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
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
|
// Tests and benchmarks performed with default settings only.
package defaults
import (
"bytes"
"io"
"io/ioutil"
"os"
"os/exec"
"runtime"
"sync"
"testing"
"github.com/rfjakob/gocryptfs/tests/test_helpers"
)
func TestMain(m *testing.M) {
test_helpers.ResetTmpDir(true)
test_helpers.MountOrExit(test_helpers.DefaultCipherDir, test_helpers.DefaultPlainDir, "-zerokey")
r := m.Run()
test_helpers.UnmountPanic(test_helpers.DefaultPlainDir)
os.Exit(r)
}
// Test that we get the right timestamp when extracting a tarball.
func Test1980Tar(t *testing.T) {
c := exec.Command("tar", "xzf", "1980.tar.gz", "-C", test_helpers.DefaultPlainDir)
c.Stderr = os.Stderr
c.Stdout = os.Stdout
err := c.Run()
if err != nil {
t.Fatal(err)
}
fi, err := os.Stat(test_helpers.DefaultPlainDir + "/1980.txt")
if err != nil {
t.Fatal(err)
}
m := fi.ModTime().Unix()
if m != 315619323 {
t.Errorf("Wrong mtime: %d", m)
}
}
// In gocryptfs before v1.2, the file header was only read once for each
// open. But truncating a file to zero will generate a new random file ID.
// The sequence below caused an I/O error to be returned.
func TestOpenTruncateRead(t *testing.T) {
fn := test_helpers.DefaultPlainDir + "/TestTruncateWrite"
// First FD is used for write and trucate.
writeFd, err := os.Create(fn)
if err != nil {
t.Fatal(err)
}
defer writeFd.Close()
abc := []byte("abc")
_, err = writeFd.WriteAt(abc, 0)
if err != nil {
t.Fatal(err)
}
// Second FD is just for reading.
readFd, err := os.Open(fn)
if err != nil {
t.Fatal(err)
}
defer readFd.Close()
content := make([]byte, 3)
_, err = readFd.ReadAt(content, 0)
if err != nil {
t.Fatal(err)
}
if !bytes.Equal(content, abc) {
t.Fatalf("wrong content: %s", string(content))
}
// Truncate to zero to generate a new file ID and write new content.
err = writeFd.Truncate(0)
if err != nil {
t.Fatal(err)
}
xyz := []byte("xyz")
_, err = writeFd.WriteAt(xyz, 0)
if err != nil {
t.Fatal(err)
}
// Try to read from the other FD.
_, err = readFd.ReadAt(content, 0)
if err != nil {
t.Fatal(err)
}
if !bytes.Equal(content, xyz) {
t.Fatalf("wrong content: %s", string(content))
}
}
// TestWORead tries to read from a write-only FD.
func TestWORead(t *testing.T) {
fn := test_helpers.DefaultPlainDir + "/TestWORead"
fd, err := os.OpenFile(fn, os.O_CREATE|os.O_WRONLY, 0600)
if err != nil {
t.Fatal(err)
}
defer fd.Close()
buf := make([]byte, 10)
_, err = fd.Read(buf)
if err == nil {
t.Error("Reading from write-only file should fail, but did not")
}
}
// xfstests generic/124 triggers this warning:
// cipherSize 18 == header size: interrupted write?
// This test reproduces the problem.
func TestXfs124(t *testing.T) {
// GOMAXPROCS=8 and N=5000 seem to reliably trigger the problem. With N=1000,
// the test passes sometimes.
runtime.GOMAXPROCS(8)
N := 5000
fn := test_helpers.DefaultPlainDir + "/TestXfs124"
fd, err := os.Create(fn)
if err != nil {
t.Fatal(err)
}
defer fd.Close()
var wg sync.WaitGroup
wg.Add(2)
go func() {
buf := make([]byte, 10)
var err2 error
for i := 0; i < N; i++ {
err2 = fd.Truncate(0)
if err2 != nil {
panic(err2)
}
_, err2 = fd.WriteAt(buf, 0)
if err2 != nil {
panic(err2)
}
}
wg.Done()
}()
fd2, err := os.Open(fn)
if err != nil {
t.Fatal(err)
}
defer fd2.Close()
go func() {
buf := make([]byte, 10)
var err3 error
for i := 0; i < N; i++ {
_, err3 = fd2.ReadAt(buf, 0)
if err3 == io.EOF {
continue
}
if err3 != nil {
panic(err3)
}
}
wg.Done()
}()
wg.Wait()
}
func TestWrite0200File(t *testing.T) {
fn := test_helpers.DefaultPlainDir + "/TestWrite0200File"
err := ioutil.WriteFile(fn, nil, 0200)
if err != nil {
t.Fatalf("creating empty file failed: %v", err)
}
fd, err := os.OpenFile(fn, os.O_WRONLY, 0)
if err != nil {
t.Fatal(err)
}
fi, err := fd.Stat()
if err != nil {
t.Fatal(err)
}
perms := fi.Mode().Perm()
if perms != 0200 {
t.Fatal("wrong initial permissions")
}
defer fd.Close()
_, err = fd.Write(make([]byte, 10))
if err != nil {
t.Fatal(err)
}
perms = fi.Mode().Perm()
if perms != 0200 {
t.Fatal("wrong restored permissions")
}
}
// When xattr support was introduced, mv threw warnings like these:
// mv: preserving permissions for ‘b/x’: Operation not permitted
// because we returned EPERM when it tried to set system.posix_acl_access.
// Now we return EOPNOTSUPP and mv is happy.
func TestMvWarnings(t *testing.T) {
fn := test_helpers.TmpDir + "/TestMvWarnings"
err := ioutil.WriteFile(fn, nil, 0600)
if err != nil {
t.Fatalf("creating file failed: %v", err)
}
cmd := exec.Command("mv", fn, test_helpers.DefaultPlainDir)
out, err := cmd.CombinedOutput()
if err != nil {
t.Log(string(out))
t.Fatal(err)
}
if len(out) != 0 {
t.Fatalf("Got warnings from mv:\n%s", string(out))
}
}
// See TestCpWarnings.
func TestCpWarnings(t *testing.T) {
fn := test_helpers.TmpDir + "/TestCpWarnings"
err := ioutil.WriteFile(fn, []byte("foo"), 0600)
if err != nil {
t.Fatalf("creating file failed: %v", err)
}
cmd := exec.Command("cp", "-a", fn, test_helpers.DefaultPlainDir)
out, err := cmd.CombinedOutput()
if err != nil {
t.Log(string(out))
t.Fatal(err)
}
if len(out) != 0 {
t.Fatalf("Got warnings from cp -a:\n%s", string(out))
}
}
|
