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Re: Support for st_birthtime
- From: Eric Blake <ebb9 at byu dot net>
- To: James Youngman <jay at gnu dot org>
- Cc: bug-findutils mailing list <bug-findutils at gnu dot org>, cygwin at cygwin dot com
- Date: Sun, 25 Mar 2007 08:20:04 -0600
- Subject: Re: Support for st_birthtime
- References: <c5df85930703241439k678dc1f9y90b1e8565f9c2a28@mail.gmail.com> <4605AC0A.1000905@byu.net> <c5df85930703241601l43954ffcp3a478a545171fe6c@mail.gmail.com> <4605E9D1.5010105@byu.net> <c5df85930703250312n6233fc1rca53aafa71567b3a@mail.gmail.com> <c5df85930703250313g26a70d5fg6537f5ffa5a2f2bf@mail.gmail.com>
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According to James Youngman on 3/25/2007 4:13 AM:
> On 3/25/07, James Youngman <jay@gnu.org> wrote:
>> > st_birthtime (for seconds), or st_birthtim (for struct timespec)
>> > http://cygwin.com/ml/cygwin-cvs/2007-q1/msg00122.html
>
> I forgot to ask, what happens (from the user program's point of view)
> if the file being examined has no creation time information? I think
> MSDOS doesn't record it, for example. Many NFS filesystems don't
> offer it either.
I haven't tested, partly because it is such a new feature of cygwin, and
there are so few existing programs that even try to expose st_birthtime to
the user. MSDOS (meaning FAT) actually DOES record birthtime (it only
records birthtime, mtime, and atime, and lacks POSIX ctime; but outside of
cygwin, Microsoft mistakenly treats birthtime as their ctime in stat).
And part of the joy of it being a CVS development snapshot is that I can
give some feedback back to the cygwin developers - what would you rather
have stat do when btime is not available for a given file?
- --
Don't work too hard, make some time for fun as well!
Eric Blake ebb9@byu.net
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