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 */ 128