Refactor libc stubs into libwrap

The --wrap feature of GNU ld supports a cleaner framework for linking in
alternative implementations of libc functions without cpp hacks.
Place wrappers in separate object files to reduce static code size.

1 files changed, 9 insertions, 0 deletions

diff --git a/bsp/libwrap/sys/link.c b/bsp/libwrap/sys/link.c
new file mode 100644
index 0000000..9340cad
--- /dev/null
+++ b/bsp/libwrap/sys/link.c
@@ -0,0 +1,9 @@
+/* See LICENSE of license details. */
+
+#include <errno.h>
+#include "stub.h"
+
+int __wrap_link(const char *old_name, const char *new_name)
+{
+  return _stub(EMLINK);
+}