From cf0ad320e41653772a3d2b018a8cd8ac60751e82 Mon Sep 17 00:00:00 2001
From: Warner Losh <imp@FreeBSD.org>
Date: Thu, 2 Jul 1998 05:12:53 +0000
Subject: [PATCH] o fix bug in conversion of DOS 32-bit signed number to
 FreeBSD's 64-bit   off_t.

This fixed the primitive 'copy protection' that the program I'm using.
---
 usr.bin/doscmd/dos.c   | 4 ++--
 usr.bin/doscmd/intff.c | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/usr.bin/doscmd/dos.c b/usr.bin/doscmd/dos.c
index 88d2b70edcb1..7d79c2faabac 100644
--- a/usr.bin/doscmd/dos.c
+++ b/usr.bin/doscmd/dos.c
@@ -31,7 +31,7 @@
  *
  *	BSDI int21.c,v 2.2 1996/04/08 19:32:51 bostic Exp
  *
- * $Id: dos.c,v 1.1 1997/08/09 01:42:40 dyson Exp $
+ * $Id: dos.c,v 1.2 1998/07/01 19:56:13 imp Exp $
  */
 
 #include "doscmd.h"
@@ -1345,7 +1345,7 @@ int21_42(regcontext_t *REGS)
     int		whence;
     off_t	offset;
     
-    offset = ((off_t)R_CX << 16) + R_DX;
+    offset = (off_t) ((int) (R_CX << 16) + R_DX);
     switch (R_AL) {
     case 0:
 	whence = SEEK_SET;
diff --git a/usr.bin/doscmd/intff.c b/usr.bin/doscmd/intff.c
index 5035a1ff5859..ae86ac526d11 100644
--- a/usr.bin/doscmd/intff.c
+++ b/usr.bin/doscmd/intff.c
@@ -29,7 +29,7 @@
  *
  *	BSDI intff.c,v 2.2 1996/04/08 19:32:56 bostic Exp
  *
- * $Id: intff.c,v 1.2 1997/09/30 22:03:57 jlemon Exp $
+ * $Id: intff.c,v 1.3 1998/07/01 19:56:17 imp Exp $
  */
 
 #include "doscmd.h"
@@ -450,7 +450,7 @@ int2f11_lseek(regcontext_t *REGS)
     off_t	offset;
 
     fd = r_sft->fd;
-    offset = (R_CX << 16) + R_DX;
+    offset = (off_t) ((int) ((R_CX << 16) + R_DX);
     
     debug(D_REDIR,"lseek(%d, 0x%qx, SEEK_END)\n", fd, offset);