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From 2854a11fc02a664688ddc3ccbd7786f0aec219bd Mon Sep 17 00:00:00 2001
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From: Kevin Wolf <kwolf@redhat.com>
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Date: Thu, 12 Jul 2018 14:42:53 +0200
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Subject: [PATCH 34/89] qcow2: Fix qcow2_truncate() error return value
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RH-Author: Kevin Wolf <kwolf@redhat.com>
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Message-id: <20180712144258.17303-2-kwolf@redhat.com>
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Patchwork-id: 81325
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O-Subject: [RHV-7.6 qemu-kvm-rhev PATCH 1/6] qcow2: Fix qcow2_truncate() error return value
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Bugzilla: 1595173
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RH-Acked-by: Max Reitz <mreitz@redhat.com>
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RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
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RH-Acked-by: John Snow <jsnow@redhat.com>
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If qcow2_alloc_clusters_at() returns an error, we do need to negate it
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to get back the positive errno code for error_setg_errno(), but we still
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need to return the negative error code.
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Fixes: 772d1f973f87269f6a4a4ea4b880680f3779bbdf
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Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
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(cherry picked from commit ae5475e82fd1ebb24f4f77cf28f59ca6548c6136)
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Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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block/qcow2.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/block/qcow2.c b/block/qcow2.c
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index da74e2a..dbd448c 100644
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--- a/block/qcow2.c
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+++ b/block/qcow2.c
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@@ -3594,7 +3594,7 @@ static int qcow2_truncate(BlockDriverState *bs, int64_t offset,
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if (clusters_allocated < 0) {
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error_setg_errno(errp, -clusters_allocated,
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"Failed to allocate data clusters");
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- return -clusters_allocated;
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+ return clusters_allocated;
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}
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assert(clusters_allocated == nb_new_data_clusters);
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--
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1.8.3.1
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