This is a robust version of chdir, in that it can handle directory

names longer than PATH_MAX.

1 files changed, 36 insertions, 0 deletions

diff --git a/lib/chdir.h b/lib/chdir.h
new file mode 100644
index 000000000..ee7cfba21
--- /dev/null
+++ b/lib/chdir.h
@@ -0,0 +1,36 @@
+/* provide a chdir function that tries not to fail due to ENAMETOOLONG
+   Copyright (C) 2004 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.
+
+   This program 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 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.  */
+
+/* Written by Jim Meyering.  */
+
+/* Include the headers that might declare chdir so that they will not
+   cause confusion if included after this file.  */
+
+#include <unistd.h>
+
+/* If necessary, systematically rename identifiers so that they do not
+   collide with the system function.  Renaming avoids problems with
+   some compilers and linkers.  */
+
+#ifdef __CHDIR_PREFIX
+# undef chdir
+# define __CHDIR_CONCAT(x, y) x ## y
+# define __CHDIR_XCONCAT(x, y) __CHDIR_CONCAT (x, y)
+# define __CHDIR_ID(y) __CHDIR_XCONCAT (__CHDIR_PREFIX, y)
+# define chdir __CHDIR_ID (chdir)
+int chdir (char const *dir);
+#endif