[Xen-devel] [PATCH] tapdisk: Fix qcow2 for images > 2 GB

[Kevin Wolf <kwolf@xxxxxxx>]

tapdisk: Fix qcow2 for images > 2 GB

Signed-off-by: Kevin Wolf <kwolf@xxxxxxx>

Index: xen-3.3.0-testing/tools/blktap/drivers/block-qcow2.c
===================================================================
--- xen-3.3.0-testing.orig/tools/blktap/drivers/block-qcow2.c
+++ xen-3.3.0-testing/tools/blktap/drivers/block-qcow2.c
@@ -254,10 +254,7 @@ static int bdrv_pread(int fd, int64_t of
  */
 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;
        }

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