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IoUpdateLinkShareAccessEx function (wdm.h)

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The IoUpdateLinkShareAccessEx routine updates the access and share access for the given file object.

Syntax

void IoUpdateLinkShareAccessEx(
  PFILE_OBJECT       FileObject,
  PSHARE_ACCESS      ShareAccess,
  PLINK_SHARE_ACCESS LinkShareAccess,
  ULONG              IoShareAccessFlags
);

Parameters

FileObject

Pointer to the file object, which usually is being closed by the current thread.

ShareAccess

A pointer to the common share-access data structure that is associated with FileObject. Drivers should treat this structure as opaque.

LinkShareAccess

A pointer to the common link share-access data structure (LINK_SHARE_ACCESS) that is associated with FileObject. Drivers should treat this structure as opaque.

IoShareAccessFlags

A bitmask of these flags:

IO_SHARE_ACCESS_NON_PRIMARY_STREAM (0x00000080) specifies that the stream is neither the primary data stream nor a directory stream.

Return value

None

Remarks

Before calling IoUpdateLinkShareAccessEx, the driver must successfully call IoCheckLinkShareAccess with the Update parameter set to FALSE.

Requirements

Requirement Value
Minimum supported client Windows 10, version 1903
Target Platform Universal
Header wdm.h
Library NtosKrnl.lib
DLL NtosKrnl.exe
IRQL PASSIVE_LEVEL