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/tmpfs/tmpfs.go | 3 +++ 1 file changed, 3 insertions(+) (limited to 'pkg/sentry/fsimpl/tmpfs') diff --git a/pkg/sentry/fsimpl/tmpfs/tmpfs.go b/pkg/sentry/fsimpl/tmpfs/tmpfs.go index cefec8fde..e1439dddb 100644 --- a/pkg/sentry/fsimpl/tmpfs/tmpfs.go +++ b/pkg/sentry/fsimpl/tmpfs/tmpfs.go @@ -81,6 +81,9 @@ func (FilesystemType) Name() string { return Name } +// Release implements vfs.FilesystemType.Release. +func (FilesystemType) Release(ctx context.Context) {} + // FilesystemOpts is used to pass configuration data to tmpfs. // // +stateify savable -- cgit v1.2.3