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// test gocryptfs cipherdir mounted multiple times at the same time
package sharedstorage
import (
"fmt"
"os"
"testing"
"time"
"golang.org/x/sys/unix"
"github.com/rfjakob/gocryptfs/v2/tests/test_helpers"
)
var flagSharestorage bool
// EntryTimeout is 1 second, give the kernel 1.1 second to actually
// expire an entry. The tests fail sometime with 1.0 second!
const waitForExpire = time.Second + 100*time.Millisecond
func TestMain(m *testing.M) {
ret := 0
flagSharestorage = false
ret += m.Run()
flagSharestorage = true
ret += m.Run()
os.Exit(ret)
}
type testCase struct {
t *testing.T
cipherdir string
mnt1 string
mnt2 string
}
func newTestCase(t *testing.T) *testCase {
tc := testCase{}
tc.cipherdir = test_helpers.InitFS(t)
tc.mnt1 = tc.cipherdir + ".mnt1"
tc.mnt2 = tc.cipherdir + ".mnt2"
mountSharedstorage(t, tc.cipherdir, tc.mnt1)
mountSharedstorage(t, tc.cipherdir, tc.mnt2)
t.Logf("newTestCase: sharedstorage=%v cipherdir=%q", flagSharestorage, tc.cipherdir)
return &tc
}
func (tc *testCase) cleanup() {
for _, mnt := range []string{tc.mnt1, tc.mnt2} {
err := test_helpers.UnmountErr(mnt)
if err != nil {
tc.t.Error(err)
}
}
}
// mountSharedstorage mounts `cipherdir` on `mnt` with or without the
// `-sharedstorage` flag, depending on the global var `flagSharestorage`.
func mountSharedstorage(t *testing.T, cipherdir string, mnt string) {
args := []string{"-extpass=echo test"}
if flagSharestorage {
args = append(args, "-sharedstorage")
}
test_helpers.MountOrFatal(t, cipherdir, mnt, args...)
}
func TestDirUnlink(t *testing.T) {
tc := newTestCase(t)
defer tc.cleanup()
// Create dir via mnt1
if err := unix.Mkdir(tc.mnt1+"/foo", 0700); err != nil {
t.Fatal(err)
}
// Replace dir with file via mnt2
if err := unix.Rmdir(tc.mnt2 + "/foo"); err != nil {
t.Fatal(err)
}
if fd, err := unix.Open(tc.mnt2+"/foo", unix.O_CREAT|unix.O_WRONLY|unix.O_TRUNC, 0600); err != nil {
t.Fatal(err)
} else {
unix.Close(fd)
}
// Try to unlink via mnt1
if err := unix.Unlink(tc.mnt1 + "/foo"); err != nil {
// Must work with -sharedstorage
if flagSharestorage {
t.Fatal(err)
} else {
// Must always work after cache timeout
time.Sleep(waitForExpire)
if err := unix.Unlink(tc.mnt1 + "/foo"); err != nil {
t.Fatal(err)
}
}
}
}
// TestStaleHardlinks always failed before
// https://review.gerrithub.io/c/hanwen/go-fuse/+/513646/2
func TestStaleHardlinks(t *testing.T) {
tc := newTestCase(t)
defer tc.cleanup()
link0 := tc.mnt1 + "/link0"
if fd, err := unix.Open(link0, unix.O_CREAT|unix.O_WRONLY|unix.O_TRUNC, 0600); err != nil {
t.Fatal(err)
} else {
unix.Close(fd)
}
// Create hardlinks via mnt1
for i := 1; i < 20; i++ {
linki := fmt.Sprintf(tc.mnt1+"/link%d", i)
if err := unix.Link(link0, linki); err != nil {
t.Fatal(err)
}
}
// Delete hardlinks via mnt2
for i := 1; i < 20; i++ {
linki := fmt.Sprintf(tc.mnt2+"/link%d", i)
if err := unix.Unlink(linki); err != nil {
t.Fatal(err)
}
}
// Open link0 via mnt1
fd, err := unix.Open(link0, unix.O_RDONLY, 0)
if err != nil {
// Must work with -sharedstorage
if flagSharestorage {
t.Fatal(err)
} else {
// Must always work after cache timeout
time.Sleep(waitForExpire)
fd, err = unix.Open(link0, unix.O_RDONLY, 0)
if err != nil {
t.Fatal(err)
}
}
}
unix.Close(fd)
}
|
