rom/filesys/afs/volumes.h

   1 #ifndef VOLUMES_H
   2 #define VOLUMES_H
   3
   4 /*
   5     Copyright © 1995-2010, The AROS Development Team. All rights reserved.
   6     $Id$
   7 */
   8
   9 #include "os.h"
  10 #include "filehandles.h"
  11 #include "cache.h"
  12
  13 struct Volume {
  14         struct Node ln;
  15         struct Device *device;       /* the handler this volume uses */
  16         struct DeviceList devicelist __attribute__((aligned(4))); /* BPTR compatible */
  17         struct DosList *volumenode;
  18         ULONG SizeBlock;             /* Block size in words */
  19         ULONG blocksectors;          /* nr of sectors per block */
  20         ULONG sectorsize;            /* nr of bytes per sector */
  21
  22         struct AfsHandle *locklist;
  23         struct AfsHandle ah;         /* root handle (unfilled except header_block) */
  24         ULONG unit;
  25         struct IOHandle ioh;
  26         struct BlockCache *blockcache;
  27         LONG numbuffers;
  28         ULONG cachecounter;           /* Keeps track of cache usage */
  29         ULONG state;                 /* Read-only, read/write or validating */
  30         ULONG key;                   /* Lock key */
  31         ULONG inhibitcounter;
  32
  33         ULONG usedblockscount;       /* nr of used blocks */
  34         ULONG countblocks;           /* nr of blocks in filesystem */
  35         ULONG rootblock;             /* rootblock position */
  36         ULONG startblock;            /* absolute nr of start block on whole HD */
  37         ULONG lastblock;             /* absolute nr of last block on whole HD */
  38         ULONG dostype;
  39         ULONG bitmapblockpointers[25];
  40         ULONG bitmapextensionblock;
  41
  42         struct BlockCache *bitmapblock; /* last bitmap block used for marking */
  43         ULONG bstartblock;              /* first block marked in "bitmapblock" */
  44         ULONG lastextensionblock; /* last used extensionblock (0=volume->bitmapblocks) */
  45         ULONG lastposition;             /* last position in extensionblock */
  46         ULONG lastaccess;               /* last marked block */
  47
  48         UWORD bootblocks;
  49         UBYTE dosflags;
  50 };
  51
  52 BOOL mediumPresent(struct IOHandle *);
  53 struct Volume *initVolume(struct AFSBase *, struct Device *, CONST_STRPTR,
  54         ULONG, ULONG flags, struct DosEnvec *, LONG *error);
  55 void uninitVolume(struct AFSBase *, struct Volume *);
  56 LONG newMedium(struct AFSBase *, struct Volume *);
  57 LONG writeprotectVolume(struct AFSBase *, struct Volume *, BOOL on, ULONG key);
  58
  59 #endif
  60