windows-server-2003/base/fs/rdr2/inc/rdbss.h

/*++

Copyright (c) 1994  Microsoft Corporation

Module Name:

    rdbss.h

Abstract:

    This module defines the RDBSS specific data structures

Author:

    Balan Sethu Raman [SethuR]  16-July-95 -- Created

Revision History:

Notes:

    All the data structures that are exposed to the mini redirector writers need to be
    consolidated in this module.

--*/

#ifndef _RDBSS_H_
#define _RDBSS_H_

//
//  In the previous redirector implementation the file system statistics and the network
//  protocol statistics were combined into one data structure ( and correctly so ) since
//  the old redirector supported only one protocol. However this does not apply to the
//  new redirector (RDR2) since there are more than one mini redirectors and the two
//  need to be distingushed. The RDBSS_STATISTICS structure provides the file system
//  level statistics while the protocol level statistics definition is under the control of
//  the mini redirector implementers.
//
//  The staistics can be obtained by issuing the FSCTL_RDBSS_GET_STATISTICS. If no mini
//  redirector name is provided the RDBSS_STATISTICS are returned and if a mini
//  redirctor name is provided the statistics of the appropriate mini redirector are
//  returned ( the call is passed through to the appropriate mini redirector ).
//

typedef struct _RDBSS_STATISTICS {
   
    LARGE_INTEGER StatisticsStartTime;

    LARGE_INTEGER PagingReadBytesRequested;
    LARGE_INTEGER NonPagingReadBytesRequested;
    LARGE_INTEGER CacheReadBytesRequested;
    LARGE_INTEGER NetworkReadBytesRequested;
    
    LARGE_INTEGER PagingWriteBytesRequested;
    LARGE_INTEGER NonPagingWriteBytesRequested;
    LARGE_INTEGER CacheWriteBytesRequested;
    LARGE_INTEGER NetworkWriteBytesRequested;
    
    ULONG InitiallyFailedOperations;
    ULONG FailedCompletionOperations;
    
    ULONG ReadOperations;
    ULONG RandomReadOperations;
    ULONG WriteOperations;
    ULONG RandomWriteOperations;
    
    ULONG NumberOfSrvCalls;
    ULONG NumberOfSrvOpens;
    ULONG NumberOfNetRoots;
    ULONG NumberOfVirtualNetRoots;
} RDBSS_STATISTICS, *PRDBSS_STATISTICS;

//
//  This call is provided for the benefit of mini redirector implementers. Each mini
//  redirector writer is free to choose the appropriate division of labour between
//  the RDBSS and the corresponding mini redirector in maintaining the statistics.
//

NTSTATUS
RdbssGetStatistics (
    PRDBSS_STATISTICS RdbssStatistics
    );

#endif // _RDBSS_H_