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The MRxZeroExtend routine is called by RDBSS to request that a network mini-redirector truncate the contents of a file system object.
Syntax
PMRX_CALLDOWN MRxZeroExtend;
NTSTATUS MRxZeroExtend(
_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
MRxZeroExtend returns STATUS_SUCCESS on success or an appropriate NTSTATUS value, such as the following:
| Return code | Description |
|---|---|
| STATUS_NOT_IMPLEMENTED | This routine is not implemented. |
Remarks
MRxZeroExtend is called as part of cleanup operations if the file object was not marked for deletion and the file object is not a paging file. MRxZeroExtend is called to ensure that the portion between the valid data length and the file size is zero-extended. After calling MRxZeroExtend, RDBSS sets the Header.ValidDataLength.QuadPart member of the structure of an FCB structure equal to the Header.FileSize.QuadPart member of the FCB structure.
A call to MRxZeroExtend will be followed by a call to MRxCleanupFobx as part of the cleanup operation.
RDBSS ignores the return value from MRxZeroExtend.
Requirements
Target platform |
Desktop |
Header |
Mrx.h (include Mrx.h) |