Re-design of the original gocryptfs code to work as a library.
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 

935 lines
23 KiB

// Tests run for (almost all) combinations of openssl, aessiv, plaintextnames.
package matrix
// File reading, writing, modification, truncate, ...
//
// Runs all tests N times, for the combinations of different flags specified
// in the `matrix` variable.
import (
"bytes"
"flag"
"fmt"
"io/ioutil"
"math/rand"
"os"
"os/exec"
"path/filepath"
"runtime"
"strings"
"sync"
"syscall"
"testing"
"time"
"golang.org/x/sys/unix"
"github.com/rfjakob/gocryptfs/v2/internal/stupidgcm"
"github.com/rfjakob/gocryptfs/v2/tests/test_helpers"
)
// Several tests need to be aware if plaintextnames is active or not, so make this
// a global variable
var testcase testcaseMatrix
type testcaseMatrix struct {
plaintextnames bool
openssl string
aessiv bool
raw64 bool
extraArgs []string
}
// isSet finds out if `extraArg` is set in `tc.extraArgs`
func (tc *testcaseMatrix) isSet(extraArg string) bool {
for _, v := range tc.extraArgs {
if v == extraArg {
return true
}
}
return false
}
var matrix = []testcaseMatrix{
// Normal
{false, "auto", false, false, nil},
{false, "true", false, false, nil},
{false, "false", false, false, nil},
// Plaintextnames
{true, "true", false, false, nil},
{true, "false", false, false, nil},
// AES-SIV (does not use openssl, no need to test permutations)
{false, "auto", true, false, nil},
{true, "auto", true, false, nil},
// Raw64
{false, "auto", false, true, nil},
// -serialize_reads
{false, "auto", false, false, []string{"-serialize_reads"}},
{false, "auto", false, false, []string{"-sharedstorage"}},
{false, "auto", false, false, []string{"-deterministic-names"}},
// Test xchacha with and without openssl
{false, "true", false, true, []string{"-xchacha"}},
{false, "false", false, true, []string{"-xchacha"}},
}
// This is the entry point for the tests
func TestMain(m *testing.M) {
// Make "testing.Verbose()" return the correct value
flag.Parse()
var i int
for i, testcase = range matrix {
if testcase.openssl == "true" && stupidgcm.BuiltWithoutOpenssl {
continue
}
if testing.Verbose() {
fmt.Printf("matrix: testcase = %#v\n", testcase)
}
createDirIV := true
if testcase.plaintextnames {
createDirIV = false
} else if testcase.isSet("-deterministic-names") {
createDirIV = false
}
test_helpers.ResetTmpDir(createDirIV)
opts := []string{"-zerokey"}
//opts = append(opts, "-fusedebug")
opts = append(opts, fmt.Sprintf("-openssl=%v", testcase.openssl))
opts = append(opts, fmt.Sprintf("-plaintextnames=%v", testcase.plaintextnames))
opts = append(opts, fmt.Sprintf("-aessiv=%v", testcase.aessiv))
opts = append(opts, fmt.Sprintf("-raw64=%v", testcase.raw64))
opts = append(opts, testcase.extraArgs...)
test_helpers.MountOrExit(test_helpers.DefaultCipherDir, test_helpers.DefaultPlainDir, opts...)
before := test_helpers.ListFds(0, test_helpers.TmpDir)
t0 := time.Now()
r := m.Run()
if testing.Verbose() {
fmt.Printf("matrix: run took %v\n", time.Since(t0))
}
// Catch fd leaks in the tests. NOTE: this does NOT catch leaks in
// the gocryptfs FUSE process, but only in the tests that access it!
// All fds that point outside TmpDir are not interesting (the Go test
// infrastucture creates temporary log files we don't care about).
after := test_helpers.ListFds(0, test_helpers.TmpDir)
if len(before) != len(after) {
fmt.Printf("fd leak in test process? before, after:\n%v\n%v\n", before, after)
os.Exit(1)
}
test_helpers.UnmountPanic(test_helpers.DefaultPlainDir)
if r != 0 {
fmt.Printf("TestMain: matrix[%d] = %#v failed\n", i, testcase)
os.Exit(r)
}
}
os.Exit(0)
}
// Write `n` random bytes to filename `fn`, read again, compare hash
func testWriteN(t *testing.T, fn string, n int) string {
file, err := os.Create(test_helpers.DefaultPlainDir + "/" + fn)
if err != nil {
t.Fatal(err)
}
d := make([]byte, n)
for i := range d {
// Fill with pattern
d[i] = byte(rand.Int())
}
_, err = file.Write(d)
if err != nil {
t.Fatal(err)
}
err = file.Close()
if err != nil {
t.Fatal(err)
}
test_helpers.VerifySize(t, test_helpers.DefaultPlainDir+"/"+fn, n)
hashWant := test_helpers.Md5hex(d)
hashActual := test_helpers.Md5fn(test_helpers.DefaultPlainDir + "/" + fn)
if hashActual != hashWant {
t.Errorf("Wrong content, hashWant=%s hashActual=%s", hashWant, hashActual)
}
return hashActual
}
func TestWrite10(t *testing.T) {
testWriteN(t, "10", 10)
}
func TestWrite100(t *testing.T) {
testWriteN(t, "100", 100)
}
func TestWrite1M(t *testing.T) {
testWriteN(t, "1M", 1024*1024)
}
func TestWrite100x100(t *testing.T) {
hashWant := testWriteN(t, "100x100", 100)
// Read and check 100 times to catch race conditions
var i int
for i = 0; i < 100; i++ {
hashActual := test_helpers.Md5fn(test_helpers.DefaultPlainDir + "/100x100")
if hashActual != hashWant {
fmt.Printf("Read corruption in loop #%d: have=%s want=%s\n", i, hashActual, hashWant)
t.FailNow()
} else {
//fmt.Print(".")
}
}
}
func TestWrite10Tight(t *testing.T) {
path := test_helpers.DefaultPlainDir + "/TestWrite10Tight"
content := make([]byte, 10)
buf := make([]byte, 100)
for i := 0; i < 100; i++ {
file, err := os.Create(path)
if err != nil {
t.Fatal(err)
}
_, err = file.Write(content)
if err != nil {
t.Fatal(err)
}
err = file.Close()
if err != nil {
t.Fatal(err)
}
file, err = os.Open(path)
if err != nil {
t.Fatal(err)
}
n, err := file.Read(buf)
if err != nil {
t.Fatal(err)
}
if n != 10 {
t.Fatalf("want 10 bytes, got %d", n)
}
err = file.Close()
if err != nil {
t.Fatal(err)
}
err = os.Remove(path)
if err != nil {
t.Fatal()
}
}
}
// Hint for calculating reference md5sums:
// dd if=/dev/zero count=1 bs=XYZ | md5sum
func TestTruncate(t *testing.T) {
fn := test_helpers.DefaultPlainDir + "/truncate"
file, err := os.Create(fn)
if err != nil {
t.FailNow()
}
defer file.Close()
// Grow to two blocks
file.Truncate(7000)
test_helpers.VerifySize(t, fn, 7000)
if md5 := test_helpers.Md5fn(fn); md5 != "95d4ec7038e3e4fdbd5f15c34c3f0b34" {
t.Errorf("Wrong md5 %s", md5)
}
// Shrink - needs RMW
file.Truncate(6999)
test_helpers.VerifySize(t, fn, 6999)
if md5 := test_helpers.Md5fn(fn); md5 != "35fd15873ec6c35380064a41b9b9683b" {
t.Errorf("Wrong md5 %s", md5)
}
// Shrink to one partial block
file.Truncate(465)
test_helpers.VerifySize(t, fn, 465)
if md5 := test_helpers.Md5fn(fn); md5 != "a1534d6e98a6b21386456a8f66c55260" {
t.Errorf("Wrong md5 %s", md5)
}
// Grow to exactly one block
file.Truncate(4096)
test_helpers.VerifySize(t, fn, 4096)
if md5 := test_helpers.Md5fn(fn); md5 != "620f0b67a91f7f74151bc5be745b7110" {
t.Errorf("Wrong md5 %s", md5)
}
// Truncate to zero
file.Truncate(0)
test_helpers.VerifySize(t, fn, 0)
// Grow to 10MB (creates file holes)
var sz int
sz = 10 * 1024 * 1024
file.Truncate(int64(sz))
test_helpers.VerifySize(t, fn, sz)
if md5 := test_helpers.Md5fn(fn); md5 != "f1c9645dbc14efddc7d8a322685f26eb" {
t.Errorf("Wrong md5 %s", md5)
}
// Grow to 10MB + 100B (partial block on the end)
sz = 10*1024*1024 + 100
file.Truncate(int64(sz))
test_helpers.VerifySize(t, fn, sz)
if md5 := test_helpers.Md5fn(fn); md5 != "c23ea79b857b91a7ff07c6ecf185f1ca" {
t.Errorf("Wrong md5 %s", md5)
}
// Grow to 20MB (creates file holes, partial block on the front)
sz = 20 * 1024 * 1024
file.Truncate(int64(sz))
test_helpers.VerifySize(t, fn, sz)
if md5 := test_helpers.Md5fn(fn); md5 != "8f4e33f3dc3e414ff94e5fb6905cba8c" {
t.Errorf("Wrong md5 %s", md5)
}
}
func TestAppend(t *testing.T) {
fn := test_helpers.DefaultPlainDir + "/append"
file, err := os.Create(fn)
if err != nil {
t.FailNow()
}
defer file.Close()
data := []byte("testdata123456789") // length 17
var buf bytes.Buffer
var hashWant string
for i := 0; i <= 500; i++ {
file.Write(data)
buf.Write(data)
hashWant = test_helpers.Md5hex(buf.Bytes())
hashActual := test_helpers.Md5fn(fn)
if hashWant != hashActual {
t.FailNow()
}
}
// Overwrite with the same data
// Hash must stay the same
file.Seek(0, 0)
for i := 0; i <= 500; i++ {
file.Write(data)
hashActual := test_helpers.Md5fn(fn)
if hashWant != hashActual {
t.FailNow()
}
}
}
// Create a file with holes by writing to offset 0 (block #0) and
// offset 4096 (block #1).
func TestFileHoles(t *testing.T) {
fn := test_helpers.DefaultPlainDir + "/fileholes"
file, err := os.Create(fn)
if err != nil {
t.Errorf("file create failed")
}
defer file.Close()
foo := []byte("foo")
file.Write(foo)
file.WriteAt(foo, 4096)
_, err = ioutil.ReadFile(fn)
if err != nil {
t.Error(err)
}
}
func TestRmwRace(t *testing.T) {
runtime.GOMAXPROCS(10)
fn := test_helpers.DefaultPlainDir + "/rmwrace"
f1, err := os.Create(fn)
if err != nil {
t.Fatalf("file create failed")
}
defer f1.Close()
f2, err := os.Create(fn)
if err != nil {
t.Fatalf("file create failed")
}
defer f2.Close()
oldBlock := bytes.Repeat([]byte("o"), 4096)
newBlock := bytes.Repeat([]byte("n"), 4096)
shortBlock := bytes.Repeat([]byte("s"), 16)
mergedBlock := make([]byte, 4096)
copy(mergedBlock, newBlock)
copy(mergedBlock[4080:], shortBlock)
goodMd5 := make(map[string]int)
for i := 0; i < 1000; i++ {
// Reset to [ooooooooo]
_, err = f1.WriteAt(oldBlock, 0)
if err != nil {
t.Fatalf("Write failed")
}
var wg sync.WaitGroup
wg.Add(2)
// Write to the end of the file, [....ssss]
go func() {
f1.WriteAt(shortBlock, 4080)
wg.Done()
}()
// Overwrite to [nnnnnnn]
go func() {
f2.WriteAt(newBlock, 0)
wg.Done()
}()
wg.Wait()
// The file should be either:
// [nnnnnnnnnn] (md5: 6c1660fdabccd448d1359f27b3db3c99) or
// [nnnnnnssss] (md5: da885006a6a284530a427c73ce1e5c32)
// but it must not be
// [oooooossss]
buf, _ := ioutil.ReadFile(fn)
m := test_helpers.Md5hex(buf)
goodMd5[m] = goodMd5[m] + 1
/*
if m == "6c1660fdabccd448d1359f27b3db3c99" {
fmt.Println(hex.Dump(buf))
t.FailNow()
}
*/
}
}
// With "--plaintextnames", the name "/gocryptfs.conf" is reserved.
// Otherwise there should be no restrictions.
func TestFiltered(t *testing.T) {
filteredFile := test_helpers.DefaultPlainDir + "/gocryptfs.conf"
file, err := os.Create(filteredFile)
if testcase.plaintextnames && err == nil {
t.Errorf("should have failed but didn't")
} else if !testcase.plaintextnames && err != nil {
t.Error(err)
}
file.Close()
err = os.Remove(filteredFile)
if testcase.plaintextnames && err == nil {
t.Errorf("should have failed but didn't")
} else if !testcase.plaintextnames && err != nil {
t.Error(err)
}
}
func TestFilenameEncryption(t *testing.T) {
file, err := os.Create(test_helpers.DefaultPlainDir + "/TestFilenameEncryption.txt")
file.Close()
if err != nil {
t.Fatal(err)
}
_, err = os.Stat(test_helpers.DefaultCipherDir + "/TestFilenameEncryption.txt")
if testcase.plaintextnames && err != nil {
t.Errorf("plaintextnames not working: %v", err)
} else if !testcase.plaintextnames && err == nil {
t.Errorf("file name encryption not working")
}
}
// Test Rename
func TestRename(t *testing.T) {
test_helpers.TestRename(t, test_helpers.DefaultPlainDir)
}
// Test that names of all lengths work
func TestNameLengths(t *testing.T) {
f, err := os.Open(test_helpers.DefaultPlainDir)
if err != nil {
t.Fatal(err)
}
entries, err := f.Readdirnames(0)
if err != nil {
t.Fatal(err)
}
f.Close()
cnt1 := len(entries)
wd := test_helpers.DefaultPlainDir + "/"
name := "x"
for len(name) < 2000 {
f, err := os.Create(wd + name + "x")
if err != nil {
break
}
name = name + "x"
f.Close()
f, err = os.Open(test_helpers.DefaultPlainDir)
if err != nil {
t.Fatal(err)
}
// In v1.7-rc2, we had a bug that allowed creation of too-long names.
// This threw errors in like this in READDIR:
//
// OpenDir ".": invalid entry "gocryptfs.longname.wrE-izsR9ciEkP7JSCFDrk_d_Nj4mQo1dGY6hjuixAU=":
// Could not read .name: ReadLongName: size=345 > limit=344
//
entries, err = f.Readdirnames(0)
if err != nil {
t.Fatal(err)
}
f.Close()
cnt2 := len(entries)
if cnt2 != cnt1+1 {
t.Fatalf("len=%d: expected %d dir entries, have %d: %v", len(name), cnt1+1, cnt2, entries)
}
err = syscall.Unlink(wd + name)
if err != nil {
t.Fatal(err)
}
}
if len(name) != 255 {
t.Errorf("maxlen=%d", len(name))
}
}
func TestLongNames(t *testing.T) {
fi, err := ioutil.ReadDir(test_helpers.DefaultCipherDir)
if err != nil {
t.Fatal(err)
}
cnt1 := len(fi)
wd := test_helpers.DefaultPlainDir + "/"
// Create file with long name
n255x := string(bytes.Repeat([]byte("x"), 255))
f, err := os.Create(wd + n255x)
if err != nil {
t.Fatalf("Could not create n255x: %v", err)
}
f.Close()
if !test_helpers.VerifyExistence(t, wd+n255x) {
t.Errorf("n255x is not in directory listing")
}
// Rename long to long (target does not exist)
n255y := string(bytes.Repeat([]byte("y"), 255))
err = os.Rename(wd+n255x, wd+n255y)
if err != nil {
t.Fatalf("Could not rename n255x to n255y: %v", err)
}
if !test_helpers.VerifyExistence(t, wd+n255y) {
t.Errorf("n255y is not in directory listing")
}
// Rename long to long (target exists)
f, err = os.Create(wd + n255x)
if err != nil {
t.Fatalf("Could not create n255x: %v", err)
}
f.Close()
err = os.Rename(wd+n255x, wd+n255y)
if err != nil {
t.Fatalf("Could not rename n255x to n255y: %v", err)
}
if !test_helpers.VerifyExistence(t, wd+n255y) {
t.Errorf("n255y is not in directory listing")
}
// Rename long to short (target does not exist)
err = os.Rename(wd+n255y, wd+"short")
if err != nil {
t.Fatalf("Could not rename n255y to short: %v", err)
}
if !test_helpers.VerifyExistence(t, wd+"short") {
t.Errorf("short is not in directory listing")
}
// Rename long to short (target exists)
f, err = os.Create(wd + n255y)
if err != nil {
t.Fatalf("Could not create n255y: %v", err)
}
f.Close()
err = os.Rename(wd+n255y, wd+"short")
if err != nil {
t.Fatalf("Could not rename n255y to short: %v", err)
}
if !test_helpers.VerifyExistence(t, wd+"short") {
t.Errorf("short is not in directory listing")
}
// Rename short to long (target does not exist)
err = os.Rename(wd+"short", wd+n255x)
if err != nil {
t.Fatalf("Could not rename short to n255x: %v", err)
}
if !test_helpers.VerifyExistence(t, wd+n255x) {
t.Errorf("255x is not in directory listing II")
}
// Rename short to long (target exists)
f, err = os.Create(wd + "short")
if err != nil {
t.Fatalf("Could not create short: %v", err)
}
f.Close()
err = os.Rename(wd+"short", wd+n255x)
if err != nil {
t.Fatalf("Could not rename short to n255x: %v", err)
}
if !test_helpers.VerifyExistence(t, wd+n255x) {
t.Errorf("n255x is not in directory listing")
}
// Unlink
err = syscall.Unlink(wd + n255x)
if err != nil {
t.Fatalf("Could not unlink n255x: %v", err)
}
if test_helpers.VerifyExistence(t, wd+n255x) {
t.Errorf("n255x still there after unlink")
}
// Long symlink
n255s := string(bytes.Repeat([]byte("s"), 255))
err = os.Symlink("/", wd+n255s)
if err != nil {
t.Fatal(err)
}
if !test_helpers.VerifyExistence(t, wd+n255s) {
t.Errorf("n255s is not in directory listing")
}
err = syscall.Unlink(wd + n255s)
if err != nil {
t.Error(err)
}
// Long dir
n255d := string(bytes.Repeat([]byte("d"), 255))
err = os.Mkdir(wd+n255d, 0777)
if err != nil {
t.Fatal(err)
}
err = syscall.Rmdir(wd + n255d)
if err != nil {
t.Error(err)
}
// Check for orphaned files
fi, err = ioutil.ReadDir(test_helpers.DefaultCipherDir)
if err != nil {
t.Fatal(err)
}
cnt2 := len(fi)
if cnt1 != cnt2 {
t.Errorf("Leftover files, cnt1=%d cnt2=%d", cnt1, cnt2)
}
}
// Create hard link with long name.
// This was broken up to v1.2.
func TestLongLink(t *testing.T) {
wd := test_helpers.DefaultPlainDir + "/"
target := wd + "TestLongLink.target"
f, err := os.Create(target)
if err != nil {
t.Fatalf("%v", err)
}
f.Close()
l255 := string(bytes.Repeat([]byte("l"), 255))
err = os.Link(target, wd+l255)
if err != nil {
t.Error(err)
}
}
func TestLchown(t *testing.T) {
name := test_helpers.DefaultPlainDir + "/symlink"
err := os.Symlink("/target/does/not/exist", name)
if err != nil {
t.Fatal(err)
}
err = os.Chown(name, os.Getuid(), os.Getgid())
if err == nil {
t.Error("Chown on dangling symlink should fail")
}
err = os.Lchown(name, os.Getuid(), os.Getgid())
if err != nil {
t.Error(err)
}
}
// Set nanoseconds by path, symlink
func TestUtimesNanoSymlink(t *testing.T) {
if runtime.GOOS == "darwin" {
t.Skipf("MacOS \"touch\" does not support \"--no-dereference\"")
}
path := test_helpers.DefaultPlainDir + "/utimesnano_symlink"
err := os.Symlink("/some/nonexisting/file", path)
if err != nil {
t.Fatal(err)
}
// syscall.UtimesNano does not provide a way to pass AT_SYMLINK_NOFOLLOW,
// so we call the external utility "touch", which does.
cmd := exec.Command("touch", "--no-dereference", path)
cmd.Stderr = os.Stderr
cmd.Stdout = os.Stdout
err = cmd.Run()
if err != nil {
t.Error(err)
}
}
type utimesTestcaseStruct struct {
// Input atime and mtime
in [2]syscall.Timespec
// Expected output atime and mtime
out [2]syscall.Timespec
}
// compareTimespec return true if the two passed Timespec are identical.
func compareTimespec(want syscall.Timespec, actual syscall.Timespec) bool {
if want.Sec != actual.Sec {
return false
}
if want.Nsec != actual.Nsec {
return false
}
return true
}
const _UTIME_OMIT = ((1 << 30) - 2)
// doTestUtimesNano verifies that setting nanosecond-precision times on "path"
// works correctly. Pass "/proc/self/fd/N" to test a file descriptor.
func doTestUtimesNano(t *testing.T, path string) {
utimeTestcases := []utimesTestcaseStruct{
{
in: [2]syscall.Timespec{{Sec: 50, Nsec: 0}, {Sec: 51, Nsec: 0}},
out: [2]syscall.Timespec{{Sec: 50, Nsec: 0}, {Sec: 51, Nsec: 0}},
},
{
in: [2]syscall.Timespec{{Sec: 1, Nsec: 2}, {Sec: 3, Nsec: 4}},
out: [2]syscall.Timespec{{Sec: 1, Nsec: 2}, {Sec: 3, Nsec: 4}},
},
{
in: [2]syscall.Timespec{{Sec: 7, Nsec: 8}, {Sec: 99, Nsec: _UTIME_OMIT}},
out: [2]syscall.Timespec{{Sec: 7, Nsec: 8}, {Sec: 3, Nsec: 4}},
},
{
in: [2]syscall.Timespec{{Sec: 99, Nsec: _UTIME_OMIT}, {Sec: 5, Nsec: 6}},
out: [2]syscall.Timespec{{Sec: 7, Nsec: 8}, {Sec: 5, Nsec: 6}},
},
}
if runtime.GOOS == "darwin" {
// darwin neither supports UTIME_OMIT nor nanoseconds (!?)
utimeTestcases = utimeTestcases[:1]
}
for i, tc := range utimeTestcases {
err := syscall.UtimesNano(path, tc.in[:])
if err != nil {
t.Fatalf("%q: %v", path, err)
}
var st syscall.Stat_t
err = syscall.Stat(path, &st)
if err != nil {
t.Fatal(err)
}
want := tc.out
have := extractAtimeMtime(st)
if !compareTimespec(want[0], have[0]) {
t.Errorf("Testcase %d: atime: want=%+v, have=%+v", i, want[0], have[0])
}
if !compareTimespec(want[1], have[1]) {
t.Errorf("Testcase %d: mtime: want=%+v, have=%+v", i, want[1], have[1])
}
}
}
// Set nanoseconds by path, normal file
func TestUtimesNano(t *testing.T) {
path := test_helpers.DefaultPlainDir + "/utimesnano"
err := ioutil.WriteFile(path, []byte("foobar"), 0600)
if err != nil {
t.Fatal(err)
}
doTestUtimesNano(t, path)
}
// Set nanoseconds by fd
func TestUtimesNanoFd(t *testing.T) {
if runtime.GOOS == "darwin" {
t.Skipf("MacOS does not have /proc")
}
path := test_helpers.DefaultPlainDir + "/utimesnanofd"
f, err := os.Create(path)
if err != nil {
t.Fatal(err)
}
defer f.Close()
procPath := fmt.Sprintf("/proc/self/fd/%d", f.Fd())
doTestUtimesNano(t, procPath)
}
// Make sure the Mknod call works by creating a fifo (named pipe)
func TestMkfifo(t *testing.T) {
path := test_helpers.DefaultPlainDir + "/fifo1"
err := syscall.Mkfifo(path, 0700)
if err != nil {
t.Fatal(err)
}
path = test_helpers.DefaultPlainDir + "/gocryptfs.longname.XXX"
err = syscall.Mkfifo(path, 0700)
if err != nil {
t.Fatal(err)
}
err = os.Remove(path)
if err != nil {
t.Fatal(err)
}
}
// TestMagicNames verifies that "magic" names are handled correctly
// https://github.com/rfjakob/gocryptfs/issues/174
func TestMagicNames(t *testing.T) {
names := []string{"warmup1", "warmup2", "gocryptfs.longname.QhUr5d9FHerwEs--muUs6_80cy6JRp89c1otLwp92Cs", "gocryptfs.diriv"}
for _, n := range names {
t.Logf("Testing n=%q", n)
p := test_helpers.DefaultPlainDir + "/" + n
// Create file
err := ioutil.WriteFile(p, []byte("xxxxxxx"), 0200)
if err != nil {
t.Fatalf("creating file %q failed: %v", n, err)
}
// Rename magic to normal
err = os.Rename(p, test_helpers.DefaultPlainDir+"/x")
if err != nil {
t.Fatalf("rename 1 failed: %v", err)
}
// Rename normal to magic
err = os.Rename(test_helpers.DefaultPlainDir+"/x", p)
if err != nil {
t.Fatalf("rename 2 failed: %v", err)
}
// Unlink
err = syscall.Unlink(p)
if err != nil {
t.Fatal(err)
}
// Mkdir
err = os.Mkdir(p, 0700)
if err != nil {
t.Fatal(err)
}
// Rmdir
err = syscall.Rmdir(p)
if err != nil {
t.Fatal(err)
}
// Symlink
err = syscall.Symlink("xxxyyyyzzz", p)
if err != nil {
t.Fatal(err)
}
syscall.Unlink(p)
// Link
target := test_helpers.DefaultPlainDir + "/linktarget"
err = ioutil.WriteFile(target, []byte("yyyyy"), 0600)
if err != nil {
t.Fatal(err)
}
err = syscall.Link(target, p)
if err != nil {
t.Fatal(err)
}
}
}
// Test that chmod works correctly
func TestChmod(t *testing.T) {
path := test_helpers.DefaultPlainDir + "/" + t.Name()
file, err := os.Create(path)
if err != nil {
t.Fatal(err)
}
file.Close()
modes := []os.FileMode{0777, 0707, 0606, 0666, 0444, 0000, 0111, 0123, 0321}
for _, modeWant := range modes {
fi, err := os.Stat(path)
if err != nil {
t.Fatal(err)
}
err = syscall.Chmod(path, uint32(modeWant))
if err != nil {
t.Errorf("chmod %03o -> %03o failed: %v", fi.Mode(), modeWant, err)
continue
}
fi, err = os.Stat(path)
if err != nil {
t.Fatal(err)
}
modeHave := fi.Mode()
if modeHave != modeWant {
t.Errorf("modeHave %#o != modeWant %#o", modeHave, modeWant)
}
}
}
// Test that access(2) works correctly
func TestAccess(t *testing.T) {
path := test_helpers.DefaultPlainDir + "/" + t.Name()
file, err := os.Create(path)
if err != nil {
t.Fatal(err)
}
defer file.Close()
err = unix.Access(path, unix.F_OK)
if err != nil {
t.Error(err)
}
err = unix.Access(path, unix.R_OK)
if err != nil {
t.Error(err)
}
err = unix.Access(path, unix.X_OK)
if err == nil {
t.Error("X_OK should have failed")
}
}
func TestStatfs(t *testing.T) {
var st syscall.Statfs_t
syscall.Statfs(test_helpers.DefaultPlainDir, &st)
if st.Bsize == 0 {
t.Errorf("statfs reports size zero: %#v", st)
}
}
// gocryptfs 2.0 reported the ciphertext size on symlink creation, causing
// confusion: https://github.com/rfjakob/gocryptfs/issues/574
func TestSymlinkSize(t *testing.T) {
p := filepath.Join(test_helpers.DefaultPlainDir, t.Name())
// SYMLINK reports the size to the kernel
if err := syscall.Symlink("foo", p); err != nil {
t.Fatal(err)
}
// Kernel serves us this value from the attr cache
var st syscall.Stat_t
if err := syscall.Lstat(p, &st); err != nil {
t.Fatal(err)
}
if st.Size != 3 {
t.Errorf("wrong size: have %d, want %d", st.Size, 3)
}
}
// TestPwd check that /usr/bin/pwd works inside gocryptfs.
//
// This was broken in gocryptfs v2.0 with -sharedstorage:
// https://github.com/rfjakob/gocryptfs/issues/584
func TestPwd(t *testing.T) {
dir := test_helpers.DefaultPlainDir
for i := 0; i < 3; i++ {
cmd := exec.Command("pwd")
cmd.Dir = dir
out, err := cmd.CombinedOutput()
if err != nil {
t.Log(strings.TrimSpace(string(out)))
t.Fatalf("dir %q: %v", dir, err)
}
dir = dir + "/" + t.Name()
os.Mkdir(dir, 0700)
}
}