qemu: introduce spiceport chardev backend

Add a new backend for any character device.  This backend uses channel
in spice connection.  This channel is similar to spicevmc, but
all-purpose in contrast to spicevmc.

Apart from spicevmc, spiceport-backed chardev will not be formatted
into the command-line if there is no spice to use (with test for that
as well).  For this I moved the def->graphics counting to the start
of the function so its results can be used in rest of the code even in
the future.

Signed-off-by: Martin Kletzander <mkletzan@redhat.com>

src/qemu/qemu_capabilities.c

@@ -1,7 +1,7 @@
 /*
  * qemu_capabilities.c: QEMU capabilities generation
  *
- * Copyright (C) 2006-2013 Red Hat, Inc.
+ * Copyright (C) 2006-2014 Red Hat, Inc.
  * Copyright (C) 2006 Daniel P. Berrange
  *
  * This library is free software; you can redistribute it and/or
@@ -247,7 +247,8 @@ VIR_ENUM_IMPL(virQEMUCaps, QEMU_CAPS_LAST,
               "boot-strict", /* 160 */
               "pvpanic",
               "enable-fips",
-              "spice-file-xfer-disable"
+              "spice-file-xfer-disable",
+              "spiceport",
     );
 
 struct _virQEMUCaps {
@@ -1012,6 +1013,8 @@ virQEMUCapsComputeCmdFlags(const char *help,
         virQEMUCapsSet(qemuCaps, QEMU_CAPS_CHARDEV);
         if (strstr(help, "-chardev spicevmc"))
             virQEMUCapsSet(qemuCaps, QEMU_CAPS_CHARDEV_SPICEVMC);
+        if (strstr(help, "-chardev spiceport"))
+            virQEMUCapsSet(qemuCaps, QEMU_CAPS_CHARDEV_SPICEPORT);
     }
     if (strstr(help, "-balloon"))
         virQEMUCapsSet(qemuCaps, QEMU_CAPS_BALLOON);
@@ -2567,6 +2570,12 @@ virQEMUCapsInitQMPMonitor(virQEMUCapsPtr qemuCaps,
     if (qemuCaps->version >= 1003001)
         virQEMUCapsSet(qemuCaps, QEMU_CAPS_VNC_WEBSOCKET);
 
+    /* -chardev spiceport is supported from 1.4.0, but usable through
+     * qapi only since 1.5.0, however, it still cannot be queried
+     * for as a capability */
+    if (qemuCaps->version >= 1005000)
+        virQEMUCapsSet(qemuCaps, QEMU_CAPS_CHARDEV_SPICEPORT);
+
     if (qemuCaps->version >= 1006000)
         virQEMUCapsSet(qemuCaps, QEMU_CAPS_DEVICE_VIDEO_PRIMARY);
 

src/qemu/qemu_capabilities.h

@@ -1,7 +1,7 @@
 /*
  * qemu_capabilities.h: QEMU capabilities generation
  *
- * Copyright (C) 2006-2013 Red Hat, Inc.
+ * Copyright (C) 2006-2014 Red Hat, Inc.
  * Copyright (C) 2006 Daniel P. Berrange
  *
  * This library is free software; you can redistribute it and/or
@@ -202,6 +202,7 @@ enum virQEMUCapsFlags {
     QEMU_CAPS_DEVICE_PANIC       = 161, /* -device pvpanic */
     QEMU_CAPS_ENABLE_FIPS        = 162, /* -enable-fips */
     QEMU_CAPS_SPICE_FILE_XFER_DISABLE = 163, /* -spice disable-agent-file-xfer */
+    QEMU_CAPS_CHARDEV_SPICEPORT  = 164, /* -chardev spiceport */
 
     QEMU_CAPS_LAST,                   /* this must always be the last item */
 };

src/qemu/qemu_command.c

@@ -5977,6 +5977,16 @@ qemuBuildChrChardevStr(virDomainChrSourceDefPtr dev, const char *alias,
                           virDomainChrSpicevmcTypeToString(dev->data.spicevmc));
         break;
 
+    case VIR_DOMAIN_CHR_TYPE_SPICEPORT:
+        if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_CHARDEV_SPICEPORT)) {
+            virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
+                           _("spiceport not supported in this QEMU binary"));
+            goto error;
+        }
+        virBufferAsprintf(&buf, "spiceport,id=char%s,name=%s", alias,
+                          dev->data.spiceport.channel);
+        break;
+
     default:
         virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
                        _("unsupported chardev '%s'"),
@@ -6072,6 +6082,9 @@ qemuBuildChrArgStr(virDomainChrSourceDefPtr dev, const char *prefix)
                           dev->data.nix.path,
                           dev->data.nix.listen ? ",server,nowait" : "");
         break;
+
+    case VIR_DOMAIN_CHR_TYPE_SPICEPORT:
+        break;
     }
 
     if (virBufferError(&buf)) {
@@ -7740,6 +7753,20 @@ qemuBuildCommandLine(virConnectPtr conn,
 
     emulator = def->emulator;
 
+    for (i = 0; i < def->ngraphics; ++i) {
+        switch (def->graphics[i]->type) {
+        case VIR_DOMAIN_GRAPHICS_TYPE_SDL:
+            ++sdl;
+            break;
+        case VIR_DOMAIN_GRAPHICS_TYPE_VNC:
+            ++vnc;
+            break;
+        case VIR_DOMAIN_GRAPHICS_TYPE_SPICE:
+            ++spice;
+            break;
+        }
+    }
+
     /*
      * do not use boot=on for drives when not using KVM since this
      * is not supported at all in upstream QEmu.
@@ -8811,6 +8838,9 @@ qemuBuildCommandLine(virConnectPtr conn,
         virDomainChrDefPtr serial = def->serials[i];
         char *devstr;
 
+        if (serial->source.type == VIR_DOMAIN_CHR_TYPE_SPICEPORT && !spice)
+            continue;
+
         /* Use -chardev with -device if they are available */
         if (virQEMUCapsSupportsChardev(def, qemuCaps, serial)) {
             virCommandAddArg(cmd, "-chardev");
@@ -9021,19 +9051,6 @@ qemuBuildCommandLine(virConnectPtr conn,
         }
     }
 
-    for (i = 0; i < def->ngraphics; ++i) {
-        switch (def->graphics[i]->type) {
-        case VIR_DOMAIN_GRAPHICS_TYPE_SDL:
-            ++sdl;
-            break;
-        case VIR_DOMAIN_GRAPHICS_TYPE_VNC:
-            ++vnc;
-            break;
-        case VIR_DOMAIN_GRAPHICS_TYPE_SPICE:
-            ++spice;
-            break;
-        }
-    }
     if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_0_10) && sdl + vnc + spice > 1) {
         virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
                        _("only 1 graphics device is supported"));

tests/qemucapabilitiesdata/caps_1.5.3-1.caps

@@ -134,4 +134,5 @@
     <flag name='boot-strict'/>
     <flag name='pvpanic'/>
     <flag name='reboot-timeout'/>
+    <flag name='spiceport'/>
   </qemuCaps>

tests/qemucapabilitiesdata/caps_1.6.0-1.caps

@@ -140,4 +140,5 @@
     <flag name='reboot-timeout'/>
     <flag name='enable-fips'/>
     <flag name='spice-file-xfer-disable'/>
+    <flag name='spiceport'/>
   </qemuCaps>

tests/qemucapabilitiesdata/caps_1.6.50-1.caps

@@ -138,4 +138,5 @@
     <flag name='pvpanic'/>
     <flag name='reboot-timeout'/>
     <flag name='spice-file-xfer-disable'/>
+    <flag name='spiceport'/>
   </qemuCaps>

tests/qemuxml2argvdata/qemuxml2argv-serial-spiceport-nospice.args

@@ -0,0 +1,6 @@
+LC_ALL=C PATH=/bin HOME=/home/test USER=test LOGNAME=test QEMU_AUDIO_DRV=none \
+/usr/bin/qemu \
+-name QEMUGuest1 -S -M pc -m 214 -smp 1 -nographic -monitor \
+unix:/tmp/test-monitor,server,nowait -no-acpi -boot c \
+-usb -hda /dev/HostVG/QEMUGuest1 -net none -serial \
+none -parallel none

tests/qemuxml2argvdata/qemuxml2argv-serial-spiceport-nospice.xml

@@ -0,0 +1,35 @@
+<domain type='qemu'>
+  <name>QEMUGuest1</name>
+  <uuid>c7a5fdbd-edaf-9455-926a-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</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>
+    <controller type='usb' index='0'/>
+    <controller type='ide' index='0'/>
+    <controller type='pci' index='0' model='pci-root'/>
+    <serial type='spiceport'>
+      <source channel='org.qemu.console.serial.0'/>
+      <target port='0'/>
+    </serial>
+    <console type='spiceport'>
+      <source channel='org.qemu.console.serial.0'/>
+      <target type='serial' port='0'/>
+    </console>
+    <memballoon model='virtio'/>
+  </devices>
+</domain>

tests/qemuxml2argvdata/qemuxml2argv-serial-spiceport.args

@@ -0,0 +1,13 @@
+LC_ALL=C PATH=/bin HOME=/home/test USER=test LOGNAME=test QEMU_AUDIO_DRV=spice \
+/usr/bin/qemu -S -M pc -m 214 -smp 1 -nodefconfig -nodefaults \
+-chardev socket,id=charmonitor,path=/tmp/test-monitor,server,nowait \
+-mon chardev=charmonitor,id=monitor,mode=readline \
+-no-acpi -boot c -usb \
+-hda /dev/HostVG/QEMUGuest1 \
+-chardev spiceport,id=charserial0,name=org.qemu.console.serial.0 \
+-device isa-serial,chardev=charserial0,id=serial0 \
+-device usb-tablet,id=input0 \
+-spice port=5903,tls-port=5904,addr=127.0.0.1,x509-dir=/etc/pki/libvirt-spice \
+-device \
+qxl-vga,id=video0,ram_size=67107840,vram_size=67107840,bus=pci.0,addr=0x2 \
+-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3

tests/qemuxml2argvdata/qemuxml2argv-serial-spiceport.xml

@@ -0,0 +1,43 @@
+<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' cpuset='1-4,8-20,525'>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>
+    <controller type='usb' index='0'/>
+    <controller type='ide' index='0'/>
+    <controller type='pci' index='0' model='pci-root'/>
+    <serial type='spiceport'>
+      <source channel='org.qemu.console.serial.0'/>
+      <target port='0'/>
+    </serial>
+    <console type='spiceport'>
+      <source channel='org.qemu.console.serial.0'/>
+      <target type='serial' port='0'/>
+    </console>
+    <input type='tablet' bus='usb'/>
+    <input type='mouse' bus='ps2'/>
+    <graphics type='spice' port='5903' tlsPort='5904' autoport='no' listen='127.0.0.1'>
+      <listen type='address' address='127.0.0.1'/>
+    </graphics>
+    <video>
+      <model type='qxl' ram='65535' vram='65535' heads='1'/>
+    </video>
+    <memballoon model='virtio'/>
+  </devices>
+</domain>

tests/qemuxml2argvtest.c

@@ -949,6 +949,13 @@ mymain(void)
     DO_TEST("serial-udp", NONE);
     DO_TEST("serial-tcp-telnet", NONE);
     DO_TEST("serial-many", NONE);
+    DO_TEST("serial-spiceport",
+            QEMU_CAPS_CHARDEV, QEMU_CAPS_DEVICE,
+            QEMU_CAPS_NODEFCONFIG, QEMU_CAPS_DEVICE_VIDEO_PRIMARY,
+            QEMU_CAPS_DEVICE_QXL, QEMU_CAPS_DEVICE_QXL_VGA,
+            QEMU_CAPS_SPICE, QEMU_CAPS_CHARDEV_SPICEPORT);
+    DO_TEST("serial-spiceport-nospice", QEMU_CAPS_NAME);
+
     DO_TEST("parallel-tcp", NONE);
     DO_TEST("console-compat", NONE);
     DO_TEST("console-compat-auto", NONE);

tests/qemuxml2xmltest.c

@@ -241,6 +241,8 @@ mymain(void)
     DO_TEST("serial-udp");
     DO_TEST("serial-tcp-telnet");
     DO_TEST("serial-many");
+    DO_TEST("serial-spiceport");
+    DO_TEST("serial-spiceport-nospice");
     DO_TEST("parallel-tcp");
     DO_TEST("console-compat");
     DO_TEST("console-virtio-many");