Tape device files in high-level language programs

 

The tape device files used in high-level languages have different processing types.

A program-described device file can access a magnetic tape device. To use a tape device file with a program, either specify the tape file name in the program or use an Override with Tape File (OVRTAPF) command. The high-level language determines what tape parameters to use in the program.

• Open processing for tape device files
  The considerations in this topic apply to opening device files.

• Input/output processing for tape
  These considerations apply to I/O operations that are performed on data files.

• Close processing for tape
  When you close a tape device file, the system performs functions according to what you specify in the tape device file.

• User label processing
  The system uses the USRLBLPGM parameter to specify the name of a program that is used to process user header and trailer labels. This parameter is not valid for save and restore functions.

 

Parent topic:

Tape files

 

Related concepts

Override Tape File (OVRTAPF) command