xnu-1456.1.26.tar.gz

[apple/xnu.git] / osfmk / ipc / ipc_space.h

diff --git a/osfmk/ipc/ipc_space.h b/osfmk/ipc/ipc_space.h
index 3c8aea3f9045da983558f174b760239485c9663b..39c2e45a4cf6f45936c882cc57e5b83f635bedee 100644 (file)
--- a/osfmk/ipc/ipc_space.h
+++ b/osfmk/ipc/ipc_space.h
@@ -53,6 +53,12 @@
  * any improvements or extensions that they make and grant Carnegie Mellon
  * the rights to redistribute these changes.
  */
+/*
+ * NOTICE: This file was modified by McAfee Research in 2004 to introduce
+ * support for mandatory and extensible security protections.  This notice
+ * is included in support of clause 2.2 (b) of the Apple Public License,
+ * Version 2.0.
+ */
 /*
  */
 /*
@@ -75,7 +81,7 @@
 #include <sys/appleapiopts.h>
 
 #ifdef __APPLE_API_PRIVATE
-#ifdef MACH_KERNEL_PRIVATE
+#if MACH_KERNEL_PRIVATE
 #include <mach_kdb.h>
 #include <kern/macro_help.h>
 #include <kern/kern_types.h>
@@ -105,10 +111,10 @@
 typedef natural_t ipc_space_refs_t;
 
 struct ipc_space {
-       decl_mutex_data(,is_ref_lock_data)
+       decl_lck_mtx_data(,is_ref_lock_data)
        ipc_space_refs_t is_references;
 
-       decl_mutex_data(,is_lock_data)
+       decl_lck_mtx_data(,is_lock_data)
        boolean_t is_active;            /* is the space alive? */
        boolean_t is_growing;           /* is the space growing? */
        ipc_entry_t is_table;           /* an array of entries */
@@ -119,6 +125,8 @@ struct ipc_space {
        ipc_entry_num_t is_tree_small;  /* # of small entries in the tree */
        ipc_entry_num_t is_tree_hash;   /* # of hashed entries in the tree */
        boolean_t is_fast;              /* for is_fast_space() */
+
+       task_t is_task;                 /* associated task */
 };
 
 #define        IS_NULL                 ((ipc_space_t) 0)
@@ -139,43 +147,50 @@ extern ipc_space_t default_pager_space;
 
 #define is_fast_space(is)      ((is)->is_fast)
 
-#define        is_ref_lock_init(is)    mutex_init(&(is)->is_ref_lock_data, 0)
+#define        is_ref_lock_init(is)    lck_mtx_init(&(is)->is_ref_lock_data, &ipc_lck_grp, &ipc_lck_attr)
+#define        is_ref_lock_destroy(is) lck_mtx_destroy(&(is)->is_ref_lock_data, &ipc_lck_grp)
 
 #define        ipc_space_reference_macro(is)                                   \
 MACRO_BEGIN                                                            \
-       mutex_lock(&(is)->is_ref_lock_data);                            \
+       lck_mtx_lock(&(is)->is_ref_lock_data);                          \
        assert((is)->is_references > 0);                                \
        (is)->is_references++;                                          \
-       mutex_unlock(&(is)->is_ref_lock_data);                          \
+       lck_mtx_unlock(&(is)->is_ref_lock_data);                                \
 MACRO_END
 
 #define        ipc_space_release_macro(is)                                     \
 MACRO_BEGIN                                                            \
        ipc_space_refs_t _refs;                                         \
                                                                        \
-       mutex_lock(&(is)->is_ref_lock_data);                            \
+       lck_mtx_lock(&(is)->is_ref_lock_data);                          \
        assert((is)->is_references > 0);                                \
        _refs = --(is)->is_references;                                  \
-       mutex_unlock(&(is)->is_ref_lock_data);                          \
+       lck_mtx_unlock(&(is)->is_ref_lock_data);                                \
                                                                        \
-       if (_refs == 0)                                                 \
+       if (_refs == 0) {                                               \
+               is_lock_destroy(is);                                    \
+               is_ref_lock_destroy(is);                                \
                is_free(is);                                            \
+       }                                                               \
 MACRO_END
 
-#define        is_lock_init(is)        mutex_init(&(is)->is_lock_data, 0)
-
-#define        is_read_lock(is)        mutex_lock(&(is)->is_lock_data)
-#define is_read_unlock(is)     mutex_unlock(&(is)->is_lock_data)
-#define is_read_sleep(is)      thread_sleep_mutex((event_t)(is),       \
-                                                  &(is)->is_lock_data, \
-                                                  THREAD_UNINT)
-
-#define        is_write_lock(is)       mutex_lock(&(is)->is_lock_data)
-#define        is_write_lock_try(is)   mutex_try(&(is)->is_lock_data)
-#define is_write_unlock(is)    mutex_unlock(&(is)->is_lock_data)
-#define is_write_sleep(is)     thread_sleep_mutex((event_t)(is),       \
-                                                  &(is)->is_lock_data, \
-                                                  THREAD_UNINT)
+#define        is_lock_init(is)        lck_mtx_init(&(is)->is_lock_data, &ipc_lck_grp, &ipc_lck_attr)
+#define        is_lock_destroy(is)     lck_mtx_destroy(&(is)->is_lock_data, &ipc_lck_grp)
+
+#define        is_read_lock(is)        lck_mtx_lock(&(is)->is_lock_data)
+#define is_read_unlock(is)     lck_mtx_unlock(&(is)->is_lock_data)
+#define is_read_sleep(is)      lck_mtx_sleep(&(is)->is_lock_data,      \
+                                                       LCK_SLEEP_DEFAULT,                                      \
+                                                       (event_t)(is),                                          \
+                                                       THREAD_UNINT)
+
+#define        is_write_lock(is)       lck_mtx_lock(&(is)->is_lock_data)
+#define        is_write_lock_try(is)   lck_mtx_try_lock(&(is)->is_lock_data)
+#define is_write_unlock(is)    lck_mtx_unlock(&(is)->is_lock_data)
+#define is_write_sleep(is)     lck_mtx_sleep(&(is)->is_lock_data,      \
+                                                       LCK_SLEEP_DEFAULT,                                      \
+                                                       (event_t)(is),                                          \
+                                                       THREAD_UNINT)
 
 #define        is_reference(is)        ipc_space_reference(is)
 #define        is_release(is)          ipc_space_release(is)