Support mknod API

Gluster supports the mknod(2) API to create special files such as
character and block devices. Add it to the "gfapi.Volume" class.

Change-Id: Ie62245441997111b0cf6e44b2a14a1ad7b6d7d56
Signed-off-by: Michael Hanselmann <public@hansmi.ch>

2 files changed, 21 insertions, 0 deletions

diff --git a/test/functional/libgfapi-python-tests.py b/test/functional/libgfapi-python-tests.py
index be2801f..a699d8c 100644
--- a/test/functional/libgfapi-python-tests.py
+++ b/test/functional/libgfapi-python-tests.py
@@ -815,6 +815,13 @@ class FileOpsTest(unittest.TestCase):
         self.assertEqual(src_stat.st_mode, dest_stat.st_mode)
         self.assertEqual(src_stat.st_mtime, dest_stat.st_mtime)
 
+    def test_mknod(self):
+        self.vol.mknod("dev", stat.S_IFCHR | 0o644, os.makedev(1, 3))
+        st = self.vol.stat("dev")
+        self.assertTrue(stat.S_ISCHR(st.st_mode))
+        self.assertEqual(os.major(st.st_rdev), 1)
+        self.assertEqual(os.minor(st.st_rdev), 3)
+
 
 class DirOpsTest(unittest.TestCase):
 
diff --git a/test/unit/gluster/test_gfapi.py b/test/unit/gluster/test_gfapi.py
index d35d7e1..a8c0035 100644
--- a/test/unit/gluster/test_gfapi.py
+++ b/test/unit/gluster/test_gfapi.py
@@ -1188,3 +1188,17 @@ class TestVolume(unittest.TestCase):
                          int(mtime))
         self.assertEqual(mock_glfs_utimens.call_args[0][2][1].tv_nsec,
                          int(math.modf(mtime)[0] * 1e9))
+
+    def test_mknod_success(self):
+        mock_glfs_mknod = Mock()
+        mock_glfs_mknod.return_value = 0
+
+        with patch("gluster.gfapi.api.glfs_mknod", mock_glfs_mknod):
+            self.vol.mknod("testdev", 0o644, os.makedev(1, 3))
+
+    def test_mknod_fail_exception(self):
+        mock_glfs_mknod = Mock()
+        mock_glfs_mknod.return_value = -1
+
+        with patch("gluster.gfapi.api.glfs_mknod", mock_glfs_mknod):
+            self.assertRaises(OSError, self.vol.mknod, "testdev", 0o644, 0)