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tests: add pids.limit tests

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Signed-off-by: Aleksa Sarai <cyphar@cyphar.com>
This commit is contained in:
Aleksa Sarai
2025-10-24 15:30:40 +11:00
parent 3b75374cc7
commit 72421e0e25
2 changed files with 62 additions and 0 deletions
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31
tests/integration/cgroups.bats
View File

@@ -324,6 +324,37 @@ convert_hugetlb_size() {
done
}
# https://github.com/opencontainers/runc/issues/4014.
@test "runc run (pids.limit=0 means 1)" {
[ $EUID -ne 0 ] && requires rootless_cgroup
requires cgroups_pids
set_cgroups_path
update_config '.linux.resources.pids.limit = 0'
runc run -d --console-socket "$CONSOLE_SOCKET" test_pids
[ "$status" -eq 0 ]
# systemd doesn't support TasksMax=0 so runc will silently remap it to 1
# (for consistency, we do this for systemd *and* cgroupfs).
check_cgroup_value "pids.max" "1"
check_systemd_value "TasksMax" "1"
}
# https://github.com/opencontainers/runc/issues/4014.
@test "runc run (pids.limit=-1 means unlimited)" {
[ $EUID -ne 0 ] && requires rootless_cgroup
requires cgroups_pids
set_cgroups_path
update_config '.linux.resources.pids.limit = -1'
runc run -d --console-socket "$CONSOLE_SOCKET" test_pids
[ "$status" -eq 0 ]
check_cgroup_value "pids.max" "max"
# systemd < v227 shows UINT64_MAX instead of "infinity".
check_systemd_value "TasksMax" "infinity" "18446744073709551615"
}
@test "runc run (cgroup v2 resources.unified only)" {
requires root cgroups_v2

31
tests/integration/update.bats
View File

@@ -327,6 +327,37 @@ EOF
check_cpu_shares 100
}
@test "update pids.limit" {
[ $EUID -ne 0 ] && requires rootless_cgroup
requires cgroups_pids
runc run -d --console-socket "$CONSOLE_SOCKET" test_update
[ "$status" -eq 0 ]
check_cgroup_value "pids.max" 20
check_systemd_value "TasksMax" 20
runc update test_update --pids-limit 12345
[ "$status" -eq 0 ]
check_cgroup_value "pids.max" "12345"
check_systemd_value "TasksMax" "12345"
runc update test_update --pids-limit -1
[ "$status" -eq 0 ]
check_cgroup_value "pids.max" "max"
# systemd < v227 shows UINT64_MAX instead of "infinity".
check_systemd_value "TasksMax" "infinity" "18446744073709551615"
runc update test_update --pids-limit 0
[ "$status" -eq 0 ]
# systemd doesn't support TasksMax=0 so runc will silently remap it to 1.
check_cgroup_value "pids.max" "1"
check_systemd_value "TasksMax" "1"
}
@test "cpu burst" {
[ $EUID -ne 0 ] && requires rootless_cgroup
requires cgroups_cpu_burst