xnu-1228.tar.gz

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

diff --git a/bsd/sys/posix_shm.h b/bsd/sys/posix_shm.h
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+/*
+ * Copyright (c) 1999-2003 Apple Computer, Inc. All rights reserved.
+ *
+ * @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
+ * limitations under the License.
+ * 
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
+ */
+/*
+ *     Copyright (c) 1990, 1996-1998 Apple Computer, Inc.
+ *     All Rights Reserved.
+ */
+/*
+ * posix_shm.c : Support for POSIX shared memory APIs
+ *
+ *     File:   posix_shm.c
+ *     Author: Ananthakrishna Ramesh
+ *
+ * HISTORY
+ * 2-Sep-1999  A.Ramesh
+ *     Created for MacOSX
+ *
+ */
+
+#ifndef        _SYS_POSIX_SHM_H_
+#define _SYS_POSIX_SHM_H_
+
+#include <sys/appleapiopts.h>
+#include <sys/types.h>
+#include <sys/proc.h>
+
+struct label;
+
+#define        PSHMNAMLEN      31      /* maximum name segment length we bother with */
+
+struct pshminfo {
+       unsigned int    pshm_flags;
+       unsigned int    pshm_usecount;
+       off_t           pshm_length;
+       mode_t          pshm_mode;
+       uid_t           pshm_uid;
+       gid_t           pshm_gid;
+       char            pshm_name[PSHMNAMLEN + 1];      /* segment name */
+       void *          pshm_memobject;
+#if DIAGNOSTIC
+       unsigned int    pshm_readcount;
+       unsigned int    pshm_writecount;
+       struct proc *   pshm_proc;
+#endif /* DIAGNOSTIC */
+       struct label *  pshm_label;
+};
+#define PSHMINFO_NULL (struct pshminfo *)0
+
+#define        PSHM_NONE       1
+#define        PSHM_DEFINED    2
+#define        PSHM_ALLOCATED  4
+#define        PSHM_MAPPED     8
+#define        PSHM_INUSE      0x10
+#define        PSHM_REMOVED    0x20
+#define        PSHM_INCREATE   0x40
+#define        PSHM_INDELETE   0x80
+
+#endif