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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, Version 1.0 only
      6  * (the "License").  You may not use this file except in compliance
      7  * with the License.
      8  *
      9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
     10  * or http://www.opensolaris.org/os/licensing.
     11  * See the License for the specific language governing permissions
     12  * and limitations under the License.
     13  *
     14  * When distributing Covered Code, include this CDDL HEADER in each
     15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     16  * If applicable, add the following below this CDDL HEADER, with the
     17  * fields enclosed by brackets "[]" replaced with your own identifying
     18  * information: Portions Copyright [yyyy] [name of copyright owner]
     19  *
     20  * CDDL HEADER END
     21  */
     22 /*
     23  * Copyright (c) 1998-2001 by Sun Microsystems, Inc.
     24  * All rights reserved.
     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 <sys/types.h>
     33 #include <sys/mman.h>
     34 #include "libproc.h"
     35 
     36 /*
     37  * memcntl() system call -- executed by subject process
     38  */
     39 
     40 int
     41 pr_memcntl(struct ps_prochandle *Pr,
     42 	caddr_t addr, size_t len, int cmd, caddr_t arg, int attr, int mask)
     43 {
     44 	sysret_t rval;			/* return value from memcntl() */
     45 	argdes_t argd[6];		/* arg descriptors for memcntl() */
     46 	argdes_t *adp;
     47 	int error;
     48 
     49 	if (Pr == NULL)		/* no subject process */
     50 		return (memcntl(addr, len, cmd, arg, attr, mask));
     51 
     52 	adp = &argd[0];		/* addr argument */
     53 	adp->arg_value = (uintptr_t)addr;
     54 	adp->arg_object = NULL;
     55 	adp->arg_type = AT_BYVAL;
     56 	adp->arg_inout = AI_INPUT;
     57 	adp->arg_size = 0;
     58 
     59 	adp++;			/* len argument */
     60 	adp->arg_value = len;
     61 	adp->arg_object = NULL;
     62 	adp->arg_type = AT_BYVAL;
     63 	adp->arg_inout = AI_INPUT;
     64 	adp->arg_size = 0;
     65 
     66 	adp++;			/* cmd argument */
     67 	adp->arg_value = cmd;
     68 	adp->arg_object = NULL;
     69 	adp->arg_type = AT_BYVAL;
     70 	adp->arg_inout = AI_INPUT;
     71 	adp->arg_size = 0;
     72 
     73 	adp++;			/* arg argument */
     74 	if (cmd == MC_HAT_ADVISE) {
     75 		adp->arg_value = 0;
     76 		adp->arg_object = arg;
     77 		adp->arg_type = AT_BYREF;
     78 		adp->arg_inout = AI_INPUT;
     79 #ifdef _LP64
     80 		if (Pstatus(Pr)->pr_dmodel == PR_MODEL_ILP32)
     81 			adp->arg_size = sizeof (struct memcntl_mha32);
     82 		else
     83 			adp->arg_size = sizeof (struct memcntl_mha);
     84 #else
     85 		adp->arg_size = sizeof (struct memcntl_mha);
     86 #endif
     87 	} else {
     88 		adp->arg_value = (uintptr_t)arg;
     89 		adp->arg_object = NULL;
     90 		adp->arg_type = AT_BYVAL;
     91 		adp->arg_inout = AI_INPUT;
     92 		adp->arg_size = 0;
     93 	}
     94 
     95 	adp++;			/* attr argument */
     96 	adp->arg_value = attr;
     97 	adp->arg_object = NULL;
     98 	adp->arg_type = AT_BYVAL;
     99 	adp->arg_inout = AI_INPUT;
    100 	adp->arg_size = 0;
    101 
    102 	adp++;			/* mask argument */
    103 	adp->arg_value = mask;
    104 	adp->arg_object = NULL;
    105 	adp->arg_type = AT_BYVAL;
    106 	adp->arg_inout = AI_INPUT;
    107 	adp->arg_size = 0;
    108 
    109 	error = Psyscall(Pr, &rval, SYS_memcntl, 6, &argd[0]);
    110 
    111 	if (error) {
    112 		errno = (error > 0)? error : ENOSYS;
    113 		return (-1);
    114 	}
    115 	return (0);
    116 }
    117