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Old 03-05-2005, 07:19 AM   #1
Registered: Feb 2005
Posts: 91

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notify user space application from the kernel space


I need to write a device driver to monitor the battery. The driver will capture the interrupt whenever the battery is removed. My question is how to notify the user application from the interrupt handler? May I send a signal to all of applications? Or only send the signal to the specific application and how?

Old 02-18-2006, 06:08 AM   #2
LQ Newbie
Registered: Feb 2006
Posts: 2

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The application intends to reveive notification has to request for it..You have to use Async notification given by the fasync structure. See the fasync_struct and an example of using this from the net.

Old 06-22-2009, 12:32 PM   #3
Registered: Jun 2008
Posts: 82

Rep: Reputation: 15
Try using netlink socket..


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