1 files changed, 92 insertions, 0 deletions
diff --git a/winsup/cygwin/include/cygwin/msg.h b/winsup/cygwin/include/cygwin/msg.h
new file mode 100644
index 000000000..14e89f556
--- /dev/null
+++ b/winsup/cygwin/include/cygwin/msg.h
@@ -0,0 +1,92 @@
+/* sys/msg.h
+
+   Copyright 2002 Red Hat Inc.
+   Written by Conrad Scott <conrad.scott@dsl.pipex.com>
+
+This file is part of Cygwin.
+
+This software is a copyrighted work licensed under the terms of the
+Cygwin license.  Please consult the file "CYGWIN_LICENSE" for
+details. */
+
+#ifndef _SYS_MSG_H
+#define _SYS_MSG_H
+
+#include <cygwin/ipc.h>
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+/* Message operation flags:
+ */
+#define MSG_NOERROR 0x01	/* No error if big message. */
+
+/* Command definitions for the semctl () function:
+ */
+#define MSG_STAT   0x2000	/* For ipcs(8) */
+#define MSG_INFO   0x2001	/* For ipcs(8) */
+
+/* Used for the number of messages in the message queue.
+ */
+typedef long int msgqnum_t;
+
+/* Used for the number of bytes allowed in a message queue.
+ */
+typedef long int msglen_t;
+
+struct msqid_ds
+{
+  struct ipc_perm msg_perm;	/* Operation permission structure. */
+  msglen_t        msg_cbytes;	/* Number of bytes currently on queue. */
+  msgqnum_t       msg_qnum;	/* Number of messages currently on queue. */
+  msglen_t        msg_qbytes;	/* Maximum number of bytes allowed on queue. */
+  pid_t           msg_lspid;	/* Process ID of last msgsnd (). */
+  pid_t           msg_lrpid;	/* Process ID of last msgrcv (). */
+  timestruc_t     msg_stim;	/* Time of last msgsnd (). */
+  timestruc_t     msg_rtim;	/* Time of last msgrcv (). */
+  timestruc_t     msg_ctim;	/* Time of last change. */
+  long            msg_spare4[2];
+};
+
+#define msg_stime msg_stim.tv_sec
+#define msg_rtime msg_rtim.tv_sec
+#define msg_ctime msg_ctim.tv_sec
+
+/* Buffer type for msgctl (IPC_INFO, ...) as used by ipcs(8).
+ */
+struct msginfo
+{
+  unsigned long msgpool;	/* Maximum number of message bytes,
+				   system wide. */
+  unsigned long msgmax;		/* Maximum number of bytes per
+				   message. */
+  unsigned long msgmnb;		/* Maximum number of bytes on any one
+				   message queue. */
+  unsigned long msgmni;		/* Maximum number of message queues,
+				   system wide. */
+  unsigned long msgtql;		/* Maximum number of messages, system
+				   wide. */
+  unsigned long msg_spare[4];
+};
+
+/* Buffer type for msgctl (MSG_INFO, ...) as used by ipcs(8).
+ */
+struct msg_info
+{
+  unsigned long msg_ids;	/* Number of allocated queues. */
+  unsigned long msg_num;	/* Number of messages, system wide. */
+  unsigned long msg_tot;	/* Size in bytes of messages, system wide. */
+};
+
+int     msgctl (int msqid, int cmd, struct msqid_ds *buf);
+int     msgget (key_t key, int msgflg);
+ssize_t msgrcv (int msqid, void *msgp, size_t msgsz, long msgtyp, int msgflg);
+int     msgsnd (int msqid, const void *msgp, size_t msgsz, int msgflg);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _SYS_MSG_H */