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Diffstat (limited to 'src/network/networkd-link.c')
-rw-r--r--src/network/networkd-link.c244
1 files changed, 236 insertions, 8 deletions
diff --git a/src/network/networkd-link.c b/src/network/networkd-link.c
index cc9dc393c6..ff693ed0fd 100644
--- a/src/network/networkd-link.c
+++ b/src/network/networkd-link.c
@@ -29,7 +29,10 @@
#include "socket-util.h"
#include "bus-util.h"
#include "udev-util.h"
+#include "netlink-util.h"
+#include "dhcp-lease-internal.h"
#include "network-internal.h"
+
#include "networkd-link.h"
#include "networkd-netdev.h"
@@ -613,6 +616,96 @@ static int address_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userda
return 1;
}
+static int link_push_dns_to_dhcp_server(Link *link, sd_dhcp_server *s) {
+ _cleanup_free_ struct in_addr *addresses = NULL;
+ size_t n_addresses = 0, n_allocated = 0;
+ char **a;
+
+ log_debug("Copying DNS server information from %s", link->ifname);
+
+ if (!link->network)
+ return 0;
+
+ STRV_FOREACH(a, link->network->dns) {
+ struct in_addr ia;
+
+ /* Only look for IPv4 addresses */
+ if (inet_pton(AF_INET, *a, &ia) <= 0)
+ continue;
+
+ if (!GREEDY_REALLOC(addresses, n_allocated, n_addresses + 1))
+ return log_oom();
+
+ addresses[n_addresses++] = ia;
+ }
+
+ if (link->network->dhcp_dns &&
+ link->dhcp_lease) {
+ const struct in_addr *da = NULL;
+ int n;
+
+ n = sd_dhcp_lease_get_dns(link->dhcp_lease, &da);
+ if (n > 0) {
+
+ if (!GREEDY_REALLOC(addresses, n_allocated, n_addresses + n))
+ return log_oom();
+
+ memcpy(addresses + n_addresses, da, n * sizeof(struct in_addr));
+ n_addresses += n;
+ }
+ }
+
+ if (n_addresses <= 0)
+ return 0;
+
+ return sd_dhcp_server_set_dns(s, addresses, n_addresses);
+}
+
+static int link_push_ntp_to_dhcp_server(Link *link, sd_dhcp_server *s) {
+ _cleanup_free_ struct in_addr *addresses = NULL;
+ size_t n_addresses = 0, n_allocated = 0;
+ char **a;
+
+ if (!link->network)
+ return 0;
+
+ log_debug("Copying NTP server information from %s", link->ifname);
+
+ STRV_FOREACH(a, link->network->ntp) {
+ struct in_addr ia;
+
+ /* Only look for IPv4 addresses */
+ if (inet_pton(AF_INET, *a, &ia) <= 0)
+ continue;
+
+ if (!GREEDY_REALLOC(addresses, n_allocated, n_addresses + 1))
+ return log_oom();
+
+ addresses[n_addresses++] = ia;
+ }
+
+ if (link->network->dhcp_ntp &&
+ link->dhcp_lease) {
+ const struct in_addr *da = NULL;
+ int n;
+
+ n = sd_dhcp_lease_get_ntp(link->dhcp_lease, &da);
+ if (n > 0) {
+
+ if (!GREEDY_REALLOC(addresses, n_allocated, n_addresses + n))
+ return log_oom();
+
+ memcpy(addresses + n_addresses, da, n * sizeof(struct in_addr));
+ n_addresses += n;
+ }
+ }
+
+ if (n_addresses <= 0)
+ return 0;
+
+ return sd_dhcp_server_set_ntp(s, addresses, n_addresses);
+}
+
static int link_enter_set_addresses(Link *link) {
Address *ad;
int r;
@@ -639,6 +732,8 @@ static int link_enter_set_addresses(Link *link) {
if (link_dhcp4_server_enabled(link)) {
struct in_addr pool_start;
Address *address;
+ Link *uplink = NULL;
+ bool acquired_uplink = false;
address = link_find_dhcp_server_address(link);
if (!address) {
@@ -672,6 +767,81 @@ static int link_enter_set_addresses(Link *link) {
return r;
*/
+ if (link->network->dhcp_server_max_lease_time_usec > 0) {
+ r = sd_dhcp_server_set_max_lease_time(
+ link->dhcp_server,
+ DIV_ROUND_UP(link->network->dhcp_server_max_lease_time_usec, USEC_PER_SEC));
+ if (r < 0)
+ return r;
+ }
+
+ if (link->network->dhcp_server_default_lease_time_usec > 0) {
+ r = sd_dhcp_server_set_default_lease_time(
+ link->dhcp_server,
+ DIV_ROUND_UP(link->network->dhcp_server_default_lease_time_usec, USEC_PER_SEC));
+ if (r < 0)
+ return r;
+ }
+
+ if (link->network->dhcp_server_emit_dns) {
+
+ if (link->network->n_dhcp_server_dns > 0)
+ r = sd_dhcp_server_set_dns(link->dhcp_server, link->network->dhcp_server_dns, link->network->n_dhcp_server_dns);
+ else {
+ uplink = manager_find_uplink(link->manager, link);
+ acquired_uplink = true;
+
+ if (!uplink) {
+ log_link_debug(link, "Not emitting DNS server information on link, couldn't find suitable uplink.");
+ r = 0;
+ } else
+ r = link_push_dns_to_dhcp_server(uplink, link->dhcp_server);
+ }
+ if (r < 0)
+ log_link_warning_errno(link, r, "Failed to set DNS server for DHCP server, ignoring: %m");
+ }
+
+
+ if (link->network->dhcp_server_emit_ntp) {
+
+ if (link->network->n_dhcp_server_ntp > 0)
+ r = sd_dhcp_server_set_ntp(link->dhcp_server, link->network->dhcp_server_ntp, link->network->n_dhcp_server_ntp);
+ else {
+ if (!acquired_uplink)
+ uplink = manager_find_uplink(link->manager, link);
+
+ if (!uplink) {
+ log_link_debug(link, "Not emitting NTP server information on link, couldn't find suitable uplink.");
+ r = 0;
+ } else
+ r = link_push_ntp_to_dhcp_server(uplink, link->dhcp_server);
+
+ }
+ if (r < 0)
+ log_link_warning_errno(link, r, "Failed to set NTP server for DHCP server, ignoring: %m");
+ }
+
+ if (link->network->dhcp_server_emit_timezone) {
+ _cleanup_free_ char *buffer = NULL;
+ const char *tz;
+
+ if (link->network->dhcp_server_timezone)
+ tz = link->network->dhcp_server_timezone;
+ else {
+ r = get_timezone(&buffer);
+ if (r < 0)
+ log_warning_errno(r, "Failed to determine timezone: %m");
+ else
+ tz = buffer;
+ }
+
+ if (tz) {
+ r = sd_dhcp_server_set_timezone(link->dhcp_server, tz);
+ if (r < 0)
+ return r;
+ }
+ }
+
r = sd_dhcp_server_start(link->dhcp_server);
if (r < 0) {
log_link_warning_errno(link, r, "Could not start DHCPv4 server instance: %m");
@@ -743,7 +913,7 @@ static int link_set_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userd
static int set_hostname_handler(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) {
_cleanup_link_unref_ Link *link = userdata;
- int r;
+ const sd_bus_error *e;
assert(m);
assert(link);
@@ -751,21 +921,20 @@ static int set_hostname_handler(sd_bus_message *m, void *userdata, sd_bus_error
if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER))
return 1;
- r = sd_bus_message_get_errno(m);
- if (r > 0)
- log_link_warning_errno(link, r, "Could not set hostname: %m");
+ e = sd_bus_message_get_error(m);
+ if (e)
+ log_link_warning_errno(link, sd_bus_error_get_errno(e), "Could not set hostname: %s", e->message);
return 1;
}
int link_set_hostname(Link *link, const char *hostname) {
- int r = 0;
+ int r;
assert(link);
assert(link->manager);
- assert(hostname);
- log_link_debug(link, "Setting transient hostname: '%s'", hostname);
+ log_link_debug(link, "Setting transient hostname: '%s'", strna(hostname));
if (!link->manager->bus) {
/* TODO: replace by assert when we can rely on kdbus */
@@ -794,6 +963,57 @@ int link_set_hostname(Link *link, const char *hostname) {
return 0;
}
+static int set_timezone_handler(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) {
+ _cleanup_link_unref_ Link *link = userdata;
+ const sd_bus_error *e;
+
+ assert(m);
+ assert(link);
+
+ if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER))
+ return 1;
+
+ e = sd_bus_message_get_error(m);
+ if (e)
+ log_link_warning_errno(link, sd_bus_error_get_errno(e), "Could not set timezone: %s", e->message);
+
+ return 1;
+}
+
+int link_set_timezone(Link *link, const char *timezone) {
+ int r;
+
+ assert(link);
+ assert(link->manager);
+ assert(timezone);
+
+ log_link_debug(link, "Setting system timezone: '%s'", timezone);
+
+ if (!link->manager->bus) {
+ log_link_info(link, "Not connected to system bus, ignoring timezone.");
+ return 0;
+ }
+
+ r = sd_bus_call_method_async(
+ link->manager->bus,
+ NULL,
+ "org.freedesktop.timedate1",
+ "/org/freedesktop/timedate1",
+ "org.freedesktop.timedate1",
+ "SetTimezone",
+ set_timezone_handler,
+ link,
+ "sb",
+ timezone,
+ false);
+ if (r < 0)
+ return log_link_error_errno(link, r, "Could not set timezone: %m");
+
+ link_ref(link);
+
+ return 0;
+}
+
static int set_mtu_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) {
_cleanup_link_unref_ Link *link = userdata;
int r;
@@ -2414,9 +2634,17 @@ int link_save(Link *link) {
}
if (link->dhcp_lease) {
+ const char *tz = NULL;
+
+ r = sd_dhcp_lease_get_timezone(link->dhcp_lease, &tz);
+ if (r >= 0)
+ fprintf(f, "TIMEZONE=%s\n", tz);
+ }
+
+ if (link->dhcp_lease) {
assert(link->network);
- r = sd_dhcp_lease_save(link->dhcp_lease, link->lease_file);
+ r = dhcp_lease_save(link->dhcp_lease, link->lease_file);
if (r < 0)
goto fail;
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-07-24 12:20:00 +0000