diff options
| author | Dean Deng <deandeng@google.com> | 2020-10-13 01:11:00 -0700 |
|---|---|---|
| committer | gVisor bot <gvisor-bot@google.com> | 2020-10-13 01:13:22 -0700 |
| commit | 577c82f22c6c175240fa52fee560f39aaa7db3a7 (patch) | |
| tree | 9caece3c29217370e14e7c89de4a043e33df9a0f /pkg/sentry/vfs/anonfs.go | |
| parent | fc7df53222e56fdce7dee002f1fb4c332de616af (diff) | |
[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
Diffstat (limited to 'pkg/sentry/vfs/anonfs.go')
| -rw-r--r-- | pkg/sentry/vfs/anonfs.go | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/pkg/sentry/vfs/anonfs.go b/pkg/sentry/vfs/anonfs.go index bdfd3ca8f..7ad0eaf86 100644 --- a/pkg/sentry/vfs/anonfs.go +++ b/pkg/sentry/vfs/anonfs.go @@ -61,11 +61,14 @@ func (anonFilesystemType) GetFilesystem(context.Context, *VirtualFilesystem, *au panic("cannot instaniate an anon filesystem") } -// Name implemenents FilesystemType.Name. +// Name implements FilesystemType.Name. func (anonFilesystemType) Name() string { return "none" } +// Release implemenents FilesystemType.Release. +func (anonFilesystemType) Release(ctx context.Context) {} + // anonFilesystem is the implementation of FilesystemImpl that backs // VirtualDentries returned by VirtualFilesystem.NewAnonVirtualDentry(). // |