1 files changed, 10 insertions, 0 deletions
diff --git a/erts/emulator/drivers/win32/win_efile.c b/erts/emulator/drivers/win32/win_efile.c
index dc7add01f7..f5011d11a5 100644
--- a/erts/emulator/drivers/win32/win_efile.c
+++ b/erts/emulator/drivers/win32/win_efile.c
@@ -1558,3 +1558,13 @@ efile_fadvise(Efile_error* errInfo, int fd, Sint64 offset,
     errno = ERROR_SUCCESS;
     return check_error(0, errInfo);
 }
+
+int
+efile_fallocate(Efile_error* errInfo, int fd, Sint64 offset, Sint64 length)
+{
+    /* No file preallocation method available in Windows. */
+    errno = errno_map(ERROR_NOT_SUPPORTED);
+    SetLastError(ERROR_NOT_SUPPORTED);
+
+    return check_error(-1, errInfo);
+}