EOV processing

EOV (End Of Volume) processing is initiated for SAM tape files whenever a tape swap is required while reading or writing a tape file which extends over several tapes. It can be initiated explicitly for BTAM or SAM tape files by means of the FEOV macro. Just like label processing when a file is opened or closed, EOV processing depends on the OPEN mode of the file (input or output file) and on the specification in the LABEL operand of the FILE macro or the FCB, or on the specification in the LABEL-TYPE operand in the ADD-FILE-LINK command.

The structure of the routines for creating UTL, UVL and UHL labels is described in section "EXLST exits for processing labels for tape files".