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MRxQuerySdInfo routine

TheMRxQuerySdInfo routine is called by RDBSS to request that a network mini-redirector query security descriptor information on a file system object.

Syntax


PMRX_CALLDOWN MRxQuerySdInfo;

NTSTATUS MRxQuerySdInfo(
  _Inout_  PRX_CONTEXT RxContext
)
{ ... }

Parameters

RxContext [in, out]

A pointer to the RX_CONTEXT structure. This parameter contains the IRP that is requesting the operation.

Return value

MRxQuerySdInfo returns STATUS_SUCCESS on success or an appropriate NTSTATUS value, such as one of the following:

Return codeDescription
STATUS_ACCESS_DENIED

The caller lacked the proper security for this operation.

STATUS_BUFFER_OVERFLOW

The buffer to receive the security descriptor information was too small.

This return value should be considered success and as much valid data as possible should be returned in the Info.Buffer member of the RX_CONTEXT structure pointed to by the RxContext parameter.

STATUS_BUFFER_TOO_SMALL

The buffer is too small to receive the requested data.

If this value is returned, the InformationToReturn member of the RX_CONTEXT structure pointed to by the RxContext parameter should be set to the minimum size of the expected buffer for the call to succeed.

STATUS_CONNECTION_DISCONNECTED

The connection was disconnected.

STATUS_INSUFFICIENT_RESOURCES

There were insufficient resources to complete the query.

STATUS_INVALID_PARAMETER

An invalid parameter was specified.

STATUS_NETWORK_ACCESS_DENIED

Network access was denied.

STATUS_NOT_IMPLEMENTED

A feature that is requested, such as information on a remote page file, is not implemented.

STATUS_NOT_SUPPORTED

Security descriptor information is not supported on the remote share.

STATUS_OBJECT_PATH_NOT_FOUND

The object path was not found. This error can be returned if information on an NTFS stream object was requested and the remote file system does not support streams.

STATUS_REPARSE

A reparse is required to handle a symbolic link.

 

Remarks

RDBSS issues a call to MRxQuerySdInfo in response to receiving an IRP_MJ_QUERY_SECURITY request.

Before calling MRxQuerySdInfo, RDBSS modifies the following members in the RX_CONTEXT structure pointed to by the RxContext parameter:

The QuerySecurity.SecurityInformation member is set to IrpSp->Parameters.QuerySecurity.SecurityInformation.

The Info.Buffer member is set to user buffer from I/O request packet. This buffer has already been locked by RDBSS if needed.

The Info.LengthRemaining member is set to IrpSp->Parameters.QuerySecurity.Length.

On success, the network mini-redirector should set the InformationToReturn member of the RX_CONTEXT structure to the length of the security information returned. If the call to MRxQuerySdInfo was successful, RDBSS sets the IoStatus.Information member of the IRP to the InformationToReturn member of RX_CONTEXT.

Requirements

Header

Mrx.h (include Mrx.h)

See also

MRxIsValidDirectory
MRxQueryDirectory
MRxQueryEaInfo
MRxQueryFileInfo
MRxQueryQuotaInfo
MRxQueryVolumeInfo
MRxSetEaInfo
MRxSetFileInfo
MRxSetFileInfoAtCleanup
MRxSetQuotaInfo
MRxSetSdInfo
MRxSetVolumeInfo

 

 

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