diff options
Diffstat (limited to 'fw/test')
| -rwxr-xr-x | fw/test/fwtest.rc | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/fw/test/fwtest.rc b/fw/test/fwtest.rc index 3f80242..bd7423d 100755 --- a/fw/test/fwtest.rc +++ b/fw/test/fwtest.rc @@ -547,10 +547,71 @@ echo '== a card' r=`{awk '$1 == "0.0.0.0" {print $3}' $tmp/nC/iproute | sed 1q} check 'and the route that went with the card' 10.9.9.254 $"r + # The question a firewall has to answer about its own death: + # does the network come back open, or not at all. A note is + # a fair stand-in for a crash - what matters is the kernel + # closing what fw held, which happens either way. No other + # fw is running here; the leak checks at the end say so. + kill fw | rc + sleep 3 + r=`{ps | awk '$NF == "fw"' | wc -l} + check 'killing one part kills the firewall' 0 $"r + r=`{awk '/4u$/ {print $1}' $tmp/nC/ipselftab} + check 'a dead fw leaves the stack no address' '' $"r + r=`{awk '$1 == "0.0.0.0" {print $3}' $tmp/nC/iproute | sed 1q} + check 'and no route: the network is down, not open' '' $"r + # "device" with nothing after it: the pkt interface is gone + # and the card was never given back + r=`{sed 1q $tmp/nC/ipifc/0/status | awk '{print $2}'} + check 'and nothing bound to hand the card back' maxtu $"r + + # recovery, without ever passing through open. The dead fw + # also left its control filesystem mounted, and a corpse of a + # mount fails every operation on it - including the check fw + # makes before touching a card. So a restart has that to get + # past too. + @{ $fw -n $tmp/nC -e /net/ether1 -m $mtpt $tmp/empty.ndb } >[2]/dev/null + if(~ $status '') + r=started + if not + r=refused + check 'it will not restart on a guess' refused $"r + + $fw -n $tmp/nC -e /net/ether1 -a 10.9.9.1/24 -g 10.9.9.254 \ + -m $mtpt $tmp/empty.ndb >[2] $tmp/rerr + sleep 2 + r=`{grep -c 'cleared '^$mtpt $tmp/rerr} + check 'the control mount the dead one left is cleared away' 1 $"r + r=`{awk '/4u$/ {print $1}' $tmp/nC/ipselftab} + check 'but does when told the address the card no longer has' 10.9.9.1 $"r + r=`{awk '$1 == "0.0.0.0" {print $3}' $tmp/nC/iproute | sed 1q} + check 'route and all' 10.9.9.254 $"r + stopfw $tmp/nC } } +echo '== a dead firewall leaves a sandbox with no network either' +@{ + rfork n + $fw $tmp/empty.ndb >[2]/dev/null + # the drop is per process group and this block has its own, so it + # reaches this shell and its children and nothing else + echo 'chdev' '&~' 'IluĻ' > /dev/drivers + kill fw | rc + sleep 3 + if(@{ ls /net/tcp/clone } >/dev/null >[2]/dev/null) + r=there + if not + r=gone + check 'the filtered /net dies with it' gone $"r + if(@{ bind -a '#I' /net } >[2]/dev/null) + r=allowed + if not + r=refused + check 'and the real one cannot be bound back in its place' refused $"r +} + echo '== supervision' # fw daemonizes, like every other Plan 9 file server: the process you # exec posts to /srv, forks the server and exits. A supervisor watches |