oe-selftest: devtool: split tap detection into function

Make the check for tap devices available as a function which can be used
by other tests as well.

(From OE-Core rev: ad8f3a8d959a245301118cf7b850f1a0ab567f01)

Signed-off-by: Adrian Freihofer <adrian.freihofer@siemens.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 16 insertions, 0 deletions

diff --git a/meta/lib/oeqa/utils/commands.py b/meta/lib/oeqa/utils/commands.py
index b60a6e6c38..e049e1ee68 100644
--- a/meta/lib/oeqa/utils/commands.py
+++ b/meta/lib/oeqa/utils/commands.py
@@ -401,6 +401,22 @@ def runqemu(pn, ssh=True, runqemuparams='', image_fstype=None, launch_cmd=None,
         targetlogger.removeHandler(handler)
         qemu.stop()
 
+def runqemu_check_taps():
+    """Check if tap devices for runqemu are available"""
+    if not os.path.exists('/etc/runqemu-nosudo'):
+        return False
+    result = runCmd('PATH="$PATH:/sbin:/usr/sbin" ip tuntap show', ignore_status=True)
+    if result.status != 0:
+        result = runCmd('PATH="$PATH:/sbin:/usr/sbin" ifconfig -a', ignore_status=True)
+        if result.status != 0:
+            return False
+    for line in result.output.splitlines():
+        if line.startswith('tap'):
+            break
+    else:
+        return False
+    return True
+
 def updateEnv(env_file):
     """
     Source a file and update environment.