MRxExtendForNonCache - NtDoc
Native API online documentation, based on the System Informer
(formerly Process Hacker) phnt
headers
// mrx.h
PMRX_EXTENDFILE_CALLDOWN MRxExtendForNonCache;
ULONG MRxExtendForNonCache(
_Inout_ PRX_CONTEXT RxContext,
_Inout_ PLARGE_INTEGER pNewFileSize,
_Out_ PLARGE_INTEGER pNewAllocationSize
)
{ ... }
View the official Windows hardware development documentationNo description available.
The MRxExtendForNonCache routine is called by RDBSS to request that a network mini-redirector extend a file when the file is not being cached by the cache manager.
RxContext [in, out] A pointer to the RX_CONTEXT structure. This parameter contains the IRP that is requesting the operation.
pNewFileSize [in, out] A pointer to the LARGE_INTEGER value indicating the byte count of the new file size.
pNewAllocationSize [out] A pointer to the LARGE_INTEGER for storing the new allocation size when MRxExtendForCache returns.
MRxExtendForNonCache returns STATUS_SUCCESS on success or an error code on failure.
MRxExtendForNonCache handles network requests to extend the file for non-cached I/O.
Before calling MRxExtendForNonCache, RDBSS modifies the following members in the RX_CONTEXT structure pointed to by the RxContext parameter:
LowIoContext.Operation is set to LOWIO_OP_WRITE
LowIoContext.ParamsFor.ReadWrite.Flags has the LOWIO_READWRITEFLAG_EXTENDING_FILESIZE bit set
A network mini-redirector that caches file or directory information may need to invalidate its cache information when the file is extended.
| Target platform | Desktop |
| Header | Mrx.h (include Mrx.h) |
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