[newlib-cygwin.git] / winsup / cygwin / cygserver_ipc.h

/* cygserver_ipc.h

   Copyright 2002, 2003, 2004, 2012, 2013 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_IPC_H__
#define __CYGSERVER_IPC_H__

/*
 * Datastructure which is part of any IPC input parameter block.
 */
struct vmspace {
  void *vm_map;			/* UNUSED */
  struct shmmap_state *vm_shm;
};

struct proc {
  pid_t cygpid;
  DWORD winpid;
  uid_t uid;
  gid_t gid;
  int gidcnt;
  gid_t *gidlist;
  bool is_admin;
  struct vmspace *p_vmspace;
  HANDLE signal_arrived;
};

#ifdef __INSIDE_CYGWIN__
#include "sigproc.h"
extern inline void
ipc_set_proc_info (proc &blk)
{
  blk.cygpid = getpid ();
  blk.winpid = GetCurrentProcessId ();
  blk.uid = geteuid32 ();
  blk.gid = getegid32 ();
  blk.gidcnt = 0;
  blk.gidlist = NULL;
  blk.is_admin = false;
  _my_tls.set_signal_arrived (true, blk.signal_arrived);
}
#endif /* __INSIDE_CYGWIN__ */

#ifndef __INSIDE_CYGWIN__
class ipc_retval {
private:
  union {
    int i;
    ssize_t ssz;
    size_t sz;
    vm_offset_t off;
    vm_object_t obj;
  };

public:
  ipc_retval (int ni) { i = ni; }

  operator int () const { return i; }
  int operator = (int ni) { return i = ni; }

#ifndef __x86_64__
  /* On x86_64: size_t == vm_offset_t == unsigned long */
  operator size_t () const { return sz; }
  size_t operator = (size_t nsz) { return sz = nsz; }
#else
  /* On i686: ssize_t == long == int */
  operator ssize_t () const { return ssz; }
  ssize_t operator = (ssize_t nssz) { return ssz = nssz; }
#endif

  operator vm_offset_t () const { return off; }
  vm_offset_t operator = (vm_offset_t noff) { return off = noff; }

  operator vm_object_t () const { return obj; }
  vm_object_t operator = (vm_object_t nobj) { return obj = nobj; }
};

struct thread {
  class process *client;
  proc *ipcblk;
  ipc_retval td_retval[2];
};
#define td_proc ipcblk
#define p_pid cygpid
#endif

#endif /* __CYGSERVER_IPC_H__ */
Commit	Line	Data
e217832c CV	1	/* cygserver_ipc.h
e217832c CV	2
61522196	3	Copyright 2002, 2003, 2004, 2012, 2013 Red Hat, Inc.
e217832c CV	4
	5	This file is part of Cygwin.
	6
	7	This software is a copyrighted work licensed under the terms of the
	8	Cygwin license. Please consult the file "CYGWIN_LICENSE" for
	9	details. */
	10
	11	#ifndef __CYGSERVER_IPC_H__
	12	#define __CYGSERVER_IPC_H__
	13
e217832c	14	/*
a6df500f	15	* Datastructure which is part of any IPC input parameter block.
e217832c	16	*/
a6df500f CV	17	struct vmspace {
	18	void vm_map; / UNUSED */
	19	struct shmmap_state *vm_shm;
	20	};
	21
	22	struct proc {
	23	pid_t cygpid;
	24	DWORD winpid;
61522196 CV	25	uid_t uid;
61522196 CV	26	gid_t gid;
a6df500f	27	int gidcnt;
61522196	28	gid_t *gidlist;
a6df500f CV	29	bool is_admin;
a6df500f CV	30	struct vmspace *p_vmspace;
2a566ac3	31	HANDLE signal_arrived;
a6df500f CV	32	};
	33
	34	#ifdef __INSIDE_CYGWIN__
33a6952b	35	#include "sigproc.h"
c3a46349	36	extern inline void
a6df500f CV	37	ipc_set_proc_info (proc &blk)
	38	{
	39	blk.cygpid = getpid ();
	40	blk.winpid = GetCurrentProcessId ();
	41	blk.uid = geteuid32 ();
	42	blk.gid = getegid32 ();
	43	blk.gidcnt = 0;
	44	blk.gidlist = NULL;
	45	blk.is_admin = false;
962f9a2c	46	_my_tls.set_signal_arrived (true, blk.signal_arrived);
a6df500f CV	47	}
	48	#endif /* __INSIDE_CYGWIN__ */
	49
	50	#ifndef __INSIDE_CYGWIN__
	51	class ipc_retval {
	52	private:
	53	union {
	54	int i;
61522196 CV	55	ssize_t ssz;
61522196 CV	56	size_t sz;
a6df500f CV	57	vm_offset_t off;
a6df500f CV	58	vm_object_t obj;
e217832c CV	59	};
e217832c CV	60
a6df500f CV	61	public:
a6df500f CV	62	ipc_retval (int ni) { i = ni; }
e217832c	63
a6df500f CV	64	operator int () const { return i; }
a6df500f CV	65	int operator = (int ni) { return i = ni; }
e217832c	66
61522196 CV	67	#ifndef __x86_64__
	68	/* On x86_64: size_t == vm_offset_t == unsigned long */
	69	operator size_t () const { return sz; }
	70	size_t operator = (size_t nsz) { return sz = nsz; }
	71	#else
	72	/* On i686: ssize_t == long == int */
	73	operator ssize_t () const { return ssz; }
	74	ssize_t operator = (ssize_t nssz) { return ssz = nssz; }
	75	#endif
e217832c	76
a6df500f CV	77	operator vm_offset_t () const { return off; }
a6df500f CV	78	vm_offset_t operator = (vm_offset_t noff) { return off = noff; }
e217832c	79
a6df500f CV	80	operator vm_object_t () const { return obj; }
	81	vm_object_t operator = (vm_object_t nobj) { return obj = nobj; }
	82	};
e217832c	83
a6df500f CV	84	struct thread {
	85	class process *client;
	86	proc *ipcblk;
	87	ipc_retval td_retval[2];
	88	};
	89	#define td_proc ipcblk
	90	#define p_pid cygpid
	91	#endif
e217832c CV	92
e217832c CV	93	#endif /* __CYGSERVER_IPC_H__ */