Merge pull request #52753 from munnerz/sample-controller

Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

sample-controller: add example CRD controller

**What this PR does / why we need it**:

Adds a sample-controller example repository

fixes #52752

**Special notes for your reviewer**:

This is currently based on the sttts:sttts-codegen-scripts branch and should not be merged until that is (ref https://github.com/kubernetes/kubernetes/pull/52186)

**Release note**:

```
Add sample-controller repository
```

/cc @sttts @nikhita @colemickens

Kubernetes-commit: 9a7800f7d2efb88b397674672ac56f898826cf7c

vendor/github.com/howeyc/gopass/terminal_solaris.go

@@ -0,0 +1,69 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License, Version 1.0 only
+ * (the "License").  You may not use this file except in compliance
+ * with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+// Below is derived from Solaris source, so CDDL license is included.
+
+package gopass
+
+import (
+	"syscall"
+
+	"golang.org/x/sys/unix"
+)
+
+type terminalState struct {
+	state *unix.Termios
+}
+
+// isTerminal returns true if there is a terminal attached to the given
+// file descriptor.
+// Source: http://src.illumos.org/source/xref/illumos-gate/usr/src/lib/libbc/libc/gen/common/isatty.c
+func isTerminal(fd uintptr) bool {
+	var termio unix.Termio
+	err := unix.IoctlSetTermio(int(fd), unix.TCGETA, &termio)
+	return err == nil
+}
+
+// makeRaw puts the terminal connected to the given file descriptor into raw
+// mode and returns the previous state of the terminal so that it can be
+// restored.
+// Source: http://src.illumos.org/source/xref/illumos-gate/usr/src/lib/libast/common/uwin/getpass.c
+func makeRaw(fd uintptr) (*terminalState, error) {
+	oldTermiosPtr, err := unix.IoctlGetTermios(int(fd), unix.TCGETS)
+	if err != nil {
+		return nil, err
+	}
+	oldTermios := *oldTermiosPtr
+
+	newTermios := oldTermios
+	newTermios.Lflag &^= syscall.ECHO | syscall.ECHOE | syscall.ECHOK | syscall.ECHONL
+	if err := unix.IoctlSetTermios(int(fd), unix.TCSETS, &newTermios); err != nil {
+		return nil, err
+	}
+
+	return &terminalState{
+		state: oldTermiosPtr,
+	}, nil
+}
+
+func restore(fd uintptr, oldState *terminalState) error {
+	return unix.IoctlSetTermios(int(fd), unix.TCSETS, oldState.state)
+}