diff options
| author | Nicolas Lacasse <nlacasse@google.com> | 2020-03-27 16:53:28 -0700 |
|---|---|---|
| committer | gVisor bot <gvisor-bot@google.com> | 2020-03-27 16:56:16 -0700 |
| commit | 10f2c8db915df14102e3f4d9efcfce372c90707a (patch) | |
| tree | 04fd485ab80b8d0a49d2e241fe153afc8e56ec48 /pkg/sentry/vfs/anonfs.go | |
| parent | 2a4aff7f7ea62e4aae1b175262b68a8212826176 (diff) | |
Add FilesystemType.Name method, and FilesystemType field to Filesystem struct.
Both have analogues in Linux:
* struct file_system_type has a char *name field.
* struct super_block keeps a pointer to the file_system_type.
These fields are necessary to support the `filesystem type` field in
/proc/[pid]/mountinfo.
PiperOrigin-RevId: 303434063
Diffstat (limited to 'pkg/sentry/vfs/anonfs.go')
| -rw-r--r-- | pkg/sentry/vfs/anonfs.go | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/pkg/sentry/vfs/anonfs.go b/pkg/sentry/vfs/anonfs.go index f58867066..d1f6dfb45 100644 --- a/pkg/sentry/vfs/anonfs.go +++ b/pkg/sentry/vfs/anonfs.go @@ -51,6 +51,19 @@ const ( anonFileGID = auth.RootKGID ) +// anonFilesystemType implements FilesystemType. +type anonFilesystemType struct{} + +// GetFilesystem implements FilesystemType.GetFilesystem. +func (anonFilesystemType) GetFilesystem(context.Context, *VirtualFilesystem, *auth.Credentials, string, GetFilesystemOptions) (*Filesystem, *Dentry, error) { + panic("cannot instaniate an anon filesystem") +} + +// Name implemenents FilesystemType.Name. +func (anonFilesystemType) Name() string { + return "none" +} + // anonFilesystem is the implementation of FilesystemImpl that backs // VirtualDentries returned by VirtualFilesystem.NewAnonVirtualDentry(). // |