From 64be5de75f42e415198ff5e77de509680b69e0e1 Mon Sep 17 00:00:00 2001
From: Jakob Unterwurzacher
Date: Sun, 19 Dec 2021 14:43:56 +0100
Subject: fusefrontend: allow slashes in xattr names

xattr names have fewer restrictions than file names,
relax the validation.

Fixes https://github.com/rfjakob/gocryptfs/issues/627
---
 internal/nametransform/names_test.go | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

(limited to 'internal/nametransform/names_test.go')

diff --git a/internal/nametransform/names_test.go b/internal/nametransform/names_test.go
index b4e98d4..3c26c43 100644
--- a/internal/nametransform/names_test.go
+++ b/internal/nametransform/names_test.go
@@ -75,3 +75,26 @@ func TestIsValidName(t *testing.T) {
 		}
 	}
 }
+
+func TestIsValidXattrName(t *testing.T) {
+	cases := []struct {
+		in   string
+		want bool
+	}{
+		{"", false},
+		{".", true},
+		{"..", true},
+		{"...", true},
+		{"asdasd/asdasd", true},
+		{"asdasd\000asdasd", false},
+		{"hello", true},
+		{strings.Repeat("x", 255), true},
+		{strings.Repeat("x", 256), true},
+	}
+	for _, c := range cases {
+		have := isValidXattrName(c.in)
+		if (have == nil) != c.want {
+			t.Errorf("isValidXattrName(%q): want %v have %v", c.in, c.want, have)
+		}
+	}
+}
-- 
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