From a0de1966c9545bb6bd428928d84ccd6021d463ef Mon Sep 17 00:00:00 2001
From: abushwang <abushwangs@gmail.com>
Date: Mon, 25 Nov 2024 17:49:13 +0800
Subject: [PATCH] fuse passthrough: fix PassthroughFd return wrong num in no
 passthrough model

Signed-off-by: abushwang <abushwangs@gmail.com>
---
 fs/layer/node.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/fs/layer/node.go b/fs/layer/node.go
index 02f9e6488..36d342529 100644
--- a/fs/layer/node.go
+++ b/fs/layer/node.go
@@ -350,6 +350,7 @@ func (n *node) Open(ctx context.Context, flags uint32) (fh fusefs.FileHandle, fu
 	f := &file{
 		n:  n,
 		ra: ra,
+		fd: -1,
 	}
 
 	if n.fs.passThrough {
@@ -473,6 +474,9 @@ func (f *file) Getattr(ctx context.Context, out *fuse.AttrOut) syscall.Errno {
 var _ = (fusefs.FilePassthroughFder)((*file)(nil))
 
 func (f *file) PassthroughFd() (int, bool) {
+	if f.fd <= 0 {
+		return -1, false
+	}
 	return f.fd, true
 }