[PATCH 1/2] Do not try to remove the temp login file if already
renamed
write_selinux_string() would try to unlink the temporary file even after
it was renamed. Failure to unlink the file would not be fatal, but would
produce a confusing error message.
Also don't use "0" for the default fd number, that's reserved for
stdin.
Using -1 is safer.
[PATCH 2/2] Only create the SELinux login file if there are mappings
on the server
https://fedorahosted.org/sssd/ticket/1455
In case there are no rules on the IPA server, we must simply avoid generating
the login file. That would make us fall back to the system-wide default
defined in /etc/selinux/targeted/seusers.
The IPA default must be only used if there *are* rules on the server,
but none matches.