bsd/sys/posix_sem.h

   1
   2 /*
   3  * Copyright (c) 1999-2003 Apple Computer, Inc. All rights reserved.
   4  *
   5  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   6  *
   7  * This file contains Original Code and/or Modifications of Original Code
   8  * as defined in and that are subject to the Apple Public Source License
   9  * Version 2.0 (the 'License'). You may not use this file except in
  10  * compliance with the License. The rights granted to you under the License
  11  * may not be used to create, or enable the creation or redistribution of,
  12  * unlawful or unlicensed copies of an Apple operating system, or to
  13  * circumvent, violate, or enable the circumvention or violation of, any
  14  * terms of an Apple operating system software license agreement.
  15  *
  16  * Please obtain a copy of the License at
  17  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  18  *
  19  * The Original Code and all software distributed under the License are
  20  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  21  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  22  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  23  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  24  * Please see the License for the specific language governing rights and
  25  * limitations under the License.
  26  *
  27  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  28  */
  29 /*
  30  *      Copyright (c) 1990, 1996-1998 Apple Computer, Inc.
  31  *      All Rights Reserved.
  32  */
  33 /*
  34  * posix_shm.c : Support for POSIX semaphore APIs
  35  *
  36  *      File:   posix_sem.c
  37  *      Author: Ananthakrishna Ramesh
  38  *
  39  * HISTORY
  40  * 2-Sep-1999   A.Ramesh
  41  *      Created for MacOSX
  42  *
  43  */
  44
  45 #ifndef _SYS_POSIX_SEM_H_
  46 #define _SYS_POSIX_SEM_H_
  47
  48 #include <sys/appleapiopts.h>
  49 #include <sys/types.h>
  50 #include <sys/proc.h>
  51
  52 struct label;
  53
  54 #define PSEMNAMLEN      31      /* maximum name segment length we bother with */
  55
  56 struct pseminfo {
  57         unsigned int    psem_flags;
  58         unsigned int    psem_usecount;
  59         mode_t          psem_mode;
  60         uid_t           psem_uid;
  61         gid_t           psem_gid;
  62         char            psem_name[PSEMNAMLEN + 1];      /* segment name */
  63         void *          psem_semobject;
  64         struct proc *   sem_proc;
  65         struct label *  psem_label;
  66 };
  67
  68 #define PSEMINFO_NULL (struct pseminfo *)0
  69
  70 #define PSEM_NONE       1
  71 #define PSEM_DEFINED    2
  72 #define PSEM_ALLOCATED  4
  73 #define PSEM_MAPPED     8
  74 #define PSEM_INUSE      0x10
  75 #define PSEM_REMOVED    0x20
  76 #define PSEM_INCREATE   0x40
  77 #define PSEM_INDELETE   0x80
  78
  79 #endif