99 lines
2.2 KiB
C++
99 lines
2.2 KiB
C++
/* cygserver_shm.h: Single unix specification IPC interface for Cygwin.
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Copyright 2001, 2002, 2003, 2005, 2008 Red Hat, Inc.
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This file is part of Cygwin.
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This software is a copyrighted work licensed under the terms of the
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Cygwin license. Please consult the file "CYGWIN_LICENSE" for
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details. */
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#ifndef __CYGSERVER_SHM_H__
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#define __CYGSERVER_SHM_H__
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#include <sys/types.h>
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#include <sys/sysproto.h>
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#ifndef _KERNEL
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#define _KERNEL 1
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#endif
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#include <cygwin/shm.h>
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#include "cygserver.h"
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#include "cygserver_ipc.h"
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#ifndef __INSIDE_CYGWIN__
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class transport_layer_base;
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class process_cache;
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#endif
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class client_request_shm : public client_request
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{
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friend class client_request;
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public:
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enum shmop_t
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{
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SHMOP_shmat,
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SHMOP_shmctl,
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SHMOP_shmdt,
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SHMOP_shmget,
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SHMOP_shmfork /* Called on fixup_after_fork */
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};
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private:
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union
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{
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struct
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{
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shmop_t shmop;
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proc ipcblk;
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struct shmat_args atargs;
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struct shmctl_args ctlargs;
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struct shmdt_args dtargs;
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struct shmget_args getargs;
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struct proc forkargs;
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} in;
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struct {
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union {
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int ret;
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vm_offset_t ptr;
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};
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vm_object_t obj;
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} out;
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} _parameters;
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#ifndef __INSIDE_CYGWIN__
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client_request_shm ();
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virtual void serve (transport_layer_base *, process_cache *);
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#endif
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public:
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#ifdef __INSIDE_CYGWIN__
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client_request_shm (int, const void *, int); // shmat
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client_request_shm (int, int, struct shmid_ds *); // shmctl
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client_request_shm (const void *); // shmdt
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client_request_shm (key_t, size_t, int); // shmget
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client_request_shm (proc *); // shmfork
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#endif
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int retval () const { return msglen () ? _parameters.out.ret : -1; }
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void *ptrval () const { return (void *)_parameters.out.ptr; }
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vm_object_t objval () const { return _parameters.out.obj; }
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};
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#ifndef __INSIDE_CYGWIN__
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void shminit ();
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int shmunload ();
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void shmexit_myhook (struct vmspace *vm);
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int cygwin_shmfork_myhook (struct thread *, struct proc *);
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int shmat (struct thread *, struct shmat_args *);
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int shmctl (struct thread *, struct shmctl_args *);
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int shmdt (struct thread *, struct shmdt_args *);
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int shmget (struct thread *, struct shmget_args *);
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#endif
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#endif /* __CYGSERVER_SHM_H__ */
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