FBSD_1.0 {
rfork_thread;
amd64_get_fsbase;
amd64_get_gsbase;
amd64_set_fsbase;
amd64_set_gsbase;
};
FBSD_1.6 {
x86_pkru_get_perm;
x86_pkru_set_perm;
x86_pkru_protect_range;
x86_pkru_unprotect_range;
FBSDprivate_1.0 {
_vfork;