From c3adf9729de82bba52405e9f20f235b6a009308f Mon Sep 17 00:00:00 2001
From: Jakob Unterwurzacher
Date: Sun, 11 Nov 2018 18:27:37 +0100
Subject: fusefrontend: make ListXAttr symlink-safe on Linux

Uses /proc/self/fd.
---
 internal/fusefrontend/xattr_darwin.go | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

(limited to 'internal/fusefrontend/xattr_darwin.go')

diff --git a/internal/fusefrontend/xattr_darwin.go b/internal/fusefrontend/xattr_darwin.go
index f0b755f..ad81320 100644
--- a/internal/fusefrontend/xattr_darwin.go
+++ b/internal/fusefrontend/xattr_darwin.go
@@ -53,3 +53,17 @@ func (fs *FS) removeXAttr(relPath string, cAttr string, context *fuse.Context) f
 	err = xattr.LRemove(cPath, cAttr)
 	return unpackXattrErr(err)
 }
+
+// This function is NOT symlink-safe because Darwin lacks
+// both flistxattr() and /proc/self/fd.
+func (fs *FS) listXAttr(relPath string, context *fuse.Context) ([]string, fuse.Status) {
+	cPath, err := fs.getBackingPath(relPath)
+	if err != nil {
+		return nil, fuse.ToStatus(err)
+	}
+	cNames, err := xattr.LList(cPath)
+	if err != nil {
+		return nil, unpackXattrErr(err)
+	}
+	return cNames, fuse.OK
+}
-- 
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