xref: /onnv-gate/usr/src/lib/libproc/common/pr_getitimer.c (revision 0:68f95e015346)
1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate  * CDDL HEADER START
3*0Sstevel@tonic-gate  *
4*0Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
5*0Sstevel@tonic-gate  * Common Development and Distribution License, Version 1.0 only
6*0Sstevel@tonic-gate  * (the "License").  You may not use this file except in compliance
7*0Sstevel@tonic-gate  * with the License.
8*0Sstevel@tonic-gate  *
9*0Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*0Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
11*0Sstevel@tonic-gate  * See the License for the specific language governing permissions
12*0Sstevel@tonic-gate  * and limitations under the License.
13*0Sstevel@tonic-gate  *
14*0Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
15*0Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*0Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
17*0Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
18*0Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
19*0Sstevel@tonic-gate  *
20*0Sstevel@tonic-gate  * CDDL HEADER END
21*0Sstevel@tonic-gate  */
22*0Sstevel@tonic-gate /*
23*0Sstevel@tonic-gate  * Copyright (c) 1997-2000 by Sun Microsystems, Inc.
24*0Sstevel@tonic-gate  * All rights reserved.
25*0Sstevel@tonic-gate  */
26*0Sstevel@tonic-gate 
27*0Sstevel@tonic-gate #pragma ident	"%Z%%M%	%I%	%E% SMI"
28*0Sstevel@tonic-gate 
29*0Sstevel@tonic-gate #include <sys/isa_defs.h>
30*0Sstevel@tonic-gate #include <stdlib.h>
31*0Sstevel@tonic-gate #include <unistd.h>
32*0Sstevel@tonic-gate #include <errno.h>
33*0Sstevel@tonic-gate #include "libproc.h"
34*0Sstevel@tonic-gate 
35*0Sstevel@tonic-gate /*
36*0Sstevel@tonic-gate  * getitimer() system call -- executed by victim process.
37*0Sstevel@tonic-gate  */
38*0Sstevel@tonic-gate int
pr_getitimer(struct ps_prochandle * Pr,int which,struct itimerval * itv)39*0Sstevel@tonic-gate pr_getitimer(struct ps_prochandle *Pr, int which, struct itimerval *itv)
40*0Sstevel@tonic-gate {
41*0Sstevel@tonic-gate 	sysret_t rval;		/* return value from getitimer() */
42*0Sstevel@tonic-gate 	argdes_t argd[2];	/* arg descriptors for getitimer() */
43*0Sstevel@tonic-gate 	argdes_t *adp;
44*0Sstevel@tonic-gate 	int error;
45*0Sstevel@tonic-gate #ifdef _LP64
46*0Sstevel@tonic-gate 	int victim32 = (Pstatus(Pr)->pr_dmodel == PR_MODEL_ILP32);
47*0Sstevel@tonic-gate 	struct itimerval32 itimerval32;
48*0Sstevel@tonic-gate #endif
49*0Sstevel@tonic-gate 
50*0Sstevel@tonic-gate 	if (Pr == NULL)		/* no victim process */
51*0Sstevel@tonic-gate 		return (getitimer(which, itv));
52*0Sstevel@tonic-gate 
53*0Sstevel@tonic-gate 	adp = &argd[0];		/* which argument */
54*0Sstevel@tonic-gate 	adp->arg_value = which;
55*0Sstevel@tonic-gate 	adp->arg_type = AT_BYVAL;
56*0Sstevel@tonic-gate 	adp->arg_inout = AI_INPUT;
57*0Sstevel@tonic-gate 	adp->arg_object = NULL;
58*0Sstevel@tonic-gate 	adp->arg_size = 0;
59*0Sstevel@tonic-gate 
60*0Sstevel@tonic-gate 	adp++;			/* itv argument */
61*0Sstevel@tonic-gate 	adp->arg_value = 0;
62*0Sstevel@tonic-gate 	adp->arg_type = AT_BYREF;
63*0Sstevel@tonic-gate 	adp->arg_inout = AI_OUTPUT;
64*0Sstevel@tonic-gate #ifdef _LP64
65*0Sstevel@tonic-gate 	if (victim32) {
66*0Sstevel@tonic-gate 		adp->arg_object = &itimerval32;
67*0Sstevel@tonic-gate 		adp->arg_size = sizeof (itimerval32);
68*0Sstevel@tonic-gate 	} else {
69*0Sstevel@tonic-gate 		adp->arg_object = itv;
70*0Sstevel@tonic-gate 		adp->arg_size = sizeof (*itv);
71*0Sstevel@tonic-gate 	}
72*0Sstevel@tonic-gate #else	/* _LP64 */
73*0Sstevel@tonic-gate 	adp->arg_object = itv;
74*0Sstevel@tonic-gate 	adp->arg_size = sizeof (*itv);
75*0Sstevel@tonic-gate #endif	/* _LP64 */
76*0Sstevel@tonic-gate 
77*0Sstevel@tonic-gate 	error = Psyscall(Pr, &rval, SYS_getitimer, 2, &argd[0]);
78*0Sstevel@tonic-gate 
79*0Sstevel@tonic-gate 	if (error) {
80*0Sstevel@tonic-gate 		errno = (error > 0)? error : ENOSYS;
81*0Sstevel@tonic-gate 		return (-1);
82*0Sstevel@tonic-gate 	}
83*0Sstevel@tonic-gate #ifdef _LP64
84*0Sstevel@tonic-gate 	if (victim32) {
85*0Sstevel@tonic-gate 		ITIMERVAL32_TO_ITIMERVAL(itv, &itimerval32);
86*0Sstevel@tonic-gate 	}
87*0Sstevel@tonic-gate #endif	/* _LP64 */
88*0Sstevel@tonic-gate 	return (rval.sys_rval1);
89*0Sstevel@tonic-gate }
90*0Sstevel@tonic-gate 
91*0Sstevel@tonic-gate /*
92*0Sstevel@tonic-gate  * setitimer() system call -- executed by victim process.
93*0Sstevel@tonic-gate  */
94*0Sstevel@tonic-gate int
pr_setitimer(struct ps_prochandle * Pr,int which,const struct itimerval * itv,struct itimerval * oitv)95*0Sstevel@tonic-gate pr_setitimer(struct ps_prochandle *Pr,
96*0Sstevel@tonic-gate 	int which, const struct itimerval *itv, struct itimerval *oitv)
97*0Sstevel@tonic-gate {
98*0Sstevel@tonic-gate 	sysret_t rval;		/* return value from setitimer() */
99*0Sstevel@tonic-gate 	argdes_t argd[3];	/* arg descriptors for setitimer() */
100*0Sstevel@tonic-gate 	argdes_t *adp;
101*0Sstevel@tonic-gate 	int error;
102*0Sstevel@tonic-gate #ifdef _LP64
103*0Sstevel@tonic-gate 	int victim32 = (Pstatus(Pr)->pr_dmodel == PR_MODEL_ILP32);
104*0Sstevel@tonic-gate 	struct itimerval32 itimerval32;
105*0Sstevel@tonic-gate 	struct itimerval32 oitimerval32;
106*0Sstevel@tonic-gate #endif	/* _LP64 */
107*0Sstevel@tonic-gate 
108*0Sstevel@tonic-gate 	if (Pr == NULL)		/* no victim process */
109*0Sstevel@tonic-gate 		return (setitimer(which, (struct itimerval *)itv, oitv));
110*0Sstevel@tonic-gate 
111*0Sstevel@tonic-gate 	adp = &argd[0];		/* which argument */
112*0Sstevel@tonic-gate 	adp->arg_value = which;
113*0Sstevel@tonic-gate 	adp->arg_type = AT_BYVAL;
114*0Sstevel@tonic-gate 	adp->arg_inout = AI_INPUT;
115*0Sstevel@tonic-gate 	adp->arg_object = NULL;
116*0Sstevel@tonic-gate 	adp->arg_size = 0;
117*0Sstevel@tonic-gate 
118*0Sstevel@tonic-gate 	adp++;			/* itv argument */
119*0Sstevel@tonic-gate 	adp->arg_value = 0;
120*0Sstevel@tonic-gate 	adp->arg_type = AT_BYREF;
121*0Sstevel@tonic-gate 	adp->arg_inout = AI_INPUT;
122*0Sstevel@tonic-gate #ifdef _LP64
123*0Sstevel@tonic-gate 	if (victim32) {
124*0Sstevel@tonic-gate 		ITIMERVAL_TO_ITIMERVAL32(&itimerval32, itv);
125*0Sstevel@tonic-gate 		adp->arg_object = (void *)&itimerval32;
126*0Sstevel@tonic-gate 		adp->arg_size = sizeof (itimerval32);
127*0Sstevel@tonic-gate 	} else {
128*0Sstevel@tonic-gate 		adp->arg_object = (void *)itv;
129*0Sstevel@tonic-gate 		adp->arg_size = sizeof (*itv);
130*0Sstevel@tonic-gate 	}
131*0Sstevel@tonic-gate #else	/* _LP64 */
132*0Sstevel@tonic-gate 	adp->arg_object = (void *)itv;
133*0Sstevel@tonic-gate 	adp->arg_size = sizeof (*itv);
134*0Sstevel@tonic-gate #endif	/* _LP64 */
135*0Sstevel@tonic-gate 
136*0Sstevel@tonic-gate 	adp++;			/* oitv argument */
137*0Sstevel@tonic-gate 	adp->arg_value = 0;
138*0Sstevel@tonic-gate 	if (oitv == NULL) {
139*0Sstevel@tonic-gate 		adp->arg_type = AT_BYVAL;
140*0Sstevel@tonic-gate 		adp->arg_inout = AI_INPUT;
141*0Sstevel@tonic-gate 		adp->arg_object = NULL;
142*0Sstevel@tonic-gate 		adp->arg_size = 0;
143*0Sstevel@tonic-gate 	} else {
144*0Sstevel@tonic-gate 		adp->arg_type = AT_BYREF;
145*0Sstevel@tonic-gate 		adp->arg_inout = AI_OUTPUT;
146*0Sstevel@tonic-gate #ifdef _LP64
147*0Sstevel@tonic-gate 		if (victim32) {
148*0Sstevel@tonic-gate 			adp->arg_object = (void *)&oitimerval32;
149*0Sstevel@tonic-gate 			adp->arg_size = sizeof (oitimerval32);
150*0Sstevel@tonic-gate 		} else {
151*0Sstevel@tonic-gate 			adp->arg_object = oitv;
152*0Sstevel@tonic-gate 			adp->arg_size = sizeof (*oitv);
153*0Sstevel@tonic-gate 		}
154*0Sstevel@tonic-gate #else	/* _LP64 */
155*0Sstevel@tonic-gate 		adp->arg_object = oitv;
156*0Sstevel@tonic-gate 		adp->arg_size = sizeof (*oitv);
157*0Sstevel@tonic-gate #endif	/* _LP64 */
158*0Sstevel@tonic-gate 	}
159*0Sstevel@tonic-gate 
160*0Sstevel@tonic-gate 	error = Psyscall(Pr, &rval, SYS_setitimer, 3, &argd[0]);
161*0Sstevel@tonic-gate 
162*0Sstevel@tonic-gate 	if (error) {
163*0Sstevel@tonic-gate 		errno = (error > 0)? error : ENOSYS;
164*0Sstevel@tonic-gate 		return (-1);
165*0Sstevel@tonic-gate 	}
166*0Sstevel@tonic-gate #ifdef _LP64
167*0Sstevel@tonic-gate 	if (victim32 && oitv != NULL) {
168*0Sstevel@tonic-gate 		ITIMERVAL32_TO_ITIMERVAL(oitv, &oitimerval32);
169*0Sstevel@tonic-gate 	}
170*0Sstevel@tonic-gate #endif	/* _LP64 */
171*0Sstevel@tonic-gate 	return (rval.sys_rval1);
172*0Sstevel@tonic-gate }
173