Propagte correct error values instead of returning -1 which just means
-EPERM ("Permission denied")
Signed-off-by: NDaniel Mack <daniel@caiaq.de>
Signed-off-by: NDouglas Schilling Landgraf <dougsland@redhat.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>