* Makerules (sysd-rules): Define PTW for ptw-* files.

* Versions: Define GLIBC_2.7 for libc.
	* include/stdio.h: Declare __fortify_fail.
	* debug/fortify_fail.c: New file.
	* debug/Makefile (routines): Add fortify_fail.
	* debug/chk_fail.c: Use __fortify_fail.
	* debug/stack_chk_fail.c: Likewise.
	* io/Versions: Export __open_2, __open64_2, __openat_2, and
	__openat64_2 for GLIBC_2.7.
	* io/fcntl.h: When compiling with fortification, include bits/fcntl2.h.
	* io/open.c: Define *_2 variant of function which checks for O_CREAT
	and fails if necessary.
	* io/open64.c: Likewise.
	* io/openat.c: Likewise.
	* io/openat64.c: Likewise.
	* sysdeps/unix/sysv/linux/open64.c: Likewise.
	* sysdeps/unix/sysv/linux/openat.c: Likewise.
	* sysdeps/unix/sysv/linux/openat64.c: Likewise.
	* io/bits/fcntl2.h: New file.
	* include/fcntl.h: Declare __open_2, __open64_2, __openat_2, and
	__openat64_2.
	* include/bits/fcntl2.h: New file.
	* sysdeps/unix/sysv/linux/Makefile [subdir=io] (sysdep_routines):
	Add open_2.
	* sysdeps/unix/sysv/linux/open_2.c: New file.

sysdeps/unix/sysv/linux/Makefile

@@ -137,7 +137,7 @@ endif
 
 ifeq ($(subdir),io)
 sysdep_routines += xstatconv internal_statvfs internal_statvfs64 \
-		   sync_file_range
+		   sync_file_range open_2
 endif
 
 ifeq ($(subdir),elf)

sysdeps/unix/sysv/linux/open64.c

@@ -1,4 +1,5 @@
-/* Copyright (C) 1991,1995-1997,1999,2000,2002 Free Software Foundation, Inc.
+/* Copyright (C) 1991,1995-1997,1999,2000,2002,2007
+   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
@@ -19,7 +20,7 @@
 #include <errno.h>
 #include <fcntl.h>
 #include <stdarg.h>
-#include <bp-sym.h>
+#include <stdio.h>
 #include <sysdep-cancel.h>
 
 /* Open FILE with access OFLAG.  If OFLAG includes O_CREAT,
@@ -48,6 +49,20 @@ __libc_open64 (const char *file, int oflag, ...)
 
   return result;
 }
-weak_alias (__libc_open64, BP_SYM (__open64))
-libc_hidden_weak (BP_SYM (__open64))
-weak_alias (__libc_open64, BP_SYM (open64))
+weak_alias (__libc_open64, __open64)
+libc_hidden_weak (__open64)
+weak_alias (__libc_open64, open64)
+
+
+#ifndef PTW
+int
+__open64_2 (file, oflag)
+     const char *file;
+     int oflag;
+{
+  if (oflag & O_CREAT)
+    __fortify_fail ("invalid open64 call: O_CREAT without mode");
+
+  return __open64 (file, oflag);
+}
+#endif

sysdeps/unix/sysv/linux/open_2.c

@@ -0,0 +1,32 @@
+/* Copyright (C) 2007 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.  */
+
+#include <fcntl.h>
+#include <stdio.h>
+
+
+int
+__open_2 (file, oflag)
+     const char *file;
+     int oflag;
+{
+  if (oflag & O_CREAT)
+    __fortify_fail ("invalid open call: O_CREAT without mode");
+
+  return __open (file, oflag);
+}

sysdeps/unix/sysv/linux/openat.c

@@ -1,4 +1,4 @@
-/* Copyright (C) 2005, 2006 Free Software Foundation, Inc.
+/* Copyright (C) 2005, 2006, 2007 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
@@ -30,6 +30,7 @@
 
 #ifndef OPENAT
 # define OPENAT openat
+# define __OPENAT_2 __openat_2
 
 # ifndef __ASSUME_ATFCTS
 /* Set errno after a failed call.  If BUF is not null,
@@ -173,3 +174,18 @@ __OPENAT (fd, file, oflag)
 }
 libc_hidden_def (__OPENAT)
 weak_alias (__OPENAT, OPENAT)
+
+
+int
+__OPENAT_2 (fd, file, oflag)
+     int fd;
+     const char *file;
+     int oflag;
+{
+  if (oflag & O_CREAT)
+#define MSG(s) MSG2 (s)
+#define MSG2(s) "invalid " #s " call: O_CREAT without mode"
+    __fortify_fail (MSG (OPENAT));
+
+  return __OPENAT (fd, file, oflag);
+}

sysdeps/unix/sysv/linux/openat64.c

@@ -1,4 +1,5 @@
 #define OPENAT openat64
+#define __OPENAT_2 __openat64_2
 #define MORE_OFLAGS O_LARGEFILE
 
 #include "openat.c"