shaba/systemd-stable
1
1
Fork 0
mirror of https://github.com/systemd/systemd-stable.git synced 2024-12-22 13:33:56 +03:00
Code

dhcp: fix comparison with previous lease

Browse Source 
Follow-up for f8862395e8.

Fixes #12816.
This commit is contained in:
Yu Watanabe 2019-06-18 11:18:46 +09:00 committed by Lennart Poettering
parent 0ef67b7376
commit 3d9f670783
1 changed files with 20 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

25
src/libsystemd-network/sd-dhcp-client.c
View File

@ -1385,6 +1385,23 @@ static int client_handle_forcerenew(sd_dhcp_client *client, DHCPMessage *force,
return 0;
}
static bool lease_equal(const sd_dhcp_lease *a, const sd_dhcp_lease *b) {
if (a->address != b->address)
return false;
if (a->subnet_mask != b->subnet_mask)
return false;
if (a->router_size != b->router_size)
return false;
for (size_t i = 0; i < a->router_size; i++)
if (a->router[i].s_addr != b->router[i].s_addr)
return false;
return true;
}
static int client_handle_ack(sd_dhcp_client *client, DHCPMessage *ack, size_t len) {
_cleanup_(sd_dhcp_lease_unrefp) sd_dhcp_lease *lease = NULL;
_cleanup_free_ char *error_message = NULL;
@ -1437,12 +1454,10 @@ static int client_handle_ack(sd_dhcp_client *client, DHCPMessage *ack, size_t le
r = SD_DHCP_CLIENT_EVENT_IP_ACQUIRE;
if (client->lease) {
if (client->lease->address != lease->address ||
client->lease->subnet_mask != lease->subnet_mask ||
client->lease->router != lease->router) {
r = SD_DHCP_CLIENT_EVENT_IP_CHANGE;
} else
if (lease_equal(client->lease, lease))
r = SD_DHCP_CLIENT_EVENT_RENEW;
else
r = SD_DHCP_CLIENT_EVENT_IP_CHANGE;
client->lease = sd_dhcp_lease_unref(client->lease);
}