summaryrefslogtreecommitdiffhomepage
path: root/pkg/sentry/contexttest/contexttest.go
diff options
context:
space:
mode:
Diffstat (limited to 'pkg/sentry/contexttest/contexttest.go')
-rw-r--r--pkg/sentry/contexttest/contexttest.go188
1 files changed, 0 insertions, 188 deletions
diff --git a/pkg/sentry/contexttest/contexttest.go b/pkg/sentry/contexttest/contexttest.go
deleted file mode 100644
index 031fc64ec..000000000
--- a/pkg/sentry/contexttest/contexttest.go
+++ /dev/null
@@ -1,188 +0,0 @@
-// Copyright 2018 The gVisor Authors.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-// Package contexttest builds a test context.Context.
-package contexttest
-
-import (
- "os"
- "sync/atomic"
- "testing"
- "time"
-
- "gvisor.dev/gvisor/pkg/context"
- "gvisor.dev/gvisor/pkg/memutil"
- "gvisor.dev/gvisor/pkg/sentry/kernel/auth"
- ktime "gvisor.dev/gvisor/pkg/sentry/kernel/time"
- "gvisor.dev/gvisor/pkg/sentry/limits"
- "gvisor.dev/gvisor/pkg/sentry/pgalloc"
- "gvisor.dev/gvisor/pkg/sentry/platform"
- "gvisor.dev/gvisor/pkg/sentry/platform/ptrace"
- "gvisor.dev/gvisor/pkg/sentry/uniqueid"
-)
-
-// Context returns a Context that may be used in tests. Uses ptrace as the
-// platform.Platform.
-//
-// Note that some filesystems may require a minimal kernel for testing, which
-// this test context does not provide. For such tests, see kernel/contexttest.
-func Context(tb testing.TB) context.Context {
- const memfileName = "contexttest-memory"
- memfd, err := memutil.CreateMemFD(memfileName, 0)
- if err != nil {
- tb.Fatalf("error creating application memory file: %v", err)
- }
- memfile := os.NewFile(uintptr(memfd), memfileName)
- mf, err := pgalloc.NewMemoryFile(memfile, pgalloc.MemoryFileOpts{})
- if err != nil {
- memfile.Close()
- tb.Fatalf("error creating pgalloc.MemoryFile: %v", err)
- }
- p, err := ptrace.New()
- if err != nil {
- tb.Fatal(err)
- }
- // Test usage of context.Background is fine.
- return &TestContext{
- Context: context.Background(),
- l: limits.NewLimitSet(),
- mf: mf,
- platform: p,
- creds: auth.NewAnonymousCredentials(),
- otherValues: make(map[interface{}]interface{}),
- }
-}
-
-// TestContext represents a context with minimal functionality suitable for
-// running tests.
-type TestContext struct {
- context.Context
- l *limits.LimitSet
- mf *pgalloc.MemoryFile
- platform platform.Platform
- creds *auth.Credentials
- otherValues map[interface{}]interface{}
-}
-
-// globalUniqueID tracks incremental unique identifiers for tests.
-var globalUniqueID uint64
-
-// globalUniqueIDProvider implements unix.UniqueIDProvider.
-type globalUniqueIDProvider struct{}
-
-// UniqueID implements unix.UniqueIDProvider.UniqueID.
-func (*globalUniqueIDProvider) UniqueID() uint64 {
- return atomic.AddUint64(&globalUniqueID, 1)
-}
-
-// lastInotifyCookie is a monotonically increasing counter for generating unique
-// inotify cookies. Must be accessed using atomic ops.
-var lastInotifyCookie uint32
-
-// hostClock implements ktime.Clock.
-type hostClock struct {
- ktime.WallRateClock
- ktime.NoClockEvents
-}
-
-// Now implements ktime.Clock.Now.
-func (hostClock) Now() ktime.Time {
- return ktime.FromNanoseconds(time.Now().UnixNano())
-}
-
-// RegisterValue registers additional values with this test context. Useful for
-// providing values from external packages that contexttest can't depend on.
-func (t *TestContext) RegisterValue(key, value interface{}) {
- t.otherValues[key] = value
-}
-
-// Value implements context.Context.
-func (t *TestContext) Value(key interface{}) interface{} {
- switch key {
- case auth.CtxCredentials:
- return t.creds
- case limits.CtxLimits:
- return t.l
- case pgalloc.CtxMemoryFile:
- return t.mf
- case pgalloc.CtxMemoryFileProvider:
- return t
- case platform.CtxPlatform:
- return t.platform
- case uniqueid.CtxGlobalUniqueID:
- return (*globalUniqueIDProvider).UniqueID(nil)
- case uniqueid.CtxGlobalUniqueIDProvider:
- return &globalUniqueIDProvider{}
- case uniqueid.CtxInotifyCookie:
- return atomic.AddUint32(&lastInotifyCookie, 1)
- case ktime.CtxRealtimeClock:
- return hostClock{}
- default:
- if val, ok := t.otherValues[key]; ok {
- return val
- }
- return t.Context.Value(key)
- }
-}
-
-// MemoryFile implements pgalloc.MemoryFileProvider.MemoryFile.
-func (t *TestContext) MemoryFile() *pgalloc.MemoryFile {
- return t.mf
-}
-
-// RootContext returns a Context that may be used in tests that need root
-// credentials. Uses ptrace as the platform.Platform.
-func RootContext(tb testing.TB) context.Context {
- return WithCreds(Context(tb), auth.NewRootCredentials(auth.NewRootUserNamespace()))
-}
-
-// WithCreds returns a copy of ctx carrying creds.
-func WithCreds(ctx context.Context, creds *auth.Credentials) context.Context {
- return &authContext{ctx, creds}
-}
-
-type authContext struct {
- context.Context
- creds *auth.Credentials
-}
-
-// Value implements context.Context.
-func (ac *authContext) Value(key interface{}) interface{} {
- switch key {
- case auth.CtxCredentials:
- return ac.creds
- default:
- return ac.Context.Value(key)
- }
-}
-
-// WithLimitSet returns a copy of ctx carrying l.
-func WithLimitSet(ctx context.Context, l *limits.LimitSet) context.Context {
- return limitContext{ctx, l}
-}
-
-type limitContext struct {
- context.Context
- l *limits.LimitSet
-}
-
-// Value implements context.Context.
-func (lc limitContext) Value(key interface{}) interface{} {
- switch key {
- case limits.CtxLimits:
- return lc.l
- default:
- return lc.Context.Value(key)
- }
-}