xref: /freebsd/lib/libpam/modules/pam_chroot/pam_chroot.8 (revision eac956b2d1d08393197baae846e0068466a0c56c)

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.\" Portions of this software were developed for the FreeBSD Project by
.\" ThinkSec AS and NAI Labs, the Security Research Division of Network
.\" Associates, Inc.  under DARPA/SPAWAR contract N66001-01-C-8035
.\" ("CBOSS"), as part of the DARPA CHATS research program.
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.Dd February 10, 2003
.Dt PAM_CHROOT 8
.Os
.Sh NAME
.Nm pam_chroot
.Nd Chroot PAM module
.Sh SYNOPSIS
.Op Ar service-name
.Ar module-type
.Ar control-flag
.Pa pam_chroot
.Op Ar arguments
.Sh DESCRIPTION
The chroot service module for PAM chroots users into either a
predetermined directory or one derived from their home directory.
If a user's home directory as specified in the
.Dv passwd
structure returned by
.Xr getpwnam 3
contains the string
.Dq /./ ,
the portion of the directory name to the left of that string is used
as the chroot directory.
Otherwise, the directory specified by the
.Cm dir
option (see below) is used.
.Bl -tag -width ".Cm also_root"
.It Cm also_root
Do not hold user id 0 exempt from the chroot requirement.
.It Cm always
Report a failure if a chroot directory could not be derived from the
user's home directory, and the
.Cm dir
option was not specified.
.It Cm dir Ns = Ns Ar directory
Specify the chroot directory to use if one could not be derived from
the user's home directory.
.El
.Sh SEE ALSO
.Xr pam.conf 5 ,
.Xr pam 8
.Sh AUTHORS
The
.Nm
module and this manual page were developed for the
.Fx
Project by
ThinkSec AS and NAI Labs, the Security Research Division of Network
Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035
.Pq Dq CBOSS ,
as part of the DARPA CHATS research program.