SYSCTLBAKFILE
fd = open(SYSCTLBAKFILE, O_WRONLY|O_CREAT|O_TRUNC|O_EXCL,
(void)unlink(SYSCTLBAKFILE);
fd = open(SYSCTLBAKFILE, O_RDONLY);
error = unlink(SYSCTLBAKFILE);
unlink(SYSCTLBAKFILE);
(void)unlink(SYSCTLBAKFILE);
fd = open(SYSCTLBAKFILE, O_RDONLY);
error = unlink(SYSCTLBAKFILE);
unlink(SYSCTLBAKFILE);
fd = open(SYSCTLBAKFILE, O_WRONLY|O_CREAT|O_TRUNC|O_EXCL,