linux-kernel - Re: [RFC] Provide in-kernel headers for making it easy to extend the kernel

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Message-ID: <742b4797-9954-fb54-cce8-47fcad750c69@metux.net>
Date:   Thu, 7 Mar 2019 01:42:45 +0100
From:   "Enrico Weigelt, metux IT consult" <lkml@...ux.net>
To:     Pavel Machek <pavel@....cz>,
        Joel Fernandes <joel@...lfernandes.org>
Cc:     hpa@...or.com, Daniel Colascione <dancol@...gle.com>,
        Greg KH <gregkh@...uxfoundation.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Andrew Morton <akpm@...ux-foundation.org>, ast@...nel.org,
        atishp04@...il.com, Borislav Petkov <bp@...en8.de>,
        Ingo Molnar <mingo@...hat.com>, Jan Kara <jack@...e.cz>,
        Jonathan Corbet <corbet@....net>, karim.yaghmour@...rsys.com,
        Kees Cook <keescook@...omium.org>, kernel-team@...roid.com,
        "open list:DOCUMENTATION" <linux-doc@...r.kernel.org>,
        Manoj Rao <linux@...ojrajarao.com>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Paul McKenney <paulmck@...ux.vnet.ibm.com>,
        "Peter Zijlstra (Intel)" <peterz@...radead.org>,
        Randy Dunlap <rdunlap@...radead.org>, rostedt@...dmis.org,
        Thomas Gleixner <tglx@...utronix.de>,
        "maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)" <x86@...nel.org>,
        yhs@...com
Subject: Re: [RFC] Provide in-kernel headers for making it easy to extend the
 kernel

On 07.03.19 00:09, Pavel Machek wrote:

> So your licensing requirements prevent you from having headers in the
> filesystem, but allow module with the headers hidden inside on the
> filesystem?

Maybe it's just because I've missed most of the thread, but which
license requirements exactly could that be ?

The kernel still is GPL, isn't it ? So, any device vendor needs to hand
out the exact kernel source he hat built the image from, anyways.
(by the way: we should start a flash mob action of demanding sources
from the pocket-computers-with-3g vendors, but that's another story ;-))

So, what kind of license issue could it be, which prevents putting the
files (that you'd have to hand out anyways) directly into filesystem,
while allowing them in a .ko in the same filesystem ?

I'm confused.

> Looks like you should just tar xvzf
> this-is-a-kernel-module-I-promise.ko /usr/src/linux/include :-).

We should ask coreutils folks to add an ELF encapsulation to tar ;-)


--mtx

-- 
Enrico Weigelt, metux IT consult
Free software and Linux embedded engineering
info@...ux.net -- +49-151-27565287