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      1 /*
      2  * CDDL HEADER START
      3  *
      4  * The contents of this file are subject to the terms of the
      5  * Common Development and Distribution License (the "License").
      6  * You may not use this file except in compliance with the License.
      7  *
      8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
      9  * or http://www.opensolaris.org/os/licensing.
     10  * See the License for the specific language governing permissions
     11  * and limitations under the License.
     12  *
     13  * When distributing Covered Code, include this CDDL HEADER in each
     14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     15  * If applicable, add the following below this CDDL HEADER, with the
     16  * fields enclosed by brackets "[]" replaced with your own identifying
     17  * information: Portions Copyright [yyyy] [name of copyright owner]
     18  *
     19  * CDDL HEADER END
     20  */
     21 
     22 /*
     23  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
     24  * Use is subject to license terms.
     25  */
     26 
     27 #pragma ident	"%Z%%M%	%I%	%E% SMI"
     28 
     29 #include <stdlib.h>
     30 #include <unistd.h>
     31 #include <errno.h>
     32 #include <door.h>
     33 #include "libproc.h"
     34 
     35 /*
     36  * door() system calls -- executed by subject process
     37  */
     38 
     39 int
     40 pr_door_info(struct ps_prochandle *Pr, int did, door_info_t *di)
     41 {
     42 	sysret_t rval;			/* return value from door_info() */
     43 	argdes_t argd[6];		/* arg descriptors for door_info() */
     44 	argdes_t *adp = &argd[0];	/* first argument */
     45 	int error;
     46 
     47 	if (Pr == NULL)		/* no subject process */
     48 		return (door_info(did, di));
     49 
     50 	adp->arg_value = did;
     51 	adp->arg_object = NULL;
     52 	adp->arg_type = AT_BYVAL;
     53 	adp->arg_inout = AI_INPUT;
     54 	adp->arg_size = 0;
     55 	adp++;			/* move to door_info_t argument */
     56 
     57 	adp->arg_value = 0;
     58 	adp->arg_object = di;
     59 	adp->arg_type = AT_BYREF;
     60 	adp->arg_inout = AI_OUTPUT;
     61 	adp->arg_size = sizeof (door_info_t);
     62 	adp++;			/* move to unused argument */
     63 
     64 	adp->arg_value = 0;
     65 	adp->arg_object = NULL;
     66 	adp->arg_type = AT_BYVAL;
     67 	adp->arg_inout = AI_INPUT;
     68 	adp->arg_size = 0;
     69 	adp++;			/* move to unused argument */
     70 
     71 	adp->arg_value = 0;
     72 	adp->arg_object = NULL;
     73 	adp->arg_type = AT_BYVAL;
     74 	adp->arg_inout = AI_INPUT;
     75 	adp->arg_size = 0;
     76 	adp++;			/* move to unused argument */
     77 
     78 	adp->arg_value = 0;
     79 	adp->arg_object = NULL;
     80 	adp->arg_type = AT_BYVAL;
     81 	adp->arg_inout = AI_INPUT;
     82 	adp->arg_size = 0;
     83 	adp++;			/* move to subcode argument */
     84 
     85 	adp->arg_value = DOOR_INFO;
     86 	adp->arg_object = NULL;
     87 	adp->arg_type = AT_BYVAL;
     88 	adp->arg_inout = AI_INPUT;
     89 	adp->arg_size = 0;
     90 
     91 	error = Psyscall(Pr, &rval, SYS_door, 6, &argd[0]);
     92 
     93 	if (error) {
     94 		errno = (error < 0)? ENOSYS : error;
     95 		return (-1);
     96 	}
     97 	return (0);
     98 }
     99