diff options
Diffstat (limited to 'pkg')
| -rwxr-xr-x | pkg/sentry/vfs/mount.go | 7 | ||||
| -rwxr-xr-x | pkg/sentry/vfs/vfs_state_autogen.go | 2 |
2 files changed, 9 insertions, 0 deletions
diff --git a/pkg/sentry/vfs/mount.go b/pkg/sentry/vfs/mount.go index 05f6233f9..4b68cabda 100755 --- a/pkg/sentry/vfs/mount.go +++ b/pkg/sentry/vfs/mount.go @@ -24,6 +24,9 @@ import ( "gvisor.dev/gvisor/pkg/syserror" ) +// lastMountID is used to allocate mount ids. Must be accessed atomically. +var lastMountID uint64 + // A Mount is a replacement of a Dentry (Mount.key.point) from one Filesystem // (Mount.key.parent.fs) with a Dentry (Mount.root) from another Filesystem // (Mount.fs), which applies to path resolution in the context of a particular @@ -48,6 +51,9 @@ type Mount struct { fs *Filesystem root *Dentry + // ID is the immutable mount ID. + ID uint64 + // key is protected by VirtualFilesystem.mountMu and // VirtualFilesystem.mounts.seq, and may be nil. References are held on // key.parent and key.point if they are not nil. @@ -87,6 +93,7 @@ type Mount struct { func newMount(vfs *VirtualFilesystem, fs *Filesystem, root *Dentry, mntns *MountNamespace, opts *MountOptions) *Mount { mnt := &Mount{ + ID: atomic.AddUint64(&lastMountID, 1), vfs: vfs, fs: fs, root: root, diff --git a/pkg/sentry/vfs/vfs_state_autogen.go b/pkg/sentry/vfs/vfs_state_autogen.go index 036defa97..d0221f0ff 100755 --- a/pkg/sentry/vfs/vfs_state_autogen.go +++ b/pkg/sentry/vfs/vfs_state_autogen.go @@ -114,6 +114,7 @@ func (x *Mount) save(m state.Map) { m.Save("vfs", &x.vfs) m.Save("fs", &x.fs) m.Save("root", &x.root) + m.Save("ID", &x.ID) m.Save("key", &x.key) m.Save("ns", &x.ns) m.Save("refs", &x.refs) @@ -128,6 +129,7 @@ func (x *Mount) load(m state.Map) { m.Load("vfs", &x.vfs) m.Load("fs", &x.fs) m.Load("root", &x.root) + m.Load("ID", &x.ID) m.Load("key", &x.key) m.Load("ns", &x.ns) m.Load("refs", &x.refs) |