[rfc][icedtea7] Handle alternative Kerberos credential cache locations

[Andrew Haley]

On 08/13/2013 11:07 PM, Elliott Baron wrote:
> Kerberos 1.11 introduced a new configuration variable to override the 
> default location of the credential cache at build time. Fedora 18 and up 
> have used this new configuration variable to define an alternate default 
> cache location (/run/user/$UID/krb5cc/tkt). This bug was initially 
> reported against Fedora [1].
> 
> On Linux and Solaris systems, FileCredentialsCache.getDefaultCacheName() 
> defaults to the previously hard-coded location (/tmp/krb5cc_$UID). This 
> location will be incorrect if Kerberos was built with an alternative 
> credential cache location set. Since this credential cache location can 
> be arbitrary, we need to query the Kerberos API for the correct 
> location. This patch implements this query using a new JNI call, which 
> adds a dependency on libkrb5 for Linux and Solaris systems.
> 
> This patch was prepared against icedtea7-forest/jdk, changeset afaedb56b499.

Is this really an IcedTea-specific bug?

Andrew.