replease RemoveAll of SharedDir with Remove

lei@ubuntu:/root/ws/src/hyper$ git diff
diff --git a/qemu/context.go b/qemu/context.go
index 2a1c096..9e64cfc 100644
--- a/qemu/context.go
+++ b/qemu/context.go
@@ -65,7 +65,7 @@ type VmContext struct {
        timer   *time.Timer
        process *os.Process
        lock    *sync.Mutex //protect update of context
-       wg      *sync.WaitGroup
+       wg      *sync.WaitGroup
 }

 type stateHandler func(ctx *VmContext, event QemuEvent)
@@ -98,7 +98,7 @@ func initContext(id string, hub chan QemuEvent, client chan *types.QemuResponse,
        }
        defer func() {
                if err != nil {
-                       os.RemoveAll(homeDir)
+                       os.Remove(homeDir)
                }
        }()

@@ -224,7 +224,7 @@ func (ctx *VmContext) Close() {
        close(ctx.qmp)
        close(ctx.vm)
        close(ctx.wdt)
-       os.RemoveAll(ctx.shareDir)
+       os.Remove(ctx.shareDir)
        ctx.handler = nil
        ctx.current = "None"
 }
@@ -298,7 +298,7 @@ func (ctx *VmContext) QemuArguments() []string {

 // InitDeviceContext will init device info in context
 func (ctx *VmContext) InitDeviceContext(spec *pod.UserPod, wg *sync.WaitGroup,
-                                       cInfo []*ContainerInfo, vInfo []*VolumeInfo) {
+       cInfo []*ContainerInfo, vInfo []*VolumeInfo) {

        ctx.lock.Lock()
        defer ctx.lock.Unlock()
diff --git a/qemu/drive.go b/qemu/drive.go
index 393622f..cf41baa 100644
--- a/qemu/drive.go
+++ b/qemu/drive.go
@@ -2,6 +2,7 @@ package qemu

 import (
        "fmt"
+       "os"
        "os/exec"
        "path"
        "strings"
@@ -71,6 +72,9 @@ func UmountVolume(shareDir, volPath string, name string, hub chan QemuEvent) {
                        success = true
                }
        }
+       if success == true {
+               os.Remove(mount)
+       }
        // After umount that device, we need to delete it
        hub <- &VolumeUnmounted{Name: name, Success: success}
 }