The implementation of strscpy() is more robust and safer.

That's now the recommended way to copy NUL terminated strings.
Signed-off-by: NMauro Carvalho Chehab <mchehab+samsung@kernel.org>
Reviewed-by: NKees Cook <keescook@chromium.org>
Acked-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab+samsung@kernel.org>