Method Value

pkg/sentry/kernel/kernel.go:1177–1231

Value implements context.Context.Value.

(key any)

// Value implements context.Context.Value.
func (ctx *createProcessContext) Value(key any) any {
	switch key {
	case CtxKernel:
		return ctx.kernel
	case CtxPIDNamespace:
		return ctx.args.PIDNamespace
	case CtxUTSNamespace:
		utsns := ctx.args.UTSNamespace
		utsns.IncRef()
		return utsns
	case ipc.CtxIPCNamespace:
		ipcns := ctx.args.IPCNamespace
		ipcns.IncRef()
		return ipcns
	case auth.CtxCredentials:
		return ctx.args.Credentials
	case vfs.CtxRoot:
		if ctx.args.MountNamespace == nil {
			return nil
		}
		root := ctx.args.MountNamespace.Root(ctx)
		return root
	case vfs.CtxMountNamespace:
		if ctx.kernel.globalInit == nil {
			return nil
		}
		mntns := ctx.kernel.GlobalInit().Leader().MountNamespace()
		mntns.IncRef()
		return mntns
	case devutil.CtxDevGoferClient:
		return ctx.kernel.GetDevGoferClient(ctx.kernel.ContainerName(ctx.args.ContainerID))
	case inet.CtxStack:
		return ctx.kernel.RootNetworkNamespace().Stack()
	case ktime.CtxRealtimeClock:
		return ctx.kernel.RealtimeClock()
	case limits.CtxLimits:
		return ctx.args.Limits
	case pgalloc.CtxMemoryCgroupID:
		return ctx.getMemoryCgroupID()
	case pgalloc.CtxMemoryFile:
		return ctx.kernel.mf
	case platform.CtxPlatform:
		return ctx.kernel
	case uniqueid.CtxGlobalUniqueID:
		return ctx.kernel.UniqueID()
	case uniqueid.CtxGlobalUniqueIDProvider:
		return ctx.kernel
	case uniqueid.CtxInotifyCookie:
		return ctx.kernel.GenerateInotifyCookie()
	case unimpl.CtxEvents:
		return ctx.kernel
	default:
		return nil
	}
}

func (ctx *createProcessContext) getMemoryCgroupID() uint32 {
	for cg := range ctx.args.InitialCgroups {