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