feat: get_system_identity for matching a host to its BMC (0.7.0)

Mixes in napalm-device-types 4.9's SystemIdentityMixin: the host's
SMBIOS system UUID, product serial and board serial, read as root on an
exec channel, vendor placeholders empty. netOrk links a server's BMC to
the host on these.

CHANGELOG.md

@@ -7,6 +7,13 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Added
+
+- `get_system_identity()` (napalm-device-types 4.9 `SystemIdentityMixin`): the host's
+  SMBIOS system UUID, product serial and board serial, read as root on an exec channel,
+  vendor placeholders empty. netOrk matches a server to its BMC on these. Requires
+  napalm-device-types 4.9.0 or later; version 0.7.0.
+
 ### Changed
 
 - Requires napalm-device-types 4.7.1 or later; version 0.6.0.

napalm_linux/linux.py

@@ -43,6 +43,7 @@ from napalm_device_types import (
     ListeningSocketsMixin,
     OpenSshServerMixin,
     OSDriver,
+    SystemIdentityMixin,
     SystemdServicesMixin,
     SystemdUnavailable,
     VirtualIpsMixin,
@@ -245,6 +246,7 @@ class LinuxDriver(
     KernelFactsMixin,
     ListeningSocketsMixin,
     VirtualIpsMixin,
+    SystemIdentityMixin,
     OpenSshServerMixin,
     SystemdServicesMixin,
     HostStatusMixin,
@@ -1131,6 +1133,11 @@ class LinuxDriver(
         """
         return self.run_command(command, privileged=privileged, timeout=60).stdout
 
+    def _run_system_identity_command(self, command: str, *, privileged: bool) -> str:
+        """The transport for ``SystemIdentityMixin.get_system_identity``: an exec channel,
+        as root, since ``product_uuid`` and ``product_serial`` are root's."""
+        return self.run_command(command, privileged=privileged, timeout=30).stdout
+
     # ------------------------------------------------------------------
     # OSDriver – package management
     # ------------------------------------------------------------------

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "napalm-linux"
-version = "0.6.0"
+version = "0.7.0"
 description = "NAPALM driver for generic Linux systems via SSH"
 readme = "README.md"
 requires-python = ">=3.9"
@@ -37,7 +37,7 @@ classifiers = [
 ]
 dependencies = [
     "napalm>=4.0",
-    "napalm-device-types>=4.7.1",
+    "napalm-device-types>=4.9.0",
     "netmiko>=4.0.0",
     "paramiko>=5.0.0",  # CVE-2026-44405
 ]

tests/test_linux.py

@@ -1725,6 +1725,39 @@ class TestGetListeningSockets:
         assert plain.startswith("sh -c '")
 
 
+# ---------------------------------------------------------------------------
+# get_system_identity (napalm-device-types SystemIdentityMixin)
+# ---------------------------------------------------------------------------
+
+
+class TestGetSystemIdentity:
+    """What ties a host to its BMC: SMBIOS UUID and serials, read as root on an exec
+    channel (product_uuid and product_serial are root's)."""
+
+    def test_it_reads_the_shared_command_as_root_on_an_exec_channel(self, driver):
+        from napalm_device_types import SYSTEM_IDENTITY_COMMAND, CommandResult, SystemIdentityMixin
+
+        assert isinstance(driver, SystemIdentityMixin)
+        calls = []
+
+        def run_command(command, *, privileged=False, timeout=60, stdin=None):
+            calls.append((command, privileged))
+            out = "IDBEGIN\n31303043-534D-C40C-7A72-6F1300000000\n0123456789\nZM155S026022\nIDEND\n"
+            return CommandResult(out, "", 0)
+
+        driver.run_command = run_command
+
+        identity = driver.get_system_identity()
+
+        assert identity == {
+            "system_uuid": "31303043-534d-c40c-7a72-6f1300000000",
+            "product_serial": "",  # Supermicro's placeholder
+            "board_serial": "ZM155S026022",
+        }
+        assert calls == [(SYSTEM_IDENTITY_COMMAND, True)]
+        driver._device.send_command.assert_not_called()
+
+
 # ---------------------------------------------------------------------------
 # get_virtual_ips (napalm-device-types VirtualIpsMixin)
 # ---------------------------------------------------------------------------