1.\" $NetBSD: pam_self.8,v 1.3 2005/02/26 15:14:15 thorpej Exp $ 2.\" Copyright (c) 2001 Mark R V Murray 3.\" All rights reserved. 4.\" Copyright (c) 2001 Networks Associates Technology, Inc. 5.\" All rights reserved. 6.\" 7.\" Portions of this software were developed for the FreeBSD Project by 8.\" ThinkSec AS and NAI Labs, the Security Research Division of Network 9.\" Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 10.\" ("CBOSS"), as part of the DARPA CHATS research program. 11.\" 12.\" Redistribution and use in source and binary forms, with or without 13.\" modification, are permitted provided that the following conditions 14.\" are met: 15.\" 1. Redistributions of source code must retain the above copyright 16.\" notice, this list of conditions and the following disclaimer. 17.\" 2. Redistributions in binary form must reproduce the above copyright 18.\" notice, this list of conditions and the following disclaimer in the 19.\" documentation and/or other materials provided with the distribution. 20.\" 3. The name of the author may not be used to endorse or promote 21.\" products derived from this software without specific prior written 22.\" permission. 23.\" 24.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 25.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 28.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34.\" SUCH DAMAGE. 35.\" 36.\" $FreeBSD: src/lib/libpam/modules/pam_self/pam_self.8,v 1.11 2004/07/02 23:52:18 ru Exp $ 37.\" 38.Dd December 5, 2001 39.Dt PAM_SELF 8 40.Os 41.Sh NAME 42.Nm pam_self 43.Nd Self PAM module 44.Sh SYNOPSIS 45.Op Ar service-name 46.Ar module-type 47.Ar control-flag 48.Pa pam_self 49.Op Ar options 50.Sh DESCRIPTION 51The Self authentication service module for PAM 52provides functionality for only one PAM category: 53authentication. 54In terms of the 55.Ar module-type 56parameter, this is the 57.Dq Li auth 58feature. 59.Ss Self Authentication Module 60The Self authentication component 61.Pq Fn pam_sm_authenticate , 62returns success if and only if the target user's user ID is identical 63with the current real user ID. 64If the current real user ID is zero, authentication will fail, 65unless the 66.Cm allow_root 67option was specified. 68.Pp 69The following options may be passed to the authentication module: 70.Bl -tag -width ".Cm allow_root" 71.It Cm debug 72.Xr syslog 3 73debugging information at 74.Dv LOG_DEBUG 75level. 76.It Cm no_warn 77suppress warning messages to the user. 78These messages include reasons why the user's authentication attempt 79was declined. 80.It Cm allow_root 81do not automatically fail if the current real user ID is 0. 82.El 83.Sh SEE ALSO 84.Xr getuid 2 , 85.Xr pam.conf 5 , 86.Xr pam 8 87.Sh AUTHORS 88The 89.Nm 90module and this manual page were developed for the 91.Fx 92Project by 93ThinkSec AS and NAI Labs, the Security Research Division of Network 94Associates, Inc.\& under DARPA/SPAWAR contract N66001-01-C-8035 95.Pq Dq CBOSS , 96as part of the DARPA CHATS research program. 97