## Physical Device Driver Reference

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### RMAdjToHandleList Parameter - AdjunctData

AdjunctData (PADJUNCT) - output Pointer to an adjunct structure to search for.

The ADJUNCT type contains a union of data structures of varying lengths. When searching for a particular adjunct, set the length field of the AdjunctData structure that was passed, to the exact length of the adjunct structure being located. For example:

                      /* Correct */

                       AdjData.AdjLength = ADJ_HEADER_SIZE + sizeof(ADD_UNIT);

                      /* Incorrect */

                       AdjData.AdjLength = sizeof(ADJUNCT);