1 | #! /bin/bash
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2 |
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3 | # This script generates rules for persistent network device naming
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4 | # Data from udev-182 75-persistent-net-generator.rules
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5 | # Updated fof udev-197 (DEVICES=en*)
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6 |
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7 | RULES=/etc/udev/rules.d/70-persistent-net.rules
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8 | DEVICES=$(eval echo /sys/class/net/{en*,eth*,ath*,wlan*[0-9],msh*,ra*,sta*,ctc*,lcs*,hsi*})
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9 |
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10 | function usage
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11 | {
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12 | echo $msg
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13 | echo "init-net-rules.sh is an LFS-specific script to initialize"
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14 | echo "$RULES"
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15 | exit 1
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16 | }
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17 |
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18 | declare -A VENDORS_IGNORED
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19 | VENDORS_IGNORED['52:54:00:']="kvm"
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20 | VENDORS_IGNORED['00:0c:29:']="vmware"
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21 | VENDORS_IGNORED['00:50:56:']="vmware"
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22 | VENDORS_IGNORED['00:15:5d:']="hyper-v"
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23 | VENDORS_IGNORED['00:00:00:']="invalid"
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24 |
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25 | declare -A VENDORS
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26 | VENDORS['02:07:01:']="Interlan, DEC, etc"
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27 | VENDORS['02:60:60:']="3com"
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28 | VENDORS['02:60:8c:']="3Com IBM PC; Imagen. etc"
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29 | VENDORS['02:a0:c9:']="intel"
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30 | VENDORS['02:aa:3c:']="Olivetti"
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31 | VENDORS['02:cf:1f:']="Masscomp, Silicon Graphics, etc"
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32 | VENDORS['02:e0:3b:']="Gigabit"
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33 | VENDORS['02:e6:d3:']="BTI"
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34 | VENDORS['52:54:00:']="Realtek"
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35 | VENDORS['52:54:4c:']="Novell"
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36 | VENDORS['52:54:ab:']="Realtek"
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37 | VENDORS['e2:0c:0f:']="Kingston"
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38 | VENDORS['00:16:3e:']="Xensource"
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39 |
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40 | function ignore_if
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41 | {
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42 | if [[ "${VENDORS_IGNORED[$VENDOR]}" != "" ]]; then return 0; fi
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43 | if [[ "${VENDORS[$VENDOR]}" != "" ]]; then return 1; fi
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44 |
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45 | byte2=$(echo $VENDOR | cut -c2)
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46 | if echo $byte2 | grep -q "[2367abef]"; then return 0; fi
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47 |
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48 | return 1 # Default is to not ignore
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49 | }
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50 |
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51 | function comment
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52 | {
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53 | # Not implemented
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54 | # SUBSYSTEMS=="pci"
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55 | # export COMMENT="PCI device $attr{vendor}:$attr{device} ($driver)"
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56 |
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57 | # SUBSYSTEMS=="usb", ATTRS{idVendor}=="?*"
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58 | # export COMMENT="USB device 0x$attr{idVendor}:0x$attr{idProduct} ($driver)"
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59 |
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60 | # SUBSYSTEMS=="pcmcia",
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61 | # export COMMENT="PCMCIA device $attr{card_id}:$attr{manf_id} ($driver)"
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62 |
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63 | # SUBSYSTEMS=="ieee1394",
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64 | # export COMMENT="Firewire device $attr{host_id})"
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65 |
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66 | # ibmveth likes to use "locally administered" MAC addresses
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67 | # DRIVERS=="ibmveth",
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68 | # export COMMENT="ibmveth ($id)"
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69 |
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70 | # S/390 uses id matches only, do not use MAC address match
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71 | # SUBSYSTEMS=="ccwgroup",
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72 | # export COMMENT="S/390 $driver device at $id",
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73 | # export MATCHID="$id"
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74 | # export MATCHDRV="$driver"
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75 | # export MATCHADDR=""
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76 |
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77 | # Default
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78 | driver=$(basename $(readlink -f $NIC/device/driver/module))
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79 | export COMMENT="net device ${driver}"
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80 | }
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81 |
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82 | if ! mountpoint -q /sys; then
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83 | msg="/sys must be mounted"
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84 | usage
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85 | fi
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86 |
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87 | if ! mountpoint -q /proc; then
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88 | msg="/proc must be mounted"
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89 | usage
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90 | fi
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91 |
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92 | if [ -e $RULES ]; then
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93 | msg="The rules file already exists"
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94 | usage
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95 | fi
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96 |
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97 | # Ignore Xen virtual interfaces
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98 | if [ -e /proc/xen ]; then
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99 | msg="The rules file should not be created in the Xen environment"
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100 | usage
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101 | fi
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102 |
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103 | # Variables used to communicate with write_net_rules:
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104 | # INTERFACE simple interface name
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105 | # MATCHADDR MAC address used for the match
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106 | # MATCHID bus_id used for the match
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107 | # MATCHDRV driver name used for the match
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108 | # MATCHIFTYPE interface type match
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109 | # COMMENT comment to add to the generated rule
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110 | # INTERFACE_NAME requested name supplied by external tool
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111 | # INTERFACE_NEW new interface name returned by rule writer
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112 |
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113 | for NIC in $DEVICES; do
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114 | IF=${NIC##*/}
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115 | if echo $NIC | grep -q '*' ; then continue; fi
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116 |
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117 | export INTERFACE=${NIC##*/} # Simple interface name
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118 | export MATCHADDR="$(cat $NIC/address)" # Read MAC address
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119 |
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120 | VENDOR=$(echo $MATCHADDR | cut -c-9)
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121 | if ignore_if; then continue; fi
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122 |
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123 | export MATCHDEVID="$(cat $NIC/dev_id)"
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124 | export MATCHIFTYPE="$(cat $NIC/type)" # Read interface type
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125 | comment
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126 |
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127 | /lib/udev/write_net_rules
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128 | done
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129 |
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