[U-Boot] [PATCH 1/3] serial-uclass.c: Copy at most sdev.name - 1 characters into the buffer

[Tom Rini <trini@konsulko.com>]

On Tue, Dec 08, 2015 at 12:35:18PM -0700, Simon Glass wrote:
> On 7 December 2015 at 20:26, Tom Rini <trini@konsulko.com> wrote:
> > Coverity notes that we do not ensure a NULL terminated string here as we
> > could fill the entire buffer with our strncpy call.  Fix this by
> > subtracting one.
> >
> > Reported-by: Coverity (CID 131093)
> > Cc: Simon Glass <sjg@chromium.org>
> > Signed-off-by: Tom Rini <trini@konsulko.com>
> > ---
> >  drivers/serial/serial-uclass.c |    2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> Reviewed-by: Simon Glass <sjg@chromium.org>
> 
> >
> > diff --git a/drivers/serial/serial-uclass.c b/drivers/serial/serial-uclass.c
> > index 842f78b..2ef82b0 100644
> > --- a/drivers/serial/serial-uclass.c
> > +++ b/drivers/serial/serial-uclass.c
> > @@ -324,7 +324,7 @@ static int serial_post_probe(struct udevice *dev)
> >                 return 0;
> >         memset(&sdev, '\0', sizeof(sdev));
> >
> > -       strncpy(sdev.name, dev->name, sizeof(sdev.name));
> > +       strncpy(sdev.name, dev->name, sizeof(sdev.name) - 1);
> 
> There is also strlcpy() if you want it.

Ah good.  Yeah, I think I should v2 this patch and use strlcpy as
there's going to be many more of these I bet to come.

-- 
Tom
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