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 2007 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 shared-IP zone we need this service to be up, but all of the 40 # work it tries to do is irrelevant (and will actually lead to the 41 # service failing if we try to do it), so just bail out. 42 # In the global zone and exclusive-IP zones we proceed. 43 # 44 smf_configure_ip || exit 0 45 ;; # Fall through -- rest of script is the initialization code 46 47'stop') 48 exit 0 49 ;; 50 51*) 52 echo "Usage: $0 { start | stop }" 53 exit 1 54 ;; 55esac 56 57 58# If boot variables are not set, set variables we use 59[ -z "$_INIT_UTS_NODENAME" ] && _INIT_UTS_NODENAME=`/usr/bin/uname -n` 60 61# 62# wait_nis 63# Wait up to 5 seconds for ypbind to obtain a binding. 64# 65wait_nis () 66{ 67 for i in 1 2 3 4 5; do 68 server=`/usr/bin/ypwhich 2>/dev/null` 69 [ $? -eq 0 -a -n "$server" ] && return 0 || sleep 1 70 done 71 return 1 72} 73 74# 75# This function takes two file names and the file mode as input. The two 76# files are compared for differences (using cmp(1)) and if different, the 77# second file is over written with the first. A chmod is done with the file 78# mode passed in. If the files are equal, the first file passed 79# in (the /tmp file) is deleted. 80# 81mv_file () 82{ 83 /usr/bin/cmp -s $1 $2 84 if [ $? -eq 1 ]; then 85 /usr/bin/mv $1 $2 86 # 87 # The umask during boot is configurable, which requires 88 # explicit setting of file permission modes when we 89 # create files. 90 # 91 /usr/bin/chmod $3 $2 92 else 93 /usr/bin/rm $1 94 fi 95} 96 97# 98# update_nss 99# This routine takes as a parameter, the name of the respective policy 100# to change in the nsswitch.conf (hosts or ipnodes) to update with dns. 101# 102update_nss () 103{ 104 policy=$1; 105 # Add dns to the nsswitch file, if it isn't already there. 106 /usr/bin/awk ' $1 ~ /^'${policy}':/ { 107 n = split($0, a); 108 newl = a[1]; 109 if ($0 !~ /dns/) { 110 printf("#%s # Commented out by DHCP\n", $0); 111 updated = 0; 112 for (i = 2; i <= n; i++) { 113 if (updated == 0 && index(a[i], "[") == 1) { 114 newl = newl" dns"; 115 updated++; 116 } 117 newl = newl" "a[i]; 118 } 119 if (updated == 0) { 120 newl = newl" dns"; 121 updated++; 122 } 123 if (updated != 0) 124 newl = newl" # Added by DHCP"; 125 else 126 newl = $0; 127 printf("%s\n", newl); 128 } else 129 printf("%s\n", $0); 130 } $1 !~ /^'${policy}':/ { printf("%s\n", $0); }' /etc/nsswitch.conf \ 131 >/tmp/nsswitch.conf.$$ 132 133 mv_file /tmp/nsswitch.conf.$$ /etc/nsswitch.conf 644 134} 135 136# 137# update_hosts_file 138# This routine updates the /etc/inet/hosts file with the hostname and IP 139# address that was obtained via DHCP. 140# 141update_hosts_file () 142{ 143 filename=hosts 144 # Delete any old lines added by dhcp. 145 /usr/bin/sed -e '/# Added by DHCP$/d' /etc/inet/${filename} \ 146 > /tmp/${filename}_clear.$$ 147 148 shift $# # Clear $0-9 first in case grep fails 149 set -- `/usr/bin/grep "^[ ]*$ipaddr[ ]" \ 150 /tmp/${filename}_clear.$$ 2>/dev/null` 151 152 if [ $# -gt 0 ]; then 153 # 154 # IP address is already in the file. Ensure the 155 # associated hostname is the same as the Hostname 156 # property returned by the DHCP server. 157 # 158 /usr/bin/sed -e "/^[ ]*${ipaddr}[ ]/d" \ 159 /tmp/${filename}_clear.$$ >/tmp/${filename}.$$ 160 echo "${ipaddr}\t${hostname}\t# Added by DHCP" \ 161 >>/tmp/${filename}.$$ 162 else 163 # 164 # IP address is missing from the respective file. Now check 165 # to see if the hostname is present with a different IP. 166 # 167 shift $# # Clear $0-9 in case grep fails 168 set -- `/usr/bin/grep -s -v '^#' /tmp/${filename}_clear.$$ | \ 169 /usr/bin/egrep "[ ]${hostname}([ ]|$)"` 170 171 if [ $# -gt 0 ]; then 172 # 173 # Hostname is present in the file. Rewrite this line 174 # to have the new IP address and the DHCP comment. 175 # 176 /usr/bin/sed -e "/^[ ]*${1}[ ]/d" \ 177 /tmp/${filename}_clear.$$ >/tmp/${filename}.$$ 178 179 shift # Shift off $1 (the old IP) 180 181 echo "$ipaddr $*\c" | /usr/bin/tr ' ' '\t' \ 182 >>/tmp/${filename}.$$ 183 184 echo "\t# Added by DHCP" >>/tmp/${filename}.$$ 185 else 186 # 187 # Hostname is not present in the named file. 188 # Add a new line for the host at the end of 189 # the new respective file. 190 # 191 /usr/bin/mv /tmp/${filename}_clear.$$ \ 192 /tmp/${filename}.$$ 193 echo "${ipaddr}\t${hostname}\t# Added by DHCP" \ 194 >>/tmp/${filename}.$$ 195 fi 196 fi 197 198 /usr/bin/rm -f /tmp/${filename}_clear.$$ 199 mv_file /tmp/${filename}.$$ /etc/inet/${filename} 444 200} 201 202# 203# We now need to reset the netmask and broadcast address for our network 204# interfaces. Since this may result in a name service lookup, we want to 205# now wait for NIS to come up if we previously started it. 206# 207domain=`/usr/bin/domainname 2>/dev/null` 208 209[ -z "$domain" ] || [ ! -d /var/yp/binding/$domain ] || wait_nis || \ 210 echo "WARNING: Timed out waiting for NIS to come up" >& 2 211 212# 213# Re-set the netmask and broadcast addr for all IP interfaces. This ifconfig 214# is run here, after waiting for name services, so that "netmask +" will find 215# the netmask if it lives in a NIS map. The 'D' in -auD tells ifconfig NOT to 216# mess with the interface if it is under DHCP control 217# 218/usr/sbin/ifconfig -auD4 netmask + broadcast + 219 220# Uncomment these lines to print complete network interface configuration 221# echo "network interface configuration:" 222# /usr/sbin/ifconfig -a 223 224smf_netstrategy 225 226if [ "$_INIT_NET_STRATEGY" = "dhcp" ]; then 227 dnsservers=`/sbin/dhcpinfo DNSserv` 228else 229 dnsservers="" 230fi 231 232if [ -n "$dnsservers" ]; then 233 # 234 # Go through /etc/resolv.conf and replace any existing 235 # domain or nameserver entries with new ones derived 236 # from DHCP. Note that it is important to preserve 237 # order of domain entries vs. search entries; the search 238 # entries are reserved for administrator customization 239 # and if placed after the domain entry will override it. 240 # See resolv.conf(4). 241 # 242 if [ ! -f /etc/resolv.conf ]; then 243 /usr/bin/touch /etc/resolv.conf 244 fi 245 dnsdomain=`/sbin/dhcpinfo DNSdmain` 246 export dnsservers dnsdomain 247 /usr/bin/nawk </etc/resolv.conf >/tmp/resolv.conf.$$ ' 248 function writedomain() { 249 if (updated == 0) { 250 # Use only first domain, not a search list 251 split(ENVIRON["dnsdomain"], d) 252 if(length(d[1]) != 0) 253 printf("domain %s\n", d[1]) 254 } 255 ++updated 256 } 257 $1 == "domain" { writedomain(); next } 258 $1 != "nameserver" { print $0 } 259 END { 260 writedomain() 261 n = split(ENVIRON["dnsservers"], s) 262 for (i = 1; i <= n; ++i) 263 printf("nameserver %s\n", s[i]) 264 }' 265 unset dnsservers dnsdomain 266 mv_file /tmp/resolv.conf.$$ /etc/resolv.conf 644 267 # 268 # Add dns to the nsswitch file, if it isn't already there. 269 # 270 update_nss hosts 271 update_nss ipnodes 272 273elif /usr/bin/grep '# Added by DHCP$' /etc/nsswitch.conf >/dev/null 2>&1; then 274 275 # If we added DNS to the hosts and ipnodes policy in the nsswitch, 276 # remove it. 277 /usr/bin/sed \ 278 -e '/# Added by DHCP$/d' \ 279 -e 's/^\(#hosts:\)\(.*[^#]\)\(#.*\)$/hosts: \2/' \ 280 -e 's/^\(#ipnodes:\)\(.*[^#]\)\(#.*\)$/ipnodes: \2/' \ 281 /etc/nsswitch.conf >/tmp/nsswitch.conf.$$ 282 283 mv_file /tmp/nsswitch.conf.$$ /etc/nsswitch.conf 644 284fi 285 286if [ "$_INIT_NET_STRATEGY" = "dhcp" ]; then 287 288 hostname=`/usr/bin/uname -n` 289 ipaddr=`/sbin/dhcpinfo Yiaddr` 290 update_hosts_file 291 292else 293 # We're not using a dhcp strategy, so host entries added by 294 # DHCP should be removed from /etc/inet/hosts. 295 296 if /usr/bin/grep '# Added by DHCP$' /etc/inet/hosts >/dev/null 2>&1; 297 then 298 /usr/bin/sed -e '/# Added by DHCP$/d' \ 299 /etc/inet/hosts > /tmp/hosts.$$ 300 mv_file /tmp/hosts.$$ /etc/inet/hosts 444 301 fi 302fi 303 304# 305# Load the IPQoS configuration. 306# This is backgrounded so that any remote hostname lookups it performs 307# don't unduely delay startup. Any messages go via syslog. 308# 309 310if [ -f /usr/sbin/ipqosconf -a -f /etc/inet/ipqosinit.conf ]; then 311 /usr/sbin/ipqosconf -s -a /etc/inet/ipqosinit.conf & 312fi 313 314# 315# Add a static route for multicast packets out our default interface. 316# The default interface is the interface that corresponds to the node name. 317# Run in background subshell to avoid waiting for name service. 318# 319 320( 321if [ "$_INIT_NET_STRATEGY" = "dhcp" ]; then 322 mcastif=`/sbin/dhcpinfo Yiaddr` || mcastif=$_INIT_UTS_NODENAME 323else 324 mcastif=$_INIT_UTS_NODENAME 325fi 326 327echo "Setting default IPv4 interface for multicast:" \ 328 "add net 224.0/4: gateway $mcastif" 329 330/usr/sbin/route -n add -interface 224.0/4 -gateway "$mcastif" >/dev/null 331) & 332