415 lines
12 KiB
C
415 lines
12 KiB
C
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/*
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* linux/include/linux/hfsplus_fs.h
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*
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* Copyright (C) 1999
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* Brad Boyer (flar@pants.nu)
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* (C) 2003 Ardis Technologies <roman@ardistech.com>
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*
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*/
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#ifndef _LINUX_HFSPLUS_FS_H
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#define _LINUX_HFSPLUS_FS_H
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#include <linux/fs.h>
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#include <linux/version.h>
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#include <linux/buffer_head.h>
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#include "hfsplus_raw.h"
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#define DBG_BNODE_REFS 0x00000001
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#define DBG_BNODE_MOD 0x00000002
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#define DBG_CAT_MOD 0x00000004
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#define DBG_INODE 0x00000008
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#define DBG_SUPER 0x00000010
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#define DBG_EXTENT 0x00000020
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#define DBG_BITMAP 0x00000040
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//#define DBG_MASK (DBG_EXTENT|DBG_INODE|DBG_BNODE_MOD)
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//#define DBG_MASK (DBG_BNODE_MOD|DBG_CAT_MOD|DBG_INODE)
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//#define DBG_MASK (DBG_CAT_MOD|DBG_BNODE_REFS|DBG_INODE|DBG_EXTENT)
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#define DBG_MASK (0)
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#define dprint(flg, fmt, args...) \
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if (flg & DBG_MASK) printk(fmt , ## args)
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/* Runtime config options */
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#define HFSPLUS_DEF_CR_TYPE 0x3F3F3F3F /* '????' */
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#define HFSPLUS_TYPE_DATA 0x00
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#define HFSPLUS_TYPE_RSRC 0xFF
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typedef int (*btree_keycmp)(hfsplus_btree_key *, hfsplus_btree_key *);
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#define NODE_HASH_SIZE 256
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/* An HFS+ BTree held in memory */
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struct hfs_btree {
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struct super_block *sb;
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struct inode *inode;
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btree_keycmp keycmp;
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u32 cnid;
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u32 root;
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u32 leaf_count;
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u32 leaf_head;
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u32 leaf_tail;
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u32 node_count;
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u32 free_nodes;
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u32 attributes;
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unsigned int node_size;
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unsigned int node_size_shift;
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unsigned int max_key_len;
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unsigned int depth;
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//unsigned int map1_size, map_size;
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struct semaphore tree_lock;
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unsigned int pages_per_bnode;
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spinlock_t hash_lock;
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struct hfs_bnode *node_hash[NODE_HASH_SIZE];
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int node_hash_cnt;
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};
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struct page;
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/* An HFS+ BTree node in memory */
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struct hfs_bnode {
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struct hfs_btree *tree;
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u32 prev;
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u32 this;
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u32 next;
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u32 parent;
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u16 num_recs;
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u8 type;
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u8 height;
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struct hfs_bnode *next_hash;
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unsigned long flags;
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wait_queue_head_t lock_wq;
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atomic_t refcnt;
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unsigned int page_offset;
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struct page *page[0];
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};
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#define HFS_BNODE_LOCK 0
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#define HFS_BNODE_ERROR 1
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#define HFS_BNODE_NEW 2
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#define HFS_BNODE_DIRTY 3
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#define HFS_BNODE_DELETED 4
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/*
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* HFS+ superblock info (built from Volume Header on disk)
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*/
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struct hfsplus_vh;
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struct hfs_btree;
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struct hfsplus_sb_info {
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struct buffer_head *s_vhbh;
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struct hfsplus_vh *s_vhdr;
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struct hfs_btree *ext_tree;
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struct hfs_btree *cat_tree;
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struct hfs_btree *attr_tree;
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struct inode *alloc_file;
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struct inode *hidden_dir;
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struct nls_table *nls;
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/* Runtime variables */
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u32 blockoffset;
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u32 sect_count;
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int fs_shift;
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/* Stuff in host order from Vol Header */
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u32 alloc_blksz;
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int alloc_blksz_shift;
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u32 total_blocks;
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u32 free_blocks;
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u32 next_alloc;
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u32 next_cnid;
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u32 file_count;
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u32 folder_count;
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u32 data_clump_blocks, rsrc_clump_blocks;
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/* Config options */
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u32 creator;
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u32 type;
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umode_t umask;
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uid_t uid;
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gid_t gid;
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int part, session;
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unsigned long flags;
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atomic_t inode_cnt;
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u32 last_inode_cnt;
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struct hlist_head rsrc_inodes;
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};
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#define HFSPLUS_SB_WRITEBACKUP 0x0001
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#define HFSPLUS_SB_NODECOMPOSE 0x0002
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struct hfsplus_inode_info {
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struct semaphore extents_lock;
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u32 clump_blocks, alloc_blocks;
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sector_t fs_blocks;
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/* Allocation extents from catalog record or volume header */
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hfsplus_extent_rec first_extents;
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u32 first_blocks;
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hfsplus_extent_rec cached_extents;
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u32 cached_start, cached_blocks;
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atomic_t opencnt;
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struct inode *rsrc_inode;
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unsigned long flags;
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/* Device number in hfsplus_permissions in catalog */
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u32 dev;
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/* BSD system and user file flags */
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u8 rootflags;
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u8 userflags;
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struct list_head open_dir_list;
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loff_t phys_size;
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struct inode vfs_inode;
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};
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#define HFSPLUS_FLG_RSRC 0x0001
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#define HFSPLUS_FLG_EXT_DIRTY 0x0002
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#define HFSPLUS_FLG_EXT_NEW 0x0004
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#define HFSPLUS_IS_DATA(inode) (!(HFSPLUS_I(inode).flags & HFSPLUS_FLG_RSRC))
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#define HFSPLUS_IS_RSRC(inode) (HFSPLUS_I(inode).flags & HFSPLUS_FLG_RSRC)
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struct hfs_find_data {
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/* filled by caller */
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hfsplus_btree_key *search_key;
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hfsplus_btree_key *key;
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/* filled by find */
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struct hfs_btree *tree;
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struct hfs_bnode *bnode;
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/* filled by findrec */
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int record;
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int keyoffset, keylength;
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int entryoffset, entrylength;
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};
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struct hfsplus_readdir_data {
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struct list_head list;
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struct file *file;
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struct hfsplus_cat_key key;
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};
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#define hfs_btree_open hfsplus_btree_open
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#define hfs_btree_close hfsplus_btree_close
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#define hfs_btree_write hfsplus_btree_write
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#define hfs_bmap_alloc hfsplus_bmap_alloc
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#define hfs_bmap_free hfsplus_bmap_free
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#define hfs_bnode_read hfsplus_bnode_read
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#define hfs_bnode_read_u16 hfsplus_bnode_read_u16
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#define hfs_bnode_read_u8 hfsplus_bnode_read_u8
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#define hfs_bnode_read_key hfsplus_bnode_read_key
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#define hfs_bnode_write hfsplus_bnode_write
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#define hfs_bnode_write_u16 hfsplus_bnode_write_u16
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#define hfs_bnode_clear hfsplus_bnode_clear
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#define hfs_bnode_copy hfsplus_bnode_copy
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#define hfs_bnode_move hfsplus_bnode_move
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#define hfs_bnode_dump hfsplus_bnode_dump
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#define hfs_bnode_unlink hfsplus_bnode_unlink
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#define hfs_bnode_findhash hfsplus_bnode_findhash
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#define hfs_bnode_find hfsplus_bnode_find
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#define hfs_bnode_unhash hfsplus_bnode_unhash
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#define hfs_bnode_free hfsplus_bnode_free
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#define hfs_bnode_create hfsplus_bnode_create
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#define hfs_bnode_get hfsplus_bnode_get
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#define hfs_bnode_put hfsplus_bnode_put
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#define hfs_brec_lenoff hfsplus_brec_lenoff
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#define hfs_brec_keylen hfsplus_brec_keylen
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#define hfs_brec_insert hfsplus_brec_insert
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#define hfs_brec_remove hfsplus_brec_remove
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#define hfs_find_init hfsplus_find_init
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#define hfs_find_exit hfsplus_find_exit
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#define __hfs_brec_find __hplusfs_brec_find
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#define hfs_brec_find hfsplus_brec_find
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#define hfs_brec_read hfsplus_brec_read
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#define hfs_brec_goto hfsplus_brec_goto
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#define hfs_part_find hfsplus_part_find
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/*
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* definitions for ext2 flag ioctls (linux really needs a generic
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* interface for this).
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*/
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/* ext2 ioctls (EXT2_IOC_GETFLAGS and EXT2_IOC_SETFLAGS) to support
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* chattr/lsattr */
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#define HFSPLUS_IOC_EXT2_GETFLAGS _IOR('f', 1, long)
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#define HFSPLUS_IOC_EXT2_SETFLAGS _IOW('f', 2, long)
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#define EXT2_FLAG_IMMUTABLE 0x00000010 /* Immutable file */
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#define EXT2_FLAG_APPEND 0x00000020 /* writes to file may only append */
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#define EXT2_FLAG_NODUMP 0x00000040 /* do not dump file */
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/*
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* Functions in any *.c used in other files
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*/
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/* bitmap.c */
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int hfsplus_block_allocate(struct super_block *, u32, u32, u32 *);
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int hfsplus_block_free(struct super_block *, u32, u32);
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/* btree.c */
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struct hfs_btree *hfs_btree_open(struct super_block *, u32);
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void hfs_btree_close(struct hfs_btree *);
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void hfs_btree_write(struct hfs_btree *);
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struct hfs_bnode *hfs_bmap_alloc(struct hfs_btree *);
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void hfs_bmap_free(struct hfs_bnode *);
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/* bnode.c */
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void hfs_bnode_read(struct hfs_bnode *, void *, int, int);
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u16 hfs_bnode_read_u16(struct hfs_bnode *, int);
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u8 hfs_bnode_read_u8(struct hfs_bnode *, int);
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void hfs_bnode_read_key(struct hfs_bnode *, void *, int);
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void hfs_bnode_write(struct hfs_bnode *, void *, int, int);
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void hfs_bnode_write_u16(struct hfs_bnode *, int, u16);
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void hfs_bnode_clear(struct hfs_bnode *, int, int);
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void hfs_bnode_copy(struct hfs_bnode *, int,
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struct hfs_bnode *, int, int);
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void hfs_bnode_move(struct hfs_bnode *, int, int, int);
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void hfs_bnode_dump(struct hfs_bnode *);
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void hfs_bnode_unlink(struct hfs_bnode *);
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struct hfs_bnode *hfs_bnode_findhash(struct hfs_btree *, u32);
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struct hfs_bnode *hfs_bnode_find(struct hfs_btree *, u32);
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void hfs_bnode_unhash(struct hfs_bnode *);
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void hfs_bnode_free(struct hfs_bnode *);
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struct hfs_bnode *hfs_bnode_create(struct hfs_btree *, u32);
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void hfs_bnode_get(struct hfs_bnode *);
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void hfs_bnode_put(struct hfs_bnode *);
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/* brec.c */
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u16 hfs_brec_lenoff(struct hfs_bnode *, u16, u16 *);
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u16 hfs_brec_keylen(struct hfs_bnode *, u16);
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int hfs_brec_insert(struct hfs_find_data *, void *, int);
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int hfs_brec_remove(struct hfs_find_data *);
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/* bfind.c */
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int hfs_find_init(struct hfs_btree *, struct hfs_find_data *);
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void hfs_find_exit(struct hfs_find_data *);
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int __hfs_brec_find(struct hfs_bnode *, struct hfs_find_data *);
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int hfs_brec_find(struct hfs_find_data *);
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int hfs_brec_read(struct hfs_find_data *, void *, int);
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int hfs_brec_goto(struct hfs_find_data *, int);
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/* catalog.c */
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int hfsplus_cat_cmp_key(hfsplus_btree_key *, hfsplus_btree_key *);
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void hfsplus_cat_build_key(struct super_block *sb, hfsplus_btree_key *, u32, struct qstr *);
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int hfsplus_find_cat(struct super_block *, u32, struct hfs_find_data *);
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int hfsplus_create_cat(u32, struct inode *, struct qstr *, struct inode *);
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int hfsplus_delete_cat(u32, struct inode *, struct qstr *);
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int hfsplus_rename_cat(u32, struct inode *, struct qstr *,
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struct inode *, struct qstr *);
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/* extents.c */
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int hfsplus_ext_cmp_key(hfsplus_btree_key *, hfsplus_btree_key *);
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void hfsplus_ext_write_extent(struct inode *);
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int hfsplus_get_block(struct inode *, sector_t, struct buffer_head *, int);
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int hfsplus_free_fork(struct super_block *, u32, struct hfsplus_fork_raw *, int);
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int hfsplus_file_extend(struct inode *);
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void hfsplus_file_truncate(struct inode *);
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/* inode.c */
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extern struct address_space_operations hfsplus_aops;
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extern struct address_space_operations hfsplus_btree_aops;
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void hfsplus_inode_read_fork(struct inode *, struct hfsplus_fork_raw *);
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void hfsplus_inode_write_fork(struct inode *, struct hfsplus_fork_raw *);
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int hfsplus_cat_read_inode(struct inode *, struct hfs_find_data *);
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int hfsplus_cat_write_inode(struct inode *);
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struct inode *hfsplus_new_inode(struct super_block *, int);
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void hfsplus_delete_inode(struct inode *);
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/* ioctl.c */
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int hfsplus_ioctl(struct inode *inode, struct file *filp, unsigned int cmd,
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unsigned long arg);
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int hfsplus_setxattr(struct dentry *dentry, const char *name,
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const void *value, size_t size, int flags);
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|
ssize_t hfsplus_getxattr(struct dentry *dentry, const char *name,
|
||
|
|
void *value, size_t size);
|
||
|
|
ssize_t hfsplus_listxattr(struct dentry *dentry, char *buffer, size_t size);
|
||
|
|
|
||
|
|
/* options.c */
|
||
|
|
int parse_options(char *, struct hfsplus_sb_info *);
|
||
|
|
void fill_defaults(struct hfsplus_sb_info *);
|
||
|
|
|
||
|
|
/* tables.c */
|
||
|
|
extern u16 hfsplus_case_fold_table[];
|
||
|
|
extern u16 hfsplus_decompose_table[];
|
||
|
|
extern u16 hfsplus_compose_table[];
|
||
|
|
|
||
|
|
/* unicode.c */
|
||
|
|
int hfsplus_unistrcmp(const struct hfsplus_unistr *, const struct hfsplus_unistr *);
|
||
|
|
int hfsplus_uni2asc(struct super_block *, const struct hfsplus_unistr *, char *, int *);
|
||
|
|
int hfsplus_asc2uni(struct super_block *, struct hfsplus_unistr *, const char *, int);
|
||
|
|
|
||
|
|
/* wrapper.c */
|
||
|
|
int hfsplus_read_wrapper(struct super_block *);
|
||
|
|
|
||
|
|
int hfs_part_find(struct super_block *, sector_t *, sector_t *);
|
||
|
|
|
||
|
|
/* access macros */
|
||
|
|
/*
|
||
|
|
static inline struct hfsplus_sb_info *HFSPLUS_SB(struct super_block *sb)
|
||
|
|
{
|
||
|
|
return sb->s_fs_info;
|
||
|
|
}
|
||
|
|
static inline struct hfsplus_inode_info *HFSPLUS_I(struct inode *inode)
|
||
|
|
{
|
||
|
|
return list_entry(inode, struct hfsplus_inode_info, vfs_inode);
|
||
|
|
}
|
||
|
|
*/
|
||
|
|
#define HFSPLUS_SB(super) (*(struct hfsplus_sb_info *)(super)->s_fs_info)
|
||
|
|
#define HFSPLUS_I(inode) (*list_entry(inode, struct hfsplus_inode_info, vfs_inode))
|
||
|
|
|
||
|
|
#if 1
|
||
|
|
#define hfsplus_kmap(p) ({ struct page *__p = (p); kmap(__p); })
|
||
|
|
#define hfsplus_kunmap(p) ({ struct page *__p = (p); kunmap(__p); __p; })
|
||
|
|
#else
|
||
|
|
#define hfsplus_kmap(p) kmap(p)
|
||
|
|
#define hfsplus_kunmap(p) kunmap(p)
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#define sb_bread512(sb, sec, data) ({ \
|
||
|
|
struct buffer_head *__bh; \
|
||
|
|
sector_t __block; \
|
||
|
|
loff_t __start; \
|
||
|
|
int __offset; \
|
||
|
|
\
|
||
|
|
__start = (loff_t)(sec) << HFSPLUS_SECTOR_SHIFT;\
|
||
|
|
__block = __start >> (sb)->s_blocksize_bits; \
|
||
|
|
__offset = __start & ((sb)->s_blocksize - 1); \
|
||
|
|
__bh = sb_bread((sb), __block); \
|
||
|
|
if (likely(__bh != NULL)) \
|
||
|
|
data = (void *)(__bh->b_data + __offset);\
|
||
|
|
else \
|
||
|
|
data = NULL; \
|
||
|
|
__bh; \
|
||
|
|
})
|
||
|
|
|
||
|
|
/* time macros */
|
||
|
|
#define __hfsp_mt2ut(t) (be32_to_cpu(t) - 2082844800U)
|
||
|
|
#define __hfsp_ut2mt(t) (cpu_to_be32(t + 2082844800U))
|
||
|
|
|
||
|
|
/* compatibility */
|
||
|
|
#define hfsp_mt2ut(t) (struct timespec){ .tv_sec = __hfsp_mt2ut(t) }
|
||
|
|
#define hfsp_ut2mt(t) __hfsp_ut2mt((t).tv_sec)
|
||
|
|
#define hfsp_now2mt() __hfsp_ut2mt(get_seconds())
|
||
|
|
|
||
|
|
#define kdev_t_to_nr(x) (x)
|
||
|
|
|
||
|
|
#endif
|