summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorBenedikt Boehm <hollow@gentoo.org>2005-10-09 09:51:22 +0000
committerBenedikt Boehm <hollow@gentoo.org>2005-10-09 09:51:22 +0000
commita3d6589edbfb58e090310ab8c57aedd84d3d0292 (patch)
tree602e8948c284e5958e96c1027982f5faf3ef9872
parentadd release helper (diff)
downloadbaselayout-vserver-a3d6589edbfb58e090310ab8c57aedd84d3d0292.tar.gz
baselayout-vserver-a3d6589edbfb58e090310ab8c57aedd84d3d0292.tar.bz2
baselayout-vserver-a3d6589edbfb58e090310ab8c57aedd84d3d0292.zip
add net.lo
svn path=/baselayout-vserver/trunk/; revision=55
-rwxr-xr-xnet-scripts/init.d/net.lo954
1 files changed, 954 insertions, 0 deletions
diff --git a/net-scripts/init.d/net.lo b/net-scripts/init.d/net.lo
new file mode 100755
index 0000000..c408a67
--- /dev/null
+++ b/net-scripts/init.d/net.lo
@@ -0,0 +1,954 @@
+#!/sbin/runscript
+# Copyright (c) 2004-2005 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+# Contributed by Roy Marples (uberlord@gentoo.org)
+# Many thanks to Aron Griffis (agriffis@gentoo.org)
+# for help, ideas and patches
+
+#NB: Config is in /etc/conf.d/net
+
+# For pcmcia users. note that pcmcia must be added to the same
+# runlevel as the net.* script that needs it.
+depend() {
+ need localmount
+ use coldplug pcmcia usb isdn wlan
+
+ # Load any custom depend functions for the given interface
+ # For example, br0 may need eth0 and eth1
+ local iface="${myservice##*.}"
+ [[ $( type -t depend_${iface} ) == "function" ]] && depend_${iface}
+
+ return 0
+}
+
+# Define where our modules are
+MODULES_DIR="/lib/rcscripts/net.modules.d"
+
+# Some defaults
+background="${background:-no}"
+
+# Load some functions shared between ourselves and our dhcp helpers
+source "${MODULES_DIR}/helpers.d/functions"
+
+# Make some wrappers to fudge after/before/need/use depend flags.
+# These are callbacks so MODULE will be set.
+after() {
+ local x="$*"
+ [[ $# -gt 1 ]] && x=$( echo -e "${x// /\n}" | sort | xargs )
+ eval "${MODULE}_after() { echo \"$x\"; }"
+}
+before() {
+ local x="$*"
+ [[ $# -gt 1 ]] && x=$( echo -e "${x// /\n}" | sort | xargs )
+ eval "${MODULE}_before() { echo \"$x\"; }"
+}
+need() {
+ local x="$*"
+ [[ $# -gt 1 ]] && x=$( echo -e "${x// /\n}" | sort | xargs )
+ eval "${MODULE}_need() { echo \"$x\"; }"
+}
+installed() {
+ local x="$*"
+ [[ $# -gt 1 ]] && x=$( echo -e "${x// /\n}" | sort | xargs )
+ # We deliberately misspell this as _installed will probably be used
+ # at some point
+ eval "${MODULE}_instlled() { echo \"$x\"; }"
+}
+
+sort() {
+ LC_ALL=C /bin/sort "$@"
+}
+
+# void go_background(void)
+#
+# Setup for backgrounding network script
+go_background() {
+ einfo "Backgrounding ..."
+ mark_service_inactive "net.${iface}"
+ exit 0
+}
+
+# bool module_load_minimum(char *module)
+#
+# Does the minimum checking on a module - even when forcing
+module_load_minimum() {
+ local f="$1" MODULE="${1##*/}"
+
+ if [[ ! -f ${f} ]]; then
+ eerror "${f} does not exist"
+ return 1
+ fi
+
+ if ! source "${f}" ; then
+ eerror "${MODULE} failed a sanity check"
+ return 1
+ fi
+
+ for f in check_installed provides check_depends depend; do
+ [[ $( type -t "${MODULE}_${f}" ) == "function" ]] && continue
+ eerror "${MODULE} does not support the required function ${f}"
+ return 1
+ done
+
+ return 0
+}
+
+# bool modules_load_auto()
+#
+# Load and check each module for sanity
+# If the module is not installed, the functions are to be removed
+modules_load_auto() {
+ local i j
+
+ # Populate the MODULES array
+ # Basically we treat evey file in ${MODULES_DIR} as a module
+ MODULES=( $( cd "${MODULES_DIR}" ; ls ) )
+ j="${#MODULES[@]}"
+ for (( i=0; i<j; i++ )); do
+ MODULES[i]="${MODULES_DIR}/${MODULES[i]}"
+ [[ ! -f ${MODULES[i]} ]] && unset MODULES[i]
+ done
+ MODULES=( "${MODULES[@]}" )
+
+ # Each of these sources into the global namespace, so it's
+ # important that module functions and variables are prefixed with
+ # the module name, for example iproute2_
+
+ j="${#MODULES[@]}"
+ loaded_interface=false
+ for (( i=0; i<j; i++ )); do
+ if [[ ${MODULES[i]##*/} == "interface" ]]; then
+ eerror "interface is a reserved name - cannot load a module called interface"
+ return 1
+ fi
+ (
+ u=0;
+ module_load_minimum "${MODULES[i]}" || u=1;
+ [[ ${u} == 0 ]] && ${MODULES[i]##*/}_check_installed false || u=1;
+ exit "${u}";
+ )
+
+ if [[ $? == 0 ]]; then
+ source "${MODULES[i]}"
+ MODULES[i]="${MODULES[i]##*/}"
+ else
+ unset MODULES[i]
+ fi
+ done
+
+ MODULES=( "${MODULES[@]}" )
+ return 0
+}
+
+# bool modules_check_installed(void)
+#
+# Ensure that all modules have the required modules loaded
+# This enables us to remove modules from the MODULES array
+# Whilst other modules can still explicitly call them
+# One example of this is essidnet which configures network
+# settings for the specific ESSID connected to as the user
+# may be using a daemon to configure wireless instead of our
+# iwconfig module
+modules_check_installed() {
+ local i j missingdeps nmods="${#MODULES[@]}"
+
+ for (( i=0; i<nmods; i++ )); do
+ [[ $( type -t "${MODULES[i]}_instlled" ) != "function" ]] && continue
+ for j in $( ${MODULES[i]}_instlled ); do
+ missingdeps=true
+ if [[ $( type -t "${j}_check_installed" ) == "function" ]]; then
+ ${j}_check_installed && missingdeps=false
+ fi
+ ${missingdeps} && unset MODULES[i] && unset PROVIDES[i] && break
+ done
+ done
+
+ MODULES=( "${MODULES[@]}" )
+ PROVIDES=( "${PROVIDES[@]}" )
+}
+
+# bool modules_check_user(void)
+modules_check_user() {
+ local -a umods
+ local i j k l npref nmods="${#MODULES[@]}"
+
+ # Has the interface got any specific modules?
+ eval umods=( \"\$\{modules_${iface}\[@\]\}\" )
+
+ # Global setting follows interface-specific setting
+ umods=( "${umods[@]}" "${modules[@]}" )
+
+ # Add our preferred modules
+ npref=3
+ umods=( "${umods[@]}" "iproute2" "dhcpcd" "iwconfig" "netplugd" )
+
+ # First we strip any modules that conflict from user settings
+ # So if the user specifies pump then we don't use dhcpcd
+ for (( i=0; i<${#umods[@]}; i++ )); do
+ # Some users will inevitably put "dhcp" in their modules
+ # list. To keep users from screwing up their system this
+ # way, ignore this setting so that the default dhcp
+ # module will be used.
+ [[ ${umods[i]} == "dhcp" ]] && continue
+
+ # We remove any modules we explicitly don't want
+ if [[ ${umods[i]} == !* ]]; then
+ for (( j=0; j<nmods; j++ )); do
+ [[ -z ${MODULES[j]} ]] && continue
+ if [[ ${umods[i]:1} == "${MODULES[j]}" \
+ || ${umods[i]:1} == "${PROVIDES[j]}" ]]; then
+ # We may need to setup a class wrapper for it even though
+ # we don't use it directly
+ # However, we put it into an array and wrap later as
+ # another module may provide the same thing
+ ${MODULES[j]}_check_installed \
+ && WRAP_MODULES=(
+ "${WRAP_MODULES[@]}"
+ "${MODULES[j]} ${PROVIDES[j]}"
+ )
+ unset MODULES[j]
+ unset PROVIDES[j]
+ break
+ fi
+ done
+ continue
+ fi
+
+ if [[ $( type -t "${umods[i]}_provides" ) != "function" ]]; then
+ # If the module is one of our preferred modules, then
+ # ignore this error; whatever is available will be
+ # used instead.
+ (( i < ${#umods[@]} - npref )) || continue
+
+ # The function may not exist because the modules software is
+ # not installed. Load the module and report its error
+ if [[ -e "${MODULES_DIR}/${umods[i]}" ]]; then
+ source "${MODULES_DIR}/${umods[i]}"
+ ${umods[i]}_check_installed true
+ else
+ eerror "The module \"${umods[i]}\" does not exist"
+ fi
+ return 1
+ fi
+
+ mod=$( ${umods[i]}_provides )
+ for (( j=0; j<nmods; j++ )); do
+ [[ -z ${MODULES[j]} ]] && continue
+ if [[ ${PROVIDES[j]} == "${mod}" && ${umods[i]} != "${MODULES[j]}" ]]; then
+ # We don't have a match - now ensure that we still provide an
+ # alternative. This is to handle our preferred modules.
+ for (( l=0; l<nmods; l++ )); do
+ [[ ${l} == "${j}" || -z ${MODULES[l]} ]] && continue
+ if [[ ${PROVIDES[l]} == "${mod}" ]]; then
+ unset MODULES[j]
+ unset PROVIDES[j]
+ break
+ fi
+ done
+ fi
+ done
+ done
+
+ # Then we strip conflicting modules.
+ # We only need to do this for 3rd party modules that conflict with
+ # our own modules and the preferred list AND the user modules
+ # list doesn't specify a preference.
+ for (( i=0; i<nmods-1; i++ )); do
+ [[ -z ${MODULES[i]} ]] && continue
+ for (( j=i+1; j<nmods; j++)); do
+ [[ -z ${MODULES[j]} ]] && continue
+ [[ ${PROVIDES[i]} == "${PROVIDES[j]}" ]] \
+ && unset MODULES[j] && unset PROVIDES[j]
+ done
+ done
+
+ MODULES=( "${MODULES[@]}" )
+ PROVIDES=( "${PROVIDES[@]}" )
+ return 0
+}
+
+# void modules_sort(void)
+
+modules_sort() {
+ local -a modnums sort_history modafter modbefore
+ local i j k p changed_something nmods="${#MODULES[@]}"
+
+ # Sort our modules
+ # We do this by assigning numbers to each module
+ # We also assign modbefore and modafter so we don't
+ # shell out as much because it's expensive on CPU.
+ modnums=()
+ for (( i=0; i<nmods; i++ )); do
+ modnums[i]="${i}"
+ [[ $( type -t "${MODULES[i]}_after" ) == "function" ]] \
+ && modafter[i]=$( ${MODULES[i]}_after )
+ [[ $( type -t "${MODULES[i]}_before" ) == "function" ]] \
+ && modbefore[i]=$( ${MODULES[i]}_before )
+ done
+
+ # Then we swap numbers based on and after/before flags
+ # until we don't swap anymore. The sort_history array prevents
+ # the possibility of an infinite loop
+ sort_history[0]="${modnums[*]}"
+ for (( k=1; 1; k++ )); do
+ changed_something=false
+ for (( i=0; i<nmods; i++ )); do
+ for p in ${modafter[i]}; do
+ for (( j=0; j<nmods; j++ )); do
+ [[ ${p} != "${MODULES[j]}" && ${p} != "${PROVIDES[j]}" ]] \
+ && continue
+
+ if [[ ${modnums[i]} -lt "${modnums[j]}" ]]; then
+ tmp="${modnums[i]}"
+ modnums[i]="${modnums[j]}"
+ modnums[j]="${tmp}"
+ changed_something=true
+ fi
+ done
+ done
+ for p in ${modbefore[i]}; do
+ for (( j=0; j<nmods; j++ )); do
+ [[ ${p} != "${MODULES[j]}" && ${p} != "${PROVIDES[j]}" ]] \
+ && continue
+
+ if [[ ${modnums[i]} -gt "${modnums[j]}" ]]; then
+ tmp="${modnums[i]}"
+ modnums[i]="${modnums[j]}"
+ modnums[j]="${tmp}"
+ changed_something=true
+ fi
+ done
+ done
+ done
+ ${changed_something} || break
+
+ # Make sure we aren't repeating a previous state
+ # First time through, k=1, k/2=0
+ sort_history[k]="${modnums[*]}"
+ if [[ ${sort_history[k]} == "${sort_history[k/2]}" ]]; then
+ eerror "Detected an infinite loop sorting modules; blundering ahead"
+ break
+ fi
+ done
+
+ # Finally we sort our modules in number order
+ um=""
+ for (( i=0; i<nmods; i++ )); do
+ um="${um}${modnums[i]} ${MODULES[i]} ${PROVIDES[i]}\n"
+ done
+
+ p=( $( echo -e "${um}" | sort -n | cut -d' ' -f2,3 ) )
+ MODULES=()
+ PROVIDES=()
+ j=0
+ for (( i=0; i<${#p[@]}; i+=2 )); do
+ MODULES[j]="${p[i]}"
+ PROVIDES[j]="${p[i+1]}"
+ (( j++ ))
+ done
+}
+
+# bool modules_check_depends(bool showprovides)
+modules_check_depends() {
+ local showprovides="${1:-false}" nmods="${#MODULES[@]}" i j needmod
+ local missingdeps p interface=false
+
+ for (( i=0; i<nmods; i++ )); do
+ if [[ $( type -t "${MODULES[i]}_need" ) == "function" ]]; then
+ for needmod in $( ${MODULES[i]}_need ); do
+ missingdeps=true
+ for (( j=0; j<nmods; j++ )); do
+ if [[ ${needmod} == "${MODULES[j]}" \
+ || ${needmod} == "${PROVIDES[j]}" ]]; then
+ missingdeps=false
+ break
+ fi
+ done
+ if ${missingdeps} ; then
+ eerror "${MODULES[i]} needs ${needmod} (dependency failure)"
+ return 1
+ fi
+ done
+ fi
+
+ ${MODULES[i]}_check_depends || return 1
+ [[ ${PROVIDES[i]} == "interface" ]] && interface=true
+
+ if ${showprovides} ; then
+ [[ ${PROVIDES[i]} != "${MODULES[i]}" ]] \
+ && veinfo "${MODULES[i]} provides ${PROVIDES[i]}"
+ fi
+ done
+
+ if ! ${interface} ; then
+ eerror "no interface module has been loaded"
+ return 1
+ fi
+
+ return 0
+}
+
+# bool modules_load(char *iface, bool starting)
+#
+# Loads the defined handler and modules for the interface
+# Returns 0 on success, otherwise 1
+modules_load() {
+ local iface="$1" starting="${2:-true}" MODULE p=false i j k
+ local -a x
+ local RC_INDENTATION="${RC_INDENTATION}"
+ local -a PROVIDES WRAP_MODULES
+
+ if [[ ${iface} != "lo" ]]; then
+ eval x=( \"\$\{modules_force_${iface}\[@\]\}\" )
+ [[ -n ${x} ]] && modules_force=( "${x[@]}" )
+ if [[ -n ${modules_force} ]]; then
+ ewarn "WARNING: You are forcing modules!"
+ ewarn "Do not complain or file bugs if things start breaking"
+ report=true
+ fi
+ fi
+
+ veinfo "Loading networking modules for ${iface}"
+ eindent
+
+ if [[ -z ${modules_force} ]]; then
+ modules_load_auto || return 1
+ else
+ j="${#modules_force[@]}"
+ for (( i=0; i<j; i++ )); do
+ module_load_minimum "${MODULES_DIR}/${modules_force[i]}" || return 1
+ ${modules_force[i]}_check_installed || unset modules_force[i]
+ done
+ modules_force=( "${modules_force[@]}" )
+
+ # Strip any duplicate modules providing the same thing
+ j="${#modules_force[@]}"
+ for (( i=0; i<j-1; i++ )); do
+ [[ -z ${modules_force[i]} ]] && continue
+ for (( k=i+1; k<j; k++ )); do
+ [[ -z ${modules_force[k]} ]] && continue
+ [[ $( ${modules_force[i]}_provides ) \
+ == $( ${modules_force[k]}_provides ) ]] \
+ && unset modules_force[k]
+ done
+ done
+
+ MODULES=( "${modules_force[@]}" )
+ fi
+
+ # We now buffer the _provides functions for a big speed boost
+ j="${#MODULES[@]}"
+ for (( i=0; i<j; i++ )); do
+ PROVIDES[i]=$( ${MODULES[i]}_provides )
+ done
+
+ if [[ -z ${modules_force[@]} ]]; then
+ if ${starting}; then
+ modules_check_user || return 1
+ fi
+ fi
+
+ # Setup class wrappers: interface_up -> iproute2_up, for example
+ j="${#MODULES[@]}"
+ for (( i=0; i<j; i++ )); do
+ function_wrap "${MODULES[i]}" "${PROVIDES[i]}"
+
+ # Now load our dependencies - we need to use the MODULE variable
+ # here as the after/before/need functions use it
+ if [[ -z ${modules_force[@]} ]]; then
+ MODULE="${MODULES[i]}"
+ ${MODULE}_depend
+ fi
+ done
+
+ # Some modules may be installed, but not selected by user preference
+ # so we wrap these if needed
+ j="${#WRAP_MODULES[@]}"
+ for (( i=0; i<j; i++ )); do
+ function_wrap "${WRAP_MODULES[i]}"
+ done
+
+ if [[ -z ${modules_force[@]} ]]; then
+ modules_check_installed || return 1
+ modules_sort || return 1
+ fi
+
+ veinfo "modules: ${MODULES[@]}"
+ eindent
+
+ ${starting} && p=true
+ modules_check_depends "${p}" || return 1
+ return 0
+}
+
+# bool iface_start(char *interface)
+#
+# iface_start is called from start. It's expected to start the base
+# interface (for example "eth0"), aliases (for example "eth0:1") and to start
+# VLAN interfaces (for example eth0.0, eth0.1). VLAN setup is accomplished by
+# calling itself recursively.
+iface_start() {
+ local iface="$1" mod config_counter="-1" x config_worked=false
+ local RC_INDENTATION="${RC_INDENTATION}"
+ local -a config fallback fallback_route conf a
+ local ifvar=$( bash_variable "$1" ) i j
+
+ # Try and work out a metric for the interface if we're on auto
+ eval x=\"\$\{metric_${ifvar}\}\"
+ if [[ -z ${x} ]]; then
+ if [[ ${RC_AUTO_INTERFACE} == "yes" ]]; then
+ eval "metric_${ifvar}=\""$( calculate_metric ${iface} )"\""
+ else
+ eval "metric_${ifvar}=0"
+ fi
+ fi
+
+ # pre Start any modules with
+ for mod in ${MODULES[@]}; do
+ if [[ $( type -t "${mod}_pre_start" ) == "function" ]]; then
+ ${mod}_pre_start "${iface}" || { eend 1; return 1; }
+ fi
+ done
+
+ # We now expand the configuration parameters and pray that the
+ # fallbacks expand to the same number as config or there will be
+ # trouble!
+ eval a=( \"\$\{config_${ifvar}\[@\]\}\" )
+ for (( i=0; i<${#a[@]}; i++ )); do
+ local -a b=( $( expand_parameters "${a[i]}" ) )
+ config=( "${config[@]}" "${b[@]}" )
+ done
+
+ eval a=( \"\$\{fallback_${ifvar}\[@\]\}\" )
+ for (( i=0; i<${#a[@]}; i++ )); do
+ local -a b=( $( expand_parameters "${a[i]}" ) )
+ fallback=( "${fallback[@]}" "${b[@]}" )
+ done
+
+ # We don't expand routes
+ eval fallback_route=( \"\$\{fallback_route_${ifvar}\[@\]\}\" )
+
+ # We must support old configs
+ if [[ -z ${config} ]]; then
+ interface_get_old_config "${iface}" || return 1
+ if [[ -n ${config} ]]; then
+ ewarn "You are using a depreciated configuration syntax for ${iface}"
+ ewarn "You are advised to read /etc/conf.d/net.example and upgrade it accordingly"
+ fi
+ fi
+
+ # Handle "noop" correctly
+ if [[ ${config[0]} == "noop" ]]; then
+ if interface_is_up "${iface}" true ; then
+ einfo "Keeping current configuration for ${iface}"
+ eend 0
+ return 0
+ fi
+
+ # Remove noop from the config var
+ config=( "${config[@]:1}" )
+ fi
+
+ # Provide a default of DHCP if no configuration is set and we're auto
+ # Otherwise a default of NULL
+ if [[ -z ${config} ]]; then
+# if [[ ${RC_AUTO_INTERFACE} == "yes" ]]; then
+ if [[ $( type -t "dhcp_start" ) == "function" ]]; then
+ config=( "dhcp" )
+ ewarn "Configuration not set for ${iface} - assuming dhcp"
+ else
+ eerror "Cannot default to dhcp as there is no dhcp module loaded"
+ eerror "No configuration for ${iface}"
+ return 1
+ fi
+# else
+# config=( "null" )
+# ewarn "Configuration not set for ${iface} - assuming null"
+# fi
+ fi
+
+ einfo "Bringing up ${iface}"
+ eindent
+ for (( config_counter=0; config_counter<${#config[@]}; config_counter++ )); do
+ # Handle null and noop correctly
+ if [[ ${config[config_counter]} == "null" \
+ || ${config[config_counter]} == "noop" ]]; then
+ eend 0
+ config_worked=true
+ continue
+ fi
+
+ # We convert it to an array - this has the added
+ # bonus of trimming spaces!
+ conf=( ${config[config_counter]} )
+ einfo "${conf[0]}"
+
+ # Do we have a function for our config?
+ if [[ $( type -t "${conf[0]}_start" ) == "function" ]]; then
+ eindent
+ ${conf[0]}_start "${iface}" ; x=$?
+ eoutdent
+ [[ ${x} == 0 ]] && config_worked=true && continue
+ # We need to test to see if it's an IP address or a function
+ # We do this by testing if the 1st character is a digit
+ elif [[ ${conf[0]:0:1} == [[:digit:]] || ${conf[0]} == *:* ]]; then
+ x="0"
+ if [[ ${RC_AUTO_INTERFACE} == "yes" \
+ && $(type -t address_exists ) == "function" ]]; then
+ if address_exists "${iface}" "${conf[0]}" ; then
+ eerror "${conf[0]%%/*} already taken on ${iface}"
+ x="1"
+ fi
+ fi
+ [[ ${x} == "0" ]] && interface_add_address "${iface}" ${conf[@]}; x="$?"
+ eend "${x}" && config_worked=true && continue
+ else
+ eerror "No loaded modules provide \"${conf[0]}\" (${conf[0]}_start)"
+ fi
+
+ if [[ -n ${fallback[config_counter]} ]]; then
+ einfo "Trying fallback configuration"
+ config[config_counter]="${fallback[config_counter]}"
+ fallback[config_counter]=""
+
+ # Do we have a fallback route?
+ if [[ -n ${fallback_route[config_counter]} ]]; then
+ eval "routes_${ifvar}=( "\"\$\{fallback_route\[${config_counter}\]\[@\]\}\"" )"
+ fallback_route[config_counter]=""
+ fi
+
+ (( config_counter-- )) # since the loop will increment it
+ continue
+ fi
+ done
+ eoutdent
+
+ # We return failure if no configuration parameters worked
+ ${config_worked} || return 1
+
+ # Start any modules with _post_start
+ for mod in ${MODULES[@]}; do
+ if [[ $( type -t "${mod}_post_start" ) == "function" ]]; then
+ ${mod}_post_start "${iface}" || return 1
+ fi
+ done
+
+ return 0
+}
+
+# bool iface_stop(char *interface)
+#
+# iface_stop: bring down an interface. Don't trust information in
+# /etc/conf.d/net since the configuration might have changed since
+# iface_start ran. Instead query for current configuration and bring
+# down the interface.
+iface_stop() {
+ local iface="$1" i aliases need_begin=false mod
+ local RC_INDENTATION="${RC_INDENTATION}"
+
+ # pre Stop any modules
+ for mod in ${MODULES[@]}; do
+ [[ $( type -t "${mod}_pre_stop" ) == "function" ]] \
+ && ${mod}_pre_stop "${iface}"
+ done
+
+ einfo "Bringing down ${iface}"
+ eindent
+
+ # Collect list of aliases for this interface.
+ # List will be in reverse order.
+ aliases=$( interface_get_aliases_rev "${iface}" )
+
+ # Stop aliases before primary interface.
+ # Note this must be done in reverse order, since ifconfig eth0:1
+ # will remove eth0:2, etc. It might be sufficient to simply remove
+ # the base interface but we're being safe here.
+ for i in ${aliases} ${iface}; do
+ # Stop all our modules
+ for mod in ${MODULES[@]}; do
+ [[ $( type -t "${mod}_stop" ) == "function" ]] && ${mod}_stop "${i}"
+ done
+
+ # A module may have removed the interface
+ if ! interface_exists "${iface}" ; then
+ eend 0
+ continue
+ fi
+
+ # Delete all the addresses for this alias
+ interface_del_addresses "${i}"
+
+ # Do final shut down of this alias
+ if ! ${IN_BACKGROUND}; then
+ ebegin "Shutting down ${i}"
+ interface_iface_stop "${i}"
+ eend "$?"
+ fi
+ done
+
+ # post Stop any modules
+ for mod in ${MODULES[@]}; do
+ # We have already taken down the interface, so no need to error
+ [[ $( type -t "${mod}_post_stop" ) == "function" ]] \
+ && ${mod}_post_stop "${iface}"
+ done
+
+ return 0
+}
+
+# bool run_start(char *iface)
+#
+# Brings up ${IFACE}. Calls preup, iface_start, then postup.
+# Returns 0 (success) unless preup or iface_start returns 1 (failure).
+# Ignores the return value from postup.
+# We cannot check that the device exists ourselves as modules like
+# tuntap make create it.
+run_start() {
+ local iface="$1" IFVAR=$( bash_variable "$1" )
+
+ # We do this so users can specify additional addresses for lo if they
+ # need too - additional routes too
+ # However, no extra modules are loaded as they are just not needed
+ if [[ ${iface} == "lo" ]]; then
+ metric_lo="0"
+ config_lo=( "127.0.0.1/8 brd 127.255.255.255" "${config_lo[@]}" )
+ routes_lo=( "127.0.0.0/8" "${routes_lo[@]}" )
+ fi
+
+ # We may not have a loaded module for ${iface}
+ # Some users may have "alias natsemi eth0" in /etc/modules.d/foo
+ # so we can work with this
+ # However, if they do the same with eth1 and try to start it
+ # but eth0 has not been loaded then the module gets loaded as
+ # eth0.
+ # Not much we can do about this :(
+ # Also, we cannot error here as some modules - such as bridge
+ # create interfaces
+ if ! interface_exists "${iface}" ; then
+ /sbin/modprobe "${iface}" &>/dev/null
+ fi
+
+ # Call user-defined preup function if it exists
+ if [[ $( type -t preup ) == "function" ]]; then
+ einfo "Running preup function"
+ eindent
+ ( preup "${iface}" )
+ eend "$?" "preup ${iface} failed" || return 1
+ eoutdent
+ fi
+
+ # If config is set to noop and the interface is up with an address
+ # then we don't start it
+ local config
+ eval config=( \"\$\{config_${IFVAR}\[@\]\}\" )
+ if [[ ${config[0]} == "noop" ]] && interface_is_up "${iface}" true ; then
+ einfo "Keeping current configuration for ${iface}"
+ eend 0
+ else
+ # Remove noop from the config var
+ [[ ${config[0]} == "noop" ]] \
+ && eval "config_${IFVAR}=( "\"\$\{config\[@\]:1\}\"" )"
+
+ # There may be existing ip address info - so we strip it
+ interface_del_addresses "${iface}"
+
+ # Start the interface
+ if ! iface_start "${iface}" ; then
+ interface_exists "${iface}" && interface_down "${iface}"
+ eend 1
+ return 1
+ fi
+ fi
+
+ # Call user-defined postup function if it exists
+ if [[ $( type -t postup ) == "function" ]]; then
+ einfo "Running postup function"
+ eindent
+ ( postup "${iface}" )
+ eoutdent
+ fi
+
+ return 0
+}
+
+# bool run_stop(char *iface) {
+#
+# Brings down ${iface}. If predown call returns non-zero, then
+# stop returns non-zero to indicate failure bringing down device.
+# In all other cases stop returns 0 to indicate success.
+run_stop() {
+ local iface="$1" IFVAR=$( bash_variable "$1" ) x
+
+ # Load our ESSID variable so users can use it in predown() instead
+ # of having to write code.
+ local ESSID=$( get_options "ESSID" ) ESSIDVAR
+ [[ -n ${ESSID} ]] && ESSIDVAR=$( bash_variable "${ESSID}" )
+
+ # Call user-defined predown function if it exists
+ if [[ $( type -t predown ) == "function" ]]; then
+ einfo "Running predown function"
+ eindent
+ ( predown "${iface}" )
+ eend $? "predown ${iface} failed" || return 1
+ eoutdent
+ elif is_net_fs /; then
+ eerror "root filesystem is network mounted -- can't stop ${iface}"
+ return 1
+ fi
+
+ iface_stop "${iface}" || return 1 # always succeeds, btw
+
+ # Call user-defined postdown function if it exists
+ if [[ $( type -t postdown ) == "function" ]]; then
+ einfo "Running postdown function"
+ eindent
+ ( postdown "${iface}" )
+ eoutdent
+ fi
+
+ return 0
+}
+
+# bool run(char *iface, char *cmd)
+#
+# Main start/stop entry point
+# We load modules here and remove any functions that they
+# added as we may be called inside the same shell scope for another interface
+run() {
+ local iface="$1" cmd="$2" r=1 RC_INDENTATION="${RC_INDENTATION}"
+ local starting=true
+ local -a MODULES mods
+ local IN_BACKGROUND="${IN_BACKGROUND}"
+
+ # No point in backgrounding if we're already there ...
+ # This is also required so we can select the "best" interface
+ if [[ ${IN_BACKGROUND} == "true" || ${IN_BACKGROUND} == "1" ]]; then
+ IN_BACKGROUND=true
+ background=false
+ else
+ IN_BACKGROUND=false
+ fi
+
+ # We need to override the exit function as runscript.sh now checks
+ # for it. We need it so we can mark the service as inactive ourselves.
+ unset -f exit
+
+ eindent
+ [[ ${cmd} == "stop" ]] && starting=false
+
+ # We force lo to only use these modules for a major speed boost
+ [[ ${iface} == "lo" ]] && modules_force=( "iproute2" "ifconfig" "system" )
+
+ if modules_load "${iface}" "${starting}" ; then
+ if [[ ${cmd} == "stop" ]]; then
+ # Reverse the module list for stopping
+ mods=( "${MODULES[@]}" )
+ for ((i = 0; i < ${#mods[@]}; i++)); do
+ MODULES[i]=${mods[((${#mods[@]} - i - 1))]}
+ done
+
+ run_stop "${iface}" && r=0
+ remove_state "${iface}"
+ else
+ run_start "${iface}" && r=0
+ fi
+ fi
+
+ # Only apply best state if we're on auto
+ if [[ ${r} == "0" ]]; then
+ local siface=""
+ if [[ ${RC_AUTO_INTERFACE} == "yes" ]]; then
+ siface=$( select_best_interface )
+ if [[ -n ${siface} ]]; then
+ einfo "Selecting best interface: ${siface}"
+ fi
+ elif [[ ${cmd} == "start" ]]; then
+ siface="${iface}"
+ fi
+ [[ -n ${siface} ]] && apply_state "${siface}"
+ else
+ if [[ ${cmd} == "start" ]]; then
+ # Call user-defined failup if it exists
+ if [[ $( type -t failup ) == "function" ]]; then
+ einfo "Running failup function"
+ eindent
+ ( failup "${iface}" )
+ eoutdent
+ fi
+ else
+ # Call user-defined faildown if it exists
+ if [[ $( type -t faildown ) == "function" ]]; then
+ einfo "Running faildown function"
+ eindent
+ ( faildown "${iface}" )
+ eoutdent
+ fi
+ fi
+ fi
+
+ return "${r}"
+}
+
+# void link_file(char *file)
+#
+# Move a config file from /etc to ${netdir} and creates a link if needed.
+# This enables net-scripts to control the config file for interface management
+# and allow /etc to become read only.
+link_file() {
+ local file="$1"
+ local link=$( readlink "/etc/${file}" 2>/dev/null )
+ if [[ ${link} != "${netdir}/${file}" ]]; then
+ if [[ -f "/etc/${file}" ]]; then
+ vewarn "Moving /etc/${file} to ${netdir}/${file} and creating link"
+ mv "/etc/${file}" "${netdir}"
+ ln -snf "${netdir}/${file}" "/etc/${file}"
+ fi
+ fi
+}
+
+# bool start(void)
+#
+# Start entry point so that we only have one function
+# which localises variables and unsets functions
+start() {
+ if [[ ${IN_HOTPLUG} == "1" ]]; then
+ # If we've been called by hotplug, check if we have
+ # a policy for the interface for not starting
+ local x ifvar=$( bash_variable "${IFACE}" )
+ eval x=\"\$\{hotplug_${ifvar}\}\"
+ if [[ ${x} == "no" || ${x} == "false" ]]; then
+ eerror "Not starting interface ${IFACE} due to hotplug policy"
+ unset -f exit
+ mark_service_stopped "net.${IFACE}"
+ exit 1
+ fi
+ fi
+
+ if [[ ! -d "${statedir}/${IFACE}" ]]; then
+ if ! mkdir -m 0755 -p "${statedir}/${IFACE}" ; then
+ eerror "Unable to create state directory!"
+ return 1
+ fi
+ fi
+
+ if [[ ${RC_AUTO_INTERFACE} == "yes" ]]; then
+ link_file "resolv.conf"
+ link_file "ntp.conf"
+ link_file "yp.conf"
+ fi
+
+ einfo "Starting ${IFACE}"
+ run "${IFACE}" start
+}
+
+# bool stop(void)
+#
+# Stop entry point so that we only have one function
+# which localises variables and unsets functions
+stop() {
+ einfo "Stopping ${IFACE}"
+ run "${IFACE}" stop
+}
+
+# vim:ts=4