Xref: utzoo comp.protocols.nfs:1727 comp.protocols.tcp-ip.ibmpc:4797
Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sun-barr!lll-winken!ames!uhccux!munnari.oz.au!brolga!lingua.cltr.uq.OZ.AU!root
From: root@lingua.cltr.uq.OZ.AU (Hulk Hogan)
Newsgroups: comp.protocols.nfs,comp.protocols.tcp-ip.ibmpc
Subject: Wanted: newgrp(1).exe for DOS under PC-NFS.
Summary: anyone have one.
Keywords: chgrp, PC-NFS
Message-ID: <1991Feb1.011142.10895@lingua.cltr.uq.OZ.AU>
Date: 1 Feb 91 01:11:42 GMT
Distribution: comp
Organization: Centre for Language Teaching and Research, Uni of Queensland, AUSTRALIA.
Lines: 28

Hi,

Unix hosts allow user's to be members of more than one group at one time.
The "primary group" is the one in the /etc/passwd file, unless a newgrp(1)
is executed.  PC-NFS identifies a user by keeping a uid and a single gid.
What I'm after is a DOS command which would allow a PC-NFS user to change
their gid to a valid group on the NFS host.  Anyone have one?

Situation:  PC-NFS'd user accessing NFS files from a Sun host in the DOS
environment. He can't access some data from his PC because PC-NFS only keeps
his primary gid, and it one of his secondary gids which is the gid of the
data and which allows him access when he is logged on the NFS host.
Making his primary gid the same as the data is not a good solution.

Anyone have a newgrp(1) command?  The code doesn't sound so hard.
The group is in argv[1].  It does an RPC to the PCNFSD to verify that the
user is in the group, and if so, resets the gid variable to the gid.
I guess it would require some mods to rpc.pcnfsd to support a getgrnam(2)
call, and some clever way of finding where the PC-NFS stores the uid and gid.

/\ndy
-- 
Andrew M. Jones,  Systems Programmer, 	Internet: andy@lingua.cltr.uq.oz.au
Centre for Lang. Teaching & Research, 	Phone (Australia):  (07) 365 6915
University of Queensland,  St. Lucia, 	Phone (World):    +61  7 365 6915
Brisbane,  Qld. AUSTRALIA  4072 	Fax: 		  +61  7 365 7077

"No matter what hits the fan, it's never distributed evenly....."