[PATCH pynfs v3 18/26] server41tests: test DELEGRETURN stops notifications

Get a dir delegation with ADD_ENTRY notifications, immediately
return it with DELEGRETURN, then create a file from a second
client. Verify no callbacks are received after the delegation
was returned.

Signed-off-by: Jeff Layton <[email protected]>
---
 nfs4.1/server41tests/st_dir_deleg.py | 42 ++++++++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)

diff --git a/nfs4.1/server41tests/st_dir_deleg.py b/nfs4.1/server41tests/st_dir_deleg.py
index ec4e2bc0e961..c4778da61dcd 100644
--- a/nfs4.1/server41tests/st_dir_deleg.py
+++ b/nfs4.1/server41tests/st_dir_deleg.py
@@ -645,3 +645,45 @@ def testDirDelegMkdir(t, env):
         fail("Expected ADD notification, got %d" % evt_type)
     if evt.nad_new_entry.ne_file != env.testname(t):
         fail("Wrong directory name in ADD notification")
+
+def testDirDelegReturnStopsNotify(t, env):
+    """Verify DELEGRETURN stops notifications
+
+    FLAGS: dirdeleg all
+    CODE: DIRDELEG15
+    """
+    c = env.c1
+    cb = threading.Event()
+    sess1, fh, deleg = _getDirDeleg(t, env,
+                                     [NOTIFY4_ADD_ENTRY,
+                                      NOTIFY4_GFLAG_EXTEND], cb)
+
+    # Immediately return the delegation
+    ops = [ op.putfh(fh), op.delegreturn(deleg) ]
+    res = sess1.compound(ops)
+    check(res)
+
+    # Now create a file from a second client
+    sess2 = c.new_client_session(b"%s_2" % env.testname(t))
+    claim = open_claim4(CLAIM_NULL, env.testname(t))
+    owner = open_owner4(0, b"owner")
+    how = openflag4(OPEN4_CREATE, createhow4(GUARDED4, {FATTR4_SIZE:0}))
+    open_op = [ op.putfh(fh), op.open(0,
+                                      OPEN4_SHARE_ACCESS_WRITE | OPEN4_SHARE_ACCESS_WANT_NO_DELEG,
+                                      OPEN4_SHARE_DENY_NONE, owner, how, claim), op.getfh() ]
+    res = sess2.compound(open_op)
+    check(res)
+    open_stateid = res.resarray[-2].stateid
+    file_fh = res.resarray[-1].object
+
+    # Wait briefly -- should NOT get any callback
+    completed = cb.wait(2)
+
+    close_file(sess2, file_fh, stateid=open_stateid)
+
+    remove_op = [ op.putfh(fh), op.remove(env.testname(t)) ]
+    res = sess2.compound(remove_op)
+    check(res)
+
+    if cb.got_notify or cb.got_recall:
+        fail("Received callback after DELEGRETURN")

-- 
2.54.0