* cygserver.h (client_request::request_code_t): Add

CYGSERVER_REQUEST_MSG and CYGSERVER_REQUEST_SEM.
	(admininstrator_group_sid): Add extern declaration.
	* cygserver_ipc.h: Rewrite.
	* cygserver_msg.h: New file.
	* cygserver_sem.h: New file.
	* cygserver_shm.h: More or less rewrite.
	* cygwin.din: Add msgctl, msgget, msgrcv, msgsnd, semctl, semget and
	semop.
	* msg.cc: Rewrite.
	* safe_memory.h: Remove.
	* sem.cc: Rewrite.
	* shm.cc: Rewrite.
	* include/cygwin/ipc.h: Use appropriate guard.
	(struct ipc_perm): Add seq.
	(IPCID_TO_IX): New define from BSD.
	(IPCID_TO_SEQ): Ditto.
	(IXSEQ_TO_IPCID): Ditto.
	(IPC_R): Ditto.
	(IPC_W): Ditto.
	(IPC_M): Ditto.
	* include/cygwin/msg.h: Use appropriate guard. #ifdef _KERNEL all stuff
	not explicitely defined by SUSv3. Use signed types in structs to match
	types used in BSD.
	(msgqnum_t): Define unsigned.
	(msglen_t): Ditto.
	(struct msqid_ds): Add msg_first and msg_last.
	(struct msginfo): Remove msgpool. Add msgssz and msgseg.
	* include/cygwin/sem.h: Use appropriate guard. #ifdef _KERNEL all stuff
	not explicitely defined by SUSv3. Use signed types in structs to match
	types used in BSD.
	(SEM_UNDO): Define appropriately.
	(struct semid_ds): Add sem_base.
	(struct seminfo): Add semmap and semusz.
	(SEM_A): New define from BSD.
	(SEM_R): Ditto.
	(SEM_ALLOC): Ditto.
	(union semun): Define.
	* include/cygwin/shm.h: Use appropriate guard. #ifdef _KERNEL all stuff
	not explicitely defined by SUSv3. Use signed types in structs to match
	types used in BSD.
	(SHMLBA): Define using cygwin_internal(CW_GET_SHMLBA) call.
	(struct shmid_ds): Add shm_internal.
	(struct shm_info): Rename shm_ids to used_ids as in BSD.  Add define
	for shm_ids.
	* include/cygwin/sysproto.h: New file.
	* include/cygwin/version.h: Bump API minor number.
	* include/sys/ipc.h: New file.
	* include/sys/msg.h: New file.
	* include/sys/queue.h: New file from BSD.
	* include/sys/sem.h: New file.
	* include/sys/shm.h: New file.
	* include/sys/sysproto.h: New file.

winsup/cygwin/cygserver_msg.h

@@ -0,0 +1,91 @@
+/* cygserver_msg.h: Single unix specification IPC interface for Cygwin.
+
+   Copyright 2003 Red Hat, Inc.
+
+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 __CYGSERVER_MSG_H__
+#define __CYGSERVER_MSG_H__
+
+#include <sys/types.h>
+#include <sys/sysproto.h>
+#ifndef _KERNEL
+#define _KERNEL 1
+#endif
+#include <cygwin/msg.h>
+
+#include "cygserver.h"
+#include "cygserver_ipc.h"
+
+#ifndef __INSIDE_CYGWIN__
+class transport_layer_base;
+class process_cache;
+#endif
+
+class client_request_msg : public client_request
+{
+  friend class client_request;
+
+public:
+  enum msgop_t
+    {
+      MSGOP_msgctl,
+      MSGOP_msgget,
+      MSGOP_msgrcv,
+      MSGOP_msgsnd
+    };
+
+private:
+  union
+  {
+    struct
+    {
+      msgop_t msgop;
+      proc ipcblk;
+      union
+      {
+        struct msgctl_args ctlargs;
+	struct msgget_args getargs;
+	struct msgrcv_args rcvargs;
+	struct msgsnd_args sndargs;
+      };
+    } in;
+
+    union {
+      int ret;
+      ssize_t rcv;
+    } out;
+  } _parameters;
+
+#ifndef __INSIDE_CYGWIN__
+  client_request_msg ();
+  virtual void serve (transport_layer_base *, process_cache *);
+#endif
+
+public:
+
+#ifdef __INSIDE_CYGWIN__
+  client_request_msg (int, int, struct msqid_ds *);	// msgctl
+  client_request_msg (key_t, int);			// msgget
+  client_request_msg (int, void *, size_t, long, int);	// msgrcv
+  client_request_msg (int, const void *, size_t, int);	// msgsnd
+#endif
+
+  int retval (void) const { return _parameters.out.ret; }
+  ssize_t rcvval (void) const { return _parameters.out.rcv; }
+};
+
+#ifndef __INSIDE_CYGWIN__
+int msginit (void);
+int msgunload (void);
+int msgctl (struct thread *, struct msgctl_args *);
+int msgget (struct thread *, struct msgget_args *);
+int msgsnd (struct thread *, struct msgsnd_args *);
+int msgrcv (struct thread *, struct msgrcv_args *);
+#endif
+
+#endif /* __CYGSERVER_MSG_H__ */