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systemd/src/network/networkd-manager.c
Yu Watanabe ca6bc7ce0d Merge pull request #20226 from yuwata/network-introduce-source-and-status 
network: introduce NetworkConfigSource and NetworkConfigState
2021-09-30 00:06:17 +09:00

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
#include <netinet/in.h>
#include <sys/socket.h>
#include <unistd.h>
#include <linux/if.h>
#include <linux/fib_rules.h>
#include <linux/nexthop.h>
#include <linux/nl80211.h>
#include "sd-daemon.h"
#include "sd-netlink.h"
#include "alloc-util.h"
#include "bus-error.h"
#include "bus-log-control-api.h"
#include "bus-polkit.h"
#include "bus-util.h"
#include "conf-parser.h"
#include "def.h"
#include "dns-domain.h"
#include "fd-util.h"
#include "fileio.h"
#include "firewall-util.h"
#include "fs-util.h"
#include "local-addresses.h"
#include "netlink-util.h"
#include "network-internal.h"
#include "networkd-address-pool.h"
#include "networkd-address.h"
#include "networkd-dhcp-server-bus.h"
#include "networkd-dhcp6.h"
#include "networkd-link-bus.h"
#include "networkd-manager-bus.h"
#include "networkd-manager.h"
#include "networkd-neighbor.h"
#include "networkd-network-bus.h"
#include "networkd-nexthop.h"
#include "networkd-queue.h"
#include "networkd-route.h"
#include "networkd-routing-policy-rule.h"
#include "networkd-speed-meter.h"
#include "networkd-state-file.h"
#include "networkd-wifi.h"
#include "ordered-set.h"
#include "path-lookup.h"
#include "path-util.h"
#include "selinux-util.h"
#include "set.h"
#include "signal-util.h"
#include "stat-util.h"
#include "strv.h"
#include "sysctl-util.h"
#include "tmpfile-util.h"
/* use 128 MB for receive socket kernel queue. */
#define RCVBUF_SIZE (128*1024*1024)
static int manager_reset_all(Manager *m) {
Link *link;
int r;
assert(m);
HASHMAP_FOREACH(link, m->links_by_index) {
r = link_reconfigure_after_sleep(link);
if (r < 0) {
log_link_warning_errno(link, r, "Failed to reconfigure interface: %m");
link_enter_failed(link);
}
}
return 0;
}
static int match_prepare_for_sleep(sd_bus_message *message, void *userdata, sd_bus_error *ret_error) {
Manager *m = userdata;
int b, r;
assert(message);
assert(m);
r = sd_bus_message_read(message, "b", &b);
if (r < 0) {
bus_log_parse_error(r);
return 0;
}
if (b)
return 0;
log_debug("Coming back from suspend, resetting all connections...");
(void) manager_reset_all(m);
return 0;
}
static int on_connected(sd_bus_message *message, void *userdata, sd_bus_error *ret_error) {
Manager *m = userdata;
assert(message);
assert(m);
/* Did we get a timezone or transient hostname from DHCP while D-Bus wasn't up yet? */
if (m->dynamic_hostname)
(void) manager_set_hostname(m, m->dynamic_hostname);
if (m->dynamic_timezone)
(void) manager_set_timezone(m, m->dynamic_timezone);
if (m->product_uuid_requested)
(void) manager_request_product_uuid(m);
return 0;
}
static int manager_connect_bus(Manager *m) {
int r;
assert(m);
assert(!m->bus);
r = bus_open_system_watch_bind_with_description(&m->bus, "bus-api-network");
if (r < 0)
return log_error_errno(r, "Failed to connect to bus: %m");
r = sd_bus_add_object_vtable(m->bus, NULL, "/org/freedesktop/network1", "org.freedesktop.network1.Manager", manager_vtable, m);
if (r < 0)
return log_error_errno(r, "Failed to add manager object vtable: %m");
r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/network1/link", "org.freedesktop.network1.Link", link_vtable, link_object_find, m);
if (r < 0)
return log_error_errno(r, "Failed to add link object vtable: %m");
r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/network1/link", "org.freedesktop.network1.DHCPServer", dhcp_server_vtable, link_object_find, m);
if (r < 0)
return log_error_errno(r, "Failed to add link object vtable: %m");
r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/network1/link", link_node_enumerator, m);
if (r < 0)
return log_error_errno(r, "Failed to add link enumerator: %m");
r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/network1/network", "org.freedesktop.network1.Network", network_vtable, network_object_find, m);
if (r < 0)
return log_error_errno(r, "Failed to add network object vtable: %m");
r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/network1/network", network_node_enumerator, m);
if (r < 0)
return log_error_errno(r, "Failed to add network enumerator: %m");
r = bus_log_control_api_register(m->bus);
if (r < 0)
return r;
r = sd_bus_request_name_async(m->bus, NULL, "org.freedesktop.network1", 0, NULL, NULL);
if (r < 0)
return log_error_errno(r, "Failed to request name: %m");
r = sd_bus_attach_event(m->bus, m->event, 0);
if (r < 0)
return log_error_errno(r, "Failed to attach bus to event loop: %m");
r = sd_bus_match_signal_async(
m->bus,
NULL,
"org.freedesktop.DBus.Local",
NULL,
"org.freedesktop.DBus.Local",
"Connected",
on_connected, NULL, m);
if (r < 0)
return log_error_errno(r, "Failed to request match on Connected signal: %m");
r = sd_bus_match_signal_async(
m->bus,
NULL,
"org.freedesktop.login1",
"/org/freedesktop/login1",
"org.freedesktop.login1.Manager",
"PrepareForSleep",
match_prepare_for_sleep, NULL, m);
if (r < 0)
log_warning_errno(r, "Failed to request match for PrepareForSleep, ignoring: %m");
return 0;
}
static int manager_connect_udev(Manager *m) {
int r;
/* udev does not initialize devices inside containers, so we rely on them being already
* initialized before entering the container. */
if (path_is_read_only_fs("/sys") > 0)
return 0;
r = sd_device_monitor_new(&m->device_monitor);
if (r < 0)
return log_error_errno(r, "Failed to initialize device monitor: %m");
r = sd_device_monitor_set_receive_buffer_size(m->device_monitor, RCVBUF_SIZE);
if (r < 0)
log_warning_errno(r, "Failed to increase buffer size for device monitor, ignoring: %m");
r = sd_device_monitor_filter_add_match_subsystem_devtype(m->device_monitor, "net", NULL);
if (r < 0)
return log_error_errno(r, "Could not add device monitor filter: %m");
r = sd_device_monitor_attach_event(m->device_monitor, m->event);
if (r < 0)
return log_error_errno(r, "Failed to attach event to device monitor: %m");
r = sd_device_monitor_start(m->device_monitor, manager_udev_process_link, m);
if (r < 0)
return log_error_errno(r, "Failed to start device monitor: %m");
return 0;
}
static int systemd_netlink_fd(void) {
int n, fd, rtnl_fd = -EINVAL;
n = sd_listen_fds(true);
if (n <= 0)
return -EINVAL;
for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + n; fd ++)
if (sd_is_socket(fd, AF_NETLINK, SOCK_RAW, -1) > 0) {
if (rtnl_fd >= 0)
return -EINVAL;
rtnl_fd = fd;
}
return rtnl_fd;
}
static int manager_connect_genl(Manager *m) {
int r;
assert(m);
r = sd_genl_socket_open(&m->genl);
if (r < 0)
return r;
r = sd_netlink_inc_rcvbuf(m->genl, RCVBUF_SIZE);
if (r < 0)
log_warning_errno(r, "Failed to increase receive buffer size for general netlink socket, ignoring: %m");
r = sd_netlink_attach_event(m->genl, m->event, 0);
if (r < 0)
return r;
r = genl_add_match(m->genl, NULL, NL80211_GENL_NAME, NL80211_MULTICAST_GROUP_CONFIG, 0,
&manager_genl_process_nl80211_config, NULL, m, "network-genl_process_nl80211_config");
if (r < 0 && r != -EOPNOTSUPP)
return r;
r = genl_add_match(m->genl, NULL, NL80211_GENL_NAME, NL80211_MULTICAST_GROUP_MLME, 0,
&manager_genl_process_nl80211_mlme, NULL, m, "network-genl_process_nl80211_mlme");
if (r < 0 && r != -EOPNOTSUPP)
return r;
return 0;
}
static int manager_connect_rtnl(Manager *m) {
int fd, r;
assert(m);
fd = systemd_netlink_fd();
if (fd < 0)
r = sd_netlink_open(&m->rtnl);
else
r = sd_netlink_open_fd(&m->rtnl, fd);
if (r < 0)
return r;
/* Bump receiver buffer, but only if we are not called via socket activation, as in that
* case systemd sets the receive buffer size for us, and the value in the .socket unit
* should take full effect. */
if (fd < 0) {
r = sd_netlink_inc_rcvbuf(m->rtnl, RCVBUF_SIZE);
if (r < 0)
log_warning_errno(r, "Failed to increase receive buffer size for rtnl socket, ignoring: %m");
}
r = sd_netlink_attach_event(m->rtnl, m->event, 0);
if (r < 0)
return r;
r = netlink_add_match(m->rtnl, NULL, RTM_NEWLINK, &manager_rtnl_process_link, NULL, m, "network-rtnl_process_link");
if (r < 0)
return r;
r = netlink_add_match(m->rtnl, NULL, RTM_DELLINK, &manager_rtnl_process_link, NULL, m, "network-rtnl_process_link");
if (r < 0)
return r;
r = netlink_add_match(m->rtnl, NULL, RTM_NEWADDR, &manager_rtnl_process_address, NULL, m, "network-rtnl_process_address");
if (r < 0)
return r;
r = netlink_add_match(m->rtnl, NULL, RTM_DELADDR, &manager_rtnl_process_address, NULL, m, "network-rtnl_process_address");
if (r < 0)
return r;
r = netlink_add_match(m->rtnl, NULL, RTM_NEWNEIGH, &manager_rtnl_process_neighbor, NULL, m, "network-rtnl_process_neighbor");
if (r < 0)
return r;
r = netlink_add_match(m->rtnl, NULL, RTM_DELNEIGH, &manager_rtnl_process_neighbor, NULL, m, "network-rtnl_process_neighbor");
if (r < 0)
return r;
r = netlink_add_match(m->rtnl, NULL, RTM_NEWROUTE, &manager_rtnl_process_route, NULL, m, "network-rtnl_process_route");
if (r < 0)
return r;
r = netlink_add_match(m->rtnl, NULL, RTM_DELROUTE, &manager_rtnl_process_route, NULL, m, "network-rtnl_process_route");
if (r < 0)
return r;
r = netlink_add_match(m->rtnl, NULL, RTM_NEWRULE, &manager_rtnl_process_rule, NULL, m, "network-rtnl_process_rule");
if (r < 0)
return r;
r = netlink_add_match(m->rtnl, NULL, RTM_DELRULE, &manager_rtnl_process_rule, NULL, m, "network-rtnl_process_rule");
if (r < 0)
return r;
r = netlink_add_match(m->rtnl, NULL, RTM_NEWNEXTHOP, &manager_rtnl_process_nexthop, NULL, m, "network-rtnl_process_nexthop");
if (r < 0)
return r;
r = netlink_add_match(m->rtnl, NULL, RTM_DELNEXTHOP, &manager_rtnl_process_nexthop, NULL, m, "network-rtnl_process_nexthop");
if (r < 0)
return r;
return 0;
}
static int manager_dirty_handler(sd_event_source *s, void *userdata) {
Manager *m = userdata;
Link *link;
int r;
assert(m);
if (m->dirty) {
r = manager_save(m);
if (r < 0)
log_warning_errno(r, "Failed to update state file %s, ignoring: %m", m->state_file);
}
SET_FOREACH(link, m->dirty_links) {
r = link_save_and_clean(link);
if (r < 0)
log_link_warning_errno(link, r, "Failed to update link state file %s, ignoring: %m", link->state_file);
}
return 1;
}
static int signal_terminate_callback(sd_event_source *s, const struct signalfd_siginfo *si, void *userdata) {
Manager *m = userdata;
assert(m);
m->restarting = false;
log_debug("Terminate operation initiated.");
return sd_event_exit(sd_event_source_get_event(s), 0);
}
static int signal_restart_callback(sd_event_source *s, const struct signalfd_siginfo *si, void *userdata) {
Manager *m = userdata;
assert(m);
m->restarting = true;
log_debug("Restart operation initiated.");
return sd_event_exit(sd_event_source_get_event(s), 0);
}
int manager_setup(Manager *m) {
int r;
assert(m);
r = sd_event_default(&m->event);
if (r < 0)
return r;
assert_se(sigprocmask_many(SIG_SETMASK, NULL, SIGINT, SIGTERM, SIGUSR2, -1) >= 0);
(void) sd_event_set_watchdog(m->event, true);
(void) sd_event_add_signal(m->event, NULL, SIGTERM, signal_terminate_callback, m);
(void) sd_event_add_signal(m->event, NULL, SIGINT, signal_terminate_callback, m);
(void) sd_event_add_signal(m->event, NULL, SIGUSR2, signal_restart_callback, m);
r = sd_event_add_post(m->event, NULL, manager_dirty_handler, m);
if (r < 0)
return r;
r = sd_event_add_post(m->event, NULL, manager_process_requests, m);
if (r < 0)
return r;
r = manager_connect_rtnl(m);
if (r < 0)
return r;
r = manager_connect_genl(m);
if (r < 0)
return r;
if (m->test_mode)
return 0;
r = manager_connect_bus(m);
if (r < 0)
return r;
r = manager_connect_udev(m);
if (r < 0)
return r;
r = sd_resolve_default(&m->resolve);
if (r < 0)
return r;
r = sd_resolve_attach_event(m->resolve, m->event, 0);
if (r < 0)
return r;
r = address_pool_setup_default(m);
if (r < 0)
return r;
m->state_file = strdup("/run/systemd/netif/state");
if (!m->state_file)
return -ENOMEM;
return 0;
}
int manager_new(Manager **ret, bool test_mode) {
_cleanup_(manager_freep) Manager *m = NULL;
m = new(Manager, 1);
if (!m)
return -ENOMEM;
*m = (Manager) {
.test_mode = test_mode,
.speed_meter_interval_usec = SPEED_METER_DEFAULT_TIME_INTERVAL,
.online_state = _LINK_ONLINE_STATE_INVALID,
.manage_foreign_routes = true,
.manage_foreign_rules = true,
.ethtool_fd = -1,
.dhcp_duid.type = DUID_TYPE_EN,
.dhcp6_duid.type = DUID_TYPE_EN,
.duid_product_uuid.type = DUID_TYPE_UUID,
};
*ret = TAKE_PTR(m);
return 0;
}
Manager* manager_free(Manager *m) {
Link *link;
if (!m)
return NULL;
free(m->state_file);
HASHMAP_FOREACH(link, m->links_by_index)
(void) link_stop_engines(link, true);
m->request_queue = ordered_set_free(m->request_queue);
m->dirty_links = set_free_with_destructor(m->dirty_links, link_unref);
m->links_by_name = hashmap_free(m->links_by_name);
m->links_by_hw_addr = hashmap_free(m->links_by_hw_addr);
m->links_by_index = hashmap_free_with_destructor(m->links_by_index, link_unref);
m->networks = ordered_hashmap_free_with_destructor(m->networks, network_unref);
m->netdevs = hashmap_free_with_destructor(m->netdevs, netdev_unref);
ordered_set_free_free(m->address_pools);
hashmap_free(m->route_table_names_by_number);
hashmap_free(m->route_table_numbers_by_name);
set_free(m->rules);
sd_netlink_unref(m->rtnl);
sd_netlink_unref(m->genl);
sd_resolve_unref(m->resolve);
/* reject (e.g. unreachable) type routes are managed by Manager, but may be referenced by a
* link. E.g., DHCP6 with prefix delegation creates unreachable routes, and they are referenced
* by the upstream link. And the links may be referenced by netlink slots. Hence, two
* set_free() must be called after the above sd_netlink_unref(). */
m->routes = set_free(m->routes);
m->routes_foreign = set_free(m->routes_foreign);
m->nexthops = set_free(m->nexthops);
m->nexthops_by_id = hashmap_free(m->nexthops_by_id);
sd_event_source_unref(m->speed_meter_event_source);
sd_event_unref(m->event);
sd_device_monitor_unref(m->device_monitor);
bus_verify_polkit_async_registry_free(m->polkit_registry);
sd_bus_flush_close_unref(m->bus);
free(m->dynamic_timezone);
free(m->dynamic_hostname);
safe_close(m->ethtool_fd);
m->fw_ctx = fw_ctx_free(m->fw_ctx);
return mfree(m);
}
int manager_start(Manager *m) {
Link *link;
int r;
assert(m);
r = manager_start_speed_meter(m);
if (r < 0)
return log_error_errno(r, "Failed to initialize speed meter: %m");
/* The dirty handler will deal with future serialization, but the first one
must be done explicitly. */
r = manager_save(m);
if (r < 0)
log_warning_errno(r, "Failed to update state file %s, ignoring: %m", m->state_file);
HASHMAP_FOREACH(link, m->links_by_index) {
r = link_save(link);
if (r < 0)
log_link_warning_errno(link, r, "Failed to update link state file %s, ignoring: %m", link->state_file);
}
return 0;
}
int manager_load_config(Manager *m) {
int r;
/* update timestamp */
paths_check_timestamp(NETWORK_DIRS, &m->network_dirs_ts_usec, true);
r = netdev_load(m, false);
if (r < 0)
return r;
r = network_load(m, &m->networks);
if (r < 0)
return r;
return 0;
}
bool manager_should_reload(Manager *m) {
return paths_check_timestamp(NETWORK_DIRS, &m->network_dirs_ts_usec, false);
}
static int manager_enumerate_internal(
Manager *m,
sd_netlink *nl,
sd_netlink_message *req,
int (*process)(sd_netlink *, sd_netlink_message *, Manager *)) {
_cleanup_(sd_netlink_message_unrefp) sd_netlink_message *reply = NULL;
int k, r;
assert(m);
assert(nl);
assert(req);
assert(process);
r = sd_netlink_message_request_dump(req, true);
if (r < 0)
return r;
r = sd_netlink_call(nl, req, 0, &reply);
if (r < 0)
return r;
for (sd_netlink_message *reply_one = reply; reply_one; reply_one = sd_netlink_message_next(reply_one)) {
m->enumerating = true;
k = process(nl, reply_one, m);
if (k < 0 && r >= 0)
r = k;
m->enumerating = false;
}
return r;
}
static int manager_enumerate_links(Manager *m) {
_cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL;
int r;
assert(m);
assert(m->rtnl);
r = sd_rtnl_message_new_link(m->rtnl, &req, RTM_GETLINK, 0);
if (r < 0)
return r;
return manager_enumerate_internal(m, m->rtnl, req, manager_rtnl_process_link);
}
static int manager_enumerate_addresses(Manager *m) {
_cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL;
int r;
assert(m);
assert(m->rtnl);
r = sd_rtnl_message_new_addr(m->rtnl, &req, RTM_GETADDR, 0, 0);
if (r < 0)
return r;
return manager_enumerate_internal(m, m->rtnl, req, manager_rtnl_process_address);
}
static int manager_enumerate_neighbors(Manager *m) {
_cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL;
int r;
assert(m);
assert(m->rtnl);
r = sd_rtnl_message_new_neigh(m->rtnl, &req, RTM_GETNEIGH, 0, AF_UNSPEC);
if (r < 0)
return r;
return manager_enumerate_internal(m, m->rtnl, req, manager_rtnl_process_neighbor);
}
static int manager_enumerate_routes(Manager *m) {
_cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL;
int r;
assert(m);
assert(m->rtnl);
if (!m->manage_foreign_routes)
return 0;
r = sd_rtnl_message_new_route(m->rtnl, &req, RTM_GETROUTE, 0, 0);
if (r < 0)
return r;
return manager_enumerate_internal(m, m->rtnl, req, manager_rtnl_process_route);
}
static int manager_enumerate_rules(Manager *m) {
_cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL;
int r;
assert(m);
assert(m->rtnl);
if (!m->manage_foreign_rules)
return 0;
r = sd_rtnl_message_new_routing_policy_rule(m->rtnl, &req, RTM_GETRULE, 0);
if (r < 0)
return r;
return manager_enumerate_internal(m, m->rtnl, req, manager_rtnl_process_rule);
}
static int manager_enumerate_nexthop(Manager *m) {
_cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL;
int r;
assert(m);
assert(m->rtnl);
r = sd_rtnl_message_new_nexthop(m->rtnl, &req, RTM_GETNEXTHOP, 0, 0);
if (r < 0)
return r;
return manager_enumerate_internal(m, m->rtnl, req, manager_rtnl_process_nexthop);
}
static int manager_enumerate_nl80211_config(Manager *m) {
_cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL;
int r;
assert(m);
assert(m->genl);
r = sd_genl_message_new(m->genl, NL80211_GENL_NAME, NL80211_CMD_GET_INTERFACE, &req);
if (r < 0)
return r;
return manager_enumerate_internal(m, m->genl, req, manager_genl_process_nl80211_config);
}
static int manager_enumerate_nl80211_mlme(Manager *m) {
Link *link;
int r;
assert(m);
assert(m->genl);
HASHMAP_FOREACH(link, m->links_by_index) {
_cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL;
if (link->wlan_iftype != NL80211_IFTYPE_STATION)
continue;
r = sd_genl_message_new(m->genl, NL80211_GENL_NAME, NL80211_CMD_GET_STATION, &req);
if (r < 0)
return r;
r = sd_netlink_message_append_u32(req, NL80211_ATTR_IFINDEX, link->ifindex);
if (r < 0)
return r;
r = manager_enumerate_internal(m, m->genl, req, manager_genl_process_nl80211_mlme);
if (r < 0)
return r;
}
return 0;
}
int manager_enumerate(Manager *m) {
int r;
r = manager_enumerate_links(m);
if (r < 0)
return log_error_errno(r, "Could not enumerate links: %m");
r = manager_enumerate_addresses(m);
if (r < 0)
return log_error_errno(r, "Could not enumerate addresses: %m");
r = manager_enumerate_neighbors(m);
if (r < 0)
return log_error_errno(r, "Could not enumerate neighbors: %m");
/* NextHop support is added in kernel v5.3 (65ee00a9409f751188a8cdc0988167858eb4a536),
* and older kernels return -EOPNOTSUPP, or -EINVAL if SELinux is enabled. */
r = manager_enumerate_nexthop(m);
if (r == -EOPNOTSUPP || (r == -EINVAL && mac_selinux_enforcing()))
log_debug_errno(r, "Could not enumerate nexthops, ignoring: %m");
else if (r < 0)
return log_error_errno(r, "Could not enumerate nexthops: %m");
r = manager_enumerate_routes(m);
if (r < 0)
return log_error_errno(r, "Could not enumerate routes: %m");
/* If kernel is built with CONFIG_FIB_RULES=n, it returns -EOPNOTSUPP. */
r = manager_enumerate_rules(m);
if (r == -EOPNOTSUPP)
log_debug_errno(r, "Could not enumerate routing policy rules, ignoring: %m");
else if (r < 0)
return log_error_errno(r, "Could not enumerate routing policy rules: %m");
r = manager_enumerate_nl80211_config(m);
if (r == -EOPNOTSUPP)
log_debug_errno(r, "Could not enumerate wireless LAN interfaces, ignoring: %m");
else if (r < 0)
return log_error_errno(r, "Could not enumerate wireless LAN interfaces: %m");
r = manager_enumerate_nl80211_mlme(m);
if (r == -EOPNOTSUPP)
log_debug_errno(r, "Could not enumerate wireless LAN stations, ignoring: %m");
else if (r < 0)
return log_error_errno(r, "Could not enumerate wireless LAN stations: %m");
return 0;
}
static int set_hostname_handler(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) {
const sd_bus_error *e;
int r;
assert(m);
e = sd_bus_message_get_error(m);
if (e) {
r = sd_bus_error_get_errno(e);
log_warning_errno(r, "Could not set hostname: %s", bus_error_message(e, r));
}
return 1;
}
int manager_set_hostname(Manager *m, const char *hostname) {
int r;
log_debug("Setting transient hostname: '%s'", strna(hostname));
r = free_and_strdup_warn(&m->dynamic_hostname, hostname);
if (r < 0)
return r;
if (sd_bus_is_ready(m->bus) <= 0) {
log_debug("Not connected to system bus, setting system hostname later.");
return 0;
}
r = sd_bus_call_method_async(
m->bus,
NULL,
"org.freedesktop.hostname1",
"/org/freedesktop/hostname1",
"org.freedesktop.hostname1",
"SetHostname",
set_hostname_handler,
m,
"sb",
hostname,
false);
if (r < 0)
return log_error_errno(r, "Could not set transient hostname: %m");
return 0;
}
static int set_timezone_handler(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) {
const sd_bus_error *e;
int r;
assert(m);
e = sd_bus_message_get_error(m);
if (e) {
r = sd_bus_error_get_errno(e);
log_warning_errno(r, "Could not set timezone: %s", bus_error_message(e, r));
}
return 1;
}
int manager_set_timezone(Manager *m, const char *tz) {
int r;
assert(m);
assert(tz);
log_debug("Setting system timezone: '%s'", tz);
r = free_and_strdup_warn(&m->dynamic_timezone, tz);
if (r < 0)
return r;
if (sd_bus_is_ready(m->bus) <= 0) {
log_debug("Not connected to system bus, setting system timezone later.");
return 0;
}
r = sd_bus_call_method_async(
m->bus,
NULL,
"org.freedesktop.timedate1",
"/org/freedesktop/timedate1",
"org.freedesktop.timedate1",
"SetTimezone",
set_timezone_handler,
m,
"sb",
tz,
false);
if (r < 0)
return log_error_errno(r, "Could not set timezone: %m");
return 0;
}
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