Code Review 7024560: InetAddress.getLocalHost().getHostName() returns localhost for hostnames of length HOST_NAME_MAX

[Chris Hegarty]

Alan, Michael,

In Java_java_net_Inet(4|6)AddressImpl_getLocalHostName JVM_GetHostName, 
a.k.a gethostname, is returning ENAMETOOLONG. Then falling back to use 
"localhost", the assumption was that failure would only happen when 
something went wrong, maybe networking is not setup.

It appears that on many Linux variations the given buffer length should 
include space for the null terminator. Our given buffers already account 
for this, just need to pass down the correct length to gethostname.

http://cr.openjdk.java.net/~chegar/7024560/webrev.00/webrev/

-Chris.