get user socket message - some example

get user socket message - some example

[Mark Ryden]

Hello,
 I had looked at the code of uded.c
I udnerstand that when get kernel messages we call
get_netlink_msg().
This messages are sent when events like adding/removing a device or
repartitioning of a disk occur. The kernel is responsoble to send them.

As I understand, there when we get user socket message qw call get_udevd_msg().

My question are:  I understand that these events are generated
from user space. Can you give example for generating such a user space event
which will call get_udevd_msg()  ?

Regards,
MR


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Re: get user socket message - some example

[Kay Sievers]

On Tue, Apr 11, 2006 at 06:58:51PM +0300, Mark Ryden wrote:
> Hello,
> I had looked at the code of uded.c
> I udnerstand that when get kernel messages we call
> get_netlink_msg().
> This messages are sent when events like adding/removing a device or
> repartitioning of a disk occur. The kernel is responsoble to send them.
> 
> As I understand, there when we get user socket message qw call get_udevd_msg().
> 
> My question are:  I understand that these events are generated
> from user space. Can you give example for generating such a user space event
> which will call get_udevd_msg()  ?

udevcontrol sends messages over this socket. Real event messages have
been sent over this socket in the past from udevsend executed
by /sbin/hotplug, but that codepath is dead and no longer used.

Kay


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Re: get user socket message - some example

[Mark Ryden]

Hello,
  So is there is intention to remove this code in future versions?

Mark

On 4/11/06, Kay Sievers <kay.sievers@vrfy.org> wrote:
> On Tue, Apr 11, 2006 at 06:58:51PM +0300, Mark Ryden wrote:
> > Hello,
> > I had looked at the code of uded.c
> > I udnerstand that when get kernel messages we call
> > get_netlink_msg().
> > This messages are sent when events like adding/removing a device or
> > repartitioning of a disk occur. The kernel is responsoble to send them.
> >
> > As I understand, there when we get user socket message qw call get_udevd_msg().
> >
> > My question are:  I understand that these events are generated
> > from user space. Can you give example for generating such a user space event
> > which will call get_udevd_msg()  ?
>
> udevcontrol sends messages over this socket. Real event messages have
> been sent over this socket in the past from udevsend executed
> by /sbin/hotplug, but that codepath is dead and no longer used.
>
> Kay
>


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Re: get user socket message - some example

[Kay Sievers]

On Wed, Apr 12, 2006 at 08:18:30AM +0200, Mark Ryden wrote:
> Hello,
>   So is there is intention to remove this code in future versions?

Maybe. Why is that interesting for you?

Kay


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