Run user space application from kernel space

You cannot set the stdin/stdout file handles with call_usermodehelper().

Try opening /dev/console (or whatever) manually.

I think you can help this resource. There's much helpful documentation

http://www.ibm.com/developerworks/linux/library/l-user-space-apps/

Hi,

Thanks for your reply:) .

Any other method for executing user space application from kernel module ?

Thanks

for example use the upcall function. But I think it's not exactly what you need. it is used in userhelper as I understand it

if you can not execute printf from kernel space then solution might be simple, i guess you should have to try redirect standard io from kernel space to user space by open /dev/console from kernel space and give handle to your call from user space, because call_usermodehelper() can't able to send calls itself.

Thanks for your reply. I have already tried the same.

I guess, it is better way. Even though are you stuck on this way or finding tricky way to do the same?

It is working for me.