File: [local] / src / usr.bin / ssh / Attic / closefrom.c (download)
Revision 1.1.2.1, Thu Aug 19 22:37:31 2004 UTC (19 years, 9 months ago) by brad
Branch: OPENBSD_3_4
Changes since 1.1: +54 -0 lines
upgrade to OpenSSH 3.9
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/*
* Copyright (c) 2004 Todd C. Miller <Todd.Miller@courtesan.com>
*
* 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 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 "includes.h"
#include <sys/types.h>
#include <sys/param.h>
#include <unistd.h>
#include <stdio.h>
#include <limits.h>
#include <stdlib.h>
#include <stddef.h>
#include <dirent.h>
RCSID("$Id: closefrom.c,v 1.1.2.1 2004/08/19 22:37:31 brad Exp $");
#ifndef lint
static const char sudorcsid[] = "$Sudo: closefrom.c,v 1.6 2004/06/01 20:51:56 millert Exp $";
#endif /* lint */
/*
* Close all file descriptors greater than or equal to lowfd.
*/
void
closefrom(int lowfd)
{
long fd, maxfd;
{
/*
* Fall back on sysconf(). We avoid checking resource limits since
* it is possible to open a file descriptor and then drop the rlimit
* such that it is below the open fd.
*/
maxfd = sysconf(_SC_OPEN_MAX);
if (maxfd < 0)
maxfd = OPEN_MAX;
for (fd = lowfd; fd < maxfd; fd++)
(void) close((int) fd);
}
}