AMD64 - Refactor uio_resid and size_t assumptions.
[dragonfly.git] / sys / emulation / 43bsd / 43bsd_vm.c
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1/*
2 * 43BSD_VM.C - 4.3BSD compatibility virtual memory syscalls
3 *
4 * Copyright (c) 1988 University of Utah.
5 * Copyright (c) 1991, 1993
6 * The Regents of the University of California. All rights reserved.
7 *
8 * This code is derived from software contributed to Berkeley by
9 * the Systems Programming Group of the University of Utah Computer
10 * Science Department.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 * 3. All advertising materials mentioning features or use of this software
21 * must display the following acknowledgement:
22 * This product includes software developed by the University of
23 * California, Berkeley and its contributors.
24 * 4. Neither the name of the University nor the names of its contributors
25 * may be used to endorse or promote products derived from this software
26 * without specific prior written permission.
27 *
28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38 * SUCH DAMAGE.
39 *
0daa37a5 40 * $DragonFly: src/sys/emulation/43bsd/43bsd_vm.c,v 1.4 2006/09/17 21:07:25 dillon Exp $
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41 * from: DragonFly vm/vm_unix.c,v 1.3
42 * from: DragonFly vm/vm_mmap.c,v 1.15
43 */
44
45#include "opt_compat.h"
46
47#include <sys/param.h>
48#include <sys/sysproto.h>
49#include <sys/kern_syscall.h>
50#include <sys/mman.h>
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51#include <sys/proc.h>
52#include <sys/thread2.h>
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53
54int
753fd850 55sys_ovadvise(struct ovadvise_args *uap)
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56{
57 return (EINVAL);
58}
59
60int
753fd850 61sys_ogetpagesize(struct getpagesize_args *uap)
a0ff68c9 62{
e54488bb 63 uap->sysmsg_iresult = PAGE_SIZE;
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64 return (0);
65}
66
67int
753fd850 68sys_ommap(struct ommap_args *uap)
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69{
70 static const char cvtbsdprot[8] = {
71 0,
72 PROT_EXEC,
73 PROT_WRITE,
74 PROT_EXEC | PROT_WRITE,
75 PROT_READ,
76 PROT_EXEC | PROT_READ,
77 PROT_WRITE | PROT_READ,
78 PROT_EXEC | PROT_WRITE | PROT_READ,
79 };
80 int error, flags, prot;
81
82#define OMAP_ANON 0x0002
83#define OMAP_COPY 0x0020
84#define OMAP_SHARED 0x0010
85#define OMAP_FIXED 0x0100
86#define OMAP_INHERIT 0x0800
87
88 prot = cvtbsdprot[uap->prot & 0x7];
89 flags = 0;
90 if (uap->flags & OMAP_ANON)
91 flags |= MAP_ANON;
92 if (uap->flags & OMAP_COPY)
93 flags |= MAP_COPY;
94 if (uap->flags & OMAP_SHARED)
95 flags |= MAP_SHARED;
96 else
97 flags |= MAP_PRIVATE;
98 if (uap->flags & OMAP_FIXED)
99 flags |= MAP_FIXED;
100 if (uap->flags & OMAP_INHERIT)
101 flags |= MAP_INHERIT;
102
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103 error = kern_mmap(curproc->p_vmspace, uap->addr, uap->len,
104 prot, flags, uap->fd, uap->pos,
105 &uap->sysmsg_resultp);
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106
107 return (error);
108}