Re: How to match a logical driver to a physical device

Subject: Re: How to match a logical driver to a physical device
From: Boris Remizov <email@hidden>
Date: Mon, 15 Oct 2007 11:58:13 +0400
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Hello - As I see, you may track the driver stack in your probe() method to find the underlying IOUSBDevice object and then simply getProperty () to obtain its idVendor, idProduct. Try something like:

IOService* YourBlockStorageDriverClass::probe (IOService *provider, SInt32 *score ) { OSString* vendor = 0; OSString* product = 0; ...

while (provider && provider->metaCast ("IOUSBDevice") == 0) provider = provider->getProvider (); if (provider) { vendor = OSDynamicCast (OSString, provider->getProperty ("idVendor)); product = OSDynaicCast (OSString, provider->getProperty ("idProduct")); }

	...
}


On Oct 15, 2007, at 00:34 , Thomas Tempelmann wrote:

I have made a kext that overrides a few methods of a (logical) driver of class IOCDBlockStorageDriver.

Now I need to make sure that this driver only matches on a particular USB device which I can either identify by its vendor and product IDs or by its name as it appears in the IORegistry under "class IOCDMedia".
However, I do not know how to match either of these:
When I simply add the idVendor key and value to the driver's plist file, it appears to be ignored as my driver is not of a class where this matching is performed.

I can also overwrite the probe() function, but again I do not know how to get to these USB device properties in order to check them.
Any hints?
Thomas


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Re: How to match a logical driver to a physical device
From: Thomas Tempelmann <email@hidden>


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  >How to match a logical driver to a physical device (From: Thomas Tempelmann <email@hidden>)




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References:
	>How to match a logical driver to a physical device (From: Thomas Tempelmann <email@hidden>)