patch-2.4.22 linux-2.4.22/fs/hfsplus/hfsplus_raw.h

• Lines: 322
• Date: 2003-08-25 04:44:43.000000000 -0700
• Orig file: linux-2.4.21/fs/hfsplus/hfsplus_raw.h
• Orig date: 1969-12-31 16:00:00.000000000 -0800

diff -urN linux-2.4.21/fs/hfsplus/hfsplus_raw.h linux-2.4.22/fs/hfsplus/hfsplus_raw.h
@@ -0,0 +1,321 @@
+/*
+ *  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