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243 lines
8.6 KiB
C
243 lines
8.6 KiB
C
/*
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* datatypes.h: management of structs for public data types
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*
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* Copyright (C) 2006-2008 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, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#ifndef __VIRT_DATATYPES_H_
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#define __VIRT_DATATYPES_H_
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#include "internal.h"
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#include "hash.h"
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#include "driver.h"
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#include "threads.h"
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/**
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* VIR_CONNECT_MAGIC:
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*
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* magic value used to protect the API when pointers to connection structures
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* are passed down by the uers.
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*/
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#define VIR_CONNECT_MAGIC 0x4F23DEAD
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#define VIR_IS_CONNECT(obj) ((obj) && (obj)->magic==VIR_CONNECT_MAGIC)
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/**
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* VIR_DOMAIN_MAGIC:
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*
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* magic value used to protect the API when pointers to domain structures
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* are passed down by the users.
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*/
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#define VIR_DOMAIN_MAGIC 0xDEAD4321
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#define VIR_IS_DOMAIN(obj) ((obj) && (obj)->magic==VIR_DOMAIN_MAGIC)
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#define VIR_IS_CONNECTED_DOMAIN(obj) (VIR_IS_DOMAIN(obj) && VIR_IS_CONNECT((obj)->conn))
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/**
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* VIR_NETWORK_MAGIC:
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*
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* magic value used to protect the API when pointers to network structures
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* are passed down by the users.
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*/
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#define VIR_NETWORK_MAGIC 0xDEAD1234
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#define VIR_IS_NETWORK(obj) ((obj) && (obj)->magic==VIR_NETWORK_MAGIC)
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#define VIR_IS_CONNECTED_NETWORK(obj) (VIR_IS_NETWORK(obj) && VIR_IS_CONNECT((obj)->conn))
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/**
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* VIR_STORAGE_POOL_MAGIC:
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*
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* magic value used to protect the API when pointers to storage pool structures
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* are passed down by the users.
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*/
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#define VIR_STORAGE_POOL_MAGIC 0xDEAD5678
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#define VIR_IS_STORAGE_POOL(obj) ((obj) && (obj)->magic==VIR_STORAGE_POOL_MAGIC)
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#define VIR_IS_CONNECTED_STORAGE_POOL(obj) (VIR_IS_STORAGE_POOL(obj) && VIR_IS_CONNECT((obj)->conn))
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/**
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* VIR_STORAGE_VOL_MAGIC:
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*
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* magic value used to protect the API when pointers to storage vol structures
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* are passed down by the users.
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*/
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#define VIR_STORAGE_VOL_MAGIC 0xDEAD8765
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#define VIR_IS_STORAGE_VOL(obj) ((obj) && (obj)->magic==VIR_STORAGE_VOL_MAGIC)
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#define VIR_IS_CONNECTED_STORAGE_VOL(obj) (VIR_IS_STORAGE_VOL(obj) && VIR_IS_CONNECT((obj)->conn))
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/**
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* VIR_NODE_DEVICE_MAGIC:
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*
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* magic value used to protect the API when pointers to storage vol structures
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* are passed down by the users.
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*/
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#define VIR_NODE_DEVICE_MAGIC 0xDEAD5679
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#define VIR_IS_NODE_DEVICE(obj) ((obj) && (obj)->magic==VIR_NODE_DEVICE_MAGIC)
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#define VIR_IS_CONNECTED_NODE_DEVICE(obj) (VIR_IS_NODE_DEVICE(obj) && VIR_IS_CONNECT((obj)->conn))
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/**
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* _virConnect:
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*
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* Internal structure associated to a connection
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*/
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struct _virConnect {
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/* All the variables from here, until the 'lock' declaration
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* are setup at time of connection open, and never changed
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* since. Thus no need to lock when accessing them
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*/
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unsigned int magic; /* specific value to check */
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int flags; /* a set of connection flags */
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xmlURIPtr uri; /* connection URI */
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/* The underlying hypervisor driver and network driver. */
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virDriverPtr driver;
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virNetworkDriverPtr networkDriver;
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virStorageDriverPtr storageDriver;
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virDeviceMonitorPtr deviceMonitor;
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/* Private data pointer which can be used by driver and
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* network driver as they wish.
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* NB: 'private' is a reserved word in C++.
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*/
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void * privateData;
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void * networkPrivateData;
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void * storagePrivateData;
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void * devMonPrivateData;
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/*
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* The lock mutex must be acquired before accessing/changing
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* any of members following this point, or changing the ref
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* count of any virDomain/virNetwork object associated with
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* this connection
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*/
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virMutex lock;
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/* Per-connection error. */
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virError err; /* the last error */
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virErrorFunc handler; /* associated handlet */
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void *userData; /* the user data */
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virHashTablePtr domains; /* hash table for known domains */
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virHashTablePtr networks; /* hash table for known domains */
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virHashTablePtr storagePools;/* hash table for known storage pools */
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virHashTablePtr storageVols;/* hash table for known storage vols */
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virHashTablePtr nodeDevices; /* hash table for known node devices */
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int refs; /* reference count */
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};
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/**
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* _virDomain:
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*
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* Internal structure associated to a domain
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*/
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struct _virDomain {
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unsigned int magic; /* specific value to check */
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int refs; /* reference count */
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virConnectPtr conn; /* pointer back to the connection */
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char *name; /* the domain external name */
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int id; /* the domain ID */
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unsigned char uuid[VIR_UUID_BUFLEN]; /* the domain unique identifier */
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};
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/**
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* _virNetwork:
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*
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* Internal structure associated to a domain
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*/
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struct _virNetwork {
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unsigned int magic; /* specific value to check */
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int refs; /* reference count */
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virConnectPtr conn; /* pointer back to the connection */
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char *name; /* the network external name */
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unsigned char uuid[VIR_UUID_BUFLEN]; /* the network unique identifier */
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};
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/**
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* _virStoragePool:
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*
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* Internal structure associated to a storage pool
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*/
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struct _virStoragePool {
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unsigned int magic; /* specific value to check */
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int refs; /* reference count */
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virConnectPtr conn; /* pointer back to the connection */
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char *name; /* the storage pool external name */
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unsigned char uuid[VIR_UUID_BUFLEN]; /* the storage pool unique identifier */
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};
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/**
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* _virStorageVol:
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*
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* Internal structure associated to a storage volume
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*/
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struct _virStorageVol {
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unsigned int magic; /* specific value to check */
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int refs; /* reference count */
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virConnectPtr conn; /* pointer back to the connection */
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char *pool; /* Pool name of owner */
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char *name; /* the storage vol external name */
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/* XXX currently abusing path for this. Ought not to be so evil */
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char key[PATH_MAX]; /* unique key for storage vol */
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};
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/**
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* _virNodeDevice:
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*
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* Internal structure associated with a node device
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*/
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struct _virNodeDevice {
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unsigned int magic; /* specific value to check */
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int refs; /* reference count */
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virConnectPtr conn; /* pointer back to the connection */
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char *name; /* device name (unique on node) */
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char *parent; /* parent device name */
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};
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/************************************************************************
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* *
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* API for domain/connections (de)allocations and lookups *
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* *
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************************************************************************/
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virConnectPtr virGetConnect(void);
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int virUnrefConnect(virConnectPtr conn);
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virDomainPtr virGetDomain(virConnectPtr conn,
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const char *name,
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const unsigned char *uuid);
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int virUnrefDomain(virDomainPtr domain);
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virNetworkPtr virGetNetwork(virConnectPtr conn,
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const char *name,
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const unsigned char *uuid);
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int virUnrefNetwork(virNetworkPtr network);
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virStoragePoolPtr virGetStoragePool(virConnectPtr conn,
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const char *name,
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const unsigned char *uuid);
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int virUnrefStoragePool(virStoragePoolPtr pool);
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virStorageVolPtr virGetStorageVol(virConnectPtr conn,
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const char *pool,
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const char *name,
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const char *key);
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int virUnrefStorageVol(virStorageVolPtr vol);
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virNodeDevicePtr virGetNodeDevice(virConnectPtr conn,
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const char *name);
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int virUnrefNodeDevice(virNodeDevicePtr dev);
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#endif
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