linux-kernel - Re: [PATCH 1/1] sys_sysfs: Add CONFIG_SYSFS

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Date:	Thu, 13 Feb 2014 14:43:19 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Dave Jones <davej@...hat.com>
Cc:	Fabian Frederick <fabf@...net.be>, linux-kernel@...r.kernel.org,
	rdunlap <rdunlap@...radead.org>, gregkh@...uxfoundation.org
Subject: Re: [PATCH 1/1] sys_sysfs: Add CONFIG_SYSFS_SYSCALL

On Thu, 13 Feb 2014 17:31:41 -0500 Dave Jones <davej@...hat.com> wrote:

> On Thu, Feb 13, 2014 at 10:09:42PM +0800, Fabian Frederick wrote:
>  > sys_sysfs is an obsolete system call no longer supported by libc ...
>  > -This patch adds a default CONFIG_SYSFS_SYSCALL=y
>  > -Option can be turned off in expert mode.
>  > -cond_syscall added to kernel/sys_ni.c
>  > 
>  > Signed-off-by: Fabian Frederick <fabf@...net.be>
>  > ---
>  >  fs/filesystems.c |  2 ++
>  >  init/Kconfig     | 10 ++++++++++
>  >  kernel/sys_ni.c  |  1 +
>  >  3 files changed, 13 insertions(+)
> 
> did anyone ever ship userspace that actually used that syscall ?
> Some ancient version of udev that probably doesn't work on a modern kernel anyway maybe ?
> 
> I wonder if it's something we can make -ENOSYS unconditionally at some point,
> and remove all that code entirely.

Perhaps we could make it `default n' now and see if we receive nastygrams?
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