[HECnet] Links across volumes? (FILE/ENTER won't work)

[Brian Schenkenberger, VAXman-]

Sampsa Laine <sampsa at mac.com> writes:

I just added a disk to solar, DKA100: and have created a directory =
called DKA100:[DECUSLIB] on it.

I want to link it into DKA0:[SYS0.DECNET] as =
DKA0:[SYS0.DECNET.DECUSLIB].

However:

$ SET FILE/ENTER=3DDKA0:[SYS0.DECNET]DECUSLIB.DIR;1 =
DKA100:[000000]DECUSLIB.DIR;1
%SET-E-ENTERR, error entering DKA100:[000000]DECUSLIB.DIR;1 as =
DKA0:[SYS0.DECNET]DECUSLIB.DIR;1
-RMS-F-DEV, error in device name or inappropriate device type for =
operation

Here's what's in DKA100:

$ dir dka100:[000000]

Directory DKA100:[000000]

000000.DIR;1                   0.50KB     7-FEB-2015 00:26:49.44
BACKUP.SYS;1                         0KB     7-FEB-2015 00:26:49.44
BADBLK.SYS;1                         0KB     7-FEB-2015 00:26:49.44
BADLOG.SYS;1                         0KB     7-FEB-2015 00:26:49.44
BITMAP.SYS;1                         5MB     7-FEB-2015 00:26:49.44
CONTIN.SYS;1                         0KB     7-FEB-2015 00:26:49.44
CORIMG.SYS;1                         0KB     7-FEB-2015 00:26:49.44
DECUSLIB.DIR;1               0.50KB     7-FEB-2015 00:27:23.74
INDEXF.SYS;1                   2.03MB     7-FEB-2015 00:26:49.44
SECURITY.SYS;1               0.50KB     7-FEB-2015 00:26:49.44
VOLSET.SYS;1                         0KB     7-FEB-2015 00:26:49.44

Total of 11 files, 7.03MB

This is explained in the OpenVMS File System Internal book.   The files MUST
be on the same volume for the /ENTER to work.   The actual file has a header
which resides in INDEXF.SYS in the MFD of that volume.   A header is located
using the file ID.   The file ID is stored in the <direcotry].DIR.   When you
issue /ENTER, an entry, using the name you've specified, is place into the
directory specified; however, its file ID is set to the file you wish to be
linked with.   This is why it cannot span volumes.



On *NIX I'd use a symbolic link - what's the VMS solution?

You need to look into SET FILE/SYMLINK.   I have to run out now.   Later, if
nothing comes up, I'll put an example together for you.

-- 
VAXman- A Bored Certified VMS Kernel Mode Hacker       VAXman(at)TMESIS(dot)ORG

I speak to machines with the voice of humanity.