diff options
| -rwxr-xr-x | examples/var_service/fw/run | 48 |
1 files changed, 36 insertions, 12 deletions
diff --git a/examples/var_service/fw/run b/examples/var_service/fw/run index 81c7f2e7c..871a70545 100755 --- a/examples/var_service/fw/run +++ b/examples/var_service/fw/run @@ -1,18 +1,20 @@ #!/bin/bash # (using bashism: arrays) -service="${PWD##*/}" -rundir="/var/run/service/$service" - -user=root -extif=if -ext_open_tcp="21 22 80" # space-separated +user="root" +reset_all_netdevs=true +preferred_default_route_iface="if" +extif="if" +ext_open_tcp="22 80 88" # space-separated # Make ourself one-shot sv o . # Debug #date '+%Y-%m-%d %H:%M:%S' >>"$0.log" +service=`basename $PWD` +rundir="/var/run/service/$service" + ### filter This is the default table (if no -t option is passed). It contains ### the built-in chains INPUT (for packets coming into the box itself), ### FORWARD (for packets being routed through the box), and OUTPUT (for @@ -70,7 +72,6 @@ ln -s "$rundir" rundir # Timestamping date '+%Y-%m-%d %H:%M:%S' - echo; echo "* Reading IP config" cfg=-1 # static cfg dhcp,zeroconf etc @@ -86,11 +87,19 @@ echo; echo "* Configuring hardware" #doit ethtool -K if rx off tx off sg off tso off echo; echo "* Resetting address and routing info" -doit ip a f dev lo -i=0; while test "${if[$i]}"; do - doit ip a f dev "${if[$i]}" - doit ip r f dev "${if[$i]}" root 0/0 -let i++; done +if $reset_all_netdevs; then + devs=`sed -n 's/ //g;s/:.*$//p' </proc/net/dev` + for if in $devs; do + doit ip a f dev "$if" + doit ip r f dev "$if" root 0/0 + done +else + doit ip a f dev lo + i=0; while test "${if[$i]}"; do + doit ip a f dev "${if[$i]}" + doit ip r f dev "${if[$i]}" root 0/0 + let i++; done +fi echo; echo "* Configuring addresses" doit ip a a dev lo 127.0.0.1/8 scope host @@ -103,7 +112,22 @@ i=0; while test "${if[$i]}"; do let i++; done echo; echo "* Configuring routes" +# If several ifaces are configured via DHCP, they often both have 0/0 route. +# They have no way of knowing that this route is offered on more than one iface. +# Often, it's desirable to prefer one iface: say, wired eth over wireless. +# if preferred_default_route_iface is not set, 0/0 route will be assigned randomly. +if test "$preferred_default_route_iface"; then + i=0; while test "${if[$i]}"; do + if test "${if[$i]}" = "$preferred_default_route_iface" \ + && test "${net[$i]}" = "0/0" \ + && test "${gw[$i]}"; then + echo "+ default route through ${if[$i]}, ${gw[$i]}:" + doit ip r a "${net[$i]}" via "${gw[$i]}" + fi + let i++; done +fi i=0; while test "${if[$i]}"; do + #echo $i:"${if[$i]}" if test "${net[$i]}" && test "${gw[$i]}"; then doit ip r a "${net[$i]}" via "${gw[$i]}" fi |