msg_impl.h revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* 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.
*/
#ifndef _SYS_MSG_IMPL_H
#define _SYS_MSG_IMPL_H
#pragma ident "%Z%%M% %I% %E% SMI"
#include <sys/ipc_impl.h>
#if defined(_KERNEL) || defined(_KMEMUSER)
#include <sys/msg.h>
#include <sys/t_lock.h>
#include <sys/list.h>
#endif
#ifdef __cplusplus
extern "C" {
#endif
/*
* Argument vectors for the various flavors of msgsys().
*/
#define MSGGET 0
#define MSGCTL 1
#define MSGRCV 2
#define MSGSND 3
#define MSGIDS 4
#define MSGSNAP 5
#if defined(_KERNEL) || defined(_KMEMUSER)
/*
* There is one msg structure for each message in the system.
*/
struct msg {
list_node_t msg_node; /* message list node */
long msg_type; /* message type */
size_t msg_size; /* message text size */
void *msg_addr; /* message text address */
long msg_flags; /* message flags */
long msg_copycnt; /* current # of copyouts on message */
};
/*
* Per message flags
*/
#define MSG_RCVCOPY 00001 /* msgrcv is copying out this message */
#define MSG_UNLINKED 00002 /* msg has been unlinked from queue */
typedef struct kmsqid {
kipc_perm_t msg_perm; /* operation permission struct */
list_t msg_list; /* list of messages on q */
msglen_t msg_cbytes; /* current # bytes on q */
msgqnum_t msg_qnum; /* # of messages on q */
msgqnum_t msg_qmax; /* max # of messages on q */
msglen_t msg_qbytes; /* max # of bytes on q */
pid_t msg_lspid; /* pid of last msgsnd */
pid_t msg_lrpid; /* pid of last msgrcv */
time_t msg_stime; /* last msgsnd time */
time_t msg_rtime; /* last msgrcv time */
time_t msg_ctime; /* last change time */
uint64_t msg_snd_cnt; /* # of waiting senders */
uint64_t msg_rcv_cnt; /* # of waiting receivers */
kcondvar_t msg_snd_cv;
kcondvar_t msg_rcv_cv;
} kmsqid_t;
#endif /* _KERNEL */
#if defined(_SYSCALL32)
/*
* LP64 view of the ILP32 msgbuf structure
*/
struct ipcmsgbuf32 {
int32_t mtype; /* message type */
char mtext[1]; /* message text */
};
/*
* LP64 view of the ILP32 msgsnap_head and msgsnap_mhead structures
*/
struct msgsnap_head32 {
size32_t msgsnap_size; /* bytes consumed/required in the buffer */
size32_t msgsnap_nmsg; /* number of messages in the buffer */
};
struct msgsnap_mhead32 {
size32_t msgsnap_mlen; /* number of bytes in message that follows */
int32_t msgsnap_mtype; /* message type */
};
/*
* LP64 view of the ILP32 msqid_ds structure
*/
struct msqid_ds32 {
struct ipc_perm32 msg_perm; /* operation permission struct */
caddr32_t msg_first; /* ptr to first message on q */
caddr32_t msg_last; /* ptr to last message on q */
uint32_t msg_cbytes; /* current # bytes on q */
uint32_t msg_qnum; /* # of messages on q */
uint32_t msg_qbytes; /* max # of bytes on q */
pid32_t msg_lspid; /* pid of last msgsnd */
pid32_t msg_lrpid; /* pid of last msgrcv */
time32_t msg_stime; /* last msgsnd time */
int32_t msg_pad1; /* reserved for time_t expansion */
time32_t msg_rtime; /* last msgrcv time */
int32_t msg_pad2; /* time_t expansion */
time32_t msg_ctime; /* last change time */
int32_t msg_pad3; /* time expansion */
int16_t msg_cv;
int16_t msg_qnum_cv;
int32_t msg_pad4[3]; /* reserve area */
};
#endif /* _SYSCALL32 */
#ifdef __cplusplus
}
#endif
#endif /* _SYS_MSG_IMPL_H */