[libvirt] [PATCH v2 2/3] qemu: properly handle '=' in the VNC socket path

[Pavel Hrdina]

If a domain name contains a '=' and the unix socket path is
auto-generated or socket path provided by user contains '=' QEMU
is unable to properly parse the command line.  In order to make it
work we need to use the new command line syntax for VNC if it's
available, otherwise we can use the old syntax.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1352529

Signed-off-by: Pavel Hrdina <phrdina at redhat.com>
---

Notes:
    Changes in v2:
        - removed validation since it works with the old syntax

 src/qemu/qemu_command.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index 59ad93a4cb..e7a3c4289e 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -7784,7 +7784,10 @@ qemuBuildGraphicsVNCCommandLine(virQEMUDriverConfigPtr cfg,
 
     switch (glisten->type) {
     case VIR_DOMAIN_GRAPHICS_LISTEN_TYPE_SOCKET:
-        virBufferAddLit(&opt, "unix:");
+        if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_VNC_MULTI_SERVERS))
+            virBufferAddLit(&opt, "vnc=unix:");
+        else
+            virBufferAddLit(&opt, "unix:");
         virQEMUBuildBufferEscapeComma(&opt, glisten->socket);
         break;
 
-- 
2.13.3