'\" t
.\"     Title: pam_prompt
.\"    Author: [FIXME: author] [see http://www.docbook.org/tdg5/en/html/author]
.\" Generator: DocBook XSL Stylesheets v1.79.2 <http://docbook.sf.net/>
.\"      Date: 08/28/2024
.\"    Manual: Linux-PAM Manual
.\"    Source: Linux-PAM
.\"  Language: English
.\"
.TH "PAM_PROMPT" "3" "08/28/2024" "Linux\-PAM" "Linux\-PAM Manual"
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.SH "NAME"
pam_prompt, pam_vprompt \- interface to conversation function
.SH "SYNOPSIS"
.sp
.ft B
.nf
#include <security/pam_ext\&.h>
.fi
.ft
.HP \w'int\ pam_prompt('u
.BI "int pam_prompt(pam_handle_t\ *" "pamh" ", int\ " "style" ", char\ **" "response" ", const\ char\ *" "fmt" ", " "\&.\&.\&." ");"
.HP \w'int\ pam_vprompt('u
.BI "int pam_vprompt(pam_handle_t\ *" "pamh" ", int\ " "style" ", char\ **" "response" ", const\ char\ *" "fmt" ", va_list\ " "args" ");"
.SH "DESCRIPTION"
.PP
The
\fBpam_prompt\fR
function constructs a message from the specified format string and arguments and passes it to the conversation function as set by the service\&. Upon successful return,
\fIresponse\fR
is set to point to a string returned from the conversation function\&. This string is allocated on heap and should be freed\&.
.SH "RETURN VALUES"
.PP
PAM_BUF_ERR
.RS 4
Memory buffer error\&.
.RE
.PP
PAM_CONV_ERR
.RS 4
Conversation failure\&.
.RE
.PP
PAM_SUCCESS
.RS 4
Conversation succeeded, response is set\&.
.RE
.PP
PAM_SYSTEM_ERR
.RS 4
System error\&.
.RE
.SH "SEE ALSO"
.PP
\fBpam\fR(8),
\fBpam_conv\fR(3)
.SH "STANDARDS"
.PP
The
\fBpam_prompt\fR
and
\fBpam_vprompt\fR
functions are Linux\-PAM extensions\&.