Russell Coker (russell(a)coker.com.au) said:
Below is the relevant section of the FHS. It says that programs
which use
more than one file are encouraged to use a sub-directory (IE Sendmail).
Doing the same for programs which only have a single file is not a major
break.
It says that pid files *must* be placed in /var/run, and that
subdirectories can be used for other process data, as I'm reading
it.
Bill