sys_unlinkat
error = sys_unlinkat(l, &ua, retval);
return sys_unlinkat(l, &ua, retval);
.sy_call = (sy_call_t *)sys_unlinkat
extern sy_call_t sys_unlinkat;
{ 471, sys_unlinkat },
check_syscall_args(sys_unlinkat)
int sys_unlinkat(struct lwp *, const struct sys_unlinkat_args *, register_t *);