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confile.c
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confile.c
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/*
* lxc: linux Container library
* (C) Copyright IBM Corp. 2007, 2008
*
* Authors:
* Daniel Lezcano <daniel.lezcano at free.fr>
* Serge Hallyn <serge@hallyn.com>
* Christian Brauner <christian.brauner@ubuntu.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef _GNU_SOURCE
#define _GNU_SOURCE 1
#endif
#define __STDC_FORMAT_MACROS
#include <arpa/inet.h>
#include <ctype.h>
#include <dirent.h>
#include <errno.h>
#include <fcntl.h>
#include <inttypes.h>
#include <net/if.h>
#include <netinet/in.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/param.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/utsname.h>
#include <syslog.h>
#include <time.h>
#include <unistd.h>
#include "conf.h"
#include "config.h"
#include "confile.h"
#include "confile_utils.h"
#include "../include/netns_ifaddrs.h"
#include "log.h"
#include "lxcseccomp.h"
#include "network.h"
#include "parse.h"
#include "storage.h"
#include "utils.h"
#if HAVE_SYS_PERSONALITY_H
#include <sys/personality.h>
#endif
#ifndef HAVE_STRLCPY
#include "include/strlcpy.h"
#endif
#ifndef HAVE_STRLCAT
#include "include/strlcat.h"
#endif
lxc_log_define(confile, lxc);
#define lxc_config_define(name) \
__hot static int set_config_##name(const char *, const char *, \
struct lxc_conf *, void *); \
__hot static int get_config_##name(const char *, char *, int, \
struct lxc_conf *, void *); \
__hot static int clr_config_##name(const char *, struct lxc_conf *, \
void *);
lxc_config_define(autodev);
lxc_config_define(apparmor_allow_incomplete);
lxc_config_define(apparmor_allow_nesting);
lxc_config_define(apparmor_profile);
lxc_config_define(apparmor_raw);
lxc_config_define(cap_drop);
lxc_config_define(cap_keep);
lxc_config_define(cgroup_controller);
lxc_config_define(cgroup2_controller);
lxc_config_define(cgroup_dir);
lxc_config_define(cgroup_relative);
lxc_config_define(console_buffer_size);
lxc_config_define(console_logfile);
lxc_config_define(console_path);
lxc_config_define(console_rotate);
lxc_config_define(console_size);
lxc_config_define(environment);
lxc_config_define(ephemeral);
lxc_config_define(execute_cmd);
lxc_config_define(group);
lxc_config_define(hooks);
lxc_config_define(hooks_version);
lxc_config_define(idmaps);
lxc_config_define(includefiles);
lxc_config_define(init_cmd);
lxc_config_define(init_cwd);
lxc_config_define(init_gid);
lxc_config_define(init_uid);
lxc_config_define(log_file);
lxc_config_define(log_level);
lxc_config_define(log_syslog);
lxc_config_define(monitor);
lxc_config_define(monitor_signal_pdeath);
lxc_config_define(mount);
lxc_config_define(mount_auto);
lxc_config_define(mount_fstab);
lxc_config_define(namespace_clone);
lxc_config_define(namespace_keep);
lxc_config_define(namespace_share);
lxc_config_define(net);
lxc_config_define(net_flags);
lxc_config_define(net_hwaddr);
lxc_config_define(net_ipv4_address);
lxc_config_define(net_ipv4_gateway);
lxc_config_define(net_ipv6_address);
lxc_config_define(net_ipv6_gateway);
lxc_config_define(net_link);
lxc_config_define(net_macvlan_mode);
lxc_config_define(net_mtu);
lxc_config_define(net_name);
lxc_config_define(net_nic);
lxc_config_define(net_script_down);
lxc_config_define(net_script_up);
lxc_config_define(net_type);
lxc_config_define(net_veth_pair);
lxc_config_define(net_vlan_id);
lxc_config_define(no_new_privs);
lxc_config_define(personality);
lxc_config_define(prlimit);
lxc_config_define(pty_max);
lxc_config_define(rootfs_managed);
lxc_config_define(rootfs_mount);
lxc_config_define(rootfs_options);
lxc_config_define(rootfs_path);
lxc_config_define(seccomp_profile);
lxc_config_define(selinux_context);
lxc_config_define(signal_halt);
lxc_config_define(signal_reboot);
lxc_config_define(signal_stop);
lxc_config_define(start);
lxc_config_define(tty_max);
lxc_config_define(tty_dir);
lxc_config_define(uts_name);
lxc_config_define(sysctl);
lxc_config_define(proc);
static struct lxc_config_t config_jump_table[] = {
{ "lxc.arch", set_config_personality, get_config_personality, clr_config_personality, },
{ "lxc.apparmor.profile", set_config_apparmor_profile, get_config_apparmor_profile, clr_config_apparmor_profile, },
{ "lxc.apparmor.allow_incomplete", set_config_apparmor_allow_incomplete, get_config_apparmor_allow_incomplete, clr_config_apparmor_allow_incomplete, },
{ "lxc.apparmor.allow_nesting", set_config_apparmor_allow_nesting, get_config_apparmor_allow_nesting, clr_config_apparmor_allow_nesting, },
{ "lxc.apparmor.raw", set_config_apparmor_raw, get_config_apparmor_raw, clr_config_apparmor_raw, },
{ "lxc.autodev", set_config_autodev, get_config_autodev, clr_config_autodev, },
{ "lxc.cap.drop", set_config_cap_drop, get_config_cap_drop, clr_config_cap_drop, },
{ "lxc.cap.keep", set_config_cap_keep, get_config_cap_keep, clr_config_cap_keep, },
{ "lxc.cgroup2", set_config_cgroup2_controller, get_config_cgroup2_controller, clr_config_cgroup2_controller, },
{ "lxc.cgroup.dir", set_config_cgroup_dir, get_config_cgroup_dir, clr_config_cgroup_dir, },
{ "lxc.cgroup.relative", set_config_cgroup_relative, get_config_cgroup_relative, clr_config_cgroup_relative, },
{ "lxc.cgroup", set_config_cgroup_controller, get_config_cgroup_controller, clr_config_cgroup_controller, },
{ "lxc.console.buffer.size", set_config_console_buffer_size, get_config_console_buffer_size, clr_config_console_buffer_size, },
{ "lxc.console.logfile", set_config_console_logfile, get_config_console_logfile, clr_config_console_logfile, },
{ "lxc.console.path", set_config_console_path, get_config_console_path, clr_config_console_path, },
{ "lxc.console.rotate", set_config_console_rotate, get_config_console_rotate, clr_config_console_rotate, },
{ "lxc.console.size", set_config_console_size, get_config_console_size, clr_config_console_size, },
{ "lxc.environment", set_config_environment, get_config_environment, clr_config_environment, },
{ "lxc.ephemeral", set_config_ephemeral, get_config_ephemeral, clr_config_ephemeral, },
{ "lxc.execute.cmd", set_config_execute_cmd, get_config_execute_cmd, clr_config_execute_cmd, },
{ "lxc.group", set_config_group, get_config_group, clr_config_group, },
{ "lxc.hook.autodev", set_config_hooks, get_config_hooks, clr_config_hooks, },
{ "lxc.hook.clone", set_config_hooks, get_config_hooks, clr_config_hooks, },
{ "lxc.hook.destroy", set_config_hooks, get_config_hooks, clr_config_hooks, },
{ "lxc.hook.mount", set_config_hooks, get_config_hooks, clr_config_hooks, },
{ "lxc.hook.post-stop", set_config_hooks, get_config_hooks, clr_config_hooks, },
{ "lxc.hook.pre-mount", set_config_hooks, get_config_hooks, clr_config_hooks, },
{ "lxc.hook.pre-start", set_config_hooks, get_config_hooks, clr_config_hooks, },
{ "lxc.hook.start", set_config_hooks, get_config_hooks, clr_config_hooks, },
{ "lxc.hook.start-host", set_config_hooks, get_config_hooks, clr_config_hooks, },
{ "lxc.hook.stop", set_config_hooks, get_config_hooks, clr_config_hooks, },
{ "lxc.hook.version", set_config_hooks_version, get_config_hooks_version, clr_config_hooks_version, },
{ "lxc.hook", set_config_hooks, get_config_hooks, clr_config_hooks, },
{ "lxc.idmap", set_config_idmaps, get_config_idmaps, clr_config_idmaps, },
{ "lxc.include", set_config_includefiles, get_config_includefiles, clr_config_includefiles, },
{ "lxc.init.cmd", set_config_init_cmd, get_config_init_cmd, clr_config_init_cmd, },
{ "lxc.init.gid", set_config_init_gid, get_config_init_gid, clr_config_init_gid, },
{ "lxc.init.uid", set_config_init_uid, get_config_init_uid, clr_config_init_uid, },
{ "lxc.init.cwd", set_config_init_cwd, get_config_init_cwd, clr_config_init_cwd, },
{ "lxc.log.file", set_config_log_file, get_config_log_file, clr_config_log_file, },
{ "lxc.log.level", set_config_log_level, get_config_log_level, clr_config_log_level, },
{ "lxc.log.syslog", set_config_log_syslog, get_config_log_syslog, clr_config_log_syslog, },
{ "lxc.monitor.unshare", set_config_monitor, get_config_monitor, clr_config_monitor, },
{ "lxc.monitor.signal.pdeath", set_config_monitor_signal_pdeath, get_config_monitor_signal_pdeath, clr_config_monitor_signal_pdeath, },
{ "lxc.mount.auto", set_config_mount_auto, get_config_mount_auto, clr_config_mount_auto, },
{ "lxc.mount.entry", set_config_mount, get_config_mount, clr_config_mount, },
{ "lxc.mount.fstab", set_config_mount_fstab, get_config_mount_fstab, clr_config_mount_fstab, },
{ "lxc.namespace.clone", set_config_namespace_clone, get_config_namespace_clone, clr_config_namespace_clone, },
{ "lxc.namespace.keep", set_config_namespace_keep, get_config_namespace_keep, clr_config_namespace_keep, },
{ "lxc.namespace.share", set_config_namespace_share, get_config_namespace_share, clr_config_namespace_share, },
{ "lxc.net.flags", set_config_net_flags, get_config_net_flags, clr_config_net_flags, },
{ "lxc.net.hwaddr", set_config_net_hwaddr, get_config_net_hwaddr, clr_config_net_hwaddr, },
{ "lxc.net.ipv4.address", set_config_net_ipv4_address, get_config_net_ipv4_address, clr_config_net_ipv4_address, },
{ "lxc.net.ipv4.gateway", set_config_net_ipv4_gateway, get_config_net_ipv4_gateway, clr_config_net_ipv4_gateway, },
{ "lxc.net.ipv6.address", set_config_net_ipv6_address, get_config_net_ipv6_address, clr_config_net_ipv6_address, },
{ "lxc.net.ipv6.gateway", set_config_net_ipv6_gateway, get_config_net_ipv6_gateway, clr_config_net_ipv6_gateway, },
{ "lxc.net.link", set_config_net_link, get_config_net_link, clr_config_net_link, },
{ "lxc.net.macvlan.mode", set_config_net_macvlan_mode, get_config_net_macvlan_mode, clr_config_net_macvlan_mode, },
{ "lxc.net.mtu", set_config_net_mtu, get_config_net_mtu, clr_config_net_mtu, },
{ "lxc.net.name", set_config_net_name, get_config_net_name, clr_config_net_name, },
{ "lxc.net.script.down", set_config_net_script_down, get_config_net_script_down, clr_config_net_script_down, },
{ "lxc.net.script.up", set_config_net_script_up, get_config_net_script_up, clr_config_net_script_up, },
{ "lxc.net.type", set_config_net_type, get_config_net_type, clr_config_net_type, },
{ "lxc.net.vlan.id", set_config_net_vlan_id, get_config_net_vlan_id, clr_config_net_vlan_id, },
{ "lxc.net.veth.pair", set_config_net_veth_pair, get_config_net_veth_pair, clr_config_net_veth_pair, },
{ "lxc.net.", set_config_net_nic, get_config_net_nic, clr_config_net_nic, },
{ "lxc.net", set_config_net, get_config_net, clr_config_net, },
{ "lxc.no_new_privs", set_config_no_new_privs, get_config_no_new_privs, clr_config_no_new_privs, },
{ "lxc.prlimit", set_config_prlimit, get_config_prlimit, clr_config_prlimit, },
{ "lxc.pty.max", set_config_pty_max, get_config_pty_max, clr_config_pty_max, },
{ "lxc.rootfs.managed", set_config_rootfs_managed, get_config_rootfs_managed, clr_config_rootfs_managed, },
{ "lxc.rootfs.mount", set_config_rootfs_mount, get_config_rootfs_mount, clr_config_rootfs_mount, },
{ "lxc.rootfs.options", set_config_rootfs_options, get_config_rootfs_options, clr_config_rootfs_options, },
{ "lxc.rootfs.path", set_config_rootfs_path, get_config_rootfs_path, clr_config_rootfs_path, },
{ "lxc.seccomp.profile", set_config_seccomp_profile, get_config_seccomp_profile, clr_config_seccomp_profile, },
{ "lxc.selinux.context", set_config_selinux_context, get_config_selinux_context, clr_config_selinux_context, },
{ "lxc.signal.halt", set_config_signal_halt, get_config_signal_halt, clr_config_signal_halt, },
{ "lxc.signal.reboot", set_config_signal_reboot, get_config_signal_reboot, clr_config_signal_reboot, },
{ "lxc.signal.stop", set_config_signal_stop, get_config_signal_stop, clr_config_signal_stop, },
{ "lxc.start.auto", set_config_start, get_config_start, clr_config_start, },
{ "lxc.start.delay", set_config_start, get_config_start, clr_config_start, },
{ "lxc.start.order", set_config_start, get_config_start, clr_config_start, },
{ "lxc.tty.dir", set_config_tty_dir, get_config_tty_dir, clr_config_tty_dir, },
{ "lxc.tty.max", set_config_tty_max, get_config_tty_max, clr_config_tty_max, },
{ "lxc.uts.name", set_config_uts_name, get_config_uts_name, clr_config_uts_name, },
{ "lxc.sysctl", set_config_sysctl, get_config_sysctl, clr_config_sysctl, },
{ "lxc.proc", set_config_proc, get_config_proc, clr_config_proc, },
};
static const size_t config_jump_table_size = sizeof(config_jump_table) / sizeof(struct lxc_config_t);
struct lxc_config_t *lxc_get_config(const char *key)
{
size_t i;
for (i = 0; i < config_jump_table_size; i++)
if (!strncmp(config_jump_table[i].name, key, strlen(config_jump_table[i].name)))
return &config_jump_table[i];
return NULL;
}
static int set_config_net(const char *key, const char *value,
struct lxc_conf *lxc_conf, void *data)
{
if (!lxc_config_value_empty(value)) {
ERROR("lxc.net must not have a value");
return -1;
}
return clr_config_net(key, lxc_conf, data);
}
static int set_config_net_type(const char *key, const char *value,
struct lxc_conf *lxc_conf, void *data)
{
struct lxc_netdev *netdev = data;
if (lxc_config_value_empty(value))
return clr_config_net_type(key, lxc_conf, data);
if (!netdev)
return -1;
if (!strcmp(value, "veth")) {
netdev->type = LXC_NET_VETH;
} else if (!strcmp(value, "macvlan")) {
netdev->type = LXC_NET_MACVLAN;
lxc_macvlan_mode_to_flag(&netdev->priv.macvlan_attr.mode,
"private");
} else if (!strcmp(value, "vlan")) {
netdev->type = LXC_NET_VLAN;
} else if (!strcmp(value, "phys")) {
netdev->type = LXC_NET_PHYS;
} else if (!strcmp(value, "empty")) {
netdev->type = LXC_NET_EMPTY;
} else if (!strcmp(value, "none")) {
netdev->type = LXC_NET_NONE;
} else {
ERROR("Invalid network type %s", value);
return -1;
}
return 0;
}
static int set_config_net_flags(const char *key, const char *value,
struct lxc_conf *lxc_conf, void *data)
{
struct lxc_netdev *netdev = data;
if (lxc_config_value_empty(value))
return clr_config_net_flags(key, lxc_conf, data);
if (!netdev)
return -1;
netdev->flags |= IFF_UP;
return 0;
}
static int create_matched_ifnames(const char *value, struct lxc_conf *lxc_conf,
struct lxc_netdev *netdev)
{
struct netns_ifaddrs *ifaddr, *ifa;
int n;
int ret = 0;
const char *type_key = "lxc.net.type";
const char *link_key = "lxc.net.link";
const char *tmpvalue = "phys";
if (netns_getifaddrs(&ifaddr, -1, &(bool){false}) < 0) {
SYSERROR("Failed to get network interfaces");
return -1;
}
for (ifa = ifaddr, n = 0; ifa != NULL; ifa = ifa->ifa_next, n++) {
if (!ifa->ifa_addr)
continue;
if (ifa->ifa_addr->sa_family != AF_PACKET)
continue;
if (!strncmp(value, ifa->ifa_name, strlen(value) - 1)) {
ret = set_config_net_type(type_key, tmpvalue, lxc_conf,
netdev);
if (!ret) {
ret = set_config_net_link(
link_key, ifa->ifa_name, lxc_conf, netdev);
if (ret) {
ERROR("Failed to create matched ifnames");
break;
}
} else {
ERROR("Failed to create matched ifnames");
break;
}
}
}
netns_freeifaddrs(ifaddr);
ifaddr = NULL;
return ret;
}
static int set_config_net_link(const char *key, const char *value,
struct lxc_conf *lxc_conf, void *data)
{
struct lxc_netdev *netdev = data;
int ret = 0;
if (lxc_config_value_empty(value))
return clr_config_net_link(key, lxc_conf, data);
if (!netdev)
return -1;
if (value[strlen(value) - 1] == '+' && netdev->type == LXC_NET_PHYS)
ret = create_matched_ifnames(value, lxc_conf, netdev);
else
ret = network_ifname(netdev->link, value, sizeof(netdev->link));
return ret;
}
static int set_config_net_name(const char *key, const char *value,
struct lxc_conf *lxc_conf, void *data)
{
struct lxc_netdev *netdev = data;
if (lxc_config_value_empty(value))
return clr_config_net_name(key, lxc_conf, data);
if (!netdev)
return -1;
return network_ifname(netdev->name, value, sizeof(netdev->name));
}
static int set_config_net_veth_pair(const char *key, const char *value,
struct lxc_conf *lxc_conf, void *data)
{
struct lxc_netdev *netdev = data;
if (lxc_config_value_empty(value))
return clr_config_net_veth_pair(key, lxc_conf, data);
if (!netdev)
return -1;
return network_ifname(netdev->priv.veth_attr.pair, value, sizeof(netdev->priv.veth_attr.pair));
}
static int set_config_net_macvlan_mode(const char *key, const char *value,
struct lxc_conf *lxc_conf, void *data)
{
struct lxc_netdev *netdev = data;
if (lxc_config_value_empty(value))
return clr_config_net_macvlan_mode(key, lxc_conf, data);
if (!netdev)
return -1;
return lxc_macvlan_mode_to_flag(&netdev->priv.macvlan_attr.mode, value);
}
static int set_config_net_hwaddr(const char *key, const char *value,
struct lxc_conf *lxc_conf, void *data)
{
struct lxc_netdev *netdev = data;
char *new_value;
if (lxc_config_value_empty(value))
return clr_config_net_hwaddr(key, lxc_conf, data);
if (!netdev)
return -1;
new_value = strdup(value);
if (!new_value)
return -1;
rand_complete_hwaddr(new_value);
if (lxc_config_value_empty(new_value)) {
free(new_value);
netdev->hwaddr = NULL;
return 0;
}
netdev->hwaddr = new_value;
return 0;
}
static int set_config_net_vlan_id(const char *key, const char *value,
struct lxc_conf *lxc_conf, void *data)
{
int ret;
struct lxc_netdev *netdev = data;
if (lxc_config_value_empty(value))
return clr_config_net_vlan_id(key, lxc_conf, data);
if (!netdev)
return -1;
ret = get_u16(&netdev->priv.vlan_attr.vid, value, 0);
if (ret < 0)
return -1;
return 0;
}
static int set_config_net_mtu(const char *key, const char *value,
struct lxc_conf *lxc_conf, void *data)
{
struct lxc_netdev *netdev = data;
if (lxc_config_value_empty(value))
return clr_config_net_mtu(key, lxc_conf, data);
if (!netdev)
return -1;
return set_config_string_item(&netdev->mtu, value);
}
static int set_config_net_ipv4_address(const char *key, const char *value,
struct lxc_conf *lxc_conf, void *data)
{
int ret;
struct lxc_netdev *netdev = data;
struct lxc_inetdev *inetdev;
struct lxc_list *list;
char *cursor, *slash;
char *addr = NULL, *bcast = NULL, *prefix = NULL;
if (lxc_config_value_empty(value))
return clr_config_net_ipv4_address(key, lxc_conf, data);
if (!netdev)
return -1;
inetdev = malloc(sizeof(*inetdev));
if (!inetdev)
return -1;
memset(inetdev, 0, sizeof(*inetdev));
list = malloc(sizeof(*list));
if (!list) {
free(inetdev);
return -1;
}
lxc_list_init(list);
list->elem = inetdev;
addr = strdup(value);
if (!addr) {
free(inetdev);
free(list);
return -1;
}
cursor = strstr(addr, " ");
if (cursor) {
*cursor = '\0';
bcast = cursor + 1;
}
slash = strstr(addr, "/");
if (slash) {
*slash = '\0';
prefix = slash + 1;
}
ret = inet_pton(AF_INET, addr, &inetdev->addr);
if (!ret || ret < 0) {
SYSERROR("Invalid ipv4 address \"%s\"", value);
free(inetdev);
free(addr);
free(list);
return -1;
}
if (bcast) {
ret = inet_pton(AF_INET, bcast, &inetdev->bcast);
if (!ret || ret < 0) {
SYSERROR("Invalid ipv4 broadcast address \"%s\"", value);
free(inetdev);
free(list);
free(addr);
return -1;
}
}
/* No prefix specified, determine it from the network class. */
if (prefix) {
ret = lxc_safe_uint(prefix, &inetdev->prefix);
if (ret < 0) {
free(inetdev);
free(list);
free(addr);
return -1;
}
} else {
inetdev->prefix = config_ip_prefix(&inetdev->addr);
}
/* If no broadcast address, let compute one from the
* prefix and address.
*/
if (!bcast) {
inetdev->bcast.s_addr = inetdev->addr.s_addr;
inetdev->bcast.s_addr |= htonl(INADDR_BROADCAST >> inetdev->prefix);
}
lxc_list_add_tail(&netdev->ipv4, list);
free(addr);
return 0;
}
static int set_config_net_ipv4_gateway(const char *key, const char *value,
struct lxc_conf *lxc_conf, void *data)
{
struct lxc_netdev *netdev = data;
if (lxc_config_value_empty(value))
return clr_config_net_ipv4_gateway(key, lxc_conf, data);
if (!netdev)
return -1;
free(netdev->ipv4_gateway);
if (!strcmp(value, "auto")) {
netdev->ipv4_gateway = NULL;
netdev->ipv4_gateway_auto = true;
} else {
int ret;
struct in_addr *gw;
gw = malloc(sizeof(*gw));
if (!gw)
return -1;
ret = inet_pton(AF_INET, value, gw);
if (!ret || ret < 0) {
SYSERROR("Invalid ipv4 gateway address \"%s\"", value);
free(gw);
return -1;
}
netdev->ipv4_gateway = gw;
netdev->ipv4_gateway_auto = false;
}
return 0;
}
static int set_config_net_ipv6_address(const char *key, const char *value,
struct lxc_conf *lxc_conf, void *data)
{
int ret;
struct lxc_netdev *netdev = data;
struct lxc_inet6dev *inet6dev;
struct lxc_list *list;
char *slash, *valdup, *netmask;
if (lxc_config_value_empty(value))
return clr_config_net_ipv6_address(key, lxc_conf, data);
if (!netdev)
return -1;
inet6dev = malloc(sizeof(*inet6dev));
if (!inet6dev)
return -1;
memset(inet6dev, 0, sizeof(*inet6dev));
list = malloc(sizeof(*list));
if (!list) {
free(inet6dev);
return -1;
}
lxc_list_init(list);
list->elem = inet6dev;
valdup = strdup(value);
if (!valdup) {
free(list);
free(inet6dev);
return -1;
}
inet6dev->prefix = 64;
slash = strstr(valdup, "/");
if (slash) {
*slash = '\0';
netmask = slash + 1;
ret = lxc_safe_uint(netmask, &inet6dev->prefix);
if (ret < 0) {
free(list);
free(inet6dev);
free(valdup);
return -1;
}
}
ret = inet_pton(AF_INET6, valdup, &inet6dev->addr);
if (!ret || ret < 0) {
SYSERROR("Invalid ipv6 address \"%s\"", valdup);
free(list);
free(inet6dev);
free(valdup);
return -1;
}
lxc_list_add_tail(&netdev->ipv6, list);
free(valdup);
return 0;
}
static int set_config_net_ipv6_gateway(const char *key, const char *value,
struct lxc_conf *lxc_conf, void *data)
{
struct lxc_netdev *netdev = data;
if (lxc_config_value_empty(value))
return clr_config_net_ipv6_gateway(key, lxc_conf, data);
if (!netdev)
return -1;
free(netdev->ipv6_gateway);
if (!strcmp(value, "auto")) {
netdev->ipv6_gateway = NULL;
netdev->ipv6_gateway_auto = true;
} else {
int ret;
struct in6_addr *gw;
gw = malloc(sizeof(*gw));
if (!gw)
return -1;
ret = inet_pton(AF_INET6, value, gw);
if (!ret || ret < 0) {
SYSERROR("Invalid ipv6 gateway address \"%s\"", value);
free(gw);
return -1;
}
netdev->ipv6_gateway = gw;
netdev->ipv6_gateway_auto = false;
}
return 0;
}
static int set_config_net_script_up(const char *key, const char *value,
struct lxc_conf *lxc_conf, void *data)
{
struct lxc_netdev *netdev = data;
if (lxc_config_value_empty(value))
return clr_config_net_script_up(key, lxc_conf, data);
if (!netdev)
return -1;
return set_config_string_item(&netdev->upscript, value);
}
static int set_config_net_script_down(const char *key, const char *value,
struct lxc_conf *lxc_conf, void *data)
{
struct lxc_netdev *netdev = data;
if (lxc_config_value_empty(value))
return clr_config_net_script_down(key, lxc_conf, data);
if (!netdev)
return -1;
return set_config_string_item(&netdev->downscript, value);
}
static int add_hook(struct lxc_conf *lxc_conf, int which, char *hook)
{
struct lxc_list *hooklist;
hooklist = malloc(sizeof(*hooklist));
if (!hooklist) {
free(hook);
return -1;
}
hooklist->elem = hook;
lxc_list_add_tail(&lxc_conf->hooks[which], hooklist);
return 0;
}
static int set_config_seccomp_profile(const char *key, const char *value,
struct lxc_conf *lxc_conf, void *data)
{
return set_config_path_item(&lxc_conf->seccomp, value);
}
static int set_config_execute_cmd(const char *key, const char *value,
struct lxc_conf *lxc_conf, void *data)
{
return set_config_path_item(&lxc_conf->execute_cmd, value);
}
static int set_config_init_cmd(const char *key, const char *value,
struct lxc_conf *lxc_conf, void *data)
{
return set_config_path_item(&lxc_conf->init_cmd, value);
}
static int set_config_init_cwd(const char *key, const char *value,
struct lxc_conf *lxc_conf, void *data)
{
return set_config_path_item(&lxc_conf->init_cwd, value);
}
static int set_config_init_uid(const char *key, const char *value,
struct lxc_conf *lxc_conf, void *data)
{
unsigned int init_uid;
if (lxc_config_value_empty(value)) {
lxc_conf->init_uid = 0;
return 0;
}
if (lxc_safe_uint(value, &init_uid) < 0)
return -1;
lxc_conf->init_uid = init_uid;
return 0;
}
static int set_config_init_gid(const char *key, const char *value,
struct lxc_conf *lxc_conf, void *data)
{
unsigned int init_gid;
if (lxc_config_value_empty(value)) {
lxc_conf->init_gid = 0;
return 0;
}
if (lxc_safe_uint(value, &init_gid) < 0)
return -1;
lxc_conf->init_gid = init_gid;
return 0;
}
static int set_config_hooks(const char *key, const char *value,
struct lxc_conf *lxc_conf, void *data)
{
char *copy;
if (lxc_config_value_empty(value))
return lxc_clear_hooks(lxc_conf, key);
if (strcmp(key + 4, "hook") == 0) {
ERROR("lxc.hook must not have a value");
return -1;
}
copy = strdup(value);
if (!copy)
return -1;
if (strcmp(key + 9, "pre-start") == 0)
return add_hook(lxc_conf, LXCHOOK_PRESTART, copy);
else if (strcmp(key + 9, "start-host") == 0)
return add_hook(lxc_conf, LXCHOOK_START_HOST, copy);
else if (strcmp(key + 9, "pre-mount") == 0)
return add_hook(lxc_conf, LXCHOOK_PREMOUNT, copy);
else if (strcmp(key + 9, "autodev") == 0)
return add_hook(lxc_conf, LXCHOOK_AUTODEV, copy);
else if (strcmp(key + 9, "mount") == 0)
return add_hook(lxc_conf, LXCHOOK_MOUNT, copy);
else if (strcmp(key + 9, "start") == 0)
return add_hook(lxc_conf, LXCHOOK_START, copy);
else if (strcmp(key + 9, "stop") == 0)
return add_hook(lxc_conf, LXCHOOK_STOP, copy);
else if (strcmp(key + 9, "post-stop") == 0)
return add_hook(lxc_conf, LXCHOOK_POSTSTOP, copy);
else if (strcmp(key + 9, "clone") == 0)
return add_hook(lxc_conf, LXCHOOK_CLONE, copy);
else if (strcmp(key + 9, "destroy") == 0)
return add_hook(lxc_conf, LXCHOOK_DESTROY, copy);
free(copy);
return -1;
}
static int set_config_hooks_version(const char *key, const char *value,
struct lxc_conf *lxc_conf, void *data)
{
int ret;
unsigned int tmp;
if (lxc_config_value_empty(value))
return clr_config_hooks_version(key, lxc_conf, NULL);
ret = lxc_safe_uint(value, &tmp);
if (ret < 0)
return -1;
if (tmp > 1) {
ERROR("Invalid hook version specified. Currently only 0 "
"(legacy) and 1 are supported");
return -1;
}
lxc_conf->hooks_version = tmp;
return 0;
}
static int set_config_personality(const char *key, const char *value,
struct lxc_conf *lxc_conf, void *data)
{
signed long personality = lxc_config_parse_arch(value);
if (personality >= 0)
lxc_conf->personality = personality;
else
WARN("Unsupported personality \"%s\"", value);
return 0;
}
static int set_config_pty_max(const char *key, const char *value,
struct lxc_conf *lxc_conf, void *data)
{
int ret;
unsigned int max = 0;
if (lxc_config_value_empty(value)) {
lxc_conf->pty_max = 0;
return 0;
}
ret = lxc_safe_uint(value, &max);
if (ret < 0)
return -1;
lxc_conf->pty_max = max;
return 0;
}
/* We only need to check whether the first byte of the key after the lxc.start.
* prefix matches our expectations since they fortunately all start with a
* different letter. If anything was wrong with the key we would have already
* noticed when the callback was called.
*/
static int set_config_start(const char *key, const char *value,
struct lxc_conf *lxc_conf, void *data)
{
bool is_empty;
is_empty = lxc_config_value_empty(value);
if (*(key + 10) == 'a') { /* lxc.start.auto */
if (is_empty) {
lxc_conf->start_auto = 0;
return 0;
}
if (lxc_safe_uint(value, &lxc_conf->start_auto) < 0)
return -1;
if (lxc_conf->start_auto > 1)
return -1;
return 0;
} else if (*(key + 10) == 'd') { /* lxc.start.delay */
if (is_empty) {
lxc_conf->start_delay = 0;
return 0;
}
return lxc_safe_uint(value, &lxc_conf->start_delay);
} else if (*(key + 10) == 'o') { /* lxc.start.order */
if (is_empty) {
lxc_conf->start_order = 0;
return 0;
}
return lxc_safe_int(value, &lxc_conf->start_order);
}
return -1;
}
static int set_config_monitor(const char *key, const char *value,
struct lxc_conf *lxc_conf, void *data)
{
if (lxc_config_value_empty(value)) {
lxc_conf->monitor_unshare = 0;
return 0;
}
if (strcmp(key + 12, "unshare") == 0)
return lxc_safe_uint(value, &lxc_conf->monitor_unshare);
return -1;
}
static int set_config_monitor_signal_pdeath(const char *key, const char *value,
struct lxc_conf *lxc_conf, void *data)
{
if (lxc_config_value_empty(value)) {
lxc_conf->monitor_signal_pdeath = 0;
return 0;
}
if (strcmp(key + 12, "signal.pdeath") == 0) {