From mboxrd@z Thu Jan  1 00:00:00 1970
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In-Reply-To: <73CCEA09-C492-439D-9E8A-AA2BA9CB93DB@ar.aichi-u.ac.jp>
References: <73CCEA09-C492-439D-9E8A-AA2BA9CB93DB@ar.aichi-u.ac.jp>
Date: Thu, 17 Dec 2015 11:40:55 +0000
Message-ID: <CAK9Gx1c0YgDawi59=mct2BsZvNrKFLimACJ0GF2SKY9Ja+QBzQ@mail.gmail.com>
From: Peter Hull <peterhull90@gmail.com>
To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
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Subject: Re: [9fans] bug in exportfs
Topicbox-Message-UUID: 7a9437e6-ead9-11e9-9d60-3106f5b1d025

On Wed, Dec 16, 2015 at 11:31 PM, arisawa <arisawa@ar.aichi-u.ac.jp> wrote:
> It seems cpu command is buggy in -P option.
> the sources of the problem is in command option -P of exportfs.

I had a look at the manpage for exportfs(4), it says: "For a file to
be exported, all lines with a prefix + must match and all those with
prefix - must not match." (http://man.9front.org/4/exportfs)

So isn't the original code correct according to the manpage? If any of
the regexps in 'include' fail to match, the function returns -1, then
if any in 'exclude' do match, -1 is returned.

> patternfile sample
> + /usr/arisawa
> + /usr/glenda
> - /adm
> - /sys/log
> - /mail
> - /usr/.*
>
Is this sample invalid - no path could match /usr/arisawa and
/usr/glenda at the same time?

Pete