Sophie: howto-html-en-20080722-2mdv2010.1 noarch

howto-html-en-20080722-2mdv2010.1.noarch.rpm

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NAME="AEN249">6.12. pack_id</H1
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>    This value is not normally acted upon by the sg driver. It is provided
    so the user can identify the request. This is useful when command queuing
    is being used.
    The "abnormal" case is when SG_SET_FORCE_PACK_ID is set and a 'pack_id'
    other than -1 is given to read(). In this case the read() will wait
    to fetch a request that matches this 'pack_id'. If this mode is used
    be careful to set 'dxfer_direction' to a valid value (actually any of
    the SG_DXFER_* values will do) on input to the read(), together with
    the wanted pack_id.
The type of pack_id is int.</P
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