1.\"- 2.\" Copyright (c) 2001-2003 Networks Associates Technology, Inc. 3.\" Copyright (c) 2004-2007 Dag-Erling Smørgrav 4.\" All rights reserved. 5.\" 6.\" This software was developed for the FreeBSD Project by ThinkSec AS and 7.\" Network Associates Laboratories, the Security Research Division of 8.\" Network 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.\" $P4$ 36.\" 37.Dd December 21, 2007 38.Dt PAM_GETENV 3 39.Os 40.Sh NAME 41.Nm pam_getenv 42.Nd retrieve the value of a PAM environment variable 43.Sh LIBRARY 44.Lb libpam 45.Sh SYNOPSIS 46.In sys/types.h 47.In security/pam_appl.h 48.Ft "const char *" 49.Fn pam_getenv "pam_handle_t *pamh" "const char *name" 50.Sh DESCRIPTION 51The 52.Nm 53function returns the value of an environment variable. 54Its semantics are similar to those of 55.Xr getenv 3 , 56but it accesses the PAM 57context's environment list instead of the application's. 58.Pp 59.Sh RETURN VALUES 60The 61.Nm 62function returns 63.Dv NULL 64on failure. 65.Sh SEE ALSO 66.Xr getenv 3 , 67.Xr pam 3 , 68.Xr pam_getenvlist 3 , 69.Xr pam_putenv 3 , 70.Xr pam_setenv 3 71.Sh STANDARDS 72.Rs 73.%T "X/Open Single Sign-On Service (XSSO) - Pluggable Authentication Modules" 74.%D "June 1997" 75.Re 76.Sh AUTHORS 77The 78.Nm 79function and this manual page were developed for the 80.Fx 81Project by ThinkSec AS and Network Associates Laboratories, the 82Security Research Division of Network Associates, Inc.\& under 83DARPA/SPAWAR contract N66001-01-C-8035 84.Pq Dq CBOSS , 85as part of the DARPA CHATS research program. 86