4GB limit and possible integer overflow on quotas in v2.2.4

[Gavin McCullagh]

Hi,

I have two problems with the cyrus quotas in kolab v2.2.4.

== Quota Limit ==

If I modify a user's quota in the web admin interface, the admin interface
refuses to set a quota higher than 4GB.  I get the error:

	Quota must be smaller than 4096

== Possible Integer Overflow?? ==

If I try to set the quota in cyradm, it accepts the higher quota limit, but
there seems to be something wrong with how cyradm actually reports the
quota usage.

localhost> lq user/yyyyyyyyyy at xxxxx.xxxx
 STORAGE 860853/10000000 (8.60853%)

and similarly, the quota file has:

gavinmc at xxxxx:~$ sudo cat /kolab/var/imapd/domain/x/xxxx.xxx/quota/y/user.yyyyyyyyyyy
881516990
10000000

Also, Horde reports a similar usage.

However, when I look at the disk usage in that directory on the filesystem
I see:

gavinmc at xxxxx:~$ sudo du -hs /kolab/var/imapd/spool/domain/x/xxxx.xxx/y/user/yyyyyyyyy
7.9G    /kolab/var/imapd/spool/domain/x/xxx.xx/y/user/yyyyyyyyy

I can see a somewhat similar bug report is resolved here, but there seems
to still be a problem here.  Is this an perhaps an integer overflow bug in
the code that measures the quota usage?

	https://issues.kolab.org/issue1262

Gavin