1 files changed, 0 insertions, 487 deletions
diff --git a/runsc/container/console_test.go b/runsc/container/console_test.go
deleted file mode 100644
index 651615d4c..000000000
--- a/runsc/container/console_test.go
+++ /dev/null
@@ -1,487 +0,0 @@
-// Copyright 2018 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.
-
-package container
-
-import (
-	"bytes"
-	"fmt"
-	"io"
-	"os"
-	"path/filepath"
-	"syscall"
-	"testing"
-	"time"
-
-	"github.com/kr/pty"
-	"golang.org/x/sys/unix"
-	"gvisor.dev/gvisor/pkg/sentry/control"
-	"gvisor.dev/gvisor/pkg/sentry/kernel"
-	"gvisor.dev/gvisor/pkg/sync"
-	"gvisor.dev/gvisor/pkg/unet"
-	"gvisor.dev/gvisor/pkg/urpc"
-	"gvisor.dev/gvisor/runsc/testutil"
-)
-
-// socketPath creates a path inside bundleDir and ensures that the returned
-// path is under 108 charactors (the unix socket path length limit),
-// relativizing the path if necessary.
-func socketPath(bundleDir string) (string, error) {
-	path := filepath.Join(bundleDir, "socket")
-	cwd, err := os.Getwd()
-	if err != nil {
-		return "", fmt.Errorf("error getting cwd: %v", err)
-	}
-	relPath, err := filepath.Rel(cwd, path)
-	if err != nil {
-		return "", fmt.Errorf("error getting relative path for %q from cwd %q: %v", path, cwd, err)
-	}
-	if len(path) > len(relPath) {
-		path = relPath
-	}
-	const maxPathLen = 108
-	if len(path) > maxPathLen {
-		return "", fmt.Errorf("could not get socket path under length limit %d: %s", maxPathLen, path)
-	}
-	return path, nil
-}
-
-// createConsoleSocket creates a socket at the given path that will receive a
-// console fd from the sandbox. If no error occurs, it returns the server
-// socket and a cleanup function.
-func createConsoleSocket(path string) (*unet.ServerSocket, func() error, error) {
-	srv, err := unet.BindAndListen(path, false)
-	if err != nil {
-		return nil, nil, fmt.Errorf("error binding and listening to socket %q: %v", path, err)
-	}
-
-	cleanup := func() error {
-		if err := srv.Close(); err != nil {
-			return fmt.Errorf("error closing socket %q: %v", path, err)
-		}
-		if err := os.Remove(path); err != nil {
-			return fmt.Errorf("error removing socket %q: %v", path, err)
-		}
-		return nil
-	}
-
-	return srv, cleanup, nil
-}
-
-// receiveConsolePTY accepts a connection on the server socket and reads fds.
-// It fails if more than one FD is received, or if the FD is not a PTY. It
-// returns the PTY master file.
-func receiveConsolePTY(srv *unet.ServerSocket) (*os.File, error) {
-	sock, err := srv.Accept()
-	if err != nil {
-		return nil, fmt.Errorf("error accepting socket connection: %v", err)
-	}
-
-	// Allow 3 fds to be received.  We only expect 1.
-	r := sock.Reader(true /* blocking */)
-	r.EnableFDs(1)
-
-	// The socket is closed right after sending the FD, so EOF is
-	// an allowed error.
-	b := [][]byte{{}}
-	if _, err := r.ReadVec(b); err != nil && err != io.EOF {
-		return nil, fmt.Errorf("error reading from socket connection: %v", err)
-	}
-
-	// We should have gotten a control message.
-	fds, err := r.ExtractFDs()
-	if err != nil {
-		return nil, fmt.Errorf("error extracting fds from socket connection: %v", err)
-	}
-	if len(fds) != 1 {
-		return nil, fmt.Errorf("got %d fds from socket, wanted 1", len(fds))
-	}
-
-	// Verify that the fd is a terminal.
-	if _, err := unix.IoctlGetTermios(fds[0], unix.TCGETS); err != nil {
-		return nil, fmt.Errorf("fd is not a terminal (ioctl TGGETS got %v)", err)
-	}
-
-	return os.NewFile(uintptr(fds[0]), "pty_master"), nil
-}
-
-// Test that an pty FD is sent over the console socket if one is provided.
-func TestConsoleSocket(t *testing.T) {
-	for _, conf := range configs(all...) {
-		t.Logf("Running test with conf: %+v", conf)
-		spec := testutil.NewSpecWithArgs("true")
-		rootDir, bundleDir, err := testutil.SetupContainer(spec, conf)
-		if err != nil {
-			t.Fatalf("error setting up container: %v", err)
-		}
-		defer os.RemoveAll(rootDir)
-		defer os.RemoveAll(bundleDir)
-
-		sock, err := socketPath(bundleDir)
-		if err != nil {
-			t.Fatalf("error getting socket path: %v", err)
-		}
-		srv, cleanup, err := createConsoleSocket(sock)
-		if err != nil {
-			t.Fatalf("error creating socket at %q: %v", sock, err)
-		}
-		defer cleanup()
-
-		// Create the container and pass the socket name.
-		args := Args{
-			ID:            testutil.UniqueContainerID(),
-			Spec:          spec,
-			BundleDir:     bundleDir,
-			ConsoleSocket: sock,
-		}
-		c, err := New(conf, args)
-		if err != nil {
-			t.Fatalf("error creating container: %v", err)
-		}
-		defer c.Destroy()
-
-		// Make sure we get a console PTY.
-		ptyMaster, err := receiveConsolePTY(srv)
-		if err != nil {
-			t.Fatalf("error receiving console FD: %v", err)
-		}
-		ptyMaster.Close()
-	}
-}
-
-// Test that job control signals work on a console created with "exec -ti".
-func TestJobControlSignalExec(t *testing.T) {
-	spec := testutil.NewSpecWithArgs("/bin/sleep", "10000")
-	conf := testutil.TestConfig()
-
-	rootDir, bundleDir, err := testutil.SetupContainer(spec, conf)
-	if err != nil {
-		t.Fatalf("error setting up container: %v", err)
-	}
-	defer os.RemoveAll(rootDir)
-	defer os.RemoveAll(bundleDir)
-
-	// Create and start the container.
-	args := Args{
-		ID:        testutil.UniqueContainerID(),
-		Spec:      spec,
-		BundleDir: bundleDir,
-	}
-	c, err := New(conf, args)
-	if err != nil {
-		t.Fatalf("error creating container: %v", err)
-	}
-	defer c.Destroy()
-	if err := c.Start(conf); err != nil {
-		t.Fatalf("error starting container: %v", err)
-	}
-
-	// Create a pty master/slave. The slave will be passed to the exec
-	// process.
-	ptyMaster, ptySlave, err := pty.Open()
-	if err != nil {
-		t.Fatalf("error opening pty: %v", err)
-	}
-	defer ptyMaster.Close()
-	defer ptySlave.Close()
-
-	// Exec bash and attach a terminal. Note that occasionally /bin/sh
-	// may be a different shell or have a different configuration (such
-	// as disabling interactive mode and job control). Since we want to
-	// explicitly test interactive mode, use /bin/bash. See b/116981926.
-	execArgs := &control.ExecArgs{
-		Filename: "/bin/bash",
-		// Don't let bash execute from profile or rc files, otherwise
-		// our PID counts get messed up.
-		Argv: []string{"/bin/bash", "--noprofile", "--norc"},
-		// Pass the pty slave as FD 0, 1, and 2.
-		FilePayload: urpc.FilePayload{
-			Files: []*os.File{ptySlave, ptySlave, ptySlave},
-		},
-		StdioIsPty: true,
-	}
-
-	pid, err := c.Execute(execArgs)
-	if err != nil {
-		t.Fatalf("error executing: %v", err)
-	}
-	if pid != 2 {
-		t.Fatalf("exec got pid %d, wanted %d", pid, 2)
-	}
-
-	// Make sure all the processes are running.
-	expectedPL := []*control.Process{
-		// Root container process.
-		{PID: 1, Cmd: "sleep", Threads: []kernel.ThreadID{1}},
-		// Bash from exec process.
-		{PID: 2, Cmd: "bash", Threads: []kernel.ThreadID{2}},
-	}
-	if err := waitForProcessList(c, expectedPL); err != nil {
-		t.Error(err)
-	}
-
-	// Execute sleep.
-	ptyMaster.Write([]byte("sleep 100\n"))
-
-	// Wait for it to start. Sleep's PPID is bash's PID.
-	expectedPL = append(expectedPL, &control.Process{PID: 3, PPID: 2, Cmd: "sleep", Threads: []kernel.ThreadID{3}})
-	if err := waitForProcessList(c, expectedPL); err != nil {
-		t.Error(err)
-	}
-
-	// Send a SIGTERM to the foreground process for the exec PID. Note that
-	// although we pass in the PID of "bash", it should actually terminate
-	// "sleep", since that is the foreground process.
-	if err := c.Sandbox.SignalProcess(c.ID, pid, syscall.SIGTERM, true /* fgProcess */); err != nil {
-		t.Fatalf("error signaling container: %v", err)
-	}
-
-	// Sleep process should be gone.
-	expectedPL = expectedPL[:len(expectedPL)-1]
-	if err := waitForProcessList(c, expectedPL); err != nil {
-		t.Error(err)
-	}
-
-	// Sleep is dead, but it may take more time for bash to notice and
-	// change the foreground process back to itself. We know it is done
-	// when bash writes "Terminated" to the pty.
-	if err := testutil.WaitUntilRead(ptyMaster, "Terminated", nil, 5*time.Second); err != nil {
-		t.Fatalf("bash did not take over pty: %v", err)
-	}
-
-	// Send a SIGKILL to the foreground process again. This time "bash"
-	// should be killed. We use SIGKILL instead of SIGTERM or SIGINT
-	// because bash ignores those.
-	if err := c.Sandbox.SignalProcess(c.ID, pid, syscall.SIGKILL, true /* fgProcess */); err != nil {
-		t.Fatalf("error signaling container: %v", err)
-	}
-	expectedPL = expectedPL[:1]
-	if err := waitForProcessList(c, expectedPL); err != nil {
-		t.Error(err)
-	}
-
-	// Make sure the process indicates it was killed by a SIGKILL.
-	ws, err := c.WaitPID(pid)
-	if err != nil {
-		t.Errorf("waiting on container failed: %v", err)
-	}
-	if !ws.Signaled() {
-		t.Error("ws.Signaled() got false, want true")
-	}
-	if got, want := ws.Signal(), syscall.SIGKILL; got != want {
-		t.Errorf("ws.Signal() got %v, want %v", got, want)
-	}
-}
-
-// Test that job control signals work on a console created with "run -ti".
-func TestJobControlSignalRootContainer(t *testing.T) {
-	conf := testutil.TestConfig()
-	// Don't let bash execute from profile or rc files, otherwise our PID
-	// counts get messed up.
-	spec := testutil.NewSpecWithArgs("/bin/bash", "--noprofile", "--norc")
-	spec.Process.Terminal = true
-
-	rootDir, bundleDir, err := testutil.SetupContainer(spec, conf)
-	if err != nil {
-		t.Fatalf("error setting up container: %v", err)
-	}
-	defer os.RemoveAll(rootDir)
-	defer os.RemoveAll(bundleDir)
-
-	sock, err := socketPath(bundleDir)
-	if err != nil {
-		t.Fatalf("error getting socket path: %v", err)
-	}
-	srv, cleanup, err := createConsoleSocket(sock)
-	if err != nil {
-		t.Fatalf("error creating socket at %q: %v", sock, err)
-	}
-	defer cleanup()
-
-	// Create the container and pass the socket name.
-	args := Args{
-		ID:            testutil.UniqueContainerID(),
-		Spec:          spec,
-		BundleDir:     bundleDir,
-		ConsoleSocket: sock,
-	}
-	c, err := New(conf, args)
-	if err != nil {
-		t.Fatalf("error creating container: %v", err)
-	}
-	defer c.Destroy()
-
-	// Get the PTY master.
-	ptyMaster, err := receiveConsolePTY(srv)
-	if err != nil {
-		t.Fatalf("error receiving console FD: %v", err)
-	}
-	defer ptyMaster.Close()
-
-	// Bash output as well as sandbox output will be written to the PTY
-	// file. Writes after a certain point will block unless we drain the
-	// PTY, so we must continually copy from it.
-	//
-	// We log the output to stderr for debugabilitly, and also to a buffer,
-	// since we wait on particular output from bash below. We use a custom
-	// blockingBuffer which is thread-safe and also blocks on Read calls,
-	// which makes this a suitable Reader for WaitUntilRead.
-	ptyBuf := newBlockingBuffer()
-	tee := io.TeeReader(ptyMaster, ptyBuf)
-	go io.Copy(os.Stderr, tee)
-
-	// Start the container.
-	if err := c.Start(conf); err != nil {
-		t.Fatalf("error starting container: %v", err)
-	}
-
-	// Start waiting for the container to exit in a goroutine. We do this
-	// very early, otherwise it might exit before we have a chance to call
-	// Wait.
-	var (
-		ws syscall.WaitStatus
-		wg sync.WaitGroup
-	)
-	wg.Add(1)
-	go func() {
-		var err error
-		ws, err = c.Wait()
-		if err != nil {
-			t.Errorf("error waiting on container: %v", err)
-		}
-		wg.Done()
-	}()
-
-	// Wait for bash to start.
-	expectedPL := []*control.Process{
-		{PID: 1, Cmd: "bash", Threads: []kernel.ThreadID{1}},
-	}
-	if err := waitForProcessList(c, expectedPL); err != nil {
-		t.Fatal(err)
-	}
-
-	// Execute sleep via the terminal.
-	ptyMaster.Write([]byte("sleep 100\n"))
-
-	// Wait for sleep to start.
-	expectedPL = append(expectedPL, &control.Process{PID: 2, PPID: 1, Cmd: "sleep", Threads: []kernel.ThreadID{2}})
-	if err := waitForProcessList(c, expectedPL); err != nil {
-		t.Fatal(err)
-	}
-
-	// Reset the pty buffer, so there is less output for us to scan later.
-	ptyBuf.Reset()
-
-	// Send a SIGTERM to the foreground process. We pass PID=0, indicating
-	// that the root process should be killed. However, by setting
-	// fgProcess=true, the signal should actually be sent to sleep.
-	if err := c.Sandbox.SignalProcess(c.ID, 0 /* PID */, syscall.SIGTERM, true /* fgProcess */); err != nil {
-		t.Fatalf("error signaling container: %v", err)
-	}
-
-	// Sleep process should be gone.
-	expectedPL = expectedPL[:len(expectedPL)-1]
-	if err := waitForProcessList(c, expectedPL); err != nil {
-		t.Error(err)
-	}
-
-	// Sleep is dead, but it may take more time for bash to notice and
-	// change the foreground process back to itself. We know it is done
-	// when bash writes "Terminated" to the pty.
-	if err := testutil.WaitUntilRead(ptyBuf, "Terminated", nil, 5*time.Second); err != nil {
-		t.Fatalf("bash did not take over pty: %v", err)
-	}
-
-	// Send a SIGKILL to the foreground process again. This time "bash"
-	// should be killed. We use SIGKILL instead of SIGTERM or SIGINT
-	// because bash ignores those.
-	if err := c.Sandbox.SignalProcess(c.ID, 0 /* PID */, syscall.SIGKILL, true /* fgProcess */); err != nil {
-		t.Fatalf("error signaling container: %v", err)
-	}
-
-	// Wait for the sandbox to exit. It should exit with a SIGKILL status.
-	wg.Wait()
-	if !ws.Signaled() {
-		t.Error("ws.Signaled() got false, want true")
-	}
-	if got, want := ws.Signal(), syscall.SIGKILL; got != want {
-		t.Errorf("ws.Signal() got %v, want %v", got, want)
-	}
-}
-
-// blockingBuffer is a thread-safe buffer that blocks when reading if the
-// buffer is empty.  It implements io.ReadWriter.
-type blockingBuffer struct {
-	// A send to readCh indicates that a previously empty buffer now has
-	// data for reading.
-	readCh chan struct{}
-
-	// mu protects buf.
-	mu  sync.Mutex
-	buf bytes.Buffer
-}
-
-func newBlockingBuffer() *blockingBuffer {
-	return &blockingBuffer{
-		readCh: make(chan struct{}, 1),
-	}
-}
-
-// Write implements Writer.Write.
-func (bb *blockingBuffer) Write(p []byte) (int, error) {
-	bb.mu.Lock()
-	defer bb.mu.Unlock()
-	l := bb.buf.Len()
-	n, err := bb.buf.Write(p)
-	if l == 0 && n > 0 {
-		// New data!
-		bb.readCh <- struct{}{}
-	}
-	return n, err
-}
-
-// Read implements Reader.Read. It will block until data is available.
-func (bb *blockingBuffer) Read(p []byte) (int, error) {
-	for {
-		bb.mu.Lock()
-		n, err := bb.buf.Read(p)
-		if n > 0 || err != io.EOF {
-			if bb.buf.Len() == 0 {
-				// Reset the readCh.
-				select {
-				case <-bb.readCh:
-				default:
-				}
-			}
-			bb.mu.Unlock()
-			return n, err
-		}
-		bb.mu.Unlock()
-
-		// Wait for new data.
-		<-bb.readCh
-	}
-}
-
-// Reset resets the buffer.
-func (bb *blockingBuffer) Reset() {
-	bb.mu.Lock()
-	defer bb.mu.Unlock()
-	bb.buf.Reset()
-	// Reset the readCh.
-	select {
-	case <-bb.readCh:
-	default:
-	}
-}