Henry check out: http://gunkies.org/wiki/UNIX*_System_V_and_4.1C_BSDPage 25 describes the new BSD group and identifier scheme.
Ah, I see, thanks for the pointer:
"System V uses the old V7/32V group scheme: a user may have access to a login group (specified in /etc/passwd) and also to several other groups (as permitted by /etc/group), but may be in only one group at a time."
Looking at https://github.com/robohack/ucb-csrg-bsd/commits/master/usr.sbin/chown/chgrp.c , the commit stating "new with multiple groups" is dated March 5, 1982 which would put it around 4.1a.
-Henry
ᐧOn Mon, Nov 15, 2021 at 1:51 PM Clem Cole <clemc@ccc.com> wrote:3BSD has the V7 scheme, the new kernel code where there is a group list in the process is not introduced until later/ᐧOn Mon, Nov 15, 2021 at 1:46 PM Henry Bent <henry.r.bent@gmail.com> wrote:On Mon, 15 Nov 2021 at 13:31, Clem Cole <clemc@ccc.com> wrote:Grant,Mashey and crew basically did most of the original group work as part of PWB. If you look at the Sixth Edition sources and the PWB 1.0 stuff, that is one of the places you will find differences. With Seventh Edition (or I believe as part of the UNIX/TS work that Ken picked up), the Mashey group changes went back into the Research stream. With one of the predecessors to 4.2BSD (it may have 4.1A or 4.1B but frankly I have forgotten) Joy introduced the group scheme we all use today.Looking at the TUHS archives, unless I'm missing something, 3BSD has groups that appear to be in the modern format:% ls -l /bsd/3bsd/etc/group-r--r--r-- 1 root root 44 1980-01-02 22:08 /bsd/3bsd/etc/group% cat /bsd/3bsd/etc/groupstaff:*:10:bill,ozalp
grad:*:20:
prof:*:30:% find . -name 'chgrp*' | xargs ls -l
-r-xr-xr-x 1 root root 6960 Dec 30 1979 ./usr/bin/chgrp
-r--r--r-- 1 root root 26 Feb 12 1979 ./usr/man/man1/chgrp.1
-r--r--r-- 1 root root 754 Feb 12 1979 ./usr/src/cmd/chgrp.c-Henry