commit 39f086c254b5f8757a569d475ca957b4ea18ff99
author Nico Huber <nico.huber@secunet.com> Tue Jan 09 17:43:06 2024 +0100
committer Nico Huber <nico.huber@secunet.com> Tue Jan 09 17:43:06 2024 +0100
tree 8a44f0b9a985c7804b49c765212edead8ce221cc
parent ecafb8f3b43b72cac2dea3ba39a419d6d4d66ccf

ext2: Restrict range of First_Data_Block

src/filo-fs-ext2.adb

diff --git a/src/filo-fs-ext2.adb b/src/filo-fs-ext2.adb
index c7ea867..0d3df60 100644
--- a/src/filo-fs-ext2.adb
+++ b/src/filo-fs-ext2.adb
@@ -58,7 +58,7 @@
       end if;
 
       Static.Part_Len := Part_Len;
-      Static.First_Data_Block := FSBlock_Offset (Read_LE32 (Super_Block, 5 * 4));
+      Static.First_Data_Block := Read_LE32 (Super_Block, 5 * 4);
 
       declare
          S_Log_Block_Size : constant Unsigned_32 := Read_LE32 (Super_Block, 6 * 4);
@@ -678,7 +678,7 @@
 
       Group : constant Group_Index := Group_Index ((Inode - 1) / Static.Inodes_Per_Group);
       Desc_Block : constant FSBlock_Offset :=
-         1 + Static.First_Data_Block + FSBlock_Offset (Group / Static.Desc_Per_Block);
+         1 + FSBlock_Offset (Static.First_Data_Block) + FSBlock_Offset (Group / Static.Desc_Per_Block);
       Cache_Start, Cache_End : Max_Block_Index;
    begin
       Cache_FSBlock