From 3950ffe2a485479f6561c27364d3d7df5a21d124 Mon Sep 17 00:00:00 2001 From: Igor Pashev Date: Sun, 24 Jun 2012 22:28:35 +0000 Subject: Imported Upstream version 93u+ --- src/lib/libast/comp/dup2.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 src/lib/libast/comp/dup2.c (limited to 'src/lib/libast/comp/dup2.c') diff --git a/src/lib/libast/comp/dup2.c b/src/lib/libast/comp/dup2.c new file mode 100644 index 0000000..6999972 --- /dev/null +++ b/src/lib/libast/comp/dup2.c @@ -0,0 +1,46 @@ +/*********************************************************************** +* * +* This software is part of the ast package * +* Copyright (c) 1985-2011 AT&T Intellectual Property * +* and is licensed under the * +* Eclipse Public License, Version 1.0 * +* by AT&T Intellectual Property * +* * +* A copy of the License is available at * +* http://www.eclipse.org/org/documents/epl-v10.html * +* (with md5 checksum b35adb5213ca9657e911e9befb180842) * +* * +* Information and Software Systems Research * +* AT&T Research * +* Florham Park NJ * +* * +* Glenn Fowler * +* David Korn * +* Phong Vo * +* * +***********************************************************************/ +#pragma prototyped + +#include + +#if _lib_dup2 + +NoN(dup2) + +#else + +#include + +int +dup2(int d1, int d2) +{ + int save_errno; + + if (d1 == d2) return(d1); + save_errno = errno; + close(d2); + errno = save_errno; + return(fcntl(d1, F_DUPFD, d2)); +} + +#endif -- cgit v1.2.3