1 files changed, 18 insertions, 0 deletions
diff --git a/winsup/cygwin/syscalls.cc b/winsup/cygwin/syscalls.cc
index af2974413..e7a698bb7 100644
--- a/winsup/cygwin/syscalls.cc
+++ b/winsup/cygwin/syscalls.cc
@@ -2840,3 +2840,21 @@ endusershell ()
     fclose (shell_fp);
   shell_index = 0;
 }
+
+extern "C" void
+flockfile (FILE *file)
+{
+  _flockfile (file);
+}
+
+extern "C" int
+ftrylockfile (FILE *file)
+{
+  return _ftrylockfile (file);
+}
+
+extern "C" void
+funlockfile (FILE *file)
+{
+  _funlockfile (file);
+}