__NR_setdomainname
__SYSCALL(__NR_setdomainname, sys_setdomainname)
case __NR_setdomainname:
__SYSCALL(__NR_setdomainname, sys_setdomainname)
syscall(__NR_setdomainname, &buf, -2L);
syscall(__NR_setdomainname, 0, -3L);
syscall(__NR_setdomainname, ~0L, -4L);