PATCH: pyblock: return empty list instead of error when run as non-root

[Hans de Goede <hdegoede redhat com>]

Hi All,

This patch is necessary to run pychecker as non root,

Regards,

Hans

diff -up pyblock-0.32/dm.c~ pyblock-0.32/dm.c
--- pyblock-0.32/dm.c~	2008-10-24 15:31:33.000000000 +0200
+++ pyblock-0.32/dm.c	2008-10-24 15:31:33.000000000 +0200
@@ -1560,7 +1560,7 @@ pydm_rmpart(PyObject *self, PyObject *ar
 static PyObject *
 pydm_maps(PyObject *self)
 {
-	struct dm_task *task;
+	struct dm_task *task = NULL;
 	struct dm_names *names;
 	int n;
 	unsigned int next = 0;
@@ -1571,6 +1571,14 @@ pydm_maps(PyObject *self)
 	if (!list)
 		goto out;
 
+        /* dm_task_create() only works as root for non root use just return an
+           empty list */
+        if (geteuid()) {
+		printf("%s: %d: not running as root returning empty list\n",
+			__FILE__, __LINE__);
+		goto save_list;
+        }
+
 	task = dm_task_create(DM_DEVICE_LIST);
 	if (!task) {
 		if (!PyErr_Occurred()) {