support local cdroms

Local cdroms can now be added directly to the domain. See the
following example:

```hcl
resource "libvirt_domain" "test-domain" {
    name = "test"

    disk {
	file = "path/to/file.iso"
    }
}
```

Furthermore, a small Tiny Core Linux (TCL) ISO image has been added to
the testdata. This can be used for testing purposes.

Signed-off-by: Thomas Hipp <thipp@suse.de>

7 files changed, 49 insertions, 35 deletions

diff --git a/libvirt/disk_def.go b/libvirt/disk_def.go
index f4e4e86a..6e4cceea 100644
--- a/libvirt/disk_def.go
+++ b/libvirt/disk_def.go
@@ -24,21 +24,6 @@ func newDefDisk(i int) libvirtxml.DomainDisk {
 	}
 }
 
-func newCDROM() libvirtxml.DomainDisk {
-	return libvirtxml.DomainDisk{
-		Type:   "file",
-		Device: "cdrom",
-		Target: &libvirtxml.DomainDiskTarget{
-			Dev: "hda",
-			Bus: "ide",
-		},
-		Driver: &libvirtxml.DomainDiskDriver{
-			Name: "qemu",
-			Type: "raw",
-		},
-	}
-}
-
 func randomWWN(strlen int) string {
 	const chars = "abcdef0123456789"
 	result := make([]byte, strlen)
diff --git a/libvirt/disk_def_test.go b/libvirt/disk_def_test.go
index a6184cc6..d13d26d8 100644
--- a/libvirt/disk_def_test.go
+++ b/libvirt/disk_def_test.go
@@ -21,13 +21,3 @@ func TestDefaultDiskMarshall(t *testing.T) {
 		t.Fatalf("could not marshall this:\n%s", spew.Sdump(b))
 	}
 }
-
-func TestDefaultCDROMMarshall(t *testing.T) {
-	b := newCDROM()
-	buf := new(bytes.Buffer)
-	enc := xml.NewEncoder(buf)
-	enc.Indent("  ", "    ")
-	if err := enc.Encode(b); err != nil {
-		t.Fatalf("could not marshall this:\n%s", spew.Sdump(b))
-	}
-}
diff --git a/libvirt/resource_libvirt_domain.go b/libvirt/resource_libvirt_domain.go
index 95a7b7fe..95ac6c52 100644
--- a/libvirt/resource_libvirt_domain.go
+++ b/libvirt/resource_libvirt_domain.go
@@ -450,6 +450,24 @@ func resourceLibvirtDomainCreate(d *schema.ResourceData, meta interface{}) error
 			if !strings.HasSuffix(url.Path, ".qcow2") {
 				disk.Driver.Type = "raw"
 			}
+		} else if _, ok := diskMap["file"].(string); ok {
+			// support for local disks, e.g. CDs
+			disk.Type = "file"
+			disk.Source = &libvirtxml.DomainDiskSource{
+				File: diskMap["file"].(string),
+			}
+
+			if strings.HasSuffix(diskMap["file"].(string), ".iso") {
+				disk.Device = "cdrom"
+				disk.Target = &libvirtxml.DomainDiskTarget{
+					Dev: "hda",
+					Bus: "ide",
+				}
+				disk.Driver = &libvirtxml.DomainDiskDriver{
+					Name: "qemu",
+					Type: "raw",
+				}
+			}
 		}
 
 		disks = append(disks, disk)
@@ -899,7 +917,10 @@ func resourceLibvirtDomainRead(d *schema.ResourceData, meta interface{}) error {
 	// Emulator is the same as the default don't set it in domainDef
 	// or it will show as changed
 	d.Set("emulator", domainDef.Devices.Emulator)
-	var disks []map[string]interface{}
+	var (
+		disks []map[string]interface{}
+		disk  map[string]interface{}
+	)
 	for _, diskDef := range domainDef.Devices.Disks {
 		// network drives do not have a volume associated
 		if diskDef.Type == "network" {
@@ -914,10 +935,14 @@ func resourceLibvirtDomainRead(d *schema.ResourceData, meta interface{}) error {
 			if err != nil {
 				return err
 			}
-			disk := map[string]interface{}{
+			disk = map[string]interface{}{
 				"url": url.String(),
 			}
 			disks = append(disks, disk)
+		} else if diskDef.Device == "cdrom" {
+			disk = map[string]interface{}{
+				"file": diskDef.Source.File,
+			}
 		} else {
 			var virVol *libvirt.StorageVol
 			if len(diskDef.Source.File) > 0 {
@@ -942,11 +967,11 @@ func resourceLibvirtDomainRead(d *schema.ResourceData, meta interface{}) error {
 				return fmt.Errorf("Error retrieving volume for disk: %s", err)
 			}
 
-			disk := map[string]interface{}{
+			disk = map[string]interface{}{
 				"volume_id": virVolKey,
 			}
-			disks = append(disks, disk)
 		}
+		disks = append(disks, disk)
 	}
 	d.Set("disks", disks)
 	var filesystems []map[string]interface{}
diff --git a/libvirt/resource_libvirt_domain_test.go b/libvirt/resource_libvirt_domain_test.go
index 47c99ef5..43ce2478 100644
--- a/libvirt/resource_libvirt_domain_test.go
+++ b/libvirt/resource_libvirt_domain_test.go
@@ -290,9 +290,15 @@ func TestAccLibvirtDomainKernelInitrdCmdline(t *testing.T) {
 func TestAccLibvirtDomain_NetworkInterface(t *testing.T) {
 	var domain libvirt.Domain
 
+	currentDir, err := os.Getwd()
+	if err != nil {
+		t.Fatal("Unexpected error:", err)
+	}
+
 	var config = fmt.Sprintf(`
-	resource "libvirt_volume" "acceptance-test-volume" {
-		name = "terraform-test"
+	resource "libvirt_network" "acceptance-test-network" {
+		name      = "terraform-test"
+		addresses = ["10.17.3.0/24"]
 	}
 
 	resource "libvirt_domain" "acceptance-test-domain" {
@@ -303,11 +309,12 @@ func TestAccLibvirtDomain_NetworkInterface(t *testing.T) {
 		network_interface = {
 			network_name = "default"
 			mac          = "52:54:00:A9:F5:17"
+			wait_for_lease = 1
 		}
 		disk {
-			volume_id = "${libvirt_volume.acceptance-test-volume.id}"
+			file = "%s/testdata/tcl.iso"
 		}
-	}`)
+	}`, currentDir)
 
 	resource.Test(t, resource.TestCase{
 		PreCheck:     func() { testAccPreCheck(t) },
diff --git a/libvirt/testdata/tcl.iso b/libvirt/testdata/tcl.iso
new file mode 100644
index 00000000..303088d0
--- /dev/null
+++ b/libvirt/testdata/tcl.iso
diff --git a/travis/setup-guest b/travis/setup-guest
index 42568e81..0a671b2f 100755
--- a/travis/setup-guest
+++ b/travis/setup-guest
@@ -20,3 +20,6 @@ mkdir /pool-default
 chmod a+rwx /pool-default
 virsh pool-define pool.xml
 virsh pool-start default
+echo -e 'user = "root"\ngroup = "root"' >> /etc/libvirt/qemu.conf
+systemctl restart libvirtd
+
diff --git a/website/docs/r/domain.html.markdown b/website/docs/r/domain.html.markdown
index 01ed1fc3..ff9ab0a3 100644
--- a/website/docs/r/domain.html.markdown
+++ b/website/docs/r/domain.html.markdown
@@ -237,9 +237,9 @@ The `disk` block supports:
 
 * `volume_id` - (Optional) The volume id to use for this disk.
 * `url` - (Optional) The http url to use as the block device for this disk (read-only)
+* `file` - (Optional) The filename to use as the block device for this disk (read-only)
 
-While both `volume_id` and `url` are optional, it is intended that you use either a volume or a
-url.
+While `volume_id`, `url` and `file` are optional, it is intended that you use one of them.
 
 * `scsi` - (Optional) Use a scsi controller for this disk.  The controller
 model is set to `virtio-scsi`
@@ -268,6 +268,10 @@ resource "libvirt_domain" "domain1" {
   disk {
     url = "http://foo.com/install.iso"
   }
+
+  disk {
+    file = "/absolute/path/to/disk.iso"
+  }
 }
 ```