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    SubjectRe: [PATCH 02/18] xstat: Add a pair of system calls to make extended file stats available [ver #6]

    On Thursday 2010-07-22 17:14, Linus Torvalds wrote:
    >>>
    >>> It is?  It's called crtime in Ext4.  st_btime, however, would be compatible
    >>> with BSD's stat, and Samba would just use it by way of autoconf magic if it
    >>> appeared.
    >>
    >> Samba has the following check:
    >> # recent FreeBSD, NetBSD have creation timestamps called birthtime:
    >> AC_CHECK_MEMBERS([struct stat.st_birthtimespec.tv_nsec])
    >> AC_CHECK_MEMBERS([struct stat.st_birthtime], AC_CHECK_MEMBERS([struct stat.st_birthtimensec]))
    >>
    >> and the supporting code around that. "birth" might also be
    >> where the "b" comes from :-)
    >
    >Oh wow. And all of this just convinces me that we should _not_ do any
    >of this, since clearly it's all totally useless and people can't even
    >agree on a name.
    >
    >Let's wait five years and see if there is actually any consensus on it
    >being needed and used at all, rather than rush into something just
    >because "we can".

    There just is no way currently to store creation times. Abusing ctimes
    for write-once archives also stops working once you rsync it from one
    place to another. (Which brings me to the side question of why
    the ctime isn't settable through futimesnat.)
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