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Mon, 19 Aug 2019 18:56:10 +0000 (UTC) Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH v2 02/16] qcow2: Use endof() X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kevin Wolf , qemu-devel@nongnu.org, Max Reitz Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Type: text/plain; charset="utf-8" Signed-off-by: Max Reitz Reviewed-by: Eric Blake --- block/qcow2-snapshot.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/block/qcow2-snapshot.c b/block/qcow2-snapshot.c index d0e7fa9311..752883e5c3 100644 --- a/block/qcow2-snapshot.c +++ b/block/qcow2-snapshot.c @@ -92,11 +92,12 @@ int qcow2_read_snapshots(BlockDriverState *bs) } offset +=3D extra_data_size; =20 - if (extra_data_size >=3D 8) { + if (extra_data_size >=3D endof(QCowSnapshotExtraData, + vm_state_size_large)) { sn->vm_state_size =3D be64_to_cpu(extra.vm_state_size_large); } =20 - if (extra_data_size >=3D 16) { + if (extra_data_size >=3D endof(QCowSnapshotExtraData, disk_size)) { sn->disk_size =3D be64_to_cpu(extra.disk_size); } else { sn->disk_size =3D bs->total_sectors * BDRV_SECTOR_SIZE; @@ -251,7 +252,7 @@ static int qcow2_write_snapshots(BlockDriverState *bs) } =20 QEMU_BUILD_BUG_ON(offsetof(QCowHeader, snapshots_offset) !=3D - offsetof(QCowHeader, nb_snapshots) + sizeof(header_data.nb_snapsho= ts)); + endof(QCowHeader, nb_snapshots)); =20 header_data.nb_snapshots =3D cpu_to_be32(s->nb_snapshots); header_data.snapshots_offset =3D cpu_to_be64(snapshots_offset); --=20 2.21.0