scripts/runqemu: Add possibility to disable network

Default network configuration requires tun/tap module and while being
usable it conflicts with tap devices created by VPN clients sometimes
and requires root permissions to use . While it's possible to work
this around it's not always feasible if network is not required
Add nonetwork option which can be specified if the network connectivity is
not needed and SDL/serial is enough to communicate with the image.

(From OE-Core rev: d4073dedbb234ff3c6bbebafc836fedf90d96569)

Signed-off-by: Pavel Zhukov <pazhukov@suse.de>
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 6 insertions, 1 deletions

diff --git a/scripts/runqemu b/scripts/runqemu
index 4c06cefbff..56715c3e1e 100755
--- a/scripts/runqemu
+++ b/scripts/runqemu
@@ -66,6 +66,7 @@ of the following environment variables (in any order):
   MACHINE - the machine name (optional, autodetected from KERNEL filename if unspecified)
   Simplified QEMU command-line options can be passed with:
     nographic - disable video console
+    nonetwork - disable network connectivity
     novga - Disable VGA emulation completely
     sdl - choose the SDL UI frontend
     gtk - choose the Gtk UI frontend
@@ -178,6 +179,7 @@ class BaseConfig(object):
         self.serialconsole = False
         self.serialstdio = False
         self.nographic = False
+        self.nonetwork = False
         self.sdl = False
         self.gtk = False
         self.gl = False
@@ -495,6 +497,8 @@ to your build configuration.
                 self.check_arg_fstype(arg)
             elif arg == 'nographic':
                 self.nographic = True
+            elif arg == "nonetwork":
+                self.nonetwork = True
             elif arg == 'sdl':
                 self.sdl = True
             elif arg == 'gtk':
@@ -1224,7 +1228,8 @@ to your build configuration.
         self.set('NETWORK_CMD', '%s %s' % (self.network_device.replace('@MAC@', mac), qemu_tap_opt))
 
     def setup_network(self):
-        if self.get('QB_NET') == 'none':
+        if self.nonetwork or self.get('QB_NET') == 'none':
+            self.set('NETWORK_CMD', '-nic none')
             return
         if sys.stdin.isatty():
             self.saved_stty = subprocess.check_output(("stty", "-g")).decode('utf-8').strip()