1 files changed, 101 insertions, 0 deletions
diff --git a/src/cgroups-agent.c b/src/cgroups-agent.c
new file mode 100644
index 0000000000..1bbc8827d7
--- /dev/null
+++ b/src/cgroups-agent.c
@@ -0,0 +1,101 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+  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 <dbus/dbus.h>
+
+#include <stdlib.h>
+
+#include "log.h"
+#include "dbus-common.h"
+
+int main(int argc, char *argv[]) {
+        DBusError error;
+        DBusConnection *bus = NULL;
+        DBusMessage *m = NULL;
+        int r = EXIT_FAILURE;
+
+        dbus_error_init(&error);
+
+        if (argc != 2) {
+                log_error("Incorrect number of arguments.");
+                goto finish;
+        }
+
+        log_set_target(LOG_TARGET_AUTO);
+        log_parse_environment();
+        log_open();
+
+        /* We send this event to the private D-Bus socket and then the
+         * system instance will forward this to the system bus. We do
+         * this to avoid an activation loop when we start dbus when we
+         * are called when the dbus service is shut down. */
+
+        if (!(bus = dbus_connection_open_private("unix:path=/run/systemd/private", &error))) {
+#ifndef LEGACY
+                dbus_error_free(&error);
+
+                /* Retry with the pre v21 socket name, to ease upgrades */
+                if (!(bus = dbus_connection_open_private("unix:abstract=/org/freedesktop/systemd1/private", &error))) {
+#endif
+                        log_error("Failed to get D-Bus connection: %s", bus_error_message(&error));
+                        goto finish;
+                }
+#ifndef LEGACY
+        }
+#endif
+
+        if (bus_check_peercred(bus) < 0) {
+                log_error("Bus owner not root.");
+                goto finish;
+        }
+
+        if (!(m = dbus_message_new_signal("/org/freedesktop/systemd1/agent", "org.freedesktop.systemd1.Agent", "Released"))) {
+                log_error("Could not allocate signal message.");
+                goto finish;
+        }
+
+        if (!dbus_message_append_args(m,
+                                      DBUS_TYPE_STRING, &argv[1],
+                                      DBUS_TYPE_INVALID)) {
+                log_error("Could not attach group information to signal message.");
+                goto finish;
+        }
+
+        if (!dbus_connection_send(bus, m, NULL)) {
+                log_error("Failed to send signal message on private connection.");
+                goto finish;
+        }
+
+        r = EXIT_SUCCESS;
+
+finish:
+        if (bus) {
+                dbus_connection_flush(bus);
+                dbus_connection_close(bus);
+                dbus_connection_unref(bus);
+        }
+
+        if (m)
+                dbus_message_unref(m);
+
+        dbus_error_free(&error);
+        return r;
+}