Re: [PATCH libvirt v1] conf: verify for duplicate hostdevs

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ping

On 6/18/21 12:46 PM, Shalini Chellathurai Saroja wrote:
It is possible to define/edit(in shut off state) a domain XML with
same hostdev device repeated more than once, as shown below. This
behavior is not expected. So, this patch fixes it.

vser1:
<domain type='kvm'>
[...]
   <devices>
  [...]
     <hostdev mode='subsystem' type='mdev' managed='no' model='vfio-ccw'>
       <source>
         <address uuid='8e782fea-e5f4-45fa-a0f9-024cf66e5009'/>
       </source>
       <address type='ccw' cssid='0xfe' ssid='0x0' devno='0x0005'/>
     </hostdev>
     <hostdev mode='subsystem' type='mdev' managed='no' model='vfio-ccw'>
       <source>
         <address uuid='8e782fea-e5f4-45fa-a0f9-024cf66e5009'/>
       </source>
       <address type='ccw' cssid='0xfe' ssid='0x0' devno='0x0006'/>
     </hostdev>
[...]
   </devices>
</domain>

$ virsh define vser1
Domain 'vser1' defined from vser1

Signed-off-by: Shalini Chellathurai Saroja <shalini@xxxxxxxxxxxxx>
Reviewed-by: Bjoern Walk <bwalk@xxxxxxxxxxxxx>
Reviewed-by: Boris Fiuczynski <fiuczy@xxxxxxxxxxxxx>
---
  src/conf/domain_conf.c                        |  2 +-
  src/conf/domain_conf.h                        |  2 +
  src/conf/domain_validate.c                    | 21 ++++++++++
  src/libvirt_private.syms                      |  1 +
  .../hostdev-mdev-duplicate.err                |  1 +
  .../hostdev-mdev-duplicate.xml                | 41 +++++++++++++++++++
  .../hostdev-pci-duplicate.err                 |  1 +
  .../hostdev-pci-duplicate.xml                 | 40 ++++++++++++++++++
  .../hostdev-scsi-duplicate.err                |  1 +
  .../hostdev-scsi-duplicate.xml                | 40 ++++++++++++++++++
  .../hostdev-usb-duplicate.err                 |  1 +
  .../hostdev-usb-duplicate.xml                 | 40 ++++++++++++++++++
  tests/qemuxml2argvtest.c                      |  8 ++++
  13 files changed, 198 insertions(+), 1 deletion(-)
  create mode 100644 tests/qemuxml2argvdata/hostdev-mdev-duplicate.err
  create mode 100644 tests/qemuxml2argvdata/hostdev-mdev-duplicate.xml
  create mode 100644 tests/qemuxml2argvdata/hostdev-pci-duplicate.err
  create mode 100644 tests/qemuxml2argvdata/hostdev-pci-duplicate.xml
  create mode 100644 tests/qemuxml2argvdata/hostdev-scsi-duplicate.err
  create mode 100644 tests/qemuxml2argvdata/hostdev-scsi-duplicate.xml
  create mode 100644 tests/qemuxml2argvdata/hostdev-usb-duplicate.err
  create mode 100644 tests/qemuxml2argvdata/hostdev-usb-duplicate.xml

diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index f65509d8..5746f69e 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -15369,7 +15369,7 @@ virDomainHostdevMatchCaps(virDomainHostdevDef *a,
  }
-static int
+int
  virDomainHostdevMatch(virDomainHostdevDef *a,
                        virDomainHostdevDef *b)
  {
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index f706c498..4d9d499b 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -3590,6 +3590,8 @@ virDomainHostdevDef *
  virDomainHostdevRemove(virDomainDef *def, size_t i);
  int virDomainHostdevFind(virDomainDef *def, virDomainHostdevDef *match,
                           virDomainHostdevDef **found);
+int virDomainHostdevMatch(virDomainHostdevDef *a,
+                          virDomainHostdevDef *b);
virDomainGraphicsListenDef *
  virDomainGraphicsGetListen(virDomainGraphicsDef *def, size_t i);
diff --git a/src/conf/domain_validate.c b/src/conf/domain_validate.c
index 2124d25d..df2ab473 100644
--- a/src/conf/domain_validate.c
+++ b/src/conf/domain_validate.c
@@ -1068,7 +1068,25 @@ virDomainDefDuplicateDiskInfoValidate(const virDomainDef *def)
      return 0;
  }
+static int
+virDomainDefDuplicateHostdevInfoValidate(const virDomainDef *def)
+{
+    size_t i;
+    size_t j;
+ for (i = 0; i < def->nhostdevs; i++) {
+        for (j = i + 1; j < def->nhostdevs; j++) {
+            if (virDomainHostdevMatch(def->hostdevs[i],
+                                      def->hostdevs[j])) {
+                virReportError(VIR_ERR_XML_ERROR, "%s",
+                    _("Hostdev already exists in the domain configuration"));
+                return -1;
+            }
+        }
+    }
+
+    return 0;
+}
/**
   * virDomainDefDuplicateDriveAddressesValidate:
@@ -1529,6 +1547,9 @@ virDomainDefValidateInternal(const virDomainDef *def,
      if (virDomainDefDuplicateDiskInfoValidate(def) < 0)
          return -1;
+ if (virDomainDefDuplicateHostdevInfoValidate(def) < 0)
+        return -1;
+
      if (virDomainDefDuplicateDriveAddressesValidate(def) < 0)
          return -1;
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index 2efa7876..f0d1b7b4 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -457,6 +457,7 @@ virDomainHostdevDefFree;
  virDomainHostdevDefNew;
  virDomainHostdevFind;
  virDomainHostdevInsert;
+virDomainHostdevMatch;
  virDomainHostdevModeTypeToString;
  virDomainHostdevRemove;
  virDomainHostdevSubsysPCIBackendTypeToString;
diff --git a/tests/qemuxml2argvdata/hostdev-mdev-duplicate.err b/tests/qemuxml2argvdata/hostdev-mdev-duplicate.err
new file mode 100644
index 00000000..590afd30
--- /dev/null
+++ b/tests/qemuxml2argvdata/hostdev-mdev-duplicate.err
@@ -0,0 +1 @@
+XML error: Hostdev already exists in the domain configuration
diff --git a/tests/qemuxml2argvdata/hostdev-mdev-duplicate.xml b/tests/qemuxml2argvdata/hostdev-mdev-duplicate.xml
new file mode 100644
index 00000000..1c5e3263
--- /dev/null
+++ b/tests/qemuxml2argvdata/hostdev-mdev-duplicate.xml
@@ -0,0 +1,41 @@
+<domain type='qemu'>
+  <name>QEMUGuest2</name>
+  <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
+  <memory unit='KiB'>219136</memory>
+  <currentMemory unit='KiB'>219136</currentMemory>
+  <vcpu placement='static'>1</vcpu>
+  <os>
+    <type arch='i686' machine='pc'>hvm</type>
+    <boot dev='hd'/>
+  </os>
+  <clock offset='utc'/>
+  <on_poweroff>destroy</on_poweroff>
+  <on_reboot>restart</on_reboot>
+  <on_crash>destroy</on_crash>
+  <devices>
+    <emulator>/usr/bin/qemu-system-i386</emulator>
+    <controller type='usb' index='0'>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
+    </controller>
+    <controller type='pci' index='0' model='pci-root'/>
+    <controller type='ide' index='0'>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
+    </controller>
+    <input type='mouse' bus='ps2'/>
+    <input type='keyboard' bus='ps2'/>
+    <audio id='1' type='none'/>
+    <hostdev mode='subsystem' type='mdev' managed='no' model='vfio-pci'>
+      <source>
+        <address uuid='53764d0e-85a0-42b4-af5c-2046b460b1dc'/>
+      </source>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
+    </hostdev>
+    <hostdev mode='subsystem' type='mdev' managed='no' model='vfio-pci'>
+      <source>
+        <address uuid='53764d0e-85a0-42b4-af5c-2046b460b1dc'/>
+      </source>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x1'/>
+    </hostdev>
+    <memballoon model='none'/>
+  </devices>
+</domain>
diff --git a/tests/qemuxml2argvdata/hostdev-pci-duplicate.err b/tests/qemuxml2argvdata/hostdev-pci-duplicate.err
new file mode 100644
index 00000000..590afd30
--- /dev/null
+++ b/tests/qemuxml2argvdata/hostdev-pci-duplicate.err
@@ -0,0 +1 @@
+XML error: Hostdev already exists in the domain configuration
diff --git a/tests/qemuxml2argvdata/hostdev-pci-duplicate.xml b/tests/qemuxml2argvdata/hostdev-pci-duplicate.xml
new file mode 100644
index 00000000..c744fddf
--- /dev/null
+++ b/tests/qemuxml2argvdata/hostdev-pci-duplicate.xml
@@ -0,0 +1,40 @@
+<domain type='qemu'>
+  <name>QEMUGuest2</name>
+  <uuid>c7a5fdbd-edaf-9466-926a-d65c16db1809</uuid>
+  <memory unit='KiB'>219100</memory>
+  <currentMemory unit='KiB'>219100</currentMemory>
+  <vcpu placement='static'>1</vcpu>
+  <os>
+    <type arch='i686' machine='pc'>hvm</type>
+    <boot dev='hd'/>
+  </os>
+  <clock offset='utc'/>
+  <on_poweroff>destroy</on_poweroff>
+  <on_reboot>restart</on_reboot>
+  <on_crash>destroy</on_crash>
+  <devices>
+    <emulator>/usr/bin/qemu-system-i386</emulator>
+    <disk type='block' device='disk'>
+      <driver name='qemu' type='raw'/>
+      <source dev='/dev/HostVG/QEMUGuest2'/>
+      <target dev='hda' bus='ide'/>
+      <address type='drive' controller='0' bus='0' target='0' unit='0'/>
+    </disk>
+    <controller type='usb' index='0'/>
+    <controller type='ide' index='0'/>
+    <controller type='pci' index='0' model='pci-root'/>
+    <input type='mouse' bus='ps2'/>
+    <input type='keyboard' bus='ps2'/>
+    <hostdev mode='subsystem' type='pci' managed='yes'>
+      <source>
+        <address domain='0x0000' bus='0x06' slot='0x12' function='0x5'/>
+      </source>
+    </hostdev>
+    <hostdev mode='subsystem' type='pci' managed='yes'>
+      <source>
+        <address domain='0x0000' bus='0x06' slot='0x12' function='0x5'/>
+      </source>
+    </hostdev>
+    <memballoon model='none'/>
+  </devices>
+</domain>
diff --git a/tests/qemuxml2argvdata/hostdev-scsi-duplicate.err b/tests/qemuxml2argvdata/hostdev-scsi-duplicate.err
new file mode 100644
index 00000000..590afd30
--- /dev/null
+++ b/tests/qemuxml2argvdata/hostdev-scsi-duplicate.err
@@ -0,0 +1 @@
+XML error: Hostdev already exists in the domain configuration
diff --git a/tests/qemuxml2argvdata/hostdev-scsi-duplicate.xml b/tests/qemuxml2argvdata/hostdev-scsi-duplicate.xml
new file mode 100644
index 00000000..ea367de3
--- /dev/null
+++ b/tests/qemuxml2argvdata/hostdev-scsi-duplicate.xml
@@ -0,0 +1,40 @@
+<domain type='qemu'>
+  <name>QEMUGuest2</name>
+  <uuid>c7a5fdbd-edaf-9466-926a-d65c16db1809</uuid>
+  <memory unit='KiB'>219100</memory>
+  <currentMemory unit='KiB'>219100</currentMemory>
+  <vcpu placement='static'>1</vcpu>
+  <os>
+    <type arch='i686' machine='pc'>hvm</type>
+    <boot dev='hd'/>
+  </os>
+  <clock offset='utc'/>
+  <on_poweroff>destroy</on_poweroff>
+  <on_reboot>restart</on_reboot>
+  <on_crash>destroy</on_crash>
+  <devices>
+    <emulator>/usr/bin/qemu-system-i386</emulator>
+    <disk type='block' device='disk'>
+      <source dev='/dev/HostVG/QEMUGuest2'/>
+      <target dev='hda' bus='ide'/>
+      <address type='drive' controller='0' bus='0' target='0' unit='0'/>
+    </disk>
+    <controller type='scsi' index='0' model='virtio-scsi'/>
+    <controller type='usb' index='0'/>
+    <controller type='ide' index='0'/>
+    <controller type='pci' index='0' model='pci-root'/>
+    <hostdev mode='subsystem' type='scsi' managed='yes'>
+      <source>
+        <adapter name='scsi_host0'/>
+        <address bus='0' target='0' unit='0'/>
+      </source>
+    </hostdev>
+    <hostdev mode='subsystem' type='scsi' managed='yes'>
+      <source>
+        <adapter name='scsi_host0'/>
+        <address bus='0' target='0' unit='0'/>
+      </source>
+    </hostdev>
+    <memballoon model='virtio'/>
+  </devices>
+</domain>
diff --git a/tests/qemuxml2argvdata/hostdev-usb-duplicate.err b/tests/qemuxml2argvdata/hostdev-usb-duplicate.err
new file mode 100644
index 00000000..590afd30
--- /dev/null
+++ b/tests/qemuxml2argvdata/hostdev-usb-duplicate.err
@@ -0,0 +1 @@
+XML error: Hostdev already exists in the domain configuration
diff --git a/tests/qemuxml2argvdata/hostdev-usb-duplicate.xml b/tests/qemuxml2argvdata/hostdev-usb-duplicate.xml
new file mode 100644
index 00000000..533a9059
--- /dev/null
+++ b/tests/qemuxml2argvdata/hostdev-usb-duplicate.xml
@@ -0,0 +1,40 @@
+<domain type='qemu'>
+  <name>QEMUGuest1</name>
+  <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
+  <memory unit='KiB'>219136</memory>
+  <currentMemory unit='KiB'>219136</currentMemory>
+  <vcpu placement='static'>1</vcpu>
+  <os>
+    <type arch='i686' machine='pc'>hvm</type>
+    <boot dev='hd'/>
+  </os>
+  <clock offset='utc'/>
+  <on_poweroff>destroy</on_poweroff>
+  <on_reboot>restart</on_reboot>
+  <on_crash>destroy</on_crash>
+  <devices>
+    <emulator>/usr/bin/qemu-system-i386</emulator>
+    <disk type='block' device='disk'>
+      <driver name='qemu' type='raw'/>
+      <source dev='/dev/HostVG/QEMUGuest1'/>
+      <target dev='hda' bus='ide'/>
+      <address type='drive' controller='0' bus='0' target='0' unit='0'/>
+    </disk>
+    <controller type='usb' index='0'/>
+    <controller type='ide' index='0'/>
+    <controller type='pci' index='0' model='pci-root'/>
+    <input type='mouse' bus='ps2'/>
+    <input type='keyboard' bus='ps2'/>
+    <hostdev mode='subsystem' type='usb' managed='no'>
+      <source>
+        <address bus='14' device='6'/>
+      </source>
+    </hostdev>
+    <hostdev mode='subsystem' type='usb' managed='no'>
+      <source>
+        <address bus='14' device='6'/>
+      </source>
+    </hostdev>
+    <memballoon model='none'/>
+  </devices>
+</domain>
diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c
index 7fed871c..b9f96532 100644
--- a/tests/qemuxml2argvtest.c
+++ b/tests/qemuxml2argvtest.c
@@ -1915,8 +1915,11 @@ mymain(void)
      DO_TEST("hostdev-usb-address", NONE);
      DO_TEST("hostdev-usb-address-device", NONE);
      DO_TEST("hostdev-usb-address-device-boot", NONE);
+    DO_TEST_PARSE_ERROR("hostdev-usb-duplicate", NONE);
      DO_TEST("hostdev-pci-address", QEMU_CAPS_DEVICE_VFIO_PCI);
      DO_TEST("hostdev-pci-address-device", QEMU_CAPS_DEVICE_VFIO_PCI);
+    DO_TEST_PARSE_ERROR("hostdev-pci-duplicate",
+                        QEMU_CAPS_DEVICE_VFIO_PCI);
      DO_TEST("hostdev-vfio",
              QEMU_CAPS_DEVICE_VFIO_PCI);
      DO_TEST("hostdev-vfio-multidomain",
@@ -1927,6 +1930,8 @@ mymain(void)
              QEMU_CAPS_DEVICE_VFIO_PCI);
      DO_TEST_PARSE_ERROR("hostdev-mdev-invalid-target-address",
              QEMU_CAPS_DEVICE_VFIO_PCI);
+    DO_TEST_PARSE_ERROR("hostdev-mdev-duplicate",
+                        QEMU_CAPS_DEVICE_VFIO_PCI);
      DO_TEST_CAPS_LATEST("hostdev-mdev-display-spice-opengl");
      DO_TEST_CAPS_LATEST("hostdev-mdev-display-spice-egl-headless");
      DO_TEST_CAPS_LATEST("hostdev-mdev-display-vnc");
@@ -2856,6 +2861,9 @@ mymain(void)
              QEMU_CAPS_VIRTIO_SCSI, QEMU_CAPS_DEVICE_VHOST_SCSI,
              QEMU_CAPS_DEVICE_PCIE_ROOT_PORT,
              QEMU_CAPS_VIRTIO_PCI_DISABLE_LEGACY);
+    DO_TEST_PARSE_ERROR("hostdev-scsi-duplicate",
+                        QEMU_CAPS_VIRTIO_SCSI,
+                        QEMU_CAPS_DEVICE_VHOST_SCSI);
DO_TEST_CAPS_VER("mlock-on", "3.0.0");
      DO_TEST_CAPS_VER("mlock-off", "3.0.0");

--
Kind regards
Shalini Chellathurai Saroja
Linux on Z and Virtualization Development
Vorsitzende des Aufsichtsrats: Gregor Pillen
Geschäftsführung: Dirk Wittkopp
Sitz der Gesellschaft: Böblingen
Registergericht: Amtsgericht Stuttgart, HRB 243294





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