1 files changed, 13 insertions, 13 deletions
diff --git a/internal/acl/perms.go b/internal/acl/perms.go
index fbc99e82..829b134f 100644
--- a/internal/acl/perms.go
+++ b/internal/acl/perms.go
@@ -1,18 +1,18 @@
 package acl
 
-type Perms []Perm
+import "unsafe"
 
-func (ps Perms) String() string {
-	var s = []byte("---")
-	for _, p := range ps {
-		switch p {
-		case Read:
-			s[0] = 'r'
-		case Write:
-			s[1] = 'w'
-		case Execute:
-			s[2] = 'x'
-		}
+// String returns a text representation of perms.
+func (perms Perm) String() string {
+	buf := []byte{'-', '-', '-'}
+	if perms&Read != 0 {
+		buf[0] = 'r'
 	}
-	return string(s)
+	if perms&Write != 0 {
+		buf[1] = 'w'
+	}
+	if perms&Execute != 0 {
+		buf[2] = 'x'
+	}
+	return unsafe.String(unsafe.SliceData(buf), len(buf))
 }