01-add-oem-disk-usage-support.patch

--- a/moonraker/components/file_manager/file_manager.py	2026-02-06 19:12:24.179575409 +0100
+++ b/moonraker/components/file_manager/file_manager.py	2026-02-06 19:13:16.448036223 +0100
@@ -825,10 +825,12 @@
             }
             flist['disk_usage'] = disk_usage
         else:
+            free, total = self.get_user_space("/oem", 0)
+            used = total - free
             disk_usage = {
-                'free': 0,
-                'total': OEM_SPACE,
-                'used': OEM_SPACE
+                'free': free,
+                'total': total,
+                'used': used
             }
         flist['disk_usage'] = disk_usage
         flist['root_info'] = {
@@ -876,15 +878,16 @@
             TMP_GCODE_DIR,
             f"moonraker.upload-{loop_time}.mru")
 
-    def get_user_space(self) -> Any:
+    def get_user_space(self, dir: str = USER_DATA_PATH, reserved: int = RESERVED_USER_SPACE) -> Any:
         """Get the total & free space in MiB for the given path."""
         try:
-            statvfs = os.statvfs(USER_DATA_PATH)
+            statvfs = os.statvfs(dir)
             free_space = statvfs.f_frsize * statvfs.f_bavail
             total_space = statvfs.f_frsize * statvfs.f_blocks
 
-            total_space -= RESERVED_USER_SPACE
-            free_space -= RESERVED_USER_SPACE
+            total_space -= reserved
+            free_space -= reserved
+
             if total_space < 0:
                 total_space = 0
                 free_space  = 0
@@ -892,7 +895,7 @@
                 free_space = 0
             return free_space, total_space
         except Exception as e:
-            logging.error(f"Failed to get free space for {USER_DATA_PATH}: {e}")
+            logging.error(f"Failed to get free space for {dir}: {e}")
             return 0, 0
 
     def check_gcodes_space(self, required_space: int) -> bool: