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Diffstat (limited to 'test/units/testsuite-19.delegate.sh')
| -rwxr-xr-x | test/units/testsuite-19.delegate.sh | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/test/units/testsuite-19.delegate.sh b/test/units/testsuite-19.delegate.sh new file mode 100755 index 0000000..74d36c4 --- /dev/null +++ b/test/units/testsuite-19.delegate.sh @@ -0,0 +1,115 @@ +#!/usr/bin/env bash +# SPDX-License-Identifier: LGPL-2.1-or-later +set -eux +set -o pipefail + +# Test cgroup delegation in the unified hierarchy + +# shellcheck source=test/units/util.sh +. "$(dirname "$0")"/util.sh + +if [[ "$(get_cgroup_hierarchy)" != unified ]]; then + echo "Skipping $0 as we're not running with the unified cgroup hierarchy" + exit 0 +fi + +at_exit() { + set +e + userdel -r test +} + +systemd-run --wait \ + --unit=test-0.service \ + --property="DynamicUser=1" \ + --property="Delegate=" \ + test -w /sys/fs/cgroup/system.slice/test-0.service/ -a \ + -w /sys/fs/cgroup/system.slice/test-0.service/cgroup.procs -a \ + -w /sys/fs/cgroup/system.slice/test-0.service/cgroup.subtree_control + +# Test if this also works for some of the more recent attrs the kernel might or might not support +for attr in cgroup.threads memory.oom.group memory.reclaim ; do + + if grep -q "$attr" /sys/kernel/cgroup/delegate ; then + systemd-run --wait \ + --unit=test-0.service \ + --property="DynamicUser=1" \ + --property="Delegate=" \ + test -w /sys/fs/cgroup/system.slice/test-0.service/ -a \ + -w /sys/fs/cgroup/system.slice/test-0.service/"$attr" + fi +done + +systemd-run --wait \ + --unit=test-1.service \ + --property="DynamicUser=1" \ + --property="Delegate=memory pids" \ + grep -q memory /sys/fs/cgroup/system.slice/test-1.service/cgroup.controllers + +systemd-run --wait \ + --unit=test-2.service \ + --property="DynamicUser=1" \ + --property="Delegate=memory pids" \ + grep -q pids /sys/fs/cgroup/system.slice/test-2.service/cgroup.controllers + +# "io" is not among the controllers enabled by default for all units, verify that +grep -qv io /sys/fs/cgroup/system.slice/cgroup.controllers + +# Run a service with "io" enabled, and verify it works +systemd-run --wait \ + --unit=test-3.service \ + --property="IOAccounting=yes" \ + --property="Slice=system-foo-bar-baz.slice" \ + grep -q io /sys/fs/cgroup/system.slice/system-foo.slice/system-foo-bar.slice/system-foo-bar-baz.slice/test-3.service/cgroup.controllers + +# We want to check if "io" is removed again from the controllers +# list. However, PID 1 (rightfully) does this asynchronously. In order +# to force synchronization on this, let's start a short-lived service +# which requires PID 1 to refresh the cgroup tree, so that we can +# verify that this all works. +systemd-run --wait --unit=test-4.service true + +# And now check again, "io" should have vanished +grep -qv io /sys/fs/cgroup/system.slice/cgroup.controllers + +# Check that unprivileged delegation works for scopes +useradd test ||: +systemd-run --uid=test \ + --property="User=test" \ + --property="Delegate=yes" \ + --slice workload.slice \ + --unit test-workload0.scope\ + --scope \ + test -w /sys/fs/cgroup/workload.slice/test-workload0.scope -a \ + -w /sys/fs/cgroup/workload.slice/test-workload0.scope/cgroup.procs -a \ + -w /sys/fs/cgroup/workload.slice/test-workload0.scope/cgroup.subtree_control + +# Verify that DelegateSubgroup= affects ownership correctly +unit="test-subgroup-$RANDOM.service" +systemd-run --wait \ + --unit="$unit" \ + --property="DynamicUser=1" \ + --property="Delegate=pids" \ + --property="DelegateSubgroup=foo" \ + test -w "/sys/fs/cgroup/system.slice/$unit" -a \ + -w "/sys/fs/cgroup/system.slice/$unit/foo" + +# Check that for the subgroup also attributes that aren't covered by +# regular (i.e. main cgroup) delegation ownership rules are delegated properly +if test -f /sys/fs/cgroup/cgroup.max.depth; then + unit="test-subgroup-$RANDOM.service" + systemd-run --wait \ + --unit="$unit" \ + --property="DynamicUser=1" \ + --property="Delegate=pids" \ + --property="DelegateSubgroup=zzz" \ + test -w "/sys/fs/cgroup/system.slice/$unit/zzz/cgroup.max.depth" +fi + +# Check that the invoked process itself is also in the subgroup +unit="test-subgroup-$RANDOM.service" +systemd-run --wait \ + --unit="$unit" \ + --property="DynamicUser=1" \ + --property="Delegate=pids" \ + --property="DelegateSubgroup=bar" \ + grep -q -x -F "0::/system.slice/$unit/bar" /proc/self/cgroup |