freebsd-dev/tests/sys/common/vnet.subr
Gleb Smirnoff 80fc25025f tests/net*: destroy interface from inside a jail
There is no guarentee that upon return of 'jail -r' all jail resources
will be released.  The test suite used to rely on that.  Recent changes
to the PCB zones made jails delay releasing their resources, which ended
with interface leak in the test suite.

Fix that by executing 'ifconfig foo0 destroy' inside the jail, instead
of doing 'jail -r' and expecting interfaces to pop up back immediately
in the parent jail.

Reviewed by:		kp
Differential revision:	https://reviews.freebsd.org/D33942
2022-01-24 21:08:03 -08:00

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# VNET/jail utility functions
##
list_interface()
{
echo $1 >> created_interfaces.lst
}
unlist_interface()
{
sed -i "" /^$1\$/d created_interfaces.lst
}
vnet_init()
{
if [ "`sysctl -i -n kern.features.vimage`" != 1 ]; then
atf_skip "This test requires VIMAGE"
fi
}
vnet_mkepair()
{
ifname=$(ifconfig epair create)
list_interface $ifname
list_interface ${ifname%a}b
echo ${ifname%a}
}
vnet_mkbridge()
{
ifname=$(ifconfig bridge create)
list_interface $ifname
echo ${ifname}
}
vnet_mkvlan()
{
ifname=$(ifconfig vlan create)
list_interface $ifname
echo ${ifname}
}
vnet_mkloopback()
{
ifname=$(ifconfig lo create)
list_interface $ifname
echo ${ifname}
}
vnet_mkjail()
{
jailname=$1
shift
vnet_interfaces=
for ifname in $@
do
vnet_interfaces="${vnet_interfaces} vnet.interface=${ifname}"
unlist_interface $ifname
done
jail -c name=${jailname} persist vnet ${vnet_interfaces}
echo $jailname $@ >> created_jails.lst
}
vnet_ifmove()
{
ifname=$1
jailname=$2
ifconfig ${ifname} vnet ${jailname}
unlist_interface $ifname
sed -i "" "/^${jailname}/s/\$/ ${ifname}/" created_jails.lst
}
vnet_cleanup()
{
if [ -f created_jails.lst ]; then
while read jailname ifnames; do
for ifname in ${ifnames}; do
jexec ${jailname} ifconfig ${ifname} destroy
done
jail -r ${jailname}
done < created_jails.lst
rm created_jails.lst
fi
if [ -f created_interfaces.lst ]; then
for ifname in `cat created_interfaces.lst`
do
ifconfig ${ifname} destroy
done
rm created_interfaces.lst
fi
}