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 1987 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* Copyright (c) 1984 AT&T */ 28 /* All Rights Reserved */ 29 30 #ifndef _sys_msg_h 31 #define _sys_msg_h 32 33 #pragma ident "%Z%%M% %I% %E% SMI" 34 35 /* 36 * IPC Message Facility. 37 */ 38 39 /* 40 * Message Operation Flags. 41 */ 42 #define MSG_NOERROR 010000 /* no error if big message */ 43 44 /* 45 * Structure Definitions. 46 */ 47 48 /* 49 * There is one msg queue id data structure for each q in the system. 50 */ 51 52 struct msqid_ds { 53 struct ipc_perm msg_perm; /* operation permission struct */ 54 struct msg *msg_first; /* ptr to first message on q */ 55 struct msg *msg_last; /* ptr to last message on q */ 56 ushort msg_cbytes; /* current # bytes on q */ 57 ushort msg_qnum; /* # of messages on q */ 58 ushort msg_qbytes; /* max # of bytes on q */ 59 ushort msg_lspid; /* pid of last msgsnd */ 60 ushort msg_lrpid; /* pid of last msgrcv */ 61 time_t msg_stime; /* last msgsnd time */ 62 time_t msg_rtime; /* last msgrcv time */ 63 time_t msg_ctime; /* last change time */ 64 }; 65 66 /* 67 * User message buffer template for msgsnd and msgrcv system calls. 68 */ 69 70 /* HACK :: change the name when compiling the kernel to avoid conflicts */ 71 struct msgbuf { 72 long mtype; /* message type */ 73 char mtext[1]; /* message text */ 74 }; 75 76 /* 77 * There is one msg structure for each message that may be in the system. 78 */ 79 80 struct msg { 81 struct msg *msg_next; /* ptr to next message on q */ 82 long msg_type; /* message type */ 83 ushort msg_ts; /* message text size */ 84 ushort msg_spot; /* message text map address */ 85 }; 86 87 #endif /* !_sys_msg_h */ 88