[OpenIndiana-discuss] sd-config-list= vid/pid string syntax in sd.conf

[Reginald Beardsley]

Given the size limits on vid/pid I don't think shell style wildcards would consume any more space.  RE probably would and would certainly require significant text segment space.

The present implementation does a substring match but only if both the first and last character of the string in sd.conf are * which is very counter to expectations.

Reg

--------------------------------------------
On Sun, 3/30/14, Andrew Gabriel <illumos at cucumber.demon.co.uk> wrote:

 Subject: Re: [OpenIndiana-discuss] sd-config-list= vid/pid string syntax in sd.conf
 To: openindiana-discuss at openindiana.org
 Date: Sunday, March 30, 2014, 11:55 AM
 
 On 29/03/2014 21:15, Reginald
 Beardsley wrote:
 > The string matching logic in sd_sdconf_id_match() in
 sd.c is odd and seems to cause a good bit of
 confusion.  In particular it does not conform to shell
 wildcard rules which I think is what most people would
 expect.
 > 
 > Can anyone point to why the current syntax and
 semantics were chosen?
 > 
 > Does anyone know a reason why it should not conform to
 shell wildcard rules? The alternative is full regular
 expressions, but that seems a bit overkill and possibly
 confusing as well.
 
 Usually done to limit the potential stack usage in the
 kernel, which is a much more limited resource than in user
 space where RE and shell matching are found.
 
 -- Andrew
 
 
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