/*

 * 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.

 */

/*	Copyright (c) 1988 AT&T	*/

/*	  All Rights Reserved  	*/

#pragma ident	"%Z%%M%	%I%	%E% SMI"

#include "lint.h"

#include <sys/types.h>

#include <sys/procset.h>

#include <sys/priocntl.h>

#include <stdarg.h>

#include <errno.h>

/*

 * The declarations of __priocntlset() and __priocntl() were in prior releases

 * in <sys/priocntl.h>.  They are used to define PC_VERSION at compile time,

 * based on the contents of the header file.  This behavior is now changed.

 * Old binaries call __priocntl() and __priocntlset() instead of priocntl()

 * and priocntlset().  New binaries call priocntl() and priocntlset().

 */

/*

 * defined in priocntlset.s

 */

extern long __priocntlset(int, procset_t *, int, caddr_t, ...);

static int pc_vaargs2parms(va_list valist, pc_vaparms_t *vp);

long

__priocntl(int pc_version, idtype_t idtype, id_t id, int cmd, caddr_t arg)

{

	procset_t	procset;

	setprocset(&procset, POP_AND, idtype, id, P_ALL, 0);

	return (__priocntlset(pc_version, &procset, cmd, arg, 0));

}

/*VARARGS3*/

long

priocntl(idtype_t idtype, id_t id, int cmd, ...)

{

	procset_t	procset;

	va_list		valist;

	pc_vaparms_t	varparms;

	caddr_t		arg;

	int		error;

	setprocset(&procset, POP_AND, idtype, id, P_ALL, 0);

	va_start(valist, cmd);

	arg = va_arg(valist, caddr_t);

	if (cmd != PC_GETXPARMS && cmd != PC_SETXPARMS) {

		va_end(valist);

		return (__priocntlset(PC_VERSION, &procset, cmd, arg, 0));

	}

	error = pc_vaargs2parms(valist, &varparms);

	va_end(valist);

	if (error) {

		errno = error;

		return (-1);

	}

	return (__priocntlset(PC_VERSION, &procset, cmd, arg, &varparms));

}

/*VARARGS2*/

long

priocntlset(procset_t *procsetp, int cmd, ...)

{

	va_list		valist;

	pc_vaparms_t	varparms;

	caddr_t		arg;

	int		error;

	va_start(valist, cmd);

	arg = va_arg(valist, caddr_t);

	if (cmd != PC_GETXPARMS && cmd != PC_SETXPARMS) {

		va_end(valist);

		return (__priocntlset(PC_VERSION, procsetp, cmd, arg, 0));

	}

	error = pc_vaargs2parms(valist, &varparms);

	va_end(valist);

	if (error) {

		errno = error;

		return (-1);

	}

	return (__priocntlset(PC_VERSION, procsetp, cmd, arg, &varparms));

}

static int

pc_vaargs2parms(va_list valist, pc_vaparms_t *vp)

{

	pc_vaparm_t	*vpp = &vp->pc_parms[0];

	int		key;

	for (vp->pc_vaparmscnt = 0;

	    (key = va_arg(valist, int)) != PC_KY_NULL; vpp++) {

		if (++vp->pc_vaparmscnt > PC_VAPARMCNT)

			return (EINVAL);

		vpp->pc_key = key;

		vpp->pc_parm = va_arg(valist, uintptr_t);

	}

	return (0);

}