1 files changed, 43 insertions, 0 deletions
diff --git a/hurd/fchroot.c b/hurd/fchroot.c
new file mode 100644
index 0000000000..cccf1391be
--- /dev/null
+++ b/hurd/fchroot.c
@@ -0,0 +1,43 @@
+/* Copyright (C) 1991, 1992, 1993, 1994 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 Library General Public License as
+published by the Free Software Foundation; either version 2 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <ansidecl.h>
+#include <unistd.h>
+#include <hurd.h>
+#include <hurd/fd.h>
+
+/* Change the current root directory to FD.  */
+int
+DEFUN(fchroot, (fd), int fd)
+{
+  error_t err;
+  file_t dir;
+
+  err = __USEPORT (CRDIR,
+		   ({ file_t crdir = port;
+		      HURD_DPORT_USE (fd,
+				      __hurd_file_name_lookup (crdir, port, "",
+							       0, 0, &dir));
+		    }));
+
+  if (err)
+    return __hurd_fail (err);
+
+  _hurd_port_set (&_hurd_ports[INIT_PORT_CRDIR], dir);
+  return 0;
+}