bsd.c

/* -*- Mode: C ; c-basic-offset: 2; indent-tabs-mode: t; tab-width: 2 -*- */
/*
 * Copyright (c) 2013-2023 Nedko Arnaudov
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <unistd.h>
#include <sys/time.h>
#include <sys/resource.h>

void closefrom(int start)
{
	struct rlimit max_fds;
	rlim_t fd;

	getrlimit(RLIMIT_NOFILE, &max_fds);

	for (fd = start; fd < max_fds.rlim_cur; fd++)	{
		close(fd);
	}
}