Debian Bug report logs - #296722
Add Unix.initgroups

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Message #5 received at submit@bugs.debian.org (full text, mbox, reply):

From: Sunny Kalsi <sunnyk@student.unsw.edu.au>

To: Debian Bug Tracking System <submit@bugs.debian.org>

Subject: mldonkey-server: cannot add groups to mldonkey user

Date: Thu, 24 Feb 2005 21:08:48 +1100

Package: mldonkey-server
Version: 2.5.28-2
Severity: normal

I've got my shares & temporary directory in a fat32 drive, umask 002 (so
that the group, "disk", gets full access, but others do not).
Unfortunately, this means that the user mldonkey cannot write to the disk. Worse, adding groups to the mldonkey user doesn't fix the problem.


-- System Information:
Debian Release: 3.1
  APT prefers testing
  APT policy: (900, 'testing'), (200, 'unstable'), (1, 'experimental')
Architecture: i386 (i686)
Kernel: Linux 2.6.10-rc2-mm3
Locale: LANG=en_AU.UTF-8, LC_CTYPE=ja_JP.UTF-8 (charmap=UTF-8)

Versions of packages mldonkey-server depends on:
ii  adduser                     3.59         Add and remove users and groups
ii  debconf [debconf-2.0]       1.4.30.11    Debian configuration management sy
ii  libc6                       2.3.2.ds1-20 GNU C Library: Shared libraries an
ii  mime-support                3.28-1       MIME files 'mime.types' & 'mailcap
ii  ucf                         1.13         Update Configuration File: preserv
ii  zlib1g                      1:1.2.2-3    compression library - runtime

-- debconf information:
* mldonkey-server/max_hard_download_rate: 24
* mldonkey-server/launch_at_startup: true
  mldonkey-server/config_exist_no_options:
* mldonkey-server/plugin: Directconnect, Overnet, Bittorent
* mldonkey-server/mldonkey_group: mldonkey
* mldonkey-server/false_password:
* mldonkey-server/max_hard_upload_rate: 4
* mldonkey-server/password: (password omitted)
* mldonkey-server/max_alive: 666
* mldonkey-server/run_as_user: mldonkey
  mldonkey-server/reown_file: false
* mldonkey-server/mldonkey_niceness: 20
* mldonkey-server/config_exist_no_dir:
* mldonkey-server/fasttrack_problem:
  mldonkey-server/shared_directories: share
* mldonkey-server/mldonkey_dir: /var/lib/mldonkey
* mldonkey-server/restart_after_upgrade: false
* mldonkey-server/client_name: foobear[ARC]
  mldonkey-server/mldonkey_move: false
* mldonkey-server/mldonkey_umask: 0022

Message #10 received at 296722@bugs.debian.org (full text, mbox, reply):

From: "Sylvain LE GALL" <sylvain.le-gall@polytechnique.org>

To: Sunny Kalsi <sunnyk@student.unsw.edu.au>, 296722@bugs.debian.org

Subject: Re: Bug#296722: mldonkey-server: cannot add groups to mldonkey user

Date: Thu, 24 Feb 2005 22:20:06 +0100

Hello,

On Thu, Feb 24, 2005 at 09:08:48PM +1100, Sunny Kalsi wrote:
> Package: mldonkey-server
> Version: 2.5.28-2
> Severity: normal
> 
> I've got my shares & temporary directory in a fat32 drive, umask 002 (so
> that the group, "disk", gets full access, but others do not).
> Unfortunately, this means that the user mldonkey cannot write to the disk. Worse, adding groups to the mldonkey user doesn't fix the problem.
> 

Yeah, this is a known problem :
- mldonkey start as root
- mldonkey daemonize
- mldonkey changes to user mldonkey:mldonkey
- here comes the problem : mldonkey cannot use all the group of mldonkey
  user, only the primary one ( ie mldonkey in standrad install )

The problem comes from ocaml. There is not binding for the function
setgroups. So i cannot set all the group of a user.

The solution :
set the primary group of mldonkey to "disk". This should help you to
circumvent the problem.

Let me know if it works.

Regard
Sylvain Le Gall

Message #25 received at 296722@bugs.debian.org (full text, mbox, reply):

From: Julien Cristau <jcristau@liafa.jussieu.fr>

To: Sylvain LE GALL <sylvain.le-gall@polytechnique.org>

Cc: 296722@bugs.debian.org

Subject: Re: Bug#296722: mldonkey-server: cannot add groups to mldonkey user

Date: Thu, 10 Nov 2005 18:57:55 +0100

On Thu, Feb 24, 2005 at 22:20:06 +0100, Sylvain LE GALL wrote:

> - mldonkey start as root
> - mldonkey daemonize
> - mldonkey changes to user mldonkey:mldonkey
> - here comes the problem : mldonkey cannot use all the group of mldonkey
>   user, only the primary one ( ie mldonkey in standrad install )
> 
> The problem comes from ocaml. There is not binding for the function
> setgroups. So i cannot set all the group of a user.
> 
Hi,

can't the necessary binding for setgroups() be added to mldonkey or some
library other than the standard Unix lib? I think this would be easy and
provide a workaround for this issue, which wouldn't need an addition to
the standard library (although I agree that setgroups() has its place in
the stdlib, since getgroups() is already there).

Cheers,
Julien Cristau

Message #30 received at 296722@bugs.debian.org (full text, mbox, reply):

From: "Sylvain Le Gall" <sylvain.le-gall@polytechnique.org>

To: Julien Cristau <jcristau@liafa.jussieu.fr>, 296722@bugs.debian.org

Subject: Re: Bug#296722: mldonkey-server: cannot add groups to mldonkey user

Date: Thu, 10 Nov 2005 21:08:40 +0100

Hello,

On Thu, Nov 10, 2005 at 06:57:55PM +0100, Julien Cristau wrote:
> On Thu, Feb 24, 2005 at 22:20:06 +0100, Sylvain LE GALL wrote:
> 
> > - mldonkey start as root
> > - mldonkey daemonize
> > - mldonkey changes to user mldonkey:mldonkey
> > - here comes the problem : mldonkey cannot use all the group of mldonkey
> >   user, only the primary one ( ie mldonkey in standrad install )
> > 
> > The problem comes from ocaml. There is not binding for the function
> > setgroups. So i cannot set all the group of a user.
> > 
> Hi,
> 
> can't the necessary binding for setgroups() be added to mldonkey or some
> library other than the standard Unix lib? I think this would be easy and
> provide a workaround for this issue, which wouldn't need an addition to
> the standard library (although I agree that setgroups() has its place in
> the stdlib, since getgroups() is already there).
> 
> Cheers,
> Julien Cristau
> 

Well, maybe. But i don't really want to hand write this part, only for
mldonkey_server. If one day, i build a daemonize library for ocaml, i
will use it for mldonkey_server... 

If you think it is a real problem, please send me a little patch. For
now, i have only submitted this bug to ocaml BTS.
(i know, i am lazy...)

Kind regard
Sylvain Le Gall

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