Apply a patch from Evin Robertson -- new pivot_root applet.

 -Erik


git-svn-id: svn://busybox.net/trunk/busybox@1799 69ca8d6d-28ef-0310-b511-8ec308f3f277

1 files changed, 39 insertions, 0 deletions

diff --git a/util-linux/pivot_root.c b/util-linux/pivot_root.c
new file mode 100644
index 000000000..92fe4aeab
--- /dev/null
+++ b/util-linux/pivot_root.c
@@ -0,0 +1,39 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * pivot_root.c - Change root file system.  Based on util-linux 2.10s
+ *
+ * busyboxed by Evin Robertson
+ */
+#include "busybox.h"
+#include <stdlib.h>
+#include <stdio.h>
+#include <sys/syscall.h>
+#include <linux/unistd.h>
+
+#ifndef __NR_pivot_root
+#error Sorry, but this kernel does not support the pivot_root syscall
+#endif
+
+static _syscall2(int,pivot_root,const char *,new_root,const char *,put_old)
+
+
+int pivot_root_main(int argc, char **argv)
+{
+    if (argc != 3)
+        usage(pivot_root_usage);
+
+    if (pivot_root(argv[1],argv[2]) < 0)
+        perror_msg_and_die("pivot_root");
+
+    return EXIT_SUCCESS;
+
+}
+
+
+/*
+Local Variables:
+c-file-style: "linux"
+c-basic-offset: 4
+tab-width: 4
+End:
+*/