From fe3890688a693fbfa900e32b05e10861fa4167ba Mon Sep 17 00:00:00 2001
From: Jakob Unterwurzacher
Date: Tue, 1 May 2018 23:30:53 +0200
Subject: fusefrontend: xattr: return ENOSYS on unsupported flags

We previously returned EPERM to prevent the kernel from
blacklisting our xattr support once we get an unsupported
flag, but this causes lots of trouble on MacOS:
Cannot save files from GUI apps, see
https://github.com/rfjakob/gocryptfs/issues/229

Returning ENOSYS triggers the dotfiles fallback on MacOS
and fixes the issue.
---
 internal/fusefrontend/xattr.go | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/internal/fusefrontend/xattr.go b/internal/fusefrontend/xattr.go
index f3e7532..36ab4d5 100644
--- a/internal/fusefrontend/xattr.go
+++ b/internal/fusefrontend/xattr.go
@@ -55,7 +55,8 @@ func (fs *FS) SetXAttr(path string, attr string, data []byte, flags int, context
 		return fuse.EPERM
 	}
 	if flags != 0 {
-		return fuse.EPERM
+		// Drop this once https://github.com/pkg/xattr/pull/26 is merged
+		return fuse.ENOSYS
 	}
 	if disallowedXAttrName(attr) {
 		return fuse.EPERM
-- 
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