users-admin limitations

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users-admin limitations

Postby reson5 » Wed May 28, 2008 6:58 am

Hi all
For most of the installations of LinuxMint the users' UIDs do not present a problem when managed via users-admin tool.
The tool is sleak and well matched with the LinuxMint look-and-feel.
The problem starts when LinuxMint is to be installed in existing and more demanding environment. In such case the 16bit integer limit on UID makes that tool unusable and a command line adduser has to be used.
I am sure there are other limitations but this one makes really no sense at all, as Linux itself (and UIDs as well) are at least 32bit for a long time.
Since I am not sure who supports LinuxMint version of users-admin tool (which seems to be very well integrated), I post it here and I hope that this post will get to the developers.

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Re: users-admin limitations

Postby Husse » Thu May 29, 2008 6:00 am

This is beyond my limitations :)
I'll see if you can get an answer from someone else
Don't fix it if it ain't broken, don't break it if you can't fix it

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Re: users-admin limitations

Postby clem » Thu May 29, 2008 8:12 am


This is an upstream component packaged by Ubuntu. I would recommend to report a bug at this address: ... s/+filebug


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Re: users-admin limitations

Postby Boo » Thu May 29, 2008 10:10 am

I think the problem is an int in C is 16bits so ~65000 and no one has thought to use long (int) or 32bit.
also be careful as some GUI tools (or automatically set values) limit the range of available UIDs.
eg some config file has
(a quick check shows that /etc/adduser.conf has this)
an edit of these config files may fix them. eg last_uid=65000

why? who knows.
I have always marveled at how and why when someone creates a GUI that eventually runs cli command, why the give you less options or variable range than the command it self.

Now where was i going? Oh yes, crazy!

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