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#!/sbin/runscript
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# net-scripts main code
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# Version 1.0.5
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# Copyright (c) 2004 Gentoo Foundation
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# Distributed under the terms of the GNU General Public License V2
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# Contributed by Roy Marples (uberlord@gentoo.org)
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# Many thanks to Aron Griffis (agriffis@gentoo.org)
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# for help, ideas and patches
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#NB: Config is in /etc/conf.d/net
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if [[ -n ${NET_DEBUG} ]]; then
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set -x
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devnull=/dev/stderr
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else
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devnull=/dev/null
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fi
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# For pcmcia users. note that pcmcia must be added to the same
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# runlevel as the net.* script that needs it.
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depend() {
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use coldplug hotplug pcmcia usb isdn4linux wlan
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}
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# Define where our modules are
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MODULES_DIR=/lib/rcscripts/net.modules.d
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# Load some functions shared between ourselves and our dhcp helpers
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source ${MODULES_DIR}/helpers.d/functions
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# Make some wrappers to fudge after/before/need/use depend flags.
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# These are callbacks so mods[i] will be set.
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after() {
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local x="$*"
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[[ $# -gt 1 ]] && x=$( echo -e "${x// /\n}" | sort | xargs )
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eval "${MODULE}_after() { echo \"$x\"; }"
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}
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before() {
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local x="$*"
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[[ $# -gt 1 ]] && x=$( echo -e "${x// /\n}" | sort | xargs )
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eval "${MODULE}_before() { echo \"$x\"; }"
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}
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need() {
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local x="$*"
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[[ $# -gt 1 ]] && x=$( echo -e "${x// /\n}" | sort | xargs )
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eval "${MODULE}_need() { echo \"$x\"; }"
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}
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installed() {
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local x="$*"
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[[ $# -gt 1 ]] && x=$( echo -e "${x// /\n}" | sort | xargs )
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# We deliberately misspell this as _installed will probably be used
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# at some point
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eval "${MODULE}_instlled() { echo \"$x\"; }"
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}
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sort() {
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LC_ALL=C /bin/sort "$@"
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}
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# bool net_start(char *iface)
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#
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# Starts a net.${iface} if required
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# This is used by bridge and bond modules as the interfaces
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# they need may have to be created
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net_start() {
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local iface=${1}
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interface_exists ${iface} && return 0
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[[ -f ${svcdir}/started/net.${iface} ]] && return 0
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if [[ ! -x /etc/init.d/net.${iface} ]]; then
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eerror "/etc/init.d/net.${iface} does not exist"
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eerror "Cannot start ${iface}"
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return 1
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fi
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/etc/init.d/net.${iface} start
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return $?
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}
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# void module_class_wrap(char *module, char *provides)
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# Setup class wrappers: interface_up -> iproute2_up, for example
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module_class_wrap() {
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local module=${1} provides=${2} x
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# Don't wrap functions if another module already has
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[[ $( type -t ${provides}_provides ) == function ]] && return
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for x in $( typeset -f | grep -o ^${module}_'[^ ]*' ); do
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eval "${provides}${x#${module}}() { ${x} \"\$@\"; }"
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done
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}
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# bool module_load_minimum(char *module)
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#
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# Does the minimum checking on a module - even when forcing
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module_load_minimum() {
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local f=${1} MODULE=${1##*/}
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if [[ ! -f ${f} ]]; then
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eerror "${f} does not exist"
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return 1
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fi
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if ! source ${f} ; then
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eerror "${MODULE} failed a sanity check"
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return 1
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fi
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for f in check_installed provides check_depends depend; do
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[[ $( type -t ${MODULE}_${f} ) == function ]] && continue
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eerror "${MODULE} does not support the required function ${f}"
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return 1
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done
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# Wrap our before/after/need/use functions
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${MODULE}_depend
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return 0
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}
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# bool modules_load_auto()
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#
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# Load and check each module for sanity
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# If the module is not installed, the functions are to be removed
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modules_load_auto() {
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local e f i j beforefuncs afterfuncs diffs unload
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# Populate the MODULES array
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MODULES=( $( find ${MODULES_DIR}/ -maxdepth 1 -type f | sort ) )
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# Each of these sources into the global namespace, so it's
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# important that module functions and variables are prefixed with
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# the module name, for example iproute2_
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beforefuncs="$( typeset -F )"
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j=${#MODULES[@]}
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loaded_interface=false
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for (( i=0; i<j; i++ )); do
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unload=false
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module_load_minimum ${MODULES[i]} || unload=true
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MODULES[i]=${MODULES[i]##*/}
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! ${unload} && ${MODULES[i]}_check_installed false || unload=true
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if [[ ${MODULES[i]} == interface ]]; then
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eerror "interface is a reserved name - cannot load a module called interface"
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return 1
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fi
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afterfuncs="$( typeset -F )"
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if ${unload} ; then
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unset MODULES[i]
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unsetfuncs="${unsetfuncs} $( diff -U0 <( echo "${beforefuncs}" ) <( echo "${afterfuncs}" ) 2>/dev/null \
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| awk 'BEGIN { ORS = " "; } /+declare -f/ { print $3; }' )"
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fi
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beforefuncs="${afterfuncs}"
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done
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MODULES=( "${MODULES[@]}" )
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return 0
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}
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# bool modules_check_installed(void)
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#
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# Ensure that all modules have the required modules loaded
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# This enables us to remove modules from the MODULES array
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# Whilst other modules can still explicitly call them
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# One example of this is essidnet which configures network
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# settings for the specific ESSID connected to as the user
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# may be using a daemon to configure wireless instead of our
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# iwconfig module
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modules_check_installed() {
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local i j missingdeps nmods=${#MODULES[@]}
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for (( i=0; i<nmods; i++ )); do
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[[ $( type -t ${MODULES[i]}_instlled ) != function ]] && continue
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for j in $( ${MODULES[i]}_instlled ); do
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missingdeps=true
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if [[ $( type -t ${j}_check_installed ) == function ]]; then
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${j}_check_installed && missingdeps=false
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fi
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${missingdeps} && unset MODULES[i] && unset PROVIDES[i] && break
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done
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done
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MODULES=( "${MODULES[@]}" )
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PROVIDES=( "${PROVIDES[@]}" )
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}
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# bool modules_check_user(void)
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modules_check_user() {
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local -a umods
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local i j k l npref nmods=${#MODULES[@]}
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# Has the interface got any specific modules?
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eval umods=( \"\$\{modules_${iface}\[@\]\}\" )
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# Global setting follows interface-specific setting
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umods=( "${umods[@]}" "${modules[@]}" )
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# Add our preferred modules
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npref=3
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umods=( "${umods[@]}" "ifconfig" "dhcpcd" "iwconfig" )
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# First we strip any modules that conflict from user settings
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# So if the user specifies pump then we don't use dhcpcd
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for (( i=0; i<${#umods[@]}; i++ )); do
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# Some users will inevitably put "dhcp" in their modules
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# list. To keep users from screwing up their system this
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# way, ignore this setting so that the default dhcp
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# module will be used.
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[[ ${umods[i]} == dhcp ]] && continue
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# We remove any modules we explicitly don't want
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if [[ ${umods[i]} == !* ]]; then
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for (( j=0; j<nmods; j++ )); do
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[[ -z ${MODULES[j]} ]] && continue
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if [[ ${umods[i]:1} == ${MODULES[j]} || ${umods[i]:1} == ${PROVIDES[j]} ]]; then
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# We may need to setup a class wrapper for it even though
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# we don't use it directly
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${MODULES[j]}_check_installed && module_class_wrap ${MODULES[j]}
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unset MODULES[j]
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unset PROVIDES[j]
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break
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fi
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done
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continue
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fi
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if [[ $( type -t ${umods[i]}_provides ) != function ]]; then
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# If the module is one of our preferred modules, then
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# ignore this error; whatever is available will be
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# used instead.
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(( i < ${#umods[@]} - npref )) || continue
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eerror "${umods[i]} is not a valid module (missing provides)"
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return 1
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fi
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# Ensure that the user specified module has its package installed
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if (( i < ${#umods[@]} - npref )); then
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# $1==true causes check_installed to report its own errors
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${umods[i]}_check_installed true || return 1
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else
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# If this happens on a preferred modules, ignore it;
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# whatever is available will be used instead.
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${umods[i]}_check_installed false || continue
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fi
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mod=$( ${umods[i]}_provides )
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for (( j=0; j<nmods; j++ )); do
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[[ -z ${MODULES[j]} ]] && continue
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if [[ ${PROVIDES[j]} == ${mod} && ${umods[i]} != ${MODULES[j]} ]]; then
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# We don't have a match - now ensure that we still provide an alternative.
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# This is to handle our preferred modules.
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for (( l=0; l<nmods; l++ )); do
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[[ ${l} -eq ${j} || -z ${MODULES[l]} ]] && continue
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if [[ ${PROVIDES[l]} == ${mod} ]]; then
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unset MODULES[j]
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unset PROVIDES[j]
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break
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fi
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done
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fi
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done
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done
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# Then we strip conflicting modules.
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# We only need to do this for 3rd party modules that conflict with
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# our own modules and the preferred list AND the user modules
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# list doesn't specify a preference.
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for (( i=0; i<nmods-1; i++ )); do
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[[ -z ${MODULES[i]} ]] && continue
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| 275 |
for (( j=i+1; j<nmods; j++)); do
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[[ -z ${MODULES[j]} ]] && continue
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| 277 |
[[ ${PROVIDES[i]} == ${PROVIDES[j]} ]] && unset MODULES[j] && unset PROVIDES[j]
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done
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done
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MODULES=( "${MODULES[@]}" )
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PROVIDES=( "${PROVIDES[@]}" )
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return 0
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}
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# void modules_sort(void)
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| 288 |
modules_sort() {
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local -a modnums sort_history modafter modbefore
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local i j k p changed_something nmods=${#MODULES[@]}
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# Sort our modules
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# We do this by assigning numbers to each module
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# We also assign modbefore and modafter so we don't
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# shell out as much because it's expensive on CPU.
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| 296 |
modnums=()
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| 297 |
for (( i=0; i<nmods; i++ )); do
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| 298 |
modnums[i]=${i}
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| 299 |
[[ $( type -t ${MODULES[i]}_after ) == function ]] && modafter[i]=$( ${MODULES[i]}_after )
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| 300 |
[[ $( type -t ${MODULES[i]}_before ) == function ]] && modbefore[i]=$( ${MODULES[i]}_before )
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| 301 |
done
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| 302 |
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| 303 |
# Then we swap numbers based on and after/before flags
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| 304 |
# until we don't swap anymore. The sort_history array prevents
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| 305 |
# the possibility of an infinite loop
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| 306 |
sort_history[0]="${modnums[*]}"
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| 307 |
for (( k=1; 1; k++ )); do
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| 308 |
changed_something=false
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| 309 |
for (( i=0; i<nmods; i++ )); do
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| 310 |
for p in ${modafter[i]}; do
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| 311 |
for (( j=0; j<nmods; j++ )); do
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| 312 |
[[ ${p} != ${MODULES[j]} && ${p} != ${PROVIDES[j]} ]] && continue
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| 313 |
if [[ ${modnums[i]} -lt ${modnums[j]} ]]; then
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| 314 |
tmp=${modnums[i]}
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| 315 |
modnums[i]=${modnums[j]}
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| 316 |
modnums[j]=${tmp}
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| 317 |
changed_something=true
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| 318 |
fi
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| 319 |
done
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| 320 |
done
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| 321 |
for p in ${modbefore[i]}; do
|
| 322 |
for (( j=0; j<nmods; j++ )); do
|
| 323 |
[[ ${p} != ${MODULES[j]} && ${p} != ${PROVIDES[j]} ]] && continue
|
| 324 |
if [[ ${modnums[i]} -gt ${modnums[j]} ]]; then
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| 325 |
tmp=${modnums[i]}
|
| 326 |
modnums[i]=${modnums[j]}
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| 327 |
modnums[j]=${tmp}
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| 328 |
changed_something=true
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| 329 |
fi
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| 330 |
done
|
| 331 |
done
|
| 332 |
done
|
| 333 |
${changed_something} || break
|
| 334 |
|
| 335 |
# Make sure we aren't repeating a previous state
|
| 336 |
# First time through, k=1, k/2=0
|
| 337 |
sort_history[k]="${modnums[*]}"
|
| 338 |
if [[ ${sort_history[k]} == ${sort_history[k/2]} ]]; then
|
| 339 |
eerror "Detected an infinite loop sorting modules; blundering ahead"
|
| 340 |
break
|
| 341 |
fi
|
| 342 |
done
|
| 343 |
|
| 344 |
# Finally we sort our modules in number order
|
| 345 |
um=""
|
| 346 |
for (( i=0; i<nmods; i++ )); do
|
| 347 |
um="${um}${modnums[i]} ${MODULES[i]} ${PROVIDES[i]}\n"
|
| 348 |
done
|
| 349 |
|
| 350 |
p=( $( echo -e "${um}" | sort -n | awk '{print $2,$3}' ) )
|
| 351 |
MODULES=()
|
| 352 |
PROVIDES=()
|
| 353 |
j=0
|
| 354 |
for (( i=0; i<${#p[@]}; i+=2 )); do
|
| 355 |
MODULES[j]=${p[i]}
|
| 356 |
PROVIDES[j]=${p[i+1]}
|
| 357 |
(( j++ ))
|
| 358 |
done
|
| 359 |
}
|
| 360 |
|
| 361 |
# bool modules_check_depends(bool showprovides)
|
| 362 |
modules_check_depends() {
|
| 363 |
local showprovides=${1:-false} nmods=${#MODULES[@]} i j needmod
|
| 364 |
local missingdeps p interface=false
|
| 365 |
|
| 366 |
for (( i=0; i<nmods; i++ )); do
|
| 367 |
if [[ $( type -t ${MODULES[i]}_need ) == function ]]; then
|
| 368 |
for needmod in $( ${MODULES[i]}_need ); do
|
| 369 |
missingdeps=true
|
| 370 |
for (( j=0; j<nmods; j++ )); do
|
| 371 |
if [[ ${needmod} == ${MODULES[j]} || ${needmod} == ${PROVIDES[j]} ]]; then
|
| 372 |
missingdeps=false
|
| 373 |
break
|
| 374 |
fi
|
| 375 |
done
|
| 376 |
if ${missingdeps} ; then
|
| 377 |
eerror "${MODULES[i]} needs ${needmod} (dependency failure)"
|
| 378 |
return 1
|
| 379 |
fi
|
| 380 |
done
|
| 381 |
fi
|
| 382 |
|
| 383 |
${MODULES[i]}_check_depends || return 1
|
| 384 |
[[ ${PROVIDES[i]} == interface ]] && interface=true
|
| 385 |
|
| 386 |
if ${showprovides} ; then
|
| 387 |
[[ ${PROVIDES[i]} != ${MODULES[i]} ]] && veinfo "${MODULES[i]} provides ${PROVIDES[i]}"
|
| 388 |
fi
|
| 389 |
done
|
| 390 |
|
| 391 |
if ! ${interface} ; then
|
| 392 |
eerror "no interface module has been loaded"
|
| 393 |
return 1
|
| 394 |
fi
|
| 395 |
|
| 396 |
return 0
|
| 397 |
}
|
| 398 |
|
| 399 |
# bool modules_load(char *iface, bool starting)
|
| 400 |
#
|
| 401 |
# Loads the defined handler and modules for the interface
|
| 402 |
# Returns 0 on success, otherwise 1
|
| 403 |
modules_load() {
|
| 404 |
local iface=${1} starting=${2:-true} mod p=false i j unsetfuncs
|
| 405 |
local -a x
|
| 406 |
local RC_INDENTATION=${RC_INDENTATION} # so it will reset after function
|
| 407 |
local -a PROVIDES
|
| 408 |
|
| 409 |
if [[ ${iface} == lo ]]; then
|
| 410 |
# We force lo to only use these modules for a major speed boost
|
| 411 |
modules_force=( "iproute2" "ifconfig" )
|
| 412 |
else
|
| 413 |
eval x=( \"\$\{modules_force_${iface}\[@\]\}\" )
|
| 414 |
[[ -n ${x} ]] && modules_force=( "${x[@]}" )
|
| 415 |
if [[ -n ${modules_force} ]]; then
|
| 416 |
ewarn "WARNING: You are forcing modules!"
|
| 417 |
ewarn "Do not complain or file bugs if things start breaking"
|
| 418 |
report=true
|
| 419 |
fi
|
| 420 |
veinfo "Loading networking modules for ${iface}"
|
| 421 |
fi
|
| 422 |
eindent
|
| 423 |
|
| 424 |
if [[ -z ${modules_force} ]]; then
|
| 425 |
modules_load_auto || return 1
|
| 426 |
else
|
| 427 |
j=${#modules_force[@]}
|
| 428 |
for (( i=0; i<j; i++ )); do
|
| 429 |
module_load_minimum "${MODULES_DIR}/${modules_force[i]}" || return 1
|
| 430 |
${modules_force[i]}_check_installed || unset modules_force[i]
|
| 431 |
done
|
| 432 |
MODULES=( "${modules_force[@]}" )
|
| 433 |
fi
|
| 434 |
|
| 435 |
# We now buffer the _provides functions for a big speed boost
|
| 436 |
j=${#MODULES[@]}
|
| 437 |
for (( i=0; i<j; i++ )); do
|
| 438 |
PROVIDES[i]=$( ${MODULES[i]}_provides )
|
| 439 |
done
|
| 440 |
|
| 441 |
if [[ -z ${modules_force[@]} ]]; then
|
| 442 |
if ${starting}; then
|
| 443 |
modules_check_user || return 1
|
| 444 |
fi
|
| 445 |
|
| 446 |
# We unset unloaded module functions here as so we can error
|
| 447 |
# with a message informing the user to emerge the correct
|
| 448 |
# package if it's in their modules
|
| 449 |
[[ -n ${unsetfuncs} ]] && unset ${unsetfuncs}
|
| 450 |
|
| 451 |
modules_sort
|
| 452 |
fi
|
| 453 |
|
| 454 |
# Setup class wrappers: interface_up -> iproute2_up, for example
|
| 455 |
j=${#MODULES[@]}
|
| 456 |
for (( i=0; i<j; i++ )); do
|
| 457 |
module_class_wrap ${MODULES[i]} ${PROVIDES[i]}
|
| 458 |
done
|
| 459 |
|
| 460 |
modules_check_installed || return 1
|
| 461 |
|
| 462 |
[[ ${iface} != lo ]] && veinfo "modules: ${MODULES[@]}"
|
| 463 |
eindent
|
| 464 |
|
| 465 |
[[ ${iface} != lo && ${starting} == true ]] && p=true
|
| 466 |
modules_check_depends ${p} || return 1
|
| 467 |
return 0
|
| 468 |
}
|
| 469 |
|
| 470 |
# bool iface_start(char *interface)
|
| 471 |
#
|
| 472 |
# iface_start is called from start. It's expected to start the base
|
| 473 |
# interface (for example "eth0"), aliases (for example "eth0:1") and to start
|
| 474 |
# VLAN interfaces (for example eth0.0, eth0.1). VLAN setup is accomplished by
|
| 475 |
# calling itself recursively.
|
| 476 |
iface_start() {
|
| 477 |
local iface=${1} mod i label config_counter=-1 x conf warn=false inet6
|
| 478 |
local RC_INDENTATION=${RC_INDENTATION} # so it will reset after function
|
| 479 |
local -a config config_fallback
|
| 480 |
local ifvar=$( interface_variable ${iface} )
|
| 481 |
|
| 482 |
# pre Start any modules with
|
| 483 |
for mod in ${MODULES[@]}; do
|
| 484 |
if [[ $( type -t ${mod}_pre_start ) == function ]]; then
|
| 485 |
${mod}_pre_start ${iface} || { eend 1; return 1; }
|
| 486 |
fi
|
| 487 |
done
|
| 488 |
|
| 489 |
# New style config - one variable fits all
|
| 490 |
eval config=( \"\$\{config_${ifvar}\[@\]\}\" )
|
| 491 |
eval config_fallback=( \"\$\{fallback_${ifvar}\[@\]\}\" )
|
| 492 |
|
| 493 |
# We must support old configs
|
| 494 |
if [[ -z ${config} ]]; then
|
| 495 |
interface_get_old_config ${iface} || return 1
|
| 496 |
fi
|
| 497 |
|
| 498 |
# Provide a default of DHCP if no configuration is set
|
| 499 |
if [[ -z ${config} ]]; then
|
| 500 |
if [[ $( type -t dhcp_start ) == function ]]; then
|
| 501 |
config=( "dhcp" )
|
| 502 |
warn=true
|
| 503 |
else
|
| 504 |
eerror "Cannot default to dhcp as there is no dhcp module loaded"
|
| 505 |
eerror "No configuration for ${iface}"
|
| 506 |
return 1
|
| 507 |
fi
|
| 508 |
fi
|
| 509 |
|
| 510 |
einfo "Bringing up ${iface}"
|
| 511 |
eindent
|
| 512 |
for (( config_counter=0; config_counter<${#config[@]}; config_counter++ )); do
|
| 513 |
# Null inet address
|
| 514 |
# We do this so we can have an inet6 only setup
|
| 515 |
[[ ${config[config_counter]} == "null" ]] && eend 0 && continue
|
| 516 |
|
| 517 |
${warn} && ewarn "Configuration not set for ${iface} - assuming dhcp"
|
| 518 |
warn=false
|
| 519 |
|
| 520 |
# We convert it to an array - this has the added
|
| 521 |
# bonus of trimming spaces!
|
| 522 |
conf=( ${config[config_counter]} )
|
| 523 |
einfo "${conf[0]}"
|
| 524 |
|
| 525 |
# Do we have a function for our config?
|
| 526 |
if [[ $( type -t ${conf[0]}_start ) == function ]]; then
|
| 527 |
# Check that the module is valid
|
| 528 |
x=false
|
| 529 |
for mod in ${MODULES[@]}; do
|
| 530 |
if [[ $( ${mod}_provides ) == ${conf[0]} ]]; then
|
| 531 |
x=true
|
| 532 |
break
|
| 533 |
fi
|
| 534 |
done
|
| 535 |
|
| 536 |
if ! ${x}; then
|
| 537 |
[[ $( type -t ${conf[0]}_check_installed == function ) ]] && ${conf[0]}_check_installed true
|
| 538 |
eerror "No loaded modules provide \"${conf[0]}\" (${conf[0]}_start)"
|
| 539 |
else
|
| 540 |
eindent
|
| 541 |
${conf[0]}_start ${iface} ; x=$?
|
| 542 |
eoutdent
|
| 543 |
[[ ${x} == 0 ]] && continue
|
| 544 |
fi
|
| 545 |
# We need to test to see if it's an IP address or a function
|
| 546 |
# We do this by testing if the 1st character is a digit
|
| 547 |
elif [[ ${conf[0]:0:1} == [[:digit:]] ]]; then
|
| 548 |
x=0
|
| 549 |
# if [[ $(type -t address_exists ) == function ]]; then
|
| 550 |
# if address_exists ${iface} ${conf[0]} ; then
|
| 551 |
# eerror "${conf[0]%%/*} already taken on ${iface}"
|
| 552 |
# x=1
|
| 553 |
# fi
|
| 554 |
# fi
|
| 555 |
[[ ${x} == 0 ]] && interface_add_address ${iface} ${conf[@]} ; x=$?
|
| 556 |
eend ${x} && continue
|
| 557 |
else
|
| 558 |
eerror "No loaded modules provide \"${conf[0]}\" (${conf[0]}_start)"
|
| 559 |
fi
|
| 560 |
|
| 561 |
if [[ -n ${config_fallback[config_counter]} ]]; then
|
| 562 |
einfo "Trying fallback configuration"
|
| 563 |
config[config_counter]=${config_fallback[config_counter]}
|
| 564 |
config_fallback[label_counter]=''
|
| 565 |
(( config_counter-- )) # since the loop will increment it
|
| 566 |
continue
|
| 567 |
fi
|
| 568 |
|
| 569 |
# Only return failure if it was the first address for the interface
|
| 570 |
[[ ${config_counter} -eq 0 ]] && return 1
|
| 571 |
done
|
| 572 |
eoutdent
|
| 573 |
|
| 574 |
# Start any modules with _post_start
|
| 575 |
for mod in ${MODULES[@]}; do
|
| 576 |
if [[ function == $( type -t ${mod}_post_start ) ]]; then
|
| 577 |
${mod}_post_start ${iface} || return 1
|
| 578 |
fi
|
| 579 |
done
|
| 580 |
|
| 581 |
return 0
|
| 582 |
}
|
| 583 |
|
| 584 |
# bool iface_stop(char *interface)
|
| 585 |
#
|
| 586 |
# iface_stop: bring down an interface. Don't trust information in
|
| 587 |
# /etc/conf.d/net since the configuration might have changed since
|
| 588 |
# iface_start ran. Instead query for current configuration and bring
|
| 589 |
# down the interface.
|
| 590 |
#
|
| 591 |
# However, we are currently reliant on handler and modules specified
|
| 592 |
# in /etc/conf.d/net
|
| 593 |
iface_stop() {
|
| 594 |
local iface=${1} i aliases need_begin=false mod
|
| 595 |
local RC_INDENTATION=${RC_INDENTATION} # so it will reset after function
|
| 596 |
|
| 597 |
# pre Stop any modules
|
| 598 |
for mod in ${MODULES[@]}; do
|
| 599 |
[[ $( type -t ${mod}_pre_stop ) == function ]] && ${mod}_pre_stop ${iface}
|
| 600 |
done
|
| 601 |
|
| 602 |
einfo "Bringing down ${iface}"
|
| 603 |
eindent
|
| 604 |
|
| 605 |
# Collect list of aliases for this interface.
|
| 606 |
# List will be in reverse order.
|
| 607 |
aliases=$( interface_get_aliases_rev ${iface} )
|
| 608 |
|
| 609 |
# Stop aliases before primary interface.
|
| 610 |
# Note this must be done in reverse order, since ifconfig eth0:1
|
| 611 |
# will remove eth0:2, etc. It might be sufficient to simply remove
|
| 612 |
# the base interface but we're being safe here.
|
| 613 |
for i in ${aliases} ${iface}; do
|
| 614 |
# Stop all our modules
|
| 615 |
for mod in ${MODULES[@]}; do
|
| 616 |
[[ $( type -t ${mod}_stop ) == function ]] && ${mod}_stop ${i}
|
| 617 |
done
|
| 618 |
|
| 619 |
# A module may have removed the interface
|
| 620 |
interface_exists ${iface} || { eend 0; continue; }
|
| 621 |
|
| 622 |
# Delete all the addresses for this alias
|
| 623 |
interface_del_addresses ${i}
|
| 624 |
|
| 625 |
# Do final shut down of this alias
|
| 626 |
ebegin "Shutting down ${i}"
|
| 627 |
interface_iface_stop ${i}
|
| 628 |
eend $?
|
| 629 |
done
|
| 630 |
|
| 631 |
# post Stop any modules
|
| 632 |
for mod in ${MODULES[@]}; do
|
| 633 |
# We have already taken down the interface, so no need to error
|
| 634 |
[[ $( type -t ${mod}_post_stop ) == function ]] && ${mod}_post_stop ${iface}
|
| 635 |
done
|
| 636 |
|
| 637 |
return 0
|
| 638 |
}
|
| 639 |
|
| 640 |
# bool run_start(char *iface)
|
| 641 |
#
|
| 642 |
# Brings up ${IFACE}. Calls preup, iface_start, then postup.
|
| 643 |
# Returns 0 (success) unless preup or iface_start returns 1 (failure).
|
| 644 |
# Ignores the return value from postup.
|
| 645 |
# We cannot check that the device exists ourselves as modules like
|
| 646 |
# tuntap make create it.
|
| 647 |
run_start() {
|
| 648 |
local iface=${1} ifvar x
|
| 649 |
|
| 650 |
if [[ ${iface} == lo ]]; then
|
| 651 |
ebegin "Bringing up ${iface}"
|
| 652 |
interface_loopback_create
|
| 653 |
eend $?
|
| 654 |
return $?
|
| 655 |
fi
|
| 656 |
|
| 657 |
# We may not have a loaded module for ${iface}
|
| 658 |
# Some users may have "alias natsemi eth0" in /etc/modules.d/foo
|
| 659 |
# so we can work with this
|
| 660 |
# However, if they do the same with eth1 and try to start it
|
| 661 |
# but eth0 has not been loaded then the module gets loaded as
|
| 662 |
# eth0.
|
| 663 |
# Not much we can do about this :(
|
| 664 |
! interface_exists ${iface} && /sbin/modprobe ${iface} &>/dev/null
|
| 665 |
|
| 666 |
# Setup variables for pre/post to use
|
| 667 |
ifvar=$( interface_variable ${iface} )
|
| 668 |
local IFACE=${iface} IFVAR=${ifvar}
|
| 669 |
|
| 670 |
# Call user-defined preup function if it exists
|
| 671 |
if [[ $( type -t preup ) == function ]]; then
|
| 672 |
einfo "Running preup function"
|
| 673 |
eindent
|
| 674 |
preup ${iface} ; x=$?
|
| 675 |
eoutdent
|
| 676 |
if [[ ${x} != 0 ]]; then
|
| 677 |
eerror "preup ${iface} failed"
|
| 678 |
return 1
|
| 679 |
fi
|
| 680 |
fi
|
| 681 |
|
| 682 |
# Don't let preup modify us
|
| 683 |
iface=${1}
|
| 684 |
local IFACE=${iface} IFVAR=${ifvar}
|
| 685 |
|
| 686 |
# Start the interface
|
| 687 |
if ! iface_start ${iface} ; then
|
| 688 |
interface_down ${iface}
|
| 689 |
eend 1
|
| 690 |
return 1
|
| 691 |
fi
|
| 692 |
|
| 693 |
|
| 694 |
# Call user-defined postup function if it exists
|
| 695 |
if [[ $( type -t postup ) == function ]]; then
|
| 696 |
einfo "Running postup function"
|
| 697 |
eindent
|
| 698 |
postup ${iface}
|
| 699 |
eoutdent
|
| 700 |
fi
|
| 701 |
|
| 702 |
return 0
|
| 703 |
}
|
| 704 |
|
| 705 |
# bool run_stop(char *iface) {
|
| 706 |
#
|
| 707 |
# Brings down ${iface}. If predown call returns non-zero, then
|
| 708 |
# stop returns non-zero to indicate failure bringing down device.
|
| 709 |
# In all other cases stop returns 0 to indicate success.
|
| 710 |
run_stop() {
|
| 711 |
local iface=${1} ifvar x
|
| 712 |
|
| 713 |
# Don't run any special shutdown functions for lo
|
| 714 |
if [[ ${iface} == lo ]]; then
|
| 715 |
ebegin "Shutting down ${iface}"
|
| 716 |
interface_iface_stop ${iface}
|
| 717 |
eend $?
|
| 718 |
return 0
|
| 719 |
fi
|
| 720 |
|
| 721 |
# Setup variables for pre/post to use
|
| 722 |
ifvar=$( interface_variable ${iface} )
|
| 723 |
local IFACE=${iface} IFVAR=${ifvar}
|
| 724 |
|
| 725 |
# Call user-defined predown function if it exists
|
| 726 |
if [[ $( type -t predown ) == function ]]; then
|
| 727 |
einfo "Running predown function"
|
| 728 |
eindent
|
| 729 |
predown ${iface} ; x=$?
|
| 730 |
eoutdent
|
| 731 |
if [[ ${x} != 0 ]]; then
|
| 732 |
eend 1 "predown ${iface} failed"
|
| 733 |
return 1
|
| 734 |
fi
|
| 735 |
elif is_net_fs /; then
|
| 736 |
eerror "root filesystem is network mounted -- can't stop ${iface}"
|
| 737 |
return 1
|
| 738 |
fi
|
| 739 |
|
| 740 |
# Don't let predown modify us
|
| 741 |
iface=${1}
|
| 742 |
local IFACE=${iface} IFVAR=${ifvar}
|
| 743 |
|
| 744 |
iface_stop ${iface} || return 1 # always succeeds, btw
|
| 745 |
|
| 746 |
# Call user-defined postdown function if it exists
|
| 747 |
if [[ $( type -t postdown ) == function ]]; then
|
| 748 |
einfo "Running postdown function"
|
| 749 |
eindent
|
| 750 |
postdown ${iface}
|
| 751 |
eoutdent
|
| 752 |
fi
|
| 753 |
|
| 754 |
return 0
|
| 755 |
}
|
| 756 |
|
| 757 |
# bool run(char *iface, char *cmd)
|
| 758 |
#
|
| 759 |
# Main start/stop entry point
|
| 760 |
# We load modules here and remove any functions that they
|
| 761 |
# added as we may be called inside the same shell scope for another interface
|
| 762 |
run() {
|
| 763 |
local iface=${1} cmd=${2} r=1 RC_INDENTATION=${RC_INDENTATION} # so it will reset after function
|
| 764 |
local before starting=true
|
| 765 |
local -a MODULES mods
|
| 766 |
|
| 767 |
eindent
|
| 768 |
|
| 769 |
unset_functions=${unset_functions:-false}
|
| 770 |
${unset_functions} && before="$( typeset -F )"
|
| 771 |
[[ ${cmd} == "stop" ]] && starting=false
|
| 772 |
if modules_load ${iface} ${starting} ; then
|
| 773 |
if [[ ${cmd} == "stop" ]]; then
|
| 774 |
# Reverse the module list for stopping
|
| 775 |
mods=( "${MODULES[@]}" )
|
| 776 |
for ((i = 0; i < ${#mods[@]}; i++)); do
|
| 777 |
MODULES[i]=${mods[((${#mods[@]} - i - 1))]}
|
| 778 |
done
|
| 779 |
|
| 780 |
run_stop ${iface} && r=0
|
| 781 |
else
|
| 782 |
run_start ${iface} && r=0
|
| 783 |
fi
|
| 784 |
fi
|
| 785 |
|
| 786 |
# We need to remove added functions before we quit as other init
|
| 787 |
# scripts may be launching afterwards
|
| 788 |
${unset_functions} && \
|
| 789 |
unset $( diff -U0 <( echo "${before}" ) <( echo "$( typeset -F )" ) 2>/dev/null \
|
| 790 |
| awk 'BEGIN { ORS = " "; } /+declare -f/ { print $3; }' ) 2>/dev/null
|
| 791 |
|
| 792 |
return ${r}
|
| 793 |
}
|
| 794 |
|
| 795 |
# bool start(void)
|
| 796 |
#
|
| 797 |
# Start entry point so that we only have one function
|
| 798 |
# which localises variables and unsets functions
|
| 799 |
start() {
|
| 800 |
einfo "Starting ${IFACE}"
|
| 801 |
run ${IFACE} start
|
| 802 |
return $?
|
| 803 |
}
|
| 804 |
|
| 805 |
# bool stop(void)
|
| 806 |
#
|
| 807 |
# Stop entry point so that we only have one function
|
| 808 |
# which localises variables and unsets functions
|
| 809 |
stop() {
|
| 810 |
einfo "Stopping ${IFACE}"
|
| 811 |
run ${IFACE} stop
|
| 812 |
return $?
|
| 813 |
}
|
| 814 |
|
| 815 |
# bool restart(void)
|
| 816 |
#
|
| 817 |
# Restart entry point
|
| 818 |
# We do this so as we only have to remove functions when stopping
|
| 819 |
restart() {
|
| 820 |
local unset_functions=true
|
| 821 |
service_started "${myservice}" && svc_stop
|
| 822 |
unset_functions=false
|
| 823 |
svc_start
|
| 824 |
return $?
|
| 825 |
}
|
| 826 |
|
| 827 |
# vim:ts=4
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