From mboxrd@z Thu Jan  1 00:00:00 1970
From: =?ISO-8859-1?Q?Roger_Pau_Monn=E9?= <roger.pau@citrix.com>
Subject: Re: [PATCH 05 of 16 RFC] blktap3: Don't check if blktap
 is available
Date: Tue, 30 Oct 2012 10:07:04 +0100
Message-ID: <508F98B8.1030209@citrix.com>
References: <patchbomb.1351098139@makatos-desktop>
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To: Ian Campbell <ian.campbell@citrix.com>
Cc: Thanos Makatos <thanos.makatos@citrix.com>, "xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>
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On 30/10/12 08:41, Ian Campbell wrote:
>>>
>>> Perhaps even on Linux we would want a sanity check that the drivers are
>>> present and loaded etc?
>>
>> We could ensure that the tapdisk binaries are present, apart from that
>> I don't see anything else we could check.
> 
> Could we check for /dev/xen/{evtchn,gntdev,...} or whatever else it
> needs?

We could also check with xc_gnttab_open, which will return an error on
NetBSD.