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/*
Copyright (c) 2009 Z RESEARCH, Inc. <http://www.zresearch.com>
This file is part of GlusterFS.
GlusterFS is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
by the Free Software Foundation; either version 3 of the License,
or (at your option) any later version.
GlusterFS 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
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see
<http://www.gnu.org/licenses/>.
*/
#ifndef __XATTR_CACHE_H__
#define __XATTR_CACHE_H__
#include "glusterfs.h"
#include "inode.h"
typedef struct __xattr_cache_handle {
loc_t loc;
fd_t *fd;
} xattr_cache_handle_t;
typedef struct __xattr_cache_entry {
char *key; /* name of the xattr */
int32_t *array; /* value */
size_t len; /* length of array in bytes */
inode_t *inode; /* inode for which the entry is for */
xattr_cache_handle_t *handle;
unsigned char dirty;
unsigned long nraccess; /* number of times accessed */
} xattr_cache_entry_t;
typedef struct __xattr_cache {
size_t size;
pthread_mutex_t lock;
xattr_cache_entry_t **entries;
} xattr_cache_t;
xattr_cache_t * posix_xattr_cache_init (size_t size);
int posix_xattr_cache_read (xlator_t *this, xattr_cache_handle_t *handle,
char *key, int32_t *array, size_t len);
int posix_xattr_cache_write (xlator_t *this, xattr_cache_handle_t *handle,
char *key, int32_t *array, size_t len);
int posix_xattr_cache_flush (xlator_t *this, xattr_cache_handle_t *handle);
int posix_xattr_cache_flush_all (xlator_t *this);
#endif /* __XATTR_CACHE_H__ */
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