vendor: add buildkit

Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>

vendor/github.com/containerd/console/tc_unix.go

@@ -0,0 +1,91 @@
+// +build darwin freebsd linux openbsd solaris
+
+/*
+   Copyright The containerd 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.
+*/
+
+package console
+
+import (
+	"golang.org/x/sys/unix"
+)
+
+func tcget(fd uintptr, p *unix.Termios) error {
+	termios, err := unix.IoctlGetTermios(int(fd), cmdTcGet)
+	if err != nil {
+		return err
+	}
+	*p = *termios
+	return nil
+}
+
+func tcset(fd uintptr, p *unix.Termios) error {
+	return unix.IoctlSetTermios(int(fd), cmdTcSet, p)
+}
+
+func tcgwinsz(fd uintptr) (WinSize, error) {
+	var ws WinSize
+
+	uws, err := unix.IoctlGetWinsize(int(fd), unix.TIOCGWINSZ)
+	if err != nil {
+		return ws, err
+	}
+
+	// Translate from unix.Winsize to console.WinSize
+	ws.Height = uws.Row
+	ws.Width = uws.Col
+	ws.x = uws.Xpixel
+	ws.y = uws.Ypixel
+	return ws, nil
+}
+
+func tcswinsz(fd uintptr, ws WinSize) error {
+	// Translate from console.WinSize to unix.Winsize
+
+	var uws unix.Winsize
+	uws.Row = ws.Height
+	uws.Col = ws.Width
+	uws.Xpixel = ws.x
+	uws.Ypixel = ws.y
+
+	return unix.IoctlSetWinsize(int(fd), unix.TIOCSWINSZ, &uws)
+}
+
+func setONLCR(fd uintptr, enable bool) error {
+	var termios unix.Termios
+	if err := tcget(fd, &termios); err != nil {
+		return err
+	}
+	if enable {
+		// Set +onlcr so we can act like a real terminal
+		termios.Oflag |= unix.ONLCR
+	} else {
+		// Set -onlcr so we don't have to deal with \r.
+		termios.Oflag &^= unix.ONLCR
+	}
+	return tcset(fd, &termios)
+}
+
+func cfmakeraw(t unix.Termios) unix.Termios {
+	t.Iflag &^= (unix.IGNBRK | unix.BRKINT | unix.PARMRK | unix.ISTRIP | unix.INLCR | unix.IGNCR | unix.ICRNL | unix.IXON)
+	t.Oflag &^= unix.OPOST
+	t.Lflag &^= (unix.ECHO | unix.ECHONL | unix.ICANON | unix.ISIG | unix.IEXTEN)
+	t.Cflag &^= (unix.CSIZE | unix.PARENB)
+	t.Cflag &^= unix.CS8
+	t.Cc[unix.VMIN] = 1
+	t.Cc[unix.VTIME] = 0
+
+	return t
+}