Synthetic "immediate" read completion

[jxy-s]

During async I/O completion synthetically try to wait for the event to complete inside of the verifier hooks in the immediate context. When successful, return to the caller that the async I/O completed "immediately". It is common programming error to not handle async I/O correctly. Attempting to handle async I/O in an "immediate" context instead in the thread or processing logic that is intended to handle the completion of the I/O is generally errant. This approach attempts to trick the logic into an potentially dangerous programming pattern.

    res = Orig_ReadFile(...);

    if (!res && /* has event to wait on */ && (NtCurrentTeb()->LastErrorValue == ERROR_IO_PENDING))
    {
         NtWaitForSingleObject(...);
         // convert to "immediate" (NtCurrentTeb()->LastErrorValue = ERROR_SUCCESS, return TRUE)
    }