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.\" Copyright (c) 2003 Networks Associates Technology, Inc.
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.\" All rights reserved.
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.\"
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.\" Portions of this software were developed for the FreeBSD Project by
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.\" ThinkSec AS and NAI Labs, the Security Research Division of Network
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2003-05-24 19:53:08 +00:00
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.\" Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035
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.\" ("CBOSS"), as part of the DARPA CHATS research program.
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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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.\" 3. The name of the author may not be used to endorse or promote
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.\" products derived from this software without specific prior written
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.\" permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd February 10, 2003
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.Dt PAM_CHROOT 8
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.Os
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.Sh NAME
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.Nm pam_chroot
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.Nd Chroot PAM module
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.Sh SYNOPSIS
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.Op Ar service-name
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.Ar module-type
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.Ar control-flag
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.Pa pam_chroot
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.Op Ar arguments
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.Sh DESCRIPTION
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The chroot service module for PAM chroots users into either a
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predetermined directory or one derived from their home directory.
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If a user's home directory as specified in the
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.Vt passwd
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structure returned by
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.Xr getpwnam 3
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contains the string
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.Dq Li /./ ,
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the portion of the directory name to the left of that string is used
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as the chroot directory, and the portion to the right will be the
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current working directory inside the chroot tree.
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Otherwise, the directories specified by the
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.Cm dir
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and
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.Cm cwd
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options (see below) are used.
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.Bl -tag -width ".Cm also_root"
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.It Cm also_root
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Do not hold user ID 0 exempt from the chroot requirement.
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.It Cm always
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Report a failure if a chroot directory could not be derived from the
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user's home directory, and the
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.Cm dir
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option was not specified.
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.It Cm cwd Ns = Ns Ar directory
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Specify the directory to
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.Xr chdir 2
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into after a successful
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.Xr chroot 2
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call.
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.It Cm dir Ns = Ns Ar directory
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Specify the chroot directory to use if one could not be derived from
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the user's home directory.
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.El
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.Sh SEE ALSO
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.Xr pam.conf 5 ,
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.Xr pam 8
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.Sh AUTHORS
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The
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.Nm
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module and this manual page were developed for the
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.Fx
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Project by
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ThinkSec AS and NAI Labs, the Security Research Division of Network
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2004-07-02 23:52:20 +00:00
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Associates, Inc.\& under DARPA/SPAWAR contract N66001-01-C-8035
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2003-03-30 22:58:23 +00:00
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.Pq Dq CBOSS ,
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as part of the DARPA CHATS research program.
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