Some uClinux architectures do not define pivot_root

diff --git a/libc/sysdeps/linux/common/pivot_root.c b/libc/sysdeps/linux/common/pivot_root.c
index 3b0e32d..c424afd 100644 (file)
--- a/libc/sysdeps/linux/common/pivot_root.c
+++ b/libc/sysdeps/linux/common/pivot_root.c
@@ -2,10 +2,19 @@
 /*
  * pivot_root() for uClibc
  *
- * Copyright (C) 2000-2004 by Erik Andersen <andersen@codepoet.org>
+ * Copyright (C) 2000-2005 by Erik Andersen <andersen@codepoet.org>
  *
  * GNU Library General Public License (LGPL) version 2 or later.
  */
 
 #include "syscalls.h"
+
+#ifdef __NR_pivot_root
 _syscall2(int, pivot_root, const char *, new_root, const char *, put_old);
+#else
+int pivot_root(const char *new_root, const char *put_old)
+{
+       __set_errno(ENOSYS);
+       return -1;
+}
+#endif