Man page 9 : call_usermodehelper

call_usermodehelper - prepare and start a usermode application

int call_usermodehelper(char *  path , char **  argv , char **  envp , int  wait );

path
    path to usermode executable

argv
    arg vector for process

envp
    environment for process

wait
    wait for the application to finish and return status. when UMH_NO_WAIT donAqt wait at all, but you get no useful error back when the program couldnAqt be execAqed. This makes it safe to call from interrupt context.

This function is the equivalent to use call_usermodehelper_setup and call_usermodehelper_exec.