Hello Everyone,
I am trying to develop a DriverKit for RAID system, using PCIDriverKit & SCSIControllerDriverKit framework. The driver can detect the Vendor ID and Device ID. But before communicating to the RAID system, I would like to simulate a virtual Volume using a memory block to talk with macOS.
In the UserInitializeController(), I allocated a 512K memory for a IOBufferMemoryDescriptor* volumeBuffer, but fail to use Map() to map memory for volumeBuffer.
result = ivars->volumeBuffer->Map(
0, // Options: Use default
0, // Offset: Start of the buffer
ivars->volumeSize, // Length: Must not exceed buffer size
0, // Flags: Use default
nullptr, // Address space: Default address space
&mappedAddress // Output parameter
);
Log("Memory mapped completed at address: 0x%llx", mappedAddress); // this line never run
The Log for Map completed never run, just restart to run the Start() and makes this Driver re-run again and again, in the end, the driver eat out macOS's memory and system halt.
Are the parameters for Map() error? or I should not put this code in UserInitializeController()?
Any help is appreciated!
Thanks in advance.
Charles
