1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
|
// 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 fdchannel
import (
"io/ioutil"
"os"
"syscall"
"testing"
"time"
"gvisor.dev/gvisor/pkg/sync"
)
func TestSendRecvFD(t *testing.T) {
sendFile, err := ioutil.TempFile("", "fdchannel_test_")
if err != nil {
t.Fatalf("failed to create temporary file: %v", err)
}
defer sendFile.Close()
chanFDs, err := NewConnectedSockets()
if err != nil {
t.Fatalf("failed to create fdchannel sockets: %v", err)
}
sendEP := NewEndpoint(chanFDs[0])
defer sendEP.Destroy()
recvEP := NewEndpoint(chanFDs[1])
defer recvEP.Destroy()
recvFD, err := recvEP.RecvFDNonblock()
if err != syscall.EAGAIN && err != syscall.EWOULDBLOCK {
t.Errorf("RecvFDNonblock before SendFD: got (%d, %v), wanted (<unspecified>, EAGAIN or EWOULDBLOCK", recvFD, err)
}
if err := sendEP.SendFD(int(sendFile.Fd())); err != nil {
t.Fatalf("SendFD failed: %v", err)
}
recvFD, err = recvEP.RecvFD()
if err != nil {
t.Fatalf("RecvFD failed: %v", err)
}
recvFile := os.NewFile(uintptr(recvFD), "received file")
defer recvFile.Close()
sendInfo, err := sendFile.Stat()
if err != nil {
t.Fatalf("failed to stat sent file: %v", err)
}
sendInfoSys := sendInfo.Sys()
sendStat, ok := sendInfoSys.(*syscall.Stat_t)
if !ok {
t.Fatalf("sent file's FileInfo is backed by unknown type %T", sendInfoSys)
}
recvInfo, err := recvFile.Stat()
if err != nil {
t.Fatalf("failed to stat received file: %v", err)
}
recvInfoSys := recvInfo.Sys()
recvStat, ok := recvInfoSys.(*syscall.Stat_t)
if !ok {
t.Fatalf("received file's FileInfo is backed by unknown type %T", recvInfoSys)
}
if sendStat.Dev != recvStat.Dev || sendStat.Ino != recvStat.Ino {
t.Errorf("sent file (dev=%d, ino=%d) does not match received file (dev=%d, ino=%d)", sendStat.Dev, sendStat.Ino, recvStat.Dev, recvStat.Ino)
}
}
func TestShutdownThenRecvFD(t *testing.T) {
sendFile, err := ioutil.TempFile("", "fdchannel_test_")
if err != nil {
t.Fatalf("failed to create temporary file: %v", err)
}
defer sendFile.Close()
chanFDs, err := NewConnectedSockets()
if err != nil {
t.Fatalf("failed to create fdchannel sockets: %v", err)
}
sendEP := NewEndpoint(chanFDs[0])
defer sendEP.Destroy()
recvEP := NewEndpoint(chanFDs[1])
defer recvEP.Destroy()
recvEP.Shutdown()
if _, err := recvEP.RecvFD(); err == nil {
t.Error("RecvFD succeeded unexpectedly")
}
}
func TestRecvFDThenShutdown(t *testing.T) {
sendFile, err := ioutil.TempFile("", "fdchannel_test_")
if err != nil {
t.Fatalf("failed to create temporary file: %v", err)
}
defer sendFile.Close()
chanFDs, err := NewConnectedSockets()
if err != nil {
t.Fatalf("failed to create fdchannel sockets: %v", err)
}
sendEP := NewEndpoint(chanFDs[0])
defer sendEP.Destroy()
recvEP := NewEndpoint(chanFDs[1])
defer recvEP.Destroy()
var receiverWG sync.WaitGroup
receiverWG.Add(1)
go func() {
defer receiverWG.Done()
if _, err := recvEP.RecvFD(); err == nil {
t.Error("RecvFD succeeded unexpectedly")
}
}()
defer receiverWG.Wait()
time.Sleep(time.Second) // to ensure recvEP.RecvFD() has blocked
recvEP.Shutdown()
}
|
