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-rw-r--r--tests/defaults/diriv_test.go73
1 files changed, 73 insertions, 0 deletions
diff --git a/tests/defaults/diriv_test.go b/tests/defaults/diriv_test.go
new file mode 100644
index 0000000..75f1511
--- /dev/null
+++ b/tests/defaults/diriv_test.go
@@ -0,0 +1,73 @@
+package defaults
+
+import (
+ "io/ioutil"
+ "os"
+ "sync"
+ "syscall"
+ "testing"
+ "time"
+
+ "github.com/rfjakob/gocryptfs/tests/test_helpers"
+)
+
+func TestDirIVRace(t *testing.T) {
+ // Create "dir1" with one file in it
+ dir1 := test_helpers.DefaultPlainDir + "/TestDirIVRace_Dir1"
+ err := os.Mkdir(dir1, 0700)
+ if err != nil {
+ t.Fatal(err)
+ }
+ err = ioutil.WriteFile(dir1+"/file", nil, 0600)
+ if err != nil {
+ t.Fatal(err)
+ }
+
+ // Create directory "dir2"
+ dir2 := test_helpers.DefaultPlainDir + "/TestDirIVRace_Dir2"
+ err = os.Mkdir(dir2, 0700)
+ if err != nil {
+ t.Fatal(err)
+ }
+ file2 := dir2 + "/file"
+ err = ioutil.WriteFile(file2, nil, 0600)
+ if err != nil {
+ t.Fatal(err)
+ }
+
+ stop := false
+ defer func() { stop = true }()
+
+ var wg sync.WaitGroup
+ wg.Add(1)
+ go func() {
+ wg.Done()
+ for {
+ // Keep dir2 in the diriv cache
+ fd, err2 := os.Open(file2)
+ if err2 != nil {
+ fd.Close()
+ }
+ if stop {
+ return
+ }
+ }
+ }()
+ wg.Wait()
+ time.Sleep(time.Millisecond)
+
+ // Overwrite dir2 with dir1
+ err = syscall.Unlink(file2)
+ if err != nil {
+ t.Fatal(err)
+ }
+ err = syscall.Rename(dir1, dir2)
+ if err != nil {
+ t.Fatal(err)
+ }
+ // We should be able to stat file2
+ _, err = os.Stat(file2)
+ if err != nil {
+ t.Error(err)
+ }
+}