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OPENPAM_TTYCONV(3)	 BSD Library Functions Manual	    OPENPAM_TTYCONV(3)

NAME
     openpam_ttyconv — simple tty-based conversation function

LIBRARY
     Pluggable Authentication Module Library (libpam, -lpam)

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

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

DESCRIPTION
     The openpam_ttyconv function is a standard conversation function suitable
     for use on TTY devices.  It should be adequate for the needs of most
     text-based interactive programs.

     The openpam_ttyconv function displays a prompt to, and reads in a pass‐
     word from /dev/tty. If this file is not accessible, openpam_ttyconv dis‐
     plays the prompt on the standard error output and reads from the standard
     input.

     The openpam_ttyconv function allows the application to specify a timeout
     for user input by setting the global integer variable
     openpam_ttyconv_timeout to the length of the timeout in seconds.

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

     [PAM_BUF_ERR]	 Memory buffer error.

     [PAM_CONV_ERR]	 Conversation failure.

     [PAM_SYSTEM_ERR]	 System error.

SEE ALSO
     getpass(3), openpam_nullconv(3), pam(3), pam_prompt(3), pam_strerror(3),
     pam_vprompt(3)

STANDARDS
     The openpam_ttyconv function is an OpenPAM extension.

AUTHORS
     The openpam_ttyconv 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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