func (s *fuseTestSuite) TestChmod() {
datasetName := "TestChmod"
str := spec.CreateValueSpecString("ldb", s.LdbDir, datasetName)
var testfs pathfs.FileSystem
start(str, func(fs pathfs.FileSystem) { testfs = fs })
_, code := testfs.Create("passwords.txt", uint32(os.O_CREATE)|uint32(os.O_WRONLY), 0777, nil)
assert.Equal(s.T(), fuse.OK, code)
code = testfs.Chmod("passwords.txt", 0444, nil)
assert.Equal(s.T(), fuse.OK, code)
assertAttr(s, testfs, "passwords.txt", 0444|fuse.S_IFREG, 0)
}