-/*-*- 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/>.
-***/
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
#include <stdlib.h>
-#include "sd-bus.h"
-
-#include "bus-util.h"
+#include "fd-util.h"
#include "log.h"
+#include "socket-util.h"
int main(int argc, char *argv[]) {
- _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
+
+ static const union sockaddr_union sa = {
+ .un.sun_family = AF_UNIX,
+ .un.sun_path = "/run/systemd/cgroups-agent",
+ };
+
+ _cleanup_close_ int fd = -EBADF;
+ ssize_t n;
+ size_t l;
int r;
+ r = rearrange_stdio(-1, -1, -1);
+ if (r < 0) {
+ log_error_errno(r, "Failed to connect stdin/stdout/stderr with /dev/null: %m");
+ return EXIT_FAILURE;
+ }
+
if (argc != 2) {
log_error("Incorrect number of arguments.");
return EXIT_FAILURE;
}
- log_set_target(LOG_TARGET_AUTO);
- log_parse_environment();
- log_open();
+ log_setup();
+
+ fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0);
+ if (fd < 0) {
+ log_debug_errno(errno, "Failed to allocate socket: %m");
+ return EXIT_FAILURE;
+ }
- /* 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. */
+ l = strlen(argv[1]);
- r = bus_connect_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");
+ n = sendto(fd, argv[1], l, 0, &sa.sa, SOCKADDR_UN_LEN(sa.un));
+ if (n < 0) {
+ log_debug_errno(errno, "Failed to send cgroups agent message: %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");
+ if ((size_t) n != l) {
+ log_debug("Datagram size mismatch");
return EXIT_FAILURE;
}