linux-kernel - Re: Group limit for NFS exported file systems

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <2c0942db0608230435n1b680f11q3b19669f0bb62268@mail.gmail.com>
Date:	Wed, 23 Aug 2006 04:35:59 -0700
From:	"Ray Lee" <madrabbit@...il.com>
To:	"Robert Szentmihalyi" <robert.szentmihalyi@....de>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: Group limit for NFS exported file systems

On 8/23/06, Robert Szentmihalyi <robert.szentmihalyi@....de> wrote:
> > Is he a member of more than 16 groups?
>
> Yes. He is actually a member of 27 groups.
> Is the limit of 16 groups still current? I was under the impression that it is a limitation of 2.4 kernels....

Under 2.6 local group membership was expanded to 65536. NFS, however,
is a standard separate from Linux, and it imposes a limit of 16 groups
on the wire for the AUTH_UNIX credentials.

If all your client systems are Linux, you can use the patch at:
    http://www.frankvm.com/nfs-ngroups/
as a work around. (Only the client systems need the patch.)

I haven't used it myself, so best of luck.

Ray
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/