
CON5 is derived from CON3, which was written by Mark Logan at SunSoft.
The basic unit of work that CON5 does is the same as it is in CON3.

CON5 was written in C by Guy Shaw at SunSoft.

Chris Johnson added the following:
  o Support for metadisks in the function that translates a path
    to a filesystem block device to its corresponding raw device

  o support for large files in calculating available disk space

