[OE-core] [PATCH 3/3] oeqa/selftest: Drop 'backup' code and SIGTERM handler

[Richard Purdie]

Now selftest is using its own copied build directory, we can stop worrying about
copying files around as backup, and drop the SIGTERM handler to try and restore
them, simplifying the code.

Signed-off-by: Richard Purdie <richard.purdie at linuxfoundation.org>
---
 meta/lib/oeqa/selftest/case.py    | 30 +-------------------
 meta/lib/oeqa/selftest/context.py | 47 ++-----------------------------
 2 files changed, 4 insertions(+), 73 deletions(-)

diff --git a/meta/lib/oeqa/selftest/case.py b/meta/lib/oeqa/selftest/case.py
index ac3308d8a44..dcad4f76ecd 100644
--- a/meta/lib/oeqa/selftest/case.py
+++ b/meta/lib/oeqa/selftest/case.py
@@ -6,7 +6,6 @@
 
 import sys
 import os
-import shutil
 import glob
 import errno
 from unittest.util import safe_repr
@@ -30,9 +29,7 @@ class OESelftestTestCase(OETestCase):
         cls.builddir = cls.tc.config_paths['builddir']
 
         cls.localconf_path = cls.tc.config_paths['localconf']
-        cls.localconf_backup = cls.tc.config_paths['localconf_class_backup']
         cls.local_bblayers_path = cls.tc.config_paths['bblayers']
-        cls.local_bblayers_backup = cls.tc.config_paths['bblayers_class_backup']
 
         cls.testinc_path = os.path.join(cls.tc.config_paths['builddir'],
                 "conf/selftest.inc")
@@ -43,8 +40,7 @@ class OESelftestTestCase(OETestCase):
 
         cls._track_for_cleanup = [
             cls.testinc_path, cls.testinc_bblayers_path,
-            cls.machineinc_path, cls.localconf_backup,
-            cls.local_bblayers_backup]
+            cls.machineinc_path]
 
         cls.add_include()
 
@@ -102,30 +98,6 @@ class OESelftestTestCase(OETestCase):
     def setUp(self):
         super(OESelftestTestCase, self).setUp()
         os.chdir(self.builddir)
-        # Check if local.conf or bblayers.conf files backup exists
-        # from a previous failed test and restore them
-        if os.path.isfile(self.localconf_backup) or os.path.isfile(
-                self.local_bblayers_backup):
-            self.logger.debug("\
-Found a local.conf and/or bblayers.conf backup from a previously aborted test.\
-Restoring these files now, but tests should be re-executed from a clean environment\
-to ensure accurate results.")
-            try:
-                shutil.copyfile(self.localconf_backup, self.localconf_path)
-            except OSError as e:
-                if e.errno != errno.ENOENT:
-                    raise
-            try:
-                shutil.copyfile(self.local_bblayers_backup,
-                                self.local_bblayers_path)
-            except OSError as e:
-                if e.errno != errno.ENOENT:
-                    raise
-        else:
-            # backup local.conf and bblayers.conf
-            shutil.copyfile(self.localconf_path, self.localconf_backup)
-            shutil.copyfile(self.local_bblayers_path, self.local_bblayers_backup)
-            self.logger.debug("Creating local.conf and bblayers.conf backups.")
         # we don't know what the previous test left around in config or inc files
         # if it failed so we need a fresh start
         try:
diff --git a/meta/lib/oeqa/selftest/context.py b/meta/lib/oeqa/selftest/context.py
index 2cb6c763852..0ab6462bbf8 100644
--- a/meta/lib/oeqa/selftest/context.py
+++ b/meta/lib/oeqa/selftest/context.py
@@ -9,9 +9,7 @@ import time
 import glob
 import sys
 import importlib
-import signal
 import subprocess
-from shutil import copyfile
 from random import choice
 
 import oeqa
@@ -185,26 +183,10 @@ class OESelftestTestContextExecutor(OETestContextExecutor):
 
         builddir = os.environ.get("BUILDDIR")
         self.tc_kwargs['init']['config_paths'] = {}
-        self.tc_kwargs['init']['config_paths']['testlayer_path'] = \
-                get_test_layer()
+        self.tc_kwargs['init']['config_paths']['testlayer_path'] = get_test_layer()
         self.tc_kwargs['init']['config_paths']['builddir'] = builddir
-        self.tc_kwargs['init']['config_paths']['localconf'] = \
-                os.path.join(builddir, "conf/local.conf")
-        self.tc_kwargs['init']['config_paths']['localconf_backup'] = \
-                os.path.join(builddir, "conf/local.conf.orig")
-        self.tc_kwargs['init']['config_paths']['localconf_class_backup'] = \
-                os.path.join(builddir, "conf/local.conf.bk")
-        self.tc_kwargs['init']['config_paths']['bblayers'] = \
-                os.path.join(builddir, "conf/bblayers.conf")
-        self.tc_kwargs['init']['config_paths']['bblayers_backup'] = \
-                os.path.join(builddir, "conf/bblayers.conf.orig")
-        self.tc_kwargs['init']['config_paths']['bblayers_class_backup'] = \
-                os.path.join(builddir, "conf/bblayers.conf.bk")
-
-        copyfile(self.tc_kwargs['init']['config_paths']['localconf'],
-                self.tc_kwargs['init']['config_paths']['localconf_backup'])
-        copyfile(self.tc_kwargs['init']['config_paths']['bblayers'], 
-                self.tc_kwargs['init']['config_paths']['bblayers_backup'])
+        self.tc_kwargs['init']['config_paths']['localconf'] = os.path.join(builddir, "conf/local.conf")
+        self.tc_kwargs['init']['config_paths']['bblayers'] = os.path.join(builddir, "conf/bblayers.conf")
 
         def tag_filter(tags):
             if args.exclude_tags:
@@ -329,18 +311,9 @@ class OESelftestTestContextExecutor(OETestContextExecutor):
 
         return rc
 
-    def _signal_clean_handler(self, signum, frame):
-        if self.ourpid == os.getpid():
-            sys.exit(1)
-    
     def run(self, logger, args):
         self._process_args(logger, args)
 
-        # Setup a SIGTERM handler to allow restoration of files like local.conf and bblayers.conf
-        # but don't interfer with other processes
-        self.ourpid = os.getpid()
-        signal.signal(signal.SIGTERM, self._signal_clean_handler)
-
         rc = None
         try:
             if args.machine:
@@ -369,20 +342,6 @@ class OESelftestTestContextExecutor(OETestContextExecutor):
                 rc = self._internal_run(logger, args)
         finally:
             config_paths = self.tc_kwargs['init']['config_paths']
-            if os.path.exists(config_paths['localconf_backup']):
-                copyfile(config_paths['localconf_backup'],
-                        config_paths['localconf'])
-                os.remove(config_paths['localconf_backup'])
-
-            if os.path.exists(config_paths['bblayers_backup']):
-                copyfile(config_paths['bblayers_backup'], 
-                        config_paths['bblayers'])
-                os.remove(config_paths['bblayers_backup'])
-
-            if os.path.exists(config_paths['localconf_class_backup']):
-                os.remove(config_paths['localconf_class_backup'])
-            if os.path.exists(config_paths['bblayers_class_backup']):
-                os.remove(config_paths['bblayers_class_backup'])
 
             output_link = os.path.join(os.path.dirname(args.output_log),
                     "%s-results.log" % self.name)
-- 
2.25.0