winsup/cygwin/cygserver_ipc.h

   1 /* cygserver_ipc.h
   2
   3    Copyright 2002, 2003, 2004, 2012 Red Hat, Inc.
   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
  14 /*
  15  * Datastructure which is part of any IPC input parameter block.
  16  */
  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;
  25   __uid32_t uid;
  26   __gid32_t gid;
  27   int gidcnt;
  28   __gid32_t *gidlist;
  29   bool is_admin;
  30   struct vmspace *p_vmspace;
  31   HANDLE signal_arrived;
  32 };
  33
  34 #ifdef __INSIDE_CYGWIN__
  35 #include "sigproc.h"
  36 inline void
  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;
  46   blk.signal_arrived = _my_tls.signal_arrived;
  47 }
  48 #endif /* __INSIDE_CYGWIN__ */
  49
  50 #ifndef __INSIDE_CYGWIN__
  51 class ipc_retval {
  52 private:
  53   union {
  54     int i;
  55     unsigned int u;
  56     vm_offset_t off;
  57     vm_object_t obj;
  58   };
  59
  60 public:
  61   ipc_retval (int ni) { i = ni; }
  62
  63   operator int () const { return i; }
  64   int operator = (int ni) { return i = ni; }
  65
  66   operator unsigned int () const { return u; }
  67   unsigned int operator = (unsigned int nu) { return u = nu; }
  68
  69   operator vm_offset_t () const { return off; }
  70   vm_offset_t operator = (vm_offset_t noff) { return off = noff; }
  71
  72   operator vm_object_t () const { return obj; }
  73   vm_object_t operator = (vm_object_t nobj) { return obj = nobj; }
  74 };
  75
  76 struct thread {
  77   class process *client;
  78   proc *ipcblk;
  79   ipc_retval td_retval[2];
  80 };
  81 #define td_proc ipcblk
  82 #define p_pid cygpid
  83 #endif
  84
  85 #endif /* __CYGSERVER_IPC_H__ */