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moby--moby/libcontainerd/process_windows.go

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package libcontainerd
import (
"io"
"github.com/Microsoft/hcsshim"
"github.com/docker/docker/pkg/ioutils"
)
// process keeps the state for both main container process and exec process.
type process struct {
processCommon
// Platform specific fields are below here.
// commandLine is to support returning summary information for docker top
commandLine string
hcsProcess hcsshim.Process
}
func openReaderFromPipe(p io.ReadCloser) io.Reader {
r, w := io.Pipe()
go func() {
if _, err := io.Copy(w, p); err != nil {
r.CloseWithError(err)
}
w.Close()
p.Close()
}()
return r
}
func createStdInCloser(pipe io.WriteCloser, process hcsshim.Process) io.WriteCloser {
return ioutils.NewWriteCloserWrapper(pipe, func() error {
if err := pipe.Close(); err != nil {
return err
}
// We do not need to lock container ID here, even though
// we are calling into hcsshim. This is safe, because the
// only place that closes this process handle is this method.
err := process.CloseStdin()
if err != nil && !hcsshim.IsNotExist(err) {
// This error will occur if the compute system is currently shutting down
if perr, ok := err.(*hcsshim.ProcessError); ok && perr.Err != hcsshim.ErrVmcomputeOperationInvalidState {
return err
}
}
return err
})
}