98 lines
2.9 KiB
C
98 lines
2.9 KiB
C
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//============== DAE: OS/2 Database Access Engine ===================
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//============== dbapi.h: Database API ===================
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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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ERR ErrDBCloseDatabaseByDbid( 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, ULONG grbit );
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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 > dbidSystemDatabase && dbid < dbidUserMax)
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#define FSysTabDatabase( dbid ) \
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(dbid >= dbidSystemDatabase && dbid < dbidUserMax)
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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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#pragma pack(1)
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/* database root node data -- in-disk
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/**/
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typedef struct _dbroot
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{
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ULONG ulMagic;
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ULONG ulVersion;
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ULONG ulDBTime;
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USHORT usFlags;
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} DBROOT;
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#pragma pack()
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/* Database is loggable
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/**/
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#define dbrootfLoggable (1 << 0)
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ERR ErrDBAccessDatabaseRoot( DBID dbid, SSIB *pssib, DBROOT **ppdbroot );
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ERR ErrDBUpdateDatabaseRoot( DBID dbid);
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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 ) ? 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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