sd-dhcp: use FIONREAD to get correct size of incoming DHCP packet

[elogind.git] / src / libsystemd-dhcp / dhcp-packet.c

diff --git a/src/libsystemd-dhcp/dhcp-packet.c b/src/libsystemd-dhcp/dhcp-packet.c
index 7c209fa658b13022fb927efb713c93628d4c0c97..8f9ec43c43d2891f57c1270362c2305fbcc9ee92 100644 (file)
--- a/src/libsystemd-dhcp/dhcp-packet.c
+++ b/src/libsystemd-dhcp/dhcp-packet.c
@@ -119,6 +119,8 @@ void dhcp_packet_append_ip_headers(DHCPPacket *packet, uint16_t len) {
 int dhcp_packet_verify_headers(DHCPPacket *packet, size_t len) {
         size_t hdrlen;
 
+        assert(packet);
+
         /* IP */
 
         if (len < DHCP_IP_SIZE) {