IJAH400@INDYVAX.BITNET (03/11/88)
Oops. This was a matter of me not using my brain when I should.
Getting the JPI$_IMAGNAME using SYS$GETJPI works great, it just that
when I looked at the system service documentation, I got the silly
idea (simply because the documentation of SYS$GETJPI said so)
that the returned string could only be 39 bytes long. It can
*really* be up to the length of a full RMS filespec (255 bytes).
The documentation I have claims to be for VMS version 4.4, April
1986. I have since been finding out that I shouldn't believe any
of the VMS documentation as far as the claims for maximum string
length ($GETUAI and $SETUAI are other particularly horrible examples,
for about all the string items that are file specifications).
Hopefully the VMS 5.0 documentation will at least be caught up with
VMS 4.0. Gee. Now I remember why on TOPS-20, if we *really* wanted
to know how to use a system call, we'd look at the source code of the
monitor...
Thanks to all who helpfully pointed out my problem...
- Jim Harvey
IJAH400@INDYVAX.BITNET
Arnold's Laws of Documentation:
1.) If it should exist, it doesn't.
2.) If it does exist, it's out of date.
3.) Only documentation for useless programs transcends the
first two laws.