diff options
Diffstat (limited to 'pkg/rootlessport/rootlessport_linux.go')
| -rw-r--r-- | pkg/rootlessport/rootlessport_linux.go | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/pkg/rootlessport/rootlessport_linux.go b/pkg/rootlessport/rootlessport_linux.go index 2b51f4e09..6ecd3cf98 100644 --- a/pkg/rootlessport/rootlessport_linux.go +++ b/pkg/rootlessport/rootlessport_linux.go @@ -19,6 +19,7 @@ import ( "io/ioutil" "os" "os/exec" + "os/signal" "syscall" "github.com/containernetworking/plugins/pkg/ns" @@ -101,6 +102,28 @@ func parent() error { return err } + sigC := make(chan os.Signal, 1) + signal.Notify(sigC, syscall.SIGPIPE) + defer func() { + // dummy signal to terminate the goroutine + sigC <- syscall.SIGKILL + }() + go func() { + defer func() { + signal.Stop(sigC) + close(sigC) + }() + + s := <-sigC + if s == syscall.SIGPIPE { + if f, err := os.OpenFile("/dev/null", os.O_WRONLY, 0755); err == nil { + syscall.Dup2(int(f.Fd()), 1) // nolint:errcheck + syscall.Dup2(int(f.Fd()), 2) // nolint:errcheck + f.Close() + } + } + }() + // create the parent driver stateDir, err := ioutil.TempDir(cfg.TmpDir, "rootlessport") if err != nil { @@ -160,6 +183,13 @@ func parent() error { return err } + childErrCh := make(chan error) + go func() { + err := cmd.Wait() + childErrCh <- err + close(childErrCh) + }() + defer func() { if err := syscall.Kill(cmd.Process.Pid, syscall.SIGTERM); err != nil { logrus.WithError(err).Warn("kill child process") @@ -174,6 +204,10 @@ outer: case <-initComplete: logrus.Infof("initComplete is closed; parent and child established the communication channel") break outer + case err := <-childErrCh: + if err != nil { + return err + } case err := <-errCh: if err != nil { return err |