bobh@txsil.UUCP (Bob Hallissy) (11/30/89)
I have SCO Unix V/386 3.2.2, but I suspect some of you Xenix folks will
be able to help me. Thanks.
I'm trying to add my own new channel to mmdf. I have successfully added
the appropriate stuff to mmdftailor and my stubbed-out channel program
actually gets run. But nowhere can I find any documentation on the calling
conventions/responsibilities for a channel program. I've sleuthed out the
following:
argv[0] is the channel name
atoi(argv[1]) is the file descriptor of a pipe that is open
for reading. I see a line such as:
msg "msg.aa03232" "mmdf@txsil.uucp"
if I read as much as I can from the pipe. The first
quoted string is the message name, the second is the
message author.
atoi(argv[2]) is also the file descriptor of a pipe, apparently
open for writing. I suspect I'm supposed to send
some result codes down it.
argv[3] holds options passed to the channel program from
deliver, such as the -w (watch) option.
Can someone enlighten me as to:
What exactly are the possible messages that get received and sent
over the pipes?
What are my channel program's responsibilities (eg., removing message
files after successful transmission)?
Thanks for any light you can shed.
--
Bob Hallissy
Summer Institute of Linguistics PHONE: 214-709-3319
7500 W. Camp Wisdom Road UUCP: ...!{texbell|convex|pollux}!txsil!bobh
Dallas, TX 75236 Internet: bobh@txsil.lonestar.org