/*
* Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
*
- * @APPLE_LICENSE_HEADER_START@
+ * @APPLE_LICENSE_OSREFERENCE_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
- * 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@
+ * 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,
+ * 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_LICENSE_OSREFERENCE_HEADER_END@
*/
/*
* @OSF_COPYRIGHT@
kern_return_t error;
vm_map_copy_t copy;
- if (map == VM_MAP_NULL)
+ if (map == VM_MAP_NULL ||
+ count > VM_MAP_ENTRY_MAX)
return(KERN_INVALID_ARGUMENT);
error = KERN_SUCCESS;
kern_return_t error;
vm_map_copy_t copy;
- if (map == VM_MAP_NULL)
+ if (map == VM_MAP_NULL ||
+ count > VM_MAP_ENTRY_MAX)
return(KERN_INVALID_ARGUMENT);
error = KERN_SUCCESS;
shadow_object = map_entry->object.vm_object;
vm_object_unlock(object);
+ prot = map_entry->protection & ~VM_PROT_WRITE;
+#ifdef STACK_ONLY_NX
+ if (map_entry->alias != VM_MEMORY_STACK && prot)
+ prot |= VM_PROT_EXECUTE;
+#endif
vm_object_pmap_protect(
object, map_entry->offset,
total_size,
? PMAP_NULL :
target_map->pmap),
map_entry->vme_start,
- map_entry->protection & ~VM_PROT_WRITE);
+ prot);
total_size -= (map_entry->vme_end
- map_entry->vme_start);
next_entry = map_entry->vme_next;
mutex_unlock(&(named_entry)->Lock);
}
+/* Allow manipulation of individual page state. This is actually part of */
+/* the UPL regimen but takes place on the memory entry rather than on a UPL */
+
+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)
+{
+ vm_named_entry_t mem_entry;
+ vm_object_t object;
+ kern_return_t kr;
+
+ if (entry_port == IP_NULL ||
+ ip_kotype(entry_port) != IKOT_NAMED_ENTRY) {
+ return KERN_INVALID_ARGUMENT;
+ }
+
+ mem_entry = (vm_named_entry_t) entry_port->ip_kobject;
+
+ named_entry_lock(mem_entry);
+
+ if (mem_entry->is_sub_map || mem_entry->is_pager) {
+ 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_reference(object);
+ named_entry_unlock(mem_entry);
+
+ kr = vm_object_page_op(object, offset, ops, phys_entry, flags);
+
+ vm_object_deallocate(object);
+
+ 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
+ * 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,
+ int ops,
+ int *range)
+{
+ vm_named_entry_t mem_entry;
+ vm_object_t object;
+ kern_return_t kr;
+
+ if (entry_port == IP_NULL ||
+ ip_kotype(entry_port) != IKOT_NAMED_ENTRY) {
+ return KERN_INVALID_ARGUMENT;
+ }
+
+ mem_entry = (vm_named_entry_t) entry_port->ip_kobject;
+
+ named_entry_lock(mem_entry);
+
+ if (mem_entry->is_sub_map || mem_entry->is_pager) {
+ 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_reference(object);
+ named_entry_unlock(mem_entry);
+
+ kr = vm_object_range_op(object,
+ offset_beg,
+ offset_end,
+ ops,
+ range);
+
+ vm_object_deallocate(object);
+
+ return kr;
+}
kern_return_t
projects / apple / xnu.git / blobdiff