1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* 23*0Sstevel@tonic-gate * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24*0Sstevel@tonic-gate * Use is subject to license terms. 25*0Sstevel@tonic-gate */ 26*0Sstevel@tonic-gate 27*0Sstevel@tonic-gate /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 28*0Sstevel@tonic-gate /* All Rights Reserved */ 29*0Sstevel@tonic-gate 30*0Sstevel@tonic-gate #ifndef _SYS_SEM_IMPL_H 31*0Sstevel@tonic-gate #define _SYS_SEM_IMPL_H 32*0Sstevel@tonic-gate 33*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 34*0Sstevel@tonic-gate 35*0Sstevel@tonic-gate #include <sys/ipc_impl.h> 36*0Sstevel@tonic-gate #if defined(_KERNEL) || defined(_KMEMUSER) 37*0Sstevel@tonic-gate #include <sys/sem.h> 38*0Sstevel@tonic-gate #include <sys/t_lock.h> 39*0Sstevel@tonic-gate #include <sys/avl.h> 40*0Sstevel@tonic-gate #include <sys/list.h> 41*0Sstevel@tonic-gate #endif 42*0Sstevel@tonic-gate 43*0Sstevel@tonic-gate #ifdef __cplusplus 44*0Sstevel@tonic-gate extern "C" { 45*0Sstevel@tonic-gate #endif 46*0Sstevel@tonic-gate 47*0Sstevel@tonic-gate /* 48*0Sstevel@tonic-gate * Argument vectors for the various flavors of semsys(). 49*0Sstevel@tonic-gate */ 50*0Sstevel@tonic-gate 51*0Sstevel@tonic-gate #define SEMCTL 0 52*0Sstevel@tonic-gate #define SEMGET 1 53*0Sstevel@tonic-gate #define SEMOP 2 54*0Sstevel@tonic-gate #define SEMIDS 3 55*0Sstevel@tonic-gate #define SEMTIMEDOP 4 56*0Sstevel@tonic-gate 57*0Sstevel@tonic-gate #if defined(_KERNEL) || defined(_KMEMUSER) 58*0Sstevel@tonic-gate 59*0Sstevel@tonic-gate /* 60*0Sstevel@tonic-gate * There is one semaphore id data structure (semid_ds) for each set of 61*0Sstevel@tonic-gate * semaphores in the system. 62*0Sstevel@tonic-gate */ 63*0Sstevel@tonic-gate typedef struct ksemid { 64*0Sstevel@tonic-gate kipc_perm_t sem_perm; /* operation permission struct */ 65*0Sstevel@tonic-gate struct sem *sem_base; /* ptr to first semaphore in set */ 66*0Sstevel@tonic-gate ushort_t sem_nsems; /* # of semaphores in set */ 67*0Sstevel@tonic-gate time_t sem_otime; /* last semop time */ 68*0Sstevel@tonic-gate time_t sem_ctime; /* last change time */ 69*0Sstevel@tonic-gate int sem_binary; /* flag indicating semaphore type */ 70*0Sstevel@tonic-gate int sem_maxops; /* maximum number of operations */ 71*0Sstevel@tonic-gate list_t sem_undos; /* list of undo structures */ 72*0Sstevel@tonic-gate } ksemid_t; 73*0Sstevel@tonic-gate 74*0Sstevel@tonic-gate /* 75*0Sstevel@tonic-gate * There is one semaphore structure (sem) for each semaphore in the system. 76*0Sstevel@tonic-gate */ 77*0Sstevel@tonic-gate struct sem { 78*0Sstevel@tonic-gate ushort_t semval; /* semaphore value */ 79*0Sstevel@tonic-gate pid_t sempid; /* pid of last operation */ 80*0Sstevel@tonic-gate ushort_t semncnt; /* # awaiting semval > cval */ 81*0Sstevel@tonic-gate ushort_t semzcnt; /* # awaiting semval = 0 */ 82*0Sstevel@tonic-gate kcondvar_t semncnt_cv; 83*0Sstevel@tonic-gate kcondvar_t semzcnt_cv; 84*0Sstevel@tonic-gate }; 85*0Sstevel@tonic-gate 86*0Sstevel@tonic-gate /* 87*0Sstevel@tonic-gate * There is one undo structure per process in the system. 88*0Sstevel@tonic-gate */ 89*0Sstevel@tonic-gate struct sem_undo { 90*0Sstevel@tonic-gate avl_node_t un_avl; /* node in per-process avl tree */ 91*0Sstevel@tonic-gate list_node_t un_list; /* ptr to next active undo structure */ 92*0Sstevel@tonic-gate proc_t *un_proc; /* back-pointer to process */ 93*0Sstevel@tonic-gate ksemid_t *un_sp; /* back-pointer to semaphore */ 94*0Sstevel@tonic-gate int un_aoe[1]; /* adjust on exit values */ 95*0Sstevel@tonic-gate }; 96*0Sstevel@tonic-gate #endif /* _KERNEL */ 97*0Sstevel@tonic-gate 98*0Sstevel@tonic-gate #if defined(_SYSCALL32) 99*0Sstevel@tonic-gate /* 100*0Sstevel@tonic-gate * LP64 view of the ILP32 semid_ds structure 101*0Sstevel@tonic-gate */ 102*0Sstevel@tonic-gate struct semid_ds32 { 103*0Sstevel@tonic-gate struct ipc_perm32 sem_perm; /* operation permission struct */ 104*0Sstevel@tonic-gate caddr32_t sem_base; /* ptr to first semaphore in set */ 105*0Sstevel@tonic-gate uint16_t sem_nsems; /* # of semaphores in set */ 106*0Sstevel@tonic-gate time32_t sem_otime; /* last semop time */ 107*0Sstevel@tonic-gate int32_t sem_pad1; /* reserved for time_t expansion */ 108*0Sstevel@tonic-gate time32_t sem_ctime; /* last semop time */ 109*0Sstevel@tonic-gate int32_t sem_pad2; /* reserved for time_t expansion */ 110*0Sstevel@tonic-gate int32_t sem_binary; /* flag indicating semaphore type */ 111*0Sstevel@tonic-gate int32_t sem_pad3[3]; /* reserve area */ 112*0Sstevel@tonic-gate }; 113*0Sstevel@tonic-gate #endif 114*0Sstevel@tonic-gate 115*0Sstevel@tonic-gate #ifdef _KERNEL 116*0Sstevel@tonic-gate extern void semexit(proc_t *); 117*0Sstevel@tonic-gate #endif 118*0Sstevel@tonic-gate 119*0Sstevel@tonic-gate #ifdef __cplusplus 120*0Sstevel@tonic-gate } 121*0Sstevel@tonic-gate #endif 122*0Sstevel@tonic-gate 123*0Sstevel@tonic-gate #endif /* _SYS_SEM_IMPL_H */ 124