man/send-unit-files-changed.c


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#include <systemd/sd-bus.h>
#define _cleanup_(f) __attribute__((cleanup(f)))

int send_unit_files_changed(sd_bus *bus) {
  _cleanup_(sd_bus_message_unrefp) sd_bus_message *message = NULL;
  int r;

  r = sd_bus_message_new_signal(bus, &message,
                                "/org/freedesktop/systemd1",
                                "org.freedesktop.systemd1.Manager",
                                "UnitFilesChanged");
  if (r < 0)
    return r;

  return sd_bus_send(bus, message, NULL);
}