Re: [PATCH 5/6] lib: Fix function documentation for strncpy_from_user

[Kees Cook]

On Thu, Feb 21, 2019 at 12:27 PM Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> wrote:
>
> Hi Kees,
>
> On Wed, 20 Feb 2019 22:02:32 -0800 Kees Cook <keescook@xxxxxxxxxxxx> wrote:
> >
> > What I can't quite figure out yet is how to find a way for sfr to flag
> > newly added users of strcpy, strncpy, and strlcpy. We might need to
> > bring back __deprecated, but hide it behind a W=linux-next flag or
> > something crazy. Stephen, in your builds you're already injecting
> > -Wimplicit-fallthrough: do you do W=1 or anything like that? If not, I
> > think we need some W= setting for your linux-next builds that generate
> > the maintainer-nag warnings...
>
> I just have a set of compiler flags that my build scripts explicitly
> enable by setting KCFLAGS.

Okay, so you could include some -D option to enable it. I'll see if I
can cook something up.

-- 
Kees Cook