[NaCl SDK] Support non blocking TCP/UDP

native_client_sdk/src/libraries/nacl_io/kernel_intercept.cc

Index: native_client_sdk/src/libraries/nacl_io/kernel_intercept.cc
diff --git a/native_client_sdk/src/libraries/nacl_io/kernel_intercept.cc b/native_client_sdk/src/libraries/nacl_io/kernel_intercept.cc
index b378e8688654037bb04bf1f87134d2e128427ea5..fc590362d384b8bc42c43de3d2b2f5f940ab7e0a 100644
--- a/native_client_sdk/src/libraries/nacl_io/kernel_intercept.cc
+++ b/native_client_sdk/src/libraries/nacl_io/kernel_intercept.cc
@@ -131,6 +131,11 @@ int ki_open(const char *path, int oflag) {
   return s_kp->open(path, oflag);
 }
 
+int ki_pipe(int pipefds[2]) {
+  ON_NOSYS_RETURN(-1);
+  return s_kp->pipe(pipefds);
+}
+
 ssize_t ki_read(int fd, void *buf, size_t nbyte) {
   ON_NOSYS_RETURN(-1);
   return s_kp->read(fd, buf, nbyte);