/* Invoke dup, but avoid some glitches.
- Copyright (C) 2001, 2004, 2005, 2006, 2009 Free Software
- Foundation, Inc.
+ Copyright (C) 2001, 2004-2006, 2009-2010 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
int
dup_safer (int fd)
{
-#if defined F_DUPFD && !REPLACE_FCHDIR
return fcntl (fd, F_DUPFD, STDERR_FILENO + 1);
-#else
- /* fd_safer calls us back, but eventually the recursion unwinds and
- does the right thing. */
- return fd_safer (dup (fd));
-#endif
}
-
-#if GNULIB_CLOEXEC
-
-# include "cloexec.h"
-
-# ifndef O_CLOEXEC
-# define O_CLOEXEC 0
-# endif
-
-/* Like dup, but do not return STDIN_FILENO, STDOUT_FILENO, or
- STDERR_FILENO. If FLAG contains O_CLOEXEC, behave like
- fcntl(F_DUPFD_CLOEXEC) rather than fcntl(F_DUPFD). */
-
-int
-dup_safer_flag (int fd, int flag)
-{
- if (flag & O_CLOEXEC)
- {
-# if defined F_DUPFD_CLOEXEC && !REPLACE_FCHDIR
- return fcntl (fd, F_DUPFD_CLOEXEC, STDERR_FILENO + 1);
-# else
- /* fd_safer_flag calls us back, but eventually the recursion
- unwinds and does the right thing. */
- fd = dup_cloexec (fd);
- return fd_safer_flag (fd, flag);
-# endif
- }
- return dup_safer (fd);
-}
-
-#endif