dosmode: fix FSCTL_SET_SPARSE request validation
Check that FSCTL_SET_SPARSE requests does not refer to directories. Also
reject such requests when issued over IPC or printer share connections.
Bug: https://bugzilla.samba.org/show_bug.cgi?id=10787
Signed-off-by: David Disseldorp <ddiss@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Thu Aug 28 04:22:37 CEST 2014 on sn-devel-104
(cherry picked from commit
0751495b1327d002b79482632b7c590cae6e3f9d)