call_usermodehelper
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## Name

call_usermodehelper — prepare and start a usermode application

## Synopsis

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

## Arguments

`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 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

This function is the equivalent to use `call_usermodehelper_setup` and `call_usermodehelper_exec`.

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