r23577: Fix winbindd (sorry). Ensure I set the new child_pid
[sfrench/samba-autobuild/.git] / source / nsswitch / winbindd_dual.c
index 32d85688b67fe84fc242086ae95127c3b1fe62d4..255577c58cfc62023317ef0cead6886b1776b1af 100644 (file)
@@ -34,6 +34,8 @@
 #undef DBGC_CLASS
 #define DBGC_CLASS DBGC_WINBIND
 
+extern BOOL override_logfile;
+
 /* Read some data from a client connection */
 
 static void child_read_request(struct winbindd_cli_state *state)
@@ -46,7 +48,7 @@ static void child_read_request(struct winbindd_cli_state *state)
                        sizeof(state->request));
 
        if (len != sizeof(state->request)) {
-               DEBUG(0, ("Got invalid request length: %d\n", (int)len));
+               DEBUG(len > 0 ? 0 : 3, ("Got invalid request length: %d\n", (int)len));
                state->finished = True;
                return;
        }
@@ -94,6 +96,9 @@ struct winbindd_async_request {
        struct winbindd_request *request;
        struct winbindd_response *response;
        void (*continuation)(void *private_data, BOOL success);
+       struct timed_event *reply_timeout_event;
+       pid_t child_pid; /* pid of the child we're waiting on. Used to detect
+                           a restart of the child (child->pid != child_pid). */
        void *private_data;
 };
 
@@ -108,7 +113,7 @@ void async_request(TALLOC_CTX *mem_ctx, struct winbindd_child *child,
                   void (*continuation)(void *private_data, BOOL success),
                   void *private_data)
 {
-       struct winbindd_async_request *state, *tmp;
+       struct winbindd_async_request *state;
 
        SMB_ASSERT(continuation != NULL);
 
@@ -127,7 +132,7 @@ void async_request(TALLOC_CTX *mem_ctx, struct winbindd_child *child,
        state->continuation = continuation;
        state->private_data = private_data;
 
-       DLIST_ADD_END(child->requests, state, tmp);
+       DLIST_ADD_END(child->requests, state, struct winbindd_async_request *);
 
        schedule_async_request(child);
 
@@ -158,17 +163,64 @@ static void async_main_request_sent(void *private_data, BOOL success)
                          async_request_sent, state);
 }
 
+/****************************************************************
+ Handler triggered if the child winbindd doesn't respond within
+ a given timeout.
+****************************************************************/
+
+static void async_request_timeout_handler(struct event_context *ctx,
+                                       struct timed_event *te,
+                                       const struct timeval *now,
+                                       void *private_data)
+{
+       struct winbindd_async_request *state =
+               talloc_get_type_abort(private_data, struct winbindd_async_request);
+
+       DEBUG(0,("async_request_timeout_handler: child pid %u is not responding. "
+               "Closing connection to it.\n",
+               state->child_pid ));
+
+       /* Deal with the reply - set to error. */
+       async_reply_recv(private_data, False);
+}
+
+/**************************************************************
+ Common function called on both async send and recv fail.
+ Cleans up the child and schedules the next request.
+**************************************************************/
+
+static void async_request_fail(struct winbindd_async_request *state)
+{
+       DLIST_REMOVE(state->child->requests, state);
+
+       TALLOC_FREE(state->reply_timeout_event);
+
+       SMB_ASSERT(state->child_pid != (pid_t)0);
+
+       /* If not already reaped, send kill signal to child. */
+       if (state->child->pid == state->child_pid) {
+               kill(state->child_pid, SIGTERM);
+
+               /* 
+                * Close the socket to the child.
+                */
+               winbind_child_died(state->child_pid);
+       }
+
+       state->response->length = sizeof(struct winbindd_response);
+       state->response->result = WINBINDD_ERROR;
+       state->continuation(state->private_data, False);
+}
+
 static void async_request_sent(void *private_data_data, BOOL success)
 {
        struct winbindd_async_request *state =
                talloc_get_type_abort(private_data_data, struct winbindd_async_request);
 
        if (!success) {
-               DEBUG(5, ("Could not send async request\n"));
-
-               state->response->length = sizeof(struct winbindd_response);
-               state->response->result = WINBINDD_ERROR;
-               state->continuation(state->private_data, False);
+               DEBUG(5, ("Could not send async request to child pid %u\n",
+                       (unsigned int)state->child_pid ));
+               async_request_fail(state);
                return;
        }
 
@@ -178,6 +230,22 @@ static void async_request_sent(void *private_data_data, BOOL success)
                         &state->response->result,
                         sizeof(state->response->result),
                         async_reply_recv, state);
+
+       /* 
+        * Set up a timeout of 300 seconds for the response.
+        * If we don't get it close the child socket and
+        * report failure.
+        */
+
+       state->reply_timeout_event = event_add_timed(winbind_event_context(),
+                                                       NULL,
+                                                       timeval_current_ofs(300,0),
+                                                       "async_request_timeout",
+                                                       async_request_timeout_handler,
+                                                       state);
+       if (!state->reply_timeout_event) {
+               smb_panic("async_request_sent: failed to add timeout handler.\n");
+       }
 }
 
 static void async_reply_recv(void *private_data, BOOL success)
@@ -186,18 +254,23 @@ static void async_reply_recv(void *private_data, BOOL success)
                talloc_get_type_abort(private_data, struct winbindd_async_request);
        struct winbindd_child *child = state->child;
 
+       TALLOC_FREE(state->reply_timeout_event);
+
        state->response->length = sizeof(struct winbindd_response);
 
        if (!success) {
-               DEBUG(5, ("Could not receive async reply\n"));
-               state->response->result = WINBINDD_ERROR;
+               DEBUG(5, ("Could not receive async reply from child pid %u\n",
+                       (unsigned int)state->child_pid ));
+
+               cache_cleanup_response(state->child_pid);
+               async_request_fail(state);
                return;
        }
 
-       SMB_ASSERT(cache_retrieve_response(child->pid,
+       SMB_ASSERT(cache_retrieve_response(state->child_pid,
                                           state->response));
 
-       cache_cleanup_response(child->pid);
+       cache_cleanup_response(state->child_pid);
        
        DLIST_REMOVE(child->requests, state);
 
@@ -232,11 +305,13 @@ static void schedule_async_request(struct winbindd_child *child)
                return;
        }
 
+       /* Now we know who we're sending to - remember the pid. */
+       request->child_pid = child->pid;
+
        setup_async_write(&child->event, request->request,
                          sizeof(*request->request),
                          async_main_request_sent, request);
 
-       talloc_destroy(child->mem_ctx);
        return;
 }
 
@@ -354,21 +429,28 @@ static struct winbindd_child_dispatch_table child_dispatch_table[] = {
        { WINBINDD_PAM_AUTH_CRAP,        winbindd_dual_pam_auth_crap,         "AUTH_CRAP" },
        { WINBINDD_PAM_LOGOFF,           winbindd_dual_pam_logoff,            "PAM_LOGOFF" },
        { WINBINDD_PAM_CHNG_PSWD_AUTH_CRAP,winbindd_dual_pam_chng_pswd_auth_crap,"CHNG_PSWD_AUTH_CRAP" },
+       { WINBINDD_PAM_CHAUTHTOK,        winbindd_dual_pam_chauthtok,         "PAM_CHAUTHTOK" },
        { WINBINDD_CHECK_MACHACC,        winbindd_dual_check_machine_acct,    "CHECK_MACHACC" },
        { WINBINDD_DUAL_SID2UID,         winbindd_dual_sid2uid,               "DUAL_SID2UID" },
        { WINBINDD_DUAL_SID2GID,         winbindd_dual_sid2gid,               "DUAL_SID2GID" },
+#if 0   /* DISABLED until we fix the interface in Samba 3.0.26 --jerry */
+       { WINBINDD_DUAL_SIDS2XIDS,       winbindd_dual_sids2xids,             "DUAL_SIDS2XIDS" },
+#endif  /* end DISABLED */
        { WINBINDD_DUAL_UID2SID,         winbindd_dual_uid2sid,               "DUAL_UID2SID" },
        { WINBINDD_DUAL_GID2SID,         winbindd_dual_gid2sid,               "DUAL_GID2SID" },
        { WINBINDD_DUAL_UID2NAME,        winbindd_dual_uid2name,              "DUAL_UID2NAME" },
        { WINBINDD_DUAL_NAME2UID,        winbindd_dual_name2uid,              "DUAL_NAME2UID" },
        { WINBINDD_DUAL_GID2NAME,        winbindd_dual_gid2name,              "DUAL_GID2NAME" },
        { WINBINDD_DUAL_NAME2GID,        winbindd_dual_name2gid,              "DUAL_NAME2GID" },
-       { WINBINDD_DUAL_IDMAPSET,        winbindd_dual_idmapset,              "DUAL_IDMAPSET" },
+       { WINBINDD_DUAL_SET_MAPPING,     winbindd_dual_set_mapping,           "DUAL_SET_MAPPING" },
+       { WINBINDD_DUAL_SET_HWM,         winbindd_dual_set_hwm,               "DUAL_SET_HWMS" },
+       { WINBINDD_DUAL_DUMP_MAPS,       winbindd_dual_dump_maps,             "DUAL_DUMP_MAPS" },
        { WINBINDD_DUAL_USERINFO,        winbindd_dual_userinfo,              "DUAL_USERINFO" },
        { WINBINDD_ALLOCATE_UID,         winbindd_dual_allocate_uid,          "ALLOCATE_UID" },
        { WINBINDD_ALLOCATE_GID,         winbindd_dual_allocate_gid,          "ALLOCATE_GID" },
        { WINBINDD_GETUSERDOMGROUPS,     winbindd_dual_getuserdomgroups,      "GETUSERDOMGROUPS" },
        { WINBINDD_DUAL_GETSIDALIASES,   winbindd_dual_getsidaliases,         "GETSIDALIASES" },
+       { WINBINDD_CCACHE_NTLMAUTH,      winbindd_dual_ccache_ntlm_auth,      "CCACHE_NTLM_AUTH" },
        /* End of list */
 
        { WINBINDD_NUM_CMDS, NULL, "NONE" }
@@ -440,7 +522,7 @@ void winbind_child_died(pid_t pid)
        }
 
        if (child == NULL) {
-               DEBUG(0, ("Unknown child %d died!\n", pid));
+               DEBUG(5, ("Already reaped child %u died\n", (unsigned int)pid));
                return;
        }
 
@@ -453,10 +535,26 @@ void winbind_child_died(pid_t pid)
        schedule_async_request(child);
 }
 
-/* Forward the online/offline messages to our children. */
-void winbind_msg_offline(int msg_type, struct process_id src, void *buf, size_t len)
+/* Ensure any negative cache entries with the netbios or realm names are removed. */
+
+void winbindd_flush_negative_conn_cache(struct winbindd_domain *domain)
+{
+       flush_negative_conn_cache_for_domain(domain->name);
+       if (*domain->alt_name) {
+               flush_negative_conn_cache_for_domain(domain->alt_name);
+       }
+}
+
+/* Set our domains as offline and forward the offline message to our children. */
+
+void winbind_msg_offline(struct messaging_context *msg_ctx,
+                        void *private_data,
+                        uint32_t msg_type,
+                        struct server_id server_id,
+                        DATA_BLOB *data)
 {
        struct winbindd_child *child;
+       struct winbindd_domain *domain;
 
        DEBUG(10,("winbind_msg_offline: got offline message.\n"));
 
@@ -471,17 +569,50 @@ void winbind_msg_offline(int msg_type, struct process_id src, void *buf, size_t
                return;
        }
 
+       /* Set all our domains as offline. */
+       for (domain = domain_list(); domain; domain = domain->next) {
+               if (domain->internal) {
+                       continue;
+               }
+               DEBUG(5,("winbind_msg_offline: marking %s offline.\n", domain->name));
+               set_domain_offline(domain);
+       }
+
        for (child = children; child != NULL; child = child->next) {
-               DEBUG(10,("winbind_msg_offline: sending message to pid %u.\n",
-                       (unsigned int)child->pid ));
-               message_send_pid(pid_to_procid(child->pid), MSG_WINBIND_OFFLINE, NULL, 0, False);
+               /* Don't send message to idmap child.  We've already
+                  done so above. */
+               if (!child->domain || (child == idmap_child())) {
+                       continue;
+               }
+
+               /* Or internal domains (this should not be possible....) */
+               if (child->domain->internal) {
+                       continue;
+               }
+
+               /* Each winbindd child should only process requests for one domain - make sure
+                  we only set it online / offline for that domain. */
+
+               DEBUG(10,("winbind_msg_offline: sending message to pid %u for domain %s.\n",
+                       (unsigned int)child->pid, domain->name ));
+
+               messaging_send_buf(msg_ctx, pid_to_procid(child->pid),
+                                  MSG_WINBIND_OFFLINE,
+                                  (uint8 *)child->domain->name,
+                                  strlen(child->domain->name)+1);
        }
 }
 
-/* Forward the online/offline messages to our children. */
-void winbind_msg_online(int msg_type, struct process_id src, void *buf, size_t len)
+/* Set our domains as online and forward the online message to our children. */
+
+void winbind_msg_online(struct messaging_context *msg_ctx,
+                       void *private_data,
+                       uint32_t msg_type,
+                       struct server_id server_id,
+                       DATA_BLOB *data)
 {
        struct winbindd_child *child;
+       struct winbindd_domain *domain;
 
        DEBUG(10,("winbind_msg_online: got online message.\n"));
 
@@ -493,15 +624,66 @@ void winbind_msg_online(int msg_type, struct process_id src, void *buf, size_t l
        /* Set our global state as online. */
        set_global_winbindd_state_online();
 
+       smb_nscd_flush_user_cache();
+       smb_nscd_flush_group_cache();
+
+       /* Set all our domains as online. */
+       for (domain = domain_list(); domain; domain = domain->next) {
+               if (domain->internal) {
+                       continue;
+               }
+               DEBUG(5,("winbind_msg_online: requesting %s to go online.\n", domain->name));
+
+               winbindd_flush_negative_conn_cache(domain);
+               set_domain_online_request(domain);
+
+               /* Send an online message to the idmap child when our
+                  primary domain comes back online */
+
+               if ( domain->primary ) {
+                       struct winbindd_child *idmap = idmap_child();
+                       
+                       if ( idmap->pid != 0 ) {
+                               messaging_send_buf(msg_ctx,
+                                                  pid_to_procid(idmap->pid), 
+                                                  MSG_WINBIND_ONLINE,
+                                                  (uint8 *)domain->name,
+                                                  strlen(domain->name)+1);
+                       }
+                       
+               }
+       }
+
        for (child = children; child != NULL; child = child->next) {
-               DEBUG(10,("winbind_msg_online: sending message to pid %u.\n",
-                       (unsigned int)child->pid ));
-               message_send_pid(pid_to_procid(child->pid), MSG_WINBIND_ONLINE, NULL, 0, False);
+               /* Don't send message to idmap child. */
+               if (!child->domain || (child == idmap_child())) {
+                       continue;
+               }
+
+               /* Or internal domains (this should not be possible....) */
+               if (child->domain->internal) {
+                       continue;
+               }
+
+               /* Each winbindd child should only process requests for one domain - make sure
+                  we only set it online / offline for that domain. */
+
+               DEBUG(10,("winbind_msg_online: sending message to pid %u for domain %s.\n",
+                       (unsigned int)child->pid, child->domain->name ));
+
+               messaging_send_buf(msg_ctx, pid_to_procid(child->pid),
+                                  MSG_WINBIND_ONLINE,
+                                  (uint8 *)child->domain->name,
+                                  strlen(child->domain->name)+1);
        }
 }
 
 /* Forward the online/offline messages to our children. */
-void winbind_msg_onlinestatus(int msg_type, struct process_id src, void *buf, size_t len)
+void winbind_msg_onlinestatus(struct messaging_context *msg_ctx,
+                             void *private_data,
+                             uint32_t msg_type,
+                             struct server_id server_id,
+                             DATA_BLOB *data)
 {
        struct winbindd_child *child;
 
@@ -512,40 +694,80 @@ void winbind_msg_onlinestatus(int msg_type, struct process_id src, void *buf, si
                        DEBUG(10,("winbind_msg_onlinestatus: "
                                  "sending message to pid %u of primary domain.\n",
                                  (unsigned int)child->pid));
-                       message_send_pid(pid_to_procid(child->pid), 
-                                        MSG_WINBIND_ONLINESTATUS, buf, len, False);
+                       messaging_send_buf(msg_ctx, pid_to_procid(child->pid), 
+                                          MSG_WINBIND_ONLINESTATUS,
+                                          (uint8 *)data->data,
+                                          data->length);
                        break;
                }
        }
 }
 
+void winbind_msg_dump_event_list(struct messaging_context *msg_ctx,
+                                void *private_data,
+                                uint32_t msg_type,
+                                struct server_id server_id,
+                                DATA_BLOB *data)
+{
+       struct winbindd_child *child;
+
+       DEBUG(10,("winbind_msg_dump_event_list received\n"));
+
+       dump_event_list(winbind_event_context());
+
+       for (child = children; child != NULL; child = child->next) {
+
+               DEBUG(10,("winbind_msg_dump_event_list: sending message to pid %u\n",
+                       (unsigned int)child->pid));
+
+               messaging_send_buf(msg_ctx, pid_to_procid(child->pid),
+                                  MSG_DUMP_EVENT_LIST,
+                                  NULL, 0);
+       }
+
+}
 
-static void account_lockout_policy_handler(struct timed_event *te,
+static void account_lockout_policy_handler(struct event_context *ctx,
+                                          struct timed_event *te,
                                           const struct timeval *now,
                                           void *private_data)
 {
        struct winbindd_child *child =
                (struct winbindd_child *)private_data;
-
+       TALLOC_CTX *mem_ctx = NULL;
        struct winbindd_methods *methods;
        SAM_UNK_INFO_12 lockout_policy;
        NTSTATUS result;
 
        DEBUG(10,("account_lockout_policy_handler called\n"));
 
-       if (child->lockout_policy_event) {
-               TALLOC_FREE(child->lockout_policy_event);
+       TALLOC_FREE(child->lockout_policy_event);
+
+       if ( !winbindd_can_contact_domain( child->domain ) ) {
+               DEBUG(10,("account_lockout_policy_handler: Removing myself since I "
+                         "do not have an incoming trust to domain %s\n", 
+                         child->domain->name));
+
+               return;         
        }
 
        methods = child->domain->methods;
 
-       result = methods->lockout_policy(child->domain, child->mem_ctx, &lockout_policy);
+       mem_ctx = talloc_init("account_lockout_policy_handler ctx");
+       if (!mem_ctx) {
+               result = NT_STATUS_NO_MEMORY;
+       } else {
+               result = methods->lockout_policy(child->domain, mem_ctx, &lockout_policy);
+       }
+
+       talloc_destroy(mem_ctx);
+
        if (!NT_STATUS_IS_OK(result)) {
-               DEBUG(10,("account_lockout_policy_handler: failed to call lockout_policy\n"));
-               return;
+               DEBUG(10,("account_lockout_policy_handler: lockout_policy failed error %s\n",
+                        nt_errstr(result)));
        }
 
-       child->lockout_policy_event = add_timed_event(child->mem_ctx, 
+       child->lockout_policy_event = event_add_timed(winbind_event_context(), NULL,
                                                      timeval_current_ofs(3600, 0),
                                                      "account_lockout_policy_handler",
                                                      account_lockout_policy_handler,
@@ -554,38 +776,55 @@ static void account_lockout_policy_handler(struct timed_event *te,
 
 /* Deal with a request to go offline. */
 
-static void child_msg_offline(int msg_type, struct process_id src, void *buf, size_t len)
+static void child_msg_offline(struct messaging_context *msg,
+                             void *private_data,
+                             uint32_t msg_type,
+                             struct server_id server_id,
+                             DATA_BLOB *data)
 {
        struct winbindd_domain *domain;
+       const char *domainname = (const char *)data->data;
 
-       DEBUG(5,("child_msg_offline received.\n"));
-
-       if (!lp_winbind_offline_logon()) {
-               DEBUG(10,("child_msg_offline: rejecting offline message.\n"));
+       if (data->data == NULL || data->length == 0) {
                return;
        }
 
-       /* Set our global state as offline. */
-       if (!set_global_winbindd_state_offline()) {
-               DEBUG(10,("child_msg_offline: offline request failed.\n"));
+       DEBUG(5,("child_msg_offline received for domain %s.\n", domainname));
+
+       if (!lp_winbind_offline_logon()) {
+               DEBUG(10,("child_msg_offline: rejecting offline message.\n"));
                return;
        }
 
-       /* Mark all our domains as offline. */
+       /* Mark the requested domain offline. */
 
        for (domain = domain_list(); domain; domain = domain->next) {
-               DEBUG(5,("child_msg_offline: marking %s offline.\n", domain->name));
-               domain->online = False;
+               if (domain->internal) {
+                       continue;
+               }
+               if (strequal(domain->name, domainname)) {
+                       DEBUG(5,("child_msg_offline: marking %s offline.\n", domain->name));
+                       set_domain_offline(domain);
+               }
        }
 }
 
 /* Deal with a request to go online. */
 
-static void child_msg_online(int msg_type, struct process_id src, void *buf, size_t len)
+static void child_msg_online(struct messaging_context *msg,
+                            void *private_data,
+                            uint32_t msg_type,
+                            struct server_id server_id,
+                            DATA_BLOB *data)
 {
        struct winbindd_domain *domain;
+       const char *domainname = (const char *)data->data;
 
-       DEBUG(5,("child_msg_online received.\n"));
+       if (data->data == NULL || data->length == 0) {
+               return;
+       }
+
+       DEBUG(5,("child_msg_online received for domain %s.\n", domainname));
 
        if (!lp_winbind_offline_logon()) {
                DEBUG(10,("child_msg_online: rejecting online message.\n"));
@@ -595,15 +834,18 @@ static void child_msg_online(int msg_type, struct process_id src, void *buf, siz
        /* Set our global state as online. */
        set_global_winbindd_state_online();
 
-       winbindd_flush_nscd_cache();
-
-       /* Mark everything online - delete any negative cache entries
-          to force an immediate reconnect. */
+       /* Try and mark everything online - delete any negative cache entries
+          to force a reconnect now. */
 
        for (domain = domain_list(); domain; domain = domain->next) {
-               DEBUG(5,("child_msg_online: marking %s online.\n", domain->name));
-               domain->online = True;
-               check_negative_conn_cache_timeout(domain->name, domain->dcname, 0);
+               if (domain->internal) {
+                       continue;
+               }
+               if (strequal(domain->name, domainname)) {
+                       DEBUG(5,("child_msg_online: requesting %s to go online.\n", domain->name));
+                       winbindd_flush_negative_conn_cache(domain);
+                       set_domain_online_request(domain);
+               }
        }
 }
 
@@ -613,7 +855,7 @@ static const char *collect_onlinestatus(TALLOC_CTX *mem_ctx)
        char *buf = NULL;
 
        if ((buf = talloc_asprintf(mem_ctx, "global:%s ", 
-                                  get_global_winbindd_state_online() ? 
+                                  get_global_winbindd_state_offline() ? 
                                   "Offline":"Online")) == NULL) {
                return NULL;
        }
@@ -634,19 +876,23 @@ static const char *collect_onlinestatus(TALLOC_CTX *mem_ctx)
        return buf;
 }
 
-static void child_msg_onlinestatus(int msg_type, struct process_id src, void *buf, size_t len)
+static void child_msg_onlinestatus(struct messaging_context *msg_ctx,
+                                  void *private_data,
+                                  uint32_t msg_type,
+                                  struct server_id server_id,
+                                  DATA_BLOB *data)
 {
        TALLOC_CTX *mem_ctx;
        const char *message;
-       struct process_id *sender;
+       struct server_id *sender;
        
        DEBUG(5,("winbind_msg_onlinestatus received.\n"));
 
-       if (!buf) {
+       if (!data->data) {
                return;
        }
 
-       sender = (struct process_id *)buf;
+       sender = (struct server_id *)data->data;
 
        mem_ctx = talloc_init("winbind_msg_onlinestatus");
        if (mem_ctx == NULL) {
@@ -659,17 +905,29 @@ static void child_msg_onlinestatus(int msg_type, struct process_id src, void *bu
                return;
        }
 
-       message_send_pid(*sender, MSG_WINBIND_ONLINESTATUS, 
-                        message, strlen(message) + 1, True);
+       messaging_send_buf(msg_ctx, *sender, MSG_WINBIND_ONLINESTATUS, 
+                          (uint8 *)message, strlen(message) + 1);
 
        talloc_destroy(mem_ctx);
 }
 
+static void child_msg_dump_event_list(struct messaging_context *msg,
+                                     void *private_data,
+                                     uint32_t msg_type,
+                                     struct server_id server_id,
+                                     DATA_BLOB *data)
+{
+       DEBUG(5,("child_msg_dump_event_list received\n"));
+
+       dump_event_list(winbind_event_context());
+}
+
+
 static BOOL fork_domain_child(struct winbindd_child *child)
 {
        int fdpair[2];
        struct winbindd_cli_state state;
-       extern BOOL override_logfile;
+       struct winbindd_domain *domain;
 
        if (socketpair(AF_UNIX, SOCK_STREAM, 0, fdpair) != 0) {
                DEBUG(0, ("Could not open child pipe: %s\n",
@@ -678,17 +936,15 @@ static BOOL fork_domain_child(struct winbindd_child *child)
        }
 
        ZERO_STRUCT(state);
-       state.pid = getpid();
+       state.pid = sys_getpid();
 
-       /* Ensure we don't process messages whilst we're
-          changing the disposition for the child. */
-       message_block();
+       /* Stop zombies */
+       CatchChild();
 
        child->pid = sys_fork();
 
        if (child->pid == -1) {
                DEBUG(0, ("Could not fork: %s\n", strerror(errno)));
-               message_unblock();
                return False;
        }
 
@@ -701,8 +957,6 @@ static BOOL fork_domain_child(struct winbindd_child *child)
                child->event.flags = 0;
                child->requests = NULL;
                add_fd_event(&child->event);
-               /* We're ok with online/offline messages now. */
-               message_unblock();
                return True;
        }
 
@@ -724,35 +978,70 @@ static BOOL fork_domain_child(struct winbindd_child *child)
                reopen_logs();
        }
 
+       /*
+        * For clustering, we need to re-init our ctdbd connection after the
+        * fork
+        */
+       if (!NT_STATUS_IS_OK(messaging_reinit(winbind_messaging_context())))
+               exit(1);
+
        /* Don't handle the same messages as our parent. */
-       message_deregister(MSG_SMB_CONF_UPDATED);
-       message_deregister(MSG_SHUTDOWN);
-       message_deregister(MSG_WINBIND_OFFLINE);
-       message_deregister(MSG_WINBIND_ONLINE);
-       message_deregister(MSG_WINBIND_ONLINESTATUS);
+       messaging_deregister(winbind_messaging_context(),
+                            MSG_SMB_CONF_UPDATED, NULL);
+       messaging_deregister(winbind_messaging_context(),
+                            MSG_SHUTDOWN, NULL);
+       messaging_deregister(winbind_messaging_context(),
+                            MSG_WINBIND_OFFLINE, NULL);
+       messaging_deregister(winbind_messaging_context(),
+                            MSG_WINBIND_ONLINE, NULL);
+       messaging_deregister(winbind_messaging_context(),
+                            MSG_WINBIND_ONLINESTATUS, NULL);
+       messaging_deregister(winbind_messaging_context(),
+                            MSG_DUMP_EVENT_LIST, NULL);
+
+       /* Handle online/offline messages. */
+       messaging_register(winbind_messaging_context(), NULL,
+                          MSG_WINBIND_OFFLINE, child_msg_offline);
+       messaging_register(winbind_messaging_context(), NULL,
+                          MSG_WINBIND_ONLINE, child_msg_online);
+       messaging_register(winbind_messaging_context(), NULL,
+                          MSG_WINBIND_ONLINESTATUS, child_msg_onlinestatus);
+       messaging_register(winbind_messaging_context(), NULL,
+                          MSG_DUMP_EVENT_LIST, child_msg_dump_event_list);
+
+       if ( child->domain ) {
+               child->domain->startup = True;
+               child->domain->startup_time = time(NULL);
+       }
 
-       /* The child is ok with online/offline messages now. */
-       message_unblock();
+       /* Ensure we have no pending check_online events other
+          than one for this domain. */
 
-       child->mem_ctx = talloc_init("child_mem_ctx");
-       if (child->mem_ctx == NULL) {
-               return False;
+       for (domain = domain_list(); domain; domain = domain->next) {
+               if (domain != child->domain) {
+                       TALLOC_FREE(domain->check_online_event);
+               }
        }
 
-       if (child->domain != NULL && lp_winbind_offline_logon()) {
-               /* We might be in the idmap child...*/
-               child->lockout_policy_event = add_timed_event(
-                       child->mem_ctx, timeval_zero(),
+       /* Ensure we're not handling an event inherited from
+          our parent. */
+
+       cancel_named_event(winbind_event_context(),
+                          "krb5_ticket_refresh_handler");
+
+       /* We might be in the idmap child...*/
+       if (child->domain && !(child->domain->internal) &&
+           lp_winbind_offline_logon()) {
+
+               set_domain_online_request(child->domain);
+
+               child->lockout_policy_event = event_add_timed(
+                       winbind_event_context(), NULL, timeval_zero(),
                        "account_lockout_policy_handler",
                        account_lockout_policy_handler,
                        child);
        }
 
-       /* Handle online/offline messages. */
-       message_register(MSG_WINBIND_OFFLINE,child_msg_offline);
-       message_register(MSG_WINBIND_ONLINE,child_msg_online);
-       message_register(MSG_WINBIND_ONLINESTATUS,child_msg_onlinestatus);
-
        while (1) {
 
                int ret;
@@ -765,11 +1054,19 @@ static BOOL fork_domain_child(struct winbindd_child *child)
                lp_TALLOC_FREE();
                main_loop_TALLOC_FREE();
 
-               run_events();
+               run_events(winbind_event_context(), 0, NULL, NULL);
 
                GetTimeOfDay(&now);
 
-               tp = get_timed_events_timeout(&t);
+               if (child->domain && child->domain->startup &&
+                               (now.tv_sec > child->domain->startup_time + 30)) {
+                       /* No longer in "startup" mode. */
+                       DEBUG(10,("fork_domain_child: domain %s no longer in 'startup' mode.\n",
+                               child->domain->name ));
+                       child->domain->startup = False;
+               }
+
+               tp = get_timed_events_timeout(winbind_event_context(), &t);
                if (tp) {
                        DEBUG(11,("select will use timeout of %u.%u seconds\n",
                                (unsigned int)tp->tv_sec, (unsigned int)tp->tv_usec ));
@@ -777,7 +1074,7 @@ static BOOL fork_domain_child(struct winbindd_child *child)
 
                /* Handle messages */
 
-               message_dispatch();
+               message_dispatch(winbind_messaging_context());
 
                FD_ZERO(&read_fds);
                FD_SET(state.sock, &read_fds);