1 files changed, 8 insertions, 4 deletions
diff --git a/sys/libn/fs.c b/sys/libn/fs.c
index 5d06997..10cd93e 100644
--- a/sys/libn/fs.c
+++ b/sys/libn/fs.c
@@ -6,7 +6,6 @@
 /*
  * path history
  */
-
 struct Key
 {
     ino_t ino;
@@ -151,9 +150,14 @@ fs·walk(fs·Walker *fs)
             return;
     }
 
-    /* operate on directory if preorder traversal */
-    if (fs->flags & fs·preorder)
-        fs->func(fs->data, fs->base, fs->path, &cwd);
+    /* 
+     * operate on directory first if preorder traversal 
+     * truncate recursion if callback returns an error code
+     */ 
+    if (fs->flags & fs·preorder) {
+        if (fs->func(fs->data, fs->base, fs->path, &cwd))
+            return;
+    }
 
     /* open directory */
     if(!fs->max || fs->lev + 1 < fs->max) {