Magellan Linux

  • Back to homepage
    • /[pkg-src]/trunk/dracut/dhcpcd-script.sh

    Annotation of /trunk/dracut/dhcpcd-script.sh

    Parent Directory Parent Directory | Revision Log Revision Log

    Revision 3217 - (hide annotations) (download) (as text)
    Thu Aug 23 12:12:40 2018 UTC (5 years, 8 months ago) by niro
    File MIME type: application/x-sh
    File size: 9260 byte(s) 
    -added network scripts
    1 niro 3217 #!/bin/sh
    2    
    3     PATH=/usr/sbin:/usr/bin:/sbin:/bin
    4    
    5     type getarg >/dev/null 2>&1 || . /lib/dracut-lib.sh
    6     type ip_to_var >/dev/null 2>&1 || . /lib/net-lib.sh
    7    
    8     # We already need a set netif here
    9     netif=$interface
    10    
    11     setup_interface() {
    12     ip=$new_ip_address
    13     mtu=$new_interface_mtu
    14     mask=$new_subnet_mask
    15     bcast=$new_broadcast_address
    16     gw=${new_routers%%,*}
    17     domain=$new_domain_name
    18     search=$(printf -- "$new_domain_search")
    19     namesrv=$new_domain_name_servers
    20     hostname=$new_host_name
    21     [ -n "$new_dhcp_lease_time" ] && lease_time=$new_dhcp_lease_time
    22     [ -n "$new_max_life" ] && lease_time=$new_max_life
    23     preferred_lft=$lease_time
    24     [ -n "$new_preferred_life" ] && preferred_lft=$new_preferred_life
    25    
    26     [ -f /tmp/net.$netif.override ] && . /tmp/net.$netif.override
    27    
    28     # Taken from debian dhclient-script:
    29     # The 576 MTU is only used for X.25 and dialup connections
    30     # where the admin wants low latency. Such a low MTU can cause
    31     # problems with UDP traffic, among other things. As such,
    32     # disallow MTUs from 576 and below by default, so that broken
    33     # MTUs are ignored, but higher stuff is allowed (1492, 1500, etc).
    34     if [ -n "$mtu" ] && [ $mtu -gt 576 ] ; then
    35     if ! ip link set $netif mtu $mtu ; then
    36     ip link set $netif down
    37     ip link set $netif mtu $mtu
    38     linkup $netif
    39     fi
    40     fi
    41    
    42     ip addr add $ip${mask:+/$mask} ${bcast:+broadcast $bcast} dev $netif \
    43     ${lease_time:+valid_lft $lease_time} \
    44     ${preferred_lft:+preferred_lft ${preferred_lft}}
    45    
    46     if [ -n "$gw" ] ; then
    47     if [ "$mask" = "255.255.255.255" ] ; then
    48     # point-to-point connection => set explicit route to gateway
    49     echo ip route add $gw dev $netif > /tmp/net.$netif.gw
    50     fi
    51    
    52     echo "$gw" | {
    53     IFS=' ' read -r main_gw other_gw
    54     echo ip route replace default via $main_gw dev $netif >> /tmp/net.$netif.gw
    55     if [ -n "$other_gw" ] ; then
    56     for g in $other_gw; do
    57     echo ip route add default via $g dev $netif >> /tmp/net.$netif.gw
    58     done
    59     fi
    60     }
    61     fi
    62    
    63     if getargbool 1 rd.peerdns; then
    64     [ -n "${search}${domain}" ] && echo "search $search $domain" > /tmp/net.$netif.resolv.conf
    65     if [ -n "$namesrv" ] ; then
    66     for s in $namesrv; do
    67     echo nameserver $s
    68     done
    69     fi >> /tmp/net.$netif.resolv.conf
    70     fi
    71     # Note: hostname can be fqdn OR short hostname, so chop off any
    72     # trailing domain name and explicity add any domain if set.
    73     [ -n "$hostname" ] && echo "echo ${hostname%.$domain}${domain:+.$domain} > /proc/sys/kernel/hostname" > /tmp/net.$netif.hostname
    74     }
    75    
    76     setup_interface6() {
    77     domain=$new_domain_name
    78     search=$(printf -- "$new_domain_search")
    79     namesrv=$new_domain_name_servers
    80     hostname=$new_host_name
    81     [ -n "$new_dhcp_lease_time" ] && lease_time=$new_dhcp_lease_time
    82     [ -n "$new_max_life" ] && lease_time=$new_max_life
    83     preferred_lft=$lease_time
    84     [ -n "$new_preferred_life" ] && preferred_lft=$new_preferred_life
    85    
    86     [ -f /tmp/net.$netif.override ] && . /tmp/net.$netif.override
    87    
    88     ip -6 addr add ${new_ip6_address}/${new_ip6_prefixlen} \
    89     dev ${netif} scope global \
    90     ${lease_time:+valid_lft $lease_time} \
    91     ${preferred_lft:+preferred_lft ${preferred_lft}}
    92    
    93     if getargbool 1 rd.peerdns; then
    94     [ -n "${search}${domain}" ] && echo "search $search $domain" > /tmp/net.$netif.resolv.conf
    95     if [ -n "$namesrv" ] ; then
    96     for s in $namesrv; do
    97     echo nameserver $s
    98     done
    99     fi >> /tmp/net.$netif.resolv.conf
    100     fi
    101    
    102     # Note: hostname can be fqdn OR short hostname, so chop off any
    103     # trailing domain name and explicity add any domain if set.
    104     [ -n "$hostname" ] && echo "echo ${hostname%.$domain}${domain:+.$domain} > /proc/sys/kernel/hostname" > /tmp/net.$netif.hostname
    105     }
    106    
    107     parse_option_121() {
    108     while [ $# -ne 0 ]; do
    109     mask="$1"
    110     shift
    111    
    112     # Is the destination a multicast group?
    113     if [ $1 -ge 224 -a $1 -lt 240 ]; then
    114     multicast=1
    115     else
    116     multicast=0
    117     fi
    118    
    119     # Parse the arguments into a CIDR net/mask string
    120     if [ $mask -gt 24 ]; then
    121     destination="$1.$2.$3.$4/$mask"
    122     shift; shift; shift; shift
    123     elif [ $mask -gt 16 ]; then
    124     destination="$1.$2.$3.0/$mask"
    125     shift; shift; shift
    126     elif [ $mask -gt 8 ]; then
    127     destination="$1.$2.0.0/$mask"
    128     shift; shift
    129     else
    130     destination="$1.0.0.0/$mask"
    131     shift
    132     fi
    133    
    134     # Read the gateway
    135     gateway="$1.$2.$3.$4"
    136     shift; shift; shift; shift
    137    
    138     # Multicast routing on Linux
    139     # - If you set a next-hop address for a multicast group, this breaks with Cisco switches
    140     # - If you simply leave it link-local and attach it to an interface, it works fine.
    141     if [ $multicast -eq 1 ]; then
    142     temp_result="$destination dev $interface"
    143     else
    144     temp_result="$destination via $gateway dev $interface"
    145     fi
    146    
    147     echo "/sbin/ip route add $temp_result"
    148     done
    149     }
    150    
    151    
    152     case $reason in
    153     PREINIT)
    154     echo "dhcp: PREINIT $netif up"
    155     linkup $netif
    156     ;;
    157    
    158     PREINIT6)
    159     echo "dhcp: PREINIT6 $netif up"
    160     linkup $netif
    161     wait_for_ipv6_dad_link $netif
    162     ;;
    163    
    164     BOUND)
    165     echo "dhcp: BOND setting $netif"
    166     unset layer2
    167     if [ -f /sys/class/net/$netif/device/layer2 ]; then
    168     read layer2 < /sys/class/net/$netif/device/layer2
    169     fi
    170     if [ "$layer2" != "0" ]; then
    171     if command -v arping2 >/dev/null; then
    172     if arping2 -q -C 1 -c 2 -I $netif -0 $new_ip_address ; then
    173     warn "Duplicate address detected for $new_ip_address while doing dhcp. retrying"
    174     exit 1
    175     fi
    176     else
    177     if ! arping -f -q -D -c 2 -I $netif $new_ip_address ; then
    178     warn "Duplicate address detected for $new_ip_address while doing dhcp. retrying"
    179     exit 1
    180     fi
    181     fi
    182     fi
    183     unset layer2
    184     setup_interface
    185     set | while read line || [ -n "$line" ]; do
    186     [ "${line#new_}" = "$line" ] && continue
    187     echo "$line"
    188     done >/tmp/dhcpcd.$netif.dhcpopts
    189    
    190     {
    191     echo '. /lib/net-lib.sh'
    192     echo "setup_net $netif"
    193     if [ -n "$new_classless_static_routes" ]; then
    194     OLDIFS="$IFS"
    195     IFS=".$IFS"
    196     parse_option_121 $new_classless_static_routes
    197     IFS="$OLDIFS"
    198     fi
    199     echo "source_hook initqueue/online $netif"
    200     [ -e /tmp/net.$netif.manualup ] || echo "/sbin/netroot $netif"
    201     echo "rm -f -- $hookdir/initqueue/setup_net_$netif.sh"
    202     } > $hookdir/initqueue/setup_net_$netif.sh
    203    
    204     echo "[ -f /tmp/net.$netif.did-setup ]" > $hookdir/initqueue/finished/dhcpcd-$netif.sh
    205     >/tmp/net.$netif.up
    206     if [ -e /sys/class/net/${netif}/address ]; then
    207     > /tmp/net.$(cat /sys/class/net/${netif}/address).up
    208     fi
    209    
    210     ;;
    211    
    212     RENEW|REBIND)
    213     unset lease_time
    214     [ -n "$new_dhcp_lease_time" ] && lease_time=$new_dhcp_lease_time
    215     [ -n "$new_max_life" ] && lease_time=$new_max_life
    216     preferred_lft=$lease_time
    217     [ -n "$new_preferred_life" ] && preferred_lft=$new_preferred_life
    218     ip -4 addr change ${new_ip_address}/${new_subnet_mask} broadcast ${new_broadcast_address} dev ${interface} \
    219     ${lease_time:+valid_lft $lease_time} ${preferred_lft:+preferred_lft ${preferred_lft}} \
    220     >/dev/null 2>&1
    221     ;;
    222    
    223     BOUND6)
    224     echo "dhcp: BOND6 setting $netif"
    225     setup_interface6
    226    
    227     set | while read line || [ -n "$line" ]; do
    228     [ "${line#new_}" = "$line" ] && continue
    229     echo "$line"
    230     done >/tmp/dhcpcd.$netif.dhcpopts
    231    
    232     {
    233     echo '. /lib/net-lib.sh'
    234     echo "setup_net $netif"
    235     echo "source_hook initqueue/online $netif"
    236     [ -e /tmp/net.$netif.manualup ] || echo "/sbin/netroot $netif"
    237     echo "rm -f -- $hookdir/initqueue/setup_net_$netif.sh"
    238     } > $hookdir/initqueue/setup_net_$netif.sh
    239    
    240     echo "[ -f /tmp/net.$netif.did-setup ]" > $hookdir/initqueue/finished/dhcpcd-$netif.sh
    241     >/tmp/net.$netif.up
    242     if [ -e /sys/class/net/${netif}/address ]; then
    243     > /tmp/net.$(cat /sys/class/net/${netif}/address).up
    244     fi
    245     ;;
    246    
    247     RENEW6|REBIND6)
    248     unset lease_time
    249     [ -n "$new_dhcp_lease_time" ] && lease_time=$new_dhcp_lease_time
    250     [ -n "$new_max_life" ] && lease_time=$new_max_life
    251     preferred_lft=$lease_time
    252     [ -n "$new_preferred_life" ] && preferred_lft=$new_preferred_life
    253     ip -6 addr change ${new_ip6_address}/${new_ip6_prefixlen} dev ${interface} scope global \
    254     ${lease_time:+valid_lft $lease_time} ${preferred_lft:+preferred_lft ${preferred_lft}} \
    255     >/dev/null 2>&1
    256     ;;
    257    
    258     *) echo "dhcp: $reason";;
    259     esac
    260    
    261     exit 0