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Re: DiskArb DiskChangedCallback bug?



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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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References: 
 >DiskArb DiskChangedCallback bug? (From: Brian Bergstrand <email@hidden>)
 >Re: DiskArb DiskChangedCallback bug? (From: Chris Sarcone <email@hidden>)
 >Re: DiskArb DiskChangedCallback bug? (From: Chris Sarcone <email@hidden>)



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