/*
- * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2007 Apple Inc. All rights reserved.
*
- * @APPLE_LICENSE_OSREFERENCE_HEADER_START@
+ * @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,
- * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
+ * 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@
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/*
* @OSF_COPYRIGHT@
* 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.
+ */
/*
*/
/*
typedef natural_t ipc_object_type_t;
/*
- * There is no lock in the ipc_object; it is in the enclosing kernel
- * data structure (rpc_common_data) used by both ipc_port and ipc_pset.
* The ipc_object is used to both tag and reference count these two data
* structures, and (Noto Bene!) pointers to either of these or the
* ipc_object at the head of these are freely cast back and forth; hence
* (with which lock size varies).
*/
struct ipc_object {
+ ipc_object_bits_t io_bits;
ipc_object_refs_t io_references;
+ decl_lck_mtx_data(, io_lock_data)
+};
+
+/*
+ * If another object type needs to participate in io_kotype()-based
+ * dispatching, it must include a stub structure as the first
+ * element
+ */
+struct ipc_object_header {
ipc_object_bits_t io_bits;
- mach_port_name_t io_receiver_name;
- decl_mutex_data(, io_lock_data)
+#ifdef __LP64__
+ natural_t io_padding; /* pad to natural boundary */
+#endif
};
/*
* Legacy defines. Should use IPC_OBJECT_NULL, etc...
*/
#define IO_NULL ((ipc_object_t) 0)
-#define IO_DEAD ((ipc_object_t) -1)
+#define IO_DEAD ((ipc_object_t) ~0UL)
#define IO_VALID(io) (((io) != IO_NULL) && ((io) != IO_DEAD))
/*
#define io_alloc(otype) \
((ipc_object_t) zalloc(ipc_object_zones[(otype)]))
-#if MACH_ASSERT
-/*
- * Call the routine for io_free so that checking can be performed.
- */
extern void io_free(
unsigned int otype,
ipc_object_t object);
-#else /* MACH_ASSERT */
-#define io_free(otype, io) \
- zfree(ipc_object_zones[(otype)], (io))
-#endif /* MACH_ASSERT */
-
/*
- * Here we depend on the ipc_object being first within the ipc_common_data,
- * which is first within the rpc_common_data, which in turn must be first
- * within any kernel data structure needing to lock an ipc_object
+ * Here we depend on the ipc_object being first within the kernel struct
* (ipc_port and ipc_pset).
*/
#define io_lock_init(io) \
- mutex_init(&(io)->io_lock_data, 0)
+ lck_mtx_init(&(io)->io_lock_data, &ipc_lck_grp, &ipc_lck_attr)
+#define io_lock_destroy(io) \
+ lck_mtx_destroy(&(io)->io_lock_data, &ipc_lck_grp)
#define io_lock(io) \
- mutex_lock(&(io)->io_lock_data)
+ lck_mtx_lock(&(io)->io_lock_data)
#define io_lock_try(io) \
- mutex_try(&(io)->io_lock_data)
+ lck_mtx_try_lock(&(io)->io_lock_data)
#define io_unlock(io) \
- mutex_unlock(&(io)->io_lock_data)
+ lck_mtx_unlock(&(io)->io_lock_data)
#define _VOLATILE_ volatile
(io)->io_references--; \
MACRO_END
+/*
+ * Retrieve a label for use in a kernel call that takes a security
+ * label as a parameter. If necessary, io_getlabel acquires internal
+ * (not io_lock) locks, and io_unlocklabel releases them.
+ */
+
+struct label;
+extern struct label *io_getlabel (ipc_object_t obj);
+#define io_unlocklabel(obj)
+
/*
* Exported interfaces
*/
projects / apple / xnu.git / blobdiff