[TriLUG] C & sockets programming question

[Charles Fischer]

I am patching a C program that opens a TCP/IP socket and listens.  When 
"accept" returns a connecting socket, the program calls a read routine that 
does some checking.  It would be nice if this read routine knew the 
interface's name (ie, lo, eth0 or eth1).  Does anybody know how to get the 
interface's name from the socket ID (file ID)?

Thanks
Charles Fischer