From mboxrd@z Thu Jan  1 00:00:00 1970
Date: Mon, 25 Feb 2013 02:34:15 -0800
From: Anthony Martin <ality@pbrane.org>
To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
Message-ID: <20130225103415.GA21986@dinah>
References: <06B26204-D2D9-4438-8EB3-603B88F8B03C@ar.aichi-u.ac.jp>
	<6b8af56ccf29a8e293aefcc39c79576f@rei2.9hal>
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Subject: Re: [9fans] curious mtime of cwfs
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cinap_lenrek@gmx.de once said:
> i'm not sure. if you touch an existing file, then it makes sense
> that the files mtime gets updated, not the whole directory.
>
> wstat() and write() on a file only update the files mtime, not
> the parent directory.
>
> however creating a new file or deleting a file from a directory
> does change the directories mtime. (the dump change makes it
> consistent with that).

>>From stat(5):

    For a plain file, mtime is the time of the most recent
    create, open with truncation, or write; for a directory
    it is the time of the most recent remove, create, or
    wstat of a file in the directory.

Cheers,
  Anthony