Re: cd-tray immediately closed after it has been opened

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On Mon, Jul 28, 2008 at 10:48, Christian Krause <chkr@xxxxxxxxxxx> wrote:
> David Zeuthen wrote:
>>
>> On Sun, 2008-07-27 at 21:19 +0200, Christian Krause wrote:
>>
>>>
>>> Before this checkin, vol_id was only called for partitioned devices and
>>> so the CD tray stayed open.
>>>
>>
>> Probably vol_id needs to use O_NONBLOCK when opening sr devices. Does
>> that fix it?
>>
>
> Yes, indeed using a patch like this:
>
> diff --git a/extras/volume_id/vol_id.c b/extras/volume_id/vol_id.c
> index 5c4e05d..3dc9f95 100644
> --- a/extras/volume_id/vol_id.c
> +++ b/extras/volume_id/vol_id.c
> @@ -224,7 +224,7 @@ int main(int argc, char *argv[])
>               goto exit;
>       }
>
> -       fd = open(node, O_RDONLY);
> +       fd = open(node, O_RDONLY | O_NONBLOCK);
>       if (fd < 0) {
>               fprintf(stderr, "%s: error opening volume\n", node);
>               rc = 2;
>
> fixes the problem, too. But it looks like that this is discouraged:
>
> http://gitweb.freedesktop.org/?p=hal.git;a=commit;h=2dab6d1b27a160895e99f3a7111a78aff68baff3

Just to check if its the kernel that closes the tray on open(), can you set:
  /proc/sys/dev/cdrom/autoclose
to "0" and try again?

Thanks,
Kay
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