X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=dbus-unit.c;h=f48433b60bc16cabe3de97f5b624dd758128c556;hp=db5a884836beaafe3c39ae26c3a8d853949f8c21;hb=84e9af1e01bfcc3ce9897c62aa76d356e97aa092;hpb=b548631afcd317fd0f762b324c086d1580f83a50

diff --git a/dbus-unit.c b/dbus-unit.c
index db5a88483..f48433b60 100644
--- a/dbus-unit.c
+++ b/dbus-unit.c
@@ -1,5 +1,24 @@
 /*-*- 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.h"
@@ -25,6 +44,7 @@ static const char introspection[] =
         "   <arg name=\"mode\" type=\"s\" direction=\"in\"/>"
         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>"
         "  </method>"
+        "  <signal name=\"Changed\"/>"
         "  <property name=\"Id\" type=\"s\" access=\"read\"/>"
         "  <property name=\"Description\" type=\"s\" access=\"read\"/>"
         "  <property name=\"LoadState\" type=\"s\" access=\"read\"/>"
@@ -306,3 +326,98 @@ static DBusHandlerResult bus_unit_message_handler(DBusConnection  *connection, D
 const DBusObjectPathVTable bus_unit_vtable = {
         .message_function = bus_unit_message_handler
 };
+
+void bus_unit_send_change_signal(Unit *u) {
+        char *p = NULL;
+        DBusMessage *m = NULL;
+
+        assert(u);
+        assert(u->meta.in_dbus_queue);
+
+        LIST_REMOVE(Meta, dbus_queue, u->meta.manager->dbus_unit_queue, &u->meta);
+        u->meta.in_dbus_queue = false;
+
+        if (set_isempty(u->meta.manager->subscribed))
+                return;
+
+        if (!(p = unit_dbus_path(u)))
+                goto oom;
+
+        if (u->meta.sent_dbus_new_signal) {
+                /* Send a change signal */
+
+                if (!(m = dbus_message_new_signal(p, "org.freedesktop.systemd1.Unit", "Changed")))
+                        goto oom;
+        } else {
+                const char *id;
+                /* Send a new signal */
+
+                if (!(m = dbus_message_new_signal("/org/freedesktop/systemd1", "org.freedesktop.systemd1", "UnitNew")))
+                        goto oom;
+
+                id = unit_id(u);
+                if (!dbus_message_append_args(m,
+                                              DBUS_TYPE_STRING, &id,
+                                              DBUS_TYPE_OBJECT_PATH, &p,
+                                              DBUS_TYPE_INVALID))
+                        goto oom;
+        }
+
+        if (!dbus_connection_send(u->meta.manager->bus, m, NULL))
+                goto oom;
+
+        free(p);
+        dbus_message_unref(m);
+
+        u->meta.sent_dbus_new_signal = true;
+
+        return;
+
+oom:
+        free(p);
+
+        if (m)
+                dbus_message_unref(m);
+
+        log_error("Failed to allocate unit change/new signal.");
+}
+
+void bus_unit_send_removed_signal(Unit *u) {
+        char *p = NULL;
+        DBusMessage *m = NULL;
+        const char *id;
+
+        assert(u);
+
+        if (set_isempty(u->meta.manager->subscribed) || !u->meta.sent_dbus_new_signal)
+                return;
+
+        if (!(p = unit_dbus_path(u)))
+                goto oom;
+
+        if (!(m = dbus_message_new_signal("/org/freedesktop/systemd1", "org.freedesktop.systemd1", "UnitRemoved")))
+                goto oom;
+
+        id = unit_id(u);
+        if (!dbus_message_append_args(m,
+                                      DBUS_TYPE_STRING, &id,
+                                      DBUS_TYPE_OBJECT_PATH, &p,
+                                      DBUS_TYPE_INVALID))
+                goto oom;
+
+        if (!dbus_connection_send(u->meta.manager->bus, m, NULL))
+                goto oom;
+
+        free(p);
+        dbus_message_unref(m);
+
+        return;
+
+oom:
+        free(p);
+
+        if (m)
+                dbus_message_unref(m);
+
+        log_error("Failed to allocate unit remove signal.");
+}