Re: [Linux v5.17.9] -Wdeprecated-declarations warnings with LLVM-14 and OpenSSL v3.0.x

From: Sedat Dilek <sedat.dilek@gmail.com>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Kees Cook <keescook@chromium.org>,
	keyrings@vger.kernel.org,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Salvatore Bonaccorso <carnil@debian.org>,
	David Woodhouse <dwmw2@infradead.org>,
	David Howells <dhowells@redhat.com>,
	Tasmiya Nalatwad <tasmiya@linux.vnet.ibm.com>,
	James Bottomley <James.Bottomley@hansenpartnership.com>
Subject: Re: [Linux v5.17.9] -Wdeprecated-declarations warnings with LLVM-14 and OpenSSL v3.0.x
Date: Thu, 9 Jun 2022 21:19:20 +0200	[thread overview]
Message-ID: <CA+icZUUma1B8KFWF-ed9sjXH4QpCRZ+B2pON3uAFkTUs77tMzw@mail.gmail.com> (raw)
In-Reply-To: <CAHk-=wiOrXUr0wqHL+hfkzGg_+b7UvtLeB=59KsX8W939bTY-A@mail.gmail.com>

On Thu, Jun 9, 2022 at 9:05 PM Linus Torvalds
<torvalds@linux-foundation.org> wrote:
>
> On Thu, Jun 9, 2022 at 11:41 AM Sedat Dilek <sedat.dilek@gmail.com> wrote:
> >
> > Why go back and forth... do it like Alexander the Great and the Gordian knot.
> >
> > Sword - Swash - Done.
> >
> > commit 6bfb56e93bcef41859c2d5ab234ffd80b691be35
> > "cert host tools: Stop complaining about deprecated OpenSSL functions"
>
> Well, it's not like that is the *right* fix.
>
> But I think for now, the answer is "leave it like that until we can
> just get rid of the ENGINE API entirely".
>
> I absolutely detest the "deprecation" warnings. We used to do that in
> the kernel too, and it was a complete disaster. The warnings are very
> noisy, and nobody ever cares about them, so it's simply not worth it.
>
> So we deprecated "__deprecated" in the kernel itself:
>
>   771c035372a0 deprecate the '__deprecated' attribute warnings
> entirely and for good
>
> and I don't think we should care about it when it comes to OpenSSL either.
>
> Eventually, that deprecated interface will go away entirely, and by
> then we hopefully don't care about really old openssl implementations
> and will have gotten rid of the uses.
>
> But for now, I think putting our head in the sand is actually the
> _better_ model rather than fighting some battle over old vs new
> libraries.
>
> Because sometimes, if you ignore a problem, it really does just go away.
>

To be honest: I like your approach, Linus.
Very pragma-tic.
That's why you use pragma's in your patch :-).

I invested too much of my lifetime in making things work "correctly".
And yes, it's post-rc1...

Most of the apps in the Debian world passed the OpenSSL-v3 transition.

-Sedat-

[0] https://www.youtube.com/watch?v=mVvr6PKUoEs
[1] https://release.debian.org/transitions/html/auto-openssl.html