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authorkevin.xu <cming.xu@gmail.com>2020-04-27 21:51:31 +0800
committerGitHub <noreply@github.com>2020-04-27 21:51:31 +0800
commite896ca54db67524afc20b644d43c72185e72dc0e (patch)
tree2a16f3a62a5cafd098f1f028c621f1b655589d69 /runsc/container/test_app/fds.go
parent1f19624fa127d7d59cabe29593cc80b7fe6c81f8 (diff)
parent3c67754663f424f2ebbc0ff2a4c80e30618d5355 (diff)
Merge pull request #1 from google/master
catch up
Diffstat (limited to 'runsc/container/test_app/fds.go')
-rw-r--r--runsc/container/test_app/fds.go185
1 files changed, 0 insertions, 185 deletions
diff --git a/runsc/container/test_app/fds.go b/runsc/container/test_app/fds.go
deleted file mode 100644
index a90cc1662..000000000
--- a/runsc/container/test_app/fds.go
+++ /dev/null
@@ -1,185 +0,0 @@
-// 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.
-
-package main
-
-import (
- "context"
- "io/ioutil"
- "log"
- "os"
- "time"
-
- "flag"
- "github.com/google/subcommands"
- "gvisor.dev/gvisor/pkg/unet"
- "gvisor.dev/gvisor/runsc/testutil"
-)
-
-const fileContents = "foobarbaz"
-
-// fdSender will open a file and send the FD over a unix domain socket.
-type fdSender struct {
- socketPath string
-}
-
-// Name implements subcommands.Command.Name.
-func (*fdSender) Name() string {
- return "fd_sender"
-}
-
-// Synopsis implements subcommands.Command.Synopsys.
-func (*fdSender) Synopsis() string {
- return "creates a file and sends the FD over the socket"
-}
-
-// Usage implements subcommands.Command.Usage.
-func (*fdSender) Usage() string {
- return "fd_sender <flags>"
-}
-
-// SetFlags implements subcommands.Command.SetFlags.
-func (fds *fdSender) SetFlags(f *flag.FlagSet) {
- f.StringVar(&fds.socketPath, "socket", "", "path to socket")
-}
-
-// Execute implements subcommands.Command.Execute.
-func (fds *fdSender) Execute(ctx context.Context, f *flag.FlagSet, args ...interface{}) subcommands.ExitStatus {
- if fds.socketPath == "" {
- log.Fatalf("socket flag must be set")
- }
-
- dir, err := ioutil.TempDir("", "")
- if err != nil {
- log.Fatalf("TempDir failed: %v", err)
- }
-
- fileToSend, err := ioutil.TempFile(dir, "")
- if err != nil {
- log.Fatalf("TempFile failed: %v", err)
- }
- defer fileToSend.Close()
-
- if _, err := fileToSend.WriteString(fileContents); err != nil {
- log.Fatalf("Write(%q) failed: %v", fileContents, err)
- }
-
- // Receiver may not be started yet, so try connecting in a poll loop.
- var s *unet.Socket
- if err := testutil.Poll(func() error {
- var err error
- s, err = unet.Connect(fds.socketPath, true /* SEQPACKET, so we can send empty message with FD */)
- return err
- }, 10*time.Second); err != nil {
- log.Fatalf("Error connecting to socket %q: %v", fds.socketPath, err)
- }
- defer s.Close()
-
- w := s.Writer(true)
- w.ControlMessage.PackFDs(int(fileToSend.Fd()))
- if _, err := w.WriteVec([][]byte{[]byte{'a'}}); err != nil {
- log.Fatalf("Error sending FD %q over socket %q: %v", fileToSend.Fd(), fds.socketPath, err)
- }
-
- log.Print("FD SENDER exiting successfully")
- return subcommands.ExitSuccess
-}
-
-// fdReceiver receives an FD from a unix domain socket and does things to it.
-type fdReceiver struct {
- socketPath string
-}
-
-// Name implements subcommands.Command.Name.
-func (*fdReceiver) Name() string {
- return "fd_receiver"
-}
-
-// Synopsis implements subcommands.Command.Synopsys.
-func (*fdReceiver) Synopsis() string {
- return "reads an FD from a unix socket, and then does things to it"
-}
-
-// Usage implements subcommands.Command.Usage.
-func (*fdReceiver) Usage() string {
- return "fd_receiver <flags>"
-}
-
-// SetFlags implements subcommands.Command.SetFlags.
-func (fdr *fdReceiver) SetFlags(f *flag.FlagSet) {
- f.StringVar(&fdr.socketPath, "socket", "", "path to socket")
-}
-
-// Execute implements subcommands.Command.Execute.
-func (fdr *fdReceiver) Execute(ctx context.Context, f *flag.FlagSet, args ...interface{}) subcommands.ExitStatus {
- if fdr.socketPath == "" {
- log.Fatalf("Flags cannot be empty, given: socket: %q", fdr.socketPath)
- }
-
- ss, err := unet.BindAndListen(fdr.socketPath, true /* packet */)
- if err != nil {
- log.Fatalf("BindAndListen(%q) failed: %v", fdr.socketPath, err)
- }
- defer ss.Close()
-
- var s *unet.Socket
- c := make(chan error, 1)
- go func() {
- var err error
- s, err = ss.Accept()
- c <- err
- }()
-
- select {
- case err := <-c:
- if err != nil {
- log.Fatalf("Accept() failed: %v", err)
- }
- case <-time.After(10 * time.Second):
- log.Fatalf("Timeout waiting for accept")
- }
-
- r := s.Reader(true)
- r.EnableFDs(1)
- b := [][]byte{{'a'}}
- if n, err := r.ReadVec(b); n != 1 || err != nil {
- log.Fatalf("ReadVec got n=%d err %v (wanted 0, nil)", n, err)
- }
-
- fds, err := r.ExtractFDs()
- if err != nil {
- log.Fatalf("ExtractFD() got err %v", err)
- }
- if len(fds) != 1 {
- log.Fatalf("ExtractFD() got %d FDs, wanted 1", len(fds))
- }
- fd := fds[0]
-
- file := os.NewFile(uintptr(fd), "received file")
- defer file.Close()
- if _, err := file.Seek(0, os.SEEK_SET); err != nil {
- log.Fatalf("Seek(0, 0) failed: %v", err)
- }
-
- got, err := ioutil.ReadAll(file)
- if err != nil {
- log.Fatalf("ReadAll failed: %v", err)
- }
- if string(got) != fileContents {
- log.Fatalf("ReadAll got %q want %q", string(got), fileContents)
- }
-
- log.Print("FD RECEIVER exiting successfully")
- return subcommands.ExitSuccess
-}