bootscripts/lfs/sysconfig/network-devices/ifup

   1 #!/bin/sh
   2 ########################################################################
   3 # Begin /sbin/ifup
   4 #
   5 # Description : Interface Up
   6 #
   7 # Authors     : Nathan Coulson - nathan@linuxfromscratch.org
   8 #               Kevin P. Fleming - kpfleming@linuxfromscratch.org
   9 # Update      : Bruce Dubbs - bdubbs@linuxfromscratch.org
  10 #
  11 # Version     : LFS 7.0
  12 #
  13 # Notes       : The IFCONFIG variable is passed to the SERVICE script
  14 #               in the /lib/boot directory, to indicate what file the
  15 #               service should source to get environmental variables.
  16 #
  17 ########################################################################
  18
  19 file=/etc/sysconfig/ifconfig.${1}
  20
  21 # Skip backup files
  22 [ "${file}" = "${file%""~""}" ] || exit 0
  23
  24 . /lib/boot/functions
  25
  26 boot_mesg "Bringing up the ${1} interface..."
  27 boot_mesg_flush
  28
  29 if [ ! -r "${file}" ]; then
  30    boot_mesg "${file} is missing or cannot be accessed." ${WARNING}
  31    echo_warning
  32    exit 1
  33 fi
  34
  35 . $file
  36
  37 if [ "$IFACE" = "" ]; then
  38    boot_mesg "${file} does not define an interface [IFACE]." ${FAILURE}
  39    echo_failure
  40    exit 1
  41 fi
  42
  43 # Do not process this service if started by boot, and ONBOOT
  44 # is not set to yes
  45 if [ "${IN_BOOT}" = "1" -a "${ONBOOT}" != "yes" ]; then
  46    echo_skipped
  47    exit 0
  48 fi
  49
  50 if [ -n "${SERVICE}" -a -x "/lib/boot/${SERVICE}" ]; then
  51    if [ -z "${CHECK_LINK}"         -o \
  52            "${CHECK_LINK}" = "y"   -o \
  53            "${CHECK_LINK}" = "yes" -o \
  54            "${CHECK_LINK}" = "1" ]; then
  55
  56       #  Bring up the interface
  57       if ip link show ${IFACE} > /dev/null 2>&1; then
  58          link_status=`ip link show ${IFACE}`
  59
  60          if [ -n "${link_status}" ]; then
  61             if ! echo "${link_status}" | grep -q UP; then
  62                ip link set ${IFACE} up
  63             fi
  64          fi
  65
  66       else
  67          boot_mesg "Interface ${IFACE} doesn't exist." ${WARNING}
  68          echo_warning
  69       fi
  70    fi
  71
  72    IFCONFIG=${file} /lib/boot/${SERVICE} ${IFACE} up
  73
  74 else
  75    boot_mesg "Unable to process ${file}.  Either" ${FAILURE}
  76    boot_mesg "the SERVICE variable was not set"
  77    boot_mesg "or the specified service cannot be executed."
  78    echo_failure
  79    exit 1
  80 fi
  81
  82 # End /sbin/ifup