The Function body can't be found in the DHCP ,please help me to solve the puzzle!

[周景]

Hi dhcp-users！
       I am the rookie in the network programing, I want to porting the dhcp relay on my device, so I download the dhcpd 3.0.4 and read the code of it. But I found that some functions don't have the body,I don't know how it works. I search for libc and linux,and read the makefile of the dhcp ,but still don't find anything about it.Please help me to solve this puzzle.Thanks! 

		The functions list below:(can't find how it works in the dhcp code )
		interface_allocate
		interface_dereference
		interface_reference
		
		The type isc_result_t is not typedef.(I think it is the int .)

	





 				



　Mike Zhou

　　　　zjzn at hitronwh.com

　　　　　　2006-09-15