FS_VNODE_CAPABILITY_READ
CLEAR_UNSUPPORTED(FS_VNODE_CAPABILITY_READ, read);
if (!HasVNodeCapability(vnode, FS_VNODE_CAPABILITY_READ))
fNodeCapabilities.Set(FS_VNODE_CAPABILITY_READ, fFSOps->read);
fNodeCapabilities.Set(FS_VNODE_CAPABILITY_READ, fLowLevelOps.read);
fNodeCapabilities.Set(FS_VNODE_CAPABILITY_READ, fFS->ops.read);
capabilities.Set(FS_VNODE_CAPABILITY_READ, ops->read);