Re: DiskArb DiskChangedCallback bug?
Re: DiskArb DiskChangedCallback bug?
- Subject: Re: DiskArb DiskChangedCallback bug?
- From: Brian Bergstrand <email@hidden>
- Date: Mon, 12 Jun 2006 12:58:21 -0500
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On Jun 12, 2006, at 12:49 PM, Chris Sarcone wrote:
Brian --
Nevermind. I was looking at the wrong API.
As for using DARegisterDiskDescriptionChangedCallback() for mounts,
I think that's incorrect. DARegisterDiskDescriptionChangedCallback
() is meant to track disk that are already mounted and changing
either their name or path. I think your really want
DARegisterDiskAppearedCallback().
Hmm, won't that be called when the disk appears in IOKit and not when
it's mounted? I don't really care about the former. Or will it be
called both for attach and mount? If that's the case, then I could
use the volumePath key in the Disk dictionary to determine if it's
being mounted.
Also, if ChangedCallback() is not supposed to be used, then the
documentation should be clarified:
/*!
* @constant kDADiskDescriptionWatchVolumePath
* Predefined CFArray object containing a set of disk description
keys appropriate for
* watching volume mount changes using
DARegisterDiskDescriptionChangedCallback().
*/
extern CFArrayRef kDADiskDescriptionWatchVolumePath;
I take "watching volume mount changes", to mean changing from mounted
- -> unmounted OR vise-versa. "watching volume un-mounts" would be a
better term if that is all ChangedCallback does.
Thanks for the quick response!
-- Chris
On Jun 12, 2006, at 10:42 AM, Chris Sarcone wrote:
Brian --
DARegisterDiskDescriptionChangedCallback(daSession, NULL,
kDADiskDescriptionWatchVolumePath,
DiskArbCallback_ChangeNotification, NULL);
The third argument is supposed to be a CFArrayRef of keys to
watch, not a CFDictionaryRef. You might want to try fixing that,
then retest...
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