USB driver to launch another program

[shadeb26]

I have a few issues. I have a usb kernel driver and I want it to launch another program that will monitor a serial port when the usb device is connected. then i want to close the program when the usb device is disconnected. I also want the driver to create a soft link to the serial port. I know the inner workings of kernel drivers....i just can figure out how to get my driver to exec a program.

please help

[Rubberman]

To exec a program, you either need access to a shell, or you need to be able to fork your own process. A kernel driver has neither, so standard methods will not work. However, you can start a daemon process in normal user space and your driver can signal it to make a kernel call (ioctl) into your driver where you can return the data it needs to start up the monitoring process, etc.

[shadeb26]

thanks rubberman, but there has to be a hack or something that will allow me to start my daemon from the driver (kernel) and also kill it from the kernel. I know of another device driver that does it. I just can't figure out how to do it. and i can't find the guy who did it. Do you know anything about

[Rubberman]

Sorry, but since I've never needed to do anything like that, I don't have a clue. Some judicious google searching might help.

[shadeb26]

indeed...=)