/* * datatypes.h: management of structs for public data types * * Copyright (C) 2006-2008 Red Hat, Inc. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * */ #ifndef __VIRT_DATATYPES_H_ #define __VIRT_DATATYPES_H_ #include "internal.h" #include "hash.h" #include "driver.h" #include "threads.h" /** * VIR_CONNECT_MAGIC: * * magic value used to protect the API when pointers to connection structures * are passed down by the uers. */ #define VIR_CONNECT_MAGIC 0x4F23DEAD #define VIR_IS_CONNECT(obj) ((obj) && (obj)->magic==VIR_CONNECT_MAGIC) /** * VIR_DOMAIN_MAGIC: * * magic value used to protect the API when pointers to domain structures * are passed down by the users. */ #define VIR_DOMAIN_MAGIC 0xDEAD4321 #define VIR_IS_DOMAIN(obj) ((obj) && (obj)->magic==VIR_DOMAIN_MAGIC) #define VIR_IS_CONNECTED_DOMAIN(obj) (VIR_IS_DOMAIN(obj) && VIR_IS_CONNECT((obj)->conn)) /** * VIR_NETWORK_MAGIC: * * magic value used to protect the API when pointers to network structures * are passed down by the users. */ #define VIR_NETWORK_MAGIC 0xDEAD1234 #define VIR_IS_NETWORK(obj) ((obj) && (obj)->magic==VIR_NETWORK_MAGIC) #define VIR_IS_CONNECTED_NETWORK(obj) (VIR_IS_NETWORK(obj) && VIR_IS_CONNECT((obj)->conn)) /** * VIR_INTERFACE_MAGIC: * * magic value used to protect the API when pointers to interface structures * are passed down by the users. */ #define VIR_INTERFACE_MAGIC 0xDEAD5309 #define VIR_IS_INTERFACE(obj) ((obj) && (obj)->magic==VIR_INTERFACE_MAGIC) #define VIR_IS_CONNECTED_INTERFACE(obj) (VIR_IS_INTERFACE(obj) && VIR_IS_CONNECT((obj)->conn)) /** * VIR_STORAGE_POOL_MAGIC: * * magic value used to protect the API when pointers to storage pool structures * are passed down by the users. */ #define VIR_STORAGE_POOL_MAGIC 0xDEAD5678 #define VIR_IS_STORAGE_POOL(obj) ((obj) && (obj)->magic==VIR_STORAGE_POOL_MAGIC) #define VIR_IS_CONNECTED_STORAGE_POOL(obj) (VIR_IS_STORAGE_POOL(obj) && VIR_IS_CONNECT((obj)->conn)) /** * VIR_STORAGE_VOL_MAGIC: * * magic value used to protect the API when pointers to storage vol structures * are passed down by the users. */ #define VIR_STORAGE_VOL_MAGIC 0xDEAD8765 #define VIR_IS_STORAGE_VOL(obj) ((obj) && (obj)->magic==VIR_STORAGE_VOL_MAGIC) #define VIR_IS_CONNECTED_STORAGE_VOL(obj) (VIR_IS_STORAGE_VOL(obj) && VIR_IS_CONNECT((obj)->conn)) /** * VIR_NODE_DEVICE_MAGIC: * * magic value used to protect the API when pointers to storage vol structures * are passed down by the users. */ #define VIR_NODE_DEVICE_MAGIC 0xDEAD5679 #define VIR_IS_NODE_DEVICE(obj) ((obj) && (obj)->magic==VIR_NODE_DEVICE_MAGIC) #define VIR_IS_CONNECTED_NODE_DEVICE(obj) (VIR_IS_NODE_DEVICE(obj) && VIR_IS_CONNECT((obj)->conn)) /** * VIR_SECRET_MAGIC: * * magic value used to protect the API when pointers to secret structures are * passed down by the users. */ #define VIR_SECRET_MAGIC 0x5678DEAD #define VIR_IS_SECRET(obj) ((obj) && (obj)->magic==VIR_SECRET_MAGIC) #define VIR_IS_CONNECTED_SECRET(obj) (VIR_IS_SECRET(obj) && VIR_IS_CONNECT((obj)->conn)) /** * VIR_STREAM_MAGIC: * * magic value used to protect the API when pointers to stream structures * are passed down by the users. */ #define VIR_STREAM_MAGIC 0x1DEAD666 #define VIR_IS_STREAM(obj) ((obj) && (obj)->magic==VIR_STREAM_MAGIC) #define VIR_IS_CONNECTED_STREAM(obj) (VIR_IS_STREAM(obj) && VIR_IS_CONNECT((obj)->conn)) /** * _virConnect: * * Internal structure associated to a connection */ struct _virConnect { /* All the variables from here, until the 'lock' declaration * are setup at time of connection open, and never changed * since. Thus no need to lock when accessing them */ unsigned int magic; /* specific value to check */ int flags; /* a set of connection flags */ xmlURIPtr uri; /* connection URI */ /* The underlying hypervisor driver and network driver. */ virDriverPtr driver; virNetworkDriverPtr networkDriver; virInterfaceDriverPtr interfaceDriver; virStorageDriverPtr storageDriver; virDeviceMonitorPtr deviceMonitor; virSecretDriverPtr secretDriver; /* Private data pointer which can be used by driver and * network driver as they wish. * NB: 'private' is a reserved word in C++. */ void * privateData; void * networkPrivateData; void * interfacePrivateData; void * storagePrivateData; void * devMonPrivateData; void * secretPrivateData; /* * The lock mutex must be acquired before accessing/changing * any of members following this point, or changing the ref * count of any virDomain/virNetwork object associated with * this connection */ virMutex lock; /* Per-connection error. */ virError err; /* the last error */ virErrorFunc handler; /* associated handlet */ void *userData; /* the user data */ virHashTablePtr domains; /* hash table for known domains */ virHashTablePtr networks; /* hash table for known domains */ virHashTablePtr interfaces; /* hash table for known interfaces */ virHashTablePtr storagePools;/* hash table for known storage pools */ virHashTablePtr storageVols;/* hash table for known storage vols */ virHashTablePtr nodeDevices; /* hash table for known node devices */ virHashTablePtr secrets; /* hash taboe for known secrets */ int refs; /* reference count */ }; /** * _virDomain: * * Internal structure associated to a domain */ struct _virDomain { unsigned int magic; /* specific value to check */ int refs; /* reference count */ virConnectPtr conn; /* pointer back to the connection */ char *name; /* the domain external name */ int id; /* the domain ID */ unsigned char uuid[VIR_UUID_BUFLEN]; /* the domain unique identifier */ }; /** * _virNetwork: * * Internal structure associated to a domain */ struct _virNetwork { unsigned int magic; /* specific value to check */ int refs; /* reference count */ virConnectPtr conn; /* pointer back to the connection */ char *name; /* the network external name */ unsigned char uuid[VIR_UUID_BUFLEN]; /* the network unique identifier */ }; /** * _virInterface: * * Internal structure associated to a physical host interface */ struct _virInterface { unsigned int magic; /* specific value to check */ int refs; /* reference count */ virConnectPtr conn; /* pointer back to the connection */ char *name; /* the network external name */ char *mac; /* the interface MAC address */ }; /** * _virStoragePool: * * Internal structure associated to a storage pool */ struct _virStoragePool { unsigned int magic; /* specific value to check */ int refs; /* reference count */ virConnectPtr conn; /* pointer back to the connection */ char *name; /* the storage pool external name */ unsigned char uuid[VIR_UUID_BUFLEN]; /* the storage pool unique identifier */ }; /** * _virStorageVol: * * Internal structure associated to a storage volume */ struct _virStorageVol { unsigned int magic; /* specific value to check */ int refs; /* reference count */ virConnectPtr conn; /* pointer back to the connection */ char *pool; /* Pool name of owner */ char *name; /* the storage vol external name */ /* XXX currently abusing path for this. Ought not to be so evil */ char key[PATH_MAX]; /* unique key for storage vol */ }; /** * _virNodeDevice: * * Internal structure associated with a node device */ struct _virNodeDevice { unsigned int magic; /* specific value to check */ int refs; /* reference count */ virConnectPtr conn; /* pointer back to the connection */ char *name; /* device name (unique on node) */ char *parent; /* parent device name */ }; /** * _virSecret: * * Internal structure associated with a secret */ struct _virSecret { unsigned int magic; /* specific value to check */ int refs; /* reference count */ virConnectPtr conn; /* pointer back to the connection */ unsigned char uuid[VIR_UUID_BUFLEN]; /* the domain unique identifier */ int usageType; /* the type of usage */ char *usageID; /* the usage's unique identifier */ }; typedef int (*virStreamAbortFunc)(virStreamPtr, void *opaque); typedef int (*virStreamFinishFunc)(virStreamPtr, void *opaque); /** * _virStream: * * Internal structure associated with an input stream */ struct _virStream { unsigned int magic; virConnectPtr conn; int refs; int flags; virStreamDriverPtr driver; void *privateData; }; /************************************************************************ * * * API for domain/connections (de)allocations and lookups * * * ************************************************************************/ virConnectPtr virGetConnect(void); int virUnrefConnect(virConnectPtr conn); virDomainPtr virGetDomain(virConnectPtr conn, const char *name, const unsigned char *uuid); int virUnrefDomain(virDomainPtr domain); virNetworkPtr virGetNetwork(virConnectPtr conn, const char *name, const unsigned char *uuid); int virUnrefNetwork(virNetworkPtr network); virInterfacePtr virGetInterface(virConnectPtr conn, const char *name, const char *mac); int virUnrefInterface(virInterfacePtr iface); virStoragePoolPtr virGetStoragePool(virConnectPtr conn, const char *name, const unsigned char *uuid); int virUnrefStoragePool(virStoragePoolPtr pool); virStorageVolPtr virGetStorageVol(virConnectPtr conn, const char *pool, const char *name, const char *key); int virUnrefStorageVol(virStorageVolPtr vol); virNodeDevicePtr virGetNodeDevice(virConnectPtr conn, const char *name); int virUnrefNodeDevice(virNodeDevicePtr dev); virSecretPtr virGetSecret(virConnectPtr conn, const unsigned char *uuid, int usageType, const char *usageID); int virUnrefSecret(virSecretPtr secret); virStreamPtr virGetStream(virConnectPtr conn); int virUnrefStream(virStreamPtr st); #endif