CTL_VFS
mib[0] = CTL_VFS; mib[1] = VFS_GENERIC; mib[2] = VFS_MAXTYPENUM;
name[0] = CTL_VFS;
int mib[2] = { CTL_VFS, VFS_VFSCONF };
SYSCTL_NODE(, CTL_VFS, vfs, CTLFLAG_RW, 0,
name[0] = CTL_VFS;