changed default value of getenvint to 0. fix tests

Docker-DCO-1.1-Signed-off-by: Victor Vieux <victor.vieux@docker.com> (github: vieux)

api.go

@@ -584,7 +584,11 @@ func postContainersRestart(srv *Server, version float64, w http.ResponseWriter,
 		return fmt.Errorf("Missing parameter")
 	}
 	job := srv.Eng.Job("restart", vars["name"])
-	job.Setenv("t", r.Form.Get("t"))
+	if r.Form.Get("t") == "" {
+		job.Setenv("t", "-1")
+	} else {
+		job.Setenv("t", r.Form.Get("t"))
+	}
 	if err := job.Run(); err != nil {
 		return err
 	}
@@ -652,7 +656,11 @@ func postContainersStop(srv *Server, version float64, w http.ResponseWriter, r *
 		return fmt.Errorf("Missing parameter")
 	}
 	job := srv.Eng.Job("stop", vars["name"])
-	job.Setenv("t", r.Form.Get("t"))
+	if r.Form.Get("t") == "" {
+		job.Setenv("t", "-1")
+	} else {
+		job.Setenv("t", r.Form.Get("t"))
+	}
 	if err := job.Run(); err != nil {
 		return err
 	}

config.go

@@ -43,7 +43,7 @@ func DaemonConfigFromJob(job *engine.Job) *DaemonConfig {
 	} else {
 		config.BridgeIface = DefaultNetworkBridge
 	}
-	if mtu := job.GetenvInt("Mtu"); mtu != -1 {
+	if mtu := job.GetenvInt("Mtu"); mtu != 0 {
 		config.Mtu = mtu
 	} else {
 		config.Mtu = DefaultNetworkMtu

engine/env.go

@@ -60,7 +60,7 @@ func (env *Env) GetInt64(key string) int64 {
 	s := strings.Trim(env.Get(key), " \t")
 	val, err := strconv.ParseInt(s, 10, 64)
 	if err != nil {
-		return -1
+		return 0
 	}
 	return val
 }

engine/env_test.go

@@ -62,7 +62,7 @@ func TestSetenvInt(t *testing.T) {
 	if val := job.GetenvInt("bar"); val != 42 {
 		t.Fatalf("GetenvInt returns incorrect value: %d", val)
 	}
-	if val := job.GetenvInt("nonexistent"); val != -1 {
+	if val := job.GetenvInt("nonexistent"); val != 0 {
 		t.Fatalf("GetenvInt returns incorrect value: %d", val)
 	}
 }

server.go

@@ -1083,7 +1083,7 @@ func (srv *Server) Containers(job *engine.Job) engine.Status {
 	}, -1)
 
 	for _, container := range srv.runtime.List() {
-		if !container.State.IsRunning() && !all && n == -1 && since == "" && before == "" {
+		if !container.State.IsRunning() && !all && n <= 0 && since == "" && before == "" {
 			continue
 		}
 		if before != "" && !foundBefore {
@@ -1092,7 +1092,7 @@ func (srv *Server) Containers(job *engine.Job) engine.Status {
 			}
 			continue
 		}
-		if displayed == n {
+		if n > 0 && displayed == n {
 			break
 		}
 		if container.ID == since || utils.TruncateID(container.ID) == since {
@@ -1742,7 +1742,7 @@ func (srv *Server) ContainerCreate(job *engine.Job) engine.Status {
 		return engine.StatusErr
 	}
 	config := ContainerConfigFromJob(job)
-	if config.Memory > 0 && config.Memory < 524288 {
+	if config.Memory != 0 && config.Memory < 524288 {
 		job.Errorf("Minimum memory limit allowed is 512k")
 		return engine.StatusErr
 	}