diff options
Diffstat (limited to 'net-scripts/net.modules.d/ifconfig.sh')
| -rw-r--r-- | net-scripts/net.modules.d/ifconfig.sh | 98 |
1 files changed, 35 insertions, 63 deletions
diff --git a/net-scripts/net.modules.d/ifconfig.sh b/net-scripts/net.modules.d/ifconfig.sh index bec988e..4f7b82c 100644 --- a/net-scripts/net.modules.d/ifconfig.sh +++ b/net-scripts/net.modules.d/ifconfig.sh @@ -55,6 +55,38 @@ ifconfig_exists() { return 1 } +# char* cidr2netmask(int cidr) +# +# Returns the netmask of a given CIDR +cidr2netmask() { + local cidr="$1" netmask="" done=0 i sum=0 cur=128 + local octets frac + + (( octets=cidr/8 )) + (( frac=cidr%8 )) + while [[ octets -gt 0 ]] ; do + netmask="${netmask}.255" + (( octets-- )) + (( done++ )) + done + + if [[ ${done} -lt 4 ]] ; then + for (( i=0; i<${frac}; i++ )); do + (( sum+=cur )) + (( cur/=2 )) + done + netmask="${netmask}.${sum}" + (( done++ )) + + while [[ ${done} -lt 4 ]] ; do + netmask="${netmask}.0" + (( done++ )) + done + fi + + echo "${netmask:1}" +} + # void ifconfig_up(char *iface) # # provides a generic interface for bringing interfaces up @@ -383,71 +415,11 @@ ifconfig_add_address() { interface_up "${real_iface}" # Some kernels like to apply lo with an address when they are brought up - if [[ ${iface} == "lo" && ${config[@]} == "127.0.0.1 netmask 255.0.0.0 broadcast 127.255.255.255" ]]; then - ifconfig "${iface}" 0.0.0.0 + if [[ ${config[@]} == "127.0.0.1 netmask 255.0.0.0 broadcast 127.255.255.255" ]]; then + is_loopback "${iface}" && ifconfig "${iface}" 0.0.0.0 fi ifconfig "${iface}" ${config[@]} - r="$?" - [[ ${r} != "0" ]] && return ${r} - - local metric ifvar="$(bash_variable "${real_iface}")" - # Remove the newly added route and replace with our metric - metric="metric_${ifvar}" - [[ ${!metric:-0} == "0" ]] && return ${r} - - if [[ -z ${netmask} ]]; then - for (( i=1; i<${#config[@]}-1; i++ )); do - if [[ ${config[i]} == "netmask" ]]; then - netmask="${config[i+1]}" - cidr="$(netmask2cidr "${netmask}")" - break - fi - done - [[ -z ${netmask} ]] && return ${r} - fi - - local network="$(ip_network "${ip}" "${netmask}")" - - if route del -net "${network}/${cidr}" metric 0 dev "${iface}" \ - 2>/dev/null ; then - route add -net "${network}/${cidr}" metric "${!metric:-0}" dev "${iface}" - fi - - return ${r} -} - -# void ifconfig_route_metric(char* interface, int metric) -# -# Change all routes for an interface to a given metric -ifconfig_route_metric() { - local dest gateway mask flags metric ref use - route -n | grep " $1$" | { - while read dest gateway mask flags metric ref use ; do - if [[ ${gateway} != "0.0.0.0" ]]; then - gateway="gw ${gateway}" - else - unset gateway - fi - route del ${dest} - route add -net ${dest} netmask ${mask} ${gateway} metric "$2" dev "$1" - done - } -} - -# void ifconfig_default_route(char* interface, char* gateway_ip, int metric) -# -# Force default route to the specified gateway -ifconfig_default_route() { - local metric="${3:-0}" - - # Delete any existing default routes - while true ; do - route del default metric "${metric}" dev "$1" 2>/dev/null || break - done - - # Then we add our route - route add default gw "$2" metric "${metric}" dev "$1" } -# vim: set ft=sh ts=4 : +# vim: set ts=4 : |