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[Qemu-block] [PATCH 02/54] qcow2: Use BB for resizing in qcow2_amend_opt
From: |
Kevin Wolf |
Subject: |
[Qemu-block] [PATCH 02/54] qcow2: Use BB for resizing in qcow2_amend_options() |
Date: |
Tue, 21 Feb 2017 15:57:58 +0100 |
In order to able to conver bdrv_truncate() to take a BdrvChild and
later to correctly check the resize permission here, we need to use a
BlockBackend for resizing the image.
Signed-off-by: Kevin Wolf <address@hidden>
---
block/qcow2.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/block/qcow2.c b/block/qcow2.c
index 3e274bd..254545a 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -3250,7 +3250,11 @@ static int qcow2_amend_options(BlockDriverState *bs,
QemuOpts *opts,
}
if (new_size) {
- ret = bdrv_truncate(bs, new_size);
+ BlockBackend *blk = blk_new();
+ blk_insert_bs(blk, bs);
+ ret = blk_truncate(blk, new_size);
+ blk_unref(blk);
+
if (ret < 0) {
return ret;
}
--
1.8.3.1