script=no for the TUN/TAP net option, by Jean-Christian de Rivaz

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2376 c046a42c-6fe2-441c-8c8c-71466251a162

qemu-doc.texi

@@ -358,7 +358,8 @@ hostname reported by the builtin DHCP server.
 @item -net tap[,vlan=n][,fd=h][,ifname=name][,script=file]
 Connect the host TAP network interface @var{name} to VLAN @var{n} and
 use the network script @var{file} to configure it. The default
-network script is @file{/etc/qemu-ifup}. If @var{name} is not
+network script is @file{/etc/qemu-ifup}. Use @option{script=no} to
+disable script execution. If @var{name} is not
 provided, the OS automatically provides one.  @option{fd=h} can be
 used to specify the handle of an already opened host TAP interface. Example:
 

vl.c

@@ -3289,7 +3289,7 @@ static int net_tap_init(VLANState *vlan, const char *ifname1,
     if (fd < 0)
         return -1;
 
-    if (!setup_script)
+    if (!setup_script || !strcmp(setup_script, "no"))
         setup_script = "";
     if (setup_script[0] != '\0') {
         /* try to launch network init script */
@@ -6066,6 +6066,7 @@ void help(void)
            "-net tap[,vlan=n][,fd=h][,ifname=name][,script=file]\n"
            "                connect the host TAP network interface to VLAN 'n' and use\n"
            "                the network script 'file' (default=%s);\n"
+           "                use 'script=no' to disable script execution;\n"
            "                use 'fd=h' to connect to an already opened TAP interface\n"
 #endif
            "-net socket[,vlan=n][,fd=h][,listen=[host]:port][,connect=host:port]\n"