56 lines
1.5 KiB
Go
56 lines
1.5 KiB
Go
//go:build !windows
|
|
|
|
/*
|
|
Copyright The containerd Authors.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
package bindir
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
"os/exec"
|
|
|
|
"golang.org/x/sys/unix"
|
|
)
|
|
|
|
type process struct {
|
|
cmd *exec.Cmd
|
|
}
|
|
|
|
// Configure the verifier command so that killing it kills all child
|
|
// processes of the verifier process.
|
|
func startProcess(ctx context.Context, cmd *exec.Cmd) (*process, error) {
|
|
// Assign the verifier a new process group so that killing its process group
|
|
// in Cancel() doesn't kill the parent process (containerd).
|
|
cmd.SysProcAttr = &unix.SysProcAttr{Setpgid: true}
|
|
|
|
cmd.Cancel = func() error {
|
|
// Passing a negative PID causes kill(2) to kill all processes in the
|
|
// process group whose ID is cmd.Process.Pid.
|
|
return unix.Kill(-cmd.Process.Pid, unix.SIGKILL)
|
|
}
|
|
|
|
if err := cmd.Start(); err != nil {
|
|
return nil, fmt.Errorf("starting process: %w", err)
|
|
}
|
|
|
|
return &process{
|
|
cmd: cmd,
|
|
}, nil
|
|
}
|
|
|
|
func (p *process) cleanup(ctx context.Context) {}
|