[linux.git] / include / linux / msg.h

#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 */
Commit	Line	Data
1da177e4 LT	1	#ifndef _LINUX_MSG_H
	2	#define _LINUX_MSG_H
	3
77597ad6	4	#include <linux/list.h>
607ca46e	5	#include <uapi/linux/msg.h>
1da177e4 LT	6
	7	/* one msg_msg structure for each message */
	8	struct msg_msg {
4e9b45a1 MK	9	struct list_head m_list;
	10	long m_type;
	11	size_t m_ts; /* message text size */
239521f3	12	struct msg_msgseg *next;
1da177e4 LT	13	void *security;
	14	/* the actual message follows immediately */
	15	};
	16
	17	/* one msq_queue structure for each present queue on the system */
	18	struct msg_queue {
	19	struct kern_ipc_perm q_perm;
	20	time_t q_stime; /* last msgsnd time */
	21	time_t q_rtime; /* last msgrcv time */
	22	time_t q_ctime; /* last change time */
	23	unsigned long q_cbytes; /* current number of bytes on queue */
	24	unsigned long q_qnum; /* number of messages in queue */
	25	unsigned long q_qbytes; /* max number of bytes on queue */
	26	pid_t q_lspid; /* pid of last msgsnd */
	27	pid_t q_lrpid; /* last receive pid */
	28
	29	struct list_head q_messages;
	30	struct list_head q_receivers;
	31	struct list_head q_senders;
	32	};
	33
651971cb	34	/* Helper routines for sys_msgsnd and sys_msgrcv */
	35	extern long do_msgsnd(int msqid, long mtype, void __user *mtext,
	36	size_t msgsz, int msgflg);
f9dd87f4 SK	37	extern long do_msgrcv(int msqid, void __user *buf, size_t bufsz, long msgtyp,
f9dd87f4 SK	38	int msgflg,
3a665531 SK	39	long (msg_fill)(void __user , struct msg_msg *,
3a665531 SK	40	size_t));
651971cb	41
1da177e4	42	#endif /* _LINUX_MSG_H */