2 * lxc: linux Container library
3 * (C) Copyright IBM Corp. 2007, 2008
6 * Daniel Lezcano <daniel.lezcano at free.fr>
7 * Serge Hallyn <serge@hallyn.com>
8 * Christian Brauner <christian.brauner@ubuntu.com>
10 * This library is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU Lesser General Public
12 * License as published by the Free Software Foundation; either
13 * version 2.1 of the License, or (at your option) any later version.
15 * This library is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * Lesser General Public License for more details.
20 * You should have received a copy of the GNU Lesser General Public
21 * License along with this library; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
28 #define __STDC_FORMAT_MACROS
29 #include <arpa/inet.h>
36 #include <netinet/in.h>
41 #include <sys/param.h>
43 #include <sys/types.h>
44 #include <sys/utsname.h>
52 #include "confile_utils.h"
53 #include "../include/netns_ifaddrs.h"
55 #include "lxcseccomp.h"
61 #if HAVE_SYS_PERSONALITY_H
62 #include <sys/personality.h>
66 #include "include/strlcpy.h"
70 #include "include/strlcat.h"
73 lxc_log_define(confile
, lxc
);
75 #define lxc_config_define(name) \
76 __hot static int set_config_##name(const char *, const char *, \
77 struct lxc_conf *, void *); \
78 __hot static int get_config_##name(const char *, char *, int, \
79 struct lxc_conf *, void *); \
80 __hot static int clr_config_##name(const char *, struct lxc_conf *, \
83 lxc_config_define(autodev
);
84 lxc_config_define(apparmor_allow_incomplete
);
85 lxc_config_define(apparmor_allow_nesting
);
86 lxc_config_define(apparmor_profile
);
87 lxc_config_define(apparmor_raw
);
88 lxc_config_define(cap_drop
);
89 lxc_config_define(cap_keep
);
90 lxc_config_define(cgroup_controller
);
91 lxc_config_define(cgroup2_controller
);
92 lxc_config_define(cgroup_dir
);
93 lxc_config_define(cgroup_relative
);
94 lxc_config_define(console_buffer_size
);
95 lxc_config_define(console_logfile
);
96 lxc_config_define(console_path
);
97 lxc_config_define(console_rotate
);
98 lxc_config_define(console_size
);
99 lxc_config_define(environment
);
100 lxc_config_define(ephemeral
);
101 lxc_config_define(execute_cmd
);
102 lxc_config_define(group
);
103 lxc_config_define(hooks
);
104 lxc_config_define(hooks_version
);
105 lxc_config_define(idmaps
);
106 lxc_config_define(includefiles
);
107 lxc_config_define(init_cmd
);
108 lxc_config_define(init_cwd
);
109 lxc_config_define(init_gid
);
110 lxc_config_define(init_uid
);
111 lxc_config_define(log_file
);
112 lxc_config_define(log_level
);
113 lxc_config_define(log_syslog
);
114 lxc_config_define(monitor
);
115 lxc_config_define(monitor_signal_pdeath
);
116 lxc_config_define(mount
);
117 lxc_config_define(mount_auto
);
118 lxc_config_define(mount_fstab
);
119 lxc_config_define(namespace_clone
);
120 lxc_config_define(namespace_keep
);
121 lxc_config_define(namespace_share
);
122 lxc_config_define(net
);
123 lxc_config_define(net_flags
);
124 lxc_config_define(net_hwaddr
);
125 lxc_config_define(net_ipv4_address
);
126 lxc_config_define(net_ipv4_gateway
);
127 lxc_config_define(net_ipv6_address
);
128 lxc_config_define(net_ipv6_gateway
);
129 lxc_config_define(net_link
);
130 lxc_config_define(net_macvlan_mode
);
131 lxc_config_define(net_mtu
);
132 lxc_config_define(net_name
);
133 lxc_config_define(net_nic
);
134 lxc_config_define(net_script_down
);
135 lxc_config_define(net_script_up
);
136 lxc_config_define(net_type
);
137 lxc_config_define(net_veth_pair
);
138 lxc_config_define(net_vlan_id
);
139 lxc_config_define(no_new_privs
);
140 lxc_config_define(personality
);
141 lxc_config_define(prlimit
);
142 lxc_config_define(pty_max
);
143 lxc_config_define(rootfs_managed
);
144 lxc_config_define(rootfs_mount
);
145 lxc_config_define(rootfs_options
);
146 lxc_config_define(rootfs_path
);
147 lxc_config_define(seccomp_profile
);
148 lxc_config_define(selinux_context
);
149 lxc_config_define(signal_halt
);
150 lxc_config_define(signal_reboot
);
151 lxc_config_define(signal_stop
);
152 lxc_config_define(start
);
153 lxc_config_define(tty_max
);
154 lxc_config_define(tty_dir
);
155 lxc_config_define(uts_name
);
156 lxc_config_define(sysctl
);
157 lxc_config_define(proc
);
159 static struct lxc_config_t config_jump_table
[] = {
160 { "lxc.arch", set_config_personality
, get_config_personality
, clr_config_personality
, },
161 { "lxc.apparmor.profile", set_config_apparmor_profile
, get_config_apparmor_profile
, clr_config_apparmor_profile
, },
162 { "lxc.apparmor.allow_incomplete", set_config_apparmor_allow_incomplete
, get_config_apparmor_allow_incomplete
, clr_config_apparmor_allow_incomplete
, },
163 { "lxc.apparmor.allow_nesting", set_config_apparmor_allow_nesting
, get_config_apparmor_allow_nesting
, clr_config_apparmor_allow_nesting
, },
164 { "lxc.apparmor.raw", set_config_apparmor_raw
, get_config_apparmor_raw
, clr_config_apparmor_raw
, },
165 { "lxc.autodev", set_config_autodev
, get_config_autodev
, clr_config_autodev
, },
166 { "lxc.cap.drop", set_config_cap_drop
, get_config_cap_drop
, clr_config_cap_drop
, },
167 { "lxc.cap.keep", set_config_cap_keep
, get_config_cap_keep
, clr_config_cap_keep
, },
168 { "lxc.cgroup2", set_config_cgroup2_controller
, get_config_cgroup2_controller
, clr_config_cgroup2_controller
, },
169 { "lxc.cgroup.dir", set_config_cgroup_dir
, get_config_cgroup_dir
, clr_config_cgroup_dir
, },
170 { "lxc.cgroup.relative", set_config_cgroup_relative
, get_config_cgroup_relative
, clr_config_cgroup_relative
, },
171 { "lxc.cgroup", set_config_cgroup_controller
, get_config_cgroup_controller
, clr_config_cgroup_controller
, },
172 { "lxc.console.buffer.size", set_config_console_buffer_size
, get_config_console_buffer_size
, clr_config_console_buffer_size
, },
173 { "lxc.console.logfile", set_config_console_logfile
, get_config_console_logfile
, clr_config_console_logfile
, },
174 { "lxc.console.path", set_config_console_path
, get_config_console_path
, clr_config_console_path
, },
175 { "lxc.console.rotate", set_config_console_rotate
, get_config_console_rotate
, clr_config_console_rotate
, },
176 { "lxc.console.size", set_config_console_size
, get_config_console_size
, clr_config_console_size
, },
177 { "lxc.environment", set_config_environment
, get_config_environment
, clr_config_environment
, },
178 { "lxc.ephemeral", set_config_ephemeral
, get_config_ephemeral
, clr_config_ephemeral
, },
179 { "lxc.execute.cmd", set_config_execute_cmd
, get_config_execute_cmd
, clr_config_execute_cmd
, },
180 { "lxc.group", set_config_group
, get_config_group
, clr_config_group
, },
181 { "lxc.hook.autodev", set_config_hooks
, get_config_hooks
, clr_config_hooks
, },
182 { "lxc.hook.clone", set_config_hooks
, get_config_hooks
, clr_config_hooks
, },
183 { "lxc.hook.destroy", set_config_hooks
, get_config_hooks
, clr_config_hooks
, },
184 { "lxc.hook.mount", set_config_hooks
, get_config_hooks
, clr_config_hooks
, },
185 { "lxc.hook.post-stop", set_config_hooks
, get_config_hooks
, clr_config_hooks
, },
186 { "lxc.hook.pre-mount", set_config_hooks
, get_config_hooks
, clr_config_hooks
, },
187 { "lxc.hook.pre-start", set_config_hooks
, get_config_hooks
, clr_config_hooks
, },
188 { "lxc.hook.start", set_config_hooks
, get_config_hooks
, clr_config_hooks
, },
189 { "lxc.hook.start-host", set_config_hooks
, get_config_hooks
, clr_config_hooks
, },
190 { "lxc.hook.stop", set_config_hooks
, get_config_hooks
, clr_config_hooks
, },
191 { "lxc.hook.version", set_config_hooks_version
, get_config_hooks_version
, clr_config_hooks_version
, },
192 { "lxc.hook", set_config_hooks
, get_config_hooks
, clr_config_hooks
, },
193 { "lxc.idmap", set_config_idmaps
, get_config_idmaps
, clr_config_idmaps
, },
194 { "lxc.include", set_config_includefiles
, get_config_includefiles
, clr_config_includefiles
, },
195 { "lxc.init.cmd", set_config_init_cmd
, get_config_init_cmd
, clr_config_init_cmd
, },
196 { "lxc.init.gid", set_config_init_gid
, get_config_init_gid
, clr_config_init_gid
, },
197 { "lxc.init.uid", set_config_init_uid
, get_config_init_uid
, clr_config_init_uid
, },
198 { "lxc.init.cwd", set_config_init_cwd
, get_config_init_cwd
, clr_config_init_cwd
, },
199 { "lxc.log.file", set_config_log_file
, get_config_log_file
, clr_config_log_file
, },
200 { "lxc.log.level", set_config_log_level
, get_config_log_level
, clr_config_log_level
, },
201 { "lxc.log.syslog", set_config_log_syslog
, get_config_log_syslog
, clr_config_log_syslog
, },
202 { "lxc.monitor.unshare", set_config_monitor
, get_config_monitor
, clr_config_monitor
, },
203 { "lxc.monitor.signal.pdeath", set_config_monitor_signal_pdeath
, get_config_monitor_signal_pdeath
, clr_config_monitor_signal_pdeath
, },
204 { "lxc.mount.auto", set_config_mount_auto
, get_config_mount_auto
, clr_config_mount_auto
, },
205 { "lxc.mount.entry", set_config_mount
, get_config_mount
, clr_config_mount
, },
206 { "lxc.mount.fstab", set_config_mount_fstab
, get_config_mount_fstab
, clr_config_mount_fstab
, },
207 { "lxc.namespace.clone", set_config_namespace_clone
, get_config_namespace_clone
, clr_config_namespace_clone
, },
208 { "lxc.namespace.keep", set_config_namespace_keep
, get_config_namespace_keep
, clr_config_namespace_keep
, },
209 { "lxc.namespace.share", set_config_namespace_share
, get_config_namespace_share
, clr_config_namespace_share
, },
210 { "lxc.net.flags", set_config_net_flags
, get_config_net_flags
, clr_config_net_flags
, },
211 { "lxc.net.hwaddr", set_config_net_hwaddr
, get_config_net_hwaddr
, clr_config_net_hwaddr
, },
212 { "lxc.net.ipv4.address", set_config_net_ipv4_address
, get_config_net_ipv4_address
, clr_config_net_ipv4_address
, },
213 { "lxc.net.ipv4.gateway", set_config_net_ipv4_gateway
, get_config_net_ipv4_gateway
, clr_config_net_ipv4_gateway
, },
214 { "lxc.net.ipv6.address", set_config_net_ipv6_address
, get_config_net_ipv6_address
, clr_config_net_ipv6_address
, },
215 { "lxc.net.ipv6.gateway", set_config_net_ipv6_gateway
, get_config_net_ipv6_gateway
, clr_config_net_ipv6_gateway
, },
216 { "lxc.net.link", set_config_net_link
, get_config_net_link
, clr_config_net_link
, },
217 { "lxc.net.macvlan.mode", set_config_net_macvlan_mode
, get_config_net_macvlan_mode
, clr_config_net_macvlan_mode
, },
218 { "lxc.net.mtu", set_config_net_mtu
, get_config_net_mtu
, clr_config_net_mtu
, },
219 { "lxc.net.name", set_config_net_name
, get_config_net_name
, clr_config_net_name
, },
220 { "lxc.net.script.down", set_config_net_script_down
, get_config_net_script_down
, clr_config_net_script_down
, },
221 { "lxc.net.script.up", set_config_net_script_up
, get_config_net_script_up
, clr_config_net_script_up
, },
222 { "lxc.net.type", set_config_net_type
, get_config_net_type
, clr_config_net_type
, },
223 { "lxc.net.vlan.id", set_config_net_vlan_id
, get_config_net_vlan_id
, clr_config_net_vlan_id
, },
224 { "lxc.net.veth.pair", set_config_net_veth_pair
, get_config_net_veth_pair
, clr_config_net_veth_pair
, },
225 { "lxc.net.", set_config_net_nic
, get_config_net_nic
, clr_config_net_nic
, },
226 { "lxc.net", set_config_net
, get_config_net
, clr_config_net
, },
227 { "lxc.no_new_privs", set_config_no_new_privs
, get_config_no_new_privs
, clr_config_no_new_privs
, },
228 { "lxc.prlimit", set_config_prlimit
, get_config_prlimit
, clr_config_prlimit
, },
229 { "lxc.pty.max", set_config_pty_max
, get_config_pty_max
, clr_config_pty_max
, },
230 { "lxc.rootfs.managed", set_config_rootfs_managed
, get_config_rootfs_managed
, clr_config_rootfs_managed
, },
231 { "lxc.rootfs.mount", set_config_rootfs_mount
, get_config_rootfs_mount
, clr_config_rootfs_mount
, },
232 { "lxc.rootfs.options", set_config_rootfs_options
, get_config_rootfs_options
, clr_config_rootfs_options
, },
233 { "lxc.rootfs.path", set_config_rootfs_path
, get_config_rootfs_path
, clr_config_rootfs_path
, },
234 { "lxc.seccomp.profile", set_config_seccomp_profile
, get_config_seccomp_profile
, clr_config_seccomp_profile
, },
235 { "lxc.selinux.context", set_config_selinux_context
, get_config_selinux_context
, clr_config_selinux_context
, },
236 { "lxc.signal.halt", set_config_signal_halt
, get_config_signal_halt
, clr_config_signal_halt
, },
237 { "lxc.signal.reboot", set_config_signal_reboot
, get_config_signal_reboot
, clr_config_signal_reboot
, },
238 { "lxc.signal.stop", set_config_signal_stop
, get_config_signal_stop
, clr_config_signal_stop
, },
239 { "lxc.start.auto", set_config_start
, get_config_start
, clr_config_start
, },
240 { "lxc.start.delay", set_config_start
, get_config_start
, clr_config_start
, },
241 { "lxc.start.order", set_config_start
, get_config_start
, clr_config_start
, },
242 { "lxc.tty.dir", set_config_tty_dir
, get_config_tty_dir
, clr_config_tty_dir
, },
243 { "lxc.tty.max", set_config_tty_max
, get_config_tty_max
, clr_config_tty_max
, },
244 { "lxc.uts.name", set_config_uts_name
, get_config_uts_name
, clr_config_uts_name
, },
245 { "lxc.sysctl", set_config_sysctl
, get_config_sysctl
, clr_config_sysctl
, },
246 { "lxc.proc", set_config_proc
, get_config_proc
, clr_config_proc
, },
249 static const size_t config_jump_table_size
= sizeof(config_jump_table
) / sizeof(struct lxc_config_t
);
251 struct lxc_config_t
*lxc_get_config(const char *key
)
255 for (i
= 0; i
< config_jump_table_size
; i
++)
256 if (!strncmp(config_jump_table
[i
].name
, key
, strlen(config_jump_table
[i
].name
)))
257 return &config_jump_table
[i
];
262 static int set_config_net(const char *key
, const char *value
,
263 struct lxc_conf
*lxc_conf
, void *data
)
265 if (!lxc_config_value_empty(value
)) {
266 ERROR("lxc.net must not have a value");
270 return clr_config_net(key
, lxc_conf
, data
);
273 static int set_config_net_type(const char *key
, const char *value
,
274 struct lxc_conf
*lxc_conf
, void *data
)
276 struct lxc_netdev
*netdev
= data
;
278 if (lxc_config_value_empty(value
))
279 return clr_config_net_type(key
, lxc_conf
, data
);
284 if (!strcmp(value
, "veth")) {
285 netdev
->type
= LXC_NET_VETH
;
286 } else if (!strcmp(value
, "macvlan")) {
287 netdev
->type
= LXC_NET_MACVLAN
;
288 lxc_macvlan_mode_to_flag(&netdev
->priv
.macvlan_attr
.mode
,
290 } else if (!strcmp(value
, "vlan")) {
291 netdev
->type
= LXC_NET_VLAN
;
292 } else if (!strcmp(value
, "phys")) {
293 netdev
->type
= LXC_NET_PHYS
;
294 } else if (!strcmp(value
, "empty")) {
295 netdev
->type
= LXC_NET_EMPTY
;
296 } else if (!strcmp(value
, "none")) {
297 netdev
->type
= LXC_NET_NONE
;
299 ERROR("Invalid network type %s", value
);
306 static int set_config_net_flags(const char *key
, const char *value
,
307 struct lxc_conf
*lxc_conf
, void *data
)
309 struct lxc_netdev
*netdev
= data
;
311 if (lxc_config_value_empty(value
))
312 return clr_config_net_flags(key
, lxc_conf
, data
);
317 netdev
->flags
|= IFF_UP
;
322 static int create_matched_ifnames(const char *value
, struct lxc_conf
*lxc_conf
,
323 struct lxc_netdev
*netdev
)
325 struct netns_ifaddrs
*ifaddr
, *ifa
;
328 const char *type_key
= "lxc.net.type";
329 const char *link_key
= "lxc.net.link";
330 const char *tmpvalue
= "phys";
332 if (netns_getifaddrs(&ifaddr
, -1, &(bool){false}) < 0) {
333 SYSERROR("Failed to get network interfaces");
337 for (ifa
= ifaddr
, n
= 0; ifa
!= NULL
; ifa
= ifa
->ifa_next
, n
++) {
341 if (ifa
->ifa_addr
->sa_family
!= AF_PACKET
)
344 if (!strncmp(value
, ifa
->ifa_name
, strlen(value
) - 1)) {
345 ret
= set_config_net_type(type_key
, tmpvalue
, lxc_conf
,
348 ret
= set_config_net_link(
349 link_key
, ifa
->ifa_name
, lxc_conf
, netdev
);
351 ERROR("Failed to create matched ifnames");
355 ERROR("Failed to create matched ifnames");
361 netns_freeifaddrs(ifaddr
);
367 static int set_config_net_link(const char *key
, const char *value
,
368 struct lxc_conf
*lxc_conf
, void *data
)
370 struct lxc_netdev
*netdev
= data
;
373 if (lxc_config_value_empty(value
))
374 return clr_config_net_link(key
, lxc_conf
, data
);
379 if (value
[strlen(value
) - 1] == '+' && netdev
->type
== LXC_NET_PHYS
)
380 ret
= create_matched_ifnames(value
, lxc_conf
, netdev
);
382 ret
= network_ifname(netdev
->link
, value
, sizeof(netdev
->link
));
387 static int set_config_net_name(const char *key
, const char *value
,
388 struct lxc_conf
*lxc_conf
, void *data
)
390 struct lxc_netdev
*netdev
= data
;
392 if (lxc_config_value_empty(value
))
393 return clr_config_net_name(key
, lxc_conf
, data
);
398 return network_ifname(netdev
->name
, value
, sizeof(netdev
->name
));
401 static int set_config_net_veth_pair(const char *key
, const char *value
,
402 struct lxc_conf
*lxc_conf
, void *data
)
404 struct lxc_netdev
*netdev
= data
;
406 if (lxc_config_value_empty(value
))
407 return clr_config_net_veth_pair(key
, lxc_conf
, data
);
412 return network_ifname(netdev
->priv
.veth_attr
.pair
, value
, sizeof(netdev
->priv
.veth_attr
.pair
));
415 static int set_config_net_macvlan_mode(const char *key
, const char *value
,
416 struct lxc_conf
*lxc_conf
, void *data
)
418 struct lxc_netdev
*netdev
= data
;
420 if (lxc_config_value_empty(value
))
421 return clr_config_net_macvlan_mode(key
, lxc_conf
, data
);
426 return lxc_macvlan_mode_to_flag(&netdev
->priv
.macvlan_attr
.mode
, value
);
429 static int set_config_net_hwaddr(const char *key
, const char *value
,
430 struct lxc_conf
*lxc_conf
, void *data
)
432 struct lxc_netdev
*netdev
= data
;
435 if (lxc_config_value_empty(value
))
436 return clr_config_net_hwaddr(key
, lxc_conf
, data
);
441 new_value
= strdup(value
);
445 rand_complete_hwaddr(new_value
);
447 if (lxc_config_value_empty(new_value
)) {
449 netdev
->hwaddr
= NULL
;
453 netdev
->hwaddr
= new_value
;
458 static int set_config_net_vlan_id(const char *key
, const char *value
,
459 struct lxc_conf
*lxc_conf
, void *data
)
462 struct lxc_netdev
*netdev
= data
;
464 if (lxc_config_value_empty(value
))
465 return clr_config_net_vlan_id(key
, lxc_conf
, data
);
470 ret
= get_u16(&netdev
->priv
.vlan_attr
.vid
, value
, 0);
477 static int set_config_net_mtu(const char *key
, const char *value
,
478 struct lxc_conf
*lxc_conf
, void *data
)
480 struct lxc_netdev
*netdev
= data
;
482 if (lxc_config_value_empty(value
))
483 return clr_config_net_mtu(key
, lxc_conf
, data
);
488 return set_config_string_item(&netdev
->mtu
, value
);
491 static int set_config_net_ipv4_address(const char *key
, const char *value
,
492 struct lxc_conf
*lxc_conf
, void *data
)
495 struct lxc_netdev
*netdev
= data
;
496 struct lxc_inetdev
*inetdev
;
497 struct lxc_list
*list
;
498 char *cursor
, *slash
;
499 char *addr
= NULL
, *bcast
= NULL
, *prefix
= NULL
;
501 if (lxc_config_value_empty(value
))
502 return clr_config_net_ipv4_address(key
, lxc_conf
, data
);
507 inetdev
= malloc(sizeof(*inetdev
));
510 memset(inetdev
, 0, sizeof(*inetdev
));
512 list
= malloc(sizeof(*list
));
519 list
->elem
= inetdev
;
521 addr
= strdup(value
);
528 cursor
= strstr(addr
, " ");
534 slash
= strstr(addr
, "/");
540 ret
= inet_pton(AF_INET
, addr
, &inetdev
->addr
);
541 if (!ret
|| ret
< 0) {
542 SYSERROR("Invalid ipv4 address \"%s\"", value
);
550 ret
= inet_pton(AF_INET
, bcast
, &inetdev
->bcast
);
551 if (!ret
|| ret
< 0) {
552 SYSERROR("Invalid ipv4 broadcast address \"%s\"", value
);
561 /* No prefix specified, determine it from the network class. */
563 ret
= lxc_safe_uint(prefix
, &inetdev
->prefix
);
571 inetdev
->prefix
= config_ip_prefix(&inetdev
->addr
);
574 /* If no broadcast address, let compute one from the
575 * prefix and address.
578 inetdev
->bcast
.s_addr
= inetdev
->addr
.s_addr
;
579 inetdev
->bcast
.s_addr
|= htonl(INADDR_BROADCAST
>> inetdev
->prefix
);
582 lxc_list_add_tail(&netdev
->ipv4
, list
);
588 static int set_config_net_ipv4_gateway(const char *key
, const char *value
,
589 struct lxc_conf
*lxc_conf
, void *data
)
591 struct lxc_netdev
*netdev
= data
;
593 if (lxc_config_value_empty(value
))
594 return clr_config_net_ipv4_gateway(key
, lxc_conf
, data
);
599 free(netdev
->ipv4_gateway
);
601 if (!strcmp(value
, "auto")) {
602 netdev
->ipv4_gateway
= NULL
;
603 netdev
->ipv4_gateway_auto
= true;
608 gw
= malloc(sizeof(*gw
));
612 ret
= inet_pton(AF_INET
, value
, gw
);
613 if (!ret
|| ret
< 0) {
614 SYSERROR("Invalid ipv4 gateway address \"%s\"", value
);
619 netdev
->ipv4_gateway
= gw
;
620 netdev
->ipv4_gateway_auto
= false;
626 static int set_config_net_ipv6_address(const char *key
, const char *value
,
627 struct lxc_conf
*lxc_conf
, void *data
)
630 struct lxc_netdev
*netdev
= data
;
631 struct lxc_inet6dev
*inet6dev
;
632 struct lxc_list
*list
;
633 char *slash
, *valdup
, *netmask
;
635 if (lxc_config_value_empty(value
))
636 return clr_config_net_ipv6_address(key
, lxc_conf
, data
);
641 inet6dev
= malloc(sizeof(*inet6dev
));
644 memset(inet6dev
, 0, sizeof(*inet6dev
));
646 list
= malloc(sizeof(*list
));
653 list
->elem
= inet6dev
;
655 valdup
= strdup(value
);
662 inet6dev
->prefix
= 64;
663 slash
= strstr(valdup
, "/");
668 ret
= lxc_safe_uint(netmask
, &inet6dev
->prefix
);
677 ret
= inet_pton(AF_INET6
, valdup
, &inet6dev
->addr
);
678 if (!ret
|| ret
< 0) {
679 SYSERROR("Invalid ipv6 address \"%s\"", valdup
);
686 lxc_list_add_tail(&netdev
->ipv6
, list
);
692 static int set_config_net_ipv6_gateway(const char *key
, const char *value
,
693 struct lxc_conf
*lxc_conf
, void *data
)
695 struct lxc_netdev
*netdev
= data
;
697 if (lxc_config_value_empty(value
))
698 return clr_config_net_ipv6_gateway(key
, lxc_conf
, data
);
703 free(netdev
->ipv6_gateway
);
705 if (!strcmp(value
, "auto")) {
706 netdev
->ipv6_gateway
= NULL
;
707 netdev
->ipv6_gateway_auto
= true;
712 gw
= malloc(sizeof(*gw
));
716 ret
= inet_pton(AF_INET6
, value
, gw
);
717 if (!ret
|| ret
< 0) {
718 SYSERROR("Invalid ipv6 gateway address \"%s\"", value
);
723 netdev
->ipv6_gateway
= gw
;
724 netdev
->ipv6_gateway_auto
= false;
730 static int set_config_net_script_up(const char *key
, const char *value
,
731 struct lxc_conf
*lxc_conf
, void *data
)
733 struct lxc_netdev
*netdev
= data
;
735 if (lxc_config_value_empty(value
))
736 return clr_config_net_script_up(key
, lxc_conf
, data
);
741 return set_config_string_item(&netdev
->upscript
, value
);
744 static int set_config_net_script_down(const char *key
, const char *value
,
745 struct lxc_conf
*lxc_conf
, void *data
)
747 struct lxc_netdev
*netdev
= data
;
749 if (lxc_config_value_empty(value
))
750 return clr_config_net_script_down(key
, lxc_conf
, data
);
755 return set_config_string_item(&netdev
->downscript
, value
);
758 static int add_hook(struct lxc_conf
*lxc_conf
, int which
, char *hook
)
760 struct lxc_list
*hooklist
;
762 hooklist
= malloc(sizeof(*hooklist
));
768 hooklist
->elem
= hook
;
769 lxc_list_add_tail(&lxc_conf
->hooks
[which
], hooklist
);
774 static int set_config_seccomp_profile(const char *key
, const char *value
,
775 struct lxc_conf
*lxc_conf
, void *data
)
777 return set_config_path_item(&lxc_conf
->seccomp
, value
);
780 static int set_config_execute_cmd(const char *key
, const char *value
,
781 struct lxc_conf
*lxc_conf
, void *data
)
783 return set_config_path_item(&lxc_conf
->execute_cmd
, value
);
786 static int set_config_init_cmd(const char *key
, const char *value
,
787 struct lxc_conf
*lxc_conf
, void *data
)
789 return set_config_path_item(&lxc_conf
->init_cmd
, value
);
792 static int set_config_init_cwd(const char *key
, const char *value
,
793 struct lxc_conf
*lxc_conf
, void *data
)
795 return set_config_path_item(&lxc_conf
->init_cwd
, value
);
798 static int set_config_init_uid(const char *key
, const char *value
,
799 struct lxc_conf
*lxc_conf
, void *data
)
801 unsigned int init_uid
;
803 if (lxc_config_value_empty(value
)) {
804 lxc_conf
->init_uid
= 0;
808 if (lxc_safe_uint(value
, &init_uid
) < 0)
811 lxc_conf
->init_uid
= init_uid
;
816 static int set_config_init_gid(const char *key
, const char *value
,
817 struct lxc_conf
*lxc_conf
, void *data
)
819 unsigned int init_gid
;
821 if (lxc_config_value_empty(value
)) {
822 lxc_conf
->init_gid
= 0;
826 if (lxc_safe_uint(value
, &init_gid
) < 0)
829 lxc_conf
->init_gid
= init_gid
;
834 static int set_config_hooks(const char *key
, const char *value
,
835 struct lxc_conf
*lxc_conf
, void *data
)
839 if (lxc_config_value_empty(value
))
840 return lxc_clear_hooks(lxc_conf
, key
);
842 if (strcmp(key
+ 4, "hook") == 0) {
843 ERROR("lxc.hook must not have a value");
847 copy
= strdup(value
);
851 if (strcmp(key
+ 9, "pre-start") == 0)
852 return add_hook(lxc_conf
, LXCHOOK_PRESTART
, copy
);
853 else if (strcmp(key
+ 9, "start-host") == 0)
854 return add_hook(lxc_conf
, LXCHOOK_START_HOST
, copy
);
855 else if (strcmp(key
+ 9, "pre-mount") == 0)
856 return add_hook(lxc_conf
, LXCHOOK_PREMOUNT
, copy
);
857 else if (strcmp(key
+ 9, "autodev") == 0)
858 return add_hook(lxc_conf
, LXCHOOK_AUTODEV
, copy
);
859 else if (strcmp(key
+ 9, "mount") == 0)
860 return add_hook(lxc_conf
, LXCHOOK_MOUNT
, copy
);
861 else if (strcmp(key
+ 9, "start") == 0)
862 return add_hook(lxc_conf
, LXCHOOK_START
, copy
);
863 else if (strcmp(key
+ 9, "stop") == 0)
864 return add_hook(lxc_conf
, LXCHOOK_STOP
, copy
);
865 else if (strcmp(key
+ 9, "post-stop") == 0)
866 return add_hook(lxc_conf
, LXCHOOK_POSTSTOP
, copy
);
867 else if (strcmp(key
+ 9, "clone") == 0)
868 return add_hook(lxc_conf
, LXCHOOK_CLONE
, copy
);
869 else if (strcmp(key
+ 9, "destroy") == 0)
870 return add_hook(lxc_conf
, LXCHOOK_DESTROY
, copy
);
877 static int set_config_hooks_version(const char *key
, const char *value
,
878 struct lxc_conf
*lxc_conf
, void *data
)
883 if (lxc_config_value_empty(value
))
884 return clr_config_hooks_version(key
, lxc_conf
, NULL
);
886 ret
= lxc_safe_uint(value
, &tmp
);
891 ERROR("Invalid hook version specified. Currently only 0 "
892 "(legacy) and 1 are supported");
896 lxc_conf
->hooks_version
= tmp
;
901 static int set_config_personality(const char *key
, const char *value
,
902 struct lxc_conf
*lxc_conf
, void *data
)
904 signed long personality
= lxc_config_parse_arch(value
);
906 if (personality
>= 0)
907 lxc_conf
->personality
= personality
;
909 WARN("Unsupported personality \"%s\"", value
);
914 static int set_config_pty_max(const char *key
, const char *value
,
915 struct lxc_conf
*lxc_conf
, void *data
)
918 unsigned int max
= 0;
920 if (lxc_config_value_empty(value
)) {
921 lxc_conf
->pty_max
= 0;
925 ret
= lxc_safe_uint(value
, &max
);
929 lxc_conf
->pty_max
= max
;
934 /* We only need to check whether the first byte of the key after the lxc.start.
935 * prefix matches our expectations since they fortunately all start with a
936 * different letter. If anything was wrong with the key we would have already
937 * noticed when the callback was called.
939 static int set_config_start(const char *key
, const char *value
,
940 struct lxc_conf
*lxc_conf
, void *data
)
944 is_empty
= lxc_config_value_empty(value
);
946 if (*(key
+ 10) == 'a') { /* lxc.start.auto */
948 lxc_conf
->start_auto
= 0;
952 if (lxc_safe_uint(value
, &lxc_conf
->start_auto
) < 0)
955 if (lxc_conf
->start_auto
> 1)
959 } else if (*(key
+ 10) == 'd') { /* lxc.start.delay */
961 lxc_conf
->start_delay
= 0;
965 return lxc_safe_uint(value
, &lxc_conf
->start_delay
);
966 } else if (*(key
+ 10) == 'o') { /* lxc.start.order */
968 lxc_conf
->start_order
= 0;
972 return lxc_safe_int(value
, &lxc_conf
->start_order
);
978 static int set_config_monitor(const char *key
, const char *value
,
979 struct lxc_conf
*lxc_conf
, void *data
)
981 if (lxc_config_value_empty(value
)) {
982 lxc_conf
->monitor_unshare
= 0;
986 if (strcmp(key
+ 12, "unshare") == 0)
987 return lxc_safe_uint(value
, &lxc_conf
->monitor_unshare
);
992 static int set_config_monitor_signal_pdeath(const char *key
, const char *value
,
993 struct lxc_conf
*lxc_conf
, void *data
)
995 if (lxc_config_value_empty(value
)) {
996 lxc_conf
->monitor_signal_pdeath
= 0;
1000 if (strcmp(key
+ 12, "signal.pdeath") == 0) {
1003 sig_n
= sig_parse(value
);
1007 lxc_conf
->monitor_signal_pdeath
= sig_n
;
1014 static int set_config_group(const char *key
, const char *value
,
1015 struct lxc_conf
*lxc_conf
, void *data
)
1017 char *groups
, *token
;
1018 struct lxc_list
*grouplist
;
1021 if (lxc_config_value_empty(value
))
1022 return lxc_clear_groups(lxc_conf
);
1024 groups
= strdup(value
);
1028 /* In case several groups are specified in a single line split these
1029 * groups in a single element for the list.
1031 lxc_iterate_parts(token
, groups
, " \t") {
1032 grouplist
= malloc(sizeof(*grouplist
));
1038 grouplist
->elem
= strdup(token
);
1039 if (!grouplist
->elem
) {
1045 lxc_list_add_tail(&lxc_conf
->groups
, grouplist
);
1053 static int set_config_environment(const char *key
, const char *value
,
1054 struct lxc_conf
*lxc_conf
, void *data
)
1056 struct lxc_list
*list_item
= NULL
;
1058 if (lxc_config_value_empty(value
))
1059 return lxc_clear_environment(lxc_conf
);
1061 list_item
= malloc(sizeof(*list_item
));
1065 if (!strchr(value
, '=')) {
1066 const char *env_val
;
1067 const char *env_key
= value
;
1068 const char *env_var
[3] = {0};
1070 env_val
= getenv(env_key
);
1074 env_var
[0] = env_key
;
1075 env_var
[1] = env_val
;
1076 list_item
->elem
= lxc_string_join("=", env_var
, false);
1078 list_item
->elem
= strdup(value
);
1081 if (!list_item
->elem
)
1084 lxc_list_add_tail(&lxc_conf
->environment
, list_item
);
1094 static int set_config_tty_max(const char *key
, const char *value
,
1095 struct lxc_conf
*lxc_conf
, void *data
)
1098 unsigned int nbtty
= 0;
1100 if (lxc_config_value_empty(value
)) {
1101 lxc_conf
->ttys
.max
= 0;
1105 ret
= lxc_safe_uint(value
, &nbtty
);
1109 lxc_conf
->ttys
.max
= nbtty
;
1114 static int set_config_tty_dir(const char *key
, const char *value
,
1115 struct lxc_conf
*lxc_conf
, void *data
)
1117 return set_config_string_item_max(&lxc_conf
->ttys
.dir
, value
,
1121 static int set_config_apparmor_profile(const char *key
, const char *value
,
1122 struct lxc_conf
*lxc_conf
, void *data
)
1124 return set_config_string_item(&lxc_conf
->lsm_aa_profile
, value
);
1127 static int set_config_apparmor_allow_incomplete(const char *key
,
1129 struct lxc_conf
*lxc_conf
,
1132 if (lxc_config_value_empty(value
)) {
1133 lxc_conf
->lsm_aa_allow_incomplete
= 0;
1137 if (lxc_safe_uint(value
, &lxc_conf
->lsm_aa_allow_incomplete
) < 0)
1140 if (lxc_conf
->lsm_aa_allow_incomplete
> 1)
1146 static int set_config_apparmor_allow_nesting(const char *key
,
1148 struct lxc_conf
*lxc_conf
,
1151 if (lxc_config_value_empty(value
))
1152 return clr_config_apparmor_allow_nesting(key
, lxc_conf
, NULL
);
1154 if (lxc_safe_uint(value
, &lxc_conf
->lsm_aa_allow_nesting
) < 0)
1157 if (lxc_conf
->lsm_aa_allow_nesting
> 1)
1163 static int set_config_apparmor_raw(const char *key
,
1165 struct lxc_conf
*lxc_conf
,
1169 struct lxc_list
*list
;
1171 if (lxc_config_value_empty(value
))
1172 return lxc_clear_apparmor_raw(lxc_conf
);
1174 list
= malloc(sizeof(*list
));
1180 elem
= strdup(value
);
1187 lxc_list_add_tail(&lxc_conf
->lsm_aa_raw
, list
);
1192 static int set_config_selinux_context(const char *key
, const char *value
,
1193 struct lxc_conf
*lxc_conf
, void *data
)
1195 return set_config_string_item(&lxc_conf
->lsm_se_context
, value
);
1198 static int set_config_log_file(const char *key
, const char *value
,
1199 struct lxc_conf
*c
, void *data
)
1203 if (lxc_config_value_empty(value
)) {
1209 /* Store these values in the lxc_conf, and then try to set for actual
1212 ret
= set_config_path_item(&c
->logfile
, value
);
1214 ret
= lxc_log_set_file(&c
->logfd
, c
->logfile
);
1219 static int set_config_log_level(const char *key
, const char *value
,
1220 struct lxc_conf
*lxc_conf
, void *data
)
1224 if (lxc_config_value_empty(value
)) {
1225 lxc_conf
->loglevel
= LXC_LOG_LEVEL_NOTSET
;
1229 if (value
[0] >= '0' && value
[0] <= '9') {
1230 if (lxc_safe_int(value
, &newlevel
) < 0)
1233 newlevel
= lxc_log_priority_to_int(value
);
1236 /* Store these values in the lxc_conf, and then try to set for actual
1239 lxc_conf
->loglevel
= newlevel
;
1241 return lxc_log_set_level(&lxc_conf
->loglevel
, newlevel
);
1244 static int set_config_autodev(const char *key
, const char *value
,
1245 struct lxc_conf
*lxc_conf
, void *data
)
1247 if (lxc_config_value_empty(value
)) {
1248 lxc_conf
->autodev
= 0;
1252 if (lxc_safe_uint(value
, &lxc_conf
->autodev
) < 0)
1255 if (lxc_conf
->autodev
> 1)
1261 static int set_config_signal_halt(const char *key
, const char *value
,
1262 struct lxc_conf
*lxc_conf
, void *data
)
1266 if (lxc_config_value_empty(value
)) {
1267 lxc_conf
->haltsignal
= 0;
1271 sig_n
= sig_parse(value
);
1275 lxc_conf
->haltsignal
= sig_n
;
1280 static int set_config_signal_reboot(const char *key
, const char *value
,
1281 struct lxc_conf
*lxc_conf
, void *data
)
1285 if (lxc_config_value_empty(value
)) {
1286 lxc_conf
->rebootsignal
= 0;
1290 sig_n
= sig_parse(value
);
1294 lxc_conf
->rebootsignal
= sig_n
;
1299 static int set_config_signal_stop(const char *key
, const char *value
,
1300 struct lxc_conf
*lxc_conf
, void *data
)
1304 if (lxc_config_value_empty(value
)) {
1305 lxc_conf
->stopsignal
= 0;
1309 sig_n
= sig_parse(value
);
1313 lxc_conf
->stopsignal
= sig_n
;
1318 static int __set_config_cgroup_controller(const char *key
, const char *value
,
1319 struct lxc_conf
*lxc_conf
, int version
)
1321 const char *subkey
, *token
;
1323 struct lxc_list
*cglist
= NULL
;
1324 struct lxc_cgroup
*cgelem
= NULL
;
1326 if (lxc_config_value_empty(value
))
1327 return lxc_clear_cgroups(lxc_conf
, key
, version
);
1329 if (version
== CGROUP2_SUPER_MAGIC
) {
1330 token
= "lxc.cgroup2.";
1332 } else if (version
== CGROUP_SUPER_MAGIC
) {
1333 token
= "lxc.cgroup.";
1339 if (strncmp(key
, token
, token_len
) != 0)
1342 subkey
= key
+ token_len
;
1343 if (*subkey
== '\0')
1346 cglist
= malloc(sizeof(*cglist
));
1350 cgelem
= malloc(sizeof(*cgelem
));
1353 memset(cgelem
, 0, sizeof(*cgelem
));
1355 cgelem
->subsystem
= strdup(subkey
);
1356 if (!cgelem
->subsystem
)
1359 cgelem
->value
= strdup(value
);
1363 cgelem
->version
= version
;
1365 lxc_list_add_elem(cglist
, cgelem
);
1367 if (version
== CGROUP2_SUPER_MAGIC
)
1368 lxc_list_add_tail(&lxc_conf
->cgroup2
, cglist
);
1370 lxc_list_add_tail(&lxc_conf
->cgroup
, cglist
);
1377 free(cgelem
->subsystem
);
1378 free(cgelem
->value
);
1385 static int set_config_cgroup_controller(const char *key
, const char *value
,
1386 struct lxc_conf
*lxc_conf
, void *data
)
1388 return __set_config_cgroup_controller(key
, value
, lxc_conf
,
1389 CGROUP_SUPER_MAGIC
);
1392 static int set_config_cgroup2_controller(const char *key
, const char *value
,
1393 struct lxc_conf
*lxc_conf
, void *data
)
1395 return __set_config_cgroup_controller(key
, value
, lxc_conf
,
1396 CGROUP2_SUPER_MAGIC
);
1400 static int set_config_cgroup_dir(const char *key
, const char *value
,
1401 struct lxc_conf
*lxc_conf
, void *data
)
1403 if (lxc_config_value_empty(value
))
1404 return clr_config_cgroup_dir(key
, lxc_conf
, NULL
);
1406 return set_config_string_item(&lxc_conf
->cgroup_meta
.dir
, value
);
1409 static int set_config_cgroup_relative(const char *key
, const char *value
,
1410 struct lxc_conf
*lxc_conf
, void *data
)
1412 unsigned int converted
;
1415 if (lxc_config_value_empty(value
))
1416 return clr_config_cgroup_relative(key
, lxc_conf
, NULL
);
1418 ret
= lxc_safe_uint(value
, &converted
);
1422 if (converted
== 1) {
1423 lxc_conf
->cgroup_meta
.relative
= true;
1427 if (converted
== 0) {
1428 lxc_conf
->cgroup_meta
.relative
= false;
1435 static int set_config_prlimit(const char *key
, const char *value
,
1436 struct lxc_conf
*lxc_conf
, void *data
)
1438 struct lxc_list
*iter
;
1439 struct rlimit limit
;
1441 struct lxc_list
*limlist
= NULL
;
1442 struct lxc_limit
*limelem
= NULL
;
1444 if (lxc_config_value_empty(value
))
1445 return lxc_clear_limits(lxc_conf
, key
);
1447 if (strncmp(key
, "lxc.prlimit.", STRLITERALLEN("lxc.prlimit.")) != 0)
1450 key
+= STRLITERALLEN("lxc.prlimit.");
1452 /* soft limit comes first in the value */
1453 if (!parse_limit_value(&value
, &limit_value
))
1456 limit
.rlim_cur
= limit_value
;
1458 /* skip spaces and a colon */
1459 while (isspace(*value
))
1464 else if (*value
) /* any other character is an error here */
1467 while (isspace(*value
))
1470 /* optional hard limit */
1472 if (!parse_limit_value(&value
, &limit_value
))
1475 limit
.rlim_max
= limit_value
;
1477 /* check for trailing garbage */
1478 while (isspace(*value
))
1484 /* a single value sets both hard and soft limit */
1485 limit
.rlim_max
= limit
.rlim_cur
;
1488 /* find existing list element */
1489 lxc_list_for_each(iter
, &lxc_conf
->limits
) {
1490 limelem
= iter
->elem
;
1491 if (!strcmp(key
, limelem
->resource
)) {
1492 limelem
->limit
= limit
;
1497 /* allocate list element */
1498 limlist
= malloc(sizeof(*limlist
));
1502 limelem
= malloc(sizeof(*limelem
));
1505 memset(limelem
, 0, sizeof(*limelem
));
1507 limelem
->resource
= strdup(key
);
1508 if (!limelem
->resource
)
1511 limelem
->limit
= limit
;
1512 lxc_list_add_elem(limlist
, limelem
);;
1513 lxc_list_add_tail(&lxc_conf
->limits
, limlist
);
1521 free(limelem
->resource
);
1528 static int set_config_sysctl(const char *key
, const char *value
,
1529 struct lxc_conf
*lxc_conf
, void *data
)
1531 struct lxc_list
*iter
;
1532 char *replace_value
= NULL
;
1533 struct lxc_list
*sysctl_list
= NULL
;
1534 struct lxc_sysctl
*sysctl_elem
= NULL
;
1536 if (lxc_config_value_empty(value
))
1537 return clr_config_sysctl(key
, lxc_conf
, NULL
);
1539 if (strncmp(key
, "lxc.sysctl.", STRLITERALLEN("lxc.sysctl.")) != 0)
1542 key
+= STRLITERALLEN("lxc.sysctl.");
1544 /* find existing list element */
1545 lxc_list_for_each(iter
, &lxc_conf
->sysctls
) {
1546 sysctl_elem
= iter
->elem
;
1548 if (strcmp(key
, sysctl_elem
->key
) != 0)
1551 replace_value
= strdup(value
);
1555 free(sysctl_elem
->value
);
1556 sysctl_elem
->value
= replace_value
;
1561 /* allocate list element */
1562 sysctl_list
= malloc(sizeof(*sysctl_list
));
1566 sysctl_elem
= malloc(sizeof(*sysctl_elem
));
1569 memset(sysctl_elem
, 0, sizeof(*sysctl_elem
));
1571 sysctl_elem
->key
= strdup(key
);
1572 if (!sysctl_elem
->key
)
1575 sysctl_elem
->value
= strdup(value
);
1576 if (!sysctl_elem
->value
)
1579 lxc_list_add_elem(sysctl_list
, sysctl_elem
);
1580 lxc_list_add_tail(&lxc_conf
->sysctls
, sysctl_list
);
1588 free(sysctl_elem
->key
);
1589 free(sysctl_elem
->value
);
1596 static int set_config_proc(const char *key
, const char *value
,
1597 struct lxc_conf
*lxc_conf
, void *data
)
1600 struct lxc_list
*proclist
= NULL
;
1601 struct lxc_proc
*procelem
= NULL
;
1603 if (lxc_config_value_empty(value
))
1604 return clr_config_proc(key
, lxc_conf
, NULL
);
1606 if (strncmp(key
, "lxc.proc.", STRLITERALLEN("lxc.proc.")) != 0)
1609 subkey
= key
+ STRLITERALLEN("lxc.proc.");
1610 if (*subkey
== '\0')
1613 proclist
= malloc(sizeof(*proclist
));
1617 procelem
= malloc(sizeof(*procelem
));
1620 memset(procelem
, 0, sizeof(*procelem
));
1622 procelem
->filename
= strdup(subkey
);
1623 procelem
->value
= strdup(value
);
1625 if (!procelem
->filename
|| !procelem
->value
)
1628 proclist
->elem
= procelem
;
1630 lxc_list_add_tail(&lxc_conf
->procs
, proclist
);
1638 free(procelem
->filename
);
1639 free(procelem
->value
);
1646 static int set_config_idmaps(const char *key
, const char *value
,
1647 struct lxc_conf
*lxc_conf
, void *data
)
1649 unsigned long hostid
, nsid
, range
;
1652 struct lxc_list
*idmaplist
= NULL
;
1653 struct id_map
*idmap
= NULL
;
1655 if (lxc_config_value_empty(value
))
1656 return lxc_clear_idmaps(lxc_conf
);
1658 idmaplist
= malloc(sizeof(*idmaplist
));
1662 idmap
= malloc(sizeof(*idmap
));
1665 memset(idmap
, 0, sizeof(*idmap
));
1667 ret
= parse_idmaps(value
, &type
, &nsid
, &hostid
, &range
);
1669 ERROR("Failed to parse id mappings");
1673 INFO("Read uid map: type %c nsid %lu hostid %lu range %lu", type
, nsid
, hostid
, range
);
1675 idmap
->idtype
= ID_TYPE_UID
;
1676 else if (type
== 'g')
1677 idmap
->idtype
= ID_TYPE_GID
;
1681 idmap
->hostid
= hostid
;
1683 idmap
->range
= range
;
1684 idmaplist
->elem
= idmap
;
1685 lxc_list_add_tail(&lxc_conf
->id_map
, idmaplist
);
1687 if (!lxc_conf
->root_nsuid_map
&& idmap
->idtype
== ID_TYPE_UID
)
1688 if (idmap
->nsid
== 0)
1689 lxc_conf
->root_nsuid_map
= idmap
;
1691 if (!lxc_conf
->root_nsgid_map
&& idmap
->idtype
== ID_TYPE_GID
)
1692 if (idmap
->nsid
== 0)
1693 lxc_conf
->root_nsgid_map
= idmap
;
1706 static int set_config_mount_fstab(const char *key
, const char *value
,
1707 struct lxc_conf
*lxc_conf
, void *data
)
1709 if (lxc_config_value_empty(value
)) {
1710 clr_config_mount_fstab(key
, lxc_conf
, NULL
);
1714 return set_config_path_item(&lxc_conf
->fstab
, value
);
1717 static int set_config_mount_auto(const char *key
, const char *value
,
1718 struct lxc_conf
*lxc_conf
, void *data
)
1720 char *autos
, *token
;
1727 } allowed_auto_mounts
[] = {
1728 { "proc", LXC_AUTO_PROC_MASK
, LXC_AUTO_PROC_MIXED
},
1729 { "proc:mixed", LXC_AUTO_PROC_MASK
, LXC_AUTO_PROC_MIXED
},
1730 { "proc:rw", LXC_AUTO_PROC_MASK
, LXC_AUTO_PROC_RW
},
1731 { "sys", LXC_AUTO_SYS_MASK
, LXC_AUTO_SYS_MIXED
},
1732 { "sys:ro", LXC_AUTO_SYS_MASK
, LXC_AUTO_SYS_RO
},
1733 { "sys:mixed", LXC_AUTO_SYS_MASK
, LXC_AUTO_SYS_MIXED
},
1734 { "sys:rw", LXC_AUTO_SYS_MASK
, LXC_AUTO_SYS_RW
},
1735 { "cgroup", LXC_AUTO_CGROUP_MASK
, LXC_AUTO_CGROUP_NOSPEC
},
1736 { "cgroup:mixed", LXC_AUTO_CGROUP_MASK
, LXC_AUTO_CGROUP_MIXED
},
1737 { "cgroup:ro", LXC_AUTO_CGROUP_MASK
, LXC_AUTO_CGROUP_RO
},
1738 { "cgroup:rw", LXC_AUTO_CGROUP_MASK
, LXC_AUTO_CGROUP_RW
},
1739 { "cgroup:force", LXC_AUTO_CGROUP_MASK
, LXC_AUTO_CGROUP_NOSPEC
| LXC_AUTO_CGROUP_FORCE
},
1740 { "cgroup:mixed:force", LXC_AUTO_CGROUP_MASK
, LXC_AUTO_CGROUP_MIXED
| LXC_AUTO_CGROUP_FORCE
},
1741 { "cgroup:ro:force", LXC_AUTO_CGROUP_MASK
, LXC_AUTO_CGROUP_RO
| LXC_AUTO_CGROUP_FORCE
},
1742 { "cgroup:rw:force", LXC_AUTO_CGROUP_MASK
, LXC_AUTO_CGROUP_RW
| LXC_AUTO_CGROUP_FORCE
},
1743 { "cgroup-full", LXC_AUTO_CGROUP_MASK
, LXC_AUTO_CGROUP_FULL_NOSPEC
},
1744 { "cgroup-full:mixed", LXC_AUTO_CGROUP_MASK
, LXC_AUTO_CGROUP_FULL_MIXED
},
1745 { "cgroup-full:ro", LXC_AUTO_CGROUP_MASK
, LXC_AUTO_CGROUP_FULL_RO
},
1746 { "cgroup-full:rw", LXC_AUTO_CGROUP_MASK
, LXC_AUTO_CGROUP_FULL_RW
},
1747 { "cgroup-full:force", LXC_AUTO_CGROUP_MASK
, LXC_AUTO_CGROUP_FULL_NOSPEC
| LXC_AUTO_CGROUP_FORCE
},
1748 { "cgroup-full:mixed:force", LXC_AUTO_CGROUP_MASK
, LXC_AUTO_CGROUP_FULL_MIXED
| LXC_AUTO_CGROUP_FORCE
},
1749 { "cgroup-full:ro:force", LXC_AUTO_CGROUP_MASK
, LXC_AUTO_CGROUP_FULL_RO
| LXC_AUTO_CGROUP_FORCE
},
1750 { "cgroup-full:rw:force", LXC_AUTO_CGROUP_MASK
, LXC_AUTO_CGROUP_FULL_RW
| LXC_AUTO_CGROUP_FORCE
},
1751 { "shmounts:", LXC_AUTO_SHMOUNTS_MASK
, LXC_AUTO_SHMOUNTS
},
1752 /* For adding anything that is just a single on/off, but has no
1753 * options: keep mask and flag identical and just define the enum
1754 * value as an unused bit so far
1759 if (lxc_config_value_empty(value
)) {
1760 lxc_conf
->auto_mounts
= 0;
1764 autos
= strdup(value
);
1768 lxc_iterate_parts(token
, autos
, " \t") {
1769 bool is_shmounts
= false;
1771 for (i
= 0; allowed_auto_mounts
[i
].token
; i
++) {
1772 if (!strcmp(allowed_auto_mounts
[i
].token
, token
))
1775 if (strcmp("shmounts:", allowed_auto_mounts
[i
].token
) == 0 &&
1776 strncmp("shmounts:", token
, STRLITERALLEN("shmounts:")) == 0) {
1782 if (!allowed_auto_mounts
[i
].token
) {
1783 ERROR("Invalid filesystem to automount \"%s\"", token
);
1787 lxc_conf
->auto_mounts
&= ~allowed_auto_mounts
[i
].mask
;
1788 lxc_conf
->auto_mounts
|= allowed_auto_mounts
[i
].flag
;
1791 char *container_path
;
1794 host_path
= token
+ STRLITERALLEN("shmounts:");
1795 if (*host_path
== '\0') {
1796 SYSERROR("Failed to copy shmounts host path");
1800 container_path
= strchr(host_path
, ':');
1801 if (!container_path
|| *(container_path
+ 1) == '\0')
1802 container_path
= "/dev/.lxc-mounts";
1804 *container_path
++ = '\0';
1806 lxc_conf
->shmount
.path_host
= strdup(host_path
);
1807 if (!lxc_conf
->shmount
.path_host
) {
1808 SYSERROR("Failed to copy shmounts host path");
1812 lxc_conf
->shmount
.path_cont
= strdup(container_path
);
1813 if(!lxc_conf
->shmount
.path_cont
) {
1814 SYSERROR("Failed to copy shmounts container path");
1828 static int set_config_mount(const char *key
, const char *value
,
1829 struct lxc_conf
*lxc_conf
, void *data
)
1832 struct lxc_list
*mntlist
;
1834 if (lxc_config_value_empty(value
))
1835 return lxc_clear_mount_entries(lxc_conf
);
1837 mntlist
= malloc(sizeof(*mntlist
));
1841 mntelem
= strdup(value
);
1846 mntlist
->elem
= mntelem
;
1848 lxc_list_add_tail(&lxc_conf
->mount_list
, mntlist
);
1853 int add_elem_to_mount_list(const char *value
, struct lxc_conf
*lxc_conf
) {
1854 return set_config_mount(NULL
, value
, lxc_conf
, NULL
);
1857 static int set_config_cap_keep(const char *key
, const char *value
,
1858 struct lxc_conf
*lxc_conf
, void *data
)
1860 char *keepcaps
, *token
;
1861 struct lxc_list
*keeplist
;
1864 if (lxc_config_value_empty(value
))
1865 return lxc_clear_config_keepcaps(lxc_conf
);
1867 keepcaps
= strdup(value
);
1871 /* In case several capability keep is specified in a single line
1872 * split these caps in a single element for the list.
1874 lxc_iterate_parts(token
, keepcaps
, " \t") {
1875 if (!strcmp(token
, "none"))
1876 lxc_clear_config_keepcaps(lxc_conf
);
1878 keeplist
= malloc(sizeof(*keeplist
));
1882 keeplist
->elem
= strdup(token
);
1883 if (!keeplist
->elem
) {
1888 lxc_list_add_tail(&lxc_conf
->keepcaps
, keeplist
);
1899 static int set_config_cap_drop(const char *key
, const char *value
,
1900 struct lxc_conf
*lxc_conf
, void *data
)
1902 char *dropcaps
, *token
;
1903 struct lxc_list
*droplist
;
1906 if (lxc_config_value_empty(value
))
1907 return lxc_clear_config_caps(lxc_conf
);
1909 dropcaps
= strdup(value
);
1913 /* In case several capability drop is specified in a single line
1914 * split these caps in a single element for the list.
1916 lxc_iterate_parts(token
, dropcaps
, " \t") {
1917 droplist
= malloc(sizeof(*droplist
));
1921 droplist
->elem
= strdup(token
);
1922 if (!droplist
->elem
) {
1927 lxc_list_add_tail(&lxc_conf
->caps
, droplist
);
1938 static int set_config_console_path(const char *key
, const char *value
,
1939 struct lxc_conf
*lxc_conf
, void *data
)
1941 return set_config_path_item(&lxc_conf
->console
.path
, value
);
1944 static int set_config_console_rotate(const char *key
, const char *value
,
1945 struct lxc_conf
*lxc_conf
, void *data
)
1947 if (lxc_config_value_empty(value
)) {
1948 lxc_conf
->console
.log_rotate
= 0;
1952 if (lxc_safe_uint(value
, &lxc_conf
->console
.log_rotate
) < 0)
1955 if (lxc_conf
->console
.log_rotate
> 1) {
1956 ERROR("The \"lxc.console.rotate\" config key can only be set "
1964 static int set_config_console_logfile(const char *key
, const char *value
,
1965 struct lxc_conf
*lxc_conf
, void *data
)
1967 return set_config_path_item(&lxc_conf
->console
.log_path
, value
);
1970 static int set_config_console_buffer_size(const char *key
, const char *value
,
1971 struct lxc_conf
*lxc_conf
, void *data
)
1975 uint64_t buffer_size
, pgsz
;
1977 if (lxc_config_value_empty(value
)) {
1978 lxc_conf
->console
.buffer_size
= 0;
1982 /* If the user specified "auto" the default log size is 2^17 = 128 Kib */
1983 if (!strcmp(value
, "auto")) {
1984 lxc_conf
->console
.buffer_size
= 1 << 17;
1988 ret
= parse_byte_size_string(value
, &size
);
1995 /* must be at least a page size */
1996 pgsz
= lxc_getpagesize();
1997 if ((uint64_t)size
< pgsz
) {
1998 NOTICE("Requested ringbuffer size for the console is %" PRId64
1999 " but must be at least %" PRId64
2000 " bytes. Setting ringbuffer size to %" PRId64
" bytes",
2005 buffer_size
= lxc_find_next_power2((uint64_t)size
);
2006 if (buffer_size
== 0)
2009 if (buffer_size
!= size
)
2010 NOTICE("Passed size was not a power of 2. Rounding log size to "
2011 "next power of two: %" PRIu64
" bytes", buffer_size
);
2013 lxc_conf
->console
.buffer_size
= buffer_size
;
2018 static int set_config_console_size(const char *key
, const char *value
,
2019 struct lxc_conf
*lxc_conf
, void *data
)
2023 uint64_t log_size
, pgsz
;
2025 if (lxc_config_value_empty(value
)) {
2026 lxc_conf
->console
.log_size
= 0;
2030 /* If the user specified "auto" the default log size is 2^17 = 128 Kib */
2031 if (!strcmp(value
, "auto")) {
2032 lxc_conf
->console
.log_size
= 1 << 17;
2036 ret
= parse_byte_size_string(value
, &size
);
2043 /* must be at least a page size */
2044 pgsz
= lxc_getpagesize();
2045 if ((uint64_t)size
< pgsz
) {
2046 NOTICE("Requested ringbuffer size for the console is %" PRId64
2047 " but must be at least %" PRId64
2048 " bytes. Setting ringbuffer size to %" PRId64
" bytes",
2053 log_size
= lxc_find_next_power2((uint64_t)size
);
2057 if (log_size
!= size
)
2058 NOTICE("Passed size was not a power of 2. Rounding log size to "
2059 "next power of two: %" PRIu64
" bytes", log_size
);
2061 lxc_conf
->console
.log_size
= log_size
;
2066 int append_unexp_config_line(const char *line
, struct lxc_conf
*conf
)
2069 size_t len
= conf
->unexpanded_len
;
2071 update_hwaddr(line
);
2073 linelen
= strlen(line
);
2074 while (conf
->unexpanded_alloced
<= len
+ linelen
+ 2) {
2075 char *tmp
= realloc(conf
->unexpanded_config
,
2076 conf
->unexpanded_alloced
+ 1024);
2080 if (!conf
->unexpanded_config
)
2083 conf
->unexpanded_config
= tmp
;
2084 conf
->unexpanded_alloced
+= 1024;
2087 memcpy(conf
->unexpanded_config
+ conf
->unexpanded_len
, line
, linelen
);
2088 conf
->unexpanded_len
+= linelen
;
2089 if (line
[linelen
- 1] != '\n')
2090 conf
->unexpanded_config
[conf
->unexpanded_len
++] = '\n';
2091 conf
->unexpanded_config
[conf
->unexpanded_len
] = '\0';
2096 static int do_includedir(const char *dirp
, struct lxc_conf
*lxc_conf
)
2098 struct dirent
*direntp
;
2100 char path
[PATH_MAX
];
2104 dir
= opendir(dirp
);
2108 while ((direntp
= readdir(dir
))) {
2111 fnam
= direntp
->d_name
;
2112 if (!strcmp(fnam
, "."))
2115 if (!strcmp(fnam
, ".."))
2119 if (len
< 6 || strncmp(fnam
+ len
- 5, ".conf", 5) != 0)
2122 len
= snprintf(path
, PATH_MAX
, "%s/%s", dirp
, fnam
);
2123 if (len
< 0 || len
>= PATH_MAX
) {
2128 ret
= lxc_config_read(path
, lxc_conf
, true);
2140 static int set_config_includefiles(const char *key
, const char *value
,
2141 struct lxc_conf
*lxc_conf
, void *data
)
2143 if (lxc_config_value_empty(value
)) {
2144 clr_config_includefiles(key
, lxc_conf
, NULL
);
2149 return do_includedir(value
, lxc_conf
);
2151 return lxc_config_read(value
, lxc_conf
, true);
2154 static int set_config_rootfs_path(const char *key
, const char *value
,
2155 struct lxc_conf
*lxc_conf
, void *data
)
2159 const char *container_path
;
2161 if (lxc_config_value_empty(value
)) {
2162 free(lxc_conf
->rootfs
.path
);
2163 lxc_conf
->rootfs
.path
= NULL
;
2167 dup
= strdup(value
);
2171 /* Split <storage type>:<container path> into <storage type> and
2172 * <container path>. Set "rootfs.bdev_type" to <storage type> and
2173 * "rootfs.path" to <container path>.
2175 tmp
= strchr(dup
, ':');
2179 ret
= set_config_path_item(&lxc_conf
->rootfs
.bdev_type
, dup
);
2186 container_path
= tmp
;
2188 container_path
= value
;
2191 ret
= set_config_path_item(&lxc_conf
->rootfs
.path
, container_path
);
2197 static int set_config_rootfs_managed(const char *key
, const char *value
,
2198 struct lxc_conf
*lxc_conf
, void *data
)
2200 unsigned int val
= 0;
2202 if (lxc_config_value_empty(value
)) {
2203 lxc_conf
->rootfs
.managed
= true;
2207 if (lxc_safe_uint(value
, &val
) < 0)
2212 lxc_conf
->rootfs
.managed
= false;
2215 lxc_conf
->rootfs
.managed
= true;
2222 static int set_config_rootfs_mount(const char *key
, const char *value
,
2223 struct lxc_conf
*lxc_conf
, void *data
)
2225 return set_config_path_item(&lxc_conf
->rootfs
.mount
, value
);
2228 static int set_config_rootfs_options(const char *key
, const char *value
,
2229 struct lxc_conf
*lxc_conf
, void *data
)
2232 unsigned long mflags
= 0, pflags
= 0;
2233 char *mdata
= NULL
, *opts
= NULL
;
2234 struct lxc_rootfs
*rootfs
= &lxc_conf
->rootfs
;
2236 ret
= parse_mntopts(value
, &mflags
, &mdata
);
2240 ret
= parse_propagationopts(value
, &pflags
);
2246 ret
= set_config_string_item(&opts
, value
);
2252 rootfs
->mountflags
= mflags
| pflags
;
2253 rootfs
->options
= opts
;
2254 rootfs
->data
= mdata
;
2259 static int set_config_uts_name(const char *key
, const char *value
,
2260 struct lxc_conf
*lxc_conf
, void *data
)
2262 struct utsname
*utsname
;
2264 if (lxc_config_value_empty(value
)) {
2265 clr_config_uts_name(key
, lxc_conf
, NULL
);
2269 utsname
= malloc(sizeof(*utsname
));
2273 if (strlen(value
) >= sizeof(utsname
->nodename
)) {
2278 (void)strlcpy(utsname
->nodename
, value
, sizeof(utsname
->nodename
));
2279 free(lxc_conf
->utsname
);
2280 lxc_conf
->utsname
= utsname
;
2285 static int set_config_namespace_clone(const char *key
, const char *value
,
2286 struct lxc_conf
*lxc_conf
, void *data
)
2291 if (lxc_config_value_empty(value
))
2292 return clr_config_namespace_clone(key
, lxc_conf
, data
);
2294 if (lxc_conf
->ns_keep
!= 0) {
2296 SYSERROR("Cannot set both \"lxc.namespace.clone\" and "
2297 "\"lxc.namespace.keep\"");
2305 lxc_iterate_parts(token
, ns
, " \t") {
2306 token
+= lxc_char_left_gc(token
, strlen(token
));
2307 token
[lxc_char_right_gc(token
, strlen(token
))] = '\0';
2308 cloneflag
= lxc_namespace_2_cloneflag(token
);
2309 if (cloneflag
< 0) {
2313 lxc_conf
->ns_clone
|= cloneflag
;
2320 static int set_config_namespace_keep(const char *key
, const char *value
,
2321 struct lxc_conf
*lxc_conf
, void *data
)
2326 if (lxc_config_value_empty(value
))
2327 return clr_config_namespace_keep(key
, lxc_conf
, data
);
2329 if (lxc_conf
->ns_clone
!= 0) {
2331 SYSERROR("Cannot set both \"lxc.namespace.clone\" and "
2332 "\"lxc.namespace.keep\"");
2340 lxc_iterate_parts(token
, ns
, " \t") {
2341 token
+= lxc_char_left_gc(token
, strlen(token
));
2342 token
[lxc_char_right_gc(token
, strlen(token
))] = '\0';
2343 cloneflag
= lxc_namespace_2_cloneflag(token
);
2344 if (cloneflag
< 0) {
2348 lxc_conf
->ns_keep
|= cloneflag
;
2355 static int set_config_namespace_share(const char *key
, const char *value
,
2356 struct lxc_conf
*lxc_conf
, void *data
)
2359 const char *namespace;
2361 if (lxc_config_value_empty(value
))
2362 return clr_config_namespace_share(key
, lxc_conf
, data
);
2364 namespace = key
+ STRLITERALLEN("lxc.namespace.share.");
2365 ns_idx
= lxc_namespace_2_ns_idx(namespace);
2369 return set_config_string_item(&lxc_conf
->ns_share
[ns_idx
], value
);
2372 struct parse_line_conf
{
2373 struct lxc_conf
*conf
;
2377 static int parse_line(char *buffer
, void *data
)
2379 char *dot
, *key
, *line
, *linep
, *value
;
2381 struct lxc_config_t
*config
;
2384 struct parse_line_conf
*plc
= data
;
2386 /* If there are newlines in the config file we should keep them. */
2387 empty_line
= lxc_is_line_empty(dup
);
2391 /* We have to dup the buffer otherwise, at the re-exec for reboot we
2392 * modified the original string on the stack by replacing '=' by '\0'
2395 linep
= line
= strdup(dup
);
2399 if (!plc
->from_include
) {
2400 ret
= append_unexp_config_line(line
, plc
->conf
);
2408 line
+= lxc_char_left_gc(line
, strlen(line
));
2410 /* ignore comments */
2414 /* martian option - don't add it to the config itself */
2415 if (strncmp(line
, "lxc.", 4))
2420 dot
= strchr(line
, '=');
2422 ERROR("Invalid configuration line: %s", line
);
2430 key
[lxc_char_right_gc(key
, strlen(key
))] = '\0';
2432 value
+= lxc_char_left_gc(value
, strlen(value
));
2433 value
[lxc_char_right_gc(value
, strlen(value
))] = '\0';
2435 if (*value
== '\'' || *value
== '\"') {
2438 len
= strlen(value
);
2439 if (len
> 1 && value
[len
- 1] == *value
) {
2440 value
[len
- 1] = '\0';
2445 config
= lxc_get_config(key
);
2447 ERROR("Unknown configuration key \"%s\"", key
);
2451 ret
= config
->set(key
, value
, plc
->conf
, NULL
);
2459 static struct new_config_item
*parse_new_conf_line(char *buffer
)
2461 char *dot
, *key
, *line
, *linep
, *value
;
2464 struct new_config_item
*new = NULL
;
2466 linep
= line
= strdup(dup
);
2470 line
+= lxc_char_left_gc(line
, strlen(line
));
2472 /* martian option - don't add it to the config itself */
2473 if (strncmp(line
, "lxc.", 4))
2477 dot
= strchr(line
, '=');
2479 ERROR("Invalid configuration item: %s", line
);
2487 key
[lxc_char_right_gc(key
, strlen(key
))] = '\0';
2489 value
+= lxc_char_left_gc(value
, strlen(value
));
2490 value
[lxc_char_right_gc(value
, strlen(value
))] = '\0';
2492 if (*value
== '\'' || *value
== '\"') {
2495 len
= strlen(value
);
2496 if (len
> 1 && value
[len
- 1] == *value
) {
2497 value
[len
- 1] = '\0';
2503 new = malloc(sizeof(struct new_config_item
));
2507 new->key
= strdup(key
);
2508 new->val
= strdup(value
);
2509 if (!new->val
|| !new->key
)
2517 if (ret
< 0 && new) {
2527 int lxc_config_read(const char *file
, struct lxc_conf
*conf
, bool from_include
)
2529 struct parse_line_conf c
;
2532 c
.from_include
= from_include
;
2534 /* Catch only the top level config file name in the structure. */
2536 conf
->rcfile
= strdup(file
);
2538 return lxc_file_for_each_line_mmap(file
, parse_line
, &c
);
2541 int lxc_config_define_add(struct lxc_list
*defines
, char *arg
)
2543 struct lxc_list
*dent
;
2545 dent
= malloc(sizeof(struct lxc_list
));
2549 dent
->elem
= parse_new_conf_line(arg
);
2555 lxc_list_add_tail(defines
, dent
);
2560 bool lxc_config_define_load(struct lxc_list
*defines
, struct lxc_container
*c
)
2562 struct lxc_list
*it
;
2565 lxc_list_for_each(it
, defines
) {
2566 struct new_config_item
*new_item
= it
->elem
;
2567 bret
= c
->set_config_item(c
, new_item
->key
, new_item
->val
);
2572 lxc_config_define_free(defines
);
2577 void lxc_config_define_free(struct lxc_list
*defines
)
2579 struct lxc_list
*it
, *next
;
2581 lxc_list_for_each_safe(it
, defines
, next
) {
2582 struct new_config_item
*new_item
= it
->elem
;
2583 free(new_item
->key
);
2584 free(new_item
->val
);
2590 signed long lxc_config_parse_arch(const char *arch
)
2592 #if HAVE_SYS_PERSONALITY_H
2598 { "arm", PER_LINUX32
},
2599 { "armel", PER_LINUX32
},
2600 { "armhf", PER_LINUX32
},
2601 { "armv7l", PER_LINUX32
},
2602 { "athlon", PER_LINUX32
},
2603 { "i386", PER_LINUX32
},
2604 { "i486", PER_LINUX32
},
2605 { "i586", PER_LINUX32
},
2606 { "i686", PER_LINUX32
},
2607 { "linux32", PER_LINUX32
},
2608 { "mips", PER_LINUX32
},
2609 { "mipsel", PER_LINUX32
},
2610 { "ppc", PER_LINUX32
},
2611 { "powerpc", PER_LINUX32
},
2612 { "x86", PER_LINUX32
},
2613 { "amd64", PER_LINUX
},
2614 { "arm64", PER_LINUX
},
2615 { "linux64", PER_LINUX
},
2616 { "mips64", PER_LINUX
},
2617 { "mips64el", PER_LINUX
},
2618 { "ppc64", PER_LINUX
},
2619 { "ppc64el", PER_LINUX
},
2620 { "ppc64le", PER_LINUX
},
2621 { "powerpc64", PER_LINUX
},
2622 { "s390x", PER_LINUX
},
2623 { "x86_64", PER_LINUX
},
2625 size_t len
= sizeof(pername
) / sizeof(pername
[0]);
2627 for (i
= 0; i
< len
; i
++)
2628 if (!strcmp(pername
[i
].name
, arch
))
2629 return pername
[i
].per
;
2635 int lxc_fill_elevated_privileges(char *flaglist
, int *flags
)
2643 { "CGROUP", LXC_ATTACH_MOVE_TO_CGROUP
},
2644 { "CAP", LXC_ATTACH_DROP_CAPABILITIES
},
2645 { "LSM", LXC_ATTACH_LSM_EXEC
},
2650 /* For the sake of backward compatibility, drop all privileges
2651 * if none is specified.
2653 for (i
= 0; all_privs
[i
].token
; i
++)
2654 *flags
|= all_privs
[i
].flag
;
2659 lxc_iterate_parts(token
, flaglist
, "|") {
2662 for (i
= 0; all_privs
[i
].token
; i
++)
2663 if (!strcmp(all_privs
[i
].token
, token
))
2664 aflag
= all_privs
[i
].flag
;
2675 /* Write out a configuration file. */
2676 int write_config(int fd
, const struct lxc_conf
*conf
)
2679 size_t len
= conf
->unexpanded_len
;
2684 ret
= lxc_write_nointr(fd
, conf
->unexpanded_config
, len
);
2686 SYSERROR("Failed to write configuration file");
2693 bool do_append_unexp_config_line(struct lxc_conf
*conf
, const char *key
,
2700 len
= strlen(key
) + strlen(v
) + 4;
2703 if (lxc_config_value_empty(v
))
2704 ret
= snprintf(tmp
, len
, "%s =", key
);
2706 ret
= snprintf(tmp
, len
, "%s = %s", key
, v
);
2707 if (ret
< 0 || ret
>= len
)
2710 /* Save the line verbatim into unexpanded_conf */
2711 if (append_unexp_config_line(tmp
, conf
))
2717 void clear_unexp_config_line(struct lxc_conf
*conf
, const char *key
,
2721 char *lstart
= conf
->unexpanded_config
;
2723 if (!conf
->unexpanded_config
)
2727 lend
= strchr(lstart
, '\n');
2731 lend
= lstart
+ strlen(lstart
);
2735 if (strncmp(lstart
, key
, strlen(key
)) != 0) {
2741 v
= lstart
[strlen(key
)];
2742 if (!isspace(v
) && v
!= '=') {
2748 conf
->unexpanded_len
-= (lend
- lstart
);
2750 if (*lend
== '\0') {
2755 memmove(lstart
, lend
, strlen(lend
) + 1);
2759 bool clone_update_unexp_ovl_paths(struct lxc_conf
*conf
, const char *oldpath
,
2760 const char *newpath
, const char *oldname
,
2761 const char *newname
, const char *ovldir
)
2764 char *lend
, *newdir
, *olddir
, *p
, *q
;
2765 size_t newdirlen
, olddirlen
;
2766 char *lstart
= conf
->unexpanded_config
;
2767 const char *key
= "lxc.mount.entry";
2769 olddirlen
= strlen(ovldir
) + strlen(oldpath
) + strlen(oldname
) + 2;
2770 olddir
= alloca(olddirlen
+ 1);
2771 ret
= snprintf(olddir
, olddirlen
+ 1, "%s=%s/%s", ovldir
, oldpath
,
2773 if (ret
< 0 || ret
>= olddirlen
+ 1)
2776 newdirlen
= strlen(ovldir
) + strlen(newpath
) + strlen(newname
) + 2;
2777 newdir
= alloca(newdirlen
+ 1);
2778 ret
= snprintf(newdir
, newdirlen
+ 1, "%s=%s/%s", ovldir
, newpath
,
2780 if (ret
< 0 || ret
>= newdirlen
+ 1)
2783 if (!conf
->unexpanded_config
)
2787 lend
= strchr(lstart
, '\n');
2789 lend
= lstart
+ strlen(lstart
);
2793 if (strncmp(lstart
, key
, strlen(key
)) != 0)
2796 p
= strchr(lstart
+ strlen(key
), '=');
2807 /* Whenever a lxc.mount.entry entry is found in a line we check
2808 * if the substring "overlay" is present before doing any
2809 * further work. We check for "overlay" because substrings need
2810 * to have at least one space before them in a valid overlay
2811 * lxc.mount.entry (/A B overlay). When the space before is
2812 * missing it is very likely that these substrings are part of a
2813 * path or something else. (Checking q >= lend ensures that we
2814 * only count matches in the current line.) */
2815 q
= strstr(p
, " overlay");
2816 if (!q
|| q
>= lend
)
2819 if (!(q
= strstr(p
, olddir
)) || (q
>= lend
))
2822 /* replace the olddir with newdir */
2823 if (olddirlen
>= newdirlen
) {
2824 size_t diff
= olddirlen
- newdirlen
;
2825 memcpy(q
, newdir
, newdirlen
);
2827 if (olddirlen
!= newdirlen
) {
2828 memmove(q
+ newdirlen
, q
+ newdirlen
+ diff
,
2829 strlen(q
) - newdirlen
- diff
+ 1);
2831 conf
->unexpanded_len
-= diff
;
2835 size_t diff
= newdirlen
- olddirlen
;
2836 size_t oldlen
= conf
->unexpanded_len
;
2837 size_t newlen
= oldlen
+ diff
;
2838 size_t poffset
= q
- conf
->unexpanded_config
;
2840 new = realloc(conf
->unexpanded_config
, newlen
+ 1);
2844 conf
->unexpanded_len
= newlen
;
2845 conf
->unexpanded_alloced
= newlen
+ 1;
2846 new[newlen
- 1] = '\0';
2847 lend
= new + (lend
- conf
->unexpanded_config
);
2849 /* Move over the remainder to make room for the newdir.
2851 memmove(new + poffset
+ newdirlen
,
2852 new + poffset
+ olddirlen
,
2853 oldlen
- poffset
- olddirlen
+ 1);
2854 conf
->unexpanded_config
= new;
2856 memcpy(new + poffset
, newdir
, newdirlen
);
2867 bool clone_update_unexp_hooks(struct lxc_conf
*conf
, const char *oldpath
,
2868 const char *newpath
, const char *oldname
,
2869 const char *newname
)
2872 char *lend
, *newdir
, *olddir
, *p
;
2873 char *lstart
= conf
->unexpanded_config
;
2874 size_t newdirlen
, olddirlen
;
2875 const char *key
= "lxc.hook";
2877 olddirlen
= strlen(oldpath
) + strlen(oldname
) + 1;
2878 olddir
= alloca(olddirlen
+ 1);
2879 ret
= snprintf(olddir
, olddirlen
+ 1, "%s/%s", oldpath
, oldname
);
2880 if (ret
< 0 || ret
>= olddirlen
+ 1)
2883 newdirlen
= strlen(newpath
) + strlen(newname
) + 1;
2884 newdir
= alloca(newdirlen
+ 1);
2885 ret
= snprintf(newdir
, newdirlen
+ 1, "%s/%s", newpath
, newname
);
2886 if (ret
< 0 || ret
>= newdirlen
+ 1)
2889 if (!conf
->unexpanded_config
)
2893 lend
= strchr(lstart
, '\n');
2895 lend
= lstart
+ strlen(lstart
);
2899 if (strncmp(lstart
, key
, strlen(key
)) != 0)
2902 p
= strchr(lstart
+ strlen(key
), '=');
2913 if (strncmp(p
, olddir
, strlen(olddir
)) != 0)
2916 /* replace the olddir with newdir */
2917 if (olddirlen
>= newdirlen
) {
2918 size_t diff
= olddirlen
- newdirlen
;
2919 memcpy(p
, newdir
, newdirlen
);
2921 if (olddirlen
!= newdirlen
) {
2922 memmove(p
+ newdirlen
, p
+ newdirlen
+ diff
,
2923 strlen(p
) - newdirlen
- diff
+ 1);
2925 conf
->unexpanded_len
-= diff
;
2929 size_t diff
= newdirlen
- olddirlen
;
2930 size_t oldlen
= conf
->unexpanded_len
;
2931 size_t newlen
= oldlen
+ diff
;
2932 size_t poffset
= p
- conf
->unexpanded_config
;
2934 new = realloc(conf
->unexpanded_config
, newlen
+ 1);
2938 conf
->unexpanded_len
= newlen
;
2939 conf
->unexpanded_alloced
= newlen
+ 1;
2940 new[newlen
- 1] = '\0';
2941 lend
= new + (lend
- conf
->unexpanded_config
);
2943 /* Move over the remainder to make room for the newdir.
2945 memmove(new + poffset
+ newdirlen
,
2946 new + poffset
+ olddirlen
,
2947 oldlen
- poffset
- olddirlen
+ 1);
2948 conf
->unexpanded_config
= new;
2950 memcpy(new + poffset
, newdir
, newdirlen
);
2964 ERROR("Error writing to new config"); \
2969 /* This is called only from clone. We wish to update all hwaddrs in the
2970 * unexpanded config file. We can't/don't want to update any which come from
2971 * lxc.includes (there shouldn't be any).
2972 * We can't just walk the c->lxc-conf->network list because that includes netifs
2973 * from the include files. So we update the ones which we find in the unexp
2974 * config file, then find the original macaddr in the conf->network, and update
2975 * that to the same value.
2977 bool network_new_hwaddrs(struct lxc_conf
*conf
)
2979 char *lend
, *p
, *p2
;
2980 struct lxc_list
*it
;
2981 char *lstart
= conf
->unexpanded_config
;
2983 if (!conf
->unexpanded_config
)
2987 char newhwaddr
[18], oldhwaddr
[17];
2989 lend
= strchr(lstart
, '\n');
2991 lend
= lstart
+ strlen(lstart
);
2995 if (!lxc_config_net_hwaddr(lstart
)) {
3000 p
= strchr(lstart
, '=');
3013 while (*p2
&& !isblank(*p2
) && *p2
!= '\n')
3016 if ((p2
- p
) != 17) {
3017 WARN("Bad hwaddr entry");
3022 memcpy(oldhwaddr
, p
, 17);
3024 if (!new_hwaddr(newhwaddr
))
3027 memcpy(p
, newhwaddr
, 17);
3028 lxc_list_for_each(it
, &conf
->network
) {
3029 struct lxc_netdev
*n
= it
->elem
;
3031 if (n
->hwaddr
&& memcmp(oldhwaddr
, n
->hwaddr
, 17) == 0)
3032 memcpy(n
->hwaddr
, newhwaddr
, 17);
3041 static int set_config_ephemeral(const char *key
, const char *value
,
3042 struct lxc_conf
*lxc_conf
, void *data
)
3044 if (lxc_config_value_empty(value
)) {
3045 lxc_conf
->ephemeral
= 0;
3049 if (lxc_safe_uint(value
, &lxc_conf
->ephemeral
) < 0)
3052 if (lxc_conf
->ephemeral
> 1)
3058 static int set_config_log_syslog(const char *key
, const char *value
,
3059 struct lxc_conf
*lxc_conf
, void *data
)
3063 if (lxc_conf
->syslog
) {
3064 free(lxc_conf
->syslog
);
3065 lxc_conf
->syslog
= NULL
;
3068 if (lxc_config_value_empty(value
))
3071 facility
= lxc_syslog_priority_to_int(value
);
3072 if (facility
== -EINVAL
)
3075 lxc_log_syslog(facility
);
3077 return set_config_string_item(&lxc_conf
->syslog
, value
);
3080 static int set_config_no_new_privs(const char *key
, const char *value
,
3081 struct lxc_conf
*lxc_conf
, void *data
)
3085 if (lxc_config_value_empty(value
)) {
3086 lxc_conf
->no_new_privs
= false;
3090 if (lxc_safe_uint(value
, &v
) < 0)
3096 lxc_conf
->no_new_privs
= v
? true : false;
3101 /* Callbacks to get configuration items. */
3102 static int get_config_personality(const char *key
, char *retv
, int inlen
,
3103 struct lxc_conf
*c
, void *data
)
3110 memset(retv
, 0, inlen
);
3112 #if HAVE_SYS_PERSONALITY_H
3115 switch (c
->personality
) {
3117 strprint(retv
, inlen
, "i686");
3120 strprint(retv
, inlen
, "x86_64");
3130 static int get_config_pty_max(const char *key
, char *retv
, int inlen
,
3131 struct lxc_conf
*c
, void *data
)
3133 return lxc_get_conf_size_t(c
, retv
, inlen
, c
->pty_max
);
3136 static int get_config_tty_max(const char *key
, char *retv
, int inlen
,
3137 struct lxc_conf
*c
, void *data
)
3139 return lxc_get_conf_size_t(c
, retv
, inlen
, c
->ttys
.max
);
3142 static int get_config_tty_dir(const char *key
, char *retv
, int inlen
,
3143 struct lxc_conf
*c
, void *data
)
3145 return lxc_get_conf_str(retv
, inlen
, c
->ttys
.dir
);
3148 static int get_config_apparmor_profile(const char *key
, char *retv
, int inlen
,
3149 struct lxc_conf
*c
, void *data
)
3151 return lxc_get_conf_str(retv
, inlen
, c
->lsm_aa_profile
);
3154 static int get_config_apparmor_allow_incomplete(const char *key
, char *retv
,
3155 int inlen
, struct lxc_conf
*c
,
3158 return lxc_get_conf_int(c
, retv
, inlen
,
3159 c
->lsm_aa_allow_incomplete
);
3162 static int get_config_apparmor_allow_nesting(const char *key
, char *retv
,
3163 int inlen
, struct lxc_conf
*c
,
3166 return lxc_get_conf_int(c
, retv
, inlen
,
3167 c
->lsm_aa_allow_nesting
);
3170 static int get_config_apparmor_raw(const char *key
, char *retv
,
3171 int inlen
, struct lxc_conf
*c
,
3175 struct lxc_list
*it
;
3181 memset(retv
, 0, inlen
);
3183 lxc_list_for_each(it
, &c
->lsm_aa_raw
) {
3184 strprint(retv
, inlen
, "%s\n", (char *)it
->elem
);
3190 static int get_config_selinux_context(const char *key
, char *retv
, int inlen
,
3191 struct lxc_conf
*c
, void *data
)
3193 return lxc_get_conf_str(retv
, inlen
, c
->lsm_se_context
);
3196 /* If you ask for a specific cgroup value, i.e. lxc.cgroup.devices.list, then
3197 * just the value(s) will be printed. Since there still could be more than one,
3198 * it is newline-separated.
3199 * (Maybe that's ambiguous, since some values, i.e. devices.list, will already
3201 * If you ask for 'lxc.cgroup", then all cgroup entries will be printed, in
3202 * 'lxc.cgroup.subsystem.key = value' format.
3204 static int __get_config_cgroup_controller(const char *key
, char *retv
,
3205 int inlen
, struct lxc_conf
*c
,
3209 size_t namespaced_token_len
;
3210 char *global_token
, *namespaced_token
;
3211 struct lxc_list
*it
;
3213 bool get_all
= false;
3218 memset(retv
, 0, inlen
);
3220 if (version
== CGROUP2_SUPER_MAGIC
) {
3221 global_token
= "lxc.cgroup2";
3222 namespaced_token
= "lxc.cgroup2.";
3223 namespaced_token_len
= STRLITERALLEN("lxc.cgroup2.");
3224 } else if (version
== CGROUP_SUPER_MAGIC
) {
3225 global_token
= "lxc.cgroup";
3226 namespaced_token
= "lxc.cgroup.";
3227 namespaced_token_len
= STRLITERALLEN("lxc.cgroup.");
3232 if (strcmp(key
, global_token
) == 0)
3234 else if (strncmp(key
, namespaced_token
, namespaced_token_len
) == 0)
3235 key
+= namespaced_token_len
;
3239 lxc_list_for_each(it
, &c
->cgroup
) {
3240 struct lxc_cgroup
*cg
= it
->elem
;
3243 if (version
!= cg
->version
)
3246 strprint(retv
, inlen
, "%s.%s = %s\n", global_token
,
3247 cg
->subsystem
, cg
->value
);
3248 } else if (strcmp(cg
->subsystem
, key
) == 0) {
3249 strprint(retv
, inlen
, "%s\n", cg
->value
);
3256 static int get_config_cgroup_controller(const char *key
, char *retv
, int inlen
,
3257 struct lxc_conf
*c
, void *data
)
3259 return __get_config_cgroup_controller(key
, retv
, inlen
, c
,
3260 CGROUP_SUPER_MAGIC
);
3263 static int get_config_cgroup2_controller(const char *key
, char *retv
, int inlen
,
3264 struct lxc_conf
*c
, void *data
)
3266 return __get_config_cgroup_controller(key
, retv
, inlen
, c
,
3267 CGROUP2_SUPER_MAGIC
);
3270 static int get_config_cgroup_dir(const char *key
, char *retv
, int inlen
,
3271 struct lxc_conf
*lxc_conf
, void *data
)
3279 memset(retv
, 0, inlen
);
3281 strprint(retv
, inlen
, "%s", lxc_conf
->cgroup_meta
.dir
);
3286 static inline int get_config_cgroup_relative(const char *key
, char *retv
,
3287 int inlen
, struct lxc_conf
*lxc_conf
,
3290 return lxc_get_conf_int(lxc_conf
, retv
, inlen
,
3291 lxc_conf
->cgroup_meta
.relative
);
3294 static int get_config_idmaps(const char *key
, char *retv
, int inlen
,
3295 struct lxc_conf
*c
, void *data
)
3297 struct lxc_list
*it
;
3298 int len
, listlen
, ret
;
3300 /* "u 1000 1000000 65536"
3302 * let's render this as
3320 #define __LXC_IDMAP_STR_BUF (3 * INTTYPE_TO_STRLEN(uint32_t) + 3 + 1 + 1)
3321 char buf
[__LXC_IDMAP_STR_BUF
];
3326 memset(retv
, 0, inlen
);
3328 listlen
= lxc_list_len(&c
->id_map
);
3329 lxc_list_for_each(it
, &c
->id_map
) {
3330 struct id_map
*map
= it
->elem
;
3331 ret
= snprintf(buf
, __LXC_IDMAP_STR_BUF
, "%c %lu %lu %lu",
3332 (map
->idtype
== ID_TYPE_UID
) ? 'u' : 'g',
3333 map
->nsid
, map
->hostid
, map
->range
);
3334 if (ret
< 0 || ret
>= __LXC_IDMAP_STR_BUF
)
3337 strprint(retv
, inlen
, "%s%s", buf
, (listlen
-- > 1) ? "\n" : "");
3343 static int get_config_log_level(const char *key
, char *retv
, int inlen
,
3344 struct lxc_conf
*c
, void *data
)
3347 v
= lxc_log_priority_to_string(c
->loglevel
);
3348 return lxc_get_conf_str(retv
, inlen
, v
);
3351 static int get_config_log_file(const char *key
, char *retv
, int inlen
,
3352 struct lxc_conf
*c
, void *data
)
3354 return lxc_get_conf_str(retv
, inlen
, c
->logfile
);
3357 static int get_config_mount_fstab(const char *key
, char *retv
, int inlen
,
3358 struct lxc_conf
*c
, void *data
)
3360 return lxc_get_conf_str(retv
, inlen
, c
->fstab
);
3363 static int get_config_mount_auto(const char *key
, char *retv
, int inlen
,
3364 struct lxc_conf
*c
, void *data
)
3366 int len
, fulllen
= 0;
3367 const char *sep
= "";
3372 memset(retv
, 0, inlen
);
3374 if (!(c
->auto_mounts
& LXC_AUTO_ALL_MASK
))
3377 switch (c
->auto_mounts
& LXC_AUTO_PROC_MASK
) {
3378 case LXC_AUTO_PROC_MIXED
:
3379 strprint(retv
, inlen
, "%sproc:mixed", sep
);
3382 case LXC_AUTO_PROC_RW
:
3383 strprint(retv
, inlen
, "%sproc:rw", sep
);
3390 switch (c
->auto_mounts
& LXC_AUTO_SYS_MASK
) {
3391 case LXC_AUTO_SYS_RO
:
3392 strprint(retv
, inlen
, "%ssys:ro", sep
);
3395 case LXC_AUTO_SYS_RW
:
3396 strprint(retv
, inlen
, "%ssys:rw", sep
);
3399 case LXC_AUTO_SYS_MIXED
:
3400 strprint(retv
, inlen
, "%ssys:mixed", sep
);
3407 switch (c
->auto_mounts
& LXC_AUTO_CGROUP_MASK
) {
3408 case LXC_AUTO_CGROUP_NOSPEC
:
3409 strprint(retv
, inlen
, "%scgroup", sep
);
3411 case LXC_AUTO_CGROUP_MIXED
:
3412 strprint(retv
, inlen
, "%scgroup:mixed", sep
);
3414 case LXC_AUTO_CGROUP_RO
:
3415 strprint(retv
, inlen
, "%scgroup:ro", sep
);
3417 case LXC_AUTO_CGROUP_RW
:
3418 strprint(retv
, inlen
, "%scgroup:rw", sep
);
3420 case LXC_AUTO_CGROUP_FULL_NOSPEC
:
3421 strprint(retv
, inlen
, "%scgroup-full", sep
);
3423 case LXC_AUTO_CGROUP_FULL_MIXED
:
3424 strprint(retv
, inlen
, "%scgroup-full:mixed", sep
);
3426 case LXC_AUTO_CGROUP_FULL_RO
:
3427 strprint(retv
, inlen
, "%scgroup-full:ro", sep
);
3429 case LXC_AUTO_CGROUP_FULL_RW
:
3430 strprint(retv
, inlen
, "%scgroup-full:rw", sep
);
3439 static int get_config_mount(const char *key
, char *retv
, int inlen
,
3440 struct lxc_conf
*c
, void *data
)
3442 int len
, fulllen
= 0;
3443 struct lxc_list
*it
;
3448 memset(retv
, 0, inlen
);
3450 lxc_list_for_each(it
, &c
->mount_list
) {
3451 strprint(retv
, inlen
, "%s\n", (char *)it
->elem
);
3457 static int get_config_rootfs_path(const char *key
, char *retv
, int inlen
,
3458 struct lxc_conf
*c
, void *data
)
3460 return lxc_get_conf_str(retv
, inlen
, c
->rootfs
.path
);
3463 static int get_config_rootfs_managed(const char *key
, char *retv
, int inlen
,
3464 struct lxc_conf
*c
, void *data
)
3466 return lxc_get_conf_bool(c
, retv
, inlen
, c
->rootfs
.managed
);
3469 static int get_config_rootfs_mount(const char *key
, char *retv
, int inlen
,
3470 struct lxc_conf
*c
, void *data
)
3472 return lxc_get_conf_str(retv
, inlen
, c
->rootfs
.mount
);
3475 static int get_config_rootfs_options(const char *key
, char *retv
, int inlen
,
3476 struct lxc_conf
*c
, void *data
)
3478 return lxc_get_conf_str(retv
, inlen
, c
->rootfs
.options
);
3481 static int get_config_uts_name(const char *key
, char *retv
, int inlen
,
3482 struct lxc_conf
*c
, void *data
)
3484 return lxc_get_conf_str(
3486 c
->utsname
? c
->utsname
->nodename
: NULL
);
3489 static int get_config_hooks(const char *key
, char *retv
, int inlen
,
3490 struct lxc_conf
*c
, void *data
)
3493 int len
, fulllen
= 0, found
= -1;
3494 struct lxc_list
*it
;
3497 subkey
= strchr(key
, '.');
3501 subkey
= strchr(subkey
+ 1, '.');
3505 if (*subkey
== '\0')
3508 for (i
= 0; i
< NUM_LXC_HOOKS
; i
++) {
3509 if (strcmp(lxchook_names
[i
], subkey
) == 0) {
3521 memset(retv
, 0, inlen
);
3523 lxc_list_for_each(it
, &c
->hooks
[found
]) {
3524 strprint(retv
, inlen
, "%s\n", (char *)it
->elem
);
3530 static int get_config_hooks_version(const char *key
, char *retv
, int inlen
,
3531 struct lxc_conf
*c
, void *data
)
3533 return lxc_get_conf_int(c
, retv
, inlen
, c
->hooks_version
);
3536 static int get_config_net(const char *key
, char *retv
, int inlen
,
3537 struct lxc_conf
*c
, void *data
)
3539 int len
, fulllen
= 0;
3540 struct lxc_list
*it
;
3545 memset(retv
, 0, inlen
);
3547 lxc_list_for_each(it
, &c
->network
) {
3548 struct lxc_netdev
*n
= it
->elem
;
3549 const char *t
= lxc_net_type_to_str(n
->type
);
3550 strprint(retv
, inlen
, "%s\n", t
? t
: "(invalid)");
3556 static int get_config_cap_drop(const char *key
, char *retv
, int inlen
,
3557 struct lxc_conf
*c
, void *data
)
3559 int len
, fulllen
= 0;
3560 struct lxc_list
*it
;
3565 memset(retv
, 0, inlen
);
3567 lxc_list_for_each(it
, &c
->caps
) {
3568 strprint(retv
, inlen
, "%s\n", (char *)it
->elem
);
3574 static int get_config_cap_keep(const char *key
, char *retv
, int inlen
,
3575 struct lxc_conf
*c
, void *data
)
3577 int len
, fulllen
= 0;
3578 struct lxc_list
*it
;
3583 memset(retv
, 0, inlen
);
3585 lxc_list_for_each(it
, &c
->keepcaps
) {
3586 strprint(retv
, inlen
, "%s\n", (char *)it
->elem
);
3592 static int get_config_console_path(const char *key
, char *retv
, int inlen
,
3593 struct lxc_conf
*c
, void *data
)
3595 return lxc_get_conf_str(retv
, inlen
, c
->console
.path
);
3598 static int get_config_console_logfile(const char *key
, char *retv
, int inlen
,
3599 struct lxc_conf
*c
, void *data
)
3601 return lxc_get_conf_str(retv
, inlen
, c
->console
.log_path
);
3604 static int get_config_console_rotate(const char *key
, char *retv
, int inlen
,
3605 struct lxc_conf
*c
, void *data
)
3607 return lxc_get_conf_int(c
, retv
, inlen
, c
->console
.log_rotate
);
3611 static int get_config_console_buffer_size(const char *key
, char *retv
,
3612 int inlen
, struct lxc_conf
*c
,
3615 return lxc_get_conf_uint64(c
, retv
, inlen
, c
->console
.buffer_size
);
3618 static int get_config_console_size(const char *key
, char *retv
, int inlen
,
3619 struct lxc_conf
*c
, void *data
)
3621 return lxc_get_conf_uint64(c
, retv
, inlen
, c
->console
.log_size
);
3625 static int get_config_seccomp_profile(const char *key
, char *retv
, int inlen
,
3626 struct lxc_conf
*c
, void *data
)
3628 return lxc_get_conf_str(retv
, inlen
, c
->seccomp
);
3631 static int get_config_autodev(const char *key
, char *retv
, int inlen
,
3632 struct lxc_conf
*c
, void *data
)
3634 return lxc_get_conf_int(c
, retv
, inlen
, c
->autodev
);
3637 static int get_config_signal_halt(const char *key
, char *retv
, int inlen
,
3638 struct lxc_conf
*c
, void *data
)
3640 return lxc_get_conf_int(c
, retv
, inlen
, c
->haltsignal
);
3643 static int get_config_signal_reboot(const char *key
, char *retv
, int inlen
,
3644 struct lxc_conf
*c
, void *data
)
3646 return lxc_get_conf_int(c
, retv
, inlen
, c
->rebootsignal
);
3649 static int get_config_signal_stop(const char *key
, char *retv
, int inlen
,
3650 struct lxc_conf
*c
, void *data
)
3652 return lxc_get_conf_int(c
, retv
, inlen
, c
->stopsignal
);
3655 static int get_config_start(const char *key
, char *retv
, int inlen
,
3656 struct lxc_conf
*c
, void *data
)
3658 if (strcmp(key
+ 10, "auto") == 0)
3659 return lxc_get_conf_int(c
, retv
, inlen
, c
->start_auto
);
3660 else if (strcmp(key
+ 10, "delay") == 0)
3661 return lxc_get_conf_int(c
, retv
, inlen
, c
->start_delay
);
3662 else if (strcmp(key
+ 10, "order") == 0)
3663 return lxc_get_conf_int(c
, retv
, inlen
, c
->start_order
);
3668 static int get_config_log_syslog(const char *key
, char *retv
, int inlen
,
3669 struct lxc_conf
*c
, void *data
)
3671 return lxc_get_conf_str(retv
, inlen
, c
->syslog
);
3674 static int get_config_monitor(const char *key
, char *retv
, int inlen
,
3675 struct lxc_conf
*c
, void *data
)
3677 return lxc_get_conf_int(c
, retv
, inlen
, c
->monitor_unshare
);
3680 static int get_config_monitor_signal_pdeath(const char *key
, char *retv
,
3681 int inlen
, struct lxc_conf
*c
,
3684 return lxc_get_conf_int(c
, retv
, inlen
, c
->monitor_signal_pdeath
);
3687 static int get_config_group(const char *key
, char *retv
, int inlen
,
3688 struct lxc_conf
*c
, void *data
)
3690 int len
, fulllen
= 0;
3691 struct lxc_list
*it
;
3696 memset(retv
, 0, inlen
);
3698 lxc_list_for_each(it
, &c
->groups
) {
3699 strprint(retv
, inlen
, "%s\n", (char *)it
->elem
);
3705 static int get_config_environment(const char *key
, char *retv
, int inlen
,
3706 struct lxc_conf
*c
, void *data
)
3708 int len
, fulllen
= 0;
3709 struct lxc_list
*it
;
3714 memset(retv
, 0, inlen
);
3716 lxc_list_for_each(it
, &c
->environment
) {
3717 strprint(retv
, inlen
, "%s\n", (char *)it
->elem
);
3723 static int get_config_execute_cmd(const char *key
, char *retv
, int inlen
,
3724 struct lxc_conf
*c
, void *data
)
3726 return lxc_get_conf_str(retv
, inlen
, c
->execute_cmd
);
3729 static int get_config_init_cmd(const char *key
, char *retv
, int inlen
,
3730 struct lxc_conf
*c
, void *data
)
3732 return lxc_get_conf_str(retv
, inlen
, c
->init_cmd
);
3735 static int get_config_init_cwd(const char *key
, char *retv
, int inlen
,
3736 struct lxc_conf
*c
, void *data
)
3738 return lxc_get_conf_str(retv
, inlen
, c
->init_cwd
);
3741 static int get_config_init_uid(const char *key
, char *retv
, int inlen
,
3742 struct lxc_conf
*c
, void *data
)
3744 return lxc_get_conf_int(c
, retv
, inlen
, c
->init_uid
);
3747 static int get_config_init_gid(const char *key
, char *retv
, int inlen
,
3748 struct lxc_conf
*c
, void *data
)
3750 return lxc_get_conf_int(c
, retv
, inlen
, c
->init_gid
);
3753 static int get_config_ephemeral(const char *key
, char *retv
, int inlen
,
3754 struct lxc_conf
*c
, void *data
)
3756 return lxc_get_conf_int(c
, retv
, inlen
, c
->ephemeral
);
3759 static int get_config_no_new_privs(const char *key
, char *retv
, int inlen
,
3760 struct lxc_conf
*c
, void *data
)
3762 return lxc_get_conf_int(c
, retv
, inlen
, c
->no_new_privs
);
3765 /* If you ask for a specific value, i.e. lxc.prlimit.nofile, then just the value
3766 * will be printed. If you ask for 'lxc.prlimit', then all limit entries will be
3767 * printed, in 'lxc.prlimit.resource = value' format.
3769 static int get_config_prlimit(const char *key
, char *retv
, int inlen
,
3770 struct lxc_conf
*c
, void *data
)
3772 int fulllen
= 0, len
;
3773 bool get_all
= false;
3774 struct lxc_list
*it
;
3779 memset(retv
, 0, inlen
);
3781 if (!strcmp(key
, "lxc.prlimit"))
3783 else if (strncmp(key
, "lxc.prlimit.", 12) == 0)
3788 lxc_list_for_each(it
, &c
->limits
) {
3789 /* 2 colon separated 64 bit integers or the word 'unlimited' */
3790 char buf
[INTTYPE_TO_STRLEN(uint64_t) * 2 + 2];
3792 struct lxc_limit
*lim
= it
->elem
;
3794 if (lim
->limit
.rlim_cur
== RLIM_INFINITY
) {
3795 memcpy(buf
, "unlimited", STRLITERALLEN("unlimited") + 1);
3796 partlen
= STRLITERALLEN("unlimited");
3798 partlen
= sprintf(buf
, "%" PRIu64
,
3799 (uint64_t)lim
->limit
.rlim_cur
);
3802 if (lim
->limit
.rlim_cur
!= lim
->limit
.rlim_max
) {
3803 if (lim
->limit
.rlim_max
== RLIM_INFINITY
)
3804 memcpy(buf
+ partlen
, ":unlimited",
3805 STRLITERALLEN(":unlimited") + 1);
3807 sprintf(buf
+ partlen
, ":%" PRIu64
,
3808 (uint64_t)lim
->limit
.rlim_max
);
3812 strprint(retv
, inlen
, "lxc.prlimit.%s = %s\n",
3813 lim
->resource
, buf
);
3814 } else if (strcmp(lim
->resource
, key
) == 0) {
3815 strprint(retv
, inlen
, "%s", buf
);
3822 /* If you ask for a specific value, i.e. lxc.sysctl.net.ipv4.ip_forward, then
3823 * just the value will be printed. If you ask for 'lxc.sysctl', then all sysctl
3824 * entries will be printed, in 'lxc.sysctl.key = value' format.
3826 static int get_config_sysctl(const char *key
, char *retv
, int inlen
,
3827 struct lxc_conf
*c
, void *data
)
3830 struct lxc_list
*it
;
3832 bool get_all
= false;
3837 memset(retv
, 0, inlen
);
3839 if (strcmp(key
, "lxc.sysctl") == 0)
3841 else if (strncmp(key
, "lxc.sysctl.", STRLITERALLEN("lxc.sysctl.")) == 0)
3842 key
+= STRLITERALLEN("lxc.sysctl.");
3846 lxc_list_for_each(it
, &c
->sysctls
) {
3847 struct lxc_sysctl
*elem
= it
->elem
;
3849 strprint(retv
, inlen
, "lxc.sysctl.%s = %s\n", elem
->key
,
3851 } else if (strcmp(elem
->key
, key
) == 0) {
3852 strprint(retv
, inlen
, "%s", elem
->value
);
3859 static int get_config_proc(const char *key
, char *retv
, int inlen
,
3860 struct lxc_conf
*c
, void *data
)
3862 struct lxc_list
*it
;
3865 bool get_all
= false;
3870 memset(retv
, 0, inlen
);
3872 if (strcmp(key
, "lxc.proc") == 0)
3874 else if (strncmp(key
, "lxc.proc.", STRLITERALLEN("lxc.proc.")) == 0)
3875 key
+= STRLITERALLEN("lxc.proc.");
3879 lxc_list_for_each(it
, &c
->procs
) {
3880 struct lxc_proc
*proc
= it
->elem
;
3883 strprint(retv
, inlen
, "lxc.proc.%s = %s\n",
3884 proc
->filename
, proc
->value
);
3885 } else if (strcmp(proc
->filename
, key
) == 0) {
3886 strprint(retv
, inlen
, "%s", proc
->value
);
3893 static int get_config_namespace_clone(const char *key
, char *retv
, int inlen
,
3894 struct lxc_conf
*c
, void *data
)
3902 memset(retv
, 0, inlen
);
3904 for (i
= 0; i
< LXC_NS_MAX
; i
++) {
3905 if (c
->ns_clone
& ns_info
[i
].clone_flag
)
3906 strprint(retv
, inlen
, "%s\n", ns_info
[i
].proc_name
);
3912 static int get_config_namespace_keep(const char *key
, char *retv
, int inlen
,
3913 struct lxc_conf
*c
, void *data
)
3921 memset(retv
, 0, inlen
);
3923 for (i
= 0; i
< LXC_NS_MAX
; i
++) {
3924 if (c
->ns_keep
& ns_info
[i
].clone_flag
)
3925 strprint(retv
, inlen
, "%s\n", ns_info
[i
].proc_name
);
3931 static int get_config_namespace_share(const char *key
, char *retv
, int inlen
,
3932 struct lxc_conf
*c
, void *data
)
3935 const char *namespace;
3941 memset(retv
, 0, inlen
);
3943 namespace = key
+ STRLITERALLEN("lxc.namespace.share.");
3944 ns_idx
= lxc_namespace_2_ns_idx(namespace);
3948 strprint(retv
, inlen
, "%s", c
->ns_share
[ns_idx
]);
3953 /* Callbacks to clear config items. */
3954 static inline int clr_config_personality(const char *key
, struct lxc_conf
*c
,
3957 c
->personality
= -1;
3961 static inline int clr_config_pty_max(const char *key
, struct lxc_conf
*c
,
3968 static inline int clr_config_tty_max(const char *key
, struct lxc_conf
*c
,
3975 static inline int clr_config_tty_dir(const char *key
, struct lxc_conf
*c
,
3983 static inline int clr_config_apparmor_profile(const char *key
,
3984 struct lxc_conf
*c
, void *data
)
3986 free(c
->lsm_aa_profile
);
3987 c
->lsm_aa_profile
= NULL
;
3991 static inline int clr_config_apparmor_allow_incomplete(const char *key
,
3995 c
->lsm_aa_allow_incomplete
= 0;
3999 static inline int clr_config_apparmor_allow_nesting(const char *key
,
4003 c
->lsm_aa_allow_nesting
= 0;
4007 static inline int clr_config_apparmor_raw(const char *key
,
4011 return lxc_clear_apparmor_raw(c
);
4014 static inline int clr_config_selinux_context(const char *key
,
4015 struct lxc_conf
*c
, void *data
)
4017 free(c
->lsm_se_context
);
4018 c
->lsm_se_context
= NULL
;
4022 static inline int clr_config_cgroup_controller(const char *key
,
4023 struct lxc_conf
*c
, void *data
)
4025 return lxc_clear_cgroups(c
, key
, CGROUP_SUPER_MAGIC
);
4028 static inline int clr_config_cgroup2_controller(const char *key
,
4029 struct lxc_conf
*c
, void *data
)
4031 return lxc_clear_cgroups(c
, key
, CGROUP2_SUPER_MAGIC
);
4034 static int clr_config_cgroup_dir(const char *key
, struct lxc_conf
*lxc_conf
,
4037 if (lxc_conf
->cgroup_meta
.dir
) {
4038 free(lxc_conf
->cgroup_meta
.dir
);
4039 lxc_conf
->cgroup_meta
.dir
= NULL
;
4045 static inline int clr_config_cgroup_relative(const char *key
,
4046 struct lxc_conf
*lxc_conf
,
4049 lxc_conf
->cgroup_meta
.relative
= false;
4053 static inline int clr_config_idmaps(const char *key
, struct lxc_conf
*c
,
4056 return lxc_clear_idmaps(c
);
4059 static inline int clr_config_log_level(const char *key
, struct lxc_conf
*c
,
4062 c
->loglevel
= LXC_LOG_LEVEL_NOTSET
;
4066 static inline int clr_config_log_file(const char *key
, struct lxc_conf
*c
,
4074 static inline int clr_config_mount(const char *key
, struct lxc_conf
*c
,
4077 return lxc_clear_mount_entries(c
);
4080 static inline int clr_config_mount_auto(const char *key
, struct lxc_conf
*c
,
4083 return lxc_clear_automounts(c
);
4086 static inline int clr_config_mount_fstab(const char *key
, struct lxc_conf
*c
,
4094 static inline int clr_config_rootfs_path(const char *key
, struct lxc_conf
*c
,
4097 free(c
->rootfs
.path
);
4098 c
->rootfs
.path
= NULL
;
4102 static inline int clr_config_rootfs_managed(const char *key
, struct lxc_conf
*c
,
4105 c
->rootfs
.managed
= true;
4109 static inline int clr_config_rootfs_mount(const char *key
, struct lxc_conf
*c
,
4112 free(c
->rootfs
.mount
);
4113 c
->rootfs
.mount
= NULL
;
4117 static inline int clr_config_rootfs_options(const char *key
, struct lxc_conf
*c
,
4120 free(c
->rootfs
.options
);
4121 c
->rootfs
.options
= NULL
;
4123 free(c
->rootfs
.data
);
4124 c
->rootfs
.data
= NULL
;
4129 static inline int clr_config_uts_name(const char *key
, struct lxc_conf
*c
,
4137 static inline int clr_config_hooks(const char *key
, struct lxc_conf
*c
,
4140 return lxc_clear_hooks(c
, key
);
4143 static inline int clr_config_hooks_version(const char *key
, struct lxc_conf
*c
,
4146 /* default to legacy hooks version */
4147 c
->hooks_version
= 0;
4151 static inline int clr_config_net(const char *key
, struct lxc_conf
*c
,
4154 lxc_free_networks(&c
->network
);
4159 static inline int clr_config_cap_drop(const char *key
, struct lxc_conf
*c
,
4162 return lxc_clear_config_caps(c
);
4165 static inline int clr_config_cap_keep(const char *key
, struct lxc_conf
*c
,
4168 return lxc_clear_config_keepcaps(c
);
4171 static inline int clr_config_console_path(const char *key
, struct lxc_conf
*c
,
4174 free(c
->console
.path
);
4175 c
->console
.path
= NULL
;
4179 static inline int clr_config_console_logfile(const char *key
,
4180 struct lxc_conf
*c
, void *data
)
4182 free(c
->console
.log_path
);
4183 c
->console
.log_path
= NULL
;
4187 static inline int clr_config_console_rotate(const char *key
, struct lxc_conf
*c
,
4190 c
->console
.log_rotate
= 0;
4194 static inline int clr_config_console_buffer_size(const char *key
,
4195 struct lxc_conf
*c
, void *data
)
4197 c
->console
.buffer_size
= 0;
4201 static inline int clr_config_console_size(const char *key
, struct lxc_conf
*c
,
4204 c
->console
.log_size
= 0;
4208 static inline int clr_config_seccomp_profile(const char *key
,
4209 struct lxc_conf
*c
, void *data
)
4216 static inline int clr_config_autodev(const char *key
, struct lxc_conf
*c
,
4223 static inline int clr_config_signal_halt(const char *key
, struct lxc_conf
*c
,
4230 static inline int clr_config_signal_reboot(const char *key
, struct lxc_conf
*c
,
4233 c
->rebootsignal
= 0;
4237 static inline int clr_config_signal_stop(const char *key
, struct lxc_conf
*c
,
4244 static inline int clr_config_start(const char *key
, struct lxc_conf
*c
,
4247 if (strcmp(key
+ 10, "auto") == 0)
4249 else if (strcmp(key
+ 10, "delay") == 0)
4251 else if (strcmp(key
+ 10, "order") == 0)
4257 static inline int clr_config_log_syslog(const char *key
, struct lxc_conf
*c
,
4265 static inline int clr_config_monitor(const char *key
, struct lxc_conf
*c
,
4268 c
->monitor_unshare
= 0;
4272 static inline int clr_config_monitor_signal_pdeath(const char *key
,
4273 struct lxc_conf
*c
, void *data
)
4275 c
->monitor_signal_pdeath
= 0;
4279 static inline int clr_config_group(const char *key
, struct lxc_conf
*c
,
4282 return lxc_clear_groups(c
);
4285 static inline int clr_config_environment(const char *key
, struct lxc_conf
*c
,
4288 return lxc_clear_environment(c
);
4291 static inline int clr_config_execute_cmd(const char *key
, struct lxc_conf
*c
,
4294 free(c
->execute_cmd
);
4295 c
->execute_cmd
= NULL
;
4299 static inline int clr_config_init_cmd(const char *key
, struct lxc_conf
*c
,
4307 static inline int clr_config_init_cwd(const char *key
, struct lxc_conf
*c
,
4315 static inline int clr_config_init_uid(const char *key
, struct lxc_conf
*c
,
4322 static inline int clr_config_init_gid(const char *key
, struct lxc_conf
*c
,
4329 static inline int clr_config_ephemeral(const char *key
, struct lxc_conf
*c
,
4336 static inline int clr_config_no_new_privs(const char *key
, struct lxc_conf
*c
,
4339 c
->no_new_privs
= false;
4343 static inline int clr_config_prlimit(const char *key
, struct lxc_conf
*c
,
4346 return lxc_clear_limits(c
, key
);
4349 static inline int clr_config_sysctl(const char *key
, struct lxc_conf
*c
,
4352 return lxc_clear_sysctls(c
, key
);
4355 static inline int clr_config_proc(const char *key
, struct lxc_conf
*c
,
4358 return lxc_clear_procs(c
, key
);
4361 static inline int clr_config_includefiles(const char *key
, struct lxc_conf
*c
,
4364 lxc_clear_includes(c
);
4368 static int clr_config_namespace_clone(const char *key
,
4369 struct lxc_conf
*lxc_conf
, void *data
)
4371 lxc_conf
->ns_clone
= 0;
4375 static int clr_config_namespace_keep(const char *key
, struct lxc_conf
*lxc_conf
,
4378 lxc_conf
->ns_keep
= 0;
4382 static int clr_config_namespace_share(const char *key
,
4383 struct lxc_conf
*lxc_conf
, void *data
)
4386 const char *namespace;
4388 namespace = key
+ STRLITERALLEN("lxc.namespace.share.");
4389 ns_idx
= lxc_namespace_2_ns_idx(namespace);
4393 free(lxc_conf
->ns_share
[ns_idx
]);
4394 lxc_conf
->ns_share
[ns_idx
] = NULL
;
4399 static int get_config_includefiles(const char *key
, char *retv
, int inlen
,
4400 struct lxc_conf
*c
, void *data
)
4405 static struct lxc_config_t
*get_network_config_ops(const char *key
,
4406 struct lxc_conf
*lxc_conf
,
4408 char **deindexed_key
)
4411 unsigned int tmpidx
;
4413 char *copy
, *idx_start
, *idx_end
;
4414 struct lxc_config_t
*config
= NULL
;
4416 /* check that this is a sensible network key */
4417 if (strncmp("lxc.net.", key
, 8)) {
4418 ERROR("Invalid network configuration key \"%s\"", key
);
4424 ERROR("Failed to duplicate string \"%s\"", key
);
4429 if (!isdigit(*(key
+ 8))) {
4430 ERROR("Failed to detect digit in string \"%s\"", key
+ 8);
4434 /* beginning of index string */
4435 idx_start
= (copy
+ 7);
4438 /* end of index string */
4439 idx_end
= strchr((copy
+ 8), '.');
4443 /* parse current index */
4444 ret
= lxc_safe_uint((idx_start
+ 1), &tmpidx
);
4447 SYSERROR("Failed to parse unsigned integer from string \"%s\"",
4453 /* This, of course is utterly nonsensical on so many levels, but
4454 * better safe than sorry.
4455 * (Checking for INT_MAX here is intentional.)
4457 if (tmpidx
== INT_MAX
) {
4458 SYSERROR("Number of configured networks would overflow the "
4464 numstrlen
= strlen((idx_start
+ 1));
4466 /* repair configuration key */
4469 /* lxc.net.<idx>.<subkey> */
4472 if (strlen(idx_end
+ 1) == 0) {
4473 ERROR("No subkey in network configuration key \"%s\"", key
);
4477 memmove(copy
+ 8, idx_end
+ 1, strlen(idx_end
+ 1));
4478 copy
[strlen(key
) - numstrlen
+ 1] = '\0';
4480 config
= lxc_get_config(copy
);
4482 ERROR("Unknown network configuration key \"%s\"", key
);
4488 *deindexed_key
= copy
;
4497 /* Config entry is something like "lxc.net.0.ipv4" the key 'lxc.net.' was
4498 * found. So we make sure next comes an integer, find the right callback (by
4499 * rewriting the key), and call it.
4501 static int set_config_net_nic(const char *key
, const char *value
,
4502 struct lxc_conf
*lxc_conf
, void *data
)
4505 const char *idxstring
;
4506 struct lxc_config_t
*config
;
4507 struct lxc_netdev
*netdev
;
4509 char *deindexed_key
= NULL
;
4511 idxstring
= key
+ 8;
4512 if (!isdigit(*idxstring
))
4515 if (lxc_config_value_empty(value
))
4516 return clr_config_net_nic(key
, lxc_conf
, data
);
4518 config
= get_network_config_ops(key
, lxc_conf
, &idx
, &deindexed_key
);
4519 if (!config
|| idx
< 0)
4522 netdev
= lxc_get_netdev_by_idx(lxc_conf
, (unsigned int)idx
, true);
4524 free(deindexed_key
);
4528 ret
= config
->set(deindexed_key
, value
, lxc_conf
, netdev
);
4529 free(deindexed_key
);
4534 static int clr_config_net_nic(const char *key
, struct lxc_conf
*lxc_conf
,
4538 const char *idxstring
;
4539 struct lxc_config_t
*config
;
4540 struct lxc_netdev
*netdev
;
4542 char *deindexed_key
= NULL
;
4544 idxstring
= key
+ 8;
4545 if (!isdigit(*idxstring
))
4548 /* The left conjunct is pretty self-explanatory. The right conjunct
4549 * checks whether the two pointers are equal. If they are we know that
4550 * this is not a key that is namespaced any further and so we are
4551 * supposed to clear the whole network.
4553 if (isdigit(*idxstring
) && (strrchr(key
, '.') == (idxstring
- 1))) {
4554 unsigned int rmnetdevidx
;
4556 if (lxc_safe_uint(idxstring
, &rmnetdevidx
) < 0)
4559 /* Remove network from network list. */
4560 lxc_remove_nic_by_idx(lxc_conf
, rmnetdevidx
);
4564 config
= get_network_config_ops(key
, lxc_conf
, &idx
, &deindexed_key
);
4565 if (!config
|| idx
< 0)
4568 netdev
= lxc_get_netdev_by_idx(lxc_conf
, (unsigned int)idx
, false);
4570 free(deindexed_key
);
4574 ret
= config
->clr(deindexed_key
, lxc_conf
, netdev
);
4575 free(deindexed_key
);
4580 static int clr_config_net_type(const char *key
, struct lxc_conf
*lxc_conf
,
4583 struct lxc_netdev
*netdev
= data
;
4593 static int clr_config_net_name(const char *key
, struct lxc_conf
*lxc_conf
,
4596 struct lxc_netdev
*netdev
= data
;
4601 netdev
->name
[0] = '\0';
4606 static int clr_config_net_flags(const char *key
, struct lxc_conf
*lxc_conf
,
4609 struct lxc_netdev
*netdev
= data
;
4619 static int clr_config_net_link(const char *key
, struct lxc_conf
*lxc_conf
,
4622 struct lxc_netdev
*netdev
= data
;
4627 netdev
->link
[0] = '\0';
4632 static int clr_config_net_macvlan_mode(const char *key
,
4633 struct lxc_conf
*lxc_conf
, void *data
)
4635 struct lxc_netdev
*netdev
= data
;
4640 if (netdev
->type
!= LXC_NET_MACVLAN
)
4643 netdev
->priv
.macvlan_attr
.mode
= -1;
4648 static int clr_config_net_veth_pair(const char *key
, struct lxc_conf
*lxc_conf
,
4651 struct lxc_netdev
*netdev
= data
;
4656 netdev
->priv
.veth_attr
.pair
[0] = '\0';
4661 static int clr_config_net_script_up(const char *key
, struct lxc_conf
*lxc_conf
,
4664 struct lxc_netdev
*netdev
= data
;
4669 free(netdev
->upscript
);
4670 netdev
->upscript
= NULL
;
4675 static int clr_config_net_script_down(const char *key
,
4676 struct lxc_conf
*lxc_conf
, void *data
)
4678 struct lxc_netdev
*netdev
= data
;
4683 free(netdev
->downscript
);
4684 netdev
->downscript
= NULL
;
4689 static int clr_config_net_hwaddr(const char *key
, struct lxc_conf
*lxc_conf
,
4692 struct lxc_netdev
*netdev
= data
;
4697 free(netdev
->hwaddr
);
4698 netdev
->hwaddr
= NULL
;
4703 static int clr_config_net_mtu(const char *key
, struct lxc_conf
*lxc_conf
,
4706 struct lxc_netdev
*netdev
= data
;
4717 static int clr_config_net_vlan_id(const char *key
, struct lxc_conf
*lxc_conf
,
4720 struct lxc_netdev
*netdev
= data
;
4725 netdev
->priv
.vlan_attr
.vid
= 0;
4730 static int clr_config_net_ipv4_gateway(const char *key
,
4731 struct lxc_conf
*lxc_conf
, void *data
)
4733 struct lxc_netdev
*netdev
= data
;
4738 free(netdev
->ipv4_gateway
);
4739 netdev
->ipv4_gateway
= NULL
;
4744 static int clr_config_net_ipv4_address(const char *key
,
4745 struct lxc_conf
*lxc_conf
, void *data
)
4747 struct lxc_netdev
*netdev
= data
;
4748 struct lxc_list
*cur
, *next
;
4753 lxc_list_for_each_safe(cur
, &netdev
->ipv4
, next
) {
4762 static int clr_config_net_ipv6_gateway(const char *key
,
4763 struct lxc_conf
*lxc_conf
, void *data
)
4765 struct lxc_netdev
*netdev
= data
;
4770 free(netdev
->ipv6_gateway
);
4771 netdev
->ipv6_gateway
= NULL
;
4776 static int clr_config_net_ipv6_address(const char *key
,
4777 struct lxc_conf
*lxc_conf
, void *data
)
4779 struct lxc_netdev
*netdev
= data
;
4780 struct lxc_list
*cur
, *next
;
4785 lxc_list_for_each_safe(cur
, &netdev
->ipv6
, next
) {
4794 static int get_config_net_nic(const char *key
, char *retv
, int inlen
,
4795 struct lxc_conf
*c
, void *data
)
4798 const char *idxstring
;
4799 struct lxc_config_t
*config
;
4800 struct lxc_netdev
*netdev
;
4802 char *deindexed_key
= NULL
;
4804 idxstring
= key
+ 8;
4805 if (!isdigit(*idxstring
))
4808 config
= get_network_config_ops(key
, c
, &idx
, &deindexed_key
);
4809 if (!config
|| idx
< 0)
4812 netdev
= lxc_get_netdev_by_idx(c
, (unsigned int)idx
, false);
4814 free(deindexed_key
);
4818 ret
= config
->get(deindexed_key
, retv
, inlen
, c
, netdev
);
4819 free(deindexed_key
);
4824 static int get_config_net_type(const char *key
, char *retv
, int inlen
,
4825 struct lxc_conf
*c
, void *data
)
4829 struct lxc_netdev
*netdev
= data
;
4834 memset(retv
, 0, inlen
);
4839 strprint(retv
, inlen
, "%s", lxc_net_type_to_str(netdev
->type
));
4844 static int get_config_net_flags(const char *key
, char *retv
, int inlen
,
4845 struct lxc_conf
*c
, void *data
)
4849 struct lxc_netdev
*netdev
= data
;
4854 memset(retv
, 0, inlen
);
4859 if (netdev
->flags
& IFF_UP
)
4860 strprint(retv
, inlen
, "up");
4865 static int get_config_net_link(const char *key
, char *retv
, int inlen
,
4866 struct lxc_conf
*c
, void *data
)
4870 struct lxc_netdev
*netdev
= data
;
4875 memset(retv
, 0, inlen
);
4880 if (netdev
->link
[0] != '\0')
4881 strprint(retv
, inlen
, "%s", netdev
->link
);
4886 static int get_config_net_name(const char *key
, char *retv
, int inlen
,
4887 struct lxc_conf
*c
, void *data
)
4891 struct lxc_netdev
*netdev
= data
;
4896 memset(retv
, 0, inlen
);
4901 if (netdev
->name
[0] != '\0')
4902 strprint(retv
, inlen
, "%s", netdev
->name
);
4907 static int get_config_net_macvlan_mode(const char *key
, char *retv
, int inlen
,
4908 struct lxc_conf
*c
, void *data
)
4913 struct lxc_netdev
*netdev
= data
;
4918 memset(retv
, 0, inlen
);
4923 if (netdev
->type
!= LXC_NET_MACVLAN
)
4926 switch (netdev
->priv
.macvlan_attr
.mode
) {
4927 case MACVLAN_MODE_PRIVATE
:
4930 case MACVLAN_MODE_VEPA
:
4933 case MACVLAN_MODE_BRIDGE
:
4936 case MACVLAN_MODE_PASSTHRU
:
4944 strprint(retv
, inlen
, "%s", mode
);
4949 static int get_config_net_veth_pair(const char *key
, char *retv
, int inlen
,
4950 struct lxc_conf
*c
, void *data
)
4954 struct lxc_netdev
*netdev
= data
;
4959 memset(retv
, 0, inlen
);
4964 if (netdev
->type
!= LXC_NET_VETH
)
4967 strprint(retv
, inlen
, "%s",
4968 netdev
->priv
.veth_attr
.pair
[0] != '\0'
4969 ? netdev
->priv
.veth_attr
.pair
4970 : netdev
->priv
.veth_attr
.veth1
);
4975 static int get_config_net_script_up(const char *key
, char *retv
, int inlen
,
4976 struct lxc_conf
*c
, void *data
)
4980 struct lxc_netdev
*netdev
= data
;
4985 memset(retv
, 0, inlen
);
4990 if (netdev
->upscript
)
4991 strprint(retv
, inlen
, "%s", netdev
->upscript
);
4996 static int get_config_net_script_down(const char *key
, char *retv
, int inlen
,
4997 struct lxc_conf
*c
, void *data
)
5001 struct lxc_netdev
*netdev
= data
;
5006 memset(retv
, 0, inlen
);
5011 if (netdev
->downscript
)
5012 strprint(retv
, inlen
, "%s", netdev
->downscript
);
5017 static int get_config_net_hwaddr(const char *key
, char *retv
, int inlen
,
5018 struct lxc_conf
*c
, void *data
)
5022 struct lxc_netdev
*netdev
= data
;
5027 memset(retv
, 0, inlen
);
5033 strprint(retv
, inlen
, "%s", netdev
->hwaddr
);
5038 static int get_config_net_mtu(const char *key
, char *retv
, int inlen
,
5039 struct lxc_conf
*c
, void *data
)
5043 struct lxc_netdev
*netdev
= data
;
5048 memset(retv
, 0, inlen
);
5054 strprint(retv
, inlen
, "%s", netdev
->mtu
);
5059 static int get_config_net_vlan_id(const char *key
, char *retv
, int inlen
,
5060 struct lxc_conf
*c
, void *data
)
5064 struct lxc_netdev
*netdev
= data
;
5069 memset(retv
, 0, inlen
);
5074 if (netdev
->type
!= LXC_NET_VLAN
)
5077 strprint(retv
, inlen
, "%d", netdev
->priv
.vlan_attr
.vid
);
5082 static int get_config_net_ipv4_gateway(const char *key
, char *retv
, int inlen
,
5083 struct lxc_conf
*c
, void *data
)
5086 char buf
[INET_ADDRSTRLEN
];
5088 struct lxc_netdev
*netdev
= data
;
5093 memset(retv
, 0, inlen
);
5098 if (netdev
->ipv4_gateway_auto
) {
5099 strprint(retv
, inlen
, "auto");
5100 } else if (netdev
->ipv4_gateway
) {
5101 inet_ntop(AF_INET
, netdev
->ipv4_gateway
, buf
, sizeof(buf
));
5102 strprint(retv
, inlen
, "%s", buf
);
5108 static int get_config_net_ipv4_address(const char *key
, char *retv
, int inlen
,
5109 struct lxc_conf
*c
, void *data
)
5113 char buf
[INET_ADDRSTRLEN
];
5114 struct lxc_list
*it
;
5116 struct lxc_netdev
*netdev
= data
;
5121 memset(retv
, 0, inlen
);
5126 listlen
= lxc_list_len(&netdev
->ipv4
);
5128 lxc_list_for_each(it
, &netdev
->ipv4
) {
5129 struct lxc_inetdev
*i
= it
->elem
;
5130 inet_ntop(AF_INET
, &i
->addr
, buf
, sizeof(buf
));
5131 strprint(retv
, inlen
, "%s/%u%s", buf
, i
->prefix
,
5132 (listlen
-- > 1) ? "\n" : "");
5138 static int get_config_net_ipv6_gateway(const char *key
, char *retv
, int inlen
,
5139 struct lxc_conf
*c
, void *data
)
5142 char buf
[INET6_ADDRSTRLEN
];
5144 struct lxc_netdev
*netdev
= data
;
5149 memset(retv
, 0, inlen
);
5154 if (netdev
->ipv6_gateway_auto
) {
5155 strprint(retv
, inlen
, "auto");
5156 } else if (netdev
->ipv6_gateway
) {
5157 inet_ntop(AF_INET6
, netdev
->ipv6_gateway
, buf
, sizeof(buf
));
5158 strprint(retv
, inlen
, "%s", buf
);
5164 static int get_config_net_ipv6_address(const char *key
, char *retv
, int inlen
,
5165 struct lxc_conf
*c
, void *data
)
5169 char buf
[INET6_ADDRSTRLEN
];
5170 struct lxc_list
*it
;
5172 struct lxc_netdev
*netdev
= data
;
5177 memset(retv
, 0, inlen
);
5182 listlen
= lxc_list_len(&netdev
->ipv6
);
5184 lxc_list_for_each(it
, &netdev
->ipv6
) {
5185 struct lxc_inet6dev
*i
= it
->elem
;
5186 inet_ntop(AF_INET6
, &i
->addr
, buf
, sizeof(buf
));
5187 strprint(retv
, inlen
, "%s/%u%s", buf
, i
->prefix
,
5188 (listlen
-- > 1) ? "\n" : "");
5194 int lxc_list_config_items(char *retv
, int inlen
)
5203 memset(retv
, 0, inlen
);
5205 for (i
= 0; i
< config_jump_table_size
; i
++) {
5206 char *s
= config_jump_table
[i
].name
;
5208 if (s
[strlen(s
) - 1] == '.')
5211 strprint(retv
, inlen
, "%s\n", s
);
5217 int lxc_list_subkeys(struct lxc_conf
*conf
, const char *key
, char *retv
,
5226 memset(retv
, 0, inlen
);
5228 if (!strcmp(key
, "lxc.apparmor")) {
5229 strprint(retv
, inlen
, "allow_incomplete\n");
5230 strprint(retv
, inlen
, "allow_nesting\n");
5231 strprint(retv
, inlen
, "profile\n");
5232 strprint(retv
, inlen
, "raw\n");
5233 } else if (!strcmp(key
, "lxc.cgroup")) {
5234 strprint(retv
, inlen
, "dir\n");
5235 } else if (!strcmp(key
, "lxc.selinux")) {
5236 strprint(retv
, inlen
, "context\n");
5237 } else if (!strcmp(key
, "lxc.mount")) {
5238 strprint(retv
, inlen
, "auto\n");
5239 strprint(retv
, inlen
, "entry\n");
5240 strprint(retv
, inlen
, "fstab\n");
5241 } else if (!strcmp(key
, "lxc.rootfs")) {
5242 strprint(retv
, inlen
, "mount\n");
5243 strprint(retv
, inlen
, "options\n");
5244 strprint(retv
, inlen
, "path\n");
5245 } else if (!strcmp(key
, "lxc.uts")) {
5246 strprint(retv
, inlen
, "name\n");
5247 } else if (!strcmp(key
, "lxc.hook")) {
5248 strprint(retv
, inlen
, "autodev\n");
5249 strprint(retv
, inlen
, "clone\n");
5250 strprint(retv
, inlen
, "destroy\n");
5251 strprint(retv
, inlen
, "mount\n");
5252 strprint(retv
, inlen
, "post-stop\n");
5253 strprint(retv
, inlen
, "pre-mount\n");
5254 strprint(retv
, inlen
, "pre-start\n");
5255 strprint(retv
, inlen
, "start-host\n");
5256 strprint(retv
, inlen
, "start\n");
5257 strprint(retv
, inlen
, "stop\n");
5258 } else if (!strcmp(key
, "lxc.cap")) {
5259 strprint(retv
, inlen
, "drop\n");
5260 strprint(retv
, inlen
, "keep\n");
5261 } else if (!strcmp(key
, "lxc.console")) {
5262 strprint(retv
, inlen
, "logfile\n");
5263 strprint(retv
, inlen
, "path\n");
5264 } else if (!strcmp(key
, "lxc.seccomp")) {
5265 strprint(retv
, inlen
, "profile\n");
5266 } else if (!strcmp(key
, "lxc.signal")) {
5267 strprint(retv
, inlen
, "halt\n");
5268 strprint(retv
, inlen
, "reboot\n");
5269 strprint(retv
, inlen
, "stop\n");
5270 } else if (!strcmp(key
, "lxc.start")) {
5271 strprint(retv
, inlen
, "auto\n");
5272 strprint(retv
, inlen
, "delay\n");
5273 strprint(retv
, inlen
, "order\n");
5274 } else if (!strcmp(key
, "lxc.monitor")) {
5275 strprint(retv
, inlen
, "unshare\n");
5283 int lxc_list_net(struct lxc_conf
*c
, const char *key
, char *retv
, int inlen
)
5286 const char *idxstring
;
5287 struct lxc_netdev
*netdev
;
5291 idxstring
= key
+ 8;
5292 if (!isdigit(*idxstring
))
5295 (void)get_network_config_ops(key
, c
, &idx
, NULL
);
5299 netdev
= lxc_get_netdev_by_idx(c
, (unsigned int)idx
, false);
5306 memset(retv
, 0, inlen
);
5308 strprint(retv
, inlen
, "type\n");
5309 strprint(retv
, inlen
, "script.up\n");
5310 strprint(retv
, inlen
, "script.down\n");
5312 if (netdev
->type
!= LXC_NET_EMPTY
) {
5313 strprint(retv
, inlen
, "flags\n");
5314 strprint(retv
, inlen
, "link\n");
5315 strprint(retv
, inlen
, "name\n");
5316 strprint(retv
, inlen
, "hwaddr\n");
5317 strprint(retv
, inlen
, "mtu\n");
5318 strprint(retv
, inlen
, "ipv6.address\n");
5319 strprint(retv
, inlen
, "ipv6.gateway\n");
5320 strprint(retv
, inlen
, "ipv4.address\n");
5321 strprint(retv
, inlen
, "ipv4.gateway\n");
5324 switch (netdev
->type
) {
5326 strprint(retv
, inlen
, "veth.pair\n");
5328 case LXC_NET_MACVLAN
:
5329 strprint(retv
, inlen
, "macvlan.mode\n");
5332 strprint(retv
, inlen
, "vlan.id\n");