/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (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 (c) 1998-2001 by Sun Microsystems, Inc.
 * All rights reserved.
 */

#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/mman.h>
#include "libproc.h"

/*
 * memcntl() system call -- executed by subject process
 */

int
pr_memcntl(struct ps_prochandle *Pr,
        caddr_t addr, size_t len, int cmd, caddr_t arg, int attr, int mask)
{
        sysret_t rval;                  /* return value from memcntl() */
        argdes_t argd[6];               /* arg descriptors for memcntl() */
        argdes_t *adp;
        int error;

        if (Pr == NULL)         /* no subject process */
                return (memcntl(addr, len, cmd, arg, attr, mask));

        adp = &argd[0];         /* addr argument */
        adp->arg_value = (uintptr_t)addr;
        adp->arg_object = NULL;
        adp->arg_type = AT_BYVAL;
        adp->arg_inout = AI_INPUT;
        adp->arg_size = 0;

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

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

        adp++;                  /* arg argument */
        if (cmd == MC_HAT_ADVISE) {
                adp->arg_value = 0;
                adp->arg_object = arg;
                adp->arg_type = AT_BYREF;
                adp->arg_inout = AI_INPUT;
#ifdef _LP64
                if (Pstatus(Pr)->pr_dmodel == PR_MODEL_ILP32)
                        adp->arg_size = sizeof (struct memcntl_mha32);
                else
                        adp->arg_size = sizeof (struct memcntl_mha);
#else
                adp->arg_size = sizeof (struct memcntl_mha);
#endif
        } else {
                adp->arg_value = (uintptr_t)arg;
                adp->arg_object = NULL;
                adp->arg_type = AT_BYVAL;
                adp->arg_inout = AI_INPUT;
                adp->arg_size = 0;
        }

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

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

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

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