Date: Mon, 26 Oct 2020 22:56:34 +0800 From: Ka Ho Ng <khng@freebsdfoundation.org> To: freebsd-arch@freebsd.org Subject: Re: Draft IOCTL commands on sndstat Message-ID: <CAAiyo%2B9Dv0XisY7-6G7pNE-uje=TyTMkg%2Byek8k46LJML53FBA@mail.gmail.com> In-Reply-To: <CAAiyo%2B9Na2iJdE_M-FHbBozzX5WY95EinfdWHXgSZZw3fvzOpw@mail.gmail.com> References: <CAAiyo%2B9Na2iJdE_M-FHbBozzX5WY95EinfdWHXgSZZw3fvzOpw@mail.gmail.com>
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Meanwhile, I was thinking if things sound better that we create another label called `nameunit` to hold something like pcm0, and prepend /dev/ to existing `devnode` string. By doing so, callers only need to directly use the `devnode` string to open the node without the hassle of snprintf/asprintf. Here is a piece of code to enumerate audio devices without error checking with `nameunit` label added: https://gist.github.com/khng300/b9b3ccc86c24691273dc36c85066e2dd Ka Ho On Thu, Oct 22, 2020 at 1:55 AM Ka Ho Ng <khng@freebsdfoundation.org> wrote: > > Hi all, > > I have proposed a set of IOCTLs on sndstat. The IOCTLs are nvlist-based, > and the goal of these IOCTLs aims at eliminating text parsing as a > generic user space API. > Here is the link to the differential: > https://reviews.freebsd.org/D26884. A piece of sample code > is also provided to demonstrate the usage of the IOCTLs. > > Regards, > Ka Ho
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