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From: "Randy Brukardt" <randy@rrsoftware.com>
Newsgroups: comp.lang.ada
Subject: Re: ZFS/BtrFS bindings
Date: Tue, 16 Jul 2013 17:18:05 -0500
Organization: Jacob Sparre Andersen Research & Innovation
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Date: 2013-07-16T17:18:05-05:00
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"Jeffrey Carter" <spam.jrcarter.not@spam.not.acm.org> wrote in message 
news:ks2hka$94b$1@dont-email.me...
> On 07/15/2013 07:55 PM, Dufr wrote:
>>
>> So, my next question is: how much would a hired programmer need to write
>> one-platform-only (say, Windows or Linux) Ada bindings for *some* ZFS
>> functions? I am saying "some" because what I actually need is only the
>> support for extended attributes (xattr). Any guess?
>
> That would depend on how screwed up the C that you're binding to is. I 
> wouldn't think it would be very much of an effort, but C is often far more 
> complicated than it needs to be.

I'm presuming that you want to get xattr of files that are open in Ada. That 
means that you have to have some cooperation from your vendor, in that Ada 
does not make implementation artifacts like file handles available. Some 
implementations might have a way to get those, some might not.

The problem is much easier if you just want to get xattr based on file 
names, because then one could write a binding to do just that, and avoid any 
interaction with the Ada implementation.

                            Randy.