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-rw-r--r--include/linux/msg.h42
1 files changed, 42 insertions, 0 deletions
diff --git a/include/linux/msg.h b/include/linux/msg.h
new file mode 100644
index 000000000..f3f302f9c
--- /dev/null
+++ b/include/linux/msg.h
@@ -0,0 +1,42 @@
+#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 */