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PAM_CHAUTHTOK(3)	 BSD Library Functions Manual	      PAM_CHAUTHTOK(3)

NAME
     pam_chauthtok — perform password related functions within the PAM frame‐
     work

LIBRARY
     Pluggable Authentication Module Library (libpam, -lpam)

SYNOPSIS
     #include <sys/types.h>
     #include <security/pam_appl.h>

     int
     pam_chauthtok(pam_handle_t *pamh, int flags);

DESCRIPTION
     The pam_chauthtok function attempts to change the authentication token
     for the user associated with the pam context specified by the pamh argu‐
     ment.

     The flags argument is the binary or of zero or more of the following val‐
     ues:

     PAM_SILENT		 Do not emit any messages.

     PAM_CHANGE_EXPIRED_AUTHTOK
			 Change only those authentication tokens that have
			 expired.

     If any other bits are set, pam_chauthtok will return PAM_SYMBOL_ERR.

RETURN VALUES
     The pam_chauthtok function returns one of the following values:

     [PAM_ABORT]	 General failure.

     [PAM_AUTHTOK_DISABLE_AGING]
			 Authentication token aging disabled.

     [PAM_AUTHTOK_ERR]	 Authentication token failure.

     [PAM_AUTHTOK_LOCK_BUSY]
			 Authentication token lock busy.

     [PAM_AUTHTOK_RECOVERY_ERR]
			 Failed to recover old authentication token.

     [PAM_BUF_ERR]	 Memory buffer error.

     [PAM_CONV_ERR]	 Conversation failure.

     [PAM_PERM_DENIED]	 Permission denied.

     [PAM_SERVICE_ERR]	 Error in service module.

     [PAM_SYMBOL_ERR]	 Invalid symbol.

     [PAM_SYSTEM_ERR]	 System error.

     [PAM_TRY_AGAIN]	 Try again.

SEE ALSO
     pam(3), pam_strerror(3)

STANDARDS
     X/Open Single Sign-On Service (XSSO) - Pluggable Authentication Modules,
     June 1997.

AUTHORS
     The pam_chauthtok function and this manual page were developed for the
     FreeBSD Project by ThinkSec AS and Network Associates Laboratories, the
     Security Research Division of Network Associates, Inc. under DARPA/SPAWAR
     contract N66001-01-C-8035 (“CBOSS”), as part of the DARPA CHATS research
     program.

BSD			       December 18, 2011			   BSD

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