Device Specific Feedback Information

The device specific feedback information in the file information data structure starts at position 367 in the INFDS, and contains input/output feedback information specific to a device.

The length of the INFDS when device specific feedback information is required, depends on two factors: the device type of the file, and on whether DISK files are keyed or not. The minimum length is 528; but some files require a longer INFDS.

More information on the contents and length of the device feedback for database file, printer files, ICF and display files can be found in the IBM® i Information Center database and file systems category.

The contents of the device specific input/output feedback area of the file are copied by RPG to the device specific feedback section of the INFDS:
Note:
  1. After each keyed input operation, only the key fields will be updated.
  2. After each non-keyed input operation, only the relative record number will be updated.

For more information see POST (Post).