/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright 2014 Garrett D'Amore <garrett@damore.org>
 *
 * Copyright 1997-2003 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

/*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/*        All Rights Reserved   */


#ifndef _SYS_SEM_H
#define _SYS_SEM_H

#include <sys/ipc.h>

#ifdef  __cplusplus
extern "C" {
#endif

/*
 * IPC Semaphore Facility.
 */

/*
 * Implementation Constants.
 */

/*
 * Permission Definitions.
 */

#define SEM_A   0200    /* alter permission */
#define SEM_R   0400    /* read permission */

/*
 * Semaphore Operation Flags.
 */

#define SEM_UNDO        010000  /* set up adjust on exit entry */

/*
 * Semctl Command Definitions.
 */

#define GETNCNT 3       /* get semncnt */
#define GETPID  4       /* get sempid */
#define GETVAL  5       /* get semval */
#define GETALL  6       /* get all semval's */
#define GETZCNT 7       /* get semzcnt */
#define SETVAL  8       /* set semval */
#define SETALL  9       /* set all semval's */

/*
 * Structure Definitions.
 */

struct semid_ds {
        struct ipc_perm sem_perm;       /* operation permission struct */
        struct sem      *sem_base;      /* ptr to first semaphore in set */
        ushort_t        sem_nsems;      /* # of semaphores in set */
#if defined(_LP64)
        time_t          sem_otime;      /* last semop time */
        time_t          sem_ctime;      /* last change time */
#else   /* _LP64 */
        time_t          sem_otime;      /* last semop time */
        int32_t         sem_pad1;       /* reserved for time_t expansion */
        time_t          sem_ctime;      /* last change time */
        int32_t         sem_pad2;       /* time_t expansion */
#endif  /* _LP64 */
        int             sem_binary;     /* flag indicating semaphore type */
        long            sem_pad3[3];    /* reserve area */
};

/*
 * User semaphore template for semop system calls.
 */
struct sembuf {
        ushort_t        sem_num;        /* semaphore # */
        short           sem_op;         /* semaphore operation */
        short           sem_flg;        /* operation flags */
};

#if !defined(_KERNEL)
int semctl(int, int, int, ...);
int semget(key_t, int, int);
int semids(int *, uint_t, uint_t *);
int semop(int, struct sembuf *, size_t);
#if defined(__EXTENSIONS__) || !defined(_XOPEN_SOURCE)
int semtimedop(int, struct sembuf *, size_t, const struct timespec *);
#endif
#endif /* ! _KERNEL */

#ifdef  __cplusplus
}
#endif

#endif  /* _SYS_SEM_H */