From 577c82f22c6c175240fa52fee560f39aaa7db3a7 Mon Sep 17 00:00:00 2001 From: Dean Deng Date: Tue, 13 Oct 2020 01:11:00 -0700 Subject: [vfs2] Add FilesystemType.Release to avoid reference leaks. Singleton filesystem like devpts and devtmpfs have a single filesystem shared among all mounts, so they acquire a "self-reference" when initialized that must be released when the entire virtual filesystem is released at sandbox exit. PiperOrigin-RevId: 336828852 --- pkg/sentry/fsimpl/host/host.go | 3 +++ 1 file changed, 3 insertions(+) (limited to 'pkg/sentry/fsimpl/host') diff --git a/pkg/sentry/fsimpl/host/host.go b/pkg/sentry/fsimpl/host/host.go index da1e3bf4b..698e913fe 100644 --- a/pkg/sentry/fsimpl/host/host.go +++ b/pkg/sentry/fsimpl/host/host.go @@ -151,6 +151,9 @@ func (filesystemType) Name() string { return "none" } +// Release implements vfs.FilesystemType.Release. +func (filesystemType) Release(ctx context.Context) {} + // NewFilesystem sets up and returns a new hostfs filesystem. // // Note that there should only ever be one instance of host.filesystem, -- cgit v1.2.3