From mboxrd@z Thu Jan  1 00:00:00 1970
From: gknispel@proformatique.com (Guillaume Knispel)
Date: Wed, 29 Jun 2011 22:05:45 +0200
Subject: link question
In-Reply-To: <20110629184040.GA18539@kroah.com>
References: <4E0B629E.6030302@tysdomain.com> <20110629184040.GA18539@kroah.com>
Message-ID: <20110629220545.0fe37dfb@xilun>
To: kernelnewbies@lists.kernelnewbies.org
List-Id: kernelnewbies.lists.kernelnewbies.org

On Wed, 29 Jun 2011 11:40:40 -0700
Greg KH <greg@kroah.com> wrote:

> On Wed, Jun 29, 2011 at 11:36:30AM -0600, Littlefield, Tyler wrote:
> > I have a quick question; this is something I haven't been able to figure 
> > out. By using the kernel headers you can call functions that are defined 
> > in the kernel,
> 
> >From userspace?  No you can't.  You need to use glibc or something else.
> 
> The kernel is not a library, the only way to interact with it from
> userspace is by making system calls.  You can use glibc or some libc to
> make those system calls for you through other functions, or you can call
> them "raw" if you really know what you are doing.
> 
> Hope this helps,
> 
> greg k-h

Or maybe he was actually talking about kernel modules and in this case
the linking is done by the kernel itself, at runtime.

-- 
Guillaume Knispel