new helper wait_for_vnc_port()

Makefile

@@ -1,7 +1,7 @@
 RELEASE=2.2
 
 VERSION=1.0
-PKGREL=35
+PKGREL=36
 
 PACKAGE=libpve-common-perl
 

data/PVE/Tools.pm

@@ -580,6 +580,30 @@ sub extract_param {
     return $res;
 }
 
+# Note: we use this to wait until vncterm is ready
+sub wait_for_vnc_port {
+    my ($port, $timeout) = @_;
+
+    $timeout = 5 if !$timeout;
+
+    for (my $i = 0; $i < $timeout; $i++) {
+	if (my $fh = IO::File->new ("/proc/net/tcp", "r")) {
+	    while (defined (my $line = <$fh>)) {
+		if ($line =~ m/^\s*\d+:\s+([0-9A-Fa-f]{8}):([0-9A-Fa-f]{4})\s/) {
+		    if ($port == hex($2)) {
+			close($fh);
+			return 1;
+		    }
+		}
+	    }
+	    close($fh);
+	}
+	sleep(1);
+    }
+
+    return undef;
+}
+
 sub next_vnc_port {
 
     for (my $p = 5900; $p < 6000; $p++) {

debian/changelog

@@ -1,3 +1,9 @@
+libpve-common-perl (1.0-36) unstable; urgency=low
+
+  * new helper wait_for_vnc_port()
+
+ -- Proxmox Support Team <support@proxmox.com>  Wed, 24 Oct 2012 08:21:04 +0200
+
 libpve-common-perl (1.0-35) unstable; urgency=low
 
   * fix bug in read_memory_usage