include/qemu/systemd.h

   1 /*
   2  * systemd socket activation support
   3  *
   4  * Copyright 2017 Red Hat, Inc. and/or its affiliates
   5  *
   6  * Authors:
   7  *  Richard W.M. Jones <rjones@redhat.com>
   8  *
   9  * This work is licensed under the terms of the GNU GPL, version 2 or later.
  10  * See the COPYING file in the top-level directory.
  11  */
  12
  13 #ifndef QEMU_SYSTEMD_H
  14 #define QEMU_SYSTEMD_H
  15
  16 #define FIRST_SOCKET_ACTIVATION_FD 3 /* defined by systemd ABI */
  17
  18 /*
  19  * Check if socket activation was requested via use of the
  20  * LISTEN_FDS and LISTEN_PID environment variables.
  21  *
  22  * Returns 0 if no socket activation, or the number of FDs.
  23  */
  24 unsigned int check_socket_activation(void);
  25
  26 #endif