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Date: Fri, 21 Dec 2007 14:35:26 -0800
From: Greg KH <greg@kroah.com>
To: Jan Engelhardt <jengelh@computergmbh.de>
Cc: Willy Tarreau <w@1wt.eu>, Eric Paris <eparis@redhat.com>,
       linux-kernel@vger.kernel.org, jmorris@namei.org, alan@redhat.com,
       chrisw@redhat.com, akpm@linux-foundation.org,
       linux-security-module@vger.kernel.org, solar@openwall.com,
       wtarreau@hera.kernel.org
Subject: Re: [PATCH] Allow Kconfig to set default mmap_min_addr protection
Message-ID: <20071221223526.GC24780@kroah.com>
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On Fri, Dec 21, 2007 at 11:04:19PM +0100, Jan Engelhardt wrote:
> 
> On Dec 21 2007 22:16, Willy Tarreau wrote:
> >Hi Jan,
> >
> >> >> >+config SECURITY_DEFAULT_MMAP_MIN_ADDR
> >> >> >+        int "Low address space to protect from user allocation"
> >> >> 
> >> >> Hm, should not this be 'hex'?
> >> >
> >> >I guess it could be, but the input for /proc/sys/vm/mmap_min_addr is
> >> >base 10 as well
> >> 
> >> sysfs is autobase, i.e. echo "0xb000" >/sys/foo will Do The Right Thing.
> >
> >yes but if you cat  /proc/sys/vm/mmap_min_addr, it returns in base 10.
> 
> sysfs should probably be tuned to output it in a preferred base.

Again, this is sysctl, not sysfs.  two very different things...