Re: [PATCH] tty: vt: keyboard: do not copy an extra-byte in copy_to_user

Ajay Garg
2021-11-10T08:57:51Z

>
> Ajay wants to be safe and he thinks, that relying on fact, that
> strlen(func_table[kb_func]) < sizeof(user_kdgkb->kb_string) is not good
> approach, since it's external for vt_do_kdgkb_ioctl. (I hope, I've
> explained his idea in the right way)
>

That's right Pavel.
Every function must work correctly as it "advertises", instead of
relying on "chancy correctness" of the calls leading to the method.