/* SPDX-License-Identifier: GPL-2.0 */ /* * 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> /* Some constants */ #define HFSPLUS_SECTOR_SIZE 512 #define HFSPLUS_SECTOR_SHIFT 9 #define HFSPLUS_VOLHEAD_SECTOR 2 #define HFSPLUS_VOLHEAD_SIG 0x482b #define HFSPLUS_VOLHEAD_SIGX 0x4858 #define HFSPLUS_SUPER_MAGIC 0x482b #define HFSPLUS_MIN_VERSION 4 #define HFSPLUS_CURRENT_VERSION 5 #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_SYMLINK_TYPE 0x736c6e6b /* 'slnk' */ #define HFSP_SYMLINK_CREATOR 0x72686170 /* 'rhap' */ #define HFSP_MOUNT_VERSION 0x482b4c78 /* 'H+Lx' */ /* Structures used on disk */ typedef __be32 hfsplus_cnid; typedef __be16 hfsplus_unichr; #define HFSPLUS_MAX_STRLEN 255 #define HFSPLUS_ATTR_MAX_STRLEN 127 /* A "string" as used in filenames, etc. */ struct hfsplus_unistr { __be16 length; hfsplus_unichr unicode[HFSPLUS_MAX_STRLEN]; } __packed; /* * A "string" is used in attributes file * for name of extended attribute */ struct hfsplus_attr_unistr { __be16 length; hfsplus_unichr unicode[HFSPLUS_ATTR_MAX_STRLEN]; } __packed; /* POSIX permissions */ struct hfsplus_perm { __be32 owner; __be32 group; u8 rootflags; u8 userflags; __be16 mode; __be32 dev; } __packed; #define HFSPLUS_FLG_NODUMP 0x01 #define HFSPLUS_FLG_IMMUTABLE 0x02 #define HFSPLUS_FLG_APPEND 0x04 /* A single contiguous area of a file */ struct hfsplus_extent { __be32 start_block; __be32 block_count; } __packed; typedef struct hfsplus_extent hfsplus_extent_rec[8]; /* Information for a "Fork" in a file */ struct hfsplus_fork_raw { __be64 total_size; __be32 clump_size; __be32 total_blocks; hfsplus_extent_rec extents; } __packed; /* HFS+ Volume Header */ struct hfsplus_vh { __be16 signature; __be16 version; __be32 attributes; __be32 last_mount_vers; u32 reserved; __be32 create_date; __be32 modify_date; __be32 backup_date; __be32 checked_date; __be32 file_count; __be32 folder_count; __be32 blocksize; __be32 total_blocks; __be32 free_blocks; __be32 next_alloc; __be32 rsrc_clump_sz; __be32 data_clump_sz; hfsplus_cnid next_cnid; __be32 write_count; __be64 encodings_bmp; u32 finder_info[8]; struct hfsplus_fork_raw alloc_file; struct hfsplus_fork_raw ext_file; struct hfsplus_fork_raw cat_file; struct hfsplus_fork_raw attr_file; struct hfsplus_fork_raw start_file; } __packed; /* 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_NODEID_REUSED (1 << 12) #define HFSPLUS_VOL_JOURNALED (1 << 13) #define HFSPLUS_VOL_SOFTLOCK (1 << 15) #define HFSPLUS_VOL_UNUSED_NODE_FIX (1 << 31) /* HFS+ BTree node descriptor */ struct hfs_bnode_desc { __be32 next; __be32 prev; s8 type; u8 height; __be16 num_recs; u16 reserved; } __packed; /* HFS+ BTree node types */ #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 */ /* HFS+ BTree header */ struct hfs_btree_header_rec { __be16 depth; __be32 root; __be32 leaf_count; __be32 leaf_head; __be32 leaf_tail; __be16 node_size; __be16 max_key_len; __be32 node_count; __be32 free_nodes; u16 reserved1; __be32 clump_size; u8 btree_type; u8 key_type; __be32 attributes; u32 reserved3[16]; } __packed; /* BTree attributes */ #define HFS_TREE_BIGKEYS 2 #define HFS_TREE_VARIDXKEYS 4 /* HFS+ BTree misc info */ #define HFSPLUS_TREE_HEAD 0 #define HFSPLUS_NODE_MXSZ 32768 #define HFSPLUS_ATTR_TREE_NODE_SIZE 8192 #define HFSPLUS_BTREE_HDR_NODE_RECS_COUNT 3 #define HFSPLUS_BTREE_HDR_USER_BYTES 128 /* 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 */ /* btree key type */ #define HFSPLUS_KEY_CASEFOLDING 0xCF /* case-insensitive */ #define HFSPLUS_KEY_BINARY 0xBC /* case-sensitive */ /* HFS+ catalog entry key */ struct hfsplus_cat_key { __be16 key_len; hfsplus_cnid parent; struct hfsplus_unistr name; } __packed; #define HFSPLUS_CAT_KEYLEN (sizeof(struct hfsplus_cat_key)) /* Structs from hfs.h */ struct hfsp_point { __be16 v; __be16 h; } __packed; struct hfsp_rect { __be16 top; __be16 left; __be16 bottom; __be16 right; } __packed; /* HFS directory info (stolen from hfs.h */ struct DInfo { struct hfsp_rect frRect; __be16 frFlags; struct hfsp_point frLocation; __be16 frView; } __packed; struct DXInfo { struct hfsp_point frScroll; __be32 frOpenChain; __be16 frUnused; __be16 frComment; __be32 frPutAway; } __packed; /* HFS+ folder data (part of an hfsplus_cat_entry) */ struct hfsplus_cat_folder { __be16 type; __be16 flags; __be32 valence; hfsplus_cnid id; __be32 create_date; __be32 content_mod_date; __be32 attribute_mod_date; __be32 access_date; __be32 backup_date; struct hfsplus_perm permissions; struct DInfo user_info; struct DXInfo finder_info; __be32 text_encoding; __be32 subfolders; /* Subfolder count in HFSX. Reserved in HFS+. */ } __packed; /* HFS file info (stolen from hfs.h) */ struct FInfo { __be32 fdType; __be32 fdCreator; __be16 fdFlags; struct hfsp_point fdLocation; __be16 fdFldr; } __packed; struct FXInfo { __be16 fdIconID; u8 fdUnused[8]; __be16 fdComment; __be32 fdPutAway; } __packed; /* HFS+ file data (part of a cat_entry) */ struct hfsplus_cat_file { __be16 type; __be16 flags; u32 reserved1; hfsplus_cnid id; __be32 create_date; __be32 content_mod_date; __be32 attribute_mod_date; __be32 access_date; __be32 backup_date; struct hfsplus_perm permissions; struct FInfo user_info; struct FXInfo finder_info; __be32 text_encoding; u32 reserved2; struct hfsplus_fork_raw data_fork; struct hfsplus_fork_raw rsrc_fork; } __packed; /* File and folder flag bits */ #define HFSPLUS_FILE_LOCKED 0x0001 #define HFSPLUS_FILE_THREAD_EXISTS 0x0002 #define HFSPLUS_XATTR_EXISTS 0x0004 #define HFSPLUS_ACL_EXISTS 0x0008 #define HFSPLUS_HAS_FOLDER_COUNT 0x0010 /* Folder has subfolder count * (HFSX only) */ /* HFS+ catalog thread (part of a cat_entry) */ struct hfsplus_cat_thread { __be16 type; s16 reserved; hfsplus_cnid parentID; struct hfsplus_unistr nodeName; } __packed; #define HFSPLUS_MIN_THREAD_SZ 10 /* A data record in the catalog tree */ typedef union { __be16 type; struct hfsplus_cat_folder folder; struct hfsplus_cat_file file; struct 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 */ struct hfsplus_ext_key { __be16 key_len; u8 fork_type; u8 pad; hfsplus_cnid cnid; __be32 start_block; } __packed; #define HFSPLUS_EXT_KEYLEN sizeof(struct hfsplus_ext_key) #define HFSPLUS_XATTR_FINDER_INFO_NAME "com.apple.FinderInfo" #define HFSPLUS_XATTR_ACL_NAME "com.apple.system.Security" #define HFSPLUS_ATTR_INLINE_DATA 0x10 #define HFSPLUS_ATTR_FORK_DATA 0x20 #define HFSPLUS_ATTR_EXTENTS 0x30 /* HFS+ attributes tree key */ struct hfsplus_attr_key { __be16 key_len; __be16 pad; hfsplus_cnid cnid; __be32 start_block; struct hfsplus_attr_unistr key_name; } __packed; #define HFSPLUS_ATTR_KEYLEN sizeof(struct hfsplus_attr_key) /* HFS+ fork data attribute */ struct hfsplus_attr_fork_data { __be32 record_type; __be32 reserved; struct hfsplus_fork_raw the_fork; } __packed; /* HFS+ extension attribute */ struct hfsplus_attr_extents { __be32 record_type; __be32 reserved; struct hfsplus_extent extents; } __packed; #define HFSPLUS_MAX_INLINE_DATA_SIZE 3802 /* HFS+ attribute inline data */ struct hfsplus_attr_inline_data { __be32 record_type; __be32 reserved1; u8 reserved2[6]; __be16 length; u8 raw_bytes[HFSPLUS_MAX_INLINE_DATA_SIZE]; } __packed; /* A data record in the attributes tree */ typedef union { __be32 record_type; struct hfsplus_attr_fork_data fork_data; struct hfsplus_attr_extents extents; struct hfsplus_attr_inline_data inline_data; } __packed hfsplus_attr_entry; /* HFS+ generic BTree key */ typedef union { __be16 key_len; struct hfsplus_cat_key cat; struct hfsplus_ext_key ext; struct hfsplus_attr_key attr; } __packed hfsplus_btree_key; #endif