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#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
# Test various socket options that can be set by attaching programs to cgroups.
CGRP_MNT="/tmp/cgroupv2-test_cgrp2_sock"
################################################################################
#
print_result()
{
local rc=$1
local status=" OK "
[ $rc -ne 0 ] && status="FAIL"
printf "%-50s [%4s]\n" "$2" "$status"
}
check_sock()
{
out=$(test_cgrp2_sock)
echo $out | grep -q "$1"
if [ $? -ne 0 ]; then
print_result 1 "IPv4: $2"
echo " expected: $1"
echo " have: $out"
rc=1
else
print_result 0 "IPv4: $2"
fi
}
check_sock6()
{
out=$(test_cgrp2_sock -6)
echo $out | grep -q "$1"
if [ $? -ne 0 ]; then
print_result 1 "IPv6: $2"
echo " expected: $1"
echo " have: $out"
rc=1
else
print_result 0 "IPv6: $2"
fi
}
################################################################################
#
cleanup()
{
echo $$ >> ${CGRP_MNT}/cgroup.procs
rmdir ${CGRP_MNT}/sockopts
}
cleanup_and_exit()
{
local rc=$1
local msg="$2"
[ -n "$msg" ] && echo "ERROR: $msg"
ip li del cgrp2_sock
umount ${CGRP_MNT}
exit $rc
}
################################################################################
# main
rc=0
ip li add cgrp2_sock type dummy 2>/dev/null
set -e
mkdir -p ${CGRP_MNT}
mount -t cgroup2 none ${CGRP_MNT}
set +e
# make sure we have a known start point
cleanup 2>/dev/null
mkdir -p ${CGRP_MNT}/sockopts
[ $? -ne 0 ] && cleanup_and_exit 1 "Failed to create cgroup hierarchy"
# set pid into cgroup
echo $$ > ${CGRP_MNT}/sockopts/cgroup.procs
# no bpf program attached, so socket should show no settings
check_sock "dev , mark 0, priority 0" "No programs attached"
check_sock6 "dev , mark 0, priority 0" "No programs attached"
# verify device is set
#
test_cgrp2_sock -b cgrp2_sock ${CGRP_MNT}/sockopts
if [ $? -ne 0 ]; then
cleanup_and_exit 1 "Failed to install program to set device"
fi
check_sock "dev cgrp2_sock, mark 0, priority 0" "Device set"
check_sock6 "dev cgrp2_sock, mark 0, priority 0" "Device set"
# verify mark is set
#
test_cgrp2_sock -m 666 ${CGRP_MNT}/sockopts
if [ $? -ne 0 ]; then
cleanup_and_exit 1 "Failed to install program to set mark"
fi
check_sock "dev , mark 666, priority 0" "Mark set"
check_sock6 "dev , mark 666, priority 0" "Mark set"
# verify priority is set
#
test_cgrp2_sock -p 123 ${CGRP_MNT}/sockopts
if [ $? -ne 0 ]; then
cleanup_and_exit 1 "Failed to install program to set priority"
fi
check_sock "dev , mark 0, priority 123" "Priority set"
check_sock6 "dev , mark 0, priority 123" "Priority set"
# all 3 at once
#
test_cgrp2_sock -b cgrp2_sock -m 666 -p 123 ${CGRP_MNT}/sockopts
if [ $? -ne 0 ]; then
cleanup_and_exit 1 "Failed to install program to set device, mark and priority"
fi
check_sock "dev cgrp2_sock, mark 666, priority 123" "Priority set"
check_sock6 "dev cgrp2_sock, mark 666, priority 123" "Priority set"
cleanup_and_exit $rc
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