PAM_GET_USER(3)          BSD Library Functions Manual          PAM_GET_USER(3)

NAME
     pam_get_user -- retrieve user name

LIBRARY
     Pluggable Authentication Module Library (libpam, -lpam)

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

     int
     pam_get_user(pam_handle_t *pamh, const char **user, const char *prompt);

DESCRIPTION
     The pam_get_user function returns the name of the target user, as speci-
     fied to pam_start(3).  If no user was specified, nor set using
     pam_set_item(3), pam_get_user will prompt for a user name.  Either way, a
     pointer to the user name is stored in the location pointed to by the user
     argument.

     The prompt argument specifies a prompt to use if no user name is cached.
     If it is NULL, the PAM_USER_PROMPT will be used.  If that item is also
     NULL, a hardcoded default prompt will be used.

RETURN VALUES
     The pam_get_user 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_get_authtok(3), pam_get_item(3), pam_set_item(3),
     pam_start(3), pam_strerror(3)

STANDARDS
     X/Open Single Sign-On Service (XSSO) - Pluggable Authentication Modules,
     June 1997.

AUTHORS
     The pam_get_user 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 21, 2007                           BSD