409 строки
9.5 KiB
C
409 строки
9.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* linux/include/linux/hfsplus_raw.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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* Format of structures on disk
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* Information taken from Apple Technote #1150 (HFS Plus Volume Format)
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*
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*/
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#ifndef _LINUX_HFSPLUS_RAW_H
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#define _LINUX_HFSPLUS_RAW_H
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#include <linux/types.h>
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/* Some constants */
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#define HFSPLUS_SECTOR_SIZE 512
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#define HFSPLUS_SECTOR_SHIFT 9
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#define HFSPLUS_VOLHEAD_SECTOR 2
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#define HFSPLUS_VOLHEAD_SIG 0x482b
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#define HFSPLUS_VOLHEAD_SIGX 0x4858
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#define HFSPLUS_SUPER_MAGIC 0x482b
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#define HFSPLUS_MIN_VERSION 4
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#define HFSPLUS_CURRENT_VERSION 5
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#define HFSP_WRAP_MAGIC 0x4244
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#define HFSP_WRAP_ATTRIB_SLOCK 0x8000
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#define HFSP_WRAP_ATTRIB_SPARED 0x0200
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#define HFSP_WRAPOFF_SIG 0x00
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#define HFSP_WRAPOFF_ATTRIB 0x0A
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#define HFSP_WRAPOFF_ABLKSIZE 0x14
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#define HFSP_WRAPOFF_ABLKSTART 0x1C
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#define HFSP_WRAPOFF_EMBEDSIG 0x7C
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#define HFSP_WRAPOFF_EMBEDEXT 0x7E
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#define HFSP_HIDDENDIR_NAME \
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"\xe2\x90\x80\xe2\x90\x80\xe2\x90\x80\xe2\x90\x80HFS+ Private Data"
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#define HFSP_HARDLINK_TYPE 0x686c6e6b /* 'hlnk' */
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#define HFSP_HFSPLUS_CREATOR 0x6866732b /* 'hfs+' */
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#define HFSP_SYMLINK_TYPE 0x736c6e6b /* 'slnk' */
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#define HFSP_SYMLINK_CREATOR 0x72686170 /* 'rhap' */
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#define HFSP_MOUNT_VERSION 0x482b4c78 /* 'H+Lx' */
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/* Structures used on disk */
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typedef __be32 hfsplus_cnid;
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typedef __be16 hfsplus_unichr;
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#define HFSPLUS_MAX_STRLEN 255
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#define HFSPLUS_ATTR_MAX_STRLEN 127
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/* A "string" as used in filenames, etc. */
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struct hfsplus_unistr {
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__be16 length;
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hfsplus_unichr unicode[HFSPLUS_MAX_STRLEN];
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} __packed;
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/*
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* A "string" is used in attributes file
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* for name of extended attribute
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*/
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struct hfsplus_attr_unistr {
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__be16 length;
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hfsplus_unichr unicode[HFSPLUS_ATTR_MAX_STRLEN];
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} __packed;
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/* POSIX permissions */
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struct hfsplus_perm {
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__be32 owner;
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__be32 group;
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u8 rootflags;
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u8 userflags;
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__be16 mode;
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__be32 dev;
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} __packed;
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#define HFSPLUS_FLG_NODUMP 0x01
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#define HFSPLUS_FLG_IMMUTABLE 0x02
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#define HFSPLUS_FLG_APPEND 0x04
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/* A single contiguous area of a file */
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struct hfsplus_extent {
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__be32 start_block;
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__be32 block_count;
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} __packed;
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typedef struct hfsplus_extent hfsplus_extent_rec[8];
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/* Information for a "Fork" in a file */
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struct hfsplus_fork_raw {
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__be64 total_size;
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__be32 clump_size;
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__be32 total_blocks;
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hfsplus_extent_rec extents;
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} __packed;
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/* HFS+ Volume Header */
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struct hfsplus_vh {
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__be16 signature;
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__be16 version;
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__be32 attributes;
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__be32 last_mount_vers;
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u32 reserved;
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__be32 create_date;
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__be32 modify_date;
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__be32 backup_date;
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__be32 checked_date;
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__be32 file_count;
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__be32 folder_count;
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__be32 blocksize;
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__be32 total_blocks;
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__be32 free_blocks;
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__be32 next_alloc;
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__be32 rsrc_clump_sz;
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__be32 data_clump_sz;
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hfsplus_cnid next_cnid;
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__be32 write_count;
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__be64 encodings_bmp;
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u32 finder_info[8];
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struct hfsplus_fork_raw alloc_file;
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struct hfsplus_fork_raw ext_file;
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struct hfsplus_fork_raw cat_file;
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struct hfsplus_fork_raw attr_file;
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struct hfsplus_fork_raw start_file;
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} __packed;
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/* HFS+ volume attributes */
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#define HFSPLUS_VOL_UNMNT (1 << 8)
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#define HFSPLUS_VOL_SPARE_BLK (1 << 9)
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#define HFSPLUS_VOL_NOCACHE (1 << 10)
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#define HFSPLUS_VOL_INCNSTNT (1 << 11)
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#define HFSPLUS_VOL_NODEID_REUSED (1 << 12)
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#define HFSPLUS_VOL_JOURNALED (1 << 13)
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#define HFSPLUS_VOL_SOFTLOCK (1 << 15)
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#define HFSPLUS_VOL_UNUSED_NODE_FIX (1 << 31)
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/* HFS+ BTree node descriptor */
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struct hfs_bnode_desc {
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__be32 next;
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__be32 prev;
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s8 type;
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u8 height;
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__be16 num_recs;
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u16 reserved;
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} __packed;
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/* HFS+ BTree node types */
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#define HFS_NODE_INDEX 0x00 /* An internal (index) node */
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#define HFS_NODE_HEADER 0x01 /* The tree header node (node 0) */
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#define HFS_NODE_MAP 0x02 /* Holds part of the bitmap of used nodes */
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#define HFS_NODE_LEAF 0xFF /* A leaf (ndNHeight==1) node */
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/* HFS+ BTree header */
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struct hfs_btree_header_rec {
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__be16 depth;
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__be32 root;
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__be32 leaf_count;
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__be32 leaf_head;
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__be32 leaf_tail;
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__be16 node_size;
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__be16 max_key_len;
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__be32 node_count;
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__be32 free_nodes;
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u16 reserved1;
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__be32 clump_size;
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u8 btree_type;
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u8 key_type;
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__be32 attributes;
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u32 reserved3[16];
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} __packed;
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/* BTree attributes */
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#define HFS_TREE_BIGKEYS 2
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#define HFS_TREE_VARIDXKEYS 4
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/* HFS+ BTree misc info */
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#define HFSPLUS_TREE_HEAD 0
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#define HFSPLUS_NODE_MXSZ 32768
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#define HFSPLUS_ATTR_TREE_NODE_SIZE 8192
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#define HFSPLUS_BTREE_HDR_NODE_RECS_COUNT 3
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#define HFSPLUS_BTREE_HDR_USER_BYTES 128
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/* Some special File ID numbers (stolen from hfs.h) */
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#define HFSPLUS_POR_CNID 1 /* Parent Of the Root */
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#define HFSPLUS_ROOT_CNID 2 /* ROOT directory */
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#define HFSPLUS_EXT_CNID 3 /* EXTents B-tree */
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#define HFSPLUS_CAT_CNID 4 /* CATalog B-tree */
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#define HFSPLUS_BAD_CNID 5 /* BAD blocks file */
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#define HFSPLUS_ALLOC_CNID 6 /* ALLOCation file */
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#define HFSPLUS_START_CNID 7 /* STARTup file */
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#define HFSPLUS_ATTR_CNID 8 /* ATTRibutes file */
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#define HFSPLUS_EXCH_CNID 15 /* ExchangeFiles temp id */
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#define HFSPLUS_FIRSTUSER_CNID 16 /* first available user id */
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/* btree key type */
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#define HFSPLUS_KEY_CASEFOLDING 0xCF /* case-insensitive */
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#define HFSPLUS_KEY_BINARY 0xBC /* case-sensitive */
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/* HFS+ catalog entry key */
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struct hfsplus_cat_key {
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__be16 key_len;
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hfsplus_cnid parent;
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struct hfsplus_unistr name;
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} __packed;
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#define HFSPLUS_CAT_KEYLEN (sizeof(struct hfsplus_cat_key))
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/* Structs from hfs.h */
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struct hfsp_point {
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__be16 v;
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__be16 h;
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} __packed;
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struct hfsp_rect {
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__be16 top;
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__be16 left;
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__be16 bottom;
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__be16 right;
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} __packed;
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/* HFS directory info (stolen from hfs.h */
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struct DInfo {
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struct hfsp_rect frRect;
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__be16 frFlags;
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struct hfsp_point frLocation;
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__be16 frView;
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} __packed;
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struct DXInfo {
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struct hfsp_point frScroll;
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__be32 frOpenChain;
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__be16 frUnused;
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__be16 frComment;
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__be32 frPutAway;
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} __packed;
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/* HFS+ folder data (part of an hfsplus_cat_entry) */
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struct hfsplus_cat_folder {
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__be16 type;
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__be16 flags;
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__be32 valence;
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hfsplus_cnid id;
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__be32 create_date;
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__be32 content_mod_date;
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__be32 attribute_mod_date;
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__be32 access_date;
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__be32 backup_date;
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struct hfsplus_perm permissions;
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struct DInfo user_info;
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struct DXInfo finder_info;
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__be32 text_encoding;
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__be32 subfolders; /* Subfolder count in HFSX. Reserved in HFS+. */
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} __packed;
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/* HFS file info (stolen from hfs.h) */
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struct FInfo {
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__be32 fdType;
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__be32 fdCreator;
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__be16 fdFlags;
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struct hfsp_point fdLocation;
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__be16 fdFldr;
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} __packed;
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struct FXInfo {
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__be16 fdIconID;
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u8 fdUnused[8];
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__be16 fdComment;
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__be32 fdPutAway;
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} __packed;
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/* HFS+ file data (part of a cat_entry) */
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struct hfsplus_cat_file {
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__be16 type;
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__be16 flags;
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u32 reserved1;
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hfsplus_cnid id;
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__be32 create_date;
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__be32 content_mod_date;
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__be32 attribute_mod_date;
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__be32 access_date;
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__be32 backup_date;
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struct hfsplus_perm permissions;
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struct FInfo user_info;
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struct FXInfo finder_info;
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__be32 text_encoding;
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u32 reserved2;
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struct hfsplus_fork_raw data_fork;
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struct hfsplus_fork_raw rsrc_fork;
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} __packed;
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/* File and folder flag bits */
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#define HFSPLUS_FILE_LOCKED 0x0001
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#define HFSPLUS_FILE_THREAD_EXISTS 0x0002
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#define HFSPLUS_XATTR_EXISTS 0x0004
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#define HFSPLUS_ACL_EXISTS 0x0008
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#define HFSPLUS_HAS_FOLDER_COUNT 0x0010 /* Folder has subfolder count
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* (HFSX only) */
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/* HFS+ catalog thread (part of a cat_entry) */
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struct hfsplus_cat_thread {
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__be16 type;
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s16 reserved;
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hfsplus_cnid parentID;
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struct hfsplus_unistr nodeName;
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} __packed;
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#define HFSPLUS_MIN_THREAD_SZ 10
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/* A data record in the catalog tree */
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typedef union {
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__be16 type;
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struct hfsplus_cat_folder folder;
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struct hfsplus_cat_file file;
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struct hfsplus_cat_thread thread;
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} __packed hfsplus_cat_entry;
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/* HFS+ catalog entry type */
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#define HFSPLUS_FOLDER 0x0001
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#define HFSPLUS_FILE 0x0002
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#define HFSPLUS_FOLDER_THREAD 0x0003
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#define HFSPLUS_FILE_THREAD 0x0004
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/* HFS+ extents tree key */
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struct hfsplus_ext_key {
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__be16 key_len;
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u8 fork_type;
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u8 pad;
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hfsplus_cnid cnid;
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__be32 start_block;
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} __packed;
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#define HFSPLUS_EXT_KEYLEN sizeof(struct hfsplus_ext_key)
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#define HFSPLUS_XATTR_FINDER_INFO_NAME "com.apple.FinderInfo"
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#define HFSPLUS_XATTR_ACL_NAME "com.apple.system.Security"
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#define HFSPLUS_ATTR_INLINE_DATA 0x10
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#define HFSPLUS_ATTR_FORK_DATA 0x20
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#define HFSPLUS_ATTR_EXTENTS 0x30
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/* HFS+ attributes tree key */
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struct hfsplus_attr_key {
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__be16 key_len;
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__be16 pad;
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hfsplus_cnid cnid;
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__be32 start_block;
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struct hfsplus_attr_unistr key_name;
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} __packed;
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#define HFSPLUS_ATTR_KEYLEN sizeof(struct hfsplus_attr_key)
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/* HFS+ fork data attribute */
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struct hfsplus_attr_fork_data {
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__be32 record_type;
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__be32 reserved;
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struct hfsplus_fork_raw the_fork;
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} __packed;
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/* HFS+ extension attribute */
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struct hfsplus_attr_extents {
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__be32 record_type;
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__be32 reserved;
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struct hfsplus_extent extents;
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} __packed;
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#define HFSPLUS_MAX_INLINE_DATA_SIZE 3802
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/* HFS+ attribute inline data */
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struct hfsplus_attr_inline_data {
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__be32 record_type;
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__be32 reserved1;
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u8 reserved2[6];
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__be16 length;
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u8 raw_bytes[HFSPLUS_MAX_INLINE_DATA_SIZE];
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} __packed;
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/* A data record in the attributes tree */
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typedef union {
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__be32 record_type;
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struct hfsplus_attr_fork_data fork_data;
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struct hfsplus_attr_extents extents;
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struct hfsplus_attr_inline_data inline_data;
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} __packed hfsplus_attr_entry;
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/* HFS+ generic BTree key */
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typedef union {
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__be16 key_len;
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struct hfsplus_cat_key cat;
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struct hfsplus_ext_key ext;
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struct hfsplus_attr_key attr;
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} __packed hfsplus_btree_key;
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#endif
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