168 lines
5.9 KiB
C
168 lines
5.9 KiB
C
/* $NetBSD: vm_43.c,v 1.15 2007/03/04 06:01:13 christos Exp $ */
|
|
|
|
/*
|
|
* 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
|
|
*/
|
|
|
|
/*
|
|
* Copyright (c) 1988 University of Utah.
|
|
*
|
|
* 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. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. 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/cdefs.h>
|
|
__KERNEL_RCSID(0, "$NetBSD: vm_43.c,v 1.15 2007/03/04 06:01:13 christos Exp $");
|
|
|
|
#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/mount.h>
|
|
#include <sys/syscallargs.h>
|
|
|
|
#include <miscfs/specfs/specdev.h>
|
|
|
|
/* ARGSUSED */
|
|
int
|
|
compat_43_sys_getpagesize(struct lwp *l, void *v,
|
|
register_t *retval)
|
|
{
|
|
|
|
*retval = PAGE_SIZE;
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
compat_43_sys_mmap(struct lwp *l, void *v, register_t *retval)
|
|
{
|
|
struct compat_43_sys_mmap_args /* {
|
|
syscallarg(void *) addr;
|
|
syscallarg(size_t) len;
|
|
syscallarg(int) prot;
|
|
syscallarg(int) flags;
|
|
syscallarg(int) fd;
|
|
syscallarg(long) pos;
|
|
} */ *uap = v;
|
|
struct sys_mmap_args /* {
|
|
syscallarg(void *) 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);
|
|
/* Note: index using prot is sign-safe due to mask */
|
|
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_COPY;
|
|
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(l, &nargs, retval));
|
|
}
|