Added 'zero' command to wipe partition tables and superblocks.

python/guestfs-py.c

@@ -3027,6 +3027,31 @@ py_guestfs_fsck (PyObject *self, PyObject *args)
   return py_r;
 }
 
+static PyObject *
+py_guestfs_zero (PyObject *self, PyObject *args)
+{
+  PyObject *py_g;
+  guestfs_h *g;
+  PyObject *py_r;
+  int r;
+  const char *device;
+
+  if (!PyArg_ParseTuple (args, (char *) "Os:guestfs_zero",
+                         &py_g, &device))
+    return NULL;
+  g = get_handle (py_g);
+
+  r = guestfs_zero (g, device);
+  if (r == -1) {
+    PyErr_SetString (PyExc_RuntimeError, guestfs_last_error (g));
+    return NULL;
+  }
+
+  Py_INCREF (Py_None);
+  py_r = Py_None;
+  return py_r;
+}
+
 static PyMethodDef methods[] = {
   { (char *) "create", py_guestfs_create, METH_VARARGS, NULL },
   { (char *) "close", py_guestfs_close, METH_VARARGS, NULL },
@@ -3135,6 +3160,7 @@ static PyMethodDef methods[] = {
   { (char *) "set_e2uuid", py_guestfs_set_e2uuid, METH_VARARGS, NULL },
   { (char *) "get_e2uuid", py_guestfs_get_e2uuid, METH_VARARGS, NULL },
   { (char *) "fsck", py_guestfs_fsck, METH_VARARGS, NULL },
+  { (char *) "zero", py_guestfs_zero, METH_VARARGS, NULL },
   { NULL, NULL, 0, NULL }
 };
 

python/guestfs.py

@@ -1163,3 +1163,14 @@ class GuestFS:
         """
         return libguestfsmod.fsck (self._o, fstype, device)
 
+    def zero (self, device):
+        u"""This command writes zeroes over the first few blocks of
+        "device".
+        
+        How many blocks are zeroed isn't specified (but it's
+        *not* enough to securely wipe the device). It should be
+        sufficient to remove any partition tables, filesystem
+        superblocks and so on.
+        """
+        return libguestfsmod.zero (self._o, device)
+