github.com/docker/docker@v299999999.0.0-20200612211812-aaf470eca7b5+incompatible/libcontainerd/local/process_windows.go (about)

     1  package local // import "github.com/docker/docker/libcontainerd/local"
     2  
     3  import (
     4  	"io"
     5  	"sync"
     6  
     7  	"github.com/Microsoft/hcsshim"
     8  	"github.com/docker/docker/pkg/ioutils"
     9  )
    10  
    11  type autoClosingReader struct {
    12  	io.ReadCloser
    13  	sync.Once
    14  }
    15  
    16  func (r *autoClosingReader) Read(b []byte) (n int, err error) {
    17  	n, err = r.ReadCloser.Read(b)
    18  	if err != nil {
    19  		r.Once.Do(func() { r.ReadCloser.Close() })
    20  	}
    21  	return
    22  }
    23  
    24  func createStdInCloser(pipe io.WriteCloser, process hcsshim.Process) io.WriteCloser {
    25  	return ioutils.NewWriteCloserWrapper(pipe, func() error {
    26  		if err := pipe.Close(); err != nil {
    27  			return err
    28  		}
    29  
    30  		err := process.CloseStdin()
    31  		if err != nil && !hcsshim.IsNotExist(err) && !hcsshim.IsAlreadyClosed(err) {
    32  			// This error will occur if the compute system is currently shutting down
    33  			if perr, ok := err.(*hcsshim.ProcessError); ok && perr.Err != hcsshim.ErrVmcomputeOperationInvalidState {
    34  				return err
    35  			}
    36  		}
    37  
    38  		return nil
    39  	})
    40  }
    41  
    42  func (p *process) Cleanup() error {
    43  	return nil
    44  }