70 lines
2.2 KiB
C
70 lines
2.2 KiB
C
/*
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* Copyright (c) 2012 Paulo Alcantara <pcacjr@zytor.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it would 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef XFS_DIR2_H_
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#define XFS_DIR2_H_
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#include <core.h>
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#include <fs.h>
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#include "xfs.h"
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const void *xfs_dir2_dirblks_get_cached(struct fs_info *fs, block_t startblock,
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xfs_filblks_t c);
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void xfs_dir2_dirblks_flush_cache(void);
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uint32_t xfs_dir2_da_hashname(const uint8_t *name, int namelen);
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block_t xfs_dir2_get_right_blk(struct fs_info *fs, xfs_dinode_t *core,
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block_t fsblkno, int *error);
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struct inode *xfs_dir2_local_find_entry(const char *dname, struct inode *parent,
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xfs_dinode_t *core);
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struct inode *xfs_dir2_block_find_entry(const char *dname, struct inode *parent,
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xfs_dinode_t *core);
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struct inode *xfs_dir2_leaf_find_entry(const char *dname, struct inode *parent,
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xfs_dinode_t *core);
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struct inode *xfs_dir2_node_find_entry(const char *dname, struct inode *parent,
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xfs_dinode_t *core);
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static inline bool xfs_dir2_isleaf(struct fs_info *fs, xfs_dinode_t *dip)
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{
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uint64_t last = 0;
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xfs_bmbt_irec_t irec;
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bmbt_irec_get(&irec, ((xfs_bmbt_rec_t *)&dip->di_literal_area[0]) +
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be32_to_cpu(dip->di_nextents) - 1);
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last = irec.br_startoff + irec.br_blockcount;
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return (last == XFS_INFO(fs)->dirleafblk + (1 << XFS_INFO(fs)->dirblklog));
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}
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static inline int xfs_dir2_entry_name_cmp(uint8_t *start, uint8_t *end,
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const char *name)
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{
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if (!name || (strlen(name) != end - start))
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return -1;
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while (start < end)
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if (*start++ != *name++)
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return -1;
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return 0;
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}
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#endif /* XFS_DIR2_H_ */
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