OPENPAM_TTYCONV(3) Library Functions Manual OPENPAM_TTYCONV(3)
openpam_ttyconv -- simple tty-based conversation function
Pluggable Authentication Module Library (libpam, -lpam)
openpam_ttyconv(int n, const struct pam_message **msg, struct
pam_response **resp, void *data);
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
password from /dev/tty. If this file is not accessible, openpam_ttyconv
displays the prompt on the standard error output and reads from the
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.
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.
getpass(3), openpam_nullconv(3), pam(3), pam_prompt(3), pam_strerror(3),
The openpam_ttyconv function is an OpenPAM extension.
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
NetBSD 6.1.5 December 18, 2011 NetBSD 6.1.5