mirror of
https://git.hardenedbsd.org/hardenedbsd/HardenedBSD.git
synced 2024-12-29 15:10:57 +01:00
ffeec4aefe
only function remaining in this file is vm_allocate_with_pager(), and this will be going RSN. The file will be removed when this happens.
131 lines
4.5 KiB
C
131 lines
4.5 KiB
C
/*
|
|
* 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 Mach Operating System project at Carnegie-Mellon University.
|
|
*
|
|
* 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: @(#)vm_user.c 8.2 (Berkeley) 1/12/94
|
|
*
|
|
*
|
|
* Copyright (c) 1987, 1990 Carnegie-Mellon University.
|
|
* All rights reserved.
|
|
*
|
|
* Authors: Avadis Tevanian, Jr., Michael Wayne Young
|
|
*
|
|
* Permission to use, copy, modify and distribute this software and
|
|
* its documentation is hereby granted, provided that both the copyright
|
|
* notice and this permission notice appear in all copies of the
|
|
* software, derivative works or modified versions, and any portions
|
|
* thereof, and that both notices appear in supporting documentation.
|
|
*
|
|
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
|
|
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
|
|
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
|
|
*
|
|
* Carnegie Mellon requests users of this software to return to
|
|
*
|
|
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
|
|
* School of Computer Science
|
|
* Carnegie Mellon University
|
|
* Pittsburgh PA 15213-3890
|
|
*
|
|
* any improvements or extensions that they make and grant Carnegie the
|
|
* rights to redistribute these changes.
|
|
*
|
|
* $Id: vm_user.c,v 1.8 1995/02/20 18:08:18 davidg Exp $
|
|
*/
|
|
|
|
/*
|
|
* User-exported virtual memory functions.
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/proc.h>
|
|
|
|
#include <vm/vm.h>
|
|
|
|
simple_lock_data_t vm_alloc_lock; /* XXX */
|
|
|
|
/*
|
|
* Similar to vm_allocate but assigns an explicit pager.
|
|
*/
|
|
int
|
|
vm_allocate_with_pager(map, addr, size, anywhere, pager, poffset, internal)
|
|
register vm_map_t map;
|
|
register vm_offset_t *addr;
|
|
register vm_size_t size;
|
|
boolean_t anywhere;
|
|
vm_pager_t pager;
|
|
vm_offset_t poffset;
|
|
boolean_t internal;
|
|
{
|
|
register vm_object_t object;
|
|
register int result;
|
|
|
|
if (map == NULL)
|
|
return (KERN_INVALID_ARGUMENT);
|
|
|
|
*addr = trunc_page(*addr);
|
|
size = round_page(size);
|
|
|
|
/*
|
|
* Lookup the pager/paging-space in the object cache. If it's not
|
|
* there, then create a new object and cache it.
|
|
*/
|
|
object = vm_object_lookup(pager);
|
|
if (object == NULL) {
|
|
object = vm_object_allocate(size);
|
|
/*
|
|
* From Mike Hibler: "unnamed anonymous objects should never
|
|
* be on the hash list ... For now you can just change
|
|
* vm_allocate_with_pager to not do vm_object_enter if this is
|
|
* an internal object ..."
|
|
*/
|
|
if (!internal)
|
|
vm_object_enter(object, pager);
|
|
}
|
|
if (internal)
|
|
object->flags |= OBJ_INTERNAL;
|
|
else {
|
|
object->flags &= ~OBJ_INTERNAL;
|
|
cnt.v_nzfod -= atop(size);
|
|
}
|
|
|
|
result = vm_map_find(map, object, poffset, addr, size, anywhere);
|
|
if (result != KERN_SUCCESS)
|
|
vm_object_deallocate(object);
|
|
else if (pager != NULL)
|
|
vm_object_setpager(object, pager, (vm_offset_t) 0, TRUE);
|
|
return (result);
|
|
}
|