Volume binds for windows containers

client/allocdir/alloc_dir_unix.go

@@ -7,11 +7,20 @@ import (
 	"fmt"
 	"os"
 	"os/user"
+	"path/filepath"
 	"strconv"
 
 	"golang.org/x/sys/unix"
 )
 
+var (
+	//Path inside container for mounted directory shared across tasks in a task group.
+	SharedAllocContainerPath = filepath.Join("/", SharedAllocName)
+
+	//Path inside container for mounted directory for local storage.
+	TaskLocalContainerPath = filepath.Join("/", TaskLocal)
+)
+
 func (d *AllocDir) linkOrCopy(src, dst string, perm os.FileMode) error {
 	// Attempt to hardlink.
 	if err := os.Link(src, dst); err == nil {

client/allocdir/alloc_dir_windows.go

@@ -3,6 +3,15 @@ package allocdir
 import (
 	"errors"
 	"os"
+	"path/filepath"
+)
+
+var (
+	//Path inside container for mounted directory that is shared across tasks in a task group.
+	SharedAllocContainerPath = filepath.Join("c:\\", SharedAllocName)
+
+	//Path inside container for mounted directory for local storage.
+	TaskLocalContainerPath = filepath.Join("c:\\", TaskLocal)
 )
 
 func (d *AllocDir) linkOrCopy(src, dst string, perm os.FileMode) error {

client/driver/docker.go

@@ -321,8 +321,8 @@ func (d *DockerDriver) containerBinds(alloc *allocdir.AllocDir, task *structs.Ta
 		return nil, fmt.Errorf("Failed to find task local directory: %v", task.Name)
 	}
 
-	allocDirBind := fmt.Sprintf("%s:/%s", shared, allocdir.SharedAllocName)
-	taskLocalBind := fmt.Sprintf("%s:/%s", local, allocdir.TaskLocal)
+	allocDirBind := fmt.Sprintf("%s:%s", shared, allocdir.SharedAllocContainerPath)
+	taskLocalBind := fmt.Sprintf("%s:%s", local, allocdir.TaskLocalContainerPath)
 
 	if selinuxLabel := d.config.Read("docker.volumes.selinuxlabel"); selinuxLabel != "" {
 		allocDirBind = fmt.Sprintf("%s:%s", allocDirBind, selinuxLabel)
@@ -351,8 +351,8 @@ func (d *DockerDriver) createContainer(ctx *ExecContext, task *structs.Task,
 	}
 
 	// Set environment variables.
-	d.taskEnv.SetAllocDir(filepath.Join("/", allocdir.SharedAllocName))
-	d.taskEnv.SetTaskLocalDir(filepath.Join("/", allocdir.TaskLocal))
+	d.taskEnv.SetAllocDir(allocdir.SharedAllocContainerPath)
+	d.taskEnv.SetTaskLocalDir(allocdir.TaskLocalContainerPath)
 
 	config := &docker.Config{
 		Image:     driverConfig.ImageName,