/* * Copyright 2000, International Business Machines Corporation and others. * All Rights Reserved. * * This software has been released under the terms of the IBM Public * License. For details, see the LICENSE file in the top-level source * directory or online at http://www.openafs.org/dl/license10.html */ #ifndef AFS_SRC_BUBASICS_BUTM_H #define AFS_SRC_BUBASICS_BUTM_H #include #include struct blockMark { int count; /* actual number of bytes valid in the block */ afs_int32 magic; afs_int32 spare1; afs_int32 spare2; afs_int32 spare3; afs_int32 spare4; }; /* The size of a tapeblock is 16KB: contains header info and data */ #define BUTM_BLOCKSIZE 16384 #define BUTM_HDRSIZE ((5*sizeof(afs_int32)) + sizeof(int)) /* sizeof blockMark */ #define BUTM_BLKSIZE (BUTM_BLOCKSIZE - BUTM_HDRSIZE) struct butm_tapeLabel; struct butm_tapeInfo { afs_int32 structVersion; struct { afs_int32(*mount) (struct butm_tapeInfo *, char *); afs_int32(*dismount) (struct butm_tapeInfo *); afs_int32(*create) (struct butm_tapeInfo *, struct butm_tapeLabel *, afs_int32); afs_int32(*readLabel) (struct butm_tapeInfo *, struct butm_tapeLabel *, afs_int32); afs_int32(*seek) (struct butm_tapeInfo *, afs_int32); afs_int32(*seekEODump) (struct butm_tapeInfo *, afs_int32); afs_int32(*readFileBegin) (struct butm_tapeInfo *); afs_int32(*readFileData) (struct butm_tapeInfo *, char *, int len, int *); afs_int32(*readFileEnd) (struct butm_tapeInfo *); afs_int32(*writeFileBegin) (struct butm_tapeInfo *); afs_int32(*writeFileData) (struct butm_tapeInfo *, char *, afs_int32, afs_int32); afs_int32(*writeFileEnd) (struct butm_tapeInfo *); afs_int32(*writeEOT) (struct butm_tapeInfo *); afs_int32(*setSize) (struct butm_tapeInfo *, afs_uint32); afs_int32(*getSize) (struct butm_tapeInfo *, afs_uint32 *); } ops; char name[BU_MAXTAPELEN]; afs_int32 position; /* current position of tape */ afs_uint32 posCount; /* position in bytes of the tape */ /* the next three fields are used for modeling tape usage */ afs_uint32 nBytes; /* number of bytes written */ afs_uint32 kBytes; /* number of Kbytes written */ afs_int32 nRecords; /* number of records written */ afs_int32 nFiles; /* number of files written */ /* These fields provide the coefficients for the above variables */ afs_int32 recordSize; /* bytes per record */ afs_uint32 tapeSize; /* length of tape */ afs_int32 coefBytes; /* length multiplier for bytes */ afs_int32 coefRecords; /* ditto records */ afs_int32 coefFiles; /* ditto files */ int simultaneousTapes; /* number of tapes mounted simultaneously */ int status; /* status of tape */ int flags; /* e.g. read-only, sequential */ char *tcRock; /* for random tape coordinator storage */ char *tmRock; /* for random tape module storage */ afs_int32 sizeflags; /* What the units of tape size are. */ afs_int32 debug; /* print debugging info */ afs_int32 error; /* Error code from butm module */ afs_int32 spare[8]; }; struct tapeConfig { char device[256]; afs_uint32 capacity; afs_int32 fileMarkSize; /* size of file marks, in bytes */ afs_int32 portOffset; }; /* returns answer in bytes */ #define butm_remainingSpace(i) (1024*((i)->tapeSize - (1024*(i)->kBytes*(i)->coefBytes + (i)->Bytes*(i)->coefBytes ))) /* returns answer in kbytes */ #define butm_remainingKSpace(i) ((i)->tapeSize - ((i)->kBytes*(i)->coefBytes )) #define BUTM_STATUS_OFFLINE (1<<0) /* tape not mounted */ #define BUTM_STATUS_TAPEERROR (1<<1) /* tape error encountered */ #define BUTM_STATUS_WRITEERROR (1<<2) /* tape error during write */ #define BUTM_STATUS_READERROR (1<<3) /* tape error during read */ #define BUTM_STATUS_SEEKERROR (1<<4) /* tape error during positioning */ #define BUTM_STATUS_EOF (1<<5) /* tape at EOF */ #define BUTM_STATUS_EOD (1<<6) /* end of tape reached */ #define BUTM_FLAGS_READONLY (1<<0) /* tape mounted read-only */ #define BUTM_FLAGS_SEQUENTIAL (1<<1) /* tape is sequential access: sort positions */ struct butm_tapeLabel { afs_int32 structVersion; /* structure version number */ Date creationTime; /* when tape was first labeled */ Date expirationDate; /* when tape can be relabelled */ char AFSName[BU_MAXTAPELEN]; /* AFS assigned tape name */ struct ktc_principal creator; /* person creating tape */ char cell[BU_MAXCELLLEN]; /* cell which owns tape. */ afs_uint32 dumpid; /* which dump on this tape */ afs_int32 useCount; /* # times written */ afs_int32 spare[8]; char comment[96]; char pName[BU_MAXTAPELEN]; /* permanent user assigned tape name */ afs_uint32 size; char dumpPath[BU_MAX_DUMP_PATH]; /* dump schedule path name */ }; #define TNAME(labelptr) \ ( strcmp((labelptr)->pName,"") ? (labelptr)->pName : \ ( strcmp((labelptr)->AFSName,"") ? (labelptr)->AFSName : "" ) ) #define TAPENAME(tapename, name, dbDumpId) \ if (!strcmp("", name)) \ sprintf(tapename, ""); \ else if (dbDumpId == 0) \ sprintf(tapename, "%s", name); \ else \ sprintf(tapename, "%s (%u)", name, dbDumpId); #define LABELNAME(tapename, labelptr) \ TAPENAME(tapename, TNAME(labelptr), (labelptr)->dumpid) /* now the procedure macros */ #define butm_Mount(i,t) (*((i)->ops.mount))(i,t) #define butm_Dismount(i) (*((i)->ops.dismount))(i) #define butm_Create(i,l,r) (*((i)->ops.create))(i,l,r) #define butm_ReadLabel(i,l,r) (*((i)->ops.readLabel))(i,l,r) #define butm_Seek(i,p) (*((i)->ops.seek))(i,p) #define butm_SeekEODump(i,p) (*((i)->ops.seekEODump))(i,p) #define butm_ReadFileBegin(i) (*((i)->ops.readFileBegin))(i) #define butm_ReadFileData(i,d,l,n) (*((i)->ops.readFileData))(i,d,l,n) #define butm_ReadFileEnd(i) (*((i)->ops.readFileEnd))(i) #define butm_WriteFileBegin(i) (*((i)->ops.writeFileBegin))(i) #define butm_WriteFileData(i,d,b,l) (*((i)->ops.writeFileData))(i,d,b,l) #define butm_WriteFileEnd(i) (*((i)->ops.writeFileEnd))(i) #define butm_WriteEOT(i) (*((i)->ops.writeEOT))(i) #define butm_SetSize(i,s) (*((i)->ops.setSize))(i,s) #define butm_GetSize(i,s) (*((i)->ops.getSize))(i,s) #endif