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Provide API for the COR-filter removal. Also, drop the filter child permissions for an inactive state when the filter node is being removed. To insert the filter, the block generic layer function bdrv_insert_node() can be used. The new function bdrv_cor_filter_drop() may be considered as an intermediate solution before the QEMU permission update system has overhauled. Then we are able to implement the API function bdrv_remove_node() on the block generic layer. Signed-off-by: Andrey Shinkevich <andrey.shinkevich@virtuozzo.com> Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Message-Id: <20201216061703.70908-4-vsementsov@virtuozzo.com> Signed-off-by: Max Reitz <mreitz@redhat.com>
33 lines
1.0 KiB
C
33 lines
1.0 KiB
C
/*
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* Copy-on-read filter block driver
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*
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* The filter driver performs Copy-On-Read (COR) operations
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*
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* Copyright (c) 2018-2020 Virtuozzo International GmbH.
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*
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* Author:
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* Andrey Shinkevich <andrey.shinkevich@virtuozzo.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef BLOCK_COPY_ON_READ
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#define BLOCK_COPY_ON_READ
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#include "block/block_int.h"
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void bdrv_cor_filter_drop(BlockDriverState *cor_filter_bs);
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#endif /* BLOCK_COPY_ON_READ */
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