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 2004 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #ifndef _SYS_MSG_IMPL_H 28 #define _SYS_MSG_IMPL_H 29 30 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 #include <sys/ipc_impl.h> 33 #if defined(_KERNEL) || defined(_KMEMUSER) 34 #include <sys/msg.h> 35 #include <sys/t_lock.h> 36 #include <sys/list.h> 37 #endif 38 39 #ifdef __cplusplus 40 extern "C" { 41 #endif 42 43 /* 44 * Argument vectors for the various flavors of msgsys(). 45 */ 46 47 #define MSGGET 0 48 #define MSGCTL 1 49 #define MSGRCV 2 50 #define MSGSND 3 51 #define MSGIDS 4 52 #define MSGSNAP 5 53 54 #if defined(_KERNEL) || defined(_KMEMUSER) 55 56 /* 57 * There is one msg structure for each message in the system. 58 */ 59 struct msg { 60 list_node_t msg_node; /* message list node */ 61 long msg_type; /* message type */ 62 size_t msg_size; /* message text size */ 63 void *msg_addr; /* message text address */ 64 long msg_flags; /* message flags */ 65 long msg_copycnt; /* current # of copyouts on message */ 66 }; 67 68 /* 69 * Per message flags 70 */ 71 #define MSG_RCVCOPY 00001 /* msgrcv is copying out this message */ 72 #define MSG_UNLINKED 00002 /* msg has been unlinked from queue */ 73 74 typedef struct kmsqid { 75 kipc_perm_t msg_perm; /* operation permission struct */ 76 list_t msg_list; /* list of messages on q */ 77 msglen_t msg_cbytes; /* current # bytes on q */ 78 msgqnum_t msg_qnum; /* # of messages on q */ 79 msgqnum_t msg_qmax; /* max # of messages on q */ 80 msglen_t msg_qbytes; /* max # of bytes on q */ 81 pid_t msg_lspid; /* pid of last msgsnd */ 82 pid_t msg_lrpid; /* pid of last msgrcv */ 83 time_t msg_stime; /* last msgsnd time */ 84 time_t msg_rtime; /* last msgrcv time */ 85 time_t msg_ctime; /* last change time */ 86 uint64_t msg_snd_cnt; /* # of waiting senders */ 87 uint64_t msg_rcv_cnt; /* # of waiting receivers */ 88 kcondvar_t msg_snd_cv; 89 kcondvar_t msg_rcv_cv; 90 } kmsqid_t; 91 92 #endif /* _KERNEL */ 93 94 #if defined(_SYSCALL32) 95 /* 96 * LP64 view of the ILP32 msgbuf structure 97 */ 98 struct ipcmsgbuf32 { 99 int32_t mtype; /* message type */ 100 char mtext[1]; /* message text */ 101 }; 102 103 /* 104 * LP64 view of the ILP32 msgsnap_head and msgsnap_mhead structures 105 */ 106 struct msgsnap_head32 { 107 size32_t msgsnap_size; /* bytes consumed/required in the buffer */ 108 size32_t msgsnap_nmsg; /* number of messages in the buffer */ 109 }; 110 111 struct msgsnap_mhead32 { 112 size32_t msgsnap_mlen; /* number of bytes in message that follows */ 113 int32_t msgsnap_mtype; /* message type */ 114 }; 115 116 /* 117 * LP64 view of the ILP32 msqid_ds structure 118 */ 119 struct msqid_ds32 { 120 struct ipc_perm32 msg_perm; /* operation permission struct */ 121 caddr32_t msg_first; /* ptr to first message on q */ 122 caddr32_t msg_last; /* ptr to last message on q */ 123 uint32_t msg_cbytes; /* current # bytes on q */ 124 uint32_t msg_qnum; /* # of messages on q */ 125 uint32_t msg_qbytes; /* max # of bytes on q */ 126 pid32_t msg_lspid; /* pid of last msgsnd */ 127 pid32_t msg_lrpid; /* pid of last msgrcv */ 128 time32_t msg_stime; /* last msgsnd time */ 129 int32_t msg_pad1; /* reserved for time_t expansion */ 130 time32_t msg_rtime; /* last msgrcv time */ 131 int32_t msg_pad2; /* time_t expansion */ 132 time32_t msg_ctime; /* last change time */ 133 int32_t msg_pad3; /* time expansion */ 134 int16_t msg_cv; 135 int16_t msg_qnum_cv; 136 int32_t msg_pad4[3]; /* reserve area */ 137 }; 138 #endif /* _SYSCALL32 */ 139 140 #ifdef __cplusplus 141 } 142 #endif 143 144 #endif /* _SYS_MSG_IMPL_H */ 145