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Date:      Thu, 4 Oct 2001 13:22:45 +0300
From:      Ruslan Ermilov <ru@FreeBSD.ORG>
To:        Bill.Melvin@esc.edu
Cc:        freebsd-security@FreeBSD.ORG
Subject:   Re: odd sockstat output
Message-ID:  <20011004132245.B48758@sunbay.com>
In-Reply-To: <OF9CA51A5E.4439ABE0-ON85256ADA.007376B4@esc.edu>; from Bill.Melvin@esc.edu on Wed, Oct 03, 2001 at 05:04:40PM -0400
References:  <OF9CA51A5E.4439ABE0-ON85256ADA.007376B4@esc.edu>

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On Wed, Oct 03, 2001 at 05:04:40PM -0400, Bill.Melvin@esc.edu wrote:
> 
> Why would sockstat show me something like this:
> 
> USER     COMMAND    PID   FD PROTO  LOCAL ADDRESS         FOREIGN ADDRESS
> root     sshd      4580    5 tcp4   192.168.120.1:22      192.168.120.2:38
> root     sshd       155    4 tcp4   *:22                  *:*
> root     syslogd    129    5 udp4   *:514                 *:*
> root     syslogd    129   18 ?      ?                     ?
> 
> Line with the ?s.
> Same PID but different FD. I did another sockstat
> right away but it was gone.
> 
sockstat(1) is not atomical.  It calls netstat(1) first, then fstat(1).
Most probably, syslogd(8) closed the FD in between.


Cheers,
-- 
Ruslan Ermilov		Oracle Developer/DBA,
ru@sunbay.com		Sunbay Software AG,
ru@FreeBSD.org		FreeBSD committer,
+380.652.512.251	Simferopol, Ukraine

http://www.FreeBSD.org	The Power To Serve
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