Re: Bug in maildirquota.c

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----- Original Message -----
From: Matt Brookings <[email protected]>
Sent: Friday, January 31, 2014 11:14:37 AM GMT-06:00
Subject: Re: [vchkpw] Bug in maildirquota.c

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On 01/31/2014 05:34 AM, Simone Lazzaris wrote:
> The file descriptor number 5 of that process is pointing at the maildirsize file of the mailbox,
> and is marked as "deleted" in /proc/<procid>/fd
> 
> We store the mail in a NetApp NFS share, without locking for performance reasons, and I think
> I've found the problem: the file is deleted by someone else while vdelivermail is reading it.

You can correct this particular issue by making sure you're mounting with at least NFS v3, and that
the time on the two systems is synchronized.  NFS v4 would, of course, be better.

> 
> In maildirquota.c, function maildirsize_read, there is a while loop that reads: while (l) { 
> n=read(f, p, l); if (n < 0) {
> 
> But n is defined as a unsigned int (64 bit) , so even if "read" returns a negative value (error)
> the "if" is never trigged.

I've made note of this.
Thanks for the report!
- -- 
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    Software developer                     Systems technician
    Inter7 Internet Technologies, Inc.     (815)776-9465
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