[PATCH] sfdisk: allow partitioning drives of over 2^31 sectors.

[LaMont Jones]

The attached patch makes it so that sfdisk works on disks with lots and
lots of sectors.  Originally authored by Kunihiko IMAI
<[EMAIL PROTECTED]>, see http://bugs.debian.org/314413

lamont

>From 05b04cf2c5237e299c959d59730648f711faf373 Mon Sep 17 00:00:00 2001
From: Kunihiko IMAI <[EMAIL PROTECTED]>
Date: Sun, 19 Aug 2007 12:28:37 -0600
Subject: [PATCH] sfdisk: allow partitioning drives of over 2^31 sectors.

sfdisk would incorrectly complain that there was no room when partitioning
a drive over 2^31 sectors in size.

Signed-off-by: LaMont Jones <[EMAIL PROTECTED]>
---
 fdisk/sfdisk.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/fdisk/sfdisk.c b/fdisk/sfdisk.c
index 29f66cc..1241f66 100644
--- a/fdisk/sfdisk.c
+++ b/fdisk/sfdisk.c
@@ -1925,11 +1925,12 @@ compute_start_sect(struct part_desc *p, struct 
part_desc *ep) {
       delta = 0;
 
     if (delta < 0) {
+       unsigned long old_size = p->size;
        p->start -= delta;
        p->size += delta;
        if (is_extended(p->p.sys_type) && boxes == ONESECTOR)
          p->size = inc;
-       else if ((int)(p->size) <= 0) {
+       else if (old_size <= -delta) {
            warn(_("no room for partition descriptor\n"));
            return 0;
        }
-- 
1.5.2.3