centos man page for pam_vprompt

PAM_PROMPT(3)							 Linux-PAM Manual						     PAM_PROMPT(3)

NAME
       pam_prompt, pam_vprompt - interface to conversation function

SYNOPSIS
       #include <security/pam_ext.h>

       void pam_prompt(pam_handle_t *pamh, int style, char **response, const char *fmt, ...);

       void pam_vprompt(pam_handle_t *pamh, int style, char **response, const char *fmt, va_list args);

DESCRIPTION
       The pam_prompt 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, response is set to point to a string returned from the conversation function. This string is
       allocated on heap and should be freed.

RETURN VALUES
       PAM_BUF_ERR
	   Memory buffer error.

       PAM_CONV_ERR
	   Conversation failure.

       PAM_SUCCESS
	   Transaction was successful created.

       PAM_SYSTEM_ERR
	   System error.

SEE ALSO
       pam(8), pam_conv(3)

STANDARDS
       The pam_prompt and pam_vprompt functions are Linux-PAM extensions.

Linux-PAM Manual						    09/19/2013							     PAM_PROMPT(3)