Group your child processes and kill them at once.
The object created by group.NewCmd() can be used as a drop-in of exec.Cmd.
package main
import (
"github.com/jamesits/go-procgroup"
"os"
"path/filepath"
"time"
)
func main() {
// create a new process group
g, err := procgroup.NewGroup()
if err != nil {
panic(err)
}
// create a new process in the group and launch it
c, err := g.NewCmd()
if err != nil {
panic(err)
}
c.Path = filepath.Join(os.Getenv("WINDIR"), "system32", "cmd.exe")
c.Args = []string{"cmd.exe", "/c", "notepad.exe"} // instruct CMD to create a subprocess
c.Stdin = os.Stdin
c.Stdout = os.Stdout
c.Stderr = os.Stderr
err = c.Start()
if err != nil {
panic(err)
}
defer c.Wait() // you still need to `Wait` for it so that Golang runtime does not leak memory
// wait a while
time.Sleep(3 * time.Second)
// kill all the processes and their child processes in this group
err = g.Terminate(0)
if err != nil {
panic(err)
}
}This library does not offer any level of security, and process grouping is not a security boundary. There is no guarantee that a malicious process cannot break away from its process group. The library only offers a better abstraction for managing long-running service processes and their own child processes.
To ensure a clean cleanup, the child processes you start will be killed automatically if the parent process dies.