1 | #!/bin/sh
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2 | ########################################################################
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3 | # Begin /lib/services/ipv4-static
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4 | #
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5 | # Description : IPV4 Static Boot Script
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6 | #
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7 | # Authors : Nathan Coulson - nathan@linuxfromscratch.org
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8 | # Kevin P. Fleming - kpfleming@linuxfromscratch.org
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9 | # Update : Bruce Dubbs - bdubbs@linuxfromscratch.org
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10 | #
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11 | # Version : LFS 7.0
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12 | #
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13 | ########################################################################
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14 |
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15 | . /lib/lsb/init-functions
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16 | . ${IFCONFIG}
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17 |
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18 | if [ -z "${IP}" ]; then
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19 | log_failure_msg "\nIP variable missing from ${IFCONFIG}, cannot continue."
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20 | exit 1
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21 | fi
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22 |
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23 | if [ -z "${PREFIX}" -a -z "${PEER}" ]; then
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24 | log_warning_msg "\nPREFIX variable missing from ${IFCONFIG}, assuming 24."
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25 | PREFIX=24
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26 | args="${args} ${IP}/${PREFIX}"
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27 |
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28 | elif [ -n "${PREFIX}" -a -n "${PEER}" ]; then
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29 | log_failure_msg "\nPREFIX and PEER both specified in ${IFCONFIG}, cannot continue."
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30 | exit 1
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31 |
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32 | elif [ -n "${PREFIX}" ]; then
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33 | args="${args} ${IP}/${PREFIX}"
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34 |
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35 | elif [ -n "${PEER}" ]; then
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36 | args="${args} ${IP} peer ${PEER}"
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37 | fi
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38 |
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39 | if [ -n "${BROADCAST}" ]; then
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40 | args="${args} broadcast ${BROADCAST}"
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41 | fi
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42 |
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43 | case "${2}" in
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44 | up)
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45 | if [ "$(ip addr show ${1} | grep ${IP})" == "" ]; then
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46 | log_info_msg2 "\n" # Terminate the previous message
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47 | log_info_msg "Adding IPv4 address ${IP} to the ${1} interface..."
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48 | ip addr add ${args} dev ${1}
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49 | evaluate_retval
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50 |
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51 | if [ -n "${GATEWAY}" ]; then
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52 | if ip route | grep -q default; then
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53 | log_warning_msg "\nGateway already setup; skipping."
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54 | else
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55 | log_info_msg "Setting up default gateway..."
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56 | ip route add default via ${GATEWAY} dev ${1}
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57 | evaluate_retval
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58 | fi
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59 | fi
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60 | else
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61 | msg="Cannot add IPv4 address ${IP} to ${1}. Already present."
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62 | log_warning_msg "$msg"
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63 | fi
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64 | ;;
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65 |
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66 | down)
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67 | if [ "$(ip addr show ${1} | grep ${IP})" != "" ]; then
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68 | log_info_msg "Removing IPv4 address ${IP} from the ${1} interface..."
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69 | ip addr del ${args} dev ${1}
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70 | evaluate_retval
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71 | fi
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72 |
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73 | if [ -n "${GATEWAY}" ]; then
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74 | # Only remove the gateway if ther are no remaining ipv4 addresses
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75 | if [ "$(ip addr show ${1} | grep 'inet ')" != "" ]; then
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76 | log_info_msg "Removing default gateway..."
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77 | ip route del default
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78 | evaluate_retval
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79 | fi
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80 | fi
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81 | ;;
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82 |
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83 | *)
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84 | echo "Usage: ${0} [interface] {up|down}"
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85 | exit 1
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86 | ;;
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87 | esac
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88 |
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89 | # End /lib/services/ipv4-static
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