/* * linux/fs/hfs/hfs.h * * Copyright (C) 1995-1997 Paul H. Hargrove * (C) 2003 Ardis Technologies <roman@ardistech.com> * This file may be distributed under the terms of the GNU General Public License. */ #ifndef _HFS_H #define _HFS_H /* 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) */ /* 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_NAMELEN 31 /* maximum length of an HFS filename */ #define HFS_MAX_NAMELEN 128 #define HFS_MAX_VALENCE 32767U /* 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) /* Some special File ID numbers */ #define HFS_POR_CNID 1 /* Parent Of the Root */ #define HFS_ROOT_CNID 2 /* ROOT directory */ #define HFS_EXT_CNID 3 /* EXTents B-tree */ #define HFS_CAT_CNID 4 /* CATalog B-tree */ #define HFS_BAD_CNID 5 /* BAD blocks file */ #define HFS_ALLOC_CNID 6 /* ALLOCation file (HFS+) */ #define HFS_START_CNID 7 /* STARTup file (HFS+) */ #define HFS_ATTR_CNID 8 /* ATTRibutes file (HFS+) */ #define HFS_EXCH_CNID 15 /* ExchangeFiles temp id */ #define HFS_FIRSTUSER_CNID 16 /* 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 /*======== HFS structures as they appear on the disk ========*/ /* Pascal-style string of up to 31 characters */ struct hfs_name { u8 len; u8 name[HFS_NAMELEN]; } __packed; struct hfs_point { __be16 v; __be16 h; } __packed; struct hfs_rect { __be16 top; __be16 left; __be16 bottom; __be16 right; } __packed; struct hfs_finfo { __be32 fdType; __be32 fdCreator; __be16 fdFlags; struct hfs_point fdLocation; __be16 fdFldr; } __packed; struct hfs_fxinfo { __be16 fdIconID; u8 fdUnused[8]; __be16 fdComment; __be32 fdPutAway; } __packed; struct hfs_dinfo { struct hfs_rect frRect; __be16 frFlags; struct hfs_point frLocation; __be16 frView; } __packed; struct hfs_dxinfo { struct hfs_point frScroll; __be32 frOpenChain; __be16 frUnused; __be16 frComment; __be32 frPutAway; } __packed; 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; /* Cast to a pointer to a generic bkey */ #define HFS_BKEY(X) (((void)((X)->KeyLen)), ((struct hfs_bkey *)(X))) /* 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; /* 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; 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; struct hfs_extent { __be16 block; __be16 count; }; typedef struct hfs_extent hfs_extent_rec[3]; /* 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; 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; /*======== Data structures kept in memory ========*/ struct hfs_readdir_data { struct list_head list; struct file *file; struct hfs_cat_key key; }; #endifOverall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 446 | 51.44% | 4 | 44.44% |
| Andrew Morton | 341 | 39.33% | 1 | 11.11% |
| Al Viro | 68 | 7.84% | 2 | 22.22% |
| Eric Sandeen | 8 | 0.92% | 1 | 11.11% |
| Roman Zippel | 4 | 0.46% | 1 | 11.11% |
| Total | 867 | 100.00% | 9 | 100.00% |