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authorUlrich Drepper <drepper@redhat.com>2005-07-15 10:32:45 +0000
committerUlrich Drepper <drepper@redhat.com>2005-07-15 10:32:45 +0000
commit8215c9ecf27714c7ec607aba0085383ef923777a (patch)
treeff0127a461256dba9379940e5d33f08928aa4dcf /wcsmbs
parentf45729d8cd80b082c7724883aa9c6c858d0082f9 (diff)
downloadglibc-8215c9ecf27714c7ec607aba0085383ef923777a.tar.gz
* 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.
Diffstat (limited to 'wcsmbs')
-rw-r--r--wcsmbs/bits/wchar2.h288
-rw-r--r--wcsmbs/wchar.h7
-rw-r--r--wcsmbs/wcsncpy.c5
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)