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confile: use lxc_safe_u/int in config_init_{u,g}id
[mirror_lxc.git] / src / lxc / confile.c
CommitLineData
c2cc9f0a 1/*
2 * lxc: linux Container library
3 *
4 * (C) Copyright IBM Corp. 2007, 2008
5 *
6 * Authors:
9afe19d6 7 * Daniel Lezcano <daniel.lezcano at free.fr>
c2cc9f0a 8 *
9 * This library is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2.1 of the License, or (at your option) any later version.
13 *
14 * This library is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
18 *
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with this library; if not, write to the Free Software
250b1eec 21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
c2cc9f0a 22 */
12a50cc6 23#define _GNU_SOURCE
c2cc9f0a 24#include <stdio.h>
25#include <stdlib.h>
26#include <string.h>
27#include <unistd.h>
28#include <errno.h>
63376d7d 29#include <fcntl.h>
a84b9932
AV		 30#include <ctype.h>
31#include <signal.h>
63376d7d 32#include <sys/stat.h>
c2cc9f0a 33#include <sys/types.h>
34#include <sys/param.h>
35#include <sys/utsname.h>
36#include <arpa/inet.h>
37#include <netinet/in.h>
38#include <net/if.h>
67702c21 39#include <time.h>
e1daebd9 40#include <dirent.h>
64c57ea1 41#include <syslog.h>
c2cc9f0a 42
d8e48992 43#include "bdev.h"
b2718c72 44#include "parse.h"
6ff05e18 45#include "config.h"
525f0002 46#include "confile.h"
26c39028 47#include "utils.h"
f2363e38
ÇO		 48#include "log.h"
49#include "conf.h"
72d0e1cb 50#include "network.h"
58e0f57d 51#include "lxcseccomp.h"
36eb9bde 52
6ff05e18
SG		 53#if HAVE_SYS_PERSONALITY_H
54#include <sys/personality.h>
55#endif
56
36eb9bde 57lxc_log_define(lxc_confile, lxc);
576f946d 58
12a50cc6
DE		 59static int config_personality(const char *, const char *, struct lxc_conf *);
60static int config_pts(const char *, const char *, struct lxc_conf *);
61static int config_tty(const char *, const char *, struct lxc_conf *);
62static int config_ttydir(const char *, const char *, struct lxc_conf *);
7e0e1d94 63static int config_kmsg(const char *, const char *, struct lxc_conf *);
fe4de9a6 64static int config_lsm_aa_profile(const char *, const char *, struct lxc_conf *);
7aff4f43 65static int config_lsm_aa_incomplete(const char *, const char *, struct lxc_conf *);
fe4de9a6 66static int config_lsm_se_context(const char *, const char *, struct lxc_conf *);
12a50cc6 67static int config_cgroup(const char *, const char *, struct lxc_conf *);
f6d3e3e4 68static int config_idmap(const char *, const char *, struct lxc_conf *);
4a85ce2a
SH		 69static int config_loglevel(const char *, const char *, struct lxc_conf *);
70static int config_logfile(const char *, const char *, struct lxc_conf *);
12a50cc6 71static int config_mount(const char *, const char *, struct lxc_conf *);
70f55bfd
NC		 72static int config_mount_auto(const char *, const char *, struct lxc_conf *);
73static int config_fstab(const char *, const char *, struct lxc_conf *);
12a50cc6
DE		 74static int config_rootfs(const char *, const char *, struct lxc_conf *);
75static int config_rootfs_mount(const char *, const char *, struct lxc_conf *);
a17b1e65 76static int config_rootfs_options(const char *, const char *, struct lxc_conf *);
327a1e78 77static int config_rootfs_backend(const char *, const char *, struct lxc_conf *);
12a50cc6
DE		 78static int config_pivotdir(const char *, const char *, struct lxc_conf *);
79static int config_utsname(const char *, const char *, struct lxc_conf *);
80static int config_hook(const char *, const char *, struct lxc_conf *lxc_conf);
6b0d5538 81static int config_network(const char *, const char *, struct lxc_conf *);
12a50cc6
DE		 82static int config_network_type(const char *, const char *, struct lxc_conf *);
83static int config_network_flags(const char *, const char *, struct lxc_conf *);
84static int config_network_link(const char *, const char *, struct lxc_conf *);
85static int config_network_name(const char *, const char *, struct lxc_conf *);
86static int config_network_veth_pair(const char *, const char *, struct lxc_conf *);
87static int config_network_macvlan_mode(const char *, const char *, struct lxc_conf *);
88static int config_network_hwaddr(const char *, const char *, struct lxc_conf *);
89static int config_network_vlan_id(const char *, const char *, struct lxc_conf *);
90static int config_network_mtu(const char *, const char *, struct lxc_conf *);
91static int config_network_ipv4(const char *, const char *, struct lxc_conf *);
92static int config_network_ipv4_gateway(const char *, const char *, struct lxc_conf *);
8fc8295a
DE		 93static int config_network_script_up(const char *, const char *, struct lxc_conf *);
94static int config_network_script_down(const char *, const char *, struct lxc_conf *);
12a50cc6
DE		 95static int config_network_ipv6(const char *, const char *, struct lxc_conf *);
96static int config_network_ipv6_gateway(const char *, const char *, struct lxc_conf *);
97static int config_cap_drop(const char *, const char *, struct lxc_conf *);
1fb86a7c 98static int config_cap_keep(const char *, const char *, struct lxc_conf *);
12a50cc6 99static int config_console(const char *, const char *, struct lxc_conf *);
96f15ca1 100static int config_console_logfile(const char *, const char *, struct lxc_conf *);
12a50cc6
DE		 101static int config_seccomp(const char *, const char *, struct lxc_conf *);
102static int config_includefile(const char *, const char *, struct lxc_conf *);
103static int config_network_nic(const char *, const char *, struct lxc_conf *);
104static int config_autodev(const char *, const char *, struct lxc_conf *);
f0f1d8c0 105static int config_haltsignal(const char *, const char *, struct lxc_conf *);
dd267776 106static int config_rebootsignal(const char *, const char *, struct lxc_conf *);
a84b9932 107static int config_stopsignal(const char *, const char *, struct lxc_conf *);
ee1e7aa0 108static int config_start(const char *, const char *, struct lxc_conf *);
64c57ea1 109static int config_syslog(const char *, const char *, struct lxc_conf *);
a8dfe4e0 110static int config_monitor(const char *, const char *, struct lxc_conf *);
ee1e7aa0 111static int config_group(const char *, const char *, struct lxc_conf *);
7c661726 112static int config_environment(const char *, const char *, struct lxc_conf *);
67c660d0 113static int config_init_cmd(const char *, const char *, struct lxc_conf *);
72bb04e4
PT		 114static int config_init_uid(const char *, const char *, struct lxc_conf *);
115static int config_init_gid(const char *, const char *, struct lxc_conf *);
8796becf 116static int config_ephemeral(const char *, const char *, struct lxc_conf *);
5a46f283 117static int config_no_new_privs(const char *, const char *, struct lxc_conf *);
c2cc9f0a 118
72d0e1cb 119static struct lxc_config_t config[] = {
576f946d 120
cccc74b5 121 { "lxc.arch", config_personality },
e892973e
DL		 122 { "lxc.pts", config_pts },
123 { "lxc.tty", config_tty },
7c6ef2a2 124 { "lxc.devttydir", config_ttydir },
7e0e1d94 125 { "lxc.kmsg", config_kmsg },
fe4de9a6 126 { "lxc.aa_profile", config_lsm_aa_profile },
7aff4f43 127 { "lxc.aa_allow_incomplete", config_lsm_aa_incomplete },
fe4de9a6 128 { "lxc.se_context", config_lsm_se_context },
e892973e 129 { "lxc.cgroup", config_cgroup },
f6d3e3e4 130 { "lxc.id_map", config_idmap },
4a85ce2a
SH		 131 { "lxc.loglevel", config_loglevel },
132 { "lxc.logfile", config_logfile },
70f55bfd
NC		 133 { "lxc.mount.entry", config_mount },
134 { "lxc.mount.auto", config_mount_auto },
135 { "lxc.mount", config_fstab },
23b7ea69 136 { "lxc.rootfs.mount", config_rootfs_mount },
a17b1e65 137 { "lxc.rootfs.options", config_rootfs_options },
327a1e78 138 { "lxc.rootfs.backend", config_rootfs_backend },
e892973e 139 { "lxc.rootfs", config_rootfs },
bf601689 140 { "lxc.pivotdir", config_pivotdir },
e892973e 141 { "lxc.utsname", config_utsname },
26ddeedd 142 { "lxc.hook.pre-start", config_hook },
12a50cc6 143 { "lxc.hook.pre-mount", config_hook },
26ddeedd 144 { "lxc.hook.mount", config_hook },
f7bee6c6 145 { "lxc.hook.autodev", config_hook },
26ddeedd 146 { "lxc.hook.start", config_hook },
52492063 147 { "lxc.hook.stop", config_hook },
26ddeedd 148 { "lxc.hook.post-stop", config_hook },
148e91f5 149 { "lxc.hook.clone", config_hook },
37cf711b 150 { "lxc.hook.destroy", config_hook },
6b0d5538 151 { "lxc.hook", config_hook },
e892973e
DL		 152 { "lxc.network.type", config_network_type },
153 { "lxc.network.flags", config_network_flags },
154 { "lxc.network.link", config_network_link },
155 { "lxc.network.name", config_network_name },
156 { "lxc.network.macvlan.mode", config_network_macvlan_mode },
157 { "lxc.network.veth.pair", config_network_veth_pair },
8fc8295a
DE		 158 { "lxc.network.script.up", config_network_script_up },
159 { "lxc.network.script.down", config_network_script_down },
e892973e
DL		 160 { "lxc.network.hwaddr", config_network_hwaddr },
161 { "lxc.network.mtu", config_network_mtu },
162 { "lxc.network.vlan.id", config_network_vlan_id },
f8fee0e2 163 { "lxc.network.ipv4.gateway", config_network_ipv4_gateway },
e892973e 164 { "lxc.network.ipv4", config_network_ipv4 },
f8fee0e2 165 { "lxc.network.ipv6.gateway", config_network_ipv6_gateway },
e892973e 166 { "lxc.network.ipv6", config_network_ipv6 },
72d0e1cb
SG		 167 /* config_network_nic must come after all other 'lxc.network.*' entries */
168 { "lxc.network.", config_network_nic },
6b0d5538 169 { "lxc.network", config_network },
81810dd1 170 { "lxc.cap.drop", config_cap_drop },
1fb86a7c 171 { "lxc.cap.keep", config_cap_keep },
96f15ca1 172 { "lxc.console.logfile", config_console_logfile },
63376d7d 173 { "lxc.console", config_console },
8f2c3a70 174 { "lxc.seccomp", config_seccomp },
09ad6246 175 { "lxc.include", config_includefile },
c6883f38 176 { "lxc.autodev", config_autodev },
f0f1d8c0 177 { "lxc.haltsignal", config_haltsignal },
dd267776 178 { "lxc.rebootsignal", config_rebootsignal },
a84b9932 179 { "lxc.stopsignal", config_stopsignal },
ee1e7aa0
SG		 180 { "lxc.start.auto", config_start },
181 { "lxc.start.delay", config_start },
182 { "lxc.start.order", config_start },
a8dfe4e0 183 { "lxc.monitor.unshare", config_monitor },
ee1e7aa0 184 { "lxc.group", config_group },
7c661726 185 { "lxc.environment", config_environment },
67c660d0 186 { "lxc.init_cmd", config_init_cmd },
72bb04e4
PT		 187 { "lxc.init_uid", config_init_uid },
188 { "lxc.init_gid", config_init_gid },
8796becf 189 { "lxc.ephemeral", config_ephemeral },
64c57ea1 190 { "lxc.syslog", config_syslog },
5a46f283 191 { "lxc.no_new_privs", config_no_new_privs },
a84b9932
AV		 192};
193
194struct signame {
195 int num;
74a3920a 196 const char *name;
a84b9932
AV		 197};
198
74a3920a 199static const struct signame signames[] = {
a84b9932
AV		 200 { SIGHUP, "HUP" },
201 { SIGINT, "INT" },
202 { SIGQUIT, "QUIT" },
203 { SIGILL, "ILL" },
204 { SIGABRT, "ABRT" },
205 { SIGFPE, "FPE" },
206 { SIGKILL, "KILL" },
207 { SIGSEGV, "SEGV" },
208 { SIGPIPE, "PIPE" },
209 { SIGALRM, "ALRM" },
210 { SIGTERM, "TERM" },
211 { SIGUSR1, "USR1" },
212 { SIGUSR2, "USR2" },
213 { SIGCHLD, "CHLD" },
214 { SIGCONT, "CONT" },
215 { SIGSTOP, "STOP" },
216 { SIGTSTP, "TSTP" },
217 { SIGTTIN, "TTIN" },
218 { SIGTTOU, "TTOU" },
89dfc302
SY		 219#ifdef SIGTRAP
220 { SIGTRAP, "TRAP" },
221#endif
222#ifdef SIGIOT
223 { SIGIOT, "IOT" },
224#endif
225#ifdef SIGEMT
226 { SIGEMT, "EMT" },
227#endif
228#ifdef SIGBUS
229 { SIGBUS, "BUS" },
230#endif
231#ifdef SIGSTKFLT
232 { SIGSTKFLT, "STKFLT" },
233#endif
234#ifdef SIGCLD
235 { SIGCLD, "CLD" },
236#endif
237#ifdef SIGURG
238 { SIGURG, "URG" },
239#endif
240#ifdef SIGXCPU
241 { SIGXCPU, "XCPU" },
242#endif
243#ifdef SIGXFSZ
244 { SIGXFSZ, "XFSZ" },
245#endif
246#ifdef SIGVTALRM
247 { SIGVTALRM, "VTALRM" },
248#endif
249#ifdef SIGPROF
250 { SIGPROF, "PROF" },
251#endif
252#ifdef SIGWINCH
253 { SIGWINCH, "WINCH" },
254#endif
255#ifdef SIGIO
256 { SIGIO, "IO" },
257#endif
258#ifdef SIGPOLL
259 { SIGPOLL, "POLL" },
260#endif
261#ifdef SIGINFO
262 { SIGINFO, "INFO" },
263#endif
264#ifdef SIGLOST
265 { SIGLOST, "LOST" },
266#endif
267#ifdef SIGPWR
268 { SIGPWR, "PWR" },
269#endif
270#ifdef SIGUNUSED
271 { SIGUNUSED, "UNUSED" },
272#endif
273#ifdef SIGSYS
274 { SIGSYS, "SYS" },
275#endif
c2cc9f0a 276};
277
72d0e1cb 278static const size_t config_size = sizeof(config)/sizeof(struct lxc_config_t);
c2cc9f0a 279
72d0e1cb 280extern struct lxc_config_t *lxc_getconfig(const char *key)
c2cc9f0a 281{
84760c11 282 size_t i;
c2cc9f0a 283
284 for (i = 0; i < config_size; i++)
a871ff6b 285 if (!strncmp(config[i].name, key,
c2cc9f0a 286 strlen(config[i].name)))
287 return &config[i];
288 return NULL;
289}
290
72d0e1cb
SG		 291#define strprint(str, inlen, ...) \
292 do { \
293 len = snprintf(str, inlen, ##__VA_ARGS__); \
294 if (len < 0) { SYSERROR("snprintf"); return -1; }; \
295 fulllen += len; \
296 if (inlen > 0) { \
297 if (str) str += len; \
298 inlen -= len; \
299 if (inlen < 0) inlen = 0; \
300 } \
301 } while (0);
302
303int lxc_listconfigs(char *retv, int inlen)
304{
84760c11 305 size_t i;
306 int fulllen = 0, len;
72d0e1cb
SG		 307
308 if (!retv)
309 inlen = 0;
310 else
311 memset(retv, 0, inlen);
312 for (i = 0; i < config_size; i++) {
313 char *s = config[i].name;
314 if (s[strlen(s)-1] == '.')
315 continue;
316 strprint(retv, inlen, "%s\n", s);
317 }
318 return fulllen;
319}
320
6d03d92a
DE		 321static int config_string_item(char **conf_item, const char *value)
322{
323 char *new_value;
324
d6eca240 325 if (!value || strlen(value) == 0) {
f10fad2f 326 free(*conf_item);
d6eca240 327 *conf_item = NULL;
6d03d92a 328 return 0;
d6eca240 329 }
6d03d92a
DE		 330
331 new_value = strdup(value);
332 if (!new_value) {
333 SYSERROR("failed to strdup '%s': %m", value);
334 return -1;
335 }
336
f10fad2f 337 free(*conf_item);
6d03d92a
DE		 338 *conf_item = new_value;
339 return 0;
340}
341
342static int config_string_item_max(char **conf_item, const char *value,
343 size_t max)
344{
345 if (strlen(value) >= max) {
a5a82508 346 ERROR("%s is too long (>= %lu)", value, (unsigned long)max);
6d03d92a
DE		 347 return -1;
348 }
349
350 return config_string_item(conf_item, value);
351}
352
353static int config_path_item(char **conf_item, const char *value)
354{
355 return config_string_item_max(conf_item, value, PATH_MAX);
356}
357
72d0e1cb
SG		 358/*
359 * config entry is something like "lxc.network.0.ipv4"
360 * the key 'lxc.network.' was found. So we make sure next
361 * comes an integer, find the right callback (by rewriting
362 * the key), and call it.
363 */
12a50cc6 364static int config_network_nic(const char *key, const char *value,
72d0e1cb
SG		 365 struct lxc_conf *lxc_conf)
366{
367 char *copy = strdup(key), *p;
368 int ret = -1;
369 struct lxc_config_t *config;
370
371 if (!copy) {
372 SYSERROR("failed to allocate memory");
373 return -1;
374 }
375 /*
376 * ok we know that to get here we've got "lxc.network."
377 * and it isn't any of the other network entries. So
378 * after the second . should come an integer (# of defined
379 * nic) followed by a valid entry.
380 */
381 if (*(key+12) < '0' || *(key+12) > '9')
382 goto out;
46cd2845 383 p = strchr(key+12, '.');
72d0e1cb
SG		 384 if (!p)
385 goto out;
386 strcpy(copy+12, p+1);
387 config = lxc_getconfig(copy);
388 if (!config) {
389 ERROR("unknown key %s", key);
390 goto out;
391 }
392 ret = config->cb(key, value, lxc_conf);
393
394out:
395 free(copy);
396 return ret;
397}
398
6b0d5538
SH		 399static int config_network(const char *key, const char *value,
400 struct lxc_conf *lxc_conf)
401{
402 if (value && strlen(value)) {
403 ERROR("lxc.network must not have a value");
404 return -1;
405 }
406
407 return lxc_clear_config_network(lxc_conf);
408}
409
261658e8
BP		 410static int macvlan_mode(int *valuep, const char *value);
411
12a50cc6 412static int config_network_type(const char *key, const char *value,
e892973e 413 struct lxc_conf *lxc_conf)
c2cc9f0a 414{
5f4535a3 415 struct lxc_list *network = &lxc_conf->network;
c2cc9f0a 416 struct lxc_netdev *netdev;
417 struct lxc_list *list;
c2cc9f0a 418
7d0eb87e
SH		 419 if (!value || strlen(value) == 0)
420 return lxc_clear_config_network(lxc_conf);
421
c2cc9f0a 422 netdev = malloc(sizeof(*netdev));
423 if (!netdev) {
36eb9bde 424 SYSERROR("failed to allocate memory");
c2cc9f0a 425 return -1;
426 }
427
82d5ae15 428 memset(netdev, 0, sizeof(*netdev));
c2cc9f0a 429 lxc_list_init(&netdev->ipv4);
430 lxc_list_init(&netdev->ipv6);
c2cc9f0a 431
432 list = malloc(sizeof(*list));
433 if (!list) {
36eb9bde 434 SYSERROR("failed to allocate memory");
022de5f3 435 free(netdev);
c2cc9f0a 436 return -1;
437 }
438
439 lxc_list_init(list);
5f4535a3 440 list->elem = netdev;
c2cc9f0a 441
bac89583 442 lxc_list_add_tail(network, list);
a871ff6b 443
c2cc9f0a 444 if (!strcmp(value, "veth"))
24654103 445 netdev->type = LXC_NET_VETH;
261658e8 446 else if (!strcmp(value, "macvlan")) {
24654103 447 netdev->type = LXC_NET_MACVLAN;
261658e8
BP		 448 macvlan_mode(&netdev->priv.macvlan_attr.mode, "private");
449 }
26c39028 450 else if (!strcmp(value, "vlan"))
24654103 451 netdev->type = LXC_NET_VLAN;
c2cc9f0a 452 else if (!strcmp(value, "phys"))
24654103 453 netdev->type = LXC_NET_PHYS;
5f58350a 454 else if (!strcmp(value, "empty"))
24654103 455 netdev->type = LXC_NET_EMPTY;
26b797f3
SH		 456 else if (!strcmp(value, "none"))
457 netdev->type = LXC_NET_NONE;
c2cc9f0a 458 else {
36eb9bde 459 ERROR("invalid network type %s", value);
c2cc9f0a 460 return -1;
461 }
462 return 0;
463}
464
a059591e
DL		 465static int config_ip_prefix(struct in_addr *addr)
466{
467 if (IN_CLASSA(addr->s_addr))
468 return 32 - IN_CLASSA_NSHIFT;
469 if (IN_CLASSB(addr->s_addr))
470 return 32 - IN_CLASSB_NSHIFT;
471 if (IN_CLASSC(addr->s_addr))
472 return 32 - IN_CLASSC_NSHIFT;
473
474 return 0;
475}
476
72d0e1cb
SG		 477/*
478 * if you have p="lxc.network.0.link", pass it p+12
479 * to get back '0' (the index of the nic)
480 */
481static int get_network_netdev_idx(const char *key)
482{
483 int ret, idx;
484
485 if (*key < '0' || *key > '9')
486 return -1;
487 ret = sscanf(key, "%d", &idx);
488 if (ret != 1)
489 return -1;
490 return idx;
491}
492
493/*
494 * if you have p="lxc.network.0", pass this p+12 and it will return
495 * the netdev of the first configured nic
496 */
497static struct lxc_netdev *get_netdev_from_key(const char *key,
498 struct lxc_list *network)
499{
500 int i = 0, idx = get_network_netdev_idx(key);
501 struct lxc_netdev *netdev = NULL;
502 struct lxc_list *it;
503 if (idx == -1)
504 return NULL;
505 lxc_list_for_each(it, network) {
506 if (idx == i++) {
507 netdev = it->elem;
508 break;
509 }
510 }
511 return netdev;
512}
513
12a50cc6
DE		 514extern int lxc_list_nicconfigs(struct lxc_conf *c, const char *key,
515 char *retv, int inlen)
72d0e1cb
SG		 516{
517 struct lxc_netdev *netdev;
518 int fulllen = 0, len;
519
520 netdev = get_netdev_from_key(key+12, &c->network);
521 if (!netdev)
522 return -1;
523
524 if (!retv)
525 inlen = 0;
526 else
527 memset(retv, 0, inlen);
528
74836992 529 strprint(retv, inlen, "type\n");
72d0e1cb 530 strprint(retv, inlen, "script.up\n");
8fc8295a 531 strprint(retv, inlen, "script.down\n");
72d0e1cb
SG		 532 if (netdev->type != LXC_NET_EMPTY) {
533 strprint(retv, inlen, "flags\n");
534 strprint(retv, inlen, "link\n");
535 strprint(retv, inlen, "name\n");
536 strprint(retv, inlen, "hwaddr\n");
537 strprint(retv, inlen, "mtu\n");
538 strprint(retv, inlen, "ipv6\n");
9eaf8a59 539 strprint(retv, inlen, "ipv6.gateway\n");
72d0e1cb 540 strprint(retv, inlen, "ipv4\n");
9eaf8a59 541 strprint(retv, inlen, "ipv4.gateway\n");
72d0e1cb
SG		 542 }
543 switch(netdev->type) {
544 case LXC_NET_VETH:
545 strprint(retv, inlen, "veth.pair\n");
546 break;
547 case LXC_NET_MACVLAN:
548 strprint(retv, inlen, "macvlan.mode\n");
549 break;
550 case LXC_NET_VLAN:
551 strprint(retv, inlen, "vlan.id\n");
552 break;
553 case LXC_NET_PHYS:
554 break;
555 }
556 return fulllen;
557}
558
16950ecb
DL		 559static struct lxc_netdev *network_netdev(const char *key, const char *value,
560 struct lxc_list *network)
c2cc9f0a 561{
72d0e1cb 562 struct lxc_netdev *netdev = NULL;
c2cc9f0a 563
5f4535a3 564 if (lxc_list_empty(network)) {
16950ecb
DL		 565 ERROR("network is not created for '%s' = '%s' option",
566 key, value);
33c945e0 567 return NULL;
c2cc9f0a 568 }
569
72d0e1cb
SG		 570 if (get_network_netdev_idx(key+12) == -1)
571 netdev = lxc_list_last_elem(network);
572 else
573 netdev = get_netdev_from_key(key+12, network);
574
5f4535a3 575 if (!netdev) {
16950ecb
DL		 576 ERROR("no network device defined for '%s' = '%s' option",
577 key, value);
33c945e0 578 return NULL;
c2cc9f0a 579 }
580
33c945e0 581 return netdev;
c2cc9f0a 582}
583
12a50cc6 584static int network_ifname(char **valuep, const char *value)
c2cc9f0a 585{
c9bb9a85 586 return config_string_item_max(valuep, value, IFNAMSIZ);
c2cc9f0a 587}
588
e892973e
DL		 589#ifndef MACVLAN_MODE_PRIVATE
590# define MACVLAN_MODE_PRIVATE 1
591#endif
592
593#ifndef MACVLAN_MODE_VEPA
594# define MACVLAN_MODE_VEPA 2
595#endif
596
597#ifndef MACVLAN_MODE_BRIDGE
598# define MACVLAN_MODE_BRIDGE 4
599#endif
600
99854161
EL		 601#ifndef MACVLAN_MODE_PASSTHRU
602# define MACVLAN_MODE_PASSTHRU 8
603#endif
604
12a50cc6 605static int macvlan_mode(int *valuep, const char *value)
e892973e
DL		 606{
607 struct mc_mode {
608 char *name;
609 int mode;
610 } m[] = {
611 { "private", MACVLAN_MODE_PRIVATE },
612 { "vepa", MACVLAN_MODE_VEPA },
613 { "bridge", MACVLAN_MODE_BRIDGE },
99854161 614 { "passthru", MACVLAN_MODE_PASSTHRU },
e892973e
DL		 615 };
616
84760c11 617 size_t i;
e892973e
DL		 618
619 for (i = 0; i < sizeof(m)/sizeof(m[0]); i++) {
620 if (strcmp(m[i].name, value))
621 continue;
622
623 *valuep = m[i].mode;
624 return 0;
625 }
626
627 return -1;
628}
629
508c263e
SH		 630static int rand_complete_hwaddr(char *hwaddr)
631{
632 const char hex[] = "0123456789abcdef";
633 char *curs = hwaddr;
634
635#ifndef HAVE_RAND_R
636 randseed(true);
637#else
638 unsigned int seed=randseed(false);
639#endif
e6744e9b 640 while (*curs != '\0' && *curs != '\n')
508c263e
SH		 641 {
642 if ( *curs == 'x' || *curs == 'X' ) {
643 if (curs - hwaddr == 1) {
644 //ensure address is unicast
645#ifdef HAVE_RAND_R
646 *curs = hex[rand_r(&seed) & 0x0E];
647 } else {
648 *curs = hex[rand_r(&seed) & 0x0F];
649#else
650 *curs = hex[rand() & 0x0E];
651 } else {
652 *curs = hex[rand() & 0x0F];
653#endif
654 }
655 }
656 curs++;
657 }
658 return 0;
659}
660
12a50cc6 661static int config_network_flags(const char *key, const char *value,
33c945e0 662 struct lxc_conf *lxc_conf)
c2cc9f0a 663{
c2cc9f0a 664 struct lxc_netdev *netdev;
665
16950ecb 666 netdev = network_netdev(key, value, &lxc_conf->network);
33c945e0 667 if (!netdev)
c2cc9f0a 668 return -1;
c2cc9f0a 669
33c945e0 670 netdev->flags |= IFF_UP;
c2cc9f0a 671
33c945e0
MT		 672 return 0;
673}
674
12a50cc6 675static int config_network_link(const char *key, const char *value,
33c945e0
MT		 676 struct lxc_conf *lxc_conf)
677{
678 struct lxc_netdev *netdev;
679
16950ecb 680 netdev = network_netdev(key, value, &lxc_conf->network);
33c945e0 681 if (!netdev)
c2cc9f0a 682 return -1;
c2cc9f0a 683
33c945e0 684 return network_ifname(&netdev->link, value);
c2cc9f0a 685}
686
12a50cc6 687static int config_network_name(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
MT		 696 return network_ifname(&netdev->name, value);
697}
698
12a50cc6 699static int config_network_veth_pair(const char *key, const char *value,
e892973e
DL		 700 struct lxc_conf *lxc_conf)
701{
702 struct lxc_netdev *netdev;
703
704 netdev = network_netdev(key, value, &lxc_conf->network);
705 if (!netdev)
706 return -1;
707
c5316d60 708 if (netdev->type != LXC_NET_VETH) {
128d327a 709 ERROR("Invalid veth pair for a non-veth netdev");
c5316d60
SH		 710 return -1;
711 }
e892973e
DL		 712 return network_ifname(&netdev->priv.veth_attr.pair, value);
713}
714
12a50cc6 715static int config_network_macvlan_mode(const char *key, const char *value,
e892973e 716 struct lxc_conf *lxc_conf)
8634bc19
MT		 717{
718 struct lxc_netdev *netdev;
719
720 netdev = network_netdev(key, value, &lxc_conf->network);
721 if (!netdev)
722 return -1;
723
c5316d60 724 if (netdev->type != LXC_NET_MACVLAN) {
128d327a 725 ERROR("Invalid macvlan.mode for a non-macvlan netdev");
c5316d60
SH		 726 return -1;
727 }
e892973e 728 return macvlan_mode(&netdev->priv.macvlan_attr.mode, value);
8634bc19
MT		 729}
730
12a50cc6 731static int config_network_hwaddr(const char *key, const char *value,
33c945e0
MT		 732 struct lxc_conf *lxc_conf)
733{
734 struct lxc_netdev *netdev;
735
508c263e
SH		 736 char *new_value = strdup(value);
737 if (!new_value) {
738 SYSERROR("failed to strdup '%s': %m", value);
c2cc9f0a 739 return -1;
508c263e
SH		 740 }
741 rand_complete_hwaddr(new_value);
c2cc9f0a 742
508c263e
SH		 743 netdev = network_netdev(key, new_value, &lxc_conf->network);
744 if (!netdev) {
745 free(new_value);
746 return -1;
747 };
748
749 if (!new_value || strlen(new_value) == 0) {
750 free(new_value);
751 netdev->hwaddr = NULL;
752 return 0;
753 }
754
755 netdev->hwaddr = new_value;
756 return 0;
c2cc9f0a 757}
758
12a50cc6 759static int config_network_vlan_id(const char *key, const char *value,
26c39028
JHS		 760 struct lxc_conf *lxc_conf)
761{
762 struct lxc_netdev *netdev;
763
764 netdev = network_netdev(key, value, &lxc_conf->network);
765 if (!netdev)
766 return -1;
767
c5316d60 768 if (netdev->type != LXC_NET_VLAN) {
128d327a 769 ERROR("Invalid vlan.id for a non-macvlan netdev");
c5316d60
SH		 770 return -1;
771 }
f6cc1de1 772 if (get_u16(&netdev->priv.vlan_attr.vid, value, 0))
26c39028
JHS		 773 return -1;
774
775 return 0;
776}
777
12a50cc6 778static int config_network_mtu(const char *key, const char *value,
33c945e0 779 struct lxc_conf *lxc_conf)
442cbbe6 780{
442cbbe6
TR		 781 struct lxc_netdev *netdev;
782
16950ecb 783 netdev = network_netdev(key, value, &lxc_conf->network);
33c945e0 784 if (!netdev)
442cbbe6 785 return -1;
442cbbe6 786
6d03d92a 787 return config_string_item(&netdev->mtu, value);
442cbbe6
TR		 788}
789
12a50cc6 790static int config_network_ipv4(const char *key, const char *value,
33c945e0 791 struct lxc_conf *lxc_conf)
c2cc9f0a 792{
c2cc9f0a 793 struct lxc_netdev *netdev;
33c945e0 794 struct lxc_inetdev *inetdev;
c2cc9f0a 795 struct lxc_list *list;
796 char *cursor, *slash, *addr = NULL, *bcast = NULL, *prefix = NULL;
797
16950ecb 798 netdev = network_netdev(key, value, &lxc_conf->network);
33c945e0 799 if (!netdev)
c2cc9f0a 800 return -1;
c2cc9f0a 801
802 inetdev = malloc(sizeof(*inetdev));
803 if (!inetdev) {
36eb9bde 804 SYSERROR("failed to allocate ipv4 address");
c2cc9f0a 805 return -1;
806 }
807 memset(inetdev, 0, sizeof(*inetdev));
808
809 list = malloc(sizeof(*list));
810 if (!list) {
36eb9bde 811 SYSERROR("failed to allocate memory");
53719062 812 free(inetdev);
c2cc9f0a 813 return -1;
814 }
815
816 lxc_list_init(list);
817 list->elem = inetdev;
818
956edc54
SG		 819 addr = strdup(value);
820 if (!addr) {
821 ERROR("no address specified");
53719062
SH		 822 free(inetdev);
823 free(list);
956edc54
SG		 824 return -1;
825 }
c2cc9f0a 826
827 cursor = strstr(addr, " ");
828 if (cursor) {
829 *cursor = '\0';
830 bcast = cursor + 1;
831 }
832
833 slash = strstr(addr, "/");
834 if (slash) {
835 *slash = '\0';
836 prefix = slash + 1;
837 }
838
c2cc9f0a 839 if (!inet_pton(AF_INET, addr, &inetdev->addr)) {
36eb9bde 840 SYSERROR("invalid ipv4 address: %s", value);
53719062 841 free(inetdev);
956edc54 842 free(addr);
53719062 843 free(list);
c2cc9f0a 844 return -1;
845 }
846
0093bb8c
DL		 847 if (bcast && !inet_pton(AF_INET, bcast, &inetdev->bcast)) {
848 SYSERROR("invalid ipv4 broadcast address: %s", value);
53719062
SH		 849 free(inetdev);
850 free(list);
956edc54 851 free(addr);
0093bb8c
DL		 852 return -1;
853 }
c2cc9f0a 854
a059591e 855 /* no prefix specified, determine it from the network class */
1c633398
CB		 856 if (prefix) {
857 if (lxc_safe_uint(prefix, &inetdev->prefix) < 0)
858 return -1;
859 } else {
860 inetdev->prefix = config_ip_prefix(&inetdev->addr);
861 }
a059591e 862
b3df193c 863 /* if no broadcast address, let compute one from the
0093bb8c
DL		 864 * prefix and address
865 */
866 if (!bcast) {
1b7d4743
DL		 867 inetdev->bcast.s_addr = inetdev->addr.s_addr;
868 inetdev->bcast.s_addr |=
869 htonl(INADDR_BROADCAST >> inetdev->prefix);
0093bb8c 870 }
c2cc9f0a 871
8538f388 872 lxc_list_add_tail(&netdev->ipv4, list);
c2cc9f0a 873
956edc54 874 free(addr);
c2cc9f0a 875 return 0;
876}
877
12a50cc6 878static int config_network_ipv4_gateway(const char *key, const char *value,
f8fee0e2
MK		 879 struct lxc_conf *lxc_conf)
880{
881 struct lxc_netdev *netdev;
f8fee0e2
MK		 882
883 netdev = network_netdev(key, value, &lxc_conf->network);
884 if (!netdev)
885 return -1;
886
e088e926 887 free(netdev->ipv4_gateway);
f8fee0e2 888
e088e926
SG		 889 if (!value || strlen(value) == 0) {
890 netdev->ipv4_gateway = NULL;
891 } else if (!strcmp(value, "auto")) {
19a26f82
MK		 892 netdev->ipv4_gateway = NULL;
893 netdev->ipv4_gateway_auto = true;
894 } else {
e088e926
SG		 895 struct in_addr *gw;
896
897 gw = malloc(sizeof(*gw));
898 if (!gw) {
899 SYSERROR("failed to allocate ipv4 gateway address");
900 return -1;
901 }
902
19a26f82
MK		 903 if (!inet_pton(AF_INET, value, gw)) {
904 SYSERROR("invalid ipv4 gateway address: %s", value);
53719062 905 free(gw);
19a26f82
MK		 906 return -1;
907 }
908
909 netdev->ipv4_gateway = gw;
910 netdev->ipv4_gateway_auto = false;
f8fee0e2
MK		 911 }
912
f8fee0e2
MK		 913 return 0;
914}
915
12a50cc6 916static int config_network_ipv6(const char *key, const char *value,
e892973e 917 struct lxc_conf *lxc_conf)
c2cc9f0a 918{
c2cc9f0a 919 struct lxc_netdev *netdev;
920 struct lxc_inet6dev *inet6dev;
921 struct lxc_list *list;
12a50cc6 922 char *slash,*valdup;
c2cc9f0a 923 char *netmask;
924
16950ecb 925 netdev = network_netdev(key, value, &lxc_conf->network);
33c945e0 926 if (!netdev)
c2cc9f0a 927 return -1;
c2cc9f0a 928
929 inet6dev = malloc(sizeof(*inet6dev));
930 if (!inet6dev) {
36eb9bde 931 SYSERROR("failed to allocate ipv6 address");
c2cc9f0a 932 return -1;
933 }
934 memset(inet6dev, 0, sizeof(*inet6dev));
935
936 list = malloc(sizeof(*list));
937 if (!list) {
36eb9bde 938 SYSERROR("failed to allocate memory");
28027320 939 free(inet6dev);
c2cc9f0a 940 return -1;
941 }
942
943 lxc_list_init(list);
944 list->elem = inet6dev;
945
956edc54
SG		 946 valdup = strdup(value);
947 if (!valdup) {
948 ERROR("no address specified");
28027320
SH		 949 free(list);
950 free(inet6dev);
956edc54
SG		 951 return -1;
952 }
953
a059591e 954 inet6dev->prefix = 64;
12a50cc6 955 slash = strstr(valdup, "/");
c2cc9f0a 956 if (slash) {
957 *slash = '\0';
958 netmask = slash + 1;
1c633398
CB		 959 if (lxc_safe_uint(netmask, &inet6dev->prefix) < 0)
960 return -1;
c2cc9f0a 961 }
962
5acccf95
SH		 963 if (!inet_pton(AF_INET6, valdup, &inet6dev->addr)) {
964 SYSERROR("invalid ipv6 address: %s", valdup);
28027320
SH		 965 free(list);
966 free(inet6dev);
956edc54 967 free(valdup);
c2cc9f0a 968 return -1;
969 }
970
8538f388 971 lxc_list_add_tail(&netdev->ipv6, list);
c2cc9f0a 972
956edc54 973 free(valdup);
c2cc9f0a 974 return 0;
975}
976
12a50cc6 977static int config_network_ipv6_gateway(const char *key, const char *value,
f8fee0e2
MK		 978 struct lxc_conf *lxc_conf)
979{
980 struct lxc_netdev *netdev;
f8fee0e2
MK		 981
982 netdev = network_netdev(key, value, &lxc_conf->network);
983 if (!netdev)
984 return -1;
985
e088e926 986 free(netdev->ipv6_gateway);
f8fee0e2 987
e088e926 988 if (!value || strlen(value) == 0) {
ffe34437 989 netdev->ipv6_gateway = NULL;
e088e926 990 } else if (!strcmp(value, "auto")) {
19a26f82
MK		 991 netdev->ipv6_gateway = NULL;
992 netdev->ipv6_gateway_auto = true;
993 } else {
8fb86a37
SH		 994 struct in6_addr *gw;
995
bec695f3
DE		 996 gw = malloc(sizeof(*gw));
997 if (!gw) {
998 SYSERROR("failed to allocate ipv6 gateway address");
999 return -1;
1000 }
1001
19a26f82
MK		 1002 if (!inet_pton(AF_INET6, value, gw)) {
1003 SYSERROR("invalid ipv6 gateway address: %s", value);
28027320 1004 free(gw);
19a26f82
MK		 1005 return -1;
1006 }
1007
1008 netdev->ipv6_gateway = gw;
1009 netdev->ipv6_gateway_auto = false;
f8fee0e2
MK		 1010 }
1011
f8fee0e2
MK		 1012 return 0;
1013}
1014
8fc8295a
DE		 1015static int config_network_script_up(const char *key, const char *value,
1016 struct lxc_conf *lxc_conf)
e3b4c4c4
ST		 1017{
1018 struct lxc_netdev *netdev;
1019
1020 netdev = network_netdev(key, value, &lxc_conf->network);
1021 if (!netdev)
8fc8295a 1022 return -1;
e3b4c4c4 1023
8fc8295a
DE		 1024 return config_string_item(&netdev->upscript, value);
1025}
1026
1027static int config_network_script_down(const char *key, const char *value,
1028 struct lxc_conf *lxc_conf)
1029{
1030 struct lxc_netdev *netdev;
1031
1032 netdev = network_netdev(key, value, &lxc_conf->network);
1033 if (!netdev)
1034 return -1;
1035
1036 return config_string_item(&netdev->downscript, value);
e3b4c4c4
ST		 1037}
1038
26ddeedd
SH		 1039static int add_hook(struct lxc_conf *lxc_conf, int which, char *hook)
1040{
1041 struct lxc_list *hooklist;
1042
1043 hooklist = malloc(sizeof(*hooklist));
1044 if (!hooklist) {
1045 free(hook);
1046 return -1;
1047 }
1048 hooklist->elem = hook;
1049 lxc_list_add_tail(&lxc_conf->hooks[which], hooklist);
1050 return 0;
1051}
1052
12a50cc6 1053static int config_seccomp(const char *key, const char *value,
8f2c3a70
SH		 1054 struct lxc_conf *lxc_conf)
1055{
6d03d92a 1056 return config_path_item(&lxc_conf->seccomp, value);
8f2c3a70
SH		 1057}
1058
67c660d0
SG		 1059static int config_init_cmd(const char *key, const char *value,
1060 struct lxc_conf *lxc_conf)
1061{
1062 return config_path_item(&lxc_conf->init_cmd, value);
1063}
1064
72bb04e4
PT		 1065static int config_init_uid(const char *key, const char *value,
1066 struct lxc_conf *lxc_conf)
1067{
d1e5d636
CB		 1068 unsigned int init_uid;
1069
1070 if (lxc_safe_uint(value, &init_uid) < 0)
1071 return -1;
1072 lxc_conf->init_uid = init_uid;
1073
72bb04e4
PT		 1074 return 0;
1075}
1076
1077static int config_init_gid(const char *key, const char *value,
1078 struct lxc_conf *lxc_conf)
1079{
d1e5d636
CB		 1080 unsigned int init_gid;
1081
1082 if (lxc_safe_uint(value, &init_gid) < 0)
1083 return -1;
1084 lxc_conf->init_gid = init_gid;
1085
72bb04e4
PT		 1086 return 0;
1087}
1088
12a50cc6 1089static int config_hook(const char *key, const char *value,
26ddeedd
SH		 1090 struct lxc_conf *lxc_conf)
1091{
7d0eb87e 1092 char *copy;
72bb04e4 1093
7d0eb87e
SH		 1094 if (!value || strlen(value) == 0)
1095 return lxc_clear_hooks(lxc_conf, key);
1096
6b0d5538
SH		 1097 if (strcmp(key, "lxc.hook") == 0) {
1098 ERROR("lxc.hook cannot take a value");
1099 return -1;
1100 }
7d0eb87e 1101 copy = strdup(value);
26ddeedd
SH		 1102 if (!copy) {
1103 SYSERROR("failed to dup string '%s'", value);
1104 return -1;
1105 }
1106 if (strcmp(key, "lxc.hook.pre-start") == 0)
1107 return add_hook(lxc_conf, LXCHOOK_PRESTART, copy);
5ea6163a
SH		 1108 else if (strcmp(key, "lxc.hook.pre-mount") == 0)
1109 return add_hook(lxc_conf, LXCHOOK_PREMOUNT, copy);
f7bee6c6
MW		 1110 else if (strcmp(key, "lxc.hook.autodev") == 0)
1111 return add_hook(lxc_conf, LXCHOOK_AUTODEV, copy);
26ddeedd
SH		 1112 else if (strcmp(key, "lxc.hook.mount") == 0)
1113 return add_hook(lxc_conf, LXCHOOK_MOUNT, copy);
1114 else if (strcmp(key, "lxc.hook.start") == 0)
1115 return add_hook(lxc_conf, LXCHOOK_START, copy);
52492063
WB		 1116 else if (strcmp(key, "lxc.hook.stop") == 0)
1117 return add_hook(lxc_conf, LXCHOOK_STOP, copy);
26ddeedd
SH		 1118 else if (strcmp(key, "lxc.hook.post-stop") == 0)
1119 return add_hook(lxc_conf, LXCHOOK_POSTSTOP, copy);
148e91f5
SH		 1120 else if (strcmp(key, "lxc.hook.clone") == 0)
1121 return add_hook(lxc_conf, LXCHOOK_CLONE, copy);
37cf711b
SY		 1122 else if (strcmp(key, "lxc.hook.destroy") == 0)
1123 return add_hook(lxc_conf, LXCHOOK_DESTROY, copy);
26ddeedd
SH		 1124 SYSERROR("Unknown key: %s", key);
1125 free(copy);
1126 return -1;
1127}
1128
8f47bc3f 1129static int config_personality(const char *key, const char *value,
cccc74b5
DL		 1130 struct lxc_conf *lxc_conf)
1131{
525f0002 1132 signed long personality = lxc_config_parse_arch(value);
cccc74b5 1133
525f0002
CS		 1134 if (personality >= 0)
1135 lxc_conf->personality = personality;
1136 else
1137 WARN("unsupported personality '%s'", value);
970ab589
DL		 1138
1139 return 0;
cccc74b5
DL		 1140}
1141
12a50cc6
DE		 1142static int config_pts(const char *key, const char *value,
1143 struct lxc_conf *lxc_conf)
10db618d 1144{
1145 int maxpts = atoi(value);
1146
1147 lxc_conf->pts = maxpts;
1148
1149 return 0;
1150}
1151
ee1e7aa0
SG		 1152static int config_start(const char *key, const char *value,
1153 struct lxc_conf *lxc_conf)
1154{
1155 if(strcmp(key, "lxc.start.auto") == 0) {
1156 lxc_conf->start_auto = atoi(value);
1157 return 0;
1158 }
1159 else if (strcmp(key, "lxc.start.delay") == 0) {
1160 lxc_conf->start_delay = atoi(value);
1161 return 0;
1162 }
1163 else if (strcmp(key, "lxc.start.order") == 0) {
1164 lxc_conf->start_order = atoi(value);
1165 return 0;
1166 }
1167 SYSERROR("Unknown key: %s", key);
1168 return -1;
1169}
1170
a8dfe4e0
WB		 1171static int config_monitor(const char *key, const char *value,
1172 struct lxc_conf *lxc_conf)
1173{
1174 if(strcmp(key, "lxc.monitor.unshare") == 0) {
1175 lxc_conf->monitor_unshare = atoi(value);
1176 return 0;
1177 }
1178 SYSERROR("Unknown key: %s", key);
1179 return -1;
1180}
1181
ee1e7aa0
SG		 1182static int config_group(const char *key, const char *value,
1183 struct lxc_conf *lxc_conf)
1184{
1185 char *groups, *groupptr, *sptr, *token;
1186 struct lxc_list *grouplist;
1187 int ret = -1;
1188
1189 if (!strlen(value))
1190 return lxc_clear_groups(lxc_conf);
1191
1192 groups = strdup(value);
1193 if (!groups) {
1194 SYSERROR("failed to dup '%s'", value);
1195 return -1;
1196 }
1197
1198 /* in case several groups are specified in a single line
1199 * split these groups in a single element for the list */
1200 for (groupptr = groups;;groupptr = NULL) {
d028235d
SG		 1201 token = strtok_r(groupptr, " \t", &sptr);
1202 if (!token) {
ee1e7aa0 1203 ret = 0;
d028235d 1204 break;
ee1e7aa0
SG		 1205 }
1206
1207 grouplist = malloc(sizeof(*grouplist));
1208 if (!grouplist) {
1209 SYSERROR("failed to allocate groups list");
1210 break;
1211 }
1212
1213 grouplist->elem = strdup(token);
1214 if (!grouplist->elem) {
1215 SYSERROR("failed to dup '%s'", token);
1216 free(grouplist);
1217 break;
1218 }
1219
1220 lxc_list_add_tail(&lxc_conf->groups, grouplist);
d028235d 1221 }
ee1e7aa0
SG		 1222
1223 free(groups);
1224
1225 return ret;
1226}
1227
7c661726
MP		 1228static int config_environment(const char *key, const char *value,
1229 struct lxc_conf *lxc_conf)
1230{
1231 struct lxc_list *list_item = NULL;
1232
ab799c0b
SG		 1233 if (!strlen(value))
1234 return lxc_clear_environment(lxc_conf);
1235
7c661726
MP		 1236 list_item = malloc(sizeof(*list_item));
1237 if (!list_item)
1238 goto freak_out;
1239
1240 list_item->elem = strdup(value);
1241
1242 if (!list_item->elem)
1243 goto freak_out;
1244
1245 lxc_list_add_tail(&lxc_conf->environment, list_item);
1246
1247 return 0;
1248
1249freak_out:
f10fad2f 1250 free(list_item);
7c661726
MP		 1251
1252 return -1;
1253}
1254
12a50cc6
DE		 1255static int config_tty(const char *key, const char *value,
1256 struct lxc_conf *lxc_conf)
b0a33c1e 1257{
1258 int nbtty = atoi(value);
1259
1260 lxc_conf->tty = nbtty;
1261
1262 return 0;
1263}
1264
12a50cc6 1265static int config_ttydir(const char *key, const char *value,
7c6ef2a2
SH		 1266 struct lxc_conf *lxc_conf)
1267{
6d03d92a 1268 return config_string_item_max(&lxc_conf->ttydir, value, NAME_MAX+1);
7c6ef2a2
SH		 1269}
1270
7e0e1d94
AV		 1271static int config_kmsg(const char *key, const char *value,
1272 struct lxc_conf *lxc_conf)
1273{
1274 int v = atoi(value);
1275
1276 lxc_conf->kmsg = v;
1277
1278 return 0;
1279}
1280
fe4de9a6
DE		 1281static int config_lsm_aa_profile(const char *key, const char *value,
1282 struct lxc_conf *lxc_conf)
e075f5d9 1283{
6d03d92a 1284 return config_string_item(&lxc_conf->lsm_aa_profile, value);
fe4de9a6
DE		 1285}
1286
7aff4f43
SH		 1287static int config_lsm_aa_incomplete(const char *key, const char *value,
1288 struct lxc_conf *lxc_conf)
1289{
1290 int v = atoi(value);
1291
1292 lxc_conf->lsm_aa_allow_incomplete = v == 1 ? 1 : 0;
1293
1294 return 0;
1295}
1296
fe4de9a6
DE		 1297static int config_lsm_se_context(const char *key, const char *value,
1298 struct lxc_conf *lxc_conf)
1299{
6d03d92a 1300 return config_string_item(&lxc_conf->lsm_se_context, value);
e075f5d9 1301}
e075f5d9 1302
4a85ce2a 1303static int config_logfile(const char *key, const char *value,
858377e4 1304 struct lxc_conf *c)
4a85ce2a 1305{
6d03d92a
DE		 1306 int ret;
1307
b40a606e
SH		 1308 // store these values in the lxc_conf, and then try to set for
1309 // actual current logging.
858377e4 1310 ret = config_path_item(&c->logfile, value);
6d03d92a 1311 if (ret == 0)
858377e4 1312 ret = lxc_log_set_file(&c->logfd, c->logfile);
6d03d92a 1313 return ret;
4a85ce2a
SH		 1314}
1315
1316static int config_loglevel(const char *key, const char *value,
1317 struct lxc_conf *lxc_conf)
1318{
9ea87d5d
SH		 1319 int newlevel;
1320
4a85ce2a
SH		 1321 if (!value || strlen(value) == 0)
1322 return 0;
1323
1324 if (value[0] >= '0' && value[0] <= '9')
9ea87d5d 1325 newlevel = atoi(value);
4a85ce2a 1326 else
9ea87d5d 1327 newlevel = lxc_log_priority_to_int(value);
b40a606e
SH		 1328 // store these values in the lxc_conf, and then try to set for
1329 // actual current logging.
1330 lxc_conf->loglevel = newlevel;
858377e4 1331 return lxc_log_set_level(&lxc_conf->loglevel, newlevel);
4a85ce2a
SH		 1332}
1333
12a50cc6 1334static int config_autodev(const char *key, const char *value,
c6883f38
SH		 1335 struct lxc_conf *lxc_conf)
1336{
1337 int v = atoi(value);
1338
1339 lxc_conf->autodev = v;
1340
1341 return 0;
1342}
1343
a84b9932
AV		 1344static int sig_num(const char *sig)
1345{
1346 int n;
1347 char *endp = NULL;
1348
1349 errno = 0;
1350 n = strtol(sig, &endp, 10);
1351 if (sig == endp || n < 0 || errno != 0)
1352 return -1;
1353 return n;
1354}
1355
1356static int rt_sig_num(const char *signame)
1357{
1358 int sig_n = 0;
1359 int rtmax = 0;
1360
1361 if (strncasecmp(signame, "max-", 4) == 0) {
1362 rtmax = 1;
1363 }
1364 signame += 4;
1365 if (!isdigit(*signame))
1366 return -1;
1367 sig_n = sig_num(signame);
1368 sig_n = rtmax ? SIGRTMAX - sig_n : SIGRTMIN + sig_n;
1369 if (sig_n > SIGRTMAX || sig_n < SIGRTMIN)
1370 return -1;
1371 return sig_n;
1372}
1373
1374static int sig_parse(const char *signame) {
84760c11 1375 size_t n;
a84b9932
AV		 1376
1377 if (isdigit(*signame)) {
1378 return sig_num(signame);
1379 } else if (strncasecmp(signame, "sig", 3) == 0) {
1380 signame += 3;
1381 if (strncasecmp(signame, "rt", 2) == 0)
1382 return rt_sig_num(signame + 2);
1383 for (n = 0; n < sizeof(signames) / sizeof((signames)[0]); n++) {
1384 if (strcasecmp (signames[n].name, signame) == 0)
1385 return signames[n].num;
1386 }
1387 }
1388 return -1;
1389}
1390
f0f1d8c0
DE		 1391static int config_haltsignal(const char *key, const char *value,
1392 struct lxc_conf *lxc_conf)
1393{
1394 int sig_n = sig_parse(value);
1395
1396 if (sig_n < 0)
1397 return -1;
1398 lxc_conf->haltsignal = sig_n;
1399
1400 return 0;
1401}
1402
dd267776
BP		 1403static int config_rebootsignal(const char *key, const char *value,
1404 struct lxc_conf *lxc_conf)
1405{
1406 int sig_n = sig_parse(value);
1407
1408 if (sig_n < 0)
1409 return -1;
1410 lxc_conf->rebootsignal = sig_n;
1411
1412 return 0;
1413}
1414
a84b9932
AV		 1415static int config_stopsignal(const char *key, const char *value,
1416 struct lxc_conf *lxc_conf)
1417{
1418 int sig_n = sig_parse(value);
1419
1420 if (sig_n < 0)
1421 return -1;
1422 lxc_conf->stopsignal = sig_n;
1423
1424 return 0;
1425}
1426
12a50cc6
DE		 1427static int config_cgroup(const char *key, const char *value,
1428 struct lxc_conf *lxc_conf)
576f946d 1429{
1430 char *token = "lxc.cgroup.";
1431 char *subkey;
bf83c5b9
MS		 1432 struct lxc_list *cglist = NULL;
1433 struct lxc_cgroup *cgelem = NULL;
576f946d 1434
7d0eb87e
SH		 1435 if (!value || strlen(value) == 0)
1436 return lxc_clear_cgroups(lxc_conf, key);
1437
576f946d 1438 subkey = strstr(key, token);
1439
1440 if (!subkey)
1441 return -1;
1442
1443 if (!strlen(subkey))
1444 return -1;
1445
1446 if (strlen(subkey) == strlen(token))
1447 return -1;
a871ff6b 1448
576f946d 1449 subkey += strlen(token);
1450
1451 cglist = malloc(sizeof(*cglist));
1452 if (!cglist)
bf83c5b9 1453 goto out;
576f946d 1454
1455 cgelem = malloc(sizeof(*cgelem));
bf83c5b9
MS		 1456 if (!cgelem)
1457 goto out;
1458 memset(cgelem, 0, sizeof(*cgelem));
576f946d 1459
1460 cgelem->subsystem = strdup(subkey);
1461 cgelem->value = strdup(value);
bf83c5b9
MS		 1462
1463 if (!cgelem->subsystem || !cgelem->value)
1464 goto out;
1465
576f946d 1466 cglist->elem = cgelem;
1467
94d12f0a 1468 lxc_list_add_tail(&lxc_conf->cgroup, cglist);
576f946d 1469
1470 return 0;
bf83c5b9
MS		 1471
1472out:
f10fad2f 1473 free(cglist);
bf83c5b9
MS		 1474
1475 if (cgelem) {
f10fad2f 1476 free(cgelem->subsystem);
bf83c5b9 1477
f10fad2f 1478 free(cgelem->value);
bf83c5b9
MS		 1479
1480 free(cgelem);
1481 }
1482
1483 return -1;
576f946d 1484}
1485
f6d3e3e4
SH		 1486static int config_idmap(const char *key, const char *value, struct lxc_conf *lxc_conf)
1487{
1488 char *token = "lxc.id_map";
1489 char *subkey;
1490 struct lxc_list *idmaplist = NULL;
1491 struct id_map *idmap = NULL;
251d0d2a 1492 unsigned long hostid, nsid, range;
f6d3e3e4
SH		 1493 char type;
1494 int ret;
1495
7d0eb87e
SH		 1496 if (!value || strlen(value) == 0)
1497 return lxc_clear_idmaps(lxc_conf);
1498
f6d3e3e4
SH		 1499 subkey = strstr(key, token);
1500
1501 if (!subkey)
1502 return -1;
1503
1504 if (!strlen(subkey))
1505 return -1;
1506
1507 idmaplist = malloc(sizeof(*idmaplist));
1508 if (!idmaplist)
1509 goto out;
1510
1511 idmap = malloc(sizeof(*idmap));
1512 if (!idmap)
1513 goto out;
1514 memset(idmap, 0, sizeof(*idmap));
1515
251d0d2a 1516 ret = sscanf(value, "%c %lu %lu %lu", &type, &nsid, &hostid, &range);
f6d3e3e4
SH		 1517 if (ret != 4)
1518 goto out;
7e60c3f0 1519
251d0d2a 1520 INFO("read uid map: type %c nsid %lu hostid %lu range %lu", type, nsid, hostid, range);
ac7725e7 1521 if (type == 'u')
f6d3e3e4 1522 idmap->idtype = ID_TYPE_UID;
ac7725e7 1523 else if (type == 'g')
f6d3e3e4
SH		 1524 idmap->idtype = ID_TYPE_GID;
1525 else
1526 goto out;
7e60c3f0 1527
f6d3e3e4
SH		 1528 idmap->hostid = hostid;
1529 idmap->nsid = nsid;
1530 idmap->range = range;
1531
7e60c3f0
SG		 1532 idmaplist->elem = idmap;
1533 lxc_list_add_tail(&lxc_conf->id_map, idmaplist);
1534
f6d3e3e4
SH		 1535 return 0;
1536
1537out:
f10fad2f 1538 free(idmaplist);
f6d3e3e4
SH		 1539
1540 if (idmap) {
1541 free(idmap);
1542 }
1543
1544 return -1;
1545}
1546
d95db067
DE		 1547static int config_fstab(const char *key, const char *value,
1548 struct lxc_conf *lxc_conf)
1549{
d9192f5d
SH		 1550 if (!value || strlen(value) == 0)
1551 return -1;
6d03d92a 1552 return config_path_item(&lxc_conf->fstab, value);
d95db067
DE		 1553}
1554
368bbc02
CS		 1555static int config_mount_auto(const char *key, const char *value,
1556 struct lxc_conf *lxc_conf)
1557{
1558 char *autos, *autoptr, *sptr, *token;
b06b8511 1559 static struct { const char *token; int mask; int flag; } allowed_auto_mounts[] = {
0769b82a
CS		 1560 { "proc", LXC_AUTO_PROC_MASK, LXC_AUTO_PROC_MIXED },
1561 { "proc:mixed", LXC_AUTO_PROC_MASK, LXC_AUTO_PROC_MIXED },
1562 { "proc:rw", LXC_AUTO_PROC_MASK, LXC_AUTO_PROC_RW },
f24a52d5 1563 { "sys", LXC_AUTO_SYS_MASK, LXC_AUTO_SYS_MIXED },
0769b82a 1564 { "sys:ro", LXC_AUTO_SYS_MASK, LXC_AUTO_SYS_RO },
f24a52d5 1565 { "sys:mixed", LXC_AUTO_SYS_MASK, LXC_AUTO_SYS_MIXED },
0769b82a
CS		 1566 { "sys:rw", LXC_AUTO_SYS_MASK, LXC_AUTO_SYS_RW },
1567 { "cgroup", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_NOSPEC },
1568 { "cgroup:mixed", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_MIXED },
1569 { "cgroup:ro", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_RO },
1570 { "cgroup:rw", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_RW },
1571 { "cgroup-full", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_FULL_NOSPEC },
1572 { "cgroup-full:mixed", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_FULL_MIXED },
1573 { "cgroup-full:ro", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_FULL_RO },
1574 { "cgroup-full:rw", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_FULL_RW },
70f55bfd 1575 /* NB: For adding anything that is just a single on/off, but has
b06b8511
CS		 1576 * no options: keep mask and flag identical and just define the
1577 * enum value as an unused bit so far
1578 */
368bbc02
CS		 1579 { NULL, 0 }
1580 };
1581 int i;
1582 int ret = -1;
1583
d9192f5d
SH		 1584 if (!value || strlen(value) == 0) {
1585 lxc_conf->auto_mounts = 0;
1586 return 0;
1587 }
368bbc02
CS		 1588
1589 autos = strdup(value);
1590 if (!autos) {
1591 SYSERROR("failed to dup '%s'", value);
1592 return -1;
1593 }
1594
1595 for (autoptr = autos; ; autoptr = NULL) {
d028235d
SG		 1596 token = strtok_r(autoptr, " \t", &sptr);
1597 if (!token) {
368bbc02 1598 ret = 0;
d028235d 1599 break;
368bbc02
CS		 1600 }
1601
1602 for (i = 0; allowed_auto_mounts[i].token; i++) {
1603 if (!strcmp(allowed_auto_mounts[i].token, token))
1604 break;
1605 }
1606
1607 if (!allowed_auto_mounts[i].token) {
1608 ERROR("Invalid filesystem to automount: %s", token);
1609 break;
1610 }
1611
b06b8511 1612 lxc_conf->auto_mounts &= ~allowed_auto_mounts[i].mask;
368bbc02 1613 lxc_conf->auto_mounts |= allowed_auto_mounts[i].flag;
d028235d 1614 }
368bbc02
CS		 1615
1616 free(autos);
1617
1618 return ret;
1619}
1620
12a50cc6
DE		 1621static int config_mount(const char *key, const char *value,
1622 struct lxc_conf *lxc_conf)
e7938e9e 1623{
e7938e9e
MN		 1624 char *mntelem;
1625 struct lxc_list *mntlist;
1626
d9192f5d
SH		 1627 if (!value || strlen(value) == 0)
1628 return lxc_clear_mount_entries(lxc_conf);
e7938e9e
MN		 1629
1630 mntlist = malloc(sizeof(*mntlist));
1631 if (!mntlist)
1632 return -1;
1633
1634 mntelem = strdup(value);
00b6be44
SH		 1635 if (!mntelem) {
1636 free(mntlist);
bf83c5b9 1637 return -1;
00b6be44 1638 }
e7938e9e
MN		 1639 mntlist->elem = mntelem;
1640
1641 lxc_list_add_tail(&lxc_conf->mount_list, mntlist);
1642
1643 return 0;
1644}
1645
1fb86a7c
SH		 1646static int config_cap_keep(const char *key, const char *value,
1647 struct lxc_conf *lxc_conf)
1648{
1649 char *keepcaps, *keepptr, *sptr, *token;
1650 struct lxc_list *keeplist;
1651 int ret = -1;
1652
1653 if (!strlen(value))
7d0eb87e 1654 return lxc_clear_config_keepcaps(lxc_conf);
1fb86a7c
SH		 1655
1656 keepcaps = strdup(value);
1657 if (!keepcaps) {
1658 SYSERROR("failed to dup '%s'", value);
1659 return -1;
1660 }
1661
1662 /* in case several capability keep is specified in a single line
1663 * split these caps in a single element for the list */
1664 for (keepptr = keepcaps;;keepptr = NULL) {
d028235d
SG		 1665 token = strtok_r(keepptr, " \t", &sptr);
1666 if (!token) {
1fb86a7c 1667 ret = 0;
d028235d 1668 break;
1fb86a7c
SH		 1669 }
1670
7035407c
DE		 1671 if (!strcmp(token, "none"))
1672 lxc_clear_config_keepcaps(lxc_conf);
1673
1fb86a7c
SH		 1674 keeplist = malloc(sizeof(*keeplist));
1675 if (!keeplist) {
1676 SYSERROR("failed to allocate keepcap list");
1677 break;
1678 }
1679
1680 keeplist->elem = strdup(token);
1681 if (!keeplist->elem) {
1682 SYSERROR("failed to dup '%s'", token);
1683 free(keeplist);
1684 break;
1685 }
1686
1687 lxc_list_add_tail(&lxc_conf->keepcaps, keeplist);
d028235d 1688 }
1fb86a7c
SH		 1689
1690 free(keepcaps);
1691
1692 return ret;
1693}
1694
12a50cc6 1695static int config_cap_drop(const char *key, const char *value,
81810dd1
DL		 1696 struct lxc_conf *lxc_conf)
1697{
d95db067 1698 char *dropcaps, *dropptr, *sptr, *token;
81810dd1
DL		 1699 struct lxc_list *droplist;
1700 int ret = -1;
1701
1702 if (!strlen(value))
7d0eb87e 1703 return lxc_clear_config_caps(lxc_conf);
81810dd1
DL		 1704
1705 dropcaps = strdup(value);
1706 if (!dropcaps) {
1707 SYSERROR("failed to dup '%s'", value);
1708 return -1;
1709 }
1710
1711 /* in case several capability drop is specified in a single line
1712 * split these caps in a single element for the list */
d95db067 1713 for (dropptr = dropcaps;;dropptr = NULL) {
d028235d
SG		 1714 token = strtok_r(dropptr, " \t", &sptr);
1715 if (!token) {
81810dd1 1716 ret = 0;
d028235d 1717 break;
81810dd1 1718 }
81810dd1
DL		 1719
1720 droplist = malloc(sizeof(*droplist));
1721 if (!droplist) {
1722 SYSERROR("failed to allocate drop list");
1723 break;
1724 }
1725
1726 droplist->elem = strdup(token);
1727 if (!droplist->elem) {
1728 SYSERROR("failed to dup '%s'", token);
1729 free(droplist);
1730 break;
1731 }
1732
1733 lxc_list_add_tail(&lxc_conf->caps, droplist);
d028235d 1734 }
81810dd1
DL		 1735
1736 free(dropcaps);
1737
1738 return ret;
1739}
1740
12a50cc6 1741static int config_console(const char *key, const char *value,
28a4b0e5
DL		 1742 struct lxc_conf *lxc_conf)
1743{
6d03d92a 1744 return config_path_item(&lxc_conf->console.path, value);
28a4b0e5
DL		 1745}
1746
96f15ca1
SH		 1747static int config_console_logfile(const char *key, const char *value,
1748 struct lxc_conf *lxc_conf)
1749{
1750 return config_path_item(&lxc_conf->console.log_path, value);
1751}
1752
e6744e9b
SH		 1753/*
1754 * If we find a lxc.network.hwaddr in the original config file,
1755 * we expand it in the unexpanded_config, so that after a save_config
1756 * we store the hwaddr for re-use.
1757 * This is only called when reading the config file, not when executing
1758 * a lxc.include.
1759 * 'x' and 'X' are substituted in-place.
1760 */
1761static void update_hwaddr(const char *line)
1762{
1763 char *p;
1764
1765 line += lxc_char_left_gc(line, strlen(line));
1766 if (line[0] == '#')
1767 return;
1768 if (strncmp(line, "lxc.network.hwaddr", 18) != 0)
1769 return;
1770 p = strchr(line, '=');
1771 if (!p)
1772 return; // let config_network_hwaddr raise the error
1773 p++;
1774 while (isblank(*p))
1775 p++;
1776 if (!*p)
1777 return;
1778
1779 rand_complete_hwaddr(p);
1780}
1781
6b0d5538 1782int append_unexp_config_line(const char *line, struct lxc_conf *conf)
f979ac15 1783{
6b0d5538 1784 size_t len = conf->unexpanded_len, linelen = strlen(line);
f979ac15 1785
e6744e9b
SH		 1786 update_hwaddr(line);
1787
6b0d5538
SH		 1788 while (conf->unexpanded_alloced <= len + linelen + 2) {
1789 char *tmp = realloc(conf->unexpanded_config, conf->unexpanded_alloced + 1024);
1790 if (!tmp)
1791 return -1;
1792 if (!conf->unexpanded_config)
1793 *tmp = '\0';
1794 conf->unexpanded_config = tmp;
1795 conf->unexpanded_alloced += 1024;
1796 }
1797 strcat(conf->unexpanded_config, line);
1798 conf->unexpanded_len += linelen;
1799 if (line[linelen-1] != '\n') {
1800 strcat(conf->unexpanded_config, "\n");
1801 conf->unexpanded_len++;
f979ac15 1802 }
f979ac15
SH		 1803 return 0;
1804}
1805
e1daebd9
SH		 1806static int do_includedir(const char *dirp, struct lxc_conf *lxc_conf)
1807{
74f96976 1808 struct dirent *direntp;
e1daebd9
SH		 1809 DIR *dir;
1810 char path[MAXPATHLEN];
1811 int ret = -1, len;
1812
1813 dir = opendir(dirp);
1814 if (!dir) {
1815 SYSERROR("failed to open '%s'", dirp);
1816 return -1;
1817 }
1818
74f96976 1819 while ((direntp = readdir(dir))) {
e1daebd9
SH		 1820 const char *fnam;
1821 if (!direntp)
1822 break;
1823
1824 fnam = direntp->d_name;
1825 if (!strcmp(fnam, "."))
1826 continue;
1827
1828 if (!strcmp(fnam, ".."))
1829 continue;
1830
1831 len = strlen(fnam);
1832 if (len < 6 || strncmp(fnam+len-5, ".conf", 5) != 0)
1833 continue;
1834 len = snprintf(path, MAXPATHLEN, "%s/%s", dirp, fnam);
1835 if (len < 0 || len >= MAXPATHLEN) {
1836 ERROR("lxc.include filename too long under '%s'", dirp);
1837 ret = -1;
1838 goto out;
1839 }
1840
1841 ret = lxc_config_read(path, lxc_conf, true);
1842 if (ret < 0)
1843 goto out;
1844 }
1845 ret = 0;
1846
1847out:
1848 if (closedir(dir))
1849 WARN("lxc.include dir: failed to close directory");
1850
1851 return ret;
1852}
1853
12a50cc6 1854static int config_includefile(const char *key, const char *value,
09ad6246
SH		 1855 struct lxc_conf *lxc_conf)
1856{
e1daebd9
SH		 1857 if (is_dir(value))
1858 return do_includedir(value, lxc_conf);
1859
6b0d5538 1860 return lxc_config_read(value, lxc_conf, true);
09ad6246
SH		 1861}
1862
12a50cc6
DE		 1863static int config_rootfs(const char *key, const char *value,
1864 struct lxc_conf *lxc_conf)
c2cc9f0a 1865{
6d03d92a 1866 return config_path_item(&lxc_conf->rootfs.path, value);
c2cc9f0a 1867}
1868
12a50cc6
DE		 1869static int config_rootfs_mount(const char *key, const char *value,
1870 struct lxc_conf *lxc_conf)
23b7ea69 1871{
6d03d92a 1872 return config_path_item(&lxc_conf->rootfs.mount, value);
23b7ea69
DL		 1873}
1874
a17b1e65
SG		 1875static int config_rootfs_options(const char *key, const char *value,
1876 struct lxc_conf *lxc_conf)
1877{
1878 return config_string_item(&lxc_conf->rootfs.options, value);
1879}
1880
327a1e78 1881static int config_rootfs_backend(const char *key, const char *value,
bfd77214
SH		 1882 struct lxc_conf *lxc_conf)
1883{
6a21d4ae
SH		 1884 if (strlen(value) == 0) {
1885 free(lxc_conf->rootfs.bdev_type);
1886 lxc_conf->rootfs.bdev_type = NULL;
1887 }
bfd77214 1888 if (!is_valid_bdev_type(value)) {
327a1e78 1889 ERROR("Bad rootfs.backend: '%s'", value);
bfd77214
SH		 1890 return -1;
1891 }
1892
b3b8c97f 1893 return config_string_item(&lxc_conf->rootfs.bdev_type, value);
bfd77214
SH		 1894}
1895
12a50cc6
DE		 1896static int config_pivotdir(const char *key, const char *value,
1897 struct lxc_conf *lxc_conf)
bf601689 1898{
2d489f9e 1899 WARN("lxc.pivotdir is ignored. It will soon become an error.");
59bb8698 1900 return 0;
bf601689
MH		 1901}
1902
12a50cc6
DE		 1903static int config_utsname(const char *key, const char *value,
1904 struct lxc_conf *lxc_conf)
c2cc9f0a 1905{
1906 struct utsname *utsname;
1907
1908 utsname = malloc(sizeof(*utsname));
1909 if (!utsname) {
36eb9bde 1910 SYSERROR("failed to allocate memory");
c2cc9f0a 1911 return -1;
1912 }
1913
1914 if (strlen(value) >= sizeof(utsname->nodename)) {
36eb9bde 1915 ERROR("node name '%s' is too long",
16e29c91 1916 value);
b6f24d54 1917 free(utsname);
c2cc9f0a 1918 return -1;
1919 }
1920
1921 strcpy(utsname->nodename, value);
f10fad2f 1922 free(lxc_conf->utsname);
c2cc9f0a 1923 lxc_conf->utsname = utsname;
1924
1925 return 0;
1926}
1927
6b0d5538
SH		 1928struct parse_line_conf {
1929 struct lxc_conf *conf;
1930 bool from_include;
1931};
4184c3e1 1932
7a7ff0c6 1933static int parse_line(char *buffer, void *data)
c2cc9f0a 1934{
72d0e1cb 1935 struct lxc_config_t *config;
81192358 1936 char *line, *linep;
c2cc9f0a 1937 char *dot;
1938 char *key;
1939 char *value;
476d4cf1 1940 int ret = 0;
6b0d5538 1941 struct parse_line_conf *plc = data;
c2cc9f0a 1942
91480a0f 1943 if (lxc_is_line_empty(buffer))
c2cc9f0a 1944 return 0;
1945
81192358
DL		 1946 /* we have to dup the buffer otherwise, at the re-exec for
1947 * reboot we modified the original string on the stack by
1948 * replacing '=' by '\0' below
91480a0f 1949 */
81192358 1950 linep = line = strdup(buffer);
91480a0f
DL		 1951 if (!line) {
1952 SYSERROR("failed to allocate memory for '%s'", buffer);
81192358 1953 return -1;
91480a0f
DL		 1954 }
1955
6b0d5538
SH		 1956 if (!plc->from_include)
1957 if ((ret = append_unexp_config_line(line, plc->conf)))
1958 goto out;
1959
b2718c72 1960 line += lxc_char_left_gc(line, strlen(line));
476d4cf1 1961
4184c3e1
SH		 1962 /* ignore comments */
1963 if (line[0] == '#')
91480a0f 1964 goto out;
476d4cf1 1965
6b0d5538
SH		 1966 /* martian option - don't add it to the config itself */
1967 if (strncmp(line, "lxc.", 4))
4184c3e1 1968 goto out;
4184c3e1 1969
476d4cf1 1970 ret = -1;
c2cc9f0a 1971
b2718c72 1972 dot = strstr(line, "=");
c2cc9f0a 1973 if (!dot) {
36eb9bde 1974 ERROR("invalid configuration line: %s", line);
91480a0f 1975 goto out;
c2cc9f0a 1976 }
a871ff6b 1977
c2cc9f0a 1978 *dot = '\0';
1979 value = dot + 1;
1980
b2718c72 1981 key = line;
1982 key[lxc_char_right_gc(key, strlen(key))] = '\0';
c2cc9f0a 1983
b2718c72 1984 value += lxc_char_left_gc(value, strlen(value));
1985 value[lxc_char_right_gc(value, strlen(value))] = '\0';
c2cc9f0a 1986
bd878dee
SB		 1987 if (*value == '\'' || *value == '\"') {
1988 size_t len = strlen(value);
1989 if (len > 1 && value[len-1] == *value) {
1990 value[len-1] = '\0';
1991 value++;
1992 }
1993 }
1994
72d0e1cb 1995 config = lxc_getconfig(key);
c2cc9f0a 1996 if (!config) {
6e1d9b94 1997 ERROR("unknown key %s", key);
91480a0f 1998 goto out;
c2cc9f0a 1999 }
2000
6b0d5538 2001 ret = config->cb(key, value, plc->conf);
91480a0f
DL		 2002
2003out:
81192358 2004 free(linep);
91480a0f 2005 return ret;
c2cc9f0a 2006}
2007
74a3920a 2008static int lxc_config_readline(char *buffer, struct lxc_conf *conf)
af5b0155 2009{
6b0d5538
SH		 2010 struct parse_line_conf c;
2011
2012 c.conf = conf;
2013 c.from_include = false;
2014
2015 return parse_line(buffer, &c);
af5b0155
CLG		 2016}
2017
6b0d5538 2018int lxc_config_read(const char *file, struct lxc_conf *conf, bool from_include)
c2cc9f0a 2019{
6b0d5538
SH		 2020 struct parse_line_conf c;
2021
2022 c.conf = conf;
2023 c.from_include = from_include;
f979ac15 2024
f3ca99fd
SH		 2025 if( access(file, R_OK) == -1 ) {
2026 return -1;
2027 }
6b0d5538 2028
f7bee6c6 2029 /* Catch only the top level config file name in the structure */
76d0127f
CB		 2030 if(!conf->rcfile)
2031 conf->rcfile = strdup(file);
f979ac15 2032
6b0d5538 2033 return lxc_file_for_each_line(file, parse_line, &c);
c2cc9f0a 2034}
62e46035
CLG		 2035
2036int lxc_config_define_add(struct lxc_list *defines, char* arg)
2037{
2038 struct lxc_list *dent;
2039
2040 dent = malloc(sizeof(struct lxc_list));
2041 if (!dent)
2042 return -1;
2043
2044 dent->elem = arg;
2045 lxc_list_add_tail(defines, dent);
2046 return 0;
2047}
2048
226a18d6 2049int lxc_config_define_load(struct lxc_list *defines, struct lxc_conf *conf)
62e46035 2050{
9ebb03ad 2051 struct lxc_list *it,*next;
62e46035
CLG		 2052 int ret = 0;
2053
2054 lxc_list_for_each(it, defines) {
2055 ret = lxc_config_readline(it->elem, conf);
2056 if (ret)
2057 break;
2058 }
2059
9ebb03ad 2060 lxc_list_for_each_safe(it, defines, next) {
62e46035
CLG		 2061 lxc_list_del(it);
2062 free(it);
2063 }
2064
2065 return ret;
2066}
525f0002
CS		 2067
2068signed long lxc_config_parse_arch(const char *arch)
2069{
6ff05e18 2070 #if HAVE_SYS_PERSONALITY_H
525f0002
CS		 2071 struct per_name {
2072 char *name;
2073 unsigned long per;
bb8d8207 2074 } pername[] = {
525f0002 2075 { "x86", PER_LINUX32 },
bb8d8207
DE		 2076 { "linux32", PER_LINUX32 },
2077 { "i386", PER_LINUX32 },
2078 { "i486", PER_LINUX32 },
2079 { "i586", PER_LINUX32 },
525f0002 2080 { "i686", PER_LINUX32 },
bb8d8207 2081 { "athlon", PER_LINUX32 },
e319eb34
JC		 2082 { "mips", PER_LINUX32 },
2083 { "mipsel", PER_LINUX32 },
08245e8c
CB		 2084 { "ppc", PER_LINUX32 },
2085 { "arm", PER_LINUX32 },
2086 { "armv7l", PER_LINUX32 },
2087 { "armhf", PER_LINUX32 },
2088 { "armel", PER_LINUX32 },
2089 { "powerpc", PER_LINUX32 },
bb8d8207 2090 { "linux64", PER_LINUX },
525f0002
CS		 2091 { "x86_64", PER_LINUX },
2092 { "amd64", PER_LINUX },
e319eb34
JC		 2093 { "mips64", PER_LINUX },
2094 { "mips64el", PER_LINUX },
08245e8c
CB		 2095 { "ppc64", PER_LINUX },
2096 { "ppc64le", PER_LINUX },
2097 { "ppc64el", PER_LINUX },
2098 { "powerpc64", PER_LINUX },
2099 { "s390x", PER_LINUX },
2100 { "aarch64", PER_LINUX },
2101 { "arm64", PER_LINUX },
525f0002
CS		 2102 };
2103 size_t len = sizeof(pername) / sizeof(pername[0]);
2104
84760c11 2105 size_t i;
525f0002
CS		 2106
2107 for (i = 0; i < len; i++) {
2108 if (!strcmp(pername[i].name, arch))
2109 return pername[i].per;
2110 }
6ff05e18 2111 #endif
525f0002
CS		 2112
2113 return -1;
2114}
72d0e1cb 2115
4d69b293
NK		 2116int lxc_fill_elevated_privileges(char *flaglist, int *flags)
2117{
2118 char *token, *saveptr = NULL;
2119 int i, aflag;
2120 struct { const char *token; int flag; } all_privs[] = {
2121 { "CGROUP", LXC_ATTACH_MOVE_TO_CGROUP },
2122 { "CAP", LXC_ATTACH_DROP_CAPABILITIES },
2123 { "LSM", LXC_ATTACH_LSM_EXEC },
2124 { NULL, 0 }
2125 };
2126
2127 if (!flaglist) {
2128 /* for the sake of backward compatibility, drop all privileges
2129 if none is specified */
2130 for (i = 0; all_privs[i].token; i++) {
d028235d 2131 *flags |= all_privs[i].flag;
4d69b293
NK		 2132 }
2133 return 0;
2134 }
2135
2136 token = strtok_r(flaglist, "|", &saveptr);
2137 while (token) {
2138 aflag = -1;
2139 for (i = 0; all_privs[i].token; i++) {
2140 if (!strcmp(all_privs[i].token, token))
2141 aflag = all_privs[i].flag;
2142 }
2143 if (aflag < 0)
2144 return -1;
2145
2146 *flags |= aflag;
2147
2148 token = strtok_r(NULL, "|", &saveptr);
2149 }
2150 return 0;
2151}
2152
72d0e1cb
SG		 2153static int lxc_get_conf_int(struct lxc_conf *c, char *retv, int inlen, int v)
2154{
2155 if (!retv)
2156 inlen = 0;
2157 else
2158 memset(retv, 0, inlen);
2159 return snprintf(retv, inlen, "%d", v);
2160}
2161
2162static int lxc_get_arch_entry(struct lxc_conf *c, char *retv, int inlen)
2163{
6ff05e18 2164 int fulllen = 0;
72d0e1cb
SG		 2165
2166 if (!retv)
2167 inlen = 0;
2168 else
2169 memset(retv, 0, inlen);
2170
6ff05e18
SG		 2171 #if HAVE_SYS_PERSONALITY_H
2172 int len = 0;
2173
72d0e1cb 2174 switch(c->personality) {
14622799 2175 case PER_LINUX32: strprint(retv, inlen, "i686"); break;
72d0e1cb
SG		 2176 case PER_LINUX: strprint(retv, inlen, "x86_64"); break;
2177 default: break;
2178 }
6ff05e18 2179 #endif
72d0e1cb
SG		 2180
2181 return fulllen;
2182}
2183
2184/*
2185 * If you ask for a specific cgroup value, i.e. lxc.cgroup.devices.list,
2186 * then just the value(s) will be printed. Since there still could be
2187 * more than one, it is newline-separated.
2188 * (Maybe that's ambigous, since some values, i.e. devices.list, will
2189 * already have newlines?)
2190 * If you ask for 'lxc.cgroup", then all cgroup entries will be printed,
2191 * in 'lxc.cgroup.subsystem.key = value' format.
2192 */
12a50cc6
DE		 2193static int lxc_get_cgroup_entry(struct lxc_conf *c, char *retv, int inlen,
2194 const char *key)
72d0e1cb
SG		 2195{
2196 int fulllen = 0, len;
2197 int all = 0;
2198 struct lxc_list *it;
2199
2200 if (!retv)
2201 inlen = 0;
2202 else
2203 memset(retv, 0, inlen);
2204
2205 if (strcmp(key, "all") == 0)
2206 all = 1;
2207
2208 lxc_list_for_each(it, &c->cgroup) {
2209 struct lxc_cgroup *cg = it->elem;
2210 if (all) {
2211 strprint(retv, inlen, "lxc.cgroup.%s = %s\n", cg->subsystem, cg->value);
2212 } else if (strcmp(cg->subsystem, key) == 0) {
2213 strprint(retv, inlen, "%s\n", cg->value);
2214 }
2215 }
2216 return fulllen;
2217}
2218
12a50cc6
DE		 2219static int lxc_get_item_hooks(struct lxc_conf *c, char *retv, int inlen,
2220 const char *key)
72d0e1cb
SG		 2221{
2222 char *subkey;
2223 int len, fulllen = 0, found = -1;
2224 struct lxc_list *it;
2225 int i;
2226
2227 /* "lxc.hook.mount" */
46cd2845
PL		 2228 subkey = strchr(key, '.');
2229 if (subkey) subkey = strchr(subkey+1, '.');
72d0e1cb
SG		 2230 if (!subkey)
2231 return -1;
2232 subkey++;
2233 if (!*subkey)
2234 return -1;
2235 for (i=0; i<NUM_LXC_HOOKS; i++) {
2236 if (strcmp(lxchook_names[i], subkey) == 0) {
2237 found=i;
2238 break;
2239 }
2240 }
2241 if (found == -1)
2242 return -1;
2243
2244 if (!retv)
2245 inlen = 0;
2246 else
2247 memset(retv, 0, inlen);
2248
2249 lxc_list_for_each(it, &c->hooks[found]) {
2250 strprint(retv, inlen, "%s\n", (char *)it->elem);
2251 }
2252 return fulllen;
2253}
2254
ee1e7aa0
SG		 2255static int lxc_get_item_groups(struct lxc_conf *c, char *retv, int inlen)
2256{
2257 int len, fulllen = 0;
2258 struct lxc_list *it;
2259
2260 if (!retv)
2261 inlen = 0;
2262 else
2263 memset(retv, 0, inlen);
2264
2265 lxc_list_for_each(it, &c->groups) {
2266 strprint(retv, inlen, "%s\n", (char *)it->elem);
2267 }
2268 return fulllen;
2269}
2270
ab799c0b
SG		 2271static int lxc_get_item_environment(struct lxc_conf *c, char *retv, int inlen)
2272{
2273 int len, fulllen = 0;
2274 struct lxc_list *it;
2275
2276 if (!retv)
2277 inlen = 0;
2278 else
2279 memset(retv, 0, inlen);
2280
2281 lxc_list_for_each(it, &c->environment) {
2282 strprint(retv, inlen, "%s\n", (char *)it->elem);
2283 }
2284 return fulllen;
2285}
2286
72d0e1cb
SG		 2287static int lxc_get_item_cap_drop(struct lxc_conf *c, char *retv, int inlen)
2288{
2289 int len, fulllen = 0;
2290 struct lxc_list *it;
2291
2292 if (!retv)
2293 inlen = 0;
2294 else
2295 memset(retv, 0, inlen);
2296
2297 lxc_list_for_each(it, &c->caps) {
2298 strprint(retv, inlen, "%s\n", (char *)it->elem);
2299 }
2300 return fulllen;
2301}
2302
1fb86a7c
SH		 2303static int lxc_get_item_cap_keep(struct lxc_conf *c, char *retv, int inlen)
2304{
2305 int len, fulllen = 0;
2306 struct lxc_list *it;
2307
2308 if (!retv)
2309 inlen = 0;
2310 else
2311 memset(retv, 0, inlen);
2312
2313 lxc_list_for_each(it, &c->keepcaps) {
2314 strprint(retv, inlen, "%s\n", (char *)it->elem);
2315 }
2316 return fulllen;
2317}
2318
72d0e1cb
SG		 2319static int lxc_get_mount_entries(struct lxc_conf *c, char *retv, int inlen)
2320{
2321 int len, fulllen = 0;
2322 struct lxc_list *it;
2323
2324 if (!retv)
2325 inlen = 0;
2326 else
2327 memset(retv, 0, inlen);
2328
2329 lxc_list_for_each(it, &c->mount_list) {
2330 strprint(retv, inlen, "%s\n", (char *)it->elem);
2331 }
2332 return fulllen;
2333}
2334
b099e9e9
SH		 2335static int lxc_get_auto_mounts(struct lxc_conf *c, char *retv, int inlen)
2336{
2337 int len, fulllen = 0;
0769b82a 2338 const char *sep = "";
b099e9e9
SH		 2339
2340 if (!retv)
2341 inlen = 0;
2342 else
2343 memset(retv, 0, inlen);
2344
2345 if (!(c->auto_mounts & LXC_AUTO_ALL_MASK))
2346 return 0;
2347
2348 switch (c->auto_mounts & LXC_AUTO_PROC_MASK) {
0769b82a
CS		 2349 case LXC_AUTO_PROC_MIXED: strprint(retv, inlen, "%sproc:mixed", sep); sep = " "; break;
2350 case LXC_AUTO_PROC_RW: strprint(retv, inlen, "%sproc:rw", sep); sep = " "; break;
b099e9e9
SH		 2351 default: break;
2352 }
2353 switch (c->auto_mounts & LXC_AUTO_SYS_MASK) {
0769b82a
CS		 2354 case LXC_AUTO_SYS_RO: strprint(retv, inlen, "%ssys:ro", sep); sep = " "; break;
2355 case LXC_AUTO_SYS_RW: strprint(retv, inlen, "%ssys:rw", sep); sep = " "; break;
10f27710 2356 case LXC_AUTO_SYS_MIXED: strprint(retv, inlen, "%ssys:mixed", sep); sep = " "; break;
b099e9e9
SH		 2357 default: break;
2358 }
2359 switch (c->auto_mounts & LXC_AUTO_CGROUP_MASK) {
0769b82a
CS		 2360 case LXC_AUTO_CGROUP_NOSPEC: strprint(retv, inlen, "%scgroup", sep); sep = " "; break;
2361 case LXC_AUTO_CGROUP_MIXED: strprint(retv, inlen, "%scgroup:mixed", sep); sep = " "; break;
2362 case LXC_AUTO_CGROUP_RO: strprint(retv, inlen, "%scgroup:ro", sep); sep = " "; break;
2363 case LXC_AUTO_CGROUP_RW: strprint(retv, inlen, "%scgroup:rw", sep); sep = " "; break;
2364 case LXC_AUTO_CGROUP_FULL_NOSPEC: strprint(retv, inlen, "%scgroup-full", sep); sep = " "; break;
2365 case LXC_AUTO_CGROUP_FULL_MIXED: strprint(retv, inlen, "%scgroup-full:mixed", sep); sep = " "; break;
2366 case LXC_AUTO_CGROUP_FULL_RO: strprint(retv, inlen, "%scgroup-full:ro", sep); sep = " "; break;
2367 case LXC_AUTO_CGROUP_FULL_RW: strprint(retv, inlen, "%scgroup-full:rw", sep); sep = " "; break;
b099e9e9
SH		 2368 default: break;
2369 }
0769b82a 2370
b099e9e9
SH		 2371 return fulllen;
2372}
2373
72d0e1cb
SG		 2374/*
2375 * lxc.network.0.XXX, where XXX can be: name, type, link, flags, type,
8fc8295a 2376 * macvlan.mode, veth.pair, vlan, ipv4, ipv6, script.up, hwaddr, mtu,
9eaf8a59 2377 * ipv4.gateway, ipv6.gateway. ipvX.gateway can return 'auto' instead
72d0e1cb
SG		 2378 * of an address. ipv4 and ipv6 return lists (newline-separated).
2379 * things like veth.pair return '' if invalid (i.e. if called for vlan
2380 * type).
2381 */
12a50cc6
DE		 2382static int lxc_get_item_nic(struct lxc_conf *c, char *retv, int inlen,
2383 const char *key)
72d0e1cb
SG		 2384{
2385 char *p1;
fe88b9d2 2386 int len, fulllen = 0;
72d0e1cb
SG		 2387 struct lxc_netdev *netdev;
2388
2389 if (!retv)
2390 inlen = 0;
2391 else
2392 memset(retv, 0, inlen);
2393
46cd2845 2394 p1 = strchr(key, '.');
72d0e1cb
SG		 2395 if (!p1 || *(p1+1) == '\0') return -1;
2396 p1++;
2397
2398 netdev = get_netdev_from_key(key, &c->network);
2399 if (!netdev)
2400 return -1;
2401 if (strcmp(p1, "name") == 0) {
2402 if (netdev->name)
2403 strprint(retv, inlen, "%s", netdev->name);
2404 } else if (strcmp(p1, "type") == 0) {
2405 strprint(retv, inlen, "%s", lxc_net_type_to_str(netdev->type));
2406 } else if (strcmp(p1, "link") == 0) {
2407 if (netdev->link)
2408 strprint(retv, inlen, "%s", netdev->link);
2409 } else if (strcmp(p1, "flags") == 0) {
2410 if (netdev->flags & IFF_UP)
2411 strprint(retv, inlen, "up");
8fc8295a 2412 } else if (strcmp(p1, "script.up") == 0) {
72d0e1cb
SG		 2413 if (netdev->upscript)
2414 strprint(retv, inlen, "%s", netdev->upscript);
8fc8295a
DE		 2415 } else if (strcmp(p1, "script.down") == 0) {
2416 if (netdev->downscript)
2417 strprint(retv, inlen, "%s", netdev->downscript);
72d0e1cb
SG		 2418 } else if (strcmp(p1, "hwaddr") == 0) {
2419 if (netdev->hwaddr)
2420 strprint(retv, inlen, "%s", netdev->hwaddr);
2421 } else if (strcmp(p1, "mtu") == 0) {
2422 if (netdev->mtu)
2423 strprint(retv, inlen, "%s", netdev->mtu);
2424 } else if (strcmp(p1, "macvlan.mode") == 0) {
2425 if (netdev->type == LXC_NET_MACVLAN) {
2426 const char *mode;
2427 switch (netdev->priv.macvlan_attr.mode) {
2428 case MACVLAN_MODE_PRIVATE: mode = "private"; break;
2429 case MACVLAN_MODE_VEPA: mode = "vepa"; break;
2430 case MACVLAN_MODE_BRIDGE: mode = "bridge"; break;
99854161 2431 case MACVLAN_MODE_PASSTHRU: mode = "passthru"; break;
72d0e1cb
SG		 2432 default: mode = "(invalid)"; break;
2433 }
2434 strprint(retv, inlen, "%s", mode);
2435 }
2436 } else if (strcmp(p1, "veth.pair") == 0) {
11029c02
DE		 2437 if (netdev->type == LXC_NET_VETH) {
2438 strprint(retv, inlen, "%s",
2439 netdev->priv.veth_attr.pair ?
2440 netdev->priv.veth_attr.pair :
2441 netdev->priv.veth_attr.veth1);
2442 }
72d0e1cb
SG		 2443 } else if (strcmp(p1, "vlan") == 0) {
2444 if (netdev->type == LXC_NET_VLAN) {
2445 strprint(retv, inlen, "%d", netdev->priv.vlan_attr.vid);
2446 }
9eaf8a59 2447 } else if (strcmp(p1, "ipv4.gateway") == 0) {
72d0e1cb
SG		 2448 if (netdev->ipv4_gateway_auto) {
2449 strprint(retv, inlen, "auto");
2450 } else if (netdev->ipv4_gateway) {
2451 char buf[INET_ADDRSTRLEN];
2452 inet_ntop(AF_INET, netdev->ipv4_gateway, buf, sizeof(buf));
2453 strprint(retv, inlen, "%s", buf);
2454 }
2455 } else if (strcmp(p1, "ipv4") == 0) {
2456 struct lxc_list *it2;
2457 lxc_list_for_each(it2, &netdev->ipv4) {
2458 struct lxc_inetdev *i = it2->elem;
2459 char buf[INET_ADDRSTRLEN];
2460 inet_ntop(AF_INET, &i->addr, buf, sizeof(buf));
28417b5a 2461 strprint(retv, inlen, "%s/%d\n", buf, i->prefix);
72d0e1cb 2462 }
9eaf8a59 2463 } else if (strcmp(p1, "ipv6.gateway") == 0) {
72d0e1cb
SG		 2464 if (netdev->ipv6_gateway_auto) {
2465 strprint(retv, inlen, "auto");
2466 } else if (netdev->ipv6_gateway) {
6afb165d
AN		 2467 char buf[INET6_ADDRSTRLEN];
2468 inet_ntop(AF_INET6, netdev->ipv6_gateway, buf, sizeof(buf));
72d0e1cb
SG		 2469 strprint(retv, inlen, "%s", buf);
2470 }
2471 } else if (strcmp(p1, "ipv6") == 0) {
2472 struct lxc_list *it2;
2473 lxc_list_for_each(it2, &netdev->ipv6) {
6afb165d
AN		 2474 struct lxc_inet6dev *i = it2->elem;
2475 char buf[INET6_ADDRSTRLEN];
72d0e1cb 2476 inet_ntop(AF_INET6, &i->addr, buf, sizeof(buf));
28417b5a 2477 strprint(retv, inlen, "%s/%d\n", buf, i->prefix);
72d0e1cb
SG		 2478 }
2479 }
2480 return fulllen;
2481}
2482
2483static int lxc_get_item_network(struct lxc_conf *c, char *retv, int inlen)
2484{
2485 int len, fulllen = 0;
2486 struct lxc_list *it;
2487
2488 if (!retv)
2489 inlen = 0;
2490 else
2491 memset(retv, 0, inlen);
2492
2493 lxc_list_for_each(it, &c->network) {
2494 struct lxc_netdev *n = it->elem;
2495 const char *t = lxc_net_type_to_str(n->type);
2496 strprint(retv, inlen, "%s\n", t ? t : "(invalid)");
2497 }
2498 return fulllen;
2499}
2500
12a50cc6
DE		 2501int lxc_get_config_item(struct lxc_conf *c, const char *key, char *retv,
2502 int inlen)
72d0e1cb 2503{
4a85ce2a 2504 const char *v = NULL;
72d0e1cb
SG		 2505
2506 if (strcmp(key, "lxc.mount.entry") == 0)
2507 return lxc_get_mount_entries(c, retv, inlen);
b099e9e9
SH		 2508 else if (strcmp(key, "lxc.mount.auto") == 0)
2509 return lxc_get_auto_mounts(c, retv, inlen);
72d0e1cb
SG		 2510 else if (strcmp(key, "lxc.mount") == 0)
2511 v = c->fstab;
2512 else if (strcmp(key, "lxc.tty") == 0)
2513 return lxc_get_conf_int(c, retv, inlen, c->tty);
2514 else if (strcmp(key, "lxc.pts") == 0)
2515 return lxc_get_conf_int(c, retv, inlen, c->pts);
2516 else if (strcmp(key, "lxc.devttydir") == 0)
2517 v = c->ttydir;
2518 else if (strcmp(key, "lxc.arch") == 0)
2519 return lxc_get_arch_entry(c, retv, inlen);
2520 else if (strcmp(key, "lxc.aa_profile") == 0)
fe4de9a6 2521 v = c->lsm_aa_profile;
7aff4f43
SH		 2522 else if (strcmp(key, "lxc.aa_allow_incomplete") == 0)
2523 return lxc_get_conf_int(c, retv, inlen, c->lsm_aa_allow_incomplete);
fe4de9a6
DE		 2524 else if (strcmp(key, "lxc.se_context") == 0)
2525 v = c->lsm_se_context;
4a85ce2a 2526 else if (strcmp(key, "lxc.logfile") == 0)
858377e4 2527 v = c->logfile;
4a85ce2a 2528 else if (strcmp(key, "lxc.loglevel") == 0)
858377e4 2529 v = lxc_log_priority_to_string(c->loglevel);
72d0e1cb
SG		 2530 else if (strcmp(key, "lxc.cgroup") == 0) // all cgroup info
2531 return lxc_get_cgroup_entry(c, retv, inlen, "all");
2532 else if (strncmp(key, "lxc.cgroup.", 11) == 0) // specific cgroup info
2533 return lxc_get_cgroup_entry(c, retv, inlen, key + 11);
2534 else if (strcmp(key, "lxc.utsname") == 0)
64fca455 2535 v = c->utsname ? c->utsname->nodename : NULL;
96f15ca1
SH		 2536 else if (strcmp(key, "lxc.console.logfile") == 0)
2537 v = c->console.log_path;
72d0e1cb
SG		 2538 else if (strcmp(key, "lxc.console") == 0)
2539 v = c->console.path;
2540 else if (strcmp(key, "lxc.rootfs.mount") == 0)
2541 v = c->rootfs.mount;
327a1e78 2542 else if (strcmp(key, "lxc.rootfs.backend") == 0)
6a21d4ae 2543 v = c->rootfs.bdev_type;
a17b1e65
SG		 2544 else if (strcmp(key, "lxc.rootfs.options") == 0)
2545 v = c->rootfs.options;
72d0e1cb
SG		 2546 else if (strcmp(key, "lxc.rootfs") == 0)
2547 v = c->rootfs.path;
72d0e1cb
SG		 2548 else if (strcmp(key, "lxc.cap.drop") == 0)
2549 return lxc_get_item_cap_drop(c, retv, inlen);
1fb86a7c
SH		 2550 else if (strcmp(key, "lxc.cap.keep") == 0)
2551 return lxc_get_item_cap_keep(c, retv, inlen);
72d0e1cb
SG		 2552 else if (strncmp(key, "lxc.hook", 8) == 0)
2553 return lxc_get_item_hooks(c, retv, inlen, key);
2554 else if (strcmp(key, "lxc.network") == 0)
2555 return lxc_get_item_network(c, retv, inlen);
2556 else if (strncmp(key, "lxc.network.", 12) == 0)
2557 return lxc_get_item_nic(c, retv, inlen, key + 12);
ee1e7aa0
SG		 2558 else if (strcmp(key, "lxc.start.auto") == 0)
2559 return lxc_get_conf_int(c, retv, inlen, c->start_auto);
2560 else if (strcmp(key, "lxc.start.delay") == 0)
2561 return lxc_get_conf_int(c, retv, inlen, c->start_delay);
2562 else if (strcmp(key, "lxc.start.order") == 0)
2563 return lxc_get_conf_int(c, retv, inlen, c->start_order);
a8dfe4e0
WB		 2564 else if (strcmp(key, "lxc.monitor.unshare") == 0)
2565 return lxc_get_conf_int(c, retv, inlen, c->monitor_unshare);
ee1e7aa0
SG		 2566 else if (strcmp(key, "lxc.group") == 0)
2567 return lxc_get_item_groups(c, retv, inlen);
58e0f57d
SH		 2568 else if (strcmp(key, "lxc.seccomp") == 0)
2569 v = c->seccomp;
ab799c0b
SG		 2570 else if (strcmp(key, "lxc.environment") == 0)
2571 return lxc_get_item_environment(c, retv, inlen);
67c660d0
SG		 2572 else if (strcmp(key, "lxc.init_cmd") == 0)
2573 v = c->init_cmd;
68d18db8
PT		 2574 else if (strcmp(key, "lxc.init_uid") == 0)
2575 return lxc_get_conf_int(c, retv, inlen, c->init_uid);
2576 else if (strcmp(key, "lxc.init_gid") == 0)
2577 return lxc_get_conf_int(c, retv, inlen, c->init_gid);
8796becf
CB		 2578 else if (strcmp(key, "lxc.ephemeral") == 0)
2579 return lxc_get_conf_int(c, retv, inlen, c->ephemeral);
76d0127f
CB		 2580 else if (strcmp(key, "lxc.syslog") == 0)
2581 v = c->syslog;
5a46f283
CB		 2582 else if (strcmp(key, "lxc.no_new_privs") == 0)
2583 return lxc_get_conf_int(c, retv, inlen, c->no_new_privs);
72d0e1cb
SG		 2584 else return -1;
2585
2586 if (!v)
2587 return 0;
2588 if (retv && inlen >= strlen(v) + 1)
2589 strncpy(retv, v, strlen(v)+1);
2590 return strlen(v);
2591}
2592
12a50cc6 2593int lxc_clear_config_item(struct lxc_conf *c, const char *key)
72d0e1cb
SG		 2594{
2595 if (strcmp(key, "lxc.network") == 0)
2596 return lxc_clear_config_network(c);
2597 else if (strncmp(key, "lxc.network.", 12) == 0)
2598 return lxc_clear_nic(c, key + 12);
2599 else if (strcmp(key, "lxc.cap.drop") == 0)
2600 return lxc_clear_config_caps(c);
1fb86a7c
SH		 2601 else if (strcmp(key, "lxc.cap.keep") == 0)
2602 return lxc_clear_config_keepcaps(c);
72d0e1cb
SG		 2603 else if (strncmp(key, "lxc.cgroup", 10) == 0)
2604 return lxc_clear_cgroups(c, key);
a7c6b8c7 2605 else if (strcmp(key, "lxc.mount.entry") == 0)
72d0e1cb 2606 return lxc_clear_mount_entries(c);
b099e9e9
SH		 2607 else if (strcmp(key, "lxc.mount.auto") == 0)
2608 return lxc_clear_automounts(c);
17ed13a3
SH		 2609 else if (strncmp(key, "lxc.hook", 8) == 0)
2610 return lxc_clear_hooks(c, key);
ee1e7aa0
SG		 2611 else if (strncmp(key, "lxc.group", 9) == 0)
2612 return lxc_clear_groups(c);
fcdc3e50 2613 else if (strncmp(key, "lxc.environment", 15) == 0)
ab799c0b 2614 return lxc_clear_environment(c);
fcdc3e50 2615 else if (strncmp(key, "lxc.id_map", 10) == 0)
26f1b390 2616 return lxc_clear_idmaps(c);
72d0e1cb
SG		 2617 return -1;
2618}
2619
2620/*
2621 * writing out a confile.
2622 */
2623void write_config(FILE *fout, struct lxc_conf *c)
2624{
6b0d5538
SH		 2625 size_t len = c->unexpanded_len;
2626 int ret;
72d0e1cb 2627
6b0d5538
SH		 2628 if (!len)
2629 return;
2630 ret = fwrite(c->unexpanded_config, 1, len, fout);
2631 if (ret != len)
2632 SYSERROR("Error writing configuration file");
2633}
f979ac15 2634
6b0d5538
SH		 2635bool do_append_unexp_config_line(struct lxc_conf *conf, const char *key, const char *v)
2636{
2637 int ret;
2638 size_t len = strlen(key) + strlen(v) + 4;
2639 char *tmp = alloca(len);
4184c3e1 2640
6b0d5538
SH		 2641 ret = snprintf(tmp, len, "%s = %s", key, v);
2642 if (ret < 0 || ret >= len)
2643 return false;
2644
2645 /* Save the line verbatim into unexpanded_conf */
2646 if (append_unexp_config_line(tmp, conf))
2647 return false;
2648
2649 return true;
2650}
2651
2652void clear_unexp_config_line(struct lxc_conf *conf, const char *key, bool rm_subkeys)
2653{
2654 char *lstart = conf->unexpanded_config, *lend;
2655
2656 if (!conf->unexpanded_config)
2657 return;
2658 while (*lstart) {
2659 lend = strchr(lstart, '\n');
2660 char v;
2661 if (!lend)
2662 lend = lstart + strlen(lstart);
2663 else
2664 lend++;
2665 if (strncmp(lstart, key, strlen(key)) != 0) {
2666 lstart = lend;
2667 continue;
5f62730e 2668 }
6b0d5538
SH		 2669 if (!rm_subkeys) {
2670 v = lstart[strlen(key)];
2671 if (!isspace(v) && v != '=') {
2672 lstart = lend;
2673 continue;
2674 }
5f62730e 2675 }
6b0d5538
SH		 2676 conf->unexpanded_len -= (lend - lstart);
2677 if (*lend == '\0') {
2678 *lstart = '\0';
2679 return;
fd986e08 2680 }
6b0d5538 2681 memmove(lstart, lend, strlen(lend)+1);
fd986e08 2682 }
6b0d5538
SH		 2683}
2684
329b3625
CB		 2685bool clone_update_unexp_ovl_paths(struct lxc_conf *conf, const char *oldpath,
2686 const char *newpath, const char *oldname,
2687 const char *newname, const char *ovldir)
2688{
2689 const char *key = "lxc.mount.entry";
2690 int ret;
2691 char *lstart = conf->unexpanded_config;
2692 char *lend;
2693 char *p;
2694 char *q;
2695 size_t newdirlen = strlen(ovldir) + strlen(newpath) + strlen(newname) + 2;
2696 size_t olddirlen = strlen(ovldir) + strlen(oldpath) + strlen(oldname) + 2;
2697 char *olddir = alloca(olddirlen + 1);
2698 char *newdir = alloca(newdirlen + 1);
2699
2700 ret = snprintf(olddir, olddirlen + 1, "%s=%s/%s", ovldir, oldpath, oldname);
2701 if (ret < 0 || ret >= olddirlen + 1) {
2702 ERROR("Bug in %s", __func__);
2703 return false;
2704 }
2705 ret = snprintf(newdir, newdirlen + 1, "%s=%s/%s", ovldir, newpath, newname);
2706 if (ret < 0 || ret >= newdirlen + 1) {
2707 ERROR("Bug in %s", __func__);
2708 return false;
2709 }
2710 if (!conf->unexpanded_config)
2711 return true;
2712 while (*lstart) {
2713 lend = strchr(lstart, '\n');
2714 if (!lend)
2715 lend = lstart + strlen(lstart);
2716 else
2717 lend++;
2718 if (strncmp(lstart, key, strlen(key)) != 0)
2719 goto next;
2720 p = strchr(lstart + strlen(key), '=');
2721 if (!p)
2722 goto next;
2723 p++;
2724 while (isblank(*p))
2725 p++;
2726 if (p >= lend)
2727 goto next;
2728 /* Whenever an lxc.mount.entry entry is found in a line we check
2729 * if the substring " overlay" or the substring " aufs" is
2730 * present before doing any further work. We check for "
2731 * overlay" and " aufs" since both substrings need to have at
2732 * least one space before them in a valid overlay
2733 * lxc.mount.entry (/A B overlay). When the space before is
2734 * missing it is very likely that these substrings are part of a
2735 * path or something else. (Checking q >= lend ensures that we
2736 * only count matches in the current line.) */
2737 if ((!(q = strstr(p, " overlay")) || q >= lend) && (!(q = strstr(p, " aufs")) || q >= lend))
2738 goto next;
2739 if (!(q = strstr(p, olddir)) || (q >= lend))
2740 goto next;
2741
2742 /* replace the olddir with newdir */
2743 if (olddirlen >= newdirlen) {
2744 size_t diff = olddirlen - newdirlen;
2745 memcpy(q, newdir, newdirlen);
2746 if (olddirlen != newdirlen) {
2747 memmove(q + newdirlen, q + newdirlen + diff,
2748 strlen(q) - newdirlen - diff + 1);
2749 lend -= diff;
2750 conf->unexpanded_len -= diff;
2751 }
2752 } else {
2753 char *new;
2754 size_t diff = newdirlen - olddirlen;
2755 size_t oldlen = conf->unexpanded_len;
2756 size_t newlen = oldlen + diff;
2757 size_t poffset = q - conf->unexpanded_config;
2758 new = realloc(conf->unexpanded_config, newlen + 1);
2759 if (!new) {
2760 ERROR("Out of memory");
2761 return false;
2762 }
2763 conf->unexpanded_len = newlen;
2764 conf->unexpanded_alloced = newlen + 1;
2765 new[newlen - 1] = '\0';
2766 lend = new + (lend - conf->unexpanded_config);
2767 /* move over the remainder to make room for the newdir */
2768 memmove(new + poffset + newdirlen,
2769 new + poffset + olddirlen,
2770 oldlen - poffset - olddirlen + 1);
2771 conf->unexpanded_config = new;
2772 memcpy(new + poffset, newdir, newdirlen);
2773 lend += diff;
2774 }
2775next:
2776 lstart = lend;
2777 }
2778 return true;
2779}
2780
67702c21 2781bool clone_update_unexp_hooks(struct lxc_conf *conf, const char *oldpath,
d546aa0e
CB		 2782 const char *newpath, const char *oldname,
2783 const char *newname)
6b0d5538 2784{
67702c21
SH		 2785 const char *key = "lxc.hook";
2786 int ret;
2787 char *lstart = conf->unexpanded_config, *lend, *p;
2788 size_t newdirlen = strlen(newpath) + strlen(newname) + 1;
2789 size_t olddirlen = strlen(oldpath) + strlen(oldname) + 1;
2790 char *olddir = alloca(olddirlen + 1);
2791 char *newdir = alloca(newdirlen + 1);
2792
d546aa0e
CB		 2793 ret = snprintf(olddir, olddirlen + 1, "%s/%s", oldpath, oldname);
2794 if (ret < 0 || ret >= olddirlen + 1) {
67702c21
SH		 2795 ERROR("Bug in %s", __func__);
2796 return false;
2797 }
d546aa0e
CB		 2798 ret = snprintf(newdir, newdirlen + 1, "%s/%s", newpath, newname);
2799 if (ret < 0 || ret >= newdirlen + 1) {
67702c21
SH		 2800 ERROR("Bug in %s", __func__);
2801 return false;
2802 }
2803 if (!conf->unexpanded_config)
2804 return true;
2805 while (*lstart) {
2806 lend = strchr(lstart, '\n');
2807 if (!lend)
2808 lend = lstart + strlen(lstart);
2809 else
2810 lend++;
d546aa0e
CB		 2811 if (strncmp(lstart, key, strlen(key)) != 0)
2812 goto next;
2813 p = strchr(lstart + strlen(key), '=');
2814 if (!p)
2815 goto next;
67702c21
SH		 2816 p++;
2817 while (isblank(*p))
2818 p++;
d546aa0e
CB		 2819 if (p >= lend)
2820 goto next;
2821 if (strncmp(p, olddir, strlen(olddir)) != 0)
2822 goto next;
67702c21
SH		 2823 /* replace the olddir with newdir */
2824 if (olddirlen >= newdirlen) {
2825 size_t diff = olddirlen - newdirlen;
2826 memcpy(p, newdir, newdirlen);
2827 if (olddirlen != newdirlen) {
d546aa0e
CB		 2828 memmove(p + newdirlen, p + newdirlen + diff,
2829 strlen(p) - newdirlen - diff + 1);
67702c21
SH		 2830 lend -= diff;
2831 conf->unexpanded_len -= diff;
2832 }
67702c21
SH		 2833 } else {
2834 char *new;
2835 size_t diff = newdirlen - olddirlen;
2836 size_t oldlen = conf->unexpanded_len;
2837 size_t newlen = oldlen + diff;
2838 size_t poffset = p - conf->unexpanded_config;
d546aa0e 2839 new = realloc(conf->unexpanded_config, newlen + 1);
67702c21
SH		 2840 if (!new) {
2841 ERROR("Out of memory");
6b0d5538 2842 return false;
67702c21
SH		 2843 }
2844 conf->unexpanded_len = newlen;
d546aa0e
CB		 2845 conf->unexpanded_alloced = newlen + 1;
2846 new[newlen - 1] = '\0';
67702c21 2847 lend = new + (lend - conf->unexpanded_config);
d546aa0e
CB		 2848 /* move over the remainder to make room for the newdir */
2849 memmove(new + poffset + newdirlen,
2850 new + poffset + olddirlen,
2851 oldlen - poffset - olddirlen + 1);
67702c21 2852 conf->unexpanded_config = new;
d546aa0e
CB		 2853 memcpy(new + poffset, newdir, newdirlen);
2854 lend += diff;
fd986e08 2855 }
d546aa0e
CB		 2856next:
2857 lstart = lend;
fd986e08 2858 }
6b0d5538
SH		 2859 return true;
2860}
2861
2862#define DO(cmd) { \
2863 if (!(cmd)) { \
2864 ERROR("Error writing to new config"); \
2865 return false; \
2866 } \
2867}
2868
67702c21
SH		 2869static void new_hwaddr(char *hwaddr)
2870{
2871 FILE *f;
2872 f = fopen("/dev/urandom", "r");
2873 if (f) {
2874 unsigned int seed;
2875 int ret = fread(&seed, sizeof(seed), 1, f);
2876 if (ret != 1)
2877 seed = time(NULL);
2878 fclose(f);
2879 srand(seed);
2880 } else
2881 srand(time(NULL));
2882 snprintf(hwaddr, 18, "00:16:3e:%02x:%02x:%02x",
2883 rand() % 255, rand() % 255, rand() % 255);
2884}
2885
2886/*
2887 * This is called only from clone.
2888 * We wish to update all hwaddrs in the unexpanded config file. We
2889 * can't/don't want to update any which come from lxc.includes (there
2890 * shouldn't be any).
2891 * We can't just walk the c->lxc-conf->network list because that includes
2892 * netifs from the include files. So we update the ones which we find in
2893 * the unexp config file, then find the original macaddr in the
2894 * conf->network, and update that to the same value.
2895 */
2896bool network_new_hwaddrs(struct lxc_conf *conf)
6b0d5538
SH		 2897{
2898 struct lxc_list *it;
2899
67702c21
SH		 2900 const char *key = "lxc.network.hwaddr";
2901 char *lstart = conf->unexpanded_config, *lend, *p, *p2;
6b0d5538 2902
67702c21
SH		 2903 if (!conf->unexpanded_config)
2904 return true;
2905 while (*lstart) {
2906 char newhwaddr[18], oldhwaddr[17];
2907 lend = strchr(lstart, '\n');
2908 if (!lend)
2909 lend = lstart + strlen(lstart);
2910 else
2911 lend++;
2912 if (strncmp(lstart, key, strlen(key)) != 0) {
2913 lstart = lend;
2914 continue;
72d0e1cb 2915 }
67702c21
SH		 2916 p = strchr(lstart+strlen(key), '=');
2917 if (!p) {
2918 lstart = lend;
2919 continue;
72d0e1cb 2920 }
67702c21
SH		 2921 p++;
2922 while (isblank(*p))
2923 p++;
2924 if (!*p)
2925 return true;
2926 p2 = p;
2927 while (*p2 && !isblank(*p2) && *p2 != '\n')
2928 p2++;
2929 if (p2-p != 17) {
2930 WARN("Bad hwaddr entry");
2931 lstart = lend;
2932 continue;
72d0e1cb 2933 }
67702c21
SH		 2934 memcpy(oldhwaddr, p, 17);
2935 new_hwaddr(newhwaddr);
2936 memcpy(p, newhwaddr, 17);
2937 lxc_list_for_each(it, &conf->network) {
2938 struct lxc_netdev *n = it->elem;
2939 if (n->hwaddr && memcmp(oldhwaddr, n->hwaddr, 17) == 0)
2940 memcpy(n->hwaddr, newhwaddr, 17);
72d0e1cb 2941 }
67702c21
SH		 2942
2943 lstart = lend;
72d0e1cb 2944 }
6b0d5538 2945 return true;
72d0e1cb 2946}
8796becf
CB		 2947
2948static int config_ephemeral(const char *key, const char *value,
2949 struct lxc_conf *lxc_conf)
2950{
2951 int v = atoi(value);
2952
2953 if (v != 0 && v != 1) {
2954 ERROR("Wrong value for lxc.ephemeral. Can only be set to 0 or 1");
2955 return -1;
2956 } else {
2957 lxc_conf->ephemeral = v;
2958 }
2959
2960 return 0;
2961}
2962
64c57ea1 2963static int config_syslog(const char *key, const char *value,
76d0127f 2964 struct lxc_conf *lxc_conf)
64c57ea1 2965{
76d0127f
CB		 2966 int facility;
2967 facility = lxc_syslog_priority_to_int(value);
2968 if (facility == -EINVAL) {
2969 ERROR("Wrong value for lxc.syslog");
2970 return -1;
64c57ea1
BD		 2971 }
2972
76d0127f
CB		 2973 lxc_log_syslog(facility);
2974 return config_string_item(&lxc_conf->syslog, value);
64c57ea1 2975}
5a46f283
CB		 2976
2977static int config_no_new_privs(const char *key, const char *value,
2978 struct lxc_conf *lxc_conf)
2979{
2980 int v = atoi(value);
2981
2982 if (v != 0 && v != 1) {
2983 ERROR("Wrong value for lxc.no_new_privs. Can only be set to 0 or 1");
2984 return -1;
2985 }
2986 lxc_conf->no_new_privs = v ? true : false;
2987
2988 return 0;
2989}
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