linux/fs/btrfs/xattr.h
Christoph Hellwig eaa47d8612 btrfs: optmize listxattr
The ->list handler is really not useful at all, because we always call
btrfs_xattr_generic_list anyway.  After this is done
find_btrfs_xattr_handler becomes unused, and it becomes obvious that the
temporary name buffer allocation isn't needed but we can directly copy
into the supplied buffer.

Tested with various getfattr -d calls on varying xattr lists.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:04:07 -04:00

51 lines
1.6 KiB
C

/*
* Copyright (C) 2007 Red Hat. All rights reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License v2 as published by the Free Software Foundation.
*
* This program 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, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 021110-1307, USA.
*/
#ifndef __XATTR__
#define __XATTR__
#include <linux/xattr.h>
#include "ctree.h"
/* Name indexes */
enum {
BTRFS_XATTR_INDEX_USER,
BTRFS_XATTR_INDEX_POSIX_ACL_ACCESS,
BTRFS_XATTR_INDEX_POSIX_ACL_DEFAULT,
BTRFS_XATTR_INDEX_TRUSTED,
BTRFS_XATTR_INDEX_SECURITY,
BTRFS_XATTR_INDEX_SYSTEM,
BTRFS_XATTR_INDEX_END,
};
extern struct xattr_handler btrfs_xattr_user_handler;
extern struct xattr_handler btrfs_xattr_trusted_handler;
extern struct xattr_handler btrfs_xattr_acl_access_handler;
extern struct xattr_handler btrfs_xattr_acl_default_handler;
extern struct xattr_handler btrfs_xattr_security_handler;
extern struct xattr_handler btrfs_xattr_system_handler;
extern struct xattr_handler *btrfs_xattr_handlers[];
ssize_t btrfs_xattr_get(struct inode *inode, int name_index, const char *name,
void *buffer, size_t size);
int btrfs_xattr_set(struct inode *inode, int name_index, const char *name,
const void *value, size_t size, int flags);
#endif /* __XATTR__ */