Re: dd hangs with SIGINT

[Guillaume Chazarain]

Bruno Haible wrote:

> I agree. The real good way to make this work on POSIX systems (without
> assuming multithreading) is to use fork().
>
>  - Let the parent process fork a child process, block the signals SIGHUP,
>    SIGQUIT, SIGPIPE in the parent, and watch the child's exit status.
>    If the exit status of the child is 128 + SIGHUP/SIGQUIT/SIGPIPE,
>    print the statistics.
>  - Let the child process to the real I/O work.
>
> With this approach, you don't install any signal handlers, therefore you
> don't even need to think about which functions are async-signal safe. You
> can use full malloc(), quote(), ngettext(), fprintf() etc. at will.
>  
And how do you handle the SIGINFO thingy with that ?

Regards.

--
Guillaume