xnu-6153.121.1.tar.gz

[apple/xnu.git] / osfmk / vm / vm_user.c

diff --git a/osfmk/vm/vm_user.c b/osfmk/vm/vm_user.c
index e100b9c7e0c1355c71dd38a9a134e64ee8119a7a..027d0c99265c9e96584fcea33415a0f70c2537a0 100644 (file)
--- a/osfmk/vm/vm_user.c
+++ b/osfmk/vm/vm_user.c
@@ -1,49 +1,55 @@
 /*
 /*

- * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2007 Apple Inc. All rights reserved.

  *
  *

- * @APPLE_LICENSE_HEADER_START@
- * 
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License").  You may not use this file except in compliance with the
- * License.  Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
- * 
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
+ *
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
+ *
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER

  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
- * License for the specific language governing rights and limitations
- * under the License.
- * 
- * @APPLE_LICENSE_HEADER_END@
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@

  */
 /*
  * @OSF_COPYRIGHT@
  */
  */
 /*
  * @OSF_COPYRIGHT@
  */

-/* 
+/*

  * Mach Operating System
  * Copyright (c) 1991,1990,1989,1988 Carnegie Mellon University
  * All Rights Reserved.
  * Mach Operating System
  * Copyright (c) 1991,1990,1989,1988 Carnegie Mellon University
  * All Rights Reserved.

- * 
+ *

  * 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.
  * 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 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
  * 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
  *  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 Mellon
  * the rights to redistribute these changes.
  */
  * any improvements or extensions that they make and grant Carnegie Mellon
  * the rights to redistribute these changes.
  */


@@ -52,29 +58,52 @@
 /*
  *     File:   vm/vm_user.c
  *     Author: Avadis Tevanian, Jr., Michael Wayne Young
 /*
  *     File:   vm/vm_user.c
  *     Author: Avadis Tevanian, Jr., Michael Wayne Young

- * 
+ *

  *     User-exported virtual memory functions.
  */
 
  *     User-exported virtual memory functions.
  */
 

+/*
+ * There are three implementations of the "XXX_allocate" functionality in
+ * the kernel: mach_vm_allocate (for any task on the platform), vm_allocate
+ * (for a task with the same address space size, especially the current task),
+ * and vm32_vm_allocate (for the specific case of a 32-bit task). vm_allocate
+ * in the kernel should only be used on the kernel_task. vm32_vm_allocate only
+ * makes sense on platforms where a user task can either be 32 or 64, or the kernel
+ * task can be 32 or 64. mach_vm_allocate makes sense everywhere, and is preferred
+ * for new code.
+ *
+ * The entrypoints into the kernel are more complex. All platforms support a
+ * mach_vm_allocate-style API (subsystem 4800) which operates with the largest
+ * size types for the platform. On platforms that only support U32/K32,
+ * subsystem 4800 is all you need. On platforms that support both U32 and U64,
+ * subsystem 3800 is used disambiguate the size of parameters, and they will
+ * always be 32-bit and call into the vm32_vm_allocate APIs. On non-U32/K32 platforms,
+ * the MIG glue should never call into vm_allocate directly, because the calling
+ * task and kernel_task are unlikely to use the same size parameters
+ *
+ * New VM call implementations should be added here and to mach_vm.defs
+ * (subsystem 4800), and use mach_vm_* "wide" types.
+ */
+

 #include <debug.h>
 
 #include <vm_cpm.h>
 #include <mach/boolean.h>
 #include <mach/kern_return.h>
 #include <debug.h>
 
 #include <vm_cpm.h>
 #include <mach/boolean.h>
 #include <mach/kern_return.h>

-#include <mach/mach_types.h>   /* to get vm_address_t */
+#include <mach/mach_types.h>    /* to get vm_address_t */

 #include <mach/memory_object.h>
 #include <mach/memory_object.h>

-#include <mach/std_types.h>    /* to get pointer_t */
+#include <mach/std_types.h>     /* to get pointer_t */

 #include <mach/upl.h>
 #include <mach/vm_attributes.h>
 #include <mach/vm_param.h>
 #include <mach/vm_statistics.h>
 #include <mach/mach_syscalls.h>
 #include <mach/upl.h>
 #include <mach/vm_attributes.h>
 #include <mach/vm_param.h>
 #include <mach/vm_statistics.h>
 #include <mach/mach_syscalls.h>

+#include <mach/sdt.h>

 
 #include <mach/host_priv_server.h>
 #include <mach/mach_vm_server.h>
 
 #include <mach/host_priv_server.h>
 #include <mach/mach_vm_server.h>

-#include <mach/shared_memory_server.h>
+#include <mach/memory_entry_server.h>

 #include <mach/vm_map_server.h>
 #include <mach/vm_map_server.h>

-#include <vm/vm_shared_memory_server.h>

 
 #include <kern/host.h>
 #include <kern/kalloc.h>
 
 #include <kern/host.h>
 #include <kern/kalloc.h>


@@ -87,38 +116,64 @@
 #include <vm/memory_object.h>
 #include <vm/vm_pageout.h>
 #include <vm/vm_protos.h>
 #include <vm/memory_object.h>
 #include <vm/vm_pageout.h>
 #include <vm/vm_protos.h>

+#include <vm/vm_purgeable_internal.h>
+#include <vm/vm_init.h>
+
+#include <san/kasan.h>
+
+#include <libkern/OSDebug.h>
+#include <IOKit/IOBSD.h>

 
 vm_size_t        upl_offset_to_pagelist = 0;
 
 
 vm_size_t        upl_offset_to_pagelist = 0;
 

-#if    VM_CPM
+#if     VM_CPM

 #include <vm/cpm.h>
 #include <vm/cpm.h>

-#endif /* VM_CPM */
-
-ipc_port_t     dynamic_pager_control_port=NULL;
+#endif  /* VM_CPM */

 
 /*
  *     mach_vm_allocate allocates "zero fill" memory in the specfied
  *     map.
  */
 kern_return_t
 
 /*
  *     mach_vm_allocate allocates "zero fill" memory in the specfied
  *     map.
  */
 kern_return_t

-mach_vm_allocate(
-       vm_map_t                map,
-       mach_vm_offset_t        *addr,
-       mach_vm_size_t  size,
-       int                     flags)
+mach_vm_allocate_external(
+       vm_map_t                map,
+       mach_vm_offset_t        *addr,
+       mach_vm_size_t  size,
+       int                     flags)
+{
+       vm_tag_t tag;
+
+       VM_GET_FLAGS_ALIAS(flags, tag);
+       return mach_vm_allocate_kernel(map, addr, size, flags, tag);
+}
+
+kern_return_t
+mach_vm_allocate_kernel(
+       vm_map_t                map,
+       mach_vm_offset_t        *addr,
+       mach_vm_size_t  size,
+       int                     flags,
+       vm_tag_t    tag)

 {
        vm_map_offset_t map_addr;
 {
        vm_map_offset_t map_addr;

-       vm_map_size_t   map_size;
-       kern_return_t   result;
-       boolean_t       anywhere = ((VM_FLAGS_ANYWHERE & flags) != 0);
+       vm_map_size_t   map_size;
+       kern_return_t   result;
+       boolean_t       anywhere;

 
 

-       if (map == VM_MAP_NULL)
-               return(KERN_INVALID_ARGUMENT);
+       /* filter out any kernel-only flags */
+       if (flags & ~VM_FLAGS_USER_ALLOCATE) {
+               return KERN_INVALID_ARGUMENT;
+       }
+
+       if (map == VM_MAP_NULL) {
+               return KERN_INVALID_ARGUMENT;
+       }

        if (size == 0) {
                *addr = 0;
        if (size == 0) {
                *addr = 0;

-               return(KERN_SUCCESS);
+               return KERN_SUCCESS;

        }
 
        }
 

+       anywhere = ((VM_FLAGS_ANYWHERE & flags) != 0);

        if (anywhere) {
                /*
                 * No specific address requested, so start candidate address
        if (anywhere) {
                /*
                 * No specific address requested, so start candidate address


@@ -131,56 +186,83 @@ mach_vm_allocate(
                 * memory would tend to confuse those applications.
                 */
                map_addr = vm_map_min(map);
                 * memory would tend to confuse those applications.
                 */
                map_addr = vm_map_min(map);

-               if (map_addr == 0)
-                       map_addr += PAGE_SIZE;
-       } else
-               map_addr = vm_map_trunc_page(*addr);
-       map_size = vm_map_round_page(size);
+               if (map_addr == 0) {
+                       map_addr += VM_MAP_PAGE_SIZE(map);
+               }
+       } else {
+               map_addr = vm_map_trunc_page(*addr,
+                   VM_MAP_PAGE_MASK(map));
+       }
+       map_size = vm_map_round_page(size,
+           VM_MAP_PAGE_MASK(map));

        if (map_size == 0) {
        if (map_size == 0) {

-         return(KERN_INVALID_ARGUMENT);
+               return KERN_INVALID_ARGUMENT;

        }
 
        result = vm_map_enter(
        }
 
        result = vm_map_enter(

-                       map,
-                       &map_addr,
-                       map_size,
-                       (vm_map_offset_t)0,
-                       flags,
-                       VM_OBJECT_NULL,
-                       (vm_object_offset_t)0,
-                       FALSE,
-                       VM_PROT_DEFAULT,
-                       VM_PROT_ALL,
-                       VM_INHERIT_DEFAULT);
+               map,
+               &map_addr,
+               map_size,
+               (vm_map_offset_t)0,
+               flags,
+               VM_MAP_KERNEL_FLAGS_NONE,
+               tag,
+               VM_OBJECT_NULL,
+               (vm_object_offset_t)0,
+               FALSE,
+               VM_PROT_DEFAULT,
+               VM_PROT_ALL,
+               VM_INHERIT_DEFAULT);

 
        *addr = map_addr;
 
        *addr = map_addr;

-       return(result);
+       return result;

 }
 
 /*
 }
 
 /*

- *     vm_allocate 
+ *     vm_allocate

  *     Legacy routine that allocates "zero fill" memory in the specfied
  *     map (which is limited to the same size as the kernel).
  */
 kern_return_t
  *     Legacy routine that allocates "zero fill" memory in the specfied
  *     map (which is limited to the same size as the kernel).
  */
 kern_return_t

-vm_allocate(
-       vm_map_t        map,
-       vm_offset_t     *addr,
-       vm_size_t       size,
-       int             flags)
+vm_allocate_external(
+       vm_map_t        map,
+       vm_offset_t     *addr,
+       vm_size_t       size,
+       int             flags)
+{
+       vm_tag_t tag;
+
+       VM_GET_FLAGS_ALIAS(flags, tag);
+       return vm_allocate_kernel(map, addr, size, flags, tag);
+}
+
+kern_return_t
+vm_allocate_kernel(
+       vm_map_t        map,
+       vm_offset_t     *addr,
+       vm_size_t       size,
+       int         flags,
+       vm_tag_t    tag)

 {
        vm_map_offset_t map_addr;
 {
        vm_map_offset_t map_addr;

-       vm_map_size_t   map_size;
-       kern_return_t   result;
-       boolean_t       anywhere = ((VM_FLAGS_ANYWHERE & flags) != 0);
+       vm_map_size_t   map_size;
+       kern_return_t   result;
+       boolean_t       anywhere;
+
+       /* filter out any kernel-only flags */
+       if (flags & ~VM_FLAGS_USER_ALLOCATE) {
+               return KERN_INVALID_ARGUMENT;
+       }

 
 

-       if (map == VM_MAP_NULL)
-               return(KERN_INVALID_ARGUMENT);
+       if (map == VM_MAP_NULL) {
+               return KERN_INVALID_ARGUMENT;
+       }

        if (size == 0) {
                *addr = 0;
        if (size == 0) {
                *addr = 0;

-               return(KERN_SUCCESS);
+               return KERN_SUCCESS;

        }
 
        }
 

+       anywhere = ((VM_FLAGS_ANYWHERE & flags) != 0);

        if (anywhere) {
                /*
                 * No specific address requested, so start candidate address
        if (anywhere) {
                /*
                 * No specific address requested, so start candidate address


@@ -193,30 +275,42 @@ vm_allocate(
                 * memory would tend to confuse those applications.
                 */
                map_addr = vm_map_min(map);
                 * memory would tend to confuse those applications.
                 */
                map_addr = vm_map_min(map);

-               if (map_addr == 0)
-                       map_addr += PAGE_SIZE;
-       } else
-               map_addr = vm_map_trunc_page(*addr);
-       map_size = vm_map_round_page(size);
+               if (map_addr == 0) {
+                       map_addr += VM_MAP_PAGE_SIZE(map);
+               }
+       } else {
+               map_addr = vm_map_trunc_page(*addr,
+                   VM_MAP_PAGE_MASK(map));
+       }
+       map_size = vm_map_round_page(size,
+           VM_MAP_PAGE_MASK(map));

        if (map_size == 0) {
        if (map_size == 0) {

-         return(KERN_INVALID_ARGUMENT);
+               return KERN_INVALID_ARGUMENT;

        }
 
        result = vm_map_enter(
        }
 
        result = vm_map_enter(

-                       map,
-                       &map_addr,
-                       map_size,
-                       (vm_map_offset_t)0,
-                       flags,
-                       VM_OBJECT_NULL,
-                       (vm_object_offset_t)0,
-                       FALSE,
-                       VM_PROT_DEFAULT,
-                       VM_PROT_ALL,
-                       VM_INHERIT_DEFAULT);
+               map,
+               &map_addr,
+               map_size,
+               (vm_map_offset_t)0,
+               flags,
+               VM_MAP_KERNEL_FLAGS_NONE,
+               tag,
+               VM_OBJECT_NULL,
+               (vm_object_offset_t)0,
+               FALSE,
+               VM_PROT_DEFAULT,
+               VM_PROT_ALL,
+               VM_INHERIT_DEFAULT);
+
+#if KASAN
+       if (result == KERN_SUCCESS && map->pmap == kernel_pmap) {
+               kasan_notify_address(map_addr, map_size);
+       }
+#endif

 
        *addr = CAST_DOWN(vm_offset_t, map_addr);
 
        *addr = CAST_DOWN(vm_offset_t, map_addr);

-       return(result);
+       return result;

 }
 
 /*
 }
 
 /*


@@ -226,18 +320,24 @@ vm_allocate(
  */
 kern_return_t
 mach_vm_deallocate(
  */
 kern_return_t
 mach_vm_deallocate(

-       vm_map_t                map,
-       mach_vm_offset_t        start,
-       mach_vm_size_t  size)
+       vm_map_t                map,
+       mach_vm_offset_t        start,
+       mach_vm_size_t  size)

 {
 {

-       if ((map == VM_MAP_NULL) || (start + size < start))
-               return(KERN_INVALID_ARGUMENT);
+       if ((map == VM_MAP_NULL) || (start + size < start)) {
+               return KERN_INVALID_ARGUMENT;
+       }

 
 

-       if (size == (mach_vm_offset_t) 0)
-               return(KERN_SUCCESS);
+       if (size == (mach_vm_offset_t) 0) {
+               return KERN_SUCCESS;
+       }

 
 

-       return(vm_map_remove(map, vm_map_trunc_page(start),
-                            vm_map_round_page(start+size), VM_MAP_NO_FLAGS));
+       return vm_map_remove(map,
+                  vm_map_trunc_page(start,
+                  VM_MAP_PAGE_MASK(map)),
+                  vm_map_round_page(start + size,
+                  VM_MAP_PAGE_MASK(map)),
+                  VM_MAP_REMOVE_NO_FLAGS);

 }
 
 /*
 }
 
 /*


@@ -248,18 +348,24 @@ mach_vm_deallocate(
  */
 kern_return_t
 vm_deallocate(
  */
 kern_return_t
 vm_deallocate(

-       register vm_map_t       map,
-       vm_offset_t             start,
-       vm_size_t               size)
+       vm_map_t                map,
+       vm_offset_t             start,
+       vm_size_t               size)

 {
 {

-       if ((map == VM_MAP_NULL) || (start + size < start))
-               return(KERN_INVALID_ARGUMENT);
+       if ((map == VM_MAP_NULL) || (start + size < start)) {
+               return KERN_INVALID_ARGUMENT;
+       }

 
 

-       if (size == (vm_offset_t) 0)
-               return(KERN_SUCCESS);
+       if (size == (vm_offset_t) 0) {
+               return KERN_SUCCESS;
+       }

 
 

-       return(vm_map_remove(map, vm_map_trunc_page(start),
-                            vm_map_round_page(start+size), VM_MAP_NO_FLAGS));
+       return vm_map_remove(map,
+                  vm_map_trunc_page(start,
+                  VM_MAP_PAGE_MASK(map)),
+                  vm_map_round_page(start + size,
+                  VM_MAP_PAGE_MASK(map)),
+                  VM_MAP_REMOVE_NO_FLAGS);

 }
 
 /*
 }
 
 /*


@@ -269,22 +375,26 @@ vm_deallocate(
  */
 kern_return_t
 mach_vm_inherit(
  */
 kern_return_t
 mach_vm_inherit(

-       vm_map_t                map,
-       mach_vm_offset_t        start,
-       mach_vm_size_t  size,
-       vm_inherit_t            new_inheritance)
+       vm_map_t                map,
+       mach_vm_offset_t        start,
+       mach_vm_size_t  size,
+       vm_inherit_t            new_inheritance)

 {
        if ((map == VM_MAP_NULL) || (start + size < start) ||
 {
        if ((map == VM_MAP_NULL) || (start + size < start) ||

-           (new_inheritance > VM_INHERIT_LAST_VALID))
-                return(KERN_INVALID_ARGUMENT);
+           (new_inheritance > VM_INHERIT_LAST_VALID)) {
+               return KERN_INVALID_ARGUMENT;
+       }

 
 

-       if (size == 0)
+       if (size == 0) {

                return KERN_SUCCESS;
                return KERN_SUCCESS;

+       }

 
 

-       return(vm_map_inherit(map,
-                             vm_map_trunc_page(start),
-                             vm_map_round_page(start+size),
-                             new_inheritance));
+       return vm_map_inherit(map,
+                  vm_map_trunc_page(start,
+                  VM_MAP_PAGE_MASK(map)),
+                  vm_map_round_page(start + size,
+                  VM_MAP_PAGE_MASK(map)),
+                  new_inheritance);

 }
 
 /*
 }
 
 /*


@@ -294,22 +404,26 @@ mach_vm_inherit(
  */
 kern_return_t
 vm_inherit(
  */
 kern_return_t
 vm_inherit(

-       register vm_map_t       map,
-       vm_offset_t             start,
-       vm_size_t               size,
-       vm_inherit_t            new_inheritance)
+       vm_map_t                map,
+       vm_offset_t             start,
+       vm_size_t               size,
+       vm_inherit_t            new_inheritance)

 {
        if ((map == VM_MAP_NULL) || (start + size < start) ||
 {
        if ((map == VM_MAP_NULL) || (start + size < start) ||

-           (new_inheritance > VM_INHERIT_LAST_VALID))
-                return(KERN_INVALID_ARGUMENT);
+           (new_inheritance > VM_INHERIT_LAST_VALID)) {
+               return KERN_INVALID_ARGUMENT;
+       }

 
 

-       if (size == 0)
+       if (size == 0) {

                return KERN_SUCCESS;
                return KERN_SUCCESS;

+       }

 
 

-       return(vm_map_inherit(map,
-                             vm_map_trunc_page(start),
-                             vm_map_round_page(start+size),
-                             new_inheritance));
+       return vm_map_inherit(map,
+                  vm_map_trunc_page(start,
+                  VM_MAP_PAGE_MASK(map)),
+                  vm_map_round_page(start + size,
+                  VM_MAP_PAGE_MASK(map)),
+                  new_inheritance);

 }
 
 /*
 }
 
 /*


@@ -320,24 +434,28 @@ vm_inherit(
 
 kern_return_t
 mach_vm_protect(
 
 kern_return_t
 mach_vm_protect(

-       vm_map_t                map,
-       mach_vm_offset_t        start,
-       mach_vm_size_t  size,
-       boolean_t               set_maximum,
-       vm_prot_t               new_protection)
+       vm_map_t                map,
+       mach_vm_offset_t        start,
+       mach_vm_size_t  size,
+       boolean_t               set_maximum,
+       vm_prot_t               new_protection)

 {
        if ((map == VM_MAP_NULL) || (start + size < start) ||
 {
        if ((map == VM_MAP_NULL) || (start + size < start) ||

-           (new_protection & ~(VM_PROT_ALL | VM_PROT_COPY)))
-               return(KERN_INVALID_ARGUMENT);
+           (new_protection & ~(VM_PROT_ALL | VM_PROT_COPY))) {
+               return KERN_INVALID_ARGUMENT;
+       }

 
 

-       if (size == 0)
+       if (size == 0) {

                return KERN_SUCCESS;
                return KERN_SUCCESS;

+       }

 
 

-       return(vm_map_protect(map,
-                             vm_map_trunc_page(start),
-                             vm_map_round_page(start+size),
-                             new_protection,
-                             set_maximum));
+       return vm_map_protect(map,
+                  vm_map_trunc_page(start,
+                  VM_MAP_PAGE_MASK(map)),
+                  vm_map_round_page(start + size,
+                  VM_MAP_PAGE_MASK(map)),
+                  new_protection,
+                  set_maximum);

 }
 
 /*
 }
 
 /*


@@ -349,24 +467,28 @@ mach_vm_protect(
 
 kern_return_t
 vm_protect(
 
 kern_return_t
 vm_protect(

-       vm_map_t                map,
-       vm_offset_t             start,
-       vm_size_t               size,
-       boolean_t               set_maximum,
-       vm_prot_t               new_protection)
+       vm_map_t                map,
+       vm_offset_t             start,
+       vm_size_t               size,
+       boolean_t               set_maximum,
+       vm_prot_t               new_protection)

 {
        if ((map == VM_MAP_NULL) || (start + size < start) ||
 {
        if ((map == VM_MAP_NULL) || (start + size < start) ||

-           (new_protection & ~(VM_PROT_ALL | VM_PROT_COPY)))
-               return(KERN_INVALID_ARGUMENT);
+           (new_protection & ~(VM_PROT_ALL | VM_PROT_COPY))) {
+               return KERN_INVALID_ARGUMENT;
+       }

 
 

-       if (size == 0)
+       if (size == 0) {

                return KERN_SUCCESS;
                return KERN_SUCCESS;

+       }

 
 

-       return(vm_map_protect(map,
-                             vm_map_trunc_page(start),
-                             vm_map_round_page(start+size),
-                             new_protection,
-                             set_maximum));
+       return vm_map_protect(map,
+                  vm_map_trunc_page(start,
+                  VM_MAP_PAGE_MASK(map)),
+                  vm_map_round_page(start + size,
+                  VM_MAP_PAGE_MASK(map)),
+                  new_protection,
+                  set_maximum);

 }
 
 /*
 }
 
 /*


@@ -376,23 +498,28 @@ vm_protect(
  */
 kern_return_t
 mach_vm_machine_attribute(
  */
 kern_return_t
 mach_vm_machine_attribute(

-       vm_map_t                        map,
-       mach_vm_address_t               addr,
-       mach_vm_size_t          size,
-       vm_machine_attribute_t  attribute,
-       vm_machine_attribute_val_t* value)              /* IN/OUT */
+       vm_map_t                        map,
+       mach_vm_address_t               addr,
+       mach_vm_size_t          size,
+       vm_machine_attribute_t  attribute,
+       vm_machine_attribute_val_t* value)              /* IN/OUT */

 {
 {

-       if ((map == VM_MAP_NULL) || (addr + size < addr))
-               return(KERN_INVALID_ARGUMENT);
+       if ((map == VM_MAP_NULL) || (addr + size < addr)) {
+               return KERN_INVALID_ARGUMENT;
+       }

 
 

-       if (size == 0)
+       if (size == 0) {

                return KERN_SUCCESS;
                return KERN_SUCCESS;

+       }

 
 

-       return vm_map_machine_attribute(map, 
-                               vm_map_trunc_page(addr),
-                               vm_map_round_page(addr+size),
-                               attribute,
-                               value);
+       return vm_map_machine_attribute(
+               map,
+               vm_map_trunc_page(addr,
+               VM_MAP_PAGE_MASK(map)),
+               vm_map_round_page(addr + size,
+               VM_MAP_PAGE_MASK(map)),
+               attribute,
+               value);

 }
 
 /*
 }
 
 /*


@@ -403,23 +530,28 @@ mach_vm_machine_attribute(
  */
 kern_return_t
 vm_machine_attribute(
  */
 kern_return_t
 vm_machine_attribute(

-       vm_map_t        map,
-       vm_address_t    addr,
-       vm_size_t       size,
-       vm_machine_attribute_t  attribute,
-       vm_machine_attribute_val_t* value)              /* IN/OUT */
+       vm_map_t        map,
+       vm_address_t    addr,
+       vm_size_t       size,
+       vm_machine_attribute_t  attribute,
+       vm_machine_attribute_val_t* value)              /* IN/OUT */

 {
 {

-       if ((map == VM_MAP_NULL) || (addr + size < addr))
-               return(KERN_INVALID_ARGUMENT);
+       if ((map == VM_MAP_NULL) || (addr + size < addr)) {
+               return KERN_INVALID_ARGUMENT;
+       }

 
 

-       if (size == 0)
+       if (size == 0) {

                return KERN_SUCCESS;
                return KERN_SUCCESS;

+       }

 
 

-       return vm_map_machine_attribute(map, 
-                               vm_map_trunc_page(addr),
-                               vm_map_round_page(addr+size),
-                               attribute,
-                               value);
+       return vm_map_machine_attribute(
+               map,
+               vm_map_trunc_page(addr,
+               VM_MAP_PAGE_MASK(map)),
+               vm_map_round_page(addr + size,
+               VM_MAP_PAGE_MASK(map)),
+               attribute,
+               value);

 }
 
 /*
 }
 
 /*


@@ -430,44 +562,49 @@ vm_machine_attribute(
  * the IPC implementation as part of receiving the reply to this call.
  * If IPC isn't used, the caller must deal with the vm_map_copy_t object
  * that gets returned.
  * the IPC implementation as part of receiving the reply to this call.
  * If IPC isn't used, the caller must deal with the vm_map_copy_t object
  * that gets returned.

- * 
+ *

  * JMM - because of mach_msg_type_number_t, this call is limited to a
  * single 4GB region at this time.
  *
  */
 kern_return_t
 mach_vm_read(
  * JMM - because of mach_msg_type_number_t, this call is limited to a
  * single 4GB region at this time.
  *
  */
 kern_return_t
 mach_vm_read(

-       vm_map_t                map,
-       mach_vm_address_t       addr,
-       mach_vm_size_t  size,
-       pointer_t               *data,
-       mach_msg_type_number_t  *data_size)
+       vm_map_t                map,
+       mach_vm_address_t       addr,
+       mach_vm_size_t  size,
+       pointer_t               *data,
+       mach_msg_type_number_t  *data_size)

 {
 {

-       kern_return_t   error;
-       vm_map_copy_t   ipc_address;
+       kern_return_t   error;
+       vm_map_copy_t   ipc_address;
+
+       if (map == VM_MAP_NULL) {
+               return KERN_INVALID_ARGUMENT;
+       }

 
 

-       if (map == VM_MAP_NULL)
-               return(KERN_INVALID_ARGUMENT);
+       if ((mach_msg_type_number_t) size != size) {
+               return KERN_INVALID_ARGUMENT;
+       }

 
 

-       

        error = vm_map_copyin(map,
        error = vm_map_copyin(map,

-                       (vm_map_address_t)addr,
-                       (vm_map_size_t)size,
-                       FALSE,  /* src_destroy */
-                       &ipc_address);
+           (vm_map_address_t)addr,
+           (vm_map_size_t)size,
+           FALSE,              /* src_destroy */
+           &ipc_address);

 
        if (KERN_SUCCESS == error) {
                *data = (pointer_t) ipc_address;
 
        if (KERN_SUCCESS == error) {
                *data = (pointer_t) ipc_address;

-               *data_size = size;
+               *data_size = (mach_msg_type_number_t) size;
+               assert(*data_size == size);

        }
        }

-       return(error);
+       return error;

 }
 
 /*
  * vm_read -
  * Read/copy a range from one address space and return it to the caller.
  * Limited addressability (same range limits as for the native kernel map).
 }
 
 /*
  * vm_read -
  * Read/copy a range from one address space and return it to the caller.
  * Limited addressability (same range limits as for the native kernel map).

- * 
+ *

  * It is assumed that the address for the returned memory is selected by
  * the IPC implementation as part of receiving the reply to this call.
  * If IPC isn't used, the caller must deal with the vm_map_copy_t object
  * It is assumed that the address for the returned memory is selected by
  * the IPC implementation as part of receiving the reply to this call.
  * If IPC isn't used, the caller must deal with the vm_map_copy_t object


@@ -475,32 +612,45 @@ mach_vm_read(
  */
 kern_return_t
 vm_read(
  */
 kern_return_t
 vm_read(

-       vm_map_t                map,
-       vm_address_t            addr,
-       vm_size_t               size,
-       pointer_t               *data,
-       mach_msg_type_number_t  *data_size)
+       vm_map_t                map,
+       vm_address_t            addr,
+       vm_size_t               size,
+       pointer_t               *data,
+       mach_msg_type_number_t  *data_size)

 {
 {

-       kern_return_t   error;
-       vm_map_copy_t   ipc_address;
+       kern_return_t   error;
+       vm_map_copy_t   ipc_address;
+
+       if (map == VM_MAP_NULL) {
+               return KERN_INVALID_ARGUMENT;
+       }

 
 

-       if (map == VM_MAP_NULL)
-               return(KERN_INVALID_ARGUMENT);
+       mach_msg_type_number_t dsize;
+       if (os_convert_overflow(size, &dsize)) {
+               /*
+                * The kernel could handle a 64-bit "size" value, but
+                * it could not return the size of the data in "*data_size"
+                * without overflowing.
+                * Let's reject this "size" as invalid.
+                */
+               return KERN_INVALID_ARGUMENT;
+       }

 
        error = vm_map_copyin(map,
 
        error = vm_map_copyin(map,

-                       (vm_map_address_t)addr,
-                       (vm_map_size_t)size,
-                       FALSE,  /* src_destroy */
-                       &ipc_address);
+           (vm_map_address_t)addr,
+           (vm_map_size_t)size,
+           FALSE,              /* src_destroy */
+           &ipc_address);

 
        if (KERN_SUCCESS == error) {
                *data = (pointer_t) ipc_address;
 
        if (KERN_SUCCESS == error) {
                *data = (pointer_t) ipc_address;

-               *data_size = size;
+               *data_size = dsize;
+               assert(*data_size == size);

        }
        }

-       return(error);
+       return error;

 }
 
 }
 

-/* 
+/*

  * mach_vm_read_list -
  * Read/copy a list of address ranges from specified map.
  *
  * mach_vm_read_list -
  * Read/copy a list of address ranges from specified map.
  *


@@ -510,36 +660,38 @@ vm_read(
  */
 kern_return_t
 mach_vm_read_list(
  */
 kern_return_t
 mach_vm_read_list(

-       vm_map_t                        map,
-       mach_vm_read_entry_t            data_list,
-       natural_t                       count)
+       vm_map_t                        map,
+       mach_vm_read_entry_t            data_list,
+       natural_t                       count)

 {
 {

-       mach_msg_type_number_t  i;
-       kern_return_t   error;
-       vm_map_copy_t   copy;
+       mach_msg_type_number_t  i;
+       kern_return_t   error;
+       vm_map_copy_t   copy;

 
 

-       if (map == VM_MAP_NULL)
-               return(KERN_INVALID_ARGUMENT);
+       if (map == VM_MAP_NULL ||
+           count > VM_MAP_ENTRY_MAX) {
+               return KERN_INVALID_ARGUMENT;
+       }

 
        error = KERN_SUCCESS;
 
        error = KERN_SUCCESS;

-       for(i=0; i<count; i++) {
+       for (i = 0; i < count; i++) {

                vm_map_address_t map_addr;
                vm_map_size_t map_size;
 
                map_addr = (vm_map_address_t)(data_list[i].address);
                map_size = (vm_map_size_t)(data_list[i].size);
 
                vm_map_address_t map_addr;
                vm_map_size_t map_size;
 
                map_addr = (vm_map_address_t)(data_list[i].address);
                map_size = (vm_map_size_t)(data_list[i].size);
 

-               if(map_size != 0) {
+               if (map_size != 0) {

                        error = vm_map_copyin(map,
                        error = vm_map_copyin(map,

-                                       map_addr,
-                                       map_size,
-                                       FALSE,  /* src_destroy */
-                                       &copy);
+                           map_addr,
+                           map_size,
+                           FALSE,              /* src_destroy */
+                           &copy);

                        if (KERN_SUCCESS == error) {
                                error = vm_map_copyout(
                        if (KERN_SUCCESS == error) {
                                error = vm_map_copyout(

-                                               current_task()->map, 
-                                               &map_addr,
-                                               copy);
+                                       current_task()->map,
+                                       &map_addr,
+                                       copy);

                                if (KERN_SUCCESS == error) {
                                        data_list[i].address = map_addr;
                                        continue;
                                if (KERN_SUCCESS == error) {
                                        data_list[i].address = map_addr;
                                        continue;


@@ -550,10 +702,10 @@ mach_vm_read_list(
                data_list[i].address = (mach_vm_address_t)0;
                data_list[i].size = (mach_vm_size_t)0;
        }
                data_list[i].address = (mach_vm_address_t)0;
                data_list[i].size = (mach_vm_size_t)0;
        }

-       return(error);
+       return error;

 }
 
 }
 

-/* 
+/*

  * vm_read_list -
  * Read/copy a list of address ranges from specified map.
  *
  * vm_read_list -
  * Read/copy a list of address ranges from specified map.
  *


@@ -574,38 +726,40 @@ mach_vm_read_list(
 
 kern_return_t
 vm_read_list(
 
 kern_return_t
 vm_read_list(

-       vm_map_t                map,
-       vm_read_entry_t data_list,
-       natural_t               count)
+       vm_map_t                map,
+       vm_read_entry_t data_list,
+       natural_t               count)

 {
 {

-       mach_msg_type_number_t  i;
-       kern_return_t   error;
-       vm_map_copy_t   copy;
+       mach_msg_type_number_t  i;
+       kern_return_t   error;
+       vm_map_copy_t   copy;

 
 

-       if (map == VM_MAP_NULL)
-               return(KERN_INVALID_ARGUMENT);
+       if (map == VM_MAP_NULL ||
+           count > VM_MAP_ENTRY_MAX) {
+               return KERN_INVALID_ARGUMENT;
+       }

 
        error = KERN_SUCCESS;
 
        error = KERN_SUCCESS;

-       for(i=0; i<count; i++) {
+       for (i = 0; i < count; i++) {

                vm_map_address_t map_addr;
                vm_map_size_t map_size;
 
                map_addr = (vm_map_address_t)(data_list[i].address);
                map_size = (vm_map_size_t)(data_list[i].size);
 
                vm_map_address_t map_addr;
                vm_map_size_t map_size;
 
                map_addr = (vm_map_address_t)(data_list[i].address);
                map_size = (vm_map_size_t)(data_list[i].size);
 

-               if(map_size != 0) {
+               if (map_size != 0) {

                        error = vm_map_copyin(map,
                        error = vm_map_copyin(map,

-                                       map_addr,
-                                       map_size,
-                                       FALSE,  /* src_destroy */
-                                       &copy);
+                           map_addr,
+                           map_size,
+                           FALSE,              /* src_destroy */
+                           &copy);

                        if (KERN_SUCCESS == error) {
                        if (KERN_SUCCESS == error) {

-                               error = vm_map_copyout(current_task()->map, 
-                                               &map_addr,
-                                               copy);
+                               error = vm_map_copyout(current_task()->map,
+                                   &map_addr,
+                                   copy);

                                if (KERN_SUCCESS == error) {
                                        data_list[i].address =
                                if (KERN_SUCCESS == error) {
                                        data_list[i].address =

-                                               CAST_DOWN(vm_offset_t, map_addr);
+                                           CAST_DOWN(vm_offset_t, map_addr);

                                        continue;
                                }
                                vm_map_copy_discard(copy);
                                        continue;
                                }
                                vm_map_copy_discard(copy);


@@ -614,14 +768,14 @@ vm_read_list(
                data_list[i].address = (mach_vm_address_t)0;
                data_list[i].size = (mach_vm_size_t)0;
        }
                data_list[i].address = (mach_vm_address_t)0;
                data_list[i].size = (mach_vm_size_t)0;
        }

-       return(error);
+       return error;

 }
 
 /*
  * mach_vm_read_overwrite -
  * Overwrite a range of the current map with data from the specified
  * map/address range.
 }
 
 /*
  * mach_vm_read_overwrite -
  * Overwrite a range of the current map with data from the specified
  * map/address range.

- * 
+ *

  * In making an assumption that the current thread is local, it is
  * no longer cluster-safe without a fully supportive local proxy
  * thread/task (but we don't support cluster's anymore so this is moot).
  * In making an assumption that the current thread is local, it is
  * no longer cluster-safe without a fully supportive local proxy
  * thread/task (but we don't support cluster's anymore so this is moot).


@@ -629,39 +783,40 @@ vm_read_list(
 
 kern_return_t
 mach_vm_read_overwrite(
 
 kern_return_t
 mach_vm_read_overwrite(

-       vm_map_t                map,
-       mach_vm_address_t       address,
-       mach_vm_size_t  size,
-       mach_vm_address_t       data,
-       mach_vm_size_t  *data_size)
+       vm_map_t                map,
+       mach_vm_address_t       address,
+       mach_vm_size_t  size,
+       mach_vm_address_t       data,
+       mach_vm_size_t  *data_size)

 {
 {

-       kern_return_t   error;
-       vm_map_copy_t   copy;
+       kern_return_t   error;
+       vm_map_copy_t   copy;

 
 

-       if (map == VM_MAP_NULL)
-               return(KERN_INVALID_ARGUMENT);
+       if (map == VM_MAP_NULL) {
+               return KERN_INVALID_ARGUMENT;
+       }

 
        error = vm_map_copyin(map, (vm_map_address_t)address,
 
        error = vm_map_copyin(map, (vm_map_address_t)address,

-                               (vm_map_size_t)size, FALSE, &copy);
+           (vm_map_size_t)size, FALSE, &copy);

 
        if (KERN_SUCCESS == error) {
                error = vm_map_copy_overwrite(current_thread()->map,
 
        if (KERN_SUCCESS == error) {
                error = vm_map_copy_overwrite(current_thread()->map,

-                                       (vm_map_address_t)data, 
-                                       copy, FALSE);
+                   (vm_map_address_t)data,
+                   copy, FALSE);

                if (KERN_SUCCESS == error) {
                        *data_size = size;
                        return error;
                }
                vm_map_copy_discard(copy);
        }
                if (KERN_SUCCESS == error) {
                        *data_size = size;
                        return error;
                }
                vm_map_copy_discard(copy);
        }

-       return(error);
+       return error;

 }
 
 /*
  * vm_read_overwrite -
  * Overwrite a range of the current map with data from the specified
  * map/address range.
 }
 
 /*
  * vm_read_overwrite -
  * Overwrite a range of the current map with data from the specified
  * map/address range.

- * 
+ *

  * This routine adds the additional limitation that the source and
  * destination ranges must be describable with vm_address_t values
  * (i.e. the same size address spaces as the kernel, or at least the
  * This routine adds the additional limitation that the source and
  * destination ranges must be describable with vm_address_t values
  * (i.e. the same size address spaces as the kernel, or at least the


@@ -671,32 +826,33 @@ mach_vm_read_overwrite(
 
 kern_return_t
 vm_read_overwrite(
 
 kern_return_t
 vm_read_overwrite(

-       vm_map_t        map,
-       vm_address_t    address,
-       vm_size_t       size,
-       vm_address_t    data,
-       vm_size_t       *data_size)
+       vm_map_t        map,
+       vm_address_t    address,
+       vm_size_t       size,
+       vm_address_t    data,
+       vm_size_t       *data_size)

 {
 {

-       kern_return_t   error;
-       vm_map_copy_t   copy;
+       kern_return_t   error;
+       vm_map_copy_t   copy;

 
 

-       if (map == VM_MAP_NULL)
-               return(KERN_INVALID_ARGUMENT);
+       if (map == VM_MAP_NULL) {
+               return KERN_INVALID_ARGUMENT;
+       }

 
        error = vm_map_copyin(map, (vm_map_address_t)address,
 
        error = vm_map_copyin(map, (vm_map_address_t)address,

-                               (vm_map_size_t)size, FALSE, &copy);
+           (vm_map_size_t)size, FALSE, &copy);

 
        if (KERN_SUCCESS == error) {
                error = vm_map_copy_overwrite(current_thread()->map,
 
        if (KERN_SUCCESS == error) {
                error = vm_map_copy_overwrite(current_thread()->map,

-                                       (vm_map_address_t)data, 
-                                       copy, FALSE);
+                   (vm_map_address_t)data,
+                   copy, FALSE);

                if (KERN_SUCCESS == error) {
                        *data_size = size;
                        return error;
                }
                vm_map_copy_discard(copy);
        }
                if (KERN_SUCCESS == error) {
                        *data_size = size;
                        return error;
                }
                vm_map_copy_discard(copy);
        }

-       return(error);
+       return error;

 }
 
 
 }
 
 


@@ -707,16 +863,17 @@ vm_read_overwrite(
  */
 kern_return_t
 mach_vm_write(
  */
 kern_return_t
 mach_vm_write(

-       vm_map_t                        map,
-       mach_vm_address_t               address,
-       pointer_t                       data,
-       __unused mach_msg_type_number_t size)
+       vm_map_t                        map,
+       mach_vm_address_t               address,
+       pointer_t                       data,
+       __unused mach_msg_type_number_t size)

 {
 {

-       if (map == VM_MAP_NULL)
+       if (map == VM_MAP_NULL) {

                return KERN_INVALID_ARGUMENT;
                return KERN_INVALID_ARGUMENT;

+       }

 
        return vm_map_copy_overwrite(map, (vm_map_address_t)address,
 
        return vm_map_copy_overwrite(map, (vm_map_address_t)address,

-               (vm_map_copy_t) data, FALSE /* interruptible XXX */);
+                  (vm_map_copy_t) data, FALSE /* interruptible XXX */);

 }
 
 /*
 }
 
 /*


@@ -731,16 +888,17 @@ mach_vm_write(
  */
 kern_return_t
 vm_write(
  */
 kern_return_t
 vm_write(

-       vm_map_t                        map,
-       vm_address_t                    address,
-       pointer_t                       data,
-       __unused mach_msg_type_number_t size)
+       vm_map_t                        map,
+       vm_address_t                    address,
+       pointer_t                       data,
+       __unused mach_msg_type_number_t size)

 {
 {

-       if (map == VM_MAP_NULL)
+       if (map == VM_MAP_NULL) {

                return KERN_INVALID_ARGUMENT;
                return KERN_INVALID_ARGUMENT;

+       }

 
        return vm_map_copy_overwrite(map, (vm_map_address_t)address,
 
        return vm_map_copy_overwrite(map, (vm_map_address_t)address,

-               (vm_map_copy_t) data, FALSE /* interruptible XXX */);
+                  (vm_map_copy_t) data, FALSE /* interruptible XXX */);

 }
 
 /*
 }
 
 /*


@@ -751,54 +909,58 @@ vm_write(
  */
 kern_return_t
 mach_vm_copy(
  */
 kern_return_t
 mach_vm_copy(

-       vm_map_t                map,
-       mach_vm_address_t       source_address,
-       mach_vm_size_t  size,
-       mach_vm_address_t       dest_address)
+       vm_map_t                map,
+       mach_vm_address_t       source_address,
+       mach_vm_size_t  size,
+       mach_vm_address_t       dest_address)

 {
        vm_map_copy_t copy;
        kern_return_t kr;
 
 {
        vm_map_copy_t copy;
        kern_return_t kr;
 

-       if (map == VM_MAP_NULL)
+       if (map == VM_MAP_NULL) {

                return KERN_INVALID_ARGUMENT;
                return KERN_INVALID_ARGUMENT;

+       }

 
        kr = vm_map_copyin(map, (vm_map_address_t)source_address,
 
        kr = vm_map_copyin(map, (vm_map_address_t)source_address,

-                          (vm_map_size_t)size, FALSE, &copy);
+           (vm_map_size_t)size, FALSE, &copy);

 
        if (KERN_SUCCESS == kr) {
                kr = vm_map_copy_overwrite(map,
 
        if (KERN_SUCCESS == kr) {
                kr = vm_map_copy_overwrite(map,

-                               (vm_map_address_t)dest_address,
-                               copy, FALSE /* interruptible XXX */);
+                   (vm_map_address_t)dest_address,
+                   copy, FALSE /* interruptible XXX */);

 
 

-               if (KERN_SUCCESS != kr)
+               if (KERN_SUCCESS != kr) {

                        vm_map_copy_discard(copy);
                        vm_map_copy_discard(copy);

+               }

        }
        return kr;
 }
 
 kern_return_t
 vm_copy(
        }
        return kr;
 }
 
 kern_return_t
 vm_copy(

-       vm_map_t        map,
-       vm_address_t    source_address,
-       vm_size_t       size,
-       vm_address_t    dest_address)
+       vm_map_t        map,
+       vm_address_t    source_address,
+       vm_size_t       size,
+       vm_address_t    dest_address)

 {
        vm_map_copy_t copy;
        kern_return_t kr;
 
 {
        vm_map_copy_t copy;
        kern_return_t kr;
 

-       if (map == VM_MAP_NULL)
+       if (map == VM_MAP_NULL) {

                return KERN_INVALID_ARGUMENT;
                return KERN_INVALID_ARGUMENT;

+       }

 
        kr = vm_map_copyin(map, (vm_map_address_t)source_address,
 
        kr = vm_map_copyin(map, (vm_map_address_t)source_address,

-                          (vm_map_size_t)size, FALSE, &copy);
+           (vm_map_size_t)size, FALSE, &copy);

 
        if (KERN_SUCCESS == kr) {
                kr = vm_map_copy_overwrite(map,
 
        if (KERN_SUCCESS == kr) {
                kr = vm_map_copy_overwrite(map,

-                               (vm_map_address_t)dest_address,
-                               copy, FALSE /* interruptible XXX */);
+                   (vm_map_address_t)dest_address,
+                   copy, FALSE /* interruptible XXX */);

 
 

-               if (KERN_SUCCESS != kr)
+               if (KERN_SUCCESS != kr) {

                        vm_map_copy_discard(copy);
                        vm_map_copy_discard(copy);

+               }

        }
        return kr;
 }
        }
        return kr;
 }


@@ -815,306 +977,120 @@ vm_copy(
  *
  */
 kern_return_t
  *
  */
 kern_return_t

-mach_vm_map(
-       vm_map_t                target_map,
-       mach_vm_offset_t        *address,
-       mach_vm_size_t  initial_size,
-       mach_vm_offset_t        mask,
-       int                     flags,
-       ipc_port_t              port,
-       vm_object_offset_t      offset,
-       boolean_t               copy,
-       vm_prot_t               cur_protection,
-       vm_prot_t               max_protection,
-       vm_inherit_t            inheritance)
-{
-       vm_map_address_t        map_addr;
-       vm_map_size_t           map_size;
-       vm_object_t             object;
-       vm_object_size_t        size;
-       kern_return_t           result;
-
-       /*
-        * Check arguments for validity
-        */
-       if ((target_map == VM_MAP_NULL) ||
-               (cur_protection & ~VM_PROT_ALL) ||
-               (max_protection & ~VM_PROT_ALL) ||
-               (inheritance > VM_INHERIT_LAST_VALID) ||
-               initial_size == 0)
-               return(KERN_INVALID_ARGUMENT);
-
-       map_addr = vm_map_trunc_page(*address);
-       map_size = vm_map_round_page(initial_size);
-       size = vm_object_round_page(initial_size);      
-       
-       /*
-        * Find the vm object (if any) corresponding to this port.
-        */
-       if (!IP_VALID(port)) {
-               object = VM_OBJECT_NULL;
-               offset = 0;
-               copy = FALSE;
-       } else if (ip_kotype(port) == IKOT_NAMED_ENTRY) {
-               vm_named_entry_t        named_entry;
-
-               named_entry = (vm_named_entry_t)port->ip_kobject;
-               /* a few checks to make sure user is obeying rules */
-               if(size == 0) {
-                       if(offset >= named_entry->size)
-                               return(KERN_INVALID_RIGHT);
-                       size = named_entry->size - offset;
-               }
-               if((named_entry->protection & max_protection) != max_protection)
-                       return(KERN_INVALID_RIGHT);
-               if((named_entry->protection & cur_protection) != cur_protection)
-                       return(KERN_INVALID_RIGHT);
-               if(named_entry->size < (offset + size))
-                       return(KERN_INVALID_ARGUMENT);
-
-               /* the callers parameter offset is defined to be the */
-               /* offset from beginning of named entry offset in object */
-               offset = offset + named_entry->offset;
-               
-               named_entry_lock(named_entry);
-               if(named_entry->is_sub_map) {
-                       vm_map_entry_t          map_entry;
-
-                       named_entry_unlock(named_entry);
-                       vm_object_reference(vm_submap_object);
-                       if ((result = vm_map_enter(target_map,
-                               &map_addr, map_size,
-                               (vm_map_offset_t)mask, flags,
-                               vm_submap_object, 0,
-                               FALSE,
-                               cur_protection, max_protection, inheritance
-                               )) != KERN_SUCCESS) {
-                                       vm_object_deallocate(vm_submap_object);
-                       } else {
-                               char    alias;
-
-                               VM_GET_FLAGS_ALIAS(flags, alias);
-                               if ((alias == VM_MEMORY_SHARED_PMAP) &&
-                                       !copy) {
-                                       vm_map_submap(target_map, map_addr, 
-                                               map_addr + map_size, 
-                                               named_entry->backing.map,
-                                               (vm_map_offset_t)offset, TRUE);
-                               } else {
-                                       vm_map_submap(target_map, map_addr, 
-                                               map_addr + map_size, 
-                                               named_entry->backing.map,
-                                               (vm_map_offset_t)offset, FALSE);
-                               }
-                               if(copy) {
-                                       if(vm_map_lookup_entry(
-                                          target_map, map_addr, &map_entry)) {
-                                               map_entry->needs_copy = TRUE;
-                                       }
-                               }
-                               *address = map_addr;
-                       }
-                       return(result);
-
-               } else if (named_entry->is_pager) {
-                       unsigned int            access;
-                       vm_prot_t               protections;
-                       unsigned int            wimg_mode;
-                       boolean_t               cache_attr;
-
-                       protections = named_entry->protection 
-                                                       & VM_PROT_ALL;
-                       access = GET_MAP_MEM(named_entry->protection);
-
-                       object = vm_object_enter(
-                               named_entry->backing.pager, 
-                               named_entry->size, 
-                               named_entry->internal, 
-                               FALSE,
-                               FALSE);
-                       if (object == VM_OBJECT_NULL) {
-                               named_entry_unlock(named_entry);
-                               return(KERN_INVALID_OBJECT);
-                       }
-
-                       /* JMM - drop reference on pager here */
-
-                       /* create an extra ref for the named entry */
-                       vm_object_lock(object);
-                       vm_object_reference_locked(object);
-                       named_entry->backing.object = object;
-                       named_entry->is_pager = FALSE;
-                       named_entry_unlock(named_entry);
-
-                       wimg_mode = object->wimg_bits;
-                       if(access == MAP_MEM_IO) {
-                               wimg_mode = VM_WIMG_IO;
-                       } else if (access == MAP_MEM_COPYBACK) {
-                               wimg_mode = VM_WIMG_USE_DEFAULT;
-                       } else if (access == MAP_MEM_WTHRU) {
-                               wimg_mode = VM_WIMG_WTHRU;
-                       } else if (access == MAP_MEM_WCOMB) {
-                               wimg_mode = VM_WIMG_WCOMB;
-                       }
-                       if ((wimg_mode == VM_WIMG_IO)
-                               || (wimg_mode == VM_WIMG_WCOMB))
-                               cache_attr = TRUE;
-                       else 
-                               cache_attr = FALSE;
-
-                       /* wait for object (if any) to be ready */
-                       if (!named_entry->internal) {
-                               while (!object->pager_ready) {
-                                       vm_object_wait(object,
-                                                      VM_OBJECT_EVENT_PAGER_READY,
-                                                      THREAD_UNINT);
-                                       vm_object_lock(object);
-                               }
-                       }
-
-                       if(object->wimg_bits != wimg_mode) {
-                               vm_page_t p;
+mach_vm_map_external(
+       vm_map_t                target_map,
+       mach_vm_offset_t        *address,
+       mach_vm_size_t          initial_size,
+       mach_vm_offset_t        mask,
+       int                     flags,
+       ipc_port_t              port,
+       vm_object_offset_t      offset,
+       boolean_t               copy,
+       vm_prot_t               cur_protection,
+       vm_prot_t               max_protection,
+       vm_inherit_t            inheritance)
+{
+       vm_tag_t tag;
+
+       VM_GET_FLAGS_ALIAS(flags, tag);
+       return mach_vm_map_kernel(target_map, address, initial_size, mask,
+                  flags, VM_MAP_KERNEL_FLAGS_NONE, tag,
+                  port, offset, copy,
+                  cur_protection, max_protection,
+                  inheritance);
+}

 
 

-                               vm_object_paging_wait(object, THREAD_UNINT);
+kern_return_t
+mach_vm_map_kernel(
+       vm_map_t                target_map,
+       mach_vm_offset_t        *address,
+       mach_vm_size_t  initial_size,
+       mach_vm_offset_t        mask,
+       int                     flags,
+       vm_map_kernel_flags_t   vmk_flags,
+       vm_tag_t                tag,
+       ipc_port_t              port,
+       vm_object_offset_t      offset,
+       boolean_t               copy,
+       vm_prot_t               cur_protection,
+       vm_prot_t               max_protection,
+       vm_inherit_t            inheritance)
+{
+       kern_return_t           kr;
+       vm_map_offset_t         vmmaddr;

 
 

-                               object->wimg_bits = wimg_mode;
-                               queue_iterate(&object->memq, p, vm_page_t, listq) {
-                                       if (!p->fictitious) {
-                                               pmap_disconnect(p->phys_page);
-                                               if (cache_attr)
-                                                       pmap_sync_page_attributes_phys(p->phys_page);
-                                       }
-                               }
-                       }
-                       object->true_share = TRUE;
-                       if (object->copy_strategy == MEMORY_OBJECT_COPY_SYMMETRIC)
-                               object->copy_strategy = MEMORY_OBJECT_COPY_DELAY;
-                       vm_object_unlock(object);
-               } else {
-                       /* This is the case where we are going to map */
-                       /* an already mapped object.  If the object is */
-                       /* not ready it is internal.  An external     */
-                       /* object cannot be mapped until it is ready  */
-                       /* we can therefore avoid the ready check     */
-                       /* in this case.  */
-                       object = named_entry->backing.object;
-                       assert(object != VM_OBJECT_NULL);
-                       named_entry_unlock(named_entry);
-                       vm_object_reference(object);
-               }
-       } else if (ip_kotype(port) == IKOT_MEMORY_OBJECT) {
-               /*
-                * JMM - This is temporary until we unify named entries
-                * and raw memory objects.
-                *
-                * Detected fake ip_kotype for a memory object.  In
-                * this case, the port isn't really a port at all, but
-                * instead is just a raw memory object.
-                */
-                
-               if ((object = vm_object_enter((memory_object_t)port,
-                                             size, FALSE, FALSE, FALSE))
-                       == VM_OBJECT_NULL)
-                       return(KERN_INVALID_OBJECT);
+       vmmaddr = (vm_map_offset_t) *address;

 
 

-               /* wait for object (if any) to be ready */
-               if (object != VM_OBJECT_NULL) {
-                       if(object == kernel_object) {
-                               printf("Warning: Attempt to map kernel object"
-                                       " by a non-private kernel entity\n");
-                               return(KERN_INVALID_OBJECT);
-                       }
-                       vm_object_lock(object);
-                       while (!object->pager_ready) {
-                               vm_object_wait(object,
-                                       VM_OBJECT_EVENT_PAGER_READY,
-                                       THREAD_UNINT);
-                               vm_object_lock(object);
-                       }
-                       vm_object_unlock(object);
-               }
-       } else {
-               return (KERN_INVALID_OBJECT);
+       /* filter out any kernel-only flags */
+       if (flags & ~VM_FLAGS_USER_MAP) {
+               return KERN_INVALID_ARGUMENT;

        }
 
        }
 

-       /*
-        *      Perform the copy if requested
-        */
-
-       if (copy) {
-               vm_object_t             new_object;
-               vm_object_offset_t      new_offset;
-
-               result = vm_object_copy_strategically(object, offset, size,
-                               &new_object, &new_offset,
-                               &copy);
-
-
-               if (result == KERN_MEMORY_RESTART_COPY) {
-                       boolean_t success;
-                       boolean_t src_needs_copy;
-
-                       /*
-                        * XXX
-                        * We currently ignore src_needs_copy.
-                        * This really is the issue of how to make
-                        * MEMORY_OBJECT_COPY_SYMMETRIC safe for
-                        * non-kernel users to use. Solution forthcoming.
-                        * In the meantime, since we don't allow non-kernel
-                        * memory managers to specify symmetric copy,
-                        * we won't run into problems here.
-                        */
-                       new_object = object;
-                       new_offset = offset;
-                       success = vm_object_copy_quickly(&new_object,
-                                                        new_offset, size,
-                                                        &src_needs_copy,
-                                                        &copy);
-                       assert(success);
-                       result = KERN_SUCCESS;
-               }
-               /*
-                *      Throw away the reference to the
-                *      original object, as it won't be mapped.
-                */
-
-               vm_object_deallocate(object);
-
-               if (result != KERN_SUCCESS)
-                       return (result);
-
-               object = new_object;
-               offset = new_offset;
+       kr = vm_map_enter_mem_object(target_map,
+           &vmmaddr,
+           initial_size,
+           mask,
+           flags,
+           vmk_flags,
+           tag,
+           port,
+           offset,
+           copy,
+           cur_protection,
+           max_protection,
+           inheritance);
+
+#if KASAN
+       if (kr == KERN_SUCCESS && target_map->pmap == kernel_pmap) {
+               kasan_notify_address(vmmaddr, initial_size);

        }
        }

+#endif

 
 

-       if ((result = vm_map_enter(target_map,
-                                  &map_addr, map_size,
-                                  (vm_map_offset_t)mask,
-                                  flags,
-                                  object, offset,
-                                  copy,
-                                  cur_protection, max_protection, inheritance
-                                  )) != KERN_SUCCESS)
-               vm_object_deallocate(object);
-       *address = map_addr;
-       return(result);
+       *address = vmmaddr;
+       return kr;

 }
 
 
 /* legacy interface */
 kern_return_t
 }
 
 
 /* legacy interface */
 kern_return_t

-vm_map_64(
-       vm_map_t                target_map,
-       vm_offset_t             *address,
-       vm_size_t               size,
-       vm_offset_t             mask,
-       int                     flags,
-       ipc_port_t              port,
-       vm_object_offset_t      offset,
-       boolean_t               copy,
-       vm_prot_t               cur_protection,
-       vm_prot_t               max_protection,
-       vm_inherit_t            inheritance)
+vm_map_64_external(
+       vm_map_t                target_map,
+       vm_offset_t             *address,
+       vm_size_t               size,
+       vm_offset_t             mask,
+       int                     flags,
+       ipc_port_t              port,
+       vm_object_offset_t      offset,
+       boolean_t               copy,
+       vm_prot_t               cur_protection,
+       vm_prot_t               max_protection,
+       vm_inherit_t            inheritance)
+{
+       vm_tag_t tag;
+
+       VM_GET_FLAGS_ALIAS(flags, tag);
+       return vm_map_64_kernel(target_map, address, size, mask,
+                  flags, VM_MAP_KERNEL_FLAGS_NONE,
+                  tag, port, offset, copy,
+                  cur_protection, max_protection,
+                  inheritance);
+}
+
+kern_return_t
+vm_map_64_kernel(
+       vm_map_t                target_map,
+       vm_offset_t             *address,
+       vm_size_t               size,
+       vm_offset_t             mask,
+       int                     flags,
+       vm_map_kernel_flags_t   vmk_flags,
+       vm_tag_t                tag,
+       ipc_port_t              port,
+       vm_object_offset_t      offset,
+       boolean_t               copy,
+       vm_prot_t               cur_protection,
+       vm_prot_t               max_protection,
+       vm_inherit_t            inheritance)

 {
        mach_vm_address_t map_addr;
        mach_vm_size_t map_size;
 {
        mach_vm_address_t map_addr;
        mach_vm_size_t map_size;


@@ -1125,27 +1101,53 @@ vm_map_64(
        map_size = (mach_vm_size_t)size;
        map_mask = (mach_vm_offset_t)mask;
 
        map_size = (mach_vm_size_t)size;
        map_mask = (mach_vm_offset_t)mask;
 

-       kr = mach_vm_map(target_map, &map_addr, map_size, map_mask, flags,
-                        port, offset, copy, 
-                        cur_protection, max_protection, inheritance);
-       *address = CAST_DOWN(vm_address_t, map_addr);
+       kr = mach_vm_map_kernel(target_map, &map_addr, map_size, map_mask,
+           flags, vmk_flags, tag,
+           port, offset, copy,
+           cur_protection, max_protection, inheritance);
+       *address = CAST_DOWN(vm_offset_t, map_addr);

        return kr;
 }
 
 /* temporary, until world build */
 kern_return_t
        return kr;
 }
 
 /* temporary, until world build */
 kern_return_t

-vm_map(
-       vm_map_t                target_map,
-       vm_offset_t             *address,
-       vm_size_t               size,
-       vm_offset_t             mask,
-       int                     flags,
-       ipc_port_t              port,
-       vm_offset_t             offset,
-       boolean_t               copy,
-       vm_prot_t               cur_protection,
-       vm_prot_t               max_protection,
-       vm_inherit_t            inheritance)
+vm_map_external(
+       vm_map_t                target_map,
+       vm_offset_t             *address,
+       vm_size_t               size,
+       vm_offset_t             mask,
+       int                     flags,
+       ipc_port_t              port,
+       vm_offset_t             offset,
+       boolean_t               copy,
+       vm_prot_t               cur_protection,
+       vm_prot_t               max_protection,
+       vm_inherit_t            inheritance)
+{
+       vm_tag_t tag;
+
+       VM_GET_FLAGS_ALIAS(flags, tag);
+       return vm_map_kernel(target_map, address, size, mask,
+                  flags, VM_MAP_KERNEL_FLAGS_NONE, tag,
+                  port, offset, copy,
+                  cur_protection, max_protection, inheritance);
+}
+
+kern_return_t
+vm_map_kernel(
+       vm_map_t                target_map,
+       vm_offset_t             *address,
+       vm_size_t               size,
+       vm_offset_t             mask,
+       int                     flags,
+       vm_map_kernel_flags_t   vmk_flags,
+       vm_tag_t                tag,
+       ipc_port_t              port,
+       vm_offset_t             offset,
+       boolean_t               copy,
+       vm_prot_t               cur_protection,
+       vm_prot_t               max_protection,
+       vm_inherit_t            inheritance)

 {
        mach_vm_address_t map_addr;
        mach_vm_size_t map_size;
 {
        mach_vm_address_t map_addr;
        mach_vm_size_t map_size;


@@ -1158,10 +1160,11 @@ vm_map(
        map_mask = (mach_vm_offset_t)mask;
        obj_offset = (vm_object_offset_t)offset;
 
        map_mask = (mach_vm_offset_t)mask;
        obj_offset = (vm_object_offset_t)offset;
 

-       kr = mach_vm_map(target_map, &map_addr, map_size, map_mask, flags,
-                        port, obj_offset, copy, 
-                        cur_protection, max_protection, inheritance);
-       *address = CAST_DOWN(vm_address_t, map_addr);
+       kr = mach_vm_map_kernel(target_map, &map_addr, map_size, map_mask,
+           flags, vmk_flags, tag,
+           port, obj_offset, copy,
+           cur_protection, max_protection, inheritance);
+       *address = CAST_DOWN(vm_offset_t, map_addr);

        return kr;
 }
 
        return kr;
 }
 


@@ -1172,40 +1175,69 @@ vm_map(
  * over top of itself (with altered permissions and/or
  * as an in-place copy of itself).
  */
  * over top of itself (with altered permissions and/or
  * as an in-place copy of itself).
  */

+kern_return_t
+mach_vm_remap_external(
+       vm_map_t                target_map,
+       mach_vm_offset_t        *address,
+       mach_vm_size_t  size,
+       mach_vm_offset_t        mask,
+       int                     flags,
+       vm_map_t                src_map,
+       mach_vm_offset_t        memory_address,
+       boolean_t               copy,
+       vm_prot_t               *cur_protection,
+       vm_prot_t               *max_protection,
+       vm_inherit_t            inheritance)
+{
+       vm_tag_t tag;
+       VM_GET_FLAGS_ALIAS(flags, tag);
+
+       return mach_vm_remap_kernel(target_map, address, size, mask, flags, tag, src_map, memory_address,
+                  copy, cur_protection, max_protection, inheritance);
+}

 
 kern_return_t
 
 kern_return_t

-mach_vm_remap(
-       vm_map_t                target_map,
-       mach_vm_offset_t        *address,
-       mach_vm_size_t  size,
-       mach_vm_offset_t        mask,
-       boolean_t               anywhere,
-       vm_map_t                src_map,
-       mach_vm_offset_t        memory_address,
-       boolean_t               copy,
-       vm_prot_t               *cur_protection,
-       vm_prot_t               *max_protection,
-       vm_inherit_t            inheritance)
+mach_vm_remap_kernel(
+       vm_map_t                target_map,
+       mach_vm_offset_t        *address,
+       mach_vm_size_t  size,
+       mach_vm_offset_t        mask,
+       int                     flags,
+       vm_tag_t                tag,
+       vm_map_t                src_map,
+       mach_vm_offset_t        memory_address,
+       boolean_t               copy,
+       vm_prot_t               *cur_protection,
+       vm_prot_t               *max_protection,
+       vm_inherit_t            inheritance)

 {
 {

-       vm_map_offset_t         map_addr;
-       kern_return_t           kr;
+       vm_map_offset_t         map_addr;
+       kern_return_t           kr;
+
+       if (VM_MAP_NULL == target_map || VM_MAP_NULL == src_map) {
+               return KERN_INVALID_ARGUMENT;
+       }

 
 

-       if (VM_MAP_NULL == target_map || VM_MAP_NULL == src_map)
+       /* filter out any kernel-only flags */
+       if (flags & ~VM_FLAGS_USER_REMAP) {

                return KERN_INVALID_ARGUMENT;
                return KERN_INVALID_ARGUMENT;

+       }

 
        map_addr = (vm_map_offset_t)*address;
 
        kr = vm_map_remap(target_map,
 
        map_addr = (vm_map_offset_t)*address;
 
        kr = vm_map_remap(target_map,

-                         &map_addr,
-                         size,
-                         mask,
-                         anywhere,
-                         src_map,
-                         memory_address,
-                         copy,
-                         cur_protection,
-                         max_protection,
-                         inheritance);
+           &map_addr,
+           size,
+           mask,
+           flags,
+           VM_MAP_KERNEL_FLAGS_NONE,
+           tag,
+           src_map,
+           memory_address,
+           copy,
+           cur_protection,
+           max_protection,
+           inheritance);

        *address = map_addr;
        return kr;
 }
        *address = map_addr;
        return kr;
 }


@@ -1222,38 +1254,68 @@ mach_vm_remap(
  * kernel context).
  */
 kern_return_t
  * kernel context).
  */
 kern_return_t

-vm_remap(
-       vm_map_t                target_map,
-       vm_offset_t             *address,
-       vm_size_t               size,
-       vm_offset_t             mask,
-       boolean_t               anywhere,
-       vm_map_t                src_map,
-       vm_offset_t             memory_address,
-       boolean_t               copy,
-       vm_prot_t               *cur_protection,
-       vm_prot_t               *max_protection,
-       vm_inherit_t            inheritance)
+vm_remap_external(
+       vm_map_t                target_map,
+       vm_offset_t             *address,
+       vm_size_t               size,
+       vm_offset_t             mask,
+       int                     flags,
+       vm_map_t                src_map,
+       vm_offset_t             memory_address,
+       boolean_t               copy,
+       vm_prot_t               *cur_protection,
+       vm_prot_t               *max_protection,
+       vm_inherit_t            inheritance)
+{
+       vm_tag_t tag;
+       VM_GET_FLAGS_ALIAS(flags, tag);
+
+       return vm_remap_kernel(target_map, address, size, mask, flags, tag, src_map,
+                  memory_address, copy, cur_protection, max_protection, inheritance);
+}
+
+kern_return_t
+vm_remap_kernel(
+       vm_map_t                target_map,
+       vm_offset_t             *address,
+       vm_size_t               size,
+       vm_offset_t             mask,
+       int                     flags,
+       vm_tag_t                tag,
+       vm_map_t                src_map,
+       vm_offset_t             memory_address,
+       boolean_t               copy,
+       vm_prot_t               *cur_protection,
+       vm_prot_t               *max_protection,
+       vm_inherit_t            inheritance)

 {
 {

-       vm_map_offset_t         map_addr;
-       kern_return_t           kr;
+       vm_map_offset_t         map_addr;
+       kern_return_t           kr;
+
+       if (VM_MAP_NULL == target_map || VM_MAP_NULL == src_map) {
+               return KERN_INVALID_ARGUMENT;
+       }

 
 

-       if (VM_MAP_NULL == target_map || VM_MAP_NULL == src_map)
+       /* filter out any kernel-only flags */
+       if (flags & ~VM_FLAGS_USER_REMAP) {

                return KERN_INVALID_ARGUMENT;
                return KERN_INVALID_ARGUMENT;

+       }

 
        map_addr = (vm_map_offset_t)*address;
 
        kr = vm_map_remap(target_map,
 
        map_addr = (vm_map_offset_t)*address;
 
        kr = vm_map_remap(target_map,

-                         &map_addr,
-                         size,
-                         mask,
-                         anywhere,
-                         src_map,
-                         memory_address,
-                         copy,
-                         cur_protection,
-                         max_protection,
-                         inheritance);
+           &map_addr,
+           size,
+           mask,
+           flags,
+           VM_MAP_KERNEL_FLAGS_NONE,
+           tag,
+           src_map,
+           memory_address,
+           copy,
+           cur_protection,
+           max_protection,
+           inheritance);

        *address = CAST_DOWN(vm_offset_t, map_addr);
        return kr;
 }
        *address = CAST_DOWN(vm_offset_t, map_addr);
        return kr;
 }


@@ -1272,32 +1334,56 @@ vm_remap(
  *     [ To unwire the pages, specify VM_PROT_NONE. ]
  */
 kern_return_t
  *     [ To unwire the pages, specify VM_PROT_NONE. ]
  */
 kern_return_t

-mach_vm_wire(
-       host_priv_t             host_priv,
-       vm_map_t                map,
-       mach_vm_offset_t        start,
-       mach_vm_size_t  size,
-       vm_prot_t               access)
+mach_vm_wire_external(
+       host_priv_t             host_priv,
+       vm_map_t                map,
+       mach_vm_offset_t        start,
+       mach_vm_size_t  size,
+       vm_prot_t               access)
+{
+       return mach_vm_wire_kernel(host_priv, map, start, size, access, VM_KERN_MEMORY_MLOCK);
+}
+
+kern_return_t
+mach_vm_wire_kernel(
+       host_priv_t             host_priv,
+       vm_map_t                map,
+       mach_vm_offset_t        start,
+       mach_vm_size_t  size,
+       vm_prot_t               access,
+       vm_tag_t                tag)

 {
 {

-       kern_return_t           rc;
+       kern_return_t           rc;

 
 

-       if (host_priv == HOST_PRIV_NULL)
+       if (host_priv == HOST_PRIV_NULL) {

                return KERN_INVALID_HOST;
                return KERN_INVALID_HOST;

+       }

 
        assert(host_priv == &realhost);
 
 
        assert(host_priv == &realhost);
 

-       if (map == VM_MAP_NULL)
+       if (map == VM_MAP_NULL) {

                return KERN_INVALID_TASK;
                return KERN_INVALID_TASK;

+       }

 
 

-       if (access & ~VM_PROT_ALL)
+       if (access & ~VM_PROT_ALL || (start + size < start)) {

                return KERN_INVALID_ARGUMENT;
                return KERN_INVALID_ARGUMENT;

+       }

 
        if (access != VM_PROT_NONE) {
 
        if (access != VM_PROT_NONE) {

-               rc = vm_map_wire(map, vm_map_trunc_page(start),
-                                vm_map_round_page(start+size), access, TRUE);
+               rc = vm_map_wire_kernel(map,
+                   vm_map_trunc_page(start,
+                   VM_MAP_PAGE_MASK(map)),
+                   vm_map_round_page(start + size,
+                   VM_MAP_PAGE_MASK(map)),
+                   access, tag,
+                   TRUE);

        } else {
        } else {

-               rc = vm_map_unwire(map, vm_map_trunc_page(start),
-                                  vm_map_round_page(start+size), TRUE);
+               rc = vm_map_unwire(map,
+                   vm_map_trunc_page(start,
+                   VM_MAP_PAGE_MASK(map)),
+                   vm_map_round_page(start + size,
+                   VM_MAP_PAGE_MASK(map)),
+                   TRUE);

        }
        return rc;
 }
        }
        return rc;
 }


@@ -1312,33 +1398,45 @@ mach_vm_wire(
  */
 kern_return_t
 vm_wire(
  */
 kern_return_t
 vm_wire(

-       host_priv_t             host_priv,
-       register vm_map_t       map,
-       vm_offset_t             start,
-       vm_size_t               size,
-       vm_prot_t               access)
+       host_priv_t             host_priv,
+       vm_map_t                map,
+       vm_offset_t             start,
+       vm_size_t               size,
+       vm_prot_t               access)

 {
 {

-       kern_return_t           rc;
+       kern_return_t           rc;

 
 

-       if (host_priv == HOST_PRIV_NULL)
+       if (host_priv == HOST_PRIV_NULL) {

                return KERN_INVALID_HOST;
                return KERN_INVALID_HOST;

+       }

 
        assert(host_priv == &realhost);
 
 
        assert(host_priv == &realhost);
 

-       if (map == VM_MAP_NULL)
+       if (map == VM_MAP_NULL) {

                return KERN_INVALID_TASK;
                return KERN_INVALID_TASK;

+       }

 
 

-       if ((access & ~VM_PROT_ALL) || (start + size < start))
+       if ((access & ~VM_PROT_ALL) || (start + size < start)) {

                return KERN_INVALID_ARGUMENT;
                return KERN_INVALID_ARGUMENT;

+       }

 
        if (size == 0) {
                rc = KERN_SUCCESS;
        } else if (access != VM_PROT_NONE) {
 
        if (size == 0) {
                rc = KERN_SUCCESS;
        } else if (access != VM_PROT_NONE) {

-               rc = vm_map_wire(map, vm_map_trunc_page(start),
-                                vm_map_round_page(start+size), access, TRUE);
+               rc = vm_map_wire_kernel(map,
+                   vm_map_trunc_page(start,
+                   VM_MAP_PAGE_MASK(map)),
+                   vm_map_round_page(start + size,
+                   VM_MAP_PAGE_MASK(map)),
+                   access, VM_KERN_MEMORY_OSFMK,
+                   TRUE);

        } else {
        } else {

-               rc = vm_map_unwire(map, vm_map_trunc_page(start),
-                                  vm_map_round_page(start+size), TRUE);
+               rc = vm_map_unwire(map,
+                   vm_map_trunc_page(start,
+                   VM_MAP_PAGE_MASK(map)),
+                   vm_map_round_page(start + size,
+                   VM_MAP_PAGE_MASK(map)),
+                   TRUE);

        }
        return rc;
 }
        }
        return rc;
 }


@@ -1376,19 +1474,19 @@ vm_wire(
 
 kern_return_t
 mach_vm_msync(
 
 kern_return_t
 mach_vm_msync(

-       vm_map_t                map,
-       mach_vm_address_t       address,
-       mach_vm_size_t  size,
-       vm_sync_t               sync_flags)
+       vm_map_t                map,
+       mach_vm_address_t       address,
+       mach_vm_size_t  size,
+       vm_sync_t               sync_flags)

 {
 {

-
-       if (map == VM_MAP_NULL)
-               return(KERN_INVALID_TASK);
+       if (map == VM_MAP_NULL) {
+               return KERN_INVALID_TASK;
+       }

 
        return vm_map_msync(map, (vm_map_address_t)address,
 
        return vm_map_msync(map, (vm_map_address_t)address,

-                       (vm_map_size_t)size, sync_flags);
+                  (vm_map_size_t)size, sync_flags);

 }
 }

-      
+

 /*
  *     vm_msync
  *
 /*
  *     vm_msync
  *


@@ -1425,22 +1523,54 @@ mach_vm_msync(
 
 kern_return_t
 vm_msync(
 
 kern_return_t
 vm_msync(

-       vm_map_t        map,
-       vm_address_t    address,
-       vm_size_t       size,
-       vm_sync_t       sync_flags)
+       vm_map_t        map,
+       vm_address_t    address,
+       vm_size_t       size,
+       vm_sync_t       sync_flags)

 {
 {

-
-       if (map == VM_MAP_NULL)
-               return(KERN_INVALID_TASK);
+       if (map == VM_MAP_NULL) {
+               return KERN_INVALID_TASK;
+       }

 
        return vm_map_msync(map, (vm_map_address_t)address,
 
        return vm_map_msync(map, (vm_map_address_t)address,

-                       (vm_map_size_t)size, sync_flags);
+                  (vm_map_size_t)size, sync_flags);

 }
 
 
 }
 
 

+int
+vm_toggle_entry_reuse(int toggle, int *old_value)
+{
+       vm_map_t map = current_map();
+
+       assert(!map->is_nested_map);
+       if (toggle == VM_TOGGLE_GETVALUE && old_value != NULL) {
+               *old_value = map->disable_vmentry_reuse;
+       } else if (toggle == VM_TOGGLE_SET) {
+               vm_map_entry_t map_to_entry;
+
+               vm_map_lock(map);
+               vm_map_disable_hole_optimization(map);
+               map->disable_vmentry_reuse = TRUE;
+               __IGNORE_WCASTALIGN(map_to_entry = vm_map_to_entry(map));
+               if (map->first_free == map_to_entry) {
+                       map->highest_entry_end = vm_map_min(map);
+               } else {
+                       map->highest_entry_end = map->first_free->vme_end;
+               }
+               vm_map_unlock(map);
+       } else if (toggle == VM_TOGGLE_CLEAR) {
+               vm_map_lock(map);
+               map->disable_vmentry_reuse = FALSE;
+               vm_map_unlock(map);
+       } else {
+               return KERN_INVALID_ARGUMENT;
+       }
+
+       return KERN_SUCCESS;
+}
+

 /*
 /*

- *     mach_vm_behavior_set 
+ *     mach_vm_behavior_set

  *
  *     Sets the paging behavior attribute for the  specified range
  *     in the specified map.
  *
  *     Sets the paging behavior attribute for the  specified range
  *     in the specified map.


@@ -1448,25 +1578,47 @@ vm_msync(
  *     This routine will fail with KERN_INVALID_ADDRESS if any address
  *     in [start,start+size) is not a valid allocated memory region.
  */
  *     This routine will fail with KERN_INVALID_ADDRESS if any address
  *     in [start,start+size) is not a valid allocated memory region.
  */

-kern_return_t 
+kern_return_t

 mach_vm_behavior_set(
 mach_vm_behavior_set(

-       vm_map_t                map,
-       mach_vm_offset_t        start,
-       mach_vm_size_t  size,
-       vm_behavior_t           new_behavior)
+       vm_map_t                map,
+       mach_vm_offset_t        start,
+       mach_vm_size_t          size,
+       vm_behavior_t           new_behavior)

 {
 {

-       if ((map == VM_MAP_NULL) || (start + size < start))
-               return(KERN_INVALID_ARGUMENT);
+       vm_map_offset_t align_mask;

 
 

-       if (size == 0)
-               return KERN_SUCCESS;
+       if ((map == VM_MAP_NULL) || (start + size < start)) {
+               return KERN_INVALID_ARGUMENT;
+       }

 
 

-       return(vm_map_behavior_set(map, vm_map_trunc_page(start), 
-                                  vm_map_round_page(start+size), new_behavior));
-}
+       if (size == 0) {
+               return KERN_SUCCESS;
+       }
+
+       switch (new_behavior) {
+       case VM_BEHAVIOR_REUSABLE:
+       case VM_BEHAVIOR_REUSE:
+       case VM_BEHAVIOR_CAN_REUSE:
+               /*
+                * Align to the hardware page size, to allow
+                * malloc() to maximize the amount of re-usability,
+                * even on systems with larger software page size.
+                */
+               align_mask = PAGE_MASK;
+               break;
+       default:
+               align_mask = VM_MAP_PAGE_MASK(map);
+               break;
+       }
+
+       return vm_map_behavior_set(map,
+                  vm_map_trunc_page(start, align_mask),
+                  vm_map_round_page(start + size, align_mask),
+                  new_behavior);
+}

 
 /*
 
 /*

- *     vm_behavior_set 
+ *     vm_behavior_set

  *
  *     Sets the paging behavior attribute for the  specified range
  *     in the specified map.
  *
  *     Sets the paging behavior attribute for the  specified range
  *     in the specified map.


@@ -1478,21 +1630,21 @@ mach_vm_behavior_set(
  *     use of vm_offset_t (if the map provided is larger than the
  *     kernel's).
  */
  *     use of vm_offset_t (if the map provided is larger than the
  *     kernel's).
  */

-kern_return_t 
+kern_return_t

 vm_behavior_set(
 vm_behavior_set(

-       vm_map_t                map,
-       vm_offset_t             start,
-       vm_size_t               size,
-       vm_behavior_t           new_behavior)
+       vm_map_t                map,
+       vm_offset_t             start,
+       vm_size_t               size,
+       vm_behavior_t           new_behavior)

 {
 {

-       if ((map == VM_MAP_NULL) || (start + size < start))
-               return(KERN_INVALID_ARGUMENT);
-
-       if (size == 0)
-               return KERN_SUCCESS;
+       if (start + size < start) {
+               return KERN_INVALID_ARGUMENT;
+       }

 
 

-       return(vm_map_behavior_set(map, vm_map_trunc_page(start), 
-                                  vm_map_round_page(start+size), new_behavior));
+       return mach_vm_behavior_set(map,
+                  (mach_vm_offset_t) start,
+                  (mach_vm_size_t) size,
+                  new_behavior);

 }
 
 /*
 }
 
 /*


@@ -1511,32 +1663,34 @@ vm_behavior_set(
 
 kern_return_t
 mach_vm_region(
 
 kern_return_t
 mach_vm_region(

-       vm_map_t                 map,
-       mach_vm_offset_t        *address,               /* IN/OUT */
-       mach_vm_size_t  *size,                  /* OUT */
-       vm_region_flavor_t       flavor,                /* IN */
-       vm_region_info_t         info,                  /* OUT */
-       mach_msg_type_number_t  *count,                 /* IN/OUT */
-       mach_port_t             *object_name)           /* OUT */
+       vm_map_t                 map,
+       mach_vm_offset_t        *address,               /* IN/OUT */
+       mach_vm_size_t  *size,                  /* OUT */
+       vm_region_flavor_t       flavor,                /* IN */
+       vm_region_info_t         info,                  /* OUT */
+       mach_msg_type_number_t  *count,                 /* IN/OUT */
+       mach_port_t             *object_name)           /* OUT */

 {
 {

-       vm_map_offset_t         map_addr;
-       vm_map_size_t           map_size;
-       kern_return_t           kr;
+       vm_map_offset_t         map_addr;
+       vm_map_size_t           map_size;
+       kern_return_t           kr;

 
 

-       if (VM_MAP_NULL == map)
+       if (VM_MAP_NULL == map) {

                return KERN_INVALID_ARGUMENT;
                return KERN_INVALID_ARGUMENT;

+       }

 
        map_addr = (vm_map_offset_t)*address;
        map_size = (vm_map_size_t)*size;
 
        /* legacy conversion */
 
        map_addr = (vm_map_offset_t)*address;
        map_size = (vm_map_size_t)*size;
 
        /* legacy conversion */

-       if (VM_REGION_BASIC_INFO == flavor)
+       if (VM_REGION_BASIC_INFO == flavor) {

                flavor = VM_REGION_BASIC_INFO_64;
                flavor = VM_REGION_BASIC_INFO_64;

+       }

 
        kr = vm_map_region(map,
 
        kr = vm_map_region(map,

-                          &map_addr, &map_size,
-                          flavor, info, count,
-                          object_name);
+           &map_addr, &map_size,
+           flavor, info, count,
+           object_name);

 
        *address = map_addr;
        *size = map_size;
 
        *address = map_addr;
        *size = map_size;


@@ -1559,71 +1713,76 @@ mach_vm_region(
 
 kern_return_t
 vm_region_64(
 
 kern_return_t
 vm_region_64(

-       vm_map_t                 map,
-       vm_offset_t             *address,               /* IN/OUT */
-       vm_size_t               *size,                  /* OUT */
-       vm_region_flavor_t       flavor,                /* IN */
-       vm_region_info_t         info,                  /* OUT */
-       mach_msg_type_number_t  *count,                 /* IN/OUT */
-       mach_port_t             *object_name)           /* OUT */
+       vm_map_t                 map,
+       vm_offset_t             *address,               /* IN/OUT */
+       vm_size_t               *size,                  /* OUT */
+       vm_region_flavor_t       flavor,                /* IN */
+       vm_region_info_t         info,                  /* OUT */
+       mach_msg_type_number_t  *count,                 /* IN/OUT */
+       mach_port_t             *object_name)           /* OUT */

 {
 {

-       vm_map_offset_t         map_addr;
-       vm_map_size_t           map_size;
-       kern_return_t           kr;
+       vm_map_offset_t         map_addr;
+       vm_map_size_t           map_size;
+       kern_return_t           kr;

 
 

-       if (VM_MAP_NULL == map)
+       if (VM_MAP_NULL == map) {

                return KERN_INVALID_ARGUMENT;
                return KERN_INVALID_ARGUMENT;

+       }

 
        map_addr = (vm_map_offset_t)*address;
        map_size = (vm_map_size_t)*size;
 
        /* legacy conversion */
 
        map_addr = (vm_map_offset_t)*address;
        map_size = (vm_map_size_t)*size;
 
        /* legacy conversion */

-       if (VM_REGION_BASIC_INFO == flavor)
+       if (VM_REGION_BASIC_INFO == flavor) {

                flavor = VM_REGION_BASIC_INFO_64;
                flavor = VM_REGION_BASIC_INFO_64;

+       }

 
        kr = vm_map_region(map,
 
        kr = vm_map_region(map,

-                          &map_addr, &map_size,
-                          flavor, info, count,
-                          object_name);
+           &map_addr, &map_size,
+           flavor, info, count,
+           object_name);

 
        *address = CAST_DOWN(vm_offset_t, map_addr);
        *size = CAST_DOWN(vm_size_t, map_size);
 
 
        *address = CAST_DOWN(vm_offset_t, map_addr);
        *size = CAST_DOWN(vm_size_t, map_size);
 

-       if (KERN_SUCCESS == kr && map_addr + map_size > VM_MAX_ADDRESS)
+       if (KERN_SUCCESS == kr && map_addr + map_size > VM_MAX_ADDRESS) {

                return KERN_INVALID_ADDRESS;
                return KERN_INVALID_ADDRESS;

+       }

        return kr;
 }
 
 kern_return_t
 vm_region(
        return kr;
 }
 
 kern_return_t
 vm_region(

-       vm_map_t                        map,
-       vm_address_t                    *address,       /* IN/OUT */
-       vm_size_t                       *size,          /* OUT */
-       vm_region_flavor_t              flavor, /* IN */
-       vm_region_info_t                info,           /* OUT */
-       mach_msg_type_number_t  *count, /* IN/OUT */
-       mach_port_t                     *object_name)   /* OUT */
+       vm_map_t                        map,
+       vm_address_t                    *address,       /* IN/OUT */
+       vm_size_t                       *size,          /* OUT */
+       vm_region_flavor_t              flavor, /* IN */
+       vm_region_info_t                info,           /* OUT */
+       mach_msg_type_number_t  *count, /* IN/OUT */
+       mach_port_t                     *object_name)   /* OUT */

 {
 {

-       vm_map_address_t        map_addr;
-       vm_map_size_t           map_size;
-       kern_return_t           kr;
+       vm_map_address_t        map_addr;
+       vm_map_size_t           map_size;
+       kern_return_t           kr;

 
 

-       if (VM_MAP_NULL == map)
+       if (VM_MAP_NULL == map) {

                return KERN_INVALID_ARGUMENT;
                return KERN_INVALID_ARGUMENT;

+       }

 
        map_addr = (vm_map_address_t)*address;
        map_size = (vm_map_size_t)*size;
 
        kr = vm_map_region(map,
 
        map_addr = (vm_map_address_t)*address;
        map_size = (vm_map_size_t)*size;
 
        kr = vm_map_region(map,

-                          &map_addr, &map_size,
-                          flavor, info, count,
-                          object_name);
+           &map_addr, &map_size,
+           flavor, info, count,
+           object_name);

 
        *address = CAST_DOWN(vm_address_t, map_addr);
        *size = CAST_DOWN(vm_size_t, map_size);
 
 
        *address = CAST_DOWN(vm_address_t, map_addr);
        *size = CAST_DOWN(vm_size_t, map_size);
 

-       if (KERN_SUCCESS == kr && map_addr + map_size > VM_MAX_ADDRESS)
+       if (KERN_SUCCESS == kr && map_addr + map_size > VM_MAX_ADDRESS) {

                return KERN_INVALID_ADDRESS;
                return KERN_INVALID_ADDRESS;

+       }

        return kr;
 }
 
        return kr;
 }
 


@@ -1634,30 +1793,31 @@ vm_region(
  */
 kern_return_t
 mach_vm_region_recurse(
  */
 kern_return_t
 mach_vm_region_recurse(

-       vm_map_t                        map,
-       mach_vm_address_t               *address,
-       mach_vm_size_t          *size,
-       uint32_t                        *depth,
-       vm_region_recurse_info_t        info,
-       mach_msg_type_number_t  *infoCnt)
+       vm_map_t                        map,
+       mach_vm_address_t               *address,
+       mach_vm_size_t          *size,
+       uint32_t                        *depth,
+       vm_region_recurse_info_t        info,
+       mach_msg_type_number_t  *infoCnt)

 {
 {

-       vm_map_address_t        map_addr;
-       vm_map_size_t           map_size;
-       kern_return_t           kr;
+       vm_map_address_t        map_addr;
+       vm_map_size_t           map_size;
+       kern_return_t           kr;

 
 

-       if (VM_MAP_NULL == map)
+       if (VM_MAP_NULL == map) {

                return KERN_INVALID_ARGUMENT;
                return KERN_INVALID_ARGUMENT;

+       }

 
        map_addr = (vm_map_address_t)*address;
        map_size = (vm_map_size_t)*size;
 
        kr = vm_map_region_recurse_64(
 
        map_addr = (vm_map_address_t)*address;
        map_size = (vm_map_size_t)*size;
 
        kr = vm_map_region_recurse_64(

-                       map,
-                       &map_addr,
-                       &map_size,
-                       depth,
-                       (vm_region_submap_info_64_t)info,
-                       infoCnt);
+               map,
+               &map_addr,
+               &map_size,
+               depth,
+               (vm_region_submap_info_64_t)info,
+               infoCnt);

 
        *address = map_addr;
        *size = map_size;
 
        *address = map_addr;
        *size = map_size;


@@ -1671,109 +1831,141 @@ mach_vm_region_recurse(
  */
 kern_return_t
 vm_region_recurse_64(
  */
 kern_return_t
 vm_region_recurse_64(

-       vm_map_t                        map,
-       vm_address_t                    *address,
-       vm_size_t                       *size,
-       uint32_t                        *depth,
-       vm_region_recurse_info_64_t     info,
-       mach_msg_type_number_t  *infoCnt)
+       vm_map_t                        map,
+       vm_address_t                    *address,
+       vm_size_t                       *size,
+       uint32_t                        *depth,
+       vm_region_recurse_info_64_t     info,
+       mach_msg_type_number_t  *infoCnt)

 {
 {

-       vm_map_address_t        map_addr;
-       vm_map_size_t           map_size;
-       kern_return_t           kr;
+       vm_map_address_t        map_addr;
+       vm_map_size_t           map_size;
+       kern_return_t           kr;

 
 

-       if (VM_MAP_NULL == map)
+       if (VM_MAP_NULL == map) {

                return KERN_INVALID_ARGUMENT;
                return KERN_INVALID_ARGUMENT;

+       }

 
        map_addr = (vm_map_address_t)*address;
        map_size = (vm_map_size_t)*size;
 
        kr = vm_map_region_recurse_64(
 
        map_addr = (vm_map_address_t)*address;
        map_size = (vm_map_size_t)*size;
 
        kr = vm_map_region_recurse_64(

-                       map,
-                       &map_addr,
-                       &map_size,
-                       depth,
-                       (vm_region_submap_info_64_t)info,
-                       infoCnt);
+               map,
+               &map_addr,
+               &map_size,
+               depth,
+               (vm_region_submap_info_64_t)info,
+               infoCnt);

 
        *address = CAST_DOWN(vm_address_t, map_addr);
        *size = CAST_DOWN(vm_size_t, map_size);
 
 
        *address = CAST_DOWN(vm_address_t, map_addr);
        *size = CAST_DOWN(vm_size_t, map_size);
 

-       if (KERN_SUCCESS == kr && map_addr + map_size > VM_MAX_ADDRESS)
+       if (KERN_SUCCESS == kr && map_addr + map_size > VM_MAX_ADDRESS) {

                return KERN_INVALID_ADDRESS;
                return KERN_INVALID_ADDRESS;

+       }

        return kr;
 }
 
 kern_return_t
 vm_region_recurse(
        return kr;
 }
 
 kern_return_t
 vm_region_recurse(

-       vm_map_t                        map,
-       vm_offset_t             *address,       /* IN/OUT */
-       vm_size_t                       *size,          /* OUT */
-       natural_t                       *depth, /* IN/OUT */
-       vm_region_recurse_info_t        info32, /* IN/OUT */
-       mach_msg_type_number_t  *infoCnt)       /* IN/OUT */
+       vm_map_t                        map,
+       vm_offset_t             *address,       /* IN/OUT */
+       vm_size_t                       *size,          /* OUT */
+       natural_t                       *depth, /* IN/OUT */
+       vm_region_recurse_info_t        info32, /* IN/OUT */
+       mach_msg_type_number_t  *infoCnt)       /* IN/OUT */

 {
        vm_region_submap_info_data_64_t info64;
        vm_region_submap_info_t info;
 {
        vm_region_submap_info_data_64_t info64;
        vm_region_submap_info_t info;

-       vm_map_address_t        map_addr;
-       vm_map_size_t           map_size;
-       kern_return_t           kr;
+       vm_map_address_t        map_addr;
+       vm_map_size_t           map_size;
+       kern_return_t           kr;

 
 

-       if (VM_MAP_NULL == map || *infoCnt < VM_REGION_SUBMAP_INFO_COUNT)
+       if (VM_MAP_NULL == map || *infoCnt < VM_REGION_SUBMAP_INFO_COUNT) {

                return KERN_INVALID_ARGUMENT;
                return KERN_INVALID_ARGUMENT;

+       }
+

 
 

-       

        map_addr = (vm_map_address_t)*address;
        map_size = (vm_map_size_t)*size;
        info = (vm_region_submap_info_t)info32;
        *infoCnt = VM_REGION_SUBMAP_INFO_COUNT_64;
 
        map_addr = (vm_map_address_t)*address;
        map_size = (vm_map_size_t)*size;
        info = (vm_region_submap_info_t)info32;
        *infoCnt = VM_REGION_SUBMAP_INFO_COUNT_64;
 

-       kr = vm_map_region_recurse_64(map, &map_addr,&map_size,
-                                     depth, &info64, infoCnt);
+       kr = vm_map_region_recurse_64(map, &map_addr, &map_size,
+           depth, &info64, infoCnt);

 
        info->protection = info64.protection;
        info->max_protection = info64.max_protection;
        info->inheritance = info64.inheritance;
        info->offset = (uint32_t)info64.offset; /* trouble-maker */
 
        info->protection = info64.protection;
        info->max_protection = info64.max_protection;
        info->inheritance = info64.inheritance;
        info->offset = (uint32_t)info64.offset; /* trouble-maker */

-        info->user_tag = info64.user_tag;
-        info->pages_resident = info64.pages_resident;
-        info->pages_shared_now_private = info64.pages_shared_now_private;
-        info->pages_swapped_out = info64.pages_swapped_out;
-        info->pages_dirtied = info64.pages_dirtied;
-        info->ref_count = info64.ref_count;
-        info->shadow_depth = info64.shadow_depth;
-        info->external_pager = info64.external_pager;
-        info->share_mode = info64.share_mode;
+       info->user_tag = info64.user_tag;
+       info->pages_resident = info64.pages_resident;
+       info->pages_shared_now_private = info64.pages_shared_now_private;
+       info->pages_swapped_out = info64.pages_swapped_out;
+       info->pages_dirtied = info64.pages_dirtied;
+       info->ref_count = info64.ref_count;
+       info->shadow_depth = info64.shadow_depth;
+       info->external_pager = info64.external_pager;
+       info->share_mode = info64.share_mode;

        info->is_submap = info64.is_submap;
        info->behavior = info64.behavior;
        info->object_id = info64.object_id;
        info->is_submap = info64.is_submap;
        info->behavior = info64.behavior;
        info->object_id = info64.object_id;

-       info->user_wired_count = info64.user_wired_count; 
+       info->user_wired_count = info64.user_wired_count;

 
        *address = CAST_DOWN(vm_address_t, map_addr);
        *size = CAST_DOWN(vm_size_t, map_size);
        *infoCnt = VM_REGION_SUBMAP_INFO_COUNT;
 
 
        *address = CAST_DOWN(vm_address_t, map_addr);
        *size = CAST_DOWN(vm_size_t, map_size);
        *infoCnt = VM_REGION_SUBMAP_INFO_COUNT;
 

-       if (KERN_SUCCESS == kr && map_addr + map_size > VM_MAX_ADDRESS)
+       if (KERN_SUCCESS == kr && map_addr + map_size > VM_MAX_ADDRESS) {

                return KERN_INVALID_ADDRESS;
                return KERN_INVALID_ADDRESS;

+       }

        return kr;
 }
 
        return kr;
 }
 

+kern_return_t
+mach_vm_purgable_control(
+       vm_map_t                map,
+       mach_vm_offset_t        address,
+       vm_purgable_t           control,
+       int                     *state)
+{
+       if (VM_MAP_NULL == map) {
+               return KERN_INVALID_ARGUMENT;
+       }
+
+       if (control == VM_PURGABLE_SET_STATE_FROM_KERNEL) {
+               /* not allowed from user-space */
+               return KERN_INVALID_ARGUMENT;
+       }
+
+       return vm_map_purgable_control(map,
+                  vm_map_trunc_page(address, PAGE_MASK),
+                  control,
+                  state);
+}
+

 kern_return_t
 vm_purgable_control(
 kern_return_t
 vm_purgable_control(

-       vm_map_t                map,
-       vm_offset_t             address,
-       vm_purgable_t           control,
-       int                     *state)
+       vm_map_t                map,
+       vm_offset_t             address,
+       vm_purgable_t           control,
+       int                     *state)

 {
 {

-       if (VM_MAP_NULL == map)
+       if (VM_MAP_NULL == map) {

                return KERN_INVALID_ARGUMENT;
                return KERN_INVALID_ARGUMENT;

+       }
+
+       if (control == VM_PURGABLE_SET_STATE_FROM_KERNEL) {
+               /* not allowed from user-space */
+               return KERN_INVALID_ARGUMENT;
+       }

 
        return vm_map_purgable_control(map,
 
        return vm_map_purgable_control(map,

-                                      vm_map_trunc_page(address),
-                                      control,
-                                      state);
+                  vm_map_trunc_page(address, PAGE_MASK),
+                  control,
+                  state);

 }
 }

-                                       
+

 
 /*
  *     Ordinarily, the right to allocate CPM is restricted
 
 /*
  *     Ordinarily, the right to allocate CPM is restricted


@@ -1781,7 +1973,7 @@ vm_purgable_control(
  *     to the host priv port).  Set this variable to zero if
  *     you want to let any application allocate CPM.
  */
  *     to the host priv port).  Set this variable to zero if
  *     you want to let any application allocate CPM.
  */

-unsigned int   vm_allocate_cpm_privileged = 0;
+unsigned int    vm_allocate_cpm_privileged = 0;

 
 /*
  *     Allocate memory in the specified map, with the caveat that
 
 /*
  *     Allocate memory in the specified map, with the caveat that


@@ -1795,29 +1987,31 @@ unsigned int    vm_allocate_cpm_privileged = 0;
  */
 kern_return_t
 vm_allocate_cpm(
  */
 kern_return_t
 vm_allocate_cpm(

-       host_priv_t             host_priv,
-       vm_map_t                map,
-       vm_address_t            *addr,
-       vm_size_t               size,
-       int                     flags)
+       host_priv_t             host_priv,
+       vm_map_t                map,
+       vm_address_t            *addr,
+       vm_size_t               size,
+       int                     flags)

 {
 {

-       vm_map_address_t        map_addr;
-       vm_map_size_t           map_size;
-       kern_return_t           kr;
+       vm_map_address_t        map_addr;
+       vm_map_size_t           map_size;
+       kern_return_t           kr;

 
 

-       if (vm_allocate_cpm_privileged && HOST_PRIV_NULL == host_priv)
+       if (vm_allocate_cpm_privileged && HOST_PRIV_NULL == host_priv) {

                return KERN_INVALID_HOST;
                return KERN_INVALID_HOST;

+       }

 
 

-       if (VM_MAP_NULL == map)
+       if (VM_MAP_NULL == map) {

                return KERN_INVALID_ARGUMENT;
                return KERN_INVALID_ARGUMENT;

+       }

 
        map_addr = (vm_map_address_t)*addr;
        map_size = (vm_map_size_t)size;
 
        kr = vm_map_enter_cpm(map,
 
        map_addr = (vm_map_address_t)*addr;
        map_size = (vm_map_size_t)size;
 
        kr = vm_map_enter_cpm(map,

-                             &map_addr,
-                             map_size,
-                             flags);
+           &map_addr,
+           map_size,
+           flags);

 
        *addr = CAST_DOWN(vm_address_t, map_addr);
        return kr;
 
        *addr = CAST_DOWN(vm_address_t, map_addr);
        return kr;


@@ -1826,103 +2020,255 @@ vm_allocate_cpm(
 
 kern_return_t
 mach_vm_page_query(
 
 kern_return_t
 mach_vm_page_query(

-       vm_map_t                map,
-       mach_vm_offset_t        offset,
-       int                     *disposition,
-       int                     *ref_count)
+       vm_map_t                map,
+       mach_vm_offset_t        offset,
+       int                     *disposition,
+       int                     *ref_count)

 {
 {

-       if (VM_MAP_NULL == map)
+       if (VM_MAP_NULL == map) {

                return KERN_INVALID_ARGUMENT;
                return KERN_INVALID_ARGUMENT;

+       }

 
 

-       return vm_map_page_info(map,
-                               vm_map_trunc_page(offset),
-                               disposition, ref_count);
+       return vm_map_page_query_internal(
+               map,
+               vm_map_trunc_page(offset, PAGE_MASK),
+               disposition, ref_count);

 }
 
 kern_return_t
 vm_map_page_query(
 }
 
 kern_return_t
 vm_map_page_query(

-       vm_map_t                map,
-       vm_offset_t             offset,
-       int                     *disposition,
-       int                     *ref_count)
+       vm_map_t                map,
+       vm_offset_t             offset,
+       int                     *disposition,
+       int                     *ref_count)

 {
 {

-       if (VM_MAP_NULL == map)
+       if (VM_MAP_NULL == map) {

                return KERN_INVALID_ARGUMENT;
                return KERN_INVALID_ARGUMENT;

+       }

 
 

-       return vm_map_page_info(map,
-                               vm_map_trunc_page(offset),
-                               disposition, ref_count);
+       return vm_map_page_query_internal(
+               map,
+               vm_map_trunc_page(offset, PAGE_MASK),
+               disposition, ref_count);
+}
+
+kern_return_t
+mach_vm_page_range_query(
+       vm_map_t                map,
+       mach_vm_offset_t        address,
+       mach_vm_size_t          size,
+       mach_vm_address_t       dispositions_addr,
+       mach_vm_size_t          *dispositions_count)
+{
+       kern_return_t           kr = KERN_SUCCESS;
+       int                     num_pages = 0, i = 0;
+       mach_vm_size_t          curr_sz = 0, copy_sz = 0;
+       mach_vm_size_t          disp_buf_req_size = 0, disp_buf_total_size = 0;
+       mach_msg_type_number_t  count = 0;
+
+       void                    *info = NULL;
+       void                    *local_disp = NULL;;
+       vm_map_size_t           info_size = 0, local_disp_size = 0;
+       mach_vm_offset_t        start = 0, end = 0;
+
+       if (map == VM_MAP_NULL || dispositions_count == NULL) {
+               return KERN_INVALID_ARGUMENT;
+       }
+
+       disp_buf_req_size = (*dispositions_count * sizeof(int));
+       start = mach_vm_trunc_page(address);
+       end = mach_vm_round_page(address + size);
+
+       if (end < start) {
+               return KERN_INVALID_ARGUMENT;
+       }
+
+       if ((end - start) < size) {
+               /*
+                * Aligned size is less than unaligned size.
+                */
+               return KERN_INVALID_ARGUMENT;
+       }
+
+       if (disp_buf_req_size == 0 || (end == start)) {
+               return KERN_SUCCESS;
+       }
+
+       /*
+        * For large requests, we will go through them
+        * MAX_PAGE_RANGE_QUERY chunk at a time.
+        */
+
+       curr_sz = MIN(end - start, MAX_PAGE_RANGE_QUERY);
+       num_pages = (int) (curr_sz >> PAGE_SHIFT);
+
+       info_size = num_pages * sizeof(vm_page_info_basic_data_t);
+       info = kalloc(info_size);
+
+       if (info == NULL) {
+               return KERN_RESOURCE_SHORTAGE;
+       }
+
+       local_disp_size = num_pages * sizeof(int);
+       local_disp = kalloc(local_disp_size);
+
+       if (local_disp == NULL) {
+               kfree(info, info_size);
+               info = NULL;
+               return KERN_RESOURCE_SHORTAGE;
+       }
+
+       while (size) {
+               count = VM_PAGE_INFO_BASIC_COUNT;
+               kr = vm_map_page_range_info_internal(
+                       map,
+                       start,
+                       mach_vm_round_page(start + curr_sz),
+                       VM_PAGE_INFO_BASIC,
+                       (vm_page_info_t) info,
+                       &count);
+
+               assert(kr == KERN_SUCCESS);
+
+               for (i = 0; i < num_pages; i++) {
+                       ((int*)local_disp)[i] = ((vm_page_info_basic_t)info)[i].disposition;
+               }
+
+               copy_sz = MIN(disp_buf_req_size, num_pages * sizeof(int) /* an int per page */);
+               kr = copyout(local_disp, (mach_vm_address_t)dispositions_addr, copy_sz);
+
+               start += curr_sz;
+               disp_buf_req_size -= copy_sz;
+               disp_buf_total_size += copy_sz;
+
+               if (kr != 0) {
+                       break;
+               }
+
+               if ((disp_buf_req_size == 0) || (curr_sz >= size)) {
+                       /*
+                        * We might have inspected the full range OR
+                        * more than it esp. if the user passed in
+                        * non-page aligned start/size and/or if we
+                        * descended into a submap. We are done here.
+                        */
+
+                       size = 0;
+               } else {
+                       dispositions_addr += copy_sz;
+
+                       size -= curr_sz;
+
+                       curr_sz = MIN(mach_vm_round_page(size), MAX_PAGE_RANGE_QUERY);
+                       num_pages = (int)(curr_sz >> PAGE_SHIFT);
+               }
+       }
+
+       *dispositions_count = disp_buf_total_size / sizeof(int);
+
+       kfree(local_disp, local_disp_size);
+       local_disp = NULL;
+
+       kfree(info, info_size);
+       info = NULL;
+
+       return kr;
+}
+
+kern_return_t
+mach_vm_page_info(
+       vm_map_t                map,
+       mach_vm_address_t       address,
+       vm_page_info_flavor_t   flavor,
+       vm_page_info_t          info,
+       mach_msg_type_number_t  *count)
+{
+       kern_return_t   kr;
+
+       if (map == VM_MAP_NULL) {
+               return KERN_INVALID_ARGUMENT;
+       }
+
+       kr = vm_map_page_info(map, address, flavor, info, count);
+       return kr;

 }
 
 /* map a (whole) upl into an address space */
 kern_return_t
 vm_upl_map(
 }
 
 /* map a (whole) upl into an address space */
 kern_return_t
 vm_upl_map(

-       vm_map_t                map, 
-       upl_t                   upl, 
-       vm_offset_t             *dst_addr)
+       vm_map_t                map,
+       upl_t                   upl,
+       vm_address_t            *dst_addr)

 {
 {

-       vm_map_offset_t         map_addr;
-       kern_return_t           kr;
+       vm_map_offset_t         map_addr;
+       kern_return_t           kr;

 
 

-       if (VM_MAP_NULL == map)
+       if (VM_MAP_NULL == map) {

                return KERN_INVALID_ARGUMENT;
                return KERN_INVALID_ARGUMENT;

+       }

 
        kr = vm_map_enter_upl(map, upl, &map_addr);
 
        kr = vm_map_enter_upl(map, upl, &map_addr);

-       *dst_addr = CAST_DOWN(vm_offset_t, map_addr);
+       *dst_addr = CAST_DOWN(vm_address_t, map_addr);

        return kr;
 }
 
 kern_return_t
 vm_upl_unmap(
        return kr;
 }
 
 kern_return_t
 vm_upl_unmap(

-       vm_map_t                map,
-       upl_t                   upl)
+       vm_map_t                map,
+       upl_t                   upl)

 {
 {

-       if (VM_MAP_NULL == map)
+       if (VM_MAP_NULL == map) {

                return KERN_INVALID_ARGUMENT;
                return KERN_INVALID_ARGUMENT;

+       }

 
 

-       return (vm_map_remove_upl(map, upl));
+       return vm_map_remove_upl(map, upl);

 }
 
 /* Retrieve a upl for an object underlying an address range in a map */
 
 kern_return_t
 vm_map_get_upl(
 }
 
 /* Retrieve a upl for an object underlying an address range in a map */
 
 kern_return_t
 vm_map_get_upl(

-       vm_map_t                map,
-       vm_map_offset_t         map_offset,
-       upl_size_t              *upl_size,
-       upl_t                   *upl,
-       upl_page_info_array_t   page_list,
-       unsigned int            *count,
-       int                     *flags,
-       int                     force_data_sync)
+       vm_map_t                map,
+       vm_map_offset_t         map_offset,
+       upl_size_t              *upl_size,
+       upl_t                   *upl,
+       upl_page_info_array_t   page_list,
+       unsigned int            *count,
+       upl_control_flags_t     *flags,
+       vm_tag_t                tag,
+       int                     force_data_sync)

 {
 {

-       int             map_flags;
-       kern_return_t   kr;
+       upl_control_flags_t map_flags;
+       kern_return_t       kr;

 
 

-       if (VM_MAP_NULL == map)
+       if (VM_MAP_NULL == map) {

                return KERN_INVALID_ARGUMENT;
                return KERN_INVALID_ARGUMENT;

+       }

 
        map_flags = *flags & ~UPL_NOZEROFILL;
 
        map_flags = *flags & ~UPL_NOZEROFILL;

-       if (force_data_sync)
+       if (force_data_sync) {

                map_flags |= UPL_FORCE_DATA_SYNC;
                map_flags |= UPL_FORCE_DATA_SYNC;

+       }

 
        kr = vm_map_create_upl(map,
 
        kr = vm_map_create_upl(map,

-                              map_offset,
-                              upl_size,
-                              upl,
-                              page_list,
-                              count,
-                              &map_flags);
+           map_offset,
+           upl_size,
+           upl,
+           page_list,
+           count,
+           &map_flags,
+           tag);

 
        *flags = (map_flags & ~UPL_FORCE_DATA_SYNC);
        return kr;
 }
 
 
        *flags = (map_flags & ~UPL_FORCE_DATA_SYNC);
        return kr;
 }
 

-
-__private_extern__ kern_return_t
-mach_memory_entry_allocate(
-       vm_named_entry_t        *user_entry_p,
-       ipc_port_t              *user_handle_p);        /* forward */
+#if CONFIG_EMBEDDED
+extern int proc_selfpid(void);
+extern char *proc_name_address(void *p);
+int cs_executable_mem_entry = 0;
+int log_executable_mem_entry = 0;
+#endif /* CONFIG_EMBEDDED */

 
 /*
  * mach_make_memory_entry_64
 
 /*
  * mach_make_memory_entry_64


@@ -1932,135 +2278,170 @@ mach_memory_entry_allocate(
  * somewhere else. Rather than doing it all at once (and
  * without needing access to the other whole map).
  */
  * somewhere else. Rather than doing it all at once (and
  * without needing access to the other whole map).
  */

-

 kern_return_t
 mach_make_memory_entry_64(
 kern_return_t
 mach_make_memory_entry_64(

-       vm_map_t                target_map,
-       memory_object_size_t    *size,
+       vm_map_t                target_map,
+       memory_object_size_t    *size,

        memory_object_offset_t offset,
        memory_object_offset_t offset,

-       vm_prot_t               permission,
-       ipc_port_t              *object_handle,
-       ipc_port_t              parent_handle)
+       vm_prot_t               permission,
+       ipc_port_t              *object_handle,
+       ipc_port_t              parent_handle)

 {
 {

-       vm_map_version_t        version;
-       vm_named_entry_t        parent_entry;
-       vm_named_entry_t        user_entry;
-       ipc_port_t              user_handle;
-       kern_return_t           kr;
-       vm_map_t                real_map;
+       vm_named_entry_kernel_flags_t   vmne_kflags;
+
+       if ((permission & MAP_MEM_FLAGS_MASK) & ~MAP_MEM_FLAGS_USER) {
+               /*
+                * Unknown flag: reject for forward compatibility.
+                */
+               return KERN_INVALID_VALUE;
+       }
+
+       vmne_kflags = VM_NAMED_ENTRY_KERNEL_FLAGS_NONE;
+       if (permission & MAP_MEM_LEDGER_TAGGED) {
+               vmne_kflags.vmnekf_ledger_tag = VM_LEDGER_TAG_DEFAULT;
+       }
+       return mach_make_memory_entry_internal(target_map,
+                  size,
+                  offset,
+                  permission,
+                  vmne_kflags,
+                  object_handle,
+                  parent_handle);
+}
+
+kern_return_t
+mach_make_memory_entry_internal(
+       vm_map_t                target_map,
+       memory_object_size_t    *size,
+       memory_object_offset_t  offset,
+       vm_prot_t               permission,
+       vm_named_entry_kernel_flags_t   vmne_kflags,
+       ipc_port_t              *object_handle,
+       ipc_port_t              parent_handle)
+{
+       vm_map_version_t        version;
+       vm_named_entry_t        parent_entry;
+       vm_named_entry_t        user_entry;
+       ipc_port_t              user_handle;
+       kern_return_t           kr;
+       vm_map_t                real_map;

 
        /* needed for call to vm_map_lookup_locked */
 
        /* needed for call to vm_map_lookup_locked */

-       boolean_t               wired;
-       vm_object_offset_t      obj_off;
-       vm_prot_t               prot;
-       vm_map_offset_t         lo_offset, hi_offset;
-       vm_behavior_t           behavior;
-       vm_object_t             object;
-       vm_object_t             shadow_object;
+       boolean_t               wired;
+       boolean_t               iskernel;
+       vm_object_offset_t      obj_off;
+       vm_prot_t               prot;
+       struct vm_object_fault_info     fault_info = {};
+       vm_object_t             object;
+       vm_object_t             shadow_object;

 
        /* needed for direct map entry manipulation */
 
        /* needed for direct map entry manipulation */

-       vm_map_entry_t          map_entry;
-       vm_map_entry_t          next_entry;
-       vm_map_t                local_map;
-       vm_map_t                original_map = target_map;
-       vm_map_size_t           total_size;
-       vm_map_size_t           map_size;
-       vm_map_offset_t         map_offset;
-       vm_map_offset_t         local_offset;
-       vm_object_size_t        mappable_size;
-
-       unsigned int            access;
-       vm_prot_t               protections;
-       unsigned int            wimg_mode;
-       boolean_t               cache_attr = FALSE;
-
-       if (((permission & 0x00FF0000) &
-            ~(MAP_MEM_ONLY |
-              MAP_MEM_NAMED_CREATE |
-              MAP_MEM_PURGABLE | 
-              MAP_MEM_NAMED_REUSE))) {
+       vm_map_entry_t          map_entry;
+       vm_map_entry_t          next_entry;
+       vm_map_t                local_map;
+       vm_map_t                original_map = target_map;
+       vm_map_size_t           total_size, map_size;
+       vm_map_offset_t         map_start, map_end;
+       vm_map_offset_t         local_offset;
+       vm_object_size_t        mappable_size;
+
+       /*
+        * Stash the offset in the page for use by vm_map_enter_mem_object()
+        * in the VM_FLAGS_RETURN_DATA_ADDR/MAP_MEM_USE_DATA_ADDR case.
+        */
+       vm_object_offset_t      offset_in_page;
+
+       unsigned int            access;
+       vm_prot_t               protections;
+       vm_prot_t               original_protections, mask_protections;
+       unsigned int            wimg_mode;
+
+       boolean_t               force_shadow = FALSE;
+       boolean_t               use_data_addr;
+       boolean_t               use_4K_compat;
+#if VM_NAMED_ENTRY_LIST
+       int                     alias = -1;
+#endif /* VM_NAMED_ENTRY_LIST */
+
+       if ((permission & MAP_MEM_FLAGS_MASK) & ~MAP_MEM_FLAGS_ALL) {

                /*
                 * Unknown flag: reject for forward compatibility.
                 */
                return KERN_INVALID_VALUE;
        }
 
                /*
                 * Unknown flag: reject for forward compatibility.
                 */
                return KERN_INVALID_VALUE;
        }
 

-       if (parent_handle != IP_NULL &&
+       if (IP_VALID(parent_handle) &&

            ip_kotype(parent_handle) == IKOT_NAMED_ENTRY) {
            ip_kotype(parent_handle) == IKOT_NAMED_ENTRY) {

-               parent_entry = (vm_named_entry_t) parent_handle->ip_kobject;
+               parent_entry = (vm_named_entry_t) ip_get_kobject(parent_handle);

        } else {
                parent_entry = NULL;
        }
 
        } else {
                parent_entry = NULL;
        }
 

-       protections = permission & VM_PROT_ALL;
+       if (parent_entry && parent_entry->is_copy) {
+               return KERN_INVALID_ARGUMENT;
+       }
+
+       original_protections = permission & VM_PROT_ALL;
+       protections = original_protections;
+       mask_protections = permission & VM_PROT_IS_MASK;

        access = GET_MAP_MEM(permission);
        access = GET_MAP_MEM(permission);

+       use_data_addr = ((permission & MAP_MEM_USE_DATA_ADDR) != 0);
+       use_4K_compat = ((permission & MAP_MEM_4K_DATA_ADDR) != 0);

 
        user_handle = IP_NULL;
        user_entry = NULL;
 
 
        user_handle = IP_NULL;
        user_entry = NULL;
 

-       map_offset = vm_map_trunc_page(offset);
-       map_size = vm_map_round_page(*size);
+       map_start = vm_map_trunc_page(offset, PAGE_MASK);

 
        if (permission & MAP_MEM_ONLY) {
 
        if (permission & MAP_MEM_ONLY) {

-               boolean_t               parent_is_object;
+               boolean_t               parent_is_object;

 
 

-               if (parent_entry == NULL) {
+               map_end = vm_map_round_page(offset + *size, PAGE_MASK);
+               map_size = map_end - map_start;
+
+               if (use_data_addr || use_4K_compat || parent_entry == NULL) {

                        return KERN_INVALID_ARGUMENT;
                }
 
                        return KERN_INVALID_ARGUMENT;
                }
 

-               parent_is_object = !(parent_entry->is_sub_map || parent_entry->is_pager);
+               parent_is_object = !parent_entry->is_sub_map;

                object = parent_entry->backing.object;
                object = parent_entry->backing.object;

-               if(parent_is_object && object != VM_OBJECT_NULL)
+               if (parent_is_object && object != VM_OBJECT_NULL) {

                        wimg_mode = object->wimg_bits;
                        wimg_mode = object->wimg_bits;

-               else
-                       wimg_mode = VM_WIMG_DEFAULT;
-               if((access != GET_MAP_MEM(parent_entry->protection)) &&
-                               !(parent_entry->protection & VM_PROT_WRITE)) { 
+               } else {
+                       wimg_mode = VM_WIMG_USE_DEFAULT;
+               }
+               if ((access != GET_MAP_MEM(parent_entry->protection)) &&
+                   !(parent_entry->protection & VM_PROT_WRITE)) {

                        return KERN_INVALID_RIGHT;
                }
                        return KERN_INVALID_RIGHT;
                }

-               if(access == MAP_MEM_IO) {
-                  SET_MAP_MEM(access, parent_entry->protection);
-                  wimg_mode = VM_WIMG_IO;
-               } else if (access == MAP_MEM_COPYBACK) {
-                  SET_MAP_MEM(access, parent_entry->protection);
-                  wimg_mode = VM_WIMG_DEFAULT;
-               } else if (access == MAP_MEM_WTHRU) {
-                  SET_MAP_MEM(access, parent_entry->protection);
-                  wimg_mode = VM_WIMG_WTHRU;
-               } else if (access == MAP_MEM_WCOMB) {
-                  SET_MAP_MEM(access, parent_entry->protection);
-                  wimg_mode = VM_WIMG_WCOMB;
-               }
-               if(parent_is_object && object &&
-                       (access != MAP_MEM_NOOP) && 
-                       (!(object->nophyscache))) {
-                       if(object->wimg_bits != wimg_mode) {
-                          vm_page_t p;
-                          if ((wimg_mode == VM_WIMG_IO)
-                               || (wimg_mode == VM_WIMG_WCOMB))
-                               cache_attr = TRUE;
-                          else 
-                               cache_attr = FALSE;
-                          vm_object_lock(object);
-                          vm_object_paging_wait(object, THREAD_UNINT);
-                          object->wimg_bits = wimg_mode;
-                          queue_iterate(&object->memq, 
-                                               p, vm_page_t, listq) {
-                               if (!p->fictitious) {
-                                       pmap_disconnect(p->phys_page);
-                                       if (cache_attr)
-                                               pmap_sync_page_attributes_phys(p->phys_page);
-                               }
-                          }
-                          vm_object_unlock(object);
+               vm_prot_to_wimg(access, &wimg_mode);
+               if (access != MAP_MEM_NOOP) {
+                       SET_MAP_MEM(access, parent_entry->protection);
+               }
+               if (parent_is_object && object &&
+                   (access != MAP_MEM_NOOP) &&
+                   (!(object->nophyscache))) {
+                       if (object->wimg_bits != wimg_mode) {
+                               vm_object_lock(object);
+                               vm_object_change_wimg_mode(object, wimg_mode);
+                               vm_object_unlock(object);

                        }
                }
                        }
                }

-               if (object_handle)
+               if (object_handle) {

                        *object_handle = IP_NULL;
                        *object_handle = IP_NULL;

+               }

                return KERN_SUCCESS;
                return KERN_SUCCESS;

-       }
+       } else if (permission & MAP_MEM_NAMED_CREATE) {
+               int     ledger_flags = 0;
+               task_t  owner;
+
+               map_end = vm_map_round_page(offset + *size, PAGE_MASK);
+               map_size = map_end - map_start;
+
+               if (use_data_addr || use_4K_compat) {
+                       return KERN_INVALID_ARGUMENT;
+               }

 
 

-       if(permission & MAP_MEM_NAMED_CREATE) {

                kr = mach_memory_entry_allocate(&user_entry, &user_handle);
                if (kr != KERN_SUCCESS) {
                        return KERN_FAILURE;
                kr = mach_memory_entry_allocate(&user_entry, &user_handle);
                if (kr != KERN_SUCCESS) {
                        return KERN_FAILURE;


@@ -2069,9 +2450,9 @@ mach_make_memory_entry_64(
                /*
                 * Force the creation of the VM object now.
                 */
                /*
                 * Force the creation of the VM object now.
                 */

-               if (map_size > (vm_map_size_t) VM_MAX_ADDRESS) {
+               if (map_size > (vm_map_size_t) ANON_MAX_SIZE) {

                        /*
                        /*

-                        * LP64todo - for now, we can only allocate 4GB
+                        * LP64todo - for now, we can only allocate 4GB-4096

                         * internal objects because the default pager can't
                         * page bigger ones.  Remove this when it can.
                         */
                         * internal objects because the default pager can't
                         * page bigger ones.  Remove this when it can.
                         */


@@ -2082,52 +2463,117 @@ mach_make_memory_entry_64(
                object = vm_object_allocate(map_size);
                assert(object != VM_OBJECT_NULL);
 
                object = vm_object_allocate(map_size);
                assert(object != VM_OBJECT_NULL);
 

-               if (permission & MAP_MEM_PURGABLE) {
-                       if (! (permission & VM_PROT_WRITE)) {
-                               /* if we can't write, we can't purge */
+               /*
+                * XXX
+                * We use this path when we want to make sure that
+                * nobody messes with the object (coalesce, for
+                * example) before we map it.
+                * We might want to use these objects for transposition via
+                * vm_object_transpose() too, so we don't want any copy or
+                * shadow objects either...
+                */
+               object->copy_strategy = MEMORY_OBJECT_COPY_NONE;
+               object->true_share = TRUE;
+
+               owner = current_task();
+               if ((permission & MAP_MEM_PURGABLE) ||
+                   vmne_kflags.vmnekf_ledger_tag) {
+                       assert(object->vo_owner == NULL);
+                       assert(object->resident_page_count == 0);
+                       assert(object->wired_page_count == 0);
+                       assert(owner != TASK_NULL);
+                       if (vmne_kflags.vmnekf_ledger_no_footprint) {
+                               ledger_flags |= VM_LEDGER_FLAG_NO_FOOTPRINT;
+                               object->vo_no_footprint = TRUE;
+                       }
+                       if (permission & MAP_MEM_PURGABLE) {
+                               if (!(permission & VM_PROT_WRITE)) {
+                                       /* if we can't write, we can't purge */
+                                       vm_object_deallocate(object);
+                                       kr = KERN_INVALID_ARGUMENT;
+                                       goto make_mem_done;
+                               }
+                               object->purgable = VM_PURGABLE_NONVOLATILE;
+                               if (permission & MAP_MEM_PURGABLE_KERNEL_ONLY) {
+                                       object->purgeable_only_by_kernel = TRUE;
+                               }
+#if __arm64__
+                               if (owner->task_legacy_footprint) {
+                                       /*
+                                        * For ios11, we failed to account for
+                                        * this memory.  Keep doing that for
+                                        * legacy apps (built before ios12),
+                                        * for backwards compatibility's sake...
+                                        */
+                                       owner = kernel_task;
+                               }
+#endif /* __arm64__ */
+                               vm_object_lock(object);
+                               vm_purgeable_nonvolatile_enqueue(object, owner);
+                               vm_object_unlock(object);
+                       }
+               }
+
+               if (vmne_kflags.vmnekf_ledger_tag) {
+                       /*
+                        * Bill this object to the current task's
+                        * ledgers for the given tag.
+                        */
+                       if (vmne_kflags.vmnekf_ledger_no_footprint) {
+                               ledger_flags |= VM_LEDGER_FLAG_NO_FOOTPRINT;
+                       }
+                       vm_object_lock(object);
+                       object->vo_ledger_tag = vmne_kflags.vmnekf_ledger_tag;
+                       kr = vm_object_ownership_change(
+                               object,
+                               vmne_kflags.vmnekf_ledger_tag,
+                               owner, /* new owner */
+                               ledger_flags,
+                               FALSE); /* task_objq locked? */
+                       vm_object_unlock(object);
+                       if (kr != KERN_SUCCESS) {

                                vm_object_deallocate(object);
                                vm_object_deallocate(object);

-                               kr = KERN_INVALID_ARGUMENT;

                                goto make_mem_done;
                        }
                                goto make_mem_done;
                        }

-                       object->purgable = VM_OBJECT_PURGABLE_NONVOLATILE;

                }
 
                }
 

+#if CONFIG_SECLUDED_MEMORY
+               if (secluded_for_iokit && /* global boot-arg */
+                   ((permission & MAP_MEM_GRAB_SECLUDED)
+#if 11
+                   /* XXX FBDP for my testing only */
+                   || (secluded_for_fbdp && map_size == 97550336)
+#endif
+                   )) {
+#if 11
+                       if (!(permission & MAP_MEM_GRAB_SECLUDED) &&
+                           secluded_for_fbdp) {
+                               printf("FBDP: object %p size %lld can grab secluded\n", object, (uint64_t) map_size);
+                       }
+#endif
+                       object->can_grab_secluded = TRUE;
+                       assert(!object->eligible_for_secluded);
+               }
+#endif /* CONFIG_SECLUDED_MEMORY */
+

                /*
                 * The VM object is brand new and nobody else knows about it,
                 * so we don't need to lock it.
                 */
 
                wimg_mode = object->wimg_bits;
                /*
                 * The VM object is brand new and nobody else knows about it,
                 * so we don't need to lock it.
                 */
 
                wimg_mode = object->wimg_bits;

-               if (access == MAP_MEM_IO) {
-                       wimg_mode = VM_WIMG_IO;
-               } else if (access == MAP_MEM_COPYBACK) {
-                       wimg_mode = VM_WIMG_DEFAULT;
-               } else if (access == MAP_MEM_WTHRU) {
-                       wimg_mode = VM_WIMG_WTHRU;
-               } else if (access == MAP_MEM_WCOMB) {
-                       wimg_mode = VM_WIMG_WCOMB;
-               }
+               vm_prot_to_wimg(access, &wimg_mode);

                if (access != MAP_MEM_NOOP) {
                        object->wimg_bits = wimg_mode;
                }
                if (access != MAP_MEM_NOOP) {
                        object->wimg_bits = wimg_mode;
                }

-               /* the object has no pages, so no WIMG bits to update here */

 
 

-               /*
-                * XXX
-                * We use this path when we want to make sure that
-                * nobody messes with the object (coalesce, for
-                * example) before we map it.
-                * We might want to use these objects for transposition via
-                * vm_object_transpose() too, so we don't want any copy or
-                * shadow objects either...
-                */
-               object->copy_strategy = MEMORY_OBJECT_COPY_NONE;
+               /* the object has no pages, so no WIMG bits to update here */

 
                user_entry->backing.object = object;
                user_entry->internal = TRUE;
                user_entry->is_sub_map = FALSE;
 
                user_entry->backing.object = object;
                user_entry->internal = TRUE;
                user_entry->is_sub_map = FALSE;

-               user_entry->is_pager = FALSE;

                user_entry->offset = 0;
                user_entry->offset = 0;

+               user_entry->data_offset = 0;

                user_entry->protection = protections;
                SET_MAP_MEM(access, user_entry->protection);
                user_entry->size = map_size;
                user_entry->protection = protections;
                SET_MAP_MEM(access, user_entry->protection);
                user_entry->size = map_size;


@@ -2135,42 +2581,235 @@ mach_make_memory_entry_64(
                /* user_object pager and internal fields are not used */
                /* when the object field is filled in.                */
 
                /* user_object pager and internal fields are not used */
                /* when the object field is filled in.                */
 

-               *size = CAST_DOWN(vm_size_t, map_size);
+               *size = CAST_DOWN(vm_size_t, (user_entry->size -
+                   user_entry->data_offset));
+               *object_handle = user_handle;
+               return KERN_SUCCESS;
+       }
+
+       if (permission & MAP_MEM_VM_COPY) {
+               vm_map_copy_t   copy;
+
+               if (target_map == VM_MAP_NULL) {
+                       return KERN_INVALID_TASK;
+               }
+
+               map_end = vm_map_round_page(offset + *size, PAGE_MASK);
+               map_size = map_end - map_start;
+               if (use_data_addr || use_4K_compat) {
+                       offset_in_page = offset - map_start;
+                       if (use_4K_compat) {
+                               offset_in_page &= ~((signed)(0xFFF));
+                       }
+               } else {
+                       offset_in_page = 0;
+               }
+
+               kr = vm_map_copyin_internal(target_map,
+                   map_start,
+                   map_size,
+                   VM_MAP_COPYIN_ENTRY_LIST,
+                   &copy);
+               if (kr != KERN_SUCCESS) {
+                       return kr;
+               }
+
+               kr = mach_memory_entry_allocate(&user_entry, &user_handle);
+               if (kr != KERN_SUCCESS) {
+                       vm_map_copy_discard(copy);
+                       return KERN_FAILURE;
+               }
+
+               user_entry->backing.copy = copy;
+               user_entry->internal = FALSE;
+               user_entry->is_sub_map = FALSE;
+               user_entry->is_copy = TRUE;
+               user_entry->offset = 0;
+               user_entry->protection = protections;
+               user_entry->size = map_size;
+               user_entry->data_offset = offset_in_page;
+
+               *size = CAST_DOWN(vm_size_t, (user_entry->size -
+                   user_entry->data_offset));
+               *object_handle = user_handle;
+               return KERN_SUCCESS;
+       }
+
+       if (permission & MAP_MEM_VM_SHARE) {
+               vm_map_copy_t   copy;
+               vm_prot_t       cur_prot, max_prot;
+
+               if (target_map == VM_MAP_NULL) {
+                       return KERN_INVALID_TASK;
+               }
+
+               map_end = vm_map_round_page(offset + *size, PAGE_MASK);
+               map_size = map_end - map_start;
+               if (use_data_addr || use_4K_compat) {
+                       offset_in_page = offset - map_start;
+                       if (use_4K_compat) {
+                               offset_in_page &= ~((signed)(0xFFF));
+                       }
+               } else {
+                       offset_in_page = 0;
+               }
+
+               cur_prot = VM_PROT_ALL;
+               kr = vm_map_copy_extract(target_map,
+                   map_start,
+                   map_size,
+                   &copy,
+                   &cur_prot,
+                   &max_prot);
+               if (kr != KERN_SUCCESS) {
+                       return kr;
+               }
+
+               if (mask_protections) {
+                       /*
+                        * We just want as much of "original_protections"
+                        * as we can get out of the actual "cur_prot".
+                        */
+                       protections &= cur_prot;
+                       if (protections == VM_PROT_NONE) {
+                               /* no access at all: fail */
+                               vm_map_copy_discard(copy);
+                               return KERN_PROTECTION_FAILURE;
+                       }
+               } else {
+                       /*
+                        * We want exactly "original_protections"
+                        * out of "cur_prot".
+                        */
+                       if ((cur_prot & protections) != protections) {
+                               vm_map_copy_discard(copy);
+                               return KERN_PROTECTION_FAILURE;
+                       }
+               }
+
+               kr = mach_memory_entry_allocate(&user_entry, &user_handle);
+               if (kr != KERN_SUCCESS) {
+                       vm_map_copy_discard(copy);
+                       return KERN_FAILURE;
+               }
+
+               user_entry->backing.copy = copy;
+               user_entry->internal = FALSE;
+               user_entry->is_sub_map = FALSE;
+               user_entry->is_copy = TRUE;
+               user_entry->offset = 0;
+               user_entry->protection = protections;
+               user_entry->size = map_size;
+               user_entry->data_offset = offset_in_page;
+
+               *size = CAST_DOWN(vm_size_t, (user_entry->size -
+                   user_entry->data_offset));

                *object_handle = user_handle;
                return KERN_SUCCESS;
        }
 
        if (parent_entry == NULL ||
            (permission & MAP_MEM_NAMED_REUSE)) {
                *object_handle = user_handle;
                return KERN_SUCCESS;
        }
 
        if (parent_entry == NULL ||
            (permission & MAP_MEM_NAMED_REUSE)) {

+               map_end = vm_map_round_page(offset + *size, PAGE_MASK);
+               map_size = map_end - map_start;
+               if (use_data_addr || use_4K_compat) {
+                       offset_in_page = offset - map_start;
+                       if (use_4K_compat) {
+                               offset_in_page &= ~((signed)(0xFFF));
+                       }
+               } else {
+                       offset_in_page = 0;
+               }

 
                /* Create a named object based on address range within the task map */
                /* Go find the object at given address */
 
 
                /* Create a named object based on address range within the task map */
                /* Go find the object at given address */
 

+               if (target_map == VM_MAP_NULL) {
+                       return KERN_INVALID_TASK;
+               }
+

 redo_lookup:
 redo_lookup:

+               protections = original_protections;

                vm_map_lock_read(target_map);
 
                /* get the object associated with the target address */
                /* note we check the permission of the range against */
                /* that requested by the caller */
 
                vm_map_lock_read(target_map);
 
                /* get the object associated with the target address */
                /* note we check the permission of the range against */
                /* that requested by the caller */
 

-               kr = vm_map_lookup_locked(&target_map, map_offset, 
-                               protections, &version,
-                               &object, &obj_off, &prot, &wired, &behavior,
-                               &lo_offset, &hi_offset, &real_map);
+               kr = vm_map_lookup_locked(&target_map, map_start,
+                   protections | mask_protections,
+                   OBJECT_LOCK_EXCLUSIVE, &version,
+                   &object, &obj_off, &prot, &wired,
+                   &fault_info,
+                   &real_map);

                if (kr != KERN_SUCCESS) {
                        vm_map_unlock_read(target_map);
                        goto make_mem_done;
                }
                if (kr != KERN_SUCCESS) {
                        vm_map_unlock_read(target_map);
                        goto make_mem_done;
                }

-               if (((prot & protections) != protections) 
-                                       || (object == kernel_object)) {
+               if (mask_protections) {
+                       /*
+                        * The caller asked us to use the "protections" as
+                        * a mask, so restrict "protections" to what this
+                        * mapping actually allows.
+                        */
+                       protections &= prot;
+               }
+#if CONFIG_EMBEDDED
+               /*
+                * Wiring would copy the pages to a shadow object.
+                * The shadow object would not be code-signed so
+                * attempting to execute code from these copied pages
+                * would trigger a code-signing violation.
+                */
+               if (prot & VM_PROT_EXECUTE) {
+                       if (log_executable_mem_entry) {
+                               void *bsd_info;
+                               bsd_info = current_task()->bsd_info;
+                               printf("pid %d[%s] making memory entry out of "
+                                   "executable range from 0x%llx to 0x%llx:"
+                                   "might cause code-signing issues "
+                                   "later\n",
+                                   proc_selfpid(),
+                                   (bsd_info != NULL
+                                   ? proc_name_address(bsd_info)
+                                   : "?"),
+                                   (uint64_t) map_start,
+                                   (uint64_t) map_end);
+                       }
+                       DTRACE_VM2(cs_executable_mem_entry,
+                           uint64_t, (uint64_t)map_start,
+                           uint64_t, (uint64_t)map_end);
+                       cs_executable_mem_entry++;
+
+#if 11
+                       /*
+                        * We don't know how the memory entry will be used.
+                        * It might never get wired and might not cause any
+                        * trouble, so let's not reject this request...
+                        */
+#else /* 11 */
+                       kr = KERN_PROTECTION_FAILURE;
+                       vm_object_unlock(object);
+                       vm_map_unlock_read(target_map);
+                       if (real_map != target_map) {
+                               vm_map_unlock_read(real_map);
+                       }
+                       goto make_mem_done;
+#endif /* 11 */
+               }
+#endif /* CONFIG_EMBEDDED */
+
+               if (((prot & protections) != protections)
+                   || (object == kernel_object)) {

                        kr = KERN_INVALID_RIGHT;
                        vm_object_unlock(object);
                        vm_map_unlock_read(target_map);
                        kr = KERN_INVALID_RIGHT;
                        vm_object_unlock(object);
                        vm_map_unlock_read(target_map);

-                       if(real_map != target_map)
+                       if (real_map != target_map) {

                                vm_map_unlock_read(real_map);
                                vm_map_unlock_read(real_map);

-                       if(object == kernel_object) {
+                       }
+                       if (object == kernel_object) {

                                printf("Warning: Attempt to create a named"
                                printf("Warning: Attempt to create a named"

-                                       " entry from the kernel_object\n");
+                                   " entry from the kernel_object\n");

                        }
                        goto make_mem_done;
                }
                        }
                        goto make_mem_done;
                }


@@ -2193,116 +2832,191 @@ redo_lookup:
                vm_object_unlock(object);
 
                local_map = original_map;
                vm_object_unlock(object);
 
                local_map = original_map;

-               local_offset = map_offset;
-               if(target_map != local_map) {
+               local_offset = map_start;
+               if (target_map != local_map) {

                        vm_map_unlock_read(target_map);
                        vm_map_unlock_read(target_map);

-                       if(real_map != target_map)
+                       if (real_map != target_map) {

                                vm_map_unlock_read(real_map);
                                vm_map_unlock_read(real_map);

+                       }

                        vm_map_lock_read(local_map);
                        target_map = local_map;
                        real_map = local_map;
                }
                        vm_map_lock_read(local_map);
                        target_map = local_map;
                        real_map = local_map;
                }

-               while(TRUE) {
-                  if(!vm_map_lookup_entry(local_map, 
-                                               local_offset, &map_entry)) {
-                       kr = KERN_INVALID_ARGUMENT;
-                        vm_map_unlock_read(target_map);
-                       if(real_map != target_map)
-                               vm_map_unlock_read(real_map);
-                        vm_object_deallocate(object); /* release extra ref */
-                       object = VM_OBJECT_NULL;
-                        goto make_mem_done;
-                  }
-                  if(!(map_entry->is_sub_map)) {
-                     if(map_entry->object.vm_object != object) {
-                        kr = KERN_INVALID_ARGUMENT;
-                         vm_map_unlock_read(target_map);
-                        if(real_map != target_map)
-                               vm_map_unlock_read(real_map);
-                         vm_object_deallocate(object); /* release extra ref */
-                        object = VM_OBJECT_NULL;
-                         goto make_mem_done;
-                     }
-                     break;
-                  } else {
-                       vm_map_t        tmap;
-                       tmap = local_map;
-                       local_map = map_entry->object.sub_map;
-                       
-                       vm_map_lock_read(local_map);
-                       vm_map_unlock_read(tmap);
-                       target_map = local_map;
-                       real_map = local_map;
-                       local_offset = local_offset - map_entry->vme_start;
-                       local_offset += map_entry->offset;
-                  }
+               while (TRUE) {
+                       if (!vm_map_lookup_entry(local_map,
+                           local_offset, &map_entry)) {
+                               kr = KERN_INVALID_ARGUMENT;
+                               vm_map_unlock_read(target_map);
+                               if (real_map != target_map) {
+                                       vm_map_unlock_read(real_map);
+                               }
+                               vm_object_deallocate(object); /* release extra ref */
+                               object = VM_OBJECT_NULL;
+                               goto make_mem_done;
+                       }
+                       iskernel = (local_map->pmap == kernel_pmap);
+                       if (!(map_entry->is_sub_map)) {
+                               if (VME_OBJECT(map_entry) != object) {
+                                       kr = KERN_INVALID_ARGUMENT;
+                                       vm_map_unlock_read(target_map);
+                                       if (real_map != target_map) {
+                                               vm_map_unlock_read(real_map);
+                                       }
+                                       vm_object_deallocate(object); /* release extra ref */
+                                       object = VM_OBJECT_NULL;
+                                       goto make_mem_done;
+                               }
+                               break;
+                       } else {
+                               vm_map_t        tmap;
+                               tmap = local_map;
+                               local_map = VME_SUBMAP(map_entry);
+
+                               vm_map_lock_read(local_map);
+                               vm_map_unlock_read(tmap);
+                               target_map = local_map;
+                               real_map = local_map;
+                               local_offset = local_offset - map_entry->vme_start;
+                               local_offset += VME_OFFSET(map_entry);
+                       }

                }
 
                }
 

+#if VM_NAMED_ENTRY_LIST
+               alias = VME_ALIAS(map_entry);
+#endif /* VM_NAMED_ENTRY_LIST */
+

                /*
                 * We found the VM map entry, lock the VM object again.
                 */
                vm_object_lock(object);
                /*
                 * We found the VM map entry, lock the VM object again.
                 */
                vm_object_lock(object);

-               if(map_entry->wired_count) {
-                        /* JMM - The check below should be reworked instead. */
-                        object->true_share = TRUE;
-                     }
-               if(((map_entry->max_protection) & protections) != protections) {
-                        kr = KERN_INVALID_RIGHT;
-                         vm_object_unlock(object);
-                         vm_map_unlock_read(target_map);
-                        if(real_map != target_map)
+               if (map_entry->wired_count) {
+                       /* JMM - The check below should be reworked instead. */
+                       object->true_share = TRUE;
+               }
+               if (mask_protections) {
+                       /*
+                        * The caller asked us to use the "protections" as
+                        * a mask, so restrict "protections" to what this
+                        * mapping actually allows.
+                        */
+                       protections &= map_entry->max_protection;
+               }
+               if (((map_entry->max_protection) & protections) != protections) {
+                       kr = KERN_INVALID_RIGHT;
+                       vm_object_unlock(object);
+                       vm_map_unlock_read(target_map);
+                       if (real_map != target_map) {

                                vm_map_unlock_read(real_map);
                                vm_map_unlock_read(real_map);

-                        vm_object_deallocate(object);
-                        object = VM_OBJECT_NULL;
-                         goto make_mem_done;
+                       }
+                       vm_object_deallocate(object);
+                       object = VM_OBJECT_NULL;
+                       goto make_mem_done;

                }
 
                }
 

-               mappable_size  =  hi_offset - obj_off;
+               mappable_size = fault_info.hi_offset - obj_off;

                total_size = map_entry->vme_end - map_entry->vme_start;
                total_size = map_entry->vme_end - map_entry->vme_start;

-               if(map_size > mappable_size) {
+               if (map_size > mappable_size) {

                        /* try to extend mappable size if the entries */
                        /* following are from the same object and are */
                        /* compatible */
                        next_entry = map_entry->vme_next;
                        /* lets see if the next map entry is still   */
                        /* pointing at this object and is contiguous */
                        /* try to extend mappable size if the entries */
                        /* following are from the same object and are */
                        /* compatible */
                        next_entry = map_entry->vme_next;
                        /* lets see if the next map entry is still   */
                        /* pointing at this object and is contiguous */

-                       while(map_size > mappable_size) {
-                               if((next_entry->object.vm_object == object) &&
-                                       (next_entry->vme_start == 
-                                               next_entry->vme_prev->vme_end) &&
-                                       (next_entry->offset == 
-                                          next_entry->vme_prev->offset + 
-                                          (next_entry->vme_prev->vme_end - 
-                                          next_entry->vme_prev->vme_start))) {
-                                       if(((next_entry->max_protection) 
-                                               & protections) != protections) {
-                                               break;
+                       while (map_size > mappable_size) {
+                               if ((VME_OBJECT(next_entry) == object) &&
+                                   (next_entry->vme_start ==
+                                   next_entry->vme_prev->vme_end) &&
+                                   (VME_OFFSET(next_entry) ==
+                                   (VME_OFFSET(next_entry->vme_prev) +
+                                   (next_entry->vme_prev->vme_end -
+                                   next_entry->vme_prev->vme_start)))) {
+                                       if (mask_protections) {
+                                               /*
+                                                * The caller asked us to use
+                                                * the "protections" as a mask,
+                                                * so restrict "protections" to
+                                                * what this mapping actually
+                                                * allows.
+                                                */
+                                               protections &= next_entry->max_protection;
+                                       }
+                                       if ((next_entry->wired_count) &&
+                                           (map_entry->wired_count == 0)) {
+                                               break;
+                                       }
+                                       if (((next_entry->max_protection)
+                                           & protections) != protections) {
+                                               break;

                                        }
                                        if (next_entry->needs_copy !=
                                        }
                                        if (next_entry->needs_copy !=

-                                           map_entry->needs_copy)
+                                           map_entry->needs_copy) {

                                                break;
                                                break;

+                                       }

                                        mappable_size += next_entry->vme_end
                                        mappable_size += next_entry->vme_end

-                                               - next_entry->vme_start;
+                                           - next_entry->vme_start;

                                        total_size += next_entry->vme_end
                                        total_size += next_entry->vme_end

-                                               - next_entry->vme_start;
+                                           - next_entry->vme_start;

                                        next_entry = next_entry->vme_next;
                                } else {
                                        break;
                                }
                                        next_entry = next_entry->vme_next;
                                } else {
                                        break;
                                }

-                       

                        }
                }
 
                        }
                }
 

-               if(object->internal) {
-                       /* vm_map_lookup_locked will create a shadow if   */
-                       /* needs_copy is set but does not check for the   */
-                       /* other two conditions shown. It is important to */ 
+               /* vm_map_entry_should_cow_for_true_share() checks for malloc tags,
+                * never true in kernel */
+               if (!iskernel && vm_map_entry_should_cow_for_true_share(map_entry) &&
+                   object->vo_size > map_size &&
+                   map_size != 0) {
+                       /*
+                        * Set up the targeted range for copy-on-write to
+                        * limit the impact of "true_share"/"copy_delay" to
+                        * that range instead of the entire VM object...
+                        */
+
+                       vm_object_unlock(object);
+                       if (vm_map_lock_read_to_write(target_map)) {
+                               vm_object_deallocate(object);
+                               target_map = original_map;
+                               goto redo_lookup;
+                       }
+
+                       vm_map_clip_start(target_map,
+                           map_entry,
+                           vm_map_trunc_page(map_start,
+                           VM_MAP_PAGE_MASK(target_map)));
+                       vm_map_clip_end(target_map,
+                           map_entry,
+                           (vm_map_round_page(map_end,
+                           VM_MAP_PAGE_MASK(target_map))));
+                       force_shadow = TRUE;
+
+                       if ((map_entry->vme_end - offset) < map_size) {
+                               map_size = map_entry->vme_end - map_start;
+                       }
+                       total_size = map_entry->vme_end - map_entry->vme_start;
+
+                       vm_map_lock_write_to_read(target_map);
+                       vm_object_lock(object);
+               }
+
+               if (object->internal) {
+                       /* vm_map_lookup_locked will create a shadow if   */
+                       /* needs_copy is set but does not check for the   */
+                       /* other two conditions shown. It is important to */

                        /* set up an object which will not be pulled from */
                        /* under us.  */
 
                        /* set up an object which will not be pulled from */
                        /* under us.  */
 

-                       if ((map_entry->needs_copy  || object->shadowed ||
-                            (object->size > total_size))
-                                       && !object->true_share) {
+                       if (force_shadow ||
+                           ((map_entry->needs_copy ||
+                           object->shadowed ||
+                           (object->vo_size > total_size &&
+                           (VME_OFFSET(map_entry) != 0 ||
+                           object->vo_size >
+                           vm_map_round_page(total_size,
+                           VM_MAP_PAGE_MASK(target_map)))))
+                           && !object->true_share
+                           && object->copy_strategy == MEMORY_OBJECT_COPY_SYMMETRIC)) {

                                /*
                                 * We have to unlock the VM object before
                                 * trying to upgrade the VM map lock, to
                                /*
                                 * We have to unlock the VM object before
                                 * trying to upgrade the VM map lock, to


@@ -2316,7 +3030,7 @@ redo_lookup:
                                 */
                                vm_object_unlock(object);
 
                                 */
                                vm_object_unlock(object);
 

-                               if (vm_map_lock_read_to_write(target_map)) {
+                               if (vm_map_lock_read_to_write(target_map)) {

                                        /*
                                         * We couldn't upgrade our VM map lock
                                         * from "read" to "write" and we lost
                                        /*
                                         * We couldn't upgrade our VM map lock
                                         * from "read" to "write" and we lost


@@ -2325,60 +3039,72 @@ redo_lookup:
                                         */
                                        vm_object_deallocate(object); /* extra ref */
                                        target_map = original_map;
                                         */
                                        vm_object_deallocate(object); /* extra ref */
                                        target_map = original_map;

-                                       goto redo_lookup;
-                               }
+                                       goto redo_lookup;
+                               }
+#if 00

                                vm_object_lock(object);
                                vm_object_lock(object);

+#endif

 
 

-                               /* 
+                               /*

                                 * JMM - We need to avoid coming here when the object
                                 * is wired by anybody, not just the current map.  Why
                                 * couldn't we use the standard vm_object_copy_quickly()
                                 * approach here?
                                 */
                                 * JMM - We need to avoid coming here when the object
                                 * is wired by anybody, not just the current map.  Why
                                 * couldn't we use the standard vm_object_copy_quickly()
                                 * approach here?
                                 */

-                                
-                               /* create a shadow object */
-                               vm_object_shadow(&map_entry->object.vm_object,
-                                               &map_entry->offset, total_size);
-                               shadow_object = map_entry->object.vm_object;
+
+                               /* create a shadow object */
+                               VME_OBJECT_SHADOW(map_entry, total_size);
+                               shadow_object = VME_OBJECT(map_entry);
+#if 00

                                vm_object_unlock(object);
                                vm_object_unlock(object);

+#endif

 
                                prot = map_entry->protection & ~VM_PROT_WRITE;
 
                                prot = map_entry->protection & ~VM_PROT_WRITE;

-#ifdef STACK_ONLY_NX
-                               if (map_entry->alias != VM_MEMORY_STACK && prot)
-                                       prot |= VM_PROT_EXECUTE;
-#endif
+
+                               if (override_nx(target_map,
+                                   VME_ALIAS(map_entry))
+                                   && prot) {
+                                       prot |= VM_PROT_EXECUTE;
+                               }
+

                                vm_object_pmap_protect(
                                vm_object_pmap_protect(

-                                       object, map_entry->offset,
+                                       object, VME_OFFSET(map_entry),

                                        total_size,
                                        total_size,

-                                       ((map_entry->is_shared 
-                                               || target_map->mapped)
-                                                       ? PMAP_NULL :
-                                                       target_map->pmap),
+                                       ((map_entry->is_shared
+                                       || target_map->mapped_in_other_pmaps)
+                                       ? PMAP_NULL :
+                                       target_map->pmap),

                                        map_entry->vme_start,
                                        prot);
                                        map_entry->vme_start,
                                        prot);

-                               total_size -= (map_entry->vme_end 
-                                               - map_entry->vme_start);
+                               total_size -= (map_entry->vme_end
+                                   - map_entry->vme_start);

                                next_entry = map_entry->vme_next;
                                map_entry->needs_copy = FALSE;
                                next_entry = map_entry->vme_next;
                                map_entry->needs_copy = FALSE;

+
+                               vm_object_lock(shadow_object);

                                while (total_size) {
                                while (total_size) {

-                                  if(next_entry->object.vm_object == object) {
-                                       shadow_object->ref_count++; 
-                                       vm_object_res_reference(shadow_object);
-                                       next_entry->object.vm_object 
-                                                       = shadow_object;
-                                       vm_object_deallocate(object);
-                                       next_entry->offset 
-                                               = next_entry->vme_prev->offset +
-                                               (next_entry->vme_prev->vme_end 
-                                               - next_entry->vme_prev->vme_start);
+                                       assert((next_entry->wired_count == 0) ||
+                                           (map_entry->wired_count));
+
+                                       if (VME_OBJECT(next_entry) == object) {
+                                               vm_object_reference_locked(shadow_object);
+                                               VME_OBJECT_SET(next_entry,
+                                                   shadow_object);
+                                               vm_object_deallocate(object);
+                                               VME_OFFSET_SET(
+                                                       next_entry,
+                                                       (VME_OFFSET(next_entry->vme_prev) +
+                                                       (next_entry->vme_prev->vme_end
+                                                       - next_entry->vme_prev->vme_start)));
+                                               next_entry->use_pmap = TRUE;

                                                next_entry->needs_copy = FALSE;
                                        } else {
                                                panic("mach_make_memory_entry_64:"
                                                next_entry->needs_copy = FALSE;
                                        } else {
                                                panic("mach_make_memory_entry_64:"

-                                                 " map entries out of sync\n");
+                                                   " map entries out of sync\n");

                                        }
                                        }

-                                       total_size -= 
-                                               next_entry->vme_end 
-                                                       - next_entry->vme_start;
+                                       total_size -=
+                                           next_entry->vme_end
+                                           - next_entry->vme_start;

                                        next_entry = next_entry->vme_next;
                                }
 
                                        next_entry = next_entry->vme_next;
                                }
 


@@ -2390,14 +3116,12 @@ redo_lookup:
                                vm_object_deallocate(object); /* extra ref */
                                object = shadow_object;
 
                                vm_object_deallocate(object); /* extra ref */
                                object = shadow_object;
 

-                               obj_off = (local_offset - map_entry->vme_start)
-                                                        + map_entry->offset;
+                               obj_off = ((local_offset - map_entry->vme_start)
+                                   + VME_OFFSET(map_entry));

 
                                vm_map_lock_write_to_read(target_map);
 
                                vm_map_lock_write_to_read(target_map);

-                               vm_object_lock(object);
-
-                       }
-               }
+                       }
+               }

 
                /* note: in the future we can (if necessary) allow for  */
                /* memory object lists, this will better support        */
 
                /* note: in the future we can (if necessary) allow for  */
                /* memory object lists, this will better support        */


@@ -2410,21 +3134,31 @@ redo_lookup:
                /* against delayed copy, etc. is mostly defensive.      */
 
                wimg_mode = object->wimg_bits;
                /* against delayed copy, etc. is mostly defensive.      */
 
                wimg_mode = object->wimg_bits;

-               if(!(object->nophyscache)) {
-                       if(access == MAP_MEM_IO) {
-                               wimg_mode = VM_WIMG_IO;
-                       } else if (access == MAP_MEM_COPYBACK) {
-                               wimg_mode = VM_WIMG_USE_DEFAULT;
-                       } else if (access == MAP_MEM_WTHRU) {
-                               wimg_mode = VM_WIMG_WTHRU;
-                       } else if (access == MAP_MEM_WCOMB) {
-                               wimg_mode = VM_WIMG_WCOMB;
-                       }
+               if (!(object->nophyscache)) {
+                       vm_prot_to_wimg(access, &wimg_mode);

                }
 
                }
 

+#if VM_OBJECT_TRACKING_OP_TRUESHARE
+               if (!object->true_share &&
+                   vm_object_tracking_inited) {
+                       void *bt[VM_OBJECT_TRACKING_BTDEPTH];
+                       int num = 0;
+
+                       num = OSBacktrace(bt,
+                           VM_OBJECT_TRACKING_BTDEPTH);
+                       btlog_add_entry(vm_object_tracking_btlog,
+                           object,
+                           VM_OBJECT_TRACKING_OP_TRUESHARE,
+                           bt,
+                           num);
+               }
+#endif /* VM_OBJECT_TRACKING_OP_TRUESHARE */
+
+               vm_object_lock_assert_exclusive(object);

                object->true_share = TRUE;
                object->true_share = TRUE;

-               if (object->copy_strategy == MEMORY_OBJECT_COPY_SYMMETRIC)
+               if (object->copy_strategy == MEMORY_OBJECT_COPY_SYMMETRIC) {

                        object->copy_strategy = MEMORY_OBJECT_COPY_DELAY;
                        object->copy_strategy = MEMORY_OBJECT_COPY_DELAY;

+               }

 
                /*
                 * The memory entry now points to this VM object and we
 
                /*
                 * The memory entry now points to this VM object and we


@@ -2434,29 +3168,12 @@ redo_lookup:
                 */
 
                vm_map_unlock_read(target_map);
                 */
 
                vm_map_unlock_read(target_map);

-               if(real_map != target_map)
+               if (real_map != target_map) {

                        vm_map_unlock_read(real_map);
                        vm_map_unlock_read(real_map);

+               }

 
 

-               if(object->wimg_bits != wimg_mode) {
-                       vm_page_t p;
-
-                       vm_object_paging_wait(object, THREAD_UNINT);
-
-                       if ((wimg_mode == VM_WIMG_IO)
-                           || (wimg_mode == VM_WIMG_WCOMB))
-                               cache_attr = TRUE;
-                       else 
-                               cache_attr = FALSE;
-
-                       queue_iterate(&object->memq, 
-                                               p, vm_page_t, listq) {
-                               if (!p->fictitious) {
-                                       pmap_disconnect(p->phys_page);
-                                       if (cache_attr)
-                                               pmap_sync_page_attributes_phys(p->phys_page);
-                               }
-                       }
-                       object->wimg_bits = wimg_mode;
+               if (object->wimg_bits != wimg_mode) {
+                       vm_object_change_wimg_mode(object, wimg_mode);

                }
 
                /* the size of mapped entry that overlaps with our region */
                }
 
                /* the size of mapped entry that overlaps with our region */


@@ -2465,8 +3182,9 @@ redo_lookup:
                /*                   offset of our beg addr within entry  */
                /* it corresponds to this:                                */
 
                /*                   offset of our beg addr within entry  */
                /* it corresponds to this:                                */
 

-               if(map_size > mappable_size)
+               if (map_size > mappable_size) {

                        map_size = mappable_size;
                        map_size = mappable_size;

+               }

 
                if (permission & MAP_MEM_NAMED_REUSE) {
                        /*
 
                if (permission & MAP_MEM_NAMED_REUSE) {
                        /*


@@ -2478,10 +3196,13 @@ redo_lookup:
                            parent_entry->backing.object == object &&
                            parent_entry->internal == object->internal &&
                            parent_entry->is_sub_map == FALSE &&
                            parent_entry->backing.object == object &&
                            parent_entry->internal == object->internal &&
                            parent_entry->is_sub_map == FALSE &&

-                           parent_entry->is_pager == FALSE &&

                            parent_entry->offset == obj_off &&
                            parent_entry->protection == protections &&
                            parent_entry->offset == obj_off &&
                            parent_entry->protection == protections &&

-                           parent_entry->size == map_size) {
+                           parent_entry->size == map_size &&
+                           ((!(use_data_addr || use_4K_compat) &&
+                           (parent_entry->data_offset == 0)) ||
+                           ((use_data_addr || use_4K_compat) &&
+                           (parent_entry->data_offset == offset_in_page)))) {

                                /*
                                 * We have a match: re-use "parent_entry".
                                 */
                                /*
                                 * We have a match: re-use "parent_entry".
                                 */


@@ -2491,6 +3212,10 @@ redo_lookup:
                                /* parent_entry->ref_count++; XXX ? */
                                /* Get an extra send-right on handle */
                                ipc_port_copy_send(parent_handle);
                                /* parent_entry->ref_count++; XXX ? */
                                /* Get an extra send-right on handle */
                                ipc_port_copy_send(parent_handle);

+
+                               *size = CAST_DOWN(vm_size_t,
+                                   (parent_entry->size -
+                                   parent_entry->data_offset));

                                *object_handle = parent_handle;
                                return KERN_SUCCESS;
                        } else {
                                *object_handle = parent_handle;
                                return KERN_SUCCESS;
                        } else {


@@ -2512,31 +3237,73 @@ redo_lookup:
                user_entry->backing.object = object;
                user_entry->internal = object->internal;
                user_entry->is_sub_map = FALSE;
                user_entry->backing.object = object;
                user_entry->internal = object->internal;
                user_entry->is_sub_map = FALSE;

-               user_entry->is_pager = FALSE;

                user_entry->offset = obj_off;
                user_entry->offset = obj_off;

-               user_entry->protection = permission;
+               user_entry->data_offset = offset_in_page;
+               user_entry->protection = protections;
+               SET_MAP_MEM(GET_MAP_MEM(permission), user_entry->protection);

                user_entry->size = map_size;
                user_entry->size = map_size;

+#if VM_NAMED_ENTRY_LIST
+               user_entry->named_entry_alias = alias;
+#endif /* VM_NAMED_ENTRY_LIST */

 
                /* user_object pager and internal fields are not used */
                /* when the object field is filled in.                */
 
 
                /* user_object pager and internal fields are not used */
                /* when the object field is filled in.                */
 

-               *size = CAST_DOWN(vm_size_t, map_size);
+               *size = CAST_DOWN(vm_size_t, (user_entry->size -
+                   user_entry->data_offset));

                *object_handle = user_handle;
                return KERN_SUCCESS;
                *object_handle = user_handle;
                return KERN_SUCCESS;

-

        } else {
                /* The new object will be base on an existing named object */
        } else {
                /* The new object will be base on an existing named object */

-

                if (parent_entry == NULL) {
                        kr = KERN_INVALID_ARGUMENT;
                        goto make_mem_done;
                }
                if (parent_entry == NULL) {
                        kr = KERN_INVALID_ARGUMENT;
                        goto make_mem_done;
                }

-               if((offset + map_size) > parent_entry->size) {
-                       kr = KERN_INVALID_ARGUMENT;
-                       goto make_mem_done;
+
+               if (use_data_addr || use_4K_compat) {
+                       /*
+                        * submaps and pagers should only be accessible from within
+                        * the kernel, which shouldn't use the data address flag, so can fail here.
+                        */
+                       if (parent_entry->is_sub_map) {
+                               panic("Shouldn't be using data address with a parent entry that is a submap.");
+                       }
+                       /*
+                        * Account for offset to data in parent entry and
+                        * compute our own offset to data.
+                        */
+                       if ((offset + *size + parent_entry->data_offset) > parent_entry->size) {
+                               kr = KERN_INVALID_ARGUMENT;
+                               goto make_mem_done;
+                       }
+
+                       map_start = vm_map_trunc_page(offset + parent_entry->data_offset, PAGE_MASK);
+                       offset_in_page = (offset + parent_entry->data_offset) - map_start;
+                       if (use_4K_compat) {
+                               offset_in_page &= ~((signed)(0xFFF));
+                       }
+                       map_end = vm_map_round_page(offset + parent_entry->data_offset + *size, PAGE_MASK);
+                       map_size = map_end - map_start;
+               } else {
+                       map_end = vm_map_round_page(offset + *size, PAGE_MASK);
+                       map_size = map_end - map_start;
+                       offset_in_page = 0;
+
+                       if ((offset + map_size) > parent_entry->size) {
+                               kr = KERN_INVALID_ARGUMENT;
+                               goto make_mem_done;
+                       }

                }
 
                }
 

-               if((protections & parent_entry->protection) != protections) {
+               if (mask_protections) {
+                       /*
+                        * The caller asked us to use the "protections" as
+                        * a mask, so restrict "protections" to what this
+                        * mapping actually allows.
+                        */
+                       protections &= parent_entry->protection;
+               }
+               if ((protections & parent_entry->protection) != protections) {

                        kr = KERN_PROTECTION_FAILURE;
                        goto make_mem_done;
                }
                        kr = KERN_PROTECTION_FAILURE;
                        goto make_mem_done;
                }


@@ -2548,88 +3315,106 @@ redo_lookup:
                }
 
                user_entry->size = map_size;
                }
 
                user_entry->size = map_size;

-               user_entry->offset = parent_entry->offset + map_offset;
+               user_entry->offset = parent_entry->offset + map_start;
+               user_entry->data_offset = offset_in_page;

                user_entry->is_sub_map = parent_entry->is_sub_map;
                user_entry->is_sub_map = parent_entry->is_sub_map;

-               user_entry->is_pager = parent_entry->is_pager;
+               user_entry->is_copy = parent_entry->is_copy;

                user_entry->internal = parent_entry->internal;
                user_entry->protection = protections;
 
                user_entry->internal = parent_entry->internal;
                user_entry->protection = protections;
 

-               if(access != MAP_MEM_NOOP) {
-                  SET_MAP_MEM(access, user_entry->protection);
+               if (access != MAP_MEM_NOOP) {
+                       SET_MAP_MEM(access, user_entry->protection);

                }
 
                }
 

-               if(parent_entry->is_sub_map) {
-                  user_entry->backing.map = parent_entry->backing.map;
-                  vm_map_lock(user_entry->backing.map);
-                  user_entry->backing.map->ref_count++;
-                  vm_map_unlock(user_entry->backing.map);
-               }
-               else if (parent_entry->is_pager) {
-                  user_entry->backing.pager = parent_entry->backing.pager;
-                  /* JMM - don't we need a reference here? */
+               if (parent_entry->is_sub_map) {
+                       vm_map_t map = parent_entry->backing.map;
+                       user_entry->backing.map = map;
+                       lck_mtx_lock(&map->s_lock);
+                       os_ref_retain_locked(&map->map_refcnt);
+                       lck_mtx_unlock(&map->s_lock);

                } else {
                } else {

-                  object = parent_entry->backing.object;
-                  assert(object != VM_OBJECT_NULL);
-                  user_entry->backing.object = object;
-                  /* we now point to this object, hold on */
-                  vm_object_reference(object); 
-                  vm_object_lock(object);
-                  object->true_share = TRUE;
-                  if (object->copy_strategy == MEMORY_OBJECT_COPY_SYMMETRIC)
-                       object->copy_strategy = MEMORY_OBJECT_COPY_DELAY;
-                  vm_object_unlock(object);
+                       object = parent_entry->backing.object;
+                       assert(object != VM_OBJECT_NULL);
+                       user_entry->backing.object = object;
+                       /* we now point to this object, hold on */
+                       vm_object_lock(object);
+                       vm_object_reference_locked(object);
+#if VM_OBJECT_TRACKING_OP_TRUESHARE
+                       if (!object->true_share &&
+                           vm_object_tracking_inited) {
+                               void *bt[VM_OBJECT_TRACKING_BTDEPTH];
+                               int num = 0;
+
+                               num = OSBacktrace(bt,
+                                   VM_OBJECT_TRACKING_BTDEPTH);
+                               btlog_add_entry(vm_object_tracking_btlog,
+                                   object,
+                                   VM_OBJECT_TRACKING_OP_TRUESHARE,
+                                   bt,
+                                   num);
+                       }
+#endif /* VM_OBJECT_TRACKING_OP_TRUESHARE */
+
+                       object->true_share = TRUE;
+                       if (object->copy_strategy == MEMORY_OBJECT_COPY_SYMMETRIC) {
+                               object->copy_strategy = MEMORY_OBJECT_COPY_DELAY;
+                       }
+                       vm_object_unlock(object);

                }
                }

-               *size = CAST_DOWN(vm_size_t, map_size);
+               *size = CAST_DOWN(vm_size_t, (user_entry->size -
+                   user_entry->data_offset));

                *object_handle = user_handle;
                return KERN_SUCCESS;
        }
 
 make_mem_done:
        if (user_handle != IP_NULL) {
                *object_handle = user_handle;
                return KERN_SUCCESS;
        }
 
 make_mem_done:
        if (user_handle != IP_NULL) {

-               ipc_port_dealloc_kernel(user_handle);
-       }
-       if (user_entry != NULL) {
-               kfree(user_entry, sizeof *user_entry);
+               /*
+                * Releasing "user_handle" causes the kernel object
+                * associated with it ("user_entry" here) to also be
+                * released and freed.
+                */
+               mach_memory_entry_port_release(user_handle);

        }
        return kr;
 }
 
 kern_return_t
 _mach_make_memory_entry(
        }
        return kr;
 }
 
 kern_return_t
 _mach_make_memory_entry(

-       vm_map_t                target_map,
-       memory_object_size_t    *size,
-       memory_object_offset_t  offset,
-       vm_prot_t               permission,
-       ipc_port_t              *object_handle,
-       ipc_port_t              parent_entry)
-{
-       memory_object_offset_t  mo_size;
-       kern_return_t           kr;
-       
-       mo_size = (memory_object_offset_t)*size;
-       kr = mach_make_memory_entry_64(target_map, &mo_size, 
-                       (memory_object_offset_t)offset, permission, object_handle,
-                       parent_entry);
+       vm_map_t                target_map,
+       memory_object_size_t    *size,
+       memory_object_offset_t  offset,
+       vm_prot_t               permission,
+       ipc_port_t              *object_handle,
+       ipc_port_t              parent_entry)
+{
+       memory_object_size_t    mo_size;
+       kern_return_t           kr;
+
+       mo_size = (memory_object_size_t)*size;
+       kr = mach_make_memory_entry_64(target_map, &mo_size,
+           (memory_object_offset_t)offset, permission, object_handle,
+           parent_entry);

        *size = mo_size;
        return kr;
 }
 
 kern_return_t
 mach_make_memory_entry(
        *size = mo_size;
        return kr;
 }
 
 kern_return_t
 mach_make_memory_entry(

-       vm_map_t                target_map,
-       vm_size_t               *size,
-       vm_offset_t             offset,
-       vm_prot_t               permission,
-       ipc_port_t              *object_handle,
-       ipc_port_t              parent_entry)
-{      
-       memory_object_offset_t  mo_size;
-       kern_return_t           kr;
-       
-       mo_size = (memory_object_offset_t)*size;
-       kr = mach_make_memory_entry_64(target_map, &mo_size, 
-                       (memory_object_offset_t)offset, permission, object_handle,
-                       parent_entry);
+       vm_map_t                target_map,
+       vm_size_t               *size,
+       vm_offset_t             offset,
+       vm_prot_t               permission,
+       ipc_port_t              *object_handle,
+       ipc_port_t              parent_entry)
+{
+       memory_object_size_t    mo_size;
+       kern_return_t           kr;
+
+       mo_size = (memory_object_size_t)*size;
+       kr = mach_make_memory_entry_64(target_map, &mo_size,
+           (memory_object_offset_t)offset, permission, object_handle,
+           parent_entry);

        *size = CAST_DOWN(vm_size_t, mo_size);
        return kr;
 }
        *size = CAST_DOWN(vm_size_t, mo_size);
        return kr;
 }


@@ -2644,71 +3429,104 @@ mach_make_memory_entry(
  */
 kern_return_t
 task_wire(
  */
 kern_return_t
 task_wire(

-       vm_map_t        map,
-       boolean_t       must_wire)
+       vm_map_t        map,
+       boolean_t       must_wire)
+{
+       if (map == VM_MAP_NULL) {
+               return KERN_INVALID_ARGUMENT;
+       }
+
+       vm_map_lock(map);
+       map->wiring_required = (must_wire == TRUE);
+       vm_map_unlock(map);
+
+       return KERN_SUCCESS;
+}
+
+kern_return_t
+vm_map_exec_lockdown(
+       vm_map_t        map)

 {
 {

-       if (map == VM_MAP_NULL)
-               return(KERN_INVALID_ARGUMENT);
+       if (map == VM_MAP_NULL) {
+               return KERN_INVALID_ARGUMENT;
+       }
+
+       vm_map_lock(map);
+       map->map_disallow_new_exec = TRUE;
+       vm_map_unlock(map);
+
+       return KERN_SUCCESS;
+}

 
 

-       if (must_wire)
-               map->wiring_required = TRUE;
-       else
-               map->wiring_required = FALSE;
+#if VM_NAMED_ENTRY_LIST
+queue_head_t    vm_named_entry_list;
+int             vm_named_entry_count = 0;
+lck_mtx_t       vm_named_entry_list_lock_data;
+lck_mtx_ext_t   vm_named_entry_list_lock_data_ext;
+#endif /* VM_NAMED_ENTRY_LIST */

 
 

-       return(KERN_SUCCESS);
+void vm_named_entry_init(void);
+void
+vm_named_entry_init(void)
+{
+#if VM_NAMED_ENTRY_LIST
+       queue_init(&vm_named_entry_list);
+       vm_named_entry_count = 0;
+       lck_mtx_init_ext(&vm_named_entry_list_lock_data,
+           &vm_named_entry_list_lock_data_ext,
+           &vm_object_lck_grp,
+           &vm_object_lck_attr);
+#endif /* VM_NAMED_ENTRY_LIST */

 }
 
 __private_extern__ kern_return_t
 mach_memory_entry_allocate(
 }
 
 __private_extern__ kern_return_t
 mach_memory_entry_allocate(

-       vm_named_entry_t        *user_entry_p,
-       ipc_port_t              *user_handle_p)
+       vm_named_entry_t        *user_entry_p,
+       ipc_port_t              *user_handle_p)

 {
 {

-       vm_named_entry_t        user_entry;
-       ipc_port_t              user_handle;
-       ipc_port_t              previous;
+       vm_named_entry_t        user_entry;
+       ipc_port_t              user_handle;

 
        user_entry = (vm_named_entry_t) kalloc(sizeof *user_entry);
 
        user_entry = (vm_named_entry_t) kalloc(sizeof *user_entry);

-       if (user_entry == NULL)
-               return KERN_FAILURE;
-
-       named_entry_lock_init(user_entry);
-
-       user_handle = ipc_port_alloc_kernel();
-       if (user_handle == IP_NULL) {
-               kfree(user_entry, sizeof *user_entry);
+       if (user_entry == NULL) {

                return KERN_FAILURE;
        }
                return KERN_FAILURE;
        }

-       ip_lock(user_handle);
+       bzero(user_entry, sizeof(*user_entry));

 
 

-       /* make a sonce right */
-       user_handle->ip_sorights++;
-       ip_reference(user_handle);
-
-       user_handle->ip_destination = IP_NULL;
-       user_handle->ip_receiver_name = MACH_PORT_NULL;
-       user_handle->ip_receiver = ipc_space_kernel;
-
-       /* make a send right */
-        user_handle->ip_mscount++;
-        user_handle->ip_srights++;
-        ip_reference(user_handle);
-
-       ipc_port_nsrequest(user_handle, 1, user_handle, &previous);
-       /* nsrequest unlocks user_handle */
+       named_entry_lock_init(user_entry);

 
 

-       user_entry->backing.pager = NULL;
+       user_entry->backing.object = NULL;

        user_entry->is_sub_map = FALSE;
        user_entry->is_sub_map = FALSE;

-       user_entry->is_pager = FALSE;
-       user_entry->size = 0;
+       user_entry->is_copy = FALSE;

        user_entry->internal = FALSE;
        user_entry->internal = FALSE;

+       user_entry->size = 0;
+       user_entry->offset = 0;
+       user_entry->data_offset = 0;
+       user_entry->protection = VM_PROT_NONE;

        user_entry->ref_count = 1;
 
        user_entry->ref_count = 1;
 

-       ipc_kobject_set(user_handle, (ipc_kobject_t) user_entry,
-                       IKOT_NAMED_ENTRY);
+       user_handle = ipc_kobject_alloc_port((ipc_kobject_t)user_entry,
+           IKOT_NAMED_ENTRY,
+           IPC_KOBJECT_ALLOC_MAKE_SEND | IPC_KOBJECT_ALLOC_NSREQUEST);

 
        *user_entry_p = user_entry;
        *user_handle_p = user_handle;
 
 
        *user_entry_p = user_entry;
        *user_handle_p = user_handle;
 

+#if VM_NAMED_ENTRY_LIST
+       /* keep a loose (no reference) pointer to the Mach port, for debugging only */
+       user_entry->named_entry_port = user_handle;
+       /* backtrace at allocation time, for debugging only */
+       OSBacktrace(&user_entry->named_entry_bt[0],
+           NAMED_ENTRY_BT_DEPTH);
+
+       /* add this new named entry to the global list */
+       lck_mtx_lock_spin(&vm_named_entry_list_lock_data);
+       queue_enter(&vm_named_entry_list, user_entry,
+           vm_named_entry_t, named_entry_list);
+       vm_named_entry_count++;
+       lck_mtx_unlock(&vm_named_entry_list_lock_data);
+#endif /* VM_NAMED_ENTRY_LIST */
+

        return KERN_SUCCESS;
 }
 
        return KERN_SUCCESS;
 }
 


@@ -2717,79 +3535,123 @@ mach_memory_entry_allocate(
  *
  *     Create a named entry backed by the provided pager.
  *
  *
  *     Create a named entry backed by the provided pager.
  *

- *     JMM - we need to hold a reference on the pager -
- *     and release it when the named entry is destroyed.

  */
 kern_return_t
 mach_memory_object_memory_entry_64(
  */
 kern_return_t
 mach_memory_object_memory_entry_64(

-       host_t                  host,
-       boolean_t               internal,
-       vm_object_offset_t      size,
-       vm_prot_t               permission,
-       memory_object_t         pager,
-       ipc_port_t              *entry_handle)
+       host_t                  host,
+       boolean_t               internal,
+       vm_object_offset_t      size,
+       vm_prot_t               permission,
+       memory_object_t         pager,
+       ipc_port_t              *entry_handle)

 {
 {

-       unsigned int            access;
-       vm_named_entry_t        user_entry;
-       ipc_port_t              user_handle;
+       unsigned int            access;
+       vm_named_entry_t        user_entry;
+       ipc_port_t              user_handle;
+       vm_object_t             object;

 
 

-        if (host == HOST_NULL)
-                return(KERN_INVALID_HOST);
+       if (host == HOST_NULL) {
+               return KERN_INVALID_HOST;
+       }
+
+       if (pager == MEMORY_OBJECT_NULL && internal) {
+               object = vm_object_allocate(size);
+               if (object->copy_strategy == MEMORY_OBJECT_COPY_SYMMETRIC) {
+                       object->copy_strategy = MEMORY_OBJECT_COPY_DELAY;
+               }
+       } else {
+               object = memory_object_to_vm_object(pager);
+               if (object != VM_OBJECT_NULL) {
+                       vm_object_reference(object);
+               }
+       }
+       if (object == VM_OBJECT_NULL) {
+               return KERN_INVALID_ARGUMENT;
+       }

 
        if (mach_memory_entry_allocate(&user_entry, &user_handle)
            != KERN_SUCCESS) {
 
        if (mach_memory_entry_allocate(&user_entry, &user_handle)
            != KERN_SUCCESS) {

+               vm_object_deallocate(object);

                return KERN_FAILURE;
        }
 
                return KERN_FAILURE;
        }
 

-       user_entry->backing.pager = pager;

        user_entry->size = size;
        user_entry->offset = 0;
        user_entry->protection = permission & VM_PROT_ALL;
        access = GET_MAP_MEM(permission);
        SET_MAP_MEM(access, user_entry->protection);
        user_entry->size = size;
        user_entry->offset = 0;
        user_entry->protection = permission & VM_PROT_ALL;
        access = GET_MAP_MEM(permission);
        SET_MAP_MEM(access, user_entry->protection);

-       user_entry->internal = internal;

        user_entry->is_sub_map = FALSE;
        user_entry->is_sub_map = FALSE;

-       user_entry->is_pager = TRUE;

        assert(user_entry->ref_count == 1);
 
        assert(user_entry->ref_count == 1);
 

+       user_entry->backing.object = object;
+       user_entry->internal = object->internal;
+       assert(object->internal == internal);
+

        *entry_handle = user_handle;
        return KERN_SUCCESS;
        *entry_handle = user_handle;
        return KERN_SUCCESS;

-}      
+}

 
 kern_return_t
 mach_memory_object_memory_entry(
 
 kern_return_t
 mach_memory_object_memory_entry(

-       host_t          host,
-       boolean_t       internal,
-       vm_size_t       size,
-       vm_prot_t       permission,
-       memory_object_t pager,
-       ipc_port_t      *entry_handle)
+       host_t          host,
+       boolean_t       internal,
+       vm_size_t       size,
+       vm_prot_t       permission,
+       memory_object_t pager,
+       ipc_port_t      *entry_handle)

 {
 {

-       return mach_memory_object_memory_entry_64( host, internal, 
-               (vm_object_offset_t)size, permission, pager, entry_handle);
+       return mach_memory_object_memory_entry_64( host, internal,
+                  (vm_object_offset_t)size, permission, pager, entry_handle);

 }
 
 
 kern_return_t
 mach_memory_entry_purgable_control(
 }
 
 
 kern_return_t
 mach_memory_entry_purgable_control(

-       ipc_port_t      entry_port,
-       vm_purgable_t   control,
-       int             *state)
+       ipc_port_t      entry_port,
+       vm_purgable_t   control,
+       int             *state)

 {
 {

-       kern_return_t           kr;
-       vm_named_entry_t        mem_entry;
-       vm_object_t             object;
+       if (control == VM_PURGABLE_SET_STATE_FROM_KERNEL) {
+               /* not allowed from user-space */
+               return KERN_INVALID_ARGUMENT;
+       }
+
+       return memory_entry_purgeable_control_internal(entry_port, control, state);
+}

 
 

-       if (entry_port == IP_NULL ||
+kern_return_t
+memory_entry_purgeable_control_internal(
+       ipc_port_t      entry_port,
+       vm_purgable_t   control,
+       int             *state)
+{
+       kern_return_t           kr;
+       vm_named_entry_t        mem_entry;
+       vm_object_t             object;
+
+       if (!IP_VALID(entry_port) ||

            ip_kotype(entry_port) != IKOT_NAMED_ENTRY) {
                return KERN_INVALID_ARGUMENT;
        }
            ip_kotype(entry_port) != IKOT_NAMED_ENTRY) {
                return KERN_INVALID_ARGUMENT;
        }

+       if (control != VM_PURGABLE_SET_STATE &&
+           control != VM_PURGABLE_GET_STATE &&
+           control != VM_PURGABLE_SET_STATE_FROM_KERNEL) {
+               return KERN_INVALID_ARGUMENT;
+       }
+
+       if ((control == VM_PURGABLE_SET_STATE ||
+           control == VM_PURGABLE_SET_STATE_FROM_KERNEL) &&
+           (((*state & ~(VM_PURGABLE_ALL_MASKS)) != 0) ||
+           ((*state & VM_PURGABLE_STATE_MASK) > VM_PURGABLE_STATE_MASK))) {
+               return KERN_INVALID_ARGUMENT;
+       }

 
 

-       mem_entry = (vm_named_entry_t) entry_port->ip_kobject;
+       mem_entry = (vm_named_entry_t) ip_get_kobject(entry_port);

 
        named_entry_lock(mem_entry);
 
 
        named_entry_lock(mem_entry);
 

-       if (mem_entry->is_sub_map || mem_entry->is_pager) {
+       if (mem_entry->is_sub_map ||
+           mem_entry->is_copy) {

                named_entry_unlock(mem_entry);
                return KERN_INVALID_ARGUMENT;
        }
                named_entry_unlock(mem_entry);
                return KERN_INVALID_ARGUMENT;
        }


@@ -2803,7 +3665,7 @@ mach_memory_entry_purgable_control(
        vm_object_lock(object);
 
        /* check that named entry covers entire object ? */
        vm_object_lock(object);
 
        /* check that named entry covers entire object ? */

-       if (mem_entry->offset != 0 || object->size != mem_entry->size) {
+       if (mem_entry->offset != 0 || object->vo_size != mem_entry->size) {

                vm_object_unlock(object);
                named_entry_unlock(mem_entry);
                return KERN_INVALID_ARGUMENT;
                vm_object_unlock(object);
                named_entry_unlock(mem_entry);
                return KERN_INVALID_ARGUMENT;


@@ -2818,6 +3680,198 @@ mach_memory_entry_purgable_control(
        return kr;
 }
 
        return kr;
 }
 

+kern_return_t
+mach_memory_entry_access_tracking(
+       ipc_port_t      entry_port,
+       int             *access_tracking,
+       uint32_t        *access_tracking_reads,
+       uint32_t        *access_tracking_writes)
+{
+       return memory_entry_access_tracking_internal(entry_port,
+                  access_tracking,
+                  access_tracking_reads,
+                  access_tracking_writes);
+}
+
+kern_return_t
+memory_entry_access_tracking_internal(
+       ipc_port_t      entry_port,
+       int             *access_tracking,
+       uint32_t        *access_tracking_reads,
+       uint32_t        *access_tracking_writes)
+{
+       vm_named_entry_t        mem_entry;
+       vm_object_t             object;
+       kern_return_t           kr;
+
+       if (!IP_VALID(entry_port) ||
+           ip_kotype(entry_port) != IKOT_NAMED_ENTRY) {
+               return KERN_INVALID_ARGUMENT;
+       }
+
+       mem_entry = (vm_named_entry_t) ip_get_kobject(entry_port);
+
+       named_entry_lock(mem_entry);
+
+       if (mem_entry->is_sub_map ||
+           mem_entry->is_copy) {
+               named_entry_unlock(mem_entry);
+               return KERN_INVALID_ARGUMENT;
+       }
+
+       object = mem_entry->backing.object;
+       if (object == VM_OBJECT_NULL) {
+               named_entry_unlock(mem_entry);
+               return KERN_INVALID_ARGUMENT;
+       }
+
+#if VM_OBJECT_ACCESS_TRACKING
+       vm_object_access_tracking(object,
+           access_tracking,
+           access_tracking_reads,
+           access_tracking_writes);
+       kr = KERN_SUCCESS;
+#else /* VM_OBJECT_ACCESS_TRACKING */
+       (void) access_tracking;
+       (void) access_tracking_reads;
+       (void) access_tracking_writes;
+       kr = KERN_NOT_SUPPORTED;
+#endif /* VM_OBJECT_ACCESS_TRACKING */
+
+       named_entry_unlock(mem_entry);
+
+       return kr;
+}
+
+kern_return_t
+mach_memory_entry_ownership(
+       ipc_port_t      entry_port,
+       task_t          owner,
+       int             ledger_tag,
+       int             ledger_flags)
+{
+       task_t                  cur_task;
+       kern_return_t           kr;
+       vm_named_entry_t        mem_entry;
+       vm_object_t             object;
+
+       cur_task = current_task();
+       if (cur_task != kernel_task &&
+           (owner != cur_task ||
+           (ledger_flags & VM_LEDGER_FLAG_NO_FOOTPRINT) ||
+           ledger_tag == VM_LEDGER_TAG_NETWORK)) {
+               /*
+                * An entitlement is required to:
+                * + tranfer memory ownership to someone else,
+                * + request that the memory not count against the footprint,
+                * + tag as "network" (since that implies "no footprint")
+                */
+               if (!cur_task->task_can_transfer_memory_ownership &&
+                   IOTaskHasEntitlement(cur_task,
+                   "com.apple.private.memory.ownership_transfer")) {
+                       cur_task->task_can_transfer_memory_ownership = TRUE;
+               }
+               if (!cur_task->task_can_transfer_memory_ownership) {
+                       return KERN_NO_ACCESS;
+               }
+       }
+
+       if (ledger_flags & ~VM_LEDGER_FLAGS) {
+               return KERN_INVALID_ARGUMENT;
+       }
+       if (ledger_tag <= 0 ||
+           ledger_tag > VM_LEDGER_TAG_MAX) {
+               return KERN_INVALID_ARGUMENT;
+       }
+
+       if (!IP_VALID(entry_port) ||
+           ip_kotype(entry_port) != IKOT_NAMED_ENTRY) {
+               return KERN_INVALID_ARGUMENT;
+       }
+       mem_entry = (vm_named_entry_t) ip_get_kobject(entry_port);
+
+       named_entry_lock(mem_entry);
+
+       if (mem_entry->is_sub_map ||
+           mem_entry->is_copy) {
+               named_entry_unlock(mem_entry);
+               return KERN_INVALID_ARGUMENT;
+       }
+
+       object = mem_entry->backing.object;
+       if (object == VM_OBJECT_NULL) {
+               named_entry_unlock(mem_entry);
+               return KERN_INVALID_ARGUMENT;
+       }
+
+       vm_object_lock(object);
+
+       /* check that named entry covers entire object ? */
+       if (mem_entry->offset != 0 || object->vo_size != mem_entry->size) {
+               vm_object_unlock(object);
+               named_entry_unlock(mem_entry);
+               return KERN_INVALID_ARGUMENT;
+       }
+
+       named_entry_unlock(mem_entry);
+
+       kr = vm_object_ownership_change(object,
+           ledger_tag,
+           owner,
+           ledger_flags,
+           FALSE);                             /* task_objq_locked */
+       vm_object_unlock(object);
+
+       return kr;
+}
+
+kern_return_t
+mach_memory_entry_get_page_counts(
+       ipc_port_t      entry_port,
+       unsigned int    *resident_page_count,
+       unsigned int    *dirty_page_count)
+{
+       kern_return_t           kr;
+       vm_named_entry_t        mem_entry;
+       vm_object_t             object;
+       vm_object_offset_t      offset;
+       vm_object_size_t        size;
+
+       if (!IP_VALID(entry_port) ||
+           ip_kotype(entry_port) != IKOT_NAMED_ENTRY) {
+               return KERN_INVALID_ARGUMENT;
+       }
+
+       mem_entry = (vm_named_entry_t) ip_get_kobject(entry_port);
+
+       named_entry_lock(mem_entry);
+
+       if (mem_entry->is_sub_map ||
+           mem_entry->is_copy) {
+               named_entry_unlock(mem_entry);
+               return KERN_INVALID_ARGUMENT;
+       }
+
+       object = mem_entry->backing.object;
+       if (object == VM_OBJECT_NULL) {
+               named_entry_unlock(mem_entry);
+               return KERN_INVALID_ARGUMENT;
+       }
+
+       vm_object_lock(object);
+
+       offset = mem_entry->offset;
+       size = mem_entry->size;
+
+       named_entry_unlock(mem_entry);
+
+       kr = vm_object_get_page_counts(object, offset, size, resident_page_count, dirty_page_count);
+
+       vm_object_unlock(object);
+
+       return kr;
+}
+

 /*
  * mach_memory_entry_port_release:
  *
 /*
  * mach_memory_entry_port_release:
  *


@@ -2827,7 +3881,7 @@ mach_memory_entry_purgable_control(
  */
 void
 mach_memory_entry_port_release(
  */
 void
 mach_memory_entry_port_release(

-       ipc_port_t      port)
+       ipc_port_t      port)

 {
        assert(ip_kotype(port) == IKOT_NAMED_ENTRY);
        ipc_port_release_send(port);
 {
        assert(ip_kotype(port) == IKOT_NAMED_ENTRY);
        ipc_port_release_send(port);


@@ -2847,29 +3901,43 @@ mach_memory_entry_port_release(
  */
 void
 mach_destroy_memory_entry(
  */
 void
 mach_destroy_memory_entry(

-       ipc_port_t      port)
+       ipc_port_t      port)

 {
 {

-       vm_named_entry_t        named_entry;
+       vm_named_entry_t        named_entry;

 #if MACH_ASSERT
        assert(ip_kotype(port) == IKOT_NAMED_ENTRY);
 #endif /* MACH_ASSERT */
 #if MACH_ASSERT
        assert(ip_kotype(port) == IKOT_NAMED_ENTRY);
 #endif /* MACH_ASSERT */

-       named_entry = (vm_named_entry_t)port->ip_kobject;
-       mutex_lock(&(named_entry)->Lock);
+       named_entry = (vm_named_entry_t) ip_get_kobject(port);
+
+       named_entry_lock(named_entry);

        named_entry->ref_count -= 1;
        named_entry->ref_count -= 1;

-       if(named_entry->ref_count == 0) {
+
+       if (named_entry->ref_count == 0) {

                if (named_entry->is_sub_map) {
                        vm_map_deallocate(named_entry->backing.map);
                if (named_entry->is_sub_map) {
                        vm_map_deallocate(named_entry->backing.map);

-               } else if (!named_entry->is_pager) { 
-                       /* release the memory object we've been pointing to */
+               } else if (named_entry->is_copy) {
+                       vm_map_copy_discard(named_entry->backing.copy);
+               } else {
+                       /* release the VM object we've been pointing to */

                        vm_object_deallocate(named_entry->backing.object);
                        vm_object_deallocate(named_entry->backing.object);

-               } /* else JMM - need to drop reference on pager in that case */
-
-               mutex_unlock(&(named_entry)->Lock);
+               }

 
 

-               kfree((void *) port->ip_kobject,
-                     sizeof (struct vm_named_entry));
-       } else
-               mutex_unlock(&(named_entry)->Lock);
+               named_entry_unlock(named_entry);
+               named_entry_lock_destroy(named_entry);
+
+#if VM_NAMED_ENTRY_LIST
+               lck_mtx_lock_spin(&vm_named_entry_list_lock_data);
+               queue_remove(&vm_named_entry_list, named_entry,
+                   vm_named_entry_t, named_entry_list);
+               assert(vm_named_entry_count > 0);
+               vm_named_entry_count--;
+               lck_mtx_unlock(&vm_named_entry_list_lock_data);
+#endif /* VM_NAMED_ENTRY_LIST */
+
+               kfree(named_entry, sizeof(struct vm_named_entry));
+       } else {
+               named_entry_unlock(named_entry);
+       }

 }
 
 /* Allow manipulation of individual page state.  This is actually part of */
 }
 
 /* Allow manipulation of individual page state.  This is actually part of */


@@ -2877,26 +3945,27 @@ mach_destroy_memory_entry(
 
 kern_return_t
 mach_memory_entry_page_op(
 
 kern_return_t
 mach_memory_entry_page_op(

-       ipc_port_t              entry_port,
-       vm_object_offset_t      offset,
-       int                     ops,
-       ppnum_t                 *phys_entry,
-       int                     *flags)
+       ipc_port_t              entry_port,
+       vm_object_offset_t      offset,
+       int                     ops,
+       ppnum_t                 *phys_entry,
+       int                     *flags)

 {
 {

-       vm_named_entry_t        mem_entry;
-       vm_object_t             object;
-       kern_return_t           kr;
+       vm_named_entry_t        mem_entry;
+       vm_object_t             object;
+       kern_return_t           kr;

 
 

-       if (entry_port == IP_NULL ||
+       if (!IP_VALID(entry_port) ||

            ip_kotype(entry_port) != IKOT_NAMED_ENTRY) {
                return KERN_INVALID_ARGUMENT;
        }
 
            ip_kotype(entry_port) != IKOT_NAMED_ENTRY) {
                return KERN_INVALID_ARGUMENT;
        }
 

-       mem_entry = (vm_named_entry_t) entry_port->ip_kobject;
+       mem_entry = (vm_named_entry_t) ip_get_kobject(entry_port);

 
        named_entry_lock(mem_entry);
 
 
        named_entry_lock(mem_entry);
 

-       if (mem_entry->is_sub_map || mem_entry->is_pager) {
+       if (mem_entry->is_sub_map ||
+           mem_entry->is_copy) {

                named_entry_unlock(mem_entry);
                return KERN_INVALID_ARGUMENT;
        }
                named_entry_unlock(mem_entry);
                return KERN_INVALID_ARGUMENT;
        }


@@ -2912,43 +3981,44 @@ mach_memory_entry_page_op(
 
        kr = vm_object_page_op(object, offset, ops, phys_entry, flags);
 
 
        kr = vm_object_page_op(object, offset, ops, phys_entry, flags);
 

-       vm_object_deallocate(object);   
+       vm_object_deallocate(object);

 
        return kr;
 }
 
 /*
 
        return kr;
 }
 
 /*

- * mach_memory_entry_range_op offers performance enhancement over 
- * mach_memory_entry_page_op for page_op functions which do not require page 
- * level state to be returned from the call.  Page_op was created to provide 
- * a low-cost alternative to page manipulation via UPLs when only a single 
- * page was involved.  The range_op call establishes the ability in the _op 
+ * mach_memory_entry_range_op offers performance enhancement over
+ * mach_memory_entry_page_op for page_op functions which do not require page
+ * level state to be returned from the call.  Page_op was created to provide
+ * a low-cost alternative to page manipulation via UPLs when only a single
+ * page was involved.  The range_op call establishes the ability in the _op

  * family of functions to work on multiple pages where the lack of page level
  * state handling allows the caller to avoid the overhead of the upl structures.
  */
 
 kern_return_t
 mach_memory_entry_range_op(
  * family of functions to work on multiple pages where the lack of page level
  * state handling allows the caller to avoid the overhead of the upl structures.
  */
 
 kern_return_t
 mach_memory_entry_range_op(

-       ipc_port_t              entry_port,
-       vm_object_offset_t      offset_beg,
-       vm_object_offset_t      offset_end,
+       ipc_port_t              entry_port,
+       vm_object_offset_t      offset_beg,
+       vm_object_offset_t      offset_end,

        int                     ops,
        int                     *range)
 {
        int                     ops,
        int                     *range)
 {

-       vm_named_entry_t        mem_entry;
-       vm_object_t             object;
-       kern_return_t           kr;
+       vm_named_entry_t        mem_entry;
+       vm_object_t             object;
+       kern_return_t           kr;

 
 

-       if (entry_port == IP_NULL ||
+       if (!IP_VALID(entry_port) ||

            ip_kotype(entry_port) != IKOT_NAMED_ENTRY) {
                return KERN_INVALID_ARGUMENT;
        }
 
            ip_kotype(entry_port) != IKOT_NAMED_ENTRY) {
                return KERN_INVALID_ARGUMENT;
        }
 

-       mem_entry = (vm_named_entry_t) entry_port->ip_kobject;
+       mem_entry = (vm_named_entry_t) ip_get_kobject(entry_port);

 
        named_entry_lock(mem_entry);
 
 
        named_entry_lock(mem_entry);
 

-       if (mem_entry->is_sub_map || mem_entry->is_pager) {
+       if (mem_entry->is_sub_map ||
+           mem_entry->is_copy) {

                named_entry_unlock(mem_entry);
                return KERN_INVALID_ARGUMENT;
        }
                named_entry_unlock(mem_entry);
                return KERN_INVALID_ARGUMENT;
        }


@@ -2963,45 +4033,16 @@ mach_memory_entry_range_op(
        named_entry_unlock(mem_entry);
 
        kr = vm_object_range_op(object,
        named_entry_unlock(mem_entry);
 
        kr = vm_object_range_op(object,

-                               offset_beg,
-                               offset_end,
-                               ops,
-                               range);
+           offset_beg,
+           offset_end,
+           ops,
+           (uint32_t *) range);

 
        vm_object_deallocate(object);
 
        return kr;
 }
 
 
        vm_object_deallocate(object);
 
        return kr;
 }
 

-
-kern_return_t
-set_dp_control_port(
-       host_priv_t     host_priv,
-       ipc_port_t      control_port)   
-{
-        if (host_priv == HOST_PRIV_NULL)
-                return (KERN_INVALID_HOST);
-
-       if (IP_VALID(dynamic_pager_control_port))
-               ipc_port_release_send(dynamic_pager_control_port);
-
-       dynamic_pager_control_port = control_port;
-       return KERN_SUCCESS;
-}
-
-kern_return_t
-get_dp_control_port(
-       host_priv_t     host_priv,
-       ipc_port_t      *control_port)  
-{
-        if (host_priv == HOST_PRIV_NULL)
-                return (KERN_INVALID_HOST);
-
-       *control_port = ipc_port_copy_send(dynamic_pager_control_port);
-       return KERN_SUCCESS;
-       
-}
-

 /* ******* Temporary Internal calls to UPL for BSD ***** */
 
 extern int kernel_upl_map(
 /* ******* Temporary Internal calls to UPL for BSD ***** */
 
 extern int kernel_upl_map(


@@ -3016,15 +4057,15 @@ extern int kernel_upl_unmap(
 extern int kernel_upl_commit(
        upl_t                   upl,
        upl_page_info_t         *pl,
 extern int kernel_upl_commit(
        upl_t                   upl,
        upl_page_info_t         *pl,

-       mach_msg_type_number_t   count);
+       mach_msg_type_number_t   count);

 
 extern int kernel_upl_commit_range(
        upl_t                   upl,
        upl_offset_t             offset,
 
 extern int kernel_upl_commit_range(
        upl_t                   upl,
        upl_offset_t             offset,

-       upl_size_t              size,
-       int                     flags,
-       upl_page_info_array_t   pl,
-       mach_msg_type_number_t  count);
+       upl_size_t              size,
+       int                     flags,
+       upl_page_info_array_t   pl,
+       mach_msg_type_number_t  count);

 
 extern int kernel_upl_abort(
        upl_t                   upl,
 
 extern int kernel_upl_abort(
        upl_t                   upl,


@@ -3039,9 +4080,9 @@ extern int kernel_upl_abort_range(
 
 kern_return_t
 kernel_upl_map(
 
 kern_return_t
 kernel_upl_map(

-       vm_map_t        map,
-       upl_t           upl,
-       vm_offset_t     *dst_addr)
+       vm_map_t        map,
+       upl_t           upl,
+       vm_offset_t     *dst_addr)

 {
        return vm_upl_map(map, upl, dst_addr);
 }
 {
        return vm_upl_map(map, upl, dst_addr);
 }


@@ -3049,8 +4090,8 @@ kernel_upl_map(
 
 kern_return_t
 kernel_upl_unmap(
 
 kern_return_t
 kernel_upl_unmap(

-       vm_map_t        map,
-       upl_t           upl)
+       vm_map_t        map,
+       upl_t           upl)

 {
        return vm_upl_unmap(map, upl);
 }
 {
        return vm_upl_unmap(map, upl);
 }


@@ -3061,7 +4102,7 @@ kernel_upl_commit(
        upl_page_info_t        *pl,
        mach_msg_type_number_t  count)
 {
        upl_page_info_t        *pl,
        mach_msg_type_number_t  count)
 {

-       kern_return_t   kr;
+       kern_return_t   kr;

 
        kr = upl_commit(upl, pl, count);
        upl_deallocate(upl);
 
        kr = upl_commit(upl, pl, count);
        upl_deallocate(upl);


@@ -3071,54 +4112,62 @@ kernel_upl_commit(
 
 kern_return_t
 kernel_upl_commit_range(
 
 kern_return_t
 kernel_upl_commit_range(

-       upl_t                   upl,
-       upl_offset_t            offset,
-       upl_size_t              size,
-       int                     flags,
+       upl_t                   upl,
+       upl_offset_t            offset,
+       upl_size_t              size,
+       int                     flags,

        upl_page_info_array_t   pl,
        mach_msg_type_number_t  count)
 {
        upl_page_info_array_t   pl,
        mach_msg_type_number_t  count)
 {

-       boolean_t               finished = FALSE;
-       kern_return_t           kr;
+       boolean_t               finished = FALSE;
+       kern_return_t           kr;

 
 

-       if (flags & UPL_COMMIT_FREE_ON_EMPTY)
+       if (flags & UPL_COMMIT_FREE_ON_EMPTY) {

                flags |= UPL_COMMIT_NOTIFY_EMPTY;
                flags |= UPL_COMMIT_NOTIFY_EMPTY;

+       }
+
+       if (flags & UPL_COMMIT_KERNEL_ONLY_FLAGS) {
+               return KERN_INVALID_ARGUMENT;
+       }

 
        kr = upl_commit_range(upl, offset, size, flags, pl, count, &finished);
 
 
        kr = upl_commit_range(upl, offset, size, flags, pl, count, &finished);
 

-       if ((flags & UPL_COMMIT_NOTIFY_EMPTY) && finished)
+       if ((flags & UPL_COMMIT_NOTIFY_EMPTY) && finished) {

                upl_deallocate(upl);
                upl_deallocate(upl);

+       }

 
        return kr;
 }
 
        return kr;
 }

-       
+

 kern_return_t
 kernel_upl_abort_range(
 kern_return_t
 kernel_upl_abort_range(

-       upl_t                   upl,
-       upl_offset_t            offset,
-       upl_size_t              size,
-       int                     abort_flags)
+       upl_t                   upl,
+       upl_offset_t            offset,
+       upl_size_t              size,
+       int                     abort_flags)

 {
 {

-       kern_return_t           kr;
-       boolean_t               finished = FALSE;
+       kern_return_t           kr;
+       boolean_t               finished = FALSE;

 
 

-       if (abort_flags & UPL_COMMIT_FREE_ON_EMPTY)
+       if (abort_flags & UPL_COMMIT_FREE_ON_EMPTY) {

                abort_flags |= UPL_COMMIT_NOTIFY_EMPTY;
                abort_flags |= UPL_COMMIT_NOTIFY_EMPTY;

+       }

 
        kr = upl_abort_range(upl, offset, size, abort_flags, &finished);
 
 
        kr = upl_abort_range(upl, offset, size, abort_flags, &finished);
 

-       if ((abort_flags & UPL_COMMIT_FREE_ON_EMPTY) && finished)
+       if ((abort_flags & UPL_COMMIT_FREE_ON_EMPTY) && finished) {

                upl_deallocate(upl);
                upl_deallocate(upl);

+       }

 
        return kr;
 }
 
 kern_return_t
 kernel_upl_abort(
 
        return kr;
 }
 
 kern_return_t
 kernel_upl_abort(

-       upl_t                   upl,
-       int                     abort_type)
+       upl_t                   upl,
+       int                     abort_type)

 {
 {

-       kern_return_t   kr;
+       kern_return_t   kr;

 
        kr = upl_abort(upl, abort_type);
        upl_deallocate(upl);
 
        kr = upl_abort(upl, abort_type);
        upl_deallocate(upl);


@@ -3133,15 +4182,15 @@ kernel_upl_abort(
 
 kern_return_t
 vm_region_object_create(
 
 kern_return_t
 vm_region_object_create(

-       __unused vm_map_t       target_map,
-       vm_size_t               size,
-       ipc_port_t              *object_handle)
+       __unused vm_map_t       target_map,
+       vm_size_t               size,
+       ipc_port_t              *object_handle)

 {
 {

-       vm_named_entry_t        user_entry;
-       ipc_port_t              user_handle;
+       vm_named_entry_t        user_entry;
+       ipc_port_t              user_handle;
+
+       vm_map_t        new_map;

 
 

-       vm_map_t        new_map;
-       

        if (mach_memory_entry_allocate(&user_entry, &user_handle)
            != KERN_SUCCESS) {
                return KERN_FAILURE;
        if (mach_memory_entry_allocate(&user_entry, &user_handle)
            != KERN_SUCCESS) {
                return KERN_FAILURE;


@@ -3150,7 +4199,10 @@ vm_region_object_create(
        /* Create a named object based on a submap of specified size */
 
        new_map = vm_map_create(PMAP_NULL, VM_MAP_MIN_ADDRESS,
        /* Create a named object based on a submap of specified size */
 
        new_map = vm_map_create(PMAP_NULL, VM_MAP_MIN_ADDRESS,

-                               vm_map_round_page(size), TRUE);
+           vm_map_round_page(size,
+           VM_MAP_PAGE_MASK(target_map)),
+           TRUE);
+       vm_map_set_page_shift(new_map, VM_MAP_PAGE_SHIFT(target_map));

 
        user_entry->backing.map = new_map;
        user_entry->internal = TRUE;
 
        user_entry->backing.map = new_map;
        user_entry->internal = TRUE;


@@ -3162,73 +4214,73 @@ vm_region_object_create(
 
        *object_handle = user_handle;
        return KERN_SUCCESS;
 
        *object_handle = user_handle;
        return KERN_SUCCESS;

-

 }
 
 }
 

-ppnum_t vm_map_get_phys_page(          /* forward */
-       vm_map_t        map,
-       vm_offset_t     offset);
+ppnum_t vm_map_get_phys_page(           /* forward */
+       vm_map_t        map,
+       vm_offset_t     offset);

 
 ppnum_t
 vm_map_get_phys_page(
 
 ppnum_t
 vm_map_get_phys_page(

-       vm_map_t                map,
-       vm_offset_t             addr)
+       vm_map_t                map,
+       vm_offset_t             addr)

 {
 {

-       vm_object_offset_t      offset;
-       vm_object_t             object;
-       vm_map_offset_t         map_offset;
-       vm_map_entry_t          entry;
-       ppnum_t                 phys_page = 0;
+       vm_object_offset_t      offset;
+       vm_object_t             object;
+       vm_map_offset_t         map_offset;
+       vm_map_entry_t          entry;
+       ppnum_t                 phys_page = 0;

 
 

-       map_offset = vm_map_trunc_page(addr);
+       map_offset = vm_map_trunc_page(addr, PAGE_MASK);

 
        vm_map_lock(map);
        while (vm_map_lookup_entry(map, map_offset, &entry)) {
 
        vm_map_lock(map);
        while (vm_map_lookup_entry(map, map_offset, &entry)) {

-
-               if (entry->object.vm_object == VM_OBJECT_NULL) {
+               if (VME_OBJECT(entry) == VM_OBJECT_NULL) {

                        vm_map_unlock(map);
                        return (ppnum_t) 0;
                }
                if (entry->is_sub_map) {
                        vm_map_unlock(map);
                        return (ppnum_t) 0;
                }
                if (entry->is_sub_map) {

-                       vm_map_t        old_map;
-                       vm_map_lock(entry->object.sub_map);
+                       vm_map_t        old_map;
+                       vm_map_lock(VME_SUBMAP(entry));

                        old_map = map;
                        old_map = map;

-                       map = entry->object.sub_map;
-                       map_offset = entry->offset + (map_offset - entry->vme_start);
+                       map = VME_SUBMAP(entry);
+                       map_offset = (VME_OFFSET(entry) +
+                           (map_offset - entry->vme_start));

                        vm_map_unlock(old_map);
                        continue;
                }
                        vm_map_unlock(old_map);
                        continue;
                }

-               if (entry->object.vm_object->phys_contiguous) {
+               if (VME_OBJECT(entry)->phys_contiguous) {

                        /* These are  not standard pageable memory mappings */
                        /* If they are not present in the object they will  */
                        /* have to be picked up from the pager through the  */
                        /* fault mechanism.  */
                        /* These are  not standard pageable memory mappings */
                        /* If they are not present in the object they will  */
                        /* have to be picked up from the pager through the  */
                        /* fault mechanism.  */

-                       if(entry->object.vm_object->shadow_offset == 0) {
+                       if (VME_OBJECT(entry)->vo_shadow_offset == 0) {

                                /* need to call vm_fault */
                                vm_map_unlock(map);
                                /* need to call vm_fault */
                                vm_map_unlock(map);

-                               vm_fault(map, map_offset, VM_PROT_NONE, 
-                                       FALSE, THREAD_UNINT, NULL, 0);
+                               vm_fault(map, map_offset, VM_PROT_NONE,
+                                   FALSE /* change_wiring */, VM_KERN_MEMORY_NONE,
+                                   THREAD_UNINT, NULL, 0);

                                vm_map_lock(map);
                                continue;
                        }
                                vm_map_lock(map);
                                continue;
                        }

-                       offset = entry->offset + (map_offset - entry->vme_start);
+                       offset = (VME_OFFSET(entry) +
+                           (map_offset - entry->vme_start));

                        phys_page = (ppnum_t)
                        phys_page = (ppnum_t)

-                               ((entry->object.vm_object->shadow_offset 
-                                                       + offset) >> 12);
+                           ((VME_OBJECT(entry)->vo_shadow_offset
+                           + offset) >> PAGE_SHIFT);

                        break;
                        break;

-                       

                }
                }

-               offset = entry->offset + (map_offset - entry->vme_start);
-               object = entry->object.vm_object;
+               offset = (VME_OFFSET(entry) + (map_offset - entry->vme_start));
+               object = VME_OBJECT(entry);

                vm_object_lock(object);
                while (TRUE) {
                vm_object_lock(object);
                while (TRUE) {

-                       vm_page_t dst_page = vm_page_lookup(object,offset);
-                       if(dst_page == VM_PAGE_NULL) {
-                               if(object->shadow) {
+                       vm_page_t dst_page = vm_page_lookup(object, offset);
+                       if (dst_page == VM_PAGE_NULL) {
+                               if (object->shadow) {

                                        vm_object_t old_object;
                                        vm_object_lock(object->shadow);
                                        old_object = object;
                                        vm_object_t old_object;
                                        vm_object_lock(object->shadow);
                                        old_object = object;

-                                       offset = offset + object->shadow_offset;
+                                       offset = offset + object->vo_shadow_offset;

                                        object = object->shadow;
                                        vm_object_unlock(old_object);
                                } else {
                                        object = object->shadow;
                                        vm_object_unlock(old_object);
                                } else {


@@ -3236,44 +4288,42 @@ vm_map_get_phys_page(
                                        break;
                                }
                        } else {
                                        break;
                                }
                        } else {

-                               phys_page = (ppnum_t)(dst_page->phys_page);
+                               phys_page = (ppnum_t)(VM_PAGE_GET_PHYS_PAGE(dst_page));

                                vm_object_unlock(object);
                                break;
                        }
                }
                break;
                                vm_object_unlock(object);
                                break;
                        }
                }
                break;

-
-       } 
+       }

 
        vm_map_unlock(map);
        return phys_page;
 }
 
 
        vm_map_unlock(map);
        return phys_page;
 }
 

-
-
-kern_return_t kernel_object_iopl_request(      /* forward */
-       vm_named_entry_t        named_entry,
-       memory_object_offset_t  offset,
-       vm_size_t               *upl_size,
-       upl_t                   *upl_ptr,
-       upl_page_info_array_t   user_page_list,
-       unsigned int            *page_list_count,
-       int                     *flags);
+#if 0
+kern_return_t kernel_object_iopl_request(       /* forward */
+       vm_named_entry_t        named_entry,
+       memory_object_offset_t  offset,
+       upl_size_t              *upl_size,
+       upl_t                   *upl_ptr,
+       upl_page_info_array_t   user_page_list,
+       unsigned int            *page_list_count,
+       int                     *flags);

 
 kern_return_t
 kernel_object_iopl_request(
 
 kern_return_t
 kernel_object_iopl_request(

-       vm_named_entry_t        named_entry,
-       memory_object_offset_t  offset,
-       vm_size_t               *upl_size,
-       upl_t                   *upl_ptr,
-       upl_page_info_array_t   user_page_list,
-       unsigned int            *page_list_count,
-       int                     *flags)
+       vm_named_entry_t        named_entry,
+       memory_object_offset_t  offset,
+       upl_size_t              *upl_size,
+       upl_t                   *upl_ptr,
+       upl_page_info_array_t   user_page_list,
+       unsigned int            *page_list_count,
+       int                     *flags)

 {
 {

-       vm_object_t             object;
-       kern_return_t           ret;
+       vm_object_t             object;
+       kern_return_t           ret;

 
 

-       int                     caller_flags;
+       int                     caller_flags;

 
        caller_flags = *flags;
 
 
        caller_flags = *flags;
 


@@ -3286,81 +4336,56 @@ kernel_object_iopl_request(
        }
 
        /* a few checks to make sure user is obeying rules */
        }
 
        /* a few checks to make sure user is obeying rules */

-       if(*upl_size == 0) {
-               if(offset >= named_entry->size)
-                       return(KERN_INVALID_RIGHT);
-               *upl_size = named_entry->size - offset;
+       if (*upl_size == 0) {
+               if (offset >= named_entry->size) {
+                       return KERN_INVALID_RIGHT;
+               }
+               *upl_size = (upl_size_t) (named_entry->size - offset);
+               if (*upl_size != named_entry->size - offset) {
+                       return KERN_INVALID_ARGUMENT;
+               }

        }
        }

-       if(caller_flags & UPL_COPYOUT_FROM) {
-               if((named_entry->protection & VM_PROT_READ) 
-                                       != VM_PROT_READ) {
-                       return(KERN_INVALID_RIGHT);
+       if (caller_flags & UPL_COPYOUT_FROM) {
+               if ((named_entry->protection & VM_PROT_READ)
+                   != VM_PROT_READ) {
+                       return KERN_INVALID_RIGHT;

                }
        } else {
                }
        } else {

-               if((named_entry->protection & 
-                       (VM_PROT_READ | VM_PROT_WRITE)) 
-                       != (VM_PROT_READ | VM_PROT_WRITE)) {
-                       return(KERN_INVALID_RIGHT);
+               if ((named_entry->protection &
+                   (VM_PROT_READ | VM_PROT_WRITE))
+                   != (VM_PROT_READ | VM_PROT_WRITE)) {
+                       return KERN_INVALID_RIGHT;

                }
        }
                }
        }

-       if(named_entry->size < (offset + *upl_size))
-               return(KERN_INVALID_ARGUMENT);
+       if (named_entry->size < (offset + *upl_size)) {
+               return KERN_INVALID_ARGUMENT;
+       }

 
        /* the callers parameter offset is defined to be the */
        /* offset from beginning of named entry offset in object */
        offset = offset + named_entry->offset;
 
 
        /* the callers parameter offset is defined to be the */
        /* offset from beginning of named entry offset in object */
        offset = offset + named_entry->offset;
 

-       if(named_entry->is_sub_map) 
-               return (KERN_INVALID_ARGUMENT);
-               
-       named_entry_lock(named_entry);
-
-       if (named_entry->is_pager) {
-               object = vm_object_enter(named_entry->backing.pager, 
-                               named_entry->offset + named_entry->size, 
-                               named_entry->internal, 
-                               FALSE,
-                               FALSE);
-               if (object == VM_OBJECT_NULL) {
-                       named_entry_unlock(named_entry);
-                       return(KERN_INVALID_OBJECT);
-               }
-
-               /* JMM - drop reference on the pager here? */
-
-               /* create an extra reference for the object */
-               vm_object_lock(object);
-               vm_object_reference_locked(object);
-               named_entry->backing.object = object;
-               named_entry->is_pager = FALSE;
-               named_entry_unlock(named_entry);
+       if (named_entry->is_sub_map ||
+           named_entry->is_copy) {
+               return KERN_INVALID_ARGUMENT;
+       }

 
 

-               /* wait for object (if any) to be ready */
-               if (!named_entry->internal) {
-                       while (!object->pager_ready) {
-                               vm_object_wait(object,
-                                              VM_OBJECT_EVENT_PAGER_READY,
-                                              THREAD_UNINT);
-                               vm_object_lock(object);
-                       }
-               }
-               vm_object_unlock(object);
+       named_entry_lock(named_entry);

 
 

-       } else {
-               /* This is the case where we are going to operate */
-               /* an an already known object.  If the object is */
-               /* not ready it is internal.  An external     */
-               /* object cannot be mapped until it is ready  */
-               /* we can therefore avoid the ready check     */
-               /* in this case.  */
-               object = named_entry->backing.object;
-               vm_object_reference(object);
-               named_entry_unlock(named_entry);
-       }
+       /* This is the case where we are going to operate */
+       /* on an already known object.  If the object is */
+       /* not ready it is internal.  An external     */
+       /* object cannot be mapped until it is ready  */
+       /* we can therefore avoid the ready check     */
+       /* in this case.  */
+       object = named_entry->backing.object;
+       vm_object_reference(object);
+       named_entry_unlock(named_entry);

 
        if (!object->private) {
 
        if (!object->private) {

-               if (*upl_size > (MAX_UPL_TRANSFER*PAGE_SIZE))
-                       *upl_size = (MAX_UPL_TRANSFER*PAGE_SIZE);
+               if (*upl_size > MAX_UPL_TRANSFER_BYTES) {
+                       *upl_size = MAX_UPL_TRANSFER_BYTES;
+               }

                if (object->phys_contiguous) {
                        *flags = UPL_PHYS_CONTIG;
                } else {
                if (object->phys_contiguous) {
                        *flags = UPL_PHYS_CONTIG;
                } else {


@@ -3371,12 +4396,123 @@ kernel_object_iopl_request(
        }
 
        ret = vm_object_iopl_request(object,
        }
 
        ret = vm_object_iopl_request(object,

-                                    offset,
-                                    *upl_size,
-                                    upl_ptr,
-                                    user_page_list,
-                                    page_list_count,
-                                    caller_flags);
+           offset,
+           *upl_size,
+           upl_ptr,
+           user_page_list,
+           page_list_count,
+           (upl_control_flags_t)(unsigned int)caller_flags);

        vm_object_deallocate(object);
        return ret;
 }
        vm_object_deallocate(object);
        return ret;
 }

+#endif
+
+/*
+ * These symbols are looked up at runtime by vmware, VirtualBox,
+ * despite not being exported in the symbol sets.
+ */
+
+#if defined(__x86_64__)
+
+kern_return_t
+mach_vm_map(
+       vm_map_t                target_map,
+       mach_vm_offset_t        *address,
+       mach_vm_size_t  initial_size,
+       mach_vm_offset_t        mask,
+       int                     flags,
+       ipc_port_t              port,
+       vm_object_offset_t      offset,
+       boolean_t               copy,
+       vm_prot_t               cur_protection,
+       vm_prot_t               max_protection,
+       vm_inherit_t            inheritance);
+
+kern_return_t
+mach_vm_remap(
+       vm_map_t                target_map,
+       mach_vm_offset_t        *address,
+       mach_vm_size_t  size,
+       mach_vm_offset_t        mask,
+       int                     flags,
+       vm_map_t                src_map,
+       mach_vm_offset_t        memory_address,
+       boolean_t               copy,
+       vm_prot_t               *cur_protection,
+       vm_prot_t               *max_protection,
+       vm_inherit_t            inheritance);
+
+kern_return_t
+mach_vm_map(
+       vm_map_t                target_map,
+       mach_vm_offset_t        *address,
+       mach_vm_size_t  initial_size,
+       mach_vm_offset_t        mask,
+       int                     flags,
+       ipc_port_t              port,
+       vm_object_offset_t      offset,
+       boolean_t               copy,
+       vm_prot_t               cur_protection,
+       vm_prot_t               max_protection,
+       vm_inherit_t            inheritance)
+{
+       return mach_vm_map_external(target_map, address, initial_size, mask, flags, port,
+                  offset, copy, cur_protection, max_protection, inheritance);
+}
+
+kern_return_t
+mach_vm_remap(
+       vm_map_t                target_map,
+       mach_vm_offset_t        *address,
+       mach_vm_size_t  size,
+       mach_vm_offset_t        mask,
+       int                     flags,
+       vm_map_t                src_map,
+       mach_vm_offset_t        memory_address,
+       boolean_t               copy,
+       vm_prot_t               *cur_protection,
+       vm_prot_t               *max_protection,
+       vm_inherit_t            inheritance)
+{
+       return mach_vm_remap_external(target_map, address, size, mask, flags, src_map, memory_address,
+                  copy, cur_protection, max_protection, inheritance);
+}
+
+kern_return_t
+vm_map(
+       vm_map_t                target_map,
+       vm_offset_t             *address,
+       vm_size_t               size,
+       vm_offset_t             mask,
+       int                     flags,
+       ipc_port_t              port,
+       vm_offset_t             offset,
+       boolean_t               copy,
+       vm_prot_t               cur_protection,
+       vm_prot_t               max_protection,
+       vm_inherit_t            inheritance);
+
+kern_return_t
+vm_map(
+       vm_map_t                target_map,
+       vm_offset_t             *address,
+       vm_size_t               size,
+       vm_offset_t             mask,
+       int                     flags,
+       ipc_port_t              port,
+       vm_offset_t             offset,
+       boolean_t               copy,
+       vm_prot_t               cur_protection,
+       vm_prot_t               max_protection,
+       vm_inherit_t            inheritance)
+{
+       vm_tag_t tag;
+
+       VM_GET_FLAGS_ALIAS(flags, tag);
+       return vm_map_kernel(target_map, address, size, mask,
+                  flags, VM_MAP_KERNEL_FLAGS_NONE, tag,
+                  port, offset, copy,
+                  cur_protection, max_protection, inheritance);
+}
+
+#endif /* __x86_64__ */