FsRtlGetBypassIoOpenCountPtr macro (ntifs.h)

FsRtlGetBypassIoOpenCountPtr returns a pointer to the count of how many BypassIO opens there are for a given stream.

Syntax

void FsRtlGetBypassIoOpenCountPtr(
  _fo
);

Parameters

_fo

The file object on which the query is being made.

Return value

None

Remarks

When FSRTL_ADVANCED_FCB_HEADER.Version is >= FSRTL_FCB_HEADER_V4, FsRtlGetBypassIoOpenCountPtr returns a pointer to the current value of that structure's BypassIoOpenCount field. This routine returns NULL for earlier version numbers, which do not have a BypassIoOpenCount field.

See BypassIO for filter drivers for more information.

Requirements

See also

FSCTL_MANAGE_BYPASS_IO