Added fortified versions for the functions in the freestanding library.

1 files changed, 36 insertions, 0 deletions

diff --git a/runtime/Freestanding/fortify-fs.c b/runtime/Freestanding/fortify-fs.c
new file mode 100644
index 00000000..3bbd34df
--- /dev/null
+++ b/runtime/Freestanding/fortify-fs.c
@@ -0,0 +1,36 @@
+//===-- fortify-fs.c ------------------------------------------------------===//
+//
+//                     The KLEE Symbolic Virtual Machine
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+/* Fortified versions of the libc functions defined in the FreeStanding library
+ */
+
+#include "klee/klee.h"
+
+#include <string.h>
+
+void *__memmove_chk(void *dest, const void *src, size_t len, size_t destlen) {
+  if (len > destlen)
+    klee_report_error(__FILE__, __LINE__, "memmove overflow", "ptr.err");
+
+  return memmove(dest, src, len);
+}
+
+void *__memset_chk(void *dest, int c, size_t len, size_t destlen) {
+  if (len > destlen)
+    klee_report_error(__FILE__, __LINE__, "memset overflow", "ptr.err");
+
+  return memset(dest, c, len);
+}
+
+void *__memcpy_chk(void *dest, const void *src, size_t len, size_t destlen) {
+  if (len > destlen)
+    klee_report_error(__FILE__, __LINE__, "memcpy overflow", "ptr.err");
+
+  return memcpy(dest, src, len);
+}