#include <Files.h>

typedef struct VCB { Size Offset Description

struct QElem * qLink; 4 0 Address of next queue element

(0=last)

short qType; 2 4 Always fsQType (5)

short vcbFlags; 2 6 Bit 15=1 when volume needs

flushing (dirty)

unsigned short vcbSigWord; 2 8 File sys signature: 0x4244=HFS,

0xD2D7 = flat

unsigned long vcbCrDate; 4 10 Date/Time of initialization

unsigned long vcbLsMod; 4 14 Date/Time of last modification ﬁ*

short vcbAtrb; 2 18 Volume Attributes

unsigned short vcbNmFls; 2 20 Number of files in the root directory

short vcbVBMSt; 2 22 Sector of start of volume bit map ﬁ*

short vcbAllocPtr; 2 24 ( internal: start looking for free

space here) ﬁ*

unsigned short vcbNmAlBlks; 2 26 Total allocation blocks on volume *

long vcbAlBlkSiz; 4 28 Size of an allocation block, in bytes

long vcbClpSiz; 4 32 Default clump size, in bytes

short vcbAlBlSt; 2 36 First sector re presented in bit map

(flat vols)

long vcbNxtCNID; 4 38 Next serial number for new file or

dir ﬁ*

unsigned short vcbFreeBks; 2 42 Number of unused allocation blocks

Str27 vcbVN; 28 44 Length-prefixed volume name

short vcbDrvNum; 2 72 Drive number

short vcbDRefNum; 2 74 Driver reference number

short vcbFSID; 2 76 File system ID (0=native;

else=external)

short vcbVRefNum; 2 78 Volume reference number

Ptr vcbMAdr; 4 80 Address in memory of block bit map

Ptr vcbBufAdr; 4 84 Address of volume I/O buffer

short vcbMLen; 2 88 Size of block bit map, in bytes

short vcbDirIndex; 2 90 (used internally)

short vcbDirBlk; 2 92 (used internally) (* last field if

MSF present)

unsigned long vcbVolBkUp; 4 94 Date/Time of last backup

unsigned short vcbVSeqNum; 2 98 Sequence number (if this is a backup

diskette)

long vcbWrCnt; 4 100 Volume write count

long vcbXTClpSiz; 4 104 Clump size of extents tree file

long vcbCTClpSiz; 4 108 Clump size of catalog tree file

unsigned short vcbNmRtDirs; 2 112 Number of directories in the root

long vcbFilCnt; 4 114 Total number of files on the volume

long vcbDirCnt; 4 118 Total number of directories on the

volume

long vcbFndrInfo[8]; 32 122 Data used by Finder

unsigned short vcbCtlCSiz; 2 158 Size of common cache for vol info

(undoc'ed)

unsigned short vcbXTAlBlks; 2 160 Size of extents tree file, in blocks

unsigned short vcbCTAlBlks; 2 162 Size of catalog tree file, in blocks

short vcbXTRef; 2 164 Path reference number of extents

tree file

short vcbCTRef; 2 166 Path reference number of catalog

tree file

Ptr vcbCtlBuf; 4 168 Address of extents and catalog tree

caches

long vcbDirIDM; 4 172 dirID of directory last searched

short vcbOffsM; 2 176 Offspring index at last search

} VCB ; 178