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e9fdd49453
Reviewed by: bcr, emaste, pauamma_gundo.com, mhorne MFC after: 2 weeks Sponsored by: Kumacom SAS Differential Revision: https://reviews.freebsd.org/D40639
60 lines
2.1 KiB
Groff
60 lines
2.1 KiB
Groff
.\"
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.\" Copyright (c) 2003 Joseph Koshy <jkoshy@FreeBSD.org>
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.\"
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.\" All rights reserved.
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.\"
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.\" This program is free software.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY EXPRESS OR
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.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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.\" IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT,
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.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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.\"
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.Dd August 18, 2023
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.Dt PRISON_CHECK 9
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.Os
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.Sh NAME
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.Nm prison_check
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.Nd determine if subjects may see entities according to jail restrictions
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.Sh SYNOPSIS
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.In sys/jail.h
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.Ft int
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.Fn prison_check "struct ucred *cred1" "struct ucred *cred2"
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.Sh DESCRIPTION
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This function determines if a subject with credentials
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.Fa cred1
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is denied access to subjects or objects with credentials
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.Fa cred2
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according to the policy that a subject can see subjects or objects in its own
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jail or any sub-jail of it.
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.Sh RETURN VALUES
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The
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.Fn prison_check
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function
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returns
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.Er ESRCH
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if
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.Fa cred2
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is not in the same jail or a sub-jail of that of
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.Fa cred1 .
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In all other cases,
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.Fn prison_check
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returns zero.
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.Sh SEE ALSO
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.Xr jail 2
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