🚀 go-pugleaf

A couple of days ago I posted a request to att.3b and att.unix about a problem
I was having with vi on a 3B2: to wit, if my session died due to a phone line
problem (Illinois Bell, NOT AT&T :-) ) vi would send me mail that it had saved
a copy of my editor buffer, and the preserve file would be present in
/usr/preserve, but 'vi -r filename' would come up with an empty buffer and a
'file not found' diagnostic.

I received scads of replies, all advising me of a very simple fix.  The
problem is that the restore program, /usr/lib/exrecover, should be setgid
bin, not setuid bin as distributed.  (Also the save directory, /usr/preserve,
should have 775 permissions and be owned and have a group of bin, which already
was the case on my system the way vi was distributed.)

Therefore, I urge anyone out there who has a 3B2 with vi on it to be sure
that /usr/lib/exrecover is setgid bin (permissions of 2555, owner and group
of 'bin') and also double check that /usr/lib/expreserve is setuid bin and
owned by bin (permissions 4555, owner of 'bin') (I think setgid would also
work, but I haven't tried it--if you do, be sure to test it before trusting
it!) and that the /usr/preserve directory is present with permissions of 775
and is owned by and has a group of 'bin'.  You will be very glad you did
if you ever lose a session from a bad connection!
-- 
 -------------------------------    Disclaimer:  The views contained herein are
|       dan levy | yvel nad      |  my own and are not at all those of my em-
|         an engihacker @        |  ployer or the administrator of any computer
| at&t computer systems division |  upon which I may hack.
|        skokie, illinois        |
 --------------------------------   Path: ..!{akgua,homxb,ihnp4,ltuxa,mvuxa,
						vax135}!ttrdc!levy