diff --git a/winsup/cygwin/dcrt0.cc b/winsup/cygwin/dcrt0.cc
index ff433128a..fa0f4dd86 100644
--- a/winsup/cygwin/dcrt0.cc
+++ b/winsup/cygwin/dcrt0.cc
@@ -666,7 +666,7 @@ dll_crt0_1 ()
 				  //  should be blocked.
 
   if (mypid)
-    set_myself ((pid_t) mypid, NULL);
+    set_myself ((pid_t) mypid);
 
   (void) SetErrorMode (SEM_FAILCRITICALERRORS);
 
@@ -834,7 +834,6 @@ _dll_crt0 ()
   DuplicateHandle (hMainProc, GetCurrentThread (), hMainProc,
 		   &hMainThread, 0, FALSE, DUPLICATE_SAME_ACCESS);
 
-  HANDLE h;
   GetStartupInfo (&si);
   if (si.cbReserved2 >= EXEC_MAGIC_SIZE &&
       memcmp (ciresrv->zero, zeros, sizeof (zeros)) == 0)
@@ -869,14 +868,6 @@ _dll_crt0 ()
 		  case PROC_EXEC:
 		  case PROC_SPAWN:
 		    info = si.lpReserved2 + ciresrv->cb;
-		    if (child_proc_info->myself_pinfo &&
-			DuplicateHandle (hMainProc, child_proc_info->myself_pinfo,
-					 hMainProc, &h, 0, 0,
-					 DUPLICATE_SAME_ACCESS | DUPLICATE_CLOSE_SOURCE))
-		      {
-			set_myself (mypid, h);
-			mypid = 0;
-		      }
 		    break;
 		  case PROC_FORK:
 		  case PROC_FORK1:
diff --git a/winsup/cygwin/pinfo.cc b/winsup/cygwin/pinfo.cc
index 0d52ec9f9..347015be4 100644
--- a/winsup/cygwin/pinfo.cc
+++ b/winsup/cygwin/pinfo.cc
@@ -30,17 +30,17 @@ static pinfo NO_COPY myself_identity ((_pinfo *)&pinfo_dummy);
    This is done once when the dll is first loaded.  */
 
 void __stdcall
-set_myself (pid_t pid, HANDLE h)
+set_myself (pid_t pid)
 {
   DWORD winpid = GetCurrentProcessId ();
   if (pid == 1)
     pid = cygwin_pid (winpid);
-  myself.init (pid, 1, h);
+  myself.init (pid, 1);
   myself->dwProcessId = winpid;
   myself->process_state |= PID_IN_USE;
   myself->start_time = time (NULL); /* Register our starting time. */
   pid_t myself_cyg_pid = cygwin_pid (myself->dwProcessId);
-  if (pid != myself_cyg_pid && parent_alive)
+  if (pid != myself_cyg_pid)
     myself_identity.init (myself_cyg_pid, PID_EXECED);
 
   char buf[30];
@@ -95,7 +95,7 @@ pinfo_init (LPBYTE info)
     {
       /* Invent our own pid.  */
 
-      set_myself (1, NULL);
+      set_myself (1);
       myself->ppid = 1;
       myself->pgid = myself->sid = myself->pid;
       myself->ctty = -1;
@@ -197,7 +197,7 @@ _pinfo::record_death ()
 }
 
 void
-pinfo::init (pid_t n, DWORD create, HANDLE in_h)
+pinfo::init (pid_t n, DWORD create)
 {
   if (n == myself->pid)
     {
@@ -217,12 +217,7 @@ pinfo::init (pid_t n, DWORD create, HANDLE in_h)
   else
     mapsize = sizeof (_pinfo);
 
-  if (in_h)
-    {
-      h = in_h;
-      created = 0;
-    }
-  else if (!create)
+  if (!create)
     {
       /* CGF FIXME -- deal with inheritance after an exec */
       h = OpenFileMappingA (FILE_MAP_READ | FILE_MAP_WRITE, FALSE, mapname);
@@ -230,7 +225,7 @@ pinfo::init (pid_t n, DWORD create, HANDLE in_h)
     }
   else
     {
-      h = CreateFileMapping ((HANDLE) 0xffffffff, &sec_all_nih,
+      h = CreateFileMapping ((HANDLE) 0xffffffff, &sec_none_nih,
 			      PAGE_READWRITE, 0, mapsize, mapname);
       created = h && GetLastError () != ERROR_ALREADY_EXISTS;
     }
@@ -243,13 +238,11 @@ pinfo::init (pid_t n, DWORD create, HANDLE in_h)
       return;
     }
 
-  ProtectHandle1 (h, pinfo_shared_handle);
   child = (_pinfo *) MapViewOfFile (h, FILE_MAP_READ | FILE_MAP_WRITE, 0, 0, 0);
 
   if (child->process_state & PID_EXECED)
     {
       pid_t realpid = child->pid;
-      debug_printf ("execed process windows pid %d, cygwin pid %d", n, realpid);
       release ();
       if (realpid == n)
 	api_fatal ("retrieval of execed process info for pid %d failed due to recursion.", n);
diff --git a/winsup/cygwin/pinfo.h b/winsup/cygwin/pinfo.h
index f84659813..b8ee9140b 100644
--- a/winsup/cygwin/pinfo.h
+++ b/winsup/cygwin/pinfo.h
@@ -117,7 +117,7 @@ class pinfo
   _pinfo *child;
   int destroy;
 public:
-  void init (pid_t n, DWORD create = 0, HANDLE h = NULL);
+  void init (pid_t n, DWORD create = 0);
   pinfo () {}
   pinfo (_pinfo *x): child (x) {}
   pinfo (pid_t n) {init (n);}
@@ -127,7 +127,7 @@ public:
     if (h)
       {
 	UnmapViewOfFile (child);
-	ForceCloseHandle1 (h, pinfo_shared_handle);
+	CloseHandle (h);
 	h = NULL;
       }
   }
@@ -145,9 +145,7 @@ public:
   int operator == (char *x) const {return (char *) child == x;}
   _pinfo *operator * () const {return child;}
   operator _pinfo * () const {return child;}
-  // operator bool () const {return (int) h;}
   void remember () {destroy = 0; proc_subproc (PROC_ADDCHILD, (DWORD) this);}
-  HANDLE shared_handle () {return h;}
 };
 
 #define ISSTATE(p, f)	(!!((p)->process_state & f))
@@ -170,7 +168,5 @@ cygwin_pid (pid_t pid)
 {
   return (pid_t) (os_being_run == winNT) ? pid : -(int) pid;
 }
-
-void __stdcall pinfo_init (BYTE *);
-void __stdcall set_myself (pid_t pid, HANDLE h = NULL);
+void __stdcall pinfo_init (PBYTE);
 extern pinfo myself;
diff --git a/winsup/cygwin/shared.h b/winsup/cygwin/shared.h
index 1671d0dba..2a8e9a6e1 100644
--- a/winsup/cygwin/shared.h
+++ b/winsup/cygwin/shared.h
@@ -67,7 +67,6 @@ public:
   HANDLE shared_h;
   HANDLE console_h;
   HANDLE parent_alive;	// handle of thread used to track children
-  HANDLE myself_pinfo;
 };
 
 class child_info_fork: public child_info
diff --git a/winsup/cygwin/spawn.cc b/winsup/cygwin/spawn.cc
index b43746cae..940f8d170 100644
--- a/winsup/cygwin/spawn.cc
+++ b/winsup/cygwin/spawn.cc
@@ -494,10 +494,6 @@ skip_arg_parsing:
     }
 
   init_child_info (chtype, ciresrv, (mode == _P_OVERLAY) ? myself->pid : 1, spr);
-  if (mode != _P_OVERLAY ||
-      !DuplicateHandle (hMainProc, myself.shared_handle (), hMainProc, &ciresrv->myself_pinfo, 0,
-		       TRUE, DUPLICATE_SAME_ACCESS))
-   ciresrv->myself_pinfo = NULL;
 
   LPBYTE resrv = si.lpReserved2 + sizeof *ciresrv;
 # undef ciresrv
diff --git a/winsup/cygwin/winsup.h b/winsup/cygwin/winsup.h
index 56126692a..be151e75b 100644
--- a/winsup/cygwin/winsup.h
+++ b/winsup/cygwin/winsup.h
@@ -283,6 +283,7 @@ long __stdcall to_time_t (FILETIME * ptr);
 int __stdcall lock_pinfo_for_update (DWORD timeout);
 #endif
 void unlock_pinfo (void);
+void _stdcall set_myself (pid_t pid);
 
 /* Retrieve a security descriptor that allows all access */
 SECURITY_DESCRIPTOR *__stdcall get_null_sd (void);