ext4 - getting at birth time (file create time) and getting/setting nanosecond time stamps and utime

Sunil Mushran sunil.mushran at oracle.com
Tue Oct 20 14:59:46 MDT 2009

Steve French wrote:
> So, are we ready for Mingming or one of the ext4 developers to propose
> a patch for this via xattrs (I can do a similar one for cifs).
> Sounds like various have said:
> 1) xattrs instead of ioctl
> 2) get of create time allowed by default, but set of create time limited
> But for the second part of this - how should we set nanosecond
> timestamps for the others (or in Samba's case, rounded to 100
> nanoseconds for DCE time) ... a millisecond granularity for utimes is
> a very long time these days.

What's wrong with stat(2)? AFAIK, it supports nanoseconds.

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