call_usermodehelper_exec (9) Linux Manual Page
call_usermodehelper_exec – start a usermode application
Synopsis
int call_usermodehelper_exec(struct subprocess_info *sub_info, int wait);Arguments
sub_info
-
- information about the subprocessa
wait
- wait for the application to finish and return status. when UMH_NO_WAIT don’t wait at all, but you get no useful error back when the program couldn’t be exec’ed. This makes it safe to call from interrupt context.
Description
Runs a user-space application. The application is started asynchronously if wait is not set, and runs as a child of system workqueues. (ie. it runs with full root capabilities and optimized affinity).