testimage: handle SIGTERM to conclude runqemu

In the current state if a SIGTERM is sent to
the testimage worker, the worker will exit but
runqemu and qemu won't exit and the processes
need to be killed manually to free the
bitbake lock.

This allows to catch the SIGTERM signal in
testimage, this way it is possible to stop
runqemu and qemu and allow to free the bitbake lock.

Also this allows to skip the rest of the tests
when running the tests in qemu or real hardware.

This also solves minimal breaks in the setup of the
runtime test when checking if qemu is alive.

[YOCTO #8239]

(From OE-Core rev: 2694d2f17d597b44fcc7aed5f6836081fa88a6b3)

Signed-off-by: Benjamin Esquivel <benjamin.esquivel@linux.intel.com>
Signed-off-by: Mariano Lopez <mariano.lopez@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2 files changed, 16 insertions, 2 deletions

diff --git a/meta/classes/testimage.bbclass b/meta/classes/testimage.bbclass
index 7c783ea065..19a37cb037 100644
--- a/meta/classes/testimage.bbclass
+++ b/meta/classes/testimage.bbclass
@@ -236,6 +236,7 @@ def testimage_main(d):
     import os
     import oeqa.runtime
     import time
+    import signal
     from oeqa.oetest import loadTests, runTests
     from oeqa.targetcontrol import get_target_controller
     from oeqa.utils.dump import get_host_dumper
@@ -273,12 +274,20 @@ def testimage_main(d):
             self.imagefeatures = d.getVar("IMAGE_FEATURES", True).split()
             self.distrofeatures = d.getVar("DISTRO_FEATURES", True).split()
             manifest = os.path.join(d.getVar("DEPLOY_DIR_IMAGE", True), d.getVar("IMAGE_LINK_NAME", True) + ".manifest")
+            self.sigterm = False
+            self.origsigtermhandler = signal.getsignal(signal.SIGTERM)
+            signal.signal(signal.SIGTERM, self.sigterm_exception)
             try:
                 with open(manifest) as f:
                     self.pkgmanifest = f.read()
             except IOError as e:
                 bb.fatal("No package manifest file found. Did you build the image?\n%s" % e)
 
+        def sigterm_exception(self, signum, stackframe):
+            bb.warn("TestImage received SIGTERM, shutting down...")
+            self.sigterm = True
+            self.target.stop()
+
     # test context
     tc = TestContext()
 
@@ -293,8 +302,8 @@ def testimage_main(d):
 
     target.deploy()
 
-    target.start()
     try:
+        target.start()
         if export:
             exportTests(d,tc)
         else:
@@ -311,6 +320,7 @@ def testimage_main(d):
             else:
                 raise bb.build.FuncFailed("%s - FAILED - check the task log and the ssh log" % pn )
     finally:
+        signal.signal(signal.SIGTERM, tc.origsigtermhandler)
         target.stop()
 
 testimage_main[vardepsexclude] =+ "BB_ORIGENV"
diff --git a/meta/lib/oeqa/oetest.py b/meta/lib/oeqa/oetest.py
index ff62c30268..0fe68d4d52 100644
--- a/meta/lib/oeqa/oetest.py
+++ b/meta/lib/oeqa/oetest.py
@@ -145,7 +145,11 @@ class oeRuntimeTest(oeTest):
         super(oeRuntimeTest, self).__init__(methodName)
 
     def setUp(self):
-        self.assertTrue(self.target.check(), msg = "Qemu not running?")
+        # Check if test needs to run
+        if self.tc.sigterm:
+            self.fail("Got SIGTERM")
+        elif (type(self.target).__name__ == "QemuTarget"):
+            self.assertTrue(self.target.check(), msg = "Qemu not running?")
 
     def tearDown(self):
         # If a test fails or there is an exception