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 2008 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 57NWAM_FMRI="svc:/network/physical:nwam" 58NETSVC_FMRI="svc:/network/service:default" 59 60interface=$2 61 62# If boot variables are not set, set variables we use 63[ -z "$_INIT_UTS_NODENAME" ] && _INIT_UTS_NODENAME=`/usr/bin/uname -n` 64 65# 66# This function removes the instance portion of the passed-in FMRI; for 67# example, 'svc:/network/service:default' becomes 'svc:/network/service'. 68# 69remove_fmri_inst () { 70 echo $1 | awk -F: ' { printf "%s:%s", $1, $2 } ' 71} 72 73# 74# This function returns true if this script was *not* invoked 75# by an instance of svc:/network/service. 76# 77fmri_is_not_netsvc () { 78 FMRI_1=`remove_fmri_inst $SMF_FMRI` 79 FMRI_2=`remove_fmri_inst $NETSVC_FMRI` 80 [ "$FMRI_1" = "$FMRI_2" ] && return 1 81 return 0 82} 83 84# 85# This function returns true if this script was *not* invoked 86# by the nwam instance of the network/physical service. 87# 88fmri_is_not_nwam () { 89 [ "&SMF_FMRI" = "$NWAM_FMRI" ] && return 1 90 return 0 91} 92 93# 94# This function returns true if the nwam service is not running, false 95# if it is. "running" is defined as "current state is online or next 96# state is online". 97# 98nwam_is_not_running() { 99 state=`/usr/bin/svcprop -p restarter/state $NWAM_FMRI` 100 nstate=`/usr/bin/svcprop -p restarter/next_state $NWAM_FMRI` 101 102 [ "$state" = "online" -o "$nextstate" = "online" ] && return 1 103 return 0 104} 105 106# 107# wait_nis 108# Wait up to 5 seconds for ypbind to obtain a binding. 109# 110wait_nis () 111{ 112 for i in 1 2 3 4 5; do 113 server=`/usr/bin/ypwhich 2>/dev/null` 114 [ $? -eq 0 -a -n "$server" ] && return 0 || sleep 1 115 done 116 return 1 117} 118 119# 120# This function takes two file names and the file mode as input. The two 121# files are compared for differences (using cmp(1)) and if different, the 122# second file is over written with the first. A chmod is done with the file 123# mode passed in. If the files are equal, the first file passed 124# in (the /tmp file) is deleted. 125# 126mv_file () 127{ 128 /usr/bin/cmp -s $1 $2 129 if [ $? -eq 1 ]; then 130 /usr/bin/mv $1 $2 131 # 132 # The umask during boot is configurable, which requires 133 # explicit setting of file permission modes when we 134 # create files. 135 # 136 /usr/bin/chmod $3 $2 137 else 138 /usr/bin/rm $1 139 fi 140} 141 142# 143# This function takes a DHCP parameter (as defined in /etc/dhcp/inittab) 144# and returns the value for that parameter returned by the DHCP server. 145# If the global 'interface' is defined, it will request the value learned 146# on that interface, else it will request the value learned on the primary 147# interface. 148# 149get_dhcp_var () 150{ 151 if [ -n "$interface" ]; then 152 /sbin/dhcpinfo -i $interface $1 153 else 154 /sbin/dhcpinfo $1 155 fi 156} 157 158# 159# This function returns true if the string "# Added by DHCP$" occurs in 160# the passed-in file, false otherwise. 161# 162dhcp_edits () 163{ 164 /usr/bin/grep '# Added by DHCP$' $1 >/dev/null 2>&1 165 return $? 166} 167 168# 169# update_resolv() 170# Go through /etc/resolv.conf and replace any existing domain or 171# nameserver entries with new ones derived from DHCP. Note that 172# it is important to preserve order of domain entries vs. search 173# entries; the search entries are reserved for administrator 174# customization and if placed after the domain entry will override 175# it. See resolv.conf(4). 176# 177# The first arg should be the dns servers string, the second 178# should be the dns domain. 179# 180update_resolv () 181{ 182 dnsservers=$1 183 dnsdomain=$2 184 185 if [ ! -f /etc/resolv.conf ]; then 186 /usr/bin/touch /etc/resolv.conf 187 fi 188 export dnsservers dnsdomain 189 /usr/bin/nawk </etc/resolv.conf >/tmp/resolv.conf.$$ ' 190 function writedomain() { 191 if (updated == 0) { 192 # Use only first domain, not a search list 193 split(ENVIRON["dnsdomain"], d) 194 if(length(d[1]) != 0) 195 printf("domain %s\n", d[1]) 196 } 197 ++updated 198 } 199 $1 == "domain" { writedomain(); next } 200 $1 != "nameserver" { print $0 } 201 END { 202 writedomain() 203 n = split(ENVIRON["dnsservers"], s) 204 for (i = 1; i <= n; ++i) 205 printf("nameserver %s\n", s[i]) 206 }' 207 unset dnsservers dnsdomain 208 mv_file /tmp/resolv.conf.$$ /etc/resolv.conf 644 209} 210 211# 212# update_nss 213# This routine takes as a parameter, the name of the respective policy 214# to change in the nsswitch.conf (hosts or ipnodes) to update with dns. 215# 216update_nss () 217{ 218 policy=$1; 219 # Add dns to the nsswitch file, if it isn't already there. 220 /usr/bin/awk ' $1 ~ /^'${policy}':/ { 221 n = split($0, a); 222 newl = a[1]; 223 if ($0 !~ /dns/) { 224 printf("#%s # Commented out by DHCP\n", $0); 225 updated = 0; 226 for (i = 2; i <= n; i++) { 227 if (updated == 0 && index(a[i], "[") == 1) { 228 newl = newl" dns"; 229 updated++; 230 } 231 newl = newl" "a[i]; 232 } 233 if (updated == 0) { 234 newl = newl" dns"; 235 updated++; 236 } 237 if (updated != 0) 238 newl = newl" # Added by DHCP"; 239 else 240 newl = $0; 241 printf("%s\n", newl); 242 } else 243 printf("%s\n", $0); 244 } $1 !~ /^'${policy}':/ { printf("%s\n", $0); }' /etc/nsswitch.conf \ 245 >/tmp/nsswitch.conf.$$ 246 247 mv_file /tmp/nsswitch.conf.$$ /etc/nsswitch.conf 644 248} 249 250# 251# Remove any lines with the "# Added by DHCP" tag from /etc/nsswitch.conf; 252# also uncomment hosts and ipnodes entries which were previously commented 253# out by this script. 254# 255cleanup_nss () 256{ 257 /usr/bin/sed \ 258 -e '/# Added by DHCP$/d' \ 259 -e 's/^\(#hosts:\)\(.*[^#]\)\(#.*\)$/hosts: \2/' \ 260 -e 's/^\(#ipnodes:\)\(.*[^#]\)\(#.*\)$/ipnodes: \2/' \ 261 /etc/nsswitch.conf >/tmp/nsswitch.conf.$$ 262 263 mv_file /tmp/nsswitch.conf.$$ /etc/nsswitch.conf 644 264} 265 266# 267# Remove any lines with the "# Added by DHCP" tag from /etc/inet/hosts. 268# 269cleanup_hosts () 270{ 271 /usr/bin/nawk '{ 272 if (index($0, "# Added by DHCP") == 0 || 273 $1 == "127.0.0.1" || $1 == "::1") { 274 print $0 275 } 276 }' /etc/inet/hosts > /tmp/hosts.$$ 277 mv_file /tmp/hosts.$$ /etc/inet/hosts 444 278} 279 280# 281# We now need to reset the netmask and broadcast address for our network 282# interfaces. Since this may result in a name service lookup, we want to 283# now wait for NIS to come up if we previously started it. 284# 285# Only do this in the non-nwam case. 286# 287if fmri_is_not_nwam; then 288 domain=`/usr/bin/domainname 2>/dev/null` 289 290 [ -z "$domain" ] || [ ! -d /var/yp/binding/$domain ] || wait_nis || \ 291 echo "WARNING: Timed out waiting for NIS to come up" >& 2 292 293 # 294 # Re-set the netmask and broadcast addr for all IP interfaces. This 295 # ifconfig is run here, after waiting for name services, so that 296 # "netmask +" will find the netmask if it lives in a NIS map. The 'D' 297 # in -auD tells ifconfig NOT to mess with the interface if it is 298 # under DHCP control 299 # 300 /usr/sbin/ifconfig -auD4 netmask + broadcast + 301fi 302 303# Uncomment these lines to print complete network interface configuration 304# echo "network interface configuration:" 305# /usr/sbin/ifconfig -a 306 307# 308# If our network configuration strategy is DHCP, check for DNS 309# configuration parameters obtained from the DHCP server. 310# 311# If NWAM is enabled, it will invoke this script to do this configuration 312# whenever a DHCP lease is obtained; in that case, this configuration 313# should *not* happen when svc:network/service is starting, as it will 314# interfere with the configuration performed by NWAM. 315# 316if nwam_is_not_running || fmri_is_not_netsvc; then 317 318 smf_netstrategy 319 320 if [ "$_INIT_NET_STRATEGY" = "dhcp" ]; then 321 dnsservers=`get_dhcp_var DNSserv` 322 dnsdomain=`get_dhcp_var DNSdmain` 323 else 324 dnsservers="" 325 dnsdomain="" 326 fi 327 328 if [ -n "$dnsservers" ]; then 329 # 330 # add settings retrieved from dhcp server to /etc/resolv.conf 331 # 332 update_resolv "$dnsservers" "$dnsdomain" 333 334 # 335 # Add dns to the nsswitch file, if it isn't already there. 336 # 337 update_nss hosts 338 update_nss ipnodes 339 340 elif dhcp_edits /etc/nsswitch.conf; then 341 # If we added DNS to the hosts and ipnodes 342 # policy in the nsswitch, remove it. 343 cleanup_nss 344 fi 345fi 346 347if dhcp_edits /etc/inet/hosts; then 348 # Clean up any old DHCP-added entries 349 # (except loopback) in the hosts file. 350 cleanup_hosts 351fi 352 353# 354# If we were invoked by NWAM, can exit now (skipping the ipqos config) 355# 356if [ -z "$SMF_FMRI" ] || [ "$SMF_FMRI" = "$NWAM_FMRI" ]; then 357 exit 0 358fi 359 360# 361# Load the IPQoS configuration. 362# This is backgrounded so that any remote hostname lookups it performs 363# don't unduely delay startup. Any messages go via syslog. 364# 365 366if [ -f /usr/sbin/ipqosconf -a -f /etc/inet/ipqosinit.conf ]; then 367 /usr/sbin/ipqosconf -s -a /etc/inet/ipqosinit.conf & 368fi 369