need example ioctl's in device driver

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1

Hi experts,

I’m porting an device driver from linux to QNX using the iomgr example.

I have problems to port the ioctl’s, it seems that they are quite
different under QNX to handle.
Sending the ioctl to the driver works fine but I have no idea how to get
data back to the application program.

Does anybody have some example code or any useful hints for me?

Thanks in advance

Georg Ertl

2

Georg Ertl <geer@pfaffenhofen.de> wrote:

Hi experts,

I’m porting an device driver from linux to QNX using the iomgr example.

I have problems to port the ioctl’s, it seems that they are quite
different under QNX to handle.
Sending the ioctl to the driver works fine but I have no idea how to get
data back to the application program.

Does anybody have some example code or any useful hints for me?

Hint – if it is anything like Neutrino, you need to put the data
for the ioctl after the ioctl structure in the Reply() data.

-David

QNX Training Services
dagibbs@qnx.com