'\" t
.\"     Title: kstrtobool
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: January 2017
.\"    Manual: Basic C Library Functions
.\"    Source: Kernel Hackers Manual 4.8.15
.\"  Language: English
.\"
.TH "KSTRTOBOOL" "9" "January 2017" "Kernel Hackers Manual 4\&.8\&." "Basic C Library Functions"
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.ie \n(.g .ds Aq \(aq
.el       .ds Aq '
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.nh
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.SH "NAME"
kstrtobool \- convert common user inputs into boolean values
.SH "SYNOPSIS"
.HP \w'int\ kstrtobool('u
.BI "int kstrtobool(const\ char\ *\ " "s" ", bool\ *\ " "res" ");"
.SH "ARGUMENTS"
.PP
\fIs\fR
.RS 4
input string
.RE
.PP
\fIres\fR
.RS 4
result
.RE
.SH "DESCRIPTION"
.PP
This routine returns 0 iff the first character is one of \*(AqYy1Nn0\*(Aq, or [oO][NnFf] for
\(lqon\(rq
and
\(lqoff\(rq\&. Otherwise it will return \-EINVAL\&. Value pointed to by res is updated upon finding a match\&.
.SH "COPYRIGHT"
.br