Set stderr to empty string when using terminal on Windows.

    Windows HCSShim requires that stderr is an empty string when using terminal.
	Reference: https://github.com/microsoft/hcsshim/blob/200feabd854da69f615a598ed6a1263ce9531676/cmd/containerd-shim-runhcs-v1/service_internal.go#L127

Signed-off-by: Christine Murimi <[email protected]>
(cherry picked from commit eaa1afe)

Author: TinaMor

cio/io.go

@@ -268,26 +268,6 @@ func BinaryIO(binary string, args map[string]string) Creator {
 	}
 }
 
-// TerminalBinaryIO forwards container STDOUT|STDERR directly to a logging binary
-// It also sets the terminal option to true
-func TerminalBinaryIO(binary string, args map[string]string) Creator {
-	return func(_ string) (IO, error) {
-		uri, err := LogURIGenerator("binary", binary, args)
-		if err != nil {
-			return nil, err
-		}
-
-		res := uri.String()
-		return &logURI{
-			config: Config{
-				Stdout:   res,
-				Stderr:   res,
-				Terminal: true,
-			},
-		}, nil
-	}
-}
-
 // LogFile creates a file on disk that logs the task's STDOUT,STDERR.
 // If the log file already exists, the logs will be appended to the file.
 func LogFile(path string) Creator {

cio/io_unix.go

@@ -22,6 +22,7 @@ import (
 	"context"
 	"fmt"
 	"io"
+	"net/url"
 	"os"
 	"path/filepath"
 	"sync"
@@ -158,3 +159,37 @@ func NewDirectIO(ctx context.Context, fifos *FIFOSet) (*DirectIO, error) {
 		},
 	}, err
 }
+
+// TerminalLogURI provides the raw logging URI
+// as well as sets the terminal option to true.
+func TerminalLogURI(uri *url.URL) Creator {
+	return func(_ string) (IO, error) {
+		return &logURI{
+			config: Config{
+				Stdout:   uri.String(),
+				Stderr:   uri.String(),
+				Terminal: true,
+			},
+		}, nil
+	}
+}
+
+// TerminalBinaryIO forwards container STDOUT|STDERR directly to a logging binary
+// It also sets the terminal option to true
+func TerminalBinaryIO(binary string, args map[string]string) Creator {
+	return func(_ string) (IO, error) {
+		uri, err := LogURIGenerator("binary", binary, args)
+		if err != nil {
+			return nil, err
+		}
+
+		res := uri.String()
+		return &logURI{
+			config: Config{
+				Stdout:   res,
+				Stderr:   res,
+				Terminal: true,
+			},
+		}, nil
+	}
+}

cio/io_windows.go

@@ -20,6 +20,7 @@ import (
 	"context"
 	"fmt"
 	"io"
+	"net/url"
 
 	winio "github.com/Microsoft/go-winio"
 	"github.com/containerd/log"
@@ -155,3 +156,42 @@ func NewDirectIOFromFIFOSet(ctx context.Context, stdin io.WriteCloser, stdout, s
 		},
 	}
 }
+
+// TerminalLogURI provides the raw logging URI
+// as well as sets the terminal option to true.
+func TerminalLogURI(uri *url.URL) Creator {
+	return func(_ string) (IO, error) {
+		return &logURI{
+			config: Config{
+				Terminal: true,
+				Stdout:   uri.String(),
+
+				// Windows HCSShim requires that stderr is an empty string when using terminal.
+				// https://github.com/microsoft/hcsshim/blob/200feabd854da69f615a598ed6a1263ce9531676/cmd/containerd-shim-runhcs-v1/service_internal.go#L127
+				Stderr: "",
+			},
+		}, nil
+	}
+}
+
+// TerminalBinaryIO forwards container STDOUT|STDERR directly to a logging binary
+// It also sets the terminal option to true
+func TerminalBinaryIO(binary string, args map[string]string) Creator {
+	return func(_ string) (IO, error) {
+		uri, err := LogURIGenerator("binary", binary, args)
+		if err != nil {
+			return nil, err
+		}
+
+		return &logURI{
+			config: Config{
+				Terminal: true,
+				Stdout:   uri.String(),
+
+				// Windows HCSShim requires that stderr is an empty string when using terminal.
+				// https://github.com/microsoft/hcsshim/blob/200feabd854da69f615a598ed6a1263ce9531676/cmd/containerd-shim-runhcs-v1/service_internal.go#L127
+				Stderr: "",
+			},
+		}, nil
+	}
+}