Fix handling with full access / blocked devices (#2581)

* Fix handling with full access / blocked devices

* address comment

* Use name

* Add validation warning

* add GPIO check too

* remove warning

* return directly

* fix tests

tests/hardware/test_disk.py

@@ -0,0 +1,81 @@
+"""Test hardware utils."""
+# pylint: disable=protected-access
+from pathlib import Path
+from unittest.mock import patch
+
+from supervisor.hardware.data import Device
+
+
+def test_system_partition(coresys):
+    """Test if it is a system partition."""
+    disk = Device(
+        "sda0",
+        Path("/dev/sda0"),
+        Path("/sys/bus/usb/001"),
+        "block",
+        [],
+        {"MAJOR": "5", "MINOR": "10"},
+    )
+
+    assert not coresys.hardware.disk.is_system_partition(disk)
+
+    disk = Device(
+        "sda0",
+        Path("/dev/sda0"),
+        Path("/sys/bus/usb/001"),
+        "block",
+        [],
+        {"MAJOR": "5", "MINOR": "10", "ID_FS_LABEL": "hassos-overlay"},
+    )
+
+    assert coresys.hardware.disk.is_system_partition(disk)
+
+
+def test_free_space(coresys):
+    """Test free space helper."""
+    with patch("shutil.disk_usage", return_value=(42, 42, 2 * (1024.0 ** 3))):
+        free = coresys.hardware.disk.get_disk_free_space("/data")
+
+    assert free == 2.0
+
+
+def test_total_space(coresys):
+    """Test total space helper."""
+    with patch("shutil.disk_usage", return_value=(10 * (1024.0 ** 3), 42, 42)):
+        total = coresys.hardware.disk.get_disk_total_space("/data")
+
+    assert total == 10.0
+
+
+def test_used_space(coresys):
+    """Test used space helper."""
+    with patch("shutil.disk_usage", return_value=(42, 8 * (1024.0 ** 3), 42)):
+        used = coresys.hardware.disk.get_disk_used_space("/data")
+
+    assert used == 8.0
+
+
+def test_get_mountinfo(coresys):
+    """Test mountinfo helper."""
+    mountinfo = coresys.hardware.disk._get_mountinfo("/proc")
+    assert mountinfo[4] == "/proc"
+
+
+def test_get_mount_source(coresys):
+    """Test mount source helper."""
+    # For /proc the mount source is known to be "proc"...
+    mount_source = coresys.hardware.disk._get_mount_source("/proc")
+    assert mount_source == "proc"
+
+
+def test_try_get_emmc_life_time(coresys, tmp_path):
+    """Test eMMC life time helper."""
+    fake_life_time = tmp_path / "fake-mmcblk0-lifetime"
+    fake_life_time.write_text("0x01 0x02\n")
+
+    with patch(
+        "supervisor.hardware.disk._BLOCK_DEVICE_EMMC_LIFE_TIME",
+        str(tmp_path / "fake-{}-lifetime"),
+    ):
+        value = coresys.hardware.disk._try_get_emmc_life_time("mmcblk0")
+    assert value == 20.0