I'm trying to get a codeless kext to prevent the USB Mass Storage stack from
attaching to a device, and for some reason, it isn't having any effect. To the
best of my understanding:
* CFBundleIdentifier should be set to something that will match passively
without loading code, e.g. com.apple.kpi.iokit
* IOProviderClass should be IOUSBInterface because I'm matching to a single
interface on a device that has several.
* For maximum match score, I'm matching against idProduct, idVendor,
bcdDevice, bInterfaceClass, and bInterfaceNumber.
Despite this, the USB Mass Storage driver is still matching the device. I've
pasted my info.plist and an abbreviated copy of the device tree entry for the
device in question.
Any idea what could be going wrong here?
David
<key>IOKitPersonalities</key>
<dict>
<key>SampleUSBFTDIDevice</key>
<dict>
<key>CFBundleIdentifier</key>
<string>com.apple.kpi.iokit</string>
<key>IOClass</key>
<string>IOService</string>
<key>IOProviderClass</key>
<string>IOUSBInterface</string>
<key>bInterfaceClass</key>
<integer>8</integer>
<key>bInterfaceNumber</key>
<integer>2</integer>
<key>bcdDevice</key>
<integer>0</integer>
<key>idProduct</key>
<integer>130</integer>
<key>idVendor</key>
<integer>8236</integer>
</dict>
</dict>
| | | | +-o Transformer Composite Device@14100000 <class IOUSBDevice, id
0x100000542, registered, matched, active, busy 0 (6989 ms), retain 13>
| | | | | {
...
| | | | | }
| | | | |
...
| | | | +-o IOUSBInterface@2 <class IOUSBInterface, id 0x100000549,
registered, matched, active, busy 0 (6646 ms), retain 7>
| | | | | {
| | | | | "IOCFPlugInTypes" =
{"2d9786c6-9ef3-11d4-ad51-000a27052861"="IOUSBFamily.kext/Contents/PlugIns/IOUSBLib.bundle"}
| | | | | "IOUSBMassStorageClass Detached" = 6
| | | | | "bcdDevice" = 0
| | | | | "IOUserClientClass" = "IOUSBInterfaceUserClientV3"
| | | | | "idProduct" = 130
| | | | | "bConfigurationValue" = 1
| | | | | "bInterfaceSubClass" = 6
| | | | | "locationID" = 336592896
| | | | | "idVendor" = 8236
| | | | | "iInterface" = 0
| | | | | "bAlternateSetting" = 0
| | | | | "bInterfaceProtocol" = 80
| | | | | "bInterfaceNumber" = 2
| | | | | "bInterfaceClass" = 8
| | | | | "bNumEndpoints" = 2
| | | | | }
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