Adding upstream version 1.21.8.upstream/1.21.8

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 34 insertions, 0 deletions

diff --git a/src/internal/testpty/pty_cgo.go b/src/internal/testpty/pty_cgo.go
new file mode 100644
index 0000000..442fbcf
--- /dev/null
+++ b/src/internal/testpty/pty_cgo.go
@@ -0,0 +1,34 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build cgo && (aix || dragonfly || freebsd || (linux && !android) || netbsd || openbsd)
+
+package testpty
+
+/*
+#define _XOPEN_SOURCE 600
+#include <fcntl.h>
+#include <stdlib.h>
+#include <unistd.h>
+*/
+import "C"
+
+import "os"
+
+func open() (pty *os.File, processTTY string, err error) {
+	m, err := C.posix_openpt(C.O_RDWR)
+	if m < 0 {
+		return nil, "", ptyError("posix_openpt", err)
+	}
+	if res, err := C.grantpt(m); res < 0 {
+		C.close(m)
+		return nil, "", ptyError("grantpt", err)
+	}
+	if res, err := C.unlockpt(m); res < 0 {
+		C.close(m)
+		return nil, "", ptyError("unlockpt", err)
+	}
+	processTTY = C.GoString(C.ptsname(m))
+	return os.NewFile(uintptr(m), "pty"), processTTY, nil
+}