* Makefile.in (DLL_OFILES): Add kernel32.o.

* autoload.cc (WSACloseEvent): Remove.
	(WSACreateEvent): Remove.
	* cygheap.cc (cygheap_init): Drop initializing shared_prefix.
	* cygheap.h (struct init_cygheap): Drop shared_prefix and
	shared_prefix_buf members.
	* fhandler_socket.cc (sock_shared_name): New static function.
	(search_wsa_event_slot): Convert name buffers to WCHAR.  Call
	NtCreateMutant/NtOpenMutant to create mutexes in session local
	namespace.
	(fhandler_socket::init_events): Ditto.  Fix debug output.
	(fhandler_socket::release_events): Close mutexes using NtClose.
	(fhandler_socket::dup): Ditto.
	* kernel32.cc: New file, implementing Win32 calls in a Cygwin-specific
	way.
	* mmap.cc (MapView): Make static.
	* ntdll.h: Fix status code sorting.
	(STATUS_OBJECT_NAME_EXISTS): Define.
	(SEMAPHORE_QUERY_STATE): Define.
	(CYG_SHARED_DIR_ACCESS): Define.
	(CYG_MUTANT_ACCESS): Define.
	(CYG_EVENT_ACCESS): Define.
	(CYG_SEMAPHORE_ACCESS): Define.
	(enum _PROCESSINFOCLASS): Define ProcessSessionInformation.
	(struct _PROCESS_SESSION_INFORMATION): Define.
	(NtCreateSemaphore): Declare.
	(NtOpenSemaphore): Declare.
	* flock.cc: Use CYG_xxx_ACCESS access masks where appropriate.
	* posix_ipc.cc (ipc_mutex_init): Use native functions to create mutex.
	Create in cygwin-shared subdir.
	(ipc_cond_init): Ditto for event.
	(ipc_mutex_close): Use NtClose.
	(ipc_cond_close): Ditto.
	(mq_open): Drop "cyg" prefix from mqh_uname.
	* shared.cc (CYG_SHARED_DIR_ACCESS): Drop definition here.
	(_cygwin_testing): Declare extern on file level.
	(get_shared_parent_dir): Change name of shared directory.  Add name
	to api_fatal output.
	(get_session_parent_dir): New function.
	(shared_name): Simplify.
	(shared_info::initialize): Call get_session_parent_dir.
	* shared_info.h (get_session_parent_dir): Declare.
	* smallprint.cc (__small_vswprintf): Fix bug in multibyte string
	conversion.
	* thread.cc (semaphore::semaphore): Align semaphore name to object
	names in posix IPC functions.
	* include/cygwin/version.h (CYGWIN_VERSION_SHARED_DATA): Bump.

winsup/cygwin/shared.cc

@@ -32,13 +32,7 @@ HANDLE NO_COPY cygwin_user_h;
 
 /* This function returns a handle to the top-level directory in the global
    NT namespace used to implement global objects including shared memory. */
-
-#define CYG_SHARED_DIR_ACCESS	(DIRECTORY_QUERY \
-                                 | DIRECTORY_TRAVERSE \
-                                 | DIRECTORY_CREATE_SUBDIRECTORY \
-                                 | DIRECTORY_CREATE_OBJECT \
-                                 | READ_CONTROL)
-
+extern bool _cygwin_testing;
 
 HANDLE
 get_shared_parent_dir ()
@@ -47,15 +41,53 @@ get_shared_parent_dir ()
   UNICODE_STRING uname;
   OBJECT_ATTRIBUTES attr;
   NTSTATUS status;
-  
+
   if (!dir)
     {
-      RtlInitUnicodeString (&uname, L"\\BaseNamedObjects\\cygwin-shared");
+      WCHAR bnoname[MAX_PATH];
+      __small_swprintf (bnoname, L"\\BaseNamedObjects\\%s%s",
+			cygwin_version.shared_id,
+			_cygwin_testing ? cygwin_version.dll_build_date : "");
+      RtlInitUnicodeString (&uname, bnoname);
       InitializeObjectAttributes (&attr, &uname, OBJ_INHERIT | OBJ_OPENIF,
                                   NULL, everyone_sd (CYG_SHARED_DIR_ACCESS));
       status = NtCreateDirectoryObject (&dir, CYG_SHARED_DIR_ACCESS, &attr);
       if (!NT_SUCCESS (status))
-        api_fatal ("NtCreateDirectoryObject(parent): %p", status);
+        api_fatal ("NtCreateDirectoryObject(%S): %p", &uname, status);
+    }
+  return dir;
+} 
+
+HANDLE
+get_session_parent_dir ()
+{
+  static HANDLE dir;
+  UNICODE_STRING uname;
+  OBJECT_ATTRIBUTES attr;
+  NTSTATUS status;
+
+  if (!dir)
+    {
+      PROCESS_SESSION_INFORMATION psi;
+      status = NtQueryInformationProcess (GetCurrentProcess (),
+					  ProcessSessionInformation,
+					  &psi, sizeof psi, NULL);
+      if (!NT_SUCCESS (status) || psi.SessionId == 0)
+	dir = get_shared_parent_dir ();
+      else
+        {
+	  WCHAR bnoname[MAX_PATH];
+	  __small_swprintf (bnoname,
+			    L"\\Sessions\\BNOLINKS\\%d\\%s%s",
+			    psi.SessionId, cygwin_version.shared_id,
+			    _cygwin_testing ? cygwin_version.dll_build_date : "");
+	  RtlInitUnicodeString (&uname, bnoname);
+	  InitializeObjectAttributes (&attr, &uname, OBJ_INHERIT | OBJ_OPENIF,
+				      NULL, everyone_sd(CYG_SHARED_DIR_ACCESS));
+	  status = NtCreateDirectoryObject (&dir, CYG_SHARED_DIR_ACCESS, &attr);
+	  if (!NT_SUCCESS (status))
+	    api_fatal ("NtCreateDirectoryObject(%S): %p", &uname, status);
+	}
     }
   return dir;
 } 
@@ -63,14 +95,7 @@ get_shared_parent_dir ()
 char * __stdcall
 shared_name (char *ret_buf, const char *str, int num)
 {
-  extern bool _cygwin_testing;
-
-  get_shared_parent_dir ();
-  __small_sprintf (ret_buf, "%scygwin-shared\\%s.%s.%d",
-		   cygheap->shared_prefix,
-		   cygwin_version.shared_id, str, num);
-  if (_cygwin_testing)
-    strcat (ret_buf, cygwin_version.dll_build_date);
+  __small_sprintf (ret_buf, "%s.%d", str, num);
   return ret_buf;
 }
 
@@ -239,7 +264,9 @@ shared_info::initialize ()
       cb = sizeof (*this);	/* Do last, after all shared memory initialization */
     }
 
-  mt.initialize ();
+  mt.initialize ();		/* Initialize shared tape information. */
+
+  get_session_parent_dir ();	/* Create session dir if first process. */
 
   if (cb != SHARED_INFO_CB)
     system_printf ("size of shared memory region changed from %u to %u",