Chris Gerhard wrote:
SYSTEM (aka "Local System", S-1-5-18) is hardwired to 2147483648.
It's not exactly an ephemeral ID; it's more of a reserved ID. I think
this is so that something in the CIFS server can automatically add it
to an ACL in some cases, but I don't know the details.
So can you map this ID ? If so how?
No. Hardwired mappings win over everything else.
[ NFS failure retrieving ACL on files with SYSTEM in the ACL ]
This appears to be a bug. ls gets an error from the call to get the ACL
and then misbehaves:
http://bugs.opensolaris.org/bugdatabase/view_bug.do?bug_id=6844328
Hmm. I'm not an expert on NFS and wouldn't immediately know where to look
in the code to check, but my tentative bet is that NFS thinks the hardwired
ID 2147483648 is an ephemeral ID (because it's in the ephemeral range) and
is upset about the idea of passing an ephemeral ID across the wire.
so having this default SYSTEM group which is unmapped is preventing NFS
access working.
It isn't exactly unmapped. It's unconditionally mapped to 2147483648.
I'll need to talk to the CIFS experts about this.
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