-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
/***
This file is part of systemd.
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
-#include <dbus/dbus.h>
-
#include <stdlib.h>
+#include <sys/socket.h>
+#include "fd-util.h"
#include "log.h"
-#include "dbus-common.h"
+#include "socket-util.h"
+
+/// Additional includes needed by elogind
+#include "musl_missing.h"
int main(int argc, char *argv[]) {
- DBusError error;
- DBusConnection *bus = NULL;
- DBusMessage *m = NULL;
- int r = EXIT_FAILURE;
- dbus_error_init(&error);
+ static const union sockaddr_union sa = {
+ .un.sun_family = AF_UNIX,
+ .un.sun_path = "/run/systemd/cgroups-agent",
+ };
+
+ _cleanup_close_ int fd = -1;
+ ssize_t n;
+ size_t l;
if (argc != 2) {
log_error("Incorrect number of arguments.");
- goto finish;
+ return EXIT_FAILURE;
}
+ elogind_set_program_name(argv[0]);
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
+ fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0);
+ if (fd < 0) {
+ log_debug_errno(errno, "Failed to allocate socket: %m");
+ return EXIT_FAILURE;
}
-#endif
- if (bus_check_peercred(bus) < 0) {
- log_error("Bus owner not root.");
- goto finish;
- }
+ l = strlen(argv[1]);
- if (!(m = dbus_message_new_signal("/org/freedesktop/systemd1/agent", "org.freedesktop.systemd1.Agent", "Released"))) {
- log_error("Could not allocate signal message.");
- goto finish;
+ 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;
}
- 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 ((size_t) n != l) {
+ log_debug("Datagram size mismatch");
+ return EXIT_FAILURE;
}
- 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;
+ return EXIT_SUCCESS;
}