mirror of
https://github.com/gravitational/teleport
synced 2024-10-21 09:44:51 +00:00
138 lines
3.6 KiB
Go
138 lines
3.6 KiB
Go
//go:build linux
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// +build linux
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/*
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Copyright 2019 Gravitational, Inc.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package cgroup
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import (
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"os"
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"path"
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"testing"
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"github.com/gravitational/teleport/lib/utils"
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"github.com/google/uuid"
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"gopkg.in/check.v1"
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)
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func TestMain(m *testing.M) {
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utils.InitLoggerForTests()
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os.Exit(m.Run())
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}
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type Suite struct{}
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var _ = check.Suite(&Suite{})
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func TestControlGroups(t *testing.T) { check.TestingT(t) }
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// TestCreate tests creating and removing cgroups as well as shutting down
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// the service and unmounting the cgroup hierarchy.
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func (s *Suite) TestCreate(c *check.C) {
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// This test must be run as root. Only root can create cgroups.
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if !isRoot() {
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c.Skip("Tests for package cgroup can only be run as root.")
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}
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// Create temporary directory where cgroup2 hierarchy will be mounted.
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dir, err := os.MkdirTemp("", "cgroup-test")
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c.Assert(err, check.IsNil)
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defer os.RemoveAll(dir)
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// Start cgroup service.
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service, err := New(&Config{
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MountPath: dir,
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})
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c.Assert(err, check.IsNil)
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// Create fake session ID and cgroup.
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sessionID := uuid.New().String()
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err = service.Create(sessionID)
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c.Assert(err, check.IsNil)
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// Make sure that it exists.
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cgroupPath := path.Join(service.teleportRoot, sessionID)
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_, err = os.Stat(cgroupPath)
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if os.IsNotExist(err) {
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c.Fatalf("Could not find cgroup file %v: %v.", cgroupPath, err)
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}
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// Remove cgroup.
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err = service.Remove(sessionID)
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c.Assert(err, check.IsNil)
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// Make sure cgroup is gone.
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_, err = os.Stat(cgroupPath)
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if !os.IsNotExist(err) {
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c.Fatalf("Failed to remove cgroup at %v: %v.", cgroupPath, err)
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}
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// Close the cgroup service, this should unmound the cgroup filesystem.
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err = service.Close()
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c.Assert(err, check.IsNil)
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// Make sure the cgroup filesystem has been unmounted.
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_, err = os.Stat(cgroupPath)
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if !os.IsNotExist(err) {
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c.Fatalf("Failed to unmound cgroup filesystem from %v: %v.", dir, err)
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}
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}
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// TestCleanup tests the ability for Teleport to remove and cleanup all
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// cgroups which is performed upon startup.
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func (s *Suite) TestCleanup(c *check.C) {
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// This test must be run as root. Only root can create cgroups.
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if !isRoot() {
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c.Skip("Tests for package cgroup can only be run as root.")
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}
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// Create temporary directory where cgroup2 hierarchy will be mounted.
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dir, err := os.MkdirTemp("", "cgroup-test")
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c.Assert(err, check.IsNil)
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defer os.RemoveAll(dir)
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// Start cgroup service.
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service, err := New(&Config{
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MountPath: dir,
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})
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c.Assert(err, check.IsNil)
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defer service.Close()
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// Create fake session ID and cgroup.
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sessionID := uuid.New().String()
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err = service.Create(sessionID)
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c.Assert(err, check.IsNil)
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// Cleanup hierarchy to remove all cgroups.
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err = service.cleanupHierarchy()
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c.Assert(err, check.IsNil)
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// Make sure the cgroup no longer exists.
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cgroupPath := path.Join(service.teleportRoot, sessionID)
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_, err = os.Stat(cgroupPath)
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if os.IsNotExist(err) {
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c.Fatalf("Could not find cgroup file %v: %v.", cgroupPath, err)
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}
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}
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// isRoot returns a boolean if the test is being run as root or not. Tests
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// for this package must be run as root.
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func isRoot() bool {
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return os.Geteuid() == 0
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}
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