bugfix: set pid of stopped container to 0

Signed-off-by: Michael Wan <[email protected]>

Author: HusterWan

daemon/mgr/container_state.go

@@ -105,7 +105,7 @@ func (c *Container) SetStatusStopped(exitCode int64, errMsg string) {
 	defer c.Unlock()
 	c.State.Status = types.StatusStopped
 	c.State.FinishedAt = time.Now().UTC().Format(utils.TimeLayout)
-	c.State.Pid = -1
+	c.State.Pid = 0
 	c.State.ExitCode = exitCode
 	c.State.Error = errMsg
 	c.setStatusFlags(types.StatusStopped)
@@ -117,7 +117,7 @@ func (c *Container) SetStatusExited(exitCode int64, errMsg string) {
 	defer c.Unlock()
 	c.State.Status = types.StatusExited
 	c.State.FinishedAt = time.Now().UTC().Format(utils.TimeLayout)
-	c.State.Pid = -1
+	c.State.Pid = 0
 	c.State.ExitCode = exitCode
 	c.State.Error = errMsg
 	c.setStatusFlags(types.StatusExited)

test/cli_stop_test.go

@@ -126,3 +126,36 @@ func (suite *PouchStopSuite) TestStopMultiContainers(c *check.C) {
 	c.Assert(string(result[0].State.Status), check.Equals, "stopped")
 
 }
+
+// TestStopPidValue ensure stopped container's pid is 0
+func (suite *PouchStopSuite) TestStopPidValue(c *check.C) {
+	name := "test-stop-pid-value"
+
+	command.PouchRun("run", "-d", "--name", name, busyboxImage, "top").Assert(c, icmd.Success)
+	defer DelContainerForceMultyTime(c, name)
+
+	// test stop a created container
+	command.PouchRun("stop", name).Assert(c, icmd.Success)
+
+	output := command.PouchRun("inspect", name).Stdout()
+	result := []types.ContainerJSON{}
+	if err := json.Unmarshal([]byte(output), &result); err != nil {
+		c.Errorf("failed to decode inspect output: %v", err)
+	}
+	c.Assert(result[0].State.Pid, check.Equals, int64(0))
+}
+
+// TestAutoStopPidValue ensure stopped container's pid is 0
+func (suite *PouchStopSuite) TestAutoStopPidValue(c *check.C) {
+	name := "test-auto-stop-pid-value"
+
+	command.PouchRun("run", "--name", name, busyboxImage, "echo", "hi").Assert(c, icmd.Success)
+	defer DelContainerForceMultyTime(c, name)
+
+	output := command.PouchRun("inspect", name).Stdout()
+	result := []types.ContainerJSON{}
+	if err := json.Unmarshal([]byte(output), &result); err != nil {
+		c.Errorf("failed to decode inspect output: %v", err)
+	}
+	c.Assert(result[0].State.Pid, check.Equals, int64(0))
+}