types: remove pid from sandbox state

No longer needed.

Signed-off-by: Peng Tao <bergwolf@hyper.sh>

virtcontainers/cgroups_test.go

@@ -154,8 +154,7 @@ func TestUpdateCgroups(t *testing.T) {
 	// fake workload
 	cmd := exec.Command("tail", "-f", "/dev/null")
 	assert.NoError(cmd.Start())
-	s.state.Pid = cmd.Process.Pid
-	s.hypervisor = &mockHypervisor{mockPid: s.state.Pid}
+	s.hypervisor = &mockHypervisor{mockPid: cmd.Process.Pid}
 
 	// no containers
 	err = s.updateCgroups()
@@ -167,7 +166,7 @@ func TestUpdateCgroups(t *testing.T) {
 	s.containers = map[string]*Container{
 		"abc": {
 			process: Process{
-				Pid: s.state.Pid,
+				Pid: cmd.Process.Pid,
 			},
 			config: &ContainerConfig{
 				Annotations: containerAnnotations,
@@ -175,7 +174,7 @@ func TestUpdateCgroups(t *testing.T) {
 		},
 		"xyz": {
 			process: Process{
-				Pid: s.state.Pid,
+				Pid: cmd.Process.Pid,
 			},
 			config: &ContainerConfig{
 				Annotations: containerAnnotations,

virtcontainers/kata_agent_test.go

@@ -570,7 +570,6 @@ func TestHandlePidNamespace(t *testing.T) {
 	}
 
 	sandbox := &Sandbox{}
-	sandbox.state.Pid = 0
 
 	k := kataAgent{}
 

virtcontainers/sandbox.go

@@ -1009,7 +1009,6 @@ func (s *Sandbox) addContainer(c *Container) error {
 
 	ann := c.GetAnnotations()
 	if ann[annotations.ContainerTypeKey] == string(PodSandbox) {
-		s.state.Pid = c.process.Pid
 		s.state.CgroupPath = c.state.CgroupPath
 		return s.store.Store(store.State, s.state)
 	}

virtcontainers/types/sandbox.go

@@ -34,10 +34,6 @@ type SandboxState struct {
 	// Index of the block device passed to hypervisor.
 	BlockIndex int `json:"blockIndex"`
 
-	// Pid is the process id of the sandbox container which is the first
-	// container to be started.
-	Pid int `json:"pid"`
-
 	// GuestMemoryBlockSizeMB is the size of memory block of guestos
 	GuestMemoryBlockSizeMB uint32 `json:"guestMemoryBlockSize"`