From 0ecb606cb6cf65de1d9fc8a919bceb4be476c602 Mon Sep 17 00:00:00 2001 From: Jakub Jelinek Date: Thu, 12 Jul 2007 18:26:36 +0000 Subject: 2.5-18.1 --- io/dup2.c | 48 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 io/dup2.c (limited to 'io/dup2.c') diff --git a/io/dup2.c b/io/dup2.c new file mode 100644 index 0000000..2b89789 --- /dev/null +++ b/io/dup2.c @@ -0,0 +1,48 @@ +/* Copyright (C) 1991, 1995, 1996, 1997, 2002 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include +#include +#include + + +/* Duplicate FD to FD2, closing the old FD2 and making FD2 be + open the same file as FD is. Return FD2 or -1. */ +int +__dup2 (fd, fd2) + int fd; + int fd2; +{ + if (fd < 0 || fd2 < 0) + { + __set_errno (EBADF); + return -1; + } + + if (fd == fd2) + /* No way to check that they are valid. */ + return fd2; + + __set_errno (ENOSYS); + return -1; +} +libc_hidden_def (__dup2) +stub_warning (dup2) + +weak_alias (__dup2, dup2) +#include -- cgit v1.1