122 lines
3.8 KiB
C
122 lines
3.8 KiB
C
|
/* $NetBSD: sem.h,v 1.29 2009/01/19 19:39:41 christos Exp $ */
|
||
|
|
|
||
|
|
/*-
|
||
|
|
* Copyright (c) 1999 The NetBSD Foundation, Inc.
|
||
|
|
* All rights reserved.
|
||
|
|
*
|
||
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
||
|
|
* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
|
||
|
|
* NASA Ames Research Center.
|
||
|
|
*
|
||
|
|
* Redistribution and use in source and binary forms, with or without
|
||
|
|
* modification, are permitted provided that the following conditions
|
||
|
|
* are met:
|
||
|
|
* 1. Redistributions of source code must retain the above copyright
|
||
|
|
* notice, this list of conditions and the following disclaimer.
|
||
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
||
|
|
* notice, this list of conditions and the following disclaimer in the
|
||
|
|
* documentation and/or other materials provided with the distribution.
|
||
|
|
*
|
||
|
|
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
||
|
|
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
||
|
|
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
||
|
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
|
||
|
|
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
||
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
||
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
||
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
||
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
||
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*
|
||
|
|
* SVID compatible sem.h file
|
||
|
|
*
|
||
|
|
* Author: Daniel Boulet
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef _SYS_SEM_H_
|
||
|
|
#define _SYS_SEM_H_
|
||
|
|
|
||
|
|
#include <sys/featuretest.h>
|
||
|
|
|
||
|
|
#include <sys/ipc.h>
|
||
|
|
|
||
|
|
struct semid_ds {
|
||
|
|
struct ipc_perm sem_perm; /* operation permission struct */
|
||
|
|
time_t sem_otime; /* last semop() time */
|
||
|
|
unsigned long int __unused1;
|
||
|
|
time_t sem_ctime; /* last time changed by semctl() */
|
||
|
|
unsigned long int __unused2;
|
||
|
|
unsigned long int sem_nsems; /* number of semaphores in set */
|
||
|
|
unsigned long int __unused3;
|
||
|
|
unsigned long int __unused4;
|
||
|
|
};
|
||
|
|
|
||
|
|
/*
|
||
|
|
* semop's sops parameter structure
|
||
|
|
*/
|
||
|
|
struct sembuf {
|
||
|
|
unsigned short sem_num; /* semaphore # */
|
||
|
|
short sem_op; /* semaphore operation */
|
||
|
|
short sem_flg; /* operation flags */
|
||
|
|
};
|
||
|
|
#define SEM_UNDO 0x1000 /* undo changes on process exit */
|
||
|
|
|
||
|
|
/*
|
||
|
|
* commands for semctl
|
||
|
|
*/
|
||
|
|
#define GETPID 11 /* get sempid */
|
||
|
|
#define GETVAL 12 /* get semval */
|
||
|
|
#define GETALL 13 /* get all semval's */
|
||
|
|
#define GETNCNT 14 /* get semncnt */
|
||
|
|
#define GETZCNT 15 /* get semzcnt */
|
||
|
|
#define SETVAL 16 /* set semval */
|
||
|
|
#define SETALL 17 /* set all semval's */
|
||
|
|
|
||
|
|
#ifdef __USE_MISC
|
||
|
|
|
||
|
|
/* ipcs ctl cmds */
|
||
|
|
# define SEM_STAT 18
|
||
|
|
# define SEM_INFO 19
|
||
|
|
|
||
|
|
/*
|
||
|
|
* semaphore info struct
|
||
|
|
*/
|
||
|
|
struct seminfo {
|
||
|
|
int32_t semmap; /* # of entries in semaphore map */
|
||
|
|
int32_t semmni; /* # of semaphore identifiers */
|
||
|
|
int32_t semmns; /* # of semaphores in system */
|
||
|
|
int32_t semmnu; /* # of undo structures in system */
|
||
|
|
int32_t semmsl; /* max # of semaphores per id */
|
||
|
|
int32_t semopm; /* max # of operations per semop call */
|
||
|
|
int32_t semume; /* max # of undo entries per process */
|
||
|
|
int32_t semusz; /* size in bytes of undo structure */
|
||
|
|
int32_t semvmx; /* semaphore maximum value */
|
||
|
|
int32_t semaem; /* adjust on exit max value */
|
||
|
|
};
|
||
|
|
|
||
|
|
#endif /* __USE_MISC */
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Configuration parameters
|
||
|
|
*/
|
||
|
|
#define SEMMNI 128
|
||
|
|
#define SEMMSL 250
|
||
|
|
#define SEMMNS (SEMMSL*SEMMNI)
|
||
|
|
|
||
|
|
#define SEMOPM 32
|
||
|
|
#define SEMVMX 32767
|
||
|
|
|
||
|
|
|
||
|
|
#include <sys/cdefs.h>
|
||
|
|
|
||
|
|
__BEGIN_DECLS
|
||
|
|
int semctl(int, int, int, ...);
|
||
|
|
int semget(key_t, int, int);
|
||
|
|
int semop(int, struct sembuf *, size_t);
|
||
|
|
__END_DECLS
|
||
|
|
|
||
|
|
#endif /* !_SYS_SEM_H_ */
|