}
62e46035
CLG		 2463
2464int lxc_config_define_add(struct lxc_list *defines, char* arg)
2465{
2466 struct lxc_list *dent;
2467
2468 dent = malloc(sizeof(struct lxc_list));
2469 if (!dent)
2470 return -1;
2471
2472 dent->elem = arg;
2473 lxc_list_add_tail(defines, dent);
2474 return 0;
2475}
2476
226a18d6 2477int lxc_config_define_load(struct lxc_list *defines, struct lxc_conf *conf)
62e46035 2478{
9ebb03ad 2479 struct lxc_list *it,*next;
62e46035
CLG		 2480 int ret = 0;
2481
2482 lxc_list_for_each(it, defines) {
2483 ret = lxc_config_readline(it->elem, conf);
2484 if (ret)
2485 break;
2486 }
2487
9ebb03ad 2488 lxc_list_for_each_safe(it, defines, next) {
62e46035
CLG		 2489 lxc_list_del(it);
2490 free(it);
2491 }
2492
2493 return ret;
2494}
525f0002
CS		 2495
2496signed long lxc_config_parse_arch(const char *arch)
2497{
6ff05e18 2498 #if HAVE_SYS_PERSONALITY_H
525f0002
CS		 2499 struct per_name {
2500 char *name;
2501 unsigned long per;
bb8d8207 2502 } pername[] = {
525f0002 2503 { "x86", PER_LINUX32 },
bb8d8207
DE		 2504 { "linux32", PER_LINUX32 },
2505 { "i386", PER_LINUX32 },
2506 { "i486", PER_LINUX32 },
2507 { "i586", PER_LINUX32 },
525f0002 2508 { "i686", PER_LINUX32 },
bb8d8207 2509 { "athlon", PER_LINUX32 },
e319eb34
JC		 2510 { "mips", PER_LINUX32 },
2511 { "mipsel", PER_LINUX32 },
08245e8c
CB		 2512 { "ppc", PER_LINUX32 },
2513 { "arm", PER_LINUX32 },
2514 { "armv7l", PER_LINUX32 },
2515 { "armhf", PER_LINUX32 },
2516 { "armel", PER_LINUX32 },
2517 { "powerpc", PER_LINUX32 },
bb8d8207 2518 { "linux64", PER_LINUX },
525f0002
CS		 2519 { "x86_64", PER_LINUX },
2520 { "amd64", PER_LINUX },
e319eb34
JC		 2521 { "mips64", PER_LINUX },
2522 { "mips64el", PER_LINUX },
08245e8c
CB		 2523 { "ppc64", PER_LINUX },
2524 { "ppc64le", PER_LINUX },
2525 { "ppc64el", PER_LINUX },
2526 { "powerpc64", PER_LINUX },
2527 { "s390x", PER_LINUX },
2528 { "aarch64", PER_LINUX },
2529 { "arm64", PER_LINUX },
525f0002
CS		 2530 };
2531 size_t len = sizeof(pername) / sizeof(pername[0]);
2532
84760c11 2533 size_t i;
525f0002
CS		 2534
2535 for (i = 0; i < len; i++) {
2536 if (!strcmp(pername[i].name, arch))
2537 return pername[i].per;
2538 }
6ff05e18 2539 #endif
525f0002
CS		 2540
2541 return -1;
2542}
72d0e1cb 2543
4d69b293
NK		 2544int lxc_fill_elevated_privileges(char *flaglist, int *flags)
2545{
2546 char *token, *saveptr = NULL;
2547 int i, aflag;
2548 struct { const char *token; int flag; } all_privs[] = {
2549 { "CGROUP", LXC_ATTACH_MOVE_TO_CGROUP },
2550 { "CAP", LXC_ATTACH_DROP_CAPABILITIES },
2551 { "LSM", LXC_ATTACH_LSM_EXEC },
2552 { NULL, 0 }
2553 };
2554
2555 if (!flaglist) {
2556 /* for the sake of backward compatibility, drop all privileges
2557 if none is specified */
2558 for (i = 0; all_privs[i].token; i++) {
d028235d 2559 *flags |= all_privs[i].flag;
4d69b293
NK		 2560 }
2561 return 0;
2562 }
2563
2564 token = strtok_r(flaglist, "|", &saveptr);
2565 while (token) {
2566 aflag = -1;
2567 for (i = 0; all_privs[i].token; i++) {
2568 if (!strcmp(all_privs[i].token, token))
2569 aflag = all_privs[i].flag;
2570 }
2571 if (aflag < 0)
2572 return -1;
2573
2574 *flags |= aflag;
2575
2576 token = strtok_r(NULL, "|", &saveptr);
2577 }
2578 return 0;
2579}
2580
bdf91ab4
CB		 2581static inline int lxc_get_conf_int(struct lxc_conf *c, char *retv, int inlen,
2582 int v)
72d0e1cb
SG		 2583{
2584 if (!retv)
2585 inlen = 0;
2586 else
2587 memset(retv, 0, inlen);
bdf91ab4 2588
72d0e1cb
SG		 2589 return snprintf(retv, inlen, "%d", v);
2590}
2591
72d0e1cb
SG		 2592/*
2593 * If you ask for a specific cgroup value, i.e. lxc.cgroup.devices.list,
2594 * then just the value(s) will be printed. Since there still could be
2595 * more than one, it is newline-separated.
2596 * (Maybe that's ambigous, since some values, i.e. devices.list, will
2597 * already have newlines?)
2598 * If you ask for 'lxc.cgroup", then all cgroup entries will be printed,
2599 * in 'lxc.cgroup.subsystem.key = value' format.
2600 */
12a50cc6
DE		 2601static int lxc_get_cgroup_entry(struct lxc_conf *c, char *retv, int inlen,
2602 const char *key)
72d0e1cb
SG		 2603{
2604 int fulllen = 0, len;
2605 int all = 0;
2606 struct lxc_list *it;
2607
2608 if (!retv)
2609 inlen = 0;
2610 else
2611 memset(retv, 0, inlen);
2612
2613 if (strcmp(key, "all") == 0)
2614 all = 1;
2615
2616 lxc_list_for_each(it, &c->cgroup) {
2617 struct lxc_cgroup *cg = it->elem;
2618 if (all) {
2619 strprint(retv, inlen, "lxc.cgroup.%s = %s\n", cg->subsystem, cg->value);
2620 } else if (strcmp(cg->subsystem, key) == 0) {
2621 strprint(retv, inlen, "%s\n", cg->value);
2622 }
2623 }
2624 return fulllen;
2625}
2626
c6d09e15
WB		 2627/*
2628 * If you ask for a specific value, i.e. lxc.limit.nofile, then just the value
2629 * will be printed. If you ask for 'lxc.limit', then all limit entries will be
2630 * printed, in 'lxc.limit.resource = value' format.
2631 */
2632static int lxc_get_limit_entry(struct lxc_conf *c, char *retv, int inlen,
2633 const char *key)
2634{
2635 int fulllen = 0, len;
2636 int all = 0;
2637 struct lxc_list *it;
2638
2639 if (!retv)
2640 inlen = 0;
2641 else
2642 memset(retv, 0, inlen);
2643
2644 if (strcmp(key, "all") == 0)
2645 all = 1;
2646
2647 lxc_list_for_each(it, &c->limits) {
2648 char buf[LXC_NUMSTRLEN64*2+2]; /* 2 colon separated 64 bit integers or the word 'unlimited' */
2649 int partlen;
2650 struct lxc_limit *lim = it->elem;
2651
2652 if (lim->limit.rlim_cur == RLIM_INFINITY) {
2653 memcpy(buf, "unlimited", sizeof("unlimited"));
2654 partlen = sizeof("unlimited")-1;
2655 } else {
2e6e3feb 2656 partlen = sprintf(buf, "%"PRIu64, (uint64_t)lim->limit.rlim_cur);
c6d09e15
WB		 2657 }
2658 if (lim->limit.rlim_cur != lim->limit.rlim_max) {
2659 if (lim->limit.rlim_max == RLIM_INFINITY) {
2660 memcpy(buf+partlen, ":unlimited", sizeof(":unlimited"));
2661 } else {
2e6e3feb 2662 sprintf(buf+partlen, ":%"PRIu64, (uint64_t)lim->limit.rlim_max);
c6d09e15
WB		 2663 }
2664 }
2665
2666 if (all) {
2667 strprint(retv, inlen, "lxc.limit.%s = %s\n", lim->resource, buf);
2668 } else if (strcmp(lim->resource, key) == 0) {
2669 strprint(retv, inlen, "%s", buf);
2670 }
2671 }
2672
2673 return fulllen;
2674}
2675
12a50cc6
DE		 2676static int lxc_get_item_hooks(struct lxc_conf *c, char *retv, int inlen,
2677 const char *key)
72d0e1cb
SG		 2678{
2679 char *subkey;
2680 int len, fulllen = 0, found = -1;
2681 struct lxc_list *it;
2682 int i;
2683
2684 /* "lxc.hook.mount" */
46cd2845
PL		 2685 subkey = strchr(key, '.');
2686 if (subkey) subkey = strchr(subkey+1, '.');
72d0e1cb
SG		 2687 if (!subkey)
2688 return -1;
2689 subkey++;
2690 if (!*subkey)
2691 return -1;
2692 for (i=0; i<NUM_LXC_HOOKS; i++) {
2693 if (strcmp(lxchook_names[i], subkey) == 0) {
2694 found=i;
2695 break;
2696 }
2697 }
2698 if (found == -1)
2699 return -1;
2700
2701 if (!retv)
2702 inlen = 0;
2703 else
2704 memset(retv, 0, inlen);
2705
2706 lxc_list_for_each(it, &c->hooks[found]) {
2707 strprint(retv, inlen, "%s\n", (char *)it->elem);
2708 }
2709 return fulllen;
2710}
2711
ee1e7aa0
SG		 2712static int lxc_get_item_groups(struct lxc_conf *c, char *retv, int inlen)
2713{
2714 int len, fulllen = 0;
2715 struct lxc_list *it;
2716
2717 if (!retv)
2718 inlen = 0;
2719 else
2720 memset(retv, 0, inlen);
2721
2722 lxc_list_for_each(it, &c->groups) {
2723 strprint(retv, inlen, "%s\n", (char *)it->elem);
2724 }
2725 return fulllen;
2726}
2727
ab799c0b
SG		 2728static int lxc_get_item_environment(struct lxc_conf *c, char *retv, int inlen)
2729{
2730 int len, fulllen = 0;
2731 struct lxc_list *it;
2732
2733 if (!retv)
2734 inlen = 0;
2735 else
2736 memset(retv, 0, inlen);
2737
2738 lxc_list_for_each(it, &c->environment) {
2739 strprint(retv, inlen, "%s\n", (char *)it->elem);
2740 }
2741 return fulllen;
2742}
2743
72d0e1cb
SG		 2744static int lxc_get_item_cap_drop(struct lxc_conf *c, char *retv, int inlen)
2745{
2746 int len, fulllen = 0;
2747 struct lxc_list *it;
2748
2749 if (!retv)
2750 inlen = 0;
2751 else
2752 memset(retv, 0, inlen);
2753
2754 lxc_list_for_each(it, &c->caps) {
2755 strprint(retv, inlen, "%s\n", (char *)it->elem);
2756 }
2757 return fulllen;
2758}
2759
1fb86a7c
SH		 2760static int lxc_get_item_cap_keep(struct lxc_conf *c, char *retv, int inlen)
2761{
2762 int len, fulllen = 0;
2763 struct lxc_list *it;
2764
2765 if (!retv)
2766 inlen = 0;
2767 else
2768 memset(retv, 0, inlen);
2769
2770 lxc_list_for_each(it, &c->keepcaps) {
2771 strprint(retv, inlen, "%s\n", (char *)it->elem);
2772 }
2773 return fulllen;
2774}
2775
72d0e1cb
SG		 2776static int lxc_get_mount_entries(struct lxc_conf *c, char *retv, int inlen)
2777{
2778 int len, fulllen = 0;
2779 struct lxc_list *it;
2780
2781 if (!retv)
2782 inlen = 0;
2783 else
2784 memset(retv, 0, inlen);
2785
2786 lxc_list_for_each(it, &c->mount_list) {
2787 strprint(retv, inlen, "%s\n", (char *)it->elem);
2788 }
2789 return fulllen;
2790}
2791
b099e9e9
SH		 2792static int lxc_get_auto_mounts(struct lxc_conf *c, char *retv, int inlen)
2793{
2794 int len, fulllen = 0;
0769b82a 2795 const char *sep = "";
b099e9e9
SH		 2796
2797 if (!retv)
2798 inlen = 0;
2799 else
2800 memset(retv, 0, inlen);
2801
2802 if (!(c->auto_mounts & LXC_AUTO_ALL_MASK))
2803 return 0;
2804
2805 switch (c->auto_mounts & LXC_AUTO_PROC_MASK) {
0769b82a
CS		 2806 case LXC_AUTO_PROC_MIXED: strprint(retv, inlen, "%sproc:mixed", sep); sep = " "; break;
2807 case LXC_AUTO_PROC_RW: strprint(retv, inlen, "%sproc:rw", sep); sep = " "; break;
b099e9e9
SH		 2808 default: break;
2809 }
2810 switch (c->auto_mounts & LXC_AUTO_SYS_MASK) {
0769b82a
CS		 2811 case LXC_AUTO_SYS_RO: strprint(retv, inlen, "%ssys:ro", sep); sep = " "; break;
2812 case LXC_AUTO_SYS_RW: strprint(retv, inlen, "%ssys:rw", sep); sep = " "; break;
10f27710 2813 case LXC_AUTO_SYS_MIXED: strprint(retv, inlen, "%ssys:mixed", sep); sep = " "; break;
b099e9e9
SH		 2814 default: break;
2815 }
2816 switch (c->auto_mounts & LXC_AUTO_CGROUP_MASK) {
0769b82a
CS		 2817 case LXC_AUTO_CGROUP_NOSPEC: strprint(retv, inlen, "%scgroup", sep); sep = " "; break;
2818 case LXC_AUTO_CGROUP_MIXED: strprint(retv, inlen, "%scgroup:mixed", sep); sep = " "; break;
2819 case LXC_AUTO_CGROUP_RO: strprint(retv, inlen, "%scgroup:ro", sep); sep = " "; break;
2820 case LXC_AUTO_CGROUP_RW: strprint(retv, inlen, "%scgroup:rw", sep); sep = " "; break;
2821 case LXC_AUTO_CGROUP_FULL_NOSPEC: strprint(retv, inlen, "%scgroup-full", sep); sep = " "; break;
2822 case LXC_AUTO_CGROUP_FULL_MIXED: strprint(retv, inlen, "%scgroup-full:mixed", sep); sep = " "; break;
2823 case LXC_AUTO_CGROUP_FULL_RO: strprint(retv, inlen, "%scgroup-full:ro", sep); sep = " "; break;
2824 case LXC_AUTO_CGROUP_FULL_RW: strprint(retv, inlen, "%scgroup-full:rw", sep); sep = " "; break;
b099e9e9
SH		 2825 default: break;
2826 }
0769b82a 2827
b099e9e9
SH		 2828 return fulllen;
2829}
2830
72d0e1cb
SG		 2831/*
2832 * lxc.network.0.XXX, where XXX can be: name, type, link, flags, type,
8fc8295a 2833 * macvlan.mode, veth.pair, vlan, ipv4, ipv6, script.up, hwaddr, mtu,
9eaf8a59 2834 * ipv4.gateway, ipv6.gateway. ipvX.gateway can return 'auto' instead
72d0e1cb
SG		 2835 * of an address. ipv4 and ipv6 return lists (newline-separated).
2836 * things like veth.pair return '' if invalid (i.e. if called for vlan
2837 * type).
2838 */
12a50cc6
DE		 2839static int lxc_get_item_nic(struct lxc_conf *c, char *retv, int inlen,
2840 const char *key)
72d0e1cb
SG		 2841{
2842 char *p1;
fe88b9d2 2843 int len, fulllen = 0;
72d0e1cb
SG		 2844 struct lxc_netdev *netdev;
2845
2846 if (!retv)
2847 inlen = 0;
2848 else
2849 memset(retv, 0, inlen);
2850
46cd2845 2851 p1 = strchr(key, '.');
72d0e1cb
SG		 2852 if (!p1 || *(p1+1) == '\0') return -1;
2853 p1++;
2854
2855 netdev = get_netdev_from_key(key, &c->network);
2856 if (!netdev)
2857 return -1;
2858 if (strcmp(p1, "name") == 0) {
2859 if (netdev->name)
2860 strprint(retv, inlen, "%s", netdev->name);
2861 } else if (strcmp(p1, "type") == 0) {
2862 strprint(retv, inlen, "%s", lxc_net_type_to_str(netdev->type));
2863 } else if (strcmp(p1, "link") == 0) {
2864 if (netdev->link)
2865 strprint(retv, inlen, "%s", netdev->link);
2866 } else if (strcmp(p1, "flags") == 0) {
2867 if (netdev->flags & IFF_UP)
2868 strprint(retv, inlen, "up");
8fc8295a 2869 } else if (strcmp(p1, "script.up") == 0) {
72d0e1cb
SG		 2870 if (netdev->upscript)
2871 strprint(retv, inlen, "%s", netdev->upscript);
8fc8295a
DE		 2872 } else if (strcmp(p1, "script.down") == 0) {
2873 if (netdev->downscript)
2874 strprint(retv, inlen, "%s", netdev->downscript);
72d0e1cb
SG		 2875 } else if (strcmp(p1, "hwaddr") == 0) {
2876 if (netdev->hwaddr)
2877 strprint(retv, inlen, "%s", netdev->hwaddr);
2878 } else if (strcmp(p1, "mtu") == 0) {
2879 if (netdev->mtu)
2880 strprint(retv, inlen, "%s", netdev->mtu);
2881 } else if (strcmp(p1, "macvlan.mode") == 0) {
2882 if (netdev->type == LXC_NET_MACVLAN) {
2883 const char *mode;
2884 switch (netdev->priv.macvlan_attr.mode) {
2885 case MACVLAN_MODE_PRIVATE: mode = "private"; break;
2886 case MACVLAN_MODE_VEPA: mode = "vepa"; break;
2887 case MACVLAN_MODE_BRIDGE: mode = "bridge"; break;
99854161 2888 case MACVLAN_MODE_PASSTHRU: mode = "passthru"; break;
72d0e1cb
SG		 2889 default: mode = "(invalid)"; break;
2890 }
2891 strprint(retv, inlen, "%s", mode);
2892 }
2893 } else if (strcmp(p1, "veth.pair") == 0) {
11029c02
DE		 2894 if (netdev->type == LXC_NET_VETH) {
2895 strprint(retv, inlen, "%s",
2896 netdev->priv.veth_attr.pair ?
2897 netdev->priv.veth_attr.pair :
2898 netdev->priv.veth_attr.veth1);
2899 }
72d0e1cb
SG		 2900 } else if (strcmp(p1, "vlan") == 0) {
2901 if (netdev->type == LXC_NET_VLAN) {
2902 strprint(retv, inlen, "%d", netdev->priv.vlan_attr.vid);
2903 }
9eaf8a59 2904 } else if (strcmp(p1, "ipv4.gateway") == 0) {
72d0e1cb
SG		 2905 if (netdev->ipv4_gateway_auto) {
2906 strprint(retv, inlen, "auto");
2907 } else if (netdev->ipv4_gateway) {
2908 char buf[INET_ADDRSTRLEN];
2909 inet_ntop(AF_INET, netdev->ipv4_gateway, buf, sizeof(buf));
2910 strprint(retv, inlen, "%s", buf);
2911 }
2912 } else if (strcmp(p1, "ipv4") == 0) {
2913 struct lxc_list *it2;
2914 lxc_list_for_each(it2, &netdev->ipv4) {
2915 struct lxc_inetdev *i = it2->elem;
2916 char buf[INET_ADDRSTRLEN];
2917 inet_ntop(AF_INET, &i->addr, buf, sizeof(buf));
28417b5a 2918 strprint(retv, inlen, "%s/%d\n", buf, i->prefix);
72d0e1cb 2919 }
9eaf8a59 2920 } else if (strcmp(p1, "ipv6.gateway") == 0) {
72d0e1cb
SG		 2921 if (netdev->ipv6_gateway_auto) {
2922 strprint(retv, inlen, "auto");
2923 } else if (netdev->ipv6_gateway) {
6afb165d
AN		 2924 char buf[INET6_ADDRSTRLEN];
2925 inet_ntop(AF_INET6, netdev->ipv6_gateway, buf, sizeof(buf));
72d0e1cb
SG		 2926 strprint(retv, inlen, "%s", buf);
2927 }
2928 } else if (strcmp(p1, "ipv6") == 0) {
2929 struct lxc_list *it2;
2930 lxc_list_for_each(it2, &netdev->ipv6) {
6afb165d
AN		 2931 struct lxc_inet6dev *i = it2->elem;
2932 char buf[INET6_ADDRSTRLEN];
72d0e1cb 2933 inet_ntop(AF_INET6, &i->addr, buf, sizeof(buf));
28417b5a 2934 strprint(retv, inlen, "%s/%d\n", buf, i->prefix);
72d0e1cb
SG		 2935 }
2936 }
2937 return fulllen;
2938}
2939
2940static int lxc_get_item_network(struct lxc_conf *c, char *retv, int inlen)
2941{
2942 int len, fulllen = 0;
2943 struct lxc_list *it;
2944
2945 if (!retv)
2946 inlen = 0;
2947 else
2948 memset(retv, 0, inlen);
2949
2950 lxc_list_for_each(it, &c->network) {
2951 struct lxc_netdev *n = it->elem;
2952 const char *t = lxc_net_type_to_str(n->type);
2953 strprint(retv, inlen, "%s\n", t ? t : "(invalid)");
2954 }
2955 return fulllen;
2956}
2957
0df888ba
CB		 2958static int lxc_get_idmaps(struct lxc_conf *c, char *retv, int inlen)
2959{
2960 struct lxc_list *it;
2961 int len, listlen, ret;
2962 int fulllen = 0;
2963/* "u 1000 1000000 65536"
2964 *
2965 * let's render this as
2966 *
2967 * sizeof(char)
2968 * +
2969 * sizeof(" ")
2970 * +
2971 * sizeof(uint64_t)
2972 * +
2973 * sizeof(" ")
2974 * +
2975 * sizeof(uint64_t)
2976 * +
2977 * sizeof(" ")
2978 * +
2979 * sizeof(uint64_t)
2980 * +
2981 * \0
2982 */
2983#define __LXC_IDMAP_STR_BUF (3 * LXC_NUMSTRLEN64 + 3 + 1 + 1)
2984 char buf[__LXC_IDMAP_STR_BUF];
2985
2986 if (!retv)
2987 inlen = 0;
2988 else
2989 memset(retv, 0, inlen);
2990
2991 listlen = lxc_list_len(&c->id_map);
2992 lxc_list_for_each(it, &c->id_map)
2993 {
2994 struct id_map *map = it->elem;
2995 ret = snprintf(buf, __LXC_IDMAP_STR_BUF, "%c %lu %lu %lu",
2996 (map->idtype == ID_TYPE_UID) ? 'u' : 'g',
2997 map->nsid, map->hostid, map->range);
2998 if (ret < 0 || ret >= __LXC_IDMAP_STR_BUF)
2999 return -1;
3000
3001 strprint(retv, inlen, "%s%s", buf, (listlen-- > 1) ? "\n" : "");
3002 }
3003 return fulllen;
3004}
3005
12a50cc6
DE		 3006int lxc_get_config_item(struct lxc_conf *c, const char *key, char *retv,
3007 int inlen)
72d0e1cb 3008{
4a85ce2a 3009 const char *v = NULL;
72d0e1cb
SG		 3010
3011 if (strcmp(key, "lxc.mount.entry") == 0)
3012 return lxc_get_mount_entries(c, retv, inlen);
b099e9e9
SH		 3013 else if (strcmp(key, "lxc.mount.auto") == 0)
3014 return lxc_get_auto_mounts(c, retv, inlen);
72d0e1cb
SG		 3015 else if (strcmp(key, "lxc.mount") == 0)
3016 v = c->fstab;
72d0e1cb 3017 else if (strcmp(key, "lxc.aa_profile") == 0)
fe4de9a6 3018 v = c->lsm_aa_profile;
7aff4f43
SH		 3019 else if (strcmp(key, "lxc.aa_allow_incomplete") == 0)
3020 return lxc_get_conf_int(c, retv, inlen, c->lsm_aa_allow_incomplete);
fe4de9a6
DE		 3021 else if (strcmp(key, "lxc.se_context") == 0)
3022 v = c->lsm_se_context;
4a85ce2a 3023 else if (strcmp(key, "lxc.logfile") == 0)
858377e4 3024 v = c->logfile;
4a85ce2a 3025 else if (strcmp(key, "lxc.loglevel") == 0)
858377e4 3026 v = lxc_log_priority_to_string(c->loglevel);
72d0e1cb
SG		 3027 else if (strcmp(key, "lxc.cgroup") == 0) // all cgroup info
3028 return lxc_get_cgroup_entry(c, retv, inlen, "all");
3029 else if (strncmp(key, "lxc.cgroup.", 11) == 0) // specific cgroup info
3030 return lxc_get_cgroup_entry(c, retv, inlen, key + 11);
3031 else if (strcmp(key, "lxc.utsname") == 0)
64fca455 3032 v = c->utsname ? c->utsname->nodename : NULL;
96f15ca1
SH		 3033 else if (strcmp(key, "lxc.console.logfile") == 0)
3034 v = c->console.log_path;
72d0e1cb
SG		 3035 else if (strcmp(key, "lxc.console") == 0)
3036 v = c->console.path;
3037 else if (strcmp(key, "lxc.rootfs.mount") == 0)
3038 v = c->rootfs.mount;
327a1e78 3039 else if (strcmp(key, "lxc.rootfs.backend") == 0)
6a21d4ae 3040 v = c->rootfs.bdev_type;
a17b1e65
SG		 3041 else if (strcmp(key, "lxc.rootfs.options") == 0)
3042 v = c->rootfs.options;
72d0e1cb
SG		 3043 else if (strcmp(key, "lxc.rootfs") == 0)
3044 v = c->rootfs.path;
72d0e1cb
SG		 3045 else if (strcmp(key, "lxc.cap.drop") == 0)
3046 return lxc_get_item_cap_drop(c, retv, inlen);
1fb86a7c
SH		 3047 else if (strcmp(key, "lxc.cap.keep") == 0)
3048 return lxc_get_item_cap_keep(c, retv, inlen);
72d0e1cb
SG		 3049 else if (strncmp(key, "lxc.hook", 8) == 0)
3050 return lxc_get_item_hooks(c, retv, inlen, key);
3051 else if (strcmp(key, "lxc.network") == 0)
3052 return lxc_get_item_network(c, retv, inlen);
3053 else if (strncmp(key, "lxc.network.", 12) == 0)
3054 return lxc_get_item_nic(c, retv, inlen, key + 12);
ee1e7aa0
SG		 3055 else if (strcmp(key, "lxc.start.auto") == 0)
3056 return lxc_get_conf_int(c, retv, inlen, c->start_auto);
3057 else if (strcmp(key, "lxc.start.delay") == 0)
3058 return lxc_get_conf_int(c, retv, inlen, c->start_delay);
3059 else if (strcmp(key, "lxc.start.order") == 0)
3060 return lxc_get_conf_int(c, retv, inlen, c->start_order);
a8dfe4e0
WB		 3061 else if (strcmp(key, "lxc.monitor.unshare") == 0)
3062 return lxc_get_conf_int(c, retv, inlen, c->monitor_unshare);
ee1e7aa0
SG		 3063 else if (strcmp(key, "lxc.group") == 0)
3064 return lxc_get_item_groups(c, retv, inlen);
58e0f57d
SH		 3065 else if (strcmp(key, "lxc.seccomp") == 0)
3066 v = c->seccomp;
ab799c0b
SG		 3067 else if (strcmp(key, "lxc.environment") == 0)
3068 return lxc_get_item_environment(c, retv, inlen);
67c660d0
SG		 3069 else if (strcmp(key, "lxc.init_cmd") == 0)
3070 v = c->init_cmd;
68d18db8
PT		 3071 else if (strcmp(key, "lxc.init_uid") == 0)
3072 return lxc_get_conf_int(c, retv, inlen, c->init_uid);
3073 else if (strcmp(key, "lxc.init_gid") == 0)
3074 return lxc_get_conf_int(c, retv, inlen, c->init_gid);
8796becf
CB		 3075 else if (strcmp(key, "lxc.ephemeral") == 0)
3076 return lxc_get_conf_int(c, retv, inlen, c->ephemeral);
76d0127f
CB		 3077 else if (strcmp(key, "lxc.syslog") == 0)
3078 v = c->syslog;
5a46f283
CB		 3079 else if (strcmp(key, "lxc.no_new_privs") == 0)
3080 return lxc_get_conf_int(c, retv, inlen, c->no_new_privs);
c6d09e15
WB		 3081 else if (strcmp(key, "lxc.limit") == 0) // all limits
3082 return lxc_get_limit_entry(c, retv, inlen, "all");
3083 else if (strncmp(key, "lxc.limit.", 10) == 0) // specific limit
3084 return lxc_get_limit_entry(c, retv, inlen, key + 10);
0df888ba
CB		 3085 else if (strcmp(key, "lxc.id_map") == 0)
3086 return lxc_get_idmaps(c, retv, inlen);
8beda89e
CB		 3087 else if (strcmp(key, "lxc.haltsignal") == 0)
3088 return lxc_get_conf_int(c, retv, inlen, c->haltsignal);
bbb8adb1
CB		 3089 else if (strcmp(key, "lxc.rebootsignal") == 0)
3090 return lxc_get_conf_int(c, retv, inlen, c->rebootsignal);
d577bad1
CB		 3091 else if (strcmp(key, "lxc.stopsignal") == 0)
3092 return lxc_get_conf_int(c, retv, inlen, c->stopsignal);
1a4c89ac
CB		 3093 else if (strcmp(key, "lxc.autodev") == 0)
3094 return lxc_get_conf_int(c, retv, inlen, c->autodev);
72d0e1cb
SG		 3095 else return -1;
3096
3097 if (!v)
3098 return 0;
3099 if (retv && inlen >= strlen(v) + 1)
3100 strncpy(retv, v, strlen(v)+1);
3101 return strlen(v);
3102}
3103
12a50cc6 3104int lxc_clear_config_item(struct lxc_conf *c, const char *key)
72d0e1cb 3105{
c7b15d1e
CB		 3106 int ret = 0;
3107
3108 if (strcmp(key, "lxc.network") == 0) {
3109 ret = lxc_clear_config_network(c);
3110
3111 } else if (strncmp(key, "lxc.network.", 12) == 0) {
3112 ret = lxc_clear_nic(c, key + 12);
3113
3114 } else if (strcmp(key, "lxc.cap.drop") == 0) {
3115 ret = lxc_clear_config_caps(c);
3116
3117 } else if (strcmp(key, "lxc.cap.keep") == 0) {
3118 ret = lxc_clear_config_keepcaps(c);
3119
3120 } else if (strncmp(key, "lxc.cgroup", 10) == 0) {
3121 ret = lxc_clear_cgroups(c, key);
3122
3123 } else if (strcmp(key, "lxc.mount.entry") == 0) {
3124 ret = lxc_clear_mount_entries(c);
3125
3126 } else if (strcmp(key, "lxc.mount.auto") == 0) {
3127 ret = lxc_clear_automounts(c);
3128
3129 } else if (strncmp(key, "lxc.hook", 8) == 0) {
3130 ret = lxc_clear_hooks(c, key);
3131
3132 } else if (strncmp(key, "lxc.group", 9) == 0) {
3133 ret = lxc_clear_groups(c);
3134
3135 } else if (strncmp(key, "lxc.environment", 15) == 0) {
3136 ret = lxc_clear_environment(c);
3137
3138 } else if (strncmp(key, "lxc.id_map", 10) == 0) {
3139 ret = lxc_clear_idmaps(c);
3140
3141 } else if (strncmp(key, "lxc.limit", 9) == 0) {
3142 ret = lxc_clear_limits(c, key);
3143
3144 } else if (strcmp(key, "lxc.utsname") == 0) {
3145 free(c->utsname);
3146 c->utsname = NULL;
3147
3148 } else if (strcmp(key, "lxc.arch") == 0) {
3149 c->personality = -1;
3150
3151 } else if (strcmp(key, "lxc.haltsignal") == 0) {
3152 c->haltsignal = 0;
3153
3154 } else if (strcmp(key, "lxc.rebootsignal") == 0) {
3155 c->rebootsignal = 0;
3156
3157 } else if (strcmp(key, "lxc.stopsignal") == 0) {
3158 c->stopsignal = 0;
3159
3160 } else if (strcmp(key, "lxc.init_cmd") == 0) {
3161 free(c->init_cmd);
3162 c->init_cmd = NULL;
3163
3164 } else if (strcmp(key, "lxc.init_uid") == 0) {
3165 c->init_uid = 0;
3166
3167 } else if (strcmp(key, "lxc.init_gid") == 0) {
3168 c->init_gid = 0;
3169
3170 } else if (strcmp(key, "lxc.ephemeral") == 0) {
3171 c->ephemeral = 0;
3172
3173 } else if (strcmp(key, "lxc.console.logfile") == 0) {
3174 free(c->console.log_path);
3175 c->console.log_path = NULL;
3176
3177 } else if (strcmp(key, "lxc.console") == 0) {
3178 free(c->console.path);
3179 c->console.path = NULL;
3180
3181 } else if (strcmp(key, "lxc.tty") == 0) {
3182 c->tty = 0;
3183
3184 } else if (strcmp(key, "lxc.devttydir") == 0) {
3185 free(c->ttydir);
3186 c->ttydir = NULL;
3187
3188 } else if (strcmp(key, "lxc.autodev") == 0) {
3189 c->autodev = 1;
3190
3191 } else if (strcmp(key, "lxc.kmsg") == 0) {
3192 c->kmsg = 0;
3193
3194 } else if (strcmp(key, "lxc.mount") == 0) {
3195 free(c->fstab);
3196 c->fstab = NULL;
3197
3198 } else if (strcmp(key, "lxc.rootfs") == 0) {
3199 free(c->rootfs.path);
3200 c->rootfs.path = NULL;
3201
3202 } else if (strcmp(key, "lxc.rootfs.mount") == 0) {
3203 free(c->rootfs.mount);
3204 c->rootfs.mount = NULL;
3205
3206 } else if (strcmp(key, "lxc.rootfs.options") == 0) {
3207 free(c->rootfs.options);
3208 c->rootfs.options = NULL;
3209
3210 } else if (strcmp(key, "lxc.rootfs.backend") == 0) {
3211 free(c->rootfs.bdev_type);
3212 c->rootfs.bdev_type = NULL;
3213
3214 } else if (strcmp(key, "lxc.aa_profile") == 0) {
3215 free(c->lsm_aa_profile);
3216 c->lsm_aa_profile = NULL;
3217
3218 } else if (strcmp(key, "lxc.aa_allow_incomplete") == 0) {
3219 c->lsm_aa_allow_incomplete = 0;
3220
3221 } else if (strcmp(key, "lxc.se_context") == 0) {
3222 free(c->lsm_se_context);
3223 c->lsm_se_context = NULL;
3224
3225 } else if (strcmp(key, "lxc.seccomp") == 0) {
3226 free(c->seccomp);
3227 c->seccomp = NULL;
3228
3229 } else if (strcmp(key, "lxc.loglevel") == 0) {
3230 c->loglevel = LXC_LOG_PRIORITY_NOTSET;
3231
3232 } else if (strcmp(key, "lxc.logfile") == 0) {
3233 free(c->logfile);
3234 c->logfile = NULL;
3235
3236 } else if (strcmp(key, "lxc.monitor.unshare") == 0) {
3237 c->monitor_unshare = 0;
3238
3239 } else if (strcmp(key, "lxc.pts") == 0) {
3240 c->pts = 0;
3241
3242 } else if (strcmp(key, "lxc.include") == 0) {
3243 lxc_clear_includes(c);
3244
3245 } else if (strcmp(key, "lxc.syslog") == 0) {
3246 free(c->syslog);
3247 c->syslog = NULL;
3248 } else {
3249 ret = -1;
3250 }
3251
3252 return ret;
72d0e1cb
SG		 3253}
3254
3255/*
3256 * writing out a confile.
3257 */
3258void write_config(FILE *fout, struct lxc_conf *c)
3259{
6b0d5538
SH		 3260 size_t len = c->unexpanded_len;
3261 int ret;
72d0e1cb 3262
6b0d5538
SH		 3263 if (!len)
3264 return;
3265 ret = fwrite(c->unexpanded_config, 1, len, fout);
3266 if (ret != len)
3267 SYSERROR("Error writing configuration file");
3268}
f979ac15 3269
6b0d5538
SH		 3270bool do_append_unexp_config_line(struct lxc_conf *conf, const char *key, const char *v)
3271{
3272 int ret;
151d2da2
CB		 3273 size_t len;
3274 char *tmp;
4184c3e1 3275
151d2da2
CB		 3276 len = strlen(key) + strlen(v) + 4;
3277 tmp = alloca(len);
3278
3279 if (config_value_empty(v))
3280 ret = snprintf(tmp, len, "%s =", key);
3281 else
3282 ret = snprintf(tmp, len, "%s = %s", key, v);
6b0d5538
SH		 3283 if (ret < 0 || ret >= len)
3284 return false;
3285
3286 /* Save the line verbatim into unexpanded_conf */
3287 if (append_unexp_config_line(tmp, conf))
3288 return false;
3289
3290 return true;
3291}
3292
3293void clear_unexp_config_line(struct lxc_conf *conf, const char *key, bool rm_subkeys)
3294{
3295 char *lstart = conf->unexpanded_config, *lend;
3296
3297 if (!conf->unexpanded_config)
3298 return;
3299 while (*lstart) {
3300 lend = strchr(lstart, '\n');
3301 char v;
3302 if (!lend)
3303 lend = lstart + strlen(lstart);
3304 else
3305 lend++;
3306 if (strncmp(lstart, key, strlen(key)) != 0) {
3307 lstart = lend;
3308 continue;
5f62730e 3309 }
6b0d5538
SH		 3310 if (!rm_subkeys) {
3311 v = lstart[strlen(key)];
3312 if (!isspace(v) && v != '=') {
3313 lstart = lend;
3314 continue;
3315 }
5f62730e 3316 }
6b0d5538
SH		 3317 conf->unexpanded_len -= (lend - lstart);
3318 if (*lend == '\0') {
3319 *lstart = '\0';
3320 return;
fd986e08 3321 }
6b0d5538 3322 memmove(lstart, lend, strlen(lend)+1);
fd986e08 3323 }
6b0d5538
SH		 3324}
3325
329b3625
CB		 3326bool clone_update_unexp_ovl_paths(struct lxc_conf *conf, const char *oldpath,
3327 const char *newpath, const char *oldname,
3328 const char *newname, const char *ovldir)
3329{
3330 const char *key = "lxc.mount.entry";
3331 int ret;
3332 char *lstart = conf->unexpanded_config;
3333 char *lend;
3334 char *p;
3335 char *q;
3336 size_t newdirlen = strlen(ovldir) + strlen(newpath) + strlen(newname) + 2;
3337 size_t olddirlen = strlen(ovldir) + strlen(oldpath) + strlen(oldname) + 2;
3338 char *olddir = alloca(olddirlen + 1);
3339 char *newdir = alloca(newdirlen + 1);
3340
3341 ret = snprintf(olddir, olddirlen + 1, "%s=%s/%s", ovldir, oldpath, oldname);
3342 if (ret < 0 || ret >= olddirlen + 1) {
3343 ERROR("Bug in %s", __func__);
3344 return false;
3345 }
3346 ret = snprintf(newdir, newdirlen + 1, "%s=%s/%s", ovldir, newpath, newname);
3347 if (ret < 0 || ret >= newdirlen + 1) {
3348 ERROR("Bug in %s", __func__);
3349 return false;
3350 }
3351 if (!conf->unexpanded_config)
3352 return true;
3353 while (*lstart) {
3354 lend = strchr(lstart, '\n');
3355 if (!lend)
3356 lend = lstart + strlen(lstart);
3357 else
3358 lend++;
3359 if (strncmp(lstart, key, strlen(key)) != 0)
3360 goto next;
3361 p = strchr(lstart + strlen(key), '=');
3362 if (!p)
3363 goto next;
3364 p++;
3365 while (isblank(*p))
3366 p++;
3367 if (p >= lend)
3368 goto next;
3369 /* Whenever an lxc.mount.entry entry is found in a line we check
3370 * if the substring " overlay" or the substring " aufs" is
3371 * present before doing any further work. We check for "
3372 * overlay" and " aufs" since both substrings need to have at
3373 * least one space before them in a valid overlay
3374 * lxc.mount.entry (/A B overlay). When the space before is
3375 * missing it is very likely that these substrings are part of a
3376 * path or something else. (Checking q >= lend ensures that we
3377 * only count matches in the current line.) */
3378 if ((!(q = strstr(p, " overlay")) || q >= lend) && (!(q = strstr(p, " aufs")) || q >= lend))
3379 goto next;
3380 if (!(q = strstr(p, olddir)) || (q >= lend))
3381 goto next;
3382
3383 /* replace the olddir with newdir */
3384 if (olddirlen >= newdirlen) {
3385 size_t diff = olddirlen - newdirlen;
3386 memcpy(q, newdir, newdirlen);
3387 if (olddirlen != newdirlen) {
3388 memmove(q + newdirlen, q + newdirlen + diff,
3389 strlen(q) - newdirlen - diff + 1);
3390 lend -= diff;
3391 conf->unexpanded_len -= diff;
3392 }
3393 } else {
3394 char *new;
3395 size_t diff = newdirlen - olddirlen;
3396 size_t oldlen = conf->unexpanded_len;
3397 size_t newlen = oldlen + diff;
3398 size_t poffset = q - conf->unexpanded_config;
3399 new = realloc(conf->unexpanded_config, newlen + 1);
3400 if (!new) {
3401 ERROR("Out of memory");
3402 return false;
3403 }
3404 conf->unexpanded_len = newlen;
3405 conf->unexpanded_alloced = newlen + 1;
3406 new[newlen - 1] = '\0';
3407 lend = new + (lend - conf->unexpanded_config);
3408 /* move over the remainder to make room for the newdir */
3409 memmove(new + poffset + newdirlen,
3410 new + poffset + olddirlen,
3411 oldlen - poffset - olddirlen + 1);
3412 conf->unexpanded_config = new;
3413 memcpy(new + poffset, newdir, newdirlen);
3414 lend += diff;
3415 }
3416next:
3417 lstart = lend;
3418 }
3419 return true;
3420}
3421
67702c21 3422bool clone_update_unexp_hooks(struct lxc_conf *conf, const char *oldpath,
d546aa0e
CB		 3423 const char *newpath, const char *oldname,
3424 const char *newname)
6b0d5538 3425{
67702c21
SH		 3426 const char *key = "lxc.hook";
3427 int ret;
3428 char *lstart = conf->unexpanded_config, *lend, *p;
3429 size_t newdirlen = strlen(newpath) + strlen(newname) + 1;
3430 size_t olddirlen = strlen(oldpath) + strlen(oldname) + 1;
3431 char *olddir = alloca(olddirlen + 1);
3432 char *newdir = alloca(newdirlen + 1);
3433
d546aa0e
CB		 3434 ret = snprintf(olddir, olddirlen + 1, "%s/%s", oldpath, oldname);
3435 if (ret < 0 || ret >= olddirlen + 1) {
67702c21
SH		 3436 ERROR("Bug in %s", __func__);
3437 return false;
3438 }
d546aa0e
CB		 3439 ret = snprintf(newdir, newdirlen + 1, "%s/%s", newpath, newname);
3440 if (ret < 0 || ret >= newdirlen + 1) {
67702c21
SH		 3441 ERROR("Bug in %s", __func__);
3442 return false;
3443 }
3444 if (!conf->unexpanded_config)
3445 return true;
3446 while (*lstart) {
3447 lend = strchr(lstart, '\n');
3448 if (!lend)
3449 lend = lstart + strlen(lstart);
3450 else
3451 lend++;
d546aa0e
CB		 3452 if (strncmp(lstart, key, strlen(key)) != 0)
3453 goto next;
3454 p = strchr(lstart + strlen(key), '=');
3455 if (!p)
3456 goto next;
67702c21
SH		 3457 p++;
3458 while (isblank(*p))
3459 p++;
d546aa0e
CB		 3460 if (p >= lend)
3461 goto next;
3462 if (strncmp(p, olddir, strlen(olddir)) != 0)
3463 goto next;
67702c21
SH		 3464 /* replace the olddir with newdir */
3465 if (olddirlen >= newdirlen) {
3466 size_t diff = olddirlen - newdirlen;
3467 memcpy(p, newdir, newdirlen);
3468 if (olddirlen != newdirlen) {
d546aa0e
CB		 3469 memmove(p + newdirlen, p + newdirlen + diff,
3470 strlen(p) - newdirlen - diff + 1);
67702c21
SH		 3471 lend -= diff;
3472 conf->unexpanded_len -= diff;
3473 }
67702c21
SH		 3474 } else {
3475 char *new;
3476 size_t diff = newdirlen - olddirlen;
3477 size_t oldlen = conf->unexpanded_len;
3478 size_t newlen = oldlen + diff;
3479 size_t poffset = p - conf->unexpanded_config;
d546aa0e 3480 new = realloc(conf->unexpanded_config, newlen + 1);
67702c21
SH		 3481 if (!new) {
3482 ERROR("Out of memory");
6b0d5538 3483 return false;
67702c21
SH		 3484 }
3485 conf->unexpanded_len = newlen;
d546aa0e
CB		 3486 conf->unexpanded_alloced = newlen + 1;
3487 new[newlen - 1] = '\0';
67702c21 3488 lend = new + (lend - conf->unexpanded_config);
d546aa0e
CB		 3489 /* move over the remainder to make room for the newdir */
3490 memmove(new + poffset + newdirlen,
3491 new + poffset + olddirlen,
3492 oldlen - poffset - olddirlen + 1);
67702c21 3493 conf->unexpanded_config = new;
d546aa0e
CB		 3494 memcpy(new + poffset, newdir, newdirlen);
3495 lend += diff;
fd986e08 3496 }
d546aa0e
CB		 3497next:
3498 lstart = lend;
fd986e08 3499 }
6b0d5538
SH		 3500 return true;
3501}
3502
3503#define DO(cmd) { \
3504 if (!(cmd)) { \
3505 ERROR("Error writing to new config"); \
3506 return false; \
3507 } \
3508}
3509
091045f8 3510static bool new_hwaddr(char *hwaddr)
67702c21 3511{
091045f8
CB		 3512 int ret;
3513
091045f8
CB		 3514 (void)randseed(true);
3515
3516 ret = snprintf(hwaddr, 18, "00:16:3e:%02x:%02x:%02x", rand() % 255,
3517 rand() % 255, rand() % 255);
3518 if (ret < 0 || ret >= 18) {
3519 SYSERROR("Failed to call snprintf().");
3520 return false;
3521 }
3522
3523 return true;
67702c21
SH		 3524}
3525
3526/*
3527 * This is called only from clone.
3528 * We wish to update all hwaddrs in the unexpanded config file. We
3529 * can't/don't want to update any which come from lxc.includes (there
3530 * shouldn't be any).
3531 * We can't just walk the c->lxc-conf->network list because that includes
3532 * netifs from the include files. So we update the ones which we find in
3533 * the unexp config file, then find the original macaddr in the
3534 * conf->network, and update that to the same value.
3535 */
3536bool network_new_hwaddrs(struct lxc_conf *conf)
6b0d5538
SH		 3537{
3538 struct lxc_list *it;
3539
67702c21
SH		 3540 const char *key = "lxc.network.hwaddr";
3541 char *lstart = conf->unexpanded_config, *lend, *p, *p2;
6b0d5538 3542
67702c21
SH		 3543 if (!conf->unexpanded_config)
3544 return true;
091045f8 3545
67702c21
SH		 3546 while (*lstart) {
3547 char newhwaddr[18], oldhwaddr[17];
091045f8 3548
67702c21
SH		 3549 lend = strchr(lstart, '\n');
3550 if (!lend)
3551 lend = lstart + strlen(lstart);
3552 else
3553 lend++;
091045f8 3554
67702c21
SH		 3555 if (strncmp(lstart, key, strlen(key)) != 0) {
3556 lstart = lend;
3557 continue;
72d0e1cb 3558 }
091045f8 3559
67702c21
SH		 3560 p = strchr(lstart+strlen(key), '=');
3561 if (!p) {
3562 lstart = lend;
3563 continue;
72d0e1cb 3564 }
091045f8 3565
67702c21
SH		 3566 p++;
3567 while (isblank(*p))
3568 p++;
3569 if (!*p)
3570 return true;
091045f8 3571
67702c21
SH		 3572 p2 = p;
3573 while (*p2 && !isblank(*p2) && *p2 != '\n')
3574 p2++;
3575 if (p2-p != 17) {
3576 WARN("Bad hwaddr entry");
3577 lstart = lend;
3578 continue;
72d0e1cb 3579 }
091045f8 3580
67702c21 3581 memcpy(oldhwaddr, p, 17);
091045f8
CB		 3582
3583 if (!new_hwaddr(newhwaddr))
3584 return false;
3585
67702c21
SH		 3586 memcpy(p, newhwaddr, 17);
3587 lxc_list_for_each(it, &conf->network) {
3588 struct lxc_netdev *n = it->elem;
3589 if (n->hwaddr && memcmp(oldhwaddr, n->hwaddr, 17) == 0)
3590 memcpy(n->hwaddr, newhwaddr, 17);
72d0e1cb 3591 }
67702c21
SH		 3592
3593 lstart = lend;
72d0e1cb 3594 }
091045f8 3595
6b0d5538 3596 return true;
72d0e1cb 3597}
8796becf 3598
713046e3 3599static int set_config_ephemeral(const char *key, const char *value,
8796becf
CB		 3600 struct lxc_conf *lxc_conf)
3601{
3c6cf53a
CB		 3602 /* Set config value to default. */
3603 if (config_value_empty(value)) {
3604 lxc_conf->ephemeral = 0;
78304622 3605 return 0;
3c6cf53a 3606 }
78304622 3607
3c6cf53a 3608 /* Parse new config value. */
66ffdb1a
CB		 3609 if (lxc_safe_uint(value, &lxc_conf->ephemeral) < 0)
3610 return -1;
8796becf 3611
66ffdb1a 3612 if (lxc_conf->ephemeral > 1) {
8796becf
CB		 3613 ERROR("Wrong value for lxc.ephemeral. Can only be set to 0 or 1");
3614 return -1;
8796becf
CB		 3615 }
3616
3617 return 0;
3618}
3619
713046e3 3620static int set_config_syslog(const char *key, const char *value,
76d0127f 3621 struct lxc_conf *lxc_conf)
64c57ea1 3622{
76d0127f 3623 int facility;
7ca56b84 3624
ee10a69c
CB		 3625 /* Clear any previously set value. */
3626 if (lxc_conf->syslog) {
3627 free(lxc_conf->syslog);
3628 lxc_conf->syslog = NULL;
3629 }
3630
3631 /* Check if value is empty. */
7ca56b84
CB		 3632 if (config_value_empty(value))
3633 return 0;
3634
ee10a69c 3635 /* Parse value. */
76d0127f
CB		 3636 facility = lxc_syslog_priority_to_int(value);
3637 if (facility == -EINVAL) {
d47f1b43 3638 ERROR("Wrong value for lxc.syslog.");
76d0127f 3639 return -1;
64c57ea1
BD		 3640 }
3641
76d0127f 3642 lxc_log_syslog(facility);
713046e3 3643 return set_config_string_item(&lxc_conf->syslog, value);
64c57ea1 3644}
5a46f283 3645
713046e3 3646static int set_config_no_new_privs(const char *key, const char *value,
cf3f8bf6 3647 struct lxc_conf *lxc_conf)
5a46f283 3648{
e8ec7c9e 3649 unsigned int v;
5a46f283 3650
cf3f8bf6
CB		 3651 /* Set config value to default. */
3652 if (config_value_empty(value)) {
3653 lxc_conf->no_new_privs = false;
80926845 3654 return 0;
cf3f8bf6 3655 }
80926845 3656
cf3f8bf6 3657 /* Parse new config value. */
e8ec7c9e
CB		 3658 if (lxc_safe_uint(value, &v) < 0)
3659 return -1;
3660
3661 if (v > 1) {
5a46f283
CB		 3662 ERROR("Wrong value for lxc.no_new_privs. Can only be set to 0 or 1");
3663 return -1;
3664 }
e8ec7c9e 3665
5a46f283
CB		 3666 lxc_conf->no_new_privs = v ? true : false;
3667
3668 return 0;
3669}
7b992a3e
CB		 3670
3671/* Callbacks to get configuration items. */
3672static int get_config_personality(struct lxc_container *c, const char *key,
3673 char *retv, int inlen)
3674{
3675 int fulllen = 0;
3676
3677 if (!retv)
3678 inlen = 0;
3679 else
3680 memset(retv, 0, inlen);
3681
3682#if HAVE_SYS_PERSONALITY_H
3683 int len = 0;
3684
3685 switch (c->lxc_conf->personality) {
3686 case PER_LINUX32:
3687 strprint(retv, inlen, "i686");
3688 break;
3689 case PER_LINUX:
3690 strprint(retv, inlen, "x86_64");
3691 break;
3692 default:
3693 break;
3694 }
3695#endif
3696
3697 return fulllen;
3698}
bdf91ab4
CB		 3699
3700static int get_config_pts(struct lxc_container *c, const char *key, char *retv,
3701 int inlen)
3702{
3703 return lxc_get_conf_int(c->lxc_conf, retv, inlen, c->lxc_conf->pts);
3704}
5485782f
CB		 3705
3706static int get_config_tty(struct lxc_container *c, const char *key, char *retv,
3707 int inlen)
3708{
3709 return lxc_get_conf_int(c->lxc_conf, retv, inlen, c->lxc_conf->tty);
3710}
8015e018
CB		 3711
3712static inline int lxc_get_conf_str(char *retv, int inlen, char *value)
3713{
3714 if (!value)
3715 return 0;
3716 if (retv && inlen >= strlen(value) + 1)
3717 strncpy(retv, value, strlen(value) + 1);
3718
3719 return strlen(value);
3720}
3721
3722static int get_config_ttydir(struct lxc_container *c, const char *key,
3723 char *retv, int inlen)
3724{
3725 return lxc_get_conf_str(retv, inlen, c->lxc_conf->ttydir);
3726}
de1ede69
CB		 3727
3728static int get_config_kmsg(struct lxc_container *c, const char *key, char *retv,
3729 int inlen)
3730{
3731 return lxc_get_conf_int(c->lxc_conf, retv, inlen, c->lxc_conf->kmsg);
3732}
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