2001-01-25 Joel Sherrill <joel@OARcorp.com>

	* cpu.c, rtems/score/cpu.h: Bug report from Peter Mueller
	<peter.o.mueller@gmx.de> because of not correcting for the ISR
	vector table now being allocated from the workspace.

1 files changed, 59 insertions, 0 deletions

diff --git a/c/src/lib/libc/chroot.c b/c/src/lib/libc/chroot.c
new file mode 100644
index 0000000000..b48082bda7
--- /dev/null
+++ b/c/src/lib/libc/chroot.c
@@ -0,0 +1,59 @@
+/*  
+ *  chroot() -  Change Root Directory
+ *  Author: fernando.ruiz@ctv.es
+ *
+ *  COPYRIGHT (c) 1989-1999.
+ *  On-Line Applications Research Corporation (OAR).
+ *
+ *  The license and distribution terms for this file may be
+ *  found in the file LICENSE in this distribution or at
+ *  http://www.OARcorp.com/rtems/license.html.
+ *
+ *  $Id$
+ */
+
+#if HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <rtems.h>
+
+#include <unistd.h>
+#include <errno.h>
+
+#include <rtems/libio_.h>
+
+int chroot(
+  const char *pathname
+)
+{
+  int                               result;
+  rtems_filesystem_location_info_t  loc;
+  
+  if (rtems_current_user_env == &rtems_global_user_env)
+    set_errno_and_return_minus_one( ENOTSUP );
+
+  loc = rtems_filesystem_root;i    /* save the value */
+
+  /* if has been already changed */
+  rtems_filesystem_root = rtems_global_user_env.filesystem_root;
+
+  result = chdir(pathname);
+  if (result) {
+    rtems_filesystem_root = loc; /* restore the value */
+    set_errno_and_return_minus_one( errno );
+  };
+  rtems_filesystem_root = rtems_filesystem_current;
+
+  result = chdir("/");
+  if (result) {
+    rtems_filesystem_root = loc; /* restore the value */
+    set_errno_and_return_minus_one( errno );
+  };
+
+  /*XXX : Call this? Sorry but I don't known if it is necesary */
+  /* The old root.
+   rtems_filesystem_freenode( &loc );
+   */
+  return 0;
+}