text: /*
   * Copyright (c) 2014 Red Hat, Inc.
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   *
   * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   */
  /*
  FUNCTION
  <<__fsetlocking>>---set or query locking mode on FILE stream
  
  INDEX
  	__fsetlocking
  
  SYNOPSIS
  	#include <stdio.h>
  	#include <stdio_ext.h>
  	int __fsetlocking(FILE *<[fp]>, int <[type]>);
  
  DESCRIPTION
  This function sets how the stdio functions handle locking of FILE <[fp]>.
  The following values describe <[type]>:
  
  <<FSETLOCKING_INTERNAL>> is the default state, where stdio functions
  automatically lock and unlock the stream.
  
  <<FSETLOCKING_BYCALLER>> means that automatic locking in stdio functions
  is disabled. Applications which set this take all responsibility for file
  locking themselves.
  
  <<FSETLOCKING_QUERY>> returns the current locking mode without changing it.
  
  RETURNS
  <<__fsetlocking>> returns the current locking mode of <[fp]>.
  
  PORTABILITY
  This function originates from Solaris and is also provided by GNU libc.
  
  No supporting OS subroutines are required.
  */
  
  #ifndef __rtems__
  
  #include <_ansi.h>
  #include <stdio.h>
  #include <stdio_ext.h>
  #include "local.h"
  
  int
  __fsetlocking (FILE * fp,
         int type)
  {
    int result;
    CHECK_INIT(_REENT, fp);
    result = (fp->_flags2 & __SNLK) ? FSETLOCKING_BYCALLER : FSETLOCKING_INTERNAL;
    switch (type)
      {
      case FSETLOCKING_BYCALLER:
        fp->_flags2 |= __SNLK;
        break;
      case FSETLOCKING_INTERNAL:
        fp->_flags2 &= ~__SNLK;
        break;
      case FSETLOCKING_QUERY:
      default:
        break;
      }
    return result;
  }
  
  #endif /* __rtems__ */
  