600 lines
13 KiB
Bash
Executable File
600 lines
13 KiB
Bash
Executable File
#!/sbin/runscript
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# Copyright 1999-2007 Gentoo Foundation
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# Distributed under the terms of the GNU General Public License v2
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MODULESDIR="${RC_LIBDIR}/net"
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MODULESLIST="${RC_SVCDIR}/nettree"
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_config_vars="config routes"
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[ -z "${IN_BACKGROUND}" ] && IN_BACKGROUND=false
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description="Configures network interfaces."
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depend() {
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local IFACE=${SVCNAME#*.}
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local IFVAR=$(echo -n "${IFACE}" | sed -e 's/[^[:alnum:]]/_/g')
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need localmount
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after bootmisc
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provide net
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case "${IFACE}" in
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lo|lo0) ;;
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*)
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after net.lo net.lo0
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local prov=
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eval prov=\$RC_NEED_${IFVAR}
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[ -n "${prov}" ] && need ${prov}
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eval prov=\$RC_USE_${IFVAR}
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[ -n "${prov}" ] && use ${prov}
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eval prov=\$RC_BEFORE_${IFVAR}
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[ -n "${prov}" ] && before ${prov}
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eval prov=\$RC_AFTER_${IFVAR}
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[ -n "${prov}" ] && after ${prov}
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eval prov=\$RC_PROVIDE_${IFVAR}
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[ -n "${prov}" ] && provide ${prov}
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;;
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esac
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}
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_shell_var() {
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echo -n "$1" | sed -e 's/[^[:alnum:]]/_/g'
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}
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# Credit to David Leverton for this function which handily maps a bash array
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# structure to positional parameters so existing configs work :)
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# We'll deprecate arrays at some point though.
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_get_array() {
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if [ -n "${BASH}" ] ; then
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case "$(declare -p "$1" 2>/dev/null)" in
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"declare -a "*)
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echo "set -- \"\${$1[@]}\""
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return
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;;
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esac
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fi
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echo "eval set -- \"\$$1\""
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}
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_wait_for_carrier() {
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local timeout= efunc=einfon
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_has_carrier && return 0
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eval timeout=\$carrier_timeout_${IFVAR}
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timeout=${timeout:-${carrier_timeout:-5}}
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# Incase users don't want this nice feature ...
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[ ${timeout} -le 0 ] && return 0
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[ "${RC_PARALLEL}" = "yes" ] && efunc=einfo
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${efunc} "Waiting for carrier (${timeout} seconds) "
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while [ ${timeout} -gt 0 ] ; do
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sleep 1
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if _has_carrier ; then
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[ "${efunc}" = "einfon" ] && echo
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eend 0
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return 0
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fi
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timeout=$((${timeout} - 1))
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[ "${efunc}" = "einfon" ] && printf "."
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done
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[ "${efunc}" = "einfon" ] && echo
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eend 1
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return 1
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}
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_netmask2cidr() {
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local i= len=0
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local IFS=.
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for i in $1; do
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while [ ${i} != "0" ] ; do
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len=$((${len} + ${i} % 2))
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i=$((${i} >> 1))
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done
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done
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echo "${len}"
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}
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_configure_variables() {
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local var= v= t=
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for var in ${_config_vars} ; do
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local v=
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for t in "$@" ; do
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eval v=\$${var}_${t}
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if [ -n "${v}" ] ; then
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eval ${var}_${IFVAR}=\$${var}_${t}
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continue 2
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fi
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done
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done
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}
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_show_address() {
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einfo "received address $(_get_inet_address "${IFACE}")"
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}
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# Basically sorts our modules into order and saves the list
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_gen_module_list() {
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local x= f= force=$1
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if ! ${force} && [ -s "${MODULESLIST}" -a "${MODULESLIST}" -nt "${MODULESDIR}" ] ; then
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local update=false
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for x in "${MODULESDIR}"/* ; do
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[ -e "${x}" ] || continue
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if [ "${x}" -nt "${MODULESLIST}" ] ; then
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update=true
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break
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fi
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done
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${update} || return 0
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fi
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einfo "Caching network module dependencies"
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# Run in a subshell to protect the main script
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(
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after() {
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eval ${MODULE}_after="\"\${${MODULE}_after}\${${MODULE}_after:+ }$*\""
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}
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before() {
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local mod=${MODULE}
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local MODULE=
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for MODULE in "$@" ; do
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after "${mod}"
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done
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}
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program() {
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if [ "$1" = "start" -o "$1" = "stop" ] ; then
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local s="$1"
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shift
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eval ${MODULE}_program_${s}="\"\${${MODULE}_program_${s}}\${${MODULE}_program_${s}:+ }$*\""
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else
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eval ${MODULE}_program="\"\${${MODULE}_program}\${${MODULE}_program:+ }$*\""
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fi
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}
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provide() {
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eval ${MODULE}_provide="\"\${${MODULE}_provide}\${${MODULE}_provide:+ }$*\""
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local x
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for x in $* ; do
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eval ${x}_providedby="\"\${${MODULE}_providedby}\${${MODULE}_providedby:+ }${MODULE}\""
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done
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}
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for MODULE in "${MODULESDIR}"/* ; do
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sh -n "${MODULE}" || continue
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. "${MODULE}" || continue
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MODULE=${MODULE#${MODULESDIR}/}
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MODULE=${MODULE%.sh}
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eval ${MODULE}_depend
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MODULES="${MODULES} ${MODULE}"
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done
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VISITED=
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SORTED=
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visit() {
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case " ${VISITED} " in
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*" $1 "*) return ;;
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esac
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VISITED="${VISITED} $1"
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eval AFTER=\$${1}_after
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for MODULE in ${AFTER} ; do
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eval PROVIDEDBY=\$${MODULE}_providedby
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if [ -n "${PROVIDEDBY}" ] ; then
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for MODULE in ${PROVIDEDBY} ; do
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visit "${MODULE}"
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done
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else
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visit "${MODULE}"
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fi
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done
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eval PROVIDE=\$${1}_provide
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for MODULE in ${PROVIDE} ; do
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visit "${MODULE}"
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done
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eval PROVIDEDBY=\$${1}_providedby
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[ -z "${PROVIDEDBY}" ] && SORTED="${SORTED} $1"
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}
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for MODULE in ${MODULES} ; do
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visit "${MODULE}"
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done
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> "${MODULESLIST}"
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i=0
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for MODULE in ${SORTED} ; do
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eval PROGRAM=\$${MODULE}_program
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eval PROGRAM_START=\$${MODULE}_program_start
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eval PROGRAM_STOP=\$${MODULE}_program_stop
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#for x in ${PROGRAM} ; do
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# [ -x "${x}" ] || continue 2
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#done
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eval PROVIDE=\$${MODULE}_provide
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echo "module_${i}='${MODULE}'" >> "${MODULESLIST}"
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echo "module_${i}_program='${PROGRAM}'" >> "${MODULESLIST}"
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echo "module_${i}_program_start='${PROGRAM_START}'" >> "${MODULESLIST}"
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echo "module_${i}_program_stop='${PROGRAM_STOP}'" >> "${MODULESLIST}"
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echo "module_${i}_provide='${PROVIDE}'" >> "${MODULESLIST}"
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i=$((${i} + 1))
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done
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echo "module_${i}=" >> "${MODULESLIST}"
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)
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return 0
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}
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_load_modules() {
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local starting=$1 mymods=
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# Ensure our list is up to date
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_gen_module_list false
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if ! . "${MODULESLIST}" ; then
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_gen_module_list true
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. "${MODULESLIST}"
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fi
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MODULES=
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if [ "${IFACE}" != "lo" -a "${IFACE}" != "lo0" ] ; then
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eval mymods=\$modules_${IFVAR}
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[ -z "${mymods}" ] && mymods=${modules}
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fi
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local i=-1 x= mod= f= provides=
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while true ; do
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i=$((${i} + 1))
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eval mod=\$module_${i}
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[ -z "${mod}" ] && break
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[ -e "${MODULESDIR}/${mod}.sh" ] || continue
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eval set -- \$module_${i}_program
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if [ -n "$1" ] ; then
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x=
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for x in "$@" ; do
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[ -x "${x}" ] && break
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done
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[ -x "${x}" ] || continue
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fi
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if ${starting} ; then
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eval set -- \$module_${i}_program_start
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else
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eval set -- \$module_${i}_program_stop
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fi
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if [ -n "$1" ] ; then
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x=
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for x in "$@" ; do
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[ -x "${x}" ] && break
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done
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[ -x "${x}" ] || continue
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fi
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eval provides=\$module_${i}_provide
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if ${starting} ; then
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case " ${mymods} " in
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*" !${mod} "*) continue ;;
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*" !${provides} "*) [ -n "${provides}" ] && continue ;;
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esac
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fi
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MODULES="${MODULES}${MODULES:+ }${mod}"
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# Now load and wrap our functions
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if ! . "${MODULESDIR}/${mod}.sh" ; then
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eend 1 "${SVCNAME}: error loading module \`${mod}'"
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exit 1
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fi
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[ -z "${provides}" ] && continue
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# Wrap our provides
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local f=
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for f in pre_start start post_start ; do
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eval "${provides}_${f}() { type ${mod}_${f} >/dev/null 2>/dev/null || return 0; ${mod}_${f} \"\$@\"; }"
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done
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eval module_${mod}_provides="${provides}"
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eval module_${provides}_providedby="${mod}"
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done
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# Wrap our preferred modules
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for mod in ${mymods} ; do
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case " ${MODULES} " in
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*" ${mod} "*)
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eval x=\$module_${mod}_provides
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[ -z "${x}" ] && continue
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for f in pre_start start post_start ; do
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eval "${x}_${f}() { type ${mod}_${f} >/dev/null 2>/dev/null || return 0; ${mod}_${f} \"\$@\"; }"
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done
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eval module_${x}_providedby="${mod}"
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;;
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esac
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done
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# Finally remove any duplicated provides from our list if we're starting
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# Otherwise reverse the list
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local LIST="${MODULES}" p=
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MODULES=
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if ${starting} ; then
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for mod in ${LIST} ; do
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eval x=\$module_${mod}_provides
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if [ -n "${x}" ] ; then
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eval p=\$module_${x}_providedby
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[ "${mod}" != "${p}" ] && continue
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fi
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MODULES="${MODULES}${MODULES:+ }${mod}"
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done
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else
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for mod in ${LIST} ; do
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MODULES="${mod}${MODULES:+ }${MODULES}"
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done
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fi
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veinfo "Loaded modules: ${MODULES}"
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}
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_load_config() {
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eval "$(_get_array "config_${IFVAR}")"
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if [ "${IFACE}" = "lo" -o "${IFACE}" = "lo0" ] ; then
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set -- "127.0.0.1/8" "$@"
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else
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if [ $# -eq 0 ] ; then
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ewarn "No configuration specified; defaulting to DHCP"
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set -- "dhcp"
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fi
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fi
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# We store our config in an array like vars
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# so modules can influence it
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config_index=0
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for cmd in "$@" ; do
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eval config_${config_index}="'${cmd}'"
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config_index=$((${config_index} + 1))
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done
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# Terminate the list
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eval config_${config_index}=
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config_index=0
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eval $(_get_array fallback_${IFVAR})
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for cmd in "$@" ; do
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eval fallback_${config_index}="'${cmd}'"
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config_index=$((${config_index} + 1))
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done
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# Terminate the list
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eval fallback_${config_index}=
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# Don't set to zero, so any net modules don't have to do anything extra
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config_index=-1
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}
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start() {
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local IFACE=${SVCNAME#*.} oneworked=false module=
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local IFVAR=$(_shell_var "${IFACE}") cmd= metric=0 our_metric=$metric
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einfo "Bringing up interface ${IFACE}"
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eindent
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if [ -z "${MODULES}" ] ; then
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local MODULES=
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_load_modules true
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fi
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# We up the iface twice if we have a preup to ensure it's up if
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# available in preup and afterwards incase the user inadvertently
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# brings it down
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if type preup >/dev/null 2>/dev/null ; then
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_up 2>/dev/null
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ebegin "Running preup"
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eindent
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preup || return 1
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eoutdent
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fi
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_up 2>/dev/null
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for module in ${MODULES} ; do
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if type "${module}_pre_start" >/dev/null 2>/dev/null ; then
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if ! ${module}_pre_start ; then
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eend 1
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exit 1
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fi
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fi
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done
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if ! _exists ; then
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eerror "ERROR: interface ${IFACE} does not exist"
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eerror "Ensure that you have loaded the correct kernel module for your hardware"
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return 1
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fi
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if ! _wait_for_carrier ; then
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if service_started devd ; then
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ewarn "no carrier, but devd will start us when we have one"
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mark_service_inactive "${SVCNAME}"
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else
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eerror "no carrier"
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fi
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return 1
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fi
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local config= config_index=
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_load_config
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config_index=0
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if [ -n "${our_metric}" ] ; then
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metric=${our_metric}
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elif [ "${IFACE}" != "lo" -a "${IFACE}" != "lo0" ] ; then
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metric=$((${metric} + $(_ifindex)))
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fi
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while true ; do
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eval config=\$config_${config_index}
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[ -z "${config}" ] && break
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set -- "${config}"
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ebegin "$1"
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eindent
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case "$1" in
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noop)
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if [ -n "$(_get_inet_address)" ] ; then
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oneworked=true
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break
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fi
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;;
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null) : ;;
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[0-9]*|*:*) _add_address ${config} ;;
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*)
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if type "${config}_start" >/dev/null 2>/dev/null ; then
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"${config}"_start
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else
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eerror "nothing provides \`${config}'"
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fi
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;;
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esac
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if eend $? ; then
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oneworked=true
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else
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eval config=\$fallback_${IFVAR}
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if [ -n "${config}" ] ; then
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einfo "Trying fallback configuration"
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eval config_${config_index}=\$fallback_${IFVAR}
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eval fallback_${config_index}=
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config_index=$((${config_index} - 1))
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fi
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fi
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eoutdent
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config_index=$((${config_index} + 1))
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done
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if ! ${oneworked} ; then
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if type failup >/dev/null 2>/dev/null ; then
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ebegin "Running failup"
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eindent
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failup
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eoutdent
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fi
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return 1
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fi
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local hidefirstroute=false first=true routes=
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eval "$(_get_array "routes_${IFVAR}")"
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if [ "${IFACE}" = "lo" -o "${IFACE}" = "lo0" ] ; then
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set -- "127.0.0.0/8 via 127.0.0.1" "$@"
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hidefirstroute=true
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fi
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for cmd in "$@" ; do
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if ${first} ; then
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first=false
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einfo "Adding routes"
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fi
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eindent
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ebegin "${cmd}"
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# Work out if we're a host or a net if not told
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case "${cmd}" in
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*" -net "*|*" -host "*) ;;
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*" netmask "*) cmd="-net ${cmd}" ;;
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*)
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case "${cmd%% *}" in
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*.*.*.*/32) cmd="-host ${cmd}" ;;
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*.*.*.*/*|0.0.0.0|default) cmd="-net ${cmd}" ;;
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*) cmd="-host ${cmd}" ;;
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esac
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;;
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esac
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if ${hidefirstroute} ; then
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_add_route ${cmd} >/dev/null 2>/dev/null
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hidefirstroute=false
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else
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_add_route ${cmd} >/dev/null
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fi
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eend $?
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eoutdent
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done
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for module in ${MODULES} ; do
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if type "${module}_post_start" >/dev/null 2>/dev/null ; then
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if ! ${module}_post_start ; then
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eend 1
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exit 1
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fi
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fi
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done
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if type postup >/dev/null 2>/dev/null ; then
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ebegin "Running postup"
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eindent
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postup
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eoutdent
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fi
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return 0
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}
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stop() {
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local IFACE=${SVCNAME#*.} module=
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local IFVAR=$(_shell_var "${IFACE}") opts=
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einfo "Bringing down interface ${IFACE}"
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eindent
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if [ -z "${MODULES}" ] ; then
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local MODULES=
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_load_modules false
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fi
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if type predown >/dev/null 2>/dev/null ; then
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ebegin "Running predown"
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eindent
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predown || return 1
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eoutdent
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fi
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for module in ${MODULES} ; do
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if type "${module}_pre_stop" >/dev/null 2>/dev/null ; then
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if ! ${module}_pre_stop ; then
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eend 1
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exit 1
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fi
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fi
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done
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for module in ${MODULES} ; do
|
|
if type "${module}_stop" >/dev/null 2>/dev/null ; then
|
|
${module}_stop
|
|
fi
|
|
done
|
|
|
|
# Only delete addresses for non PPP interfaces
|
|
if ! type is_ppp >/dev/null 2>/dev/null || ! is_ppp ; then
|
|
_delete_addresses "${IFACE}"
|
|
fi
|
|
|
|
for module in ${MODULES} ; do
|
|
if type "${module}_post_stop" >/dev/null 2>/dev/null ; then
|
|
${module}_post_stop
|
|
fi
|
|
done
|
|
|
|
[ "${IN_BACKGROUND}" != "true" ] && \
|
|
[ "${IFACE}" != "lo" -a "${IFACE}" != "lo0" ] && \
|
|
_down 2>/dev/null
|
|
|
|
[ -x /sbin/resolvconf ] && resolvconf -d "${IFACE}"
|
|
|
|
if type postdown >/dev/null 2>/dev/null ; then
|
|
ebegin "Running postdown"
|
|
eindent
|
|
postdown
|
|
eoutdent
|
|
fi
|
|
|
|
return 0
|
|
}
|
|
|
|
# vim: set ts=4 sw=4 :
|