1.\"- 2.\" Copyright (c) 2001-2003 Networks Associates Technology, Inc. 3.\" All rights reserved. 4.\" 5.\" This software was developed for the FreeBSD Project by ThinkSec AS and 6.\" Network Associates Laboratories, the Security Research Division of 7.\" Network Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 8.\" ("CBOSS"), as part of the DARPA CHATS research program. 9.\" 10.\" Redistribution and use in source and binary forms, with or without 11.\" modification, are permitted provided that the following conditions 12.\" are met: 13.\" 1. Redistributions of source code must retain the above copyright 14.\" notice, this list of conditions and the following disclaimer. 15.\" 2. Redistributions in binary form must reproduce the above copyright 16.\" notice, this list of conditions and the following disclaimer in the 17.\" documentation and/or other materials provided with the distribution. 18.\" 3. The name of the author may not be used to endorse or promote 19.\" products derived from this software without specific prior written 20.\" permission. 21.\" 22.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 23.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 26.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32.\" SUCH DAMAGE. 33.\" 34.\" $P4$ 35.\" 36.Dd June 16, 2005 37.Dt OPENPAM_BORROW_CRED 3 38.Os 39.Sh NAME 40.Nm openpam_borrow_cred 41.Nd temporarily borrow user credentials 42.Sh LIBRARY 43.Lb libpam 44.Sh SYNOPSIS 45.In sys/types.h 46.In security/pam_appl.h 47.In security/openpam.h 48.Ft "int" 49.Fn openpam_borrow_cred "pam_handle_t *pamh" "const struct passwd *pwd" 50.Sh DESCRIPTION 51The 52.Nm 53function saves the current credentials and 54switches to those of the user specified by its 55.Fa pwd 56argument. 57The affected credentials are the effective UID, the effective GID, and 58the group access list. 59The original credentials can be restored using 60.Xr openpam_restore_cred 3 . 61.Pp 62.Sh RETURN VALUES 63The 64.Nm 65function returns one of the following values: 66.Bl -tag -width 18n 67.It Bq Er PAM_BUF_ERR 68Memory buffer error. 69.It Bq Er PAM_PERM_DENIED 70Permission denied. 71.It Bq Er PAM_SYSTEM_ERR 72System error. 73.El 74.Sh SEE ALSO 75.Xr setegid 2 , 76.Xr seteuid 2 , 77.Xr setgroups 2 , 78.Xr openpam_restore_cred 3 , 79.Xr pam 3 , 80.Xr pam_strerror 3 81.Sh STANDARDS 82The 83.Nm 84function is an OpenPAM extension. 85.Sh AUTHORS 86The 87.Nm 88function and this manual page were developed for the 89.Fx 90Project by ThinkSec AS and Network Associates Laboratories, the 91Security Research Division of Network Associates, Inc.\& under 92DARPA/SPAWAR contract N66001-01-C-8035 93.Pq Dq CBOSS , 94as part of the DARPA CHATS research program. 95