1 files changed, 39 insertions, 0 deletions
diff --git a/ports/sysdeps/unix/sysv/linux/generic/readlink_chk.c b/ports/sysdeps/unix/sysv/linux/generic/readlink_chk.c
new file mode 100644
index 0000000000..e1724aafeb
--- /dev/null
+++ b/ports/sysdeps/unix/sysv/linux/generic/readlink_chk.c
@@ -0,0 +1,39 @@
+/* Copyright (C) 2011 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
+
+   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, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/param.h>
+#ifdef HAVE_INLINED_SYSCALLS
+# include <errno.h>
+# include <sysdep.h>
+#endif
+
+
+ssize_t
+__readlink_chk (const char *path, void *buf, size_t len, size_t buflen)
+{
+  if (len > buflen)
+    __chk_fail ();
+
+#ifdef HAVE_INLINED_SYSCALLS
+  return INLINE_SYSCALL (readlinkat, 4, AT_FDCWD, path, buf, len);
+#else
+  return __readlink (path, buf, len);
+#endif
+}