FS_VOLUME_CAPABILITY_READ_INDEX_STAT
if (!HasCapability(FS_VOLUME_CAPABILITY_READ_INDEX_STAT))
CLEAR_UNSUPPORTED(FS_VOLUME_CAPABILITY_READ_INDEX_STAT, read_index_stat);
fVolumeCapabilities.Set(FS_VOLUME_CAPABILITY_READ_INDEX_STAT,
fCapabilities.Set(FS_VOLUME_CAPABILITY_READ_INDEX_STAT,