DOS ain't dead - Patch for DOSLFN 0.40e

Patch for DOSLFN 0.40e (Users)

posted by Japheth , Germany (South), 03.09.2011, 08:18

Hello,

as some of you are probably aware of, DOSLFN 0.40e from Jason Hood has (a) serious bug(s) that may cause corruption of directory entries.

I was able to track (one of) the bug(s) down. After the bug was fixed, I didn't experience corruptions anymore as of yet, but there is no guarantee. That's why I post the fix here: you should try it and report your experiences.

Also, the fix is for the source code only, because DOSLFN is copyrighted software - you will have to assemble and link the source.

1. change DOSLFN.ASM
@@pop_open_only: pop ax if 1 ;--- japheth: BX is not set to a DIRENT here! ;--- so we cant copy anything to/from [bx] as it's done below. call Copy_FCB_8P3_from_FCB_to_DI jmp SFN_6C_CallOld ;just call old int 21h, ax=6c00h endif @@open_only:

2. assemble and link DOSLFN.ASM to DOSLFN.COM:
tasm -m5 -la doslfn.asm tlink -3 -t -s doslfn.obj

---
MS-DOS forever!

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Complete thread:

Patch for DOSLFN 0.40e - Japheth, 03.09.2011, 08:18 (Users)
- Patch for DOSLFN 0.40e - ecm, 03.09.2011, 15:24
- Patch for DOSLFN 0.40e - Rugxulo, 03.09.2011, 21:53
  - Patch for DOSLFN 0.40e - Rugxulo, 03.09.2011, 23:31
    - Patch for DOSLFN 0.40e - Japheth, 04.09.2011, 03:14
      - Patch for DOSLFN 0.40e | INT $21 / AX=$71A6 (GFIBH) - DOS386, 04.09.2011, 12:52
        Patch for DOSLFN 0.40e | INT $21 / AX=$71A6 (GFIBH) - Laaca, 11.09.2011, 22:19
        Patch for DOSLFN 0.40e | INT $21 / AX=$71A6 (GFIBH) - RayeR, 12.09.2011, 13:51
        Patch for DOSLFN 0.40e (Japheth) - Rugxulo, 17.09.2011, 20:02
        Patch for DOSLFN 0.40e (Japheth) - RayeR, 19.09.2011, 15:18
        Patch for DOSLFN 0.40e (Japheth) - tikbalang, 19.09.2011, 16:08
        Patch for DOSLFN 0.40e (Japheth) - tikbalang, 19.09.2011, 16:26
        Patch for DOSLFN 0.40e (Japheth) - Rugxulo, 19.09.2011, 23:22
      - Patch for DGJPP 2.04 - DOS386, 06.09.2011, 06:23