MAXLOGNAME + /etc/group + chkgrp invalid character @

Dan The Man dan at
Tue Nov 8 23:47:28 UTC 2011

With libnss-mysql we are able to login using email addresses etc.

In the daily cron "Daily run output" email always get the following:

Verifying group file syntax:
chkgrp: /etc/group: line 3: '@' invalid character

Could we modify system to support email addresses as usernames. From my 
testing it works fine, even with "Daily run output" complaining I can 
still su to user i added in wheel group.
We'd need to fix ckkgrp source,
adduser source, and making move to:
#define MAXLOGNAME 256   in /usr/src/sys/sys/param.h

I beleive OS's like macOSX etc when I read over their source is already 
setting this to 256.

I beleive param.h is only place need to define this, in 8.2 and previous
UT_NAMESIZE needed to be set in /usr/src/include/utmp.h as 255 and
/usr/src/sys/sys/param.h needed MAXLOGNAME set to UT_NAMESIZE+1, but seems 
we did away with utmp.h in freebsd 9.0 only needing to set param.h now.


Dan The Man
CTO/ Senior System Administrator
Websites, Domains and Everything else
Email: Dan at

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