Alan Cox napsal(a):
>>> + if (filp->f_op->read == tty_read) {
>>> + disable = 0;
>>> + break;
> Why says a tty will always have f->op->read == tty_read ?
AFAICS from tty_io.c, it will always be tty_read or hung_up_tty_read.
Normal user processes would exit after SIGHUP and not reopen a TTY.
(I have copied the condition from __do_SAK(). That of course doesn't
mean it's correct.)
Mirek
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