1 /* 2 * Copyright (c) 2012 Paulo Alcantara <pcacjr (at) zytor.com> 3 * 4 * This program is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU General Public License as 6 * published by the Free Software Foundation. 7 * 8 * This program is distributed in the hope that it would be useful, 9 * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 * GNU General Public License for more details. 12 * 13 * You should have received a copy of the GNU General Public License 14 * along with this program; if not, write the Free Software Foundation, 15 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 16 */ 17 18 #ifndef XFS_DIR2_H_ 19 #define XFS_DIR2_H_ 20 21 #include <core.h> 22 #include <fs.h> 23 24 #include "xfs.h" 25 26 const void *xfs_dir2_dirblks_get_cached(struct fs_info *fs, block_t startblock, 27 xfs_filblks_t c); 28 void xfs_dir2_dirblks_flush_cache(void); 29 30 uint32_t xfs_dir2_da_hashname(const uint8_t *name, int namelen); 31 32 block_t xfs_dir2_get_right_blk(struct fs_info *fs, xfs_dinode_t *core, 33 block_t fsblkno, int *error); 34 35 struct inode *xfs_dir2_local_find_entry(const char *dname, struct inode *parent, 36 xfs_dinode_t *core); 37 struct inode *xfs_dir2_block_find_entry(const char *dname, struct inode *parent, 38 xfs_dinode_t *core); 39 struct inode *xfs_dir2_leaf_find_entry(const char *dname, struct inode *parent, 40 xfs_dinode_t *core); 41 struct inode *xfs_dir2_node_find_entry(const char *dname, struct inode *parent, 42 xfs_dinode_t *core); 43 44 static inline bool xfs_dir2_isleaf(struct fs_info *fs, xfs_dinode_t *dip) 45 { 46 uint64_t last = 0; 47 xfs_bmbt_irec_t irec; 48 49 bmbt_irec_get(&irec, ((xfs_bmbt_rec_t *)&dip->di_literal_area[0]) + 50 be32_to_cpu(dip->di_nextents) - 1); 51 last = irec.br_startoff + irec.br_blockcount; 52 53 return (last == XFS_INFO(fs)->dirleafblk + (1 << XFS_INFO(fs)->dirblklog)); 54 } 55 56 static inline int xfs_dir2_entry_name_cmp(uint8_t *start, uint8_t *end, 57 const char *name) 58 { 59 if (!name || (strlen(name) != end - start)) 60 return -1; 61 62 while (start < end) 63 if (*start++ != *name++) 64 return -1; 65 66 return 0; 67 } 68 69 #endif /* XFS_DIR2_H_ */ 70
