checks

Tool tools/disc/checks.py (library, Discs and disk images). Checks of a CD's file systems, for discinfo.py: sectors that hold data no file system names, the system area, files that only one directory tree lists, and file dates later than the volume's own date.

A library: other tools and your own scripts import it. Source on GitHub.

Its own help

This is the help text in the tool itself, as ./gameframe tool checks prints it.

Checks of a CD's file systems, for discinfo.py: sectors that hold data no file system names,
the system area, files that only one directory tree lists, and file dates later than the
volume's own date.

    from checks import unused_data, system_area, tree_differences, late_dates

A mastered disc normally accounts for every sector: the system area (sectors 0 to 15), the
volume descriptors, the path tables, the directories and the files. Data outside all of them
can be a file left over from development, a second copy, padding written by the mastering
tool, or data a protection or the game reads by sector number. The system area is empty on a
PC disc, and holds the console's licence and boot data on PlayStation, Saturn and Mega-CD
discs. A file listed in the ISO 9660 tree but missing from the Joliet tree is hidden from
Windows. Standard library only.