NLM add helper functions to send async calls for the NLM functions

diff --git a/include/libnfs-raw.h b/include/libnfs-raw.h
index c78bef730d332bc8cc72257b71ca1e39dc02edf8..63673205845386ec1ce35b8b623175bb543f6f88 100644 (file)
--- a/include/libnfs-raw.h
+++ b/include/libnfs-raw.h
@@ -860,3 +860,59 @@ int rpc_nlm4_null_async(struct rpc_context *rpc, rpc_cb cb, void *private_data);
 struct NLM4_TESTargs;
 int rpc_nlm4_test_async(struct rpc_context *rpc, rpc_cb cb, struct NLM4_TESTargs *args, void *private_data);
 
+/*
+ * Call NLM/LOCK
+ * Call the LOCK procedure for the NLM protocol
+ *
+ * Function returns
+ *  0 : The call was initiated. The callback will be invoked when the call completes.
+ * <0 : An error occured when trying to set up the call. The callback will not be invoked.
+ *
+ * When the callback is invoked, status indicates the result:
+ * RPC_STATUS_SUCCESS : We got a successful response from the nlm daemon.
+ *                      data is NLM4_LOCKres
+ * RPC_STATUS_ERROR   : An error occured when trying to contact the nlm daemon.
+ *                      data is the error string.
+ * RPC_STATUS_CANCEL : The connection attempt was aborted before it could complete.
+ *                     data is NULL.
+ */
+struct NLM4_LOCKargs;
+int rpc_nlm4_lock_async(struct rpc_context *rpc, rpc_cb cb, struct NLM4_LOCKargs *args, void *private_data);
+
+/*
+ * Call NLM/CANCEL
+ * Call the CANCEL procedure for the NLM protocol
+ *
+ * Function returns
+ *  0 : The call was initiated. The callback will be invoked when the call completes.
+ * <0 : An error occured when trying to set up the call. The callback will not be invoked.
+ *
+ * When the callback is invoked, status indicates the result:
+ * RPC_STATUS_SUCCESS : We got a successful response from the nlm daemon.
+ *                      data is NLM4_CANCres
+ * RPC_STATUS_ERROR   : An error occured when trying to contact the nlm daemon.
+ *                      data is the error string.
+ * RPC_STATUS_CANCEL : The connection attempt was aborted before it could complete.
+ *                     data is NULL.
+ */
+struct NLM4_CANCargs;
+int rpc_nlm4_cancel_async(struct rpc_context *rpc, rpc_cb cb, struct NLM4_CANCargs *args, void *private_data);
+
+/*
+ * Call NLM/UNLOCK
+ * Call the UNLOCK procedure for the NLM protocol
+ *
+ * Function returns
+ *  0 : The call was initiated. The callback will be invoked when the call completes.
+ * <0 : An error occured when trying to set up the call. The callback will not be invoked.
+ *
+ * When the callback is invoked, status indicates the result:
+ * RPC_STATUS_SUCCESS : We got a successful response from the nlm daemon.
+ *                      data is NLM4_UNLOCKres
+ * RPC_STATUS_ERROR   : An error occured when trying to contact the nlm daemon.
+ *                      data is the error string.
+ * RPC_STATUS_CANCEL : The connection attempt was aborted before it could complete.
+ *                     data is NULL.
+ */
+struct NLM4_UNLOCKargs;
+int rpc_nlm4_unlock_async(struct rpc_context *rpc, rpc_cb cb, struct NLM4_UNLOCKargs *args, void *private_data);

diff --git a/nlm/nlm.c b/nlm/nlm.c
index 4d0bee7f5e1c6d542d6a3a38ad730b70f443f5ac..b8f5b312f5ef343555e9fa754beed0f9085efdab 100644 (file)
--- a/nlm/nlm.c
+++ b/nlm/nlm.c
@@ -72,6 +72,81 @@ int rpc_nlm4_test_async(struct rpc_context *rpc, rpc_cb cb, struct NLM4_TESTargs
        return 0;
 }
 
+int rpc_nlm4_lock_async(struct rpc_context *rpc, rpc_cb cb, struct NLM4_LOCKargs *args, void *private_data)
+{
+       struct rpc_pdu *pdu;
+
+       pdu = rpc_allocate_pdu(rpc, NLM_PROGRAM, NLM_V4, NLM4_LOCK, cb, private_data, (xdrproc_t)xdr_NLM4_LOCKres, sizeof(NLM4_LOCKres));
+       if (pdu == NULL) {
+               rpc_set_error(rpc, "Out of memory. Failed to allocate pdu for nlm/lock call");
+               return -1;
+       }
+
+       if (xdr_NLM4_LOCKargs(&pdu->xdr, args) == 0) {
+               rpc_set_error(rpc, "XDR error: Failed to encode NLM4_LOCKargs");
+               rpc_free_pdu(rpc, pdu);
+               return -2;
+       }
+
+       if (rpc_queue_pdu(rpc, pdu) != 0) {
+               rpc_set_error(rpc, "Out of memory. Failed to queue pdu for nlm/lock call");
+               rpc_free_pdu(rpc, pdu);
+               return -1;
+       }
+
+       return 0;
+}
+
+int rpc_nlm4_cancel_async(struct rpc_context *rpc, rpc_cb cb, struct NLM4_CANCargs *args, void *private_data)
+{
+       struct rpc_pdu *pdu;
+
+       pdu = rpc_allocate_pdu(rpc, NLM_PROGRAM, NLM_V4, NLM4_CANCEL, cb, private_data, (xdrproc_t)xdr_NLM4_CANCres, sizeof(NLM4_CANCres));
+       if (pdu == NULL) {
+               rpc_set_error(rpc, "Out of memory. Failed to allocate pdu for nlm/cancel call");
+               return -1;
+       }
+
+       if (xdr_NLM4_CANCargs(&pdu->xdr, args) == 0) {
+               rpc_set_error(rpc, "XDR error: Failed to encode NLM4_CANCargs");
+               rpc_free_pdu(rpc, pdu);
+               return -2;
+       }
+
+       if (rpc_queue_pdu(rpc, pdu) != 0) {
+               rpc_set_error(rpc, "Out of memory. Failed to queue pdu for nlm/cancel call");
+               rpc_free_pdu(rpc, pdu);
+               return -1;
+       }
+
+       return 0;
+}
+
+int rpc_nlm4_unlock_async(struct rpc_context *rpc, rpc_cb cb, struct NLM4_UNLOCKargs *args, void *private_data)
+{
+       struct rpc_pdu *pdu;
+
+       pdu = rpc_allocate_pdu(rpc, NLM_PROGRAM, NLM_V4, NLM4_UNLOCK, cb, private_data, (xdrproc_t)xdr_NLM4_UNLOCKres, sizeof(NLM4_UNLOCKres));
+       if (pdu == NULL) {
+               rpc_set_error(rpc, "Out of memory. Failed to allocate pdu for nlm/unlock call");
+               return -1;
+       }
+
+       if (xdr_NLM4_UNLOCKargs(&pdu->xdr, args) == 0) {
+               rpc_set_error(rpc, "XDR error: Failed to encode NLM4_UNLOCKargs");
+               rpc_free_pdu(rpc, pdu);
+               return -2;
+       }
+
+       if (rpc_queue_pdu(rpc, pdu) != 0) {
+               rpc_set_error(rpc, "Out of memory. Failed to queue pdu for nlm/unlock call");
+               rpc_free_pdu(rpc, pdu);
+               return -1;
+       }
+
+       return 0;
+}
+
 char *nlmstat4_to_str(int st)
 {
        enum nlmstat4 stat = st;