'\" t
.\"     Title: call_usermodehelper
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: July 2017
.\"    Manual: Module Support
.\"    Source: Kernel Hackers Manual 4.11.6
.\"  Language: English
.\"
.TH "CALL_USERMODEHELPER" "9" "July 2017" "Kernel Hackers Manual 4\&.11\&" "Module Support"
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.SH "NAME"
call_usermodehelper \- prepare and start a usermode application
.SH "SYNOPSIS"
.HP \w'int\ call_usermodehelper('u
.BI "int call_usermodehelper(const\ char\ *\ " "path" ", char\ **\ " "argv" ", char\ **\ " "envp" ", int\ " "wait" ");"
.SH "ARGUMENTS"
.PP
\fIconst char * path\fR
.RS 4
path to usermode executable
.RE
.PP
\fIchar ** argv\fR
.RS 4
arg vector for process
.RE
.PP
\fIchar ** envp\fR
.RS 4
environment for process
.RE
.PP
\fIint wait\fR
.RS 4
wait for the application to finish and return status\&. when UMH_NO_WAIT don\*(Aqt wait at all, but you get no useful error back when the program couldn\*(Aqt be exec\*(Aqed\&. This makes it safe to call from interrupt context\&.
.RE
.SH "DESCRIPTION"
.PP
This function is the equivalent to use
\fBcall_usermodehelper_setup\fR
and
\fBcall_usermodehelper_exec\fR\&.
.SH "COPYRIGHT"
.br