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_CHAUTHTOK 3 39.Os 40.Sh NAME 41.Nm pam_chauthtok 42.Nd perform password related functions within the PAM framework 43.Sh LIBRARY 44.Lb libpam 45.Sh SYNOPSIS 46.In sys/types.h 47.In security/pam_appl.h 48.Ft "int" 49.Fn pam_chauthtok "pam_handle_t *pamh" "int flags" 50.Sh DESCRIPTION 51The 52.Nm 53function attempts to change the authentication token 54for the user associated with the pam context specified by the 55.Fa pamh 56argument. 57.Pp 58The 59.Fa flags 60argument is the binary or of zero or more of the following 61values: 62.Bl -tag -width 18n 63.It Dv PAM_SILENT 64Do not emit any messages. 65.It Dv PAM_CHANGE_EXPIRED_AUTHTOK 66Change only those authentication tokens that have expired. 67.El 68.Pp 69If any other bits are set, 70.Nm 71will return 72.Dv PAM_SYMBOL_ERR . 73.Sh RETURN VALUES 74The 75.Nm 76function returns one of the following values: 77.Bl -tag -width 18n 78.It Bq Er PAM_ABORT 79General failure. 80.It Bq Er PAM_AUTHTOK_DISABLE_AGING 81Authentication token aging disabled. 82.It Bq Er PAM_AUTHTOK_ERR 83Authentication token failure. 84.It Bq Er PAM_AUTHTOK_LOCK_BUSY 85Authentication token lock busy. 86.It Bq Er PAM_AUTHTOK_RECOVERY_ERR 87Failed to recover old authentication token. 88.It Bq Er PAM_BUF_ERR 89Memory buffer error. 90.It Bq Er PAM_CONV_ERR 91Conversation failure. 92.It Bq Er PAM_PERM_DENIED 93Permission denied. 94.It Bq Er PAM_SERVICE_ERR 95Error in service module. 96.It Bq Er PAM_SYMBOL_ERR 97Invalid symbol. 98.It Bq Er PAM_SYSTEM_ERR 99System error. 100.It Bq Er PAM_TRY_AGAIN 101Try again. 102.El 103.Sh SEE ALSO 104.Xr pam 3 , 105.Xr pam_strerror 3 106.Sh STANDARDS 107.Rs 108.%T "X/Open Single Sign-On Service (XSSO) - Pluggable Authentication Modules" 109.%D "June 1997" 110.Re 111.Sh AUTHORS 112The 113.Nm 114function and this manual page were developed for the 115.Fx 116Project by ThinkSec AS and Network Associates Laboratories, the 117Security Research Division of Network Associates, Inc.\& under 118DARPA/SPAWAR contract N66001-01-C-8035 119.Pq Dq CBOSS , 120as part of the DARPA CHATS research program. 121