qemu: Do not start with source for removable disks if tray is open

This is similiar with physical world, one will be surprised if the
box starts with medium exists while the tray is open.

New tests are added, tests disk-{cdrom,floppy}-tray are for the qemu
supports "-device" flag, and disk-{cdrom,floppy}-no-device-cap are
for old qemu, i.e. which doesn't support "-device" flag.

src/qemu/qemu_command.c

@@ -1908,8 +1908,12 @@ qemuBuildDriveStr(virConnectPtr conn ATTRIBUTE_UNUSED,
     }
 
     /* disk->src is NULL when we use nbd disks */
-    if (disk->src || (disk->type == VIR_DOMAIN_DISK_TYPE_NETWORK &&
-                      disk->protocol == VIR_DOMAIN_DISK_PROTOCOL_NBD)) {
+    if ((disk->src ||
+        (disk->type == VIR_DOMAIN_DISK_TYPE_NETWORK &&
+         disk->protocol == VIR_DOMAIN_DISK_PROTOCOL_NBD)) &&
+        !((disk->device == VIR_DOMAIN_DISK_DEVICE_FLOPPY ||
+           disk->device == VIR_DOMAIN_DISK_DEVICE_CDROM) &&
+          disk->tray_status == VIR_DOMAIN_DISK_TRAY_OPEN)) {
         if (disk->type == VIR_DOMAIN_DISK_TYPE_DIR) {
             /* QEMU only supports magic FAT format for now */
             if (disk->driverType &&
@@ -4736,7 +4740,13 @@ qemuBuildCommandLine(virConnectPtr conn,
                 }
             }
 
-            virCommandAddArgList(cmd, dev, file, NULL);
+            /* Don't start with source if the tray is open for
+             * CDROM and Floppy device.
+             */
+            if (!((disk->device == VIR_DOMAIN_DISK_DEVICE_FLOPPY ||
+                   disk->device == VIR_DOMAIN_DISK_DEVICE_CDROM) &&
+                  disk->tray_status == VIR_DOMAIN_DISK_TRAY_OPEN))
+                virCommandAddArgList(cmd, dev, file, NULL);
             VIR_FREE(file);
         }
     }

tests/qemuxml2argvdata/qemuxml2argv-disk-cdrom-tray-no-device-cap.args

+LC_ALL=C PATH=/bin HOME=/home/test USER=test LOGNAME=test /usr/bin/qemu -S -M \
+pc -m 214 -smp 1 -nographic -monitor unix:/tmp/test-monitor,server,nowait \
+-no-acpi -boot c -hda /dev/HostVG/QEMUGuest1 -net none \
+-serial none -parallel none -usb

tests/qemuxml2argvdata/qemuxml2argv-disk-cdrom-tray-no-device-cap.xml

+<domain type='qemu'>
+  <name>QEMUGuest1</name>
+  <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
+  <memory>219100</memory>
+  <currentMemory>219100</currentMemory>
+  <vcpu>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</emulator>
+    <disk type='block' device='disk'>
+      <source dev='/dev/HostVG/QEMUGuest1'/>
+      <target dev='hda' bus='ide'/>
+      <address type='drive' controller='0' bus='0' target='0' unit='0'/>
+    </disk>
+    <disk type='file' device='cdrom'>
+      <source file='/root/boot.iso'/>
+      <target dev='hdc' bus='ide' tray='open'/>
+      <readonly/>
+      <address type='drive' controller='0' bus='1' target='0' unit='0'/>
+    </disk>
+    <controller type='usb' index='0'/>
+    <controller type='ide' index='0'/>
+    <memballoon model='virtio'/>
+  </devices>
+</domain>

tests/qemuxml2argvdata/qemuxml2argv-disk-cdrom-tray.args

+LC_ALL=C PATH=/bin HOME=/home/test USER=test LOGNAME=test \
+/usr/bin/qemu -S -M pc-0.13 -m 1024 -smp 1 -nographic -nodefaults \
+-monitor unix:/tmp/test-monitor,server,nowait -no-acpi -boot dc \
+-drive file=/var/lib/libvirt/images/f14.img,if=none,id=drive-virtio-disk0 \
+-device virtio-blk-pci,bus=pci.0,addr=0x4,drive=drive-virtio-disk0,id=virtio-disk0 \
+-drive file=/var/lib/libvirt/Fedora-14-x86_64-Live-KDE.iso,if=none,media=cdrom,id=drive-ide0-1-0 \
+-device ide-drive,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0 \
+-drive if=none,media=cdrom,id=drive-ide0-1-1 \
+-device ide-drive,bus=ide.1,unit=1,drive=drive-ide0-1-1,id=ide0-1-1 \
+-usb -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3

tests/qemuxml2argvdata/qemuxml2argv-disk-cdrom-tray.xml

+<domain type='qemu'>
+  <name>test</name>
+  <uuid>3fa02811-7832-34bd-004d-1ff56a9286ff</uuid>
+  <memory>1048576</memory>
+  <currentMemory>1048576</currentMemory>
+  <vcpu>1</vcpu>
+  <os>
+    <type arch='x86_64' machine='pc-0.13'>hvm</type>
+    <boot dev='cdrom'/>
+    <boot dev='hd'/>
+    <bootmenu enable='yes'/>
+  </os>
+  <clock offset='utc'/>
+  <on_poweroff>destroy</on_poweroff>
+  <on_reboot>restart</on_reboot>
+  <on_crash>restart</on_crash>
+  <devices>
+    <emulator>/usr/bin/qemu</emulator>
+    <disk type='file' device='disk'>
+      <driver name='qemu' type='qcow2'/>
+      <source file='/var/lib/libvirt/images/f14.img'/>
+      <target dev='vda' bus='virtio'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
+    </disk>
+      <disk type='file' device='cdrom'>
+      <driver name='qemu' type='raw'/>
+      <source file='/var/lib/libvirt/Fedora-14-x86_64-Live-KDE.iso'/>
+      <target dev='hdc' bus='ide' tray='closed'/>
+      <readonly/>
+      <address type='drive' controller='0' bus='1' target='0' unit='0'/>
+    </disk>
+    <disk type='file' device='cdrom'>
+      <driver name='qemu' type='raw'/>
+      <source file='/tmp/cdrom.img'/>
+      <target dev='hdd' bus='ide' tray='open'/>
+      <readonly/>
+      <address type='drive' controller='0' bus='1' target='0' unit='1'/>
+    </disk>
+    <controller type='usb' index='0'/>
+    <controller type='ide' index='0'/>
+    <memballoon model='virtio'/>
+  </devices>
+</domain>

tests/qemuxml2argvdata/qemuxml2argv-disk-floppy-tray-no-device-cap.args

+LC_ALL=C PATH=/bin HOME=/home/test USER=test LOGNAME=test /usr/bin/qemu -S -M \
+pc -m 214 -smp 1 -nographic -monitor unix:/tmp/test-monitor,server,nowait \
+-no-acpi -boot c -hda /dev/HostVG/QEMUGuest1 -fda /dev/fd0 \
+-net none -serial none -parallel none -usb

tests/qemuxml2argvdata/qemuxml2argv-disk-floppy-tray-no-device-cap.xml

+<domain type='qemu'>
+  <name>QEMUGuest1</name>
+  <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
+  <memory>219136</memory>
+  <currentMemory>219136</currentMemory>
+  <vcpu>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</emulator>
+    <disk type='block' device='disk'>
+      <source dev='/dev/HostVG/QEMUGuest1'/>
+      <target dev='hda' bus='ide'/>
+      <address type='drive' controller='0' bus='0' target='0' unit='0'/>
+    </disk>
+    <disk type='block' device='floppy'>
+      <source dev='/dev/fd0'/>
+      <target dev='fda' bus='fdc' tray='closed'/>
+      <address type='drive' controller='0' bus='0' target='0' unit='0'/>
+    </disk>
+    <disk type='file' device='floppy'>
+      <source file='/tmp/firmware.img'/>
+      <target dev='fdb' bus='fdc' tray='open'/>
+      <address type='drive' controller='0' bus='0' target='0' unit='1'/>
+    </disk>
+    <controller type='usb' index='0'/>
+    <controller type='fdc' index='0'/>
+    <controller type='ide' index='0'/>
+    <memballoon model='virtio'/>
+  </devices>
+</domain>

tests/qemuxml2argvdata/qemuxml2argv-disk-floppy-tray.args

+LC_ALL=C PATH=/bin HOME=/home/test USER=test LOGNAME=test \
+/usr/bin/qemu -S -M pc -m 214 -smp 1 -nographic -nodefaults \
+-monitor unix:/tmp/test-monitor,server,nowait -no-acpi -boot c \
+-drive file=/dev/HostVG/QEMUGuest1,if=none,id=drive-ide0-0-0 \
+-device ide-drive,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0 \
+-drive file=/dev/fd0,if=none,id=drive-fdc0-0-0 \
+-global isa-fdc.driveA=drive-fdc0-0-0 \
+-drive if=none,id=drive-fdc0-0-1 \
+-global isa-fdc.driveB=drive-fdc0-0-1 \
+-usb -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3

tests/qemuxml2argvdata/qemuxml2argv-disk-floppy-tray.xml

+<domain type='qemu'>
+  <name>QEMUGuest1</name>
+  <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
+  <memory>219136</memory>
+  <currentMemory>219136</currentMemory>
+  <vcpu>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</emulator>
+    <disk type='block' device='disk'>
+      <source dev='/dev/HostVG/QEMUGuest1'/>
+      <target dev='hda' bus='ide'/>
+      <address type='drive' controller='0' bus='0' target='0' unit='0'/>
+    </disk>
+    <disk type='block' device='floppy'>
+      <source dev='/dev/fd0'/>
+      <target dev='fda' bus='fdc' tray='closed'/>
+      <address type='drive' controller='0' bus='0' target='0' unit='0'/>
+    </disk>
+    <disk type='file' device='floppy'>
+      <source file='/tmp/firmware.img'/>
+      <target dev='fdb' bus='fdc' tray='open'/>
+      <address type='drive' controller='0' bus='0' target='0' unit='1'/>
+    </disk>
+    <controller type='usb' index='0'/>
+    <controller type='fdc' index='0'/>
+    <controller type='ide' index='0'/>
+    <memballoon model='virtio'/>
+  </devices>
+</domain>

tests/qemuxml2argvtest.c

@@ -392,7 +392,13 @@ mymain(void)
     DO_TEST("hugepages", false, QEMU_CAPS_MEM_PATH);
     DO_TEST("disk-cdrom", false, NONE);
     DO_TEST("disk-cdrom-empty", false, QEMU_CAPS_DRIVE);
+    DO_TEST("disk-cdrom-tray", false,
+            QEMU_CAPS_DRIVE, QEMU_CAPS_DEVICE, QEMU_CAPS_VIRTIO_TX_ALG);
+    DO_TEST("disk-cdrom-tray-no-device-cap", false, NONE);
     DO_TEST("disk-floppy", false, NONE);
+    DO_TEST("disk-floppy-tray-no-device-cap", false, NONE);
+    DO_TEST("disk-floppy-tray", false,
+            QEMU_CAPS_DRIVE, QEMU_CAPS_DEVICE);
     DO_TEST("disk-many", false, NONE);
     DO_TEST("disk-virtio", false, QEMU_CAPS_DRIVE, QEMU_CAPS_DRIVE_BOOT);
     DO_TEST("disk-order", false,