1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright 1997-2003 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26 
  27 /*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T     */
  28 /*        All Rights Reserved   */
  29 
  30 
  31 #ifndef _SYS_SEM_H
  32 #define _SYS_SEM_H
  33 
  34 #pragma ident   "%Z%%M% %I%     %E% SMI"
  35 
  36 #include <sys/ipc.h>
  37 
  38 #ifdef  __cplusplus
  39 extern "C" {
  40 #endif
  41 
  42 /*
  43  * IPC Semaphore Facility.
  44  */
  45 
  46 /*
  47  * Implementation Constants.
  48  */
  49 
  50 /*
  51  * Permission Definitions.
  52  */
  53 
  54 #define SEM_A   0200    /* alter permission */
  55 #define SEM_R   0400    /* read permission */
  56 
  57 /*
  58  * Semaphore Operation Flags.
  59  */
  60 
  61 #define SEM_UNDO        010000  /* set up adjust on exit entry */
  62 
  63 /*
  64  * Semctl Command Definitions.
  65  */
  66 
  67 #define GETNCNT 3       /* get semncnt */
  68 #define GETPID  4       /* get sempid */
  69 #define GETVAL  5       /* get semval */
  70 #define GETALL  6       /* get all semval's */
  71 #define GETZCNT 7       /* get semzcnt */
  72 #define SETVAL  8       /* set semval */
  73 #define SETALL  9       /* set all semval's */
  74 
  75 /*
  76  * Structure Definitions.
  77  */
  78 
  79 struct semid_ds {
  80         struct ipc_perm sem_perm;       /* operation permission struct */
  81         struct sem      *sem_base;      /* ptr to first semaphore in set */
  82         ushort_t        sem_nsems;      /* # of semaphores in set */
  83 #if defined(_LP64)
  84         time_t          sem_otime;      /* last semop time */
  85         time_t          sem_ctime;      /* last change time */
  86 #else   /* _LP64 */
  87         time_t          sem_otime;      /* last semop time */
  88         int32_t         sem_pad1;       /* reserved for time_t expansion */
  89         time_t          sem_ctime;      /* last change time */
  90         int32_t         sem_pad2;       /* time_t expansion */
  91 #endif  /* _LP64 */
  92         int             sem_binary;     /* flag indicating semaphore type */
  93         long            sem_pad3[3];    /* reserve area */
  94 };
  95 
  96 /*
  97  * User semaphore template for semop system calls.
  98  */
  99 struct sembuf {
 100         ushort_t        sem_num;        /* semaphore # */
 101         short           sem_op;         /* semaphore operation */
 102         short           sem_flg;        /* operation flags */
 103 };
 104 
 105 #if !defined(_KERNEL)
 106 #if defined(__STDC__)
 107 int semctl(int, int, int, ...);
 108 int semget(key_t, int, int);
 109 int semids(int *, uint_t, uint_t *);
 110 int semop(int, struct sembuf *, size_t);
 111 #if defined(__EXTENSIONS__) || !defined(_XOPEN_SOURCE)
 112 int semtimedop(int, struct sembuf *, size_t, const struct timespec *);
 113 #endif
 114 #else /* __STDC__ */
 115 int semctl();
 116 int semget();
 117 int semids();
 118 int semop();
 119 int semtimedop();
 120 #endif /* __STDC__ */
 121 #endif /* ! _KERNEL */
 122 
 123 #ifdef  __cplusplus
 124 }
 125 #endif
 126 
 127 #endif  /* _SYS_SEM_H */