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conf: port environment to new list type
[mirror_lxc.git] / src / lxc / confile.c
CommitLineData
cc73685d 1/* SPDX-License-Identifier: LGPL-2.1+ */
70c1e708 2
d38dd64a
CB		 3#ifndef _GNU_SOURCE
4#define _GNU_SOURCE 1
5#endif
70c1e708 6#define __STDC_FORMAT_MACROS
d38dd64a 7#include <arpa/inet.h>
70c1e708
CB		 8#include <ctype.h>
9#include <dirent.h>
10#include <errno.h>
11#include <fcntl.h>
12#include <inttypes.h>
d38dd64a
CB		 13#include <net/if.h>
14#include <netinet/in.h>
70c1e708 15#include <signal.h>
c2cc9f0a 16#include <stdio.h>
17#include <stdlib.h>
18#include <string.h>
70c1e708 19#include <sys/param.h>
63376d7d 20#include <sys/stat.h>
c2cc9f0a 21#include <sys/types.h>
c2cc9f0a 22#include <sys/utsname.h>
d38dd64a
CB		 23#include <syslog.h>
24#include <time.h>
25#include <unistd.h>
c2cc9f0a 26
86ce1da1 27#include "af_unix.h"
70c1e708 28#include "conf.h"
6ff05e18 29#include "config.h"
525f0002 30#include "confile.h"
0b843d35 31#include "confile_utils.h"
d38dd64a 32#include "../include/netns_ifaddrs.h"
f2363e38 33#include "log.h"
58e0f57d 34#include "lxcseccomp.h"
fdf76c6d 35#include "macro.h"
f01d0358 36#include "memory_utils.h"
70c1e708
CB		 37#include "network.h"
38#include "parse.h"
5f126977 39#include "storage/storage.h"
70c1e708 40#include "utils.h"
36eb9bde 41
43f984ea
DJ		 42#ifndef HAVE_STRLCPY
43#include "include/strlcpy.h"
44#endif
45
ebcd5140
DJ		 46#ifndef HAVE_STRLCAT
47#include "include/strlcat.h"
48#endif
49
ac2cecc4 50lxc_log_define(confile, lxc);
576f946d 51
afeec9b7
CB		 52#define lxc_config_define(name) \
53 __hot static int set_config_##name(const char *, const char *, \
54 struct lxc_conf *, void *); \
55 __hot static int get_config_##name(const char *, char *, int, \
56 struct lxc_conf *, void *); \
57 __hot static int clr_config_##name(const char *, struct lxc_conf *, \
58 void *);
71e287ca 59
63bab717 60lxc_config_define(autodev);
63012bdd 61lxc_config_define(autodev_tmpfs_size);
71e287ca 62lxc_config_define(apparmor_allow_incomplete);
1800f924 63lxc_config_define(apparmor_allow_nesting);
63bab717 64lxc_config_define(apparmor_profile);
1800f924 65lxc_config_define(apparmor_raw);
63bab717
CB		 66lxc_config_define(cap_drop);
67lxc_config_define(cap_keep);
43654d34 68lxc_config_define(cgroup_controller);
54860ed0 69lxc_config_define(cgroup2_controller);
43654d34 70lxc_config_define(cgroup_dir);
a900cbaf 71lxc_config_define(cgroup_monitor_dir);
7696c1f9 72lxc_config_define(cgroup_monitor_pivot_dir);
a900cbaf
WB		 73lxc_config_define(cgroup_container_dir);
74lxc_config_define(cgroup_container_inner_dir);
9caee129 75lxc_config_define(cgroup_relative);
28f3b1cd 76lxc_config_define(console_buffer_size);
861813e5 77lxc_config_define(console_logfile);
63bab717 78lxc_config_define(console_path);
861813e5
CB		 79lxc_config_define(console_rotate);
80lxc_config_define(console_size);
6773e108 81lxc_config_define(unsupported_key);
63bab717
CB		 82lxc_config_define(environment);
83lxc_config_define(ephemeral);
84lxc_config_define(execute_cmd);
85lxc_config_define(group);
86lxc_config_define(hooks);
44ae0fb6 87lxc_config_define(hooks_version);
71e287ca 88lxc_config_define(idmaps);
63bab717
CB		 89lxc_config_define(includefiles);
90lxc_config_define(init_cmd);
3c491553 91lxc_config_define(init_cwd);
63bab717
CB		 92lxc_config_define(init_gid);
93lxc_config_define(init_uid);
bf31b337 94lxc_config_define(init_groups);
7707b0e0 95lxc_config_define(jump_table_net);
8f818a84 96lxc_config_define(keyring_session);
46cc906d 97lxc_config_define(log_file);
63bab717
CB		 98lxc_config_define(log_level);
99lxc_config_define(log_syslog);
100lxc_config_define(monitor);
258f8051 101lxc_config_define(monitor_signal_pdeath);
71e287ca 102lxc_config_define(mount);
103lxc_config_define(mount_auto);
47148e96 104lxc_config_define(mount_fstab);
1d8d3676 105lxc_config_define(namespace_clone);
abeb5bba 106lxc_config_define(namespace_keep);
70fd7fc9
CB		 107lxc_config_define(time_offset_boot);
108lxc_config_define(time_offset_monotonic);
b074bbf1 109lxc_config_define(namespace_share);
63bab717 110lxc_config_define(net);
71e287ca 111lxc_config_define(net_flags);
71e287ca 112lxc_config_define(net_hwaddr);
9ff60df2 113lxc_config_define(net_ipv4_address);
71e287ca 114lxc_config_define(net_ipv4_gateway);
2e44ae28 115lxc_config_define(net_ipv6_address);
71e287ca 116lxc_config_define(net_ipv6_gateway);
63bab717 117lxc_config_define(net_link);
6509154d 118lxc_config_define(net_l2proxy);
63bab717 119lxc_config_define(net_macvlan_mode);
c9f52382 120lxc_config_define(net_ipvlan_mode);
121lxc_config_define(net_ipvlan_isolation);
63bab717
CB		 122lxc_config_define(net_mtu);
123lxc_config_define(net_name);
63bab717
CB		 124lxc_config_define(net_script_down);
125lxc_config_define(net_script_up);
126lxc_config_define(net_type);
3f0ed090 127lxc_config_define(net_veth_mode);
63bab717 128lxc_config_define(net_veth_pair);
d4a7da46 129lxc_config_define(net_veth_ipv4_route);
130lxc_config_define(net_veth_ipv6_route);
fdf76c6d 131lxc_config_define(net_veth_vlan_id);
b8e06d33 132lxc_config_define(net_veth_vlan_tagged_id);
63bab717
CB		 133lxc_config_define(net_vlan_id);
134lxc_config_define(no_new_privs);
63bab717
CB		 135lxc_config_define(personality);
136lxc_config_define(prlimit);
137lxc_config_define(pty_max);
6e54330c 138lxc_config_define(rootfs_managed);
63bab717
CB		 139lxc_config_define(rootfs_mount);
140lxc_config_define(rootfs_options);
141lxc_config_define(rootfs_path);
0b427da0 142lxc_config_define(seccomp_profile);
50d86993 143lxc_config_define(seccomp_allow_nesting);
84cf6d25 144lxc_config_define(seccomp_notify_cookie);
86ce1da1 145lxc_config_define(seccomp_notify_proxy);
63bab717 146lxc_config_define(selinux_context);
4fef78bc 147lxc_config_define(selinux_context_keyring);
55c84efc 148lxc_config_define(signal_halt);
149lxc_config_define(signal_reboot);
150lxc_config_define(signal_stop);
71e287ca 151lxc_config_define(start);
63bab717
CB		 152lxc_config_define(tty_max);
153lxc_config_define(tty_dir);
154lxc_config_define(uts_name);
7edd0540 155lxc_config_define(sysctl);
61d7a733 156lxc_config_define(proc);
c2cc9f0a 157
6773e108
CB		 158static int set_config_unsupported_key(const char *key, const char *value,
159 struct lxc_conf *lxc_conf, void *data)
160{
161 return syserror_set(-EINVAL, "Unsupported config key \"%s\"", key);
162}
163
164static int get_config_unsupported_key(const char *key, char *retv, int inlen,
165 struct lxc_conf *c, void *data)
166{
167 return syserror_set(-EINVAL, "Unsupported config key \"%s\"", key);
168}
169
170static int clr_config_unsupported_key(const char *key,
171 struct lxc_conf *lxc_conf, void *data)
172{
173 return syserror_set(-EINVAL, "Unsupported config key \"%s\"", key);
174}
175
20c3318a
MB		 176/*
177 * Important Note:
4110345b 178 * If a new config option is added to this table, be aware that
20c3318a
MB		 179 * the order in which the options are places into the table matters.
180 * That means that more specific options of a namespace have to be
181 * placed above more generic ones.
182 *
183 * For instance: If lxc.ab is placed before lxc.ab.c, the config option
184 * lxc.ab.c will always be matched to lxc.ab. That is, the lxc.ab.c option
185 * has to be placed above lxc.ab.
186 */
33eb2ec1 187static struct lxc_config_t config_jump_table[] = {
12babd78
CB		 188 { "lxc.arch", true, set_config_personality, get_config_personality, clr_config_personality, },
189 { "lxc.apparmor.profile", true, set_config_apparmor_profile, get_config_apparmor_profile, clr_config_apparmor_profile, },
190 { "lxc.apparmor.allow_incomplete", true, set_config_apparmor_allow_incomplete, get_config_apparmor_allow_incomplete, clr_config_apparmor_allow_incomplete, },
191 { "lxc.apparmor.allow_nesting", true, set_config_apparmor_allow_nesting, get_config_apparmor_allow_nesting, clr_config_apparmor_allow_nesting, },
192 { "lxc.apparmor.raw", true, set_config_apparmor_raw, get_config_apparmor_raw, clr_config_apparmor_raw, },
193 { "lxc.autodev.tmpfs.size", true, set_config_autodev_tmpfs_size, get_config_autodev_tmpfs_size, clr_config_autodev_tmpfs_size, },
194 { "lxc.autodev", true, set_config_autodev, get_config_autodev, clr_config_autodev, },
195 { "lxc.cap.drop", true, set_config_cap_drop, get_config_cap_drop, clr_config_cap_drop, },
196 { "lxc.cap.keep", true, set_config_cap_keep, get_config_cap_keep, clr_config_cap_keep, },
197 { "lxc.cgroup2", false, set_config_cgroup2_controller, get_config_cgroup2_controller, clr_config_cgroup2_controller, },
198 { "lxc.cgroup.dir.monitor.pivot", true, set_config_cgroup_monitor_pivot_dir, get_config_cgroup_monitor_pivot_dir, clr_config_cgroup_monitor_pivot_dir, },
199 { "lxc.cgroup.dir.monitor", true, set_config_cgroup_monitor_dir, get_config_cgroup_monitor_dir, clr_config_cgroup_monitor_dir, },
200 { "lxc.cgroup.dir.container.inner", true, set_config_cgroup_container_inner_dir, get_config_cgroup_container_inner_dir, clr_config_cgroup_container_inner_dir, },
201 { "lxc.cgroup.dir.container", true, set_config_cgroup_container_dir, get_config_cgroup_container_dir, clr_config_cgroup_container_dir, },
202 { "lxc.cgroup.dir", true, set_config_cgroup_dir, get_config_cgroup_dir, clr_config_cgroup_dir, },
203 { "lxc.cgroup.relative", true, set_config_cgroup_relative, get_config_cgroup_relative, clr_config_cgroup_relative, },
204 { "lxc.cgroup", false, set_config_cgroup_controller, get_config_cgroup_controller, clr_config_cgroup_controller, },
205 { "lxc.console.buffer.size", true, set_config_console_buffer_size, get_config_console_buffer_size, clr_config_console_buffer_size, },
206 { "lxc.console.logfile", true, set_config_console_logfile, get_config_console_logfile, clr_config_console_logfile, },
207 { "lxc.console.path", true, set_config_console_path, get_config_console_path, clr_config_console_path, },
208 { "lxc.console.rotate", true, set_config_console_rotate, get_config_console_rotate, clr_config_console_rotate, },
209 { "lxc.console.size", true, set_config_console_size, get_config_console_size, clr_config_console_size, },
210 { "lxc.environment", true, set_config_environment, get_config_environment, clr_config_environment, },
211 { "lxc.ephemeral", true, set_config_ephemeral, get_config_ephemeral, clr_config_ephemeral, },
212 { "lxc.execute.cmd", true, set_config_execute_cmd, get_config_execute_cmd, clr_config_execute_cmd, },
213 { "lxc.group", true, set_config_group, get_config_group, clr_config_group, },
214 { "lxc.hook.autodev", true, set_config_hooks, get_config_hooks, clr_config_hooks, },
215 { "lxc.hook.clone", true, set_config_hooks, get_config_hooks, clr_config_hooks, },
216 { "lxc.hook.destroy", true, set_config_hooks, get_config_hooks, clr_config_hooks, },
217 { "lxc.hook.mount", true, set_config_hooks, get_config_hooks, clr_config_hooks, },
218 { "lxc.hook.post-stop", true, set_config_hooks, get_config_hooks, clr_config_hooks, },
219 { "lxc.hook.pre-mount", true, set_config_hooks, get_config_hooks, clr_config_hooks, },
220 { "lxc.hook.pre-start", true, set_config_hooks, get_config_hooks, clr_config_hooks, },
221 { "lxc.hook.start", true, set_config_hooks, get_config_hooks, clr_config_hooks, },
222 { "lxc.hook.start-host", true, set_config_hooks, get_config_hooks, clr_config_hooks, },
223 { "lxc.hook.stop", true, set_config_hooks, get_config_hooks, clr_config_hooks, },
224 { "lxc.hook.version", true, set_config_hooks_version, get_config_hooks_version, clr_config_hooks_version, },
225 { "lxc.hook", true, set_config_hooks, get_config_hooks, clr_config_hooks, },
226 { "lxc.idmap", true, set_config_idmaps, get_config_idmaps, clr_config_idmaps, },
227 { "lxc.include", true, set_config_includefiles, get_config_includefiles, clr_config_includefiles, },
228 { "lxc.init.cmd", true, set_config_init_cmd, get_config_init_cmd, clr_config_init_cmd, },
229 { "lxc.init.gid", true, set_config_init_gid, get_config_init_gid, clr_config_init_gid, },
230 { "lxc.init.groups", true, set_config_init_groups, get_config_init_groups, clr_config_init_groups, },
231 { "lxc.init.uid", true, set_config_init_uid, get_config_init_uid, clr_config_init_uid, },
232 { "lxc.init.cwd", true, set_config_init_cwd, get_config_init_cwd, clr_config_init_cwd, },
233 { "lxc.keyring.session", true, set_config_keyring_session, get_config_keyring_session, clr_config_keyring_session },
234 { "lxc.log.file", true, set_config_log_file, get_config_log_file, clr_config_log_file, },
235 { "lxc.log.level", true, set_config_log_level, get_config_log_level, clr_config_log_level, },
236 { "lxc.log.syslog", true, set_config_log_syslog, get_config_log_syslog, clr_config_log_syslog, },
237 { "lxc.monitor.unshare", true, set_config_monitor, get_config_monitor, clr_config_monitor, },
238 { "lxc.monitor.signal.pdeath", true, set_config_monitor_signal_pdeath, get_config_monitor_signal_pdeath, clr_config_monitor_signal_pdeath, },
239 { "lxc.mount.auto", true, set_config_mount_auto, get_config_mount_auto, clr_config_mount_auto, },
240 { "lxc.mount.entry", true, set_config_mount, get_config_mount, clr_config_mount, },
241 { "lxc.mount.fstab", true, set_config_mount_fstab, get_config_mount_fstab, clr_config_mount_fstab, },
242 { "lxc.namespace.clone", true, set_config_namespace_clone, get_config_namespace_clone, clr_config_namespace_clone, },
243 { "lxc.namespace.keep", true, set_config_namespace_keep, get_config_namespace_keep, clr_config_namespace_keep, },
057d2cae 244 { "lxc.namespace.share.", false, set_config_namespace_share, get_config_namespace_share, clr_config_namespace_share, },
7707b0e0 245 { "lxc.time.offset.boot", true, set_config_time_offset_boot, get_config_time_offset_boot, clr_config_time_offset_boot, },
12babd78 246 { "lxc.time.offset.monotonic", true, set_config_time_offset_monotonic, get_config_time_offset_monotonic, clr_config_time_offset_monotonic, },
7707b0e0 247 { "lxc.net.", false, set_config_jump_table_net, get_config_jump_table_net, clr_config_jump_table_net, },
12babd78
CB		 248 { "lxc.net", true, set_config_net, get_config_net, clr_config_net, },
249 { "lxc.no_new_privs", true, set_config_no_new_privs, get_config_no_new_privs, clr_config_no_new_privs, },
250 { "lxc.prlimit", false, set_config_prlimit, get_config_prlimit, clr_config_prlimit, },
251 { "lxc.pty.max", true, set_config_pty_max, get_config_pty_max, clr_config_pty_max, },
252 { "lxc.rootfs.managed", true, set_config_rootfs_managed, get_config_rootfs_managed, clr_config_rootfs_managed, },
253 { "lxc.rootfs.mount", true, set_config_rootfs_mount, get_config_rootfs_mount, clr_config_rootfs_mount, },
254 { "lxc.rootfs.options", true, set_config_rootfs_options, get_config_rootfs_options, clr_config_rootfs_options, },
255 { "lxc.rootfs.path", true, set_config_rootfs_path, get_config_rootfs_path, clr_config_rootfs_path, },
256 { "lxc.seccomp.allow_nesting", true, set_config_seccomp_allow_nesting, get_config_seccomp_allow_nesting, clr_config_seccomp_allow_nesting, },
257 { "lxc.seccomp.notify.cookie", true, set_config_seccomp_notify_cookie, get_config_seccomp_notify_cookie, clr_config_seccomp_notify_cookie, },
258 { "lxc.seccomp.notify.proxy", true, set_config_seccomp_notify_proxy, get_config_seccomp_notify_proxy, clr_config_seccomp_notify_proxy, },
259 { "lxc.seccomp.profile", true, set_config_seccomp_profile, get_config_seccomp_profile, clr_config_seccomp_profile, },
260 { "lxc.selinux.context.keyring", true, set_config_selinux_context_keyring, get_config_selinux_context_keyring, clr_config_selinux_context_keyring },
261 { "lxc.selinux.context", true, set_config_selinux_context, get_config_selinux_context, clr_config_selinux_context, },
262 { "lxc.signal.halt", true, set_config_signal_halt, get_config_signal_halt, clr_config_signal_halt, },
263 { "lxc.signal.reboot", true, set_config_signal_reboot, get_config_signal_reboot, clr_config_signal_reboot, },
264 { "lxc.signal.stop", true, set_config_signal_stop, get_config_signal_stop, clr_config_signal_stop, },
265 { "lxc.start.auto", true, set_config_start, get_config_start, clr_config_start, },
266 { "lxc.start.delay", true, set_config_start, get_config_start, clr_config_start, },
267 { "lxc.start.order", true, set_config_start, get_config_start, clr_config_start, },
268 { "lxc.tty.dir", true, set_config_tty_dir, get_config_tty_dir, clr_config_tty_dir, },
269 { "lxc.tty.max", true, set_config_tty_max, get_config_tty_max, clr_config_tty_max, },
270 { "lxc.uts.name", true, set_config_uts_name, get_config_uts_name, clr_config_uts_name, },
271 { "lxc.sysctl", false, set_config_sysctl, get_config_sysctl, clr_config_sysctl, },
272 { "lxc.proc", false, set_config_proc, get_config_proc, clr_config_proc, },
a84b9932
AV		 273};
274
6773e108
CB		 275static struct lxc_config_t unsupported_config_key = {
276 NULL,
277 false,
278 set_config_unsupported_key,
279 get_config_unsupported_key,
280 clr_config_unsupported_key,
281};
282
7707b0e0
CB		 283struct lxc_config_net_t {
284 LXC_CONFIG_MEMBERS;
285};
286
287static struct lxc_config_net_t config_jump_table_net[] = {
0abcc213
CB		 288 /* If a longer key is added please update. */
289 #define NETWORK_SUBKEY_SIZE_MAX (STRLITERALLEN("veth.vlan.tagged.id") * 2)
290 { "flags", true, set_config_net_flags, get_config_net_flags, clr_config_net_flags, },
291 { "hwaddr", true, set_config_net_hwaddr, get_config_net_hwaddr, clr_config_net_hwaddr, },
292 { "ipv4.address", true, set_config_net_ipv4_address, get_config_net_ipv4_address, clr_config_net_ipv4_address, },
293 { "ipv4.gateway", true, set_config_net_ipv4_gateway, get_config_net_ipv4_gateway, clr_config_net_ipv4_gateway, },
294 { "ipv6.address", true, set_config_net_ipv6_address, get_config_net_ipv6_address, clr_config_net_ipv6_address, },
295 { "ipv6.gateway", true, set_config_net_ipv6_gateway, get_config_net_ipv6_gateway, clr_config_net_ipv6_gateway, },
296 { "link", true, set_config_net_link, get_config_net_link, clr_config_net_link, },
297 { "l2proxy", true, set_config_net_l2proxy, get_config_net_l2proxy, clr_config_net_l2proxy, },
298 { "macvlan.mode", true, set_config_net_macvlan_mode, get_config_net_macvlan_mode, clr_config_net_macvlan_mode, },
299 { "ipvlan.mode", true, set_config_net_ipvlan_mode, get_config_net_ipvlan_mode, clr_config_net_ipvlan_mode, },
300 { "ipvlan.isolation", true, set_config_net_ipvlan_isolation, get_config_net_ipvlan_isolation, clr_config_net_ipvlan_isolation, },
301 { "mtu", true, set_config_net_mtu, get_config_net_mtu, clr_config_net_mtu, },
302 { "name", true, set_config_net_name, get_config_net_name, clr_config_net_name, },
303 { "script.down", true, set_config_net_script_down, get_config_net_script_down, clr_config_net_script_down, },
304 { "script.up", true, set_config_net_script_up, get_config_net_script_up, clr_config_net_script_up, },
305 { "type", true, set_config_net_type, get_config_net_type, clr_config_net_type, },
306 { "vlan.id", true, set_config_net_vlan_id, get_config_net_vlan_id, clr_config_net_vlan_id, },
307 { "veth.mode", true, set_config_net_veth_mode, get_config_net_veth_mode, clr_config_net_veth_mode, },
308 { "veth.pair", true, set_config_net_veth_pair, get_config_net_veth_pair, clr_config_net_veth_pair, },
309 { "veth.ipv4.route", true, set_config_net_veth_ipv4_route, get_config_net_veth_ipv4_route, clr_config_net_veth_ipv4_route, },
310 { "veth.ipv6.route", true, set_config_net_veth_ipv6_route, get_config_net_veth_ipv6_route, clr_config_net_veth_ipv6_route, },
311 { "veth.vlan.id", true, set_config_net_veth_vlan_id, get_config_net_veth_vlan_id, clr_config_net_veth_vlan_id, },
312 { "veth.vlan.tagged.id", true, set_config_net_veth_vlan_tagged_id, get_config_net_veth_vlan_tagged_id, clr_config_net_veth_vlan_tagged_id, },
313};
c2cc9f0a 314
6773e108
CB		 315static struct lxc_config_net_t unsupported_config_net_key = {
316 NULL,
317 false,
318 set_config_unsupported_key,
319 get_config_unsupported_key,
320 clr_config_unsupported_key,
321};
322
6eb516a7
RJ		 323struct lxc_config_t *lxc_get_config_exact(const char *key)
324{
325 size_t i;
326
0abcc213 327 for (i = 0; i < ARRAY_SIZE(config_jump_table); i++)
d62177e9 328 if (strequal(config_jump_table[i].name, key))
6eb516a7
RJ		 329 return &config_jump_table[i];
330
331 return NULL;
332}
333
ae393e13
CB		 334/* Assume a reasonable subkey size limit. */
335#define LXC_SUBKEY_LEN_MAX 256
336
337static inline int match_config_item(const struct lxc_config_t *entry, const char *key)
0abcc213 338{
ae393e13
CB		 339 size_t len;
340
0abcc213
CB		 341 if (entry->strict)
342 return strequal(entry->name, key);
ae393e13
CB		 343
344 /* There should be no subkey longer than this. */
345 len = strnlen(entry->name, LXC_SUBKEY_LEN_MAX);
346 if (len == LXC_SUBKEY_LEN_MAX)
347 return error_ret(-E2BIG, "Excessive subkey length");
348
349 return strnequal(entry->name, key, len);
0abcc213 350}
6eb516a7 351
300df83e 352struct lxc_config_t *lxc_get_config(const char *key)
c2cc9f0a 353{
0abcc213 354 for (size_t i = 0; i < ARRAY_SIZE(config_jump_table); i++) {
12babd78 355 struct lxc_config_t *cur = &config_jump_table[i];
12babd78 356
ae393e13
CB		 357 switch (match_config_item(cur, key)) {
358 case 0:
0abcc213 359 continue;
ae393e13 360 case -E2BIG:
6773e108 361 return &unsupported_config_key;
ae393e13 362 }
0abcc213
CB		 363
364 return cur;
365 }
366
6773e108 367 return &unsupported_config_key;
0abcc213
CB		 368}
369
7707b0e0
CB		 370static inline bool match_config_net_item(const struct lxc_config_net_t *entry,
371 const char *key)
372{
373 if (entry->strict)
374 return strequal(entry->name, key);
375 return strnequal(entry->name, key, strlen(entry->name));
376}
377
378static struct lxc_config_net_t *lxc_get_config_net(const char *key)
0abcc213
CB		 379{
380 for (size_t i = 0; i < ARRAY_SIZE(config_jump_table_net); i++) {
7707b0e0 381 struct lxc_config_net_t *cur = &config_jump_table_net[i];
0abcc213 382
7707b0e0 383 if (!match_config_net_item(cur, key))
12babd78
CB		 384 continue;
385
386 return cur;
387 }
300df83e 388
6773e108 389 return &unsupported_config_net_key;
c2cc9f0a 390}
391
f9373e40
CB		 392static int set_config_net(const char *key, const char *value,
393 struct lxc_conf *lxc_conf, void *data)
6b0d5538 394{
b28be01f
CB		 395 if (!lxc_config_value_empty(value))
396 return syserror_set(-EINVAL, "lxc.net must not have a value");
6b0d5538 397
f9373e40 398 return clr_config_net(key, lxc_conf, data);
6b0d5538
SH		 399}
400
f9373e40
CB		 401static int set_config_net_type(const char *key, const char *value,
402 struct lxc_conf *lxc_conf, void *data)
c2cc9f0a 403{
070a05af 404 struct lxc_netdev *netdev = data;
c2cc9f0a 405
bbc079cf 406 if (!netdev)
059a1ec3 407 return ret_errno(EINVAL);
c2cc9f0a 408
8d508eaa 409 clr_config_net_type(key, lxc_conf, data);
299ddd16 410 if (lxc_config_value_empty(value))
8d508eaa 411 return 0;
299ddd16 412
d62177e9 413 if (strequal(value, "veth")) {
24654103 414 netdev->type = LXC_NET_VETH;
d4a7da46 415 lxc_list_init(&netdev->priv.veth_attr.ipv4_routes);
416 lxc_list_init(&netdev->priv.veth_attr.ipv6_routes);
b8e06d33 417 lxc_list_init(&netdev->priv.veth_attr.vlan_tagged_ids);
756cadb6
CB		 418 if (!lxc_veth_flag_to_mode(netdev->priv.veth_attr.mode))
419 lxc_veth_mode_to_flag(&netdev->priv.veth_attr.mode, "bridge");
d62177e9 420 } else if (strequal(value, "macvlan")) {
24654103 421 netdev->type = LXC_NET_MACVLAN;
756cadb6
CB		 422 if (!lxc_macvlan_flag_to_mode(netdev->priv.veth_attr.mode))
423 lxc_macvlan_mode_to_flag(&netdev->priv.macvlan_attr.mode, "private");
d62177e9 424 } else if (strequal(value, "ipvlan")) {
c9f52382 425 netdev->type = LXC_NET_IPVLAN;
756cadb6
CB		 426 if (!lxc_ipvlan_flag_to_mode(netdev->priv.ipvlan_attr.mode))
427 lxc_ipvlan_mode_to_flag(&netdev->priv.ipvlan_attr.mode, "l3");
428 if (!lxc_ipvlan_flag_to_isolation(netdev->priv.ipvlan_attr.isolation))
429 lxc_ipvlan_isolation_to_flag(&netdev->priv.ipvlan_attr.isolation, "bridge");
d62177e9 430 } else if (strequal(value, "vlan")) {
24654103 431 netdev->type = LXC_NET_VLAN;
d62177e9 432 } else if (strequal(value, "phys")) {
24654103 433 netdev->type = LXC_NET_PHYS;
d62177e9 434 } else if (strequal(value, "empty")) {
24654103 435 netdev->type = LXC_NET_EMPTY;
43e2a964
CB		 436 /* We don't support custom loopback device names. */
437 (void)strlcpy(netdev->name, "lo", IFNAMSIZ);
d62177e9 438 } else if (strequal(value, "none")) {
26b797f3 439 netdev->type = LXC_NET_NONE;
bbc079cf 440 } else {
059a1ec3 441 return log_error(-1, "Invalid network type %s", value);
c2cc9f0a 442 }
bbc079cf 443
c2cc9f0a 444 return 0;
445}
446
f9373e40
CB		 447static int set_config_net_flags(const char *key, const char *value,
448 struct lxc_conf *lxc_conf, void *data)
c2cc9f0a 449{
070a05af 450 struct lxc_netdev *netdev = data;
c2cc9f0a 451
33c945e0 452 if (!netdev)
059a1ec3 453 return ret_errno(EINVAL);
c2cc9f0a 454
299ddd16
CB		 455 if (lxc_config_value_empty(value))
456 return clr_config_net_flags(key, lxc_conf, data);
457
33c945e0 458 netdev->flags |= IFF_UP;
c2cc9f0a 459
33c945e0
MT		 460 return 0;
461}
462
b45e32f9 463static int create_matched_ifnames(const char *value, struct lxc_conf *lxc_conf,
d5aba460 464 struct lxc_netdev *netdev)
576400e5 465{
c4ef8f4c
CB		 466 call_cleaner(netns_freeifaddrs) struct netns_ifaddrs *ifaddr = NULL;
467 struct netns_ifaddrs *ifa;
504a2217
CB		 468 int n;
469 int ret = 0;
f9373e40
CB		 470 const char *type_key = "lxc.net.type";
471 const char *link_key = "lxc.net.link";
576400e5 472 const char *tmpvalue = "phys";
576400e5 473
c4ef8f4c
CB		 474 if (netns_getifaddrs(&ifaddr, -1, &(bool){false}) < 0)
475 return log_error_errno(-1, errno, "Failed to get network interfaces");
576400e5 476
477 for (ifa = ifaddr, n = 0; ifa != NULL; ifa = ifa->ifa_next, n++) {
478 if (!ifa->ifa_addr)
479 continue;
47903908 480
576400e5 481 if (ifa->ifa_addr->sa_family != AF_PACKET)
482 continue;
483
1af3044f 484 if (strnequal(value, ifa->ifa_name, strlen(value) - 1)) {
f9373e40
CB		 485 ret = set_config_net_type(type_key, tmpvalue, lxc_conf,
486 netdev);
576400e5 487 if (!ret) {
f9373e40 488 ret = set_config_net_link(
c302b476 489 link_key, ifa->ifa_name, lxc_conf, netdev);
576400e5 490 if (ret) {
47903908 491 ERROR("Failed to create matched ifnames");
576400e5 492 break;
493 }
494 } else {
47903908 495 ERROR("Failed to create matched ifnames");
576400e5 496 break;
497 }
498 }
499 }
500
576400e5 501 return ret;
502}
503
f9373e40
CB		 504static int set_config_net_link(const char *key, const char *value,
505 struct lxc_conf *lxc_conf, void *data)
33c945e0 506{
070a05af 507 struct lxc_netdev *netdev = data;
576400e5 508 int ret = 0;
33c945e0 509
33c945e0 510 if (!netdev)
059a1ec3 511 return ret_errno(EINVAL);
c2cc9f0a 512
299ddd16
CB		 513 if (lxc_config_value_empty(value))
514 return clr_config_net_link(key, lxc_conf, data);
515
b45e32f9
CB		 516 if (value[strlen(value) - 1] == '+' && netdev->type == LXC_NET_PHYS)
517 ret = create_matched_ifnames(value, lxc_conf, netdev);
518 else
18cd4b54 519 ret = network_ifname(netdev->link, value, sizeof(netdev->link));
576400e5 520
521 return ret;
c2cc9f0a 522}
523
6509154d 524static int set_config_net_l2proxy(const char *key, const char *value,
525 struct lxc_conf *lxc_conf, void *data)
526{
527 struct lxc_netdev *netdev = data;
528 unsigned int val = 0;
529 int ret;
530
6509154d 531 if (!netdev)
059a1ec3 532 return ret_errno(EINVAL);
6509154d 533
299ddd16
CB		 534 if (lxc_config_value_empty(value))
535 return clr_config_net_l2proxy(key, lxc_conf, data);
536
6509154d 537 ret = lxc_safe_uint(value, &val);
538 if (ret < 0)
bcdeed91 539 return ret_errno(ret);
6509154d 540
541 switch (val) {
542 case 0:
543 netdev->l2proxy = false;
544 return 0;
545 case 1:
546 netdev->l2proxy = true;
547 return 0;
548 }
549
bcdeed91 550 return ret_errno(EINVAL);
6509154d 551}
552
f9373e40
CB		 553static int set_config_net_name(const char *key, const char *value,
554 struct lxc_conf *lxc_conf, void *data)
c2cc9f0a 555{
070a05af 556 struct lxc_netdev *netdev = data;
c2cc9f0a 557
33c945e0 558 if (!netdev)
059a1ec3 559 return ret_errno(EINVAL);
c2cc9f0a 560
299ddd16
CB		 561 if (lxc_config_value_empty(value))
562 return clr_config_net_name(key, lxc_conf, data);
563
18cd4b54 564 return network_ifname(netdev->name, value, sizeof(netdev->name));
33c945e0
MT		 565}
566
3f0ed090
TP		 567
568static int set_config_net_veth_mode(const char *key, const char *value,
569 struct lxc_conf *lxc_conf, void *data)
570{
571 struct lxc_netdev *netdev = data;
572
299ddd16
CB		 573 if (!netdev)
574 return ret_errno(EINVAL);
575
576 if (netdev->type != LXC_NET_VETH)
577 return ret_errno(EINVAL);
578
3f0ed090
TP		 579 if (lxc_config_value_empty(value))
580 return clr_config_net_veth_mode(key, lxc_conf, data);
581
582 if (!netdev)
059a1ec3 583 return ret_errno(EINVAL);
3f0ed090
TP		 584
585 return lxc_veth_mode_to_flag(&netdev->priv.veth_attr.mode, value);
586}
587
f9373e40
CB		 588static int set_config_net_veth_pair(const char *key, const char *value,
589 struct lxc_conf *lxc_conf, void *data)
e892973e 590{
070a05af 591 struct lxc_netdev *netdev = data;
e892973e 592
e892973e 593 if (!netdev)
059a1ec3 594 return ret_errno(EINVAL);
e892973e 595
299ddd16
CB		 596 if (netdev->type != LXC_NET_VETH)
597 return ret_errno(EINVAL);
598
599 if (lxc_config_value_empty(value))
600 return clr_config_net_veth_pair(key, lxc_conf, data);
601
059a1ec3
CB		 602 return network_ifname(netdev->priv.veth_attr.pair, value,
603 sizeof(netdev->priv.veth_attr.pair));
e892973e
DL		 604}
605
fdf76c6d 606static int set_config_net_veth_vlan_id(const char *key, const char *value,
299ddd16 607 struct lxc_conf *lxc_conf, void *data)
fdf76c6d
TP		 608{
609 int ret;
610 struct lxc_netdev *netdev = data;
611
612 if (!netdev)
613 return ret_errno(EINVAL);
614
299ddd16
CB		 615 if (netdev->type != LXC_NET_VETH)
616 return ret_errno(EINVAL);
617
fdf76c6d
TP		 618 if (lxc_config_value_empty(value))
619 return clr_config_net_veth_vlan_id(key, lxc_conf, data);
620
d62177e9 621 if (strequal(value, "none")) {
fdf76c6d
TP		 622 netdev->priv.veth_attr.vlan_id = BRIDGE_VLAN_NONE;
623 } else {
624 unsigned short vlan_id;
5837aa84 625
fdf76c6d
TP		 626 ret = get_u16(&vlan_id, value, 0);
627 if (ret < 0)
628 return ret_errno(EINVAL);
629
630 if (vlan_id > BRIDGE_VLAN_ID_MAX)
631 return ret_errno(EINVAL);
632
633 netdev->priv.veth_attr.vlan_id = vlan_id;
634 }
635
636 netdev->priv.veth_attr.vlan_id_set = true;
637 return 0;
638}
639
b8e06d33 640static int set_config_net_veth_vlan_tagged_id(const char *key, const char *value,
299ddd16
CB		 641 struct lxc_conf *lxc_conf,
642 void *data)
b8e06d33
TP		 643{
644 __do_free struct lxc_list *list = NULL;
645 int ret;
646 unsigned short vlan_id;
647 struct lxc_netdev *netdev = data;
648
649 if (!netdev)
650 return ret_errno(EINVAL);
651
299ddd16
CB		 652 if (netdev->type != LXC_NET_VETH)
653 return ret_errno(EINVAL);
654
b8e06d33
TP		 655 if (lxc_config_value_empty(value))
656 return clr_config_net_veth_vlan_tagged_id(key, lxc_conf, data);
657
658 ret = get_u16(&vlan_id, value, 0);
659 if (ret < 0)
5837aa84 660 return ret_errno(EINVAL);
b8e06d33
TP		 661
662 if (vlan_id > BRIDGE_VLAN_ID_MAX)
5837aa84 663 return ret_errno(EINVAL);
b8e06d33 664
642751cc 665 list = lxc_list_new();
b8e06d33
TP		 666 if (!list)
667 return ret_errno(ENOMEM);
668
b8e06d33
TP		 669 list->elem = UINT_TO_PTR(vlan_id);
670
671 lxc_list_add_tail(&netdev->priv.veth_attr.vlan_tagged_ids, move_ptr(list));
672
673 return 0;
674}
675
f9373e40
CB		 676static int set_config_net_macvlan_mode(const char *key, const char *value,
677 struct lxc_conf *lxc_conf, void *data)
8634bc19 678{
070a05af 679 struct lxc_netdev *netdev = data;
8634bc19 680
8634bc19 681 if (!netdev)
059a1ec3 682 return ret_errno(EINVAL);
8634bc19 683
299ddd16
CB		 684 if (netdev->type != LXC_NET_MACVLAN)
685 return ret_errno(EINVAL);
686
687 if (lxc_config_value_empty(value))
688 return clr_config_net_macvlan_mode(key, lxc_conf, data);
689
9b0df30f 690 return lxc_macvlan_mode_to_flag(&netdev->priv.macvlan_attr.mode, value);
8634bc19
MT		 691}
692
c9f52382 693static int set_config_net_ipvlan_mode(const char *key, const char *value,
299ddd16 694 struct lxc_conf *lxc_conf, void *data)
c9f52382 695{
696 struct lxc_netdev *netdev = data;
697
c9f52382 698 if (!netdev)
059a1ec3 699 return ret_errno(EINVAL);
c9f52382 700
059a1ec3 701 if (netdev->type != LXC_NET_IPVLAN)
299ddd16
CB		 702 return syserror_set(-EINVAL, "Invalid ipvlan mode \"%s\", can only be used with ipvlan network", value);
703
704 if (lxc_config_value_empty(value))
705 return clr_config_net_ipvlan_mode(key, lxc_conf, data);
c9f52382 706
707 return lxc_ipvlan_mode_to_flag(&netdev->priv.ipvlan_attr.mode, value);
708}
709
710static int set_config_net_ipvlan_isolation(const char *key, const char *value,
299ddd16 711 struct lxc_conf *lxc_conf, void *data)
c9f52382 712{
713 struct lxc_netdev *netdev = data;
714
c9f52382 715 if (!netdev)
059a1ec3 716 return ret_errno(EINVAL);
c9f52382 717
059a1ec3 718 if (netdev->type != LXC_NET_IPVLAN)
299ddd16
CB		 719 return syserror_set(-EINVAL, "Invalid ipvlan isolation \"%s\", can only be used with ipvlan network", value);
720
721 if (lxc_config_value_empty(value))
722 return clr_config_net_ipvlan_isolation(key, lxc_conf, data);
c9f52382 723
724 return lxc_ipvlan_isolation_to_flag(&netdev->priv.ipvlan_attr.isolation, value);
725}
726
f9373e40
CB		 727static int set_config_net_hwaddr(const char *key, const char *value,
728 struct lxc_conf *lxc_conf, void *data)
33c945e0 729{
0b73eb05 730 __do_free char *new_value = NULL;
070a05af 731 struct lxc_netdev *netdev = data;
33c945e0 732
ecbb3790 733 if (!netdev)
059a1ec3 734 return ret_errno(EINVAL);
ecbb3790 735
a8b7aefc 736 clr_config_net_hwaddr(key, lxc_conf, data);
299ddd16 737 if (lxc_config_value_empty(value))
a8b7aefc 738 return 0;
299ddd16 739
504a2217 740 new_value = strdup(value);
d5aba460 741 if (!new_value)
059a1ec3 742 return ret_errno(ENOMEM);
d5aba460 743
508c263e 744 rand_complete_hwaddr(new_value);
f6848c5f 745 if (!lxc_config_value_empty(new_value))
0b73eb05 746 netdev->hwaddr = move_ptr(new_value);
47903908 747
508c263e 748 return 0;
c2cc9f0a 749}
750
f9373e40
CB		 751static int set_config_net_vlan_id(const char *key, const char *value,
752 struct lxc_conf *lxc_conf, void *data)
26c39028 753{
d5aba460 754 int ret;
070a05af 755 struct lxc_netdev *netdev = data;
26c39028 756
26c39028 757 if (!netdev)
059a1ec3 758 return ret_errno(EINVAL);
26c39028 759
299ddd16
CB		 760 if (netdev->type != LXC_NET_VLAN)
761 return ret_errno(EINVAL);
762
763 if (lxc_config_value_empty(value))
764 return clr_config_net_vlan_id(key, lxc_conf, data);
765
d5aba460
CB		 766 ret = get_u16(&netdev->priv.vlan_attr.vid, value, 0);
767 if (ret < 0)
059a1ec3 768 return ret;
26c39028
JHS		 769
770 return 0;
771}
772
f9373e40
CB		 773static int set_config_net_mtu(const char *key, const char *value,
774 struct lxc_conf *lxc_conf, void *data)
442cbbe6 775{
070a05af 776 struct lxc_netdev *netdev = data;
442cbbe6 777
33c945e0 778 if (!netdev)
059a1ec3 779 return ret_errno(EINVAL);
442cbbe6 780
6d0297b9 781 clr_config_net_mtu(key, lxc_conf, data);
299ddd16 782 if (lxc_config_value_empty(value))
6d0297b9 783 return 0;
299ddd16 784
713046e3 785 return set_config_string_item(&netdev->mtu, value);
442cbbe6
TR		 786}
787
9ff60df2
CB		 788static int set_config_net_ipv4_address(const char *key, const char *value,
789 struct lxc_conf *lxc_conf, void *data)
c2cc9f0a 790{
059a1ec3
CB		 791 __do_free char *addr = NULL;
792 __do_free struct lxc_inetdev *inetdev = NULL;
793 __do_free struct lxc_list *list = NULL;
d5aba460 794 int ret;
070a05af 795 struct lxc_netdev *netdev = data;
504a2217 796 char *cursor, *slash;
059a1ec3 797 char *bcast = NULL, *prefix = NULL;
c2cc9f0a 798
33c945e0 799 if (!netdev)
059a1ec3 800 return ret_errno(EINVAL);
c2cc9f0a 801
299ddd16
CB		 802 if (lxc_config_value_empty(value))
803 return clr_config_net_ipv4_address(key, lxc_conf, data);
804
642751cc 805 inetdev = zalloc(sizeof(*inetdev));
d5aba460 806 if (!inetdev)
059a1ec3 807 return ret_errno(ENOMEM);
c2cc9f0a 808
642751cc 809 list = lxc_list_new();
059a1ec3
CB		 810 if (!list)
811 return ret_errno(ENOMEM);
c2cc9f0a 812
956edc54 813 addr = strdup(value);
059a1ec3
CB		 814 if (!addr)
815 return ret_errno(ENOMEM);
c2cc9f0a 816
817 cursor = strstr(addr, " ");
818 if (cursor) {
819 *cursor = '\0';
820 bcast = cursor + 1;
821 }
822
823 slash = strstr(addr, "/");
824 if (slash) {
825 *slash = '\0';
826 prefix = slash + 1;
827 }
828
d5aba460 829 ret = inet_pton(AF_INET, addr, &inetdev->addr);
059a1ec3
CB		 830 if (!ret || ret < 0)
831 return log_error_errno(-1, errno, "Invalid ipv4 address \"%s\"", value);
c2cc9f0a 832
d5aba460
CB		 833 if (bcast) {
834 ret = inet_pton(AF_INET, bcast, &inetdev->bcast);
059a1ec3
CB		 835 if (!ret || ret < 0)
836 return log_error_errno(-1, errno, "Invalid ipv4 broadcast address \"%s\"", value);
d5aba460 837
0093bb8c 838 }
c2cc9f0a 839
504a2217 840 /* No prefix specified, determine it from the network class. */
36513635
CB		 841 ret = 0;
842 if (prefix)
d5aba460 843 ret = lxc_safe_uint(prefix, &inetdev->prefix);
36513635 844 else
1c633398 845 inetdev->prefix = config_ip_prefix(&inetdev->addr);
36513635 846 if (ret || inetdev->prefix > 32)
79d2f54f 847 return ret_errno(EINVAL);
a059591e 848
36513635 849 /* If no broadcast address, compute one from the prefix and address. */
0093bb8c 850 if (!bcast) {
36513635
CB		 851 unsigned int shift = LAST_BIT_PER_TYPE(inetdev->prefix);
852
1b7d4743 853 inetdev->bcast.s_addr = inetdev->addr.s_addr;
36513635
CB		 854 if (inetdev->prefix < shift)
855 shift = inetdev->prefix;
856 inetdev->bcast.s_addr |= htonl(INADDR_BROADCAST >> shift);
0093bb8c 857 }
c2cc9f0a 858
059a1ec3 859 list->elem = inetdev;
8538f388 860 lxc_list_add_tail(&netdev->ipv4, list);
059a1ec3
CB		 861 move_ptr(inetdev);
862 move_ptr(list);
47903908 863
c2cc9f0a 864 return 0;
865}
866
f9373e40
CB		 867static int set_config_net_ipv4_gateway(const char *key, const char *value,
868 struct lxc_conf *lxc_conf, void *data)
f8fee0e2 869{
070a05af 870 struct lxc_netdev *netdev = data;
f8fee0e2 871
299ddd16
CB		 872 if (!netdev)
873 return ret_errno(EINVAL);
874
d21e9500 875 clr_config_net_ipv4_gateway(key, lxc_conf, data);
6bed0fb6 876 if (lxc_config_value_empty(value))
d21e9500 877 return 0;
f8fee0e2 878
d62177e9 879 if (strequal(value, "auto")) {
19a26f82
MK		 880 netdev->ipv4_gateway = NULL;
881 netdev->ipv4_gateway_auto = true;
d62177e9 882 } else if (strequal(value, "dev")) {
a2f9a670 883 netdev->ipv4_gateway = NULL;
884 netdev->ipv4_gateway_auto = false;
885 netdev->ipv4_gateway_dev = true;
19a26f82 886 } else {
059a1ec3 887 __do_free struct in_addr *gw = NULL;
25a908b8 888 int ret;
e088e926 889
642751cc 890 gw = zalloc(sizeof(*gw));
25a908b8 891 if (!gw)
059a1ec3 892 return ret_errno(ENOMEM);
e088e926 893
25a908b8 894 ret = inet_pton(AF_INET, value, gw);
059a1ec3
CB		 895 if (!ret || ret < 0)
896 return log_error_errno(-1, errno, "Invalid ipv4 gateway address \"%s\"", value);
19a26f82 897
059a1ec3 898 netdev->ipv4_gateway = move_ptr(gw);
19a26f82 899 netdev->ipv4_gateway_auto = false;
f8fee0e2
MK		 900 }
901
f8fee0e2
MK		 902 return 0;
903}
904
d4a7da46 905static int set_config_net_veth_ipv4_route(const char *key, const char *value,
299ddd16 906 struct lxc_conf *lxc_conf, void *data)
d4a7da46 907{
908 __do_free char *valdup = NULL;
909 __do_free struct lxc_inetdev *inetdev = NULL;
910 __do_free struct lxc_list *list = NULL;
911 int ret;
912 char *netmask, *slash;
913 struct lxc_netdev *netdev = data;
914
d4a7da46 915 if (!netdev)
059a1ec3 916 return ret_errno(EINVAL);
d4a7da46 917
059a1ec3 918 if (netdev->type != LXC_NET_VETH)
299ddd16
CB		 919 return syserror_set(-EINVAL, "Invalid ipv4 route \"%s\", can only be used with veth network", value);
920
921 if (lxc_config_value_empty(value))
922 return clr_config_net_veth_ipv4_route(key, lxc_conf, data);
d4a7da46 923
642751cc 924 inetdev = zalloc(sizeof(*inetdev));
d4a7da46 925 if (!inetdev)
059a1ec3 926 return ret_errno(ENOMEM);
d4a7da46 927
642751cc 928 list = lxc_list_new();
d4a7da46 929 if (!list)
059a1ec3 930 return ret_errno(ENOMEM);
d4a7da46 931
d4a7da46 932 list->elem = inetdev;
933
934 valdup = strdup(value);
935 if (!valdup)
059a1ec3 936 return ret_errno(ENOMEM);
d4a7da46 937
938 slash = strchr(valdup, '/');
939 if (!slash)
059a1ec3 940 return ret_errno(EINVAL);
d4a7da46 941
942 *slash = '\0';
943 slash++;
944 if (*slash == '\0')
059a1ec3 945 return ret_errno(EINVAL);
d4a7da46 946
947 netmask = slash;
948
949 ret = lxc_safe_uint(netmask, &inetdev->prefix);
950 if (ret < 0 || inetdev->prefix > 32)
059a1ec3 951 return ret_errno(EINVAL);
d4a7da46 952
953 ret = inet_pton(AF_INET, valdup, &inetdev->addr);
954 if (!ret || ret < 0)
059a1ec3 955 return ret_errno(EINVAL);
d4a7da46 956
957 lxc_list_add_tail(&netdev->priv.veth_attr.ipv4_routes, list);
958 move_ptr(inetdev);
959 move_ptr(list);
960
961 return 0;
962}
963
2e44ae28
CB		 964static int set_config_net_ipv6_address(const char *key, const char *value,
965 struct lxc_conf *lxc_conf, void *data)
c2cc9f0a 966{
059a1ec3
CB		 967 __do_free char *valdup = NULL;
968 __do_free struct lxc_inet6dev *inet6dev = NULL;
969 __do_free struct lxc_list *list = NULL;
25a908b8 970 int ret;
070a05af 971 struct lxc_netdev *netdev = data;
059a1ec3 972 char *slash, *netmask;
c2cc9f0a 973
33c945e0 974 if (!netdev)
059a1ec3 975 return ret_errno(EINVAL);
c2cc9f0a 976
299ddd16
CB		 977 if (lxc_config_value_empty(value))
978 return clr_config_net_ipv6_address(key, lxc_conf, data);
979
642751cc 980 inet6dev = zalloc(sizeof(*inet6dev));
25a908b8 981 if (!inet6dev)
059a1ec3 982 return ret_errno(ENOMEM);
c2cc9f0a 983
642751cc 984 list = lxc_list_new();
059a1ec3
CB		 985 if (!list)
986 return ret_errno(ENOMEM);
c2cc9f0a 987
956edc54 988 valdup = strdup(value);
059a1ec3
CB		 989 if (!valdup)
990 return ret_errno(ENOMEM);
956edc54 991
a059591e 992 inet6dev->prefix = 64;
12a50cc6 993 slash = strstr(valdup, "/");
c2cc9f0a 994 if (slash) {
995 *slash = '\0';
996 netmask = slash + 1;
47903908 997
f54f8d0b 998 ret = lxc_safe_uint(netmask, &inet6dev->prefix);
059a1ec3
CB		 999 if (ret < 0)
1000 return ret;
c2cc9f0a 1001 }
1002
25a908b8 1003 ret = inet_pton(AF_INET6, valdup, &inet6dev->addr);
059a1ec3
CB		 1004 if (!ret || ret < 0)
1005 return log_error_errno(-EINVAL, EINVAL, "Invalid ipv6 address \"%s\"", valdup);
c2cc9f0a 1006
059a1ec3 1007 list->elem = inet6dev;
8538f388 1008 lxc_list_add_tail(&netdev->ipv6, list);
059a1ec3
CB		 1009 move_ptr(inet6dev);
1010 move_ptr(list);
47903908 1011
c2cc9f0a 1012 return 0;
1013}
1014
f9373e40
CB		 1015static int set_config_net_ipv6_gateway(const char *key, const char *value,
1016 struct lxc_conf *lxc_conf, void *data)
f8fee0e2 1017{
070a05af 1018 struct lxc_netdev *netdev = data;
f8fee0e2 1019
f8fee0e2 1020 if (!netdev)
059a1ec3 1021 return ret_errno(EINVAL);
f8fee0e2 1022
e0f420d5 1023 clr_config_net_ipv6_gateway(key, lxc_conf, data);
299ddd16 1024 if (lxc_config_value_empty(value))
e0f420d5 1025 return 0;
f8fee0e2 1026
d62177e9 1027 if (strequal(value, "auto")) {
19a26f82
MK		 1028 netdev->ipv6_gateway = NULL;
1029 netdev->ipv6_gateway_auto = true;
d62177e9 1030 } else if (strequal(value, "dev")) {
a2f9a670 1031 netdev->ipv6_gateway = NULL;
1032 netdev->ipv6_gateway_auto = false;
1033 netdev->ipv6_gateway_dev = true;
19a26f82 1034 } else {
25a908b8 1035 int ret;
059a1ec3 1036 __do_free struct in6_addr *gw = NULL;
8fb86a37 1037
642751cc 1038 gw = zalloc(sizeof(*gw));
25a908b8 1039 if (!gw)
059a1ec3 1040 return ret_errno(ENOMEM);
bec695f3 1041
25a908b8 1042 ret = inet_pton(AF_INET6, value, gw);
059a1ec3
CB		 1043 if (!ret || ret < 0)
1044 return log_error_errno(-EINVAL, EINVAL,
1045 "Invalid ipv6 gateway address \"%s\"", value);
19a26f82 1046
059a1ec3 1047 netdev->ipv6_gateway = move_ptr(gw);
19a26f82 1048 netdev->ipv6_gateway_auto = false;
f8fee0e2
MK		 1049 }
1050
f8fee0e2
MK		 1051 return 0;
1052}
1053
d4a7da46 1054static int set_config_net_veth_ipv6_route(const char *key, const char *value,
299ddd16 1055 struct lxc_conf *lxc_conf, void *data)
d4a7da46 1056{
6453ba56
CB		 1057 __do_free char *valdup = NULL;
1058 __do_free struct lxc_inet6dev *inet6dev = NULL;
1059 __do_free struct lxc_list *list = NULL;
d4a7da46 1060 int ret;
1061 char *netmask, *slash;
1062 struct lxc_netdev *netdev = data;
1063
d4a7da46 1064 if (!netdev)
059a1ec3 1065 return ret_errno(EINVAL);
d4a7da46 1066
059a1ec3 1067 if (netdev->type != LXC_NET_VETH)
299ddd16
CB		 1068 return syserror_set(-EINVAL, "Invalid ipv6 route \"%s\", can only be used with veth network", value);
1069
1070 if (lxc_config_value_empty(value))
1071 return clr_config_net_veth_ipv6_route(key, lxc_conf, data);
d4a7da46 1072
642751cc 1073 inet6dev = zalloc(sizeof(*inet6dev));
d4a7da46 1074 if (!inet6dev)
059a1ec3 1075 return ret_errno(ENOMEM);
d4a7da46 1076
642751cc 1077 list = lxc_list_new();
d4a7da46 1078 if (!list)
059a1ec3 1079 return ret_errno(ENOMEM);
d4a7da46 1080
d4a7da46 1081 valdup = strdup(value);
1082 if (!valdup)
b28be01f 1083 return ret_errno(ENOMEM);
d4a7da46 1084
1085 slash = strchr(valdup, '/');
1086 if (!slash)
059a1ec3 1087 return ret_errno(EINVAL);
d4a7da46 1088
1089 *slash = '\0';
1090 slash++;
1091 if (*slash == '\0')
059a1ec3 1092 return ret_errno(EINVAL);
d4a7da46 1093
1094 netmask = slash;
1095
1096 ret = lxc_safe_uint(netmask, &inet6dev->prefix);
1097 if (ret < 0 || inet6dev->prefix > 128)
059a1ec3 1098 return ret_errno(EINVAL);
d4a7da46 1099
1100 ret = inet_pton(AF_INET6, valdup, &inet6dev->addr);
1101 if (!ret || ret < 0)
059a1ec3 1102 return ret_errno(EINVAL);
d4a7da46 1103
059a1ec3 1104 list->elem = inet6dev;
d4a7da46 1105 lxc_list_add_tail(&netdev->priv.veth_attr.ipv6_routes, list);
1106 move_ptr(inet6dev);
1107 move_ptr(list);
1108
1109 return 0;
1110}
1111
f9373e40
CB		 1112static int set_config_net_script_up(const char *key, const char *value,
1113 struct lxc_conf *lxc_conf, void *data)
e3b4c4c4 1114{
070a05af 1115 struct lxc_netdev *netdev = data;
e3b4c4c4 1116
e3b4c4c4 1117 if (!netdev)
059a1ec3 1118 return ret_errno(EINVAL);
e3b4c4c4 1119
040b3e1d 1120 clr_config_net_script_up(key, lxc_conf, data);
299ddd16 1121 if (lxc_config_value_empty(value))
040b3e1d 1122 return 0;
299ddd16 1123
713046e3 1124 return set_config_string_item(&netdev->upscript, value);
8fc8295a
DE		 1125}
1126
f9373e40
CB		 1127static int set_config_net_script_down(const char *key, const char *value,
1128 struct lxc_conf *lxc_conf, void *data)
8fc8295a 1129{
070a05af 1130 struct lxc_netdev *netdev = data;
8fc8295a 1131
8fc8295a 1132 if (!netdev)
059a1ec3 1133 return ret_errno(EINVAL);
8fc8295a 1134
f0383b96 1135 clr_config_net_script_down(key, lxc_conf, data);
299ddd16 1136 if (lxc_config_value_empty(value))
f0383b96 1137 return 0;
299ddd16 1138
713046e3 1139 return set_config_string_item(&netdev->downscript, value);
e3b4c4c4
ST		 1140}
1141
059a1ec3 1142static int add_hook(struct lxc_conf *lxc_conf, int which, __owns char *hook)
26ddeedd 1143{
059a1ec3 1144 __do_free char *val = hook;
26ddeedd
SH		 1145 struct lxc_list *hooklist;
1146
642751cc 1147 hooklist = lxc_list_new();
059a1ec3
CB		 1148 if (!hooklist)
1149 return ret_errno(ENOMEM);
504a2217 1150
059a1ec3 1151 hooklist->elem = move_ptr(val);
26ddeedd 1152 lxc_list_add_tail(&lxc_conf->hooks[which], hooklist);
47903908 1153
26ddeedd
SH		 1154 return 0;
1155}
1156
50d86993
CB		 1157static int set_config_seccomp_allow_nesting(const char *key, const char *value,
1158 struct lxc_conf *lxc_conf, void *data)
1159{
c3e3c21a 1160#ifdef HAVE_SECCOMP
50d86993
CB		 1161 if (lxc_config_value_empty(value))
1162 return clr_config_seccomp_allow_nesting(key, lxc_conf, NULL);
1163
c3e3c21a 1164 if (lxc_safe_uint(value, &lxc_conf->seccomp.allow_nesting) < 0)
b28be01f 1165 return -errno;
50d86993 1166
c3e3c21a 1167 if (lxc_conf->seccomp.allow_nesting > 1)
b28be01f 1168 return ret_errno(EINVAL);
86ce1da1
CB		 1169
1170 return 0;
c3e3c21a 1171#else
b28be01f 1172 return ret_errno(ENOSYS);
c3e3c21a 1173#endif
86ce1da1
CB		 1174}
1175
84cf6d25
WB		 1176static int set_config_seccomp_notify_cookie(const char *key, const char *value,
1177 struct lxc_conf *lxc_conf, void *data)
1178{
1179#ifdef HAVE_SECCOMP_NOTIFY
1180 return set_config_string_item(&lxc_conf->seccomp.notifier.cookie, value);
1181#else
b28be01f 1182 return ret_errno(ENOSYS);
84cf6d25
WB		 1183#endif
1184}
1185
86ce1da1
CB		 1186static int set_config_seccomp_notify_proxy(const char *key, const char *value,
1187 struct lxc_conf *lxc_conf, void *data)
1188{
c3e3c21a 1189#ifdef HAVE_SECCOMP_NOTIFY
86ce1da1
CB		 1190 const char *offset;
1191
1192 if (lxc_config_value_empty(value))
1193 return clr_config_seccomp_notify_proxy(key, lxc_conf, NULL);
1194
1af3044f 1195 if (!strnequal(value, "unix:", 5))
b28be01f 1196 return ret_errno(EINVAL);
86ce1da1
CB		 1197
1198 offset = value + 5;
c3e3c21a 1199 if (lxc_unix_sockaddr(&lxc_conf->seccomp.notifier.proxy_addr, offset) < 0)
b28be01f 1200 return -errno;
50d86993
CB		 1201
1202 return 0;
86ce1da1 1203#else
b28be01f 1204 return ret_errno(ENOSYS);
86ce1da1 1205#endif
50d86993
CB		 1206}
1207
0b427da0
CB		 1208static int set_config_seccomp_profile(const char *key, const char *value,
1209 struct lxc_conf *lxc_conf, void *data)
8f2c3a70 1210{
3d46e1d1 1211#ifdef HAVE_SECCOMP
c3e3c21a 1212 return set_config_path_item(&lxc_conf->seccomp.seccomp, value);
3d46e1d1 1213#else
b28be01f 1214 return ret_errno(ENOSYS);
3d46e1d1 1215#endif
8f2c3a70
SH		 1216}
1217
5cda27c1
SH		 1218static int set_config_execute_cmd(const char *key, const char *value,
1219 struct lxc_conf *lxc_conf, void *data)
1220{
1221 return set_config_path_item(&lxc_conf->execute_cmd, value);
1222}
1223
713046e3 1224static int set_config_init_cmd(const char *key, const char *value,
c7e27aaf 1225 struct lxc_conf *lxc_conf, void *data)
67c660d0 1226{
713046e3 1227 return set_config_path_item(&lxc_conf->init_cmd, value);
67c660d0
SG		 1228}
1229
3c491553
L		 1230static int set_config_init_cwd(const char *key, const char *value,
1231 struct lxc_conf *lxc_conf, void *data)
1232{
1233 return set_config_path_item(&lxc_conf->init_cwd, value);
1234}
1235
713046e3 1236static int set_config_init_uid(const char *key, const char *value,
c7e27aaf 1237 struct lxc_conf *lxc_conf, void *data)
72bb04e4 1238{
d1e5d636
CB		 1239 unsigned int init_uid;
1240
663e9916 1241 if (lxc_config_value_empty(value)) {
2e7cde40 1242 lxc_conf->init_uid = 0;
fee80911 1243 return 0;
2e7cde40 1244 }
fee80911 1245
d1e5d636 1246 if (lxc_safe_uint(value, &init_uid) < 0)
b28be01f 1247 return -errno;
25a908b8 1248
d1e5d636
CB		 1249 lxc_conf->init_uid = init_uid;
1250
72bb04e4
PT		 1251 return 0;
1252}
1253
713046e3 1254static int set_config_init_gid(const char *key, const char *value,
c7e27aaf 1255 struct lxc_conf *lxc_conf, void *data)
72bb04e4 1256{
d1e5d636
CB		 1257 unsigned int init_gid;
1258
663e9916 1259 if (lxc_config_value_empty(value)) {
2debb6e6 1260 lxc_conf->init_gid = 0;
a757cc7d 1261 return 0;
2debb6e6 1262 }
a757cc7d 1263
d1e5d636 1264 if (lxc_safe_uint(value, &init_gid) < 0)
b28be01f 1265 return -errno;
25a908b8 1266
d1e5d636
CB		 1267 lxc_conf->init_gid = init_gid;
1268
72bb04e4
PT		 1269 return 0;
1270}
1271
bf31b337
RJ		 1272static int set_config_init_groups(const char *key, const char *value,
1273 struct lxc_conf *lxc_conf, void *data)
1274{
1275 __do_free char *value_dup = NULL;
c71f64cb
CB		 1276 gid_t *init_groups = NULL;
1277 size_t num_groups = 0;
1278 size_t idx;
bf31b337
RJ		 1279 char *token;
1280
1281 if (lxc_config_value_empty(value))
1282 return clr_config_init_groups(key, lxc_conf, NULL);
1283
1284 value_dup = strdup(value);
1285 if (!value_dup)
1286 return -ENOMEM;
1287
1288 lxc_iterate_parts(token, value_dup, ",")
1289 num_groups++;
1290
c71f64cb
CB		 1291 if (num_groups == INT_MAX)
1292 return log_error_errno(-ERANGE, ERANGE, "Excessive number of supplementary groups specified");
1293
7fe8120e 1294 /* This means the string wasn't empty and all we found was garbage. */
bf31b337 1295 if (num_groups == 0)
7fe8120e 1296 return log_error_errno(-EINVAL, EINVAL, "No valid groups specified %s", value);
bf31b337 1297
c71f64cb
CB		 1298 idx = lxc_conf->init_groups.size;
1299 init_groups = realloc(lxc_conf->init_groups.list, sizeof(gid_t) * (idx + num_groups));
bf31b337
RJ		 1300 if (!init_groups)
1301 return ret_errno(ENOMEM);
1302
c71f64cb
CB		 1303 /*
1304 * Once the realloc() succeeded we need to hand control of the memory
1305 * back to the config otherwise we risk a double-free when
1306 * lxc_conf_free() is called.
1307 */
1308 lxc_conf->init_groups.list = init_groups;
1309
bf31b337
RJ		 1310 /* Restore duplicated value so we can call lxc_iterate_parts() again. */
1311 strcpy(value_dup, value);
1312
1313 lxc_iterate_parts(token, value_dup, ",") {
1314 int ret;
1315
1316 gid_t group;
1317
1318 ret = lxc_safe_uint(token, &group);
1319 if (ret)
7fe8120e 1320 return log_error_errno(ret, -ret, "Failed to parse group %s", token);
bf31b337 1321
c71f64cb 1322 init_groups[idx++] = group;
bf31b337
RJ		 1323 }
1324
c71f64cb 1325 lxc_conf->init_groups.size += num_groups;
bf31b337
RJ		 1326
1327 return 0;
1328}
1329
466c2e93 1330static int set_config_hooks(const char *key, const char *value,
c7e27aaf 1331 struct lxc_conf *lxc_conf, void *data)
26ddeedd 1332{
059a1ec3 1333 __do_free char *copy = NULL;
72bb04e4 1334
663e9916 1335 if (lxc_config_value_empty(value))
7d0eb87e
SH		 1336 return lxc_clear_hooks(lxc_conf, key);
1337
d62177e9 1338 if (strequal(key + 4, "hook"))
ed1454e8 1339 return log_error_errno(-EINVAL, EINVAL, "lxc.hook must not have a value");
25a908b8 1340
7d0eb87e 1341 copy = strdup(value);
25a908b8 1342 if (!copy)
059a1ec3 1343 return ret_errno(ENOMEM);
504a2217 1344
d62177e9 1345 if (strequal(key + 9, "pre-start"))
059a1ec3 1346 return add_hook(lxc_conf, LXCHOOK_PRESTART, move_ptr(copy));
d62177e9 1347 else if (strequal(key + 9, "start-host"))
059a1ec3 1348 return add_hook(lxc_conf, LXCHOOK_START_HOST, move_ptr(copy));
d62177e9 1349 else if (strequal(key + 9, "pre-mount"))
059a1ec3 1350 return add_hook(lxc_conf, LXCHOOK_PREMOUNT, move_ptr(copy));
d62177e9 1351 else if (strequal(key + 9, "autodev"))
059a1ec3 1352 return add_hook(lxc_conf, LXCHOOK_AUTODEV, move_ptr(copy));
d62177e9 1353 else if (strequal(key + 9, "mount"))
059a1ec3 1354 return add_hook(lxc_conf, LXCHOOK_MOUNT, move_ptr(copy));
d62177e9 1355 else if (strequal(key + 9, "start"))
059a1ec3 1356 return add_hook(lxc_conf, LXCHOOK_START, move_ptr(copy));
d62177e9 1357 else if (strequal(key + 9, "stop"))
059a1ec3 1358 return add_hook(lxc_conf, LXCHOOK_STOP, move_ptr(copy));
d62177e9 1359 else if (strequal(key + 9, "post-stop"))
059a1ec3 1360 return add_hook(lxc_conf, LXCHOOK_POSTSTOP, move_ptr(copy));
d62177e9 1361 else if (strequal(key + 9, "clone"))
059a1ec3 1362 return add_hook(lxc_conf, LXCHOOK_CLONE, move_ptr(copy));
d62177e9 1363 else if (strequal(key + 9, "destroy"))
059a1ec3 1364 return add_hook(lxc_conf, LXCHOOK_DESTROY, move_ptr(copy));
47903908 1365
667fcc0e 1366 return ret_errno(EINVAL);
26ddeedd
SH		 1367}
1368
44ae0fb6
CB		 1369static int set_config_hooks_version(const char *key, const char *value,
1370 struct lxc_conf *lxc_conf, void *data)
1371{
1372 int ret;
1373 unsigned int tmp;
1374
1375 if (lxc_config_value_empty(value))
1376 return clr_config_hooks_version(key, lxc_conf, NULL);
1377
1378 ret = lxc_safe_uint(value, &tmp);
1379 if (ret < 0)
b28be01f 1380 return -errno;
44ae0fb6 1381
ed1454e8 1382 if (tmp > 1)
b28be01f 1383 return syserror_set(-EINVAL, "Invalid hook version specified. Currently only 0 (legacy) and 1 are supported");
44ae0fb6
CB		 1384
1385 lxc_conf->hooks_version = tmp;
47903908 1386
44ae0fb6
CB		 1387 return 0;
1388}
1389
713046e3 1390static int set_config_personality(const char *key, const char *value,
c7e27aaf 1391 struct lxc_conf *lxc_conf, void *data)
cccc74b5 1392{
7c43fa56 1393 int ret;
64a04c84 1394 personality_t personality;
cccc74b5 1395
7c43fa56
CB		 1396 ret = lxc_config_parse_arch(value, &personality);
1397 if (ret < 0)
1398 return syserror("Unsupported personality \"%s\"", value);
970ab589 1399
7c43fa56 1400 lxc_conf->personality = personality;
970ab589 1401 return 0;
cccc74b5
DL		 1402}
1403
232763d6
CB		 1404static int set_config_pty_max(const char *key, const char *value,
1405 struct lxc_conf *lxc_conf, void *data)
10db618d 1406{
e528c735
CB		 1407 int ret;
1408 unsigned int max = 0;
1409
663e9916 1410 if (lxc_config_value_empty(value)) {
e528c735 1411 lxc_conf->pty_max = 0;
884a4580 1412 return 0;
ec200ce9 1413 }
884a4580 1414
e528c735
CB		 1415 ret = lxc_safe_uint(value, &max);
1416 if (ret < 0)
49aabd9d 1417 return ret_errno(EINVAL);
10db618d 1418
e528c735 1419 lxc_conf->pty_max = max;
47903908 1420
10db618d 1421 return 0;
1422}
1423
a182feae
CB		 1424/* We only need to check whether the first byte of the key after the lxc.start.
1425 * prefix matches our expectations since they fortunately all start with a
1426 * different letter. If anything was wrong with the key we would have already
1427 * noticed when the callback was called.
1428 */
713046e3 1429static int set_config_start(const char *key, const char *value,
c7e27aaf 1430 struct lxc_conf *lxc_conf, void *data)
ee1e7aa0 1431{
572f6a14 1432 int ret;
ebb80f95
CB		 1433 bool is_empty;
1434
663e9916 1435 is_empty = lxc_config_value_empty(value);
ebb80f95 1436
a182feae 1437 if (*(key + 10) == 'a') { /* lxc.start.auto */
ebb80f95
CB		 1438 if (is_empty) {
1439 lxc_conf->start_auto = 0;
1440 return 0;
1441 }
61ff8fc8 1442
572f6a14
CB		 1443 ret = lxc_safe_uint(value, &lxc_conf->start_auto);
1444 if (ret)
1445 return ret;
ebb80f95 1446
3590152f 1447 if (lxc_conf->start_auto > 1)
572f6a14 1448 return ret_errno(EINVAL);
ebb80f95 1449
ee1e7aa0 1450 return 0;
a182feae 1451 } else if (*(key + 10) == 'd') { /* lxc.start.delay */
ebb80f95
CB		 1452 if (is_empty) {
1453 lxc_conf->start_delay = 0;
1454 return 0;
1455 }
1456
ebb80f95 1457 return lxc_safe_uint(value, &lxc_conf->start_delay);
a182feae 1458 } else if (*(key + 10) == 'o') { /* lxc.start.order */
ebb80f95
CB		 1459 if (is_empty) {
1460 lxc_conf->start_order = 0;
1461 return 0;
1462 }
1463
ebb80f95 1464 return lxc_safe_int(value, &lxc_conf->start_order);
ee1e7aa0 1465 }
ebb80f95 1466
572f6a14 1467 return ret_errno(EINVAL);
ee1e7aa0
SG		 1468}
1469
713046e3 1470static int set_config_monitor(const char *key, const char *value,
c7e27aaf 1471 struct lxc_conf *lxc_conf, void *data)
a8dfe4e0 1472{
663e9916 1473 if (lxc_config_value_empty(value)) {
4ad9cd26 1474 lxc_conf->monitor_unshare = 0;
a8dfe4e0
WB		 1475 return 0;
1476 }
4ad9cd26 1477
d62177e9 1478 if (strequal(key + 12, "unshare"))
4ad9cd26
CB		 1479 return lxc_safe_uint(value, &lxc_conf->monitor_unshare);
1480
e1665973 1481 return ret_errno(EINVAL);
a8dfe4e0
WB		 1482}
1483
258f8051
CB		 1484static int set_config_monitor_signal_pdeath(const char *key, const char *value,
1485 struct lxc_conf *lxc_conf, void *data)
1486{
1487 if (lxc_config_value_empty(value)) {
1488 lxc_conf->monitor_signal_pdeath = 0;
1489 return 0;
1490 }
1491
d62177e9 1492 if (strequal(key + 12, "signal.pdeath")) {
258f8051
CB		 1493 int sig_n;
1494
1495 sig_n = sig_parse(value);
1496 if (sig_n < 0)
cb5f3df2 1497 return ret_errno(EINVAL);
258f8051
CB		 1498
1499 lxc_conf->monitor_signal_pdeath = sig_n;
1500 return 0;
1501 }
1502
cb5f3df2 1503 return ret_errno(EINVAL);
258f8051
CB		 1504}
1505
713046e3 1506static int set_config_group(const char *key, const char *value,
c7e27aaf 1507 struct lxc_conf *lxc_conf, void *data)
ee1e7aa0 1508{
15436995
CB		 1509 __do_free char *groups = NULL;
1510 char *token;
ee1e7aa0 1511
663e9916 1512 if (lxc_config_value_empty(value))
ee1e7aa0
SG		 1513 return lxc_clear_groups(lxc_conf);
1514
1515 groups = strdup(value);
25a908b8 1516 if (!groups)
15436995 1517 return ret_errno(ENOMEM);
ee1e7aa0 1518
25a908b8
CB		 1519 /* In case several groups are specified in a single line split these
1520 * groups in a single element for the list.
504a2217 1521 */
62dd965e 1522 lxc_iterate_parts(token, groups, " \t") {
15436995
CB		 1523 __do_free struct lxc_list *grouplist = NULL;
1524
642751cc 1525 grouplist = lxc_list_new();
15436995
CB		 1526 if (!grouplist)
1527 return ret_errno(ENOMEM);
ee1e7aa0
SG		 1528
1529 grouplist->elem = strdup(token);
15436995
CB		 1530 if (!grouplist->elem)
1531 return ret_errno(ENOMEM);
ee1e7aa0 1532
15436995 1533 lxc_list_add_tail(&lxc_conf->groups, move_ptr(grouplist));
d028235d 1534 }
ee1e7aa0 1535
15436995 1536 return 0;
ee1e7aa0
SG		 1537}
1538
713046e3 1539static int set_config_environment(const char *key, const char *value,
c7e27aaf 1540 struct lxc_conf *lxc_conf, void *data)
7c661726 1541{
c294a68d
CB		 1542 __do_free char *dup = NULL, *val = NULL;
1543 __do_free struct environment_entry *new_env = NULL;
1544 char *env_val;
7c661726 1545
663e9916 1546 if (lxc_config_value_empty(value))
ab799c0b
SG		 1547 return lxc_clear_environment(lxc_conf);
1548
c294a68d
CB		 1549 new_env = zalloc(sizeof(struct environment_entry));
1550 if (!new_env)
a6bf1128 1551 return ret_errno(ENOMEM);
7c661726 1552
c294a68d
CB		 1553 dup = strdup(value);
1554 if (!dup)
1555 return ret_errno(ENOMEM);
5eab47bc 1556
c294a68d
CB		 1557 env_val = strchr(dup, '=');
1558 if (!env_val) {
1559 env_val = getenv(dup);
5eab47bc 1560 } else {
c294a68d
CB		 1561 *env_val = '\0';
1562 env_val++;
5eab47bc 1563 }
c294a68d
CB		 1564 if (!env_val)
1565 return ret_errno(ENOENT);
7c661726 1566
c294a68d
CB		 1567 val = strdup(env_val);
1568 if (!val)
a6bf1128 1569 return ret_errno(ENOMEM);
7c661726 1570
c294a68d
CB		 1571 new_env->key = move_ptr(dup);
1572 new_env->val = move_ptr(val);
1573
1574 list_add_tail(&new_env->head, &lxc_conf->environment);
1575 move_ptr(new_env);
7c661726
MP		 1576
1577 return 0;
7c661726
MP		 1578}
1579
fe1c5887
CB		 1580static int set_config_tty_max(const char *key, const char *value,
1581 struct lxc_conf *lxc_conf, void *data)
b0a33c1e 1582{
885766f5
CB		 1583 int ret;
1584 unsigned int nbtty = 0;
1585
663e9916 1586 if (lxc_config_value_empty(value)) {
885766f5 1587 lxc_conf->ttys.max = 0;
fb12b12a 1588 return 0;
cb508ee8 1589 }
fb12b12a 1590
885766f5
CB		 1591 ret = lxc_safe_uint(value, &nbtty);
1592 if (ret < 0)
755d6532 1593 return ret;
885766f5
CB		 1594
1595 lxc_conf->ttys.max = nbtty;
47903908 1596
885766f5 1597 return 0;
b0a33c1e 1598}
1599
42e53c29 1600static int set_config_tty_dir(const char *key, const char *value,
c7e27aaf 1601 struct lxc_conf *lxc_conf, void *data)
7c6ef2a2 1602{
885766f5 1603 return set_config_string_item_max(&lxc_conf->ttys.dir, value,
504a2217 1604 NAME_MAX + 1);
7c6ef2a2
SH		 1605}
1606
953fe44f
CB		 1607static int set_config_apparmor_profile(const char *key, const char *value,
1608 struct lxc_conf *lxc_conf, void *data)
e075f5d9 1609{
8f899a4a 1610#if HAVE_APPARMOR
713046e3 1611 return set_config_string_item(&lxc_conf->lsm_aa_profile, value);
8f899a4a
CB		 1612#else
1613 return syserror_set(-EINVAL, "Built without AppArmor support");
1614#endif
fe4de9a6
DE		 1615}
1616
953fe44f
CB		 1617static int set_config_apparmor_allow_incomplete(const char *key,
1618 const char *value,
1619 struct lxc_conf *lxc_conf,
1620 void *data)
7aff4f43 1621{
8f899a4a 1622#if HAVE_APPARMOR
042f8711
CB		 1623 int ret;
1624
663e9916 1625 if (lxc_config_value_empty(value)) {
cccfa758 1626 lxc_conf->lsm_aa_allow_incomplete = 0;
a678e9fa 1627 return 0;
cccfa758 1628 }
a678e9fa 1629
042f8711
CB		 1630 ret = lxc_safe_uint(value, &lxc_conf->lsm_aa_allow_incomplete);
1631 if (ret)
1632 return ret;
7aff4f43 1633
25a908b8 1634 if (lxc_conf->lsm_aa_allow_incomplete > 1)
042f8711 1635 return ret_errno(EINVAL);
7aff4f43
SH		 1636
1637 return 0;
8f899a4a
CB		 1638#else
1639 return syserror_set(-EINVAL, "Built without AppArmor support");
1640#endif
7aff4f43
SH		 1641}
1642
1800f924
WB		 1643static int set_config_apparmor_allow_nesting(const char *key,
1644 const char *value,
1645 struct lxc_conf *lxc_conf,
1646 void *data)
1647{
8f899a4a 1648#if HAVE_APPARMOR
55a76891
CB		 1649 int ret;
1650
1800f924
WB		 1651 if (lxc_config_value_empty(value))
1652 return clr_config_apparmor_allow_nesting(key, lxc_conf, NULL);
1653
55a76891
CB		 1654 ret = lxc_safe_uint(value, &lxc_conf->lsm_aa_allow_nesting);
1655 if (ret)
1656 return ret;
1800f924
WB		 1657
1658 if (lxc_conf->lsm_aa_allow_nesting > 1)
55a76891 1659 return ret_errno(EINVAL);
1800f924
WB		 1660
1661 return 0;
8f899a4a
CB		 1662#else
1663 return syserror_set(-EINVAL, "Built without AppArmor support");
1664#endif
1800f924
WB		 1665}
1666
1667static int set_config_apparmor_raw(const char *key,
1668 const char *value,
1669 struct lxc_conf *lxc_conf,
1670 void *data)
1671{
8f899a4a 1672#if HAVE_APPARMOR
7f44fda1
CB		 1673 __do_free char *elem = NULL;
1674 __do_free struct lxc_list *list = NULL;
1800f924
WB		 1675
1676 if (lxc_config_value_empty(value))
1677 return lxc_clear_apparmor_raw(lxc_conf);
1678
642751cc 1679 list = lxc_list_new();
7f44fda1
CB		 1680 if (!list)
1681 return ret_errno(ENOMEM);
1800f924
WB		 1682
1683 elem = strdup(value);
7f44fda1
CB		 1684 if (!elem)
1685 return ret_errno(ENOMEM);
1800f924 1686
7f44fda1
CB		 1687 list->elem = move_ptr(elem);
1688 lxc_list_add_tail(&lxc_conf->lsm_aa_raw, move_ptr(list));
1800f924
WB		 1689
1690 return 0;
8f899a4a
CB		 1691#else
1692 return syserror_set(-EINVAL, "Built without AppArmor support");
1693#endif
1800f924
WB		 1694}
1695
953fe44f
CB		 1696static int set_config_selinux_context(const char *key, const char *value,
1697 struct lxc_conf *lxc_conf, void *data)
fe4de9a6 1698{
d6df2b8f 1699#if HAVE_SELINUX
713046e3 1700 return set_config_string_item(&lxc_conf->lsm_se_context, value);
d6df2b8f
CB		 1701#else
1702 return syserror_set(-EINVAL, "Built without SELinux support");
1703#endif
e075f5d9 1704}
e075f5d9 1705
4fef78bc
MB		 1706static int set_config_selinux_context_keyring(const char *key, const char *value,
1707 struct lxc_conf *lxc_conf, void *data)
1708{
d6df2b8f 1709#if HAVE_SELINUX
4fef78bc 1710 return set_config_string_item(&lxc_conf->lsm_se_keyring_context, value);
d6df2b8f
CB		 1711#else
1712 return syserror_set(-EINVAL, "Built without SELinux support");
1713#endif
4fef78bc
MB		 1714}
1715
8f818a84
MB		 1716static int set_config_keyring_session(const char *key, const char *value,
1717 struct lxc_conf *lxc_conf, void *data)
1718{
1719 return set_config_bool_item(&lxc_conf->keyring_disable_session, value, false);
1720}
1721
46cc906d 1722static int set_config_log_file(const char *key, const char *value,
c7e27aaf 1723 struct lxc_conf *c, void *data)
4a85ce2a 1724{
6d03d92a
DE		 1725 int ret;
1726
663e9916 1727 if (lxc_config_value_empty(value)) {
34f3b30a 1728 free_disarm(c->logfile);
0d601acb
CB		 1729 return 0;
1730 }
1731
34f3b30a
CB		 1732 /*
1733 * Store these values in the lxc_conf, and then try to set for actual
504a2217
CB		 1734 * current logging.
1735 */
713046e3 1736 ret = set_config_path_item(&c->logfile, value);
6d03d92a 1737 if (ret == 0)
858377e4 1738 ret = lxc_log_set_file(&c->logfd, c->logfile);
25a908b8 1739
6d03d92a 1740 return ret;
4a85ce2a
SH		 1741}
1742
46cc906d 1743static int set_config_log_level(const char *key, const char *value,
c7e27aaf 1744 struct lxc_conf *lxc_conf, void *data)
4a85ce2a 1745{
9ea87d5d
SH		 1746 int newlevel;
1747
663e9916 1748 if (lxc_config_value_empty(value)) {
4b73005c 1749 lxc_conf->loglevel = LXC_LOG_LEVEL_NOTSET;
4a85ce2a 1750 return 0;
575b9745 1751 }
4a85ce2a 1752
a56e2df9 1753 if (value[0] >= '0' && value[0] <= '9') {
806244c6
CB		 1754 int ret;
1755
1756 ret = lxc_safe_int(value, &newlevel);
1757 if (ret)
1758 return ret_errno(EINVAL);
a56e2df9 1759 } else {
9ea87d5d 1760 newlevel = lxc_log_priority_to_int(value);
a56e2df9 1761 }
575b9745 1762
806244c6
CB		 1763 /*
1764 * Store these values in the lxc_conf, and then try to set for actual
575b9745
CB		 1765 * current logging.
1766 */
b40a606e 1767 lxc_conf->loglevel = newlevel;
47903908 1768
858377e4 1769 return lxc_log_set_level(&lxc_conf->loglevel, newlevel);
4a85ce2a
SH		 1770}
1771
713046e3 1772static int set_config_autodev(const char *key, const char *value,
c7e27aaf 1773 struct lxc_conf *lxc_conf, void *data)
c6883f38 1774{
0c48b874
CB		 1775 int ret;
1776
663e9916 1777 if (lxc_config_value_empty(value)) {
1045031e 1778 lxc_conf->autodev = 0;
180abbc0 1779 return 0;
1045031e 1780 }
180abbc0 1781
0c48b874
CB		 1782 ret = lxc_safe_uint(value, &lxc_conf->autodev);
1783 if (ret)
1784 return ret_errno(EINVAL);
c6883f38 1785
25a908b8 1786 if (lxc_conf->autodev > 1)
0c48b874 1787 return ret_errno(EINVAL);
c6883f38
SH		 1788
1789 return 0;
1790}
1791
63012bdd
CK		 1792static int set_config_autodev_tmpfs_size(const char *key, const char *value,
1793 struct lxc_conf *lxc_conf, void *data)
1794{
1795 if (lxc_config_value_empty(value)) {
1796 lxc_conf->autodevtmpfssize = 500000;
1797 return 0;
1798 }
1799
1800 if (lxc_safe_int(value, &lxc_conf->autodevtmpfssize) < 0)
1801 lxc_conf->autodevtmpfssize = 500000;
1802
1803 return 0;
1804}
1805
55c84efc 1806static int set_config_signal_halt(const char *key, const char *value,
c7e27aaf 1807 struct lxc_conf *lxc_conf, void *data)
f0f1d8c0 1808{
62a085fb 1809 int sig_n;
f0f1d8c0 1810
663e9916 1811 if (lxc_config_value_empty(value)) {
c1a64603 1812 lxc_conf->haltsignal = 0;
955912f0 1813 return 0;
c1a64603 1814 }
955912f0 1815
62a085fb 1816 sig_n = sig_parse(value);
f0f1d8c0 1817 if (sig_n < 0)
d12fabf8 1818 return ret_errno(EINVAL);
25a908b8 1819
f0f1d8c0
DE		 1820 lxc_conf->haltsignal = sig_n;
1821
1822 return 0;
1823}
1824
55c84efc 1825static int set_config_signal_reboot(const char *key, const char *value,
c7e27aaf 1826 struct lxc_conf *lxc_conf, void *data)
dd267776 1827{
9d7e7587 1828 int sig_n;
dd267776 1829
663e9916 1830 if (lxc_config_value_empty(value)) {
18fcee44 1831 lxc_conf->rebootsignal = 0;
9d7e7587 1832 return 0;
18fcee44 1833 }
9d7e7587
CB		 1834
1835 sig_n = sig_parse(value);
dd267776 1836 if (sig_n < 0)
7d6b1a20 1837 return ret_errno(EINVAL);
25a908b8 1838
dd267776
BP		 1839 lxc_conf->rebootsignal = sig_n;
1840
1841 return 0;
1842}
1843
55c84efc 1844static int set_config_signal_stop(const char *key, const char *value,
c7e27aaf 1845 struct lxc_conf *lxc_conf, void *data)
a84b9932 1846{
6ca6aedd 1847 int sig_n;
a84b9932 1848
663e9916 1849 if (lxc_config_value_empty(value)) {
4100d1a7 1850 lxc_conf->stopsignal = 0;
6ca6aedd 1851 return 0;
4100d1a7 1852 }
6ca6aedd
CB		 1853
1854 sig_n = sig_parse(value);
a84b9932 1855 if (sig_n < 0)
c4d9b159 1856 return ret_errno(EINVAL);
25a908b8 1857
a84b9932
AV		 1858 lxc_conf->stopsignal = sig_n;
1859
1860 return 0;
1861}
1862
54860ed0
CB		 1863static int __set_config_cgroup_controller(const char *key, const char *value,
1864 struct lxc_conf *lxc_conf, int version)
576f946d 1865{
c9dbb8ed 1866 call_cleaner(free_lxc_cgroup) struct lxc_cgroup *new_cgroup = NULL;
54860ed0
CB		 1867 const char *subkey, *token;
1868 size_t token_len;
576f946d 1869
663e9916 1870 if (lxc_config_value_empty(value))
54860ed0
CB		 1871 return lxc_clear_cgroups(lxc_conf, key, version);
1872
1873 if (version == CGROUP2_SUPER_MAGIC) {
1874 token = "lxc.cgroup2.";
1875 token_len = 12;
1876 } else if (version == CGROUP_SUPER_MAGIC) {
1877 token = "lxc.cgroup.";
1878 token_len = 11;
1879 } else {
ee91fa06 1880 return ret_errno(EINVAL);
54860ed0 1881 }
576f946d 1882
1af3044f 1883 if (!strnequal(key, token, token_len))
ee91fa06 1884 return ret_errno(EINVAL);
a871ff6b 1885
54860ed0
CB		 1886 subkey = key + token_len;
1887 if (*subkey == '\0')
ee91fa06 1888 return ret_errno(EINVAL);
576f946d 1889
c9dbb8ed
CB		 1890 new_cgroup = zalloc(sizeof(*new_cgroup));
1891 if (!new_cgroup)
ee91fa06 1892 return ret_errno(ENOMEM);
576f946d 1893
c9dbb8ed
CB		 1894 new_cgroup->subsystem = strdup(subkey);
1895 if (!new_cgroup->subsystem)
ee91fa06 1896 return ret_errno(ENOMEM);
576f946d 1897
c9dbb8ed
CB		 1898 new_cgroup->value = strdup(value);
1899 if (!new_cgroup->value)
ee91fa06 1900 return ret_errno(ENOMEM);
bf83c5b9 1901
c9dbb8ed 1902 new_cgroup->version = version;
576f946d 1903
54860ed0 1904 if (version == CGROUP2_SUPER_MAGIC)
c9dbb8ed 1905 list_add_tail(&new_cgroup->head, &lxc_conf->cgroup2);
54860ed0 1906 else
c9dbb8ed
CB		 1907 list_add_tail(&new_cgroup->head, &lxc_conf->cgroup);
1908 move_ptr(new_cgroup);
576f946d 1909
1910 return 0;
1911}
1912
54860ed0
CB		 1913static int set_config_cgroup_controller(const char *key, const char *value,
1914 struct lxc_conf *lxc_conf, void *data)
1915{
1916 return __set_config_cgroup_controller(key, value, lxc_conf,
1917 CGROUP_SUPER_MAGIC);
1918}
1919
1920static int set_config_cgroup2_controller(const char *key, const char *value,
1921 struct lxc_conf *lxc_conf, void *data)
1922{
1923 return __set_config_cgroup_controller(key, value, lxc_conf,
1924 CGROUP2_SUPER_MAGIC);
1925}
1926
43654d34
CB		 1927static int set_config_cgroup_dir(const char *key, const char *value,
1928 struct lxc_conf *lxc_conf, void *data)
1929{
d62177e9 1930 if (!strequal(key, "lxc.cgroup.dir"))
c583072d
CB		 1931 return ret_errno(EINVAL);
1932
43654d34
CB		 1933 if (lxc_config_value_empty(value))
1934 return clr_config_cgroup_dir(key, lxc_conf, NULL);
1935
f63ef155 1936 if (abspath(value))
060aaa39 1937 return syserror_set(-EINVAL, "%s paths may not be absolute", key);
f63ef155 1938
0a48ee66 1939 if (dotdot(value))
060aaa39 1940 return syserror_set(-EINVAL, "%s paths may not walk upwards via \"../\"", key);
0a48ee66 1941
ee94a8b5 1942 return set_config_path_item(&lxc_conf->cgroup_meta.dir, value);
43654d34
CB		 1943}
1944
a900cbaf
WB		 1945static int set_config_cgroup_monitor_dir(const char *key, const char *value,
1946 struct lxc_conf *lxc_conf, void *data)
1947{
1948 if (lxc_config_value_empty(value))
1949 return clr_config_cgroup_monitor_dir(key, lxc_conf, NULL);
1950
f63ef155 1951 if (abspath(value))
060aaa39 1952 return syserror_set(-EINVAL, "%s paths may not be absolute", key);
f63ef155 1953
0a48ee66 1954 if (dotdot(value))
060aaa39 1955 return syserror_set(-EINVAL, "%s paths may not walk upwards via \"../\"", key);
0a48ee66 1956
ee94a8b5 1957 return set_config_path_item(&lxc_conf->cgroup_meta.monitor_dir, value);
a900cbaf
WB		 1958}
1959
7696c1f9
RJ		 1960static int set_config_cgroup_monitor_pivot_dir(const char *key, const char *value,
1961 struct lxc_conf *lxc_conf, void *data)
1962{
1963 if (lxc_config_value_empty(value))
1964 return clr_config_cgroup_monitor_pivot_dir(key, lxc_conf, NULL);
1965
f63ef155 1966 if (abspath(value))
060aaa39 1967 return syserror_set(-EINVAL, "%s paths may not be absolute", key);
f63ef155 1968
0a48ee66 1969 if (dotdot(value))
060aaa39 1970 return syserror_set(-EINVAL, "%s paths may not walk upwards via \"../\"", key);
0a48ee66 1971
ee94a8b5 1972 return set_config_path_item(&lxc_conf->cgroup_meta.monitor_pivot_dir, value);
7696c1f9
RJ		 1973}
1974
a900cbaf
WB		 1975static int set_config_cgroup_container_dir(const char *key, const char *value,
1976 struct lxc_conf *lxc_conf,
1977 void *data)
1978{
1979 if (lxc_config_value_empty(value))
1980 return clr_config_cgroup_container_dir(key, lxc_conf, NULL);
1981
f63ef155 1982 if (abspath(value))
060aaa39 1983 return syserror_set(-EINVAL, "%s paths may not be absolute", key);
f63ef155 1984
0a48ee66 1985 if (dotdot(value))
060aaa39 1986 return syserror_set(-EINVAL, "%s paths may not walk upwards via \"../\"", key);
0a48ee66 1987
ee94a8b5 1988 return set_config_path_item(&lxc_conf->cgroup_meta.container_dir, value);
a900cbaf
WB		 1989}
1990
1991static int set_config_cgroup_container_inner_dir(const char *key,
1992 const char *value,
1993 struct lxc_conf *lxc_conf,
1994 void *data)
1995{
1996 if (lxc_config_value_empty(value))
e93197e7 1997 return clr_config_cgroup_container_inner_dir(key, lxc_conf, NULL);
a900cbaf 1998
f63ef155 1999 if (abspath(value))
060aaa39 2000 return syserror_set(-EINVAL, "%s paths may not be absolute", key);
f63ef155 2001
d62177e9 2002 if (strchr(value, '/') || strequal(value, ".") || strequal(value, ".."))
e93197e7 2003 return log_error_errno(-EINVAL, EINVAL, "lxc.cgroup.dir.container.inner must be a single directory name");
a900cbaf 2004
e93197e7 2005 return set_config_string_item(&lxc_conf->cgroup_meta.namespace_dir, value);
a900cbaf
WB		 2006}
2007
9caee129
CB		 2008static int set_config_cgroup_relative(const char *key, const char *value,
2009 struct lxc_conf *lxc_conf, void *data)
76f0e2e7
CB		 2010{
2011 unsigned int converted;
2012 int ret;
2013
2014 if (lxc_config_value_empty(value))
9caee129 2015 return clr_config_cgroup_relative(key, lxc_conf, NULL);
76f0e2e7
CB		 2016
2017 ret = lxc_safe_uint(value, &converted);
c521771a
CB		 2018 if (ret)
2019 return ret;
76f0e2e7
CB		 2020
2021 if (converted == 1) {
9caee129 2022 lxc_conf->cgroup_meta.relative = true;
76f0e2e7
CB		 2023 return 0;
2024 }
2025
2026 if (converted == 0) {
9caee129 2027 lxc_conf->cgroup_meta.relative = false;
76f0e2e7
CB		 2028 return 0;
2029 }
2030
c521771a 2031 return ret_errno(EINVAL);
76f0e2e7
CB		 2032}
2033
f7662514
CB		 2034static bool parse_limit_value(const char **value, rlim_t *res)
2035{
2036 char *endptr = NULL;
2037
1af3044f 2038 if (strnequal(*value, "unlimited", STRLITERALLEN("unlimited"))) {
f7662514
CB		 2039 *res = RLIM_INFINITY;
2040 *value += STRLITERALLEN("unlimited");
2041 return true;
2042 }
2043
2044 errno = 0;
2045 *res = strtoull(*value, &endptr, 10);
2046 if (errno || !endptr)
2047 return false;
2048
2049 *value = endptr;
2050
2051 return true;
2052}
2053
240d4b74 2054static int set_config_prlimit(const char *key, const char *value,
c7e27aaf 2055 struct lxc_conf *lxc_conf, void *data)
c6d09e15 2056{
223797c3 2057 call_cleaner(free_lxc_limit) struct lxc_limit *new_lim = NULL;
c6d09e15 2058 struct rlimit limit;
71460831 2059 rlim_t limit_value;
223797c3 2060 struct lxc_limit *lim;
c6d09e15 2061
663e9916 2062 if (lxc_config_value_empty(value))
c6d09e15
WB		 2063 return lxc_clear_limits(lxc_conf, key);
2064
1af3044f 2065 if (!strnequal(key, "lxc.prlimit.", STRLITERALLEN("lxc.prlimit.")))
8fa831e0 2066 return ret_errno(EINVAL);
c6d09e15 2067
6333c915 2068 key += STRLITERALLEN("lxc.prlimit.");
c6d09e15
WB		 2069
2070 /* soft limit comes first in the value */
2071 if (!parse_limit_value(&value, &limit_value))
8fa831e0 2072 return ret_errno(EINVAL);
47903908 2073
c6d09e15
WB		 2074 limit.rlim_cur = limit_value;
2075
2076 /* skip spaces and a colon */
2077 while (isspace(*value))
2078 ++value;
504a2217 2079
c6d09e15
WB		 2080 if (*value == ':')
2081 ++value;
2082 else if (*value) /* any other character is an error here */
8fa831e0 2083 return ret_errno(EINVAL);
504a2217 2084
c6d09e15
WB		 2085 while (isspace(*value))
2086 ++value;
2087
2088 /* optional hard limit */
2089 if (*value) {
2090 if (!parse_limit_value(&value, &limit_value))
8fa831e0 2091 return ret_errno(EINVAL);
47903908 2092
c6d09e15 2093 limit.rlim_max = limit_value;
504a2217 2094
c6d09e15
WB		 2095 /* check for trailing garbage */
2096 while (isspace(*value))
2097 ++value;
504a2217 2098
c6d09e15 2099 if (*value)
8fa831e0 2100 return ret_errno(EINVAL);
c6d09e15
WB		 2101 } else {
2102 /* a single value sets both hard and soft limit */
2103 limit.rlim_max = limit.rlim_cur;
2104 }
2105
2106 /* find existing list element */
223797c3
CB		 2107 list_for_each_entry(lim, &lxc_conf->limits, head) {
2108 if (!strequal(key, lim->resource))
631d2715
CB		 2109 continue;
2110
223797c3 2111 lim->limit = limit;
631d2715 2112 return 0;
c6d09e15
WB		 2113 }
2114
223797c3
CB		 2115 new_lim = zalloc(sizeof(*new_lim));
2116 if (!new_lim)
8fa831e0 2117 return ret_errno(ENOMEM);
c6d09e15 2118
223797c3
CB		 2119 new_lim->resource = strdup(key);
2120 if (!new_lim->resource)
8fa831e0 2121 return ret_errno(ENOMEM);
c6d09e15 2122
223797c3
CB		 2123 new_lim->limit = limit;
2124 list_add_tail(&new_lim->head, &lxc_conf->limits);
2125 move_ptr(new_lim);
c6d09e15
WB		 2126
2127 return 0;
c6d09e15
WB		 2128}
2129
7edd0540
L		 2130static int set_config_sysctl(const char *key, const char *value,
2131 struct lxc_conf *lxc_conf, void *data)
2132{
f10c80d2 2133 call_cleaner(free_lxc_sysctl) struct lxc_sysctl *sysctl_elem = NULL;
ba9f9347 2134 struct lxc_sysctl *sysctl, *nsysctl;
7edd0540
L		 2135
2136 if (lxc_config_value_empty(value))
e409b214 2137 return clr_config_sysctl(key, lxc_conf, NULL);
7edd0540 2138
1af3044f 2139 if (!strnequal(key, "lxc.sysctl.", STRLITERALLEN("lxc.sysctl.")))
b28be01f 2140 return ret_errno(EINVAL);
7edd0540 2141
6333c915 2142 key += STRLITERALLEN("lxc.sysctl.");
b5fdc164 2143 if (is_empty_string(key))
b28be01f 2144 return ret_errno(EINVAL);
7edd0540
L		 2145
2146 /* find existing list element */
ba9f9347 2147 list_for_each_entry_safe(sysctl, nsysctl, &lxc_conf->sysctls, head) {
f10c80d2
CB		 2148 __do_free char *replace_value = NULL;
2149
ba9f9347 2150 if (!strequal(key, sysctl->key))
e409b214
CB		 2151 continue;
2152
2153 replace_value = strdup(value);
2154 if (!replace_value)
f10c80d2 2155 return ret_errno(EINVAL);
e409b214 2156
ba9f9347
CB		 2157 free(sysctl->value);
2158 sysctl->value = move_ptr(replace_value);
47903908 2159
e409b214 2160 return 0;
7edd0540
L		 2161 }
2162
b5fdc164 2163 sysctl_elem = zalloc(sizeof(*sysctl_elem));
7edd0540 2164 if (!sysctl_elem)
f10c80d2 2165 return ret_errno(ENOMEM);
7edd0540
L		 2166
2167 sysctl_elem->key = strdup(key);
2168 if (!sysctl_elem->key)
f10c80d2 2169 return ret_errno(ENOMEM);
7edd0540
L		 2170
2171 sysctl_elem->value = strdup(value);
2172 if (!sysctl_elem->value)
f10c80d2 2173 return ret_errno(ENOMEM);
7edd0540 2174
ba9f9347
CB		 2175 list_add_tail(&sysctl_elem->head, &lxc_conf->sysctls);
2176 move_ptr(sysctl_elem);
7edd0540
L		 2177
2178 return 0;
7edd0540
L		 2179}
2180
61d7a733
YT		 2181static int set_config_proc(const char *key, const char *value,
2182 struct lxc_conf *lxc_conf, void *data)
2183{
91d04bf9 2184 call_cleaner(free_lxc_proc) struct lxc_proc *new_proc = NULL;
61d7a733 2185 const char *subkey;
61d7a733
YT		 2186
2187 if (lxc_config_value_empty(value))
2188 return clr_config_proc(key, lxc_conf, NULL);
2189
1af3044f 2190 if (!strnequal(key, "lxc.proc.", STRLITERALLEN("lxc.proc.")))
b28be01f 2191 return ret_errno(EINVAL);
61d7a733 2192
6333c915 2193 subkey = key + STRLITERALLEN("lxc.proc.");
61d7a733 2194 if (*subkey == '\0')
83332c24 2195 return ret_errno(EINVAL);
61d7a733 2196
91d04bf9
CB		 2197 new_proc = zalloc(sizeof(*new_proc));
2198 if (!new_proc)
83332c24 2199 return ret_errno(ENOMEM);
61d7a733 2200
91d04bf9
CB		 2201 new_proc->filename = strdup(subkey);
2202 if (!new_proc->filename)
83332c24 2203 return ret_errno(ENOMEM);
61d7a733 2204
91d04bf9
CB		 2205 new_proc->value = strdup(value);
2206 if (!new_proc->value)
83332c24 2207 return ret_errno(ENOMEM);
61d7a733 2208
91d04bf9
CB		 2209 list_add_tail(&new_proc->head, &lxc_conf->procs);
2210 move_ptr(new_proc);
61d7a733
YT		 2211
2212 return 0;
61d7a733
YT		 2213}
2214
5014ff2e 2215static int set_config_idmaps(const char *key, const char *value,
c7e27aaf 2216 struct lxc_conf *lxc_conf, void *data)
f6d3e3e4 2217{
5c856bcb 2218 __do_free struct id_map *idmap = NULL;
251d0d2a 2219 unsigned long hostid, nsid, range;
f6d3e3e4 2220 char type;
0b843d35 2221 int ret;
f6d3e3e4 2222
663e9916 2223 if (lxc_config_value_empty(value))
7d0eb87e
SH		 2224 return lxc_clear_idmaps(lxc_conf);
2225
642751cc 2226 idmap = zalloc(sizeof(*idmap));
f6d3e3e4 2227 if (!idmap)
5c856bcb 2228 return ret_errno(ENOMEM);
f6d3e3e4 2229
0b843d35 2230 ret = parse_idmaps(value, &type, &nsid, &hostid, &range);
5c856bcb
CB		 2231 if (ret < 0)
2232 return log_error_errno(-EINVAL, EINVAL, "Failed to parse id mappings");
34a7a4c6 2233
25a908b8 2234 INFO("Read uid map: type %c nsid %lu hostid %lu range %lu", type, nsid, hostid, range);
ac7725e7 2235 if (type == 'u')
f6d3e3e4 2236 idmap->idtype = ID_TYPE_UID;
ac7725e7 2237 else if (type == 'g')
f6d3e3e4
SH		 2238 idmap->idtype = ID_TYPE_GID;
2239 else
5c856bcb 2240 return ret_errno(EINVAL);
7e60c3f0 2241
f6d3e3e4
SH		 2242 idmap->hostid = hostid;
2243 idmap->nsid = nsid;
2244 idmap->range = range;
0589d744 2245 list_add_tail(&idmap->head, &lxc_conf->id_map);
46ad64ab
CB		 2246
2247 if (!lxc_conf->root_nsuid_map && idmap->idtype == ID_TYPE_UID)
2248 if (idmap->nsid == 0)
2249 lxc_conf->root_nsuid_map = idmap;
2250
4160c3a0 2251 if (!lxc_conf->root_nsgid_map && idmap->idtype == ID_TYPE_GID)
46ad64ab
CB		 2252 if (idmap->nsid == 0)
2253 lxc_conf->root_nsgid_map = idmap;
2254
5c856bcb 2255 move_ptr(idmap);
7e60c3f0 2256
f6d3e3e4 2257 return 0;
f6d3e3e4
SH		 2258}
2259
47148e96
CB		 2260static int set_config_mount_fstab(const char *key, const char *value,
2261 struct lxc_conf *lxc_conf, void *data)
d95db067 2262{
663e9916 2263 if (lxc_config_value_empty(value)) {
47148e96 2264 clr_config_mount_fstab(key, lxc_conf, NULL);
e9cda8ec 2265 return ret_errno(EINVAL);
46f3de30 2266 }
6f5685f0 2267
713046e3 2268 return set_config_path_item(&lxc_conf->fstab, value);
d95db067
DE		 2269}
2270
713046e3 2271static int set_config_mount_auto(const char *key, const char *value,
c7e27aaf 2272 struct lxc_conf *lxc_conf, void *data)
368bbc02 2273{
138079ee
CB		 2274 __do_free char *autos = NULL;
2275 char *token;
368bbc02 2276 int i;
504a2217
CB		 2277 static struct {
2278 const char *token;
2279 int mask;
2280 int flag;
2281 } allowed_auto_mounts[] = {
138079ee
CB		 2282 { "proc", LXC_AUTO_PROC_MASK, LXC_AUTO_PROC_MIXED },
2283 { "proc:mixed", LXC_AUTO_PROC_MASK, LXC_AUTO_PROC_MIXED },
2284 { "proc:rw", LXC_AUTO_PROC_MASK, LXC_AUTO_PROC_RW },
2285 { "sys", LXC_AUTO_SYS_MASK, LXC_AUTO_SYS_MIXED },
2286 { "sys:ro", LXC_AUTO_SYS_MASK, LXC_AUTO_SYS_RO },
2287 { "sys:mixed", LXC_AUTO_SYS_MASK, LXC_AUTO_SYS_MIXED },
2288 { "sys:rw", LXC_AUTO_SYS_MASK, LXC_AUTO_SYS_RW },
2289 { "cgroup", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_NOSPEC },
2290 { "cgroup:mixed", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_MIXED },
2291 { "cgroup:ro", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_RO },
2292 { "cgroup:rw", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_RW },
2293 { "cgroup:force", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_NOSPEC | LXC_AUTO_CGROUP_FORCE },
2294 { "cgroup:mixed:force", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_MIXED | LXC_AUTO_CGROUP_FORCE },
2295 { "cgroup:ro:force", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_RO | LXC_AUTO_CGROUP_FORCE },
2296 { "cgroup:rw:force", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_RW | LXC_AUTO_CGROUP_FORCE },
2297 { "cgroup-full", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_FULL_NOSPEC },
2298 { "cgroup-full:mixed", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_FULL_MIXED },
2299 { "cgroup-full:ro", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_FULL_RO },
2300 { "cgroup-full:rw", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_FULL_RW },
2301 { "cgroup-full:force", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_FULL_NOSPEC | LXC_AUTO_CGROUP_FORCE },
2302 { "cgroup-full:mixed:force", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_FULL_MIXED | LXC_AUTO_CGROUP_FORCE },
2303 { "cgroup-full:ro:force", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_FULL_RO | LXC_AUTO_CGROUP_FORCE },
2304 { "cgroup-full:rw:force", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_FULL_RW | LXC_AUTO_CGROUP_FORCE },
2305 { "shmounts:", LXC_AUTO_SHMOUNTS_MASK, LXC_AUTO_SHMOUNTS },
2306 /*
2307 * For adding anything that is just a single on/off, but has no
2308 * options: keep mask and flag identical and just define the
2309 * enum value as an unused bit so far
2310 */
2311 { NULL, 0, 0 }
504a2217 2312 };
368bbc02 2313
663e9916 2314 if (lxc_config_value_empty(value)) {
d9192f5d
SH		 2315 lxc_conf->auto_mounts = 0;
2316 return 0;
2317 }
368bbc02
CS		 2318
2319 autos = strdup(value);
25a908b8 2320 if (!autos)
138079ee 2321 return ret_errno(ENOMEM);
368bbc02 2322
62dd965e 2323 lxc_iterate_parts(token, autos, " \t") {
0d190408
LT		 2324 bool is_shmounts = false;
2325
368bbc02 2326 for (i = 0; allowed_auto_mounts[i].token; i++) {
d62177e9 2327 if (strequal(allowed_auto_mounts[i].token, token))
368bbc02 2328 break;
0d190408 2329
d62177e9 2330 if (strequal("shmounts:", allowed_auto_mounts[i].token) &&
1af3044f 2331 strnequal("shmounts:", token, STRLITERALLEN("shmounts:"))) {
0d190408
LT		 2332 is_shmounts = true;
2333 break;
2334 }
368bbc02
CS		 2335 }
2336
138079ee
CB		 2337 if (!allowed_auto_mounts[i].token)
2338 return log_error_errno(-EINVAL, EINVAL, "Invalid filesystem to automount \"%s\"", token);
368bbc02 2339
b06b8511 2340 lxc_conf->auto_mounts &= ~allowed_auto_mounts[i].mask;
368bbc02 2341 lxc_conf->auto_mounts |= allowed_auto_mounts[i].flag;
47903908 2342
0d190408 2343 if (is_shmounts) {
138079ee
CB		 2344 __do_free char *container_path = NULL, *host_path = NULL;
2345 char *val;
594426ca 2346
138079ee
CB		 2347 val = token + STRLITERALLEN("shmounts:");
2348 if (*val == '\0')
2349 return log_error_errno(-EINVAL, EINVAL, "Failed to copy shmounts host path");
2350
2351 host_path = strdup(val);
2352 if (!host_path)
2353 return log_error_errno(-EINVAL, EINVAL, "Failed to copy shmounts host path");
fd14fdb8 2354
138079ee
CB		 2355 val = strchr(host_path, ':');
2356 if (!val || *(val + 1) == '\0')
2357 val = "/dev/.lxc-mounts";
6437f1c1 2358 else
138079ee 2359 *val++ = '\0';
6437f1c1 2360
138079ee
CB		 2361 container_path = strdup(val);
2362 if(!container_path)
2363 return log_error_errno(-EINVAL, EINVAL, "Failed to copy shmounts container path");
fd14fdb8 2364
405b28a4 2365 free_disarm(lxc_conf->shmount.path_host);
138079ee 2366 lxc_conf->shmount.path_host = move_ptr(host_path);
405b28a4
CB		 2367
2368 free_disarm(lxc_conf->shmount.path_cont);
138079ee 2369 lxc_conf->shmount.path_cont = move_ptr(container_path);
0d190408 2370 }
d028235d 2371 }
368bbc02 2372
138079ee 2373 return 0;
368bbc02
CS		 2374}
2375
713046e3 2376static int set_config_mount(const char *key, const char *value,
c7e27aaf 2377 struct lxc_conf *lxc_conf, void *data)
e7938e9e 2378{
48c367c0
CB		 2379 __do_free char *mntelem = NULL;
2380 __do_free struct lxc_list *mntlist = NULL;
e7938e9e 2381
663e9916 2382 if (lxc_config_value_empty(value))
d9192f5d 2383 return lxc_clear_mount_entries(lxc_conf);
e7938e9e 2384
642751cc 2385 mntlist = lxc_list_new();
e7938e9e 2386 if (!mntlist)
48c367c0 2387 return ret_errno(ENOMEM);
e7938e9e
MN		 2388
2389 mntelem = strdup(value);
48c367c0
CB		 2390 if (!mntelem)
2391 return ret_errno(ENOMEM);
e7938e9e 2392
48c367c0
CB		 2393 mntlist->elem = move_ptr(mntelem);
2394 lxc_list_add_tail(&lxc_conf->mount_list, move_ptr(mntlist));
e7938e9e
MN		 2395
2396 return 0;
2397}
2398
0d190408
LT		 2399int add_elem_to_mount_list(const char *value, struct lxc_conf *lxc_conf) {
2400 return set_config_mount(NULL, value, lxc_conf, NULL);
2401}
2402
713046e3 2403static int set_config_cap_keep(const char *key, const char *value,
c7e27aaf 2404 struct lxc_conf *lxc_conf, void *data)
1fb86a7c 2405{
bd7c5371
CB		 2406 __do_free char *keepcaps = NULL;
2407 __do_free struct lxc_list *keeplist = NULL;
2408 char *token;
1fb86a7c 2409
663e9916 2410 if (lxc_config_value_empty(value))
7d0eb87e 2411 return lxc_clear_config_keepcaps(lxc_conf);
1fb86a7c
SH		 2412
2413 keepcaps = strdup(value);
25a908b8 2414 if (!keepcaps)
bd7c5371 2415 return ret_errno(ENOMEM);
1fb86a7c 2416
504a2217
CB		 2417 /* In case several capability keep is specified in a single line
2418 * split these caps in a single element for the list.
2419 */
62dd965e 2420 lxc_iterate_parts(token, keepcaps, " \t") {
d62177e9 2421 if (strequal(token, "none"))
7035407c
DE		 2422 lxc_clear_config_keepcaps(lxc_conf);
2423
642751cc 2424 keeplist = lxc_list_new();
25a908b8 2425 if (!keeplist)
bd7c5371 2426 return ret_errno(ENOMEM);
1fb86a7c
SH		 2427
2428 keeplist->elem = strdup(token);
bd7c5371
CB		 2429 if (!keeplist->elem)
2430 return ret_errno(ENOMEM);
1fb86a7c 2431
bd7c5371 2432 lxc_list_add_tail(&lxc_conf->keepcaps, move_ptr(keeplist));
d028235d 2433 }
1fb86a7c 2434
bd7c5371 2435 return 0;
1fb86a7c
SH		 2436}
2437
713046e3 2438static int set_config_cap_drop(const char *key, const char *value,
c7e27aaf 2439 struct lxc_conf *lxc_conf, void *data)
81810dd1 2440{
c5c4831c
CB		 2441 __do_free char *dropcaps = NULL;
2442 __do_free struct lxc_list *droplist = NULL;
2443 char *token;
81810dd1 2444
663e9916 2445 if (lxc_config_value_empty(value))
7d0eb87e 2446 return lxc_clear_config_caps(lxc_conf);
81810dd1
DL		 2447
2448 dropcaps = strdup(value);
25a908b8 2449 if (!dropcaps)
c5c4831c 2450 return ret_errno(ENOMEM);
81810dd1 2451
504a2217
CB		 2452 /* In case several capability drop is specified in a single line
2453 * split these caps in a single element for the list.
2454 */
62dd965e 2455 lxc_iterate_parts(token, dropcaps, " \t") {
642751cc 2456 droplist = lxc_list_new();
25a908b8 2457 if (!droplist)
c5c4831c 2458 return ret_errno(ENOMEM);
81810dd1
DL		 2459
2460 droplist->elem = strdup(token);
c5c4831c
CB		 2461 if (!droplist->elem)
2462 return ret_errno(ENOMEM);
81810dd1 2463
c5c4831c 2464 lxc_list_add_tail(&lxc_conf->caps, move_ptr(droplist));
d028235d 2465 }
81810dd1 2466
c5c4831c 2467 return 0;
81810dd1
DL		 2468}
2469
3aed4934
CB		 2470static int set_config_console_path(const char *key, const char *value,
2471 struct lxc_conf *lxc_conf, void *data)
28a4b0e5 2472{
713046e3 2473 return set_config_path_item(&lxc_conf->console.path, value);
28a4b0e5
DL		 2474}
2475
d91adfa6
CB		 2476static int set_config_console_rotate(const char *key, const char *value,
2477 struct lxc_conf *lxc_conf, void *data)
2478{
9a26e4af
CB		 2479 int ret;
2480
d91adfa6
CB		 2481 if (lxc_config_value_empty(value)) {
2482 lxc_conf->console.log_rotate = 0;
2483 return 0;
2484 }
2485
9a26e4af
CB		 2486 ret = lxc_safe_uint(value, &lxc_conf->console.log_rotate);
2487 if (ret)
2488 return ret_errno(EINVAL);
d91adfa6 2489
9a26e4af
CB		 2490 if (lxc_conf->console.log_rotate > 1)
2491 return log_error_errno(-EINVAL, EINVAL, "The \"lxc.console.rotate\" config key can only be set to 0 or 1");
d91adfa6
CB		 2492
2493 return 0;
2494}
2495
713046e3 2496static int set_config_console_logfile(const char *key, const char *value,
c7e27aaf 2497 struct lxc_conf *lxc_conf, void *data)
96f15ca1 2498{
713046e3 2499 return set_config_path_item(&lxc_conf->console.log_path, value);
96f15ca1
SH		 2500}
2501
28f3b1cd
CB		 2502static int set_config_console_buffer_size(const char *key, const char *value,
2503 struct lxc_conf *lxc_conf, void *data)
a04220de
CB		 2504{
2505 int ret;
4c5479d2 2506 long long int size;
28f3b1cd 2507 uint64_t buffer_size, pgsz;
a04220de
CB		 2508
2509 if (lxc_config_value_empty(value)) {
28f3b1cd 2510 lxc_conf->console.buffer_size = 0;
a04220de
CB		 2511 return 0;
2512 }
2513
2514 /* If the user specified "auto" the default log size is 2^17 = 128 Kib */
d62177e9 2515 if (strequal(value, "auto")) {
28f3b1cd 2516 lxc_conf->console.buffer_size = 1 << 17;
a04220de
CB		 2517 return 0;
2518 }
2519
2520 ret = parse_byte_size_string(value, &size);
3f5c01db
CB		 2521 if (ret)
2522 return ret;
a04220de
CB		 2523
2524 if (size < 0)
3f5c01db 2525 return ret_errno(EINVAL);
a04220de
CB		 2526
2527 /* must be at least a page size */
2528 pgsz = lxc_getpagesize();
2529 if ((uint64_t)size < pgsz) {
4c5479d2 2530 NOTICE("Requested ringbuffer size for the console is %lld but must be at least %" PRId64 " bytes. Setting ringbuffer size to %" PRId64 " bytes",
a04220de
CB		 2531 size, pgsz, pgsz);
2532 size = pgsz;
2533 }
2534
28f3b1cd
CB		 2535 buffer_size = lxc_find_next_power2((uint64_t)size);
2536 if (buffer_size == 0)
3f5c01db 2537 return ret_errno(EINVAL);
a04220de 2538
28f3b1cd 2539 if (buffer_size != size)
3f5c01db 2540 NOTICE("Passed size was not a power of 2. Rounding log size to next power of two: %" PRIu64 " bytes", buffer_size);
a04220de 2541
28f3b1cd 2542 lxc_conf->console.buffer_size = buffer_size;
47903908 2543
a04220de
CB		 2544 return 0;
2545}
2546
861813e5
CB		 2547static int set_config_console_size(const char *key, const char *value,
2548 struct lxc_conf *lxc_conf, void *data)
2549{
2550 int ret;
4c5479d2 2551 long long int size;
861813e5
CB		 2552 uint64_t log_size, pgsz;
2553
2554 if (lxc_config_value_empty(value)) {
2555 lxc_conf->console.log_size = 0;
2556 return 0;
2557 }
2558
2559 /* If the user specified "auto" the default log size is 2^17 = 128 Kib */
d62177e9 2560 if (strequal(value, "auto")) {
861813e5
CB		 2561 lxc_conf->console.log_size = 1 << 17;
2562 return 0;
2563 }
2564
2565 ret = parse_byte_size_string(value, &size);
a7ac0d1e
CB		 2566 if (ret)
2567 return ret_errno(EINVAL);
861813e5
CB		 2568
2569 if (size < 0)
a7ac0d1e 2570 return ret_errno(EINVAL);
861813e5
CB		 2571
2572 /* must be at least a page size */
2573 pgsz = lxc_getpagesize();
2574 if ((uint64_t)size < pgsz) {
4c5479d2 2575 NOTICE("Requested ringbuffer size for the console is %lld but must be at least %" PRId64 " bytes. Setting ringbuffer size to %" PRId64 " bytes",
861813e5
CB		 2576 size, pgsz, pgsz);
2577 size = pgsz;
2578 }
2579
2580 log_size = lxc_find_next_power2((uint64_t)size);
2581 if (log_size == 0)
a7ac0d1e 2582 return ret_errno(EINVAL);
861813e5
CB		 2583
2584 if (log_size != size)
a7ac0d1e 2585 NOTICE("Passed size was not a power of 2. Rounding log size to next power of two: %" PRIu64 " bytes", log_size);
861813e5
CB		 2586
2587 lxc_conf->console.log_size = log_size;
47903908 2588
861813e5
CB		 2589 return 0;
2590}
2591
5648fc19
CB		 2592/*
2593 * If we find a lxc.net.[i].hwaddr or lxc.network.hwaddr in the original config
2594 * file, we expand it in the unexpanded_config, so that after a save_config we
2595 * store the hwaddr for re-use.
2596 * This is only called when reading the config file, not when executing a
2597 * lxc.include.
2598 * 'x' and 'X' are substituted in-place.
2599 */
2600static void update_hwaddr(const char *line)
2601{
2602 char *p;
2603
2604 line += lxc_char_left_gc(line, strlen(line));
2605 if (line[0] == '#')
2606 return;
2607
2608 if (!lxc_config_net_is_hwaddr(line))
2609 return;
2610
2611 /* Let config_net_hwaddr raise the error. */
2612 p = strchr(line, '=');
2613 if (!p)
2614 return;
2615 p++;
2616
2617 while (isblank(*p))
2618 p++;
2619
2620 if (!*p)
2621 return;
2622
2623 rand_complete_hwaddr(p);
2624}
2625
6b0d5538 2626int append_unexp_config_line(const char *line, struct lxc_conf *conf)
f979ac15 2627{
62a821f1
CB		 2628 size_t linelen;
2629 size_t len = conf->unexpanded_len;
f979ac15 2630
e6744e9b
SH		 2631 update_hwaddr(line);
2632
62a821f1 2633 linelen = strlen(line);
6b0d5538 2634 while (conf->unexpanded_alloced <= len + linelen + 2) {
1161f50d
CB		 2635 char *tmp;
2636
2637 tmp = realloc(conf->unexpanded_config, conf->unexpanded_alloced + 1024);
6b0d5538 2638 if (!tmp)
1161f50d 2639 return ret_errno(EINVAL);
504a2217 2640
6b0d5538
SH		 2641 if (!conf->unexpanded_config)
2642 *tmp = '\0';
62a821f1 2643
6b0d5538
SH		 2644 conf->unexpanded_config = tmp;
2645 conf->unexpanded_alloced += 1024;
2646 }
efed99a4 2647
62a821f1 2648 memcpy(conf->unexpanded_config + conf->unexpanded_len, line, linelen);
6b0d5538 2649 conf->unexpanded_len += linelen;
62a821f1
CB		 2650 if (line[linelen - 1] != '\n')
2651 conf->unexpanded_config[conf->unexpanded_len++] = '\n';
2652 conf->unexpanded_config[conf->unexpanded_len] = '\0';
25a908b8 2653
f979ac15
SH		 2654 return 0;
2655}
2656
e1daebd9
SH		 2657static int do_includedir(const char *dirp, struct lxc_conf *lxc_conf)
2658{
4110345b 2659 __do_closedir DIR *dir = NULL;
74f96976 2660 struct dirent *direntp;
c1b2319b 2661 int len, ret;
e1daebd9
SH		 2662
2663 dir = opendir(dirp);
25a908b8 2664 if (!dir)
dc73e0f0 2665 return errno == ENOENT ? 0 : -errno;
e1daebd9 2666
74f96976 2667 while ((direntp = readdir(dir))) {
e1daebd9 2668 const char *fnam;
c1b2319b 2669 char path[PATH_MAX];
e1daebd9
SH		 2670
2671 fnam = direntp->d_name;
d62177e9 2672 if (strequal(fnam, "."))
e1daebd9
SH		 2673 continue;
2674
d62177e9 2675 if (strequal(fnam, ".."))
e1daebd9
SH		 2676 continue;
2677
2678 len = strlen(fnam);
1af3044f 2679 if (len < 6 || !strnequal(fnam + len - 5, ".conf", 5))
e1daebd9 2680 continue;
25a908b8 2681
3948c252
CB		 2682 len = strnprintf(path, sizeof(path), "%s/%s", dirp, fnam);
2683 if (len < 0)
c1b2319b 2684 return ret_errno(EIO);
e1daebd9
SH		 2685
2686 ret = lxc_config_read(path, lxc_conf, true);
2687 if (ret < 0)
c1b2319b 2688 return ret;
e1daebd9 2689 }
e1daebd9 2690
4110345b 2691 return 0;
e1daebd9
SH		 2692}
2693
973082f5 2694static int set_config_includefiles(const char *key, const char *value,
c7e27aaf 2695 struct lxc_conf *lxc_conf, void *data)
09ad6246 2696{
663e9916 2697 if (lxc_config_value_empty(value)) {
26471403 2698 clr_config_includefiles(key, lxc_conf, NULL);
616422f1 2699 return 0;
355c5701 2700 }
616422f1 2701
dc73e0f0 2702 if (value[strlen(value)-1] == '/' || is_dir(value))
e1daebd9
SH		 2703 return do_includedir(value, lxc_conf);
2704
6b0d5538 2705 return lxc_config_read(value, lxc_conf, true);
09ad6246
SH		 2706}
2707
7a96a068
CB		 2708static int set_config_rootfs_path(const char *key, const char *value,
2709 struct lxc_conf *lxc_conf, void *data)
c2cc9f0a 2710{
d8cf0289 2711 __do_free char *dup = NULL;
693dbdb9 2712 int ret;
d8cf0289 2713 char *tmp;
693dbdb9
CB		 2714 const char *container_path;
2715
2716 if (lxc_config_value_empty(value)) {
2717 free(lxc_conf->rootfs.path);
2718 lxc_conf->rootfs.path = NULL;
2719 return 0;
2720 }
2721
2722 dup = strdup(value);
2723 if (!dup)
d8cf0289 2724 return ret_errno(ENOMEM);
693dbdb9
CB		 2725
2726 /* Split <storage type>:<container path> into <storage type> and
2727 * <container path>. Set "rootfs.bdev_type" to <storage type> and
2728 * "rootfs.path" to <container path>.
2729 */
2730 tmp = strchr(dup, ':');
2731 if (tmp) {
2732 *tmp = '\0';
47903908 2733
693dbdb9 2734 ret = set_config_path_item(&lxc_conf->rootfs.bdev_type, dup);
d8cf0289
CB		 2735 if (ret < 0)
2736 return ret_errno(ENOMEM);
47903908 2737
693dbdb9
CB		 2738 tmp++;
2739 container_path = tmp;
2740 } else {
2741 container_path = value;
2742 }
2743
d8cf0289 2744 return set_config_path_item(&lxc_conf->rootfs.path, container_path);
c2cc9f0a 2745}
2746
6e54330c
CB		 2747static int set_config_rootfs_managed(const char *key, const char *value,
2748 struct lxc_conf *lxc_conf, void *data)
2749{
8f818a84 2750 return set_config_bool_item(&lxc_conf->rootfs.managed, value, true);
6e54330c
CB		 2751}
2752
713046e3 2753static int set_config_rootfs_mount(const char *key, const char *value,
c7e27aaf 2754 struct lxc_conf *lxc_conf, void *data)
23b7ea69 2755{
713046e3 2756 return set_config_path_item(&lxc_conf->rootfs.mount, value);
23b7ea69
DL		 2757}
2758
713046e3 2759static int set_config_rootfs_options(const char *key, const char *value,
c7e27aaf 2760 struct lxc_conf *lxc_conf, void *data)
a17b1e65 2761{
704cadd5 2762 __do_free char *dup = NULL, *raw_options = NULL;
3437f95c 2763 struct lxc_rootfs *rootfs = &lxc_conf->rootfs;
423374e9 2764 struct lxc_mount_options *mnt_opts = &rootfs->mnt_opts;
f9d29e1f 2765 int ret;
3437f95c 2766
c04f4221
CB		 2767 clr_config_rootfs_options(key, lxc_conf, data);
2768 if (lxc_config_value_empty(value))
2769 return 0;
2770
704cadd5
CB		 2771 ret = set_config_string_item(&raw_options, value);
2772 if (ret < 0)
2773 return ret_errno(ENOMEM);
2774
16fcdacc
CB		 2775 dup = strdup(value);
2776 if (!dup)
2777 return -ENOMEM;
2778
1b82d721 2779 ret = parse_lxc_mount_attrs(mnt_opts, dup);
16fcdacc
CB		 2780 if (ret < 0)
2781 return ret;
3437f95c 2782
704cadd5 2783 /* Make sure we're only valid LXC specific mount options. */
423374e9
CB		 2784 if (mnt_opts->create_dir || mnt_opts->create_file ||
2785 mnt_opts->optional || mnt_opts->relative)
10fe481d 2786 return syserror_set(-EINVAL, "Invalid LXC specific mount option for rootfs mount");
16fcdacc 2787
704cadd5
CB		 2788 ret = parse_mount_attrs(mnt_opts, dup);
2789 if (ret < 0)
2790 return ret_errno(EINVAL);
3437f95c 2791
e73af35b 2792 rootfs->mnt_opts.raw_options = move_ptr(raw_options);
3437f95c 2793 return 0;
a17b1e65
SG		 2794}
2795
b67771bc 2796static int set_config_uts_name(const char *key, const char *value,
c7e27aaf 2797 struct lxc_conf *lxc_conf, void *data)
c2cc9f0a 2798{
cde6d8b4 2799 __do_free struct utsname *utsname = NULL;
c2cc9f0a 2800
663e9916 2801 if (lxc_config_value_empty(value)) {
b67771bc 2802 clr_config_uts_name(key, lxc_conf, NULL);
1939e73d 2803 return 0;
00cd8039 2804 }
1939e73d 2805
642751cc 2806 utsname = zalloc(sizeof(*utsname));
25a908b8 2807 if (!utsname)
cde6d8b4 2808 return ret_errno(ENOMEM);
c2cc9f0a 2809
cde6d8b4
CB		 2810 if (strlen(value) >= sizeof(utsname->nodename))
2811 return ret_errno(EINVAL);
c2cc9f0a 2812
43f984ea 2813 (void)strlcpy(utsname->nodename, value, sizeof(utsname->nodename));
f10fad2f 2814 free(lxc_conf->utsname);
cde6d8b4 2815 lxc_conf->utsname = move_ptr(utsname);
c2cc9f0a 2816
2817 return 0;
2818}
2819
1d8d3676
CB		 2820static int set_config_namespace_clone(const char *key, const char *value,
2821 struct lxc_conf *lxc_conf, void *data)
2822{
7454047d
CB		 2823 __do_free char *ns = NULL;
2824 char *token;
1d8d3676 2825 int cloneflag = 0;
1d8d3676
CB		 2826
2827 if (lxc_config_value_empty(value))
2828 return clr_config_namespace_clone(key, lxc_conf, data);
2829
7454047d
CB		 2830 if (lxc_conf->ns_keep != 0)
2831 return log_error_errno(-EINVAL, EINVAL, "Cannot set both \"lxc.namespace.clone\" and \"lxc.namespace.keep\"");
8bc8c715 2832
1d8d3676
CB		 2833 ns = strdup(value);
2834 if (!ns)
7454047d 2835 return ret_errno(ENOMEM);
1d8d3676 2836
62dd965e 2837 lxc_iterate_parts(token, ns, " \t") {
1d8d3676
CB		 2838 token += lxc_char_left_gc(token, strlen(token));
2839 token[lxc_char_right_gc(token, strlen(token))] = '\0';
2840 cloneflag = lxc_namespace_2_cloneflag(token);
7454047d
CB		 2841 if (cloneflag < 0)
2842 return ret_errno(EINVAL);
1d8d3676
CB		 2843 lxc_conf->ns_clone |= cloneflag;
2844 }
1d8d3676
CB		 2845
2846 return 0;
2847}
2848
abeb5bba
CB		 2849static int set_config_namespace_keep(const char *key, const char *value,
2850 struct lxc_conf *lxc_conf, void *data)
2851{
6c90df0e
CB		 2852 __do_free char *ns = NULL;
2853 char *token;
abeb5bba 2854 int cloneflag = 0;
abeb5bba
CB		 2855
2856 if (lxc_config_value_empty(value))
2857 return clr_config_namespace_keep(key, lxc_conf, data);
2858
6c90df0e
CB		 2859 if (lxc_conf->ns_clone != 0)
2860 return log_error_errno(-EINVAL, EINVAL, "Cannot set both \"lxc.namespace.clone\" and \"lxc.namespace.keep\"");
8bc8c715 2861
abeb5bba
CB		 2862 ns = strdup(value);
2863 if (!ns)
6c90df0e 2864 return ret_errno(ENOMEM);
abeb5bba 2865
62dd965e 2866 lxc_iterate_parts(token, ns, " \t") {
abeb5bba
CB		 2867 token += lxc_char_left_gc(token, strlen(token));
2868 token[lxc_char_right_gc(token, strlen(token))] = '\0';
2869 cloneflag = lxc_namespace_2_cloneflag(token);
6c90df0e
CB		 2870 if (cloneflag < 0)
2871 return ret_errno(EINVAL);
abeb5bba
CB		 2872 lxc_conf->ns_keep |= cloneflag;
2873 }
abeb5bba
CB		 2874
2875 return 0;
2876}
2877
70fd7fc9
CB		 2878static int set_config_time_offset_boot(const char *key, const char *value,
2879 struct lxc_conf *lxc_conf, void *data)
2880{
2881 int ret;
2882 char *unit;
2883 int64_t offset = 0;
2884 char buf[STRLITERALLEN("ms") + 1];
2885
2886 if (lxc_config_value_empty(value))
2887 return clr_config_time_offset_boot(key, lxc_conf, data);
2888
2889 ret = lxc_safe_int64_residual(value, &offset, 10, buf, sizeof(buf));
2890 if (ret)
2891 return ret;
2892
70fd7fc9 2893 unit = lxc_trim_whitespace_in_place(buf);
d62177e9 2894 if (strequal(unit, "h")) {
07f89c1e 2895 if (!multiply_overflow(offset, 3600, &lxc_conf->timens.s_boot))
b9965fd7 2896 return ret_errno(EOVERFLOW);
d62177e9 2897 } else if (strequal(unit, "m")) {
07f89c1e 2898 if (!multiply_overflow(offset, 60, &lxc_conf->timens.s_boot))
b9965fd7 2899 return ret_errno(EOVERFLOW);
d62177e9 2900 } else if (strequal(unit, "s")) {
70fd7fc9 2901 lxc_conf->timens.s_boot = offset;
d62177e9 2902 } else if (strequal(unit, "ms")) {
07f89c1e 2903 if (!multiply_overflow(offset, 1000000, &lxc_conf->timens.ns_boot))
b9965fd7 2904 return ret_errno(EOVERFLOW);
d62177e9 2905 } else if (strequal(unit, "us")) {
07f89c1e 2906 if (!multiply_overflow(offset, 1000, &lxc_conf->timens.ns_boot))
b9965fd7 2907 return ret_errno(EOVERFLOW);
d62177e9 2908 } else if (strequal(unit, "ns")) {
70fd7fc9 2909 lxc_conf->timens.ns_boot = offset;
07f89c1e 2910 } else {
70fd7fc9 2911 return ret_errno(EINVAL);
07f89c1e 2912 }
70fd7fc9
CB		 2913
2914 return 0;
2915}
2916
2917static int set_config_time_offset_monotonic(const char *key, const char *value,
2918 struct lxc_conf *lxc_conf, void *data)
2919{
2920 int ret;
2921 char *unit;
2922 int64_t offset = 0;
2923 char buf[STRLITERALLEN("ms") + 1];
2924
2925 if (lxc_config_value_empty(value))
2926 return clr_config_time_offset_monotonic(key, lxc_conf, data);
2927
2928 ret = lxc_safe_int64_residual(value, &offset, 10, buf, sizeof(buf));
2929 if (ret)
2930 return ret;
2931
70fd7fc9 2932 unit = lxc_trim_whitespace_in_place(buf);
d62177e9 2933 if (strequal(unit, "h")) {
07f89c1e 2934 if (!multiply_overflow(offset, 3600, &lxc_conf->timens.s_monotonic))
8f204445 2935 return ret_errno(EOVERFLOW);
d62177e9 2936 } else if (strequal(unit, "m")) {
07f89c1e 2937 if (!multiply_overflow(offset, 60, &lxc_conf->timens.s_monotonic))
8f204445 2938 return ret_errno(EOVERFLOW);
d62177e9 2939 } else if (strequal(unit, "s")) {
70fd7fc9 2940 lxc_conf->timens.s_monotonic = offset;
d62177e9 2941 } else if (strequal(unit, "ms")) {
07f89c1e 2942 if (!multiply_overflow(offset, 1000000, &lxc_conf->timens.ns_monotonic))
8f204445 2943 return ret_errno(EOVERFLOW);
d62177e9 2944 } else if (strequal(unit, "us")) {
07f89c1e 2945 if (!multiply_overflow(offset, 1000, &lxc_conf->timens.ns_monotonic))
8f204445 2946 return ret_errno(EOVERFLOW);
d62177e9 2947 } else if (strequal(unit, "ns")) {
70fd7fc9 2948 lxc_conf->timens.ns_monotonic = offset;
07f89c1e 2949 } else {
70fd7fc9 2950 return ret_errno(EINVAL);
07f89c1e 2951 }
70fd7fc9
CB		 2952
2953 return 0;
2954}
2955
b074bbf1
CB		 2956static int set_config_namespace_share(const char *key, const char *value,
2957 struct lxc_conf *lxc_conf, void *data)
28d9e29e
CB		 2958{
2959 int ns_idx;
2960 const char *namespace;
2961
2962 if (lxc_config_value_empty(value))
b074bbf1 2963 return clr_config_namespace_share(key, lxc_conf, data);
28d9e29e 2964
6333c915 2965 namespace = key + STRLITERALLEN("lxc.namespace.share.");
057d2cae
CB		 2966 if (is_empty_string(namespace))
2967 return ret_errno(EINVAL);
2968
28d9e29e
CB		 2969 ns_idx = lxc_namespace_2_ns_idx(namespace);
2970 if (ns_idx < 0)
2971 return ns_idx;
2972
b074bbf1 2973 return set_config_string_item(&lxc_conf->ns_share[ns_idx], value);
28d9e29e
CB		 2974}
2975
6b0d5538
SH		 2976struct parse_line_conf {
2977 struct lxc_conf *conf;
2978 bool from_include;
2979};
4184c3e1 2980
7a7ff0c6 2981static int parse_line(char *buffer, void *data)
c2cc9f0a 2982{
2e373df3
CB		 2983 __do_free char *linep = NULL;
2984 char *dot, *key, *line, *value;
3b13691d
CB		 2985 bool empty_line;
2986 struct lxc_config_t *config;
2e373df3 2987 int ret;
3b13691d
CB		 2988 char *dup = buffer;
2989 struct parse_line_conf *plc = data;
c2cc9f0a 2990
d60ba568
CB		 2991 if (!plc->conf)
2992 return syserror_set(-EINVAL, "Missing config");
2993
3b13691d
CB		 2994 /* If there are newlines in the config file we should keep them. */
2995 empty_line = lxc_is_line_empty(dup);
2996 if (empty_line)
2997 dup = "\n";
c2cc9f0a 2998
25a908b8
CB		 2999 /* We have to dup the buffer otherwise, at the re-exec for reboot we
3000 * modified the original string on the stack by replacing '=' by '\0'
3001 * below.
91480a0f 3002 */
3b13691d 3003 linep = line = strdup(dup);
25a908b8 3004 if (!line)
2e373df3 3005 return ret_errno(ENOMEM);
91480a0f 3006
3b13691d
CB		 3007 if (!plc->from_include) {
3008 ret = append_unexp_config_line(line, plc->conf);
3009 if (ret < 0)
2e373df3 3010 return ret;
3b13691d
CB		 3011 }
3012
3013 if (empty_line)
2e373df3 3014 return 0;
6b0d5538 3015
b2718c72 3016 line += lxc_char_left_gc(line, strlen(line));
476d4cf1 3017
4184c3e1
SH		 3018 /* ignore comments */
3019 if (line[0] == '#')
2e373df3 3020 return 0;
476d4cf1 3021
6b0d5538 3022 /* martian option - don't add it to the config itself */
1af3044f 3023 if (!strnequal(line, "lxc.", 4))
2e373df3 3024 return 0;
c2cc9f0a 3025
3b13691d 3026 dot = strchr(line, '=');
2e373df3
CB		 3027 if (!dot)
3028 return log_error_errno(-EINVAL, EINVAL, "Invalid configuration line: %s", line);
a871ff6b 3029
c2cc9f0a 3030 *dot = '\0';
3031 value = dot + 1;
3032
b2718c72 3033 key = line;
3034 key[lxc_char_right_gc(key, strlen(key))] = '\0';
c2cc9f0a 3035
b2718c72 3036 value += lxc_char_left_gc(value, strlen(value));
3037 value[lxc_char_right_gc(value, strlen(value))] = '\0';
c2cc9f0a 3038
bd878dee 3039 if (*value == '\'' || *value == '\"') {
25a908b8
CB		 3040 size_t len;
3041
3042 len = strlen(value);
504a2217
CB		 3043 if (len > 1 && value[len - 1] == *value) {
3044 value[len - 1] = '\0';
bd878dee
SB		 3045 value++;
3046 }
3047 }
3048
300df83e 3049 config = lxc_get_config(key);
2e373df3 3050 return config->set(key, value, plc->conf, NULL);
c2cc9f0a 3051}
3052
d899f11b 3053static struct new_config_item *parse_new_conf_line(char *buffer)
3054{
2b4cdcdb
CB		 3055 __do_free char *k = NULL, *linep = NULL, *v = NULL;
3056 __do_free struct new_config_item *new = NULL;
d899f11b 3057 char *dup = buffer;
2b4cdcdb 3058 char *dot, *key, *line, *value;
d899f11b 3059
d60ba568
CB		 3060 if (is_empty_string(buffer))
3061 return log_error_errno(NULL, EINVAL, "Empty configuration line");
3062
d899f11b 3063 linep = line = strdup(dup);
3064 if (!line)
3065 return NULL;
3066
3067 line += lxc_char_left_gc(line, strlen(line));
3068
3069 /* martian option - don't add it to the config itself */
1af3044f 3070 if (!strnequal(line, "lxc.", 4))
2b4cdcdb 3071 return 0;
d899f11b 3072
d899f11b 3073 dot = strchr(line, '=');
2b4cdcdb
CB		 3074 if (!dot)
3075 return log_error_errno(NULL, EINVAL, "Invalid configuration line: %s", line);
d899f11b 3076
3077 *dot = '\0';
3078 value = dot + 1;
3079
3080 key = line;
3081 key[lxc_char_right_gc(key, strlen(key))] = '\0';
3082
3083 value += lxc_char_left_gc(value, strlen(value));
3084 value[lxc_char_right_gc(value, strlen(value))] = '\0';
3085
3086 if (*value == '\'' || *value == '\"') {
3087 size_t len;
3088
3089 len = strlen(value);
3090 if (len > 1 && value[len - 1] == *value) {
3091 value[len - 1] = '\0';
3092 value++;
3093 }
3094 }
3095
642751cc 3096 new = zalloc(sizeof(struct new_config_item));
d899f11b 3097 if (!new)
2b4cdcdb 3098 return NULL;
d899f11b 3099
2b4cdcdb
CB		 3100 k = strdup(key);
3101 if (!k)
3102 return NULL;
d899f11b 3103
2b4cdcdb
CB		 3104 v = strdup(value);
3105 if (!v)
3106 return NULL;
d899f11b 3107
2b4cdcdb
CB		 3108 new->key = move_ptr(k);
3109 new->val = move_ptr(v);
3110 return move_ptr(new);
d899f11b 3111}
3112
6b0d5538 3113int lxc_config_read(const char *file, struct lxc_conf *conf, bool from_include)
c2cc9f0a 3114{
d60ba568
CB		 3115 struct parse_line_conf plc;
3116
3117 if (!conf)
3118 return syserror_set(-EINVAL, "Missing config");
6b0d5538 3119
d60ba568
CB		 3120 plc.conf = conf;
3121 plc.from_include = from_include;
f979ac15 3122
25a908b8 3123 /* Catch only the top level config file name in the structure. */
504a2217 3124 if (!conf->rcfile)
76d0127f 3125 conf->rcfile = strdup(file);
f979ac15 3126
d60ba568 3127 return lxc_file_for_each_line_mmap(file, parse_line, &plc);
c2cc9f0a 3128}
62e46035 3129
504a2217 3130int lxc_config_define_add(struct lxc_list *defines, char *arg)
62e46035 3131{
bce0472a 3132 __do_free struct lxc_list *dent = NULL;
62e46035 3133
642751cc 3134 dent = lxc_list_new();
62e46035 3135 if (!dent)
bce0472a 3136 return ret_errno(ENOMEM);
62e46035 3137
d899f11b 3138 dent->elem = parse_new_conf_line(arg);
bce0472a
CB		 3139 if (!dent->elem)
3140 return ret_errno(ENOMEM);
d899f11b 3141
bce0472a 3142 lxc_list_add_tail(defines, move_ptr(dent));
47903908 3143
62e46035
CLG		 3144 return 0;
3145}
3146
eb0c9382 3147bool lxc_config_define_load(struct lxc_list *defines, struct lxc_container *c)
62e46035 3148{
eb0c9382 3149 struct lxc_list *it;
3150 bool bret = true;
62e46035
CLG		 3151
3152 lxc_list_for_each(it, defines) {
eb0c9382 3153 struct new_config_item *new_item = it->elem;
3154 bret = c->set_config_item(c, new_item->key, new_item->val);
3155 if (!bret)
62e46035
CLG		 3156 break;
3157 }
3158
e8694d9a 3159#ifndef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
eb0c9382 3160 lxc_config_define_free(defines);
e8694d9a 3161#endif /* !FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION */
47903908 3162
eb0c9382 3163 return bret;
3164}
3165
3166void lxc_config_define_free(struct lxc_list *defines)
3167{
3168 struct lxc_list *it, *next;
3169
9ebb03ad 3170 lxc_list_for_each_safe(it, defines, next) {
eb0c9382 3171 struct new_config_item *new_item = it->elem;
3172 free(new_item->key);
3173 free(new_item->val);
62e46035 3174 lxc_list_del(it);
1a46f853 3175 free(it->elem);
62e46035
CLG		 3176 free(it);
3177 }
62e46035 3178}
525f0002 3179
7c43fa56 3180int lxc_config_parse_arch(const char *arch, signed long *persona)
525f0002 3181{
5f2a6ec4 3182 static struct per_name {
525f0002
CS		 3183 char *name;
3184 unsigned long per;
bb8d8207 3185 } pername[] = {
c852678b
CB		 3186 { "arm", PER_LINUX32 },
3187 { "armel", PER_LINUX32 },
3188 { "armhf", PER_LINUX32 },
3189 { "armv7l", PER_LINUX32 },
3190 { "athlon", PER_LINUX32 },
3191 { "i386", PER_LINUX32 },
3192 { "i486", PER_LINUX32 },
3193 { "i586", PER_LINUX32 },
3194 { "i686", PER_LINUX32 },
3195 { "linux32", PER_LINUX32 },
3196 { "mips", PER_LINUX32 },
3197 { "mipsel", PER_LINUX32 },
3198 { "ppc", PER_LINUX32 },
3199 { "powerpc", PER_LINUX32 },
3200 { "x86", PER_LINUX32 },
cae2b16f 3201 { "aarch64", PER_LINUX },
c852678b
CB		 3202 { "amd64", PER_LINUX },
3203 { "arm64", PER_LINUX },
3204 { "linux64", PER_LINUX },
3205 { "mips64", PER_LINUX },
3206 { "mips64el", PER_LINUX },
3207 { "ppc64", PER_LINUX },
3208 { "ppc64el", PER_LINUX },
3209 { "ppc64le", PER_LINUX },
3210 { "powerpc64", PER_LINUX },
3211 { "s390x", PER_LINUX },
3212 { "x86_64", PER_LINUX },
525f0002 3213 };
525f0002 3214
7c43fa56
CB		 3215 for (int i = 0; i < ARRAY_SIZE(pername); i++) {
3216 if (!strequal(pername[i].name, arch))
3217 continue;
3218
3219 *persona = pername[i].per;
3220 return 0;
3221 }
525f0002 3222
7c43fa56 3223 return ret_errno(EINVAL);
525f0002 3224}
72d0e1cb 3225
d253a09f 3226int lxc_fill_elevated_privileges(char *flaglist, unsigned int *flags)
eb0c9382 3227{
d253a09f 3228 unsigned int flags_tmp = 0;
62dd965e 3229 char *token;
eb0c9382 3230 struct {
3231 const char *token;
3232 int flag;
3233 } all_privs[] = {
3234 { "CGROUP", LXC_ATTACH_MOVE_TO_CGROUP },
3235 { "CAP", LXC_ATTACH_DROP_CAPABILITIES },
3236 { "LSM", LXC_ATTACH_LSM_EXEC },
3237 { NULL, 0 }
3238 };
3239
3240 if (!flaglist) {
d253a09f
CB		 3241 /*
3242 * For the sake of backward compatibility, keep all privileges
3243 * if no specific privileges are specified.
eb0c9382 3244 */
d253a09f
CB		 3245 for (unsigned int i = 0; all_privs[i].token; i++)
3246 flags_tmp |= all_privs[i].flag;
eb0c9382 3247
d253a09f 3248 *flags = flags_tmp;
eb0c9382 3249 return 0;
3250 }
3251
62dd965e 3252 lxc_iterate_parts(token, flaglist, "|") {
d253a09f 3253 bool valid_token = false;
eb0c9382 3254
d253a09f
CB		 3255 for (unsigned int i = 0; all_privs[i].token; i++) {
3256 if (!strequal(all_privs[i].token, token))
3257 continue;
eb0c9382 3258
d253a09f
CB		 3259 valid_token = true;
3260 flags_tmp |= all_privs[i].flag;
3261 }
eb0c9382 3262
d253a09f
CB		 3263 if (!valid_token)
3264 return syserror_set(-EINVAL, "Invalid elevated privilege \"%s\" requested", token);
eb0c9382 3265 }
3266
d253a09f 3267 *flags = flags_tmp;
eb0c9382 3268 return 0;
3269}
3270
504a2217 3271/* Write out a configuration file. */
0e1a60b0 3272int write_config(int fd, const struct lxc_conf *conf)
72d0e1cb 3273{
6b0d5538 3274 int ret;
0e1a60b0 3275 size_t len = conf->unexpanded_len;
72d0e1cb 3276
0e1a60b0
CB		 3277 if (len == 0)
3278 return 0;
504a2217 3279
0e1a60b0 3280 ret = lxc_write_nointr(fd, conf->unexpanded_config, len);
f2c64408
CB		 3281 if (ret < 0)
3282 return log_error_errno(-errno, errno, "Failed to write configuration file");
0e1a60b0
CB		 3283
3284 return 0;
6b0d5538 3285}
f979ac15 3286
504a2217
CB		 3287bool do_append_unexp_config_line(struct lxc_conf *conf, const char *key,
3288 const char *v)
6b0d5538 3289{
0cacddda 3290 __do_free char *tmp = NULL;
6b0d5538 3291 int ret;
151d2da2 3292 size_t len;
4184c3e1 3293
151d2da2 3294 len = strlen(key) + strlen(v) + 4;
f01d0358 3295 tmp = must_realloc(NULL, len);
151d2da2 3296
663e9916 3297 if (lxc_config_value_empty(v))
3948c252 3298 ret = strnprintf(tmp, len, "%s =", key);
151d2da2 3299 else
3948c252
CB		 3300 ret = strnprintf(tmp, len, "%s = %s", key, v);
3301 if (ret < 0)
6b0d5538
SH		 3302 return false;
3303
3304 /* Save the line verbatim into unexpanded_conf */
3305 if (append_unexp_config_line(tmp, conf))
3306 return false;
3307
3308 return true;
3309}
3310
504a2217
CB		 3311void clear_unexp_config_line(struct lxc_conf *conf, const char *key,
3312 bool rm_subkeys)
6b0d5538 3313{
504a2217
CB		 3314 char *lend;
3315 char *lstart = conf->unexpanded_config;
6b0d5538
SH		 3316
3317 if (!conf->unexpanded_config)
3318 return;
504a2217 3319
6b0d5538
SH		 3320 while (*lstart) {
3321 lend = strchr(lstart, '\n');
3322 char v;
47903908 3323
6b0d5538
SH		 3324 if (!lend)
3325 lend = lstart + strlen(lstart);
3326 else
3327 lend++;
47903908 3328
1af3044f 3329 if (!strnequal(lstart, key, strlen(key))) {
6b0d5538
SH		 3330 lstart = lend;
3331 continue;
5f62730e 3332 }
47903908 3333
6b0d5538
SH		 3334 if (!rm_subkeys) {
3335 v = lstart[strlen(key)];
3336 if (!isspace(v) && v != '=') {
3337 lstart = lend;
3338 continue;
3339 }
5f62730e 3340 }
47903908 3341
6b0d5538 3342 conf->unexpanded_len -= (lend - lstart);
47903908 3343
6b0d5538
SH		 3344 if (*lend == '\0') {
3345 *lstart = '\0';
3346 return;
fd986e08 3347 }
47903908 3348
504a2217 3349 memmove(lstart, lend, strlen(lend) + 1);
fd986e08 3350 }
6b0d5538
SH		 3351}
3352
329b3625
CB		 3353bool clone_update_unexp_ovl_paths(struct lxc_conf *conf, const char *oldpath,
3354 const char *newpath, const char *oldname,
3355 const char *newname, const char *ovldir)
3356{
b063ba29
CB		 3357 __do_free char *newdir = NULL, *olddir = NULL;
3358 char *lstart = conf->unexpanded_config;
3359 const char *key = "lxc.mount.entry";
329b3625 3360 int ret;
f01d0358 3361 char *lend, *p, *q;
504a2217 3362 size_t newdirlen, olddirlen;
329b3625 3363
504a2217 3364 olddirlen = strlen(ovldir) + strlen(oldpath) + strlen(oldname) + 2;
f01d0358 3365 olddir = must_realloc(NULL, olddirlen + 1);
3948c252
CB		 3366 ret = strnprintf(olddir, olddirlen + 1, "%s=%s/%s", ovldir, oldpath, oldname);
3367 if (ret < 0)
329b3625 3368 return false;
504a2217
CB		 3369
3370 newdirlen = strlen(ovldir) + strlen(newpath) + strlen(newname) + 2;
f01d0358 3371 newdir = must_realloc(NULL, newdirlen + 1);
3948c252
CB		 3372 ret = strnprintf(newdir, newdirlen + 1, "%s=%s/%s", ovldir, newpath, newname);
3373 if (ret < 0)
329b3625 3374 return false;
504a2217 3375
329b3625
CB		 3376 if (!conf->unexpanded_config)
3377 return true;
504a2217 3378
329b3625
CB		 3379 while (*lstart) {
3380 lend = strchr(lstart, '\n');
3381 if (!lend)
3382 lend = lstart + strlen(lstart);
3383 else
3384 lend++;
504a2217 3385
1af3044f 3386 if (!strnequal(lstart, key, strlen(key)))
504a2217
CB		 3387 goto next;
3388
329b3625
CB		 3389 p = strchr(lstart + strlen(key), '=');
3390 if (!p)
504a2217 3391 goto next;
329b3625 3392 p++;
504a2217 3393
329b3625
CB		 3394 while (isblank(*p))
3395 p++;
504a2217 3396
329b3625 3397 if (p >= lend)
504a2217
CB		 3398 goto next;
3399
12e6ab5d
CB		 3400 /* Whenever a lxc.mount.entry entry is found in a line we check
3401 * if the substring "overlay" is present before doing any
3402 * further work. We check for "overlay" because substrings need
3403 * to have at least one space before them in a valid overlay
504a2217
CB		 3404 * lxc.mount.entry (/A B overlay). When the space before is
3405 * missing it is very likely that these substrings are part of a
3406 * path or something else. (Checking q >= lend ensures that we
3407 * only count matches in the current line.) */
12e6ab5d
CB		 3408 q = strstr(p, " overlay");
3409 if (!q || q >= lend)
504a2217
CB		 3410 goto next;
3411
329b3625 3412 if (!(q = strstr(p, olddir)) || (q >= lend))
504a2217 3413 goto next;
329b3625
CB		 3414
3415 /* replace the olddir with newdir */
3416 if (olddirlen >= newdirlen) {
3417 size_t diff = olddirlen - newdirlen;
3418 memcpy(q, newdir, newdirlen);
47903908 3419
329b3625
CB		 3420 if (olddirlen != newdirlen) {
3421 memmove(q + newdirlen, q + newdirlen + diff,
47903908 3422 strlen(q) - newdirlen - diff + 1);
329b3625
CB		 3423 lend -= diff;
3424 conf->unexpanded_len -= diff;
3425 }
3426 } else {
3427 char *new;
3428 size_t diff = newdirlen - olddirlen;
3429 size_t oldlen = conf->unexpanded_len;
3430 size_t newlen = oldlen + diff;
3431 size_t poffset = q - conf->unexpanded_config;
504a2217 3432
329b3625 3433 new = realloc(conf->unexpanded_config, newlen + 1);
25a908b8 3434 if (!new)
329b3625 3435 return false;
25a908b8 3436
329b3625
CB		 3437 conf->unexpanded_len = newlen;
3438 conf->unexpanded_alloced = newlen + 1;
3439 new[newlen - 1] = '\0';
3440 lend = new + (lend - conf->unexpanded_config);
47903908 3441
25a908b8 3442 /* Move over the remainder to make room for the newdir.
504a2217 3443 */
329b3625 3444 memmove(new + poffset + newdirlen,
47903908 3445 new + poffset + olddirlen,
3446 oldlen - poffset - olddirlen + 1);
329b3625 3447 conf->unexpanded_config = new;
47903908 3448
329b3625
CB		 3449 memcpy(new + poffset, newdir, newdirlen);
3450 lend += diff;
3451 }
47903908 3452
504a2217
CB		 3453 next:
3454 lstart = lend;
329b3625 3455 }
504a2217 3456
329b3625
CB		 3457 return true;
3458}
3459
67702c21 3460bool clone_update_unexp_hooks(struct lxc_conf *conf, const char *oldpath,
d546aa0e
CB		 3461 const char *newpath, const char *oldname,
3462 const char *newname)
6b0d5538 3463{
29e78cb9
CB		 3464 __do_free char *newdir = NULL, *olddir = NULL;
3465 char *lstart = conf->unexpanded_config;
3466 const char *key = "lxc.hook";
67702c21 3467 int ret;
f01d0358 3468 char *lend, *p;
504a2217 3469 size_t newdirlen, olddirlen;
67702c21 3470
504a2217 3471 olddirlen = strlen(oldpath) + strlen(oldname) + 1;
f01d0358 3472 olddir = must_realloc(NULL, olddirlen + 1);
3948c252
CB		 3473 ret = strnprintf(olddir, olddirlen + 1, "%s/%s", oldpath, oldname);
3474 if (ret < 0)
67702c21 3475 return false;
504a2217
CB		 3476
3477 newdirlen = strlen(newpath) + strlen(newname) + 1;
f01d0358 3478 newdir = must_realloc(NULL, newdirlen + 1);
3948c252
CB		 3479 ret = strnprintf(newdir, newdirlen + 1, "%s/%s", newpath, newname);
3480 if (ret < 0)
67702c21 3481 return false;
25a908b8 3482
67702c21
SH		 3483 if (!conf->unexpanded_config)
3484 return true;
25a908b8 3485
67702c21
SH		 3486 while (*lstart) {
3487 lend = strchr(lstart, '\n');
3488 if (!lend)
3489 lend = lstart + strlen(lstart);
3490 else
3491 lend++;
504a2217 3492
1af3044f 3493 if (!strnequal(lstart, key, strlen(key)))
504a2217
CB		 3494 goto next;
3495
d546aa0e
CB		 3496 p = strchr(lstart + strlen(key), '=');
3497 if (!p)
504a2217 3498 goto next;
67702c21 3499 p++;
504a2217 3500
67702c21
SH		 3501 while (isblank(*p))
3502 p++;
504a2217
CB		 3503
3504 if (p >= lend)
3505 goto next;
3506
1af3044f 3507 if (!strnequal(p, olddir, strlen(olddir)))
504a2217
CB		 3508 goto next;
3509
67702c21
SH		 3510 /* replace the olddir with newdir */
3511 if (olddirlen >= newdirlen) {
3512 size_t diff = olddirlen - newdirlen;
3513 memcpy(p, newdir, newdirlen);
47903908 3514
67702c21 3515 if (olddirlen != newdirlen) {
d546aa0e 3516 memmove(p + newdirlen, p + newdirlen + diff,
47903908 3517 strlen(p) - newdirlen - diff + 1);
67702c21
SH		 3518 lend -= diff;
3519 conf->unexpanded_len -= diff;
3520 }
67702c21
SH		 3521 } else {
3522 char *new;
3523 size_t diff = newdirlen - olddirlen;
3524 size_t oldlen = conf->unexpanded_len;
3525 size_t newlen = oldlen + diff;
3526 size_t poffset = p - conf->unexpanded_config;
504a2217 3527
d546aa0e 3528 new = realloc(conf->unexpanded_config, newlen + 1);
25a908b8 3529 if (!new)
6b0d5538 3530 return false;
25a908b8 3531
67702c21 3532 conf->unexpanded_len = newlen;
d546aa0e
CB		 3533 conf->unexpanded_alloced = newlen + 1;
3534 new[newlen - 1] = '\0';
67702c21 3535 lend = new + (lend - conf->unexpanded_config);
47903908 3536
25a908b8 3537 /* Move over the remainder to make room for the newdir.
504a2217 3538 */
d546aa0e 3539 memmove(new + poffset + newdirlen,
47903908 3540 new + poffset + olddirlen,
3541 oldlen - poffset - olddirlen + 1);
67702c21 3542 conf->unexpanded_config = new;
47903908 3543
d546aa0e
CB		 3544 memcpy(new + poffset, newdir, newdirlen);
3545 lend += diff;
fd986e08 3546 }
47903908 3547
504a2217
CB		 3548 next:
3549 lstart = lend;
fd986e08 3550 }
504a2217 3551
6b0d5538
SH		 3552 return true;
3553}
3554
504a2217
CB		 3555#define DO(cmd) \
3556 { \
3557 if (!(cmd)) { \
3558 ERROR("Error writing to new config"); \
3559 return false; \
3560 } \
3561 }
6b0d5538 3562
25a908b8
CB		 3563/* This is called only from clone. We wish to update all hwaddrs in the
3564 * unexpanded config file. We can't/don't want to update any which come from
504a2217
CB		 3565 * lxc.includes (there shouldn't be any).
3566 * We can't just walk the c->lxc-conf->network list because that includes netifs
3567 * from the include files. So we update the ones which we find in the unexp
3568 * config file, then find the original macaddr in the conf->network, and update
3569 * that to the same value.
67702c21
SH		 3570 */
3571bool network_new_hwaddrs(struct lxc_conf *conf)
6b0d5538 3572{
504a2217 3573 char *lend, *p, *p2;
504a2217 3574 char *lstart = conf->unexpanded_config;
6b0d5538 3575
67702c21
SH		 3576 if (!conf->unexpanded_config)
3577 return true;
091045f8 3578
67702c21
SH		 3579 while (*lstart) {
3580 char newhwaddr[18], oldhwaddr[17];
87d0990c 3581 struct lxc_netdev *netdev;
091045f8 3582
67702c21
SH		 3583 lend = strchr(lstart, '\n');
3584 if (!lend)
3585 lend = lstart + strlen(lstart);
3586 else
3587 lend++;
091045f8 3588
3db41a6c 3589 if (!lxc_config_net_is_hwaddr(lstart)) {
67702c21
SH		 3590 lstart = lend;
3591 continue;
72d0e1cb 3592 }
091045f8 3593
4a787c27 3594 p = strchr(lstart, '=');
67702c21
SH		 3595 if (!p) {
3596 lstart = lend;
3597 continue;
72d0e1cb 3598 }
091045f8 3599
67702c21
SH		 3600 p++;
3601 while (isblank(*p))
3602 p++;
3603 if (!*p)
3604 return true;
091045f8 3605
67702c21
SH		 3606 p2 = p;
3607 while (*p2 && !isblank(*p2) && *p2 != '\n')
3608 p2++;
504a2217
CB		 3609
3610 if ((p2 - p) != 17) {
67702c21
SH		 3611 WARN("Bad hwaddr entry");
3612 lstart = lend;
3613 continue;
72d0e1cb 3614 }
091045f8 3615
67702c21 3616 memcpy(oldhwaddr, p, 17);
091045f8
CB		 3617
3618 if (!new_hwaddr(newhwaddr))
3619 return false;
3620
67702c21 3621 memcpy(p, newhwaddr, 17);
87d0990c
CB		 3622 list_for_each_entry(netdev, &conf->netdevs, head) {
3623 if (netdev->hwaddr && memcmp(oldhwaddr, netdev->hwaddr, 17) == 0)
3624 memcpy(netdev->hwaddr, newhwaddr, 17);
72d0e1cb 3625 }
67702c21
SH		 3626
3627 lstart = lend;
72d0e1cb 3628 }
091045f8 3629
6b0d5538 3630 return true;
72d0e1cb 3631}
8796becf 3632
713046e3 3633static int set_config_ephemeral(const char *key, const char *value,
c7e27aaf 3634 struct lxc_conf *lxc_conf, void *data)
8796becf 3635{
4486ea13
CB		 3636 int ret;
3637
663e9916 3638 if (lxc_config_value_empty(value)) {
3c6cf53a 3639 lxc_conf->ephemeral = 0;
78304622 3640 return 0;
3c6cf53a 3641 }
78304622 3642
4486ea13
CB		 3643 ret = lxc_safe_uint(value, &lxc_conf->ephemeral);
3644 if (ret < 0)
3645 return ret;
8796becf 3646
25a908b8 3647 if (lxc_conf->ephemeral > 1)
4486ea13 3648 return ret_errno(EINVAL);
8796becf
CB		 3649
3650 return 0;
3651}
3652
46cc906d 3653static int set_config_log_syslog(const char *key, const char *value,
c7e27aaf 3654 struct lxc_conf *lxc_conf, void *data)
64c57ea1 3655{
76d0127f 3656 int facility;
7ca56b84 3657
b8a0e944
CB		 3658 if (lxc_conf->syslog)
3659 free_disarm(lxc_conf->syslog);
ee10a69c 3660
663e9916 3661 if (lxc_config_value_empty(value))
7ca56b84
CB		 3662 return 0;
3663
76d0127f 3664 facility = lxc_syslog_priority_to_int(value);
25a908b8 3665 if (facility == -EINVAL)
b8a0e944 3666 return ret_errno(EINVAL);
64c57ea1 3667
76d0127f 3668 lxc_log_syslog(facility);
47903908 3669
713046e3 3670 return set_config_string_item(&lxc_conf->syslog, value);
64c57ea1 3671}
5a46f283 3672
713046e3 3673static int set_config_no_new_privs(const char *key, const char *value,
c7e27aaf 3674 struct lxc_conf *lxc_conf, void *data)
5a46f283 3675{
ad9a0d33 3676 int ret;
e8ec7c9e 3677 unsigned int v;
5a46f283 3678
663e9916 3679 if (lxc_config_value_empty(value)) {
cf3f8bf6 3680 lxc_conf->no_new_privs = false;
80926845 3681 return 0;
cf3f8bf6 3682 }
80926845 3683
ad9a0d33
CB		 3684 ret = lxc_safe_uint(value, &v);
3685 if (ret < 0)
3686 return ret;
e8ec7c9e 3687
25a908b8 3688 if (v > 1)
ad9a0d33 3689 return ret_errno(EINVAL);
e8ec7c9e 3690
5a46f283
CB		 3691 lxc_conf->no_new_privs = v ? true : false;
3692
3693 return 0;
3694}
7b992a3e
CB		 3695
3696/* Callbacks to get configuration items. */
6bede808 3697static int get_config_personality(const char *key, char *retv, int inlen,
cccd2219 3698 struct lxc_conf *c, void *data)
7b992a3e
CB		 3699{
3700 int fulllen = 0;
3701
3702 if (!retv)
3703 inlen = 0;
3704 else
3705 memset(retv, 0, inlen);
3706
7b992a3e
CB		 3707 int len = 0;
3708
6bede808 3709 switch (c->personality) {
7b992a3e
CB		 3710 case PER_LINUX32:
3711 strprint(retv, inlen, "i686");
3712 break;
3713 case PER_LINUX:
3714 strprint(retv, inlen, "x86_64");
3715 break;
3716 default:
3717 break;
3718 }
7b992a3e
CB		 3719
3720 return fulllen;
3721}
bdf91ab4 3722
232763d6
CB		 3723static int get_config_pty_max(const char *key, char *retv, int inlen,
3724 struct lxc_conf *c, void *data)
bdf91ab4 3725{
e528c735 3726 return lxc_get_conf_size_t(c, retv, inlen, c->pty_max);
bdf91ab4 3727}
5485782f 3728
fe1c5887
CB		 3729static int get_config_tty_max(const char *key, char *retv, int inlen,
3730 struct lxc_conf *c, void *data)
5485782f 3731{
885766f5 3732 return lxc_get_conf_size_t(c, retv, inlen, c->ttys.max);
5485782f 3733}
8015e018 3734
42e53c29 3735static int get_config_tty_dir(const char *key, char *retv, int inlen,
cccd2219 3736 struct lxc_conf *c, void *data)
8015e018 3737{
885766f5 3738 return lxc_get_conf_str(retv, inlen, c->ttys.dir);
8015e018 3739}
de1ede69 3740
953fe44f
CB		 3741static int get_config_apparmor_profile(const char *key, char *retv, int inlen,
3742 struct lxc_conf *c, void *data)
104c8e6c 3743{
8f899a4a 3744#if HAVE_APPARMOR
6bede808 3745 return lxc_get_conf_str(retv, inlen, c->lsm_aa_profile);
8f899a4a
CB		 3746#else
3747 return syserror_set(-EINVAL, "Built without AppArmor support");
3748#endif
104c8e6c 3749}
d60d18c6 3750
953fe44f
CB		 3751static int get_config_apparmor_allow_incomplete(const char *key, char *retv,
3752 int inlen, struct lxc_conf *c,
3753 void *data)
d60d18c6 3754{
8f899a4a
CB		 3755#if HAVE_APPARMOR
3756 return lxc_get_conf_int(c, retv, inlen, c->lsm_aa_allow_incomplete);
3757#else
3758 return syserror_set(-EINVAL, "Built without AppArmor support");
3759#endif
d60d18c6 3760}
4203a0b5 3761
1800f924
WB		 3762static int get_config_apparmor_allow_nesting(const char *key, char *retv,
3763 int inlen, struct lxc_conf *c,
3764 void *data)
3765{
8f899a4a
CB		 3766#if HAVE_APPARMOR
3767 return lxc_get_conf_int(c, retv, inlen, c->lsm_aa_allow_nesting);
3768#else
3769 return syserror_set(-EINVAL, "Built without AppArmor support");
3770#endif
1800f924
WB		 3771}
3772
3773static int get_config_apparmor_raw(const char *key, char *retv,
3774 int inlen, struct lxc_conf *c,
3775 void *data)
3776{
8f899a4a 3777#if HAVE_APPARMOR
1800f924
WB		 3778 int len;
3779 struct lxc_list *it;
3780 int fulllen = 0;
3781
3782 if (!retv)
3783 inlen = 0;
3784 else
3785 memset(retv, 0, inlen);
3786
3787 lxc_list_for_each(it, &c->lsm_aa_raw) {
3788 strprint(retv, inlen, "%s\n", (char *)it->elem);
3789 }
3790
3791 return fulllen;
8f899a4a
CB		 3792#else
3793 return syserror_set(-EINVAL, "Built without AppArmor support");
3794#endif
1800f924
WB		 3795}
3796
953fe44f
CB		 3797static int get_config_selinux_context(const char *key, char *retv, int inlen,
3798 struct lxc_conf *c, void *data)
4203a0b5 3799{
d6df2b8f 3800#if HAVE_SELINUX
6bede808 3801 return lxc_get_conf_str(retv, inlen, c->lsm_se_context);
d6df2b8f
CB		 3802#else
3803 return syserror_set(-EINVAL, "Built without SELinux support");
3804#endif
4203a0b5 3805}
b863bf92 3806
4fef78bc
MB		 3807static int get_config_selinux_context_keyring(const char *key, char *retv, int inlen,
3808 struct lxc_conf *c, void *data)
3809{
d6df2b8f 3810#if HAVE_SELINUX
4fef78bc 3811 return lxc_get_conf_str(retv, inlen, c->lsm_se_keyring_context);
d6df2b8f
CB		 3812#else
3813 return syserror_set(-EINVAL, "Built without SELinux support");
3814#endif
4fef78bc
MB		 3815}
3816
8f818a84
MB		 3817static int get_config_keyring_session(const char *key, char *retv, int inlen,
3818 struct lxc_conf *c, void *data)
3819{
3820 return lxc_get_conf_bool(c, retv, inlen, c->keyring_disable_session);
3821}
3822
4fef78bc 3823
25a908b8
CB		 3824/* If you ask for a specific cgroup value, i.e. lxc.cgroup.devices.list, then
3825 * just the value(s) will be printed. Since there still could be more than one,
3826 * it is newline-separated.
8d47350b 3827 * (Maybe that's ambiguous, since some values, i.e. devices.list, will already
25a908b8
CB		 3828 * have newlines?)
3829 * If you ask for 'lxc.cgroup", then all cgroup entries will be printed, in
3830 * 'lxc.cgroup.subsystem.key = value' format.
b863bf92 3831 */
54860ed0
CB		 3832static int __get_config_cgroup_controller(const char *key, char *retv,
3833 int inlen, struct lxc_conf *c,
3834 int version)
b863bf92 3835{
c9dbb8ed
CB		 3836 int fulllen = 0;
3837 bool get_all = false;
b863bf92 3838 int len;
54860ed0
CB		 3839 size_t namespaced_token_len;
3840 char *global_token, *namespaced_token;
c9dbb8ed
CB		 3841 struct list_head *list;
3842 struct lxc_cgroup *cgroup;
b863bf92
CB		 3843
3844 if (!retv)
3845 inlen = 0;
3846 else
3847 memset(retv, 0, inlen);
3848
54860ed0
CB		 3849 if (version == CGROUP2_SUPER_MAGIC) {
3850 global_token = "lxc.cgroup2";
3851 namespaced_token = "lxc.cgroup2.";
6333c915 3852 namespaced_token_len = STRLITERALLEN("lxc.cgroup2.");
c9dbb8ed 3853 list = &c->cgroup2;
54860ed0
CB		 3854 } else if (version == CGROUP_SUPER_MAGIC) {
3855 global_token = "lxc.cgroup";
3856 namespaced_token = "lxc.cgroup.";
6333c915 3857 namespaced_token_len = STRLITERALLEN("lxc.cgroup.");
c9dbb8ed 3858 list = &c->cgroup;
54860ed0 3859 } else {
78205814 3860 return ret_errno(EINVAL);
54860ed0
CB		 3861 }
3862
d62177e9 3863 if (strequal(key, global_token))
b863bf92 3864 get_all = true;
1af3044f 3865 else if (strnequal(key, namespaced_token, namespaced_token_len))
54860ed0 3866 key += namespaced_token_len;
b863bf92 3867 else
78205814 3868 return ret_errno(EINVAL);
b863bf92 3869
c9dbb8ed 3870 list_for_each_entry(cgroup, list, head) {
b863bf92 3871 if (get_all) {
c9dbb8ed 3872 if (version != cgroup->version)
54860ed0
CB		 3873 continue;
3874
47903908 3875 strprint(retv, inlen, "%s.%s = %s\n", global_token,
c9dbb8ed
CB		 3876 cgroup->subsystem, cgroup->value);
3877 } else if (strequal(cgroup->subsystem, key)) {
3878 strprint(retv, inlen, "%s\n", cgroup->value);
b863bf92
CB		 3879 }
3880 }
3881
3882 return fulllen;
3883}
5014ff2e 3884
54860ed0
CB		 3885static int get_config_cgroup_controller(const char *key, char *retv, int inlen,
3886 struct lxc_conf *c, void *data)
3887{
3888 return __get_config_cgroup_controller(key, retv, inlen, c,
3889 CGROUP_SUPER_MAGIC);
3890}
3891
3892static int get_config_cgroup2_controller(const char *key, char *retv, int inlen,
3893 struct lxc_conf *c, void *data)
3894{
3895 return __get_config_cgroup_controller(key, retv, inlen, c,
3896 CGROUP2_SUPER_MAGIC);
3897}
3898
43654d34
CB		 3899static int get_config_cgroup_dir(const char *key, char *retv, int inlen,
3900 struct lxc_conf *lxc_conf, void *data)
3901{
3902 int len;
3903 int fulllen = 0;
3904
d62177e9 3905 if (!strequal(key, "lxc.cgroup.dir"))
c583072d
CB		 3906 return ret_errno(EINVAL);
3907
43654d34
CB		 3908 if (!retv)
3909 inlen = 0;
3910 else
3911 memset(retv, 0, inlen);
3912
3913 strprint(retv, inlen, "%s", lxc_conf->cgroup_meta.dir);
3914
3915 return fulllen;
3916}
3917
a900cbaf
WB		 3918static int get_config_cgroup_monitor_dir(const char *key, char *retv, int inlen,
3919 struct lxc_conf *lxc_conf, void *data)
3920{
3921 int len;
3922 int fulllen = 0;
3923
3924 if (!retv)
3925 inlen = 0;
3926 else
3927 memset(retv, 0, inlen);
3928
3929 strprint(retv, inlen, "%s", lxc_conf->cgroup_meta.monitor_dir);
3930
3931 return fulllen;
3932}
3933
7696c1f9
RJ		 3934static int get_config_cgroup_monitor_pivot_dir(const char *key, char *retv, int inlen,
3935 struct lxc_conf *lxc_conf, void *data)
3936{
3937 int len;
3938 int fulllen = 0;
3939
3940 if (!retv)
3941 inlen = 0;
3942 else
3943 memset(retv, 0, inlen);
3944
3945 strprint(retv, inlen, "%s", lxc_conf->cgroup_meta.monitor_pivot_dir);
3946
3947 return fulllen;
3948}
3949
a900cbaf
WB		 3950static int get_config_cgroup_container_dir(const char *key, char *retv,
3951 int inlen,
3952 struct lxc_conf *lxc_conf,
3953 void *data)
3954{
3955 int len;
3956 int fulllen = 0;
3957
3958 if (!retv)
3959 inlen = 0;
3960 else
3961 memset(retv, 0, inlen);
3962
3963 strprint(retv, inlen, "%s", lxc_conf->cgroup_meta.container_dir);
3964
3965 return fulllen;
3966}
3967
3968static int get_config_cgroup_container_inner_dir(const char *key, char *retv,
3969 int inlen,
3970 struct lxc_conf *lxc_conf,
3971 void *data)
3972{
3973 int len;
3974 int fulllen = 0;
3975
3976 if (!retv)
3977 inlen = 0;
3978 else
3979 memset(retv, 0, inlen);
3980
3981 strprint(retv, inlen, "%s", lxc_conf->cgroup_meta.namespace_dir);
3982
3983 return fulllen;
3984}
3985
9caee129
CB		 3986static inline int get_config_cgroup_relative(const char *key, char *retv,
3987 int inlen, struct lxc_conf *lxc_conf,
3988 void *data)
76f0e2e7
CB		 3989{
3990 return lxc_get_conf_int(lxc_conf, retv, inlen,
9caee129 3991 lxc_conf->cgroup_meta.relative);
76f0e2e7
CB		 3992}
3993
6bede808 3994static int get_config_idmaps(const char *key, char *retv, int inlen,
cccd2219 3995 struct lxc_conf *c, void *data)
5014ff2e 3996{
0589d744 3997 struct id_map *map;
5014ff2e
CB		 3998 int len, listlen, ret;
3999 int fulllen = 0;
4000/* "u 1000 1000000 65536"
4001 *
4002 * let's render this as
4003 *
4004 * sizeof(char)
4005 * +
4006 * sizeof(" ")
4007 * +
c77aee64 4008 * sizeof(uint32_t)
5014ff2e
CB		 4009 * +
4010 * sizeof(" ")
4011 * +
c77aee64 4012 * sizeof(uint32_t)
5014ff2e
CB		 4013 * +
4014 * sizeof(" ")
4015 * +
c77aee64 4016 * sizeof(uint32_t)
5014ff2e
CB		 4017 * +
4018 * \0
4019 */
c77aee64 4020#define __LXC_IDMAP_STR_BUF (3 * INTTYPE_TO_STRLEN(uint32_t) + 3 + 1 + 1)
5014ff2e
CB		 4021 char buf[__LXC_IDMAP_STR_BUF];
4022
4023 if (!retv)
4024 inlen = 0;
4025 else
4026 memset(retv, 0, inlen);
4027
0589d744
CB		 4028 listlen = list_len(&c->id_map);
4029 list_for_each_entry(map, &c->id_map, head) {
3948c252
CB		 4030 ret = strnprintf(buf, sizeof(buf), "%c %lu %lu %lu",
4031 (map->idtype == ID_TYPE_UID) ? 'u' : 'g',
4032 map->nsid, map->hostid, map->range);
4033 if (ret < 0)
2e5db3a2 4034 return ret_errno(EIO);
5014ff2e
CB		 4035
4036 strprint(retv, inlen, "%s%s", buf, (listlen-- > 1) ? "\n" : "");
4037 }
47903908 4038
5014ff2e
CB		 4039 return fulllen;
4040}
b29b29be 4041
46cc906d 4042static int get_config_log_level(const char *key, char *retv, int inlen,
cccd2219 4043 struct lxc_conf *c, void *data)
b29b29be
CB		 4044{
4045 const char *v;
6bede808 4046 v = lxc_log_priority_to_string(c->loglevel);
b29b29be
CB		 4047 return lxc_get_conf_str(retv, inlen, v);
4048}
3d4630ab 4049
46cc906d 4050static int get_config_log_file(const char *key, char *retv, int inlen,
cccd2219 4051 struct lxc_conf *c, void *data)
3d4630ab 4052{
6bede808 4053 return lxc_get_conf_str(retv, inlen, c->logfile);
3d4630ab 4054}
0d601acb 4055
47148e96
CB		 4056static int get_config_mount_fstab(const char *key, char *retv, int inlen,
4057 struct lxc_conf *c, void *data)
0d601acb 4058{
6bede808 4059 return lxc_get_conf_str(retv, inlen, c->fstab);
0d601acb 4060}
43fbf8d9 4061
6bede808 4062static int get_config_mount_auto(const char *key, char *retv, int inlen,
cccd2219 4063 struct lxc_conf *c, void *data)
43fbf8d9
CB		 4064{
4065 int len, fulllen = 0;
4066 const char *sep = "";
4067
4068 if (!retv)
4069 inlen = 0;
4070 else
4071 memset(retv, 0, inlen);
4072
6bede808 4073 if (!(c->auto_mounts & LXC_AUTO_ALL_MASK))
43fbf8d9
CB		 4074 return 0;
4075
6bede808 4076 switch (c->auto_mounts & LXC_AUTO_PROC_MASK) {
43fbf8d9
CB		 4077 case LXC_AUTO_PROC_MIXED:
4078 strprint(retv, inlen, "%sproc:mixed", sep);
4079 sep = " ";
4080 break;
4081 case LXC_AUTO_PROC_RW:
4082 strprint(retv, inlen, "%sproc:rw", sep);
4083 sep = " ";
4084 break;
4085 default:
4086 break;
4087 }
4088
6bede808 4089 switch (c->auto_mounts & LXC_AUTO_SYS_MASK) {
43fbf8d9
CB		 4090 case LXC_AUTO_SYS_RO:
4091 strprint(retv, inlen, "%ssys:ro", sep);
4092 sep = " ";
4093 break;
4094 case LXC_AUTO_SYS_RW:
4095 strprint(retv, inlen, "%ssys:rw", sep);
4096 sep = " ";
4097 break;
4098 case LXC_AUTO_SYS_MIXED:
4099 strprint(retv, inlen, "%ssys:mixed", sep);
4100 sep = " ";
4101 break;
4102 default:
4103 break;
4104 }
4105
6bede808 4106 switch (c->auto_mounts & LXC_AUTO_CGROUP_MASK) {
43fbf8d9
CB		 4107 case LXC_AUTO_CGROUP_NOSPEC:
4108 strprint(retv, inlen, "%scgroup", sep);
43fbf8d9
CB		 4109 break;
4110 case LXC_AUTO_CGROUP_MIXED:
4111 strprint(retv, inlen, "%scgroup:mixed", sep);
43fbf8d9
CB		 4112 break;
4113 case LXC_AUTO_CGROUP_RO:
4114 strprint(retv, inlen, "%scgroup:ro", sep);
43fbf8d9
CB		 4115 break;
4116 case LXC_AUTO_CGROUP_RW:
4117 strprint(retv, inlen, "%scgroup:rw", sep);
43fbf8d9
CB		 4118 break;
4119 case LXC_AUTO_CGROUP_FULL_NOSPEC:
4120 strprint(retv, inlen, "%scgroup-full", sep);
43fbf8d9
CB		 4121 break;
4122 case LXC_AUTO_CGROUP_FULL_MIXED:
4123 strprint(retv, inlen, "%scgroup-full:mixed", sep);
43fbf8d9
CB		 4124 break;
4125 case LXC_AUTO_CGROUP_FULL_RO:
4126 strprint(retv, inlen, "%scgroup-full:ro", sep);
43fbf8d9
CB		 4127 break;
4128 case LXC_AUTO_CGROUP_FULL_RW:
4129 strprint(retv, inlen, "%scgroup-full:rw", sep);
43fbf8d9
CB		 4130 break;
4131 default:
4132 break;
4133 }
4134
4135 return fulllen;
4136}
cc921848 4137
6bede808 4138static int get_config_mount(const char *key, char *retv, int inlen,
cccd2219 4139 struct lxc_conf *c, void *data)
cc921848
CB		 4140{
4141 int len, fulllen = 0;
4142 struct lxc_list *it;
4143
4144 if (!retv)
4145 inlen = 0;
4146 else
4147 memset(retv, 0, inlen);
4148
25a908b8 4149 lxc_list_for_each(it, &c->mount_list) {
cc921848
CB		 4150 strprint(retv, inlen, "%s\n", (char *)it->elem);
4151 }
4152
4153 return fulllen;
4154}
819114b6 4155
7a96a068
CB		 4156static int get_config_rootfs_path(const char *key, char *retv, int inlen,
4157 struct lxc_conf *c, void *data)
819114b6 4158{
6bede808 4159 return lxc_get_conf_str(retv, inlen, c->rootfs.path);
819114b6 4160}
3af60359 4161
6e54330c
CB		 4162static int get_config_rootfs_managed(const char *key, char *retv, int inlen,
4163 struct lxc_conf *c, void *data)
4164{
4165 return lxc_get_conf_bool(c, retv, inlen, c->rootfs.managed);
4166}
4167
6bede808 4168static int get_config_rootfs_mount(const char *key, char *retv, int inlen,
cccd2219 4169 struct lxc_conf *c, void *data)
3af60359 4170{
6bede808 4171 return lxc_get_conf_str(retv, inlen, c->rootfs.mount);
3af60359 4172}
0e9db631 4173
6bede808 4174static int get_config_rootfs_options(const char *key, char *retv, int inlen,
cccd2219 4175 struct lxc_conf *c, void *data)
0e9db631 4176{
e73af35b 4177 return lxc_get_conf_str(retv, inlen, c->rootfs.mnt_opts.raw_options);
0e9db631 4178}
8f183f38 4179
b67771bc 4180static int get_config_uts_name(const char *key, char *retv, int inlen,
cccd2219 4181 struct lxc_conf *c, void *data)
e274f8b0
CB		 4182{
4183 return lxc_get_conf_str(
4184 retv, inlen,
6bede808 4185 c->utsname ? c->utsname->nodename : NULL);
e274f8b0 4186}
466c2e93 4187
6bede808 4188static int get_config_hooks(const char *key, char *retv, int inlen,
cccd2219 4189 struct lxc_conf *c, void *data)
466c2e93
CB		 4190{
4191 char *subkey;
4192 int len, fulllen = 0, found = -1;
4193 struct lxc_list *it;
4194 int i;
4195
466c2e93 4196 subkey = strchr(key, '.');
466c2e93 4197 if (!subkey)
5a848c4b 4198 return ret_errno(EINVAL);
47903908 4199
4200 subkey = strchr(subkey + 1, '.');
637d38f2 4201 if (!subkey)
5a848c4b 4202 return ret_errno(EINVAL);
466c2e93 4203 subkey++;
637d38f2 4204 if (*subkey == '\0')
5a848c4b 4205 return ret_errno(EINVAL);
47903908 4206
466c2e93 4207 for (i = 0; i < NUM_LXC_HOOKS; i++) {
d62177e9 4208 if (strequal(lxchook_names[i], subkey)) {
466c2e93
CB		 4209 found = i;
4210 break;
4211 }
4212 }
47903908 4213
466c2e93 4214 if (found == -1)
5a848c4b 4215 return ret_errno(EINVAL);
466c2e93
CB		 4216
4217 if (!retv)
4218 inlen = 0;
4219 else
4220 memset(retv, 0, inlen);
4221
6bede808 4222 lxc_list_for_each(it, &c->hooks[found]) {
466c2e93
CB		 4223 strprint(retv, inlen, "%s\n", (char *)it->elem);
4224 }
47903908 4225
466c2e93
CB		 4226 return fulllen;
4227}
d2ceff53 4228
44ae0fb6
CB		 4229static int get_config_hooks_version(const char *key, char *retv, int inlen,
4230 struct lxc_conf *c, void *data)
4231{
4232 return lxc_get_conf_int(c, retv, inlen, c->hooks_version);
4233}
4234
f9373e40
CB		 4235static int get_config_net(const char *key, char *retv, int inlen,
4236 struct lxc_conf *c, void *data)
d2ceff53
CB		 4237{
4238 int len, fulllen = 0;
87d0990c 4239 struct lxc_netdev *netdev;
d2ceff53
CB		 4240
4241 if (!retv)
4242 inlen = 0;
4243 else
4244 memset(retv, 0, inlen);
4245
87d0990c
CB		 4246 list_for_each_entry(netdev, &c->netdevs, head) {
4247 const char *t = lxc_net_type_to_str(netdev->type);
d2ceff53
CB		 4248 strprint(retv, inlen, "%s\n", t ? t : "(invalid)");
4249 }
4250
4251 return fulllen;
4252}
bdccff60 4253
6bede808 4254static int get_config_cap_drop(const char *key, char *retv, int inlen,
cccd2219 4255 struct lxc_conf *c, void *data)
1c96d6d8
CB		 4256{
4257 int len, fulllen = 0;
4258 struct lxc_list *it;
4259
4260 if (!retv)
4261 inlen = 0;
4262 else
4263 memset(retv, 0, inlen);
4264
6bede808 4265 lxc_list_for_each(it, &c->caps) {
b80927f2
CB		 4266 strprint(retv, inlen, "%s\n", (char *)it->elem);
4267 }
25a908b8 4268
b80927f2
CB		 4269 return fulllen;
4270}
4271
6bede808 4272static int get_config_cap_keep(const char *key, char *retv, int inlen,
cccd2219 4273 struct lxc_conf *c, void *data)
b80927f2
CB		 4274{
4275 int len, fulllen = 0;
4276 struct lxc_list *it;
4277
4278 if (!retv)
4279 inlen = 0;
4280 else
4281 memset(retv, 0, inlen);
4282
6bede808 4283 lxc_list_for_each(it, &c->keepcaps) {
1c96d6d8
CB		 4284 strprint(retv, inlen, "%s\n", (char *)it->elem);
4285 }
25a908b8 4286
1c96d6d8
CB		 4287 return fulllen;
4288}
0692663a 4289
3aed4934
CB		 4290static int get_config_console_path(const char *key, char *retv, int inlen,
4291 struct lxc_conf *c, void *data)
0692663a 4292{
6bede808 4293 return lxc_get_conf_str(retv, inlen, c->console.path);
0692663a 4294}
794d1c06 4295
6bede808 4296static int get_config_console_logfile(const char *key, char *retv, int inlen,
cccd2219 4297 struct lxc_conf *c, void *data)
794d1c06 4298{
6bede808 4299 return lxc_get_conf_str(retv, inlen, c->console.log_path);
794d1c06 4300}
75f55b1f 4301
d91adfa6
CB		 4302static int get_config_console_rotate(const char *key, char *retv, int inlen,
4303 struct lxc_conf *c, void *data)
4304{
4305 return lxc_get_conf_int(c, retv, inlen, c->console.log_rotate);
4306}
4307
4308
28f3b1cd
CB		 4309static int get_config_console_buffer_size(const char *key, char *retv,
4310 int inlen, struct lxc_conf *c,
4311 void *data)
a04220de 4312{
dcea90a0 4313 return lxc_get_conf_uint64(c, retv, inlen, c->console.buffer_size);
a04220de
CB		 4314}
4315
861813e5
CB		 4316static int get_config_console_size(const char *key, char *retv, int inlen,
4317 struct lxc_conf *c, void *data)
4318{
4319 return lxc_get_conf_uint64(c, retv, inlen, c->console.log_size);
4320}
4321
50d86993
CB		 4322static int get_config_seccomp_allow_nesting(const char *key, char *retv,
4323 int inlen, struct lxc_conf *c,
4324 void *data)
4325{
c3e3c21a
CB		 4326#ifdef HAVE_SECCOMP
4327 return lxc_get_conf_int(c, retv, inlen, c->seccomp.allow_nesting);
4328#else
254b5bdd 4329 return ret_errno(ENOSYS);
c3e3c21a 4330#endif
50d86993 4331}
861813e5 4332
84cf6d25
WB		 4333static int get_config_seccomp_notify_cookie(const char *key, char *retv, int inlen,
4334 struct lxc_conf *c, void *data)
4335{
4336#ifdef HAVE_SECCOMP_NOTIFY
4337 return lxc_get_conf_str(retv, inlen, c->seccomp.notifier.cookie);
4338#else
6d38035e 4339 return ret_errno(ENOSYS);
84cf6d25
WB		 4340#endif
4341}
4342
86ce1da1
CB		 4343static int get_config_seccomp_notify_proxy(const char *key, char *retv, int inlen,
4344 struct lxc_conf *c, void *data)
4345{
c3e3c21a 4346#ifdef HAVE_SECCOMP_NOTIFY
86ce1da1 4347 return lxc_get_conf_str(retv, inlen,
c3e3c21a
CB		 4348 (c->seccomp.notifier.proxy_addr.sun_path[0]) == '/'
4349 ? &c->seccomp.notifier.proxy_addr.sun_path[0]
4350 : &c->seccomp.notifier.proxy_addr.sun_path[1]);
86ce1da1 4351#else
010d7deb 4352 return ret_errno(ENOSYS);
86ce1da1
CB		 4353#endif
4354}
4355
0b427da0
CB		 4356static int get_config_seccomp_profile(const char *key, char *retv, int inlen,
4357 struct lxc_conf *c, void *data)
75f55b1f 4358{
3d46e1d1 4359#ifdef HAVE_SECCOMP
c3e3c21a 4360 return lxc_get_conf_str(retv, inlen, c->seccomp.seccomp);
3d46e1d1
MB		 4361#else
4362 return ret_errno(ENOSYS);
4363#endif
75f55b1f 4364}
97f6dad0 4365
6bede808 4366static int get_config_autodev(const char *key, char *retv, int inlen,
cccd2219 4367 struct lxc_conf *c, void *data)
97f6dad0 4368{
6bede808 4369 return lxc_get_conf_int(c, retv, inlen, c->autodev);
97f6dad0 4370}
afee4324 4371
63012bdd
CK		 4372static int get_config_autodev_tmpfs_size(const char *key, char *retv, int inlen,
4373 struct lxc_conf *c, void *data)
4374{
4375 return lxc_get_conf_int(c, retv, inlen, c->autodevtmpfssize);
4376}
4377
55c84efc 4378static int get_config_signal_halt(const char *key, char *retv, int inlen,
25a908b8 4379 struct lxc_conf *c, void *data)
afee4324 4380{
6bede808 4381 return lxc_get_conf_int(c, retv, inlen, c->haltsignal);
afee4324 4382}
3aa8f359 4383
55c84efc 4384static int get_config_signal_reboot(const char *key, char *retv, int inlen,
25a908b8 4385 struct lxc_conf *c, void *data)
3aa8f359 4386{
6bede808 4387 return lxc_get_conf_int(c, retv, inlen, c->rebootsignal);
3aa8f359 4388}
2e16269f 4389
55c84efc 4390static int get_config_signal_stop(const char *key, char *retv, int inlen,
25a908b8 4391 struct lxc_conf *c, void *data)
2e16269f 4392{
6bede808 4393 return lxc_get_conf_int(c, retv, inlen, c->stopsignal);
2e16269f 4394}
54345299 4395
6bede808 4396static int get_config_start(const char *key, char *retv, int inlen,
cccd2219 4397 struct lxc_conf *c, void *data)
54345299 4398{
d62177e9 4399 if (strequal(key + 10, "auto"))
6bede808 4400 return lxc_get_conf_int(c, retv, inlen, c->start_auto);
d62177e9 4401 else if (strequal(key + 10, "delay"))
6bede808 4402 return lxc_get_conf_int(c, retv, inlen, c->start_delay);
d62177e9 4403 else if (strequal(key + 10, "order"))
6bede808 4404 return lxc_get_conf_int(c, retv, inlen, c->start_order);
54345299 4405
b28be01f 4406 return ret_errno(EINVAL);
54345299 4407}
de9df15e 4408
46cc906d 4409static int get_config_log_syslog(const char *key, char *retv, int inlen,
25a908b8 4410 struct lxc_conf *c, void *data)
de9df15e 4411{
6bede808 4412 return lxc_get_conf_str(retv, inlen, c->syslog);
de9df15e 4413}
ac0f949c 4414
6bede808 4415static int get_config_monitor(const char *key, char *retv, int inlen,
cccd2219 4416 struct lxc_conf *c, void *data)
ac0f949c 4417{
6bede808 4418 return lxc_get_conf_int(c, retv, inlen, c->monitor_unshare);
ac0f949c 4419}
90ec7b6e 4420
258f8051
CB		 4421static int get_config_monitor_signal_pdeath(const char *key, char *retv,
4422 int inlen, struct lxc_conf *c,
4423 void *data)
4424{
4425 return lxc_get_conf_int(c, retv, inlen, c->monitor_signal_pdeath);
4426}
4427
6bede808 4428static int get_config_group(const char *key, char *retv, int inlen,
cccd2219 4429 struct lxc_conf *c, void *data)
90ec7b6e
CB		 4430{
4431 int len, fulllen = 0;
4432 struct lxc_list *it;
4433
4434 if (!retv)
4435 inlen = 0;
4436 else
4437 memset(retv, 0, inlen);
4438
6bede808 4439 lxc_list_for_each(it, &c->groups) {
90ec7b6e
CB		 4440 strprint(retv, inlen, "%s\n", (char *)it->elem);
4441 }
25a908b8 4442
90ec7b6e
CB		 4443 return fulllen;
4444}
aa0db7d3 4445
6bede808 4446static int get_config_environment(const char *key, char *retv, int inlen,
cccd2219 4447 struct lxc_conf *c, void *data)
aa0db7d3
CB		 4448{
4449 int len, fulllen = 0;
c294a68d 4450 struct environment_entry *env;
aa0db7d3
CB		 4451
4452 if (!retv)
4453 inlen = 0;
4454 else
4455 memset(retv, 0, inlen);
4456
c294a68d
CB		 4457 list_for_each_entry(env, &c->environment, head) {
4458 strprint(retv, inlen, "%s=%s\n", env->key, env->val);
aa0db7d3 4459 }
25a908b8 4460
aa0db7d3
CB		 4461 return fulllen;
4462}
96dfcb7d 4463
5cda27c1
SH		 4464static int get_config_execute_cmd(const char *key, char *retv, int inlen,
4465 struct lxc_conf *c, void *data)
4466{
4467 return lxc_get_conf_str(retv, inlen, c->execute_cmd);
4468}
4469
6bede808 4470static int get_config_init_cmd(const char *key, char *retv, int inlen,
cccd2219 4471 struct lxc_conf *c, void *data)
96dfcb7d 4472{
6bede808 4473 return lxc_get_conf_str(retv, inlen, c->init_cmd);
96dfcb7d 4474}
1398e9b1 4475
3c491553
L		 4476static int get_config_init_cwd(const char *key, char *retv, int inlen,
4477 struct lxc_conf *c, void *data)
4478{
4479 return lxc_get_conf_str(retv, inlen, c->init_cwd);
4480}
4481
6bede808 4482static int get_config_init_uid(const char *key, char *retv, int inlen,
cccd2219 4483 struct lxc_conf *c, void *data)
1398e9b1 4484{
6bede808 4485 return lxc_get_conf_int(c, retv, inlen, c->init_uid);
1398e9b1 4486}
dfeb7e42 4487
6bede808 4488static int get_config_init_gid(const char *key, char *retv, int inlen,
cccd2219 4489 struct lxc_conf *c, void *data)
dfeb7e42 4490{
6bede808 4491 return lxc_get_conf_int(c, retv, inlen, c->init_gid);
dfeb7e42 4492}
62048afe 4493
bf31b337
RJ		 4494static int get_config_init_groups(const char *key, char *retv, int inlen,
4495 struct lxc_conf *c, void *data)
4496{
4497 int fulllen = 0, len;
4498
4499 if (!retv)
4500 inlen = 0;
4501 else
4502 memset(retv, 0, inlen);
4503
4504 if (c->init_groups.size == 0)
4505 return 0;
4506
4507 for (int i = 0; i < c->init_groups.size; i++)
4508 strprint(retv, inlen, "%s%d", (i > 0) ? "," : "",
4509 c->init_groups.list[i]);
4510
4511 return fulllen;
4512}
4513
6bede808 4514static int get_config_ephemeral(const char *key, char *retv, int inlen,
cccd2219 4515 struct lxc_conf *c, void *data)
62048afe 4516{
6bede808 4517 return lxc_get_conf_int(c, retv, inlen, c->ephemeral);
62048afe 4518}
b09521ac 4519
6bede808 4520static int get_config_no_new_privs(const char *key, char *retv, int inlen,
cccd2219 4521 struct lxc_conf *c, void *data)
b09521ac 4522{
6bede808 4523 return lxc_get_conf_int(c, retv, inlen, c->no_new_privs);
b09521ac 4524}
389f6466 4525
25a908b8 4526/* If you ask for a specific value, i.e. lxc.prlimit.nofile, then just the value
240d4b74 4527 * will be printed. If you ask for 'lxc.prlimit', then all limit entries will be
4528 * printed, in 'lxc.prlimit.resource = value' format.
389f6466 4529 */
240d4b74 4530static int get_config_prlimit(const char *key, char *retv, int inlen,
47903908 4531 struct lxc_conf *c, void *data)
389f6466
CB		 4532{
4533 int fulllen = 0, len;
4534 bool get_all = false;
223797c3 4535 struct lxc_limit *lim;
389f6466
CB		 4536
4537 if (!retv)
4538 inlen = 0;
4539 else
4540 memset(retv, 0, inlen);
4541
d62177e9 4542 if (strequal(key, "lxc.prlimit"))
389f6466 4543 get_all = true;
1af3044f 4544 else if (strnequal(key, "lxc.prlimit.", 12))
240d4b74 4545 key += 12;
389f6466 4546 else
4c12267e 4547 return ret_errno(EINVAL);
389f6466 4548
223797c3 4549 list_for_each_entry(lim, &c->limits, head) {
c77aee64
CB		 4550 /* 2 colon separated 64 bit integers or the word 'unlimited' */
4551 char buf[INTTYPE_TO_STRLEN(uint64_t) * 2 + 2];
389f6466 4552 int partlen;
389f6466
CB		 4553
4554 if (lim->limit.rlim_cur == RLIM_INFINITY) {
6333c915
CB		 4555 memcpy(buf, "unlimited", STRLITERALLEN("unlimited") + 1);
4556 partlen = STRLITERALLEN("unlimited");
389f6466
CB		 4557 } else {
4558 partlen = sprintf(buf, "%" PRIu64,
4559 (uint64_t)lim->limit.rlim_cur);
4560 }
47903908 4561
389f6466 4562 if (lim->limit.rlim_cur != lim->limit.rlim_max) {
25a908b8 4563 if (lim->limit.rlim_max == RLIM_INFINITY)
389f6466 4564 memcpy(buf + partlen, ":unlimited",
6333c915 4565 STRLITERALLEN(":unlimited") + 1);
25a908b8 4566 else
389f6466
CB		 4567 sprintf(buf + partlen, ":%" PRIu64,
4568 (uint64_t)lim->limit.rlim_max);
389f6466
CB		 4569 }
4570
4571 if (get_all) {
240d4b74 4572 strprint(retv, inlen, "lxc.prlimit.%s = %s\n",
389f6466 4573 lim->resource, buf);
d62177e9 4574 } else if (strequal(lim->resource, key)) {
389f6466
CB		 4575 strprint(retv, inlen, "%s", buf);
4576 }
4577 }
4578
4579 return fulllen;
4580}
e08cb901 4581
e409b214
CB		 4582/* If you ask for a specific value, i.e. lxc.sysctl.net.ipv4.ip_forward, then
4583 * just the value will be printed. If you ask for 'lxc.sysctl', then all sysctl
4584 * entries will be printed, in 'lxc.sysctl.key = value' format.
7edd0540
L		 4585 */
4586static int get_config_sysctl(const char *key, char *retv, int inlen,
47903908 4587 struct lxc_conf *c, void *data)
7edd0540 4588{
7edd0540
L		 4589 int fulllen = 0;
4590 bool get_all = false;
ba9f9347
CB		 4591 int len;
4592 struct lxc_sysctl *sysctl;
7edd0540
L		 4593
4594 if (!retv)
4595 inlen = 0;
4596 else
4597 memset(retv, 0, inlen);
4598
d62177e9 4599 if (strequal(key, "lxc.sysctl"))
7edd0540 4600 get_all = true;
1af3044f 4601 else if (strnequal(key, "lxc.sysctl.", STRLITERALLEN("lxc.sysctl.")))
6333c915 4602 key += STRLITERALLEN("lxc.sysctl.");
7edd0540 4603 else
4b1ef6aa 4604 return ret_errno(EINVAL);
7edd0540 4605
ba9f9347 4606 list_for_each_entry(sysctl, &c->sysctls, head) {
7edd0540 4607 if (get_all) {
ba9f9347
CB		 4608 strprint(retv, inlen, "lxc.sysctl.%s = %s\n", sysctl->key,
4609 sysctl->value);
4610 } else if (strequal(sysctl->key, key)) {
4611 strprint(retv, inlen, "%s", sysctl->value);
7edd0540
L		 4612 }
4613 }
4614
4615 return fulllen;
4616}
4617
61d7a733 4618static int get_config_proc(const char *key, char *retv, int inlen,
47903908 4619 struct lxc_conf *c, void *data)
61d7a733 4620{
61d7a733
YT		 4621 int fulllen = 0;
4622 bool get_all = false;
91d04bf9
CB		 4623 int len;
4624 struct lxc_proc *proc;
61d7a733
YT		 4625
4626 if (!retv)
4627 inlen = 0;
4628 else
4629 memset(retv, 0, inlen);
4630
d62177e9 4631 if (strequal(key, "lxc.proc"))
61d7a733 4632 get_all = true;
1af3044f 4633 else if (strnequal(key, "lxc.proc.", STRLITERALLEN("lxc.proc.")))
6333c915 4634 key += STRLITERALLEN("lxc.proc.");
61d7a733 4635 else
5ab1dbcf 4636 return ret_errno(EINVAL);
61d7a733 4637
91d04bf9 4638 list_for_each_entry(proc, &c->procs, head) {
61d7a733
YT		 4639 if (get_all) {
4640 strprint(retv, inlen, "lxc.proc.%s = %s\n",
47903908 4641 proc->filename, proc->value);
d62177e9 4642 } else if (strequal(proc->filename, key)) {
61d7a733
YT		 4643 strprint(retv, inlen, "%s", proc->value);
4644 }
4645 }
4646
4647 return fulllen;
4648}
4649
1d8d3676
CB		 4650static int get_config_namespace_clone(const char *key, char *retv, int inlen,
4651 struct lxc_conf *c, void *data)
4652{
4653 int i, len;
4654 int fulllen = 0;
4655
4656 if (!retv)
4657 inlen = 0;
4658 else
4659 memset(retv, 0, inlen);
4660
4661 for (i = 0; i < LXC_NS_MAX; i++) {
4662 if (c->ns_clone & ns_info[i].clone_flag)
4663 strprint(retv, inlen, "%s\n", ns_info[i].proc_name);
4664 }
4665
4666 return fulllen;
4667}
4668
abeb5bba
CB		 4669static int get_config_namespace_keep(const char *key, char *retv, int inlen,
4670 struct lxc_conf *c, void *data)
4671{
4672 int i, len;
4673 int fulllen = 0;
4674
4675 if (!retv)
4676 inlen = 0;
4677 else
4678 memset(retv, 0, inlen);
4679
4680 for (i = 0; i < LXC_NS_MAX; i++) {
4681 if (c->ns_keep & ns_info[i].clone_flag)
4682 strprint(retv, inlen, "%s\n", ns_info[i].proc_name);
4683 }
4684
4685 return fulllen;
4686}
4687
70fd7fc9
CB		 4688static int get_config_time_offset_boot(const char *key, char *retv, int inlen, struct lxc_conf *c,
4689 void *data)
4690{
4691 int len;
4692 int fulllen = 0;
4693
4694 if (!retv)
4695 inlen = 0;
4696 else
4697 memset(retv, 0, inlen);
4698
4699 if (c->timens.s_boot) {
4700 strprint(retv, inlen, "%" PRId64 " s\n", c->timens.s_boot);
4701 } else {
4702 strprint(retv, inlen, "%" PRId64 " ns\n", c->timens.ns_boot);
4703 }
4704
4705 return fulllen;
4706}
4707
4708static int get_config_time_offset_monotonic(const char *key, char *retv, int inlen,
4709 struct lxc_conf *c, void *data)
4710{
4711 int len;
4712 int fulllen = 0;
4713
4714 if (!retv)
4715 inlen = 0;
4716 else
4717 memset(retv, 0, inlen);
4718
4719 if (c->timens.s_monotonic) {
4720 strprint(retv, inlen, "%" PRId64 "s\n", c->timens.s_monotonic);
4721 } else {
4722 strprint(retv, inlen, "%" PRId64 "ns\n", c->timens.ns_monotonic);
4723 }
4724
4725 return fulllen;
4726}
4727
b074bbf1
CB		 4728static int get_config_namespace_share(const char *key, char *retv, int inlen,
4729 struct lxc_conf *c, void *data)
28d9e29e
CB		 4730{
4731 int len, ns_idx;
4732 const char *namespace;
4733 int fulllen = 0;
4734
4735 if (!retv)
4736 inlen = 0;
4737 else
4738 memset(retv, 0, inlen);
4739
6333c915 4740 namespace = key + STRLITERALLEN("lxc.namespace.share.");
057d2cae
CB		 4741 if (is_empty_string(namespace))
4742 return ret_errno(EINVAL);
4743
28d9e29e
CB		 4744 ns_idx = lxc_namespace_2_ns_idx(namespace);
4745 if (ns_idx < 0)
4746 return ns_idx;
4747
b074bbf1 4748 strprint(retv, inlen, "%s", c->ns_share[ns_idx]);
28d9e29e
CB		 4749
4750 return fulllen;
4751}
4752
e08cb901 4753/* Callbacks to clear config items. */
26471403
CB		 4754static inline int clr_config_personality(const char *key, struct lxc_conf *c,
4755 void *data)
e08cb901
CB		 4756{
4757 c->personality = -1;
4758 return 0;
4759}
03818ae3 4760
232763d6
CB		 4761static inline int clr_config_pty_max(const char *key, struct lxc_conf *c,
4762 void *data)
03818ae3 4763{
e528c735 4764 c->pty_max = 0;
03818ae3
CB		 4765 return 0;
4766}
e7a4b096 4767
fe1c5887
CB		 4768static inline int clr_config_tty_max(const char *key, struct lxc_conf *c,
4769 void *data)
e7a4b096 4770{
885766f5 4771 c->ttys.tty = 0;
e7a4b096
CB		 4772 return 0;
4773}
eaf8c0c7 4774
42e53c29 4775static inline int clr_config_tty_dir(const char *key, struct lxc_conf *c,
26471403 4776 void *data)
eaf8c0c7 4777{
faf3d0ae 4778 free_disarm(c->ttys.dir);
eaf8c0c7
CB		 4779 return 0;
4780}
6bd86308 4781
953fe44f
CB		 4782static inline int clr_config_apparmor_profile(const char *key,
4783 struct lxc_conf *c, void *data)
025718fb 4784{
8f899a4a 4785#if HAVE_APPARMOR
1c64e3ed 4786 free_disarm(c->lsm_aa_profile);
025718fb 4787 return 0;
8f899a4a
CB		 4788#else
4789 return syserror_set(-EINVAL, "Built without AppArmor support");
4790#endif
025718fb 4791}
3061e04e 4792
953fe44f
CB		 4793static inline int clr_config_apparmor_allow_incomplete(const char *key,
4794 struct lxc_conf *c,
4795 void *data)
3061e04e 4796{
8f899a4a 4797#if HAVE_APPARMOR
3061e04e
CB		 4798 c->lsm_aa_allow_incomplete = 0;
4799 return 0;
8f899a4a
CB		 4800#else
4801 return syserror_set(-EINVAL, "Built without AppArmor support");
4802#endif
3061e04e 4803}
31fc3494 4804
1800f924
WB		 4805static inline int clr_config_apparmor_allow_nesting(const char *key,
4806 struct lxc_conf *c,
4807 void *data)
4808{
8f899a4a 4809#if HAVE_APPARMOR
1800f924
WB		 4810 c->lsm_aa_allow_nesting = 0;
4811 return 0;
8f899a4a
CB		 4812#else
4813 return syserror_set(-EINVAL, "Built without AppArmor support");
4814#endif
1800f924
WB		 4815}
4816
4817static inline int clr_config_apparmor_raw(const char *key,
4818 struct lxc_conf *c,
4819 void *data)
4820{
8f899a4a 4821#if HAVE_APPARMOR
1800f924 4822 return lxc_clear_apparmor_raw(c);
8f899a4a
CB		 4823#else
4824 return syserror_set(-EINVAL, "Built without AppArmor support");
4825#endif
1800f924
WB		 4826}
4827
953fe44f
CB		 4828static inline int clr_config_selinux_context(const char *key,
4829 struct lxc_conf *c, void *data)
31fc3494 4830{
d6df2b8f 4831#if HAVE_SELINUX
6afcf6dd 4832 free_disarm(c->lsm_se_context);
31fc3494 4833 return 0;
d6df2b8f
CB		 4834#else
4835 return syserror_set(-EINVAL, "Built without SELinux support");
4836#endif
31fc3494 4837}
754d01ce 4838
4fef78bc
MB		 4839static inline int clr_config_selinux_context_keyring(const char *key,
4840 struct lxc_conf *c, void *data)
4841{
d6df2b8f 4842#if HAVE_SELINUX
b60c8dd9 4843 free_disarm(c->lsm_se_keyring_context);
4fef78bc 4844 return 0;
d6df2b8f
CB		 4845#else
4846 return syserror_set(-EINVAL, "Built without SELinux support");
4847#endif
4fef78bc
MB		 4848}
4849
8f818a84
MB		 4850static inline int clr_config_keyring_session(const char *key,
4851 struct lxc_conf *c, void *data)
4852{
4853 c->keyring_disable_session = false;
4854 return 0;
4855}
4856
43654d34
CB		 4857static inline int clr_config_cgroup_controller(const char *key,
4858 struct lxc_conf *c, void *data)
754d01ce 4859{
54860ed0
CB		 4860 return lxc_clear_cgroups(c, key, CGROUP_SUPER_MAGIC);
4861}
4862
4863static inline int clr_config_cgroup2_controller(const char *key,
4864 struct lxc_conf *c, void *data)
4865{
4866 return lxc_clear_cgroups(c, key, CGROUP2_SUPER_MAGIC);
754d01ce 4867}
d3a178de 4868
43654d34
CB		 4869static int clr_config_cgroup_dir(const char *key, struct lxc_conf *lxc_conf,
4870 void *data)
4871{
d62177e9 4872 if (!strequal(key, "lxc.cgroup.dir"))
c583072d
CB		 4873 return ret_errno(EINVAL);
4874
bd5501d2
CB		 4875 if (lxc_conf->cgroup_meta.dir)
4876 free_disarm(lxc_conf->cgroup_meta.dir);
43654d34
CB		 4877
4878 return 0;
4879}
4880
a900cbaf
WB		 4881static int clr_config_cgroup_monitor_dir(const char *key,
4882 struct lxc_conf *lxc_conf,
4883 void *data)
4884{
4885 free_disarm(lxc_conf->cgroup_meta.monitor_dir);
4886 return 0;
4887}
4888
7696c1f9
RJ		 4889static int clr_config_cgroup_monitor_pivot_dir(const char *key,
4890 struct lxc_conf *lxc_conf,
4891 void *data)
4892{
4893 free_disarm(lxc_conf->cgroup_meta.monitor_pivot_dir);
4894 return 0;
4895}
4896
a900cbaf
WB		 4897static int clr_config_cgroup_container_dir(const char *key,
4898 struct lxc_conf *lxc_conf,
4899 void *data)
4900{
4901 free_disarm(lxc_conf->cgroup_meta.container_dir);
4902 return 0;
4903}
4904
4905static int clr_config_cgroup_container_inner_dir(const char *key,
4906 struct lxc_conf *lxc_conf,
4907 void *data)
4908{
4909 free_disarm(lxc_conf->cgroup_meta.namespace_dir);
4910 return 0;
4911}
4912
9caee129
CB		 4913static inline int clr_config_cgroup_relative(const char *key,
4914 struct lxc_conf *lxc_conf,
4915 void *data)
76f0e2e7 4916{
9caee129 4917 lxc_conf->cgroup_meta.relative = false;
76f0e2e7
CB		 4918 return 0;
4919}
4920
26471403
CB		 4921static inline int clr_config_idmaps(const char *key, struct lxc_conf *c,
4922 void *data)
d3a178de
CB		 4923{
4924 return lxc_clear_idmaps(c);
4925}
97d3338d 4926
46cc906d 4927static inline int clr_config_log_level(const char *key, struct lxc_conf *c,
26471403 4928 void *data)
97d3338d 4929{
4b73005c 4930 c->loglevel = LXC_LOG_LEVEL_NOTSET;
97d3338d
CB		 4931 return 0;
4932}
de46099c 4933
46cc906d 4934static inline int clr_config_log_file(const char *key, struct lxc_conf *c,
26471403 4935 void *data)
de46099c 4936{
150c191e 4937 free_disarm(c->logfile);
de46099c
CB		 4938 return 0;
4939}
b4fa13cd 4940
26471403
CB		 4941static inline int clr_config_mount(const char *key, struct lxc_conf *c,
4942 void *data)
b4fa13cd
CB		 4943{
4944 return lxc_clear_mount_entries(c);
4945}
4be81021 4946
26471403
CB		 4947static inline int clr_config_mount_auto(const char *key, struct lxc_conf *c,
4948 void *data)
4be81021
CB		 4949{
4950 return lxc_clear_automounts(c);
4951}
350d4b15 4952
47148e96
CB		 4953static inline int clr_config_mount_fstab(const char *key, struct lxc_conf *c,
4954 void *data)
350d4b15 4955{
6620228b 4956 free_disarm(c->fstab);
350d4b15
CB		 4957 return 0;
4958}
faca124d 4959
7a96a068
CB		 4960static inline int clr_config_rootfs_path(const char *key, struct lxc_conf *c,
4961 void *data)
faca124d 4962{
ad16f12d 4963 free_disarm(c->rootfs.path);
faca124d
CB		 4964 return 0;
4965}
4966
6e54330c
CB		 4967static inline int clr_config_rootfs_managed(const char *key, struct lxc_conf *c,
4968 void *data)
4969{
4970 c->rootfs.managed = true;
4971 return 0;
4972}
4973
26471403
CB		 4974static inline int clr_config_rootfs_mount(const char *key, struct lxc_conf *c,
4975 void *data)
fddefc2d 4976{
7decd496 4977 free_disarm(c->rootfs.mount);
fddefc2d
CB		 4978 return 0;
4979}
7b1eb67d 4980
26471403
CB		 4981static inline int clr_config_rootfs_options(const char *key, struct lxc_conf *c,
4982 void *data)
7b1eb67d 4983{
423374e9 4984 put_lxc_mount_options(&c->rootfs.mnt_opts);
3437f95c 4985
7b1eb67d
CB		 4986 return 0;
4987}
02becb8d 4988
b67771bc 4989static inline int clr_config_uts_name(const char *key, struct lxc_conf *c,
26471403 4990 void *data)
d31d0103 4991{
137ee4b6 4992 free_disarm(c->utsname);
d31d0103
CB		 4993 return 0;
4994}
c9eeb90c 4995
26471403
CB		 4996static inline int clr_config_hooks(const char *key, struct lxc_conf *c,
4997 void *data)
c9eeb90c
CB		 4998{
4999 return lxc_clear_hooks(c, key);
5000}
5001
44ae0fb6
CB		 5002static inline int clr_config_hooks_version(const char *key, struct lxc_conf *c,
5003 void *data)
5004{
5005 /* default to legacy hooks version */
5006 c->hooks_version = 0;
5007 return 0;
5008}
5009
f9373e40
CB		 5010static inline int clr_config_net(const char *key, struct lxc_conf *c,
5011 void *data)
f4488271 5012{
87d0990c 5013 lxc_free_networks(c);
c302b476 5014
e5d2fd7c 5015 return 0;
f4488271
CB		 5016}
5017
26471403
CB		 5018static inline int clr_config_cap_drop(const char *key, struct lxc_conf *c,
5019 void *data)
244cb55b
CB		 5020{
5021 return lxc_clear_config_caps(c);
5022}
c74cc490 5023
26471403
CB		 5024static inline int clr_config_cap_keep(const char *key, struct lxc_conf *c,
5025 void *data)
c74cc490
CB		 5026{
5027 return lxc_clear_config_keepcaps(c);
5028}
4e5b633f 5029
3aed4934
CB		 5030static inline int clr_config_console_path(const char *key, struct lxc_conf *c,
5031 void *data)
4e5b633f 5032{
2ed97e6f 5033 free_disarm(c->console.path);
4e5b633f
CB		 5034 return 0;
5035}
5036
7c2ec23a 5037static inline int clr_config_console_logfile(const char *key,
26471403 5038 struct lxc_conf *c, void *data)
7c2ec23a 5039{
e68dfc25 5040 free_disarm(c->console.log_path);
7c2ec23a
CB		 5041 return 0;
5042}
bbca37d8 5043
d91adfa6
CB		 5044static inline int clr_config_console_rotate(const char *key, struct lxc_conf *c,
5045 void *data)
5046{
5047 c->console.log_rotate = 0;
5048 return 0;
5049}
5050
28f3b1cd
CB		 5051static inline int clr_config_console_buffer_size(const char *key,
5052 struct lxc_conf *c, void *data)
a04220de 5053{
28f3b1cd 5054 c->console.buffer_size = 0;
a04220de
CB		 5055 return 0;
5056}
5057
861813e5
CB		 5058static inline int clr_config_console_size(const char *key, struct lxc_conf *c,
5059 void *data)
5060{
5061 c->console.log_size = 0;
5062 return 0;
5063}
5064
50d86993
CB		 5065static inline int clr_config_seccomp_allow_nesting(const char *key,
5066 struct lxc_conf *c, void *data)
5067{
c3e3c21a
CB		 5068#ifdef HAVE_SECCOMP
5069 c->seccomp.allow_nesting = 0;
50d86993 5070 return 0;
c3e3c21a 5071#else
0a6980fe 5072 return ret_errno(ENOSYS);
c3e3c21a 5073#endif
50d86993
CB		 5074}
5075
84cf6d25
WB		 5076static inline int clr_config_seccomp_notify_cookie(const char *key,
5077 struct lxc_conf *c, void *data)
5078{
5079#ifdef HAVE_SECCOMP_NOTIFY
46bc1573 5080 free_disarm(c->seccomp.notifier.cookie);
84cf6d25
WB		 5081 return 0;
5082#else
46bc1573 5083 return ret_errno(ENOSYS);
84cf6d25
WB		 5084#endif
5085}
5086
86ce1da1
CB		 5087static inline int clr_config_seccomp_notify_proxy(const char *key,
5088 struct lxc_conf *c, void *data)
5089{
c3e3c21a
CB		 5090#ifdef HAVE_SECCOMP_NOTIFY
5091 memset(&c->seccomp.notifier.proxy_addr, 0,
5092 sizeof(c->seccomp.notifier.proxy_addr));
86ce1da1
CB		 5093 return 0;
5094#else
eaade76d 5095 return ret_errno(ENOSYS);
86ce1da1
CB		 5096#endif
5097}
5098
0b427da0
CB		 5099static inline int clr_config_seccomp_profile(const char *key,
5100 struct lxc_conf *c, void *data)
bbca37d8 5101{
9902a5d0 5102 free_disarm(c->seccomp.seccomp);
bbca37d8
CB		 5103 return 0;
5104}
c721e86c 5105
26471403
CB		 5106static inline int clr_config_autodev(const char *key, struct lxc_conf *c,
5107 void *data)
c721e86c
CB		 5108{
5109 c->autodev = 1;
5110 return 0;
5111}
87b288d1 5112
63012bdd
CK		 5113static inline int clr_config_autodev_tmpfs_size(const char *key, struct lxc_conf *c,
5114 void *data)
5115{
5116 c->autodevtmpfssize = 500000;
5117 return 0;
5118}
5119
55c84efc 5120static inline int clr_config_signal_halt(const char *key, struct lxc_conf *c,
26471403 5121 void *data)
87b288d1
CB		 5122{
5123 c->haltsignal = 0;
5124 return 0;
5125}
cae63cfa 5126
55c84efc 5127static inline int clr_config_signal_reboot(const char *key, struct lxc_conf *c,
26471403 5128 void *data)
cae63cfa
CB		 5129{
5130 c->rebootsignal = 0;
5131 return 0;
5132}
de45f3a8 5133
55c84efc 5134static inline int clr_config_signal_stop(const char *key, struct lxc_conf *c,
26471403 5135 void *data)
de45f3a8
CB		 5136{
5137 c->stopsignal = 0;
5138 return 0;
5139}
c6182222 5140
26471403
CB		 5141static inline int clr_config_start(const char *key, struct lxc_conf *c,
5142 void *data)
c6182222 5143{
d62177e9 5144 if (strequal(key + 10, "auto"))
c6182222 5145 c->start_auto = 0;
d62177e9 5146 else if (strequal(key + 10, "delay"))
c6182222 5147 c->start_delay = 0;
d62177e9 5148 else if (strequal(key + 10, "order"))
c6182222
CB		 5149 c->start_order = 0;
5150
5151 return 0;
5152}
998ca94f 5153
46cc906d 5154static inline int clr_config_log_syslog(const char *key, struct lxc_conf *c,
26471403 5155 void *data)
998ca94f 5156{
f9f6f28f 5157 free_disarm(c->syslog);
998ca94f
CB		 5158 return 0;
5159}
adad12ca 5160
26471403
CB		 5161static inline int clr_config_monitor(const char *key, struct lxc_conf *c,
5162 void *data)
adad12ca
CB		 5163{
5164 c->monitor_unshare = 0;
5165 return 0;
5166}
4850d223 5167
258f8051
CB		 5168static inline int clr_config_monitor_signal_pdeath(const char *key,
5169 struct lxc_conf *c, void *data)
5170{
5171 c->monitor_signal_pdeath = 0;
5172 return 0;
5173}
5174
26471403
CB		 5175static inline int clr_config_group(const char *key, struct lxc_conf *c,
5176 void *data)
4850d223
CB		 5177{
5178 return lxc_clear_groups(c);
5179}
832fb63a 5180
26471403
CB		 5181static inline int clr_config_environment(const char *key, struct lxc_conf *c,
5182 void *data)
832fb63a
CB		 5183{
5184 return lxc_clear_environment(c);
4850d223 5185}
8e90af3e 5186
5cda27c1
SH		 5187static inline int clr_config_execute_cmd(const char *key, struct lxc_conf *c,
5188 void *data)
5189{
e8f6cdb3 5190 free_disarm(c->execute_cmd);
5cda27c1
SH		 5191 return 0;
5192}
5193
26471403
CB		 5194static inline int clr_config_init_cmd(const char *key, struct lxc_conf *c,
5195 void *data)
8e90af3e 5196{
df45b761 5197 free_disarm(c->init_cmd);
8e90af3e
CB		 5198 return 0;
5199}
ec76dcfb 5200
3c491553
L		 5201static inline int clr_config_init_cwd(const char *key, struct lxc_conf *c,
5202 void *data)
5203{
5fab421a 5204 free_disarm(c->init_cwd);
3c491553
L		 5205 return 0;
5206}
5207
26471403
CB		 5208static inline int clr_config_init_uid(const char *key, struct lxc_conf *c,
5209 void *data)
ec76dcfb
CB		 5210{
5211 c->init_uid = 0;
5212 return 0;
5213}
1044b247 5214
26471403
CB		 5215static inline int clr_config_init_gid(const char *key, struct lxc_conf *c,
5216 void *data)
1044b247
CB		 5217{
5218 c->init_gid = 0;
5219 return 0;
5220}
59e370db 5221
bf31b337
RJ		 5222static inline int clr_config_init_groups(const char *key, struct lxc_conf *c,
5223 void *data)
5224{
bf31b337 5225 c->init_groups.size = 0;
c71f64cb 5226 free_disarm(c->init_groups.list);
bf31b337
RJ		 5227 return 0;
5228}
5229
26471403
CB		 5230static inline int clr_config_ephemeral(const char *key, struct lxc_conf *c,
5231 void *data)
59e370db
CB		 5232{
5233 c->ephemeral = 0;
5234 return 0;
5235}
b98c5ab0 5236
26471403
CB		 5237static inline int clr_config_no_new_privs(const char *key, struct lxc_conf *c,
5238 void *data)
b98c5ab0
CB		 5239{
5240 c->no_new_privs = false;
5241 return 0;
5242}
715ccc96 5243
240d4b74 5244static inline int clr_config_prlimit(const char *key, struct lxc_conf *c,
26471403 5245 void *data)
715ccc96
CB		 5246{
5247 return lxc_clear_limits(c, key);
5248}
fdf3c589 5249
7edd0540
L		 5250static inline int clr_config_sysctl(const char *key, struct lxc_conf *c,
5251 void *data)
5252{
5253 return lxc_clear_sysctls(c, key);
5254}
5255
61d7a733
YT		 5256static inline int clr_config_proc(const char *key, struct lxc_conf *c,
5257 void *data)
5258{
5259 return lxc_clear_procs(c, key);
5260}
5261
26471403
CB		 5262static inline int clr_config_includefiles(const char *key, struct lxc_conf *c,
5263 void *data)
fdf3c589 5264{
fdf3c589
CB		 5265 return 0;
5266}
a3c8e600 5267
1d8d3676
CB		 5268static int clr_config_namespace_clone(const char *key,
5269 struct lxc_conf *lxc_conf, void *data)
5270{
5271 lxc_conf->ns_clone = 0;
5272 return 0;
5273}
5274
abeb5bba
CB		 5275static int clr_config_namespace_keep(const char *key, struct lxc_conf *lxc_conf,
5276 void *data)
5277{
5278 lxc_conf->ns_keep = 0;
5279 return 0;
5280}
5281
70fd7fc9
CB		 5282static int clr_config_time_offset_boot(const char *key, struct lxc_conf *lxc_conf, void *data)
5283{
5284 lxc_conf->timens.s_boot = 0;
5285 lxc_conf->timens.ns_boot = 0;
5286 return 0;
5287}
5288
5289static int clr_config_time_offset_monotonic(const char *key, struct lxc_conf *lxc_conf, void *data)
5290{
5291 lxc_conf->timens.s_monotonic = 0;
5292 lxc_conf->timens.ns_monotonic = 0;
5293 return 0;
5294}
5295
b074bbf1
CB		 5296static int clr_config_namespace_share(const char *key,
5297 struct lxc_conf *lxc_conf, void *data)
28d9e29e
CB		 5298{
5299 int ns_idx;
5300 const char *namespace;
5301
6333c915 5302 namespace = key + STRLITERALLEN("lxc.namespace.share.");
057d2cae
CB		 5303 if (is_empty_string(namespace))
5304 return ret_errno(EINVAL);
5305
28d9e29e
CB		 5306 ns_idx = lxc_namespace_2_ns_idx(namespace);
5307 if (ns_idx < 0)
5308 return ns_idx;
5309
b074bbf1
CB		 5310 free(lxc_conf->ns_share[ns_idx]);
5311 lxc_conf->ns_share[ns_idx] = NULL;
28d9e29e
CB		 5312
5313 return 0;
5314}
5315
a3c8e600 5316static int get_config_includefiles(const char *key, char *retv, int inlen,
cccd2219 5317 struct lxc_conf *c, void *data)
a3c8e600 5318{
218c46ec 5319 return ret_errno(ENOSYS);
a3c8e600 5320}
40db5d2f 5321
7707b0e0
CB		 5322struct config_net_info {
5323 char buf[NETWORK_SUBKEY_SIZE_MAX];
5324 const char *subkey;
5325 const struct lxc_config_net_t *ops;
5326 struct lxc_netdev *netdev;
5327};
5328
5329static int get_network_config_ops(const char *key, struct lxc_conf *lxc_conf,
5330 struct config_net_info *info, bool allocate)
40db5d2f 5331{
31ee747b 5332 int ret;
0abcc213 5333 int64_t tmpidx;
7707b0e0
CB		 5334 unsigned int idx;
5335 const char *idx_start;
0abcc213
CB		 5336
5337 if (is_empty_string(key))
7707b0e0 5338 return ret_errno(EINVAL);
40db5d2f
CB		 5339
5340 /* check that this is a sensible network key */
6a52a513 5341 if (!strnequal("lxc.net.", key, STRLITERALLEN("lxc.net.")))
7707b0e0 5342 return syserror_set(-EINVAL, "Invalid network configuration key \"%s\"", key);
40db5d2f 5343
f9373e40 5344 /* lxc.net.<n> */
0abcc213
CB		 5345 /* beginning of index string */
5346 idx_start = key + STRLITERALLEN("lxc.net.");
5347 if (!isdigit(*idx_start))
7707b0e0 5348 return syserror_set(-EINVAL, "Failed to detect digit in string \"%s\"", key + 8);
40db5d2f 5349
7707b0e0 5350 ret = lxc_safe_int64_residual(idx_start, &tmpidx, 10, info->buf, sizeof(info->buf));
0abcc213 5351 if (ret)
7707b0e0 5352 return syserror("Failed to parse network index");
40db5d2f 5353
0abcc213 5354 if (tmpidx < 0 || tmpidx >= INT_MAX)
7707b0e0
CB		 5355 return syserror_set(-ERANGE, "Number of configured networks would overflow the counter");
5356 idx = (unsigned int)tmpidx;
31ee747b 5357
7707b0e0
CB		 5358 info->netdev = lxc_get_netdev_by_idx(lxc_conf, idx, allocate);
5359 if (!info->netdev)
5360 return ret_errno(EINVAL);
5361
5362 /* Make sure subkey points to the empty string. */
5363 info->subkey = info->buf;
5364 if (is_empty_string(info->subkey))
5365 return ret_errno(ENOENT);
31ee747b 5366
7707b0e0
CB		 5367 if (info->subkey[0] != '.')
5368 return syserror_set(-EINVAL, "Invalid subkey");
5369 info->subkey++;
31ee747b 5370
7451daf8 5371 /* lxc.net.<idx>.<subkey> */
7707b0e0 5372 info->ops = lxc_get_config_net(info->subkey);
6773e108 5373 if (info->ops == &unsupported_config_net_key)
7707b0e0 5374 return syserror_set(-ENOENT, "Unknown network configuration key \"%s\"", key);
7451daf8 5375
7707b0e0 5376 return 0;
40db5d2f
CB		 5377}
5378
25a908b8
CB		 5379/* Config entry is something like "lxc.net.0.ipv4" the key 'lxc.net.' was
5380 * found. So we make sure next comes an integer, find the right callback (by
5381 * rewriting the key), and call it.
40db5d2f 5382 */
7707b0e0
CB		 5383static int set_config_jump_table_net(const char *key, const char *value,
5384 struct lxc_conf *lxc_conf, void *data)
40db5d2f 5385{
7707b0e0
CB		 5386 struct config_net_info info = {};
5387 int ret;
31ee747b 5388 const char *idxstring;
31ee747b 5389
0abcc213 5390 idxstring = key + STRLITERALLEN("lxc.net.");
31ee747b 5391 if (!isdigit(*idxstring))
d5c2cd94 5392 return ret_errno(EINVAL);
40db5d2f 5393
6bed0fb6 5394 if (lxc_config_value_empty(value))
7707b0e0 5395 return clr_config_jump_table_net(key, lxc_conf, data);
40db5d2f 5396
7707b0e0
CB		 5397 ret = get_network_config_ops(key, lxc_conf, &info, true);
5398 if (ret)
5399 return ret;
47903908 5400
7707b0e0 5401 return info.ops->set(info.subkey, value, lxc_conf, info.netdev);
40db5d2f 5402}
ff6da295 5403
7707b0e0
CB		 5404static int clr_config_jump_table_net(const char *key, struct lxc_conf *lxc_conf,
5405 void *data)
ff6da295 5406{
7707b0e0 5407 struct config_net_info info = {};
31ee747b 5408 int ret;
519df1c1 5409 const char *idxstring;
519df1c1 5410
31ee747b
CB		 5411 idxstring = key + 8;
5412 if (!isdigit(*idxstring))
ec35c656 5413 return ret_errno(EINVAL);
519df1c1 5414
519df1c1 5415 /* The left conjunct is pretty self-explanatory. The right conjunct
31ee747b 5416 * checks whether the two pointers are equal. If they are we know that
519df1c1
CB		 5417 * this is not a key that is namespaced any further and so we are
5418 * supposed to clear the whole network.
5419 */
5420 if (isdigit(*idxstring) && (strrchr(key, '.') == (idxstring - 1))) {
5421 unsigned int rmnetdevidx;
5422
ec35c656
CB		 5423 ret = lxc_safe_uint(idxstring, &rmnetdevidx);
5424 if (ret < 0)
5425 return ret;
519df1c1
CB		 5426
5427 /* Remove network from network list. */
5428 lxc_remove_nic_by_idx(lxc_conf, rmnetdevidx);
5429 return 0;
5430 }
ff6da295 5431
7707b0e0
CB		 5432 ret = get_network_config_ops(key, lxc_conf, &info, false);
5433 if (ret)
5434 return ret;
47903908 5435
7707b0e0 5436 return info.ops->clr(info.subkey, lxc_conf, info.netdev);
ff6da295
CB		 5437}
5438
f9373e40
CB		 5439static int clr_config_net_type(const char *key, struct lxc_conf *lxc_conf,
5440 void *data)
ff6da295 5441{
070a05af 5442 struct lxc_netdev *netdev = data;
ff6da295 5443
ff6da295 5444 if (!netdev)
ee52bb2f 5445 return ret_errno(EINVAL);
ff6da295 5446
8d508eaa 5447 lxc_clear_netdev(netdev);
ff6da295
CB		 5448
5449 return 0;
5450}
5451
f9373e40
CB		 5452static int clr_config_net_name(const char *key, struct lxc_conf *lxc_conf,
5453 void *data)
ff6da295 5454{
070a05af 5455 struct lxc_netdev *netdev = data;
ff6da295 5456
ff6da295 5457 if (!netdev)
24a28704 5458 return ret_errno(EINVAL);
ff6da295 5459
de4855a8 5460 netdev->name[0] = '\0';
ff6da295
CB		 5461
5462 return 0;
5463}
5464
f9373e40
CB		 5465static int clr_config_net_flags(const char *key, struct lxc_conf *lxc_conf,
5466 void *data)
ff6da295 5467{
070a05af 5468 struct lxc_netdev *netdev = data;
ff6da295 5469
ff6da295 5470 if (!netdev)
a1ff93c9 5471 return ret_errno(EINVAL);
ff6da295
CB		 5472
5473 netdev->flags = 0;
5474
5475 return 0;
5476}
5477
f9373e40
CB		 5478static int clr_config_net_link(const char *key, struct lxc_conf *lxc_conf,
5479 void *data)
ff6da295 5480{
070a05af 5481 struct lxc_netdev *netdev = data;
ff6da295 5482
ff6da295 5483 if (!netdev)
08146143 5484 return ret_errno(EINVAL);
ff6da295 5485
de4855a8 5486 netdev->link[0] = '\0';
ff6da295
CB		 5487
5488 return 0;
5489}
5490
6509154d 5491static int clr_config_net_l2proxy(const char *key, struct lxc_conf *lxc_conf,
5492 void *data)
5493{
5494 struct lxc_netdev *netdev = data;
5495
5496 if (!netdev)
0171e2a9 5497 return ret_errno(EINVAL);
6509154d 5498
5499 netdev->l2proxy = false;
5500
5501 return 0;
5502}
5503
f9373e40
CB		 5504static int clr_config_net_macvlan_mode(const char *key,
5505 struct lxc_conf *lxc_conf, void *data)
ff6da295 5506{
070a05af 5507 struct lxc_netdev *netdev = data;
ff6da295 5508
ff6da295 5509 if (!netdev)
a0ea16c5 5510 return ret_errno(EINVAL);
ff6da295 5511
6bed0fb6
CB		 5512 if (netdev->type != LXC_NET_MACVLAN)
5513 return 0;
5514
ff6da295
CB		 5515 netdev->priv.macvlan_attr.mode = -1;
5516
5517 return 0;
5518}
5519
c9f52382 5520static int clr_config_net_ipvlan_mode(const char *key,
5521 struct lxc_conf *lxc_conf, void *data)
5522{
5523 struct lxc_netdev *netdev = data;
5524
5525 if (!netdev)
6288bd57 5526 return ret_errno(EINVAL);
c9f52382 5527
5528 if (netdev->type != LXC_NET_IPVLAN)
5529 return 0;
5530
5531 netdev->priv.ipvlan_attr.mode = -1;
5532
5533 return 0;
5534}
5535
5536static int clr_config_net_ipvlan_isolation(const char *key,
299ddd16 5537 struct lxc_conf *lxc_conf, void *data)
c9f52382 5538{
5539 struct lxc_netdev *netdev = data;
5540
5541 if (!netdev)
ce79ece8 5542 return ret_errno(EINVAL);
c9f52382 5543
5544 if (netdev->type != LXC_NET_IPVLAN)
5545 return 0;
5546
5547 netdev->priv.ipvlan_attr.isolation = -1;
5548
5549 return 0;
5550}
5551
3f0ed090
TP		 5552static int clr_config_net_veth_mode(const char *key,
5553 struct lxc_conf *lxc_conf, void *data)
5554{
5555 struct lxc_netdev *netdev = data;
5556
5557 if (!netdev)
7b39759d 5558 return ret_errno(EINVAL);
3f0ed090
TP		 5559
5560 if (netdev->type != LXC_NET_VETH)
5561 return 0;
5562
5563 netdev->priv.veth_attr.mode = -1;
5564
5565 return 0;
5566}
5567
f9373e40
CB		 5568static int clr_config_net_veth_pair(const char *key, struct lxc_conf *lxc_conf,
5569 void *data)
ff6da295 5570{
070a05af 5571 struct lxc_netdev *netdev = data;
ff6da295 5572
ff6da295 5573 if (!netdev)
a69a835e 5574 return ret_errno(EINVAL);
ff6da295 5575
299ddd16
CB		 5576 if (netdev->type != LXC_NET_VETH)
5577 return 0;
5578
de4855a8 5579 netdev->priv.veth_attr.pair[0] = '\0';
ff6da295
CB		 5580
5581 return 0;
5582}
5583
fdf76c6d
TP		 5584static int clr_config_net_veth_vlan_id(const char *key, struct lxc_conf *lxc_conf,
5585 void *data)
5586{
5587 struct lxc_netdev *netdev = data;
5588
5589 if (!netdev)
5590 return ret_errno(EINVAL);
5591
299ddd16
CB		 5592 if (netdev->type != LXC_NET_VETH)
5593 return 0;
5594
fdf76c6d
TP		 5595 netdev->priv.veth_attr.vlan_id = 0;
5596 netdev->priv.veth_attr.vlan_id_set = false;
5597
5598 return 0;
5599}
5600
b8e06d33
TP		 5601static int clr_config_net_veth_vlan_tagged_id(const char *key,
5602 struct lxc_conf *lxc_conf, void *data)
5603{
5604 struct lxc_netdev *netdev = data;
5605 struct lxc_list *cur, *next;
5606
5607 if (!netdev)
5608 return ret_errno(EINVAL);
5609
299ddd16
CB		 5610 if (netdev->type != LXC_NET_VETH)
5611 return 0;
5612
b8e06d33
TP		 5613 lxc_list_for_each_safe(cur, &netdev->priv.veth_attr.vlan_tagged_ids, next) {
5614 lxc_list_del(cur);
5615 free(cur);
5616 }
5617
5618 return 0;
5619}
5620
5621
f9373e40
CB		 5622static int clr_config_net_script_up(const char *key, struct lxc_conf *lxc_conf,
5623 void *data)
ff6da295 5624{
070a05af 5625 struct lxc_netdev *netdev = data;
ff6da295 5626
ff6da295 5627 if (!netdev)
9e1608ec 5628 return ret_errno(EINVAL);
ff6da295 5629
9e1608ec 5630 free_disarm(netdev->upscript);
ff6da295
CB		 5631
5632 return 0;
5633}
5634
f9373e40
CB		 5635static int clr_config_net_script_down(const char *key,
5636 struct lxc_conf *lxc_conf, void *data)
ff6da295 5637{
070a05af 5638 struct lxc_netdev *netdev = data;
ff6da295 5639
ff6da295 5640 if (!netdev)
25dea1a3 5641 return ret_errno(EINVAL);
ff6da295 5642
25dea1a3 5643 free_disarm(netdev->downscript);
ff6da295
CB		 5644
5645 return 0;
5646}
5647
f9373e40
CB		 5648static int clr_config_net_hwaddr(const char *key, struct lxc_conf *lxc_conf,
5649 void *data)
ff6da295 5650{
070a05af 5651 struct lxc_netdev *netdev = data;
ff6da295 5652
ff6da295 5653 if (!netdev)
afa97df5 5654 return ret_errno(EINVAL);
ff6da295 5655
afa97df5 5656 free_disarm(netdev->hwaddr);
ff6da295
CB		 5657
5658 return 0;
5659}
5660
f9373e40
CB		 5661static int clr_config_net_mtu(const char *key, struct lxc_conf *lxc_conf,
5662 void *data)
ff6da295 5663{
070a05af 5664 struct lxc_netdev *netdev = data;
ff6da295 5665
ff6da295 5666 if (!netdev)
18bab943 5667 return ret_errno(EINVAL);
ff6da295 5668
18bab943 5669 free_disarm(netdev->mtu);
ff6da295
CB		 5670
5671 return 0;
5672}
5673
f9373e40
CB		 5674static int clr_config_net_vlan_id(const char *key, struct lxc_conf *lxc_conf,
5675 void *data)
ff6da295 5676{
070a05af 5677 struct lxc_netdev *netdev = data;
ff6da295 5678
ff6da295 5679 if (!netdev)
2c76b1ba 5680 return ret_errno(EINVAL);
ff6da295 5681
299ddd16
CB		 5682 if (netdev->type != LXC_NET_VLAN)
5683 return 0;
5684
ff6da295
CB		 5685 netdev->priv.vlan_attr.vid = 0;
5686
5687 return 0;
5688}
5689
f9373e40
CB		 5690static int clr_config_net_ipv4_gateway(const char *key,
5691 struct lxc_conf *lxc_conf, void *data)
ff6da295 5692{
070a05af 5693 struct lxc_netdev *netdev = data;
ff6da295 5694
ff6da295 5695 if (!netdev)
69a91fd3 5696 return ret_errno(EINVAL);
ff6da295 5697
69a91fd3 5698 free_disarm(netdev->ipv4_gateway);
ff6da295
CB		 5699
5700 return 0;
5701}
5702
9ff60df2
CB		 5703static int clr_config_net_ipv4_address(const char *key,
5704 struct lxc_conf *lxc_conf, void *data)
ff6da295 5705{
070a05af 5706 struct lxc_netdev *netdev = data;
ff6da295
CB		 5707 struct lxc_list *cur, *next;
5708
ecbb3790 5709 if (!netdev)
54148d69 5710 return ret_errno(EINVAL);
ff6da295
CB		 5711
5712 lxc_list_for_each_safe(cur, &netdev->ipv4, next) {
5713 lxc_list_del(cur);
5714 free(cur->elem);
5715 free(cur);
5716 }
5717
5718 return 0;
5719}
5720
d4a7da46 5721static int clr_config_net_veth_ipv4_route(const char *key,
6340f28f 5722 struct lxc_conf *lxc_conf, void *data)
d4a7da46 5723{
5724 struct lxc_netdev *netdev = data;
5725 struct lxc_list *cur, *next;
5726
5727 if (!netdev)
6340f28f 5728 return ret_errno(EINVAL);
d4a7da46 5729
299ddd16
CB		 5730 if (netdev->type != LXC_NET_VETH)
5731 return 0;
5732
d4a7da46 5733 lxc_list_for_each_safe(cur, &netdev->priv.veth_attr.ipv4_routes, next) {
5734 lxc_list_del(cur);
5735 free(cur->elem);
5736 free(cur);
5737 }
5738
5739 return 0;
5740}
5741
f9373e40
CB		 5742static int clr_config_net_ipv6_gateway(const char *key,
5743 struct lxc_conf *lxc_conf, void *data)
ff6da295 5744{
070a05af 5745 struct lxc_netdev *netdev = data;
ff6da295 5746
ff6da295 5747 if (!netdev)
20959044 5748 return ret_errno(EINVAL);
ff6da295 5749
20959044 5750 free_disarm(netdev->ipv6_gateway);
ff6da295
CB		 5751
5752 return 0;
5753}
5754
2e44ae28
CB		 5755static int clr_config_net_ipv6_address(const char *key,
5756 struct lxc_conf *lxc_conf, void *data)
ff6da295 5757{
070a05af 5758 struct lxc_netdev *netdev = data;
ff6da295
CB		 5759 struct lxc_list *cur, *next;
5760
ecbb3790 5761 if (!netdev)
2b592308 5762 return ret_errno(EINVAL);
ff6da295
CB		 5763
5764 lxc_list_for_each_safe(cur, &netdev->ipv6, next) {
5765 lxc_list_del(cur);
5766 free(cur->elem);
5767 free(cur);
5768 }
5769
5770 return 0;
5771}
9d4bf22d 5772
d4a7da46 5773static int clr_config_net_veth_ipv6_route(const char *key,
b67488ec 5774 struct lxc_conf *lxc_conf, void *data)
d4a7da46 5775{
5776 struct lxc_netdev *netdev = data;
5777 struct lxc_list *cur, *next;
5778
5779 if (!netdev)
b67488ec 5780 return ret_errno(EINVAL);
d4a7da46 5781
299ddd16
CB		 5782 if (netdev->type != LXC_NET_VETH)
5783 return 0;
5784
d4a7da46 5785 lxc_list_for_each_safe(cur, &netdev->priv.veth_attr.ipv6_routes, next) {
5786 lxc_list_del(cur);
5787 free(cur->elem);
5788 free(cur);
5789 }
5790
5791 return 0;
5792}
5793
7707b0e0
CB		 5794static int get_config_jump_table_net(const char *key, char *retv, int inlen,
5795 struct lxc_conf *c, void *data)
9d4bf22d 5796{
7707b0e0
CB		 5797 struct config_net_info info = {};
5798 int ret;
31ee747b 5799 const char *idxstring;
9d4bf22d 5800
0abcc213 5801 idxstring = key + STRLITERALLEN("lxc.net.");
31ee747b 5802 if (!isdigit(*idxstring))
05a9b967 5803 return ret_errno(EINVAL);
31ee747b 5804
7707b0e0
CB		 5805 ret = get_network_config_ops(key, c, &info, false);
5806 if (ret)
5807 return ret;
47903908 5808
7707b0e0 5809 return info.ops->get(info.subkey, retv, inlen, c, info.netdev);
9d4bf22d
CB		 5810}
5811
f9373e40
CB		 5812static int get_config_net_type(const char *key, char *retv, int inlen,
5813 struct lxc_conf *c, void *data)
9d4bf22d 5814{
070a05af
CB		 5815 int len;
5816 int fulllen = 0;
5817 struct lxc_netdev *netdev = data;
9d4bf22d 5818
299ddd16
CB		 5819 if (!netdev)
5820 return ret_errno(EINVAL);
5821
9d4bf22d
CB		 5822 if (!retv)
5823 inlen = 0;
5824 else
5825 memset(retv, 0, inlen);
5826
9d4bf22d
CB		 5827 strprint(retv, inlen, "%s", lxc_net_type_to_str(netdev->type));
5828
5829 return fulllen;
5830}
5831
f9373e40
CB		 5832static int get_config_net_flags(const char *key, char *retv, int inlen,
5833 struct lxc_conf *c, void *data)
9d4bf22d 5834{
070a05af
CB		 5835 int len;
5836 int fulllen = 0;
5837 struct lxc_netdev *netdev = data;
9d4bf22d 5838
299ddd16
CB		 5839 if (!netdev)
5840 return ret_errno(EINVAL);
5841
9d4bf22d
CB		 5842 if (!retv)
5843 inlen = 0;
5844 else
5845 memset(retv, 0, inlen);
5846
9d4bf22d
CB		 5847 if (netdev->flags & IFF_UP)
5848 strprint(retv, inlen, "up");
5849
5850 return fulllen;
5851}
5852
f9373e40
CB		 5853static int get_config_net_link(const char *key, char *retv, int inlen,
5854 struct lxc_conf *c, void *data)
9d4bf22d 5855{
070a05af
CB		 5856 int len;
5857 int fulllen = 0;
5858 struct lxc_netdev *netdev = data;
9d4bf22d 5859
299ddd16
CB		 5860 if (!netdev)
5861 return ret_errno(EINVAL);
5862
9d4bf22d
CB		 5863 if (!retv)
5864 inlen = 0;
5865 else
5866 memset(retv, 0, inlen);
5867
de4855a8 5868 if (netdev->link[0] != '\0')
9d4bf22d
CB		 5869 strprint(retv, inlen, "%s", netdev->link);
5870
5871 return fulllen;
5872}
5873
6509154d 5874static int get_config_net_l2proxy(const char *key, char *retv, int inlen,
5cd78f55 5875 struct lxc_conf *c, void *data)
6509154d 5876{
5877 struct lxc_netdev *netdev = data;
299ddd16
CB		 5878
5879 if (!netdev)
5880 return ret_errno(EINVAL);
5881
6509154d 5882 return lxc_get_conf_bool(c, retv, inlen, netdev->l2proxy);
5883}
5884
f9373e40
CB		 5885static int get_config_net_name(const char *key, char *retv, int inlen,
5886 struct lxc_conf *c, void *data)
9d4bf22d 5887{
070a05af
CB		 5888 int len;
5889 int fulllen = 0;
5890 struct lxc_netdev *netdev = data;
9d4bf22d 5891
299ddd16
CB		 5892 if (!netdev)
5893 return ret_errno(EINVAL);
5894
9d4bf22d
CB		 5895 if (!retv)
5896 inlen = 0;
5897 else
5898 memset(retv, 0, inlen);
5899
de4855a8 5900 if (netdev->name[0] != '\0')
9d4bf22d
CB		 5901 strprint(retv, inlen, "%s", netdev->name);
5902
5903 return fulllen;
5904}
5905
f9373e40
CB		 5906static int get_config_net_macvlan_mode(const char *key, char *retv, int inlen,
5907 struct lxc_conf *c, void *data)
9d4bf22d 5908{
070a05af
CB		 5909 int len;
5910 int fulllen = 0;
9d4bf22d 5911 const char *mode;
070a05af 5912 struct lxc_netdev *netdev = data;
9d4bf22d 5913
9d4bf22d 5914 if (!netdev)
3d72edbe 5915 return ret_errno(EINVAL);
9d4bf22d
CB		 5916
5917 if (netdev->type != LXC_NET_MACVLAN)
299ddd16
CB		 5918 return ret_errno(EINVAL);
5919
5920 if (!retv)
5921 inlen = 0;
5922 else
5923 memset(retv, 0, inlen);
9d4bf22d
CB		 5924
5925 switch (netdev->priv.macvlan_attr.mode) {
5926 case MACVLAN_MODE_PRIVATE:
5927 mode = "private";
5928 break;
5929 case MACVLAN_MODE_VEPA:
5930 mode = "vepa";
5931 break;
5932 case MACVLAN_MODE_BRIDGE:
5933 mode = "bridge";
5934 break;
5935 case MACVLAN_MODE_PASSTHRU:
5936 mode = "passthru";
5937 break;
5938 default:
5939 mode = "(invalid)";
5940 break;
5941 }
5942
5943 strprint(retv, inlen, "%s", mode);
5944
5945 return fulllen;
5946}
5947
c9f52382 5948static int get_config_net_ipvlan_mode(const char *key, char *retv, int inlen,
5949 struct lxc_conf *c, void *data)
5950{
c9f52382 5951 int fulllen = 0;
c9f52382 5952 struct lxc_netdev *netdev = data;
dff2db42
CB		 5953 int len;
5954 const char *mode;
c9f52382 5955
c9f52382 5956 if (!netdev)
dff2db42 5957 return ret_errno(EINVAL);
c9f52382 5958
5959 if (netdev->type != LXC_NET_IPVLAN)
299ddd16
CB		 5960 return ret_errno(EINVAL);
5961
5962 if (!retv)
5963 inlen = 0;
5964 else
5965 memset(retv, 0, inlen);
c9f52382 5966
5967 switch (netdev->priv.ipvlan_attr.mode) {
5968 case IPVLAN_MODE_L3:
5969 mode = "l3";
5970 break;
5971 case IPVLAN_MODE_L3S:
5972 mode = "l3s";
5973 break;
5974 case IPVLAN_MODE_L2:
5975 mode = "l2";
5976 break;
5977 default:
5978 mode = "(invalid)";
5979 break;
5980 }
5981
5982 strprint(retv, inlen, "%s", mode);
5983
5984 return fulllen;
5985}
5986
5987static int get_config_net_ipvlan_isolation(const char *key, char *retv, int inlen,
5988 struct lxc_conf *c, void *data)
5989{
c9f52382 5990 int fulllen = 0;
c9f52382 5991 struct lxc_netdev *netdev = data;
56ce6747
CB		 5992 int len;
5993 const char *mode;
c9f52382 5994
c9f52382 5995 if (!netdev)
56ce6747 5996 return ret_errno(EINVAL);
c9f52382 5997
5998 if (netdev->type != LXC_NET_IPVLAN)
299ddd16
CB		 5999 return ret_errno(EINVAL);
6000
6001 if (!retv)
6002 inlen = 0;
6003 else
6004 memset(retv, 0, inlen);
c9f52382 6005
6006 switch (netdev->priv.ipvlan_attr.isolation) {
6007 case IPVLAN_ISOLATION_BRIDGE:
6008 mode = "bridge";
6009 break;
6010 case IPVLAN_ISOLATION_PRIVATE:
6011 mode = "private";
6012 break;
6013 case IPVLAN_ISOLATION_VEPA:
6014 mode = "vepa";
6015 break;
6016 default:
6017 mode = "(invalid)";
6018 break;
6019 }
6020
6021 strprint(retv, inlen, "%s", mode);
6022
6023 return fulllen;
6024}
6025
3f0ed090 6026static int get_config_net_veth_mode(const char *key, char *retv, int inlen,
299ddd16 6027 struct lxc_conf *c, void *data)
3f0ed090 6028{
3f0ed090 6029 int fulllen = 0;
3f0ed090 6030 struct lxc_netdev *netdev = data;
7d6ccf8c
CB		 6031 int len;
6032 const char *mode;
3f0ed090 6033
3f0ed090 6034 if (!netdev)
7d6ccf8c 6035 return ret_errno(EINVAL);
3f0ed090
TP		 6036
6037 if (netdev->type != LXC_NET_VETH)
299ddd16
CB		 6038 return ret_errno(EINVAL);
6039
6040 if (!retv)
6041 inlen = 0;
6042 else
6043 memset(retv, 0, inlen);
3f0ed090
TP		 6044
6045 switch (netdev->priv.veth_attr.mode) {
6046 case VETH_MODE_BRIDGE:
6047 mode = "bridge";
6048 break;
6049 case VETH_MODE_ROUTER:
6050 mode = "router";
6051 break;
6052 default:
6053 mode = "(invalid)";
6054 break;
6055 }
6056
6057 strprint(retv, inlen, "%s", mode);
6058
6059 return fulllen;
6060}
6061
f9373e40
CB		 6062static int get_config_net_veth_pair(const char *key, char *retv, int inlen,
6063 struct lxc_conf *c, void *data)
9d4bf22d 6064{
070a05af
CB		 6065 int len;
6066 int fulllen = 0;
6067 struct lxc_netdev *netdev = data;
9d4bf22d 6068
9d4bf22d 6069 if (!netdev)
9e86b442 6070 return ret_errno(EINVAL);
9d4bf22d
CB		 6071
6072 if (netdev->type != LXC_NET_VETH)
299ddd16
CB		 6073 return ret_errno(EINVAL);
6074
6075 if (!retv)
6076 inlen = 0;
6077 else
6078 memset(retv, 0, inlen);
9d4bf22d
CB		 6079
6080 strprint(retv, inlen, "%s",
de4855a8
CB		 6081 netdev->priv.veth_attr.pair[0] != '\0'
6082 ? netdev->priv.veth_attr.pair
6083 : netdev->priv.veth_attr.veth1);
9d4bf22d
CB		 6084
6085 return fulllen;
6086}
6087
fdf76c6d 6088static int get_config_net_veth_vlan_id(const char *key, char *retv, int inlen,
a90dc552 6089 struct lxc_conf *c, void *data)
fdf76c6d
TP		 6090{
6091 int len;
6092 int fulllen = 0;
6093 struct lxc_netdev *netdev = data;
6094
6095 if (!netdev)
6096 return ret_errno(EINVAL);
6097
6098 if (netdev->type != LXC_NET_VETH)
299ddd16 6099 return ret_errno(EINVAL);
fdf76c6d
TP		 6100
6101 if (!retv)
6102 inlen = 0;
6103 else
6104 memset(retv, 0, inlen);
6105
6106 strprint(retv, inlen, "%d", netdev->priv.veth_attr.vlan_id);
6107
6108 return fulllen;
6109}
6110
299ddd16
CB		 6111static int get_config_net_veth_vlan_tagged_id(const char *key, char *retv,
6112 int inlen, struct lxc_conf *c,
6113 void *data)
b8e06d33
TP		 6114{
6115 int len;
6116 size_t listlen;
6117 struct lxc_list *it;
6118 int fulllen = 0;
6119 struct lxc_netdev *netdev = data;
6120
6121 if (!netdev)
4e61b19d 6122 return ret_errno(EINVAL);
b8e06d33
TP		 6123
6124 if (netdev->type != LXC_NET_VETH)
299ddd16 6125 return ret_errno(EINVAL);
b8e06d33
TP		 6126
6127 if (!retv)
6128 inlen = 0;
6129 else
6130 memset(retv, 0, inlen);
6131
6132 listlen = lxc_list_len(&netdev->priv.veth_attr.vlan_tagged_ids);
6133
6134 lxc_list_for_each(it, &netdev->priv.veth_attr.vlan_tagged_ids) {
6135 unsigned short i = PTR_TO_USHORT(it->elem);
299ddd16 6136 strprint(retv, inlen, "%u%s", i, (listlen-- > 1) ? "\n" : "");
b8e06d33
TP		 6137 }
6138
6139 return fulllen;
6140}
6141
f9373e40
CB		 6142static int get_config_net_script_up(const char *key, char *retv, int inlen,
6143 struct lxc_conf *c, void *data)
9d4bf22d 6144{
070a05af
CB		 6145 int len;
6146 int fulllen = 0;
6147 struct lxc_netdev *netdev = data;
9d4bf22d 6148
299ddd16
CB		 6149 if (!netdev)
6150 return ret_errno(EINVAL);
6151
9d4bf22d
CB		 6152 if (!retv)
6153 inlen = 0;
6154 else
6155 memset(retv, 0, inlen);
6156
9d4bf22d
CB		 6157 if (netdev->upscript)
6158 strprint(retv, inlen, "%s", netdev->upscript);
6159
6160 return fulllen;
6161}
6162
f9373e40
CB		 6163static int get_config_net_script_down(const char *key, char *retv, int inlen,
6164 struct lxc_conf *c, void *data)
9d4bf22d 6165{
070a05af
CB		 6166 int len;
6167 int fulllen = 0;
6168 struct lxc_netdev *netdev = data;
9d4bf22d 6169
299ddd16
CB		 6170 if (!netdev)
6171 return ret_errno(EINVAL);
6172
9d4bf22d
CB		 6173 if (!retv)
6174 inlen = 0;
6175 else
6176 memset(retv, 0, inlen);
6177
9d4bf22d
CB		 6178 if (netdev->downscript)
6179 strprint(retv, inlen, "%s", netdev->downscript);
6180
6181 return fulllen;
6182}
6183
f9373e40
CB		 6184static int get_config_net_hwaddr(const char *key, char *retv, int inlen,
6185 struct lxc_conf *c, void *data)
9d4bf22d 6186{
070a05af
CB		 6187 int len;
6188 int fulllen = 0;
6189 struct lxc_netdev *netdev = data;
9d4bf22d 6190
299ddd16
CB		 6191 if (!netdev)
6192 return ret_errno(EINVAL);
6193
9d4bf22d
CB		 6194 if (!retv)
6195 inlen = 0;
6196 else
6197 memset(retv, 0, inlen);
6198
9d4bf22d
CB		 6199 if (netdev->hwaddr)
6200 strprint(retv, inlen, "%s", netdev->hwaddr);
6201
6202 return fulllen;
6203}
6204
f9373e40
CB		 6205static int get_config_net_mtu(const char *key, char *retv, int inlen,
6206 struct lxc_conf *c, void *data)
9d4bf22d 6207{
070a05af
CB		 6208 int len;
6209 int fulllen = 0;
6210 struct lxc_netdev *netdev = data;
9d4bf22d 6211
299ddd16
CB		 6212 if (!netdev)
6213 return ret_errno(EINVAL);
6214
9d4bf22d
CB		 6215 if (!retv)
6216 inlen = 0;
6217 else
6218 memset(retv, 0, inlen);
6219
9d4bf22d
CB		 6220 if (netdev->mtu)
6221 strprint(retv, inlen, "%s", netdev->mtu);
6222
6223 return fulllen;
6224}
6225
f9373e40
CB		 6226static int get_config_net_vlan_id(const char *key, char *retv, int inlen,
6227 struct lxc_conf *c, void *data)
9d4bf22d 6228{
070a05af
CB		 6229 int len;
6230 int fulllen = 0;
6231 struct lxc_netdev *netdev = data;
9d4bf22d 6232
9d4bf22d 6233 if (!netdev)
5b2a5509 6234 return ret_errno(EINVAL);
9d4bf22d
CB		 6235
6236 if (netdev->type != LXC_NET_VLAN)
299ddd16
CB		 6237 return ret_errno(EINVAL);
6238
6239 if (!retv)
6240 inlen = 0;
6241 else
6242 memset(retv, 0, inlen);
9d4bf22d
CB		 6243
6244 strprint(retv, inlen, "%d", netdev->priv.vlan_attr.vid);
6245
6246 return fulllen;
6247}
6248
f9373e40
CB		 6249static int get_config_net_ipv4_gateway(const char *key, char *retv, int inlen,
6250 struct lxc_conf *c, void *data)
9d4bf22d 6251{
070a05af 6252 int len;
9d4bf22d 6253 char buf[INET_ADDRSTRLEN];
070a05af
CB		 6254 int fulllen = 0;
6255 struct lxc_netdev *netdev = data;
9d4bf22d 6256
299ddd16
CB		 6257 if (!netdev)
6258 return ret_errno(EINVAL);
6259
9d4bf22d
CB		 6260 if (!retv)
6261 inlen = 0;
6262 else
6263 memset(retv, 0, inlen);
6264
9d4bf22d
CB		 6265 if (netdev->ipv4_gateway_auto) {
6266 strprint(retv, inlen, "auto");
a2f9a670 6267 } else if (netdev->ipv4_gateway_dev) {
6268 strprint(retv, inlen, "dev");
9d4bf22d 6269 } else if (netdev->ipv4_gateway) {
f203e57c
CB		 6270 if (!inet_ntop(AF_INET, netdev->ipv4_gateway, buf, sizeof(buf)))
6271 return -errno;
9d4bf22d
CB		 6272 strprint(retv, inlen, "%s", buf);
6273 }
6274
6275 return fulllen;
6276}
6277
9ff60df2
CB		 6278static int get_config_net_ipv4_address(const char *key, char *retv, int inlen,
6279 struct lxc_conf *c, void *data)
9d4bf22d 6280{
070a05af 6281 int len;
9d4bf22d
CB		 6282 size_t listlen;
6283 char buf[INET_ADDRSTRLEN];
9d4bf22d 6284 struct lxc_list *it;
070a05af
CB		 6285 int fulllen = 0;
6286 struct lxc_netdev *netdev = data;
9d4bf22d 6287
299ddd16
CB		 6288 if (!netdev)
6289 return ret_errno(EINVAL);
6290
9d4bf22d
CB		 6291 if (!retv)
6292 inlen = 0;
6293 else
6294 memset(retv, 0, inlen);
6295
9d4bf22d 6296 listlen = lxc_list_len(&netdev->ipv4);
47903908 6297
9d4bf22d
CB		 6298 lxc_list_for_each(it, &netdev->ipv4) {
6299 struct lxc_inetdev *i = it->elem;
c3410544
CB		 6300 if (!inet_ntop(AF_INET, &i->addr, buf, sizeof(buf)))
6301 return -errno;
6fc7d8b6 6302 strprint(retv, inlen, "%s/%u%s", buf, i->prefix,
9d4bf22d
CB		 6303 (listlen-- > 1) ? "\n" : "");
6304 }
6305
6306 return fulllen;
6307}
6308
d4a7da46 6309static int get_config_net_veth_ipv4_route(const char *key, char *retv, int inlen,
299ddd16 6310 struct lxc_conf *c, void *data)
d4a7da46 6311{
6312 int len;
6313 size_t listlen;
6314 char buf[INET_ADDRSTRLEN];
6315 struct lxc_list *it;
6316 int fulllen = 0;
6317 struct lxc_netdev *netdev = data;
6318
d4a7da46 6319 if (!netdev)
5d4611dc 6320 return ret_errno(EINVAL);
d4a7da46 6321
6322 if (netdev->type != LXC_NET_VETH)
299ddd16
CB		 6323 return ret_errno(EINVAL);
6324
6325 if (!retv)
6326 inlen = 0;
6327 else
6328 memset(retv, 0, inlen);
d4a7da46 6329
6330 listlen = lxc_list_len(&netdev->priv.veth_attr.ipv4_routes);
6331
6332 lxc_list_for_each(it, &netdev->priv.veth_attr.ipv4_routes) {
6333 struct lxc_inetdev *i = it->elem;
5d4611dc
CB		 6334 if (!inet_ntop(AF_INET, &i->addr, buf, sizeof(buf)))
6335 return -errno;
d4a7da46 6336 strprint(retv, inlen, "%s/%u%s", buf, i->prefix,
6337 (listlen-- > 1) ? "\n" : "");
6338 }
6339
6340 return fulllen;
6341}
6342
f9373e40
CB		 6343static int get_config_net_ipv6_gateway(const char *key, char *retv, int inlen,
6344 struct lxc_conf *c, void *data)
9d4bf22d 6345{
070a05af 6346 int len;
9d4bf22d 6347 char buf[INET6_ADDRSTRLEN];
070a05af
CB		 6348 int fulllen = 0;
6349 struct lxc_netdev *netdev = data;
9d4bf22d 6350
299ddd16
CB		 6351 if (!netdev)
6352 return ret_errno(EINVAL);
6353
9d4bf22d
CB		 6354 if (!retv)
6355 inlen = 0;
6356 else
6357 memset(retv, 0, inlen);
6358
9d4bf22d
CB		 6359 if (netdev->ipv6_gateway_auto) {
6360 strprint(retv, inlen, "auto");
a2f9a670 6361 } else if (netdev->ipv6_gateway_dev) {
6362 strprint(retv, inlen, "dev");
9d4bf22d 6363 } else if (netdev->ipv6_gateway) {
d8009ed2
CB		 6364 if (!inet_ntop(AF_INET6, netdev->ipv6_gateway, buf, sizeof(buf)))
6365 return -errno;
9d4bf22d
CB		 6366 strprint(retv, inlen, "%s", buf);
6367 }
6368
6369 return fulllen;
6370}
6371
2e44ae28
CB		 6372static int get_config_net_ipv6_address(const char *key, char *retv, int inlen,
6373 struct lxc_conf *c, void *data)
9d4bf22d 6374{
070a05af 6375 int len;
9d4bf22d
CB		 6376 size_t listlen;
6377 char buf[INET6_ADDRSTRLEN];
9d4bf22d 6378 struct lxc_list *it;
070a05af
CB		 6379 int fulllen = 0;
6380 struct lxc_netdev *netdev = data;
9d4bf22d 6381
299ddd16
CB		 6382 if (!netdev)
6383 return ret_errno(EINVAL);
6384
9d4bf22d
CB		 6385 if (!retv)
6386 inlen = 0;
6387 else
6388 memset(retv, 0, inlen);
6389
9d4bf22d 6390 listlen = lxc_list_len(&netdev->ipv6);
47903908 6391
9d4bf22d
CB		 6392 lxc_list_for_each(it, &netdev->ipv6) {
6393 struct lxc_inet6dev *i = it->elem;
396acb62
CB		 6394 if (!inet_ntop(AF_INET6, &i->addr, buf, sizeof(buf)))
6395 return -errno;
6fc7d8b6 6396 strprint(retv, inlen, "%s/%u%s", buf, i->prefix,
9d4bf22d
CB		 6397 (listlen-- > 1) ? "\n" : "");
6398 }
6399
6400 return fulllen;
6401}
cfc67626 6402
d4a7da46 6403static int get_config_net_veth_ipv6_route(const char *key, char *retv, int inlen,
98485389 6404 struct lxc_conf *c, void *data)
d4a7da46 6405{
6406 int len;
6407 size_t listlen;
6408 char buf[INET6_ADDRSTRLEN];
6409 struct lxc_list *it;
6410 int fulllen = 0;
6411 struct lxc_netdev *netdev = data;
6412
d4a7da46 6413 if (!netdev)
98485389 6414 return ret_errno(EINVAL);
d4a7da46 6415
6416 if (netdev->type != LXC_NET_VETH)
299ddd16
CB		 6417 return ret_errno(EINVAL);
6418
6419 if (!retv)
6420 inlen = 0;
6421 else
6422 memset(retv, 0, inlen);
d4a7da46 6423
6424 listlen = lxc_list_len(&netdev->priv.veth_attr.ipv6_routes);
6425
6426 lxc_list_for_each(it, &netdev->priv.veth_attr.ipv6_routes) {
6427 struct lxc_inet6dev *i = it->elem;
98485389
CB		 6428 if (!inet_ntop(AF_INET6, &i->addr, buf, sizeof(buf)))
6429 return -errno;
d4a7da46 6430 strprint(retv, inlen, "%s/%u%s", buf, i->prefix,
6431 (listlen-- > 1) ? "\n" : "");
6432 }
6433
6434 return fulllen;
6435}
6436
cfc67626
CB		 6437int lxc_list_config_items(char *retv, int inlen)
6438{
6439 size_t i;
6440 int len;
6441 int fulllen = 0;
6442
6443 if (!retv)
6444 inlen = 0;
6445 else
6446 memset(retv, 0, inlen);
6447
0abcc213 6448 for (i = 0; i < ARRAY_SIZE(config_jump_table); i++) {
33eb2ec1 6449 char *s = config_jump_table[i].name;
300df83e 6450
cfc67626
CB		 6451 if (s[strlen(s) - 1] == '.')
6452 continue;
300df83e 6453
cfc67626
CB		 6454 strprint(retv, inlen, "%s\n", s);
6455 }
6456
6457 return fulllen;
6458}
a5448c15 6459
fe9b7349
CB		 6460int lxc_list_subkeys(struct lxc_conf *conf, const char *key, char *retv,
6461 int inlen)
6462{
6463 int len;
6464 int fulllen = 0;
6465
6466 if (!retv)
6467 inlen = 0;
6468 else
6469 memset(retv, 0, inlen);
6470
d62177e9 6471 if (strequal(key, "lxc.apparmor")) {
fe9b7349 6472 strprint(retv, inlen, "allow_incomplete\n");
1800f924 6473 strprint(retv, inlen, "allow_nesting\n");
fe9b7349 6474 strprint(retv, inlen, "profile\n");
1800f924 6475 strprint(retv, inlen, "raw\n");
d62177e9 6476 } else if (strequal(key, "lxc.cgroup")) {
dae8c253 6477 strprint(retv, inlen, "dir\n");
d62177e9 6478 } else if (strequal(key, "lxc.selinux")) {
fe9b7349 6479 strprint(retv, inlen, "context\n");
4fef78bc 6480 strprint(retv, inlen, "context.keyring\n");
d62177e9 6481 } else if (strequal(key, "lxc.mount")) {
fe9b7349
CB		 6482 strprint(retv, inlen, "auto\n");
6483 strprint(retv, inlen, "entry\n");
6484 strprint(retv, inlen, "fstab\n");
d62177e9 6485 } else if (strequal(key, "lxc.rootfs")) {
fe9b7349
CB		 6486 strprint(retv, inlen, "mount\n");
6487 strprint(retv, inlen, "options\n");
6488 strprint(retv, inlen, "path\n");
d62177e9 6489 } else if (strequal(key, "lxc.uts")) {
fe9b7349 6490 strprint(retv, inlen, "name\n");
d62177e9 6491 } else if (strequal(key, "lxc.hook")) {
fe9b7349 6492 strprint(retv, inlen, "autodev\n");
63012bdd 6493 strprint(retv, inlen, "autodevtmpfssize\n");
fe9b7349
CB		 6494 strprint(retv, inlen, "clone\n");
6495 strprint(retv, inlen, "destroy\n");
6496 strprint(retv, inlen, "mount\n");
6497 strprint(retv, inlen, "post-stop\n");
6498 strprint(retv, inlen, "pre-mount\n");
6499 strprint(retv, inlen, "pre-start\n");
08dd2805 6500 strprint(retv, inlen, "start-host\n");
fe9b7349
CB		 6501 strprint(retv, inlen, "start\n");
6502 strprint(retv, inlen, "stop\n");
d62177e9 6503 } else if (strequal(key, "lxc.cap")) {
fe9b7349
CB		 6504 strprint(retv, inlen, "drop\n");
6505 strprint(retv, inlen, "keep\n");
d62177e9 6506 } else if (strequal(key, "lxc.console")) {
fe9b7349
CB		 6507 strprint(retv, inlen, "logfile\n");
6508 strprint(retv, inlen, "path\n");
d62177e9 6509 } else if (strequal(key, "lxc.seccomp")) {
fe9b7349 6510 strprint(retv, inlen, "profile\n");
d62177e9 6511 } else if (strequal(key, "lxc.signal")) {
fe9b7349
CB		 6512 strprint(retv, inlen, "halt\n");
6513 strprint(retv, inlen, "reboot\n");
6514 strprint(retv, inlen, "stop\n");
d62177e9 6515 } else if (strequal(key, "lxc.start")) {
fe9b7349
CB		 6516 strprint(retv, inlen, "auto\n");
6517 strprint(retv, inlen, "delay\n");
6518 strprint(retv, inlen, "order\n");
d62177e9 6519 } else if (strequal(key, "lxc.monitor")) {
fe9b7349 6520 strprint(retv, inlen, "unshare\n");
d62177e9 6521 } else if (strequal(key, "lxc.keyring")) {
8f818a84 6522 strprint(retv, inlen, "session\n");
fe9b7349 6523 } else {
efcba3c3 6524 fulllen = ret_errno(EINVAL);
fe9b7349
CB		 6525 }
6526
6527 return fulllen;
6528}
6529
a5448c15
CB		 6530int lxc_list_net(struct lxc_conf *c, const char *key, char *retv, int inlen)
6531{
7707b0e0 6532 struct config_net_info info = {};
a5448c15 6533 struct lxc_netdev *netdev;
7707b0e0
CB		 6534 int len, ret;
6535 const char *idxstring;
a5448c15 6536 int fulllen = 0;
a5448c15 6537
0abcc213 6538 idxstring = key + STRLITERALLEN("lxc.net.");
a5448c15 6539 if (!isdigit(*idxstring))
0abcc213 6540 return ret_errno(EINVAL);
a5448c15 6541
7707b0e0
CB		 6542 ret = get_network_config_ops(key, c, &info, false);
6543 if (ret) {
6544 if (ret != -ENOENT)
6545 return ret_errno(EINVAL);
6546 }
6547 netdev = info.netdev;
a5448c15
CB		 6548
6549 if (!retv)
6550 inlen = 0;
6551 else
6552 memset(retv, 0, inlen);
6553
6554 strprint(retv, inlen, "type\n");
6555 strprint(retv, inlen, "script.up\n");
6556 strprint(retv, inlen, "script.down\n");
47903908 6557
a5448c15
CB		 6558 if (netdev->type != LXC_NET_EMPTY) {
6559 strprint(retv, inlen, "flags\n");
6560 strprint(retv, inlen, "link\n");
6561 strprint(retv, inlen, "name\n");
6562 strprint(retv, inlen, "hwaddr\n");
6563 strprint(retv, inlen, "mtu\n");
6564 strprint(retv, inlen, "ipv6.address\n");
6565 strprint(retv, inlen, "ipv6.gateway\n");
6566 strprint(retv, inlen, "ipv4.address\n");
6567 strprint(retv, inlen, "ipv4.gateway\n");
6568 }
6569
6570 switch (netdev->type) {
6571 case LXC_NET_VETH:
6572 strprint(retv, inlen, "veth.pair\n");
d4a7da46 6573 strprint(retv, inlen, "veth.ipv4.route\n");
6574 strprint(retv, inlen, "veth.ipv6.route\n");
fdf76c6d 6575 strprint(retv, inlen, "veth.vlan.id\n");
a5448c15
CB		 6576 break;
6577 case LXC_NET_MACVLAN:
6578 strprint(retv, inlen, "macvlan.mode\n");
6579 break;
c9f52382 6580 case LXC_NET_IPVLAN:
6581 strprint(retv, inlen, "ipvlan.mode\n");
6582 strprint(retv, inlen, "ipvlan.isolation\n");
6583 break;
a5448c15
CB		 6584 case LXC_NET_VLAN:
6585 strprint(retv, inlen, "vlan.id\n");
6586 break;
6587 case LXC_NET_PHYS:
6588 break;
6589 }
6590
6591 return fulllen;
6592}
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