1 /* Invoke dup, but avoid some glitches.
2 Copyright (C) 2001, 2004 Free Software Foundation, Inc.
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2, or (at your option)
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software Foundation,
16 Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
18 /* Written by Paul Eggert. */
34 # define STDERR_FILENO 2
37 #include <unistd-safer.h>
39 /* Like dup, but do not return STDIN_FILENO, STDOUT_FILENO, or
46 return fcntl (fd, F_DUPFD, STDERR_FILENO + 1);
49 if (0 <= f && f <= STDERR_FILENO)
51 int f1 = dup_safer (f);