Revert "Remove src/cgroups-agent"

This reverts commit 024e2f0da33fa05f4d5aa696e9f715264e9cd41f.

2 files changed, 67 insertions, 0 deletions

diff --git a/src/cgroups-agent/Makefile b/src/cgroups-agent/Makefile
new file mode 120000
index 0000000000..d0b0e8e008
--- /dev/null
+++ b/src/cgroups-agent/Makefile
@@ -0,0 +1 @@
+../Makefile
\ No newline at end of file
diff --git a/src/cgroups-agent/cgroups-agent.c b/src/cgroups-agent/cgroups-agent.c
new file mode 100644
index 0000000000..529e843030
--- /dev/null
+++ b/src/cgroups-agent/cgroups-agent.c
@@ -0,0 +1,66 @@
+/*-*- 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 Lesser General Public License as published by
+  the Free Software Foundation; either version 2.1 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
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public License
+  along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <stdlib.h>
+
+#include "sd-bus.h"
+#include "log.h"
+#include "bus-util.h"
+
+int main(int argc, char *argv[]) {
+        _cleanup_bus_close_unref_ sd_bus *bus = NULL;
+        int r;
+
+        if (argc != 2) {
+                log_error("Incorrect number of arguments.");
+                return EXIT_FAILURE;
+        }
+
+        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. */
+
+        r = bus_open_system_systemd(&bus);
+        if (r < 0) {
+                /* If we couldn't connect we assume this was triggered
+                 * while systemd got restarted/transitioned from
+                 * initrd to the system, so let's ignore this */
+                log_debug_errno(r, "Failed to get D-Bus connection: %m");
+                return EXIT_FAILURE;
+        }
+
+        r = sd_bus_emit_signal(bus,
+                               "/org/freedesktop/systemd1/agent",
+                               "org.freedesktop.systemd1.Agent",
+                               "Released",
+                               "s", argv[1]);
+        if (r < 0) {
+                log_debug_errno(r, "Failed to send signal message on private connection: %m");
+                return EXIT_FAILURE;
+        }
+
+        return EXIT_SUCCESS;
+}