1*7c478bd9Sstevel@tonic-gate /*
2*7c478bd9Sstevel@tonic-gate  * CDDL HEADER START
3*7c478bd9Sstevel@tonic-gate  *
4*7c478bd9Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
5*7c478bd9Sstevel@tonic-gate  * Common Development and Distribution License, Version 1.0 only
6*7c478bd9Sstevel@tonic-gate  * (the "License").  You may not use this file except in compliance
7*7c478bd9Sstevel@tonic-gate  * with the License.
8*7c478bd9Sstevel@tonic-gate  *
9*7c478bd9Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*7c478bd9Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
11*7c478bd9Sstevel@tonic-gate  * See the License for the specific language governing permissions
12*7c478bd9Sstevel@tonic-gate  * and limitations under the License.
13*7c478bd9Sstevel@tonic-gate  *
14*7c478bd9Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
15*7c478bd9Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*7c478bd9Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
17*7c478bd9Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
18*7c478bd9Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
19*7c478bd9Sstevel@tonic-gate  *
20*7c478bd9Sstevel@tonic-gate  * CDDL HEADER END
21*7c478bd9Sstevel@tonic-gate  */
22*7c478bd9Sstevel@tonic-gate /*
23*7c478bd9Sstevel@tonic-gate  * Copyright 1997-2003 Sun Microsystems, Inc.  All rights reserved.
24*7c478bd9Sstevel@tonic-gate  * Use is subject to license terms.
25*7c478bd9Sstevel@tonic-gate  */
26*7c478bd9Sstevel@tonic-gate 
27*7c478bd9Sstevel@tonic-gate #include <stdlib.h>
28*7c478bd9Sstevel@tonic-gate #include <unistd.h>
29*7c478bd9Sstevel@tonic-gate #include <errno.h>
30*7c478bd9Sstevel@tonic-gate #include <sys/lwp.h>
31*7c478bd9Sstevel@tonic-gate #include "libproc.h"
32*7c478bd9Sstevel@tonic-gate 
33*7c478bd9Sstevel@tonic-gate /*
34*7c478bd9Sstevel@tonic-gate  * exit() system call -- executed by subject process.
35*7c478bd9Sstevel@tonic-gate  */
36*7c478bd9Sstevel@tonic-gate int
pr_exit(struct ps_prochandle * Pr,int status)37*7c478bd9Sstevel@tonic-gate pr_exit(struct ps_prochandle *Pr, int status)
38*7c478bd9Sstevel@tonic-gate {
39*7c478bd9Sstevel@tonic-gate 	sysret_t rval;			/* return value from exit() */
40*7c478bd9Sstevel@tonic-gate 	argdes_t argd[1];		/* arg descriptors for exit() */
41*7c478bd9Sstevel@tonic-gate 	argdes_t *adp;
42*7c478bd9Sstevel@tonic-gate 	int error;
43*7c478bd9Sstevel@tonic-gate 
44*7c478bd9Sstevel@tonic-gate 	if (Pr == NULL) {		/* no subject process */
45*7c478bd9Sstevel@tonic-gate 		exit(status);
46*7c478bd9Sstevel@tonic-gate 		return (0);		/* not reached */
47*7c478bd9Sstevel@tonic-gate 	}
48*7c478bd9Sstevel@tonic-gate 
49*7c478bd9Sstevel@tonic-gate 	adp = &argd[0];		/* status argument */
50*7c478bd9Sstevel@tonic-gate 	adp->arg_value = status;
51*7c478bd9Sstevel@tonic-gate 	adp->arg_object = NULL;
52*7c478bd9Sstevel@tonic-gate 	adp->arg_type = AT_BYVAL;
53*7c478bd9Sstevel@tonic-gate 	adp->arg_inout = AI_INPUT;
54*7c478bd9Sstevel@tonic-gate 	adp->arg_size = 0;
55*7c478bd9Sstevel@tonic-gate 
56*7c478bd9Sstevel@tonic-gate 	error = Psyscall(Pr, &rval, SYS_exit, 1, &argd[0]);
57*7c478bd9Sstevel@tonic-gate 	/* actually -- never returns.  Expect ENOENT */
58*7c478bd9Sstevel@tonic-gate 
59*7c478bd9Sstevel@tonic-gate 	if (error < 0) {
60*7c478bd9Sstevel@tonic-gate 		if (errno == ENOENT)	/* expected case */
61*7c478bd9Sstevel@tonic-gate 			error = ENOENT;
62*7c478bd9Sstevel@tonic-gate 		else
63*7c478bd9Sstevel@tonic-gate 			error = ENOSYS;
64*7c478bd9Sstevel@tonic-gate 	}
65*7c478bd9Sstevel@tonic-gate 
66*7c478bd9Sstevel@tonic-gate 	if (error == 0)		/* can't happen? */
67*7c478bd9Sstevel@tonic-gate 		return (rval.sys_rval1);
68*7c478bd9Sstevel@tonic-gate 
69*7c478bd9Sstevel@tonic-gate 	if (error == ENOENT)	/* expected case */
70*7c478bd9Sstevel@tonic-gate 		return (0);
71*7c478bd9Sstevel@tonic-gate 
72*7c478bd9Sstevel@tonic-gate 	errno = error;
73*7c478bd9Sstevel@tonic-gate 	return (-1);
74*7c478bd9Sstevel@tonic-gate }
75*7c478bd9Sstevel@tonic-gate 
76*7c478bd9Sstevel@tonic-gate /*
77*7c478bd9Sstevel@tonic-gate  * lwp_exit() system call -- executed by subject lwp.
78*7c478bd9Sstevel@tonic-gate  */
79*7c478bd9Sstevel@tonic-gate int
pr_lwp_exit(struct ps_prochandle * Pr)80*7c478bd9Sstevel@tonic-gate pr_lwp_exit(struct ps_prochandle *Pr)
81*7c478bd9Sstevel@tonic-gate {
82*7c478bd9Sstevel@tonic-gate 	sysret_t rval;			/* return value from lwp_exit() */
83*7c478bd9Sstevel@tonic-gate 	int error;
84*7c478bd9Sstevel@tonic-gate 
85*7c478bd9Sstevel@tonic-gate 	if (Pr == NULL) {		/* no subject process */
86*7c478bd9Sstevel@tonic-gate 		(void) syscall(SYS_lwp_exit);
87*7c478bd9Sstevel@tonic-gate 		return (0);		/* not reached */
88*7c478bd9Sstevel@tonic-gate 	}
89*7c478bd9Sstevel@tonic-gate 
90*7c478bd9Sstevel@tonic-gate 	error = Psyscall(Pr, &rval, SYS_lwp_exit, 0, NULL);
91*7c478bd9Sstevel@tonic-gate 	/* actually -- never returns.  Expect ENOENT */
92*7c478bd9Sstevel@tonic-gate 
93*7c478bd9Sstevel@tonic-gate 	if (error < 0) {
94*7c478bd9Sstevel@tonic-gate 		if (errno == ENOENT)	/* expected case */
95*7c478bd9Sstevel@tonic-gate 			error = ENOENT;
96*7c478bd9Sstevel@tonic-gate 		else
97*7c478bd9Sstevel@tonic-gate 			error = ENOSYS;
98*7c478bd9Sstevel@tonic-gate 	}
99*7c478bd9Sstevel@tonic-gate 
100*7c478bd9Sstevel@tonic-gate 	if (error == 0)		/* can't happen? */
101*7c478bd9Sstevel@tonic-gate 		return (rval.sys_rval1);
102*7c478bd9Sstevel@tonic-gate 
103*7c478bd9Sstevel@tonic-gate 	if (error == ENOENT)	/* expected case */
104*7c478bd9Sstevel@tonic-gate 		return (0);
105*7c478bd9Sstevel@tonic-gate 
106*7c478bd9Sstevel@tonic-gate 	errno = error;
107*7c478bd9Sstevel@tonic-gate 	return (-1);
108*7c478bd9Sstevel@tonic-gate }
109