xnu-517.9.5.tar.gz

[apple/xnu.git] / osfmk / vm / vm_shared_memory_server.h

diff --git a/osfmk/vm/vm_shared_memory_server.h b/osfmk/vm/vm_shared_memory_server.h
index 31c6031fbf4f6532ffa5102b3f1e41e65ee068c7..5d3254b2b55d2def9fbc49ffe35987b947b0e213 100644 (file)
--- a/osfmk/vm/vm_shared_memory_server.h
+++ b/osfmk/vm/vm_shared_memory_server.h
@@ -3,22 +3,19 @@
  *
  * @APPLE_LICENSE_HEADER_START@
  * 
- * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
+ * 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 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. 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
+ * 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, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
- * limitations under the License.
+ * 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@
  */
@@ -55,12 +52,20 @@ struct shared_region_task_mappings {
        vm_offset_t             client_base;
        vm_offset_t             alternate_base;
        vm_offset_t             alternate_next;
+       unsigned int            fs_base;
+       unsigned int            system;
        int                     flags;
        vm_offset_t             self;
 };
 
-#define SHARED_REGION_SYSTEM   0x1
-#define SHARED_REGION_FULL     0x2
+#define SHARED_REGION_SYSTEM   0x1 // Default env for system and fs_root
+#define SHARED_REGION_FULL     0x2 // Shared regions are full
+#define SHARED_REGION_STALE    0x4 // Indicates no longer in default list
+
+
+/* defines for default environment, and co-resident systems */
+
+#define ENV_DEFAULT_ROOT       0
 
 typedef        struct shared_region_task_mappings *shared_region_task_mappings_t;
 typedef struct shared_region_mapping *shared_region_mapping_t;
@@ -93,6 +98,7 @@ struct load_struct {
        vm_offset_t             base_address;
        int                     mapping_cnt;
        loaded_mapping_t        *mappings;
+        vm_offset_t             file_offset; // start of file we mapped in
 };
 
 typedef struct load_struct load_struct_t;
@@ -125,6 +131,8 @@ typedef struct shared_region_object_chain *shared_region_object_chain_t;
 struct shared_region_mapping {
         decl_mutex_data(,       Lock)   /* Synchronization */
        int                     ref_count;
+       unsigned int            fs_base;
+       unsigned int            system;
        mach_port_t             text_region;
        vm_size_t               text_size;
        mach_port_t             data_region;
@@ -135,6 +143,7 @@ struct shared_region_mapping {
        vm_offset_t             alternate_next;
        int                     flags;
        int                     depth;
+       shared_region_mapping_t default_env_list;
        shared_region_object_chain_t object_chain;
        shared_region_mapping_t self;
        shared_region_mapping_t next;
@@ -171,6 +180,8 @@ extern kern_return_t shared_region_mapping_info(
                                vm_offset_t             *client_base,
                                vm_offset_t             *alternate_base,
                                vm_offset_t             *alternate_next,
+                               unsigned int            *fs_base,
+                               unsigned int            *system,
                                int                     *flags,
                                shared_region_mapping_t *next);
 
@@ -191,6 +202,10 @@ extern kern_return_t shared_region_mapping_ref(
 extern kern_return_t shared_region_mapping_dealloc(
                                shared_region_mapping_t shared_region);
 
+__private_extern__ kern_return_t shared_region_mapping_dealloc_lock(
+                               shared_region_mapping_t shared_region,
+                               int need_lock);
+
 extern kern_return_t shared_region_object_chain_attach(
                                shared_region_mapping_t target_region,
                                shared_region_mapping_t object_chain);
@@ -203,6 +218,20 @@ extern kern_return_t vm_set_shared_region(
                                task_t  task,
                                shared_region_mapping_t shared_region);
 
+extern shared_region_mapping_t update_default_shared_region(
+                               shared_region_mapping_t new_system_region);
+
+extern shared_region_mapping_t lookup_default_shared_region(
+                               unsigned int fs_base,
+                               unsigned int system);
+
+extern void remove_default_shared_region(
+                               shared_region_mapping_t system_region);
+
+__private_extern__ void remove_default_shared_region_lock(
+                               shared_region_mapping_t system_region,
+                               int need_lock);
+
 extern unsigned int lsf_mapping_pool_gauge();
 
 #endif /* __APPLE_API_PRIVATE */