[alsa-devel] [PATCH v2 3/3] topology: A API calls to directly build topology data from templates

[Liam Girdwood]

On Tue, 2015-08-11 at 09:57 +0200, Takashi Iwai wrote:
> On Mon, 10 Aug 2015 20:13:49 +0200,
> Liam Girdwood wrote:

> 
> > +int snd_tplg_build(snd_tplg_t *tplg, const char *outfile)
> > +{
> > +	int err;
> > +
> > +	/* delete any old output files */
> > +	unlink(outfile);
> > +
> > +	tplg->out_fd =
> > +		open(outfile, O_RDWR | O_CREAT, S_IRWXU | S_IRWXG | S_IRWXO);
> > +	if (tplg->out_fd < 0) {
> > +		SNDERR("error: failed to open %s err %d\n",
> > +			outfile, -errno);
> > +		return -errno;
> > +	}
> > +
> > +	err = tplg_build_integ(tplg);
> > +	if (err < 0) {
> > +		SNDERR("error: failed to check topology integrity\n");
> > +		goto out;
> > +	}
> > +
> > +	err = tplg_write_data(tplg);
> > +	if (err < 0) {
> > +		SNDERR("error: failed to write data %d\n", err);
> > +		goto out;
> > +	}
> > +
> > +out:
> > +	close(tplg->out_fd);
> 
> It's a question whether we should unlink automatically at error or
> not.  If we leave the file as is, it should be documented.
> 

The unlink is not really needed so I'll remove it. The file permissions
should be 0600 too, so I'll fix that as well.

Liam