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
|
package sysinfo // import "github.com/docker/docker/pkg/sysinfo"
import (
"os"
"path"
"path/filepath"
"testing"
"golang.org/x/sys/unix"
"gotest.tools/v3/assert"
)
func TestReadProcBool(t *testing.T) {
tmpDir, err := os.MkdirTemp("", "test-sysinfo-proc")
assert.NilError(t, err)
defer os.RemoveAll(tmpDir)
procFile := filepath.Join(tmpDir, "read-proc-bool")
err = os.WriteFile(procFile, []byte("1"), 0644)
assert.NilError(t, err)
if !readProcBool(procFile) {
t.Fatal("expected proc bool to be true, got false")
}
if err := os.WriteFile(procFile, []byte("0"), 0644); err != nil {
t.Fatal(err)
}
if readProcBool(procFile) {
t.Fatal("expected proc bool to be false, got true")
}
if readProcBool(path.Join(tmpDir, "no-exist")) {
t.Fatal("should be false for non-existent entry")
}
}
func TestCgroupEnabled(t *testing.T) {
cgroupDir, err := os.MkdirTemp("", "cgroup-test")
assert.NilError(t, err)
defer os.RemoveAll(cgroupDir)
if cgroupEnabled(cgroupDir, "test") {
t.Fatal("cgroupEnabled should be false")
}
err = os.WriteFile(path.Join(cgroupDir, "test"), []byte{}, 0644)
assert.NilError(t, err)
if !cgroupEnabled(cgroupDir, "test") {
t.Fatal("cgroupEnabled should be true")
}
}
func TestNew(t *testing.T) {
sysInfo := New()
assert.Assert(t, sysInfo != nil)
checkSysInfo(t, sysInfo)
}
func checkSysInfo(t *testing.T, sysInfo *SysInfo) {
// Check if Seccomp is supported, via CONFIG_SECCOMP.then sysInfo.Seccomp must be TRUE , else FALSE
if err := unix.Prctl(unix.PR_GET_SECCOMP, 0, 0, 0, 0); err != unix.EINVAL {
// Make sure the kernel has CONFIG_SECCOMP_FILTER.
if err := unix.Prctl(unix.PR_SET_SECCOMP, unix.SECCOMP_MODE_FILTER, 0, 0, 0); err != unix.EINVAL {
assert.Assert(t, sysInfo.Seccomp)
}
} else {
assert.Assert(t, !sysInfo.Seccomp)
}
}
func TestNewAppArmorEnabled(t *testing.T) {
// Check if AppArmor is supported. then it must be TRUE , else FALSE
if _, err := os.Stat("/sys/kernel/security/apparmor"); err != nil {
t.Skip("AppArmor Must be Enabled")
}
sysInfo := New()
assert.Assert(t, sysInfo.AppArmor)
}
func TestNewAppArmorDisabled(t *testing.T) {
// Check if AppArmor is supported. then it must be TRUE , else FALSE
if _, err := os.Stat("/sys/kernel/security/apparmor"); !os.IsNotExist(err) {
t.Skip("AppArmor Must be Disabled")
}
sysInfo := New()
assert.Assert(t, !sysInfo.AppArmor)
}
func TestNewCgroupNamespacesEnabled(t *testing.T) {
// If cgroup namespaces are supported in the kernel, then sysInfo.CgroupNamespaces should be TRUE
if _, err := os.Stat("/proc/self/ns/cgroup"); err != nil {
t.Skip("cgroup namespaces must be enabled")
}
sysInfo := New()
assert.Assert(t, sysInfo.CgroupNamespaces)
}
func TestNewCgroupNamespacesDisabled(t *testing.T) {
// If cgroup namespaces are *not* supported in the kernel, then sysInfo.CgroupNamespaces should be FALSE
if _, err := os.Stat("/proc/self/ns/cgroup"); !os.IsNotExist(err) {
t.Skip("cgroup namespaces must be disabled")
}
sysInfo := New()
assert.Assert(t, !sysInfo.CgroupNamespaces)
}
func TestNumCPU(t *testing.T) {
cpuNumbers := NumCPU()
if cpuNumbers <= 0 {
t.Fatal("CPU returned must be greater than zero")
}
}
|
