openpam_nullconv man page on FreeBSD

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OPENPAM_NULLCONV(3)	 BSD Library Functions Manual	   OPENPAM_NULLCONV(3)

     openpam_nullconv — null conversation function

     Pluggable Authentication Module Library (libpam, -lpam)

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

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

     The openpam_nullconv function is a null conversation function suitable
     for applications that want to use PAM but don't support interactive dia‐
     log 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 configura‐
     tion 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.

     The openpam_nullconv function returns one of the following values:

     [PAM_CONV_ERR]	 Conversation failure.

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

     The openpam_nullconv function is an OpenPAM extension.

     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

BSD			       December 21, 2007			   BSD

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