On Fri, Apr 25, 2003 at 02:41:12AM -0500, Sriram N.S. wrote: > Hi everyone, > > Am in the process of implementing ioctls for a tty-driver. Any idea as > to what values are used [when the driver routine is invoked] for the > "command" argument in an ioctl call to get/set baud-rate, > flow-control. Am unable to get the exact constant [among those defined > in asm-i386/ioctl.h] corresponding to baud-rate/flow-control. Also how > to manipulate the "arg" of ioctl to update the retrieved value of > baud-rate [for example]. Linux Journal had a few articles a while back from some hack that described the different tty ioctls and what is really needed to implement a working tty driver. They should be available online for free now. If you implement them, please to watch out for the new tiocmget and tiocmset functions in the tty_driver structure for 2.5. These prevent the TIOCMGET and TIOCMSET (and family) ioctl commands from being sent to the tty driver. Hope this helps, greg k-h -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
