https://man.netbsd.org/NetBSD-5.0/utimes.2 https://man.netbsd.org/NetBSD-6.0/utimensat.2
I have been using UFS2 on NetBSD longer than UFS1 and will continue to do so for the next 10 years. Unless UFS3 is released in that time, if not, I will use UFS2 even longer. Therefore, as in the description, a system call should be added that allows to set all 3 times at once.