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

NAME
     pam_chauthtok -- perform password related functions within the PAM framework

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 argument.

     The flags argument is the binary or of zero or more of the following values:

     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 21, 2007                           BSD