From 404bb40fd9300aad3f80161339988eb5b6c6643c Mon Sep 17 00:00:00 2001
From: Vojtech Trefny <vtrefny@redhat.com>
Date: Thu, 29 Jan 2026 12:40:00 +0100
Subject: [PATCH] Revert "dm: Remove root permission check in bd_dm_map_exists"

This reverts commit 80ba38c1fa183b1fb19dd43cd4496df1cdaa2a39.

Unfortunately blivet depends on libblockdev returning this
specific error message.
---
 src/plugins/dm.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/plugins/dm.c b/src/plugins/dm.c
index b88afa1c..18024e4f 100644
--- a/src/plugins/dm.c
+++ b/src/plugins/dm.c
@@ -315,6 +315,12 @@ gboolean bd_dm_map_exists (const gchar *map_name, gboolean live_only, gboolean a
     guint64 next = 0;
     gboolean ret = FALSE;
 
+    if (geteuid () != 0) {
+        g_set_error (error, BD_DM_ERROR, BD_DM_ERROR_NOT_ROOT,
+                     "Not running as root, cannot query DM maps");
+        return FALSE;
+    }
+
     task_list = dm_task_create (DM_DEVICE_LIST);
     if (!task_list) {
         g_set_error (error, BD_DM_ERROR, BD_DM_ERROR_TASK,