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//go:build darwin || dragonfly || freebsd || linux || netbsd || openbsd || solaris
package executor
import (
"fmt"
"os"
"syscall"
)
// configure new process group for child process
func (e *UniversalExecutor) setNewProcessGroup() error {
if e.childCmd.SysProcAttr == nil {
e.childCmd.SysProcAttr = &syscall.SysProcAttr{}
}
e.childCmd.SysProcAttr.Setpgid = true
return nil
}
// SIGKILL the process group starting at process.Pid
func (e *UniversalExecutor) killProcessTree(process *os.Process) error {
pid := process.Pid
negative := -pid // tells unix to kill entire process group
signal := syscall.SIGKILL
// If new process group was created upon command execution
// we can kill the whole process group now to cleanup any leftovers.
if e.childCmd.SysProcAttr != nil && e.childCmd.SysProcAttr.Setpgid {
e.logger.Trace("sending sigkill to process group", "pid", pid, "negative", negative, "signal", signal)
if err := syscall.Kill(negative, signal); err != nil && err.Error() != noSuchProcessErr {
return err
}
return nil
}
return process.Kill()
}
// Only send the process a shutdown signal (default INT), doesn't
// necessarily kill it.
func (e *UniversalExecutor) shutdownProcess(sig os.Signal, proc *os.Process) error {
if sig == nil {
sig = os.Interrupt
}
if err := proc.Signal(sig); err != nil && err.Error() != finishedErr {
return fmt.Errorf("executor shutdown error: %v", err)
}
return nil
}
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