linux-kernel - Re: [PATCH v5 1/3] Provide in-kernel headers to make extending kernel easier

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Message-ID: <76db9a89-ae64-5c2b-6f56-3e2b860cbda2@metux.net>
Date:   Fri, 12 Apr 2019 18:16:19 +0200
From:   "Enrico Weigelt, metux IT consult" <lkml@...ux.net>
To:     Arnd Bergmann <arnd@...db.de>, Olof Johansson <olof@...om.net>
Cc:     Joel Fernandes <joel@...lfernandes.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Qais Yousef <qais.yousef@....com>,
        Dietmar Eggemann <dietmar.eggemann@....com>,
        Manoj Rao <linux@...ojrajarao.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Alexei Starovoitov <ast@...nel.org>,
        atish patra <atishp04@...il.com>,
        Daniel Colascione <dancol@...gle.com>,
        Dan Williams <dan.j.williams@...el.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Guenter Roeck <groeck@...omium.org>,
        Jonathan Corbet <corbet@....net>,
        Karim Yaghmour <karim.yaghmour@...rsys.com>,
        Kees Cook <keescook@...omium.org>,
        Android Kernel Team <kernel-team@...roid.com>,
        "open list:DOCUMENTATION" <linux-doc@...r.kernel.org>,
        "open list:KERNEL SELFTEST FRAMEWORK" 
        <linux-kselftest@...r.kernel.org>,
        linux-trace-devel@...r.kernel.org,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Randy Dunlap <rdunlap@...radead.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        Shuah Khan <shuah@...nel.org>, Yonghong Song <yhs@...com>
Subject: Re: [PATCH v5 1/3] Provide in-kernel headers to make extending kernel
 easier

On 10.04.19 21:19, Arnd Bergmann wrote:

> - we use cpio for initramfs because unpacking cpio in C code is
>   fairly simple, while unpacking tar is not (see the wikipedia page on tar).
>   If we were to unpack it from the kernel, the initramfs code could be
>   trivially reused.

What about ar ? ;-)

> - nobody sane uses cpio in user space, since tar is already present
>   almost everywhere, while cpio is rather obscure in comparison.

So, rpm doesn't count as "sane" ? :o


--mtx

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