fs: properly handle fd passed to truncate()

Currently, fs.truncate() silently fails when a file descriptor
is passed as the first argument. This commit changes this
behavior to properly call fs.ftruncate().

PR-URL: https://github.com/joyent/node/pull/9161
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Timothy J Fontaine <tjfontaine@gmail.com>

1 files changed, 1 insertions, 3 deletions

diff --git a/lib/fs.js b/lib/fs.js
index 5345afa36..bd9fde680 100644
--- a/lib/fs.js
+++ b/lib/fs.js
@@ -639,9 +639,7 @@ fs.renameSync = function(oldPath, newPath) {
 
 fs.truncate = function(path, len, callback) {
   if (util.isNumber(path)) {
-    var req = new FSReqWrap();
-    req.oncomplete = callback;
-    return fs.ftruncate(path, len, req);
+    return fs.ftruncate(path, len, callback);
   }
   if (util.isFunction(len)) {
     callback = len;