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c2cc9f0a 1/*
2 * lxc: linux Container library
c2cc9f0a 3 * (C) Copyright IBM Corp. 2007, 2008
4 *
5 * Authors:
9afe19d6 6 * Daniel Lezcano <daniel.lezcano at free.fr>
70c1e708
CB		 7 * Serge Hallyn <serge@hallyn.com>
8 * Christian Brauner <christian.brauner@ubuntu.com>
c2cc9f0a 9 *
10 * This library is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU Lesser General Public
12 * License as published by the Free Software Foundation; either
13 * version 2.1 of the License, or (at your option) any later version.
14 *
15 * This library is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * Lesser General Public License for more details.
19 *
20 * You should have received a copy of the GNU Lesser General Public
21 * License along with this library; if not, write to the Free Software
250b1eec 22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
c2cc9f0a 23 */
70c1e708 24
d38dd64a
CB		 25#ifndef _GNU_SOURCE
26#define _GNU_SOURCE 1
27#endif
70c1e708 28#define __STDC_FORMAT_MACROS
d38dd64a 29#include <arpa/inet.h>
70c1e708
CB		 30#include <ctype.h>
31#include <dirent.h>
32#include <errno.h>
33#include <fcntl.h>
34#include <inttypes.h>
d38dd64a
CB		 35#include <net/if.h>
36#include <netinet/in.h>
70c1e708 37#include <signal.h>
c2cc9f0a 38#include <stdio.h>
39#include <stdlib.h>
40#include <string.h>
70c1e708 41#include <sys/param.h>
63376d7d 42#include <sys/stat.h>
c2cc9f0a 43#include <sys/types.h>
c2cc9f0a 44#include <sys/utsname.h>
d38dd64a
CB		 45#include <syslog.h>
46#include <time.h>
47#include <unistd.h>
c2cc9f0a 48
70c1e708 49#include "conf.h"
6ff05e18 50#include "config.h"
525f0002 51#include "confile.h"
0b843d35 52#include "confile_utils.h"
d38dd64a 53#include "../include/netns_ifaddrs.h"
f2363e38 54#include "log.h"
58e0f57d 55#include "lxcseccomp.h"
70c1e708
CB		 56#include "network.h"
57#include "parse.h"
28d832c4 58#include "storage.h"
70c1e708 59#include "utils.h"
36eb9bde 60
6ff05e18
SG		 61#if HAVE_SYS_PERSONALITY_H
62#include <sys/personality.h>
63#endif
64
43f984ea
DJ		 65#ifndef HAVE_STRLCPY
66#include "include/strlcpy.h"
67#endif
68
ebcd5140
DJ		 69#ifndef HAVE_STRLCAT
70#include "include/strlcat.h"
71#endif
72
ac2cecc4 73lxc_log_define(confile, lxc);
576f946d 74
afeec9b7
CB		 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 *, \
81 void *);
71e287ca 82
63bab717 83lxc_config_define(autodev);
71e287ca 84lxc_config_define(apparmor_allow_incomplete);
1800f924 85lxc_config_define(apparmor_allow_nesting);
63bab717 86lxc_config_define(apparmor_profile);
1800f924 87lxc_config_define(apparmor_raw);
63bab717
CB		 88lxc_config_define(cap_drop);
89lxc_config_define(cap_keep);
43654d34 90lxc_config_define(cgroup_controller);
54860ed0 91lxc_config_define(cgroup2_controller);
43654d34 92lxc_config_define(cgroup_dir);
9caee129 93lxc_config_define(cgroup_relative);
28f3b1cd 94lxc_config_define(console_buffer_size);
861813e5 95lxc_config_define(console_logfile);
63bab717 96lxc_config_define(console_path);
861813e5
CB		 97lxc_config_define(console_rotate);
98lxc_config_define(console_size);
63bab717
CB		 99lxc_config_define(environment);
100lxc_config_define(ephemeral);
101lxc_config_define(execute_cmd);
102lxc_config_define(group);
103lxc_config_define(hooks);
44ae0fb6 104lxc_config_define(hooks_version);
71e287ca 105lxc_config_define(idmaps);
63bab717
CB		 106lxc_config_define(includefiles);
107lxc_config_define(init_cmd);
3c491553 108lxc_config_define(init_cwd);
63bab717
CB		 109lxc_config_define(init_gid);
110lxc_config_define(init_uid);
46cc906d 111lxc_config_define(log_file);
63bab717
CB		 112lxc_config_define(log_level);
113lxc_config_define(log_syslog);
114lxc_config_define(monitor);
258f8051 115lxc_config_define(monitor_signal_pdeath);
71e287ca 116lxc_config_define(mount);
117lxc_config_define(mount_auto);
47148e96 118lxc_config_define(mount_fstab);
1d8d3676 119lxc_config_define(namespace_clone);
abeb5bba 120lxc_config_define(namespace_keep);
b074bbf1 121lxc_config_define(namespace_share);
63bab717 122lxc_config_define(net);
71e287ca 123lxc_config_define(net_flags);
71e287ca 124lxc_config_define(net_hwaddr);
9ff60df2 125lxc_config_define(net_ipv4_address);
71e287ca 126lxc_config_define(net_ipv4_gateway);
2e44ae28 127lxc_config_define(net_ipv6_address);
71e287ca 128lxc_config_define(net_ipv6_gateway);
63bab717
CB		 129lxc_config_define(net_link);
130lxc_config_define(net_macvlan_mode);
131lxc_config_define(net_mtu);
132lxc_config_define(net_name);
71e287ca 133lxc_config_define(net_nic);
63bab717
CB		 134lxc_config_define(net_script_down);
135lxc_config_define(net_script_up);
136lxc_config_define(net_type);
137lxc_config_define(net_veth_pair);
138lxc_config_define(net_vlan_id);
139lxc_config_define(no_new_privs);
63bab717
CB		 140lxc_config_define(personality);
141lxc_config_define(prlimit);
142lxc_config_define(pty_max);
6e54330c 143lxc_config_define(rootfs_managed);
63bab717
CB		 144lxc_config_define(rootfs_mount);
145lxc_config_define(rootfs_options);
146lxc_config_define(rootfs_path);
0b427da0 147lxc_config_define(seccomp_profile);
63bab717 148lxc_config_define(selinux_context);
55c84efc 149lxc_config_define(signal_halt);
150lxc_config_define(signal_reboot);
151lxc_config_define(signal_stop);
71e287ca 152lxc_config_define(start);
63bab717
CB		 153lxc_config_define(tty_max);
154lxc_config_define(tty_dir);
155lxc_config_define(uts_name);
7edd0540 156lxc_config_define(sysctl);
61d7a733 157lxc_config_define(proc);
c2cc9f0a 158
72d0e1cb 159static struct lxc_config_t config[] = {
6fba98b5
CB		 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, },
1800f924
WB		 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, },
6fba98b5
CB		 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, },
9caee129 170 { "lxc.cgroup.relative", set_config_cgroup_relative, get_config_cgroup_relative, clr_config_cgroup_relative, },
6fba98b5 171 { "lxc.cgroup", set_config_cgroup_controller, get_config_cgroup_controller, clr_config_cgroup_controller, },
6fba98b5
CB		 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, },
861813e5 176 { "lxc.console.size", set_config_console_size, get_config_console_size, clr_config_console_size, },
6fba98b5
CB		 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, },
258f8051 203 { "lxc.monitor.signal.pdeath", set_config_monitor_signal_pdeath, get_config_monitor_signal_pdeath, clr_config_monitor_signal_pdeath, },
6fba98b5
CB		 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, },
6e54330c 230 { "lxc.rootfs.managed", set_config_rootfs_managed, get_config_rootfs_managed, clr_config_rootfs_managed, },
6fba98b5
CB		 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, },
a84b9932
AV		 247};
248
504a2217 249static const size_t config_size = sizeof(config) / sizeof(struct lxc_config_t);
c2cc9f0a 250
300df83e 251struct lxc_config_t *lxc_get_config(const char *key)
c2cc9f0a 252{
84760c11 253 size_t i;
c2cc9f0a 254
255 for (i = 0; i < config_size; i++)
504a2217 256 if (!strncmp(config[i].name, key, strlen(config[i].name)))
c2cc9f0a 257 return &config[i];
300df83e 258
c2cc9f0a 259 return NULL;
260}
261
f9373e40
CB		 262static int set_config_net(const char *key, const char *value,
263 struct lxc_conf *lxc_conf, void *data)
6b0d5538 264{
663e9916 265 if (!lxc_config_value_empty(value)) {
f9373e40 266 ERROR("lxc.net must not have a value");
6b0d5538
SH		 267 return -1;
268 }
269
f9373e40 270 return clr_config_net(key, lxc_conf, data);
6b0d5538
SH		 271}
272
f9373e40
CB		 273static int set_config_net_type(const char *key, const char *value,
274 struct lxc_conf *lxc_conf, void *data)
c2cc9f0a 275{
070a05af 276 struct lxc_netdev *netdev = data;
c2cc9f0a 277
663e9916 278 if (lxc_config_value_empty(value))
f9373e40 279 return clr_config_net_type(key, lxc_conf, data);
c302b476 280
bbc079cf 281 if (!netdev)
c2cc9f0a 282 return -1;
c2cc9f0a 283
bbc079cf 284 if (!strcmp(value, "veth")) {
24654103 285 netdev->type = LXC_NET_VETH;
bbc079cf 286 } else if (!strcmp(value, "macvlan")) {
24654103 287 netdev->type = LXC_NET_MACVLAN;
9b0df30f
CB		 288 lxc_macvlan_mode_to_flag(&netdev->priv.macvlan_attr.mode,
289 "private");
bbc079cf 290 } else if (!strcmp(value, "vlan")) {
24654103 291 netdev->type = LXC_NET_VLAN;
bbc079cf 292 } else if (!strcmp(value, "phys")) {
24654103 293 netdev->type = LXC_NET_PHYS;
bbc079cf 294 } else if (!strcmp(value, "empty")) {
24654103 295 netdev->type = LXC_NET_EMPTY;
bbc079cf 296 } else if (!strcmp(value, "none")) {
26b797f3 297 netdev->type = LXC_NET_NONE;
bbc079cf 298 } else {
36eb9bde 299 ERROR("invalid network type %s", value);
c2cc9f0a 300 return -1;
301 }
bbc079cf 302
c2cc9f0a 303 return 0;
304}
305
f9373e40
CB		 306static int set_config_net_flags(const char *key, const char *value,
307 struct lxc_conf *lxc_conf, void *data)
c2cc9f0a 308{
070a05af 309 struct lxc_netdev *netdev = data;
c2cc9f0a 310
9d4bf22d 311 if (lxc_config_value_empty(value))
f9373e40 312 return clr_config_net_flags(key, lxc_conf, data);
9d4bf22d 313
33c945e0 314 if (!netdev)
c2cc9f0a 315 return -1;
c2cc9f0a 316
33c945e0 317 netdev->flags |= IFF_UP;
c2cc9f0a 318
33c945e0
MT		 319 return 0;
320}
321
b45e32f9 322static int create_matched_ifnames(const char *value, struct lxc_conf *lxc_conf,
d5aba460 323 struct lxc_netdev *netdev)
576400e5 324{
b1e44ed1 325 struct netns_ifaddrs *ifaddr, *ifa;
504a2217
CB		 326 int n;
327 int ret = 0;
f9373e40
CB		 328 const char *type_key = "lxc.net.type";
329 const char *link_key = "lxc.net.link";
576400e5 330 const char *tmpvalue = "phys";
576400e5 331
b1e44ed1 332 if (netns_getifaddrs(&ifaddr, -1, &(bool){false}) < 0) {
576400e5 333 SYSERROR("Get network interfaces failed");
334 return -1;
335 }
336
337 for (ifa = ifaddr, n = 0; ifa != NULL; ifa = ifa->ifa_next, n++) {
338 if (!ifa->ifa_addr)
339 continue;
340 if (ifa->ifa_addr->sa_family != AF_PACKET)
341 continue;
342
504a2217 343 if (!strncmp(value, ifa->ifa_name, strlen(value) - 1)) {
f9373e40
CB		 344 ret = set_config_net_type(type_key, tmpvalue, lxc_conf,
345 netdev);
576400e5 346 if (!ret) {
f9373e40 347 ret = set_config_net_link(
c302b476 348 link_key, ifa->ifa_name, lxc_conf, netdev);
576400e5 349 if (ret) {
350 ERROR("failed to create matched ifnames");
351 break;
352 }
353 } else {
354 ERROR("failed to create matched ifnames");
355 break;
356 }
357 }
358 }
359
b1e44ed1 360 netns_freeifaddrs(ifaddr);
504a2217 361 ifaddr = NULL;
091045f8 362
576400e5 363 return ret;
364}
365
f9373e40
CB		 366static int set_config_net_link(const char *key, const char *value,
367 struct lxc_conf *lxc_conf, void *data)
33c945e0 368{
070a05af 369 struct lxc_netdev *netdev = data;
576400e5 370 int ret = 0;
33c945e0 371
6bed0fb6 372 if (lxc_config_value_empty(value))
f9373e40 373 return clr_config_net_link(key, lxc_conf, data);
6bed0fb6 374
33c945e0 375 if (!netdev)
c2cc9f0a 376 return -1;
c2cc9f0a 377
b45e32f9
CB		 378 if (value[strlen(value) - 1] == '+' && netdev->type == LXC_NET_PHYS)
379 ret = create_matched_ifnames(value, lxc_conf, netdev);
380 else
18cd4b54 381 ret = network_ifname(netdev->link, value, sizeof(netdev->link));
576400e5 382
383 return ret;
c2cc9f0a 384}
385
f9373e40
CB		 386static int set_config_net_name(const char *key, const char *value,
387 struct lxc_conf *lxc_conf, void *data)
c2cc9f0a 388{
070a05af 389 struct lxc_netdev *netdev = data;
c2cc9f0a 390
6bed0fb6 391 if (lxc_config_value_empty(value))
f9373e40 392 return clr_config_net_name(key, lxc_conf, data);
6bed0fb6 393
33c945e0 394 if (!netdev)
c2cc9f0a 395 return -1;
c2cc9f0a 396
18cd4b54 397 return network_ifname(netdev->name, value, sizeof(netdev->name));
33c945e0
MT		 398}
399
f9373e40
CB		 400static int set_config_net_veth_pair(const char *key, const char *value,
401 struct lxc_conf *lxc_conf, void *data)
e892973e 402{
070a05af 403 struct lxc_netdev *netdev = data;
e892973e 404
6bed0fb6 405 if (lxc_config_value_empty(value))
f9373e40 406 return clr_config_net_veth_pair(key, lxc_conf, data);
6bed0fb6 407
e892973e
DL		 408 if (!netdev)
409 return -1;
410
18cd4b54 411 return network_ifname(netdev->priv.veth_attr.pair, value, sizeof(netdev->priv.veth_attr.pair));
e892973e
DL		 412}
413
f9373e40
CB		 414static int set_config_net_macvlan_mode(const char *key, const char *value,
415 struct lxc_conf *lxc_conf, void *data)
8634bc19 416{
070a05af 417 struct lxc_netdev *netdev = data;
8634bc19 418
6bed0fb6 419 if (lxc_config_value_empty(value))
f9373e40 420 return clr_config_net_macvlan_mode(key, lxc_conf, data);
6bed0fb6 421
8634bc19
MT		 422 if (!netdev)
423 return -1;
424
9b0df30f 425 return lxc_macvlan_mode_to_flag(&netdev->priv.macvlan_attr.mode, value);
8634bc19
MT		 426}
427
f9373e40
CB		 428static int set_config_net_hwaddr(const char *key, const char *value,
429 struct lxc_conf *lxc_conf, void *data)
33c945e0 430{
070a05af 431 struct lxc_netdev *netdev = data;
504a2217 432 char *new_value;
33c945e0 433
6bed0fb6 434 if (lxc_config_value_empty(value))
f9373e40 435 return clr_config_net_hwaddr(key, lxc_conf, data);
6bed0fb6 436
ecbb3790
CB		 437 if (!netdev)
438 return -1;
439
504a2217 440 new_value = strdup(value);
d5aba460 441 if (!new_value)
c2cc9f0a 442 return -1;
d5aba460 443
508c263e 444 rand_complete_hwaddr(new_value);
c2cc9f0a 445
663e9916 446 if (lxc_config_value_empty(new_value)) {
508c263e
SH		 447 free(new_value);
448 netdev->hwaddr = NULL;
449 return 0;
450 }
451
452 netdev->hwaddr = new_value;
453 return 0;
c2cc9f0a 454}
455
f9373e40
CB		 456static int set_config_net_vlan_id(const char *key, const char *value,
457 struct lxc_conf *lxc_conf, void *data)
26c39028 458{
d5aba460 459 int ret;
070a05af 460 struct lxc_netdev *netdev = data;
26c39028 461
6bed0fb6 462 if (lxc_config_value_empty(value))
f9373e40 463 return clr_config_net_vlan_id(key, lxc_conf, data);
6bed0fb6 464
26c39028
JHS		 465 if (!netdev)
466 return -1;
467
d5aba460
CB		 468 ret = get_u16(&netdev->priv.vlan_attr.vid, value, 0);
469 if (ret < 0)
26c39028
JHS		 470 return -1;
471
472 return 0;
473}
474
f9373e40
CB		 475static int set_config_net_mtu(const char *key, const char *value,
476 struct lxc_conf *lxc_conf, void *data)
442cbbe6 477{
070a05af 478 struct lxc_netdev *netdev = data;
442cbbe6 479
6bed0fb6 480 if (lxc_config_value_empty(value))
f9373e40 481 return clr_config_net_mtu(key, lxc_conf, data);
6bed0fb6 482
33c945e0 483 if (!netdev)
442cbbe6 484 return -1;
442cbbe6 485
713046e3 486 return set_config_string_item(&netdev->mtu, value);
442cbbe6
TR		 487}
488
9ff60df2
CB		 489static int set_config_net_ipv4_address(const char *key, const char *value,
490 struct lxc_conf *lxc_conf, void *data)
c2cc9f0a 491{
d5aba460 492 int ret;
070a05af 493 struct lxc_netdev *netdev = data;
33c945e0 494 struct lxc_inetdev *inetdev;
c2cc9f0a 495 struct lxc_list *list;
504a2217
CB		 496 char *cursor, *slash;
497 char *addr = NULL, *bcast = NULL, *prefix = NULL;
c2cc9f0a 498
663e9916 499 if (lxc_config_value_empty(value))
9ff60df2 500 return clr_config_net_ipv4_address(key, lxc_conf, data);
0797e123 501
33c945e0 502 if (!netdev)
c2cc9f0a 503 return -1;
c2cc9f0a 504
505 inetdev = malloc(sizeof(*inetdev));
d5aba460 506 if (!inetdev)
c2cc9f0a 507 return -1;
d5aba460 508
c2cc9f0a 509 memset(inetdev, 0, sizeof(*inetdev));
510
511 list = malloc(sizeof(*list));
512 if (!list) {
53719062 513 free(inetdev);
c2cc9f0a 514 return -1;
515 }
516
517 lxc_list_init(list);
518 list->elem = inetdev;
519
956edc54
SG		 520 addr = strdup(value);
521 if (!addr) {
53719062
SH		 522 free(inetdev);
523 free(list);
956edc54
SG		 524 return -1;
525 }
c2cc9f0a 526
527 cursor = strstr(addr, " ");
528 if (cursor) {
529 *cursor = '\0';
530 bcast = cursor + 1;
531 }
532
533 slash = strstr(addr, "/");
534 if (slash) {
535 *slash = '\0';
536 prefix = slash + 1;
537 }
538
d5aba460
CB		 539 ret = inet_pton(AF_INET, addr, &inetdev->addr);
540 if (!ret || ret < 0) {
541 SYSERROR("Invalid ipv4 address \"%s\"", value);
53719062 542 free(inetdev);
956edc54 543 free(addr);
53719062 544 free(list);
c2cc9f0a 545 return -1;
546 }
547
d5aba460
CB		 548 if (bcast) {
549 ret = inet_pton(AF_INET, bcast, &inetdev->bcast);
550 if (!ret || ret < 0) {
551 SYSERROR("Invalid ipv4 broadcast address \"%s\"", value);
552 free(inetdev);
553 free(list);
554 free(addr);
555 return -1;
556 }
557
0093bb8c 558 }
c2cc9f0a 559
504a2217 560 /* No prefix specified, determine it from the network class. */
1c633398 561 if (prefix) {
d5aba460 562 ret = lxc_safe_uint(prefix, &inetdev->prefix);
aa7c5841
DJ		 563 if (ret < 0) {
564 free(inetdev);
565 free(list);
566 free(addr);
1c633398 567 return -1;
aa7c5841 568 }
1c633398
CB		 569 } else {
570 inetdev->prefix = config_ip_prefix(&inetdev->addr);
571 }
a059591e 572
504a2217
CB		 573 /* If no broadcast address, let compute one from the
574 * prefix and address.
0093bb8c
DL		 575 */
576 if (!bcast) {
1b7d4743 577 inetdev->bcast.s_addr = inetdev->addr.s_addr;
d5aba460 578 inetdev->bcast.s_addr |= htonl(INADDR_BROADCAST >> inetdev->prefix);
0093bb8c 579 }
c2cc9f0a 580
8538f388 581 lxc_list_add_tail(&netdev->ipv4, list);
c2cc9f0a 582
956edc54 583 free(addr);
c2cc9f0a 584 return 0;
585}
586
f9373e40
CB		 587static int set_config_net_ipv4_gateway(const char *key, const char *value,
588 struct lxc_conf *lxc_conf, void *data)
f8fee0e2 589{
070a05af 590 struct lxc_netdev *netdev = data;
f8fee0e2 591
6bed0fb6 592 if (lxc_config_value_empty(value))
f9373e40 593 return clr_config_net_ipv4_gateway(key, lxc_conf, data);
6bed0fb6 594
f8fee0e2
MK		 595 if (!netdev)
596 return -1;
597
e088e926 598 free(netdev->ipv4_gateway);
f8fee0e2 599
ab6faf2e 600 if (!strcmp(value, "auto")) {
19a26f82
MK		 601 netdev->ipv4_gateway = NULL;
602 netdev->ipv4_gateway_auto = true;
603 } else {
25a908b8 604 int ret;
e088e926
SG		 605 struct in_addr *gw;
606
607 gw = malloc(sizeof(*gw));
25a908b8 608 if (!gw)
e088e926 609 return -1;
e088e926 610
25a908b8
CB		 611 ret = inet_pton(AF_INET, value, gw);
612 if (!ret || ret < 0) {
613 SYSERROR("Invalid ipv4 gateway address \"%s\"", value);
53719062 614 free(gw);
19a26f82
MK		 615 return -1;
616 }
617
618 netdev->ipv4_gateway = gw;
619 netdev->ipv4_gateway_auto = false;
f8fee0e2
MK		 620 }
621
f8fee0e2
MK		 622 return 0;
623}
624
2e44ae28
CB		 625static int set_config_net_ipv6_address(const char *key, const char *value,
626 struct lxc_conf *lxc_conf, void *data)
c2cc9f0a 627{
25a908b8 628 int ret;
070a05af 629 struct lxc_netdev *netdev = data;
c2cc9f0a 630 struct lxc_inet6dev *inet6dev;
631 struct lxc_list *list;
504a2217 632 char *slash, *valdup, *netmask;
c2cc9f0a 633
6bed0fb6 634 if (lxc_config_value_empty(value))
2e44ae28 635 return clr_config_net_ipv6_address(key, lxc_conf, data);
6bed0fb6 636
33c945e0 637 if (!netdev)
c2cc9f0a 638 return -1;
c2cc9f0a 639
640 inet6dev = malloc(sizeof(*inet6dev));
25a908b8 641 if (!inet6dev)
c2cc9f0a 642 return -1;
25a908b8 643
c2cc9f0a 644 memset(inet6dev, 0, sizeof(*inet6dev));
645
646 list = malloc(sizeof(*list));
647 if (!list) {
28027320 648 free(inet6dev);
c2cc9f0a 649 return -1;
650 }
651
652 lxc_list_init(list);
653 list->elem = inet6dev;
654
956edc54
SG		 655 valdup = strdup(value);
656 if (!valdup) {
28027320
SH		 657 free(list);
658 free(inet6dev);
956edc54
SG		 659 return -1;
660 }
661
a059591e 662 inet6dev->prefix = 64;
12a50cc6 663 slash = strstr(valdup, "/");
c2cc9f0a 664 if (slash) {
665 *slash = '\0';
666 netmask = slash + 1;
f54f8d0b
CB		 667 ret = lxc_safe_uint(netmask, &inet6dev->prefix);
668 if (ret < 0) {
669 free(list);
670 free(inet6dev);
671 free(valdup);
1c633398 672 return -1;
f54f8d0b 673 }
c2cc9f0a 674 }
675
25a908b8
CB		 676 ret = inet_pton(AF_INET6, valdup, &inet6dev->addr);
677 if (!ret || ret < 0) {
678 SYSERROR("Invalid ipv6 address \"%s\"", valdup);
28027320
SH		 679 free(list);
680 free(inet6dev);
956edc54 681 free(valdup);
c2cc9f0a 682 return -1;
683 }
684
8538f388 685 lxc_list_add_tail(&netdev->ipv6, list);
c2cc9f0a 686
956edc54 687 free(valdup);
c2cc9f0a 688 return 0;
689}
690
f9373e40
CB		 691static int set_config_net_ipv6_gateway(const char *key, const char *value,
692 struct lxc_conf *lxc_conf, void *data)
f8fee0e2 693{
070a05af 694 struct lxc_netdev *netdev = data;
f8fee0e2 695
6bed0fb6 696 if (lxc_config_value_empty(value))
f9373e40 697 return clr_config_net_ipv6_gateway(key, lxc_conf, data);
6bed0fb6 698
f8fee0e2
MK		 699 if (!netdev)
700 return -1;
701
e088e926 702 free(netdev->ipv6_gateway);
f8fee0e2 703
ab6faf2e 704 if (!strcmp(value, "auto")) {
19a26f82
MK		 705 netdev->ipv6_gateway = NULL;
706 netdev->ipv6_gateway_auto = true;
707 } else {
25a908b8 708 int ret;
8fb86a37
SH		 709 struct in6_addr *gw;
710
bec695f3 711 gw = malloc(sizeof(*gw));
25a908b8 712 if (!gw)
bec695f3 713 return -1;
bec695f3 714
25a908b8
CB		 715 ret = inet_pton(AF_INET6, value, gw);
716 if (!ret || ret < 0) {
717 SYSERROR("Invalid ipv6 gateway address \"%s\"", value);
28027320 718 free(gw);
19a26f82
MK		 719 return -1;
720 }
721
722 netdev->ipv6_gateway = gw;
723 netdev->ipv6_gateway_auto = false;
f8fee0e2
MK		 724 }
725
f8fee0e2
MK		 726 return 0;
727}
728
f9373e40
CB		 729static int set_config_net_script_up(const char *key, const char *value,
730 struct lxc_conf *lxc_conf, void *data)
e3b4c4c4 731{
070a05af 732 struct lxc_netdev *netdev = data;
e3b4c4c4 733
6bed0fb6 734 if (lxc_config_value_empty(value))
f9373e40 735 return clr_config_net_script_up(key, lxc_conf, data);
6bed0fb6 736
e3b4c4c4 737 if (!netdev)
504a2217 738 return -1;
e3b4c4c4 739
713046e3 740 return set_config_string_item(&netdev->upscript, value);
8fc8295a
DE		 741}
742
f9373e40
CB		 743static int set_config_net_script_down(const char *key, const char *value,
744 struct lxc_conf *lxc_conf, void *data)
8fc8295a 745{
070a05af 746 struct lxc_netdev *netdev = data;
8fc8295a 747
6bed0fb6 748 if (lxc_config_value_empty(value))
f9373e40 749 return clr_config_net_script_down(key, lxc_conf, data);
6bed0fb6 750
8fc8295a 751 if (!netdev)
504a2217 752 return -1;
8fc8295a 753
713046e3 754 return set_config_string_item(&netdev->downscript, value);
e3b4c4c4
ST		 755}
756
26ddeedd
SH		 757static int add_hook(struct lxc_conf *lxc_conf, int which, char *hook)
758{
759 struct lxc_list *hooklist;
760
761 hooklist = malloc(sizeof(*hooklist));
762 if (!hooklist) {
763 free(hook);
764 return -1;
765 }
504a2217 766
26ddeedd
SH		 767 hooklist->elem = hook;
768 lxc_list_add_tail(&lxc_conf->hooks[which], hooklist);
769 return 0;
770}
771
0b427da0
CB		 772static int set_config_seccomp_profile(const char *key, const char *value,
773 struct lxc_conf *lxc_conf, void *data)
8f2c3a70 774{
713046e3 775 return set_config_path_item(&lxc_conf->seccomp, value);
8f2c3a70
SH		 776}
777
5cda27c1
SH		 778static int set_config_execute_cmd(const char *key, const char *value,
779 struct lxc_conf *lxc_conf, void *data)
780{
781 return set_config_path_item(&lxc_conf->execute_cmd, value);
782}
783
713046e3 784static int set_config_init_cmd(const char *key, const char *value,
c7e27aaf 785 struct lxc_conf *lxc_conf, void *data)
67c660d0 786{
713046e3 787 return set_config_path_item(&lxc_conf->init_cmd, value);
67c660d0
SG		 788}
789
3c491553
L		 790static int set_config_init_cwd(const char *key, const char *value,
791 struct lxc_conf *lxc_conf, void *data)
792{
793 return set_config_path_item(&lxc_conf->init_cwd, value);
794}
795
713046e3 796static int set_config_init_uid(const char *key, const char *value,
c7e27aaf 797 struct lxc_conf *lxc_conf, void *data)
72bb04e4 798{
d1e5d636
CB		 799 unsigned int init_uid;
800
663e9916 801 if (lxc_config_value_empty(value)) {
2e7cde40 802 lxc_conf->init_uid = 0;
fee80911 803 return 0;
2e7cde40 804 }
fee80911 805
d1e5d636
CB		 806 if (lxc_safe_uint(value, &init_uid) < 0)
807 return -1;
25a908b8 808
d1e5d636
CB		 809 lxc_conf->init_uid = init_uid;
810
72bb04e4
PT		 811 return 0;
812}
813
713046e3 814static int set_config_init_gid(const char *key, const char *value,
c7e27aaf 815 struct lxc_conf *lxc_conf, void *data)
72bb04e4 816{
d1e5d636
CB		 817 unsigned int init_gid;
818
663e9916 819 if (lxc_config_value_empty(value)) {
2debb6e6 820 lxc_conf->init_gid = 0;
a757cc7d 821 return 0;
2debb6e6 822 }
a757cc7d 823
d1e5d636
CB		 824 if (lxc_safe_uint(value, &init_gid) < 0)
825 return -1;
25a908b8 826
d1e5d636
CB		 827 lxc_conf->init_gid = init_gid;
828
72bb04e4
PT		 829 return 0;
830}
831
466c2e93 832static int set_config_hooks(const char *key, const char *value,
c7e27aaf 833 struct lxc_conf *lxc_conf, void *data)
26ddeedd 834{
7d0eb87e 835 char *copy;
72bb04e4 836
663e9916 837 if (lxc_config_value_empty(value))
7d0eb87e
SH		 838 return lxc_clear_hooks(lxc_conf, key);
839
a182feae 840 if (strcmp(key + 4, "hook") == 0) {
25a908b8 841 ERROR("lxc.hook must not have a value");
6b0d5538
SH		 842 return -1;
843 }
25a908b8 844
7d0eb87e 845 copy = strdup(value);
25a908b8 846 if (!copy)
26ddeedd 847 return -1;
504a2217 848
a182feae 849 if (strcmp(key + 9, "pre-start") == 0)
26ddeedd 850 return add_hook(lxc_conf, LXCHOOK_PRESTART, copy);
08dd2805
SH		 851 else if (strcmp(key + 9, "start-host") == 0)
852 return add_hook(lxc_conf, LXCHOOK_START_HOST, copy);
a182feae 853 else if (strcmp(key + 9, "pre-mount") == 0)
5ea6163a 854 return add_hook(lxc_conf, LXCHOOK_PREMOUNT, copy);
a182feae 855 else if (strcmp(key + 9, "autodev") == 0)
f7bee6c6 856 return add_hook(lxc_conf, LXCHOOK_AUTODEV, copy);
a182feae 857 else if (strcmp(key + 9, "mount") == 0)
26ddeedd 858 return add_hook(lxc_conf, LXCHOOK_MOUNT, copy);
a182feae 859 else if (strcmp(key + 9, "start") == 0)
26ddeedd 860 return add_hook(lxc_conf, LXCHOOK_START, copy);
a182feae 861 else if (strcmp(key + 9, "stop") == 0)
52492063 862 return add_hook(lxc_conf, LXCHOOK_STOP, copy);
a182feae 863 else if (strcmp(key + 9, "post-stop") == 0)
26ddeedd 864 return add_hook(lxc_conf, LXCHOOK_POSTSTOP, copy);
a182feae 865 else if (strcmp(key + 9, "clone") == 0)
148e91f5 866 return add_hook(lxc_conf, LXCHOOK_CLONE, copy);
a182feae 867 else if (strcmp(key + 9, "destroy") == 0)
37cf711b 868 return add_hook(lxc_conf, LXCHOOK_DESTROY, copy);
504a2217 869
26ddeedd
SH		 870 free(copy);
871 return -1;
872}
873
44ae0fb6
CB		 874static int set_config_hooks_version(const char *key, const char *value,
875 struct lxc_conf *lxc_conf, void *data)
876{
877 int ret;
878 unsigned int tmp;
879
880 if (lxc_config_value_empty(value))
881 return clr_config_hooks_version(key, lxc_conf, NULL);
882
883 ret = lxc_safe_uint(value, &tmp);
884 if (ret < 0)
885 return -1;
886
887 if (tmp > 1) {
888 ERROR("Invalid hook version specified. Currently only 0 "
889 "(legacy) and 1 are supported");
890 return -1;
891 }
892
893 lxc_conf->hooks_version = tmp;
894 return 0;
895}
896
713046e3 897static int set_config_personality(const char *key, const char *value,
c7e27aaf 898 struct lxc_conf *lxc_conf, void *data)
cccc74b5 899{
525f0002 900 signed long personality = lxc_config_parse_arch(value);
cccc74b5 901
525f0002
CS		 902 if (personality >= 0)
903 lxc_conf->personality = personality;
904 else
25a908b8 905 WARN("Unsupported personality \"%s\"", value);
970ab589
DL		 906
907 return 0;
cccc74b5
DL		 908}
909
232763d6
CB		 910static int set_config_pty_max(const char *key, const char *value,
911 struct lxc_conf *lxc_conf, void *data)
10db618d 912{
e528c735
CB		 913 int ret;
914 unsigned int max = 0;
915
663e9916 916 if (lxc_config_value_empty(value)) {
e528c735 917 lxc_conf->pty_max = 0;
884a4580 918 return 0;
ec200ce9 919 }
884a4580 920
e528c735
CB		 921 ret = lxc_safe_uint(value, &max);
922 if (ret < 0)
17919969 923 return -1;
10db618d 924
e528c735 925 lxc_conf->pty_max = max;
10db618d 926 return 0;
927}
928
a182feae
CB		 929/* We only need to check whether the first byte of the key after the lxc.start.
930 * prefix matches our expectations since they fortunately all start with a
931 * different letter. If anything was wrong with the key we would have already
932 * noticed when the callback was called.
933 */
713046e3 934static int set_config_start(const char *key, const char *value,
c7e27aaf 935 struct lxc_conf *lxc_conf, void *data)
ee1e7aa0 936{
ebb80f95
CB		 937 bool is_empty;
938
663e9916 939 is_empty = lxc_config_value_empty(value);
ebb80f95 940
a182feae 941 if (*(key + 10) == 'a') { /* lxc.start.auto */
ebb80f95
CB		 942 if (is_empty) {
943 lxc_conf->start_auto = 0;
944 return 0;
945 }
61ff8fc8 946
3590152f
CB		 947 if (lxc_safe_uint(value, &lxc_conf->start_auto) < 0)
948 return -1;
ebb80f95 949
3590152f
CB		 950 if (lxc_conf->start_auto > 1)
951 return -1;
ebb80f95 952
ee1e7aa0 953 return 0;
a182feae 954 } else if (*(key + 10) == 'd') { /* lxc.start.delay */
ebb80f95
CB		 955 if (is_empty) {
956 lxc_conf->start_delay = 0;
957 return 0;
958 }
959
ebb80f95 960 return lxc_safe_uint(value, &lxc_conf->start_delay);
a182feae 961 } else if (*(key + 10) == 'o') { /* lxc.start.order */
ebb80f95
CB		 962 if (is_empty) {
963 lxc_conf->start_order = 0;
964 return 0;
965 }
966
ebb80f95 967 return lxc_safe_int(value, &lxc_conf->start_order);
ee1e7aa0 968 }
ebb80f95 969
ee1e7aa0
SG		 970 return -1;
971}
972
713046e3 973static int set_config_monitor(const char *key, const char *value,
c7e27aaf 974 struct lxc_conf *lxc_conf, void *data)
a8dfe4e0 975{
663e9916 976 if (lxc_config_value_empty(value)) {
4ad9cd26 977 lxc_conf->monitor_unshare = 0;
a8dfe4e0
WB		 978 return 0;
979 }
4ad9cd26 980
a182feae 981 if (strcmp(key + 12, "unshare") == 0)
4ad9cd26
CB		 982 return lxc_safe_uint(value, &lxc_conf->monitor_unshare);
983
a8dfe4e0
WB		 984 return -1;
985}
986
258f8051
CB		 987static int set_config_monitor_signal_pdeath(const char *key, const char *value,
988 struct lxc_conf *lxc_conf, void *data)
989{
990 if (lxc_config_value_empty(value)) {
991 lxc_conf->monitor_signal_pdeath = 0;
992 return 0;
993 }
994
995 if (strcmp(key + 12, "signal.pdeath") == 0) {
996 int sig_n;
997
998 sig_n = sig_parse(value);
999 if (sig_n < 0)
1000 return -1;
1001
1002 lxc_conf->monitor_signal_pdeath = sig_n;
1003 return 0;
1004 }
1005
1006 return -EINVAL;
1007}
1008
713046e3 1009static int set_config_group(const char *key, const char *value,
c7e27aaf 1010 struct lxc_conf *lxc_conf, void *data)
ee1e7aa0 1011{
62dd965e 1012 char *groups, *token;
ee1e7aa0 1013 struct lxc_list *grouplist;
62dd965e 1014 int ret = 0;
ee1e7aa0 1015
663e9916 1016 if (lxc_config_value_empty(value))
ee1e7aa0
SG		 1017 return lxc_clear_groups(lxc_conf);
1018
1019 groups = strdup(value);
25a908b8 1020 if (!groups)
ee1e7aa0 1021 return -1;
ee1e7aa0 1022
25a908b8
CB		 1023 /* In case several groups are specified in a single line split these
1024 * groups in a single element for the list.
504a2217 1025 */
62dd965e 1026 lxc_iterate_parts(token, groups, " \t") {
ee1e7aa0 1027 grouplist = malloc(sizeof(*grouplist));
62dd965e
CB		 1028 if (!grouplist) {
1029 ret = -1;
ee1e7aa0 1030 break;
62dd965e 1031 }
ee1e7aa0
SG		 1032
1033 grouplist->elem = strdup(token);
1034 if (!grouplist->elem) {
ee1e7aa0 1035 free(grouplist);
62dd965e 1036 ret = -1;
ee1e7aa0
SG		 1037 break;
1038 }
1039
1040 lxc_list_add_tail(&lxc_conf->groups, grouplist);
d028235d 1041 }
ee1e7aa0
SG		 1042
1043 free(groups);
ee1e7aa0
SG		 1044 return ret;
1045}
1046
713046e3 1047static int set_config_environment(const char *key, const char *value,
c7e27aaf 1048 struct lxc_conf *lxc_conf, void *data)
7c661726
MP		 1049{
1050 struct lxc_list *list_item = NULL;
1051
663e9916 1052 if (lxc_config_value_empty(value))
ab799c0b
SG		 1053 return lxc_clear_environment(lxc_conf);
1054
7c661726
MP		 1055 list_item = malloc(sizeof(*list_item));
1056 if (!list_item)
504a2217 1057 goto on_error;
7c661726 1058
5eab47bc
CB		 1059 if (!strchr(value, '=')) {
1060 const char *env_val;
1061 const char *env_key = value;
1062 const char *env_var[3] = {0};
1063
1064 env_val = getenv(env_key);
1065 if (!env_val)
1066 goto on_error;
1067
1068 env_var[0] = env_key;
1069 env_var[1] = env_val;
1070 list_item->elem = lxc_string_join("=", env_var, false);
1071 } else {
1072 list_item->elem = strdup(value);
1073 }
7c661726
MP		 1074
1075 if (!list_item->elem)
504a2217 1076 goto on_error;
7c661726
MP		 1077
1078 lxc_list_add_tail(&lxc_conf->environment, list_item);
1079
1080 return 0;
1081
504a2217 1082on_error:
f10fad2f 1083 free(list_item);
7c661726
MP		 1084 return -1;
1085}
1086
fe1c5887
CB		 1087static int set_config_tty_max(const char *key, const char *value,
1088 struct lxc_conf *lxc_conf, void *data)
b0a33c1e 1089{
885766f5
CB		 1090 int ret;
1091 unsigned int nbtty = 0;
1092
663e9916 1093 if (lxc_config_value_empty(value)) {
885766f5 1094 lxc_conf->ttys.max = 0;
fb12b12a 1095 return 0;
cb508ee8 1096 }
fb12b12a 1097
885766f5
CB		 1098 ret = lxc_safe_uint(value, &nbtty);
1099 if (ret < 0)
1100 return -1;
1101
1102 lxc_conf->ttys.max = nbtty;
1103 return 0;
b0a33c1e 1104}
1105
42e53c29 1106static int set_config_tty_dir(const char *key, const char *value,
c7e27aaf 1107 struct lxc_conf *lxc_conf, void *data)
7c6ef2a2 1108{
885766f5 1109 return set_config_string_item_max(&lxc_conf->ttys.dir, value,
504a2217 1110 NAME_MAX + 1);
7c6ef2a2
SH		 1111}
1112
953fe44f
CB		 1113static int set_config_apparmor_profile(const char *key, const char *value,
1114 struct lxc_conf *lxc_conf, void *data)
e075f5d9 1115{
713046e3 1116 return set_config_string_item(&lxc_conf->lsm_aa_profile, value);
fe4de9a6
DE		 1117}
1118
953fe44f
CB		 1119static int set_config_apparmor_allow_incomplete(const char *key,
1120 const char *value,
1121 struct lxc_conf *lxc_conf,
1122 void *data)
7aff4f43 1123{
663e9916 1124 if (lxc_config_value_empty(value)) {
cccfa758 1125 lxc_conf->lsm_aa_allow_incomplete = 0;
a678e9fa 1126 return 0;
cccfa758 1127 }
a678e9fa 1128
a56e2df9
CB		 1129 if (lxc_safe_uint(value, &lxc_conf->lsm_aa_allow_incomplete) < 0)
1130 return -1;
7aff4f43 1131
25a908b8 1132 if (lxc_conf->lsm_aa_allow_incomplete > 1)
a56e2df9 1133 return -1;
7aff4f43
SH		 1134
1135 return 0;
1136}
1137
1800f924
WB		 1138static int set_config_apparmor_allow_nesting(const char *key,
1139 const char *value,
1140 struct lxc_conf *lxc_conf,
1141 void *data)
1142{
1143 if (lxc_config_value_empty(value))
1144 return clr_config_apparmor_allow_nesting(key, lxc_conf, NULL);
1145
1146 if (lxc_safe_uint(value, &lxc_conf->lsm_aa_allow_nesting) < 0)
1147 return -1;
1148
1149 if (lxc_conf->lsm_aa_allow_nesting > 1)
1150 return -1;
1151
1152 return 0;
1153}
1154
1155static int set_config_apparmor_raw(const char *key,
1156 const char *value,
1157 struct lxc_conf *lxc_conf,
1158 void *data)
1159{
1160 char *elem;
1161 struct lxc_list *list;
1162
1163 if (lxc_config_value_empty(value))
1164 return lxc_clear_apparmor_raw(lxc_conf);
1165
1166 list = malloc(sizeof(*list));
1167 if (!list) {
1168 errno = ENOMEM;
1169 return -1;
1170 }
1171
1172 elem = strdup(value);
1173 if (!elem) {
1174 free(list);
1175 return -1;
1176 }
1177 list->elem = elem;
1178
1179 lxc_list_add_tail(&lxc_conf->lsm_aa_raw, list);
1180
1181 return 0;
1182}
1183
953fe44f
CB		 1184static int set_config_selinux_context(const char *key, const char *value,
1185 struct lxc_conf *lxc_conf, void *data)
fe4de9a6 1186{
713046e3 1187 return set_config_string_item(&lxc_conf->lsm_se_context, value);
e075f5d9 1188}
e075f5d9 1189
46cc906d 1190static int set_config_log_file(const char *key, const char *value,
c7e27aaf 1191 struct lxc_conf *c, void *data)
4a85ce2a 1192{
6d03d92a
DE		 1193 int ret;
1194
663e9916 1195 if (lxc_config_value_empty(value)) {
0d601acb
CB		 1196 free(c->logfile);
1197 c->logfile = NULL;
1198 return 0;
1199 }
1200
1201 /* Store these values in the lxc_conf, and then try to set for actual
504a2217
CB		 1202 * current logging.
1203 */
713046e3 1204 ret = set_config_path_item(&c->logfile, value);
6d03d92a 1205 if (ret == 0)
858377e4 1206 ret = lxc_log_set_file(&c->logfd, c->logfile);
25a908b8 1207
6d03d92a 1208 return ret;
4a85ce2a
SH		 1209}
1210
46cc906d 1211static int set_config_log_level(const char *key, const char *value,
c7e27aaf 1212 struct lxc_conf *lxc_conf, void *data)
4a85ce2a 1213{
9ea87d5d
SH		 1214 int newlevel;
1215
663e9916 1216 if (lxc_config_value_empty(value)) {
4b73005c 1217 lxc_conf->loglevel = LXC_LOG_LEVEL_NOTSET;
4a85ce2a 1218 return 0;
575b9745 1219 }
4a85ce2a 1220
a56e2df9
CB		 1221 if (value[0] >= '0' && value[0] <= '9') {
1222 if (lxc_safe_int(value, &newlevel) < 0)
1223 return -1;
1224 } else {
9ea87d5d 1225 newlevel = lxc_log_priority_to_int(value);
a56e2df9 1226 }
575b9745 1227
504a2217 1228 /* Store these values in the lxc_conf, and then try to set for actual
575b9745
CB		 1229 * current logging.
1230 */
b40a606e 1231 lxc_conf->loglevel = newlevel;
858377e4 1232 return lxc_log_set_level(&lxc_conf->loglevel, newlevel);
4a85ce2a
SH		 1233}
1234
713046e3 1235static int set_config_autodev(const char *key, const char *value,
c7e27aaf 1236 struct lxc_conf *lxc_conf, void *data)
c6883f38 1237{
663e9916 1238 if (lxc_config_value_empty(value)) {
1045031e 1239 lxc_conf->autodev = 0;
180abbc0 1240 return 0;
1045031e 1241 }
180abbc0 1242
ff6cb4ed
CB		 1243 if (lxc_safe_uint(value, &lxc_conf->autodev) < 0)
1244 return -1;
c6883f38 1245
25a908b8 1246 if (lxc_conf->autodev > 1)
ff6cb4ed 1247 return -1;
c6883f38
SH		 1248
1249 return 0;
1250}
1251
55c84efc 1252static int set_config_signal_halt(const char *key, const char *value,
c7e27aaf 1253 struct lxc_conf *lxc_conf, void *data)
f0f1d8c0 1254{
62a085fb 1255 int sig_n;
f0f1d8c0 1256
663e9916 1257 if (lxc_config_value_empty(value)) {
c1a64603 1258 lxc_conf->haltsignal = 0;
955912f0 1259 return 0;
c1a64603 1260 }
955912f0 1261
62a085fb 1262 sig_n = sig_parse(value);
f0f1d8c0
DE		 1263 if (sig_n < 0)
1264 return -1;
25a908b8 1265
f0f1d8c0
DE		 1266 lxc_conf->haltsignal = sig_n;
1267
1268 return 0;
1269}
1270
55c84efc 1271static int set_config_signal_reboot(const char *key, const char *value,
c7e27aaf 1272 struct lxc_conf *lxc_conf, void *data)
dd267776 1273{
9d7e7587 1274 int sig_n;
dd267776 1275
663e9916 1276 if (lxc_config_value_empty(value)) {
18fcee44 1277 lxc_conf->rebootsignal = 0;
9d7e7587 1278 return 0;
18fcee44 1279 }
9d7e7587
CB		 1280
1281 sig_n = sig_parse(value);
dd267776
BP		 1282 if (sig_n < 0)
1283 return -1;
25a908b8 1284
dd267776
BP		 1285 lxc_conf->rebootsignal = sig_n;
1286
1287 return 0;
1288}
1289
55c84efc 1290static int set_config_signal_stop(const char *key, const char *value,
c7e27aaf 1291 struct lxc_conf *lxc_conf, void *data)
a84b9932 1292{
6ca6aedd 1293 int sig_n;
a84b9932 1294
663e9916 1295 if (lxc_config_value_empty(value)) {
4100d1a7 1296 lxc_conf->stopsignal = 0;
6ca6aedd 1297 return 0;
4100d1a7 1298 }
6ca6aedd
CB		 1299
1300 sig_n = sig_parse(value);
a84b9932
AV		 1301 if (sig_n < 0)
1302 return -1;
25a908b8 1303
a84b9932
AV		 1304 lxc_conf->stopsignal = sig_n;
1305
1306 return 0;
1307}
1308
54860ed0
CB		 1309static int __set_config_cgroup_controller(const char *key, const char *value,
1310 struct lxc_conf *lxc_conf, int version)
576f946d 1311{
54860ed0
CB		 1312 const char *subkey, *token;
1313 size_t token_len;
bf83c5b9
MS		 1314 struct lxc_list *cglist = NULL;
1315 struct lxc_cgroup *cgelem = NULL;
576f946d 1316
663e9916 1317 if (lxc_config_value_empty(value))
54860ed0
CB		 1318 return lxc_clear_cgroups(lxc_conf, key, version);
1319
1320 if (version == CGROUP2_SUPER_MAGIC) {
1321 token = "lxc.cgroup2.";
1322 token_len = 12;
1323 } else if (version == CGROUP_SUPER_MAGIC) {
1324 token = "lxc.cgroup.";
1325 token_len = 11;
1326 } else {
1327 return -EINVAL;
1328 }
576f946d 1329
54860ed0
CB		 1330 if (strncmp(key, token, token_len) != 0)
1331 return -EINVAL;
a871ff6b 1332
54860ed0
CB		 1333 subkey = key + token_len;
1334 if (*subkey == '\0')
1335 return -EINVAL;
576f946d 1336
1337 cglist = malloc(sizeof(*cglist));
1338 if (!cglist)
bf83c5b9 1339 goto out;
576f946d 1340
1341 cgelem = malloc(sizeof(*cgelem));
bf83c5b9
MS		 1342 if (!cgelem)
1343 goto out;
1344 memset(cgelem, 0, sizeof(*cgelem));
576f946d 1345
1346 cgelem->subsystem = strdup(subkey);
54860ed0
CB		 1347 if (!cgelem->subsystem)
1348 goto out;
bf83c5b9 1349
54860ed0
CB		 1350 cgelem->value = strdup(value);
1351 if (!cgelem->value)
bf83c5b9
MS		 1352 goto out;
1353
54860ed0
CB		 1354 cgelem->version = version;
1355
1356 lxc_list_add_elem(cglist, cgelem);
576f946d 1357
54860ed0
CB		 1358 if (version == CGROUP2_SUPER_MAGIC)
1359 lxc_list_add_tail(&lxc_conf->cgroup2, cglist);
1360 else
1361 lxc_list_add_tail(&lxc_conf->cgroup, cglist);
576f946d 1362
1363 return 0;
bf83c5b9
MS		 1364
1365out:
f10fad2f 1366 free(cglist);
bf83c5b9 1367 if (cgelem) {
f10fad2f 1368 free(cgelem->subsystem);
f10fad2f 1369 free(cgelem->value);
bf83c5b9
MS		 1370 free(cgelem);
1371 }
1372
1373 return -1;
576f946d 1374}
1375
54860ed0
CB		 1376static int set_config_cgroup_controller(const char *key, const char *value,
1377 struct lxc_conf *lxc_conf, void *data)
1378{
1379 return __set_config_cgroup_controller(key, value, lxc_conf,
1380 CGROUP_SUPER_MAGIC);
1381}
1382
1383static int set_config_cgroup2_controller(const char *key, const char *value,
1384 struct lxc_conf *lxc_conf, void *data)
1385{
1386 return __set_config_cgroup_controller(key, value, lxc_conf,
1387 CGROUP2_SUPER_MAGIC);
1388}
1389
1390
43654d34
CB		 1391static int set_config_cgroup_dir(const char *key, const char *value,
1392 struct lxc_conf *lxc_conf, void *data)
1393{
1394 if (lxc_config_value_empty(value))
1395 return clr_config_cgroup_dir(key, lxc_conf, NULL);
1396
43654d34
CB		 1397 return set_config_string_item(&lxc_conf->cgroup_meta.dir, value);
1398}
1399
9caee129
CB		 1400static int set_config_cgroup_relative(const char *key, const char *value,
1401 struct lxc_conf *lxc_conf, void *data)
76f0e2e7
CB		 1402{
1403 unsigned int converted;
1404 int ret;
1405
1406 if (lxc_config_value_empty(value))
9caee129 1407 return clr_config_cgroup_relative(key, lxc_conf, NULL);
76f0e2e7
CB		 1408
1409 ret = lxc_safe_uint(value, &converted);
1410 if (ret < 0)
1411 return -ret;
1412
1413 if (converted == 1) {
9caee129 1414 lxc_conf->cgroup_meta.relative = true;
76f0e2e7
CB		 1415 return 0;
1416 }
1417
1418 if (converted == 0) {
9caee129 1419 lxc_conf->cgroup_meta.relative = false;
76f0e2e7
CB		 1420 return 0;
1421 }
1422
1423 return -EINVAL;
1424}
1425
240d4b74 1426static int set_config_prlimit(const char *key, const char *value,
c7e27aaf 1427 struct lxc_conf *lxc_conf, void *data)
c6d09e15 1428{
c6d09e15
WB		 1429 struct lxc_list *iter;
1430 struct rlimit limit;
71460831 1431 rlim_t limit_value;
504a2217
CB		 1432 struct lxc_list *limlist = NULL;
1433 struct lxc_limit *limelem = NULL;
c6d09e15 1434
663e9916 1435 if (lxc_config_value_empty(value))
c6d09e15
WB		 1436 return lxc_clear_limits(lxc_conf, key);
1437
6333c915 1438 if (strncmp(key, "lxc.prlimit.", STRLITERALLEN("lxc.prlimit.")) != 0)
c6d09e15
WB		 1439 return -1;
1440
6333c915 1441 key += STRLITERALLEN("lxc.prlimit.");
c6d09e15
WB		 1442
1443 /* soft limit comes first in the value */
1444 if (!parse_limit_value(&value, &limit_value))
1445 return -1;
1446 limit.rlim_cur = limit_value;
1447
1448 /* skip spaces and a colon */
1449 while (isspace(*value))
1450 ++value;
504a2217 1451
c6d09e15
WB		 1452 if (*value == ':')
1453 ++value;
1454 else if (*value) /* any other character is an error here */
1455 return -1;
504a2217 1456
c6d09e15
WB		 1457 while (isspace(*value))
1458 ++value;
1459
1460 /* optional hard limit */
1461 if (*value) {
1462 if (!parse_limit_value(&value, &limit_value))
1463 return -1;
1464 limit.rlim_max = limit_value;
504a2217 1465
c6d09e15
WB		 1466 /* check for trailing garbage */
1467 while (isspace(*value))
1468 ++value;
504a2217 1469
c6d09e15
WB		 1470 if (*value)
1471 return -1;
1472 } else {
1473 /* a single value sets both hard and soft limit */
1474 limit.rlim_max = limit.rlim_cur;
1475 }
1476
1477 /* find existing list element */
7edd0540 1478 lxc_list_for_each(iter, &lxc_conf->limits) {
c6d09e15
WB		 1479 limelem = iter->elem;
1480 if (!strcmp(key, limelem->resource)) {
1481 limelem->limit = limit;
1482 return 0;
1483 }
1484 }
1485
1486 /* allocate list element */
1487 limlist = malloc(sizeof(*limlist));
1488 if (!limlist)
7edd0540 1489 goto on_error;
2e6e3feb 1490
c6d09e15
WB		 1491 limelem = malloc(sizeof(*limelem));
1492 if (!limelem)
7edd0540 1493 goto on_error;
c6d09e15
WB		 1494 memset(limelem, 0, sizeof(*limelem));
1495
1496 limelem->resource = strdup(key);
1497 if (!limelem->resource)
7edd0540 1498 goto on_error;
c6d09e15
WB		 1499 limelem->limit = limit;
1500
7edd0540 1501 lxc_list_add_elem(limlist, limelem);;
c6d09e15
WB		 1502
1503 lxc_list_add_tail(&lxc_conf->limits, limlist);
1504
1505 return 0;
1506
7edd0540 1507on_error:
c6d09e15
WB		 1508 free(limlist);
1509 if (limelem) {
1510 free(limelem->resource);
1511 free(limelem);
1512 }
1513 return -1;
1514}
1515
7edd0540
L		 1516static int set_config_sysctl(const char *key, const char *value,
1517 struct lxc_conf *lxc_conf, void *data)
1518{
1519 struct lxc_list *iter;
e409b214 1520 char *replace_value = NULL;
7edd0540
L		 1521 struct lxc_list *sysctl_list = NULL;
1522 struct lxc_sysctl *sysctl_elem = NULL;
7edd0540
L		 1523
1524 if (lxc_config_value_empty(value))
e409b214 1525 return clr_config_sysctl(key, lxc_conf, NULL);
7edd0540 1526
6333c915 1527 if (strncmp(key, "lxc.sysctl.", STRLITERALLEN("lxc.sysctl.")) != 0)
7edd0540
L		 1528 return -1;
1529
6333c915 1530 key += STRLITERALLEN("lxc.sysctl.");
7edd0540
L		 1531
1532 /* find existing list element */
1533 lxc_list_for_each(iter, &lxc_conf->sysctls) {
1534 sysctl_elem = iter->elem;
e409b214
CB		 1535
1536 if (strcmp(key, sysctl_elem->key) != 0)
1537 continue;
1538
1539 replace_value = strdup(value);
1540 if (!replace_value)
1541 return -1;
1542
1543 free(sysctl_elem->value);
1544 sysctl_elem->value = replace_value;
1545 return 0;
7edd0540
L		 1546 }
1547
1548 /* allocate list element */
1549 sysctl_list = malloc(sizeof(*sysctl_list));
1550 if (!sysctl_list)
1551 goto on_error;
1552
1553 sysctl_elem = malloc(sizeof(*sysctl_elem));
1554 if (!sysctl_elem)
1555 goto on_error;
1556 memset(sysctl_elem, 0, sizeof(*sysctl_elem));
1557
1558 sysctl_elem->key = strdup(key);
1559 if (!sysctl_elem->key)
1560 goto on_error;
1561
1562 sysctl_elem->value = strdup(value);
1563 if (!sysctl_elem->value)
1564 goto on_error;
1565
1566 lxc_list_add_elem(sysctl_list, sysctl_elem);
1567
1568 lxc_list_add_tail(&lxc_conf->sysctls, sysctl_list);
1569
1570 return 0;
1571
1572on_error:
1573 free(sysctl_list);
1574 if (sysctl_elem) {
1575 free(sysctl_elem->key);
1576 free(sysctl_elem->value);
1577 free(sysctl_elem);
1578 }
1579 return -1;
7edd0540
L		 1580}
1581
61d7a733
YT		 1582static int set_config_proc(const char *key, const char *value,
1583 struct lxc_conf *lxc_conf, void *data)
1584{
1585 const char *subkey;
1586 struct lxc_list *proclist = NULL;
1587 struct lxc_proc *procelem = NULL;
1588
1589 if (lxc_config_value_empty(value))
1590 return clr_config_proc(key, lxc_conf, NULL);
1591
6333c915 1592 if (strncmp(key, "lxc.proc.", STRLITERALLEN("lxc.proc.")) != 0)
61d7a733
YT		 1593 return -1;
1594
6333c915 1595 subkey = key + STRLITERALLEN("lxc.proc.");
61d7a733
YT		 1596 if (*subkey == '\0')
1597 return -EINVAL;
1598
1599 proclist = malloc(sizeof(*proclist));
1600 if (!proclist)
1601 goto on_error;
1602
1603 procelem = malloc(sizeof(*procelem));
1604 if (!procelem)
1605 goto on_error;
1606 memset(procelem, 0, sizeof(*procelem));
1607
1608 procelem->filename = strdup(subkey);
1609 procelem->value = strdup(value);
1610
1611 if (!procelem->filename || !procelem->value)
1612 goto on_error;
1613
1614 proclist->elem = procelem;
1615
1616 lxc_list_add_tail(&lxc_conf->procs, proclist);
1617
1618 return 0;
1619
1620on_error:
1621 free(proclist);
1622 if (procelem) {
1623 free(procelem->filename);
1624 free(procelem->value);
1625 free(procelem);
1626 }
1627
1628 return -1;
1629}
1630
5014ff2e 1631static int set_config_idmaps(const char *key, const char *value,
c7e27aaf 1632 struct lxc_conf *lxc_conf, void *data)
f6d3e3e4 1633{
251d0d2a 1634 unsigned long hostid, nsid, range;
f6d3e3e4 1635 char type;
0b843d35 1636 int ret;
34a7a4c6
CB		 1637 struct lxc_list *idmaplist = NULL;
1638 struct id_map *idmap = NULL;
f6d3e3e4 1639
663e9916 1640 if (lxc_config_value_empty(value))
7d0eb87e
SH		 1641 return lxc_clear_idmaps(lxc_conf);
1642
f6d3e3e4
SH		 1643 idmaplist = malloc(sizeof(*idmaplist));
1644 if (!idmaplist)
34a7a4c6 1645 goto on_error;
f6d3e3e4
SH		 1646
1647 idmap = malloc(sizeof(*idmap));
1648 if (!idmap)
34a7a4c6 1649 goto on_error;
f6d3e3e4
SH		 1650 memset(idmap, 0, sizeof(*idmap));
1651
0b843d35 1652 ret = parse_idmaps(value, &type, &nsid, &hostid, &range);
a8b1ac78 1653 if (ret < 0) {
f37d1c22 1654 ERROR("Failed to parse id mappings");
34a7a4c6 1655 goto on_error;
a8b1ac78 1656 }
34a7a4c6 1657
25a908b8 1658 INFO("Read uid map: type %c nsid %lu hostid %lu range %lu", type, nsid, hostid, range);
ac7725e7 1659 if (type == 'u')
f6d3e3e4 1660 idmap->idtype = ID_TYPE_UID;
ac7725e7 1661 else if (type == 'g')
f6d3e3e4
SH		 1662 idmap->idtype = ID_TYPE_GID;
1663 else
34a7a4c6 1664 goto on_error;
7e60c3f0 1665
f6d3e3e4
SH		 1666 idmap->hostid = hostid;
1667 idmap->nsid = nsid;
1668 idmap->range = range;
7e60c3f0
SG		 1669 idmaplist->elem = idmap;
1670 lxc_list_add_tail(&lxc_conf->id_map, idmaplist);
46ad64ab
CB		 1671
1672 if (!lxc_conf->root_nsuid_map && idmap->idtype == ID_TYPE_UID)
1673 if (idmap->nsid == 0)
1674 lxc_conf->root_nsuid_map = idmap;
1675
1676
4160c3a0 1677 if (!lxc_conf->root_nsgid_map && idmap->idtype == ID_TYPE_GID)
46ad64ab
CB		 1678 if (idmap->nsid == 0)
1679 lxc_conf->root_nsgid_map = idmap;
1680
34a7a4c6 1681 idmap = NULL;
7e60c3f0 1682
f6d3e3e4
SH		 1683 return 0;
1684
34a7a4c6 1685on_error:
f10fad2f 1686 free(idmaplist);
34a7a4c6 1687 free(idmap);
f6d3e3e4
SH		 1688
1689 return -1;
1690}
1691
47148e96
CB		 1692static int set_config_mount_fstab(const char *key, const char *value,
1693 struct lxc_conf *lxc_conf, void *data)
d95db067 1694{
663e9916 1695 if (lxc_config_value_empty(value)) {
47148e96 1696 clr_config_mount_fstab(key, lxc_conf, NULL);
d9192f5d 1697 return -1;
46f3de30 1698 }
6f5685f0 1699
713046e3 1700 return set_config_path_item(&lxc_conf->fstab, value);
d95db067
DE		 1701}
1702
713046e3 1703static int set_config_mount_auto(const char *key, const char *value,
c7e27aaf 1704 struct lxc_conf *lxc_conf, void *data)
368bbc02 1705{
62dd965e 1706 char *autos, *token;
368bbc02
CS		 1707 int i;
1708 int ret = -1;
504a2217
CB		 1709 static struct {
1710 const char *token;
1711 int mask;
1712 int flag;
1713 } allowed_auto_mounts[] = {
6812d833
CB		 1714 { "proc", LXC_AUTO_PROC_MASK, LXC_AUTO_PROC_MIXED },
1715 { "proc:mixed", LXC_AUTO_PROC_MASK, LXC_AUTO_PROC_MIXED },
1716 { "proc:rw", LXC_AUTO_PROC_MASK, LXC_AUTO_PROC_RW },
1717 { "sys", LXC_AUTO_SYS_MASK, LXC_AUTO_SYS_MIXED },
1718 { "sys:ro", LXC_AUTO_SYS_MASK, LXC_AUTO_SYS_RO },
1719 { "sys:mixed", LXC_AUTO_SYS_MASK, LXC_AUTO_SYS_MIXED },
1720 { "sys:rw", LXC_AUTO_SYS_MASK, LXC_AUTO_SYS_RW },
1721 { "cgroup", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_NOSPEC },
1722 { "cgroup:mixed", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_MIXED },
1723 { "cgroup:ro", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_RO },
1724 { "cgroup:rw", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_RW },
1725 { "cgroup:force", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_NOSPEC | LXC_AUTO_CGROUP_FORCE },
1726 { "cgroup:mixed:force", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_MIXED | LXC_AUTO_CGROUP_FORCE },
1727 { "cgroup:ro:force", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_RO | LXC_AUTO_CGROUP_FORCE },
1728 { "cgroup:rw:force", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_RW | LXC_AUTO_CGROUP_FORCE },
1729 { "cgroup-full", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_FULL_NOSPEC },
1730 { "cgroup-full:mixed", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_FULL_MIXED },
1731 { "cgroup-full:ro", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_FULL_RO },
1732 { "cgroup-full:rw", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_FULL_RW },
1733 { "cgroup-full:force", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_FULL_NOSPEC | LXC_AUTO_CGROUP_FORCE },
1734 { "cgroup-full:mixed:force", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_FULL_MIXED | LXC_AUTO_CGROUP_FORCE },
1735 { "cgroup-full:ro:force", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_FULL_RO | LXC_AUTO_CGROUP_FORCE },
1736 { "cgroup-full:rw:force", LXC_AUTO_CGROUP_MASK, LXC_AUTO_CGROUP_FULL_RW | LXC_AUTO_CGROUP_FORCE },
adf0ba1f 1737 { "shmounts:", LXC_AUTO_SHMOUNTS_MASK, LXC_AUTO_SHMOUNTS },
25a908b8 1738 /* For adding anything that is just a single on/off, but has no
3f69fb12
SY		 1739 * options: keep mask and flag identical and just define the enum
1740 * value as an unused bit so far
504a2217 1741 */
3f69fb12 1742 { NULL, 0, 0 }
504a2217 1743 };
368bbc02 1744
663e9916 1745 if (lxc_config_value_empty(value)) {
d9192f5d
SH		 1746 lxc_conf->auto_mounts = 0;
1747 return 0;
1748 }
368bbc02
CS		 1749
1750 autos = strdup(value);
25a908b8 1751 if (!autos)
368bbc02 1752 return -1;
368bbc02 1753
62dd965e 1754 lxc_iterate_parts(token, autos, " \t") {
0d190408
LT		 1755 bool is_shmounts = false;
1756
368bbc02
CS		 1757 for (i = 0; allowed_auto_mounts[i].token; i++) {
1758 if (!strcmp(allowed_auto_mounts[i].token, token))
1759 break;
0d190408 1760
fd14fdb8 1761 if (strcmp("shmounts:", allowed_auto_mounts[i].token) == 0 &&
6333c915 1762 strncmp("shmounts:", token, STRLITERALLEN("shmounts:")) == 0) {
0d190408
LT		 1763 is_shmounts = true;
1764 break;
1765 }
368bbc02
CS		 1766 }
1767
1768 if (!allowed_auto_mounts[i].token) {
25a908b8 1769 ERROR("Invalid filesystem to automount \"%s\"", token);
62dd965e 1770 goto on_error;
368bbc02
CS		 1771 }
1772
b06b8511 1773 lxc_conf->auto_mounts &= ~allowed_auto_mounts[i].mask;
368bbc02 1774 lxc_conf->auto_mounts |= allowed_auto_mounts[i].flag;
0d190408 1775 if (is_shmounts) {
6333c915 1776 lxc_conf->shmount.path_host = strdup(token + STRLITERALLEN("shmounts:"));
fd14fdb8
LT		 1777 if (!lxc_conf->shmount.path_host) {
1778 SYSERROR("Failed to copy shmounts host path");
62dd965e 1779 goto on_error;
fd14fdb8
LT		 1780 }
1781
7a41e857 1782 if (strcmp(lxc_conf->shmount.path_host, "") == 0) {
0d190408 1783 ERROR("Invalid shmounts path: empty");
62dd965e 1784 goto on_error;
0d190408 1785 }
fd14fdb8 1786
7a41e857 1787 lxc_conf->shmount.path_cont = strdup("/dev/.lxc-mounts");
fd14fdb8
LT		 1788 if(!lxc_conf->shmount.path_cont) {
1789 SYSERROR("Failed to copy shmounts container path");
62dd965e 1790 goto on_error;
fd14fdb8 1791 }
0d190408 1792 }
d028235d 1793 }
368bbc02 1794
62dd965e
CB		 1795 ret = 0;
1796
1797on_error:
368bbc02 1798 free(autos);
62dd965e 1799
368bbc02
CS		 1800 return ret;
1801}
1802
713046e3 1803static int set_config_mount(const char *key, const char *value,
c7e27aaf 1804 struct lxc_conf *lxc_conf, void *data)
e7938e9e 1805{
e7938e9e
MN		 1806 char *mntelem;
1807 struct lxc_list *mntlist;
1808
663e9916 1809 if (lxc_config_value_empty(value))
d9192f5d 1810 return lxc_clear_mount_entries(lxc_conf);
e7938e9e
MN		 1811
1812 mntlist = malloc(sizeof(*mntlist));
1813 if (!mntlist)
1814 return -1;
1815
1816 mntelem = strdup(value);
00b6be44
SH		 1817 if (!mntelem) {
1818 free(mntlist);
bf83c5b9 1819 return -1;
00b6be44 1820 }
e7938e9e
MN		 1821 mntlist->elem = mntelem;
1822
1823 lxc_list_add_tail(&lxc_conf->mount_list, mntlist);
1824
1825 return 0;
1826}
1827
0d190408
LT		 1828int add_elem_to_mount_list(const char *value, struct lxc_conf *lxc_conf) {
1829 return set_config_mount(NULL, value, lxc_conf, NULL);
1830}
1831
713046e3 1832static int set_config_cap_keep(const char *key, const char *value,
c7e27aaf 1833 struct lxc_conf *lxc_conf, void *data)
1fb86a7c 1834{
62dd965e 1835 char *keepcaps, *token;
1fb86a7c
SH		 1836 struct lxc_list *keeplist;
1837 int ret = -1;
1838
663e9916 1839 if (lxc_config_value_empty(value))
7d0eb87e 1840 return lxc_clear_config_keepcaps(lxc_conf);
1fb86a7c
SH		 1841
1842 keepcaps = strdup(value);
25a908b8 1843 if (!keepcaps)
1fb86a7c 1844 return -1;
1fb86a7c 1845
504a2217
CB		 1846 /* In case several capability keep is specified in a single line
1847 * split these caps in a single element for the list.
1848 */
62dd965e 1849 lxc_iterate_parts(token, keepcaps, " \t") {
7035407c
DE		 1850 if (!strcmp(token, "none"))
1851 lxc_clear_config_keepcaps(lxc_conf);
1852
1fb86a7c 1853 keeplist = malloc(sizeof(*keeplist));
25a908b8 1854 if (!keeplist)
62dd965e 1855 goto on_error;
1fb86a7c
SH		 1856
1857 keeplist->elem = strdup(token);
1858 if (!keeplist->elem) {
1fb86a7c 1859 free(keeplist);
62dd965e 1860 goto on_error;
1fb86a7c
SH		 1861 }
1862
1863 lxc_list_add_tail(&lxc_conf->keepcaps, keeplist);
d028235d 1864 }
1fb86a7c 1865
62dd965e
CB		 1866 ret = 0;
1867
1868on_error:
1fb86a7c
SH		 1869 free(keepcaps);
1870
1871 return ret;
1872}
1873
713046e3 1874static int set_config_cap_drop(const char *key, const char *value,
c7e27aaf 1875 struct lxc_conf *lxc_conf, void *data)
81810dd1 1876{
62dd965e 1877 char *dropcaps, *token;
81810dd1
DL		 1878 struct lxc_list *droplist;
1879 int ret = -1;
1880
663e9916 1881 if (lxc_config_value_empty(value))
7d0eb87e 1882 return lxc_clear_config_caps(lxc_conf);
81810dd1
DL		 1883
1884 dropcaps = strdup(value);
25a908b8 1885 if (!dropcaps)
81810dd1 1886 return -1;
81810dd1 1887
504a2217
CB		 1888 /* In case several capability drop is specified in a single line
1889 * split these caps in a single element for the list.
1890 */
62dd965e 1891 lxc_iterate_parts(token, dropcaps, " \t") {
81810dd1 1892 droplist = malloc(sizeof(*droplist));
25a908b8 1893 if (!droplist)
62dd965e 1894 goto on_error;
81810dd1
DL		 1895
1896 droplist->elem = strdup(token);
1897 if (!droplist->elem) {
81810dd1 1898 free(droplist);
62dd965e 1899 goto on_error;
81810dd1
DL		 1900 }
1901
1902 lxc_list_add_tail(&lxc_conf->caps, droplist);
d028235d 1903 }
81810dd1 1904
62dd965e
CB		 1905 ret = 0;
1906
1907on_error:
81810dd1
DL		 1908 free(dropcaps);
1909
1910 return ret;
1911}
1912
3aed4934
CB		 1913static int set_config_console_path(const char *key, const char *value,
1914 struct lxc_conf *lxc_conf, void *data)
28a4b0e5 1915{
713046e3 1916 return set_config_path_item(&lxc_conf->console.path, value);
28a4b0e5
DL		 1917}
1918
d91adfa6
CB		 1919static int set_config_console_rotate(const char *key, const char *value,
1920 struct lxc_conf *lxc_conf, void *data)
1921{
1922 if (lxc_config_value_empty(value)) {
1923 lxc_conf->console.log_rotate = 0;
1924 return 0;
1925 }
1926
1927 if (lxc_safe_uint(value, &lxc_conf->console.log_rotate) < 0)
1928 return -1;
1929
966b9ecd
CB		 1930 if (lxc_conf->console.log_rotate > 1) {
1931 ERROR("The \"lxc.console.rotate\" config key can only be set "
1932 "to 0 or 1");
d91adfa6 1933 return -1;
966b9ecd 1934 }
d91adfa6
CB		 1935
1936 return 0;
1937}
1938
713046e3 1939static int set_config_console_logfile(const char *key, const char *value,
c7e27aaf 1940 struct lxc_conf *lxc_conf, void *data)
96f15ca1 1941{
713046e3 1942 return set_config_path_item(&lxc_conf->console.log_path, value);
96f15ca1
SH		 1943}
1944
28f3b1cd
CB		 1945static int set_config_console_buffer_size(const char *key, const char *value,
1946 struct lxc_conf *lxc_conf, void *data)
a04220de
CB		 1947{
1948 int ret;
1949 int64_t size;
28f3b1cd 1950 uint64_t buffer_size, pgsz;
a04220de
CB		 1951
1952 if (lxc_config_value_empty(value)) {
28f3b1cd 1953 lxc_conf->console.buffer_size = 0;
a04220de
CB		 1954 return 0;
1955 }
1956
1957 /* If the user specified "auto" the default log size is 2^17 = 128 Kib */
1958 if (!strcmp(value, "auto")) {
28f3b1cd 1959 lxc_conf->console.buffer_size = 1 << 17;
a04220de
CB		 1960 return 0;
1961 }
1962
1963 ret = parse_byte_size_string(value, &size);
1964 if (ret < 0)
1965 return -1;
1966
1967 if (size < 0)
1968 return -EINVAL;
1969
1970 /* must be at least a page size */
1971 pgsz = lxc_getpagesize();
1972 if ((uint64_t)size < pgsz) {
1973 NOTICE("Requested ringbuffer size for the console is %" PRId64
1974 " but must be at least %" PRId64
1975 " bytes. Setting ringbuffer size to %" PRId64 " bytes",
1976 size, pgsz, pgsz);
1977 size = pgsz;
1978 }
1979
28f3b1cd
CB		 1980 buffer_size = lxc_find_next_power2((uint64_t)size);
1981 if (buffer_size == 0)
a04220de
CB		 1982 return -EINVAL;
1983
28f3b1cd 1984 if (buffer_size != size)
a04220de 1985 NOTICE("Passed size was not a power of 2. Rounding log size to "
28f3b1cd 1986 "next power of two: %" PRIu64 " bytes", buffer_size);
a04220de 1987
28f3b1cd 1988 lxc_conf->console.buffer_size = buffer_size;
a04220de
CB		 1989 return 0;
1990}
1991
861813e5
CB		 1992static int set_config_console_size(const char *key, const char *value,
1993 struct lxc_conf *lxc_conf, void *data)
1994{
1995 int ret;
1996 int64_t size;
1997 uint64_t log_size, pgsz;
1998
1999 if (lxc_config_value_empty(value)) {
2000 lxc_conf->console.log_size = 0;
2001 return 0;
2002 }
2003
2004 /* If the user specified "auto" the default log size is 2^17 = 128 Kib */
2005 if (!strcmp(value, "auto")) {
2006 lxc_conf->console.log_size = 1 << 17;
2007 return 0;
2008 }
2009
2010 ret = parse_byte_size_string(value, &size);
2011 if (ret < 0)
2012 return -1;
2013
2014 if (size < 0)
2015 return -EINVAL;
2016
2017 /* must be at least a page size */
2018 pgsz = lxc_getpagesize();
2019 if ((uint64_t)size < pgsz) {
2020 NOTICE("Requested ringbuffer size for the console is %" PRId64
2021 " but must be at least %" PRId64
2022 " bytes. Setting ringbuffer size to %" PRId64 " bytes",
2023 size, pgsz, pgsz);
2024 size = pgsz;
2025 }
2026
2027 log_size = lxc_find_next_power2((uint64_t)size);
2028 if (log_size == 0)
2029 return -EINVAL;
2030
2031 if (log_size != size)
2032 NOTICE("Passed size was not a power of 2. Rounding log size to "
2033 "next power of two: %" PRIu64 " bytes", log_size);
2034
2035 lxc_conf->console.log_size = log_size;
2036 return 0;
2037}
2038
6b0d5538 2039int append_unexp_config_line(const char *line, struct lxc_conf *conf)
f979ac15 2040{
6b0d5538 2041 size_t len = conf->unexpanded_len, linelen = strlen(line);
f979ac15 2042
e6744e9b
SH		 2043 update_hwaddr(line);
2044
6b0d5538 2045 while (conf->unexpanded_alloced <= len + linelen + 2) {
504a2217
CB		 2046 char *tmp = realloc(conf->unexpanded_config,
2047 conf->unexpanded_alloced + 1024);
6b0d5538
SH		 2048 if (!tmp)
2049 return -1;
504a2217 2050
6b0d5538
SH		 2051 if (!conf->unexpanded_config)
2052 *tmp = '\0';
2053 conf->unexpanded_config = tmp;
2054 conf->unexpanded_alloced += 1024;
2055 }
efed99a4 2056
ebcd5140 2057 (void)strlcat(conf->unexpanded_config, line, conf->unexpanded_alloced);
6b0d5538 2058 conf->unexpanded_len += linelen;
504a2217 2059 if (line[linelen - 1] != '\n') {
ebcd5140 2060 (void)strlcat(conf->unexpanded_config, "\n", conf->unexpanded_alloced);
6b0d5538 2061 conf->unexpanded_len++;
f979ac15 2062 }
25a908b8 2063
f979ac15
SH		 2064 return 0;
2065}
2066
e1daebd9
SH		 2067static int do_includedir(const char *dirp, struct lxc_conf *lxc_conf)
2068{
74f96976 2069 struct dirent *direntp;
e1daebd9
SH		 2070 DIR *dir;
2071 char path[MAXPATHLEN];
504a2217
CB		 2072 int len;
2073 int ret = -1;
e1daebd9
SH		 2074
2075 dir = opendir(dirp);
25a908b8 2076 if (!dir)
e1daebd9 2077 return -1;
e1daebd9 2078
74f96976 2079 while ((direntp = readdir(dir))) {
e1daebd9 2080 const char *fnam;
e1daebd9
SH		 2081
2082 fnam = direntp->d_name;
2083 if (!strcmp(fnam, "."))
2084 continue;
2085
2086 if (!strcmp(fnam, ".."))
2087 continue;
2088
2089 len = strlen(fnam);
504a2217 2090 if (len < 6 || strncmp(fnam + len - 5, ".conf", 5) != 0)
e1daebd9 2091 continue;
25a908b8 2092
e1daebd9
SH		 2093 len = snprintf(path, MAXPATHLEN, "%s/%s", dirp, fnam);
2094 if (len < 0 || len >= MAXPATHLEN) {
e1daebd9
SH		 2095 ret = -1;
2096 goto out;
2097 }
2098
2099 ret = lxc_config_read(path, lxc_conf, true);
2100 if (ret < 0)
2101 goto out;
2102 }
2103 ret = 0;
2104
2105out:
25a908b8 2106 closedir(dir);
e1daebd9
SH		 2107
2108 return ret;
2109}
2110
973082f5 2111static int set_config_includefiles(const char *key, const char *value,
c7e27aaf 2112 struct lxc_conf *lxc_conf, void *data)
09ad6246 2113{
663e9916 2114 if (lxc_config_value_empty(value)) {
26471403 2115 clr_config_includefiles(key, lxc_conf, NULL);
616422f1 2116 return 0;
355c5701 2117 }
616422f1 2118
e1daebd9
SH		 2119 if (is_dir(value))
2120 return do_includedir(value, lxc_conf);
2121
6b0d5538 2122 return lxc_config_read(value, lxc_conf, true);
09ad6246
SH		 2123}
2124
7a96a068
CB		 2125static int set_config_rootfs_path(const char *key, const char *value,
2126 struct lxc_conf *lxc_conf, void *data)
c2cc9f0a 2127{
693dbdb9
CB		 2128 int ret;
2129 char *dup, *tmp;
2130 const char *container_path;
2131
2132 if (lxc_config_value_empty(value)) {
2133 free(lxc_conf->rootfs.path);
2134 lxc_conf->rootfs.path = NULL;
2135 return 0;
2136 }
2137
2138 dup = strdup(value);
2139 if (!dup)
2140 return -1;
2141
2142 /* Split <storage type>:<container path> into <storage type> and
2143 * <container path>. Set "rootfs.bdev_type" to <storage type> and
2144 * "rootfs.path" to <container path>.
2145 */
2146 tmp = strchr(dup, ':');
2147 if (tmp) {
2148 *tmp = '\0';
2149 ret = set_config_path_item(&lxc_conf->rootfs.bdev_type, dup);
2150 if (ret < 0) {
2151 free(dup);
2152 return -1;
2153 }
2154 tmp++;
2155 container_path = tmp;
2156 } else {
2157 container_path = value;
2158 }
2159
2160 ret = set_config_path_item(&lxc_conf->rootfs.path, container_path);
2161 free(dup);
2162 return ret;
c2cc9f0a 2163}
2164
6e54330c
CB		 2165static int set_config_rootfs_managed(const char *key, const char *value,
2166 struct lxc_conf *lxc_conf, void *data)
2167{
2168 unsigned int val = 0;
2169
2170 if (lxc_config_value_empty(value)) {
2171 lxc_conf->rootfs.managed = true;
2172 return 0;
2173 }
2174
2175 if (lxc_safe_uint(value, &val) < 0)
2176 return -EINVAL;
2177
2178 switch (val) {
2179 case 0:
2180 lxc_conf->rootfs.managed = false;
2181 return 0;
2182 case 1:
2183 lxc_conf->rootfs.managed = true;
2184 return 0;
2185 }
2186
2187 return -EINVAL;
2188}
2189
713046e3 2190static int set_config_rootfs_mount(const char *key, const char *value,
c7e27aaf 2191 struct lxc_conf *lxc_conf, void *data)
23b7ea69 2192{
713046e3 2193 return set_config_path_item(&lxc_conf->rootfs.mount, value);
23b7ea69
DL		 2194}
2195
713046e3 2196static int set_config_rootfs_options(const char *key, const char *value,
c7e27aaf 2197 struct lxc_conf *lxc_conf, void *data)
a17b1e65 2198{
3437f95c
CB		 2199 int ret;
2200 unsigned long mflags = 0, pflags = 0;
2201 char *mdata = NULL, *opts = NULL;
2202 struct lxc_rootfs *rootfs = &lxc_conf->rootfs;
2203
2204 ret = parse_mntopts(value, &mflags, &mdata);
2205 if (ret < 0)
2206 return -EINVAL;
2207
2208 ret = parse_propagationopts(value, &pflags);
2209 if (ret < 0) {
2210 free(mdata);
2211 return -EINVAL;
2212 }
2213
2214 ret = set_config_string_item(&opts, value);
2215 if (ret < 0) {
2216 free(mdata);
2217 return -ENOMEM;
2218 }
2219
2220 rootfs->mountflags = mflags | pflags;
2221 rootfs->options = opts;
2222 rootfs->data = mdata;
2223
2224 return 0;
a17b1e65
SG		 2225}
2226
b67771bc 2227static int set_config_uts_name(const char *key, const char *value,
c7e27aaf 2228 struct lxc_conf *lxc_conf, void *data)
c2cc9f0a 2229{
2230 struct utsname *utsname;
2231
663e9916 2232 if (lxc_config_value_empty(value)) {
b67771bc 2233 clr_config_uts_name(key, lxc_conf, NULL);
1939e73d 2234 return 0;
00cd8039 2235 }
1939e73d 2236
c2cc9f0a 2237 utsname = malloc(sizeof(*utsname));
25a908b8 2238 if (!utsname)
c2cc9f0a 2239 return -1;
c2cc9f0a 2240
2241 if (strlen(value) >= sizeof(utsname->nodename)) {
b6f24d54 2242 free(utsname);
c2cc9f0a 2243 return -1;
2244 }
2245
43f984ea 2246 (void)strlcpy(utsname->nodename, value, sizeof(utsname->nodename));
f10fad2f 2247 free(lxc_conf->utsname);
c2cc9f0a 2248 lxc_conf->utsname = utsname;
2249
2250 return 0;
2251}
2252
1d8d3676
CB		 2253static int set_config_namespace_clone(const char *key, const char *value,
2254 struct lxc_conf *lxc_conf, void *data)
2255{
62dd965e 2256 char *ns, *token;
1d8d3676 2257 int cloneflag = 0;
1d8d3676
CB		 2258
2259 if (lxc_config_value_empty(value))
2260 return clr_config_namespace_clone(key, lxc_conf, data);
2261
8bc8c715 2262 if (lxc_conf->ns_keep != 0) {
6d1400b5 2263 errno = EINVAL;
2264 SYSERROR("Cannot set both \"lxc.namespace.clone\" and "
2265 "\"lxc.namespace.keep\"");
8bc8c715
CB		 2266 return -EINVAL;
2267 }
2268
1d8d3676
CB		 2269 ns = strdup(value);
2270 if (!ns)
2271 return -1;
1d8d3676 2272
62dd965e 2273 lxc_iterate_parts(token, ns, " \t") {
1d8d3676
CB		 2274 token += lxc_char_left_gc(token, strlen(token));
2275 token[lxc_char_right_gc(token, strlen(token))] = '\0';
2276 cloneflag = lxc_namespace_2_cloneflag(token);
2277 if (cloneflag < 0) {
2278 free(ns);
2279 return -EINVAL;
2280 }
2281 lxc_conf->ns_clone |= cloneflag;
2282 }
2283 free(ns);
2284
2285 return 0;
2286}
2287
abeb5bba
CB		 2288static int set_config_namespace_keep(const char *key, const char *value,
2289 struct lxc_conf *lxc_conf, void *data)
2290{
62dd965e 2291 char *ns, *token;
abeb5bba 2292 int cloneflag = 0;
abeb5bba
CB		 2293
2294 if (lxc_config_value_empty(value))
2295 return clr_config_namespace_keep(key, lxc_conf, data);
2296
8bc8c715 2297 if (lxc_conf->ns_clone != 0) {
6d1400b5 2298 errno = EINVAL;
2299 SYSERROR("Cannot set both \"lxc.namespace.clone\" and "
2300 "\"lxc.namespace.keep\"");
8bc8c715
CB		 2301 return -EINVAL;
2302 }
2303
abeb5bba
CB		 2304 ns = strdup(value);
2305 if (!ns)
2306 return -1;
abeb5bba 2307
62dd965e 2308 lxc_iterate_parts(token, ns, " \t") {
abeb5bba
CB		 2309 token += lxc_char_left_gc(token, strlen(token));
2310 token[lxc_char_right_gc(token, strlen(token))] = '\0';
2311 cloneflag = lxc_namespace_2_cloneflag(token);
2312 if (cloneflag < 0) {
2313 free(ns);
2314 return -EINVAL;
2315 }
2316 lxc_conf->ns_keep |= cloneflag;
2317 }
2318 free(ns);
2319
2320 return 0;
2321}
2322
b074bbf1
CB		 2323static int set_config_namespace_share(const char *key, const char *value,
2324 struct lxc_conf *lxc_conf, void *data)
28d9e29e
CB		 2325{
2326 int ns_idx;
2327 const char *namespace;
2328
2329 if (lxc_config_value_empty(value))
b074bbf1 2330 return clr_config_namespace_share(key, lxc_conf, data);
28d9e29e 2331
6333c915 2332 namespace = key + STRLITERALLEN("lxc.namespace.share.");
28d9e29e
CB		 2333 ns_idx = lxc_namespace_2_ns_idx(namespace);
2334 if (ns_idx < 0)
2335 return ns_idx;
2336
b074bbf1 2337 return set_config_string_item(&lxc_conf->ns_share[ns_idx], value);
28d9e29e
CB		 2338}
2339
6b0d5538
SH		 2340struct parse_line_conf {
2341 struct lxc_conf *conf;
2342 bool from_include;
2343};
4184c3e1 2344
7a7ff0c6 2345static int parse_line(char *buffer, void *data)
c2cc9f0a 2346{
504a2217 2347 char *dot, *key, *line, *linep, *value;
3b13691d
CB		 2348 bool empty_line;
2349 struct lxc_config_t *config;
504a2217 2350 int ret = 0;
3b13691d
CB		 2351 char *dup = buffer;
2352 struct parse_line_conf *plc = data;
c2cc9f0a 2353
3b13691d
CB		 2354 /* If there are newlines in the config file we should keep them. */
2355 empty_line = lxc_is_line_empty(dup);
2356 if (empty_line)
2357 dup = "\n";
c2cc9f0a 2358
25a908b8
CB		 2359 /* We have to dup the buffer otherwise, at the re-exec for reboot we
2360 * modified the original string on the stack by replacing '=' by '\0'
2361 * below.
91480a0f 2362 */
3b13691d 2363 linep = line = strdup(dup);
25a908b8 2364 if (!line)
81192358 2365 return -1;
91480a0f 2366
3b13691d
CB		 2367 if (!plc->from_include) {
2368 ret = append_unexp_config_line(line, plc->conf);
2369 if (ret < 0)
2370 goto on_error;
2371 }
2372
2373 if (empty_line)
327500d4 2374 goto on_error;
6b0d5538 2375
b2718c72 2376 line += lxc_char_left_gc(line, strlen(line));
476d4cf1 2377
4184c3e1
SH		 2378 /* ignore comments */
2379 if (line[0] == '#')
3b13691d 2380 goto on_error;
476d4cf1 2381
6b0d5538
SH		 2382 /* martian option - don't add it to the config itself */
2383 if (strncmp(line, "lxc.", 4))
3b13691d 2384 goto on_error;
4184c3e1 2385
476d4cf1 2386 ret = -1;
c2cc9f0a 2387
3b13691d 2388 dot = strchr(line, '=');
c2cc9f0a 2389 if (!dot) {
3b13691d
CB		 2390 ERROR("Invalid configuration line: %s", line);
2391 goto on_error;
c2cc9f0a 2392 }
a871ff6b 2393
c2cc9f0a 2394 *dot = '\0';
2395 value = dot + 1;
2396
b2718c72 2397 key = line;
2398 key[lxc_char_right_gc(key, strlen(key))] = '\0';
c2cc9f0a 2399
b2718c72 2400 value += lxc_char_left_gc(value, strlen(value));
2401 value[lxc_char_right_gc(value, strlen(value))] = '\0';
c2cc9f0a 2402
bd878dee 2403 if (*value == '\'' || *value == '\"') {
25a908b8
CB		 2404 size_t len;
2405
2406 len = strlen(value);
504a2217
CB		 2407 if (len > 1 && value[len - 1] == *value) {
2408 value[len - 1] = '\0';
bd878dee
SB		 2409 value++;
2410 }
2411 }
2412
300df83e 2413 config = lxc_get_config(key);
c2cc9f0a 2414 if (!config) {
25a908b8 2415 ERROR("Unknown configuration key \"%s\"", key);
3b13691d 2416 goto on_error;
c2cc9f0a 2417 }
2418
bbc079cf 2419 ret = config->set(key, value, plc->conf, NULL);
91480a0f 2420
3b13691d 2421on_error:
81192358 2422 free(linep);
91480a0f 2423 return ret;
c2cc9f0a 2424}
2425
d899f11b 2426static struct new_config_item *parse_new_conf_line(char *buffer)
2427{
2428 char *dot, *key, *line, *linep, *value;
2429 int ret = 0;
2430 char *dup = buffer;
2431 struct new_config_item *new = NULL;
2432
2433 linep = line = strdup(dup);
2434 if (!line)
2435 return NULL;
2436
2437 line += lxc_char_left_gc(line, strlen(line));
2438
2439 /* martian option - don't add it to the config itself */
85d49873 2440 if (strncmp(line, "lxc.", 4))
d899f11b 2441 goto on_error;
2442
2443 ret = -1;
2444 dot = strchr(line, '=');
2445 if (!dot) {
2446 ERROR("Invalid configuration item: %s", line);
2447 goto on_error;
2448 }
2449
2450 *dot = '\0';
2451 value = dot + 1;
2452
2453 key = line;
2454 key[lxc_char_right_gc(key, strlen(key))] = '\0';
2455
2456 value += lxc_char_left_gc(value, strlen(value));
2457 value[lxc_char_right_gc(value, strlen(value))] = '\0';
2458
2459 if (*value == '\'' || *value == '\"') {
2460 size_t len;
2461
2462 len = strlen(value);
2463 if (len > 1 && value[len - 1] == *value) {
2464 value[len - 1] = '\0';
2465 value++;
2466 }
2467 }
2468
2469 ret = -1;
2470 new = malloc(sizeof(struct new_config_item));
2471 if (!new)
2472 goto on_error;
2473
2474 new->key = strdup(key);
2475 new->val = strdup(value);
2476 if (!new->val || !new->key)
2477 goto on_error;
2478
2479 ret = 0;
2480
2481on_error:
2482 free(linep);
2483
2484 if (ret < 0 && new) {
2485 free(new->key);
2486 free(new->val);
2487 free(new);
2488 new = NULL;
2489 }
2490
2491 return new;
2492}
2493
6b0d5538 2494int lxc_config_read(const char *file, struct lxc_conf *conf, bool from_include)
c2cc9f0a 2495{
25a908b8 2496 int ret;
6b0d5538
SH		 2497 struct parse_line_conf c;
2498
2499 c.conf = conf;
2500 c.from_include = from_include;
f979ac15 2501
25a908b8
CB		 2502 ret = access(file, R_OK);
2503 if (ret < 0)
f3ca99fd 2504 return -1;
6b0d5538 2505
25a908b8 2506 /* Catch only the top level config file name in the structure. */
504a2217 2507 if (!conf->rcfile)
76d0127f 2508 conf->rcfile = strdup(file);
f979ac15 2509
9994d140 2510 return lxc_file_for_each_line_mmap(file, parse_line, &c);
c2cc9f0a 2511}
62e46035 2512
504a2217 2513int lxc_config_define_add(struct lxc_list *defines, char *arg)
62e46035
CLG		 2514{
2515 struct lxc_list *dent;
2516
2517 dent = malloc(sizeof(struct lxc_list));
2518 if (!dent)
2519 return -1;
2520
d899f11b 2521 dent->elem = parse_new_conf_line(arg);
2522 if (!dent->elem) {
2523 free(dent);
2524 return -1;
2525 }
2526
62e46035
CLG		 2527 lxc_list_add_tail(defines, dent);
2528 return 0;
2529}
2530
eb0c9382 2531bool lxc_config_define_load(struct lxc_list *defines, struct lxc_container *c)
62e46035 2532{
eb0c9382 2533 struct lxc_list *it;
2534 bool bret = true;
62e46035
CLG		 2535
2536 lxc_list_for_each(it, defines) {
eb0c9382 2537 struct new_config_item *new_item = it->elem;
2538 bret = c->set_config_item(c, new_item->key, new_item->val);
2539 if (!bret)
62e46035
CLG		 2540 break;
2541 }
2542
eb0c9382 2543 lxc_config_define_free(defines);
2544 return bret;
2545}
2546
2547void lxc_config_define_free(struct lxc_list *defines)
2548{
2549 struct lxc_list *it, *next;
2550
9ebb03ad 2551 lxc_list_for_each_safe(it, defines, next) {
eb0c9382 2552 struct new_config_item *new_item = it->elem;
2553 free(new_item->key);
2554 free(new_item->val);
62e46035
CLG		 2555 lxc_list_del(it);
2556 free(it);
2557 }
62e46035 2558}
525f0002
CS		 2559
2560signed long lxc_config_parse_arch(const char *arch)
2561{
504a2217
CB		 2562#if HAVE_SYS_PERSONALITY_H
2563 size_t i;
525f0002
CS		 2564 struct per_name {
2565 char *name;
2566 unsigned long per;
bb8d8207 2567 } pername[] = {
8f3e3c13
CB		 2568 { "arm", PER_LINUX32 },
2569 { "armel", PER_LINUX32 },
2570 { "armhf", PER_LINUX32 },
2571 { "armv7l", PER_LINUX32 },
2572 { "athlon", PER_LINUX32 },
504a2217
CB		 2573 { "i386", PER_LINUX32 },
2574 { "i486", PER_LINUX32 },
2575 { "i586", PER_LINUX32 },
2576 { "i686", PER_LINUX32 },
8f3e3c13 2577 { "linux32", PER_LINUX32 },
504a2217
CB		 2578 { "mips", PER_LINUX32 },
2579 { "mipsel", PER_LINUX32 },
2580 { "ppc", PER_LINUX32 },
504a2217 2581 { "powerpc", PER_LINUX32 },
8f3e3c13 2582 { "x86", PER_LINUX32 },
504a2217 2583 { "amd64", PER_LINUX },
8f3e3c13
CB		 2584 { "arm64", PER_LINUX },
2585 { "linux64", PER_LINUX },
504a2217
CB		 2586 { "mips64", PER_LINUX },
2587 { "mips64el", PER_LINUX },
2588 { "ppc64", PER_LINUX },
504a2217 2589 { "ppc64el", PER_LINUX },
8f3e3c13 2590 { "ppc64le", PER_LINUX },
504a2217
CB		 2591 { "powerpc64", PER_LINUX },
2592 { "s390x", PER_LINUX },
8f3e3c13 2593 { "x86_64", PER_LINUX },
525f0002
CS		 2594 };
2595 size_t len = sizeof(pername) / sizeof(pername[0]);
2596
8f3e3c13 2597 for (i = 0; i < len; i++)
525f0002 2598 if (!strcmp(pername[i].name, arch))
504a2217 2599 return pername[i].per;
504a2217 2600#endif
525f0002
CS		 2601
2602 return -1;
2603}
72d0e1cb 2604
eb0c9382 2605int lxc_fill_elevated_privileges(char *flaglist, int *flags)
2606{
62dd965e 2607 char *token;
eb0c9382 2608 int i, aflag;
2609 struct {
2610 const char *token;
2611 int flag;
2612 } all_privs[] = {
2613 { "CGROUP", LXC_ATTACH_MOVE_TO_CGROUP },
2614 { "CAP", LXC_ATTACH_DROP_CAPABILITIES },
2615 { "LSM", LXC_ATTACH_LSM_EXEC },
2616 { NULL, 0 }
2617 };
2618
2619 if (!flaglist) {
2620 /* For the sake of backward compatibility, drop all privileges
2621 * if none is specified.
2622 */
2623 for (i = 0; all_privs[i].token; i++)
2624 *flags |= all_privs[i].flag;
2625
2626 return 0;
2627 }
2628
62dd965e 2629 lxc_iterate_parts(token, flaglist, "|") {
eb0c9382 2630 aflag = -1;
2631
2632 for (i = 0; all_privs[i].token; i++)
2633 if (!strcmp(all_privs[i].token, token))
2634 aflag = all_privs[i].flag;
2635
2636 if (aflag < 0)
2637 return -1;
2638
2639 *flags |= aflag;
eb0c9382 2640 }
2641
2642 return 0;
2643}
2644
504a2217 2645/* Write out a configuration file. */
0e1a60b0 2646int write_config(int fd, const struct lxc_conf *conf)
72d0e1cb 2647{
6b0d5538 2648 int ret;
0e1a60b0 2649 size_t len = conf->unexpanded_len;
72d0e1cb 2650
0e1a60b0
CB		 2651 if (len == 0)
2652 return 0;
504a2217 2653
0e1a60b0
CB		 2654 ret = lxc_write_nointr(fd, conf->unexpanded_config, len);
2655 if (ret < 0) {
25a908b8 2656 SYSERROR("Failed to write configuration file");
0e1a60b0
CB		 2657 return -1;
2658 }
2659
2660 return 0;
6b0d5538 2661}
f979ac15 2662
504a2217
CB		 2663bool do_append_unexp_config_line(struct lxc_conf *conf, const char *key,
2664 const char *v)
6b0d5538
SH		 2665{
2666 int ret;
151d2da2
CB		 2667 size_t len;
2668 char *tmp;
4184c3e1 2669
151d2da2
CB		 2670 len = strlen(key) + strlen(v) + 4;
2671 tmp = alloca(len);
2672
663e9916 2673 if (lxc_config_value_empty(v))
151d2da2
CB		 2674 ret = snprintf(tmp, len, "%s =", key);
2675 else
2676 ret = snprintf(tmp, len, "%s = %s", key, v);
6b0d5538
SH		 2677 if (ret < 0 || ret >= len)
2678 return false;
2679
2680 /* Save the line verbatim into unexpanded_conf */
2681 if (append_unexp_config_line(tmp, conf))
2682 return false;
2683
2684 return true;
2685}
2686
504a2217
CB		 2687void clear_unexp_config_line(struct lxc_conf *conf, const char *key,
2688 bool rm_subkeys)
6b0d5538 2689{
504a2217
CB		 2690 char *lend;
2691 char *lstart = conf->unexpanded_config;
6b0d5538
SH		 2692
2693 if (!conf->unexpanded_config)
2694 return;
504a2217 2695
6b0d5538
SH		 2696 while (*lstart) {
2697 lend = strchr(lstart, '\n');
2698 char v;
2699 if (!lend)
2700 lend = lstart + strlen(lstart);
2701 else
2702 lend++;
2703 if (strncmp(lstart, key, strlen(key)) != 0) {
2704 lstart = lend;
2705 continue;
5f62730e 2706 }
6b0d5538
SH		 2707 if (!rm_subkeys) {
2708 v = lstart[strlen(key)];
2709 if (!isspace(v) && v != '=') {
2710 lstart = lend;
2711 continue;
2712 }
5f62730e 2713 }
6b0d5538
SH		 2714 conf->unexpanded_len -= (lend - lstart);
2715 if (*lend == '\0') {
2716 *lstart = '\0';
2717 return;
fd986e08 2718 }
504a2217 2719 memmove(lstart, lend, strlen(lend) + 1);
fd986e08 2720 }
6b0d5538
SH		 2721}
2722
329b3625
CB		 2723bool clone_update_unexp_ovl_paths(struct lxc_conf *conf, const char *oldpath,
2724 const char *newpath, const char *oldname,
2725 const char *newname, const char *ovldir)
2726{
329b3625 2727 int ret;
504a2217
CB		 2728 char *lend, *newdir, *olddir, *p, *q;
2729 size_t newdirlen, olddirlen;
329b3625 2730 char *lstart = conf->unexpanded_config;
504a2217 2731 const char *key = "lxc.mount.entry";
329b3625 2732
504a2217
CB		 2733 olddirlen = strlen(ovldir) + strlen(oldpath) + strlen(oldname) + 2;
2734 olddir = alloca(olddirlen + 1);
2735 ret = snprintf(olddir, olddirlen + 1, "%s=%s/%s", ovldir, oldpath,
2736 oldname);
25a908b8 2737 if (ret < 0 || ret >= olddirlen + 1)
329b3625 2738 return false;
504a2217
CB		 2739
2740 newdirlen = strlen(ovldir) + strlen(newpath) + strlen(newname) + 2;
2741 newdir = alloca(newdirlen + 1);
2742 ret = snprintf(newdir, newdirlen + 1, "%s=%s/%s", ovldir, newpath,
2743 newname);
25a908b8 2744 if (ret < 0 || ret >= newdirlen + 1)
329b3625 2745 return false;
504a2217 2746
329b3625
CB		 2747 if (!conf->unexpanded_config)
2748 return true;
504a2217 2749
329b3625
CB		 2750 while (*lstart) {
2751 lend = strchr(lstart, '\n');
2752 if (!lend)
2753 lend = lstart + strlen(lstart);
2754 else
2755 lend++;
504a2217 2756
329b3625 2757 if (strncmp(lstart, key, strlen(key)) != 0)
504a2217
CB		 2758 goto next;
2759
329b3625
CB		 2760 p = strchr(lstart + strlen(key), '=');
2761 if (!p)
504a2217 2762 goto next;
329b3625 2763 p++;
504a2217 2764
329b3625
CB		 2765 while (isblank(*p))
2766 p++;
504a2217 2767
329b3625 2768 if (p >= lend)
504a2217
CB		 2769 goto next;
2770
12e6ab5d
CB		 2771 /* Whenever a lxc.mount.entry entry is found in a line we check
2772 * if the substring "overlay" is present before doing any
2773 * further work. We check for "overlay" because substrings need
2774 * to have at least one space before them in a valid overlay
504a2217
CB		 2775 * lxc.mount.entry (/A B overlay). When the space before is
2776 * missing it is very likely that these substrings are part of a
2777 * path or something else. (Checking q >= lend ensures that we
2778 * only count matches in the current line.) */
12e6ab5d
CB		 2779 q = strstr(p, " overlay");
2780 if (!q || q >= lend)
504a2217
CB		 2781 goto next;
2782
329b3625 2783 if (!(q = strstr(p, olddir)) || (q >= lend))
504a2217 2784 goto next;
329b3625
CB		 2785
2786 /* replace the olddir with newdir */
2787 if (olddirlen >= newdirlen) {
2788 size_t diff = olddirlen - newdirlen;
2789 memcpy(q, newdir, newdirlen);
2790 if (olddirlen != newdirlen) {
2791 memmove(q + newdirlen, q + newdirlen + diff,
2792 strlen(q) - newdirlen - diff + 1);
2793 lend -= diff;
2794 conf->unexpanded_len -= diff;
2795 }
2796 } else {
2797 char *new;
2798 size_t diff = newdirlen - olddirlen;
2799 size_t oldlen = conf->unexpanded_len;
2800 size_t newlen = oldlen + diff;
2801 size_t poffset = q - conf->unexpanded_config;
504a2217 2802
329b3625 2803 new = realloc(conf->unexpanded_config, newlen + 1);
25a908b8 2804 if (!new)
329b3625 2805 return false;
25a908b8 2806
329b3625
CB		 2807 conf->unexpanded_len = newlen;
2808 conf->unexpanded_alloced = newlen + 1;
2809 new[newlen - 1] = '\0';
2810 lend = new + (lend - conf->unexpanded_config);
25a908b8 2811 /* Move over the remainder to make room for the newdir.
504a2217 2812 */
329b3625
CB		 2813 memmove(new + poffset + newdirlen,
2814 new + poffset + olddirlen,
2815 oldlen - poffset - olddirlen + 1);
2816 conf->unexpanded_config = new;
2817 memcpy(new + poffset, newdir, newdirlen);
2818 lend += diff;
2819 }
504a2217
CB		 2820 next:
2821 lstart = lend;
329b3625 2822 }
504a2217 2823
329b3625
CB		 2824 return true;
2825}
2826
67702c21 2827bool clone_update_unexp_hooks(struct lxc_conf *conf, const char *oldpath,
d546aa0e
CB		 2828 const char *newpath, const char *oldname,
2829 const char *newname)
6b0d5538 2830{
67702c21 2831 int ret;
504a2217
CB		 2832 char *lend, *newdir, *olddir, *p;
2833 char *lstart = conf->unexpanded_config;
2834 size_t newdirlen, olddirlen;
2835 const char *key = "lxc.hook";
67702c21 2836
504a2217
CB		 2837 olddirlen = strlen(oldpath) + strlen(oldname) + 1;
2838 olddir = alloca(olddirlen + 1);
d546aa0e 2839 ret = snprintf(olddir, olddirlen + 1, "%s/%s", oldpath, oldname);
25a908b8 2840 if (ret < 0 || ret >= olddirlen + 1)
67702c21 2841 return false;
504a2217
CB		 2842
2843 newdirlen = strlen(newpath) + strlen(newname) + 1;
2844 newdir = alloca(newdirlen + 1);
d546aa0e 2845 ret = snprintf(newdir, newdirlen + 1, "%s/%s", newpath, newname);
25a908b8 2846 if (ret < 0 || ret >= newdirlen + 1)
67702c21 2847 return false;
25a908b8 2848
67702c21
SH		 2849 if (!conf->unexpanded_config)
2850 return true;
25a908b8 2851
67702c21
SH		 2852 while (*lstart) {
2853 lend = strchr(lstart, '\n');
2854 if (!lend)
2855 lend = lstart + strlen(lstart);
2856 else
2857 lend++;
504a2217 2858
d546aa0e 2859 if (strncmp(lstart, key, strlen(key)) != 0)
504a2217
CB		 2860 goto next;
2861
d546aa0e
CB		 2862 p = strchr(lstart + strlen(key), '=');
2863 if (!p)
504a2217 2864 goto next;
67702c21 2865 p++;
504a2217 2866
67702c21
SH		 2867 while (isblank(*p))
2868 p++;
504a2217
CB		 2869
2870 if (p >= lend)
2871 goto next;
2872
d546aa0e 2873 if (strncmp(p, olddir, strlen(olddir)) != 0)
504a2217
CB		 2874 goto next;
2875
67702c21
SH		 2876 /* replace the olddir with newdir */
2877 if (olddirlen >= newdirlen) {
2878 size_t diff = olddirlen - newdirlen;
2879 memcpy(p, newdir, newdirlen);
2880 if (olddirlen != newdirlen) {
d546aa0e
CB		 2881 memmove(p + newdirlen, p + newdirlen + diff,
2882 strlen(p) - newdirlen - diff + 1);
67702c21
SH		 2883 lend -= diff;
2884 conf->unexpanded_len -= diff;
2885 }
67702c21
SH		 2886 } else {
2887 char *new;
2888 size_t diff = newdirlen - olddirlen;
2889 size_t oldlen = conf->unexpanded_len;
2890 size_t newlen = oldlen + diff;
2891 size_t poffset = p - conf->unexpanded_config;
504a2217 2892
d546aa0e 2893 new = realloc(conf->unexpanded_config, newlen + 1);
25a908b8 2894 if (!new)
6b0d5538 2895 return false;
25a908b8 2896
67702c21 2897 conf->unexpanded_len = newlen;
d546aa0e
CB		 2898 conf->unexpanded_alloced = newlen + 1;
2899 new[newlen - 1] = '\0';
67702c21 2900 lend = new + (lend - conf->unexpanded_config);
25a908b8 2901 /* Move over the remainder to make room for the newdir.
504a2217 2902 */
d546aa0e
CB		 2903 memmove(new + poffset + newdirlen,
2904 new + poffset + olddirlen,
2905 oldlen - poffset - olddirlen + 1);
67702c21 2906 conf->unexpanded_config = new;
d546aa0e
CB		 2907 memcpy(new + poffset, newdir, newdirlen);
2908 lend += diff;
fd986e08 2909 }
504a2217
CB		 2910 next:
2911 lstart = lend;
fd986e08 2912 }
504a2217 2913
6b0d5538
SH		 2914 return true;
2915}
2916
504a2217
CB		 2917#define DO(cmd) \
2918 { \
2919 if (!(cmd)) { \
2920 ERROR("Error writing to new config"); \
2921 return false; \
2922 } \
2923 }
6b0d5538 2924
25a908b8
CB		 2925/* This is called only from clone. We wish to update all hwaddrs in the
2926 * unexpanded config file. We can't/don't want to update any which come from
504a2217
CB		 2927 * lxc.includes (there shouldn't be any).
2928 * We can't just walk the c->lxc-conf->network list because that includes netifs
2929 * from the include files. So we update the ones which we find in the unexp
2930 * config file, then find the original macaddr in the conf->network, and update
2931 * that to the same value.
67702c21
SH		 2932 */
2933bool network_new_hwaddrs(struct lxc_conf *conf)
6b0d5538 2934{
504a2217 2935 char *lend, *p, *p2;
6b0d5538 2936 struct lxc_list *it;
504a2217 2937 char *lstart = conf->unexpanded_config;
6b0d5538 2938
67702c21
SH		 2939 if (!conf->unexpanded_config)
2940 return true;
091045f8 2941
67702c21
SH		 2942 while (*lstart) {
2943 char newhwaddr[18], oldhwaddr[17];
091045f8 2944
67702c21
SH		 2945 lend = strchr(lstart, '\n');
2946 if (!lend)
2947 lend = lstart + strlen(lstart);
2948 else
2949 lend++;
091045f8 2950
4a787c27 2951 if (!lxc_config_net_hwaddr(lstart)) {
67702c21
SH		 2952 lstart = lend;
2953 continue;
72d0e1cb 2954 }
091045f8 2955
4a787c27 2956 p = strchr(lstart, '=');
67702c21
SH		 2957 if (!p) {
2958 lstart = lend;
2959 continue;
72d0e1cb 2960 }
091045f8 2961
67702c21
SH		 2962 p++;
2963 while (isblank(*p))
2964 p++;
2965 if (!*p)
2966 return true;
091045f8 2967
67702c21
SH		 2968 p2 = p;
2969 while (*p2 && !isblank(*p2) && *p2 != '\n')
2970 p2++;
504a2217
CB		 2971
2972 if ((p2 - p) != 17) {
67702c21
SH		 2973 WARN("Bad hwaddr entry");
2974 lstart = lend;
2975 continue;
72d0e1cb 2976 }
091045f8 2977
67702c21 2978 memcpy(oldhwaddr, p, 17);
091045f8
CB		 2979
2980 if (!new_hwaddr(newhwaddr))
2981 return false;
2982
67702c21 2983 memcpy(p, newhwaddr, 17);
25a908b8 2984 lxc_list_for_each(it, &conf->network) {
67702c21 2985 struct lxc_netdev *n = it->elem;
25a908b8 2986
67702c21
SH		 2987 if (n->hwaddr && memcmp(oldhwaddr, n->hwaddr, 17) == 0)
2988 memcpy(n->hwaddr, newhwaddr, 17);
72d0e1cb 2989 }
67702c21
SH		 2990
2991 lstart = lend;
72d0e1cb 2992 }
091045f8 2993
6b0d5538 2994 return true;
72d0e1cb 2995}
8796becf 2996
713046e3 2997static int set_config_ephemeral(const char *key, const char *value,
c7e27aaf 2998 struct lxc_conf *lxc_conf, void *data)
8796becf 2999{
663e9916 3000 if (lxc_config_value_empty(value)) {
3c6cf53a 3001 lxc_conf->ephemeral = 0;
78304622 3002 return 0;
3c6cf53a 3003 }
78304622 3004
66ffdb1a
CB		 3005 if (lxc_safe_uint(value, &lxc_conf->ephemeral) < 0)
3006 return -1;
8796becf 3007
25a908b8 3008 if (lxc_conf->ephemeral > 1)
8796becf 3009 return -1;
8796becf
CB		 3010
3011 return 0;
3012}
3013
46cc906d 3014static int set_config_log_syslog(const char *key, const char *value,
c7e27aaf 3015 struct lxc_conf *lxc_conf, void *data)
64c57ea1 3016{
76d0127f 3017 int facility;
7ca56b84 3018
ee10a69c
CB		 3019 if (lxc_conf->syslog) {
3020 free(lxc_conf->syslog);
3021 lxc_conf->syslog = NULL;
3022 }
3023
663e9916 3024 if (lxc_config_value_empty(value))
7ca56b84
CB		 3025 return 0;
3026
76d0127f 3027 facility = lxc_syslog_priority_to_int(value);
25a908b8 3028 if (facility == -EINVAL)
76d0127f 3029 return -1;
64c57ea1 3030
76d0127f 3031 lxc_log_syslog(facility);
713046e3 3032 return set_config_string_item(&lxc_conf->syslog, value);
64c57ea1 3033}
5a46f283 3034
713046e3 3035static int set_config_no_new_privs(const char *key, const char *value,
c7e27aaf 3036 struct lxc_conf *lxc_conf, void *data)
5a46f283 3037{
e8ec7c9e 3038 unsigned int v;
5a46f283 3039
663e9916 3040 if (lxc_config_value_empty(value)) {
cf3f8bf6 3041 lxc_conf->no_new_privs = false;
80926845 3042 return 0;
cf3f8bf6 3043 }
80926845 3044
e8ec7c9e
CB		 3045 if (lxc_safe_uint(value, &v) < 0)
3046 return -1;
3047
25a908b8 3048 if (v > 1)
5a46f283 3049 return -1;
e8ec7c9e 3050
5a46f283
CB		 3051 lxc_conf->no_new_privs = v ? true : false;
3052
3053 return 0;
3054}
7b992a3e
CB		 3055
3056/* Callbacks to get configuration items. */
6bede808 3057static int get_config_personality(const char *key, char *retv, int inlen,
cccd2219 3058 struct lxc_conf *c, void *data)
7b992a3e
CB		 3059{
3060 int fulllen = 0;
3061
3062 if (!retv)
3063 inlen = 0;
3064 else
3065 memset(retv, 0, inlen);
3066
3067#if HAVE_SYS_PERSONALITY_H
3068 int len = 0;
3069
6bede808 3070 switch (c->personality) {
7b992a3e
CB		 3071 case PER_LINUX32:
3072 strprint(retv, inlen, "i686");
3073 break;
3074 case PER_LINUX:
3075 strprint(retv, inlen, "x86_64");
3076 break;
3077 default:
3078 break;
3079 }
3080#endif
3081
3082 return fulllen;
3083}
bdf91ab4 3084
232763d6
CB		 3085static int get_config_pty_max(const char *key, char *retv, int inlen,
3086 struct lxc_conf *c, void *data)
bdf91ab4 3087{
e528c735 3088 return lxc_get_conf_size_t(c, retv, inlen, c->pty_max);
bdf91ab4 3089}
5485782f 3090
fe1c5887
CB		 3091static int get_config_tty_max(const char *key, char *retv, int inlen,
3092 struct lxc_conf *c, void *data)
5485782f 3093{
885766f5 3094 return lxc_get_conf_size_t(c, retv, inlen, c->ttys.max);
5485782f 3095}
8015e018 3096
42e53c29 3097static int get_config_tty_dir(const char *key, char *retv, int inlen,
cccd2219 3098 struct lxc_conf *c, void *data)
8015e018 3099{
885766f5 3100 return lxc_get_conf_str(retv, inlen, c->ttys.dir);
8015e018 3101}
de1ede69 3102
953fe44f
CB		 3103static int get_config_apparmor_profile(const char *key, char *retv, int inlen,
3104 struct lxc_conf *c, void *data)
104c8e6c 3105{
6bede808 3106 return lxc_get_conf_str(retv, inlen, c->lsm_aa_profile);
104c8e6c 3107}
d60d18c6 3108
953fe44f
CB		 3109static int get_config_apparmor_allow_incomplete(const char *key, char *retv,
3110 int inlen, struct lxc_conf *c,
3111 void *data)
d60d18c6 3112{
6bede808
CB		 3113 return lxc_get_conf_int(c, retv, inlen,
3114 c->lsm_aa_allow_incomplete);
d60d18c6 3115}
4203a0b5 3116
1800f924
WB		 3117static int get_config_apparmor_allow_nesting(const char *key, char *retv,
3118 int inlen, struct lxc_conf *c,
3119 void *data)
3120{
3121 return lxc_get_conf_int(c, retv, inlen,
3122 c->lsm_aa_allow_nesting);
3123}
3124
3125static int get_config_apparmor_raw(const char *key, char *retv,
3126 int inlen, struct lxc_conf *c,
3127 void *data)
3128{
3129 int len;
3130 struct lxc_list *it;
3131 int fulllen = 0;
3132
3133 if (!retv)
3134 inlen = 0;
3135 else
3136 memset(retv, 0, inlen);
3137
3138 lxc_list_for_each(it, &c->lsm_aa_raw) {
3139 strprint(retv, inlen, "%s\n", (char *)it->elem);
3140 }
3141
3142 return fulllen;
3143}
3144
953fe44f
CB		 3145static int get_config_selinux_context(const char *key, char *retv, int inlen,
3146 struct lxc_conf *c, void *data)
4203a0b5 3147{
6bede808 3148 return lxc_get_conf_str(retv, inlen, c->lsm_se_context);
4203a0b5 3149}
b863bf92 3150
25a908b8
CB		 3151/* If you ask for a specific cgroup value, i.e. lxc.cgroup.devices.list, then
3152 * just the value(s) will be printed. Since there still could be more than one,
3153 * it is newline-separated.
3154 * (Maybe that's ambigous, since some values, i.e. devices.list, will already
3155 * have newlines?)
3156 * If you ask for 'lxc.cgroup", then all cgroup entries will be printed, in
3157 * 'lxc.cgroup.subsystem.key = value' format.
b863bf92 3158 */
54860ed0
CB		 3159static int __get_config_cgroup_controller(const char *key, char *retv,
3160 int inlen, struct lxc_conf *c,
3161 int version)
b863bf92 3162{
b863bf92 3163 int len;
54860ed0
CB		 3164 size_t namespaced_token_len;
3165 char *global_token, *namespaced_token;
3166 struct lxc_list *it;
b863bf92
CB		 3167 int fulllen = 0;
3168 bool get_all = false;
3169
3170 if (!retv)
3171 inlen = 0;
3172 else
3173 memset(retv, 0, inlen);
3174
54860ed0
CB		 3175 if (version == CGROUP2_SUPER_MAGIC) {
3176 global_token = "lxc.cgroup2";
3177 namespaced_token = "lxc.cgroup2.";
6333c915 3178 namespaced_token_len = STRLITERALLEN("lxc.cgroup2.");
54860ed0
CB		 3179 } else if (version == CGROUP_SUPER_MAGIC) {
3180 global_token = "lxc.cgroup";
3181 namespaced_token = "lxc.cgroup.";
6333c915 3182 namespaced_token_len = STRLITERALLEN("lxc.cgroup.");
54860ed0
CB		 3183 } else {
3184 return -1;
3185 }
3186
3187 if (strcmp(key, global_token) == 0)
b863bf92 3188 get_all = true;
54860ed0
CB		 3189 else if (strncmp(key, namespaced_token, namespaced_token_len) == 0)
3190 key += namespaced_token_len;
b863bf92
CB		 3191 else
3192 return -1;
3193
6bede808 3194 lxc_list_for_each(it, &c->cgroup) {
b863bf92 3195 struct lxc_cgroup *cg = it->elem;
25a908b8 3196
b863bf92 3197 if (get_all) {
54860ed0
CB		 3198 if (version != cg->version)
3199 continue;
3200
3201 strprint(retv, inlen, "%s.%s = %s\n",
3202 global_token, cg->subsystem, cg->value);
b863bf92
CB		 3203 } else if (!strcmp(cg->subsystem, key)) {
3204 strprint(retv, inlen, "%s\n", cg->value);
3205 }
3206 }
3207
3208 return fulllen;
3209}
5014ff2e 3210
54860ed0
CB		 3211static int get_config_cgroup_controller(const char *key, char *retv, int inlen,
3212 struct lxc_conf *c, void *data)
3213{
3214 return __get_config_cgroup_controller(key, retv, inlen, c,
3215 CGROUP_SUPER_MAGIC);
3216}
3217
3218static int get_config_cgroup2_controller(const char *key, char *retv, int inlen,
3219 struct lxc_conf *c, void *data)
3220{
3221 return __get_config_cgroup_controller(key, retv, inlen, c,
3222 CGROUP2_SUPER_MAGIC);
3223}
3224
43654d34
CB		 3225static int get_config_cgroup_dir(const char *key, char *retv, int inlen,
3226 struct lxc_conf *lxc_conf, void *data)
3227{
3228 int len;
3229 int fulllen = 0;
3230
3231 if (!retv)
3232 inlen = 0;
3233 else
3234 memset(retv, 0, inlen);
3235
3236 strprint(retv, inlen, "%s", lxc_conf->cgroup_meta.dir);
3237
3238 return fulllen;
3239}
3240
9caee129
CB		 3241static inline int get_config_cgroup_relative(const char *key, char *retv,
3242 int inlen, struct lxc_conf *lxc_conf,
3243 void *data)
76f0e2e7
CB		 3244{
3245 return lxc_get_conf_int(lxc_conf, retv, inlen,
9caee129 3246 lxc_conf->cgroup_meta.relative);
76f0e2e7
CB		 3247}
3248
6bede808 3249static int get_config_idmaps(const char *key, char *retv, int inlen,
cccd2219 3250 struct lxc_conf *c, void *data)
5014ff2e
CB		 3251{
3252 struct lxc_list *it;
3253 int len, listlen, ret;
3254 int fulllen = 0;
3255/* "u 1000 1000000 65536"
3256 *
3257 * let's render this as
3258 *
3259 * sizeof(char)
3260 * +
3261 * sizeof(" ")
3262 * +
c77aee64 3263 * sizeof(uint32_t)
5014ff2e
CB		 3264 * +
3265 * sizeof(" ")
3266 * +
c77aee64 3267 * sizeof(uint32_t)
5014ff2e
CB		 3268 * +
3269 * sizeof(" ")
3270 * +
c77aee64 3271 * sizeof(uint32_t)
5014ff2e
CB		 3272 * +
3273 * \0
3274 */
c77aee64 3275#define __LXC_IDMAP_STR_BUF (3 * INTTYPE_TO_STRLEN(uint32_t) + 3 + 1 + 1)
5014ff2e
CB		 3276 char buf[__LXC_IDMAP_STR_BUF];
3277
3278 if (!retv)
3279 inlen = 0;
3280 else
3281 memset(retv, 0, inlen);
3282
6bede808 3283 listlen = lxc_list_len(&c->id_map);
c77aee64 3284 lxc_list_for_each(it, &c->id_map) {
5014ff2e
CB		 3285 struct id_map *map = it->elem;
3286 ret = snprintf(buf, __LXC_IDMAP_STR_BUF, "%c %lu %lu %lu",
3287 (map->idtype == ID_TYPE_UID) ? 'u' : 'g',
3288 map->nsid, map->hostid, map->range);
3289 if (ret < 0 || ret >= __LXC_IDMAP_STR_BUF)
3290 return -1;
3291
3292 strprint(retv, inlen, "%s%s", buf, (listlen-- > 1) ? "\n" : "");
3293 }
3294 return fulllen;
3295}
b29b29be 3296
46cc906d 3297static int get_config_log_level(const char *key, char *retv, int inlen,
cccd2219 3298 struct lxc_conf *c, void *data)
b29b29be
CB		 3299{
3300 const char *v;
6bede808 3301 v = lxc_log_priority_to_string(c->loglevel);
b29b29be
CB		 3302 return lxc_get_conf_str(retv, inlen, v);
3303}
3d4630ab 3304
46cc906d 3305static int get_config_log_file(const char *key, char *retv, int inlen,
cccd2219 3306 struct lxc_conf *c, void *data)
3d4630ab 3307{
6bede808 3308 return lxc_get_conf_str(retv, inlen, c->logfile);
3d4630ab 3309}
0d601acb 3310
47148e96
CB		 3311static int get_config_mount_fstab(const char *key, char *retv, int inlen,
3312 struct lxc_conf *c, void *data)
0d601acb 3313{
6bede808 3314 return lxc_get_conf_str(retv, inlen, c->fstab);
0d601acb 3315}
43fbf8d9 3316
6bede808 3317static int get_config_mount_auto(const char *key, char *retv, int inlen,
cccd2219 3318 struct lxc_conf *c, void *data)
43fbf8d9
CB		 3319{
3320 int len, fulllen = 0;
3321 const char *sep = "";
3322
3323 if (!retv)
3324 inlen = 0;
3325 else
3326 memset(retv, 0, inlen);
3327
6bede808 3328 if (!(c->auto_mounts & LXC_AUTO_ALL_MASK))
43fbf8d9
CB		 3329 return 0;
3330
6bede808 3331 switch (c->auto_mounts & LXC_AUTO_PROC_MASK) {
43fbf8d9
CB		 3332 case LXC_AUTO_PROC_MIXED:
3333 strprint(retv, inlen, "%sproc:mixed", sep);
3334 sep = " ";
3335 break;
3336 case LXC_AUTO_PROC_RW:
3337 strprint(retv, inlen, "%sproc:rw", sep);
3338 sep = " ";
3339 break;
3340 default:
3341 break;
3342 }
3343
6bede808 3344 switch (c->auto_mounts & LXC_AUTO_SYS_MASK) {
43fbf8d9
CB		 3345 case LXC_AUTO_SYS_RO:
3346 strprint(retv, inlen, "%ssys:ro", sep);
3347 sep = " ";
3348 break;
3349 case LXC_AUTO_SYS_RW:
3350 strprint(retv, inlen, "%ssys:rw", sep);
3351 sep = " ";
3352 break;
3353 case LXC_AUTO_SYS_MIXED:
3354 strprint(retv, inlen, "%ssys:mixed", sep);
3355 sep = " ";
3356 break;
3357 default:
3358 break;
3359 }
3360
6bede808 3361 switch (c->auto_mounts & LXC_AUTO_CGROUP_MASK) {
43fbf8d9
CB		 3362 case LXC_AUTO_CGROUP_NOSPEC:
3363 strprint(retv, inlen, "%scgroup", sep);
43fbf8d9
CB		 3364 break;
3365 case LXC_AUTO_CGROUP_MIXED:
3366 strprint(retv, inlen, "%scgroup:mixed", sep);
43fbf8d9
CB		 3367 break;
3368 case LXC_AUTO_CGROUP_RO:
3369 strprint(retv, inlen, "%scgroup:ro", sep);
43fbf8d9
CB		 3370 break;
3371 case LXC_AUTO_CGROUP_RW:
3372 strprint(retv, inlen, "%scgroup:rw", sep);
43fbf8d9
CB		 3373 break;
3374 case LXC_AUTO_CGROUP_FULL_NOSPEC:
3375 strprint(retv, inlen, "%scgroup-full", sep);
43fbf8d9
CB		 3376 break;
3377 case LXC_AUTO_CGROUP_FULL_MIXED:
3378 strprint(retv, inlen, "%scgroup-full:mixed", sep);
43fbf8d9
CB		 3379 break;
3380 case LXC_AUTO_CGROUP_FULL_RO:
3381 strprint(retv, inlen, "%scgroup-full:ro", sep);
43fbf8d9
CB		 3382 break;
3383 case LXC_AUTO_CGROUP_FULL_RW:
3384 strprint(retv, inlen, "%scgroup-full:rw", sep);
43fbf8d9
CB		 3385 break;
3386 default:
3387 break;
3388 }
3389
3390 return fulllen;
3391}
cc921848 3392
6bede808 3393static int get_config_mount(const char *key, char *retv, int inlen,
cccd2219 3394 struct lxc_conf *c, void *data)
cc921848
CB		 3395{
3396 int len, fulllen = 0;
3397 struct lxc_list *it;
3398
3399 if (!retv)
3400 inlen = 0;
3401 else
3402 memset(retv, 0, inlen);
3403
25a908b8 3404 lxc_list_for_each(it, &c->mount_list) {
cc921848
CB		 3405 strprint(retv, inlen, "%s\n", (char *)it->elem);
3406 }
3407
3408 return fulllen;
3409}
819114b6 3410
7a96a068
CB		 3411static int get_config_rootfs_path(const char *key, char *retv, int inlen,
3412 struct lxc_conf *c, void *data)
819114b6 3413{
6bede808 3414 return lxc_get_conf_str(retv, inlen, c->rootfs.path);
819114b6 3415}
3af60359 3416
6e54330c
CB		 3417static int get_config_rootfs_managed(const char *key, char *retv, int inlen,
3418 struct lxc_conf *c, void *data)
3419{
3420 return lxc_get_conf_bool(c, retv, inlen, c->rootfs.managed);
3421}
3422
6bede808 3423static int get_config_rootfs_mount(const char *key, char *retv, int inlen,
cccd2219 3424 struct lxc_conf *c, void *data)
3af60359 3425{
6bede808 3426 return lxc_get_conf_str(retv, inlen, c->rootfs.mount);
3af60359 3427}
0e9db631 3428
6bede808 3429static int get_config_rootfs_options(const char *key, char *retv, int inlen,
cccd2219 3430 struct lxc_conf *c, void *data)
0e9db631 3431{
6bede808 3432 return lxc_get_conf_str(retv, inlen, c->rootfs.options);
0e9db631 3433}
8f183f38 3434
b67771bc 3435static int get_config_uts_name(const char *key, char *retv, int inlen,
cccd2219 3436 struct lxc_conf *c, void *data)
e274f8b0
CB		 3437{
3438 return lxc_get_conf_str(
3439 retv, inlen,
6bede808 3440 c->utsname ? c->utsname->nodename : NULL);
e274f8b0 3441}
466c2e93 3442
6bede808 3443static int get_config_hooks(const char *key, char *retv, int inlen,
cccd2219 3444 struct lxc_conf *c, void *data)
466c2e93
CB		 3445{
3446 char *subkey;
3447 int len, fulllen = 0, found = -1;
3448 struct lxc_list *it;
3449 int i;
3450
466c2e93
CB		 3451 subkey = strchr(key, '.');
3452 if (subkey)
3453 subkey = strchr(subkey + 1, '.');
3454 if (!subkey)
3455 return -1;
3456 subkey++;
3457 if (!*subkey)
3458 return -1;
3459 for (i = 0; i < NUM_LXC_HOOKS; i++) {
3460 if (strcmp(lxchook_names[i], subkey) == 0) {
3461 found = i;
3462 break;
3463 }
3464 }
3465 if (found == -1)
3466 return -1;
3467
3468 if (!retv)
3469 inlen = 0;
3470 else
3471 memset(retv, 0, inlen);
3472
6bede808 3473 lxc_list_for_each(it, &c->hooks[found]) {
466c2e93
CB		 3474 strprint(retv, inlen, "%s\n", (char *)it->elem);
3475 }
3476 return fulllen;
3477}
d2ceff53 3478
44ae0fb6
CB		 3479static int get_config_hooks_version(const char *key, char *retv, int inlen,
3480 struct lxc_conf *c, void *data)
3481{
3482 return lxc_get_conf_int(c, retv, inlen, c->hooks_version);
3483}
3484
f9373e40
CB		 3485static int get_config_net(const char *key, char *retv, int inlen,
3486 struct lxc_conf *c, void *data)
d2ceff53
CB		 3487{
3488 int len, fulllen = 0;
3489 struct lxc_list *it;
3490
3491 if (!retv)
3492 inlen = 0;
3493 else
3494 memset(retv, 0, inlen);
3495
6bede808 3496 lxc_list_for_each(it, &c->network) {
d2ceff53
CB		 3497 struct lxc_netdev *n = it->elem;
3498 const char *t = lxc_net_type_to_str(n->type);
3499 strprint(retv, inlen, "%s\n", t ? t : "(invalid)");
3500 }
3501
3502 return fulllen;
3503}
bdccff60 3504
6bede808 3505static int get_config_cap_drop(const char *key, char *retv, int inlen,
cccd2219 3506 struct lxc_conf *c, void *data)
1c96d6d8
CB		 3507{
3508 int len, fulllen = 0;
3509 struct lxc_list *it;
3510
3511 if (!retv)
3512 inlen = 0;
3513 else
3514 memset(retv, 0, inlen);
3515
6bede808 3516 lxc_list_for_each(it, &c->caps) {
b80927f2
CB		 3517 strprint(retv, inlen, "%s\n", (char *)it->elem);
3518 }
25a908b8 3519
b80927f2
CB		 3520 return fulllen;
3521}
3522
6bede808 3523static int get_config_cap_keep(const char *key, char *retv, int inlen,
cccd2219 3524 struct lxc_conf *c, void *data)
b80927f2
CB		 3525{
3526 int len, fulllen = 0;
3527 struct lxc_list *it;
3528
3529 if (!retv)
3530 inlen = 0;
3531 else
3532 memset(retv, 0, inlen);
3533
6bede808 3534 lxc_list_for_each(it, &c->keepcaps) {
1c96d6d8
CB		 3535 strprint(retv, inlen, "%s\n", (char *)it->elem);
3536 }
25a908b8 3537
1c96d6d8
CB		 3538 return fulllen;
3539}
0692663a 3540
3aed4934
CB		 3541static int get_config_console_path(const char *key, char *retv, int inlen,
3542 struct lxc_conf *c, void *data)
0692663a 3543{
6bede808 3544 return lxc_get_conf_str(retv, inlen, c->console.path);
0692663a 3545}
794d1c06 3546
6bede808 3547static int get_config_console_logfile(const char *key, char *retv, int inlen,
cccd2219 3548 struct lxc_conf *c, void *data)
794d1c06 3549{
6bede808 3550 return lxc_get_conf_str(retv, inlen, c->console.log_path);
794d1c06 3551}
75f55b1f 3552
d91adfa6
CB		 3553static int get_config_console_rotate(const char *key, char *retv, int inlen,
3554 struct lxc_conf *c, void *data)
3555{
3556 return lxc_get_conf_int(c, retv, inlen, c->console.log_rotate);
3557}
3558
3559
28f3b1cd
CB		 3560static int get_config_console_buffer_size(const char *key, char *retv,
3561 int inlen, struct lxc_conf *c,
3562 void *data)
a04220de 3563{
dcea90a0 3564 return lxc_get_conf_uint64(c, retv, inlen, c->console.buffer_size);
a04220de
CB		 3565}
3566
861813e5
CB		 3567static int get_config_console_size(const char *key, char *retv, int inlen,
3568 struct lxc_conf *c, void *data)
3569{
3570 return lxc_get_conf_uint64(c, retv, inlen, c->console.log_size);
3571}
3572
3573
0b427da0
CB		 3574static int get_config_seccomp_profile(const char *key, char *retv, int inlen,
3575 struct lxc_conf *c, void *data)
75f55b1f 3576{
6bede808 3577 return lxc_get_conf_str(retv, inlen, c->seccomp);
75f55b1f 3578}
97f6dad0 3579
6bede808 3580static int get_config_autodev(const char *key, char *retv, int inlen,
cccd2219 3581 struct lxc_conf *c, void *data)
97f6dad0 3582{
6bede808 3583 return lxc_get_conf_int(c, retv, inlen, c->autodev);
97f6dad0 3584}
afee4324 3585
55c84efc 3586static int get_config_signal_halt(const char *key, char *retv, int inlen,
25a908b8 3587 struct lxc_conf *c, void *data)
afee4324 3588{
6bede808 3589 return lxc_get_conf_int(c, retv, inlen, c->haltsignal);
afee4324 3590}
3aa8f359 3591
55c84efc 3592static int get_config_signal_reboot(const char *key, char *retv, int inlen,
25a908b8 3593 struct lxc_conf *c, void *data)
3aa8f359 3594{
6bede808 3595 return lxc_get_conf_int(c, retv, inlen, c->rebootsignal);
3aa8f359 3596}
2e16269f 3597
55c84efc 3598static int get_config_signal_stop(const char *key, char *retv, int inlen,
25a908b8 3599 struct lxc_conf *c, void *data)
2e16269f 3600{
6bede808 3601 return lxc_get_conf_int(c, retv, inlen, c->stopsignal);
2e16269f 3602}
54345299 3603
6bede808 3604static int get_config_start(const char *key, char *retv, int inlen,
cccd2219 3605 struct lxc_conf *c, void *data)
54345299 3606{
c6182222 3607 if (strcmp(key + 10, "auto") == 0)
6bede808 3608 return lxc_get_conf_int(c, retv, inlen, c->start_auto);
c6182222 3609 else if (strcmp(key + 10, "delay") == 0)
6bede808 3610 return lxc_get_conf_int(c, retv, inlen, c->start_delay);
c6182222 3611 else if (strcmp(key + 10, "order") == 0)
6bede808 3612 return lxc_get_conf_int(c, retv, inlen, c->start_order);
54345299
CB		 3613
3614 return -1;
3615}
de9df15e 3616
46cc906d 3617static int get_config_log_syslog(const char *key, char *retv, int inlen,
25a908b8 3618 struct lxc_conf *c, void *data)
de9df15e 3619{
6bede808 3620 return lxc_get_conf_str(retv, inlen, c->syslog);
de9df15e 3621}
ac0f949c 3622
6bede808 3623static int get_config_monitor(const char *key, char *retv, int inlen,
cccd2219 3624 struct lxc_conf *c, void *data)
ac0f949c 3625{
6bede808 3626 return lxc_get_conf_int(c, retv, inlen, c->monitor_unshare);
ac0f949c 3627}
90ec7b6e 3628
258f8051
CB		 3629static int get_config_monitor_signal_pdeath(const char *key, char *retv,
3630 int inlen, struct lxc_conf *c,
3631 void *data)
3632{
3633 return lxc_get_conf_int(c, retv, inlen, c->monitor_signal_pdeath);
3634}
3635
6bede808 3636static int get_config_group(const char *key, char *retv, int inlen,
cccd2219 3637 struct lxc_conf *c, void *data)
90ec7b6e
CB		 3638{
3639 int len, fulllen = 0;
3640 struct lxc_list *it;
3641
3642 if (!retv)
3643 inlen = 0;
3644 else
3645 memset(retv, 0, inlen);
3646
6bede808 3647 lxc_list_for_each(it, &c->groups) {
90ec7b6e
CB		 3648 strprint(retv, inlen, "%s\n", (char *)it->elem);
3649 }
25a908b8 3650
90ec7b6e
CB		 3651 return fulllen;
3652}
aa0db7d3 3653
6bede808 3654static int get_config_environment(const char *key, char *retv, int inlen,
cccd2219 3655 struct lxc_conf *c, void *data)
aa0db7d3
CB		 3656{
3657 int len, fulllen = 0;
3658 struct lxc_list *it;
3659
3660 if (!retv)
3661 inlen = 0;
3662 else
3663 memset(retv, 0, inlen);
3664
6bede808 3665 lxc_list_for_each(it, &c->environment) {
aa0db7d3
CB		 3666 strprint(retv, inlen, "%s\n", (char *)it->elem);
3667 }
25a908b8 3668
aa0db7d3
CB		 3669 return fulllen;
3670}
96dfcb7d 3671
5cda27c1
SH		 3672static int get_config_execute_cmd(const char *key, char *retv, int inlen,
3673 struct lxc_conf *c, void *data)
3674{
3675 return lxc_get_conf_str(retv, inlen, c->execute_cmd);
3676}
3677
6bede808 3678static int get_config_init_cmd(const char *key, char *retv, int inlen,
cccd2219 3679 struct lxc_conf *c, void *data)
96dfcb7d 3680{
6bede808 3681 return lxc_get_conf_str(retv, inlen, c->init_cmd);
96dfcb7d 3682}
1398e9b1 3683
3c491553
L		 3684static int get_config_init_cwd(const char *key, char *retv, int inlen,
3685 struct lxc_conf *c, void *data)
3686{
3687 return lxc_get_conf_str(retv, inlen, c->init_cwd);
3688}
3689
6bede808 3690static int get_config_init_uid(const char *key, char *retv, int inlen,
cccd2219 3691 struct lxc_conf *c, void *data)
1398e9b1 3692{
6bede808 3693 return lxc_get_conf_int(c, retv, inlen, c->init_uid);
1398e9b1 3694}
dfeb7e42 3695
6bede808 3696static int get_config_init_gid(const char *key, char *retv, int inlen,
cccd2219 3697 struct lxc_conf *c, void *data)
dfeb7e42 3698{
6bede808 3699 return lxc_get_conf_int(c, retv, inlen, c->init_gid);
dfeb7e42 3700}
62048afe 3701
6bede808 3702static int get_config_ephemeral(const char *key, char *retv, int inlen,
cccd2219 3703 struct lxc_conf *c, void *data)
62048afe 3704{
6bede808 3705 return lxc_get_conf_int(c, retv, inlen, c->ephemeral);
62048afe 3706}
b09521ac 3707
6bede808 3708static int get_config_no_new_privs(const char *key, char *retv, int inlen,
cccd2219 3709 struct lxc_conf *c, void *data)
b09521ac 3710{
6bede808 3711 return lxc_get_conf_int(c, retv, inlen, c->no_new_privs);
b09521ac 3712}
389f6466 3713
25a908b8 3714/* If you ask for a specific value, i.e. lxc.prlimit.nofile, then just the value
240d4b74 3715 * will be printed. If you ask for 'lxc.prlimit', then all limit entries will be
3716 * printed, in 'lxc.prlimit.resource = value' format.
389f6466 3717 */
240d4b74 3718static int get_config_prlimit(const char *key, char *retv, int inlen,
cccd2219 3719 struct lxc_conf *c, void *data)
389f6466
CB		 3720{
3721 int fulllen = 0, len;
3722 bool get_all = false;
3723 struct lxc_list *it;
3724
3725 if (!retv)
3726 inlen = 0;
3727 else
3728 memset(retv, 0, inlen);
3729
240d4b74 3730 if (!strcmp(key, "lxc.prlimit"))
389f6466 3731 get_all = true;
240d4b74 3732 else if (strncmp(key, "lxc.prlimit.", 12) == 0)
3733 key += 12;
389f6466
CB		 3734 else
3735 return -1;
3736
6bede808 3737 lxc_list_for_each(it, &c->limits) {
c77aee64
CB		 3738 /* 2 colon separated 64 bit integers or the word 'unlimited' */
3739 char buf[INTTYPE_TO_STRLEN(uint64_t) * 2 + 2];
389f6466
CB		 3740 int partlen;
3741 struct lxc_limit *lim = it->elem;
3742
3743 if (lim->limit.rlim_cur == RLIM_INFINITY) {
6333c915
CB		 3744 memcpy(buf, "unlimited", STRLITERALLEN("unlimited") + 1);
3745 partlen = STRLITERALLEN("unlimited");
389f6466
CB		 3746 } else {
3747 partlen = sprintf(buf, "%" PRIu64,
3748 (uint64_t)lim->limit.rlim_cur);
3749 }
3750 if (lim->limit.rlim_cur != lim->limit.rlim_max) {
25a908b8 3751 if (lim->limit.rlim_max == RLIM_INFINITY)
389f6466 3752 memcpy(buf + partlen, ":unlimited",
6333c915 3753 STRLITERALLEN(":unlimited") + 1);
25a908b8 3754 else
389f6466
CB		 3755 sprintf(buf + partlen, ":%" PRIu64,
3756 (uint64_t)lim->limit.rlim_max);
389f6466
CB		 3757 }
3758
3759 if (get_all) {
240d4b74 3760 strprint(retv, inlen, "lxc.prlimit.%s = %s\n",
389f6466 3761 lim->resource, buf);
25a908b8 3762 } else if (!strcmp(lim->resource, key)) {
389f6466
CB		 3763 strprint(retv, inlen, "%s", buf);
3764 }
3765 }
3766
3767 return fulllen;
3768}
e08cb901 3769
e409b214
CB		 3770/* If you ask for a specific value, i.e. lxc.sysctl.net.ipv4.ip_forward, then
3771 * just the value will be printed. If you ask for 'lxc.sysctl', then all sysctl
3772 * entries will be printed, in 'lxc.sysctl.key = value' format.
7edd0540
L		 3773 */
3774static int get_config_sysctl(const char *key, char *retv, int inlen,
3775 struct lxc_conf *c, void *data)
3776{
3777 int len;
3778 struct lxc_list *it;
3779 int fulllen = 0;
3780 bool get_all = false;
3781
3782 if (!retv)
3783 inlen = 0;
3784 else
3785 memset(retv, 0, inlen);
3786
3787 if (strcmp(key, "lxc.sysctl") == 0)
3788 get_all = true;
6333c915
CB		 3789 else if (strncmp(key, "lxc.sysctl.", STRLITERALLEN("lxc.sysctl.")) == 0)
3790 key += STRLITERALLEN("lxc.sysctl.");
7edd0540
L		 3791 else
3792 return -1;
3793
3794 lxc_list_for_each(it, &c->sysctls) {
3795 struct lxc_sysctl *elem = it->elem;
3796 if (get_all) {
3797 strprint(retv, inlen, "lxc.sysctl.%s = %s\n",
3798 elem->key, elem->value);
3799 } else if (strcmp(elem->key, key) == 0) {
3800 strprint(retv, inlen, "%s", elem->value);
3801 }
3802 }
3803
3804 return fulllen;
3805}
3806
61d7a733
YT		 3807static int get_config_proc(const char *key, char *retv, int inlen,
3808 struct lxc_conf *c, void *data)
3809{
3810 struct lxc_list *it;
3811 int len;
3812 int fulllen = 0;
3813 bool get_all = false;
3814
3815 if (!retv)
3816 inlen = 0;
3817 else
3818 memset(retv, 0, inlen);
3819
3820 if (strcmp(key, "lxc.proc") == 0)
3821 get_all = true;
6333c915
CB		 3822 else if (strncmp(key, "lxc.proc.", STRLITERALLEN("lxc.proc.")) == 0)
3823 key += STRLITERALLEN("lxc.proc.");
61d7a733
YT		 3824 else
3825 return -1;
3826
3827 lxc_list_for_each(it, &c->procs) {
3828 struct lxc_proc *proc = it->elem;
3829
3830 if (get_all) {
3831 strprint(retv, inlen, "lxc.proc.%s = %s\n",
3832 proc->filename, proc->value);
3833 } else if (strcmp(proc->filename, key) == 0) {
3834 strprint(retv, inlen, "%s", proc->value);
3835 }
3836 }
3837
3838 return fulllen;
3839}
3840
1d8d3676
CB		 3841static int get_config_namespace_clone(const char *key, char *retv, int inlen,
3842 struct lxc_conf *c, void *data)
3843{
3844 int i, len;
3845 int fulllen = 0;
3846
3847 if (!retv)
3848 inlen = 0;
3849 else
3850 memset(retv, 0, inlen);
3851
3852 for (i = 0; i < LXC_NS_MAX; i++) {
3853 if (c->ns_clone & ns_info[i].clone_flag)
3854 strprint(retv, inlen, "%s\n", ns_info[i].proc_name);
3855 }
3856
3857 return fulllen;
3858}
3859
abeb5bba
CB		 3860static int get_config_namespace_keep(const char *key, char *retv, int inlen,
3861 struct lxc_conf *c, void *data)
3862{
3863 int i, len;
3864 int fulllen = 0;
3865
3866 if (!retv)
3867 inlen = 0;
3868 else
3869 memset(retv, 0, inlen);
3870
3871 for (i = 0; i < LXC_NS_MAX; i++) {
3872 if (c->ns_keep & ns_info[i].clone_flag)
3873 strprint(retv, inlen, "%s\n", ns_info[i].proc_name);
3874 }
3875
3876 return fulllen;
3877}
3878
b074bbf1
CB		 3879static int get_config_namespace_share(const char *key, char *retv, int inlen,
3880 struct lxc_conf *c, void *data)
28d9e29e
CB		 3881{
3882 int len, ns_idx;
3883 const char *namespace;
3884 int fulllen = 0;
3885
3886 if (!retv)
3887 inlen = 0;
3888 else
3889 memset(retv, 0, inlen);
3890
6333c915 3891 namespace = key + STRLITERALLEN("lxc.namespace.share.");
28d9e29e
CB		 3892 ns_idx = lxc_namespace_2_ns_idx(namespace);
3893 if (ns_idx < 0)
3894 return ns_idx;
3895
b074bbf1 3896 strprint(retv, inlen, "%s", c->ns_share[ns_idx]);
28d9e29e
CB		 3897
3898 return fulllen;
3899}
3900
e08cb901 3901/* Callbacks to clear config items. */
26471403
CB		 3902static inline int clr_config_personality(const char *key, struct lxc_conf *c,
3903 void *data)
e08cb901
CB		 3904{
3905 c->personality = -1;
3906 return 0;
3907}
03818ae3 3908
232763d6
CB		 3909static inline int clr_config_pty_max(const char *key, struct lxc_conf *c,
3910 void *data)
03818ae3 3911{
e528c735 3912 c->pty_max = 0;
03818ae3
CB		 3913 return 0;
3914}
e7a4b096 3915
fe1c5887
CB		 3916static inline int clr_config_tty_max(const char *key, struct lxc_conf *c,
3917 void *data)
e7a4b096 3918{
885766f5 3919 c->ttys.tty = 0;
e7a4b096
CB		 3920 return 0;
3921}
eaf8c0c7 3922
42e53c29 3923static inline int clr_config_tty_dir(const char *key, struct lxc_conf *c,
26471403 3924 void *data)
eaf8c0c7 3925{
885766f5
CB		 3926 free(c->ttys.dir);
3927 c->ttys.dir = NULL;
eaf8c0c7
CB		 3928 return 0;
3929}
6bd86308 3930
953fe44f
CB		 3931static inline int clr_config_apparmor_profile(const char *key,
3932 struct lxc_conf *c, void *data)
025718fb
CB		 3933{
3934 free(c->lsm_aa_profile);
3935 c->lsm_aa_profile = NULL;
3936 return 0;
3937}
3061e04e 3938
953fe44f
CB		 3939static inline int clr_config_apparmor_allow_incomplete(const char *key,
3940 struct lxc_conf *c,
3941 void *data)
3061e04e
CB		 3942{
3943 c->lsm_aa_allow_incomplete = 0;
3944 return 0;
3945}
31fc3494 3946
1800f924
WB		 3947static inline int clr_config_apparmor_allow_nesting(const char *key,
3948 struct lxc_conf *c,
3949 void *data)
3950{
3951 c->lsm_aa_allow_nesting = 0;
3952 return 0;
3953}
3954
3955static inline int clr_config_apparmor_raw(const char *key,
3956 struct lxc_conf *c,
3957 void *data)
3958{
3959 return lxc_clear_apparmor_raw(c);
3960}
3961
953fe44f
CB		 3962static inline int clr_config_selinux_context(const char *key,
3963 struct lxc_conf *c, void *data)
31fc3494
CB		 3964{
3965 free(c->lsm_se_context);
3966 c->lsm_se_context = NULL;
3967 return 0;
3968}
754d01ce 3969
43654d34
CB		 3970static inline int clr_config_cgroup_controller(const char *key,
3971 struct lxc_conf *c, void *data)
754d01ce 3972{
54860ed0
CB		 3973 return lxc_clear_cgroups(c, key, CGROUP_SUPER_MAGIC);
3974}
3975
3976static inline int clr_config_cgroup2_controller(const char *key,
3977 struct lxc_conf *c, void *data)
3978{
3979 return lxc_clear_cgroups(c, key, CGROUP2_SUPER_MAGIC);
754d01ce 3980}
d3a178de 3981
43654d34
CB		 3982static int clr_config_cgroup_dir(const char *key, struct lxc_conf *lxc_conf,
3983 void *data)
3984{
3985 if (lxc_conf->cgroup_meta.dir) {
3986 free(lxc_conf->cgroup_meta.dir);
3987 lxc_conf->cgroup_meta.dir = NULL;
3988 }
3989
3990 return 0;
3991}
3992
9caee129
CB		 3993static inline int clr_config_cgroup_relative(const char *key,
3994 struct lxc_conf *lxc_conf,
3995 void *data)
76f0e2e7 3996{
9caee129 3997 lxc_conf->cgroup_meta.relative = false;
76f0e2e7
CB		 3998 return 0;
3999}
4000
26471403
CB		 4001static inline int clr_config_idmaps(const char *key, struct lxc_conf *c,
4002 void *data)
d3a178de
CB		 4003{
4004 return lxc_clear_idmaps(c);
4005}
97d3338d 4006
46cc906d 4007static inline int clr_config_log_level(const char *key, struct lxc_conf *c,
26471403 4008 void *data)
97d3338d 4009{
4b73005c 4010 c->loglevel = LXC_LOG_LEVEL_NOTSET;
97d3338d
CB		 4011 return 0;
4012}
de46099c 4013
46cc906d 4014static inline int clr_config_log_file(const char *key, struct lxc_conf *c,
26471403 4015 void *data)
de46099c
CB		 4016{
4017 free(c->logfile);
4018 c->logfile = NULL;
4019 return 0;
4020}
b4fa13cd 4021
26471403
CB		 4022static inline int clr_config_mount(const char *key, struct lxc_conf *c,
4023 void *data)
b4fa13cd
CB		 4024{
4025 return lxc_clear_mount_entries(c);
4026}
4be81021 4027
26471403
CB		 4028static inline int clr_config_mount_auto(const char *key, struct lxc_conf *c,
4029 void *data)
4be81021
CB		 4030{
4031 return lxc_clear_automounts(c);
4032}
350d4b15 4033
47148e96
CB		 4034static inline int clr_config_mount_fstab(const char *key, struct lxc_conf *c,
4035 void *data)
350d4b15
CB		 4036{
4037 free(c->fstab);
4038 c->fstab = NULL;
4039 return 0;
4040}
faca124d 4041
7a96a068
CB		 4042static inline int clr_config_rootfs_path(const char *key, struct lxc_conf *c,
4043 void *data)
faca124d
CB		 4044{
4045 free(c->rootfs.path);
4046 c->rootfs.path = NULL;
4047 return 0;
4048}
4049
6e54330c
CB		 4050static inline int clr_config_rootfs_managed(const char *key, struct lxc_conf *c,
4051 void *data)
4052{
4053 c->rootfs.managed = true;
4054 return 0;
4055}
4056
26471403
CB		 4057static inline int clr_config_rootfs_mount(const char *key, struct lxc_conf *c,
4058 void *data)
fddefc2d
CB		 4059{
4060 free(c->rootfs.mount);
4061 c->rootfs.mount = NULL;
4062 return 0;
4063}
7b1eb67d 4064
26471403
CB		 4065static inline int clr_config_rootfs_options(const char *key, struct lxc_conf *c,
4066 void *data)
7b1eb67d
CB		 4067{
4068 free(c->rootfs.options);
4069 c->rootfs.options = NULL;
3437f95c
CB		 4070
4071 free(c->rootfs.data);
4072 c->rootfs.data = NULL;
4073
7b1eb67d
CB		 4074 return 0;
4075}
02becb8d 4076
b67771bc 4077static inline int clr_config_uts_name(const char *key, struct lxc_conf *c,
26471403 4078 void *data)
d31d0103
CB		 4079{
4080 free(c->utsname);
4081 c->utsname = NULL;
4082 return 0;
4083}
c9eeb90c 4084
26471403
CB		 4085static inline int clr_config_hooks(const char *key, struct lxc_conf *c,
4086 void *data)
c9eeb90c
CB		 4087{
4088 return lxc_clear_hooks(c, key);
4089}
4090
44ae0fb6
CB		 4091static inline int clr_config_hooks_version(const char *key, struct lxc_conf *c,
4092 void *data)
4093{
4094 /* default to legacy hooks version */
4095 c->hooks_version = 0;
4096 return 0;
4097}
4098
f9373e40
CB		 4099static inline int clr_config_net(const char *key, struct lxc_conf *c,
4100 void *data)
f4488271 4101{
c302b476
CB		 4102 lxc_free_networks(&c->network);
4103
e5d2fd7c 4104 return 0;
f4488271
CB		 4105}
4106
26471403
CB		 4107static inline int clr_config_cap_drop(const char *key, struct lxc_conf *c,
4108 void *data)
244cb55b
CB		 4109{
4110 return lxc_clear_config_caps(c);
4111}
c74cc490 4112
26471403
CB		 4113static inline int clr_config_cap_keep(const char *key, struct lxc_conf *c,
4114 void *data)
c74cc490
CB		 4115{
4116 return lxc_clear_config_keepcaps(c);
4117}
4e5b633f 4118
3aed4934
CB		 4119static inline int clr_config_console_path(const char *key, struct lxc_conf *c,
4120 void *data)
4e5b633f
CB		 4121{
4122 free(c->console.path);
4123 c->console.path = NULL;
4124 return 0;
4125}
4126
7c2ec23a 4127static inline int clr_config_console_logfile(const char *key,
26471403 4128 struct lxc_conf *c, void *data)
7c2ec23a
CB		 4129{
4130 free(c->console.log_path);
4131 c->console.log_path = NULL;
4132 return 0;
4133}
bbca37d8 4134
d91adfa6
CB		 4135static inline int clr_config_console_rotate(const char *key, struct lxc_conf *c,
4136 void *data)
4137{
4138 c->console.log_rotate = 0;
4139 return 0;
4140}
4141
28f3b1cd
CB		 4142static inline int clr_config_console_buffer_size(const char *key,
4143 struct lxc_conf *c, void *data)
a04220de 4144{
28f3b1cd 4145 c->console.buffer_size = 0;
a04220de
CB		 4146 return 0;
4147}
4148
861813e5
CB		 4149static inline int clr_config_console_size(const char *key, struct lxc_conf *c,
4150 void *data)
4151{
4152 c->console.log_size = 0;
4153 return 0;
4154}
4155
0b427da0
CB		 4156static inline int clr_config_seccomp_profile(const char *key,
4157 struct lxc_conf *c, void *data)
bbca37d8
CB		 4158{
4159 free(c->seccomp);
4160 c->seccomp = NULL;
4161 return 0;
4162}
c721e86c 4163
26471403
CB		 4164static inline int clr_config_autodev(const char *key, struct lxc_conf *c,
4165 void *data)
c721e86c
CB		 4166{
4167 c->autodev = 1;
4168 return 0;
4169}
87b288d1 4170
55c84efc 4171static inline int clr_config_signal_halt(const char *key, struct lxc_conf *c,
26471403 4172 void *data)
87b288d1
CB		 4173{
4174 c->haltsignal = 0;
4175 return 0;
4176}
cae63cfa 4177
55c84efc 4178static inline int clr_config_signal_reboot(const char *key, struct lxc_conf *c,
26471403 4179 void *data)
cae63cfa
CB		 4180{
4181 c->rebootsignal = 0;
4182 return 0;
4183}
de45f3a8 4184
55c84efc 4185static inline int clr_config_signal_stop(const char *key, struct lxc_conf *c,
26471403 4186 void *data)
de45f3a8
CB		 4187{
4188 c->stopsignal = 0;
4189 return 0;
4190}
c6182222 4191
26471403
CB		 4192static inline int clr_config_start(const char *key, struct lxc_conf *c,
4193 void *data)
c6182222
CB		 4194{
4195 if (strcmp(key + 10, "auto") == 0)
4196 c->start_auto = 0;
4197 else if (strcmp(key + 10, "delay") == 0)
4198 c->start_delay = 0;
4199 else if (strcmp(key + 10, "order") == 0)
4200 c->start_order = 0;
4201
4202 return 0;
4203}
998ca94f 4204
46cc906d 4205static inline int clr_config_log_syslog(const char *key, struct lxc_conf *c,
26471403 4206 void *data)
998ca94f
CB		 4207{
4208 free(c->syslog);
4209 c->syslog = NULL;
4210 return 0;
4211}
adad12ca 4212
26471403
CB		 4213static inline int clr_config_monitor(const char *key, struct lxc_conf *c,
4214 void *data)
adad12ca
CB		 4215{
4216 c->monitor_unshare = 0;
4217 return 0;
4218}
4850d223 4219
258f8051
CB		 4220static inline int clr_config_monitor_signal_pdeath(const char *key,
4221 struct lxc_conf *c, void *data)
4222{
4223 c->monitor_signal_pdeath = 0;
4224 return 0;
4225}
4226
26471403
CB		 4227static inline int clr_config_group(const char *key, struct lxc_conf *c,
4228 void *data)
4850d223
CB		 4229{
4230 return lxc_clear_groups(c);
4231}
832fb63a 4232
26471403
CB		 4233static inline int clr_config_environment(const char *key, struct lxc_conf *c,
4234 void *data)
832fb63a
CB		 4235{
4236 return lxc_clear_environment(c);
4850d223 4237}
8e90af3e 4238
5cda27c1
SH		 4239static inline int clr_config_execute_cmd(const char *key, struct lxc_conf *c,
4240 void *data)
4241{
4242 free(c->execute_cmd);
4243 c->execute_cmd = NULL;
4244 return 0;
4245}
4246
26471403
CB		 4247static inline int clr_config_init_cmd(const char *key, struct lxc_conf *c,
4248 void *data)
8e90af3e
CB		 4249{
4250 free(c->init_cmd);
4251 c->init_cmd = NULL;
4252 return 0;
4253}
ec76dcfb 4254
3c491553
L		 4255static inline int clr_config_init_cwd(const char *key, struct lxc_conf *c,
4256 void *data)
4257{
4258 free(c->init_cwd);
4259 c->init_cwd = NULL;
4260 return 0;
4261}
4262
26471403
CB		 4263static inline int clr_config_init_uid(const char *key, struct lxc_conf *c,
4264 void *data)
ec76dcfb
CB		 4265{
4266 c->init_uid = 0;
4267 return 0;
4268}
1044b247 4269
26471403
CB		 4270static inline int clr_config_init_gid(const char *key, struct lxc_conf *c,
4271 void *data)
1044b247
CB		 4272{
4273 c->init_gid = 0;
4274 return 0;
4275}
59e370db 4276
26471403
CB		 4277static inline int clr_config_ephemeral(const char *key, struct lxc_conf *c,
4278 void *data)
59e370db
CB		 4279{
4280 c->ephemeral = 0;
4281 return 0;
4282}
b98c5ab0 4283
26471403
CB		 4284static inline int clr_config_no_new_privs(const char *key, struct lxc_conf *c,
4285 void *data)
b98c5ab0
CB		 4286{
4287 c->no_new_privs = false;
4288 return 0;
4289}
715ccc96 4290
240d4b74 4291static inline int clr_config_prlimit(const char *key, struct lxc_conf *c,
26471403 4292 void *data)
715ccc96
CB		 4293{
4294 return lxc_clear_limits(c, key);
4295}
fdf3c589 4296
7edd0540
L		 4297static inline int clr_config_sysctl(const char *key, struct lxc_conf *c,
4298 void *data)
4299{
4300 return lxc_clear_sysctls(c, key);
4301}
4302
61d7a733
YT		 4303static inline int clr_config_proc(const char *key, struct lxc_conf *c,
4304 void *data)
4305{
4306 return lxc_clear_procs(c, key);
4307}
4308
26471403
CB		 4309static inline int clr_config_includefiles(const char *key, struct lxc_conf *c,
4310 void *data)
fdf3c589
CB		 4311{
4312 lxc_clear_includes(c);
4313 return 0;
4314}
a3c8e600 4315
1d8d3676
CB		 4316static int clr_config_namespace_clone(const char *key,
4317 struct lxc_conf *lxc_conf, void *data)
4318{
4319 lxc_conf->ns_clone = 0;
4320 return 0;
4321}
4322
abeb5bba
CB		 4323static int clr_config_namespace_keep(const char *key, struct lxc_conf *lxc_conf,
4324 void *data)
4325{
4326 lxc_conf->ns_keep = 0;
4327 return 0;
4328}
4329
b074bbf1
CB		 4330static int clr_config_namespace_share(const char *key,
4331 struct lxc_conf *lxc_conf, void *data)
28d9e29e
CB		 4332{
4333 int ns_idx;
4334 const char *namespace;
4335
6333c915 4336 namespace = key + STRLITERALLEN("lxc.namespace.share.");
28d9e29e
CB		 4337 ns_idx = lxc_namespace_2_ns_idx(namespace);
4338 if (ns_idx < 0)
4339 return ns_idx;
4340
b074bbf1
CB		 4341 free(lxc_conf->ns_share[ns_idx]);
4342 lxc_conf->ns_share[ns_idx] = NULL;
28d9e29e
CB		 4343
4344 return 0;
4345}
4346
a3c8e600 4347static int get_config_includefiles(const char *key, char *retv, int inlen,
cccd2219 4348 struct lxc_conf *c, void *data)
a3c8e600
CB		 4349{
4350 return -ENOSYS;
4351}
40db5d2f 4352
31ee747b
CB		 4353static struct lxc_config_t *get_network_config_ops(const char *key,
4354 struct lxc_conf *lxc_conf,
4355 ssize_t *idx,
4356 char **deindexed_key)
40db5d2f 4357{
31ee747b
CB		 4358 int ret;
4359 unsigned int tmpidx;
4360 size_t numstrlen;
40db5d2f
CB		 4361 char *copy, *idx_start, *idx_end;
4362 struct lxc_config_t *config = NULL;
4363
4364 /* check that this is a sensible network key */
31ee747b
CB		 4365 if (strncmp("lxc.net.", key, 8)) {
4366 ERROR("Invalid network configuration key \"%s\"", key);
40db5d2f 4367 return NULL;
31ee747b 4368 }
40db5d2f
CB		 4369
4370 copy = strdup(key);
31ee747b
CB		 4371 if (!copy) {
4372 ERROR("Failed to duplicate string \"%s\"", key);
40db5d2f 4373 return NULL;
31ee747b 4374 }
40db5d2f 4375
f9373e40 4376 /* lxc.net.<n> */
31ee747b
CB		 4377 if (!isdigit(*(key + 8))) {
4378 ERROR("Failed to detect digit in string \"%s\"", key + 8);
4379 goto on_error;
4380 }
40db5d2f 4381
31ee747b
CB		 4382 /* beginning of index string */
4383 idx_start = (copy + 7);
4384 *idx_start = '\0';
40db5d2f 4385
31ee747b
CB		 4386 /* end of index string */
4387 idx_end = strchr((copy + 8), '.');
7451daf8
CB		 4388 if (idx_end)
4389 *idx_end = '\0';
31ee747b
CB		 4390
4391 /* parse current index */
4392 ret = lxc_safe_uint((idx_start + 1), &tmpidx);
4393 if (ret < 0) {
6d1400b5 4394 errno = -ret;
4395 SYSERROR("Failed to parse usigned integer from string \"%s\"",
4396 idx_start + 1);
31ee747b
CB		 4397 *idx = ret;
4398 goto on_error;
4399 }
40db5d2f 4400
31ee747b
CB		 4401 /* This, of course is utterly nonsensical on so many levels, but
4402 * better safe than sorry.
4403 * (Checking for INT_MAX here is intentional.)
4404 */
4405 if (tmpidx == INT_MAX) {
25a908b8
CB		 4406 SYSERROR("Number of configured networks would overflow the "
4407 "counter");
31ee747b 4408 goto on_error;
40db5d2f 4409 }
31ee747b
CB		 4410 *idx = tmpidx;
4411
4412 numstrlen = strlen((idx_start + 1));
4413
4414 /* repair configuration key */
4415 *idx_start = '.';
31ee747b 4416
7451daf8
CB		 4417 /* lxc.net.<idx>.<subkey> */
4418 if (idx_end) {
4419 *idx_end = '.';
24fa7df6
FA		 4420 if (strlen(idx_end + 1) == 0) {
4421 ERROR("No subkey in network configuration key \"%s\"", key);
4422 goto on_error;
4423 }
40db5d2f 4424
7451daf8
CB		 4425 memmove(copy + 8, idx_end + 1, strlen(idx_end + 1));
4426 copy[strlen(key) - numstrlen + 1] = '\0';
4427
300df83e 4428 config = lxc_get_config(copy);
7451daf8 4429 if (!config) {
25a908b8 4430 ERROR("Unknown network configuration key \"%s\"", key);
7451daf8
CB		 4431 goto on_error;
4432 }
31ee747b
CB		 4433 }
4434
7451daf8
CB		 4435 if (deindexed_key)
4436 *deindexed_key = copy;
4437
31ee747b 4438 return config;
40db5d2f
CB		 4439
4440on_error:
4441 free(copy);
31ee747b 4442 return NULL;
40db5d2f
CB		 4443}
4444
25a908b8
CB		 4445/* Config entry is something like "lxc.net.0.ipv4" the key 'lxc.net.' was
4446 * found. So we make sure next comes an integer, find the right callback (by
4447 * rewriting the key), and call it.
40db5d2f 4448 */
f9373e40
CB		 4449static int set_config_net_nic(const char *key, const char *value,
4450 struct lxc_conf *lxc_conf, void *data)
40db5d2f 4451{
31ee747b
CB		 4452 int ret;
4453 const char *idxstring;
40db5d2f
CB		 4454 struct lxc_config_t *config;
4455 struct lxc_netdev *netdev;
4456 ssize_t idx = -1;
31ee747b
CB		 4457 char *deindexed_key = NULL;
4458
4459 idxstring = key + 8;
4460 if (!isdigit(*idxstring))
4461 return -1;
40db5d2f 4462
6bed0fb6 4463 if (lxc_config_value_empty(value))
f9373e40 4464 return clr_config_net_nic(key, lxc_conf, data);
6bed0fb6 4465
31ee747b 4466 config = get_network_config_ops(key, lxc_conf, &idx, &deindexed_key);
40db5d2f
CB		 4467 if (!config || idx < 0)
4468 return -1;
4469
0070b1c4 4470 netdev = lxc_get_netdev_by_idx(lxc_conf, (unsigned int)idx, true);
31ee747b
CB		 4471 if (!netdev) {
4472 free(deindexed_key);
40db5d2f 4473 return -1;
31ee747b 4474 }
40db5d2f 4475
31ee747b
CB		 4476 ret = config->set(deindexed_key, value, lxc_conf, netdev);
4477 free(deindexed_key);
4478 return ret;
40db5d2f 4479}
ff6da295 4480
f9373e40
CB		 4481static int clr_config_net_nic(const char *key, struct lxc_conf *lxc_conf,
4482 void *data)
ff6da295 4483{
31ee747b 4484 int ret;
519df1c1 4485 const char *idxstring;
ff6da295
CB		 4486 struct lxc_config_t *config;
4487 struct lxc_netdev *netdev;
31ee747b
CB		 4488 ssize_t idx = -1;
4489 char *deindexed_key = NULL;
519df1c1 4490
31ee747b
CB		 4491 idxstring = key + 8;
4492 if (!isdigit(*idxstring))
519df1c1
CB		 4493 return -1;
4494
519df1c1 4495 /* The left conjunct is pretty self-explanatory. The right conjunct
31ee747b 4496 * checks whether the two pointers are equal. If they are we know that
519df1c1
CB		 4497 * this is not a key that is namespaced any further and so we are
4498 * supposed to clear the whole network.
4499 */
4500 if (isdigit(*idxstring) && (strrchr(key, '.') == (idxstring - 1))) {
4501 unsigned int rmnetdevidx;
4502
4503 if (lxc_safe_uint(idxstring, &rmnetdevidx) < 0)
4504 return -1;
4505
4506 /* Remove network from network list. */
4507 lxc_remove_nic_by_idx(lxc_conf, rmnetdevidx);
4508 return 0;
4509 }
ff6da295 4510
31ee747b 4511 config = get_network_config_ops(key, lxc_conf, &idx, &deindexed_key);
ff6da295
CB		 4512 if (!config || idx < 0)
4513 return -1;
4514
0070b1c4 4515 netdev = lxc_get_netdev_by_idx(lxc_conf, (unsigned int)idx, false);
31ee747b
CB		 4516 if (!netdev) {
4517 free(deindexed_key);
ff6da295 4518 return -1;
31ee747b 4519 }
ff6da295 4520
31ee747b
CB		 4521 ret = config->clr(deindexed_key, lxc_conf, netdev);
4522 free(deindexed_key);
4523 return ret;
ff6da295
CB		 4524}
4525
f9373e40
CB		 4526static int clr_config_net_type(const char *key, struct lxc_conf *lxc_conf,
4527 void *data)
ff6da295 4528{
070a05af 4529 struct lxc_netdev *netdev = data;
ff6da295 4530
ff6da295
CB		 4531 if (!netdev)
4532 return -1;
4533
4534 netdev->type = -1;
4535
4536 return 0;
4537}
4538
f9373e40
CB		 4539static int clr_config_net_name(const char *key, struct lxc_conf *lxc_conf,
4540 void *data)
ff6da295 4541{
070a05af 4542 struct lxc_netdev *netdev = data;
ff6da295 4543
ff6da295
CB		 4544 if (!netdev)
4545 return -1;
4546
de4855a8 4547 netdev->name[0] = '\0';
ff6da295
CB		 4548
4549 return 0;
4550}
4551
f9373e40
CB		 4552static int clr_config_net_flags(const char *key, struct lxc_conf *lxc_conf,
4553 void *data)
ff6da295 4554{
070a05af 4555 struct lxc_netdev *netdev = data;
ff6da295 4556
ff6da295
CB		 4557 if (!netdev)
4558 return -1;
4559
4560 netdev->flags = 0;
4561
4562 return 0;
4563}
4564
f9373e40
CB		 4565static int clr_config_net_link(const char *key, struct lxc_conf *lxc_conf,
4566 void *data)
ff6da295 4567{
070a05af 4568 struct lxc_netdev *netdev = data;
ff6da295 4569
ff6da295
CB		 4570 if (!netdev)
4571 return -1;
4572
de4855a8 4573 netdev->link[0] = '\0';
ff6da295
CB		 4574
4575 return 0;
4576}
4577
f9373e40
CB		 4578static int clr_config_net_macvlan_mode(const char *key,
4579 struct lxc_conf *lxc_conf, void *data)
ff6da295 4580{
070a05af 4581 struct lxc_netdev *netdev = data;
ff6da295 4582
ff6da295
CB		 4583 if (!netdev)
4584 return -1;
4585
6bed0fb6
CB		 4586 if (netdev->type != LXC_NET_MACVLAN)
4587 return 0;
4588
ff6da295
CB		 4589 netdev->priv.macvlan_attr.mode = -1;
4590
4591 return 0;
4592}
4593
f9373e40
CB		 4594static int clr_config_net_veth_pair(const char *key, struct lxc_conf *lxc_conf,
4595 void *data)
ff6da295 4596{
070a05af 4597 struct lxc_netdev *netdev = data;
ff6da295 4598
ff6da295
CB		 4599 if (!netdev)
4600 return -1;
4601
de4855a8 4602 netdev->priv.veth_attr.pair[0] = '\0';
ff6da295
CB		 4603
4604 return 0;
4605}
4606
f9373e40
CB		 4607static int clr_config_net_script_up(const char *key, struct lxc_conf *lxc_conf,
4608 void *data)
ff6da295 4609{
070a05af 4610 struct lxc_netdev *netdev = data;
ff6da295 4611
ff6da295
CB		 4612 if (!netdev)
4613 return -1;
4614
4615 free(netdev->upscript);
4616 netdev->upscript = NULL;
4617
4618 return 0;
4619}
4620
f9373e40
CB		 4621static int clr_config_net_script_down(const char *key,
4622 struct lxc_conf *lxc_conf, void *data)
ff6da295 4623{
070a05af 4624 struct lxc_netdev *netdev = data;
ff6da295 4625
ff6da295
CB		 4626 if (!netdev)
4627 return -1;
4628
4629 free(netdev->downscript);
4630 netdev->downscript = NULL;
4631
4632 return 0;
4633}
4634
f9373e40
CB		 4635static int clr_config_net_hwaddr(const char *key, struct lxc_conf *lxc_conf,
4636 void *data)
ff6da295 4637{
070a05af 4638 struct lxc_netdev *netdev = data;
ff6da295 4639
ff6da295
CB		 4640 if (!netdev)
4641 return -1;
4642
4643 free(netdev->hwaddr);
4644 netdev->hwaddr = NULL;
4645
4646 return 0;
4647}
4648
f9373e40
CB		 4649static int clr_config_net_mtu(const char *key, struct lxc_conf *lxc_conf,
4650 void *data)
ff6da295 4651{
070a05af 4652 struct lxc_netdev *netdev = data;
ff6da295 4653
ff6da295
CB		 4654 if (!netdev)
4655 return -1;
4656
4657 free(netdev->mtu);
4658 netdev->mtu = NULL;
4659
4660 return 0;
4661}
4662
f9373e40
CB		 4663static int clr_config_net_vlan_id(const char *key, struct lxc_conf *lxc_conf,
4664 void *data)
ff6da295 4665{
070a05af 4666 struct lxc_netdev *netdev = data;
ff6da295 4667
ff6da295
CB		 4668 if (!netdev)
4669 return -1;
4670
4671 netdev->priv.vlan_attr.vid = 0;
4672
4673 return 0;
4674}
4675
f9373e40
CB		 4676static int clr_config_net_ipv4_gateway(const char *key,
4677 struct lxc_conf *lxc_conf, void *data)
ff6da295 4678{
070a05af 4679 struct lxc_netdev *netdev = data;
ff6da295 4680
ff6da295
CB		 4681 if (!netdev)
4682 return -1;
4683
4684 free(netdev->ipv4_gateway);
4685 netdev->ipv4_gateway = NULL;
4686
4687 return 0;
4688}
4689
9ff60df2
CB		 4690static int clr_config_net_ipv4_address(const char *key,
4691 struct lxc_conf *lxc_conf, void *data)
ff6da295 4692{
070a05af 4693 struct lxc_netdev *netdev = data;
ff6da295
CB		 4694 struct lxc_list *cur, *next;
4695
ecbb3790
CB		 4696 if (!netdev)
4697 return -1;
ff6da295
CB		 4698
4699 lxc_list_for_each_safe(cur, &netdev->ipv4, next) {
4700 lxc_list_del(cur);
4701 free(cur->elem);
4702 free(cur);
4703 }
4704
4705 return 0;
4706}
4707
f9373e40
CB		 4708static int clr_config_net_ipv6_gateway(const char *key,
4709 struct lxc_conf *lxc_conf, void *data)
ff6da295 4710{
070a05af 4711 struct lxc_netdev *netdev = data;
ff6da295 4712
ff6da295
CB		 4713 if (!netdev)
4714 return -1;
4715
4716 free(netdev->ipv6_gateway);
4717 netdev->ipv6_gateway = NULL;
4718
4719 return 0;
4720}
4721
2e44ae28
CB		 4722static int clr_config_net_ipv6_address(const char *key,
4723 struct lxc_conf *lxc_conf, void *data)
ff6da295 4724{
070a05af 4725 struct lxc_netdev *netdev = data;
ff6da295
CB		 4726 struct lxc_list *cur, *next;
4727
ecbb3790
CB		 4728 if (!netdev)
4729 return -1;
ff6da295
CB		 4730
4731 lxc_list_for_each_safe(cur, &netdev->ipv6, next) {
4732 lxc_list_del(cur);
4733 free(cur->elem);
4734 free(cur);
4735 }
4736
4737 return 0;
4738}
9d4bf22d 4739
f9373e40
CB		 4740static int get_config_net_nic(const char *key, char *retv, int inlen,
4741 struct lxc_conf *c, void *data)
9d4bf22d 4742{
31ee747b
CB		 4743 int ret;
4744 const char *idxstring;
9d4bf22d
CB		 4745 struct lxc_config_t *config;
4746 struct lxc_netdev *netdev;
4747 ssize_t idx = -1;
31ee747b 4748 char *deindexed_key = NULL;
9d4bf22d 4749
31ee747b
CB		 4750 idxstring = key + 8;
4751 if (!isdigit(*idxstring))
4752 return -1;
4753
4754 config = get_network_config_ops(key, c, &idx, &deindexed_key);
9d4bf22d
CB		 4755 if (!config || idx < 0)
4756 return -1;
4757
0070b1c4 4758 netdev = lxc_get_netdev_by_idx(c, (unsigned int)idx, false);
31ee747b
CB		 4759 if (!netdev) {
4760 free(deindexed_key);
9d4bf22d 4761 return -1;
31ee747b 4762 }
9d4bf22d 4763
31ee747b
CB		 4764 ret = config->get(deindexed_key, retv, inlen, c, netdev);
4765 free(deindexed_key);
4766 return ret;
9d4bf22d
CB		 4767}
4768
f9373e40
CB		 4769static int get_config_net_type(const char *key, char *retv, int inlen,
4770 struct lxc_conf *c, void *data)
9d4bf22d 4771{
070a05af
CB		 4772 int len;
4773 int fulllen = 0;
4774 struct lxc_netdev *netdev = data;
9d4bf22d
CB		 4775
4776 if (!retv)
4777 inlen = 0;
4778 else
4779 memset(retv, 0, inlen);
4780
9d4bf22d
CB		 4781 if (!netdev)
4782 return -1;
4783
4784 strprint(retv, inlen, "%s", lxc_net_type_to_str(netdev->type));
4785
4786 return fulllen;
4787}
4788
f9373e40
CB		 4789static int get_config_net_flags(const char *key, char *retv, int inlen,
4790 struct lxc_conf *c, void *data)
9d4bf22d 4791{
070a05af
CB		 4792 int len;
4793 int fulllen = 0;
4794 struct lxc_netdev *netdev = data;
9d4bf22d
CB		 4795
4796 if (!retv)
4797 inlen = 0;
4798 else
4799 memset(retv, 0, inlen);
4800
9d4bf22d
CB		 4801 if (!netdev)
4802 return -1;
4803
4804 if (netdev->flags & IFF_UP)
4805 strprint(retv, inlen, "up");
4806
4807 return fulllen;
4808}
4809
f9373e40
CB		 4810static int get_config_net_link(const char *key, char *retv, int inlen,
4811 struct lxc_conf *c, void *data)
9d4bf22d 4812{
070a05af
CB		 4813 int len;
4814 int fulllen = 0;
4815 struct lxc_netdev *netdev = data;
9d4bf22d
CB		 4816
4817 if (!retv)
4818 inlen = 0;
4819 else
4820 memset(retv, 0, inlen);
4821
9d4bf22d
CB		 4822 if (!netdev)
4823 return -1;
4824
de4855a8 4825 if (netdev->link[0] != '\0')
9d4bf22d
CB		 4826 strprint(retv, inlen, "%s", netdev->link);
4827
4828 return fulllen;
4829}
4830
f9373e40
CB		 4831static int get_config_net_name(const char *key, char *retv, int inlen,
4832 struct lxc_conf *c, void *data)
9d4bf22d 4833{
070a05af
CB		 4834 int len;
4835 int fulllen = 0;
4836 struct lxc_netdev *netdev = data;
9d4bf22d
CB		 4837
4838 if (!retv)
4839 inlen = 0;
4840 else
4841 memset(retv, 0, inlen);
4842
9d4bf22d
CB		 4843 if (!netdev)
4844 return -1;
4845
de4855a8 4846 if (netdev->name[0] != '\0')
9d4bf22d
CB		 4847 strprint(retv, inlen, "%s", netdev->name);
4848
4849 return fulllen;
4850}
4851
f9373e40
CB		 4852static int get_config_net_macvlan_mode(const char *key, char *retv, int inlen,
4853 struct lxc_conf *c, void *data)
9d4bf22d 4854{
070a05af
CB		 4855 int len;
4856 int fulllen = 0;
9d4bf22d 4857 const char *mode;
070a05af 4858 struct lxc_netdev *netdev = data;
9d4bf22d
CB		 4859
4860 if (!retv)
4861 inlen = 0;
4862 else
4863 memset(retv, 0, inlen);
4864
9d4bf22d
CB		 4865 if (!netdev)
4866 return -1;
4867
4868 if (netdev->type != LXC_NET_MACVLAN)
4869 return 0;
4870
4871 switch (netdev->priv.macvlan_attr.mode) {
4872 case MACVLAN_MODE_PRIVATE:
4873 mode = "private";
4874 break;
4875 case MACVLAN_MODE_VEPA:
4876 mode = "vepa";
4877 break;
4878 case MACVLAN_MODE_BRIDGE:
4879 mode = "bridge";
4880 break;
4881 case MACVLAN_MODE_PASSTHRU:
4882 mode = "passthru";
4883 break;
4884 default:
4885 mode = "(invalid)";
4886 break;
4887 }
4888
4889 strprint(retv, inlen, "%s", mode);
4890
4891 return fulllen;
4892}
4893
f9373e40
CB		 4894static int get_config_net_veth_pair(const char *key, char *retv, int inlen,
4895 struct lxc_conf *c, void *data)
9d4bf22d 4896{
070a05af
CB		 4897 int len;
4898 int fulllen = 0;
4899 struct lxc_netdev *netdev = data;
9d4bf22d
CB		 4900
4901 if (!retv)
4902 inlen = 0;
4903 else
4904 memset(retv, 0, inlen);
4905
9d4bf22d
CB		 4906 if (!netdev)
4907 return -1;
4908
4909 if (netdev->type != LXC_NET_VETH)
4910 return 0;
4911
4912 strprint(retv, inlen, "%s",
de4855a8
CB		 4913 netdev->priv.veth_attr.pair[0] != '\0'
4914 ? netdev->priv.veth_attr.pair
4915 : netdev->priv.veth_attr.veth1);
9d4bf22d
CB		 4916
4917 return fulllen;
4918}
4919
f9373e40
CB		 4920static int get_config_net_script_up(const char *key, char *retv, int inlen,
4921 struct lxc_conf *c, void *data)
9d4bf22d 4922{
070a05af
CB		 4923 int len;
4924 int fulllen = 0;
4925 struct lxc_netdev *netdev = data;
9d4bf22d
CB		 4926
4927 if (!retv)
4928 inlen = 0;
4929 else
4930 memset(retv, 0, inlen);
4931
9d4bf22d
CB		 4932 if (!netdev)
4933 return -1;
4934
4935 if (netdev->upscript)
4936 strprint(retv, inlen, "%s", netdev->upscript);
4937
4938 return fulllen;
4939}
4940
f9373e40
CB		 4941static int get_config_net_script_down(const char *key, char *retv, int inlen,
4942 struct lxc_conf *c, void *data)
9d4bf22d 4943{
070a05af
CB		 4944 int len;
4945 int fulllen = 0;
4946 struct lxc_netdev *netdev = data;
9d4bf22d
CB		 4947
4948 if (!retv)
4949 inlen = 0;
4950 else
4951 memset(retv, 0, inlen);
4952
9d4bf22d
CB		 4953 if (!netdev)
4954 return -1;
4955
4956 if (netdev->downscript)
4957 strprint(retv, inlen, "%s", netdev->downscript);
4958
4959 return fulllen;
4960}
4961
f9373e40
CB		 4962static int get_config_net_hwaddr(const char *key, char *retv, int inlen,
4963 struct lxc_conf *c, void *data)
9d4bf22d 4964{
070a05af
CB		 4965 int len;
4966 int fulllen = 0;
4967 struct lxc_netdev *netdev = data;
9d4bf22d
CB		 4968
4969 if (!retv)
4970 inlen = 0;
4971 else
4972 memset(retv, 0, inlen);
4973
9d4bf22d
CB		 4974 if (!netdev)
4975 return -1;
4976
4977 if (netdev->hwaddr)
4978 strprint(retv, inlen, "%s", netdev->hwaddr);
4979
4980 return fulllen;
4981}
4982
f9373e40
CB		 4983static int get_config_net_mtu(const char *key, char *retv, int inlen,
4984 struct lxc_conf *c, void *data)
9d4bf22d 4985{
070a05af
CB		 4986 int len;
4987 int fulllen = 0;
4988 struct lxc_netdev *netdev = data;
9d4bf22d
CB		 4989
4990 if (!retv)
4991 inlen = 0;
4992 else
4993 memset(retv, 0, inlen);
4994
9d4bf22d
CB		 4995 if (!netdev)
4996 return -1;
4997
4998 if (netdev->mtu)
4999 strprint(retv, inlen, "%s", netdev->mtu);
5000
5001 return fulllen;
5002}
5003
f9373e40
CB		 5004static int get_config_net_vlan_id(const char *key, char *retv, int inlen,
5005 struct lxc_conf *c, void *data)
9d4bf22d 5006{
070a05af
CB		 5007 int len;
5008 int fulllen = 0;
5009 struct lxc_netdev *netdev = data;
9d4bf22d
CB		 5010
5011 if (!retv)
5012 inlen = 0;
5013 else
5014 memset(retv, 0, inlen);
5015
9d4bf22d
CB		 5016 if (!netdev)
5017 return -1;
5018
5019 if (netdev->type != LXC_NET_VLAN)
5020 return 0;
5021
5022 strprint(retv, inlen, "%d", netdev->priv.vlan_attr.vid);
5023
5024 return fulllen;
5025}
5026
f9373e40
CB		 5027static int get_config_net_ipv4_gateway(const char *key, char *retv, int inlen,
5028 struct lxc_conf *c, void *data)
9d4bf22d 5029{
070a05af 5030 int len;
9d4bf22d 5031 char buf[INET_ADDRSTRLEN];
070a05af
CB		 5032 int fulllen = 0;
5033 struct lxc_netdev *netdev = data;
9d4bf22d
CB		 5034
5035 if (!retv)
5036 inlen = 0;
5037 else
5038 memset(retv, 0, inlen);
5039
9d4bf22d
CB		 5040 if (!netdev)
5041 return -1;
5042
5043 if (netdev->ipv4_gateway_auto) {
5044 strprint(retv, inlen, "auto");
5045 } else if (netdev->ipv4_gateway) {
5046 inet_ntop(AF_INET, netdev->ipv4_gateway, buf, sizeof(buf));
5047 strprint(retv, inlen, "%s", buf);
5048 }
5049
5050 return fulllen;
5051}
5052
9ff60df2
CB		 5053static int get_config_net_ipv4_address(const char *key, char *retv, int inlen,
5054 struct lxc_conf *c, void *data)
9d4bf22d 5055{
070a05af 5056 int len;
9d4bf22d
CB		 5057 size_t listlen;
5058 char buf[INET_ADDRSTRLEN];
9d4bf22d 5059 struct lxc_list *it;
070a05af
CB		 5060 int fulllen = 0;
5061 struct lxc_netdev *netdev = data;
9d4bf22d
CB		 5062
5063 if (!retv)
5064 inlen = 0;
5065 else
5066 memset(retv, 0, inlen);
5067
9d4bf22d
CB		 5068 if (!netdev)
5069 return -1;
5070
5071 listlen = lxc_list_len(&netdev->ipv4);
5072 lxc_list_for_each(it, &netdev->ipv4) {
5073 struct lxc_inetdev *i = it->elem;
5074 inet_ntop(AF_INET, &i->addr, buf, sizeof(buf));
6fc7d8b6 5075 strprint(retv, inlen, "%s/%u%s", buf, i->prefix,
9d4bf22d
CB		 5076 (listlen-- > 1) ? "\n" : "");
5077 }
5078
5079 return fulllen;
5080}
5081
f9373e40
CB		 5082static int get_config_net_ipv6_gateway(const char *key, char *retv, int inlen,
5083 struct lxc_conf *c, void *data)
9d4bf22d 5084{
070a05af 5085 int len;
9d4bf22d 5086 char buf[INET6_ADDRSTRLEN];
070a05af
CB		 5087 int fulllen = 0;
5088 struct lxc_netdev *netdev = data;
9d4bf22d
CB		 5089
5090 if (!retv)
5091 inlen = 0;
5092 else
5093 memset(retv, 0, inlen);
5094
9d4bf22d
CB		 5095 if (!netdev)
5096 return -1;
5097
5098 if (netdev->ipv6_gateway_auto) {
5099 strprint(retv, inlen, "auto");
5100 } else if (netdev->ipv6_gateway) {
5101 inet_ntop(AF_INET6, netdev->ipv6_gateway, buf, sizeof(buf));
5102 strprint(retv, inlen, "%s", buf);
5103 }
5104
5105 return fulllen;
5106}
5107
2e44ae28
CB		 5108static int get_config_net_ipv6_address(const char *key, char *retv, int inlen,
5109 struct lxc_conf *c, void *data)
9d4bf22d 5110{
070a05af 5111 int len;
9d4bf22d
CB		 5112 size_t listlen;
5113 char buf[INET6_ADDRSTRLEN];
9d4bf22d 5114 struct lxc_list *it;
070a05af
CB		 5115 int fulllen = 0;
5116 struct lxc_netdev *netdev = data;
9d4bf22d
CB		 5117
5118 if (!retv)
5119 inlen = 0;
5120 else
5121 memset(retv, 0, inlen);
5122
9d4bf22d
CB		 5123 if (!netdev)
5124 return -1;
5125
5126 listlen = lxc_list_len(&netdev->ipv6);
5127 lxc_list_for_each(it, &netdev->ipv6) {
5128 struct lxc_inet6dev *i = it->elem;
5129 inet_ntop(AF_INET6, &i->addr, buf, sizeof(buf));
6fc7d8b6 5130 strprint(retv, inlen, "%s/%u%s", buf, i->prefix,
9d4bf22d
CB		 5131 (listlen-- > 1) ? "\n" : "");
5132 }
5133
5134 return fulllen;
5135}
cfc67626
CB		 5136
5137int lxc_list_config_items(char *retv, int inlen)
5138{
5139 size_t i;
5140 int len;
5141 int fulllen = 0;
5142
5143 if (!retv)
5144 inlen = 0;
5145 else
5146 memset(retv, 0, inlen);
5147
5148 for (i = 0; i < config_size; i++) {
5149 char *s = config[i].name;
300df83e 5150
cfc67626
CB		 5151 if (s[strlen(s) - 1] == '.')
5152 continue;
300df83e 5153
cfc67626
CB		 5154 strprint(retv, inlen, "%s\n", s);
5155 }
5156
5157 return fulllen;
5158}
a5448c15 5159
fe9b7349
CB		 5160int lxc_list_subkeys(struct lxc_conf *conf, const char *key, char *retv,
5161 int inlen)
5162{
5163 int len;
5164 int fulllen = 0;
5165
5166 if (!retv)
5167 inlen = 0;
5168 else
5169 memset(retv, 0, inlen);
5170
5171 if (!strcmp(key, "lxc.apparmor")) {
5172 strprint(retv, inlen, "allow_incomplete\n");
1800f924 5173 strprint(retv, inlen, "allow_nesting\n");
fe9b7349 5174 strprint(retv, inlen, "profile\n");
1800f924 5175 strprint(retv, inlen, "raw\n");
dae8c253
CB		 5176 } else if (!strcmp(key, "lxc.cgroup")) {
5177 strprint(retv, inlen, "dir\n");
fe9b7349
CB		 5178 } else if (!strcmp(key, "lxc.selinux")) {
5179 strprint(retv, inlen, "context\n");
5180 } else if (!strcmp(key, "lxc.mount")) {
5181 strprint(retv, inlen, "auto\n");
5182 strprint(retv, inlen, "entry\n");
5183 strprint(retv, inlen, "fstab\n");
5184 } else if (!strcmp(key, "lxc.rootfs")) {
5185 strprint(retv, inlen, "mount\n");
5186 strprint(retv, inlen, "options\n");
5187 strprint(retv, inlen, "path\n");
5188 } else if (!strcmp(key, "lxc.uts")) {
5189 strprint(retv, inlen, "name\n");
5190 } else if (!strcmp(key, "lxc.hook")) {
5191 strprint(retv, inlen, "autodev\n");
5192 strprint(retv, inlen, "clone\n");
5193 strprint(retv, inlen, "destroy\n");
5194 strprint(retv, inlen, "mount\n");
5195 strprint(retv, inlen, "post-stop\n");
5196 strprint(retv, inlen, "pre-mount\n");
5197 strprint(retv, inlen, "pre-start\n");
08dd2805 5198 strprint(retv, inlen, "start-host\n");
fe9b7349
CB		 5199 strprint(retv, inlen, "start\n");
5200 strprint(retv, inlen, "stop\n");
5201 } else if (!strcmp(key, "lxc.cap")) {
5202 strprint(retv, inlen, "drop\n");
5203 strprint(retv, inlen, "keep\n");
5204 } else if (!strcmp(key, "lxc.console")) {
5205 strprint(retv, inlen, "logfile\n");
5206 strprint(retv, inlen, "path\n");
5207 } else if (!strcmp(key, "lxc.seccomp")) {
5208 strprint(retv, inlen, "profile\n");
5209 } else if (!strcmp(key, "lxc.signal")) {
5210 strprint(retv, inlen, "halt\n");
5211 strprint(retv, inlen, "reboot\n");
5212 strprint(retv, inlen, "stop\n");
5213 } else if (!strcmp(key, "lxc.start")) {
5214 strprint(retv, inlen, "auto\n");
5215 strprint(retv, inlen, "delay\n");
5216 strprint(retv, inlen, "order\n");
5217 } else if (!strcmp(key, "lxc.monitor")) {
5218 strprint(retv, inlen, "unshare\n");
5219 } else {
5220 fulllen = -1;
5221 }
5222
5223 return fulllen;
5224}
5225
a5448c15
CB		 5226int lxc_list_net(struct lxc_conf *c, const char *key, char *retv, int inlen)
5227{
5228 int len;
5229 const char *idxstring;
a5448c15
CB		 5230 struct lxc_netdev *netdev;
5231 int fulllen = 0;
5232 ssize_t idx = -1;
a5448c15
CB		 5233
5234 idxstring = key + 8;
5235 if (!isdigit(*idxstring))
5236 return -1;
5237
7451daf8
CB		 5238 (void)get_network_config_ops(key, c, &idx, NULL);
5239 if (idx < 0)
a5448c15
CB		 5240 return -1;
5241
5242 netdev = lxc_get_netdev_by_idx(c, (unsigned int)idx, false);
a5448c15
CB		 5243 if (!netdev)
5244 return -1;
5245
5246 if (!retv)
5247 inlen = 0;
5248 else
5249 memset(retv, 0, inlen);
5250
5251 strprint(retv, inlen, "type\n");
5252 strprint(retv, inlen, "script.up\n");
5253 strprint(retv, inlen, "script.down\n");
5254 if (netdev->type != LXC_NET_EMPTY) {
5255 strprint(retv, inlen, "flags\n");
5256 strprint(retv, inlen, "link\n");
5257 strprint(retv, inlen, "name\n");
5258 strprint(retv, inlen, "hwaddr\n");
5259 strprint(retv, inlen, "mtu\n");
5260 strprint(retv, inlen, "ipv6.address\n");
5261 strprint(retv, inlen, "ipv6.gateway\n");
5262 strprint(retv, inlen, "ipv4.address\n");
5263 strprint(retv, inlen, "ipv4.gateway\n");
5264 }
5265
5266 switch (netdev->type) {
5267 case LXC_NET_VETH:
5268 strprint(retv, inlen, "veth.pair\n");
5269 break;
5270 case LXC_NET_MACVLAN:
5271 strprint(retv, inlen, "macvlan.mode\n");
5272 break;
5273 case LXC_NET_VLAN:
5274 strprint(retv, inlen, "vlan.id\n");
5275 break;
5276 case LXC_NET_PHYS:
5277 break;
5278 }
5279
5280 return fulllen;
5281}
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