| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Andrew Morton | 823 | 44.20% | 2 | 7.69% |
| Linus Torvalds (pre-git) | 480 | 25.78% | 5 | 19.23% |
| Vyacheslav Dubeyko | 335 | 17.99% | 3 | 11.54% |
| Al Viro | 132 | 7.09% | 3 | 11.54% |
| Roman Zippel | 22 | 1.18% | 3 | 11.54% |
| Kees Cook | 16 | 0.86% | 1 | 3.85% |
| Joe Perches | 15 | 0.81% | 1 | 3.85% |
| Eric Sandeen | 13 | 0.70% | 2 | 7.69% |
| Sergei Antonov | 13 | 0.70% | 2 | 7.69% |
| David Elliott | 9 | 0.48% | 1 | 3.85% |
| Matthew Garrett | 2 | 0.11% | 1 | 3.85% |
| Anton Salikhmetov | 1 | 0.05% | 1 | 3.85% |
| Greg Kroah-Hartman | 1 | 0.05% | 1 | 3.85% |
| Total | 1862 | 26 |
/* SPDX-License-Identifier: GPL-2.0 */ /* * HFS/HFS+ common definitions, inline functions, * and shared functionality. */ #ifndef _HFS_COMMON_H_ #define _HFS_COMMON_H_ #ifdef pr_fmt #undef pr_fmt #endif #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #define hfs_dbg(fmt, ...) \ pr_debug("pid %d:%s:%d %s(): " fmt, \ current->pid, __FILE__, __LINE__, __func__, ##__VA_ARGS__) \ /* * Format of structures on disk * Information taken from Apple Technote #1150 (HFS Plus Volume Format) */ /* offsets to various blocks */ #define HFS_DD_BLK 0 /* Driver Descriptor block */ #define HFS_PMAP_BLK 1 /* First block of partition map */ #define HFS_MDB_BLK 2 /* Block (w/i partition) of MDB */ /* magic numbers for various disk blocks */ #define HFS_DRVR_DESC_MAGIC 0x4552 /* "ER": driver descriptor map */ #define HFS_OLD_PMAP_MAGIC 0x5453 /* "TS": old-type partition map */ #define HFS_NEW_PMAP_MAGIC 0x504D /* "PM": new-type partition map */ #define HFS_SUPER_MAGIC 0x4244 /* "BD": HFS MDB (super block) */ #define HFS_MFS_SUPER_MAGIC 0xD2D7 /* MFS MDB (super block) */ #define HFSPLUS_VOLHEAD_SIG 0x482b #define HFSPLUS_VOLHEAD_SIGX 0x4858 #define HFSPLUS_SUPER_MAGIC 0x482b #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_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' */ #define HFSP_HIDDENDIR_NAME \ "\xe2\x90\x80\xe2\x90\x80\xe2\x90\x80\xe2\x90\x80HFS+ Private Data" /* various FIXED size parameters */ #define HFS_SECTOR_SIZE 512 /* size of an HFS sector */ #define HFS_SECTOR_SIZE_BITS 9 /* log_2(HFS_SECTOR_SIZE) */ #define HFS_MAX_VALENCE 32767U #define HFSPLUS_SECTOR_SIZE HFS_SECTOR_SIZE #define HFSPLUS_SECTOR_SHIFT HFS_SECTOR_SIZE_BITS #define HFSPLUS_VOLHEAD_SECTOR 2 #define HFSPLUS_MIN_VERSION 4 #define HFSPLUS_CURRENT_VERSION 5 #define HFS_NAMELEN 31 /* maximum length of an HFS filename */ #define HFS_MAX_NAMELEN 128 #define HFSPLUS_MAX_STRLEN 255 #define HFSPLUS_ATTR_MAX_STRLEN 127 /* Meanings of the drAtrb field of the MDB, * Reference: _Inside Macintosh: Files_ p. 2-61 */ #define HFS_SB_ATTRIB_HLOCK (1 << 7) #define HFS_SB_ATTRIB_UNMNT (1 << 8) #define HFS_SB_ATTRIB_SPARED (1 << 9) #define HFS_SB_ATTRIB_INCNSTNT (1 << 11) #define HFS_SB_ATTRIB_SLOCK (1 << 15) /* values for hfs_cat_rec.cdrType */ #define HFS_CDR_DIR 0x01 /* folder (directory) */ #define HFS_CDR_FIL 0x02 /* file */ #define HFS_CDR_THD 0x03 /* folder (directory) thread */ #define HFS_CDR_FTH 0x04 /* file thread */ /* legal values for hfs_ext_key.FkType and hfs_file.fork */ #define HFS_FK_DATA 0x00 #define HFS_FK_RSRC 0xFF /* bits in hfs_fil_entry.Flags */ #define HFS_FIL_LOCK 0x01 /* locked */ #define HFS_FIL_THD 0x02 /* file thread */ #define HFS_FIL_DOPEN 0x04 /* data fork open */ #define HFS_FIL_ROPEN 0x08 /* resource fork open */ #define HFS_FIL_DIR 0x10 /* directory (always clear) */ #define HFS_FIL_NOCOPY 0x40 /* copy-protected file */ #define HFS_FIL_USED 0x80 /* open */ /* bits in hfs_dir_entry.Flags. dirflags is 16 bits. */ #define HFS_DIR_LOCK 0x01 /* locked */ #define HFS_DIR_THD 0x02 /* directory thread */ #define HFS_DIR_INEXPFOLDER 0x04 /* in a shared area */ #define HFS_DIR_MOUNTED 0x08 /* mounted */ #define HFS_DIR_DIR 0x10 /* directory (always set) */ #define HFS_DIR_EXPFOLDER 0x20 /* share point */ /* bits hfs_finfo.fdFlags */ #define HFS_FLG_INITED 0x0100 #define HFS_FLG_LOCKED 0x1000 #define HFS_FLG_INVISIBLE 0x4000 /* Some special File ID numbers */ #define HFS_POR_CNID 1 /* Parent Of the Root */ #define HFSPLUS_POR_CNID HFS_POR_CNID #define HFS_ROOT_CNID 2 /* ROOT directory */ #define HFSPLUS_ROOT_CNID HFS_ROOT_CNID #define HFS_EXT_CNID 3 /* EXTents B-tree */ #define HFSPLUS_EXT_CNID HFS_EXT_CNID #define HFS_CAT_CNID 4 /* CATalog B-tree */ #define HFSPLUS_CAT_CNID HFS_CAT_CNID #define HFS_BAD_CNID 5 /* BAD blocks file */ #define HFSPLUS_BAD_CNID HFS_BAD_CNID #define HFS_ALLOC_CNID 6 /* ALLOCation file (HFS+) */ #define HFSPLUS_ALLOC_CNID HFS_ALLOC_CNID #define HFS_START_CNID 7 /* STARTup file (HFS+) */ #define HFSPLUS_START_CNID HFS_START_CNID #define HFS_ATTR_CNID 8 /* ATTRibutes file (HFS+) */ #define HFSPLUS_ATTR_CNID HFS_ATTR_CNID #define HFS_EXCH_CNID 15 /* ExchangeFiles temp id */ #define HFSPLUS_EXCH_CNID HFS_EXCH_CNID #define HFS_FIRSTUSER_CNID 16 /* first available user id */ #define HFSPLUS_FIRSTUSER_CNID HFS_FIRSTUSER_CNID /*======== HFS/HFS+ structures as they appear on the disk ========*/ typedef __be32 hfsplus_cnid; typedef __be16 hfsplus_unichr; /* Pascal-style string of up to 31 characters */ struct hfs_name { u8 len; u8 name[HFS_NAMELEN]; } __packed; /* 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; struct hfs_extent { __be16 block; __be16 count; }; typedef struct hfs_extent hfs_extent_rec[3]; /* 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; struct hfs_mdb { __be16 drSigWord; /* Signature word indicating fs type */ __be32 drCrDate; /* fs creation date/time */ __be32 drLsMod; /* fs modification date/time */ __be16 drAtrb; /* fs attributes */ __be16 drNmFls; /* number of files in root directory */ __be16 drVBMSt; /* location (in 512-byte blocks) of the volume bitmap */ __be16 drAllocPtr; /* location (in allocation blocks) to begin next allocation search */ __be16 drNmAlBlks; /* number of allocation blocks */ __be32 drAlBlkSiz; /* bytes in an allocation block */ __be32 drClpSiz; /* clumpsize, the number of bytes to allocate when extending a file */ __be16 drAlBlSt; /* location (in 512-byte blocks) of the first allocation block */ __be32 drNxtCNID; /* CNID to assign to the next file or directory created */ __be16 drFreeBks; /* number of free allocation blocks */ u8 drVN[28]; /* the volume label */ __be32 drVolBkUp; /* fs backup date/time */ __be16 drVSeqNum; /* backup sequence number */ __be32 drWrCnt; /* fs write count */ __be32 drXTClpSiz; /* clumpsize for the extents B-tree */ __be32 drCTClpSiz; /* clumpsize for the catalog B-tree */ __be16 drNmRtDirs; /* number of directories in the root directory */ __be32 drFilCnt; /* number of files in the fs */ __be32 drDirCnt; /* number of directories in the fs */ u8 drFndrInfo[32]; /* data used by the Finder */ __be16 drEmbedSigWord; /* embedded volume signature */ __be32 drEmbedExtent; /* starting block number (xdrStABN) and number of allocation blocks (xdrNumABlks) occupied by embedded volume */ __be32 drXTFlSize; /* bytes in the extents B-tree */ hfs_extent_rec drXTExtRec; /* extents B-tree's first 3 extents */ __be32 drCTFlSize; /* bytes in the catalog B-tree */ hfs_extent_rec drCTExtRec; /* catalog B-tree's first 3 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) struct hfs_point { __be16 v; __be16 h; } __packed; typedef struct hfs_point hfsp_point; struct hfs_rect { __be16 top; __be16 left; __be16 bottom; __be16 right; } __packed; typedef struct hfs_rect hfsp_rect; struct hfs_finfo { __be32 fdType; __be32 fdCreator; __be16 fdFlags; struct hfs_point fdLocation; __be16 fdFldr; } __packed; typedef struct hfs_finfo FInfo; struct hfs_fxinfo { __be16 fdIconID; u8 fdUnused[8]; __be16 fdComment; __be32 fdPutAway; } __packed; typedef struct hfs_fxinfo FXInfo; struct hfs_dinfo { struct hfs_rect frRect; __be16 frFlags; struct hfs_point frLocation; __be16 frView; } __packed; typedef struct hfs_dinfo DInfo; struct hfs_dxinfo { struct hfs_point frScroll; __be32 frOpenChain; __be16 frUnused; __be16 frComment; __be32 frPutAway; } __packed; typedef struct hfs_dxinfo DXInfo; union hfs_finder_info { struct { struct hfs_finfo finfo; struct hfs_fxinfo fxinfo; } file; struct { struct hfs_dinfo dinfo; struct hfs_dxinfo dxinfo; } dir; } __packed; /* The key used in the catalog b-tree: */ struct hfs_cat_key { u8 key_len; /* number of bytes in the key */ u8 reserved; /* padding */ __be32 ParID; /* CNID of the parent dir */ struct hfs_name CName; /* The filename of the entry */ } __packed; /* 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)) /* The key used in the extents b-tree: */ struct hfs_ext_key { u8 key_len; /* number of bytes in the key */ u8 FkType; /* HFS_FK_{DATA,RSRC} */ __be32 FNum; /* The File ID of the file */ __be16 FABN; /* allocation blocks number*/ } __packed; /* 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) typedef union hfs_btree_key { u8 key_len; /* number of bytes in the key */ struct hfs_cat_key cat; struct hfs_ext_key ext; } hfs_btree_key; #define HFS_MAX_CAT_KEYLEN (sizeof(struct hfs_cat_key) - sizeof(u8)) #define HFS_MAX_EXT_KEYLEN (sizeof(struct hfs_ext_key) - sizeof(u8)) typedef union hfs_btree_key btree_key; /* The catalog record for a file */ struct hfs_cat_file { s8 type; /* The type of entry */ u8 reserved; u8 Flags; /* Flags such as read-only */ s8 Typ; /* file version number = 0 */ struct hfs_finfo UsrWds; /* data used by the Finder */ __be32 FlNum; /* The CNID */ __be16 StBlk; /* obsolete */ __be32 LgLen; /* The logical EOF of the data fork*/ __be32 PyLen; /* The physical EOF of the data fork */ __be16 RStBlk; /* obsolete */ __be32 RLgLen; /* The logical EOF of the rsrc fork */ __be32 RPyLen; /* The physical EOF of the rsrc fork */ __be32 CrDat; /* The creation date */ __be32 MdDat; /* The modified date */ __be32 BkDat; /* The last backup date */ struct hfs_fxinfo FndrInfo; /* more data for the Finder */ __be16 ClpSize; /* number of bytes to allocate when extending files */ hfs_extent_rec ExtRec; /* first extent record for the data fork */ hfs_extent_rec RExtRec; /* first extent record for the resource fork */ u32 Resrv; /* reserved by Apple */ } __packed; /* the catalog record for a directory */ struct hfs_cat_dir { s8 type; /* The type of entry */ u8 reserved; __be16 Flags; /* flags */ __be16 Val; /* Valence: number of files and dirs in the directory */ __be32 DirID; /* The CNID */ __be32 CrDat; /* The creation date */ __be32 MdDat; /* The modification date */ __be32 BkDat; /* The last backup date */ struct hfs_dinfo UsrInfo; /* data used by the Finder */ struct hfs_dxinfo FndrInfo; /* more data used by Finder */ u8 Resrv[16]; /* reserved by Apple */ } __packed; /* the catalog record for a thread */ struct hfs_cat_thread { s8 type; /* The type of entry */ u8 reserved[9]; /* reserved by Apple */ __be32 ParID; /* CNID of parent directory */ struct hfs_name CName; /* The name of this entry */ } __packed; /* A catalog tree record */ typedef union hfs_cat_rec { s8 type; /* The type of entry */ struct hfs_cat_file file; struct hfs_cat_dir dir; struct hfs_cat_thread thread; } hfs_cat_rec; /* 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 /* HFS/HFS+ BTree node descriptor */ struct hfs_bnode_desc { __be32 next; /* (V) Number of the next node at this level */ __be32 prev; /* (V) Number of the prev node at this level */ u8 type; /* (F) The type of node */ u8 height; /* (F) The level of this node (leaves=1) */ __be16 num_recs; /* (V) The number of records in this node */ u16 reserved; } __packed; /* HFS/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/HFS+ BTree header */ struct hfs_btree_header_rec { __be16 depth; /* (V) The number of levels in this B-tree */ __be32 root; /* (V) The node number of the root node */ __be32 leaf_count; /* (V) The number of leaf records */ __be32 leaf_head; /* (V) The number of the first leaf node */ __be32 leaf_tail; /* (V) The number of the last leaf node */ __be16 node_size; /* (F) The number of bytes in a node (=512) */ __be16 max_key_len; /* (F) The length of a key in an index node */ __be32 node_count; /* (V) The total number of nodes */ __be32 free_nodes; /* (V) The number of unused nodes */ u16 reserved1; __be32 clump_size; /* (F) clump size. not usually used. */ u8 btree_type; /* (F) BTree type */ u8 key_type; __be32 attributes; /* (F) attributes */ u32 reserved3[16]; } __packed; /* BTree attributes */ #define BTREE_ATTR_BADCLOSE 0x00000001 /* b-tree not closed properly. not used by hfsplus. */ #define HFS_TREE_BIGKEYS 0x00000002 /* key length is u16 instead of u8. used by hfsplus. */ #define HFS_TREE_VARIDXKEYS 0x00000004 /* variable key length instead of max key length. use din catalog b-tree but not in extents b-tree (hfsplus). */ /* 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 /* btree key type */ #define HFSPLUS_KEY_CASEFOLDING 0xCF /* case-insensitive */ #define HFSPLUS_KEY_BINARY 0xBC /* case-sensitive */ /* 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_group_attr(info, __packed, DInfo user_info; DXInfo finder_info; ); __be32 text_encoding; __be32 subfolders; /* Subfolder count in HFSX. Reserved in HFS+. */ } __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_group_attr(info, __packed, FInfo user_info; 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 #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 /* _HFS_COMMON_H_ */
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