xnu-1228.0.2.tar.gz

[apple/xnu.git] / bsd / sys / shm_internal.h

diff --git a/bsd/sys/shm_internal.h b/bsd/sys/shm_internal.h
index e0bd76189068ec548c25186935adb13d8d2c0f43..67b42d87a4d04b41c4fad995fccabb58b2f30169 100644 (file)
--- a/bsd/sys/shm_internal.h
+++ b/bsd/sys/shm_internal.h
@@ -1,23 +1,29 @@
 /*
  * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
  *
- * @APPLE_LICENSE_HEADER_START@
+ * @APPLE_OSREFERENCE_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 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.
  * 
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * 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 OR NON-INFRINGEMENT.  Please see the
- * License for the specific language governing rights and limitations
- * under the License.
+ * 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_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  */
 /*     $NetBSD: shm.h,v 1.15 1994/06/29 06:45:17 cgd Exp $     */
 
@@ -50,6 +56,12 @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
+/*
+ * NOTICE: This file was modified by SPARTA, Inc. in 2005 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.
+ */
 
 /*
  * As defined+described in "X/Open System Interfaces and Headers"
@@ -89,18 +101,32 @@ struct user_shmid_ds {
  * might be of interest to user programs.  Also part of the ipcs interface.
  * Note: use of user_ssize_t intentional: permits 32 bit ipcs to provide
  * information about 64 bit programs shared segments.
+ * Note 2: user_ssize_t is not that useful if it's not 64-bit,
+ * so let's use int64_t explicitely...
  */
 struct shminfo {
-       user_ssize_t    shmmax;         /* max shm segment size (bytes) */
-       user_ssize_t    shmmin;         /* min shm segment size (bytes) */
-       user_ssize_t    shmmni;         /* max number of shm identifiers */
-       user_ssize_t    shmseg;         /* max shm segments per process */
-       user_ssize_t    shmall;         /* max amount of shm (pages) */
+       int64_t shmmax;         /* max shm segment size (bytes) */
+       int64_t shmmin;         /* min shm segment size (bytes) */
+       int64_t shmmni;         /* max number of shm identifiers */
+       int64_t shmseg;         /* max shm segments per process */
+       int64_t shmall;         /* max amount of shm (pages) */
 };
 
 #ifdef KERNEL
+
+struct label;
+
+/* 
+ * Add a kernel wrapper to the shmid_ds struct so that private info (like the
+ * MAC label) can be added to it, without changing the user interface.
+ */
+struct shmid_kernel {
+       struct user_shmid_ds u;
+       struct label *label;    /* MAC label */
+};
+
 extern struct shminfo shminfo;
-extern struct user_shmid_ds *shmsegs;
+extern struct shmid_kernel *shmsegs;
 
 struct proc;