1 /** $MirOS: src/sys/compat/common/vm_43.c,v 1.2 2005/03/06 21:27:29 tg Exp $ */
2 /* $OpenBSD: vm_43.c,v 1.5 2003/06/02 23:27:59 millert Exp $ */
3 /* $NetBSD: vm_43.c,v 1.1 1996/02/05 01:58:29 christos Exp $ */
4
5 /*
6 * Copyright (c) 1988 University of Utah.
7 * Copyright (c) 1991, 1993
8 * The Regents of the University of California. All rights reserved.
9 *
10 * This code is derived from software contributed to Berkeley by
11 * the Systems Programming Group of the University of Utah Computer
12 * Science Department.
13 *
14 * Redistribution and use in source and binary forms, with or without
15 * modification, are permitted provided that the following conditions
16 * are met:
17 * 1. Redistributions of source code must retain the above copyright
18 * notice, this list of conditions and the following disclaimer.
19 * 2. Redistributions in binary form must reproduce the above copyright
20 * notice, this list of conditions and the following disclaimer in the
21 * documentation and/or other materials provided with the distribution.
22 * 3. Neither the name of the University nor the names of its contributors
23 * may be used to endorse or promote products derived from this software
24 * without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * SUCH DAMAGE.
37 *
38 * from: Utah $Hdr: vm_mmap.c 1.6 91/10/21$
39 *
40 * @(#)vm_mmap.c 8.5 (Berkeley) 5/19/94
41 */
42
43 /*
44 * Mapped file (mmap) interface to VM
45 */
46
47 #include <sys/param.h>
48 #include <sys/systm.h>
49 #include <sys/filedesc.h>
50 #include <sys/resourcevar.h>
51 #include <sys/proc.h>
52 #include <sys/vnode.h>
53 #include <sys/file.h>
54 #include <sys/mman.h>
55 #include <sys/conf.h>
56
57 #include <sys/mount.h>
58 #include <sys/syscallargs.h>
59
60 #include <miscfs/specfs/specdev.h>
61
62 #include <uvm/uvm_extern.h>
63
64 #if defined(COMPAT_OPENBSD)
65
66 /* ARGSUSED */
67 int
compat_43_sys_getpagesize(p,v,retval)68 compat_43_sys_getpagesize(p, v, retval)
69 struct proc *p;
70 void *v;
71 register_t *retval;
72 {
73
74 *retval = PAGE_SIZE;
75 return (0);
76 }
77
78 int
compat_43_sys_mmap(p,v,retval)79 compat_43_sys_mmap(p, v, retval)
80 struct proc *p;
81 void *v;
82 register_t *retval;
83 {
84 register struct compat_43_sys_mmap_args /* {
85 syscallarg(caddr_t) addr;
86 syscallarg(size_t) len;
87 syscallarg(int) prot;
88 syscallarg(int) flags;
89 syscallarg(int) fd;
90 syscallarg(long) pos;
91 } */ *uap = v;
92 struct sys_mmap_args /* {
93 syscallarg(caddr_t) addr;
94 syscallarg(size_t) len;
95 syscallarg(int) prot;
96 syscallarg(int) flags;
97 syscallarg(int) fd;
98 syscallarg(long) pad;
99 syscallarg(off_t) pos;
100 } */ nargs;
101 static const char cvtbsdprot[8] = {
102 0,
103 PROT_EXEC,
104 PROT_WRITE,
105 PROT_EXEC|PROT_WRITE,
106 PROT_READ,
107 PROT_EXEC|PROT_READ,
108 PROT_WRITE|PROT_READ,
109 PROT_EXEC|PROT_WRITE|PROT_READ,
110 };
111 #define OMAP_ANON 0x0002
112 #define OMAP_COPY 0x0020
113 #define OMAP_SHARED 0x0010
114 #define OMAP_FIXED 0x0100
115 #define OMAP_INHERIT 0x0800
116
117 SCARG(&nargs, addr) = SCARG(uap, addr);
118 SCARG(&nargs, len) = SCARG(uap, len);
119 SCARG(&nargs, prot) = cvtbsdprot[SCARG(uap, prot)&0x7];
120 SCARG(&nargs, flags) = 0;
121 if (SCARG(uap, flags) & OMAP_ANON)
122 SCARG(&nargs, flags) |= MAP_ANON;
123 if (SCARG(uap, flags) & OMAP_COPY)
124 SCARG(&nargs, flags) |= MAP_PRIVATE;
125 if (SCARG(uap, flags) & OMAP_SHARED)
126 SCARG(&nargs, flags) |= MAP_SHARED;
127 else
128 SCARG(&nargs, flags) |= MAP_PRIVATE;
129 if (SCARG(uap, flags) & OMAP_FIXED)
130 SCARG(&nargs, flags) |= MAP_FIXED;
131 if (SCARG(uap, flags) & OMAP_INHERIT)
132 SCARG(&nargs, flags) |= MAP_INHERIT;
133 SCARG(&nargs, fd) = SCARG(uap, fd);
134 SCARG(&nargs, pos) = SCARG(uap, pos);
135 return (sys_mmap(p, &nargs, retval));
136 }
137 #endif
138