Re: [PATCH] vmx: Check serialX.vspc before serialX.fileName

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On Fri, Apr 26, 2024 at 11:47:36AM +0100, Richard W.M. Jones wrote:
On Thu, Apr 25, 2024 at 02:12:54PM +0200, Martin Kletzander wrote:
When using vSPC (Virtual Serial Port Concentrator) in vSphere the actual
address for it is saved in serialX.vspc in which case the
serialX.fileName is most probably something we can't get any useful
information from and we also fail during the parsing rendering any
dumpxml and similar tries unsuccessful.

Instead of parsing the vspc URL with something along the lines of
`virURIParse(vspc ? vspc : fileName)`, which could lead to us reporting
information that is very prune to misuse (the vSPC seemingly has a
protocol on top of the telnet connection; redefining the domain would
change the behaviour; the URL might have a fragment we are not saving;
etc.) or adding more XML knobs to indicate vSPC usage (which we would
not be able to configure; we'd have to properly error out everywhere;
etc.) let's just report dummy serial port that leads to nowhere.

Resolves: https://issues.redhat.com/browse/RHEL-32182
Signed-off-by: Martin Kletzander <mkletzan@xxxxxxxxxx>
---
 src/vmx/vmx.c                            | 12 +++
 tests/vmx2xmldata/esx-in-the-wild-13.vmx | 97 ++++++++++++++++++++++++
 tests/vmx2xmldata/esx-in-the-wild-13.xml | 55 ++++++++++++++
 tests/vmx2xmltest.c                      |  1 +
 4 files changed, 165 insertions(+)
 create mode 100644 tests/vmx2xmldata/esx-in-the-wild-13.vmx
 create mode 100644 tests/vmx2xmldata/esx-in-the-wild-13.xml

diff --git a/src/vmx/vmx.c b/src/vmx/vmx.c
index 5da67aae60d9..32074f62e14c 100644
--- a/src/vmx/vmx.c
+++ b/src/vmx/vmx.c
@@ -2975,6 +2975,9 @@ virVMXParseSerial(virVMXContext *ctx, virConf *conf, int port,
     char fileName_name[48] = "";
     g_autofree char *fileName = NULL;

+    char vspc_name[48] = "";
+    g_autofree char *vspc = NULL;
+
     char network_endPoint_name[48] = "";
     g_autofree char *network_endPoint = NULL;

@@ -2997,6 +3000,7 @@ virVMXParseSerial(virVMXContext *ctx, virConf *conf, int port,
     VMX_BUILD_NAME(startConnected);
     VMX_BUILD_NAME(fileType);
     VMX_BUILD_NAME(fileName);
+    VMX_BUILD_NAME(vspc);
     VMX_BUILD_NAME_EXTRA(network_endPoint, "network.endPoint");

     /* vmx:present */
@@ -3026,6 +3030,10 @@ virVMXParseSerial(virVMXContext *ctx, virConf *conf, int port,
     if (virVMXGetConfigString(conf, fileName_name, &fileName, true) < 0)
         goto cleanup;

+    /* vmx:fileName -> def:data.file.path */
+    if (virVMXGetConfigString(conf, vspc_name, &vspc, true) < 0)
+        goto cleanup;
+
     /* vmx:network.endPoint -> def:data.tcp.listen */
     if (virVMXGetConfigString(conf, network_endPoint_name, &network_endPoint,
                               true) < 0) {
@@ -3057,6 +3065,10 @@ virVMXParseSerial(virVMXContext *ctx, virConf *conf, int port,
         (*def)->target.port = port;
         (*def)->source->type = VIR_DOMAIN_CHR_TYPE_PIPE;
         (*def)->source->data.file.path = g_steal_pointer(&fileName);
+    } else if (STRCASEEQ(fileType, "network") && vspc) {
+        (*def)->target.port = port;
+        (*def)->source->type = VIR_DOMAIN_CHR_TYPE_FILE;
+        (*def)->source->data.file.path = g_strdup("/dev/null");
     } else if (STRCASEEQ(fileType, "network")) {
         (*def)->target.port = port;
         (*def)->source->type = VIR_DOMAIN_CHR_TYPE_TCP;
diff --git a/tests/vmx2xmldata/esx-in-the-wild-13.vmx b/tests/vmx2xmldata/esx-in-the-wild-13.vmx
new file mode 100644
index 000000000000..1016acab28d8
--- /dev/null
+++ b/tests/vmx2xmldata/esx-in-the-wild-13.vmx
@@ -0,0 +1,97 @@
+.encoding = "UTF-8"
+config.version = "8"
+virtualHW.version = "19"
+vmci0.present = "TRUE"
+floppy0.present = "FALSE"
+memSize = "1024"
+tools.upgrade.policy = "manual"
+sched.cpu.units = "mhz"
+vm.createDate = "1704946351823519"
+scsi0.virtualDev = "lsilogic"
+scsi0.present = "TRUE"
+scsi0:0.deviceType = "scsi-hardDisk"
+scsi0:0.fileName = "Test-Mig-VM-1 (01ce57d0-4e20-41a5-8b6c-bcbf49a032ec)_2.vmdk"
+sched.scsi0:0.shares = "normal"
+sched.scsi0:0.throughputCap = "off"
+scsi0:0.present = "TRUE"
+ethernet0.virtualDev = "vmxnet3"
+ethernet0.opaqueNetwork.id = "25c9a00e-dc60-4918-89b7-41c951988366"
+ethernet0.opaqueNetwork.type = "nsx.LogicalSwitch"
+ethernet0.shares = "normal"
+ethernet0.addressType = "static"
+ethernet0.address = "fa:16:3e:bb:2c:4a"
+ethernet0.externalId = "4b57523e-35af-4f8d-b050-1a7410e1a307"
+ethernet0.uptCompatibility = "TRUE"
+ethernet0.present = "TRUE"
+ethernet0.networkName = "Test"
+serial0.fileType = "network"
+serial0.fileName = "ZmVybmV0IGdBQUFBQUJrdFotaW8yclpkRXR6N3dBcDdyYkFMaWFUMVd4RENJSHgtUXpkTlMyTzRRejI3V192QVlOVUY3ZU1SOTNHZXJrN1dGb2stS0EybmpwWFQ4NjJNNlgwc2ZDdmNlOE50eFNhcU1XdlNBTmdhazQ1T1J3LUI5OEZsSDdwMDBZa2R6bWt4Y1Ax"
+serial0.vspc = "telnets://10.28.100.26:18979#thumbprint=18:F5:79:E5:73:A5:22:83:C0:57:B9:B4:FA:CE:60:19:F1:12:F5:7B"
+serial0.yieldOnMsrRead = "TRUE"
+serial0.present = "TRUE"
+displayName = "Test-Mig-VM-1 (01ce57d0-4e20-41a5-8b6c-bcbf49a032ec)"
+annotation = "name:Test-Mig-VM-1|0Auserid:962314ba515c48388a0e95c0961709ff|0Ausername:admin|0Aprojectid:b06b5f77b6bb442f85b1c67cff980ef9|0Aprojectname:MIS|0Aflavor:name:mig-test-flavor|0Aflavor:memory_mb:1024|0Aflavor:vcpus:1|0Aflavor:ephemeral_gb:0|0Aflavor:root_gb:10|0Aflavor:swap:0|0Aimageid:8b90d6fa-20ab-4adf-8015-aad3dddb246c|0Apackage:20.6.2|0A"
+guestOS = "other-64"
+toolScripts.afterPowerOn = "TRUE"
+toolScripts.afterResume = "TRUE"
+toolScripts.beforeSuspend = "TRUE"
+toolScripts.beforePowerOff = "TRUE"
+tools.syncTime = "FALSE"
+uuid.bios = "42 1e b4 58 54 48 fc 12-20 74 83 d5 e4 19 e1 38"
+vc.uuid = "01 ce 57 d0 4e 20 41 a5-8b 6c bc bf 49 a0 32 ec"
+sched.cpu.latencySensitivity = "normal"
+tools.guest.desktop.autolock = "FALSE"
+nvram = "Test-Mig-VM-1 (01ce57d0-4e20-41a5-8b6c-bcbf49a032ec).nvram"
+svga.present = "TRUE"
+pciBridge0.present = "TRUE"
+pciBridge4.present = "TRUE"
+pciBridge4.virtualDev = "pcieRootPort"
+pciBridge4.functions = "8"
+pciBridge5.present = "TRUE"
+pciBridge5.virtualDev = "pcieRootPort"
+pciBridge5.functions = "8"
+pciBridge6.present = "TRUE"
+pciBridge6.virtualDev = "pcieRootPort"
+pciBridge6.functions = "8"
+pciBridge7.present = "TRUE"
+pciBridge7.virtualDev = "pcieRootPort"
+pciBridge7.functions = "8"
+hpet0.present = "TRUE"
+vio.imageId = "8b90d6fa-20ab-4adf-8015-aad3dddb246c"
+nvp.vm-uuid = "01ce57d0-4e20-41a5-8b6c-bcbf49a032ec"
+nvp.iface-id.0 = "4b57523e-35af-4f8d-b050-1a7410e1a307"
+smbios.assetTag = "OpenTelekomCloud"
+root-disk-uuid = "6000C294-db10-e2c6-963f-e4371d3605e8"
+numa.autosize.cookie = "10012"
+numa.autosize.vcpu.maxPerVirtualNode = "1"
+pciBridge0.pciSlotNumber = "17"
+pciBridge4.pciSlotNumber = "21"
+pciBridge5.pciSlotNumber = "22"
+pciBridge6.pciSlotNumber = "23"
+pciBridge7.pciSlotNumber = "24"
+scsi0.pciSlotNumber = "16"
+ethernet0.pciSlotNumber = "160"
+vmotion.checkpointFBSize = "4194304"
+vmotion.checkpointSVGAPrimarySize = "4194304"
+vmotion.svga.mobMaxSize = "4194304"
+vmotion.svga.graphicsMemoryKB = "4096"
+monitor.phys_bits_used = "45"
+softPowerOff = "FALSE"
+ctkEnabled = "TRUE"
+scsi0:0.ctkEnabled = "TRUE"
+svga.guestBackedPrimaryAware = "TRUE"
+viv.moid = "bd916f5e-a90b-46db-98e8-ce974fef34f4:vm-29145:1NineJhqocLZEZ6JOxn/hLdjlihTelLVQGc8mmAj3nA="
+migrate.hostLog = "Test-Mig-VM-1 (01ce57d0-4e20-41a5-8b6c-bcbf49a032ec)-7cedc035.hlog"
+sched.cpu.min = "0"
+sched.cpu.shares = "normal"
+sched.mem.min = "0"
+sched.mem.minSize = "0"
+sched.mem.shares = "normal"
+migrate.encryptionMode = "opportunistic"
+ftcpt.ftEncryptionMode = "ftEncryptionOpportunistic"
+sched.swap.derivedName = "/vmfs/volumes/642eff9a-0df93507-cca5-5c6f69c57c70/Test-Mig-VM-1 (01ce57d0-4e20-41a5-8b6c-bcbf49a032ec)/Test-Mig-VM-1 (01ce57d0-4e20-41a5-8b6c-bcbf49a032ec)-69fcc9f7.vswp"
+uuid.location = "56 4d c2 6b 03 eb b2 44-eb 36 8a 83 de 3f bd b6"
+scsi0:0.redo = ""
+vmci0.id = "-468065992"
+cleanShutdown = "TRUE"
+vmxstats.filename = "Test-Mig-VM-1 (01ce57d0-4e20-41a5-8b6c-bcbf49a032ec).scoreboard"
diff --git a/tests/vmx2xmldata/esx-in-the-wild-13.xml b/tests/vmx2xmldata/esx-in-the-wild-13.xml
new file mode 100644
index 000000000000..689282747779
--- /dev/null
+++ b/tests/vmx2xmldata/esx-in-the-wild-13.xml
@@ -0,0 +1,55 @@
+<domain type='vmware'>
+  <name>Test-Mig-VM-1 (01ce57d0-4e20-41a5-8b6c-bcbf49a032ec)</name>
+  <uuid>421eb458-5448-fc12-2074-83d5e419e138</uuid>
+  <description>name:Test-Mig-VM-1
+userid:962314ba515c48388a0e95c0961709ff
+username:admin
+projectid:b06b5f77b6bb442f85b1c67cff980ef9
+projectname:MIS
+flavor:name:mig-test-flavor
+flavor:memory_mb:1024
+flavor:vcpus:1
+flavor:ephemeral_gb:0
+flavor:root_gb:10
+flavor:swap:0
+imageid:8b90d6fa-20ab-4adf-8015-aad3dddb246c
+package:20.6.2
+</description>
+  <memory unit='KiB'>1048576</memory>
+  <currentMemory unit='KiB'>1048576</currentMemory>
+  <vcpu placement='static'>1</vcpu>
+  <cputune>
+    <shares>1000</shares>
+  </cputune>
+  <os>
+    <type arch='x86_64'>hvm</type>
+  </os>
+  <clock offset='utc'/>
+  <on_poweroff>destroy</on_poweroff>
+  <on_reboot>restart</on_reboot>
+  <on_crash>destroy</on_crash>
+  <devices>
+    <disk type='file' device='disk'>
+      <source file='[datastore] directory/Test-Mig-VM-1 (01ce57d0-4e20-41a5-8b6c-bcbf49a032ec)_2.vmdk'/>
+      <target dev='sda' bus='scsi'/>
+      <address type='drive' controller='0' bus='0' target='0' unit='0'/>
+    </disk>
+    <controller type='scsi' index='0' model='lsilogic'/>
+    <interface type='bridge'>
+      <mac address='fa:16:3e:bb:2c:4a' type='static'/>
+      <source bridge='Test'/>
+      <model type='vmxnet3'/>
+    </interface>
+    <serial type='file'>
+      <source path='/dev/null'/>
+      <target port='0'/>
+    </serial>
+    <console type='file'>
+      <source path='/dev/null'/>
+      <target type='serial' port='0'/>
+    </console>
+    <video>
+      <model type='vmvga' vram='4096' primary='yes'/>
+    </video>
+  </devices>
+</domain>
diff --git a/tests/vmx2xmltest.c b/tests/vmx2xmltest.c
index 785eee6d3002..0fb5f13f72ce 100644
--- a/tests/vmx2xmltest.c
+++ b/tests/vmx2xmltest.c
@@ -263,6 +263,7 @@ mymain(void)
     DO_TEST("esx-in-the-wild-10");
     DO_TEST("esx-in-the-wild-11");
     DO_TEST("esx-in-the-wild-12");
+    DO_TEST("esx-in-the-wild-13");

     DO_TEST("gsx-in-the-wild-1");
     DO_TEST("gsx-in-the-wild-2");
--

From the point of view of virt-v2v:

ACK

I don't care if the path is /dev/null or nothing, as virt-v2v will
ignore the serial port.  Most important thing is not to fail.


So type="null" it is, thanks for the info.

Rich.

--
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming and virtualization blog: http://rwmj.wordpress.com
libguestfs lets you edit virtual machines.  Supports shell scripting,
bindings from many languages.  http://libguestfs.org

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