λ [FreeBSD] Postfix + clamav-milter (rc.subr 起動)

/usr/ports/security/clamav/files/clamav-milter.in に start_postcmd を追加して、 clamav-milter起動後にソケットが出来るまで待ってからソケットのグループとパーミッションを変更するようにした。 ports から構築すると /usr/local/etc/rc.d/clamav-milter として配置される。

元々 start_precmd に clamd のソケットをチェックするスクリプトが書いてあったので簡単だった。

#!/bin/sh
#
# $FreeBSD: ports/security/clamav/files/clamav-milter.in,v 1.3 2007/04/13 17:49:09 garga Exp $
#

# PROVIDE: clamav-milter
# REQUIRE: LOGIN clamd
# BEFORE: mail
# KEYWORD: shutdown

#
# Add the following lines to /etc/rc.conf to enable clamav-milter:
#
#clamav_milter_enable="YES"
#
# See clamav-milter(1) for flags
#

. %%RC_SUBR%%

name=clamav_milter
rcvar=`set_rcvar`

command=%%PREFIX%%/sbin/clamav-milter
pidfile=%%RUNDIR%%/clamav-milter.pid
required_dirs=%%DBDIR%%
required_files=%%PREFIX%%/etc/clamd.conf

start_precmd=start_precmd

start_precmd()
{
        if [ -S "$clamav_milter_socket" ]; then
                warn "Stale socket $clamav_milter_socket removed."
                rm "$clamav_milter_socket"
        fi
        rc_flags="--pidfile ${pidfile} ${flags:-$clamav_milter_flags} local:$clamav_milter_socket"

        echo -n "Waiting for clamd socket.. "
        i=${clamav_milter_socktimeout}
        while [ $i -ne 0 ]
        do
                [ -S "$clamav_clamd_socket" ] && break
                if [ `expr $i % 10` -eq 0 ]; then
                        echo -n "${i}.. "
                fi
                sleep 1
                i=$(($i-1))
        done
        echo
        if [ $i -eq 0 ]; then
                echo "There is no clamd socket (${clamav_clamd_socket})!"
                exit 1
        fi
}

start_postcmd=start_postcmd

start_postcmd()
{
        echo -n "Waiting for clamav-milter socket.. "
        i=${clamav_milter_socktimeout}
        while [ $i -ne 0 ]
        do
                [ -S "$clamav_milter_socket" ] && break
                if [ `expr $i % 10` -eq 0 ]; then
                        echo -n "${i}.. "
                fi
                sleep 1
                i=$(($i-1))
        done

        chgrp postfix "$clamav_milter_socket"
        chmod g+rwx "$clamav_milter_socket"
}

# read settings, set default values
load_rc_config $name
: ${clamav_milter_enable="NO"}
: ${clamav_milter_socket="%%CLAMAV_MILTER_SOCKET%%"}
: ${clamav_clamd_socket="%%CLAMAV_CLAMD_SOCKET%%"}
: ${clamav_milter_flags="--postmaster-only --local --outgoing --timeout=0 --max-children=50"}
: ${clamav_milter_socktimeout="60"}

run_rc_command "$1"