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PAM_GET_USER(3)	       FreeBSD 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 spec-
     ified 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, and	the corresponding PAM item is updated.

     The prompt	argument specifies a prompt to use if no user name is cached.
     If	it is NULL, the	PAM_USER_PROMPT	item will be used.  If that item is
     also NULL,	a hardcoded default prompt will	be used.  Additionally,	when
     pam_get_user() is called from a service module, the prompt	may be
     affected by module	options	as described below.  The prompt	is then
     expanded using openpam_subst(3) before it is passed to the	conversation
     function.

MODULE OPTIONS
     When called by a service module, pam_get_user() will recognize the	fol-
     lowing module options:

     user_prompt	 Prompt	to use when asking for the user	name.  This
			 option	overrides both the prompt argument and the
			 PAM_USER_PROMPT item.

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
     openpam_get_option(3), openpam_subst(3), pam(3), pam_conv(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.

     The OpenPAM library is maintained by Dag-Erling Smorgrav <des@des.no>.

FreeBSD	9.2		       September 7, 2013		   FreeBSD 9.2

NAME | LIBRARY | SYNOPSIS | DESCRIPTION | MODULE OPTIONS | RETURN VALUES | SEE ALSO | STANDARDS | AUTHORS

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