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sd-dhcp-client/networkd: add transient hostname support

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This commit is contained in:
Tom Gundersen
2014-01-16 20:32:08 +01:00
parent 6fc7349894
commit 1346b1f038
10 changed files with 132 additions and 0 deletions
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src/libsystemd/sd-dhcp-client.c
+36
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@@ -43,6 +43,7 @@ struct DHCPLease {
be32_t router;
struct in_addr **dns;
uint16_t mtu;
char *hostname;
};
typedef struct DHCPLease DHCPLease;
@@ -241,6 +242,33 @@ int sd_dhcp_client_get_dns(sd_dhcp_client *client, struct in_addr ***addr)
return 0;
}
int sd_dhcp_client_get_hostname(sd_dhcp_client *client, const char **hostname)
{
assert_return(client, -EINVAL);
assert_return(hostname, -EINVAL);
switch (client->state) {
case DHCP_STATE_INIT:
case DHCP_STATE_SELECTING:
case DHCP_STATE_INIT_REBOOT:
case DHCP_STATE_REBOOTING:
case DHCP_STATE_REQUESTING:
return -EADDRNOTAVAIL;
case DHCP_STATE_BOUND:
case DHCP_STATE_RENEWING:
case DHCP_STATE_REBINDING:
if (client->lease->hostname)
*hostname = client->lease->hostname;
else
return -ENOENT;
break;
}
return 0;
}
int sd_dhcp_client_prefixlen(const struct in_addr *addr)
{
int len = 0;
@@ -829,6 +857,14 @@ static int client_parse_offer(uint8_t code, uint8_t len, const uint8_t *option,
break;
case DHCP_OPTION_HOST_NAME:
if (len >= 1) {
free(lease->hostname);
lease->hostname = strndup((const char *)option, len);
}
break;
case DHCP_OPTION_RENEWAL_T1_TIME:
if (len == 4) {
memcpy(&val, option, 4);