[alsa-devel] [PATCH] conf: Allow for a directory to be given as a config file.

Colin Guthrie gmane at colin.guthr.ie
Fri Sep 16 10:28:45 CEST 2011

'Twas brillig, and Takashi Iwai at 16/09/11 07:51 did gyre and gimble:
> At Tue, 13 Sep 2011 22:04:00 +0100,
> gmane at colin.guthr.ie wrote:
>> From: Colin Guthrie <colin at mageia.org>
>> When this is done, *.conf files can be placed in that directory and they
>> will be processed by as if they were included directly.
>> A directory (typically /usr/share/alsa/alsa.conf.d/) has been
>> added into the distribution.
> In this code, the error behavior looks inconsistent.
> In a config file case (no directory), the opening failure gives only
> the error message but it continues.  In the case of directory, both
> the open-error and the parse-error are treated as the fatal error.

Ahh right, yeah, I need to reset err = 0 after the SND_ERR message in
that case. Good catch.

> OK, it's basically a mistake in the original code -- the open-error
> should be handled as a fatal error more consistently.  But, still,
> the old error code was overridden by the new entry, so the error in
> the middle of the file-entry loop is ignored.  That looks no good.


> And, the code becomes with too deep indentation.  This indicates
> already something wrong.  Split a new function to handle the directory
> case.  And create a small function to handle below code:
> 	err = snd_input_stdio_open(&in, filename, "r");
> 	if (err >= 0) {
> 		err = snd_config_load(root, in);
> 		snd_input_close(in);
> 		if (err < 0)
> 			SNDERR("%s may be old or corrupted: consider to remove or fix it", filename);
> 	} else
> 		SNDERR("cannot access file %s", filename);
> 	return err;
> and use it from both a single file and files-in-directory cases.

Cool will do. Was going to do that anyway, but wasn't sure if the amount
of code was over the "threshold" for a separate function :) (I
appreciate that the "threshold" is very subjective.



Colin Guthrie

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