fs: throw errors from fs.ftruncateSync 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, 5 insertions, 1 deletions

diff --git a/lib/fs.js b/lib/fs.js
index 7087644674..8eaba7984c 100644
--- a/lib/fs.js
+++ b/lib/fs.js
@@ -995,7 +995,11 @@ fs.ftruncateSync = function(fd, len = 0) {
   validateUint32(fd, 'fd');
   validateLen(len);
   len = Math.max(0, len);
-  return binding.ftruncate(fd, len);
+  const ctx = {};
+  binding.ftruncate(fd, len, undefined, ctx);
+  if (ctx.errno !== undefined) {
+    throw new errors.uvException(ctx);
+  }
 };
 
 fs.rmdir = function(path, callback) {