1 files changed, 25 insertions, 0 deletions
diff --git a/iserv/src/GHCi/Utils.hsc b/iserv/src/GHCi/Utils.hsc
new file mode 100644
index 0000000000..b90cfacb5f
--- /dev/null
+++ b/iserv/src/GHCi/Utils.hsc
@@ -0,0 +1,25 @@
+{-# LANGUAGE CPP #-}
+module GHCi.Utils
+    ( getGhcHandle
+    ) where
+
+import Foreign.C
+import GHC.IO.Handle (Handle())
+#ifdef mingw32_HOST_OS
+import GHC.IO.Handle.FD (fdToHandle)
+#else
+import System.Posix
+#endif
+
+#include <fcntl.h>     /* for _O_BINARY */
+
+-- | Gets a GHC Handle File description from the given OS Handle or POSIX fd.
+getGhcHandle :: CInt -> IO Handle
+#ifdef mingw32_HOST_OS
+getGhcHandle handle = _open_osfhandle handle (#const _O_BINARY) >>= fdToHandle
+
+foreign import ccall "io.h _open_osfhandle" _open_osfhandle ::
+    CInt -> CInt -> IO CInt
+#else
+getGhcHandle fd     = fdToHandle $ Fd fd
+#endif