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/* $OpenBSD: vm_43.c,v 1.5 2003/06/02 23:27:59 millert Exp $ */
/* $NetBSD: vm_43.c,v 1.1 1996/02/05 01:58:29 christos Exp $ */
/*
* Copyright (c) 1988 University of Utah.
* Copyright (c) 1991, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* the Systems Programming Group of the University of Utah Computer
* Science Department.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* from: Utah $Hdr: vm_mmap.c 1.6 91/10/21$
*
* @(#)vm_mmap.c 8.5 (Berkeley) 5/19/94
*/
/*
* Mapped file (mmap) interface to VM
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/filedesc.h>
#include <sys/resourcevar.h>
#include <sys/proc.h>
#include <sys/vnode.h>
#include <sys/file.h>
#include <sys/mman.h>
#include <sys/conf.h>
#include <sys/mount.h>
#include <sys/syscallargs.h>
#include <miscfs/specfs/specdev.h>
#include <uvm/uvm_extern.h>
/* ARGSUSED */
int
compat_43_sys_getpagesize(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
*retval = PAGE_SIZE;
return (0);
}
int
compat_43_sys_mmap(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
register struct compat_43_sys_mmap_args /* {
syscallarg(caddr_t) addr;
syscallarg(size_t) len;
syscallarg(int) prot;
syscallarg(int) flags;
syscallarg(int) fd;
syscallarg(long) pos;
} */ *uap = v;
struct sys_mmap_args /* {
syscallarg(caddr_t) addr;
syscallarg(size_t) len;
syscallarg(int) prot;
syscallarg(int) flags;
syscallarg(int) fd;
syscallarg(long) pad;
syscallarg(off_t) pos;
} */ nargs;
static const char cvtbsdprot[8] = {
0,
PROT_EXEC,
PROT_WRITE,
PROT_EXEC|PROT_WRITE,
PROT_READ,
PROT_EXEC|PROT_READ,
PROT_WRITE|PROT_READ,
PROT_EXEC|PROT_WRITE|PROT_READ,
};
#define OMAP_ANON 0x0002
#define OMAP_COPY 0x0020
#define OMAP_SHARED 0x0010
#define OMAP_FIXED 0x0100
#define OMAP_INHERIT 0x0800
SCARG(&nargs, addr) = SCARG(uap, addr);
SCARG(&nargs, len) = SCARG(uap, len);
SCARG(&nargs, prot) = cvtbsdprot[SCARG(uap, prot)&0x7];
SCARG(&nargs, flags) = 0;
if (SCARG(uap, flags) & OMAP_ANON)
SCARG(&nargs, flags) |= MAP_ANON;
if (SCARG(uap, flags) & OMAP_COPY)
SCARG(&nargs, flags) |= MAP_PRIVATE;
if (SCARG(uap, flags) & OMAP_SHARED)
SCARG(&nargs, flags) |= MAP_SHARED;
else
SCARG(&nargs, flags) |= MAP_PRIVATE;
if (SCARG(uap, flags) & OMAP_FIXED)
SCARG(&nargs, flags) |= MAP_FIXED;
if (SCARG(uap, flags) & OMAP_INHERIT)
SCARG(&nargs, flags) |= MAP_INHERIT;
SCARG(&nargs, fd) = SCARG(uap, fd);
SCARG(&nargs, pos) = SCARG(uap, pos);
return (sys_mmap(p, &nargs, retval));
}
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