sysconfig/network-scripts/functions.network

   1 #!/bin/sh - keep it for file(1) to get bourne shell script result
   2 #
   3 # $Id$
   4 #
   5 # This is not a shell script; it provides functions to network scripts
   6 # that source it.
   7
   8 source_config ()
   9 {
  10         typeset foundconfig=0
  11
  12         DEVNAME=${CONFIG##*/}
  13         DEVNAME=${DEVNAME##ifcfg-}
  14         DEVNAME=${DEVNAME##tnlcfg-}
  15
  16         if [[ "$CONFIG" = /* ]]; then
  17                 if [ -f "$CONFIG" ] ; then
  18                         . "$CONFIG"
  19                         foundconfig=1
  20                 fi
  21         elif [ -f "/etc/sysconfig/interfaces/$CONFIG" ] ; then
  22                 . "/etc/sysconfig/interfaces/$CONFIG"
  23                 foundconfig=1
  24         fi
  25
  26         # This is sanity check so that if you've copied ifcfg-eth0 to ifcfg-eth1
  27         # and forgot to alter DEVICE= line you won't accidentally bring down eth0
  28         # while executing ifdown eth1. We do that only if configuration file exists
  29         # (sometimes ifcfg-xyz isn't needed at all like server-side pppoe pppX interfaces)
  30         if [ "$foundconfig" -eq "1" -a "$DEVICE" -a  "$DEVNAME" != "$DEVICE" ]; then
  31                 echo >&2 "$0: DEVICE specified in $CONFIG does not match filename. Aborting!"
  32                 exit 1
  33         fi
  34
  35         if [ "${PREFIX}" ] && [[ "$IPADDR" != */* ]]; then
  36                 IPADDR="$IPADDR/$PREFIX"
  37         fi
  38 }
  39
  40 do_netreport ()
  41 {
  42         # Notify programs that have requested notification
  43         ( cd /var/run/netreport || exit
  44         for i in * ; do
  45                 [ -f $i ] && kill -SIGIO $i >/dev/null 2>&1 || \
  46                         rm -f $i >/dev/null 2>&1
  47         done
  48         )
  49 }
  50
  51 need_hostname()
  52 {
  53         local hostname=$(hostname)
  54         if [ "$hostname" = "(none)" -o "$hostname" = "localhost" -o \
  55              "$hostname" = "localhost.localdomain" ]; then
  56                 NEEDHOSTNAME=yes
  57         else
  58                 unset NEEDHOSTNAME
  59         fi
  60 }
  61
  62 set_hostname()
  63 {
  64         typeset hostname domain
  65
  66         hostname=$(echo $1 | awk ' { gsub(/\..*$/,NIL); print $0; } ')
  67         domain=$(echo $1 | awk ' { sub(/^[^\.]*\./,NIL); print $0; } ')
  68
  69         if [ "$hostname" ]; then
  70                 echo "$hostname" > /etc/HOSTNAME
  71                 hostname $hostname
  72         fi
  73
  74         if [ "$domain" ]; then
  75                 >/etc/resolv.conf.new
  76                 if ! grep -q "search $domain" /etc/resolv.conf ; then
  77                         echo "search $domain" >> /etc/resolv.conf.new
  78                 fi
  79                 echo "domain $domain" >> /etc/resolv.conf.new
  80                 grep -v "^domain " /etc/resolv.conf >> /etc/resolv.conf.new
  81                 mv -f /etc/resolv.conf.new /etc/resolv.conf
  82         fi
  83 }
  84
  85 set_dhcpclient()
  86 {
  87         if [ "$BOOTPROTO" = "bootp" -o "$BOOTPROTO" = "pump" ]; then
  88                 DHCP_CLIENT=/sbin/pump
  89         fi
  90
  91         if [ -z "$DHCP_CLIENT" ]; then
  92                 if [ -x /sbin/dhcpcd ]; then
  93                         DHCP_CLIENT=/sbin/dhcpcd
  94                 elif [ -x /sbin/dhclient ]; then
  95                         DHCP_CLIENT=/sbin/dhclient
  96                 elif [ -x /sbin/dhcpxd ]; then
  97                         DHCP_CLIENT=/sbin/dhcpxd
  98                 elif [ -x /sbin/pump ]; then
  99                         DHCP_CLIENT=/sbin/pump
 100                 else
 101                         nls "Can't find a dhcp client."
 102                         exit 1
 103                 fi
 104         fi
 105 }
 106
 107 # Setup Network Address Translation (NAT)
 108 setup_nat()
 109 {
 110         typeset src via dst
 111
 112         if [ -r /etc/sysconfig/static-nat ]; then
 113                 if [ "$1" = "on" ]; then
 114                         grep "^[0-9]" /etc/sysconfig/static-nat | while read src via dst; do
 115                                 /sbin/ip route add nat $dst via $src
 116                                 /sbin/ip rule add from $src nat $dst
 117                         done
 118                 elif [ "$1" = "off" ]; then
 119                         /sbin/ip route show table all | egrep "^nat[[:blank:]]" | while read nat dst via src args; do
 120                                 /sbin/ip rule del from $src nat $dst
 121                                 /sbin/ip route del nat $dst via $src
 122                         done
 123                 fi
 124         fi
 125 }
 126
 127 # Setup static ARP
 128 static_arp()
 129 {
 130         typeset rc arpdev host hwaddr flags neflags
 131
 132         if is_yes "$STATIC_ARP" && [ -r /etc/ethers ]; then
 133                 if [ -x /sbin/arp ]; then
 134                         run_cmd "Setting static ARP entries" /sbin/arp -f /etc/ethers
 135                 else
 136                         show "Setting static ARP entries"; busy
 137                         rc=0
 138                         arpdev=$(ip link show | awk -F':' '(/UP/) && ! (/NOARP/) && ! (/lo:/) && ! (/NONE:/) { print $2; exit }')
 139                         if [ -z "$arpdev" ]; then
 140                                 rc=1
 141                         else
 142                                 # ip supports only ip addresses
 143                                 grep "^[0-9]" /etc/ethers | \
 144                                 while read host hwaddr flags; do
 145                                         case "$flags" in
 146                                           *temp*)
 147                                                 neflags="nud stale"
 148                                                 ;;
 149                                           *)
 150                                                 neflags="nud permanent"
 151                                                 ;;
 152                                         esac
 153                                         if ! /sbin/ip neigh add $host lladdr $hwaddr $neflags dev $arpdev; then
 154                                                 rc=1
 155                                         fi
 156                                 done
 157                         fi
 158                         if [ "$rc" -gt 0 ]; then
 159                                 fail
 160                         fi
 161                 fi
 162         fi
 163 }
 164
 165 static_rarp()
 166 {
 167         if is_yes "$STATIC_RARP"; then
 168                 if [ ! -e /proc/net/rarp ]; then
 169                         _modprobe single -k rarp
 170                 fi
 171                 if [ -r /etc/ethers -a -x /sbin/rarp ]; then
 172                         run_cmd "Setting static RARP entries" /sbin/rarp -f /etc/ethers
 173                 fi
 174         fi
 175 }
 176
 177 vlan_setup()
 178 {
 179         if [ -x /sbin/vconfig -a -e /proc/net/vlan/config ] && $(echo $DEVICE | grep -q ^eth); then
 180                 /sbin/vconfig set_name_type DEV_PLUS_VID_NO_PAD 2>&1 > /dev/null
 181                 ETH_VLANS="yes"
 182         else
 183                 ETH_VLANS="no"
 184         fi
 185 }
 186
 187 # Set up all IP && IP parameter variables
 188 setup_ip_param ()
 189 {
 190         # detect network device type (ie. dummy, eth for dummy0, eth0 ..)
 191         if [ -z "$DEVICETYPE" ]; then
 192                 DEVICETYPE=$(echo $DEVICE | awk ' { gsub(/[0-9]*\.?[0-9]*$/,NUL); print $0 } ')
 193         fi
 194
 195         # Setup DEVICETYPE for special cases.
 196         if (echo ${DEVICE} | LC_ALL=C egrep -q '^[a-z0-9]+\.[0-9]+$'); then
 197                 DEVICETYPE=vlan
 198         fi
 199
 200         # real name of device (ie. is eth0 for eth0,eth0:1,eth0:alias)
 201         DEVICE=$(echo $DEVICE | awk ' { gsub(/:.*$/,NUL); print $0 } ')
 202
 203         eval IP4ADDR="\$IPADDR${IP4_PRIM_IF:-}"
 204         # check if ipaddr doesn't contain network length -- use $NETMASK then
 205         if [[ "$IP4ADDR" != */* ]] && [ "$NETMASK" ]; then
 206                 IP4ADDR=$IP4ADDR/$(calcprefix $NETMASK)
 207         fi
 208
 209         # check if we have ipv6 or ipv4 address
 210         if [[ "${IP4ADDR}" = *:* ]]; then
 211                 IP6ADDR=${IP4ADDR}
 212                 IP4ADDR=""
 213         else
 214                 eval IP4ADDROPT="\$IP_AOPTS${IP4_PRIM_IF:-}"
 215                 eval IP4ROUTEOPT="\$IP_ROPTS${IP4_PRIM_IF:-}"
 216         fi
 217         if [ "${IP6_PRIM_IF}" ] ; then
 218                 eval IP6ADDR="\$IPADDR${IP6_PRIM_IF:-}"
 219                 eval IP6ADDROPT="\$IPV6_AOPTS${IP6_PRIM_IF:-}"
 220         fi
 221         if [ "${IP4_SRC_IF}" ] ; then
 222                 eval IP4SRCADDR="\$IPADDR${IP4_SRC_IF}"
 223                 IP4SRCADDR=$(echo ${IP4SRCADDR} | awk ' { gsub(/\/.*/,NIL); print "src " $0; } ')
 224         fi
 225         if [ "${IP6_SRC_IF}" ] ; then
 226                 eval IP6SRCADDR="\$IPADDR${IP6_SRC_IF}"
 227                 IP6SRCADDR=$(echo ${IP6SRCADDR} | awk ' { gsub(/\/.*/,NIL); print "src " $0; } ')
 228         fi
 229
 230         # new rc-scripts 0.4.x option
 231         if [ -z "$HANDLING" ]; then
 232                 HANDLING=0
 233         fi
 234
 235         # set handling for bridge
 236         case "$DEVICETYPE" in
 237           br|atm|lec|irda|vlan)
 238                 HANDLING=1
 239                 ;;
 240         esac
 241
 242         # Multicast ready devices
 243         if is_yes "$MULTICAST"; then
 244                 MULTICAST="on"
 245         else
 246                 case "$DEVICETYPE" in
 247                   eth|br)
 248                         MULTICAST="on"
 249                         ;;
 250                   *)
 251                         MULTICAST="off"
 252                         ;;
 253                 esac
 254         fi
 255
 256         # ARP ready devices
 257         if [ "$ARP" ] ; then
 258                 if is_yes "$ARP"; then
 259                         ARP="arp on"
 260                 else
 261                         ARP="arp off"
 262                 fi
 263         fi
 264 }
 265
 266 check_device_down ()
 267 {
 268         if (ip link show dev ${DEVICE} 2> /dev/null | grep -q UP); then
 269                 return 1
 270         else
 271                 return 0
 272         fi
 273 }
 274
 275 setup_ip_gw_ro ()
 276 {
 277         # IPv4 gateway
 278         if is_yes "$IPV4_NETWORKING"; then
 279                 if [ -z "${GATEWAYDEV}" -o "${GATEWAYDEV}" = "${DEVICE}" ]; then
 280                         # set up default gateway
 281                         if [ "${GATEWAY}" ]; then
 282                                 ip -4 route add default via ${GATEWAY} dev ${DEVICE} ${IP4SRCADDR} onlink 2>/dev/null
 283                                 if [ $? = 0 ]; then
 284                                         DEFGW=${GATEWAY}
 285                                 else
 286                                         # The default gateway could be set via eth0, while bringing up eth1 we shouldn't set default gateway again.
 287                                         # To prevent this message just set GATEWAYDEV=eth0 in /etc/sysconfig/network.
 288                                         nls "Warning: Default gateway already set proably via other interface. Do you need to setup GATEWAYDEV?"
 289                                 fi
 290                         elif [ "${GATEWAYDEV}" = "${DEVICE}" ]; then
 291                                 ip -4 route add default dev ${DEVICE} ${IP4SRCADDR}
 292                         fi
 293                 fi
 294         fi
 295
 296         # IPv6 gateway && IPv6 globalroute
 297         if is_yes "$IPV6_NETWORKING"; then
 298                 if [ -z "${GATEWAY6DEV}" -o "${GATEWAY6DEV}" = "${DEVICE}" ]; then
 299                         # set up default gateway
 300                         if [ "${GATEWAY6}" ]; then
 301                                 ip -6 route add default via ${GATEWAY6} dev ${DEVICE} ${IP6SRCADDR} onlink
 302                                 DEFGW6=${GATEWAY6}
 303                         elif [ "${GATEWAY6DEV}" = "${DEVICE}" ]; then
 304                                 ip -6 route add default dev ${DEVICE} ${IP6SRCADDR}
 305                         fi
 306                 fi
 307                 if [ -z "${IPV6_GLOBALROUTEDEV}" -o "${IPV6_GLOBALROUTEDEV}" = "${DEVICE}" ]; then
 308                         # set up default route
 309                         if [ "${IPV6_GLOBALROUTEGW}" ]; then
 310                                 ip -6 route add 2000::/3 via ${IPV6_GLOBALROUTEGW} dev ${DEVICE} ${IP6SRCADDR} onlink
 311                         elif [ "${IPV6_GLOBALROUTEDEV}" = "${DEVICE}" ]; then
 312                                 ip -6 route add 2000::/3 dev ${DEVICE} ${IP6SRCADDR}
 313                         fi
 314                 fi
 315         fi
 316 }
 317
 318 #
 319 # following function sets up routes not associated to any device
 320 # eg. unreachable or blackhole routes
 321 # (c) 1999 Jacek Konieczny <jajcus@pld-linux.org>
 322 #
 323 setup_routes()
 324 {
 325         typeset args
 326
 327         if [ -f /etc/sysconfig/static-routes ]; then
 328                 if [ "$1" = "on" -o "$1" = "yes" ] ; then
 329                         egrep "^(none|any)[[:blank:]]" /etc/sysconfig/static-routes | while read device args; do
 330                                 /sbin/ip route add $args
 331                         done
 332                 else
 333                         egrep "^(none|any)[[:blank:]]" /etc/sysconfig/static-routes | while read device args; do
 334                                 /sbin/ip route del $args 2>/dev/null
 335                         done
 336                 fi
 337         fi
 338 }
 339
 340 # Add ONLY IPv4 address (IPv6 address is added automaticly)
 341 set_up_loopback()
 342 {
 343         if is_yes "$IPV4_NETWORKING"; then
 344                 ip addr add 127.0.0.1/8 dev lo
 345         fi
 346         ip link set dev lo up
 347 }
 348
 349 set_down_loopback()
 350 {
 351         ip addr flush dev lo 2>&1 | grep -v "Nothing to flush"
 352         ip link set dev lo down
 353 }
 354
 355 modprobe_net()
 356 {
 357         if is_yes "$IPV6_NETWORKING" && is_module "ipv6"; then
 358                 _modprobe single -k ipv6
 359         fi
 360
 361         if is_yes "$IPX" && is_module "ipx"; then
 362                 _modprobe single -k ipx
 363         fi
 364 }
 365
 366 # calculate network prefix from given network mask
 367 calcprefix()
 368 {
 369         typeset old_IFS netmask prefix endp
 370
 371         old_IFS=$IFS
 372         IFS='.'
 373         netmask=$(echo $1)
 374         IFS=$old_IFS
 375
 376         prefix=0
 377         endp=0
 378         for n in $netmask ; do
 379                 for i in 128 64 32 16 8 4 2 1 ; do
 380                         if [ $(($n & $i)) -ne 0 ]; then
 381                                 if [ $endp -eq 0 ]; then
 382                                         prefix=$(($prefix + 1))
 383                                 else
 384                                         echo "32"
 385                                         return
 386                                 fi
 387                         else
 388                                 endp=1
 389                         fi
 390                 done
 391         done
 392         echo $prefix
 393 }
 394
 395 # calculate network mask from given prefix
 396 # (c) 1999 Grzegorz Stanislawski <stangrze@open.net.pl>
 397 calcnetmask()
 398 {
 399         typeset prefix a MASK
 400
 401         MASK=""
 402         if [ "${1##[0-9]*}" ]; then
 403                 prefix=32
 404         else
 405                 typeset -i prefix=$1
 406         fi
 407         for i in 1 2 3 4; do
 408                 case $prefix in
 409                   7)    a=254 ;;
 410                   6)    a=252 ;;
 411                   5)    a=248 ;;
 412                   4)    a=240 ;;
 413                   3)    a=224 ;;
 414                   2)    a=192 ;;
 415                   1)    a=128 ;;
 416                   *)
 417                         [ $prefix -ge 8 ] && a=255
 418                         [ $prefix -le 0 ] && a=0
 419                         ;;
 420                 esac
 421
 422                 prefix="$(( $prefix - 8))"
 423                 if [ -z "$MASK" ]; then
 424                         MASK=$a
 425                 else
 426                         MASK=$MASK.$a
 427                 fi
 428         done
 429
 430         echo $MASK
 431         return
 432 }
 433
 434 # Retrievies PPPD PID and real interface name from /var/run/ppp-*.pid
 435 get_ppp_device_and_pid ()
 436 {
 437         if [ -f "/var/run/ppp-$DEVNAME.pid" ] ; then
 438                 eval $(
 439                 {
 440                         read PID ; echo "PID='$PID'"
 441                         read REALDEVICE ; echo "REALDEVICE=$REALDEVICE"
 442                 } < "/var/run/ppp-$DEVNAME.pid")
 443         fi
 444
 445         if [ -z "$REALDEVICE" ] ; then
 446                 REALDEVICE=$DEVICE
 447         fi
 448 }
 449
 450 # following function setups advanced routing rules
 451 # Olgierd Pieczul <wojrus@pld-linux.org>
 452 setup_ip_rules ()
 453 {
 454         typeset args prio from src
 455
 456         if [ -f /etc/sysconfig/static-routes ] ; then
 457                 if is_yes "$1"; then
 458                         egrep "^(from|to|iif|tos|fwmark|dev|pref|priority|prio)[[:blank:]]" /etc/sysconfig/static-routes | while read args; do
 459                                 /sbin/ip rule add $args
 460                         done
 461                 elif is_no "$1"; then
 462                         /sbin/ip rule show | egrep -v -e "from all lookup (main|default|local) \$" -e " map-to " | while read prio from src args; do
 463                                 [ "$src" == "all" ] && ip rule delete $args || ip rule delete $from $src $args
 464                         done
 465                 fi
 466         fi
 467 }
 468
 469 is_wireless_device ()
 470 {
 471         if [ -x /sbin/iwconfig ]; then
 472                 LC_ALL=C iwconfig "${1}" 2>&1 | grep -q "no wireless extensions" || return 0
 473         fi
 474         return 1
 475 }
 476
 477 wireless_param()
 478 {
 479         device="$1"
 480         if [ "$2" = "br" ]; then
 481                 prefix="${device}_"
 482         else
 483                 prefix=""
 484         fi
 485
 486         local val wlan_mode
 487
 488         if val="$(eval echo \$${prefix}WLAN_NICKNAME)" && [ -z "$val" ]; then
 489                  WLAN_NICKNAME="$(hostname -f 2>/dev/null || hostname 2>/dev/null || echo localhost)"
 490         else
 491                  WLAN_NICKNAME="$val"
 492         fi
 493
 494         # wlan mode needs to be first
 495         wlan_mode="$(eval echo \$${prefix}WLAN_MODE)" && [ "$wlan_mode" ] && \
 496                 iwconfig ${device} mode "$wlan_mode"
 497
 498         iwconfig ${device} nick ${WLAN_NICKNAME}
 499
 500         val="$(eval echo \$${prefix}WLAN_NWID)" && [ "$val" ] && \
 501                 iwconfig ${device} nwid "$val"
 502
 503         if [ "$wlan_mode" != "Managed" -a "$wlan_mode" != "managed" ]; then
 504                 if val="$(eval echo \$${prefix}WLAN_FREQ)" && [ "$val" ]; then
 505                         iwconfig ${device} freq "$val"
 506                 elif val="$(eval echo \$${prefix}WLAN_CHANNEL)" && [ "$val" ]; then
 507                         iwconfig ${device} channel "$val"
 508                 fi
 509         fi
 510
 511         val="$(eval echo \$${prefix}WLAN_SENS)" && [ "$val" ] && \
 512                 iwconfig ${device} sens "$val"
 513         val="$(eval echo \$${prefix}WLAN_AP)" && [ "$val" ] && \
 514                 iwconfig ${device} ap "$val"
 515         val="$(eval echo \$${prefix}WLAN_BITRATE)" && [ "$val" ] && \
 516                 iwconfig ${device} rate "$val"
 517         val="$(eval echo \$${prefix}WLAN_RTS_THRESHOLD)" && [ "$val" ] && \
 518                 iwconfig ${device} rts "$val"
 519         val="$(eval echo \$${prefix}WLAN_FRAGMENTATION_THRESHOLD)" && [ "$val" ] && \
 520                 iwconfig ${device} frag "$val"
 521
 522         local wlan_encryption="$(eval echo \$${prefix}WLAN_ENCRYPTION)"
 523         local wlan_key="$(eval echo \$${prefix}WLAN_KEY)"
 524         # TODO: well, actually shouldn't set WLAN_KEY if other keys than current are set
 525         if [ "$wlan_key" ]; then
 526                 # wlan key can contain index of key to set
 527                 # to set other than current keys suffix with 1-4:
 528                 local idx
 529                 for idx in 1 2 3 4; do
 530                         val="$(eval echo \$${prefix}WLAN_KEY_$idx)"
 531                         [ "$val" ] || continue
 532                         iwconfig ${device} key "[$idx]" "$val"
 533                 done
 534                 if val="$(eval echo \$${prefix}WLAN_KEY_CURRENT)" && [ "$val" ]; then
 535                         iwconfig ${device} key "[$val]"
 536                 else
 537                         iwconfig ${device} key "$wlan_key"
 538                 fi
 539
 540                 [ "$wlan_encryption" ] && iwconfig ${device} key "$wlan_encryption"
 541         fi
 542
 543         if is_no "$wlan_encryption"; then
 544                 iwconfig ${device} key off
 545         fi
 546         val="$(eval echo \$${prefix}WLAN_POWER)" && [ "$val" ] && \
 547                 iwconfig ${device} power "$val"
 548         val="$(eval echo \$${prefix}WLAN_TXPOWER)" && [ "$val" ] && \
 549                 iwconfig ${device} txpower "$val"
 550         val="$(eval echo \$${prefix}WLAN_RETRY)" && [ "$val" ] && \
 551                 iwconfig ${device} retry "$val"
 552         val="$(eval echo \$${prefix}WLAN_NWID)" && [ "$val" ] && \
 553                 iwconfig ${device} nwid "$val"
 554
 555         # essid should be last due to network rescanning by wlan devices
 556         val="$(eval echo \$${prefix}WLAN_ESSID)" && [ "$val" ] && \
 557                 iwconfig ${device} essid "$val"
 558
 559         if is_yes "$(eval echo \$${prefix}WLAN_COMMIT)"; then
 560                 iwconfig ${device} commit
 561         fi
 562 }
 563
 564 check_mii_tool ()
 565 {
 566         [ -x /sbin/mii-tool ] || return 2
 567         output=$(LC_ALL=C mii-tool $1 2>&1)
 568         echo $output | grep -q "link ok" && return 1
 569         echo $output | grep -q "no link" && return 0 || return 2
 570 }
 571
 572 check_ethtool ()
 573 {
 574         [ -x /sbin/ethtool ] || return 2
 575         output=$(LC_ALL=C ethtool $1 2>&1)
 576         echo $output | grep -q "Link detected: yes" && return 1
 577         echo $output | grep -q "Link detected: no" && return 0 || return 2
 578 }
 579
 580 check_iwconfig ()
 581 {
 582         [ -x /sbin/iwconfig ] || return 2
 583         output=$(LC_ALL=C iwconfig $1 2>&1)
 584         echo $output | grep -q "radio off" && return 0 || return 2
 585 }
 586
 587 check_link_down ()
 588 {
 589         if [ -x /sbin/mii-tool -o -x /sbin/ethtool -o -x /sbin/iwconfig ]; then
 590                 if ! LC_ALL=C ip link show dev $1 2>/dev/null| grep -q UP ; then
 591                         ip link set dev $1 up >/dev/null 2>&1
 592                         timeout=0
 593                         while [ $timeout -le 10 ]; do
 594                                 check_mii_tool $1
 595                                 m=$?
 596                                 check_ethtool $1
 597                                 e=$?
 598                                 check_iwconfig $1
 599                                 i=$?
 600                                 if [ $m -eq 1 ] || [ $e -eq 1 ] ; then
 601                                         return 1
 602                                 fi
 603                                 if [ $m -eq 2 ] && [ $e -eq 2 ] && [ $i -eq 2 ]; then
 604                                         return 1
 605                                 fi
 606                                 usleep 500000
 607                                 timeout=$((timeout+1))
 608                         done
 609                         return 0
 610                 fi
 611         fi
 612         return 1
 613 }
 614
 615 # This must be last line !
 616 # vi:syntax=sh