s4: rename source4/smbd/ to source4/samba/

Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>

Autobuild-User(master): Ralph Böhme <slow@samba.org>
Autobuild-Date(master): Fri Nov 27 10:07:18 UTC 2020 on sn-devel-184

1 files changed, 140 insertions, 0 deletions

diff --git a/source4/samba/service_task.c b/source4/samba/service_task.c
new file mode 100644
index 00000000000..d911027db0a
--- /dev/null
+++ b/source4/samba/service_task.c
@@ -0,0 +1,140 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   helper functions for task based servers (nbtd, winbind etc)
+
+   Copyright (C) Andrew Tridgell 2005
+   
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include "process_model.h"
+#include "lib/messaging/irpc.h"
+#include "param/param.h"
+#include "librpc/gen_ndr/ndr_irpc_c.h"
+
+/*
+  terminate a task service
+*/
+void task_server_terminate(struct task_server *task, const char *reason, bool fatal)
+{
+	struct tevent_context *event_ctx = task->event_ctx;
+	const struct model_ops *model_ops = task->model_ops;
+	if (fatal) {
+		DBG_ERR("task_server_terminate: [%s]\n", reason);
+	} else {
+		DBG_NOTICE("task_server_terminate: [%s]\n", reason);
+	}
+
+	if (fatal && task->msg_ctx != NULL) {
+		struct dcerpc_binding_handle *irpc_handle;
+		struct samba_terminate r;
+
+		irpc_handle = irpc_binding_handle_by_name(task, task->msg_ctx,
+							  "samba", &ndr_table_irpc);
+		if (irpc_handle != NULL) {
+			/* Note: this makes use of nested event loops... */
+			dcerpc_binding_handle_set_sync_ev(irpc_handle, event_ctx);
+			r.in.reason = reason;
+			dcerpc_samba_terminate_r(irpc_handle, task, &r);
+		}
+	}
+
+	imessaging_cleanup(task->msg_ctx);
+
+	model_ops->terminate_task(
+	    event_ctx, task->lp_ctx, reason, fatal, task->process_context);
+	/* don't free this above, it might contain the 'reason' being printed */
+	talloc_free(task);
+}
+
+/* used for the callback from the process model code */
+struct task_state {
+	const struct service_details *service_details;
+	const struct model_ops *model_ops;
+};
+
+
+/*
+  called by the process model code when the new task starts up. This then calls
+  the server specific startup code
+*/
+static struct task_server *task_server_callback(struct tevent_context *event_ctx,
+				 struct loadparm_context *lp_ctx,
+				 struct server_id server_id,
+				 void *private_data,
+				 void *context)
+{
+	struct task_server *task;
+	NTSTATUS status = NT_STATUS_OK;
+
+	struct task_state *state = talloc_get_type(private_data, struct task_state);
+	task = talloc(event_ctx, struct task_server);
+	if (task == NULL) return NULL;
+
+	task->event_ctx = event_ctx;
+	task->model_ops = state->model_ops;
+	task->server_id = server_id;
+	task->lp_ctx = lp_ctx;
+	task->process_context = context;
+
+	task->msg_ctx = imessaging_init(task,
+					task->lp_ctx,
+					task->server_id,
+					task->event_ctx);
+	if (!task->msg_ctx) {
+		task_server_terminate(task, "imessaging_init() failed", true);
+		return NULL;
+	}
+
+	status = state->service_details->task_init(task);
+	if (!NT_STATUS_IS_OK(status)) {
+		return NULL;
+	}
+	return task;
+}
+
+/*
+  startup a task based server
+*/
+NTSTATUS task_server_startup(struct tevent_context *event_ctx,
+			     struct loadparm_context *lp_ctx,
+			     const char *service_name,
+			     const struct model_ops *model_ops,
+			     const struct service_details *service_details,
+			     int from_parent_fd)
+{
+	struct task_state *state;
+
+	state = talloc(event_ctx, struct task_state);
+	NT_STATUS_HAVE_NO_MEMORY(state);
+
+	state->service_details = service_details;
+	state->model_ops = model_ops;
+
+	state->model_ops->new_task(event_ctx, lp_ctx, service_name,
+			           task_server_callback, state, service_details,
+				   from_parent_fd);
+
+	return NT_STATUS_OK;
+}
+
+/*
+  setup a task title 
+*/
+void task_server_set_title(struct task_server *task, const char *title)
+{
+	task->model_ops->set_title(task->event_ctx, title);
+}