diff options
| author | Rahat Mahmood <rahat@google.com> | 2021-03-11 16:47:49 -0800 |
|---|---|---|
| committer | gVisor bot <gvisor-bot@google.com> | 2021-03-11 16:49:36 -0800 |
| commit | c5667022b6617d732e0c0bcb8ca3b58d588ceafb (patch) | |
| tree | c112e83b4dcee9923cb99f1fe33b10251e1e58b2 /pkg/sentry/fsimpl/overlay/filesystem.go | |
| parent | a82bd04e2ab3230a9ed09b297812b58d00784fe5 (diff) | |
Report filesystem-specific mount options.
PiperOrigin-RevId: 362406813
Diffstat (limited to 'pkg/sentry/fsimpl/overlay/filesystem.go')
| -rw-r--r-- | pkg/sentry/fsimpl/overlay/filesystem.go | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/pkg/sentry/fsimpl/overlay/filesystem.go b/pkg/sentry/fsimpl/overlay/filesystem.go index 917709d75..84e37f793 100644 --- a/pkg/sentry/fsimpl/overlay/filesystem.go +++ b/pkg/sentry/fsimpl/overlay/filesystem.go @@ -1764,3 +1764,15 @@ func (fs *filesystem) PrependPath(ctx context.Context, vfsroot, vd vfs.VirtualDe defer fs.renameMu.RUnlock() return genericPrependPath(vfsroot, vd.Mount(), vd.Dentry().Impl().(*dentry), b) } + +// MountOptions implements vfs.FilesystemImpl.MountOptions. +func (fs *filesystem) MountOptions() string { + // Return the mount options from the topmost layer. + var vd vfs.VirtualDentry + if fs.opts.UpperRoot.Ok() { + vd = fs.opts.UpperRoot + } else { + vd = fs.opts.LowerRoots[0] + } + return vd.Mount().Filesystem().Impl().MountOptions() +} |