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
133
134
135
136
137
138
|
// Copyright 2018 Google LLC
//
// 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 image provides end-to-end integration tests for runsc. These tests require
// docker and runsc to be installed on the machine. To set it up, run:
//
// ./runsc/test/install.sh [--runtime <name>]
//
// The tests expect the runtime name to be provided in the RUNSC_RUNTIME
// environment variable (default: runsc-test).
//
// Each test calls docker commands to start up a container, and tests that it is
// behaving properly, with various runsc commands. The container is killed and deleted
// at the end.
package integration
import (
"fmt"
"strconv"
"syscall"
"testing"
"time"
"gvisor.googlesource.com/gvisor/pkg/abi/linux"
"gvisor.googlesource.com/gvisor/runsc/test/testutil"
)
func TestExecCapabilities(t *testing.T) {
if err := testutil.Pull("alpine"); err != nil {
t.Fatalf("docker pull failed: %v", err)
}
d := testutil.MakeDocker("exec-test")
// Start the container.
if err := d.Run("alpine", "sh", "-c", "cat /proc/self/status; sleep 100"); err != nil {
t.Fatalf("docker run failed: %v", err)
}
defer d.CleanUp()
matches, err := d.WaitForOutputSubmatch("CapEff:\t([0-9a-f]+)\n", 5*time.Second)
if err != nil {
t.Fatalf("WaitForOutputSubmatch() timeout: %v", err)
}
if len(matches) != 2 {
t.Fatalf("There should be a match for the whole line and the capability bitmask")
}
capString := matches[1]
t.Log("Root capabilities:", capString)
// CAP_NET_RAW was in the capability set for the container, but was
// removed. However, `exec` does not remove it. Verify that it's not
// set in the container, then re-add it for comparison.
caps, err := strconv.ParseUint(capString, 16, 64)
if err != nil {
t.Fatalf("failed to convert capabilities %q: %v", capString, err)
}
if caps&(1<<uint64(linux.CAP_NET_RAW)) != 0 {
t.Fatalf("CAP_NET_RAW should be filtered, but is set in the container: %x", caps)
}
caps |= 1 << uint64(linux.CAP_NET_RAW)
want := fmt.Sprintf("CapEff:\t%016x\n", caps)
// Now check that exec'd process capabilities match the root.
got, err := d.Exec("grep", "CapEff:", "/proc/self/status")
if err != nil {
t.Fatalf("docker exec failed: %v", err)
}
if got != want {
t.Errorf("wrong capabilities, got: %q, want: %q", got, want)
}
}
func TestExecJobControl(t *testing.T) {
if err := testutil.Pull("alpine"); err != nil {
t.Fatalf("docker pull failed: %v", err)
}
d := testutil.MakeDocker("exec-job-control-test")
// Start the container.
if err := d.Run("alpine", "sleep", "1000"); err != nil {
t.Fatalf("docker run failed: %v", err)
}
defer d.CleanUp()
// Exec 'sh' with an attached pty.
cmd, ptmx, err := d.ExecWithTerminal("sh")
if err != nil {
t.Fatalf("docker exec failed: %v", err)
}
defer ptmx.Close()
// Call "sleep 100 | cat" in the shell. We pipe to cat so that there
// will be two processes in the foreground process group.
if _, err := ptmx.Write([]byte("sleep 100 | cat\n")); err != nil {
t.Fatalf("error writing to pty: %v", err)
}
// Give shell a few seconds to start executing the sleep.
time.Sleep(2 * time.Second)
// Send a ^C to the pty, which should kill sleep and cat, but not the
// shell. \x03 is ASCII "end of text", which is the same as ^C.
if _, err := ptmx.Write([]byte{'\x03'}); err != nil {
t.Fatalf("error writing to pty: %v", err)
}
// The shell should still be alive at this point. Sleep should have
// exited with code 2+128=130. We'll exit with 10 plus that number, so
// that we can be sure that the shell did not get signalled.
if _, err := ptmx.Write([]byte("exit $(expr $? + 10)\n")); err != nil {
t.Fatalf("error writing to pty: %v", err)
}
// Exec process should exit with code 10+130=140.
ps, err := cmd.Process.Wait()
if err != nil {
t.Fatalf("error waiting for exec process: %v", err)
}
ws := ps.Sys().(syscall.WaitStatus)
if !ws.Exited() {
t.Errorf("ws.Exited got false, want true")
}
if got, want := ws.ExitStatus(), 140; got != want {
t.Errorf("ws.ExitedStatus got %d, want %d", got, want)
}
}
|
