text: /* Copyright (c) 2003-2004, Roger Dingledine
   * Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
   * Copyright (c) 2007-2021, The Tor Project, Inc. */
  /* See LICENSE for licensing information */
  
  /**
   * \file lockfile.h
   *
   * \brief Header for lockfile.c
   **/
  
  #ifndef TOR_LOCKFILE_H
  #define TOR_LOCKFILE_H
  
  typedef struct tor_lockfile_t tor_lockfile_t;
  tor_lockfile_t *tor_lockfile_lock(const char *filename, int blocking,
                                    int *locked_out);
  void tor_lockfile_unlock(tor_lockfile_t *lockfile);
  
  #endif /* !defined(TOR_LOCKFILE_H) */
  