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Old 08-17-2006, 01:34 AM   #1
yugandhar
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Registered: Jun 2006
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how to send events from kernel module to user space process


Hi all,
I am writing a kernel module. I want to send an event from kernel module to user space how can i do this can any one give me some examples. Presenty i am sending signals from kernel module to user space process but i want events to be sent because there are only two user defined signals SIGUSR1 and SIGUSR2 if i want to have more what i have to do.
 
Old 12-15-2007, 04:51 AM   #2
khaled_h
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Registered: Mar 2007
Distribution: Fedora Core, SuSE, RH
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User and kernel level communication

Hi,

I think you can use netlink sockets. This is a new and nice way to enable user and kernel levels communication. Of course, there are many other ways available.

Netlink is like normal sockets by it used to send messages between user applications and kernel and vice versa.

Here is link:
http://www.linuxjournal.com/article/7356

Regards,
Khaled
 
Old 02-21-2011, 11:39 AM   #3
Soniferiel
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Registered: Feb 2011
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Quote:
Originally Posted by yugandhar View Post
Hi all,
I am writing a kernel module. I want to send an event from kernel module to user space how can i do this can any one give me some examples. Presenty i am sending signals from kernel module to user space process but i want events to be sent because there are only two user defined signals SIGUSR1 and SIGUSR2 if i want to have more what i have to do.
Hi,

In my case I just need to send one signal to my application (SIGUSR1), as you already have get this working, do you still have code snippet on both side kernel module code and user application code? From my researches on the web, I'm little bit confused on how to get this working: must I retrieve the pid of my user application and if so how? (through ioctl or something else?), should I use send_sig or kill_proc or something else?

I would really appreciate your help. Thank you in advance.
 
  


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