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/* $OpenBSD: dup2.c,v 1.1.1.1 2018/04/10 23:00:53 bluhm Exp $ */
/*
* Copyright (c) 2018 Alexander Bluhm <bluhm@openbsd.org>
*
* 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 <err.h>
#include <unistd.h>
#include "header.h"
void
fdops(int fdpre, int fdpost)
{
if (dup2(fdpre, 5) == -1)
err(1, "dup2 pre");
if (dup2(fdpost, 6) == -1)
err(1, "dup2 post");
if (dup2(fdpre, 7) == -1)
err(1, "dup2 pepare post overwite");
if (dup2(fdpost, 7) == -1)
err(1, "dup2 post overwrite");
if (dup2(fdpost, 8) == -1)
err(1, "dup2 pepare pre overwrite");
if (dup2(fdpre, 8) == -1)
err(1, "dup2 pre overwite");
if (dup2(fdpre, 9) == -1)
err(1, "dup2 pepare pre equal");
if (dup2(9, 9) == -1)
err(1, "dup2 pre equal");
if (dup2(fdpost, 10) == -1)
err(1, "dup2 pepare post equal");
if (dup2(10, 10) == -1)
err(1, "dup2 post equal");
}
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