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47a12f2752
In case when the backing store can be represented with something simpler such as a URI we can use it rather than falling back to the json: pseudo-protocol. In cases when it's not worth it (e.g. with the old ugly NBD or RBD strings) let's switch to json. The function is exported as we'll need it when overwriting the ugly strings qemu would come up with during blockjobs. Signed-off-by: Peter Krempa <pkrempa@redhat.com> Reviewed-by: Ján Tomko <jtomko@redhat.com>
185 lines
6.0 KiB
C
185 lines
6.0 KiB
C
/*
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* qemu_block.h: helper functions for QEMU block subsystem
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see
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* <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include "internal.h"
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#include "qemu_conf.h"
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#include "qemu_domain.h"
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#include "virhash.h"
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#include "virjson.h"
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#include "viruri.h"
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typedef struct qemuBlockNodeNameBackingChainData qemuBlockNodeNameBackingChainData;
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typedef qemuBlockNodeNameBackingChainData *qemuBlockNodeNameBackingChainDataPtr;
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struct qemuBlockNodeNameBackingChainData {
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char *qemufilename; /* name of the image from qemu */
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char *nodeformat; /* node name of the format layer */
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char *nodestorage; /* node name of the storage backing the format node */
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qemuBlockNodeNameBackingChainDataPtr backing;
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/* for testing purposes */
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char *drvformat;
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char *drvstorage;
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};
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virHashTablePtr
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qemuBlockNodeNameGetBackingChain(virJSONValuePtr namednodesdata,
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virJSONValuePtr blockstats);
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int
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qemuBlockNodeNamesDetect(virQEMUDriverPtr driver,
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virDomainObjPtr vm,
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qemuDomainAsyncJob asyncJob);
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virHashTablePtr
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qemuBlockGetNodeData(virJSONValuePtr data);
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bool
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qemuBlockStorageSourceSupportsConcurrentAccess(virStorageSourcePtr src);
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virJSONValuePtr
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qemuBlockStorageSourceGetBackendProps(virStorageSourcePtr src,
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bool legacy,
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bool onlytarget,
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bool autoreadonly);
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virURIPtr
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qemuBlockStorageSourceGetURI(virStorageSourcePtr src);
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virJSONValuePtr
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qemuBlockStorageSourceGetBlockdevProps(virStorageSourcePtr src);
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virJSONValuePtr
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qemuBlockStorageGetCopyOnReadProps(virDomainDiskDefPtr disk);
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typedef struct qemuBlockStorageSourceAttachData qemuBlockStorageSourceAttachData;
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typedef qemuBlockStorageSourceAttachData *qemuBlockStorageSourceAttachDataPtr;
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struct qemuBlockStorageSourceAttachData {
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virJSONValuePtr prmgrProps;
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char *prmgrAlias;
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virJSONValuePtr storageProps;
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const char *storageNodeName;
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bool storageAttached;
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virJSONValuePtr formatProps;
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const char *formatNodeName;
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bool formatAttached;
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char *driveCmd;
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char *driveAlias;
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bool driveAdded;
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virJSONValuePtr authsecretProps;
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char *authsecretAlias;
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virJSONValuePtr encryptsecretProps;
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char *encryptsecretAlias;
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virJSONValuePtr tlsProps;
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char *tlsAlias;
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};
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void
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qemuBlockStorageSourceAttachDataFree(qemuBlockStorageSourceAttachDataPtr data);
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VIR_DEFINE_AUTOPTR_FUNC(qemuBlockStorageSourceAttachData,
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qemuBlockStorageSourceAttachDataFree);
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qemuBlockStorageSourceAttachDataPtr
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qemuBlockStorageSourceAttachPrepareBlockdev(virStorageSourcePtr src,
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bool autoreadonly);
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qemuBlockStorageSourceAttachDataPtr
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qemuBlockStorageSourceDetachPrepare(virStorageSourcePtr src,
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char *driveAlias);
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int
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qemuBlockStorageSourceAttachApply(qemuMonitorPtr mon,
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qemuBlockStorageSourceAttachDataPtr data);
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void
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qemuBlockStorageSourceAttachRollback(qemuMonitorPtr mon,
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qemuBlockStorageSourceAttachDataPtr data);
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int
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qemuBlockStorageSourceDetachOneBlockdev(virQEMUDriverPtr driver,
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virDomainObjPtr vm,
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qemuDomainAsyncJob asyncJob,
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virStorageSourcePtr src);
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struct _qemuBlockStorageSourceChainData {
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qemuBlockStorageSourceAttachDataPtr *srcdata;
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size_t nsrcdata;
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};
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typedef struct _qemuBlockStorageSourceChainData qemuBlockStorageSourceChainData;
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typedef qemuBlockStorageSourceChainData *qemuBlockStorageSourceChainDataPtr;
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void
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qemuBlockStorageSourceChainDataFree(qemuBlockStorageSourceChainDataPtr data);
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qemuBlockStorageSourceChainDataPtr
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qemuBlockStorageSourceChainDetachPrepareBlockdev(virStorageSourcePtr src);
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qemuBlockStorageSourceChainDataPtr
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qemuBlockStorageSourceChainDetachPrepareDrive(virStorageSourcePtr src,
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char *driveAlias);
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int
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qemuBlockStorageSourceChainAttach(qemuMonitorPtr mon,
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qemuBlockStorageSourceChainDataPtr data);
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void
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qemuBlockStorageSourceChainDetach(qemuMonitorPtr mon,
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qemuBlockStorageSourceChainDataPtr data);
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VIR_DEFINE_AUTOPTR_FUNC(qemuBlockStorageSourceChainData,
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qemuBlockStorageSourceChainDataFree);
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int
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qemuBlockSnapshotAddLegacy(virJSONValuePtr actions,
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virDomainDiskDefPtr disk,
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virStorageSourcePtr newsrc,
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bool reuse);
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int
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qemuBlockSnapshotAddBlockdev(virJSONValuePtr actions,
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virDomainDiskDefPtr disk,
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virStorageSourcePtr newsrc);
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char *
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qemuBlockGetBackingStoreString(virStorageSourcePtr src)
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ATTRIBUTE_NONNULL(1);
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int
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qemuBlockStorageSourceCreateGetFormatProps(virStorageSourcePtr src,
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virStorageSourcePtr backing,
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virJSONValuePtr *props)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(3) ATTRIBUTE_RETURN_CHECK;
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int
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qemuBlockStorageSourceCreateGetStorageProps(virStorageSourcePtr src,
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virJSONValuePtr *props)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_RETURN_CHECK;
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