libltdl/loaders/loadlibrary.c

/* loader-loadlibrary.c --  dynamic linking for Win32

   Copyright (C) 1998-2000, 2004-2008, 2010-2014 Free Software
   Foundation, Inc.
   Written by Thomas Tanner, 1998

   NOTE: The canonical source of this file is maintained with the
   GNU Libtool package.  Report bugs to bug-libtool@gnu.org.

GNU Libltdl is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.

As a special exception to the GNU Lesser General Public License,
if you distribute this file as part of a program or library that
is built using GNU Libtool, you may include this file under the
same distribution terms that you use for the rest of that program.

GNU Libltdl is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public
License along with GNU Libltdl; see the file COPYING.LIB.  If not, a
copy can be downloaded from  http://www.gnu.org/licenses/lgpl.html,
or obtained by writing to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/

#include "lt__private.h"
#include "lt_dlloader.h"

#if defined __CYGWIN__
# include <sys/cygwin.h>
#endif

/* Use the preprocessor to rename non-static symbols to avoid namespace
   collisions when the loader code is statically linked into libltdl.
   Use the "<module_name>_LTX_" prefix so that the symbol addresses can
   be fetched from the preloaded symbol list by lt_dlsym():  */
#define get_vtable      loadlibrary_LTX_get_vtable

LT_BEGIN_C_DECLS
LT_SCOPE lt_dlvtable *get_vtable (lt_user_data loader_data);
LT_END_C_DECLS


/* Boilerplate code to set up the vtable for hooking this loader into
   libltdl's loader list:  */
static int       vl_exit  (lt_user_data loader_data);
static lt_module vm_open  (lt_user_data loader_data, const char *filename,
                           lt_dladvise advise);
static int       vm_close (lt_user_data loader_data, lt_module module);
static void *    vm_sym   (lt_user_data loader_data, lt_module module,
                          const char *symbolname);

static lt_dlinterface_id iface_id = 0;
static lt_dlvtable *vtable = 0;

/* Return the vtable for this loader, only the name and sym_prefix
   attributes (plus the virtual function implementations, obviously)
   change between loaders.  */
lt_dlvtable *
get_vtable (lt_user_data loader_data)
{
  if (!vtable)
    {
      vtable = (lt_dlvtable *) lt__zalloc (sizeof *vtable);
      iface_id = lt_dlinterface_register ("ltdl loadlibrary", NULL);
    }

  if (vtable && !vtable->name)
    {
      vtable->name              = "lt_loadlibrary";
      vtable->module_open       = vm_open;
      vtable->module_close      = vm_close;
      vtable->find_sym          = vm_sym;
      vtable->dlloader_exit     = vl_exit;
      vtable->dlloader_data     = loader_data;
      vtable->priority          = LT_DLLOADER_APPEND;
    }

  if (vtable && (vtable->dlloader_data != loader_data))
    {
      LT__SETERROR (INIT_LOADER);
      return 0;
    }

  return vtable;
}


/* --- IMPLEMENTATION --- */


#include <windows.h>

#define LOCALFREE(mem)                                       LT_STMT_START { \
        if (mem) { LocalFree ((void *)mem); mem = NULL; }    } LT_STMT_END
#define LOADLIB__SETERROR(errmsg) LT__SETERRORSTR (loadlibraryerror (errmsg))
#define LOADLIB_SETERROR(errcode) LOADLIB__SETERROR (LT__STRERROR (errcode))

static const char *loadlibraryerror (const char *default_errmsg);
static DWORD WINAPI wrap_getthreaderrormode (void);
static DWORD WINAPI fallback_getthreaderrormode (void);
static BOOL WINAPI wrap_setthreaderrormode (DWORD mode, DWORD *oldmode);
static BOOL WINAPI fallback_setthreaderrormode (DWORD mode, DWORD *oldmode);

typedef DWORD (WINAPI getthreaderrormode_type) (void);
typedef BOOL (WINAPI setthreaderrormode_type) (DWORD, DWORD *);

static getthreaderrormode_type *getthreaderrormode = wrap_getthreaderrormode;
static setthreaderrormode_type *setthreaderrormode = wrap_setthreaderrormode;
static char *error_message = 0;


/* A function called through the vtable when this loader is no
   longer needed by the application.  */
static int
vl_exit (lt_user_data LT__UNUSED loader_data)
{
  vtable = NULL;
  LOCALFREE (error_message);
  return 0;
}

/* A function called through the vtable to open a module with this
   loader.  Returns an opaque representation of the newly opened
   module for processing with this loader's other vtable functions.  */
static lt_module
vm_open (lt_user_data LT__UNUSED loader_data, const char *filename,
         lt_dladvise LT__UNUSED advise)
{
  lt_module     module     = 0;
  char          *ext;
  char          wpath[MAX_PATH];
  size_t        len;

  if (!filename)
    {
      /* Get the name of main module */
      *wpath = 0;
      GetModuleFileName (NULL, wpath, sizeof (wpath));
      filename = wpath;
    }
  else
    {
      len = LT_STRLEN (filename);

      if (len >= MAX_PATH)
        {
          LT__SETERROR (CANNOT_OPEN);
          return 0;
        }

#if HAVE_DECL_CYGWIN_CONV_PATH
      if (cygwin_conv_path (CCP_POSIX_TO_WIN_A, filename, wpath, MAX_PATH))
        {
          LT__SETERROR (CANNOT_OPEN);
          return 0;
        }
      len = 0;
#elif defined __CYGWIN__
      cygwin_conv_to_full_win32_path (filename, wpath);
      len = 0;
#else
      strcpy(wpath, filename);
#endif

      ext = strrchr (wpath, '.');
      if (!ext)
        {
          /* Append a '.' to stop Windows from adding an
             implicit '.dll' extension. */
          if (!len)
            len = strlen (wpath);

          if (len + 1 >= MAX_PATH)
            {
              LT__SETERROR (CANNOT_OPEN);
              return 0;
            }

          wpath[len] = '.';
          wpath[len+1] = '\0';
        }
    }

  {
    /* Silence dialog from LoadLibrary on some failures. */
    DWORD errormode = getthreaderrormode ();
    DWORD last_error;

    setthreaderrormode (errormode | SEM_FAILCRITICALERRORS, NULL);

    module = LoadLibrary (wpath);

    /* Restore the error mode. */
    last_error = GetLastError ();
    setthreaderrormode (errormode, NULL);
    SetLastError (last_error);
  }

  /* libltdl expects this function to fail if it is unable
     to physically load the library.  Sadly, LoadLibrary
     will search the loaded libraries for a match and return
     one of them if the path search load fails.

     We check whether LoadLibrary is returning a handle to
     an already loaded module, and simulate failure if we
     find one. */
  {
    lt_dlhandle cur = 0;

    while ((cur = lt_dlhandle_iterate (iface_id, cur)))
      {
        if (!cur->module)
          {
            cur = 0;
            break;
          }

        if (cur->module == module)
          {
            break;
          }
      }

    if (!module)
      LOADLIB_SETERROR (CANNOT_OPEN);
    else if (cur)
      {
        LT__SETERROR (CANNOT_OPEN);
        module = 0;
      }
  }

  return module;
}


/* A function called through the vtable when a particular module
   should be unloaded.  */
static int
vm_close (lt_user_data LT__UNUSED loader_data, lt_module module)
{
  int errors = 0;

  if (FreeLibrary ((HMODULE) module) == 0)
    {
      LOADLIB_SETERROR (CANNOT_CLOSE);
      ++errors;
    }

  return errors;
}


/* A function called through the vtable to get the address of
   a symbol loaded from a particular module.  */
static void *
vm_sym (lt_user_data LT__UNUSED loader_data, lt_module module, const char *name)
{
  void *address = (void *) GetProcAddress ((HMODULE) module, name);

  if (!address)
    {
      LOADLIB_SETERROR (SYMBOL_NOT_FOUND);
    }

  return address;
}


/* --- HELPER FUNCTIONS --- */


/* Return the windows error message, or the passed in error message on
   failure. */
static const char *
loadlibraryerror (const char *default_errmsg)
{
  size_t len;
  LOCALFREE (error_message);

  FormatMessageA (FORMAT_MESSAGE_ALLOCATE_BUFFER |
                  FORMAT_MESSAGE_FROM_SYSTEM |
                  FORMAT_MESSAGE_IGNORE_INSERTS,
                  NULL,
                  GetLastError (),
                  0,
                  (char *) &error_message,
                  0, NULL);

  /* Remove trailing CRNL */
  len = LT_STRLEN (error_message);
  if (len && error_message[len - 1] == '\n')
    error_message[--len] = LT_EOS_CHAR;
  if (len && error_message[len - 1] == '\r')
    error_message[--len] = LT_EOS_CHAR;

  return len ? error_message : default_errmsg;
}

/* A function called through the getthreaderrormode variable that checks
   if the system supports GetThreadErrorMode (or GetErrorMode) and arranges
   for it or a fallback implementation to be called directly in the future.
   The selected version is then called. */
static DWORD WINAPI
wrap_getthreaderrormode (void)
{
  HMODULE kernel32 = GetModuleHandleA ("kernel32.dll");
  getthreaderrormode
    = (getthreaderrormode_type *) GetProcAddress (kernel32,
                                                  "GetThreadErrorMode");
  if (!getthreaderrormode)
    getthreaderrormode
      = (getthreaderrormode_type *) GetProcAddress (kernel32,
                                                    "GetErrorMode");
  if (!getthreaderrormode)
    getthreaderrormode = fallback_getthreaderrormode;
  return getthreaderrormode ();
}

/* A function called through the getthreaderrormode variable for cases
   where the system does not support GetThreadErrorMode or GetErrorMode */
static DWORD WINAPI
fallback_getthreaderrormode (void)
{
  /* Prior to Windows Vista, the only way to get the current error
     mode was to set a new one. In our case, we are setting a new
     error mode right after "getting" it while ignoring the error
     mode in effect when setting the new error mode, so that's
     fairly ok. */
  return (DWORD) SetErrorMode (SEM_FAILCRITICALERRORS);
}

/* A function called through the setthreaderrormode variable that checks
   if the system supports SetThreadErrorMode and arranges for it or a
   fallback implementation to be called directly in the future.
   The selected version is then called. */
static BOOL WINAPI
wrap_setthreaderrormode (DWORD mode, DWORD *oldmode)
{
  HMODULE kernel32 = GetModuleHandleA ("kernel32.dll");
  setthreaderrormode
    = (setthreaderrormode_type *) GetProcAddress (kernel32,
                                                  "SetThreadErrorMode");
  if (!setthreaderrormode)
    setthreaderrormode = fallback_setthreaderrormode;
  return setthreaderrormode (mode, oldmode);
}

/* A function called through the setthreaderrormode variable for cases
   where the system does not support SetThreadErrorMode. */
static BOOL WINAPI
fallback_setthreaderrormode (DWORD mode, DWORD *oldmode)
{
  /* Prior to Windows 7, there was no way to set the thread local error
     mode, so set the process global error mode instead. */
  DWORD old = (DWORD) SetErrorMode (mode);
  if (oldmode)
    *oldmode = old;
  return TRUE;
}
Revision:	4901
Committed:	Sat Nov 22 18:31:53 2014 UTC (11 years, 8 months ago) by michael
Content type:	text/x-csrc
File size:	10836 byte(s)
Log Message:	- autoreconf
#	User	Rev	Content
1	michael	945	/* loader-loadlibrary.c -- dynamic linking for Win32
2
3	michael	4901	Copyright (C) 1998-2000, 2004-2008, 2010-2014 Free Software
4			Foundation, Inc.
5	michael	945	Written by Thomas Tanner, 1998
6
7			NOTE: The canonical source of this file is maintained with the
8			GNU Libtool package. Report bugs to bug-libtool@gnu.org.
9
10			GNU Libltdl is free software; you can redistribute it and/or
11			modify it under the terms of the GNU Lesser General Public
12			License as published by the Free Software Foundation; either
13			version 2 of the License, or (at your option) any later version.
14
15			As a special exception to the GNU Lesser General Public License,
16			if you distribute this file as part of a program or library that
17			is built using GNU Libtool, you may include this file under the
18			same distribution terms that you use for the rest of that program.
19
20			GNU Libltdl is distributed in the hope that it will be useful,
21			but WITHOUT ANY WARRANTY; without even the implied warranty of
22			MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23			GNU Lesser General Public License for more details.
24
25			You should have received a copy of the GNU Lesser General Public
26			License along with GNU Libltdl; see the file COPYING.LIB. If not, a
27			copy can be downloaded from http://www.gnu.org/licenses/lgpl.html,
28			or obtained by writing to the Free Software Foundation, Inc.,
29			51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
30			*/
31
32			#include "lt__private.h"
33			#include "lt_dlloader.h"
34
35	michael	4901	#if defined __CYGWIN__
36	michael	945	# include <sys/cygwin.h>
37			#endif
38
39			/* Use the preprocessor to rename non-static symbols to avoid namespace
40			collisions when the loader code is statically linked into libltdl.
41			Use the "<module_name>_LTX_" prefix so that the symbol addresses can
42			be fetched from the preloaded symbol list by lt_dlsym(): */
43			#define get_vtable loadlibrary_LTX_get_vtable
44
45			LT_BEGIN_C_DECLS
46			LT_SCOPE lt_dlvtable *get_vtable (lt_user_data loader_data);
47			LT_END_C_DECLS
48
49
50			/* Boilerplate code to set up the vtable for hooking this loader into
51			libltdl's loader list: */
52			static int vl_exit (lt_user_data loader_data);
53			static lt_module vm_open (lt_user_data loader_data, const char *filename,
54			lt_dladvise advise);
55			static int vm_close (lt_user_data loader_data, lt_module module);
56			static void * vm_sym (lt_user_data loader_data, lt_module module,
57			const char *symbolname);
58
59			static lt_dlinterface_id iface_id = 0;
60			static lt_dlvtable *vtable = 0;
61
62			/* Return the vtable for this loader, only the name and sym_prefix
63			attributes (plus the virtual function implementations, obviously)
64			change between loaders. */
65			lt_dlvtable *
66			get_vtable (lt_user_data loader_data)
67			{
68			if (!vtable)
69			{
70			vtable = (lt_dlvtable ) lt__zalloc (sizeof vtable);
71			iface_id = lt_dlinterface_register ("ltdl loadlibrary", NULL);
72			}
73
74			if (vtable && !vtable->name)
75			{
76			vtable->name = "lt_loadlibrary";
77			vtable->module_open = vm_open;
78			vtable->module_close = vm_close;
79			vtable->find_sym = vm_sym;
80			vtable->dlloader_exit = vl_exit;
81			vtable->dlloader_data = loader_data;
82			vtable->priority = LT_DLLOADER_APPEND;
83			}
84
85			if (vtable && (vtable->dlloader_data != loader_data))
86			{
87			LT__SETERROR (INIT_LOADER);
88			return 0;
89			}
90
91			return vtable;
92			}
93
94
95
96			/* --- IMPLEMENTATION --- */
97
98
99			#include <windows.h>
100
101	michael	1094	#define LOCALFREE(mem) LT_STMT_START { \
102			if (mem) { LocalFree ((void *)mem); mem = NULL; } } LT_STMT_END
103			#define LOADLIB__SETERROR(errmsg) LT__SETERRORSTR (loadlibraryerror (errmsg))
104			#define LOADLIB_SETERROR(errcode) LOADLIB__SETERROR (LT__STRERROR (errcode))
105
106			static const char loadlibraryerror (const char default_errmsg);
107			static DWORD WINAPI wrap_getthreaderrormode (void);
108			static DWORD WINAPI fallback_getthreaderrormode (void);
109			static BOOL WINAPI wrap_setthreaderrormode (DWORD mode, DWORD *oldmode);
110			static BOOL WINAPI fallback_setthreaderrormode (DWORD mode, DWORD *oldmode);
111
112			typedef DWORD (WINAPI getthreaderrormode_type) (void);
113			typedef BOOL (WINAPI setthreaderrormode_type) (DWORD, DWORD *);
114
115			static getthreaderrormode_type *getthreaderrormode = wrap_getthreaderrormode;
116			static setthreaderrormode_type *setthreaderrormode = wrap_setthreaderrormode;
117			static char *error_message = 0;
118
119
120	michael	945	/* A function called through the vtable when this loader is no
121			longer needed by the application. */
122			static int
123			vl_exit (lt_user_data LT__UNUSED loader_data)
124			{
125			vtable = NULL;
126	michael	1094	LOCALFREE (error_message);
127	michael	945	return 0;
128			}
129
130			/* A function called through the vtable to open a module with this
131			loader. Returns an opaque representation of the newly opened
132			module for processing with this loader's other vtable functions. */
133			static lt_module
134			vm_open (lt_user_data LT__UNUSED loader_data, const char *filename,
135			lt_dladvise LT__UNUSED advise)
136			{
137			lt_module module = 0;
138			char *ext;
139			char wpath[MAX_PATH];
140			size_t len;
141
142			if (!filename)
143			{
144			/* Get the name of main module */
145			*wpath = 0;
146			GetModuleFileName (NULL, wpath, sizeof (wpath));
147			filename = wpath;
148			}
149			else
150			{
151			len = LT_STRLEN (filename);
152
153			if (len >= MAX_PATH)
154			{
155			LT__SETERROR (CANNOT_OPEN);
156			return 0;
157			}
158
159			#if HAVE_DECL_CYGWIN_CONV_PATH
160			if (cygwin_conv_path (CCP_POSIX_TO_WIN_A, filename, wpath, MAX_PATH))
161			{
162			LT__SETERROR (CANNOT_OPEN);
163			return 0;
164			}
165			len = 0;
166	michael	4901	#elif defined __CYGWIN__
167	michael	945	cygwin_conv_to_full_win32_path (filename, wpath);
168			len = 0;
169			#else
170			strcpy(wpath, filename);
171			#endif
172
173			ext = strrchr (wpath, '.');
174			if (!ext)
175			{
176	michael	4901	/* Append a '.' to stop Windows from adding an
177			implicit '.dll' extension. */
178	michael	945	if (!len)
179	michael	1094	len = strlen (wpath);
180	michael	945
181			if (len + 1 >= MAX_PATH)
182			{
183			LT__SETERROR (CANNOT_OPEN);
184			return 0;
185			}
186
187			wpath[len] = '.';
188			wpath[len+1] = '\0';
189			}
190			}
191
192			{
193	michael	1094	/* Silence dialog from LoadLibrary on some failures. */
194			DWORD errormode = getthreaderrormode ();
195			DWORD last_error;
196	michael	945
197	michael	1094	setthreaderrormode (errormode \| SEM_FAILCRITICALERRORS, NULL);
198
199	michael	945	module = LoadLibrary (wpath);
200
201			/* Restore the error mode. */
202	michael	1094	last_error = GetLastError ();
203			setthreaderrormode (errormode, NULL);
204			SetLastError (last_error);
205	michael	945	}
206
207			/* libltdl expects this function to fail if it is unable
208			to physically load the library. Sadly, LoadLibrary
209			will search the loaded libraries for a match and return
210			one of them if the path search load fails.
211
212			We check whether LoadLibrary is returning a handle to
213			an already loaded module, and simulate failure if we
214			find one. */
215			{
216			lt_dlhandle cur = 0;
217
218			while ((cur = lt_dlhandle_iterate (iface_id, cur)))
219			{
220			if (!cur->module)
221			{
222			cur = 0;
223			break;
224			}
225
226			if (cur->module == module)
227			{
228			break;
229			}
230			}
231
232	michael	1094	if (!module)
233			LOADLIB_SETERROR (CANNOT_OPEN);
234			else if (cur)
235	michael	945	{
236			LT__SETERROR (CANNOT_OPEN);
237			module = 0;
238			}
239			}
240
241			return module;
242			}
243
244
245			/* A function called through the vtable when a particular module
246			should be unloaded. */
247			static int
248			vm_close (lt_user_data LT__UNUSED loader_data, lt_module module)
249			{
250			int errors = 0;
251
252	michael	1094	if (FreeLibrary ((HMODULE) module) == 0)
253	michael	945	{
254	michael	1094	LOADLIB_SETERROR (CANNOT_CLOSE);
255	michael	945	++errors;
256			}
257
258			return errors;
259			}
260
261
262			/* A function called through the vtable to get the address of
263			a symbol loaded from a particular module. */
264			static void *
265			vm_sym (lt_user_data LT__UNUSED loader_data, lt_module module, const char *name)
266			{
267			void address = (void ) GetProcAddress ((HMODULE) module, name);
268
269			if (!address)
270			{
271	michael	1094	LOADLIB_SETERROR (SYMBOL_NOT_FOUND);
272	michael	945	}
273
274			return address;
275			}
276	michael	1094
277
278
279			/* --- HELPER FUNCTIONS --- */
280
281
282			/* Return the windows error message, or the passed in error message on
283			failure. */
284			static const char *
285			loadlibraryerror (const char *default_errmsg)
286			{
287			size_t len;
288			LOCALFREE (error_message);
289
290			FormatMessageA (FORMAT_MESSAGE_ALLOCATE_BUFFER \|
291			FORMAT_MESSAGE_FROM_SYSTEM \|
292			FORMAT_MESSAGE_IGNORE_INSERTS,
293			NULL,
294			GetLastError (),
295			0,
296			(char *) &error_message,
297			0, NULL);
298
299			/* Remove trailing CRNL */
300			len = LT_STRLEN (error_message);
301			if (len && error_message[len - 1] == '\n')
302			error_message[--len] = LT_EOS_CHAR;
303			if (len && error_message[len - 1] == '\r')
304			error_message[--len] = LT_EOS_CHAR;
305
306			return len ? error_message : default_errmsg;
307			}
308
309	michael	4901	/* A function called through the getthreaderrormode variable that checks
310	michael	1094	if the system supports GetThreadErrorMode (or GetErrorMode) and arranges
311			for it or a fallback implementation to be called directly in the future.
312			The selected version is then called. */
313			static DWORD WINAPI
314			wrap_getthreaderrormode (void)
315			{
316			HMODULE kernel32 = GetModuleHandleA ("kernel32.dll");
317			getthreaderrormode
318			= (getthreaderrormode_type *) GetProcAddress (kernel32,
319			"GetThreadErrorMode");
320			if (!getthreaderrormode)
321			getthreaderrormode
322			= (getthreaderrormode_type *) GetProcAddress (kernel32,
323			"GetErrorMode");
324			if (!getthreaderrormode)
325			getthreaderrormode = fallback_getthreaderrormode;
326			return getthreaderrormode ();
327			}
328
329			/* A function called through the getthreaderrormode variable for cases
330			where the system does not support GetThreadErrorMode or GetErrorMode */
331			static DWORD WINAPI
332			fallback_getthreaderrormode (void)
333			{
334			/* Prior to Windows Vista, the only way to get the current error
335			mode was to set a new one. In our case, we are setting a new
336			error mode right after "getting" it while ignoring the error
337			mode in effect when setting the new error mode, so that's
338			fairly ok. */
339			return (DWORD) SetErrorMode (SEM_FAILCRITICALERRORS);
340			}
341
342	michael	4901	/* A function called through the setthreaderrormode variable that checks
343	michael	1094	if the system supports SetThreadErrorMode and arranges for it or a
344			fallback implementation to be called directly in the future.
345			The selected version is then called. */
346			static BOOL WINAPI
347			wrap_setthreaderrormode (DWORD mode, DWORD *oldmode)
348			{
349			HMODULE kernel32 = GetModuleHandleA ("kernel32.dll");
350			setthreaderrormode
351			= (setthreaderrormode_type *) GetProcAddress (kernel32,
352			"SetThreadErrorMode");
353			if (!setthreaderrormode)
354			setthreaderrormode = fallback_setthreaderrormode;
355			return setthreaderrormode (mode, oldmode);
356			}
357
358			/* A function called through the setthreaderrormode variable for cases
359			where the system does not support SetThreadErrorMode. */
360			static BOOL WINAPI
361			fallback_setthreaderrormode (DWORD mode, DWORD *oldmode)
362			{
363			/* Prior to Windows 7, there was no way to set the thread local error
364			mode, so set the process global error mode instead. */
365			DWORD old = (DWORD) SetErrorMode (mode);
366			if (oldmode)
367			*oldmode = old;
368			return TRUE;
369			}