FreeBSD/Linux Kernel Cross Reference
sys/fs/hfsplus/hfsplus_raw.h

     /*
      *  linux/include/linux/hfsplus_raw.h
      *
      * Copyright (C) 1999
      * Brad Boyer (flar@pants.nu)
      * (C) 2003 Ardis Technologies <roman@ardistech.com>
      *
      * Format of structures on disk
      * Information taken from Apple Technote #1150 (HFS Plus Volume Format)
     *
     */
    
    #ifndef _LINUX_HFSPLUS_RAW_H
    #define _LINUX_HFSPLUS_RAW_H
    
    #include <linux/types.h>
    
    #define __packed __attribute__ ((packed))
    
    /* Some constants */
    #define HFSPLUS_SECTOR_SIZE        512
    #define HFSPLUS_VOLHEAD_SECTOR       2
    #define HFSPLUS_VOLHEAD_SIG     0x482b
    #define HFSPLUS_SUPER_MAGIC     0x482b
    #define HFSPLUS_CURRENT_VERSION      4
    
    #define HFSP_WRAP_MAGIC         0x4244
    #define HFSP_WRAP_ATTRIB_SLOCK  0x8000
    #define HFSP_WRAP_ATTRIB_SPARED 0x0200
    
    #define HFSP_WRAPOFF_SIG          0x00
    #define HFSP_WRAPOFF_ATTRIB       0x0A
    #define HFSP_WRAPOFF_ABLKSIZE     0x14
    #define HFSP_WRAPOFF_ABLKSTART    0x1C
    #define HFSP_WRAPOFF_EMBEDSIG     0x7C
    #define HFSP_WRAPOFF_EMBEDEXT     0x7E
    
    #define HFSP_HIDDENDIR_NAME     "\xe2\x90\x80\xe2\x90\x80\xe2\x90\x80\xe2\x90\x80HFS+ Private Data"
    
    #define HFSP_HARDLINK_TYPE      0x686c6e6b      /* 'hlnk' */
    #define HFSP_HFSPLUS_CREATOR    0x6866732b      /* 'hfs+' */
    
    #define HFSP_MOUNT_VERSION      0x482b4c78      /* 'H+Lx' */
    
    /* Structures used on disk */
    
    typedef u32 hfsplus_cnid;
    typedef u16 hfsplus_unichr;
    
    /* A "string" as used in filenames, etc. */
    typedef struct {
            u16 length;
            hfsplus_unichr unicode[255];
    } __packed hfsplus_unistr;
    
    #define HFSPLUS_MAX_STRLEN 255
    
    /* POSIX permissions */
    typedef struct {
            u32 owner;
            u32 group;
            u32 mode;
            u32 dev;
    } __packed hfsplus_perm;
    
    /* A single contiguous area of a file */
    typedef struct {
            u32 start_block;
            u32 block_count;
    } __packed hfsplus_extent;
    typedef hfsplus_extent hfsplus_extent_rec[8];
    
    /* Information for a "Fork" in a file */
    typedef struct {
            u64 total_size;
            u32 clump_size;
            u32 total_blocks;
            hfsplus_extent_rec extents;
    } __packed hfsplus_fork_raw;
    
    /* HFS+ Volume Header */
    typedef struct hfsplus_vh {
            u16 signature;
            u16 version;
            u32 attributes;
            u32 last_mount_vers;
            u32 reserved;
    
            u32 create_date;
            u32 modify_date;
            u32 backup_date;
            u32 checked_date;
    
            u32 file_count;
            u32 folder_count;
    
            u32 blocksize;
            u32 total_blocks;
            u32 free_blocks;
   
           u32 next_alloc;
           u32 rsrc_clump_sz;
           u32 data_clump_sz;
           hfsplus_cnid next_cnid;
   
           u32 write_count;
           u64 encodings_bmp;
   
           u8 finder_info[32];
   
           hfsplus_fork_raw alloc_file;
           hfsplus_fork_raw ext_file;
           hfsplus_fork_raw cat_file;
           hfsplus_fork_raw attr_file;
           hfsplus_fork_raw start_file;
   } __packed hfsplus_vh;
   
   /* HFS+ volume attributes */
   #define HFSPLUS_VOL_UNMNT     (1 << 8)
   #define HFSPLUS_VOL_SPARE_BLK (1 << 9)
   #define HFSPLUS_VOL_NOCACHE   (1 << 10)
   #define HFSPLUS_VOL_INCNSTNT  (1 << 11)
   #define HFSPLUS_VOL_SOFTLOCK  (1 << 15)
   
   /* HFS+ BTree node descriptor */
   typedef struct {
           u32 next;
           u32 prev;
           s8 kind;
           u8 height;
           u16 num_rec;
           u16 reserved;
   } __packed hfsplus_btree_node_desc;
   
   /* HFS+ BTree node types */
   #define HFSPLUS_NODE_NDX  0x00
   #define HFSPLUS_NODE_HEAD 0x01
   #define HFSPLUS_NODE_MAP  0x02
   #define HFSPLUS_NODE_LEAF 0xFF
   
   /* HFS+ BTree header */
   typedef struct {
           u16 depth;
           u32 root;
           u32 leaf_count;
           u32 leaf_head;
           u32 leaf_tail;
           u16 node_size;
           u16 max_key_len;
           u32 node_count;
           u32 free_nodes;
           u16 reserved1;
           u32 clump_size;
           u8 btree_type;
           u8 reserved2;
           u32 attributes;
           u32 reserved3[16];
   } __packed hfsplus_btree_head;
   
   /* BTree attributes */
   #define HFSPLUS_TREE_BIGKEYS         2
   #define HFSPLUS_TREE_VAR_NDXKEY_SIZE 4
   
   /* HFS+ BTree misc info */
   #define HFSPLUS_TREE_HEAD 0
   #define HFSPLUS_NODE_MXSZ 32768
   
   /* Some special File ID numbers (stolen from hfs.h) */
   #define HFSPLUS_POR_CNID                1       /* Parent Of the Root */
   #define HFSPLUS_ROOT_CNID               2       /* ROOT directory */
   #define HFSPLUS_EXT_CNID                3       /* EXTents B-tree */
   #define HFSPLUS_CAT_CNID                4       /* CATalog B-tree */
   #define HFSPLUS_BAD_CNID                5       /* BAD blocks file */
   #define HFSPLUS_ALLOC_CNID              6       /* ALLOCation file */
   #define HFSPLUS_START_CNID              7       /* STARTup file */
   #define HFSPLUS_ATTR_CNID               8       /* ATTRibutes file */
   #define HFSPLUS_EXCH_CNID               15      /* ExchangeFiles temp id */
   #define HFSPLUS_FIRSTUSER_CNID          16      /* first available user id */
   
   /* HFS+ catalog entry key */
   typedef struct {
           u16 key_len;
           hfsplus_cnid parent;
           hfsplus_unistr name;
   } __packed hfsplus_cat_key;
   
   
   /* Structs from hfs.h */
   typedef struct {
           u16 v;
           u16 h;
   } __packed hfsp_point;
   
   typedef struct {
           u16 top;
           u16 left;
           u16 bottom;
           u16 right;
   } __packed hfsp_rect;
   
   
   /* HFS directory info (stolen from hfs.h */
   typedef struct {
           hfsp_rect frRect;
           u16 frFlags;
           hfsp_point frLocation;
           u16 frView;
   } __packed DInfo;
   
   typedef struct {
           hfsp_point frScroll;
           u32 frOpenChain;
           u16 frUnused;
           u16 frComment;
           u32 frPutAway;
   } __packed DXInfo;
   
   /* HFS+ folder data (part of an hfsplus_cat_entry) */
   typedef struct {
           s16 type;
           u16 flags;
           u32 valence;
           hfsplus_cnid id;
           u32 create_date;
           u32 content_mod_date;
           u32 attribute_mod_date;
           u32 access_date;
           u32 backup_date;
           hfsplus_perm permissions;
           DInfo user_info;
           DXInfo finder_info;
           u32 text_encoding;
           u32 reserved;
   } __packed hfsplus_cat_folder;
   
   /* HFS file info (stolen from hfs.h) */
   typedef struct {
           u32 fdType;
           u32 fdCreator;
           u16 fdFlags;
           hfsp_point fdLocation;
           u16 fdFldr;
   } __packed FInfo;
   
   typedef struct {
           u16 fdIconID;
           u8 fdUnused[8];
           u16 fdComment;
           u32 fdPutAway;
   } __packed FXInfo;
   
   /* HFS+ file data (part of a cat_entry) */
   typedef struct {
           s16 type;
           u16 flags;
           u32 reserved1;
           hfsplus_cnid id;
           u32 create_date;
           u32 content_mod_date;
           u32 attribute_mod_date;
           u32 access_date;
           u32 backup_date;
           hfsplus_perm permissions;
           FInfo user_info;
           FXInfo finder_info;
           u32 text_encoding;
           u32 reserved2;
   
           hfsplus_fork_raw data_fork;
           hfsplus_fork_raw rsrc_fork;
   } __packed hfsplus_cat_file;
   
   /* File attribute bits */
   #define kHFSFileLockedBit       0x0000
   #define kHFSFileLockedMask      0x0001
   #define kHFSThreadExistsBit     0x0001
   #define kHFSThreadExistsMask    0x0002
   
   /* HFS+ catalog thread (part of a cat_entry) */
   typedef struct {
           s16 type;
           s16 reserved;
           hfsplus_cnid parentID;
           hfsplus_unistr nodeName;
   } __packed hfsplus_cat_thread;
   
   #define HFSPLUS_MIN_THREAD_SZ 10
   
   /* A data record in the catalog tree */
   typedef union {
           s16 type;
           hfsplus_cat_folder folder;
           hfsplus_cat_file file;
           hfsplus_cat_thread thread;
   } __packed hfsplus_cat_entry;
   
   /* HFS+ catalog entry type */
   #define HFSPLUS_FOLDER         0x0001
   #define HFSPLUS_FILE           0x0002
   #define HFSPLUS_FOLDER_THREAD  0x0003
   #define HFSPLUS_FILE_THREAD    0x0004
   
   /* HFS+ extents tree key */
   typedef struct {
           u16 key_len;
           u8 fork_type;
           u8 pad;
           hfsplus_cnid cnid;
           u32 start_block;
   } __packed hfsplus_ext_key;
   
   #define HFSPLUS_EXT_KEYLEN 12
   
   /* HFS+ generic BTree key */
   typedef union {
           u16 key_len;
           hfsplus_cat_key cat;
           hfsplus_ext_key ext;
   } __packed hfsplus_btree_key;
   
   #endif

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