[C] SIGINT + SIGTERM to parent and children

'sup guys?

I have a parent process that at some point forks into at least one child process.
I want to kill everything (parent+children) if the parent or any of its child processes get a SIGINT or SIGTERM.

How can I do this?

I know I have to use stuff from signal.h and probably a mutex(not sure on this?) to flag when it's time to die.

I would appreciate if you guys could help me.

Thank you.

Anon.

set up a signal handler which catches SIGINT and SIGTERM and then uses killpg(0, SIGKILL);.

something like:
void handler(int signal)
{
   killpg(0, SIGKILL);
}
i haven't tested it, but i'm pretty sure it'll work.