[OpenAFS] Question for admins regarding pts membership output

[Jeffrey E Altman]

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The Protection Service groups fall into two categories.   Those with 
explicit membership lists and those with implicit membership lists.   
For example, the "system:anyuser" and "system:authuser" groups are 
implicit whereas "system:administrators", "system:ptsviewers", and 
"system:authuser@foreign-realm" groups are explicit.

The output of "pts membership" only includes memberships in explicit 
membership groups.   This has a negative impact inexperienced end users 
that might be unaware that they are members of the "system:anyuser" and 
"system:authuser" groups. This behavior also leads to an inconsistency 
between the behavior for foreign and local users because foreign users 
are not members of "system:authuser" and are members of 
"system:authuser@foreign" which is included in the membership list 
because that group has an explicit membership list.

The AuriStorFS  Protection service also makes a distinction between 
"user" and "machine" or "network" entities where "machine" and "network" 
entities are not members of the "system:authuser" or 
"system:authuser@foreign" groups.   This distinction is not apparent 
from the output of "pts membership" because of the exclusion of implicit 
groups.

AuriStor is considering a change to "pts membership" output to include 
implicit memberships in the output of "pts membership". With this change 
the output of these commands

   $ pts membership anonymous
   Groups anonymous (id: 32766) is a member of:

   $ pts membership testuser
   Groups anonymous (id: 112) is a member of:

   $ pts membership testuser@foreign
   Groups anonymous (id: 43282) is a member of:
     system:authuser@foreign

becomes

   $ pts membership anonymous
   Groups anonymous (id: 32766) is a member of:
     system:anyuser

   $ pts membership testuser
   Groups anonymous (id: 112) is a member of:
     system:anyuser
     system:authuser

   $ pts membership testuser@foreign
   Groups anonymous (id: 43282) is a member of:
     system:authuser@foreign
     system:anyuser

The question for cell admins is whether anyone is aware of any internal 
scripts which process the output of "pts membership" which will break as 
a result of the inclusion of the implicit groups "system:anyuser" and 
"system:authuser" in output.

Your assistance is appreciated.

Jeffrey Altman
AuriStor, Inc.


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