2 files changed, 48 insertions, 0 deletions
diff --git a/runsc/console/ctty_1_12.go b/runsc/console/ctty_1_12.go
new file mode 100644
index 000000000..6e7a314a3
--- /dev/null
+++ b/runsc/console/ctty_1_12.go
@@ -0,0 +1,24 @@
+// Copyright 2019 The gVisor Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// +build go1.12
+// +build !go1.13
+
+// TODO(b/133868570): Delete once Go 1.12 is no longer supported.
+
+package console
+
+// CttyFdIsPostShuffle indicates that in go1.12 and earlier, the
+// SysProcAttr.Ctty FD is determined "pre-shuffle" (not "post-shuffle").
+var CttyFdIsPostShuffle = false
diff --git a/runsc/console/ctty_1_13.go b/runsc/console/ctty_1_13.go
new file mode 100644
index 000000000..785d720e1
--- /dev/null
+++ b/runsc/console/ctty_1_13.go
@@ -0,0 +1,24 @@
+// Copyright 2019 The gVisor Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// +build go1.13
+// +build !go1.14
+
+// TODO(b/133868570): Delete once Go 1.12 is no longer supported.
+
+package console
+
+// CttyFdIsPostShuffle indicates that in go1.13 and later, the SysProcAttr.Ctty
+// FD is determined "post-shuffle".
+var CttyFdIsPostShuffle = true