block_steam_clear_default.patch

diff --git a/src/tools/wpctl.c b/src/tools/wpctl.c
index 9f507ec..27305f9 100644
--- a/src/tools/wpctl.c
+++ b/src/tools/wpctl.c
@@ -1326,6 +1326,44 @@ clear_default_run (WpCtl * self)
 {
   g_autoptr (WpPlugin) def_nodes_api = NULL;
   gboolean res = FALSE;
+  g_autoptr (GError) error = NULL;
+  pid_t ppid, grandparent_pid;
+  char grandparent_name[1024];
+
+  /* Get grandparent process name */
+  ppid = getppid();
+  if (ppid > 0) {
+    /* Get parent's PPID (which is our grandparent) */
+    char parent_status[256];
+    snprintf(parent_status, sizeof(parent_status), "/proc/%d/status", ppid);
+    FILE *fp = fopen(parent_status, "r");
+    if (fp) {
+      char line[256];
+      while (fgets(line, sizeof(line), fp)) {
+        if (sscanf(line, "PPid: %d", &grandparent_pid) == 1) {
+          break;
+        }
+      }
+      fclose(fp);
+    }
+
+    /* Check if grandparent is Steam */
+    if (grandparent_pid > 0) {
+      snprintf(grandparent_name, sizeof(grandparent_name), "/proc/%d/comm", grandparent_pid);
+      fp = fopen(grandparent_name, "r");
+      if (fp) {
+        if (fgets(grandparent_name, sizeof(grandparent_name), fp)) {
+          grandparent_name[strcspn(grandparent_name, "\n")] = 0;
+          if (strcmp(grandparent_name, "steam") == 0) {
+            fprintf(stderr, "Command 'wpctl clear-default' is disabled when run from Steam\n");
+            self->exit_code = 1;
+            goto out;
+          }
+        }
+        fclose(fp);
+      }
+    }
+  }
 
   def_nodes_api = wp_plugin_find (self->core, "default-nodes-api");
   if (!def_nodes_api) {