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Diffstat (limited to 'fs/hfsplus/hfsplus_fs.h')
| -rw-r--r-- | fs/hfsplus/hfsplus_fs.h | 414 |
1 files changed, 414 insertions, 0 deletions
diff --git a/fs/hfsplus/hfsplus_fs.h b/fs/hfsplus/hfsplus_fs.h new file mode 100644 index 00000000000..533094a570d --- /dev/null +++ b/fs/hfsplus/hfsplus_fs.h @@ -0,0 +1,414 @@ +/* + * linux/include/linux/hfsplus_fs.h + * + * Copyright (C) 1999 + * Brad Boyer (flar@pants.nu) + * (C) 2003 Ardis Technologies <roman@ardistech.com> + * + */ + +#ifndef _LINUX_HFSPLUS_FS_H +#define _LINUX_HFSPLUS_FS_H + +#include <linux/fs.h> +#include <linux/version.h> +#include <linux/buffer_head.h> +#include "hfsplus_raw.h" + +#define DBG_BNODE_REFS 0x00000001 +#define DBG_BNODE_MOD 0x00000002 +#define DBG_CAT_MOD 0x00000004 +#define DBG_INODE 0x00000008 +#define DBG_SUPER 0x00000010 +#define DBG_EXTENT 0x00000020 +#define DBG_BITMAP 0x00000040 + +//#define DBG_MASK (DBG_EXTENT|DBG_INODE|DBG_BNODE_MOD) +//#define DBG_MASK (DBG_BNODE_MOD|DBG_CAT_MOD|DBG_INODE) +//#define DBG_MASK (DBG_CAT_MOD|DBG_BNODE_REFS|DBG_INODE|DBG_EXTENT) +#define DBG_MASK (0) + +#define dprint(flg, fmt, args...) \ + if (flg & DBG_MASK) printk(fmt , ## args) + +/* Runtime config options */ +#define HFSPLUS_DEF_CR_TYPE 0x3F3F3F3F /* '????' */ + +#define HFSPLUS_TYPE_DATA 0x00 +#define HFSPLUS_TYPE_RSRC 0xFF + +typedef int (*btree_keycmp)(hfsplus_btree_key *, hfsplus_btree_key *); + +#define NODE_HASH_SIZE 256 + +/* An HFS+ BTree held in memory */ +struct hfs_btree { + struct super_block *sb; + struct inode *inode; + btree_keycmp keycmp; + + u32 cnid; + u32 root; + u32 leaf_count; + u32 leaf_head; + u32 leaf_tail; + u32 node_count; + u32 free_nodes; + u32 attributes; + + unsigned int node_size; + unsigned int node_size_shift; + unsigned int max_key_len; + unsigned int depth; + + //unsigned int map1_size, map_size; + struct semaphore tree_lock; + + unsigned int pages_per_bnode; + spinlock_t hash_lock; + struct hfs_bnode *node_hash[NODE_HASH_SIZE]; + int node_hash_cnt; +}; + +struct page; + +/* An HFS+ BTree node in memory */ +struct hfs_bnode { + struct hfs_btree *tree; + + u32 prev; + u32 this; + u32 next; + u32 parent; + + u16 num_recs; + u8 type; + u8 height; + + struct hfs_bnode *next_hash; + unsigned long flags; + wait_queue_head_t lock_wq; + atomic_t refcnt; + unsigned int page_offset; + struct page *page[0]; +}; + +#define HFS_BNODE_LOCK 0 +#define HFS_BNODE_ERROR 1 +#define HFS_BNODE_NEW 2 +#define HFS_BNODE_DIRTY 3 +#define HFS_BNODE_DELETED 4 + +/* + * HFS+ superblock info (built from Volume Header on disk) + */ + +struct hfsplus_vh; +struct hfs_btree; + +struct hfsplus_sb_info { + struct buffer_head *s_vhbh; + struct hfsplus_vh *s_vhdr; + struct hfs_btree *ext_tree; + struct hfs_btree *cat_tree; + struct hfs_btree *attr_tree; + struct inode *alloc_file; + struct inode *hidden_dir; + struct nls_table *nls; + + /* Runtime variables */ + u32 blockoffset; + u32 sect_count; + int fs_shift; + + /* Stuff in host order from Vol Header */ + u32 alloc_blksz; + int alloc_blksz_shift; + u32 total_blocks; + u32 free_blocks; + u32 next_alloc; + u32 next_cnid; + u32 file_count; + u32 folder_count; + u32 data_clump_blocks, rsrc_clump_blocks; + + /* Config options */ + u32 creator; + u32 type; + + umode_t umask; + uid_t uid; + gid_t gid; + + int part, session; + + unsigned long flags; + + atomic_t inode_cnt; + u32 last_inode_cnt; + + struct hlist_head rsrc_inodes; +}; + +#define HFSPLUS_SB_WRITEBACKUP 0x0001 +#define HFSPLUS_SB_NODECOMPOSE 0x0002 + + +struct hfsplus_inode_info { + struct semaphore extents_lock; + u32 clump_blocks, alloc_blocks; + sector_t fs_blocks; + /* Allocation extents from catalog record or volume header */ + hfsplus_extent_rec first_extents; + u32 first_blocks; + hfsplus_extent_rec cached_extents; + u32 cached_start, cached_blocks; + atomic_t opencnt; + + struct inode *rsrc_inode; + unsigned long flags; + + /* Device number in hfsplus_permissions in catalog */ + u32 dev; + /* BSD system and user file flags */ + u8 rootflags; + u8 userflags; + + struct list_head open_dir_list; + loff_t phys_size; + struct inode vfs_inode; +}; + +#define HFSPLUS_FLG_RSRC 0x0001 +#define HFSPLUS_FLG_EXT_DIRTY 0x0002 +#define HFSPLUS_FLG_EXT_NEW 0x0004 + +#define HFSPLUS_IS_DATA(inode) (!(HFSPLUS_I(inode).flags & HFSPLUS_FLG_RSRC)) +#define HFSPLUS_IS_RSRC(inode) (HFSPLUS_I(inode).flags & HFSPLUS_FLG_RSRC) + +struct hfs_find_data { + /* filled by caller */ + hfsplus_btree_key *search_key; + hfsplus_btree_key *key; + /* filled by find */ + struct hfs_btree *tree; + struct hfs_bnode *bnode; + /* filled by findrec */ + int record; + int keyoffset, keylength; + int entryoffset, entrylength; +}; + +struct hfsplus_readdir_data { + struct list_head list; + struct file *file; + struct hfsplus_cat_key key; +}; + +#define hfs_btree_open hfsplus_btree_open +#define hfs_btree_close hfsplus_btree_close +#define hfs_btree_write hfsplus_btree_write +#define hfs_bmap_alloc hfsplus_bmap_alloc +#define hfs_bmap_free hfsplus_bmap_free +#define hfs_bnode_read hfsplus_bnode_read +#define hfs_bnode_read_u16 hfsplus_bnode_read_u16 +#define hfs_bnode_read_u8 hfsplus_bnode_read_u8 +#define hfs_bnode_read_key hfsplus_bnode_read_key +#define hfs_bnode_write hfsplus_bnode_write +#define hfs_bnode_write_u16 hfsplus_bnode_write_u16 +#define hfs_bnode_clear hfsplus_bnode_clear +#define hfs_bnode_copy hfsplus_bnode_copy +#define hfs_bnode_move hfsplus_bnode_move +#define hfs_bnode_dump hfsplus_bnode_dump +#define hfs_bnode_unlink hfsplus_bnode_unlink +#define hfs_bnode_findhash hfsplus_bnode_findhash +#define hfs_bnode_find hfsplus_bnode_find +#define hfs_bnode_unhash hfsplus_bnode_unhash +#define hfs_bnode_free hfsplus_bnode_free +#define hfs_bnode_create hfsplus_bnode_create +#define hfs_bnode_get hfsplus_bnode_get +#define hfs_bnode_put hfsplus_bnode_put +#define hfs_brec_lenoff hfsplus_brec_lenoff +#define hfs_brec_keylen hfsplus_brec_keylen +#define hfs_brec_insert hfsplus_brec_insert +#define hfs_brec_remove hfsplus_brec_remove +#define hfs_find_init hfsplus_find_init +#define hfs_find_exit hfsplus_find_exit +#define __hfs_brec_find __hplusfs_brec_find +#define hfs_brec_find hfsplus_brec_find +#define hfs_brec_read hfsplus_brec_read +#define hfs_brec_goto hfsplus_brec_goto +#define hfs_part_find hfsplus_part_find + +/* + * definitions for ext2 flag ioctls (linux really needs a generic + * interface for this). + */ + +/* ext2 ioctls (EXT2_IOC_GETFLAGS and EXT2_IOC_SETFLAGS) to support + * chattr/lsattr */ +#define HFSPLUS_IOC_EXT2_GETFLAGS _IOR('f', 1, long) +#define HFSPLUS_IOC_EXT2_SETFLAGS _IOW('f', 2, long) + +#define EXT2_FLAG_IMMUTABLE 0x00000010 /* Immutable file */ +#define EXT2_FLAG_APPEND 0x00000020 /* writes to file may only append */ +#define EXT2_FLAG_NODUMP 0x00000040 /* do not dump file */ + + +/* + * Functions in any *.c used in other files + */ + +/* bitmap.c */ +int hfsplus_block_allocate(struct super_block *, u32, u32, u32 *); +int hfsplus_block_free(struct super_block *, u32, u32); + +/* btree.c */ +struct hfs_btree *hfs_btree_open(struct super_block *, u32); +void hfs_btree_close(struct hfs_btree *); +void hfs_btree_write(struct hfs_btree *); +struct hfs_bnode *hfs_bmap_alloc(struct hfs_btree *); +void hfs_bmap_free(struct hfs_bnode *); + +/* bnode.c */ +void hfs_bnode_read(struct hfs_bnode *, void *, int, int); +u16 hfs_bnode_read_u16(struct hfs_bnode *, int); +u8 hfs_bnode_read_u8(struct hfs_bnode *, int); +void hfs_bnode_read_key(struct hfs_bnode *, void *, int); +void hfs_bnode_write(struct hfs_bnode *, void *, int, int); +void hfs_bnode_write_u16(struct hfs_bnode *, int, u16); +void hfs_bnode_clear(struct hfs_bnode *, int, int); +void hfs_bnode_copy(struct hfs_bnode *, int, + struct hfs_bnode *, int, int); +void hfs_bnode_move(struct hfs_bnode *, int, int, int); +void hfs_bnode_dump(struct hfs_bnode *); +void hfs_bnode_unlink(struct hfs_bnode *); +struct hfs_bnode *hfs_bnode_findhash(struct hfs_btree *, u32); +struct hfs_bnode *hfs_bnode_find(struct hfs_btree *, u32); +void hfs_bnode_unhash(struct hfs_bnode *); +void hfs_bnode_free(struct hfs_bnode *); +struct hfs_bnode *hfs_bnode_create(struct hfs_btree *, u32); +void hfs_bnode_get(struct hfs_bnode *); +void hfs_bnode_put(struct hfs_bnode *); + +/* brec.c */ +u16 hfs_brec_lenoff(struct hfs_bnode *, u16, u16 *); +u16 hfs_brec_keylen(struct hfs_bnode *, u16); +int hfs_brec_insert(struct hfs_find_data *, void *, int); +int hfs_brec_remove(struct hfs_find_data *); + +/* bfind.c */ +int hfs_find_init(struct hfs_btree *, struct hfs_find_data *); +void hfs_find_exit(struct hfs_find_data *); +int __hfs_brec_find(struct hfs_bnode *, struct hfs_find_data *); +int hfs_brec_find(struct hfs_find_data *); +int hfs_brec_read(struct hfs_find_data *, void *, int); +int hfs_brec_goto(struct hfs_find_data *, int); + +/* catalog.c */ +int hfsplus_cat_cmp_key(hfsplus_btree_key *, hfsplus_btree_key *); +void hfsplus_cat_build_key(struct super_block *sb, hfsplus_btree_key *, u32, struct qstr *); +int hfsplus_find_cat(struct super_block *, u32, struct hfs_find_data *); +int hfsplus_create_cat(u32, struct inode *, struct qstr *, struct inode *); +int hfsplus_delete_cat(u32, struct inode *, struct qstr *); +int hfsplus_rename_cat(u32, struct inode *, struct qstr *, + struct inode *, struct qstr *); + +/* extents.c */ +int hfsplus_ext_cmp_key(hfsplus_btree_key *, hfsplus_btree_key *); +void hfsplus_ext_write_extent(struct inode *); +int hfsplus_get_block(struct inode *, sector_t, struct buffer_head *, int); +int hfsplus_free_fork(struct super_block *, u32, struct hfsplus_fork_raw *, int); +int hfsplus_file_extend(struct inode *); +void hfsplus_file_truncate(struct inode *); + +/* inode.c */ +extern struct address_space_operations hfsplus_aops; +extern struct address_space_operations hfsplus_btree_aops; + +void hfsplus_inode_read_fork(struct inode *, struct hfsplus_fork_raw *); +void hfsplus_inode_write_fork(struct inode *, struct hfsplus_fork_raw *); +int hfsplus_cat_read_inode(struct inode *, struct hfs_find_data *); +int hfsplus_cat_write_inode(struct inode *); +struct inode *hfsplus_new_inode(struct super_block *, int); +void hfsplus_delete_inode(struct inode *); + +/* ioctl.c */ +int hfsplus_ioctl(struct inode *inode, struct file *filp, unsigned int cmd, + unsigned long arg); +int hfsplus_setxattr(struct dentry *dentry, const char *name, + const void *value, size_t size, int flags); +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 |