linux-decnet-user — Discussion for users of DECnet on Linux

Re: [Linux-decnet-user] Problems with building the dnprogs-2.23 series of programs

[Patrick C. <pa...@ty...>]

On Mon, Jul 21, 2003 at 04:41:45PM -0400, Gregg C Levine wrote:
> Hello from Gregg C Levine
> Okay, here goes, I am getting a series of error messages, during the
> compilation of the dnprogs-2.23 collection. Here's the bottom of the full
> script output:
> make -C netlink
> make[2]: Entering directory
> `/usr/src/linux-decnet/dnprogs-2.23/dnroute/netlink'
> cc -Iinclude   -c -o ll_map.o ll_map.c
> cc -Iinclude   -c -o libnetlink.o libnetlink.c
> ar rcs libnetlink.a ll_map.o libnetlink.o
> make[2]: Leaving directory
> `/usr/src/linux-decnet/dnprogs-2.23/dnroute/netlink'
> gcc -O2 -Wall -Wstrict-prototypes -Inetlink/include -pipe -fsigned-char -Wst
> rict-prototypes -Wall -Wno-unused -Wno-uninitialized -I../libdap -I../includ
> e -DVERSION=\"2.23\" -D_XOPEN_SOURCE -D_BSD_SOURCE -D_GNU_SOURCE -D_SVID_SOU
> RCE -DSHADOW_PWD -DDNETUSE_DEVPTS -g -o dnroute get_neigh.c send_route.c
> routing_msg.c csum.c netlink/libnetlink.a -Lnetlink -ldnet -lnetlink
> get_neigh.c: In function `main':
> get_neigh.c:259: parse error before `int'
> get_neigh.c:264: `devnull' undeclared (first use in this function)
> get_neigh.c:264: (Each undeclared identifier is reported only once
> get_neigh.c:264: for each function it appears in.)
> make[1]: *** [dnroute] Error 1
> make[1]: Leaving directory `/usr/src/linux-decnet/dnprogs-2.23/dnroute'
> make: *** [all] Error 2

It looks like 

#include <sys/types.h>

may be needed at the top of the includes list.  I suppose it must be included by
some other header file on Debian which is why I don't see the problem.

Patrick
-- 

patrick

[Linux-decnet-user] Problems with building the dnprogs-2.23 series of programs

[Gregg C L. <dr...@wo...>]

Hello from Gregg C Levine
Okay, here goes, I am getting a series of error messages, during the
compilation of the dnprogs-2.23 collection. Here's the bottom of the full
script output:
make -C netlink
make[2]: Entering directory
`/usr/src/linux-decnet/dnprogs-2.23/dnroute/netlink'
cc -Iinclude   -c -o ll_map.o ll_map.c
cc -Iinclude   -c -o libnetlink.o libnetlink.c
ar rcs libnetlink.a ll_map.o libnetlink.o
make[2]: Leaving directory
`/usr/src/linux-decnet/dnprogs-2.23/dnroute/netlink'
gcc -O2 -Wall -Wstrict-prototypes -Inetlink/include -pipe -fsigned-char -Wst
rict-prototypes -Wall -Wno-unused -Wno-uninitialized -I../libdap -I../includ
e -DVERSION=\"2.23\" -D_XOPEN_SOURCE -D_BSD_SOURCE -D_GNU_SOURCE -D_SVID_SOU
RCE -DSHADOW_PWD -DDNETUSE_DEVPTS -g -o dnroute get_neigh.c send_route.c
routing_msg.c csum.c netlink/libnetlink.a -Lnetlink -ldnet -lnetlink
get_neigh.c: In function `main':
get_neigh.c:259: parse error before `int'
get_neigh.c:264: `devnull' undeclared (first use in this function)
get_neigh.c:264: (Each undeclared identifier is reported only once
get_neigh.c:264: for each function it appears in.)
make[1]: *** [dnroute] Error 1
make[1]: Leaving directory `/usr/src/linux-decnet/dnprogs-2.23/dnroute'
make: *** [all] Error 2
-----
Basically, I have netlink created as an installable module. The problem is
still happening. I shall have the full output placed on my website, in a few
minutes. Look for a location decnet on the site. Oh, and the site is
www.gregg.levine.name
Gregg C Levine dr...@wo...
"Oh my!" The Second Doctor's nearly favorite phrase.

Re: [Linux-decnet-user] PDP-11 file transfers

[Patrick C. <pa...@ty...>]

On Sun, Jul 13, 2003 at 01:57:57AM -0000, Mal Matheson wrote:
> Greetings,
> 
> I am currently looking at using a Linux box with DECnet to act as a file server for some old PDP-11/RSX11M+ systems (using NFT commands).
> 
> After reading the FAQ and browsing this mailing list, I'm not sure what the current status is re compatibility with PDP-11 file transfers.  Apparently there were (are?) timeout issues when copying files to/from the PDP-11 systems.
> 
> Can someone please advise if the Linux-DECnet option is feasible for this purpose? I've been advised the files are fairly small, around 512K (or maybe 512 bytes, I'm not sure). An alternative someone has proposed is to use a Windows system with Pathworks32 - would this be more reliable?

In all honesty the best I can suggest is "try it and report any problems you
find"

While I've "tested" the DECnet programs against RSM11M (not plus)  and had
some success that was only against an emulated machine running the simh PDP11
simulator. Under that emulator I can get files off the PDP but not back onto it
- or was it the other way round? Anyway, I don't know how old the version of
RSX11M was that I was using and I think plus is a bit different anyway.

Maybe someone else out there has tried Linux/DECnet with a PDP can enlighten us!



patrick

[Linux-decnet-user] PDP-11 file transfers

[Mal M. <mal...@sp...>]

Greetings,

I am currently looking at using a Linux box with DECnet to act as a file =
server for some old PDP-11/RSX11M+ systems (using NFT commands).

After reading the FAQ and browsing this mailing list, I'm not sure what =
the current status is re compatibility with PDP-11 file transfers.  =
Apparently there were (are?) timeout issues when copying files to/from =
the PDP-11 systems.

Can someone please advise if the Linux-DECnet option is feasible for =
this purpose? I've been advised the files are fairly small, around 512K =
(or maybe 512 bytes, I'm not sure). An alternative someone has proposed =
is to use a Windows system with Pathworks32 - would this be more =
reliable?

Thanking you
Mal



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RE: [Linux-decnet-user] Linux DECNet & Termnal servers

[Rok V. N. L. <rok...@NU...>]

> > BTW: LAT doesn't run over DECnet - it is a protocol in its own right,
> > independant of DECnet.
>
> Fair point. In my case LAT is using DECNet.

 No, it is not! Start VMS with LAT and no DECnet: LAT will still work.
It is virtually impossible to use DECnet to transport LAT packets
because of LAT's very short timeouts.

Regards,

Rok Vidmar                       Internet:  rok...@nu...
National and University Library  Phone:     +386 1 421 5461
Turjaska 1, SI-1000 Ljubljana    Fax:       +386 1 421 5464
Slovenia

Re: [Linux-decnet-user] Linux DECNet & Termnal servers

[Patrick C. <pa...@ty...>]

On Tue, Jul 08, 2003 at 03:05:31PM +0100, Rich Buckley wrote:
> Patrick wrote:
> > If you really want to intercept packets and do nefarious things with them
> then
> > you could write a PF_PACKET program to advertise a LAT service from the
> Linux
> > box that forwards the information (after suitable NATing) to the terminal
> > server.
> 
> This is what I want to do. I would like the ability to "understand" what the
> VAX
> and VT terminal are saying to each other and periodically inject information
> into
> the data stream. The old fashioned way of doing this would be to feed the
> terminal
> connection through two serial ports and sniff. This is however not very
> scalable
> when dealing with a large number of terminals.

The PF_PACKET way is the "neatest" but probably the hardest to code because you
would need to understand quite a lot of the LAT protocol in the program.

What might be OK is for you to write a small program that simply behaves as a
LAT service on Linux and forwards the information either into llogin or a
/dev/lat port to VMS. That way you only have to deal with the raw data and not
the protocol. Plus you get a copy of the filter per user, making it easier to 
keep a track of any context you may need.

latcp -A -a myservice -C /usr/local/bin/myfilter -u someuser

is the LAT command to create custom service, all your myfilter program has
to do then is to fork llogin to the VMS box and watch the packets go to-and-fro,
changing them as necessary.

I recommend you use the -u switch for this command otherwise your filter will
run as root and that's asking for trouble :-)

patrick

RE: [Linux-decnet-user] Linux DECNet & Termnal servers

[Rich B. <ric...@ca...>]

Patrick wrote:
> If you really want to intercept packets and do nefarious things with them
then
> you could write a PF_PACKET program to advertise a LAT service from the
Linux
> box that forwards the information (after suitable NATing) to the terminal
> server.

This is what I want to do. I would like the ability to "understand" what the
VAX
and VT terminal are saying to each other and periodically inject information
into
the data stream. The old fashioned way of doing this would be to feed the
terminal
connection through two serial ports and sniff. This is however not very
scalable
when dealing with a large number of terminals.
 
> BTW: LAT doesn't run over DECnet - it is a protocol in its own right,
> independant of DECnet.

Fair point. In my case LAT is using DECNet.

Thanks,

--Rich

Re: [Linux-decnet-user] Linux DECNet & Termnal servers

[Patrick C. <pa...@ty...>]

On Tue, Jul 08, 2003 at 12:24:10PM +0100, Rich Buckley wrote:
> Hi,
> 
> Is it possible to use a DECNet enabled Linux machine to intercept, process 
> and forward messages between a OpenVMS machine and a terminal server. I
> understand these devices run LAT over DECNet. I also anticipate having to
> change some address configurations such that messages to the terminal server
> are delivered to the Linux machine before being forwarded to the real
> terminal
> server.
> 
> Any thoughts, experiences or advice would be gratefully received.

It depends what you want really want to achieve. If you want the Linux box to
act as a LAT "router" then it's probably easier to set up a LAT service on the
Linux box that automatically logs into the VMS machine.

If you really want to intercept packets and do nefarious things with them then
you could write a PF_PACKET program to advertise a LAT service from the Linux
box that forwards the information (after suitable NATing) to the terminal
server.

BTW: LAT doesn't run over DECnet - it is a protocol in its own right,
independant of DECnet.

-- 

patrick

[Linux-decnet-user] Linux DECNet & Termnal servers

[Rich B. <ric...@ca...>]

Hi,

Is it possible to use a DECNet enabled Linux machine to intercept, process 
and forward messages between a OpenVMS machine and a terminal server. I
understand these devices run LAT over DECNet. I also anticipate having to
change some address configurations such that messages to the terminal server
are delivered to the Linux machine before being forwarded to the real
terminal
server.

Any thoughts, experiences or advice would be gratefully received.

Regards,

--Rich

Re: [Linux-decnet-user] Dec server 200 and linux

[Mats M. <mat...@te...>]

On Tue, 1 Jul 2003 16:54:56 +0200
"bram kortleven" <br...@it...> wrote:

> I have an 'old' decserver 200 which I wanted to use as a
> terminal-connecting or maybe if possible dialin connection device. I
> use Linux RedHat and Mandrake all the time, so I wanted to get it
> running on these... Any idea how? or where to find necessary software
> to do so??? Thanks

You will need latd like Patrick said, and you will also need mopd and a
suitable boot image file to be able to netboot the DS200.

Hint: connect a termianl at the first port, set it to 9600/N/8/1 and
power on the DS200, then you will see the boot process (or the failure
if you don't have any mop boot source).

-- 
/Mats Magnusson, ma...@pl...

[Linux-decnet-user] Re: Your message to Linux-decnet-user awaits moderator approval

[Mats M. <mat...@te...>]

On Thu, 03 Jul 2003 12:29:13 -0700
lin...@li... wrote:

> Your mail to 'Linux-decnet-user' with the subject
> 
>     Re: [Linux-decnet-user] Dec server 200 and linux
> 
> Is being held until the list moderator can review it for approval.
> 
> The reason it is being held:
> 
>     Post by non-member to a members-only list
> 
> Either the message will get posted to the list, or you will receive
> notification of the moderator's decision.

Sorry, i posted from wrong account. I have changed my mail program
settings now so it defaults to posting from the correct account when i
reply to things on the list from now on (until the next time a harddisk
fails on me and i have no backup...)


-- 
/Mats Magnusson, ma...@pl...

Re: [Linux-decnet-user] Dec server 200 and linux

[Patrick C. <pa...@ty...>]

On Tue, Jul 01, 2003 at 04:54:56PM +0200, bram kortleven wrote:
> I have an 'old' decserver 200 which I wanted to use as a terminal-connecting
> or maybe if possible dialin connection device. I use Linux RedHat and
> Mandrake all the time, so I wanted to get it running on these... Any idea
> how? or where to find necessary software to do so???
> Thanks

LAT is the software you need:

http://sourceforge.net/project/showfiles.php?group_id=4993
http://linux-decnet.sourceforge.net/lat.html

There is an RPM in there but I'm not sure how well it runs on Mandrake, you may
be better off building from source.

By default LAT provides a login service from the terminal server which should
"just work" for your dialin (provided the DECserver is set up correctly). 

Also included in the package is a program called "moprc" which functions like
VMSs "ncp connect node" or TSM so you can manage the DECserver from the Linux
machine.

-- 

patrick

[Linux-decnet-user] Dec server 200 and linux

[bram k. <br...@it...>]

I have an 'old' decserver 200 which I wanted to use as a terminal-connecting
or maybe if possible dialin connection device. I use Linux RedHat and
Mandrake all the time, so I wanted to get it running on these... Any idea
how? or where to find necessary software to do so???
Thanks


Kortleven Bram
itos bvba
br...@it...