mirror of https://github.com/tongzx/nt5src
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
97 lines
2.9 KiB
97 lines
2.9 KiB
//============== DAE: OS/2 Database Access Engine ===================
|
|
//============== dbapi.h: Database API ===================
|
|
|
|
ERR ErrDBOpenDatabase( PIB *ppib, CHAR *szDatabaseName, DBID *pdbid, ULONG grbit );
|
|
ERR ErrDBCloseDatabase( PIB *ppib, DBID dbid, ULONG grbit );
|
|
ERR ErrDBOpenDatabaseByDbid( PIB *ppib, DBID dbid );
|
|
ERR ErrDBCloseDatabaseByDbid( PIB *ppib, DBID dbid );
|
|
BOOL FDatabaseInUse( DBID dbid );
|
|
ERR ErrDBCreateDatabase( PIB *ppib, CHAR *szDatabaseName, CHAR *szConnect, DBID *pdbid, ULONG grbit );
|
|
|
|
ERR ErrDABCloseAllDBs( PIB *ppib );
|
|
|
|
#define SetOpenDatabaseFlag( ppib, dbid ) \
|
|
{ \
|
|
((ppib)->rgcdbOpen[dbid]++); \
|
|
Assert( ((ppib)->rgcdbOpen[dbid] > 0 ) ); \
|
|
}
|
|
|
|
#define ResetOpenDatabaseFlag( ppib, dbid ) \
|
|
{ \
|
|
Assert( ((ppib)->rgcdbOpen[dbid] > 0 ) ); \
|
|
((ppib)->rgcdbOpen[dbid]--); \
|
|
}
|
|
|
|
#define FUserOpenedDatabase( ppib, dbid ) \
|
|
((ppib)->rgcdbOpen[dbid] > 0)
|
|
|
|
#define FLastOpen( ppib, dbid ) \
|
|
((ppib)->rgcdbOpen[dbid] == 1)
|
|
|
|
#define FUserDbid( dbid ) \
|
|
(dbid > dbidSystemDatabase && dbid < dbidUserMax)
|
|
|
|
#define FSysTabDatabase( dbid ) \
|
|
(dbid >= dbidSystemDatabase && dbid < dbidUserMax)
|
|
|
|
#define CheckDBID( ppib, dbid ) \
|
|
Assert( FUserOpenedDatabase( ppib, dbid ) )
|
|
|
|
/* Database Attribute Block
|
|
/**/
|
|
typedef struct _dab
|
|
{
|
|
PIB *ppib; /* thread that opens this DAB */
|
|
DAB *pdabNext; /* next DAB opened by the same ppib */
|
|
JET_GRBIT grbit; /* database open mode */
|
|
DBID dbid; /* database id */
|
|
} DAB;
|
|
|
|
#pragma pack(1)
|
|
/* database root node data -- in-disk
|
|
/**/
|
|
typedef struct _dbroot
|
|
{
|
|
ULONG ulMagic;
|
|
ULONG ulVersion;
|
|
ULONG ulDBTime;
|
|
USHORT usFlags;
|
|
} DBROOT;
|
|
#pragma pack()
|
|
|
|
/* Database is loggable
|
|
/**/
|
|
#define dbrootfLoggable (1 << 0)
|
|
|
|
ERR ErrDBAccessDatabaseRoot( DBID dbid, SSIB *pssib, DBROOT **ppdbroot );
|
|
ERR ErrDBUpdateDatabaseRoot( DBID dbid);
|
|
ERR ErrDBStoreDBPath( CHAR *szDBName, CHAR **pszDBPath );
|
|
|
|
/* bogus dbid uniqifying code
|
|
/**/
|
|
#define vdbidNil NULL
|
|
typedef DAB * VDBID;
|
|
|
|
#ifdef DISPATCHING
|
|
#define VdbidMEMAlloc() (VDBID)PbMEMAlloc(iresDAB)
|
|
#ifdef DEBUG /* Debug check for illegal reuse of freed vdbid */
|
|
#define ReleaseVDbid( vdbid ) { MEMRelease( iresDAB, (BYTE *) vdbid ); vdbid = vdbidNil; }
|
|
#else
|
|
#define ReleaseVDbid( vdbid ) { MEMRelease( iresDAB, (BYTE *) vdbid ); }
|
|
#endif
|
|
#define DbidOfVDbid( vdbid ) ( ( (VDBID) vdbid )->dbid )
|
|
#define GrbitOfVDbid( vdbid ) ( ( (VDBID) vdbid )->grbit )
|
|
#define FVDbidReadOnly( vdbid ) ( ( (VDBID) vdbid )->grbit & JET_bitDbReadOnly )
|
|
#define VDbidCheckUpdatable( vdbid ) \
|
|
( FVDbidReadOnly( vdbid ) ? JET_errPermissionDenied : JET_errSuccess ) \
|
|
|
|
#else
|
|
|
|
#define DbidOfVDbid( vdbid ) (vdbid)
|
|
#define VdbidMEMAlloc()
|
|
#define ReleaseVDbid( vdbid )
|
|
#define GrbitOfVDbid( vdbid )
|
|
#define FVDbidReadOnly( vdbid )
|
|
#define VDbidCheckUpdatable( vdbid )
|
|
|
|
#endif
|