Re: lynx-dev Problem with ^Z suspending

[Kari E. Hurtta]

Klaus Weide:
> The SIGTSTP signal handler could prevent this kind of thing by
>  - blocking SIGTTOU (and maybe others) while doing its
>    output thing (and checking returns from write and ioctl); or

With POSIX's sigaction is is easy to block SIGTTOU when SIGTSTP
is invoked:

  new_sigtstp.sa_handler = handle_sigtstp;
  sigemptyset(&new_sigtstp.sa_mask);
  sigaddset(&new_sigtstp.sa_mask,SIGTTOU);
  new_sigtstp.sa_flags = 0;
  if (-1 == sigaction(SIGTSTP,&new_sigtstp,&old_sigtstp))
    ...

That causes that SIGTTOU is also blocked during SIGTSTP processing.

/ Kari Hurtta