[Patch] vnclisten for paravirt FB

["Daniel P. Berrange" <berrange@redhat.com>]

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This patch adds support for the 'vnclisten' parameter to the paravirt 
framebuffer. It has a dependancy on the paravirt framebuffer patches,
and the 3rd iteration of the HVM vnclisten patches. The patch was 
originally written by Jeremy Katz, adapted by myself to make it pull
default setting from /etc/xend-config.sxp if no per-guest setting for
vnclisten is present.

  Signed-off-by: Daniel P. Berrange <berrange@redhat.com>

Regards,
Dan.
-- 
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diff -ru xen-3.0.3-testing-11633.vnclisten/tools/python/xen/xend/image.py xen-3.0.3-testing-11633.vnclisten-pvfb/tools/python/xen/xend/image.py
--- xen-3.0.3-testing-11633.vnclisten/tools/python/xen/xend/image.py	2006-09-29 13:16:13.000000000 -0400
+++ xen-3.0.3-testing-11633.vnclisten-pvfb/tools/python/xen/xend/image.py	2006-09-29 16:42:11.000000000 -0400
@@ -225,6 +225,9 @@
             self.vncdisplay = sxp.child_value(imageConfig, 'vncdisplay',
                                               int(self.vm.getDomid()))
             self.vncunused = sxp.child_value(imageConfig, 'vncunused')
+            self.vnclisten = sxp.child_value(imageConfig, 'vnclisten')
+            if not(self.vnclisten):
+                self.vnclisten = xen.xend.XendRoot.instance().get_vnclisten_address()
         if self.vnc or self.sdl:
             log.info("setting use_graphics")
             self.vm.writeDom("console/use_graphics", "1")
@@ -244,6 +247,8 @@
                 args += ['--unused']
             elif self.vncdisplay:
                 args += [ "--vncport", "%d" %(5900 + self.vncdisplay,) ]
+            if self.vnclisten:
+                args += [ "--listen", self.vnclisten ]
         elif self.sdl:
             args = [xen.util.auxbin.pathTo("xen-sdlfb")]
         args = args + [ "--domid", "%d" % self.vm.getDomid(),
diff -ru xen-3.0.3-testing-11633.vnclisten/tools/xenfb/vncfb.c xen-3.0.3-testing-11633.vnclisten-pvfb/tools/xenfb/vncfb.c
--- xen-3.0.3-testing-11633.vnclisten/tools/xenfb/vncfb.c	2006-09-29 10:57:18.000000000 -0400
+++ xen-3.0.3-testing-11633.vnclisten-pvfb/tools/xenfb/vncfb.c	2006-09-29 16:41:29.000000000 -0400
@@ -89,16 +89,19 @@
     { "vncport", 1, NULL, 'p' },
     { "title", 1, NULL, 't' },
     { "unused", 0, NULL, 'u' },
+    { "listen", 1, NULL, 'l' },
 };
 
 int main(int argc, char **argv)
 {
 	rfbScreenInfoPtr server;
-	char *fake_argv[5] = { "vncfb", "-rfbport", "5901", 
-                               "-desktop", "xen-vncfb" };
+	char *fake_argv[7] = { "vncfb", "-rfbport", "5901", 
+                               "-desktop", "xen-vncfb", 
+                               "-listen", "0.0.0.0" };
 	int fake_argc = sizeof(fake_argv) / sizeof(fake_argv[0]);
 	int domid = -1, port = -1;
         char * title = NULL;
+        char * listen = NULL;
 	struct xenfb *xenfb;
 	fd_set readfds;
 	int fd;
@@ -121,6 +124,9 @@
                 case 'u':
                     unused = TRUE;
                     break;
+                case 'l':
+                    listen = strdup(optarg);
+                    break;
                 }
         }
         if (optind != argc) {
@@ -140,6 +146,9 @@
         if (title != NULL)
             fake_argv[4] = title;
 
+        if (listen != NULL)
+            fake_argv[6] = listen;
+
 	signal(SIGPIPE, SIG_IGN);
 
 	xenfb = xenfb_new();

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