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8b0f721f2e
The driver.{c,h} files are primarily targetted at loading hypervisor
drivers and some helper functions in that area. It also, however,
contains a generically useful function for loading extension modules
that is called by the storage driver. Split that functionality off
into a new virmodule.{c,h} file to isolate it.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
129 lines
4.3 KiB
C
129 lines
4.3 KiB
C
/*
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* driver.h: description of the set of interfaces provided by a
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* entry point to the virtualization engine
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*
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* Copyright (C) 2006-2014 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_DRIVER_H__
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# define __VIR_DRIVER_H__
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# include <unistd.h>
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# include "internal.h"
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# include "libvirt_internal.h"
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# include "viruri.h"
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/* Status codes returned from driver open call. */
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typedef enum {
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/* Opened successfully. */
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VIR_DRV_OPEN_SUCCESS = 0,
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/* 'name' is not for us. */
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VIR_DRV_OPEN_DECLINED = -1,
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/* 'name' is for us, but there was some error. virConnectOpen will
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* return an error rather than continue probing the other drivers.
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*/
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VIR_DRV_OPEN_ERROR = -2,
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} virDrvOpenStatus;
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/* Internal feature-detection macro. Don't call drv->supports_feature
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* directly if you don't have to, because it may be NULL, use this macro
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* instead.
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*
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* Note that this treats a possible error returned by drv->supports_feature
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* the same as not supported. If you care about the error, call
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* drv->supports_feature directly.
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*
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* Returns:
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* != 0 Feature is supported.
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* 0 Feature is not supported.
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*/
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# define VIR_DRV_SUPPORTS_FEATURE(drv, conn, feature) \
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((drv)->connectSupportsFeature ? \
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(drv)->connectSupportsFeature((conn), (feature)) > 0 : 0)
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# define __VIR_DRIVER_H_INCLUDES___
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# include "driver-hypervisor.h"
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# include "driver-interface.h"
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# include "driver-network.h"
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# include "driver-nodedev.h"
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# include "driver-nwfilter.h"
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# include "driver-secret.h"
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# include "driver-state.h"
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# include "driver-stream.h"
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# include "driver-storage.h"
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# undef __VIR_DRIVER_H_INCLUDES___
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typedef struct _virConnectDriver virConnectDriver;
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typedef virConnectDriver *virConnectDriverPtr;
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struct _virConnectDriver {
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/* Wether driver permits a server in the URI */
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bool localOnly;
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/*
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* NULL terminated list of supported URI schemes.
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* - Single element { NULL } list indicates no supported schemes
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* - NULL list indicates wildcard supportnig all schemes
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*/
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const char **uriSchemes;
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virHypervisorDriverPtr hypervisorDriver;
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virInterfaceDriverPtr interfaceDriver;
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virNetworkDriverPtr networkDriver;
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virNodeDeviceDriverPtr nodeDeviceDriver;
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virNWFilterDriverPtr nwfilterDriver;
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virSecretDriverPtr secretDriver;
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virStorageDriverPtr storageDriver;
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};
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int virRegisterConnectDriver(virConnectDriverPtr driver,
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bool setSharedDrivers) ATTRIBUTE_RETURN_CHECK;
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int virRegisterStateDriver(virStateDriverPtr driver) ATTRIBUTE_RETURN_CHECK;
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int virSetSharedInterfaceDriver(virInterfaceDriverPtr driver) ATTRIBUTE_RETURN_CHECK;
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int virSetSharedNetworkDriver(virNetworkDriverPtr driver) ATTRIBUTE_RETURN_CHECK;
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int virSetSharedNodeDeviceDriver(virNodeDeviceDriverPtr driver) ATTRIBUTE_RETURN_CHECK;
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int virSetSharedNWFilterDriver(virNWFilterDriverPtr driver) ATTRIBUTE_RETURN_CHECK;
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int virSetSharedSecretDriver(virSecretDriverPtr driver) ATTRIBUTE_RETURN_CHECK;
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int virSetSharedStorageDriver(virStorageDriverPtr driver) ATTRIBUTE_RETURN_CHECK;
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int virDriverLoadModule(const char *name,
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const char *regfunc,
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bool required);
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virConnectPtr virGetConnectInterface(void);
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virConnectPtr virGetConnectNetwork(void);
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virConnectPtr virGetConnectNWFilter(void);
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virConnectPtr virGetConnectNodeDev(void);
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virConnectPtr virGetConnectSecret(void);
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virConnectPtr virGetConnectStorage(void);
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int virSetConnectInterface(virConnectPtr conn);
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int virSetConnectNetwork(virConnectPtr conn);
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int virSetConnectNWFilter(virConnectPtr conn);
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int virSetConnectNodeDev(virConnectPtr conn);
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int virSetConnectSecret(virConnectPtr conn);
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int virSetConnectStorage(virConnectPtr conn);
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#endif /* __VIR_DRIVER_H__ */
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