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/*
* Copyright (c) 2012 Paulo Alcantara <pcacjr@zytor.com>
*
* This program 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.
*
* This program is distributed in the hope that it would 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 the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef XFS_DIR2_H_
#define XFS_DIR2_H_
#include <core.h>
#include <fs.h>
#include "xfs.h"
void *xfs_dir2_dirblks_get_cached(struct fs_info *fs, block_t startblock,
xfs_filblks_t c);
void xfs_dir2_dirblks_flush_cache(void);
uint32_t xfs_dir2_da_hashname(const uint8_t *name, int namelen);
block_t xfs_dir2_get_right_blk(struct fs_info *fs, xfs_dinode_t *core,
block_t fsblkno, int *error);
struct inode *xfs_dir2_local_find_entry(const char *dname, struct inode *parent,
xfs_dinode_t *core);
struct inode *xfs_dir2_block_find_entry(const char *dname, struct inode *parent,
xfs_dinode_t *core);
struct inode *xfs_dir2_leaf_find_entry(const char *dname, struct inode *parent,
xfs_dinode_t *core);
struct inode *xfs_dir2_node_find_entry(const char *dname, struct inode *parent,
xfs_dinode_t *core);
static inline bool xfs_dir2_isleaf(struct fs_info *fs, xfs_dinode_t *dip)
{
uint64_t last = 0;
xfs_bmbt_irec_t irec;
bmbt_irec_get(&irec, (xfs_bmbt_rec_t *)XFS_DFORK_PTR(dip, XFS_DATA_FORK) +
be32_to_cpu(dip->di_nextents) - 1);
last = irec.br_startoff + irec.br_blockcount;
return (last == XFS_INFO(fs)->dirleafblk + (1 << XFS_INFO(fs)->dirblklog));
}
static inline int xfs_dir2_entry_name_cmp(uint8_t *start, uint8_t *end,
const char *name)
{
if (!name || (strlen(name) != end - start))
return -1;
while (start < end)
if (*start++ != *name++)
return -1;
return 0;
}
#endif /* XFS_DIR2_H_ */
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