Migrating from codeless KEXT to DEXT. Usb interfaces disappeared
Hello everyone,
I'm trying to migrate from KEXT to DEXT. My USB device should not be matched by the classic driver (in the other case, it does not allow to open the device and interface).
I am using a sample USB application for testing.
So, before installing the system extension, I was able to see 1 device and 3 interfaces.
However, when I install the system extension (next), I can not find any interfaces. They seem to be lost.
To search for interfaces I use the command “ioreg -lirc IOUSBHostInterface”.
Any idea why this could happen?
my driver Info.plist file
<plist version="1.0">
<dict>
<key>CFBundleDevelopmentRegion</key>
<string>$(DEVELOPMENT_LANGUAGE)</string>
<key>CFBundleExecutable</key>
<string>$(EXECUTABLE_NAME)</string>
<key>CFBundleIdentifier</key>
<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
<key>CFBundleInfoDictionaryVersion</key>
<string>6.0</string>
<key>CFBundleName</key>
<string>$(PRODUCT_NAME)</string>
<key>CFBundlePackageType</key>
<string>$(PRODUCT_BUNDLE_PACKAGE_TYPE)</string>
<key>CFBundleShortVersionString</key>
<string>1.0</string>
<key>CFBundleVersion</key>
<string>1</string>
<key>IOKitPersonalities</key>
<dict>
<key>MyUserUSBInterfaceDriver</key>
<dict>
<key>CFBundleIdentifier</key>
<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
<key>IOClass</key>
<string>IOService</string>
<key>IOProviderClass</key>
<string>IOUSBHostDevice</string>
<key>IOUserClass</key>
<string>MyUserUSBInterfaceDriver</string>
<key>IOUserServerName</key>
<string>sc.knight.MyUserUSBInterfaceDriver</string>
<key>idProduct</key>
<integer>4</integer>
<key>idVendor</key>
<integer>10978</integer>
</dict>
</dict>
<key>OSBundleUsageDescription</key>
<string>Example user space USB driver</string>
</dict>
</plist>
and driver entitlements file
<plist version="1.0">
<dict>
<key>com.apple.developer.driverkit</key>
<true/>
<key>com.apple.developer.driverkit.transport.usb</key>
<array>
<dict>
<key>idVendor</key>
<integer>10978</integer>
<key>idProduct</key>
<integer>4</integer>
</dict>
</array>
</dict>
</plist>
Results of the "ioreg -lirc IOUSBHostDevice" command after installing the extension.
As you can see... 0 interfaces
admins-MBP:USBApp-updated-master-2 copy admin$ ioreg -lirc IOUSBHostDevice
+-o VXi Point@14300000 <class IORegistryEntry:IOService:IOUSBNub:IOUSBDevice, id 0x100000657, registered, matched, active, busy 0 (210 ms), retain 20>
.......
| }
|
+-o AppleUSBHostLegacyClient <class IORegistryEntry:IOService:AppleUSBHostLegacyClient, id 0x10000065a, !registered, !matched, active, busy 0, retain 8>
| {
| "IOPowerManagement" = {"DevicePowerState"=0,"CurrentPowerState"=1,"CapabilityFlags"=65536,"MaxPowerState"=2,"DriverPowerState"=1}
| }
|
+-o MyUserUSBInterfaceDriver <class IORegistryEntry:IOService, id 0x10000065d, !registered, !matched, active, busy 0, retain 7>
{
......
}
