1#!/sbin/sh 2# 3# CDDL HEADER START 4# 5# The contents of this file are subject to the terms of the 6# Common Development and Distribution License (the "License"). 7# You may not use this file except in compliance with the License. 8# 9# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10# or http://www.opensolaris.org/os/licensing. 11# See the License for the specific language governing permissions 12# and limitations under the License. 13# 14# When distributing Covered Code, include this CDDL HEADER in each 15# file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16# If applicable, add the following below this CDDL HEADER, with the 17# fields enclosed by brackets "[]" replaced with your own identifying 18# information: Portions Copyright [yyyy] [name of copyright owner] 19# 20# CDDL HEADER END 21# 22# 23# Copyright 2006 Sun Microsystems, Inc. All rights reserved. 24# Use is subject to license terms. 25# 26#ident "%Z%%M% %I% %E% SMI" 27 28# 29# This is third phase of TCP/IP startup/configuration. This script 30# runs after the NIS/NIS+ startup script. We run things here that may 31# depend on NIS/NIS+ maps. 32# 33 34. /lib/svc/share/smf_include.sh 35 36case "$1" in 37'start') 38 # 39 # In a zone we need this service to be up, but all of the work 40 # it tries to do is irrelevant (and will actually lead to the service 41 # failing if we try to do it), so just bail out. 42 # 43 smf_is_globalzone || exit 0 44 ;; # Fall through -- rest of script is the initialization code 45 46'stop') 47 exit 0 48 ;; 49 50*) 51 echo "Usage: $0 { start | stop }" 52 exit 1 53 ;; 54esac 55 56 57# If boot variables are not set, set variables we use 58[ -z "$_INIT_UTS_NODENAME" ] && _INIT_UTS_NODENAME=`/usr/bin/uname -n` 59 60# 61# wait_nis 62# Wait up to 5 seconds for ypbind to obtain a binding. 63# 64wait_nis () 65{ 66 for i in 1 2 3 4 5; do 67 server=`/usr/bin/ypwhich 2>/dev/null` 68 [ $? -eq 0 -a -n "$server" ] && return 0 || sleep 1 69 done 70 return 1 71} 72 73# 74# This function takes two file names and the file mode as input. The two 75# files are compared for differences (using cmp(1)) and if different, the 76# second file is over written with the first. A chmod is done with the file 77# mode passed in. If the files are equal, the first file passed 78# in (the /tmp file) is deleted. 79# 80mv_file () 81{ 82 /usr/bin/cmp -s $1 $2 83 if [ $? -eq 1 ]; then 84 /usr/bin/mv $1 $2 85 # 86 # The umask during boot is configurable, which requires 87 # explicit setting of file permission modes when we 88 # create files. 89 # 90 /usr/bin/chmod $3 $2 91 else 92 /usr/bin/rm $1 93 fi 94} 95 96# 97# update_nss 98# This routine takes as a parameter, the name of the respective policy 99# to change in the nsswitch.conf (hosts or ipnodes) to update with dns. 100# 101update_nss () 102{ 103 policy=$1; 104 # Add dns to the nsswitch file, if it isn't already there. 105 /usr/bin/awk ' $1 ~ /^'${policy}':/ { 106 n = split($0, a); 107 newl = a[1]; 108 if ($0 !~ /dns/) { 109 printf("#%s # Commented out by DHCP\n", $0); 110 updated = 0; 111 for (i = 2; i <= n; i++) { 112 if (updated == 0 && index(a[i], "[") == 1) { 113 newl = newl" dns"; 114 updated++; 115 } 116 newl = newl" "a[i]; 117 } 118 if (updated == 0) { 119 newl = newl" dns"; 120 updated++; 121 } 122 if (updated != 0) 123 newl = newl" # Added by DHCP"; 124 else 125 newl = $0; 126 printf("%s\n", newl); 127 } else 128 printf("%s\n", $0); 129 } $1 !~ /^'${policy}':/ { printf("%s\n", $0); }' /etc/nsswitch.conf \ 130 >/tmp/nsswitch.conf.$$ 131 132 mv_file /tmp/nsswitch.conf.$$ /etc/nsswitch.conf 644 133} 134 135# 136# update_hosts_file 137# This routine updates the /etc/inet/hosts file with the hostname and IP 138# address that was obtained via DHCP. 139# 140update_hosts_file () 141{ 142 filename=hosts 143 # Delete any old lines added by dhcp. 144 /usr/bin/sed -e '/# Added by DHCP$/d' /etc/inet/${filename} \ 145 > /tmp/${filename}_clear.$$ 146 147 shift $# # Clear $0-9 first in case grep fails 148 set -- `/usr/bin/grep "^[ ]*$ipaddr[ ]" \ 149 /tmp/${filename}_clear.$$ 2>/dev/null` 150 151 if [ $# -gt 0 ]; then 152 # 153 # IP address is already in the file. Ensure the 154 # associated hostname is the same as the Hostname 155 # property returned by the DHCP server. 156 # 157 /usr/bin/sed -e "/^[ ]*${ipaddr}[ ]/d" \ 158 /tmp/${filename}_clear.$$ >/tmp/${filename}.$$ 159 echo "${ipaddr}\t${hostname}\t# Added by DHCP" \ 160 >>/tmp/${filename}.$$ 161 else 162 # 163 # IP address is missing from the respective file. Now check 164 # to see if the hostname is present with a different IP. 165 # 166 shift $# # Clear $0-9 in case grep fails 167 set -- `/usr/bin/grep -s -v '^#' /tmp/${filename}_clear.$$ | \ 168 /usr/bin/egrep "[ ]${hostname}([ ]|$)"` 169 170 if [ $# -gt 0 ]; then 171 # 172 # Hostname is present in the file. Rewrite this line 173 # to have the new IP address and the DHCP comment. 174 # 175 /usr/bin/sed -e "/^[ ]*${1}[ ]/d" \ 176 /tmp/${filename}_clear.$$ >/tmp/${filename}.$$ 177 178 shift # Shift off $1 (the old IP) 179 180 echo "$ipaddr $*\c" | /usr/bin/tr ' ' '\t' \ 181 >>/tmp/${filename}.$$ 182 183 echo "\t# Added by DHCP" >>/tmp/${filename}.$$ 184 else 185 # 186 # Hostname is not present in the named file. 187 # Add a new line for the host at the end of 188 # the new respective file. 189 # 190 /usr/bin/mv /tmp/${filename}_clear.$$ \ 191 /tmp/${filename}.$$ 192 echo "${ipaddr}\t${hostname}\t# Added by DHCP" \ 193 >>/tmp/${filename}.$$ 194 fi 195 fi 196 197 /usr/bin/rm -f /tmp/${filename}_clear.$$ 198 mv_file /tmp/${filename}.$$ /etc/inet/${filename} 444 199} 200 201# 202# We now need to reset the netmask and broadcast address for our network 203# interfaces. Since this may result in a name service lookup, we want to 204# now wait for NIS to come up if we previously started it. 205# 206domain=`/usr/bin/domainname 2>/dev/null` 207 208[ -z "$domain" ] || [ ! -d /var/yp/binding/$domain ] || wait_nis || \ 209 echo "WARNING: Timed out waiting for NIS to come up" >& 2 210 211# 212# Re-set the netmask and broadcast addr for all IP interfaces. This ifconfig 213# is run here, after waiting for name services, so that "netmask +" will find 214# the netmask if it lives in a NIS map. The 'D' in -auD tells ifconfig NOT to 215# mess with the interface if it is under DHCP control 216# 217/usr/sbin/ifconfig -auD4 netmask + broadcast + 218 219# Uncomment these lines to print complete network interface configuration 220# echo "network interface configuration:" 221# /usr/sbin/ifconfig -a 222 223smf_netstrategy 224 225if [ "$_INIT_NET_STRATEGY" = "dhcp" ]; then 226 dnsservers=`/sbin/dhcpinfo DNSserv` 227else 228 dnsservers="" 229fi 230 231if [ -n "$dnsservers" ]; then 232 # 233 # Go through /etc/resolv.conf and replace any existing 234 # domain or nameserver entries with new ones derived 235 # from DHCP. Note that it is important to preserve 236 # order of domain entries vs. search entries; the search 237 # entries are reserved for administrator customization 238 # and if placed after the domain entry will override it. 239 # See resolv.conf(4). 240 # 241 if [ ! -f /etc/resolv.conf ]; then 242 /usr/bin/touch /etc/resolv.conf 243 fi 244 dnsdomain=`/sbin/dhcpinfo DNSdmain` 245 export dnsservers dnsdomain 246 /usr/bin/nawk </etc/resolv.conf >/tmp/resolv.conf.$$ ' 247 function writedomain() { 248 if (updated == 0) { 249 # Use only first domain, not a search list 250 split(ENVIRON["dnsdomain"], d) 251 if(length(d[1]) != 0) 252 printf("domain %s\n", d[1]) 253 } 254 ++updated 255 } 256 $1 == "domain" { writedomain(); next } 257 $1 != "nameserver" { print $0 } 258 END { 259 writedomain() 260 n = split(ENVIRON["dnsservers"], s) 261 for (i = 1; i <= n; ++i) 262 printf("nameserver %s\n", s[i]) 263 }' 264 unset dnsservers dnsdomain 265 mv_file /tmp/resolv.conf.$$ /etc/resolv.conf 644 266 # 267 # Add dns to the nsswitch file, if it isn't already there. 268 # 269 update_nss hosts 270 update_nss ipnodes 271 272elif /usr/bin/grep '# Added by DHCP$' /etc/nsswitch.conf >/dev/null 2>&1; then 273 274 # If we added DNS to the hosts and ipnodes policy in the nsswitch, 275 # remove it. 276 /usr/bin/sed \ 277 -e '/# Added by DHCP$/d' \ 278 -e 's/^\(#hosts:\)\(.*[^#]\)\(#.*\)$/hosts: \2/' \ 279 -e 's/^\(#ipnodes:\)\(.*[^#]\)\(#.*\)$/ipnodes: \2/' \ 280 /etc/nsswitch.conf >/tmp/nsswitch.conf.$$ 281 282 mv_file /tmp/nsswitch.conf.$$ /etc/nsswitch.conf 644 283fi 284 285if [ "$_INIT_NET_STRATEGY" = "dhcp" ]; then 286 287 hostname=`/usr/bin/uname -n` 288 ipaddr=`/sbin/dhcpinfo Yiaddr` 289 update_hosts_file 290 291else 292 # We're not using a dhcp strategy, so host entries added by 293 # DHCP should be removed from /etc/inet/hosts. 294 295 if /usr/bin/grep '# Added by DHCP$' /etc/inet/hosts >/dev/null 2>&1; 296 then 297 /usr/bin/sed -e '/# Added by DHCP$/d' \ 298 /etc/inet/hosts > /tmp/hosts.$$ 299 mv_file /tmp/hosts.$$ /etc/inet/hosts 444 300 fi 301fi 302 303# 304# Load the IPQoS configuration. 305# This is backgrounded so that any remote hostname lookups it performs 306# don't unduely delay startup. Any messages go via syslog. 307# 308 309if [ -f /usr/sbin/ipqosconf -a -f /etc/inet/ipqosinit.conf ]; then 310 /usr/sbin/ipqosconf -s -a /etc/inet/ipqosinit.conf & 311fi 312 313# 314# Add a static route for multicast packets out our default interface. 315# The default interface is the interface that corresponds to the node name. 316# Run in background subshell to avoid waiting for name service. 317# 318 319( 320if [ "$_INIT_NET_STRATEGY" = "dhcp" ]; then 321 mcastif=`/sbin/dhcpinfo Yiaddr` || mcastif=$_INIT_UTS_NODENAME 322else 323 mcastif=$_INIT_UTS_NODENAME 324fi 325 326echo "Setting default IPv4 interface for multicast:" \ 327 "add net 224.0/4: gateway $mcastif" 328 329/usr/sbin/route -n add -interface 224.0/4 -gateway "$mcastif" >/dev/null 330) & 331