fiasco@infoserv.com (Rich Gircys) (11/09/90)
I have been working on setting up a bi-directional tty line (for use
as dial-in and dial-out) on a 386 running Interactive Unix, and have run
into a number of problems. The problems/resulting questions might be
Interactive specific since I'm following the same bi-dir setup I use
on a 386 machine with Esix Unix (which as an aside, if anyone wants to
know how to do this for Esix, send me mail).
Basically, here's what happens:
o dial-out works OK as long as there's no getty on the line
o however, as soon as a getty is started on that line, a dial-out attempt
(Uutry) will fail because the getty changes the /dev/tty permissions; Uutry
fails errno=13 (permissions problem)
I have tried making uucico setuid root (which usually solves all permission
problems) but the failure is the same.
What's really perplexing is that On my Esix system, getty changes /dev/tty
permissions also, but uucico works none the less.
If anyone has had the same experience with Interactive Unix and has hints/
insight into what's going on please let me know (preferably by email).
P.S. If you're thinking of Unix for 386, get Esix. Price/performance/service
wise they are the best value.
thanks, Gintaras Gircys { uunet | ...motcsd | ...apple}!infoserv!fiascotin@smsc.sony.com (Tin Le) (11/10/90)
In article <12.26746@infoserv.com> fiasco@infoserv.com (Rich Gircys) writes: > ............. >o dial-out works OK as long as there's no getty on the line > >o however, as soon as a getty is started on that line, a dial-out attempt > (Uutry) will fail because the getty changes the /dev/tty permissions; Uutry > fails errno=13 (permissions problem) You need to use /usr/lib/uucp/uugetty. That version of getty will leave the port under uucp ownership (and work better too with cu/uucico). > >I have tried making uucico setuid root (which usually solves all permission >problems) but the failure is the same. Don't do that. It'll just open up one more security hole in your system. -- Tin -- .---------------------------------------------------------------------- . Tin Le Work Internet: tin@smsc.Sony.COM . Sony Microsystems UUCP: {uunet,mips}!sonyusa!tin . Work: (408) 944-4157 Home Internet: tin@szebra.uu.net
alex@am.sublink.org (Alex Martelli) (11/13/90)
tin@smsc.sony.com (Tin Le) writes: >In article <12.26746@infoserv.com> fiasco@infoserv.com (Rich Gircys) writes: >> ............. >>o however, as soon as a getty is started on that line, a dial-out attempt >> (Uutry) will fail because the getty changes the /dev/tty permissions; Uutry >> fails errno=13 (permissions problem) > You need to use /usr/lib/uucp/uugetty. That version of getty will leave > the port under uucp ownership (and work better too with cu/uucico). Under Interactive 2.2's tty driver, there's an alternative - put a normal getty on ttyd0, and use acu0 for dial-out - the *driver* will handle the necessary handshaking. The freely available FAS driver, I believe, implements a similar philosophy on many Unices. -- Alex Martelli - (home snailmail:) v. Barontini 27, 40138 Bologna, ITALIA Email: (work:) staff@cadlab.sublink.org, (home:) alex@am.sublink.org Phone: (work:) ++39 (51) 371099, (home:) ++39 (51) 250434; Fax: ++39 (51) 366964 (work only), Fidonet: 332/401.3 (home only).