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6a943419c5
Define the basic framework lock manager plugins. The
basic plugin API for 3rd parties to implemented is
defined in
src/locking/lock_driver.h
This allows dlopen()able modules for alternative locking
schemes, however, we do not install the header. This
requires lock plugins to be in-tree allowing changing of
the lock manager plugin API in future.
The libvirt code for loading & calling into plugins
is in
src/locking/lock_manager.{c,h}
* include/libvirt/virterror.h, src/util/virterror.c: Add
VIR_FROM_LOCKING
* src/locking/lock_driver.h: API for lock driver plugins
to implement
* src/locking/lock_manager.c, src/locking/lock_manager.h:
Internal API for managing locking
* src/Makefile.am: Add locking code
66 lines
2.5 KiB
C
66 lines
2.5 KiB
C
/*
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* lock_manager.h: Defines the internal lock manager API
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*
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* Copyright (C) 2010-2011 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 __VIR_LOCK_MANAGER_H__
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# define __VIR_LOCK_MANAGER_H__
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# include "internal.h"
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# include "lock_driver.h"
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typedef struct _virLockManagerPlugin virLockManagerPlugin;
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typedef virLockManagerPlugin *virLockManagerPluginPtr;
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virLockManagerPluginPtr virLockManagerPluginNew(const char *name,
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unsigned int flags);
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void virLockManagerPluginRef(virLockManagerPluginPtr plugin);
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void virLockManagerPluginUnref(virLockManagerPluginPtr plugin);
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const char *virLockManagerPluginGetName(virLockManagerPluginPtr plugin);
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bool virLockManagerPluginUsesState(virLockManagerPluginPtr plugin);
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virLockManagerPtr virLockManagerNew(virLockManagerPluginPtr plugin,
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unsigned int type,
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size_t nparams,
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virLockManagerParamPtr params,
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unsigned int flags);
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int virLockManagerAddResource(virLockManagerPtr manager,
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unsigned int type,
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const char *name,
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size_t nparams,
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virLockManagerParamPtr params,
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unsigned int flags);
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int virLockManagerAcquire(virLockManagerPtr manager,
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const char *state,
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unsigned int flags);
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int virLockManagerRelease(virLockManagerPtr manager,
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char **state,
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unsigned int flags);
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int virLockManagerInquire(virLockManagerPtr manager,
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char **state,
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unsigned int flags);
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int virLockManagerFree(virLockManagerPtr manager);
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#endif /* __VIR_LOCK_MANAGER_H__ */
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