From: Keir Fraser <keir.fraser@citrix.com>
Date: Fri, 27 Jun 2008 13:03:52 +0000 (+0100)
Subject: tapdisk: Fix qcow2 for images > 2 GB
X-Git-Tag: archive/raspbian/4.8.0-1+rpi1~1^2~14192^2~30
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=c8af9ce96124f2e71507d5cce038e6984d09c625;p=xen.git

tapdisk: Fix qcow2 for images > 2 GB

Signed-off-by: Kevin Wolf <kwolf@suse.de>
---

diff --git a/tools/blktap/drivers/block-qcow2.c b/tools/blktap/drivers/block-qcow2.c
index e435e6e3aa..fe28a2ecb0 100644
--- a/tools/blktap/drivers/block-qcow2.c
+++ b/tools/blktap/drivers/block-qcow2.c
@@ -254,10 +254,7 @@ static int bdrv_pread(int fd, int64_t offset, void *buf, int count)
  */
 static int bdrv_pwrite(int fd, int64_t offset, const void *buf, int count)
 {
-	int ret;
-	
-	ret = lseek(fd, offset, SEEK_SET);
-	if (ret != offset) {
+	if (lseek(fd, offset, SEEK_SET) == -1) {
 		DPRINTF("bdrv_pwrite failed seek (%#"PRIx64").\n", offset);
 		return -1;
 	}