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/*
* 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 2004 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_IMPL_H
#define _SYS_SEM_IMPL_H
#pragma ident "%Z%%M% %I% %E% SMI"
#include <sys/ipc_impl.h>
#if defined(_KERNEL) || defined(_KMEMUSER)
#include <sys/sem.h>
#include <sys/t_lock.h>
#include <sys/avl.h>
#include <sys/list.h>
#endif
#ifdef __cplusplus
extern "C" {
#endif
/*
* Argument vectors for the various flavors of semsys().
*/
#define SEMCTL 0
#define SEMGET 1
#define SEMOP 2
#define SEMIDS 3
#define SEMTIMEDOP 4
#if defined(_KERNEL) || defined(_KMEMUSER)
/*
* There is one semaphore id data structure (semid_ds) for each set of
* semaphores in the system.
*/
typedef struct ksemid {
kipc_perm_t sem_perm; /* operation permission struct */
struct sem *sem_base; /* ptr to first semaphore in set */
ushort_t sem_nsems; /* # of semaphores in set */
time_t sem_otime; /* last semop time */
time_t sem_ctime; /* last change time */
int sem_binary; /* flag indicating semaphore type */
int sem_maxops; /* maximum number of operations */
list_t sem_undos; /* list of undo structures */
} ksemid_t;
/*
* There is one semaphore structure (sem) for each semaphore in the system.
*/
struct sem {
ushort_t semval; /* semaphore value */
pid_t sempid; /* pid of last operation */
ushort_t semncnt; /* # awaiting semval > cval */
ushort_t semzcnt; /* # awaiting semval = 0 */
kcondvar_t semncnt_cv;
kcondvar_t semzcnt_cv;
};
/*
* There is one undo structure per process in the system.
*/
struct sem_undo {
avl_node_t un_avl; /* node in per-process avl tree */
list_node_t un_list; /* ptr to next active undo structure */
proc_t *un_proc; /* back-pointer to process */
ksemid_t *un_sp; /* back-pointer to semaphore */
int un_aoe[1]; /* adjust on exit values */
};
#endif /* _KERNEL */
#if defined(_SYSCALL32)
/*
* LP64 view of the ILP32 semid_ds structure
*/
struct semid_ds32 {
struct ipc_perm32 sem_perm; /* operation permission struct */
caddr32_t sem_base; /* ptr to first semaphore in set */
uint16_t sem_nsems; /* # of semaphores in set */
time32_t sem_otime; /* last semop time */
int32_t sem_pad1; /* reserved for time_t expansion */
time32_t sem_ctime; /* last semop time */
int32_t sem_pad2; /* reserved for time_t expansion */
int32_t sem_binary; /* flag indicating semaphore type */
int32_t sem_pad3[3]; /* reserve area */
};
#endif
#ifdef _KERNEL
extern void semexit(proc_t *);
#endif
#ifdef __cplusplus
}
#endif
#endif /* _SYS_SEM_IMPL_H */
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