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/* cygserver_sem.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_SEM_H__
#define __CYGSERVER_SEM_H__
#include <sys/types.h>
#include <sys/sysproto.h>
#ifndef _KERNEL
#define _KERNEL 1
#endif
#include <cygwin/sem.h>
#include "cygserver.h"
#include "cygserver_ipc.h"
#ifndef __INSIDE_CYGWIN__
class transport_layer_base;
class process_cache;
#endif
class client_request_sem : public client_request
{
friend class client_request;
public:
enum semop_t
{
SEMOP_semctl,
SEMOP_semget,
SEMOP_semop
};
private:
union
{
struct
{
semop_t semop;
proc ipcblk;
union
{
struct semctl_args ctlargs;
struct semget_args getargs;
struct semop_args opargs;
};
} in;
union {
int ret;
} out;
} _parameters;
#ifndef __INSIDE_CYGWIN__
client_request_sem ();
virtual void serve (transport_layer_base *, process_cache *);
#endif
public:
#ifdef __INSIDE_CYGWIN__
client_request_sem (int, int, int, union semun *); // semctl
client_request_sem (key_t, int, int); // semget
client_request_sem (int, struct sembuf *, size_t); // semop
#endif
int retval () const { return msglen () ? _parameters.out.ret : -1; }
};
#ifndef __INSIDE_CYGWIN__
int seminit ();
int semunload ();
void semexit_myhook(void *arg, struct proc *p);
int semctl (struct thread *, struct semctl_args *);
int semget (struct thread *, struct semget_args *);
int semop (struct thread *, struct semop_args *);
#endif
#endif /* __CYGSERVER_SEM_H__ */
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