Merge "Allow users to specify partition type in the MBR PTE"

diskimage_builder/block_device/tests/test_mbr.py

@@ -162,3 +162,13 @@ class TestMBR(tb.TestBase):
             "9 155648 176127 0x83 0x0 dos\n"
             "10 178176 198655 0x83 0x0 dos\n"
             "11 200704 221183 0x83 0x0 dos\n", output)
+
+    def test_pri_fat32_lba_partition(self):
+        """Creates a partition with a non-default 'type' and verifies."""
+
+        with MBR(self.image_path, TestMBR.disk_size_1G, 1024 * 1024) as mbr:
+            mbr.add_partition(True, False, TestMBR.disk_size_10M, 0x0c)
+
+        output = self._run_partx(self.image_path)
+        self.assertEqual(
+            "1 2048 22527 0xc 0x0 dos\n", output)

doc/source/user_guide/building_an_image.rst

@@ -323,6 +323,11 @@ size
    (percentage) numbers: in the later case the size is calculated
    based on the remaining free space.
 
+type (optional)
+   The partition type stored in the MBR partition table entry. The
+   default value is '0x83' (Linux Default partition). Any valid one
+   byte hexadecimal value may be specified here.
+
 Example:
 
 .. code-block:: yaml