On Wednesday, February 22, 2012 8:06:20 pm Ryan Stone wrote:
> On Wed, Feb 22, 2012 at 2:15 PM, Ian Lepore
> wrote:
> > I've never done this, but if I needed to, I think the first thing I'd
> > try is to use an mmap(2) of /dev/kmem to map the memory you need into
> > userspace (of course your user
On Wed, Feb 22, 2012 at 2:15 PM, Ian Lepore
wrote:
> I've never done this, but if I needed to, I think the first thing I'd
> try is to use an mmap(2) of /dev/kmem to map the memory you need into
> userspace (of course your userspace app will need to be running with
> root privs to do this).
>
> Th
On Wed, 2012-02-22 at 17:24 +, Svetlin Manavski wrote:
> Hi all,
> I have a very similar problem as described in this thread back in 2009:
>
> http://lists.freebsd.org/pipermail/freebsd-hackers/2009-January/027367.html
>
> I have a kernel module producing networking stats which I need to
> fr
Hi all,
I have a very similar problem as described in this thread back in 2009:
http://lists.freebsd.org/pipermail/freebsd-hackers/2009-January/027367.html
I have a kernel module producing networking stats which I need to
frequently read from the user space. A copy of the data structure would be
On Thu, Jan 15, 2009 at 01:22:18PM -0600, Gerry Weaver wrote:
> _
>
> From: Alexej Sokolov [mailto:bsd.qu...@googlemail.com]
> To: Gerry Weaver [mailto:ger...@compvia.com]
> Cc: freebsd-hackers@freebsd.org
> Sent: Thu, 15 Jan 2009 12:31:00 -0600
> Subject: Re: How to
_
From: Alexej Sokolov [mailto:bsd.qu...@googlemail.com]
To: Gerry Weaver [mailto:ger...@compvia.com]
Cc: freebsd-hackers@freebsd.org
Sent: Thu, 15 Jan 2009 12:31:00 -0600
Subject: Re: How to access kernel memory from user space
2008/12/23 Gerry Weaver
Hello All,
I am working on
2008/12/23 Gerry Weaver
> Hello All,
>
> I am working on a driver that collects various network statistics via pfil.
> I have a simple array of structures that I use to store the statistics. I
> also have a user space process that needs to collect these statistics every
> second or so. A copy ope
On 2008-Dec-24 15:22:07 -0600, Gerry Weaver wrote:
>to keep it minimal. Is there any significant trade off in performance
>between the two approaches?
No. In both cases, the actual access is managed through the normal
hardware translation the same as any other data. About the only
difference is
_
From: Peter Jeremy [mailto:peterjer...@optushome.com.au]
To: Gerry Weaver [mailto:ger...@compvia.com]
Cc: freebsd-hackers@freebsd.org
Sent: Wed, 24 Dec 2008 02:44:45 -0600
Subject: Re: How to access kernel memory from user space
On 2008-Dec-22 18:05:34 -0600, Gerry Weaver wrote:
>I
On 2008-Dec-22 18:05:34 -0600, Gerry Weaver wrote:
>I am working on a driver that collects various network statistics via
>pfil. I have a simple array of structures that I use to store the
>statistics. I also have a user space process that needs to collect
>these statistics every second or so.
Th
On Mon, Dec 22, 2008 at 06:05:34PM -0600, Gerry Weaver wrote:
> Hello All,
>
> I am working on a driver that collects various network statistics via pfil. I
> have a simple array of structures that I use to store the statistics. I also
> have a user space process that needs to collect these stat
hi Gerry..
you may be interested in the following functions:
int copyin(const void *uaddr, void *kaddr, size_t len);
int copyout(const void *kaddr, void *uaddr, size_t len);
int copyinstr(const void *uaddr, void *kaddr, size_t len, size_t *done);
int bcopy(const void *src, const void *dst, len);
hi Gerry..
you may be interested in the following functions:
int copyin(const void *uaddr, void *kaddr, size_t len);
int copyout(const void *kaddr, void *uaddr, size_t len);
int copyinstr(const void *uaddr, void *kaddr, size_t len, size_t *done);
int bcopy(const void *src, const void *dst, len);
Hello All,
I am working on a driver that collects various network statistics via pfil. I
have a simple array of structures that I use to store the statistics. I also
have a user space process that needs to collect these statistics every second
or so. A copy operation from kernel to user space w
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