wok-6.x annotate udhcpc6-fake/stuff/etc/dhclient-script @ rev 10990

Up: bluez to 4.96.
author Christopher Rogers <slaxemulator@gmail.com>
date Thu Oct 13 02:10:55 2011 +0000 (2011-10-13)
parents
children 02c70d036ea0
rev   line source
pascal@7145 1 #!/bin/ash
pascal@7145 2
pascal@7145 3 # dhclient-script for Linux. Dan Halbert, March, 1997.
pascal@7145 4 # Updated for Linux 2.[12] by Brian J. Murrell, January 1999.
pascal@7145 5 # Modified for Debian. Matt Zimmerman and Eloy Paris, December 2003
pascal@7145 6 # Modified to remove useless tests for antiquated kernel versions that
pascal@7145 7 # this doesn't even work with anyway, and introduces a dependency on /usr
pascal@7145 8 # being mounted, which causes cosmetic errors on hosts that NFS mount /usr
pascal@7145 9 # Andrew Pollock, February 2005
pascal@7145 10 # Modified to work on point-to-point links. Andrew Pollock, June 2005
pascal@7145 11 # Modified to support passing the parameters called with to the hooks. Andrew Pollock, November 2005
pascal@7145 12
pascal@7145 13 # The alias handling in here probably still sucks. -mdz
pascal@7145 14
pascal@7145 15 make_resolv_conf() {
pascal@7145 16 if [ -n "$new_domain_name" -o -n "$new_domain_name_servers" ]; then
pascal@7145 17 # Find out whether we are going to mount / rw
pascal@7145 18 exec 9>&0 </etc/fstab
pascal@7145 19 rootmode=rw
pascal@7145 20 while read dev mnt type opts dump pass junk; do
pascal@7145 21 [ "$mnt" != / ] && continue
pascal@7145 22 case "$opts" in
pascal@7145 23 ro|ro,*|*,ro|*,ro,*)
pascal@7145 24 rootmode=ro
pascal@7145 25 ;;
pascal@7145 26 esac
pascal@7145 27 done
pascal@7145 28 exec 0>&9 9>&-
pascal@7145 29
pascal@7145 30 # Wait for /etc/resolv.conf to become writable
pascal@7145 31 if [ "$rootmode" = "rw" ]; then
pascal@7145 32 while [ ! -w /etc ]; do
pascal@7145 33 sleep 1
pascal@7145 34 done
pascal@7145 35 fi
pascal@7145 36
pascal@7145 37 local new_resolv_conf=/etc/resolv.conf.dhclient-new
pascal@7145 38 rm -f $new_resolv_conf
pascal@7145 39 if [ -n "$new_domain_name" ]; then
pascal@7145 40 echo search $new_domain_name >>$new_resolv_conf
pascal@7145 41 else # keep 'old' search/domain scope
pascal@7145 42 egrep -i '^ *[:space:]*(search|domain)' /etc/resolv.conf >> $new_resolv_conf
pascal@7145 43 fi
pascal@7145 44 if [ -n "$new_domain_name_servers" ]; then
pascal@7145 45 for nameserver in $new_domain_name_servers; do
pascal@7145 46 echo nameserver $nameserver >>$new_resolv_conf
pascal@7145 47 done
pascal@7145 48 else # keep 'old' nameservers
pascal@7145 49 sed -n /^\w*[Nn][Aa][Mm][Ee][Ss][Ee][Rr][Vv][Ee][Rr]/p /etc/resolv.conf >>$new_resolv_conf
pascal@7145 50 fi
pascal@7145 51 chown root.root $new_resolv_conf
pascal@7145 52 chmod 644 $new_resolv_conf
pascal@7145 53 mv -f $new_resolv_conf /etc/resolv.conf
pascal@7145 54 fi
pascal@7145 55 }
pascal@7145 56
pascal@7145 57 run_hook() {
pascal@7145 58 local script="$1"
pascal@7145 59 local exit_status
pascal@7145 60 shift # discard the first argument, then the rest are the script's
pascal@7145 61
pascal@7145 62 if [ -f $script ]; then
pascal@7145 63 . $script "$@"
pascal@7145 64 fi
pascal@7145 65
pascal@7145 66
pascal@7145 67 if [ -n "$exit_status" ] && [ "$exit_status" -ne 0 ]; then
pascal@7145 68 logger -p daemon.err "$script returned non-zero exit status $exit_status"
pascal@7145 69 save_exit_status=$exit_status
pascal@7145 70 fi
pascal@7145 71
pascal@7145 72 return $exit_status
pascal@7145 73 }
pascal@7145 74
pascal@7145 75 run_hookdir() {
pascal@7145 76 local dir="$1"
pascal@7145 77 local exit_status
pascal@7145 78 shift # See run_hook
pascal@7145 79
pascal@7145 80 if [ -d "$dir" ]; then
pascal@7145 81 for script in $(run-parts --list $dir); do
pascal@7145 82 run_hook $script "$@" || true
pascal@7145 83 exit_status=$?
pascal@7145 84 done
pascal@7145 85 fi
pascal@7145 86
pascal@7145 87 return $exit_status
pascal@7145 88 }
pascal@7145 89
pascal@7145 90 # Must be used on exit. Invokes the local dhcp client exit hooks, if any.
pascal@7145 91 exit_with_hooks() {
pascal@7145 92 exit_status=$1
pascal@7145 93
pascal@7145 94 # Source the documented exit-hook script, if it exists
pascal@7145 95 if ! run_hook /etc/dhcp3/dhclient-exit-hooks "$@"; then
pascal@7145 96 exit_status=$?
pascal@7145 97 fi
pascal@7145 98
pascal@7145 99 # Now run scripts in the Debian-specific directory.
pascal@7145 100 if ! run_hookdir /etc/dhcp3/dhclient-exit-hooks.d "$@"; then
pascal@7145 101 exit_status=$?
pascal@7145 102 fi
pascal@7145 103
pascal@7145 104 exit $exit_status
pascal@7145 105 }
pascal@7145 106
pascal@7145 107 set_hostname() {
pascal@7145 108 local current_hostname=$(hostname)
pascal@7145 109 if [ -z "$current_hostname" -o "$current_hostname" = "(none)" ]; then
pascal@7145 110 hostname "$new_host_name"
pascal@7145 111 fi
pascal@7145 112 }
pascal@7145 113
pascal@7145 114 if [ -n "$new_broadcast_address" ]; then
pascal@7145 115 new_broadcast_arg="broadcast $new_broadcast_address"
pascal@7145 116 fi
pascal@7145 117 if [ -n "$old_broadcast_address" ]; then
pascal@7145 118 old_broadcast_arg="broadcast $old_broadcast_address"
pascal@7145 119 fi
pascal@7145 120 if [ -n "$new_subnet_mask" ]; then
pascal@7145 121 new_subnet_arg="netmask $new_subnet_mask"
pascal@7145 122 fi
pascal@7145 123 if [ -n "$old_subnet_mask" ]; then
pascal@7145 124 old_subnet_arg="netmask $old_subnet_mask"
pascal@7145 125 fi
pascal@7145 126 if [ -n "$alias_subnet_mask" ]; then
pascal@7145 127 alias_subnet_arg="netmask $alias_subnet_mask"
pascal@7145 128 fi
pascal@7145 129 if [ -n "$new_interface_mtu" ] && [ $new_interface_mtu -ge 575 ]; then
pascal@7145 130 mtu_arg="mtu $new_interface_mtu"
pascal@7145 131 fi
pascal@7145 132 if [ -n "$IF_METRIC" ]; then
pascal@7145 133 metric_arg="metric $IF_METRIC" # interfaces(5), "metric" option
pascal@7145 134 fi
pascal@7145 135
pascal@7145 136
pascal@7145 137 # The action starts here
pascal@7145 138
pascal@7145 139 # Invoke the local dhcp client enter hooks, if they exist.
pascal@7145 140 run_hook /etc/dhcp3/dhclient-enter-hooks
pascal@7145 141 run_hookdir /etc/dhcp3/dhclient-enter-hooks.d
pascal@7145 142
pascal@7145 143 # Execute the operation
pascal@7145 144 case "$reason" in
pascal@7145 145 MEDIUM|ARPCHECK|ARPSEND)
pascal@7145 146 # Do nothing
pascal@7145 147 ;;
pascal@7145 148 PREINIT)
pascal@7145 149 # The DHCP client is requesting that an interface be
pascal@7145 150 # configured as required in order to send packets prior to
pascal@7145 151 # receiving an actual address. - dhclient-script(8)
pascal@7145 152
pascal@7145 153 if [ -n "$alias_ip_address" ]; then
pascal@7145 154 # Bring down alias interface. Its routes will disappear too.
pascal@7145 155 ifconfig $interface:0- inet 0
pascal@7145 156 fi
pascal@7145 157 ifconfig $interface inet 0 up
pascal@7145 158
pascal@7145 159 # We need to give the kernel some time to get the interface up.
pascal@7145 160 sleep 1
pascal@7145 161 ;;
pascal@7145 162 BOUND|RENEW|REBIND|REBOOT)
pascal@7145 163
pascal@7145 164 set_hostname
pascal@7145 165
pascal@7145 166 if [ -n "$old_ip_address" -a -n "$alias_ip_address" -a \
pascal@7145 167 "$alias_ip_address" != "$old_ip_address" ]; then
pascal@7145 168 # Possible new alias. Remove old alias.
pascal@7145 169 ifconfig $interface:0- inet 0
pascal@7145 170 fi
pascal@7145 171
pascal@7145 172 if [ -n "$old_ip_address" -a \
pascal@7145 173 "$old_ip_address" != "$new_ip_address" ]; then
pascal@7145 174 # IP address changed. Bringing down the interface will delete all routes,
pascal@7145 175 # and clear the ARP cache.
pascal@7145 176 ifconfig $interface inet 0
pascal@7145 177
pascal@7145 178 fi
pascal@7145 179
pascal@7145 180 if [ -z "$old_ip_address" -o "$old_ip_address" != "$new_ip_address" -o \
pascal@7145 181 "$reason" = "BOUND" -o "$reason" = "REBOOT" ]; then
pascal@7145 182
pascal@7145 183 ifconfig $interface inet $new_ip_address $new_subnet_arg \
pascal@7145 184 $new_broadcast_arg $mtu_arg
pascal@7145 185
pascal@7145 186 # point to point
pascal@7145 187 if [ "$new_subnet_mask" == "255.255.255.255" ]; then
pascal@7145 188 for router in $new_routers; do
pascal@7145 189 route add -host $router dev $interface
pascal@7145 190 done
pascal@7145 191 fi
pascal@7145 192
pascal@7145 193 for router in $new_routers; do
pascal@7145 194 route add default dev $interface gw $router $metric_arg
pascal@7145 195 done
pascal@7145 196 fi
pascal@7145 197
pascal@7145 198 if [ "$new_ip_address" != "$alias_ip_address" -a -n "$alias_ip_address" ];
pascal@7145 199 then
pascal@7145 200 ifconfig $interface:0- inet 0
pascal@7145 201 ifconfig $interface:0 inet $alias_ip_address $alias_subnet_arg
pascal@7145 202 route add -host $alias_ip_address $interface:0
pascal@7145 203 fi
pascal@7145 204
pascal@7145 205 make_resolv_conf
pascal@7145 206
pascal@7145 207 ;;
pascal@7145 208
pascal@7145 209 EXPIRE|FAIL|RELEASE|STOP)
pascal@7145 210 if [ -n "$alias_ip_address" ]; then
pascal@7145 211 # Turn off alias interface.
pascal@7145 212 ifconfig $interface:0- inet 0
pascal@7145 213 fi
pascal@7145 214
pascal@7145 215 if [ -n "$old_ip_address" ]; then
pascal@7145 216 # Shut down interface, which will delete routes and clear arp cache.
pascal@7145 217 ifconfig $interface inet 0
pascal@7145 218 fi
pascal@7145 219
pascal@7145 220 if [ -n "$alias_ip_address" ]; then
pascal@7145 221 ifconfig $interface:0 inet $alias_ip_address $alias_subnet_arg
pascal@7145 222 route add -host $alias_ip_address $interface:0
pascal@7145 223 fi
pascal@7145 224
pascal@7145 225 ;;
pascal@7145 226
pascal@7145 227 TIMEOUT)
pascal@7145 228 if [ -n "$alias_ip_address" ]; then
pascal@7145 229 ifconfig $interface:0- inet 0
pascal@7145 230 fi
pascal@7145 231
pascal@7145 232 ifconfig $interface inet $new_ip_address $new_subnet_arg \
pascal@7145 233 $new_broadcast_arg $mtu_arg
pascal@7145 234
pascal@7145 235 set -- $new_routers
pascal@7145 236 first_router="$1"
pascal@7145 237
pascal@7145 238 if ping -q -c 1 $first_router; then
pascal@7145 239 if [ "$new_ip_address" != "$alias_ip_address" -a \
pascal@7145 240 -n "$alias_ip_address" ]; then
pascal@7145 241 ifconfig $interface:0 inet $alias_ip_address $alias_subnet_arg
pascal@7145 242 route add -host $alias_ip_address dev $interface:0
pascal@7145 243 fi
pascal@7145 244
pascal@7145 245 # point to point
pascal@7145 246 if [ "$new_subnet_mask" == "255.255.255.255" ]; then
pascal@7145 247 for router in $new_routers; do
pascal@7145 248 route add -host $router dev $interface
pascal@7145 249 done
pascal@7145 250 fi
pascal@7145 251
pascal@7145 252 for router in $new_routers; do
pascal@7145 253 route add default dev $interface gw $router $metric_arg
pascal@7145 254 done
pascal@7145 255
pascal@7145 256 make_resolv_conf
pascal@7145 257 else
pascal@7145 258 # Changed from 'ifconfig $interface inet 0 down' - see Debian bug #144666
pascal@7145 259 ifconfig $interface inet 0
pascal@7145 260 exit_with_hooks 2 "$@"
pascal@7145 261 fi
pascal@7145 262
pascal@7145 263 ;;
pascal@7145 264 esac
pascal@7145 265
pascal@7145 266 exit_with_hooks 0