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# Copyright (c) 2004-2006 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# Contributed by Roy Marples (uberlord@gentoo.org)
# Fix any potential localisation problems
# Note that LC_ALL trumps LC_anything_else according to locale(7)
ip() {
LC_ALL=C /sbin/ip "$@"
}
iproute2_tunnel() {
LC_ALL=C /sbin/ip tunnel "$@"
}
# void iproute2_depend(void)
#
# Sets up the dependancies for the module
iproute2_depend() {
provide interface
functions interface_device
}
# void iproute2_expose(void)
#
# Expose variables that can be configured
iproute2_expose() {
variables config routes fallback metric ipaddr ipaddr_fallback iproute inet6
}
# bool iproute2_check_installed(void)
#
# Returns 1 if iproute2 is installed, otherwise 0
iproute2_check_installed() {
[[ -x /sbin/ip ]] && return 0
${1:-false} && eerror "For iproute2 support, emerge sys-apps/iproute2"
return 1
}
# bool iproute2_exists(char *interface, bool report)
#
# Returns 1 if the interface exists, otherwise 0
iproute2_exists() {
local e=$(ip addr show label "$1") report="${2:-false}"
[[ -n ${e} ]] && return 0
if ${report} ; then
eerror "network interface $1 does not exist"
eerror "Please verify hardware or kernel module (driver)"
fi
return 1
}
# void iproute2_up(char *interface)
#
# provides a generic interface for bringing interfaces up
iproute2_up() {
ip link set up dev "$1"
}
# void iproute2_down(char *interface)
#
# provides a generic interface for bringing interfaces up
iproute2_down() {
ip link set down dev "$1"
}
# bool ifproute2_is_up(char *iface, bool withaddress)
#
# Returns 0 if the interface is up, otherwise 1
# If withaddress is true then the interface has to have an IPv4 address
# assigned as well
iproute2_is_up() {
local check="\<UP\>" addr="${2:-false}"
${addr} && check="${check}.*inet "
ip addr show "$1" | tr '\n' ' ' | grep -Eq "${check}"
}
# void iproute2_set_flag(char *iface, char *flag, bool enabled)
#
# Sets or disables the interface flag
iproute2_set_flag() {
local enable="$3" opt="on"
${enable} || opt="off"
ip link set "$1" "$2" "${opt}"
}
# void iproute2_get_address(char *interface)
#
# Fetch the address retrieved by DHCP. If successful, echoes the
# address on stdout, otherwise echoes nothing.
iproute2_get_address() {
ip -family inet addr show "$1" | sed -n -e 's/.*inet \([^ ]*\).*/\1/p'
}
# bool iproute2_is_ethernet(char *interface)
#
# Return 0 if the link is ethernet, otherwise 1.
iproute2_is_ethernet() {
ip link show "$1" | grep -q "^[[:space:]]*link/ether[[:space:]]*"
}
# void iproute2_get_mac_address(char *interface)
#
# Fetch the mac address assingned to the network card
iproute2_get_mac_address() {
local mac=$( ip link show "$1" | sed -n -e \
'/link\// s/^.*\<\(..:..:..:..:..:..\)\>.*/\U\1/p' )
[[ ${mac} != '00:00:00:00:00:00' \
&& ${mac} != '44:44:44:44:44:44' \
&& ${mac} != 'FF:FF:FF:FF:FF:FF' ]] \
&& echo "${mac}"
}
# void iproute2_set_mac_address(char *interface, char *mac)
#
# Assigned the mac address to the network card
iproute2_set_mac_address() {
ip link set address "$2" dev "$1"
}
# int iproute2_set_name(char *interface, char *new_name)
#
# Renames the interface
# This will not work if the interface is setup!
iproute2_set_name() {
ip link set name "$2" dev "$1"
}
# void iproute2_get_aliases_rev(char *interface)
#
# Fetch the list of aliases for an interface.
# Outputs a space-separated list on stdout, in reverse order, for
# example "eth0:2 eth0:1"
iproute2_get_aliases_rev() {
local iface=$( interface_device "$1" )
ip addr show dev "${iface}" | grep -Eo "${iface}:[^ ]+" | tac
}
# bool iproute2_del_addresses(char *interface, bool onlyinet)
#
# Remove addresses from interface.
# If onlyinet is true, then we only remove IPv4 / inet addresses.
iproute2_del_addresses() {
local pre=
${2:-false} && pre="-f inet"
ip ${pre} addr flush label "$1" scope global &>/dev/null
ip ${pre} addr flush label "$1" scope site &>/dev/null
ip ${pre} addr flush label "$1" scope host &>/dev/null
return 0
}
# bool iproute2_get_old_config(char *iface)
#
# Returns config and config_fallback for the given interface
iproute2_get_old_config() {
local ifvar=$( bash_variable "$1" ) inet6= t=
# iproute2-style config vars
t="ipaddr_${ifvar}[@]"
config=( "${!t}" )
t="config_fallback_${ifvar}[@]"
config_fallback=( "${!t}" )
t="inet6_${ifvar}[@]"
inet6=( "${!t}" )
# BACKWARD COMPATIBILITY: check for space-separated inet6 addresses
[[ ${#inet6[@]} == "1" && ${inet6} == *" "* ]] && inet6=( ${inet6} )
# Add inet6 addresses to our config if required
[[ -n ${inet6} ]] && config=( "${config[@]}" "${inet6[@]}" )
# Support old style iface_xxx syntax
if [[ -z ${config} ]] ; then
if is_function ifconfig_get_old_config ; then
ifconfig_get_old_config "${iface}"
fi
fi
return 0
}
# bool iproute2_iface_stop(char *interface)
#
# Do final shutdown for an interface or alias.
#
# Returns 0 (true) when successful, non-zero (false) on failure
iproute2_iface_stop() {
local label="$1" iface=$( interface_device "$1" )
# Shut down the link if this isn't an alias or vlan
if [[ ${label} == "${iface}" ]] ; then
iproute2_down "${iface}"
return $?
fi
return 0
}
# bool iproute2_add_address(char *interface, char *options ...)
#
# Adds an the specified address to the interface
# returns 0 on success and non-zero on failure
iproute2_add_address() {
local iface="$1" x=
iproute2_exists "${iface}" true || return 1
# Extract the config
local -a config=( "$@" )
config=( ${config[@]:1} )
# Convert an ifconfig line to iproute2
local n="${#config[@]}"
for (( x=0; x<n; x++ )); do
case "${config[x]}" in
netmask)
config[0]="${config[0]}/$( netmask2cidr "${config[x+1]}" )"
unset config[x] config[x+1]
;;
mtu)
ip link set mtu "${config[x+1]}" dev "${iface}"
unset config[x] config[x+1]
;;
esac
done
config=( "${config[@]//pointopoint/peer}" )
# Always scope lo addresses as host unless specified otherwise
if [[ " ${config[@]} " != *" scope "* ]] ; then
is_loopback "${iface}" && config=( "${config[@]}" "scope host" )
fi
# IPv4 specifics
if [[ ${config[@]} == *.*.*.* ]] ; then
# Work out a broadcast if none supplied
[[ ${config[@]} != *" brd "* && ${config[@]} != *" broadcast "* ]] \
&& config=( "${config[@]}" "brd +" )
fi
# Ensure that the interface is up so we can add IPv6 addresses
interface_up "${iface}"
# Some kernels like to apply lo with an address when they are brought up
if [[ ${config[@]} == "127.0.0.1/8 brd 127.255.255.255 scope host" ]] ; then
is_loopback "${iface}" && ip addr del dev "${iface}" 127.0.0.1/8 2>/dev/null
fi
ip addr add dev "${iface}" ${config[@]}
}
# bool iproute2_pre_start(char *interface)
#
# Runs any pre_start stuff on our interface - just the MTU atm
# We set MTU twice as it may be needed for DHCP - a dhcp client could
# change it in error, so we set MTU in post start too
iproute2_pre_start() {
local iface="$1"
interface_exists "${iface}" || return 0
local ifvar=$( bash_variable "$1" )
# MTU support
local mtu="mtu_${ifvar}"
[[ -n ${!mtu} ]] && ip link set mtu "${!mtu}" dev "${iface}"
return 0
}
# bool iproute2_post_start(char *interface)
#
# Runs any post_start stuff on our interface and adds routes
# Always returns 0
iproute2_post_start() {
local iface="$1" ifvar=$( bash_variable "$1" ) x=
iproute2_exists "${iface}" || return 0
# Make sure interface is marked UP
iproute2_up "${iface}"
# MTU support
local mtu="mtu_${ifvar}"
[[ -n ${!mtu} ]] && ip link set mtu "${!mtu}" dev "${iface}"
local x="routes_${ifvar}[@]"
local -a routes=( "${!x}" )
local metric="metric_${ifvar}"
# Test for old style ipaddr variable
if [[ -z ${routes} ]] ; then
t="iproute_${ifvar}[@]"
routes=( "${!t}" )
fi
# Set routes with ip route -- this might also include default route
if [[ -n ${routes} ]] ; then
einfo "Adding routes"
eindent
for x in "${routes[@]}"; do
ebegin "${x}"
# Support net-tools routing too
x="${x//gw/via}"
x="${x//-A inet6/}"
x="${x//-net/}"
[[ " ${x} " == *" -host "* ]] && x="${x//-host/} scope host"
# Attempt to support net-tools route netmask option
netmask="${x##* netmask }"
if [[ -n ${netmask} && ${x} != "${netmask}" ]] ; then
netmask="${netmask%% *}"
x="${x// netmask ${netmask} / }"
local -a a=( ${x} )
a[0]="${a[0]}/$( netmask2cidr "${netmask}")"
x="${a[@]}"
fi
# Add a metric if we don't have one
[[ " ${x} " != *" metric "* ]] && x="${x} metric ${!metric}"
ip route append ${x} dev "${iface}"
eend $?
done
eoutdent
fi
# Flush the route cache
ip route flush cache dev "${iface}"
return 0
}
# void iproute2_post_stop(char* interface)
iproute2_post_stop() {
local iface="$1" rule=
iproute2_exists "${iface}" || return
# Flush the route cache
ip route flush cache dev "${iface}"
}
# vim: set ts=4 :
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