oeqa: make it work for multiple users

There are failures when multiple users run oe-selftest on the same
host:

PermissionError: [Errno 13] Permission denied: '/tmp/oe-saved-
tests/201812250324_qemu'

This is because /tmp/oe-saved-tests was created by user A, while user B tries
to write data in it, then the error will happen. This patch can fix the
problem.

Move the dumped data to ${LOG_DIR}/runtime-hostdump/ rather than
/tmp/oe-saved-tests/ to fix the problem.

(From OE-Core rev: e219fe5329599cd6c3682f521eaee3852a2c8980)

Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/classes/testimage.bbclass

@@ -77,7 +77,7 @@ TESTIMAGEDEPENDS += "${@bb.utils.contains('IMAGE_PKGTYPE', 'deb', 'apt-native:do
 TESTIMAGELOCK = "${TMPDIR}/testimage.lock"
 TESTIMAGELOCK_qemuall = ""
 
-TESTIMAGE_DUMP_DIR ?= "/tmp/oe-saved-tests/"
+TESTIMAGE_DUMP_DIR ?= "${LOG_DIR}/runtime-hostdump/"
 
 TESTIMAGE_UPDATE_VARS ?= "DL_DIR WORKDIR DEPLOY_DIR"
 
@@ -249,6 +249,7 @@ def testimage_main(d):
                       'bootlog'     : bootlog,
                       'kvm'         : kvm,
                       'slirp'       : slirp,
+                      'dump_dir'    : d.getVar("TESTIMAGE_DUMP_DIR"),
                     }
 
     # TODO: Currently BBPATH is needed for custom loading of targets.

meta/lib/oeqa/runtime/context.py

@@ -49,7 +49,6 @@ class OERuntimeTestContextExecutor(OETestContextExecutor):
     default_manifest = 'data/manifest'
     default_server_ip = '192.168.7.1'
     default_target_ip = '192.168.7.2'
-    default_host_dumper_dir = '/tmp/oe-saved-tests'
     default_extract_dir = 'packages/extracted'
 
     def register_commands(self, logger, subparsers):
@@ -71,9 +70,7 @@ class OERuntimeTestContextExecutor(OETestContextExecutor):
                 % self.default_server_ip)
 
         runtime_group.add_argument('--host-dumper-dir', action='store',
-                default=self.default_host_dumper_dir,
-                help="Directory where host status is dumped, if tests fails, default: %s" \
-                % self.default_host_dumper_dir)
+                help="Directory where host status is dumped, if tests fails")
 
         runtime_group.add_argument('--packages-manifest', action='store',
                 default=self.default_manifest,

meta/lib/oeqa/targetcontrol.py

@@ -107,6 +107,8 @@ class QemuTarget(BaseTarget):
         dump_target_cmds = d.getVar("testimage_dump_target")
         dump_host_cmds = d.getVar("testimage_dump_host")
         dump_dir = d.getVar("TESTIMAGE_DUMP_DIR")
+        if not dump_dir:
+            dump_dir = os.path.join(d.getVar('LOG_DIR'), 'runtime-hostdump')
         use_kvm = oe.types.qemu_use_kvm(d.getVar('QEMU_USE_KVM'), d.getVar('TARGET_ARCH'))
 
         # Log QemuRunner log output to a file

meta/lib/oeqa/utils/dump.py

@@ -12,7 +12,7 @@ class BaseDumper(object):
         self.cmds = []
         # Some testing doesn't inherit testimage, so it is needed
         # to set some defaults.
-        self.parent_dir = parent_dir or "/tmp/oe-saved-tests"
+        self.parent_dir = parent_dir
         dft_cmds = """  top -bn1
                         iostat -x -z -N -d -p ALL 20 2
                         ps -ef