X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;ds=sidebyside;f=lib%2Fdup-safer.c;h=a6908511ac85f758625a336a5ef77f93fa70e506;hb=d9d370720f15fe910f40603a734f67e28b261cc2;hp=408a1bda76028f1215e17a3a131364cad19d3340;hpb=7b86224d4b04021cfc8fdea5bb254b67525c77a5;p=gnulib.git
diff --git a/lib/dup-safer.c b/lib/dup-safer.c
index 408a1bda7..a6908511a 100644
--- a/lib/dup-safer.c
+++ b/lib/dup-safer.c
@@ -1,10 +1,11 @@
/* Invoke dup, but avoid some glitches.
- Copyright (C) 2001, 2004 Free Software Foundation, Inc.
- This program is free software; you can redistribute it and/or modify
+ Copyright (C) 2001, 2004, 2005, 2006 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
- the Free Software Foundation; either version 2, or (at your option)
- any later version.
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -12,48 +13,32 @@
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software Foundation,
- Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+ along with this program. If not, see . */
/* Written by Paul Eggert. */
-#if HAVE_CONFIG_H
-# include
-#endif
+#include
-#include
+#include "unistd-safer.h"
-#if HAVE_FCNTL_H
-# include
-#endif
+#include
-#if HAVE_UNISTD_H
-# include
-#endif
+#include
#ifndef STDERR_FILENO
# define STDERR_FILENO 2
#endif
-#include
-
/* Like dup, but do not return STDIN_FILENO, STDOUT_FILENO, or
STDERR_FILENO. */
int
dup_safer (int fd)
{
-#ifdef F_DUPFD
+#if defined F_DUPFD && !defined FCHDIR_REPLACEMENT
return fcntl (fd, F_DUPFD, STDERR_FILENO + 1);
#else
- int f = dup (fd);
- if (0 <= f && f <= STDERR_FILENO)
- {
- int f1 = dup_safer (f);
- int e = errno;
- close (f);
- errno = e;
- f = f1;
- }
- return f;
+ /* fd_safer calls us back, but eventually the recursion unwinds and
+ does the right thing. */
+ return fd_safer (dup (fd));
#endif
}