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To: FreeBSD-questions@FreeBSD.ORG, freebsd@cavecreek.net
From: chas <panda@peace.com.my>
Subject: Re: MAXLOGNAME and UT_NAMESIZE
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The following worked for me :

1. change settings in :
   UT_NAMESIZE=16 in /usr/src/include/utmp.h

MAXLOGNAME=18 in /usr/src/sys/sys/param.h

2. make world : there's a good article at 
   http://www.nothing-going-on.demon.co.uk/FreeBSD/make-world/make-world.html

But basically if you have a new box :
- edit /etc/make.conf (first make a
copy to /etc/make.conf.dist) … 
- Drop to single user mode with #shutdown now
- # cd /usr/obj and remove
anything there 
- # cd /usr/src 
- # make buildworld
- # make
installworld
This does not update configuration files.. only the binaries 
and programs themselves. See the webpage on making world for 
details of how to compare config files.

3. Remove utmp and wtmp.
   See 'man utmp' and 'man wtmp' for details… but basically you 
   have to remove these since the database structure might change 
   with the long usernames. I didn't have a wtmp file but did the 
   following on utmp :
   # mv /var/run/utmp /var/run/utmp.back
   # touch
/var/run/utmp"

All of this is somewhere in the archives already.
(Thanks to Studded for putting me on the right path 
when I had to do this.)

Looks like you haven't done make world.

So far, nothing's fallen apart on my machine so hope it works for you !

chas

ps. don't forget to edit adduser and other scripts.

pps. you probably don't want to be cross posting ISP and Questions

>The standard for FreeBSD 2.2.x is set to 8. I have changed UT_NAMESIZE and
>MAXLOGNAME in ALL .h files (/usr/include/sys/utmp.h etc... etc)
>and I recompiled    chown.c and getpwent.c and passwd.c
>
>but still I get :     chown: <the_login_id>: illegal user name
>
>when <the_login_id> exceeds 8 chars.
>
>Any ideas anyone ? I need a maximum of 17 chars in a login ID.
>
>Thanks
>
>Peter.
>
>
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