Re: [PATCH] ath10k: replace deprecated strncpy with strtomem_pad

From: Kees Cook
Date: Tue Oct 24 2023 - 19:41:02 EST


On Tue, Oct 24, 2023 at 04:25:35PM -0700, Jeff Johnson wrote:
> On 10/24/2023 2:43 PM, Kees Cook wrote:
> > On Tue, Oct 24, 2023 at 07:11:51AM -0700, Jeff Johnson wrote:
> > > On 10/24/2023 6:03 AM, Kalle Valo wrote:
> > > > What about using just memcpy() to make it clear it's not really a proper
> > > > string:
> > > >
> > > > arvif->u.ap.ssid_len = 4;
> > > > memcpy(arvif->u.ap.ssid, "mesh", arvif->u.ap.ssid_len);
> > > >
> > >
> > > In the "changed & BSS_CHANGED_SSID" case that comes soon after this we just
> > > set the length and use memcpy without clearing the rest of the buffer, so
> > > doing the same here, as you suggest, would be consistent.
> >
> > Ah, please ignore my other email asking about memcpy safety -- I'm
> > reading threads backwards. :)
> >
> And I'm replying without first reading through my mail queue

*high five* :)

--
Kees Cook