path: add .path unit type for monitoring files

[elogind.git] / src / dbus-path.c

diff --git a/src/dbus-path.c b/src/dbus-path.c
new file mode 100644 (file)
index 0000000..ed1dc26
--- /dev/null
+++ b/src/dbus-path.c
@@ -0,0 +1,52 @@
+/*-*- Mode: C; c-basic-offset: 8 -*-*/
+
+/***
+  This file is part of systemd.
+
+  Copyright 2010 Lennart Poettering
+
+  systemd 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 2 of the License, or
+  (at your option) any later version.
+
+  systemd 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 systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <errno.h>
+
+#include "dbus-unit.h"
+#include "dbus-path.h"
+#include "dbus-execute.h"
+
+#define BUS_PATH_INTERFACE                                             \
+        " <interface name=\"org.freedesktop.systemd1.Path\">\n"        \
+        "  <property name=\"Unit\" type=\"s\"  access=\"read\"/>\n"     \
+        " </interface>\n"                                               \
+
+#define INTROSPECTION                                                   \
+        DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE                       \
+        "<node>\n"                                                      \
+        BUS_UNIT_INTERFACE                                              \
+        BUS_PATH_INTERFACE                                             \
+        BUS_PROPERTIES_INTERFACE                                        \
+        BUS_INTROSPECTABLE_INTERFACE                                    \
+        "</node>\n"
+
+const char bus_path_interface[] = BUS_PATH_INTERFACE;
+
+DBusHandlerResult bus_path_message_handler(Unit *u, DBusMessage *message) {
+        const BusProperty properties[] = {
+                BUS_UNIT_PROPERTIES,
+                { "org.freedesktop.systemd1.Path", "Unit", bus_property_append_string, "s", &u->path.unit->meta.id },
+                { NULL, NULL, NULL, NULL, NULL }
+        };
+
+        return bus_default_message_handler(u->meta.manager, message, INTROSPECTION, properties);
+}