linux-kernel - Re: [RFC PATCH 4/7] kconfig: support new special property shell=

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Message-ID: <CA+55aFz-SJ970iqDsR8-Ke4z6WvB4n9RXAeen8pG=+YJWubETw@mail.gmail.com>
Date:   Sat, 10 Feb 2018 12:08:12 -0800
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     Kees Cook <keescook@...omium.org>
Cc:     Ulf Magnusson <ulfalizer@...il.com>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Nicolas Pitre <nicolas.pitre@...aro.org>,
        "Luis R . Rodriguez" <mcgrof@...e.com>,
        Randy Dunlap <rdunlap@...radead.org>,
        Sam Ravnborg <sam@...nborg.org>,
        Michal Marek <michal.lkml@...kovi.net>,
        Martin Schwidefsky <schwidefsky@...ibm.com>,
        Pavel Machek <pavel@....cz>,
        linux-s390 <linux-s390@...r.kernel.org>,
        Jiri Kosina <jkosina@...e.cz>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [RFC PATCH 4/7] kconfig: support new special property shell=

On Sat, Feb 10, 2018 at 11:23 AM, Kees Cook <keescook@...omium.org> wrote:
>
> So, if this could do something like this:
>
>         config CC_HAS_STACKPROTECTOR_STRONG
>                 bool
>                 option
> shell="scripts/gcc-${ARCH}_${BITS}-has-stack-protector.sh $CC
> $KBUILD_CPPFLAGS"

Guys, this is not that important.

Don't make some stupid script for stackprotector. If the user doesn't
have a gcc that supports -fstackprotector-*, then don't show the
options. It matters NOT ONE WHIT whether that then means that
stackprotector will be off by default later.

Seriously. This is classic "Kees thinks that _his_ code is so
important that everybody should get the value _he_ cares about".

That's bullshit. Kees, get over yourself. It's a very common thing to
see, but it's WRONG. The fact that _you_ care about this doesn't mean
that everybody else should too.

The whole point was to simplify Kconfig, not to make it even worse.

                       Linus