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.\" Copyright (c) 2003 Joseph Koshy <jkoshy@freebsd.org>
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.\" $FreeBSD: src/share/man/man9/prison_check.9,v 1.2.30.2.2.1 2010/12/21 17:09:25 kensmith Exp $
.\"
.Dd December 11, 2003
.Dt PRISON_CHECK 9
.Os
.Sh NAME
.Nm prison_check
.Nd determine if two credentials belong to the same jail
.Sh SYNOPSIS
.In sys/jail.h
.Ft int
.Fn prison_check "struct ucred *cred1" "struct ucred *cred2"
.Sh DESCRIPTION
This function can be used to determine if the two credentials
.Fa cred1
and
.Fa cred2
belong to the same jail.
.Sh RETURN VALUES
The
.Fn prison_check
function
returns
.Er ESRCH
if
.Fa cred1
has been jailed, and
.Fa cred1
and
.Fa cred2
do not belong to the same jail.
In all other cases,
.Fn prison_check
returns zero.
.Sh SEE ALSO
.Xr jail 2