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/* cygserver_msg.h: Single unix specification IPC interface for Cygwin.
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 () const { return msglen () ? _parameters.out.ret : -1; }
ssize_t rcvval () const { return _parameters.out.rcv; }
};
#ifndef __INSIDE_CYGWIN__
int msginit ();
int msgunload ();
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__ */
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