//go:build unix

package tools

import (
	"os/exec"
	"syscall"
)

// setPgroup puts the bash child in its own process group so a timeout or
// cancel kills the whole tree, not just the shell (crush/maki gotcha:
// plain Kill orphans grandchildren).
func setPgroup(c *exec.Cmd) {
	c.SysProcAttr = &syscall.SysProcAttr{Setpgid: true}
}

// killGroup SIGKILLs the child's process group after Wait; no-op if the
// child never started.
func killGroup(c *exec.Cmd) {
	if c.Process == nil {
		return
	}
	_ = syscall.Kill(-c.Process.Pid, syscall.SIGKILL)
}