/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */

/*
 * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <door.h>
#include "libproc.h"

/*
 * door() system calls -- executed by subject process
 */

int
pr_door_info(struct ps_prochandle *Pr, int did, door_info_t *di)
{
        sysret_t rval;                  /* return value from door_info() */
        argdes_t argd[6];               /* arg descriptors for door_info() */
        argdes_t *adp = &argd[0];       /* first argument */
        int error;

        if (Pr == NULL)         /* no subject process */
                return (door_info(did, di));

        adp->arg_value = did;
        adp->arg_object = NULL;
        adp->arg_type = AT_BYVAL;
        adp->arg_inout = AI_INPUT;
        adp->arg_size = 0;
        adp++;                  /* move to door_info_t argument */

        adp->arg_value = 0;
        adp->arg_object = di;
        adp->arg_type = AT_BYREF;
        adp->arg_inout = AI_OUTPUT;
        adp->arg_size = sizeof (door_info_t);
        adp++;                  /* move to unused argument */

        adp->arg_value = 0;
        adp->arg_object = NULL;
        adp->arg_type = AT_BYVAL;
        adp->arg_inout = AI_INPUT;
        adp->arg_size = 0;
        adp++;                  /* move to unused argument */

        adp->arg_value = 0;
        adp->arg_object = NULL;
        adp->arg_type = AT_BYVAL;
        adp->arg_inout = AI_INPUT;
        adp->arg_size = 0;
        adp++;                  /* move to unused argument */

        adp->arg_value = 0;
        adp->arg_object = NULL;
        adp->arg_type = AT_BYVAL;
        adp->arg_inout = AI_INPUT;
        adp->arg_size = 0;
        adp++;                  /* move to subcode argument */

        adp->arg_value = DOOR_INFO;
        adp->arg_object = NULL;
        adp->arg_type = AT_BYVAL;
        adp->arg_inout = AI_INPUT;
        adp->arg_size = 0;

        error = Psyscall(Pr, &rval, SYS_door, 6, &argd[0]);

        if (error) {
                errno = (error < 0)? ENOSYS : error;
                return (-1);
        }
        return (0);
}