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#!/bin/bash |
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for optionsfile in /etc/net/options /etc/net/options.d/*; do |
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[ -s "$optionsfile" ] && . $optionsfile |
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done |
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|
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DENOISE="egrep ^[^#]" |
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|
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# Stolen from /etc/init.d/functions and improved. |
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is_yes() |
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{ |
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case "$1" in |
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[Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|[Yy]|1) |
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# true returns zero |
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return 0 |
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;; |
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*) |
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# false returns one |
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return 1 |
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;; |
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esac |
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} |
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|
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is_no() |
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{ |
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case "$1" in |
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[Nn][Oo]|[Ff][Aa][Ll][Ss][Ee]|[Oo][Ff][Ff]|[Nn]|0) |
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# true returns zero |
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return 0 |
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;; |
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*) |
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# false returns one |
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return 1 |
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;; |
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esac |
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} |
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|
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SourceIfNotEmpty() |
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{ |
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local f |
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f="$1" |
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shift |
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[ -s "$f" ] && . "$f" "$@" |
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} |
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|
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ExecIfExecutable() |
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{ |
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local f |
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f="$1" |
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shift |
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[ -x "$f" ] && "$f" "$@" |
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} |
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|
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supported_type() |
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{ |
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local TYPE=${1:?missing 1st arg to $FUNCNAME} |
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[ -x $SCRIPTDIR/create-$TYPE -o -x $SCRIPTDIR/destroy-$TYPE ] && return 0 |
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return 1 |
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} |
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|
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# try to translate iface name into corresponding type |
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name2type() |
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{ |
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local NAME=${1:?missing 1st arg to $FUNCNAME} |
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local CAND=${NAME%%[0-9]*} |
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supported_type $CAND && echo $CAND |
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} |
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|
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# Read options hierarchy. Should work for unknown interfaces too. |
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pickup_options() |
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{ |
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# to determine iface type we must read it's config, but |
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# we should read global config and type config first. |
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# A workaround here. |
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SourceIfNotEmpty `profiled_filename $MYIFACEDIR/options` |
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is_yes "$DISABLED" && return |
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[ -z "$TYPE" ] && TYPE=`name2type $NAME` |
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[ -z "$TYPE" ] && { |
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print_error "No TYPE is specified for iface '$NAME' and can't guess automatically. Please fix." |
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return 1 |
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} |
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if ! supported_type $TYPE; then |
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print_error "iface type '$TYPE' is not supported" |
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fi |
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# source default options |
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SourceIfNotEmpty `profiled_filename $IFACEDIR/default/options` |
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# then source default options for our iface type |
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SourceIfNotEmpty `profiled_filename $IFACEDIR/default/options-$TYPE` |
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# and finally source iface options |
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SourceIfNotEmpty `profiled_filename $MYIFACEDIR/options` |
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# Load type-specific functions |
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SourceIfNotEmpty $SCRIPTDIR/functions-$TYPE |
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} |
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|
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print_error() |
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{ |
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echo "ERROR: $0: $@" >&2 |
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# don't hang if logger hangs |
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logger -p daemon.info -t /etc/net -- "ERROR: $0: $@" & |
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} |
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|
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# Don't display progress if not verbose. |
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if is_yes "$VERBOSE"; then |
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print_message() |
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{ |
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echo "$@" |
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return 0 |
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} |
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if is_yes "$PROGRESS"; then |
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print_progress() |
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{ |
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echo -n ${1:-.} |
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return 0 |
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} |
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print_nack() |
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{ |
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echo -n ${1:-!} |
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return 0 |
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} |
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fi |
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else |
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print_message() { return 0; } |
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print_progress() { return 0; } |
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print_nack() { return 0; } |
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fi |
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|
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iface_is_up() |
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{ |
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local NAME=${1:?missing 1st argument to $FUNCNAME} |
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$IP -o link show dev $NAME 2>/dev/null | cut -d' ' -f3 | grep -qs '[<,]UP[,>]' |
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} |
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|
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try_rmmod() |
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{ |
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local MODNAME=${1:?missing 1st argument to $FUNCNAME} |
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# Note: usage counter is treated in a different way by 2.6 kernels. |
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# This may cause bugs :( |
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$LSMOD | egrep -qs "^$MODNAME +[0-9]+ +0 " && rmmod $MODNAME |
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} |
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|
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# Look if iface name will change after ifrename call. |
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get_mapped_ifname() |
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{ |
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local OLDNAME=${1:?missing 1st argument to $FUNCNAME} |
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local PROF_IFTAB=`profiled_filename $IFTAB` |
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if [ -s "$PROF_IFTAB" ]; then |
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[ -x $IFRENAME ] || { |
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print_error "$IFRENAME is unavailable, but $PROF_IFTAB exists" |
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exit 1 |
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} |
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NEW_NAME=`$IFRENAME -c $PROF_IFTAB -i $OLDNAME -D 2>/dev/null | head -1 | cut -d' ' -f7 | sed 's/.$//'` |
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[ $? = 0 -a -n "$NEW_NAME" ] && echo $NEW_NAME |
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fi |
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} |
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|
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profiled_filename() |
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{ |
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local BASE=${1:?missing 1st arg to $FUNCNAME} |
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local CAND1=$BASE${NETPROFILE:+#$NETPROFILE}${NETHOST:+@$NETHOST} |
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local CAND2=$BASE${NETHOST:+@$NETHOST} |
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local CAND3=$BASE${NETPROFILE:+#$NETPROFILE} |
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local CAND4=$BASE |
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if [ -e $CAND1 ]; then |
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echo $CAND1 |
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elif [ -e $CAND2 ]; then |
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echo $CAND2 |
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elif [ -e $CAND3 ]; then |
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echo $CAND3 |
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else |
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echo $CAND4 |
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fi |
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return 0 |
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} |
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|
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# This function updates part of current config file namespace, consisting of |
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# profile name and host name. Profile name can be overriden, but host |
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# name can't be. |
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init_netprofile() |
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{ |
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if [ -n "$1" ]; then |
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NETPROFILE="$1" |
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elif [ -n "$MYIFACEDIR" -a -s "$MYIFACEDIR/selectprofile" -a -x "$MYIFACEDIR/selectprofile" ]; then |
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NETPROFILE=`$MYIFACEDIR/selectprofile $0 | head -1 | cut -d' ' -f1` |
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elif [ -z "$NETPROFILE" ]; then |
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if [ -s "$PROFILE_FILE" -a -r "$PROFILE_FILE" ]; then |
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NETPROFILE=`$DENOISE -m 1 "$PROFILE_FILE" | cut -d' ' -f1` |
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elif [ -r "$PROC_CMDLINE" ]; then |
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# try to fetch profile name from kernel options |
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NETPROFILE=`cat "$PROC_CMDLINE" | sed 's/ / /g' | \ |
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sed 's/ /\n/g' | egrep '^netprofile=' | cut -d'=' -f2` |
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fi |
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fi |
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return 0 |
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} |
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|
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# Network hostname init. Should be called by network.init during startup. |
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init_nethost() |
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{ |
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if [ -n "$1" ]; then |
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NETHOST="$1" |
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elif [ -s "$HOSTTAB" ] && grep "^$HOSTNAME " $HOSTTAB; then |
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NETHOST=`$DENOISE $HOSTTAB | grep -m 1 "^$HOSTNAME " | cut -d' ' -f2` |
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else |
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NETHOST=$HOSTNAME |
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fi |
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return 0 |
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} |
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|
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# iterator |
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foreach_child () |
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{ |
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local WHAT=${1:?missing 1st argument to $FUNCNAME} |
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local CHILDREN=`$SCRIPTDIR/childfinder $NAME` |
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local ret=0 |
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for child in $CHILDREN; do |
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$SCRIPTDIR/$WHAT $child || : $((ret++)) |
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done |
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return $ret |
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} |
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|
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# get down all dependant ifaces |
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ifdown_children () |
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{ |
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foreach_child ifdown |
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} |
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|
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# same for ifdown |
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ifup_children () |
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{ |
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foreach_child ifup |
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} |
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|
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# check if parent iface(s) (REQUIRES/HOST) is up and ifup if needed |
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ifup_parents () |
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{ |
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[ -z "$REQUIRES" -a -z "$HOST" ] && return 0 |
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local parent ret=0 |
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for parent in $REQUIRES $HOST; do |
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if ! iface_is_up $parent; then |
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$SCRIPTDIR/ifup $parent || { |
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ret=$? |
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break |
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} |
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fi |
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done |
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return $ret |
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} |
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|
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ifdown_parents () |
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{ |
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[ -z "$REQUIRES" -a -z "$HOST" ] && return 0 |
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local parent ret=0 |
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for parent in $REQUIRES $HOST; do |
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if iface_is_up $parent; then |
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$SCRIPTDIR/ifdown $parent || { |
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ret=$? |
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break |
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} |
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fi |
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done |
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return $ret |
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} |
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|
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iface_exists () |
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{ |
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local NAME=${1:?missing 1st argument to $FUNCNAME} |
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$IP li sh dev $NAME >/dev/null 2>&1 |
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} |
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|
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seen_iface () |
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{ |
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local needle=${1:?missing 1st arg to $FUNCNAME} |
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for cand in $SEEN_IFACES; do |
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[ "$cand" = "$needle" ] && return 0 |
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done |
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return 1 |
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} |
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|
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add_seen_iface () |
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{ |
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local newname=${1:?missing 1st arg to $FUNCNAME} |
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SEEN_IFACES="${SEEN_IFACES:+$SEEN_IFACES }$newname" |
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} |
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|
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# Universal configuration processor. Automatically does profiling, |
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# comments filtering and progress reporting. |
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xargise_file() |
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{ |
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local BASEFILE="${1:?missing 1st arg to $FUNCNAME}" |
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local PROCESSOR="${2:?missing 2nd arg to $FUNCNAME}" |
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local REALFILE=`profiled_filename $BASEFILE` |
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if [ -s $REALFILE ]; then |
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$DENOISE $REALFILE | xargs --max-lines=1 $PROCESSOR && print_progress |
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fi |
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return 0 |
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} |
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|
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# operation\first word | add X | del X | Y X |
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#----------------------+-------+-------+------ |
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# add | add X | del X | add X |
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#----------------------+-------+-------+------ |
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# del | del X | del X | del X |
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#----------------------+-------+-------+------ |
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process_ipv4rules() |
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{ |
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local OP=${1:?missing 1st arg to $FUNCNAME} |
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SRCFILE=`profiled_filename $MYIFACEDIR/ipv4rule` |
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[ -s "$SRCFILE" ] && $DENOISE "$SRCFILE" | \ |
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while read FIRST REST; do |
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case "$FIRST" in |
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add) |
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[ $OP = "del" ] && FIRST=del |
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;; |
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del) |
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# should we restore deleted rules on iface shutdown? |
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# [ $OP = "del" ] && FIRST=add |
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;; |
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*) |
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FIRST="$OP $FIRST" |
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;; |
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esac |
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$IP -4 rule $FIRST $REST |
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print_progress |
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done |
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} |
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|
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flush_addresses() |
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{ |
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local NAME=${1:?missing 1st arg to $FUNCNAME} |
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# Delete ip rules before addresses (and thus routes), see comment in |
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# config-ipv4:config_routes_rules() for exact reason. |
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process_ipv4rules del |
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$IP -4 address flush dev $NAME >/dev/null 2>&1 |
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$IP -6 address flush dev $NAME scope host >/dev/null 2>&1 |
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$IP -6 address flush dev $NAME scope site >/dev/null 2>&1 |
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$IP -6 address flush dev $NAME scope global >/dev/null 2>&1 |
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} |
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|
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have_ifplugd() |
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{ |
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if [ -x "${IFPLUGD:=$DEFAULT_IFPLUGD}" ]; then |
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echo yes |
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else |
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echo no |
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fi |
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} |
