Hi, I am trying to use the FpIOCtl in the BASEUNIX unit. Guess what? the only thing I get back is -1 !
Is there any example code available on how to talk to a kernel module? The only kernel that I know to talk to is the one that I am trying is the one that I am writing myself. I am not too familiar with writing device drivers in C. Therefore I would apreciate if someone could sent me an example of a SIMPLE "char" module. So far, I could register the device using "register_chrdev(major, name, &fops)" This seems to work, since I then see the driver in: /proc/modules /proc/devices and /sys/modules My next step is to issue an FPIOCTL commant but the return code is -1 and the driver never sees the command. Question: Do I need open a "file deccriptor" in order to communicate using IOCTL? It should not be? I have spent the week-end on this, and failed again ... My self esteem is close to nul at this point. Help please... Thank you Alain Michaud _______________________________________________ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
