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From: "Bryn M. Reeves" <bmr@redhat.com>
To: device-mapper development <dm-devel@redhat.com>
Cc: Bart Van Assche <bvanassche@acm.org>
Subject: Re: [PATCH 5/5] libmultipath: Accept "*" as a valid regular expression
Date: Thu, 24 Jul 2014 17:34:07 +0100	[thread overview]
Message-ID: <20140724163407.GD16321@localhost.localdomain> (raw)
In-Reply-To: <20140724165559.000076e3@localhost>

On Thu, Jul 24, 2014 at 04:55:59PM +0200, Sebastian Herbszt wrote:
> Bart Van Assche wrote:
> > Inside libmultipath regcomp() is used to compile regular expressions
> > specified in /etc/multipath.conf. Many multipath.conf examples contain
> > 'product_type "*"'. However, "*" is not a valid POSIX regular expression.
> > Hence this patch that changes the regular expression "*" into ".*".
> > 
> Is this change really required? With patch 4 we now get a proper error:
> multipath.conf +14 parsing failed:            vendor "*"
> multipath.conf +15 parsing failed:            product "*"
> error parsing config file
> 
> I think it should be enough to modify the man page to mention vendor/product
> are both regular expressions. This change might also confuse users since this
> automagic "*" to ".*" only applies to the blacklist exceptions.

Agreed; the examples are broken here so let's fix them rather than add magic
parsing that will only come back to confuse people in the future.

Regards,
Bryn.

  reply	other threads:[~2014-07-24 16:34 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-07-18 12:52 [PATCH 0/5] Five small multipath-tools patches Bart Van Assche
2014-07-18 12:52 ` [PATCH 1/5] ALUA prioritizer: Remove an unused variable Bart Van Assche
2014-07-24 14:37   ` Sebastian Herbszt
2014-07-18 12:53 ` [PATCH 2/5] libmultipath: Simplify read_line() Bart Van Assche
2014-07-18 12:53 ` [PATCH 3/5] libmultipath: Zero-terminate sysfs_attr_get_value() result Bart Van Assche
2014-07-18 12:54 ` [PATCH 4/5] libmultipath: Print line number for which parsing failed Bart Van Assche
2014-07-24 14:44   ` Sebastian Herbszt
2014-07-25  9:15     ` Christophe Varoqui
2014-07-18 12:54 ` [PATCH 5/5] libmultipath: Accept "*" as a valid regular expression Bart Van Assche
2014-07-24 14:55   ` Sebastian Herbszt
2014-07-24 16:34     ` Bryn M. Reeves [this message]
2014-07-25  9:10       ` Christophe Varoqui
2014-07-24  8:29 ` [PATCH 0/5] Five small multipath-tools patches Christophe Varoqui

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