mirror of
https://gitlab.com/libvirt/libvirt.git
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1f43aa67c5
These flags to APIs will tell if caller wants to use sparse stream for storage transfer. At the same time, it's safe to enable them in storage driver frontend and rely on our backends checking the flags. This way we can enable specific flags only on some specific backends, e.g. enable VIR_STORAGE_VOL_DOWNLOAD_SPARSE_STREAM for filesystem backend but not iSCSI backend. Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
496 lines
21 KiB
C
496 lines
21 KiB
C
/*
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* libvirt-storage.h
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* Summary: APIs for management of storage pools and volumes
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* Description: Provides APIs for the management of storage pools and volumes
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* Author: Daniel Veillard <veillard@redhat.com>
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*
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* Copyright (C) 2006-2016 Red Hat, Inc.
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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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#ifndef __VIR_LIBVIRT_STORAGE_H__
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# define __VIR_LIBVIRT_STORAGE_H__
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# ifndef __VIR_LIBVIRT_H_INCLUDES__
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# error "Don't include this file directly, only use libvirt/libvirt.h"
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# endif
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/**
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* virStoragePool:
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*
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* a virStoragePool is a private structure representing a storage pool
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*/
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typedef struct _virStoragePool virStoragePool;
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/**
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* virStoragePoolPtr:
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*
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* a virStoragePoolPtr is pointer to a virStoragePool private structure, this is the
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* type used to reference a storage pool in the API.
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*/
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typedef virStoragePool *virStoragePoolPtr;
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typedef enum {
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VIR_STORAGE_POOL_INACTIVE = 0, /* Not running */
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VIR_STORAGE_POOL_BUILDING = 1, /* Initializing pool, not available */
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VIR_STORAGE_POOL_RUNNING = 2, /* Running normally */
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VIR_STORAGE_POOL_DEGRADED = 3, /* Running degraded */
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VIR_STORAGE_POOL_INACCESSIBLE = 4, /* Running, but not accessible */
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# ifdef VIR_ENUM_SENTINELS
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VIR_STORAGE_POOL_STATE_LAST
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# endif
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} virStoragePoolState;
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typedef enum {
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VIR_STORAGE_POOL_BUILD_NEW = 0, /* Regular build from scratch */
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VIR_STORAGE_POOL_BUILD_REPAIR = (1 << 0), /* Repair / reinitialize */
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VIR_STORAGE_POOL_BUILD_RESIZE = (1 << 1), /* Extend existing pool */
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VIR_STORAGE_POOL_BUILD_NO_OVERWRITE = (1 << 2), /* Do not overwrite existing pool */
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VIR_STORAGE_POOL_BUILD_OVERWRITE = (1 << 3), /* Overwrite data */
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} virStoragePoolBuildFlags;
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typedef enum {
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VIR_STORAGE_POOL_DELETE_NORMAL = 0, /* Delete metadata only (fast) */
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VIR_STORAGE_POOL_DELETE_ZEROED = 1 << 0, /* Clear all data to zeros (slow) */
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} virStoragePoolDeleteFlags;
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typedef enum {
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VIR_STORAGE_POOL_CREATE_NORMAL = 0,
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/* Create the pool and perform pool build without any flags */
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VIR_STORAGE_POOL_CREATE_WITH_BUILD = 1 << 0,
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/* Create the pool and perform pool build using the
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* VIR_STORAGE_POOL_BUILD_OVERWRITE flag. This is mutually
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* exclusive to VIR_STORAGE_POOL_CREATE_WITH_BUILD_NO_OVERWRITE */
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VIR_STORAGE_POOL_CREATE_WITH_BUILD_OVERWRITE = 1 << 1,
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/* Create the pool and perform pool build using the
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* VIR_STORAGE_POOL_BUILD_NO_OVERWRITE flag. This is mutually
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* exclusive to VIR_STORAGE_POOL_CREATE_WITH_BUILD_OVERWRITE */
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VIR_STORAGE_POOL_CREATE_WITH_BUILD_NO_OVERWRITE = 1 << 2,
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} virStoragePoolCreateFlags;
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typedef struct _virStoragePoolInfo virStoragePoolInfo;
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struct _virStoragePoolInfo {
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int state; /* virStoragePoolState flags */
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unsigned long long capacity; /* Logical size bytes */
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unsigned long long allocation; /* Current allocation bytes */
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unsigned long long available; /* Remaining free space bytes */
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};
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typedef virStoragePoolInfo *virStoragePoolInfoPtr;
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/**
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* virStorageVol:
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*
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* a virStorageVol is a private structure representing a storage volume
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*/
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typedef struct _virStorageVol virStorageVol;
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/**
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* virStorageVolPtr:
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*
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* a virStorageVolPtr is pointer to a virStorageVol private structure, this is the
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* type used to reference a storage volume in the API.
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*/
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typedef virStorageVol *virStorageVolPtr;
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typedef enum {
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VIR_STORAGE_VOL_FILE = 0, /* Regular file based volumes */
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VIR_STORAGE_VOL_BLOCK = 1, /* Block based volumes */
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VIR_STORAGE_VOL_DIR = 2, /* Directory-passthrough based volume */
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VIR_STORAGE_VOL_NETWORK = 3, /* Network volumes like RBD (RADOS Block Device) */
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VIR_STORAGE_VOL_NETDIR = 4, /* Network accessible directory that can
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* contain other network volumes */
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VIR_STORAGE_VOL_PLOOP = 5, /* Ploop based volumes */
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# ifdef VIR_ENUM_SENTINELS
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VIR_STORAGE_VOL_LAST
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# endif
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} virStorageVolType;
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typedef enum {
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VIR_STORAGE_VOL_DELETE_NORMAL = 0, /* Delete metadata only (fast) */
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VIR_STORAGE_VOL_DELETE_ZEROED = 1 << 0, /* Clear all data to zeros (slow) */
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VIR_STORAGE_VOL_DELETE_WITH_SNAPSHOTS = 1 << 1, /* Force removal of volume, even if in use */
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} virStorageVolDeleteFlags;
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typedef enum {
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VIR_STORAGE_VOL_WIPE_ALG_ZERO = 0, /* 1-pass, all zeroes */
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VIR_STORAGE_VOL_WIPE_ALG_NNSA = 1, /* 4-pass NNSA Policy Letter
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NAP-14.1-C (XVI-8) */
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VIR_STORAGE_VOL_WIPE_ALG_DOD = 2, /* 4-pass DoD 5220.22-M section
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8-306 procedure */
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VIR_STORAGE_VOL_WIPE_ALG_BSI = 3, /* 9-pass method recommended by the
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German Center of Security in
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Information Technologies */
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VIR_STORAGE_VOL_WIPE_ALG_GUTMANN = 4, /* The canonical 35-pass sequence */
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VIR_STORAGE_VOL_WIPE_ALG_SCHNEIER = 5, /* 7-pass method described by
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Bruce Schneier in "Applied
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Cryptography" (1996) */
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VIR_STORAGE_VOL_WIPE_ALG_PFITZNER7 = 6, /* 7-pass random */
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VIR_STORAGE_VOL_WIPE_ALG_PFITZNER33 = 7, /* 33-pass random */
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VIR_STORAGE_VOL_WIPE_ALG_RANDOM = 8, /* 1-pass random */
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VIR_STORAGE_VOL_WIPE_ALG_TRIM = 9, /* 1-pass, trim all data on the
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volume by using TRIM or DISCARD */
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# ifdef VIR_ENUM_SENTINELS
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VIR_STORAGE_VOL_WIPE_ALG_LAST
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/*
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* NB: this enum value will increase over time as new algorithms are
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* added to the libvirt API. It reflects the last algorithm supported
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* by this version of the libvirt API.
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*/
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# endif
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} virStorageVolWipeAlgorithm;
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typedef enum {
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VIR_STORAGE_VOL_USE_ALLOCATION = 0,
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/* Return the physical size in allocation */
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VIR_STORAGE_VOL_GET_PHYSICAL = 1 << 0,
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} virStorageVolInfoFlags;
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typedef struct _virStorageVolInfo virStorageVolInfo;
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struct _virStorageVolInfo {
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int type; /* virStorageVolType flags */
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unsigned long long capacity; /* Logical size bytes */
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unsigned long long allocation; /* Current allocation bytes */
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};
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typedef virStorageVolInfo *virStorageVolInfoPtr;
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typedef enum {
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VIR_STORAGE_XML_INACTIVE = (1 << 0), /* dump inactive pool/volume information */
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} virStorageXMLFlags;
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/*
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* Get connection from pool.
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*/
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virConnectPtr virStoragePoolGetConnect (virStoragePoolPtr pool);
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/*
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* List active storage pools
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*/
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int virConnectNumOfStoragePools (virConnectPtr conn);
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int virConnectListStoragePools (virConnectPtr conn,
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char **const names,
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int maxnames);
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/*
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* List inactive storage pools
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*/
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int virConnectNumOfDefinedStoragePools(virConnectPtr conn);
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int virConnectListDefinedStoragePools(virConnectPtr conn,
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char **const names,
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int maxnames);
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/*
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* virConnectListAllStoragePoolsFlags:
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*
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* Flags used to tune pools returned by virConnectListAllStoragePools().
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* Note that these flags come in groups; if all bits from a group are 0,
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* then that group is not used to filter results.
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*/
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typedef enum {
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VIR_CONNECT_LIST_STORAGE_POOLS_INACTIVE = 1 << 0,
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VIR_CONNECT_LIST_STORAGE_POOLS_ACTIVE = 1 << 1,
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VIR_CONNECT_LIST_STORAGE_POOLS_PERSISTENT = 1 << 2,
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VIR_CONNECT_LIST_STORAGE_POOLS_TRANSIENT = 1 << 3,
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VIR_CONNECT_LIST_STORAGE_POOLS_AUTOSTART = 1 << 4,
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VIR_CONNECT_LIST_STORAGE_POOLS_NO_AUTOSTART = 1 << 5,
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/* List pools by type */
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VIR_CONNECT_LIST_STORAGE_POOLS_DIR = 1 << 6,
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VIR_CONNECT_LIST_STORAGE_POOLS_FS = 1 << 7,
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VIR_CONNECT_LIST_STORAGE_POOLS_NETFS = 1 << 8,
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VIR_CONNECT_LIST_STORAGE_POOLS_LOGICAL = 1 << 9,
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VIR_CONNECT_LIST_STORAGE_POOLS_DISK = 1 << 10,
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VIR_CONNECT_LIST_STORAGE_POOLS_ISCSI = 1 << 11,
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VIR_CONNECT_LIST_STORAGE_POOLS_SCSI = 1 << 12,
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VIR_CONNECT_LIST_STORAGE_POOLS_MPATH = 1 << 13,
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VIR_CONNECT_LIST_STORAGE_POOLS_RBD = 1 << 14,
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VIR_CONNECT_LIST_STORAGE_POOLS_SHEEPDOG = 1 << 15,
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VIR_CONNECT_LIST_STORAGE_POOLS_GLUSTER = 1 << 16,
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VIR_CONNECT_LIST_STORAGE_POOLS_ZFS = 1 << 17,
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VIR_CONNECT_LIST_STORAGE_POOLS_VSTORAGE = 1 << 18,
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} virConnectListAllStoragePoolsFlags;
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int virConnectListAllStoragePools(virConnectPtr conn,
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virStoragePoolPtr **pools,
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unsigned int flags);
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/*
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* Query a host for storage pools of a particular type
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*/
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char * virConnectFindStoragePoolSources(virConnectPtr conn,
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const char *type,
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const char *srcSpec,
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unsigned int flags);
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/*
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* Lookup pool by name or uuid
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*/
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virStoragePoolPtr virStoragePoolLookupByName (virConnectPtr conn,
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const char *name);
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virStoragePoolPtr virStoragePoolLookupByUUID (virConnectPtr conn,
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const unsigned char *uuid);
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virStoragePoolPtr virStoragePoolLookupByUUIDString(virConnectPtr conn,
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const char *uuid);
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virStoragePoolPtr virStoragePoolLookupByVolume (virStorageVolPtr vol);
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/*
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* Creating/destroying pools
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*/
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virStoragePoolPtr virStoragePoolCreateXML (virConnectPtr conn,
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const char *xmlDesc,
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unsigned int flags);
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virStoragePoolPtr virStoragePoolDefineXML (virConnectPtr conn,
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const char *xmlDesc,
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unsigned int flags);
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int virStoragePoolBuild (virStoragePoolPtr pool,
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unsigned int flags);
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int virStoragePoolUndefine (virStoragePoolPtr pool);
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int virStoragePoolCreate (virStoragePoolPtr pool,
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unsigned int flags);
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int virStoragePoolDestroy (virStoragePoolPtr pool);
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int virStoragePoolDelete (virStoragePoolPtr pool,
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unsigned int flags);
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int virStoragePoolRef (virStoragePoolPtr pool);
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int virStoragePoolFree (virStoragePoolPtr pool);
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int virStoragePoolRefresh (virStoragePoolPtr pool,
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unsigned int flags);
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/*
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* StoragePool information
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*/
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const char* virStoragePoolGetName (virStoragePoolPtr pool);
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int virStoragePoolGetUUID (virStoragePoolPtr pool,
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unsigned char *uuid);
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int virStoragePoolGetUUIDString (virStoragePoolPtr pool,
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char *buf);
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int virStoragePoolGetInfo (virStoragePoolPtr vol,
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virStoragePoolInfoPtr info);
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char * virStoragePoolGetXMLDesc (virStoragePoolPtr pool,
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unsigned int flags);
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int virStoragePoolGetAutostart (virStoragePoolPtr pool,
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int *autostart);
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int virStoragePoolSetAutostart (virStoragePoolPtr pool,
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int autostart);
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/*
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* List/lookup storage volumes within a pool
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*/
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int virStoragePoolNumOfVolumes (virStoragePoolPtr pool);
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int virStoragePoolListVolumes (virStoragePoolPtr pool,
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char **const names,
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int maxnames);
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int virStoragePoolListAllVolumes (virStoragePoolPtr pool,
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virStorageVolPtr **vols,
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unsigned int flags);
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virConnectPtr virStorageVolGetConnect (virStorageVolPtr vol);
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/*
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* Lookup volumes based on various attributes
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*/
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virStorageVolPtr virStorageVolLookupByName (virStoragePoolPtr pool,
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const char *name);
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virStorageVolPtr virStorageVolLookupByKey (virConnectPtr conn,
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const char *key);
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virStorageVolPtr virStorageVolLookupByPath (virConnectPtr conn,
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const char *path);
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const char* virStorageVolGetName (virStorageVolPtr vol);
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const char* virStorageVolGetKey (virStorageVolPtr vol);
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typedef enum {
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VIR_STORAGE_VOL_CREATE_PREALLOC_METADATA = 1 << 0,
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VIR_STORAGE_VOL_CREATE_REFLINK = 1 << 1, /* perform a btrfs lightweight copy */
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} virStorageVolCreateFlags;
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virStorageVolPtr virStorageVolCreateXML (virStoragePoolPtr pool,
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const char *xmldesc,
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unsigned int flags);
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virStorageVolPtr virStorageVolCreateXMLFrom (virStoragePoolPtr pool,
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const char *xmldesc,
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virStorageVolPtr clonevol,
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unsigned int flags);
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typedef enum {
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VIR_STORAGE_VOL_DOWNLOAD_SPARSE_STREAM = 1 << 0, /* Use sparse stream */
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} virStorageVolDownloadFlags;
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int virStorageVolDownload (virStorageVolPtr vol,
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virStreamPtr stream,
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unsigned long long offset,
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unsigned long long length,
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unsigned int flags);
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typedef enum {
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VIR_STORAGE_VOL_UPLOAD_SPARSE_STREAM = 1 << 0, /* Use sparse stream */
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} virStorageVolUploadFlags;
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int virStorageVolUpload (virStorageVolPtr vol,
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virStreamPtr stream,
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unsigned long long offset,
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unsigned long long length,
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unsigned int flags);
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int virStorageVolDelete (virStorageVolPtr vol,
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unsigned int flags);
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int virStorageVolWipe (virStorageVolPtr vol,
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unsigned int flags);
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int virStorageVolWipePattern (virStorageVolPtr vol,
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unsigned int algorithm,
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unsigned int flags);
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int virStorageVolRef (virStorageVolPtr vol);
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int virStorageVolFree (virStorageVolPtr vol);
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int virStorageVolGetInfo (virStorageVolPtr vol,
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virStorageVolInfoPtr info);
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int virStorageVolGetInfoFlags (virStorageVolPtr vol,
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virStorageVolInfoPtr info,
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unsigned int flags);
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char * virStorageVolGetXMLDesc (virStorageVolPtr pool,
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unsigned int flags);
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char * virStorageVolGetPath (virStorageVolPtr vol);
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typedef enum {
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VIR_STORAGE_VOL_RESIZE_ALLOCATE = 1 << 0, /* force allocation of new size */
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VIR_STORAGE_VOL_RESIZE_DELTA = 1 << 1, /* size is relative to current */
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VIR_STORAGE_VOL_RESIZE_SHRINK = 1 << 2, /* allow decrease in capacity */
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} virStorageVolResizeFlags;
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int virStorageVolResize (virStorageVolPtr vol,
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unsigned long long capacity,
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unsigned int flags);
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int virStoragePoolIsActive(virStoragePoolPtr pool);
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int virStoragePoolIsPersistent(virStoragePoolPtr pool);
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/**
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* VIR_STORAGE_POOL_EVENT_CALLBACK:
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*
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* Used to cast the event specific callback into the generic one
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* for use for virConnectStoragePoolEventRegisterAny()
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*/
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# define VIR_STORAGE_POOL_EVENT_CALLBACK(cb)((virConnectStoragePoolEventGenericCallback)(cb))
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/**
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* virStoragePoolEventID:
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*
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* An enumeration of supported eventId parameters for
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* virConnectStoragePoolEventRegisterAny(). Each event id determines which
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* signature of callback function will be used.
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*/
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typedef enum {
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VIR_STORAGE_POOL_EVENT_ID_LIFECYCLE = 0, /* virConnectStoragePoolEventLifecycleCallback */
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VIR_STORAGE_POOL_EVENT_ID_REFRESH = 1, /* virConnectStoragePoolEventGenericCallback */
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# ifdef VIR_ENUM_SENTINELS
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VIR_STORAGE_POOL_EVENT_ID_LAST
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/*
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* NB: this enum value will increase over time as new events are
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* added to the libvirt API. It reflects the last event ID supported
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* by this version of the libvirt API.
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*/
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# endif
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} virStoragePoolEventID;
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/**
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* virConnectStoragePoolEventGenericCallback:
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* @conn: the connection pointer
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* @pool: the pool pointer
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* @opaque: application specified data
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*
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* A generic storage pool event callback handler, for use with
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* virConnectStoragePoolEventRegisterAny(). Specific events usually
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* have a customization with extra parameters, often with @opaque being
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* passed in a different parameter position; use
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* VIR_STORAGE_POOL_EVENT_CALLBACK() when registering an appropriate handler.
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*/
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typedef void (*virConnectStoragePoolEventGenericCallback)(virConnectPtr conn,
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virStoragePoolPtr pool,
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void *opaque);
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/* Use VIR_STORAGE_POOL_EVENT_CALLBACK() to cast the 'cb' parameter */
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int virConnectStoragePoolEventRegisterAny(virConnectPtr conn,
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virStoragePoolPtr pool, /* optional, to filter */
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int eventID,
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virConnectStoragePoolEventGenericCallback cb,
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void *opaque,
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virFreeCallback freecb);
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int virConnectStoragePoolEventDeregisterAny(virConnectPtr conn,
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int callbackID);
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/**
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* virStoragePoolEventLifecycleType:
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*
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* a virStoragePoolEventLifecycleType is emitted during storage pool
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* lifecycle events
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*/
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typedef enum {
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VIR_STORAGE_POOL_EVENT_DEFINED = 0,
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VIR_STORAGE_POOL_EVENT_UNDEFINED = 1,
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VIR_STORAGE_POOL_EVENT_STARTED = 2,
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VIR_STORAGE_POOL_EVENT_STOPPED = 3,
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# ifdef VIR_ENUM_SENTINELS
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VIR_STORAGE_POOL_EVENT_LAST
|
|
# endif
|
|
} virStoragePoolEventLifecycleType;
|
|
|
|
/**
|
|
* virConnectStoragePoolEventLifecycleCallback:
|
|
* @conn: connection object
|
|
* @pool: pool on which the event occurred
|
|
* @event: The specific virStoragePoolEventLifeCycleType which occurred
|
|
* @detail: contains some details on the reason of the event.
|
|
* @opaque: application specified data
|
|
*
|
|
* This callback is called when a pool lifecycle action is performed, like start
|
|
* or stop.
|
|
*
|
|
* The callback signature to use when registering for an event of type
|
|
* VIR_STORAGE_POOL_EVENT_ID_LIFECYCLE with
|
|
* virConnectStoragePoolEventRegisterAny()
|
|
*/
|
|
typedef void (*virConnectStoragePoolEventLifecycleCallback)(virConnectPtr conn,
|
|
virStoragePoolPtr pool,
|
|
int event,
|
|
int detail,
|
|
void *opaque);
|
|
|
|
#endif /* __VIR_LIBVIRT_STORAGE_H__ */
|