iokit

问题 I used this import definition in OSX32 successfully: uses MacApi.ObjectiveC, MacApi.Foundation, Macapi.CoreFoundation, Macapi.Mach, Macapi.IOKit; type io_iterator_t = io_object_t; io_name_t = array[0..127] of AnsiChar; function IORegistryEntrySearchCFProperty(entry: io_registry_entry_t; plane: io_name_t; key: CFStringRef; allocator: CFAllocatorRef; options: IOOptionBits): CFTypeRef; cdecl; external libIOKit name _PU + 'IORegistryEntrySearchCFProperty'; function IOServiceGetMatchingServices

问题 I did small app to allow quickly change screen resolutions on multiple monitors. I want to show product name as title of the monitor, and it's very simple to find using this code: NSDictionary *deviceInfo = (__bridge NSDictionary *)IODisplayCreateInfoDictionary(CGDisplayIOServicePort(dispID), kIODisplayOnlyPreferredName); NSDictionary *localizedNames = [deviceInfo objectForKey:[NSString stringWithUTF8String:kDisplayProductName]]; if([localizedNames count] > 0) { _title = [localizedNames

问题 I did small app to allow quickly change screen resolutions on multiple monitors. I want to show product name as title of the monitor, and it's very simple to find using this code: NSDictionary *deviceInfo = (__bridge NSDictionary *)IODisplayCreateInfoDictionary(CGDisplayIOServicePort(dispID), kIODisplayOnlyPreferredName); NSDictionary *localizedNames = [deviceInfo objectForKey:[NSString stringWithUTF8String:kDisplayProductName]]; if([localizedNames count] > 0) { _title = [localizedNames

问题 I have allocated memory in my application and passed its pointer and size to IOConnectCallStructMethod . Using IOMemoryDescriptor::CreateMapping I have then mapped this memory to the DriverKit system extension process, and it is possible to write to this mapped memory location and read the data from my application. I would now like to do something similar for memory that is allocated in the system extension, and then map it to the application that is using the system extension. I would like

问题 I have allocated memory in my application and passed its pointer and size to IOConnectCallStructMethod . Using IOMemoryDescriptor::CreateMapping I have then mapped this memory to the DriverKit system extension process, and it is possible to write to this mapped memory location and read the data from my application. I would now like to do something similar for memory that is allocated in the system extension, and then map it to the application that is using the system extension. I would like

问题 How is it possible for code to distinguish between external USB hard drives and solid-state drives on the one hand versus USB sticks on the other hand? I'm not familiar with macOS APIs (or system calls, interrupts, messaging, and other things) but I'm guessing it would be in I/O Kit or Disk Arbitration? On the Terminal command line you can use system_profiler SPUSBDataType and see this information listed under "Removable Media". 回答1: You can get the removable/ejectable information directly

问题 How is it possible for code to distinguish between external USB hard drives and solid-state drives on the one hand versus USB sticks on the other hand? I'm not familiar with macOS APIs (or system calls, interrupts, messaging, and other things) but I'm guessing it would be in I/O Kit or Disk Arbitration? On the Terminal command line you can use system_profiler SPUSBDataType and see this information listed under "Removable Media". 回答1: You can get the removable/ejectable information directly

问题 I'm migrating my PCI driver from iokit to dext using PCIDriverkit. I download the "MyUserUSBInterfaceDriver" sample, modify compile, sign, and run. the dext can load, but there are many errors: kernel: serviceMatchesCDHash: required cdhash 3...3 in personality does not match service kernel: DK: IOUserServer(sc.knight.MyUserUSBInterfaceDriver-0x1000064ac)::exit(CDHash check failed) kernel: (above:This error Repeat 5 times) ............ ............ ............ ............ ............ ......

问题 I need to get CPU temperature using Swift, but I can't find any information except for this. I think that I should use IOKit.framework but again there's no much information about it. 回答1: using https://github.com/lavoiesl/osx-cpu-temp/blob/master/smc.c I got it to work. You have to do a few things: Simplify main() to something else: double calculate() { SMCOpen(); double temperature = SMCGetTemperature(SMC_KEY_CPU_TEMP); SMCClose(); temperature = convertToFahrenheit(temperature); return

来源： https://stackoverflow.com/questions/48832072/iocreateplugininterfaceforservice-returns-mysterious-error