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
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
|
// Copyright 2021 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 mitigate
import (
"fmt"
"io/ioutil"
"os"
"strings"
"testing"
)
type executeTestCase struct {
name string
mitigateData string
mitigateError error
reverseData string
reverseError error
}
func TestExecute(t *testing.T) {
partial := `processor : 1
vendor_id : AuthenticAMD
cpu family : 23
model : 49
model name : AMD EPYC 7B12
physical id : 0
bugs : sysret_ss_attrs spectre_v1 spectre_v2 spec_store_bypass
power management:
`
for _, tc := range []executeTestCase{
{
name: "CascadeLake4",
mitigateData: cascadeLake4.makeCPUString(),
reverseData: cascadeLake4.makeSysPossibleString(),
},
{
name: "Empty",
mitigateData: "",
mitigateError: fmt.Errorf(`mitigate operation failed: no cpus found for: ""`),
reverseData: "",
reverseError: fmt.Errorf(`reverse operation failed: mismatch regex from %s: ""`, allPossibleCPUs),
},
{
name: "Partial",
mitigateData: `processor : 0
vendor_id : AuthenticAMD
cpu family : 23
model : 49
model name : AMD EPYC 7B12
physical id : 0
core id : 0
cpu cores : 1
bugs : sysret_ss_attrs spectre_v1 spectre_v2 spec_store_bypass
power management:
` + partial,
mitigateError: fmt.Errorf(`mitigate operation failed: failed to match key "core id": %q`, partial),
reverseData: "1-",
reverseError: fmt.Errorf(`reverse operation failed: mismatch regex from %s: %q`, allPossibleCPUs, "1-"),
},
} {
doExecuteTest(t, Mitigate{}, tc)
}
}
func TestExecuteSmoke(t *testing.T) {
smokeMitigate, err := ioutil.ReadFile(cpuInfo)
if err != nil {
t.Fatalf("Failed to read %s: %v", cpuInfo, err)
}
smokeReverse, err := ioutil.ReadFile(allPossibleCPUs)
if err != nil {
t.Fatalf("Failed to read %s: %v", allPossibleCPUs, err)
}
doExecuteTest(t, Mitigate{}, executeTestCase{
name: "SmokeTest",
mitigateData: string(smokeMitigate),
reverseData: string(smokeReverse),
})
}
// doExecuteTest runs Execute with the mitigate operation and reverse operation.
func doExecuteTest(t *testing.T, m Mitigate, tc executeTestCase) {
t.Run("Mitigate"+tc.name, func(t *testing.T) {
m.dryRun = true
file, err := ioutil.TempFile("", "outfile.txt")
if err != nil {
t.Fatalf("Failed to create tmpfile: %v", err)
}
defer os.Remove(file.Name())
if _, err := file.WriteString(tc.mitigateData); err != nil {
t.Fatalf("Failed to write to file: %v", err)
}
m.path = file.Name()
got := m.Execute()
if err = checkErr(tc.mitigateError, got); err != nil {
t.Fatalf("Mitigate error mismatch: %v", err)
}
})
t.Run("Reverse"+tc.name, func(t *testing.T) {
m.dryRun = true
m.reverse = true
file, err := ioutil.TempFile("", "outfile.txt")
if err != nil {
t.Fatalf("Failed to create tmpfile: %v", err)
}
defer os.Remove(file.Name())
if _, err := file.WriteString(tc.reverseData); err != nil {
t.Fatalf("Failed to write to file: %v", err)
}
m.path = file.Name()
got := m.Execute()
if err = checkErr(tc.reverseError, got); err != nil {
t.Fatalf("Mitigate error mismatch: %v", err)
}
})
}
// checkErr checks error for equality.
func checkErr(want, got error) error {
switch {
case want == nil && got == nil:
case want != nil && got == nil:
fallthrough
case want == nil && got != nil:
fallthrough
case want.Error() != strings.Trim(got.Error(), " "):
return fmt.Errorf("got: %v want: %v", got, want)
}
return nil
}
|
