s4:server: avoid calling into nss_winbind from within 'samba'
The most important part is that the 'winbind_server' doesn't
recurse into itself. This could happen if the krb5 libraries
call getlogin().
As we may run in single process mode, we need to set
_NO_WINBINDD=1 everywhere, the only exception is the forked
'smbd'.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Autobuild-User(master): Stefan Metzmacher <metze@samba.org>
Autobuild-Date(master): Wed Jul 10 23:18:06 CEST 2013 on sn-devel-104
(cherry picked from commit
596b51c666e549fb518d92931d8837922154a2fe)
The last 4 patches address bug #9820 - crash of winbind after "ls -l
/usr/local/samba/var/locks/sysvol".