54 lines
1.3 KiB
Go
54 lines
1.3 KiB
Go
package libcontainerd
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import (
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"io"
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"sync"
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"github.com/Microsoft/hcsshim"
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"github.com/docker/docker/pkg/ioutils"
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)
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// process keeps the state for both main container process and exec process.
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type process struct {
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processCommon
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// Platform specific fields are below here.
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// commandLine is to support returning summary information for docker top
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commandLine string
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hcsProcess hcsshim.Process
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}
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type autoClosingReader struct {
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io.ReadCloser
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sync.Once
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}
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func (r *autoClosingReader) Read(b []byte) (n int, err error) {
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n, err = r.ReadCloser.Read(b)
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if err == io.EOF {
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r.Once.Do(func() { r.ReadCloser.Close() })
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}
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return
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}
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func createStdInCloser(pipe io.WriteCloser, process hcsshim.Process) io.WriteCloser {
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return ioutils.NewWriteCloserWrapper(pipe, func() error {
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if err := pipe.Close(); err != nil {
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return err
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}
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// We do not need to lock container ID here, even though
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// we are calling into hcsshim. This is safe, because the
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// only place that closes this process handle is this method.
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err := process.CloseStdin()
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if err != nil && !hcsshim.IsNotExist(err) {
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// This error will occur if the compute system is currently shutting down
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if perr, ok := err.(*hcsshim.ProcessError); ok && perr.Err != hcsshim.ErrVmcomputeOperationInvalidState {
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return err
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}
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}
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return err
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})
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}
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