filesystem_device: test usage for unprivileged users

Add new test cases checking that non-root users can mount
and use a host directory.

Variants:
2 vms, 1 filesystem
1 vm, 1 filesystem
1 vm, 2 filesystems

Notes:
1. use wait_for_serial login because the unprivileged user's VMs
   are created with interface type 'user' per default, so there's
   no vnet nic and therefore wait_for_login can't get the address
2. Due to 1. it's better to use the 'safe' command functions to avoid
   timeouts because there might be kernel messages breaking the
   output scan.
3. For hugepages, the unprivileged user needs access to a hugetlbfs
   and update their local libvirt configuration. After updating
   the configuration, the process needs to be killed to force
   the daemon to be loaded with the new configuration. This is
   expected.
4. Make sure to close and reopen sessions for the virsh instance
   of the unprivileged user to avoid running into issues when setting
   up hugepages.
5. virsh_sysinfo: update reference after change in avocado-vt that
   this test implementation depends on.

Signed-off-by: Sebastian Mitterle <[email protected]>

libvirt/tests/cfg/virtual_device/filesystem_device_unprivileged.cfg

@@ -0,0 +1,35 @@
+- virtual_devices.filesystem_device_unprivileged:
+    type = filesystem_device_unprivileged
+    # 10.0.0-6
+    func_supported_since_libvirt_ver = (10, 0, 0)
+    take_regular_screendumps = "no"
+    start_vm = no
+    vcpus_per_cell = 2
+    extra_hugepages = 128
+    test_user = test
+    test_passwd = test
+    pseries:
+        vcpus_per_cell = 5
+    aarch64:
+        extra_hugepages = 0
+    s390-virtio:
+        with_numa = no
+    variants plugmode:
+        - hotplug:
+        - coldplug:
+    variants:
+        - one_guest:
+              unpr_vms = unpr-vm
+        - two_guests:
+              unpr_vms = unpr-vm,unpr-vm2
+    variants memorybacking:
+        - with_hugepages:
+              s390-virtio:
+                  kvm_module_parameters = hpage=1
+        - with_memfd:
+        - with_shm:
+    variants:
+        - one_fs:
+              fs_dicts = [{'accessmode': 'passthrough',  'source': {'dir': '/tmp/dir1'}, "target": {'dir': 'mount_tag1'}, 'binary': {'path':'/usr/libexec/virtiofsd', 'lock_posix':'off','flock':'off', 'sandbox_mode':'namespace', 'xattr':'on', 'cache_mode':'none'}, 'driver': {'type': 'virtiofs', 'queue':'1024'}}]
+        - two_fs:
+              fs_dicts = [{'accessmode': 'passthrough',  'source': {'dir': '/tmp/dir1'}, "target": {'dir': 'mount_tag1'}, 'binary': {'lock_posix':'off','flock':'off', 'sandbox_mode':'namespace'}, 'driver': {'type': 'virtiofs'}}, {'accessmode': 'passthrough',  'source': {'dir': '/tmp/dir2'}, "target": {'dir': 'mount_tag2'}, 'binary': {'lock_posix':'off','flock':'off', 'sandbox_mode':'namespace', 'xattr':'on', 'cache_mode':'none'}, 'driver': {'type': 'virtiofs'}}]

libvirt/tests/src/virsh_cmd/host/virsh_sysinfo.py

@@ -60,7 +60,7 @@ def run(test, params, env):
             dmidecode_version = get_processor_version()
             if dmidecode_version:
                 # Get processor version from result
-                sysinfo_xml = libvirt_xml.SysinfoXML()
+                sysinfo_xml = libvirt_xml.VMSysinfoXML()
                 sysinfo_xml['xml'] = output
                 sysinfo_xml.xmltreefile.write()