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OPENPAM_NULLCONV(3)        Library Functions Manual        OPENPAM_NULLCONV(3)

NAME
     openpam_nullconv -- null conversation function

LIBRARY
     Pluggable Authentication Module Library (libpam, -lpam)

SYNOPSIS
     #include <&lt;sys/types.h>&gt;
     #include <&lt;security/pam_appl.h>&gt;
     #include <&lt;security/openpam.h>&gt;

     int
     openpam_nullconv(int n, const struct pam_message **msg, struct
     pam_response **resp, void *data);

DESCRIPTION
     The openpam_nullconv function is a null conversation function suitable
     for applications that want to use PAM but don't support interactive
     dialog with the user.  Such applications should set PAM_AUTHTOK to
     whatever authentication token they've obtained on their own before
     calling pam_authenticate(3) and / or pam_chauthtok(3), and their PAM
     configuration should specify the use_first_pass option for all modules
     that require access to the authentication token, to make sure they use
     PAM_AUTHTOK rather than try to query the user.

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

     [PAM_CONV_ERR]      Conversation failure.

SEE ALSO
     openpam_ttyconv(3), pam(3), pam_authenticate(3), pam_chauthtok(3),
     pam_prompt(3), pam_set_item(3), pam_strerror(3), pam_vprompt(3)

STANDARDS
     The openpam_nullconv function is an OpenPAM extension.

AUTHORS
     The openpam_nullconv 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.

NetBSD 6.1.5                   December 18, 2011                  NetBSD 6.1.5