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	Sun, 9 Nov 1997 13:23:37 -0600 (CST)
From: Kevin Day <toasty@home.dragondata.com>
Message-Id: <199711091923.NAA00752@home.dragondata.com>
Subject: Re: bin/4925: sendmail ignores user quotas
In-Reply-To: <Pine.BSF.3.96.971103133936.3406A-100000@uddias.diaspro.com> from Vasim Valejev at "Nov 3, 97 01:53:28 pm"
To: vasim@diaspro.com (Vasim Valejev)
Date: Sun, 9 Nov 1997 13:23:37 -0600 (CST)
Cc: toasty@dragondata.com, freebsd-gnats-submit@FreeBSD.ORG, gnats@FreeBSD.ORG,
        freebsd-bugs@hub.freebsd.org
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> Hi !
> 
> On Sun, 2 Nov 1997 toasty@dragondata.com wrote:
> > >Description:
> > Users can receive mail well over their hard space limit. I'd like to be able to stop this from happening. /var/spool/mail is on it's own partition, so I thought I could apply a quota to prevent users from getting mailbombed, and also from just saving too much mail on the server.
> > 
> > repquota shows the correct amount used, and will even show them going over the hard limit, but sendmail still dumps more data in their mail file.
> > 
> > Is this a bug? Probably not, but it's not really consistant behavior, as nearly every other service will stop when their limit is reached.
> > 
> 
> It's problem in /usr/libexec/mail.local . This program open and write in
>  user's mailboxes under root .
> 
> > >How-To-Repeat:
> > Enable quotas, and send a ton of mail to a user with very little space left.
> > >Fix:
> 
> Possible fix (not tested) for /usr/src/libexec/mail.local/mail.local.c :
> 
> *** mail.local.c.orig	Sat Oct 25 14:09:39 1997
> --- mail.local.c	Mon Nov  3 13:24:53 1997
> ***************
> *** 266,271 ****
> --- 266,287 ----
>   		}
>   	}
>   
> + 	if (mbfd == -1) {
> + 		e_to_sys(errno);
> + 		warn("%s: %s", path, strerror(errno));
> + 		return;
> + 	}
> + 
> + 	close(mbfd);
> + 
> + 	if (setuid(pw->pw_uid) < 0)
> + 	{
> + 		e_to_sys(errno);
> + 		warn("%d: %s", pw->pw_uid, strerror(errno));
> + 		return;
> + 	}
> + 	
> + 	mbfd = open(path, O_APPEND|O_WRONLY, 0);
>   	if (mbfd == -1) {
>   		e_to_sys(errno);
>   		warn("%s: %s", path, strerror(errno));
> 

I'm not sure if this is related or not, but when a user over their quota got
another message, there suddenly were thousands of 'mail.local' processes
running, all trying to send mail to that user...

It had otherwise worked perfectly before.


Kevin