From c4815af9475cc4680c6d598d9c930de892c98aae Mon Sep 17 00:00:00 2001
From: Fabricio Voznika <fvoznika@google.com>
Date: Wed, 8 Jul 2020 17:10:35 -0700
Subject: Add shared mount hints to VFS2

Container restart test is disabled for VFS2 for now.

Updates #1487

PiperOrigin-RevId: 320296401
---
 pkg/sentry/vfs/vfs.go | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'pkg/sentry/vfs/vfs.go')

diff --git a/pkg/sentry/vfs/vfs.go b/pkg/sentry/vfs/vfs.go
index 58c7ad778..522e27475 100644
--- a/pkg/sentry/vfs/vfs.go
+++ b/pkg/sentry/vfs/vfs.go
@@ -123,6 +123,9 @@ type VirtualFilesystem struct {
 
 // Init initializes a new VirtualFilesystem with no mounts or FilesystemTypes.
 func (vfs *VirtualFilesystem) Init() error {
+	if vfs.mountpoints != nil {
+		panic("VFS already initialized")
+	}
 	vfs.mountpoints = make(map[*Dentry]map[*Mount]struct{})
 	vfs.devices = make(map[devTuple]*registeredDevice)
 	vfs.anonBlockDevMinorNext = 1
-- 
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