From 3a5a783b54a913294658041f22066e0618ee91f3 Mon Sep 17 00:00:00 2001
From: Jakob Unterwurzacher
Date: Tue, 5 Sep 2017 21:47:05 +0200
Subject: macos: don't throw IO errors because of .DS_Store files

MacOS creates lots of these files, and if the directory is otherwise
empty, we would throw an IO error to the unsuspecting user.

With this patch, we log a warning, but otherwise pretend we did not
see it.

Mitigates https://github.com/rfjakob/gocryptfs/issues/140
---
 internal/fusefrontend/fs_dir.go | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/internal/fusefrontend/fs_dir.go b/internal/fusefrontend/fs_dir.go
index c87cc02..0252c2a 100644
--- a/internal/fusefrontend/fs_dir.go
+++ b/internal/fusefrontend/fs_dir.go
@@ -7,6 +7,7 @@ import (
 	"io"
 	"os"
 	"path/filepath"
+	"runtime"
 	"sync"
 	"syscall"
 
@@ -324,6 +325,11 @@ func (fs *FS) OpenDir(dirName string, context *fuse.Context) ([]fuse.DirEntry, f
 		if err != nil {
 			tlog.Warn.Printf("OpenDir %q: invalid entry %q: %v",
 				cDirName, cName, err)
+			if runtime.GOOS == "darwin" && cName == ".DS_Store" {
+				// MacOS creates lots of these files. Log the warning but don't
+				// increment errorCount - does not warrant returning EIO.
+				continue
+			}
 			errorCount++
 			continue
 		}
-- 
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