How can I write to TTY from a kernel module?

Question

First post to SO, so I\'ll try to make the question right.

I\'m making a simple Linux kernel module with the goal of echoing data back to the TTY shell from where th

Answer 1

use tty = get_current_tty(); instead of tty = current->signal->tty;

that's it

you need to lock the tty before accessing it and get_current_tty does it internally

NOTE: get_current_tty is under EXPORT_SYMBOL_GPL, hence your module or code