#ifndef _LINUX_MSG_H
|
#define _LINUX_MSG_H
|
|
#include <linux/list.h>
|
#include <uapi/linux/msg.h>
|
|
/* one msg_msg structure for each message */
|
struct msg_msg {
|
struct list_head m_list;
|
long m_type;
|
size_t m_ts; /* message text size */
|
struct msg_msgseg *next;
|
void *security;
|
/* the actual message follows immediately */
|
};
|
|
/* one msq_queue structure for each present queue on the system */
|
struct msg_queue {
|
struct kern_ipc_perm q_perm;
|
time_t q_stime; /* last msgsnd time */
|
time_t q_rtime; /* last msgrcv time */
|
time_t q_ctime; /* last change time */
|
unsigned long q_cbytes; /* current number of bytes on queue */
|
unsigned long q_qnum; /* number of messages in queue */
|
unsigned long q_qbytes; /* max number of bytes on queue */
|
pid_t q_lspid; /* pid of last msgsnd */
|
pid_t q_lrpid; /* last receive pid */
|
|
struct list_head q_messages;
|
struct list_head q_receivers;
|
struct list_head q_senders;
|
};
|
|
/* Helper routines for sys_msgsnd and sys_msgrcv */
|
extern long do_msgsnd(int msqid, long mtype, void __user *mtext,
|
size_t msgsz, int msgflg);
|
extern long do_msgrcv(int msqid, void __user *buf, size_t bufsz, long msgtyp,
|
int msgflg,
|
long (*msg_fill)(void __user *, struct msg_msg *,
|
size_t));
|
|
#endif /* _LINUX_MSG_H */
|
