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[mirror_lxc.git] / src / lxc / confile.c
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c2cc9f0a 1/*
2 * lxc: linux Container library
c2cc9f0a 3 * (C) Copyright IBM Corp. 2007, 2008
4 *
5 * Authors:
9afe19d6 6 * Daniel Lezcano <daniel.lezcano at free.fr>
70c1e708
CB		 7 * Serge Hallyn <serge@hallyn.com>
8 * Christian Brauner <christian.brauner@ubuntu.com>
c2cc9f0a 9 *
10 * This library is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU Lesser General Public
12 * License as published by the Free Software Foundation; either
13 * version 2.1 of the License, or (at your option) any later version.
14 *
15 * This library is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * Lesser General Public License for more details.
19 *
20 * You should have received a copy of the GNU Lesser General Public
21 * License along with this library; if not, write to the Free Software
250b1eec 22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
c2cc9f0a 23 */
70c1e708 24
12a50cc6 25#define _GNU_SOURCE
70c1e708
CB		 26#define __STDC_FORMAT_MACROS
27#include <ctype.h>
28#include <dirent.h>
29#include <errno.h>
30#include <fcntl.h>
31#include <inttypes.h>
32#include <signal.h>
c2cc9f0a 33#include <stdio.h>
34#include <stdlib.h>
35#include <string.h>
70c1e708
CB		 36#include <syslog.h>
37#include <time.h>
c2cc9f0a 38#include <unistd.h>
70c1e708
CB		 39#include <arpa/inet.h>
40#include <net/if.h>
41#include <netinet/in.h>
42#include <sys/param.h>
63376d7d 43#include <sys/stat.h>
c2cc9f0a 44#include <sys/types.h>
c2cc9f0a 45#include <sys/utsname.h>
c2cc9f0a 46
70c1e708 47#include "conf.h"
6ff05e18 48#include "config.h"
525f0002 49#include "confile.h"
953fe44f 50#include "confile_legacy.h"
0b843d35 51#include "confile_utils.h"
f2363e38 52#include "log.h"
58e0f57d 53#include "lxcseccomp.h"
70c1e708
CB		 54#include "network.h"
55#include "parse.h"
28d832c4 56#include "storage.h"
70c1e708 57#include "utils.h"
36eb9bde 58
576400e5 59#if HAVE_IFADDRS_H
60#include <ifaddrs.h>
61#else
62#include <../include/ifaddrs.h>
63#endif
64
6ff05e18
SG		 65#if HAVE_SYS_PERSONALITY_H
66#include <sys/personality.h>
67#endif
68
36eb9bde 69lxc_log_define(lxc_confile, lxc);
576f946d 70
861d1ada
CB		 71#define lxc_config_define(name) \
72 static int set_config_##name(const char *, const char *, \
73 struct lxc_conf *, void *); \
74 static int get_config_##name(const char *, char *, int, \
75 struct lxc_conf *, void *); \
76 static int clr_config_##name(const char *, struct lxc_conf *, void *);
71e287ca 77
63bab717 78lxc_config_define(autodev);
71e287ca 79lxc_config_define(apparmor_allow_incomplete);
63bab717
CB		 80lxc_config_define(apparmor_profile);
81lxc_config_define(cap_drop);
82lxc_config_define(cap_keep);
43654d34
CB		 83lxc_config_define(cgroup_controller);
84lxc_config_define(cgroup_dir);
63bab717 85lxc_config_define(console_logfile);
d91adfa6 86lxc_config_define(console_rotate);
3a784510 87lxc_config_define(console_buffer_logfile);
28f3b1cd 88lxc_config_define(console_buffer_size);
63bab717
CB		 89lxc_config_define(console_path);
90lxc_config_define(environment);
91lxc_config_define(ephemeral);
92lxc_config_define(execute_cmd);
93lxc_config_define(group);
94lxc_config_define(hooks);
71e287ca 95lxc_config_define(idmaps);
63bab717
CB		 96lxc_config_define(includefiles);
97lxc_config_define(init_cmd);
98lxc_config_define(init_gid);
99lxc_config_define(init_uid);
46cc906d 100lxc_config_define(log_file);
63bab717
CB		 101lxc_config_define(log_level);
102lxc_config_define(log_syslog);
103lxc_config_define(monitor);
71e287ca 104lxc_config_define(mount);
105lxc_config_define(mount_auto);
47148e96 106lxc_config_define(mount_fstab);
28d9e29e 107lxc_config_define(namespace);
63bab717 108lxc_config_define(net);
71e287ca 109lxc_config_define(net_flags);
71e287ca 110lxc_config_define(net_hwaddr);
9ff60df2 111lxc_config_define(net_ipv4_address);
71e287ca 112lxc_config_define(net_ipv4_gateway);
2e44ae28 113lxc_config_define(net_ipv6_address);
71e287ca 114lxc_config_define(net_ipv6_gateway);
63bab717
CB		 115lxc_config_define(net_link);
116lxc_config_define(net_macvlan_mode);
117lxc_config_define(net_mtu);
118lxc_config_define(net_name);
71e287ca 119lxc_config_define(net_nic);
63bab717
CB		 120lxc_config_define(net_script_down);
121lxc_config_define(net_script_up);
122lxc_config_define(net_type);
123lxc_config_define(net_veth_pair);
124lxc_config_define(net_vlan_id);
125lxc_config_define(no_new_privs);
126lxc_config_define(noop);
127lxc_config_define(personality);
128lxc_config_define(prlimit);
129lxc_config_define(pty_max);
130lxc_config_define(rootfs_backend);
131lxc_config_define(rootfs_mount);
132lxc_config_define(rootfs_options);
133lxc_config_define(rootfs_path);
0b427da0 134lxc_config_define(seccomp_profile);
63bab717 135lxc_config_define(selinux_context);
55c84efc 136lxc_config_define(signal_halt);
137lxc_config_define(signal_reboot);
138lxc_config_define(signal_stop);
71e287ca 139lxc_config_define(start);
63bab717
CB		 140lxc_config_define(tty_max);
141lxc_config_define(tty_dir);
142lxc_config_define(uts_name);
c2cc9f0a 143
72d0e1cb 144static struct lxc_config_t config[] = {
7ec2e32a
CB		 145 /* REMOVE in LXC 3.0 */
146 { "lxc.arch", false, set_config_personality, get_config_personality, clr_config_personality, },
7ec2e32a
CB		 147 { "lxc.apparmor.profile", false, set_config_apparmor_profile, get_config_apparmor_profile, clr_config_apparmor_profile, },
148 { "lxc.apparmor.allow_incomplete", false, set_config_apparmor_allow_incomplete, get_config_apparmor_allow_incomplete, clr_config_apparmor_allow_incomplete, },
71acf5d0
CB		 149 { "lxc.autodev", false, set_config_autodev, get_config_autodev, clr_config_autodev, },
150 { "lxc.cap.drop", false, set_config_cap_drop, get_config_cap_drop, clr_config_cap_drop, },
151 { "lxc.cap.keep", false, set_config_cap_keep, get_config_cap_keep, clr_config_cap_keep, },
43654d34
CB		 152 { "lxc.cgroup.dir", false, set_config_cgroup_dir, get_config_cgroup_dir, clr_config_cgroup_dir, },
153 { "lxc.cgroup", false, set_config_cgroup_controller, get_config_cgroup_controller, clr_config_cgroup_controller, },
3a784510 154 { "lxc.console.buffer.logfile", false, set_config_console_buffer_logfile, get_config_console_buffer_logfile, clr_config_console_buffer_logfile, },
28f3b1cd 155 { "lxc.console.buffer.size", false, set_config_console_buffer_size, get_config_console_buffer_size, clr_config_console_buffer_size, },
71acf5d0
CB		 156 { "lxc.console.logfile", false, set_config_console_logfile, get_config_console_logfile, clr_config_console_logfile, },
157 { "lxc.console.path", false, set_config_console_path, get_config_console_path, clr_config_console_path, },
d91adfa6 158 { "lxc.console.rotate", false, set_config_console_rotate, get_config_console_rotate, clr_config_console_rotate, },
71acf5d0
CB		 159 { "lxc.environment", false, set_config_environment, get_config_environment, clr_config_environment, },
160 { "lxc.ephemeral", false, set_config_ephemeral, get_config_ephemeral, clr_config_ephemeral, },
3a784510 161 { "lxc.execute.cmd", false, set_config_execute_cmd, get_config_execute_cmd, clr_config_execute_cmd, },
71acf5d0
CB		 162 { "lxc.group", false, set_config_group, get_config_group, clr_config_group, },
163 { "lxc.hook.autodev", false, set_config_hooks, get_config_hooks, clr_config_hooks, },
164 { "lxc.hook.clone", false, set_config_hooks, get_config_hooks, clr_config_hooks, },
165 { "lxc.hook.destroy", false, set_config_hooks, get_config_hooks, clr_config_hooks, },
166 { "lxc.hook.mount", false, set_config_hooks, get_config_hooks, clr_config_hooks, },
167 { "lxc.hook.post-stop", false, set_config_hooks, get_config_hooks, clr_config_hooks, },
08dd2805 168 { "lxc.hook.start-host", false, set_config_hooks, get_config_hooks, clr_config_hooks, },
7ec2e32a
CB		 169 { "lxc.hook.pre-start", false, set_config_hooks, get_config_hooks, clr_config_hooks, },
170 { "lxc.hook.pre-mount", false, set_config_hooks, get_config_hooks, clr_config_hooks, },
7ec2e32a
CB		 171 { "lxc.hook.start", false, set_config_hooks, get_config_hooks, clr_config_hooks, },
172 { "lxc.hook.stop", false, set_config_hooks, get_config_hooks, clr_config_hooks, },
7ec2e32a 173 { "lxc.hook", false, set_config_hooks, get_config_hooks, clr_config_hooks, },
71acf5d0
CB		 174 { "lxc.idmap", false, set_config_idmaps, get_config_idmaps, clr_config_idmaps, },
175 { "lxc.include", false, set_config_includefiles, get_config_includefiles, clr_config_includefiles, },
176 { "lxc.init.cmd", false, set_config_init_cmd, get_config_init_cmd, clr_config_init_cmd, },
177 { "lxc.init.gid", false, set_config_init_gid, get_config_init_gid, clr_config_init_gid, },
178 { "lxc.init.uid", false, set_config_init_uid, get_config_init_uid, clr_config_init_uid, },
179 { "lxc.log.file", false, set_config_log_file, get_config_log_file, clr_config_log_file, },
180 { "lxc.log.level", false, set_config_log_level, get_config_log_level, clr_config_log_level, },
181 { "lxc.log.syslog", false, set_config_log_syslog, get_config_log_syslog, clr_config_log_syslog, },
182 { "lxc.monitor.unshare", false, set_config_monitor, get_config_monitor, clr_config_monitor, },
183 { "lxc.mount.auto", false, set_config_mount_auto, get_config_mount_auto, clr_config_mount_auto, },
184 { "lxc.mount.entry", false, set_config_mount, get_config_mount, clr_config_mount, },
185 { "lxc.mount.fstab", false, set_config_mount_fstab, get_config_mount_fstab, clr_config_mount_fstab, },
28d9e29e 186 { "lxc.namespace", false, set_config_namespace, get_config_namespace, clr_config_namespace, },
953fe44f 187
49072f06 188 /* [START]: REMOVE IN LXC 3.0 */
7ec2e32a
CB		 189 { "lxc.network.type", true, set_config_network_legacy_type, get_config_network_legacy_item, clr_config_network_legacy_item, },
190 { "lxc.network.flags", true, set_config_network_legacy_flags, get_config_network_legacy_item, clr_config_network_legacy_item, },
191 { "lxc.network.link", true, set_config_network_legacy_link, get_config_network_legacy_item, clr_config_network_legacy_item, },
192 { "lxc.network.name", true, set_config_network_legacy_name, get_config_network_legacy_item, clr_config_network_legacy_item, },
193 { "lxc.network.macvlan.mode", true, set_config_network_legacy_macvlan_mode, get_config_network_legacy_item, clr_config_network_legacy_item, },
194 { "lxc.network.veth.pair", true, set_config_network_legacy_veth_pair, get_config_network_legacy_item, clr_config_network_legacy_item, },
195 { "lxc.network.script.up", true, set_config_network_legacy_script_up, get_config_network_legacy_item, clr_config_network_legacy_item, },
196 { "lxc.network.script.down", true, set_config_network_legacy_script_down, get_config_network_legacy_item, clr_config_network_legacy_item, },
197 { "lxc.network.hwaddr", true, set_config_network_legacy_hwaddr, get_config_network_legacy_item, clr_config_network_legacy_item, },
198 { "lxc.network.mtu", true, set_config_network_legacy_mtu, get_config_network_legacy_item, clr_config_network_legacy_item, },
199 { "lxc.network.vlan.id", true, set_config_network_legacy_vlan_id, get_config_network_legacy_item, clr_config_network_legacy_item, },
200 { "lxc.network.ipv4.gateway", true, set_config_network_legacy_ipv4_gateway, get_config_network_legacy_item, clr_config_network_legacy_item, },
201 { "lxc.network.ipv4", true, set_config_network_legacy_ipv4, get_config_network_legacy_item, clr_config_network_legacy_item, },
202 { "lxc.network.ipv6.gateway", true, set_config_network_legacy_ipv6_gateway, get_config_network_legacy_item, clr_config_network_legacy_item, },
203 { "lxc.network.ipv6", true, set_config_network_legacy_ipv6, get_config_network_legacy_item, clr_config_network_legacy_item, },
204 { "lxc.network.", true, set_config_network_legacy_nic, get_config_network_legacy_item, clr_config_network_legacy_item, },
205 { "lxc.network", true, set_config_network_legacy, get_config_network_legacy, clr_config_network_legacy, },
49072f06 206 /* [END]: REMOVE IN LXC 3.0 */
953fe44f 207
7ec2e32a 208 { "lxc.net.flags", false, set_config_net_flags, get_config_net_flags, clr_config_net_flags, },
71acf5d0
CB		 209 { "lxc.net.hwaddr", false, set_config_net_hwaddr, get_config_net_hwaddr, clr_config_net_hwaddr, },
210 { "lxc.net.ipv4.address", false, set_config_net_ipv4_address, get_config_net_ipv4_address, clr_config_net_ipv4_address, },
211 { "lxc.net.ipv4.gateway", false, set_config_net_ipv4_gateway, get_config_net_ipv4_gateway, clr_config_net_ipv4_gateway, },
212 { "lxc.net.ipv6.address", false, set_config_net_ipv6_address, get_config_net_ipv6_address, clr_config_net_ipv6_address, },
213 { "lxc.net.ipv6.gateway", false, set_config_net_ipv6_gateway, get_config_net_ipv6_gateway, clr_config_net_ipv6_gateway, },
7ec2e32a 214 { "lxc.net.link", false, set_config_net_link, get_config_net_link, clr_config_net_link, },
7ec2e32a 215 { "lxc.net.macvlan.mode", false, set_config_net_macvlan_mode, get_config_net_macvlan_mode, clr_config_net_macvlan_mode, },
7ec2e32a 216 { "lxc.net.mtu", false, set_config_net_mtu, get_config_net_mtu, clr_config_net_mtu, },
71acf5d0
CB		 217 { "lxc.net.name", false, set_config_net_name, get_config_net_name, clr_config_net_name, },
218 { "lxc.net.script.down", false, set_config_net_script_down, get_config_net_script_down, clr_config_net_script_down, },
219 { "lxc.net.script.up", false, set_config_net_script_up, get_config_net_script_up, clr_config_net_script_up, },
220 { "lxc.net.type", false, set_config_net_type, get_config_net_type, clr_config_net_type, },
7ec2e32a 221 { "lxc.net.vlan.id", false, set_config_net_vlan_id, get_config_net_vlan_id, clr_config_net_vlan_id, },
71acf5d0 222 { "lxc.net.veth.pair", false, set_config_net_veth_pair, get_config_net_veth_pair, clr_config_net_veth_pair, },
7ec2e32a
CB		 223 { "lxc.net.", false, set_config_net_nic, get_config_net_nic, clr_config_net_nic, },
224 { "lxc.net", false, set_config_net, get_config_net, clr_config_net, },
71acf5d0
CB		 225 { "lxc.no_new_privs", false, set_config_no_new_privs, get_config_no_new_privs, clr_config_no_new_privs, },
226 { "lxc.prlimit", false, set_config_prlimit, get_config_prlimit, clr_config_prlimit, },
227 { "lxc.pty.max", false, set_config_pty_max, get_config_pty_max, clr_config_pty_max, },
228 { "lxc.rootfs.mount", false, set_config_rootfs_mount, get_config_rootfs_mount, clr_config_rootfs_mount, },
229 { "lxc.rootfs.options", false, set_config_rootfs_options, get_config_rootfs_options, clr_config_rootfs_options, },
230 { "lxc.rootfs.path", false, set_config_rootfs_path, get_config_rootfs_path, clr_config_rootfs_path, },
7ec2e32a 231 { "lxc.seccomp.profile", false, set_config_seccomp_profile, get_config_seccomp_profile, clr_config_seccomp_profile, },
71acf5d0 232 { "lxc.selinux.context", false, set_config_selinux_context, get_config_selinux_context, clr_config_selinux_context, },
7ec2e32a
CB		 233 { "lxc.signal.halt", false, set_config_signal_halt, get_config_signal_halt, clr_config_signal_halt, },
234 { "lxc.signal.reboot", false, set_config_signal_reboot, get_config_signal_reboot, clr_config_signal_reboot, },
235 { "lxc.signal.stop", false, set_config_signal_stop, get_config_signal_stop, clr_config_signal_stop, },
236 { "lxc.start.auto", false, set_config_start, get_config_start, clr_config_start, },
237 { "lxc.start.delay", false, set_config_start, get_config_start, clr_config_start, },
238 { "lxc.start.order", false, set_config_start, get_config_start, clr_config_start, },
71acf5d0
CB		 239 { "lxc.tty.dir", false, set_config_tty_dir, get_config_tty_dir, clr_config_tty_dir, },
240 { "lxc.tty.max", false, set_config_tty_max, get_config_tty_max, clr_config_tty_max, },
241 { "lxc.uts.name", false, set_config_uts_name, get_config_uts_name, clr_config_uts_name, },
240d4b74 242
49072f06 243 /* [START]: REMOVE IN LXC 3.0 */
71acf5d0
CB		 244 { "lxc.pts", true, set_config_pty_max, get_config_pty_max, clr_config_pty_max, },
245 { "lxc.devttydir", true, set_config_tty_dir, get_config_tty_dir, clr_config_tty_dir, },
246 { "lxc.tty", true, set_config_tty_max, get_config_tty_max, clr_config_tty_max, },
247 { "lxc.aa_profile", true, set_config_lsm_aa_profile, get_config_lsm_aa_profile, clr_config_lsm_aa_profile, },
248 { "lxc.aa_allow_incomplete", true, set_config_lsm_aa_incomplete, get_config_lsm_aa_incomplete, clr_config_lsm_aa_incomplete, },
249 { "lxc.se_context", true, set_config_lsm_se_context, get_config_lsm_se_context, clr_config_lsm_se_context, },
250 { "lxc.id_map", true, set_config_idmaps, get_config_idmaps, clr_config_idmaps, },
251 { "lxc.mount", true, set_config_mount_fstab, get_config_mount_fstab, clr_config_mount_fstab, },
252 { "lxc.rootfs.backend", true, set_config_rootfs_backend, get_config_rootfs_backend, clr_config_rootfs_backend, },
253 { "lxc.rootfs", true, set_config_rootfs_path, get_config_rootfs_path, clr_config_rootfs_path, },
254 { "lxc.utsname", true, set_config_uts_name, get_config_uts_name, clr_config_uts_name, },
255 { "lxc.seccomp", true, set_config_seccomp_profile, get_config_seccomp_profile, clr_config_seccomp_profile, },
256 { "lxc.console", true, set_config_console_path, get_config_console_path, clr_config_console_path, },
257 { "lxc.haltsignal", true, set_config_signal_halt, get_config_signal_halt, clr_config_signal_halt, },
258 { "lxc.rebootsignal", true, set_config_signal_reboot, get_config_signal_reboot, clr_config_signal_reboot, },
259 { "lxc.stopsignal", true, set_config_signal_stop, get_config_signal_stop, clr_config_signal_stop, },
7ec2e32a 260 { "lxc.syslog", true, set_config_log_syslog, get_config_log_syslog, clr_config_log_syslog, },
63bab717 261 { "lxc.kmsg", true, set_config_noop, get_config_noop, clr_config_noop, },
7ec2e32a
CB		 262 { "lxc.loglevel", true, set_config_log_level, get_config_log_level, clr_config_log_level, },
263 { "lxc.logfile", true, set_config_log_file, get_config_log_file, clr_config_log_file, },
264 { "lxc.init_cmd", true, set_config_init_cmd, get_config_init_cmd, clr_config_init_cmd, },
265 { "lxc.init_uid", true, set_config_init_uid, get_config_init_uid, clr_config_init_uid, },
266 { "lxc.init_gid", true, set_config_init_gid, get_config_init_gid, clr_config_init_gid, },
267 { "lxc.limit", true, set_config_limit, get_config_limit, clr_config_limit, },
63bab717 268 { "lxc.pivotdir", true, set_config_noop, get_config_noop, clr_config_noop, },
49072f06 269 /* [END]: REMOVE IN LXC 3.0 */
a84b9932
AV		 270};
271
272struct signame {
273 int num;
74a3920a 274 const char *name;
a84b9932
AV		 275};
276
74a3920a 277static const struct signame signames[] = {
504a2217
CB		 278 { SIGHUP, "HUP" },
279 { SIGINT, "INT" },
280 { SIGQUIT, "QUIT" },
281 { SIGILL, "ILL" },
282 { SIGABRT, "ABRT" },
283 { SIGFPE, "FPE" },
284 { SIGKILL, "KILL" },
285 { SIGSEGV, "SEGV" },
286 { SIGPIPE, "PIPE" },
287 { SIGALRM, "ALRM" },
288 { SIGTERM, "TERM" },
289 { SIGUSR1, "USR1" },
290 { SIGUSR2, "USR2" },
291 { SIGCHLD, "CHLD" },
292 { SIGCONT, "CONT" },
293 { SIGSTOP, "STOP" },
294 { SIGTSTP, "TSTP" },
295 { SIGTTIN, "TTIN" },
296 { SIGTTOU, "TTOU" },
89dfc302 297#ifdef SIGTRAP
504a2217 298 { SIGTRAP, "TRAP" },
89dfc302
SY		 299#endif
300#ifdef SIGIOT
504a2217 301 { SIGIOT, "IOT" },
89dfc302
SY		 302#endif
303#ifdef SIGEMT
504a2217 304 { SIGEMT, "EMT" },
89dfc302
SY		 305#endif
306#ifdef SIGBUS
504a2217 307 { SIGBUS, "BUS" },
89dfc302
SY		 308#endif
309#ifdef SIGSTKFLT
310 { SIGSTKFLT, "STKFLT" },
311#endif
312#ifdef SIGCLD
504a2217 313 { SIGCLD, "CLD" },
89dfc302
SY		 314#endif
315#ifdef SIGURG
504a2217 316 { SIGURG, "URG" },
89dfc302
SY		 317#endif
318#ifdef SIGXCPU
504a2217 319 { SIGXCPU, "XCPU" },
89dfc302
SY		 320#endif
321#ifdef SIGXFSZ
504a2217 322 { SIGXFSZ, "XFSZ" },
89dfc302
SY		 323#endif
324#ifdef SIGVTALRM
325 { SIGVTALRM, "VTALRM" },
326#endif
327#ifdef SIGPROF
504a2217 328 { SIGPROF, "PROF" },
89dfc302
SY		 329#endif
330#ifdef SIGWINCH
504a2217 331 { SIGWINCH, "WINCH" },
89dfc302
SY		 332#endif
333#ifdef SIGIO
504a2217 334 { SIGIO, "IO" },
89dfc302
SY		 335#endif
336#ifdef SIGPOLL
504a2217 337 { SIGPOLL, "POLL" },
89dfc302
SY		 338#endif
339#ifdef SIGINFO
504a2217 340 { SIGINFO, "INFO" },
89dfc302
SY		 341#endif
342#ifdef SIGLOST
504a2217 343 { SIGLOST, "LOST" },
89dfc302
SY		 344#endif
345#ifdef SIGPWR
504a2217 346 { SIGPWR, "PWR" },
89dfc302
SY		 347#endif
348#ifdef SIGUNUSED
349 { SIGUNUSED, "UNUSED" },
350#endif
351#ifdef SIGSYS
504a2217 352 { SIGSYS, "SYS" },
89dfc302 353#endif
c2cc9f0a 354};
355
504a2217 356static const size_t config_size = sizeof(config) / sizeof(struct lxc_config_t);
c2cc9f0a 357
300df83e 358struct lxc_config_t *lxc_get_config(const char *key)
c2cc9f0a 359{
84760c11 360 size_t i;
c2cc9f0a 361
362 for (i = 0; i < config_size; i++)
504a2217 363 if (!strncmp(config[i].name, key, strlen(config[i].name)))
c2cc9f0a 364 return &config[i];
300df83e 365
c2cc9f0a 366 return NULL;
367}
368
f9373e40
CB		 369static int set_config_net(const char *key, const char *value,
370 struct lxc_conf *lxc_conf, void *data)
6b0d5538 371{
663e9916 372 if (!lxc_config_value_empty(value)) {
f9373e40 373 ERROR("lxc.net must not have a value");
6b0d5538
SH		 374 return -1;
375 }
376
f9373e40 377 return clr_config_net(key, lxc_conf, data);
6b0d5538
SH		 378}
379
f9373e40
CB		 380static int set_config_net_type(const char *key, const char *value,
381 struct lxc_conf *lxc_conf, void *data)
c2cc9f0a 382{
c2cc9f0a 383 struct lxc_netdev *netdev;
c2cc9f0a 384
663e9916 385 if (lxc_config_value_empty(value))
f9373e40 386 return clr_config_net_type(key, lxc_conf, data);
c302b476 387
f9373e40
CB		 388 if (!data)
389 return -1;
390 else
bbc079cf
CB		 391 netdev = data;
392 if (!netdev)
c2cc9f0a 393 return -1;
c2cc9f0a 394
bbc079cf 395 if (!strcmp(value, "veth")) {
24654103 396 netdev->type = LXC_NET_VETH;
bbc079cf 397 } else if (!strcmp(value, "macvlan")) {
24654103 398 netdev->type = LXC_NET_MACVLAN;
9b0df30f
CB		 399 lxc_macvlan_mode_to_flag(&netdev->priv.macvlan_attr.mode,
400 "private");
bbc079cf 401 } else if (!strcmp(value, "vlan")) {
24654103 402 netdev->type = LXC_NET_VLAN;
bbc079cf 403 } else if (!strcmp(value, "phys")) {
24654103 404 netdev->type = LXC_NET_PHYS;
bbc079cf 405 } else if (!strcmp(value, "empty")) {
24654103 406 netdev->type = LXC_NET_EMPTY;
bbc079cf 407 } else if (!strcmp(value, "none")) {
26b797f3 408 netdev->type = LXC_NET_NONE;
bbc079cf 409 } else {
36eb9bde 410 ERROR("invalid network type %s", value);
c2cc9f0a 411 return -1;
412 }
bbc079cf 413
c2cc9f0a 414 return 0;
415}
416
f9373e40
CB		 417static int set_config_net_flags(const char *key, const char *value,
418 struct lxc_conf *lxc_conf, void *data)
c2cc9f0a 419{
c2cc9f0a 420 struct lxc_netdev *netdev;
421
9d4bf22d 422 if (lxc_config_value_empty(value))
f9373e40 423 return clr_config_net_flags(key, lxc_conf, data);
9d4bf22d 424
f9373e40
CB		 425 if (!data)
426 return -1;
427 else
bbc079cf 428 netdev = data;
33c945e0 429 if (!netdev)
c2cc9f0a 430 return -1;
c2cc9f0a 431
33c945e0 432 netdev->flags |= IFF_UP;
c2cc9f0a 433
33c945e0
MT		 434 return 0;
435}
436
b45e32f9 437static int create_matched_ifnames(const char *value, struct lxc_conf *lxc_conf,
d5aba460 438 struct lxc_netdev *netdev)
576400e5 439{
440 struct ifaddrs *ifaddr, *ifa;
504a2217
CB		 441 int n;
442 int ret = 0;
f9373e40
CB		 443 const char *type_key = "lxc.net.type";
444 const char *link_key = "lxc.net.link";
576400e5 445 const char *tmpvalue = "phys";
576400e5 446
447 if (getifaddrs(&ifaddr) == -1) {
448 SYSERROR("Get network interfaces failed");
449 return -1;
450 }
451
452 for (ifa = ifaddr, n = 0; ifa != NULL; ifa = ifa->ifa_next, n++) {
453 if (!ifa->ifa_addr)
454 continue;
455 if (ifa->ifa_addr->sa_family != AF_PACKET)
456 continue;
457
504a2217 458 if (!strncmp(value, ifa->ifa_name, strlen(value) - 1)) {
f9373e40
CB		 459 ret = set_config_net_type(type_key, tmpvalue, lxc_conf,
460 netdev);
576400e5 461 if (!ret) {
f9373e40 462 ret = set_config_net_link(
c302b476 463 link_key, ifa->ifa_name, lxc_conf, netdev);
576400e5 464 if (ret) {
465 ERROR("failed to create matched ifnames");
466 break;
467 }
468 } else {
469 ERROR("failed to create matched ifnames");
470 break;
471 }
472 }
473 }
474
504a2217
CB		 475 freeifaddrs(ifaddr);
476 ifaddr = NULL;
091045f8 477
576400e5 478 return ret;
479}
480
f9373e40
CB		 481static int set_config_net_link(const char *key, const char *value,
482 struct lxc_conf *lxc_conf, void *data)
33c945e0
MT		 483{
484 struct lxc_netdev *netdev;
576400e5 485 int ret = 0;
33c945e0 486
6bed0fb6 487 if (lxc_config_value_empty(value))
f9373e40 488 return clr_config_net_link(key, lxc_conf, data);
6bed0fb6 489
f9373e40
CB		 490 if (!data)
491 return -1;
492 else
bbc079cf 493 netdev = data;
33c945e0 494 if (!netdev)
c2cc9f0a 495 return -1;
c2cc9f0a 496
b45e32f9
CB		 497 if (value[strlen(value) - 1] == '+' && netdev->type == LXC_NET_PHYS)
498 ret = create_matched_ifnames(value, lxc_conf, netdev);
499 else
de4855a8 500 ret = network_ifname(netdev->link, value);
576400e5 501
502 return ret;
c2cc9f0a 503}
504
f9373e40
CB		 505static int set_config_net_name(const char *key, const char *value,
506 struct lxc_conf *lxc_conf, void *data)
c2cc9f0a 507{
c2cc9f0a 508 struct lxc_netdev *netdev;
509
6bed0fb6 510 if (lxc_config_value_empty(value))
f9373e40 511 return clr_config_net_name(key, lxc_conf, data);
6bed0fb6 512
f9373e40
CB		 513 if (!data)
514 return -1;
515 else
bbc079cf 516 netdev = data;
33c945e0 517 if (!netdev)
c2cc9f0a 518 return -1;
c2cc9f0a 519
de4855a8 520 return network_ifname(netdev->name, value);
33c945e0
MT		 521}
522
f9373e40
CB		 523static int set_config_net_veth_pair(const char *key, const char *value,
524 struct lxc_conf *lxc_conf, void *data)
e892973e
DL		 525{
526 struct lxc_netdev *netdev;
527
6bed0fb6 528 if (lxc_config_value_empty(value))
f9373e40 529 return clr_config_net_veth_pair(key, lxc_conf, data);
6bed0fb6 530
f9373e40
CB		 531 if (!data)
532 return -1;
533 else
bbc079cf 534 netdev = data;
e892973e
DL		 535 if (!netdev)
536 return -1;
537
de4855a8 538 return network_ifname(netdev->priv.veth_attr.pair, value);
e892973e
DL		 539}
540
f9373e40
CB		 541static int set_config_net_macvlan_mode(const char *key, const char *value,
542 struct lxc_conf *lxc_conf, void *data)
8634bc19
MT		 543{
544 struct lxc_netdev *netdev;
545
6bed0fb6 546 if (lxc_config_value_empty(value))
f9373e40 547 return clr_config_net_macvlan_mode(key, lxc_conf, data);
6bed0fb6 548
f9373e40
CB		 549 if (!data)
550 return -1;
551 else
bbc079cf 552 netdev = data;
8634bc19
MT		 553 if (!netdev)
554 return -1;
555
9b0df30f 556 return lxc_macvlan_mode_to_flag(&netdev->priv.macvlan_attr.mode, value);
8634bc19
MT		 557}
558
f9373e40
CB		 559static int set_config_net_hwaddr(const char *key, const char *value,
560 struct lxc_conf *lxc_conf, void *data)
33c945e0
MT		 561{
562 struct lxc_netdev *netdev;
504a2217 563 char *new_value;
33c945e0 564
6bed0fb6 565 if (lxc_config_value_empty(value))
f9373e40 566 return clr_config_net_hwaddr(key, lxc_conf, data);
6bed0fb6 567
f9373e40
CB		 568 if (!data)
569 return -1;
570 else
ecbb3790 571 netdev = data;
ecbb3790
CB		 572 if (!netdev)
573 return -1;
574
504a2217 575 new_value = strdup(value);
d5aba460 576 if (!new_value)
c2cc9f0a 577 return -1;
d5aba460 578
508c263e 579 rand_complete_hwaddr(new_value);
c2cc9f0a 580
663e9916 581 if (lxc_config_value_empty(new_value)) {
508c263e
SH		 582 free(new_value);
583 netdev->hwaddr = NULL;
584 return 0;
585 }
586
587 netdev->hwaddr = new_value;
588 return 0;
c2cc9f0a 589}
590
f9373e40
CB		 591static int set_config_net_vlan_id(const char *key, const char *value,
592 struct lxc_conf *lxc_conf, void *data)
26c39028 593{
d5aba460 594 int ret;
26c39028
JHS		 595 struct lxc_netdev *netdev;
596
6bed0fb6 597 if (lxc_config_value_empty(value))
f9373e40 598 return clr_config_net_vlan_id(key, lxc_conf, data);
6bed0fb6 599
f9373e40
CB		 600 if (!data)
601 return -1;
602 else
bbc079cf 603 netdev = data;
26c39028
JHS		 604 if (!netdev)
605 return -1;
606
d5aba460
CB		 607 ret = get_u16(&netdev->priv.vlan_attr.vid, value, 0);
608 if (ret < 0)
26c39028
JHS		 609 return -1;
610
611 return 0;
612}
613
f9373e40
CB		 614static int set_config_net_mtu(const char *key, const char *value,
615 struct lxc_conf *lxc_conf, void *data)
442cbbe6 616{
442cbbe6
TR		 617 struct lxc_netdev *netdev;
618
6bed0fb6 619 if (lxc_config_value_empty(value))
f9373e40 620 return clr_config_net_mtu(key, lxc_conf, data);
6bed0fb6 621
f9373e40
CB		 622 if (!data)
623 return -1;
624 else
bbc079cf 625 netdev = data;
33c945e0 626 if (!netdev)
442cbbe6 627 return -1;
442cbbe6 628
713046e3 629 return set_config_string_item(&netdev->mtu, value);
442cbbe6
TR		 630}
631
9ff60df2
CB		 632static int set_config_net_ipv4_address(const char *key, const char *value,
633 struct lxc_conf *lxc_conf, void *data)
c2cc9f0a 634{
d5aba460 635 int ret;
c2cc9f0a 636 struct lxc_netdev *netdev;
33c945e0 637 struct lxc_inetdev *inetdev;
c2cc9f0a 638 struct lxc_list *list;
504a2217
CB		 639 char *cursor, *slash;
640 char *addr = NULL, *bcast = NULL, *prefix = NULL;
c2cc9f0a 641
663e9916 642 if (lxc_config_value_empty(value))
9ff60df2 643 return clr_config_net_ipv4_address(key, lxc_conf, data);
0797e123 644
f9373e40
CB		 645 if (!data)
646 return -1;
647 else
bbc079cf 648 netdev = data;
33c945e0 649 if (!netdev)
c2cc9f0a 650 return -1;
c2cc9f0a 651
652 inetdev = malloc(sizeof(*inetdev));
d5aba460 653 if (!inetdev)
c2cc9f0a 654 return -1;
d5aba460 655
c2cc9f0a 656 memset(inetdev, 0, sizeof(*inetdev));
657
658 list = malloc(sizeof(*list));
659 if (!list) {
53719062 660 free(inetdev);
c2cc9f0a 661 return -1;
662 }
663
664 lxc_list_init(list);
665 list->elem = inetdev;
666
956edc54
SG		 667 addr = strdup(value);
668 if (!addr) {
53719062
SH		 669 free(inetdev);
670 free(list);
956edc54
SG		 671 return -1;
672 }
c2cc9f0a 673
674 cursor = strstr(addr, " ");
675 if (cursor) {
676 *cursor = '\0';
677 bcast = cursor + 1;
678 }
679
680 slash = strstr(addr, "/");
681 if (slash) {
682 *slash = '\0';
683 prefix = slash + 1;
684 }
685
d5aba460
CB		 686 ret = inet_pton(AF_INET, addr, &inetdev->addr);
687 if (!ret || ret < 0) {
688 SYSERROR("Invalid ipv4 address \"%s\"", value);
53719062 689 free(inetdev);
956edc54 690 free(addr);
53719062 691 free(list);
c2cc9f0a 692 return -1;
693 }
694
d5aba460
CB		 695 if (bcast) {
696 ret = inet_pton(AF_INET, bcast, &inetdev->bcast);
697 if (!ret || ret < 0) {
698 SYSERROR("Invalid ipv4 broadcast address \"%s\"", value);
699 free(inetdev);
700 free(list);
701 free(addr);
702 return -1;
703 }
704
0093bb8c 705 }
c2cc9f0a 706
504a2217 707 /* No prefix specified, determine it from the network class. */
1c633398 708 if (prefix) {
d5aba460
CB		 709 ret = lxc_safe_uint(prefix, &inetdev->prefix);
710 if (ret < 0)
1c633398
CB		 711 return -1;
712 } else {
713 inetdev->prefix = config_ip_prefix(&inetdev->addr);
714 }
a059591e 715
504a2217
CB		 716 /* If no broadcast address, let compute one from the
717 * prefix and address.
0093bb8c
DL		 718 */
719 if (!bcast) {
1b7d4743 720 inetdev->bcast.s_addr = inetdev->addr.s_addr;
d5aba460 721 inetdev->bcast.s_addr |= htonl(INADDR_BROADCAST >> inetdev->prefix);
0093bb8c 722 }
c2cc9f0a 723
8538f388 724 lxc_list_add_tail(&netdev->ipv4, list);
c2cc9f0a 725
956edc54 726 free(addr);
c2cc9f0a 727 return 0;
728}
729
f9373e40
CB		 730static int set_config_net_ipv4_gateway(const char *key, const char *value,
731 struct lxc_conf *lxc_conf, void *data)
f8fee0e2
MK		 732{
733 struct lxc_netdev *netdev;
f8fee0e2 734
6bed0fb6 735 if (lxc_config_value_empty(value))
f9373e40 736 return clr_config_net_ipv4_gateway(key, lxc_conf, data);
6bed0fb6 737
f9373e40
CB		 738 if (!data)
739 return -1;
740 else
bbc079cf 741 netdev = data;
f8fee0e2
MK		 742 if (!netdev)
743 return -1;
744
e088e926 745 free(netdev->ipv4_gateway);
f8fee0e2 746
ab6faf2e 747 if (!strcmp(value, "auto")) {
19a26f82
MK		 748 netdev->ipv4_gateway = NULL;
749 netdev->ipv4_gateway_auto = true;
750 } else {
25a908b8 751 int ret;
e088e926
SG		 752 struct in_addr *gw;
753
754 gw = malloc(sizeof(*gw));
25a908b8 755 if (!gw)
e088e926 756 return -1;
e088e926 757
25a908b8
CB		 758 ret = inet_pton(AF_INET, value, gw);
759 if (!ret || ret < 0) {
760 SYSERROR("Invalid ipv4 gateway address \"%s\"", value);
53719062 761 free(gw);
19a26f82
MK		 762 return -1;
763 }
764
765 netdev->ipv4_gateway = gw;
766 netdev->ipv4_gateway_auto = false;
f8fee0e2
MK		 767 }
768
f8fee0e2
MK		 769 return 0;
770}
771
2e44ae28
CB		 772static int set_config_net_ipv6_address(const char *key, const char *value,
773 struct lxc_conf *lxc_conf, void *data)
c2cc9f0a 774{
25a908b8 775 int ret;
c2cc9f0a 776 struct lxc_netdev *netdev;
777 struct lxc_inet6dev *inet6dev;
778 struct lxc_list *list;
504a2217 779 char *slash, *valdup, *netmask;
c2cc9f0a 780
6bed0fb6 781 if (lxc_config_value_empty(value))
2e44ae28 782 return clr_config_net_ipv6_address(key, lxc_conf, data);
6bed0fb6 783
f9373e40
CB		 784 if (!data)
785 return -1;
786 else
bbc079cf 787 netdev = data;
33c945e0 788 if (!netdev)
c2cc9f0a 789 return -1;
c2cc9f0a 790
791 inet6dev = malloc(sizeof(*inet6dev));
25a908b8 792 if (!inet6dev)
c2cc9f0a 793 return -1;
25a908b8 794
c2cc9f0a 795 memset(inet6dev, 0, sizeof(*inet6dev));
796
797 list = malloc(sizeof(*list));
798 if (!list) {
28027320 799 free(inet6dev);
c2cc9f0a 800 return -1;
801 }
802
803 lxc_list_init(list);
804 list->elem = inet6dev;
805
956edc54
SG		 806 valdup = strdup(value);
807 if (!valdup) {
28027320
SH		 808 free(list);
809 free(inet6dev);
956edc54
SG		 810 return -1;
811 }
812
a059591e 813 inet6dev->prefix = 64;
12a50cc6 814 slash = strstr(valdup, "/");
c2cc9f0a 815 if (slash) {
816 *slash = '\0';
817 netmask = slash + 1;
1c633398
CB		 818 if (lxc_safe_uint(netmask, &inet6dev->prefix) < 0)
819 return -1;
c2cc9f0a 820 }
821
25a908b8
CB		 822 ret = inet_pton(AF_INET6, valdup, &inet6dev->addr);
823 if (!ret || ret < 0) {
824 SYSERROR("Invalid ipv6 address \"%s\"", valdup);
28027320
SH		 825 free(list);
826 free(inet6dev);
956edc54 827 free(valdup);
c2cc9f0a 828 return -1;
829 }
830
8538f388 831 lxc_list_add_tail(&netdev->ipv6, list);
c2cc9f0a 832
956edc54 833 free(valdup);
c2cc9f0a 834 return 0;
835}
836
f9373e40
CB		 837static int set_config_net_ipv6_gateway(const char *key, const char *value,
838 struct lxc_conf *lxc_conf, void *data)
f8fee0e2
MK		 839{
840 struct lxc_netdev *netdev;
f8fee0e2 841
6bed0fb6 842 if (lxc_config_value_empty(value))
f9373e40 843 return clr_config_net_ipv6_gateway(key, lxc_conf, data);
6bed0fb6 844
f9373e40
CB		 845 if (!data)
846 return -1;
847 else
bbc079cf 848 netdev = data;
f8fee0e2
MK		 849 if (!netdev)
850 return -1;
851
e088e926 852 free(netdev->ipv6_gateway);
f8fee0e2 853
ab6faf2e 854 if (!strcmp(value, "auto")) {
19a26f82
MK		 855 netdev->ipv6_gateway = NULL;
856 netdev->ipv6_gateway_auto = true;
857 } else {
25a908b8 858 int ret;
8fb86a37
SH		 859 struct in6_addr *gw;
860
bec695f3 861 gw = malloc(sizeof(*gw));
25a908b8 862 if (!gw)
bec695f3 863 return -1;
bec695f3 864
25a908b8
CB		 865 ret = inet_pton(AF_INET6, value, gw);
866 if (!ret || ret < 0) {
867 SYSERROR("Invalid ipv6 gateway address \"%s\"", value);
28027320 868 free(gw);
19a26f82
MK		 869 return -1;
870 }
871
872 netdev->ipv6_gateway = gw;
873 netdev->ipv6_gateway_auto = false;
f8fee0e2
MK		 874 }
875
f8fee0e2
MK		 876 return 0;
877}
878
f9373e40
CB		 879static int set_config_net_script_up(const char *key, const char *value,
880 struct lxc_conf *lxc_conf, void *data)
e3b4c4c4
ST		 881{
882 struct lxc_netdev *netdev;
883
6bed0fb6 884 if (lxc_config_value_empty(value))
f9373e40 885 return clr_config_net_script_up(key, lxc_conf, data);
6bed0fb6 886
f9373e40
CB		 887 if (!data)
888 return -1;
889 else
bbc079cf 890 netdev = data;
e3b4c4c4 891 if (!netdev)
504a2217 892 return -1;
e3b4c4c4 893
713046e3 894 return set_config_string_item(&netdev->upscript, value);
8fc8295a
DE		 895}
896
f9373e40
CB		 897static int set_config_net_script_down(const char *key, const char *value,
898 struct lxc_conf *lxc_conf, void *data)
8fc8295a
DE		 899{
900 struct lxc_netdev *netdev;
901
6bed0fb6 902 if (lxc_config_value_empty(value))
f9373e40 903 return clr_config_net_script_down(key, lxc_conf, data);
6bed0fb6 904
f9373e40
CB		 905 if (!data)
906 return -1;
907 else
bbc079cf 908 netdev = data;
8fc8295a 909 if (!netdev)
504a2217 910 return -1;
8fc8295a 911
713046e3 912 return set_config_string_item(&netdev->downscript, value);
e3b4c4c4
ST		 913}
914
26ddeedd
SH		 915static int add_hook(struct lxc_conf *lxc_conf, int which, char *hook)
916{
917 struct lxc_list *hooklist;
918
919 hooklist = malloc(sizeof(*hooklist));
920 if (!hooklist) {
921 free(hook);
922 return -1;
923 }
504a2217 924
26ddeedd
SH		 925 hooklist->elem = hook;
926 lxc_list_add_tail(&lxc_conf->hooks[which], hooklist);
927 return 0;
928}
929
0b427da0
CB		 930static int set_config_seccomp_profile(const char *key, const char *value,
931 struct lxc_conf *lxc_conf, void *data)
8f2c3a70 932{
713046e3 933 return set_config_path_item(&lxc_conf->seccomp, value);
8f2c3a70
SH		 934}
935
5cda27c1
SH		 936static int set_config_execute_cmd(const char *key, const char *value,
937 struct lxc_conf *lxc_conf, void *data)
938{
939 return set_config_path_item(&lxc_conf->execute_cmd, value);
940}
941
713046e3 942static int set_config_init_cmd(const char *key, const char *value,
c7e27aaf 943 struct lxc_conf *lxc_conf, void *data)
67c660d0 944{
713046e3 945 return set_config_path_item(&lxc_conf->init_cmd, value);
67c660d0
SG		 946}
947
713046e3 948static int set_config_init_uid(const char *key, const char *value,
c7e27aaf 949 struct lxc_conf *lxc_conf, void *data)
72bb04e4 950{
d1e5d636
CB		 951 unsigned int init_uid;
952
663e9916 953 if (lxc_config_value_empty(value)) {
2e7cde40 954 lxc_conf->init_uid = 0;
fee80911 955 return 0;
2e7cde40 956 }
fee80911 957
d1e5d636
CB		 958 if (lxc_safe_uint(value, &init_uid) < 0)
959 return -1;
25a908b8 960
d1e5d636
CB		 961 lxc_conf->init_uid = init_uid;
962
72bb04e4
PT		 963 return 0;
964}
965
713046e3 966static int set_config_init_gid(const char *key, const char *value,
c7e27aaf 967 struct lxc_conf *lxc_conf, void *data)
72bb04e4 968{
d1e5d636
CB		 969 unsigned int init_gid;
970
663e9916 971 if (lxc_config_value_empty(value)) {
2debb6e6 972 lxc_conf->init_gid = 0;
a757cc7d 973 return 0;
2debb6e6 974 }
a757cc7d 975
d1e5d636
CB		 976 if (lxc_safe_uint(value, &init_gid) < 0)
977 return -1;
25a908b8 978
d1e5d636
CB		 979 lxc_conf->init_gid = init_gid;
980
72bb04e4
PT		 981 return 0;
982}
983
466c2e93 984static int set_config_hooks(const char *key, const char *value,
c7e27aaf 985 struct lxc_conf *lxc_conf, void *data)
26ddeedd 986{
7d0eb87e 987 char *copy;
72bb04e4 988
663e9916 989 if (lxc_config_value_empty(value))
7d0eb87e
SH		 990 return lxc_clear_hooks(lxc_conf, key);
991
a182feae 992 if (strcmp(key + 4, "hook") == 0) {
25a908b8 993 ERROR("lxc.hook must not have a value");
6b0d5538
SH		 994 return -1;
995 }
25a908b8 996
7d0eb87e 997 copy = strdup(value);
25a908b8 998 if (!copy)
26ddeedd 999 return -1;
504a2217 1000
a182feae 1001 if (strcmp(key + 9, "pre-start") == 0)
26ddeedd 1002 return add_hook(lxc_conf, LXCHOOK_PRESTART, copy);
08dd2805
SH		 1003 else if (strcmp(key + 9, "start-host") == 0)
1004 return add_hook(lxc_conf, LXCHOOK_START_HOST, copy);
a182feae 1005 else if (strcmp(key + 9, "pre-mount") == 0)
5ea6163a 1006 return add_hook(lxc_conf, LXCHOOK_PREMOUNT, copy);
a182feae 1007 else if (strcmp(key + 9, "autodev") == 0)
f7bee6c6 1008 return add_hook(lxc_conf, LXCHOOK_AUTODEV, copy);
a182feae 1009 else if (strcmp(key + 9, "mount") == 0)
26ddeedd 1010 return add_hook(lxc_conf, LXCHOOK_MOUNT, copy);
a182feae 1011 else if (strcmp(key + 9, "start") == 0)
26ddeedd 1012 return add_hook(lxc_conf, LXCHOOK_START, copy);
a182feae 1013 else if (strcmp(key + 9, "stop") == 0)
52492063 1014 return add_hook(lxc_conf, LXCHOOK_STOP, copy);
a182feae 1015 else if (strcmp(key + 9, "post-stop") == 0)
26ddeedd 1016 return add_hook(lxc_conf, LXCHOOK_POSTSTOP, copy);
a182feae 1017 else if (strcmp(key + 9, "clone") == 0)
148e91f5 1018 return add_hook(lxc_conf, LXCHOOK_CLONE, copy);
a182feae 1019 else if (strcmp(key + 9, "destroy") == 0)
37cf711b 1020 return add_hook(lxc_conf, LXCHOOK_DESTROY, copy);
504a2217 1021
26ddeedd
SH		 1022 free(copy);
1023 return -1;
1024}
1025
713046e3 1026static int set_config_personality(const char *key, const char *value,
c7e27aaf 1027 struct lxc_conf *lxc_conf, void *data)
cccc74b5 1028{
525f0002 1029 signed long personality = lxc_config_parse_arch(value);
cccc74b5 1030
525f0002
CS		 1031 if (personality >= 0)
1032 lxc_conf->personality = personality;
1033 else
25a908b8 1034 WARN("Unsupported personality \"%s\"", value);
970ab589
DL		 1035
1036 return 0;
cccc74b5
DL		 1037}
1038
232763d6
CB		 1039static int set_config_pty_max(const char *key, const char *value,
1040 struct lxc_conf *lxc_conf, void *data)
10db618d 1041{
663e9916 1042 if (lxc_config_value_empty(value)) {
ec200ce9 1043 lxc_conf->pts = 0;
884a4580 1044 return 0;
ec200ce9 1045 }
884a4580 1046
17919969
CB		 1047 if (lxc_safe_uint(value, &lxc_conf->pts) < 0)
1048 return -1;
10db618d 1049
1050 return 0;
1051}
1052
a182feae
CB		 1053/* We only need to check whether the first byte of the key after the lxc.start.
1054 * prefix matches our expectations since they fortunately all start with a
1055 * different letter. If anything was wrong with the key we would have already
1056 * noticed when the callback was called.
1057 */
713046e3 1058static int set_config_start(const char *key, const char *value,
c7e27aaf 1059 struct lxc_conf *lxc_conf, void *data)
ee1e7aa0 1060{
ebb80f95
CB		 1061 bool is_empty;
1062
663e9916 1063 is_empty = lxc_config_value_empty(value);
ebb80f95 1064
a182feae 1065 if (*(key + 10) == 'a') { /* lxc.start.auto */
ebb80f95
CB		 1066 if (is_empty) {
1067 lxc_conf->start_auto = 0;
1068 return 0;
1069 }
61ff8fc8 1070
3590152f
CB		 1071 if (lxc_safe_uint(value, &lxc_conf->start_auto) < 0)
1072 return -1;
ebb80f95 1073
3590152f
CB		 1074 if (lxc_conf->start_auto > 1)
1075 return -1;
ebb80f95 1076
ee1e7aa0 1077 return 0;
a182feae 1078 } else if (*(key + 10) == 'd') { /* lxc.start.delay */
ebb80f95
CB		 1079 if (is_empty) {
1080 lxc_conf->start_delay = 0;
1081 return 0;
1082 }
1083
ebb80f95 1084 return lxc_safe_uint(value, &lxc_conf->start_delay);
a182feae 1085 } else if (*(key + 10) == 'o') { /* lxc.start.order */
ebb80f95
CB		 1086 if (is_empty) {
1087 lxc_conf->start_order = 0;
1088 return 0;
1089 }
1090
ebb80f95 1091 return lxc_safe_int(value, &lxc_conf->start_order);
ee1e7aa0 1092 }
ebb80f95 1093
ee1e7aa0
SG		 1094 return -1;
1095}
1096
713046e3 1097static int set_config_monitor(const char *key, const char *value,
c7e27aaf 1098 struct lxc_conf *lxc_conf, void *data)
a8dfe4e0 1099{
663e9916 1100 if (lxc_config_value_empty(value)) {
4ad9cd26 1101 lxc_conf->monitor_unshare = 0;
a8dfe4e0
WB		 1102 return 0;
1103 }
4ad9cd26 1104
a182feae 1105 if (strcmp(key + 12, "unshare") == 0)
4ad9cd26
CB		 1106 return lxc_safe_uint(value, &lxc_conf->monitor_unshare);
1107
a8dfe4e0
WB		 1108 return -1;
1109}
1110
713046e3 1111static int set_config_group(const char *key, const char *value,
c7e27aaf 1112 struct lxc_conf *lxc_conf, void *data)
ee1e7aa0
SG		 1113{
1114 char *groups, *groupptr, *sptr, *token;
1115 struct lxc_list *grouplist;
1116 int ret = -1;
1117
663e9916 1118 if (lxc_config_value_empty(value))
ee1e7aa0
SG		 1119 return lxc_clear_groups(lxc_conf);
1120
1121 groups = strdup(value);
25a908b8 1122 if (!groups)
ee1e7aa0 1123 return -1;
ee1e7aa0 1124
25a908b8
CB		 1125 /* In case several groups are specified in a single line split these
1126 * groups in a single element for the list.
504a2217
CB		 1127 */
1128 for (groupptr = groups;; groupptr = NULL) {
d028235d
SG		 1129 token = strtok_r(groupptr, " \t", &sptr);
1130 if (!token) {
ee1e7aa0 1131 ret = 0;
d028235d 1132 break;
ee1e7aa0
SG		 1133 }
1134
1135 grouplist = malloc(sizeof(*grouplist));
25a908b8 1136 if (!grouplist)
ee1e7aa0 1137 break;
ee1e7aa0
SG		 1138
1139 grouplist->elem = strdup(token);
1140 if (!grouplist->elem) {
ee1e7aa0
SG		 1141 free(grouplist);
1142 break;
1143 }
1144
1145 lxc_list_add_tail(&lxc_conf->groups, grouplist);
d028235d 1146 }
ee1e7aa0
SG		 1147
1148 free(groups);
ee1e7aa0
SG		 1149 return ret;
1150}
1151
713046e3 1152static int set_config_environment(const char *key, const char *value,
c7e27aaf 1153 struct lxc_conf *lxc_conf, void *data)
7c661726
MP		 1154{
1155 struct lxc_list *list_item = NULL;
1156
663e9916 1157 if (lxc_config_value_empty(value))
ab799c0b
SG		 1158 return lxc_clear_environment(lxc_conf);
1159
7c661726
MP		 1160 list_item = malloc(sizeof(*list_item));
1161 if (!list_item)
504a2217 1162 goto on_error;
7c661726
MP		 1163
1164 list_item->elem = strdup(value);
1165
1166 if (!list_item->elem)
504a2217 1167 goto on_error;
7c661726
MP		 1168
1169 lxc_list_add_tail(&lxc_conf->environment, list_item);
1170
1171 return 0;
1172
504a2217 1173on_error:
f10fad2f 1174 free(list_item);
7c661726
MP		 1175 return -1;
1176}
1177
fe1c5887
CB		 1178static int set_config_tty_max(const char *key, const char *value,
1179 struct lxc_conf *lxc_conf, void *data)
b0a33c1e 1180{
663e9916 1181 if (lxc_config_value_empty(value)) {
cb508ee8 1182 lxc_conf->tty = 0;
fb12b12a 1183 return 0;
cb508ee8 1184 }
fb12b12a 1185
cb508ee8 1186 return lxc_safe_uint(value, &lxc_conf->tty);
b0a33c1e 1187}
1188
42e53c29 1189static int set_config_tty_dir(const char *key, const char *value,
c7e27aaf 1190 struct lxc_conf *lxc_conf, void *data)
7c6ef2a2 1191{
504a2217
CB		 1192 return set_config_string_item_max(&lxc_conf->ttydir, value,
1193 NAME_MAX + 1);
7c6ef2a2
SH		 1194}
1195
953fe44f
CB		 1196static int set_config_apparmor_profile(const char *key, const char *value,
1197 struct lxc_conf *lxc_conf, void *data)
e075f5d9 1198{
713046e3 1199 return set_config_string_item(&lxc_conf->lsm_aa_profile, value);
fe4de9a6
DE		 1200}
1201
953fe44f
CB		 1202static int set_config_apparmor_allow_incomplete(const char *key,
1203 const char *value,
1204 struct lxc_conf *lxc_conf,
1205 void *data)
7aff4f43 1206{
663e9916 1207 if (lxc_config_value_empty(value)) {
cccfa758 1208 lxc_conf->lsm_aa_allow_incomplete = 0;
a678e9fa 1209 return 0;
cccfa758 1210 }
a678e9fa 1211
a56e2df9
CB		 1212 if (lxc_safe_uint(value, &lxc_conf->lsm_aa_allow_incomplete) < 0)
1213 return -1;
7aff4f43 1214
25a908b8 1215 if (lxc_conf->lsm_aa_allow_incomplete > 1)
a56e2df9 1216 return -1;
7aff4f43
SH		 1217
1218 return 0;
1219}
1220
953fe44f
CB		 1221static int set_config_selinux_context(const char *key, const char *value,
1222 struct lxc_conf *lxc_conf, void *data)
fe4de9a6 1223{
713046e3 1224 return set_config_string_item(&lxc_conf->lsm_se_context, value);
e075f5d9 1225}
e075f5d9 1226
46cc906d 1227static int set_config_log_file(const char *key, const char *value,
c7e27aaf 1228 struct lxc_conf *c, void *data)
4a85ce2a 1229{
6d03d92a
DE		 1230 int ret;
1231
663e9916 1232 if (lxc_config_value_empty(value)) {
0d601acb
CB		 1233 free(c->logfile);
1234 c->logfile = NULL;
1235 return 0;
1236 }
1237
1238 /* Store these values in the lxc_conf, and then try to set for actual
504a2217
CB		 1239 * current logging.
1240 */
713046e3 1241 ret = set_config_path_item(&c->logfile, value);
6d03d92a 1242 if (ret == 0)
858377e4 1243 ret = lxc_log_set_file(&c->logfd, c->logfile);
25a908b8 1244
6d03d92a 1245 return ret;
4a85ce2a
SH		 1246}
1247
46cc906d 1248static int set_config_log_level(const char *key, const char *value,
c7e27aaf 1249 struct lxc_conf *lxc_conf, void *data)
4a85ce2a 1250{
9ea87d5d
SH		 1251 int newlevel;
1252
663e9916 1253 if (lxc_config_value_empty(value)) {
4b73005c 1254 lxc_conf->loglevel = LXC_LOG_LEVEL_NOTSET;
4a85ce2a 1255 return 0;
575b9745 1256 }
4a85ce2a 1257
a56e2df9
CB		 1258 if (value[0] >= '0' && value[0] <= '9') {
1259 if (lxc_safe_int(value, &newlevel) < 0)
1260 return -1;
1261 } else {
9ea87d5d 1262 newlevel = lxc_log_priority_to_int(value);
a56e2df9 1263 }
575b9745 1264
504a2217 1265 /* Store these values in the lxc_conf, and then try to set for actual
575b9745
CB		 1266 * current logging.
1267 */
b40a606e 1268 lxc_conf->loglevel = newlevel;
858377e4 1269 return lxc_log_set_level(&lxc_conf->loglevel, newlevel);
4a85ce2a
SH		 1270}
1271
713046e3 1272static int set_config_autodev(const char *key, const char *value,
c7e27aaf 1273 struct lxc_conf *lxc_conf, void *data)
c6883f38 1274{
663e9916 1275 if (lxc_config_value_empty(value)) {
1045031e 1276 lxc_conf->autodev = 0;
180abbc0 1277 return 0;
1045031e 1278 }
180abbc0 1279
ff6cb4ed
CB		 1280 if (lxc_safe_uint(value, &lxc_conf->autodev) < 0)
1281 return -1;
c6883f38 1282
25a908b8 1283 if (lxc_conf->autodev > 1)
ff6cb4ed 1284 return -1;
c6883f38
SH		 1285
1286 return 0;
1287}
1288
a84b9932
AV		 1289static int sig_num(const char *sig)
1290{
f2e539b3 1291 unsigned int signum;
a84b9932 1292
f2e539b3 1293 if (lxc_safe_uint(sig, &signum) < 0)
a84b9932 1294 return -1;
f2e539b3
CB		 1295
1296 return signum;
a84b9932
AV		 1297}
1298
1299static int rt_sig_num(const char *signame)
1300{
504a2217 1301 int rtmax = 0, sig_n = 0;
a84b9932
AV		 1302
1303 if (strncasecmp(signame, "max-", 4) == 0) {
1304 rtmax = 1;
1305 }
504a2217 1306
a84b9932
AV		 1307 signame += 4;
1308 if (!isdigit(*signame))
1309 return -1;
504a2217 1310
a84b9932
AV		 1311 sig_n = sig_num(signame);
1312 sig_n = rtmax ? SIGRTMAX - sig_n : SIGRTMIN + sig_n;
1313 if (sig_n > SIGRTMAX || sig_n < SIGRTMIN)
1314 return -1;
504a2217 1315
a84b9932
AV		 1316 return sig_n;
1317}
1318
504a2217
CB		 1319static int sig_parse(const char *signame)
1320{
84760c11 1321 size_t n;
a84b9932
AV		 1322
1323 if (isdigit(*signame)) {
1324 return sig_num(signame);
1325 } else if (strncasecmp(signame, "sig", 3) == 0) {
1326 signame += 3;
1327 if (strncasecmp(signame, "rt", 2) == 0)
1328 return rt_sig_num(signame + 2);
1329 for (n = 0; n < sizeof(signames) / sizeof((signames)[0]); n++) {
504a2217 1330 if (strcasecmp(signames[n].name, signame) == 0)
a84b9932
AV		 1331 return signames[n].num;
1332 }
1333 }
504a2217 1334
a84b9932
AV		 1335 return -1;
1336}
1337
55c84efc 1338static int set_config_signal_halt(const char *key, const char *value,
c7e27aaf 1339 struct lxc_conf *lxc_conf, void *data)
f0f1d8c0 1340{
62a085fb 1341 int sig_n;
f0f1d8c0 1342
663e9916 1343 if (lxc_config_value_empty(value)) {
c1a64603 1344 lxc_conf->haltsignal = 0;
955912f0 1345 return 0;
c1a64603 1346 }
955912f0 1347
62a085fb 1348 sig_n = sig_parse(value);
f0f1d8c0
DE		 1349 if (sig_n < 0)
1350 return -1;
25a908b8 1351
f0f1d8c0
DE		 1352 lxc_conf->haltsignal = sig_n;
1353
1354 return 0;
1355}
1356
55c84efc 1357static int set_config_signal_reboot(const char *key, const char *value,
c7e27aaf 1358 struct lxc_conf *lxc_conf, void *data)
dd267776 1359{
9d7e7587 1360 int sig_n;
dd267776 1361
663e9916 1362 if (lxc_config_value_empty(value)) {
18fcee44 1363 lxc_conf->rebootsignal = 0;
9d7e7587 1364 return 0;
18fcee44 1365 }
9d7e7587
CB		 1366
1367 sig_n = sig_parse(value);
dd267776
BP		 1368 if (sig_n < 0)
1369 return -1;
25a908b8 1370
dd267776
BP		 1371 lxc_conf->rebootsignal = sig_n;
1372
1373 return 0;
1374}
1375
55c84efc 1376static int set_config_signal_stop(const char *key, const char *value,
c7e27aaf 1377 struct lxc_conf *lxc_conf, void *data)
a84b9932 1378{
6ca6aedd 1379 int sig_n;
a84b9932 1380
663e9916 1381 if (lxc_config_value_empty(value)) {
4100d1a7 1382 lxc_conf->stopsignal = 0;
6ca6aedd 1383 return 0;
4100d1a7 1384 }
6ca6aedd
CB		 1385
1386 sig_n = sig_parse(value);
a84b9932
AV		 1387 if (sig_n < 0)
1388 return -1;
25a908b8 1389
a84b9932
AV		 1390 lxc_conf->stopsignal = sig_n;
1391
1392 return 0;
1393}
1394
43654d34
CB		 1395static int set_config_cgroup_controller(const char *key, const char *value,
1396 struct lxc_conf *lxc_conf, void *data)
576f946d 1397{
576f946d 1398 char *subkey;
504a2217 1399 char *token = "lxc.cgroup.";
bf83c5b9
MS		 1400 struct lxc_list *cglist = NULL;
1401 struct lxc_cgroup *cgelem = NULL;
576f946d 1402
663e9916 1403 if (lxc_config_value_empty(value))
7d0eb87e
SH		 1404 return lxc_clear_cgroups(lxc_conf, key);
1405
576f946d 1406 subkey = strstr(key, token);
576f946d 1407 if (!subkey)
1408 return -1;
1409
1410 if (!strlen(subkey))
1411 return -1;
1412
1413 if (strlen(subkey) == strlen(token))
1414 return -1;
a871ff6b 1415
576f946d 1416 subkey += strlen(token);
1417
1418 cglist = malloc(sizeof(*cglist));
1419 if (!cglist)
bf83c5b9 1420 goto out;
576f946d 1421
1422 cgelem = malloc(sizeof(*cgelem));
bf83c5b9
MS		 1423 if (!cgelem)
1424 goto out;
1425 memset(cgelem, 0, sizeof(*cgelem));
576f946d 1426
1427 cgelem->subsystem = strdup(subkey);
1428 cgelem->value = strdup(value);
bf83c5b9
MS		 1429
1430 if (!cgelem->subsystem || !cgelem->value)
1431 goto out;
1432
576f946d 1433 cglist->elem = cgelem;
1434
94d12f0a 1435 lxc_list_add_tail(&lxc_conf->cgroup, cglist);
576f946d 1436
1437 return 0;
bf83c5b9
MS		 1438
1439out:
f10fad2f 1440 free(cglist);
bf83c5b9 1441 if (cgelem) {
f10fad2f 1442 free(cgelem->subsystem);
f10fad2f 1443 free(cgelem->value);
bf83c5b9
MS		 1444 free(cgelem);
1445 }
1446
1447 return -1;
576f946d 1448}
1449
43654d34
CB		 1450static int set_config_cgroup_dir(const char *key, const char *value,
1451 struct lxc_conf *lxc_conf, void *data)
1452{
1453 if (lxc_config_value_empty(value))
1454 return clr_config_cgroup_dir(key, lxc_conf, NULL);
1455
43654d34
CB		 1456 return set_config_string_item(&lxc_conf->cgroup_meta.dir, value);
1457}
1458
240d4b74 1459static int set_config_prlimit(const char *key, const char *value,
c7e27aaf 1460 struct lxc_conf *lxc_conf, void *data)
c6d09e15 1461{
c6d09e15
WB		 1462 struct lxc_list *iter;
1463 struct rlimit limit;
71460831 1464 rlim_t limit_value;
504a2217
CB		 1465 struct lxc_list *limlist = NULL;
1466 struct lxc_limit *limelem = NULL;
c6d09e15 1467
663e9916 1468 if (lxc_config_value_empty(value))
c6d09e15
WB		 1469 return lxc_clear_limits(lxc_conf, key);
1470
240d4b74 1471 if (strncmp(key, "lxc.prlimit.", sizeof("lxc.prlimit.") - 1) != 0)
c6d09e15
WB		 1472 return -1;
1473
240d4b74 1474 key += sizeof("lxc.prlimit.") - 1;
c6d09e15
WB		 1475
1476 /* soft limit comes first in the value */
1477 if (!parse_limit_value(&value, &limit_value))
1478 return -1;
1479 limit.rlim_cur = limit_value;
1480
1481 /* skip spaces and a colon */
1482 while (isspace(*value))
1483 ++value;
504a2217 1484
c6d09e15
WB		 1485 if (*value == ':')
1486 ++value;
1487 else if (*value) /* any other character is an error here */
1488 return -1;
504a2217 1489
c6d09e15
WB		 1490 while (isspace(*value))
1491 ++value;
1492
1493 /* optional hard limit */
1494 if (*value) {
1495 if (!parse_limit_value(&value, &limit_value))
1496 return -1;
1497 limit.rlim_max = limit_value;
504a2217 1498
c6d09e15
WB		 1499 /* check for trailing garbage */
1500 while (isspace(*value))
1501 ++value;
504a2217 1502
c6d09e15
WB		 1503 if (*value)
1504 return -1;
1505 } else {
1506 /* a single value sets both hard and soft limit */
1507 limit.rlim_max = limit.rlim_cur;
1508 }
1509
1510 /* find existing list element */
504a2217
CB		 1511 lxc_list_for_each(iter, &lxc_conf->limits)
1512 {
c6d09e15
WB		 1513 limelem = iter->elem;
1514 if (!strcmp(key, limelem->resource)) {
1515 limelem->limit = limit;
1516 return 0;
1517 }
1518 }
1519
1520 /* allocate list element */
1521 limlist = malloc(sizeof(*limlist));
1522 if (!limlist)
1523 goto out;
2e6e3feb 1524
c6d09e15
WB		 1525 limelem = malloc(sizeof(*limelem));
1526 if (!limelem)
1527 goto out;
1528 memset(limelem, 0, sizeof(*limelem));
1529
1530 limelem->resource = strdup(key);
1531 if (!limelem->resource)
1532 goto out;
1533 limelem->limit = limit;
1534
1535 limlist->elem = limelem;
1536
1537 lxc_list_add_tail(&lxc_conf->limits, limlist);
1538
1539 return 0;
1540
1541out:
1542 free(limlist);
1543 if (limelem) {
1544 free(limelem->resource);
1545 free(limelem);
1546 }
1547 return -1;
1548}
1549
5014ff2e 1550static int set_config_idmaps(const char *key, const char *value,
c7e27aaf 1551 struct lxc_conf *lxc_conf, void *data)
f6d3e3e4 1552{
251d0d2a 1553 unsigned long hostid, nsid, range;
f6d3e3e4 1554 char type;
0b843d35 1555 int ret;
34a7a4c6
CB		 1556 struct lxc_list *idmaplist = NULL;
1557 struct id_map *idmap = NULL;
f6d3e3e4 1558
663e9916 1559 if (lxc_config_value_empty(value))
7d0eb87e
SH		 1560 return lxc_clear_idmaps(lxc_conf);
1561
f6d3e3e4
SH		 1562 idmaplist = malloc(sizeof(*idmaplist));
1563 if (!idmaplist)
34a7a4c6 1564 goto on_error;
f6d3e3e4
SH		 1565
1566 idmap = malloc(sizeof(*idmap));
1567 if (!idmap)
34a7a4c6 1568 goto on_error;
f6d3e3e4
SH		 1569 memset(idmap, 0, sizeof(*idmap));
1570
0b843d35
CB		 1571 ret = parse_idmaps(value, &type, &nsid, &hostid, &range);
1572 if (ret < 0)
34a7a4c6
CB		 1573 goto on_error;
1574
25a908b8 1575 INFO("Read uid map: type %c nsid %lu hostid %lu range %lu", type, nsid, hostid, range);
ac7725e7 1576 if (type == 'u')
f6d3e3e4 1577 idmap->idtype = ID_TYPE_UID;
ac7725e7 1578 else if (type == 'g')
f6d3e3e4
SH		 1579 idmap->idtype = ID_TYPE_GID;
1580 else
34a7a4c6 1581 goto on_error;
7e60c3f0 1582
f6d3e3e4
SH		 1583 idmap->hostid = hostid;
1584 idmap->nsid = nsid;
1585 idmap->range = range;
7e60c3f0
SG		 1586 idmaplist->elem = idmap;
1587 lxc_list_add_tail(&lxc_conf->id_map, idmaplist);
34a7a4c6 1588 idmap = NULL;
7e60c3f0 1589
f6d3e3e4
SH		 1590 return 0;
1591
34a7a4c6 1592on_error:
f10fad2f 1593 free(idmaplist);
34a7a4c6 1594 free(idmap);
f6d3e3e4
SH		 1595
1596 return -1;
1597}
1598
47148e96
CB		 1599static int set_config_mount_fstab(const char *key, const char *value,
1600 struct lxc_conf *lxc_conf, void *data)
d95db067 1601{
663e9916 1602 if (lxc_config_value_empty(value)) {
47148e96 1603 clr_config_mount_fstab(key, lxc_conf, NULL);
d9192f5d 1604 return -1;
46f3de30 1605 }
6f5685f0 1606
713046e3 1607 return set_config_path_item(&lxc_conf->fstab, value);
d95db067
DE		 1608}
1609
713046e3 1610static int set_config_mount_auto(const char *key, const char *value,
c7e27aaf 1611 struct lxc_conf *lxc_conf, void *data)
368bbc02
CS		 1612{
1613 char *autos, *autoptr, *sptr, *token;
368bbc02
CS		 1614 int i;
1615 int ret = -1;
504a2217
CB		 1616 static struct {
1617 const char *token;
1618 int mask;
1619 int flag;
1620 } allowed_auto_mounts[] = {
1621 { "proc", LXC_AUTO_PROC_MASK, LXC_AUTO_PROC_MIXED },
1622 { "proc:mixed", LXC_AUTO_PROC_MASK, LXC_AUTO_PROC_MIXED },
1623 { "proc:rw", LXC_AUTO_PROC_MASK, LXC_AUTO_PROC_RW },
1624 { "sys", LXC_AUTO_SYS_MASK, LXC_AUTO_SYS_MIXED },
1625 { "sys:ro", LXC_AUTO_SYS_MASK, LXC_AUTO_SYS_RO },
1626 { "sys:mixed", LXC_AUTO_SYS_MASK, LXC_AUTO_SYS_MIXED },
1627 { "sys:rw", LXC_AUTO_SYS_MASK, LXC_AUTO_SYS_RW },
1628 { "cgroup", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_NOSPEC },
1629 { "cgroup:mixed", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_MIXED },
1630 { "cgroup:ro", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_RO },
1631 { "cgroup:rw", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_RW },
1632 { "cgroup-full", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_FULL_NOSPEC },
1633 { "cgroup-full:mixed", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_FULL_MIXED },
1634 { "cgroup-full:ro", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_FULL_RO },
1635 { "cgroup-full:rw", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_FULL_RW },
25a908b8
CB		 1636 /* For adding anything that is just a single on/off, but has no
1637 * options: keep mask and flag identical and just define the enum
1638 * value as an unused bit so far
504a2217
CB		 1639 */
1640 { NULL, 0, 0 }
1641 };
368bbc02 1642
663e9916 1643 if (lxc_config_value_empty(value)) {
d9192f5d
SH		 1644 lxc_conf->auto_mounts = 0;
1645 return 0;
1646 }
368bbc02
CS		 1647
1648 autos = strdup(value);
25a908b8 1649 if (!autos)
368bbc02 1650 return -1;
368bbc02 1651
504a2217 1652 for (autoptr = autos;; autoptr = NULL) {
d028235d
SG		 1653 token = strtok_r(autoptr, " \t", &sptr);
1654 if (!token) {
368bbc02 1655 ret = 0;
d028235d 1656 break;
368bbc02
CS		 1657 }
1658
1659 for (i = 0; allowed_auto_mounts[i].token; i++) {
1660 if (!strcmp(allowed_auto_mounts[i].token, token))
1661 break;
1662 }
1663
1664 if (!allowed_auto_mounts[i].token) {
25a908b8 1665 ERROR("Invalid filesystem to automount \"%s\"", token);
368bbc02
CS		 1666 break;
1667 }
1668
b06b8511 1669 lxc_conf->auto_mounts &= ~allowed_auto_mounts[i].mask;
368bbc02 1670 lxc_conf->auto_mounts |= allowed_auto_mounts[i].flag;
d028235d 1671 }
368bbc02
CS		 1672
1673 free(autos);
368bbc02
CS		 1674 return ret;
1675}
1676
713046e3 1677static int set_config_mount(const char *key, const char *value,
c7e27aaf 1678 struct lxc_conf *lxc_conf, void *data)
e7938e9e 1679{
e7938e9e
MN		 1680 char *mntelem;
1681 struct lxc_list *mntlist;
1682
663e9916 1683 if (lxc_config_value_empty(value))
d9192f5d 1684 return lxc_clear_mount_entries(lxc_conf);
e7938e9e
MN		 1685
1686 mntlist = malloc(sizeof(*mntlist));
1687 if (!mntlist)
1688 return -1;
1689
1690 mntelem = strdup(value);
00b6be44
SH		 1691 if (!mntelem) {
1692 free(mntlist);
bf83c5b9 1693 return -1;
00b6be44 1694 }
e7938e9e
MN		 1695 mntlist->elem = mntelem;
1696
1697 lxc_list_add_tail(&lxc_conf->mount_list, mntlist);
1698
1699 return 0;
1700}
1701
713046e3 1702static int set_config_cap_keep(const char *key, const char *value,
c7e27aaf 1703 struct lxc_conf *lxc_conf, void *data)
1fb86a7c
SH		 1704{
1705 char *keepcaps, *keepptr, *sptr, *token;
1706 struct lxc_list *keeplist;
1707 int ret = -1;
1708
663e9916 1709 if (lxc_config_value_empty(value))
7d0eb87e 1710 return lxc_clear_config_keepcaps(lxc_conf);
1fb86a7c
SH		 1711
1712 keepcaps = strdup(value);
25a908b8 1713 if (!keepcaps)
1fb86a7c 1714 return -1;
1fb86a7c 1715
504a2217
CB		 1716 /* In case several capability keep is specified in a single line
1717 * split these caps in a single element for the list.
1718 */
1719 for (keepptr = keepcaps;; keepptr = NULL) {
d028235d
SG		 1720 token = strtok_r(keepptr, " \t", &sptr);
1721 if (!token) {
1fb86a7c 1722 ret = 0;
d028235d 1723 break;
1fb86a7c
SH		 1724 }
1725
7035407c
DE		 1726 if (!strcmp(token, "none"))
1727 lxc_clear_config_keepcaps(lxc_conf);
1728
1fb86a7c 1729 keeplist = malloc(sizeof(*keeplist));
25a908b8 1730 if (!keeplist)
1fb86a7c 1731 break;
1fb86a7c
SH		 1732
1733 keeplist->elem = strdup(token);
1734 if (!keeplist->elem) {
1fb86a7c
SH		 1735 free(keeplist);
1736 break;
1737 }
1738
1739 lxc_list_add_tail(&lxc_conf->keepcaps, keeplist);
d028235d 1740 }
1fb86a7c
SH		 1741
1742 free(keepcaps);
1743
1744 return ret;
1745}
1746
713046e3 1747static int set_config_cap_drop(const char *key, const char *value,
c7e27aaf 1748 struct lxc_conf *lxc_conf, void *data)
81810dd1 1749{
d95db067 1750 char *dropcaps, *dropptr, *sptr, *token;
81810dd1
DL		 1751 struct lxc_list *droplist;
1752 int ret = -1;
1753
663e9916 1754 if (lxc_config_value_empty(value))
7d0eb87e 1755 return lxc_clear_config_caps(lxc_conf);
81810dd1
DL		 1756
1757 dropcaps = strdup(value);
25a908b8 1758 if (!dropcaps)
81810dd1 1759 return -1;
81810dd1 1760
504a2217
CB		 1761 /* In case several capability drop is specified in a single line
1762 * split these caps in a single element for the list.
1763 */
1764 for (dropptr = dropcaps;; dropptr = NULL) {
d028235d
SG		 1765 token = strtok_r(dropptr, " \t", &sptr);
1766 if (!token) {
81810dd1 1767 ret = 0;
d028235d 1768 break;
81810dd1 1769 }
81810dd1
DL		 1770
1771 droplist = malloc(sizeof(*droplist));
25a908b8 1772 if (!droplist)
81810dd1 1773 break;
81810dd1
DL		 1774
1775 droplist->elem = strdup(token);
1776 if (!droplist->elem) {
81810dd1
DL		 1777 free(droplist);
1778 break;
1779 }
1780
1781 lxc_list_add_tail(&lxc_conf->caps, droplist);
d028235d 1782 }
81810dd1
DL		 1783
1784 free(dropcaps);
1785
1786 return ret;
1787}
1788
3aed4934
CB		 1789static int set_config_console_path(const char *key, const char *value,
1790 struct lxc_conf *lxc_conf, void *data)
28a4b0e5 1791{
713046e3 1792 return set_config_path_item(&lxc_conf->console.path, value);
28a4b0e5
DL		 1793}
1794
d91adfa6
CB		 1795static int set_config_console_rotate(const char *key, const char *value,
1796 struct lxc_conf *lxc_conf, void *data)
1797{
1798 if (lxc_config_value_empty(value)) {
1799 lxc_conf->console.log_rotate = 0;
1800 return 0;
1801 }
1802
1803 if (lxc_safe_uint(value, &lxc_conf->console.log_rotate) < 0)
1804 return -1;
1805
1806 if (lxc_conf->console.log_rotate > 1)
1807 return -1;
1808
1809 return 0;
1810}
1811
713046e3 1812static int set_config_console_logfile(const char *key, const char *value,
c7e27aaf 1813 struct lxc_conf *lxc_conf, void *data)
96f15ca1 1814{
713046e3 1815 return set_config_path_item(&lxc_conf->console.log_path, value);
96f15ca1
SH		 1816}
1817
28f3b1cd
CB		 1818static int set_config_console_buffer_size(const char *key, const char *value,
1819 struct lxc_conf *lxc_conf, void *data)
a04220de
CB		 1820{
1821 int ret;
1822 int64_t size;
28f3b1cd 1823 uint64_t buffer_size, pgsz;
a04220de
CB		 1824
1825 if (lxc_config_value_empty(value)) {
28f3b1cd 1826 lxc_conf->console.buffer_size = 0;
a04220de
CB		 1827 return 0;
1828 }
1829
1830 /* If the user specified "auto" the default log size is 2^17 = 128 Kib */
1831 if (!strcmp(value, "auto")) {
28f3b1cd 1832 lxc_conf->console.buffer_size = 1 << 17;
a04220de
CB		 1833 return 0;
1834 }
1835
1836 ret = parse_byte_size_string(value, &size);
1837 if (ret < 0)
1838 return -1;
1839
1840 if (size < 0)
1841 return -EINVAL;
1842
1843 /* must be at least a page size */
1844 pgsz = lxc_getpagesize();
1845 if ((uint64_t)size < pgsz) {
1846 NOTICE("Requested ringbuffer size for the console is %" PRId64
1847 " but must be at least %" PRId64
1848 " bytes. Setting ringbuffer size to %" PRId64 " bytes",
1849 size, pgsz, pgsz);
1850 size = pgsz;
1851 }
1852
28f3b1cd
CB		 1853 buffer_size = lxc_find_next_power2((uint64_t)size);
1854 if (buffer_size == 0)
a04220de
CB		 1855 return -EINVAL;
1856
28f3b1cd 1857 if (buffer_size != size)
a04220de 1858 NOTICE("Passed size was not a power of 2. Rounding log size to "
28f3b1cd 1859 "next power of two: %" PRIu64 " bytes", buffer_size);
a04220de 1860
28f3b1cd 1861 lxc_conf->console.buffer_size = buffer_size;
a04220de
CB		 1862 return 0;
1863}
1864
3a784510
CB		 1865static int set_config_console_buffer_logfile(const char *key, const char *value,
1866 struct lxc_conf *lxc_conf,
1867 void *data)
1868{
1869 return set_config_path_item(&lxc_conf->console.buffer_log_file, value);
1870}
1871
6b0d5538 1872int append_unexp_config_line(const char *line, struct lxc_conf *conf)
f979ac15 1873{
6b0d5538 1874 size_t len = conf->unexpanded_len, linelen = strlen(line);
f979ac15 1875
e6744e9b
SH		 1876 update_hwaddr(line);
1877
6b0d5538 1878 while (conf->unexpanded_alloced <= len + linelen + 2) {
504a2217
CB		 1879 char *tmp = realloc(conf->unexpanded_config,
1880 conf->unexpanded_alloced + 1024);
6b0d5538
SH		 1881 if (!tmp)
1882 return -1;
504a2217 1883
6b0d5538
SH		 1884 if (!conf->unexpanded_config)
1885 *tmp = '\0';
1886 conf->unexpanded_config = tmp;
1887 conf->unexpanded_alloced += 1024;
1888 }
1889 strcat(conf->unexpanded_config, line);
1890 conf->unexpanded_len += linelen;
504a2217 1891 if (line[linelen - 1] != '\n') {
6b0d5538
SH		 1892 strcat(conf->unexpanded_config, "\n");
1893 conf->unexpanded_len++;
f979ac15 1894 }
25a908b8 1895
f979ac15
SH		 1896 return 0;
1897}
1898
e1daebd9
SH		 1899static int do_includedir(const char *dirp, struct lxc_conf *lxc_conf)
1900{
74f96976 1901 struct dirent *direntp;
e1daebd9
SH		 1902 DIR *dir;
1903 char path[MAXPATHLEN];
504a2217
CB		 1904 int len;
1905 int ret = -1;
e1daebd9
SH		 1906
1907 dir = opendir(dirp);
25a908b8 1908 if (!dir)
e1daebd9 1909 return -1;
e1daebd9 1910
74f96976 1911 while ((direntp = readdir(dir))) {
e1daebd9
SH		 1912 const char *fnam;
1913 if (!direntp)
1914 break;
1915
1916 fnam = direntp->d_name;
1917 if (!strcmp(fnam, "."))
1918 continue;
1919
1920 if (!strcmp(fnam, ".."))
1921 continue;
1922
1923 len = strlen(fnam);
504a2217 1924 if (len < 6 || strncmp(fnam + len - 5, ".conf", 5) != 0)
e1daebd9 1925 continue;
25a908b8 1926
e1daebd9
SH		 1927 len = snprintf(path, MAXPATHLEN, "%s/%s", dirp, fnam);
1928 if (len < 0 || len >= MAXPATHLEN) {
e1daebd9
SH		 1929 ret = -1;
1930 goto out;
1931 }
1932
1933 ret = lxc_config_read(path, lxc_conf, true);
1934 if (ret < 0)
1935 goto out;
1936 }
1937 ret = 0;
1938
1939out:
25a908b8 1940 closedir(dir);
e1daebd9
SH		 1941
1942 return ret;
1943}
1944
973082f5 1945static int set_config_includefiles(const char *key, const char *value,
c7e27aaf 1946 struct lxc_conf *lxc_conf, void *data)
09ad6246 1947{
663e9916 1948 if (lxc_config_value_empty(value)) {
26471403 1949 clr_config_includefiles(key, lxc_conf, NULL);
616422f1 1950 return 0;
355c5701 1951 }
616422f1 1952
e1daebd9
SH		 1953 if (is_dir(value))
1954 return do_includedir(value, lxc_conf);
1955
6b0d5538 1956 return lxc_config_read(value, lxc_conf, true);
09ad6246
SH		 1957}
1958
7a96a068
CB		 1959static int set_config_rootfs_path(const char *key, const char *value,
1960 struct lxc_conf *lxc_conf, void *data)
c2cc9f0a 1961{
713046e3 1962 return set_config_path_item(&lxc_conf->rootfs.path, value);
c2cc9f0a 1963}
1964
713046e3 1965static int set_config_rootfs_mount(const char *key, const char *value,
c7e27aaf 1966 struct lxc_conf *lxc_conf, void *data)
23b7ea69 1967{
713046e3 1968 return set_config_path_item(&lxc_conf->rootfs.mount, value);
23b7ea69
DL		 1969}
1970
713046e3 1971static int set_config_rootfs_options(const char *key, const char *value,
c7e27aaf 1972 struct lxc_conf *lxc_conf, void *data)
a17b1e65 1973{
713046e3 1974 return set_config_string_item(&lxc_conf->rootfs.options, value);
a17b1e65
SG		 1975}
1976
713046e3 1977static int set_config_rootfs_backend(const char *key, const char *value,
c7e27aaf 1978 struct lxc_conf *lxc_conf, void *data)
bfd77214 1979{
f7ac4459 1980 return 0;
bfd77214
SH		 1981}
1982
b67771bc 1983static int set_config_uts_name(const char *key, const char *value,
c7e27aaf 1984 struct lxc_conf *lxc_conf, void *data)
c2cc9f0a 1985{
1986 struct utsname *utsname;
1987
663e9916 1988 if (lxc_config_value_empty(value)) {
b67771bc 1989 clr_config_uts_name(key, lxc_conf, NULL);
1939e73d 1990 return 0;
00cd8039 1991 }
1939e73d 1992
c2cc9f0a 1993 utsname = malloc(sizeof(*utsname));
25a908b8 1994 if (!utsname)
c2cc9f0a 1995 return -1;
c2cc9f0a 1996
1997 if (strlen(value) >= sizeof(utsname->nodename)) {
b6f24d54 1998 free(utsname);
c2cc9f0a 1999 return -1;
2000 }
2001
2002 strcpy(utsname->nodename, value);
f10fad2f 2003 free(lxc_conf->utsname);
c2cc9f0a 2004 lxc_conf->utsname = utsname;
2005
2006 return 0;
2007}
2008
28d9e29e
CB		 2009static int set_config_namespace(const char *key, const char *value,
2010 struct lxc_conf *lxc_conf, void *data)
2011{
2012 int ns_idx;
2013 const char *namespace;
2014
2015 if (lxc_config_value_empty(value))
2016 return clr_config_namespace(key, lxc_conf, data);
2017
2018 namespace = key + sizeof("lxc.namespace.") - 1;
2019 ns_idx = lxc_namespace_2_ns_idx(namespace);
2020 if (ns_idx < 0)
2021 return ns_idx;
2022
2023 return set_config_string_item(&lxc_conf->inherit_ns[ns_idx], value);
2024}
2025
6b0d5538
SH		 2026struct parse_line_conf {
2027 struct lxc_conf *conf;
2028 bool from_include;
2029};
4184c3e1 2030
7a7ff0c6 2031static int parse_line(char *buffer, void *data)
c2cc9f0a 2032{
504a2217 2033 char *dot, *key, *line, *linep, *value;
3b13691d
CB		 2034 bool empty_line;
2035 struct lxc_config_t *config;
504a2217 2036 int ret = 0;
3b13691d
CB		 2037 char *dup = buffer;
2038 struct parse_line_conf *plc = data;
c2cc9f0a 2039
3b13691d
CB		 2040 /* If there are newlines in the config file we should keep them. */
2041 empty_line = lxc_is_line_empty(dup);
2042 if (empty_line)
2043 dup = "\n";
c2cc9f0a 2044
25a908b8
CB		 2045 /* We have to dup the buffer otherwise, at the re-exec for reboot we
2046 * modified the original string on the stack by replacing '=' by '\0'
2047 * below.
91480a0f 2048 */
3b13691d 2049 linep = line = strdup(dup);
25a908b8 2050 if (!line)
81192358 2051 return -1;
91480a0f 2052
3b13691d
CB		 2053 if (!plc->from_include) {
2054 ret = append_unexp_config_line(line, plc->conf);
2055 if (ret < 0)
2056 goto on_error;
2057 }
2058
2059 if (empty_line)
2060 return 0;
6b0d5538 2061
b2718c72 2062 line += lxc_char_left_gc(line, strlen(line));
476d4cf1 2063
4184c3e1
SH		 2064 /* ignore comments */
2065 if (line[0] == '#')
3b13691d 2066 goto on_error;
476d4cf1 2067
6b0d5538
SH		 2068 /* martian option - don't add it to the config itself */
2069 if (strncmp(line, "lxc.", 4))
3b13691d 2070 goto on_error;
4184c3e1 2071
476d4cf1 2072 ret = -1;
c2cc9f0a 2073
3b13691d 2074 dot = strchr(line, '=');
c2cc9f0a 2075 if (!dot) {
3b13691d
CB		 2076 ERROR("Invalid configuration line: %s", line);
2077 goto on_error;
c2cc9f0a 2078 }
a871ff6b 2079
c2cc9f0a 2080 *dot = '\0';
2081 value = dot + 1;
2082
b2718c72 2083 key = line;
2084 key[lxc_char_right_gc(key, strlen(key))] = '\0';
c2cc9f0a 2085
b2718c72 2086 value += lxc_char_left_gc(value, strlen(value));
2087 value[lxc_char_right_gc(value, strlen(value))] = '\0';
c2cc9f0a 2088
bd878dee 2089 if (*value == '\'' || *value == '\"') {
25a908b8
CB		 2090 size_t len;
2091
2092 len = strlen(value);
504a2217
CB		 2093 if (len > 1 && value[len - 1] == *value) {
2094 value[len - 1] = '\0';
bd878dee
SB		 2095 value++;
2096 }
2097 }
2098
300df83e 2099 config = lxc_get_config(key);
c2cc9f0a 2100 if (!config) {
25a908b8 2101 ERROR("Unknown configuration key \"%s\"", key);
3b13691d 2102 goto on_error;
c2cc9f0a 2103 }
2104
7ec2e32a
CB		 2105 /* [START]: REMOVE IN LXC 3.0 */
2106 if (config->is_legacy_key && !plc->conf->contains_legacy_key) {
2107 plc->conf->contains_legacy_key = true;
70952c01
CB		 2108 if (getenv("LXC_UPDATE_CONFIG_FORMAT")) {
2109 /* Warn the user once loud and clear that there is at
2110 * least one legacy configuration item in the
2111 * configuration file and then an update is required.
2112 */
2113 fprintf(stderr, "The configuration file contains "
2114 "legacy configuration keys.\nPlease "
2115 "update your configuration file!\n");
2116 }
7ec2e32a
CB		 2117 }
2118 /* [END]: REMOVE IN LXC 3.0 */
2119
bbc079cf 2120 ret = config->set(key, value, plc->conf, NULL);
91480a0f 2121
3b13691d 2122on_error:
81192358 2123 free(linep);
91480a0f 2124 return ret;
c2cc9f0a 2125}
2126
74a3920a 2127static int lxc_config_readline(char *buffer, struct lxc_conf *conf)
af5b0155 2128{
6b0d5538
SH		 2129 struct parse_line_conf c;
2130
2131 c.conf = conf;
2132 c.from_include = false;
2133
2134 return parse_line(buffer, &c);
af5b0155
CLG		 2135}
2136
6b0d5538 2137int lxc_config_read(const char *file, struct lxc_conf *conf, bool from_include)
c2cc9f0a 2138{
25a908b8 2139 int ret;
6b0d5538
SH		 2140 struct parse_line_conf c;
2141
2142 c.conf = conf;
2143 c.from_include = from_include;
f979ac15 2144
25a908b8
CB		 2145 ret = access(file, R_OK);
2146 if (ret < 0)
f3ca99fd 2147 return -1;
6b0d5538 2148
25a908b8 2149 /* Catch only the top level config file name in the structure. */
504a2217 2150 if (!conf->rcfile)
76d0127f 2151 conf->rcfile = strdup(file);
f979ac15 2152
6b0d5538 2153 return lxc_file_for_each_line(file, parse_line, &c);
c2cc9f0a 2154}
62e46035 2155
504a2217 2156int lxc_config_define_add(struct lxc_list *defines, char *arg)
62e46035
CLG		 2157{
2158 struct lxc_list *dent;
2159
2160 dent = malloc(sizeof(struct lxc_list));
2161 if (!dent)
2162 return -1;
2163
2164 dent->elem = arg;
2165 lxc_list_add_tail(defines, dent);
2166 return 0;
2167}
2168
226a18d6 2169int lxc_config_define_load(struct lxc_list *defines, struct lxc_conf *conf)
62e46035 2170{
504a2217 2171 struct lxc_list *it, *next;
62e46035
CLG		 2172 int ret = 0;
2173
2174 lxc_list_for_each(it, defines) {
2175 ret = lxc_config_readline(it->elem, conf);
2176 if (ret)
2177 break;
2178 }
2179
9ebb03ad 2180 lxc_list_for_each_safe(it, defines, next) {
62e46035
CLG		 2181 lxc_list_del(it);
2182 free(it);
2183 }
2184
2185 return ret;
2186}
525f0002
CS		 2187
2188signed long lxc_config_parse_arch(const char *arch)
2189{
504a2217
CB		 2190#if HAVE_SYS_PERSONALITY_H
2191 size_t i;
525f0002
CS		 2192 struct per_name {
2193 char *name;
2194 unsigned long per;
bb8d8207 2195 } pername[] = {
504a2217
CB		 2196 { "x86", PER_LINUX32 },
2197 { "linux32", PER_LINUX32 },
2198 { "i386", PER_LINUX32 },
2199 { "i486", PER_LINUX32 },
2200 { "i586", PER_LINUX32 },
2201 { "i686", PER_LINUX32 },
2202 { "athlon", PER_LINUX32 },
2203 { "mips", PER_LINUX32 },
2204 { "mipsel", PER_LINUX32 },
2205 { "ppc", PER_LINUX32 },
2206 { "arm", PER_LINUX32 },
2207 { "armv7l", PER_LINUX32 },
2208 { "armhf", PER_LINUX32 },
2209 { "armel", PER_LINUX32 },
2210 { "powerpc", PER_LINUX32 },
2211 { "linux64", PER_LINUX },
2212 { "x86_64", PER_LINUX },
2213 { "amd64", PER_LINUX },
2214 { "mips64", PER_LINUX },
2215 { "mips64el", PER_LINUX },
2216 { "ppc64", PER_LINUX },
2217 { "ppc64le", PER_LINUX },
2218 { "ppc64el", PER_LINUX },
2219 { "powerpc64", PER_LINUX },
2220 { "s390x", PER_LINUX },
2221 { "aarch64", PER_LINUX },
2222 { "arm64", PER_LINUX },
525f0002
CS		 2223 };
2224 size_t len = sizeof(pername) / sizeof(pername[0]);
2225
525f0002
CS		 2226 for (i = 0; i < len; i++) {
2227 if (!strcmp(pername[i].name, arch))
504a2217 2228 return pername[i].per;
525f0002 2229 }
504a2217 2230#endif
525f0002
CS		 2231
2232 return -1;
2233}
72d0e1cb 2234
4d69b293
NK		 2235int lxc_fill_elevated_privileges(char *flaglist, int *flags)
2236{
2237 char *token, *saveptr = NULL;
2238 int i, aflag;
504a2217
CB		 2239 struct {
2240 const char *token;
2241 int flag;
2242 } all_privs[] = {
2243 { "CGROUP", LXC_ATTACH_MOVE_TO_CGROUP },
2244 { "CAP", LXC_ATTACH_DROP_CAPABILITIES },
2245 { "LSM", LXC_ATTACH_LSM_EXEC },
2246 { NULL, 0 }
4d69b293
NK		 2247 };
2248
2249 if (!flaglist) {
504a2217 2250 /* For the sake of backward compatibility, drop all privileges
25a908b8 2251 * if none is specified.
504a2217 2252 */
25a908b8 2253 for (i = 0; all_privs[i].token; i++)
d028235d 2254 *flags |= all_privs[i].flag;
25a908b8 2255
4d69b293
NK		 2256 return 0;
2257 }
2258
2259 token = strtok_r(flaglist, "|", &saveptr);
2260 while (token) {
2261 aflag = -1;
25a908b8 2262 for (i = 0; all_privs[i].token; i++)
4d69b293
NK		 2263 if (!strcmp(all_privs[i].token, token))
2264 aflag = all_privs[i].flag;
4d69b293
NK		 2265 if (aflag < 0)
2266 return -1;
2267
2268 *flags |= aflag;
2269
2270 token = strtok_r(NULL, "|", &saveptr);
2271 }
504a2217 2272
4d69b293
NK		 2273 return 0;
2274}
2275
504a2217 2276/* Write out a configuration file. */
72d0e1cb
SG		 2277void write_config(FILE *fout, struct lxc_conf *c)
2278{
6b0d5538 2279 int ret;
504a2217 2280 size_t len = c->unexpanded_len;
72d0e1cb 2281
6b0d5538
SH		 2282 if (!len)
2283 return;
504a2217 2284
6b0d5538
SH		 2285 ret = fwrite(c->unexpanded_config, 1, len, fout);
2286 if (ret != len)
25a908b8 2287 SYSERROR("Failed to write configuration file");
6b0d5538 2288}
f979ac15 2289
504a2217
CB		 2290bool do_append_unexp_config_line(struct lxc_conf *conf, const char *key,
2291 const char *v)
6b0d5538
SH		 2292{
2293 int ret;
151d2da2
CB		 2294 size_t len;
2295 char *tmp;
4184c3e1 2296
151d2da2
CB		 2297 len = strlen(key) + strlen(v) + 4;
2298 tmp = alloca(len);
2299
663e9916 2300 if (lxc_config_value_empty(v))
151d2da2
CB		 2301 ret = snprintf(tmp, len, "%s =", key);
2302 else
2303 ret = snprintf(tmp, len, "%s = %s", key, v);
6b0d5538
SH		 2304 if (ret < 0 || ret >= len)
2305 return false;
2306
2307 /* Save the line verbatim into unexpanded_conf */
2308 if (append_unexp_config_line(tmp, conf))
2309 return false;
2310
2311 return true;
2312}
2313
504a2217
CB		 2314void clear_unexp_config_line(struct lxc_conf *conf, const char *key,
2315 bool rm_subkeys)
6b0d5538 2316{
504a2217
CB		 2317 char *lend;
2318 char *lstart = conf->unexpanded_config;
6b0d5538
SH		 2319
2320 if (!conf->unexpanded_config)
2321 return;
504a2217 2322
6b0d5538
SH		 2323 while (*lstart) {
2324 lend = strchr(lstart, '\n');
2325 char v;
2326 if (!lend)
2327 lend = lstart + strlen(lstart);
2328 else
2329 lend++;
2330 if (strncmp(lstart, key, strlen(key)) != 0) {
2331 lstart = lend;
2332 continue;
5f62730e 2333 }
6b0d5538
SH		 2334 if (!rm_subkeys) {
2335 v = lstart[strlen(key)];
2336 if (!isspace(v) && v != '=') {
2337 lstart = lend;
2338 continue;
2339 }
5f62730e 2340 }
6b0d5538
SH		 2341 conf->unexpanded_len -= (lend - lstart);
2342 if (*lend == '\0') {
2343 *lstart = '\0';
2344 return;
fd986e08 2345 }
504a2217 2346 memmove(lstart, lend, strlen(lend) + 1);
fd986e08 2347 }
6b0d5538
SH		 2348}
2349
329b3625
CB		 2350bool clone_update_unexp_ovl_paths(struct lxc_conf *conf, const char *oldpath,
2351 const char *newpath, const char *oldname,
2352 const char *newname, const char *ovldir)
2353{
329b3625 2354 int ret;
504a2217
CB		 2355 char *lend, *newdir, *olddir, *p, *q;
2356 size_t newdirlen, olddirlen;
329b3625 2357 char *lstart = conf->unexpanded_config;
504a2217 2358 const char *key = "lxc.mount.entry";
329b3625 2359
504a2217
CB		 2360 olddirlen = strlen(ovldir) + strlen(oldpath) + strlen(oldname) + 2;
2361 olddir = alloca(olddirlen + 1);
2362 ret = snprintf(olddir, olddirlen + 1, "%s=%s/%s", ovldir, oldpath,
2363 oldname);
25a908b8 2364 if (ret < 0 || ret >= olddirlen + 1)
329b3625 2365 return false;
504a2217
CB		 2366
2367 newdirlen = strlen(ovldir) + strlen(newpath) + strlen(newname) + 2;
2368 newdir = alloca(newdirlen + 1);
2369 ret = snprintf(newdir, newdirlen + 1, "%s=%s/%s", ovldir, newpath,
2370 newname);
25a908b8 2371 if (ret < 0 || ret >= newdirlen + 1)
329b3625 2372 return false;
504a2217 2373
329b3625
CB		 2374 if (!conf->unexpanded_config)
2375 return true;
504a2217 2376
329b3625
CB		 2377 while (*lstart) {
2378 lend = strchr(lstart, '\n');
2379 if (!lend)
2380 lend = lstart + strlen(lstart);
2381 else
2382 lend++;
504a2217 2383
329b3625 2384 if (strncmp(lstart, key, strlen(key)) != 0)
504a2217
CB		 2385 goto next;
2386
329b3625
CB		 2387 p = strchr(lstart + strlen(key), '=');
2388 if (!p)
504a2217 2389 goto next;
329b3625 2390 p++;
504a2217 2391
329b3625
CB		 2392 while (isblank(*p))
2393 p++;
504a2217 2394
329b3625 2395 if (p >= lend)
504a2217
CB		 2396 goto next;
2397
2398 /* Whenever an lxc.mount.entry entry is found in a line we check
2399 * if the substring " overlay" or the substring " aufs" is
2400 * present before doing any further work. We check for "
2401 * overlay" and " aufs" since both substrings need to have at
2402 * least one space before them in a valid overlay
2403 * lxc.mount.entry (/A B overlay). When the space before is
2404 * missing it is very likely that these substrings are part of a
2405 * path or something else. (Checking q >= lend ensures that we
2406 * only count matches in the current line.) */
2407 if ((!(q = strstr(p, " overlay")) || q >= lend) &&
2408 (!(q = strstr(p, " aufs")) || q >= lend))
2409 goto next;
2410
329b3625 2411 if (!(q = strstr(p, olddir)) || (q >= lend))
504a2217 2412 goto next;
329b3625
CB		 2413
2414 /* replace the olddir with newdir */
2415 if (olddirlen >= newdirlen) {
2416 size_t diff = olddirlen - newdirlen;
2417 memcpy(q, newdir, newdirlen);
2418 if (olddirlen != newdirlen) {
2419 memmove(q + newdirlen, q + newdirlen + diff,
2420 strlen(q) - newdirlen - diff + 1);
2421 lend -= diff;
2422 conf->unexpanded_len -= diff;
2423 }
2424 } else {
2425 char *new;
2426 size_t diff = newdirlen - olddirlen;
2427 size_t oldlen = conf->unexpanded_len;
2428 size_t newlen = oldlen + diff;
2429 size_t poffset = q - conf->unexpanded_config;
504a2217 2430
329b3625 2431 new = realloc(conf->unexpanded_config, newlen + 1);
25a908b8 2432 if (!new)
329b3625 2433 return false;
25a908b8 2434
329b3625
CB		 2435 conf->unexpanded_len = newlen;
2436 conf->unexpanded_alloced = newlen + 1;
2437 new[newlen - 1] = '\0';
2438 lend = new + (lend - conf->unexpanded_config);
25a908b8 2439 /* Move over the remainder to make room for the newdir.
504a2217 2440 */
329b3625
CB		 2441 memmove(new + poffset + newdirlen,
2442 new + poffset + olddirlen,
2443 oldlen - poffset - olddirlen + 1);
2444 conf->unexpanded_config = new;
2445 memcpy(new + poffset, newdir, newdirlen);
2446 lend += diff;
2447 }
504a2217
CB		 2448 next:
2449 lstart = lend;
329b3625 2450 }
504a2217 2451
329b3625
CB		 2452 return true;
2453}
2454
67702c21 2455bool clone_update_unexp_hooks(struct lxc_conf *conf, const char *oldpath,
d546aa0e
CB		 2456 const char *newpath, const char *oldname,
2457 const char *newname)
6b0d5538 2458{
67702c21 2459 int ret;
504a2217
CB		 2460 char *lend, *newdir, *olddir, *p;
2461 char *lstart = conf->unexpanded_config;
2462 size_t newdirlen, olddirlen;
2463 const char *key = "lxc.hook";
67702c21 2464
504a2217
CB		 2465 olddirlen = strlen(oldpath) + strlen(oldname) + 1;
2466 olddir = alloca(olddirlen + 1);
d546aa0e 2467 ret = snprintf(olddir, olddirlen + 1, "%s/%s", oldpath, oldname);
25a908b8 2468 if (ret < 0 || ret >= olddirlen + 1)
67702c21 2469 return false;
504a2217
CB		 2470
2471 newdirlen = strlen(newpath) + strlen(newname) + 1;
2472 newdir = alloca(newdirlen + 1);
d546aa0e 2473 ret = snprintf(newdir, newdirlen + 1, "%s/%s", newpath, newname);
25a908b8 2474 if (ret < 0 || ret >= newdirlen + 1)
67702c21 2475 return false;
25a908b8 2476
67702c21
SH		 2477 if (!conf->unexpanded_config)
2478 return true;
25a908b8 2479
67702c21
SH		 2480 while (*lstart) {
2481 lend = strchr(lstart, '\n');
2482 if (!lend)
2483 lend = lstart + strlen(lstart);
2484 else
2485 lend++;
504a2217 2486
d546aa0e 2487 if (strncmp(lstart, key, strlen(key)) != 0)
504a2217
CB		 2488 goto next;
2489
d546aa0e
CB		 2490 p = strchr(lstart + strlen(key), '=');
2491 if (!p)
504a2217 2492 goto next;
67702c21 2493 p++;
504a2217 2494
67702c21
SH		 2495 while (isblank(*p))
2496 p++;
504a2217
CB		 2497
2498 if (p >= lend)
2499 goto next;
2500
d546aa0e 2501 if (strncmp(p, olddir, strlen(olddir)) != 0)
504a2217
CB		 2502 goto next;
2503
67702c21
SH		 2504 /* replace the olddir with newdir */
2505 if (olddirlen >= newdirlen) {
2506 size_t diff = olddirlen - newdirlen;
2507 memcpy(p, newdir, newdirlen);
2508 if (olddirlen != newdirlen) {
d546aa0e
CB		 2509 memmove(p + newdirlen, p + newdirlen + diff,
2510 strlen(p) - newdirlen - diff + 1);
67702c21
SH		 2511 lend -= diff;
2512 conf->unexpanded_len -= diff;
2513 }
67702c21
SH		 2514 } else {
2515 char *new;
2516 size_t diff = newdirlen - olddirlen;
2517 size_t oldlen = conf->unexpanded_len;
2518 size_t newlen = oldlen + diff;
2519 size_t poffset = p - conf->unexpanded_config;
504a2217 2520
d546aa0e 2521 new = realloc(conf->unexpanded_config, newlen + 1);
25a908b8 2522 if (!new)
6b0d5538 2523 return false;
25a908b8 2524
67702c21 2525 conf->unexpanded_len = newlen;
d546aa0e
CB		 2526 conf->unexpanded_alloced = newlen + 1;
2527 new[newlen - 1] = '\0';
67702c21 2528 lend = new + (lend - conf->unexpanded_config);
25a908b8 2529 /* Move over the remainder to make room for the newdir.
504a2217 2530 */
d546aa0e
CB		 2531 memmove(new + poffset + newdirlen,
2532 new + poffset + olddirlen,
2533 oldlen - poffset - olddirlen + 1);
67702c21 2534 conf->unexpanded_config = new;
d546aa0e
CB		 2535 memcpy(new + poffset, newdir, newdirlen);
2536 lend += diff;
fd986e08 2537 }
504a2217
CB		 2538 next:
2539 lstart = lend;
fd986e08 2540 }
504a2217 2541
6b0d5538
SH		 2542 return true;
2543}
2544
504a2217
CB		 2545#define DO(cmd) \
2546 { \
2547 if (!(cmd)) { \
2548 ERROR("Error writing to new config"); \
2549 return false; \
2550 } \
2551 }
6b0d5538 2552
25a908b8
CB		 2553/* This is called only from clone. We wish to update all hwaddrs in the
2554 * unexpanded config file. We can't/don't want to update any which come from
504a2217
CB		 2555 * lxc.includes (there shouldn't be any).
2556 * We can't just walk the c->lxc-conf->network list because that includes netifs
2557 * from the include files. So we update the ones which we find in the unexp
2558 * config file, then find the original macaddr in the conf->network, and update
2559 * that to the same value.
67702c21
SH		 2560 */
2561bool network_new_hwaddrs(struct lxc_conf *conf)
6b0d5538 2562{
504a2217 2563 char *lend, *p, *p2;
6b0d5538 2564 struct lxc_list *it;
504a2217 2565 char *lstart = conf->unexpanded_config;
6b0d5538 2566
67702c21
SH		 2567 if (!conf->unexpanded_config)
2568 return true;
091045f8 2569
67702c21
SH		 2570 while (*lstart) {
2571 char newhwaddr[18], oldhwaddr[17];
091045f8 2572
67702c21
SH		 2573 lend = strchr(lstart, '\n');
2574 if (!lend)
2575 lend = lstart + strlen(lstart);
2576 else
2577 lend++;
091045f8 2578
4a787c27 2579 if (!lxc_config_net_hwaddr(lstart)) {
67702c21
SH		 2580 lstart = lend;
2581 continue;
72d0e1cb 2582 }
091045f8 2583
4a787c27 2584 p = strchr(lstart, '=');
67702c21
SH		 2585 if (!p) {
2586 lstart = lend;
2587 continue;
72d0e1cb 2588 }
091045f8 2589
67702c21
SH		 2590 p++;
2591 while (isblank(*p))
2592 p++;
2593 if (!*p)
2594 return true;
091045f8 2595
67702c21
SH		 2596 p2 = p;
2597 while (*p2 && !isblank(*p2) && *p2 != '\n')
2598 p2++;
504a2217
CB		 2599
2600 if ((p2 - p) != 17) {
67702c21
SH		 2601 WARN("Bad hwaddr entry");
2602 lstart = lend;
2603 continue;
72d0e1cb 2604 }
091045f8 2605
67702c21 2606 memcpy(oldhwaddr, p, 17);
091045f8
CB		 2607
2608 if (!new_hwaddr(newhwaddr))
2609 return false;
2610
67702c21 2611 memcpy(p, newhwaddr, 17);
25a908b8 2612 lxc_list_for_each(it, &conf->network) {
67702c21 2613 struct lxc_netdev *n = it->elem;
25a908b8 2614
67702c21
SH		 2615 if (n->hwaddr && memcmp(oldhwaddr, n->hwaddr, 17) == 0)
2616 memcpy(n->hwaddr, newhwaddr, 17);
72d0e1cb 2617 }
67702c21
SH		 2618
2619 lstart = lend;
72d0e1cb 2620 }
091045f8 2621
6b0d5538 2622 return true;
72d0e1cb 2623}
8796becf 2624
713046e3 2625static int set_config_ephemeral(const char *key, const char *value,
c7e27aaf 2626 struct lxc_conf *lxc_conf, void *data)
8796becf 2627{
663e9916 2628 if (lxc_config_value_empty(value)) {
3c6cf53a 2629 lxc_conf->ephemeral = 0;
78304622 2630 return 0;
3c6cf53a 2631 }
78304622 2632
66ffdb1a
CB		 2633 if (lxc_safe_uint(value, &lxc_conf->ephemeral) < 0)
2634 return -1;
8796becf 2635
25a908b8 2636 if (lxc_conf->ephemeral > 1)
8796becf 2637 return -1;
8796becf
CB		 2638
2639 return 0;
2640}
2641
46cc906d 2642static int set_config_log_syslog(const char *key, const char *value,
c7e27aaf 2643 struct lxc_conf *lxc_conf, void *data)
64c57ea1 2644{
76d0127f 2645 int facility;
7ca56b84 2646
ee10a69c
CB		 2647 if (lxc_conf->syslog) {
2648 free(lxc_conf->syslog);
2649 lxc_conf->syslog = NULL;
2650 }
2651
663e9916 2652 if (lxc_config_value_empty(value))
7ca56b84
CB		 2653 return 0;
2654
76d0127f 2655 facility = lxc_syslog_priority_to_int(value);
25a908b8 2656 if (facility == -EINVAL)
76d0127f 2657 return -1;
64c57ea1 2658
76d0127f 2659 lxc_log_syslog(facility);
713046e3 2660 return set_config_string_item(&lxc_conf->syslog, value);
64c57ea1 2661}
5a46f283 2662
713046e3 2663static int set_config_no_new_privs(const char *key, const char *value,
c7e27aaf 2664 struct lxc_conf *lxc_conf, void *data)
5a46f283 2665{
e8ec7c9e 2666 unsigned int v;
5a46f283 2667
663e9916 2668 if (lxc_config_value_empty(value)) {
cf3f8bf6 2669 lxc_conf->no_new_privs = false;
80926845 2670 return 0;
cf3f8bf6 2671 }
80926845 2672
e8ec7c9e
CB		 2673 if (lxc_safe_uint(value, &v) < 0)
2674 return -1;
2675
25a908b8 2676 if (v > 1)
5a46f283 2677 return -1;
e8ec7c9e 2678
5a46f283
CB		 2679 lxc_conf->no_new_privs = v ? true : false;
2680
2681 return 0;
2682}
7b992a3e 2683
63bab717
CB		 2684static int set_config_noop(const char *key, const char *value,
2685 struct lxc_conf *lxc_conf, void *data)
2686{
2687 return 0;
2688}
2689
7b992a3e 2690/* Callbacks to get configuration items. */
6bede808 2691static int get_config_personality(const char *key, char *retv, int inlen,
cccd2219 2692 struct lxc_conf *c, void *data)
7b992a3e
CB		 2693{
2694 int fulllen = 0;
2695
2696 if (!retv)
2697 inlen = 0;
2698 else
2699 memset(retv, 0, inlen);
2700
2701#if HAVE_SYS_PERSONALITY_H
2702 int len = 0;
2703
6bede808 2704 switch (c->personality) {
7b992a3e
CB		 2705 case PER_LINUX32:
2706 strprint(retv, inlen, "i686");
2707 break;
2708 case PER_LINUX:
2709 strprint(retv, inlen, "x86_64");
2710 break;
2711 default:
2712 break;
2713 }
2714#endif
2715
2716 return fulllen;
2717}
bdf91ab4 2718
232763d6
CB		 2719static int get_config_pty_max(const char *key, char *retv, int inlen,
2720 struct lxc_conf *c, void *data)
bdf91ab4 2721{
6bede808 2722 return lxc_get_conf_int(c, retv, inlen, c->pts);
bdf91ab4 2723}
5485782f 2724
fe1c5887
CB		 2725static int get_config_tty_max(const char *key, char *retv, int inlen,
2726 struct lxc_conf *c, void *data)
5485782f 2727{
6bede808 2728 return lxc_get_conf_int(c, retv, inlen, c->tty);
5485782f 2729}
8015e018 2730
42e53c29 2731static int get_config_tty_dir(const char *key, char *retv, int inlen,
cccd2219 2732 struct lxc_conf *c, void *data)
8015e018 2733{
6bede808 2734 return lxc_get_conf_str(retv, inlen, c->ttydir);
8015e018 2735}
de1ede69 2736
953fe44f
CB		 2737static int get_config_apparmor_profile(const char *key, char *retv, int inlen,
2738 struct lxc_conf *c, void *data)
104c8e6c 2739{
6bede808 2740 return lxc_get_conf_str(retv, inlen, c->lsm_aa_profile);
104c8e6c 2741}
d60d18c6 2742
953fe44f
CB		 2743static int get_config_apparmor_allow_incomplete(const char *key, char *retv,
2744 int inlen, struct lxc_conf *c,
2745 void *data)
d60d18c6 2746{
6bede808
CB		 2747 return lxc_get_conf_int(c, retv, inlen,
2748 c->lsm_aa_allow_incomplete);
d60d18c6 2749}
4203a0b5 2750
953fe44f
CB		 2751static int get_config_selinux_context(const char *key, char *retv, int inlen,
2752 struct lxc_conf *c, void *data)
4203a0b5 2753{
6bede808 2754 return lxc_get_conf_str(retv, inlen, c->lsm_se_context);
4203a0b5 2755}
b863bf92 2756
25a908b8
CB		 2757/* If you ask for a specific cgroup value, i.e. lxc.cgroup.devices.list, then
2758 * just the value(s) will be printed. Since there still could be more than one,
2759 * it is newline-separated.
2760 * (Maybe that's ambigous, since some values, i.e. devices.list, will already
2761 * have newlines?)
2762 * If you ask for 'lxc.cgroup", then all cgroup entries will be printed, in
2763 * 'lxc.cgroup.subsystem.key = value' format.
b863bf92 2764 */
43654d34
CB		 2765static int get_config_cgroup_controller(const char *key, char *retv, int inlen,
2766 struct lxc_conf *c, void *data)
b863bf92
CB		 2767{
2768 struct lxc_list *it;
2769 int len;
2770 int fulllen = 0;
2771 bool get_all = false;
2772
2773 if (!retv)
2774 inlen = 0;
2775 else
2776 memset(retv, 0, inlen);
2777
2778 if (!strcmp(key, "lxc.cgroup"))
2779 get_all = true;
2780 else if (!strncmp(key, "lxc.cgroup.", 11))
2781 key += 11;
2782 else
2783 return -1;
2784
6bede808 2785 lxc_list_for_each(it, &c->cgroup) {
b863bf92 2786 struct lxc_cgroup *cg = it->elem;
25a908b8 2787
b863bf92 2788 if (get_all) {
25a908b8
CB		 2789 strprint(retv, inlen, "lxc.cgroup.%s = %s\n",
2790 cg->subsystem, cg->value);
b863bf92
CB		 2791 } else if (!strcmp(cg->subsystem, key)) {
2792 strprint(retv, inlen, "%s\n", cg->value);
2793 }
2794 }
2795
2796 return fulllen;
2797}
5014ff2e 2798
43654d34
CB		 2799static int get_config_cgroup_dir(const char *key, char *retv, int inlen,
2800 struct lxc_conf *lxc_conf, void *data)
2801{
2802 int len;
2803 int fulllen = 0;
2804
2805 if (!retv)
2806 inlen = 0;
2807 else
2808 memset(retv, 0, inlen);
2809
2810 strprint(retv, inlen, "%s", lxc_conf->cgroup_meta.dir);
2811
2812 return fulllen;
2813}
2814
6bede808 2815static int get_config_idmaps(const char *key, char *retv, int inlen,
cccd2219 2816 struct lxc_conf *c, void *data)
5014ff2e
CB		 2817{
2818 struct lxc_list *it;
2819 int len, listlen, ret;
2820 int fulllen = 0;
2821/* "u 1000 1000000 65536"
2822 *
2823 * let's render this as
2824 *
2825 * sizeof(char)
2826 * +
2827 * sizeof(" ")
2828 * +
2829 * sizeof(uint64_t)
2830 * +
2831 * sizeof(" ")
2832 * +
2833 * sizeof(uint64_t)
2834 * +
2835 * sizeof(" ")
2836 * +
2837 * sizeof(uint64_t)
2838 * +
2839 * \0
2840 */
2841#define __LXC_IDMAP_STR_BUF (3 * LXC_NUMSTRLEN64 + 3 + 1 + 1)
2842 char buf[__LXC_IDMAP_STR_BUF];
2843
2844 if (!retv)
2845 inlen = 0;
2846 else
2847 memset(retv, 0, inlen);
2848
6bede808
CB		 2849 listlen = lxc_list_len(&c->id_map);
2850 lxc_list_for_each(it, &c->id_map)
5014ff2e
CB		 2851 {
2852 struct id_map *map = it->elem;
2853 ret = snprintf(buf, __LXC_IDMAP_STR_BUF, "%c %lu %lu %lu",
2854 (map->idtype == ID_TYPE_UID) ? 'u' : 'g',
2855 map->nsid, map->hostid, map->range);
2856 if (ret < 0 || ret >= __LXC_IDMAP_STR_BUF)
2857 return -1;
2858
2859 strprint(retv, inlen, "%s%s", buf, (listlen-- > 1) ? "\n" : "");
2860 }
2861 return fulllen;
2862}
b29b29be 2863
46cc906d 2864static int get_config_log_level(const char *key, char *retv, int inlen,
cccd2219 2865 struct lxc_conf *c, void *data)
b29b29be
CB		 2866{
2867 const char *v;
6bede808 2868 v = lxc_log_priority_to_string(c->loglevel);
b29b29be
CB		 2869 return lxc_get_conf_str(retv, inlen, v);
2870}
3d4630ab 2871
46cc906d 2872static int get_config_log_file(const char *key, char *retv, int inlen,
cccd2219 2873 struct lxc_conf *c, void *data)
3d4630ab 2874{
6bede808 2875 return lxc_get_conf_str(retv, inlen, c->logfile);
3d4630ab 2876}
0d601acb 2877
47148e96
CB		 2878static int get_config_mount_fstab(const char *key, char *retv, int inlen,
2879 struct lxc_conf *c, void *data)
0d601acb 2880{
6bede808 2881 return lxc_get_conf_str(retv, inlen, c->fstab);
0d601acb 2882}
43fbf8d9 2883
6bede808 2884static int get_config_mount_auto(const char *key, char *retv, int inlen,
cccd2219 2885 struct lxc_conf *c, void *data)
43fbf8d9
CB		 2886{
2887 int len, fulllen = 0;
2888 const char *sep = "";
2889
2890 if (!retv)
2891 inlen = 0;
2892 else
2893 memset(retv, 0, inlen);
2894
6bede808 2895 if (!(c->auto_mounts & LXC_AUTO_ALL_MASK))
43fbf8d9
CB		 2896 return 0;
2897
6bede808 2898 switch (c->auto_mounts & LXC_AUTO_PROC_MASK) {
43fbf8d9
CB		 2899 case LXC_AUTO_PROC_MIXED:
2900 strprint(retv, inlen, "%sproc:mixed", sep);
2901 sep = " ";
2902 break;
2903 case LXC_AUTO_PROC_RW:
2904 strprint(retv, inlen, "%sproc:rw", sep);
2905 sep = " ";
2906 break;
2907 default:
2908 break;
2909 }
2910
6bede808 2911 switch (c->auto_mounts & LXC_AUTO_SYS_MASK) {
43fbf8d9
CB		 2912 case LXC_AUTO_SYS_RO:
2913 strprint(retv, inlen, "%ssys:ro", sep);
2914 sep = " ";
2915 break;
2916 case LXC_AUTO_SYS_RW:
2917 strprint(retv, inlen, "%ssys:rw", sep);
2918 sep = " ";
2919 break;
2920 case LXC_AUTO_SYS_MIXED:
2921 strprint(retv, inlen, "%ssys:mixed", sep);
2922 sep = " ";
2923 break;
2924 default:
2925 break;
2926 }
2927
6bede808 2928 switch (c->auto_mounts & LXC_AUTO_CGROUP_MASK) {
43fbf8d9
CB		 2929 case LXC_AUTO_CGROUP_NOSPEC:
2930 strprint(retv, inlen, "%scgroup", sep);
2931 sep = " ";
2932 break;
2933 case LXC_AUTO_CGROUP_MIXED:
2934 strprint(retv, inlen, "%scgroup:mixed", sep);
2935 sep = " ";
2936 break;
2937 case LXC_AUTO_CGROUP_RO:
2938 strprint(retv, inlen, "%scgroup:ro", sep);
2939 sep = " ";
2940 break;
2941 case LXC_AUTO_CGROUP_RW:
2942 strprint(retv, inlen, "%scgroup:rw", sep);
2943 sep = " ";
2944 break;
2945 case LXC_AUTO_CGROUP_FULL_NOSPEC:
2946 strprint(retv, inlen, "%scgroup-full", sep);
2947 sep = " ";
2948 break;
2949 case LXC_AUTO_CGROUP_FULL_MIXED:
2950 strprint(retv, inlen, "%scgroup-full:mixed", sep);
2951 sep = " ";
2952 break;
2953 case LXC_AUTO_CGROUP_FULL_RO:
2954 strprint(retv, inlen, "%scgroup-full:ro", sep);
2955 sep = " ";
2956 break;
2957 case LXC_AUTO_CGROUP_FULL_RW:
2958 strprint(retv, inlen, "%scgroup-full:rw", sep);
2959 sep = " ";
2960 break;
2961 default:
2962 break;
2963 }
2964
2965 return fulllen;
2966}
cc921848 2967
6bede808 2968static int get_config_mount(const char *key, char *retv, int inlen,
cccd2219 2969 struct lxc_conf *c, void *data)
cc921848
CB		 2970{
2971 int len, fulllen = 0;
2972 struct lxc_list *it;
2973
2974 if (!retv)
2975 inlen = 0;
2976 else
2977 memset(retv, 0, inlen);
2978
25a908b8 2979 lxc_list_for_each(it, &c->mount_list) {
cc921848
CB		 2980 strprint(retv, inlen, "%s\n", (char *)it->elem);
2981 }
2982
2983 return fulllen;
2984}
819114b6 2985
7a96a068
CB		 2986static int get_config_rootfs_path(const char *key, char *retv, int inlen,
2987 struct lxc_conf *c, void *data)
819114b6 2988{
6bede808 2989 return lxc_get_conf_str(retv, inlen, c->rootfs.path);
819114b6 2990}
3af60359 2991
6bede808 2992static int get_config_rootfs_mount(const char *key, char *retv, int inlen,
cccd2219 2993 struct lxc_conf *c, void *data)
3af60359 2994{
6bede808 2995 return lxc_get_conf_str(retv, inlen, c->rootfs.mount);
3af60359 2996}
0e9db631 2997
6bede808 2998static int get_config_rootfs_options(const char *key, char *retv, int inlen,
cccd2219 2999 struct lxc_conf *c, void *data)
0e9db631 3000{
6bede808 3001 return lxc_get_conf_str(retv, inlen, c->rootfs.options);
0e9db631 3002}
8f183f38 3003
6bede808 3004static int get_config_rootfs_backend(const char *key, char *retv, int inlen,
cccd2219 3005 struct lxc_conf *c, void *data)
8f183f38 3006{
f7ac4459 3007 return 0;
8f183f38 3008}
b87574e7 3009
b67771bc 3010static int get_config_uts_name(const char *key, char *retv, int inlen,
cccd2219 3011 struct lxc_conf *c, void *data)
e274f8b0
CB		 3012{
3013 return lxc_get_conf_str(
3014 retv, inlen,
6bede808 3015 c->utsname ? c->utsname->nodename : NULL);
e274f8b0 3016}
466c2e93 3017
6bede808 3018static int get_config_hooks(const char *key, char *retv, int inlen,
cccd2219 3019 struct lxc_conf *c, void *data)
466c2e93
CB		 3020{
3021 char *subkey;
3022 int len, fulllen = 0, found = -1;
3023 struct lxc_list *it;
3024 int i;
3025
466c2e93
CB		 3026 subkey = strchr(key, '.');
3027 if (subkey)
3028 subkey = strchr(subkey + 1, '.');
3029 if (!subkey)
3030 return -1;
3031 subkey++;
3032 if (!*subkey)
3033 return -1;
3034 for (i = 0; i < NUM_LXC_HOOKS; i++) {
3035 if (strcmp(lxchook_names[i], subkey) == 0) {
3036 found = i;
3037 break;
3038 }
3039 }
3040 if (found == -1)
3041 return -1;
3042
3043 if (!retv)
3044 inlen = 0;
3045 else
3046 memset(retv, 0, inlen);
3047
6bede808 3048 lxc_list_for_each(it, &c->hooks[found]) {
466c2e93
CB		 3049 strprint(retv, inlen, "%s\n", (char *)it->elem);
3050 }
3051 return fulllen;
3052}
d2ceff53 3053
f9373e40
CB		 3054static int get_config_net(const char *key, char *retv, int inlen,
3055 struct lxc_conf *c, void *data)
d2ceff53
CB		 3056{
3057 int len, fulllen = 0;
3058 struct lxc_list *it;
3059
3060 if (!retv)
3061 inlen = 0;
3062 else
3063 memset(retv, 0, inlen);
3064
6bede808 3065 lxc_list_for_each(it, &c->network) {
d2ceff53
CB		 3066 struct lxc_netdev *n = it->elem;
3067 const char *t = lxc_net_type_to_str(n->type);
3068 strprint(retv, inlen, "%s\n", t ? t : "(invalid)");
3069 }
3070
3071 return fulllen;
3072}
bdccff60 3073
6bede808 3074static int get_config_cap_drop(const char *key, char *retv, int inlen,
cccd2219 3075 struct lxc_conf *c, void *data)
1c96d6d8
CB		 3076{
3077 int len, fulllen = 0;
3078 struct lxc_list *it;
3079
3080 if (!retv)
3081 inlen = 0;
3082 else
3083 memset(retv, 0, inlen);
3084
6bede808 3085 lxc_list_for_each(it, &c->caps) {
b80927f2
CB		 3086 strprint(retv, inlen, "%s\n", (char *)it->elem);
3087 }
25a908b8 3088
b80927f2
CB		 3089 return fulllen;
3090}
3091
6bede808 3092static int get_config_cap_keep(const char *key, char *retv, int inlen,
cccd2219 3093 struct lxc_conf *c, void *data)
b80927f2
CB		 3094{
3095 int len, fulllen = 0;
3096 struct lxc_list *it;
3097
3098 if (!retv)
3099 inlen = 0;
3100 else
3101 memset(retv, 0, inlen);
3102
6bede808 3103 lxc_list_for_each(it, &c->keepcaps) {
1c96d6d8
CB		 3104 strprint(retv, inlen, "%s\n", (char *)it->elem);
3105 }
25a908b8 3106
1c96d6d8
CB		 3107 return fulllen;
3108}
0692663a 3109
3aed4934
CB		 3110static int get_config_console_path(const char *key, char *retv, int inlen,
3111 struct lxc_conf *c, void *data)
0692663a 3112{
6bede808 3113 return lxc_get_conf_str(retv, inlen, c->console.path);
0692663a 3114}
794d1c06 3115
6bede808 3116static int get_config_console_logfile(const char *key, char *retv, int inlen,
cccd2219 3117 struct lxc_conf *c, void *data)
794d1c06 3118{
6bede808 3119 return lxc_get_conf_str(retv, inlen, c->console.log_path);
794d1c06 3120}
75f55b1f 3121
d91adfa6
CB		 3122static int get_config_console_rotate(const char *key, char *retv, int inlen,
3123 struct lxc_conf *c, void *data)
3124{
3125 return lxc_get_conf_int(c, retv, inlen, c->console.log_rotate);
3126}
3127
3128
28f3b1cd
CB		 3129static int get_config_console_buffer_size(const char *key, char *retv,
3130 int inlen, struct lxc_conf *c,
3131 void *data)
a04220de
CB		 3132{
3133 return lxc_get_conf_uint64(c, retv, inlen, c->autodev);
3134}
3135
3a784510
CB		 3136static int get_config_console_buffer_logfile(const char *key, char *retv,
3137 int inlen, struct lxc_conf *c,
3138 void *data)
3139{
3140 return lxc_get_conf_str(retv, inlen, c->console.buffer_log_file);
3141}
3142
0b427da0
CB		 3143static int get_config_seccomp_profile(const char *key, char *retv, int inlen,
3144 struct lxc_conf *c, void *data)
75f55b1f 3145{
6bede808 3146 return lxc_get_conf_str(retv, inlen, c->seccomp);
75f55b1f 3147}
97f6dad0 3148
6bede808 3149static int get_config_autodev(const char *key, char *retv, int inlen,
cccd2219 3150 struct lxc_conf *c, void *data)
97f6dad0 3151{
6bede808 3152 return lxc_get_conf_int(c, retv, inlen, c->autodev);
97f6dad0 3153}
afee4324 3154
55c84efc 3155static int get_config_signal_halt(const char *key, char *retv, int inlen,
25a908b8 3156 struct lxc_conf *c, void *data)
afee4324 3157{
6bede808 3158 return lxc_get_conf_int(c, retv, inlen, c->haltsignal);
afee4324 3159}
3aa8f359 3160
55c84efc 3161static int get_config_signal_reboot(const char *key, char *retv, int inlen,
25a908b8 3162 struct lxc_conf *c, void *data)
3aa8f359 3163{
6bede808 3164 return lxc_get_conf_int(c, retv, inlen, c->rebootsignal);
3aa8f359 3165}
2e16269f 3166
55c84efc 3167static int get_config_signal_stop(const char *key, char *retv, int inlen,
25a908b8 3168 struct lxc_conf *c, void *data)
2e16269f 3169{
6bede808 3170 return lxc_get_conf_int(c, retv, inlen, c->stopsignal);
2e16269f 3171}
54345299 3172
6bede808 3173static int get_config_start(const char *key, char *retv, int inlen,
cccd2219 3174 struct lxc_conf *c, void *data)
54345299 3175{
c6182222 3176 if (strcmp(key + 10, "auto") == 0)
6bede808 3177 return lxc_get_conf_int(c, retv, inlen, c->start_auto);
c6182222 3178 else if (strcmp(key + 10, "delay") == 0)
6bede808 3179 return lxc_get_conf_int(c, retv, inlen, c->start_delay);
c6182222 3180 else if (strcmp(key + 10, "order") == 0)
6bede808 3181 return lxc_get_conf_int(c, retv, inlen, c->start_order);
54345299
CB		 3182
3183 return -1;
3184}
de9df15e 3185
46cc906d 3186static int get_config_log_syslog(const char *key, char *retv, int inlen,
25a908b8 3187 struct lxc_conf *c, void *data)
de9df15e 3188{
6bede808 3189 return lxc_get_conf_str(retv, inlen, c->syslog);
de9df15e 3190}
ac0f949c 3191
6bede808 3192static int get_config_monitor(const char *key, char *retv, int inlen,
cccd2219 3193 struct lxc_conf *c, void *data)
ac0f949c 3194{
6bede808 3195 return lxc_get_conf_int(c, retv, inlen, c->monitor_unshare);
ac0f949c 3196}
90ec7b6e 3197
6bede808 3198static int get_config_group(const char *key, char *retv, int inlen,
cccd2219 3199 struct lxc_conf *c, void *data)
90ec7b6e
CB		 3200{
3201 int len, fulllen = 0;
3202 struct lxc_list *it;
3203
3204 if (!retv)
3205 inlen = 0;
3206 else
3207 memset(retv, 0, inlen);
3208
6bede808 3209 lxc_list_for_each(it, &c->groups) {
90ec7b6e
CB		 3210 strprint(retv, inlen, "%s\n", (char *)it->elem);
3211 }
25a908b8 3212
90ec7b6e
CB		 3213 return fulllen;
3214}
aa0db7d3 3215
6bede808 3216static int get_config_environment(const char *key, char *retv, int inlen,
cccd2219 3217 struct lxc_conf *c, void *data)
aa0db7d3
CB		 3218{
3219 int len, fulllen = 0;
3220 struct lxc_list *it;
3221
3222 if (!retv)
3223 inlen = 0;
3224 else
3225 memset(retv, 0, inlen);
3226
6bede808 3227 lxc_list_for_each(it, &c->environment) {
aa0db7d3
CB		 3228 strprint(retv, inlen, "%s\n", (char *)it->elem);
3229 }
25a908b8 3230
aa0db7d3
CB		 3231 return fulllen;
3232}
96dfcb7d 3233
5cda27c1
SH		 3234static int get_config_execute_cmd(const char *key, char *retv, int inlen,
3235 struct lxc_conf *c, void *data)
3236{
3237 return lxc_get_conf_str(retv, inlen, c->execute_cmd);
3238}
3239
6bede808 3240static int get_config_init_cmd(const char *key, char *retv, int inlen,
cccd2219 3241 struct lxc_conf *c, void *data)
96dfcb7d 3242{
6bede808 3243 return lxc_get_conf_str(retv, inlen, c->init_cmd);
96dfcb7d 3244}
1398e9b1 3245
6bede808 3246static int get_config_init_uid(const char *key, char *retv, int inlen,
cccd2219 3247 struct lxc_conf *c, void *data)
1398e9b1 3248{
6bede808 3249 return lxc_get_conf_int(c, retv, inlen, c->init_uid);
1398e9b1 3250}
dfeb7e42 3251
6bede808 3252static int get_config_init_gid(const char *key, char *retv, int inlen,
cccd2219 3253 struct lxc_conf *c, void *data)
dfeb7e42 3254{
6bede808 3255 return lxc_get_conf_int(c, retv, inlen, c->init_gid);
dfeb7e42 3256}
62048afe 3257
6bede808 3258static int get_config_ephemeral(const char *key, char *retv, int inlen,
cccd2219 3259 struct lxc_conf *c, void *data)
62048afe 3260{
6bede808 3261 return lxc_get_conf_int(c, retv, inlen, c->ephemeral);
62048afe 3262}
b09521ac 3263
6bede808 3264static int get_config_no_new_privs(const char *key, char *retv, int inlen,
cccd2219 3265 struct lxc_conf *c, void *data)
b09521ac 3266{
6bede808 3267 return lxc_get_conf_int(c, retv, inlen, c->no_new_privs);
b09521ac 3268}
389f6466 3269
25a908b8 3270/* If you ask for a specific value, i.e. lxc.prlimit.nofile, then just the value
240d4b74 3271 * will be printed. If you ask for 'lxc.prlimit', then all limit entries will be
3272 * printed, in 'lxc.prlimit.resource = value' format.
389f6466 3273 */
240d4b74 3274static int get_config_prlimit(const char *key, char *retv, int inlen,
cccd2219 3275 struct lxc_conf *c, void *data)
389f6466
CB		 3276{
3277 int fulllen = 0, len;
3278 bool get_all = false;
3279 struct lxc_list *it;
3280
3281 if (!retv)
3282 inlen = 0;
3283 else
3284 memset(retv, 0, inlen);
3285
240d4b74 3286 if (!strcmp(key, "lxc.prlimit"))
389f6466 3287 get_all = true;
240d4b74 3288 else if (strncmp(key, "lxc.prlimit.", 12) == 0)
3289 key += 12;
389f6466
CB		 3290 else
3291 return -1;
3292
6bede808 3293 lxc_list_for_each(it, &c->limits) {
389f6466
CB		 3294 char buf[LXC_NUMSTRLEN64 * 2 + 2]; /* 2 colon separated 64 bit
3295 integers or the word
3296 'unlimited' */
3297 int partlen;
3298 struct lxc_limit *lim = it->elem;
3299
3300 if (lim->limit.rlim_cur == RLIM_INFINITY) {
3301 memcpy(buf, "unlimited", sizeof("unlimited"));
3302 partlen = sizeof("unlimited") - 1;
3303 } else {
3304 partlen = sprintf(buf, "%" PRIu64,
3305 (uint64_t)lim->limit.rlim_cur);
3306 }
3307 if (lim->limit.rlim_cur != lim->limit.rlim_max) {
25a908b8 3308 if (lim->limit.rlim_max == RLIM_INFINITY)
389f6466
CB		 3309 memcpy(buf + partlen, ":unlimited",
3310 sizeof(":unlimited"));
25a908b8 3311 else
389f6466
CB		 3312 sprintf(buf + partlen, ":%" PRIu64,
3313 (uint64_t)lim->limit.rlim_max);
389f6466
CB		 3314 }
3315
3316 if (get_all) {
240d4b74 3317 strprint(retv, inlen, "lxc.prlimit.%s = %s\n",
389f6466 3318 lim->resource, buf);
25a908b8 3319 } else if (!strcmp(lim->resource, key)) {
389f6466
CB		 3320 strprint(retv, inlen, "%s", buf);
3321 }
3322 }
3323
3324 return fulllen;
3325}
e08cb901 3326
63bab717
CB		 3327static int get_config_noop(const char *key, char *retv, int inlen,
3328 struct lxc_conf *c, void *data)
3329{
3330 return 0;
3331}
3332
28d9e29e
CB		 3333static int get_config_namespace(const char *key, char *retv, int inlen,
3334 struct lxc_conf *c, void *data)
3335{
3336 int len, ns_idx;
3337 const char *namespace;
3338 int fulllen = 0;
3339
3340 if (!retv)
3341 inlen = 0;
3342 else
3343 memset(retv, 0, inlen);
3344
3345 namespace = key + sizeof("lxc.namespace.") - 1;
3346 ns_idx = lxc_namespace_2_ns_idx(namespace);
3347 if (ns_idx < 0)
3348 return ns_idx;
3349
3350 strprint(retv, inlen, "%s", c->inherit_ns[ns_idx]);
3351
3352 return fulllen;
3353}
3354
e08cb901 3355/* Callbacks to clear config items. */
26471403
CB		 3356static inline int clr_config_personality(const char *key, struct lxc_conf *c,
3357 void *data)
e08cb901
CB		 3358{
3359 c->personality = -1;
3360 return 0;
3361}
03818ae3 3362
232763d6
CB		 3363static inline int clr_config_pty_max(const char *key, struct lxc_conf *c,
3364 void *data)
03818ae3
CB		 3365{
3366 c->pts = 0;
3367 return 0;
3368}
e7a4b096 3369
fe1c5887
CB		 3370static inline int clr_config_tty_max(const char *key, struct lxc_conf *c,
3371 void *data)
e7a4b096
CB		 3372{
3373 c->tty = 0;
3374 return 0;
3375}
eaf8c0c7 3376
42e53c29 3377static inline int clr_config_tty_dir(const char *key, struct lxc_conf *c,
26471403 3378 void *data)
eaf8c0c7
CB		 3379{
3380 free(c->ttydir);
3381 c->ttydir = NULL;
3382 return 0;
3383}
6bd86308 3384
953fe44f
CB		 3385static inline int clr_config_apparmor_profile(const char *key,
3386 struct lxc_conf *c, void *data)
025718fb
CB		 3387{
3388 free(c->lsm_aa_profile);
3389 c->lsm_aa_profile = NULL;
3390 return 0;
3391}
3061e04e 3392
953fe44f
CB		 3393static inline int clr_config_apparmor_allow_incomplete(const char *key,
3394 struct lxc_conf *c,
3395 void *data)
3061e04e
CB		 3396{
3397 c->lsm_aa_allow_incomplete = 0;
3398 return 0;
3399}
31fc3494 3400
953fe44f
CB		 3401static inline int clr_config_selinux_context(const char *key,
3402 struct lxc_conf *c, void *data)
31fc3494
CB		 3403{
3404 free(c->lsm_se_context);
3405 c->lsm_se_context = NULL;
3406 return 0;
3407}
754d01ce 3408
43654d34
CB		 3409static inline int clr_config_cgroup_controller(const char *key,
3410 struct lxc_conf *c, void *data)
754d01ce
CB		 3411{
3412 return lxc_clear_cgroups(c, key);
3413}
d3a178de 3414
43654d34
CB		 3415static int clr_config_cgroup_dir(const char *key, struct lxc_conf *lxc_conf,
3416 void *data)
3417{
3418 if (lxc_conf->cgroup_meta.dir) {
3419 free(lxc_conf->cgroup_meta.dir);
3420 lxc_conf->cgroup_meta.dir = NULL;
3421 }
3422
3423 return 0;
3424}
3425
26471403
CB		 3426static inline int clr_config_idmaps(const char *key, struct lxc_conf *c,
3427 void *data)
d3a178de
CB		 3428{
3429 return lxc_clear_idmaps(c);
3430}
97d3338d 3431
46cc906d 3432static inline int clr_config_log_level(const char *key, struct lxc_conf *c,
26471403 3433 void *data)
97d3338d 3434{
4b73005c 3435 c->loglevel = LXC_LOG_LEVEL_NOTSET;
97d3338d
CB		 3436 return 0;
3437}
de46099c 3438
46cc906d 3439static inline int clr_config_log_file(const char *key, struct lxc_conf *c,
26471403 3440 void *data)
de46099c
CB		 3441{
3442 free(c->logfile);
3443 c->logfile = NULL;
3444 return 0;
3445}
b4fa13cd 3446
26471403
CB		 3447static inline int clr_config_mount(const char *key, struct lxc_conf *c,
3448 void *data)
b4fa13cd
CB		 3449{
3450 return lxc_clear_mount_entries(c);
3451}
4be81021 3452
26471403
CB		 3453static inline int clr_config_mount_auto(const char *key, struct lxc_conf *c,
3454 void *data)
4be81021
CB		 3455{
3456 return lxc_clear_automounts(c);
3457}
350d4b15 3458
47148e96
CB		 3459static inline int clr_config_mount_fstab(const char *key, struct lxc_conf *c,
3460 void *data)
350d4b15
CB		 3461{
3462 free(c->fstab);
3463 c->fstab = NULL;
3464 return 0;
3465}
faca124d 3466
7a96a068
CB		 3467static inline int clr_config_rootfs_path(const char *key, struct lxc_conf *c,
3468 void *data)
faca124d
CB		 3469{
3470 free(c->rootfs.path);
3471 c->rootfs.path = NULL;
3472 return 0;
3473}
3474
26471403
CB		 3475static inline int clr_config_rootfs_mount(const char *key, struct lxc_conf *c,
3476 void *data)
fddefc2d
CB		 3477{
3478 free(c->rootfs.mount);
3479 c->rootfs.mount = NULL;
3480 return 0;
3481}
7b1eb67d 3482
26471403
CB		 3483static inline int clr_config_rootfs_options(const char *key, struct lxc_conf *c,
3484 void *data)
7b1eb67d
CB		 3485{
3486 free(c->rootfs.options);
3487 c->rootfs.options = NULL;
3488 return 0;
3489}
02becb8d 3490
26471403
CB		 3491static inline int clr_config_rootfs_backend(const char *key, struct lxc_conf *c,
3492 void *data)
02becb8d 3493{
02becb8d
CB		 3494 return 0;
3495}
3496
b67771bc 3497static inline int clr_config_uts_name(const char *key, struct lxc_conf *c,
26471403 3498 void *data)
d31d0103
CB		 3499{
3500 free(c->utsname);
3501 c->utsname = NULL;
3502 return 0;
3503}
c9eeb90c 3504
26471403
CB		 3505static inline int clr_config_hooks(const char *key, struct lxc_conf *c,
3506 void *data)
c9eeb90c
CB		 3507{
3508 return lxc_clear_hooks(c, key);
3509}
3510
f9373e40
CB		 3511static inline int clr_config_net(const char *key, struct lxc_conf *c,
3512 void *data)
f4488271 3513{
c302b476
CB		 3514 lxc_free_networks(&c->network);
3515
e5d2fd7c 3516 return 0;
f4488271
CB		 3517}
3518
26471403
CB		 3519static inline int clr_config_cap_drop(const char *key, struct lxc_conf *c,
3520 void *data)
244cb55b
CB		 3521{
3522 return lxc_clear_config_caps(c);
3523}
c74cc490 3524
26471403
CB		 3525static inline int clr_config_cap_keep(const char *key, struct lxc_conf *c,
3526 void *data)
c74cc490
CB		 3527{
3528 return lxc_clear_config_keepcaps(c);
3529}
4e5b633f 3530
3aed4934
CB		 3531static inline int clr_config_console_path(const char *key, struct lxc_conf *c,
3532 void *data)
4e5b633f
CB		 3533{
3534 free(c->console.path);
3535 c->console.path = NULL;
3536 return 0;
3537}
3538
7c2ec23a 3539static inline int clr_config_console_logfile(const char *key,
26471403 3540 struct lxc_conf *c, void *data)
7c2ec23a
CB		 3541{
3542 free(c->console.log_path);
3543 c->console.log_path = NULL;
3544 return 0;
3545}
bbca37d8 3546
d91adfa6
CB		 3547static inline int clr_config_console_rotate(const char *key, struct lxc_conf *c,
3548 void *data)
3549{
3550 c->console.log_rotate = 0;
3551 return 0;
3552}
3553
28f3b1cd
CB		 3554static inline int clr_config_console_buffer_size(const char *key,
3555 struct lxc_conf *c, void *data)
a04220de 3556{
28f3b1cd 3557 c->console.buffer_size = 0;
a04220de
CB		 3558 return 0;
3559}
3560
3a784510
CB		 3561static inline int clr_config_console_buffer_logfile(const char *key,
3562 struct lxc_conf *c,
3563 void *data)
3564{
3565 free(c->console.buffer_log_file);
3566 c->console.buffer_log_file = NULL;
3567 return 0;
3568}
3569
0b427da0
CB		 3570static inline int clr_config_seccomp_profile(const char *key,
3571 struct lxc_conf *c, void *data)
bbca37d8
CB		 3572{
3573 free(c->seccomp);
3574 c->seccomp = NULL;
3575 return 0;
3576}
c721e86c 3577
26471403
CB		 3578static inline int clr_config_autodev(const char *key, struct lxc_conf *c,
3579 void *data)
c721e86c
CB		 3580{
3581 c->autodev = 1;
3582 return 0;
3583}
87b288d1 3584
55c84efc 3585static inline int clr_config_signal_halt(const char *key, struct lxc_conf *c,
26471403 3586 void *data)
87b288d1
CB		 3587{
3588 c->haltsignal = 0;
3589 return 0;
3590}
cae63cfa 3591
55c84efc 3592static inline int clr_config_signal_reboot(const char *key, struct lxc_conf *c,
26471403 3593 void *data)
cae63cfa
CB		 3594{
3595 c->rebootsignal = 0;
3596 return 0;
3597}
de45f3a8 3598
55c84efc 3599static inline int clr_config_signal_stop(const char *key, struct lxc_conf *c,
26471403 3600 void *data)
de45f3a8
CB		 3601{
3602 c->stopsignal = 0;
3603 return 0;
3604}
c6182222 3605
26471403
CB		 3606static inline int clr_config_start(const char *key, struct lxc_conf *c,
3607 void *data)
c6182222
CB		 3608{
3609 if (strcmp(key + 10, "auto") == 0)
3610 c->start_auto = 0;
3611 else if (strcmp(key + 10, "delay") == 0)
3612 c->start_delay = 0;
3613 else if (strcmp(key + 10, "order") == 0)
3614 c->start_order = 0;
3615
3616 return 0;
3617}
998ca94f 3618
46cc906d 3619static inline int clr_config_log_syslog(const char *key, struct lxc_conf *c,
26471403 3620 void *data)
998ca94f
CB		 3621{
3622 free(c->syslog);
3623 c->syslog = NULL;
3624 return 0;
3625}
adad12ca 3626
26471403
CB		 3627static inline int clr_config_monitor(const char *key, struct lxc_conf *c,
3628 void *data)
adad12ca
CB		 3629{
3630 c->monitor_unshare = 0;
3631 return 0;
3632}
4850d223 3633
26471403
CB		 3634static inline int clr_config_group(const char *key, struct lxc_conf *c,
3635 void *data)
4850d223
CB		 3636{
3637 return lxc_clear_groups(c);
3638}
832fb63a 3639
26471403
CB		 3640static inline int clr_config_environment(const char *key, struct lxc_conf *c,
3641 void *data)
832fb63a
CB		 3642{
3643 return lxc_clear_environment(c);
4850d223 3644}
8e90af3e 3645
5cda27c1
SH		 3646static inline int clr_config_execute_cmd(const char *key, struct lxc_conf *c,
3647 void *data)
3648{
3649 free(c->execute_cmd);
3650 c->execute_cmd = NULL;
3651 return 0;
3652}
3653
26471403
CB		 3654static inline int clr_config_init_cmd(const char *key, struct lxc_conf *c,
3655 void *data)
8e90af3e
CB		 3656{
3657 free(c->init_cmd);
3658 c->init_cmd = NULL;
3659 return 0;
3660}
ec76dcfb 3661
26471403
CB		 3662static inline int clr_config_init_uid(const char *key, struct lxc_conf *c,
3663 void *data)
ec76dcfb
CB		 3664{
3665 c->init_uid = 0;
3666 return 0;
3667}
1044b247 3668
26471403
CB		 3669static inline int clr_config_init_gid(const char *key, struct lxc_conf *c,
3670 void *data)
1044b247
CB		 3671{
3672 c->init_gid = 0;
3673 return 0;
3674}
59e370db 3675
26471403
CB		 3676static inline int clr_config_ephemeral(const char *key, struct lxc_conf *c,
3677 void *data)
59e370db
CB		 3678{
3679 c->ephemeral = 0;
3680 return 0;
3681}
b98c5ab0 3682
26471403
CB		 3683static inline int clr_config_no_new_privs(const char *key, struct lxc_conf *c,
3684 void *data)
b98c5ab0
CB		 3685{
3686 c->no_new_privs = false;
3687 return 0;
3688}
715ccc96 3689
240d4b74 3690static inline int clr_config_prlimit(const char *key, struct lxc_conf *c,
26471403 3691 void *data)
715ccc96
CB		 3692{
3693 return lxc_clear_limits(c, key);
3694}
fdf3c589 3695
26471403
CB		 3696static inline int clr_config_includefiles(const char *key, struct lxc_conf *c,
3697 void *data)
fdf3c589
CB		 3698{
3699 lxc_clear_includes(c);
3700 return 0;
3701}
a3c8e600 3702
63bab717
CB		 3703static inline int clr_config_noop(const char *key, struct lxc_conf *c,
3704 void *data)
3705{
3706 return 0;
3707}
3708
28d9e29e
CB		 3709static int clr_config_namespace(const char *key, struct lxc_conf *lxc_conf,
3710 void *data)
3711{
3712 int ns_idx;
3713 const char *namespace;
3714
3715 namespace = key + sizeof("lxc.namespace.") - 1;
3716 ns_idx = lxc_namespace_2_ns_idx(namespace);
3717 if (ns_idx < 0)
3718 return ns_idx;
3719
3720 free(lxc_conf->inherit_ns[ns_idx]);
3721 lxc_conf->inherit_ns[ns_idx] = NULL;
3722
3723 return 0;
3724}
3725
a3c8e600 3726static int get_config_includefiles(const char *key, char *retv, int inlen,
cccd2219 3727 struct lxc_conf *c, void *data)
a3c8e600
CB		 3728{
3729 return -ENOSYS;
3730}
40db5d2f 3731
31ee747b
CB		 3732static struct lxc_config_t *get_network_config_ops(const char *key,
3733 struct lxc_conf *lxc_conf,
3734 ssize_t *idx,
3735 char **deindexed_key)
40db5d2f 3736{
31ee747b
CB		 3737 int ret;
3738 unsigned int tmpidx;
3739 size_t numstrlen;
40db5d2f
CB		 3740 char *copy, *idx_start, *idx_end;
3741 struct lxc_config_t *config = NULL;
3742
3743 /* check that this is a sensible network key */
31ee747b
CB		 3744 if (strncmp("lxc.net.", key, 8)) {
3745 ERROR("Invalid network configuration key \"%s\"", key);
40db5d2f 3746 return NULL;
31ee747b 3747 }
40db5d2f
CB		 3748
3749 copy = strdup(key);
31ee747b
CB		 3750 if (!copy) {
3751 ERROR("Failed to duplicate string \"%s\"", key);
40db5d2f 3752 return NULL;
31ee747b 3753 }
40db5d2f 3754
f9373e40 3755 /* lxc.net.<n> */
31ee747b
CB		 3756 if (!isdigit(*(key + 8))) {
3757 ERROR("Failed to detect digit in string \"%s\"", key + 8);
3758 goto on_error;
3759 }
40db5d2f 3760
31ee747b
CB		 3761 /* beginning of index string */
3762 idx_start = (copy + 7);
3763 *idx_start = '\0';
40db5d2f 3764
31ee747b
CB		 3765 /* end of index string */
3766 idx_end = strchr((copy + 8), '.');
7451daf8
CB		 3767 if (idx_end)
3768 *idx_end = '\0';
31ee747b
CB		 3769
3770 /* parse current index */
3771 ret = lxc_safe_uint((idx_start + 1), &tmpidx);
3772 if (ret < 0) {
3773 ERROR("Failed to parse usigned integer from string \"%s\": %s",
3774 idx_start + 1, strerror(-ret));
3775 *idx = ret;
3776 goto on_error;
3777 }
40db5d2f 3778
31ee747b
CB		 3779 /* This, of course is utterly nonsensical on so many levels, but
3780 * better safe than sorry.
3781 * (Checking for INT_MAX here is intentional.)
3782 */
3783 if (tmpidx == INT_MAX) {
25a908b8
CB		 3784 SYSERROR("Number of configured networks would overflow the "
3785 "counter");
31ee747b 3786 goto on_error;
40db5d2f 3787 }
31ee747b
CB		 3788 *idx = tmpidx;
3789
3790 numstrlen = strlen((idx_start + 1));
3791
3792 /* repair configuration key */
3793 *idx_start = '.';
31ee747b 3794
7451daf8
CB		 3795 /* lxc.net.<idx>.<subkey> */
3796 if (idx_end) {
3797 *idx_end = '.';
40db5d2f 3798
7451daf8
CB		 3799 memmove(copy + 8, idx_end + 1, strlen(idx_end + 1));
3800 copy[strlen(key) - numstrlen + 1] = '\0';
3801
300df83e 3802 config = lxc_get_config(copy);
7451daf8 3803 if (!config) {
25a908b8 3804 ERROR("Unknown network configuration key \"%s\"", key);
7451daf8
CB		 3805 goto on_error;
3806 }
31ee747b
CB		 3807 }
3808
7451daf8
CB		 3809 if (deindexed_key)
3810 *deindexed_key = copy;
3811
31ee747b 3812 return config;
40db5d2f
CB		 3813
3814on_error:
3815 free(copy);
31ee747b 3816 return NULL;
40db5d2f
CB		 3817}
3818
25a908b8
CB		 3819/* Config entry is something like "lxc.net.0.ipv4" the key 'lxc.net.' was
3820 * found. So we make sure next comes an integer, find the right callback (by
3821 * rewriting the key), and call it.
40db5d2f 3822 */
f9373e40
CB		 3823static int set_config_net_nic(const char *key, const char *value,
3824 struct lxc_conf *lxc_conf, void *data)
40db5d2f 3825{
31ee747b
CB		 3826 int ret;
3827 const char *idxstring;
40db5d2f
CB		 3828 struct lxc_config_t *config;
3829 struct lxc_netdev *netdev;
3830 ssize_t idx = -1;
31ee747b
CB		 3831 char *deindexed_key = NULL;
3832
3833 idxstring = key + 8;
3834 if (!isdigit(*idxstring))
3835 return -1;
40db5d2f 3836
6bed0fb6 3837 if (lxc_config_value_empty(value))
f9373e40 3838 return clr_config_net_nic(key, lxc_conf, data);
6bed0fb6 3839
31ee747b 3840 config = get_network_config_ops(key, lxc_conf, &idx, &deindexed_key);
40db5d2f
CB		 3841 if (!config || idx < 0)
3842 return -1;
3843
0070b1c4 3844 netdev = lxc_get_netdev_by_idx(lxc_conf, (unsigned int)idx, true);
31ee747b
CB		 3845 if (!netdev) {
3846 free(deindexed_key);
40db5d2f 3847 return -1;
31ee747b 3848 }
40db5d2f 3849
31ee747b
CB		 3850 ret = config->set(deindexed_key, value, lxc_conf, netdev);
3851 free(deindexed_key);
3852 return ret;
40db5d2f 3853}
ff6da295 3854
f9373e40
CB		 3855static int clr_config_net_nic(const char *key, struct lxc_conf *lxc_conf,
3856 void *data)
ff6da295 3857{
31ee747b 3858 int ret;
519df1c1 3859 const char *idxstring;
ff6da295
CB		 3860 struct lxc_config_t *config;
3861 struct lxc_netdev *netdev;
31ee747b
CB		 3862 ssize_t idx = -1;
3863 char *deindexed_key = NULL;
519df1c1 3864
31ee747b
CB		 3865 idxstring = key + 8;
3866 if (!isdigit(*idxstring))
519df1c1
CB		 3867 return -1;
3868
519df1c1 3869 /* The left conjunct is pretty self-explanatory. The right conjunct
31ee747b 3870 * checks whether the two pointers are equal. If they are we know that
519df1c1
CB		 3871 * this is not a key that is namespaced any further and so we are
3872 * supposed to clear the whole network.
3873 */
3874 if (isdigit(*idxstring) && (strrchr(key, '.') == (idxstring - 1))) {
3875 unsigned int rmnetdevidx;
3876
3877 if (lxc_safe_uint(idxstring, &rmnetdevidx) < 0)
3878 return -1;
3879
3880 /* Remove network from network list. */
3881 lxc_remove_nic_by_idx(lxc_conf, rmnetdevidx);
3882 return 0;
3883 }
ff6da295 3884
31ee747b 3885 config = get_network_config_ops(key, lxc_conf, &idx, &deindexed_key);
ff6da295
CB		 3886 if (!config || idx < 0)
3887 return -1;
3888
0070b1c4 3889 netdev = lxc_get_netdev_by_idx(lxc_conf, (unsigned int)idx, false);
31ee747b
CB		 3890 if (!netdev) {
3891 free(deindexed_key);
ff6da295 3892 return -1;
31ee747b 3893 }
ff6da295 3894
31ee747b
CB		 3895 ret = config->clr(deindexed_key, lxc_conf, netdev);
3896 free(deindexed_key);
3897 return ret;
ff6da295
CB		 3898}
3899
f9373e40
CB		 3900static int clr_config_net_type(const char *key, struct lxc_conf *lxc_conf,
3901 void *data)
ff6da295
CB		 3902{
3903 struct lxc_netdev *netdev;
3904
f9373e40
CB		 3905 if (!data)
3906 return -1;
3907 else
ff6da295
CB		 3908 netdev = data;
3909 if (!netdev)
3910 return -1;
3911
3912 netdev->type = -1;
3913
3914 return 0;
3915}
3916
f9373e40
CB		 3917static int clr_config_net_name(const char *key, struct lxc_conf *lxc_conf,
3918 void *data)
ff6da295
CB		 3919{
3920 struct lxc_netdev *netdev;
3921
f9373e40
CB		 3922 if (!data)
3923 return -1;
3924 else
ff6da295
CB		 3925 netdev = data;
3926 if (!netdev)
3927 return -1;
3928
de4855a8 3929 netdev->name[0] = '\0';
ff6da295
CB		 3930
3931 return 0;
3932}
3933
f9373e40
CB		 3934static int clr_config_net_flags(const char *key, struct lxc_conf *lxc_conf,
3935 void *data)
ff6da295
CB		 3936{
3937 struct lxc_netdev *netdev;
3938
f9373e40
CB		 3939 if (!data)
3940 return -1;
3941 else
ff6da295
CB		 3942 netdev = data;
3943 if (!netdev)
3944 return -1;
3945
3946 netdev->flags = 0;
3947
3948 return 0;
3949}
3950
f9373e40
CB		 3951static int clr_config_net_link(const char *key, struct lxc_conf *lxc_conf,
3952 void *data)
ff6da295
CB		 3953{
3954 struct lxc_netdev *netdev;
3955
f9373e40
CB		 3956 if (!data)
3957 return -1;
3958 else
ff6da295
CB		 3959 netdev = data;
3960 if (!netdev)
3961 return -1;
3962
de4855a8 3963 netdev->link[0] = '\0';
ff6da295
CB		 3964
3965 return 0;
3966}
3967
f9373e40
CB		 3968static int clr_config_net_macvlan_mode(const char *key,
3969 struct lxc_conf *lxc_conf, void *data)
ff6da295
CB		 3970{
3971 struct lxc_netdev *netdev;
3972
f9373e40
CB		 3973 if (!data)
3974 return -1;
3975 else
ff6da295
CB		 3976 netdev = data;
3977 if (!netdev)
3978 return -1;
3979
6bed0fb6
CB		 3980 if (netdev->type != LXC_NET_MACVLAN)
3981 return 0;
3982
ff6da295
CB		 3983 netdev->priv.macvlan_attr.mode = -1;
3984
3985 return 0;
3986}
3987
f9373e40
CB		 3988static int clr_config_net_veth_pair(const char *key, struct lxc_conf *lxc_conf,
3989 void *data)
ff6da295
CB		 3990{
3991 struct lxc_netdev *netdev;
3992
f9373e40
CB		 3993 if (!data)
3994 return -1;
3995 else
ff6da295
CB		 3996 netdev = data;
3997 if (!netdev)
3998 return -1;
3999
de4855a8 4000 netdev->priv.veth_attr.pair[0] = '\0';
ff6da295
CB		 4001
4002 return 0;
4003}
4004
f9373e40
CB		 4005static int clr_config_net_script_up(const char *key, struct lxc_conf *lxc_conf,
4006 void *data)
ff6da295
CB		 4007{
4008 struct lxc_netdev *netdev;
4009
f9373e40
CB		 4010 if (!data)
4011 return -1;
4012 else
ff6da295
CB		 4013 netdev = data;
4014 if (!netdev)
4015 return -1;
4016
4017 free(netdev->upscript);
4018 netdev->upscript = NULL;
4019
4020 return 0;
4021}
4022
f9373e40
CB		 4023static int clr_config_net_script_down(const char *key,
4024 struct lxc_conf *lxc_conf, void *data)
ff6da295
CB		 4025{
4026 struct lxc_netdev *netdev;
4027
f9373e40
CB		 4028 if (!data)
4029 return -1;
4030 else
ff6da295
CB		 4031 netdev = data;
4032 if (!netdev)
4033 return -1;
4034
4035 free(netdev->downscript);
4036 netdev->downscript = NULL;
4037
4038 return 0;
4039}
4040
f9373e40
CB		 4041static int clr_config_net_hwaddr(const char *key, struct lxc_conf *lxc_conf,
4042 void *data)
ff6da295
CB		 4043{
4044 struct lxc_netdev *netdev;
4045
f9373e40
CB		 4046 if (!data)
4047 return -1;
4048 else
ff6da295
CB		 4049 netdev = data;
4050 if (!netdev)
4051 return -1;
4052
4053 free(netdev->hwaddr);
4054 netdev->hwaddr = NULL;
4055
4056 return 0;
4057}
4058
f9373e40
CB		 4059static int clr_config_net_mtu(const char *key, struct lxc_conf *lxc_conf,
4060 void *data)
ff6da295
CB		 4061{
4062 struct lxc_netdev *netdev;
4063
f9373e40
CB		 4064 if (!data)
4065 return -1;
4066 else
ff6da295
CB		 4067 netdev = data;
4068 if (!netdev)
4069 return -1;
4070
4071 free(netdev->mtu);
4072 netdev->mtu = NULL;
4073
4074 return 0;
4075}
4076
f9373e40
CB		 4077static int clr_config_net_vlan_id(const char *key, struct lxc_conf *lxc_conf,
4078 void *data)
ff6da295
CB		 4079{
4080 struct lxc_netdev *netdev;
4081
f9373e40
CB		 4082 if (!data)
4083 return -1;
4084 else
ff6da295
CB		 4085 netdev = data;
4086 if (!netdev)
4087 return -1;
4088
4089 netdev->priv.vlan_attr.vid = 0;
4090
4091 return 0;
4092}
4093
f9373e40
CB		 4094static int clr_config_net_ipv4_gateway(const char *key,
4095 struct lxc_conf *lxc_conf, void *data)
ff6da295
CB		 4096{
4097 struct lxc_netdev *netdev;
4098
f9373e40
CB		 4099 if (!data)
4100 return -1;
4101 else
ff6da295
CB		 4102 netdev = data;
4103 if (!netdev)
4104 return -1;
4105
4106 free(netdev->ipv4_gateway);
4107 netdev->ipv4_gateway = NULL;
4108
4109 return 0;
4110}
4111
9ff60df2
CB		 4112static int clr_config_net_ipv4_address(const char *key,
4113 struct lxc_conf *lxc_conf, void *data)
ff6da295
CB		 4114{
4115 struct lxc_netdev *netdev;
4116 struct lxc_list *cur, *next;
4117
f9373e40
CB		 4118 if (!data)
4119 return -1;
4120 else
ff6da295 4121 netdev = data;
ecbb3790
CB		 4122 if (!netdev)
4123 return -1;
ff6da295
CB		 4124
4125 lxc_list_for_each_safe(cur, &netdev->ipv4, next) {
4126 lxc_list_del(cur);
4127 free(cur->elem);
4128 free(cur);
4129 }
4130
4131 return 0;
4132}
4133
f9373e40
CB		 4134static int clr_config_net_ipv6_gateway(const char *key,
4135 struct lxc_conf *lxc_conf, void *data)
ff6da295
CB		 4136{
4137 struct lxc_netdev *netdev;
4138
f9373e40
CB		 4139 if (!data)
4140 return -1;
4141 else
ff6da295
CB		 4142 netdev = data;
4143 if (!netdev)
4144 return -1;
4145
4146 free(netdev->ipv6_gateway);
4147 netdev->ipv6_gateway = NULL;
4148
4149 return 0;
4150}
4151
2e44ae28
CB		 4152static int clr_config_net_ipv6_address(const char *key,
4153 struct lxc_conf *lxc_conf, void *data)
ff6da295
CB		 4154{
4155 struct lxc_netdev *netdev;
4156 struct lxc_list *cur, *next;
4157
f9373e40
CB		 4158 if (!data)
4159 return -1;
4160 else
ff6da295 4161 netdev = data;
ecbb3790
CB		 4162 if (!netdev)
4163 return -1;
ff6da295
CB		 4164
4165 lxc_list_for_each_safe(cur, &netdev->ipv6, next) {
4166 lxc_list_del(cur);
4167 free(cur->elem);
4168 free(cur);
4169 }
4170
4171 return 0;
4172}
9d4bf22d 4173
f9373e40
CB		 4174static int get_config_net_nic(const char *key, char *retv, int inlen,
4175 struct lxc_conf *c, void *data)
9d4bf22d 4176{
31ee747b
CB		 4177 int ret;
4178 const char *idxstring;
9d4bf22d
CB		 4179 struct lxc_config_t *config;
4180 struct lxc_netdev *netdev;
4181 ssize_t idx = -1;
31ee747b 4182 char *deindexed_key = NULL;
9d4bf22d 4183
31ee747b
CB		 4184 idxstring = key + 8;
4185 if (!isdigit(*idxstring))
4186 return -1;
4187
4188 config = get_network_config_ops(key, c, &idx, &deindexed_key);
9d4bf22d
CB		 4189 if (!config || idx < 0)
4190 return -1;
4191
0070b1c4 4192 netdev = lxc_get_netdev_by_idx(c, (unsigned int)idx, false);
31ee747b
CB		 4193 if (!netdev) {
4194 free(deindexed_key);
9d4bf22d 4195 return -1;
31ee747b 4196 }
9d4bf22d 4197
31ee747b
CB		 4198 ret = config->get(deindexed_key, retv, inlen, c, netdev);
4199 free(deindexed_key);
4200 return ret;
9d4bf22d
CB		 4201}
4202
f9373e40
CB		 4203static int get_config_net_type(const char *key, char *retv, int inlen,
4204 struct lxc_conf *c, void *data)
9d4bf22d
CB		 4205{
4206 int len, fulllen = 0;
4207 struct lxc_netdev *netdev;
4208
4209 if (!retv)
4210 inlen = 0;
4211 else
4212 memset(retv, 0, inlen);
4213
f9373e40
CB		 4214 if (!data)
4215 return -1;
4216 else
9d4bf22d
CB		 4217 netdev = data;
4218 if (!netdev)
4219 return -1;
4220
4221 strprint(retv, inlen, "%s", lxc_net_type_to_str(netdev->type));
4222
4223 return fulllen;
4224}
4225
f9373e40
CB		 4226static int get_config_net_flags(const char *key, char *retv, int inlen,
4227 struct lxc_conf *c, void *data)
9d4bf22d
CB		 4228{
4229 int len, fulllen = 0;
4230 struct lxc_netdev *netdev;
4231
4232 if (!retv)
4233 inlen = 0;
4234 else
4235 memset(retv, 0, inlen);
4236
f9373e40
CB		 4237 if (!data)
4238 return -1;
4239 else
9d4bf22d
CB		 4240 netdev = data;
4241 if (!netdev)
4242 return -1;
4243
4244 if (netdev->flags & IFF_UP)
4245 strprint(retv, inlen, "up");
4246
4247 return fulllen;
4248}
4249
f9373e40
CB		 4250static int get_config_net_link(const char *key, char *retv, int inlen,
4251 struct lxc_conf *c, void *data)
9d4bf22d
CB		 4252{
4253 int len, fulllen = 0;
4254 struct lxc_netdev *netdev;
4255
4256 if (!retv)
4257 inlen = 0;
4258 else
4259 memset(retv, 0, inlen);
4260
f9373e40
CB		 4261 if (!data)
4262 return -1;
4263 else
9d4bf22d
CB		 4264 netdev = data;
4265 if (!netdev)
4266 return -1;
4267
de4855a8 4268 if (netdev->link[0] != '\0')
9d4bf22d
CB		 4269 strprint(retv, inlen, "%s", netdev->link);
4270
4271 return fulllen;
4272}
4273
f9373e40
CB		 4274static int get_config_net_name(const char *key, char *retv, int inlen,
4275 struct lxc_conf *c, void *data)
9d4bf22d
CB		 4276{
4277 int len, fulllen = 0;
4278 struct lxc_netdev *netdev;
4279
4280 if (!retv)
4281 inlen = 0;
4282 else
4283 memset(retv, 0, inlen);
4284
f9373e40
CB		 4285 if (!data)
4286 return -1;
4287 else
9d4bf22d
CB		 4288 netdev = data;
4289 if (!netdev)
4290 return -1;
4291
de4855a8 4292 if (netdev->name[0] != '\0')
9d4bf22d
CB		 4293 strprint(retv, inlen, "%s", netdev->name);
4294
4295 return fulllen;
4296}
4297
f9373e40
CB		 4298static int get_config_net_macvlan_mode(const char *key, char *retv, int inlen,
4299 struct lxc_conf *c, void *data)
9d4bf22d
CB		 4300{
4301 const char *mode;
4302 int len, fulllen = 0;
4303 struct lxc_netdev *netdev;
4304
4305 if (!retv)
4306 inlen = 0;
4307 else
4308 memset(retv, 0, inlen);
4309
f9373e40
CB		 4310 if (!data)
4311 return -1;
4312 else
9d4bf22d
CB		 4313 netdev = data;
4314 if (!netdev)
4315 return -1;
4316
4317 if (netdev->type != LXC_NET_MACVLAN)
4318 return 0;
4319
4320 switch (netdev->priv.macvlan_attr.mode) {
4321 case MACVLAN_MODE_PRIVATE:
4322 mode = "private";
4323 break;
4324 case MACVLAN_MODE_VEPA:
4325 mode = "vepa";
4326 break;
4327 case MACVLAN_MODE_BRIDGE:
4328 mode = "bridge";
4329 break;
4330 case MACVLAN_MODE_PASSTHRU:
4331 mode = "passthru";
4332 break;
4333 default:
4334 mode = "(invalid)";
4335 break;
4336 }
4337
4338 strprint(retv, inlen, "%s", mode);
4339
4340 return fulllen;
4341}
4342
f9373e40
CB		 4343static int get_config_net_veth_pair(const char *key, char *retv, int inlen,
4344 struct lxc_conf *c, void *data)
9d4bf22d
CB		 4345{
4346 int len, fulllen = 0;
4347 struct lxc_netdev *netdev;
4348
4349 if (!retv)
4350 inlen = 0;
4351 else
4352 memset(retv, 0, inlen);
4353
f9373e40
CB		 4354 if (!data)
4355 return -1;
4356 else
9d4bf22d
CB		 4357 netdev = data;
4358 if (!netdev)
4359 return -1;
4360
4361 if (netdev->type != LXC_NET_VETH)
4362 return 0;
4363
4364 strprint(retv, inlen, "%s",
de4855a8
CB		 4365 netdev->priv.veth_attr.pair[0] != '\0'
4366 ? netdev->priv.veth_attr.pair
4367 : netdev->priv.veth_attr.veth1);
9d4bf22d
CB		 4368
4369 return fulllen;
4370}
4371
f9373e40
CB		 4372static int get_config_net_script_up(const char *key, char *retv, int inlen,
4373 struct lxc_conf *c, void *data)
9d4bf22d
CB		 4374{
4375 int len, fulllen = 0;
4376 struct lxc_netdev *netdev;
4377
4378 if (!retv)
4379 inlen = 0;
4380 else
4381 memset(retv, 0, inlen);
4382
f9373e40
CB		 4383 if (!data)
4384 return -1;
4385 else
9d4bf22d
CB		 4386 netdev = data;
4387 if (!netdev)
4388 return -1;
4389
4390 if (netdev->upscript)
4391 strprint(retv, inlen, "%s", netdev->upscript);
4392
4393 return fulllen;
4394}
4395
f9373e40
CB		 4396static int get_config_net_script_down(const char *key, char *retv, int inlen,
4397 struct lxc_conf *c, void *data)
9d4bf22d
CB		 4398{
4399 int len, fulllen = 0;
4400 struct lxc_netdev *netdev;
4401
4402 if (!retv)
4403 inlen = 0;
4404 else
4405 memset(retv, 0, inlen);
4406
f9373e40
CB		 4407 if (!data)
4408 return -1;
4409 else
9d4bf22d
CB		 4410 netdev = data;
4411 if (!netdev)
4412 return -1;
4413
4414 if (netdev->downscript)
4415 strprint(retv, inlen, "%s", netdev->downscript);
4416
4417 return fulllen;
4418}
4419
f9373e40
CB		 4420static int get_config_net_hwaddr(const char *key, char *retv, int inlen,
4421 struct lxc_conf *c, void *data)
9d4bf22d
CB		 4422{
4423 int len, fulllen = 0;
4424 struct lxc_netdev *netdev;
4425
4426 if (!retv)
4427 inlen = 0;
4428 else
4429 memset(retv, 0, inlen);
4430
f9373e40
CB		 4431 if (!data)
4432 return -1;
4433 else
9d4bf22d
CB		 4434 netdev = data;
4435 if (!netdev)
4436 return -1;
4437
4438 if (netdev->hwaddr)
4439 strprint(retv, inlen, "%s", netdev->hwaddr);
4440
4441 return fulllen;
4442}
4443
f9373e40
CB		 4444static int get_config_net_mtu(const char *key, char *retv, int inlen,
4445 struct lxc_conf *c, void *data)
9d4bf22d
CB		 4446{
4447 int len, fulllen = 0;
4448 struct lxc_netdev *netdev;
4449
4450 if (!retv)
4451 inlen = 0;
4452 else
4453 memset(retv, 0, inlen);
4454
f9373e40
CB		 4455 if (!data)
4456 return -1;
4457 else
9d4bf22d
CB		 4458 netdev = data;
4459 if (!netdev)
4460 return -1;
4461
4462 if (netdev->mtu)
4463 strprint(retv, inlen, "%s", netdev->mtu);
4464
4465 return fulllen;
4466}
4467
f9373e40
CB		 4468static int get_config_net_vlan_id(const char *key, char *retv, int inlen,
4469 struct lxc_conf *c, void *data)
9d4bf22d
CB		 4470{
4471 int len, fulllen = 0;
4472 struct lxc_netdev *netdev;
4473
4474 if (!retv)
4475 inlen = 0;
4476 else
4477 memset(retv, 0, inlen);
4478
f9373e40
CB		 4479 if (!data)
4480 return -1;
4481 else
9d4bf22d
CB		 4482 netdev = data;
4483 if (!netdev)
4484 return -1;
4485
4486 if (netdev->type != LXC_NET_VLAN)
4487 return 0;
4488
4489 strprint(retv, inlen, "%d", netdev->priv.vlan_attr.vid);
4490
4491 return fulllen;
4492}
4493
f9373e40
CB		 4494static int get_config_net_ipv4_gateway(const char *key, char *retv, int inlen,
4495 struct lxc_conf *c, void *data)
9d4bf22d
CB		 4496{
4497 int len, fulllen = 0;
4498 char buf[INET_ADDRSTRLEN];
4499 struct lxc_netdev *netdev;
4500
4501 if (!retv)
4502 inlen = 0;
4503 else
4504 memset(retv, 0, inlen);
4505
f9373e40
CB		 4506 if (!data)
4507 return -1;
4508 else
9d4bf22d
CB		 4509 netdev = data;
4510 if (!netdev)
4511 return -1;
4512
4513 if (netdev->ipv4_gateway_auto) {
4514 strprint(retv, inlen, "auto");
4515 } else if (netdev->ipv4_gateway) {
4516 inet_ntop(AF_INET, netdev->ipv4_gateway, buf, sizeof(buf));
4517 strprint(retv, inlen, "%s", buf);
4518 }
4519
4520 return fulllen;
4521}
4522
9ff60df2
CB		 4523static int get_config_net_ipv4_address(const char *key, char *retv, int inlen,
4524 struct lxc_conf *c, void *data)
9d4bf22d
CB		 4525{
4526 int len, fulllen = 0;
4527 size_t listlen;
4528 char buf[INET_ADDRSTRLEN];
4529 struct lxc_netdev *netdev;
4530 struct lxc_list *it;
4531
4532 if (!retv)
4533 inlen = 0;
4534 else
4535 memset(retv, 0, inlen);
4536
f9373e40
CB		 4537 if (!data)
4538 return -1;
4539 else
9d4bf22d
CB		 4540 netdev = data;
4541 if (!netdev)
4542 return -1;
4543
4544 listlen = lxc_list_len(&netdev->ipv4);
4545 lxc_list_for_each(it, &netdev->ipv4) {
4546 struct lxc_inetdev *i = it->elem;
4547 inet_ntop(AF_INET, &i->addr, buf, sizeof(buf));
6fc7d8b6 4548 strprint(retv, inlen, "%s/%u%s", buf, i->prefix,
9d4bf22d
CB		 4549 (listlen-- > 1) ? "\n" : "");
4550 }
4551
4552 return fulllen;
4553}
4554
f9373e40
CB		 4555static int get_config_net_ipv6_gateway(const char *key, char *retv, int inlen,
4556 struct lxc_conf *c, void *data)
9d4bf22d
CB		 4557{
4558 int len, fulllen = 0;
4559 char buf[INET6_ADDRSTRLEN];
4560 struct lxc_netdev *netdev;
4561
4562 if (!retv)
4563 inlen = 0;
4564 else
4565 memset(retv, 0, inlen);
4566
f9373e40
CB		 4567 if (!data)
4568 return -1;
4569 else
9d4bf22d
CB		 4570 netdev = data;
4571 if (!netdev)
4572 return -1;
4573
4574 if (netdev->ipv6_gateway_auto) {
4575 strprint(retv, inlen, "auto");
4576 } else if (netdev->ipv6_gateway) {
4577 inet_ntop(AF_INET6, netdev->ipv6_gateway, buf, sizeof(buf));
4578 strprint(retv, inlen, "%s", buf);
4579 }
4580
4581 return fulllen;
4582}
4583
2e44ae28
CB		 4584static int get_config_net_ipv6_address(const char *key, char *retv, int inlen,
4585 struct lxc_conf *c, void *data)
9d4bf22d
CB		 4586{
4587 int len, fulllen = 0;
4588 size_t listlen;
4589 char buf[INET6_ADDRSTRLEN];
4590 struct lxc_netdev *netdev;
4591 struct lxc_list *it;
4592
4593 if (!retv)
4594 inlen = 0;
4595 else
4596 memset(retv, 0, inlen);
4597
f9373e40
CB		 4598 if (!data)
4599 return -1;
4600 else
9d4bf22d
CB		 4601 netdev = data;
4602 if (!netdev)
4603 return -1;
4604
4605 listlen = lxc_list_len(&netdev->ipv6);
4606 lxc_list_for_each(it, &netdev->ipv6) {
4607 struct lxc_inet6dev *i = it->elem;
4608 inet_ntop(AF_INET6, &i->addr, buf, sizeof(buf));
6fc7d8b6 4609 strprint(retv, inlen, "%s/%u%s", buf, i->prefix,
9d4bf22d
CB		 4610 (listlen-- > 1) ? "\n" : "");
4611 }
4612
4613 return fulllen;
4614}
cfc67626
CB		 4615
4616int lxc_list_config_items(char *retv, int inlen)
4617{
4618 size_t i;
4619 int len;
4620 int fulllen = 0;
4621
4622 if (!retv)
4623 inlen = 0;
4624 else
4625 memset(retv, 0, inlen);
4626
4627 for (i = 0; i < config_size; i++) {
4628 char *s = config[i].name;
300df83e 4629
cfc67626
CB		 4630 if (s[strlen(s) - 1] == '.')
4631 continue;
300df83e 4632
cfc67626
CB		 4633 strprint(retv, inlen, "%s\n", s);
4634 }
4635
4636 return fulllen;
4637}
a5448c15 4638
fe9b7349
CB		 4639int lxc_list_subkeys(struct lxc_conf *conf, const char *key, char *retv,
4640 int inlen)
4641{
4642 int len;
4643 int fulllen = 0;
4644
4645 if (!retv)
4646 inlen = 0;
4647 else
4648 memset(retv, 0, inlen);
4649
4650 if (!strcmp(key, "lxc.apparmor")) {
4651 strprint(retv, inlen, "allow_incomplete\n");
4652 strprint(retv, inlen, "profile\n");
dae8c253
CB		 4653 } else if (!strcmp(key, "lxc.cgroup")) {
4654 strprint(retv, inlen, "dir\n");
fe9b7349
CB		 4655 } else if (!strcmp(key, "lxc.selinux")) {
4656 strprint(retv, inlen, "context\n");
4657 } else if (!strcmp(key, "lxc.mount")) {
4658 strprint(retv, inlen, "auto\n");
4659 strprint(retv, inlen, "entry\n");
4660 strprint(retv, inlen, "fstab\n");
4661 } else if (!strcmp(key, "lxc.rootfs")) {
4662 strprint(retv, inlen, "mount\n");
4663 strprint(retv, inlen, "options\n");
4664 strprint(retv, inlen, "path\n");
4665 } else if (!strcmp(key, "lxc.uts")) {
4666 strprint(retv, inlen, "name\n");
4667 } else if (!strcmp(key, "lxc.hook")) {
4668 strprint(retv, inlen, "autodev\n");
4669 strprint(retv, inlen, "clone\n");
4670 strprint(retv, inlen, "destroy\n");
4671 strprint(retv, inlen, "mount\n");
4672 strprint(retv, inlen, "post-stop\n");
4673 strprint(retv, inlen, "pre-mount\n");
4674 strprint(retv, inlen, "pre-start\n");
08dd2805 4675 strprint(retv, inlen, "start-host\n");
fe9b7349
CB		 4676 strprint(retv, inlen, "start\n");
4677 strprint(retv, inlen, "stop\n");
4678 } else if (!strcmp(key, "lxc.cap")) {
4679 strprint(retv, inlen, "drop\n");
4680 strprint(retv, inlen, "keep\n");
4681 } else if (!strcmp(key, "lxc.console")) {
4682 strprint(retv, inlen, "logfile\n");
4683 strprint(retv, inlen, "path\n");
4684 } else if (!strcmp(key, "lxc.seccomp")) {
4685 strprint(retv, inlen, "profile\n");
4686 } else if (!strcmp(key, "lxc.signal")) {
4687 strprint(retv, inlen, "halt\n");
4688 strprint(retv, inlen, "reboot\n");
4689 strprint(retv, inlen, "stop\n");
4690 } else if (!strcmp(key, "lxc.start")) {
4691 strprint(retv, inlen, "auto\n");
4692 strprint(retv, inlen, "delay\n");
4693 strprint(retv, inlen, "order\n");
4694 } else if (!strcmp(key, "lxc.monitor")) {
4695 strprint(retv, inlen, "unshare\n");
4696 } else {
4697 fulllen = -1;
4698 }
4699
4700 return fulllen;
4701}
4702
a5448c15
CB		 4703int lxc_list_net(struct lxc_conf *c, const char *key, char *retv, int inlen)
4704{
4705 int len;
4706 const char *idxstring;
a5448c15
CB		 4707 struct lxc_netdev *netdev;
4708 int fulllen = 0;
4709 ssize_t idx = -1;
a5448c15
CB		 4710
4711 idxstring = key + 8;
4712 if (!isdigit(*idxstring))
4713 return -1;
4714
7451daf8
CB		 4715 (void)get_network_config_ops(key, c, &idx, NULL);
4716 if (idx < 0)
a5448c15
CB		 4717 return -1;
4718
4719 netdev = lxc_get_netdev_by_idx(c, (unsigned int)idx, false);
a5448c15
CB		 4720 if (!netdev)
4721 return -1;
4722
4723 if (!retv)
4724 inlen = 0;
4725 else
4726 memset(retv, 0, inlen);
4727
4728 strprint(retv, inlen, "type\n");
4729 strprint(retv, inlen, "script.up\n");
4730 strprint(retv, inlen, "script.down\n");
4731 if (netdev->type != LXC_NET_EMPTY) {
4732 strprint(retv, inlen, "flags\n");
4733 strprint(retv, inlen, "link\n");
4734 strprint(retv, inlen, "name\n");
4735 strprint(retv, inlen, "hwaddr\n");
4736 strprint(retv, inlen, "mtu\n");
4737 strprint(retv, inlen, "ipv6.address\n");
4738 strprint(retv, inlen, "ipv6.gateway\n");
4739 strprint(retv, inlen, "ipv4.address\n");
4740 strprint(retv, inlen, "ipv4.gateway\n");
4741 }
4742
4743 switch (netdev->type) {
4744 case LXC_NET_VETH:
4745 strprint(retv, inlen, "veth.pair\n");
4746 break;
4747 case LXC_NET_MACVLAN:
4748 strprint(retv, inlen, "macvlan.mode\n");
4749 break;
4750 case LXC_NET_VLAN:
4751 strprint(retv, inlen, "vlan.id\n");
4752 break;
4753 case LXC_NET_PHYS:
4754 break;
4755 }
4756
4757 return fulllen;
4758}
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