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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) 1997-2000 by Sun Microsystems, Inc.
     24  * All rights reserved.
     25  */
     26 
     27 #pragma ident	"%Z%%M%	%I%	%E% SMI"
     28 
     29 #include <sys/isa_defs.h>
     30 #include <stdlib.h>
     31 #include <unistd.h>
     32 #include <errno.h>
     33 #include "libproc.h"
     34 
     35 /*
     36  * getitimer() system call -- executed by victim process.
     37  */
     38 int
     39 pr_getitimer(struct ps_prochandle *Pr, int which, struct itimerval *itv)
     40 {
     41 	sysret_t rval;		/* return value from getitimer() */
     42 	argdes_t argd[2];	/* arg descriptors for getitimer() */
     43 	argdes_t *adp;
     44 	int error;
     45 #ifdef _LP64
     46 	int victim32 = (Pstatus(Pr)->pr_dmodel == PR_MODEL_ILP32);
     47 	struct itimerval32 itimerval32;
     48 #endif
     49 
     50 	if (Pr == NULL)		/* no victim process */
     51 		return (getitimer(which, itv));
     52 
     53 	adp = &argd[0];		/* which argument */
     54 	adp->arg_value = which;
     55 	adp->arg_type = AT_BYVAL;
     56 	adp->arg_inout = AI_INPUT;
     57 	adp->arg_object = NULL;
     58 	adp->arg_size = 0;
     59 
     60 	adp++;			/* itv argument */
     61 	adp->arg_value = 0;
     62 	adp->arg_type = AT_BYREF;
     63 	adp->arg_inout = AI_OUTPUT;
     64 #ifdef _LP64
     65 	if (victim32) {
     66 		adp->arg_object = &itimerval32;
     67 		adp->arg_size = sizeof (itimerval32);
     68 	} else {
     69 		adp->arg_object = itv;
     70 		adp->arg_size = sizeof (*itv);
     71 	}
     72 #else	/* _LP64 */
     73 	adp->arg_object = itv;
     74 	adp->arg_size = sizeof (*itv);
     75 #endif	/* _LP64 */
     76 
     77 	error = Psyscall(Pr, &rval, SYS_getitimer, 2, &argd[0]);
     78 
     79 	if (error) {
     80 		errno = (error > 0)? error : ENOSYS;
     81 		return (-1);
     82 	}
     83 #ifdef _LP64
     84 	if (victim32) {
     85 		ITIMERVAL32_TO_ITIMERVAL(itv, &itimerval32);
     86 	}
     87 #endif	/* _LP64 */
     88 	return (rval.sys_rval1);
     89 }
     90 
     91 /*
     92  * setitimer() system call -- executed by victim process.
     93  */
     94 int
     95 pr_setitimer(struct ps_prochandle *Pr,
     96 	int which, const struct itimerval *itv, struct itimerval *oitv)
     97 {
     98 	sysret_t rval;		/* return value from setitimer() */
     99 	argdes_t argd[3];	/* arg descriptors for setitimer() */
    100 	argdes_t *adp;
    101 	int error;
    102 #ifdef _LP64
    103 	int victim32 = (Pstatus(Pr)->pr_dmodel == PR_MODEL_ILP32);
    104 	struct itimerval32 itimerval32;
    105 	struct itimerval32 oitimerval32;
    106 #endif	/* _LP64 */
    107 
    108 	if (Pr == NULL)		/* no victim process */
    109 		return (setitimer(which, (struct itimerval *)itv, oitv));
    110 
    111 	adp = &argd[0];		/* which argument */
    112 	adp->arg_value = which;
    113 	adp->arg_type = AT_BYVAL;
    114 	adp->arg_inout = AI_INPUT;
    115 	adp->arg_object = NULL;
    116 	adp->arg_size = 0;
    117 
    118 	adp++;			/* itv argument */
    119 	adp->arg_value = 0;
    120 	adp->arg_type = AT_BYREF;
    121 	adp->arg_inout = AI_INPUT;
    122 #ifdef _LP64
    123 	if (victim32) {
    124 		ITIMERVAL_TO_ITIMERVAL32(&itimerval32, itv);
    125 		adp->arg_object = (void *)&itimerval32;
    126 		adp->arg_size = sizeof (itimerval32);
    127 	} else {
    128 		adp->arg_object = (void *)itv;
    129 		adp->arg_size = sizeof (*itv);
    130 	}
    131 #else	/* _LP64 */
    132 	adp->arg_object = (void *)itv;
    133 	adp->arg_size = sizeof (*itv);
    134 #endif	/* _LP64 */
    135 
    136 	adp++;			/* oitv argument */
    137 	adp->arg_value = 0;
    138 	if (oitv == NULL) {
    139 		adp->arg_type = AT_BYVAL;
    140 		adp->arg_inout = AI_INPUT;
    141 		adp->arg_object = NULL;
    142 		adp->arg_size = 0;
    143 	} else {
    144 		adp->arg_type = AT_BYREF;
    145 		adp->arg_inout = AI_OUTPUT;
    146 #ifdef _LP64
    147 		if (victim32) {
    148 			adp->arg_object = (void *)&oitimerval32;
    149 			adp->arg_size = sizeof (oitimerval32);
    150 		} else {
    151 			adp->arg_object = oitv;
    152 			adp->arg_size = sizeof (*oitv);
    153 		}
    154 #else	/* _LP64 */
    155 		adp->arg_object = oitv;
    156 		adp->arg_size = sizeof (*oitv);
    157 #endif	/* _LP64 */
    158 	}
    159 
    160 	error = Psyscall(Pr, &rval, SYS_setitimer, 3, &argd[0]);
    161 
    162 	if (error) {
    163 		errno = (error > 0)? error : ENOSYS;
    164 		return (-1);
    165 	}
    166 #ifdef _LP64
    167 	if (victim32 && oitv != NULL) {
    168 		ITIMERVAL32_TO_ITIMERVAL(oitv, &oitimerval32);
    169 	}
    170 #endif	/* _LP64 */
    171 	return (rval.sys_rval1);
    172 }
    173