/*
 * Copyright (c) 2005 The DragonFly Project.  All rights reserved.
 * 
 * This code is derived from software contributed to The DragonFly Project
 * by Joerg Sonnenberger <joerg@bec.de>.
 * 
 * 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.
 * 3. Neither the name of The DragonFly Project nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific, prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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
 * COPYRIGHT HOLDERS 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.
 *
 * $DragonFly: src/lib/libc_r/uthread/uthread_closefrom.c,v 1.2 2005/05/02 20:40:50 joerg Exp $
 */

#include <errno.h>
#include <pthread.h>
#include <unistd.h>
#include "pthread_private.h"

int
_closefrom(int fd)
{
	int i, error, my_errno;

	my_errno = errno;

	for (i = fd; i < _thread_dtablesize; i++)
		_close(i);

	errno = my_errno;

	/* Check if we have to do anything. */
	if (_thread_kern_pipe[0] < fd && _thread_kern_pipe[1] < fd)
		return(_closefrom(fd));

	/* Defer signals, we want to close the pipe. */
	_thread_kern_sig_defer();

	__sys_close(_thread_kern_pipe[0]);
	__sys_close(_thread_kern_pipe[1]);
	error = __sys_closefrom(fd);

	_thread_mksigpipe();

	/* Pipe is working again, handle signals. */
	_thread_kern_sig_undefer();

	return(error);
}

__strong_reference(_closefrom, closefrom);