From 73e16cff9e0d4a802937444bebb562458548241d Mon Sep 17 00:00:00 2001
From: Yury Smolsky <yury@smolsky.by>
Date: Tue, 27 Feb 2018 18:02:18 +0200
Subject: [PATCH] imports: show detailed error when directory cannot be opened

Fixes golang/go#24154

Change-Id: I2834cc2578e911499cbce5412fe6a9041248794d
Reviewed-on: https://go-review.googlesource.com/97359
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
---
 imports/fastwalk_unix.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/imports/fastwalk_unix.go b/imports/fastwalk_unix.go
index db6ee8dafb..e0fc8b7ce6 100644
--- a/imports/fastwalk_unix.go
+++ b/imports/fastwalk_unix.go
@@ -24,7 +24,7 @@ const unknownFileMode os.FileMode = os.ModeNamedPipe | os.ModeSocket | os.ModeDe
 func readDir(dirName string, fn func(dirName, entName string, typ os.FileMode) error) error {
 	fd, err := syscall.Open(dirName, 0, 0)
 	if err != nil {
-		return err
+		return &os.PathError{Op: "open", Path: dirName, Err: err}
 	}
 	defer syscall.Close(fd)