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NetBSD 6.1.5 - man page for pam_vprompt (netbsd section 3)

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PAM_VPROMPT(3)			   BSD Library Functions Manual 		   PAM_VPROMPT(3)

NAME
     pam_vprompt -- call the conversation function

LIBRARY
     Pluggable Authentication Module Library (libpam, -lpam)

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

     int
     pam_vprompt(const pam_handle_t *pamh, int style, char **resp, const char *fmt, va_list ap);

DESCRIPTION
     The pam_vprompt function constructs a string from the fmt and ap arguments using
     vsnprintf(3), and passes it to the given PAM context's conversation function.

     The style argument specifies the type of interaction requested, and must be one of the fol-
     lowing:

     PAM_PROMPT_ECHO_OFF
			 Display the message and obtain the user's response without displaying
			 it.

     PAM_PROMPT_ECHO_ON  Display the message and obtain the user's response.

     PAM_ERROR_MSG	 Display the message as an error message, and do not wait for a response.

     PAM_TEXT_INFO	 Display the message as an informational message, and do not wait for a
			 response.

     A pointer to the response, or NULL if the conversation function did not return one, is
     stored in the location pointed to by the resp argument.

     The message and response should not exceed PAM_MAX_MSG_SIZE or PAM_MAX_RESP_SIZE, respec-
     tively.  If they do, they may be truncated.

RETURN VALUES
     The pam_vprompt 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
     pam(3), pam_error(3), pam_info(3), pam_prompt(3), pam_strerror(3), pam_verror(3),
     pam_vinfo(3), vsnprintf(3)

STANDARDS
     The pam_vprompt function is an OpenPAM extension.

AUTHORS
     The pam_vprompt 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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