diff options
Diffstat (limited to 'fs/hfs/btree.h')
| -rw-r--r-- | fs/hfs/btree.h | 113 |
1 files changed, 36 insertions, 77 deletions
diff --git a/fs/hfs/btree.h b/fs/hfs/btree.h index 0e6baee93245..99be858b2446 100644 --- a/fs/hfs/btree.h +++ b/fs/hfs/btree.h @@ -86,87 +86,46 @@ struct hfs_find_data { /* btree.c */ -extern struct hfs_btree *hfs_btree_open(struct super_block *, u32, btree_keycmp); -extern void hfs_btree_close(struct hfs_btree *); -extern void hfs_btree_write(struct hfs_btree *); -extern int hfs_bmap_reserve(struct hfs_btree *, int); -extern struct hfs_bnode * hfs_bmap_alloc(struct hfs_btree *); +extern struct hfs_btree *hfs_btree_open(struct super_block *sb, u32 id, + btree_keycmp keycmp); +extern void hfs_btree_close(struct hfs_btree *tree); +extern void hfs_btree_write(struct hfs_btree *tree); +extern int hfs_bmap_reserve(struct hfs_btree *tree, u32 rsvd_nodes); +extern struct hfs_bnode *hfs_bmap_alloc(struct hfs_btree *tree); extern void hfs_bmap_free(struct hfs_bnode *node); /* bnode.c */ -extern void hfs_bnode_read(struct hfs_bnode *, void *, int, int); -extern u16 hfs_bnode_read_u16(struct hfs_bnode *, int); -extern u8 hfs_bnode_read_u8(struct hfs_bnode *, int); -extern void hfs_bnode_read_key(struct hfs_bnode *, void *, int); -extern void hfs_bnode_write(struct hfs_bnode *, void *, int, int); -extern void hfs_bnode_write_u16(struct hfs_bnode *, int, u16); -extern void hfs_bnode_write_u8(struct hfs_bnode *, int, u8); -extern void hfs_bnode_clear(struct hfs_bnode *, int, int); -extern void hfs_bnode_copy(struct hfs_bnode *, int, - struct hfs_bnode *, int, int); -extern void hfs_bnode_move(struct hfs_bnode *, int, int, int); -extern void hfs_bnode_dump(struct hfs_bnode *); -extern void hfs_bnode_unlink(struct hfs_bnode *); -extern struct hfs_bnode *hfs_bnode_findhash(struct hfs_btree *, u32); -extern struct hfs_bnode *hfs_bnode_find(struct hfs_btree *, u32); -extern void hfs_bnode_unhash(struct hfs_bnode *); -extern void hfs_bnode_free(struct hfs_bnode *); -extern struct hfs_bnode *hfs_bnode_create(struct hfs_btree *, u32); -extern void hfs_bnode_get(struct hfs_bnode *); -extern void hfs_bnode_put(struct hfs_bnode *); +extern void hfs_bnode_read(struct hfs_bnode *node, void *buf, u32 off, u32 len); +extern u16 hfs_bnode_read_u16(struct hfs_bnode *node, u32 off); +extern u8 hfs_bnode_read_u8(struct hfs_bnode *node, u32 off); +extern void hfs_bnode_read_key(struct hfs_bnode *node, void *key, u32 off); +extern void hfs_bnode_write(struct hfs_bnode *node, void *buf, u32 off, u32 len); +extern void hfs_bnode_write_u16(struct hfs_bnode *node, u32 off, u16 data); +extern void hfs_bnode_write_u8(struct hfs_bnode *node, u32 off, u8 data); +extern void hfs_bnode_clear(struct hfs_bnode *node, u32 off, u32 len); +extern void hfs_bnode_copy(struct hfs_bnode *dst_node, u32 dst, + struct hfs_bnode *src_node, u32 src, u32 len); +extern void hfs_bnode_move(struct hfs_bnode *node, u32 dst, u32 src, u32 len); +extern void hfs_bnode_dump(struct hfs_bnode *node); +extern void hfs_bnode_unlink(struct hfs_bnode *node); +extern struct hfs_bnode *hfs_bnode_findhash(struct hfs_btree *tree, u32 cnid); +extern struct hfs_bnode *hfs_bnode_find(struct hfs_btree *tree, u32 num); +extern void hfs_bnode_unhash(struct hfs_bnode *node); +extern void hfs_bnode_free(struct hfs_bnode *node); +extern struct hfs_bnode *hfs_bnode_create(struct hfs_btree *tree, u32 num); +extern void hfs_bnode_get(struct hfs_bnode *node); +extern void hfs_bnode_put(struct hfs_bnode *node); /* brec.c */ -extern u16 hfs_brec_lenoff(struct hfs_bnode *, u16, u16 *); -extern u16 hfs_brec_keylen(struct hfs_bnode *, u16); -extern int hfs_brec_insert(struct hfs_find_data *, void *, int); -extern int hfs_brec_remove(struct hfs_find_data *); +extern u16 hfs_brec_lenoff(struct hfs_bnode *node, u16 rec, u16 *off); +extern u16 hfs_brec_keylen(struct hfs_bnode *node, u16 rec); +extern int hfs_brec_insert(struct hfs_find_data *fd, void *entry, u32 entry_len); +extern int hfs_brec_remove(struct hfs_find_data *fd); /* bfind.c */ -extern int hfs_find_init(struct hfs_btree *, struct hfs_find_data *); -extern void hfs_find_exit(struct hfs_find_data *); -extern int __hfs_brec_find(struct hfs_bnode *, struct hfs_find_data *); -extern int hfs_brec_find(struct hfs_find_data *); -extern int hfs_brec_read(struct hfs_find_data *, void *, int); -extern int hfs_brec_goto(struct hfs_find_data *, int); - - -struct hfs_bnode_desc { - __be32 next; /* (V) Number of the next node at this level */ - __be32 prev; /* (V) Number of the prev node at this level */ - u8 type; /* (F) The type of node */ - u8 height; /* (F) The level of this node (leaves=1) */ - __be16 num_recs; /* (V) The number of records in this node */ - u16 reserved; -} __packed; - -#define HFS_NODE_INDEX 0x00 /* An internal (index) node */ -#define HFS_NODE_HEADER 0x01 /* The tree header node (node 0) */ -#define HFS_NODE_MAP 0x02 /* Holds part of the bitmap of used nodes */ -#define HFS_NODE_LEAF 0xFF /* A leaf (ndNHeight==1) node */ - -struct hfs_btree_header_rec { - __be16 depth; /* (V) The number of levels in this B-tree */ - __be32 root; /* (V) The node number of the root node */ - __be32 leaf_count; /* (V) The number of leaf records */ - __be32 leaf_head; /* (V) The number of the first leaf node */ - __be32 leaf_tail; /* (V) The number of the last leaf node */ - __be16 node_size; /* (F) The number of bytes in a node (=512) */ - __be16 max_key_len; /* (F) The length of a key in an index node */ - __be32 node_count; /* (V) The total number of nodes */ - __be32 free_nodes; /* (V) The number of unused nodes */ - u16 reserved1; - __be32 clump_size; /* (F) clump size. not usually used. */ - u8 btree_type; /* (F) BTree type */ - u8 reserved2; - __be32 attributes; /* (F) attributes */ - u32 reserved3[16]; -} __packed; - -#define BTREE_ATTR_BADCLOSE 0x00000001 /* b-tree not closed properly. not - used by hfsplus. */ -#define HFS_TREE_BIGKEYS 0x00000002 /* key length is u16 instead of u8. - used by hfsplus. */ -#define HFS_TREE_VARIDXKEYS 0x00000004 /* variable key length instead of - max key length. use din catalog - b-tree but not in extents - b-tree (hfsplus). */ +extern int hfs_find_init(struct hfs_btree *tree, struct hfs_find_data *fd); +extern void hfs_find_exit(struct hfs_find_data *fd); +extern int __hfs_brec_find(struct hfs_bnode *bnode, struct hfs_find_data *fd); +extern int hfs_brec_find(struct hfs_find_data *fd); +extern int hfs_brec_read(struct hfs_find_data *fd, void *rec, u32 rec_len); +extern int hfs_brec_goto(struct hfs_find_data *fd, int cnt); |