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path: root/src/libsystemd-network/sd-dhcp-lease.c
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Diffstat (limited to 'src/libsystemd-network/sd-dhcp-lease.c')
-rw-r--r--src/libsystemd-network/sd-dhcp-lease.c32
1 files changed, 31 insertions, 1 deletions
diff --git a/src/libsystemd-network/sd-dhcp-lease.c b/src/libsystemd-network/sd-dhcp-lease.c
index 722dd0a419..6bd9728377 100644
--- a/src/libsystemd-network/sd-dhcp-lease.c
+++ b/src/libsystemd-network/sd-dhcp-lease.c
@@ -126,6 +126,15 @@ int sd_dhcp_lease_get_netmask(sd_dhcp_lease *lease, struct in_addr *addr) {
return 0;
}
+int sd_dhcp_lease_get_server_identifier(sd_dhcp_lease *lease, struct in_addr *addr) {
+ assert_return(lease, -EINVAL);
+ assert_return(addr, -EINVAL);
+
+ addr->s_addr = lease->server_address;
+
+ return 0;
+}
+
sd_dhcp_lease *sd_dhcp_lease_ref(sd_dhcp_lease *lease) {
if (lease)
assert_se(REFCNT_INC(lease->n_ref) >= 2);
@@ -329,6 +338,18 @@ int dhcp_lease_save(sd_dhcp_lease *lease, const char *lease_file) {
fprintf(f,
"NETMASK=%s\n", string);
+ r = sd_dhcp_lease_get_server_identifier(lease, &address);
+ if (r >= 0) {
+ string = inet_ntop(AF_INET, &address, buf, INET_ADDRSTRLEN);
+ if (!string) {
+ r = -errno;
+ goto finish;
+ }
+
+ fprintf(f,
+ "SERVER_ADDRESS=%s\n", string);
+ }
+
r = sd_dhcp_lease_get_mtu(lease, &mtu);
if (r >= 0)
fprintf(f, "MTU=%" PRIu16 "\n", mtu);
@@ -367,7 +388,7 @@ finish:
int dhcp_lease_load(const char *lease_file, sd_dhcp_lease **ret) {
_cleanup_dhcp_lease_unref_ sd_dhcp_lease *lease = NULL;
_cleanup_free_ char *address = NULL, *router = NULL, *netmask = NULL,
- *mtu = NULL;
+ *server_address = NULL, *mtu = NULL;
struct in_addr addr;
int r;
@@ -382,6 +403,7 @@ int dhcp_lease_load(const char *lease_file, sd_dhcp_lease **ret) {
"ADDRESS", &address,
"ROUTER", &router,
"NETMASK", &netmask,
+ "SERVER_IDENTIFIER", &server_address,
"MTU", &mtu,
"DOMAINNAME", &lease->domainname,
"HOSTNAME", &lease->hostname,
@@ -413,6 +435,14 @@ int dhcp_lease_load(const char *lease_file, sd_dhcp_lease **ret) {
lease->subnet_mask = addr.s_addr;
+ if (server_address) {
+ r = inet_pton(AF_INET, server_address, &addr);
+ if (r < 0)
+ return r;
+
+ lease->server_address = addr.s_addr;
+ }
+
if (mtu) {
uint16_t u;
if (sscanf(mtu, "%" SCNu16, &u) > 0)