From 7c1f3701d5dbb71f5403d36e67a6492426b1b793 Mon Sep 17 00:00:00 2001
From: Koichiro Iwao <meta@FreeBSD.org>
Date: Apr 20 2023 02:22:23 +0000
Subject: Add guard before accessing ks.handler.btrfs.btrfsList


Fixes the following error.

```
Traceback (most recent call last):
  File "/bin/appliance-creator", line 193, in <module>
    sys.exit(main())
  File "/bin/appliance-creator", line 155, in main
    creator.configure()
  File "/usr/lib/python3.9/site-packages/imgcreate/creator.py", line 799, in configure
    self._create_bootconfig()
  File "/usr/lib/python3.9/site-packages/appcreate/appliance.py", line 619, in _create_bootconfig
    self._create_grub_config()
  File "/usr/lib/python3.9/site-packages/appcreate/appliance.py", line 337, in _create_grub_config
    options = self._kernel_cmdline_append()
  File "/usr/lib/python3.9/site-packages/appcreate/appliance.py", line 268, in _kernel_cmdline_append
    for s in self.ks.handler.btrfs.btrfsList:
AttributeError: 'RHEL9_BTRFS' object has no attribute 'btrfsList'
```

---

diff --git a/appcreate/appliance.py b/appcreate/appliance.py
index 474a3b9..e9ff5bf 100644
--- a/appcreate/appliance.py
+++ b/appcreate/appliance.py
@@ -265,9 +265,10 @@ class ApplianceImageCreator(ImageCreator):
         lang = self.ks.handler.lang.lang
         if lang != '':
             options = '%s LANG=%s' % (options, lang)
-        for s in self.ks.handler.btrfs.btrfsList:
-            if s.subvol and s.name == "root":
-                options = '%s rootflags=subvol=root' % options
+        if (hasattr(self.ks.handler.btrfs, "btrfsList")):
+            for s in self.ks.handler.btrfs.btrfsList:
+                if s.subvol and s.name == "root":
+                    options = '%s rootflags=subvol=root' % options
         return options
 
     def _create_grub_devices(self, grubversion = 1):