linux-kernel - Re: [PATCH v2 1/1] sign-file: Do not attempt to use the ENGINE

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Message-ID: <YoCoySEUSzu9zthg@eldamar.lan>
Date:   Sun, 15 May 2022 09:16:25 +0200
From:   Salvatore Bonaccorso <carnil@...ian.org>
To:     Kees Cook <keescook@...omium.org>
Cc:     Lee Jones <lee.jones@...aro.org>,
        David Howells <dhowells@...hat.com>,
        David Woodhouse <dwmw2@...radead.org>,
        keyrings@...r.kernel.org, Adam Langley <agl@...gle.com>,
        linux-kernel@...r.kernel.org, Eric Biggers <ebiggers@...nel.org>
Subject: Re: [PATCH v2 1/1] sign-file: Do not attempt to use the ENGINE_* API
 if it's not available

Hi,

On Thu, Mar 10, 2022 at 08:51:56AM -0800, Kees Cook wrote:
> On Tue, Mar 08, 2022 at 10:31:11AM +0000, Lee Jones wrote:
> > OpenSSL's ENGINE API is deprecated in OpenSSL v3.0.
> >
> > Use OPENSSL_NO_ENGINE to ensure the ENGINE API is only used if it is
> > present.  This will safeguard against compile errors when using SSL
> > implementations which lack support for this deprecated API.
> 
> On Fedora rawhide, I'm still seeing a bunch of warnings:
> 
> scripts/sign-file.c: In function 'display_openssl_errors':
> scripts/sign-file.c:89:9: warning: 'ERR_get_error_line' is deprecated: Since OpenSSL 3.0 [-Wdeprecat
> ed-declarations]
>    89 |         while ((e = ERR_get_error_line(&file, &line))) {
>       |         ^~~~~
> In file included from scripts/sign-file.c:29:
> /usr/include/openssl/err.h:411:15: note: declared here
>   411 | unsigned long ERR_get_error_line(const char **file, int *line);
>       |               ^~~~~~~~~~~~~~~~~~
> scripts/sign-file.c: In function 'drain_openssl_errors':
> scripts/sign-file.c:102:9: warning: 'ERR_get_error_line' is deprecated: Since OpenSSL 3.0 [-Wdepreca
> ted-declarations]
>   102 |         while (ERR_get_error_line(&file, &line)) {}
>       |         ^~~~~
> /usr/include/openssl/err.h:411:15: note: declared here
>   411 | unsigned long ERR_get_error_line(const char **file, int *line);
>       |               ^~~~~~~~~~~~~~~~~~

FWIW, we are seeing the same now on Debian as Debian unstable is
moving to OpenSSL 3.0.

https://lists.debian.org/debian-release/2022/05/msg00070.html

Regards,
Salvatore