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
|
package reverse_test
import (
"bytes"
"fmt"
"io/ioutil"
"os"
"syscall"
"testing"
"github.com/rfjakob/gocryptfs/internal/ctlsock"
"github.com/rfjakob/gocryptfs/tests/test_helpers"
)
// TestLongnameStat checks that file names of all sizes (1 to 255) show up in
// the decrypted reverse view (dirC, mounted in TestMain).
func TestLongnameStat(t *testing.T) {
for i := 1; i <= 255; i++ {
name := string(bytes.Repeat([]byte("x"), i))
fd, err := os.Create(dirA + "/" + name)
if err != nil {
t.Fatal(err)
}
fd.Close()
path := dirC + "/" + name
if !test_helpers.VerifyExistence(path) {
t.Fatalf("failed to verify %q", path)
}
test_helpers.VerifySize(t, path, 0)
// A large number of longname files is a performance problem in
// reverse mode. Move the file out of the way once we are done with it
// to speed up the test (2 seconds -> 0.2 seconds).
// We do NOT unlink it because ext4 reuses inode numbers immediately,
// which will cause "Found linked inode, but Nlink == 1" warnings and
// file not found errors.
// TODO: This problem should be handled at the go-fuse level.
syscall.Rename(dirA+"/"+name, test_helpers.TmpDir+"/"+fmt.Sprintf("x%d", i))
}
}
func TestSymlinks(t *testing.T) {
target := "/"
os.Symlink(target, dirA+"/symlink")
cSymlink := dirC + "/symlink"
_, err := os.Lstat(cSymlink)
if err != nil {
t.Errorf("Lstat: %v", err)
}
_, err = os.Stat(cSymlink)
if err != nil {
t.Errorf("Stat: %v", err)
}
actualTarget, err := os.Readlink(cSymlink)
if err != nil {
t.Fatal(err)
}
if target != actualTarget {
t.Errorf("wrong symlink target: want=%q have=%q", target, actualTarget)
}
}
// Symbolic link dentry sizes should be set to the length of the string
// that contains the target path.
func TestSymlinkDentrySize(t *testing.T) {
if plaintextnames {
t.Skip("this only tests encrypted names")
}
symlink := "a_symlink"
mnt, err := ioutil.TempDir(test_helpers.TmpDir, "reverse_mnt_")
if err != nil {
t.Fatal(err)
}
sock := mnt + ".sock"
test_helpers.MountOrFatal(t, "ctlsock_reverse_test_fs", mnt, "-reverse", "-extpass", "echo test", "-ctlsock="+sock)
defer test_helpers.UnmountPanic(mnt)
req := ctlsock.RequestStruct{EncryptPath: symlink}
symlinkResponse := test_helpers.QueryCtlSock(t, sock, req)
if symlinkResponse.ErrNo != 0 {
t.Errorf("Encrypt: %q ErrNo=%d ErrText=%s", symlink, symlinkResponse.ErrNo, symlinkResponse.ErrText)
}
fi, err := os.Lstat(mnt + "/" + symlinkResponse.Result)
if err != nil {
t.Errorf("Lstat: %v", err)
}
target, err := os.Readlink(mnt + "/" + symlinkResponse.Result)
if err != nil {
t.Errorf("Readlink: %v", err)
}
if fi.Size() != int64(len(target)) {
t.Errorf("Lstat reports that symbolic link %q's dentry size is %d, but this does not "+
"match the length of the string returned by readlink, which is %d.",
symlink, fi.Size(), len(target))
}
}
// .gocryptfs.reverse.conf in the plaintext dir should be visible as
// gocryptfs.conf
func TestConfigMapping(t *testing.T) {
c := dirB + "/gocryptfs.conf"
if !test_helpers.VerifyExistence(c) {
t.Errorf("%s missing", c)
}
data, err := ioutil.ReadFile(c)
if err != nil {
t.Fatal(err)
}
if len(data) == 0 {
t.Errorf("empty file")
}
}
// Check that the access() syscall works on virtual files
func TestAccessVirtual(t *testing.T) {
if plaintextnames {
t.Skip("test makes no sense for plaintextnames")
}
var R_OK uint32 = 4
var W_OK uint32 = 2
var X_OK uint32 = 1
fn := dirB + "/gocryptfs.diriv"
err := syscall.Access(fn, R_OK)
if err != nil {
t.Errorf("%q should be readable, but got error: %v", fn, err)
}
err = syscall.Access(fn, W_OK)
if err == nil {
t.Errorf("should NOT be writeable")
}
err = syscall.Access(fn, X_OK)
if err == nil {
t.Errorf("should NOT be executable")
}
}
// Opening a nonexistant file name should return ENOENT
// and not EBADMSG or EIO or anything else.
func TestEnoent(t *testing.T) {
fn := dirB + "/TestEnoent"
_, err := syscall.Open(fn, syscall.O_RDONLY, 0)
if err != syscall.ENOENT {
t.Errorf("want ENOENT, got: %v", err)
}
}
|
