101 lines
3.3 KiB
C
101 lines
3.3 KiB
C
extern DAB *pdabGlobalMin;
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extern DAB *pdabGlobalMax;
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ERR ErrDBOpenDatabase( PIB *ppib, CHAR *szDatabaseName, DBID *pdbid, ULONG grbit );
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ERR ErrDBCloseDatabase( PIB *ppib, DBID dbid, ULONG grbit );
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ERR ErrDBOpenDatabaseByDbid( PIB *ppib, DBID dbid );
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VOID DBCloseDatabaseByDbid( PIB *ppib, DBID dbid );
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BOOL FDatabaseInUse( DBID dbid );
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ERR ErrDBCreateDatabase( PIB *ppib, CHAR *szDatabaseName, CHAR *szConnect, DBID *pdbid, CPG cpgPrimary, ULONG grbit, SIGNATURE *psignDb );
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ERR ErrDBSetLastPage( PIB *ppib, DBID dbid );
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ERR ErrDBSetupAttachedDB(VOID);
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VOID DBISetHeaderAfterAttach( DBFILEHDR *pdbfilehdr, LGPOS lgposAttach, DBID dbid, BOOL fKeepBackupInfo );
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ERR ErrDBReadHeaderCheckConsistency( CHAR *szFileName, DBID dbid );
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ERR ErrDABCloseAllDBs( PIB *ppib );
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#define SetOpenDatabaseFlag( ppib, dbid ) \
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{ \
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((ppib)->rgcdbOpen[dbid]++); \
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Assert( ((ppib)->rgcdbOpen[dbid] > 0 ) ); \
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}
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#define ResetOpenDatabaseFlag( ppib, dbid ) \
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{ \
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Assert( ((ppib)->rgcdbOpen[dbid] > 0 ) ); \
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((ppib)->rgcdbOpen[dbid]--); \
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}
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#define FUserOpenedDatabase( ppib, dbid ) \
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((ppib)->rgcdbOpen[dbid] > 0)
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#define FLastOpen( ppib, dbid ) \
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((ppib)->rgcdbOpen[dbid] == 1)
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#define FUserDbid( dbid ) \
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(dbid > dbidTemp && dbid < dbidMax)
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#define ErrDBCheck( ppib, dbid ) \
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( FUserOpenedDatabase( ppib, dbid ) ? JET_errSuccess : JET_errInvalidDatabaseId )
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#define CheckDBID( ppib, dbid ) \
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Assert( FUserOpenedDatabase( ppib, dbid ) )
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/* Database Attribute Block
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/**/
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typedef struct _dab
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{
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PIB *ppib; /* thread that opens this DAB */
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DAB *pdabNext; /* next DAB opened by the same ppib */
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JET_GRBIT grbit; /* database open mode */
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DBID dbid; /* database id */
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} DAB;
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#define ErrDABCheck( ppibT, pdab ) \
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( ( ((DAB *)pdab) >= pdabGlobalMin && \
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((DAB *)pdab) < pdabGlobalMax && \
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(((ULONG_PTR)pdab - (ULONG_PTR)pdabGlobalMin) % sizeof(DAB) == 0) && \
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((DAB *)pdab)->ppib == (ppibT) ) ? \
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JET_errSuccess : JET_errInvalidDatabaseId )
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// Database info in DATABASES tree
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typedef struct {
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BYTE bDbid;
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BYTE bLoggable;
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/* rgchDatabaseName must be last field in structure
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/**/
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CHAR rgchDatabaseName[1];
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} DBA;
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ERR ErrDBStoreDBPath( CHAR *szDBName, CHAR **pszDBPath );
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/* bogus dbid uniqifying code
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/**/
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#define vdbidNil NULL
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typedef DAB * VDBID;
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#ifdef DISPATCHING
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#define VdbidMEMAlloc() (VDBID)PbMEMAlloc(iresDAB)
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#ifdef DEBUG /* Debug check for illegal reuse of freed vdbid */
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#define ReleaseVDbid( vdbid ) { MEMRelease( iresDAB, (BYTE *) vdbid ); vdbid = vdbidNil; }
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#else
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#define ReleaseVDbid( vdbid ) { MEMRelease( iresDAB, (BYTE *) vdbid ); }
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#endif
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#define DbidOfVDbid( vdbid ) ( ( (VDBID) vdbid )->dbid )
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#define GrbitOfVDbid( vdbid ) ( ( (VDBID) vdbid )->grbit )
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#define FVDbidReadOnly( vdbid ) ( ( (VDBID) vdbid )->grbit & JET_bitDbReadOnly )
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#define VDbidCheckUpdatable( vdbid ) \
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( FVDbidReadOnly( vdbid ) ? ErrERRCheck( JET_errPermissionDenied ) : JET_errSuccess )
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#else
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#define DbidOfVDbid( vdbid ) (vdbid)
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#define VdbidMEMAlloc()
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#define ReleaseVDbid( vdbid )
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#define GrbitOfVDbid( vdbid )
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#define FVDbidReadOnly( vdbid )
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#define VDbidCheckUpdatable( vdbid )
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#endif
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