fs: throw errors from fs.linkSync in JS

PR-URL: https://github.com/nodejs/node/pull/18348
Refs: https://github.com/nodejs/node/issues/18106
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

1 files changed, 9 insertions, 2 deletions

diff --git a/lib/fs.js b/lib/fs.js
index c75a8501b6..4a69ef9bc4 100644
--- a/lib/fs.js
+++ b/lib/fs.js
@@ -1280,8 +1280,15 @@ fs.linkSync = function(existingPath, newPath) {
   nullCheck(newPath);
   validatePath(existingPath, 'existingPath');
   validatePath(newPath, 'newPath');
-  return binding.link(pathModule.toNamespacedPath(existingPath),
-                      pathModule.toNamespacedPath(newPath));
+
+  const ctx = { path: existingPath, dest: newPath };
+  const result = binding.link(pathModule.toNamespacedPath(existingPath),
+                              pathModule.toNamespacedPath(newPath),
+                              undefined, ctx);
+  if (ctx.errno !== undefined) {
+    throw new errors.uvException(ctx);
+  }
+  return result;
 };
 
 fs.unlink = function(path, callback) {