* wcsmbs/bits/wchar2.h: New file.

	* include/bits/wchar2.h: New file.
	* wcsmbs/wchar.h: Include <bits/wchar2.h> if fortification is
	requested.
	* wcsmbs/wcsncpy.c: Add __wcsncpy alias.
	* string/bits/string3.h: Add fortified stpncpy definitions.
	* sysdeps/generic/stpncpy_chk.c: New file.
	* libio/vswprintf.c: Move _IO_wstrnfile definition to strfile.h.
	Export _IO_wstrn_jumps.
	* libio/strfile.h: Define _IO_wstrnfile and declare _IO_wstrn_jumps.
	* include/wchar.h: Declare __wcsncpy and __vswprintf_chk.
	* debug/fgetws_chk.c: New file.
	* debug/fgetws_u_chk.c: New file.
	* debug/fwprintf_chk.c: New file.
	* debug/swprintf_chk.c: New file.
	* debug/vfwprintf_chk.c: New file.
	* debug/vswprintf_chk.c: New file.
	* debug/vwprintf_chk.c: New file.
	* debug/wcpcpy_chk.c: New file.
	* debug/wcpncpy_chk.c: New file.
	* debug/wcscat_chk.c: New file.
	* debug/wcscpy_chk.c: New file.
	* debug/wcsncat_chk.c: New file.
	* debug/wcsncpy_chk.c: New file.
	* debug/wmemcpy_chk.c: New file.
	* debug/wmemmove_chk.c: New file.
	* debug/wmempcpy_chk.c: New file.
	* debug/wmemset_chk.c: New file.
	* debug/wprintf_chk.c: New file.
	* debug/tst-chk1.c: Add tests for new functions.
	* debug/Versions: Export new functions.
	* debug/Makefile (routines): Add new functions.

3 files changed, 298 insertions, 2 deletions

diff --git a/wcsmbs/bits/wchar2.h b/wcsmbs/bits/wchar2.h
new file mode 100644
index 0000000000..5d5b102649
--- /dev/null
+++ b/wcsmbs/bits/wchar2.h
@@ -0,0 +1,288 @@
+/* Checking macros for wchar functions.
+   Copyright (C) 2005 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library 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 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library 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 the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#ifndef _WCHAR_H
+# error "Never include <bits/wchar.h> directly; use <wchar.h> instead."
+#endif
+
+
+extern wchar_t *__wmemcpy_chk (wchar_t *__restrict __s1,
+			       __const wchar_t *__restrict __s2, size_t __n,
+			       size_t __ns1) __THROW;
+extern wchar_t *__REDIRECT (__wmemcpy_alias, (wchar_t *__restrict __s1,
+					      __const wchar_t *__restrict __s2,
+					      size_t __n), wmemcpy) __THROW;
+
+extern __always_inline wchar_t *
+wmemcpy (wchar_t *__restrict __s1, __const wchar_t *__restrict __s2,
+	 size_t __n)
+{
+  if (__bos0 (__s1) != (size_t) -1)
+    return __wmemcpy_chk (__s1, __s2, __n, __bos0 (__s1) / sizeof (wchar_t));
+  return __wmemcpy_alias (__s1, __s2, __n);
+}
+
+
+extern wchar_t *__wmemmove_chk (wchar_t *__s1, __const wchar_t *__s2,
+				size_t __n, size_t __ns1) __THROW;
+extern wchar_t *__REDIRECT (__wmemmove_alias, (wchar_t *__s1,
+					       __const wchar_t *__s2,
+					       size_t __n), wmemmove) __THROW;
+
+extern __always_inline wchar_t *
+wmemmove (wchar_t *__restrict __s1, __const wchar_t *__restrict __s2,
+	  size_t __n)
+{
+  if (__bos0 (__s1) != (size_t) -1)
+    return __wmemmove_chk (__s1, __s2, __n, __bos0 (__s1) / sizeof (wchar_t));
+  return __wmemmove_alias (__s1, __s2, __n);
+}
+
+
+#ifdef __USE_GNU
+extern wchar_t *__wmempcpy_chk (wchar_t *__restrict __s1,
+				__const wchar_t *__restrict __s2, size_t __n,
+				size_t __ns1) __THROW;
+extern wchar_t *__REDIRECT (__wmempcpy_alias,
+			    (wchar_t *__restrict __s1,
+			     __const wchar_t *__restrict __s2,
+			     size_t __n), wmempcpy) __THROW;
+
+extern __always_inline wchar_t *
+wmempcpy (wchar_t *__restrict __s1, __const wchar_t *__restrict __s2,
+	  size_t __n)
+{
+  if (__bos0 (__s1) != (size_t) -1)
+    return __wmempcpy_chk (__s1, __s2, __n, __bos0 (__s1) / sizeof (wchar_t));
+  return __wmempcpy_alias (__s1, __s2, __n);
+}
+#endif
+
+
+extern wchar_t *__wmemset_chk (wchar_t *__s, wchar_t __c, size_t __n,
+			       size_t __ns) __THROW;
+extern wchar_t *__REDIRECT (__wmemset_alias, (wchar_t *__s, wchar_t __c,
+					      size_t __n), wmemset) __THROW;
+
+extern __always_inline wchar_t *
+wmemset (wchar_t *__restrict __s, wchar_t __c, size_t __n)
+{
+  if (__bos0 (__s) != (size_t) -1)
+    return __wmemset_chk (__s, __c, __n, __bos0 (__s) / sizeof (wchar_t));
+  return __wmemset_alias (__s, __c, __n);
+}
+
+
+extern wchar_t *__wcscpy_chk (wchar_t *__restrict __dest,
+			      __const wchar_t *__restrict __src,
+			      size_t __n) __THROW;
+extern wchar_t *__REDIRECT (__wcscpy_alias,
+			    (wchar_t *__restrict __dest,
+			     __const wchar_t *__restrict __src), wcscpy)
+  __THROW;
+
+extern __always_inline wchar_t *
+wcscpy (wchar_t *__dest, __const wchar_t *__src)
+{
+  if (__bos (__dest) != (size_t) -1)
+    return __wcscpy_chk (__dest, __src, __bos (__dest) / sizeof (wchar_t));
+  return __wcscpy_alias (__dest, __src);
+}
+
+
+extern wchar_t *__wcpcpy_chk (wchar_t *__dest, __const wchar_t *__src,
+			      size_t __destlen) __THROW;
+extern wchar_t *__REDIRECT (__wcpcpy_alias, (wchar_t *__dest,
+					     __const wchar_t *__src), wcpcpy)
+  __THROW;
+
+extern __always_inline wchar_t *
+wcpcpy (wchar_t *__dest, __const wchar_t *__src)
+{
+  if (__bos (__dest) != (size_t) -1)
+    return __wcpcpy_chk (__dest, __src, __bos (__dest) / sizeof (wchar_t));
+  return __wcpcpy_alias (__dest, __src);
+}
+
+
+extern wchar_t *__wcsncpy_chk (wchar_t *__restrict __dest,
+			       __const wchar_t *__restrict __src, size_t __n,
+			       size_t __destlen) __THROW;
+extern wchar_t *__REDIRECT (__wcsncpy_alias,
+			    (wchar_t *__restrict __dest,
+			     __const wchar_t *__restrict __src, size_t __n),
+			    wcsncpy) __THROW;
+
+extern __always_inline wchar_t *
+wcsncpy (wchar_t *__dest, __const wchar_t *__src, size_t __n)
+{
+  if (__bos (__dest) != (size_t) -1
+      && (!__builtin_constant_p (__n) || __bos (__dest) >= __n))
+    return __wcsncpy_chk (__dest, __src, __n,
+			  __bos (__dest) / sizeof (wchar_t));
+  return __wcsncpy_alias (__dest, __src, __n);
+}
+
+
+extern wchar_t *__wcpncpy_chk (wchar_t *__restrict __dest,
+			       __const wchar_t *__restrict __src, size_t __n,
+			       size_t __destlen) __THROW;
+extern wchar_t *__REDIRECT (__wcpncpy_alias,
+			    (wchar_t *__restrict __dest,
+			     __const wchar_t *__restrict __src, size_t __n),
+			    wcpncpy) __THROW;
+
+extern __always_inline wchar_t *
+wcpncpy (wchar_t *__dest, __const wchar_t *__src, size_t __n)
+{
+  if (__bos (__dest) != (size_t) -1
+      && (!__builtin_constant_p (__n) || __bos (__dest) >= __n))
+    return __wcpncpy_chk (__dest, __src, __n,
+			  __bos (__dest) / sizeof (wchar_t));
+  return __wcpncpy_alias (__dest, __src, __n);
+}
+
+
+extern wchar_t *__wcscat_chk (wchar_t *__restrict __dest,
+			      __const wchar_t *__restrict __src,
+			      size_t __destlen) __THROW;
+extern wchar_t *__REDIRECT (__wcscat_alias,
+			    (wchar_t *__restrict __dest,
+			     __const wchar_t *__restrict __src), wcscat)
+  __THROW;
+
+extern __always_inline wchar_t *
+wcscat (wchar_t *__dest, __const wchar_t *__src)
+{
+  if (__bos (__dest) != (size_t) -1)
+    return __wcscat_chk (__dest, __src, __bos (__dest) / sizeof (wchar_t));
+  return __wcscat_alias (__dest, __src);
+}
+
+
+extern wchar_t *__wcsncat_chk (wchar_t *__restrict __dest,
+			       __const wchar_t *__restrict __src,
+			       size_t __n, size_t __destlen) __THROW;
+extern wchar_t *__REDIRECT (__wcsncat_alias,
+			    (wchar_t *__restrict __dest,
+			     __const wchar_t *__restrict __src, size_t __n),
+			    wcsncat) __THROW;
+
+extern __always_inline wchar_t *
+wcsncat (wchar_t *__dest, __const wchar_t *__src, size_t __n)
+{
+  if (__bos (__dest) != (size_t) -1)
+    return __wcsncat_chk (__dest, __src, __n,
+			  __bos (__dest) / sizeof (wchar_t));
+  return __wcsncat_alias (__dest, __src, __n);
+}
+
+
+extern int __swprintf_chk (wchar_t *__restrict __s, size_t __n,
+			   int __flag, size_t __s_len,
+			   __const wchar_t *__restrict __format, ...)
+     __THROW /* __attribute__ ((__format__ (__wprintf__, 5, 6))) */;
+
+/* XXX We might want to have support in gcc for swprintf.  */
+#define swprintf(s, n, format, ...) \
+  (__bos (s) != (size_t) -1 || __USE_FORTIFY_LEVEL > 1			      \
+   ? __swprintf_chk (s, n, __USE_FORTIFY_LEVEL - 1, __bos (s), format,	      \
+		     __VA_ARGS__)					      \
+   : swprintf (s, n, format, __VA_ARGS__))
+
+
+extern int __vswprintf_chk (wchar_t *__restrict __s, size_t __n,
+			    int __flag, size_t __s_len,
+			    __const wchar_t *__restrict __format,
+			    __gnuc_va_list __arg)
+     __THROW /* __attribute__ ((__format__ (__wprintf__, 5, 0))) */;
+extern int __REDIRECT (__vswprintf_alias,
+		       (wchar_t *__restrict __s, size_t __n,
+			__const wchar_t *__restrict __format,
+			__gnuc_va_list __arg), vswprintf)
+     __THROW /* __attribute__ ((__format__ (__wprintf__, 3, 0))) */;
+
+
+extern __always_inline int
+vswprintf (wchar_t *__s, size_t __n, __const wchar_t *__format,
+	   __gnuc_va_list __arg)
+{
+  if (__bos (__s) != (size_t) -1 || __USE_FORTIFY_LEVEL > 1)
+    return __vswprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1, __bos (__s),
+			    __format, __arg);
+  return vswprintf (__s, __n, __format, __arg);
+}
+
+
+#if __USE_FORTIFY_LEVEL > 1
+
+extern int __fwprintf_chk (FILE *__restrict __stream, int __flag,
+			   __const wchar_t *__restrict __format, ...);
+extern int __wprintf_chk (int __flag, __const wchar_t *__restrict __format,
+			  ...);
+extern int __vfwprintf_chk (FILE *__restrict __stream, int __flag,
+			    __const wchar_t *__restrict __format,
+			    _G_va_list __ap);
+extern int __vwprintf_chk (int __flag, __const wchar_t *__restrict __format,
+			   _G_va_list __ap);
+
+# define wprintf(...) \
+  __wprintf_chk (__USE_FORTIFY_LEVEL - 1, __VA_ARGS__)
+# define fwprintf(stream, ...) \
+  __fwprintf_chk (stream, __USE_FORTIFY_LEVEL - 1, __VA_ARGS__)
+# define vwprintf(format, ap) \
+  __vwprintf_chk (__USE_FORTIFY_LEVEL - 1, format, ap)
+# define vfwprintf(stream, format, ap) \
+  __vfwprintf_chk (stream, __USE_FORTIFY_LEVEL - 1, format, ap)
+
+#endif
+
+extern wchar_t *__fgetws_chk (wchar_t *__restrict __s, size_t __size, int __n,
+			      FILE *__restrict __stream) __wur;
+extern wchar_t *__REDIRECT (__fgetws_alias,
+			    (wchar_t *__restrict __s, int __n,
+			     FILE *__restrict __stream), fgetws) __wur;
+
+extern __always_inline __wur wchar_t *
+fgetws (wchar_t *__restrict __s, int __n, FILE *__restrict __stream)
+{
+  if (__bos (__s) != (size_t) -1
+      && (!__builtin_constant_p (__n) || (size_t) __n > __bos (__s)))
+    return __fgetws_chk (__s, __bos (__s), __n, __stream);
+  return __fgetws_alias (__s, __n, __stream);
+}
+
+#ifdef __USE_GNU
+extern wchar_t *__fgetws_unlocked_chk (wchar_t *__restrict __s, size_t __size,
+				       int __n, FILE *__restrict __stream)
+  __wur;
+extern wchar_t *__REDIRECT (__fgetws_unlocked_alias,
+			    (wchar_t *__restrict __s, int __n,
+			     FILE *__restrict __stream), fgetws_unlocked)
+  __wur;
+
+extern __always_inline __wur wchar_t *
+fgetws_unlocked (wchar_t *__restrict __s, int __n, FILE *__restrict __stream)
+{
+  if (__bos (__s) != (size_t) -1
+      && (!__builtin_constant_p (__n) || (size_t) __n > __bos (__s)))
+    return __fgetws_unlocked_chk (__s, __bos (__s), __n, __stream);
+  return __fgetws_unlocked_alias (__s, __n, __stream);
+}
+#endif
diff --git a/wcsmbs/wchar.h b/wcsmbs/wchar.h
index fe4ee80bff..0c02dcc574 100644
--- a/wcsmbs/wchar.h
+++ b/wcsmbs/wchar.h
@@ -833,6 +833,13 @@ extern size_t wcsftime_l (wchar_t *__restrict __s, size_t __maxsize,
 # include <wctype.h>
 #endif
 
+
+/* Define some macros helping to catch buffer overflows.  */
+#if __USE_FORTIFY_LEVEL > 0 && !defined __cplusplus
+# include <bits/wchar2.h>
+#endif
+
+
 __END_DECLS
 
 #endif	/* _WCHAR_H defined */
diff --git a/wcsmbs/wcsncpy.c b/wcsmbs/wcsncpy.c
index 8469d94d79..06a20d2333 100644
--- a/wcsmbs/wcsncpy.c
+++ b/wcsmbs/wcsncpy.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
+/* Copyright (C) 1995, 1996, 1997, 2005 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995.
 
@@ -22,7 +22,7 @@
 
 /* Copy no more than N wide-characters of SRC to DEST.	*/
 wchar_t *
-wcsncpy (dest, src, n)
+__wcsncpy (dest, src, n)
      wchar_t *dest;
      const wchar_t *src;
      size_t n;
@@ -84,3 +84,4 @@ wcsncpy (dest, src, n)
 
   return s;
 }
+weak_alias (__wcsncpy, wcsncpy)