ports/126237: amavisd refuses to start with "Invalid process ID"

[Guido Boehm]

>Number:         126237
>Category:       ports
>Synopsis:       amavisd refuses to start with "Invalid process ID"
>Confidential:   no
>Severity:       serious
>Priority:       low
>Responsible:    freebsd-ports-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Mon Aug 04 12:00:10 UTC 2008
>Closed-Date:
>Last-Modified:
>Originator:     Guido Boehm
>Release:        FreeBSD 7.0
>Organization:
unixuni
>Environment:
FreeBSD xxx.ctnm.de 7.0-RELEASE-p3 FreeBSD 7.0-RELEASE-p3 #1: Thu Jul 24 13:16:19 CEST 2008 root at xxx.ctnm.de:/usr/obj/usr/src/sys/GENERIC  amd64
>Description:
After a crash, amavisd-new (installed inside a jail) refused to start, this is the message i got from /var/log/jail_vscan01_console.log:

..
Starting clamav_clamd.
Starting clamav_freshclam.
Starting amavisd.
Invalid process ID in file /var/amavis/amavisd.pid: [1528] at /usr/local/sbin/amavisd line 12827.
Starting sshd.
..


Line 12827 looks like this:

$amavisd_pid =~ /^\d{1,10}\z/ && $amavisd_pid > 1 && $amavisd_pid != $$
  or die "Invalid process ID in file $pidf: [$amavisd_pid]";


I guess amavisd got exactly the same PID it had after the last boot, which isn't that uncommon after all, i'm not sure what this check is supposed to do..
>How-To-Repeat:

>Fix:
After executing

/usr/local/etc/rc.d/amavisd start

a second time from inside the jail amavisd started without errors.

>Release-Note:
>Audit-Trail:
>Unformatted: