storage: Do not show an eject button on /boot partitions

Signed-off-by: Joseph Nuthalapati <njoseph@thoughtworks.com>
Reviewed-by: Sunil Mohan Adapa <sunil@medhas.org>

plinth/modules/storage/__init__.py

@@ -77,7 +77,7 @@ def get_disks():
                 combined_list.append(disk_from_df)
 
     for disk in combined_list:
-        disk['is_root_device'] = is_root_device(disk)
+        disk['is_removable'] = is_removable_device(disk)
 
     return combined_list
 
@@ -162,16 +162,26 @@ def get_disk_info(mount_point):
 def get_root_device(disks):
     """Return the root partition's device from list of partitions."""
     for disk in disks:
-        if is_root_device(disk):
+        if is_root_partition(disk):
             return disk['dev_kname']
     return None
 
 
-def is_root_device(disk):
+def is_removable_device(disk):
-    """Return whether a given disk is a root device or not."""
+    """Return whether a given disk is a removable device or not."""
+    return not (is_root_partition(disk) or is_boot_partition(disk))
+
+
+def is_root_partition(disk):
+    """Returns whether this disk is mounted at /."""
     return disk['mountpoint'] == '/' and disk['type'] == 'part'
 
 
+def is_boot_partition(disk):
+    """Returns whether this disk is mounted at /boot."""
+    return disk['mountpoint'] == '/boot' and disk['type'] == 'part'
+
+
 def is_expandable(device):
     """Return the list of partitions that can be expanded."""
     if not device:

plinth/modules/storage/templates/storage.html

@@ -88,7 +88,7 @@
                   <div>{{ disk.used_str }} / {{ disk.size_str }}</div>
           </td>
           <td>
-            {% if not disk.is_root_device %}
+            {% if disk.is_removable %}
               <form class="form" method="post"
                     action="{% url 'storage:eject' disk.dev_kname|urlencode:'' %}">
                 {% csrf_token %}