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Date: Fri, 8 Oct 2004 18:03:00 +0100
From: Luke Kenneth Casson Leighton <lkcl@lkcl.net>
To: Bernd Petrovitsch <bernd@firmix.at>
Cc: Brian Gerst <bgerst@didntduck.org>, linux-kernel@vger.kernel.org
Subject: Re: how do you call userspace syscalls (e.g. sys_rename) from inside kernel
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On Fri, Oct 08, 2004 at 05:12:51PM +0200, Bernd Petrovitsch wrote:

> >  my alternative is to patch every single vfs-related sys_* in fs/*.c to
> >  be able to "plug in" to these functions.
> 
> Why not implement it in user-space?
 
 that is the base that i am working from (fuse).

 the problem comes when adding support to fuse for xattrs, and the
 subsequent use of those xattrs for SE/Linux.

 security/selinux/hooks.c cannot cope with the -512 response
 "please try later" which the fuse module always always always
 sends, in order for fuse to give the userspace daemon a chance
 to wake up and smell the roses.

 ... and i sure ain't gonna hack selinux about!
 
 l.

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