Cross Reference: /illumos-gate/usr/src/cmd/svc/milestone/net-svc

	net-svc revision 7c478bd95313f5f23a4c958a745db2134aa03244
#!/sbin/sh
#
# CDDL HEADER START
#
# The contents of this file are subject to the terms of the
# Common Development and Distribution License, Version 1.0 only
# (the "License").  You may not use this file except in compliance
# with the License.
#
# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
# or http://www.opensolaris.org/os/licensing.
# See the License for the specific language governing permissions
# and limitations under the License.
#
# When distributing Covered Code, include this CDDL HEADER in each
# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
# If applicable, add the following below this CDDL HEADER, with the
# fields enclosed by brackets "[]" replaced with your own identifying
# information: Portions Copyright [yyyy] [name of copyright owner]
#
# CDDL HEADER END
#
#
# Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
# Use is subject to license terms.
#
#ident  "%Z%%M% %I% %E% SMI"

#
# This is third phase of TCP/IP startup/configuration.  This script
# runs after the NIS/NIS+ startup script.  We run things here that may
# depend on NIS/NIS+ maps.
#

case "$1" in
'start')
    #
    # In a zone we need this service to be up, but all of the work
    # it tries to do is irrelevant (and will actually lead to the service
    # failing if we try to do it), so just bail out.
    #
    if [ `/sbin/zonename` != "global" ]; then
        exit 0
    fi
    ;; # Fall through -- rest of script is the initialization code

'stop')
    exit 0
    ;;

*)
    echo "Usage: $0 { start | stop }"
    exit 1
    ;;
esac

. /lib/svc/share/smf_include.sh

# If boot variables are not set, set variables we use
[ -z "$_INIT_UTS_NODENAME" ] && _INIT_UTS_NODENAME=`/usr/bin/uname -n`

#
# wait_nis
# Wait up to 5 seconds for ypbind to obtain a binding.
#
wait_nis ()
{
    for i in 1 2 3 4 5; do
        server=`/usr/bin/ypwhich 2>/dev/null`
        [ $? -eq 0 -a -n "$server" ] && return 0 || sleep 1
    done
    return 1
}

#
# This function takes two file names and the file mode as input. The two
# files are compared for differences (using cmp(1)) and if different, the
# second file is over written with the first. A chmod is done with the file
# mode passed in. If the files are equal, the first file passed
# in (the /tmp file) is deleted.
#
mv_file ()
{
    /usr/bin/cmp -s $1 $2
    if [ $? -eq 1 ]; then
        /usr/bin/mv $1 $2
        #
        # The umask during boot is configurable, which requires
        # explicit setting of file permission modes when we
        # create files.
        #
        /usr/bin/chmod $3 $2
    else
        /usr/bin/rm $1
    fi
}

#
# update_nss
# This routine takes as a parameter, the name of the respective policy
# to change in the nsswitch.conf (hosts or ipnodes) to update with dns.
#
update_nss ()
{
    policy=$1;
    # Add dns to the nsswitch file, if it isn't already there.
    /usr/bin/awk ' $1 ~ /^'${policy}':/ {
        n = split($0, a);
        newl = a[1];
        if ($0 !~ /dns/) {
            printf("#%s # Commented out by DHCP\n", $0);
            updated = 0;
            for (i = 2; i <= n; i++) {
                if (updated == 0 && index(a[i], "[") == 1) {
                    newl = newl" dns";
                    updated++;
                }
                newl = newl" "a[i];
            }
            if (updated == 0) {
                newl = newl" dns";
                updated++;
            }
            if (updated != 0)
                newl = newl" # Added by DHCP";
            else
                newl = $0;
            printf("%s\n", newl);
        } else
            printf("%s\n", $0);
    } $1 !~ /^'${policy}':/ { printf("%s\n", $0); }' /etc/nsswitch.conf \
        >/tmp/nsswitch.conf.$$

    mv_file /tmp/nsswitch.conf.$$ /etc/nsswitch.conf 644
}

#
# update_files
# This routine takes as a parameter, the name of the respective file
# (hosts or ipnodes) to update with the new host name and IP address.
#
update_files ()
{
    filename=$1;
    # Delete any old lines added by dhcp.
    /usr/bin/sed -e '/# Added by DHCP$/d' /etc/inet/${filename} \
        > /tmp/${filename}_clear.$$

    shift $#    # Clear $0-9 first in case grep fails
    set -- `/usr/bin/grep "^[   ]*$ipaddr[  ]" \
        /tmp/${filename}_clear.$$ 2>/dev/null`

    if [ $# -gt 0 ]; then
        #
        # IP address is already in the file. Ensure the
        # associated hostname is the same as the Hostname
        # property returned by the DHCP server.
        #
        /usr/bin/sed -e "/^[    ]*${ipaddr}[    ]/d" \
            /tmp/${filename}_clear.$$ >/tmp/${filename}.$$
        echo "${ipaddr}\t${hostname}\t# Added by DHCP" \
            >>/tmp/${filename}.$$
    else
        #
        # IP address is missing from the respective file.  Now check
        # to see if the hostname is present with a different IP.
        #
        shift $#    # Clear $0-9 in case grep fails
        set -- `/usr/bin/grep -s -v '^#' /tmp/${filename}_clear.$$ | \
            /usr/bin/egrep "[    ]${hostname}([  ]|$)"`

        if [ $# -gt 0 ]; then
            #
            # Hostname is present in the file. Rewrite this line
            # to have the new IP address and the DHCP comment.
            #
            /usr/bin/sed -e "/^[    ]*${1}[     ]/d" \
                /tmp/${filename}_clear.$$ >/tmp/${filename}.$$

            shift   # Shift off $1 (the old IP)

            echo "$ipaddr $*\c" | /usr/bin/tr ' ' '\t' \
                >>/tmp/${filename}.$$

            echo "\t# Added by DHCP" >>/tmp/${filename}.$$
        else
            #
            # Hostname is not present in the named file.
            # Add a new line for the host at the end of
            # the new respective file.
            #
            /usr/bin/mv /tmp/${filename}_clear.$$ \
                /tmp/${filename}.$$
            echo "${ipaddr}\t${hostname}\t# Added by DHCP" \
                >>/tmp/${filename}.$$
        fi
    fi

    /usr/bin/rm -f /tmp/${filename}_clear.$$
    mv_file /tmp/${filename}.$$ /etc/inet/${filename} 444
}

#
# We now need to reset the netmask and broadcast address for our network
# interfaces.  Since this may result in a name service lookup, we want to
# now wait for NIS to come up if we previously started it.
#
domain=`/usr/bin/domainname 2>/dev/null`

[ -z "$domain" ] || [ ! -d /var/yp/binding/$domain ] || wait_nis || \
    echo "WARNING: Timed out waiting for NIS to come up" >& 2

#
# Re-set the netmask and broadcast addr for all IP interfaces.  This ifconfig
# is run here, after waiting for name services, so that "netmask +" will find
# the netmask if it lives in a NIS map. The 'D' in -auD tells ifconfig NOT to
# mess with the interface if it is under DHCP control
#
/usr/sbin/ifconfig -auD4 netmask + broadcast +

# Uncomment these lines to print complete network interface configuration
# echo "network interface configuration:"
# /usr/sbin/ifconfig -a

smf_netstrategy

if [ "$_INIT_NET_STRATEGY" = "dhcp" ]; then
    dnsservers=`/sbin/dhcpinfo DNSserv`
else
    dnsservers=""
fi

if [ -n "$dnsservers" ]; then
    #
    # Go through /etc/resolv.conf and replace any existing
    # domain or nameserver entries with new ones derived
    # from DHCP.  Note that it is important to preserve
    # order of domain entries vs. search entries; the search
    # entries are reserved for administrator customization
    # and if placed after the domain entry will override it.
    # See resolv.conf(4).
    #
    if [ ! -f /etc/resolv.conf ]; then
        /usr/bin/touch /etc/resolv.conf
    fi
    dnsdomain=`/sbin/dhcpinfo DNSdmain`
    export dnsservers dnsdomain
    /usr/bin/nawk </etc/resolv.conf >/tmp/resolv.conf.$$ '
        function writedomain() {
            if (updated == 0) {
                    # Use only first domain, not a search list
                    split(ENVIRON["dnsdomain"], d)
                if(length(d[1]) != 0)
                    printf("domain %s\n", d[1])
            }
            ++updated
        }
        $1 == "domain" { writedomain(); next }
        $1 != "nameserver" { print $0 }
        END {
            writedomain()
            n = split(ENVIRON["dnsservers"], s)
            for (i = 1; i <= n; ++i)
                printf("nameserver %s\n", s[i])
        }'
    unset dnsservers dnsdomain
    mv_file /tmp/resolv.conf.$$ /etc/resolv.conf 644
    #
    # Add dns to the nsswitch file, if it isn't already there.
    #
    update_nss hosts
    update_nss ipnodes

elif /usr/bin/grep '# Added by DHCP$' /etc/nsswitch.conf >/dev/null 2>&1; then

    # If we added DNS to the hosts and ipnodes policy in the nsswitch,
    # remove it.
    /usr/bin/sed \
        -e '/# Added by DHCP$/d' \
        -e 's/^\(#hosts:\)\(.*[^#]\)\(#.*\)$/hosts: \2/' \
        -e 's/^\(#ipnodes:\)\(.*[^#]\)\(#.*\)$/ipnodes: \2/' \
        /etc/nsswitch.conf >/tmp/nsswitch.conf.$$

    mv_file /tmp/nsswitch.conf.$$ /etc/nsswitch.conf 644
fi

if [ "$_INIT_NET_STRATEGY" = "dhcp" ]; then

    hostname=`/usr/bin/uname -n`
    ipaddr=`/sbin/dhcpinfo Yiaddr`
    update_files hosts
    update_files ipnodes

else
    # We're not using a dhcp strategy, so host entries added by
    # DHCP should be removed from /etc/inet/hosts and /etc/inet/ipnodes.

    if /usr/bin/grep '# Added by DHCP$' /etc/inet/hosts >/dev/null 2>&1;
        then
        /usr/bin/sed -e '/# Added by DHCP$/d' \
            /etc/inet/hosts > /tmp/hosts.$$
        mv_file /tmp/hosts.$$ /etc/inet/hosts 444
    fi

    if /usr/bin/grep '# Added by DHCP$' /etc/inet/ipnodes >/dev/null 2>&1;
        then
        /usr/bin/sed -e '/# Added by DHCP$/d' \
            /etc/inet/ipnodes > /tmp/ipnodes.$$
        mv_file /tmp/ipnodes.$$ /etc/inet/ipnodes 444
    fi
fi

#
# Load the IPQoS configuration.
# This is backgrounded so that any remote hostname lookups it performs
# don't unduely delay startup. Any messages go via syslog.
#

if [ -f /usr/sbin/ipqosconf -a -f /etc/inet/ipqosinit.conf ]; then
    /usr/sbin/ipqosconf -s -a /etc/inet/ipqosinit.conf &
fi

#
# Add a static route for multicast packets out our default interface.
# The default interface is the interface that corresponds to the node name.
# Run in background subshell to avoid waiting for name service.
#

(
if [ "$_INIT_NET_STRATEGY" = "dhcp" ]; then
    mcastif=`/sbin/dhcpinfo Yiaddr` || mcastif=$_INIT_UTS_NODENAME
else
    mcastif=$_INIT_UTS_NODENAME
fi

echo "Setting default IPv4 interface for multicast:" \
    "add net 224.0/4: gateway $mcastif"

/usr/sbin/route -n add -interface 224.0/4 -gateway "$mcastif" >/dev/null
) &