[Pkg-shadow-devel] Bug#325436: marked as done (Please allow more
than 32 groups per user)
Debian Bug Tracking System
owner at bugs.debian.org
Mon Aug 29 18:33:17 UTC 2005
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and subject line Bug#325436: [Pkg-shadow-devel] Bug#325436: Limit of 32 groups per users
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Date: Sun, 28 Aug 2005 19:08:20 +0200
From: Sylvain Beucler <beuc at gnu.org>
To: submit at bugs.debian.org
Cc: savannah-hackers-public at gnu.org
Subject: Limit of 32 groups per users
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Package: passwd
Version: 1:4.0.3-31sarge5
Severity: important
We would really need to get more groups per users in our stable
installation.
The stable kernel has a limit of 65536 groups per users:
$ cat /proc/sys/kernel/ngroups_max
65536
However usermod is still limited to 32 users:
$ usermod -G testgroup1,testgroup2,testgroup3,testgroup4,testgroup5,testgro=
up6,testgroup7,testgroup8,testgroup9,testgroup10,testgroup11,testgroup12,te=
stgroup13,testgroup14,testgroup15,testgroup16,testgroup17,testgroup18,testg=
roup19,testgroup20,testgroup21,testgroup22,testgroup23,testgroup24,testgrou=
p25,testgroup26,testgroup27,testgroup28,testgroup29,testgroup30,testgroup31=
,testgroup32,testgroup33,testgroup34,testgroup35,testgroup36,testgroup37,te=
stgroup38,testgroup39,testgroup40,testgroup41,testgroup42,testgroup43,testg=
roup44,testgroup45,testgroup46,testgroup47,testgroup48,testgroup49,testgrou=
p50,testgroup51,testgroup52,testgroup53,testgroup54,testgroup55,testgroup56=
,testgroup57,testgroup58,testgroup59,testgroup60,testgroup61,testgroup62,te=
stgroup63,testgroup64,testgroup65,testgroup66,testgroup67,testgroup68,testg=
roup69,testgroup70,testgroup71,testgroup72,testgroup73,testgroup74,testgrou=
p75,testgroup76,testgroup77,testgroup78,testgroup79,testgroup80,testgroup81=
,testgroup82,testgroup83,testgroup84,testgroup85,testgroup86,testgroup87,te=
stgroup88,testgroup89,testgroup90,testgroup91,testgroup92,testgroup93,testg=
roup94,testgroup95,testgroup96,testgroup97,testgroup98,testgroup99,testgrou=
p100 test
usermod: too many groups specified (max 32).
Incidentally 'id' is also limited to 32
users. sysconf(_SC_NGROUPS_MAX) also returns 32.
stable's /usr/include/linux/limits.h has NGROUPS_MAX set to 32. In
testing and unstable it is set to 65536.
The usermod limitation happens in stable and testing (tested with
their respective default kernel), but not in unstable (tested with the
testing kernel - all tested kernels having ngroups_max=3D65536).
Basically we have a kernel without the limitation, but the executables
have the limitation, which was probably set at compile time.
Do you know what's the origin of the limitation, and how it could be
fixed to match the default kernel's?
--=20
Sylvain
GNU Savannah: http://savannah.gnu.org
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>From bubulle at kheops.frmug.org Mon Aug 29 11:21:10 2005
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Date: Mon, 29 Aug 2005 20:20:28 +0200
From: Christian Perrier <bubulle at debian.org>
To: Sylvain Beucler <beuc at gnu.org>
Cc: 325436-done at bugs.debian.org
Subject: Re: Bug#325436: [Pkg-shadow-devel] Bug#325436: Limit of 32 groups per users
Message-ID: <20050829182028.GL1350 at mykerinos.kheops.frmug.org>
References: <20050828170820.GA9085 at localhost.localdomain> <Pine.LNX.4.61L.0508281942080.4242 at boss.zie.pg.gda.pl> <20050828203757.GA4920 at localhost.localdomain> <20050829050414.GH26066 at mykerinos.kheops.frmug.org> <20050829181603.GB6071 at localhost.localdomain>
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Quoting Sylvain Beucler (beuc at gnu.org):
> On Mon, Aug 29, 2005 at 07:04:14AM +0200, Christian Perrier wrote:
> >
> > > Thanks a lot. I'll contact the glic people :)
> >
> >
> > Which also means that this bug report is to be reassign to glibc, I
> > suppose.
>
> That would make it a duplicate; I send a new bug report to glibc that
> includes a copy of the current report (Bug#325465:).
Well, then I think we should close that one for shadow.
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