lib: abstract out sandbox for platforms

Signed-off-by: Vincent Batts <vbatts@hashbangbash.com>

lib/container_server.go

@@ -19,7 +19,6 @@ import (
 	"github.com/kubernetes-incubator/cri-o/pkg/storage"
 	"github.com/opencontainers/runc/libcontainer"
 	rspec "github.com/opencontainers/runtime-spec/specs-go"
-	"github.com/opencontainers/selinux/go-selinux"
 	"github.com/opencontainers/selinux/go-selinux/label"
 	"github.com/pkg/errors"
 	"github.com/sirupsen/logrus"
@@ -701,7 +700,7 @@ func (c *ContainerServer) AddSandbox(sb *sandbox.Sandbox) {
 	c.state.sandboxes.Add(sb.ID(), sb)
 
 	c.stateLock.Lock()
-	c.state.processLevels[selinux.NewContext(sb.ProcessLabel())["level"]]++
+	c.addSandboxPlatform(sb)
 	c.stateLock.Unlock()
 }
 
@@ -724,18 +723,9 @@ func (c *ContainerServer) HasSandbox(id string) bool {
 // RemoveSandbox removes a sandbox from the state store
 func (c *ContainerServer) RemoveSandbox(id string) {
 	sb := c.state.sandboxes.Get(id)
-	processLabel := sb.ProcessLabel()
-	level := selinux.NewContext(processLabel)["level"]
 
 	c.stateLock.Lock()
-	pl, ok := c.state.processLevels[level]
-	if ok {
-		c.state.processLevels[level] = pl - 1
-		if c.state.processLevels[level] == 0 {
-			label.ReleaseLabel(processLabel)
-			delete(c.state.processLevels, level)
-		}
-	}
+	c.removeSandboxPlatform(sb)
 	c.stateLock.Unlock()
 
 	c.state.sandboxes.Delete(id)

lib/container_server_linux.go

@@ -0,0 +1,26 @@
+// +build linux
+
+package lib
+
+import (
+	"github.com/kubernetes-incubator/cri-o/lib/sandbox"
+	selinux "github.com/opencontainers/selinux/go-selinux"
+	"github.com/opencontainers/selinux/go-selinux/label"
+)
+
+func (c *ContainerServer) addSandboxPlatform(sb *sandbox.Sandbox) {
+	c.state.processLevels[selinux.NewContext(sb.ProcessLabel())["level"]]++
+}
+
+func (c *ContainerServer) removeSandboxPlatform(sb *sandbox.Sandbox) {
+	processLabel := sb.ProcessLabel()
+	level := selinux.NewContext(processLabel)["level"]
+	pl, ok := c.state.processLevels[level]
+	if ok {
+		c.state.processLevels[level] = pl - 1
+		if c.state.processLevels[level] == 0 {
+			label.ReleaseLabel(processLabel)
+			delete(c.state.processLevels, level)
+		}
+	}
+}

lib/container_server_unsupported.go

@@ -0,0 +1,13 @@
+// +build !linux
+
+package lib
+
+import "github.com/kubernetes-incubator/cri-o/lib/sandbox"
+
+func (c *ContainerServer) addSandboxPlatform(sb *sandbox.Sandbox) {
+	// nothin' doin'
+}
+
+func (c *ContainerServer) removeSandboxPlatform(sb *sandbox.Sandbox) {
+	// nothin' doin'
+}