Changeset 217

Timestamp:

Nov 9, 2017, 11:25:47 PM (8 years ago)

Author:

Ben Rietbroek

Message:

Skip disks with a LUKS Signature [v1.1.3-testing]

This is a quick-n-dirty hack to skip LUKS encrypted disks.
LUKS disks are not truly recognized and this hack has the semantics of
the disk having no partitions.

CAUTION:
This is a testbuild !
AirBoot uses the BIOS to access disks and a small coding error can trash
partition tables or other vital disk structures. You are advised to make
backups of TRACK0 and EBRs before using this testbuild. More info at:
​https://rousseaux.github.io/netlabs.air-boot/pdf/AirBoot-v1.1.2-manual.pdf

File:

• trunk/bootcode/regular/driveio.asm (modified) (1 diff)

trunk/bootcode/regular/driveio.asm

@@ -327 +327 @@
         jz      DIOLP_Success
 
+        ; ---------------------------------------------------- [Check for LUKS]
+        ; Check for LUKS signature
+        ; If the LUKS signature is foud, set CY and exit to indicate no
+        ; are found partitions. This prevents LUKS disks from appearing in the
+        ; menu in the off chance the luks-sector has a 0xaa55 at offset 0x01fe.
+        cmp     word ptr [si+00h], 554ch    ; 'LU'
+        jne     @F
+        cmp     word ptr [si+02h], 534bh    ; 'KS'
+        stc
+        jz      DIOLP_Success
+
+    @@:
         clc
         cmp     wptr [si+LocBR_Magic], 0AA55h