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 <stdlib.h>
30#include <unistd.h>
31#include <errno.h>
32#include <sys/mman.h>
33#include "libproc.h"
34
35/*
36 * mmap() system call -- executed by subject process
37 */
38void *
39pr_mmap(struct ps_prochandle *Pr,
40	void *addr, size_t len, int prot, int flags, int fd, off_t off)
41{
42	sysret_t rval;			/* return value from mmap() */
43	argdes_t argd[6];		/* arg descriptors for mmap() */
44	argdes_t *adp;
45	int error;
46
47	if (Pr == NULL)		/* no subject process */
48		return (mmap(addr, len, prot, flags, fd, off));
49
50	adp = &argd[0];		/* addr argument */
51	adp->arg_value = (long)addr;
52	adp->arg_object = NULL;
53	adp->arg_type = AT_BYVAL;
54	adp->arg_inout = AI_INPUT;
55	adp->arg_size = 0;
56
57	adp++;			/* len argument */
58	adp->arg_value = (long)len;
59	adp->arg_object = NULL;
60	adp->arg_type = AT_BYVAL;
61	adp->arg_inout = AI_INPUT;
62	adp->arg_size = 0;
63
64	adp++;			/* prot argument */
65	adp->arg_value = (long)prot;
66	adp->arg_object = NULL;
67	adp->arg_type = AT_BYVAL;
68	adp->arg_inout = AI_INPUT;
69	adp->arg_size = 0;
70
71	adp++;			/* flags argument */
72	adp->arg_value = (long)(_MAP_NEW|flags);
73	adp->arg_object = NULL;
74	adp->arg_type = AT_BYVAL;
75	adp->arg_inout = AI_INPUT;
76	adp->arg_size = 0;
77
78	adp++;			/* fd argument */
79	adp->arg_value = (long)fd;
80	adp->arg_object = NULL;
81	adp->arg_type = AT_BYVAL;
82	adp->arg_inout = AI_INPUT;
83	adp->arg_size = 0;
84
85	adp++;			/* off argument */
86	adp->arg_value = (long)off;
87	adp->arg_object = NULL;
88	adp->arg_type = AT_BYVAL;
89	adp->arg_inout = AI_INPUT;
90	adp->arg_size = 0;
91
92	error = Psyscall(Pr, &rval, SYS_mmap, 6, &argd[0]);
93
94	if (error) {
95		errno = (error > 0)? error : ENOSYS;
96		return ((void *)(-1));
97	}
98	return ((void *)rval.sys_rval1);
99}
100
101/*
102 * munmap() system call -- executed by subject process
103 */
104int
105pr_munmap(struct ps_prochandle *Pr, void *addr, size_t len)
106{
107	sysret_t rval;			/* return value from munmap() */
108	argdes_t argd[2];		/* arg descriptors for munmap() */
109	argdes_t *adp;
110	int error;
111
112	if (Pr == NULL)		/* no subject process */
113		return (munmap(addr, len));
114
115	adp = &argd[0];		/* addr argument */
116	adp->arg_value = (long)addr;
117	adp->arg_object = NULL;
118	adp->arg_type = AT_BYVAL;
119	adp->arg_inout = AI_INPUT;
120	adp->arg_size = 0;
121
122	adp++;			/* len argument */
123	adp->arg_value = (long)len;
124	adp->arg_object = NULL;
125	adp->arg_type = AT_BYVAL;
126	adp->arg_inout = AI_INPUT;
127	adp->arg_size = 0;
128
129	error = Psyscall(Pr, &rval, SYS_munmap, 2, &argd[0]);
130
131	if (error) {
132		errno = (error > 0)? error : ENOSYS;
133		return (-1);
134	}
135	return (rval.sys_rval1);
136}
137
138/*
139 * zmap() -- convenience function; mmap(MAP_ANON) executed by subject process.
140 */
141void *
142pr_zmap(struct ps_prochandle *Pr, void *addr, size_t len, int prot, int flags)
143{
144	return (pr_mmap(Pr, addr, len, prot, flags | MAP_ANON, -1, (off_t)0));
145}
146